Patent ID: 8470423
Filing Date: 2013-06-25
Classification: B29C,B29K,B29L,B32B,F16L,Y10T

Abstract:
1. A plastics pipe having (a) an outer layer and (b) a stabilised inner layer and (c) a metallic barrier layer disposed between the inner and outer layer, wherein the metallic barrier layer is selected from the group consisting of a sputtered metal layer, a galvanically-coated metal layer, an electro-deposited metal layer, a wound metal sheet and a corrugated metal sheet, and wherein the stabilised inner layer comprises: an extruded thermoplastic polymer, wherein the thermoplastic polymer is (i) a polar functional polyolefin polymer, or (ii) a polyolefin polymer, or (iii) a combination of a polar functional polyolefin polymer and a polyolefin polymer, and wherein the thermoplastic polymer is selected from the group consisting of: polyethylene, cross-linked polyethylene and polypropylene; at least one polar stabilizer; and at least one particulate filler provided with pendant polar functional groups, comprising platelets and having an aspect ratio of from 10 to 150.