Cigarette Paper Patents (Class 162/139)
  • Publication number: 20080053470
    Abstract: The invention is related to an environmentally friendly cigarette replacement, which is mainly made of the skin or mixture of skin and flesh from natural fruits, such as oranges—tangerines—Sunkist—lemons. After the dehydration, the material is added to cigarette manufacturing process to replace nicotine as the main ingredient in the cigarette replacement. It reduces the harm of smoking and maintains smoker's health. The product is easy to burn. When the cigarette replacement is burning, it releases natural fruit odor and eliminates bad odors of the environment. Besides, the fruit skin contains citric acid, vitamin P (hesperidin), vitamin C, Synephrine, and flavonoids that are beneficial to health in weight control, skin care and anti-aging.
    Type: Application
    Filed: September 1, 2006
    Publication date: March 6, 2008
    Inventor: Wu-Ming Tzung
  • Patent number: 7237559
    Abstract: Smokable rods of cigarettes are manufactured using wrapping materials that incorporate at least one fibrous material (e.g., flax fibers, hardwood pulp fibers and/or softwood pulp fibers) at least one filler material (e.g., calcium carbonate in particulate form). The wrapping materials possess multi-layer coatings. The wrapping materials possess coatings in the form of series of spaced apart bands, each band possessing a series of layers. At least one of the coating layers can have a filler material dispersed or suspended within a film-forming material of that layer. For a representative wrapping material, a pattern of applied to the wire side major surface of the wrapping material substrate as a plurality of layers, and at least one of the layers includes ethylcellulose and calcium carbonate. For that layer, the calcium carbonate is present in an amount greater than the ethylcellulose, on a weight basis.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: July 3, 2007
    Assignee: R.J. Reynolds Tobacco Company
    Inventors: Charles Ray Ashcraft, James Herbert Ellis, Jr., James Ray Hutchens, Gregory Scott Pierce, John Joseph Tomel, Jr., Don Hayes White, Sara Sutton Williard, Paul Stuart Chapman, Mark Stuart Powell
  • Patent number: 7219672
    Abstract: A method is described for the manufacture of a paper for self-extinguishing cigarettes, by reducing its permeability to air, obtained by applying continuously or onto well defined areas, a composition based on gum Arabic or acacia gum, with or without a fire retardant filler, the application of which is carried out by printing techniques such as serigraphy, heliogravure, flexography or off-set. The concentration of the gum arabic or acacia gum in said composition may vary between 0.15% and 50% by weight, while the amount of product deposited onto the cigarette paper may vary between 0.5 g/m2 and 10 g/m2, by weight.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: May 22, 2007
    Assignee: Miquel Y. Costas & Miquel S.A.
    Inventors: Agusting Tosas Fuentes, Pablo De Mariscal Ruigomez
  • Patent number: 7216652
    Abstract: The invention relates to a tobacco smoking article wrapper which selectively reduces the content of gaseous components in the smoke delivered during the use of the smoking article. The gaseous components can be low molecular weight aldehydes in the smoke produced during combustion/pyrolysis of the smoking article. The wrapper can comprise cigarette paper having an ammonium-containing compound filler therein for reducing the aldehyde content in the smoke. The ammonium-containing compound filler evolves ammonia upon combustion/pyrolysis of the smoking article which can chemically react with aldehydes in tobacco smoke and/or modify the combustion/pyrolysis reactions thereby reducing the initial formation of aldehydes to selectively reduce such aldehydes from the smoke inhaled by a smoker. The ammonium-containing compound can be magnesium ammonium phosphate used alone or in combination with one or more other fillers such as calcium carbonate.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: May 15, 2007
    Assignee: Philip Morris USA Inc.
    Inventors: Jay A. Fournier, John B. Paine, III
  • Patent number: 7165553
    Abstract: A smoking article composition and a method of making a smoking article composition comprising tobacco cut filler, cigarette paper and/or cigarette filter material further comprising a catalyst capable of converting carbon monoxide to carbon dioxide, wherein the catalyst comprises nanoscale catalyst particles dispersed within a porous aluminosilicate matrix. The catalyst can be formed by combining nanoscale catalyst particles or a metal precursor solution thereof with an alumina-silica sol mixture to form a slurry, gelling the slurry to form the co-gel, heating the co-gel to form a catalyst comprising nanoscale catalyst particles dispersed within a porous aluminosilicate matrix. The catalyst can be incorporated in tobacco cut filler, cigarette paper and/or cigarette filter material by spraying, dusting and/or immersion.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: January 23, 2007
    Assignee: Philip Morris USA Inc.
