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Title:
HOLLOW FIBER
Document Type and Number:
Japanese Patent JPS56148907
Kind Code:
A
Abstract:

PURPOSE: A hollow fiber of a high molecular compound in which wall-thick parts that project outward from its wall surface continuously extend in the fiber-axis direction, thus being suitably used for hemodialysis, because it has high permeation selectivity, high strength and reduced adhesion to other fibers.

CONSTITUTION: A high-molecular compound such as cellulose acetate is dissolved in a solvent mixture such as of formamide and acetone to prepare a spinning dope. The spinning dope is dry-wet spun using a specific nozzle 3 that is composed of the inner nozzle for introducing the core solution 4 and a ring slit 5 with projections 6 for forming wall thick parts 2 on the outer surface and using, e.g., formamide as a core solution. The resultant fibers are hydrolyzed with an alkali to produce the objective hollow fiber 1 with riblike projections 2 extending along the fiber axis IV continuously on the fiber surface.


Inventors:
JIYOU YASUSHI
NIINA AKIHIKO
KANEKO NORIAKI
ICHIGE NORIYUKI
NAGASE TOSHIO
ICHIKAWA KOUJI
SAITOU TETSUO
SONOBE HISAKO
Application Number:
JP5017480A
Publication Date:
November 18, 1981
Filing Date:
April 15, 1980
Export Citation:
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Assignee:
NIPPON ZEON CO
International Classes:
D01D5/24; B01D69/08; B01D69/14; D01F2/00; (IPC1-7): D01D5/24; D01F1/00
Domestic Patent References:
JPS55128009A1980-10-03



 
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