| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a hollow fiber membrane which has a high strength and a high water permeability, and can be manufactured on low environmental load and at a low cost by use of polyvinylidene fluoride resin, which has a high chemical resistance. SOLUTION: The manufacturing method of the hollow fiber membrane comprises the steps of producing a hollow fiber by solidifying a solution containing at least polyvinylidene fluoride resin, drawing the hollow fiber in the draw ratio of 1.1 to 4, and relaxing the drawn hollow fiber in the relaxation rate of 0.1 to 10%. COPYRIGHT: (C)2003,JPO
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