Using the existing coating machine, dry composite machine and other equipment of domestic flexible packaging enterprises, after coating PVA coating solution of only 0.5g/m2 ~ 0.8g/m2 (dry base) on the film with qualified surface tension (such as PET, BOPP, CPP, PE and other films), The oxygen permeability of the film is less than 2cm3/ (m2·24h·0.1MPa), or even less than 0.5cm3/ (m2·24h·0.1MPa). Obviously, the oxygen resistance of the product has been significantly better than the five-layer co-extruded film with EVOH as a barrier layer and PVDC high barrier coating film, which is close to the oxygen resistance of aluminum foil.
Advantages
1, high cost performance
The production cost of modified PVA coated high barrier film is much lower than the production cost of paper aluminum-plastic composite and aluminum-plastic composite structure packaging materials, and also lower than the cost of PVDC coated composite film.
2, excellent oxygen resistance
The modified polyvinyl alcohol (PVOH) composite film has good barrier property to oxygen, nitrogen, hydrogen and carbon dioxide, and its oxygen inhibition property is much better than PVDC composite film.
3, excellent perfuming performance
It can maintain the original flavor of the food in the bag for a long time, and at the same time, it can effectively prevent the odor outside the packaging material from entering the bag.
4, excellent environmental protection materials
PVA coating liquid is composed of carbon, oxygen, hydrogen and silicon, which can be degraded, recycled and reused, and does not produce toxic gases after combustion. It is an ideal packaging material.
ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.
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