Cigarette Paper Patents (Class 162/139)
  • Publication number: 20020189625
    Abstract: 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: Application
    Filed: June 5, 2002
    Publication date: December 19, 2002
    Inventors: Alison Bushby, Kevin Gerard McAdam, Nicholas Leslie Timms
  • Publication number: 20020179105
    Abstract: A smoking article having reduced ignition propensity is disclosed. The smoking article includes a tobacco column, a wrapper surrounding the tobacco column and a filter element. The wrapper has a base permeability, an untreated area and a least one discrete area treated with a composition to reducing the base permeability. The discretely treated area interacts with a coal of a burning tobacco firecone as it advances to self-extinguish the smoking article. The composition of the treated area includes a permeability reducing substance, a burn rate retarding substance and a burn rate accelerating substance. Either the burn rate retarding substance or the burn rate accelerating substance acts as an organoleptic enhancing substance. In this way a smoker's experience when smoking either the at least one treated area or the untreated area is substantially the same.
    Type: Application
    Filed: February 26, 2001
    Publication date: December 5, 2002
    Inventors: Michael A. Zawadzki, Arthur M. Ihrig, David A. Grider, Terry D. Jessup, David L. Williams
  • Patent number: 6478032
    Abstract: The invention relates to a cigarette paper having a low total filler content, 20% by weight of the paper or less, a proportion of the filler being a filler capable of effecting visible sidestream smoke reduction. The basis weight of the paper is about 30 g m−2 or more. Smoking articles made with such papers provide a synergistic sidestream smoke component reduction when compared with control cigarettes. Papers according to the invention with the addition of various burn additives are also described.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: November 12, 2002
    Assignee: British-American Tobacco (Investments) Limited
    Inventors: Paul David Case, Alan George Stephenson
  • Patent number: 6457475
    Abstract: A filter-tipped cigarette comprises a tobacco rod including a tobacco filler and a tobacco wrapper paper wrapped around the tobacco filler, a filter including a filter member and a filter wrapper paper integrally wrapped around the filter member, and a tip paper sheet having a plurality of apertures arranged along a circumferential direction and connecting the tobacco rod and the filter. The filter wrapper paper has an embossment on substantially an overall surface of the filter wrapper paper. The filter wrapper paper and the tip paper are adhered to each other selectively at projections of the embossment of the filter wrapper paper.
    Type: Grant
    Filed: May 9, 2001
    Date of Patent: October 1, 2002
    Assignee: Japan Tobacco, Inc.
    Inventors: Shichisei Tani, Toshiaki Okusawa, Kazuhiro Noda
  • Patent number: 6440223
    Abstract: This invention provides a method for improving the flavor and aroma properties in a smoking article. A high fructose corn syrup, ammonium hydroxide and diammonium phosphate are reacted with each other for a time and under conditions sufficient to provide a heat activatable flavorant-generating composition, which comprises 2-deoxy 2-amino glucose. The composition is incorporated into a component of said smoking article without heat treatment. The resultant smoking articles, when smoked, exhibit highly desirable flavor and aroma properties.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: August 27, 2002
    Assignee: R. J. Reynolds Tobacco Co.
    Inventors: Michael Francis Dube, William Monroe Coleman, III, Luis Mayan Dominguez, Kenneth Wayne Smith
  • Patent number: 6405734
    Abstract: A low-sidestream-smoke cigarette comprises a dual-structure wrapper that wraps filler shreds (5) therein. An inner wrapper (6) of the wrapper is formed of papermaking sheet tobacco or slurry sheet tobacco, while an outer wrapper (8) is ordinary paper. In the case where the inner wrapper (6) is slurry sheet tobacco, the inner wrapper (6) wraps the filler shreds (5) therein so that its smooth surface is situated on the side of the filler shreds (5).
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: June 18, 2002
    Assignee: Japan Tobacco Inc.
    Inventors: Atsunari Hanada, Masahiko Nagai, Hisashi Ishikawa, Toru Sakurai
  • Publication number: 20020069888
    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: Application
    Filed: November 13, 2001
    Publication date: June 13, 2002
    Inventor: Vladimir Hampl
  • Publication number: 20020053350
    Abstract: A filter-tipped cigarette comprises a tobacco rod including a tobacco filler and a tobacco wrapper paper wrapped around the tobacco filler, a filter including a filter member and a filter wrapper paper integrally wrapped around the filter member, and a tip paper sheet having a plurality of apertures arranged along a circumferential direction and connecting the tobacco rod and the filter. The filter wrapper paper has an embossment on substantially an overall surface of the filter wrapper paper. The filter wrapper paper and the tip paper are adhered to each other selectively at projections of the embossment of the filter wrapper paper.
