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Ethylene acrylic acid copolymer. EAA is a copolymer of ethylene and acrylic acid. lts ionic nature allows for excellent adhesive bonding to metal foil and other polar surfaces. EAA's adhesive and toughness qualities are taken advantage of in high performance multi-layer laminates.

Ethylene-Ethyl Acrylate (EEA). The copolymerization of ethylene with ethyl acrylate produces an ethylene acid copolymer. The polymers are produced with varying percentages of acrylate content, most typically between 15 and 30%. EEA is compatible with all olefin polymers and often is blended with these to modify properties. EEA is used in hot-melt formulations.

Ethylene-Methyl Acrylate (EMAC). The copolymerization of ethylene with methyl acrylate produces an ethylene copolymer, one of the most thermally stable of the olefin copolymers. The polymers are produced with varying percentages of methyl acrylate content, most typically between 1 8 and 24% of the structure. Alone or in blends, it has found applications in film, extrusion coating, sheet, laminating, and co-extrusion.

Ethylene-Vinyl Acetate copolymer, Much softer and clearer than LDPE or LLDPE and has lower melt temperature. Its melt temperature goes down, while its softness increases with increasing vinyl acetate (VA) content. EVA resins with 2-18% VA content are used for cast and blown packaging films.

Ethylene-Vinyl Alcohol copolymer, used in co extruded plastic films to improve oxygen barrier properties. It is, however, a poor water vapour barrier. Even its otherwise excellent OTR, (oxygen transmission rate) is sensitive to high humidity, therefore, for packaging applications, it is usually the core layer of co extruded plastic films, where it is shielded from moisture by protective layers of polyethylene. Its OTR also depends on its VOH (vinyl alcohol) content.

Extended Shelf Life (ESL)
Involves the pasteurization of a product and the transfer to a package in controlled atmosphere filler.

A material that is capable of being stretched under normal processing conditions.

Extrusion Lamination
A laminating process in which individual layers of multi-layer packaging materials are laminated to each other by extruding a thin layer of molten synthetic resin (such as polyethylene) between the layers. Used to fabricate high barrier or exceptionally durable film structures.