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US 4,924,888 AGranted
Smoking article
AssigneeR. J. Reynolds Tobacco Company
InventorsThomas A. Perfetti, Alan B. Norman, Michael F. Dube
Life of this patent
Estimating the term…
Abstract
Cigarettes having low efficiency filters, rods of cut filler having a low packing density, and paper wraps having a high net permeabilities and low inherent permeabilities can yield good taste, low gas phase mainstream deliveries as well as low amounts of visible sidestream smoke. Typical cigarettes have relatively large amounts of volume expanded flue-cured tobacco materials as cut filler, paper wraps containing magnesium oxide and/or magnesium hydroxide, and relatively high levels of air dilution.
Claims45
A cigarette comprising:
- (a) a rod of smokable material contained in a circumscribing wrapping material, wherein
- (i) a majority by weight of the smokable material is flue-cured tobacco material;
- (ii) the wrapping material is a paper wrap containing inorganic oxide and/or inorganic hydroxide, has an inherent permeability of less than about 30 CORESTA units, and has a net permeability between about 80 CORESTA units and about 140 CORESTA units;
- and
- (iii) the packing density of the smokable material within the rod is between about 100 mg/cm.sup.3 and about 200 mg/cm.sup.3 ;
- (b) mouthend piece in the form of a filter element which is capable of providing about 40 weight percent or less mainstream tobacco smoke particulate removal efficiency axially aligned with one end of the rod;
- and
- (c) means for providing greater than about 30 percent air dilution to the cigarette.
5 more elements
A cigarette comprising:
- (a) a rod of smokable material contained in a circumscribing wrapping material, wherein
- (i) a majority by weight of the smokable material is flue-cured tobacco material;
- (ii) the wrapping material is a paper wrap containing magnesium oxide and/or magnesium hydroxide, has an inherent permeability of less than 45 CORESTA units, and has a net permeability between about 80 CORESTA units and about 140 CORESTA units;
- and
- (iii) the packing density of the smokable material is between about 100 mg/cm.sup.3 and about 200 mg/cm.sup.3 ;
- and
- (b) mouthend piece in the form of a filter element which is capable of providing about 40 weight percent or less mainstream tobacco smoke particulate removal efficiency axially aligned with one end of the rod;
- and
- (c) means for providing greater than about 30 percent air dilution to the cigarette.
6 more elements
A cigarette comprising:
- (a) a rod of smokable material contained in a circumscribing wrapping material, wherein
- (i) at least about 70 percent by weight of the smokable material is flue-cured tobacco material;
- (ii) the wrapping material is a paper wrap containing magnesium oxide and/or magnesium hydroxide, has an inherent permeability of less than about 45 CORESTA units, and has a net permeability between about 80 CORESTA units and about 140 CORESTA units;
- and
- (iii) the packing density of the smokable material within the rod is between about 100 mg/cm.sup.3 and about 200 mg/cm.sup.3 ;
- (b) mouthend piece axially aligned with one end of the rod;
- and
- (c) means for providing air dilution to the cigarette, wherein the ratio of FTC carbon monoxide to FTC "tar" of the cigarette is less than 0.8.
5 more elements
A cigarette comprising:
- (a) a rod of smokable material contained in a circumscribing wrapping material, wherein
- (i) at least about 70 percent by weight of the smokable material is flue-cured tobacco material;
- (ii) the wrapping material is a paper wrap containing inorganic oxide and/or inorganic hydroxide, has an inherent permeability of less than about 45 CORESTA units, and has a net permeability of greater than 50 CORESTA units;
- and
- (iii) the packing density of the smokable material within the rod is between about 100 mg/cm.sup.3 and about 250 mg/cm.sup.3 ;
- (b) mouthend piece axially aligned with one end of the rod;
- and
- (c) means for providing greater than about 30 percent air dilution to the cigarette;
- the cigarette further comprising
- (d) nicotine levulinate as an additive thereto.
7 more elements
A cigarette comprising:
- (a) a rod of smokable material contained in a circumscribing wrapping material, wherein
- (i) at least about 70 percent by weight of the smokable material is flue-cured tobacco material;
- (ii) the wrapping material is a paper wrap containing inorganic oxide and/or inorganic hydroxide, has an inherent permeability of less than about 45 CORESTA units, and has a net permeability of greater than 50 CORESTA units;
- and
- (iii) the packing density of the smokable material within the rod is between about 100 mg/cm.sup.3 and about 250 mg/cm.sup.3 ;
- (b) mouthend piece axially aligned with one end of the rod;
- and
- (c) means for providing greater than about 30 percent air dilution to the cigarette;
- the cigarette further comprising
- (d) levulinic acid as an additive thereto.
