Refrigerant conveying hose
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
May 16, 2000
Grant Date -
N/A
app pub date -
Jun 19, 1998
filing date -
Feb 20, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A refrigerant conveying hose, being wholly made of a synthetic resin, is formed of an inner tube forming an inner side layer, an intermediate layer on the outer periphery surface of the inner tube, a fiber reinforced layer on the outer periphery surface of the intermediate layer and an outer tube forming the outer covering layer. The inner layer is formed of any one of (1) an thermoplastic resin alloyed of a polyamide resin and an olefin based elastomer, (2) an thermoplastic resin alloyed of a copolymer of a polyamide resin and an olefin based elastomer, (3) an thermoplastic resin alloyed of a polyamide resin and an urethane based elastomer and (4) an thermoplastic resin alloyed of a copolymer of a polyamide resin and an urethane based elastomer, the intermediate layer is formed of an thermoplastic resin material alloyed of a polypropylene (PP) and a isobutylene-isoprene rubber (IIR), an adhesive for bonding the inner tube and the intermediate layer is formed of a specific resin based adhesive, the outer tube is formed of an thermoplastic resin material alloyed of a polypropylene (PP) and an ethylene propylene diene monomer rubber (EPDM), and the resulting hose is molded out thereof.
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