METHOD OF INCREASING PAPER STRENGTH BY USING NATURAL GUMS AND DRY STRENGTH AGENT IN THE WET END

摘要

The invention provides a method of improving dewatering efficiency, increasing sheet wet web strength, increasing sheet wet strength and enhancing filler retention in a papermaking process The method improves the efficiency of drainage aids or wet web strength aids or wet strength aid by coating at least some of the filler particles with a natural gum and with a material that prevents the filler materials form adhering to those additives. The drainage additive or wet web strength additive or wet strength aid holds the cellulose fibers together tightly and is not wasted on the filler particles.

主权项

1. A method of papermaking comprising filler, the method comprising the steps of:
providing filler particles and cellulose fiber stock, treating either the filler particles or the cellulose fiber stock with a composition comprising at least one natural gum, treating the cellulose fiber stock with a wet web strength additive, combining the filler particles and cellulose fiber stock, and forming a paper mat from the combination; wherein the cellulose fiber stock comprises a plurality of cellulose fibers and water, and the resulting paper has greater strength than the sum of the strength improvements that the natural gum composition and the wet web strength additive impart alone.