Patent ID: 6048438
Filing Date: 2000-04-11
Classification: D21H

Abstract:
A method for increasing retention of fiber and filler and improving the drainage of water from a papermaking furnish during the formation of a cellulosic sheet which comprises:A. Adding to the furnishi. from about 0.003 to about 1.0% by weight based on total solids in the furnish of a phenolic enhancer selected from the group consisting of: phenol-formaldehyde resins, tannin extracts, naphthol-formaldehyde condensates, poly(para-vinyl phenol) and mixtures thereof, and,ii. from about 0.003 to about 0.5% by weight based on total solids in the slurry of an anionic flocculant; and then,B. Forming the cellulosic sheet whereby the retention of fillers and fiber on the sheet is increased, and the drainage of water from the sheet is improved.