US20130255861A1 - Apparatuses and Methods for Making Absorbent Articles - Google Patents
Apparatuses and Methods for Making Absorbent Articles Download PDFInfo
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- US20130255861A1 US20130255861A1 US13/434,984 US201213434984A US2013255861A1 US 20130255861 A1 US20130255861 A1 US 20130255861A1 US 201213434984 A US201213434984 A US 201213434984A US 2013255861 A1 US2013255861 A1 US 2013255861A1
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- Prior art keywords
- substrate layer
- continuous
- elastic
- chassis
- bonded regions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15585—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers
- A61F13/15593—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers having elastic ribbons fixed thereto; Devices for applying the ribbons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
- A61F13/15723—Partitioning batts; Cutting
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
- A61F13/15739—Sealing, e.g. involving cutting
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
- A61F13/15747—Folding; Pleating; Coiling; Stacking; Packaging
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15804—Plant, e.g. involving several steps
Definitions
- the present disclosure relates to methods for manufacturing absorbent articles, and more particularly, to apparatuses and methods for making elastic belts for diapers.
- various types of articles such as for example, diapers and other absorbent articles, may be assembled by adding components to and/or otherwise modifying an advancing, continuous web of material.
- advancing webs of material are combined with other advancing webs of material.
- individual components created from advancing webs of material are combined with advancing webs of material, which in turn, are then combined with other advancing webs of material.
- individual components created from advancing web or webs are combined with other individual components created from other advancing web or webs.
- Webs of material and component parts used to manufacture diapers may include: backsheets, topsheets, leg cuffs, waist bands, absorbent core components, front and/or back ears, fastening components, and various types of elastic webs and components such as leg elastics, barrier leg cuff elastics, stretch side panels, and waist elastics.
- Some diaper pant embodiments are configured with a chassis connected with front and back elastic belts, wherein opposing end regions of the front and back belts are connected with each other at side seams.
- the elasticity of the front and back belts is removed in regions where the chassis connects with the belts.
- stretched elastic strands are glued between two continuous nonwoven webs to form an elastic laminate. Regions of the elastic strands may then be intermittently deactivated along the length of the elastic laminate by cutting the elastic strands. Subsequent to deactivating the elastic strands, the elastic laminate may be subjected to additional handling and converting operations.
- the present disclosure relates to methods and apparatuses for assembling absorbent articles, and more particularly, diapers, each including a chassis connected with front and back elastic belts. Opposing end regions of the chassis are connected with regions of the elastic belts where the elasticity of the elastic belts has been removed or deactivated.
- an elastic laminate is formed by intermittently bonding elastic strands between a first continuous substrate layer and a second continuous substrate layer. The elastic strands are then intermittently deactivated by severing the strands in the non-bonded regions to form deactivated regions of the elastic laminate.
- a plurality of chassis may then be bonded with the elastic laminate, wherein the first or second end regions of each chassis may be bonded with deactivated regions of the continuous elastic laminate.
- a method may be configured for assembling disposable pant diapers, each pant diaper comprising a chassis having a first end region and an opposing second end region separated from each other by a central region, and having a longitudinal axis and a lateral axis, the chassis comprising: a topsheet, a backsheet, and an absorbent core disposed between the topsheet and the backsheet.
- the method includes the steps of: advancing a first continuous substrate layer having a first surface and an opposing second surface in a machine direction, and defining a width in a cross direction; advancing a second continuous substrate layer having a first surface and an opposing second surface in a machine direction, and defining a width in a cross direction; advancing elastic strands in the machine direction in a stretched state; intermittently bonding the elastic strands in the stretched state between the first surface of the first substrate layer and the first surface of the second substrate layer to form an elastic laminate, the elastic laminate including bonded regions and non-bonded regions intermittently spaced along the machine direction, wherein the elastic strands are bonded to the first surface of the first substrate layer and the first surface of the second substrate layer in the bonded regions, and wherein the elastic strands are not bonded to the first surface of the first substrate layer and the first surface of the second substrate layer in the non-bonded regions; cutting the elastic laminate along the machine direction to form a first continuous elastic laminate and a second continuous elastic laminate, each of the first
- a method may be configured for assembling disposable pant diapers, each pant diaper comprising a chassis having a first end region and an opposing second end region separated from each other by a central region, and having a longitudinal axis and a lateral axis, the chassis comprising: a topsheet, a backsheet, and an absorbent core disposed between the topsheet and the backsheet.
- the method includes the steps of: advancing a first continuous substrate layer having a first surface and an opposing second surface in a machine direction, and defining a width in a cross direction; advancing a second continuous substrate layer having a first surface and an opposing second surface in a machine direction, and defining a width in a cross direction; advancing elastic strands in the machine direction in a stretched state; intermittently bonding the elastic strands in the stretched state between the first surface of the first substrate layer and the first surface of the second substrate layer to form a continuous elastic laminate, the continuous elastic laminate including bonded regions and non-bonded regions intermittently spaced along the machine direction, wherein the elastic strands are bonded to the first surface of the first substrate layer and the first surface of the second substrate layer in the bonded regions, and wherein the elastic strands are not bonded to the first surface of the first substrate layer and the first surface of the second substrate layer in the non-bonded regions; severing elastic strands in the non-bonded regions of the continuous elastic laminate by applying pressure to the first
- FIG. 1 is a perspective view of a diaper pant.
- FIG. 2A is a partially cut away plan view of the diaper pant shown in FIG. 1 .
- FIG. 2B is a partially cut away plan view of a second embodiment of a diaper pant.
- FIG. 3A is a cross-sectional view of the diaper pants of FIGS. 2A and 2B taken along line 3 A- 3 A.
- FIG. 3B is a cross-sectional view of the diaper pants of FIGS. 2A and 2B taken along line 3 B- 3 B.
- FIG. 4 is a schematic side view of a converting apparatus adapted to manufacture diapers.
- FIG. 4A shows a first alternative converting embodiment for forming an elastic laminate.
- FIG. 4 A 1 is a view of a continuous length of an elastic laminate from FIG. 4A taken along line 4 A 1 - 4 A 1 .
- FIG. 4B shows a second alternative converting embodiment for forming an elastic laminate.
- FIG. 4 B 1 is a view of a continuous length of an elastic laminate from FIG. 4B taken along line 4 B 1 - 4 B 1 .
- FIG. 4 B 2 is a view of a continuous length of an elastic laminate from FIG. 4B taken along line 4 B 2 - 4 B 2 .
- FIG. 5A is a view of a continuous length of an elastic laminate from FIG. 4 taken along line 5 A- 5 A.
- FIG. 5B is a view of the elastic laminate from FIG. 4 after being slit into first and second belt substrates separated from each other in the cross direction CD taken along line 5 B- 5 B.
- FIG. 5 B 1 is a cross-sectional view of the first belt substrate from FIG. 5B taken along line B 1 -B 1 .
- FIG. 5 B 2 is a cross-sectional view of the second belt substrate from FIG. 5B taken along line B 2 -B 2 .
- FIG. 5 B 3 shows a detailed view of a belt substrate with the outer layer belt material cut-away to illustrate an embodiment of adhesive application.
- FIG. 5C is a view of continuous lengths of advancing first and second belt substrates material from FIG. 4 taken along line 5 C- 5 C.
- FIG. 5 C 1 is a cross-sectional view of the first belt substrate from FIG. 5C taken along line C 1 -C 1 showing elastics cut in non-bonded regions.
- FIG. 5 C 2 is a cross-sectional view of the second belt substrate from FIG. 5C taken along line C 2 -C 2 showing elastics cut in non-bonded regions.
- FIG. 5 C 3 shows a detailed view of the belt substrate from FIG. 5C with the outer layer belt material cut-away to illustrate elastics after having been cut in the non-bonded regions.
- FIG. 5 C 1 A is a cross-sectional view of the first belt substrate from FIG. 5C taken along line C 1 -C 1 showing elastics and inner belt material cut in non-bonded regions.
- FIG. 5 C 2 A is a cross-sectional view of the second belt substrate from FIG. 5C taken along line C 2 -C 2 showing elastics and inner belt material cut in non-bonded regions.
- FIG. 5 C 1 B is a cross-sectional view of the first belt substrate from FIG. 5C taken along line C 1 -C 1 showing elastics, inner belt material, and outer belt material cut in non-bonded regions.
- FIG. 5 C 2 B is a cross-sectional view of the second belt substrate from FIG. 5C taken along line C 2 -C 2 showing elastics, inner belt material, and outer belt material cut in non-bonded regions.
- FIG. 5 C 1 C is a cross-sectional view of the first belt substrate from FIG. 5C taken along line C 1 -C 1 with the inner belt material and outer belt material bonded together by the cutting device.
- FIG. 5 C 2 C is a cross-sectional view of the second belt substrate from FIG. 5C taken along line C 2 -C 2 with the inner belt material and outer belt material bonded together by the cutting device.
- FIG. 5D is a view of a continuous length of chassis assemblies from FIG. 4 taken along line 5 D- 5 D.
- FIG. 5 E 1 is a view of a discrete chassis from FIG. 4 taken along line 5 E 1 - 5 E 1 .
- FIG. 5 E 2 is a view of a discrete chassis from FIG. 4 taken along line 5 E 2 - 5 E 2 .
- FIG. 5F is a view of multiple discrete chassis spaced from each other along the machine direction MD and connected with each other by the front and back side panel material from FIG. 4 taken along line 5 F- 5 F.
- FIG. 5G is a view of folded multiple discrete chassis with the front and back side panel material in a facing relationship from FIG. 4 taken along line 5 G- 5 G.
- FIG. 5H is a view of two discrete absorbent articles advancing the machine direction MD from FIG. 4 taken along line 5 H- 5 H.
- FIG. 6 is a perspective view of an embodiment of a cutting apparatus.
- FIG. 7 is a front side view of the cutting apparatus of FIG. 6 as two blades are rotated toward two substrates partially wrapped around an anvil roll.
- FIG. 8A is a left side view of the cutting apparatus of FIG. 7 showing the blade initiating contact with the substrate partially wrapped around the anvil roll.
- FIG. 8B shows the cutting apparatus of FIG. 8A as the blade flexes while being rotated into contact with the substrate partially wrapped around the anvil roll.
- FIG. 8C shows the cutting apparatus of FIG. 8B after the blade is rotated away from the substrate partially wrapped around the anvil roll.
- “Absorbent article” is used herein to refer to consumer products whose primary function is to absorb and retain soils and wastes.
- “Diaper” is used herein to refer to an absorbent article generally worn by infants and incontinent persons about the lower torso.
- the term “disposable” is used herein to describe absorbent articles which generally are not intended to be laundered or otherwise restored or reused as an absorbent article (e.g., they are intended to be discarded after a single use and may also be configured to be recycled, composted or otherwise disposed of in an environmentally compatible manner).
- an “elastic,” “elastomer” or “elastomeric” refers to materials exhibiting elastic properties, which include any material that upon application of a force to its relaxed, initial length can stretch or elongate to an elongated length more than 10% greater than its initial length and will substantially recover back to about its initial length upon release of the applied force.
- joind encompasses configurations whereby an element is directly secured to another element by affixing the element directly to the other element, and configurations whereby an element is indirectly secured to another element by affixing the element to intermediate member(s) which in turn are affixed to the other element.
- Longitudinal means a direction running substantially perpendicular from a waist edge to a longitudinally opposing waist edge of an absorbent article when the article is in a flat out, uncontracted state, or from a waist edge to the bottom of the crotch, i.e. the fold line, in a bi-folded article. Directions within 45 degrees of the longitudinal direction are considered to be “longitudinal.” “Lateral” refers to a direction running from a longitudinally extending side edge to a laterally opposing longitudinally extending side edge of an article and generally at a right angle to the longitudinal direction. Directions within 45 degrees of the lateral direction are considered to be “lateral.”
- substrate is used herein to describe a material which is primarily two-dimensional (i.e. in an XY plane) and whose thickness (in a Z direction) is relatively small (i.e. 1/10 or less) in comparison to its length (in an X direction) and width (in a Y direction).
- substrates include a web, layer or layers or fibrous materials, nonwovens, films and foils such as polymeric films or metallic foils. These materials may be used alone or may comprise two or more layers laminated together. As such, a web is a substrate.
- nonwoven refers herein to a material made from continuous (long) filaments (fibers) and/or discontinuous (short) filaments (fibers) by processes such as spunbonding, meltblowing, carding, and the like. Nonwovens do not have a defined woven or knitted filament pattern.
- machine direction is used herein to refer to the direction of material flow through a process.
- relative placement and movement of material can be described as flowing in the machine direction through a process from upstream in the process to downstream in the process.
- cross direction is used herein to refer to a direction that is generally perpendicular to the machine direction.
- pant refers herein to disposable absorbent articles having a continuous perimeter waist opening and continuous perimeter leg openings designed for infant or adult wearers.
- a pant can be configured with a continuous or closed waist opening and at least one continuous, closed, leg opening prior to the article being applied to the wearer.
- a pant can be preformed by various techniques including, but not limited to, joining together portions of the article using any refastenable and/or permanent closure member (e.g., seams, heat bonds, pressure welds, adhesives, cohesive bonds, mechanical fasteners, etc.).
- a pant can be preformed anywhere along the circumference of the article in the waist region (e.g., side fastened or seamed, front waist fastened or seamed, rear waist fastened or seamed.
- Pre-fastened refers herein to pant diapers manufactured and provided to consumers in a configuration wherein the front waist region and the back waist region are fastened or connected to each other as packaged, prior to being applied to the wearer.
- pant diapers may have a continuous perimeter waist opening and continuous perimeter leg openings designed for infant or adult wearers.
- a diaper pant can be preformed by various techniques including, but not limited to, joining together portions of the diaper using refastenable and/or permanent closure members (e.g., seams, heat bonds, pressure welds, adhesives, cohesive bonds, mechanical fasteners, etc.).
- pant diapers can be preformed anywhere along the circumference of the waist region (e.g., side fastened or connected, front waist fastened or connected, rear waist fastened or connected).
- the present disclosure relates to methods and apparatuses for assembling absorbent articles, and more particularly, diapers, each including a chassis connected with front and back elastic belts.
- the chassis may include a topsheet, a backsheet, and an absorbent core disposed between the topsheet and the backsheet.
- the chassis may also have a first end region and an opposing second end region separated from each other by a central region. As discussed in more detail below, opposing end regions of the chassis are connected with regions of the elastic belts where the elasticity of the elastic belts has been removed or deactivated.
- An elastic laminate may be formed by intermittently bonding elastic strands between a first continuous substrate layer and a second continuous substrate layer.
- the elastic laminate includes bonded regions and non-bonded regions intermittently spaced along the machine direction, wherein the elastic strands are bonded to either the first substrate layer or the second substrate layer in the bonded regions, and wherein the elastic strands are not bonded to either the first substrate layer or the second substrate layer in the non-bonded regions.
- the elastic laminate is then cut along the machine direction to form a first continuous elastic laminate and a second continuous elastic laminate, each of the first continuous elastic laminate and the second continuous elastic laminate including bonded regions and non-bonded regions.
