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US 2014/0370211 A1Published application
Carbon dioxide gas permeable packaging film
AssigneeProlamina Midwest Corporation
InventorsSeyed Hesamoddin Tabatabaei, Jeffrey P. Sesolak
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Abstract
A carbon dioxide permeable packaging film providing moisture barrier, sealability, and flex-crack resistance characteristics and is ideal for use in packaging of carbon dioxide respiring food products, such as Swiss cheese, to increase shelf life thereof
Claims21
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 a moisture barrier core layer effective to limit passage of moisture 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 to control oxygen and carbon dioxide permeation;
- and
- a sealant layer disposed on the second surface of the barrier layer, the sealant layer configured to provide a hermetic seal at high packing speed upon being heat sealed with a like sealant layer of an aligned packaging film.
1 more element
A method of manufacturing a moisture 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 a moisture 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 a moisture barrier core layer effective to limit passage of moisture 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 and to control oxygen and carbon dioxide permeation;
- 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.