Roll having a hollow cylinder with internal ducts for the...

Details Roll having a hollow cylinder with internal ducts for the... Roll having a hollow cylinder with internal ducts for the...

D - Textiles, Paper

21

F

92/21.2

D21F 7/00 (2006.01) D21G 1/02 (2006.01) F16C 13/00 (2006.01)

Patent

CA 2022428

ABSTRACT OF THE DISCLOSURE A roll includes a rotatable hollow cylinder and a stationary crosshead extending lengthwise through the hollow cylinder to form an annular clearance space with the inner circumference of the hollow cylinder. Pressure exerted by a heat-transfer fluid that fills a longitudinal chamber in the clearance space generates a line pressure in the roll nip. The temperature of the fluid is raised to an appropriate level by a heat exchanger. In addition, internal ducts are provided in the hollow cylinder. The heat-transfer fluid is conducted through the internal ducts to control the temperature of the working circumference of the hollow cylinder.

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