EP0256422B1 - Laser-markierbares, elektrisches Kabel - Google Patents

Laser-markierbares, elektrisches Kabel Download PDF

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Publication number
EP0256422B1
EP0256422B1 EP87111246A EP87111246A EP0256422B1 EP 0256422 B1 EP0256422 B1 EP 0256422B1 EP 87111246 A EP87111246 A EP 87111246A EP 87111246 A EP87111246 A EP 87111246A EP 0256422 B1 EP0256422 B1 EP 0256422B1
Authority
EP
European Patent Office
Prior art keywords
layer
outer layer
colour
laser
underlayer
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 - Lifetime
Application number
EP87111246A
Other languages
English (en)
French (fr)
Other versions
EP0256422A1 (de
Inventor
Jean-Pierre Ferlier
Michel Maréchal
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 EP0256422A1 publication Critical patent/EP0256422A1/de
Application granted granted Critical
Publication of EP0256422B1 publication Critical patent/EP0256422B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01B13/34—Apparatus or processes specially adapted for manufacturing conductors or cables for marking conductors or cables
    • H01B13/348—Apparatus or processes specially adapted for manufacturing conductors or cables for marking conductors or cables using radiant energy, e.g. a laser beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/267—Marking of plastic artifacts, e.g. with laser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B7/00—Machines, apparatus or hand tools for branding, e.g. using radiant energy such as laser beams
    • B44B7/002—Machines, apparatus or hand tools for branding, e.g. using radiant energy such as laser beams in layered material
    • 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
    • H01B7/36—Insulated conductors or cables characterised by their form with distinguishing or length marks
    • H01B7/365—Insulated conductors or cables characterised by their form with distinguishing or length marks being indicia imposed on the insulation or conductor

Definitions

  • the present invention relates to a markable electric cable, comprising an outer layer enabling such marking to be carried out, of color contrasted with the color of an undercoat, this outer layer being a thin layer which, when marking, is destroyed throughout its thickness so as to reveal an undercoat.
  • German patent n ° 3147230 describes a cable whose external surface first receives by spraying one or two colored coatings, which are baked by HF or infrared waves before their treatment by laser radiation. .
  • this document is concerned only with the surface burning obtained by laser radiation.
  • a patent Us 4 370 542 claims the marking of a cable by laser, but it in fact only relates to the relative positioning of this cable and of the laser source.
  • Against by the present invention relates to a particular arrangement of the outer layer of an electric cable allowing marking by fine and precise laser beam.
  • the electric cable according to the invention is characterized in that the outer layer is made of polytetrafluoroethylene added with 10 to 15% of white pigments, or else of polyurethane having a concentration of white pigments greater than 30%, and in that the sub- layer is made of polytetrafluoroethylene added with 5 to 15% of dark pigments, or in aromatic polyamide added of 30 to 35% of dark pigments, capable of allowing the destruction of the outer layer in all its thickness by a laser beam and the absorption of this one by the underlay.
  • the outer layer preferably has a thickness of between 5 and 50 micrometers and the sub-layer a minimum thickness of 25 micrometers if it is made of polytetrafluoroethylene or 15 micrometers if it is made of aromatic polyamide.
  • FIG. 1 illustrates the marking by laser beam according to the invention.
  • a ray 10 from a laser source 11 is directed towards the surface of an electrical cable 12.
  • This cable comprises a thin outer layer 13, for example between 5 and 50 micrometers, which surrounds an underlayer 14. This layer exterior is destroyed throughout its thickness at the point of impact 15 of the laser beam thereon, thus revealing the sub-layer 14 which absorbs said laser beam.
  • This outer layer 13 being of a contrasting color, for example clear, with respect to the sub-layer, for example dark, the invention makes it possible to obtain a quality marking.
  • This sublayer 14 can be pigmented in dark brown or black so as to promote the absorption of the laser beam and allow contrast with the outer layer 13.
  • the pigments used can be dark brown pigments "Brown Sicopal K 2795" from the company BASF or black pigments "FA 2306" from the company FERRO, or a combination of pigments, for example based on the two pigments mentioned.
  • the minimum thickness of such a sub-layer 14 is such that it makes it possible to stop the penetration of the laser beam 10.
  • this radial thickness is of the order of 25 micrometers.
  • this thickness is of the order of 15 micrometers.
  • the pigment concentration must be between 5 and 15% with the first type of undercoat and between 30 and 35% with the second type of undercoat, so as to preserve good mechanical strength of this undercoat. -layer and to obtain sufficient coloring.
  • the outer layer 13 must be such that it allows just the necessary absorption of the laser beam to cause its own pyrolysis. It must indeed be the least absorbent possible while remaining burnable by the laser beam.
  • PTFE polytetrafluoroethylene
  • BAYER a product of the company BAYER composed of "Desmophen F951" which is a polyol and "Desmodur CT” which is a polyisocyanate, in solution for example in a mixture of cresol and xylene.
  • the pigmentation of this layer 13 can be obtained using a white pigment of titanium dioxide in all its forms, rutile or anatase for example, such as "Kronos RN59" from the company NL Chemicals.
  • This white pigment can be used alone or mixed with colored pigments in small quantities to obtain clear or pastel shades.
  • the thickness of such a layer has a maximum value depending on the type of laser used and its emission power. Indeed, this laser must be able to volatilize this layer to reveal the dark underlay 14.
  • the thickness of this layer must preferably be between 5 and 20 micrometers with an outer layer 13 of the first type. considered, and between 5 and 25 micrometers with an outer layer 13 of the second type considered.
  • This sublayer is then pigmented in the same way as sublayer 14, so that all of the polyimide and polyamide sublayers have a minimum thickness of the order of 15 micrometers.
  • varnishes used are fired according to the traditional methods used in the enameled wire industry, for example by multi-pass coating with dynamic baking in a "parade” oven obtained by the process known as "in die”, or the process known as “by dipping” ".
  • varnish deposition techniques such as for example electrophoresis, electrostatic powdering and / or in a fluidized bath.
  • the laser marking according to the invention can be carried out on a machine of the type described in US Pat. No. 4,370,542 which allows relative positioning of a cable and a laser source.
  • Such a marking can also be carried out by moving a mask in front of a wide laser beam, for example obtained from a Co2 laser (“mask” method), the laser beam being focused after having passed through said mask.
  • a mask for example obtained from a Co2 laser (“mask” method
  • FIGS. 2 and 3 represent two examples of embodiment of such cables which can be marked by laser according to the invention.
  • the marking according to the invention can also be applied to constructions of electric cables, in particular for aerospace use, with improved electrical characteristics, described in French Patent No. 2,555,799.
  • the cable according to the invention therefore allows marking which consists in burning a thin external layer, existing or added for the occasion, the gaps thus created in this layer revealing the underlying insulation. This must satisfy the electrical, mechanical, etc. clauses imposed on the cable, and in addition must be able to resist laser radiation, the power of which is adjusted to the level just necessary to burn the outer thin layer.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Insulated Conductors (AREA)

