Patent ID: 7169453
Filing Date: 2007-01-30
Classification: B32B,C08F,C08L,Y10T

Abstract:
1. A structure comprising, successively: a first layer of high density polyethylene (HDPE) a layer of binder, a second layer of an ethylene-vinyl alcohol copolymer or of a mixture based on an ethylene-vinyl alcohol copolymer, and a third layer of a mixture of a polyamide (A) and a polyolefin (B), wherein polyolefin (B) comprises: (i) a high density polyethylene, and either (ii) a mixture of a polyethylene (C1) and a polymer (C2) selected from the group consisting of elastomers, very low density polyethylenes and ethylene copolymers, the mixture (C1)+(C2) being co-grafted with an unsaturated carboxylic acid, or, a mixture of: (ii) a polymer (C2) selected from the group consisting of elastomers, very low density polyethylenes and ethylene copolymers, the polymer (C2) being grafted with an unsaturated carboxylic acid, and (iii) a polymer (C′2) selected from the group consisting of elastomers, very low density polyethylenes and ethylene copolymers.