Dielectric cross machine moisture control

Details Dielectric cross machine moisture control Dielectric cross machine moisture control

1989-02-17

1989-10-10

Paschall, M. H.

Electric heating

Metal heating

Of cylinders

219 1077, 219 1081, 219 1061R, H05B 654

Patent

active

048734071

ABSTRACT:
In a method for applying heat to a web, the web is subjected to dielectric heating in discrete segments, arranged transverse to the web, by modules containing pairs of electrodes. The heat thus generated can be used to vary the moisture and/or temperature profile. Each module has a built-in self modulating moisture leveler. Other properties of the web, which are varied by such process operations as wet pressing, drying, calendering, etc. and which themselves are influenced by the moisture/temperature of the web can thereby be also controlled by said dielectric heating in closed-loop fashion.

REFERENCES:
patent: 3470343 (1969-09-01), Bilbrough
patent: 3701875 (1972-10-01), Witsey et al.
patent: 4258241 (1981-03-01), Soworowski
patent: 4307276 (1981-12-01), Kurata et al.
patent: 4409455 (1983-10-01), Belcher et al.
patent: 4574413 (1986-03-01), Otting et al.
patent: 4621177 (1986-11-01), Pulkowski et al.

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