PAPER AND CARDBOARD MANUFACTURE PROCESS

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...

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Bibliographische Detailangaben
Hauptverfasser:	MAJKL BARRI KHEHRD, GORDON CHEHN I. CHEHN
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON IMPREGNATING OR COATING OF PAPER MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Beschreibung
Zusammenfassung:	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