Fuel hose
AssigneeTokai Rubber Industries, Ltd.
InventorsShinji Iio, Hiroaki Ito, Takahiro Nishiyama
Life of this patent
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Abstract
A fuel hose comprises a single layered or multi-layered tubular rubber body and a thin film resin layer formed on the inner circumferential surface of the innermost layer of the tubular rubber body. The resin layer is formed of a resin such that an amount of permeation of 10% ethanol-mixed gasoline is 2 mg/cm2/day (at 60° C.) or less when the thickness of the resin layer is 0.1 mm. A preferred example of such a resin is EVOH with an ethylene content of from 35 to 50 mol % or polybutylene aromatic ester. The fuel hose has necessary flexibility and shows excellent impermeability even to an alcohol-mixed gasoline.
Claims19
A fuel hose comprising a single layered or multi-layered tubular rubber body and a thin film resin layer formed on the inner circumferential surface of an innermost layer of the tubular rubber body, wherein the resin layer is formed of a resin such that an amount of permeation of 10% ethanol-mixed gasoline is 2 mg/cm2/day (at 60° C.) or less when the thickness of the resin layer is 0.1 mm.
A fuel hose comprising a single layered or multi-layered tubular rubber body and a thin film resin layer formed on the inner circumferential surface of an innermost layer of the tubular rubber body, wherein the resin layer is formed of EVOH with an ethylene content of from 30 to 50 mol %.
A fuel hose comprising a single layered or multi-layered tubular rubber body and a thin film resin layer formed on the inner circumferential surface of an innermost layer of the tubular rubber body, wherein the resin layer is formed of a polybutylene aromatic ester.
Dependencies are inferred from the claim text.