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EP1176613B1 - Cable having at least one transmission element - Google Patents

Cable having at least one transmission element Download PDF

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Publication number
EP1176613B1
EP1176613B1 EP01401875A EP01401875A EP1176613B1 EP 1176613 B1 EP1176613 B1 EP 1176613B1 EP 01401875 A EP01401875 A EP 01401875A EP 01401875 A EP01401875 A EP 01401875A EP 1176613 B1 EP1176613 B1 EP 1176613B1
Authority
EP
European Patent Office
Prior art keywords
line
inner layer
layer
jacket
wires
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
EP01401875A
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German (de)
French (fr)
Other versions
EP1176613A2 (en
EP1176613A3 (en
Inventor
Ferdinand Ing. Grögl
Alfred Dipl.-Ing. Mehl
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
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Publication of EP1176613A2 publication Critical patent/EP1176613A2/en
Publication of EP1176613A3 publication Critical patent/EP1176613A3/en
Application granted granted Critical
Publication of EP1176613B1 publication Critical patent/EP1176613B1/en
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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
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/1875—Multi-layer sheaths
    • H01B7/188—Inter-layer adherence promoting means
    • 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
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/187—Sheaths comprising extruded non-metallic layers

Definitions

  • the invention relates to a line according to the preamble of claim 1 ( DE 298 08 657 U1 ).
  • Lines to which the invention relates are used, for example, in industrial automation as flexible power supply lines, as combined lines with power and control wires and as control lines.
  • Transport element may thus be an energy source or a control or signal wire, which may be suitable for transmitting electrical or optical signals.
  • Essential in these lines is the outer jacket which must cope with all possible mechanical, thermal and chemical stresses.
  • Corresponding materials are known. It is predominantly thermoplastic elastomers (TPE), polyurethane (PU) or polyvinyl chloride (PVC) used.
  • TPE thermoplastic elastomers
  • PU polyurethane
  • PVC polyvinyl chloride
  • the jacket consists for example of a polymer mixture based on chlorinated polyethylene (CPE), chlorosulfonated polyethylene (CSM), polychloroprene (CR) or rubber (NR). Over the jacket, a thin layer of urethane-based material is attached to improve the abrasion resistance of the cable. This layer can be glued to the jacket.
  • CPE chlorinated polyethylene
  • CSM chlorosulfonated polyethylene
  • CR polychloroprene
  • NR rubber
  • the well-known line after the above-mentioned DE 298 08 657 U1 can meet such demands. It consists of two provided with differently colored insulation electrical wires that are adjacent to each other surrounded by a designated as separation layer wrapping.
  • Above the separating layer is an inner casing made of polyvinyl chloride produced by extrusion, which has a dimensionally accurate, cylindrical outer surface.
  • the inner shell is made of a braid of tinned copper wires surround.
  • an outer jacket made of polyvinyl chloride is provided.
  • the sheath of this line can be easily cut with a special tool with a knife that penetrates into working position exactly to the separating layer in the shell structure. The production of the line is very expensive.
  • the invention has for its object to make the line initially described so that it can be easily stripped with a simple structure and without risk of injury to the head.
  • This line is easy to produce and without special dimensional accuracy. It can be manufactured with common machines in one operation, including the two layers for the coat.
  • the cable has an outwardly acting jacket with the desired or prescribed properties. However, it can be removed because of its special inner layer, for example, for connection purposes in a simple manner and without risk of injury to the leader of this. For this purpose, only the outer layer of the shell needs to be completely severed. A slight scoring of the inner layer does not interfere, but it may even be beneficial. The jacket can then be demolished at the separation point.
  • the cable is therefore particularly suitable for semi-automatic or fully automatic packaging.
  • the transmission element of the line according to the invention can - as already mentioned above - be an energy source, an electrical control wire or an optical control wire.
  • an energy source for the sake of simplicity, only the word "vein” will be used in the following. It covers the three specified variants.
