Calender

Details Calender Calender

D - Textiles, Paper

21

G

92/4

D21G 1/00 (2006.01) D21G 1/02 (2006.01) D21G 3/00 (2006.01) F16C 13/00 (2006.01)

Patent

CA 1107550

ABSTRACT IMPROVEMENTS IN OR RELATING TO A CALENDER A calender has a polyurethane coated roll 10 and a co-operating steel roll 20 which together form a nip for treating a web of paper. The polyurethane coated roll 10 is cooled by means of a cooling fluid passing through a cooling channel 12 within the roll 10 to a temperature T which satisfies the formula Image where V is the velocity of the web being treated in metres/minute and P is the pressure applied to the web in kp/cm of roll length and T is the temperature at the surface of the roll 10 in degrees C.

337299

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