What is PVC film popular science food preservation film?

For several years, it has been known that the use of certain types of plastic film can lead to the pollution of preserved food with harmful substances. The defendant used specific phthalates, a class of substances to be added to PVC to improve flexibility and moldability.

The risk of contamination is greater, which contains a significant amount of food lipids, among which phthalates are more soluble. The percentage of phthalates that can be contained in the film is governed by applicable laws, and several companies have very limited commercial base film polyethylene, where the PVC is completely absent.