CA2108550C - Laminated hook fastener and method of making same - Google Patents

Laminated hook fastener and method of making same

Info

Publication number
CA2108550C
CA2108550C CA 2108550 CA2108550A CA2108550C CA 2108550 C CA2108550 C CA 2108550C CA 2108550 CA2108550 CA 2108550 CA 2108550 A CA2108550 A CA 2108550A CA 2108550 C CA2108550 C CA 2108550C
Authority
CA
Grant status
Grant
Patent type
Prior art keywords
material
plastic
hook
roll
forming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CA 2108550
Other languages
French (fr)
Other versions
CA2108550A1 (en )
Inventor
William J. Kennedy
George A. Provost
Gerald F. Rocha
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Velcro Industries BV
Original Assignee
Velcro Industries BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date
Family has litigation

Links

Classifications

    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B18/00Fasteners of the touch-and-close type; Making such fasteners
    • A44B18/0003Fastener constructions
    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B18/00Fasteners of the touch-and-close type; Making such fasteners
    • A44B18/0003Fastener constructions
    • A44B18/0007Fastener constructions in which each part has similar elements
    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B18/00Fasteners of the touch-and-close type; Making such fasteners
    • A44B18/0046Fasteners made integrally of plastics
    • A44B18/0049Fasteners made integrally of plastics obtained by moulding processes
    • 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
    • A44B18/0073Attaching means
    • 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
    • A44B18/0084Double-sided
    • 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/222Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length characterised by the shape of the surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32Component parts, details or accessories; Auxiliary operations
    • B29C43/44Compression means for making articles of indefinite length
    • B29C43/46Rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • B29C59/022Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing characterised by the disposition or the configuration, e.g. dimensions, of the embossments or the shaping tools therefor
    • B29C59/025Fibrous surfaces with piles or similar fibres substantially perpendicular to the surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D5/00Producing elements of slide fasteners; Combined making and attaching of elements of slide fasteners
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32Component parts, details or accessories; Auxiliary operations
    • B29C43/44Compression means for making articles of indefinite length
    • B29C43/46Rollers
    • B29C2043/461Rollers the rollers having specific surface features
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32Component parts, details or accessories; Auxiliary operations
    • B29C43/44Compression means for making articles of indefinite length
    • B29C43/46Rollers
    • B29C2043/461Rollers the rollers having specific surface features
    • B29C2043/465Rollers the rollers having specific surface features having one or more cavities, e.g. for forming distinct products
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/727Fastening elements
    • B29L2031/729Hook and loop-type fasteners
    • 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]
    • 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]
    • Y10T24/2708Combined with diverse fastener
    • 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
    • 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]
    • Y10T24/275Buckles, 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] with feature facilitating or causing attachment of filaments to mounting surface
    • 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]
    • Y10T24/275Buckles, 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] with feature facilitating or causing attachment of filaments to mounting surface
    • Y10T24/2758Thermal or adhesive
    • 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]
    • Y10T24/2775Buckles, 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 opposed structure formed from distinct filaments of diverse shape to those mating therewith
    • 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]
    • Y10T24/2792Buckles, 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 mounting surface and filaments constructed from common piece of material
    • 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
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24008Structurally defined web or sheet [e.g., overall dimension, etc.] including fastener for attaching to external surface
    • 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
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24008Structurally defined web or sheet [e.g., overall dimension, etc.] including fastener for attaching to external surface
    • Y10T428/24017Hook or barb
    • 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
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/249921Web or sheet containing structurally defined element or component
    • Y10T428/249953Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249955Void-containing component partially impregnated with adjacent component
    • Y10T428/249958Void-containing component is synthetic resin or natural rubbers
    • 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
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/249921Web or sheet containing structurally defined element or component
    • Y10T428/249953Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249955Void-containing component partially impregnated with adjacent component
    • Y10T428/249959Void-containing component is wood or paper
    • 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
    • Y10T442/00Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102Woven scrim
    • 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
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    • Y10T442/00Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102Woven scrim
    • Y10T442/109Metal or metal-coated fiber-containing scrim
    • 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
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    • Y10T442/00Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102Woven scrim
    • Y10T442/15Including a foam layer
    • 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
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    • Y10T442/00Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102Woven scrim
    • Y10T442/155Including a paper layer
    • 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
    • Y10T442/00Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102Woven scrim
    • Y10T442/164Including a preformed film, foil, or sheet
    • 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
    • Y10T442/00Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/184Nonwoven scrim

Abstract

A laminated hook fastener and a method for making a laminated extruded hook fastener strip on a roll having hook forming cavities in its surface by extruding plastic material into the interface between the forming roll and a second strip carried by a backing roll is provided. The second strip is firmly bonded to the fastener strip on the side opposite the formed hooks.

Description

WO 93/03b44 PCT/LS92/06257 ? This invention rala_es to an improved fastener of the 3 hook and loon Hype and a method .or producing the same 4 using a combined extrusion/roll forming ~rocess. The assignee of this application is owner of U.S. Patent No.
6 4,775,310 which describes an a:,paratus for makinc_ a 7 separable fastener and L.S. Patent No. 4,872,243 which 8 describes the product produced by the apparatus of the 9 former patent. Striplike fasteners of the type described in the subject patents comprise a great multiplicity of 11 closely spaced upstanding hook'_ike projections to 12 releasably engage loops of a companion fastener strip to 13 form a cyclable or semipermanent closure sold in the trade 14 under the brand name Velcro. Depending uDOn the configuration of the multihook fastener, many different 16 types of material are adapted for coaction therewith to 17 effect joining of the structures to which the strip 18 fasteners are themselves joined: Such fastener devices 19 are finding broad usage in such diverse applications as securing automotive seat covers to foamed seat buns, 21 closures for food bags, the application of armor to 22 military vehicles and holding down floor coverings to 23 floors.
24 Each of the recited applications and many more, well known to those skilled in the art, require the fastener to 26 be permanently attached to a second article such as a 27 piece of textile fabric, a seat bun, a floor or the flap 28 of a paper bag. Sewing, however, is limited as to the 29 nature of the material to which the fastener may be.
attached. Adhesive systems have long been used as ~a 31 principal method of attaching fasteners to other objects 32 as well. U.5. Patent No. 3,773,580 discloses a method of 33 securing a fastener member to a substrate by first 34 applying a synthetic resin adhesive to one side of the base of a fastener, opposite the side containing the 36 upstanding engaging elements, and then applying an ~3.~$j~Q

