US20050005947A1 - Smoking articles having reduced carbon monoxide delivery - Google Patents

Smoking articles having reduced carbon monoxide delivery Download PDF

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Publication number
US20050005947A1
US20050005947A1 US10/618,096 US61809603A US2005005947A1 US 20050005947 A1 US20050005947 A1 US 20050005947A1 US 61809603 A US61809603 A US 61809603A US 2005005947 A1 US2005005947 A1 US 2005005947A1
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United States
Prior art keywords
smoking article
carbon monoxide
reducing agent
wrapper
less
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
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US10/618,096
Inventor
Vladimir Hampl
Alice Gu
Kerry Mahone
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mativ Holdings Inc
Original Assignee
Schweitzer Mauduit International Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schweitzer Mauduit International Inc filed Critical Schweitzer Mauduit International Inc
Priority to US10/618,096 priority Critical patent/US20050005947A1/en
Assigned to SCHWEITZER-MAUDUIT INTERNATIONAL, INC. reassignment SCHWEITZER-MAUDUIT INTERNATIONAL, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GU, ALICE, HAMPL, JR., VLADIMIR, MAHONE, KERRY
Priority to BRPI0412513-4B1A priority patent/BRPI0412513B1/en
Priority to PCT/US2004/013656 priority patent/WO2005013733A2/en
Priority to CN2004800174525A priority patent/CN1809289B/en
Priority to EP04751179A priority patent/EP1643868A2/en
Priority to JP2006520153A priority patent/JP4681547B2/en
Publication of US20050005947A1 publication Critical patent/US20050005947A1/en
Priority to US12/509,197 priority patent/US8353301B2/en
Priority to US13/245,469 priority patent/US8443812B2/en
Abandoned legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18Treatment of tobacco products or tobacco substitutes
    • A24B15/28Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/287Treatment of tobacco products or tobacco substitutes by chemical substances by inorganic substances only
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18Treatment of tobacco products or tobacco substitutes
    • A24B15/28Treatment of tobacco products or tobacco substitutes by chemical substances
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18Treatment of tobacco products or tobacco substitutes
    • A24B15/28Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/281Treatment of tobacco products or tobacco substitutes by chemical substances the action of the chemical substances being delayed
    • A24B15/282Treatment of tobacco products or tobacco substitutes by chemical substances the action of the chemical substances being delayed by indirect addition of the chemical substances, e.g. in the wrapper, in the case
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00Cigars; Cigarettes
    • A24D1/02Cigars; Cigarettes with special covers
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00Cigars; Cigarettes
    • A24D1/02Cigars; Cigarettes with special covers
    • A24D1/025Cigars; Cigarettes with special covers the covers having material applied to defined areas, e.g. bands for reducing the ignition propensity

