CA1286970C - Composite prelaminated tape system - Google Patents
Composite prelaminated tape systemInfo
- Publication number
- CA1286970C CA1286970C CA000536844A CA536844A CA1286970C CA 1286970 C CA1286970 C CA 1286970C CA 000536844 A CA000536844 A CA 000536844A CA 536844 A CA536844 A CA 536844A CA 1286970 C CA1286970 C CA 1286970C
- Authority
- CA
- Canada
- Prior art keywords
- strip
- adhesive
- anchor
- release
- sheet
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
-
- 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
- A61F13/56—Supporting or fastening means
- A61F13/58—Adhesive tab fastener elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/14—Layer or component removable to expose adhesive
- Y10T428/1476—Release layer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
Abstract
Abstract The present invention relates to composite prelaminated closure systems, particularly to prelaminated tapes useful as diaper closures. A composite adhesive closure tape of the invention comprises an assembly of sheets laminated one over the other including a central elastomeric sheet having at least one stretching axis;
anchor strips disposed over the elastomeric sheet and adhered to opposite marginal end portions of the elastomeric sheet, each anchor strip having one end portion adhered to the elastomeric sheet and an unadhered end portion extending along the stretching axis in opposite directions away from the elastomeric sheet, the unadhered end portions being covered on their bottom surfaces with adhesive; a release strip underlying the elastomeric sheet, the bottom of the release strip being at least partially covered with adhesive; and an attachment sheet underlying and adhered to a portion of one of the anchor strips and underlying end adhered to the adhesive of the release strip. The composite adhesive tape may be provided in a roll or attached to the edge of a diaper.
anchor strips disposed over the elastomeric sheet and adhered to opposite marginal end portions of the elastomeric sheet, each anchor strip having one end portion adhered to the elastomeric sheet and an unadhered end portion extending along the stretching axis in opposite directions away from the elastomeric sheet, the unadhered end portions being covered on their bottom surfaces with adhesive; a release strip underlying the elastomeric sheet, the bottom of the release strip being at least partially covered with adhesive; and an attachment sheet underlying and adhered to a portion of one of the anchor strips and underlying end adhered to the adhesive of the release strip. The composite adhesive tape may be provided in a roll or attached to the edge of a diaper.
Description
~Zl~6970 COMPO.S~TE P~ELAM~NA'rED 'l'APE SYSTEM
Field o~ the In-~ention ___ __ _.
This inventlon relates to composite prèlaminated closure systems, particularly to prelaminated tapes uæeful as diaper closures, wherein the closure tapes contain an elastic section, and are provided in roll for~ to facilitate their use in mechanized manufacturing methods, or example, in the manufacture o~ diapers.
Back~round of the Invention . _ ~
A disposahle diaper typically has a thin, flexible, stretchy, low density polyethylene film cover, an absorbent filler on the inside of the cover, and a porous inner liner overlying the filler. Sucll a diaper is positioned at the crotch of the ~earer, the two ends of the diaper extending, respectively, toward the front and back.
Adjacent edges of the ~iaper at each side are then either positioned adjacent to each other or overlapped, a strip of 2~ pressure~sensitive adhesive tape being adhered to the cover at the border adjacent each of the two edges, holding the -diaper closed. -For the comfort of the wearer it is desirable to have an elastic waistband. Ileat-unstahle film materlal has been applied to diapers to achieve an elastic waist.
~owever, it is less expensive and easier to manufacture a diaper without the elastic waistband. In lieu of the elastic waistband, it is desirable to have an elastic closure tape.
Disposable diapers must be made at high rates of ; speed in order to be manufactured economically. It is thus desirable for a manufacturer of diapers to mount a single~
roll of closure tape containing all necessary elements directly in the line of manufacture. The closure tape is applied to the diaper as a composite tape, with the width of the rol:L being substantially the same as the desired , length of the diaper closure to be fabricated. The``closùra :
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2 60557-~215 tape is severed at right angles to the edges o~ the composlte strip a~ intervals corresponding to the width of the desired closure tape and adhered at an appropriate location along the border of one side of the diaper.
Such prelaminated composite rolls must dispense the closure tape ln the form oi closure strips systematically and consistently in mechanized systems ~or manufacturing, ~or example, dlapers~ To avoid problems in manufacturing, it is necessary that the roll of closure tape be stable, which requires the tape have a generally uniform thickness throughout its width. Prior art attempts at including an elastic portion in a clo~ure tape have resulted in a tape which creates an unstab1e roll, causing substantial difficulties in automated diaper productlon lines.
Summary of the InventiQn The present invention provides a composlte prelamlnated closure tape which can be dispensed from a stable roll form to provide a closure with a central elastomeric sheet. The closure tape can securely fasten to both sides of one edge of a sheet~ for example a diaper, thereby providing greater stability to the attachment. The remaining portion of the closure tape includin~ ~-elastic central-portion and an anchor strip being capable of extending to and being attached to an adjacent sheet, for example, the other edge of a diaper.
According to one aspect of the present invention there is provided a composite adhesive closure tape comprising an assembly of sheets laminated one over the other including~
1) a central elastomeric sheet having at least one .
.
~2~6g~
Field o~ the In-~ention ___ __ _.
This inventlon relates to composite prèlaminated closure systems, particularly to prelaminated tapes uæeful as diaper closures, wherein the closure tapes contain an elastic section, and are provided in roll for~ to facilitate their use in mechanized manufacturing methods, or example, in the manufacture o~ diapers.
Back~round of the Invention . _ ~
A disposahle diaper typically has a thin, flexible, stretchy, low density polyethylene film cover, an absorbent filler on the inside of the cover, and a porous inner liner overlying the filler. Sucll a diaper is positioned at the crotch of the ~earer, the two ends of the diaper extending, respectively, toward the front and back.
Adjacent edges of the ~iaper at each side are then either positioned adjacent to each other or overlapped, a strip of 2~ pressure~sensitive adhesive tape being adhered to the cover at the border adjacent each of the two edges, holding the -diaper closed. -For the comfort of the wearer it is desirable to have an elastic waistband. Ileat-unstahle film materlal has been applied to diapers to achieve an elastic waist.
~owever, it is less expensive and easier to manufacture a diaper without the elastic waistband. In lieu of the elastic waistband, it is desirable to have an elastic closure tape.
Disposable diapers must be made at high rates of ; speed in order to be manufactured economically. It is thus desirable for a manufacturer of diapers to mount a single~
roll of closure tape containing all necessary elements directly in the line of manufacture. The closure tape is applied to the diaper as a composite tape, with the width of the rol:L being substantially the same as the desired , length of the diaper closure to be fabricated. The``closùra :
~.' . ` ',:: ' ' ' : ., ' : . i -, , . ~
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2 60557-~215 tape is severed at right angles to the edges o~ the composlte strip a~ intervals corresponding to the width of the desired closure tape and adhered at an appropriate location along the border of one side of the diaper.
