MULTI-COMPONENT STRUCTURE DISTINGUISHED FOR HIGHER ADHESION BETWEEN COMPONENTS

摘要

FIELD: process engineering. ^ SUBSTANCE: invention relates to multi-component structure, for example multi-layer film that comprises at least first and second components with jointing layer arranged directly there between. Note here that jointing layer comprises at least one copolymer of olefine and unsaturated ether of carbonate acid and at least one photoinitiator wherein at least first component comprises vinylidene chloride polymer or combination of vinylidene chloride polymers that make prevailing ingredient with structure that features increased interlayer adhesion as measured in compliance with ASTM F904-98 at 93 C after irradiation by UV-radiation and as compared with interlayer adhesion prior to irradiating by UV radiation. Invention relates to method of preparing food that comprises enveloping food in multi-layer packing structure to be subjected to increased temperature sufficient for food preparation, and to method of gluing first layer to second layer in multi-layer film that comprises extruding first and second layer together. Note here that first layer comprises at least 80% of vinylidene chloride polymer and third layer arranged between said first and second layers. Third layer comprises basic polymer including olefine copolymer and that of unsaturated carbonate acid ether and at least one photoinitiator. Said method comprises also forming film and UV irradiation of the latter. ^ EFFECT: increased adhesion between first and second layer. ^ 18 cl, 5 tbl, 21 ex