Transparent, non-blocking film

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 53/02 (2006.01) B32B 27/02 (2006.01) B32B 27/28 (2006.01) C08J 5/18 (2006.01)

Patent

CA 2224603

A film in roll form, especially for packaging foodstuffs as a substitute for PVC film, of 15 to 99.6 wt% of a rubber-elastic styrene-butadiene block copolymer, 15 to 99.6 wt% of a thermoplastic polymer, 0.1 to 10 wt% of an anti- fogging agent, 0.1 to 5 wt% of a primary antioxidant, 0.1 to 5 wt% of a secondary antioxidant and 0.1 to 50 wt% of other auxiliaries. The transverse shrinkage of said film is not more than 3 % after three months' storage.

L'invention concerne un film sous forme de rouleau, notamment pour l'emballage de denrées alimentaire servant à remplacer un film de polychlorure de vinyle. Le film de l'invention contient 15 à 99,6 % en poids d'un copolymère bloc styrène-butadiène présentant l'élasticité du caoutchouc; 15 à 99,6 % en poids d'un polymère thermoplastique; 0,1 à 10 % en poids d'un agent anticondensation; 0,1 à 5 % en poids d'un antioxydant primaire; 0,1 à 5 % en poids d'un antioxydant secondaire et 0,1 à 50 % en poids d'autres additifs. Le retrait transversal de ce film est inférieur à 3 %, pendant une durée de stockage de trois mois.

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