CA2028017A1 - Disposable diaper with thermoplastic material anchored hook fastener portion - Google Patents
Disposable diaper with thermoplastic material anchored hook fastener portionInfo
- Publication number
- CA2028017A1 CA2028017A1 CA002028017A CA2028017A CA2028017A1 CA 2028017 A1 CA2028017 A1 CA 2028017A1 CA 002028017 A CA002028017 A CA 002028017A CA 2028017 A CA2028017 A CA 2028017A CA 2028017 A1 CA2028017 A1 CA 2028017A1
- Authority
- CA
- Canada
- Prior art keywords
- backing
- portions
- thermoplastic material
- warp
- layer
- 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.)
- Abandoned
Links
- 239000012815 thermoplastic material Substances 0.000 title claims abstract description 49
- 239000004831 Hot glue Substances 0.000 claims abstract description 9
- 239000000758 substrate Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 18
- 239000000853 adhesive Substances 0.000 claims description 15
- 230000001070 adhesive effect Effects 0.000 claims description 15
- 238000009941 weaving Methods 0.000 claims description 14
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 11
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 11
- -1 polypropylene Polymers 0.000 claims description 10
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 229920000728 polyester Polymers 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 238000007757 hot melt coating Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000013175 Crataegus laevigata Nutrition 0.000 description 1
- 229920003345 Elvax® Polymers 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B18/00—Fasteners of the touch-and-close type; Making such fasteners
- A44B18/0069—Details
- A44B18/0073—Attaching means
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B18/00—Fasteners of the touch-and-close type; Making such fasteners
- A44B18/0023—Woven or knitted fasteners
- A44B18/0038—Male or hook elements
- A44B18/0042—Male or hook elements of a mushroom type
-
- 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
- A61F13/62—Mechanical fastening means, ; Fabric strip fastener elements, e.g. hook and loop
- A61F13/622—Fabric strip fastener elements, e.g. hook and loop
- A61F13/625—Fabric strip fastener elements, e.g. hook and loop characterised by the hook
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S128/00—Surgery
- Y10S128/15—Hook and loop type fastener
Abstract
Abstract of the Disclosure A hook fastener portion for use in a hook and loop fastener that has a woven backing with portions of pile monofilaments projecting from its front surface providing hooks adapted for making releasable engagement with loops of the fastener. Only a layer of thermoplastic material along a rear surface of the backing and the mechanical engagement of the portions of the pile monofilaments woven into the backing anchor the monofilaments in the backing, and that layer of thermoplastic material can be a hot melt adhesive used to adhere the hook fastener portion to a substrate.
Description
~02~01l7 Disposable Diaper with ~hermoplastic Material Anchored Hook Fastener Portion 5 Technical Field The present invention relates to disposable diapers including hook and loop fasteners, and in particular to the hook portions of such fasteners.
10 ~ackground Art Disposable diapers including hook and loop fasteners for fastening togethlr portions of the diapers to secure them to individuals are well known in the art. V.S.
Patents Nos . 4,410,327 and 4,568,342 provide illustrative examples. Also it is well known to use hook fastener portions in such fasteners that have a woven backing and a plurali~y of pile monofilaments with portions woven into the backing and portions projecting from a front surface of the backing that have distal end portions adapted for releasable engagement with loops included in the fasteners (e.g., by forming arcuate hook portions or mushroom shaped heads at their ends), and a layer of adhesive along a rear surface of the backing adhering the hook fastener portions in place.
Heretofore, however, such ~oven hook fastener portions have been made in a continuous strip by a method including a weaving step to form the woven backing with portions of the pile monofilaments woven therein, a hook forming step in which arcuate hook portions or heads are formed on the projecting portions of the pile monofilaments, an autoclave step in which the woven fasteners are exposed to steam in an autoclave to shrink the backing, a binder coating step in which a coating of a liquid binder material for adhering together the warp and weft yarns and the woven in portions of the pile monofilaments is applied to the backing, and a drylng step that takes about 48 hours in which the binding material on ~02~17 the backing is dried and cured; after ~lhich an adhesive for adhering the backing in place ma~ be applied along the rear surface of the backing and the strip ma~ be slit and/or cut to provide a hook fastener portion of a desired size for its intended application. While this method has produced a very suitable hook fastener portion which can withstand being opened and closed many times and being washed as is required for many uses, the number of steps it entails, and the batch nature of many of the steps it includes adds significan~ly to its cost. Thus, the hook fastener portion produced by that method is very high priced compared to hook fastener portions made by other methods such as continuous molding techniques that, while not of the high quality of the woven hook fastener portions made by the method described above, are still quite adequate for use in fasteners intended for certain uses, such as on disposable garments (e.g., disposable diapers) where a limited number of engagements and disengagements of the fasteners are anticipated.
Disclosure of Invention _ ~ he present invention provides a hook fastener portion with a woven backing that is significantly less expensive to make than the hook fastener portions with woven backings made by the method described above, and is ~uite adequate for use in fasteners intended for certain uses, such as on disposable garments (e.g., disposable diapers) where a limited number of engagements and disengagements of the fasteners are antisipated.
~ccordin~ to the present invention there is provided an inexpensive hook fastener portion adapted for use in hook and loop fastener means, such as on a disposable diaper of the type including a laminate having first and second opposite ends, and the hook and loop fastener means for fastening together portions o~ th~
lamlnate to ~ecure the diaper to an indivldual lncluding loop fastener portion means adjacent the first end of the ~ 0 ~ 7 laminate comprising a multiplicity of loops, and the hook fastener portion at the second end of the laminate. The hook fastener portion comprises a plurality of warp yarns, a plurality of weft yarns interwoven with the warp yarns to 5 form with the warp yarns a woven backing having front and rear major surfaces, a plurali~y of pile monofilaments having portions woven into the backing and portions projecting from the front surface of the backing and having distal end portions adapted for making releasable engagement with the loops, and a layer of thermoplastic material along the rear surface of the backing. Only the layer of thermoplastic material and the mechanical engagement of the portions of the pile monofilaments woven into the backing with the warp and weft yarns anchor the monofilaments in the backing. Also, the layer o~
thermoplastic material can serve as or be a hot melt adhesive adapted to adhere the hook fastener portion to a substrate such as the laminate of the diaper.