- the first continuous elastic laminate and the second elastic laminate are then separated from each other in the cross direction.
- the elastic strands are then intermittently deactivated by severing the strands in the non-bonded regions to form deactivated regions of the first continuous elastic laminate and the second continuous elastic laminate.
- the first continuous elastic laminate and the second continuous elastic laminate each have elastic regions corresponding with the bonded regions, and deactivated regions corresponding with the non-bonded regions where the elastics have been severed.
- a plurality of chassis may then be bonded between first and second elastic laminates, wherein first and second end regions of each chassis is bonded with deactivated regions of first and second continuous elastic laminates.
- the elastic laminate can be formed in various ways.
- the first continuous substrate layer may be formed from a first continuous substrate
- the second continuous substrate layer may be formed from a second continuous substrate.
- the first continuous substrate layer and/or the second continuous substrate layer may be formed by folding a portion of a single continuous substrate onto another portion of the single continuous substrate.
- the processes and apparatuses discussed herein may be used to assemble elastic laminates in various types of substrate configurations, some of which may be used in the manufacture of different types of absorbent articles.
- the following provides a general description of absorbent articles in the form of diapers that include elastic laminates that may be assembled in accordance with the methods and apparatuses disclosed herein.
- the methods and apparatuses herein are discussed below in the context of manufacturing absorbent articles, it is to be appreciated that the assembly methods and apparatuses herein may be configured to manufacture various types of substrates having intermittently spaced elastic and inelastic regions.
- FIGS. 1 and 2A show an example of a diaper pant 100 that may be assembled and folded in accordance with the apparatuses and methods disclosed herein.
- FIG. 1 shows a perspective view of a diaper pant 100 in a pre-fastened configuration
- FIG. 2A shows a plan view of the diaper pant 100 with the portion of the diaper that faces away from a wearer oriented towards the viewer.
- the diaper pant 100 shown in FIGS. 1 and 2A includes a chassis 102 and a ring-like elastic belt 104 .
- a first elastic belt 106 and a second elastic belt 108 are connected together to form the ring-like elastic belt 104 .
- the chassis 102 includes a first waist region 116 , a second waist region 118 , and a crotch region 119 disposed intermediate the first and second waist regions.
- the first waist region 116 may be configured as a front waist region
- the second waist region 118 may be configured as back waist region.
- the length of each of the front waist region, back waist region, and crotch region may be 1 ⁇ 3 of the length of the absorbent article 100 .
- the diaper 100 may also include a laterally extending front waist edge 120 in the front waist region 116 and a longitudinally opposing and laterally extending back waist edge 122 in the back waist region 118 .
- the diaper 100 and chassis 102 of FIG. 2A is shown with a longitudinal axis 124 and a lateral axis 126 .
- the longitudinal axis 124 may extend through the front waist edge 120 and through the back waist edge 122 .
- the lateral axis 126 may extend through a first longitudinal or right side edge 128 and through a midpoint of a second longitudinal or left side edge 130 of the chassis 102 .
- the diaper pant 100 may include an inner, body facing surface 132 , and an outer, garment facing surface 134 .
- the chassis 102 may include a backsheet 136 and a topsheet 138 .
- the chassis 102 may also include an absorbent assembly 140 including an absorbent core 142 that may be disposed between a portion of the topsheet 138 and the backsheet 136 .
- the diaper 100 may also include other features, such as leg elastics and/or leg cuffs to enhance the fit around the legs of the wearer.
- the periphery of the chassis 102 may be defined by the first longitudinal side edge 128 , a second longitudinal side edge 130 ; a first laterally extending end edge 144 disposed in the first waist region 116 ; and a second laterally extending end edge 146 disposed in the second waist region 118 .
- Both side edges 128 and 130 extend longitudinally between the first end edge 144 and the second end edge 146 .
- the laterally extending end edges 144 and 146 are located longitudinally inward from the laterally extending front waist edge 120 in the front waist region 116 and the laterally extending back waist edge 122 in the back waist region 118 .
- the front waist edge 120 and the back waist edge 122 of the chassis 102 may encircle a portion of the waist of the wearer.
- the chassis side edges 128 and 130 may encircle at least a portion of the legs of the wearer.
- the crotch region 119 may be generally positioned between the legs of the wearer with the absorbent core 142 extending from the front waist region 116 through the crotch region 119 to the back waist region 118 .
- a portion or the whole of the diaper 100 may also be made laterally extensible.
- the additional extensibility may help allow the diaper 100 to conform to the body of a wearer during movement by the wearer.
- the additional extensibility may also help, for example, allow the user of the diaper 100 including a chassis 102 having a particular size before extension to extend the front waist region 116 , the back waist region 118 , or both waist regions of the diaper 100 and/or chassis 102 to provide additional body coverage for wearers of differing size, i.e., to tailor the diaper to an individual wearer.
- Such extension of the waist region or regions may give the absorbent article a generally hourglass shape, so long as the crotch region is extended to a relatively lesser degree than the waist region or regions, and may impart a tailored appearance to the article when it is worn.
- the diaper pant 100 may include a backsheet 136 .
- the backsheet 136 may also define the outer surface 134 of the chassis 102 .
- the backsheet 136 may be impervious to fluids (e.g., menses, urine, and/or runny feces) and may be manufactured from a thin plastic film, although other flexible liquid impervious materials may also be used.
- the backsheet 136 may prevent the exudates absorbed and contained in the absorbent core from wetting articles which contact the diaper 100 , such as bedsheets, pajamas and undergarments.
- the backsheet 136 may also comprise a woven or nonwoven material, polymeric films such as thermoplastic films of polyethylene or polypropylene, and/or a multi-layer or composite materials comprising a film and a nonwoven material (e.g., having an inner film layer and an outer nonwoven layer).
- the backsheet may also comprise an elastomeric film.
- An example backsheet 136 may be a polyethylene film having a thickness of from about 0.012 mm (0.5 mils) to about 0.051 mm (2.0 mils).
- Exemplary polyethylene films are manufactured by Clopay Corporation of Cincinnati, Ohio, under the designation BR-120 and BR-121 and by Tredegar Film Products of Terre Haute, Ind., under the designation XP-39385.
- the backsheet 136 may also be embossed and/or matte-finished to provide a more clothlike appearance. Further, the backsheet 136 may permit vapors to escape from the absorbent core (i.e., the backsheet is breathable) while still preventing exudates from passing through the backsheet 136 .
- the size of the backsheet 136 may be dictated by the size of the absorbent core 142 and/or particular configuration or size of the diaper 100 .
- the diaper pant 100 may include a topsheet 138 .
- the topsheet 138 may also define all or part of the inner surface 132 of the chassis 102 .
- the topsheet 138 may be compliant, soft feeling, and non-irritating to the wearer's skin. It may be elastically stretchable in one or two directions. Further, the topsheet 138 may be liquid pervious, permitting liquids (e.g., menses, urine, and/or runny feces) to penetrate through its thickness.
- a topsheet 138 may be manufactured from a wide range of materials such as woven and nonwoven materials; apertured or hydroformed thermoplastic films; apertured nonwovens, porous foams; reticulated foams; reticulated thermoplastic films; and thermoplastic scrims.
- Woven and nonwoven materials may comprise natural fibers such as wood or cotton fibers; synthetic fibers such as polyester, polypropylene, or polyethylene fibers; or combinations thereof. If the topsheet 138 includes fibers, the fibers may be spunbond, carded, wet-laid, meltblown, hydroentangled, or otherwise processed as is known in the art.
- Topsheets 138 may be selected from high loft nonwoven topsheets, apertured film topsheets and apertured nonwoven topsheets.
- Apertured film topsheets may be pervious to bodily exudates, yet substantially non-absorbent, and have a reduced tendency to allow fluids to pass back through and rewet the wearer's skin.
- Exemplary apertured films may include those described in U.S. Pat. Nos. 5,628,097; 5,916,661; 6,545,197; and 6,107,539.
- the diaper pant 100 may also include an absorbent assembly 140 that is joined to the chassis 102 .
- the absorbent assembly 140 may have a laterally extending front edge 148 in the front waist region 116 and may have a longitudinally opposing and laterally extending back edge 150 in the back waist region 118 .
- the absorbent assembly may have a longitudinally extending right side edge 152 and may have a laterally opposing and longitudinally extending left side edge 154 , both absorbent assembly side edges 152 and 154 may extend longitudinally between the front edge 148 and the back edge 150 .
- the absorbent assembly 140 may additionally include one or more absorbent cores 142 or absorbent core layers.
- the absorbent core 142 may be at least partially disposed between the topsheet 138 and the backsheet 136 and may be formed in various sizes and shapes that are compatible with the diaper. Exemplary absorbent structures for use as the absorbent core of the present disclosure are described in U.S. Pat. Nos. 4,610,678; 4,673,402; 4,888,231; and 4,834,735.
- Some absorbent core embodiments may comprise fluid storage cores that contain reduced amounts of cellulosic airfelt material. For instance, such cores may comprise less than about 40%, 30%, 20%, 10%, 5%, or even 1% of cellulosic airfelt material.
- Such a core may comprises primarily absorbent gelling material in amounts of at least about 60%, 70%, 80%, 85%, 90%, 95%, or even about 100%, where the remainder of the core comprises a microfiber glue (if applicable).
- Such cores, microfiber glues, and absorbent gelling materials are described in U.S. Pat. Nos. 5,599,335; 5,562,646; 5,669,894; and 6,790,798 as well as U.S. Patent Publication Nos. 2004/0158212 and 2004/0097895.
- the diaper 100 may also include elasticized leg cuffs 156 .
- the leg cuffs 156 can be and are sometimes also referred to as leg bands, side flaps, barrier cuffs, elastic cuffs or gasketing cuffs.
- the elasticized leg cuffs 156 may be configured in various ways to help reduce the leakage of body exudates in the leg regions.
- Example leg cuffs 156 may include those described in U.S. Pat. Nos. 3,860,003; 4,909,803;
- diaper pants may be manufactured with a ring-like elastic belt 104 and provided to consumers in a configuration wherein the front waist region 116 and the back waist region 118 are connected to each other as packaged, prior to being applied to the wearer.
- diaper pants may have a continuous perimeter waist opening 110 and continuous perimeter leg openings 112 such as shown in FIG. 1 .
- the ring-like elastic belt 104 is defined by a first elastic belt 106 connected with a second elastic belt 108 .
- the first elastic belt 106 defines first and second opposing end regions 106 a, 106 b and a central region 106 c
- the second elastic 108 belt defines first and second opposing end regions 108 a, 108 b and a central region 108 c.
- the central region 106 c of the first elastic belt is connected with the first waist region 116 of the chassis 102
- the central region 108 c of the second elastic belt 108 is connected with the second waist region 118 of the chassis 102 .
- the first end region 106 a of the first elastic belt 106 is connected with the first end region 108 a of the second elastic belt 108 at first side seam 178
- the second end region 106 b of the first elastic belt 106 is connected with the second end region 108 b of the second elastic belt 108 at second side seam 180 to define the ring-like elastic belt 104 as well as the waist opening 110 and leg openings 112 .
- the first elastic belt 106 also defines an outer lateral edge 107 a and an inner lateral edge 107 b
- the second elastic belt 108 defines an outer lateral edge 109 a and an inner lateral edge 109 b.
- the outer lateral edges 107 a, 109 a may also define the front waist edge 120 and the laterally extending back waist edge 122 .
- the first elastic belt and the second elastic belt may also each include an outer, garment facing layer 162 and an inner, wearer facing layer 164 . It is to be appreciated that the first elastic belt 106 and the second elastic belt 108 may comprise the same materials and/or may have the same structure.
- the first elastic belt 106 and the second elastic belt may comprise different materials and/or may have different structures. It should also be appreciated that the first elastic belt 106 and the second elastic belt 108 may be constructed from various materials.
- the first and second belts may be manufactured from materials such as plastic films; apertured plastic films; woven or nonwoven webs of natural materials (e.g., wood or cotton fibers), synthetic fibers (e.g., polyolefins, polyamides, polyester, polyethylene, or polypropylene fibers) or a combination of natural and/or synthetic fibers; or coated woven or nonwoven webs.
- the first and second elastic belts include a nonwoven web of synthetic fibers, and may include a stretchable nonwoven.
- the first and second elastic belts include an inner hydrophobic, non-stretchable nonwoven material and an outer hydrophobic, non-stretchable nonwoven material.
- the first and second elastic belts 106 , 108 may also each include belt elastic material interposed between the outer layer 162 and the inner layer 164 .
- the belt elastic material may include one or more elastic elements such as strands, ribbons, or panels extending along the lengths of the elastic belts. As shown in FIGS. 2A , 3 A, and 3 B, the belt elastic material may include a plurality of elastic strands 168 which may be referred to herein as outer, waist elastics 170 and inner, waist elastics 172 .
- the outer, waist elastics 170 extend continuously laterally between the first and second opposing end regions 106 a, 106 b and across the central region 106 c of the first elastic belt 106 and between the first and second opposing end regions 108 a, 108 b and across the central region 108 c of the second elastic belt 108 .
- some elastic strands 168 may be configured with discontinuities in areas.
- the inner, waist elastics 172 extend intermittently along the first and second elastic belts 106 , 108 . More particularly, the inner, waist elastics 172 extend along the first and second opposing end regions 106 a, 106 b and partially across the central region 106 c of the first elastic belt 106 .
- the inner, waist elastics 172 also extend along the first and second opposing end regions 108 a, 108 b and partially across the central region 108 c of the second elastic belt 108 . As such, the inner, waist elastics 172 do not extend across the entirety of the central regions 106 c, 108 c of the first and second elastic belts 106 , 108 . Thus, some elastic strands 168 may not extend continuously through regions of the first and second elastic belts 106 , 108 where the first and second elastic belts 106 , 108 overlap the absorbent assembly 140 .
- some elastic strands 168 may partially extend into regions of the first and second elastic belts 106 , 108 where the first and second elastic belts 106 , 108 overlap the absorbent assembly 140 . In some embodiments, some elastic strands 168 may not extend into any region of the first and second elastic belts 106 , 108 where the first and second elastic belts 106 , 108 overlap the absorbent assembly 140 . It is to be appreciated that the first and/or second elastic belts 106 , 108 may be configured with various configurations of discontinuities in the outer, waist elastics 170 and/or the inner, waist elastic elastics 172 .
- the elastic strands 168 may be disposed at a constant interval in the longitudinal direction. In other embodiments, the elastic strands 168 may be disposed at different intervals in the longitudinal direction. As discussed in more detail below, the belt elastic strands 168 , in a stretched condition, may be interposed and joined between the uncontracted outer layer and the uncontracted inner layer. When the belt elastic material is relaxed, the belt elastic material returns to an unstretched condition and contracts the outer layer and the inner layer. The belt elastic material may provide a desired variation of contraction force in the area of the ring-like elastic belt.
- FIG. 2B shows a plan view of a diaper pant 100 having the same components as described above with reference to FIG. 2A , except the first laterally extending end edge 144 of the chassis 102 is aligned along and coincides with the outer lateral edge 107 a of the first elastic belt 106 , and the second laterally extending end edge 146 is aligned along and coincides with the outer lateral edge 109 a of the second belt 108 .
