Apparatus for heating a sheet- or web-like material

Details Apparatus for heating a sheet- or web-like material Apparatus for heating a sheet- or web-like material

1982-09-30

1984-03-06

Paschall, M. H.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

219388, 219497, 219502, 432 59, 432227, H05B 102

Patent

active

044356374

ABSTRACT:
An apparatus for heating a sheet- or web-like material during its transport through a processing machine, comprises at least one infrared heating panel facing the path of transport of the material. The apparatus is provided with a controlling circuit for controlling the heat emission of the heating panel in response to a control signal generated by a control means. The heating panel is switched off if the transport speed of the material becomes smaller than a minimum speed by means of a monitoring circuit which can switch off the controlling circuit, said monitoring circuit being coupled to a detector means reacting to the transport speed. The monitoring circuit may further comprise at least one zone detector means reacting to the presence of the material within a given zone extending transversely to the transport direction of the material on either side of the desired path of transport, wherein the monitoring circuit switches off the controlling circuit if the material leaves the zone.

REFERENCES:
patent: 3558853 (1971-01-01), Schluntz
patent: 3679518 (1972-07-01), Andler et al.
patent: 4032817 (1977-06-01), Richmond
patent: 4049947 (1977-09-01), Bestenreiner et al.
patent: 4228345 (1980-10-01), Stricker et al.
patent: 4366369 (1982-12-01), Hagen et al.

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