Patent ID: 6908668
Filing Date: 2005-06-21
Classification: B32B,C08J,Y10T

Abstract:
1. A foamed polyolefin resin sheet comprising a foamed polyolefin resin layer and a non-foamed surface layer said non-foamed surface layer formed of a thermoplastic resin composition having an A1/A2 ratio falling within a range between 1×10 −8 and 1×10 −1 , wherein A1 is a maximum absorbance of the infrared absorption spectrum of the thermoplastic resin composition within an infrared ray wave number region of from 1700 to 1750 cm −1 and A2 is a maximum absorbance of the infrared absorption spectrum of the thermoplastic resin composition within an infrared ray wave number region of from 1455 to 1465 cm −1 , said resin sheet further comprising a non-foamed layer formed of a long-chain branched polyolefin resin between the foamed layer and the non-foamed surface layer.