- FIG. 4 shows a schematic view of a converting apparatus 300 adapted to manufacture pant diapers 100 .
- the method of operation of the converting apparatus 300 may be described with reference to the various components of pant diapers 100 described above and shown in FIGS. 1 and 2A .
- the converting apparatus 300 shown in FIG. 4 operates to advance discrete chassis 102 along a machine direction MD such that the lateral axis of each chassis 102 is parallel with the machine direction, and wherein the chassis 102 are spaced apart from each other along the machine direction.
- Opposing waist regions 116 , 118 of the spaced apart chassis 102 are then connected with continuous lengths of advancing first and second elastic belt substrates 406 , 408 .
- the chassis 102 are then folded along the lateral axis to bring the first and second elastic belt substrates 406 , 408 into a facing relationship, and the first and second elastic belt substrates are connected together along intermittently spaced seams 336 .
- the elastic belt substrates 406 , 408 are cut along the seams 336 to create discrete diapers 100 , such as shown in FIG. 1 .
- a first continuous substrate layer in the form of a continuous length of outer layer belt material 162 ; a second continuous substrate layer in the form of a continuous length of inner layer belt material 164 ; and elastics 168 are combined to form a continuous elastic laminate in the form of a belt material 402 .
- continuous lengths of outer layer belt material 162 , inner layer belt material 164 , outer elastic strands 170 and inner elastic strands 172 are advanced in a machine direction MD and combined at nip rolls 502 to form a continuous length of belt material 402 .
- the outer elastic strands 170 and inner elastic strands 172 are stretched in the machine direction MD.
- adhesive 504 may be applied to the elastic strands 170 , 172 as well as either or both of the continuous lengths of outer layer belt material 162 and inner layer belt material 164 before entering nip rolls 502 . Further, adhesive 504 may be applied intermittently along the lengths of the inner elastic strands 172 and/or intermittently along the length of either or both of the continuous lengths of outer layer belt material 162 and inner layer belt material 164 before entering nip rolls 502 . As such, the inner elastic strands 172 are intermittently bonded to either or both of the continuous lengths of outer layer belt material 162 and inner layer belt material 164 along the machine direction MD. More particularly, as shown in FIG.
- the belt material 402 may include non-bonded regions 403 intermittently spaced between bonded regions 405 along the machine direction MD.
- the inner elastic strands 172 are not bonded to either the outer layer belt material 162 or inner layer belt material 164 in the non-bonded regions 403 .
- the inner elastic strands 172 are bonded to the outer layer belt material 162 and/or inner layer belt material 164 in the bonded regions 405 .
- dashed lines 401 are shown in FIGS. 5 A- 5 C 2 to represent example boundaries between the non-bonded regions 403 and the bonded regions 405 .
- non-bonded regions 403 and the bonded regions 405 can also be curved, angled, and/or straight.
- adhesive 504 may be applied in areas between the individual inner elastic strands 172 to bond the outer layer belt material 162 and inner layer belt material 164 together in the non-bonded regions 403 .
- FIG. 4 shows an embodiment wherein the belt material 402 is formed by combining continuous lengths of outer layer belt material 162 and inner layer belt material 164 with elastic strands 168
- the belt material 402 can be formed in various other ways.
- the first continuous substrate layer and the second continuous substrate layer may be formed by a folding portion of a single continuous substrate onto another portion of the single continuous substrate.
- FIG. 4A shows an embodiment wherein the belt material 402 is formed by combining continuous lengths of elastic strands 168 with a single continuous length of belt material 160 having a first surface 161 a and an opposing second surface 161 b.
- the continuous lengths of outer elastic strands 170 and inner elastic strands 172 are advanced in a machine direction MD and combined with the first surface 161 a of the belt material 160 at drum 528 .
- the outer elastic strands 170 and inner elastic strands 172 are stretched in the machine direction MD.
- the combined elastics 170 , 172 and the belt material 160 advance to a folding apparatus 530 adapted to fold a portion of the first surface 161 a of the belt material 160 onto another portion of the first surface 161 a such that the elastics 170 , 172 are intermittently bonded between the folded portions of the belt material 160 .
- a folding apparatus 530 adapted to fold a portion of the first surface 161 a of the belt material 160 onto another portion of the first surface 161 a such that the elastics 170 , 172 are intermittently bonded between the folded portions of the belt material 160 .
- FIG. 4 A 1 shows an arrangement wherein the belt material 160 includes opposing longitudinal edges 160 a, 160 b and laterally opposed edge regions 166 a, 166 b separated by a central region 166 c. And the elastics are combined with the central region 166 c of the first surface 161 a of the belt material 160 .
- the folder 530 folds the opposing edge regions 166 a, 166 b onto the central region 166 c. As such, the elastics are sandwiched between the first surface 161 a of the opposing edge regions 166 a, 166 b and the first surface 161 a of the central region 166 c.
- an elastic laminate can be formed wherein the first substrate layer may comprise the central region 166 c, and wherein the second substrate layer may comprise the folded edge regions 166 a, 166 b. From the folder 530 , the combined elastics 168 and the belt material 160 may enter nip rolls 502 to form the belt material 402 .
- the belt material may be folded in various ways at the 530 .
- the elastics 168 may be combined with the belt material 160 in such a way that the folder 530 need only fold the belt material 160 once along the center region 166 c.
- the folder 530 may fold the first surface 161 a of the belt material 160 onto itself such that the first longitudinal edge 161 a is aligned with the second longitudinal edge 161 b.
- the belt material 402 is formed by first combining continuous lengths of outer elastic strands 170 with the opposing edge regions 166 a, 166 b of single continuous length of belt material 160 at drum 528 .
- the outer elastic strands 170 are stretched in the machine direction MD.
- the combined elastics 170 and the belt material 160 advance to a folding apparatus 530 adapted to fold the opposing edge regions 166 a, 166 b onto themselves.
- the outer elastics 170 are sandwiched between first surfaces 161 a of the opposing edge regions 166 a, 166 b, such as shown in FIG. 4 B 1 .
- the outer elastics 170 and belt material 160 are combined with the inner elastics 172 and the inner belt material 164 at nip rolls 502 to form the belt material 402 as shown in FIG. 4 B 2 .
- an elastic laminate can be formed wherein the first substrate layer may comprise portion of the folded edge regions 166 a, 166 b and/or the central region 166 c, and wherein the second substrate layer may comprise portions of the folded edge regions 166 a, 166 b and/or the central region 166 c, and the belt material 164 .
- adhesive 504 may be applied to the elastic strands 170 and/or the continuous length of belt material 160 before entering the folder 530 .
- the continuous length of belt material 402 advances in the machine direction MD to a cutter 506 that cuts the belt material 402 into two continuous belt substrates, referred to as a first belt substrate 406 and a second belt substrate 408 .
- the cutter 506 may be configured in various ways.
- the cutter 506 may be a slitter or a die cutter that separates the belt material into two continuous belt substrates with either a straight line cut and/or a curved line cut.
- the cutter 506 may also be configured as a perforator that perforates the belt material with a line of weakness and wherein the belt material is separated along the line of weakness in a later step.
- the first and second belt substrates 406 , 408 advance through a diverter 508 that separates the first and second belt substrates from each other in the cross direction CD, such as shown in FIG. 5B .
- the elastic strands 170 , 172 and thus, the continuous length of first and second belt substrates 406 , 408 are maintained in a stretched condition while advancing along the machine direction MD.
- the diverter 508 may be configured in various ways.
- the diverter 508 may include turn bars angled at 45 degrees or some other angle with respect to the machine direction.
- the diverter may include cambered rollers.
- diverters in the form of a pivot table, such as, for example, the FIFE-500 Web Guiding System, by Maxcess-FIFE Corporation.
- the diverter may also include instrumentation and web edge control features that allow for precise active control of the substrate positions.
- the first and second belt substrates 406 , 408 advance from the diverter 508 to a cutting unit 510 .
- the cutting unit 510 then intermittently deactivates the elastics 168 in the first and second belt substrates 406 , 408 . More particularly, the cutting unit 510 may sever, cut, and/or break the inner elastics 168 , 172 in the non-bonded regions 403 of the first and second belt substrates 406 , 408 . As shown in FIGS.
- first and second belt substrates 406 , 408 each have elastic regions 405 corresponding with the bonded regions 405 , and deactivated regions 403 corresponding with the non-bonded regions 403 where the elastics 172 have been severed. In some embodiments such as shown in FIGS.
- the cutting unit 510 may be configured to sever only the elastics 168 , 172 in the non-bonded regions 403 of the first and/or second belt substrates 406 , 408 without cutting through either the outer layer belt material 162 or the inner layer belt material 164 .
- the cutting unit 510 may be configured to cut the elastics 168 , 172 in the non-bonded regions 403 of the first and second belt substrates 406 , 408 while also cutting through one or both the outer layer belt material 162 and the inner layer belt material 164 .
- FIGS. 5 C 1 A and 5 C 2 A show a configuration where the cutting unit 510 cuts slits 413 through the inner layer belt material 164 while cutting the elastics 168 , 172 in the non-bonded regions 403 of the first and second belt substrates 406 , 408 , without cutting through the outer layer belt material 162 .
- FIGS. 5 C 1 B and 5 C 2 B show a configuration where the cutting unit 510 cuts slits 413 through both the inner layer belt material 164 and the outer layer material 162 while cutting the elastics 168 , 172 in the non-bonded regions 403 of the first and second belt substrates 406 , 408 .
- the inner elastic strands 172 are not bonded to the either the outer layer belt material 162 or inner layer belt material 164 in the non-bonded regions 403 .
- the non-bonded regions 403 and bonded regions 405 may be configured with various adhesive applications.
- the outer layer belt material 162 and the inner layer belt material 164 may not be bonded together in the non-bonded regions 403 .
- adhesive may be applied to bond the outer layer belt material 162 and the inner layer belt material 164 together in the non-bonded regions 403 .
- FIG. 5 B 3 shows a detailed view of a belt substrate 408 with the outer layer belt material 164 cut-away to illustrate an embodiment of adhesive application in the bonded regions 405 and the non-bonded regions 403 . More particularly, FIG. 5 B 3 shows an example adhesive application configuration wherein adhesive 504 A has been applied to the belt materials 162 , 164 and/or elastics 168 , 172 in the bonded regions 405 , and wherein adhesive 504 B has been applied either or both belt materials 162 , 164 , and not the elastics 168 , 172 , in the non-bonded regions 403 .
- adhesive 504 A may be intermittently applied along the machine direction MD in the bonded regions 405
- adhesive 504 B may be intermittently applied along the machine direction in the non-bonded regions 403
- adhesive 504 C may be continuous applied to the belt materials 162 , 164 and/or elastics 168 , 170 in the bonded regions 405 and non-bonded regions 403 .
- adhesive 504 A may be applied in strips along the elastics 168 , 172 extending the machine direction MD in the bonded regions 405 . As such, the adhesive 504 A bonds the inner layer belt material 162 , the outer layer belt material 164 , and the elastics 168 , 172 together in the bonded regions 405 .
- adhesive 504 B may be applied in strips between the elastics 168 , 172 extending the machine direction MD in the non-bonded regions 403 . As such, the adhesive 504 B bonds the inner layer belt material 162 and the outer layer belt material 164 together in the non-bonded regions 403 .
- FIG. 5 C 3 shows a detailed view of the belt substrate 408 from FIG. 5 B 3 with the outer layer belt material 164 cut-away to illustrate the elastics 168 , 172 after having been cut in the non-bonded regions 403 wherein the severed ends 404 of the elastics 168 , 172 have retracted or snapped back to the bonded regions 405 .
- cutting units 510 can be used with the apparatuses and methods herein.
- Such cutting unit configurations may include features of the cutting knives/units disclosed, for example, in U.S. Pat. Nos. 5,393,360; 7,708,849; 7,861,756; 7,777,094; U.S. Patent Application No. 13/434,912, filed on Mar. 30, 2012, further identified by Attorney Docket Number 12394; and U.S. Patent Application No. 61/617,713, filed on Mar. 30, 2012, further identified by Attorney Docket Number AA833FP-AF, which are all incorporated by reference herein.
- the cutting units may be configured with die knife, flexible blade, and/or compression roll features, and may also include additional features to control knife-anvil gaps and/or force.
- FIGS. 6 and 7 show an example embodiment of a cutting unit 510 including a cutting roll 600 and an anvil roll 602 .
- the cutting roll 600 is adapted to rotate around an axis of rotation 604 and defines an outer circumferential surface 606 .
- the anvil roll 602 is adapted to rotate around an axis of rotation 608 and defines an outer circumferential surface 610 .
- the cutting roll 600 is adjacent to the anvil roll 602 and create a nip 603 defined by a minimum distance, D, between the outer circumferential surface 606 of the cutting roll 602 and the outer circumferential surface 610 of the anvil roll 602 .
- the cutting roll 600 may also include one or more blades 612 .
- Each blade 612 may have a proximal end portion 614 extending in a cross direction (CD) a length, L, along the outer circumferential surface 606 of the cutting roll 600 .
- the blades 612 may define a dimension, H 1 , extending from the proximal end portion 614 to a distal edge 616 .
- the blades may extend radially outward from the outer circumferential surface 606 of the cutting roll 600 to the distal edge 616 by a distance, H.
- the blades 612 may extend radially outward from the outer circumferential surface 606 to define an angle of 90 degrees or less, such as about 45 degrees, between the blade 612 and a tangential plane intersecting the proximal end portion 614 on the outer circumferential surface 606 .
- H 1 may be equal to H, and in some embodiments, H 1 may be greater than H.
- the blades 612 may define a rectangular shape having a first surface 618 and an opposing second surface 620 separated by a thickness, t.
- the blades 612 may have a small thickness, t, relative to the distance, H 1 , such that blades 612 are flexible or bendable.
- the cutting unit 510 may be arranged such that the first and second belt substrates 406 , 408 advance in a machine direction MD to partially wrap around the outer circumferential surface 610 of the anvil roll 602 .
- the anvil roll 602 and the cutting roll 600 rotate, portions of the first surfaces 618 and the distal edges 616 of the blades 612 are moved into contact with the first and second belt substrates 406 , 408 , such as shown in FIG. 8A .
- the distance, H, of each blade 612 is greater than the distance, D, between the cutting roll 600 and the anvil roll 602 .
- the blades 612 rotate though the nip 603 between the cutting roll 600 and the anvil roll 602 , the blades 612 flex or bend inward along the second surface 620 . As such, portions of the first surfaces 618 and/or the distal edges 616 of the blades 612 exert pressure on the first and second belt substrates 406 , 408 to cut the elastics 168 , 172 in the non-bonded regions 403 .
- FIG. 8C as the cutting roll 600 continues to rotate, the blades 612 move away from the nip 603 and straighten back out along the distance, H 1 , thus returning to the original blade shapes before entering the nip 603 .
- the belt substrate materials may be arranged in various ways on the cutting unit 510 .
