| abstract |
【Task】 Provided is a method for producing a dry-type hollow fiber membrane having a spinning speed of 30 m / min or more, no dry crushing due to online drying, and excellent biocompatibility. [Solution] In a manufacturing method in which a hollow fiber membrane for medical use is formed and then dried online, the membrane forming stock solution is composed of a polysulfone polymer and a hydrophilic polymer, and the ratio of the hydrophilic polymer weight to the total polymer weight is 15 wt% or more. The above problem is solved by a method for producing a hollow fiber membrane, which is 25 wt% or less and the polysulfone polymer is 18 wt% or more. |