Thermally stable vinylidene chloride copolymer containing a processing aid and extruded vinylidene chloride copolymer Flexible packaging film

摘要

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 of low molecular weight. The conventional stabilizer/plasticizer combination of expoxy 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 4.57 micron (0.18 mil).