ES2075123T3 - Procedimiento para producir una membrana multicapa porosa de politetrafluoroetileno. - Google Patents

Procedimiento para producir una membrana multicapa porosa de politetrafluoroetileno.

Info

Publication number
ES2075123T3
ES2075123T3 ES90123478T ES90123478T ES2075123T3 ES 2075123 T3 ES2075123 T3 ES 2075123T3 ES 90123478 T ES90123478 T ES 90123478T ES 90123478 T ES90123478 T ES 90123478T ES 2075123 T3 ES2075123 T3 ES 2075123T3
Authority
ES
Spain
Prior art keywords
polyetetrafluoroethylene
procedure
producing
multilayer membrane
porous multilayer
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.)
Expired - Lifetime
Application number
ES90123478T
Other languages
English (en)
Inventor
Shinji Tamaru
Katsutoshi Yamamoto
Osamu Tanaka
Hirofumi Nishibayashi
Osamu Inoue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries 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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Application granted granted Critical
Publication of ES2075123T3 publication Critical patent/ES2075123T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/005—Shaping by stretching, e.g. drawing through a die; Apparatus therefor characterised by the choice of materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B01D69/1212—Coextruded layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/30—Polyalkenyl halides
    • B01D71/32—Polyalkenyl halides containing fluorine atoms
    • B01D71/36—Polytetrafluoroethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/023—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/18—PTFE, i.e. polytetrafluoroethylene, e.g. ePTFE, i.e. expanded polytetrafluoroethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Laminated Bodies (AREA)
  • Molding Of Porous Articles (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

SE EXPONE UN PROCESO PARA LA PRODUCCION DE UNA MEMBRANA POROSA DE POLITETRAFLUOROETILENO QUE CONSTA DE POR LO MENOS DOS CAPAS (4, 5, 6) CON DIAMETROS DE POROS DISTINTOS, EL PROCESO COMPRENDE LAS SIGUIENTES FASES: SE RELLENA EL INTERIOR DE UN CILINDRO (12) DE UN MOLDE DE EXTRUSION CON POR LO MENOS DOS TIPOS DE POLVOS FINOS DE POLITETRAFLUOROETILENO CON CADA UNO DE LOS CUALES SE HA MEZCLADO UN LIQUIDO LUBRICANTE, A CONTINUACION SE EXTRUYE EN FORMA DE PASTA LOS POLVOS PARA OBTENER UN PRODUCTO EXTRUIDO MULTICAPAS (15) QUE SE ENROLLA OPCIONALMENTE; Y DESPUES SE ESTIRA EL PRODUCTO EXTRUIDO O EL PRODUCTO ENROLLADO EXTRUIDO POR LO MENOS MONOAXIALMENTE UNA VEZ QUE EL LIQUIDO LUBRICANTE ES SACADO DE ELLO O SIN SACARLO.
ES90123478T 1989-12-07 1990-12-06 Procedimiento para producir una membrana multicapa porosa de politetrafluoroetileno. Expired - Lifetime ES2075123T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1320273A JPH078926B2 (ja) 1989-12-07 1989-12-07 ポリテトラフルオロエチレン複層多孔膜の製造方法

Publications (1)

Publication Number Publication Date
ES2075123T3 true ES2075123T3 (es) 1995-10-01

Family

ID=18119663

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90123478T Expired - Lifetime ES2075123T3 (es) 1989-12-07 1990-12-06 Procedimiento para producir una membrana multicapa porosa de politetrafluoroetileno.

Country Status (12)

Country Link
US (1) US5064593A (es)
EP (1) EP0433787B1 (es)
JP (1) JPH078926B2 (es)
KR (1) KR0150640B1 (es)
CN (1) CN1030690C (es)
AU (1) AU623068B2 (es)
BR (1) BR9006236A (es)
CA (1) CA2031827C (es)
DE (1) DE69019694T2 (es)
ES (1) ES2075123T3 (es)
PL (1) PL165872B1 (es)
RU (1) RU2045328C1 (es)