Such prelaminated composite rolls must dispense the closure tape ln the form oi closure strips systematically and consistently in mechanized systems ~or manufacturing, ~or example, dlapers~ To avoid problems in manufacturing, it is necessary that the roll of closure tape be stable, which requires the tape have a generally uniform thickness throughout its width. Prior art attempts at including an elastic portion in a clo~ure tape have resulted in a tape which creates an unstab1e roll, causing substantial difficulties in automated diaper productlon lines.
Summary of the InventiQn The present invention provides a composlte prelamlnated closure tape which can be dispensed from a stable roll form to provide a closure with a central elastomeric sheet. The closure tape can securely fasten to both sides of one edge of a sheet~ for example a diaper, thereby providing greater stability to the attachment. The remaining portion of the closure tape includin~ ~-elastic central-portion and an anchor strip being capable of extending to and being attached to an adjacent sheet, for example, the other edge of a diaper.
According to one aspect of the present invention there is provided a composite adhesive closure tape comprising an assembly of sheets laminated one over the other including~
1) a central elastomeric sheet having at least one .
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stretching axis;
2) first and second anchor strips disposed over said elastomeri.c sheet and, adhered to opposite marginal edge portions of said elastomeric sheet, each anchor strip having one edge portion adhered to said elastomeric sheet and an unadhered edge portion extending along said stretching axis in opposite directions away from said elastomeric sheet, said unadhered edge por~ions being covered on their bottom .
surfaces with adhesive to provide a fastening surface, and having top surfaces of low surface energy material to provide release surfaces;
3) a release strip underlying said elastomeric sheet and said fastening surfaae of said second anchoring strip, with the top surface of said release strip in contact with said fastening surface of said second anchor strip having release properties, and with the bottom surface of said release strip being at least partially covered with adhesive;
and 4) an attachment sheet underlying and adhered to a portion of said fastening surface of said first anchor strip and underlying and adhered to a portion of the adhesive-covered surface of said release strip, whereby said release : strip is attached to the assembly along an area ad~acent said elastomeric sheet, with said release strip being pivotable about the area of attachment so that it can be pulled away from its position overlapping said elastomeric sheet and said fastening surface of said second anchor strip and folded over to a position parallel to said fastening surface of said .~
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- 3a 60557-3215 :-first anchor strip to be used to adhere a sheet between said flrst anchor strip and said release strip.
According to a further aspect of the present invention there is provided a roll of laminated strips from which a composite adhesive closure tape may be cut comprising, 1~ a central elastomeric sheet having at least one stretching axis transverse to the longitudinal length of the sheet;
2) first and second anchox strips disposed over said elastomeric sheet and adhered to opposite marginal edge portlons of the elastomeric sheet, each anchor strip having one edge portion adhered to said elastome.ric sheet and an ;
unadhered edge portion of each of said anchor strips extending along said stretching axis in opposite directions away from said elastomeric sheet, the unadhered edge port1ons being covered on their bottom surfaces with adhesive to provide a fastening surface, and having top surfaces of lo~
surface energy material to provide release surfaces;
3) a release strip underlying said elastomeric sheet and said fastening surface of said second anchoring strip, with the top surface of said relea e strip in contact with said fastening surface having release properties, and ~ith the bottom surface of said release strip being at least partially covered with adhesive; and 4) an attachmen~ strip underlying and adhering to a portion of said ~astening surface of said first anchor ætrip : and underlying and adhered to a portion of the adhesive-covered surface of said release strip, whereby said release ~ . .
b - ', . "' ' ' ~ ' ' ~ ' "' ' ,. :. , , . . - ' ', "` ' ', '.'" ' ' '~' ':' ' ' ' , ' " :'' . '' ~' , 3 Z8~9~0 3b 60557-3215 strlp is attached to the assembly along an area adjacent said elastomeric sheet; wherein ln the roll form the release surface of the first anchor strip is adjacent to and protects that portion of the fastening surface of the first anchor strip unadhered to the attachment sheet and the elastic strip, the release surface of the second anchor strip is adjacent to and protects that portion of ~he botto~ sur~ace of the release strip unadhered to the attachment sheet, and the attachment sheet is adjacent to and protects the surface of the elastomeric sheet that lies between said sheet's edge portions adhered to said anchor strips.
DescriPtion of the Drawin~s FIG. 1 ls a perspective view partially broken away to show interior detail of an open unfolded diaper.
FIG. 2 is a perspective view of the diaper of FIG. 1 in a configuration assumed by the diaper when placed a~out a wearer.
FIG. 3 is a schematic representation of a cross-section of the closure tape. ~ -FIG. 4 is a cross-sectional view of the closure tape attached to one edge of a diaper, shown in the pre-use position.
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3L;Z:8~37(~
~ IG. 5 ls a cross-sectional vlew of the closure tape attached to one edge of a diaper, shown in the use positlon.
FIG. 6 is a perspective view of a roll of the closure tape.
Deta'led Description Referring first to FIGS. 1 and 2, there is shown a diaper, generally designated lO. The diaper lO has an ln~lde surface ll, an ou~side sllrace 12 and an absorbent iller 13. The diaper lO has front edge portions 14 and back edge portions 15, as best shown in FIG. 2. The closure tapes attached to the front edqe portions l4 are generally designated 20.
~he details of the closure tape 20 are best shown in FIGS. 3 through 5. The closure tape 20 has a first anchor strip 30 and a second anchor strip 35. The anchor strips may comprise a material such as cloth, kraft paper, cellophane, polymeric sheets or other suitable materials or laminates thereof to which adhesive layers may be applied.
Polymeric sheets which may be used include polypropylene, poly~vinylchloride), poly(ethylene terephthalate1, and polyethylene. Polypropylene is presently preferred for diaper applications.
The ~irst anchor strip 30 has a fastening surface 31 adapted to attach to the ~ront edge portion 14 of the outside 12 o a diaper lO. The fastenin~ surface 31 is provided with an aggressive ~ressure~sensitive adhesive to ; ~ permanently attach the first anchor portion 30 to the - 30 diaper lO. The pressure sensitive adhesive of the ~ fastening surface 31 will typically have a peel strength of ; between 7 and lO newtons per 25 mm, preferably about 8 newtons per 25 mm, howeYer, adhesives having other peel strength can certainly be used as desired. In order to measure peel strength of the adl1esive, standard methods well known to the art such as the adhesion to a steel, po1yethylene or polyester surface at l~0 or 90 degree~ ~s .
