R.j. Reynolds Tobacco Company

William C Squires

Jack F Clearman

Joseph J Chiou

Thomas L Gentry

William J Casey, Iii

Darrell D Williams

Richard L Lehman

James L Resce

Olivia P Furin

Chandra K Banerjee

Gary R Shelar

Alan B Norman

Ernest G Farrier

Jeffery S Gentry

Stephen W Jakob

Olivia D Furin

Rhonda F Hayden

Debra L Raynor

The present invention relates to an improved insulating sheet material and to cigarettes and other smoking articles which employ the insulating sheet material as one or more components thereof. The improved insulating material is particularly useful in smoking articles having a fuel element and a physically separate aerosol generating means, e.g. as an insulating member for insulating the fuel element. In general, the sheet material of the present invention is formable without the use of any organic binder and comprises an inorganic fibrous material such as calcium sulfate fibers, calcium sodium phosphate fibers, or mixtures thereof, and a relatively small amount of highly refined cellulose-based fibers such as wood pulp.

Smoking article with improved insulating material

A cigarette includes a longitudinally segmented combustible fuel element, and a substrate carrying tobacco extract and glycerin positioned physically separate from the fuel element. The fuel element is composed of a carbonaceous material and is extruded in such a manner that when positioned within the cigarette, its extrusion axis is perpendicular to the longitudinal axis of the cigarette. The fuel element includes a burning segment at one end, a base segment at the opposite end, and an isolation segment between the burning and base segments. A metal cartridge is radially spaced from the longitudinal outer periphery of the burning segment of the fuel element. A retaining member grasps the base segment of the fuel element and holds the fuel element securely in place within the cigarette.

Cigarette

A combustible smokable filler material includes an agglomerated matrix filler having an inorganic component (e.g., particles of calcium carbonate) and a carbonaceous component (e.g., calcined molasses). The smokable filler material includes a binding agent and an aerosol forming material. Tobacco extracts and/or pieces of tobacco laminae can be incorporated into the smokable filler material, and/or the smokable filler material can be blended with tobacco cut filler. Cigarettes are provided by wrapping the smokable filler material in a paper wrapping material. A typical paper wrapping material has a porosity of less than about 5 CORESTA units.

Cigarette and smokable filler material therefor

An aerosol delivery article includes a longitudinally segmented combustible fuel element, and a substrate carrying flavor or a drug positioned physically separate from the fuel element. The fuel element is composed of a carbonaceous material and is extruded in such a manner that when positioned within the article, its extrusion axis is perpendicular to the longitudinal axis of the article. The fuel element is segmented longitudinally and includes a burning segment at one end, a base segment at the opposite end, and an isolation segment between the burning and base segments. A metal cartridge is radially spaced from the longitudinal outer periphery of the burning segment of the fuel element. A retaining member grasps the base segment of the fuel element and holds the fuel element securely in place within the article.

Aerosol delivery article

The present invention preferably relates to a smoking article which is capable of producing substantial quantities of aerosol, both initially and over the useful life of the product, without significant thermal degradation of the aerosol former and without the presence of substantial pyrolysis or incomplete combustion products or sidestream aerosol. The article of the present invention is able to provide the user with the sensations and benefits of cigarette smoking without the substantial combustion products produced by burning tobacco in a conventional cigarette. In addition, the article may be made virtually ashless so that the user does not have to remove any ash during use. Preferred embodiments of the present smoking article comprise a short combustible carbonaceous fuel element, a heat stable, preferably particulate alumina, substrate bearing an aerosol forming substance, an efficient insulating means, and a relatively long mouthend piece. The fuel element is provided with a plurality of peripheral passageways i.e., passageways on the outer surface of the fuel element and/or just beneath the surface of the fuel element, which provides heat transfer from the burning fuel element to the aerosol generating means while reducing levels of carbon monoxide in the aerosol generated and delivered to the user.

Smoking article with improved fuel element

The present invention is directed to cigarettes and other smoking articles, as well as disposable cartridges for such smoking articles, which utilize compact carbonaceous fuel elements, and which provide low levels, i.e., less than about 10 mg, of carbon monoxide (CO) to the smoker. In general, these high density (about 0.7 to 1.5 g/cc) fuel elements have a plurality of passageways therein or thereon, and further comprise at least about 80-90% carbon by weight. The fuel elements are less than about 7 mm in length, preferably from about 3 to 6.5 mm, most preferably from about 5.5 to 6.0 mm, and less than about 7 mm in diameter, preferably from about 4.0 to 6.5 mm, and most preferably from about 4.8 to 6.0 mm.

Low CO smoking article

Growing community of inventors

Winston-Salem, NC, United States of America

William C Squires