1 adhesive to the substrate. Thereafter the adhesive 2 coating on the fastener is activated. The two adhesive 3 coated surfaces are brought together in face to face 4 relationship to firmly affix the fastener member to the substrate. The subject patent teaches that "in order to 6 securely bond an adhesive to the tape member it is 7 preferred that the apposite surface of the tape member 8 have a suitable base coat which would provide for a secure 9 bond between the tape member and the adhesive". U.S.
1O Patent No. 3,726,752 instructs that in preparing adhesive 11 laminates, wherein synthetic resin based adhesive is 12 laminated to a web of polyamide polymer, it was found that 13 strong bonding between the polyamine substrate and the 14 adhesive lamina were difficult to achieve, and the prior art is "well-studded with attempts to overcome this v 16 problem". This patent overcomes such difficulties by 17 treating the polyamide web with primer coating consisting 18 of a complex chemical mixture in a solvent medium to 19 render an improved bonding surface. Many patents, including U.S. Patent No. 2, 349,290 and U.S. Patent No.
21 3.060,070 and U.S. Patent No. 3,111,448 and U.S. Patent 22 No. 2,766,164, describe methods for bonding poly(amide) 23 polymer to specific surfaces primarily natural or 24 synthetic rubber. All of these teachings rely upon chemical means for enhancing the ability to bond to the 26 surface of a sheet or fibrous material.
27 Many plastic fastener tapes are produced from plastic 28 materials possessing the minimum strength and resiliency 29 essential to the proper functioning of the hooklike projections. Customarily the side of the fastener tape 31 apposite the upstanding hooks is a smooth, flat, uniform 32 and regular surface difficult to bond, as is well 33 documented in the prior art. Such difficulties present 34 particular problems for hook and loop fasteners. This class of products are convenience products and if it is 36 necessary to apply complex chemical treatments to the tape -3- 21~8~~0 1 prior to bonding the convenience advantage is lost. It is 2 known to apply pressure sensitive adhesives to such 3 fasteners by the application of corona treatments in the 4 manufacturing facilities where the fastener tapes are manufactured but such treatments are not available for 6 many users and do not present a reasonable solution for 7 creating a fastener surface which is readily bondable to a 8 wide variety of surfaces using a wide range of adhesive 9 types. U.S. Patent No. 3,594,865 describes an apparatus for continuously forming a flexible web with molded 11 protuberances of plastic material incorporated in a base 12 web. The base of the web is either a porous woven or 13 nonwoven fabric, or an extruded film. The supporting 14 fabric is impregnated with molten plastic simultaneously as hooks are formed. While U.S. Patent No. 3,594,865 is 16 sparse in detail concerning the nature of the product 17 formed from the apparatus it does characterize the 18 impregnation of the base fabric as complete, stating in 19 appropriate part, ~~a liquid moldable plastic material, for example a molten plastic, is injected into the hook 2I molding recesses of the wire and also onto the surface and 22 into the interstices of the base fabric which lies on the 23 surface of the drum." The base fabric passes under a 24 nozzle which impregnates it with the same plastic used to inject the dies used to form the plastic hooks with the 26 clear implication the porous base web is completely 27 saturated with the plastic. This is considerably 28 different from the products of the present invention 29 wherein the process controls the distribution of plastic into the backing material to a degree necessary to firmly 31 hold the backing material to the base of the hook sheet 32 but does not encase the backing to destroy it~s aesthetic 33 characteristics as a functioning backing material to 34 modify the back surface of the fastener. The backing of U.S. Patent No. 3,594,865 is primarily a support onto 36 which hooks~are formed and does not modify the backing of 2~.~~5~~ -4-1 the fastener to receive adhesives or gluing agents nor is 2 it possible to utilise loop materials as the backing 3 material to form back to back fasteners. It is also known 4 to use complex laminating methods to add a bondable surface to many sheet materials but such methods are 6 expensive and often create a final product which has 7 undesirable characteristics such as bulk, stiffness, a 8 tendency to delaminate, operating temperature limitations 9 or other properties making the laminate undesirable.
A product using such techniques, well known in the art 11 of hook and loop fasteners, is the so called back to back 12 fastener. Such a product is created by taking a hook 13 fastener and a loop fastener and bonding the two together 14 in a back to back relationship such that the resulting laminate has hooks on one side and loops on the other 16 side. Such a combination finds wide use in many strapping 17 operations such as wire ties, plant ties and fastener 18 straps for holding splints and the like in place. The 19 limitation of such products in the Bast has focused on the method used to laminate the two components together as 21 described above. The bulk created by the adhesive bonding 22 of such laminates has clearly limited its usefulness.
23 Therefore it is the object of the present invention to 24 produce a hook portion of a hook and loop fastener system which has a surface opposite the surface containing the 26 upstanding hooks substantially modified in its 27 characteristics from the customary flat, smooth, even 28 surface which has little compatibility for bonding to 29 other materials. A further objective of the invention is to create a surface on the back of a base of a plastic 31 hook and loop fastener which will readily accept bonding 32 agents such as adhesives, glues, cements and the like 33 without special treatment of the surface. It is a further 34 objective of the invention to create a loop surface on the back portion of the base of a plastic hook fastener which ~2~.~~ ~~i~,~
1 is capable of engaging into hooks on the front surface 2 thereof to form a back to back laminate with less bulk, 3 stiffness and thickness.

The process described in U.S. Patent No. 4,794,028 for 6 making plastic hooks utilizes an apparatus described in 7 U.S. Patent No. 4,775,310 comprising °a first cooled 8 unitary forming roller having a plurality of hook forming 9 cavities defined in the periphery thereof and extending inwardly therefrom; a second pressure roller positioned 11 for coaction with said first forming roller; means for 12 concurrently rotating said first and second rollers in 13 opposite directions about their generally respective axis;
14 means for forming a striplike extrusion of molten plastic material adjacent said first and second rollers to be 16 directed therebetween at an interface thereof such that 17 said plastic material fills said hook forming cavities and 18 forms a striplike member having a base portion and a great 19 multiplicity of hooklike projections extending from one surface of said base portion and integral therewith; means 21 for removing said striplike member from said first forming 22 roller at a position spaced from the interface of said 23 first and second rollers such that said hooklike 24 projections are withdrawn from said hook forming cavities without opening said cavities after being cooled by the 26 first forming roller 'to a desired temperature.~~ I have 27 found it possible to introduce into the nip, formed by the 28 two cylinders, various sheet materials which will become 29 an integral part of the striplike material on the side 3O opposite the hooks. Surprisingly, introduction of such 31 materials into the nip along with the molten plastic does 32 not interfere with the operation of the process and while 33 certain cautions and limitations are, of course, 34 desirable, the formation of such in situ laminates proceeds to great advantage. I have found a very wide 36 variety of materials, such as nonwoven fabrics, woven and WO 93/0364it PCT/LS9?J06:5;

~'Cnl=u'.e~~. ":~=ii°_S, rSi~W:=Cl.~.G' yar.':j, St:,rWilS 31'1C
:'lettlr:g S, Sheet S O~ pdper , p 1 a=t1C f il:VS , atetdl 1 1C wiiluOV' SCr een l C
r 3 and almost a:~v mater_a_ _~, _il:nl l ke o; _~:i n sheet form can be handi ed 1i1 thlS manner . The fOrmatl0n O= i_:?°_ ~ tr lDilke ~, l . l. . _ D_aS~lC faS~ener Snee~_ '_nSlLu Wlth a pOrOUS fOrelgn 6 backing most often is accomplished by infusion o. the 7 molten plastic into the struct~~re cfrthe web material 8 where there is an in_iT,a~e intermingling of the plastic 9 within the cores of =he web. In the case of nonoorous films, the films ten: to melt on their surface forming an 11 intermolecular diffusion which forms a strong bond between 12 the sheets. The inclusion of such foreign materials 13 provides a substantial advantage over prior art methods of 14 creating laminates. Such striplike materials contain no foreign material; the bonds are strong and a wide range of 16 materials may be joined in this way. Additionally, the 17 process of adding the backing at the time of creating the 18 hooks offers economic advantages over the more 19 conventional processes of creating a laminate using adhesives or other bonding agents in second stage 21 processes.

