Abstract: The invention relates to a coaxial cigarette including a rod comprising a rod core, a rod core wrapping, a rod jacket and a rod jacket wrapping; and a filter comprising a filter core, a filter core wrapping, a filter jacket and a filter jacket wrapping, a smoke flow stopper being provided between the rod core and the filter jacket and/or the rod jacket and the filter core in the zone joining the rod core wrapping and filter core wrapping, the invention also relating to a method of producing such a cigarette.

Abstract: A tow of fibrous filter material for tobacco smoke is transported lengthwise through a so-called finger which is an elongated channel wherein the cross-sectional area of the tow is gradually reduced to that of the rod-like filler in the wrapper of a filter rod. The homogeneity of the tow is enhanced by introducing a compressed gas into longitudinally spaced apart gas admitting portions of the channel and by providing the channel with sets of openings for the evacuation of gas downstream of each gas admitting portion. The channel discharges a continuous homogenized tow into a wrapping mechanism wherein the tow is draped into a web of cigarette paper or the like, and the thus obtained filter rod is severed to yield a file of filter rod sections of unit length or multiple unit length.

Abstract: The invention refers to a ventilated filter cigarette comprising a tobacco rod, a wrapper for the tobacco rod and a filter ventilated through ventilation openings, including a coaxial filter element, comprising a filter core, a wrapper for the filter core, a filter jacket and a wrapper for the filter jacket, in which the material specifications of the tobacco rod and the filter and the dimensions of their individual components are designed to allow the smoke to flow mainly through the filter core (upon open ventilation zone) and when covering the ventilation openings, the smoke of the cigarette flows to a major degree through the filter jacket of the coaxial filter element.

Abstract: A cigarette having a filter rod which extends longitudinlly and coaxially through the cigarette cord of tobacco. A plurality of filter tags and rings are disposed through the tobacco cord, the quantity of each varied to strengthen or weaken the level of filtration. The filter rod having a concentric air passage channel longitudinally deposed along its length to increase the supply of fresh air available to the smoker.

Abstract: A device comprising a filter and a rod which is capable of insertion into a cigarette cord that has a preformed conduit extending concentrically along the longitudinal axis of the cord. The rod having a plurality of perforations along its entire length, allowing for a fresh air supply to be sucked into the rod and then intermingled through the tobacco. The filter being available in various numbers of filtering ring elements which allow for a selection of filtering strength. The device is made of materials that would allow it to be reusable. As the cigarette cord burns down, the increased supply of fresh air will result in a reduction in the percentages of particulate matter (tars, nicotine,etc). By varying the number of filters, the taste will selectively be controlled by the user.

Abstract: A device and process for using same is described for controlling free burn rate of a lit cigarette. The device is mountable on a cigarette and is adapted to permit insertion and movement of the cigarette into the device. The device includes a unit which controls rate of air diffusion to reduce supply of oxygen for supporting tobacco combustion by the lit cigarette coal. The structure for controlling rate of air diffusion is non-combustible at combustion temperature of a lit cigarette coal. By use of this device, the number of puffs per cigarette is greatly increased and, depending upon the selected design of the device for controlling free burn rate can reduce sidestream smoke emitted by a lit idle cigarette.

Abstract: A smoking article wrapper has discrete areas of reduced permeability for improving ignition proclivity characteristics of a smoking article. The reduced permeability areas define a gradually decreasing permeability profile in a burning direction of the smoking article such that permeability reduction in the reduced permeability areas increases from a minimum reduction to a maximum permeability reduction in the burning direction of the smoking article.

Abstract: A filter which will be attached to the end of a smoking product such as a cigarette. It would have a normal filter connected to the tube of tobacco, with a dual chamber which holds fine tobacco dust particles in one chamber. The other chamber would contain a plurality of loose fibers and would be connected to another normal cigarette filter.

Abstract: Water disintegratability of a tobacco filter is improved by incorporating a super absorbent resin into a tobacco smoke filter medium in a tobacco filter comprising a main constitutive element of the tobacco smoke filter medium, and a water-soluble polymer as a binder for shaping the constitutive element. The constitutive element includes particulate or fibrous cellulose and cellulose esters (e.g. cellulose acetate). The water-absorption ratio of the super absorbent resin is about 10 to 1,000 times, and the amount of the resin is about 0.05 to 50 parts by weight relative to 100 parts by weight of the main constitutive element of the tobacco smoke filter medium.

