FIELD: paper- and-pulp industry. SUBSTANCE: pulp layer compositions are fed separately into flow distributors of pressure box, leveled, dispersed in the canals of flow section, and poured out before discharge slot. Composition of upper layer is supplemented by cationized starch in quantity 0.2-0.4% based on absolutely dry fiber and composition of lower layers with 0.1- 0.2 % of nonionic polyacrylamide. Mentioned additives vary colloid properties of pulps, in particular, they improve sheet formation quality, extend dehydration control ranges, enable change of assortment of produce on one machine without upgrading grid section. EFFECT: simplified technology and improved physico-chemical characteristics of products. 1 dwg
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