Styrene resin film

Details Styrene resin film Styrene resin film

C - Chemistry, Metallurgy

08

J

C08J 7/04 (2006.01) C08G 65/26 (2006.01) C08J 7/00 (2006.01) C08J 7/12 (2006.01) C08J 7/14 (2006.01) C08L 71/02 (2006.01) C08L 83/12 (2006.01)

Patent

CA 2392489

Styrene resin films having been imparted antistatic properties to both film surfaces and good adhesion properties of the films to envelope paper, and a process for producing the same. In these styrene resin films, the surface tension of the front surface of the film base differs from the surface tension of the back surface owing to a hydrophilic treatment and modifiers having almost the same compositions are applied onto the respective surfaces each in an adequate weight.

L'invention concerne un film en résine au styrène dont les deux faces présentent des propriétés antistatiques et qui offre une adhérence satisfaisante sur du papier pour enveloppes, ainsi qu'un procédé relatif à l'élaboration de ce film. Pour obtenir le film en question, on traite une base de film en vue de la rendre hydrophile de manière à conférer des tensions superficielles différentes aux faces avant et arrière du film et à appliquer respectivement sur ces faces des modificateurs d'adhérence ayant presque la même composition, selon des quantités respectives appropriées.

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