Multilayer barrier structures, methods of making the same and packages made therefrom
AssigneeCoveris Flexibles US LLC
InventorsMichael J. Douglas, Duane H. Buelow, Chad D. Mueller, Robert J. Blemberg, Roberto Pascual Castellani
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Abstract
Multilayer structures, methods of making the same and packages made therefrom are provided. The multilayer structures are useful for packaging bone-in meat or other like products. More specifically, the multilayer structures have sufficient rigidity and strength to contain bone-in meat or other like products, while also maintaining good oxygen barrier properties. In addition, multilayer structures can easily seal to themselves or to other structures. Moreover, the multilayer structures are biaxially oriented and heat-shrinkable.
Claims30
1-40. (canceled)
A method of packaging a bone-in meat product, comprising:
- obtaining a multilayer structure comprising:
- a first polyamide layer;
- a barrier layer disposed adjacent to the first polyamide layer, wherein the barrier layer comprises ethylene vinyl alcohol copolymer;
- a second polyamide layer disposed adjacent the barrier layer;
- and
- a sealant layer;
- wherein the multilayer structure does not comprise a double wall or patch;
- and
- heat shrinking the multilayer structure around a bone-in meat product.
A method of packaging a bone-in meat product, comprising:
- obtaining a multilayer structure comprising:
- an outer layer comprising polyethylene;
- a first polyamide layer;
- a barrier layer disposed adjacent to the first polyamide layer, wherein the barrier layer comprises ethylene vinyl alcohol copolymer;
- a second polyamide layer disposed adjacent the barrier layer;
- and
- a sealant layer;
- wherein the multilayer structure does not comprise a double wall or patch, and wherein the multilayer structure is biaxially oriented;
- and
- heat shrinking the multilayer structure around a bone-in meat product.
A method of packaging a bone-in meat product, comprising:
- obtaining a multilayer structure comprising:
- a first polyamide layer;
- a barrier layer comprising ethylene vinyl alcohol copolymer;
- a second polyamide layer;
- and
- a sealant layer;
- wherein the multilayer structure is biaxially oriented and does not comprise a double wall or patch, and wherein both the first polyamide layer and the second polyamide layer together comprise between 20% by volume and 80% by volume of the multilayer structure;
- and
- heat shrinking the multilayer structure around a bone-in meat product such that a bone of the bone-in meat product protrudes from the meat and contacts the multilayer structure.
A package comprising a multilayer structure and a bone-in meat product, the multilayer structure comprising:
- a first polyamide layer;
- a barrier layer disposed adjacent to the first polyamide layer, wherein the barrier layer comprises ethylene vinyl alcohol copolymer;
- a second polyamide layer disposed adjacent the barrier layer;
- and
- a sealant layer;
- wherein the multilayer structure does not comprise a double wall or patch;
- and
- wherein the multilayer structure is heat shrunk around the bone-in meat product.
Dependencies are inferred from the claim text.