PAPER-MAKING STOCK FOR PREPARATION OF BASE OF PARAFFINED PAPER Russian patent published in 1999 - IPC

FIELD: wood-pulp and paper industry; may be used in preparation of paraffined paper base used for external wrapping of confectionery. SUBSTANCE: paper-making stock contains bleached sulfate coniferous cellulose, filler in the form of titanium dioxide and polyacrylamide and sizing agent in the form of modified starch in the following ratio, wt.%: filler in the form of titanium dioxide, 5-10; modified starch, 0.8-1.8; polyacrylamide, 0.03-0.15; bleached sulfate coniferous cellulose, the balance. Quality of paper is improved due to its increased mechanical strength with preservation of printing properties, index of relative elongation of paper increases. EFFECT: higher elasticity due to flexibility of fibers themselves. 2 tbl