Title:
PRODUCTION OF HOLLOW FIBERS
Document Type and Number:
Japanese Patent JPS5285525
Kind Code:
A
Abstract:
PURPOSE: To produce round hollow fibers of uniform thickness, with improved selective permeability by extruding a solution of high polymer compound through an annular slit, and by extruding an aqueous solution of salt from inside the slit.
Inventors:
JIYOU YASUSHI
Application Number:
JP15631675A
Publication Date:
July 15, 1977
Filing Date:
December 29, 1975
Export Citation:
Assignee:
NIPPON ZEON CO
International Classes:
D01D5/04; B01D69/14; D01D5/24; D01F2/02; D01F2/28; D01F6/40; (IPC1-7): D01D5/24; D01F2/02; D01F2/28; D01F6/40
Domestic Patent References:
| JPS4964573A | 1974-06-22 | |||
| JPS49133614A | 1974-12-23 | |||
| JPS4840050A | 1973-06-12 | |||
| JPS4962726A | 1974-06-18 |