Carbon dioxide gas is used in this tobacco fluffing method. The tobacco temperature and the OV amount are regularized before the tobacco combines with the carbon dioxide gas. The thermodynamic process is observed during the glutting, which lets the controlled carbon dioxide gas condense on the tobacco. This liquid carbon dioxide vaporizes during the depressurisation, helping to cool the tobacco layer gradually. After glutting the tobacco, it can be fluffed immediately or it can be kept in the temperature of its outlet or lower in a dry atmosphere for later fluffing.
