Laminate electrical insulation part

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 5/26 (2006.01) B32B 27/12 (2006.01) B32B 27/36 (2006.01)

Patent

CA 2681126

This invention relates to a laminate electrical insulation part for an electrical device comprising a thermoplastic film positioned between, adjacent to, and attached to two nonwoven sheets. Each of the nonwoven sheets consists of multicomponent polymeric fibers comprising at least a first polymer and a second polymer, the first polymer having a melting point that is at least 15 degrees Celsius lower than both the melting point of the second polymer and the melting point of the thermoplastic film, and the film is attached to the nonwoven sheets by the first polymer in the nonwoven sheets. The electrical insulation part has a breakdown voltage of at least 3 kilovolts, and a surface having a dynamic frictional coefficient of 0.25 or less. This invention also relates to an electrical device component comprising the laminate electrical insulation part.

L'invention concerne une partie d'isolation électrique stratifiée destinée à un dispositif électrique et comprenant un film thermoplastique positionné entre deux feuilles non tissées, adjacent à celles-ci et fixé sur celles-ci. Chacune des feuilles non tissées est constituée de fibres polymériques à plusieurs composants comprenant au moins un premier polymère et un second polymère. Le point de fusion du premier polymère est au moins inférieur de 15 degrés Celsius au point de fusion du second polymère et au point de fusion du film thermoplastique. Le film est fixé sur les feuilles non tissées par l'intermédiaire du premier polymère dans les feuilles non tissées. La tension disruptive de la partie d'isolation électrique est d'au moins 3 kilovolts ; sa surface présente un coefficient de frottement dynamique de 0,25 ou moins. La présente invention concerne également un composant de dispositif électrique contenant la partie d'isolation électrique stratifiée.

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