Calender system for decoupling sheet finish and caliper control

Details Calender system for decoupling sheet finish and caliper control Calender system for decoupling sheet finish and caliper control

1989-09-06

1992-11-17

Hornsby, Harvey C.

Presses

Methods

With heating or cooling

100 74, 100 93RP, 162206, 162207, B30B 1534, D21G 100

Patent

active

051633655

ABSTRACT:
A system for at least partly decoupling the control of sheet finish and sheet caliper in a calender stack is disclosed. The system includes a heating device for heating the sheet with dry heat substantially immediately before the sheet is pressed by an upstream nip of the calender stack and a moisturizer for moisturizing the sheet substantially immediately before the sheet is pressed at a downstream nip of the calender stack. The sheet is moisturized without substantially altering the sheet temperature.

REFERENCES:
patent: 1291626 (1919-01-01), Parks
patent: 2291616 (1942-08-01), Fletcher
patent: 4370923 (1983-02-01), Schmidt
patent: 4642164 (1987-02-01), Hanhikoski et al.
patent: 4653395 (1987-03-01), Verkasalo
patent: 4786529 (1988-11-01), Boissevain

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