Method of making sheet material

Details Method of making sheet material Method of making sheet material

1974-10-29

1977-06-07

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

428 85, 428 91, 428315, 428320, B32B 3120

Patent

active

040281612

ABSTRACT:
A sheet material having leather-like grain, excellent scuffing and abrasion resistance and superior dyeability comprising in combination, a substrate, and intermediate layer of 0.05 to 2.5 mm thickness consisting of a finely napped porous polymer bonded to said substrate and an upper layer consisting of a polymeric coating of thickness ranging from 1-100 microns. In typical embodiments, the upper layer may be a polymeric coating material such as linear or cross-linked polyurethanes, the intermediate layer may be a porous polyester, polyamide, vinyl or elastomeric polymer, e.g. a polyurethane, and the substrate may be a woven or non-woven fabric. In preparation of this sheet material, the intermediate layer is pressed and condensed to about 10 to 90% to a density of from about 0.20 to 0.50 g/cc.

REFERENCES:
patent: 3067483 (1962-12-01), Hollowell
patent: 3264805 (1966-07-01), Aoki
patent: 3284274 (1966-11-01), Hulslander et al.
patent: 3565670 (1971-02-01), Shinohara et al.
patent: 3764363 (1973-10-01), Civardi et al.

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