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Fire-resistant fastening device and method of manufacture

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Publication number
US3594873A
US3594873A US3594873DA US3594873A US 3594873 A US3594873 A US 3594873A US 3594873D A US3594873D A US 3594873DA US 3594873 A US3594873 A US 3594873A
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Prior art keywords
fastening
nylon
loop
loops
device
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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 - Lifetime
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Clive E Hockmeyer Jr
Marcel C Ouellette
Peter P Ferron
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Velcro Industries BV
American Velcro Inc
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American Velcro Inc
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    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B18/00Fasteners of the touch-and-close type; Making such fasteners
    • A44B18/0069Details
    • A44B18/0092Details flame retardant
    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B18/00Fasteners of the touch-and-close type; Making such fasteners
    • A44B18/0023Woven or knitted fasteners
    • A44B18/0034Female or loop elements
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00Buckles, buttons, clasps, etc.
    • Y10T24/27Buckles, buttons, clasps, etc. including readily dissociable fastener having numerous, protruding, unitary filaments randomly interlocking with, and simultaneously moving towards, mating structure [e.g., hook-loop type fastener]
    • Y10T24/2733Buckles, buttons, clasps, etc. including readily dissociable fastener having numerous, protruding, unitary filaments randomly interlocking with, and simultaneously moving towards, mating structure [e.g., hook-loop type fastener] having filaments formed from continuous element interwoven or knitted into distinct, mounting surface fabric

Abstract

A separable fastening device, resistant to flame and having a very large number of closely spaced hooking elements of the hook and loop type, such that pressing opposed surfaces of two fastening members together in face-to-face relation will engage a large number of hooks and loops, is disclosed; the loops are formed from a flame and elevated temperature resistant nylon fiber of very low denier, many filaments of which must first be twisted in an S direction and two each of the twisted strands then reverse plied together in the Z direction to produce a stabilized yarn having sufficient strength and body to form the loops.

Description

United States Patent Inventors Clive E. Hockmeyer, Jr.

Lowell, Mass.; Marcel C. Ouellette, Bedtord, N.H.; Peter P. Fen-on, Manchester, NH.

Appl. No. 805,419

Filed Mar. 10, 1969 Patented July 27, I971 Assignee American Velcro, lnc.

FIRE-RESISTANT FASTENING DEVICE AND METHOD OF MANUFACTURE 5 Claims, 4 Drawing Figs.

US. Cl 24/204, 139/384 Int. Cl A44b 13/00 Field of Search 139/391,

[56] References Cited UNlTED STATES PATENTS 3,154,837 11/1964 De Mestral 24/204 3,461.513 8/1969 Girard et al 28/72 Primary Examiner-Henry S. .laudon Attorney-Pennie, Edmonds, Morton, Taylor and Adams ABSTRACT: A separable fastening device, resistant to flame and having a very large number of closely spaced hooking elements of the hook and loop type, such that pressing opposed surfaces of two fastening members together in face-to-face relation will engage a large number of hooks and loops, is disclosed; the loops are formed from a flame and elevated temperature resistant nylon fiber of very low denier, many filaments of which must first be twisted in an S direction and two each of the twisted strands then reverse plied together in the Z direction to produce a stabilized yarn having sufficient strength and body to form the loops.

F IRE-RESISTANT FASTENING DEVICE AND METHOD OF MANUFACTURE BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a flame and elevated temperature resistant separable fastening device of the type having two fastening members each provided with a very large number of closely spaced interengageable hooking elements of the hook and loop type, one of said members comprising hooks and the other of said members comprising loops. The fastening members are characterized by the property that opposed surfaces of the two can be pressed together in face-to-face relation so that a large number of hooks on one of the members will ongage a large umber of loops on the other member for several cycles of repeated engagement and disengagement without permanently deforming the hooks or loops and without substantially crushing the loops. The invention also relates to a method of making these fastening devices.

