Freezable/microwaveable packaging films

B - Operations – Transporting – 32 – B

Patent

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B32B 27/32 (2006.01) B32B 27/00 (2006.01)

Patent

CA 2642278

A multi-layer freezable/microwaveable film having both low temperature resistance and high temperature resistant to withstand subzero freezer storage temperatures and microwave cooking temperatures. The freezable/microwaveable film includes a three-layer coextruded film having a polypropylene/alpha-olefin copolymer inner, heat sealable layer, an adjacent polypropylene or high density polyethylene core layer, and an outer polyethylene skin layer adjacent the core layer opposite the heat sealable layer, and further includes an outer protective layer laminated to the outer skin layer.

La présente invention concerne un film multicouche pouvant être congelé ou passé au micro-ondes, qui présente à la fois une résistance aux basses températures et une résistance aux températures élevées, ce qui lui permet de résister aux températures régnant dans un congélateur et aux températures de cuisson dans un micro-ondes. Le film pour congélation/micro-ondes inclut un film co-extrudé en trois couches comportant une couche interne thermocollable en copolymère polypropylène/alpha-oléfine, une couche de cAEur adjacente en polypropylène ou en polyéthylène haute densité, et une couche de peau externe en polyéthylène adjacente à la couche de cAEur et opposée à la couche thermocollable, et inclut également une couche externe protectrice laminée sur la couche de peau externe.

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