B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/32 (2006.01)
Patent
CA 2378268
The present invention is a high barrier multilayer film particularly suitable for packaging. The high barrier multilayer film is a film including (a) a core substrate layer having an isotactic polypropylene produced from Ziegler-Natta catalysts, and (b) an adjacent layer on at least one surface of the core substrate layer, wherein the adjacent layer (b) comprises an isotactic polypropylene produced from metallocene catalysts; or the high barrier multilayer film includes (a') a core substrate layer having an isotactic polypropylene produced from metallocene catalysts, and (b') an adjacent layer on at least one surface of the core substrate layer, wherein the adjacent layer (b') comprises an isotactic polypropylene produced from Ziegler-Natta catalysts.
La présente invention concerne un film haute barrière multicouche particulièrement approprié pour l'emballage. Ce film haute barrière multicouche est un film comprenant (a) une couche de substrat centrale renfermant un polypropylène isotactique produit à partir de catalyseurs Ziegler-Natta, et (b) une couche adjacente apposée sur une surface au moins de la couche de substrat centrale, ladite couche adjacente (b) comprenant un polypropylène isotactique produit à partir de catalyseurs métallocènes ; ou le film haute barrière multicouche comprend (a') une couche de substrat centrale renfermant un polypropylène isotactique produit à partir de catalyseurs métallocènes, et (b') une couche adjacente apposée sur une surface au moins de la couche de substrat centrale, ladite couche adjacente (b') comprenant un polypropylène isotactique produit à partir de catalyseurs Ziegler-Natta.
Delisio John P.
Peet Robert G.
Borden Ladner Gervais Llp
Mobil Oil Corporation
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