    Inventors: Zhaohua Luan, Jay A Fournier, Sarojini Deevi, Ila Skinner, Kent B. Koller, Diane L. Gee
  • Patent number: 7052581
    Abstract: A process for converting the more easily synthesized and stored AMP hexahydrate into monohydrate of high purity. The resultant monohydrate (dittmarite) can then be either dried to stabilize it, or used directly in cigarette production such as paper making as filler or a filler component together with calcium carbonate.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: May 30, 2006
    Assignee: Philip Morris USA Inc.
    Inventors: Warren D. Winterson, John F. Cunningham
  • Patent number: 6997190
    Abstract: Smokable rods of cigarettes are manufactured using wrapping materials that incorporate at least one fibrous material (e.g., flax fibers, hardwood pulp fibers and/or softwood pulp fibers) at least one filler material (e.g., calcium carbonate in particulate form). The wrapping materials possess multi-layer coatings. The wrapping materials possess coatings in the form of series of spaced apart bands, each band possessing a series of layers. At least one of the coating layers can have a filler material dispersed or suspended within a film-forming material of that layer.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: February 14, 2006
    Assignee: R.J. Reynolds Tobacco Company
    Inventors: Cynthia Stewart Stokes, Robert Henry Powell, Brian Michael Lawrence
  • Patent number: 6976493
    Abstract: Smokable rods of cigarettes are manufactured using wrapping materials that incorporate at least one fibrous material (e.g., flax fibers, hardwood pulp fibers and/or softwood pulp fibers) at least one filler material (e.g., calcium carbonate in particulate form). The wrapping materials possess multi-layer coatings. The wrapping materials possess coatings in the form of series of spaced apart bands, each band possessing a series of layers. At least one of the coating layers can have a filler material dispersed or suspended within a film-forming material of that layer.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: December 20, 2005
    Assignee: R.J. Reynolds Tobacco Company
    Inventors: Paul Stuart Chapman, Sara Sutton Williard, Charles Ray Ashcraft, James Herbert Ellis, Jr., James Ray Hutchens, Gregory Scott Pierce, John Joseph Tomel, Jr., Mark Stuart Powell
  • Patent number: 6935346
    Abstract: The invention describes a smoking article (1) comprising a wrapper (3) enwrapping a tobacco smoking material (2), the wrapper comprising a ceramic material and being capable of mechanically trapping mainly aqueous particulate phase materials in the sidestream smoke, thereby reducing sidestream smoke deliveries considerably despite the use of the wrapper with conventional tobacco materials.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: August 30, 2005
    Inventors: Alison Bushby, Kevin Gerard McAdam, Nicholas Leslie Timms
  • Patent number: 6929013
    Abstract: Smokable rods of cigarettes are manufactured using wrapping materials that incorporate at least one fibrous material (e.g., flax fibers, hardwood pulp fibers and/or softwood pulp fibers) at least one filler material (e.g., calcium carbonate in particulate form). The wrapping materials possess multi-layer coatings. The wrapping materials possess coatings in the form of series of spaced apart bands, each band possessing a series of layers. At least one of the coating layers can have a filler material dispersed or suspended within a film-forming material of that layer.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: August 16, 2005
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Charles Ray Ashcraft, James Herbert Ellis, Jr., James Ray Hutchens, Gregory Scott Pierce, John Joseph Tomel, Jr., Don Hayes White, Sara Sutton Williard, Paul Stuart Chapman, Mark Stuart Powell
  • Patent number: 6904918
    Abstract: A low sidestream smoke cigarette comprises a conventional tobacco rod and a non-combustible treatment material for the rod. The treatment material has a porosity less than about 200 Coresta units and a sidestream smoke treatment composition. The treatment composition comprises, in combination, an oxygen storage and donor metal oxide oxidation catalyst and an essentially non-combustible finely divided porous particulate adjunct for said catalyst. In addition, the invention provides a low sidestream smoke cigarette unit that comprises a cigarette with conventional cigarette paper surrounding a conventional tobacco rod and a non-combustible treatment material surrounding and being substantially in contact with the conventional cigarette paper.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: June 14, 2005
    Assignee: Rothmans, Benson & Hedges Inc.
