Wet part of a paper making machine

Details Wet part of a paper making machine Wet part of a paper making machine

1996-03-20

1999-09-28

Chin, Peter

Paper making and fiber liberation

Apparatus

White water or broke recovery, recirculation or treatment

162183, 162190, 162298, 162299, 162322, 162336, 162338, 162343, D21F 166

Patent

active

059581891

ABSTRACT:
A wet part of a paper making machine includes a distributor to which a main stream of a stock suspension is fed and which has a number of connections. The connections are connected by means of split stream lines to a machine-wide flow box which has a machine-wide slice nozzle (headbox). The split stream lines are connected (directly or indirectly) to the flow box. The slice nozzle is connected to at least one continuous web-forming screen. At least one collection trough is connected to the screen, as well as, optionally, to a backwater tank to accept the backwater trapped by the collection trough. Dilution water lines are provided to introduce backwater into the split stream lines to adjust the stock density of the split streams. The dilution water lines are connected directly to the collection trough.

REFERENCES:
patent: 3296066 (1967-01-01), Green et al.
patent: 3565758 (1971-02-01), Higgins et al.
patent: 4021295 (1977-05-01), Schmaeng
patent: 4387003 (1983-06-01), Meinecke et al.
patent: 4477313 (1984-10-01), Andersson
patent: 5316383 (1994-05-01), Begemann et al.
patent: 5401363 (1995-03-01), Begemann et al.
patent: 5505819 (1996-04-01), De Witt et al.
patent: 5573642 (1996-11-01), Begemann
patent: 5635033 (1997-06-01), Grossmann et al.
European Search Report for Application No. EP 96 10 2508, mailed Nov. 26, 1997.

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