R.j. Reynolds Tobacco Company

Gary R Shelar

Michael D Shannon

Chandra K Banerjee

Jack F Clearman

Thomas L Gentry

James L Resce

Jeffery S Gentry

Richard L Blakley

Andrew J Sensabaugh, Jr

Henry T Ridings

Ernest G Farrier

Olivia D Furin

Thomas A Perfetti

Alan B Norman

Alvaro Gonzalez-Parra

John H Reynolds, Iv

Stephen W Jakob

Jackie L White

Richard L Lehman

William J Casey, Iii

Edward Bernasek

Johnny L Brooks

Karen M Womble

James L Harris

Paul Fischer Bernasek

Dennis M Riggs

Jeffrey A Willis

Walter R Young, Jr

Aju N Lekwauwa

Gary W Worrell

Ronald O Wagoner

Kenneth W Swicegood

William M Hildebolt

Billy Tyrone Conner

Vernon Brent Barnes

Fred R Radwanski

Dwayne William Beeson

William F Cartwright

Mark L Raker

Milly M Wong

Leon E Chambers, Jr

Russell D Barnes

Loyd G Kasbo

Donald F Durocher

Sharon Pitts Dunlap

Robert G Geer

Brian M Lawrence

Edward P Bullwinkel

Jerry W Lawson

Douglas C Clark

William C Squires

Barbara W Arzonico

Max N Baker

Gerhard Hensgen

Rhonda F Hayden

Bruce R Bullings

Kelly K Hutchison

Alfred Schubert

Randall Allison Hoots

Kathy A Hege

An improved substrate for use in smoking articles is produced by infusing aerosol forming material into tobacco. The infusion can take place in one or multiple steps. Preferably, about 10% to about 40% by weight of aerosol former, such as glycerin is infused into strip tobacco at elevated temperatures. The tobacco containing the aerosol former may then be dried, equilibrated to ambient conditions and/or blended with tobacco which does not have added aerosol former. Preferably the resulting material is again infused with an additional about 5% to about 15% by weight of aerosol former, at elevated temperatures. The new substrate material, and the method for making it, result in a substrate which has reduced migration of aerosol former and substantially improved manufacturing characteristics.

Cigarette with improved tobacco substrate

A smokable filler material includes an aerosol forming material (e.g., glycerin) and as binding agent. 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. The amount of aerosol forming material within the smokable filler material typically is at least about 20 percent, based on the weight of that smokable filler material. 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 material for use in

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

Substrate material for smoking articles

Cigarettes include a filter element which have a gathered web of paper incorporating a carbonaceous material. The paper is gathered so as to include a plurality of longitudinally extending channels, and the channels provide a cross-sectional void area of about 5 to about 30 percent of the filter element.

Cigarette filter

A cigarette includes a charge or roll of smokable material (e.g., tobacco cut filler) circumscribed by two layers of paper wrapping materials. The first or inner wrapping material includes an inorganic filler material and tobacco material within the web. The inner wrapping material also can include a water soluble salt burn chemical and a carbonaceous material within the web. The second or outer wrapping material circumscribes and overwraps the first wrapping material, has a cellulosic base web and inorganic filler material, and exhibits a low inherent air permeability. The outer wrapping material can include a magnesium hydroxide filler, and exhibits an inherent air permeability of below about 15 CORESTA units and a net air permeability above about 40 CORESTA units. The cigarette is capable of sustaining smolder under FTC smoking conditions while yielding very low levels of visible sidestream smoke. The cigarette includes a filter element having 2 or more longitudinally positioned segments, and one of the segments includes a carbonaceous material.

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

A smokable filler material includes an aerosol forming material (e.g., propylene glycol and glycerin) and a binding agent (e.g., ammonium alginate). 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. The amount of aerosol forming material within the smokable filler material typically is at least about 20 percent, based on the weight of that smokable filler material. 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. Cigarettes cn include two layers of circumscribing paper wrapping materials. Cigarettes also can include filter elements.

