Method for making formed fabric treatments
First Claim
1. A method for making a molded fabric treatment, comprising:
- a) providing a non-woven fabric backing sheet which comprises, at least in part, heat-fusible fibers and a heat-activated binder;
b) providing a fabric facing sheet and a heat- or pressure-activated adhesive layer;
c) placing together and aligning the facing sheet and the backing sheet with the adhesive layer therebetween to form a lay-up having a periphery;
d) bladder molding the lay-up against a tool to form the treatment such that the periphery of the lay-up is forced into a peripheral undercut in the tool to form the lay-up into a treatment having a central portion with a substantially continuous undercut affixing portion about the periphery of the treatment; and
e) removing the treatment from the tool.
7 Assignments
0 Petitions
Accused Products
Abstract
A molded fabric treatment includes an integral undercut or inturned peripheral flange for affixing the treatment to the structure to be treated. The treatments have a conventional, decorative, woven polyester fabric (of the type currently used in conventional office divider screen systems), or fabrics comprising other synthetic or natural fibers, bonded with adhesive to a relatively stiff moldable non-woven polyester fiber backing. The treatments are formed in a membrane or bladder press in which a flexible membrane presses the fabric and fiber composite against a form or mold that includes an undercut edge which, in cooperation with the press membrane, forms undercut flanges about the periphery of the treatment. The undercut or inturned flange may then be "snapped" over a corresponding mounting lip on the structure to be treated.
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Citations
41 Claims
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1. A method for making a molded fabric treatment, comprising:
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a) providing a non-woven fabric backing sheet which comprises, at least in part, heat-fusible fibers and a heat-activated binder; b) providing a fabric facing sheet and a heat- or pressure-activated adhesive layer; c) placing together and aligning the facing sheet and the backing sheet with the adhesive layer therebetween to form a lay-up having a periphery; d) bladder molding the lay-up against a tool to form the treatment such that the periphery of the lay-up is forced into a peripheral undercut in the tool to form the lay-up into a treatment having a central portion with a substantially continuous undercut affixing portion about the periphery of the treatment; and e) removing the treatment from the tool. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for making a molded fabric treatment, comprising:
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a) providing a non-woven backing sheet which comprises, at least in part, heat-fusible fibers and a heat-activated binder; b) providing a fabric facing sheet; c) providing a heat- or pressure-activated adhesive layer; d) placing together and aligning the facing sheet and the backing sheet with the adhesive layer therebetween to form a lay-up having a periphery, wherein the adhesive layer allows slippage between the facing sheet and backing sheet of the lay-up; e) bladder molding the lay-up against a tool to form the treatment such that the periphery of the lay-up is forced into a peripheral undercut in the tool to form the lay-up into a treatment having a central portion with a substantially continuous undercut affixing portion about the periphery of the treatment; and f) removing the treatment from the tool. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method for making a molded fabric treatment, comprising:
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a) providing a non-woven fabric backing sheet which comprises, at least in part, heat-fusible fibers and a heat-activated binder; b) providing a fabric facing sheet and a heat- or pressure-activated adhesive layer; c) placing together and aligning the facing sheet and the backing sheet with the adhesive layer therebetween to form a lay-up having a periphery; d) providing slippage between the facing sheet and backing sheet of the lay-up; e) bladder molding the lay-up against a tool to form the treatment such that the periphery of the lay-up is forced into a peripheral undercut in the tool to form the lay-up into a treatment having a central portion with a substantially continuous undercut affixing portion about the periphery of the treatment, such that bladder molding the lay-up bonds together the backing sheet and the facing sheet, and such that the undercut affixing portion comprises an inwardly-angled flexible flange and an inwardly-turned lip; and f) removing the treatment form the tool. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification