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Publication numberUS3773580 A
Publication typeGrant
Publication dateNov 20, 1973
Filing dateJul 27, 1971
Priority dateJul 27, 1971
Publication numberUS 3773580 A, US 3773580A, US-A-3773580, US3773580 A, US3773580A
InventorsProvost G
Original AssigneeAmerican Velcro Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Bonding fastening members to a substrate
US 3773580 A
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Description  (OCR text may contain errors)

United States Patent 1 1 Nov. 20, 1973 Provost [54] BONDING FASTENING MEMBERS TO A 2,517,389 8/1950 Dow et a1. 156/230 SUBSTRATE 3,232,813 2/1966 Newton 156/322 1,899,067 2/1933 Trumbull 156/309 [7 5] Inv t George Provost, Manchester, 2,614,953 10 1952 Anglada 156/306 N.H. 2,718,047 9/1955 Waldes 156/306 3,490,970 1/1970 Heimber er 156/306 [73] Asslgnee: f 'gf velcm New York, 3,561,073 2 1971 Rosser 156/66 [22] Filed: July 27, 1971 Primary ExaminerDouglas J. Drummond Attorney-Dean S. Edmonds et al. [21] Appl. N0.: 166,638

[57] ABSTRACT [52] US. Cl 156/66, 156/235, 156/306, A fastening member and a method for applying a fas- 156/320, 156/322 tening member to a substrate is described. The [51] Int. Cl A4lh 37/00, B650 11/06 method comprises coating the surface of a substrate [58] Field of Search 156/66, 230, 5, 249, with an adhesive, activating the adhesive on a fasten- 156/306309, 320, 322 ing tape member and then bringing the adhesive coated surfaces into face-to-face relationship with suf- [56] References Cited ficient pressure to firmly affix the tape member to the substrate.

7 Claims, No Drawings BONDING FASTENING MEMBERS TO A SUBSTRATE BACKGROUND OF THE DISCLOSURE 1. Field of the Invention This invention relates to a fastening member, and more particularly to a fastening member for use in a separable fastening device and to its method of manufacture.

II. Disclosure of the Prior Art Separable fasteners such as the hook and loop fasteners described in U.S. Pat. Nos. 2,717,437 and 3,009,235 are widely used for the purpose of attaching one object to another. In general, fasteners of this type include separable members, each member having a pile-like surface containing a multiplicity of hooking elements. Upon being pressed together in face-to-face relationship, the hooking elements of the separable members releasably interengage one another to hold the members together. In the above-mentioned U.S. patents, each separable member comprises a sheet of woven synthetic material having raised loop threads wherein the loops of one member are cut at their outer extremities to form hook-type hooking elements while the loop threads of the other member remain uncut to form loop-type hooking elements. It is also contemplated that a given member may comprise both hooks and loops. When these two members are pressed together in face-to-face relationship, there is substantial engagement of the hook-type hooking elements with the loop-type hooking elements. A considerable effort must be applied to separate the members unless they are peeled apart in which case the members are separated quite easily.

The number of applications in which separable fasteners of the type described above can be advantageously utilized is legion. One problem which characterizes the use of separable fasteners concerns the attachment of the individual fastening members themselves to adjacent structures, such as fabrics. For attachment to fabrics, tape fastening members are usually held in place by stitching the members onto the fabric. This is usually done by a conventional sewing machine. Conventional mechanical fasteners such as clips and staples, have also been used. However, these methods for attaching fastening members to fabrics present numerous disadvantages.

First of all, if the members are sewn onto the fabric it is generally necessary that the person performing the sewing have some skill regarding the operation of a sewing machine. Secondly, if the fastening members are either sewn onto the fabric or held thereto by a conventional mechanical fastener, the overall lifetime of the attachment means is usually much shorther than that of the fabric. For example, after several washings or dry-cleaning processes it has generally been discovered that the threads or mechanical fasteners become loose, and thus the fastening members become detached from the fabric. The use of adhesives for attaching fastening members to an adjacent structure is also known. However, to date, an effective method for permanently attaching a fastening member to a fabric by using an adhesive has not been found.

It is therefore, the principal object of the present invention to overcome the disadvantages stated hereinabove. With the present invention, it is now possible to attach a fastening member to a fabric by using an adhesive in a very simple and efficient manner such that the procedure can be performed in the home without using a sewing machine or other mechanical fastening means by even a child.

SUMMARY OF THE INVENTION The method for securing a fastening member to a substrate, the member having projecting from one surface thereof a multiplicity of hooking elements and having coated on the opposite surface an adhesive film, in accordance with the present invention comprises first applying a synthetic resin based adhesive film on the substrate. Thereafter the adhesive film on the fastening member is activated. The two adhesive coated surfaces are then brought together in face-to-face relationship with sufficient pressure to firmly affix the fastening member to the substrate.

