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A brief introduction to Composite Packaging

On the basis of the development of the packaging industry, the packaging of articles has also been correspondingly developed.  From simple paper packaging to single-layer plastic film packaging, to the widespread use of composite materials.  The composite film enables the packaging contents to have moisturizing, fragrant, beautiful, fresh-keeping, light-proof, anti-infiltration, and extended shelf life, and thus has been rapidly developed.


Composite materials are two or more materials that are combined together by one or more composite processes to form a functional composite.  Generally, it can be divided into a base layer, a functional layer and a heat seal layer.  The base layer mainly functions as aesthetics, printing, and moisture resistance.  Such as BOPP, BOPET, BOPA, MT, KOP, KPET, etc.; functional layer mainly acts as barrier, protect from light, such as VMPET, AL, EVOH, PVDC, etc.; heat seal layer and packaged goods are in direct contact, adaptability and penetration resistance Properties, good heat sealability, and functions such as transparency, opening, etc., such as LDPE, LLDPE, MLLDPE, CPP, VMCPP, EVA, EAA, E-MAA, EMA, EBA, etc.  The following is a brief description of the development, development and status quo of the inner layer of composite flexible packaging materials.

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