Patent ID: 7682488
Filing Date: 2010-03-23
Classification: D21F,D21H,Y10S,Y10T

Abstract:
1. A method of forming a cellulosic web comprising: (a) supplying to a headbox an aqueous stream comprising a major proportion of refined long fiber; (b) supplying to the aqueous stream a cationic strength adjusting agent and an anionic strength adjusting agent; (c) measuring the total anionic charge carried by the aqueous stream; (d) controlling the amount of the cationic strength adjusting agent and the anionic strength adjusting agent so that the net charge of the aqueous stream is maintained in the range of from less than about 0 to about −115 meq×10 (e) depositing the aqueous stream on a first moving foraminous support to form a web; (f) transferring the web to a second moving foraminous support; (f) compressively dewatering the web; (g) transferring the web to a Yankee cylinder to dry the web to a consistency of at most about 98%; and, (i) creping the web from the Yankee cylinder.