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What does EVOH mean?

The meaning of EVOH film is as follows:

 
The most significant characteristic of EVOH resin is its gas barrier effect. It is used in packaging structures to improve flavor and quality retention by preventing oxygen penetration. In the use of inflatable packaging technology, EVOH resin effectively retains the carbon dioxide or nitrogen used to protect the product. Because of the hydroxyl groups in the molecular structure of EVOH resin, EVOH resin has hydrophilicity and hygroscopicity. When the moisture is adsorbed, the barrier performance of the gas will be affected.
 
 
EVOH
 
In the field of packaging, EVOH is made into composite film intermediate barrier layer, which is used in all hard and soft packaging; in the food industry, it is used for aseptic packaging, hot cans and cooking bags, and for packaging dairy products, meat, juice cans and condiments; in non food, it is used for packaging solvents, chemicals, air conditioning structural parts, gasoline barrel lining, electronic components, etc. In terms of food packaging, EVOH plastic containers can completely replace glass and metal containers. Many domestic aquatic companies use nine layer coextrusion film vacuum packaging for seafood export. At the same time, EVOH stretching orientation is also studied in foreign countries. The gas barrier performance of the new EVOH film is three times higher than that of the existing high-performance non stretched EVOH film.

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