FIELD: pulp-and-paper industry, in particular, production of paper and cardboard.
SUBSTANCE: method involves producing surface finished paper or cardboard Bw by applying aqueous solution Lw of surface finishing component W onto hydrophilic paper or cardboard sheet B, where W contains polyethylene glycol W1 with an average molar weight Mw≥1,500 or mixture of polyethylene glycol W1 and at least one additional finishing additive and/or receipt additive having concentration providing full water content in paper or cardboard in the range of 4-30 wt%; passing paper or cardboard sheet surface finished with aqueous solution Lw through smoothing rolls and drying. Substance for surface finishing of paper or cardboard is aqueous solution Lw of component W for surface treatment or component W and at least one non-finishing receipt additive F, wherein W contains polyethylene glycol W1 with an average molar weight Mw ≥ 1,500 and at least one additional finishing additive and/or receipt additive. Additive is selected from the group of antifoaming agents and agents for protecting from hazardous action of microorganisms, and finishing additive W3 containing at least one additive for increasing strength in wet state, with concentration of component W constituting ≥0.1 wt% and ≤ 70 wt%, and concentration of polyethylene glycol W1 constituting ≤50 wt%. Paper or cardboard is subjected to surface finishing process according to the above method. Method for producing of graphically treated paper or cardboard involves applying of at least one pattern of graphic paint onto paper base or cardboard base and drying. Base is surface finished paper Bw or surface finished cardboard Bw.
EFFECT: improved quality of paper and provision for avoiding of decrease in capacity and additional contamination of wastewater.
13 cl, 5 tbl, 11 ex