24 According to one aspect of the invention, it is provided a method for making plastic hooks utilizing an 26 apparatus comprising a first cooled unitary forming roller 27 having a plurality of hook forming cavities defined in the 28 periphery thereof and extending inwardly therefrom; a second 29 pressure roller positioned for coaction with said first forming roller; means for concurrently rotating said first 31 and second rollers in opposite directions about their 32 generally respective axis; means for forming an extrusion of 33 molten plastic material adjacent said first and second 34 rollers to be directed therebetween at an interface thereof such that said plastic material fills said hook forming 36 cavities and forms a striplike member having a base portion 1 and a great multiplicity of hooklike projections extendina 2 from one surface of said base portion and integral 3 therewith; means for removing said striplike member from 4 said first forming roller at a position spaced from the S interface of sa;~d first and second rollers such that said 6 hooklike projections are withdrawn from said hook forming 7 cavities without opening said cavities after being cooled by 8 said first forming roller to a desired temperature. The 9 improvement comprises a sheet material having an interface surface and an exposed surface into said interface formed by 11 said rollers so that said sheet material becomes an integral 12 part of said striplike member on the side opposite said 13 hooklike projections, said sheet material being introduced 14 into said interface adjacent said second roller with sufficient tension to prevent said sheet material from 16 interfering with the operation of the hook forming process, 17 to form an insitulamir_ate with said striplike member, said 18 exposed surface remaining substantially free of said plastic 19 material.
According to another aspect of the invention it is 21 provided an elongated, strip-form hook and loop fastening 22 member having a base member, a multiplicity of discretely 23 molded hook-shaped engaging elements in the form of 24 projections upstanding therefrom, and on the side of said fastening member opposite said hook-shaped elements, a 26 fibrous surface configured for fastening engagement by said 27 hook-shaped elements, said molded hook-shaped projections 28 each having a stem supported at one end thereof on said base 29 member and a radial extension on the unsupported end of said stem, said hook-shaped projections constructed to engage in 31 fastening relationship with surface elements of said fibrous 32 surface, said hook-shaped projections and said base member 33 being unitarily formed from the same polymeric, resinous 34 material, said fastening member comprising an in-situ laminate wherein said base member of resinous polymer is 36 integrally and continuously joined over an extended region 37 to form a continuous interface with a porous, fibrous, 38 sheet-form material, without the use of adhesives, and on 39 the side of said base member opposite the side containing said molded hook-shaped projections, said extended region at bB
1 which said base member and sheet-form material are joined 2 lying in part directl-_r opposir_e effective upstanding molded 3 hook-shaped projections, the resinous polymer which forms 4 said base member on the side opposite said molded hook-shaped projections being co-mingled with and 6 encapsulating at least some of the surface fibers on one 7 side cf said sheet-form fibrous material throughout the 8 continuous interface while leaving fibrous surface elements 9 on the opposite side of said sheet-form material free of said polymer and exposed for fastening engagement with 11 hook-shaped projections of said fastening member.
12 According to a further aspect of the invention, an 13 apparatus for forming a fastener structure is provided. The 14 apparatus comprises an apparatus for forming a fastener structure comprising: an extruder for delivering a 16 predetermined width of heated, moldable resin; a rigid 17 molding roll having inwardly extending, fixed mold cavities 18 defining fastener elements disposed about the periphery of 19 the molding roll, the molding roll disposed to receive the resin on the periphery of the molding roll; a mechanism 21 arranged to introduce a running length of material to the 22 resin on the exterior of the molding roll, and a mechanism 23 for withdrawing the resulting product from the fixed 24 cavities of the molding roll.
DETAILED DESCRIPTION OF THE INVENTION
26 In order to more fully understand the invention, 27 reference should be had to the following detailed 28 description taken in conjunction with the attached drawings, 29 wherein:
Figure 1 is a schematic sectional view of the 31 apparatus used in the Drior art for creating the plastic 32 fastener hook tape of the prior art.
33 Figure 2 is a schematic sectional view of the 34 apparatus of figure 1 which is modified in accordance with the present invention.
36 Figure 3 is a schematic rear view of the forming roll 37 arrangement of Figure 2.
38 Figure 4 is a schematic cross-sectional view of the 39 hook fastener tape formed by the prior art process.

