WO2010104429A1 - Article absorbant comprenant un stratifié élastique et son procédé de fabrication - Google Patents

Article absorbant comprenant un stratifié élastique et son procédé de fabrication Download PDF

Info

Publication number
WO2010104429A1
WO2010104429A1 PCT/SE2009/050251 SE2009050251W WO2010104429A1 WO 2010104429 A1 WO2010104429 A1 WO 2010104429A1 SE 2009050251 W SE2009050251 W SE 2009050251W WO 2010104429 A1 WO2010104429 A1 WO 2010104429A1
Authority
WO
WIPO (PCT)
Prior art keywords
elastic
laminate
film
absorbent article
stretching
Prior art date
Application number
PCT/SE2009/050251
Other languages
English (en)
Inventor
Inge Gabrielii
Mats Kinderdal
Elisabeth Lakso
Original Assignee
Sca Hygiene Products Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sca Hygiene Products Ab filed Critical Sca Hygiene Products Ab
Priority to PCT/SE2009/050251 priority Critical patent/WO2010104429A1/fr
Publication of WO2010104429A1 publication Critical patent/WO2010104429A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/144—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers using layers with different mechanical or chemical conditions or properties, e.g. layers with different thermal shrinkage, layers under tension during bonding
    • 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
    • A61F13/15804—Plant, e.g. involving several steps
    • 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
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49011—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region
    • A61F13/49012—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region the elastic means being elastic panels
    • 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
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/08—Animal fibres, e.g. hair, wool, silk
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/12—Conjugate fibres, e.g. core/sheath or side-by-side
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/14—Mixture of at least two fibres made of different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2274/00—Thermoplastic elastomer material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/10—Fibres of continuous length
    • B32B2305/20—Fibres of continuous length in the form of a non-woven mat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/51—Elastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2555/00—Personal care
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2555/00—Personal care
    • B32B2555/02—Diapers or napkins

