FIELD: process engineering.
SUBSTANCE: invention relates to producing coextruded biaxially-oriented thermosetting polyether films to be used for sealing packges. Proposed film comprises base layer from polyether with characteristics viscosity exceeding 0.75 and outer thermo sealing layer glued directly to base layer from amorphous polyether or crystalline polyether with fusion temperature not exceeding that of base layer. Proposed method comprises coextrusion of said polymers, cooling coextrudate and biaxial orientation at temperature not exceeding 130°C. Package comprises container, product and aforesaid film to seal said product.
EFFECT: ease of manufacture, expanded applications.
14 cl, 5 tbl, 6 ex
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