Apparatus for heating a dielectric web or sheet material or for

Details Apparatus for heating a dielectric web or sheet material or for Apparatus for heating a dielectric web or sheet material or for

1990-04-09

1991-12-24

Bennet, Henry A.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

219 1061R, 219 1061A, 34110, B10K 500

Patent

active

050740555

ABSTRACT:
The invention concerns equipment for drying of a web material (1) or for equalization of its moisture content by means of induction heating. The web is passed between the rolls in two or more pairs of rolls (2,3; 4,5; 6,7). High-frequency energy is passed to one of the rolls (2,4,6) in the pairs of rolls by means of a capacitive energy transfer member. One of the electrodes in this capacitive energy transfer member consists of the mantle of the roll (2,4,6) concerned. As the other electrode, a trough unit (8,9,10) which surrounds a part of the roll mantle is arranged. Alternatively, the trough unit may be substituted for by a rod electrode, which may be placed outside or inside the roll.

REFERENCES:
patent: 2766362 (1956-10-01), Kinder
patent: 3681558 (1972-08-01), Grassman
patent: 3761670 (1973-09-01), Slaats et al.
patent: 3931682 (1976-01-01), Candor
patent: 4773166 (1988-09-01), Candor
patent: 5024004 (1991-06-01), Jaeger

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