| 摘要 |
PROBLEM TO BE SOLVED: To provide a production method and a production apparatus of hollow fiber membranes free from yarn rupture, yarn surface scratching, and surface abnormality due to melt fusion and excellent in stability by preventing melt fusion attributed to mutual contact of yarns in a dry part in production of a plurality of hollow fiber membranes by dry and wet type spinning. SOLUTION: In the method for producing a plurality of hollow fiber membranes by dry and wet type spinning, an in-liquid direction changing guide is installed in a solidification bath and a plurality of the hollow fiber membranes are fibrillated to respective yarns and moved between the liquid surface of the solidification bath and the above-mentioned in-liquid direction changing guide. COPYRIGHT: (C)2006,JPO&NCIPI
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