DE882583C - Electric line with two or more layers of insulation - Google Patents

Electric line with two or more layers of insulation

Info

Publication number
DE882583C
DE882583C DEM11225A DEM0011225A DE882583C DE 882583 C DE882583 C DE 882583C DE M11225 A DEM11225 A DE M11225A DE M0011225 A DEM0011225 A DE M0011225A DE 882583 C DE882583 C DE 882583C
Authority
DE
Germany
Prior art keywords
layers
insulation
electric line
insulating
insulating layer
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
Application number
DEM11225A
Other languages
German (de)
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.)
Fritz Mueller K G
Original Assignee
Fritz Mueller K G
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 Fritz Mueller K G filed Critical Fritz Mueller K G
Priority to DEM11225A priority Critical patent/DE882583C/en
Application granted granted Critical
Publication of DE882583C publication Critical patent/DE882583C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/02Disposition of insulation
    • H01B7/0275Disposition of insulation comprising one or more extruded layers of insulation

Landscapes

  • Insulated Conductors (AREA)

Description

Bei elektrischen Leitungen mit mehrfach übereinandergelagerten Isolierschichten wird einerseits die Forderung gestellt, d@aß die Isolierschichten nicht aneinanderkleben, so daß eine Freilegung der einzelnen Schichten (Abisolierung) ohne Schwierigkeit vorgenommen. werden kann.For electrical lines with multiple layers of insulation On the one hand, the requirement is that the insulating layers do not stick to one another, so that the individual layers can be exposed (stripping) without difficulty performed. can be.

Andererseits sollen. aber die einzelnen Schichten nicht -so locker aufeinanderliegen, daß sie sich mühelos gegeneinander verschieben lassen. Sie dürfen. also nicht aufeinander gleiten. Die Forderung ist bei: mehrfach isolierten Leitungen bei Anwendung von Kunststoffen nicht ohne weiteres zu erfüllen, insbesondere dann nicht, wenn für die einzelnen Isolierschichten verschiedene verwandt werden. Manche- Kunststoffarten ergeben beim Umspritzen des Leiters einen so glatten Überzug, daß eine zweite Umhüllung aus einem anders gearteten Isolierstoff nicht -darauf haften kann. Andere; Kunststoffarten.,- insbesondere solche, welche einen paraffinähnlichen Charakter besitzen, wirken gegen eine Barüberliegende Isolierschickt aus einem,artfremden Werkstoff abstoßend. Da ferner die Isolierschichten ausl verschiedenen Kunststoffarten nach dem Abkühldn unterschiedliche Schrumpfungen zeigen, können auch hierdurch Zwischenräume zwischen den Isolierstoffhüllen entstehen so däß die obere Schicht auf der unteren Schicht nicht genügend festhaftet, sondern gleiten kann.On the other hand should. but the individual layers are not so loose lie on top of one another so that they can easily be moved against one another. They may. so don't slide on each other. The requirement is for: cables with multiple insulation not easily met when using plastics, especially then not if different layers are used for the individual insulating layers. Some- When molded around the conductor, types of plastic produce such a smooth coating that a second covering made of a different type of insulating material does not adhere to it can. Other; Types of plastic., - especially those that have a paraffin-like Have character, work against a bar across the street from an insulated, alien Repellent material. Furthermore, since the insulating layers are made of different types of plastic show different shrinkage after cooling, this can also result in gaps Between the insulating sheaths, the upper layer is created on the lower one Layer does not adhere firmly enough, but can slide.

Zur Behebung dieser - Nachteile - wird vorgeschlagen, bei einer zwei- oder mehrschichtigen Isolierung aus gleich- oder verschiedenartigen Kunststoffen' jeweils die Oberfläche deY '-unteren Isolierschicht geriffelt oder gerillt auszuführen edel in anderer Weise mit Kanten; Leisten, Vorsprüngen u. dgl. Auf rauhungen zu versehen, auf welcbe danr die nächstfolgende Isolierschicht z. B. durch Spritzen aufgebracht wird. Hierbei dringt die aufgespritzt obere Schicht in die Rillen oder Vertiefungen der _aufgerauhten darunterliegenden Schicht und ge-Währleistet ,dadurch sowie auch infolge der wesentlich vergrößerten Oberfläche eine feste Verankerung zwischen, den beiden Schichten, so daß die Isolierhüllen nicht mehr gegeneinander verschiebbar sind.To remedy these - disadvantages - it is suggested, with a two- or multilayer insulation made of identical or different types of plastics' the surface of the lower insulating layer should be corrugated or grooved noble in a different way with edges; Moldings, protrusions and the like. Roughening up provided, on welcbe danr the next insulating layer z. B. by spraying is applied. Here, the sprayed-on top layer penetrates the grooves or Depressions in the roughened layer underneath and thereby ensured as well as a firm anchorage due to the significantly larger surface between, the two layers, so that the insulating sleeves are no longer against each other are movable.

In der Zeichnung ist ein Ausführungsbeispiel gemäß der Erfindung in perspektivischer Ansicht dargestellt. Hierbei bedeutet z das elektrische Kabel; auf welches eine mit Längsrillen 2 versehene Isolierschicht 3-t. B: durch Spritzen aufgebracht ist. Auf diese Isolierschicht ist dann .die zweite Isolierschicht q. aufgespritzt; die in die Zwischenräume der Rillen 2 eindringt. und dadurch gegen Verschieben gesichert ist.In the drawing, an embodiment according to the invention is shown in FIG shown in perspective view. Here z means the electrical cable; on which an insulating layer 3-t provided with longitudinal grooves 2. B: by spraying is upset. The second insulating layer q is then on top of this insulating layer. sprayed on; which penetrates into the spaces between the grooves 2. and thereby against Moving is secured.

Claims (1)

PATENTANSPRUCH: Elektrische Leitung mit zwei- oder mehr---schichtiger Isolierung aus verschiedenem Werltstoff, vorzugsweise auf Basis von hochpolymeren Kunststoffen, dadurch gekennzeichnet, daß die Oberfläche der unteren Isolierschicht geriffelt; _ -gerillt -.oder. -in anderer Weise mit Kanten, Leisten, Vor-sprüngen ü. dgi: Aufrauhungen versehen ist, auf welche die nächstfolgende Schicht aus gegebenenfalls artfremden Isolierstoffen; z. B. durch -Spritzen, aufgebracht wird.PATENT CLAIM: Electric cable with two or more --- layers Insulation made of various materials, preferably based on high polymers Plastics, characterized in that the surface of the lower insulating layer corrugated; _ -grooved -.or. -in another way with edges, ridges, protrusions ü. dgi: roughening is provided on which the next following layer may be dissimilar insulating materials; z. B. by spraying, is applied.
DEM11225A 1951-10-06 1951-10-06 Electric line with two or more layers of insulation Expired DE882583C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM11225A DE882583C (en) 1951-10-06 1951-10-06 Electric line with two or more layers of insulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM11225A DE882583C (en) 1951-10-06 1951-10-06 Electric line with two or more layers of insulation

Publications (1)

Publication Number Publication Date
DE882583C true DE882583C (en) 1953-07-09

Family

ID=7295475

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM11225A Expired DE882583C (en) 1951-10-06 1951-10-06 Electric line with two or more layers of insulation

Country Status (1)

Country Link
DE (1) DE882583C (en)

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