Improves barrier properties to increase shelf life or to protect product. Used as a barrier material in a coating form, a layer in lamination or as part of a coextruded structure for a rigid container.
A usually very thin transparent film with excellent resistance to acids' water' and organic solvents.
("polly-vanilla-deen") a thermoplastic polymer which can withstand higher temperatures than polyethylene; especially useful for covering utensils when microwaving foods; moisture-proof and transparent. (example: Saran Wrap [trade mark])