2. Description of the Prior Art US. Pat. Nos. 3,009,235 and 3,083,737 and 3,l54,837 disclose various forms of separable pile-fastening devices, i.e., a fastener comprised of two separate fastening tapes having interengageable piles which contain loop elements and loop-engaging hook elements. The fastening devices described in these patents are recited as preferably being constructed from synthetic polymer materials such as nylon (polyamide fiber manufactured by the Du Pont Company). For some applications these apes may be fabricated from natural textile material with an interwoven pile of synthetic material.

Engageable pile fasteners have found widespread use where ease of opening and closing is desired such as use in clothing, footwear, belts, curtains, tapestry, and for a variety of uses in commercial aviation. However, because of the flammable nature of the polymeric materials utilized in the manufacture of the interengageable pile elements, such fasteners, when used on commercial aircraft, must necessarily be resistant to flame and elevated temperatures and must meet he United States Federal Aviation Agency standards in this respect. It has generally been found that fasteners of the type referred to herein, when produced from a standard polyamide fiber such as the nylon monofilament produced by the Du Pont Company, ill bun when tested under the conditions specified in certain standard bum tests" such as that disclosed in United States Test CCC-T l9l b, method 5902, dated May 15, 1951. Accordingly, it is an object of his invention to provide a separable fastening device which will function satisfactorily as such and yet be resistant to flame nd elevated temperatures.

SUMMARY OF THE INVENTION Broadly stated, the invention relates to a separable fastening device, resistant to flame and high temperatures, having two fastening members each provided with a very large number of closely spaced hooking elements of the hook and loop type such that pressing opposed surfaces of two fastening members together in face-to-face relation will engage a large number of hooks and loops.

The hook tape member is manufactured, in the warp and filling ground weave, from a high-temperature nylon, and, for the hook element, from a standard nylon monofilament. The pile loop fastening member is manufactured from high-temperature nylon in both the warp and filling ground weave and also for the pile loops. By high temperature nylon," there is meant a synthetic polyamide fiber having good dimensional stability and excellent heat and flame resistance. A high-temperature nylon such as Nomex (a nylon manufactured by the Du Pont Company) which, at temperatures above 700 F. (371 C.) degrades to a friable char at a rate proportional to the intensity of the heat source and in which any flame produced during oxidation is self-extinguishing when the fiber is withdrawn from the source of heat, is particularly suitable for use in commercial aircraft.

A major drawback, to date, with respect to the use of hightemperature nylon in producing the separable fastening device described herein is its unavailability in a filament greater than 2 denier in size which is much too weak a filament for the production of satisfactory loop elements. It has been found that a 20-denier standard nylon is sufficient to produce a satisfactory pile loop fastening member. The loops themselves must have sufficient strength and body to withstand repeated engagements with the hook elements, which is not possible with a weak filament. However, the exceptional flame-resistant properties of high temperature nylon makes highly desirable its adaptation for use in the separable fastening device.

For the purpose of enhancing the firmness of engagement and strength of flame resistant separable fastening device, the present invention provides a method for weaving he fastening member which comprises he pile loops from mutifilament yarns of the light-denier high-temperature nylon. The hightemperature nylon, which is a Z-denicr filament, may, of course, be twisted to form yarns of greater denier size. Such yarns, however, are unsatisfactory for producing the loops because of their tendency to twist upon themselves and close after their formation during weaving thus preventing engagement with the hooking element.

In the present invention a twisted yarn of high-denier hightemperature nylon is produced and is then reverse plied with another such twisted yarn to produce a dead yarn which has sufficient strength and body to produce a pile loop that may be fixed and stabilized and which will retain its shape. A separable fastening device produced in accordance with this invention will be flame and high-temperature resistant and will comprise a pile loop member which affords increased probability of engagement of the hooks with the loops so that a major percentage, if not all, of the hooks 'on the hook-carrying member will become engaged with a loop on the loop-carrying member.