    Inventors: Stanislav M. Snaidr, E. Robert Becker
  • Patent number: 6883524
    Abstract: Wrapper paper for a smoking article carries 1 g/m2 to 15 g/m2 of a burn adjusting agent and 1 g/m2 to 30 g/m2 of a calcium phosphate-based compound in the wrapper paper.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: April 26, 2005
    Assignee: Japan Tobacco Inc.
    Inventors: Satoshi Ishikawa, Takeo Tsutsumi, Makoto Sato, Kaoru Inoue
  • Publication number: 20040255966
    Abstract: A process for reducing the permeability of a paper wrapper used in the construction of a smoking article is disclosed. The paper wrapper is treated with a film-forming composition that forms treated discrete areas on the wrapper. The treated discrete areas have a permeability within a predetermined range sufficient to reduce the ignition proclivity properties of a smoking article made with the wrapper. In accordance with the present invention, the film-forming composition contains a film-forming material. The film-forming material has a relatively low viscosity. In this manner, the film-forming composition can have a relatively high solids content and still be applied to the wrapper using conventional techniques, such as by using a gravure printer.
    Type: Application
    Filed: July 14, 2004
    Publication date: December 23, 2004
    Inventor: Thomas A. Kraker
  • Patent number: 6830053
    Abstract: A cigarette wrapper paper formed of a pulp containing at least 60% by weight of fibrous components, particularly, a flax pulp. The cigarette wrapper paper permits markedly suppressing the scattering of the cigarette ash without increasing the addition amount of a loading material promoting combustion or the addition amount of a combustion assistant.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: December 14, 2004
    Assignee: Japan Tobacco Inc.
    Inventors: Yasuo Tanaka, Atsushi Nagao
  • Publication number: 20040238136
    Abstract: Cigarettes are manufactured using modified automated cigarette making apparatus. Those cigarettes possess smokable rods having paper wrapping materials having additive materials applied thereto as patterns. The additive material can be applied as a coating formulation in an off-line manner to a continuous paper sheet web that is later used for cigarette manufacture. The additive material can be applied as a coating formulation in an on-line manner to continuous paper web moving through an operating cigarette making machine. The coating formulation is applied to the paper web using roll applicator techniques, ink jet printing techniques or electrostatic precipitation techniques. Liquid coating formulation are curable, and are virtually absent of solvent or liquid carrier. Radiation, such as ultraviolet or electron beam radiation, is used to solidify and fix polymerizable liquid components of the coating formulation that have been applied to the paper web.
    Type: Application
    Filed: May 16, 2003
    Publication date: December 2, 2004
    Inventors: Pankaj Patel, Charles Ray Ashcraft, John Joseph Tomel, Gregory Alan Holmes, Vernon Brent Barnes, Lloyd Harmon Hancock
  • Patent number: 6823872
    Abstract: The present invention is generally directed to smoking articles having reduced carbon monoxide delivery. In order to reduce carbon monoxide delivery, the wrapping papers used to construct the smoking article has a fiber basis weight of less than about 18 gsm. Smoking articles constructed in accordance with the present invention can have a carbon monoxide delivery less than about 18 mg per smoking article.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: November 30, 2004
    Assignee: Schweitzer-Mauduit International, Inc.
    Inventor: Vladimir Hampl, Jr.
  • Patent number: 6823873
    Abstract: A cigarette includes an ignition element in contact with tobacco, surrounded by a composite outer wrapper. The outer wrapper is impervious to oxygen causing the tobacco to extinguish between puffs. The ignition element, however, has a longer static burn time than the tobacco and remains smoldering between puffs. Upon a subsequent puff, the smoldering ignition element re-ignites the tobacco. One or more initially-occluded perforations in the outer layer maintain the uniformity in combustion of the tobacco and ignition element.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: November 30, 2004
    Assignee: Philip Morris USA Inc.
    Inventors: Walter A. Nichols, John R. Hearn, F. Murphy Sprinkel, Jr., Jay A Fournier, Jerry F. Whidby
  • Publication number: 20040231685
    Abstract: Cigarettes are manufactured using modified automated cigarette making apparatus. Those cigarettes possess smokable rods having paper wrapping materials having additive materials applied thereto as patterns. The additive material can be applied as a coating formulation in an off-line manner to a continuous paper sheet web that is later used for cigarette manufacture. The additive material can be applied as a coating formulation in an on-line manner to continuous paper web moving through an operating cigarette making machine. The coating formulation is applied to the paper web using roll applicator techniques, ink jet printing techniques or electrostatic precipitation techniques. Liquid coating formulation are curable, and are virtually absent of solvent or liquid carrier. Radiation, such as ultraviolet or electron beam radiation, is used to solidify and fix polymerizable liquid components of the coating formulation that have been applied to the paper web.
