Cooling of a paper web in a supercalender

Details Cooling of a paper web in a supercalender Cooling of a paper web in a supercalender

D - Textiles, Paper

21

G

92/4, 92/62

D21G 1/00 (2006.01)

Patent

CA 1276829

ABSTRACT The invention relates to a method for accomplishing smooth- ness and glaze to paper or board webs in a calender by leading a web through hot nips which are formed between cooperating rolls of different hardnesses and having adjus- table temperatures, and where a gradient calendering of the web based on the temperature difference between the web and the rolls is brought about. In order to increase the efficiency of the gradient calendering and in order to achieve a suitable temperature difference between the web and the heated rolls, the temperature of the web is arranged to be adjustable before the web enters the hot nip.

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