Abstract: A concentric smoking filter in which one of the filter media is a fibrous tow, such as fibrous cellulose acetate tow, and one of the filter media is a web material, such as paper, is provided. The filter improves the taste, particularly, of "ultra-light" cigarettes.

Abstract: A smoking article comprising a smoking rod, a filter and ventilation means incorporated in the filter and communicating with the outside of the smoking article, viscous fluid in the ventilation means closing or partially closing the ventilation means, the viscous fluid being displaceable during use of the smoking article enabling ventilation to occur.

Abstract: The invention relates to a segmented filter cigarette comprising a tobacco rod including at least two segments of differing tobacco fillings, a wrapping for said tobacco rod, and a filter, said at least two segments of said tobacco rod having a coaxial structure, each comprising an inner core of tobacco material, a wrapping for said inner core, a jacket of a different tobacco material and a wrapping for said jacket; the tobaccos of said inner cores of said segments have the same or a very similar condensate potential; the tobaccos of said jackets of said segments have the same or a very similar condensate potential which differs, however, from the condensate potential of said inner cores; by defining the resistances to draw of said inner cores and of said jackets of said segments and by adapting said filter it is achieved that the smoke is drawn substantially from the region having a high condensate potential of the first-burning segment during smoking of the segmented filter cigarette, and the smoke is drawn

Abstract: A cigarette having an improved carbon-bearing filter. A cigarette is provided with a smokable rod attached to a filter element having a region of carbon-bearing cellulose acetate tow surrounding a substantially impermeable member in the form of a hollow plastic tube crimped at the upstream end. As a result, the carbon-bearing region transitions from a circular cross-section to an annular cross-section. A plurality of circumferentially arranged holes are provided in the filter to permit dilution of the smoke passing through the filter. The resulting filter element provides reduction in gas phase components of smoke, dilution by ambient air and acceptable drawing characteristics.

Abstract: The invention relates to a coaxial tobacco cartridge with an inner core of a first tobacco blend, a sheath for the inner core, an outer jacket of a second tobacco blend, a sheath of high air permeability and an associated filter element. The coaxial tobacco cartridge is not smokable independently, but can be used by persons to make their own coaxial cigarettes, by inserting it in an appropriate cigarette-paper tube or wrapping it in a cigarette-paper strip.

Abstract: Significant decreases in sidestream smoke production, approximately 30 to 70%, are obtained when compared to a tobacco filler rod wrapped in a conventional cigarette paper by double-wrapping the filler rod, first with a relatively non-porous paper having a Coresta porosity of about 1 to about 10% and then with a conventional cigarette paper.

Abstract: A concentric smoking filter in which the peripheral filter medium is a fibrous tow, such as fibrous cellulose acetate tow, and the core filter medium is a web material, such as paper, loaded with carbon particles, is provided. The filter improves the taste, particularly, of "ultra-light" cigarettes.

Abstract: A cigarette having a region having means to reduce the vapour phase constituents of tobacco smoke, such as carbon, surrounding a tobacco smoke flow path is provided with ventilation means to channel the tobacco smoke away from the vapour phase constituent reducing region. The vapour phase constituent reductions achieved are greater than the reduction which would be expected in view of the degree of ventilation to which the cigarette is subjected.

Abstract: A vented filter cigarette with a filter having a fiber filter material and a plug wrap paper wrapping the fiber filter material, a tobacco rod, and tipping paper having a plurality of pores and connecting the filter and the tobacco rod. An embossment is formed in a region of the plug wrap paper corresponding to the pores of the tipping paper. The embossment creates a slight gap between the tipping paper and the circumference of the filter around the pores, with the result that the tightness between the tipping paper and the circumference of the filter is loosened, the filter ventilation is increased, and the variation in the filter ventilation is decreased.

Abstract: The coaxial filter cigarette according to the invention contains of a coaxial rod portion and a coaxial filter element. The rod portion contains an inner core of a material glowing or smouldering substantially residue-free, in particular tobacco material, which is surrounded by a wrapper which in turn is surrounded by an outer jacket of a tobacco and/or non-tobacco material. A wrapper of an air-permeable material surrounds the outer jacket. The coaxial filter element has a filter core with an air-impermeable wrapper. A filter jacket having a diameter corresponding to the diameter of the outer jacket coaxially surrounds the filter core and its wrapper. An air-impermeable wrapper serving also to connect the rod portion and filter element surrounds the filter jacket. A ventilation zone is worked into the air-impermeable wrapper for the filter jacket.

Abstract: 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.

Abstract: The vented filter cigarette is produced by combining a filter having a highly air-permeable circumferential surface and a tipping paper having a plurality of pores. The tipping paper has an embossment in the area of the pores formed therein. The embossment serves to create a slight gap between the tipping paper and the circumferential surface of the filter, by which the tightness therebetween is loosened. Thus, the filter ventilation is increased, and the variation in the degree of the ventilation can be reduced.

Abstract: A cigarette includes a rod of smoking material, such as tobacco, to which is attached a mouthpiece that is substantially impervious to air and smoke except for an unfiltered axial bore or flow passage which extends through the mouthpiece. Unfiltered smoke flows from the rod to the interface between the rod and mouthpiece where it is substantially diluted with air and passes through the flow passage for delivery as unfiltered, air diluted smoke. The air dilution reduces the gas phase components of the unfiltered smoke thereby providing a smoother, better tasting cigarette.

Abstract: A concentric smoking filter in which the peripheral filter medium is a fibrous tow, such as fibrous cellulose acetate tow, and the core filter medium is a web material, such as paper, loaded with carbon particles, is provided. The filter improves the taste, particularly, of "ultra-light" cigarettes.

Abstract: A filter tip cigarette comprising a rod of smoking material having an inner wrapper of sidestream reducing paper containing carbon as part of its total filler content and an outer overwrapping cigarette paper, and a ventilated filter tip of low efficiency / high pressure drop which provides a mainstream CO / "tar" ratio of 1:0 or less in conjunction with the filter ventilation.

Abstract: The invention includes a non-pyrolytic cigarette, having an elongated tube of approximately the same, shape, dimensions, and weight of a traditional cigarette. The elongated tube contains two tobacco-filled chambers along its length and incorporates a filter at the end placed in the mouth of the user. The chambers contain pre-burned tobacco and unburned tobacco. A central air passageway communicates with the tobacco-containing chambers, and provides the taste, smell and sensation of a traditional cigarette as air is drawn through the tube and is delivered to the user. Additionally, a multiplicity of nicotine-containing ampules located within the mouth filter release liquid nicotine into the mouth of the user when pressure is applied to the filter.

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: 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: The present invention provides improved cigarettes and other smoking articles in which the substrate is a cellulosic material, preferably paper or a paper-like material, e.g., tobacco paper. The substrate of the present invention is used to retain flavorants and the aerosol forming materials, which upon exposure to heated air passing through the aerosol generating means during smoking, are vaporized and delivered to the user as a smoke-like aerosol.

Abstract: Filter tow comprising crimped spun fibers and/or filaments is prepared in a preparation zone and fed to a processing zone where it is gathered, in an intake zone, then wrapped and cut into tobacco smoke filter rods. In the region of the intake zone, a gas or vapor under elevated pressure acts on the filter tow at an angle of less than 90.degree. to the longitudinal axis of the filter tow in the direction of movement of the filter tow. The relevant apparatus includes a preparation unit and a processing unit, the latter unit for feeding a gas or vapor under elevated pressure to the filter tow in the direction of movement thereof including:an intake finger (14) having holes (17) in the wall thereof on the filter tow intake side, ora pipe (22), whose gas or vapor exit end 23 terminates in the region of the filter tow outlet side of the intake funnel (23) or the filter tow intake side of the intake finger (14), ora blowing device (27) immediately upstream of the filter tow intake side of the intake finger (14).

