Hot air calender roll controller
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United States of America Patent
Stats
-
Sep 6, 1988
Grant Date -
N/A
app pub date -
Jan 25, 1985
filing date -
Jan 25, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for controlling the diameter of cylindrical sections of a rotating calender roll. The device comprises at least one nozzle which directs a jet of air against the calender roll. The flow of air from each nozzle remains approximately constant. Only the temperature of the jets change as heating elements associated with each nozzle are energized or deenergized. Thermal expansion or contraction, resulting from localized heating or cooling by the air jets, corrects local non-uniformities in the calender roll diameter.
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