Extruded vinylidene chloride copolymer flexible packaging film

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428516, 428518, 428520, 428910, 2641761, 524109, 524306, B32B 2708, C08L 2708, C08K 515

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active

050305115

ABSTRACT:
This invention relates to films made from vinylidene chloride copolymers. Specifically, this invention relates to a method and composition for lowering the oxygen permeability and enhancing the thermal stability and enhancing the melt shear stability of packaging films having a layer of vinylidene chloride copolymer film by adding a processing aid such as an epoxy resin to vinylidene chloride copolymer of low molecular weight. The conventional stabilizer/plasticizer combination of epoxy resin and 2-ethyl-hexyl diphenyl phosphate may be employed with the vinylidene chloride copolymer. The layer of vinylidene chloride copolymer can be as thin as 0.18 mil.

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U.S. Monoplex S-75, C. P. Hall Company.

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