Features & Test Data of PVA Coated Barrier Films
Barrier Film with PVA Coating Is a Driver of Mono-material Recyclable Packaging
PVA coated barrier film is to coat a layer of transparent polyvinyl alcohol (PVA) on the based films of different thickness (like BOPP, PET, NY, CPP, PE and other plastic films). PVA coating makes the materials perform good barrier to O2, N2, CO2 and other gas or small molecule volatiles, which is mainly used to improve the gas resistance performance of flexible packaging materials and plays a protective role in the contents with high fat and strong aroma, and easy to oxidation and deterioration.
Oxygen Resistance Performance of PVA Coated Barrier Films as follow：
Chart One: Oxygen Resistance Performance of Different PVA Coated Barrier Films
The data shows that, when barrier film with PVA coating is stored at room temperature for up to half a year and then aging at high temperature and humidity for a week, its OTR is almost the same. No matter what kind of based films, the OTR can be maintained within 3.5, performing good oxygen resistance and anti-aging.
