PROCEDURES FOR PRODUCING A THERMAL SEALABLE COMPOSITE POLYMERIC FILM, THERMAL SEALABLE COEXTRUDED COMPOSITE POLYMER FILMS, USING A COMPOUND FILM, SEALED CONTAINER AND FOOD PRODUCT

摘要

"processes for producing a thermally sealable composite polymeric film, co-extruded, thermally sealable composite polymeric films, use of a composite film, sealed container and packaged food product." a thermally sealable co-extruded composite polymeric film comprising a substrate layer comprising a first co-polyester material having, on one surface thereof, a thermally sealable layer comprising a second co-polyester material in which: (i) the first and second co-polyester materials are different from each other; (ii) the substrate layer copolyester comprises an aromatic dicarboxylic acid and a saturated aliphatic dicarboxylic acid of formula cnh2n (cooh) 2 wherein n is 2 to 8: (iii) the thermally sealable layer comprises one or more waxes; and (iv) the composite film is shrinkable or thermoformable; and the use thereof as packaging film, particularly as or in the manufacture of a thermally sealable lid forming film to a receptacle containing a food product.