What are the food packaging materials?
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Food packaging generally uses soft packaging (plastic), usually based on materials that can resist oxygen and water, preserve fragrance and freshness. Most of the inner composite materials have good thermal sealing, can directly contact with food, the outer composite materials have good printability and puncture resistance, of course, more complex ones.
General barrier materials: EVOH. PVDC. PA. AL Coating. etc.
The inner layer is usually CPP, PE.
The outer layer is PP, PET, PA and so on.
