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US 7,223,314 B2Granted
Stretchable fastener
AssigneeVelero Industries B.V.
InventorGeorge A. Provost
Life of this patent
Estimating the term…
Abstract
Stretchable fastener products are formed by providing a sheet-form fastener tape, slitting the fastener tape to form longitudinally extending bands of fastener tape and separating the longitudinally extending bands to space the fastener tape bands transversely apart. The spaced bands are attached to a sheet form elastic web to form a stretchable fastener product. In some examples, the stretchable fastener product is formed continuously in conjunction with manufacture of the sheet-form fastener tape.
Claims31
A method of forming a stretchable fastener product comprising:
- providing a sheet-term fastener tape comprising a base of synthetic resin, and an array of loop-engagable fastener elements integrally molded with and extending from a first surface of the base;
- processing said fastener tape including slitting to form longitudinally extending bands of fastener tape and to space said fastener bands transversely apart;
- and
- attaching said transversely spaced apart fastener bands to a sheet form elastic web to form the stretchable fastener product, wherein the attaching of the transversely spaced apart fastener bands to the elastic web comprises supporting the spaced apart fastener bands on a support roll wherein the loop-engageable fastener elements are in contact with a surface of the support roll, while simultaneously pressing and heating the elastic web against a second surface of the base of the fastener bands, the support roll having circumferential recesses configured to support the fastener bands and to position the second surface of the base of the fastener bands at the surface of the support roll.
1 more element
A method of forming a stretchable fastener product comprising:
- introducing moldable first material to a continuously rotating mold roll to form a sheet-form fastener having a base conforming to a surface of the mold roll and multiple rows of molded fastener elements integral with a first surface of the base, the rows extending in a longitudinal direction of the sheet-form fastener, the fastener elements formed by mold cavities of the mold roll;
- slitting the thus-formed sheet-form fastener into longitudinally extending fastener bands carrying multiple rows of the fastener elements;
- removing the fastener bands froms the mold roll, and passing the fastener bands through a separating device that develops space between the adjacent fastener bands transversely to the longitudinal direction;
- and subsequently
- introducing the fastener bands onto a surface of a support roll having circumferential recesses configured to support the fastener bands and to position a second surface of the base of the fastener bands at the surface of the support roll, and joining a web of a second material to the fastener bands by pressure and heat while the fastener bands are On the support roll, the second material being resiliently extensible to form the stretchable fastener product.
2 more elements
Dependencies are inferred from the claim text.