  • the line L shown in FIG. 1 consists of an electrical conductor 1, which is surrounded by a jacket M of insulating material.
  • the jacket M here is thus at the same time the insulation of the conductor 1.
  • Such a line L has in a preferred embodiment, a larger conductor cross-section of, for example 25 mm second But it can also be a vein of a multi-core line.
  • This also applies in principle to a line L according to FIG. 2, in which the conductor 1 is initially provided with an insulation 2 to which the jacket M is applied.
  • the material for the insulation for example, polypropylene is used.
  • the jacket M is made up of an inner layer 3 and an outer layer 4.
  • the two layers 3 and 4 are firmly connected. They preferably consist of the same base material, such as a TPE, but have different properties due to the addition of additives to the material of the inner layer 3.
  • the layers 3 and 4 can be applied in a preferred embodiment in the same operation on the conductor 1, for example by extrusion in tandem or by co-extrusion. They then connect directly to each other directly.
  • the jacket M is not hatched in the drawings. Its two-layer structure is marked in each case by a dashed line.
  • the inner layer 3 of the jacket M has compared to the outer layer 4 both a significantly lower tensile strength and a significantly lower elongation at break.
  • additives to the respective base material which have a strength and elongation-reducing effect in the extrudate. They may be, for example, polyolefins and chemically foamable additives.
  • fillers or regenerated materials can also be used as additives which, in addition to the desired reduced strength and elongation values, also lead to a reduced calorific value and thus to a flame-retarding effect of the extruded inner layer 3.
  • the two layers 3 and 4 should be about the same thickness. Their thickness ratio may in practice be about 60:40 to 40:60, the 60 being for the outer layer 4. This ensures that both the mechanical and the chemical resistance of the shell M meet the demands.
  • the tear strength of the inner layer 3 is about half as large as that of the outer layer 4. It is for example 20 N / mm 2 . Its elongation at break is smaller than that of the outer layer 4 by a factor of "3". For example, it is about 150% compared with 500% of the outer layer 4.
  • the base material used is the TPE polyether urethane, which is mixed with the same amount of a polyolefin elastomer.
  • the mixture consists of 40% polyether urethane (TPE) as the base material and 30% of a polyolefin elastomer and 30% calcium carbonate as additives.
  • TPE polyether urethane
  • the mixture consists of 50% polyether urethane (TPE) as base material as well as 20% of a polyolefin, 29% calcium carbonate and 1% of a blowing agent as additives.
  • TPE polyether urethane
  • the electrical line L shown in section in FIG. 3 has three wires A stranded together.
  • the wires A consist of the conductor 1 and the same surrounding it Insulation 2. You are here surrounded by the mantle M together.
  • the conductors 1 are preferably flexible, made of copper wires electrical stranded wire.
  • the line L is shown with three wires A. It can also be two or more than three wires A. Each wire A can have a different structure than the other wires. This applies, for example, if both energy wires and control wires are present in a line L.
  • the gussets between the wires can be filled to produce an approximately circular peripheral surface of the "soul" of the line L with filler material or by the material of the surrounding the wires A shell M.
  • an electrical screen 5 designed as a braid or roping is attached over the insulated conductor 1 or the cores A, respectively.
  • a separating layer 6 is laid around the screen 5, by means of which penetration of the material of the inner layer 3 of the jacket M into the same is prevented. This is necessary for the simple stripping of the L line.
  • the separating layer 6 is preferably made of a material that adheres to the inner layer 3 of the shell M.
  • filling elements 7 are arranged in the interstices between the wires.
  • a winding 8 is suitably applied via cores A and filling elements 7, which serves as a support for the screen 5.
  • the winding 8 may consist of a non-woven fabric, such as a polyester fleece.

Landscapes

  • Insulated Conductors (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Liquid Crystal (AREA)
  • Flexible Shafts (AREA)

Abstract

The sheath (M) comprises inner- (3) and outer- (4) layers bonded together. The figures for tear resistance and extension-on-tearing of the inner layer (3) are markedly less than those of the outer layer.

