Patent ID: 7631903
Filing Date: 2009-12-15
Classification: B29C,B29K,B29L,B60K,F16L,Y10S,Y10T

Abstract:
1. A part for connecting a fluid line to an opening of a container comprised of thermoplastic material or for closing the opening of the container, the part comprising: a first component and a second component comprised of primarily thermoplastic material; wherein the first component has a surface to be connected to the container; wherein the material of the first component is configured to form with the thermoplastic material of the container a heat fusion joint via the surface by welding but has no sufficient diffusion barrier capability relative to hydrocarbon fuel; wherein the material of the second component, in comparison to the material of the first component, has a significantly higher diffusion barrier capability, a reduced swelling capability relative hydrocarbon fuel, a higher mechanical strength, even after hydrocarbon fuel exposure, and a higher thermal shape stability; wherein the material of the second component surrounds the first component at least up to an injection location positioned so as to face away from the surface as far as possible; wherein the material of the first component has been injected through the core of the material of the second component via the injection location to form the surface.