Claims (4)

  1. Lasermarkierbares elektrisches Kabel mit einer äußeren Schicht (13, 19, 23), welche die Herstellung einer solchen Markierung ermöglicht und eine Farbe aufweist, die sich von der Farbe einer Unterschicht abhebt, wobei die äußere Schicht eine dünne Schicht ist, die beim Lasermarkieren in ihrer ganzen Dicke zerstört wird und die Unterschicht (14, 21, 24) sichtbar werden läßt, dadurch gekennzeichnet, daß die äußere Schicht (13, 19, 23) aus Polytetrafluoräthylen mit einer Beigabe von 10 bis 15% an weißen Pigmenten oder aus Polyurethan mit einer Konzentration von weißen Pigmenten über 30% besteht und daß die Unterschicht (14, 21, 24) aus Polytetrafluoräthylen mit einer Beigabe von 5 bis 15% an dunklen Pigmenten, oder aus einem aromatischen Polyamid mit einer Beigabe von 30 bis 35% an dunklen Pigmenten besteht, wobei die Zerstörung der äußeren Schicht durch den Laserstrahl in ihrer ganzen Dicke und die Absorption des Strahls in der Unterschicht ermöglicht wird.
  2. Elektrisches Kabel nach Anspruch 1, dadurch gekennzeichnet, daß die äußere Schicht (13, 19, 23) eine Dicke zwischen 5 und 50 Mikrometern und die Unterschicht (14, 21, 24) eine Mindestdicke von 25 Mikrometern besitzt, sofern sie aus Polytetrafluoräthylen besteht, oder von 15 Mikrometern, sofern sie aus einem aromatischen Polyamid besteht.
  3. Elektrisches Kabel nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, daß es um den zentralen Leiter (16) herum zwei bandagierte Isolationsschichten aufweist, die rückseitig mit Klebstoff bestrichen und durch Wärmebehandlung verfestigt sind, und daß die zweite Isolationsschicht (18) mit einer dritten Schicht umkleidet ist, die aus drei aufeinanderfolgenden Lacken besteht, nämlich einem schwarzen Polyamidlack (20), der Unterschicht aus schwarzem aromatischem Polyamidlack (21) und der äußeren Schicht aus weißem Polyurethanlack (19).
  4. Elektrisches Kabel nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß es um einen zentralen Leiter herum eine erste bandagierte Isolationsschicht (17) und nachfolgend eine zweite bandagierte oder extrudierte Isolierschicht (22) mit einer Schmelztemperatur von mindestens 150°C aufweist, und daß die zweite Isolationsschicht von einer dritten Schicht aus zwei aufeinanderfolgenden Lacken umgeben ist, wobei die Unterschicht aus schwarzem Polytetrafluoräthylenlack (24) und die äußere Schicht aus weißem Polytetrafluoräthylenlack (23) besteht.
EP87111246A 1986-08-05 1987-08-04 Laser-markierbares, elektrisches Kabel Expired - Lifetime EP0256422B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8611319A FR2602904B1 (fr) 1986-08-05 1986-08-05 Cable electrique marquable par laser
FR8611319 1986-08-05

