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Typically the PVOH coating is reverse printed and adhesive laminated to a sealant film, such as blown polyethylene (PE) or cast polypropylene (PP), to provide high oxygen protection for prolonged product shelf life. With an oxygen barrier level below 1cc/m²/day, this film delivers a barrier performance at the level of metalized polyester (PET) and typically higher than most other clear barrier solutions such as polyvinylidene chloride (PVdC) or ethylene vinyl alcohol copolymer (EVOH) coated or coextruded films. The surface energy of the PVOH coating helps ink receptivity and its good chemical barrier contributes to reduced solvent retention.
This clear barrier film uses solvent-free and chlorine-free coatings and provides protection from external contaminants and secondary packaging.
“The film’s excellent flavor and aroma barrier properties keep dry products tasting and smelling fresh,” says Laurent Chantraine, international market segment manager, ExxonMobil Chemical Films Business.