Description

Die Erfindung betrifft eine Leitung gemäß dem Oberbegriff des Patentanspruchs 1 ( DE 298 08 657 U1 ).The invention relates to a line according to the preamble of claim 1 ( DE 298 08 657 U1 ).

Leitungen, auf welche sich die Erfindung bezieht, werden beispielsweise in der Industrieautomation als flexible Energiezuführungsleitungen, als kombinierte Leitungen mit Energie- und Steueradern sowie als Steuerleitungen eingesetzt. Ein anderes mögliches Anwendungsgebiet ist die Kraftfahrzeugtechnik. "Übertragungselement" kann also eine Energieader oder eine Steuer- bzw. Signalader sein, die zur Übertragung elektrischer oder optischer Signale geeignet sein kann. Von wesentlicher Bedeutung bei diesen Leitungen ist der äußere Mantel, der allen möglichen mechanischen, thermischen und chemischen Beanspruchungen gewachsen sein muß. Entsprechende Materialien sind bekannt. Es werden überwiegend thermoplastische Elastomere (TPE), Polyurethan (PU) oder Polyvinylchlorid (PVC) eingesetzt. Diese Leitungen sollen außerdem für Verbindungszwecke, beispielsweise zum Anschließen von Steckern, möglichst einfach abzumanteln sein.Lines to which the invention relates are used, for example, in industrial automation as flexible power supply lines, as combined lines with power and control wires and as control lines. Another possible application is automotive engineering. "Transmission element" may thus be an energy source or a control or signal wire, which may be suitable for transmitting electrical or optical signals. Essential in these lines is the outer jacket which must cope with all possible mechanical, thermal and chemical stresses. Corresponding materials are known. It is predominantly thermoplastic elastomers (TPE), polyurethane (PU) or polyvinyl chloride (PVC) used. These cables should also be as simple as possible abzuzumanteln for connection purposes, for example, for connecting plugs.

Aus der WO-A-00/30126 geht ein Minenkabel mit drei isolierten elektrischen Leitern hervor, die von einem gemeinsamen Mantel aus Isoliermaterial umgeben sind. Der Mantel besteht beispielsweise aus einer Polymermischung auf Basis von chloriertem Polyethylen (CPE), chlorsulfoniertem Polyethylen (CSM), Polychloropren (CR) oder Gummi (NR). Über dem Mantel ist zur Verbesserung der Abriebfestigkeit des Kabels eine dünne Schicht aus einem Material auf Urethan-Basis angebracht. Diese Schicht kann mit dem Mantel verklebt sein.From the WO-A-00/30126 A mine cable with three insulated electrical conductors emerges, which are surrounded by a common sheath of insulating material. The jacket consists for example of a polymer mixture based on chlorinated polyethylene (CPE), chlorosulfonated polyethylene (CSM), polychloroprene (CR) or rubber (NR). Over the jacket, a thin layer of urethane-based material is attached to improve the abrasion resistance of the cable. This layer can be glued to the jacket.

Die bekannte Leitung nach dem eingangs erwähnten DE 298 08 657 U1 kann solche Forderungen erfüllen. Sie besteht aus zwei mit unterschiedlich gefärbter Isolierung versehenen elektrischen Adern, die nebeneinander liegend von einer als Trennschicht bezeichneten Umwicklung umgeben sind. Über der Trennschicht liegt ein durch Extrusion erzeugter Innenmantel aus Polyvinylchlorid, der eine maßgenaue, zylindrische äußere Oberfläche hat. Der Innenmantel ist von einem Geflecht aus verzinnten Kupferdrähten umgeben. Als mechanischer Schutz ist ein äußerer Mantel aus Polyvinylchlorid vorgesehen. Der Mantel dieser Leitung kann mit einem Spezialwerkzeug mit einem Messer, das in Arbeitsposition exakt bis zur Trennschicht in den Mantelaufbau eindringt, leicht durchtrennt werden. Die Herstellung der Leitung ist jedoch sehr aufwendig.The well-known line after the above-mentioned DE 298 08 657 U1 can meet such demands. It consists of two provided with differently colored insulation electrical wires that are adjacent to each other surrounded by a designated as separation layer wrapping. Above the separating layer is an inner casing made of polyvinyl chloride produced by extrusion, which has a dimensionally accurate, cylindrical outer surface. The inner shell is made of a braid of tinned copper wires surround. As a mechanical protection, an outer jacket made of polyvinyl chloride is provided. The sheath of this line can be easily cut with a special tool with a knife that penetrates into working position exactly to the separating layer in the shell structure. The production of the line is very expensive.

Der Erfindung liegt die Aufgabe zugrunde, die eingangs geschilderte Leitung so zu gestalten, daß sie bei einfachem Aufbau einfach und ohne Verletzungsgefahr für den Leiter abgemantelt werden kann.The invention has for its object to make the line initially described so that it can be easily stripped with a simple structure and without risk of injury to the head.

Diese Aufgabe wird entsprechend den kennzeichnenden Merkmalen des Patentanspruchs 1 gelöst.This object is achieved according to the characterizing features of claim 1.

Diese Leitung ist einfach und ohne besondere Maßgenauigkeit herstellbar. Sie kann mit üblichen Maschinen in einem Arbeitsgang gefertigt werden, einschließlich der beiden Schichten für den Mantel. Die Leitung hat einen nach außen wirkenden Mantel mit den gewünschten bzw. vorgeschriebenen Eigenschaften. Er kann aber wegen seiner speziellen inneren Schicht beispielsweise für Verbindungszwecke auf einfache Weise und ohne Verletzungsgefahr für den Leiter von diesem entfernt werden. Dazu braucht nur die äußere Schicht des Mantels vollständig durchtrennt zu werden. Ein geringfügiges Einritzen der inneren Schicht stört dabei nicht, sondern es kann sogar von Vorteil sein. Der Mantel kann dann an der Trennstelle abgerissen werden. Die Leitung ist dadurch besonders für eine halb- oder vollautomatische Konfektionierung geeignet.This line is easy to produce and without special dimensional accuracy. It can be manufactured with common machines in one operation, including the two layers for the coat. The cable has an outwardly acting jacket with the desired or prescribed properties. However, it can be removed because of its special inner layer, for example, for connection purposes in a simple manner and without risk of injury to the leader of this. For this purpose, only the outer layer of the shell needs to be completely severed. A slight scoring of the inner layer does not interfere, but it may even be beneficial. The jacket can then be demolished at the separation point. The cable is therefore particularly suitable for semi-automatic or fully automatic packaging.

Ausführungsbeispiele des Erfindungsgegenstandes sind in den Zeichnungen dargestellt.Embodiments of the subject invention are illustrated in the drawings.

Es zeigen:

  • Fig. 1 bis 3 Querschnitte durch unterschiedlich aufgebaute Leitungen nach der Erfindung.
  • Fig. 4 eine Seitenansicht der Leitung nach Fig. 3 mit am Ende entfernten Mantel.
  • Fig. 5 und 6 Querschnitte der Leitung in zwei weiter ergänzten Ausführungsformen.
Show it:
  • Fig. 1 to 3 cross sections through differently constructed lines according to the invention.
  • Fig. 4 is a side view of the line of FIG. 3 with the jacket removed at the end.
  • Fig. 5 and 6 are cross-sections of the conduit in two further supplemented embodiments.

Das Übertragungselement der Leitung nach der Erfindung kann - wie bereits weiter oben erwähnt - eine Energieader, eine elektrische Steuerader oder eine optische Steuerader sein. Der Einfachheit halber wird im folgenden nur das Wort "Ader" benutzt. Es deckt die drei angegebenen Varianten ab.The transmission element of the line according to the invention can - as already mentioned above - be an energy source, an electrical control wire or an optical control wire. For the sake of simplicity, only the word "vein" will be used in the following. It covers the three specified variants.

