WO2014013054A2 - Article à fumer dont la fumée secondaire est réduite - Google Patents

Article à fumer dont la fumée secondaire est réduite Download PDF

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Publication number
WO2014013054A2
WO2014013054A2 PCT/EP2013/065282 EP2013065282W WO2014013054A2 WO 2014013054 A2 WO2014013054 A2 WO 2014013054A2 EP 2013065282 W EP2013065282 W EP 2013065282W WO 2014013054 A2 WO2014013054 A2 WO 2014013054A2
Authority
WO
WIPO (PCT)
Prior art keywords
smoking article
aerosol
forming substrate
airflow pathway
airflow
Prior art date
Application number
PCT/EP2013/065282
Other languages
English (en)
Other versions
WO2014013054A3 (fr
Inventor
John Faulkner
Sebastien LANASPEZE
Original Assignee
Philip Morris Products S.A.
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 Philip Morris Products S.A. filed Critical Philip Morris Products S.A.
Publication of WO2014013054A2 publication Critical patent/WO2014013054A2/fr
Publication of WO2014013054A3 publication Critical patent/WO2014013054A3/fr

Links

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
    • A24D1/22—Cigarettes with integrated combustible heat sources, e.g. with carbonaceous heat sources

Definitions

  • the present invention relates to a smoking article having reduced sidestream smoke.
  • the invention relates to smoking articles in which tobacco is heated rather than combusted.
  • the invention also relates to a method for reducing the sidestream smoke produced by a smoking article during use.
  • a number of smoking articles in which tobacco is heated rather than combusted have been proposed in the art.
  • One aim of such 'heated' smoking articles is to reduce known harmful smoke constituents of the type produced by the combustion and pyrolytic degradation of tobacco in conventional cigarettes.
  • an aerosol is generated by the transfer of heat from a combustible heat source to an aerosol-forming substrate located downstream of the combustible heat source.
  • volatile compounds are released from the aerosol-forming substrate by heat transfer from the combustible heat source and entrained in air drawn through the smoking article. As the released compounds cool, they condense to form an aerosol that is inhaled by the user.
  • WO-A2-2009/022232 discloses a smoking article comprising a combustible heat source, an aerosol-forming substrate downstream of the combustible heat source, and a heat-conducting element around and in direct contact with a rear portion of the combustible heat source and an adjacent front portion of the aerosol-forming substrate.
  • the combustible heat source has a through hole to provide an airflow pathway through the heated aerosol-forming substrate to the mouth-end of the smoking article.
  • providing such a through hole may result in the penetration of the lighter flame into the heat source during lighting of the smoking article. This may lead to combustion of the aerosol- forming substrate, which is undesired.
  • aerosol may form leading to visible sidestream smoke when the user is not puffing on the smoking article.
  • a smoking article having a mouth- end and a distal-end.
  • the smoking article comprises: a combustible heat source; an aerosol-forming substrate; at least one air inlet downstream of the aerosol-forming substrate; and an airflow pathway extending between the at least one air inlet and the mouth-end of the smoking article, wherein the airflow pathway comprises a first portion extending upstream from the at least one air inlet towards the aerosol-forming substrate and a second portion extending longitudinally downstream from the first portion towards the mouth-end of the smoking article, wherein the first portion is configured such that it has a component of direction perpendicular to the longitudinal axis of the smoking article, and a component of direction parallel to the longitudinal axis of the smoking article.
  • a smoking article By providing an airflow pathway having such a first portion, a smoking article is provided that enables condensation and/or absorption of the aerosol released by the aerosol-forming substrate in between puffs, thus reducing the emission of sidestream smoke.
  • the term 'airflow pathway' is used to describe a route along which air may be drawn through the smoking article for inhalation by a user.
  • the terms 'upstream' and 'downstream' relate to the relative position along the 'airflow pathway'.
  • the term 'front' relates to a relative position closer to the combustible heat source than the mouth-end of the smoking article, and the term 'rear' relates to a relative position closer to the mouth-end of the smoking article than the combustible heat source.
  • the term 'longitudinal' refers to a direction from the mouth-end of the smoking article to the combustible heat source end of the smoking article.
  • the term 'length' is used to describe the dimension in the longitudinal direction of the smoking article.
  • the term 'aerosol-forming substrate' is used to describe a substrate capable of releasing upon heating volatile compounds, which can form an aerosol.
