Back to results
US 4,363,841 AGranted
Laminated packaging material
AssigneeChampion International Corporation
InventorJohn E. Snow
Life of this patent
Estimating the term…
Abstract
A laminated packaging material suitable for use in flexible containers for potato chips, corn chips, and the like, comprises (A) as an outer surface, a transparent sheet of nylon, polyester, cellophane, or polypropylene, (B) a coextruded laminate of pigmented polyethylene and ethylene acrylic acid copolymer, (C) a metallic foil, preferably aluminum, and (D) a heat-sealable polyolefin as an inner surface. Bags prepared from this packaging material have excellent moisture resistance and sealing properties.
Claims16
A laminated packaging material comprising
- (a) a transparent film of nylon, polyester, cellophane or polypropylene as an outer surface;
- (b) a coextruded laminate of pigmented polyethylene and an ethylene acrylic acid copolymer, said coextruded laminate affixed to said transparent film with the pigmented polyethylene adjacent the transparent film;
- (c) a metallic foil affixed to the ethylene acrylic acid copolymer of said coextruded laminate;
- and
- (d) a heat-sealable inner polyolefin containing layer affixed to said metallic foil.
2 more elements
Dependencies are inferred from the claim text.