21~8~~U
1 Figure 5 is a schematic cross-sectional illustration 2 of one embodiment of the invention.
3 Figure 5A is another schematic illustration of the 4 product of Figure 5.
Figure 6 is a schematic cross-sectional illustration 6 of another product of the invention.
7 Figure 7 is a schematic cross-sectional illustration 8 of yet another form of the invention.
9 Figure 8 is a schematic cross-sectional view wherein the bottom layer of the product is a loop fastener.
11 Figure 9 is a schematic cross-sectional view wherein 12 the product includes a layer of foam.
13 Figure 9A shows how the foam layer of Figure 9 can be 14 sheared.
Figure 1 is a cross-sectional view of the apparatus 16 used in the prior art for creating the plastic fastener 17 hook tape of the prior art. Extruder barrel 1 melts and 18 forces the molten plastic 3 through die 2 into the nip 6 19 between base roller 4 and cavity roller S containing cavities to form the hooks of a strip fastener of the well 21 known hook and loop type. The strip fastener material 22 formed in the nip 6 travels around the periphery of the 23 cavity roller 5 and around stripping roller 7, which 24 assists in pulling the formed hook sheet 8 from the cavity roll, and thence to a windup device, not shown:
26 While many methods of feeding sheet material to the 27 forming section of the hook forming device are possible '28 Figure 2 illustrates a device particularly well adapted to 29 that purpose. I have found that by introducing a preformed sheet material l0 into the nip 6 at the same 31 time. molten plastic 3 is forced into the nip 6 to create 32 the strip fastener tape, the sheet material will bond 33 intimately with the fastener to become an integral part of 34 the structure of the strip fastener. As in Figure 1, extruder l forces molten plastic 3 through die 2 into nip 36 6 between rolls 4 and 5. However, I have added at the 21U~55U _8_ 1 edges and around the periphery of backing roller 4 a set 2 of pins which will carry the sheet material 10 into the 3 nip 6 in a flat, unwrinkled state. It is important to 4 maintain a smooth, wrinkle free, properly tensioned sheet in order to form a smooth, even laminate backing for the 6 fastener. To assure proper tensioning and alignment of 7 the secondary sheet material, a roll of the secondary 8 material 10 is mounted on a let off devzce and threaded 9 around diversion roller 11 into a web straightening device 12, well known in the art as typically sold by the Fife 11 Manufacturing Company which assures the edge of the web of 12 sheet material is centered as it is fed onto backing 13 roller 4 around scroll roll 13, composed of ribs of 14 elastomeric material to firmly grip the sheet and impinge it against the backing roller 4 and onto pins 14. Pins 14 16 and roller 4 deliver the web into nip 6 along with molten 17 plastic 3. As the molten plastic 3 is forced by the 18 pressure imposed upon it by the narrow space of the nip 6, 19 it flows into cavities in cavity roller S and also into any pores present in the sheet material being carried by 21 the backing roller 4. In this way the web sheet 10 is 22 intimately joined to the forming hook sheet 8 and becomes 23 an integral part thereof to form a laminated sheet 9.
24 Figure 3 is a rear view of the forming roll stack along line A,A1. The backing roller 4 is supported on shaft 15 26 which is held by bearing 16 in its proper place in side 27 plates, not shown. Bearing 16 is connected to hydraulic 28 lines 19 from a hydraulic pump located remotely from the 29 roll stack. The pins 14 are held by hub 18 which is fitted to the shaft 15 holding the backing roller 4. It 31 is possible to incorporate the pins 14 directly into the 32 backing roller 4 but I prefer to utilize separate pin 33 holding hubs which afford some degree of flexibility in 34 utilizing various size and shape pins for differing sheet materials.

~~~~5~~
1 The customary procedure for. operating the apparatus 2 described is to thread up the secondary backing 10 through 3 the machine, start the extruder 1 so that plastic 3 is 4 flowing smoothly through the die 2 and then move the lips of the die 2 into proximity of the nip 6 between the two 6 forming rollers 4 & 5. The molten plastic is picked up by 7 the backing roller 4 and delivered into the nip 6 as 8 pressure from the hydraulic cylinders 17 raises the 9 backing roller 4 into position. As the gap 6 between the backing roller 4 and the cavity roller S is reduced, the 11 molten plastic 3 flows into the nip 6 and is forced into 12 the open cavities in the forming roll 5. Molten plastic 13 is also forced into the pores of the backing material 22, 14 penetration depending upon the thickness of the backing, the pore structure of the backing, the viscosity of the 16 molten plastic and the pressure of the plastic in the nip.
17 The pressure in the nip 6 is a function of the hydraulic 18 pressure used to close the rollers 4 & 5 and the quantity 19 of material delivered into the nip 6 relative to the quantity consumed in forming the backing and filling the 21 cavities. ' 22 Figure 4 is a cross-section of the hook fastener tape 23 formed by the prior art process. The hook tape consists 24 of a base 20 and hooks 21 projecting from the base. The plastic material forming the tape is essentially uniform 26 throughout. Figure S is one embodiment of a product of 27 this invention created by introducing a nonwoven fabric 28 into the nip of the forming rolls as described above.
29 Base 20 containing hooks 21 projecting therefrom is attached nonwoven fabric 22. At the interface 23 between 31 the two layers the plastic from the fastener flows around 32 and entraps some of the fibers of the nonwoven 22 thereby 33 bonding the nonwoven fabric to form a laminate of the two 34 layers. The nonwoven may be light or heavy, thin or thick, dense or open. The properties of the nonwoven, the 36 pressure exerted and the viscosity of the plastic in. the PCT/US92/062.57 1 nip will determine the degree to which the plastic flows 2 into the fibrous,network, or put alternately, the degree 3 to which the nonwoven will imbed into the plastic. Figure 4 5a is a schematic representation of the laminate of Figure 5 where the layer 23 represents the zone of mixed fabric 6 and plastic. It should be understood this layer is not of 7 uniform cross-section but rather there is a gradient 8 concentration across this layer ranging from no fibers at 9 the bottom of the plastic layer 20 to no plastic at the top of the fiber layer 24. If, on the other hand, the 11 nonwoven web is thick and dense, the plastic will only 12 marginally penetrate into the nonwoven and the back side 13 of the fastener will have the appearance of the free 14 standing fibrous nonwoven. By carefully selecting the fibrous nonwoven web, the plastic for forming the fastener 16 and the operating conditions of the process; it is 17 possible to generate a wide range of products with 18 different degrees of fibers projecting from the surface of 19 the plastic thus providing a wide variety of products directed to many different applications.
21 Figure 6 is a cross-section diagram of yet another 22 product of the present invention where an open, woven, 23 textile reinforcing scrim 25 has been added into the nip 6 24 of the calendar with a slight overfeed to create an excess of the backing fabric. Because of the opera structure the 26 plastic 2O has encapsulated large sections of the fabric 27 scrim 25 yet sections of the fabric come to the surface 26 28 of the fastener. Such a combination can be used to add 29, strength to the plastic tape, but also provide substantial modification of the plastic surface of the fastener.
31 Figure 7 again shows the plastic hook fastener 20 with 32 upstanding hooks 21 laminated to a sheet of paper 27 33 containing on the surface thereof an adhesive layer 28.
34, The adhesive may be any convenient type depending upon the intended use of the product. In this way it is possible 36 to apply reactivatable adhesives, pressure sensitive _11_ 21U~.5~~J
1 adhesives or contact adhesives as the bottom layer of the 2 laminate. Depending upon the nature of the adhesive 3 laminate being applied, care must be taken to prevent the 4 adhesive from being squeezed or distorted by the action of S the pressure of the nip.
6 Figure B shows yet another embodiment of the technique 7 of the present invention wherein the backing layer 29 is 8 the loop side of a hook and loop fastener. Molten plastic 9 3 flows through die 2 and is forced into the pores of the backing of the loop 29 at the interface 27 encapsulating 11 some of the yarns of the loop backing integrally holding 12 the backing with the plastic sheet. In this way is 13 created a product which is well known when created by 14 adhesive bonding but in this embodiment the laminate is created without foreign materials required to hold the 16 layers together. Such back to back products are useful 17 for the manufacturer of so called backstraps well known in 18 the art of hook and loop materials.
19 Figure 9 shows an embodiment of the invention wherein the sheetlike material is a thin polyurethane foam 30.
21 The thin foam 30 can be introduced into the nip of the 22 calender as previously described. The surface of the foam 23 30 is intimately bonded to the plastic of the striplike 24 fastener 20. Figure 9a shows the same arrangement as Figure 9 with the foam 30 attached to the back of the 26 fastener 20 but also illustrates what happens when 27 attempting to remove the foam 30. The bond attaching the 28 foam 30 to the plastic fastener 20 member is greater than 29 the cohesive strength of the foam 30. When attempt is 3f made to separate the foam from the back of the fastener 31 20, the foam 30 splits or tears within the body of the 32 foam 31 leaving a substantial portion of the foam on the 33 back of the plastic strip fastener.
34 The following.examples will aid in further understanding the range and uniqueness of this invention.

WO 93/03644 PGTlUS92106257 2 The apparatus described in U.S. Patent No. 4,775,310 3 was set up to produce a plastic hook product, designated 4 as hook type CFM-15 by the Velcro Group Corporation, using a nylon 12 resin, identified as resin L~2121 sold by the 6 Hercules Chemical Corporation. The melt temperature of 7 the resin measured at the exit end of the extruder was 8 454°F (234°C). The die head temperature was 460°F
9 (238°C). Line speed was 30 feet (9.14 meters) per minute;
tape width was 10 inches (25.4 centimeters); calendering 11 pressure was 2000 ~' gage. The top roll temperature was 12 31°F (-1°C); the forming roll temperature was 55°F
