Patent ID: 6062269
Filing Date: 2000-05-16
Classification: B60H,F16L,Y10S

Abstract:
A refrigerant conveying hose which comprisesan inner tube forming an inner side layer,an intermediate layer disposed on the outer periphery surface of the inner tube,a fiber reinforced layer disposed on the outer periphery surface of the intermediate layer, andan outer tube forming an outer covering layer;said inner tube being formed from a thermoplastic resin obtained by alloying a polyamide resin or a copolymer thereof and a urethane based elastomer with dynamic vulcanization, or another thermoplastic resin obtained by alloying a polyamide resin or a copolymer thereof and a urethane based elastomer with dynamic vulcanization;said intermediate layer being formed from a thermoplastic resin material comprising a dynamically vulcanized alloy of a polypropylene (PP) and an isobutylene-isoprene rubber (IIR); wherein said inner tube and said intermediate layer are bonded with a specific resin based adhesive;said outer tube being formed from a thermoplastic resin material comprising a dynamically vulcanized alloy of a polypropylene (PP) and an ethylene propylene diene monomer rubber (EPDM).