In der einfachsten Ausführungsform besteht die Leitung L gemäß Fig. 1 aus einem elektrischen Leiter 1, der von einem Mantel M aus Isoliermaterial umgeben ist. Der Mantel M ist hier also gleichzeitig die Isolierung des Leiters 1. Eine solche Leitung L hat in bevorzugter Ausführungsform einen größeren Leiterquerschnitt von beispielsweise 25 mm2. Es kann sich aber auch um eine Ader einer mehradrigen Leitung handeln. Das gilt grundsätzlich auch für eine Leitung L gemäß Fig. 2, bei welcher der Leiter 1 zunächst noch mit einer Isolierung 2 versehen ist, auf welche der Mantel M aufgebracht ist. Als Material für die Isolierung 2 wird beispielsweise Polypropylen verwendet.In the simplest embodiment, the line L shown in FIG. 1 consists of an electrical conductor 1, which is surrounded by a jacket M of insulating material. The jacket M here is thus at the same time the insulation of the conductor 1. Such a line L has in a preferred embodiment, a larger conductor cross-section of, for example 25 mm second But it can also be a vein of a multi-core line. This also applies in principle to a line L according to FIG. 2, in which the conductor 1 is initially provided with an insulation 2 to which the jacket M is applied. As the material for the insulation 2, for example, polypropylene is used.

Der Mantel M ist aus einer inneren Schicht 3 und einer äußeren Schicht 4 aufgebaut. Die beiden Schichten 3 und 4 sind fest miteinander verbunden. Sie bestehen vorzugsweise aus dem gleichen Basismaterial, wie beispielsweise einem TPE, haben durch die Zugabe von Zusatzstoffen zum Material der inneren Schicht 3 aber unterschiedliche Eigenschaften. Die Schichten 3 und 4 können in bevorzugter Ausführungsform im gleichen Arbeitsgang auf den Leiter 1 aufgebracht werden, beispielsweise durch Extrusion im Tandem oder durch Co-Extrusion. Sie verbinden sich dann direkt fest miteinander. Der Mantel M ist in den Zeichnungen nicht schraffiert dargestellt. Sein zweischichtiger Aufbau ist jeweils durch eine gestrichelte Linie markiert.The jacket M is made up of an inner layer 3 and an outer layer 4. The two layers 3 and 4 are firmly connected. They preferably consist of the same base material, such as a TPE, but have different properties due to the addition of additives to the material of the inner layer 3. The layers 3 and 4 can be applied in a preferred embodiment in the same operation on the conductor 1, for example by extrusion in tandem or by co-extrusion. They then connect directly to each other directly. The jacket M is not hatched in the drawings. Its two-layer structure is marked in each case by a dashed line.

Die innere Schicht 3 des Mantels M hat gegenüber der äußeren Schicht 4 sowohl eine deutlich geringere Reißfestigkeit als auch eine deutlich geringere Reißdehnung. Das kann beispielsweise dadurch erreicht werden, daß dem jeweiligen Basismaterial Additive beigemischt werden, die im Extrudat eine festigkeits- und dehnungsreduzierende Wirkung haben. Es kann sich beispielweise um Polyolefine und chemisch schäumbare Additive handeln. Darüber hinaus sind auch Füllstoffe oder Regeneratmaterialien als Zusatzstoffe verwendbar, die neben den gewünschten reduzierten Festigkeits- und Dehnungswerten auch zu einem reduzierten Brennwert und damit zu einer flammhemmenden Wirkung der extrudierten inneren Schicht 3 führen.The inner layer 3 of the jacket M has compared to the outer layer 4 both a significantly lower tensile strength and a significantly lower elongation at break. This can be achieved, for example, by adding additives to the respective base material which have a strength and elongation-reducing effect in the extrudate. They may be, for example, polyolefins and chemically foamable additives. In addition, fillers or regenerated materials can also be used as additives which, in addition to the desired reduced strength and elongation values, also lead to a reduced calorific value and thus to a flame-retarding effect of the extruded inner layer 3.