7 more elements
A cigarette comprising:
- (a) a rod of smokable material contained in a circumscribing wrapping material, wherein
- (i) the wrapping material is a paper wrap having an inherent permeability of less than 15 CORESTA units and a net permeability of greater than about 80 CORESTA units;
- and
- (ii) the packing density of the smokable material is between about 100 mg/cm.sup.3 and about 250 mg/cm.sup.3 ;
- and
- (b) mouthend piece axially aligned with one end of the rod;
- and
- (c) means for providing greater than about 40 percent air dilution to the cigarette;
- the cigarette further comprising
- (d) nicotine levulinate as an additive thereto.
7 more elements
A cigarette comprising:
- (a) a rod of smokable material contained in a circumscribing wrapping material, wherein
- (i) at least about 70 percent by weight of the smokable material is flue-cured tobacco material;
- (ii) the wrapping material is a paper wrap containing inorganic oxide and/or inorganic hydroxide, has an inherent permeability of less than about 45 CORESTA units, and has a net permeability of greater than 50 CORESTA units;
- and
- (iii) the packing density of the smokable material within the rod is between about 100 mg/cm.sup.3 and about 250 mg/cm.sup.3 ;
- (b) mouthend piece axially aligned with one end of the rod;
- and
- (c) means for providing greater than about 30 percent air dilution to the cigarette;
- the cigarette further comprising
- (d) levulinic acid as an additive thereto.
7 more elements
A cigarette comprising:
- (a) a rod of smokable material contained in a circumscribing wrapping material;
- wherein
- (i) the rod has a circumference of about 21 mm or less,
- (ii) the wrapping material is a paper wrap, has an inherent permeability of less than 45 CORESTA units, and has a net permeability of greater than about 50 CORESTA units, and
- (iii) the packing density of the smokable material within the rod is between about 100 mg/cm.sup.3 and about 200 mg/cm.sup.3 ;
- and
- (b) filter means axially aligned with one end of the rod, and which is capable of providing about 40 weight percent or less mainstream smoke particulate removal efficiency;
- the cigarette further comprising
- (c) nicotine levulinate as an additive thereto.
6 more elements
A cigarette comprising:
- (a) a rod of smokable material contained in a circumscribing wrapping material;
- wherein
- (i) the rod has a circumference of about 21 mm or less,
- (ii) the wrapping material is a paper wrap, has an inherent permeability of less than 45 CORESTA units, and has a net permeability of greater than about 50 CORESTA units, and
- (iii) the packing density of the smokable material within the rod is between about 100 mg/cm.sup.3 and about the rod is between about 100 mg/cm.sup.3 and about 200 mg/cm.sup.3 ;
- and
- (b) filter means axially aligned with one end of the rod, and which is capable of providing about 40 weight percent or less mainstream smoke particulate removal efficiency;
- the cigarette further comprising
- (c) levulinic acid as an additive thereto.
6 more elements
A cigarette comprising:
- (a) a rod of smokable material contained in a circumscribing wrapping material, wherein
- (i) the wrapping material is a paper wrap containing inorganic oxide and/or inorganic hydroxide, has an inherent permeability of less than a45 CORESTA units, and has a net permeability of greater than 50 CORESTA units;
- and
- (ii) the packing density of the smokable material is between about 100 mg/cm.sup.3 and about 250 mg/cm.sup.3 ;
- and
- (b) mouthend piece axially aligned with one end of the rod;
- and
- (c) means for providing greater than about 40 percent air dilution to the cigarette;
- the cigarette further comprising
- (d) nicotine levulinate as an additive thereto.
7 more elements
A cigarette comprising:
- (a) a rod of smokable material contained in a circumscribing wrapping material, wherein
- (i) the wrapping material is a paper wrap containing inorganic oxide and/or inorganic hydroxide, has an inherent permeability of less than 45 CORESTA units, and has a net permeability of greater than 50 CORESTA units;
- and
- (ii) the packing density of the smokable material is between about 100 mg/cm.sup.3 and about 250 mg/cm.sup.3 ;
- and
- (b) mouthend piece axially aligned with one end of the rod;
- and
- (c) means for providing greater than about 40 percent air dilution to the cigarette;
- the cigarette further comprising
- (d) levulinic acid as an additive thereto.
7 more elements
Dependencies are inferred from the claim text.