Fuel tank having a multilayer structure
AssigneeTi Automotive Technology Center GmbH
InventorPierre Delbarre
Life of this patent
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Abstract
An automotive plastic fuel tank with a wall having a structural layer of HDPE and a hydrocarbon fuel barrier layer of an EVOH based material with a binder layer between them. The barrier layer prevents the passage of hydrocarbons through the wall to the atmosphere. The barrier layer is on an exterior face of the wall and preferably on the interior of the tank in direct contact with fuel therein. Preferably, the barrier includes a layer of polyamide (A) or a mixture of polyamide (A) and polyolefin (B).
Claims27
A fuel tank having a structure comprising, successively:
- a first layer of high density polyethylene (HDPE),
- a layer of binder, and
- an exposed barrier layer of an EVOH based material.
A fuel tank having a structure comprising, successively:
- a first layer of high density polyethylene (HDPE),
- a layer of binder, and
- an exposed barrier layer of an EVOH based material and a layer of one of polyamide (A) and a mixture of polyamide (A) and polyolefin (B).
A fuel tank, comprising:
- a tank wall defining an interior of the fuel tank, said tank wall having an inner layer of a polyamide and polyolefin mixture adjacent to the interior of the fuel tank, a barrier layer generally surrounding the inner layer, and at least one structural layer surrounding the barrier layer.
Dependencies are inferred from the claim text.