Definitions

  • An absorbent article comprising an elastic laminate and a method for manufacturing thereof
  • the present invention refers to a personal care absorbent article comprising an elastic laminate, said laminate comprises at least one elastic thermoplastic polymeric film laminated to at least one fibrous layer.
  • the invention further refers a method for producing the absorbent article.
  • Elastic nonwoven laminates are often used in disposable absorbent articles such as diapers, adult incontinence products, sanitary napkins and the like. Elastic films are difficult to handle and have undesirable tactile and strength properties. It is known to laminate nonwoven materials to elastic films. The nonwoven material strengthens the elastic film and provides a soft and non-tacky feel. The problem is that with attached nonwovens the nonwoven elastic film laminate has often little or no elastic properties. Numerous patents have addressed this problem. Many solutions are directed at ways to "activate" the elastic nonwoven laminate, which generally involves weakening the nonwoven in the direction of desired elasticity, generally by stretching.
  • An elastic nonwoven laminate is formed and then placed under tension by a variety of techniques and stretched, see e.g., US patents 4,834,741 and 7,039,990. The stretching weakens the attached nonwoven allowing the underlying elastic to more freely stretch and recover.
  • US patent 6,476,978 discloses necking of a nonwoven web by continuously drawing the web through a web heating mean, wherein the web is subjected to tension to narrow its lateral dimensions and to increase its length.
  • the web can be laminated to an elastomeric film.
  • WO 98/16380 discloses a cross-direction extensible elastic laminate produced by laminating at least one fibrous layer to at least one elastic layer and subsequently necking and heating the laminate.
  • US patent 5,789,065 discloses extrusion laminating a thermoplastic elastomeric film between two sheets of nonwoven using a closed nip, followed by necking the laminate while it is at an elevated temperature.
  • One object of the present invention is to provide a personal care absorbent article comprising an elastic laminate comprising at least one elastic polymeric film laminated to at least one fibrous layer, said article having features like comfort and strength.
  • the elastic laminate is contained in any of the following components of the absorbent article: in elastic side tabs or ears, in belts or part of belts, in elastic side panels and/or in front and back body panels.
  • the absorbent article is selected from the group consisting of: a diaper, a pant diaper, an adult incontinence article and a feminine hygiene article.
  • laminate has a basis weight between 40 and 180 g/m 2 .
  • a further object of the invention is to provide a process for manufacturing a personal care absorbent article comprising an elastic laminate
  • the process should be adapted for in line lamination of an elastic laminate which is elastic in the machine direction and in a still further aspect to incorporate the laminate in an absorbent pant production line in which the pant articles are arranged side-by-side - so called cross production
  • a still further object is to provide a cost efficient method for producing absorbent articles comprising elastic chassis portions, such as body panels, side panels and the like, fulfilling demands of strength of the laminate as well as sufficient elasticity
  • the invention suggests a method for manufacturing a personal care absorbent article comprising an elastic laminate, said laminate comprising at least one elastic thermoplastic polymeric film laminated to at least one fibrous layer, said method comprising providing said elastic film, heating and stretching the heated elastic film in at least one direction so that the elastic film during stretching has a temperature of at least 4O 0 C, wherein stretching is performed so as to extend the dimension of the film in the stretching direction between 100 and 500% of its original dimension, laminating said fibrous layer to the elastic film while this is in its stretched condition and subsequently incorporating the laminate in an absorbent article keeping the laminate either in a stretched or in a relaxed condition
  • the heated film is stretched to extend its dimension in the stretching direction between 200 and 500% of its original dimension
  • the elastic film after relaxation of the laminate recovers not more than 80% of its elongation
  • the elastic film after relaxation of the laminate recovers at least 30% and preferably at least 50% of its elongation
  • the elastic film is stretched so as to have a basis weight after relaxation of between 12 and 30 g/m 2 .
  • the film during stretching has a temperature of at least 45 0 C.
  • the film during stretching has a temperature which is at least 10 0 C below the melting temperature or the glass transition temperature of the hard blocks of the polymeric material of said elastic film.
  • the lamination is achieved by a bonding process selected from adhesive, thermal and ultrasonic bonding.
  • the elastic film is stretched in two or more successive steps.
  • Fig. 1 shows a perspective view of an absorbent article in the form of a pant diaper.
  • Fig. 2 is a schematic view of an apparatus for making an elastic laminate according to the invention.
  • Fig. 3 is a schematic representation of a method for producing a pant-type absorbent article comprising the elastic laminate.