BRIEF DESCRIPTION OF THE INVENTION FIG. 1 is a perspective view of a pile loop tape member of the fastening device of the invention showing pile loop elements extending from one surface thereof;

FIG. 2 is an enlarged fragmentary perspective of the pile loop element in a fastening device ofthe invention;

FIG. 3 is an enlarged fragmentary perspective of a hook element in a fastening device of the invention; and

FIG. 4 is a side elevation of two tape members forming a fastening device in opposed face-to-face relationship but spaced apart.

With reference to FIG. 2, the pile loop fastening member is manufactured by forming a base fabric which comprises a number of weft threads 12 and warp threads 14. The loop 16 of said fabric very formed as supplementary warp threads which are passed over metal lancets during the weaving operation, in a loom generally employed in weaving velvet ribbon. Said supplementary warp threads which form the loops, as well as said weft threads 12 and warp threads 14 in the ground weave, are manufactured from Du Pont Nomex nylon yarn which is resistant to flame and high temperature. Because the Nomex nylon cannot be made in the larger denier size required for satisfactory use in the regular pile loop element (20 denier), it is necessary to take a large number of the very fine Nomex nylon filaments (2 denier) and apply twist to them to produce a yarn of sufficiently high denier and then to take two such ends (strands) and ply them in a reverse twist. The reverse twist is necessary to produce what is known as dead yarn having sufficient strength and body to produce satisfactory loops.

To produce the loops 16 shown in FIG. 2, the Nomex nylon was prepared by twisting filaments of 2-denier Nomex in 2% turns per inch S. Two ends each of the ZOO-denier multifllament yarn thus produced were then reverse plied together in 2% turns per inch Z. The Nomex yarn thus plied has been found to be quite satisfactory for use in producing the loop elements; it resists breaking, and is sufficiently stabilized so as to be easily engageable, in repeated use, with the hook element. The loops themselves are fanned out during manufacture and remain so because of the stabilization imparted to the yarn by the reverse twisting and plying of the filaments. The pile loop member thus formed is shown in FIG. 1, and, when said loop element is placed in face-to-face relation with the hooking member as shown in FIG. 4, they may be pressed together to fasten them to each other, and progressively peeled apart when it is desired to separate the two members.

The ground weave fabric or base material, into which the pile loops are woven, is also manufactured from Nomex nylon which has the following yarn characteristics: The ground warp yarn used is a ZOO-denier Nomex nylon having 100 filaments per thread twisted 20 turns per inch in the S direction; the filling yarn or weft yarn is a ZOO-denier Nomex nylon having 100 filaments per thread twisted five turns per inch in the Z direction.

The hooking member, shown in FIG. 3, is manufactured from Du Pont Nomex yarn in the warp l4 and filling ground weave l2 and standard Du Pont nylon monofilament as the hooks 17. The hook element is manufactured from the standard nylon monofilament because ofits ability to be thermoset and to retain its shape, necessary factors for satisfactory engagement of the hooks and loops. The danger of flammability of the hooks is negligible because of the smothering effect of the pile loop member when the hooks are in engagement therewith.

The loops are preferably woven with considerable firmness into the base fabric 10, which is formed from warp yarns l4 and weft yarns 12 as shown in H6. 2. After the weaving operation has been completed, the loops 16 formed from multifilament Nomex nylon yarns may be fastened or stabilized so that they retain their shape or position. This may be effected by heat setting, by impregnation of the fabric by adhesive products, by a heat-settable resin capable of withstanding such temperatures as are likely to be encountered in normal usage, or by a combination thereof. It must be remembered, however, that the adhesive to be used must conform to the standards of the burn test" referred to herein when the material is to be used under conditions where those standards will apply. In this manner, a very large number of durable and firmly anchored loops are provided.

We claim:

1. A separable fastening device of the type having two fastening members each provided with a very large number of closely spaced interengageable hooking elements, one of said fastening members comprisin hooks and the other of said members comprising loops and characterized by the property that pressing opposed surfaces of the two fastening members together in face-to-face relation, a large number of hooks will engage a large number of loops, the improvement in combination therewith comprising a base material with said loop elements secured thereto in positions extending generally upright from one surface of the base, said loops being formed from a flame and elevated temperature resistant multifilament hightemperature nylon yarn, said multifilament high-temperature nylon yarn comprising two plied high-temperature nylon strands each of which comprises a number of high-temperature nylon filaments which are twisted in the S direction to form said strands and, subsequently, reverse plied with one another in the Z direction.

2. A separable fastening device according to claim 1 wherein said multifilament high-temperature nylon yarn is comprised of two plied strands of ZOO-denier high-temperaturc nylon each of which comprises filaments per strand of 2-dcnier high-temperature nylon twisted 2% turns per inch in the S direction and, subsequently, each of said ZOO-denier strands then being reverse plied together 2% turns per inch in the Z direction.

3. A separable fastening device according to claim 1 wherein the base material of the loop-fastening member is woven, with the loop elements interlaced within the base and extending generally upright from one surface of the base material.

4. A separable fastening device according to claim 1 wherein the base material is shrunk about the roots of the loop-fastening member to interlock the loop elements into the base material.

5. A separable fastening device according to claim 1 wherein the device is resistant to flame and elevated temperatures.

Claims (5)

1. A separable fastening device of the type having two fastening members each provided with a very large number of closely spaceD interengageable hooking elements, one of said fastening members comprising hooks and the other of said members comprising loops and characterized by the property that pressing opposed surfaces of the two fastening members together in face-to-face relation, a large number of hooks will engage a large number of loops, the improvement in combination therewith comprising a base material with said loop elements secured thereto in positions extending generally upright from one surface of the base, said loops being formed from a flame and elevated temperature resistant multifilament high-temperature nylon yarn, said multifilament high-temperature nylon yarn comprising two plied high-temperature nylon strands each of which comprises a number of hightemperature nylon filaments which are twisted in the S direction to form said strands and, subsequently, reverse plied with one another in the Z direction.
2. A separable fastening device according to claim 1 wherein said multifilament high-temperature nylon yarn is comprised of two plied strands of 200-denier high-temperature nylon each of which comprises 100 filaments per strand of 2-denier high-temperature nylon twisted 2 1/2 turns per inch in the S direction and, subsequently, each of said 200-denier strands then being reverse plied together 2 1/2 turns per inch in the Z direction.
3. A separable fastening device according to claim 1 wherein the base material of the loop-fastening member is woven, with the loop elements interlaced within the base and extending generally upright from one surface of the base material.
4. A separable fastening device according to claim 1 wherein the base material is shrunk about the roots of the loop-fastening member to interlock the loop elements into the base material.
5. A separable fastening device according to claim 1 wherein the device is resistant to flame and elevated temperatures.
US3594873A 1969-03-10 1969-03-10 Fire-resistant fastening device and method of manufacture Expired - Lifetime US3594873A (en)