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descrlbed hereinbelow or such as that described in U.S.
Patent 4,227,530 or variations thereo may be used.
The 90 peel adllesion was measured as ~ollows: a 330-micrometer thick sheet of low density polyethylene (e.g., Eastman 1550 p-16421) is cast on a highly polished chrome roll and cooled to room temperature. ~est samples approximately ~0 mm x 300 mm are then cut from this polyethylene sheet and a hiq3l1y aggressive double-coated pressure-sensitlve adheslve tape used to bond the non-shlny surace of ~he polye~hylene to a smooth steel panel. A 25 mm x 300 mm specimen of tape ~o be evaluate~ as a potentlal diaper closure is then obtained and the adhesive surface placed in contact with a shiny surface of the polyethylene sheet and forccd into intimate contact with one forward ancl back pass of a mechanically operated 100 9 roller. Within one minute thereafter the steel test panel is then mounted in the lower jaw of an "Instron" tensile testinq machine with the tape surface upward. The free end of the tape strip is then pulled upward at 90 an~ mounted in the upper jaw of the tensile testin~ machine. The upper and lower jaws are separated at a rate of approximately 300 mmfmin.
notin~ the average force required for removal.
The first anchor strip 30 also includes a release surface 32, an unadhered ed~e portion 33 and an adhered edge portion 34. The release surface 32 is coat0d with a low surface energy material such as wax, a silicone resin or a perfluoropolymer to which pressure-sensitive adhesives will not easily adhere. Silicone resins are presently preferred because they are useful with a wider variety of adhesives and backings.
The second~anchor strip 35 includes a fastening surface 36 adapted to attach to the outside 12 o the back edge portion 15 of the diaper 10 to secure the back edge pbrtion 15 ad~acent the front ed~e portion 14. The fastening surface 36 is preferably provided with a lower adhesion pressure sensitive adhesive to allow the second~
anchor strip 35 to be refastenable. Thus, typically the .
~2~6~0 pressure-sensitive adhesive of the fastening surface 36 has a peel 6trength betwe~n about ~ to 7 ne~7tons p~r 25 mm, preferably about 6 newtons per 25 mm, measured by the above described method, however, the peel strength may be varied as desired.
The second anchor strip 35 further includes a release surface 37, an unadhered ed~e portlon 3a and an adhered edge portion 39. The release surPace 37 has a release coating similar to tllat o the release surface 32, described above.
Attached to the unadhered edge portion 38 of the fastening surface 36 is a finger tab ~0. The tab ~0 is provided to allow easy removal of the second anchor strip 35 from a surface to which it is attached. The material used to make the finger tab 40 will typically be a thln film, for example, polypropylene film. An alternative embodiment does not include the finger tab 90, but instead has the marginal edge of the unadhered edge portion 38 of the fastening surface 36 free from adhesive.
The closure tape 20 f~lrther includes an elastomeric sheet 50, having a first marginal edge portion 52 and a second mar~inal edge portion 54. The first marginal edge portion 52 is secured to the adhered edqe portion 39 of the fastening surface 31 of the flrst anchor strip 30 by~means of an adhesive strip 45. The second marginal edge portion 54 is secured to the adhered edge portion 39 of the fastening surface 36 of the second anchor strip 35 by means of an adhesive strip 47. The elastomeric sheet 50 may be an elastomeric polyurethane film, or may be a synthetic or natural rubber. Elastomeric re~ecs to a material which ma~y be repeatedly stretched and returns to its ori~inal dimension after the stretching force is released. Polyurethane which is elastomeric is presently preferred. The thickness of the elastomeric sheet 50 may be 30 to 12~0 micrometers and is preferably about 40 to 60 micrometers. Excessive thickness in this layer can result in reduced stability of he composite roll during - ~ , . . . . .
12~69~7 manufacturing.
The closure tape 20 also includes a release strip 60 and an attachment sheet 7~. The release strip 60 has a release surface 62, a fastening surface 64, a secured portion, 66 and a free portion 6~. The attachment sheet 70 includes a topside 72, a bottom slde 7~, a pivotable end 76 and an attached portion 7~. The pivotal end 76 1B attached to a portion of the fastening s-urface 31 of the first anchor strip 30. The fastenlng surface 64 is coated with adhesive, with the secured portion 66 of the release strip 60 attached to the top side 72 of the attachment sheet 70.
The release surface 62 of the release strip 60 has release properties allowing the fastening surface 36 of the second anchor strip 35 to adhere an~ be pulled away from the free portion 68 of the release strip 60 as ~esired. The fastening surface 64 is adapted to be secured to the inside 11 of the front edge portion 14 of the diaper 10. The fastening surface 64 is typically provided with an aggressive pressure-sensitive adhesive to permanently secure it to the inside 11 of the ~ront ed~e portion 14.
To accomplish this the fastening surface 64 is typically coated with A pressure-sensitive adhesive havlng a peel strength of between about 7 and about 10 newtons per 25 mm, preferahly about ~ newtons per 25 mm, measured by the above described method, however, adhesives having varied peel strenqths may certainly be used.
The pressure-sensitive adhesives coated on fastening surfaces 31, 36 and 6~ may be any conventional highly elastomeric and normally kacky pressure-sensitive adhesive. Suitable adhesives include conventional rubber-based adhesives (also called rubber-resih adheslves) which have their tackiness modified by the inclusion of tackifying resins such as those described in U S. Patent No. 4,136,071. These resins are styrene-isoprene-styrene block copolymers which~include a minor amount of styrene-isoprene blocks and are tackified with synthetic polyterpene.
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3ti9~70 The attachment sheet 70 prevents the ~astenlng surface 64 of the release strip 60 from a~lherinq to the elastomeric strip 50 when the tape is in the roll form.
The attachment sheet 70 is therefore l~si~ioned to extend between the adhered eclge portions 3~, 39 of the anchor strips 30, 35. The attacllment sheet 70 adhere~ to the fastening sur~aCe 31 acllievec, better loa~ distribution when the closure tape 20 is used to secure a diaper as describk below, A closure tape of tlle invention has at least one stretching axis, wllich is parallel to the plane of the sheet on which FIG. 3 is drawn, or lengthwise of the closure tapes 20 as shown on the diaper 10 in FIG. 2.
Closure tapes of the inventioll can be cut f om a stock lS material wound in a roll in which case the described stretching axis is transverse to the lenqth of the stock material. In use, a segment of a roll of closure tape 20 is cut from the roll in a desired width; see FIG. 6 which shows the dotted line along whicll the tape is cut.
