Multiple layer packaging film
OwnerScott S. Super, Jerry F. Jesse +1inventors
InventorsScott S. Super, Jerry F. Jesse, Joseph C. Hsu
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Abstract
A multiple layer packaging film is based on three layers and wherein polyethylene terephthalate is one of the layers. All three layers are oriented. The three layers may be used as a stand-alone film, or may be combined with other layers to achieve additional beneficial properties. Desirably, the polyethylene terephthalate may be metallized, then laminated to a reverse printed layer of oriented polypropylene or polyester.
Claims18
A uniaxially oriented three layer film wherein all three layers are uniaxially oriented, said film comprising, in order, a first uniaxially oriented heat sealable layer, a second uniaxially oriented layer of a modified polyolefin or olefin copolymer adhesive, and a third uniaxially oriented layer of polyethylene terephthalate, said first, second, and third layers being bonded to each other at their respective layer interfaces without the use of intervening adhesives.
A multiple layer film comprising, in order, a first uniaxially oriented heat sealable layer, a second uniaxially oriented layer of a modified polyolefin or olefin copolymer adhesive, a third uniaxially oriented layer of polyethylene terephthalate, a fourth metallizing layer on said polyethylene terephthalate, a fifth polyethylene adhesive layer, and a sixth abuse resistant layer, said first, second, and third layers being bonded to each other at their respective layer interfaces without the use of intervening adhesives.
A multiple layer film comprising, a first uniaxially oriented heat sealable layer, a second uniaxially oriented layer of a modified polyolefin or olefin copolymer. a third uniaxially oriented layer of polyethylene terephthalate, a fourth polyethylene adhesive layer, a fifth layer of oriented polyester and a sixth metallizing layer, said first, second, third, and fourth layers being disposed in said film in the respective recited order, said sixth layer being disposed on a selected surface of a selected one of said third and fifth layers, said selected surface being the one surface of said selected layer which is adjacent said fourth adhesive layer, said first, second and third layers being bonded to each other at their respective layer interfaces without the use of intervening adhesives.
Dependencies are inferred from the claim text.