METHOD OF PREPARATION OF ARTIFICIAL LEATHER HAVING SILVERTONE AND SUEDE-LIKE CHARACTER

摘要

firstly coating liquid substance of viscosity 2000-4000 cps composed of purified polyurethane resin for wet-process onto releasing substrate of resinous film sheet; coagulating by impregnating in a coagulation bath to form silver layer in a way that conc. of dimethylformamide within the bath be controlled within 5 %; secondarily coating liq. substance of the same formulation onto one side of silver layer to bond the base substrate; washing, drying and stripping releasing substrate; coating liq. substance of polyurethane resin for dry-process onto bonding substrate; drying, pressure-bonding the dried substrate with silver layer; obtained from above process, cooling and stripping the bonding substrate.