Tobacco – Tobacco treatment – Puffing
Patent
1996-08-09
1999-06-01
Weiss, John G.
Tobacco
Tobacco treatment
Puffing
131296, 406195, 406173, A24B 318
Patent
active
059080329
ABSTRACT:
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.
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European Search Report dated Dec. 15, 1997.
Barnes Russell Dean
Beard Hoyt Sturdivant
Guy Keith Rowan
Laurence Ricky Harris
Poindexter Dale Bowman
Anderson Charles W.
R.J. Reynolds Tobacco Company
Weiss John G.
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