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WO2009038181A1 - 延伸多孔質ポリテトラフルオロエチレンフィルム積層シート及びこのシートから構成されるガスケット - Google Patents

延伸多孔質ポリテトラフルオロエチレンフィルム積層シート及びこのシートから構成されるガスケット Download PDF

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Publication number
WO2009038181A1
WO2009038181A1 PCT/JP2008/066995 JP2008066995W WO2009038181A1 WO 2009038181 A1 WO2009038181 A1 WO 2009038181A1 JP 2008066995 W JP2008066995 W JP 2008066995W WO 2009038181 A1 WO2009038181 A1 WO 2009038181A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
laminated sheet
stretched porous
film laminated
porous polytetrafluoroethylene
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.)
Ceased
Application number
PCT/JP2008/066995
Other languages
English (en)
French (fr)
Inventor
Hirokazu Hisano
Shinichi Urakami
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.)
Japan Gore Tex Inc
Original Assignee
Japan Gore Tex Inc
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 Japan Gore Tex Inc filed Critical Japan Gore Tex Inc
Priority to EP20080831362 priority Critical patent/EP2208615B1/en
Priority to US12/678,551 priority patent/US8784983B2/en
Priority to CA2700251A priority patent/CA2700251C/en
Publication of WO2009038181A1 publication Critical patent/WO2009038181A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/14—Layered products comprising a layer of synthetic resin next to a particulate layer
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
    • F16J15/3236—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips with at least one lip for each surface, e.g. U-cup packings
    • 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. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
    • B29L2031/265—Packings, Gaskets
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/02—Synthetic macromolecular particles
    • B32B2264/0214—Particles made of materials belonging to B32B27/00
    • B32B2264/0257—Polyolefin particles, e.g. polyethylene or polypropylene homopolymers or ethylene-propylene copolymers
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/518—Oriented bi-axially
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/72—Density
    • 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
    • B32B2581/00—Seals; Sealing equipment; Gaskets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249978—Voids specified as micro
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249978—Voids specified as micro
    • Y10T428/249979—Specified thickness of void-containing component [absolute or relative] or numerical cell dimension
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249981—Plural void-containing components
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249987—With nonvoid component of specified composition
    • Y10T428/249991—Synthetic resin or natural rubbers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249987—With nonvoid component of specified composition
    • Y10T428/249991—Synthetic resin or natural rubbers
    • Y10T428/249992—Linear or thermoplastic

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Gasket Seals (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

　本発明の積層シートは、延伸多孔質ポリテトラフルオロエチレンフィルムを熱圧着で積層一体化したシートであって、シートの比表面積が９．０ｍ2／ｇ以上、密度が０．４ｇ／ｃｍ3以上０．７５ｇ／ｃｍ3未満であるところに特徴を有する。これにより、延伸多孔質ＰＴＦＥフィルム積層シートの耐クリープ性とフィルム間の接着性を高めるができる。
PCT/JP2008/066995 2007-09-20 2008-09-19 延伸多孔質ポリテトラフルオロエチレンフィルム積層シート及びこのシートから構成されるガスケット Ceased WO2009038181A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20080831362 EP2208615B1 (en) 2007-09-20 2008-09-19 Stretched porous polytetrafluoroethylene film laminated sheet and gasket composed of the sheet
US12/678,551 US8784983B2 (en) 2007-09-20 2008-09-19 Expanded porous polytetrafluoroethylene film-laminated sheet, and gasket composed of said sheet
CA2700251A CA2700251C (en) 2007-09-20 2008-09-19 Expanded porous polytetrafluoroethylene film-laminated sheet, and gasket composed of said sheet

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-244334 2007-09-20
JP2007244334A JP5207694B2 (ja) 2007-09-20 2007-09-20 延伸多孔質ポリテトラフルオロエチレンフィルム積層ガスケットシート及びこのガスケットシートから構成されるガスケット

Publications (1)

Publication Number Publication Date
WO2009038181A1 true WO2009038181A1 (ja) 2009-03-26

Family

ID=40467990

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/066995 Ceased WO2009038181A1 (ja) 2007-09-20 2008-09-19 延伸多孔質ポリテトラフルオロエチレンフィルム積層シート及びこのシートから構成されるガスケット

Country Status (5)

Country Link
US (1) US8784983B2 (ja)
EP (1) EP2208615B1 (ja)
JP (1) JP5207694B2 (ja)
CA (1) CA2700251C (ja)
WO (1) WO2009038181A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013053195A (ja) * 2011-09-02 2013-03-21 Nitto Denko Corp 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
US8673440B2 (en) * 2009-10-30 2014-03-18 Bha Altair, Llc Porous membrane