Definitions

  • Smoking articles such as cigarettes are conventionally made by wrapping a column of tobacco in a white wrapping paper. At one end, the smoking article usually includes a filter through which the article is smoked. Filters are attached to smoking articles using a tipping paper that is glued to the white wrapping paper.
  • the wrapping papers and tipping papers used to construct smoking articles are typically made from flax or other cellulosic fiber and contain a filler, such as calcium carbonate.
  • the column of tobacco on the other hand, may contain shredded tobacco leaves alone or in combination with reconstituted tobacco.
  • Cigars typically do not include a filter although various varieties are available that do contain a filtered tip.
  • mainstream smoke contains a variety of constituents that, in combination, provide the smoking article with a particular taste.
  • mainstream smoke Some of the constituents contained in mainstream smoke, however, are scrutinized by government agencies and, therefore, may be undesirable in particular applications. For example, although carbon monoxide levels present in mainstream smoke are relatively low, the cigarette industry has recently been under significant pressure to reduce carbon monoxide levels even further. Such reduced levels may be necessary in the future in order to meet government regulations, such as in Europe or in the United States. As such, a need currently exists for a method of reducing carbon monoxide levels in smoking articles without interfering with the taste of the article or adversely affecting any other properties of the article.
  • the present invention is directed to smoking articles having reduced carbon monoxide delivery.
  • the present invention is directed to a smoking article containing a first component comprising a column of a smokable filler.
  • the smokable filler may be shredded tobacco material.
  • the tobacco material may include shredded tobacco leaves, reconstituted tobacco, or mixtures thereof.
  • the smoking article also includes a second component comprising a wrapper surrounding the column of the smokable filler.
  • the wrapper may have a single layer construction or a multi-layered construction.
  • the smoking article further contains a carbon monoxide reducing agent.
  • the carbon monoxide reducing agent is contained within the first component, the second component, or in both components.
  • the carbon monoxide reducing agent may be, for instance, a metal oxide or a metal carbonate.
  • the carbon monoxide reducing agent may be a Group VIII (as appearing on the periodic table) metal oxide, a Group VIII metal carbonate, or mixtures thereof.
  • the term “oxide” also refers to peroxides, hydroxides and the like.
  • the carbon monoxide reducing agent is present in the smoking article in an amount sufficient to reduce carbon monoxide delivery by at least about 10% in milligrams per smoking article.
  • carbon monoxide reducing agents that may be used in the present invention include cobalt oxide, cobalt carbonate, calcium peroxide, palladium oxide, and platinum oxide.
  • a hydrated ferric oxide is used as the carbon monoxide reducing agent.
  • Smoking articles made in accordance with the present invention may have a carbon monoxide delivery of less than about 15 mg per smoking article, such as less than 12 mg per smoking article or even less than about 10 mg per smoking article.
  • the smoking articles may have an average carbon monoxide per puff of less than about 1.75 mg, such as less than about 1.5 mg, 1.25 mg, or even less than about 1.0 mg.
  • the smoking articles can have a carbon monoxide to tar ratio of less than 1, such as less than 0.7 or less than 0.5.
  • the carbon monoxide reducing agent may be added to one or more components of the smoking article.
  • the carbon monoxide reducing agent is blended with the column of smokable filler.
  • the carbon monoxide reducing agent may also be contained in the wrapper.
  • the carbon monoxide reducing agent may be contained in a single layer paper wrapper that forms the exterior surface of the smoking article.
  • the paper wrapper may be made from pulp fibers and may contain a filler, such as calcium carbonate in addition to the carbon monoxide reducing agent.
  • the wrapper may have a permeability of from about 15 Coresta units to about 110 Coresta units and may have a basis weight of about 15 gsm to about 60 gsm.
  • the wrapper may include an outer layer and an inner layer.
  • the carbon monoxide reducing agent may be contained in the inner wrapper.
  • the inner wrapper may be made from pulp fibers or may be a web of reconstituted tobacco.
  • a wrapper refers to and includes any web-like material that surrounds the smokable filler.
  • These smoking articles typically include lower permeability areas contained within the wrapper of the article at selected locations.
  • the low permeability areas create a burn mode index range within the wrapper sufficient to reduce ignition proclivity by reducing oxygen to a smoldering coal of the smoking article as the coal burns and advances into the low permeability areas.
  • the low permeability areas may have a tendency to increase the amount of carbon monoxide produced in the mainstream of the smoke of the article.
  • the teachings of the present invention are particularly well suited for use in combination with the above described smoking articles having reduced ignition proclivity properties.
  • the present invention in one embodiment, is directed to a smoking article containing low permeability areas at selected locations.
  • the low permeability areas may comprise bands surrounding a smokable filler that extend either in a direction perpendicular to the axis of the article or parallel to the axis of the article.
  • the bands can be made, for instance, from a cellulosic material that is deposited on the wrapper.
  • a film-forming substance may also be applied to the wrapper in order to form the low permeability areas.
  • the low permeability areas are applied to the wrapper such that the wrapper has a BMI of less than about 8 cm ⁇ 1 within the low permeability areas.
  • the smoking article may also be produced having a carbon monoxide delivery of less than about 15 mg per smoking article, particularly less than 12 mg per smoking article, and in one embodiment, can have a carbon monoxide delivery of less than 10 mg per smoking article.
  • the smoking article can also have a carbon monoxide to tar ratio of less than about 1.
  • the above smoking article can obtain the above characteristics through the use of a carbon monoxide reducing agent as described above and hereinafter.
  • FIG. 1 is a perspective view of one embodiment of a smoking article made in accordance with the present invention.
  • FIG. 2 is a disassembled perspective view of the smoking article illustrated in FIG. 1 ;
  • FIG. 3 is a disassembled perspective view of another embodiment of a smoking article made in accordance with the present invention.
  • FIG. 4 is a disassembled perspective view of still another embodiment of a smoking article made in accordance with the present invention.
  • FIG. 5 is a disassembled perspective view of another embodiment of a smoking article made in accordance with the present invention.
  • the present invention is directed to smoking articles having reduced carbon monoxide delivery.
  • the present inventors have discovered that the amount of carbon monoxide contained in mainstream smoke can be reduced in a smoking article by adding to the smoking article a carbon monoxide reducing agent, such as a metal oxide or a metal carbonate.
  • the carbon monoxide reducing agent may be added to the smoking article in an amount sufficient to reduce the carbon monoxide delivery by at least 10%, particularly by at least 20%.
  • the carbon monoxide delivery can be reduced by greater than about 40%.
  • the carbon monoxide reducing agent in the present invention also reduces the carbon monoxide to tar ratio and maintains the ratio within desired ranges.
  • the carbon monoxide to tar ratio may be decreased by about 10%, such as by greater than about 20%.
  • smoking articles and particularly cigarettes may be made according to the present invention having a carbon monoxide delivery of less than about 15 mg per smoking article, such as less than about 12 mg per smoking article.
  • smoking articles may be produced having a carbon monoxide delivery of less than about 10 mg per smoking article.
  • the smoking articles may have an average carbon monoxide delivery per puff of less than about 1.75 mg, less than about 1.5 mg, and less than about 1.25 mg.
  • the smoking article can have a carbon monoxide delivery per puff of less than about 1.0 mg.
  • the smoking article may have a carbon monoxide to tar ratio of less than about 1, such as less than about 0.7.
  • the smoking article may have a carbon monoxide to tar ratio of less than about 0.5.
  • the carbon monoxide reducing agent of the present invention may be a metal oxide or a metal carbonate. More particularly, the present invention is directed to metal oxides in metal carbonates that are capable of reducing carbon monoxide levels when contained in a smoking article. To discern whether or not a particular metal oxide or metal carbonate reduces carbon monoxide and mainstream smoke, a selected metal oxide or metal carbonate may be added to a smoking article and the smoking article may be tested according to standard tests as described in the examples below.
  • the carbon monoxide reducing agent may be a metal oxide or a metal carbonate containing a Group VIII metal as appearing on the periodic table.
  • the metal can be, for instance, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, or mixtures thereof.
  • metal oxides and metal carbonates that may be used according to the present invention include cobalt oxide, cobalt carbonate, calcium peroxide, palladium oxide, platinum oxide, and mixtures thereof.
  • an iron oxide may be used as the carbon monoxide reducing agent.
  • the iron oxide may be, for instance, ferric oxide.
  • ferric oxide associated with a water molecule is used (FeOOH). This particular ferric oxide has a yellow color and may be identified as hydrated ferric oxide.
  • Yellow ferric oxide is commercially available, for instance, from Rockwood Pigments NA, Inc. of Beltsville, Md., under the trade name MAPICO yellow 1135, which is a high-purity synthetic iron oxide yellow.
  • the synthetic iron oxide yellow is also referred to as Pigment Yellow 42 and is listed under Cas. No. 51274-00-1.
  • the particle size of the carbon monoxide reducing agent is not believed to be critical. For most applications, however, the median particle size should be less than about 10 microns, such as less than about 5 microns. For example, in one embodiment, the particle size of the carbon monoxide reducing agent may be from about 0.01 microns to about 3 microns.
  • the smoking article is a cigarette 10 .
  • the cigarette 10 includes a column of a smokable filler 12 surrounded by a wrapper 14 .
  • the cigarette 10 further includes a filter 16 .
  • the filter 16 is attached to the cigarette 10 using a tipping paper 18 .
  • a carbon monoxide reducing agent is incorporated into the smoking article.
  • the carbon monoxide reducing agent may be incorporated into the wrapper 14 , the smokable filler 12 , or may be contained in both the wrapper and the smokable filler.
  • the wrapper 14 in this embodiment can be made from cellulosic fibers obtained, for instance, from flax, softwood or hardwood.
  • various mixtures of cellulosic fibers can be used.
  • the extent to which the fibers are refined can also be varied.
  • the permeability of the wrapper can generally be from about 10 Coresta units to about 200 Coresta units. In some applications, the permeability can be between about 15 Coresta units to about 55 Coresta units.
  • the basis weight of the wrapper may be from about 15 gsm to about 60 gsm, and more particularly, between about 18 gsm to about 40 gsm. Wrappers made according to the present invention can be made within any of the above ranges.
  • the wrapper may also be treated with a burn control additive, which may also serve as an ash conditioner.
  • burn control additives can include, for instance, alkali metal salts, acetates, phosphate salts or mixtures thereof.
  • the burn control additive may be potassium citrate, and/or sodium citrate.
  • the burn control additive can be added to the wrapper in an amount from about 0.3% to about 5% by weight, and more particularly, from about 0.3% to about 2.5% by weight.
  • the wrapper 14 may also contain a filler.
  • the filler can be, for instance, calcium carbonate, magnesium oxide, or any other suitable material.
  • the total filler loading added to the wrapper can be between about 10% to about 40% by weight.
  • the carbon monoxide reducing agent may completely replace or partially replace the filler.
  • the carbon monoxide reducing agent may be added to the paper wrapper in an amount of at least about 3%, such as in an amount of at least about 5%, by weight. In other embodiments, greater amounts can also be added including amounts greater than 10%, greater than 20%, greater than 30%, or even greater than 40%.
  • the wrapper may contain a filler and a carbon monoxide reducing agent in a total amount of from about 10% to about 60% by weight.
  • the relative weight of either additive within the above range can vary.
  • the amount of filler can remain constant and simply be combined with the carbon monoxide reducing agent, as long as the carbon monoxide reducing agent does not adversely interfere with any of the properties of the paper.
  • the carbon monoxide reducing agent When incorporated into the wrapper, similar to the filler, the carbon monoxide reducing agent may be combined with cellulosic fibers during formation of the paper. In an alternative embodiment, however, the carbon monoxide reducing agent may be applied topically to the wrapper after the wrapper is formed.
  • a binder may be needed in order to secure the carbon monoxide reducing agent to a surface of the wrapper.
  • the binder can be, for instance, any suitable adhesive material, such as a starch adhesive, that is safe for use in a smoking articles and that does not adversely interfere with the enjoyment of the article.
  • Applying the carbon monoxide reducing agent to a surface of the wrapper may be beneficial in situations where the carbon monoxide reducing agent affects the color of the wrapper. For instance, iron oxides may be red or yellow in color. In order to prevent these carbon monoxide reducing agents from affecting the white color of the wrapper, the agents may be adhered to the underside of the wrapper prior to construction of the smoking article.
  • the carbon monoxide reducing agent can also be added to the column of smokable filler 12 .
  • the smokable filler 12 is generally made from tobacco alone or in combination with various other components.
  • the tobacco may include, for instance, tobacco stems, such as flue-cured stems, fines, and tobacco byproducts, reconstituted tobacco, tobacco extracts, blends thereof, and other tobacco-containing materials. As shown in FIG. 2 , the tobacco materials are usually chopped or shredded and then formed into the column 12 .
  • the carbon monoxide reducing agent When contained in the smokable filler 12 , the carbon monoxide reducing agent may be added in amounts sufficient to decrease carbon monoxide levels by any desirable amount, such as by reducing carbon monoxide levels by at least 10%, such as at least 20%.
  • the amount of the carbon monoxide reducing agent added to the smokable filler 12 depends on the particular carbon monoxide reducing agent selected and the desired result. In some applications, for instance, the carbon monoxide reducing agent may be added to the column of smokable filler 12 in an amount greater than about 3% by weight, in an amount greater than about 5% by weight, or in an amount greater than about 10% by weight. In one embodiment, the carbon monoxide reducing agent may be added to the column of smokable filler 12 in an amount from about 3% by weight td about 40% by weight. Greater amounts, however, may be desired. Further, lesser amounts than about 3% may also be desired, especially in applications where a carbon monoxide reducing agent is also contained in other components of the smoking article.
  • the carbon monoxide reducing agent When added to the column of smokable filler 12 , the carbon monoxide reducing agent may simply be blended with the filler during formation of the column or of the smoking article. If desired, the carbon monoxide reducing agent may be added as a solution or may be combined with the smokable filler in conjunction with a binder.
  • FIG. 3 another embodiment of a smoking article generally 110 made in accordance with the present invention is shown.
  • the smoking article 110 includes a column of smokable filler 112 , a wrapper 114 , and a filter 116 .
  • the wrapper 114 includes an outer wrapper 118 and an inner wrapper 120 .
  • a carbon monoxide reducing agent is incorporated into the inner wrapper 120 for reducing carbon monoxide emissions by the smoking article when lit.
  • the carbon monoxide reducing agent may have a particular color that changes the appearance of the outer wrapper 118 when present.
  • hydrated ferric oxide has a yellow color that may produce a yellow outer wrapper if incorporated into the wrapper in certain amounts.
  • colorizing the outer wrapper may produce a smoking article having an aesthetically appealing appearance.
  • the inner wrapper 120 may be a highly permeable paper web that acts as a carrier for the carbon monoxide reducing agent.
  • the inner wrapper 120 may have an air permeability of at least 500 Coresta units, such as at least 1000 Coresta units.
  • the inner wrapper 120 may have a permeability of greater than about 1500 Coresta units, or even greater than about 3000 Coresta units.
  • the inner wrapper may be perforated.
  • the basis weight of the inner wrapper 120 is also relatively low.
  • the basis weight may be below 20 gsm, such as below about 16 gsm.
  • the inner wrapper 120 may be made from cellulosic fibers and may contain the carbon monoxide reducing agent alone or in conjunction with a filler.
  • the smoking article 210 includes a column of smokable filler 212 , a wrapper 214 , and a filter 216 .
  • the smoking article 210 further includes an inner wrapper 230 surrounding the smokable filler 212 that is made from, for instance, a web of reconstituted tobacco.
  • the carbon monoxide reducing agent may be added to the web of reconstituted tobacco. Similar to the embodiment in FIG. 3 , adding the carbon monoxide reducing agent to a web of reconstituted tobacco may prevent any discolorations in the outer wrapper 214 .
  • a tobacco furnish containing tobacco stems e.g., flue-cured stems
  • fines and/or other tobacco by-products from tobacco manufacturing processes is initially mixed with a solvent (e.g., water and/or other compounds).
  • a solvent e.g., water and/or other compounds
  • various solvents that are water-miscible such as alcohols (e.g., ethanol)
  • alcohols e.g., ethanol
  • the water content of the aqueous solvent can, in some instances, be greater than 50% by weight of the solvent, and particularly greater than 90% by weight of the solvent.
  • Deionized water, distilled water or tap water may be employed.
  • the amount of the solvent in the suspension can vary widely, but is generally added in an amount from about 75% to about 99% by weight of the suspension. However, the amount of solvent can vary with the nature of the solvent, the temperature at which the extraction is to be carried out, and the type of tobacco furnish.
  • a soluble portion of the furnish mixture may be optionally separated (e.g., extracted) from the mixture.
  • the aqueous solvent/tobacco furnish mixture can be agitated during extraction by stirring, shaking or otherwise mixing the mixture in order to increase the rate of extraction.
  • extraction is carried out for about one-half hour to about 6 hours.
  • typical extraction temperatures range from about 10° C. to about 100° C.
  • the insoluble, solids portion can optionally be subjected to one or more mechanical refiners to produce a fibrous pulp.
  • suitable refiners can include disc refiners, conical refiners, and the like.
  • the pulp from the refiner can then be transferred to a papermaking station (not shown) that includes a forming apparatus, which may include, for example, a forming wire, gravity drain, suction drain, felt press, Yankee dryer, drum dryers, etc.
  • a forming apparatus the pulp is laid onto a wire belt forming a sheet-like shape and excess water is removed by the gravity drain and suction drain and presses.
  • the soluble portion can optionally be concentrated using any known type of concentrator, such as a vacuum evaporator.
  • the soluble portion can then be recombined with the web to form reconstituted tobacco (filler or binder-wrapper).
  • the soluble portion can be reapplied to the sheet, using various application methods, such as spraying, using sizing rollers, saturating, and the like.
  • Reconstituted tobacco can generally be formed in a variety of ways. For instance, in one embodiment, band casting can be utilized to form the reconstituted tobacco. Band casting typically employs a slurry of finely divided tobacco parts and a binder that is coated onto a steel band and then dried. After drying, the sheet is blended with natural tobacco strips or shredded and used in various tobacco products, including as a cigarette filler.
  • Reconstituted tobacco can also be formed by a papermaking process. Some examples of processes for forming reconstituted tobacco according to this process are described in U.S. Pat. Nos. 3,428,053; 3,415,253; 3,561,451; 3,467,109; 3,483,874; 3,860,012; 3,847,164; 4,182,349; 5,715,844; 5,724,998; and 5,765,570; which are also incorporated herein in their entirety by reference thereto for all purposes.
  • the formation of reconstituted tobacco using papermaking techniques can involve the steps of mixing tobacco with water, extracting the soluble ingredients therefrom, concentrating the soluble ingredients, refining the tobacco, forming a web, reapplying the concentrated soluble ingredients, drying, and threshing.
  • the fibrous sheet material can, in some embodiments, then be dried using, for example, a tunnel dryer, to provide a sheet having a typical moisture content of less than 20% by weight, and particularly from about 9% to about 14% by weight. Subsequently, the sheet can be cut to a desired size and/or shape and dried to the desired final moisture content.
  • a carbon monoxide reducing agent may be incorporated into the reconstituted tobacco web.
  • the web may then be used as an inner wrapper 230 as shown in FIG. 4 .
  • the amount of the carbon monoxide reducing agent added to the reconstituted tobacco web 230 may depend on various factors. In general, the carbon monoxide reducing agent may be added to the reconstituted tobacco web in an amount from about 3% to about 40% by weight, such as from about 15% to about 35% by weight. Greater or lesser amounts, however, may be desired in certain applications. In fact, in one embodiment, greater that 50% by weight of the carbon monoxide reducing agent may be incorporated into the reconstituted tobacco web 230 .
  • the reconstituted tobacco When incorporated into reconstituted tobacco as described above, the reconstituted tobacco may form an inner wrapper 230 as shown in FIG. 4 . Alternatively, the reconstituted tobacco may be shredded and formed into the smokable filler 212 .
  • FIG. 5 Still another embodiment of a smoking article generally 310 made in accordance with the present invention as shown in FIG. 5 .
  • the smoking article 310 includes a column of smokable filler 312 , a wrapper 314 , and a filter 316 .
  • the wrapper 314 includes low permeability areas 340 that form bands on the wrapper 314 .
  • the lower permeability areas 340 produce a smoking article having improved ignition proclivity control characteristics.
  • “Ignition proclivity” is a measure of the tendency of the smoking article or cigarette to ignite a flammable substrate if the burning cigarette is dropped or otherwise left on a flammable substrate.
  • a test for ignition proclivity of a cigarette has been established by NIST (National Institute of Standards and Technology) and is generally referred to as the “Mock-Up Ignition Test”.
  • the test comprises placing a smoldering cigarette on a flammable test fabric and recording the tendency of the cigarette to either ignite the test fabric, burn the test fabric beyond a normal char line of the fabric, burn its entire length without igniting the fabric, or self-extinguish before igniting the test fabric or burning its entire length.
  • Cigarette Extension Test Another test for ignition proclivity is referred to as the “Cigarette Extension Test”.
  • Cigarette Extension Test a lit cigarette is placed on one or more layers of a filter paper. If the cigarette self-extinguishes, the cigarette passes the test. If the cigarette burns all the way to its end on the filter, however, the cigarette fails. Smoking articles made in accordance with this embodiment of the present invention can be designed to pass one or both of these tests.
  • the wrapper 314 includes the lower permeability areas 340 .
  • the lower permeability areas 340 form bands on the wrapper 314 .
  • the bands are perpendicular to the axis of the cigarette 310 .
  • the bands may be parallel to the axis of the smoking article or may be placed on the wrapper 314 in a spiral arrangement.
  • the lower permeability areas 340 may appear on the wrapper 314 in any type of suitable pattern that includes the lower permeability areas 340 separated by or placed in conjunction with relatively higher permeability areas 342 .
  • the lower permeability areas 340 form bands that are spaced apart from each other longitudinally along the length of the wrapper 314 .
  • the lower permeability areas 340 are essentially invisible in the formed cigarette. In other words, a smoker may not discern from any outward sign that the wrapper 314 includes the lower permeability areas 340 .
  • the width and spacing of the bands are dependent upon a number of variables, such as the initial permeability of the wrapper 314 , density of the tobacco column 312 , etc.
  • the bands have a width so that oxygen is limited to the burning coal for a sufficient length of a period of time to extinguish the coal. In other words, if the bands were too narrow, the burning coal would burn through the bands before self-extinguishing when placed on an adjacent surface.
  • the bands may have a width of at least 3 millimeters, such as from about 5 millimeters to about 10 millimeters.
  • the spacing between the bands is also a factor of a number of variables. The spacing should not be so great that a cigarette burns for a sufficient length of time to ignite a substrate before the coal ever burns into a lower permeability area.
  • the spacing between the bands also affects the thermal inertia of the burning coal, or the ability of the coal to burn through the bands without self-extinguishing. In general, band spacings of between about 1 millimeter to about 30 millimeter are appropriate and particularly, between about 10 millimeters to about 25 millimeters.
  • the lower permeability areas 340 have a permeability within a range that is known to provide improved ignition proclivity characteristics for the cigarette 310 .
  • the lower permeability areas may have a permeability of less than about 20 Coresta units, such as less than about 12 Coresta units.
  • the lower permeability areas 340 may have a permeability within a range of from about 2 Coresta units to about 8 Coresta units.
  • Burn Mode Index another measurement that can be used to indicate reduced ignition proclivity properties is Burn Mode Index.
  • the Burn Mode Index of a wrapper can be more accurate in indicating the burning characteristics of a wrapper as opposed to simply measuring the permeability of the wrapper. The test for determining Burn Mode Index is explained in U.S. Pat. No. 4,739,775 to Hampl, which is incorporated herein by reference.
  • the Burn Mode Index of the lower permeability areas 340 can be generally less than about 8 cm ⁇ 1 , and particularly, from about 1 cm ⁇ 1 to about 5 cm ⁇ 1 .
  • the Burn Mode Index of the lower permeability areas can be from about 1 cm ⁇ 1 to about 3 cm ⁇ 1 .
  • the lower permeability areas 340 may be formed on the wrapper 314 in various ways.
  • the lower permeability areas 340 may be formed in integral with the wrapper 314 by, for instance, densifying the wrapper or providing the wrapper with thickened areas.
  • the lower permeability areas 340 may be formed from a cellulosic material.
  • a separate paper web may be laminated to the wrapper 314 .
  • a cellulosic composition may be deposited directly onto the wrapper 314 .
  • the lower permeability areas 340 may be formed by applying a film-forming composition to the wrapper 314 .
  • film-forming materials that can be used include alginates, guar, pectin, polyvinyl alcohol, cellulosic derivatives such as ethyl cellulose, methyl cellulose, and carboxymethyl cellulose, starch, starch derivatives, mixtures thereof, and the like.
  • Alginates can include, for instance, potassium alginate, sodium alginate, propylene glycol alginate, and/or mixtures thereof.
  • the film-forming composition can be printed or sprayed onto the wrapper 314 using any suitable process.
  • the lower permeability areas 340 produce a smoking article having reduced ignition proclivity characteristics.
  • the lower permeability areas 340 may increase the amount of carbon monoxide that is produced by the smoking article.
  • a carbon monoxide reducing agent may be incorporated into the wrapper 314 into the smokable filler 312 or into both components in order to reduce carbon monoxide emissions even in the presence of the lower permeability areas 340 .
  • a carbon monoxide reducing agent may be added to the smoking article in an amount sufficient to reduce carbon monoxide emissions by at least 10%.
  • the smoking article may have a carbon monoxide delivery of less than about 15 mg per smoking article and may have a carbon monoxide to tar ratio of less than 1.0. Further, the average carbon monoxide delivery per puff can be less than about 1.75 mg.
  • Hand sheets were made containing cellulosic fibers in combination with either a conventional filler or a carbon monoxide reducing agent in accordance with the present invention. All of the carbon monoxide reducing agents used in this example were forms of iron oxide.
  • ALBACAR 5970 calcium carbonate has a median particle size of about 1.9 microns.
  • Each of the hand sheets had a basis weight of about 30 gsm and contained the filler or the carbon monoxide reducing agent in an amount of about 30%.
  • the hand sheets had a permeability of 15 Coresta units.
  • Each of the trial papers was used to form cigarettes.
  • the cigarettes were tested using a Model R04 Smoking Machine, manufactured by Borgwaldttechnik GmbH of Hamburg, Germany, which staged a 35 mL, 2 second puff of the cigarette through a pre-weighed Cambridge Filter pad once every minute. The process continued until the embers of the cigarette were 3 mm from the edge of the tipping paper for the filter. The number of puffs required to reach the designated distance from the tipping paper was deemed the puff count.
  • the Cambridge Filter pad now containing a brown smoke stain, was removed from the smoking machine and reweighed.
  • the difference in weight of the filter pad before and after testing is the amount of wet tar delivered in the mainstream smoke, designated in mg/cigarette.
  • the filter pad was then subjected to a gas chromatograph analysis, which determined the percent water and the percent nicotine on the used filter pad. These values were converted to mass values and subtracted from the mass of wet tar to determine the mass of dry tar, also designated in mg/cigarette.
  • the mainstream smoke was collected and analyzed by a Model C21 Carbon Monoxide Analyzer, manufactured by Borgwaldttechnik GmbH of Hamburg, Germany. The percentage of carbon monoxide in the smoke was determined and then converted to units of mg/cigarette with respect to the total amount of mainstream smoke.
  • hand sheets were made all having a total filler loading of about 30% by weight.
  • the hand sheets had a permeability of about 20 Coresta units and had a basis weight of about 30 gsm.
  • the control contained ALBACAR 5970 calcium carbonate in an amount of 30% by weight.
  • Three other hand sheets were constructed in accordance with the present invention.
  • a portion of the calcium carbonate filler was replaced by hydrated iron oxide.
  • the calcium carbonate was completely replaced by hydrated iron oxide.
  • hand sheets were constructed containing various carbon monoxide reducing agents in accordance with the present invention.
  • the hand sheets were compared to a control. All of the hand sheets had a 30% total filler loading, had a permeability of about 25 Coresta units, and had a basis weight of about 30 gsm.
  • the control contained ALBACAR 5970 calcium carbonate.
  • Example 2 above was repeated. In this example, however, all of the wrapping papers were made on commercial paper making machines as opposed to being hand sheets made in a laboratory.

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  • General Chemical & Material Sciences (AREA)
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Abstract

The present invention is directed to smoking articles having reduced carbon monoxide delivery are described. A carbon monoxide reducing agent is incorporated into the smoking article in order to reduce carbon monoxide levels in mainstream smoke. The carbon monoxide reducing agent may be, for instance, in metal oxide or in metal carbonate. The carbon monoxide reducing agent may be incorporated into a wrapper and/or into a column of smokable filler that are used to construct the smoking article.

