METHOD OF AND APPARATUS FOR EXPANDING TOBACCO

A method of and an apparatus for expanding tobacco, particularly tobacco impregnated with solid carbon dioxide are disclosed. The apparatus comprises an arcuate, generally C-shaped duct for conveying the tobacco material in a hot gaseous medium to sublimate the solid carbon dioxide and expand the to...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LAURENCE, RICKY HARRIS, GUY, KEITH ROWAN, STEWART, TONY DEAN, POINDEXTER, DALE BOWMAN, BEARD, HOYT STURDIVANT, BARNES, RUSSELL DEAN, WILHELM, DOUGLAS EDWIN, RICHARDSON, HAROLD EUGENE
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CIGARETTES CIGARS HUMAN NECESSITIES MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING ORCHEWING SMOKERS' REQUISITES SNUFF TOBACCO
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Beschreibung
Zusammenfassung:	A method of and an apparatus for expanding tobacco, particularly tobacco impregnated with solid carbon dioxide are disclosed. The apparatus comprises an arcuate, generally C-shaped duct for conveying the tobacco material in a hot gaseous medium to sublimate the solid carbon dioxide and expand the tobacco. The duct has a non-circular cross-section, preferably a rectangular cross-section, with a high width-to-depth ratio and an increasing depth from the inlet to an intermediate portion of the duct then a decreasing depth from the intermediate portion to the outlet of the duct. A winnower device infeeds the tobacco material into the duct adjacent the throat of a venturi section connected to the inlet of the conveying duct. A tangential separator with an adjustable baffle at the inlet thereof for controlling velocity in the separator is used to separate the expanded tobacco from the gaseous medium.