Abstract: A cigarette filter having a core of synthetic fibrous filter material and an outer plug wrap is provided with a group of longitudinal bores and a group of peripheral channels in the core to improve the filtration efficiency and to balance the distribution of smoke flow over the cross-sectional area of the filter.

Abstract: A filter cigarette comprising a tobacco rod and filter portion comprising a fluted tubular extrusion. The flutes are blocked intermediate the rod end and mouth end of the extrusion. The tobacco rod is circumferentially wrapped with a porous wrapper comprising a longitudinal band of perforations. The fluted tubular extrusion is attached with tipping paper to the tobacco rod. A mouthband and a rodband of perforations circumscribes the tipping paper. A rod of charcoal-impregnated filter material may abut the tubular extrusion.

Abstract: There is disclosed a wrapper for a smoking article, the wrapper comprising a single paper sheet. The sheet is formed from at least two webs. The webs are combined whilst at least one web is still in its wet stage of production prior to drying. Different stocks can be used to make the webs so as to impart different qualities.

Abstract: The calcium carbonate filler level or the basis weight of a paper wrapper for a smoking article is varied to enable the designing of smoking articles with specific characteristics including a specific puff count, tar delivery and carbon monoxide delivery.

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 a cellulosic base web and 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 an air permeability of below about 8 CORESTA units. The cigarette is capable of sustaining smolder under FTC smoking conditions while yielding very low levels of visible sidestream smoke.

Abstract: A tipped smoking rod comprising a tobacco rod 2, a filter tip 1 adjacent one end of the tobacco rod which comprises a filter body 3 enclosed within plugwrap material 4, and a tipping overwrap 6 material around the filter tip and the said adjacent end of the tobacco rod, wherein both the plugwrap and the tipping overwrap each comprise a pattern of perforations 7,8 which are selected to give an area of overlap of perforations of at least 0.2 mm.sup.2 which is substantially unaffected by the relative positions of the plugwrap and tipping overwrap.

Abstract: Cigarettes which yield low levels of visible sidestream smoke upon use employ an outer paper wrapping material including magnesium hydroxide, calcium carbonate and flax fibers. The outer wrapping material has an inherent permeability of about 10 CORESTA units. The wrapping material contains an amount of water soluble alkali metal salt sufficient to provide at least about 30 mg water soluble alkali metal ions per gram of dry base web. The alkali metal salt normally is such that the wrapping material includes a significantly greater level of potassium ions than sodium ions. The cigarettes also employ an inner paper wrapping material including carbonaceous material and/or tobacco.

Abstract: A container for containing an additive material for modifying the characteristics of a smoking article. The container contains at least two components that are movable between a first position and a second position with respect to each other. In the first position the additive material is hermetically sealed inside the container during storage of the smoking article prior to use. The container is activated by moving the components of the container to the second position to provide air flow pathways through the container so that the additive material can modify the smoking article accordingly. The components may have perforations that are covered by cooperating overlapping portions of the components of the container in the first position and uncovered in the second position. Alternately, the container may include a sealed capsule containing the additive that is punctured by moving the components during activation.

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 a cellulosic base web, tobacco, and magnesium oxide and/or magnesium hydroxide 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 an air permeability of below about 8 CORESTA units. The cigarette is capable of sustaining smolder under FTC smoking conditions while yielding very low levels of visible sidestream smoke.

Abstract: An improved tobacco filter or plug wrap is made by calendering ultraporous paper. The calendering process reduces surface irregularities, reduces the thickness of the paper, and reduces the porosity. In general, during the calendering step, the ultraporous paper should be reduced in thickness from about 0.1 mils. to about 2.5 mils.

Abstract: I disclose a flavor-enhancing smoking filter having at least two zones, including at least one filtering zone and at least one flavor-enhancing zone. The flavor-enhancing zone(s) have a flavorant, have a surface providing for the substantially laminar flow of smoke and permit the passage of none or a minority of the smoke drawn through the filter.