Description

    BACKGROUND OF THE INVENTION
  • Smoking articles such as cigarettes are conventionally made by wrapping a column of tobacco in a white wrapping paper. At one end, the smoking article usually includes a filter through which the article is smoked. Filters are attached to smoking articles using a tipping paper that is glued to the white wrapping paper. The wrapping papers and tipping papers used to construct smoking articles are typically made from flax or other cellulosic fiber and contain a filler, such as calcium carbonate. The column of tobacco, on the other hand, may contain shredded tobacco leaves alone or in combination with reconstituted tobacco.
  • Smoking articles such as cigars, on the other hand, are made by wrapping a plurality of tobacco leaves together. Cigars typically do not include a filter although various varieties are available that do contain a filtered tip.
  • When a smoking article is being enjoyed, a user puffs on one end of the smoking article after the smoking article has been lit on an opposite end. The smoke that is inhaled by the user is typically referred to as mainstream smoke. Mainstream smoke contains a variety of constituents that, in combination, provide the smoking article with a particular taste.
  • Some of the constituents contained in mainstream smoke, however, are scrutinized by government agencies and, therefore, may be undesirable in particular applications. For example, although carbon monoxide levels present in mainstream smoke are relatively low, the cigarette industry has recently been under significant pressure to reduce carbon monoxide levels even further. Such reduced levels may be necessary in the future in order to meet government regulations, such as in Europe or in the United States. As such, a need currently exists for a method of reducing carbon monoxide levels in smoking articles without interfering with the taste of the article or adversely affecting any other properties of the article.
  • SUMMARY OF THE INVENTION
  • In general, the present invention is directed to smoking articles having reduced carbon monoxide delivery. For example, in one embodiment, the present invention is directed to a smoking article containing a first component comprising a column of a smokable filler. The smokable filler may be shredded tobacco material. For example, the tobacco material may include shredded tobacco leaves, reconstituted tobacco, or mixtures thereof.
  • The smoking article also includes a second component comprising a wrapper surrounding the column of the smokable filler. The wrapper may have a single layer construction or a multi-layered construction.
  • In accordance with the present invention, the smoking article further contains a carbon monoxide reducing agent. The carbon monoxide reducing agent is contained within the first component, the second component, or in both components. The carbon monoxide reducing agent may be, for instance, a metal oxide or a metal carbonate. In one particular embodiment, the carbon monoxide reducing agent may be a Group VIII (as appearing on the periodic table) metal oxide, a Group VIII metal carbonate, or mixtures thereof. As used herein, the term “oxide” also refers to peroxides, hydroxides and the like. The carbon monoxide reducing agent is present in the smoking article in an amount sufficient to reduce carbon monoxide delivery by at least about 10% in milligrams per smoking article.
  • In particular, carbon monoxide reducing agents that may be used in the present invention include cobalt oxide, cobalt carbonate, calcium peroxide, palladium oxide, and platinum oxide. In one particular embodiment, a hydrated ferric oxide is used as the carbon monoxide reducing agent.
  • Smoking articles made in accordance with the present invention may have a carbon monoxide delivery of less than about 15 mg per smoking article, such as less than 12 mg per smoking article or even less than about 10 mg per smoking article. The smoking articles may have an average carbon monoxide per puff of less than about 1.75 mg, such as less than about 1.5 mg, 1.25 mg, or even less than about 1.0 mg. Additionally, the smoking articles can have a carbon monoxide to tar ratio of less than 1, such as less than 0.7 or less than 0.5.
  • The carbon monoxide reducing agent may be added to one or more components of the smoking article. For instance, in one embodiment, the carbon monoxide reducing agent is blended with the column of smokable filler. Alternatively, or in addition to being contained in the smokable filler, the carbon monoxide reducing agent may also be contained in the wrapper.
  • For example, in one embodiment, the carbon monoxide reducing agent may be contained in a single layer paper wrapper that forms the exterior surface of the smoking article. The paper wrapper may be made from pulp fibers and may contain a filler, such as calcium carbonate in addition to the carbon monoxide reducing agent. The wrapper may have a permeability of from about 15 Coresta units to about 110 Coresta units and may have a basis weight of about 15 gsm to about 60 gsm.
  • In another embodiment, the wrapper may include an outer layer and an inner layer. In this embodiment, the carbon monoxide reducing agent may be contained in the inner wrapper. The inner wrapper may be made from pulp fibers or may be a web of reconstituted tobacco. As used herein, a wrapper refers to and includes any web-like material that surrounds the smokable filler.
  • Recently, attention has also been focused on producing commercial smoking articles that have a reduced ignition proclivity, which is the tendency of a smoking article to ignite surfaces which come into contact with the lit article. Thus, those skilled in the art have been attempting to develop a smoking article that will continue to burn when left in the free air but will self-extinguish when dropped or left in a free burning state on a combustible material.
  • These smoking articles typically include lower permeability areas contained within the wrapper of the article at selected locations. The low permeability areas create a burn mode index range within the wrapper sufficient to reduce ignition proclivity by reducing oxygen to a smoldering coal of the smoking article as the coal burns and advances into the low permeability areas.
  • Unfortunately, the low permeability areas may have a tendency to increase the amount of carbon monoxide produced in the mainstream of the smoke of the article. In this regard, the teachings of the present invention are particularly well suited for use in combination with the above described smoking articles having reduced ignition proclivity properties.
  • In particular, the present invention, in one embodiment, is directed to a smoking article containing low permeability areas at selected locations. The low permeability areas, for instance, may comprise bands surrounding a smokable filler that extend either in a direction perpendicular to the axis of the article or parallel to the axis of the article. The bands can be made, for instance, from a cellulosic material that is deposited on the wrapper. Alternatively, a film-forming substance may also be applied to the wrapper in order to form the low permeability areas. In one embodiment, the low permeability areas are applied to the wrapper such that the wrapper has a BMI of less than about 8 cm−1 within the low permeability areas.
  • In accordance with the present invention, the smoking article may also be produced having a carbon monoxide delivery of less than about 15 mg per smoking article, particularly less than 12 mg per smoking article, and in one embodiment, can have a carbon monoxide delivery of less than 10 mg per smoking article. The smoking article can also have a carbon monoxide to tar ratio of less than about 1.
  • In accordance with the present invention, the above smoking article can obtain the above characteristics through the use of a carbon monoxide reducing agent as described above and hereinafter.
  • Other features and aspects of the present invention are discussed in greater detail below.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • A full and enabling disclosure of the present invention, including the best mode thereof to one skilled in the art, is set forth more particularly in the remainder of this specification, including reference to the accompanying figures in which:
  • FIG. 1 is a perspective view of one embodiment of a smoking article made in accordance with the present invention;
  • FIG. 2 is a disassembled perspective view of the smoking article illustrated in FIG. 1;
  • FIG. 3 is a disassembled perspective view of another embodiment of a smoking article made in accordance with the present invention;
  • FIG. 4 is a disassembled perspective view of still another embodiment of a smoking article made in accordance with the present invention; and
  • FIG. 5 is a disassembled perspective view of another embodiment of a smoking article made in accordance with the present invention.
  • Repeat use of reference characters in the present specification and drawings is intended to represent same or analogous features or elements of the present invention.
  • DETAILED DESCRIPTION
  • Reference will now be made in detail to present embodiments of the invention, one or more examples of which are set forth below. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment, can be used on another embodiment to yield a still further embodiment. Thus, it is intended that the present invention cover such modifications and variations as come within the scope of the appended claims and their equivalents.
  • In general, the present invention is directed to smoking articles having reduced carbon monoxide delivery. Specifically, the present inventors have discovered that the amount of carbon monoxide contained in mainstream smoke can be reduced in a smoking article by adding to the smoking article a carbon monoxide reducing agent, such as a metal oxide or a metal carbonate. The carbon monoxide reducing agent may be added to the smoking article in an amount sufficient to reduce the carbon monoxide delivery by at least 10%, particularly by at least 20%. For example, in one embodiment, the carbon monoxide delivery can be reduced by greater than about 40%.
  • In addition to reducing carbon monoxide, the carbon monoxide reducing agent in the present invention also reduces the carbon monoxide to tar ratio and maintains the ratio within desired ranges. For example, the carbon monoxide to tar ratio may be decreased by about 10%, such as by greater than about 20%.
  • In one embodiment, for instance, smoking articles and particularly cigarettes, may be made according to the present invention having a carbon monoxide delivery of less than about 15 mg per smoking article, such as less than about 12 mg per smoking article. In fact, smoking articles may be produced having a carbon monoxide delivery of less than about 10 mg per smoking article. In terms of carbon monoxide per puff, the smoking articles may have an average carbon monoxide delivery per puff of less than about 1.75 mg, less than about 1.5 mg, and less than about 1.25 mg. In one particular embodiment, the smoking article can have a carbon monoxide delivery per puff of less than about 1.0 mg.
  • Within the above ranges, the smoking article may have a carbon monoxide to tar ratio of less than about 1, such as less than about 0.7. For example, in one embodiment, the smoking article may have a carbon monoxide to tar ratio of less than about 0.5.
  • In general, the carbon monoxide reducing agent of the present invention may be a metal oxide or a metal carbonate. More particularly, the present invention is directed to metal oxides in metal carbonates that are capable of reducing carbon monoxide levels when contained in a smoking article. To discern whether or not a particular metal oxide or metal carbonate reduces carbon monoxide and mainstream smoke, a selected metal oxide or metal carbonate may be added to a smoking article and the smoking article may be tested according to standard tests as described in the examples below.
  • In one embodiment, the carbon monoxide reducing agent may be a metal oxide or a metal carbonate containing a Group VIII metal as appearing on the periodic table. The metal can be, for instance, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, or mixtures thereof. Particular examples of metal oxides and metal carbonates that may be used according to the present invention include cobalt oxide, cobalt carbonate, calcium peroxide, palladium oxide, platinum oxide, and mixtures thereof.
  • In one particular embodiment, an iron oxide may be used as the carbon monoxide reducing agent. The iron oxide may be, for instance, ferric oxide. In one particular embodiment, ferric oxide associated with a water molecule is used (FeOOH). This particular ferric oxide has a yellow color and may be identified as hydrated ferric oxide. Yellow ferric oxide is commercially available, for instance, from Rockwood Pigments NA, Inc. of Beltsville, Md., under the trade name MAPICO yellow 1135, which is a high-purity synthetic iron oxide yellow. The synthetic iron oxide yellow is also referred to as Pigment Yellow 42 and is listed under Cas. No. 51274-00-1.
  • In general, the particle size of the carbon monoxide reducing agent is not believed to be critical. For most applications, however, the median particle size should be less than about 10 microns, such as less than about 5 microns. For example, in one embodiment, the particle size of the carbon monoxide reducing agent may be from about 0.01 microns to about 3 microns.
  • Referring to FIGS. 1 and 2, one embodiment of a smoking article made in accordance with the present invention is shown. In this embodiment, the smoking article is a cigarette 10. The cigarette 10 includes a column of a smokable filler 12 surrounded by a wrapper 14. Although optional, in this embodiment, the cigarette 10 further includes a filter 16. The filter 16 is attached to the cigarette 10 using a tipping paper 18.
  • In order to reduce the amount of carbon monoxide produced by the smoking article when lit, according to the present invention, a carbon monoxide reducing agent is incorporated into the smoking article. For instance, the carbon monoxide reducing agent may be incorporated into the wrapper 14, the smokable filler 12, or may be contained in both the wrapper and the smokable filler.
  • In general, the wrapper 14 in this embodiment can be made from cellulosic fibers obtained, for instance, from flax, softwood or hardwood. In order to vary the properties of the paper as desired, various mixtures of cellulosic fibers can be used. The extent to which the fibers are refined can also be varied.
  • The permeability of the wrapper can generally be from about 10 Coresta units to about 200 Coresta units. In some applications, the permeability can be between about 15 Coresta units to about 55 Coresta units. The basis weight of the wrapper, on the other hand, may be from about 15 gsm to about 60 gsm, and more particularly, between about 18 gsm to about 40 gsm. Wrappers made according to the present invention can be made within any of the above ranges.
  • In many applications, the wrapper may also be treated with a burn control additive, which may also serve as an ash conditioner. Such burn control additives can include, for instance, alkali metal salts, acetates, phosphate salts or mixtures thereof. For example, in one embodiment, the burn control additive may be potassium citrate, and/or sodium citrate. The burn control additive can be added to the wrapper in an amount from about 0.3% to about 5% by weight, and more particularly, from about 0.3% to about 2.5% by weight.
  • For most applications, the wrapper 14 may also contain a filler. The filler can be, for instance, calcium carbonate, magnesium oxide, or any other suitable material. The total filler loading added to the wrapper can be between about 10% to about 40% by weight.
  • When the carbon monoxide reducing agent is present in the wrapper 14, the carbon monoxide reducing agent may completely replace or partially replace the filler. For instance, depending upon the particular carbon monoxide reducing agent selected and the desired result, the carbon monoxide reducing agent may be added to the paper wrapper in an amount of at least about 3%, such as in an amount of at least about 5%, by weight. In other embodiments, greater amounts can also be added including amounts greater than 10%, greater than 20%, greater than 30%, or even greater than 40%.
  • For many applications, as the amount of the carbon monoxide reducing agent is increased, the amount of filler contained in the wrapper is reduced. For instance, the wrapper may contain a filler and a carbon monoxide reducing agent in a total amount of from about 10% to about 60% by weight. The relative weight of either additive within the above range can vary.
  • It should be understood, however, that in other embodiments the amount of filler can remain constant and simply be combined with the carbon monoxide reducing agent, as long as the carbon monoxide reducing agent does not adversely interfere with any of the properties of the paper.
  • When incorporated into the wrapper, similar to the filler, the carbon monoxide reducing agent may be combined with cellulosic fibers during formation of the paper. In an alternative embodiment, however, the carbon monoxide reducing agent may be applied topically to the wrapper after the wrapper is formed. In this embodiment, a binder may be needed in order to secure the carbon monoxide reducing agent to a surface of the wrapper. The binder can be, for instance, any suitable adhesive material, such as a starch adhesive, that is safe for use in a smoking articles and that does not adversely interfere with the enjoyment of the article.
  • Applying the carbon monoxide reducing agent to a surface of the wrapper may be beneficial in situations where the carbon monoxide reducing agent affects the color of the wrapper. For instance, iron oxides may be red or yellow in color. In order to prevent these carbon monoxide reducing agents from affecting the white color of the wrapper, the agents may be adhered to the underside of the wrapper prior to construction of the smoking article.
  • Instead of or in addition to adding the carbon monoxide reducing agent to the wrapper 14, the carbon monoxide reducing agent can also be added to the column of smokable filler 12. The smokable filler 12 is generally made from tobacco alone or in combination with various other components. The tobacco may include, for instance, tobacco stems, such as flue-cured stems, fines, and tobacco byproducts, reconstituted tobacco, tobacco extracts, blends thereof, and other tobacco-containing materials. As shown in FIG. 2, the tobacco materials are usually chopped or shredded and then formed into the column 12.
  • When contained in the smokable filler 12, the carbon monoxide reducing agent may be added in amounts sufficient to decrease carbon monoxide levels by any desirable amount, such as by reducing carbon monoxide levels by at least 10%, such as at least 20%.
  • The amount of the carbon monoxide reducing agent added to the smokable filler 12 depends on the particular carbon monoxide reducing agent selected and the desired result. In some applications, for instance, the carbon monoxide reducing agent may be added to the column of smokable filler 12 in an amount greater than about 3% by weight, in an amount greater than about 5% by weight, or in an amount greater than about 10% by weight. In one embodiment, the carbon monoxide reducing agent may be added to the column of smokable filler 12 in an amount from about 3% by weight td about 40% by weight. Greater amounts, however, may be desired. Further, lesser amounts than about 3% may also be desired, especially in applications where a carbon monoxide reducing agent is also contained in other components of the smoking article.
  • When added to the column of smokable filler 12, the carbon monoxide reducing agent may simply be blended with the filler during formation of the column or of the smoking article. If desired, the carbon monoxide reducing agent may be added as a solution or may be combined with the smokable filler in conjunction with a binder.
  • Referring to FIG. 3, another embodiment of a smoking article generally 110 made in accordance with the present invention is shown. The smoking article 110 includes a column of smokable filler 112, a wrapper 114, and a filter 116. In this embodiment, the wrapper 114 includes an outer wrapper 118 and an inner wrapper 120. In accordance with the present invention, a carbon monoxide reducing agent is incorporated into the inner wrapper 120 for reducing carbon monoxide emissions by the smoking article when lit.
  • As discussed above, in some embodiments, the carbon monoxide reducing agent may have a particular color that changes the appearance of the outer wrapper 118 when present. For example, hydrated ferric oxide has a yellow color that may produce a yellow outer wrapper if incorporated into the wrapper in certain amounts. In some embodiments, colorizing the outer wrapper may produce a smoking article having an aesthetically appealing appearance. In other embodiments, however, it may be desirable to maintain the outer wrapper 118 white in color. In these embodiments, it may be preferable to include an inner wrapper 120 that contains the carbon monoxide reducing agent.
  • Double wrapped smoking articles are known in the art and are disclosed, for instance, in U.S. Pat. No. 5,143,099 which is incorporated herein by reference. For example, in one application, the inner wrapper 120 may be a highly permeable paper web that acts as a carrier for the carbon monoxide reducing agent. The inner wrapper 120, for instance, may have an air permeability of at least 500 Coresta units, such as at least 1000 Coresta units. For instance, the inner wrapper 120 may have a permeability of greater than about 1500 Coresta units, or even greater than about 3000 Coresta units. In order to increase the permeability of the inner wrapper, the inner wrapper may be perforated.