    Type: Application
    Filed: May 9, 2001
    Publication date: May 9, 2002
    Inventors: Shichisei Tani, Toshiaki Okusawa, Kazuhiro Noda
  • Patent number: 6378528
    Abstract: An improved substrate for use in smoking articles is produced by infusing aerosol forming material into tobacco. The infusion can take place in one or multiple steps. Preferably, about 10% to about 40% by weight of aerosol former, such as glycerin is infused into strip tobacco at elevated temperatures. The tobacco containing the aerosol former may then be dried, equilibrated to ambient conditions and/or blended with tobacco which does not have added aerosol former. Preferably the resulting material is again infused with an additional about 5% to about 15% by weight of aerosol former, at elevated temperatures. The new substrate material, and the method for making it, result in a substrate which has reduced migration of aerosol former and substantially improved manufacturing characteristics.
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: April 30, 2002
    Assignee: R.J. Reynolds Tobacco Company
    Inventors: Dwayne William Beeson, Gary Roger Shelar, Chandra Kumar Banerjee, Billy Tyrone Conner, Randall Allison Hoots
  • Patent number: 6367481
    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 the ignition element.
    Type: Grant
    Filed: February 4, 2000
    Date of Patent: April 9, 2002
    Assignee: Philip Morris Incorporated
    Inventors: Walter A. Nichols, John R. Hearn, F. Murphy Sprinkel, Jr., Jay A Fournier, Jerry F. Whidby
  • Publication number: 20020026948
    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: Application
    Filed: June 15, 2001
    Publication date: March 7, 2002
    Applicant: Schweitzer-Mauduit International, Inc.
    Inventors: Vladimir Hampl, Larry D. Snow, Tom Kraker
  • Publication number: 20020002979
    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: August 7, 2001
    Publication date: January 10, 2002
    Inventors: Larry Bowen, Stanislav M. Snaidr, E. Robert Becker, Warren A. Brackmann
  • Patent number: 6314964
    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: September 15, 1999
    Date of Patent: November 13, 2001
    Assignee: Schweitzer-Mauduit International, Inc.
    Inventor: Vladimir Hampl, Jr.
  • Patent number: 6302114
    Abstract: The present invention provides a tobacco smoke filter or filter element having a longitudinally extending core (2) and a wrapper (4) engaged around the core (2), the wrapper (4) having particulate additive (6) adhered to one or more portion(s) of the radially inner face thereof with said wrapper (4) being free of additive around its circumference at one or both ends of the core.
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: October 16, 2001
    Assignee: Cigarette Components Limited
    Inventors: Paul Francis Clarke, John Charlton
  • Patent number: 6298860
    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 discovered that the ash characteristics of a paper wrapper are noticeably improved when the paper is treated with a carboxylic acid salt solution having a pH of from about 5.5 to about 8.0. The carboxylic acid salt solution can be for instance, an aqueous solution containing a metal succinate or a metal citrate.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: October 9, 2001
    Assignee: Schweitzer-Mauduit International, Inc.
    Inventors: Vladimir Hampl, Jr., Kerry Mahone
  • Patent number: 6289898
    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: September 20, 1999
    Date of Patent: September 18, 2001
    Assignee: Philip Morris Incorporated
    Inventors: Jay A Fournier, John B. Paine, III
  • Patent number: 6286516
    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: April 16, 1999
    Date of Patent: September 11, 2001
    Assignee: Rothmans, Benson & Hedges Inc.
