EP1909296A2 - Verfahren zur Herstellung eines elektrischen Flachkabels mit mehreren Adern - Google Patents

Verfahren zur Herstellung eines elektrischen Flachkabels mit mehreren Adern Download PDF

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Publication number
EP1909296A2
EP1909296A2 EP07117601A EP07117601A EP1909296A2 EP 1909296 A2 EP1909296 A2 EP 1909296A2 EP 07117601 A EP07117601 A EP 07117601A EP 07117601 A EP07117601 A EP 07117601A EP 1909296 A2 EP1909296 A2 EP 1909296A2
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EP
European Patent Office
Prior art keywords
synthetic material
continuously
parallel conductors
chosen
conductors
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
EP07117601A
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English (en)
French (fr)
Other versions
EP1909296B1 (de
EP1909296A3 (de
Inventor
Gérard BISCARAS
Jean-Baptiste Girardot
Loïc Didier
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.)
Axon Cable SA
Original Assignee
Axon Cable 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 Axon Cable SA filed Critical Axon Cable SA
Publication of EP1909296A2 publication Critical patent/EP1909296A2/de
Publication of EP1909296A3 publication Critical patent/EP1909296A3/de
Application granted granted Critical
Publication of EP1909296B1 publication Critical patent/EP1909296B1/de
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Classifications

    • 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
    • H01B7/08—Flat or ribbon cables
    • H01B7/0838—Parallel wires, sandwiched between two insulating layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
    • H01B1/12—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances organic substances
    • H01B1/124—Intrinsically conductive polymers
    • H01B1/127—Intrinsically conductive polymers comprising five-membered aromatic rings in the main chain, e.g. polypyrroles, polythiophenes

Definitions

  • the invention relates to a method of manufacturing a flat electrical cable in which a plurality of conductors are kept parallel and isolated from each other in a coating of synthetic material. It relates more particularly to improvement to improve the dielectric and mechanical performance of the insulation.
  • Flat cables are more and more in demand in the industry. Indeed, with such a technique where drivers are placed at exactly identical distances, we can consider a certain level of automation of the wiring.
  • a flat cable consists of parallel flat conductors embedded in an insulating material, the assembly forming a flexible band. They are generally obtained either from round wires which are then crushed by rolling or from copper strips which are then cut to the width of the desired conductors.
  • Known methods for making such a flat electrical cable are rolling and extruding.
  • the conductors are scrolled parallel in their own longitudinal direction and the two faces of the sheet of conductors are covered by two films on which a layer of heat-reactive adhesive has been deposited.
  • the glue is reactivated at the time of rolling so that the threads are kept spaced from each other and trapped between the two films.
  • a single wire can be used that is folded on itself by trapping the conductors.
  • the extrusion consists of circulating a sheet of parallel conductors spaced from each other and extruding an insulating material on either side of this sheet, in order to coat the conductors.
  • two films can be extruded which are then pressed and then cooled between two rolls.
  • the invention aims to achieve the level of quality required by the standards in force while performing all stages of continuous manufacture.
  • the invention relates to a method for manufacturing a flat electrical cable with parallel conductors, characterized in that a protective film is coextruded comprising at least one layer of a first synthetic material chosen for its mechanical strength and the least one layer of a second synthetic material chosen for its dielectric performance and in that one laminates against one another two strips of such a film while having said parallel conductors between them.
  • a binder is interposed between said first and second layers during coextrusion. This binder is chosen to reinforce the cohesive forces between these two layers.
  • said two strips are laminated by applying against one another the faces of the same synthetic material. It is preferably said second synthetic material chosen for its dielectric performance.
  • two strips of said protective film are coextruded simultaneously and continuously, they are converged on either side of said parallel conductors running continuously in their own longitudinal direction and the above-mentioned rolling operation is carried out.
  • a single strip of said protective film is continuously coextruded, it is folded longitudinally on itself while making it converge on either side of said parallel conductors running continuously in their own longitudinal direction and proceed to the aforementioned rolling operation.
  • a single strip of said protective film is continuously coextruded, the sides of the latter are folded longitudinally over its central part so as to grip on both sides said parallel conductors running continuously in their own direction. longitudinal and the above-mentioned rolling operation is carried out.
  • This embodiment has the advantage that the material chosen for its mechanical strength protects the cable thus produced on all sides.
  • said first synthetic material may be chosen from the family of polyamides, for example polyamides 11 or 12.
  • polysulfonated products fluorinated polymers, polyarylates, polyetherimides, polyesters and their derivatives, ketone-based polymers, etc. may be used.
  • said second synthetic material may be selected from the group of polyolefins.
  • Polypropylene will commonly be used.
  • certain polyamides in particular polyamides 6, for example 7, certain thermoplastic elastomers, polyesters and their derivatives, polyoxyphenylenes or other alloys of polymers such as an alloy of polyamide and polypropylene or an alloy of polyurethane and PVC.
  • a maleic anhydride graft polymer or other polar polymer modifier may be used as a binder.
  • Another advantageous feature of the invention is that it makes it possible to obtain a flat cable during a process using no solvent.
  • one or both of the abovementioned synthetic materials may be loaded with a flame retardant product.
  • the or each aforementioned band is cooled for calibration between coextrusion and rolling.
  • the strips can be reheated through the rollers.
  • the two coextruded strips are joined and cooled by the passage between two cold rolling rolls.
  • the outer layer is chosen to withstand the temperatures of the rolling rolls while the inner layer is chosen to have a softening point lower than that of the outer layer and consequently allow an assembly around the conductors by interpenetration of the inner layers between they at the time of passage between the rolling rolls.
  • Each group of extruders is arranged to carry out the continuous coextrusion of three materials, namely a first synthetic material 20 chosen for its mechanical strength, a second synthetic material 21 chosen for its dielectric performance and a binder 22.
  • the extrusion head 25 is arranged to form a protective film 27 comprising a layer 20a of the first synthetic material 20 and a layer 21a of the second synthetic material 21 applied against each other and joined in particular thanks to the binder 22 which is interposed between these two layers during coextrusion.
  • This binder is chosen in particular to reinforce the cohesion between the two layers.
  • a film in the form of a strip 27 is thus obtained, the two visible faces of which are materialized by different materials.
  • facing faces are those which comprise said second synthetic material 21 chosen for its dielectric performance, for example a polyolefin.
  • the faces of the two strips 27 located outside are therefore those of said first synthetic material, which may be a polyamide, for example a polyamide 11 or 12.
  • drive means After the double coextrusion of the two strips, drive means cause them to converge, as well as the layer of conductors 11, to a hot rolling station.
  • FIG. 2 shows the relative positions of the two strips 27 and the layer of conductors downstream of the two extruders while FIG. 3 shows the result obtained downstream of the rolling station 17.
  • the hot rolling makes it possible to join the two layers of said second synthetic material 21, in a single thickness covering all of the conductors, as can be seen in Figure 3.
  • the flat electrical cable 18 is then formed.
  • the polyamide chosen makes it possible to improve the mechanical strength while the polyolefin chosen makes it possible to improve the dielectric performance as well as the resistance to moisture and to hydrolysis.
  • This second material may be, for example, polypropylene.
  • the coating of the layer of conductors is thus obtained by remelting the polypropylene at the time of rolling.
  • the binder may be a product known as "OREVAC”.
  • At least one of the abovementioned synthetic materials may be loaded with a flame retardant product.
  • FIG. 6 shows a variant of the embodiment illustrated by FIGS. 4 and 5.
  • a band 27B identical to the band 27A presented previously and continuously extruded is used.
  • both sides 271 and 272 of said strip 27B are folded over the central portion 270 thereof.
  • both sides may correspond to the first and fourth quarter of the strip.
  • Other folding positions can be retained so as to laterally offset the position of the joint, depending on the positions provided for the conductors.
  • the ends of the folded sides 271, 272 of the strip are joined together, as shown in dashed lines in FIG. 6, in order to ensure the maintenance of the mechanical and dielectric strength properties of the strip. cable including in the central part of it.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Insulated Conductors (AREA)
EP07117601.0A 2006-10-02 2007-10-01 Verfahren zur Herstellung eines elektrischen Flachkabels mit mehreren Adern Active EP1909296B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0654040A FR2906639B1 (fr) 2006-10-02 2006-10-02 Procede de fabrication d'un cable electrique plat a plusieurs conducteurs.

Publications (3)

Publication Number Publication Date
EP1909296A2 true EP1909296A2 (de) 2008-04-09
EP1909296A3 EP1909296A3 (de) 2014-04-30
EP1909296B1 EP1909296B1 (de) 2015-07-01

Family

ID=37909296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07117601.0A Active EP1909296B1 (de) 2006-10-02 2007-10-01 Verfahren zur Herstellung eines elektrischen Flachkabels mit mehreren Adern

Country Status (2)

Country Link
EP (1) EP1909296B1 (de)
FR (1) FR2906639B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113130144A (zh) * 2021-04-27 2021-07-16 广东亿讯电子有限公司 扁平线制造装置以及其制造方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4783579A (en) * 1986-04-29 1988-11-08 Amp Incorporated Flat multi-conductor power cable with two insulating layers
DE10103367C2 (de) * 2000-11-20 2002-10-24 Reifenhaeuser Masch Verfahren zum Herstellen von Flachbandkabeln

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113130144A (zh) * 2021-04-27 2021-07-16 广东亿讯电子有限公司 扁平线制造装置以及其制造方法
CN113130144B (zh) * 2021-04-27 2025-07-01 广东亿讯电子有限公司 扁平线制造装置以及其制造方法

Also Published As

Publication number Publication date
FR2906639A1 (fr) 2008-04-04
EP1909296B1 (de) 2015-07-01
EP1909296A3 (de) 2014-04-30
FR2906639B1 (fr) 2009-01-09

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