  • Fig. 4 is a graph showing the inflection point in stretch-strain curve vs. temperature of the elastic laminate when the elastic film has been heated to different temperatures.
  • Amount of "stretching" of a material as used herein is defined as a percentage of the initial non-stretched extension of the material in the direction of stretch.
  • a laminate having a first non-stretched length of 1 m and being stretched by 50% has a stretched length of 1.5 m.
  • the term "elastic” as used herein defines a material having a permanent elongation after relaxation of less than 10% after the material has been subjected to an elongation of 30% in the Elasticity test described. An elongation of 30% means an elongation to a length 30% longer than the initial length of the sample.
  • the term "fibrous layer” refers to a web material in the form of a sheet of fibres, continuous filaments, or chopped yams of any nature or origin, that have been formed into a layer by any means. Examples of fibrous layers are nonwoven materials in which the fibers or continuous filaments are bonded together by any means, with the exception of weaving or knitting, to form a web. Other examples of fibrous layers that may be used are knits or loosely woven fabrics.
  • the invention refers to a personal care absorbent article comprising a laminated structure in which at least one elastic polymeric film is laminated to at least one fibrous layer, especially at least one nonwoven layer.
  • absorbent article refers to products that are placed against the skin of the wearer to absorb and contain body exudates, like urine, faeces and menstrual fluid.
  • the invention mainly refers to disposable absorbent articles, which means articles that are not intended to be laundered or otherwise restored or reused as an absorbent article after use.
  • the most important type of absorbent articles of this type are diapers, pant diapers, adult incontinence articles and feminine hygiene articles.
  • Fig. 1 shows an embodiment of a pant diaper 1 for an infant or an incontinent adult.
  • the pant diaper shown in Fig. 1 comprises an absorbent core 2 located in a core region 3 of the article, and a chassis 4 surrounding the core region.
  • the chassis comprises a front panel 5, a back panel 6 and an elastic waist band 7.
  • the article has a longitudinal direction y and a transverse direction x.
  • the entire or part of the front and/or back panels 5 and 6 may be of an elastic laminate.
  • a pant diaper of this type is disclosed in for example WO 2006/093440.
  • FIG. 2 shows schematically an apparatus 10 for making an elastic laminate according to the invention .
  • a film 1 1 of elastic material is either formed in situ or made previously and unwound from a supply roll (not shown).
  • the film 11 is preferably formed by extruding an elastomeric thermoplastic polymer through a die (not shown).
  • thermoplastic elstomers are a class of copolymers or a physical mix of polymers (usually a plastic and a rubber) which consist of materials with both thermoplastic and elastomeric properties.
  • the principal difference between thermoset elastomers and thermoplastic elastomers is the type of crosslinking bond in their structures.
  • crosslinking is a critical structural factor which contributes to impart high elastic properties.
  • the crosslink in thermoset polymers is a covalent bond created during the vulcanization process.
  • the crosslink in thermoplastic elastomer polymers is a weaker dipole or hydrogen bond or takes place in only in one of the phases of the material. This phase is often referred to as the "hard blocks” and has a melting temperature (Tm) or glass transition temperature (Tg) higher than the other phase, the "soft blocks”.
  • the material is elastic as long as the temperature is between the Tg (glass transition temperature) of the "soft blocks” and the Tg or Tm (melting point) of the "hard blocks". At temperatures above the Tg or Tm of the "hard blocks", the material will be in the form of a melt.
  • TPEs There are six generic classes of TPEs generally considered to exist commercially. These are styrenic block copolymers, polyolefin blends, elastomeric alloys, thermoplastic polyurethanes, thermoplastic copolyester and thermoplastic polyamides. Examples of TPE products that come from block copolymers group are StyroflexTM (BASF), KratonTM (Shell chemicals), PellethaneTM, (Dow Chemicals), PebaxTM, ArnitelTM (DSM), HytrelTM (Du Pont) and more. While there are three main commercial products of elastomer alloy: SantopreneTM (Monsanto), GeolastTM (Monsanto) and AlcrynTM (Du Pont). Examples of polyolefin elastomers are VersifyTM and AffinityTM (Dow Chemicals).
  • thermoplastic elastomer In order to qualify as a thermoplastic elastomer, a material must have these three essential characteristics:
  • the film may be monolayer film or a multilayer film, for example a film having having at least one core layer and outer skin layers.
  • the film may further be breathable, for example by being apertured.
  • a breathable film preferably has a Water Vapour Transmission Rate according to ASTM E96-00 Procedure D of at least 1500 g/m 2 24h, more preferably at least 3000 g/m 2 24h.
  • the film is non-breathable.
  • the film Before heating and stretching, the film has a basis weight of 20-80 g/m 2 , preferably 20-50 and more preferably 30-50 g/m 2 ,
  • the film 1 1 is stretched in a stretching device 12, which for example comprises a pair of rolls over which the film is led and that are driven at different speeds so as to cause the film to be stretched in the feeding direction.
  • a stretching device 12 which for example comprises a pair of rolls over which the film is led and that are driven at different speeds so as to cause the film to be stretched in the feeding direction.
