EP0500449A1 - Mittels eines isolierenden Mantels isolierter Langkörper - Google Patents

Mittels eines isolierenden Mantels isolierter Langkörper Download PDF

Info

Publication number
EP0500449A1
EP0500449A1 EP92400424A EP92400424A EP0500449A1 EP 0500449 A1 EP0500449 A1 EP 0500449A1 EP 92400424 A EP92400424 A EP 92400424A EP 92400424 A EP92400424 A EP 92400424A EP 0500449 A1 EP0500449 A1 EP 0500449A1
Authority
EP
European Patent Office
Prior art keywords
varnish
body according
tape
envelope
width
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
EP92400424A
Other languages
English (en)
French (fr)
Other versions
EP0500449B1 (de
Inventor
Jean-Pierre Ferlier
Michel C/O Filotex Marechal
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.)
Filotex SA
Original Assignee
Filotex SA
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 Filotex SA filed Critical Filotex SA
Publication of EP0500449A1 publication Critical patent/EP0500449A1/de
Application granted granted Critical
Publication of EP0500449B1 publication Critical patent/EP0500449B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/16—Insulating conductors or cables by passing through or dipping in a liquid bath; by spraying
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/08—Insulating conductors or cables by winding
    • H01B13/0891—After-treatment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H01B7/0241—Disposition of insulation comprising one or more helical wrapped layers of insulation
    • H01B7/025—Disposition of insulation comprising one or more helical wrapped layers of insulation comprising in addition one or more other layers of non-helical wrapped insulation