    Inventors: Larry Bowen, Stanislav M. Snaidr, E. Robert Becker, Warren A. Brackmann
  • Patent number: 6164443
    Abstract: A new tobacco wrapping paper for allowing a person to roll their own cigars. The inventive device includes a plurality of tobacco sheets of wrapping paper. The tobacco sheets of wrapping paper are comprised of a blend of tobacco and pulp products. The tobacco sheets each have a generally rectangular configuration defined by opposed long edges and opposed short edges. Each of the tobacco sheets have a layer of adhesive disposed thereon inwardly of one of the opposed long edges thereof. A package is dimensioned for containing the plurality of tobacco sheets therein.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: December 26, 2000
    Inventors: Donald G. Mitchell, Gerardo Soto
  • Patent number: 6138684
    Abstract: The paper for rolling a smoking article of the present invention contains particle-form calcium carbonate (30 to 60 wt %), calcined clay (5 to 30 wt %) and pulp. Furthermore, an alkaline metal salt is contained as a chemical additive. In addition, kaolin is contained in the paper. The basis weight of the paper falls within the range of 20 to 70 g/m.sup.2. Optical characteristics of the paper and the burning characteristics and ash characteristics of a cigarette are improved and the side stream smoke is reduced.
    Type: Grant
    Filed: May 7, 1997
    Date of Patent: October 31, 2000
    Assignee: Japan Tobacco Inc.
    Inventors: Akira Yamazaki, Kazuko Takeda, Atsunari Hanada, Tomoaki Ogawa
  • Patent number: 6095152
    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: February 27, 1997
    Date of Patent: August 1, 2000
    Assignee: British-American Tobacco Company Limited
    Inventors: John Lawson Beven, David John Dittrich, Colin Campbell Greig, Richard Geoffrey Hook, Kevin Gerard McAdam, Rosemary Elizabeth O'Reilly
  • Patent number: 6019106
    Abstract: A cigarette has a shredded tobacco filler and a paper for wrapping the filler. Many frusto-pyramidal portions biting into the filler are formed so as to be distributed on an inner surface of the paper except on both of the side edge portions of the inner surface. The inner surface, so formed, provides a high coefficient of friction with respect to the shredded tobacco filler. This cigarette contributes to preventing the dropping of shredded tobacco from the cut end of the cigarette.
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: February 1, 2000
    Assignee: Japan Tobacco Inc.
    Inventors: Toshiaki Okusawa, Shichisei Tani, Takashi Koyama, Takashi Yokoyama
  • Patent number: 5997691
    Abstract: A method and apparatus of manufacturing a web which is striped with add-on material, comprising: a first arrangement which establishes a sheet of base web from a first slurry and moves the established sheet along a first path; a second arrangement for preparing a second slurry; a moving orifice applicator operative so as to repetitively discharge the second slurry upon the moving sheet of base web, the moving orifice applicator comprising: a chamber box arranged to establish a reservoir of the second slurry across the first path; an endless belt having an orifice, the endless belt received through the chamber box; a drive arrangement operative upon the endless belt to continuously move the orifice along an endless path and repetitively through the chamber box, the orifice when communicated with the reservoir being operative to discharge the second slurry from the reservoir through the orifice; a flow distribution system for introducing the second slurry into the chamber box at spaced-apart feed locations alon
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: December 7, 1999
    Assignee: Philip Morris Incorporated
    Inventors: Navin Gautam, Harry V. Lanzillotti, Tyrone W. Murray, D. Anh Phan, Jon R. Butt, Sr., H. Edmund Clark, Thomas E. Dougherty, Thomas L. Fillio, Vladimir Hampl, Jr., Phillip L. Ursery, Edwin L. Cutright, Ronald L. Edwards
  • Patent number: 5979461
    Abstract: Hydromagnesite-magnesium hydroxide compositions which, when used as fillers in smoking article wrappers, significantly reduce the amount of sidestream smoke produced by the burning smoking article while providing the smoking article with good subjective characteristics.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: November 9, 1999
    Assignee: Philip Morris Inc.
    Inventors: Azzedine Bensalem, Warren Chang, Jay A Fournier, Andrew G. Kallianos, John B. Paine, III, Kenneth F. Podraza, Donald M. Schleich, Jeffrey I. Seeman
  • Patent number: 5921249
    Abstract: A method for controlling the permeability of a wrapping paper for smoking articles is disclosed. Specifically, the permeability of the paper is varied by incorporating into the paper a filler material having a particular particle size. In one embodiment, for instance, a filler having a size larger than conventional sized fillers is incorporated into a wrapping paper for significantly increasing the permeability of the wrapping paper. For instance, wrapping papers can be constructed in accordance with the present invention having a permeability of greater than 80 CORESTA units without having to perforate the papers.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: July 13, 1999
    Assignee: Schweitzer-Mauduit International, Inc.