Preferably the pile monofilaments are of larger diameter than the warp and weft ya.ns and include portions passing around weft yarns that protrude along the rear surface of the woven backing, and the layer of thermoplastic material is discontinuous and formed of discrete layer portions located around the protruding portions of the pile monofilaments and adhering the protruding portions of the pile monofilaments to adjacent portions o~ the warp and weft yarns.
When the hook fastener portion is intended to be attached to a polyethylene sheet included in the laminate of a disposable diaper, the layer of thermoplastic material is pre~erably an ethylene vinyl acetate hot melt adhesive weighing in the range of 2 to 12 grains per 4 inch by fi inch area, and preferably weighing at least 4~5 grains per 4 inch by 6 inch area, with 5.5 grains per 4 inch by 6 inch area being a preferred weight which is selected as a compromise that provides both ~irm adhesion of the hook fastener portion to the layer of polyethylene, and low cost 202~7 for the layer of hot melt adhesive. Such hook fastener portions can be easily attached to the polyethylene sheet using moderate pressure and conventional heat application or ul~rasonic attaching techniques.
Also, when the hook fastener portion is intended to be used as part o~ the fastener for a disposable diaper, preferably the weft and warp yarns are of polyester (e.g., 150-34 denier polyester) and the pile monofilaments are of polypropylene (e.g., 0.004 to 0.010 inch diameter); and the backing of the hook fastener portion has in the range of 28 to 42 weft yarns crossing the warp yarns per inch of length of the warp yarns, with about 32 weft yarns crossing the warp yarns per inch of length of the warp yarns being preferred. It expected that such hook fastener portions having even lower numbers of weft yarns may be useful for certain purposes.
Brief Descriptlon of Drawing The present invention will be further de~cribed with reference to the accompanying drawing wherein like reference numerals refer to like parts in the several views, and wherein:
Figure 1 is a perspective view o a disposable diaper including hook fastener portions according to the present invention;
Figure 2 is a much enlarged fragmentary perspective view of one of the hook fastener portions of Figure 1 before it is attached to the diaper of Figure 1;
Figure 3 is an enlarged photographic fragmentary top view of one of the hook fastener portions of Figure 1 before it is attached to the diaper of Figure 1;
Figure 4 is an enlarged photographic fragmentary bottom view of one of the hook fastener portions of Figure 1 before it is attached to the diaper of Figure 1; and Figure 5 is a schematic view of a method for making the hook fastener portions of ~igure 1.
~n~o ~ 7 Detailed Descriptlon Referring now to the drawing, there is shown in Figure 1 a disposable diaper 10 includin~ two hook fastener portions according to the present invention gen~rally 5 designated by the reference numeral 12.
Generally the disposable diaper 10 includes a laminate 14 having first and second opposite ends, and hook and loop fastener means for fastening together portions of the laminate 14 to secure the diaper 10 to an individual.
The Eastener means includes loop fastener portion means adjacent the first end of the laminate that could be provided by a portion of the laminate, but as illustrated comprises a loop fastener portion 15 adhered to the laminate 14 and having a multiplicity of loops projecting from its surface opposite the laminate 14; and the two spaced hook fastener portions 12 at the second end of the laminate 14.
As is best seen in Figures 2 and 3, the hook fastener portion 12 comprises a plurality of generally parallel warp yarns 16 (e.g., 156 warp yarns per inch), a plurality of generally parallel weft yarns 18 interwoven with ths warp yarns 16 at right angles thereto (e.g., 28 to 42 and preferably 32 weft yarns per inch measured alonq the warp yarns) to form with the warp yarns a woven backing 20 having front and rear major surfaces 21 and 22, and a plurality of pile monofilaments 24 (e.g., twenty four 0.004 to 0.010 inch diameter polypropylene monofilaments 24 per inch of width measured along the weft yarns 18). The pile monofilaments 24 have portions woven in a l'plane weave"
manner shown in Figures 2, 3 and 4 into the backing 20, in which "plane weave'~ manner the woven in portions of the monofilaments 24 pass over 1 and under 2 weft yarns 18 and extend parallel to the warp yarns 16. The pile monofilaments 24 also include portions projecting from the front surface 21 of the backing and having gene~ally semi cyllndrical or mushroom shaped heads 25 at their dlstal ends te.g., 112 to 168 and preferably 128 projecting -6- 2~2~
portions per 6quare inch). Also lnclu~ed in the hook fastener portion 12 is a discontinuous layer 26 of thermoplastic material along the rear surface 22 o~ the backing 20 with only the layer 26 of thermoplastic material 5 and the mechanical engagement of the portions of the pile monofilaments 24 woven into the backing 20 around and intertwined with the warp and weft yarns 16 and 18 anchoring the pile monofilaments 24 in the backing 20, and the layer 26 of thermoplastic material also providing means for adhering the fastener portion 12 to the laminate 14.
As can best be seen in Figure 4, the pile mono~ilaments 24 are of substantially larger diameter than the stranded warp and weft yarns 16 and lR and include portions 27 passing around weft yarns 18 that protrude along the rear surface 22 of the woven backing 20 because o~ their larger diameter and stiffness and because they remain round while the yards can flatten as they pass around another yarn. The layer of thermoplastic material 26 is discontinuous and formed of discrete layer portions 2a that are located around the protruding portions 27 of the pile monofilaments 24 and adhere the protruding portions 27 of the pile monofilaments 24 to adjacent portions of the warp and weft yarns 16 and 18.
