EP2540173A1 - Rauchartikel - Google Patents

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Publication number
EP2540173A1
EP2540173A1 EP12185844A EP12185844A EP2540173A1 EP 2540173 A1 EP2540173 A1 EP 2540173A1 EP 12185844 A EP12185844 A EP 12185844A EP 12185844 A EP12185844 A EP 12185844A EP 2540173 A1 EP2540173 A1 EP 2540173A1
Authority
EP
European Patent Office
Prior art keywords
sheet material
rod
smoking article
diluent
article according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12185844A
Other languages
English (en)
French (fr)
Inventor
Dominic Woodcock
Edward John
Martin Coleman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British American Tobacco Investments Ltd
Original Assignee
British American Tobacco Investments Ltd
British American Tobacco Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by British American Tobacco Investments Ltd, British American Tobacco Co Ltd filed Critical British American Tobacco Investments Ltd
Publication of EP2540173A1 publication Critical patent/EP2540173A1/de
Withdrawn legal-status Critical Current

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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
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form

Definitions

  • the present invention relates to a smoking article including a wrapped rod of smoking material.
  • Some smoking articles comprise a rod of smoking material having an outer wrapper and a sheet or wrap disposed between the rod of smoking material and the outer wrapper.
  • WO 2005/082180 discloses smoking articles comprising a rod of smoking material with a wrapper about the rod and a web of material comprising an adsorbent material and a flavourant, the web material being positioned between the rod of smoking material and the wrapper.
  • WO 2006/023281 and WO 2006/014995 disclose cigarettes comprising a tobacco column surrounded by an outer wrap paper, and a partial inner wrap extending longitudinally of the tobacco column.
  • the inner wrap material may contain a humectant.
  • US 6,997,190 discloses smoking articles comprising a rod of smoking material wrapped in a wrapping material.
  • the wrapping material comprises a base sheet having a major surface and a plurality of bands applied to that major surface in the form of a pattern, each band possessing at least two web material layers with at least one of the web material layers incorporating a flavourant.
  • the wrapping material may have a coating applied thereto which coating may contain a humectant, for example 1-5% humectant by weight of the coating composition.
  • US 2003/0178039 discloses cigarettes comprising a smokable material wrapped in a circumscribing wrapping material to form a smokable rod.
  • the circumscribing wrapping material may comprise a humectant up to 10% by weight.
  • adsorbent in such wrapping material.
  • US 6,257,243 discloses cigarettes which comprise a rod having an inner segment of smokable material, a covering for the inner segment, an outer segment of smokable material and a covering for the outer segment.
  • adsorbent in the coverings.
  • a smoking article comprises:
  • the at least one diluent is preferably present in the first sheet material in an amount of from about 5 to 80% by weight of the sheet material, preferably from about 5 to 70%, more preferably from about 10 to 60%, more preferably from about 20 to 50%.
  • the diluent is at least one aerosol forming agent selected from the group consisting of: polyhydric alcohols, glycerol, propylene glycol, triethylene glycol, esters, triethyl citrate, triacetin, high boiling point hydrocarbons, non-polyols, glycols, sorbitol, and lactic acid. Triacetin is particularly preferred.
  • said first sheet material further comprises at least one diluent stabilising means and/or at least one adsorbent.
  • Said diluent stabilising means or adsorbent is preferably an integral component within the first sheet material.
  • said diluent stabilising means or adsorbent is selected from the group consisting of zeolite, sepiolite, clay, silica gel, activated alumina, minerals, resin, and carbon, and particularly preferably the adsorbent is activated carbon.
  • the activated carbon may preferably be in granular, powder or particulate form and have a mean particle size of less than 250 ⁇ m, preferably less than 100 ⁇ m, preferably less than 50 ⁇ m, preferably less than 20 ⁇ m.
  • the activated carbon may have any level of activity and generally a higher activity carbon is beneficial.
  • the activated carbon has an activity level of 30-180% carbon tetrachloride, and more preferably 60-120%.
  • the adsorbent or diluent stabilising means has a loading level less than 80% by weight of the first sheet material, preferably less than 50%, more preferably between about 10 to 45%.
  • the smoking article may have a number of configurations.
  • the first sheet material extends over the entire length of the rod of smokeable material and is wrapped around the outside of the rod of smokeable material.
  • the first sheet material contains the diluent and acts as a wrapper providing support for the rod of smokeable material.
  • the smoking article further comprises a second sheet material which preferably does not contain diluent, wherein said second sheet material is wrapped around the entire length of the rod of smokeable material.
