| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to the technology of producing multilayer films which absorb oxygen and articles made from said films, having a coating with a well dispersed oxygen absorbent. The oxygen-absorbing composition contains iron powder particles with mean size of 1-25 mcm with a coating of at least one activating and oxidising powdered compound in form of solid organic and inorganic salts of alkali and alkali-earth metals, such as sodium chloride and sodium bisulphite. The particles are dispersed in a polymer resin by extrusion in a double-auger mixer. The composition is mixed with polymer granules in a solid state before melting. Granules of the polymer resin and iron powder with coating are preferably treated with a surfactant in dry state to ensure good dispersion. The extruded molten composition is granulated and kept in dry state to prevent premature activation.EFFECT: obtained films are used as parts of graphic design in form of a soft container having a graphic image.8 cl, 1 dwg, 3 ex |
