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US 6,604,551 B2Granted
Fuel hose
AssigneeAsahi Glass Company, Limited
InventorsEiichi Nishi, Masako Nagashima
Life of this patent
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Abstract
A fuel hose wherein an electrically conductive fluororesin is used as an inner layer, and the inside surface thereof is smooth even when it is molded at a high speed, is provided. As the inner layer, a highly melt flowable fluororesin having an electrical conductivity and a melt flow rate of from 14 to 30 (g/10 min), is used to form a fuel hose wherein the inside surface of the inner layer is substantially smooth.
Claims24
A fuel hose having a laminated structure, comprising:
- an inner layer (A) comprising a fluororesin;
- and
- an outer layer (B) comprising a thermoplastic resin other than a fluororesin;
- wherein said inner layer (A) has an electrical conductivity and a melt flowability such that a melt flow rate is from 14 to 30 (g/10 min);
- and
- wherein at least an inside surface of said inner layer is substantially smooth;
- wherein a surface roughness Rmax of said inside surface of the inner layer is at most 100 μm.
4 more elements
A fuel hose having a laminated structure, comprising:
- an inner layer (A) comprising a fluororesin;
- and
- an outer layer (B) comprising a thermoplastic resin other than a fluororesin;
- wherein said inner layer (A) has an electrical conductivity and a melt flowability such that a melt flow rate is from 14 to 30 (g/10 min);
- and
- wherein at least an inside surface of said inner layer is substantially smooth;
- wherein said fluororesin of the inner layer is an ethylene/tetrafluoroethylene copolymer which is a copolymer of 60-30 molar percent of ethylene, 20-60 molar percent of tetrafluoroethylene, and 0-40 molar percent of other copolymerizable monomer;
- wherein the other copolymerizable monomer is present;
- and
- wherein said other copolymerizable monomer is selected from the group consisting of an α-olefin, a fluoroolefin, a vinyl ether and a (meth)acrylate.
7 more elements
Dependencies are inferred from the claim text.