Hot air calender roll controller

Details Hot air calender roll controller Hot air calender roll controller

1985-01-28

1987-08-11

Feldman, Peter

Presses

With additional treatment of material

Cutting, breaking, piercing, or comminuting

100 47, 100162B, 100170, 29113AD, 219 1071, B30B 1534, B30B 1504

Patent

active

046853898

ABSTRACT:
A device for controlling the diameter of cylindrical sections of a rotating calender roll. The device comprises at least one nozzle which directs a jet of air against the calender roll. The flow of air from each nozzle remains approximately constant. Only the temperature of the jets change as heating elements associated with each nozzle are energized or deenergized. Thermal expansion or contraction, resulting from localized heating or cooling by the air jets, corrects local non-uniformities in the calender roll diameter.

REFERENCES:
patent: 2609477 (1952-09-01), Borda et al.
patent: 2981175 (1961-04-01), Goyette
patent: 3094606 (1963-06-01), Ferris
patent: 3177799 (1965-04-01), Justus et al.
patent: 3203678 (1965-08-01), Sawyer et al.
patent: 3668370 (1972-06-01), Pattison
patent: 3702912 (1972-11-01), Greenberger
patent: 3770578 (1973-11-01), Spurrell
patent: 4114528 (1978-09-01), Walker
patent: 4384514 (1983-05-01), Larive et al.
patent: 4425489 (1984-01-01), Pav et al.
patent: 4573402 (1986-03-01), Sharma et al.
Pulp & Paper Magazine Nov. 1984, pp. 54-55.
Pulp & Paper Magazine Dec. 1984 p. 157.

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