Although other thermoplastic materials such as "JET ~ELT" hot melt adhesives commercially designated 2~ 3762LM and 3792LM and available from Minnesota Mining and Manufacturing Company, St. Paul, Minnesota or the hot melt adhesive commercially designated 7199D available from Bostic Division, Middleton, Massachusetts, could be used as the layer 26 of thermoplastic material; a presently preferred thermoplastic material or hot melt adhesive described in ~.S. Patent No. 4,710,190 (the content whereof is incorporated herein by reference) consists of 60 percent by weight of an ethylene vinyl acetate adhesive (e.g., the adhesive commercially designated "Elvax 210" available from E. I. duPont deNemours and Company, Wilmington, Delaware, and 40 percent by weight ~f a suitable tackifyer ~e.g.~ the 202~Q17 tackifyer commercially designated "Piccolyte HM-90"
available from Hercules Incorporated, Midwestern Region, Naperville, Illinois, to which total weight of that mixt~re is added 1 percent of an antioxidant (e.y., the antioxidant 5 commercially designated "Irganox 1010" available from Ciba-Geig~ Corporation, Hawthorne, New York.
Figure 5 illustrates a method according to the present invention ~or making the hook fastener portion 12.
Generally, that method includes the well known steps of weaving the warp yarns 16, wefl: yarns 18, and pile monofilaments 24 together to form from the woven backing 20 with portions of the pile monoiilaments 24 pro~ecting from its front surface 21 using a weaving machine 30 (e.g., either a model NF 53/66 weaving machine available from Jacob Muller of America, Charlotte, North Carolina which forms the projecting portions of the pile monofilaments 24 into loops projecting from the front surface 21 of the backing 20, or a model Ns 40 machine also available from Jacob Muller of America which simultaneously forms two parallel backings 20 with separate sets of warp and weft yarns 16 and 18, and weaves portions of a single set of pile monofilaments 24 into both backings 20 in a plane weave manner with portions of those monofilaments extending at right angles to and between opposed front surfaces 21 of the backings 20); and heating the projecting portions of the pile monofilaments 24 to form the heads 25 on their distal ends. Such head 25 forming when the baoking 20 is formed by the model NF 53/~6 weaving machine described above and illustrated in Figure 5 is done by heating the center of the loops with a heated wire 32 so that the loops each will separate into two projecting portions of the monofilament 24 each with a head 25 at its distal end; and such head 25 forming when the backing 20 is formed by the model NB ~0 weaving machine described above is done by heating the central parts of the portions of the monofilaments 24 extending between the backings 20 with a heated wire so that each portion will separate into two 2 0 2 ~ O ~ rit projecting portions of the mono~ilament 24 (one projecting from each backing 20), each with a head 25 at its distal end. The method then includes the further step o coating a layer 26 of thermoplastic material or hot melt adhesive 5 along the rear surface 22 ~f the backing 20 so that only the layer 26 of thermoplastic material and the mechanical engagement of the portions of the pile monofilaments 24 woven into the backing 20 with the warp and weft yarns 16 and 18 anchor the monofilaments 24 in the hacking 20. This coating step is performed by passing the woven backing 20 with the headed portions of the pile monofilarnents 29 through a hot melt coating device 34, ~e.g., made using the Model GRO72X1 hot melt pump ancl die assembly available from Meltex Corporation, Peachtree City, Georgia 30269), which can advantageously be done as that structllre leaves the 5 weaving machine 30 so that the weaving, heating and coating steps described above are done continuously on the same production line.
Preferably, as illustrated, that hot melt coating device 34 comprises a rubber back up roll 36 around which the backing 20 passes with~its front surface 21 adjacent the back up roll 36, and an extrusion die 38 having a guide surface 39 and an elongate slot 40 extending transversely the entire width of the backing 20 along the rear surface 22 of the backing 20 as the backing moves across the die 38. Thermoplastic material from which the layer 26 is formed is pumped to the die 38 and through the slot 40 from a heated pall unloading pump 42 included in the hot melt pump and die asembly at a rate related to the speed of movement of the backing 20 across the die 38. The portions 27 of the pile monofilaments 24 that protrude along the rear surface 22 of the backing 20 wipe away the thermoplastic material exiting from the outlet slot 40 of the die 38 and cause the layer 26 of thermoplastic material to be discontinuous and formed of the discrete laye~
portions 28 located around the protrud~ng portions 27 of the pile monofilaments 24. From the die 38 the rear 20~0~7 g surface 22 of the backlng 20 passes through a nip between the roller 36 and a silicone rubber coated first water cooled roller ~4 and around the roller 44 so that the layer portions 28 cool, solidify, and adhere the protruding portions 27 of the pile monofilaments 24 to adjacent portions of the warp and weft yarns 16 and 1~. The nipped rollers 36 and 44 engage the adhesive coated backing 20, and one of them is driven to move the backing 20 through the hot melt coating device 34. The front surface ~1 of the adhesive coated backin~ 20 then passes around a silicone rubber surface of a second water cooled roller ~6 after which it may be slit and cut to length (not shown) to provide a ~lultiplicity of the hook fastener portions 12.
Subsequently, the hook fastener portions 12 may be attached to the laminate 14 of a disposable diaper 10 through the application of heat and pressure.
The present invention has now been described with reference to one embodiment thereof. It will be apparent to those skilled in the art that many changes can be made in the embodiment described without departing from the scope of the present invention. Thus the scope of the present invention should not be limited to the structure described in this application, but only by structures described by the language of the claims and the equivalents of those structures.
10 ~ackground Art Disposable diapers including hook and loop fasteners for fastening togethlr portions of the diapers to secure them to individuals are well known in the art. V.S.
Patents Nos . 4,410,327 and 4,568,342 provide illustrative examples. Also it is well known to use hook fastener portions in such fasteners that have a woven backing and a plurali~y of pile monofilaments with portions woven into the backing and portions projecting from a front surface of the backing that have distal end portions adapted for releasable engagement with loops included in the fasteners (e.g., by forming arcuate hook portions or mushroom shaped heads at their ends), and a layer of adhesive along a rear surface of the backing adhering the hook fastener portions in place.
