Abstract: 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.

Abstract: Tobacco product, consisting of a pre-portioned tobacco supply (15) surrounded by cigarette paper (11; 17) of tubular shape. The tobacco supply is configured as a dimensionally stable tobacco charge of the finished cigarette and is unsmokable by itself but consists completely of smokable material, and it is provided for the self-making of either filterless or filter-tipped cigarettes. Preferably, the tobacco supply (15) comprises an air permeable strand wrapper (13) of smokable material, e.g. of tobacco sheet material. To facilitate insertion of the preformed dimensionally stable tobacco strand (10) into a prefabricated tubular cigarette paper wrapper (11), a funnel-like sleeve (18) is provided whose smaller-diameter end (20) is adapted to be joined to the open end of the tubular cigarette paper wrapper (11). Through this inserting funnel(18) the tobacco strand (10) may be passed without difficulty into the tubular cigarette paper wrapper (11).

Abstract: A tobacco product consists of a preportioned tobacco strand (10) surrounded by a preformed tubular cigarette paper wrapper (11; 17). The tobacco strand is formed of individual tobacco fibers which are interconnected to each other by a binding agent to form a dimensionally stable tobacco strand. The binding agent and the fibers are each smokable but the outer surface of the tubular dimensionally stable tobacco strand is air pervious so that the strand as such is not directly smokable. The dimensionally stable strand (10) is inserted into the preformed tubular cigarette paper wrapper (11) to form a smokable cigarette. The one end of the strand is tapered for easier insertion of the strand into the preformed cigarette paper wrapper.

Abstract: The present invention relates to a smokable article which is intended to permit the smoker to avoid the condensates usually present in the smoke while retaining the taste experience familiar from conventional cigarettes; this is achieved in that a sheet-like carrier element coated with an aroma-carrying material and having a low thermal capacity is brought into direct thermal contact with a heat source comprising a hollow cylindrical combustion element having at least one passage therethrough wherein said passage is separate and distinct from the hollow portion; in the pauses between draws a cavity serves as collecting container or reservoir for the aromatic substances developed which can be inhaled in the next draw by the smoker.

Abstract: Cigarettes which heat but do not burn tobacco are described, preferably having a carbonaceous fuel element extruded around a physically separate aerosol generating means, comprising an aerosol forming material. These cigarettes are capable of producing substantial quantities of aerosol, both initially and over the useful life of the article, without significant thermal degradation of the aerosol former and without the presence of substantial pyrolysis or incomplete combustion products. Preferably, a barrier member is provided to substantially prevent fluid flow between the aerosol generating means and the fuel element. The barrier member is disposable as the cigarette burns back.Also described are embodiments wherein the aerosol generating means encircles at least a portion of the extruded fuel element.In addition, apparatus and method for making smoking articles are described.

Abstract: A smokable article including an aerosol generating zone which has a combustion element and a carrier for an aerosol precursor which coaxially surrounds the combustion element, flow passages in the aerosol generating zone and a mouthpiece. The combustion element includes axial flow passages extending over its entire length and a jacket formed of a gas-impermeable heat-insulating material. The jacket is surrounded at a distance by a concentric sleeve of a gas-impermeable material so that between the jacket and the sleeve at least one flow space results; the sucked-in air flows through the flow passages in the combustion element, then back through the flow space between the jacket and the sleeve and finally through the carrier for the aerosol precursor to the mouthpiece. The carrier includes a precursor, and the combustion element has a plurality of axial passages.

Abstract: A cigarette having a circumference of about 25 mm includes a rod of tobacco cut filler having a circumference of about 12.5 mm which is in turn circumscribed by an air permeable insulating material. The tobacco cut filler has a packing density of less than about 400 mg/cm.sup.3. The insulating material comprises a fibrous material (e.g., glass fibers), and has a radial thickness of greater than about 0.25 mm, and often greater than about 0.5 mm. The insulating material is in turn circumscribed by a paper wrapping material having a low air permeability (e.g., less than about 15 CORESTA units). The cigarette includes a filter element at one end. The cigarette yields low levels of visible sidestream smoke.

Abstract: Smoking articles in the form of a smoking material rod enclosed with a filter means by a paper wrapper are described wherein the density of the smoking material is in a range of from about 100 mg cm.sup.-3 to about 260 mg cm.sup.-3. The smoking material contains at least 20% by weight of expanded tobacco while the filter means has a filtration efficiency less than about 45% for removal of particulate matter. Ventilation means is operable to provide a ventilation level of at least 30%. Smoking articles in accordance with the disclosure exhibit acceptable mainstream smoke over the whole of the smoking process, i.e., there is less perception of an increase in mainstream smoke temperature.

