B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/08 (2006.01) B29C 47/06 (2006.01) B29C 47/70 (2006.01)
Patent
CA 2374642
A multilayer film comprising: a stack of recurring units wherein each recuring unit has at least one extruded microlayer of a first thermoplastic material and further wherein the first thermoplastic material forms a barrier against oxygen wherein the film has a total thickness of between 10 and 2500 µm. If more than one microlayer is contained within each unit, then the microlayers may be coextruded together. Specifically, the barrier microlayer may be selected from among EVOH, polyketones, PA6, MXD6, PVDC, LCP, polyvinyl alcohol ("PVOH") or any other like barrier material against oxygen.
L'invention concerne un film multicouche comprenant une pile d'unités récurrentes, chaque unité possédant au mois une microcouche extrudée d'un premier matériau thermoplastique. Ce matériau forme une barrière contre l'oxygène, ledit film possédant une épaisseur totale comprise entre 10 et 2 500 µm. Si chaque unité comprend plus d'une microcouche, ces microcouches peuvent être coextrudées. La microcouche barrière contre l'oxygène peut être sélectionnée, de manière spécifique, à partir de EVOH, polycétones, PA6, MXD6, PVDC, LCP, alcool polyvinylique ("PVOH") ou tout autre matériau barrière analogue.
Fillon Bertrand
Jupin Alain
Kaas Roger L.
Mueller Chad David
Tournier Sandrine
Cebal S.a.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Pechiney Plastic Packaging Inc.
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