Heretofore, however, such ~oven hook fastener portions have been made in a continuous strip by a method including a weaving step to form the woven backing with portions of the pile monofilaments woven therein, a hook forming step in which arcuate hook portions or heads are formed on the projecting portions of the pile monofilaments, an autoclave step in which the woven fasteners are exposed to steam in an autoclave to shrink the backing, a binder coating step in which a coating of a liquid binder material for adhering together the warp and weft yarns and the woven in portions of the pile monofilaments is applied to the backing, and a drylng step that takes about 48 hours in which the binding material on ~02~17 the backing is dried and cured; after ~lhich an adhesive for adhering the backing in place ma~ be applied along the rear surface of the backing and the strip ma~ be slit and/or cut to provide a hook fastener portion of a desired size for its intended application. While this method has produced a very suitable hook fastener portion which can withstand being opened and closed many times and being washed as is required for many uses, the number of steps it entails, and the batch nature of many of the steps it includes adds significan~ly to its cost. Thus, the hook fastener portion produced by that method is very high priced compared to hook fastener portions made by other methods such as continuous molding techniques that, while not of the high quality of the woven hook fastener portions made by the method described above, are still quite adequate for use in fasteners intended for certain uses, such as on disposable garments (e.g., disposable diapers) where a limited number of engagements and disengagements of the fasteners are anticipated.
Disclosure of Invention _ ~ he present invention provides a hook fastener portion with a woven backing that is significantly less expensive to make than the hook fastener portions with woven backings made by the method described above, and is ~uite adequate for use in fasteners intended for certain uses, such as on disposable garments (e.g., disposable diapers) where a limited number of engagements and disengagements of the fasteners are antisipated.
~ccordin~ to the present invention there is provided an inexpensive hook fastener portion adapted for use in hook and loop fastener means, such as on a disposable diaper of the type including a laminate having first and second opposite ends, and the hook and loop fastener means for fastening together portions o~ th~
lamlnate to ~ecure the diaper to an indivldual lncluding loop fastener portion means adjacent the first end of the ~ 0 ~ 7 laminate comprising a multiplicity of loops, and the hook fastener portion at the second end of the laminate. The hook fastener portion comprises a plurality of warp yarns, a plurality of weft yarns interwoven with the warp yarns to 5 form with the warp yarns a woven backing having front and rear major surfaces, a plurali~y of pile monofilaments having portions woven into the backing and portions projecting from the front surface of the backing and having distal end portions adapted for making releasable engagement with the loops, and a layer of thermoplastic material along the rear surface of the backing. Only the layer of thermoplastic material and the mechanical engagement of the portions of the pile monofilaments woven into the backing with the warp and weft yarns anchor the monofilaments in the backing. Also, the layer o~
thermoplastic material can serve as or be a hot melt adhesive adapted to adhere the hook fastener portion to a substrate such as the laminate of the diaper.
Preferably the pile monofilaments are of larger diameter than the warp and weft ya.ns and include portions passing around weft yarns that protrude along the rear surface of the woven backing, and the layer of thermoplastic material is discontinuous and formed of discrete layer portions located around the protruding portions of the pile monofilaments and adhering the protruding portions of the pile monofilaments to adjacent portions o~ the warp and weft yarns.
When the hook fastener portion is intended to be attached to a polyethylene sheet included in the laminate of a disposable diaper, the layer of thermoplastic material is pre~erably an ethylene vinyl acetate hot melt adhesive weighing in the range of 2 to 12 grains per 4 inch by fi inch area, and preferably weighing at least 4~5 grains per 4 inch by 6 inch area, with 5.5 grains per 4 inch by 6 inch area being a preferred weight which is selected as a compromise that provides both ~irm adhesion of the hook fastener portion to the layer of polyethylene, and low cost 202~7 for the layer of hot melt adhesive. Such hook fastener portions can be easily attached to the polyethylene sheet using moderate pressure and conventional heat application or ul~rasonic attaching techniques.
Also, when the hook fastener portion is intended to be used as part o~ the fastener for a disposable diaper, preferably the weft and warp yarns are of polyester (e.g., 150-34 denier polyester) and the pile monofilaments are of polypropylene (e.g., 0.004 to 0.010 inch diameter); and the backing of the hook fastener portion has in the range of 28 to 42 weft yarns crossing the warp yarns per inch of length of the warp yarns, with about 32 weft yarns crossing the warp yarns per inch of length of the warp yarns being preferred. It expected that such hook fastener portions having even lower numbers of weft yarns may be useful for certain purposes.
Brief Descriptlon of Drawing The present invention will be further de~cribed with reference to the accompanying drawing wherein like reference numerals refer to like parts in the several views, and wherein:
Figure 1 is a perspective view o a disposable diaper including hook fastener portions according to the present invention;
Figure 2 is a much enlarged fragmentary perspective view of one of the hook fastener portions of Figure 1 before it is attached to the diaper of Figure 1;
Figure 3 is an enlarged photographic fragmentary top view of one of the hook fastener portions of Figure 1 before it is attached to the diaper of Figure 1;
Figure 4 is an enlarged photographic fragmentary bottom view of one of the hook fastener portions of Figure 1 before it is attached to the diaper of Figure 1; and Figure 5 is a schematic view of a method for making the hook fastener portions of ~igure 1.
~n~o ~ 7 Detailed Descriptlon Referring now to the drawing, there is shown in Figure 1 a disposable diaper 10 includin~ two hook fastener portions according to the present invention gen~rally 5 designated by the reference numeral 12.
Generally the disposable diaper 10 includes a laminate 14 having first and second opposite ends, and hook and loop fastener means for fastening together portions of the laminate 14 to secure the diaper 10 to an individual.
The Eastener means includes loop fastener portion means adjacent the first end of the laminate that could be provided by a portion of the laminate, but as illustrated comprises a loop fastener portion 15 adhered to the laminate 14 and having a multiplicity of loops projecting from its surface opposite the laminate 14; and the two spaced hook fastener portions 12 at the second end of the laminate 14.
