METHOD OF PAPER PRODUCING Russian patent published in 1994 - IPC

FIELD: paper industry. SUBSTANCE: method involves addition of cellulose fiber to the paper mass and, possibly, filler and binder containing cation-active reagent and anion-active sol of aluminium silicate or sol of silicic acid modified with aluminium following by forming of paper cloth and drying. Polyacrylamide is used as a cation-active reagent at concentration 0.025-1.5% of dry raw mass. Anion-active sol is used at concentration 0.025-1.5% of dry raw mass. Paper mass used has pH value 4-10. EFFECT: improved method of paper making. 3 cl, 13 tbl