B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/32 (2006.01) B29C 49/24 (2006.01) B29C 55/02 (2006.01) B29C 55/12 (2006.01) B32B 5/18 (2006.01) C08K 5/00 (2006.01) C08K 5/01 (2006.01) C08L 23/08 (2006.01) C08L 33/00 (2006.01) C09J 123/08 (2006.01) G09F 3/04 (2006.01) C08L 23/06 (2006.01) C08L 23/16 (2006.01)
Patent
CA 2449161
The invention relates to a multilayer biaxially oriented polyolefin film consisting of a base layer, of at least one first intermediate layer and of a first cover layer that is applied to said intermediate layer. The first intermediate layer is made of a terpolymer consisting of three different monomers (a), (b) and (c), whereby (a) is an olefin, (b) is an unsaturated carboxylic acid or esters thereof, and (c) is an unsaturated carboxylic acid or carboxylic acid ester, which is different from (b), or is a carboxylic acid anhydride. In addition, the first cover layer contains a copolymer, which is comprised of an olefin and of an unsaturated carboxylic acid or esters thereof, and this first cover layer additionally contains an additive.
La présente invention concerne un film polyoléfine multicouche à orientation biaxiale comprenant une couche de base et au moins une première couche intermédiaire et une première couche de recouvrement appliquée sur ladite couche intermédiaire. Selon l'invention : la première couche intermédiaire est réalisée à partir d'un terpolymère qui est constitué de trois monomères différents (a), (b) et (c), (a) représentant une oléfine, (b) représentant un acide carboxylique insaturé ou un ester de celui-ci, et (c) représentant un acide carboxylique insaturé ou ester d'acide carboxylique différent de (b) ou un hydrure d'acide carboxylique ; et la première couche de recouvrement contient un copolymère qui contient une oléfine et un acide carboxylique ou son ester, ladite couche de recouvrement contenant également un additif.
Holzer Susanne
Wieners Gerhard
Fetherstonhaugh & Co.
Trespaphan Gmbh
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