A fastening member for use in a separable fastening device according to the present invention comprises a substrate and a film of a synthetic resin-based adhesive on the substrate. A base member having projecting from one surface thereof a multiplicity of hooking elements contains a synthetic resin-based adhesive on the opposite surface of the member and is affixed to the substrate by contact of each of the adhesive layers in face-to-face relationship.

DESCRIPTION OF THE PREFERRED EMBODIMENTS In accordance with the present invention fastening tape members are adhesively bonded to a substrate following a very unique procedure.

A fastening tape member which may be used in accordance with the present invention has a base member having one surface defined by a plurality of hooking elements which may be hook-type hooking elements, loop-type hooking elements or a combination of both hook-type and loop-type hooking elements. The tape member and projecting hooking elements may be constructed of any of numerous synthetic materials such as, for example, nylon. In order to securely bond an adhesive to the tape member it is preferred that the opposite surface of the tape member have a suitable base coat which would provide for a secure bond between the tape member and the adhesive. In the case of a tape member of woven nylon or woven polyester, a suitable base coat may be Bostik 7064 catalyzed with Boscodur No.30, both of which are sold by the USM Chemical Company. In the case of a molded plastic tape member, the base coat is preferably a primed tape member and .Bostik 4045 which is also sold by the USM Chemical Company. Fastening members used in accordance with the present invention having adhesive coated surfaces may be as described in commonly assigned and copending U.S. Pat. Application Ser. No. 71,920, filed Sept. 14, 1970, now U.S. Pat. No. 3,726,752.

Many types of adhesives are suitable for use as the adhesive lamina of the invention. Suitable adhesives for this purpose are synthetic resin based adhesives, preferably the thermoplastic adhesives such as, for example, Thermogrip 1101 sold by the USM Chemical Company, on a release backing, such as a release paper backing or any other suitable release medium. It is also preferred in order to obtain an excellent bond, that an adhesive film having a thickness of at least approximately 4 to 6 mils be used.

ln practicing the method in accordance with the present invention, the adhesive is first applied to a substrate. Preferably, the adhesive film on a release backing is first placed on the substrate to which it is desired to bond the fastening members can be bonded to numerous types of substrates,, such as fabrics substrates, as, for example, cottons, woolens, synthetics, fiberglass and various blends of these materials whether they are formed of loose or tight weaves.

With the adhesive film facing the substrate, a heat source is applied to the release backing. Sufficient heat and pressure is applied to assure that the adhesive will melt and transfer to the substrate a film of adhesive which will coat a specified area of the substrate. A household iron has been found to be most eminently suitable for this purpose. However, the adhesive can be heated with hot air or with an infrared heating source. Using a temperature ranging from approximately 300 to 350 F for about 5 to 25 seconds when heating the adhesive, is eminently suitable.

After the heat source is removed, the adhesive is allowed to cool for about to seconds. After cooling, the release backing may then be peeled away leaving a coating of adhesive on the substrate.

The adhesive coated surface ofa fastening tape member such as described in commonly assigned and copending U.S. Pat. Application Ser. No. 71,920 filed Sept. 14, 1970 is then activated. This is accomplished by heating the adhesive. Preferably, the same release backing as described above is placed over the adhesive coated surface of the tape member and a heat source is applied tothe backing in the same manner as described above. Thereafter the adhesive coated surface of the tape member is positioned over the adhesive coated surface of the substrate and the two surfaces are brought together with sufficient pressure to securely bond the tape member to the substrate.

One of the unique features of this procedure is that the bonds do not have to be assembled while the adhesive is in a molten condition. The procedure and the adhesive used, allow for what is known as a long open time. Therefore, both bonding surfaces can be heat activated and assembled after a good deal of open time without any great loss in bond strength. In other words, after the adhesive coating is applied to the substrate and after the adhesive coating on the tape member is activated these components may be completely cooled and left standing prior to bonding them together.

The fastening tape members with associated upstanding hook-type hooking elements or loop-type hooking elements which are adhesively bonded to a substrate and which form fastening members in accordance with the present invention may consist of the woven hook pile or loop pile material described in U.S. Pat. Nos. 2,717,437 and 3,009,235 or of the knitted loop pile or hook pile material described in commonly assigned and copending U.S. Pat. Application Ser. No. 659,669, filed Aug. 10, 1967, now U.S. Pat. No. 3,530,687. Alternatively, these hook and loop type elements may consist of the molded plastic hook pile or loop pile material described in commonly assigned copending U.S. Pat. Application Ser. No. 824,597, filed May 14, 1969, now abandoned.

The invention will be described in detail with reference to the following example for illustrative purposes.