Abstract: There is provided a smoking article having a mouthpiece 9 and a rod of smoking material 12 wrapped in a wrapper 14. A rod 15 constructed of for example activated carbon is provided within the smoking material 12. Between puffs the smoking material extinguishes leaving the rod 15 smouldering. During each puff the smoking material is reignited by the rod 15.

Abstract: 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.

Abstract: A smoking article comprising a cylinder of a first fuel, and a sleeve of a second fuel concentrically surrounding and longitudinally coextensive with the cylinder. A filter plug is coaxially located at one end of the sleeve and a seal is located at the interface of the filter and sleeve. In another embodiment, a tube is coaxially located at one end of the sleeve to define a chamber, and a filter is coaxially located at one end of the tube.

Abstract: 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.

Abstract: A cigarette comprises a blend of tobacco materials. The blend includes volume expanded flue-cured tobacco cut filler and a reconstituted tobacco material in cut filler form. The reconstituted tobacco material includes calcium carbonate and tobacco parts which are formed into a sheet-like shape using a papermaking process. The cigarette can include a filter element provided from a non-woven polypropylene web, glycerin and a water soluble tobacco extract. Such a cigarette can generate low levels of visible sidestream smoke.

Abstract: The ventilated filter cigarettes of the present invention have an American-blend flavor. The cigarettes comprise Virginia tobacco with main stream smoke have a condensate/nicotine ratio of 5:1 to 9:1, a condensate value of 10 mg maximum, a pH-value greater than 6.0, and a pollutant index of less than 35. Specific features of this invention include: a filling tobacco comprising Virginia tobacco with a high nicotine content of 2 to 3.5% by weight; a packing density is 150 to 250 mg/cm.sup.3 ; a cigarette paper having an air permeability of 3 to 20 CORESTA units, in which the cigarette rod is in the hardness/haptic range of 1.9 to 2.5 mm ET; a fine-titre cellulose acetate filter having no flavor-modifying additives and having an individual titre of 1.3 to 2.5 denier, and a total titre of 40,000 to 55,000 denier resulting in a draw resistance of 95 to 160 daPa for a length of 21 mm and a diameter of 7.

Abstract: 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 of 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.

Abstract: A cigarette including a tube of tobacco having a circumferential wall fabricated of a tobacco material with ridges and grooves from in the circumferential wall extending longitudinally of the tobacco tube, a wrapper of combustible material circumscribing the outside peripheral surface, and a filter rod attached at one end of the tobacco tube. Also, a method of making a cigarette includes forming a sheet of tobacco material, forming corrugations in the sheet of tobacco material and forming the corrugated sheet into a cylindrical tube.

Abstract: An apparatus and a method for processing extruded tobacco-containing materials as they are continuously extruded by applying a powdery material to the surface of the extrudate, optionally wiping the coated extruded material in order to smear or embed the powdery materials along and into the surface of the extruded material. The powdery material may be a flavorant or other additive materials modifying the characteristics of the extruded material. The invention is useful particularly for use in processing foamed, extruded materials into smoking articles which can be used with conventional cigarette maker equipment to produce large quantities of foamed, extruded tobacco-containing smoking articles having properties substantially equivalent to those of a conventional cigarette.

Abstract: A coaxial cigarette comprising an inner core of a material glowing away substantially without residue, in particular tobacco material, with a sheath for the inner core, an outer jacket coaxially surrounding the inner core and its sheath and comprising a tobacco and/or non-tobacco material, and a sheath for the outer jacket, has a diameter of the inner core which lies in the range from 45% to 80% of the outer diameter of the coaxial cigarette; the inner core has a packing density in the range from 300 to 400 mg/cm.sup.3 ; the outer jacket has a packing density in the rnage from 170 to 250 mg/cm.sup.3. The sheath of the inner core has an air permeability of less than 3 ISO units.

Abstract: A smoking article (10) is disclosed, in which a tube (12) of combustible, heat fusible material is surrounded by tobacco filler (14) and wrapper (16). Tube (12) extends from approximately 5 mm from the mouth end of the filter to within approximately 10 mm of the opposite end of smoking cylinder (17). By directing essentially unfiltered, undiluted smoke to the smoker during the initial puffs, tube (12) gives the impression of a stronger flavored cigarette. After the first several puffs, the tube (12) is melted shut and normal dilution occurs.

Abstract: A smoking article in which a flavored aerosol is generated by heat transfer to a flavor bed from the combustion of a carbon heat source is provided. The article generates substantially no sidestream smoke. The transfer of heat from the heat source to the flavor bed is accomplished by convective and radiative heat transfer.