Cigarettes include tobacco-containing smokable material wrapped in a low porosity paper wrapper. The smokable material includes an intimate mixture of tobacco extract, pyrolyzed alpha-cellulose, agglomerated calcium carbonate particles, glycerin and carboxymethylcellulose. Such cigarettes yield low levels of incomplete combustion products and generate low levels of visible sidestream smoke.

The present invention relates to fuel elements useful in smoking articles which produce an aerosol that resembles tobacco smoke, but contains no more than a minimal amount of incomplete combustion or pyrolysis products. Preferred embodiments of the present invention comprise a short combustible carbonaceous fuel elements, usually less than about 20 mm in length, preferably from about 5 to 15 mm in length, and most preferably about 10 mm in length. The diameter of the fuel elements of the present invention generally is less than about 8 mm, preferably from about 3 to 7 mm, and most preferably from about 4 to 6 mm. Smoking articles utilizing the fuel elements of the present invention are capable of providing an aerosol 'smoke' which is chemically simple, consisting essentially of air, oxides of carbon, water, and the aerosol which carries any desired flavorants or other desired volatile materials, and trace amounts of other materials. The aerosol 'smoke' from the preferred embodiments has no significant mutagenic activity as measured by the Ames Test. In addition, the fuel element may be made to be virtually ashless so that the user does not have to remove any ash during use.

Smoking 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. Preferred embodiments of the present smoking article comprise a short combustible carbonaceous fuel element, a physically separate aerosol generating means including an aerosol forming substance, a physically separate tobacco jacket around at least the aerosol generating means, and a relatively long mouthend piece. The articles of the present invention provide the user with taste, feel and aroma, associated with the smoking of conventional cigarettes. Tobacco in many embodiments of this invention is burned to provide a sidestream aroma and smoke. In other embodiments, tobacco does not burn, but still provides tobacco flavors to the aerosol delivered to the user.

Smoking article with tobacco jacket

A method for making a smoking article is described wherein an aerosol generating cartridge is inserted into a sleeve, preferably having a tobacco insulating material. Also described are articles of manufacture having an elongate jacket module with a rod segment and an annular segment. The rod segment has a length of rod of fibrous material. Disposed logitudinally on either side of the rod segment is an annular segment of insulating material. Additionally, articles of manufacture useful for making smoking articles are described having an elongate structure with two or more repeating sections wherein each section preferably has a tobacco-containing spacer segment and mouthend segment.

Method for making a smoking article and components for use therein

Making an aerosol generating cartridge useful for a smoking article is described. The method comprises filling a non-combustible elongated capsule, open at one end, with a substrate bearing an aersol forming material, and applying a fuel element to the open end of the capsule to enclose the substrate within the capsule.

Method for making aerosol generating cartridge

The flavor substances of the present invention are prepared by toasting (heating) natural tobacco in an inert atmosphere at a temperature of at least about 225.degree. C., fractionating the volatiles and collecting at least a portion of the fractionated materials as the flavor substances. This fractionating and/or collecting can be conducted by condensation, liquid-liquid extraction, sorption (adsorption and/or absorption) and the like, with either a solid or liquid sorbent medium. Either the sorbent medium containing the trapped volatiles or the volatiles themselves may be used as the flavor substances of the present invention.

Flavor substances for smoking articles

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. Preferred embodiments of the present smoking article comprise a short combustible carbonaceous fuel element, a physically separate aerosol generating means including an aerosol forming substance, a tobacco jacket around at least a portion of the fuel element and the aerosol generating means, and a relatively long mouthend piece. The articles of the present invention provide the user with taste, feel and aroma, associated with the smoking of conventional cigarettes. Tobacco in many embodiments of this invention is burned to provide a sidestream aroma and smoke. In other embodiments, tobacco does not burn, but still provides tobacco flavors to the aerosol delivered to the user.

Growing community of inventors

Greensboro, NC, United States of America

Gary R Shelar