JPH04187224A - Production of fluorine-based porous hollow yarn membrane - Google Patents

Production of fluorine-based porous hollow yarn membrane

Info

Publication number
JPH04187224A
JPH04187224A JP31276890A JP31276890A JPH04187224A JP H04187224 A JPH04187224 A JP H04187224A JP 31276890 A JP31276890 A JP 31276890A JP 31276890 A JP31276890 A JP 31276890A JP H04187224 A JPH04187224 A JP H04187224A
Authority
JP
Japan
Prior art keywords
yarn
stretching
hollow yarn
melt
ethylene
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP31276890A
Inventor
Takayuki Hirai
Yasuhiro Kamine
Jun Kamo
Nobuyuki Kikuya
Original Assignee
Mitsubishi Rayon Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Priority to JP31276890A priority Critical patent/JPH04187224A/en
Publication of JPH04187224A publication Critical patent/JPH04187224A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To obtain a porous hollow yarn high in mechanical strength and having a thick film by melt-spinning an ethylene-chlorotrifluoroethylene copolymer and stretching the obtained yarn to make it porous.
CONSTITUTION: An ethylene-chlorotrifluoroethylene copolymer is melt-spun with a hollow yarn producing nozzle to obtain an unstretched crystalline hollow yarn which is highly oriented. The spinning temp. has to be controlled to 240-280°C, and the yarn fiber is wound at 100-4000 yarn forming draft. Since the crystallinity of the unstretched hollow yarn obtained is not sufficiently yet, it is heat-treated (annealed) at 180-240°C preferably in an inert gas atmosphere. The crystal structure is then not relaxed but broken and cold-stretching at <70°C by 10-100%. The cold-stretched yarn hot-stretching at 70-160°C. The total stretching rate is controlled in this case to 30-400% after hot stretching.
COPYRIGHT: (C)1992,JPO&Japio
JP31276890A 1990-11-20 1990-11-20 Production of fluorine-based porous hollow yarn membrane Pending JPH04187224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31276890A JPH04187224A (en) 1990-11-20 1990-11-20 Production of fluorine-based porous hollow yarn membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31276890A JPH04187224A (en) 1990-11-20 1990-11-20 Production of fluorine-based porous hollow yarn membrane

Publications (1)

Publication Number Publication Date
JPH04187224A true JPH04187224A (en) 1992-07-03

Family

ID=18033187

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31276890A Pending JPH04187224A (en) 1990-11-20 1990-11-20 Production of fluorine-based porous hollow yarn membrane

Country Status (1)

Country Link
JP (1) JPH04187224A (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2820056A1 (en) * 2001-01-31 2002-08-02 Toshiba Kk filter apparatus, ASSOCIATED METHOD against-washing, filtering and power plant
EP1474222A4 (en) * 2002-02-12 2005-02-16 Us Filter Wastewater Group Inc Halar membranes
JP2008504122A (en) * 2004-07-02 2008-02-14 シーメンス・ウォーター・テクノロジーズ・コーポレーション Gas transport membrane
US8840783B2 (en) 2007-05-29 2014-09-23 Evoqua Water Technologies Llc Water treatment membrane cleaning with pulsed airlift pump
US8858796B2 (en) 2005-08-22 2014-10-14 Evoqua Water Technologies Llc Assembly for water filtration using a tube manifold to minimise backwash
US8956464B2 (en) 2009-06-11 2015-02-17 Evoqua Water Technologies Llc Method of cleaning membranes
US9023206B2 (en) 2008-07-24 2015-05-05 Evoqua Water Technologies Llc Frame system for membrane filtration modules
US9022224B2 (en) 2010-09-24 2015-05-05 Evoqua Water Technologies Llc Fluid control manifold for membrane filtration system
US9533261B2 (en) 2012-06-28 2017-01-03 Evoqua Water Technologies Llc Potting method
US9604166B2 (en) 2011-09-30 2017-03-28 Evoqua Water Technologies Llc Manifold arrangement
US9675938B2 (en) 2005-04-29 2017-06-13 Evoqua Water Technologies Llc Chemical clean for membrane filter
US9764289B2 (en) 2012-09-26 2017-09-19 Evoqua Water Technologies Llc Membrane securement device
US9764288B2 (en) 2007-04-04 2017-09-19 Evoqua Water Technologies Llc Membrane module protection
US9815027B2 (en) 2012-09-27 2017-11-14 Evoqua Water Technologies Llc Gas scouring apparatus for immersed membranes
US9868834B2 (en) 2012-09-14 2018-01-16 Evoqua Water Technologies Llc Polymer blend for membranes
US9914097B2 (en) 2010-04-30 2018-03-13 Evoqua Water Technologies Llc Fluid flow distribution device
US9925499B2 (en) 2011-09-30 2018-03-27 Evoqua Water Technologies Llc Isolation valve with seal for end cap of a filtration system
US9962865B2 (en) 2012-09-26 2018-05-08 Evoqua Water Technologies Llc Membrane potting methods
US10322375B2 (en) 2015-07-14 2019-06-18 Evoqua Water Technologies Llc Aeration device for filtration system
US10427102B2 (en) 2013-10-02 2019-10-01 Evoqua Water Technologies Llc Method and device for repairing a membrane filtration module

