IP Library › Granted Patent US 6,893,672
Granted Patent B2
US 6,893,672 · App. 10/010,138 · Granted May 17, 2005

Peelable film and packaging made therefrom

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Quick Facts
Patent No.
US 6,893,672
App. No.
10/010,138
Granted
May 17, 2005
Kind
B2
Abstract

The present invention relates to a multilayer polymeric film structure and a food package made therefrom. Specifically, the present invention relates to a seven-layer non-EVOH structure having six layers of alternating nylon and adhesive, and a seventh layer of a heat sealable polymer. Either the sixth layer comprising the adhesive or the seventh layer comprising the heat sealable polymer may further comprise a polymer, preferably polybutylene, polypropylene and/or high density polyethylene, that may allow the film structure to be easily peelable when heat sealed. Moreover, the present invention relates to food packages made by the film structures having a easy-open peelable seal component contained therein.

Claims (19)

1. A frozen food package, said food package comprising:

a first coextruded multilayer polymeric film wherein said film comprises:

a first layer, said first layer comprising a polyamide;

a second layer, said second layer comprising an adhesive, said second layer disposed in contact with said first layer;

a third layer, said third layer comprising a polyamide, said third layer disposed in contact with said second layer;

a fourth layer, said fourth layer comprising an adhesive, said fourth layer disposed in contact with said third layer;

a fifth layer, said fifth layer comprising a polyamide, said fifth layer disposed in contact with said fourth layer;

a sixth layer, said sixth layer comprising an adhesive, said sixth layer disposed in contact with said fifth layer; and

a seventh layer, said seventh layer comprising a blend of polymers

wherein the first polymer is ethylene vinyl acetate copolymer and the second polymer is polybutylene, said seventh layer disposed in contact with said sixth layer and wherein said seventh layer of said first multilayer polymeric film is sealable to a second thermoformable multilayer polymeric film, and wherein the first multilayer polymeric film is easily peelable from the second multilayer polymeric film.

2. The frozen food package of claim 1 wherein said second multilayer polymeric film comprises:

a first layer, said first layer comprising a polyamide;

a second layer, said second layer comprising an adhesive, said second layer disposed in contact with said first layer;

a third layer, said third layer comprising a polyamide, said third layer disposed in contact with said second layer;

a fourth layer, said fourth layer comprising an adhesive, said fourth layer disposed in contact with said third layer;

a fifth layer, said fifth layer comprising a polyamide, said fifth layer disposed in contact with said fourth layer;

a sixth layer, said sixth layer comprising an adhesive, said sixth layer disposed in contact with said fifth layer; and

a seventh layer, said seventh layer comprising a heat sealable polymer or polymer blend wherein said polymer blend comprises linear low density polyethylene and ethylene vinyl acetate copolymer wherein said seventh layer is disposed in contact with said sixth layer, and

wherein said multilayer polymeric film does not contain an EVOH core layer.