Definitions

  • the present invention relates to an elongated body insulated by means of an envelope made of an insulating material.
  • An elongated body is any body of great length in front of its diameter.
  • elongated bodies are qualified as electrical conductors or cables of all kinds, hollow profile bars, tubes, pipes, or more generally pipelines.
  • the present invention relates in particular to the insulation of cables or electrical conductors. We will focus in the following on the case of electrical conductors.
  • Patent application FR-2 119 939 reports an electrical conductor insulated by means of a taping with an overlap rate at least equal to 50% of a tape made of a synthetic material. This tape is then covered with a varnish of a dried and hardened synthetic material.
  • the preferential recovery rates indicated in this document lead in practice to making so-called “overlapping” or “ribbed” tapes. The presence of these overlaps results in an irregularity in the radial thickness of the conductor; therefore, a smooth exterior surface cannot be obtained.
  • the object of the present invention is therefore to mark out an elongated body with tape insulation having a smooth external appearance.
  • the present invention provides for this purpose an elongated body insulated by means of an insulating envelope, said envelope consisting of a tape of synthetic material tape around said body, and covered with a layer of varnish of a synthetic material, characterized in that the taping is such that there is a groove between the free edge of any part of the coil not covered by the following turns and the surface not covered with the preceding coil, the width of said groove being substantially between 0 and 5 % of the width of said ribbon, and strictly greater than zero.
  • the grooves have a width substantially equal to 1% of that of the ribbon. This value allows the varnish to hang well in the grooves before coating the ribbon.
  • the layer of varnish can be deposited by soaking in a bath containing the varnish, then undergoing a heat treatment, such as sintering, intended to remove the volatile substances contained in the varnish and to cook the latter.
  • the varnish contains suitable surfactants allowing it, before heat treatment, to hang on the surface which it covers.
  • the layer of varnish can also be deposited by an electrostatic process or by a fluidized bed process.
  • the invention can be applied for example to the external insulation of electric cables, electric conductors, tubes, pipes, or conduits.
  • the electric cables, electric conductors, tubes, pipes, conduits or bars of hollow profiles thus obtained have a smooth external surface and a concentricity greater than 90%.
  • the conductor 7 thus obtained is coated with varnish in a varnishing oven 8 (see FIG. 3).
  • the varnishing is carried out in three passes P i , P 2 and P 3 .
  • the conductor 7 is dipped in a coating tank 9 containing an aqueous dispersion (or varnish) of polytetrafluoroethylene (PTFE) to which surface-active agents have been added.
  • PTFE polytetrafluoroethylene
  • surfactants are adapted to the PTFE varnish so that, when the conductor 7 is removed from the tank 9, the still liquid varnish fills the grooves 4 and plies the conductor 7 while hanging on the surface of the conductor and does not "flow” as would happen if the width of the joints was not adapted and if the surface tension created by the surfactants does not was not optimized.
  • the conductor 7 coated with the PTFE varnish undergoes, in a vertical baking tower 10, a heat treatment (or sintering) intended to remove the solvents and to bake the varnish.
  • the final wiring wire obtained therefore has an upper layer of varnish 11 coating the tape and inserted into the grooves 4.
  • This layer of varnish has a thickness of between 27 and 36 ⁇ .
  • the wiring wire has, thanks to the coating of varnish and the presence of thin gaps, a smooth exterior appearance offering no point of attack for mechanical forces which could give rise to tearing or tearing of the insulating envelope, and a good concentricity characteristic of the strips, that is to say greater than 90%.
  • the cabling wires according to the invention also have gaps of reduced width allowing the varnish not to slip on the tape and to fill the grooves formed before coating the ribbon to form a smooth envelope.
  • the manufacture of the wiring wires according to the invention does not involve any complex modification of conventional technologies. Indeed, a conventional tape tray is used by simply adapting the tape pitch to the desired covering coefficient, and the varnishing is also carried out according to a conventional technique.
  • the product obtained is of better quality, and has electrical, chemical and operating voltage characteristics identical to those of the taped or extruded insulation wiring wires of the prior art. In particular, the external insulation obtained is capable of withstanding electrical and mechanical stresses.
  • the width of the gap is not necessarily equal to 1% of the width of the ribbon, and it can preferably take any value between 0 and 5% and always strictly greater than 0.
  • the varnish may slip on the tape without filling the gaps, even in the presence of tension-active agents. It would then be more difficult to obtain a smooth insulating envelope.
  • PTFE tape with a varnish in aqueous solution of ethylene-propylene fluorinated copolymer (FEP) or a polyimide tape (like "KAPTON” - registered trademark) with a polyurethane varnish or polyimide, or finally a polyester tape with a nylon or polyester varnish.
  • FEP ethylene-propylene fluorinated copolymer
  • polyimide tape like "KAPTON” - registered trademark
  • the inventon can be applied to a structure other than that of the wiring wire, such as for example a coaxial cable whose outer insulating envelope consists of a composite tape of polyimide and PTFE and a varnish PTFE or FEP.
  • a coaxial cable whose outer insulating envelope consists of a composite tape of polyimide and PTFE and a varnish PTFE or FEP.
  • all the pairs of materials mentioned above can also be used to produce the outer envelope of a coaxial cable.
  • the invention makes it possible to produce an insulating envelope having all the necessary qualities.
  • the invention can be applied to the insulation of any elongated body and in particular to that of cables of all types, including fiber optic cables, electrical conductors of all kinds and possibly pipes, tubes. or pipes whose working environment implies an insulating protection having the qualities of that produced according to the invention.
  • the invention can also be applied to the manufacture of hollow profile bars. For this, it suffices to provide the insulation on a support or support body which is removed after manufacture of the shaped profile bar.
  • the thickness of the ribbon can be between 50 and 200 ⁇ and its width between 7 and 12 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulating Bodies (AREA)
  • Decoration Of Textiles (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Insulated Conductors (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)
EP92400424A 1991-02-22 1992-02-18 Mittels eines isolierenden Mantels isolierter Langkörper Expired - Lifetime EP0500449B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9102161 1991-02-22
FR9102161A FR2673318A1 (fr) 1991-02-22 1991-02-22 Procede de realisation d'une enveloppe isolante autour d'un corps allonge, et produit obtenu par ce procede.