Publications (2)

Publication Number Publication Date
EP0256422A1 EP0256422A1 (de) 1988-02-24
EP0256422B1 true EP0256422B1 (de) 1991-07-10

Family

ID=9338042

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111246A Expired - Lifetime EP0256422B1 (de) 1986-08-05 1987-08-04 Laser-markierbares, elektrisches Kabel

Country Status (6)

Country Link
US (1) US4808966A (de)
EP (1) EP0256422B1 (de)
CA (1) CA1287133C (de)
DE (1) DE3771283D1 (de)
ES (1) ES2023153B3 (de)
FR (1) FR2602904B1 (de)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8726482D0 (en) * 1987-11-12 1987-12-16 Bicc Plc Marking flourocarbon surfaces
GB2215116B (en) * 1988-02-05 1992-07-29 British Aerospace A method of marking a cable or tube with a laser.
US5130721A (en) * 1989-01-09 1992-07-14 General Laser, Inc. Laser wire marking method and apparatus
FR2648270A1 (fr) * 1989-06-09 1990-12-14 Fileca Sa Cable a revetement marquable par laser
US4997994A (en) * 1989-09-01 1991-03-05 At&T Bell Laboratories Article having marking thereon and methods of making
FR2656734B1 (fr) * 1990-01-03 1992-03-20 Filotex Sa Cable electrique ou a fibres optiques marquable par plusieurs types de lasers.
US5061341A (en) * 1990-01-25 1991-10-29 Eastman Kodak Company Laser-ablating a marking in a coating on plastic articles
US4970367A (en) * 1990-02-02 1990-11-13 Miller Richard T Laser wire stripper apparatus and method therefor
US5474627A (en) * 1990-10-11 1995-12-12 Aerospatiale Societe Nationale Industrielle Method for marking an electric cable
FR2667977B1 (fr) * 1990-10-11 1992-12-31 Aerospatiale Procede et machine de marquage d'un cable electrique.
US5248878A (en) * 1991-02-25 1993-09-28 Bridgestone Corporation Golf ball marking method
DE4134271C1 (de) * 1991-10-17 1992-12-24 Leonhard Kurz Gmbh & Co, 8510 Fuerth, De
US5239158A (en) * 1992-04-15 1993-08-24 Eaton Corporation Laser marking of molded hand grips
FR2691670B1 (fr) * 1992-05-26 1994-08-26 Plastic Omnium Cie Ruban en polytétrafluoroéthylène apte au marquage par laser.
US5697390A (en) * 1993-01-29 1997-12-16 Coltec Industries Inc Process for producing filled polytetrafluoroethylene resin composite materials and products
US5501827A (en) * 1993-01-29 1996-03-26 Garlock Inc. Laser markable polytetrafluoroethylene resin material and method of making
FR2732030B1 (fr) * 1995-03-20 1997-04-30 Plastic Omnium Cie Meteriau de revetement a base de polytetrafluoroethylene apte au marquage par laser.
JPH09123606A (ja) * 1995-11-02 1997-05-13 Dainippon Printing Co Ltd レーザー印字用積層体およびその印字体
US5853955A (en) * 1995-12-11 1998-12-29 Mcdonnell Douglas Corp. Substrates and methods for laser marking same
JP3766468B2 (ja) * 1996-04-18 2006-04-12 麒麟麦酒株式会社 レーザ印字用媒体
DE19812314A1 (de) 1998-03-20 1999-09-23 Siemens Ag Ummantelung
US6370304B1 (en) 1998-09-28 2002-04-09 Corning Cable Systems Llc Radiation marking of fiber optic cable components
US6207902B1 (en) * 1999-04-01 2001-03-27 Richard J. Balaguer Electrical wiring cable with color contrast abrasion wear indicator
AU6402900A (en) * 1999-06-08 2000-12-28 Biomicro Systems, Inc. Laser ablation of doped fluorocarbon materials and applications thereof
