Headbox for a paper machine

Details Headbox for a paper machine Headbox for a paper machine

1994-07-12

1996-08-27

Czaja, Donald E.

Paper making and fiber liberation

Processes and products

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

162336, 162338, 162343, D21F 106

Patent

active

055497926

ABSTRACT:
A headbox for a paper machine is characterized by having: at least one machine-wide channel region which defines a main direction of flow; a region for the production of turbulence; a plurality of feed lines distributed over the machine width and discharging into the headbox channel region; an adjusting device in each feed line for controlling the quantity of flow; an angle .alpha. between the main direction of flow and the feed line; and the angle .alpha. being selected in such a manner that, regardless of the amount fed by the feed line, the total volumetric flow in the region directly downstream of the feed line remaining constant.

REFERENCES:
patent: 4897160 (1990-01-01), Wolf et al.
patent: 4898643 (1990-02-01), Weisshuhn et al.
patent: 4909904 (1990-03-01), Kinzler
patent: 5196091 (1993-03-01), Hergert
patent: 5316383 (1994-05-01), Begemann et al.

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