Calender system for decoupling sheet finish and caliper control
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United States of America Patent
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Nov 17, 1992
Grant Date -
N/A
app pub date -
Sep 6, 1989
filing date -
Sep 6, 1989
priority date (Note) -
Expired
status (Latency Note)
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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.
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