Thereupon, the fastening surface 31 of the first anchor strip 30 is secured to the outside 12 of the front edge portion 14 of a diaper 10 as shown in FIG. ~. The attachment sheet 70 and the release strip 60 are folded around the front edge portion 14 and the free end 6B of the fastening surface 6~ is secured to the inside 11 of the front edge portion 14. The second ~nchor strip 35 is folded around the diaper 10 and adhered to the release surface 62 of the free end 68. The tape is now in the pre-use position as shown in FIG. 4. It is contemplated that a diaper would~.be sold to the consulner in this condition.
In use, a diaper 10 containing the tape 20 of the present invention is positioned around a wearer, as shown in FIG. 2. To secure the front edge portion 14 to the back edge portion 15 the inger tab 40 is grasped and the fastening surface 36 is pulled away from the release surface 62. The fastening surfaFe 36 is then secured to ' .
~28~i97~3 the outer cover 12 of the back edge portion 15. When the same process is followed on the other side of the wearer, the diaper is then ~ecured in place with the elastomeric sheet 50 provided a flexible connection between the ront edge portion 14 and the rear edge portion 15 of the diaper 10 .
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2) first and second anchor strips disposed over said elastomeri.c sheet and, adhered to opposite marginal edge portions of said elastomeric sheet, each anchor strip having one edge portion adhered to said elastomeric sheet and an unadhered edge portion extending along said stretching axis in opposite directions away from said elastomeric sheet, said unadhered edge por~ions being covered on their bottom .
surfaces with adhesive to provide a fastening surface, and having top surfaces of low surface energy material to provide release surfaces;
3) a release strip underlying said elastomeric sheet and said fastening surfaae of said second anchoring strip, with the top surface of said release strip in contact with said fastening surface of said second anchor strip having release properties, and with the bottom surface of said release strip being at least partially covered with adhesive;
and 4) an attachment sheet underlying and adhered to a portion of said fastening surface of said first anchor strip and underlying and adhered to a portion of the adhesive-covered surface of said release strip, whereby said release : strip is attached to the assembly along an area ad~acent said elastomeric sheet, with said release strip being pivotable about the area of attachment so that it can be pulled away from its position overlapping said elastomeric sheet and said fastening surface of said second anchor strip and folded over to a position parallel to said fastening surface of said .~
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- 3a 60557-3215 :-first anchor strip to be used to adhere a sheet between said flrst anchor strip and said release strip.
According to a further aspect of the present invention there is provided a roll of laminated strips from which a composite adhesive closure tape may be cut comprising, 1~ a central elastomeric sheet having at least one stretching axis transverse to the longitudinal length of the sheet;
2) first and second anchox strips disposed over said elastomeric sheet and adhered to opposite marginal edge portlons of the elastomeric sheet, each anchor strip having one edge portion adhered to said elastome.ric sheet and an ;
unadhered edge portion of each of said anchor strips extending along said stretching axis in opposite directions away from said elastomeric sheet, the unadhered edge port1ons being covered on their bottom surfaces with adhesive to provide a fastening surface, and having top surfaces of lo~
surface energy material to provide release surfaces;
3) a release strip underlying said elastomeric sheet and said fastening surface of said second anchoring strip, with the top surface of said relea e strip in contact with said fastening surface having release properties, and ~ith the bottom surface of said release strip being at least partially covered with adhesive; and 4) an attachmen~ strip underlying and adhering to a portion of said ~astening surface of said first anchor ætrip : and underlying and adhered to a portion of the adhesive-covered surface of said release strip, whereby said release ~ . .
b - ', . "' ' ' ~ ' ' ~ ' "' ' ,. :. , , . . - ' ', "` ' ', '.'" ' ' '~' ':' ' ' ' , ' " :'' . '' ~' , 3 Z8~9~0 3b 60557-3215 strlp is attached to the assembly along an area adjacent said elastomeric sheet; wherein ln the roll form the release surface of the first anchor strip is adjacent to and protects that portion of the fastening surface of the first anchor strip unadhered to the attachment sheet and the elastic strip, the release surface of the second anchor strip is adjacent to and protects that portion of ~he botto~ sur~ace of the release strip unadhered to the attachment sheet, and the attachment sheet is adjacent to and protects the surface of the elastomeric sheet that lies between said sheet's edge portions adhered to said anchor strips.
DescriPtion of the Drawin~s FIG. 1 ls a perspective view partially broken away to show interior detail of an open unfolded diaper.
FIG. 2 is a perspective view of the diaper of FIG. 1 in a configuration assumed by the diaper when placed a~out a wearer.
FIG. 3 is a schematic representation of a cross-section of the closure tape. ~ -FIG. 4 is a cross-sectional view of the closure tape attached to one edge of a diaper, shown in the pre-use position.
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.
3L;Z:8~37(~
~ IG. 5 ls a cross-sectional vlew of the closure tape attached to one edge of a diaper, shown in the use positlon.
FIG. 6 is a perspective view of a roll of the closure tape.
Deta'led Description Referring first to FIGS. 1 and 2, there is shown a diaper, generally designated lO. The diaper lO has an ln~lde surface ll, an ou~side sllrace 12 and an absorbent iller 13. The diaper lO has front edge portions 14 and back edge portions 15, as best shown in FIG. 2. The closure tapes attached to the front edqe portions l4 are generally designated 20.
~he details of the closure tape 20 are best shown in FIGS. 3 through 5. The closure tape 20 has a first anchor strip 30 and a second anchor strip 35. The anchor strips may comprise a material such as cloth, kraft paper, cellophane, polymeric sheets or other suitable materials or laminates thereof to which adhesive layers may be applied.
Polymeric sheets which may be used include polypropylene, poly~vinylchloride), poly(ethylene terephthalate1, and polyethylene. Polypropylene is presently preferred for diaper applications.
The ~irst anchor strip 30 has a fastening surface 31 adapted to attach to the ~ront edge portion 14 of the outside 12 o a diaper lO. The fastenin~ surface 31 is provided with an aggressive ~ressure~sensitive adhesive to ; ~ permanently attach the first anchor portion 30 to the - 30 diaper lO. The pressure sensitive adhesive of the ~ fastening surface 31 will typically have a peel strength of ; between 7 and lO newtons per 25 mm, preferably about 8 newtons per 25 mm, howeYer, adhesives having other peel strength can certainly be used as desired. In order to measure peel strength of the adl1esive, standard methods well known to the art such as the adhesion to a steel, po1yethylene or polyester surface at l~0 or 90 degree~ ~s .
, : - ' : ~ . . .: . ' , . ~ .
