FIELD: food industry.
SUBSTANCE: invention relates to technology of manufacturing food packaging materials, in particular plane or tubular shells of films. Shell of film has layered structure with at least five and preferably at least seven layers. One of layers is made from polyvinyl alcohol, which layer can be disposed between two polyamine layers. Other layers can be made from polyolefins and contain adhesion enhancers.
EFFECT: enhanced barrier properties of packaging materials, improved size stability, and tightness of layers.
10 cl
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