As is best seen in Figures 2 and 3, the hook fastener portion 12 comprises a plurality of generally parallel warp yarns 16 (e.g., 156 warp yarns per inch), a plurality of generally parallel weft yarns 18 interwoven with ths warp yarns 16 at right angles thereto (e.g., 28 to 42 and preferably 32 weft yarns per inch measured alonq the warp yarns) to form with the warp yarns a woven backing 20 having front and rear major surfaces 21 and 22, and a plurality of pile monofilaments 24 (e.g., twenty four 0.004 to 0.010 inch diameter polypropylene monofilaments 24 per inch of width measured along the weft yarns 18). The pile monofilaments 24 have portions woven in a l'plane weave"
manner shown in Figures 2, 3 and 4 into the backing 20, in which "plane weave'~ manner the woven in portions of the monofilaments 24 pass over 1 and under 2 weft yarns 18 and extend parallel to the warp yarns 16. The pile monofilaments 24 also include portions projecting from the front surface 21 of the backing and having gene~ally semi cyllndrical or mushroom shaped heads 25 at their dlstal ends te.g., 112 to 168 and preferably 128 projecting -6- 2~2~
portions per 6quare inch). Also lnclu~ed in the hook fastener portion 12 is a discontinuous layer 26 of thermoplastic material along the rear surface 22 o~ the backing 20 with only the layer 26 of thermoplastic material 5 and the mechanical engagement of the portions of the pile monofilaments 24 woven into the backing 20 around and intertwined with the warp and weft yarns 16 and 18 anchoring the pile monofilaments 24 in the backing 20, and the layer 26 of thermoplastic material also providing means for adhering the fastener portion 12 to the laminate 14.
As can best be seen in Figure 4, the pile mono~ilaments 24 are of substantially larger diameter than the stranded warp and weft yarns 16 and lR and include portions 27 passing around weft yarns 18 that protrude along the rear surface 22 of the woven backing 20 because o~ their larger diameter and stiffness and because they remain round while the yards can flatten as they pass around another yarn. The layer of thermoplastic material 26 is discontinuous and formed of discrete layer portions 2a that are located around the protruding portions 27 of the pile monofilaments 24 and adhere the protruding portions 27 of the pile monofilaments 24 to adjacent portions of the warp and weft yarns 16 and 18.
Although other thermoplastic materials such as "JET ~ELT" hot melt adhesives commercially designated 2~ 3762LM and 3792LM and available from Minnesota Mining and Manufacturing Company, St. Paul, Minnesota or the hot melt adhesive commercially designated 7199D available from Bostic Division, Middleton, Massachusetts, could be used as the layer 26 of thermoplastic material; a presently preferred thermoplastic material or hot melt adhesive described in ~.S. Patent No. 4,710,190 (the content whereof is incorporated herein by reference) consists of 60 percent by weight of an ethylene vinyl acetate adhesive (e.g., the adhesive commercially designated "Elvax 210" available from E. I. duPont deNemours and Company, Wilmington, Delaware, and 40 percent by weight ~f a suitable tackifyer ~e.g.~ the 202~Q17 tackifyer commercially designated "Piccolyte HM-90"
available from Hercules Incorporated, Midwestern Region, Naperville, Illinois, to which total weight of that mixt~re is added 1 percent of an antioxidant (e.y., the antioxidant 5 commercially designated "Irganox 1010" available from Ciba-Geig~ Corporation, Hawthorne, New York.
Figure 5 illustrates a method according to the present invention ~or making the hook fastener portion 12.
Generally, that method includes the well known steps of weaving the warp yarns 16, wefl: yarns 18, and pile monofilaments 24 together to form from the woven backing 20 with portions of the pile monoiilaments 24 pro~ecting from its front surface 21 using a weaving machine 30 (e.g., either a model NF 53/66 weaving machine available from Jacob Muller of America, Charlotte, North Carolina which forms the projecting portions of the pile monofilaments 24 into loops projecting from the front surface 21 of the backing 20, or a model Ns 40 machine also available from Jacob Muller of America which simultaneously forms two parallel backings 20 with separate sets of warp and weft yarns 16 and 18, and weaves portions of a single set of pile monofilaments 24 into both backings 20 in a plane weave manner with portions of those monofilaments extending at right angles to and between opposed front surfaces 21 of the backings 20); and heating the projecting portions of the pile monofilaments 24 to form the heads 25 on their distal ends. Such head 25 forming when the baoking 20 is formed by the model NF 53/~6 weaving machine described above and illustrated in Figure 5 is done by heating the center of the loops with a heated wire 32 so that the loops each will separate into two projecting portions of the monofilament 24 each with a head 25 at its distal end; and such head 25 forming when the backing 20 is formed by the model NB ~0 weaving machine described above is done by heating the central parts of the portions of the monofilaments 24 extending between the backings 20 with a heated wire so that each portion will separate into two 2 0 2 ~ O ~ rit projecting portions of the mono~ilament 24 (one projecting from each backing 20), each with a head 25 at its distal end. The method then includes the further step o coating a layer 26 of thermoplastic material or hot melt adhesive 5 along the rear surface 22 ~f the backing 20 so that only the layer 26 of thermoplastic material and the mechanical engagement of the portions of the pile monofilaments 24 woven into the backing 20 with the warp and weft yarns 16 and 18 anchor the monofilaments 24 in the hacking 20. This coating step is performed by passing the woven backing 20 with the headed portions of the pile monofilarnents 29 through a hot melt coating device 34, ~e.g., made using the Model GRO72X1 hot melt pump ancl die assembly available from Meltex Corporation, Peachtree City, Georgia 30269), which can advantageously be done as that structllre leaves the 5 weaving machine 30 so that the weaving, heating and coating steps described above are done continuously on the same production line.
Preferably, as illustrated, that hot melt coating device 34 comprises a rubber back up roll 36 around which the backing 20 passes with~its front surface 21 adjacent the back up roll 36, and an extrusion die 38 having a guide surface 39 and an elongate slot 40 extending transversely the entire width of the backing 20 along the rear surface 22 of the backing 20 as the backing moves across the die 38. Thermoplastic material from which the layer 26 is formed is pumped to the die 38 and through the slot 40 from a heated pall unloading pump 42 included in the hot melt pump and die asembly at a rate related to the speed of movement of the backing 20 across the die 38. The portions 27 of the pile monofilaments 24 that protrude along the rear surface 22 of the backing 20 wipe away the thermoplastic material exiting from the outlet slot 40 of the die 38 and cause the layer 26 of thermoplastic material to be discontinuous and formed of the discrete laye~
portions 28 located around the protrud~ng portions 27 of the pile monofilaments 24. From the die 38 the rear 20~0~7 g surface 22 of the backlng 20 passes through a nip between the roller 36 and a silicone rubber coated first water cooled roller ~4 and around the roller 44 so that the layer portions 28 cool, solidify, and adhere the protruding portions 27 of the pile monofilaments 24 to adjacent portions of the warp and weft yarns 16 and 1~. The nipped rollers 36 and 44 engage the adhesive coated backing 20, and one of them is driven to move the backing 20 through the hot melt coating device 34. The front surface ~1 of the adhesive coated backin~ 20 then passes around a silicone rubber surface of a second water cooled roller ~6 after which it may be slit and cut to length (not shown) to provide a ~lultiplicity of the hook fastener portions 12.