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7754074B2 (en) 2001-01-31 2010-07-13 Kabushiki Kaisha Toshiba Filtering apparatus, back wash method therefor, filtering device and power plant
US7309424B2 (en) 2001-01-31 2007-12-18 Kabushiki Kaisha Toshiba Filtering apparatus, back wash method therefor, filtering device and power plant
FR2820056A1 (en) * 2001-01-31 2002-08-02 Toshiba Kk filter apparatus, ASSOCIATED METHOD against-washing, filtering and power plant
EP1474222A4 (en) * 2002-02-12 2005-02-16 Us Filter Wastewater Group Inc Halar membranes
JP2005516764A (en) * 2002-02-12 2005-06-09 ユー・エス・フィルター・ウェイストウォーター・グループ・インコーポレイテッドU.S. Filter Wastewater Group, Inc. Heira film
JP4656839B2 (en) * 2002-02-12 2011-03-23 シーメンス・ウォーター・テクノロジーズ・コーポレイションSiemens Water Technologies Corp. Halar film
JP2008504122A (en) * 2004-07-02 2008-02-14 シーメンス・ウォーター・テクノロジーズ・コーポレーション Gas transport membrane
US9675938B2 (en) 2005-04-29 2017-06-13 Evoqua Water Technologies Llc Chemical clean for membrane filter
US8858796B2 (en) 2005-08-22 2014-10-14 Evoqua Water Technologies Llc Assembly for water filtration using a tube manifold to minimise backwash
US8894858B1 (en) 2005-08-22 2014-11-25 Evoqua Water Technologies Llc Method and assembly for water filtration using a tube manifold to minimize backwash
US9764288B2 (en) 2007-04-04 2017-09-19 Evoqua Water Technologies Llc Membrane module protection
US8840783B2 (en) 2007-05-29 2014-09-23 Evoqua Water Technologies Llc Water treatment membrane cleaning with pulsed airlift pump
US9206057B2 (en) 2007-05-29 2015-12-08 Evoqua Water Technologies Llc Membrane cleaning with pulsed airlift pump
US9573824B2 (en) 2007-05-29 2017-02-21 Evoqua Water Technologies Llc Membrane cleaning with pulsed airlift pump
US9023206B2 (en) 2008-07-24 2015-05-05 Evoqua Water Technologies Llc Frame system for membrane filtration modules
US8956464B2 (en) 2009-06-11 2015-02-17 Evoqua Water Technologies Llc Method of cleaning membranes
US10441920B2 (en) 2010-04-30 2019-10-15 Evoqua Water Technologies Llc Fluid flow distribution device
US9914097B2 (en) 2010-04-30 2018-03-13 Evoqua Water Technologies Llc Fluid flow distribution device
US9022224B2 (en) 2010-09-24 2015-05-05 Evoqua Water Technologies Llc Fluid control manifold for membrane filtration system
US9630147B2 (en) 2010-09-24 2017-04-25 Evoqua Water Technologies Llc Fluid control manifold for membrane filtration system
US10391432B2 (en) 2011-09-30 2019-08-27 Evoqua Water Technologies Llc Manifold arrangement
US9925499B2 (en) 2011-09-30 2018-03-27 Evoqua Water Technologies Llc Isolation valve with seal for end cap of a filtration system
US9604166B2 (en) 2011-09-30 2017-03-28 Evoqua Water Technologies Llc Manifold arrangement
US9533261B2 (en) 2012-06-28 2017-01-03 Evoqua Water Technologies Llc Potting method
US9868834B2 (en) 2012-09-14 2018-01-16 Evoqua Water Technologies Llc Polymer blend for membranes
US9962865B2 (en) 2012-09-26 2018-05-08 Evoqua Water Technologies Llc Membrane potting methods
US9764289B2 (en) 2012-09-26 2017-09-19 Evoqua Water Technologies Llc Membrane securement device
US9815027B2 (en) 2012-09-27 2017-11-14 Evoqua Water Technologies Llc Gas scouring apparatus for immersed membranes
US10427102B2 (en) 2013-10-02 2019-10-01 Evoqua Water Technologies Llc Method and device for repairing a membrane filtration module
US10322375B2 (en) 2015-07-14 2019-06-18 Evoqua Water Technologies Llc Aeration device for filtration system

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