Title:
PRODUCTION OF HOLLOW FIBER TYPE SEPARATION MEMBRANE
Document Type and Number:
Japanese Patent JPH0739731
Kind Code:
A
Abstract:
PURPOSE: To provide a method for stably producing a hollow fiber type separa tion membrane wherein request performance such as excellent water permeabil ity, solute permeability and roundness is sufficiently satisfied in a wet and dry type spinning method for using gas as the hollow formation material.
CONSTITUTION: Spinning raw liquid is discharged downward from a mouth-piece 1 and simultaneously gas is supplied from the central part of the mouthpiece 1 to form a hollow part. Thereafter the hollow part is introduced into a coagulating bath. In the wet and dry type spinning method, the advanding direction of a hollow fiber 5 is changed by a plurality of guides in the coagulating bath.
Inventors:
SHIODA YASUHIRO
SAKURAI HIDEHIKO
WATANUKI SEIJI
SAKURAI HIDEHIKO
WATANUKI SEIJI
Application Number:
JP18633693A
Publication Date:
February 10, 1995
Filing Date:
July 28, 1993
Export Citation:
Assignee:
TOYO BOSEKI
International Classes:
B01D69/08; D01D5/24; D01D11/04; D01F1/08; D01F2/28; D01F6/00; (IPC1-7): B01D69/08; D01D5/24; D01D11/04; D01F1/08; D01F2/28; D01F6/00
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