Papermaking using cationic starch and carboxymethyl cellulose or

Details Papermaking using cationic starch and carboxymethyl cellulose or Papermaking using cationic starch and carboxymethyl cellulose or

1988-09-02

1991-10-29

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

162173, 162183, D21H 1729

Patent

active

050613464

ABSTRACT:
A process of making paper by forming a paper furnish comprised of cellulosic fibers or cellulosic fibers and mineral filler material suspended in water, depositing the furnish on a papermaking wire, and forming a sheet out of the solid components of the furnish while carried on the wire, the improvement wherein there is mixed into the furnish, prior to its being deposited on the wire, about 0.50 to 5 percent of cationic starch (based on the dry weight of total solids in the furnish) followed by about 5 to 20 percent of a water soluble carboxymethyl) cellulose (based on the weight of the cationic starch).

REFERENCES:
patent: 2949397 (1960-08-01), Werner et al.
patent: 3790514 (1974-02-01), Economon
patent: 4295933 (1981-10-01), Smith
patent: 4385961 (1983-05-01), Svending et al.
patent: 4388150 (1983-06-01), Sunden et al.
patent: 4643801 (1987-02-01), Johnson
patent: 4710270 (1987-12-01), Sunden et al.
Casey, Pulp and Paper, 3rd Ed., vol. III (1981), pp. 1490-1494, 1506-1508.

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