| 摘要 |
PURPOSE:To improve non-permeability of a refrigerant by interposing a phenol system resin layer of specific thickness between laminatated layers, in the case of a hose in which a polyamide system resin layer in the innermost, rubber intermediate layer, fiber reinforced layer and an outer side rubber layer are successively laminated. CONSTITUTION:In the case of a hose for transporting a refrigerant, the innermost layer 1 of polyamide resin system resin of nylon 11, nylon 12, etc., rubber intermediate layer 2 of acrylonitrile-butadiene copolymer rubber (NBR), chlorosulfonated polyethylene rubber (CSM), etc., synthetic fiber-reinforced layer 4 of polyester, alamide, etc. and an outer side rubber layer 3 of ethylene- propylene-diene ternary copolymer rubber (DPDM), chloroprene rubber (CR), etc. are laminated, and a phenol system resin layer 5 of 5 to 100mum thickness is provided between the innermost layer 1 and the rubber intermediate layer 2. As a result, while flexibility is ensured, sufficient non-permeability for the refrigerant such as in a frozen state is displayed. |
