METHOD FOR PRODUCING POROUS HOLLOW FIBER MEMBRANE

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a porous hollow fiber membrane which has a few defects in a hollow fiber membrane product and a few drawn yarn end breakages and with which separation operation is smoothly carried out in drawing. SOLUTION: The method for producing the porous hollow fiber membrane comprises a process for carrying out operations two or more times in which an adhesive tape is attached to a traveling hollow fiber filament bundle and the traveling position of the hollow fiber filament is regulated so as not to travel the hollow fiber filaments in a lapped state when the drawing process of undrawn hollow fiber filaments of polyolefin starts. COPYRIGHT: (C)2004,JPO&NCIPI