公开(公告)号：JPH0631147A

公开(公告)日：1994-02-08

申请号：JP20726792

申请日：1992-07-10

Applicant: NOK CORP

Inventor： SAITO MASAHARU

IPC: B01D67/00 ,  B01D71/68

Abstract: PURPOSE:To obtain the ultrafilter membrane made of plate-like or hollow fiber ultrafilter membrane which has membrane strength durable for practical use and high flow rate while maintaining fractional property. CONSTITUTION:The film-forming stock soln. dissolving -SO3Na type sulfonated polysulfone is extended on a substrate, immersed into an aq. coagulating bath containing inorg. acid and inorg. sodium salt, gelatificated and a plate-like ultrafilter membrane is obtained, and the spinning stock soln. dissolving -SO3Na type sulfonated polysulfone is extruded with the aq. core liq. containing inorg. acid and inorg. sodium salt from a double annular nozzle, immersed into a water coagulating bath or the same aq. coagulating bath as the core liq., gelatificated and the hollow fiber ultrafilter membrane is obtained.

公开(公告)号：JP2004006100A

公开(公告)日：2004-01-08

申请号：JP2002159602

申请日：2002-05-31

Applicant: NOK CORP

Inventor： HAYASHI TAKAHIRO ,  SAITO MASAHARU

IPC: B01D63/02 ,  B01D69/08 ,  H01M8/04 ,  H01M8/10

Abstract: PROBLEM TO BE SOLVED: To provide a humidifier for a fuel cell whereby the enhancement of performance, particularly the reduction of the breaking and cutting of a hollow fiber film, is attained. SOLUTION: A film 14 is provided between an introduction hole 11a formed in a case 11 and an opposite face facing the introduction hole 11a in a hollow fiber film bundle 12 as a buffering member to buffer the shock of gas flowing in from the introduction hole 11a. Thereby, the gas flowing in from the introduction hole 11a is sent into the hollow fiber film bundle 12 after the shock is buffered by the film 14, and therefore the shock received by a hollow fiber film 12a can be suppressed. COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2002257388A

公开(公告)日：2002-09-11

申请号：JP2001055536

申请日：2001-02-28

Applicant: NOK CORP

Inventor： SAITO MASAHARU ,  NAKAYAMA TOSHIHIRO

IPC: F24F6/04 ,  F24F6/00 ,  H01M8/04 ,  H01M8/10

Abstract: PROBLEM TO BE SOLVED: To provide a steam permeation film excellent in durability, and to provide its using method. SOLUTION: The steam permeation film 10 forms a composite film consisting of a porous support 11 the internal part of which is hollow; and a film 12 coated on the inner peripheral surface of the hollow internal part of the porous support 11.

公开(公告)号：JP2001046843A

公开(公告)日：2001-02-20

申请号：JP22189199

申请日：1999-08-05

Applicant: NOK CORP

Inventor： SAITO MASAHARU

IPC: B01D63/02 ,  B01D63/00 ,  B01D71/34 ,  B01F1/00

Abstract: PROBLEM TO BE SOLVED: To enhance chemical resistance of a membrane module and apply the module to an ozone water making apparatus by containing a porous polyfluorovinylidene hollow fiber membrane made by a dry/wet spinning method, or the like, in a case made by potting it with a fluoroplastic having a boiling point lower than that of the polyfluorovinylidene. SOLUTION: A bundle of porous polyfluorovinylidene hollow fiber membranes made by a dry spinning method or a wet spinning method is subjected to potting with a fluoroplastic having a boiling point lower than that of the polyfluorovinylidene, and is contained in a case made of a fluoroplastic so as to constitute a membrane module. At the time of manufacture, static electricity is generated at both end parts of the bundle of the porous polyfluorovinylidene hollow fiber membranes so as to adhere a powder of the low boiling point fluoroplastic and then heating for melting is performed so as to form a potting part comprising a low melting point fluoroplastic and this is contained in the case made of the fluoroplastic. By this method, chemical resistance, particularly ozone resistance is enhanced.

公开(公告)号：JPH06327951A

公开(公告)日：1994-11-29

申请号：JP14546993

申请日：1993-05-26

Applicant: NOK CORP

Inventor： SAITO MASAHARU

IPC: B01D69/08 ,  B01D71/34 ,  B01D71/68

Abstract: PURPOSE:To provide a treating method of a porous hollow fiber membrane formed by dry and wet spinning method or wet spinning method and free from the generation of crushing or increased in crushing pressure at the time of drying by improving pressure resistance. CONSTITUTION:The porous hollow fiber membrane formed by the dry and wet spinning method or wet spinning method is heated in an autoclave. The autoclave treatment is applied for the porous hollow fiber membrane in wet state or drying state corresponding to a membrane material of the porous hollow fiber membrane.

公开(公告)号：JPH05305222A

公开(公告)日：1993-11-19

申请号：JP13636592

申请日：1992-04-28

Applicant: NOK CORP

Inventor： SAITO MASAHARU

IPC: B01D71/68

Abstract: PURPOSE:To enhance the transmission capacity of a polysulfone microporous hollow yarn membrane by reducing the diameter and thickness of the hollow yarn membrane while holding the strength thereof at the time of the production of the hollow yarn membrane by a dry and wet type spinning method. CONSTITUTION:A polysulfone membrane forming raw solution containing a thickener is held at a temp. generating phase separation and subsequently set to a temp. forming a uniform phase to be subjected to dry and wet type spinning to produce a polysulfone microporous hollow yarn membrane.