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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2196131A1 (en) * 1972-08-19 1974-03-15 Kanebo Ltd
US3943981A (en) * 1969-01-24 1976-03-16 Velcro S.A. Hooking-up device
US4330907A (en) * 1979-04-05 1982-05-25 Yoshida Kogyo K.K. Velvet type fastener tape and method of producing the same
EP0152497A1 (en) * 1982-08-20 1985-08-28 Actief N.V. Laminate product for use as part of a separable fastener, method and apparatus for attaching separable fastener tapes to a panel, and laminate panel for footwear fastenings
EP0403970A2 (en) * 1989-06-20 1990-12-27 Hoechst Aktiengesellschaft Textile fastener made from flame-resistant polyester monofilaments
US5214942A (en) * 1991-06-06 1993-06-01 Guilford Mills, Inc. Loop-type textile fastener fabric and method of producing same
US5267453A (en) * 1991-06-06 1993-12-07 Guilford Mills, Inc. Loop-type textile fastener fabric and method of producing same
US5299602A (en) * 1993-03-11 1994-04-05 Claude Barbeau Textile material for outer shell of firefighter garment
WO1995022918A1 (en) * 1994-02-28 1995-08-31 Velcro Industries B.V. Woven self-engaging fastener
US6018852A (en) * 1998-03-02 2000-02-01 Velcro Industries B.V. Touch fastener tape
US6202264B1 (en) * 1998-03-06 2001-03-20 Ykk Corporation Surface fastener made of fiber and method for manufacturing the same
EP1129639A1 (en) * 2000-02-29 2001-09-05 Ykk Corporation Surface fastener
WO2002022055A2 (en) 2000-09-11 2002-03-21 Scimed Life Systems, Inc. Endovascular prosthetic devices having hook and loop structures
US6386242B1 (en) * 1999-07-30 2002-05-14 Kuraray Co., Ltd. Hook fastener member to minimize damage to loops
US6443187B1 (en) * 1998-03-30 2002-09-03 Velcro Industries B.V. Aligning woven loop elements to form mounting sleeves
US20030100878A1 (en) * 1994-12-28 2003-05-29 A. Todd Leak Flexible mechanical fastening tab
US20040166282A1 (en) * 2003-02-20 2004-08-26 Kingsford Howard A. Woven fastener products
US20050081341A1 (en) * 2003-10-15 2005-04-21 Mcdougall William B.S. Woven touch fastener products
US20050081345A1 (en) * 2003-10-15 2005-04-21 Tolan Nancy J. Low profile touch fastener
US20100236180A1 (en) * 2007-08-03 2010-09-23 Tac-Fast Georgia Llc Method for installing a surface covering, and apparatus therefor
JP5192824B2 (en) * 2005-12-26 2013-05-08 クラレファスニング株式会社 Improved self-bonding loop fastener
US8439099B1 (en) * 2011-12-01 2013-05-14 Grant W. Crider Dual curtain closure system having uni-directional securing hooks
US20150196100A1 (en) * 2012-09-28 2015-07-16 Kuraray Fastening Co., Ltd. Fabric surface fastener in which both sides join together

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3154837A (en) * 1957-10-02 1964-11-03 Internat Velcro Company Method for the manufacture of pile fabrics
US3461513A (en) * 1967-02-20 1969-08-19 American Velcro Inc Separable fastening device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3154837A (en) * 1957-10-02 1964-11-03 Internat Velcro Company Method for the manufacture of pile fabrics
US3461513A (en) * 1967-02-20 1969-08-19 American Velcro Inc Separable fastening device