    Type: Application
    Filed: September 17, 2003
    Publication date: November 25, 2004
    Inventors: Pankaj Patel, Charles Ray Ashcraft, John Joseph Tomel, Gregory Alan Holmes, Vernon Brent Barnes, Lloyd Harmon Hancock, James Herbert Ellis, James Ray Hutchens, Gregory Scott Pierce, Don Hayes White
  • Patent number: 6817365
    Abstract: A cigarette paper includes heat-degradable filler particles to increase the porosity of the cigarette paper during smoking of the cigarette. The porosity of the cigarette paper during smoking of the cigarette will typically be from about 30% to abut 60%. The heat-degradable filler particles are capable of being dissipated at temperatures from about 25° C. to about 350° C. and/or at distances from about 0.1 mm to about 10 mm in advance of a charline formed in the cigarette paper during combustion of the cigarette. Methods of making the cigarette paper, a cigarette using the cigarette paper, and methods for making and smoking such a cigarette are also provided.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: November 16, 2004
    Assignee: Philip Morris USA Inc.
    Inventors: Mohammad Hajaligol, W. Geoffrey Chan
  • Publication number: 20040221861
    Abstract: A cigarette with an increased self-extinguishing tendency, wherein the cigarette paper has annular zones whose porosity is reduced by the presence of a polymer, whose interfacial tension is over 33 mJ/m2.
    Type: Application
    Filed: April 21, 2004
    Publication date: November 11, 2004
    Inventor: Markus Eibl
  • Publication number: 20040216755
    Abstract: The invention relates to a method of and to an apparatus for ascertaining at least one parameter of cigarette paper or the like, such as a running web of cigarette paper at least one side of which carries or should carry longitudinally spaced-apart coatings, e.g., consisting of silicate or cellulose and suitable to serve as so-called burning or combustion stops. A source of electromagnetic radiation cooperates with a polarizer to direct radiation against one side of the running web at an angle of between about 0° and 75° to the plane of the web at the locus of impingement of radiation. The radiation which has penetrated through the web is measured by a photosensitive detector which transmits corresponding signals to an evaluating arrangement serving to ascertain one or more characteristics of the coatings.
    Type: Application
    Filed: June 7, 2004
    Publication date: November 4, 2004
    Applicant: Hauni Maschinenbau AG
    Inventor: Dierk Schroder
  • Patent number: 6810884
    Abstract: A low sidestream smoke cigarette comprises a conventional tobacco rod and a non-combustible treatment material for the rod. The treatment material has a porosity less than about 200 Coresta units and a sidestream smoke treatment composition. The treatment composition comprises, in combination, an oxygen storage and donor metal oxide oxidation catalyst and an essentially non-combustible finely divided porous particulate adjunct for said catalyst. In addition, the invention provides a low sidestream smoke cigarette unit that comprises a cigarette with conventional cigarette paper surrounding a conventional tobacco rod and a non-combustible treatment material surrounding and being substantially in contact with the conventional cigarette paper.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: November 2, 2004
    Assignee: Rothmans, Benson & Hedges Inc.
    Inventors: Stanislav M. Snaidr, Robert E. Becker
  • Publication number: 20040214702
    Abstract: A process for producing artificial fibers without significant fiber surface hydrolysis from waste cellulose acetate continuous filament or filter rods which can then be used in the manufacture of specific paper products. Waste cellulose acetate fibers generated during filament manufacture or cigarette manufacture as off quality production is used for rendering the into a form suitable for specific paper manufacture. Paper products which comprise 1-10% of the subject fiber as part of the pulp furnish is also disclosed.
    Type: Application
    Filed: April 19, 2004
    Publication date: October 28, 2004
    Inventors: Herbert D. Stroud, Melvin G. Mitchell
  • Publication number: 20040182407
    Abstract: A process for reducing the permeability of a paper wrapper used in the construction of a smoking article is disclosed. The paper wrapper is treated with a film-forming composition that forms treated discrete areas on the wrapper. The treated discrete areas have a permeability within a predetermined range sufficient to reduce the ignition proclivity properties of a smoking article made with the wrapper. In accordance with the present invention, the film-forming composition is applied as multiple layers to the paper wrapper. After each application step, the wrapper is dried. Applying the film-forming composition to the paper wrapper in multiple layers minimizes distortion and other adverse affects that may occur to the wrapper.
