METHOD FOR PRODUCING HOLLOW FIBER MEMBRANE OF POLYMETHACRYLIC ACID ESTER AND BLOOD TREATING INSTRUMENT USING MEMBRANE

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a hollow fiber membrane when it is not accompanied by a gelling phenomenon at the time of cooling. SOLUTION: When a hollow fiber membrane is produced by means of a dry-wet type membrane production method using gaseous infusion, the pressure difference between the dry section and the out-of-system section is made to fall within a range from 9.8 Pa to 9.8 kPa, with the dry section being pressurized. COPYRIGHT: (C)2005,JPO&NCIPI