发明名称 |
Calender with pivotally displaceable roll |
摘要 |
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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申请公布号 |
US5329844(A) |
申请公布日期 |
1994.07.19 |
申请号 |
US19910774460 |
申请日期 |
1991.10.10 |
申请人 |
VALMET PAPER MACHINERY INC. |
发明人 |
KOIVUKUNNAS, PEKKA;HONKALA, JUHA;TURUNEN, RISTO;NISKANEN, JUHANI;KORHONEN, VILLE;PIRINEN, TIMO |
分类号 |
D21G1/00;D21G9/00;(IPC1-7):B30B15/34;B30B3/04;D21G1/02 |
主分类号 |
D21G1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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