Title:
BRAID JOINING METHOD FOR BRAID-REINFORCED HOLLOW FIBER MEMBRANE AND MANUFACTURING METHOD FOR BRAID-REINFORCED POROUS HOLLOW FIBER MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2018/151217
Kind Code:
A1
Abstract:
Provided is a joining method for a braid used in a braid-reinforced hollow fiber membrane in which braid ends are joined to each other by way of connecting two braids by inserting a core into the hollow portion of the ends of two braids to be joined, then covering the joined portion with a heat-shrink tube and heating and shrinking the heat-shrink tube at 120 to 160°C, wherein the braids can exhibit sufficient joint strength even when a load is applied during spinning or when the porous hollow fiber membrane is used as a treatment membrane such as for water purification treatment, wastewater treatment, or the like. Braid-reinforced porous hollow fiber membranes are manufactured by passing braids with the ends thereof joined by this method through the inside of an internal nozzle of a ring-shaped double spinning nozzle, coating and impregnating the external surface of the joined braid that has passed through the inside of the internal nozzle of the ring-shaped double spinning nozzle with a membrane-forming solution discharged from the external nozzle of the ring-shaped double spinning nozzle, coagulating in a coagulation liquid, and winding onto a bobbin.
Inventors:
WATANABE KENSUKE (JP)
Application Number:
PCT/JP2018/005277
Publication Date:
August 23, 2018
Filing Date:
February 15, 2018
Export Citation:
Assignee:
NOK CORP (JP)
International Classes:
B01D69/10; B01D69/08
Foreign References:
| JP2015205258A | 2015-11-19 | |||
| JP2008105014A | 2008-05-08 | |||
| JP2011036568A | 2011-02-24 | |||
| JPH1176772A | 1999-03-23 | |||
| JP2011031122A | 2011-02-17 | |||
| JP2005329405A | 2005-12-02 | |||
| JPS5281076A | 1977-07-07 | |||
| US5472607A | 1995-12-05 | |||
| JP2008168224A | 2008-07-24 | |||
| JPH057746A | 1993-01-19 | |||
| JP2012179603A | 2012-09-20 | |||
| JP2016010792A | 2016-01-21 | |||
| JP2936092B2 | 1999-08-23 | |||
| JP3849114B2 | 2006-11-22 | |||
| JP4942588B2 | 2012-05-30 | |||
| JP5430405B2 | 2014-02-26 |
Other References:
See also references of EP 3584001A4
Attorney, Agent or Firm:
YOSHIDA Toshio et al. (JP)
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