Valmet Paper Machinery Inc.

Timo Viitanen

Timo Kiema

Kari Sipi

Karl Sipi

The invention concerns a method in calendering, wherein one or several pairs of rolls are employed through which the web to be calendered runs. One roll in each pair of rolls is a hard roll which is a heated metal roll, and the other roll in each pair of rolls is a roll provided with a resilient coating. In the method, the face of the roll with a resilient coating is also heated to a high temperature, advantageously to the same temperature as the heated metal roll. The invention also concerns a roll used in the method as well as the use of the method and of the roll.

Method of calendering a paper web

A calender comprises at least one pair of rolls through which a web to be calendered runs. One roll in each pair of rolls is a hard roll which is a heated metal roll, and the other roll in each pair of rolls is a roll provided with a resilient coating. The face of the roll with the resilient coating is also heated to a high temperature, advantageously to the same temperature as the heated metal roll.

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Jokela, Finland

Timo Viitanen