| 摘要 |
<p>The purpose of the present invention is to provide a production device and a production method with which condensation in a spinning nozzle can be inhibited, and a hollow porous membrane having a uniform membrane structure can be produced. Accordingly, a hollow-porous-membrane production device (1), which solidifies a membrane-forming resin solution to produce a hollow porous membrane, is provided with: a spinning nozzle (3) provided with a discharge port through which the membrane-forming resin solution is downwardly discharged in a filament shape; a solidification tank (7) which has, accommodated therein, a solidification liquid (5) for solidifying the membrane-forming resin solution, and which is disposed such that a liquid surface of the solidification liquid (5) is below the discharge port of the spinning nozzle (3) and separated therefrom by a prescribed distance; and a scavenging means (9) which covers a surface of the membrane-forming resin solution traveling between the discharge port and the liquid surface of the solidification liquid (5) in the solidification tank (7), and which distributes a scavenging gas around a periphery of the membrane-forming resin solution. The scavenging gas has a relative humidity which is less than 50% of that of a non-solvent component of the membrane-forming resin solution.</p> |
