METHOD OF INCREASING ADVANTAGES OF REINFORCING MATERIALS FOR PRODUCING PAPER AND CARDBOARD Russian patent published in 2017 - IPC D21H17/28 D21C5/02 D21H21/28 D21H21/36 

FIELD: textile and paper.

SUBSTANCE: invention relates to a method of producing paper, cardboard or thin cardboard. Method involves the following steps: (a) conversion of a water cellulose material containing starch into a paper mass, (b) prevention of microbial degradation of at least part of the starch in processing the water cellulose material containing starch by one or more biocides, and (c) introduction of a dry and/or wet reinforcing polymer into the cellulose material. Method envisages: (A) determination of properties of water phase of the cellulose material selected from electric conductivity, redox potential, pH value, ATP concentration and free starch concentration, (B) making paper, cardboard or thin cardboard using the said method, (C) determination of the same property (A) after time interval Δt, comparing the value determined at step (B) with the value obtained at step (A) and (D) adjustment of the biocide dosage at step (b) and/or the reinforcing polymer dosage at step (c).

EFFECT: invention ensures reduction of electric conductivity of the water cellulose material with higher efficiency of reinforcing polymers due to reduction of their consumption.

15 cl, 5 dwg, 7 tbl, 4 ex