    Type: Application
    Filed: March 30, 2004
    Publication date: September 23, 2004
    Inventors: Richard M. Peterson, Joseph S. Kucherovsky, Thomas A. Kraker
  • Patent number: 6792953
    Abstract: A tobacco smoke filter a copper-containing porphyrin or an iron analog of C.I. Reactive Blue 21 dye. A method of making a first tobacco smoke filter segment, comprising the steps of, first, providing one or more than one substance; producing a mixture of cellulose fiber and the substance; heating the mixture for a sufficient time at one or more than one temperature sufficient to covalently link the substance to the cellulose fiber; and forming the cellulose fiber with covalently bound substance into the first tobacco smoke filter segment. The substance can be a copper-containing porphyrin or an iron analog of C.I. Reactive Blue 21 dye.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: September 21, 2004
    Assignee: Filligent Limited
    Inventors: Craig A. Lesser, Reid W. Von Borstel
  • Publication number: 20040168695
    Abstract: A low sidestream smoke cigarette comprises a conventional tobacco rod, and a combustible treatment paper having a sidestream smoke treatment composition. The treatment composition comprises in combination, an oxygen storage and donor metal oxide oxidation catalyst and an essentially non-combustible finely divided porous particulate adjunct for said catalyst.
    Type: Application
    Filed: March 12, 2004
    Publication date: September 2, 2004
    Applicant: Rothmans, Benson & Hedges Inc.
    Inventors: Stanislav M. Snaidr, E. Robert Becker
  • Patent number: 6779530
    Abstract: A process for reducing the permeability of a paper wrapper used in the construction of a smoking article is disclosed. The paper wrapper is treated with a film-forming composition that forms treated discrete areas on the wrapper. The treated discrete areas have a permeability within a predetermined range sufficient to reduce the ignition proclivity properties of a smoking article made with the wrapper. In accordance with the present invention, the film-forming composition contains a film-forming material. The film-forming material has a relatively low viscosity. In this manner, the film-forming composition can have a relatively high solids content and still be applied to the wrapper using conventional techniques, such as by using a gravure printer.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: August 24, 2004
    Assignee: Schweitzer-Mauduit International, Inc.
    Inventor: Thomas A. Kraker
  • Publication number: 20040159414
    Abstract: A cigarette is provided which includes a tobacco strand wrapped with a layer of paper having a water repellent impregnation made from a cellulose derivative. The water repellant impregnation is applied in at least two layers.
    Type: Application
    Filed: February 6, 2004
    Publication date: August 19, 2004
    Applicant: Tann-Papier Gesellschaft M.B.H.
    Inventor: Gunther Durhammer
  • Publication number: 20040154630
    Abstract: A double wrapper cigarette produced by a manufacturing machine and method according to the invention includes an inner wrapper (6) wrapped around a rod-like filler including a tobacco material, an outer wrapper (8) surrounding the inner wrapper (6), and a perfume emitting layer (10) provided between the inner wrapper (6) and the outer wrapper (8). The perfume emitting layer (10) includes a perfume material for weakening odor of sidestream smoke of the cigarette.
    Type: Application
    Filed: February 5, 2004
    Publication date: August 12, 2004
    Inventors: Hiromi Tabuchi, Masaomi Fukamachi, Hidetoshi Okuyama
  • Publication number: 20040134631
    Abstract: The present invention provides wrapping materials suitable for use with smoking articles, the wrapping materials comprising ultrafine particles. The present invention is described with reference to a cigarette having a wrapping material comprising ultrafine particles. The ultrafine particles may be distributed in regions throughout the wrapping material in the form of patterns including longitudinal or circumferential bands.
    Type: Application
    Filed: January 15, 2003
    Publication date: July 15, 2004
    Inventors: Evon Llewellyn Crooks, Stephen Benson Sears, Stephen Keith Cole, Chandra Kumar Banerjee
  • Publication number: 20040129283
    Abstract: Paper having a reduced smolder and burn tendencies for producing wrappers for smoking articles, for example cigarettes, is provided by adding phyllosilicates with water-absorbing capacities to the paper.
    Type: Application
    Filed: December 22, 2003
    Publication date: July 8, 2004
    Inventors: Johannes M. Trummer, Thomas Fritzsching
  • Publication number: 20040094173
    Abstract: Wrapper paper for a smoking article carries 1 g/m2 to 15 g/m2 of a burn adjusting agent and 1 g/m2 to 30 g/m2 of a calcium phosphate-based compound in the wrapper paper.
