Patent ID: 6682795
Filing Date: 2004-01-27
Classification: B29C,B29K,B29L,F16L,Y10T

Abstract:
A hollow body for fuel tank or fuel tank accessory for a motor vehicle, said fuel tank comprising:at least two melded multilayer parts welded together to form a multilayer hollow body having a hollow portion formed by a multilayer wall, each of said multilayer parts comprising at least one thermoplastic non-barrier layer and at least one barrier layer, said barrier layer comprising a material different than the material of the non-barrier layer; and consisting essentially of at least one liquid-crystal polymer, said barrier layer forming an inner layer being selected from the group consisting of (a) a layer in direct contact with any fluid lying inside the hollow body and (b) an internal layer of the multilayer wall where the internal layer is only in contact with other layers of the multilayer wall to the exclusion of any atmospheric fluid or contents in the hollow body.