    Inventor: Vladimir Hampl, Jr.
  • Patent number: 5888348
    Abstract: The present invention is directed to a method for controlling and adjusting the permeability of a cigarette wrapping paper. Permeability is controlled in the paper by adding different sized filler particles in different proportionate amounts. Permeability of the paper is altered without having to change the total amount of filler in the paper. By selectively controlling the permeability of the paper, various characteristics and properties of a cigarette made with the paper can be likewise modified as desired. In one embodiment of the present invention, the permeability of a cigarette wrapper can be automatically maintained or adjusted as the paper is being made.
    Type: Grant
    Filed: November 14, 1996
    Date of Patent: March 30, 1999
    Assignee: Schweitzer-Mauduit International, Inc.
    Inventor: Vladimir Hampl, Jr.
  • Patent number: 5830318
    Abstract: The present invention is directed to a tipping paper adapted for wrapping a filter of a smoking article. The tipping paper contains a pigment made from calcium carbonate particles having a median size of between about 0.1 microns to about 0.5 microns. The calcium carbonate pigment can be used to create a tipping paper having an opacity of up to at least 89%. In comparison to conventional tipping papers, it has been surprisingly discovered that the tipping paper of the present invention reduces knife wear of a cutting instrument used to cut the paper and is less retentive to solvents when the paper is printed with a solvent based ink or covered with a solvent based coating.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: November 3, 1998
    Assignee: Schweitzer-Mauduit International, Inc.
    Inventors: Larry Snow, Kerry Mahone, Italo Baccoli
  • Patent number: 5820998
    Abstract: A process of making a coated paper comprises the following steps: 1) providing a paper layer composed of a blend of pulp fibers and particulate material containing polyvalent metal cations, 2) applying a acidified alginate solution of a material selected from salts and derivatives of alginic acid to cover at least a portion of the paper, 3) reacting the salts and/or derivatives of alginic acid with polyvalent metal cations in the paper to form a polymer coating, and 4) drying the paper and polymer coating. The permeability of the coated paper is generally at least about 75 percent less than the permeability of an identical uncoated portion of the paper. The solution of alginate material may be partially cross-linked. The alginate solution may be deposited utilizing gravure printing techniques. Also disclosed is a coated paper and a wrapper for a smoking article.
    Type: Grant
    Filed: March 8, 1994
    Date of Patent: October 13, 1998
    Assignee: Schweitzer-Mauduit International, Inc.
    Inventors: Raymond Dwayne Hotaling, Vladimir Hampl, Jr.
  • Patent number: 5730840
    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 characteristics of a paper wrapper are noticeably improved when a calcium carbonate filler having a median particle size of from about 0.15 microns to about 0.5 microns is incorporated into the paper. Paper wrappers made with the calcium carbonate particles of the present invention have superior ash characteristics in comparison to paper wrappers incorporating calcium carbonate particles of larger or smaller sizes. Further, the ash characteristics of the paper are improved without having to alter total filler levels in the paper.
    Type: Grant
    Filed: November 14, 1996
    Date of Patent: March 24, 1998
    Assignee: Schwietzer-Mauduit Inernational, Inc.
    Inventors: Vladimir Hampl, Jr., Larry D. Snow, Kerry A. Mahone, David P. Pozzetta
  • Patent number: 5722433
    Abstract: A water-dispersible sheet for cigarettes and a cigarette using the sheet are described. The sheet comprises a water-resolvable base paper and a water-dispersible coating layer containing water-soluble polymer formed on the surface of the base paper, whereby the sheet is adjusted to have an air-permeability of not more than 200 coresta measured with a paper permeability meter, or to have an air-resistance within the range of 0 to 50000 second/100 ml measured with an Oken type air-resistance tester. The water-resolvable base paper is made from fibrous raw materials containing not less than 20% by weight of water-dispersible fibers having fiber dimensions of a l/D value of 0.45 or lower and a L/D value of 60 or lower and a water-retention value of 95% or lower. The sheet is suitable for use as filter joining paper or filter plug wrap for cigarettes.
    Type: Grant
    Filed: July 30, 1996
    Date of Patent: March 3, 1998
    Assignees: Mishima Paper Co., Ltd., Japan Tobacco Inc.
