Method for controlling the temperature of the mantle of a...

Details Method for controlling the temperature of the mantle of a... Method for controlling the temperature of the mantle of a...

D - Textiles, Paper

21

G

92/4

D21G 1/00 (2006.01)

Patent

CA 1263044

ABSTRACT OF THE DISCLOSURE A method for controlling the transverse thickness profile of paper or other web-like product by controlling temperature, including the axial temperature profile, of the mantle of a roll forming a nip with another roll in the manufacture of the paper or other web-like product includes forming a layer of heat transfer liquid on the inner surface of the mantle under the effect of the centrifugal forces generated by the rotation of the mantle, the layer of heat transfer liquid being divided into separate annular sections, and controlling the temperature of the heat transfer liquid layer of each of the sections. A roll in accordance with the invention includes a cylin- drical outer mantle rotatably mounted at its axial ends, a stationary inner shaft situated within the mantle and partitions for dividing a layer of heat transfer liquid formed on the inner surface of the mantle into a plurality of separate annular sections. The tempera- ture of the heat transfer liquid layer of each of the sections is controlled through the circulation of the heat transfer liquid of each section or through the provision of heat transfer elements in respective sections.

478183

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