Patent ID: 8202577
Filing Date: 2012-06-19
Classification: A63B,D06N,Y10T

Abstract:
1. A method for producing an artificial leather sheet, comprising: (i) coating a solution comprising an elastic polymer (B) on a substrate layer for forming a composite layer on a surface of the substrate layer, wherein the substrate layer comprises ultra fine fibers and an elastic polymer (A), the fineness of the ultra fine fibers is 0.0001 to 0.05 dtex, the composite layer comprises ultra fine fiber naps and an elastic polymer (B), the ultra fine naps are connected to the fibers constituting the substrate layer, and the elastic polymer (B) is joined to the ultra fine fibers; (ii) pressing the surface of the sheet with an emboss roll for forming hills; and (iii) then coating the top portions of the hills with a solution comprising an elastic polymer (C), wherein the solution of the elastic polymer (C) comprises two solutions of elastic polymers, (C1) and (C2), and the top portions of the hills are coated with the solution of an elastic polymer (C1), dried, and then coated with the solution of an elastic polymer (C2) containing a tackifier.