GB1280172A - Heat shrinkable fluorocarbon tubing - Google Patents

Heat shrinkable fluorocarbon tubing

Info

Publication number
GB1280172A
GB1280172A GB42281/69A GB4228169A GB1280172A GB 1280172 A GB1280172 A GB 1280172A GB 42281/69 A GB42281/69 A GB 42281/69A GB 4228169 A GB4228169 A GB 4228169A GB 1280172 A GB1280172 A GB 1280172A
Authority
GB
United Kingdom
Prior art keywords
fluorocarbon
tubing
heating
heat shrinkable
tube
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
GB42281/69A
Inventor
Berten E Ely
Ira T Clement
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.)
PENNSYLVANIA FLUOROCARBON COMP
Original Assignee
PENNSYLVANIA FLUOROCARBON COMP
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 PENNSYLVANIA FLUOROCARBON COMP filed Critical PENNSYLVANIA FLUOROCARBON COMP
Publication of GB1280172A publication Critical patent/GB1280172A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions 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; Compositions of derivatives of such polymers
    • C08L27/02—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/12—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08L27/20—Homopolymers or copolymers of hexafluoropropene
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of 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
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/003—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor characterised by the choice of 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
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/06—Making preforms having internal stresses, e.g. plastic memory
    • B29C61/08—Making preforms having internal stresses, e.g. plastic memory by stretching tubes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions 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; Compositions of derivatives of such polymers
    • C08L27/02—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/12—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08L27/18—Homopolymers or copolymers or tetrafluoroethene
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/06—Hoses, i.e. flexible pipes made of rubber or flexible plastics with homogeneous wall
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/12—Rigid pipes of plastics with or without reinforcement
    • F16L9/127—Rigid pipes of plastics with or without reinforcement the walls consisting of a single layer
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • 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)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

1280172 Extruding fluorocarbon heat shrinkable tubing PENNSYLVANIA FLUOROCARBON CO Inc 25 Aug 1969 42281/69 Heading B5A [Also in Divisions C3 and F2] Fluorocarbon heat shrinkable and heat sealable tubing, wherein the fluorocarbon is a copolymer of from 50-95% by weight of tetrafluoroethylene and from 5 to 50% by weight of hexafluoropropylene having a tensile strength of at least 4000 p.s.i., is made by melt extruding the copolymer as a tube at a controlled temperature and rate (see below), heating the tube to a temperature in the range 200-480‹ F. whilst expanding it against a surrounding mandrel by internal pressure and cooling the tube whilst expanding or when expanded. The polymer is extruded by means of a screw extruder in which the upstream barrel temperature is between 580‹ and 600‹ F., the downstream barrel temperature is between 560-580‹ F. and the rate of extrusion is related to the diameter of the screw as follows:- The heat shrinkable tubing so formed has ratios of expanded diameter to recovered diameter between 2À02-2À50, wall thicknesses in the range 0À015-0À060 inch and is preferably made transparent. The post-extrusion heating may be infra-red, hot air or hot liquid heating or as shown in Fig. 3, an electrical resistance heater 27. Mandrel 28 is preferably of glass and end 31 is closed by heat-sealing, pinching or alternatively by means of a plug. The internal pressure may be applied by gas, e.g. compressed air, nitrogen or carbon dioxide, by liquid, e.g oil or liquid metal, or mechanically by means of an expandable mandrel. The tubing is particularly intended for use as electrical insulation and because of the relatively high contraction on heating may be used on tapered objects, see Fig. 5 (not reproduced).
GB42281/69A 1969-11-05 1969-08-25 Heat shrinkable fluorocarbon tubing Expired GB1280172A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6937976A FR2067480A5 (en) 1969-11-05 1969-11-05

Publications (1)

Publication Number Publication Date
GB1280172A true GB1280172A (en) 1972-07-05

Family

ID=9042624

Family Applications (1)

Application Number Title Priority Date Filing Date
GB42281/69A Expired GB1280172A (en) 1969-11-05 1969-08-25 Heat shrinkable fluorocarbon tubing

Country Status (4)

Country Link
AU (1) AU434414B2 (en)
DE (1) DE1944111A1 (en)
FR (1) FR2067480A5 (en)
GB (1) GB1280172A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353955A1 (en) * 1976-06-04 1977-12-30 Gte Sylvania Inc PROTECTION DEVICE TRANSMITTING ULTRAVIOLET RAYS FOR FLUORESCENT LAMP
EP0091766A2 (en) * 1982-04-08 1983-10-19 E.I. Du Pont De Nemours And Company Perfluorocarbon copolymer films
US4791245A (en) * 1986-07-15 1988-12-13 Raychem Limited Terminated electric cable
GB2251471A (en) * 1988-04-13 1992-07-08 Nu Pipe Inc Forming pipe with memory of reduced form
CN111556942A (en) * 2018-01-04 2020-08-18 郡是株式会社 Thermoplastic fluorine-containing resin pipe
CN114364721A (en) * 2019-08-30 2022-04-15 日星电气有限公司 Heat shrinkable tube and method for forming the same
CN114364721B (en) * 2019-08-30 2024-07-09 日星电气有限公司 Heat-shrinkable tube and method for forming the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2503609C2 (en) * 1974-03-14 1986-06-05 E.I. Du Pont De Nemours And Co., Wilmington, Del. Process for producing heat-shrinkable plastic tubing and apparatus for carrying out the process
US4824898A (en) * 1987-03-27 1989-04-25 Asahi Kasei Kogyo Kabushiki Kaisha Shaped article of a tetrafluoroethylene polymer

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353955A1 (en) * 1976-06-04 1977-12-30 Gte Sylvania Inc PROTECTION DEVICE TRANSMITTING ULTRAVIOLET RAYS FOR FLUORESCENT LAMP
EP0091766A2 (en) * 1982-04-08 1983-10-19 E.I. Du Pont De Nemours And Company Perfluorocarbon copolymer films
EP0091766A3 (en) * 1982-04-08 1984-09-12 E.I. Du Pont De Nemours And Company Perfluorocarbon copolymer films
US4791245A (en) * 1986-07-15 1988-12-13 Raychem Limited Terminated electric cable
GB2251471A (en) * 1988-04-13 1992-07-08 Nu Pipe Inc Forming pipe with memory of reduced form
GB2251471B (en) * 1988-04-13 1992-12-02 Nu Pipe Inc Method and apparatus for installing a replacement pipe in an existing underground conduit
CN111556942A (en) * 2018-01-04 2020-08-18 郡是株式会社 Thermoplastic fluorine-containing resin pipe
CN111556942B (en) * 2018-01-04 2022-06-14 郡是株式会社 Thermoplastic fluorine-containing resin pipe
US11802199B2 (en) 2018-01-04 2023-10-31 Gunze Limited Thermoplastic fluororesin tube
CN114364721A (en) * 2019-08-30 2022-04-15 日星电气有限公司 Heat shrinkable tube and method for forming the same
CN114364721B (en) * 2019-08-30 2024-07-09 日星电气有限公司 Heat-shrinkable tube and method for forming the same

Also Published As

Publication number Publication date
DE1944111A1 (en) 1971-04-01
AU6199569A (en) 1971-04-22
AU434414B2 (en) 1973-04-02
FR2067480A5 (en) 1971-08-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee