FIELD: paper-and-pulp industry.
SUBSTANCE: : process comprises preparation of paper pulp, flocculation of pulp, shear force-involving mechanical treatment of pulp, second flocculation of pulp, drainage of pulp on the screen to form sheet, and subsequent drying of sheet. Flocculation is carried out by adding water-soluble optionally having intrinsic viscosity above 3 dl/g. Polymer is further characterized by oscillation delta tangent value at 0.005 Hz above 1.1.
EFFECT: improved drainage and retention on moving screen, and formation process.
10 cl, 1 dwg, 4 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| PAPER AND CARDBOARD MANUFACTURE PROCESS | 2000 |
|
RU2247183C2 |
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| METHOD OF MANUFACTURING PAPER | 2005 |
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RU2347029C1 |
| COMPOSITIONS INDUCING FLOCCULATION OR THICKENING, AND PREPARATION AND USE THEREOF | 1997 |
|
RU2167894C2 |