Abstract: Low sidestream cigarettes comprise at least 20% expanded tobacco and a cigarette paper comprising a burn retardant.

Abstract: A smoking device includes a cylindrical reticulated tube having an open air inlet at one end and an open air outlet at the other end filled with an aerosol generating material. An insulating collar is concentrically located with the reticulated tube covering a portion of the tube and spaced closer to the air outlet end of the tube than to the air inlet end of the tube. A tobacco plug is coaxially located within the tube with the portion of the length of the tube between the collar and air outlet end embedded within the tobacco plug. A nucleating chamber is located at the end of the tobacco plug opposite the insulating collar, and a reticulated wall is located at the interface of the tobacco plug and nucleating chamber. A filter plug is coaxially located with the tobacco plug at the other end of the nucleating chamber.

Abstract: A tobacco product characterized by improved void volume and firmness characteristics and a method of making a tobacco product by applying binder material to tobacco filler, treating the filler to the extent necessary to cause the filler to become substantially non-tacky, forming a rod, activating the binder and treating the rod to the extent necessary to cause the filler shreds to become bonded to one another.

Abstract: Cigarettes having low efficiency filters, rods of cut filler having a low packing density, and paper wraps having a high net permeabilities and low inherent permeabilities can yield good taste, low gas phase mainstream deliveries as well as low amounts of visible sidestream smoke. Typical cigarettes have relatively large amounts of volume expanded flue-cured tobacco materials as cut filler, paper wraps containing magnesium oxide and/or magnesium hydroxide, and relatively high levels of air dilution.

Abstract: A smoking device includes a tobacco column having a wrapper and either a mouthpiece or filter rod located coaxially at one end of the tobacco column. A rigid tube is concentrically located in the tobacco column. A substrate of porous material is located within the tube. A flavor releasing material and an aerosol generating material are also disposed within the tube. A smoke impermeable seal is located at the interface of the tobacco column and the mouthpiece/filter.

Abstract: A smoking article includes a tobacco column with a gas impermeable tube concentrically located in the tobacco column. The tube is filled with a granular material which is coated with an aerosolizing material. A first chamber is located at one end of the tobacco column with its inlet end in gas flow communication only with the tube, a tobacco rod is located with its inlet end at the discharge end of the first channel, and a second chamber is located in gas flow communication with the discharge end of the tobacco rod. The discharge end of the second chamber is open for discharging gas into the smoker's mouth.

Abstract: An improved cigarette and method of manufacture utilizes a specialized paper incorporating a narrow air tube portion along one of its longitudinal edges, and an elongated, generally rod-shaped rolling bar inserted into and through the air tube, used to roll up and capture tobacco spread over the paper's surface. The specialized cigarette paper incorporates a strip of small filter "flaps" into the construction of the air tube. The resultant cigarette emplaces the tobacco within a single, continuously spiraling envelope of cigarette paper about the central, longitudinal air-tube axis, with the filter flaps extending radially inward to filter the cigarette smoke.

Abstract: In order to provide when smoking a cigarette a substantially uniform concentration of the flavoring substance or substances supplied to the tobacco rod (23) in the form of at least one flavoring substance, the flow of flavoring substance is controlled, in accordance with the invention, periodically between a maximum and a minimum flow. The maximum flow is applied to those parts (36) of the tobacco rod which each include the tip-end of a cigarette, whereas the minimum flow is applied to the opposite end part (37) of the cigarette.

Abstract: A smoking article includes a fuel rod, an insulation section at one end of the fuel rod, a tobacco plug at the end of the insulation return, a cooling chamber at the end of the insulation section, and a filter at the end of the chamber. A tube extends concentrically through the fuel rod to the tobacco plug. The tube is filled with an air permeable substrate including an aerosol generating substance. A heat conducting strip extends concentrically in the substrate in the tube and into the tobacco plug.

Abstract: Low sidestream cigarettes comprise cigarette rods not exceeding 20 mm in circumference. The cigarette rods comprise paper wrappers of a type which effect a sidestream reduction of at least 30% when used on rods of conventional dimensions.

Abstract: A method of making cigarettes in which a continuous strip of air-impervious material is formed into a tube which is then nipped at spaced intervals to form a string of chubs. This string of chubs is then introduced into the chimney of a conventional high speed cigarette making machine wherein a continuous cigarette rod of tobacco will be formed about the hollow chubs. The continuous rod is then severed at the nips between adjoining chubs. Thereafter as desired the sections are joined to filters with the filter tip sections being cut into individual cigarettes having the closed end of a chub adjacent each filter.

