Cryovac, Inc.

W. R. Grace Co.-conn.

Mendy Joyce Walden

Ray Ernest Patrick

Roberto Forloni

Paolo Ciocca

Livio Buongiorno

Luca Cerani

Solomon Bekele

A multilayer film has a first outer layer, an inner layer, and a second outer layer. The first outer layer comprises a homogeneous ethylene/alpha-olefin copolymer. The inner layer comprises a thermoplastic elastomer. The second outer layer comprises a second ethylene/alpha-olefin copolymer. The inner layer is between the first outer layer and the second outer layer, and is chemically different from the first outer layer and the second outer layer. The multilayer film has an O -transmission rate of from about 500 to 50,000 cc/m 24 hr STP, and a modulus of at least 60,000 psi. The multilayer film is especially useful for the packaging of O -sensitive products, such as produce. The high modulus of the film enhances its performance in form-fill-and-seal operations.

High modulus oxygen-permeable multilayer film, packaging process using same, and packaged product comprising same

A method of making the a multilayer, biaxially oriented, heat shrinkable thermoplastic film includes a layer having between 50 and 100 parts by weight ethylene/alpha-olefin C,-C,copolymer, and between 0 and 50 parts by weight of a polymer selected from polyolefin, and modified polyolefin, the layer having more than one melting point when detected by diffential scanning calorimetry according to ASTM D-3418; wherein the total thickness variation in the multilayer film is lower than &plusmn;10%.

Method for the manufacture of multilayer film

Multilayered, bioriented, heat shrinkable film, method for the

A multilayer film has a first outer layer, an inner layer, and a second outer layer. The first outer layer comprises a homogeneous ethylene/alpha-olefin copolymer. The inner layer comprises a thermoplastic elastomer. The second outer layer comprises a second ethylene/alpha-olefin copolymer. The inner layer is between the first outer layer and the second outer layer, and is chemically different from the first outer layer and the second outer layer. The multilayer film has an O.sub.2 -transmission rate of from about 500 to 50,000 cc/m.sup.2 24hr STP, and a modulus of at least 60,000 psi. The multilayer film is especially useful for the packaging of O.sub.2 -sensitive products, such as produce. The high modulus of the film enhances its performance in form-fill-and-seal operations.

High modulus oxygen-permeable multilayer film

A multilayer film suitable for packaging produce comprises a core layer comprising a blend of ethylene butyl acrylate copolymer and very low density polyethylene; and two outer layers comprising a blend of ethylene alpha olefin copolymer having a density of at least about 0.916 grams per cubic centimeter, and ethylene vinyl acetate copolymer.

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Pelzer, SC, United States of America

Ray Ernest Patrick