  • the aerosols generated from aerosol-forming substrates of smoking articles according to the invention may be visible or invisible and may include vapours (for example, fine particles of substances, which are in a gaseous state, that are ordinarily liquid or solid at room temperature) as well as gases and liquid droplets of condensed vapours.
  • the first portion of the airflow pathway is configured to have component of direction perpendicular to the longitudinal axis of the smoking article, and a component of direction parallel to the longitudinal axis of the smoking article.
  • the first portion may form a tortuous airflow pathway between the air inlet and the aerosol-forming substrate.
  • the term 'tortuous' connotes that the airflow pathway has repeated turns or bends, e.g. it winds or twists between the air inlet and the aerosol-forming substrate.
  • the first portion forms a helical airflow pathway.
  • the axis of the helical pathway is substantially coincident with the longitudinal axis of the smoking article.
  • the first portion of the airflow pathway preferably at least partially surrounds the second portion of the airflow pathway.
  • the first portion of the airflow pathway is preferably formed around the second portion of the airflow pathway.
  • the first portion of the airflow pathway is preferably configured to extend along an outer portion of the smoking article from the air inlet to the aerosol-forming substrate
  • the second portion is preferably configured to extend along an inner portion of the smoking article from the aerosol-forming substrate to the mouth-end of the smoking article.
  • the first portion of the airflow pathway is preferably configured to be longer than the second portion of the airflow pathway.
  • the second portion of the airflow pathway preferably extends longitudinally from a location in, around, or near the aerosol-forming substrate substantially adjacent the combustible heat source to the mouth-end of the smoking article.
  • the second portion of the airflow pathway does not have a component of direction perpendicular to the longitudinal axis of the smoking article.
  • the second portion is linear.
  • the second portion is preferably shorter than the first portion.
  • the second portion of the airflow pathway is preferably configured to reduce the amount of condensation that occurs before the user inhales the aerosol.
  • the smoking article comprises an airflow directing element to achieve an airflow pathway as described above.
  • the airflow directing element is preferably downstream of the aerosol-forming substrate, and the element preferably defines the first portion of the airflow pathway and the second portion of the airflow pathway.
  • the airflow directing element preferably comprises an open-ended, substantially air impermeable hollow body.
  • the hollow body has a first end configured to be near or adjacent to the mouth-end of the smoking article, and a second end configured to be near or adjacent to the aerosol-forming substrate.
  • the hollow body is preferably a right circular cylinder.
  • the second portion of the airflow pathway is preferably bounded by the inner surface of the hollow body.
  • the first portion of the airflow pathway is preferably formed by a channel on the outer surface of the hollow body.
  • An open channel is preferably formed by wrapping material around the outer surface of the hollow body.
  • the material is preferably wrapped to form a helical shaped channel along the outer surface of the hollow body.
  • the material is preferably elongate, and preferably has a thickness of between about 0.1 mm and about 0.4 mm, more preferably between about 0.2 mm and about 0.3 mm.
  • the material preferably has a width between about 10 mm and about 15 mm.
  • the material is preferably cardboard, or any other suitable material.
  • the open channel is preferably closed by wrapping the hollow body and the elongate material in a wrapper material.
  • the wrapper material is substantially air impermeable.
  • the air inlets are preferably arranged circumferentially around the wrapper material.
  • the term 'air inlet' is used to describe one or more holes, slits, slots or other apertures in the outer wrapper and any other materials circumscribing components of smoking articles according to the invention through which air may be drawn into the one or more airflow pathways.
  • the air inlets are preferably holes in the wrapper material.
  • the holes are preferably substantially equally spaced about the circumference of the airflow directing element.
  • a collar is preferably provided around the first end of the hollow body.
  • the collar is preferably substantially air impermeable, and is configured to substantially prevent air from flowing directly from the air inlets to the mouth-end without passing along the airflow pathway.
  • the collar is preferably wrapped in the wrapper material.
  • the combustible heat source is preferably upstream from the aerosol-forming substrate.
  • the heat source may be in the form of a blade that is configured to be inserted into the aerosol-forming substrate.
  • the heat source may be configured to surround the aerosol-forming substrate, and as such may be in the form of a hollow cylinder, or any other such suitable form.
  • the combustible heat source is preferably a carbonaceous heat source.