  • the way of stretching the film is not critical and other devices for stretching the film in either the feeding or cross-feeding direction may be used.
  • the film is heated before stretching, for example by heated rolls 13, arranged before the stretching device 12, and/or simultaneously with the stretching process by suitable heating means 14. If the film is heated during stretching, pre-heating may be eliminated, and if preheating is used, heating during stretching can be eliminated. In an alternative embodiment both pre-heating and heating during the stretching process are used.
  • Heating and stretching means may be the same, for example heated rolls. Other methods for heating the film are by hot air, radiation etc.
  • the film 11 should be heated so that its temperature during stretching is at least 40 ° C, preferably at least 45 ° C,
  • the heating temperature should of course not be higher than ensuring that the film integrity is maintained during the process, which means a temperature at least 10 ° C below the melting temperature or the glass transition temperature respectively of the hard blocks of the polymeric material of the elastic film.
  • Polymers have a melting point or a glass transition temperature depending on their degree of crystallinity.
  • the elasticity of a polymeric material is derived from the ability of the polymer chains to reconfigure themselves to distribute the applied stress. Upon release of the applied stress the polymeric chains seek their relaxed network structure. However, if the applied force is applied under a prolonged time or if the temperature makes the polymers able to move in relation -to each other, the network may not go all the way back to the original configuration. The result is a permanent set/elongation.
  • the film is stretched to such an extent that its dimension in the stretching direction is increased between 100 and 500%, preferably between 200 and 500%, of its original dimension.
  • the extent of stretching can be determined by the basis weight reduction obtained.
  • the elastic film will loose some of its elasticity upon this stretching process and thus be permanently deformed to a certain extent. However it will maintain some of its original elasticity, which is sufficient for the intended use of the laminate.
  • the purpose is to achieve at least 20%, preferably at least 30% and more preferably at least 40% permanent elongation by heating, so that the film does not fully retract upon relaxation.
  • the permanent elongation is determined by the Elasticity test described below.
  • the stretching may take place in two or more successive steps, which may be more kind to the film, especially at high degrees of stretching.
  • the film While kept in said stretched condition the film is laminated to at least one fibrous layer, preferably a nonwoven material.
  • a nonwoven material preferably a nonwoven material.
  • two nonwoven materials 15 and 16 are laminated to the film 1 1 in a lamination station 17.
  • suitable nonwoven materials are spunbond materials, meltblown materials and carded webs.
  • the basis weight of the fibrous material layers can vary depending on the intended use of the laminate. For use in personal care absorbent articles the basis weight of the nonwoven material is typically between 10 and 35 g/m 2 .
  • suitable polymers used in the fibrous materials are polyethylene, polypropylene and other polyolefin homopolymers and copolymers, polyesters etc. Natural fibres, for example cotton, may also be used as long as they provide the required properties. A mixture of polymers can contribute to a higher flexibility of the nonwoven layer, and through this, give the nonwoven material a higher elongation at maximum load. A mixture of polyethylene and polypropylene polymers has proved to provide good results in this respect. A mixture of fibers of different polymers is also possible. Conjugate fibers may also be used, in which two or more polymers are arranged in positioned distinct zones across the cross-section of the conjugate fibers. Conjugate fibers are also referred to a bicomponent or multicomponent fibers.
  • Lamination of the nonwoven layers 15 and 16 to the stretched elastic film can be made in conventional way by adhesive bonding, thermal bonding and/or ultrasonic welding or other suitable technique.
  • the laminate is designated with the numeral 18.
  • the stretched film After relaxation of the laminate 18 the stretched film will recover at least to some extent.
  • the term "recover” refers to a contraction of a stretched material upon release of a stretching force. The degree of recovery can vary, but preferably the film will recover at least 30% of its elongation. This means that in the case the film has been stretched 100% to a stretched length that is 200% of the original length, the film should recover to a length that is not more than 170% of its original length before stretching.
  • the elastic film will recover at least 50% of its elongation after relaxation.
  • the nonwoven layers 15 and 17 laminated to the film 1 1 will contract together with the film and gather, thus allowing the laminate 18 to be stretched at least to a degree up to the original dimension of the nonwoven materials 15 and 16.
  • the thickness of the film Due to the permanent elongation of the film referred to above the thickness of the film is reduced. It is often an advantage to be able to reduce the thickness of the elastic film since elastic films are expensive and a thickness reduction means savings in material and cost. It may also result in a higher comfort, since a reduced thickness results in a more pliable laminate.
