SEPARATION MEMBRANE AND METHOD FOR PRODUCING SAME

Title:

SEPARATION MEMBRANE AND METHOD FOR PRODUCING SAME

Document Type and Number:

WIPO Patent Application WO/2011/118486

Kind Code:

A1

Abstract:

Disclosed is a separation membrane—comprising an elongated substrate having fluid permeability and a separation layer formed at the surface of said substrate—wherein the aforementioned separation layer comprises a predetermined thickness section having a predetermined thickness and thin sections each positioned on the outside of both edges in the widthwise direction of said predetermined thickness portion and having a thinner thickness than the aforementioned predetermined thickness, and there is a separation-layer-lacking section, at which only the aforementioned substrate is present and the aforementioned separation layer is absent, between the outside edges in the widthwise direction of each of said thin sections and the outer edges in the widthwise direction of the aforementioned substrate. The separation membrane can be produced by using coating bar having a protrusion on both the left and right ends of the surface that contacts a macromolecule solution for forming the separation layer.

Inventors:

ICHIKAWA TATSUYA (JP)
HATANO SADAJIRO (JP)

Application Number:

PCT/JP2011/056341

Publication Date:

September 29, 2011

Filing Date:

March 17, 2011

Export Citation:

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Assignee:

TORAY INDUSTRIES (JP)
ICHIKAWA TATSUYA (JP)
HATANO SADAJIRO (JP)

International Classes:

B01D69/10; B01D61/02; B01D61/14; B01D63/10; B01D69/00; B01D69/12; B01D71/16; B01D71/34; B01D71/56; B01D71/68; D06M15/256; D06M15/333; D06M15/59; D06M15/63

Domestic Patent References:

WO2006068100A1

2006-06-29

Foreign References:

JP2008119680A	2008-05-29
JP2000042384A	2000-02-15
JP2007289937A	2007-11-08
JP2007289935A	2007-11-08
JP2007283287A	2007-11-01
JP2003245530A	2003-09-02
JPH0931390A	1997-02-04
JPH09313905A	1997-12-09

Other References: