EP1605474B1 - Kabel mit mehreren isolierten Leitern in einem Mantel und Herstellungsverfahren des Kabels. - Google Patents

Kabel mit mehreren isolierten Leitern in einem Mantel und Herstellungsverfahren des Kabels. Download PDF

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Publication number
EP1605474B1
EP1605474B1 EP05300448.7A EP05300448A EP1605474B1 EP 1605474 B1 EP1605474 B1 EP 1605474B1 EP 05300448 A EP05300448 A EP 05300448A EP 1605474 B1 EP1605474 B1 EP 1605474B1
Authority
EP
European Patent Office
Prior art keywords
cable
jacket
skin
insulating element
sheath
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.)
Not-in-force
Application number
EP05300448.7A
Other languages
English (en)
French (fr)
Other versions
EP1605474A3 (de
EP1605474A2 (de
Inventor
Christèle KENSICHER
Patrick Odot
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.)
Nexans SA
Original Assignee
Nexans 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 Nexans SA filed Critical Nexans SA
Publication of EP1605474A2 publication Critical patent/EP1605474A2/de
Publication of EP1605474A3 publication Critical patent/EP1605474A3/de
Application granted granted Critical
Publication of EP1605474B1 publication Critical patent/EP1605474B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01B7/02—Disposition of insulation
    • H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation
    • 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
    • H01B7/0208—Cables with several layers of insulating 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
    • H01B7/38—Insulated conductors or cables characterised by their form with arrangements for facilitating removal of insulation

Definitions

  • the present invention relates to a cable composed of a plurality of insulated conductors extending within the same protective sheath.
  • the invention also relates to a method of manufacturing such a cable.
  • the invention finds a particularly advantageous, but not exclusive, application in the field of energy and / or telecommunication cables.
  • an insulated conductor very generally designates any electrically conductive element covered with an electrically insulating element. It is furthermore understood that the conductive element and / or the insulating element may have a simple or composite structure. Thus, the conductive element may consist of several independent electrical conductors or not, and that the insulating element may be composed of a plurality of superimposed insulating layers.
  • a known solution to solve this gluing problem consists in covering the outer surface of each insulated conductor with talc, prior to the extrusion of the sheath. But this operation is impractical to implement, mainly because of the powderiness of talc that makes handling difficult and inevitably messy. In the end, it penalizes the productivity of the entire cable manufacturing chain.
  • the application of this non-stick material also requires the use of specific equipment, which also has the effect of negatively impacting the cost price of the cable.
  • EP-1 176 612 which describes an electrical cable with a bilayer insulation whose thickness ratio of the inner layer to the outer layer is between 50:50 and 70:30.
  • the technical problem to be solved, by the object of the present invention is to propose a cable comprising at least two insulated conductors grouped within the same sheath, each insulated conductor comprising a conductive element extending inside. an insulating element, cable that would avoid the problems of the prior art by being substantially less expensive to manufacture, while remaining easy to strip.
  • skin here designates an extremely thin layer which individually wraps an isolated conductor and which strongly adheres to the outer surface of the corresponding insulating element, the surface with which said layer cooperates by close contact. But in addition, this skin here advantageously has the property of not adhering to the inner surface of the sheath. The latter can therefore be stripped very easily, without furthermore that the integrity of the insulated conductors can not be altered.
  • the invention as thus defined has the advantage of being significantly easier to implement than the solutions of the prior art, since it only requires conventional cable manufacturing equipment, in this case extrusion equipment.
  • the solution of interposing a skin must thus allow a productivity gain of the order of 10%, while ensuring non-adhesion between the sheath and the individual insulated conductors.
  • the present invention also relates to the features which will emerge during the following description, which should be considered in isolation or in all their possible technical combinations.
  • each insulated conductor 2 is constituted by a conductive element 4 of copper extending inside an insulating element 5 made of polymer.
  • each insulated conductor 2 is also covered with a skin 6 which is integral with its insulating element 5 and which is non-adherent with respect to the sheath 3.
  • each skin 6 has a thickness of 0.05 to 0, 2 mm.
  • the skin 6 here has no other function than to form an interface between each insulated conductor 2 and the sheath 3. This explains why its thickness is so low compared to that of each insulating element 5 and / or to that sheath 3 which are rather of the order of a millimeter.
  • each skin 6 is here based on polypropylene.
  • this plastic material has the advantage of having significant anti-adhesive properties vis-à-vis most materials that are commonly used to form ducts 3 in the field of cable.
  • the melting temperature of the polypropylene is higher than the temperature of use of the sheath materials in question, there is no risk of sticking during the formation of the sheath 3.
  • the skin 6 will advantageously be formed at the same time as the corresponding insulating element 5; the joining then taking place by surface interpenetration of the two types of materials.
  • each insulating element 5 is also based on at least one crosslinked polyolefin, and the sheath 3 is based on at least one filled polyolefin.
  • each insulating element 5 is made from a composition comprising at least one polyolefin of which at least one is crosslinkable.
  • the sheath 3 is made from a polyolefin type matrix in which is dispersed an organic charge, independently of the function of the latter.
  • each insulating element 5 is here based on crosslinked polyethylene.
  • the sheath 3 is based on a mixture of ethyl vinyl acetate and polyethylene.
  • each skin 6 can also be made from a mixture of polypropylene and polyvinyl chloride.
  • the proportion of polypropylene with respect to the polyvinyl chloride may advantageously vary from 5 to 30% in the mixture comprising the skin 6.
  • each insulating element 5 is then based on at least one halogenated polymer, while the sheath 3 is based on at least one charged halogenated polymer.
  • each insulating element 5 is based on polyvinyl chloride.
  • the sheath 3 is based on filled polyvinyl chloride.
  • polypropylene and polyvinyl chloride are a priori not compatible, in that there can be theoretically adhesion between these two types of plastic materials, including interpenetration in the molten state .
  • a skin 6 made of a mixture of polypropylene and polyvinyl chloride as previously defined is advantageously able to adhere to an insulating member 5 polyvinyl chloride if the materials in question are both brought into contact in the molten state.
  • the composition of the sheath 3 is loaded with chalk. This characteristic is essentially intended to lower the cost price of the sheath 3.
  • composition of the sheath 3 may further advantageously comprise a plasticizer.
  • the invention also relates to a method of manufacturing a cable 1 comprising at least two insulated conductors 2 grouped together in the same sheath 3, each insulated conductor 2 comprising a conductive element 4 extending inside a insulating element 5.
  • the cable according to the invention can thus be produced with conventional extrusion equipment, which proves to be particularly advantageous in terms of manufacturing cost, compared to the processes of the state of the art which requires expensive specific equipment.
  • the extrusion of each skin 6 is carried out simultaneously with the extrusion of the corresponding insulating element 5.

Landscapes

  • Insulated Conductors (AREA)
  • Manufacturing Of Electric Cables (AREA)

Claims (14)

  1. Kabel (1), umfassend mindestens zwei isolierte Leiter (2), die in einem gleichen Mantel (3) angeordnet sind, wobei jeder isolierte Leiter (2) ein leitendes Element (4) umfasst, das sich im Inneren eines isolierenden Elements (5) erstreckt, jeder isolierte Leiter (2) mit einer Umhüllung (6) bedeckt ist, die eine geringere Dicke als diejenige jedes isolierenden Elements (5) und/oder diejenige des Mantels (3) aufweist, dadurch gekennzeichnet, dass die Umhüllung (6) mit dem isolierenden Element (5) einstückig und gegenüber dem Mantel (3) nicht haftend ist und eine Dicke von 0,05 bis 0,2 mm aufweist.
  2. Kabel (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Fusionstemperatur der Umhüllung (6) höher als die Temperatur der Durchführung des Mantels (3) ist.
  3. Kabel (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass jede Umhüllung (6) auf Polypropylen basiert.
  4. Kabel (1) nach einem beliebigen der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass jedes isolierende Element (5) mindestens auf einem vernetzten Polyolefin basiert, und dadurch, dass der Mantel (3) auf mindestens einem geladenen Polyolefin basiert.
  5. Kabel (1) nach Anspruch 4, dadurch gekennzeichnet, dass jedes isolierende Element (5) auf vernetztem Polyethylen basiert.
  6. Kabel (1) nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass der Mantel (3) auf einer Mischung aus Ethylvinylacetat und Polyethylen basiert.
  7. Kabel (1) nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jede Umhüllung (6) auf einer Mischung aus Polypropylen und Polyvinylchlorid basiert.
  8. Kabel (1) nach Anspruch 7, dadurch gekennzeichnet, dass die Proportion von Polypropylen in der Mischung, aus der die Umhüllung (6) besteht, von 5 bis 30 % beträgt.
  9. Kabel (1) nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, dass jedes isolierende Element (5) auf mindestens einem halogenierten Polymer basiert, und dadurch, dass der Mantel (3) auf mindestens einem geladenen halogenierten Polymer basiert.
  10. Kabel (1) nach Anspruch 9, dadurch gekennzeichnet, dass jedes isolierende Element (5) auf Vinylpolychlorid basiert.
  11. Kabel (1) nach einem der Ansprüche 9 oder 10, dadurch gekennzeichnet, dass der Mantel (3) auf geladenem Vinylpolychlorid basiert.
  12. Kabel (1) nach einem beliebigen der Ansprüche 9 bis 11, dadurch gekennzeichnet, dass die Zusammensetzung des Mantels (3) mit Kreide geladen ist.
  13. Verfahren zur Herstellung eines Kabels (1), umfassend mindestens zwei isolierte Leiter (2), die innerhalb eines gleichen Mantels (3) angeordnet sind, wobei jeder isolierte Leiter (2) ein leitendes Element (4) umfasst, das sich im Inneren eines isolierenden Elements (5) erstreckt, dadurch gekennzeichnet, dass das Verfahren die Schritte umfasst, bestehend aus:
    - Extrudieren des isolierenden Elements (5) um jedes leitende Element (4) herum, um jeden isolierten Leiter (2) zu bilden,
    - Extrudieren um jeden isolierten Leiter (2) herum einer Umhüllung (6), die eine geringere Dicke als diejenige jedes isolierenden Elements (5) und/oder diejenige des Mantels (3) aufweist, und die mit dem entsprechenden isolierenden Element (5) einstückig und gegenüber dem Mantel (3) nicht haftend ist, wobei die Umhüllung (6) eine Dicke von 0,05 bis 0,2 mm aufweist,
    - Extrudieren der Umhüllung (3) um die Gesamtheit der isolierten Leiter (2) herum, die zuvor in ein Bündel gesammelt wurden.
  14. Verfahren zur Herstellung nach Anspruch 13, dadurch gekennzeichnet, dass, die Extrusion jeder Umhüllung (6) gleichzeitig mit der Extrusion des entsprechenden isolierenden Elements (5) durchgeführt wird.
EP05300448.7A 2004-06-07 2005-06-02 Kabel mit mehreren isolierten Leitern in einem Mantel und Herstellungsverfahren des Kabels. Not-in-force EP1605474B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0406090 2004-06-07
FR0406090A FR2871285B1 (fr) 2004-06-07 2004-06-07 Cable comportant plusieurs conducteurs isoles enveloppes dans une meme gaine et procede de fabrication d'un tel cable

