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US 4,284,672 AGranted
Flexible packaging composite comprising an outer polyamide layer, an intermediate metal foil layer and an interior heat-sealable layer
AssigneeChampion International Corporation
InventorNathan Stillman
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Abstract
A laminated packaging film useful in producing such items as pouches and containers for liquids, comprises an outer layer of balanced biaxially oriented thermoplastic polymer, a middle layer of flexible metal foil, an inner layer of heat-sealable, rubber modified high density polyethylene, or ethylene copolymer and an adhesive layer between the middle and inner layers. The pouches and containers formed by this film are exceptionally strong, durable and flexible.
Claims8
A composite, flexible packaging film consisting essentially of
- an outer layer of balanced biaxially oriented thermoplastic polymer;
- a middle layer of flexible metal foil affixed to one surface of said outer layer;
- an inner layer of a heat-sealable ethylene copolymer or rubber-modified high-density polyethylene affixed to a surface of said middle layer opposite said outer layer;
- and
- a first adhesive layer between said middle and inner layers.
2 more elements
Dependencies are inferred from the claim text.