Abstract: A cigarette-holder is disclosed which is provided with a filter member as well as with a device for regulating draught, which device allows the amount of nicotine inhaled to be progressively reduced. The device comprises a small metallic pipe that holds, on one end, the cigarette. The pipe is inserted with the opposite end into the cigarette-holder containing a filter member. The filter member is made up of a small hollow cylinder of diameter less than the pipe diameter, and it obstructs the smoke flow into the cigarette-holder by leaving just a small through-hole and delimits an annular space wherein smoke becomes further cooled before being inhaled. The filter is also made up of a bowl-like plugging member that reduces the outlet cross section of the holder. The bottom of the bowl-like plugging member faces the end of the pipe containing the cigarette. The plugging member has cuts in its side wall and a peg-like terminal portion in its bottom.

Abstract: A heatseal porous plugwrap made with a naturally porous combiner wrap and spray-applied hot melt adhesive. The natural porosity of the combiner wrap paper and the superficial location of sprayed adhesive greatly inhibit the penetration of adhesive to the outer surface of the paper, thus minimizing the possibility that the adhesive will interfere with the tipping process. The use of a sprayer to apply the adhesive allows for only the required amount of adhesive to be utilized and thus eliminates waste.

Abstract: Cigarettes have a tobacco rod including smokable material circumscribed by a paper wrapper. The paper wrapper includes a cellulosic base web (e.g., flax and/or wood pulp fibers) and particles of at least one inorganic filler material. The inorganic filler material includes calcium sulfate, and normally fibers of calcium sulfate having an aspect ratio of about 30.

Abstract: Cigarettes which yield low levels of visible sidestream smoke upon use employ a paper wrapping material having about 25 weight percent magnesium hydroxide, about 15 weight percent calcium carbonate and about 60 weight percent flax. The wrapping material has an inherent permeability of about 20 CORESTA units. The wrapping material contains an amount of water soluble alkali metal salt sufficient to provide at least about 35 mg water soluble alkali metal ions per gram of dry base web. The alkali metal salt is such that the wrapping material includes a significantly greater level of potassium ions than sodium ions. The wrapping material includes at least one organic acid. The cigarette includes a filter element which has an organic acid incorporated therein. The cigarettes, when employed, provide cohesive ash which is not highly flakey.

Abstract: A simulated smoking article comprising a non-combustible hollow cylindrical body, a filter rod coaxially located at one end of the hollow cylindrical body and a combustible fuel element at the other end of the hollow cylindrical body. A hollow thermal conducting member is located between the fuel element and adjacent end of the cylindrical body. A porous substrate cylinder, which is impregnated with an aerosol generating material, is located within the cylindrical rod between the fuel element and the filter rod. A flow accelerating means is located next to the porous substrate cylinder facing the filter rod. Upstream of the porous substrate cylinder is as gas inlet chamber and downstream toward the filter rod is a gas/aerosol mixing chamber. A conventional cigarette wrapping paper circumscribes the smoking article.

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: 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: Cigarettes have filter elements which have a relatively low efficiency for filtering particulate matter of tobacco smoke and a relatively high pressure drop. Such filter elements are provided by shredding, gathering or pleating a sheet-like web of a paper which has a low air permeability and exhibits a pH above about 9. The paper used to provide the filter material of the filter elements incorporates a magnesium hydroxide filter.

Abstract: A cigarette wrapping paper includes a plurality of rows of perforations extending across the width of the paper wherein the rows of perforations are spaced at preselected distances along the entire length of the paper.

Abstract: A filter cigatette comprises a tobacco rod having a tobacco mixture with a low packing or filling density, a first filter element racing the tobacco rod, having a retention capacity of 40 to 80% and consisting of a fibrous material having a low single denier and a high total denier, a second filter element facing the mouth of the smoker and having a retention capacity of 15% at the maximum, and a hollow chamber formed between the two filter elements and having a length of 3 to 7 mm at an overall length of the filter between 18 and 30 mm. The two filter elements and the hollow chamber are surrounded by a paper wrapper and an air-permeable tipping paper with a ventilation zone in the region of the hollow chamber; said ventilation zone ensures a ventilation degree of 50 to 85% and is created on the finished cigarette by laser beams or by mechanically produced perforations through both papers.In this way a more intensive taste sensation can be achieved together with a low nicotine to condensate ratio.