MULTI-LAYER TUBE FOR CONDUCTING FUEL IN A MOTOR VEHICLE

摘要

A motor vehicle fuel conveying multi-layer co-extruded tube (1) comprising at least an innermost first layer (2) of a polyamide resin (P9T) consisting of a dicarboxylic acid component and a diamine component, wherein 60÷100% of the dicarboxylic acid component is terephthalic acid and 60÷100% of the diamine component is selected from 1,9-nonanediamine and 2-methyl-1,8-octanediamine; an intermediate second layer (3) of polyamide 6 (PA 6); an intermediate co-polyamide (CoPA)-based tie layer (4); and an external fourth layer of polyamide 12 (PA12).