Fuel hose
AssigneeTokai Rubber Industries, Ltd.
InventorsHiroaki Ito, Hirokazu Kitamura
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Abstract
A fuel hose which satisfies low-permeability requirements in conformity with stringent regulations against vapor emission of fuel gases, is halogen-free and has excellent hydrolysis resistance, inter-layer adhesiveness and low-temperature flexibility. The fuel hose comprises: an innermost layer (1) comprising a thermoplastic polyester elastomer and having a flexural modulus in a predetermined range; an intermediate layer (2) comprising a polyester resin and provided around the innermost layer (1); and an outermost layer (3) comprising a thermoplastic polybutylene terephthalate elastomer and provided around the intermediate layer (2).
Claims3
A fuel hose comprising:
- an innermost layer comprising a thermoplastic polyester elastomer having a flexural modulus of 400 MPa to 2000 MPa;
- an intermediate layer comprising a polyester resin and provided around the innermost layer;
- and an outermost layer comprising a thermoplastic polybutylene terephthalate elastomer and provided around the intermediate layer.
Dependencies are inferred from the claim text.