FR2374153A1 - Procede pour la production d'objets en polytetrafluorethylene poreux - Google Patents

Procede pour la production d'objets en polytetrafluorethylene poreux

Info

Publication number
FR2374153A1
FR2374153A1 FR7737212A FR7737212A FR2374153A1 FR 2374153 A1 FR2374153 A1 FR 2374153A1 FR 7737212 A FR7737212 A FR 7737212A FR 7737212 A FR7737212 A FR 7737212A FR 2374153 A1 FR2374153 A1 FR 2374153A1
Authority
FR
France
Prior art keywords
ptfe
mould
oven
porous
sintering
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
FR7737212A
Other languages
English (en)
French (fr)
Other versions
FR2374153B1 (hu
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical 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
Priority claimed from GB5301976A external-priority patent/GB1567055A/en
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of FR2374153A1 publication Critical patent/FR2374153A1/fr
Application granted granted Critical
Publication of FR2374153B1 publication Critical patent/FR2374153B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/28—Splitting layers from work; Mutually separating layers by cutting
    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
    • B29C67/205—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored comprising surface fusion, and bonding of particles to form voids, e.g. sintering
    • 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
    • C08J9/24—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by surface fusion and bonding of particles to form voids, e.g. sintering
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/006—Pressing and sintering powders, granules or fibres
    • 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
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
FR7737212A 1976-12-20 1977-12-09 Procede pour la production d'objets en polytetrafluorethylene poreux Granted FR2374153A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB5302076 1976-12-20
GB5301976A GB1567055A (en) 1976-12-20 1976-12-20 Method of making articles of porous polytetrafluorothylene

Publications (2)

Publication Number Publication Date
FR2374153A1 true FR2374153A1 (fr) 1978-07-13
FR2374153B1 FR2374153B1 (hu) 1980-08-22

Family

ID=26267178

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7737212A Granted FR2374153A1 (fr) 1976-12-20 1977-12-09 Procede pour la production d'objets en polytetrafluorethylene poreux

Country Status (4)

Country Link
JP (1) JPS5378269A (hu)
DE (1) DE2756644C2 (hu)
FR (1) FR2374153A1 (hu)
IT (1) IT1114693B (hu)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2541693A1 (fr) * 1983-02-28 1984-08-31 Chemplast Inc Procede et appareil de fabrication de filaments de resine fluorocarbonee
EP0247771A1 (en) * 1986-05-29 1987-12-02 National Research Development Corporation Porous PTFE

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6434408A (en) * 1987-07-30 1989-02-03 Toray Industries Porous membrane of polytetrafluoroethylene-base resin and production thereof
JPS6434407A (en) * 1987-07-30 1989-02-03 Toray Industries Porous membrane of polytetrafluoroethylene-base resin and production thereof
AT501770B1 (de) * 2005-04-07 2007-10-15 Michel Wolfgang Ing Verfahren zur herstellung einer profilierten bahn aus polytetrafluorethylen
DE102007019447B4 (de) * 2007-04-25 2009-05-07 Spinner Gmbh Hochfrequenzbauteil mit geringen dielektrischen Verlusten
CN102202871A (zh) * 2008-10-23 2011-09-28 株式会社钟化 热塑性树脂发泡膜的制造方法和热塑性树脂发泡膜
DE102009020621B4 (de) * 2009-05-09 2011-03-03 Fecken-Kirfel Gmbh & Co. Kg Folienschälverfahren

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR920221A (fr) * 1944-09-20 1947-04-01 Du Pont Procédé de façonnage d'objets en polytétrafluoroéthylène, produits en résultant et leurs applications

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1199972B (de) * 1956-11-20 1965-09-02 Montedison Spa Verfahren zur Herstellung von mikro-poroesen gasdurchlaessigen Erzeugnissen aus Polytetrafluoraethylen
DE1115441B (de) * 1958-02-01 1961-10-19 Ewald Merkel Dipl Ing Verfahren und Vorrichtung zum Herstellen von insbesondere poroesen Hohlkoerpern aus Stoffen auf der Basis von Polyhalogen-Kohlenwasserstoffen unter Anwendung des Sinterns
DE1769315C3 (de) * 1968-05-07 1973-09-13 Farbwerke Hoechst Ag, Vormals Meister Lucius & Bruening, 6000 Frankfurt Schaumstoffe aus Tetrafluorathylen Polymerisaten

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR920221A (fr) * 1944-09-20 1947-04-01 Du Pont Procédé de façonnage d'objets en polytétrafluoroéthylène, produits en résultant et leurs applications

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2541693A1 (fr) * 1983-02-28 1984-08-31 Chemplast Inc Procede et appareil de fabrication de filaments de resine fluorocarbonee
EP0247771A1 (en) * 1986-05-29 1987-12-02 National Research Development Corporation Porous PTFE

Also Published As

Publication number Publication date
DE2756644A1 (de) 1978-06-22
IT1114693B (it) 1986-01-27
DE2756644C2 (de) 1982-08-12
JPS5378269A (en) 1978-07-11
FR2374153B1 (hu) 1980-08-22

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Legal Events

Date Code Title Description
ST Notification of lapse