  • carbonaceous' is used to describe a combustible heat source comprising carbon.
  • the combustible heat source is cylindrical.
  • the combustible heat source is isolated from the airflow pathway such that air drawn along the airflow pathway does not directly contact the combustible heat source.
  • a heat source is referred to herein as a 'blind' heat source.
  • blind' is used to describe a heat source of a smoking article according to the invention in which air drawn through the smoking article for inhalation by a user does not pass through any airflow channels along the heat source.
  • the heat source is 'non-blind'.
  • the term 'non-blind' is used to describe a combustible heat source of a smoking article according to the invention in which air drawn through the smoking article for inhalation by a user passes through one or more airflow channels along the combustible heat source.
  • the combustible heat source has opposed front and rear faces.
  • the combustible heat source preferably has a non-combustible, substantially air impermeable first barrier provided on at least substantially the entire rear face of the combustible heat source.
  • the first barrier comprises a first barrier coating provided on a rear face of the combustible heat source.
  • the first barrier comprises a first barrier coating provided on at least substantially the entire rear face of the combustible heat source. More preferably, the first barrier comprises a first barrier coating provided on the entire rear face of the combustible heat source. The barrier substantially isolates the heat source from the aerosol-forming substrate.
  • the term 'isolated combustible heat source' is used to describe a combustible heat source that does not come into direct contact with air drawn through the smoking article along the one or more airflow pathways.
  • the term 'direct contact' is used to describe contact between air drawn through the smoking article along the airflow pathway and a surface of the heat source.
  • the heat source is preferably provided with a barrier wrapped around the circumference of the heat source.
  • a similar barrier may also be wrapped around at least a portion of the aerosol-forming substrate such that heat is more effectively conducted from the heat source to the aerosol-forming substrate.
  • the above-described barrier is provided in the form of a heat-conducting element around and in contact with a rear portion of the heat source and a front portion of the aerosol-forming substrate.
  • the portion of the heat-conducting element around the front portion of the aerosol-forming substrate comprises at least one air transfer inlet.
  • the first portion of the airflow pathway is between the at least one external air inlet and the at least one air transfer inlet, and the second portion of the airflow pathway is between the at least one air transfer inlet and the mouth-end of the smoking article.
  • the heat-conducting element is formed from aluminium, or any other suitable heat conducting material.
  • the airflow directing element is partially formed by wrapping the elongate material around the hollow body to form the open channel.
  • the collar is wrapped around the hollow body.
  • the heat source and aerosol- forming substrate are connected together by the heat-conducting element in a separate operation.
  • the partially formed airflow directing element, and the heat source and aerosol- forming substrate are connected together by wrapping both components in the outer wrapper material.
  • the mouth-end element is connected to the airflow directing element by the wrapper material. In this way, a smoking article of the invention can be formed.
  • a method of reducing or eliminating smoke from an aerosol-forming substrate of a smoking article in between puffs comprising providing a smoking article comprising: a combustible heat source; an aerosol-forming substrate; at least one external air inlet downstream of the aerosol-forming substrate; and an airflow pathway extending between the at least one external air inlet and the mouth-end of the smoking article, wherein the airflow pathway comprises a first portion extending upstream from the at least one external air inlet towards the aerosol-forming substrate and a second portion extending longitudinally downstream from the first portion towards the mouth end of the smoking article, wherein the first portion is configured such that it has a component of direction perpendicular to the longitudinal axis of the smoking article, and a component of direction parallel to the longitudinal axis of the smoking article, such that, in use and in between puffs, smoke generated by heating the aerosol-forming substrate condenses on the walls of the first portion of the airflow pathway as the smoke moves
  • the aerosol (smoke) flows back up the first portion of the airflow pathway from the aerosol-forming substrate towards the external air inlet.
  • the first portion of the airflow pathway is configured to increase condensation of the aerosol (smoke) constituents to reduce the aerosol (smoke) exiting the external air inlets. It is believed that the condensation may increase due to the increased surface area of the airflow pathway along the the increased length of the first portion as compared to a pathway that comprises a straight line between the aerosol-forming substrate and the external air inlets.
