JPS55108425A - Production of porous polytetrafluoroethylene film - Google Patents

Production of porous polytetrafluoroethylene film

Info

Publication number
JPS55108425A
JPS55108425A JP1631379A JP1631379A JPS55108425A JP S55108425 A JPS55108425 A JP S55108425A JP 1631379 A JP1631379 A JP 1631379A JP 1631379 A JP1631379 A JP 1631379A JP S55108425 A JPS55108425 A JP S55108425A
Authority
JP
Japan
Prior art keywords
film
film material
heating zone
draw
films
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.)
Granted
Application number
JP1631379A
Other languages
Japanese (ja)
Other versions
JPS5825368B2 (en
Inventor
Kanji Kawakami
Yasuhiro Moriyama
Yoshifumi Okamoto
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.)
Nitto Denko Corp
Original Assignee
Nitto Electric Industrial 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 Nitto Electric Industrial Co Ltd filed Critical Nitto Electric Industrial Co Ltd
Priority to JP54016313A priority Critical patent/JPS5825368B2/en
Publication of JPS55108425A publication Critical patent/JPS55108425A/en
Publication of JPS5825368B2 publication Critical patent/JPS5825368B2/en
Expired 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
    • B29C55/02—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
    • 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

Landscapes

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

Abstract

PURPOSE: To produce title thick film, by setting a film material composed at least two overlapped unbaked polytetrafluoroethylene films on a draw machine with both ends of the material in the draw direction placed outside the heating zone, and simultaneously drawing and uniting the film material inside the heating zone.
CONSTITUTION: Title porous film is produced by winding a film material composed of at least two overlapped unbaked polytetrafluroetylene (PTEE) films around a tubular spindle in a roll form; setting the film material 1 on the feed side of a draw machine; leading the one end in the longitudinal direction to a take-up roll 2; applying cold air blow to the film at pinch rolls 4 and 5 in order to prevent fusion of the film; raising the temperature in the heating zone 3 to a temperature higher than the m.p. of the PTFE; and drawing the film material in at least one direction at a draw ratio of 20W400%, whereby the films are united and made porous.
COPYRIGHT: (C)1980,JPO&Japio
JP54016313A 1979-02-14 1979-02-14 Method for manufacturing porous polytetrafluoroethylene film Expired JPS5825368B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54016313A JPS5825368B2 (en) 1979-02-14 1979-02-14 Method for manufacturing porous polytetrafluoroethylene film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54016313A JPS5825368B2 (en) 1979-02-14 1979-02-14 Method for manufacturing porous polytetrafluoroethylene film

Publications (2)

Publication Number Publication Date
JPS55108425A true JPS55108425A (en) 1980-08-20
JPS5825368B2 JPS5825368B2 (en) 1983-05-27

Family

ID=11913020

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54016313A Expired JPS5825368B2 (en) 1979-02-14 1979-02-14 Method for manufacturing porous polytetrafluoroethylene film

Country Status (1)

Country Link
JP (1) JPS5825368B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57131236A (en) * 1980-11-06 1982-08-14 Gore & Ass Multi-component porous high strength ptfe products and manufacture
FR2594744A1 (en) * 1986-02-21 1987-08-28 Reinmann & Cie Lara PROCESS FOR THE MANUFACTURE OF MOLDED, STRETCHED, POROUS, FLUORINE POLYMERIC PARTS, ESPECIALLY POLYTETRAFLUORETHYLENE
US4862328A (en) * 1985-08-13 1989-08-29 Asahi Glass Company Ltd. Electric double layer capacitor
US5552100A (en) * 1995-05-02 1996-09-03 Baxter International Inc. Method for manufacturing porous fluoropolymer films
WO2009072373A1 (en) * 2007-12-07 2009-06-11 Nitto Denko Corporation Porous polytetrafluoroethylene film, method for production thereof, and water-proof breathable filter
EP2272902A1 (en) * 2008-04-30 2011-01-12 Nitto Denko Corporation Porous sheet, process for production thereof, and heat-insulating sheet
CN106364120A (en) * 2016-08-30 2017-02-01 上海索康医用材料有限公司 Preparation method of pure bulk polytetrafluoroethylene sheets

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4978681A (en) * 1972-12-05 1974-07-29
JPS5017474A (en) * 1973-06-16 1975-02-24

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4978681A (en) * 1972-12-05 1974-07-29
JPS5017474A (en) * 1973-06-16 1975-02-24

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57131236A (en) * 1980-11-06 1982-08-14 Gore & Ass Multi-component porous high strength ptfe products and manufacture
JPH0258291B2 (en) * 1980-11-06 1990-12-07 Daburyu Eru Goa Ando Asosheetsu Inc
US4862328A (en) * 1985-08-13 1989-08-29 Asahi Glass Company Ltd. Electric double layer capacitor
FR2594744A1 (en) * 1986-02-21 1987-08-28 Reinmann & Cie Lara PROCESS FOR THE MANUFACTURE OF MOLDED, STRETCHED, POROUS, FLUORINE POLYMERIC PARTS, ESPECIALLY POLYTETRAFLUORETHYLENE
BE1001311A3 (en) * 1986-02-21 1989-09-26 Reinmann & Cie Lara Method and device for making porous body profiles drawn and products obtained.
US5552100A (en) * 1995-05-02 1996-09-03 Baxter International Inc. Method for manufacturing porous fluoropolymer films
US20100242733A1 (en) * 2007-12-07 2010-09-30 Nitto Denko Corporation Porous polytetrafluoroethylene membrane, method for producing the same, and water-proof air permeable filter
JP2009137181A (en) * 2007-12-07 2009-06-25 Nitto Denko Corp Polytetrafluoroethylene porous film, manufacturing method of the same, and waterproof breathable filter
WO2009072373A1 (en) * 2007-12-07 2009-06-11 Nitto Denko Corporation Porous polytetrafluoroethylene film, method for production thereof, and water-proof breathable filter
CN101888928A (en) * 2007-12-07 2010-11-17 日东电工株式会社 Porous polytetrafluoroethylene film, method for production thereof, and water-proof breathable filter
US8419839B2 (en) * 2007-12-07 2013-04-16 Nitto Denko Corporation Porous polytetrafluoroethylene membrane, method for producing the same, and water-proof air permeable filter
KR101483327B1 (en) * 2007-12-07 2015-01-15 닛토덴코 가부시키가이샤 Porous polytetrafluoroethylene film, method for production thereof, and water-proof breathable filter
EP2272902A1 (en) * 2008-04-30 2011-01-12 Nitto Denko Corporation Porous sheet, process for production thereof, and heat-insulating sheet
EP2272902A4 (en) * 2008-04-30 2012-10-17 Nitto Denko Corp Porous sheet, process for production thereof, and heat-insulating sheet
US9017817B2 (en) 2008-04-30 2015-04-28 Nitto Denko Corporation Method for producing laminated porous sheet comprising polytetrafluoroethylene and carbon particles
CN106364120A (en) * 2016-08-30 2017-02-01 上海索康医用材料有限公司 Preparation method of pure bulk polytetrafluoroethylene sheets
CN106364120B (en) * 2016-08-30 2018-09-14 上海索康医用材料有限公司 A kind of preparation method of pure expanded PTFE sheet material

Also Published As

Publication number Publication date
JPS5825368B2 (en) 1983-05-27

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