EXAMPLE Using a household iron as a heat source, a woven fastening tape member having a multiplicity of upstanding hooking elements projecting from one surface thereof was attached to a fabric in the following manner.

A film of a synthetic resin based adhesive, Thermogrip l 101 manufactured by the USM Chemical Corporation having a thickness of approximately 6 mils and secured onto Daubert N0. l-50CSCK-2 release paper was used. The adhesive containing release paper was positioned on the fabric with the paper side up. A household iron set at approximately 325 F was placed on the paper and pressed firmly for twenty seconds. The iron was removed and the paper was allowed to cool for fifteen seconds. After cooling, the release paper was peeled from the adhesive film, which at this time was securely bonded to the fabric. The same piece of release paper was then placed on the back side of an adhesive coated fastening member. A household iron set at approximately 325 F was then placed on the paper and pressed firmly for five seconds. The iron was then removed and the paper was allowed to cool for fifteen seconds. The release paper was then peeled from the tape member leaving an activated adhesive coating on the member. The adhesive coated surface of the tape member was then placed over the adhesive coated surface of the fabric and the two surfaces were then pressed firmly together by hand. This resulted in a firm bond between the tape member and the fabric producing a fastening member in accordance with the present invention.

The following performance data resulted from sample bonds produced in the manner described above.

Tape members bonded to fabric in the manner described above were subjected to four hours of hot soapy water laundering in a commercial type of washing machine. Also, several samples were subjected to twenty hours of soaking in perchlorethylene to simulate a dry-cleaning process. In both cases there was no substantial loss of bond strength between the tape member and the fabric. Excellent bonds were achieved on substrates of cottons, woolens, syntehtics, fiberglass, and blends of these materials which had either loose or tight weaves. V

I claim:

1. A method for securing a fastening member to a substrate, said member having projecting from one surface thereof a multiplicity of hooking elements and having coated on the opposite surface thereof an adhesive film, comprising the steps of:

a. applying a synthetic resin-based adhesive film on a surface portion of the substrate;

b. heating the adhesive and applying sufficient pressure to coat the surface portion of the substrate with the adhesive;

c. placing a release backing over the adhesive on the fastening member;

(1. heating the adhesive on the fastening member;

e. removing the release backing from the fastening member; and

f. bringing the adhesive coated surface of the fastening member into face-to-face contact with the adhesive coated surface of the substrate with sufficient pressure to firmly affix the fastening member to the substrate.

2. The method according to claim 1 wherein the film of thermoplastic adhesive applied to the substrate is initially coated on a release backing which is removed after heating the thermoplastic adhesive.

3. The method according to claim 2 wherein the adhesive coating on the substrate is heated to at least 300 F.

4. The method according to claim 3 wherein the adhesive film coating on the fastener member is heated to at least 300 F.

5. A method according to claim 1 wherein the substrate is a fabric.

6. A method according to claim 1 wherein the release backing is paper.

7. A method for securing a fastening member to a fabric substrate said member having projecting from one surface thereof a multiplicity of hooking elements and having coated on the opposite thereof an adhesive film, comprising the steps of:

a. contacting the fabric substrate with a film of a thermoplastic adhesive coated on a release backing; b. heating the adhesive to a temperature of about 300 F to about 350 F and applying a sufficient pressure to coat the substrate with the adhesive;

c. removing the release backing from the adhesive coated substrate;

d. placing the release backing over the adhesive on the fastening member;

e. heating the adhesive on the fastening member to a temperature of above 300 F to about 350 F;

