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US 4,726,385 AGranted
Method of fabricating an all-tobacco cigarette controlling tar delivery and an all-tobacco cigarette
AssigneeThe American Tobacco Company
InventorRichard D. Chumney, Jr.
Life of this patent
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Abstract
This invention relates to a method of controlling the "tar" delivery of cigarette smoke and more particularly to the method of controlling "tar" delivery of the non-filter cigarette while maintaining resistance to draw and other parameters of the cigarette at acceptable levels.
Claims5
An all-tobacco cigarette in which combustion of the tobacco creates "tar" which "tar" migrates during puffing to the mouth-end for delivery to the smoker comprising
- (a) a first paper-wrapped column of cut tobacco forming the lighted-end of the cigarette;
- (b) a second paper-wrapped column of tobacco tandemly-positioned with respect to the first column forming the tip-end column of the cigarette;
- (c) overwrap tipping paper overwrapping the second column and a portion of the first column to secure the two columns together;
- (d) ventilation holes of selected number and size in the overwrap at a predetermined distance from the mouth end of the cigarette;
- and
- (e) tobacco in the second column including at least about 20% expanded tobacco and the remainder unexpanded tobacco compacted to a density substantially equal to the density of the cut tobacco of the first paper-wrapped column to provide a selected resistance to the draw of the cigarette,
- whereby a predetermined amount of "tar" is delivered in the form of diluted smoke to the smoker.
4 more elements
Dependencies are inferred from the claim text.