Publications (2)

Publication Number Publication Date
EP0500449A1 true EP0500449A1 (de) 1992-08-26
EP0500449B1 EP0500449B1 (de) 1994-12-07

Family

ID=9410006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92400424A Expired - Lifetime EP0500449B1 (de) 1991-02-22 1992-02-18 Mittels eines isolierenden Mantels isolierter Langkörper

Country Status (6)

Country Link
US (1) US5218170A (de)
EP (1) EP0500449B1 (de)
JP (1) JPH0581931A (de)
CA (1) CA2061588C (de)
DE (1) DE69200777T2 (de)
FR (1) FR2673318A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04296316A (ja) * 1990-12-18 1992-10-20 General Electric Co <Ge> 耐熱性樹脂組成物、製品及び方法
FR2686727B1 (fr) * 1992-01-28 1997-01-31 Filotex Sa Conducteur electrique et cable electrique contenant un tel conducteur.
US5393105A (en) * 1992-12-24 1995-02-28 Petterson; Bart Ductwork for delivery of low temperature air
US5594230A (en) * 1993-02-18 1997-01-14 Norand Corporation Analyzer for bar code readers and decoders
DE4323121A1 (de) * 1993-07-10 1995-02-23 Hoechst Ag Abriebbeständige Fluorpolymer-Mischungen
US5721397A (en) * 1995-06-07 1998-02-24 Weinberg; Martin J. Electrical insulation and products protected thereby
JP2002170439A (ja) * 2000-11-30 2002-06-14 Ngk Spark Plug Co Ltd 耐熱性被覆電線
US7472724B2 (en) * 2003-08-18 2009-01-06 Electrolock, Inc. Method and apparatus for creating, using, and dispensing tubes
FR2861158B1 (fr) * 2003-10-17 2006-01-27 Technip France Conduite tubulaire flexible notamment pour exploitation petroliere, a enroulement de ptfe.
US20150167868A1 (en) * 2013-12-17 2015-06-18 Scott Boncha Maple sap vacuum collection systems with chew proof tubing

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB902567A (en) * 1958-02-06 1962-08-01 Reyrolle A & Co Ltd Improvements relating to elongated electrical conductors embedded in cast resin solid insulation
FR1571555A (de) * 1967-06-10 1969-06-20
FR2119939A1 (de) * 1970-11-25 1972-08-11 British Insulated Callenders
FR2555799A1 (fr) * 1983-11-25 1985-05-31 Filotex Sa Cable electrique, notamment pour usage aerospatial, a caracteristiques electriques ameliorees
EP0363064A1 (de) * 1988-10-03 1990-04-11 AT&T Corp. Isolierungsanordnung für Leiter

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1362179A (en) * 1920-02-03 1920-12-14 Free & Easy Belt Co Trousers-supporter
US3488537A (en) * 1967-04-04 1970-01-06 Gen Electric Dynamoelectric machine having fluorocarbon plastic film insulation and method of making the same
US3617617A (en) * 1970-06-12 1971-11-02 Du Pont Insulated electrical conductor
JPS5233100A (en) * 1975-09-09 1977-03-12 Mitsubishi Electric Corp Method to manufacture an insulated conductor
BE885751Q (fr) * 1976-08-27 1981-02-16 Kendall & Co Procede et appareil pour appliquer un liquide moussable sur un objet cylindrique
JPS57130304A (en) * 1981-02-02 1982-08-12 Chiyanpurein Cable Corp Insulating system for wire or cable
US4471022A (en) * 1981-04-17 1984-09-11 Essex Group, Inc. Water soluble polyimide, coated wire and method of coating
JPS63216209A (ja) * 1987-03-04 1988-09-08 株式会社東芝 絶縁電線
SE457030B (sv) * 1987-03-24 1988-11-21 Asea Ab Elektriskt isolermaterial omfattande ett isolerskikt av en organisk polymer samt anvaendning av isolermaterialet i en haerva.
US4851060A (en) * 1987-08-12 1989-07-25 Essex Group, Inc. Multilayer wrapped insulated magnet wire

