METHOD OF PAPER OR CARDBOARD PRODUCTION AND PAPER OR CARDBOARD PRODUCED BY METHOD

摘要

FIELD: textile, paper. ^ SUBSTANCE: method relates to paper or cardboard production and can be used on pulp-and-paper industry. Part of paper pulp fiber is treated with a polymer at least within two stages. Paper pulp treated with the polymer is mixed with remaining non-treated paper pulp. The mixed paper pulp is dehydrated on a net conveyor for forming fibrous web. ^ EFFECT: increase of strength without negative effect upon paper or cardboard volume with decreasing quantity of adding polymers and enhancing economical efficiency of the process. ^ 14 cl, 4 dwg, 2 ex