  • An advantage of stretching the film while heated is that the permanent deformation of the film is increased as compared to stretching without heating, thus resulting in a higher reduction of the film thickness.
  • the basis weight of the elastic film is typically between 12 and 30 g/m 2 .
  • the basis weight of the laminate is typically between 40 and 180 g/m 2 .
  • the temperature to which the elastic film is heated, and the degree of stretching are tools to control the permanent elongation of the elastic film.
  • a higher temperature will result in a higher degree of permanent elongation and so will a higher degree of stretching. It is therefore possible to control the permanent elongation and thus the elasticity of the laminate by controlling one or both of these parameters.
  • Thin elastic films and thin elastic laminates are advantageous both for cost saving reasons and for comfort reasons.
  • the elastic laminate produced according to the invention has an elasticity in at least one direction of at least 30% when measured according to the Elasticity test specified below.
  • the elastic laminate according to the invention comprises at least one elastic film layer and at least one fibrous layer laminated thereto. It may further comprise two fibrous layers laminated to the opposite sides of the film layer and it may comprise additional elastic film layers and fibrous layers.
  • the laminate comprises two or more elastic films, at least one or all elastic films are heated and stretched according to the method described.
  • Fig. 3 shows schematically a method for producing pant-type absorbent articles of the type shown in Fig. 1.
  • the process in Fig. 3 is preferably a direct in-line continuation of the stretching and lamination process shown in Fig. 2.
  • a chassis structure is formed that is intended to carry an absorbent core component.
  • a core component is formed separately as a "core pack", with an absorbent core 3 enclosed between a topsheet and a liquid impermeable backsheet.
  • parts of the chassis structure are utilized as topsheet and/or backsheet.
  • a multiple chassis structure is formed from a compound chassis web 20, first and second elastic laminate webs 18a, b and a first and second waist features 21 , 22.
  • the elastic laminate webs 18a, b are of the elastic laminate 18 produced in the process of Fig. 2.
  • the elastic laminate produces in the process is kept in a stretched condition.
  • the laminate Before joining the elastic laminate webs 18a, b to the central nonwoven chassis web 20 the laminate can be passed through a relaxation zone 19 where they are partially relaxed in the machine direction (MD) by at least 4% the reduce the effect of edges to curl.
  • MD machine direction
  • the laminate is preferably kept in a stretched condition including some minor relaxation for processability.
  • Waist features 21 , 22 are formed by joining separate nonwoven strips 23, 24 to the outer edges of the stretched elastic laminate webs 18a, b, attaching elongated elastic elements 25, such as elastic threads, to the nonwoven strips 23, 24 and folding and securing the nonwoven strips 23, 24 over the elastic elements 25 to create elastic waistbands along the edges of the compound chassis web 20.
  • the elastic waist portions may alternatively be formed by folding one edge of one or both of the elastic laminate webs 18a, b.
  • the folded web will have greater elastic force than a non-folded web.
  • the folded laminate web may be supplemented with additional elastic elements. It is also possible to create a waist feature at the edge of one or both of the elastic laminate webs 18a, b by attaching elastic elements to the web and optionally covering the elastic elements with a separate nonwoven.
  • a core component 26 is produced separately from the pant-forming process and is laid down on the compound chassis web 22.
  • the core component 26 comprises an absorbent core 3 arranged between a liquid barrier layer or backsheet 27 and a liquid pervious topsheet layer 28.
  • leg elastics may be applied by any known manner and using any known elastic elements.
  • the stretched elastic laminate webs 18a, b are joined to the central nonwoven chassis web 20.
  • the process may alternatively involve feeding an elastic web 18 as shown in Fig. 2 and subsequently cutting the web into two web halves 18a and b.
  • a portion 30 is cut out from the compound web 22 between the core components 26 to create leg openings 31 .
  • the compound chassis web and the integrated core components 26 are then folded centrally and the web halves are joined in side seams 32 between the core components 26.
  • individual pant diapers 21 are cut from the production web.
  • the core components 26 may of course alternatively be joined to the chassis web after the leg cut-outs 31 have been made.
  • the webs can be joined to other components by thermo-bonding and ultrasonic welding techniques.
  • thermo-bonding and ultrasonic welding techniques it may be beneficial if at least one of the fibrous layers in a three- layer nonwove-film-nonwoven laminate 18 is substantially or completely made of thermoplastic fibers.
  • the nonwoven layers can then be used to form side seams with good tensile strength.
  • Fig. 3 is a highly schematic representation of a method for producing an absorbent article. However all individual steps not closer described, such as cutting, bonding, folding etc. are well known to a person skilled in the art.
