METHOD AND APPARATUS FOR EXPANDING TOBACCO MATERIAL
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United States of America Patent
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Sep 27, 2013
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Mar 31, 2011
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Abstract
A tobacco material expansion method includes the steps of wetting and swelling a tobacco material by bringing the tobacco material into contact with a water vapor stream at 100 to 160° C., and drying the tobacco material by bringing the wetted swelled tobacco material into contact with a superheated water vapor stream at a temperature higher than that of the water vapor.
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