  • the condensation of the aerosol may increase due to the increased likelihood of impaction of the smoke on the walls of the airflow pathway.
  • visible aerosol exiting the external air inlet may be reduced.
  • Figure 1 shows a smoking article according to the present invention
  • Figures 2(a) and (b) show the airflow pathway during puffing by a user, and when the user is not puffing, respectively;
  • Figure 3 shows a heat conducting element configured to conduct heat between the heat source and the aerosol-forming substrate
  • Figure 4 shows an example of the airflow directing element, and a means for forming the first and second portions of the airflow pathway.
  • FIG. 1 shows a smoking article 100.
  • the smoking article comprises a combustible heat source 102, an aerosol-forming substrate 104 between which is a heat conducting element 106.
  • the smoking article further comprises a mouth-end element 108, such as a filter element.
  • An airflow directing element 1 10 is provided between the aerosol-forming substrate 104 and the mouth-end element 108.
  • External air inlet holes 1 12 are provided circumferentially around the outer wrapping of the airflow directing element 1 10.
  • a first portion 1 14 of an airflow pathway is provided around the airflow directing element and is provided to guide air from the external air inlet holes 1 12 to the aerosol-forming substrate 104.
  • the first portion is formed as a channel in a helical arrangement around the airflow directing element, and thus the length of the first portion of the airflow pathway is increased as compared to the straight line distance from the external air inlets to the aerosol-forming substrate.
  • a second portion 1 16 of an airflow pathway is provided within the airflow directing element to guide air from the aerosol-forming substrate to the mouth-end of the smoking article.
  • the second portion is formed by the wall of a hollow tube that forms the airflow directing element.
  • the first portion of the airflow directing element is bounded by the outer surface of the wall forming the hollow tube of the airflow directing element.
  • a substantially air impermeable collar 1 18 is provided between the section of the airflow directing element 1 10 forming the first portion 1 14 of the airflow directing element, and the mouth-end element 108. In use, the collar 1 18 substantially prevents air flowing directly from the external air inlets 1 12 to the mouth-end 108.
  • Air transfer inlets 120 may be provided circumferentially around the heat conducting element 106 to facilitate passing air from the first portion 1 14 of the airflow pathway into the aerosol- forming substrate 104.
  • FIG. 2(a) shows the airflow when the user is not puffing on the smoking article.
  • aerosol continues to be generated because the aerosol-forming substrate is continuously heated by the heat source once the heat source is ignited.
  • the increased length of the first portion of the airflow pathway provides increased time and surface area of the first portion channel for the aerosol to cool more, condense and/or be absorbed/adsorbed as the aerosol moves from the aerosol-forming substrate to the external air inlets.
  • the amount of sidestream smoke exiting the external air inlets when the user is not puffing on the smoking article is reduced.
  • the heat conducting element 106 comprises a first element 300 configured to wrap around the heat source, and a second element 302 configured to wrap around the aerosol-forming substrate.
  • a third element (not shown) is provided between the first and second elements of the heat conducting element to form a barrier between the heat source and the aerosol-forming substrate.
  • the air transfer inlets 120 are provided circumferentially around the second element 302, and in one example four such inlets are provided equally spaced about the circumference.
  • the air transfer inlets may be about 0.5 mm is diameter.
  • the first element 300 is approximately 8 mm in diameter and approximately 4 mm wide.
  • the second element 302 is approximately 7.3 mm in diameter and approximately 5 mm wide.
  • the heat conducting element may be manufactured from any suitable material but is preferably manufactured from aluminium.
  • a hollow cylindrical tube 400 is provided which forms the second portion of the airflow pathway.
  • the hollow tube has an external diameter 402 of between about 6 mm and about 7.2 mm and an internal diameter 404 of between about 5.4 mm and about 6.8 mm.
  • the first portion of the airflow pathway is formed by wrapping a long and narrow strip 406 of material is wrapped around the hollow tube 400 in the form of a helix to form an open channel around the outer wall of the hollow tube.
  • the strip 406 has a width 408 of between about 10 mm and about 15 mm.
  • a substantially air impermeable wrapper (not shown) is then wrapped around the hollow tube to form a closed channel which forms the first portion of the air flow pathway.
  • a plurality of holes are formed circumferentially around the wrapper to form the air inlet holes 1 12.

