Method and apparatus for leveling the cross-direction profile of

Details Method and apparatus for leveling the cross-direction profile of Method and apparatus for leveling the cross-direction profile of

1977-11-30

1979-05-01

Bashore, S. Leon

Paper making and fiber liberation

Processes and products

With measuring, inspecting and/or testing

162208, 162252, 162253, 162258, 162263, 162310, 162DIG11, 239543, 239551, D21F 108

Patent

active

041522028

ABSTRACT:
The characteristic profile of a paper web is adjusted on the fourdrinier by means of a number of fluid spray stations positioned across the papermachine. Each spray station is provided with two or more fan spray nozzles of different flow capacity oriented to impact the pond with fluid along a common line. Flow to each nozzle is binary controlled with respective binary command, full flow valves. By discrete manipulation of valve selection, total flow rate to the web may be adjusted without flow throttling and consequent impact velocity variations.

REFERENCES:
patent: 1989435 (1935-01-01), Wallguist
patent: 2951007 (1960-08-01), Lippke
patent: 3072146 (1963-01-01), Gizeski
patent: 3407114 (1968-10-01), Springuel
patent: 3437098 (1969-04-01), Stark et al.
patent: 3587969 (1971-06-01), Gromme
patent: 3989085 (1976-11-01), Crosby
Halliday & Resnick; Physics Parts I & II; pp. 443-445, John Wiley & Sons, Inc.; N. Y., 1966.

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