(13°C);
13 and the bottom roll temperature was 37°F (3°C). A roll of 14 nonwoven fabric, Pellon 850 a nylon nonwoven fabric sold by the Freudenberg Company, slit to a 10 inch (25.4 16 centimeters) width was,introduced into the calender at the 17 nip formed between the bottom and forming rolls. After a 18 short initial start up period the fabric processed 19 smoothly through the forming section without difficulty. , The nonwoven fabric was intimately integrated into the 21 plastic of the hook sheet. The laminate thus formed could 22 not be separated into its constituents, one from the 23 other, without destroying the fiber layer. The back of 24 the hook product manifested a smooth, soft fibrous surface substantially different from the surface of the product 26 without the laminated layer.

28 The apparatus described in U.S. Patent No. 4,775,310 29 was set up to produce a plastic hook product designated as hook type CEM-15 by the Velcro Group Corporation, using a 31 co-polyester resin sold by the DuPont Company, a HytrelR
32 8238 with l0% of a master batch fire retardant added to 33- provide fire resistance to the final product. The melt 34 temperature of the polymer, at the end of the extruder, was 475°F (246°C) and the die temperature was 476°F
36 (247°C). The line speed was 30 feet (19.4 meters) per WO 93/03644 ~ ~ ~ ~ ~ j ~ PGT/US92/06257 1 minute. A rall of spunbonded nonwoven fabric, sold as 2 RemayR 2016, weighing 1.35 ounces per square yard with a 3 thickness of 0.009 inches (0.023 centimeters) was slit to 4 10 inches (25.4 centimeters) width and introduced into the nip formed by the bottom and forming rolls of the device 6 as described in Example I. The bottom roll temperature 7 was 50°F (10°C), the forming roll temperature was 50°F
8 (10°C) and the top roll temperature was 90°F (32°C). A
9 tension of 100 pounds (45.36 kilograms) was exerted against the spun bonded fabric in order to prevent 11 wrinkles from developing as the sheet passed into the nip 12 of the calendar, and the bottom roller was overdriven at 13 8% relative to the forming roller. The spunbonded fabric 14 showed minor wrinkling and folding. The tension on the fabric was reduced to 35-40 pounds (15.88-18.14 kilograms) 16 and the overfeed increased to 8.5~'° which reduced the 17 wrinkles to an acceptable level.
18 The laminated product formed consisted of an integral 19 bond between the plastic base of the hook sheet and the upper layer of the spunbonded fabric. The plastic forming 21 the underside of the base of the hook tape was intimately 22 merged with the interstices of the fabric. The spunbonded 23 nonwoVen layer could not be separated from the plastic 24 without being destroying. Even when tearing the laminated sheet, the two layers would not separate. Because of the 26 heavy weight of the spunbond, fibers were apparent on the 27 under surface of the laminate and it was possible to 28 disrupt and loosen fibers from the surface by vigorous 29 rubbing. Even after substantial rubbing, however, a great quantity of fibers, primarily from the upper surface of 3I the spunbond remain attached to the surface of the 32 plastic.

34 Exactly the same configuration as used in Example II
was utilized but the spunbonded nonwoven used was a 36 lighter weight version of Remay, designated as RemayR

~l~~a~~ -14 1 style 2006, weighing 0.6 ounces per square yard with a 2 thickness of 0.006 inches (0.015 centimeters). In order 3 to eliminate wrinkles and folds from the web, tension was 4 reduced to 25 hounds and the same overfeed was used on the bottom roller. The product formed by this combination was 6 similar to that of Example II but the mingling of the 7 polymer into the interstices of the nonwoven was greater 8 than in that example, but it was still possible to raise 9 fibers from the surface by vigorous rubbing, and there were many fibers on the surface of the plastic projecting 11 as a very fine fuzz above the surface.

13 Exactly the same configuration as used in Examples II
14 and III were utilized but the spunbonded nonwoven used was even lighter then in the previous examples. The version 16 of Remay in this example was designated as RemayR style 17 2250, weighing 0.5 ounces per square yard with a thickness 18 of 0.004 inches (0.010 centimeters). In order to 19 eliminate wrinkles and folds from the web, tension was reduced to 20 pounds (9.07 kilograms) and the overfeed was 21 increased to 9% on the bottom roller. The product formed 22 by this combination was similar to those of Examples II
23 and III but the mingling.of the polymer into the 24 interstices of the nonwoven was marginally greater than in 25- Example III. This mingling was enhanced to the extent it 26 was difficult to raise fibers from the surface by vigorous 27 rubbing even when using a coin to abrade the surface. Yet 28 it was possible to clearly see the fibers on the surface 29 as an integral part of the surface and even projecting as a very fine fuzz from the surface.

32 The apparatus described in U.S. Patent No. 4,775,310 33 was set up to produce a plastic hook product, designated 34 as hook type CFM-lS by the Velcro Group Corporation, using a polyester copolymer resin, Hytrel 8238, sold by the 36 DuPont Company. The melt temperature of the polymer at WO 93/03644 ~ ~ O ~ ~ ' ~ P~(: T/US92/06257 1 the end of the extruder was 475°F (246°C) and the die 2 temperature was 4.70°F (243°C). The line speed was 35 feet 3 (8.89 meters) per minute and the tape width was B-9 inches 4 (20.32-22.86 centimeters). The bottom roll temperature of the calender was 85°F (29°C), the forming roll was 40°F
6 (4°C) and the top roll was 40°F (4°C). The calender 7 pressure was 2500 pounds per lineal inch. a roll of 8 tricot knitted fabric, sold by Velcro USA as Loop 3200, 9 was slit to a width of ZO inches (25.4 centimeters) and fed into the calendar at the nip formed by the bottom and 11 forming rolls. As the hook product was formed the molten 12 plastic backing flowed into the interstices of the knitted 13 fabric. The layers forming the laminate between the 14 plastic hook and the tricot fabric could not be separated without destroying the material making up the layer. In 16 spite of the fact that Loop 3200 is a very open structure 17 and the plastic from the hook portion of the laminate 18 surrounded and encapsulated many of the ground yarns of 19 the fabric, a.sufficient number of loops remained extending upwards from the back of the product to enable 21 hooks from the face to tightly engage when a tape of the 22 product was turned such that the hooks were made to face 23 the loops on the reverse side of the structure. In this 24 manner was formed a product commonly known in the trade of hook and loop fasteners as back to back closure.

27 A sample of the Loop 3200 described in Example V was 28 laminated to a 1/8 inch (0.3175 centimeter) thick 29 polyether urethane foam using flame lamination techniques well known in the art. The foam laminate thus formed was 31 slit into a 10 inch (25.4 centimeters) wide roll of 32 material which was fed into the hook forming device 33 described~in Example V. In this instance, however, the 34 resin used was a polyethylene resin produced by the EXXON
Chemical Company sold as Escorene LL6301.57. The melt 36 temperature of the polymer at the end of the extruder was 2~08~~U -16-1 420°F (216°C) and the die temperature was also 420°F
2 (216°C). The calender pressure was 1250 pounds per lineal 3 inch and the bottom roll temperature was 70°F (21°C), the 4 forming roll temperature was 50°F (10°C) and the top roll S temperature was 90°F (32°C). The line speed was 30 feet 6 (7.62 meters) per minute. The foam side of the foam loop 7 laminate was orientated to join with the plastic backing 8 of the hook portion of the product and the loop portion 9 faced outwardly from the bottom side of the groduct. A
tenacious laminate resulted. The layers of the laminate 11 could be separated by tearing the loop portion away from 12 the plastic portion and the rupture between the layers 13 occurred along the foam interface leaving a thin layer of 14 foam on both the plastic and the loop. The force necessary to separate the layers was approximately 2 16 pounds per inch of width. The use of the foam as an 17 intermediate layer yielded a product with soft loop 18 backing which readily engaged the hooks on the face side 19 of the product when turned in back to face relationship.
The degree of contamination of the loop structure as 21 occurred in Example II was essentially eliminated and the 22 presence of the foam layer .provided a soft cushioning to 23 assist in the hook loop engagement.

Using the process configuration of Example VI a sample 26 of a different loop, Velcro loop style 3610, was 27 introduced in place of the loop used in Example V. Loop 28 3610 is a relatively heavy weight loop fabric weighing in 29 the range of 8.02 to 9.95 ounces per square yard and having a nominal thickness range of 0.062 to 0.087 inches 31 (0.1575 to 0.2210 centimeters). The loop passed through 32 the nip without difficulty using a tension of I00 pounds 33 (45.36 kilograms) on the loop fabric, on overfeed on the 34 bottom roll of 8% and a nip pressure of 1250 pounds per lineal inch. The plastic from the forming hooks mingled 36 and encapsulated many of the fibers on the back side of 37 the loop fabric thus creating a substantial bond holding _17_ 2~~J8 ) )U
1 the loop fabric thus creating a substantial bond holding 2 the two layers together. Because Loop 3610 is such a 3 substantial product it was possible to work loose one 4 corner of the fabric from the plastic and by so doing test the bond strength of the laminate. The peel separating 6 force averages 6 pounds (2.72 kilograms) to delaminate the 7 two layers. The loop face of the Loop 3610 appeared to be 8 unaffected by the laminating process and when the laminate 9 was turned on itself such that the hooks engaged the loop in face to face relationship substantial gripping was 11 achieved. The performance of the back to back closure 12 thus formed was comparable to the performance of an 13 independently formed hook product formed from the same 14 polymer against Loop 3610.
1~ EXAMPLE VIII
