Process for operating a calendar

Details Process for operating a calendar Process for operating a calendar

2005-06-07

2005-06-07

Tentoni, Leo B. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

C264S175000

Reexamination Certificate

active

06902691

ABSTRACT:
Process for operating a calender having a roll stack formed by a plurality of rolls resting against one another in a press direction along a stack plane, at least one of the rolls including an elastic surface. The process includes determining whether a barring pattern has occurred on at least one of the rolls, determining a wavelength of the barring pattern, and displacing at least one of the rolls based upon the wavelength.

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Document “Calender Vibration—A Simulation Study and a Cure,” Tappi Journal, vol. 52, No. 7, Jul. 1969, pp. 1356 through 1361.
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M, Hermanski, “Barringbildung am Glattkalander einer Papiermaschine”Das Papier, Nr. 9, 1995, pp. 581-590.

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