Jet-speed control in a multi-layer headbox

D - Textiles – Paper – 21 – F

Patent

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Details

D21F 1/02 (2006.01) D21F 9/00 (2006.01)

Patent

CA 2135163

2135163 9420678 PCTABS00033 The invention concerns a method of controlling the relative flow speed of the layers in a multi-layer headbox with laminae mounted torque-free between upper and lower lips which are stationary when in operation. The invention is characterized in that a difference in speed is produced between the individual layers by causing the static pressure to change differently in the different layers.

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