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB902567A (en) * 1958-02-06 1962-08-01 Reyrolle A & Co Ltd Improvements relating to elongated electrical conductors embedded in cast resin solid insulation
FR1571555A (de) * 1967-06-10 1969-06-20
FR2119939A1 (de) * 1970-11-25 1972-08-11 British Insulated Callenders
FR2555799A1 (fr) * 1983-11-25 1985-05-31 Filotex Sa Cable electrique, notamment pour usage aerospatial, a caracteristiques electriques ameliorees
EP0363064A1 (de) * 1988-10-03 1990-04-11 AT&T Corp. Isolierungsanordnung für Leiter

Also Published As

Publication number Publication date
CA2061588A1 (fr) 1992-08-23
EP0500449B1 (de) 1994-12-07
DE69200777D1 (de) 1995-01-19
JPH0581931A (ja) 1993-04-02
DE69200777T2 (de) 1995-04-13
US5218170A (en) 1993-06-08
CA2061588C (fr) 1998-12-29
FR2673318A1 (fr) 1992-08-28

Similar Documents

Publication Publication Date Title
EP0964408B1 (de) Informationsübertragungskabel und sein Herstellungsverfahren
EP0704735B1 (de) Elektrischer Isolator mit optischen Fasern und zugehöriges Herstellungsverfahren
EP0696750B1 (de) Herstellungsverfahren für ein verstärktes faseroptisches Kabel, zugehörige Vorrichtung und Kabel mittels diesem Verfahren gefertigt
FR2908895A1 (fr) Cables lisses et multilignes a rapport resistance/poids eleve
CA1137284A (fr) Procede de fabrication d&#39;un element isolant comportant une portion centrale entouree d&#39;une pluralite d&#39;ailettes, et element isolant obtenu par ce procede
EP0500449B1 (de) Mittels eines isolierenden Mantels isolierter Langkörper
FR2693828A1 (fr) Câble pour signaux comportant un écran en polymère recouvert de métal.
BE898104R (fr) Cable à fibres optiques.
CA2088215C (fr) Cable electrique haute frequence
FR2728694A1 (fr) Module pour cables a fibres optiques, procede de fabrication et installation a cet effet
CA1189584A (fr) Cable de telecommande a element central textile positionne
EP0311941B1 (de) Fabrikationsverfahren für ein optisches Kabel und danach hergestelltes Kabel
EP0568415B1 (de) Isolierungsverfahren eines elektrischen Leiters und isolierter elektrischer Daht hergestellt nach diesem Verfahren
EP0294256A1 (de) Elektrisches Kabel zur Übertragung von Starkstrom und Steuerstrom
EP1037216B1 (de) Telekomkabelherstellung mit Metalldrahtgruppen mit verschiedenen Schlägen
FR2584057A1 (fr) Procede de fabrication d&#39;un objet avec un materiau composite.
EP0893803B1 (de) Elektrisch leitender Draht
FR2491511A1 (fr) Toron compose de plusieurs fils et procede pour sa fabrication
FR3144386A1 (fr) Câble blindé électrique
FR2745116A1 (fr) Cable electrique blinde et procede de fabrication d&#39;un tel cable
BE898103A (fr) Cable à fibres optiques.
EP0141723A2 (de) Herstellungsverfahren für ein faseroptisches Kabel ohne elektrisch leitende Materialien
EP1177562A1 (de) Tiefpasskabel
EP0953990A1 (de) Elektrischer Draht und Verfahren zu seiner Herstellung
FR3110765A1 (fr) câble présentant une résistance à la corrosion améliorée

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19921117

17Q First examination report despatched

Effective date: 19940325

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REF Corresponds to:

Ref document number: 69200777

Country of ref document: DE

Date of ref document: 19950119

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950118

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19990115

Year of fee payment: 8

Ref country code: FR

Payment date: 19990115

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19990122

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000218

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20000218

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050218