A porous hollow fiber manufacture device and a manufacturing method

Japanese Patent JP6108291

B2

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.

Takeshi Yoshida

JP2013519674A

April 05, 2017

March 26, 2013

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Mitsubishi Rayon Co., Ltd.

B01D69/08; D01D5/24; D02J1/22

JP2001200423A
JP62045715A
JP9268430A
JP2002088577A
JP2004218189A
JP2010163724A
JP2005232669A
JP2001003238A

US4501710

Koichi Tsujii
Sadao Kumakura
Disciple Maru Ken
Ino Sato
Mitsuru Matsushita
Ichiro Kurasawa
Ryohei Yoshino

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