  • the absorbent article shown in Fig. 1 and the method for producing such an article as illustrated in Fig. 3, in which the front and back body panels of a pant-type absorbent article are made of the elastic laminate, are only non-limiting examples of an article and of a method for its production.
  • the elastic laminate 18 may form part of any optional type of absorbent article, as previously mentioned, and be incorporated as any optional elastic component in such an article, for example in elastic side tabs or ears, in belts or part of belts, in elastic side panels and/or in parts of front and back body panels.
  • the elastic laminate is passed through a relaxation zone 19 allowing the elastic laminate to partly relax before it is combined with the other components of the chassis.
  • the relaxation zone may be eliminated and the laminate is incorporated in the article in the stretched condition it had during lamination.
  • the laminate may alternatively be more or less fully relaxed when joined to other components of the absorbent article, Description of test methods
  • Elasticity test The method measures how an elastic material behaves at repeated load and unload cycles. The sample is stretched to a predetermined elongation and a cyclic movement between 0 and said predetermined elongation is performed. Desired load and unload forces are recorded. The permanent, i.e. remaining, elongation of the relaxed material is measured.
  • a suitable tensile tester such as Lloyd LRX, able to perform cyclic movements and equipped with a printer/plotter or software presentation is used.
  • the sample is prepared by cutting it to a width of 25.4 mm and a length that is preferably 20 mm longer than the distance between the clamps in the tensile tester.
  • Condition sample at a temperature of 23°C ⁇ 1°C and 50% RH ⁇ 5%RH before testing.
  • the tensile tester is calibrated according to the apparatus instructions.
  • the parameters needed for the test (load and unload forces) are adjusted to:
  • the sample is placed in the clamps according to the markings made for the clamps and it is made sure that the sample is centred and fastened perpendicularly in the clamps.
  • the tensile tester is started and three cycles between 0 and the predetermined elongation are performed. There is no pause between the first and second cycle. Before the last cycle, the sample is relaxed for 1 minute, then the permanent elongation is measured by stretching the sample until a force of 0.1 N is detected and the elongation is read.
  • the term elastic is used herein to define a material having a permanent elongation after relaxation of less than 10% after the material has been subjected to an elongation of 30% in the test above.
  • An elongation of 30% means an elongation to a length that is 30% longer than the initial length of the sample.
  • the method is meant for determination of the tensile strength and elongation of elastic films and laminates.
  • Tensile strength and elongation of a well-defined test piece is tested by means of a suitable tensile tester, for example Lloyd LRX.,
  • Crosshead speed A 500 mm/m Clamp distance: A 50 mm Sample cutter or cutter tool, accuracy: ⁇ 0.1 mm Silicone paper.
  • the distance between the clamps should be adapted to the available material length and the test is performed in the same manner as stated above.
  • the method can also be performed in the same manner, however a recalculation of the test result has to be made to correspond to a width of 25.4 mm.
  • the width of the sample shall be 25.4 mm and the length 50 mm longer than the clamp distance if possible. Check that the cutter blade is undamaged. It is of importance that the edges of the sample are even and without break notches. Cut samples in the direction of elasticity. Condition samples at least 4h in 50% RH ⁇ 5% RH and 23 0 C ⁇ 1 0 C before testing.
  • the tensile strength is defined as maximum force in N/25.4mm. State the accuracy of the results by 1 decimal for forces and round off to the nearest ten for elongation.
  • the test is a specified version of the ASTM D 882 test.
  • An elastic laminate was produced comprising an inner layer of an elastic film and a pair of outer nonwoven layers.
  • the film was a 30 g/m 2 multilayer elastic film form Pliant Corp. having a styrene based core layer and polyolefin skin layers.
  • the nonwoven layers were spunbond nonwovens and each had a basis weight of 17 g/m 2 .
  • the film was heated and stretched 3.7 times its original length and laminated to the two nowoven materials by ultrasonic welding. Heating was in one test made with an IR heating lamp with the power 2000W and with the distance 0.3 m and the film was heated stepwise. In other tests heating was made by heating a roll over which the film was passed. The roll was heated by the IR lamp. The test was made in the temperature interval 23 to 8O 0 C.
  • Fig. 4 illustrates the available stretch, the so called inflection point in stretch-strain curve, of the laminate, wherein the film has been heated to different temperatures and stretched.
  • the inflection point in stretch-strain curve is achieved by the Tensile strength test referred to above and is defined as the percent elongation of the laminate when the slope of the stretch-strain curve increases above 0.4N/% per 25.4mm. As is seen from Fig. 4 the inflection point in stretch-strain curve starts to be reduced around the heating temperature 4O 0 C. Table 1 below shows the inflection point in stretch-strain curve, the force at 80% and 100% elongation, maximum force and break elongation for the laminate in the MD of the laminate.