    Inventors: Yoshiaki Ishino, Masato Shishikura, Toru Tsujimoto, Susumu Minamisawa
  • Patent number: 5534114
    Abstract: This invention relates to the treatment of paper with material in repetitive patterns. The treatment patterns made with this invention can be altered by changing apparatus operating parameters.
    Type: Grant
    Filed: March 6, 1992
    Date of Patent: July 9, 1996
    Assignee: Philip Morris Incorporated
    Inventors: Edwin L. Cutright, G. Robert Scott, Howard W. Vogt, Jr.
  • Patent number: 5527432
    Abstract: Provided are methods of dry recovering useable fiber from paper making sludge. In the methods, paper making sludge is dewatered and dried. The dewatered and dried sludge is then fiberized using a dry fiberizing machine into a fibrous material consisting of fibers and other material including fiber fines, clay, filler material and the like. The fibers in the fibrous material are then separated out in a sifting process. The separated fibers are then ready for use in paper making without further processing. The fiber fines and filler material separated from the fibers is also collected and can be used as filler material in other composite material applications.
    Type: Grant
    Filed: January 28, 1994
    Date of Patent: June 18, 1996
    Assignee: Advanced Fiber Technology, Inc.
    Inventors: Douglas A. Leuthold, Mark A. Leuthold
  • Patent number: 5386838
    Abstract: A high surface area oxidative catalyst smoke suppressive composition, smoke suppressive articles, and method of making such compositions and articles are disclosed. The smoke suppressive composition is a solid solution comprising a mixture of iron (Fe) and magnesium (Mg) that promotes efficient combustion, articles treated with such compositions, and methods for making such smoke suppressive compositions and articles. The smoke suppressive composition is made by co-precipitating Fe and Mg from an aqueous solution in the presence of a base. The iron-magnesium composition demonstrates high surface area and efficient combustion for embodiments having iron in an amount from approximately 3 mol % to approximately 30 mol % and magnesium in an amount from approximately 97 mol % to approximately 70 mol %. The compositions provide superior smoke suppression for items such as cigarettes and smoke suppressive articles.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: February 7, 1995
    Assignee: Kimberly-Clark Corporation
    Inventors: Roger B. Quincy, III, William F. Cartwright
  • Patent number: 5360516
    Abstract: This invention relates to the treatment of substrates with fluidized material in repetitive patterns during application cycles. The treatment patterns made with this invention can be altered by changing machine operating parameters. The patterns of fluidized material are applied to substrates using intermittent charges of compressed air. The intermittent charges of compressed air pass through a venturi slot which creates a region of low pressure in the charges adjacent to a region where the fluidized material accumulates between application cycles. This region of low pressure helps to entrain the fluidized material in the charge of compressed air. After the fluidized material is entrained in the charge of compressed air, the charge deposits the fluidized material on the substrate.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: November 1, 1994
    Assignee: Philip Morris Incorporated
    Inventors: Edwin L. Cutright, G. Robert Scott, Howard W. Vogt, Jr., Richard B. Reich
  • Patent number: 5342484
    Abstract: A method and apparatus for making banded smoking article wrappers is provided. The apparatus includes a cylindrical rotating applicator that has alternating regions of mesh material and regions of solid material on its outside surface. The applicator allows repetitive patterns of additional slurry to be applied to a continuous web of paper so that the basis weight of the paper is repetitively increased. Such paper, when incorporated into a smoking article, modifies the burn rate characteristics of the article.
    Type: Grant
    Filed: March 16, 1993
    Date of Patent: August 30, 1994
    Assignee: Philip Morris Incorporated
    Inventors: Edwin L. Cutright, G. Robert Scott, Howard W. Vogt
  • Patent number: 5332472
    Abstract: This invention relates to the treatment of substrates with fluidized material in repetitive patterns during application cycles. The treatment patterns made with this invention can be altered by changing machine operating parameters. The patterns of fluidized material are applied to substrates using an applicator drum. Machined in the outer surface of the applicator drum are a plurality of slots filled with deformable material. The deformable material extends to a position in each slot just short of the outside diameter of the applicator drum, leaving a cavity in each slot. These cavities are filled with slurry in a slurry applicator unit. A compression drum mounted within the hollow interior of the applicator drum uses compression tips to displace the deformable material in each slot in succession beyond the periphery of applicator drum at a position adjacent to the substrate, causing the slurry in the cavity to be applied to the substrate.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: July 26, 1994
    Assignee: Philip Morris Incorporated
    Inventors: Edwin L. Cutright, G. Robert Scott, Howard W. Vogt, Jr.