Publications (3)

Publication Number Publication Date
EP1605474A2 EP1605474A2 (de) 2005-12-14
EP1605474A3 EP1605474A3 (de) 2006-02-22
EP1605474B1 true EP1605474B1 (de) 2018-03-14

Family

ID=34942639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05300448.7A Not-in-force EP1605474B1 (de) 2004-06-07 2005-06-02 Kabel mit mehreren isolierten Leitern in einem Mantel und Herstellungsverfahren des Kabels.

Country Status (6)

Country Link
US (1) US7586044B2 (de)
EP (1) EP1605474B1 (de)
CA (1) CA2508499A1 (de)
ES (1) ES2673175T3 (de)
FR (1) FR2871285B1 (de)
NO (1) NO20052667L (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2933228A1 (fr) * 2008-06-26 2010-01-01 Nexans Couche tubante electriquement isolante pour cable electrique
US20140051927A1 (en) * 2012-08-20 2014-02-20 Boston Scientific Scimed, Inc. Electronic cable assemblies for use with medical devices
CN104282363A (zh) * 2013-07-08 2015-01-14 沈阳岳阳电缆有限公司 高强度移动型电缆
CN103854741A (zh) * 2014-02-24 2014-06-11 安徽卓越电缆有限公司 一种直流牵引补偿电缆

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59117549A (ja) * 1982-12-23 1984-07-06 Sumitomo Electric Ind Ltd 難燃、低煙ポリオレフイン樹脂組成物
GB2161644B (en) * 1984-07-09 1987-11-11 Pirelli General Plc Flexible electric cable
DE3860769D1 (de) * 1987-03-13 1990-11-15 Lambertus Adrianus Van D Groep Polymer-zusammensetzung, verfahren zu deren herstellung und deren anwendung.
FR2764104B1 (fr) * 1997-06-02 1999-07-30 Alsthom Cge Alcatel Cable de transmission de donnees a hautes frequences, et procede et appareil pour sa fabrication
US6392153B1 (en) * 1998-12-18 2002-05-21 Equistar Chemicals, Lp Electrical conductive assembly
DE10036610A1 (de) * 2000-07-27 2002-02-07 Alcatel Sa Flexible elektrische Leitung für Schleppketten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
FR2871285A1 (fr) 2005-12-09
EP1605474A3 (de) 2006-02-22
ES2673175T3 (es) 2018-06-20
US7586044B2 (en) 2009-09-08
US20050274539A1 (en) 2005-12-15
FR2871285B1 (fr) 2006-09-08
NO20052667L (no) 2005-12-05
NO20052667D0 (no) 2005-06-03
EP1605474A2 (de) 2005-12-14
CA2508499A1 (en) 2005-12-04

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