Calender and method of operating the same

Details Calender and method of operating the same Calender and method of operating the same

1988-10-18

1991-07-09

Col, Philip R.

Presses

Methods

With heating or cooling

100 35, 100 47, 100 74, 100 93RP, 100162B, 100163R, 162206, 1623601, B30B 1534, B30B 304

Patent

active

050295217

ABSTRACT:
A calendar wherein a bottom roll and a deformable top roll flank one or more intermediate rolls is operated in such a way that the shape of the top roll is caused to conform to that of the adjacent intermediate roll before the nip of the top roll with the adjacent roll is narrowed. At least the top roll is heated to enhance the satinizing effect upon paper webs without unduly affecting the specific volume of treated material. It is further proposed to subject the bottom roll to preliminary deformation and/or to heat the bottom roll and/or one or more intermediate rolls.

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"Nipco-Walzen in Superkalandern", Stotz, 1986, pp. 976-983.
"Nip Load Uniformity and its control in Multi-Roll Calenders", Mueller et al., Apr. 1986, pp. 88-94.

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