An outer layer of polyethylene terephthalate (PET) provides not only for the perfect optical properties (gloss and transparency) of the film, but also for heat resistance, which allows the sealing of the packages through the overlaps, without running the risk of sealing the packages together.
A polyamide layer (РА) procures for the film's excellent strength.
Ethylene vinyl alcohol (EVOH) ensures the high barrier to oxygen
An inner layer of polyethylene (РЕ) allows the film to be welded within a wide temperature range with the formation of a tight seal, and provides a barrier to water vapor (zero weight losses during storage).
High shrinkability of the film helps to show the packaged product in a most attractive way and to make it stand out against the other products in the shop window.
Low specific weight of the film (kg/m2) provides for the optimum product weight / packaging weight ratio.