~2~7~
descrlbed hereinbelow or such as that described in U.S.
Patent 4,227,530 or variations thereo may be used.
The 90 peel adllesion was measured as ~ollows: a 330-micrometer thick sheet of low density polyethylene (e.g., Eastman 1550 p-16421) is cast on a highly polished chrome roll and cooled to room temperature. ~est samples approximately ~0 mm x 300 mm are then cut from this polyethylene sheet and a hiq3l1y aggressive double-coated pressure-sensitlve adheslve tape used to bond the non-shlny surace of ~he polye~hylene to a smooth steel panel. A 25 mm x 300 mm specimen of tape ~o be evaluate~ as a potentlal diaper closure is then obtained and the adhesive surface placed in contact with a shiny surface of the polyethylene sheet and forccd into intimate contact with one forward ancl back pass of a mechanically operated 100 9 roller. Within one minute thereafter the steel test panel is then mounted in the lower jaw of an "Instron" tensile testinq machine with the tape surface upward. The free end of the tape strip is then pulled upward at 90 an~ mounted in the upper jaw of the tensile testin~ machine. The upper and lower jaws are separated at a rate of approximately 300 mmfmin.
notin~ the average force required for removal.
The first anchor strip 30 also includes a release surface 32, an unadhered ed~e portion 33 and an adhered edge portion 34. The release surface 32 is coat0d with a low surface energy material such as wax, a silicone resin or a perfluoropolymer to which pressure-sensitive adhesives will not easily adhere. Silicone resins are presently preferred because they are useful with a wider variety of adhesives and backings.
The second~anchor strip 35 includes a fastening surface 36 adapted to attach to the outside 12 o the back edge portion 15 of the diaper 10 to secure the back edge pbrtion 15 ad~acent the front ed~e portion 14. The fastening surface 36 is preferably provided with a lower adhesion pressure sensitive adhesive to allow the second~
anchor strip 35 to be refastenable. Thus, typically the .
~2~6~0 pressure-sensitive adhesive of the fastening surface 36 has a peel 6trength betwe~n about ~ to 7 ne~7tons p~r 25 mm, preferably about 6 newtons per 25 mm, measured by the above described method, however, the peel strength may be varied as desired.
The second anchor strip 35 further includes a release surface 37, an unadhered ed~e portlon 3a and an adhered edge portion 39. The release surPace 37 has a release coating similar to tllat o the release surface 32, described above.
Attached to the unadhered edge portion 38 of the fastening surface 36 is a finger tab ~0. The tab ~0 is provided to allow easy removal of the second anchor strip 35 from a surface to which it is attached. The material used to make the finger tab 40 will typically be a thln film, for example, polypropylene film. An alternative embodiment does not include the finger tab 90, but instead has the marginal edge of the unadhered edge portion 38 of the fastening surface 36 free from adhesive.
The closure tape 20 f~lrther includes an elastomeric sheet 50, having a first marginal edge portion 52 and a second mar~inal edge portion 54. The first marginal edge portion 52 is secured to the adhered edqe portion 39 of the fastening surface 31 of the flrst anchor strip 30 by~means of an adhesive strip 45. The second marginal edge portion 54 is secured to the adhered edge portion 39 of the fastening surface 36 of the second anchor strip 35 by means of an adhesive strip 47. The elastomeric sheet 50 may be an elastomeric polyurethane film, or may be a synthetic or natural rubber. Elastomeric re~ecs to a material which ma~y be repeatedly stretched and returns to its ori~inal dimension after the stretching force is released. Polyurethane which is elastomeric is presently preferred. The thickness of the elastomeric sheet 50 may be 30 to 12~0 micrometers and is preferably about 40 to 60 micrometers. Excessive thickness in this layer can result in reduced stability of he composite roll during - ~ , . . . . .
12~69~7 manufacturing.
The closure tape 20 also includes a release strip 60 and an attachment sheet 7~. The release strip 60 has a release surface 62, a fastening surface 64, a secured portion, 66 and a free portion 6~. The attachment sheet 70 includes a topside 72, a bottom slde 7~, a pivotable end 76 and an attached portion 7~. The pivotal end 76 1B attached to a portion of the fastening s-urface 31 of the first anchor strip 30. The fastenlng surface 64 is coated with adhesive, with the secured portion 66 of the release strip 60 attached to the top side 72 of the attachment sheet 70.
The release surface 62 of the release strip 60 has release properties allowing the fastening surface 36 of the second anchor strip 35 to adhere an~ be pulled away from the free portion 68 of the release strip 60 as ~esired. The fastening surface 64 is adapted to be secured to the inside 11 of the front edge portion 14 of the diaper 10. The fastening surface 64 is typically provided with an aggressive pressure-sensitive adhesive to permanently secure it to the inside 11 of the ~ront ed~e portion 14.
To accomplish this the fastening surface 64 is typically coated with A pressure-sensitive adhesive havlng a peel strength of between about 7 and about 10 newtons per 25 mm, preferahly about ~ newtons per 25 mm, measured by the above described method, however, adhesives having varied peel strenqths may certainly be used.
The pressure-sensitive adhesives coated on fastening surfaces 31, 36 and 6~ may be any conventional highly elastomeric and normally kacky pressure-sensitive adhesive. Suitable adhesives include conventional rubber-based adhesives (also called rubber-resih adheslves) which have their tackiness modified by the inclusion of tackifying resins such as those described in U S. Patent No. 4,136,071. These resins are styrene-isoprene-styrene block copolymers which~include a minor amount of styrene-isoprene blocks and are tackified with synthetic polyterpene.
.
.
. . .~ i .
3ti9~70 The attachment sheet 70 prevents the ~astenlng surface 64 of the release strip 60 from a~lherinq to the elastomeric strip 50 when the tape is in the roll form.
The attachment sheet 70 is therefore l~si~ioned to extend between the adhered eclge portions 3~, 39 of the anchor strips 30, 35. The attacllment sheet 70 adhere~ to the fastening sur~aCe 31 acllievec, better loa~ distribution when the closure tape 20 is used to secure a diaper as describk below, A closure tape of tlle invention has at least one stretching axis, wllich is parallel to the plane of the sheet on which FIG. 3 is drawn, or lengthwise of the closure tapes 20 as shown on the diaper 10 in FIG. 2.
Closure tapes of the inventioll can be cut f om a stock lS material wound in a roll in which case the described stretching axis is transverse to the lenqth of the stock material. In use, a segment of a roll of closure tape 20 is cut from the roll in a desired width; see FIG. 6 which shows the dotted line along whicll the tape is cut.
