Apparatus for paper tension control by measuring the frequency a

Details Apparatus for paper tension control by measuring the frequency a Apparatus for paper tension control by measuring the frequency a

1982-09-23

1985-01-29

Alvo, Steve

Paper making and fiber liberation

Apparatus

Automatic control

162263, 162273, 73159, 250561, 356 1, D21F 700, G01N 2186, G01V 904

Patent

active

044964285

ABSTRACT:
A noncontacting sensor means is mounted adjacent a portion of the paper path in a paper manufacturing apparatus. The sensor means detects flutter in a paper web travelling across the paper path. The tension in the paper web can be determined from the frequency and amplitude of the flutter. By adjusting the tension in the paper web to maintain the flutter within a predetermined range of frequency and amplitude, the tension in the paper web can be maintained at a desired level.

REFERENCES:
patent: 3379390 (1968-04-01), Eastcott
patent: 3721376 (1973-03-01), Christian
patent: 4160694 (1979-07-01), Futcher
patent: 4174237 (1979-11-01), Hemming, Jr. et al.
patent: 4335603 (1982-06-01), Lucke

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