| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for producing a porous hollow fiber membrane, by which a film production stock solution ejected from a spinning nozzle is prevented from attaching onto the outside of a reinforcement support in a lump shape and a porous hollow fiber membrane of high quality can be produced with excellent process stability when the porous hollow fiber membrane in which a porous membrane layer is formed outside the hollow reinforcement support. <P>SOLUTION: The method for producing the porous hollow fiber membrane has a spinning coagulation process for imparting the film production stock solution outside the reinforcement support and then coagulating the film production stock solution by coagulation liquid. When spinning starts, a set value Wa of supply amount of the film production stock solution supplied to stock solution channels 15, 16 from the spinning nozzle 1 is made larger than a set value Wb in a stationary state and then supply amount of the film production stock solution is used as the set value Wb. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