Families Citing this family (91)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5225131A (en) * 1989-12-07 1993-07-06 Daikin Industries, Ltd. Process for producing multilayer polytetrafluoroethylene porous membrane and semisintered polytetrafluoroethylene multilayer structure
JP3116410B2 (ja) * 1991-04-11 2000-12-11 住友電気工業株式会社 着色ポリテトラフルオロエチレン多孔質体の製造方法
US5217666A (en) * 1991-05-29 1993-06-08 Daikin Industries Ltd. Process for producing porous polytetrafluoroethylene film
ES2038556B1 (es) * 1991-12-23 1994-02-16 Univ Cantabria Proceso de tratamiento biologico de aguas residuales basado en una biopelicula desarrollada sobre un soporte permeable a gases.
WO1993018214A1 (en) * 1992-03-13 1993-09-16 Atrium Medical Corporation Controlled porosity expanded polytetrafluoroethylene products and fabrication
EP0613921B1 (en) * 1992-07-30 1999-11-17 Daikin Industries, Limited Porous polytetrafluoroethylene material and process for producing the same
US5453235A (en) * 1993-01-29 1995-09-26 Impra, Inc. Method of forming dual porosity FTFE tubes by extrusion of concentric preforms
DE4308368C2 (de) * 1993-03-16 1997-05-22 Gore & Ass Poröses Polytetrafluorethylen (PTFE) sowie ein Verfahren zu seiner Herstellung
US5399307A (en) * 1993-06-18 1995-03-21 Dalton; Robert E. Methods of compression molding two or more polytetrafluoroethylene resin layers
AT399507B (de) * 1993-07-30 1995-05-26 Chemiefaser Lenzing Ag Bikomponentenformkörper aus polytetrafluorethylen (ptfe) und verfahren zu seiner herstellung
US5393929A (en) * 1993-11-23 1995-02-28 Junkosha Co. Ltd. Electrical insulation and articles thereof
JP3003500B2 (ja) * 1994-04-28 2000-01-31 ダイキン工業株式会社 ポリテトラフルオロエチレン複合多孔膜
CA2193804A1 (en) * 1994-06-30 1996-01-11 Shinji Tamaru Bulky long fiber and split yarn of polytetrafluoroethylene, method of manufacturing the same, cotton-like material manufacturing method using the fiber and yarn, and dust collecting filter cloth
ATE202971T1 (de) * 1994-09-23 2001-07-15 Impra Inc Kohlenstoffhaltiges gefässtransplantat und herstellungsverfahren
DE19544912A1 (de) 1995-12-01 1997-06-05 Gore W L & Ass Gmbh PTFE-Körper aus mikroporösem Polytetrafluorethylen mit Füllstoff und Verfahren zu dessen Herstellung
US5800512A (en) * 1996-01-22 1998-09-01 Meadox Medicals, Inc. PTFE vascular graft
US6428571B1 (en) * 1996-01-22 2002-08-06 Scimed Life Systems, Inc. Self-sealing PTFE vascular graft and manufacturing methods
TW438679B (en) * 1996-08-09 2001-06-07 Daikin Ind Ltd Filter medium and air filter unit using the same
DE19638416C1 (de) * 1996-09-19 1997-11-13 Gore W L & Ass Gmbh Formkörper aus einem Blend eines Fluorpolymeren und eines Thermoplasten und Verfahren zu dessen Herstellung
MD1858C2 (ro) * 1996-11-07 2002-10-31 Бучер-Гуйер Аг Modul de membrană pentru separatoare cu membrană, domeniu de utilizare şi procedeu de fabricare
US6010529A (en) * 1996-12-03 2000-01-04 Atrium Medical Corporation Expandable shielded vessel support
US5925074A (en) * 1996-12-03 1999-07-20 Atrium Medical Corporation Vascular endoprosthesis and method
JP2000079332A (ja) * 1998-07-08 2000-03-21 Nitto Denko Corp エアフィルタ用ろ材
US6517571B1 (en) 1999-01-22 2003-02-11 Gore Enterprise Holdings, Inc. Vascular graft with improved flow surfaces
US6342294B1 (en) 1999-08-12 2002-01-29 Bruce G. Ruefer Composite PTFE article and method of manufacture
