Roll with heated mantle and method

Details Roll with heated mantle and method Roll with heated mantle and method

1987-02-10

1988-07-19

Goldberg, Howard N.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29124, 29125, 29130, 100155R, 162205, B30B 300, D21F 1100

Patent

active

047575824

ABSTRACT:
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 cylindrical 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 temperature 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.

REFERENCES:
patent: 3643344 (1972-02-01), Strube
patent: 4394793 (1983-07-01), Pav et al.
patent: 4476637 (1984-10-01), Justus et al.
patent: 4498383 (1985-02-01), Pav et al.
patent: 4535230 (1985-08-01), Brieu
patent: 4542593 (1985-09-01), Viitanen et al.
patent: 4625637 (1986-12-01), Pav et al.
patent: 4639990 (1987-02-01), Schiel et al.

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