作者: Erwin Brunnhofer
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摘要: A layered tubing for use in a motor vehicle has five layers, namely thick tubular outer layer formed of Nylon 11 or 12, intermediate 6, thin bonding between and bonded to the layers polyethylene polypropylene, solvent-blocking inside copolymer ethylene vinylalcohol, an inner 6 blocking layer. The each have thickness 0.2 mm 0.7 mm. comprises by weight 30% 45% 0.1 at most 0.5 active side chains maleic acid anhydride 0.05