Abstract: A cigarette having a generally cylindrical tobacco rod having a tobacco filler of ground tobacco. The tobacco rod has a circumference within the range of 10 mm to 19 mm. The tobacco rod is circumscribed by a combustible paper.

Abstract: Low sidestream cigarettes comprise at least 20% expanded tobacco and cigarette paper of an air permeability of not more than 20 Coresta units, the tobacco density being between 100 and 260 mg cm.sup.-3.

Abstract: A coaxial cigarette comprising an inner core of a material, which glows substantially residue-free, in particular tobacco material, a wrapper for the inner core, an outer jacket which consists of a tobacco and/or non-tobacco material and coaxially surrounds the inner core and its wrapper, and a wrapper for the outer jacket, has a ventilated coaxial filter with a filter core, the internal diameter of which corresponds substantially to the diameter of the inner core, and with a filter jacket; the filter core has an air-impermeable wrapper; the filter jacket has an air-permeable wrapper; the wrapper of the inner core and the wrapper of the outer jacket are provided with glow agents; and the draw resistance of the inner core is lower than the draw resistance of the outer jacket.

Abstract: The present invention relates to an aerosol producing substrate for subsequent use in smoking articles and to methods of preparing the aerosol producing substrate. Preferred smoking articles which employ the aerosol producing substrate of the present invention are 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 present of substantial pyrolysis or incomplete combustion products or sidestream aerosol. Thus, such smoking articles provide the user with the sensations and benefits of cigarette smoking without burning tobacco.

Abstract: In a smoking article comprising a smoking rod and a mouthpiece, the rod may comprise a wrapped body, of particles of tobacco and/or other smoking material, of which body the packing density is in a range of from 100 to 400 mg cm.sup.-3, a passage extending within the rod and in gas-flow communication with the mouthpiece and the article comprising menthol or other vapor-release material at the mouthpiece and/or at a mouthpiece-end zone of the passage.The passage, which may extend substantially to the mouthpiece end of the rod, may be closed at the end thereof remote the mouthpiece end.The passage may be provided by a tube of combustible material or as a bore extending within said body of particles.A portion of the cross-section of the mouthpiece end of the rod not occupied by said passage may be in gas-flow communication with the mouthpiece. The mouthpiece may comprise a filter.

Abstract: A novel cigarette structure is provided which permits a cigarette of lower tar to be provided without impairing the flavor. Strips of more highly-flavored tobacco are provided on opposite sides and sandwich a layer of lesser-flavored tobacco between them.

Abstract: The present invention relates to a smoking article which produces an aerosol that resembles tobacco smoke, but contains no more than a minimal amount of incomplete combustion or pyrolysis products.The smoking article of the present invention provides an aerosol "smoke" which is chemically simple, consisting essentially of oxides of carbon, air, water, and the aerosol which carries any desired flavorants or other desired volatile materials, and trace amounts of other materials. The aerosol "smoke" has no significant mutagenic activity as measured by the Ames Test. In addition, the article may be made virtually ashless so that the user does not have to remove any ash during use.One embodiment of the present smoking article comprises a short combustible carbonaceous fuel element; a short heat stable, preferably carbonaceous substrate bearing an aerosol forming substance, and a relatively long mouthend piece.

Abstract: A novel cigarette structure is provided which produces an approximately uniform delivery of flavour along its length as the cigarette is smoked. The filler rod of the cigarette has a strip of more highly-flavoured tobacco to one side or to two sides of the rod, with the remainder of the cross-section of the rod being formed of lower flavoured tobacco, and has a higher proportion of the more highly-flavoured tobacco than the lower flavour tobacco at the lighting end. The cigarette filler rod of improved smoking characteristics may be formed by a simplified assembly procedure.

Abstract: 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 employes a dual burn rate fuel element, which utilizes a fast burning segment and a slow burning segment.The use of such a dual burn rate fuel element has several advantages over conventional homogeneous fuels. For example, the fast burning component assists in the ease of lighting the fuel element, and provides rapid heat transfer to the aerosol generating means. This in turn, provides early aerosol delivery.The slow burning component provides for even heat distribution throughout the burn period.

Abstract: The segmented cigarette includes combustible inside and outside tubular walls that are spaced from each other by ridges extending therebetween. The inside wall holds a plurality of elongated segments of tobacco aligned end to end. Different tobaccos may be utilized in each segment. The upstream, axial end of each segment is sealed by paper. The inside wall includes a plurality of gas passages therethrough near the axial end seal such that gas from the burning end of the cigarette passes through those passages into the interspace between the outside and inside walls, expands and cools. This cooling and expansion reduces the accumulation of noxious substances in the segments of tobacco downstream.