Landscapes

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

Abstract

Cette invention concerne un article à fumer dont la fumée secondaire est réduite, ledit article à fumer comportant une extrémité buccale et une extrémité distale. L'article à fumer comprend : une source de chaleur combustible ; un substrat générateur d'aérosol ; au moins un port d'entrée d'air en aval du substrat générateur d'aérosol ; et un conduit d'écoulement d'air situé entre ledit port d'entrée d'air et l'extrémité buccale de l'article à fumer, ledit conduit d'écoulement d'air comprenant une première portion partant en amont dudit port d'entrée d'air en direction du substrat générateur d'aérosol et une seconde portion partant longitudinalement en aval de ladite première portion en direction de l'extrémité buccale de l'article à fumer, ladite première portion étant conçue pour comprendre un composant ayant une direction perpendiculaire à l'axe longitudinal de l'article à fumer, et un composant ayant une direction parallèle à l'axe longitudinal de l'article à fumer. L'invention concerne également une méthode permettant de réduire la fumée secondaire produite par l'article à fumer lors de l'utilisation.
PCT/EP2013/065282 2012-07-19 2013-07-19 Article à fumer dont la fumée secondaire est réduite WO2014013054A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP12177169.5 2012-07-19
EP12177169 2012-07-19

Publications (2)

Publication Number Publication Date
WO2014013054A2 true WO2014013054A2 (fr) 2014-01-23
WO2014013054A3 WO2014013054A3 (fr) 2014-03-20

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PCT/EP2013/065282 WO2014013054A2 (fr) 2012-07-19 2013-07-19 Article à fumer dont la fumée secondaire est réduite

Country Status (3)

Country Link
AR (1) AR091833A1 (fr)
TW (1) TW201410163A (fr)
WO (1) WO2014013054A2 (fr)

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WO2015174442A1 (fr) * 2014-05-15 2015-11-19 日本たばこ産業株式会社 Inhalateur d'arôme et élément du type coupe
WO2016162932A1 (fr) * 2015-04-06 2016-10-13 日本たばこ産業株式会社 Inhalateur d'arôme, élément de maintien intérieur, procédé de production d'inhalateur d'arôme, et procédé de production d'élément de maintien intérieur
WO2016162933A1 (fr) * 2015-04-06 2016-10-13 日本たばこ産業株式会社 Inhalateur d'arôme et élément de maintien intérieur
WO2022133982A1 (fr) * 2020-12-25 2022-06-30 中国烟草总公司郑州烟草研究院 Produit de tabac chauffé à la paroi latérale perforée
CN114760865A (zh) * 2020-11-10 2022-07-15 韩国烟草人参公社 气溶胶生成物品
WO2023115959A1 (fr) * 2021-12-21 2023-06-29 深圳市吉迩科技有限公司 Produit de génération d'aérosol et système de génération d'aérosol

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AU2015379291B2 (en) * 2015-01-26 2019-06-06 Japan Tobacco Inc. Non-combustion type flavor inhaler, flavor source unit, and method for manufacturing member used in a non-combustion type flavor inhaler
MX2019006898A (es) 2016-12-19 2019-08-22 Philip Morris Products Sa Sistema generador de aerosol que tiene un cartucho con una abertura lateral.