  • Patent number: 5284166
    Abstract: There is disclosed a method of coloring cigarette paper. Cigarette paper is made by forming a furnish, adding at least one colorant to the furnish, forming a sheet of paper from the thus treated furnish, and adding at least one colorant to the paper to produce a variety of tans/browns and red-brown cigarette wrapper.
    Type: Grant
    Filed: October 7, 1992
    Date of Patent: February 8, 1994
    Assignee: Kimberly-Clark Corporation
    Inventors: William F. Cartwright, Sean M. Kelly, David P. Pozzetta
  • Patent number: 5268077
    Abstract: The stock stream of a pre-cleaned paper stock suspension is sub-divided into extremely small partial jets in a chamber of a compartment. Each such partial jet or stream has a throughflow volume of approximately 50 liters/min. to 80 liters/min. and is directed with great turbulence against an impact wall within the closed chamber of the compartment at jet velocities in the order of about 10 m/sec. to 12 m/sec. and at an absolute pressure of about 0.5 to 0.8 bar absolute, the partial jets then being completely sprayed at such impact wall. The paper stock suspension which is to be deaerated has as large as possible surface area, so that the air is efficiently released at a negative pressure or vacuum of approximately 0.05 bar prevailing in the chamber and then can be suctionally removed. The division of the stream of the paper stock suspension into partial jets is accomplished by a distributor through which extends a predetermined number of throughflow openings defined by bores.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: December 7, 1993
    Assignee: Sulzer Esher Wyss GmbH
    Inventors: Alfred Bubik, Anton Gmeiner, Walter Stein
  • Patent number: 5263500
    Abstract: A paper wrapper for a cigarette is prepared using fine particle size calcium carbonate as the mineral filler for the purpose of burn rate, puff count and tar delivery control.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: November 23, 1993
    Assignee: Philip Morris Incorporated
    Inventors: Sheryl D. Baldwin, Rowland W. Dwyer, Deborah J. Newman, Barton Floyd, Robert M. Rogers, Edward B. Sanders, Barbro L. Goodman
  • Patent number: 5253660
    Abstract: A cigarette or cigar wrapper is disclosed wherein the paper filler consists of two homogeneously intermixed minerals, viz huntite and hydromagnesite, alone, or admixed with calcium carbonate or magnesium hydroxide or calcium carbonate and magnesium hydroxide and carbon.
    Type: Grant
    Filed: April 24, 1992
    Date of Patent: October 19, 1993
    Assignee: P. H. Glatfelter Company
    Inventors: Ajit S. Dixit, William F. Owens, Jr.
  • Patent number: 5247950
    Abstract: Treating cigarette paper with (1) binary combinations of the sodium and potassium salts of a carboxylic acid or (2) binary combinations of an alkali metal chloride and an alkali metal carboxylate provides a means of controlling the static burning rate of cigarettes wrapped in these papers. Burn rate control is functionally implemented by varying (1) the sodium to potassium cation ratio at constant total alkali metal cation weight for the former binary combination and (2) the ratio of the alkali metal cation from the chloride to the alkali metal cation from the carboxylate at constant total alkali metal cation weight for the latter binary combination. This means of burn rate control is effective for cigarette papers containing various inorganic fillers and weighing less then 25 g/m.sup.2 to over 45 g/m.sup.2.
    Type: Grant
    Filed: July 2, 1991
    Date of Patent: September 28, 1993
    Assignee: P. H. Glatfelter Company
    Inventors: Richard H. Martin, William F. Owens, Jr., Gary W. Wise
  • Patent number: 5228463
    Abstract: The invention relates to the use of co-crystalline magnesite/magnesium hydroxide compositions as fillers for smoking article wrappers. Smoking articles made with wrappers containing these compositions exhibit significantly reduced sidestream smoke and does not compromise subjective attributes.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: July 20, 1993
    Assignee: Philip Morris Inc.
