Laminated film and packaging material

B - Operations – Transporting – 32 – B

Patent

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B32B 27/36 (2006.01) B32B 27/08 (2006.01)

Patent

CA 2202324

A laminated film superior in the heat resistance, shock resistance, moisture-barriering property and easy hand-tearability, which comprises one or more layers of a thermoplastic polyester resin (A), one or more layers of a resin based on cycloolefin (C) and one or more interposed layers of an adhesive (B) between layer (A) and layer (C), wherein the layer(s) of the thermoplastic polyester resin (A) and/or the layer(s) of the resin based on cycloolefin (C) have been biaxially stretched and wherein the total thickness of the layer(s) of the thermoplastic polyester resin (A), the total thickness of the layer(s) of the adhesive (B) and the total thickness of the layer(s) based on cycloolefin (C) are 0.5 - 50 µ m, 0.5 - 20 µ m and 5 - 150 µ m, respectively.

Pellicule laminée de qualité supérieure au niveau de la résistance thermique, de la résilience, de l'efficacité comme barrière anti-humidité et de la facilité de déchirement à la main; la pellicule se compose d'une ou de plusieurs couches de résine de polyester thermoplastique (A), d'une ou de plusieurs couches d'une résine à base de cyclooléfine (C) et d'une ou de plusieurs couches intercalées d'un adhésif (B) entre la couche (A) et la couche (C); la ou les couches de résine de polyester thermoplastique (A) et (ou) la ou les couches de résine à base de cyclooléfine (C) ont été étirées biaxialement; l'épaisseur totale de la ou des couches de résine de polyester thermoplastique (A), l'épaisseur totale de la ou des couches d'adhésif (B) et l'épaisseur totale de la ou des couches de résine à base de cyclooléfine (C) sont respectivement de 0,5-50, 0,5-20 et 5-150 microns.

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