Classifications

• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D1/00—Cigars; Cigarettes
  • A24D1/02—Cigars; Cigarettes with special covers
  • A24D1/027—Cigars; Cigarettes with special covers with ventilating means, e.g. perforations
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D1/00—Cigars; Cigarettes
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D1/00—Cigars; Cigarettes
  • A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips

Definitions

• the present invention relates to a smoking article comprising a space between a smoking material rod and a filtering element so as to form a chamber that is peripherally sealed by a wrapper that unites the smoking material rod to the filtering element, said wrapper having at least one ventilation opening.
• variable characteristics may result in flavor alterations. These variable characteristics arise because the ventilation may vary in accordance with the conditions in which the cigarette is being smoked.
• Documents PI8303783 and PI9001386 disclose cigarettes that possess a chamber located between two filters. Additionally, said documents disclose at least one ventilation opening in the wrapper that unites the tobacco rod to each filtering element in order to ventilate the chamber. In contrast with the objective of the present invention, said documents seek to optimize the smoke characteristics by means of better filtering of the same, without considering the standard deviation of the cigarette ventilation that could influence the smoke characteristics.
• Document PI9401850-2 discloses a coaxial cigarette that provides a chamber between a coaxial tobacco rod and a filter to mix the smokes of the two types of tobacco present in the tobacco rod.
• the volume of said chamber is also adjustable in order to enable the change in smoke flavor perceived by the smoker.
• the chamber is designed to only mix the two types of smoke. In this document, there is also no consideration regarding the effect of the standard deviation of the cigarette ventilation.
• No state of the art document reveals a ventilated smoking article consisting of a chamber located between a tobacco rod and a filter designed to homogenize the smoke in order to maintain the product flavor characteristics and simultaneously increase the diffusion of the smoke vapor phase.
• the invention provides a smoking article comprising a smoking material rod, at least one filtering element and a wrapper, wherein: said wrapper connects the at least one filtering element and the smoking material rod; the smoking material rod and the at least one filtering element are spaced apart and this space is enclosed by the wrapper to form a chamber; and the wrapper comprises at least one ventilation opening.
• the invention provides a method for manufacturing a smoking article as described herein, comprising the steps of: providing a smoking material rod and at least one filtering element in a spaced apart relationship to form a space between the smoking material rod and the filter element; and connecting the smoking material rod to the at least one filtering element by means of a wrapper comprising at least one ventilation opening wherein the wrapper encloses the space between the smoking material rod and the at least one filtering element to form a chamber.
• the present invention provides a smoking article comprising a tobacco rod, at least one filtering element and a wrapper, being that said wrapper fastened to the at least one filtering element and the tobacco rod in order to allow the coupling of the two, the wrapper having at least one ventilation opening, wherein the smoking article comprises a chamber that is formed in the space between the tobacco rod and the filtering element, and is enclosed by the wrapper.
• the smoking article described herein may consist of a tobacco rod, at least one filtering element and a wrapper.
• the present invention provides a manufacturing method for a smoking article, comprising the steps of formation of a tobacco rod and formation of a filtering element, wherein the method additionally comprises the steps of formation of a space between the tobacco rod and the filtering element and the coupling of the tobacco rod to the filtering element by fastening a wrapper over both, thus forming a chamber in the space between the tobacco rod and the filtering element.
• the at least one ventilation opening is located over the chamber.
• the wrapper comprises a plurality of ventilation openings.
• the plurality of openings are circumferentially positioned on the wrapper.
• the plurality of openings are positioned in a line on the wrapper.
• the plurality of openings are located over the middle of the chamber.
• the plurality of openings are a ventilation perforation line on the wrapper.
• the spacing between the smoking material rod and the filtering element is between 2 to 5 mm.
• the spacing between the smoking material rod and the filtering element is between 2 to 3 mm.
• the spacing between the smoking material rod and the filtering element is from 1.1 to 5.0 mm.
• the spacing is from 1.2 to 3.5 mm.
• the spacing is from 1.3 to 2.7.
• the spacing is from 1.5 to 2.5.
• the smoking material rod is a tobacco rod.
• a tobacco rod is a smoking material rod that comprises tobacco.
• the extremity of the tobacco rod adjacent to the chamber comprises tobacco that is fastened to a tobacco rod liner.
• a tobacco rod liner is a wrapper that enwraps the tobacco rod.
• the tobacco is fastened to the tobacco rod liner by means of an adhesive or by adjusting the quantity of tobacco on the tobacco rod extremities.
• spacing guides are installed in a closing drum of a filter coupling machine to form the space between the smoking material rod and the at least one filtering element.
• the method further comprises the step of fastening tobacco located at the tobacco rod extremity adjacent to the chamber to a tobacco rod liner.
• the smoking article has a CO/TAR reduction of at least 5% as compared to an equivalent smoking article that does not comprise a chamber.
• the smoking article has a CO/TAR reduction of at least 6%.
• the smoking article has a CO/TAR reduction of at least 7%.
• the smoking article has a ventilation standard deviation of less than 2.00.
• the smoking article has a ventilation standard deviation of less than 1.95.
• the smoking article has a ventilation standard deviation of less than 1.57.
• the smoking article has a ventilation standard deviation of less than 1.0.
• the smoking article has a ventilation standard deviation of less than 0.74.
• Figure 1 represents an example of a conventional cigarette, without an air chamber.
• Figure 2 represents a preferred embodiment of the present invention in which the ventilation is located over the air chamber.
• FIG. 3 represents another preferential embodiment of the present invention in which the ventilation is located over the air chamber.
• Figure 4 represents a drawing of a machine on which the method of manufacturing of the smoking article object of the present invention is performed.
• a suitable smoking article 1 which comprises a tobacco rod 2, at least one filtering element 3 and a wrapper 4, may have said wrapper fastened over the at least one filtering element and the tobacco rod so as to connect the same, the wrapper having at least one ventilation opening 5 (see figure 2).
• the smoking article comprises a chamber 6 that is formed in the space located between the tobacco rod 2 and the filtering element 3, and is enclosed by the wrapper 4.
• the space measures between 2 and 5 mm, for example, between 2 and 3 mm (figure 2).
• the at least one ventilation opening 5 may be located over the chamber 6. However, acceptable results may also be obtained when the ventilation opening(s) is (are) located over the filtering element (figure 3).
• part of the tobacco may be fastened on the liner 9 of the tobacco rod. Normally, this fixation is performed by means of an adhesive or by adjusting the quantity of tobacco on the extremities of the tobacco rod.
• the smoking article may be manufactured by means of a manufacturing technique that comprises the steps of formation of a tobacco rod 2, formation of at least one filtering element 3 and the formation of at least one ventilation opening 5 in the wrapper 4; followed by the formation of a space between the tobacco rod 2 and the at least one filtering element 3; and connecting the tobacco rod 2 to the at least one filtering element 3 by means of fastening of a wrapper 4 over the same, such that a chamber 6 is formed by the space located between the tobacco rod and the at least one filtering element.
• suitable tobacco rods 2, at least one filtering element 3, and wrapper 4 with at least one ventilation opening 5 may be obtained commercially.
• the method may be carried out without the steps of forming such materials.
• the method may additionally comprise the step of fastening on the tobacco rod liner 9 the tobacco present on the extremity 8 of the tobacco rod 2 adjacent to the chamber 6.
• This fixation is preferably made by means of an adhesive or by means of the adjustment of the quantity of tobaccos located at the extremities of the tobacco rod.
• the method of the present invention can be implemented on state of the art filter coupling machines, such as model MAX 100 manufactured by the Hauni Hamburg Company.
• the spacing between the tobacco rod 2 and the at least one filtering element 3 may be obtained by the installation of spacing guides 11 on a double closing drum 12 of a filter coupling machine 10 (figure 4).
• TIP ventilation is the percentage measurement of the quantity of air that passes through the filter, promoting the dilution of the smoke resulting from the burning of the tobacco rod.
• the secondary benefit of the present invention is the reduction of the concentration of carbon monoxide in the main smoke.
• Table 1 below presents the experimental results observed in laboratory tests of the reduction in the ventilation standard deviation and of the reduction of carbon monoxide content obtained with the use of smoking articles of the present invention compared to commercial products with both high and low ventilation levels.
• mouth end represents the distance between the extremity of the filter closest to the smoker's mouth and the ventilation perforation line.
• TAR is the term used to describe the total substances present in the smoke excluding water and nicotine. Inhalations represent the number of times the cigarette is smoked by the smoking machine.
• the measurement of the ventilation consists in the application of a vacuum to the cigarette extremity containing the filter, generating an airflow of 17.5 mUs through the cigarette (tobacco rod + ventilation).
• the airflow that passes through the cigarette tip and the tobacco rod are measured using a low-pressure transducer and these individual measurements of the cigarette are performed by adequately isolating the areas with coils lined with a latex glove.
• the result of ventilation is expressed as the total % of air that passes through the tobacco rod and the ventilation.
• Alternatives 135305 and 135304 provide the ventilation openings positioned over the filtering element and alternatives 135302 and 135303 provide the ventilation openings over the space between the filtering element and the tobacco rod. As can be seen, the lowest ventilation standard deviation and variation coefficient was obtained for alternatives 135302 and 135303. However, all the alternatives cigarettes of the present invention provided a reduction of CO/TAR.

