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Patent Searching and Data


Title:
WINDING METHOD FOR HOLLOW FIBER MEMBRANE AND HOLLOW FIBER MEMBRANE
Document Type and Number:
Japanese Patent JP2004313881
Kind Code:
A
Abstract:

To simply provide a hollow fiber membrane with less closure and flatness of the membrane having circularity in the hollow fiber membrane obtained by being wound on a tubular bobbin and particularly having high permeation performance (being further made porous and having high voids).

In the winding method of the hollow fiber membrane having water-permeability (UFR) of 37°C pure water of 100 mL/(m2×hr×mmHg) or more and rupture strength of 60 g or less or yield strength of 40 g or less, contact pressure against a cheese is 1.0 g to 2.5 g per 1 mm of cheese width, tension at the winding is 4.0 g or more per one hollow fiber membrane and the hollow fiber membrane is wound to a cheese shape with tension not exceeding the yield strength.


Inventors:
MORITA JUNSUKE
OGAWA HIROFUMI
Application Number:
JP2003109213A
Publication Date:
November 11, 2004
Filing Date:
April 14, 2003
Export Citation:
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Assignee:
TOYO BOSEKI
International Classes:
B01D69/08; D01D5/24; (IPC1-7): B01D69/08