Patent ID: 8383218
Filing Date: 2013-02-26
Classification: B32B,Y10T

Abstract:
1. Multi-layer composite in form of an extruded hollow section, comprising a thermoplastic outer layer and at least one further layer, wherein: the outer layer is formed by a mixture based on (A) 80 to 20 parts by weight of polyamide 12 and (B) 20 to 80 parts by weight of polyamide elastomer (TPE-A), wherein the polyamide elastomer (TPE-A) is polyamide 6 polyether amide, with polyamide 6 hard blocks and polyether inserted as flexible soft blocks, wherein the polyether has a backbone consisting of polypropylene glycol (PPG) with amino terminal groups; the mixture further comprises an impact modifier acting as a compatibilizer in an amount of 12 to 25 wt.-% based on the weight of the total molding material; and wherein the hollow section has been produced at extrusion speeds of over 20 m/min, so that the produced hollow section has an elongation at break of over 200% wherein the elongation at break is measured at the finished hollow section according to DIN EN ISO 527-2.