- the front belt substrate material 406 and the back belt substrate material 408 may advance in the machine direction MD to partially wrap around the rotating anvil roll 602 such that the outer layer belt material 162 of the front belt substrate material 406 and the back belt substrate material 408 are in contact with the outer circumferential surface 610 of the anvil roll 602 .
- the blades 612 of the rotating cutting roll 600 contact the inner layer belt material 164 of the front belt substrate material 406 and the back belt substrate material 408 while advancing through the nip 603 .
- the front and back belt substrates 406 , 408 may be arranged such that either the inner layer of belt material 162 or the outer layer of belt material 164 is in contact with the outer circumferential surface 610 of the anvil roll 602 .
- the front belt substrate material 406 and the back belt substrate material 408 may be arranged to partially wrap around the rotating anvil roll 602 such that the inner layer of belt material 162 of the front belt substrate material 406 and the back belt substrate material 408 are in contact with the outer circumferential surface 610 of the anvil roll 602 .
- 6-8C may be configured to sever only the elastics 168 , 172 in the non-bonded regions 403 of the first and/or second belt substrates 406 , 408 without cutting through either the outer layer belt material 162 or the inner layer belt material 164 .
- the cutting unit 510 may be configured to cut the elastics 168 , 172 in the non-bonded regions 403 of the first and second belt substrates 406 , 408 while also cutting through one or both the outer layer belt material 162 and the inner layer belt material 164 .
- the blades 612 of the cutting unit 500 exert pressure on the elastic laminates 300 to sever the elastics 302 .
- the pressure exerted by the blades 612 may also create a pressure bond between the first substrate layer and the second substrate layer.
- the distal edges 616 of the blades 612 may exert enough pressure on the nonwoven webs to melt and fuse some of the nonwoven fibers together, thus creating a bond 613 between the outer layer belt material 162 and the inner layer belt material 164 .
- Embodiments of the bond 613 are shown in FIGS. 5 C 1 C and 5 C 2 C. A shown in FIG. 1 , the bond 613 may be visible in the elastic belt 104 of the diaper 100 , and may correspond with a shape of the distal edge 616 of the blade 612 .
- the cutting unit 510 may be configured with various quantities of blades having various shapes and orientations.
- the cutting unit 510 shown in FIGS. 6-8C includes four blades 612 a, 612 b, 612 c, 612 d.
- the first and second blades 612 a, 612 b may be located 180 degrees apart from the third and fourth blades 612 c, 612 d on the outer circumferential surface 606 of the cutting roll 600 .
- the cutting roll may also be configured with various numbers of blades arranged circumferentially along the outer circumferential surface 606 of the cutting roll 600 .
- proximal end portions 614 of the first blade 612 a and the second blade 612 b may also be aligned with each other and with the axis of rotation 604 so as to extend in a straight line in the cross direction (CD) perpendicular to the machine direction (MD).
- proximal end portions 614 of the third blade 612 c and the fourth blade 612 d may be aligned with each other and with the axis of rotation 604 so as to extend in a straight line in the cross direction (CD) perpendicular to the machine direction (MD).
- first blade 612 a and the second blade 612 b, as well as the third and fourth blades 612 c, 612 d may define different lengths, L, and may separated from each other by various distances in the cross direction CD.
- the lengths, L, of the blades 612 are configured such so as to engage portions of the first and second belt substrates 406 , 408 so as to cut the elastics 168 , 172 without cutting elastics 168 , 170 .
- the blades 612 may be configured to cut the elastics 168 , 172 simultaneously in the CD direction along in a substantially straight line.
- the cutting roll 600 may be configured with more than or less than two blades 612 aligned along the CD direction of outer circumferential surface 606 of the cutting roll 600 .
- the cutting roll 600 may be configured with a single blade 612 extending along the CD direction for a length, L, on the outer circumferential surface 606 .
- the first and second belt substrates 406 , 408 advance in the machine direction MD and are combined with discrete chassis 102 .
- a continuous length of chassis assemblies 302 are advanced in a machine direction MD to a carrier apparatus 512 and cut into discrete chassis 102 with knife roll 514 .
- the continuous length of chassis assemblies 302 may include absorbent assemblies 140 sandwiched between topsheet material 138 and backsheet material 136 , leg elastics, barrier leg cuffs and the like. A portion of the chassis assembly is cut-away to show a portion of the topsheet material 138 and an absorbent assembly 140 .
- the carrier apparatus 512 rotates and advances the discrete chassis 102 in the machine direction MD in the orientation shown in FIG. 5 E 1 , wherein the longitudinal axis 124 of the chassis 102 is rotated from generally parallel with the machine direction MD to a position that is generally perpendicular to the machine direction. While the chassis 102 shown in FIG. 5 E 1 is shown with the second laterally extending end edge 146 as a leading edge and the first laterally extending end edge 144 as the trailing edge, it is to be appreciated that in other embodiments, the chassis 102 may be advanced in other orientations.
- the chassis may be oriented such that the second laterally extending end edge 146 is a trailing edge and the first laterally extending end edge 144 is a leading edge.
- the carrier apparatus 308 also rotates while at the same time changing the orientation of the advancing chassis 102 .
- the carrier apparatus 308 may also change the speed at which the chassis 102 advances in the machine direction MD.
- FIG. 5 E 2 shows an orientation of the chassis 102 on the carrier apparatus 308 while advancing in the machine direction that is different from that depicted in FIG. 5 E 1 . More particularly, FIG. 5 E 2 shows the chassis 102 with the lateral axis 126 of the chassis 102 generally parallel with the machine direction MD, and wherein the first longitudinal side edge 128 is the leading edge and the second longitudinal side edge 130 is the trailing edge.
- the chassis 102 are transferred from the carrier apparatus 512 and combined with advancing, continuous lengths of belt substrates 406 , 408 , which are subsequently cut to form first and second elastic belts 106 , 108 on diapers 100 .
- the chassis 102 are transferred from the carrier apparatus 512 to a nip 516 between the carrier apparatus 512 and a roll 518 where the chassis 102 are combined with continuous lengths of advancing front belt 406 substrate material and back belt substrate material 408 .
- the front belt substrate material 406 and the back belt substrate material 408 each define a wearer facing surface 312 and an opposing garment facing surface 314 .
- the wearer facing surface 312 of the first belt substrate 406 may be combined with the garment facing surface 134 of the chassis 102 along the first waist region 116
- the wearer facing surface 312 of the second belt substrate 408 may be combined with the garment facing surface 134 of the chassis 102 along the second waist region 118 . As shown in FIG.
- adhesive 520 may be intermittently applied to the wearer facing surface 312 of the first and second belt substrates 406 , 408 before combining with the discrete chassis 102 at the nip 516 between roll 518 and the carrier apparatus 512 .
- the chassis 102 may be joined to the first and second belts in various different ways, such as for example, thermal bonds, pressure bonds, ultrasonic bonds, adhesives and combinations thereof.
- adhesive 520 may be intermittently applied to portions of the body facing surface 312 at the non-bonded regions 403 of the first belt substrate 406 and/or the second belt substrate 408 .
- the garment facing surface 134 of the chassis 102 may be combined in an overlapping relationship with the non-bonded regions 403 of the first belt substrate 406 and/or the second belt substrate 408 .
- the non-bonded regions 403 of the first and second belt substrates 406 , 408 may correspond with and/or define the central regions 106 c, 108 c of the first and second elastic belts 106 , 108 discussed above with reference to FIGS. 1-2B .
- the bonded regions 405 may correspond with and/or define the opposing end regions 106 a, 106 b, 108 a, 108 b of the of the first and second elastic belts 106 , 108 discussed above with reference to FIGS. 1-2B .
- a continuous length of absorbent articles 400 are defined by multiple discrete chassis 102 spaced from each other along the machine direction MD and connected with each other by the second belt substrate 408 and the first belt substrate 406 .
- the continuous length of absorbent articles 400 advances from the nip 516 to a folding apparatus 522 .
- each chassis 102 is folded in the cross direction CD along a lateral axis 126 to place the first waist region 116 , and specifically, the inner, body facing surface 132 into a facing, surface to surface orientation with the inner, body surface 132 of the second waist region 118 .
- the folding of the chassis also positions the wearer facing surface 312 of the second belt substrate 408 extending between each chassis 102 in a facing relationship with the wearer facing surface 312 of the first belt substrate 406 extending between each chassis 102 .
- the folded discrete chassis 102 connected with the first and second belt substrates 406 , 408 are advanced from the folding apparatus 522 to a bonder 524 .
- the bonder 524 operates to bond a portion of the second belt substrate 408 extending between each chassis 102 with a portion of the first belt substrate 406 extending between each chassis 102 , thus creating discrete bond regions 336 .
- a continuous length of absorbent articles are advanced from the bonder 524 to a knife roll 526 where the discrete bond regions 336 are cut along the cross direction to create a first side seam 178 on an absorbent article 100 and a second side seam 180 on a subsequently advancing absorbent article.
Abstract
The present disclosure relates to methods and apparatuses for assembling absorbent articles, and more particularly, diapers, each including a chassis connected with front and back elastic belts. Opposing end regions of the chassis are connected with regions of the elastic belts where the elasticity of the elastic belts has been removed or deactivated. As discussed in more detail below, an elastic laminate is formed by intermittently bonding elastic strands between a first continuous substrate layer and a second continuous substrate layer. The elastic strands are then intermittently deactivated by severing the strands in the non-bonded regions to form deactivated regions of the elastic laminate. A plurality of chassis may then be bonded with the elastic laminate, wherein the first or second end regions of each chassis may be bonded with deactivated regions of the continuous elastic laminate.
Description
- The present disclosure relates to methods for manufacturing absorbent articles, and more particularly, to apparatuses and methods for making elastic belts for diapers.
- Along an assembly line, various types of articles, such as for example, diapers and other absorbent articles, may be assembled by adding components to and/or otherwise modifying an advancing, continuous web of material. For example, in some processes, advancing webs of material are combined with other advancing webs of material. In other examples, individual components created from advancing webs of material are combined with advancing webs of material, which in turn, are then combined with other advancing webs of material. In some cases, individual components created from advancing web or webs are combined with other individual components created from other advancing web or webs. Webs of material and component parts used to manufacture diapers may include: backsheets, topsheets, leg cuffs, waist bands, absorbent core components, front and/or back ears, fastening components, and various types of elastic webs and components such as leg elastics, barrier leg cuff elastics, stretch side panels, and waist elastics. Once the desired component parts are assembled, the advancing web(s) and component parts are subjected to a final knife cut to separate the web(s) into discrete diapers or other absorbent articles.
- Some diaper pant embodiments are configured with a chassis connected with front and back elastic belts, wherein opposing end regions of the front and back belts are connected with each other at side seams. In some instances, the elasticity of the front and back belts is removed in regions where the chassis connects with the belts. Thus, in some converting configurations adapted to assemble such diaper pants, stretched elastic strands are glued between two continuous nonwoven webs to form an elastic laminate. Regions of the elastic strands may then be intermittently deactivated along the length of the elastic laminate by cutting the elastic strands. Subsequent to deactivating the elastic strands, the elastic laminate may be subjected to additional handling and converting operations.
- However, cutting the elastic strands may damage the elastic laminate, resulting in a relatively poor aesthetic appearance. In addition, the ends of the cut elastic stands may snap back and in an uncontrolled fashion and consequently may end up in an undesired location within the laminate. Further, deactivating the elastics in an elastic laminate may weaken the laminate, making the laminate relatively more likely to tear, and/or may otherwise result in control and handling difficulties associated with differential stretch characteristics within the laminate. Consequently, it would be beneficial to provide methods and apparatuses that are configured to minimize handling of the elastic laminates after intermittently deactivating the elastics therein;
- and/or assemble the elastic laminate in such a way to maximize the aesthetic appearance of the laminate when placed in an assembled product.
- The present disclosure relates to methods and apparatuses for assembling absorbent articles, and more particularly, diapers, each including a chassis connected with front and back elastic belts. Opposing end regions of the chassis are connected with regions of the elastic belts where the elasticity of the elastic belts has been removed or deactivated. As discussed in more detail below, an elastic laminate is formed by intermittently bonding elastic strands between a first continuous substrate layer and a second continuous substrate layer. The elastic strands are then intermittently deactivated by severing the strands in the non-bonded regions to form deactivated regions of the elastic laminate. A plurality of chassis may then be bonded with the elastic laminate, wherein the first or second end regions of each chassis may be bonded with deactivated regions of the continuous elastic laminate.
- In one form, a method may be configured for assembling disposable pant diapers, each pant diaper comprising a chassis having a first end region and an opposing second end region separated from each other by a central region, and having a longitudinal axis and a lateral axis, the chassis comprising: a topsheet, a backsheet, and an absorbent core disposed between the topsheet and the backsheet. The method includes the steps of: advancing a first continuous substrate layer having a first surface and an opposing second surface in a machine direction, and defining a width in a cross direction; advancing a second continuous substrate layer having a first surface and an opposing second surface in a machine direction, and defining a width in a cross direction; advancing elastic strands in the machine direction in a stretched state; intermittently bonding the elastic strands in the stretched state between the first surface of the first substrate layer and the first surface of the second substrate layer to form an elastic laminate, the elastic laminate including bonded regions and non-bonded regions intermittently spaced along the machine direction, wherein the elastic strands are bonded to the first surface of the first substrate layer and the first surface of the second substrate layer in the bonded regions, and wherein the elastic strands are not bonded to the first surface of the first substrate layer and the first surface of the second substrate layer in the non-bonded regions; cutting the elastic laminate along the machine direction to form a first continuous elastic laminate and a second continuous elastic laminate, each of the first continuous elastic laminate and the second continuous elastic laminate including bonded regions and non-bonded regions; separating the first continuous elastic laminate and the second elastic laminate in the cross direction; severing elastic strands in the non-bonded regions of the first continuous elastic laminate and the second elastic laminate; and bonding the first end regions of each chassis with non-bonded regions of first continuous elastic laminate, and bonding the second end regions of each chassis with non-bonded regions of the second continuous elastic laminate.
- In another form, a method may be configured for assembling disposable pant diapers, each pant diaper comprising a chassis having a first end region and an opposing second end region separated from each other by a central region, and having a longitudinal axis and a lateral axis, the chassis comprising: a topsheet, a backsheet, and an absorbent core disposed between the topsheet and the backsheet. The method includes the steps of: advancing a first continuous substrate layer having a first surface and an opposing second surface in a machine direction, and defining a width in a cross direction; advancing a second continuous substrate layer having a first surface and an opposing second surface in a machine direction, and defining a width in a cross direction; advancing elastic strands in the machine direction in a stretched state; intermittently bonding the elastic strands in the stretched state between the first surface of the first substrate layer and the first surface of the second substrate layer to form a continuous elastic laminate, the continuous elastic laminate including bonded regions and non-bonded regions intermittently spaced along the machine direction, wherein the elastic strands are bonded to the first surface of the first substrate layer and the first surface of the second substrate layer in the bonded regions, and wherein the elastic strands are not bonded to the first surface of the first substrate layer and the first surface of the second substrate layer in the non-bonded regions; severing elastic strands in the non-bonded regions of the continuous elastic laminate by applying pressure to the first substrate layer, the second substrate layer, and the elastic strands with a distal edge of a blade; bonding the first substrate layer and the second substrate layer together with the distal edge of the blade; and positioning the first end region of each chassis with non-bonded regions of continuous elastic laminate.