Abstract

Selon l'invention, dans un article absorbant d'hygiène personnelle comprenant un stratifié élastique, ledit stratifié comprend au moins un film polymère thermoplastique élastique stratifié sur au moins une couche fibreuse, les couches fibreuses stratifiées sur le film étant dans une condition étirée, de telle sorte que les couches fibreuses sont rassemblées. Le film élastique a un poids de base compris entre 12 et 30 g/m2, et le stratifié a une résistance à la traction d'au moins 5N/25,4 mm, de préférence 10N/25,4 mm dans le sens machine du stratifié. L'invention porte en outre sur un procédé de fabrication de l'article absorbant, ledit procédé consistant à : se procurer ledit film élastique, chauffer et étirer le film élastique chauffé dans au moins une direction de telle sorte que le film élastique durant l'étirement soit à une température d'au moins 40 °C, l'étirement étant réalisé de façon à augmenter la dimension du film dans la direction d'étirement entre 100 et 500 % de sa dimension initiale, stratifier ladite couche fibreuse au film élastique tandis que celui-ci est à l'état étiré et incorporer ultérieurement le stratifié dans un article absorbant, en conservant le stratifié soit dans une condition étirée, soit dans une condition relâchée.
PCT/SE2009/050251 2009-03-11 2009-03-11 Article absorbant comprenant un stratifié élastique et son procédé de fabrication WO2010104429A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/SE2009/050251 WO2010104429A1 (fr) 2009-03-11 2009-03-11 Article absorbant comprenant un stratifié élastique et son procédé de fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2009/050251 WO2010104429A1 (fr) 2009-03-11 2009-03-11 Article absorbant comprenant un stratifié élastique et son procédé de fabrication

Publications (1)

Publication Number Publication Date
WO2010104429A1 true WO2010104429A1 (fr) 2010-09-16

Family

ID=42728549

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2009/050251 WO2010104429A1 (fr) 2009-03-11 2009-03-11 Article absorbant comprenant un stratifié élastique et son procédé de fabrication

Country Status (1)

Country Link
WO (1) WO2010104429A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019193906A1 (fr) * 2018-04-02 2019-10-10 花王株式会社 Article absorbant de type culotte
JP2019180487A (ja) * 2018-04-02 2019-10-24 花王株式会社 伸縮シート

