Halogen-free, printable, multilayered shrink films and...

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 27/08 (2006.01) B32B 27/32 (2006.01) B65B 53/02 (2006.01) B65D 85/88 (2006.01)

Patent

CA 2349860

The present invention relates to a halogen-free, multilayered heat shrink film comprising (A) a core layer (11) comprising a copolymer of ethylene or propylene with an alpha olefin and the core (11) having an upper and lower surface, (B) a skin layer (12) on the upper surface of the core layer (11), wherein the skin layer (12) comprises a polyolefin or polyolefin blend and (C) a printable layer (13) on the lower surface of the core layer (11), wherein the shrinkage of the film is at least about 30 %. The invention also relates to articles, including cylindrical articles such as batteries. The films have good shrinkage and avoid end puckering. Additionally, the films are printable, even with gravure printing. The films and labels produced therefrom may be applied at high speeds and have good heat stability.

La présente invention concerne un film multicouche thermorétrécissable exempt d'halogène, comprenant : (A) une couche intermédiaire (11) comprenant un copolymère d'éthylène ou de propylène avec une alpha oléfine, présentant une surface supérieure et une surface inférieure, (B) une couche superficielle (12) sur la surface supérieure de la couche intermédiaire (11) contenant une polyoléfine ou un mélange polyoléfinique et (C) une couche imprimable (13) sur la surface inférieure de la couche intermédiaire (11), le retrait du film étant d'au moins 30 %. L'invention concerne également des articles, y compris des articles cylindriques tels que des piles. Les films de l'invention présentent un bon retrait et empêchent la formation de plis. Ces films sont imprimables, même par impression en creux. Les films et étiquettes produits selon l'invention peuvent être utilisés à grande vitesse et présentent une bonne stabilité thermique.

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