16 Using the process configuration of Example VI, a 17 sample of a different loop, Velcro loop, style 3003, was 18 introduced in place of the loop used in Example VII. Loop 19 3003 is a circular knit fabric with a substantially high loop pile on one surface, a relatively heavy weight of 9 21 ounces per square yard and a nominal thickness of 0.10 22 inches (0.254 centimeters). The loop gassed through the 23 nip with some difficulty due to its bulk but the sample 24 formed provided an extremely high degree of mingling of the plastic resin with the backing fibers of the loop 26 fabric. The bond was sufficiently strong. The two layers 27 could not be separated for testing with destroying one or 28 both of the layers. The pile fibers of the loop fabric 29 did not appear to be affected by the laminating process and the closure performance of the back to back product 31 thus formed was essentially the same as the closure 32 performance of a comparable hook product produced 33 independently tested against an independent loop of the 34 same style.

2 The extrusion. configuration of Examples VI through 3 VIII using Escorene polyethylene was used to create yet 4 another laminate in which the web introduced into the nip S between the bottom roll and the forming roll was kraft 6 paper. The paper bonded tightly to the back of the hook 7 tape and could not be separated from the laminate without 8 being destroyed. Penetration of the plastic into the 9 paper was limited as shown by the ability to delaminate the paper from itself leaving a thin veil of paper fibers 11 still attached to the plastic.

13 In place of the standard kraft paper of Example IX, a 14 length of kraft paper containing, on one surface; thereof, a water activable adhesive was introduced into the nip 16 between the bottom roll and the forming roll with the 17 adhesive side of the paper away from the plastic of the 18 hook tape. The paper bonded tightly to the plastic of the 19 hook, in a manner the same as described in Example IX.
The paper could be torn from the laminate leaving a veil 21 of fine paper fibers on the plastic surface. The 22 interesting facet to this laminate was the fact the 23 adhesive layer on the back of the hook tape could be 24 activated by applying water to the adhesive and the adhesive used to attach the hook laminate to other 26 objects. Small squares of the laminate so formed were 27 activated as one would activate a postage stamp, with the 28 tongue, and the small square of hook was easily attached 29 to other objects. Appropriate loops attached to other objects Were in this way releasably attached to each 31 other. ~ w 33 The extrusion configuration of Examples VI through IX
34 using Escorene polyethylene without any additives was used to create yet another laminate in which the web, .
36 introduced into the nip between the bottom roll and the WO 93/03644 ~ ~ ~ ~ ~ ~ ~ PGT/US92/06257 1 forming roll, was a printed high density polyethylene 2 film. The film bonded to the back of the hook tape but 3 could be peeled from the laminate with a relatively light 4 force of less than 0.5 pounds per inch of width. An especially interesting aspect of this laminate was that 6 the printing could be read clearly through the slightly 7 opaque face of the hook tape. The HD polyethylene printed 8 message was in no way distorted and was only slightly less 9 bright than the original printed message of the film.
EXAMPLE XII
11 In place of the printed polyethylene film of Example 12 XI a page from a Rand-McNalley Road Atlas, made of paper 13 with a road map printed on each side, was introduced into 14 the nip between the bottom roller and the forming roller.
The paper bonded tightly to the plastic polyethylene hook 16 sheet that it could not be separated from the plastic 17 without destroying the paper. The fine lines of the map 18 were visible through the slightly opaque plastic film 19 forming the hook tape. The paper sheet was printed on both sides and it was also possible to read the map on the 23 back side of the hook sheet. The assembly with the 22 printed matter on its reverse side could be attached to 23 display boards with loop material covers. The combination 24 formed an interesting method for affixing display material 25' to other objects. Conversely, it is possible to make a 26 display surface with the hooks extending outward from the 27 display surface which can be read through the hook tape to 28 which objects can be attached. In this way, the design 29 portrayed on the display is, read through the hooks and sections of the display can be covered up by attaching 31 loop material to the exposed hooks.

33 The apparatus as described in previous examples was 34 set up to process polypropylene resin designated as Ferro HDPS 0250D, a fire retardant polypropylene resin from 36 Ferro Chemical Company. The melt temperature was 400°F

~~'~~'~ )~
1 (204°C) and the die temperature was also 400°F (204°C).
2 The line speed was 30 fpm (19.14 mpm) and the nip pressure 3 was 1500 pounds per linier inch. After the process was 4 operating and forming an appropriate hook product a length of ether type polyurethane foam .065 inches (0.165 6 centimeters) thick, was introduced into the nip formed 7 between the bottom roll and the forming roll. The foam 8 bonded tenaciously to the plastic underside of the hook 9 sheet and could not be removed without destroying the foam layer. In the process of being laminated, the foam was 11 substantially compressed but remained tightly bonded to 12 the polypropylene and provided a soft, resilient backing 13 to the. polypropylene hook tape which substantially changes 14 the aesthetic and tactile response to the hook product.

Claims (94)

1. A fastener product having a multiplicity of fastener elements extending from a strip-form base and a performed material bonded to at least part of the strip-form base, the product produced by the method comprising:
continuously introducing molten resin to a gap defined adjacent a peripheral surface of a rotating mold roll, such that the resin forms at least a part of the strip-form base of the product at the peripheral mold roll surface and fills an array of fixed cavities defined in the rotating mold roll to form portions of the fastener elements as projections extending from a side of the sheet-form base;
while introducing a preformed material to resin on the mold roll under conditions selected to cause the preformed material to become permanently bonded by the resin to at least a portion of the product;
solidifying the resin; and stripping the solidified resin from the peripheral surface of the mold roll by pulling the projections from their respective cavities.
2. The product of claim 1 wherein the preformed material comprises a non-woven fabric.
3. The product of claim 1 wherein the preformed material is a reinforcing scrim.
4. The product of claim 1 wherein the preformed material is porous, the resin infusing into pores of the sheet material as the resin and material are bonded.
5. The product of claim 1 wherein the preformed material comprises paper.
6. The product of claim 1 wherein the preformed material comprises foam.
7. The product of claim 1 wherein said material is lengthwise-continuous and introduced as at least one running length.
8. The product of claim 1 wherein the gap is defined between the mold roll and a counter-rotating pressure roll.
9. The product of claim 8 wherein the material is lengthwise-continuous and introduced as at least one running length which is delivered to and progresses along at least a portion of the pressure roll before being introduced to the resin.
10. The product of claim 1 wherein stripping the resin from the peripheral surface of the mold roll includes passing the product about a stripping roll.
11. The product of claim 1 wherein the cavities are shaped to form fastener elements and wherein the projections comprise an array of molded fastener elements.
12. The product of claim 1 wherein the cavities are shaped to form fastener elements adapted to engage loops.
13. The product of claim 1 wherein the preformed material forms a backing of the product.
14. The product of claim 1 wherein the preformed material has a first region encapsulated within resin of the base of the product, and a second region free of resin of the base of the product.
15. The product of claim 1 wherein the preformed material has loops or fibers exposed in the product for engaging the fastener elements.
16. The product of claim 1 wherein the preformed material is laminated to resin of the base in the gap.
17. The product of claim 1 wherein the preformed material extends across the back of the product.
18. The product of claim 1 wherein the preformed material is selected from the group consisting of non-woven fabrics, woven and knitted textiles, reinforcing yarns, scrims and nettings, sheets of paper, plastic films and metallic window screening.
19. The product of claim 1 wherein the preformed material is introduced to the resin at the gap.
20. The product of claim 1 wherein the resin is solidified downstream of the point of introduction of the preformed material to the resin.
21. A fastener product comprising resin forming both a portion of a strip-form base and an array of loop-engageable fastener elements having molded stems rising from a broad surface of the strip-form base;
and a longitudinally continuous sheet material permanently bonded to the resin during formation of the strip-form base and the molding of the stems by introducing the sheet material to the resin before the base solidifies.
22. The product of claim 21 wherein the sheet material forms a backing of the product, on a broad side of the strip-form base opposite the side from which the stems extend.
23. The product of claim 21 wherein the sheet material carries loops for engagement by the fastener elements.
24. The product of claim 21 wherein the fastener elements are of form molded and cooled simultaneously with contiguous resin of the strip-form base.
25. A method of making a fastener product having a great multiplicity of fastener clements extending from a strip-form base, the method comprising:
continuously introducing molten resin to a gap formed along a peripheral surface of a rotating mold roll, such that the resin forms at least a part of the strip-form base of the product at the peripheral mold roll surface and fills an array of fixed cavities defined in the rotating mold roll to form portions of the fastener elements as projections extending from a side of the sheet-form base;
while continuously joining a preformed material to the resin forming the sheet-form base, while the resin forming the base is disposed in the gap formed along the peripheral surface of the mold roll and under conditions selected to cause the material to become permanently bonded to the resin of the base and become part of the strip-form base of the product;
solidifying the resin; and stripping the solidified resin from the peripheral surface of the mold roll by pulling the projections from their respective cavities.