Thereupon, the fastening surface 31 of the first anchor strip 30 is secured to the outside 12 of the front edge portion 14 of a diaper 10 as shown in FIG. ~. The attachment sheet 70 and the release strip 60 are folded around the front edge portion 14 and the free end 6B of the fastening surface 6~ is secured to the inside 11 of the front edge portion 14. The second ~nchor strip 35 is folded around the diaper 10 and adhered to the release surface 62 of the free end 68. The tape is now in the pre-use position as shown in FIG. 4. It is contemplated that a diaper would~.be sold to the consulner in this condition.
In use, a diaper 10 containing the tape 20 of the present invention is positioned around a wearer, as shown in FIG. 2. To secure the front edge portion 14 to the back edge portion 15 the inger tab 40 is grasped and the fastening surface 36 is pulled away from the release surface 62. The fastening surfaFe 36 is then secured to ' .
~28~i97~3 the outer cover 12 of the back edge portion 15. When the same process is followed on the other side of the wearer, the diaper is then ~ecured in place with the elastomeric sheet 50 provided a flexible connection between the ront edge portion 14 and the rear edge portion 15 of the diaper 10 .
': ' , ; ~ ,' .
:
. :
:: ;
~ 35 .
:~ :
' : : :
- . ~ . , ~ . ~. . .
Claims (13)
1. A composite adhesive closure tape comprising an assembly of sheets laminated one over the other including:
1) a central elastomeric sheet having at least one stretching axis;
1) a central elastomeric sheet having at least one stretching axis;
2) first and second anchor strips disposed over said elastomeric sheet and, adhered to opposite marginal edge portions of said elastomeric sheet, each anchor strip having one edge portion adhered to said elastomeric sheet and an unadhered edge portion extending along said stretching axis in opposite directions away from said elastomeric sheet, said unadhered edge portions being covered on their bottom surfaces with adhesive to provide a fastening surface, and having top surfaces of low surface energy material to provide release surfaces;
3) a release strip underlying said elastomeric sheet and said fastening surface of said second anchoring strip, with the top surface of said release strip in contact with said fastening surface of said second anchor strip having release properties, and with the bottom surface of said release strip being at least partially covered with adhesive;
and
and
4) an attachment sheet underlying and adhered to a portion of said fastening surface of said first anchor strip and underlying and adhered to a portion of the adhesive-covered surface of said release strip, whereby said release strip is attached to the assembly along an area adjacent said elastomeric sheet, with said release strip being pivotable about the area of attachment so that it can be pulled away from its position overlapping said elastomeric sheet and said fastening surface of said second anchor strip and folded over to a position parallel to said fastening surface of said first anchor strip to be used to adhere a sheet between said first anchor strip and said release strip.
2. The tape of claim 1 wherein said adhesive of said first anchor strip has a greater peel strength than the pressure-sensitive adhesive of said second anchor strip.
3. The tape of claim 2 wherein said adhesive of said first anchor strip has a peel strength greater than 7 newtons per 25 mm.
4. The tape of claim 3 wherein said adhesive of said second anchor strip has a peel strength less than 7 newtons per 25 mm
2. The tape of claim 1 wherein said adhesive of said first anchor strip has a greater peel strength than the pressure-sensitive adhesive of said second anchor strip.
3. The tape of claim 2 wherein said adhesive of said first anchor strip has a peel strength greater than 7 newtons per 25 mm.
4. The tape of claim 3 wherein said adhesive of said second anchor strip has a peel strength less than 7 newtons per 25 mm
5. The tape of claim 1 and also including adhesive portions adhering said anchor strips to said elastic sheet.
6. The tape of claim 1 wherein the marginal edge of said unadhered end portion of said second anchor strip is free from adhesive.
7. The tape of claim 1 and also including a tab attached to said unadhered edge portion of said second anchor strip.
8. A roll of laminated strips from which a composite adhesive closure tape may be cut comprising:
1) a central elastomeric sheet having at least one stretching axis transverse to the longitudinal length of the sheet;
2) first and second anchor strips disposed over said elastomeric sheet and adhered to opposite marginal edge portions of the elastomeric sheet, each anchor strip having one edge portion adhered to said elastomeric sheet and an unadhered edge portion of each of said anchor strips extending along said stretching axis in opposite directions away from said elastomeric sheet, the unadhered edge portions being covered on their bottom surfaces with adhesive to provide a fastening surface, and having top surfaces of low surface energy material to provide release surfaces;
3) a release strip underlying said elastomeric sheet and said fastening surface of said second anchoring strip, with the top surface of said release strip in contact with said fastening surface having release properties, and with the bottom surface of said release strip being at least partially covered with adhesive; and 4) an attachment strip underlying and adhering to a portion of said fastening surface of said first anchor strip and underlying and adhered to a portion of the adhesive-covered surface of said release strip, whereby said release strip is attached to the assembly along an area adjacent said elastomeric sheet; wherein in the roll form the release surface of the first anchor strip is adjacent to and protects that portion of the fastening surface of the first anchor strip unadhered to the attachment sheet and the elastic strip, the release surface of the second anchor strip is adjacent to and protects that portion of the bottom surface of the release strip unadhered to the attachment sheet, and the attachment sheet is adjacent to and protects the surface of the elastomeric sheet that lies between said sheet's edge portions adhered to said anchor strips.
1) a central elastomeric sheet having at least one stretching axis transverse to the longitudinal length of the sheet;
2) first and second anchor strips disposed over said elastomeric sheet and adhered to opposite marginal edge portions of the elastomeric sheet, each anchor strip having one edge portion adhered to said elastomeric sheet and an unadhered edge portion of each of said anchor strips extending along said stretching axis in opposite directions away from said elastomeric sheet, the unadhered edge portions being covered on their bottom surfaces with adhesive to provide a fastening surface, and having top surfaces of low surface energy material to provide release surfaces;
3) a release strip underlying said elastomeric sheet and said fastening surface of said second anchoring strip, with the top surface of said release strip in contact with said fastening surface having release properties, and with the bottom surface of said release strip being at least partially covered with adhesive; and 4) an attachment strip underlying and adhering to a portion of said fastening surface of said first anchor strip and underlying and adhered to a portion of the adhesive-covered surface of said release strip, whereby said release strip is attached to the assembly along an area adjacent said elastomeric sheet; wherein in the roll form the release surface of the first anchor strip is adjacent to and protects that portion of the fastening surface of the first anchor strip unadhered to the attachment sheet and the elastic strip, the release surface of the second anchor strip is adjacent to and protects that portion of the bottom surface of the release strip unadhered to the attachment sheet, and the attachment sheet is adjacent to and protects the surface of the elastomeric sheet that lies between said sheet's edge portions adhered to said anchor strips.
