FIELD: textiles, paper.
SUBSTANCE: restraint system, which is added to the flow of paper pulp for the production of paper or cardboard, comprises a water-soluble cationic polymer and nano-cellulose. The components of the restraint system are added sequentially, first the water-soluble cationic polymer is added to form a flocculant precipitate. Then the mass is exposed to shearing forces for destruction of floccules and nano-cellulose is added in an amount of less than 1% by weight of dry matter of the paper pulp.
EFFECT: invention enables to improve the filler retention and dewatering during the production of paper or cardboard.
13 cl, 3 ex, 4 tbl
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