Subsequently, the hook fastener portions 12 may be attached to the laminate 14 of a disposable diaper 10 through the application of heat and pressure.
The present invention has now been described with reference to one embodiment thereof. It will be apparent to those skilled in the art that many changes can be made in the embodiment described without departing from the scope of the present invention. Thus the scope of the present invention should not be limited to the structure described in this application, but only by structures described by the language of the claims and the equivalents of those structures.
Claims (22)
1. A disposable diaper including a laminate having first and second opposite ends, and hook and loop fastener means for fastening together portions of said laminate to secure said diaper to an individual, said fastener means including loop fastener portion means adjacent the first end of said laminate comprising a multiplicity of loops, and hook fastener portion means at the second end of said laminated said hook fastener portion comprising a plurality of warp yarns, a plurality of weft yarns interwoven with said warp yarns to form with said warp yarns a woven backing having front and rear major surfaces, a plurality of pile monofilaments having portions woven into said backing and portions projecting from the front surface of said backing and having distal end portions adapted for making releasable engagement with said loops, and a layer of thermoplastic material along the rear surface of said backing, with only said layer of thermoplastic material and the mechanical engagement of said portions of said pile monofilaments woven into said backing with said warp and weft yarns anchoring said monofilaments in said backing, and said layer of thermoplastic material adhering said hook fastener portion to said laminate.
2. A disposable diaper according to claim 1 wherein said layer of thermoplastic material is discontinuous along said rear surface, is of an ethylene vinyl acetate adhesive, and weighs at least 4.5 grains per 4 inch by 6 inch area.
3. A disposable diaper according to claim 1 wherein said layer of thermoplastic material is of an ethylene vinyl acetate adhesive and weighs in the range of 2 to 12 grains per 4 inch by 6 inch area.
4. A disposable diaper according to claim 1 wherein said layer of thermoplastic material is of an ethylene vinyl acetate adhesive and weighs about 5.5 grains per 4 inch by 6 inch area.
5. A disposable diaper according to claim 1 wherein said pile mono-filaments are of 250 to 600 denier polypropylene, said warp and weft yarns are 150-34 denier polyester, and said backing has in the range of 28 to 42 weft yarns crossing said warp yarns per 2.54 centimeters (1 inch) o-f length of said warp yarns, and said layer of thermoplastic material is of ethylene vinyl acetate adhesive and weighs in the range of 2 to 12 grains per 10.16 centimeter by 15.24 centimeter (4 inch by 6 inch) area.
6. A disposable diaper according to claim 1 wherein said backing has about 32 weft yarns crossing said warp yarns per 2.54 centimeter (1 inch) of length of said warp yarns.
7. A disposable diaper according to claim 1 wherein said weft and warp yarns are of polyester, and said pile monofilaments are of polypropylene.
8. An inexpensive hook fastener portion adapted for use in hook and loop fastener means, said hook fastener portion comprising a plurality of warp yarns, a plurality of weft yarns interwoven with said warp yarns to form with said warp yarns a woven backing having front and rear major surfaces, a plurality of pile monofilaments having portions woven into said backing and portions projecting from the front surface of said backing and having heads at their distal ends adapted for releasable engagement with loops, and a layer of thermoplastic material along the rear surface of said backing, with only said layer of thermoplastic material and the mechanical engagement of said portions of said pile monofilaments woven into said backing with said warp and weft yarns anchoring said monofilaments in said backing.
9. A hook fastener portion according to claim 8 wherein said pile monofilaments are of larger diameter than said warp and weft yarns and include portions passing around weft yarns that protrude along the rear surface of said woven backing, and said layer of thermoplastic material is discontinuous and formed of discrete layer portions located around the protruding portions of said pile monofilaments and adhering the protruding portions of the pile monofilaments to adjacent portions of the warp and weft yarns.
10. A hook fastener portion according to claim 9 wherein said pile monofilaments are of 250 to 600 denier polypropylene, said warp and weft yarns are 150-34 denier polyester, and said layer of thermoplastic material is of ethylene vinyl acetate adhesive and weighs at least 4.5 grains per 10.16 centimeter by 15.24 centimeter (4 inch by 6 inch) area.
11. A hook fastener portion according to claim 8 wherein said layer of thermoplastic material is of ethylene vinyl acetate adhesive and weighs at least 4.5 grains per 10.16 centimeter by 15.24 centimeter (4 inch by 6 inch) area.
12. A hook fastener portion according to claim 8 wherein said layer of thermoplastic material is of ethylene vinyl acetate adhesive and weighs in the range of 2 to 12 grains per 10.16 centimeter by 15.24 centimeter (4 inch by 6 inch) area.
13. A hook fastener portion according to claim 8 wherein said layer of thermoplastic material is an ethylene vinyl acetate adhesive weighing about 5.5 grains per 10.16 centimeter by 15.24 centimeter (4 inch by 6 inch) area.
14. A hook fastener portion according to claim 8 wherein said pile monofilaments are of 250 to 600 denier polypropylene, said warp and weft yarns are 150-34 denier polyester, and said backing has in the range of 28 to 42 weft yarns crossing said warp yarns per inch of length of said warp yarns, and said layer of thermoplastic material is an ethylene vinyl acetate adhesive weighing in the range of 2 to 12 grains per 10.16 centimeter by 15.24 centimeter (4 inch by 6 inch) area.