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140196840A1 (en) * 2011-07-05 2014-07-17 Nitto Denko Corporation Method for producing porous polytetrafluoroethylene membrane
WO2013168203A1 (ja) 2012-05-08 2013-11-14 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防水通気部材
US20140231340A1 (en) * 2013-02-15 2014-08-21 Pall Corporation Composite including ptfe membrane
US20150115548A1 (en) * 2013-10-29 2015-04-30 Virginia Sealing Products, Inc. Composite gasket
US10688432B2 (en) 2015-05-07 2020-06-23 Nitto Denko Corporation Filter medium and filter unit
CN107530647B (zh) * 2015-05-07 2018-12-28 日东电工株式会社 过滤器滤材和过滤器单元
KR20210101305A (ko) * 2018-12-17 2021-08-18 도날드슨 컴파니, 인코포레이티드 다공성 ptfe 막
CN109501424B (zh) * 2018-12-26 2023-09-12 江苏金由新材料有限公司 一种ptfe复合密封垫片及其制备工艺
US12036729B2 (en) 2020-07-01 2024-07-16 W. L. Gore & Associates, Inc. Process for forming porous three dimensional expanded polytetrafluoroethylene articles
US20230243426A1 (en) * 2022-01-28 2023-08-03 VSP Tech., Inc. Composite gasket with non-metallic insert

Citations (3)

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Publication number Priority date Publication date Assignee Title
JPH0389133U (ja) * 1989-12-28 1991-09-11
JPH03221541A (ja) * 1990-01-29 1991-09-30 Daikin Ind Ltd ポリテトラフルオロエチレン多孔膜およびその製造方法
JPH10237203A (ja) * 1996-12-27 1998-09-08 Umei Taikako Kofun Yugenkoshi ポリテトラフルオロエチレン多孔質成形体

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US6080472A (en) * 1979-11-27 2000-06-27 Yeu Ming Tai Chemical Ind. Co., Ltd. Porous polytetrafluoroethylene molded article
US5094895A (en) * 1989-04-28 1992-03-10 Branca Phillip A Composite, porous diaphragm
JP2748585B2 (ja) 1989-08-31 1998-05-06 株式会社明電舎 ローラダイナモメータ
US5596450A (en) * 1995-01-06 1997-01-21 W. L. Gore & Associates, Inc. Light reflectant surface and method for making and using same
JP3221541B2 (ja) 1995-01-26 2001-10-22 日本電信電話株式会社 光導波路と光ファイバとの接続構造および接続方法
US5964465A (en) * 1996-03-13 1999-10-12 W. L. Gore & Associates, Inc. Low creep polytetrafluoroethylene form-in-place gasketing elements
JP3947603B2 (ja) 1997-09-08 2007-07-25 ジャパンゴアテックス株式会社 ガスケット材料及びこれを用いたガスケット
US20040173978A1 (en) 2003-03-06 2004-09-09 Christopher Bowen PTFE membranes and gaskets made therefrom
US7306729B2 (en) * 2005-07-18 2007-12-11 Gore Enterprise Holdings, Inc. Porous PTFE materials and articles produced therefrom
JP2007051257A (ja) * 2005-08-19 2007-03-01 Japan Gore Tex Inc シール材及びその製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0389133U (ja) * 1989-12-28 1991-09-11
JPH03221541A (ja) * 1990-01-29 1991-09-30 Daikin Ind Ltd ポリテトラフルオロエチレン多孔膜およびその製造方法
JPH10237203A (ja) * 1996-12-27 1998-09-08 Umei Taikako Kofun Yugenkoshi ポリテトラフルオロエチレン多孔質成形体

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8673440B2 (en) * 2009-10-30 2014-03-18 Bha Altair, Llc Porous membrane
JP2013053195A (ja) * 2011-09-02 2013-03-21 Nitto Denko Corp 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

Also Published As

Publication number Publication date
CA2700251A1 (en) 2009-03-26
US20100283214A1 (en) 2010-11-11
CA2700251C (en) 2012-07-31
JP5207694B2 (ja) 2013-06-12
EP2208615B1 (en) 2012-12-19
EP2208615A1 (en) 2010-07-21
JP2009073051A (ja) 2009-04-09
EP2208615A4 (en) 2011-10-26
US8784983B2 (en) 2014-07-22

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