Tobacco – Tobacco treatment – Puffing
Patent
1989-12-29
1991-07-16
Millin, V.
Tobacco
Tobacco treatment
Puffing
131295, 131296, 131 352, A24B 318
Patent
active
050316443
ABSTRACT:
The invention is directed to a process for expanding tobacco wherein tobacco is impregnated with sulfur hexafluoride and thereafter heated in an expansion zone to liberate the sulfur hexafluoride and cause expansion of the tobacco. The process of the invention can provide substantial expansion of tobacco cut filler lamina without substantial generation of tobacco fines and employing substantially mild pressure of, for example, less than about 2,000 psi and with minimal effect on tobacco taste. The invention additionally provides an intermediate tobacco product comprising tobacco cut filler lamina impregnated with sulfur hexafluoride in a substantially pliable and unextracted condition.
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Millin V.
Myers Grover M.
R. J. Reynolds Tobacco Company
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