Fuel tank attachment and method for producing a fuel tank attachment
AssigneeReinhard Feichtinger
InventorsReinhard Feichtinger, Simon Amesöder
Life of this patent
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Abstract
Fuel tank attachment, composed of a blend of a first plastic and a second plastic, wherein the first and second plastics are not miscible, wherein the blend contains a compatibilizer to render the first and second plastics miscible, wherein the first plastic is a fuel-resistant plastic, and wherein the second plastic is a non-fuel-resistant plastic, wherein the fuel tank attachment relates to a neck fitting, in particular, to a filler neck or a valve, in particular, a tank venting valve, or a cap element, wherein the fuel tank attachment is molded from a blend as one piece.
Claims22
A fuel tank attachment, comprising:
- a neck, a tubular body element extending from the neck, and an annular flange element co-axially extending from the tubular body, integrally formed from a blend of a first plastic (A) and a second plastic (B), wherein:
- the first and second plastics are not miscible,
- the blend contains a compatibilizer to render the first and second plastics miscible,
- the first plastic is a fuel-resistant plastic,
- the second plastic is a non-fuel-resistant plastic, and
- the fuel tank attachment is molded as a non-layered, single piece from the blend.
A fuel tank attachment for a motor-vehicle fuel tank, comprising:
- a neck, a tubular body element extending from the neck, and an annular flange element co-axially extending from the tubular body and is integrally bonded to an outer wall of the fuel tank, wherein:
- the fuel tank attachment is integrally formed from a blend of a first plastic (A) and second plastic (B),
- the first and second plastics are immiscible,
- the blend contains a compatibilizer to render the first and second plastics miscible, the compatibilizer being a graft copolymer,
- the first plastic is a fuel-resistant plastic formed from a polyamide (PA) taken from the group consisting of PA6, PA66, PA11, PA12, and PA-T,
- the second plastic is a non-fuel-resistant plastic formed from polyethylene (PE),
- the blend contains approximately 45 wt. % of the first plastic, approximately 45 wt. % of the second plastic, and approximately 10 wt.% of the compatibilizer, additives, and fillers, and
- the fuel tank attachment is molded as a non-layered, single piece from the blend.
A method of producing a fuel tank attachment, comprising the following steps:
- producing a component from a blend of a first plastic with a second plastic where the first and second plastics are not miscible, wherein the blend contains a compatibilizer so as to render the first and second plastics miscible, wherein the first plastic is a fuel-resistant plastic and the second plastic is non-fuel-resistant, the component having a neck, a tubular body element extending from the neck, and an annular flange element co-axially extending from the tubular body, integrally formed from the first plastic and the second plastic;
- and
- integrally bonding the component with a wall of a fuel tank such that the fuel tank attachment is molded as a non-layered, single piece from the blend.
Dependencies are inferred from the claim text.