-
FIG. 1 is a perspective view of a diaper pant. -
FIG. 2A is a partially cut away plan view of the diaper pant shown inFIG. 1 . -
FIG. 2B is a partially cut away plan view of a second embodiment of a diaper pant. -
FIG. 3A is a cross-sectional view of the diaper pants ofFIGS. 2A and 2B taken alongline 3A-3A. -
FIG. 3B is a cross-sectional view of the diaper pants ofFIGS. 2A and 2B taken alongline 3B-3B. -
FIG. 4 is a schematic side view of a converting apparatus adapted to manufacture diapers. -
FIG. 4A shows a first alternative converting embodiment for forming an elastic laminate. - FIG. 4A1 is a view of a continuous length of an elastic laminate from
FIG. 4A taken along line 4A1-4A1. -
FIG. 4B shows a second alternative converting embodiment for forming an elastic laminate. - FIG. 4B1 is a view of a continuous length of an elastic laminate from
FIG. 4B taken along line 4B1-4B1. - FIG. 4B2 is a view of a continuous length of an elastic laminate from
FIG. 4B taken along line 4B2-4B2. -
FIG. 5A is a view of a continuous length of an elastic laminate fromFIG. 4 taken along line 5A-5A. -
FIG. 5B is a view of the elastic laminate fromFIG. 4 after being slit into first and second belt substrates separated from each other in the cross direction CD taken along line 5B-5B. - FIG. 5B1 is a cross-sectional view of the first belt substrate from
FIG. 5B taken along line B1-B1. - FIG. 5B2 is a cross-sectional view of the second belt substrate from
FIG. 5B taken along line B2-B2. - FIG. 5B3 shows a detailed view of a belt substrate with the outer layer belt material cut-away to illustrate an embodiment of adhesive application.
-
FIG. 5C is a view of continuous lengths of advancing first and second belt substrates material fromFIG. 4 taken along line 5C-5C. - FIG. 5C1 is a cross-sectional view of the first belt substrate from
FIG. 5C taken along line C1-C1 showing elastics cut in non-bonded regions. - FIG. 5C2 is a cross-sectional view of the second belt substrate from
FIG. 5C taken along line C2-C2 showing elastics cut in non-bonded regions. - FIG. 5C3 shows a detailed view of the belt substrate from
FIG. 5C with the outer layer belt material cut-away to illustrate elastics after having been cut in the non-bonded regions. - FIG. 5C1A is a cross-sectional view of the first belt substrate from
FIG. 5C taken along line C1-C1 showing elastics and inner belt material cut in non-bonded regions. - FIG. 5C2A is a cross-sectional view of the second belt substrate from
FIG. 5C taken along line C2-C2 showing elastics and inner belt material cut in non-bonded regions. - FIG. 5C1B is a cross-sectional view of the first belt substrate from
FIG. 5C taken along line C1-C1 showing elastics, inner belt material, and outer belt material cut in non-bonded regions. - FIG. 5C2B is a cross-sectional view of the second belt substrate from
FIG. 5C taken along line C2-C2 showing elastics, inner belt material, and outer belt material cut in non-bonded regions. - FIG. 5C1C is a cross-sectional view of the first belt substrate from
FIG. 5C taken along line C1-C1 with the inner belt material and outer belt material bonded together by the cutting device. - FIG. 5C2C is a cross-sectional view of the second belt substrate from
FIG. 5C taken along line C2-C2 with the inner belt material and outer belt material bonded together by the cutting device. -
FIG. 5D is a view of a continuous length of chassis assemblies fromFIG. 4 taken alongline 5D-5D. - FIG. 5E1 is a view of a discrete chassis from
FIG. 4 taken along line 5E1-5E1. - FIG. 5E2 is a view of a discrete chassis from
FIG. 4 taken along line 5E2-5E2. -
FIG. 5F is a view of multiple discrete chassis spaced from each other along the machine direction MD and connected with each other by the front and back side panel material fromFIG. 4 taken along line 5F-5F. -
FIG. 5G is a view of folded multiple discrete chassis with the front and back side panel material in a facing relationship fromFIG. 4 taken alongline 5G-5G. -
FIG. 5H is a view of two discrete absorbent articles advancing the machine direction MD fromFIG. 4 taken along line 5H-5H. -
FIG. 6 is a perspective view of an embodiment of a cutting apparatus. -
FIG. 7 is a front side view of the cutting apparatus ofFIG. 6 as two blades are rotated toward two substrates partially wrapped around an anvil roll. -
FIG. 8A is a left side view of the cutting apparatus ofFIG. 7 showing the blade initiating contact with the substrate partially wrapped around the anvil roll. -
FIG. 8B shows the cutting apparatus ofFIG. 8A as the blade flexes while being rotated into contact with the substrate partially wrapped around the anvil roll. -
FIG. 8C shows the cutting apparatus ofFIG. 8B after the blade is rotated away from the substrate partially wrapped around the anvil roll. - The following term explanations may be useful in understanding the present disclosure: “Absorbent article” is used herein to refer to consumer products whose primary function is to absorb and retain soils and wastes. “Diaper” is used herein to refer to an absorbent article generally worn by infants and incontinent persons about the lower torso. The term “disposable” is used herein to describe absorbent articles which generally are not intended to be laundered or otherwise restored or reused as an absorbent article (e.g., they are intended to be discarded after a single use and may also be configured to be recycled, composted or otherwise disposed of in an environmentally compatible manner).
- An “elastic,” “elastomer” or “elastomeric” refers to materials exhibiting elastic properties, which include any material that upon application of a force to its relaxed, initial length can stretch or elongate to an elongated length more than 10% greater than its initial length and will substantially recover back to about its initial length upon release of the applied force.
- As used herein, the term “joined” encompasses configurations whereby an element is directly secured to another element by affixing the element directly to the other element, and configurations whereby an element is indirectly secured to another element by affixing the element to intermediate member(s) which in turn are affixed to the other element.
- “Longitudinal” means a direction running substantially perpendicular from a waist edge to a longitudinally opposing waist edge of an absorbent article when the article is in a flat out, uncontracted state, or from a waist edge to the bottom of the crotch, i.e. the fold line, in a bi-folded article. Directions within 45 degrees of the longitudinal direction are considered to be “longitudinal.” “Lateral” refers to a direction running from a longitudinally extending side edge to a laterally opposing longitudinally extending side edge of an article and generally at a right angle to the longitudinal direction. Directions within 45 degrees of the lateral direction are considered to be “lateral.”
- The term “substrate” is used herein to describe a material which is primarily two-dimensional (i.e. in an XY plane) and whose thickness (in a Z direction) is relatively small (i.e. 1/10 or less) in comparison to its length (in an X direction) and width (in a Y direction). Non-limiting examples of substrates include a web, layer or layers or fibrous materials, nonwovens, films and foils such as polymeric films or metallic foils. These materials may be used alone or may comprise two or more layers laminated together. As such, a web is a substrate.
- The term “nonwoven” refers herein to a material made from continuous (long) filaments (fibers) and/or discontinuous (short) filaments (fibers) by processes such as spunbonding, meltblowing, carding, and the like. Nonwovens do not have a defined woven or knitted filament pattern.
- The term “machine direction” (MD) is used herein to refer to the direction of material flow through a process. In addition, relative placement and movement of material can be described as flowing in the machine direction through a process from upstream in the process to downstream in the process.
- The term “cross direction” (CD) is used herein to refer to a direction that is generally perpendicular to the machine direction.
- The term “pant” (also referred to as “training pant”, “pre-closed diaper”, “diaper pant”, “pant diaper”, and “pull-on diaper”) refers herein to disposable absorbent articles having a continuous perimeter waist opening and continuous perimeter leg openings designed for infant or adult wearers. A pant can be configured with a continuous or closed waist opening and at least one continuous, closed, leg opening prior to the article being applied to the wearer. A pant can be preformed by various techniques including, but not limited to, joining together portions of the article using any refastenable and/or permanent closure member (e.g., seams, heat bonds, pressure welds, adhesives, cohesive bonds, mechanical fasteners, etc.). A pant can be preformed anywhere along the circumference of the article in the waist region (e.g., side fastened or seamed, front waist fastened or seamed, rear waist fastened or seamed.
- “Pre-fastened” refers herein to pant diapers manufactured and provided to consumers in a configuration wherein the front waist region and the back waist region are fastened or connected to each other as packaged, prior to being applied to the wearer. As such pant diapers may have a continuous perimeter waist opening and continuous perimeter leg openings designed for infant or adult wearers. As discussed in more detail below, a diaper pant can be preformed by various techniques including, but not limited to, joining together portions of the diaper using refastenable and/or permanent closure members (e.g., seams, heat bonds, pressure welds, adhesives, cohesive bonds, mechanical fasteners, etc.). In addition, pant diapers can be preformed anywhere along the circumference of the waist region (e.g., side fastened or connected, front waist fastened or connected, rear waist fastened or connected).
- The present disclosure relates to methods and apparatuses for assembling absorbent articles, and more particularly, diapers, each including a chassis connected with front and back elastic belts. The chassis may include a topsheet, a backsheet, and an absorbent core disposed between the topsheet and the backsheet. The chassis may also have a first end region and an opposing second end region separated from each other by a central region. As discussed in more detail below, opposing end regions of the chassis are connected with regions of the elastic belts where the elasticity of the elastic belts has been removed or deactivated. An elastic laminate may be formed by intermittently bonding elastic strands between a first continuous substrate layer and a second continuous substrate layer. As such, the elastic laminate includes bonded regions and non-bonded regions intermittently spaced along the machine direction, wherein the elastic strands are bonded to either the first substrate layer or the second substrate layer in the bonded regions, and wherein the elastic strands are not bonded to either the first substrate layer or the second substrate layer in the non-bonded regions. The elastic laminate is then cut along the machine direction to form a first continuous elastic laminate and a second continuous elastic laminate, each of the first continuous elastic laminate and the second continuous elastic laminate including bonded regions and non-bonded regions. The first continuous elastic laminate and the second elastic laminate are then separated from each other in the cross direction. The elastic strands are then intermittently deactivated by severing the strands in the non-bonded regions to form deactivated regions of the first continuous elastic laminate and the second continuous elastic laminate. As such, the first continuous elastic laminate and the second continuous elastic laminate each have elastic regions corresponding with the bonded regions, and deactivated regions corresponding with the non-bonded regions where the elastics have been severed. A plurality of chassis may then be bonded between first and second elastic laminates, wherein first and second end regions of each chassis is bonded with deactivated regions of first and second continuous elastic laminates.
- It is to be appreciated that the elastic laminate can be formed in various ways. For example, in some embodiments, the first continuous substrate layer may be formed from a first continuous substrate, and the second continuous substrate layer may be formed from a second continuous substrate. In other embodiments, the first continuous substrate layer and/or the second continuous substrate layer may be formed by folding a portion of a single continuous substrate onto another portion of the single continuous substrate.
- The processes and apparatuses discussed herein may be used to assemble elastic laminates in various types of substrate configurations, some of which may be used in the manufacture of different types of absorbent articles. To help provide additional context to the subsequent discussion of the process embodiments, the following provides a general description of absorbent articles in the form of diapers that include elastic laminates that may be assembled in accordance with the methods and apparatuses disclosed herein. Although the methods and apparatuses herein are discussed below in the context of manufacturing absorbent articles, it is to be appreciated that the assembly methods and apparatuses herein may be configured to manufacture various types of substrates having intermittently spaced elastic and inelastic regions.
-
FIGS. 1 and 2A show an example of adiaper pant 100 that may be assembled and folded in accordance with the apparatuses and methods disclosed herein. In particular,FIG. 1 shows a perspective view of adiaper pant 100 in a pre-fastened configuration, andFIG. 2A shows a plan view of thediaper pant 100 with the portion of the diaper that faces away from a wearer oriented towards the viewer. Thediaper pant 100 shown inFIGS. 1 and 2A includes achassis 102 and a ring-likeelastic belt 104. As discussed below in more detail, a firstelastic belt 106 and a secondelastic belt 108 are connected together to form the ring-likeelastic belt 104. - With continued reference to
FIG. 2A , thechassis 102 includes afirst waist region 116, asecond waist region 118, and acrotch region 119 disposed intermediate the first and second waist regions. Thefirst waist region 116 may be configured as a front waist region, and thesecond waist region 118 may be configured as back waist region. In some embodiments, the length of each of the front waist region, back waist region, and crotch region may be ⅓ of the length of theabsorbent article 100. Thediaper 100 may also include a laterally extendingfront waist edge 120 in thefront waist region 116 and a longitudinally opposing and laterally extending backwaist edge 122 in theback waist region 118. To provide a frame of reference for the present discussion, thediaper 100 andchassis 102 ofFIG. 2A is shown with alongitudinal axis 124 and alateral axis 126. In some embodiments, thelongitudinal axis 124 may extend through thefront waist edge 120 and through theback waist edge 122. And thelateral axis 126 may extend through a first longitudinal orright side edge 128 and through a midpoint of a second longitudinal orleft side edge 130 of thechassis 102. - As shown in
FIGS. 1 and 2A , thediaper pant 100 may include an inner, body facing surface 132, and an outer, garment facing surface 134. Thechassis 102 may include abacksheet 136 and a topsheet 138. Thechassis 102 may also include anabsorbent assembly 140 including an absorbent core 142 that may be disposed between a portion of the topsheet 138 and thebacksheet 136. As discussed in more detail below, thediaper 100 may also include other features, such as leg elastics and/or leg cuffs to enhance the fit around the legs of the wearer. - As shown in
FIG. 2A , the periphery of thechassis 102 may be defined by the firstlongitudinal side edge 128, a secondlongitudinal side edge 130; a first laterally extendingend edge 144 disposed in thefirst waist region 116; and a second laterally extendingend edge 146 disposed in thesecond waist region 118. Both side edges 128 and 130 extend longitudinally between thefirst end edge 144 and thesecond end edge 146. As shown inFIG. 2A , the laterally extendingend edges front waist edge 120 in thefront waist region 116 and the laterally extending backwaist edge 122 in theback waist region 118. When thediaper pant 100 is worn on the lower torso of a wearer, thefront waist edge 120 and theback waist edge 122 of thechassis 102 may encircle a portion of the waist of the wearer. At the same time, the chassis side edges 128 and 130 may encircle at least a portion of the legs of the wearer. And thecrotch region 119 may be generally positioned between the legs of the wearer with the absorbent core 142 extending from thefront waist region 116 through thecrotch region 119 to theback waist region 118. - It is to also be appreciated that a portion or the whole of the
diaper 100 may also be made laterally extensible. The additional extensibility may help allow thediaper 100 to conform to the body of a wearer during movement by the wearer. The additional extensibility may also help, for example, allow the user of thediaper 100 including achassis 102 having a particular size before extension to extend thefront waist region 116, theback waist region 118, or both waist regions of thediaper 100 and/orchassis 102 to provide additional body coverage for wearers of differing size, i.e., to tailor the diaper to an individual wearer. Such extension of the waist region or regions may give the absorbent article a generally hourglass shape, so long as the crotch region is extended to a relatively lesser degree than the waist region or regions, and may impart a tailored appearance to the article when it is worn. - As previously mentioned, the
diaper pant 100 may include abacksheet 136. Thebacksheet 136 may also define the outer surface 134 of thechassis 102. Thebacksheet 136 may be impervious to fluids (e.g., menses, urine, and/or runny feces) and may be manufactured from a thin plastic film, although other flexible liquid impervious materials may also be used. Thebacksheet 136 may prevent the exudates absorbed and contained in the absorbent core from wetting articles which contact thediaper 100, such as bedsheets, pajamas and undergarments. Thebacksheet 136 may also comprise a woven or nonwoven material, polymeric films such as thermoplastic films of polyethylene or polypropylene, and/or a multi-layer or composite materials comprising a film and a nonwoven material (e.g., having an inner film layer and an outer nonwoven layer). The backsheet may also comprise an elastomeric film. Anexample backsheet 136 may be a polyethylene film having a thickness of from about 0.012 mm (0.5 mils) to about 0.051 mm (2.0 mils). Exemplary polyethylene films are manufactured by Clopay Corporation of Cincinnati, Ohio, under the designation BR-120 and BR-121 and by Tredegar Film Products of Terre Haute, Ind., under the designation XP-39385. Thebacksheet 136 may also be embossed and/or matte-finished to provide a more clothlike appearance. Further, thebacksheet 136 may permit vapors to escape from the absorbent core (i.e., the backsheet is breathable) while still preventing exudates from passing through thebacksheet 136. The size of thebacksheet 136 may be dictated by the size of the absorbent core 142 and/or particular configuration or size of thediaper 100. - Also described above, the
diaper pant 100 may include a topsheet 138. The topsheet 138 may also define all or part of the inner surface 132 of thechassis 102. The topsheet 138 may be compliant, soft feeling, and non-irritating to the wearer's skin. It may be elastically stretchable in one or two directions. Further, the topsheet 138 may be liquid pervious, permitting liquids (e.g., menses, urine, and/or runny feces) to penetrate through its thickness. A topsheet 138 may be manufactured from a wide range of materials such as woven and nonwoven materials; apertured or hydroformed thermoplastic films; apertured nonwovens, porous foams; reticulated foams; reticulated thermoplastic films; and thermoplastic scrims. Woven and nonwoven materials may comprise natural fibers such as wood or cotton fibers; synthetic fibers such as polyester, polypropylene, or polyethylene fibers; or combinations thereof. If the topsheet 138 includes fibers, the fibers may be spunbond, carded, wet-laid, meltblown, hydroentangled, or otherwise processed as is known in the art. - Topsheets 138 may be selected from high loft nonwoven topsheets, apertured film topsheets and apertured nonwoven topsheets. Apertured film topsheets may be pervious to bodily exudates, yet substantially non-absorbent, and have a reduced tendency to allow fluids to pass back through and rewet the wearer's skin. Exemplary apertured films may include those described in U.S. Pat. Nos. 5,628,097; 5,916,661; 6,545,197; and 6,107,539.
