Method of controlling cross profile of properties of paper web

Details Method of controlling cross profile of properties of paper web Method of controlling cross profile of properties of paper web

1987-08-14

1989-10-17

Alvo, Steve

Paper making and fiber liberation

Processes and products

With measuring, inspecting and/or testing

162253, 162259, 162DIG6, 162DIG11, 364471, D21F 102, D21F 700, D21F 902

Patent

active

048744670

ABSTRACT:
A method of controlling the properties of a paper web across the feed direction, i.e., cross profile, in a paper machine. The cross profile is adjusted in a plurality of setting positions across the web. Proceeding from a measured cross profile and desired cross profile, an optimum correction in the setting positions is calculated, so that the cross profile is brought into agreement with the desired one. At this calculation the circumstance is utilized, such that a disturbance in the stock in a certain setting position results in a corresponding change in the cross profile of the paper web.

REFERENCES:
patent: 3610899 (1971-10-01), Dahlin
patent: 3767900 (1973-10-01), Chao
patent: 3989085 (1976-11-01), Crosby
patent: 4152202 (1979-05-01), Deligt

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