Heatable roll for calendering or smoothing systems

Details Heatable roll for calendering or smoothing systems Heatable roll for calendering or smoothing systems

1995-03-16

1996-11-05

Cuda, Irene

Roll or roller

With heating, cooling, or heat transfer means

165 89, B23P 1500

Patent

active

055710662

ABSTRACT:
A heatable roll (2) for calendering, smoothing and similar systems and a method for operating the roll incorporating an inductively operating external heating system (9) and an internal heating system (13). The internal heating system is limited to the end sections of the roll. On reaching a preset temperature level at the roll ends, the heat output of the internal system can be reduced or preferably switched off. As a result, the heating-up period of the roll is shortened, the design of the roll is kept simple, and thermal stressing of the roll is reduced.

REFERENCES:
patent: 4229950 (1980-10-01), Fessenden
patent: 4658716 (1987-04-01), Boissevain
patent: 4964202 (1990-10-01), Pav
patent: 5074019 (1991-12-01), Link
patent: 5254070 (1993-10-01), Callhoff
patent: 5393959 (1995-02-01), Kitano et al.
patent: 5420395 (1995-05-01), Hyllberg et al.

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