  • the second sheet material acts as a wrapper for the smoking article, providing support for the rod of smokeable material.
  • the first sheet material may also extend over the entire length of the rod of smokeable material, or may extend only over a portion or a plurality of discrete portions of the length of the rod of smokeable material as the second sheet material is present as a wrapper to provide the mechanical support for the rod of smokeable material.
  • the use and positioning of smaller portions will provide flexibility of cigarette design by impacting on wrapper diffusivity, tar propensity and diluent release.
  • the second sheet material is preferably located outside said first sheet material relative to the axis of the rod of smokeable material.
  • the first sheet material is positioned directly between said rod of smokeable material and said second sheet material.
  • the first sheet material is located inside the rod of smokeable material, such that smokeable material is positioned between the first sheet material and the second sheet material which acts as an outer wrapper, in a co-axial arrangement.
  • the first sheet material may be rolled (in a "Swiss-roll" type arrangement or twisted spill arrangement in which a rolled/twisted spill of paper is provided in the centre of the rod) and located within the rod of smokeable material co-axially with the second sheet material.
  • At least one of said first and second sheet materials has a thickness of from 20 to 300 ⁇ m.
  • a smoking article including a rod of smoking material and a first sheet material comprising diluent(s) and optional adsorbent(s) and/or diluent stabilising means
  • the ratio of smoke components arising from the smoking material to total tar yield is reduced by dilution through eluted diluent.
  • levels of smoke components arising from the smoking material may be reduced by the presence of the first smoking material.
  • the first sheet material may additionally act as a wrapper, enwrapping the entire length of the rod of smoking material so that no additional wrapper is required.
  • a second sheet material may additionally be provided. If a second sheet material forms a wrapper outside the first sheet material, applicant has found that the presence of diluent(s) in the first sheet material does not lead to unsightly spotting of the second sheet material.
  • the second sheet material may be a wrapper material comprising a web or cast material known to those skilled in the art, for example cellulosic paper web or reconstituted tobacco sheet material. It may incorporate a coating, treatment, or chemical modification such as those intended to reduce sidestream smoke or lower ignition propensity.
  • the second sheet material may be with or without fillers that may or may not be adsorbents and/or diluent stabilising means.
  • wrapper materials are continuous about the outer circumference of a smoking material rod.
  • the ends of the rod are not provided with wrapper material; however, such a configuration would still fall within the scope of the present invention.
  • the second sheet material may have a thickness from 5 to 500 ⁇ m, for example 10 to 300 ⁇ m or 20 to 60 ⁇ m.
  • the first sheet material may be any web material known to those skilled in the art, for example cellulosic paper web or reconstituted tobacco sheet materials. It may incorporate a coating, treatment, or chemical modification.
  • the first sheet material may be provided with fillers. It may include adsorbents and/or diluent stabilising means.
  • the first sheet material may be coextensive with the second sheet material, or it may only be provided at one or more discrete portions of the length of the smoking material rod.
  • the first sheet material may be located between the second sheet material and the smokeable material, which could be referred to as 'inside' the second sheet material, or it may be provided on the surface of the second sheet material opposite the smokable material, or 'outside' the second sheet material.
  • the first sheet material forms a single patch which extends over only a part of the inner surface of the second sheet material, around the whole of the circumference.
  • patches may be in any form.
  • patches may be in the form of a plurality of bands which are spaced in the longitudinal direction of the smoking material rod.
  • patches may be in the form of circumferentially spaced strips which extend along the whole or a part of the length of the smoking material rod.
  • the patches may be a combination of such bands and strips. Said combination of bands and strips may be located on the inner, outer or both surfaces of the second sheet material.
  • each of the sheet materials may be the same or different in composition from any of the other sheet materials.
  • the first sheet material may have a thickness from 5 to 500 ⁇ m, for example 10 to 300 ⁇ m or 20 to 60 ⁇ m. However, materials having a greater thickness may be used in some configurations, for example longitudinally extending strips.
  • the first sheet material comprises one or more diluents.
  • diluents allow the production of a smoking article which, upon smoking, generates an aerosol comprising smokable material-derived smoke, e.g. tobacco smoke, and one or more eluted diluents.
  • Suitable diluents for use in the first sheet material include aerosol forming means utilising a wide range of classes of substances known to those skilled in the art.
