Thermoplastic multilayer barrier structures
OwnerMichael J. Douglas, Duane H. Buelow +3inventors
InventorsMichael J. Douglas, Duane H. Buelow, Chad D. Mueller, Robert J. Blemberg, Roberto P. Castellani
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Abstract
Multilayer structures useful for packaging products, such as bone-in meat, cheese and other like products, are provided. More specifically, the multilayer structures are useful for bone-in meat packaging, cook-in packaging, shrink film packaging and other like packaging. The multilayer structures are coextruded and have sufficient durability, strength, tear resistance and puncture resistance, while also providing oxygen barrier protection. In addition, the multilayer barrier structures are biaxially oriented so as to be heat-shrinkable around products.
Claims48
A multilayer structure for packaging bone-in meat comprising:
- a heat-sealant layer comprising a material selected from the group consisting of polyolefins, ionomers, and blends thereof;
- a first polyamide layer;
- and
- a barrier layer,
- wherein all layers are coextruded together to form said multilayer film and the multilayer structure is oriented.
Dependencies are inferred from the claim text.