Zwingende Voraussetzung ist, daß die beiden getrennt aber im gleichen Fertigungsprozeß extrudierten Schichten 3 und 4 sehr gut, d. h. untrennbar und dauerhaft, miteinander verkleben. Die Verklebung muß auch bei Bewegungen, welche die Leitung L im Betrieb ausführt dauerhaft halten.Mandatory condition is that the two separately but extruded in the same manufacturing process layers 3 and 4 very well, d. H. Inseparable and permanent, stick together. The bond must also be permanent in the case of movements which the L-line carries out during operation.

Die beiden Schichten 3 und 4 sollen etwa gleich dick sein. Ihr Dickenverhältnis kann in der Praxis bei ca. 60 : 40 bis 40 : 60 liegen, wobei die 60 für die äußere Schicht 4 gilt. Hierdurch ist sichergestellt, daß sowohl die mechanische als auch die chemische Beständigkeit des Mantels M den gestellten Forderungen genügen.The two layers 3 and 4 should be about the same thickness. Their thickness ratio may in practice be about 60:40 to 40:60, the 60 being for the outer layer 4. This ensures that both the mechanical and the chemical resistance of the shell M meet the demands.

Die Reißfestigkeit der inneren Schicht 3 ist etwa nur halb so groß wie die der äußeren Schicht 4. Sie liegt beispielsweise bei 20 N/mm2. Ihre Reißdehnung ist etwa um den Faktor "3" kleiner als die der äußeren Schicht 4. Sie beträgt beispielsweise etwa 150 % gegenüber 500 % der äußeren Schicht 4.The tear strength of the inner layer 3 is about half as large as that of the outer layer 4. It is for example 20 N / mm 2 . Its elongation at break is smaller than that of the outer layer 4 by a factor of "3". For example, it is about 150% compared with 500% of the outer layer 4.

Im folgenden werden drei Beispiele für ein Material angegeben, das für die innere Schicht 3 verwendbar ist:The following are three examples of a material usable for the inner layer 3:

Beispiel 1example 1

Als Basismaterial wird das TPE Polyetherurethan verwendet, das mit der gleichen Menge eines Polyolefin-Elastomers vermischt wird.The base material used is the TPE polyether urethane, which is mixed with the same amount of a polyolefin elastomer.

Beispiel 2Example 2

Die Mischung besteht aus 40 % Polyetherurethan (TPE) als Basismaterial sowie 30 % eines Polyolefin-Elastomers und 30 % Calciumcarbonat als Zusatzstoffen.The mixture consists of 40% polyether urethane (TPE) as the base material and 30% of a polyolefin elastomer and 30% calcium carbonate as additives.

Beispiel 3Example 3

Die Mischung besteht aus 50 % Polyetherurethan (TPE) als Basismaterial sowie 20 % eines Polyolefins, 29 % Calciumcarbonat und 1 % eines Treibmittels als Zusatzstoffen.The mixture consists of 50% polyether urethane (TPE) as base material as well as 20% of a polyolefin, 29% calcium carbonate and 1% of a blowing agent as additives.

Die in Fig. 3 im Schnitt dargestellte elektrische Leitung L hat drei miteinander verseilte Adern A. Die Adern A bestehen aus dem Leiter 1 und der denselben umgebenden Isolierung 2. Sie sind hier gemeinsam vom Mantel M umgeben. Die Leiter 1 sind vorzugsweise flexible, aus Kupferdrähten bestehende elektrische Litzenleiter. Die Leitung L ist mit drei Adern A dargestellt. Es können auch zwei oder mehr als drei Adern A sein. Jede Ader A kann einen anderen Aufbau als die anderen Adern haben. Das gilt beispielsweise, wenn sowohl Energieadern als auch Steueradern in einer Leitung L vorhanden sind. Die Zwickel zwischen den Adern können zur Erzeugung einer etwa kreisrunden Umfangsfläche der "Seele" der Leitung L mit Füllmaterial oder durch das Material des die Adern A umgebenden Mantels M aufgefüllt sein.The electrical line L shown in section in FIG. 3 has three wires A stranded together. The wires A consist of the conductor 1 and the same surrounding it Insulation 2. You are here surrounded by the mantle M together. The conductors 1 are preferably flexible, made of copper wires electrical stranded wire. The line L is shown with three wires A. It can also be two or more than three wires A. Each wire A can have a different structure than the other wires. This applies, for example, if both energy wires and control wires are present in a line L. The gussets between the wires can be filled to produce an approximately circular peripheral surface of the "soul" of the line L with filler material or by the material of the surrounding the wires A shell M.

