R.j. Reynolds Tobacco Company

William J Casey, Iii

Jack F Clearman

Thomas L Gentry

Joseph J Chiou

William C Squires

Jeffrey A Willis

Darrell D Williams

Gary R Shelar

Alvaro Gonzalez-Parra

Jeffery S Gentry

Dennis M Riggs

Aju N Lekwauwa

Walter R Young, Jr

Ronald O Wagoner

Kenneth W Swicegood

Billy Tyrone Conner

Evon Llewellyn Crooks

Daniel Verdin Cantrell

Dempsey Bailey Brewer, Jr

Joanne Naomi Taylor

Jerry W Lawson

Olivia P Furin

James Richard Stone

Kelly K Hutchison

Grant M Stewart

Calvin L Neumann

Wayne E Davis, Jr

A smoking article, such as a cigarette, includes a lighting end and a mouth end. The lighting end is a longitudinally extending segment comprising smokable material that is intended to be lit and burned, and the resulting smoke generated by the burning of that smokable material is intended to be drawn into the mouth of the smoker through the mouth end of smoking article. A mouth end piece is located at the mouth end of the smoking article, and the mouth end piece allows the smoking article to be placed in the mouth of the smoker to be drawn upon. The smoking article further incorporates an aerosol-generation system that is located between the lighting end segment and the mouth end piece. The aerosol-generation system includes (i) a heat generation segment located adjacent to the lighting end segment, and (ii) an aerosol-generation region located between the heat generation segment and the mouth end piece. The aerosol-generation region incorporates an aerosol-forming material (e.g., glycerin and flavors). The lighting end segment is in a heat exchange relationship with the heat generation segment such that burning smokable material within the lighting end segment can ignite a combustible fuel element of the heat generation segment. The heat generation segment is in a heat exchange relationship with the aerosol-generation region such that heat generated by the burning fuel element acts to volatilize aerosol-forming material for aerosol formation.

Smoking article

Disclosed is a stabilized substrate composition for smoking articles, particularly cigarettes. In general, the stabilized substrate composition comprises an admixture of a binder and an aerosol forming material which plasticizes the binder, together with optional fillers and/or base materials. In the stabilized substrate compositions of the present invention the relative amounts of binder and aerosol former depend particularly on the situation in which the substrate composition is used. In general, the ratio of aerosol former to binder is between about 3:1 and about 40:1. When the stabilized composition is used on a base material such as tobacco cut filler, the ratio of aerosol former to binder should be at least about 15:1, and preferably is from about 25-35:1, with a maximum ratio of about 40:1. If the composition is formed into a cast sheet, the minimum ratio is about 3:1, the preferred ratio is about 8:1, and the maximum ratio is about 10:1. When the stabilized mixture is printed on a sheet or web substrate, the ratio of aerosol former to binder is generally about 6:1, the maximum ratio is about 10:1, and the minimum ratio is about 3:1.

Substrates material for smoking articles

A cigarette filter connected to a tobacco rod is provided with air dilution holes which extend radially into the fibrous material of the filter to a depth of about 1.0 to about 4.0 millimeters. When a smoker draws on the cigarette, air admitted into the air dilution holes flows to a central or core region of the filter and thence to the smoker's mouth. Mainstream smoke from the tobacco rod flows into the filter and is diverted to an annular region surrounding the core region.

Cigarette filter

Substrate material for smoking articles

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

The present invention preferably relates to the use of an impact modifying agent and in particular the use of levulinic acid, a carbohydrate ester acetate or a carbohydrate ester levulinate in one or more of the component parts of a smoking article comprising a carbonaceous fuel element and a physically separate non-burning charge of tobacco or tobacco extract which article 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 use of an impact modifying agent in smoking articles in accordance with the present invention provides the user with the sensations and benefits of cigarette smoking without burning tobacco and without the undesirable impact or off-taste commonly found in previous smoking articles.

Impact modifying agent for use with smoking articles

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

Disclosed are smoking articles, such as cigarettes, which include a short, i.e., about 9 mm long carbonaceous fuel element positioned in a heat exchange relationship with a physically separate aerosol generating means. Surrounding the fuel element is a tobacco/glass insulating wrapper, preferably comprising at least four layers, defined from the periphery of the fuel element as: (1) a first layer of glass fibers; (2) a first tobacco-containing sheet; (3) a second layer of glass fibers, and (4) a second tobacco-containing sheet.

Cigarette with tobacco/glass fuel wrapper

A heat conductive capsule which carries or contains an aerosol forming material for use in smoking articles which upon heating ruptures or otherwise undergoes a change in structure to release at least a portion of the aerosol forming material, which aerosol resembles tobacco smoke, but preferably contains no more than a minimal amount of incomplete combustion or pyrolysis products. The preferred smoking article of the present invention provides an aerosol 'smoke' which is chemically simple, consisting essentially of air, oxides of carbon, water, and the aerosol which carries any desired flavor or other desired volatile materials, and trace amounts of other materials. One especially preferred embodiment of the present smoking article comprises a short combustible carbonaceous fuel element, encapsulated aerosol forming substance, and a relatively long mouthend piece. The capsule is preferably formed from a heat conductive metal such as aluminum foil.

Smoking article with an enclosed heat conductive capsule containing an

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Clemmons, NC, United States of America

William J Casey, Iii