PROCESS AND APPARATUS FOR PRODUCING REGENERATED TOBACCO MATERIAL

摘要

According to the present invention, a regenerated tobacco material is produced by: extracting a natural tobacco material with an extractant to obtain both a tobacco extract which contains desired components and undesired components and an extraction residue; bringing the tobacco extract into contact with microbubbles; removing the precipitate which has separated out in the tobacco extract, by the contact with the microbubbles; subjecting the tobacco extract from which the precipitate has been removed, to a fractionation operation using an ultrafiltration membrane or a reverse osmosis membrane to obtain both a first fraction which contains the desired components and in which the content of the undesired components has been rendered low and a second fraction in which the content of the desired components has been rendered low and the content of the undesired components has been rendered high; preparing a regenerated-tobacco web which contains the extraction residue; and adding the first fraction to the regenerated-tobacco web.