Zum Abmanteln des Endes der Leitung L braucht nur die äußere Schicht 4 des Mantels M mit einem Rundschnitt vollständig durchtrennt zu werden. Der Mantel M kann dann in Längsrichtung der Leitung L abgerissen werden, so daß die drei Adern A vom Mantel M befreit sind. Das ist in Fig. 4 dargestellt. Ein beim Durchtrennen der äußeren Schicht 4 gleichzeitig erfolgendes geringes Anritzen der inneren Schicht 3 kann für das Abreißen vorteilhaft sein.To strip the end of the line L, only the outer layer 4 of the shell M with a round cut needs to be completely cut. The jacket M can then be torn off in the longitudinal direction of the line L, so that the three wires A are exempt from the jacket M. This is shown in Fig. 4. A simultaneous minor scoring of the inner layer 3 during the severing of the outer layer 4 may be advantageous for the tearing off.

Bei den Ausführungsformen der Leitung L nach den Fig. 5 und 6 ist über dem isolierten Leiter 1 bzw. den Adern A ein als Geflecht oder Umseilung ausgeführter elektrischer Schirm 5 angebracht. Vor dem Extrudieren des Mantels M kann zweckmäßig eine Trennschicht 6 um den Schirm 5 herumgelegt werden, durch welche ein Eindringen des Materials der inneren Schicht 3 des Mantels M in denselben verhindert wird. Das ist für die einfache Abmantelung der Leitung L erforderlich. Die Trennschicht 6 besteht vorzugsweise aus einem Material, daß mit der inneren Schicht 3 des Mantels M verklebt.In the embodiments of the line L according to FIGS. 5 and 6, an electrical screen 5 designed as a braid or roping is attached over the insulated conductor 1 or the cores A, respectively. Before the extrusion of the jacket M, it is expedient to lay a separating layer 6 around the screen 5, by means of which penetration of the material of the inner layer 3 of the jacket M into the same is prevented. This is necessary for the simple stripping of the L line. The separating layer 6 is preferably made of a material that adheres to the inner layer 3 of the shell M.

Bei der Ausführungsform der Leitung L nach Fig. 6 sind in den Zwickeln zwischen den Adern A Füllelemente 7 angeordnet. Vor Anbringung des Schirms 5 wird zweckmäßig eine Bewicklung 8 über Adern A und Füllelementen 7 aufgebracht, die als Unterlage für den Schirm 5 dient. Die Bewicklung 8 kann aus einem Faservlies bestehen, wie beispielsweise einem Polyestervlies.In the embodiment of the line L of FIG. 6 A filling elements 7 are arranged in the interstices between the wires. Before attaching the screen 5, a winding 8 is suitably applied via cores A and filling elements 7, which serves as a support for the screen 5. The winding 8 may consist of a non-woven fabric, such as a polyester fleece.

Claims (5)

  1. A line with at least one transmission element, which is surrounded by a sheath of insulating material, characterized in
    - that the sheath (M) consists of an inner layer (3) and an outer layer (4), which are firmly bonded to each other,
    - that the tensile strength of the inner layer (3) is approximately half of that of the outer layer (4) and
    - that the elongation at break of the inner layer (3) is no more than approximately one third of the elongation at break of the outer layer (4).
  2. A line according to claim 1, characterized in that the tensile strength of the inner layer (3) is about 20 N/mm2.
  3. A cable according to claim 1, characterized in that the elongation at break of the inner layer (3) is about 150 %.
  4. A cable according to claim 1, characterized in that the two layers (3,4) of the sheath (M) are of approximately the same thickness.
  5. A cable according to claim 1, characterized in that the thickness ratio of the outer layer (4) to the inner layer (3) is between 60:40 and 40:60.
EP01401875A 2000-07-29 2001-07-12 Cable having at least one transmission element Expired - Lifetime EP1176613B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10037010 2000-07-29
DE10037010A DE10037010A1 (en) 2000-07-29 2000-07-29 Flexible electrical cable for drag chains

