Heat-shrinkable layered film and package made with the same

Details Heat-shrinkable layered film and package made with the same Heat-shrinkable layered film and package made with the same

B - Operations, Transporting

32

B

B32B 27/30 (2006.01) C08J 7/04 (2006.01)

Patent

CA 2523239

A heat-shrinkable layered film which comprises a layer comprising a polycarboxylic acid polymer, a layer comprising a polyvalent-metal compound, and a heat-shrinkable substrate film. Specifically, the heat-shrinkable layered film comprises a heat-shrinkable substrate film (base film) and, disposed on at least one side thereof, at least one pair of layer constitutions comprising a layer (a) comprising a polycarboxylic acid polymer (A) and, adjacent thereto, a layer (b) comprising a polyvalent-metal compound (B), and the film has a degree of heat shrinkage of 3 to 90%. Also provided are: a package obtained by packaging an article with the heat-shrinkable layered film; and a heat-shrinkable label.

L'invention concerne un film en couches thermorétractable comprenant une couche renfermant un polymère acide polycarboxylique, une couche présentant un composé de métal polyvalent et un film de substrat thermorétractable. Plus précisément, le film en couches thermorétractable comprend un film de substrat thermorétractable (film de base) et, disposés sur au moins un côté de celui-ci, au moins deux ensembles de couches présentant une couche (a) comprenant un polymère acide polycarboxylique (A) et, adjacente à celle-ci, une couche (b) comprenant un composé de métal polyvalent (B) et le film a un degré de thermorétractibilité compris entre 3 et 90 %. L'invention concerne enfin un emballage obtenu par emballage d'un article au moyen du film en couches thermorétractable et une étiquette thermorétractable.

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