MANUFACTURING DEVICE AND MANUFACTURING METHOD FOR POROUS HOLLOW FIBER MEMBRANE

WIPO Patent Application WO/2013/146795

A1

Provided are a porous hollow fiber membrane-manufacturing device and method that are capable of producing homogeneous hollow fiber membranes by preventing slippage between the hollow fiber and the drawing rollers during drawing of the hollow fiber. A device for manufacturing porous hollow fiber membranes, which is provided with a heat-processing unit (10) that heat-processes the hollow fiber and a cold-drawing unit (20) that cold-draws the heat-processed hollow fiber, wherein the cold-drawing unit (20) is provided with cold-drawing rollers comprising multiple feed rollers (21) and multiple take-up rollers (22), which are disposed on the downstream side of the multiple feed rollers (21) in the conveyance direction of the hollow fiber. The frictional coefficient of the outer circumferential surface of the feed roller (21c) disposed most downstream of the multiple feed rollers in the conveyance direction of the hollow fiber is higher than the frictional coefficient of the outer circumferential surfaces of the other feed rollers (21b) and is higher than the frictional coefficient of the outer circumferential surfaces of the take-up rollers (22b) other than the take-up roller (22c), which is disposed most upstream of the multiple take-up rollers in the conveyance direction of the hollow fiber.

YOSHIDA TAKESHI (JP)

PCT/JP2013/058822

October 03, 2013

March 26, 2013

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MITSUBISHI RAYON CO (JP)

B01D69/08; D01D5/24; D02J1/22

JP2001200423A	2001-07-27
JPS6245715A	1987-02-27
JPH09268430A	1997-10-14
JP2002088577A	2002-03-27
JP2004218189A	2004-08-05
JP2010163724A	2010-07-29
JP2005232669A	2005-09-02

TSUJII Koichi et al. (JP)
辻居 Koichi (JP)

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