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• Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=39230602

Family Applications (1)

Country Status (17)

Families Citing this family (5)

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• 2006
  • 2006-09-25 BR BRPI0603954-5A patent/BRPI0603954B1/pt active IP Right Grant
• 2007
  • 2007-09-20 EP EP07848975A patent/EP2076143A2/en not_active Withdrawn
  • 2007-09-20 AU AU2007301616A patent/AU2007301616A1/en not_active Abandoned
  • 2007-09-20 RU RU2009115440/13A patent/RU2445906C2/ru not_active IP Right Cessation
  • 2007-09-20 CA CA002660491A patent/CA2660491A1/en not_active Abandoned
  • 2007-09-20 US US12/442,676 patent/US20110030705A1/en not_active Abandoned
  • 2007-09-20 JP JP2009528810A patent/JP2010504091A/ja not_active Ceased
  • 2007-09-20 KR KR1020097007153A patent/KR20090071585A/ko not_active Ceased
  • 2007-09-20 UA UAA200903500A patent/UA96955C2/ru unknown
  • 2007-09-20 MY MYPI20091148 patent/MY152860A/en unknown
  • 2007-09-20 CN CNA2007800352757A patent/CN101516217A/zh active Pending
  • 2007-09-20 WO PCT/IB2007/003733 patent/WO2008038145A2/en not_active Ceased
  • 2007-09-20 MX MX2009001805A patent/MX2009001805A/es active IP Right Grant
  • 2007-09-24 CL CL200702748A patent/CL2007002748A1/es unknown
  • 2007-09-24 AR ARP070104207A patent/AR062959A1/es not_active Application Discontinuation
• 2009
  • 2009-02-17 HN HN2009000363A patent/HN2009000363A/es unknown
  • 2009-02-19 ZA ZA200901204A patent/ZA200901204B/xx unknown

Non-Patent Citations (1)

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