Method and device for heating a roll

Details Method and device for heating a roll Method and device for heating a roll

D - Textiles, Paper

21

G

D21G 1/02 (2006.01) D21F 7/06 (2006.01) D21G 9/00 (2006.01)

Patent

CA 2371715

A device for heating a roll in a paper or paperboard machine or in a finishing machine for paper or paper- board comprises a profiling induction heater (5) which is arranged to heat the roll (3) with a power dependent on the location of the point to be heated in the axial direction of the roll, and a non-profiling induction heater (4) which, to provide basic heating, is arranged to heat the same roll (3) with a heating power which is substantially even over the width of the roll (3). The profiling induction heater (5) and the non-profiling induction heater (4) are placed in the same support structure (1) outside the roll (3). The roll (3) is a calender roll.

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