Cryovac, Inc.

W. R. Grace Co.-conn.

Daniel S Wilburn

Martin J Ecoff

Clifford A Kendrick

Tracie P Segura

A multilayer film is relatively thick has an oxygen transmission rate of at least 10,000 cc/mil/24 hour@STP. The film is particularly suited for the packaging of fresh seafood. The film has a first layer which is an outer film layer which serves as a heat seal layer, and a second layer which serves as a high O-transmission layer. The first layer has a thickness of from 2 to 20 percent of a total thickness of the multilayer film. The second layer comprises at least one member selected from the group consisting of: (i) ethylene/butyl acrylate copolymer, (ii) homogeneous ethylene/alpha-olefin copolymer having a density of from 0.86 to 0.91 g/cc; (iii) heterogeneous ethylene/alpha-olefin copolymer having a density of from 0.89 to 0.91 g/cc; (iv) ethylene/methyl acrylate copolymer having a methyl acrylate mer content of from 20 to 24 mole percent; (v) ethylene/vinyl acetate copolymer having a vinyl acetate mer content of from 10 to 30 mole percent; and (vi) styrene butadiene block copolymer. The at least one second layer having a thickness of from 80 to 98 percent of the total thickness of the multilayer film. The film is at least 1.5 mils thick. The invention also pertains to a bag made from the film, as well as a packaged product utilizing the film.

Thick shrink film having high oxygen transmission rate

A film, having two major surfaces, includes an outer layer including a copolymer of ethylene and a C.sub.3 to C.sub.10 alpha olefin, wherein at least one surface has a silicone coating of between 0.1 and 1.2 milligrams per square feet. Multilayer films can also be provided. Films with a combination of good machinability and ink adhesion are obtained. Films with good shrink properties, in combination with good machinability and ink adhesion, are also obtained.

Shrink film with good ink adhesion

An oriented thermoplastic film, comprising at least one layer comprising a thermoplastic polyolefin (TPO). Films of the present invention exhibit improved memory properties compared with conventional PVC and shrink films. The films are preferably heat shrinkable, and can comprise two or more layers in a multilayer construction.

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Simpsonville, SC, United States of America

Daniel S Wilburn