| 摘要 |
PROBLEM TO BE SOLVED: To provide a rigid porous molded product with continuous pores, such as a porous film or, specifically porous hollow yarn, by drawing a melt-molding fluorine resin. SOLUTION: The rigid porous molded product with continuous pores is provided by drawing the melt-molding fluorine resin, such as an ETFE, a PFA, a FEP, a PCTFE, and an ECTFE. In this molded product, specifically when it is an original fabric comprising a hollow yarn, solid-core yarn, or strand comprising a recrystallized ethylene-tetrafluoroethylene-based copolymer which is extended of 50% and which has a characteristic of an elastic recovery of≥30%, the rigid porous molded product comprising a hollow yarn, solid yarn, or strand having a pore ratio of≥15% is provided, by drawing, in the longitudinal direction, the hollow yarn, solid yarn, or strand and forming pores. COPYRIGHT: (C)2008,JPO&INPIT
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