Calender in a paper or board machine

Details Calender in a paper or board machine Calender in a paper or board machine

D - Textiles, Paper

21

G

D21G 1/00 (2006.01) D21G 9/00 (2006.01)

Patent

CA 2053165

Abstract A calender in a paper or board machine comprises a calender frame, at least two soft-faced rolls mounted on the calender frame and at least one hard roll mounted on the calender frame in a manner that allows the hard roll to be displaced between a first position in which it forms calendering nips with the two soft-faced rolls and a second position in which it is spaced from the soft-faced rolls. During threading of the web, while the calender is in operation, the hard roll is shifted to its second position, the web is passed over the soft-faced rolls, and the hard roll is shifted back to its first position and brings the web into the nips between the hard roll and the soft-faced rolls.

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