    Type: Application
    Filed: November 13, 2003
    Publication date: May 20, 2004
    Inventors: Satoshi Ishikawa, Takeo Tsutsumi, Makoto Sato, Kaoru Inoue
  • Publication number: 20040094174
    Abstract: A wrapper paper for a smoking article, which permits decreasing an amount of visible sidestream smoke of tobacco, contains at least 30 g/m2 of calcium carbonate and at least 3% by mass of a burn adjusting agent.
    Type: Application
    Filed: November 13, 2003
    Publication date: May 20, 2004
    Inventors: Satoshi Ishikawa, Takeo Tsutsumi, Makoto Sato, Kaoru Inoue
  • Patent number: 6725867
    Abstract: A process for reducing the permeability of a paper wrapper used in the construction of a smoking article is disclosed. The paper wrapper is treated with a film-forming composition that forms treated discrete areas on the wrapper. The treated discrete areas have a permeability within a predetermined range sufficient to reduce the ignition proclivity properties of a smoking article made with the wrapper. In accordance with the present invention, the film-forming composition is applied as multiple layers to the paper wrapper. After each application step, the wrapper is dried. Applying the film-forming composition to the paper wrapper in multiple layers minimizes distortion and other adverse affects that may occur to the wrapper.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: April 27, 2004
    Assignee: Schweitzer-Mauduit International, Inc.
    Inventors: Richard M. Peterson, Joseph S. Kucherovsky, Thomas A. Kraker
  • Patent number: 6722373
    Abstract: A cigarette sidestream smoke treatment material made from a sheet of non-combustible active components provides a porous structure capable of treating sidestream smoke. The treatment material, as used in combination with a cigarette, provides a low sidestream smoke emitting cigarette unit. The material has a porosity which encourages a conventional free-burn rate of a conventional cigarette. The material may comprise a sorbent capable of sorbing components of the sidestream smoke, and an oxygen storage component which releases oxygen at free-burn rate temperatures to ensure that conventional free-burn rate is maintained and to enhance the oxidation treatment of the adsorbed non-aqueous components. Preferably, an oxidation catalyst is included in the material and most desirably the oxygen storage component may also function as the oxidation catalyst. Particularly preferred materials which perform the dual function are oxides of cerium.
    Type: Grant
    Filed: November 5, 2002
    Date of Patent: April 20, 2004
    Assignee: Rothmans, Benson & Hedges Inc.
    Inventors: Larry Bowen, Stanislav M. Snaidr, E. Robert Becker, Warren A. Brackmann
  • Patent number: 6722372
    Abstract: A smoking article particularly to eliminate spotting or staining and provide good smoke quality includes a double wrap smoking article which includes an outer wrap of a conventional cigarette paper and an inner wrap which is comprised of from about 55 to 85% wood fibers and 15 to 45% flax fibers, a basis weight of 12-15 gm/M2 and a porosity of 200 to 160,000 Coresta or greater.
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: April 20, 2004
    Assignee: Brown & Williamson Tobacco Corporation
    Inventor: Daniel V. Cantrell
  • Patent number: 6706120
    Abstract: A method of fixing a flavorant for improving the small of a sidestream smoke of tobacco. This method includes applying, to tobacco wrapper paper, a tobacco sidestream smoke smell-improving agent including an ethanol or propylene glycol solution of the flavorant added to an emulsion of an ethylene-vinyl acetate copolymer having an ethylene content of 30% by weight or less, the emulsion having a solid content of 10 to 60% by weight, and drying it to fix the flavorant to the wrapper paper. The ethanol solution of the flavorant is added to the emulsion such that an amount of ethanol is 40% by weight or less with respect to 100% by weight of the emulsion, while the propylene glycol of the flavorant is added to the emulsion such that an amount of propylene glycol is 11% by weight or less with respect to 100% by weight of the emulsion.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: March 16, 2004
    Assignee: Japan Tobacco Inc.
    Inventors: Masato Miyauchi, Hideki Nagae, Hiroshi Tanabe, Hiroaki Nakano
  • Patent number: 6676806
    Abstract: A process for increasing the wet tensile strength properties of a porous plug wrap paper for use in smoking articles is disclosed. The wet strength properties of the paper are increased by incorporating into the paper an alkyl ketene dimer and by applying a size containing polyvinyl alcohol to a surface of the paper. The wet strength properties of the paper can be increased without using cross-linking agents. Porous plug wrap papers made in accordance with the present invention can have a wet tensile strength retention of at least 20%.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: January 13, 2004
    Assignee: Schweitzer-Mauduit International, Inc.
