Patent ID: 7618714
Filing Date: 2009-11-17
Classification: B32B,Y10T

Abstract:
1. A composite product encompassing at least one polyacetal molding and at least one polyolefin molding, which have been bonded at least one of their surfaces using an adhesion-promoting layer which is substantially composed of a copolymer or of a mixture of these which derives from at least one alpha-olefin, from at least one ethylenically unsaturated carboxylic ester and, optionally from at least one other ethylenically unsaturated carboxylic acid derivative, where the molar ratio of alpha-olefin to ethylenically unsaturated carboxylic ester and, optionally other ethylenically unsaturated carboxylic acid derivative is selected so as to obtain the composite with a bond strength (measured by the tensile test at 23° C.) of at least 0.2 N/mm 2 and wherein the composite has five layers and has the following layer sequence: polyacetal, adhesion-promoting layer, polyolefin, adhesion-promoting layer, and polyacetal, or polyolefin, adhesion-promoting layer, polyacetal, adhesion-promoting layer, and polyolefin.