f. removing the release backing from the fastening member; and

g. bringing the adhesive coated surface of the substrate and the adhesive coated surface of the fastening member into face-to-face relationship with sufficient pressure to firmly affix the fastening member to the fabric substrate.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3849840 *Sep 20, 1973Nov 26, 1974Kanebo LtdMethod for imparting pressure sensitive adhesion to velvet type fasteners
US4057451 *Jan 26, 1976Nov 8, 1977Libbey-Owens-Ford CompanyMirror mount applying method
US4239829 *Feb 4, 1980Dec 16, 1980Cohen Howard SAdhesive bonding of hook and loop type fabric surfaces
US4489115 *Feb 16, 1983Dec 18, 1984Superturf, Inc.Synthetic turf seam system
US4761318 *Aug 29, 1986Aug 2, 1988Minnesota Mining And Manufacturing CompanyLoop fastener portion with thermoplastic resin attaching and anchoring layer
US4835835 *Dec 24, 1987Jun 6, 1989Minigrip, Inc.Method and apparatus for making extruded separable fastener with reactivatable adhesive
US4909870 *Jun 27, 1988Mar 20, 1990Minigrip, Inc.Method of and apparatus for attaching continuously running fastener strip to web substrate
US4973326 *Nov 30, 1987Nov 27, 1990Minnesota Mining And Manufacturing CompanyDisposable diaper with improved fastener attachment
US5100400 *Nov 17, 1989Mar 31, 1992Minnesota Mining And Manufacturing CompanyDisposable diaper with thermoplastic material anchored hook fastener portion
US5221398 *May 4, 1990Jun 22, 1993Imtec, Inc.Contaminated-surface applicator system
US5447590 *May 24, 1993Sep 5, 1995Milliken Research CorporationMethod to produce looped fabric with upstanding loops
US5505747 *Jan 13, 1994Apr 9, 1996Minnesota Mining And Manufacturing CompanyMolding, bonding, deforming
US5611122 *Jul 19, 1994Mar 18, 1997Minnesota Mining And ManufacturingInterengaging fastener having reduced noise generation
US5614232 *Feb 28, 1996Mar 25, 1997Minnesota Mining And ManufacturingMethod of making an interengaging fastener member
US5639327 *Jan 21, 1992Jun 17, 1997Minnesota Mining And Manufacturing CompanyDisposable diaper with thermoplastic material anchored hook fastener portion
US5662853 *Nov 22, 1995Sep 2, 1997Minnesota Mining Manufacturing CompanyAffixation member for decorating or protecting structures and methods of making same
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US5671511 *Aug 25, 1994Sep 30, 1997Minnesota Mining And Manufacturing CompanyInterengaging fastener member having fabric layer
US5671512 *Jan 19, 1996Sep 30, 1997Minnesota Mining And Manufacturing CompanyInterengaging fastner having reduced engagement force
US5672186 *Mar 13, 1996Sep 30, 1997Minnesota Mining And Manufacturing CompanyRolling flowable polymeric material onto surface of base sheet, then shaping polymer into projections which are bent to form releasable fastener hooks when solidified and bonding reverse of base sheet to reverse of abrasive sheet
US5672404 *Dec 13, 1995Sep 30, 1997Minnesota Mining And Manufacturing CompanyAttachment strips
US5691026 *Mar 8, 1994Nov 25, 1997Minnesota Mining And Manufacturing CompanyFastener member with a dual purpose cover sheet
US5691027 *Sep 29, 1995Nov 25, 1997Minnesota Mining And Manufacturing CompanyFastener with a dual purpose cover sheet
US5699593 *Aug 30, 1996Dec 23, 1997Minnesota Mining & Manufacturing CompanyLoop fastening material
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US5725423 *Mar 3, 1997Mar 10, 1998Minnesota Mining And Manufacturing CompanyAbrading apparatus
US5785784 *Jul 23, 1997Jul 28, 1998Minnesota Mining And Manufacturing CompanyCoating the substrate with abrasives containign radiation curable binder, exposing to radiation and curing the binder
US5786062 *May 27, 1997Jul 28, 1998Minnesota Mining And Manufacturing CompanyAttachment strips
US5830298 *Aug 5, 1997Nov 3, 1998Minnesota Mining And Manufacturing Co.Loop fastening material
US5840089 *Jul 29, 1997Nov 24, 1998Minnesota Mining And Manufacturing CompanySubstrate having abrasive means on one surface and providing a plurality of hooking stems on the oppostie surface
US5852855 *Dec 2, 1996Dec 29, 1998Minnesota Mining And Manufacturing CompanyDisposable diaper with fastener
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US6156145 *Aug 21, 1998Dec 5, 2000Face International Corp.Method of manufacturing multi-layered flextensional piezoelectric transducer
US6579161Dec 6, 1996Jun 17, 20033M Innovative Properties CompanyAbrasive article
US6579162Dec 15, 2000Jun 17, 20033M Innovative Properties CompanyAbrasive article
US6884157Mar 25, 2003Apr 26, 20053M Innovative Properties CompanyAbrasive article
US7044834Apr 20, 2005May 16, 20063M Innovative Properties CompanyAbrasive article
EP0258015A2 *Aug 21, 1987Mar 2, 1988Minnesota Mining And Manufacturing CompanyLoop fastener portion with thermoplastic resin attaching and anchoring layer
Classifications
U.S. Classification156/66, 24/693, 156/322, 24/448, 156/310, 156/320, 428/100, 156/235
International ClassificationA44B18/00, A41H37/00
Cooperative ClassificationA41H37/001, A44B18/0073
European ClassificationA44B18/00G2, A41H37/00B
Legal Events
DateCodeEventDescription
Apr 1, 1988ASAssignment
Owner name: VELCRO INDUSTRIES B.V., NEIUWE WETERINGSTRAAT 38,
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:VELCRO USA, INC.;REEL/FRAME:004871/0369
Effective date: 19870930
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VELCRO USA, INC.;REEL/FRAME:004871/0369
Owner name: VELCRO INDUSTRIES B.V.,NETHERLANDS