PAPER PULP FOR MANUFACTURING PARCHMENT-FORMING PAPER Russian patent published in 2000 - IPC

FIELD: paper- and-pulp industry. SUBSTANCE: paper pulp contains sulfate bleached deciduous cellulose and sulfate bleached coniferous cellulose. The former, containing 86-91% of alpha-cellulose, is mainly prepared from aspen wood or from mixture thereof with birch wood, or from mixture of aspen, birch, and alder woods. Parchment fabricated from such paper base is applicable for packaging various foods, dressing materials, medicinal industry ware, and other products requiring grease- and moistureproof packages. EFFECT: improved structural homogeneity of parchment and its greaseproofness. 3 cl, 2 tbl