9. The roll of claim 8 wherein said adhesive of said first anchor strip has a greater peel strength than said adhesive of said second anchor strip.
10. The roll of claim 9 wherein said adhesive of said first anchor strip has a peel strength greater than 7 newtons per 25 mm.
11. The roll of claim 10 wherein said adhesive of said second anchor strip has a peel strength of less than 7 newtons per 25 mm.
12. The roll of claim 8 and also including adhesive portions adhering said anchor strips to said elastic sheet.
13. The roll of claim 8 wherein the marginal edge of said unadhered end portion of said second anchor strip is free from adhesive.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US867,520 | 1986-05-27 | ||
| US06/867,520 US4778701A (en) | 1986-05-27 | 1986-05-27 | Composite prelaminated tape system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1286970C true CA1286970C (en) | 1991-07-30 |
Family
ID=25349950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000536844A Expired - Fee Related CA1286970C (en) | 1986-05-27 | 1987-05-11 | Composite prelaminated tape system |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4778701A (en) |
| EP (1) | EP0247855B1 (en) |
| JP (1) | JP2643148B2 (en) |
| KR (1) | KR950005337B1 (en) |
| AU (1) | AU596177B2 (en) |
| CA (1) | CA1286970C (en) |
| DE (1) | DE3777244D1 (en) |
| ES (1) | ES2030061T3 (en) |
| MX (1) | MX165264B (en) |
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| US5057097A (en) * | 1988-09-13 | 1991-10-15 | Avery Dennison Corporation | Stretchable but stable film and fastening tape |
| US5176670A (en) * | 1988-12-20 | 1993-01-05 | Kimberly-Clark Corporation | Disposable diaper with improved mechanical fastening system |
| US5176671A (en) * | 1988-12-20 | 1993-01-05 | Kimberly-Clark Corporation | Fastening system for disposable diaper with disposability feature |
| US6004670A (en) * | 1989-10-26 | 1999-12-21 | Minnesota Mining And Manufacturing Company | Multiple releasable contact responsive fasteners |
| US5888335A (en) * | 1989-10-26 | 1999-03-30 | Minnesota Mining And Manufacturing Company | Multiple releasable contact responsive fasteners |
| CA2032125A1 (en) * | 1990-02-22 | 1991-08-23 | John A. Miller | Repositionable adhesive tape |
| US5429856A (en) * | 1990-03-30 | 1995-07-04 | Minnesota Mining And Manufacturing Company | Composite materials and process |
| US5354597A (en) * | 1990-03-30 | 1994-10-11 | Minnesota Mining And Manufacturing Company | Elastomeric tapes with microtextured skin layers |
| US5344691A (en) * | 1990-03-30 | 1994-09-06 | Minnesota Mining And Manufacturing Company | Spatially modified elastic laminates |
| US5133707A (en) * | 1990-07-26 | 1992-07-28 | Minnesota Mining And Manufacturing Company | Transparent indicia embossed film |
| JPH0759244B2 (en) * | 1990-10-16 | 1995-06-28 | 日東電工株式会社 | Disposable diaper with a structure of the peeling part and the noise of peeling |
| DE4033850A1 (en) * | 1990-10-24 | 1992-04-30 | Minnesota Mining & Mfg | INTO A ROLE ENDLESSLY WINDED, COMPOSED LAMINATE ADHESIVE TAPE AND METHOD FOR PRODUCING THE ROLE OF LAMINATE ADHESIVE TAPE |
| US5300057A (en) * | 1990-11-20 | 1994-04-05 | Minnesota Mining And Manufacturing Company | Frontal tape-based diaper closure system |
| CA2053110C (en) | 1990-12-17 | 2002-09-10 | Bruce M. Siebers | Diaper or absorbent article with tensioning attachment |
| US5376430A (en) * | 1992-06-19 | 1994-12-27 | Minnesota Mining And Manufacturing Company | Elastic film laminate |
| US5288546A (en) * | 1992-07-31 | 1994-02-22 | Kimberly-Clark Corporation | Attachment tape finger tab |
| MY116333A (en) * | 1993-04-05 | 2004-01-31 | Kao Corp | Disposable diaper |
| US5807368A (en) * | 1993-06-14 | 1998-09-15 | Minnesota Mining And Manufacturing Company | Disposable garment formed from an elastic film laminate |
| US5399219A (en) * | 1994-02-23 | 1995-03-21 | Kimberly-Clark Corporation | Method for making a fastening system for a dynamic fitting diaper |
| CA2130968A1 (en) * | 1994-08-12 | 1996-02-13 | Eric Donald Johnson | Diaper with improved lateral elongation characteristics |
| US5531731A (en) * | 1994-09-07 | 1996-07-02 | Kimberly-Clark Corporation | Tape fastener for conveying information and method of manufacture |
| US5605735A (en) * | 1994-12-28 | 1997-02-25 | Kimberly-Clark Corporation | High-peel tab fastener |
| BR9510144A (en) * | 1995-01-14 | 1997-12-30 | Minnesota Mining & Mfg | Stable roll of pre-laminated composite tape and its use |
| JP3007564B2 (en) * | 1995-03-17 | 2000-02-07 | 花王株式会社 | Absorbent articles |
| US5549592A (en) * | 1995-04-03 | 1996-08-27 | Kimberly-Clark Corporation | Absorbent article with a laminated tape |
| US5595618A (en) * | 1995-04-03 | 1997-01-21 | Kimberly-Clark Corporation | Assembly process for a laminated tape |
| US5773374A (en) * | 1995-04-24 | 1998-06-30 | Wood; Leigh E. | Composite materials and process |
| US5912059A (en) * | 1996-08-16 | 1999-06-15 | Minnesota Mining And Manufacturing Company | Ostomy pouch having non-tacky fastener system |
| JP3217289B2 (en) * | 1997-01-31 | 2001-10-09 | ユニ・チャーム株式会社 | Disposable body fluid absorbing wear article |
| WO1999001100A1 (en) * | 1997-07-01 | 1999-01-14 | Paul Hartmann Ag | Disposable hygienic article |
| US6461715B1 (en) | 1997-07-15 | 2002-10-08 | 3M Innovative Properties Company | Article closure tape for an absorbent |
| US6221483B1 (en) | 1998-09-10 | 2001-04-24 | Avery Dennison Corporation | Reversibly extensible film |