  • For many applications, the basis weight of the inner wrapper 120 is also relatively low. For instance, the basis weight may be below 20 gsm, such as below about 16 gsm. The inner wrapper 120 may be made from cellulosic fibers and may contain the carbon monoxide reducing agent alone or in conjunction with a filler.
  • Referring to FIG. 4, another embodiment of a smoking article generally 210 is shown. The smoking article 210 includes a column of smokable filler 212, a wrapper 214, and a filter 216. In this embodiment, however, the smoking article 210 further includes an inner wrapper 230 surrounding the smokable filler 212 that is made from, for instance, a web of reconstituted tobacco. According to the present invention, the carbon monoxide reducing agent may be added to the web of reconstituted tobacco. Similar to the embodiment in FIG. 3, adding the carbon monoxide reducing agent to a web of reconstituted tobacco may prevent any discolorations in the outer wrapper 214.
  • In order to produce a web of reconstituted tobacco, for instance, a tobacco furnish containing tobacco stems (e.g., flue-cured stems), fines and/or other tobacco by-products from tobacco manufacturing processes is initially mixed with a solvent (e.g., water and/or other compounds). For example, various solvents that are water-miscible, such as alcohols (e.g., ethanol), can be combined with water to form an aqueous solvent. The water content of the aqueous solvent can, in some instances, be greater than 50% by weight of the solvent, and particularly greater than 90% by weight of the solvent. Deionized water, distilled water or tap water may be employed. The amount of the solvent in the suspension can vary widely, but is generally added in an amount from about 75% to about 99% by weight of the suspension. However, the amount of solvent can vary with the nature of the solvent, the temperature at which the extraction is to be carried out, and the type of tobacco furnish.
  • After forming the solvent/tobacco furnish mixture, some or all of a soluble portion of the furnish mixture may be optionally separated (e.g., extracted) from the mixture. If desired, the aqueous solvent/tobacco furnish mixture can be agitated during extraction by stirring, shaking or otherwise mixing the mixture in order to increase the rate of extraction. Typically, extraction is carried out for about one-half hour to about 6 hours. Moreover, although not required, typical extraction temperatures range from about 10° C. to about 100° C.
  • Once extracted, the insoluble, solids portion can optionally be subjected to one or more mechanical refiners to produce a fibrous pulp. Some examples of suitable refiners can include disc refiners, conical refiners, and the like. The pulp from the refiner can then be transferred to a papermaking station (not shown) that includes a forming apparatus, which may include, for example, a forming wire, gravity drain, suction drain, felt press, Yankee dryer, drum dryers, etc. In such a forming apparatus, the pulp is laid onto a wire belt forming a sheet-like shape and excess water is removed by the gravity drain and suction drain and presses. Once separated from the insoluble portion of the tobacco solution, the soluble portion can optionally be concentrated using any known type of concentrator, such as a vacuum evaporator.
  • Although optional, the soluble portion can then be recombined with the web to form reconstituted tobacco (filler or binder-wrapper). Specifically, the soluble portion can be reapplied to the sheet, using various application methods, such as spraying, using sizing rollers, saturating, and the like. Reconstituted tobacco can generally be formed in a variety of ways. For instance, in one embodiment, band casting can be utilized to form the reconstituted tobacco. Band casting typically employs a slurry of finely divided tobacco parts and a binder that is coated onto a steel band and then dried. After drying, the sheet is blended with natural tobacco strips or shredded and used in various tobacco products, including as a cigarette filler. Some examples of process for producing reconstituted tobacco are described in U.S. Pat. Nos. 3,353,541; 3,420,241; 3,386,449; 3,760,815; and 4,674,519; which are incorporated herein in their entirety by reference thereto. Reconstituted tobacco can also be formed by a papermaking process. Some examples of processes for forming reconstituted tobacco according to this process are described in U.S. Pat. Nos. 3,428,053; 3,415,253; 3,561,451; 3,467,109; 3,483,874; 3,860,012; 3,847,164; 4,182,349; 5,715,844; 5,724,998; and 5,765,570; which are also incorporated herein in their entirety by reference thereto for all purposes. For example, the formation of reconstituted tobacco using papermaking techniques can involve the steps of mixing tobacco with water, extracting the soluble ingredients therefrom, concentrating the soluble ingredients, refining the tobacco, forming a web, reapplying the concentrated soluble ingredients, drying, and threshing.
  • In addition, various other ingredients, such as flavor or color treatments, can also be applied to the web. If applied with the soluble portion and/or other ingredients, the fibrous sheet material can, in some embodiments, then be dried using, for example, a tunnel dryer, to provide a sheet having a typical moisture content of less than 20% by weight, and particularly from about 9% to about 14% by weight. Subsequently, the sheet can be cut to a desired size and/or shape and dried to the desired final moisture content.
  • In accordance with the present invention, a carbon monoxide reducing agent may be incorporated into the reconstituted tobacco web. The web may then be used as an inner wrapper 230 as shown in FIG. 4. The amount of the carbon monoxide reducing agent added to the reconstituted tobacco web 230 may depend on various factors. In general, the carbon monoxide reducing agent may be added to the reconstituted tobacco web in an amount from about 3% to about 40% by weight, such as from about 15% to about 35% by weight. Greater or lesser amounts, however, may be desired in certain applications. In fact, in one embodiment, greater that 50% by weight of the carbon monoxide reducing agent may be incorporated into the reconstituted tobacco web 230.
  • When incorporated into reconstituted tobacco as described above, the reconstituted tobacco may form an inner wrapper 230 as shown in FIG. 4. Alternatively, the reconstituted tobacco may be shredded and formed into the smokable filler 212.
  • Still another embodiment of a smoking article generally 310 made in accordance with the present invention as shown in FIG. 5. The smoking article 310 includes a column of smokable filler 312, a wrapper 314, and a filter 316. In this embodiment, the wrapper 314 includes low permeability areas 340 that form bands on the wrapper 314. The lower permeability areas 340 produce a smoking article having improved ignition proclivity control characteristics. “Ignition proclivity” is a measure of the tendency of the smoking article or cigarette to ignite a flammable substrate if the burning cigarette is dropped or otherwise left on a flammable substrate. A test for ignition proclivity of a cigarette has been established by NIST (National Institute of Standards and Technology) and is generally referred to as the “Mock-Up Ignition Test”. The test comprises placing a smoldering cigarette on a flammable test fabric and recording the tendency of the cigarette to either ignite the test fabric, burn the test fabric beyond a normal char line of the fabric, burn its entire length without igniting the fabric, or self-extinguish before igniting the test fabric or burning its entire length.
  • Another test for ignition proclivity is referred to as the “Cigarette Extension Test”. In the Cigarette Extension Test, a lit cigarette is placed on one or more layers of a filter paper. If the cigarette self-extinguishes, the cigarette passes the test. If the cigarette burns all the way to its end on the filter, however, the cigarette fails. Smoking articles made in accordance with this embodiment of the present invention can be designed to pass one or both of these tests.
  • In order to produce a smoking article having reduced emission proclivity characteristics, as shown in FIG. 5, the wrapper 314 includes the lower permeability areas 340. The lower permeability areas 340 form bands on the wrapper 314. In the embodiment shown in FIG. 5, the bands are perpendicular to the axis of the cigarette 310. In other embodiments, however, it should be appreciated that the bands may be parallel to the axis of the smoking article or may be placed on the wrapper 314 in a spiral arrangement. In still further embodiments, the lower permeability areas 340 may appear on the wrapper 314 in any type of suitable pattern that includes the lower permeability areas 340 separated by or placed in conjunction with relatively higher permeability areas 342.
  • In the embodiments shown in FIG. 5, the lower permeability areas 340 form bands that are spaced apart from each other longitudinally along the length of the wrapper 314. For most applications, the lower permeability areas 340 are essentially invisible in the formed cigarette. In other words, a smoker may not discern from any outward sign that the wrapper 314 includes the lower permeability areas 340.
  • When appearing as bands as shown in FIG. 5, the width and spacing of the bands are dependent upon a number of variables, such as the initial permeability of the wrapper 314, density of the tobacco column 312, etc. The bands have a width so that oxygen is limited to the burning coal for a sufficient length of a period of time to extinguish the coal. In other words, if the bands were too narrow, the burning coal would burn through the bands before self-extinguishing when placed on an adjacent surface. For some applications, for instance, the bands may have a width of at least 3 millimeters, such as from about 5 millimeters to about 10 millimeters.
  • The spacing between the bands is also a factor of a number of variables. The spacing should not be so great that a cigarette burns for a sufficient length of time to ignite a substrate before the coal ever burns into a lower permeability area. The spacing between the bands also affects the thermal inertia of the burning coal, or the ability of the coal to burn through the bands without self-extinguishing. In general, band spacings of between about 1 millimeter to about 30 millimeter are appropriate and particularly, between about 10 millimeters to about 25 millimeters.
  • The lower permeability areas 340 have a permeability within a range that is known to provide improved ignition proclivity characteristics for the cigarette 310. For instance, the lower permeability areas may have a permeability of less than about 20 Coresta units, such as less than about 12 Coresta units. For instance, the lower permeability areas 340 may have a permeability within a range of from about 2 Coresta units to about 8 Coresta units.
  • Besides permeability, another measurement that can be used to indicate reduced ignition proclivity properties is Burn Mode Index. In fact, the Burn Mode Index of a wrapper can be more accurate in indicating the burning characteristics of a wrapper as opposed to simply measuring the permeability of the wrapper. The test for determining Burn Mode Index is explained in U.S. Pat. No. 4,739,775 to Hampl, which is incorporated herein by reference.
  • In order to exhibit reduced ignition proclivity properties, the Burn Mode Index of the lower permeability areas 340 can be generally less than about 8 cm−1, and particularly, from about 1 cm−1 to about 5 cm−1. For instance, in one embodiment, the Burn Mode Index of the lower permeability areas can be from about 1 cm−1 to about 3 cm−1.
  • The lower permeability areas 340 may be formed on the wrapper 314 in various ways. For example, in one embodiment, the lower permeability areas 340 may be formed in integral with the wrapper 314 by, for instance, densifying the wrapper or providing the wrapper with thickened areas.
  • In another embodiment, the lower permeability areas 340 may be formed from a cellulosic material. For example, in one embodiment, a separate paper web may be laminated to the wrapper 314. In another embodiment, a cellulosic composition may be deposited directly onto the wrapper 314.
  • In still another embodiment, the lower permeability areas 340 may be formed by applying a film-forming composition to the wrapper 314. For example, film-forming materials that can be used include alginates, guar, pectin, polyvinyl alcohol, cellulosic derivatives such as ethyl cellulose, methyl cellulose, and carboxymethyl cellulose, starch, starch derivatives, mixtures thereof, and the like. Alginates can include, for instance, potassium alginate, sodium alginate, propylene glycol alginate, and/or mixtures thereof.
  • The film-forming composition can be printed or sprayed onto the wrapper 314 using any suitable process.
  • Although the lower permeability areas 340 produce a smoking article having reduced ignition proclivity characteristics. In some embodiments, the lower permeability areas 340 may increase the amount of carbon monoxide that is produced by the smoking article. Thus, the teachings of the present invention are particularly well suited for the use in conjunction with the type of smoking articles illustrated in FIG. 5 and described above. In particular, a carbon monoxide reducing agent may be incorporated into the wrapper 314 into the smokable filler 312 or into both components in order to reduce carbon monoxide emissions even in the presence of the lower permeability areas 340.
  • For instance, a carbon monoxide reducing agent may be added to the smoking article in an amount sufficient to reduce carbon monoxide emissions by at least 10%. For instance, the smoking article may have a carbon monoxide delivery of less than about 15 mg per smoking article and may have a carbon monoxide to tar ratio of less than 1.0. Further, the average carbon monoxide delivery per puff can be less than about 1.75 mg.
  • The combination of the carbon monoxide reducing agent in conjunction with a smoking article having reduced ignition proclivity characteristics is believed to produce an overall smoking article having unique properties not before realized.
  • The present invention may be better understood with reference to the following examples.
  • EXAMPLES Example 1
  • The following tests were conducted in order to demonstrate the teachings of the present invention and to show reductions in carbon monoxide delivery in smoking articles.
  • Hand sheets were made containing cellulosic fibers in combination with either a conventional filler or a carbon monoxide reducing agent in accordance with the present invention. All of the carbon monoxide reducing agents used in this example were forms of iron oxide.
  • The control contained calcium carbonate sold under the trade name ALBACAR 5970. ALBACAR 5970 calcium carbonate has a median particle size of about 1.9 microns.
  • Each of the hand sheets had a basis weight of about 30 gsm and contained the filler or the carbon monoxide reducing agent in an amount of about 30%. The hand sheets had a permeability of 15 Coresta units.
  • Each of the trial papers was used to form cigarettes. The cigarettes were tested using a Model R04 Smoking Machine, manufactured by Borgwaldt Technik GmbH of Hamburg, Germany, which staged a 35 mL, 2 second puff of the cigarette through a pre-weighed Cambridge Filter pad once every minute. The process continued until the embers of the cigarette were 3 mm from the edge of the tipping paper for the filter. The number of puffs required to reach the designated distance from the tipping paper was deemed the puff count.
  • At the end of the testing, the Cambridge Filter pad, now containing a brown smoke stain, was removed from the smoking machine and reweighed. The difference in weight of the filter pad before and after testing is the amount of wet tar delivered in the mainstream smoke, designated in mg/cigarette. The filter pad was then subjected to a gas chromatograph analysis, which determined the percent water and the percent nicotine on the used filter pad. These values were converted to mass values and subtracted from the mass of wet tar to determine the mass of dry tar, also designated in mg/cigarette.
  • In the determination of the amount of mainstream carbon monoxide delivered by the cigarette, the mainstream smoke was collected and analyzed by a Model C21 Carbon Monoxide Analyzer, manufactured by Borgwaldt Technik GmbH of Hamburg, Germany. The percentage of carbon monoxide in the smoke was determined and then converted to units of mg/cigarette with respect to the total amount of mainstream smoke.
  • The following results were obtained:
    TABLE 1
    CO CO2 O2 Wet Tar Wet Tar Puff
    (%) (%) (%) (g/cig) (mg/cig) Count CO (mg) CO2 (mg)
    Control 5.12 10.09 11.63 0.0323 32.3 8.17 16.9 52.5
    Fe2O3.xH2O 2.19 7.01 14.94 0.0169 16.9 6.67 5.9 29.8
    Fe2O3 3.34 7.8 13.76 0.0201 20.1 8.33 11.3 41.3
    Blended 3.1 7.77 13.95 0.0218 21.8 7.67 9.6 37.9
    Oxides
    Fe3O4 4.72 9.31 12.07 0.0301 30.1 8 15.3 47.4
    O2/puff Wet
    O2 CO/Tar CO/Puff CO2/Puff (mg/ Tar/Puff
    (mg) (mg/mg) (mg/puff) (mg/puff) puff) CO2/CO (mg/puff)
    Control 44.0 0.52 2.07 6.42 5.38 3.10 3.95
    Fe2O3.xH2O 46.1 0.35 0.89 4.46 6.91 5.03 2.53
    Fe2O3 53.0 0.56 1.35 4.96 6.37 3.67 2.41
    Blended 49.5 0.44 1.26 4.94 6.45 3.94 2.84
    Oxides
    Fe3O4 44.7 0.51 1.91 5.92 5.58 3.10 3.76
  • Example 2
  • In this example, further hand sheets were made all having a total filler loading of about 30% by weight. The hand sheets had a permeability of about 20 Coresta units and had a basis weight of about 30 gsm. As in Example 1, the control contained ALBACAR 5970 calcium carbonate in an amount of 30% by weight.
  • Three other hand sheets were constructed in accordance with the present invention. In particular, in two of the hand sheets, a portion of the calcium carbonate filler was replaced by hydrated iron oxide. In the third trial paper, the calcium carbonate was completely replaced by hydrated iron oxide.
  • The tests described in Example 1 were repeated and the following results were obtained:
    TABLE 2
    CO CO2 O2 Wet Tar Wet Tar Puff
    (%) (%) (%) (g/cig) (mg/cig) Count
    Control 4.09 9.1 12.53 0.0125 12.5 7.9
    10% 2.87 8.6 13.25 0.0126 12.6 8.05
    hydrated
    Fe203
    20% 2.07 7.26 14.3 0.0113 11.3 8.3
    hydrated
    Fe203
    30% 1.84 7.06 14.5 0.0089 8.9 6.53
    hydrated
    Fe203
    Wet
    CO CO2 O2 CO/Tar CO/Puff Tar/Puff
    (mg) (mg) (mg) (mg/mg) (mg/puff) (mg/puff)
    Control 13.1 45.7 45.8 1.05 1.66 1.58
    10% 9.4 44.1 49.4 0.74 1.16 1.57
    hydrated
    Fe203
    20% 7.0 38.3 54.9 0.62 0.84 1.36
    hydrated
    Fe203
    30% 4.9 29.3 43.8 0.55 0.75 1.36
    hydrated
    Fe203
  • Example 3
  • In this example, further hand sheets were constructed containing various carbon monoxide reducing agents in accordance with the present invention. The hand sheets were compared to a control. All of the hand sheets had a 30% total filler loading, had a permeability of about 25 Coresta units, and had a basis weight of about 30 gsm. The control contained ALBACAR 5970 calcium carbonate.
  • The hand sheets were formed into cigarettes and the tests described in Example 1 were repeated. The following results were obtained:
    TABLE 3
    CO Wet Tar
    Sample BMI Coresta (%) (g/cig)
    Control 9.68 13.9 4.7 0.0306
    Cr203 11.76 14.9 4.1 0.03317
    PdO 7.17 14.8 3.2 0.0225
    CuO 5.93 13.5 3.85 0.0332
    PtO 5.99 14.1 4 0.0279
    hydrated 13.06 10.30 2.80 0.02
    Fe203
    yellow10
    Ca02 8.00 10.60 3.50 0.03
    Co304 8.31 9.8 2.2 0.0172
    CoO 7.70 10 4 0.0274
    CoCO3 14.64 14.4 2.45 0.0185
    CO/Puff Wet
    Wet Tar Puff CO CO/Tar (mg/ Tar/Puff
    Sample (mg/cig) Count (mg) (mg/mg) puff) (mg/puff
    Control 30.6 8.2 15.61 0.51 1.90 3.73
    Cr203 33.17 8 13.28 0.40 1.66 4.15
    PdO 22.5 6.5 8.42 0.37 1.30 3.46
    CuO 33.2 9.3 14.50 0.44 1.56 3.57
    PtO 27.9 7.2 11.66 0.42 1.62 3.88
    Fe203 18.90 7.50 8.50 0.45 1.13 2.52
    yellow10
    Ca02 27.40 9.20 13.04 0.48 1.42 2.98
    Co304 17.2 8.8 7.84 0.46 0.89 1.95
    CoO 27.4 8.7 14.09 0.51 1.62 3.15
    CoCO3 18.5 8.05 8.0 0.43 0.99 2.30
  • Example 4
  • Example 2 above was repeated. In this example, however, all of the wrapping papers were made on commercial paper making machines as opposed to being hand sheets made in a laboratory.
  • The basis weight of all of the wrapping papers was about 26 gsm. The permeability of the papers was about 24 Coresta units. Otherwise, all of the procedures described in Example 2 were repeated. The following results were obtained:
    TABLE 4
    CO CO2 O2 Wet Tar Wet Tar Puff
    (%) (%) (%) (g/cig) (mg/cig) Count
    Control 4.09 9.10 12.53 0.0125 12.5 7.9
    10% 2.87 8.60 13.25 0.0126 12.6 8.1
    hydrated
    Fe203
    20% 2.07 7.26 14.30 0.0113 11.3 8.3
    hydrated
    Fe203
    30% 1.84 7.06 14.50 0.0089 8.9 6.5
    hydrated
    Fe203
    Wet
    CO CO2 O2 CO/Tar CO/Puff Tar/Puff
    (mg) (mg) (mg) (mg/mg) (mg/puff) (mg/puff)
    Control 13.1 45.7 45.8 1.05 1.66 1.58
    10% 9.4 44.1 49.4 0.74 1.16 1.57
    hydrated
    Fe203
    20% 7.0 38.3 54.9 0.62 0.84 1.36
    hydrated
    Fe203
    30% 4.9 29.3 43.8 0.55 0.75 1.36
    hydrated
    Fe203
  • Although various embodiments of the invention have been described using specific terms, devices, and methods, such description is for illustrative purposes only. The words used are words of description rather than of limitation. It is to be understood that changes and variations may be made by those of ordinary skill in the art without departing from the spirit or scope of the present invention. In addition, it should be understood that aspects of the various embodiments may be interchanged both in whole or in part. Therefore, the spirit and scope of the invention should not be limited to the description of the preferred versions contained therein.

