SEGMENTED SMOKING ARTICLE WITH MONOLITHIC SUBSTRATE

• US 20120042885A1
• Filed: 08/19/2010
• Published: 02/23/2012
• Est. Priority Date: 08/19/2010
• Status: Abandoned Application

• Current Assignee: R J Reynolds Tobacco Company (R. J. Reynolds Tobacco)
• Original Assignee: R J Reynolds Tobacco Company (R. J. Reynolds Tobacco)
• Inventors: Banerjee, Chandra K., Conner, Billy Tyrone, Stone, James Richard, Chang, Yi-Ping
• Application Number:
  US12/859,494
• Publication Number:
  US 20120042885A1
• Time in Patent Office: Days
• US Class Current: 131/194
• CPC Class Codes: A24B 15/165 comprising as heat source a carbon fuel or an oxidized or thermally degraded carbonaceous fuel, e.g. carbohydrates, cellulosic material
• CPC Class Codes: A24D 1/22 Cigarettes with integrated combustible heat sources, e.g. with carbonaceous heat sources

Abstract

A cigarette includes lighting and mouth ends. It may include a smokable segment disposed at the lighting end. It also includes a mouth-end segment; an aerosol-generation system disposed between the lighting and mouth ends, which includes (i) a heat-generation segment adjacent the smokable segment, including a heat source configured to be activated by combustion of a smokable material and an insulation layer, and (ii) an aerosol-generating segment including a monolithic substrate with aerosol-forming material disposed between, but physically separate from, each of the heat generation segment and the mouth end; a piece of outer wrapping material that provides an overwrap around at least a portion of the aerosol-generating segment, the heat-generation segment, and at least a portion of the smokable segment; those segments being connected together by the overwrap to provide a cigarette rod; that is connected to the cigarette rod using tipping material.

Claims

1. A cigarette comprising:

a lighting end and a mouth end;

a mouth end piece segment disposed at the mouth end; and

an aerosol-generation system disposed between the lighting end and the mouth end piece segment, the aerosol-generation system including

a heat generation segment disposed at the lighting end having a length including a heat source configured to be activated by ignition of the lighting end and an insulation layer of flame-retardant material disposed around the heat source;

an aerosol-generating segment incorporating aerosol-forming material, said aerosol-generating segment having a length and being disposed between, but physically separate from, each of the heat generation segment and the mouth end, wherein the aerosol-generating segment includes a monolithic substrate.

2. The cigarette of claim 1, wherein the monolithic substrate comprises about one-tenth to about one-half of a total length of the cigarette.

3. The cigarette of claim 1, wherein the monolithic substrate comprises tobacco, glycerin, water, and a binder.

4. The cigarette of claim 3, wherein the monolithic substrate further comprises a selected one of calcium carbonate or graphite as a filler.

5. The cigarette of claim 1, wherein the monolithic substrate comprises about 10 to about 90 weight-percent tobacco.

6. The cigarette of claim 1, wherein the monolithic substrate comprises a mixture of flue-cured, Burley, and Turkish tobaccos.

7. The cigarette of claim 1, wherein the monolithic substrate comprises a center-hole disposed longitudinally through a length thereof.

8. The cigarette of claim 1, wherein the monolithic substrate comprises at least one slot on an exterior surface thereof.

9. The cigarette of claim 1, wherein the monolithic substrate comprises diammonium phosphate.

10. The cigarette of claim 1, wherein the monolithic substrate comprises a plurality of channels longitudinally disposed therethrough.

11. The cigarette of claim 1, further comprising a hollow spacing tube disposed between the monolithic substrate and the mouth end.

12. The cigarette of claim 1, further comprising a tobacco rod disposed between the monolithic substrate and the mouth end.

13. The cigarette of claim 1, wherein the monolithic substrate comprises an outer diameter of about 5 mm to about 10 mm.

14. The cigarette of claim 1, wherein the monolithic substrate comprises a generally cylindrical outer geometry.

15. The cigarette of claim 1, wherein the lighting end comprises a tobacco portion distal of the heat source.

16. The cigarette of claim 1, wherein the monolithic substrate comprises about 10 to about 90 weight-percent tobacco, about 5 to about 50 weight-percent glycerin, about 1 to about 30 weight-percent water, and about 0 to about 10 weight-percent binder.

17. The cigarette of claim 1, wherein the monolithic substrate comprises about 23 to about 58 weight-percent tobacco, about 22 to about 32 weight-percent glycerin, about 1 to about 16 weight-percent water, and about 1 to about 4 weight-percent binder.

18. A monolithic substrate member configured for use in a smoking article, the monolithic substrate comprising:

a composition including about 10 to about 90 weight-percent tobacco, about 5 to about 50 weight-percent glycerin, about 1 to about 30 weight-percent water, and about 0 to about 10 weight-percent binder;

a body having generally cylindrical outer geometry of about 10 mm to about 50 mm in length;

at least one center-hole formed as a longitudinal channel through the body.

19. The monolithic substrate member of claim 18, further comprising a plurality of grooves on an external body surface.

20. A cigarette comprising the monolithic substrate member of claim 19.