26. The method of claim 25 wherein said material is lengthwise-continuous and introduced as a running length.
27. The method of claim 25 wherein the gap is defined between the mold roll and a counter-rotating pressure roll.
28. The method of claim 27 wherein the material is lengthwise-continuous and introduced as a running length which is delivered to and progresses along at least a portion of the pressure roll before being introduced to the resin.
29. The method of claim 25 wherein stripping the product from the peripheral surface of the mold roll includes passing the product about a stripping roll.
30. The method of claim 25 wherein the cavities are shaped to form fastener elements and wherein the projections comprise an array of molded fastener elements.
31. The method of claim 25 wherein the cavities are shaped to form fastener elements adapted to engage loops.
32. The method of claim 25 wherein the preformed material forms a backing of the product.
33. The method of claim 25 wherein the preformed material has a first region encapsulated within resin of the base of the product, and a second region free of resin of the base of the product.
34. The method of claim 25 wherein the preformed material has loops or fibers exposed in the product for engaging the fastener elements.
35. The method of claim 34 wherein the preformed material comprises a non-woven fabric.
36. The method of claim 25 wherein the preformed material is laminated to resin of the base in the gap.
37. The method of claim 25 wherein the preformed material is selected from the group consisting of non-woven fabrics, woven and knitted textiles, reinforcing yarns, scrims and nettings, sheets of paper, plastic films and metallic window screening.
38. The method of claim 25 wherein the preformed material is porous, the resin infusing into pores of the sheet material as the resin and material are bonded.
39. The method of claim 25 wherein the preformed material is introduced to the resin at the gap.
40. The method of claim 25 wherein the resin is solidified downstream of the point of introduction of the preformed material to the resin.
41. A method of making a fastener product having a great multiplicity of fastener elements extending from a strip-form base, the method comprising:
continuously introducing molten resin to a gap formed along a peripheral surface of a rotating mold roll, such that the resin forms at least a part of the strip-form base of the product at the peripheral mold roll surface and fills an array of fixed cavities defined in the rotating mold roll to form an array of molded projections extending from a side of the sheet-form base; while continuously joining a preformed material to the resin forming the sheet-form base while the resin forming the base is disposed in the gap formed along the peripheral surface of the mold roll and the cavities are filled with resin, under conditions selected to cause the preformed material to become permanently bonded to resin of the base and become part of the product;
cooling the resin; and stripping the cooled resin from the peripheral surface of the mold roll by pulling the projections from their respective cavities.
42. In a method for making plastic hooks utilizing an apparatus comprising a first cooled unitary forming roller having a plurality of hook forming cavities defined in the periphery thereof and extending inwardly therefrom;
a second pressure roller positioned for coaction with said first forming roller; means for concurrently rotating said first and second rollers in opposite directions about their generally respective axis;
means for forming an extrusion of molten plastic material adjacent said first and second rollers to be directed therebetween at an interface thereof such that said plastic material fills said hook forming cavities and forms a striplike member having a base portion and a great multiplicity of hooklike projections extending from one surface of said base portion and integral therewith;
means for removing said striplike member from said first forming roller at a position spaced from the interface of said first and second rollers such that said hooklike projections are withdrawn from said hook forming cavities without opening said cavities after being cooled by said first forming roller to a desired temperature, the improvement comprising, introducing a sheet material having an interface surface and an exposed surface into said interface formed by said rollers so that said sheet material becomes an integral part of said striplike member on the side opposite said hooklike projections, said sheet material being introduced into said interface adjacent said second roller with sufficient tension to prevent said sheet material from interfering with the operation of the hook forming process, to form an insitulaminate with said striplike member, said exposed surface remaining substantially free of said plastic material.
43. The method of claim 42 wherein the sheet material is a nonwoven fabric.
44. The method of claim 42 wherein the sheetlike material is a textile fabric.
45. The method of claim 44 wherein the textile fabric is woven.
46. The method of claim 42 wherein the sheet material is a polyurethane foam.
47. The method of claim 42 wherein the sheet material is a plastic film.
48. The method of claim 42 wherein the sheet material is paper.
49. The method of claim 42 wherein the sheet material has loops on one side thereof said loops extending away from the base of said striplike member on the side opposite the side containing said hooklike projections.
50. The method of claim 42 wherein the sheet material contains printed matter and said plastic material is sufficiently transparent such that said printed matter is visible through said transparent plastic.
51. The method of claim 42 wherein the sheet material contains an adhesive on one side thereof said adhesive extending away from the base of said striplike member on the side opposite the side containing said hooklike projections.
52. In a method for making plastic hooks utilizing an apparatus comprising a first cooled unitary forming roller having a plurality of hook forming cavities defined in the periphery thereof and extending inwardly therefrom;
a second pressure roller positioned for coaction with said first forming roller; means for concurrently rotating said first and second rollers in opposite directions about there generally respective axis;
means for forming an extrusion of molten plastic material adjacent said first and second rollers to be directed therebetween at an interface thereof such that said plastic material fills said hook forming cavities and forms a striplike member having a base portion and a great multiplicity of hooklike projections extending from one surface of said base portion and integral therewith;
means for removing said striplike member from said first forming roller at a position spaced from the interface of said first and second rollers such that said hooklike projections are withdrawn from said hook forming cavities without opening said cavities after being cooled by the first forming roller to a desired temperature, the improvement comprising passing sheet material having an exposed and an interface surface through web straightening means to assure said sheet material is properly centered relative to said backing pressure roller, impinging said sheet material onto securing means located around the periphery of said backing pressure roller, and introducing said sheet material into the interface between said first and second rollers while conveying said sheet material with proper alignment and in a smooth, undistorted fashion but sufficiently retaining said sheet material said backing pressure roll so that it is capable of withstanding the dynamic pressures created as said molten plastic flows and becomes an integral portion of said striplike fastening member on the side opposite from said hooklike projections to form an insitu laminate with said striplike member, said exposed surface remaining substantially free of said plastic material.
53. The method of claim 52 wherein the sheet material is a nonwoven fabric.
54. The method of claim 52 wherein the sheet material is a textile fabric.
55. The method of claim 54 wherein the textile fabric is woven.
56. The method of claim 52 wherein the sheet material is a polyurethane foam.
57. The method of claim 52 wherein the sheet material is a plastic film.
58. The method of claim 52 wherein the sheet material is paper.
59. The method of claim 52 wherein the sheet material has loops on one side thereof said loops extending away from the base of said striplike member on the side opposite the side containing said hooklike projections.
60. The method of claim 52 wherein the sheet material contains printed matter and said plastic material is sufficiently transparent such that said printed matter is visible through the transparent plastic from the side containing the hooklike projections.
61. The method of claim 52 wherein the sheet material contains an adhesive on one side thereof said adhesive extending away from the base of said striplike member on the side opposite the side containing said hooklike projections.
62. An elongated, strip-form hook and loop fastening member having a base member, a multiplicity of discretely molded hook-shaped engaging elements in the form of projections upstanding therefrom, and on the side of said fastening member opposite said hook-shaped elements, a fibrous surface configured for fastening engagement by said hook-shaped elements, said molded hook-shaped projections each having a stem supported at one end thereof on said base member and a radial extension on the unsupported end of said stem, said hook-shaped projections constructed to engage in fastening relationship with surface elements of said fibrous surface, said hook-shaped projections and said base member being unitarily formed from the same polymeric, resinous material, said fastening member comprising an in-situ laminate wherein said base member of resinous polymer is integrally and continuously joined over an extended region to form a continuous interface with a porous, fibrous, sheet-form material, without the use of adhesives, and on the side of said base member opposite the side containing said molded hook-shaped projections, said extended region at which said base member and sheet-form material are joined lying in part directly opposite effective upstanding molded hook-shaped projections, the resinous polymer which forms said base member on the side opposite said molded hook-shaped projections being co-mingled with and encapsulating at least some of the surface fibers on one side of said sheet-form fibrous material throughout the continuous interface while leaving fibrous surface elements on the opposite side of said sheet-form material free of said polymer and exposed for fastening engagement with hook-shaped projections of said fastening member.