US6454744B1 (en) * 1999-12-23 2002-09-24 Tfx Medical, Inc. Peelable PTFE sheaths and methods for manufacture of same
US6616876B1 (en) * 2000-10-03 2003-09-09 Atrium Medical Corporation Method for treating expandable polymer materials
US6923927B2 (en) * 2000-10-03 2005-08-02 Atrium Medical Corporation Method for forming expandable polymers having drugs or agents included therewith
DE10061936A1 (de) * 2000-12-13 2002-07-04 Valentin Kramer Gegenstand aus ePTFE und Verfahren zum Herstellen desselben
ITMI20011613A1 (it) * 2001-07-26 2003-01-26 Ausimont Spa Processo di coagulazione di polveri fini di ptfe
CN100422741C (zh) * 2003-03-27 2008-10-01 泰尔茂株式会社 试纸和多孔膜
WO2005118254A1 (en) * 2004-06-03 2005-12-15 Coltec Industrial Products Llc Multifuncton multilayer ptfe tape and method of manufacture
US8029563B2 (en) 2004-11-29 2011-10-04 Gore Enterprise Holdings, Inc. Implantable devices with reduced needle puncture site leakage
EP2263784B1 (en) * 2004-12-22 2012-03-28 Entegris, Inc. Multilayer porous membrane and process of manufacture
AU2006278421A1 (en) * 2005-08-03 2007-02-15 Donaldson Company, Inc. Microporous membrane for flash distillation
CA2620076A1 (en) * 2005-08-25 2007-03-01 Tonen Chemical Corporation Multi-layer, microporous polyethylene membrane, battery separator formed thereby and battery
CN101820986B (zh) * 2007-08-24 2013-06-19 佛兰芒技术研究所 填充聚合物膜、用途及制造方法
JP5220369B2 (ja) 2007-09-04 2013-06-26 富士フイルム株式会社 結晶性ポリマー微孔性膜及びその製造方法、並びに濾過用フィルタ
US9650479B2 (en) 2007-10-04 2017-05-16 W. L. Gore & Associates, Inc. Dense articles formed from tetrafluoroethylene core shell copolymers and methods of making the same
US9040646B2 (en) 2007-10-04 2015-05-26 W. L. Gore & Associates, Inc. Expandable TFE copolymers, methods of making, and porous, expanded articles thereof
US8637144B2 (en) * 2007-10-04 2014-01-28 W. L. Gore & Associates, Inc. Expandable TFE copolymers, method of making, and porous, expended articles thereof
JP2009197147A (ja) * 2008-02-22 2009-09-03 Kurabe Ind Co Ltd 微細層構造を有するｐｔｆｅ多孔体及びその製造方法
JP5658860B2 (ja) * 2008-05-12 2015-01-28 日東電工株式会社 ポリテトラフルオロエチレン多孔質膜およびその製造方法ならびに濾材
US8075675B2 (en) * 2008-06-12 2011-12-13 Serveron Corporation Apparatus and method for extracting gas from liquid
US20100086767A1 (en) * 2008-10-06 2010-04-08 General Electric Company Processes For Producing Multilayer Polytetrafluoroethylene Articles And Articles Formed Therefrom
JP4944864B2 (ja) * 2008-11-04 2012-06-06 日東電工株式会社 ポリテトラフルオロエチレン多孔質膜およびその製造方法ならびに防水通気フィルタ
CN102049886A (zh) * 2009-10-28 2011-05-11 上海金由氟材料有限公司 密封用聚四氟乙烯薄材
US8673440B2 (en) * 2009-10-30 2014-03-18 Bha Altair, Llc Porous membrane
UA97530C2 (ru) * 2010-01-12 2012-02-27 Александр Анатолиевич Осадчий Полимерная диффузионная мембрана "форспласт-софт"
JP5470140B2 (ja) 2010-03-31 2014-04-16 富士フイルム株式会社 結晶性ポリマー微孔性膜及び濾過用フィルター
US9944044B2 (en) 2010-05-06 2018-04-17 W. L. Gore & Associates, Inc. Contamination resistant air permeable fabric laminate and garments made therefrom
JP2012011369A (ja) 2010-06-01 2012-01-19 Fujifilm Corp 結晶性ポリマー微孔性膜及びその製造方法、並びに濾過用フィルタ
CN102274694B (zh) * 2010-06-08 2013-08-07 吕晓龙 一种聚四氟乙烯分离膜制备方法
WO2012086725A1 (ja) * 2010-12-21 2012-06-28 ダイキン工業株式会社 延伸材料
JP2012176361A (ja) * 2011-02-25 2012-09-13 Sumitomo Electric Fine Polymer Inc 多孔質複層フィルター
JP2012206113A (ja) * 2011-03-16 2012-10-25 Fujifilm Corp 結晶性ポリマー微孔性膜及びその製造方法、並びに濾過用フィルタ
WO2013005431A1 (ja) * 2011-07-05 2013-01-10 日東電工株式会社 ポリテトラフルオロエチレン多孔質膜の製造方法
