| 摘要 |
A pair of calender rolls have the web to be calendered directed to wrap only about 90 DEG in travelling on one of the rolls into the nip of the rolls and then to wrap only about 90 DEG on the other of the rolls after leaving the nip. Pressure of the nip is variable. Additional variable nips may be provided by means of rolls located in nip relation to the first two rolls to engage the web about 90 DEG from the nip of the first two rolls. Automatic sheet threading is provided for. Provision is made for applying liquid solution to the web in the calender.
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