Paper making and fiber liberation – Processes and products – With measuring – inspecting and/or testing
Patent
1983-10-31
1985-02-26
Alvo, Steve
Paper making and fiber liberation
Processes and products
With measuring, inspecting and/or testing
73159, 250561, 356 1, D21F 700, G01N 2186, G01V 904
Patent
active
045016429
ABSTRACT:
Method of paper tension control to maintain the frequency and amplitude of paper flutter. 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 et al.
patent: 4160694 (1979-07-01), Futcher
patent: 4174237 (1979-11-01), Henning, Jr.
Alvo Steve
Champion International Corporation
Jones William W.
Sommer Evelyn M.
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