EP2758155B1 (en) * 2011-09-23 2019-01-09 W. L. Gore & Associates, Inc. Surface-modified fluoropolymer membrane and method of its production
CN103987449B (zh) * 2011-12-05 2016-03-02 住友电工超效能高分子股份有限公司 聚四氟乙烯多孔膜、聚四氟乙烯多孔膜复合体、以及分离膜元件
CN102626990A (zh) * 2012-04-24 2012-08-08 江苏新氟隆塑胶有限公司 Ptfe盘根拉伸成型设备系统及生产工艺
US10808054B2 (en) * 2012-10-10 2020-10-20 Atrium Medical Corporation Self-bonding fluoropolymers and methods of producing the same
CN102961976B (zh) * 2012-12-14 2015-09-23 国家海洋局天津海水淡化与综合利用研究所 聚四氟乙烯中空纤维多孔膜及其制备方法
US9573339B2 (en) 2013-01-18 2017-02-21 W. L. Gore & Associates, Inc. Low gloss, air permeable, abrasion resistant, printable laminate containing an asymmetric membrane and articles made therefrom
CN103386256B (zh) * 2013-06-21 2015-03-25 浙江理工大学 微孔型聚四氟乙烯杂化平板膜包缠法制备中空纤维膜和管式膜的方法
KR101433774B1 (ko) * 2013-10-04 2014-08-27 한국생산기술연구원 3중층으로 구성된 먼지포집용 여과체
US9814560B2 (en) 2013-12-05 2017-11-14 W. L. Gore & Associates, Inc. Tapered implantable device and methods for making such devices
US9644054B2 (en) 2014-12-19 2017-05-09 W. L. Gore & Associates, Inc. Dense articles formed from tetrafluoroethylene core shell copolymers and methods of making the same
CN105983352B (zh) * 2015-02-16 2018-05-15 上海灵氟隆新材料科技有限公司 一种高通量厚型聚四氟乙烯膜及其制备方法
JP5833263B1 (ja) * 2015-02-24 2015-12-16 株式会社サンケイ技研 ポリテトラフルオロエチレン多孔質シートの製造方法
AU2016270380B2 (en) 2015-06-05 2019-04-04 W. L. Gore & Associates, Inc. A low bleed implantable prosthesis with a taper
FR3052718B1 (fr) * 2016-06-16 2019-08-09 Faurecia Automotive Industrie Procede de fabrication d'une piece d'equipement automobile et piece associee
CN106364120B (zh) * 2016-08-30 2018-09-14 上海索康医用材料有限公司 一种纯膨体聚四氟乙烯片材的制备方法
US10953574B2 (en) * 2016-12-09 2021-03-23 3M Innovative Properties Company Polymeric multilayer film
EP3925511A1 (en) * 2017-06-01 2021-12-22 Hoya Corporation Endoscope
JP2019192749A (ja) * 2018-04-24 2019-10-31 日本ゴア株式会社 電子部品用ポリテトラフルオロエチレン膜
KR102218062B1 (ko) * 2018-10-18 2021-02-19 주식회사 엘지화학 불소계 수지 다공성 막 및 이의 제조방법
JP6661098B1 (ja) * 2019-01-28 2020-03-11 有限会社ヤマカツラボ 積層ポリテトラフルオロエチレン多孔膜及びその製法
KR20230054448A (ko) * 2020-08-27 2023-04-24 더블유.엘. 고어 앤드 어소시에이트스, 인코포레이티드 상이한 표면 에너지를 갖는 복합 플루오로중합체 막
JP7553080B2 (ja) * 2020-09-02 2024-09-18 中興化成工業株式会社 多層チューブの製造方法
CN112044278A (zh) * 2020-09-14 2020-12-08 浙江格尔泰斯环保特材科技股份有限公司 一种具有多层结构的ptfe微孔膜的制备方法
WO2022113018A2 (en) 2020-11-27 2022-06-02 Uniwersytet Slaski Blood oxygenator with an organic membrane
US12685806B2 (en) 2020-11-27 2026-07-21 Uniwersytet Slaski Blood oxygenator with an organic membrane
US12364424B2 (en) 2021-03-11 2025-07-22 President And Fellows Of Harvard College Fluorinated elastomers for brain probes and other applications
WO2022192319A1 (en) 2021-03-11 2022-09-15 President And Fellows Of Harvard College Fluorinated elastomers for brain probes and other applications
CN113368695B (zh) * 2021-06-10 2023-01-20 盐城海普润科技股份有限公司 有机复合管式膜及其制备方法和应用
CN113844141B (zh) * 2021-09-23 2023-09-15 上海索康医用材料有限公司 一种膨体聚四氟乙烯外科隔离膜及其制作工艺
JP2023061322A (ja) * 2021-10-19 2023-05-01 株式会社オートネットワーク技術研究所 導体被覆材料、電線、及び導体被覆材料の製造方法
CN116059849B (zh) * 2021-11-01 2024-10-15 中国石油化工股份有限公司 聚四氟乙烯复合物及其多孔膜和制备方法及应用
CN114181481B (zh) * 2021-11-23 2023-05-16 山东东岳高分子材料有限公司 一种用于制备多层ptfe复合膨体板材料的筛选方法、应用、膨体板及其制备方法
CN117946484A (zh) * 2022-10-28 2024-04-30 中国石油化工股份有限公司 一种聚四氟乙烯基光热膜和制备方法及应用
CN116212665A (zh) * 2023-03-23 2023-06-06 山东大学 一种聚四氟乙烯微孔膜及其功能化制备工艺