    Inventors: Jay A. Fournier, Andrew G. Kallianos, John B. Paine, III, Kenneth F. Podraza, Jeffrey I. Seeman
  • Patent number: 5170807
    Abstract: There is disclosed a method of producing a non-burning wrapper for use with smoking products. A non-burning wrapper is formed by treating a base paper with a solution consisting essentially of water, calcium chloride and a reactive size for paper; drying the thus treated paper; coating one side of the thus treated base paper with a solution consisting essentially of water, calcium carbonate, potassium silicate and sodium carboxymethycellulose; and drying the thus treated and coated paper to form a non-burning wrapper for use with smoking products.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: December 15, 1992
    Assignee: Kimberly Clark Corporation
    Inventors: Loyd G. Kasbo, Peter E. Brighenti, William F. Cartwright, Carmen P. DiGrigoli, Benji D. Morgan
  • Patent number: 5152304
    Abstract: The sidestream smoke associated with a cigarette or cigarette-like smoking article is reduced by wrapping the tobacco in a paper wrapper having a burn modifier, such as an acidic salt, added thereto. Preferably the paper wrapper has a high basis weight and low porosity.
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: October 6, 1992
    Assignee: Philip Morris Incorporated
    Inventors: Gordon H. Bokelman, Sheryl D. Baldwin, Susan S. Tafur, Robert N. Ferguson, Barbro L. Goodman, Robert M. Rogers
  • Patent number: 5144967
    Abstract: A flavor release material and method for producing the same where the material contains a calculated amount of active surface agent and flavorant adsorbed onto the active surface agent. The flavor release material is capable of controllably releasing flavor and aroma when exposed to a predetermined elevated temperature.
    Type: Grant
    Filed: October 22, 1990
    Date of Patent: September 8, 1992
    Assignee: Kimberly-Clark Corporation
    Inventors: William F. Cartwright, Carmen P. DiGrigoli, Loyd G. Kasbo
  • Patent number: 5143098
    Abstract: The sidestream smoke associated with a cigarette or cigarette-like smoking article is reduced by wrapping the tobacco in a single sheet of paper having multiple layers.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: September 1, 1992
    Assignee: Philip Morris Incorporated
    Inventors: Robert M. Rogers, Gordon H. Bokelman, Sheryl D. Baldwin, Susan S. Tafur
  • Patent number: 5125421
    Abstract: An improved tobacco filter or plug wrap is made by calendering ultraporous paper. The calendering process reduces surface irregularities, reduces the thickness of the paper, and reduces the porosity. In general, during the calendering step, the ultraporous paper should be reduced in thickness from about 0.1 mils. to about 2.5 mils.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: June 30, 1992
    Assignee: P. H. Glatfelter Company
    Inventor: Melvin G. Mitchell
  • Patent number: 5109876
    Abstract: Cigarettes have a tobacco rod including smokable material circumscribed by a paper wrapper. The paper wrapper includes a cellulosic base web (e.g., flax and/or wood pulp fibers) and particles of at least one inorganic filler material. The inorganic filler material includes particles of agglomerated calcium carbonate particles.
    Type: Grant
    Filed: April 19, 1990
    Date of Patent: May 5, 1992
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Rhonda F. Hayden, Elbert C. Jones, Jr.
  • Patent number: 5101840
    Abstract: A dye coating for a cigarette wrapper paper and a cigarette utilizing said wrapper wherein the dye comprises a solvent system, cocoa powder as the pigment, a dispersant to disperse the pigment, and a binder to bond the pigment to the paper when the dye is dry.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: April 7, 1992
    Assignee: Brown & Williamson Tobacco Corporation
    Inventor: Tilford F. Riehl, Jr.
  • Patent number: 5092306
    Abstract: An improved smoking article wrapper which significantly reduces sidestream smike using magnesium carbonate in the form of magnesite as a filler. Smoking articles which employ the wrappers exhibit a significant reduction in sidestream smoke without adverse effect on subjective characteristics.
    Type: Grant
    Filed: October 19, 1990
    Date of Patent: March 3, 1992
    Assignee: Philip Morris Incorporated
    Inventors: Gordon H. Bokelman, Jay A. Fournier, Andrew G. Kallianos, John B. Paine, III, Kenneth F. Podraza, Jeffrey I. Seeman
  • Patent number: 5043488
    Abstract: A process for preparing an explosive comprising contacting a ketone with a compound capable of producing a product, or compound, containing nitro groups for a time sufficient to obtain a product having a high-energy content and the product resulting therefrom.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: August 27, 1991
    Assignee: J. G. S. Research Company, Inc.
    Inventors: Johann G. Schulz, Engelina Porowski