JP4465822B2 (ja) * 2000-06-29 2010-05-26 パナソニック株式会社 マグネットワイヤの半田付方法
WO2002041325A1 (en) 2000-11-14 2002-05-23 Coltec Industrial Products Inc Abrasion-resistant polytetrafluoroethylene tape
US20030215592A1 (en) * 2002-05-14 2003-11-20 3M Innovative Properties Company Imageable multi-wall elastic sleeves
JP2008026054A (ja) * 2006-07-19 2008-02-07 Seiko Instruments Inc 識別コード表示用テープ
CN100481275C (zh) * 2007-01-24 2009-04-22 兴宁市金雁电工有限公司 C级聚氨酯漆包线的生产方法
US9818508B2 (en) 2007-11-13 2017-11-14 Southwire Company, Llc Traceable and theft deterrent reclaimable product
US10102461B2 (en) 2007-11-13 2018-10-16 Southwire Company, Llc Traceable and theft deterrent reclaimable product
US9040825B2 (en) 2007-11-13 2015-05-26 Southwire Company, Llc Conductors and metal-covered cable with coded information and method of applying coded information
US8234304B2 (en) * 2007-11-13 2012-07-31 Southwire Company Traceable and theft deterrent reclaimable product
US9053841B2 (en) 2007-11-13 2015-06-09 Southwire Company, Llc Traceable and theft deterrent reclaimable product
US7633013B2 (en) * 2008-03-24 2009-12-15 Nexans Colored foaming polymer composition
TW201037035A (en) * 2009-04-01 2010-10-16 Microcosm Technology Co Ltd Polyimide film having sheltering property and application thereof and preparation method thereof
US9800110B2 (en) * 2012-04-20 2017-10-24 Summit Esp, Llc System and method for enhanced magnet wire insulation
JP6043611B2 (ja) * 2012-12-07 2016-12-14 矢崎総業株式会社 同軸ケーブル
US10770202B1 (en) * 2013-02-21 2020-09-08 Southwire Company, Llc Striped cable and process and apparatus for making same
US10256009B2 (en) 2014-06-19 2019-04-09 Saint-Gobain Performance Plastics Corporation Laser-markable insulation material for wire or cable assemblies
US9881714B2 (en) 2014-06-19 2018-01-30 Saint-Gobain Performance Plastics Corporation Laser-markable insulation material for wire or cable assemblies
CN108780201A (zh) * 2016-02-19 2018-11-09 通用线缆技术公司 激光可标记的线缆和用于制造其的系统
CN112272852A (zh) * 2018-07-10 2021-01-26 布拉尔机电股份公司 水冷式电缆及相关的制造方法
FR3089433B1 (fr) * 2018-12-10 2021-11-05 Exel Ind Procédé de formation d’au moins un motif sur une pièce

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US3505916A (en) * 1968-05-15 1970-04-14 Adolph W Brandt Spiral striped insulator conductor and spiral striping means
GB1321540A (en) * 1970-10-08 1973-06-27 Tokyo Shibaura Electric Co Current limitting element
JPS6054727B2 (ja) * 1980-01-31 1985-12-02 株式会社デンソー 雑音防止用高圧抵抗電線
DE3162096D1 (en) * 1980-05-22 1984-03-08 Westland Plc Cable marking method and apparatus
DE3147230A1 (de) * 1981-11-28 1983-06-09 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Verfahren zum aufbringen von zeichen auf einen langgestreckten gegenstand
FR2555799B1 (fr) * 1983-11-25 1987-04-17 Filotex Sa Cable electrique, notamment pour usage aerospatial, a caracteristiques electriques ameliorees

Also Published As

Publication number Publication date
FR2602904B1 (fr) 1989-12-01
US4808966A (en) 1989-02-28
FR2602904A1 (fr) 1988-02-19
ES2023153B3 (es) 1992-01-01
EP0256422A1 (de) 1988-02-24
CA1287133C (fr) 1991-07-30
DE3771283D1 (de) 1991-08-14

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