  • polyhydric alcohols such as glycerol, propylene glycol, sorbitol and triethylene glycol
  • esters such as diacetin, triethyl citrate, isopropyl myristate or triacetin, high boiling point hydrocarbons, or lactic acid.
  • a combination of diluents may be used, in equal or differing proportions.
  • the diluent is triacetin, triethyl citrate or isopropyl myristate.
  • diluent(s), and, where present, adsorbent material and/or diluent stabilising means may be provided in any suitable form.
  • suitable form examples include liquids and solids, such as in granular, powder, crystalline or other particulate forms, e.g. nanoparticles, molecular cage structures, clathrates.
  • the one or more adsorbent material and/or diluent stabilising means may be selected from any suitable material as known to skilled workers. Examples include zeolite, sepiolite, clay, activated alumina, minerals, resins, silica gel and carbon.
  • the adsorbent material and/or diluent stabilising means is carbon, such as activated carbon. Where activated carbon is used, the activation level can be measured by evaluating the percent carbon tetrachloride (CTC) as is known in the art. Briefly, carbon is weighed, exposed to CTC and then the weight of the carbon remeasured. The increase in weight of the carbon is calculated as a percentage.
  • CTC percent carbon tetrachloride
  • the activated carbon will preferably have a high activity and may have an activity of up to 180% CTC. More preferably the carbon has an activity of 40-160% CTC.
  • the adsorbent(s) or diluent stabilising means present in the first sheet material layer may be the same or different in each of such web material layers.
  • the adsorbent(s) and/or diluent stabilising means or combinations of adsorbent(s) and/or diluent stabilising means may be the same or different in each web material layer, strip, or band.
  • a first sheet material comprising one or more adsorbent material and/or diluent stabilising means may be in the form of a paper containing activated carbon.
  • the rod of smokeable material comprises a central core of smokable material, fully wrapped along its length, with an annular rod of smoking material enwrapping the central core.
  • the central core may be wrapped in the first sheet material along its entire length, or may be wrapped in a third sheet material having portions of first sheet material supported by the third sheet material, either inside or outside the first sheet material.
  • the third sheet material used to wrap the central core may be the same or different from that of the second sheet material which enwraps the annular rod of smoking material.
  • the smoking article may further include portions of first sheet material which may be bands, strips or a combination thereof located on the inner, outer or both surfaces of the second sheet material enwrapping the annular rod of smoking material.
  • the smokeable material can be any smokeable material as is considered appropriate in the art.
  • it may be a tobacco-containing smoking material, a modified tobacco smoking material, e.g. expanded tobacco, extracted tobacco, physically, chemically and/or biochemically modified tobacco or a non-tobacco-containing smoking material.
  • the smoking material is a tobacco-containing material in combination with non-tobacco smoking material, or comprised solely of a tobacco material.
  • the tobacco material comprises one or more of stem, lamina and tobacco dust.
  • a tobacco material is one containing one or more of the following tobacco types: Virginia or flue-cured tobacco, Burley tobacco, Oriental tobacco, reconstituted tobacco, stem and modified tobacco.
  • the smoking material comprises a blend of tobacco material or a blend of tobacco material and non-tobacco material.
  • a central core may contain a different smokable material from that in the annular rod.
  • the smoking article may additionally comprise a filter element located at one end of the smoking material rod.
  • a filter element may, for example, comprise an adsorbent material.
  • the filter element may be a multiple filter comprising multiple sections such as, for example, a dual or triple filter. Suitable filters are well known to those skilled in the art. Such filters known in the art include Dalmatian filters in which a particulate adsorbent material is interspersed in fibrous filter material, for example fibrous cellulosic material, and cavity filters in which a cavity portion of the multi-segment filter contains adsorbent material.
  • the smoking article according to the present invention can be readily prepared by techniques known in the art.
  • Figures 1-8 show enlarged cross-sectional side views of smoking articles of the present invention.
  • Like materials or structures are represented by the same reference numeral in the various figures.
  • Figure 1 shows a smoking article 10 comprising a rod of smokeable material 11 encased in a first sheet material 13 and a wrapper comprising a second sheet material 12.
  • the second sheet material 12 extends approximately over the entire circumferential surface of rod of smokeable material 11.
  • the first sheet material 13 is located along approximately the entire inner surface of the second sheet material 12, separating second sheet material 12 from rod of smokable material 11.