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943981A (en) * 1969-01-24 1976-03-16 Velcro S.A. Hooking-up device
FR2196131A1 (en) * 1972-08-19 1974-03-15 Kanebo Ltd
US4330907A (en) * 1979-04-05 1982-05-25 Yoshida Kogyo K.K. Velvet type fastener tape and method of producing the same
WO1985003625A1 (en) * 1982-08-20 1985-08-29 Velcro Industries B.V. Separable fastener
EP0152497A1 (en) * 1982-08-20 1985-08-28 Actief N.V. Laminate product for use as part of a separable fastener, method and apparatus for attaching separable fastener tapes to a panel, and laminate panel for footwear fastenings
EP0403970A3 (en) * 1989-06-20 1991-11-06 Hoechst Aktiengesellschaft Textile fastener made from flame-resistant polyester monofilaments
EP0403970A2 (en) * 1989-06-20 1990-12-27 Hoechst Aktiengesellschaft Textile fastener made from flame-resistant polyester monofilaments
US5176944A (en) * 1989-06-20 1993-01-05 Hoechst Aktiengesellschaft Textile fastener made of flame-resistant polyester monofilaments
US5407722A (en) * 1991-06-06 1995-04-18 Guilford Mills, Inc. Loop-type textile fastener fabric, method of producing same and process of treating same
US5214942A (en) * 1991-06-06 1993-06-01 Guilford Mills, Inc. Loop-type textile fastener fabric and method of producing same
US5449530A (en) * 1991-06-06 1995-09-12 Guilford Mills, Inc. Method of producing loop-type textile fastener fabric and process of treating same
US5267453A (en) * 1991-06-06 1993-12-07 Guilford Mills, Inc. Loop-type textile fastener fabric and method of producing same
US5299602A (en) * 1993-03-11 1994-04-05 Claude Barbeau Textile material for outer shell of firefighter garment
WO1995022918A1 (en) * 1994-02-28 1995-08-31 Velcro Industries B.V. Woven self-engaging fastener
US5457855A (en) * 1994-02-28 1995-10-17 Velcro Industries, B.V. Woven self-engaging fastener
US6994698B2 (en) 1994-12-28 2006-02-07 Kimberly-Clark Worldwide, Inc. Flexible mechanical fastening tab
US20030100878A1 (en) * 1994-12-28 2003-05-29 A. Todd Leak Flexible mechanical fastening tab
US6018852A (en) * 1998-03-02 2000-02-01 Velcro Industries B.V. Touch fastener tape
US6202264B1 (en) * 1998-03-06 2001-03-20 Ykk Corporation Surface fastener made of fiber and method for manufacturing the same
ES2165753A1 (en) * 1998-03-06 2002-03-16 Ykk Corp Surface fastener made of fibers and process for making it.
US6443187B1 (en) * 1998-03-30 2002-09-03 Velcro Industries B.V. Aligning woven loop elements to form mounting sleeves
US6386242B1 (en) * 1999-07-30 2002-05-14 Kuraray Co., Ltd. Hook fastener member to minimize damage to loops
US6477750B2 (en) 2000-02-29 2002-11-12 Ykk Corporation Surface fastener
EP1129639A1 (en) * 2000-02-29 2001-09-05 Ykk Corporation Surface fastener
WO2002022055A2 (en) 2000-09-11 2002-03-21 Scimed Life Systems, Inc. Endovascular prosthetic devices having hook and loop structures
US7780718B2 (en) 2000-09-11 2010-08-24 Boston Scientific Scimed, Inc. Endovascular prosthetic devices having hook and loop structures
US20060085014A1 (en) * 2000-09-11 2006-04-20 Scimed Life Systems, Inc. Endovascular prosthetic devices having hook and loop structures
US6986786B1 (en) 2000-09-11 2006-01-17 Scimed Life Systerms, Inc. Endovascular prostethic devices having hook and loop structures
US20040166282A1 (en) * 2003-02-20 2004-08-26 Kingsford Howard A. Woven fastener products
US20050081345A1 (en) * 2003-10-15 2005-04-21 Tolan Nancy J. Low profile touch fastener
US20050081341A1 (en) * 2003-10-15 2005-04-21 Mcdougall William B.S. Woven touch fastener products
US8082637B2 (en) 2003-10-15 2011-12-27 Velcro Industries B.V. Low profile touch fastener
JP5192824B2 (en) * 2005-12-26 2013-05-08 クラレファスニング株式会社 Improved self-bonding loop fastener
US20100236180A1 (en) * 2007-08-03 2010-09-23 Tac-Fast Georgia Llc Method for installing a surface covering, and apparatus therefor
US8439099B1 (en) * 2011-12-01 2013-05-14 Grant W. Crider Dual curtain closure system having uni-directional securing hooks
US20150196100A1 (en) * 2012-09-28 2015-07-16 Kuraray Fastening Co., Ltd. Fabric surface fastener in which both sides join together
US9629421B2 (en) * 2012-09-28 2017-04-25 Kuraray Fastening Co., Ltd. Fabric surface fastener in which both sides join together

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