- As mentioned above, the
diaper pant 100 may also include anabsorbent assembly 140 that is joined to thechassis 102. As shown inFIG. 2A , theabsorbent assembly 140 may have a laterally extendingfront edge 148 in thefront waist region 116 and may have a longitudinally opposing and laterally extending backedge 150 in theback waist region 118. The absorbent assembly may have a longitudinally extendingright side edge 152 and may have a laterally opposing and longitudinally extendingleft side edge 154, both absorbent assembly side edges 152 and 154 may extend longitudinally between thefront edge 148 and theback edge 150. Theabsorbent assembly 140 may additionally include one or more absorbent cores 142 or absorbent core layers. The absorbent core 142 may be at least partially disposed between the topsheet 138 and thebacksheet 136 and may be formed in various sizes and shapes that are compatible with the diaper. Exemplary absorbent structures for use as the absorbent core of the present disclosure are described in U.S. Pat. Nos. 4,610,678; 4,673,402; 4,888,231; and 4,834,735. - Some absorbent core embodiments may comprise fluid storage cores that contain reduced amounts of cellulosic airfelt material. For instance, such cores may comprise less than about 40%, 30%, 20%, 10%, 5%, or even 1% of cellulosic airfelt material. Such a core may comprises primarily absorbent gelling material in amounts of at least about 60%, 70%, 80%, 85%, 90%, 95%, or even about 100%, where the remainder of the core comprises a microfiber glue (if applicable). Such cores, microfiber glues, and absorbent gelling materials are described in U.S. Pat. Nos. 5,599,335; 5,562,646; 5,669,894; and 6,790,798 as well as U.S. Patent Publication Nos. 2004/0158212 and 2004/0097895.
- As previously mentioned, the
diaper 100 may also include elasticized leg cuffs 156. It is to be appreciated that the leg cuffs 156 can be and are sometimes also referred to as leg bands, side flaps, barrier cuffs, elastic cuffs or gasketing cuffs. The elasticized leg cuffs 156 may be configured in various ways to help reduce the leakage of body exudates in the leg regions. Example leg cuffs 156 may include those described in U.S. Pat. Nos. 3,860,003; 4,909,803; - 4,695,278; 4,795,454; and 4,704,115; and U.S. Patent Publication No. 2009/0312730A1.
- As mentioned above, diaper pants may be manufactured with a ring-like
elastic belt 104 and provided to consumers in a configuration wherein thefront waist region 116 and theback waist region 118 are connected to each other as packaged, prior to being applied to the wearer. As such, diaper pants may have a continuousperimeter waist opening 110 and continuousperimeter leg openings 112 such as shown inFIG. 1 . - As previously mentioned, the ring-like
elastic belt 104 is defined by a firstelastic belt 106 connected with a secondelastic belt 108. As shown inFIG. 2A , the firstelastic belt 106 defines first and second opposingend regions central region 106 c, and the second elastic 108 belt defines first and second opposingend regions central region 108 c. - The
central region 106 c of the first elastic belt is connected with thefirst waist region 116 of thechassis 102, and thecentral region 108 c of the secondelastic belt 108 is connected with thesecond waist region 118 of thechassis 102. As shown inFIG. 1 , thefirst end region 106 a of the firstelastic belt 106 is connected with thefirst end region 108 a of the secondelastic belt 108 atfirst side seam 178, and thesecond end region 106 b of the firstelastic belt 106 is connected with thesecond end region 108 b of the secondelastic belt 108 atsecond side seam 180 to define the ring-likeelastic belt 104 as well as thewaist opening 110 andleg openings 112. - As shown in
FIGS. 2A , 3A, and 3B, the firstelastic belt 106 also defines an outerlateral edge 107 a and an innerlateral edge 107 b, and the secondelastic belt 108 defines an outerlateral edge 109 a and an innerlateral edge 109 b. The outerlateral edges front waist edge 120 and the laterally extending backwaist edge 122. The first elastic belt and the second elastic belt may also each include an outer,garment facing layer 162 and an inner,wearer facing layer 164. It is to be appreciated that the firstelastic belt 106 and the secondelastic belt 108 may comprise the same materials and/or may have the same structure. In some embodiments, the firstelastic belt 106 and the second elastic belt may comprise different materials and/or may have different structures. It should also be appreciated that the firstelastic belt 106 and the secondelastic belt 108 may be constructed from various materials. For example, the first and second belts may be manufactured from materials such as plastic films; apertured plastic films; woven or nonwoven webs of natural materials (e.g., wood or cotton fibers), synthetic fibers (e.g., polyolefins, polyamides, polyester, polyethylene, or polypropylene fibers) or a combination of natural and/or synthetic fibers; or coated woven or nonwoven webs. In some embodiments, the first and second elastic belts include a nonwoven web of synthetic fibers, and may include a stretchable nonwoven. In other embodiments, the first and second elastic belts include an inner hydrophobic, non-stretchable nonwoven material and an outer hydrophobic, non-stretchable nonwoven material. - The first and second
elastic belts outer layer 162 and theinner layer 164. The belt elastic material may include one or more elastic elements such as strands, ribbons, or panels extending along the lengths of the elastic belts. As shown inFIGS. 2A , 3A, and 3B, the belt elastic material may include a plurality ofelastic strands 168 which may be referred to herein as outer, waist elastics 170 and inner, waist elastics 172. - As shown in
FIG. 2A , the outer, waist elastics 170 extend continuously laterally between the first and second opposingend regions central region 106 c of the firstelastic belt 106 and between the first and second opposingend regions central region 108 c of the secondelastic belt 108. In some embodiments, someelastic strands 168 may be configured with discontinuities in areas. For example, as shown inFIG. 2A , the inner, waist elastics 172 extend intermittently along the first and secondelastic belts end regions central region 106 c of the firstelastic belt 106. - The inner, waist elastics 172 also extend along the first and second opposing
end regions central region 108 c of the secondelastic belt 108. As such, the inner, waist elastics 172 do not extend across the entirety of thecentral regions elastic belts elastic strands 168 may not extend continuously through regions of the first and secondelastic belts elastic belts absorbent assembly 140. In some embodiments, someelastic strands 168 may partially extend into regions of the first and secondelastic belts elastic belts absorbent assembly 140. In some embodiments, someelastic strands 168 may not extend into any region of the first and secondelastic belts elastic belts absorbent assembly 140. It is to be appreciated that the first and/or secondelastic belts elastic elastics 172. - In some embodiments, the
elastic strands 168 may be disposed at a constant interval in the longitudinal direction. In other embodiments, theelastic strands 168 may be disposed at different intervals in the longitudinal direction. As discussed in more detail below, the beltelastic strands 168, in a stretched condition, may be interposed and joined between the uncontracted outer layer and the uncontracted inner layer. When the belt elastic material is relaxed, the belt elastic material returns to an unstretched condition and contracts the outer layer and the inner layer. The belt elastic material may provide a desired variation of contraction force in the area of the ring-like elastic belt. - It is to be appreciated that the
chassis 102 andelastic belts FIG. 2A . For example,FIG. 2B shows a plan view of adiaper pant 100 having the same components as described above with reference toFIG. 2A , except the first laterally extendingend edge 144 of thechassis 102 is aligned along and coincides with the outerlateral edge 107 a of the firstelastic belt 106, and the second laterally extendingend edge 146 is aligned along and coincides with the outerlateral edge 109 a of thesecond belt 108. - As previously mentioned, the apparatuses and methods according to the present disclosure may be utilized to assemble various components of
diapers 100. For example,FIG. 4 shows a schematic view of a convertingapparatus 300 adapted to manufacturepant diapers 100. The method of operation of the convertingapparatus 300 may be described with reference to the various components ofpant diapers 100 described above and shown inFIGS. 1 and 2A . - Although the following methods are provided in the context of the
diaper 100 shown inFIGS. 1 and 2A , it is to be appreciated that various embodiments of diapers and associated components, such as for example leg cuffs and waist bands, can be manufactured according the methods disclosed herein, such as for example, the absorbent articles disclosed in U.S. Pat. Nos. 7,569,039 and 5,745,922; U.S. Patent Publication Nos. 2005/0107764A1, 2012/0061016A1, and 2012/0061015A1; and the U.S. Patent Application entitled “Methods and Apparatuses for Making Leg Cuffs for Absorbent Articles,” filed Mar. 30, 2012, also identified by Attorney Docket Number 12395, which are all hereby incorporated by reference herein. - As described in more detail below, the converting
apparatus 300 shown inFIG. 4 operates to advancediscrete chassis 102 along a machine direction MD such that the lateral axis of eachchassis 102 is parallel with the machine direction, and wherein thechassis 102 are spaced apart from each other along the machine direction. Opposingwaist regions chassis 102 are then connected with continuous lengths of advancing first and secondelastic belt substrates chassis 102 are then folded along the lateral axis to bring the first and secondelastic belt substrates elastic belt substrates seams 336 to creatediscrete diapers 100, such as shown inFIG. 1 . - As shown in
FIGS. 4 and 5A , a first continuous substrate layer in the form of a continuous length of outerlayer belt material 162; a second continuous substrate layer in the form of a continuous length of innerlayer belt material 164; andelastics 168 are combined to form a continuous elastic laminate in the form of abelt material 402. More particularly, continuous lengths of outerlayer belt material 162, innerlayer belt material 164, outerelastic strands 170 and innerelastic strands 172 are advanced in a machine direction MD and combined at nip rolls 502 to form a continuous length ofbelt material 402. Before entering the nip rolls 502, the outerelastic strands 170 and innerelastic strands 172 are stretched in the machine direction MD. In addition, adhesive 504 may be applied to theelastic strands layer belt material 162 and innerlayer belt material 164 before entering nip rolls 502. Further, adhesive 504 may be applied intermittently along the lengths of the innerelastic strands 172 and/or intermittently along the length of either or both of the continuous lengths of outerlayer belt material 162 and innerlayer belt material 164 before entering nip rolls 502. As such, the innerelastic strands 172 are intermittently bonded to either or both of the continuous lengths of outerlayer belt material 162 and innerlayer belt material 164 along the machine direction MD. More particularly, as shown inFIG. 5A , thebelt material 402 may includenon-bonded regions 403 intermittently spaced between bondedregions 405 along the machine direction MD. Thus, the innerelastic strands 172 are not bonded to either the outerlayer belt material 162 or innerlayer belt material 164 in thenon-bonded regions 403. And the innerelastic strands 172 are bonded to the outerlayer belt material 162 and/or innerlayer belt material 164 in the bondedregions 405. For the purposes of clarity, dashedlines 401 are shown in FIGS. 5A-5C2 to represent example boundaries between thenon-bonded regions 403 and the bondedregions 405. It is to be appreciated that such boundaries between thenon-bonded regions 403 and the bondedregions 405 can also be curved, angled, and/or straight. As discussed in more detail below with reference to Figures SBA and 5CA, although the innerelastic strands 172 are not bonded to the either the outerlayer belt material 162 or innerlayer belt material 164 in thenon-bonded regions 403, adhesive 504 may be applied in areas between the individual innerelastic strands 172 to bond the outerlayer belt material 162 and innerlayer belt material 164 together in thenon-bonded regions 403. - Although
FIG. 4 shows an embodiment wherein thebelt material 402 is formed by combining continuous lengths of outerlayer belt material 162 and innerlayer belt material 164 withelastic strands 168, it is to be appreciated thebelt material 402 can be formed in various other ways. As previously mentioned, the first continuous substrate layer and the second continuous substrate layer may be formed by a folding portion of a single continuous substrate onto another portion of the single continuous substrate. For example,FIG. 4A shows an embodiment wherein thebelt material 402 is formed by combining continuous lengths ofelastic strands 168 with a single continuous length ofbelt material 160 having afirst surface 161 a and an opposingsecond surface 161 b. More particularly, the continuous lengths of outerelastic strands 170 and innerelastic strands 172 are advanced in a machine direction MD and combined with thefirst surface 161 a of thebelt material 160 atdrum 528. Before being combined atdrum 528, the outerelastic strands 170 and innerelastic strands 172 are stretched in the machine direction MD. From thedrum 528, the combinedelastics belt material 160 advance to afolding apparatus 530 adapted to fold a portion of thefirst surface 161 a of thebelt material 160 onto another portion of thefirst surface 161 a such that theelastics belt material 160. In the arrangement shown in FIGS. 4A and 4A1, adhesive 504 may be applied intermittently to theelastic strands belt material 160 before entering thefolder 530. For example, FIG. 4A1 shows an arrangement wherein thebelt material 160 includes opposinglongitudinal edges edge regions central region 166 c. And the elastics are combined with thecentral region 166 c of thefirst surface 161 a of thebelt material 160. Thefolder 530 folds the opposingedge regions central region 166 c. As such, the elastics are sandwiched between thefirst surface 161 a of the opposingedge regions first surface 161 a of thecentral region 166 c. - Thus, an elastic laminate can be formed wherein the first substrate layer may comprise the
central region 166 c, and wherein the second substrate layer may comprise the foldededge regions folder 530, the combinedelastics 168 and thebelt material 160 may enter niprolls 502 to form thebelt material 402. - It is to be appreciated that the belt material may be folded in various ways at the 530. For example, in some embodiments, the
elastics 168 may be combined with thebelt material 160 in such a way that thefolder 530 need only fold thebelt material 160 once along thecenter region 166 c. For example, thefolder 530 may fold thefirst surface 161 a of thebelt material 160 onto itself such that the firstlongitudinal edge 161 a is aligned with the secondlongitudinal edge 161 b. - In yet another example embodiment shown in
FIG. 4B , thebelt material 402 is formed by first combining continuous lengths of outerelastic strands 170 with the opposingedge regions belt material 160 atdrum 528. Before being combined atdrum 528, the outerelastic strands 170 are stretched in the machine direction MD. From thedrum 528, the combinedelastics 170 and thebelt material 160 advance to afolding apparatus 530 adapted to fold the opposingedge regions outer elastics 170 are sandwiched betweenfirst surfaces 161 a of the opposingedge regions folder 530, theouter elastics 170 andbelt material 160 are combined with theinner elastics 172 and theinner belt material 164 at nip rolls 502 to form thebelt material 402 as shown in FIG. 4B2. Thus, an elastic laminate can be formed wherein the first substrate layer may comprise portion of the foldededge regions central region 166 c, and wherein the second substrate layer may comprise portions of the foldededge regions central region 166 c, and thebelt material 164. In the arrangement shown in FIGS. 4B-4B2, adhesive 504 may be applied to theelastic strands 170 and/or the continuous length ofbelt material 160 before entering thefolder 530. - Referring back to
