Nalco Company

Albany International Corporation

James L Thomas

Rodney H Banks

Michael Robert St John

David Ira Weinstein

Zhiyi Zhang

Ross Gray

John M Hawes

David I Weinstein

Mary M Toney

Ross T Gray

Olivier Clot

An apparatus for and method of monitoring and optionally controlling the addition of one or more surface additives to a papermaking process via fluorometric means is disclosed.

Fluorometric method for monitoring surface additives in a papermaking process

The present invention provides an automatic control system, method and paper manufacturing machine using such control system for automatically controlling the amount of press section dewatering via the metered application of chemical dewatering agents applied to a paper web in a paper manufacturing process. The control system includes a feedback controller for controlling the amount of chemical dewatering agent applied to a paper web, and a monitoring device for obtaining a measurement of the moisture of the paper web exiting the press section.

System and method to control press section dewatering on paper and pulp drying machines using chemical dewatering agents

A method of operating a papermaking process containing a press section with at least one press nip is disclosed. The method comprises simultaneously performing the following steps: (a) providing a press media for said papermaking process that has a MFP size that is less than the MFP size of a press media that was originally supplied to said papermaking process; (b) adding an effective amount of one or more press sheet dewatering additives to said papermaking process prior to the last press nip of said papermaking process; (c) providing a sheet moisture ratio of a paper sheet entering a press nip of said press section to between about 2 to about 9; and (d) applying an optimum rate of pressure development at one or more press nips of said papermaking process, wherein said steps a, b, c, and d either: result in the production of a more uniform paper sheet without the reduction in paper solids exiting the press section that would be expected from performing a, c, and d, alone or in combination with one another; or result in the production of a more uniform paper sheet with an increase in solids content of said paper sheet exiting the press section.

Method of operating a papermaking process

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Heber Springs, AR, United States of America

James L Thomas