15. A hook fastener portion according to claim 12 wherein said backing has about 32 weft yarns crossing said warp yarns per 2,54 centimeter (1 inch) of length of said warp yarns.
16. A hook fastener portion according to claim 8 wherein said weft yarns and said warp yarns are of polyester, and said pile monofilaments are of polypropylene.
17. A hook fastener portion according to claim 8 wherein said layer of thermoplastic material is a hot melt adhesive being adapted to adhere said hook fastener portion to a substrate.
18. A method for making a hook fastener portion and attaching the hook fastener portion to a substrate, said method comprising the steps of weaving warp yarns, weft yarns, and pile monofilaments together to form from the warp and weft yarns and portions of the pile monofilaments a woven backing with front and rear major surfaces and portions of the pile monofilaments projecting from the front surface of the woven backing;
adapting the projecting portions of the pile monofilaments to make releasable engagement with loops;
coating a layer of thermoplastic material along the rear surface of the backing so that only the layer of thermoplastic material and the mechanical engagement of the portions of the pile monofilaments woven into the backing with the warp and weft yarns anchor the monofilaments in the backing; and applying heat and pressure to soften and adhere the layer of thermoplastic material to a substrate.
adapting the projecting portions of the pile monofilaments to make releasable engagement with loops;
coating a layer of thermoplastic material along the rear surface of the backing so that only the layer of thermoplastic material and the mechanical engagement of the portions of the pile monofilaments woven into the backing with the warp and weft yarns anchor the monofilaments in the backing; and applying heat and pressure to soften and adhere the layer of thermoplastic material to a substrate.
19. A method according to claim 18 wherein said weaving step is done using pile monofilaments that are of larger diameter than the warp and weft yarns to provide portions of the pile monofilaments passing around weft yarns that protrude along the rear surface of the woven backing, said coating step comprises providing a die having a generally planar guide surface and an elongate outlet opening through the guide surface, feeding the thermoplastic material at a predetermined rate through the outlet opening, and moving the rear surface of the woven backing along the guide surface and over the outlet opening at a predetermined rate of movement related to the rate of feeding of the thermoplastic material and with the outlet opening extending transverse to the direction of movement of the woven backing so that the protruding portions of the of the pile monofilaments wipe the thermoplastic material from the outlet opening and cause the layer of thermoplastic material to be discontinuous and formed of discrete layer portions located around the protruding portions of the pile monofilaments that adhere the protruding portions of the pile monofilaments to adjacent portions of the warp and weft yarns.
20. A method according to claim 18 wherein said weaving, heating and coating steps are done continuously on the same production line.
21. A method for making a hook fastener portion comprising the steps of weaving warp yarns, weft yarns, and pile monofilaments together to form from the warp and weft yarns and portions of the pile monofilaments, a woven backing with front and rear major surfaces and portions of the pile monofilaments projecting from the front surface of the woven backing;
adapting the projecting portions of the pile monofilaments to make releasable engagement with loops; and coating a layer of thermoplastic material along the rear surface of the backing so that only the layer of thermoplastic material and the mechanical engagement of the portions of the pile monofilaments woven into the backing with the warp and weft yarns anchor the monofilaments in the backing;
said weaving, heating and coating steps being done continuously on the same production line.
adapting the projecting portions of the pile monofilaments to make releasable engagement with loops; and coating a layer of thermoplastic material along the rear surface of the backing so that only the layer of thermoplastic material and the mechanical engagement of the portions of the pile monofilaments woven into the backing with the warp and weft yarns anchor the monofilaments in the backing;
said weaving, heating and coating steps being done continuously on the same production line.
22. A method according to claim 21 wherein said weaving step is done using pile monofilaments that are of larger diameter than the warp and weft yarns to provide portions of the pile monofilaments passing around weft yarns that protrude along the rear surface of the woven backing, said coating step comprises providing a die having a generally planar guide surface and an elongate outlet opening through the guide surface, feeding the thermoplastic material at a predetermined rate through the outlet opening, and moving the rear surface of the woven backing along the guide surface and over the outlet opening at a predetermined rate of movement related to the rate of feeding of the thermoplastic material and with the outlet opening extending transverse to the direction of movement of the woven backing so that the protruding portions of the of the pile monofilaments wipe the thermoplastic material from the outlet opening and cause the layer of thermoplastic material to be discontinuous and formed of discrete layer portions located around the protruding portions of the pile monofilaments that adhere the protruding portions of the pile monofilaments to adjacent portions of the warp and weft yarns.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/438,693 US5100400A (en) | 1989-11-17 | 1989-11-17 | Disposable diaper with thermoplastic material anchored hook fastener portion |
| US438,693 | 1989-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2028017A1 true CA2028017A1 (en) | 1991-05-18 |
Family