Abstract: Co-extruded smokable material in sheet-like form has a multi-layered structure. The layers are generally parallel to the major surface of the material. The material is provided by subjecting at least two filler materials to high shear agitation and co-extruding the materials while in a semi-soft state. The multi-layered material can be sized by roll treatment in order to provide a sheet-like material having a thickness of less than about 0.008 inch. In particular, the co-extruded multi-layered smokable material is subjected to compressive treatment applied perpendicularly to the major surface of the co-extruded marterial to provide a co-extruded smokable material of reduced thickness. The material so provided can be cut into small sheets (e.g., about 4 inches by 4 inches square) or into strands and employed as cut filler in the manufacture of cigarettes.

Abstract: Filter cigarettes can be manufactured in a highly cost effective manner. Filter cigarettes include a tobacco rod having two segments of smokable material. The first segment is positioned at the lighting end of the cigarette and includes expensive, normally high quality tobaccos. The second segment is positioned at the filter end of the rod and includes cost effective smokable materials. A cellulose acetate filter element is axially aligned with the rod and is positioned adjacent to the second segment. Tipping material attaches the filter element to the tobacco rod. The second segment extends along the rod up to about 20 mm past the foremost point which the tipping material extends. The combined longitudinal length of the filter element and the second segment extends up to about 60 percent of the total length of the smoking article.

Abstract: A rod-like filler for the making of a cigarette rod is obtained by showering particles of tobacco onto a foraminous belt conveyor which is located in front of a suction chamber and is flanked by two additional foraminous belt conveyors or by two stationary sidewalls so that the particles form a thin layer having a substantially U-shaped cross-sectional outline with a centrally located web and two legs. The legs are thereupon moved toward each other to convert the layer into a tube having a relatively soft core or a centrally located channel which is devoid of tobacco, and the filler is then draped into a web of cigarette paper and simultaneously densified to reduce its cross section to that of a cigarette before the resulting cigarette rod is subdivided into discrete cigarettes of desired length. The thickness of the layer is a fraction of its width.

Abstract: Cigarette rods include four segments of smokable material. First and second segments are positioned at the extreme ends of the rod. The first segment is positioned at the end of the rod to be lit. A third segment is positioned adjacent the first segment, and a fourth segment is positioned adjacent the second segment. The density of the third segment is greater than the fourth segment. The first and second segments can be "dense ends" or "loose ends" relative to the respective adjacent segments. The cigarette rods have a relatively uniform burn rate provided by treatment of the wrapping material of the rod with burn rate suppressants and burn rate accelerators in the positions thereof which overlie the third and fourth segments, respectively.

Abstract: In the making of cigarette rod, which rod comprises an axial element of filler material and a wrapper surrounded by smoking material and an exterior wrapper, a web of the exterior wrapper material, a stream of the smoking material and a preformed rod, providing the axial element, are fed to the garniture of a cigarette rod making machine. The rod providing the axial element is made on a further rod making machine.

Abstract: An improved composite cigarette comprising a core of lesser quality tobacco smoking material surrounded by an annulus of higher quality tobacco smoking material is described. The improvement resides in the provision of an increased quantity of the annulus material at the lighting end of the cigarette, so as to increase the initial flavor impact and thereby provide more uniform smoke taste characteristics along the length of the cigarette.

Abstract: Cigarettes having reduced loose end propensity and a process for preparing same are disclosed. The cigarettes are prepared from shredded smoking material having been uniformly treated with a free-flowing non-deliquescent, hygroscopic powder and aged prior to introduction into a cigarette-making machine. The powder preferably has a size between about 50 and 200 microns, and becomes tacky upon absorption of moisture.

Abstract: The present invention relates to a smoking article, preferably in cigarette form, which produces an aerosol that resembles tobacco smoke. The article preferably comprises a short combustible fuel element having a density greater than 0.5 g/cc, a separate substrate bearing an aerosol forming material, a heat conducting member recessed from the lighting end of the fuel element, which preferably encloses the substrate, a resilient insulating jacket encircling at least a portion of the fuel element, and an optional tobacco jacket encircling at least a portion of the aerosol forming material.

Abstract: Cigarette rods include four segments of smokable material. First and second segments are positioned at the extreme ends of the rod. The first segment is positioned at the end of the rod to be lit. A third segment is positioned adjacent the first segments, and a fourth segment is positioned adjacent the second segment. The density of the third segment is greater than the fourth segment. The first and second segments can be "dense ends" or "loose ends" relative to the respective adjacent segments.