| 摘要 |
<p>The invention concerns a calender, comprising a calender frame (11,12) and a stack of rolls mounted on the frame and consisting of four rolls (13,14,15, 16) fitted one above the other, in which stack the rolls placed one above the other can be fitted in nip contact with one another so as to calender the paper web (W) or equivalent in said nips (N1,N2,N3,). The stack of rolls in the calender is composed of three variable-crown rolls (13,14,16), of which rolls the roll mantle (17) of at least one roll (13) can be displaced in relation to the roll axle (18) in the direction of the nip plane by means of loading devices (19) fitted inside said roll, as well as of one heatable roll (15), which is fitted between two variable-crown rolls (14,16) in the stack of rolls. The roll is preferably arranged so that, in the stack of rolls, the lowest, i.e. the first roll (13), the second roll (14), and the topmost, i.e. the fourth roll (16) are variable-crown rolls and that the third roll (15) in the stack of rolls is a heatable roll. <IMAGE></p> |