| CA2391864A1 (en) * | 1999-08-26 | 2001-03-01 | Toshiyuki Matsuda | Fastener device and disposable product using the same |
| US6656171B1 (en) | 1999-08-26 | 2003-12-02 | The Procter & Gamble Company | Fastener device and disposable product using the same |
| US6719744B2 (en) | 2000-03-15 | 2004-04-13 | 3M Innovative Properties Company | Elastic closure tape tab for disposable absorbent articles such as diapers |
| US7014631B2 (en) | 2002-04-12 | 2006-03-21 | 3M Innovative Properties Company | Elastic closure tab |
| JP4077707B2 (en) * | 2002-10-10 | 2008-04-23 | ユニ・チャーム株式会社 | Disposable diapers |
| EP1449505A1 (en) * | 2003-02-24 | 2004-08-25 | 3M Innovative Properties Company | Elastic fastening tab, fastening system and method for manufacturing the same |
| WO2004105671A1 (en) * | 2003-05-28 | 2004-12-09 | Avery Dennison Corporation | Stretchable fastener |
| EP1543807A1 (en) * | 2003-12-18 | 2005-06-22 | 3M Innovative Properties Company | Closure tape tab for an absorbent article, prelaminated closure tape and method of manufacturing the closure tape tab |
| US20060251342A1 (en) * | 2005-05-04 | 2006-11-09 | Forman Josephine A | Reclosable packages |
| US8066686B2 (en) * | 2005-06-16 | 2011-11-29 | Avery Dennison Corporation | Diaper fastener |
| US7736352B2 (en) * | 2006-01-25 | 2010-06-15 | 3M Innovative Properties Company | Closure tape tab for absorbent article, prelaminated closure tape, and method of manufacturing a closure tape |
| EP1820482A1 (en) * | 2006-02-17 | 2007-08-22 | The Procter & Gamble Company | Diaper closure elements |
| US10257986B1 (en) | 2012-12-13 | 2019-04-16 | L.P. Brown Company, Inc. | Harvested bale wrapping material |
| CN105637052B (en) | 2013-07-26 | 2019-05-03 | Tama塑料工业 | Looping screen component and looping method |
| US10286625B2 (en) | 2013-08-20 | 2019-05-14 | Tama Plastic Industry | Wrapping material and method of manufacture for baling materials |
| US10377545B2 (en) | 2015-03-24 | 2019-08-13 | L.P. Brown Company, Inc. | Wrapping materials for solid objects |
| EP3442485B1 (en) * | 2016-04-13 | 2021-10-27 | Avery Dennison Corporation | Adhesive tape assemblies |
| US10264732B2 (en) | 2016-09-27 | 2019-04-23 | L.P. Brown Company, Inc. | Harvested bale wrapping material sheets |
| EP3761935A1 (en) * | 2018-03-05 | 2021-01-13 | Avery Dennison Corporation | Adhesive tape assemblies |
| US11142382B1 (en) | 2019-04-19 | 2021-10-12 | L.P. Brown Company, Inc. | Harvested bale wrapping material and sealing accessory to deliver and protect a closing adhesive |
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| US3800796A (en) * | 1972-04-13 | 1974-04-02 | E Jacob | Disposable diaper with semielastic strip fasteners |
| US3999545A (en) * | 1975-12-19 | 1976-12-28 | Johnson & Johnson | Diaper having tab fastener with zone coated adhesive |
| US4044767A (en) * | 1976-02-27 | 1977-08-30 | Johnson & Johnson | Tab fastener having two tape segments attached to each other and to diaper |
| US4051853A (en) * | 1976-08-09 | 1977-10-04 | Colgate-Palmolive Company | Diaper with extensible fastener |
| US4066081A (en) * | 1976-11-18 | 1978-01-03 | Colgate-Palmolive Company | Diaper with extensible fastener |
| US4074716A (en) * | 1977-01-03 | 1978-02-21 | Colgate-Palmolive Company | Diaper with elastic fastener tab |
| US4227530A (en) * | 1977-08-29 | 1980-10-14 | Scott Paper Company | Method of employing reclosable fastener tape system |
| FR2403036A1 (en) * | 1977-09-16 | 1979-04-13 | Celatose Sa | Elastic adhesive straps for securing baby pants - to accommodate temporary variation in the girth of the wearer |
| FR2413891A1 (en) * | 1978-01-06 | 1979-08-03 | Beghin Say Sa | FOLDED FASTENERS AND METHOD OF MANUFACTURING |
| FR2484798A1 (en) * | 1980-06-19 | 1981-12-24 | Beghin Say Sa | ELASTIC FASTENERS FOR COUCHE-CULOTTE |
| US4389212A (en) * | 1981-12-02 | 1983-06-21 | Personal Products Company | Diaper with potentially elastic tape fastener |
| DE8212480U1 (en) * | 1982-04-30 | 1982-08-05 | Beiersdorf Ag, 2000 Hamburg | ELASTIC PERSONAL DIAPER CLOSURE |
| FR2543430B1 (en) * | 1983-03-29 | 1986-11-14 | Beghin Say Sa | DISPOSABLE LAYER, PARTICULARLY FOR INCONTINENT ADULT |
| AU3516184A (en) * | 1983-12-06 | 1985-06-13 | Minnesota Mining And Manufacturing Company | Composite tape suitable for refastenable tape closure |
-
1986
- 1986-05-27 US US06/867,520 patent/US4778701A/en not_active Expired - Lifetime
-
1987
- 1987-05-11 CA CA000536844A patent/CA1286970C/en not_active Expired - Fee Related
- 1987-05-12 AU AU72741/87A patent/AU596177B2/en not_active Ceased
- 1987-05-18 MX MX006523A patent/MX165264B/en unknown
- 1987-05-26 KR KR1019870005190A patent/KR950005337B1/en active IP Right Grant
- 1987-05-26 JP JP62129575A patent/JP2643148B2/en not_active Expired - Fee Related
- 1987-05-27 ES ES198787304698T patent/ES2030061T3/en not_active Expired - Lifetime
- 1987-05-27 DE DE8787304698T patent/DE3777244D1/en not_active Expired - Lifetime
- 1987-05-27 EP EP87304698A patent/EP0247855B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0247855B1 (en) | 1992-03-11 |
| MX165264B (en) | 1992-11-04 |
| ES2030061T3 (en) | 1992-10-16 |
| US4778701A (en) | 1988-10-18 |
| AU596177B2 (en) | 1990-04-26 |
| EP0247855A2 (en) | 1987-12-02 |
| EP0247855A3 (en) | 1988-10-12 |
| AU7274187A (en) | 1987-12-03 |
| DE3777244D1 (en) | 1992-04-16 |
| JPS62288677A (en) | 1987-12-15 |
| KR870010812A (en) | 1987-12-18 |
| KR950005337B1 (en) | 1995-05-23 |
| JP2643148B2 (en) | 1997-08-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |