SWOLLEN TOBACCO MATERIAL MANUFACTURING METHOD

摘要

A swollen tobacco material manufacturing method in which a tobacco material TM is placed in a pressure vessel (11), and carbon dioxide (22) is then introduced into the same, the interior of the pressure vessel is pressurized up to a predetermined impregnation pressure, liquid carbon dioxide (21) is then supplied from the upper side of the tobacco material TM via a sintered metal plate (13) with the impregnation pressure retained, the interior of the pressure vessel (11) is filled with carbon dioxide gas produced by the evaporation of liquid carbon dioxide, the tobacco material is impregnated with carbon dioxide by cooling the tobacco material with evaporation latent heat, and the resultant carbon dioxide-impregnated tobacco material is swollen by bringing the same into contact with a high-temperature air current in an air current drier.