DEVICE FOR PRODUCING HOLLOW POROUS FILM AND METHOD FOR PRODUCING HOLLOW POROUS FILM

摘要

The present invention relates to a device for producing a hollow porous film, the device comprising a spinning nozzle that discharges/shapes a film-forming resin solution dissolved to at least a hydrophobic polymer to a favorable solvent, a processing vessel that houses a processing gas containing a nonsolvent of the hydrophobic polymer and includes a first opening through which the film-forming resin solution discharged/shaped from the spinning nozzle is introduced, and a second opening from which the film-forming resin solution having come into contact with the gas containing the nonsolvent of the hydrophobic polymer is led, a solidification tank which houses a solidification solution and into which the film-forming resin solution led from the second opening is introduced; and gas elimination means for eliminating the processing gas, which flows out of the first opening, from the vicinity of the spinning nozzle.

主权项

1. A device for producing a hollow porous film, the device comprising:
a spinning nozzle that discharges/shapes a film-forming resin solution containing at least a hydrophobic polymer and a favorable solvent; a processing vessel that houses a gas containing a nonsolvent of the hydrophobic polymer and includes a first opening through which the film-forming resin solution discharged/shaped from the spinning nozzle is introduced, and a second opening from which the film-forming resin solution having come into contact with the gas containing the nonsolvent of the hydrophobic polymer is led; a solidification tank which houses a solidification solution and into which the film-forming resin solution led from the second opening is introduced; and gas elimination means for eliminating the gas, which flows out of the first opening and contains the nonsolvent of the hydrophobic polymer, from the vicinity of the spinning nozzle.