TOBACCO MOISTURE CONTROL SYSTEM AND METHOD

The amount of moisture removed by a dryer from a stream of tobacco formed by mixing a supply of cut rolled stems with a supply of laminae is controlled. Gauge means respond to the cut rolled stems and laminae fed to the dryer to derive signals respectively indicative of the moisture of the cut rolle...

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Bibliographische Detailangaben
Hauptverfasser:	FOWLER, RONALD J, KOENIG, DAVID M, FREEH, EDWARD J
Format:	Patent
Sprache:	eng
Schlagworte:	CIGARETTES CIGARS HUMAN NECESSITIES MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING ORCHEWING SMOKERS' REQUISITES SNUFF TOBACCO
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Beschreibung
Zusammenfassung:	The amount of moisture removed by a dryer from a stream of tobacco formed by mixing a supply of cut rolled stems with a supply of laminae is controlled. Gauge means respond to the cut rolled stems and laminae fed to the dryer to derive signals respectively indicative of the moisture of the cut rolled stems and laminae. The signals indicative of the cut rolled stems and laminae moisture are processed with a set point signal for the moisture of tobacco after emerging from the dryer to derive a feed forward component of a set point signal for the dryer drying rate. The cut rolled stem and laminae moisture indicating signals are processed differently from each other, as a function of the relative ability of the dryer to remove moisture from the cut rolled stems and laminae. A feed back component of the dryer drying rate set point signal is derived from a proportional-integral controller responsive to the moisture indication of the dried tobacco.