Smoking article

A smoking article comprising a coherent mass of combustible tobacco-containing material, said mass having at least one through passage extending from a first opening in the surface of said mass to a second opening remote from the first, said mass having a porosity such as to support combustion of said mass when ignited, said mass having a density of about 1 g/cc, the density and porosity of said mass being such as to substantially occlude gas flow therethrough, thereby providing that puff induced air flow through the smoking article is through the passage.

A smoking article comprising a coherent cylindrical mass of combustible tobacco-containing material having a passage extending axially therethrough, said passage having a cross-sectional surface area greater than the corresponding surface area of the mass, said mass having a porosity such as to support combustion of said mass when ignited, said mass further being of a density and porosity such as to substantially occlude gas flow therethrough, thereby providing that puff induced air flow through the smoking article is through the passage.

A smoking article comprising a coherent mass of combustible tobacco-containing material formed by extruding a mixture comprising water and comminuted tobacco, said mass having at least one through passage extending from a first opening in the surface of said mass to a second opening remote from the first, said mass having a porosity such as to support combustion of said mass when ignited, said mass further being of a density and porosity such as to substantially occlude gas flow therethrough, thereby providing that puff induced air flow through the smoking article is through the passage.

A smoking article comprising a coherent mass of combustible tobacco-containing material formed by extruding a binder-free mixture comprising comminuted tobacco, water and a volatile organic liquid compatible with the tobacco, and drying the extrudate, said mixture having a solids content of from about 55 to 75 weight percent, said mass having at least one through passage extending from a first opening in the surface of said mass to a second opening remote from the first, said mass having a porosity such as to support combustion of said mass when ignited, said mass further being of a density and porosity such as to substantially occlude gas flow therethrough, thereby providing that puff induced air flow through the smoking article is through the passage.

A smoking article comprising a coherent mass of combustible material, said material comprising tobacco and filler particles, said mass having at least one through passage extending from a first opening in the surface of said mass to a second opening remote from the first, said mass having a porosity such as to support combustion of said mass when ignited, said mass further being of a density and porosity such as to substantially occlude gas flow therethrough, thereby providing that puff induced air flow through the smoking article is through the passage.

A smoking article comprising a coherent mass of combustible material, said material comprising tobacco and burn additives, said mass having at least one through passage extending from a first opening in the surface of said mass to a second opening remote from the first, said mass having a porosity such as to support combustion of said mass when ignited, said mass further being of a density and porosity such as to substantially occlude gas flow therethrough, thereby providing that puff induced air flow through the smoking article is through the passage.

The smoking article of claim 1, 2, 4, 5, 6, 14 or 32 wherein the material is selected from the group consisting of bright tobacco, burley tobacco, oriental tobacco, reconstituted tobacco, prepyrolyzed tobacco and mixtures thereof.

A smoking article comprising a coherent mass of combustible tobacco-containing material, said mass having at least one through passage extending from a first opening in the surface of said mass to a second opening remote from the first, said mass having a porosity such as to support combustion of said mass when ignited, said mass being of a density and porosity such as to substantially occlude as flow therethrough, thereby providing that puff induced air flow through the smoking article is through the passage, said article including at least one air permeable plug of readily ignitable material disposed in passage blocking position.