Touch Fastener Products
First Claim
Patent Images
1. A method of forming a molded foam article comprising:
- providing a mold cavity having a shape corresponding to the shape of the article to be molded, wherein the mold cavity comprises a tapered trench having angled side walls;
providing a touch fastener comprising a base, a plurality of fastener elements extending from a lower face of a central portion of the base in an array disposed between lateral selvedges of the base;
positioning the touch fastener along the trench with the selvedges deflected from their unloaded position to extend along the trench side walls in face-to-face contact; and
delivering a foamable resin into the mold cavity to form the molded article, the deflected selvedges resisting intrusion of foamable resin into the array of fastener elements.
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Accused Products
Abstract
Touch fasteners for use as mold inserts in molding seat foam buns include selvedges that deflect under pressure to engage a mold surface in face-to-face contact. Another touch fastener includes a base with an exposed thermally activatable resin surface that has a softening point low enough to be activated by the exothermic foaming reaction to adhere the fastener in the foam bun.
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Citations
36 Claims
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1. A method of forming a molded foam article comprising:
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providing a mold cavity having a shape corresponding to the shape of the article to be molded, wherein the mold cavity comprises a tapered trench having angled side walls; providing a touch fastener comprising a base, a plurality of fastener elements extending from a lower face of a central portion of the base in an array disposed between lateral selvedges of the base; positioning the touch fastener along the trench with the selvedges deflected from their unloaded position to extend along the trench side walls in face-to-face contact; and delivering a foamable resin into the mold cavity to form the molded article, the deflected selvedges resisting intrusion of foamable resin into the array of fastener elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of forming a molded foam article, the method comprising:
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providing a mold cavity having a shape corresponding to a desired shape of the article to be molded; positioning a touch fastener in the mold cavity, the touch fastener comprising a sheet-form base comprising an upper face and a lower face, a plurality of fastener elements disposed on the lower face of the sheet-form base, and a thermally-activatable resin exposed on the upper face of the sheet-form base; and delivering a foamable resin into the mold cavity causing the resin to foam in an exothermic reaction, wherein the reaction generates sufficient heat to activate at least an outer surface of the activatable resin to adhere the touch fastener to the foam. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification