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materials,narrowterms,including oxygen barrier properties and water vapor barrier properties.Oxygen barrier properties especially for foods that contain fat,protein plays akey role in food shelf life,it is because the food in fat and other ingredientsprone to oxidation in the presence of oxygen conditions,deterioration,so like fatcontent of foods such as cooking oil,snacks,meat,moon cake and so must have acertain oxygen barrier properties of packaging materials,in order to ensure theshelf life of food during the deterioration does not occur,therefore,foodpackaging materials,has a very important meaning oxygen permeability decreases.Volkswagen is one of the favorite drinks of beer,and in consumption is a hugeglobal demand for packaging materials is also considerable market prospect.Currently the.