Claims (71)

1. A smoking article comprising:
a first component comprising a column of a smokable filler;
a second component comprising a wrapper surrounding the column of the smokable filler; and
a carbon monoxide reducing agent selected from the group consisting of metal oxides and metal carbonates, the carbon monoxide reducing agent being contained in the first component, the second component, or in both components, the carbon monoxide reducing agent being present in an amount sufficient to reduce carbon monoxide delivery in mg per smoking article by at least 10%.
2. A smoking article as defined in claim 1, wherein the carbon monoxide reducing agent comprises iron oxide.
3. A smoking article as defined in claim 1, wherein the carbon monoxide reducing agent comprises cobalt oxide, calcium peroxide, palladium oxide, platinum oxide, cobalt carbonate or mixtures thereof.
4. A smoking article as defined in claim 1, wherein the carbon monoxide reducing agent has a median particle size of from about 0.05 microns to about 3 microns.
5. A smoking article as defined in claim 1, wherein the carbon monoxide reducing agent is present in the first component or the second component in an amount up to about 40% by weight.
6. A smoking article as defined in claim 1, wherein the carbon monoxide reducing agent is also present in an amount sufficient to reduce the carbon monoxide to tar ratio of the smoking article by at least about 10%.
7. A smoking article as defined in claim 1, wherein the smokable filler comprises a tobacco.
8. A smoking article as defined in claim 1, wherein the column of smokable filler comprises reconstituted tobacco.
9. A smoking article as defined in claim 1, wherein the wrapper surrounding the column of the smokable filler comprises a sheet of reconstituted tobacco.
10. A smoking article as defined in claim 1, wherein the carbon monoxide reducing agent comprises ferric oxide.
11. A smoking article as defined in claim 1, wherein the carbon monoxide reducing agent comprises hydrated ferric oxide.
12. A smoking article as defined in claim 1, wherein the wrapper comprises an outer layer and an inner layer, the carbon monoxide reducing agent being contained in the inner layer.
13. A smoking article as defined in claim 1, wherein the carbon monoxide reducing agent is only contained in the first component.
14. A smoking article as defined in claim 1, wherein the carbon monoxide reducing agent is only contained in the second component.
15. A smoking article as defined in claim 1, wherein the carbon monoxide reducing agent comprises a Group VIII oxide.
16. A smoking article as defined in claim 1, wherein the smoking article has a carbon monoxide delivery of less than about 15 mg per smoking article.
17. A smoking article as defined in claim 1, wherein the smoking article has a carbon monoxide delivery of less than about 12 mg per smoking article.
18. A smoking article as defined in claim 1, wherein the smoking article has a carbon monoxide delivery of less than about 10 mg per smoking article.
19. A smoking article as defined in claim 1, wherein the smoking article has a carbon monoxide to tar ratio of less than about 1.0.
20. A smoking article as defined in claim 1, wherein the smoking article has a carbon monoxide to tar ratio of less than about 0.7.
21. A smoking article as defined in claim 1, wherein the smoking article has a carbon monoxide to tar ratio of less than about 0.5.
22. A smoking article as defined in claim 1, wherein the smoking article further comprises low permeability areas surrounding the column of the smokable filler, the low permeability areas having a permeability within a range sufficient to reduce ignition proclivity.
23. A smoking article as defined in claim 1, wherein the smoking article has an average carbon monoxide delivery per puff of less than about 1.7 mg.
24. A smoking article as defined in claim 1, wherein the smoking article has an average carbon monoxide delivery per puff of less than about 1.5 mg.
25. A smoking article as defined in claim 1, wherein the smoking article has an average carbon monoxide delivery per puff of less than about 1.25 mg.
26. A smoking article as defined in claim 1, wherein the smoking article has an average carbon monoxide delivery per puff of less than about 1.0 mg.
27. A smoking article comprising:
a first component comprising a column of a smokable filler, the smokable filler comprising a tobacco;
a second component comprising a wrapper surrounding the column of the smokable filler; and
a carbon monoxide reducing agent contained in the first component, the second component, or in both components, the carbon monoxide reducing agent comprising an iron oxide, a cobalt oxide, a calcium peroxide, a palladium oxide, a platinum oxide, a cobalt carbonate, or mixtures thereof, the carbon monoxide reducing agent being present in the first component or in the second component in an amount from about 3% by weight to about 40% by weight, the smoking article having a carbon monoxide delivery of less than about 15 mg per smoking article and having a carbon monoxide to tar ratio of less than about 1.0.
28. A smoking article as defined in claim 27, wherein the carbon monoxide reducing agent comprises a Group VIII oxide.
29. A smoking article as defined in claim 27, wherein the carbon monoxide reducing agent comprises a ferric oxide.
30. A smoking article as defined in claim 29, wherein the carbon monoxide reducing agent comprises a hydrated ferric oxide.
30. A smoking article as defined in claim 27, wherein the carbon monoxide reducing agent is present in the first component or present in the second component in an amount of at least about 10% by weight.
31. A smoking article as defined in claim 27, wherein the smoking article has a carbon monoxide delivery of less than about 12 mg per smoking article.
32. A smoking article as defined in claim 27, wherein the smoking article has a carbon monoxide delivery of less than about 10 mg per smoking article.
33. A smoking article as defined in claim 27, wherein the smoking article has a carbon monoxide to tar ratio of less than about 0.7.
34. A smoking article as defined in claim 27, wherein the smoking article has a carbon monoxide to tar ratio of less than about 0.5.
35. A smoking article as defined in claim 27, wherein the smoking article further comprises low permeability areas surrounding the column of the smokable filler, the low permeability areas having a permeability within a range sufficient to reduce ignition proclivity.
36. A smoking article as defined in claim 27, wherein the wrapper comprises at least an outer layer and an inner layer, the carbon monoxide reducing agent being contained in the inner layer.
37. A smoking article as defined in claim 27, wherein the carbon monoxide reducing agent is only contained in the first component.
38. A smoking article as defined in claim 27, wherein the carbon monoxide reducing agent is only contained in the second component.
39. A smoking article as defined in claim 27, wherein the column of smokable filler comprises reconstituted tobacco.
40. A smoking article as defined in claim 27, wherein the wrapper surrounding the column of the smokable filler comprises a sheet of reconstituted tobacco.
41. A smoking article as defined in claim 27, wherein the carbon monoxide reducing agent is contained within the wrapper, the wrapper comprising pulp fibers, the wrapper having a permeability of from about 15 Coresta to about 110 Coresta, and a basis weight of from about 18 gsm to about 60 gsm.
42. A smoking article as defined in claim 41, wherein the wrapper further contains a filler.
43. A smoking article as defined in claim 42, wherein the filler comprises calcium carbonate.
44. A process for reducing carbon monoxide delivery in a smoking article comprising:
incorporating into the smoking article a carbon monoxide reducing agent, the carbon monoxide reducing agent comprising a Group VIII oxide, a calcium peroxide, a cobalt carbonate, or mixtures thereof, the carbon monoxide reducing agent being present in an amount sufficient to reduce carbon monoxide delivery in mg per smoking article by at least about 10%, the smoking article having a carbon monoxide delivery of less than about 15 mg per smoking article and having a carbon monoxide to tar ratio of less than about 1.0.
45. A process as defined in claim 44, wherein the smoking article comprises a column of smokable filler and a wrapper surrounding the column, the carbon monoxide reducing agent being contained in the wrapper.
46. A process as defined in claim 44, wherein the smoking article comprises a column of smokable filler and a wrapper surrounding the column, the carbon monoxide reducing agent being contained in the smokable filler.
47. A process as defined in claim 44, wherein the carbon monoxide reducing agent comprises a ferric oxide
48. A smoking article comprising:
a first component comprising a column of a smokable filler, the smokable filler comprising a tobacco;
a second component comprising a wrapper surrounding the column of the smokable filler;
low permeability areas contained within the wrapper at selected locations, the lower permeability areas creating a BMI range within the wrapper sufficient to reduce ignition proclivity by reducing oxygen to a smoldering coal of the smoking article as the coal burns and advances into the lower permeability areas, the wrapper having a BMI of less than about 8 cm−1 within the lower permeability areas; and
wherein the smoking article has a carbon monoxide delivery of less than about 15 mg per smoking article and has a carbon monoxide to tar ratio of less than about 1.0.
49. A smoking article as defined in claim 48, wherein the smoking article has an average carbon monoxide per puff of less than about 1.75 mg.
50. A smoking article as defined in claim 48, wherein the smoking article has an average carbon monoxide per puff of less than about 1.5 mg.
51. A smoking article as defined in claim 48, wherein the smoking article has an average carbon monoxide per puff of less than about 1.25 mg.
52. A smoking article as defined in claim 48, wherein the smoking article has a carbon monoxide delivery of less than about 12 mg per smoking article.
53. A smoking article as defined in claim 48, wherein the smoking article has a carbon monoxide delivery of less than about 10 mg per smoking article.
54. A smoking article as defined in claim 48, wherein the carbon monoxide to tar ratio is less than about 0.7.
55. A smoking article as defined in claim 48, wherein the carbon monoxide to tar ratio is less than about 0.5.
56. A smoking article as defined in claim 48, wherein the smoking article further comprises a carbon monoxide reducing agent contained within the first component, the second component, or in both components, the carbon monoxide reducing agent comprising a Group VIII oxide, a Group VIII carbonate, or mixtures thereof.
57. A smoking article as defined in claim 56, wherein the carbon monoxide reducing agent is only contained within the wrapper, the carbon monoxide reducing agent being present in the wrapper in an amount from about 0.3% to about 40% by weight.
58. A smoking article as defined in claim 57, wherein the wrapper comprises a paper layer containing pulp fibers, the paper layer having a permeability of from about 15 Coresta to about 110 Coresta and a basis weight from about 18 gsm to about 60 gsm.
59. A smoking article as defined in claim 57, wherein the wrapper comprises an outer layer and an inner layer, the carbon monoxide reducing agent being contained within the inner layer.
60. A smoking article as defined in claim 59, wherein the inner layer comprises reconstituted tobacco.
61. A smoking article as defined in claim 56, wherein the carbon monoxide reducing agent is only contained in the first component.
62. A smoking article as defined in claim 61, wherein the smokable filler comprises reconstituted tobacco.
63. A smoking article as defined in claim 56, wherein the lower permeability areas comprise bands located on the wrapper.
64. A smoking article as defined in claim 63, wherein the bands are substantially parallel to an axis of the smoking article.
65. A smoking article as defined in claim 63, wherein the bands are substantially perpendicular to an axis of the smoking article.
66. A smoking article as defined in claim 48, wherein the wrapper has a BMI from about 1 cm−1 to about 5 cm−1 within the lower permeability areas.
67. A smoking article as defined in claim 48, wherein the lower permeability areas are formed by coating the wrapper with a film-forming composition.
68. A smoking article as defined in claim 48, wherein the lower permeability areas comprise a cellulosic composition that has been applied to the wrapper.
69. A smoking article as defined in claim 48, wherein the lower permeability areas comprise pieces of a fibrous web that have been placed in association with the wrapper.
70. A smoking article as defined in claim 56, wherein the carbon monoxide reducing agent comprises a ferric oxide.
US10/618,096 2003-07-11 2003-07-11 Smoking articles having reduced carbon monoxide delivery Abandoned US20050005947A1 (en)

