| 摘要 |
FIELD: pulp-and-paper industry. ^ SUBSTANCE: method involves preparing cellulose suspension; providing flocculation and draining of suspension on netted surface; molding and drying of resultant sheet. Flocculation of suspension is provided by introducing of water-soluble polymer selected from the group consisted of polysaccharide and synthetic polymer with characteristic viscosity of at least 4 deciliter/g. Repeated flocculation procedure is provided by adding of system including silicon-containing material and water-soluble polymer. According to one of versions, silicon-containing material is added before or simultaneously with water-soluble polymer. According to other version, water-soluble polymer is of anionic kind of polymers, which is added before introduction of silicon-containing material. ^ EFFECT: improved draining and holding procedures facilitating adequate conditions for paper and cardboard molding procedure. ^ 18 cl, 2 tbl, 4 ex |