    Inventor: Jon R. Butt, Sr.
  • Patent number: 6645605
    Abstract: Novel materials for making low ignition propensity products are disclosed. Specifically, a treated cigarette paper for making low ignition propensity cigarettes are disclosed. The cigarette base paper containing a thermoplastic polymer aqueous suspension coated regions on a surface of the base paper so as to obtain coresta porosities of less than 15 is provided. This cigarette paper is further treated with a conditioning medium which is either water alone or water with a burning chemical such as an alkali metal containing organic salt either on the same surface bearing the thermoplastic polymer or on the opposite surface. The self-extinction characteristics of the cigarettes with the treated paper are improved. A method for making a cigarette paper for low ignition propensity cigarettes comprising a plurality of regions of a thermoplastic polymer aqueous suspension printed on to a surface of a base paper is also provided.
    Type: Grant
    Filed: January 15, 2001
    Date of Patent: November 11, 2003
    Inventors: James Rodney Hammersmith, Vaughn Allen Bryson
  • Patent number: 6596125
    Abstract: A method and apparatus of manufacturing a web which is striped with add-on material, comprising: a first slurry supply which forms a sheet of base web and moves the sheet along a first path; a second slurry supply; and a moving orifice applicator operative so as to repetitively discharge the second slurry upon the moving sheet of base web. The moving orifice applicator includes a chamber box arranged to establish a reservoir of the second slurry across the first path, an endless belt having slotted orifices, the endless belt received through the chamber box, and a drive arrangement operative upon the endless belt to continuously move the orifices along an endless-path and repetitively through the chamber box. The orifices communicate with the reservoir to discharge the second slurry as bands of add-on material to the base web. The slotted orifices can be spaced apart along the belt and oriented so as to be angled with respect to the travel direction of the belt and parallel to each other.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: July 22, 2003
    Assignee: Philip Morris Incorporated
    Inventors: Rajesh Garg, Tony Phan
  • Patent number: 6595217
    Abstract: Cigarette filter rod employs as filtration material moisture disintegrative paper. The moisture disintegration index of the paper does not exceed 20.
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: July 22, 2003
    Assignee: British-American Tobacco Company Limited
    Inventors: Paul David Case, Martin Coleman
  • Patent number: 6584981
    Abstract: The present invention is directed to a method for improving the ash characteristics of a paper wrapper for a smoking article and for improving the ash characteristics of the smoking article itself. Specifically, it has been unexpectedly discovered that the ash cohesiveness of a paper wrapper is noticeably improved when carbon fibers having an average length less than about 0.75 inches are incorporated into the paper in an amount up to about 60% by weight. Paper wrappers made with carbon fibers in accordance with the present invention have superior ash characteristics in comparison to paper wrappers incorporating only flax or other cellulosic fibers. Further, the ash cohesiveness of the paper is improved without resulting in the decline in the quality of other ash characteristics.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: July 1, 2003
    Assignee: Schweitzer-Mauduit International, Inc.
    Inventor: Vladimir Hampl, Jr.
  • Publication number: 20030116293
    Abstract: Fibers are produced from an acetone solution of cellulose acetate by pulling or extruding such material through a spinneret in a dry spinning process. A vacuum is applied to the thus formed fibers after a certain degree of drying. A dried outer skin is formed, and the vacuum causes the solvent inside the skin to explode or pop and exit the fiber along micro-porous paths thereby producing high surface area fibers with micro-porous cavities and internal void volume. Such micro-cavities are particularly useful for retaining solid and/or liquid reagents in a cigarette filter for selective filtration of various smoke components.
    Type: Application
    Filed: April 16, 2002
    Publication date: June 26, 2003
    Inventors: Lixin Xue, Kent B. Koller, Qiong Gao
  • Publication number: 20030116169
    Abstract: A cigarette sidestream smoke treatment material made from a sheet of non-combustible active components provides a porous structure capable of treating sidestream smoke. The treatment material, as used in combination with a cigarette, provides a low sidestream smoke emitting cigarette unit. The material has a porosity which encourages a conventional free-burn rate of a conventional cigarette. The material may comprise a sorbent capable of sorbing components of the sidestream smoke, and an oxygen storage component which releases oxygen at free-burn rate temperatures to ensure that conventional free-burn rate is maintained and to enhance the oxidation treatment of the adsorbed non-aqueous components. Preferably, an oxidation catalyst is included in the material and most desirably the oxygen storage component may also function as the oxidation catalyst. Particularly preferred materials which perform the dual function are oxides of cerium.
