| 摘要 |
PROBLEM TO BE SOLVED: To provide a multilayer tube which has a low flexibility, chemical resistance and tackiness of tube inner surface comparing to a conventional multilayer tube while, as a whole, having a better resistance against an internal pressure at pumping a liquid and supplying an air. SOLUTION: The multilayer tube has a hardness of HDA 40 or higher and HDA 70 or less measured according to JIS K 7215. The tube comprises a tube base material 3 which is constituted of a fluororubber thermoplastic elastomer consisting of a rubber phase and a crystalline phase, and a coating layer 2 laminated on the inner surface of the tube base material 3.The multilayer tube 1 is provided by blending the fluororubber thermoplastic elastomer with a terpolymer of vinylidene fluoride/hexafluoropropylene/tetrafluoroethylene which has a hardness of HDA 70 or higher and HDD 80 or less measured according to JIS K 7215. COPYRIGHT: (C)2004,JPO
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