Headbox for a paper machine or similar

Details Headbox for a paper machine or similar Headbox for a paper machine or similar

D - Textiles, Paper

21

F

92/17.1

D21F 1/06 (2006.01)

Patent

CA 1308592

ABSTRACT OF THE DISCLOSURE A headbox features in the machine-wide suspension channel, following in the flow direction of the suspension, a tubular distributing grid, an equalization channel, a turbulence generator, and a nozzle. Connected to the suspension channel is a device for dispensation of diluting liquid into the suspension. The amount of diluting liquid is adjustable across the machine width in contingence on the position of the basis weight cross profile variation in the produced paper web. The diluting liquid is dispensed directly before a choking point of the turbulence generator, into the suspension channel, in order to thereby prevent hydraulic disturbances, specifically cross flows in the suspension flow in the nozzle.

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