FIG. 4 , from the nip rolls 502 the continuous length ofbelt material 402 advances in the machine direction MD to acutter 506 that cuts thebelt material 402 into two continuous belt substrates, referred to as afirst belt substrate 406 and asecond belt substrate 408. Thecutter 506 may be configured in various ways. For example, in some embodiments thecutter 506 may be a slitter or a die cutter that separates the belt material into two continuous belt substrates with either a straight line cut and/or a curved line cut. Thecutter 506 may also be configured as a perforator that perforates the belt material with a line of weakness and wherein the belt material is separated along the line of weakness in a later step. From thecutter 506, the first andsecond belt substrates diverter 508 that separates the first and second belt substrates from each other in the cross direction CD, such as shown inFIG. 5B . Theelastic strands second belt substrates diverter 508 may be configured in various ways. For example, in some embodiments, thediverter 508 may include turn bars angled at 45 degrees or some other angle with respect to the machine direction. In some embodiments, the diverter may include cambered rollers. Other embodiments may include diverters in the form of a pivot table, such as, for example, the FIFE-500 Web Guiding System, by Maxcess-FIFE Corporation. The diverter may also include instrumentation and web edge control features that allow for precise active control of the substrate positions. - With continued reference to
FIGS. 4 , 5B, 5B1, and 5B2, the first andsecond belt substrates diverter 508 to acutting unit 510. Thecutting unit 510 then intermittently deactivates theelastics 168 in the first andsecond belt substrates cutting unit 510 may sever, cut, and/or break theinner elastics non-bonded regions 403 of the first andsecond belt substrates FIGS. 5C , 5C1, and 5C2, severed ends 404 of theinner elastics 172 retract or snap back to the bondedregions 405 of the first andsecond belt substrates second belt substrates elastic regions 405 corresponding with the bondedregions 405, and deactivatedregions 403 corresponding with thenon-bonded regions 403 where theelastics 172 have been severed. In some embodiments such as shown in FIGS. 5C1 and 5C2, thecutting unit 510 may be configured to sever only theelastics non-bonded regions 403 of the first and/orsecond belt substrates layer belt material 162 or the innerlayer belt material 164. In other configurations, thecutting unit 510 may be configured to cut theelastics non-bonded regions 403 of the first andsecond belt substrates layer belt material 162 and the innerlayer belt material 164. For example, FIGS. 5C1A and 5C2A show a configuration where thecutting unit 510cuts slits 413 through the innerlayer belt material 164 while cutting theelastics non-bonded regions 403 of the first andsecond belt substrates layer belt material 162. In another example, FIGS. 5C1B and 5C2B show a configuration where thecutting unit 510cuts slits 413 through both the innerlayer belt material 164 and theouter layer material 162 while cutting theelastics non-bonded regions 403 of the first andsecond belt substrates - As previously discussed, the inner
elastic strands 172 are not bonded to the either the outerlayer belt material 162 or innerlayer belt material 164 in thenon-bonded regions 403. However, it is to be appreciated that thenon-bonded regions 403 and bondedregions 405 may be configured with various adhesive applications. For example, in some configurations, the outerlayer belt material 162 and the innerlayer belt material 164 may not be bonded together in thenon-bonded regions 403. In some configurations, adhesive may be applied to bond the outerlayer belt material 162 and the innerlayer belt material 164 together in thenon-bonded regions 403. For example, FIG. 5B3 shows a detailed view of abelt substrate 408 with the outerlayer belt material 164 cut-away to illustrate an embodiment of adhesive application in the bondedregions 405 and thenon-bonded regions 403. More particularly, FIG. 5B3 shows an example adhesive application configuration wherein adhesive 504A has been applied to thebelt materials elastics regions 405, and wherein adhesive 504B has been applied either or bothbelt materials elastics non-bonded regions 403. As such, adhesive 504A may be intermittently applied along the machine direction MD in the bondedregions 405, and adhesive 504B may be intermittently applied along the machine direction in thenon-bonded regions 403. Further, as shown in FIGS. 5B3 and 5C3, adhesive 504C may be continuous applied to thebelt materials elastics regions 405 andnon-bonded regions 403. - With continued reference to FIG. 5B3, adhesive 504A may be applied in strips along the
elastics regions 405. As such, the adhesive 504A bonds the innerlayer belt material 162, the outerlayer belt material 164, and theelastics regions 405. In addition, adhesive 504B may be applied in strips between theelastics non-bonded regions 403. As such, the adhesive 504B bonds the innerlayer belt material 162 and the outerlayer belt material 164 together in thenon-bonded regions 403. Further, strips of the adhesive 504B does not bond theelastics layer belt material 162 or the outerlayer belt material 164 in thenon-bonded regions 403. FIG. 5C3 shows a detailed view of thebelt substrate 408 from FIG. 5B3 with the outerlayer belt material 164 cut-away to illustrate theelastics non-bonded regions 403 wherein the severed ends 404 of theelastics regions 405. - It is to be appreciated that various configurations of cutting
units 510 can be used with the apparatuses and methods herein. Such cutting unit configurations may include features of the cutting knives/units disclosed, for example, in U.S. Pat. Nos. 5,393,360; 7,708,849; 7,861,756; 7,777,094; U.S. Patent Application No. 13/434,912, filed on Mar. 30, 2012, further identified by Attorney Docket Number 12394; and U.S. Patent Application No. 61/617,713, filed on Mar. 30, 2012, further identified by Attorney Docket Number AA833FP-AF, which are all incorporated by reference herein. As such, the cutting units may be configured with die knife, flexible blade, and/or compression roll features, and may also include additional features to control knife-anvil gaps and/or force. -
FIGS. 6 and 7 show an example embodiment of acutting unit 510 including a cuttingroll 600 and ananvil roll 602. The cuttingroll 600 is adapted to rotate around an axis ofrotation 604 and defines an outercircumferential surface 606. And theanvil roll 602 is adapted to rotate around an axis ofrotation 608 and defines an outercircumferential surface 610. The cuttingroll 600 is adjacent to theanvil roll 602 and create a nip 603 defined by a minimum distance, D, between the outercircumferential surface 606 of the cuttingroll 602 and the outercircumferential surface 610 of theanvil roll 602. As shown inFIGS. 6 and 7 , the cuttingroll 600 may also include one ormore blades 612. Eachblade 612 may have aproximal end portion 614 extending in a cross direction (CD) a length, L, along the outercircumferential surface 606 of the cuttingroll 600. Theblades 612 may define a dimension, H1, extending from theproximal end portion 614 to adistal edge 616. In addition, from theproximal end portion 614, the blades may extend radially outward from the outercircumferential surface 606 of the cuttingroll 600 to thedistal edge 616 by a distance, H. It is to be appreciated that theblades 612 may extend radially outward from the outercircumferential surface 606 to define an angle of 90 degrees or less, such as about 45 degrees, between theblade 612 and a tangential plane intersecting theproximal end portion 614 on the outercircumferential surface 606. As such, in some embodiments, H1 may be equal to H, and in some embodiments, H1 may be greater than H. As shown inFIGS. 6 and 7 , theblades 612 may define a rectangular shape having afirst surface 618 and an opposingsecond surface 620 separated by a thickness, t. Theblades 612 may have a small thickness, t, relative to the distance, H1, such thatblades 612 are flexible or bendable. As shown inFIGS. 6-8C , thecutting unit 510 may be arranged such that the first andsecond belt substrates circumferential surface 610 of theanvil roll 602. As theanvil roll 602 and the cuttingroll 600 rotate, portions of thefirst surfaces 618 and thedistal edges 616 of theblades 612 are moved into contact with the first andsecond belt substrates FIG. 8A . As shown inFIGS. 8A-8C , the distance, H, of eachblade 612 is greater than the distance, D, between the cuttingroll 600 and theanvil roll 602. Thus, with reference toFIG. 8B , as theblades 612 rotate though thenip 603 between the cuttingroll 600 and theanvil roll 602, theblades 612 flex or bend inward along thesecond surface 620. As such, portions of thefirst surfaces 618 and/or thedistal edges 616 of theblades 612 exert pressure on the first andsecond belt substrates elastics non-bonded regions 403. Referring now toFIG. 8C , as the cuttingroll 600 continues to rotate, theblades 612 move away from thenip 603 and straighten back out along the distance, H1, thus returning to the original blade shapes before entering thenip 603. - It is to be appreciated that the belt substrate materials may be arranged in various ways on the
cutting unit 510. For example, as shown inFIGS. 6-8C , the frontbelt substrate material 406 and the backbelt substrate material 408 may advance in the machine direction MD to partially wrap around the rotatinganvil roll 602 such that the outerlayer belt material 162 of the frontbelt substrate material 406 and the backbelt substrate material 408 are in contact with the outercircumferential surface 610 of theanvil roll 602. As such, theblades 612 of therotating cutting roll 600 contact the innerlayer belt material 164 of the frontbelt substrate material 406 and the backbelt substrate material 408 while advancing through thenip 603. It is to be appreciated that the front andback belt substrates belt material 162 or the outer layer ofbelt material 164 is in contact with the outercircumferential surface 610 of theanvil roll 602. For example, in some embodiments, the frontbelt substrate material 406 and the backbelt substrate material 408 may be arranged to partially wrap around the rotatinganvil roll 602 such that the inner layer ofbelt material 162 of the frontbelt substrate material 406 and the backbelt substrate material 408 are in contact with the outercircumferential surface 610 of theanvil roll 602. As discussed above, thecutting unit 510 shown inFIGS. 6-8C may be configured to sever only theelastics non-bonded regions 403 of the first and/orsecond belt substrates layer belt material 162 or the innerlayer belt material 164. In other configurations, thecutting unit 510 may be configured to cut theelastics non-bonded regions 403 of the first andsecond belt substrates layer belt material 162 and the innerlayer belt material 164. - As discussed above, the
blades 612 of the cutting unit 500 exert pressure on theelastic laminates 300 to sever theelastics 302. In some embodiments, the pressure exerted by theblades 612 may also create a pressure bond between the first substrate layer and the second substrate layer. For example, in embodiments wherein the first and second substrate layers comprise the outerlayer belt material 162 and the innerlayer belt material 164, both including nonwoven webs, thedistal edges 616 of theblades 612 may exert enough pressure on the nonwoven webs to melt and fuse some of the nonwoven fibers together, thus creating abond 613 between the outerlayer belt material 162 and the innerlayer belt material 164. Embodiments of thebond 613 are shown in FIGS. 5C1C and 5C2C. A shown inFIG. 1 , thebond 613 may be visible in theelastic belt 104 of thediaper 100, and may correspond with a shape of thedistal edge 616 of theblade 612. - It is to be appreciated that the
cutting unit 510 may be configured with various quantities of blades having various shapes and orientations. For example, thecutting unit 510 shown inFIGS. 6-8C includes fourblades second blades 612 a, 612 b may be located 180 degrees apart from the third andfourth blades 612 c, 612 d on the outercircumferential surface 606 of the cuttingroll 600. It is to be appreciated that the cutting roll may also be configured with various numbers of blades arranged circumferentially along the outercircumferential surface 606 of the cuttingroll 600. Theproximal end portions 614 of thefirst blade 612 a and the second blade 612 b may also be aligned with each other and with the axis ofrotation 604 so as to extend in a straight line in the cross direction (CD) perpendicular to the machine direction (MD). Similarly,proximal end portions 614 of thethird blade 612 c and the fourth blade 612 d may be aligned with each other and with the axis ofrotation 604 so as to extend in a straight line in the cross direction (CD) perpendicular to the machine direction (MD). In addition, thefirst blade 612 a and the second blade 612 b, as well as the third andfourth blades 612 c, 612 d, may define different lengths, L, and may separated from each other by various distances in the cross direction CD. For example, the lengths, L, of theblades 612 are configured such so as to engage portions of the first andsecond belt substrates elastics elastics blades 612 may be configured to cut theelastics roll 600 may be configured with more than or less than twoblades 612 aligned along the CD direction of outercircumferential surface 606 of the cuttingroll 600. For example, in some embodiments, instead of having thefirst blade 612 a and the second blade 612 b, the cuttingroll 600 may be configured with asingle blade 612 extending along the CD direction for a length, L, on the outercircumferential surface 606. - Referring back to
FIG. 4 , from thecutting unit 510, the first andsecond belt substrates discrete chassis 102. As shown inFIGS. 4 and 5D , a continuous length ofchassis assemblies 302 are advanced in a machine direction MD to acarrier apparatus 512 and cut intodiscrete chassis 102 withknife roll 514. As shown inFIG. 5D , the continuous length ofchassis assemblies 302 may includeabsorbent assemblies 140 sandwiched between topsheet material 138 andbacksheet material 136, leg elastics, barrier leg cuffs and the like. A portion of the chassis assembly is cut-away to show a portion of the topsheet material 138 and anabsorbent assembly 140. - After the continuous web of
absorbent chassis 102 are cut by theknife roll 514, thecarrier apparatus 512 rotates and advances thediscrete chassis 102 in the machine direction MD in the orientation shown in FIG. 5E1, wherein thelongitudinal axis 124 of thechassis 102 is rotated from generally parallel with the machine direction MD to a position that is generally perpendicular to the machine direction. While thechassis 102 shown in FIG. 5E1 is shown with the second laterally extendingend edge 146 as a leading edge and the first laterally extendingend edge 144 as the trailing edge, it is to be appreciated that in other embodiments, thechassis 102 may be advanced in other orientations. For example, the chassis may be oriented such that the second laterally extendingend edge 146 is a trailing edge and the first laterally extendingend edge 144 is a leading edge. The carrier apparatus 308 also rotates while at the same time changing the orientation of the advancingchassis 102. The carrier apparatus 308 may also change the speed at which thechassis 102 advances in the machine direction MD. It is to be appreciated that various forms of carrier apparatuses may be used with the methods herein, such as for example, the carrier apparatuses disclosed in U.S. Pat. No. 7,587,966. FIG. 5E2 shows an orientation of thechassis 102 on the carrier apparatus 308 while advancing in the machine direction that is different from that depicted in FIG. 5E1. More particularly, FIG. 5E2 shows thechassis 102 with thelateral axis 126 of thechassis 102 generally parallel with the machine direction MD, and wherein the firstlongitudinal side edge 128 is the leading edge and the secondlongitudinal side edge 130 is the trailing edge. - As discussed below with reference to
