Polyvinylidene chloride is made from ethylene and chloride,and approximately 70% of the chlorine used is derived from sodium chloride.
In this sense ,it can be said that PVDC is an ideal plastic for petroleum resource conservation.
As PVDC resins are high-density hydrophobic polymers,they provide an excellent barrier to oxygen,water vapor and aromas.
They also have heat-sealing and flame-retardant properties,oil and chemical resistance,and a variety of other features.
No other resin has such effective barrier properties to both oxygen and water vapor.
In addition ,these properties are unaffected by humidity.