Process for producing artificial leather

Details Process for producing artificial leather Process for producing artificial leather

1976-07-15

1978-07-25

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156231, 156246, 156324, 428151, 428160, 428425, 428904, B29D 2704, B32B 520, B32B 3114

Patent

active

041027191

ABSTRACT:
A process for producing an artificial leather having excellent touch, appearance and full-hand similar to that of natural leather and having further excellent softness and surface strength, which comprises coating a composition comprising an urethane prepolymer, a combination of catalysts and a foam stabilizer and including a plurality of extremely fine cells (foams) of an inert gas, onto a release paper or a layer of a surface treating agent coated on a release paper in a specified thickness; subjecting the resultant to a steam treatment under a specified atmosphere; laminating a base sheet onto the coating layer under pressure; subjecting the laminated product to a heat treatment at a specified temperature, and then peeling off the release paper, and optionally further treating the product with a surface treating agent.

REFERENCES:
patent: 3708333 (1973-01-01), Carlson
patent: 3793102 (1974-02-01), Day
patent: 3861937 (1975-01-01), Hanneken et al.
patent: 3933548 (1976-01-01), Anderson et al.
patent: 3939021 (1976-02-01), Nishibayashi
patent: 3959049 (1976-05-01), Tanaka et al.

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