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K.G.A. Gunnarson. Comments on head box control. In Papermaking Systems and their Control, Trans. of the IVth Fund. Res. Symp. Oxford, 1969, (F. Bolam, ed.), pp 513–516, FRC, Manchester, 2018.


The papers on this subject have described total head controlled by pneumatic valves as actuators. In the Chao & Sanborn paper, the authors mention that a time lag of 5 s or more must be tolerated when using these actuators. Ι suggest that somewhat more rapid control can be arranged by using a modern electronic controller.

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