  • the second sheet material 12 may be omitted, so that the first sheet material 12 extends along the entire length of the rod of smokeable material 11 and acts both as a wrapper and a diluent containing medium.
  • the Figure 1 smoking article has a general cigarette form, meaning a filter rod 14 is provided.
  • Filter rod 14 is enwrapped in plug wrap 15 and the wrapped filter rod is joined to the wrapped smokable material rod with tipping paper 16.
  • the component materials and preparation of filter rod 14, plug wrap 15, and tipping paper 16, are conventional as is well known in the art.
  • Figure 2 shows a smoking article 10 having a first sheet material 13 located between a second sheet material 12 and a rod of smokeable material 11.
  • the first sheet material 13 is in the form of a patch covering a portion of the circumferential and longitudinal length of rod of smokeable material 11.
  • first sheet material 13 is provided as a plurality of patches, some at the filter rod 14 end of the rod of smokeable material 11, some opposite the filter rod 14 end.
  • the schematic of Figure 4 shows a smoking article 10 having a first sheet material 13 located outside the second sheet material 12. That is, the second sheet material 12 is positioned between a rod of smokeable material 11 and the first sheet material 13. In this embodiment, the first sheet material 13 covers approximately the entire outer surface of wrapper 12.
  • Figure 5 shows an embodiment having a circumferential filter end patch of first sheet material 13 positioned outside the second sheet material 12.
  • FIGS 6 to 8 represent smoking articles 10 having a co-axial core of smokeable material 17 positioned within the rod of smokeable material 11.
  • the core of smokeable material 17 is wrapped in first sheet material 13 which extends along the entire length of the rod of smokeable material 11.
  • a smoking article has the configuration shown in Figure 6 , with a co-axial core of smokeable material 17 positioned within the rod of smokeable material 11, but in this embodiment both the inner wrapper and the outer wrapper are formed from diluent containing first sheet material.
  • the core of smokeable material 17 is wrapped in a third sheet material which may be the same as the second sheet material 12.
  • Patches of first sheet material 13 are provided both around the outer circumference of the third sheet material positioned about core of smokeable material 17 and between rod of smokeable material 11 and the second sheet material 12 around the outer circumference of rod of smokeable material 11.
  • Figures 9-11 show enlarged views from the non-filter end of a smoking article.
  • Figure 9 shows the embodiment of Figure 1
  • Figure 10 shows the embodiment of Figure 3
  • Figure 11 shows the embodiment of Figure 7 .
  • Figure 12 shows an exploded perspective view of a smoking article 10 having a rod of smokeable material 11 and a filter rod 14, the rod of smokeable material 11 being provided with a patch of first sheet material 13 at the filter rod 14 end, as well as second sheet material 12 provided outside the entire length of rod of smokeable material 11. Plug wrap 15 and tipping paper 16 are provided.
  • Cigarettes were manufactured having a 56mm tobacco rod and a 27mm cellulose acetate filter with a circumference of 24.6mm. The cigarettes had no tip ventilation. Specifications for the second sheet material wrapping the tobacco rod was paper comprising of mixed fibres and having 50CU permeability and 2% potassium citrate (burn additive).
  • the tobacco rod comprised a blend of flue cured Virginia and burley lamina tobacco.
  • a layer of first sheet material containing activated carbon was provided around the full length and circumference of the tobacco rod.
  • a wrapper of second sheet material was provided around the full length and circumference of the tobacco rod.
  • Figure 1 A schematic showing a similar cigarette design is shown in Figure 1 .
  • the carbon-containing first sheet material included 39% fibre and 36% activated carbon.
  • the activated carbon had a carbon tetrachloride (CTC) activity of 100%.
  • test levels included papers impregnated with 10, 19, or 28mg/cigarette of triacetin.
  • Cigarettes were manufactured which had a 56mm tobacco rod and a 27mm cellulose acetate filter with a circumference of 24.6mm. Specifications for the second sheet material wrapping the tobacco rod was paper comprising mixed fibres and having 50CU permeability and 2% potassium citrate (burn additive). The tobacco rod comprised a blend of flue cured Virginia and burley lamina tobacco.
  • a 56mm long tobacco rod having a 16mm circumference was wrapped with a carbon containing first sheet material and located longitudinally within the centre of the cigarette tobacco rod.
  • the carbon containing first sheet material included 39% fibre and 36% activated carbon.
  • the activated carbon had a carbon tetrachloride (CTC) activity of 100%.
  • test cigarette design included impregnation of 16 mg triacetin in the carbon containing first sheet material.
  • a control level was manufactured which was identical but for non-impregnated carbon containing sheet.
  • a schematic showing a similar cigarette design is shown in Figure 6 .
EP12185844A 2008-10-14 2009-09-21 Rauchartikel Withdrawn EP2540173A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0818810.4A GB0818810D0 (en) 2008-10-14 2008-10-14 Smoking article
EP09736576A EP2364101B1 (de) 2008-10-14 2009-09-21 Rauchartikel