    Type: Application
    Filed: November 5, 2002
    Publication date: June 26, 2003
    Applicant: Rothmans, Benson & Hedges Inc.
    Inventors: Larry Bowen, Stanislav M. Snaidr, Robert E. Becker, Warren A. Brackmann
  • Patent number: 6578584
    Abstract: The invention relates to a smoking article (1) having a high proportion of non-combustible, inorganic material and a relatively low level of visible sidestream. The smoking article includes a substantially non-combustible, wrapper (5) which extends along the full length of the smoking material rod and enwraps a combustible fuel source (6) and aerosol generator (7), both of which extend substantially along the length of the smoking material rod. Various suitable fuel source systems and aerosol generating systems are described. The article has a visible burn line which advances along the article and produces an ash which can be removed by the smoker in the normal way.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: June 17, 2003
    Assignee: British American Tobacco (Investments) Limited
    Inventors: John Lawson Beven, David John Dittrich, Colin Campbell Greig, Richard Geoffrey Hook, Kevin Gerard McAdam, Rosemary Elizabeth O'Reilly
  • Patent number: 6568402
    Abstract: The cigarette filter wrapper paper has a paper layer which has a first surface and a second surface. The filter wrapper paper exhibits a first overlap air permeability, measured when a perforated tip paper is overlapped on the first surface, and a second overlap air permeability, measured when a perforated tip paper is overlapped on the second surface. The first overlap air permeability is higher than the second overlap air permeability.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: May 27, 2003
    Assignee: Japan Tobacco Inc.
    Inventors: Kazuyo Kaneki, Takaichi Yoshida, Keigo Miura, Osamu Komatsubara, Hideaki Katsumata, Hiroshi Hara
  • Patent number: 6568403
    Abstract: A method of reducing the burn rate of a smoking article is provided. Specifically, the burn rate is reduced by incorporating into a paper wrapper of the smoking article a filler (e.g., precipitated calcium carbonate) having a median particle size greater than about 2.5 microns. For instance, such paper wrappers formed according to the present invention typically have a Diffusion Conductance Index (DCI) of less than about 15 cm−1 and a Static Burn Rate (SBR) of less than about 5 millimeters per minute.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: May 27, 2003
    Assignee: Schweitzer-Mauduit International, Inc.
    Inventors: Vladimir Hampl, Jr., Larry D. Snow, Tom Kraker
  • Publication number: 20030089377
    Abstract: A cigarette paper includes heat-degradable filler particles to increase the porosity of the cigarette paper during smoking of the cigarette. The porosity of the cigarette paper during smoking of the cigarette will typically be from about 30% to abut 60%. The heat-degradable filler particles are capable of being dissipated at temperatures from about 25° C. to about 350° C. and/or at distances from about 0.1 mm to about 10 mm in advance of a charline formed in the cigarette paper during combustion of the cigarette. Methods of making the cigarette paper, a cigarette using the cigarette paper, and methods for making and smoking such a cigarette are also provided.
    Type: Application
    Filed: November 15, 2001
    Publication date: May 15, 2003
    Inventors: Mohammad Hajaligol, W. Geoffrey Chan
  • Patent number: 6557561
    Abstract: A cigarette paper having a sidestream smoke smell-improving agent including a lactone in its free state, or a salt of a hydroxy acid corresponding to the lactone, as well as a cigarette wrapped by the cigarette paper. The salt of the hydroxy acid can be an alkali metal salt or an alkaline earth metal salt. The lactone can be a lactone having five or more ring members. The lactone can be a &ggr;-lactone or a &dgr;-lactone.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: May 6, 2003
    Assignee: Japan Tobacco Inc.
    Inventors: Masato Miyauchi, Toru Sakurai, Hideki Nagae, Hiroshi Tanabe, Hiroaki Nakano
  • Publication number: 20030056913
    Abstract: A process for converting the more easily synthesized and stored AMP hexahydrate into monohydrate of high purity. The resultant monohydrate (dittmarite) can then be either dried to stabilize it, or used directly in cigarette production such as paper making as filler or a filler component together with calcium carbonate.
    Type: Application
    Filed: July 25, 2002
    Publication date: March 27, 2003
    Inventors: Warren D. Winterson, John F. Cunningham