Multilayer films

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 27/32 (2006.01) B32B 15/08 (2006.01)

Patent

CA 2493938

An oriented multilayer film containing a core layer and a first skin layer, wherein the first skin layer includes a metallocene-catalyzed propylene homopolymer or copolymer, and the first skin layer is metallized. The film may also contain additional layers, such as a second skin layer for heat-sealing, and one or more tie layers. The film may be laminated to other films or non- films. The film exhibits desirable water vapor transmission rates (WVTR) and oxygen transmission rates (OTR).

L'invention concerne un film multicouches orienté contenant une couche noyau et une première couche de peau. Cette première couche de peau comprend un homopolymère ou un copolymère de propylène catalysé par un métallocène, et elle est métallisée. Ce film peut en outre comprendre des couches additionnelles telles qu'une seconde couche de peau permettant le thermoscellage, et une ou plusieurs couches de liaison. Ce film peut être stratifié avec d'autres films ou des supports autres que des films. Ce film présente des coefficients de transmission de vapeur d'eau (WVTR) et des taux de transmission à l'oxygène (OTR) appropriés.

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