Barrier Layers in Packaging
Offer Specific Protection

Coextrusion Multilayer StructureFor food packaging, barrier layers within packaging add shelf life with refined and specific oxygen, aroma, and flavor barrier properties. Common barrier layers are ethylene vinyl alcohol (EVOH), metallized films, and aluminum foil. Due to its exceptional chemical resistance and oxygen barrier properties, EVOH is commonly layered with polyethylene (PE) and polypropylene (PP)and used within laminate structures. Interestingly, EVOH is water-sensitive; the layers of PE and PP protect EVOH from water, and PE provides an excellent sealability. The barrier properties of EVOH can be leveraged throughout the entire food distribution chain. 

Read More of this article from Food Technology Magazine and the Institute of Food Technologists (IFT)

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