| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a desired flexibility, decomposition resistivity and allowable impermeable membrane by incorporating a first layer of a substance containing a thermoplastic urethane for giving elasticity to a laminated membrane and a second layer of a substance containing a first type of a copolymer such as an ethylene or the like and providing impermeability selective for the membrane laminated from a gas fluid in the second layer. SOLUTION: The laminated membrane 10 comprises a first outer layer 12, a second outer layer 14 and an intermediate layer 16. The layers 12, 16 are formed of a substance made of a thermoplastic polyurethane. Mainly, the first and second layers can have a mean thickness of a range from 0.01 mm or below to a limit designated by a process an intended application of a final product formed by utilizing the membrane 10. The layer 16 is formed of a barrier substance selected from the group consisting of a copolymer of an ethylene and a vinyl alcohol, a copolymer of an acrylonitrile and methyl acrylate, a thermoplastic material and their mixtures.</p> |
