Method for heating a roll and a heatable roll
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United States of America Patent
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Apr 11, 1995
Grant Date -
N/A
app pub date -
Feb 24, 1993
filing date -
Feb 24, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a method for heating a roll and a heatable roll for use in a paper machine, paper finishing machine, or equivalent. The roll is heated by a heating medium which is introduced into the roll interior through at least one of the ends of the roll. The heating medium acts upon the material of the roll mantle or the roll and is arranged to flow across the axial length of the roll. The heating medium is arranged to flow out of the roll through either one of the ends of the roll. The roll is provided with means by which the coefficient of heat transfer from the flowing heating medium to the material of the roll is increased in the flow direction of the heating medium.
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