Process for operating a calender

Presses – Methods

Reexamination Certificate

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Details

C100S041000, C100S15800R, C100S159000, C100S161000, C100S169000

Reexamination Certificate

active

06892631

ABSTRACT:
Process for operating and calender with a roll stack having a plurality of rolls, including two end rolls arranged to form a press plane and middle rolls arranged between the end rolls. The plurality of rolls includes at least one elastic roll. The process includes displacing at least one roll relative to the press plane at periodic intervals.

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patent: 4117054 (1978-09-01), Salo
patent: 4348952 (1982-09-01), Gooch
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patent: 9925921 (1999-05-01), None
Document “Calender Vibration—A Simulation Study and a Cure,” Tappi Journal, vol. 52, No. 7, Jul. 1969, pp. 1356 through 1361.
Document “Calender barring on paper machines—practical conclusions and recommendations,” Tappi Journal, vol. 58, No. 8, Aug. 1975, pp. 147 through 151.
Hermanski, “Barringbildung am Glättkalander einer Papiermaschinen,”Das Papier, No. 9, pp. 581-590, XP001118222 (1995).
Parker et al., “Analysis and Control of Calender Barring”,Paper and Pulp Canada, vol. 76, No. 10, pp. 89-91 (Oct. 1975).
Epton et al., “Glätterwerk-Barring und Naβpressenvibration”,Wochenblatt für Papierfabrikation17, pp. 616-622 (1981).
Parker, “Investigation of Vibrations and Disturbances”,Paper and Pulp Canada, vol. 80, No. 7, pp. 39-43 (Jul. 1979).
Huser et al., “Selbsterregte Schwingungen in Mehrwalzen-Glätterwerk”,Escher Wyss Mitteilungen ½, pp. 200-207 (1980).

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