Protected polycarbonate films having thermal and uv...

Details Protected polycarbonate films having thermal and uv... Protected polycarbonate films having thermal and uv...

C - Chemistry, Metallurgy

08

J

C08J 7/04 (2006.01) B32B 27/32 (2006.01) B32B 27/36 (2006.01)

Patent

CA 2601753

A composite film (100) is disclosed, comprising a protective layer (100) comprising an adhesion- modified polyolefin film (120), a coating layer (130) comprising the reaction product of a crosslinkable compound, an initiator, and a binder; and a polycarbonate layer (140); wherein the coating layer (130) is disposed between the protective layer (110) and the polycarbonate layer (140), and the peel strength between the protective layer (110) and the polycarbonate layer (140), as measured both before and after thermal treatment or a combination of thermal and UV treatment of the composite film (100), is about 1 to about 20 centi-Newtons per centimeter measured using 180~ angle peel measured at a peel rate of 25.4 cm/min. A method for forming a composite film (100), and an article comprising the composite film (100), are also disclosed.

La présente invention a trait à un film composite (100) comportant une couche de protection (110) comprenant un film à base de polyoléfine modifié par adhésion (120), une couche de revêtement (130) comprenant le produit réactionnel d'un composé réticulable, un initiateur, et un liant; et une couche de polycarbonate (140); dans lequel la couche de revêtement (130) est disposée entre la couche de protection (110) et la couche de polycarbonate (140), et la résistance au pelage entre la couche de protection (110) et la couche de polycarbonate (140), telle que mesurée avant et après traitement thermique ou une combinaison de traitement thermique et aux rayons ultraviolets du film composite (100), est d'environ de 1 à environ 20 centi-Newtons par centimètre mesurée en utilisant un pelage d'angle de 180° mesuré à un taux de pelage de 25,4 cm/min. L'invention a également trait à un procédé pour la formation d'un film composite (100), à un article comportant le film composite (100).

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