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4096227A (en) * 1973-07-03 1978-06-20 W. L. Gore & Associates, Inc. Process for producing filled porous PTFE products
US4082893A (en) * 1975-12-24 1978-04-04 Sumitomo Electric Industries, Ltd. Porous polytetrafluoroethylene tubings and process of producing them
US4208745A (en) * 1976-01-21 1980-06-24 Sumitomo Electric Industries, Ltd. Vascular prostheses composed of polytetrafluoroethylene and process for their production
JPS603842B2 (ja) * 1976-09-03 1985-01-31 住友電気工業株式会社 非対称孔径薄膜材料とその製造方法
US4385093A (en) * 1980-11-06 1983-05-24 W. L. Gore & Associates, Inc. Multi-component, highly porous, high strength PTFE article and method for manufacturing same
US4596837A (en) * 1982-02-22 1986-06-24 Daikin Industries Ltd. Semisintered polytetrafluoroethylene article and production thereof
US4478898A (en) * 1982-06-04 1984-10-23 Junkosha Co., Ltd. Laminated porous polytetrafluoroethylene tube and its process of manufacture
JPS6116840A (ja) * 1984-07-04 1986-01-24 Nippon Valqua Ind Ltd ポリテトラフルオロエチレン製多孔質膜の製造方法
US4816339A (en) * 1987-04-28 1989-03-28 Baxter International Inc. Multi-layered poly(tetrafluoroethylene)/elastomer materials useful for in vivo implantation
US4961891A (en) * 1988-10-04 1990-10-09 Garlock, Inc. Method of making high compressibility gasket material
US4882113A (en) * 1989-01-26 1989-11-21 Baxter International Inc. Heterogeneous elastomeric compositions containing a fluoroelastomer and PTFE and methods for manufacturing said compositions
RU2124391C1 (ru) * 1989-12-07 1999-01-10 Дайкин Индастриз, Лтд. Способ получения многослойной политетрафторэтиленовой пористой мембраны и полуспеченная политетрафторэтиленовая многослойная структура

