CH372835A - Method and device for producing flexible membranes or membrane coverings from polytetrafluoroethylene - Google Patents

Method and device for producing flexible membranes or membrane coverings from polytetrafluoroethylene

Info

Publication number
CH372835A
CH372835A CH6593558A CH6593558A CH372835A CH 372835 A CH372835 A CH 372835A CH 6593558 A CH6593558 A CH 6593558A CH 6593558 A CH6593558 A CH 6593558A CH 372835 A CH372835 A CH 372835A
Authority
CH
Switzerland
Prior art keywords
polytetrafluoroethylene
flexible membranes
producing flexible
membrane coverings
coverings
Prior art date
Application number
CH6593558A
Other languages
German (de)
Inventor
Breadwell Laming Patrick
Hector Price Richard
Henderson Alan
Philip Jones Alan
Original Assignee
Saunders Valve 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 Saunders Valve Co Ltd filed Critical Saunders Valve Co Ltd
Publication of CH372835A publication Critical patent/CH372835A/en

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
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/007—Treatment of sinter powders
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • 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
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • 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
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/02—Diaphragms
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
    • 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
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • B29C2043/3613—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons applying pressure locally
    • 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
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • B29C2043/3615—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices
    • 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
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • B29C2043/5875—Measuring, controlling or regulating the material feed to the moulds or mould parts, e.g. controlling feed flow, velocity, weight, doses
    • B29C2043/5883—Measuring, controlling or regulating the material feed to the moulds or mould parts, e.g. controlling feed flow, velocity, weight, doses ensuring cavity filling, e.g. providing overflow means
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several steps
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
    • 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
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/52—Heating or cooling
    • 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
    • B29K2105/25—Solid
    • B29K2105/251—Particles, powder or granules
    • 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
    • B29L2031/755—Membranes, diaphragms

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Diaphragms And Bellows (AREA)
  • Powder Metallurgy (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
CH6593558A 1957-11-08 1958-11-07 Method and device for producing flexible membranes or membrane coverings from polytetrafluoroethylene CH372835A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3491957A GB901184A (en) 1957-11-08 1957-11-08 Improvements in and relating to flexible diaphragms or facings

Publications (1)

Publication Number Publication Date
CH372835A true CH372835A (en) 1963-10-31

Family

ID=10371551

Family Applications (1)

Application Number Title Priority Date Filing Date
CH6593558A CH372835A (en) 1957-11-08 1958-11-07 Method and device for producing flexible membranes or membrane coverings from polytetrafluoroethylene

Country Status (6)

Country Link
BE (1) BE572774A (en)
CH (1) CH372835A (en)
DE (1) DE1234372B (en)
FR (1) FR1214317A (en)
GB (1) GB901184A (en)
NL (2) NL111823C (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA989127A (en) * 1971-03-01 1976-05-18 Norbert L. Bradley Scrapless forming of plastic articles
JPS5791246A (en) * 1980-11-29 1982-06-07 Yoshida Kogyo Kk <Ykk> Method and apparatus for molding cubic part automatically and decoratively
JP2726014B2 (en) * 1995-01-06 1998-03-11 株式会社ワイ・テイ・エス Diaphragm assembly and method of manufacturing the same
US6230609B1 (en) * 1999-06-03 2001-05-15 Norton Performance Plastics Corporation Fluoropolymer diaphragm with integral attachment device
DE10216661A1 (en) * 2002-04-15 2003-10-30 Gottlob Dietz Gmbh Composite membrane for membrane valve has cover layer as sintered compact vulcanized onto backing layer, with both layers centrally interconnected in flat region with diameter smaller than effective diameter of membrane
FR2885840B1 (en) * 2005-05-20 2007-08-10 Solvay METHOD AND MOLD FOR MOLDING STRUCTURED PLATES
DE102014222522A1 (en) * 2014-11-05 2016-05-12 GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG Pressing device and method for operating the pressing device
JP2018505073A (en) * 2015-01-21 2018-02-22 トヨタ モーター ヨーロッパ Mold and method for molding plastic sheet
CN108372669A (en) * 2018-03-06 2018-08-07 南京道隆生物科技有限公司 A kind of sanitation-grade diaphragm and its manufacturing process
BE1030544B1 (en) * 2022-05-18 2023-12-18 Vaneflon Nv METHOD FOR MANUFACTURING A ROD-SHAPED FLUOROPOLIMER PRODUCT

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL60736C (en) * 1942-11-24
US2400099A (en) * 1943-10-25 1946-05-14 Du Pont Process for obtaining shaped articles

Also Published As

Publication number Publication date
DE1234372B (en) 1967-02-16
FR1214317A (en) 1960-04-07
GB901184A (en) 1962-07-18
NL232972A (en)
BE572774A (en)
NL111823C (en)

Similar Documents

Publication Publication Date Title
CH436115A (en) Upholstery material, method of making the same and apparatus for carrying out the method
CH399729A (en) Method and device for the production of pipes from thermoplastic material
AT206119B (en) Method and device for the production of adhesive spreads of limited area
CH407699A (en) Method and device for the production of foils
CH387285A (en) Method and device for the production of openwork plastic films and plastic nets
CH389237A (en) Method and device for the production and transport of shaped panels intended for pressing
CH377786A (en) Method and device for the production of single-crystal rods
CH400509A (en) Method and device for the production of honeycomb beams
CH372835A (en) Method and device for producing flexible membranes or membrane coverings from polytetrafluoroethylene
CH388663A (en) Method and device for performing chromatographic analyzes
CH347345A (en) Method for extrusion of hoses made of thermoplastic material and device for carrying out the method
AT187302B (en) Method and device for the production of porous plastic sheets
CH399155A (en) Method and device for the production of pasta
CH420819A (en) Process for the production of drained potatoes and apparatus for carrying out the process
AT204255B (en) Method and device for the production of porous plastic sheets
CH395739A (en) Method and device for the electro-mechanical production of screen clichés
CH345123A (en) Method and device for the production of multilayer glazing elements
CH357387A (en) Process and apparatus for the production of urea
CH345782A (en) Method and device for the production of bare rod material
CH371341A (en) Method and device for producing gravure forms
CH368817A (en) Method for evaporating liquids and device for carrying out the method
AT223915B (en) Method and device for the continuous production of profiles, in particular pipes
CH358104A (en) Copier element for electrostatic printing and method for producing the copier element
CH360771A (en) Method and device for the production of foam glass
CH388228A (en) Method and device for the production of profiles, in particular bars, wires or strips