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US 2014/0370212 A1Published application
Packaging film with superior seal, barrier, and flex crack resistance
AssigneeProlamina Midwest Corporation
InventorsSeyed Hesamoddin Tabatabaei, Jeffrey P. Sesolak
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Abstract
A packaging film having enhanced barrier properties, sealability, and flex-crack resistance characteristics and is ideal for use in packaging of food products, such as chunk cheese, to increase shelf life thereof.
Claims23
A packaging film comprising:
- a barrier layer having a first surface and a second surface opposite the first surface, said barrier layer comprising a coextruded multilayer structure having an oxygen barrier core layer effective to limit passage of oxygen through the packaging film;
- an abuse layer disposed on the first surface of the barrier layer, said abuse layer effective to resist flex cracking of the packaging film;
- and
- a sealant layer disposed on the second surface of the barrier layer, the sealant layer configured to provide a hermetic seal upon being heat sealed with a like sealant layer of an aligned packaging film.
1 more element
A method of manufacturing an oxygen barrier packaging film comprising the steps of:
- coextruding a multilayer barrier structure having a first surface and a second surface opposite the first surface, said multilayer barrier layer comprising an oxygen barrier core layer;
- attaching an abuse layer to the first surface of the multilayer barrier structure;
- and
- forming a sealant layer on the second surface.
1 more element
A food package, comprising:
- opposing front and back panels of a polymer packaging film;
- a barrier layer of the polymer packaging film having a first surface and a second surface opposite the first surface, said barrier layer comprising a coextruded multilayer structure having an oxygen barrier core layer effective to limit the passage of oxygen through the packaging film;
- an abuse layer of the packaging film disposed on the first surface of the barrier layer, said abuse layer effective to resist flex cracking of the packaging film;
- a sealant layer of the packaging film disposed on the second surface of the barrier layer, the sealant layer configured to provide a hermetic seal upon being heat sealed with a like sealant layer of an aligned packaging film;
- and
- a hermetic seal between at least a portion of the front and back panels of the polymer packaging film.
3 more elements
Dependencies are inferred from the claim text.