Valmet Corporation

Metso Paper Inc.

Risto Vainio

Markku Kyytsönen

Harri Kuosa

Vesa Ijas

Rob Stapels

Jouko Meronen

Markku Kirvesmaki

Pasi Kakkonen

A paper machine roll, in particular for a soft calender or supercalender, which includes a metal frame, roll ends, and shafts. The frame is coated with a polymer coating over at least a middle area or central region thereof while lateral regions may optionally remain uncoated. In order to equalize a difference in temperature between the roll ends and the optionally non-coated lateral regions of the metal frame, on one hand, and the coated central region area of the roll, on the other hand, an arrangement for equalizing the difference in temperature is provided by heating the roll ends and the optionally non-coated lateral regions of the metal frame.

Paper machine roll with heated ends in a soft calender or supercalender

Growing community of inventors

Tuusula, Finland

Risto Vainio