| 摘要 |
<p>PURPOSE:To prevent the generation of a pin hole and cracks by forming a layer composed of a resin composite whose polymerization ratio of an ethylene- vinyl alcohol copolymer, the ethylene content of which is a specified mol%, to thermoplastic polyurethane is within a specified range. CONSTITUTION:A hose for a cooling medium gas such as fluorocarbon gas or the like is obtained using one layer of a resin composite whose the polymerization ratio A/B of an ethylene-vinyl alcohol copolymer layer, for example, an ethylene-vinyl acetate copolymer saponification material (A), the ethylene content of which is 20-60mol%, to thermoplastic polyurethane (B) is 95/5-30/70. Accordingly, the gas barrier efficiency for a cooling medium, especially for 'Fleon-22(R)' gas is excellent. Furthermore, the deterioration of barrier efficiency in a portion susceptible to vibration can be prevented.</p> |
