Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With testing – sampling or analyzing
Reexamination Certificate
2006-07-18
2006-07-18
Fortuna, Joseé A. (Department: 1731)
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With testing, sampling or analyzing
C162S055000, C162S027000
Reexamination Certificate
active
07077930
ABSTRACT:
The invention relates to a method of controlling quality of pulp. Pulp formed in mechanical defibering of wood is screened into at least two fractions, the accept that has passed the screening phase being forwarded for further use and the reject that did not pass the screening being removed from the screening phase. The invention comprises determining flow amount and consistency of the pulp supplied to the screening phase and, correspondingly, of the reject removed therefrom, and calculating a passage ratio of the reject and the supplied pulp by means of the flow amounts and consistency values verified through the measurement, and adjusting the screening phase according to said passage ratio.
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Copy of International Search Report for PCT/FI02/00186 completed May 30, 2002.
Copy of Official Action for Finnish Priority Appl. No. 20010482 dated Sep. 28, 2001.
Ämmälä Ari
Jussila Tero
Niinimäki Jouko
Alston & Bird LLP
Fortuna Josée A.
Metso Paper Inc.
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