63. The elongated strip-form hook-and-loop fastening member of claim 62 wherein the fibrous sheet-form material is a nonwoven fabric.
64. The elongated, strip-form hook-and-loop fastening member of claim 62 wherein the fibrous sheet-form material is a woven textile fabric.
65. The elongated, strip-form hook-and-loop fastening member of claim 62 wherein the fibrous sheet-form material is a loop-bearing fabric.
66. The elongated, strip-form hook-and-loop-type fastening member of claim 65 wherein the loop-bearing fabric is woven.
67. The elongated, strip-form hook-and-loop-type fastening member of claim 65 wherein the loop-bearing fabric is knitted.
68. A method of making a striplike hook fastener component comprised of plastic material, the component having a base portion and a great multiplicity of hooklike projections extending from and integral with one surface of said base portion, laminated with a sheet material capable of performing a function other than serving as structure of the hook fastener component, the method comprising:
providing a cooled, rigid rotating forming roller having inwardly extending, fixed, hook-forming cavities defined in its periphery, to the exterior of said forming roller, applying molten plastic material for filling the hook forming cavities and providing said base portion, introducing to said roller a sheet material having a function other than serving as structure of the fastener component to the molten plastic material on the exterior of the forming roller under pressure conditions that cause said sheet material to become united with said plastic material, thus forming an in situ laminate, the side of said sheet material directed oppositely from the side united with said plastic material remaining substantially free of said plastic material, and, after the molten plastic is cooled to a desired temperature, withdrawing said laminate from said forming roller including withdrawing said hooklike projections from said hook forming cavities without opening said cavities.
69. The method of claim 68 wherein the sheet material is a woven, nonwoven or knitted fabric, polyurethane foam, plastic film, paper, reinforcing yarns, scrims, nettings or metallic window screening.
70. The method of claim 68 wherein the sheet material has loops on one side thereof, said loops extending away from the base of said striplike hook fastener on the side opposite the side having said hooklike projections.
71. The method of claim 68 wherein the sheet material contains printed matter and said plastic material is sufficiently transparent that said printed matter is visible through said transparent plastic.
72. The method of claim 68 wherein the sheet material contains an adhesive on one side thereof said adhesive extending away from the base of said striplike hook fastener on the side opposite the side having said hooklike projections.
73. A method of continuously forming a fastener structure comprising:
delivering a predetermined width of heated, moldable, extruded resin to the surface of a rigid rotating molding roll under conditions causing the resin to fill inwardly extending, fixed cavities defining fastener elements disposed about the periphery of the rotating molding roll to form fastener elements integral with a sheet-form base layer of the resin lying on the exterior of the molding roll; and delivering a running length of preformed material to resin forming the base layer to form a composite structure;
and thereafter withdrawing the composite structure from the molding roll including withdrawing the fastener elements from the rigid cavities of the fixed molding roll.
74. The method of claim 73 further comprising cooling the molding roll and allowing the composite structure to progress along the molding roll to cool.
75. The method of claim 73 wherein the preformed material is delivered to the resin at the point that the resin is delivered to the molding roll.
76. The method of claim 75 wherein the molding roll and a pressure roll define a nip, and wherein the resin and the preformed material enter the nip simultaneously.
77. The method of claim 73 wherein the sheet-form material is delivered to and progresses along at least a portion of the pressure roll before being delivered to the resin.
78. The method of claim 73 wherein removing the composite structure includes passing the composite structure about a stripping roll.
79. The method of claim 78 wherein the stripping roll is positioned to receive the composite structure from said molding roll at a point spaced a substantial arc along the molding roll from the point of delivery of the resin to the molding roll a distance away from the molding roll.
80. The method of claim 73 wherein the preformed material is delivered to the resin at a faster rate than the resin is delivered to the molding roll.
81. An apparatus for forming a fastener structure comprising:
an extruder for delivering a predetermined width of heated, moldable resin;
a rigid molding roll having inwardly extending, fixed mold cavities defining fastener elements disposed about the periphery of the molding roll, the molding roll disposed to receive the resin on the periphery of the molding roll;
a mechanism arranged to introduce a running length of material to the resin on the exterior of the molding roll, and a mechanism for withdrawing the resulting product from the fixed cavities of the molding roll.
82. The apparatus of claim 81 further comprising a pressure roll located so that the running length of material is pressed into the resin as the resin is received on the molding roll.
83. The apparatus of claim 81 further comprising a stripping roller positioned to receive the resulting product from said molding roll at a point spaced a substantial arc along the molding roll from the point of delivery of the resin to the molding roll.
84. The apparatus of claim 81 further comprising a die disposed between the extruder and the molding roll to form the resin into a sheet form.
85. The apparatus of claim 81 further comprising a roll for a running length of material disposed to deliver the running length of material to a pressure roll.
86. The apparatus of claim 85 wherein the roll for the running length of material is arranged to deliver the running length of material at a rate faster than the molding roll receives the resin.
87. The apparatus of claim 81 wherein the molding roll is maintained at a controlled temperature.
88. The apparatus of claim 87 wherein the molding roll is cooled, thereby cooling the resin delivered to the molding roll.
89. The apparatus of claim 81 in which the mechanism arranged to introduce the running length of material is constructed to apply the material with pressure against resin on the periphery of the molding roll overlying the fixed mold cavities.
90. A method of making a striplike fastener member of plastic material having a base portion and a great multiplicity of hooklike projections extending from and integral with one surface of said base portion, the method comprising:
providing a cooled, rigid forming roller having inwardly extending, fixed hook forming cavities defined in its periphery, the fixed cavities defining fastener hooks constructed to engage loops or fiber for hook and loop fastening, providing an apparatus for coacting with the forming roller, including an extruder, for extruding molten plastic material to fill the hook forming cavities and apply a layer of molten plastic material to the exterior of the forming roller, introducing a running length of a material to the molten plastic material on the exterior of the forming roller at a nip formed by a roller coasting with said forming roller so that said material is applied under pressure and becomes united with said plastic material on the side of the plastic material opposite said hooklike projections, and removing said striplike fastener from said forming roller at a position spaced from the nip of such that said hooklike projections are withdrawn from said hook forming fixed cavities in form suitable for hook and loop fastening.
91. The method of claim 90 wherein the running length of material is nonwoven fabric, woven textile, knitted textile, reinforcing yarns, scrim, netting, paper, plastic film, or metallic window screening.
92. The method of claim 90 wherein the running length of material is a sheet material having loops on one side thereof, said loops extending away from the base of said striplike member on the side opposite the side having said hooklike projections.
93. The method of claim 90 wherein the running length of material is printed matter and said plastic material is sufficiently transparent that said printed matter is visible through said transparent plastic.
94. The method of claim 90 wherein the running length of material comprises a sheet material containing an adhesive on one side thereof said adhesive extending away from the base of said striplike member on the side opposite the side having said hooklike projections.
CA 2108550 1991-08-16 1992-07-28 Laminated hook fastener and method of making same Expired - Lifetime CA2108550C (en)

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ES2142318T3 (en) 2000-04-16 grant
US5260015A (en) 1993-11-09 grant
US5744080A (en) 1998-04-28 grant
EP0934706A2 (en) 1999-08-11 application
EP0585409A1 (en) 1994-03-09 application
EP0934706A3 (en) 1999-08-25 application
US20010001283A1 (en) 2001-05-17 application
DE69230288D1 (en) 1999-12-16 grant
DE69233564D1 (en) 2005-12-29 grant
US20040187275A1 (en) 2004-09-30 application
EP0585409B1 (en) 1999-11-10 grant
CA2108550A1 (en) 1993-02-17 application
JPH06509727A (en) 1994-11-02 application
US6174476B1 (en) 2001-01-16 grant
EP0934706B1 (en) 2005-11-23 grant
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WO1993003644A1 (en) 1993-03-04 application
ES2249869T5 (en) 2010-08-19 grant
EP0934706B2 (en) 2010-04-21 grant
US5518795A (en) 1996-05-21 grant
JP3673811B2 (en) 2005-07-20 grant
DE69230288T2 (en) 2000-07-20 grant
DE69233564T3 (en) 2011-03-03 grant
US6737147B2 (en) 2004-05-18 grant
US6248419B1 (en) 2001-06-19 grant
DE69233564T2 (en) 2006-07-13 grant

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