Recent development of PET in packaging box manufacturers Excellent barrier performance PET material itself has excellent barrier properties, which is more than enough to meet most food packaging requirements. Only when packaging perishable food, its oxygen barrier properties need to be slightly improved. Here, active oxygen barrier materials are often used instead of passive barrier materials. The most commonly used and long-term used are iron-based deoxidizers or cobalt-catalyzed deoxygenation reactions. The principle is to use another polymer to react with oxygen, such as special polyamides and polyolefins.
