Transparent laminated structure having peel-away film layers...

B - Operations – Transporting – 60 – J

Patent

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Details

B60J 1/20 (2006.01)

Patent

CA 2574106

A transparent laminated structure having multiple peel-away laminated film layers for protecting windscreens, particularly windscreens of rotary aircraft, from environmental conditions. The laminated structure includes at least one laminated layer wherein each layer includes a film, a bonding layer on a first major side of the film for releaseably attaching the film to either the windscreen or to an adjacent laminated film layer, a conductive material on a second major side of the film for dissipating electrostatic charging in the laminated structure that may occur due to accumulated precipitation static during aircraft fight, and a hard coat layer for protecting the relatively softer film against abrasion. As the outermost film layer becomes degraded below acceptable levels, that film may be easily removed, exposing a subsequent unblemished film layer.

L'invention concerne une structure stratifiée transparente, qui présente plusieurs couches de pellicule pelables destinées à protéger des pare-brises, en particulier des pare-brises d'avion, des conditions environnementales. La structure stratifiée de l'invention comprend: au moins une couche stratifiée, chaque couche présentant une pellicule; une couche de liaison disposée sur un premier côté principal de la pellicule pour fixer de manière détachable cette dernière soit au pare-brise, soit à une couche de pellicule stratifiée adjacente; un matériau conducteur disposé sur un second côté principal de la pellicule pour dissiper, dans la structure stratifiée, une charge électrostatique pouvant provenir de parasites statiques accumulés en vol; et une couche de revêtement dur servant à protéger la pellicule relativement plus molle contre l'abrasion. Lorsque la couche de pellicule le plus à l'extérieur s'est dégradée au-delà de seuils acceptables, ladite pellicule peut être retirée facilement pour découvrir une couche de pellicule suivante intacte.

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