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BRPI0412513-4B1A BRPI0412513B1 (en) 2003-07-11 2004-04-30 smoking articles having reduced carbon monoxide supply.
PCT/US2004/013656 WO2005013733A2 (en) 2003-07-11 2004-04-30 Smoking articles having reduced carbon monoxide delivery
CN2004800174525A CN1809289B (en) 2003-07-11 2004-04-30 Smoking articles having reduced carbon monoxide delivery
EP04751179A EP1643868A2 (en) 2003-07-11 2004-04-30 Smoking articles having reduced carbon monoxide delivery
JP2006520153A JP4681547B2 (en) 2003-07-11 2004-04-30 Smokers with reduced carbon monoxide delivery
US12/509,197 US8353301B2 (en) 2003-07-11 2009-07-24 Smoking articles having reduced carbon monoxide delivery
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Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050039767A1 (en) * 2002-11-19 2005-02-24 John-Paul Mua Reconstituted tobacco sheet and smoking article therefrom
US20050056294A1 (en) * 2002-11-19 2005-03-17 Wanna Joseph T. Modified reconstituted tobacco sheet
US20060037621A1 (en) * 2000-11-10 2006-02-23 Bereman Robert D Method of making a smoking composition
WO2006086023A1 (en) * 2005-02-07 2006-08-17 Schweitzer-Mauduit International, Inc. Smoking articles having reduced analyte levels and process for making same
US20070102017A1 (en) * 2005-08-15 2007-05-10 Philip Morris Usa Inc., Richmond, Va Usa. Gravure-printed, branded cigarette paper
US20070157940A1 (en) * 2006-01-06 2007-07-12 R. J. Reynolds Tobacco Company Smoking articles comprising inner wrapping strips
US20070215167A1 (en) * 2006-03-16 2007-09-20 Evon Llewellyn Crooks Smoking article
US20070215168A1 (en) * 2006-03-16 2007-09-20 Banerjee Chandra K Smoking article
US20070295348A1 (en) * 2006-06-01 2007-12-27 Schweitzer-Mauduit International, Inc. Free air burning smoking articles with reduced ignition proclivity characteristics
US20080173320A1 (en) * 2007-01-19 2008-07-24 R. J. Reynolds Tobacco Company Filtered Smoking Articles
US20080216852A1 (en) * 2006-12-29 2008-09-11 Philip Morris Usa Inc. Banded cigarette paper with reduced ignition propensity
WO2008108889A1 (en) 2006-10-18 2008-09-12 R.J.Reynolds Tobacco Company Tobacco-containing smoking article
US20080295854A1 (en) * 2006-03-31 2008-12-04 Philip Morris Usa Inc. Banded papers, smoking articles and methods
US20090283104A1 (en) * 2003-07-11 2009-11-19 Hampl Jr Vladimir Smoking Articles Having Reduced Carbon Monoxide Delivery
US20100180903A1 (en) * 2007-03-27 2010-07-22 Wendy Cooper Smoking Article with Thermoresilient Design and Methods of Producing the Same
US20110023901A1 (en) * 2009-07-30 2011-02-03 Philip Morris Usa Inc. Banded paper, smoking article and method
WO2011131464A1 (en) * 2010-04-22 2011-10-27 British American Tobacco (Investments) Limited Low ignition propensity smoking article and an apparatus and method for forming a low ignition propensity smoking article
WO2012168516A1 (en) * 2011-06-09 2012-12-13 Miquel Y Costas & Miquel, S.A. Composition for coating a paper wrapper for smoking requisites
GB2492086A (en) * 2011-06-20 2012-12-26 British American Tobacco Co Smoking article with additional tobacco patch
WO2013170028A1 (en) * 2012-05-09 2013-11-14 Lanig Le Bec Tobacco product that produces lower carbon monoxide to tar ratio
US20140332996A1 (en) * 2013-05-07 2014-11-13 Neuvokas Corporation Method of manufacturing a composite material
US9149068B2 (en) 2012-10-11 2015-10-06 Schweitzer-Mauduit International, Inc. Wrapper having reduced ignition proclivity characteristics
US9302522B2 (en) 2010-12-13 2016-04-05 Altria Client Services Llc Process of preparing printing solution and making patterned cigarette wrappers
US9668516B2 (en) 2012-05-16 2017-06-06 Altria Client Services Llc Banded cigarette wrapper with opened-area bands
US10188140B2 (en) 2005-08-01 2019-01-29 R.J. Reynolds Tobacco Company Smoking article
US10375988B2 (en) 2010-12-13 2019-08-13 Altria Client Services Llc Cigarette wrapper with novel pattern
US10682818B2 (en) 2015-07-02 2020-06-16 Neuvokas Corporation Method of manufacturing a composite material
WO2021009730A1 (en) 2019-07-18 2021-01-21 R. J. Reynolds Tobacco Company Thermal energy absorbers for tobacco heating products
US10905154B2 (en) 2011-05-16 2021-02-02 Altria Client Services Llc Alternating patterns in cigarette wrapper, smoking article and method
US11064729B2 (en) 2012-05-16 2021-07-20 Altria Client Services Llc Cigarette wrapper with novel pattern
US20230002973A1 (en) * 2020-11-12 2023-01-05 Sun Chemical Corporation Titanium dioxide-free cigarette tipping inks
US11659868B2 (en) 2014-02-28 2023-05-30 Rai Strategic Holdings, Inc. Control body for an electronic smoking article
US11707082B2 (en) 2010-12-13 2023-07-25 Altria Client Services Llc Process of preparing printing solution and making patterned cigarette wrapper
US11779051B2 (en) 2011-08-09 2023-10-10 Rai Strategic Holdings, Inc. Smoking articles and use thereof for yielding inhalation materials
US11919254B2 (en) 2019-11-12 2024-03-05 Neuvokas Corporation Method of manufacturing a composite material

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5250694B2 (en) * 2009-04-03 2013-07-31 日本たばこ産業株式会社 Cigarette and cigarette material processing method
GB201100218D0 (en) * 2011-01-07 2011-02-23 British American Tobacco Co Smoking article
JO3752B1 (en) 2011-06-10 2021-01-31 Schweitzer Mauduit Int Inc Tobacco Material Containing Non-Isometric Calcium Carbonate Microparticles
CN103767058A (en) * 2012-10-25 2014-05-07 湖北中烟工业有限责任公司 Method for preparing reconstituted tobacco with low carbon monoxide release amount
WO2014161190A1 (en) * 2013-04-03 2014-10-09 Xiang Zhiyong Tester and method for testing smoke amount of electronic cigarette
EP3021696B1 (en) 2013-07-19 2018-05-23 Philip Morris Products S.a.s. Smoking article having a particle containing wrapper
CN106028845A (en) 2013-12-11 2016-10-12 施韦特-莫迪国际公司 Wrappers for smoking articles
WO2016077737A1 (en) 2014-11-13 2016-05-19 Milwaukee Electric Tool Corporation Level including removable end caps
US10845193B2 (en) 2016-12-21 2020-11-24 Milwaukee Electric Tool Corporation Level with removable end cap
CN110088570A (en) 2016-12-21 2019-08-02 米沃奇电动工具公司 Level meter with removable end cap
CN106490677A (en) * 2016-12-30 2017-03-15 广东中烟工业有限责任公司 A kind of preparation method and applications of temperature adjustment cigarette
KR102367431B1 (en) * 2018-02-01 2022-02-24 주식회사 케이티앤지 Wrapper for combining a plurality of segments constituting a smoking article
US11085762B2 (en) 2018-04-27 2021-08-10 Milwaukee Electric Tool Corporation Level with removable end cap with wall grip
KR102412119B1 (en) * 2019-12-18 2022-06-22 주식회사 케이티앤지 Aerosol generating article comprising a first wrapper and a second wrapper, and aerosol generating system using the same

Citations (96)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1996002A (en) * 1933-05-25 1935-03-26 Seaman Stewart Elmer Decreasing inflammability of cigarettes
US2003690A (en) * 1933-03-28 1935-06-04 Lucy O Lewton Tobacco product
US2013508A (en) * 1933-05-25 1935-09-03 Seaman Stewart Elmer Difficultly flammable cigarette wrapper
US3215579A (en) * 1963-01-23 1965-11-02 Formica Corp Process for releasing laminates
US3353541A (en) * 1966-06-16 1967-11-21 Philip Morris Inc Tobacco sheet material
US3386449A (en) * 1966-06-16 1968-06-04 Philip Morris Inc Method of making a reconstituted tobacco sheet
US3415253A (en) * 1967-01-13 1968-12-10 Philip Morris Inc Process for manufacturing reconstituted tobacco sheet material in a substantially closed system
US3420241A (en) * 1967-04-28 1969-01-07 Philip Morris Inc Method of preparing a reconstituted tobacco sheet employing a pectin adhesive
US3428053A (en) * 1965-10-07 1969-02-18 American Tobacco Co Production of reconstituted tobacco
US3467109A (en) * 1967-06-12 1969-09-16 Lorillard Co Inc P Method and apparatus for making reconstituted tobacco
US3472237A (en) * 1967-05-24 1969-10-14 Steber Corp Irradiated tobacco process and product
US3483874A (en) * 1967-11-29 1969-12-16 Philip Morris Inc Process for the treatment of tobacco
US3511247A (en) * 1968-05-10 1970-05-12 Philip Morris Inc Smoking product and method of making the same
US3526904A (en) * 1968-05-10 1970-09-01 Philip Morris Inc Film covered,apertured cigarette wrapper
US3561451A (en) * 1967-05-17 1971-02-09 American Mach & Foundry Process of manufacturing reconstituted tobacco of light color
US3620801A (en) * 1968-06-07 1971-11-16 Wiggins Teape Res Dev Sized transfer sheet
US3621851A (en) * 1969-11-26 1971-11-23 Kata Mfg & Filtering Co Filter for smoker's article
US3699973A (en) * 1971-07-06 1972-10-24 Philip Morris Inc Film covering for apertured smoking product wrapper
US3736940A (en) * 1967-07-18 1973-06-05 Pastou J Saint Cigarette with ash-retaining means
US3760815A (en) * 1971-01-06 1973-09-25 Philip Morris Inc Preparation of reconstituted tobacco
US3847164A (en) * 1973-10-11 1974-11-12 Kimberly Clark Co Method of making reconstituted tobacco having reduced nitrates
US3860012A (en) * 1973-05-21 1975-01-14 Kimberly Clark Co Method of producing a reconstituted tobacco product
US3911932A (en) * 1974-07-31 1975-10-14 Philip Morris Inc Control of smoking delivery through cigarette paper porosity
US4077414A (en) * 1975-01-09 1978-03-07 Brown & Williamson Tobacco Corporation Smoking articles
US4129134A (en) * 1975-04-14 1978-12-12 Philip Morris Incorporated Smoking article
US4146040A (en) * 1977-03-17 1979-03-27 Cohn Charles C Cigarettes
US4182349A (en) * 1977-11-04 1980-01-08 Kimberly-Clark Corporation Method of making reconstituted tobacco
US4193412A (en) * 1976-12-23 1980-03-18 Rhodia Ag Additive for smoking tobacco products, filter elements thereof and process for the preparation thereof
US4222740A (en) * 1979-03-05 1980-09-16 Armstrong Cork Company Coloration method for textiles
US4267240A (en) * 1979-11-13 1981-05-12 Formica Corporation Release sheets and process of use
US4303084A (en) * 1980-07-14 1981-12-01 Eli Simon Self-extinguishing cigarettes
US4351638A (en) * 1981-09-21 1982-09-28 Burlington Industries, Inc. Process of reactively dyeing and printing toweling
US4452259A (en) * 1981-07-10 1984-06-05 Loews Theatres, Inc. Smoking articles having a reduced free burn time
US4453553A (en) * 1983-01-24 1984-06-12 Cohn Charles C Treatment of cigarette paper
US4481960A (en) * 1981-08-05 1984-11-13 British-American Tobacco Company Limited Cigarettes
US4590955A (en) * 1984-07-11 1986-05-27 Olin Corporation Cigarette paper with reduced CO on burning
US4607647A (en) * 1983-06-15 1986-08-26 British-American Tobacco Company Limited Smoking articles
US4615345A (en) * 1983-08-08 1986-10-07 Kimberly-Clark Corporation Wrapper constructions for self-extinguishing smoking articles
US4622983A (en) * 1983-08-08 1986-11-18 Kimberly-Clark Corporation Reduced ignition proclivity smoking article wrapper and smoking article
US4674519A (en) * 1984-05-25 1987-06-23 Philip Morris Incorporated Cohesive tobacco composition
US4679575A (en) * 1984-11-23 1987-07-14 Japan Tobacco Inc. Cigarette
US4739775A (en) * 1986-09-26 1988-04-26 Kimberly-Clark Corporation Wrapper constructions for self-extinguishing and reduced ignition proclivity smoking articles
US4805644A (en) * 1986-06-30 1989-02-21 Kimberly-Clark Corporation Sidestream reducing cigarette paper
US4880870A (en) * 1982-09-23 1989-11-14 Hoechst Aktiengesellschaft Polymer granulate, a process for its preparation, and its use
US4943762A (en) * 1988-01-27 1990-07-24 Codar Technology, Inc. Power supply system
US4984589A (en) * 1988-11-30 1991-01-15 Julius Glatz Gmbh Wrapper for smoking article
US4998542A (en) * 1989-02-23 1991-03-12 Philip Morris Incorporated Wrapper for smoking articles and method for preparing same
US5040551A (en) * 1988-11-01 1991-08-20 Catalytica, Inc. Optimizing the oxidation of carbon monoxide
US5057606A (en) * 1989-01-24 1991-10-15 Minnesota Mining And Manufacturing Company Form-in-place polysaccharide gels
US5092353A (en) * 1989-01-18 1992-03-03 R. J. Reynolds Tobacco Company Cigarette
US5131416A (en) * 1990-12-17 1992-07-21 R. J. Reynolds Tobacco Company Cigarette
US5143099A (en) * 1989-08-14 1992-09-01 Papeteries De Mauduit Double wrapped cigarettes with reduced spotting and method of manufacture
US5144966A (en) * 1990-12-11 1992-09-08 Philip Morris Incorporated Filamentary flavorant-release additive for smoking compositions
US5161549A (en) * 1990-03-20 1992-11-10 Regional Research & Development Corporation Pure clean cigarette filter
US5178167A (en) * 1991-06-28 1993-01-12 R. J. Reynolds Tobacco Company Carbonaceous composition for fuel elements of smoking articles and method of modifying the burning characteristics thereof
US5220930A (en) * 1992-02-26 1993-06-22 R. J. Reynolds Tobacco Company Cigarette with wrapper having additive package
US5221502A (en) * 1990-12-11 1993-06-22 Philip Morris Incorporated Process for making a flavorant-release filament
US5261425A (en) * 1990-05-24 1993-11-16 R. J. Reynolds Tobacco Company Cigarette
US5263999A (en) * 1991-09-10 1993-11-23 Philip Morris Incorporated Smoking article wrapper for controlling burn rate and method for making same
US5540242A (en) * 1993-07-07 1996-07-30 Brown & Williamson Tobacco Corporation Cigarette paper having reduced sidestream properties
US5621425A (en) * 1992-12-24 1997-04-15 Seiko Instruments Inc. Liquid crystal display device
US5690787A (en) * 1993-12-16 1997-11-25 Kimberly-Clark Worldwide, Inc. Polymer reinforced paper having improved cross-direction tear
US5715844A (en) * 1994-09-01 1998-02-10 R. J. Reynolds Tobacco Company Tobacco reconstitution process
US5722433A (en) * 1995-08-09 1998-03-03 Mishima Paper Co., Ltd. Water-dispersible sheet for cigarettes and cigarette using the same
US5724998A (en) * 1992-04-09 1998-03-10 Philip Morris Incorporated Reconstituted tobacco sheets and methods for producing and using the same
US5765570A (en) * 1993-04-30 1998-06-16 Brown & Williamson Tobacco Corporation Reconstituted tobacco product
US5820998A (en) * 1994-03-08 1998-10-13 Schweitzer-Mauduit International, Inc. Coated paper and process for making the same
US5878753A (en) * 1997-03-11 1999-03-09 Schweitzer-Mauduit International, Inc. Smoking article wrapper for controlling ignition proclivity of a smoking article without affecting smoking characteristics
US5878754A (en) * 1997-03-10 1999-03-09 Schweitzer-Mauduit International, Inc. Smoking article wrapper for controlling ignition proclivity of a smoking article
US5893372A (en) * 1997-04-07 1999-04-13 Schweitzer Maudit International, Inc. High opacity wrapping paper
US6129087A (en) * 1998-03-25 2000-10-10 Brown & Williamson Tobacco Corporation Reduced ignition propensity smoking articles
US6286516B1 (en) * 1998-04-16 2001-09-11 Rothmans, Benson & Hedges Inc. Cigarette sidestream smoke treatment material
US6289898B1 (en) * 1999-07-28 2001-09-18 Philip Morris Incorporated Smoking article wrapper with improved filler
US6305382B1 (en) * 1997-04-07 2001-10-23 Schweitzer-Mauduit International, Inc. Reduced basis weight cigarette paper
US6314964B1 (en) * 1999-09-15 2001-11-13 Schweitzer-Mauduit International, Inc. Cigarette paper containing carbon fibers for improved ash characteristics
US20020000235A1 (en) * 2000-05-11 2002-01-03 Kenneth Shafer Cigarette with smoke constituent attenuator
US6371127B1 (en) * 1996-10-15 2002-04-16 Rothmans, Benson & Hedges Inc. Cigarette sidestream smoke and free-burn rate control device
US6568403B2 (en) * 2000-06-22 2003-05-27 Schweitzer-Mauduit International, Inc. Paper wrapper for reduction of cigarette burn rate
US20030131860A1 (en) * 2001-08-14 2003-07-17 Ashcraft Charles Ray Wrapping materials for smoking articles
US6606999B2 (en) * 2001-03-27 2003-08-19 R. J. Reynolds Tobacco Company Reduced ignition propensity smoking article
US6615842B1 (en) * 1998-02-13 2003-09-09 Cerami Consulting Corp. Methods for removing nucleophilic toxins from tobacco smoke
US6637439B2 (en) * 2001-08-31 2003-10-28 Philip Morris Incorporated Tobacco smoking mixture for smoking articles such as cigarettes
US6645605B2 (en) * 2001-01-15 2003-11-11 James Rodney Hammersmith Materials and method of making same for low ignition propensity products
US6679270B2 (en) * 2000-10-05 2004-01-20 Nicolas Baskevitch Reduction of nitrosamines in tobacco and tobacco products
US20040011368A1 (en) * 2001-01-15 2004-01-22 Takeo Tsutsumi Cigarette
US20040020504A1 (en) * 2002-03-15 2004-02-05 Rothmans, Benson & Hedges Inc. Low sidestream smoke cigarette with combustible paper having a modified ash
US20040020502A1 (en) * 2001-08-13 2004-02-05 Agustin Tosas Fuentes Method of preparing paper for self-extinguishing cigarettes
US6725867B2 (en) * 2000-11-13 2004-04-27 Schweitzer-Mauduit International, Inc. Process for producing smoking articles with reduced ignition proclivity characteristics and products made according to same
US20040084171A1 (en) * 2001-05-18 2004-05-06 Thixomat, Inc. Apparatus for molding metals
US20040123874A1 (en) * 2001-03-28 2004-07-01 Zawadzki Michael A. Reduced ignition propensity smoking article with a polysaccharide treated wrapper
US6779530B2 (en) * 2002-01-23 2004-08-24 Schweitzer-Mauduit International, Inc. Smoking articles with reduced ignition proclivity characteristics
US20040177856A1 (en) * 2002-11-19 2004-09-16 Luis Monsalud Process for making a bandcast tobacco sheet and smoking article therefrom
US6799578B2 (en) * 2000-09-18 2004-10-05 Rothmans, Benson & Hedges Inc. Low sidestream smoke cigarette with combustible paper
US6823872B2 (en) * 1997-04-07 2004-11-30 Schweitzer-Mauduit International, Inc. Smoking article with reduced carbon monoxide delivery
US6837248B2 (en) * 2001-02-26 2005-01-04 Lorillard Licensing Company, Llc Reduced ignition propensity smoking article
US20050056294A1 (en) * 2002-11-19 2005-03-17 Wanna Joseph T. Modified reconstituted tobacco sheet

