Details
Material hierarchy: Polymer - Thermoplastic - Vinyl Plastic
Polyvinylidene chloride is abbreviated PVdC. Copolymers of vinylidene chloride with vinyl chloride or other monomers, these materials exhibit exceptional barrier resistance to oxygen, carbon dioxide, water, and many organic solvents. Care in processing PVdC includes keeping melt temperatures below 400°F and using corrosion-resistant metals wherever hot resin contacts the equipment surface. PVdC coatings are applied to containers to prevent gas transmission but have to be removed before the packages are recycled.
Common Applications
PVdC is made into monolayer films (Saran) for food wrap and medical packaging, and it also is used in coextruded film and sheet structures as a barrier layer.