Patent ID: 6399189
Filing Date: 2002-06-04
Classification: B29C,B32B,Y10T

Abstract:
A thermoplastic resin foam comprising, a continuous thermoplastic resin foam layer, a number of highly-expanded, thermoplastic resin portions, wherein all of said thermoplastic resin portions are provided on a first surface or a second surface of said continuous foam layer, and slightly expanded, thermoplastic resin thin films covering outer surfaces of respective highly-expanded portions, and wherein said highly-expanded portions are thermally fused to each other through said slightly-expanded thin films;wherein the highly-expanded portions are directly heat fused to the first surface or the second surface of said continuous thermoplastic resin foam layer and the outer surface of the highly expanded portions are covered with the slightly expanded thin film in a region other than that heat-fused to the continuous thermoplastic resin foam layer.