Process and apparatus for monitoring dewatering in a wet...

Paper making and fiber liberation – Processes and products – With measuring – inspecting and/or testing

Reexamination Certificate

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Details

C162S263000, C162S253000, C162S252000, C162S360200, C162S049000, C700S127000

Reexamination Certificate

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07115188

ABSTRACT:
Process and apparatus for monitoring dewatering in a wet end section of a web production machine. The process includes measuring water flowing into the wet end section, measuring water flowing out of the wet end section, measuring conductivity of the wet web entering the wet end section, measuring conductivity of the water flowing into wet end section, measuring conductivity of water flowing out of the wet end section, and determining a water balance from the measured quantities, which is indicative of dewatering in the wet end. The apparatus is arranged to perform the process.

REFERENCES:
patent: 3185617 (1965-05-01), Justus
patent: 3268390 (1966-08-01), Ely
patent: 3655980 (1972-04-01), Bossen
patent: 3724957 (1973-04-01), Tamate et al.
patent: 3860168 (1975-01-01), Byrd et al.
patent: 4752356 (1988-06-01), Taggert et al.
patent: 5093795 (1992-03-01), Lewis
patent: 5262955 (1993-11-01), Lewis
patent: 5286348 (1994-02-01), Perin
patent: 5330621 (1994-07-01), Visuri et al.
patent: 00/08462 (2000-02-01), None

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