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4418123A (en) * 1978-12-06 1983-11-29 H. B. Fuller Company Extrudable self-adhering elastic and method of employing same
US5169706A (en) * 1990-01-10 1992-12-08 Kimberly-Clark Corporation Low stress relaxation composite elastic material
US6149637A (en) * 1994-01-03 2000-11-21 The Procter & Gamble Company Elastomeric disposable absorbent article and method of making same
WO2005110719A1 (fr) * 2004-04-30 2005-11-24 Kimberly-Clark Worldwide, Inc. Procede permettant d'obtenir un stratifie elastique polyvalent
WO2007133128A1 (fr) * 2006-05-12 2007-11-22 Sca Hygiene Products Ab Stratifié élastique et son procédé de production
WO2008004138A1 (fr) * 2006-06-30 2008-01-10 Kimberly-Clark Worldwide, Inc. Composite non tissé à élasticité latente

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4418123A (en) * 1978-12-06 1983-11-29 H. B. Fuller Company Extrudable self-adhering elastic and method of employing same
US5169706A (en) * 1990-01-10 1992-12-08 Kimberly-Clark Corporation Low stress relaxation composite elastic material
US6149637A (en) * 1994-01-03 2000-11-21 The Procter & Gamble Company Elastomeric disposable absorbent article and method of making same
WO2005110719A1 (fr) * 2004-04-30 2005-11-24 Kimberly-Clark Worldwide, Inc. Procede permettant d'obtenir un stratifie elastique polyvalent
WO2007133128A1 (fr) * 2006-05-12 2007-11-22 Sca Hygiene Products Ab Stratifié élastique et son procédé de production
WO2008004138A1 (fr) * 2006-06-30 2008-01-10 Kimberly-Clark Worldwide, Inc. Composite non tissé à élasticité latente

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019193906A1 (fr) * 2018-04-02 2019-10-10 花王株式会社 Article absorbant de type culotte
JP2019180487A (ja) * 2018-04-02 2019-10-24 花王株式会社 伸縮シート
CN111405887A (zh) * 2018-04-02 2020-07-10 花王株式会社 短裤型吸收性物品
GB2585293A (en) * 2018-04-02 2021-01-06 Kao Corp Pant-type absorbent article
RU2757895C1 (ru) * 2018-04-02 2021-10-22 Као Корпорейшн Впитывающее изделие типа трусов
CN111405887B (zh) * 2018-04-02 2021-10-22 花王株式会社 短裤型吸收性物品
JP7037990B2 (ja) 2018-04-02 2022-03-17 花王株式会社 伸縮シート
GB2585293B (en) * 2018-04-02 2022-09-07 Kao Corp Pant-type absorbent article

Similar Documents

Publication Publication Date Title
RU2566929C2 (ru) Способ образования эластичного ламината
US8298205B2 (en) Elastic laminate and absorbent article comprising the laminate
JP5059122B2 (ja) パンツ型吸収用品およびパンツ型吸収用品を製造するための方法
JP5425937B2 (ja) 使い捨て吸収性物品のための外側カバー
JP2010508958A (ja) 弾性ラミネートを備える吸収用品
EP3716929B1 (fr) Article absorbant de type culotte avec bande jetable
RU2478359C2 (ru) Абсорбирующее изделие
JP2024023394A (ja) 耳部を有する吸収性物品
JP6541792B2 (ja) パンツ型吸収物品
AU2018275205B2 (en) Front or rear opening closed-sided absorbent articles
AU2018278110B2 (en) Front or rear opening closed-sided absorbent articles
WO2010104429A1 (fr) Article absorbant comprenant un stratifié élastique et son procédé de fabrication
AU2018278108B2 (en) Front or rear opening closed-sided absorbent articles
RU2413488C1 (ru) Поглощающее изделие, содержащее эластичный ламинат
CN112533566A (zh) 裤型物品系列以及生产裤型物品系列中的裤型物品的方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09841593

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09841593

Country of ref document: EP

Kind code of ref document: A1