Cable having expanded, strippable jacket

Details Cable having expanded, strippable jacket Cable having expanded, strippable jacket

H - Electricity

01

B

H01B 9/02 (2006.01) H01B 7/18 (2006.01)

Patent

CA 2614027

An electric power cable contains a core and a jacket forming the exterior of the cable. The jacket is formed by extruding a first layer and a second layer over a plurality of concentric neutral elements, substantially encapsulating these elements. At least the first layer is an expanded polymeric material, by having its density reduced through the use of a foaming agent during extrusion. The second layer, which may also be expanded, is extruded around the first layer. The expanded polymeric material makes stripping the jacket easier, minimizes indentations in the cable's insulation layers, lightens the cable, and increases the cable's flexibility.

La présente invention a trait à un câble d'énergie électrique contenant un coeur et une gaine formant l'extérieur du câble. La gaine est formée par l'extrusion d'une première couche et d'une deuxième couche sur une pluralité d'éléments neutres concentriques, recouvrant sensiblement ces éléments. Au moins la première couche est un matériau polymère expansé, présentant une densité réduite grâce à l'utilisation d'un agent moussant lors de l'extrusion. La deuxième couche, qui peut également être expansée, est extrudée autour de la première couche. Le matériau polymère expansé facilite le dénudage de la gaine, minimise les indentations dans les couches d'isolation du câble, et accroît la flexibilité du câble.

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