Paper stock zeta potential measurement and control

Details Paper stock zeta potential measurement and control Paper stock zeta potential measurement and control

G - Physics

01

N

G01N 27/06 (2006.01) D21F 7/06 (2006.01) D21H 23/08 (2006.01)

Patent

CA 2329918

System and method for producing paper that employ an apparatus for measuring electrical characteristics of a fibrous composition. The apparatus comprises a plurality of conductivity (or resistance) detectors (26) each comprising a sensor that is sensitive to the conductivity (or resistance) and the proximity of the material (e.g., fibrous composition) to the sensor. Measurements from the apparatus relate to the zeta potential of the fibrous materials in the composition. The zeta potential profiles corresponding optimized configurations of the sheetmaking process can be employed to monitor and control the process.

L'invention concerne un système et un procédé de production de papier utilisant un dispositif permettant de mesurer les caractéristiques électriques d'une composition fibreuse. Ce dispositif comprend une pluralité de détecteurs (26) de conductivité (ou de résistance) dont chacun comporte un capteur sensible à la conductivité (ou à la résistance) et à la proximité du matériau (p. ex. composition fibreuse). Les mesures relevées par ce dispositif se rapportent au potentiel zêta des matières fibreuses de la composition. Les profils du potentiel zêta correspondant à des configurations optimisées du processus de fabrication de feuilles peuvent être utilisés pour surveiller et régler le processus.

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