FR2095017A5 - Moulding fluorinated hydrocarbon polymers - Google Patents

Moulding fluorinated hydrocarbon polymers

Info

Publication number
FR2095017A5
FR2095017A5 FR7117815A FR7117815A FR2095017A5 FR 2095017 A5 FR2095017 A5 FR 2095017A5 FR 7117815 A FR7117815 A FR 7117815A FR 7117815 A FR7117815 A FR 7117815A FR 2095017 A5 FR2095017 A5 FR 2095017A5
Authority
FR
France
Prior art keywords
pressure
moulding
pref
articles
fluorinated hydrocarbon
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
Application number
FR7117815A
Other languages
French (fr)
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.)
POLYFLON RESINE SpA
Original Assignee
POLYFLON RESINE SpA
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 POLYFLON RESINE SpA filed Critical POLYFLON RESINE SpA
Application granted granted Critical
Publication of FR2095017A5 publication Critical patent/FR2095017A5/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
    • 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
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/02—Thermal after-treatment
    • 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
    • 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
    • B29K2105/25—Solid
    • B29K2105/251—Particles, powder or granules

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Moulding By Coating Moulds (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

Perfluorinated polyethylene granules are moulded to articles pref. >7 kg. in weight by applying gradual pressure to the granules in a mould to a pressure of 140-350 kg./cm2, then relaxing the pressure after a certain time at the same rate as it was increased. The formed article is then subjected to (pref. a series of) strain relaxing processes by heating to 260 degrees C., holding at the temp. for a while, then cooling slowly while rotating all the while. Process gives articles of reduced thermal expansion coefficient difference to metal plates which they are subsequently adhered.
FR7117815A 1970-05-18 1971-05-17 Moulding fluorinated hydrocarbon polymers Expired FR2095017A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6869970 1970-05-18

Publications (1)

Publication Number Publication Date
FR2095017A5 true FR2095017A5 (en) 1972-02-04

Family

ID=11310324

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7117815A Expired FR2095017A5 (en) 1970-05-18 1971-05-17 Moulding fluorinated hydrocarbon polymers

Country Status (6)

Country Link
BE (1) BE767236A (en)
CH (1) CH551275A (en)
ES (1) ES390897A1 (en)
FR (1) FR2095017A5 (en)
NL (1) NL7106824A (en)
SE (1) SE366680B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0970799A1 (en) † 1997-03-19 2000-01-12 Daikin Industries, Ltd. Molded polytetrafluoroethylene article and method of production thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0970799A1 (en) † 1997-03-19 2000-01-12 Daikin Industries, Ltd. Molded polytetrafluoroethylene article and method of production thereof
EP0970799B2 (en) † 1997-03-19 2010-09-08 Daikin Industries, Ltd. method of production of a molded polytetrafluoroethylene article

Also Published As

Publication number Publication date
ES390897A1 (en) 1973-07-01
CH551275A (en) 1974-07-15
DE2124419B2 (en) 1973-01-11
BE767236A (en) 1971-10-01
DE2124419A1 (en) 1972-01-13
SE366680B (en) 1974-05-06
NL7106824A (en) 1971-11-22

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Legal Events

Date Code Title Description
ST Notification of lapse