GASTIGHT PACKING MATERIAL Russian patent published in 2004 - IPC

FIELD: packing materials. SUBSTANCE: invention relates to gastight packing materials, particularly, to packing materials impervious to oxygen and containing, as base, high- tightness (i.e.greaseproof) paper with applied upper layer. Upper layer is latex-type polymeric coating applied to paper in form of water-base dispersion and dried. Latex type polymeric coating contains at least one of following materials: styrene/butadience, styrene/acrylate, acrylates, such as polyacrylates or polymethacrylates. Such coating, together with high-tightens paper, forms common article impervious to water, water vapors, grease and, especially, to gas. Proposed packing material, according to invention, is good barrier for microbes, such as yeast, must, bacteria, etc. EFFECT: ease of manufacture, ease of utilization. 6 cl, 3 dwg