Molding touch fastener elements
First Claim
Patent Images
1. A product comprising:
- a base layer and a multiplicity of protruding hollow formations, the protruding formations unitarily formed with and extending upward from an upper surface of the base layer, the hollow formations and base layer formed of thermoplastic applied under pressure against a forming surface having forming cavities and the base layer having a back surface including interior surfaces of the hollow formations comprising a parting surface from which a second thermoplastic filling the hollow formations has been peeled.
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Abstract
A product comprising a base layer and a multiplicity of protruding hollow formations, the protruding formations unitarily formed with and extending upward from an upper surface of the base layer, the hollow formations and base layer formed of thermoplastic applied under pressure against a forming surface having forming cavities and the base layer having a back surface including interior surfaces of the hollow formations comprising a parting surface from which a second thermoplastic filling the hollow formations has been peeled.
34 Citations
54 Claims
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1. A product comprising:
a base layer and a multiplicity of protruding hollow formations, the protruding formations unitarily formed with and extending upward from an upper surface of the base layer, the hollow formations and base layer formed of thermoplastic applied under pressure against a forming surface having forming cavities and the base layer having a back surface including interior surfaces of the hollow formations comprising a parting surface from which a second thermoplastic filling the hollow formations has been peeled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of forming a sheet-form product, the method comprising:
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providing a forming surface having a multiplicity of inwardly extending forming cavities;
forming a multi-layer sheet in the interior of which is a parting surface defined by materials of limited compatibility, material of the sheet lying on each side of the parting surface having peelable tensile strength;
pressing the multi-layer sheet against the forming surface to cause the multi-layer sheet to substantially conform to and fill the cavities; and
peeling the multi-layer sheet apart at the parting surface, whereby material directly engaging the forming surface defines a sheet-form member having a multiplicity of hollow formations. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A hook component of a hook and loop fastener system, the hook component comprising:
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a field of hollow loop-engageable elements projecting from a base layer;
a flowable substance within the hollow elements; and
a dispensing feature enabling dispensing of the flowable substance in response to deformation of the loop-engageable elements. - View Dependent Claims (38, 39, 40, 41, 42)
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43. A method of forming a sheet form product, the method comprising:
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forming a multi-layer sheet having a first layer forming a first broad surface of the multi-layer sheet;
pressing the multi-layer sheet against a forming surface with the first layer contacting the forming surface such that the multi-layer sheet substantially conforms to and fills a multiplicity of inwardly extending forming cavities in the forming surface;
removing the multi-layer sheet from the forming surface;
removing the first layer from remaining portions of the multi-layer sheet, the remaining portions of the multi-layer sheet defining a member having stems of fastener elements integrally molded with and extending from a sheet-form base. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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Specification