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP09736576.1 Division 2009-09-21

Publications (1)

Publication Number Publication Date
EP2540173A1 true EP2540173A1 (de) 2013-01-02

Family

ID=40083995

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09736576A Not-in-force EP2364101B1 (de) 2008-10-14 2009-09-21 Rauchartikel
EP12185844A Withdrawn EP2540173A1 (de) 2008-10-14 2009-09-21 Rauchartikel

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09736576A Not-in-force EP2364101B1 (de) 2008-10-14 2009-09-21 Rauchartikel

Country Status (20)

Country Link
US (1) US20110259352A1 (de)
EP (2) EP2364101B1 (de)
JP (1) JP2012504972A (de)
KR (1) KR20110063585A (de)
CN (2) CN103393216A (de)
AR (1) AR076440A1 (de)
AU (1) AU2009304131B2 (de)
BR (1) BRPI0920278A2 (de)
CA (1) CA2740202A1 (de)
CL (1) CL2011000794A1 (de)
ES (1) ES2397685T3 (de)
GB (1) GB0818810D0 (de)
MX (1) MX2011003656A (de)
NZ (2) NZ604254A (de)
PH (1) PH12013500731A1 (de)
PL (1) PL2364101T3 (de)
RU (1) RU2011119218A (de)
UA (1) UA100599C2 (de)
WO (1) WO2010043475A1 (de)
ZA (1) ZA201102529B (de)

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US10034988B2 (en) 2012-11-28 2018-07-31 Fontem Holdings I B.V. Methods and devices for compound delivery
US10194693B2 (en) 2013-09-20 2019-02-05 Fontem Holdings 1 B.V. Aerosol generating device

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WO2016143128A1 (ja) * 2015-03-12 2016-09-15 日本たばこ産業株式会社 フィルタ付きシガレットの製造方法
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US10034988B2 (en) 2012-11-28 2018-07-31 Fontem Holdings I B.V. Methods and devices for compound delivery
US10194693B2 (en) 2013-09-20 2019-02-05 Fontem Holdings 1 B.V. Aerosol generating device

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UA100599C2 (ru) 2013-01-10
JP2012504972A (ja) 2012-03-01
RU2011119218A (ru) 2012-11-27
NZ604254A (en) 2014-06-27
WO2010043475A1 (en) 2010-04-22
ZA201102529B (en) 2014-09-25
EP2364101A1 (de) 2011-09-14
PH12013500731A1 (en) 2015-01-26
EP2364101B1 (de) 2013-01-02
BRPI0920278A2 (pt) 2016-02-16
CN102186366A (zh) 2011-09-14
AU2009304131A1 (en) 2010-04-22
AU2009304131B2 (en) 2014-08-28
MX2011003656A (es) 2011-05-10
CA2740202A1 (en) 2010-04-22
NZ592103A (en) 2013-01-25
CL2011000794A1 (es) 2011-10-07
GB0818810D0 (en) 2008-11-19
KR20110063585A (ko) 2011-06-10
ES2397685T3 (es) 2013-03-08
PL2364101T3 (pl) 2013-06-28
CN103393216A (zh) 2013-11-20
US20110259352A1 (en) 2011-10-27
AR076440A1 (es) 2011-06-15

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