Method of controlling basis weight of a cylinder board machine

Details Method of controlling basis weight of a cylinder board machine Method of controlling basis weight of a cylinder board machine

1976-01-13

1977-10-11

Bashore, S. Leon

Paper making and fiber liberation

Processes and products

With measuring, inspecting and/or testing

162253, 162258, 162259, 162DIG6, 162DIG11, D21F 106, D21F 108

Patent

active

040533530

ABSTRACT:
A method for the control of basis weight of a sheet material made from liquid stock controls the consistency of liquid stock flowing to a flow box by a consistency feedback loop, and varies the level of liquid stock in the flow box to effect a change in the flow of dry fiber to the sheet former. Level is maintained in a midrange and any level called for outside of midrange is handled by adjusting consistency.

REFERENCES:
patent: 3650891 (1972-03-01), Dahlin
patent: 3661701 (1972-05-01), Al-Shaikh
patent: 3703436 (1972-11-01), Rice
patent: 3711687 (1973-01-01), Stout et al.
patent: 3711688 (1973-01-01), Stout et al.
patent: 3847730 (1974-11-01), Doering
Roberts, "Some Plain Talk on Digital Computers," Pulp and Paper, Aug. 12, 1968, pp. 32-37.

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