Heatable roll for use in calenders and the like

Details Heatable roll for use in calenders and the like Heatable roll for use in calenders and the like

B - Operations, Transporting

21

B

92/4

B21B 13/02 (2006.01) D21G 1/02 (2006.01) F16C 13/00 (2006.01) F16C 13/02 (2006.01)

Patent

CA 1329029

HEATABLE ROLL FOR USE IN CALENDERS AND THE LIKE ABSTRACT A calender roll wherein a cylindrical shell is rotatably mounted on a stationary carrier by way of bearings which are disposed in the end portions of the shell. The median portion of the shell is heated by a first heating device, and the end portions of the shell are heated by a discrete second heating device. The second heating device has channels which are provided in the end portions of the shell and/or indictive heaters which are adjacent to the exterior of the end portions of the shell. Alternatively or in addition to such expedients, the second heating device can include the bearings in the end portions of the shell; each such bearing includes or constitutes an axial or radial hydrostatic bearing which is heated by hydraulic fluid to thereby heat the respective end portion of the shell. The second heating device ensures that the effective length of the shell approximates or even matches the axial length of the shell. - 51 -

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