Publications (3)

Publication Number Publication Date
EP1176613A2 EP1176613A2 (en) 2002-01-30
EP1176613A3 EP1176613A3 (en) 2003-01-15
EP1176613B1 true EP1176613B1 (en) 2008-01-23

Family

ID=7650660

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01401875A Expired - Lifetime EP1176613B1 (en) 2000-07-29 2001-07-12 Cable having at least one transmission element

Country Status (6)

Country Link
US (1) US6921864B2 (en)
EP (1) EP1176613B1 (en)
AT (1) ATE385033T1 (en)
CA (1) CA2354482C (en)
DE (2) DE10037010A1 (en)
ES (1) ES2296717T3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9129727B2 (en) * 2009-05-04 2015-09-08 Panduit Corp. Communication cable with embossed tape having encapsulated gas
EP2584567B1 (en) * 2011-10-20 2016-02-10 Nexans Easily stripped electric cable
JP5737323B2 (en) 2013-05-01 2015-06-17 住友電気工業株式会社 Electrical insulation cable
DE102016110571A1 (en) * 2016-06-08 2017-12-14 Coroplast Fritz Müller Gmbh & Co. Kg "Coaxial electrical cable for automatable processing processes"
US10297365B2 (en) * 2016-10-31 2019-05-21 Schlumberger Technology Corporation Cables with polymeric jacket layers

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US3852518A (en) * 1973-11-29 1974-12-03 Gen Cable Corp Irradiation cross-linked composite low density/high density polyethylene insulated 600 volt power cables
DE7802498U1 (en) * 1978-01-25 1979-07-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen Electrical conductor with two-layer insulation
US4430385A (en) * 1982-02-18 1984-02-07 Western Electric Company, Inc. Compositely insulated conductor having a layer of irradiation cross-linked polymeric plastic material
US5059483A (en) * 1985-10-11 1991-10-22 Raychem Corporation An electrical conductor insulated with meit-processed, cross-linked fluorocarbon polymers
DE3604311C2 (en) * 1986-02-12 1993-11-04 Kabelmetal Electro Gmbh MULTI-WIRE ELECTRIC CABLE FOR ENERGY AND SIGNAL TRANSMISSION
DE3919880C2 (en) * 1989-06-19 1994-10-20 Kabelmetal Electro Gmbh Multi-core flexible electrical cable for energy transmission
EP0646936A1 (en) * 1993-10-04 1995-04-05 Siemens Aktiengesellschaft Insulated conductor, cable or insulating pipe and process for manufacturing insulation
US5426264A (en) * 1994-01-18 1995-06-20 Baker Hughes Incorporated Cross-linked polyethylene cable insulation
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FR2758647B1 (en) * 1997-01-22 1999-02-26 Plasto Sa SHEATH FOR WIRE HARNESSES
US5861578A (en) * 1997-01-27 1999-01-19 Rea Magnet Wire Company, Inc. Electrical conductors coated with corona resistant, multilayer insulation system
US6100474A (en) * 1997-06-23 2000-08-08 Essex Group, Inc. Magnet wire insulation for inverter duty motors
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Also Published As

Publication number Publication date
US6921864B2 (en) 2005-07-26
US20020011346A1 (en) 2002-01-31
CA2354482A1 (en) 2002-01-29
CA2354482C (en) 2008-05-13
ATE385033T1 (en) 2008-02-15
DE50113524D1 (en) 2008-03-13
EP1176613A2 (en) 2002-01-30
ES2296717T3 (en) 2008-05-01
EP1176613A3 (en) 2003-01-15
DE10037010A1 (en) 2002-02-07

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