Roll for use in calenders and the like

Details Roll for use in calenders and the like Roll for use in calenders and the like

D - Textiles, Paper

21

G

92/4

D21G 1/00 (2006.01) D21F 7/06 (2006.01) D21G 1/02 (2006.01) F16C 13/00 (2006.01)

Patent

CA 1268372

ROLL FOR USE IN CALENDERS AND THE LIKE ABSTRACT OF THE DISCLOSURE A calender roll wherein the flexible shell is supported by a row of primary hydrostatic bearing elements serving to transmit first forces toward the nip of such roll with a second roll and wherein the shell is further acted upon by a row of secondary hydrostatic bearing elements which generate second forces opposing the first forces. The rate if fluid flow through the secondary bearing elements is regulated with a view to conform the temperature of the shell along the nip of the two rolls to a preselected pattern. To this end, the compensator of a computer in the fluid pressure regulating unit ensures that pressure changes are distributed among the primary and secondary bearing elements with a view to match each change of the first forces by an equal change of the second forces. The temperature of the fluid is regulated only ahead of the regulating unit. The compensator cooperates with the secondary bearing elements to ensure that the temperature of the shell can be changed along the nip without altering the temperature of the fluid.

507808

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