Processing roll apparatus and method for web drying

Details Processing roll apparatus and method for web drying Processing roll apparatus and method for web drying

1994-09-30

1996-10-22

Sollecito, John M.

Drying and gas or vapor contact with solids

Process

Gas or vapor contact with treated material

34119, 34125, F26B 300

Patent

active

055664733

ABSTRACT:
A processing roll adapted to engage paper or the like to heat and/or shape the same. The roll has a cylindrical side wall and defines a interior condensing chamber for steam. The interior surface of the roll is formed with longitudinal grooves which slope away from the longitudinal axis toward a central location. The steam condensates in the chamber, collects in the grooves, and flows toward a center location where the condensate is siphoned out and removed from the chamber. Improved heat transfer is achieved, and greater uniformity of heat is accomplished at the outside surface.

REFERENCES:
patent: 1406991 (1922-02-01), MacKay
patent: 1453113 (1923-04-01), Hutchins
patent: 1623017 (1927-03-01), Christoph
patent: 3914875 (1975-10-01), Schiel
patent: 3948283 (1976-04-01), Asfura et al.
patent: 4674196 (1987-06-01), Means
patent: 4781795 (1988-11-01), Miller
patent: 4933073 (1990-06-01), Jonkers et al.

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