ID=23741648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002028017A Abandoned CA2028017A1 (en) | 1989-11-17 | 1990-10-19 | Disposable diaper with thermoplastic material anchored hook fastener portion |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US5100400A (en) |
| EP (1) | EP0429249B1 (en) |
| JP (1) | JPH0817793B2 (en) |
| CA (1) | CA2028017A1 (en) |
| DE (1) | DE69003789T2 (en) |
| MX (1) | MX172232B (en) |
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| US5852855A (en) * | 1989-11-17 | 1998-12-29 | Minnesota Mining And Manufacturing Company | Disposable diaper with fastener |
| US5242646A (en) * | 1992-05-07 | 1993-09-07 | Minnesota Mining And Manufacturing Company | Method of making an interengaging fastener member |
| JP3392887B2 (en) * | 1992-10-16 | 2003-03-31 | ミネソタ マイニング アンド マニュファクチャリング カンパニー | Interlocking fastener |
| CA2158741C (en) | 1993-04-16 | 2004-01-27 | Kirit C. Mody | Loop fastener material storage/dispensing assembly |
| US5691026A (en) | 1993-07-27 | 1997-11-25 | Minnesota Mining And Manufacturing Company | Fastener member with a dual purpose cover sheet |
| US5691027A (en) | 1993-07-27 | 1997-11-25 | Minnesota Mining And Manufacturing Company | Fastener with a dual purpose cover sheet |
| JPH0739407A (en) * | 1993-07-28 | 1995-02-10 | Minnesota Mining & Mfg Co <3M> | Facing interlocking zipper member and zipper with said zipper member |
| JP3889452B2 (en) * | 1993-07-30 | 2007-03-07 | スリーエム カンパニー | Face-to-face engagement fastener member |
| JPH0742714A (en) * | 1993-08-05 | 1995-02-10 | Minnesota Mining & Mfg Co <3M> | Attaching member for protecting and decorating body and manufacture thereof |
| JPH0779810A (en) * | 1993-08-25 | 1995-03-28 | Minnesota Mining & Mfg Co <3M> | Opposite interlocking zipper member and production thereof |
| US6994698B2 (en) * | 1994-12-28 | 2006-02-07 | Kimberly-Clark Worldwide, Inc. | Flexible mechanical fastening tab |
| US5785784A (en) * | 1994-01-13 | 1998-07-28 | Minnesota Mining And Manufacturing Company | Abrasive articles method of making same and abrading apparatus |
| US5607345A (en) * | 1994-01-13 | 1997-03-04 | Minnesota Mining And Manufacturing Company | Abrading apparatus |
| TW317223U (en) | 1994-01-13 | 1997-10-01 | Minnesota Mining & Mfg | Abrasive article |
| US5505747A (en) * | 1994-01-13 | 1996-04-09 | Minnesota Mining And Manufacturing Company | Method of making an abrasive article |
| SE508613C2 (en) | 1994-04-12 | 1998-10-19 | Sca Hygiene Prod Ab | A method of making a pant diaper or a panty and such an absorbent article |
| US5713111A (en) * | 1994-07-27 | 1998-02-03 | Minnesota Mining And Manufacturing Company | Method for making an interengaging fastener having reduced engagement force |
| US5542942A (en) * | 1994-09-22 | 1996-08-06 | The Procter & Gamble Company | Absorbent article with improved elasticized waistband |
| US5586371A (en) * | 1994-11-08 | 1996-12-24 | The Procter & Gamble Company | Method for manufacturing refastenable fastening systems including a female loop fastening component and the product produced therefrom |
| US6039911A (en) * | 1997-01-09 | 2000-03-21 | 3M Innovative Properties Company | Method for capping stem fasteners |
| GB2327857B (en) * | 1997-08-01 | 2001-09-26 | Ykk Europ Ltd | A disposable nappy |
| US6018852A (en) * | 1998-03-02 | 2000-02-01 | Velcro Industries B.V. | Touch fastener tape |
| WO1999059441A1 (en) * | 1998-05-15 | 1999-11-25 | Gottlieb Binder Gmbh & Co. | Pressure-sensitive fastening part |
| US6687962B2 (en) | 2002-01-16 | 2004-02-10 | Velcro Industries B.V. | Fastener element patterning |
| US7132144B2 (en) * | 2003-02-28 | 2006-11-07 | Velcro Industries B.V. | Fastener tapes |
| US7462385B2 (en) * | 2003-10-14 | 2008-12-09 | 3M Innovative Properties Company | Disposable cleaning implement |
| US7014906B2 (en) * | 2003-10-14 | 2006-03-21 | 3M Innovative Properties Company | Hook fastener and method of making |
| US20060018804A1 (en) * | 2004-07-23 | 2006-01-26 | Sharper Image Corporation | Enhanced germicidal lamp |
| US20060058767A1 (en) * | 2004-09-14 | 2006-03-16 | Fen Zhang | Diapers with improved leak prevention |
| US7608070B2 (en) * | 2004-09-30 | 2009-10-27 | Kimberly-Clark Worldwide, Inc. | Foam-based fasteners |
| US7640637B2 (en) | 2005-11-01 | 2010-01-05 | Kimberly-Clark Worldwide, Inc. | Methods to modify the fibrous landing layer of a foam based fastener and products made from the same |
| DE102006049089A1 (en) * | 2006-10-18 | 2008-04-30 | Clariant International Limited | Hotmelt |
| EP2679112A1 (en) | 2012-06-26 | 2014-01-01 | 3M Innovative Properties Company | Method for manufacturing fasteners and precursor webs, a fastener and a precursor web |
| EP3393805A1 (en) | 2015-12-21 | 2018-10-31 | 3M Innovative Properties Company | Method of making a laminate with a stretched thermoplastic layer |
| JP6807472B2 (en) * | 2017-06-29 | 2021-01-06 | スリーエム イノベイティブ プロパティズ カンパニー | How to make multiple strips of mechanical fasteners |
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| US4069822A (en) * | 1975-10-30 | 1978-01-24 | The Procter & Gamble Company | Porous fibrous web to a substrate and articles therefrom |
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| US4816306A (en) * | 1987-06-19 | 1989-03-28 | National Starch And Chemical Corporation | Hot melt adhesives based on ethylene-n-butyl acrylate |
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-
1989
- 1989-11-17 US US07/438,693 patent/US5100400A/en not_active Expired - Fee Related
-
1990
- 1990-10-19 CA CA002028017A patent/CA2028017A1/en not_active Abandoned
- 1990-11-06 MX MX023198A patent/MX172232B/en unknown
- 1990-11-15 EP EP90312459A patent/EP0429249B1/en not_active Expired - Lifetime
- 1990-11-15 DE DE90312459T patent/DE69003789T2/en not_active Expired - Fee Related
- 1990-11-16 JP JP2311249A patent/JPH0817793B2/en not_active Expired - Lifetime
-
1992
- 1992-01-21 US US07/823,390 patent/US5639327A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US5639327A (en) | 1997-06-17 |
| US5100400A (en) | 1992-03-31 |
| DE69003789T2 (en) | 1994-04-28 |
| JPH0817793B2 (en) | 1996-02-28 |
| DE69003789D1 (en) | 1993-11-11 |
| MX172232B (en) | 1993-12-08 |
| JPH03268756A (en) | 1991-11-29 |
| EP0429249A1 (en) | 1991-05-29 |
| EP0429249B1 (en) | 1993-10-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |