Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Patent
1996-04-12
1999-04-27
Thibodeau, Paul
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
428 349, 428218, 428220, 428515, 428516, 428522, 428910, B32B 2732, B65B 5300
Patent
active
058979417
ABSTRACT:
A film includes at least one layer comprising a blend of an ethylene polymer having a density of at least 0.925 grams per cubic centimeter, and an ethylene copolymer selected from the group consisting of ethylene/ester copolymer, and ethylene/alpha-olefin copolymer. The film is preferably substantially free from linear low density polyethylene. The film can be a monolayer or multilayer film, and can comprises a core layer comprising an ethylene polymer having a density of at least 0.925 grams per cubic centimeter; and one or more outer layers with the above described blend. At least one intermediate layer comprising an ethylene copolymer having a density of less than 0.925 grams per cubic centimeter can also be included. The film preferably has a thickness of less than 0.60 mils; a shrink force of less than 0.35 pounds in the longitudinal direction, and less than 0.30 pounds in the transverse direction; and a tensile modulus of at least 60,000 psi in the longitudinal direction, and at least 75,000 psi in the transverse direction. The film offers beneficial properties for packaging applications.
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Cryovac Inc.
Quatt Mark B.
Tarazano D Lawrence
Thibodeau Paul
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