Segmented smoking article with stitch-bonded substrate

1. A cigarette comprising:

a lighting end and a mouth end;

a mouth end piece segment disposed at the mouth end;

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 substrate comprising

a central core comprising fabric throughout at least a portion of its cross-section,

a first outer layer of a glycerin-treated fabric, coaxially disposed around the core,

an intermediate layer coaxially disposed around the first outer layer, the intermediate layer including aromatic tobacco paper, and

a second outer layer of a glycerin-treated fabric, coaxially disposed around the intermediate layer, wherein at least a portion of the first, intermediate, and second layers is stitch-bonded together with a substrate heat-conductive material; and

a piece of outer wrapping material oriented to provide an overwrap (i) around the aerosol-generating segment for at least a portion of its length, and (ii) around the heat generation segment for the length of that segment, those segments being connected together by the overwrap to provide a cigarette rod; and

the mouth end piece segment being connected to the cigarette rod using tipping material.

2. The cigarette of claim 1 , wherein the substrate first outer layer comprises a plurality of layers.

3. The cigarette of claim 1 , wherein the substrate second outer layer comprises a plurality of layers.

4. The cigarette of claim 1 , wherein the heat generation segment and the aerosol-generating segment are disposed in a heat exchange relationship with one another and the insulation provides an insulative layer about at least a portion of the heat source.

5. The cigarette of claim 1 , wherein the substrate heat-conductive material comprises aluminum.

6. The cigarette of claim 1 , wherein at least one of the first outer layer and the second outer layer comprises rayon.

7. The cigarette of claim 1 , wherein at least one of the first outer layer and the second outer layer comprises cotton.

8. The cigarette of claim 1 , further comprising a buffer between the heat generation segment and the aerosol-generating segment.

9. The cigarette of claim 1 , wherein the insulation layer further comprises c-glass fiber.

10. The cigarette of claim 1 , wherein the insulation layer comprises a carbon fiber material.

11. The cigarette of claim 1 , further comprising a smokable segment disposed at the lighting end, said smokable segment having a length and comprising a smokable material circumscribed by wrapping material.

12. The cigarette of claim 1 , wherein the central core comprises an open space.

13. The cigarette of claim 1 , wherein the heat source comprises a foamed structure comprising carbon.

14. A cigarette comprising:

a lighting end and a mouth end;

a smokable segment disposed at the lighting end, said smokable segment having a length and comprising a smokable material circumscribed by wrapping material;

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

a heat generation segment adjacent to the smokable segment, said heat generation segment having a length and including a heat source configured to be activated by combustion of the smokable material 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 substrate comprising

a central core comprising fabric throughout at least a portion of its cross-section,

a first outer layer of a glycerin-treated fabric, coaxially disposed around the core,

an intermediate layer coaxially disposed around the first outer layer, the intermediate layer including non-cast-sheet aromatic tobacco paper, and

a second outer layer of a glycerin-treated fabric, coaxially disposed around the intermediate layer, wherein at least a portion of the first, intermediate, and second layers is stitch-bonded together with a metallic substrate heat-conductive material; and

a piece of outer wrapping material oriented to provide an overwrap (i) around the aerosol-generating segment for at least a portion of its length, (ii) around the heat generation segment for the length of that segment, and (iii) around the smokable segment for at least a portion of its length; those segments being connected together by the overwrap to provide a cigarette rod; and

a mouth end piece segment being connected to the cigarette rod using tipping material.

15. The cigarette of claim 14 , wherein at least one of the substrate first outer layer and the second outer layer comprises a plurality of layers.

16. The cigarette of claim 14 , wherein the heat generation segment and the aerosol-generating segment are disposed in a heat exchange relationship with one another and the insulation provides an insulative layer about at least a portion of the heat source.

17. The cigarette of claim 14 , wherein the substrate heat-conductive material comprises aluminum.

18. The cigarette of claim 14 , wherein at least one of the first outer layer and the second outer layer comprises rayon.

19. The cigarette of claim 14 , wherein at least one of the first outer layer and the second outer layer comprises cotton.

20. A cigarette comprising:

a lighting end and a mouth end;

a smokable segment disposed at the lighting end, said smokable segment having a length and comprising a smokable material circumscribed by wrapping material;

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

a heat generation segment adjacent to the smokable segment, said heat generation segment having a length and including a heat source configured to be activated by combustion of the smokable material 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 substrate comprising

a central core comprising fabric throughout at least a portion of its cross-section,

a first outer layer of a glycerin-treated fabric, coaxially disposed around the core, the first outer layer comprising a plurality of layers,

an intermediate layer coaxially disposed around the first outer layer, the intermediate layer including non-cast-sheet aromatic tobacco paper, and

a second outer layer of a glycerin-treated fabric, coaxially disposed around the intermediate layer, the second outer layer comprising a plurality of layers, wherein at least a portion of the first, intermediate, and second layers is stitch-bonded together with a metallic substrate heat-conductive material; and

a piece of outer wrapping material oriented to provide an overwrap (i) around the aerosol-generating segment for at least a portion of its length, (ii) around the heat generation segment for the length of that segment, and (iii) around the smokable segment for at least a portion of its length; those segments being connected together by the overwrap to provide a cigarette rod; and

a mouth end piece segment being connected to the cigarette rod using tipping material.