Multi-layer films, methods of manufacture and articles made...

Details Multi-layer films, methods of manufacture and articles made... Multi-layer films, methods of manufacture and articles made...

B - Operations, Transporting

32

B

B32B 27/32 (2006.01) B32B 27/08 (2006.01)

Patent

CA 2625733

Multi-layer films particularly suited for packaging applications, including a core layer, a tie layer made from at least 10 wt% of a first polymer and where the first polymer preferably is not present in the core layer are provided. Optionally, the multi-layer film may have a skin layer, a second tie layer and/or a second skin layer. Embodiments may have the advantage of improved seal strength, hermeticity, hot tack and reduced-temperature sealability.

L'invention concerne des films multicouches convenant notamment à des applications d'emballage et comprenant une couche centrale, ainsi qu'une couche de liaison constituée d'au moins 10 % en poids d'un premier polymère qui n'est de préférence pas présent dans la couche centrale. Facultativement, le film multicouche selon l'invention peut également comprendre une couche pellicule, une deuxième couche de liaison et/ou une deuxième couche pellicule. L'invention permet d'améliorer la résistance du scellage, l'étanchéité, la tenue à chaud des soudures et l'aptitude au scellage à température réduite.

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