Family Cites Families (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2366187A (en) * 1940-12-31 1945-01-02 Friedwald Harry Machine for coloring cigarette wrappers
US2336187A (en) 1941-12-02 1943-12-07 Crompton & Knowles Loom Works Picker spindle lubricator
US2776912A (en) 1952-04-30 1957-01-08 Hercules Powder Co Ltd Process of coating paper with a gellable water-soluble cellulose derivative and pigment and gelling said coating
NL209991A (en) 1955-08-26
GB903067A (en) * 1961-03-06 1962-08-09 Lorillard Co P Smoking tobacco product
US3943762A (en) 1974-10-15 1976-03-16 John Baer Rain gauge
EP0193607B1 (en) 1984-09-03 1989-01-25 Japan Tobacco Inc. Cigarette
WO1988001478A1 (en) 1986-08-27 1988-03-10 Gallaher Limited Smoking rod wrapper and compositions for their production
JPS63198965A (en) * 1987-02-14 1988-08-17 木村 勉 Cigarette
US4924888A (en) 1987-05-15 1990-05-15 R. J. Reynolds Tobacco Company Smoking article
US5074321A (en) 1989-09-29 1991-12-24 R. J. Reynolds Tobacco Company Cigarette
US5271419A (en) 1989-09-29 1993-12-21 R. J. Reynolds Tobacco Company Cigarette
EP0419975A3 (en) 1989-09-29 1991-08-07 R.J. Reynolds Tobacco Company Cigarette and smokable filler material therefor
US5060673A (en) 1989-09-29 1991-10-29 R. J. Reynolds Tobacco Company Agglomerated matrix for cigarettes and method for making same
US5170807A (en) 1990-07-20 1992-12-15 Kimberly Clark Corporation Method of producing a non-burning outer wrapper for use with smoking products
US5258340A (en) * 1991-02-15 1993-11-02 Philip Morris Incorporated Mixed transition metal oxide catalysts for conversion of carbon monoxide and method for producing the catalysts
US5468266A (en) 1993-06-02 1995-11-21 Philip Morris Incorporated Method for making a carbonaceous heat source containing metal oxide
JPH0880182A (en) * 1994-09-10 1996-03-26 Ryumei Kin Tobacco filter containing oxidizer
JP2947735B2 (en) 1995-08-09 1999-09-13 三島製紙株式会社 Water dispersible sheet and tobacco using the same
JP3648072B2 (en) * 1998-09-22 2005-05-18 三菱レイヨン株式会社 Cigarette filter
GB9928853D0 (en) 1999-12-07 2000-02-02 British American Tobacco Co Improvements relating to smoking articles
US6854469B1 (en) 2001-06-27 2005-02-15 Lloyd Harmon Hancock Method for producing a reduced ignition propensity smoking article
DE10146810A1 (en) * 2001-09-22 2003-04-10 Ufl Umweltanalytik Und Forschu Reducing carbon monoxide content of cigarettes involves addition to the tobacco of equal amounts of iron-2,3-oxide and calcium oxide
AT5523U1 (en) 2001-10-22 2002-08-26 Tann Papier CIGARETTE WITH INCREASED SELF-DELETING TENDENCY
AT412608B (en) 2002-02-01 2005-05-25 Tricon Consulting Gmbh & Co Kg METHOD FOR PRODUCING PATTERN PRINTED PAPER
US6769437B2 (en) * 2002-04-08 2004-08-03 Philip Morris Incorporated Use of oxyhydroxide compounds for reducing carbon monoxide in the mainstream smoke of a cigarette
KR100961605B1 (en) * 2002-04-12 2010-06-07 필립모리스 프로덕츠 에스.에이. Partially reduced nanoparticle additives
GB0209690D0 (en) 2002-04-27 2002-06-05 British American Tobacco Co Improvements relating to smoking articles and smokable filler materials therefor
US20040037395A1 (en) 2002-06-20 2004-02-26 Kenichiro Itoh Telephone apparatus
US6827087B2 (en) 2002-11-19 2004-12-07 Joseph T. Wanna Cigarette with burn rate modification
US7234471B2 (en) 2003-10-09 2007-06-26 R. J. Reynolds Tobacco Company Cigarette and wrapping materials therefor
US20070002176A1 (en) 2003-03-11 2007-01-04 Koninklijke Philips Electronics N.V. Intelligent network interface module
US7165553B2 (en) 2003-06-13 2007-01-23 Philip Morris Usa Inc. Nanoscale catalyst particles/aluminosilicate to reduce carbon monoxide in the mainstream smoke of a cigarette
US9119421B2 (en) * 2003-06-13 2015-09-01 Philip Morris Usa Inc. Cigarette wrapper with printed catalyst
US7152609B2 (en) 2003-06-13 2006-12-26 Philip Morris Usa Inc. Catalyst to reduce carbon monoxide and nitric oxide from the mainstream smoke of a cigarette
US9107452B2 (en) * 2003-06-13 2015-08-18 Philip Morris Usa Inc. Catalyst to reduce carbon monoxide in the mainstream smoke of a cigarette
US20050005947A1 (en) 2003-07-11 2005-01-13 Schweitzer-Mauduit International, Inc. Smoking articles having reduced carbon monoxide delivery
US20070084475A1 (en) 2005-10-14 2007-04-19 Oglesby Robert L Smoking articles and wrapping materials therefor
US20070137668A1 (en) 2005-12-15 2007-06-21 Borschke August J Smoking articles and wrapping materials therefor
US20070246055A1 (en) 2006-04-21 2007-10-25 Oglesby Robert L Smoking articles and wrapping materials therefor
US20080115794A1 (en) 2006-11-21 2008-05-22 Robert Leslie Oglesby Smoking articles and wrapping materials therefor

Patent Citations (98)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2003690A (en) * 1933-03-28 1935-06-04 Lucy O Lewton Tobacco product
US1996002A (en) * 1933-05-25 1935-03-26 Seaman Stewart Elmer Decreasing inflammability of cigarettes
US2013508A (en) * 1933-05-25 1935-09-03 Seaman Stewart Elmer Difficultly flammable cigarette wrapper
US3215579A (en) * 1963-01-23 1965-11-02 Formica Corp Process for releasing laminates
US3428053A (en) * 1965-10-07 1969-02-18 American Tobacco Co Production of reconstituted tobacco
US3353541A (en) * 1966-06-16 1967-11-21 Philip Morris Inc Tobacco sheet material
US3386449A (en) * 1966-06-16 1968-06-04 Philip Morris Inc Method of making a reconstituted tobacco sheet
US3415253A (en) * 1967-01-13 1968-12-10 Philip Morris Inc Process for manufacturing reconstituted tobacco sheet material in a substantially closed system
US3420241A (en) * 1967-04-28 1969-01-07 Philip Morris Inc Method of preparing a reconstituted tobacco sheet employing a pectin adhesive
US3561451A (en) * 1967-05-17 1971-02-09 American Mach & Foundry Process of manufacturing reconstituted tobacco of light color
US3472237A (en) * 1967-05-24 1969-10-14 Steber Corp Irradiated tobacco process and product
US3467109A (en) * 1967-06-12 1969-09-16 Lorillard Co Inc P Method and apparatus for making reconstituted tobacco
US3736940A (en) * 1967-07-18 1973-06-05 Pastou J Saint Cigarette with ash-retaining means
US3483874A (en) * 1967-11-29 1969-12-16 Philip Morris Inc Process for the treatment of tobacco
US3511247A (en) * 1968-05-10 1970-05-12 Philip Morris Inc Smoking product and method of making the same
US3526904A (en) * 1968-05-10 1970-09-01 Philip Morris Inc Film covered,apertured cigarette wrapper
US3620801A (en) * 1968-06-07 1971-11-16 Wiggins Teape Res Dev Sized transfer sheet
US3621851A (en) * 1969-11-26 1971-11-23 Kata Mfg & Filtering Co Filter for smoker's article
US3760815A (en) * 1971-01-06 1973-09-25 Philip Morris Inc Preparation of reconstituted tobacco
US3699973A (en) * 1971-07-06 1972-10-24 Philip Morris Inc Film covering for apertured smoking product wrapper
US3860012A (en) * 1973-05-21 1975-01-14 Kimberly Clark Co Method of producing a reconstituted tobacco product
US3847164A (en) * 1973-10-11 1974-11-12 Kimberly Clark Co Method of making reconstituted tobacco having reduced nitrates
US3911932A (en) * 1974-07-31 1975-10-14 Philip Morris Inc Control of smoking delivery through cigarette paper porosity
US4077414A (en) * 1975-01-09 1978-03-07 Brown & Williamson Tobacco Corporation Smoking articles
US4129134A (en) * 1975-04-14 1978-12-12 Philip Morris Incorporated Smoking article
US4193412A (en) * 1976-12-23 1980-03-18 Rhodia Ag Additive for smoking tobacco products, filter elements thereof and process for the preparation thereof
US4146040A (en) * 1977-03-17 1979-03-27 Cohn Charles C Cigarettes
US4182349A (en) * 1977-11-04 1980-01-08 Kimberly-Clark Corporation Method of making reconstituted tobacco
US4222740A (en) * 1979-03-05 1980-09-16 Armstrong Cork Company Coloration method for textiles
US4267240A (en) * 1979-11-13 1981-05-12 Formica Corporation Release sheets and process of use
US4303084A (en) * 1980-07-14 1981-12-01 Eli Simon Self-extinguishing cigarettes
US4452259A (en) * 1981-07-10 1984-06-05 Loews Theatres, Inc. Smoking articles having a reduced free burn time
US4481960A (en) * 1981-08-05 1984-11-13 British-American Tobacco Company Limited Cigarettes
US4351638A (en) * 1981-09-21 1982-09-28 Burlington Industries, Inc. Process of reactively dyeing and printing toweling
US4880870A (en) * 1982-09-23 1989-11-14 Hoechst Aktiengesellschaft Polymer granulate, a process for its preparation, and its use
US4453553A (en) * 1983-01-24 1984-06-12 Cohn Charles C Treatment of cigarette paper
US4607647A (en) * 1983-06-15 1986-08-26 British-American Tobacco Company Limited Smoking articles
US4615345A (en) * 1983-08-08 1986-10-07 Kimberly-Clark Corporation Wrapper constructions for self-extinguishing smoking articles
US4622983A (en) * 1983-08-08 1986-11-18 Kimberly-Clark Corporation Reduced ignition proclivity smoking article wrapper and smoking article
US4674519A (en) * 1984-05-25 1987-06-23 Philip Morris Incorporated Cohesive tobacco composition
US4590955A (en) * 1984-07-11 1986-05-27 Olin Corporation Cigarette paper with reduced CO on burning
US4679575A (en) * 1984-11-23 1987-07-14 Japan Tobacco Inc. Cigarette
US4805644A (en) * 1986-06-30 1989-02-21 Kimberly-Clark Corporation Sidestream reducing cigarette paper
US4739775A (en) * 1986-09-26 1988-04-26 Kimberly-Clark Corporation Wrapper constructions for self-extinguishing and reduced ignition proclivity smoking articles
US4943762A (en) * 1988-01-27 1990-07-24 Codar Technology, Inc. Power supply system
US5040551A (en) * 1988-11-01 1991-08-20 Catalytica, Inc. Optimizing the oxidation of carbon monoxide
US4984589A (en) * 1988-11-30 1991-01-15 Julius Glatz Gmbh Wrapper for smoking article
US5092353A (en) * 1989-01-18 1992-03-03 R. J. Reynolds Tobacco Company Cigarette
US5057606A (en) * 1989-01-24 1991-10-15 Minnesota Mining And Manufacturing Company Form-in-place polysaccharide gels
US4998542A (en) * 1989-02-23 1991-03-12 Philip Morris Incorporated Wrapper for smoking articles and method for preparing same
US5143099A (en) * 1989-08-14 1992-09-01 Papeteries De Mauduit Double wrapped cigarettes with reduced spotting and method of manufacture
US5161549A (en) * 1990-03-20 1992-11-10 Regional Research & Development Corporation Pure clean cigarette filter
US5261425A (en) * 1990-05-24 1993-11-16 R. J. Reynolds Tobacco Company Cigarette
US5221502A (en) * 1990-12-11 1993-06-22 Philip Morris Incorporated Process for making a flavorant-release filament
US5144966A (en) * 1990-12-11 1992-09-08 Philip Morris Incorporated Filamentary flavorant-release additive for smoking compositions
US5131416A (en) * 1990-12-17 1992-07-21 R. J. Reynolds Tobacco Company Cigarette
US5178167A (en) * 1991-06-28 1993-01-12 R. J. Reynolds Tobacco Company Carbonaceous composition for fuel elements of smoking articles and method of modifying the burning characteristics thereof
US5263999A (en) * 1991-09-10 1993-11-23 Philip Morris Incorporated Smoking article wrapper for controlling burn rate and method for making same
US5417228A (en) * 1991-09-10 1995-05-23 Philip Morris Incorporated Smoking article wrapper for controlling burn rate and method for making same
US5220930A (en) * 1992-02-26 1993-06-22 R. J. Reynolds Tobacco Company Cigarette with wrapper having additive package
US5724998A (en) * 1992-04-09 1998-03-10 Philip Morris Incorporated Reconstituted tobacco sheets and methods for producing and using the same
US5621425A (en) * 1992-12-24 1997-04-15 Seiko Instruments Inc. Liquid crystal display device
US5765570A (en) * 1993-04-30 1998-06-16 Brown & Williamson Tobacco Corporation Reconstituted tobacco product
US5540242A (en) * 1993-07-07 1996-07-30 Brown & Williamson Tobacco Corporation Cigarette paper having reduced sidestream properties
US5690787A (en) * 1993-12-16 1997-11-25 Kimberly-Clark Worldwide, Inc. Polymer reinforced paper having improved cross-direction tear
US5820998A (en) * 1994-03-08 1998-10-13 Schweitzer-Mauduit International, Inc. Coated paper and process for making the same
US5715844A (en) * 1994-09-01 1998-02-10 R. J. Reynolds Tobacco Company Tobacco reconstitution process
US5722433A (en) * 1995-08-09 1998-03-03 Mishima Paper Co., Ltd. Water-dispersible sheet for cigarettes and cigarette using the same
US6371127B1 (en) * 1996-10-15 2002-04-16 Rothmans, Benson & Hedges Inc. Cigarette sidestream smoke and free-burn rate control device
US5878754A (en) * 1997-03-10 1999-03-09 Schweitzer-Mauduit International, Inc. Smoking article wrapper for controlling ignition proclivity of a smoking article
US5878753A (en) * 1997-03-11 1999-03-09 Schweitzer-Mauduit International, Inc. Smoking article wrapper for controlling ignition proclivity of a smoking article without affecting smoking characteristics
US5893372A (en) * 1997-04-07 1999-04-13 Schweitzer Maudit International, Inc. High opacity wrapping paper
US6823872B2 (en) * 1997-04-07 2004-11-30 Schweitzer-Mauduit International, Inc. Smoking article with reduced carbon monoxide delivery
US6305382B1 (en) * 1997-04-07 2001-10-23 Schweitzer-Mauduit International, Inc. Reduced basis weight cigarette paper
US6615842B1 (en) * 1998-02-13 2003-09-09 Cerami Consulting Corp. Methods for removing nucleophilic toxins from tobacco smoke
US6129087A (en) * 1998-03-25 2000-10-10 Brown & Williamson Tobacco Corporation Reduced ignition propensity smoking articles
US6286516B1 (en) * 1998-04-16 2001-09-11 Rothmans, Benson & Hedges Inc. Cigarette sidestream smoke treatment material
US6289898B1 (en) * 1999-07-28 2001-09-18 Philip Morris Incorporated Smoking article wrapper with improved filler
US6314964B1 (en) * 1999-09-15 2001-11-13 Schweitzer-Mauduit International, Inc. Cigarette paper containing carbon fibers for improved ash characteristics
US20020000235A1 (en) * 2000-05-11 2002-01-03 Kenneth Shafer Cigarette with smoke constituent attenuator
US6568403B2 (en) * 2000-06-22 2003-05-27 Schweitzer-Mauduit International, Inc. Paper wrapper for reduction of cigarette burn rate
US6799578B2 (en) * 2000-09-18 2004-10-05 Rothmans, Benson & Hedges Inc. Low sidestream smoke cigarette with combustible paper
US6810884B2 (en) * 2000-09-18 2004-11-02 Rothmans, Benson & Hedges Inc. Low sidestream smoke cigarette with non-combustible treatment material
US6679270B2 (en) * 2000-10-05 2004-01-20 Nicolas Baskevitch Reduction of nitrosamines in tobacco and tobacco products
US6725867B2 (en) * 2000-11-13 2004-04-27 Schweitzer-Mauduit International, Inc. Process for producing smoking articles with reduced ignition proclivity characteristics and products made according to same
US20040011368A1 (en) * 2001-01-15 2004-01-22 Takeo Tsutsumi Cigarette
US6645605B2 (en) * 2001-01-15 2003-11-11 James Rodney Hammersmith Materials and method of making same for low ignition propensity products
US6837248B2 (en) * 2001-02-26 2005-01-04 Lorillard Licensing Company, Llc Reduced ignition propensity smoking article
US6606999B2 (en) * 2001-03-27 2003-08-19 R. J. Reynolds Tobacco Company Reduced ignition propensity smoking article
US20040123874A1 (en) * 2001-03-28 2004-07-01 Zawadzki Michael A. Reduced ignition propensity smoking article with a polysaccharide treated wrapper
US20040084171A1 (en) * 2001-05-18 2004-05-06 Thixomat, Inc. Apparatus for molding metals
US20040020502A1 (en) * 2001-08-13 2004-02-05 Agustin Tosas Fuentes Method of preparing paper for self-extinguishing cigarettes
US20030131860A1 (en) * 2001-08-14 2003-07-17 Ashcraft Charles Ray Wrapping materials for smoking articles
US6637439B2 (en) * 2001-08-31 2003-10-28 Philip Morris Incorporated Tobacco smoking mixture for smoking articles such as cigarettes
US6779530B2 (en) * 2002-01-23 2004-08-24 Schweitzer-Mauduit International, Inc. Smoking articles with reduced ignition proclivity characteristics
US20040020504A1 (en) * 2002-03-15 2004-02-05 Rothmans, Benson & Hedges Inc. Low sidestream smoke cigarette with combustible paper having a modified ash
US20040177856A1 (en) * 2002-11-19 2004-09-16 Luis Monsalud Process for making a bandcast tobacco sheet and smoking article therefrom
US20050056294A1 (en) * 2002-11-19 2005-03-17 Wanna Joseph T. Modified reconstituted tobacco sheet