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WO2009022232A2 (fr) 2007-08-10 2009-02-19 Philip Morris Products S.A. Article à fumer à base de distillation

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US5144962A (en) * 1989-12-01 1992-09-08 Philip Morris Incorporated Flavor-delivery article
US6994096B2 (en) * 2003-01-30 2006-02-07 Philip Morris Usa Inc. Flow distributor of an electrically heated cigarette smoking system
US20070102013A1 (en) * 2005-09-30 2007-05-10 Philip Morris Usa Inc. Electrical smoking system
DE102007026979A1 (de) * 2006-10-06 2008-04-10 Friedrich Siller Inhalationsvorrichtung
TWI595840B (zh) * 2012-02-13 2017-08-21 菲利浦莫里斯製品股份有限公司 具有改良的氣流之菸品

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WO2009022232A2 (fr) 2007-08-10 2009-02-19 Philip Morris Products S.A. Article à fumer à base de distillation

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015174442A1 (fr) * 2014-05-15 2015-11-19 日本たばこ産業株式会社 Inhalateur d'arôme et élément du type coupe
US11160302B2 (en) 2014-05-15 2021-11-02 Japan Tobacco Inc. Flavor inhaler and cup
JPWO2016162932A1 (ja) * 2015-04-06 2017-08-10 日本たばこ産業株式会社 香味吸引器、内側保持部材、香味吸引器の製造方法及び内側保持部材の製造方法
EA033659B1 (ru) * 2015-04-06 2019-11-13 Japan Tobacco Inc Ароматический ингалятор и внутренний держатель
WO2016162933A1 (fr) * 2015-04-06 2016-10-13 日本たばこ産業株式会社 Inhalateur d'arôme et élément de maintien intérieur
KR20170127529A (ko) * 2015-04-06 2017-11-21 니뽄 다바코 산교 가부시키가이샤 향미 흡인기, 내측 보유 부재, 향미 흡인기의 제조 방법 및 내측 보유 부재의 제조 방법
EP3260001A4 (fr) * 2015-04-06 2018-11-21 Japan Tobacco, Inc. Inhalateur d'arôme et élément de maintien intérieur
KR102003147B1 (ko) * 2015-04-06 2019-07-23 니뽄 다바코 산교 가부시키가이샤 향미 흡인기, 내측 보유 부재, 향미 흡인기의 제조 방법 및 내측 보유 부재의 제조 방법
US10426194B2 (en) 2015-04-06 2019-10-01 Japan Tobacco Inc. Flavor inhaler and inside holding member
JPWO2016162933A1 (ja) * 2015-04-06 2017-08-10 日本たばこ産業株式会社 香味吸引器及び内側保持部材
EA034532B1 (ru) * 2015-04-06 2020-02-18 Джапан Тобакко Инк. Ароматический ингалятор, внутренний держатель, способ изготовления ароматического ингалятора и способ изготовления внутреннего держателя
US10588345B2 (en) 2015-04-06 2020-03-17 Japan Tobacco Inc. Flavor inhaler, inside holding member, production method for flavor inhaler, and production method for inside holding member
WO2016162932A1 (fr) * 2015-04-06 2016-10-13 日本たばこ産業株式会社 Inhalateur d'arôme, élément de maintien intérieur, procédé de production d'inhalateur d'arôme, et procédé de production d'élément de maintien intérieur
CN114760865A (zh) * 2020-11-10 2022-07-15 韩国烟草人参公社 气溶胶生成物品
CN114760865B (zh) * 2020-11-10 2023-11-17 韩国烟草人参公社 气溶胶生成物品
WO2022133982A1 (fr) * 2020-12-25 2022-06-30 中国烟草总公司郑州烟草研究院 Produit de tabac chauffé à la paroi latérale perforée
WO2023115959A1 (fr) * 2021-12-21 2023-06-29 深圳市吉迩科技有限公司 Produit de génération d'aérosol et système de génération d'aérosol

Also Published As

Publication number Publication date
WO2014013054A3 (fr) 2014-03-20
AR091833A1 (es) 2015-03-04
TW201410163A (zh) 2014-03-16

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