Also Published As

Publication number Publication date
CA2031827A1 (en) 1991-06-08
BR9006236A (pt) 1991-09-24
KR0150640B1 (ko) 1998-10-01
KR910011458A (ko) 1991-08-07
AU623068B2 (en) 1992-04-30
CA2031827C (en) 2002-09-03
PL165872B1 (pl) 1995-02-28
EP0433787A1 (en) 1991-06-26
EP0433787B1 (en) 1995-05-24
RU2045328C1 (ru) 1995-10-10
JPH03179038A (ja) 1991-08-05
AU6784690A (en) 1991-06-13
PL288123A1 (en) 1991-08-12
US5064593A (en) 1991-11-12
JPH078926B2 (ja) 1995-02-01
DE69019694D1 (de) 1995-06-29
CN1052434A (zh) 1991-06-26
DE69019694T2 (de) 1995-09-21
CN1030690C (zh) 1996-01-17

Similar Documents

Publication Publication Date Title
ES2067637T3 (es) Procedimiento para producir una multicapa de membrana porosa de politetrafluoroetileno y estructura de multicapa de politetrafluoroetileno semisinterizada.
CA2031827A1 (en) Process for producing multilayer polytetrafluoroethylene porous membrane
ES552550A0 (es) Procedimiento y aparato para extruir cuantitativamente producto alimenticio.
ES2187753T3 (es) Procedimiento para la preparacion de d-treo-(r;r)-metilfenidato y para el reciclaje de enantiomeros no deseados mediante epimerizacion.
BR7404434D0 (pt) Processo aperfeicoado para a separacao de liquidos de uma mistura de substancias solidas e liquidas e dispositivo para a realizacao do processo
AT348743B (de) Vorrichtung zur innenkalibrierung von aus einer strangpresse austretenden hohlprofilen
CH557291A (de) Verfahren zur vermeidung von bildwicklungen bei der herstellung von zylindrischen, schrauben- und schichtfoermigen garnwicklungen.
CH505199A (de) Verfahren zur kontinuierlichen Herstellung von Seife und Vorrichtung zu dessen Durchführung
BE773061A (fr) Procede de diffusion a membrane liquide pour la separation de melanges aqueux
KR100295347B1 (ko) 다층배터리격리판및이의제조방법
BE833852A (fr) Nouveaux derives de 5h-debenz(b.f)azepine et procede pour leur preparation
BE812306A (fr) Procede pour la preparation de resorcinol et des derives alcoylo-substitues du resorcinol
AR201605A1 (es) Metodo para la produccion de polvos de acero de calidad de moldeo, con densidades aparentes elevadas
IT1005369B (it) Metodo ed apparecchiatura per la separazione di getti di fusione dal la sabbia delle forme di fusione
BE761247A (fr) Procede pour la separation de 2-chloro-1, 3-butadiene
CH500058A (de) Rüttelanlage zur Herstellung von Formkörpern, insbesondere von Kohleelektroden für die Aluminiumindustrie
BE823837A (fr) Procede et appareil pour la separation des chutes ou dechets dans la fabrication de corps creux en matiere synthetique thermoplastique par soufflage
ATA1034174A (de) Verfahren zur herstellung von neuen 5:6-benzo-delta-pyron-derivaten bzw. von pharmazeutisch annehmbaren salzen und von optischen isomeren hievon
AT370034B (de) Vorrichtung zum herstellen von rohrfoermigen hohlkoerpern, insbesondere von verpackungstuben
JPS5247579A (en) Continuous separation method of mixed liquid
BE798333A (fr) Procede pour la realisation de corps creux en matiere synthetique
FR2668467B1 (fr) Procede de separation hafnium/zirconium par extraction liquide/liquide avec pre-epuration du zirconium.
ATA343074A (de) Verfahren zur herstellung von phthalazino-(2,3-b)-phthalazin-5(14h), 12(7h)-dion
BE773644A (fr) Procede de fabrication d'emballages de formes differentes, deplies et rendus rigides au moment de leur mise en oeuvre
ATA902274A (de) Verfahren zur herstellung von neuen 6-aza-3h-1,4- benzodiazepinen, deren optischen isomeren und deren salzen

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 433787

Country of ref document: ES