Laminated film and method for manufacturing laminated film

Details Laminated film and method for manufacturing laminated film Laminated film and method for manufacturing laminated film

B - Operations, Transporting

32

B

B32B 27/00 (2006.01) B32B 27/08 (2006.01)

Patent

CA 2468843

A layered film which comprises a thermoplastic resin film and, superposed on at least one side thereof, an overlay film at least 50 wt.% of which is accounted for by a composition (A) and a crosslinking agent (B), wherein the composition (A) comprises polythiophene and a polyanion or comprises a polythiophene derivative and a polyanion and the overlay film has a sea-island structure in which the crosslinking agent (B) is present in the composition (A). The layered film can have a high level of antistatic properties not influenced by moisture changes, which have not been attained hitherto. It is excellent also in transparency, water resistance, and abrasion resistance.

L'invention concerne un film en couches comprenant un film de résine thermoplastique et un film de revêtement, déposé sur au moins un côté dudit film thermoplastique, au moins 50 % en poids du film de revêtement étant constitué par une composition (A) et un agent de réticulation (B). La composition (A) contient du polythiophène et un polyanion, ou un dérivé de polythiophène et un polyanion, et le film de revêtement présente une structure sea-island dans laquelle l'agent de réticulation (B) est présent dans la composition (A). Le film en couches selon l'invention présente des propriétés antistatiques jamais obtenues jusqu'à présent, ces propriétés n'étant pas altérées par les changements d'humidité. Ce film présente également une transparence, une résistance à l'eau et une résistance à l'abrasion excellentes.

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