Multilayer film and process for producing the same

Details Multilayer film and process for producing the same Multilayer film and process for producing the same

B - Operations, Transporting

32

B

B32B 15/08 (2006.01) B05D 5/06 (2006.01) B05D 7/24 (2006.01) B32B 9/00 (2006.01) B32B 27/00 (2006.01) B32B 27/06 (2006.01) B32B 27/08 (2006.01) C08J 7/04 (2006.01) C08J 7/18 (2006.01) H01G 4/18 (2006.01) B05D 3/06 (2006.01) B05D 3/14 (2006.01)

Patent

CA 2365039

A multilayered film which is excellent in quality and processability and can be safely and stably produced. The film is characterized in that it comprises a substrate and, formed thereon, a polymer resin layer and a vapor-deposited film of a metal and/or a metal oxide and that at least 80 wt.% of the polymer resin layer is accounted for by a polymer of an unsaturated compound having at least two ethylene bonds and/or acetylene bonds per molecule and having neither an acrylic nor methacrylic group. The film having a vapor-deposited metal coating is usable as a packaging film having gas-barrier properties, a film for capacitors, etc.

L'invention concerne un film multicouche excellent aux niveaux de la qualité et de l'aptitude au traitement, que l'on peut produire en toute sécurité et de manière stable. Ce film comprend un substrat sur lequel sont formés une couche de résine polymère et un film métallique et/ou d'oxyde de métal déposé par évaporation. Au moins 80 % en poids de la couche de résine polymère est représenté par un polymère d'un composé insaturé présentant au moins deux liaisons éthylène et/ou acétylène par molécule, sans groupe acrylique ou méthacrylique. Le film à revêtement métallique déposé par évaporation peut servir comme film d'emballage ayant des propriétés d'étanchéité aux gaz, film pour condensateurs, etc.

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