FIGS. 4 , 5F, 5G, and 5H, thechassis 102 are transferred from thecarrier apparatus 512 and combined with advancing, continuous lengths ofbelt substrates elastic belts diapers 100. - With reference to
FIGS. 4 and 5F , thechassis 102 are transferred from thecarrier apparatus 512 to a nip 516 between thecarrier apparatus 512 and aroll 518 where thechassis 102 are combined with continuous lengths of advancingfront belt 406 substrate material and backbelt substrate material 408. The frontbelt substrate material 406 and the backbelt substrate material 408 each define awearer facing surface 312 and an opposinggarment facing surface 314. Thewearer facing surface 312 of thefirst belt substrate 406 may be combined with the garment facing surface 134 of thechassis 102 along thefirst waist region 116, and thewearer facing surface 312 of thesecond belt substrate 408 may be combined with the garment facing surface 134 of thechassis 102 along thesecond waist region 118. As shown inFIG. 4 , adhesive 520 may be intermittently applied to thewearer facing surface 312 of the first andsecond belt substrates discrete chassis 102 at thenip 516 betweenroll 518 and thecarrier apparatus 512. In some embodiments, thechassis 102 may be joined to the first and second belts in various different ways, such as for example, thermal bonds, pressure bonds, ultrasonic bonds, adhesives and combinations thereof In some embodiments, such as shown inFIGS. 4 , 5C, 5C1, 5C2, and 5F, adhesive 520 may be intermittently applied to portions of thebody facing surface 312 at thenon-bonded regions 403 of thefirst belt substrate 406 and/or thesecond belt substrate 408. And adhesive may not be applied to portions of thebody facing surface 312 at the bondedregions 405 of thefirst belt substrate 406 and/or thesecond belt substrate 408. As such, the garment facing surface 134 of thechassis 102 may be combined in an overlapping relationship with thenon-bonded regions 403 of thefirst belt substrate 406 and/or thesecond belt substrate 408. As such, in some embodiments, thenon-bonded regions 403 of the first andsecond belt substrates central regions elastic belts FIGS. 1-2B . In addition, the bondedregions 405 may correspond with and/or define the opposingend regions elastic belts FIGS. 1-2B . - With reference to
FIGS. 4 and 5F , a continuous length ofabsorbent articles 400 are defined by multiplediscrete chassis 102 spaced from each other along the machine direction MD and connected with each other by thesecond belt substrate 408 and thefirst belt substrate 406. As shown inFIG. 4 , the continuous length ofabsorbent articles 400 advances from thenip 516 to afolding apparatus 522. At thefolding apparatus 522, eachchassis 102 is folded in the cross direction CD along alateral axis 126 to place thefirst waist region 116, and specifically, the inner, body facing surface 132 into a facing, surface to surface orientation with the inner, body surface 132 of thesecond waist region 118. The folding of the chassis also positions thewearer facing surface 312 of thesecond belt substrate 408 extending between eachchassis 102 in a facing relationship with thewearer facing surface 312 of thefirst belt substrate 406 extending between eachchassis 102. As shown inFIGS. 4 , 5F, and 5G, the foldeddiscrete chassis 102 connected with the first andsecond belt substrates folding apparatus 522 to abonder 524. Thebonder 524 operates to bond a portion of thesecond belt substrate 408 extending between eachchassis 102 with a portion of thefirst belt substrate 406 extending between eachchassis 102, thus creatingdiscrete bond regions 336. It is to be appreciated that various types of bonder apparatuses and methods can be used to bond the secondbelt substrate material 408 with the firstbelt substrate material 406, such as for example disclosed in U.S. Pat. Nos. 6,248,195; 6,546,987; and 7,383,865, as well as U.S. Patent Publication No. 2012/0021186A1, which are incorporated by reference herein. - As shown in
FIGS. 4 and 5H , a continuous length of absorbent articles are advanced from thebonder 524 to aknife roll 526 where thediscrete bond regions 336 are cut along the cross direction to create afirst side seam 178 on anabsorbent article 100 and asecond side seam 180 on a subsequently advancing absorbent article. - The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as “40 mm” is intended to mean “about 40 mm.”
- Every document cited herein, including any cross referenced or related patent or application, is hereby incorporated herein by reference in its entirety unless expressly excluded or otherwise limited. The citation of any document is not an admission that it is prior art with respect to any invention disclosed or claimed herein or that it alone, or in any combination with any other reference or references, teaches, suggests or discloses any such invention. Further, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall govern.
- While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
Claims (17)
1. A method for assembling disposable pant diapers, each pant diaper comprising a chassis having a first end region and an opposing second end region separated from each other by a central region, and having a longitudinal axis and a lateral axis, the chassis comprising: a topsheet, a backsheet, and an absorbent core disposed between the topsheet and the backsheet, the method comprising the steps of:
advancing a first continuous substrate layer having a first surface and an opposing second surface in a machine direction, and defining a width in a cross direction;
advancing a second continuous substrate layer having a first surface and an opposing second surface in a machine direction, and defining a width in a cross direction;
advancing elastic strands in the machine direction in a stretched state;
intermittently bonding the elastic strands in the stretched state between the first surface of the first substrate layer and the first surface of the second substrate layer to form an elastic laminate, the elastic laminate including bonded regions and non-bonded regions intermittently spaced along the machine direction, wherein the elastic strands are bonded to the first surface of the first substrate layer and the first surface of the second substrate layer in the bonded regions, and wherein the elastic strands are not bonded to the first surface of the first substrate layer and the first surface of the second substrate layer in the non-bonded regions;
cutting the elastic laminate along the machine direction to form a first continuous elastic laminate and a second continuous elastic laminate, each of the first continuous elastic laminate and the second continuous elastic laminate including bonded regions and non-bonded regions;
separating the first continuous elastic laminate and the second elastic laminate in the cross direction;
severing elastic strands in the non-bonded regions of the first continuous elastic laminate and the second elastic laminate; and
bonding the first end regions of each chassis with non-bonded regions of first continuous elastic laminate, and bonding the second end regions of each chassis with non-bonded regions of the second. continuous elastic laminate.
2. The method of claim 1 , wherein the step of severing the elastic strands further comprises applying pressure to the first substrate layer, the second substrate layer, and the elastic strands with a distal edge of a blade, and further comprising the step of creating a bond between the first substrate layer and the second substrate layer with the distal edge of the blade,
3. The method of claim 1 , wherein the step of severing the elastic strands further comprises cutting the elastic strands and the first continuous substrate layer in the non--bonded regions without cutting the second continuous substrate layer.
4. The method of claim 1 , wherein the step of severing the elastic strands further comprises cutting the elastic strands in the non-bonded regions without cutting either the first continuous substrate layer or the second continuous substrate layer.
5. The method of claim 1 , wherein the step of severing the elastic strands further comprises cutting the elastic strands and both the first continuous substrate layer and the second continuous substrate layer in the non-bonded regions.
6. The method of claim 1 , further comprising the steps of:
advancing a third continuous substrate in the machine direction;
cutting the third continuous substrate into discrete chassis, wherein each chassis advances such that the longitudinal axis is parallel with the machine direction; and
turning each chassis such that the lateral axis is parallel with the machine direction.
7. The method of claim 6 , further comprising the steps of:
folding each chassis along the lateral axis to position the first continuous elastic laminate into a facing relationship with the second continuous elastic laminate;
bonding the first continuous elastic laminate with the second continuous elastic laminate at discrete bond regions; and
cutting the first and second continuous elastic laminates to form pant diaper side seams.
8. The method of claim 1 , wherein the first end region is a front waist region.
9. The method of claim 1 , wherein the second end region is a back waist region,
10. A method for assembling disposable pant diapers, each pant diaper comprising a chassis haying a first end region and an opposing second end region separated from each other by a central region, and having a longitudinal axis and a lateral axis, the chassis comprising: a topsheet, a backsheet, and an absorbent core disposed between the topsheet and the backsheet. the method comprising the steps of:
advancing a first continuous substrate layer having a first surface and an opposing second surface in a machine direction, and defining a width in a cross direction;
advancing a second continuous substrate layer having a first surface and an opposing second surface in a machine direction, and defining a width in a cross direction;
advancing elastic strands in the machine direction in a stretched state;
intermittently bonding the elastic strands in the stretched state between the first surface of the first substrate layer and the first surface of the second substrate layer to form a continuous elastic laminate, the continuous elastic laminate including bonded regions and non-bonded regions intermittently spaced along the machine direction, wherein the elastic strands are bonded to the first surface of the first substrate layer and the first surface of the second substrate layer in the bonded regions, and wherein the elastic strands are not bonded to the first surface of the first substrate layer and the first surface of the second substrate layer in the non-bonded regions;
positioning a distal edge of a blade in contact with the continuous elastic laminate with a length of the distal edge of the blade extending across all the elastic strands in the non-bonded region;
simultaneously severing all elastic strands in the non-bonded regions of the continuous elastic laminate by applying pressure to the first substrate layer, the second substrate layer, and the elastic strands with the distal edge of the blade;
bonding the first substrate layer and the second substrate layer together with the distal edge of the blade; and
positioning the first end region of each chassis with non-bonded regions of continuous elastic laminate,
11. The method of claim 10 , wherein the step of severing the elastic strands further comprises cutting the elastic strands and the first continuous substrate layer in the non-bonded regions without cutting the second continuous substrate.
12. The method of claim 10 , wherein the step of severing the elastic strands further comprises cutting the elastic strands in the non-bonded regions without cutting either the first continuous substrate layer or the second continuous substrate layer.
13. The method of claim 10 , wherein the step of severing the elastic strands farther comprises cutting the elastic strands and both the first continuous substrate layer and. the second continuous substrate layer in the non-bonded regions.
14. The method of claim 10 , further comprising the steps of:
advancing a third continuous substrate in the machine direction;
cutting the third continuous substrate into discrete chassis, wherein each chassis advances such that the longitudinal axis is parallel with the machine direction; and
turning each chassis such that the lateral axis is parallel with the machine direction.
15. The method of claim 10 , wherein the first end region is a front waist region.
16. The method of claim 1 , further comprising the steps of:
continuously applying adhesive to at least one of the elastics, the first surface of the first substrate layer, and the first surface of the second substrate layer in the bonded regions; and
applying adhesive in strips extending in the machine direction to the first surface of the first substrate layer and the first surface of the second substrate layer in the non-bonded regions, wherein the strips are positioned between elastics in the non-bonded regions.
17. The method of claim 10 , further comprising the steps of:
continuously applying adhesive to at least one of the elastics, the first surface of the first substrate layer, and the first surface of the second substrate layer in the bonded regions; and
applying adhesive in strips extending in the machine direction to the first surface of the first substrate layer and the first surface of the second substrate layer in the non-bonded regions, wherein the strips are positioned between elastics in the non-bonded regions.
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EP13713054.8A EP2830556B1 (en) | 2012-03-30 | 2013-03-18 | Method for making absorbent articles |
PCT/US2013/032735 WO2013148378A1 (en) | 2012-03-30 | 2013-03-18 | Apparatuses and methods for making absorbent articles |
CN201380017452.4A CN104363866A (en) | 2012-03-30 | 2013-03-18 | Apparatuses and methods for making absorbent articles |
JP2015501827A JP6320988B2 (en) | 2012-03-30 | 2013-03-18 | Apparatus and method for making absorbent articles |
IN7175DEN2014 IN2014DN07175A (en) | 2012-03-30 | 2014-08-26 | |
US15/354,031 US10736791B2 (en) | 2012-03-30 | 2016-11-17 | Apparatuses and methods for making absorbent articles |
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US13/434,984 US20130255861A1 (en) | 2012-03-30 | 2012-03-30 | Apparatuses and Methods for Making Absorbent Articles |
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EP (1) | EP2830556B1 (en) |
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WO2024006719A1 (en) | 2022-06-30 | 2024-01-04 | The Procter & Gamble Company | Absorbent articles with frangible pathways and concealed disposal fastener components |
WO2024006717A1 (en) | 2022-06-30 | 2024-01-04 | The Procter & Gamble Company | Absorbent articles with absorbent chassis and belt elastic arrangements and frangible pathways |
WO2024006727A1 (en) | 2022-06-30 | 2024-01-04 | The Procter & Gamble Company | Absorbent articles with frangible pathways having tear zones |
WO2024006720A1 (en) | 2022-06-30 | 2024-01-04 | The Procter & Gamble Company | Absorbent articles with frangible pathways and disposal features |
Also Published As
Publication number | Publication date |
---|---|
IN2014DN07175A (en) | 2015-04-24 |
EP2830556A1 (en) | 2015-02-04 |
CN104363866A (en) | 2015-02-18 |
WO2013148378A1 (en) | 2013-10-03 |
EP2830556B1 (en) | 2024-04-17 |
CA2882103A1 (en) | 2013-10-03 |
JP2015510831A (en) | 2015-04-13 |
JP6320988B2 (en) | 2018-05-09 |
US10736791B2 (en) | 2020-08-11 |
US20170065461A1 (en) | 2017-03-09 |
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Owner name: PROCTER & GAMBLE COMPANY, THE, OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SCHNEIDER, UWE;REEL/FRAME:028047/0388 Effective date: 20120329 |
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