Sandwich motor vehicle tank comprising a barrier film and injection-molded inner tank walls and outer tank walls

Abstract

A motor vehicle tank, having a first tank shell and a second tank shell, the first tank shell and the second tank shell defining between each other at least one section of a tank volume of the motor vehicle tank, the first tank shell and the second tank shell respectively having an edge area having a joining flange, the first tank shell and the second tank shell being integrally joined to each other at their joining flanges across a common joining surface, the first tank shell and the second tank shell respectively being a multicomponent tank shell, which includes a barrier film and at least on its edge area an inner wall section that is injection molded onto the inner side of the barrier film pointing toward the tank volume as well as an outer wall section injection molded onto the outer side of the barrier film pointing away from the tank volume, wherein the barrier film of each tank shell is formed in such a way that with the approach to the common joining surface in the area of the joining flange it runs away from the tank volume and toward the outer tank side, so that an integral joint of the tank shells is formed from a first joining area situated closer to the tank volume, in which the injection molded inner tank wall sections of the two tank shells are joined to each other, and a second joining area situated further removed from the tank volume, in which the barrier films of the two tank shells are joined to each other.

Dependencies are inferred from the claim text.