Paper machine wet forming section and method of operation thereo

Details Paper machine wet forming section and method of operation thereo Paper machine wet forming section and method of operation thereo

1994-08-23

1996-10-15

Czaja, Donald E.

Paper making and fiber liberation

Processes and products

Running or indefinite length work forming and/or treating...

162336, 162347, 162212, 162203, D21F 102

Patent

active

055650643

ABSTRACT:
In order to independently influence the dewatering performance of a wet forming section of a paper machine as well as the quality of a web produced by the machine, a paper machine head box is mounted on a swiveling device adapted to move a nozzle of the head box around a periphery of a forming cylinder. Two continuous-loop forming wires wrap about the forming cylinder and pulp is discharged through the nozzle into a gap formed by the two wires. A method of operation of the wet forming section includes the step of swiveling both the head box nozzle and an inlet roll (upon which one of the wires is wrapped) around the forming cylinder in a circular arc.

REFERENCES:
patent: 1928107 (1933-09-01), Lang
patent: 3726758 (1973-04-01), Parker et al.
patent: 3944465 (1976-03-01), Wolf
patent: 3997390 (1976-12-01), Kankaanpaa
patent: 4240872 (1980-12-01), Wahren
patent: 4790909 (1988-12-01), Harwood
Voith Drawing entitled "Duoformer CF" (not dated).
Voith Drawing entitled "Duoformer CFV" (not dated).

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