Cited By (93)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060037621A1 (en) * 2000-11-10 2006-02-23 Bereman Robert D Method of making a smoking composition
US20050056294A1 (en) * 2002-11-19 2005-03-17 Wanna Joseph T. Modified reconstituted tobacco sheet
US8136533B2 (en) 2002-11-19 2012-03-20 R.J. Reynolds Tobacco Company Reconstituted tobacco sheet and smoking article therefrom
US20080006286A1 (en) * 2002-11-19 2008-01-10 John-Paul Mua Reconstituted Tobacco Sheet and Smoking Article Therefrom
US20050039767A1 (en) * 2002-11-19 2005-02-24 John-Paul Mua Reconstituted tobacco sheet and smoking article therefrom
US8353301B2 (en) 2003-07-11 2013-01-15 Schweitzer-Mauduit International, Inc. Smoking articles having reduced carbon monoxide delivery
US8443812B2 (en) 2003-07-11 2013-05-21 Schweitzer-Mauduit International, Inc. Smoking articles having reduced carbon monoxide delivery
US20090283104A1 (en) * 2003-07-11 2009-11-19 Hampl Jr Vladimir Smoking Articles Having Reduced Carbon Monoxide Delivery
WO2006086023A1 (en) * 2005-02-07 2006-08-17 Schweitzer-Mauduit International, Inc. Smoking articles having reduced analyte levels and process for making same
US8151806B2 (en) 2005-02-07 2012-04-10 Schweitzer-Mauduit International, Inc. Smoking articles having reduced analyte levels and process for making same
EP2319333A1 (en) * 2005-02-07 2011-05-11 Schweitzer-Mauduit International, Inc. Smoking articles having reduced analyte levels and process for making same
US20110000497A1 (en) * 2005-02-07 2011-01-06 Schweitzer-Mauduit International, Inc. Smoking Articles Having Reduced Analyte Levels and Process For Making Same
US10188140B2 (en) 2005-08-01 2019-01-29 R.J. Reynolds Tobacco Company Smoking article
US20100186757A1 (en) * 2005-08-01 2010-07-29 Crooks Evon L Smoking Article
US8678013B2 (en) 2005-08-01 2014-03-25 R.J. Reynolds Tobacco Company Smoking article
US8646463B2 (en) 2005-08-15 2014-02-11 Philip Morris Usa Inc. Gravure-printed, banded cigarette paper
US20070102017A1 (en) * 2005-08-15 2007-05-10 Philip Morris Usa Inc., Richmond, Va Usa. Gravure-printed, branded cigarette paper
US20070157940A1 (en) * 2006-01-06 2007-07-12 R. J. Reynolds Tobacco Company Smoking articles comprising inner wrapping strips
EP3569079A1 (en) 2006-03-16 2019-11-20 R. J. Reynolds Tobacco Company Smoking article
EP2241203A2 (en) 2006-03-16 2010-10-20 R. J. Reynolds Tobacco Company Smoking Article
US12048325B2 (en) 2006-03-16 2024-07-30 R.J. Reynolds Tobacco Company Smoking article
EP2762020A2 (en) 2006-03-16 2014-08-06 R. J. Reynolds Tobacco Company Smoking article
US20070215168A1 (en) * 2006-03-16 2007-09-20 Banerjee Chandra K Smoking article
US10258079B2 (en) 2006-03-16 2019-04-16 R.J. Reynolds Tobacco Company Smoking article
US9220301B2 (en) 2006-03-16 2015-12-29 R.J. Reynolds Tobacco Company Smoking article
US20070215167A1 (en) * 2006-03-16 2007-09-20 Evon Llewellyn Crooks Smoking article
EP2486812A1 (en) 2006-03-16 2012-08-15 R.J. Reynolds Tobacco Company Smoking article
US9161570B2 (en) 2006-03-31 2015-10-20 Philip Morris Usa Inc. Banded papers, smoking articles and methods
US20110155158A1 (en) * 2006-03-31 2011-06-30 Philip Morris Usa Inc. Banded Papers, Smoking Articles and Methods
US12108784B2 (en) 2006-03-31 2024-10-08 Altria Client Services Llc Banded papers, smoking articles and methods
US8925556B2 (en) 2006-03-31 2015-01-06 Philip Morris Usa Inc. Banded papers, smoking articles and methods
US11547140B2 (en) 2006-03-31 2023-01-10 Philip Morris Usa Inc. Banded papers, smoking articles and methods
US10485265B2 (en) 2006-03-31 2019-11-26 Philip Morris Usa Inc. Banded papers, smoking articles and methods
US10028524B2 (en) 2006-03-31 2018-07-24 Philip Morris Usa Inc. Banded papers, smoking articles and methods
US8905043B2 (en) 2006-03-31 2014-12-09 Philip Morris Usa Inc. Banded papers, smoking articles and methods
US20080295854A1 (en) * 2006-03-31 2008-12-04 Philip Morris Usa Inc. Banded papers, smoking articles and methods
US8707967B2 (en) 2006-03-31 2014-04-29 Philip Morris Usa Inc. Banded papers, smoking articles and methods
US8733370B2 (en) 2006-03-31 2014-05-27 Philip Morris Usa Inc. Banded papers, smoking articles and methods
US8939156B2 (en) 2006-03-31 2015-01-27 Philip Morris Usa Inc. Banded papers, smoking articles and methods
US8833377B2 (en) 2006-03-31 2014-09-16 Philip Morris Usa Inc. Banded papers, smoking articles and methods
US8844540B2 (en) 2006-03-31 2014-09-30 Philip Morris Usa Inc. Banded papers, smoking articles and methods
US8869805B2 (en) 2006-06-01 2014-10-28 Schweitzer-Mauduit International, Inc. Free air burning smoking articles with reduced ignition proclivity characteristics
US20070295348A1 (en) * 2006-06-01 2007-12-27 Schweitzer-Mauduit International, Inc. Free air burning smoking articles with reduced ignition proclivity characteristics
EP3494819A1 (en) 2006-10-18 2019-06-12 R. J. Reynolds Tobacco Company Tobacco-containing smoking article
EP3677129A1 (en) 2006-10-18 2020-07-08 RAI Strategic Holdings, Inc. Tobacco-containing smoking article
US11986009B2 (en) 2006-10-18 2024-05-21 Rai Strategic Holdings, Inc. Tobacco-containing smoking article
US11980220B2 (en) 2006-10-18 2024-05-14 Rai Strategic Holdings, Inc. Tobacco-containing smoking article
US11925202B2 (en) 2006-10-18 2024-03-12 Rai Strategic Holdings, Inc. Tobacco-containing smoking article
US11805806B2 (en) 2006-10-18 2023-11-07 Rai Strategic Holdings, Inc. Tobacco-containing smoking article
US11785978B2 (en) 2006-10-18 2023-10-17 Rai Strategic Holdings, Inc. Tobacco-containing smoking article
US11758936B2 (en) 2006-10-18 2023-09-19 Rai Strategic Holdings, Inc. Tobacco-containing smoking article
US11647781B2 (en) 2006-10-18 2023-05-16 Rai Strategic Holdings, Inc. Tobacco-containing smoking article
US11641871B2 (en) 2006-10-18 2023-05-09 Rai Strategic Holdings, Inc. Tobacco-containing smoking article
EP3831225A1 (en) 2006-10-18 2021-06-09 R.J. Reynolds Tobacco Company Tobacco-containing smoking article
EP3508076A1 (en) 2006-10-18 2019-07-10 R. J. Reynolds Tobacco Company Tobacco-containing smoking article
EP3260002A1 (en) 2006-10-18 2017-12-27 R.J.Reynolds Tobacco Company Tobacco-containing smoking article
EP3266322A1 (en) 2006-10-18 2018-01-10 R.J.Reynolds Tobacco Company Tobacco-containing smoking article
EP3491944A1 (en) 2006-10-18 2019-06-05 R. J. Reynolds Tobacco Company Tobacco-containing smoking article
WO2008108889A1 (en) 2006-10-18 2008-09-12 R.J.Reynolds Tobacco Company Tobacco-containing smoking article
US20080216852A1 (en) * 2006-12-29 2008-09-11 Philip Morris Usa Inc. Banded cigarette paper with reduced ignition propensity
US20080173320A1 (en) * 2007-01-19 2008-07-24 R. J. Reynolds Tobacco Company Filtered Smoking Articles
US20100180903A1 (en) * 2007-03-27 2010-07-22 Wendy Cooper Smoking Article with Thermoresilient Design and Methods of Producing the Same
US8590542B2 (en) 2007-03-27 2013-11-26 British American Tobacco (Investments) Limited Smoking article with thermoresilient design and methods of producing the same
US20110023901A1 (en) * 2009-07-30 2011-02-03 Philip Morris Usa Inc. Banded paper, smoking article and method
US8701682B2 (en) 2009-07-30 2014-04-22 Philip Morris Usa Inc. Banded paper, smoking article and method
WO2011131464A1 (en) * 2010-04-22 2011-10-27 British American Tobacco (Investments) Limited Low ignition propensity smoking article and an apparatus and method for forming a low ignition propensity smoking article
US11602161B2 (en) 2010-12-13 2023-03-14 Altria Client Services Llc Cigarette wrapper with novel pattern
US11707082B2 (en) 2010-12-13 2023-07-25 Altria Client Services Llc Process of preparing printing solution and making patterned cigarette wrapper
US10375988B2 (en) 2010-12-13 2019-08-13 Altria Client Services Llc Cigarette wrapper with novel pattern
US9302522B2 (en) 2010-12-13 2016-04-05 Altria Client Services Llc Process of preparing printing solution and making patterned cigarette wrappers
US10905154B2 (en) 2011-05-16 2021-02-02 Altria Client Services Llc Alternating patterns in cigarette wrapper, smoking article and method
US9732475B2 (en) 2011-06-09 2017-08-15 Miquel Y Costas & Miquel, S.A. Composition for coating a paper wrapper for smoking articles
WO2012168516A1 (en) * 2011-06-09 2012-12-13 Miquel Y Costas & Miquel, S.A. Composition for coating a paper wrapper for smoking requisites
ES2393460A1 (en) * 2011-06-09 2012-12-21 Miquel Y Costas & Miquel, S.A. Composition for coating a paper wrapper for smoking requisites
EP2719293B1 (en) 2011-06-09 2017-05-24 Miquel y Costas & Miquel, S.A. Composition for coating a paper wrapper for smoking articles
GB2492086A (en) * 2011-06-20 2012-12-26 British American Tobacco Co Smoking article with additional tobacco patch
US11779051B2 (en) 2011-08-09 2023-10-10 Rai Strategic Holdings, Inc. Smoking articles and use thereof for yielding inhalation materials
WO2013170028A1 (en) * 2012-05-09 2013-11-14 Lanig Le Bec Tobacco product that produces lower carbon monoxide to tar ratio
US11064729B2 (en) 2012-05-16 2021-07-20 Altria Client Services Llc Cigarette wrapper with novel pattern
US9668516B2 (en) 2012-05-16 2017-06-06 Altria Client Services Llc Banded cigarette wrapper with opened-area bands
US10681935B2 (en) 2012-05-16 2020-06-16 Altria Client Services Llc Banded cigarette wrapper with opened-area bands
US12075818B2 (en) 2012-05-16 2024-09-03 Altria Client Services Llc Banded cigarette wrapper with opened-area bands
US9247769B2 (en) 2012-10-11 2016-02-02 Schweitzer-Mauduit International, Inc. Wrapper having reduced ignition proclivity characteristics
US9149068B2 (en) 2012-10-11 2015-10-06 Schweitzer-Mauduit International, Inc. Wrapper having reduced ignition proclivity characteristics
US9688030B2 (en) * 2013-05-07 2017-06-27 Neuvokas Corporation Method of manufacturing a composite material
US20140332996A1 (en) * 2013-05-07 2014-11-13 Neuvokas Corporation Method of manufacturing a composite material
US11659868B2 (en) 2014-02-28 2023-05-30 Rai Strategic Holdings, Inc. Control body for an electronic smoking article
US11864584B2 (en) 2014-02-28 2024-01-09 Rai Strategic Holdings, Inc. Control body for an electronic smoking article
US10682818B2 (en) 2015-07-02 2020-06-16 Neuvokas Corporation Method of manufacturing a composite material
WO2021009730A1 (en) 2019-07-18 2021-01-21 R. J. Reynolds Tobacco Company Thermal energy absorbers for tobacco heating products
US11919254B2 (en) 2019-11-12 2024-03-05 Neuvokas Corporation Method of manufacturing a composite material
US11946204B2 (en) * 2020-11-12 2024-04-02 Sun Chemical Corporation Titanium dioxide-free cigarette tipping inks
US20230002973A1 (en) * 2020-11-12 2023-01-05 Sun Chemical Corporation Titanium dioxide-free cigarette tipping inks

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US20120012124A1 (en) 2012-01-19
US8353301B2 (en) 2013-01-15

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