Patent ID: 9534712
Date: 2017-01-03
CPC Classifications: B32B,F16L

Claim:
1. Multi-layered fuel feed pipe, wherein the feed pipe comprises at least five layers with the following layer structure from the inside to the outside: an innermost layer consisting of at least one polymer selected from the group of fluoropolymer, polyphenylene sulfide, and polybutylene naphthalate, a first support layer consisting of polyamide, a barrier layer, a second support layer consisting of polyamide, and an outer layer consisting of at least one polymer selected from the group of polyamide, polyphenylene sulfide, and polyphthalamide, wherein the layer thickness of the barrier layer is lower than the layer thickness of the second support layer, wherein the second support layer has a thickness of between 0.15 and 0.35 mm; wherein an inner adhesive layer has been arranged between the innermost layer and the first support layer and wherein the inner adhesive layer consists of a blend of the polymer of the first support layer and the polymer of the innermost layer.