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US 4,161,953 AGranted
Method of puffing tobacco tissue
AssigneeAmerican Brands, Inc.
InventorEugene Glock
Life of this patent
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Abstract
Tobacco tissue is puffed by admixing with it hot water, preferably in the form of droplets, in amounts which are substantially completely absorbed by the tobacco in five minutes or less and thus cause puffing of the tobacco cell walls, and freeze drying the resulting tobacco to retain its puffed condition.
Claims3
A method for puffing tobacco tissue which consists essentially of:
- (A) admixing tobacco tissue with hot water at a temperature of at least about 70.degree. C. to the boiling point thereof, said hot water being added in an amount such that substantially all the hot water is absorbed by the tobacco tissue within a maximum period of five (5) minutes, said tobacco tissue being puffed by the absorbed hot water;
- (B) evaporatively freeze-drying the puffed tobacco tissue of step (A) under subatmospheric pressure;
- and
- (C) recovering tobacco tissue having a retained puffed condition free of an objectionable amount of tackiness caused by hydroscopic extractives on the surface of the tobacco tissue.
1 more element
Dependencies are inferred from the claim text.