American National Can Company

Pechiney Emballage Flexible Europe

Mary E Shepard

Scott William Middleton

Robert J Blemberg

Keith Duane Lind

Jerry F Jesse

Deane E Galloway

John P Eckstein

Johnny Qiang Zheng

Mark E Nordness

Gregory K Jones

Gregory J Seeke

George H Walburn

A clear, multilayer polymeric film that is desirable for thermoforming applications. The film in its various embodiments include two inner layers of nylon and/or a core layer of ethylene vinyl alcohol or ethylene vinyl alcohol copolymer sandwiched between the two inner nylon layers. The film also has an outer layer of a heat sealable polymer and may also have an outer layer of nylon. The film is coextruded, blown into a tubular shape, oriented, and cooled by the method of tubular water quenching. The film has various improved physical properties over the prior art, including properties of 'memory', clarity, gloss and low haze.

Thermoformable multilayer polymeric film

A clear, multilayer polymeric film that is desirable for thermoforming applications. The film in its various embodiments include two inner layers of nylon and/or a core layer of ethylene vinyl alcohol or ethylene vinyl alcohol copolymer sandwiched between the two inner nylon layers. The film also has an outer layer of a heat sealable polymer and may also have an outer layer of nylon. The film is coextruded, blown into a tubular shape, oriented, and cooled by the method of tubular water quenching. The film has various improved physical properties over the prior art, including properties of &ldquo;memory&rdquo;, clarity, gloss and low haze.

Copolymers of ethylene and alpha olefins that have been formed by a polymerization reaction in the presence of a single site catalyst, such as a metallocene, are used as a film or as a layer in multiple layer films, including molecularly oriented and irradiated heat shrinkable films. Novel blends of the copolymers with other polymeric materials are disclosed and used as a film or a layer in a film particularly in molecularly oriented and heat shrinkable films. Bags made from the multiple layer films are especially useful for shrink packaging primal cuts of meat. Processes for the formation of flexible films and packages made therefrom are also disclosed.

Structures of polymers made from single site catalysts

A clear, multilayer polymeric film that is desirable for thermoforming applications. The film in its various embodiments include two inner layers of nylon and/or a core layer of ethylene vinyl alcohol or ethylene vinyl alcohol copolymer sandwiched between the two inner nylon layers. The film can also contain two nylon layers which are bonded together via an adhesive layer and not contain a core layer of ethylene vinyl alcohol. The film also has an outer layer of a heat sealable polymer and may also have an outer layer of nylon. The film is coextruded, blown into a tubular shape, oriented, and cooled by the method of tubular water quenching. The film has various improved physical properties over the prior art, including properties of 'memory', clarity, gloss and low haze.

A heat sealable, co-extruded multi-layer packaging film with a peelable, easy-opening feature, comprising a first layer which comprises a blend of polypropylene and a primary resin. The primary resin may comprise ionomers or other acid copolymers, ethylene vinyl acetate, low density polyethylene, or linear low density polyethylene. The first layer is disposed in contact with a second outer layer, which is a heat sealant layer, comprising polybutylene. The heat sealant layer separates from said first layer when force is applied to the heat seal. The film may be laminated to additional components, and may be heat sealed to itself or to a similar film to form a package.

Heat sealable packaging materials having a peelable, easy-opening feature

Improved polymer additive concentrate compositions used in nylon film layers. The improved concentrate comprises a carrier of a nylon polymer composition and the additive material. Preferred nylons include nylon 6; nylon 6,66; nylon 6,6; and combinations thereof. Preferred additives are antiblock agents and slip agents. The film layers may comprise a single layer nylon film, or may be part of a multiple layer composition. The films are susceptible to being used in making packaging.

Nylon carrier for polymer concentrate, and films and packages made with

Improved polymer additive concentrate compositions used in nylon film layers. The improved concentrate comprises a carrier of a nylon polymer composition and the additive material. Preferred nylons includes nylon 6; nylon 6,66; nylon 6,6; and combinations thereof. Preferred additives are antiblock agents and slip agents. The film layers may comprise a single layer nylon film, or may be part of a multiple layer composition. The films are susceptible to being used in making packaging.

Growing community of inventors

Oshkosh, WI, United States of America

Mary E Shepard