FIELD: process engineering.
SUBSTANCE: invention relates to multilayer flat or sleeve or film for food product packages. Sleeve or film is made by blow extrusion and stretched in two axes by triple blowing. It has the structure of layers including at least seven layers if seen from outside to inside. Note here that said layers are composed of: first outside layer made of PET, second outside layer of adhesion promoter, third outside layer made of ionomer, fourth outside layer of adhesion promoter, first outside layer of PVA or modified polyamide (MXD6), sixth outside layer of adhesion promoter and seventh outside layer of polyolefin.
EFFECT: reliable protection against oxygen and steam ingress, sufficient mechanical strength, good optical properties, high heat resistance and degree of shrinkage.
11 cl
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