EP3752013B1 - Aerosol-generating article with ventilated hollow segment - Google Patents

Aerosol-generating article with ventilated hollow segment Download PDF

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Publication number
EP3752013B1
EP3752013B1 EP19832124.2A EP19832124A EP3752013B1 EP 3752013 B1 EP3752013 B1 EP 3752013B1 EP 19832124 A EP19832124 A EP 19832124A EP 3752013 B1 EP3752013 B1 EP 3752013B1
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EP
European Patent Office
Prior art keywords
aerosol
hollow tubular
millimetres
generating article
tubular segment
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.)
Active
Application number
EP19832124.2A
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German (de)
English (en)
French (fr)
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EP3752013A1 (en
Inventor
Jérôme UTHURRY
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.)
Philip Morris Products SA
Original Assignee
Philip Morris Products SA
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Publication date
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Application filed by Philip Morris Products SA filed Critical Philip Morris Products SA
Priority to EP22205871.1A priority Critical patent/EP4193851A1/en
Publication of EP3752013A1 publication Critical patent/EP3752013A1/en
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Classifications

    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00Cigars; Cigarettes
    • A24D1/20Cigarettes specially adapted for simulated smoking devices
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24CMACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/14Machines of the continuous-rod type
    • A24C5/18Forming the rod
    • A24C5/1885Forming the rod for cigarettes with an axial air duct
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00Cigars; Cigarettes
    • A24D1/02Cigars; Cigarettes with special covers
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00Cigars; Cigarettes
    • A24D1/02Cigars; Cigarettes with special covers
    • A24D1/027Cigars; Cigarettes with special covers with ventilating means, e.g. perforations
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00Cigars; Cigarettes
    • A24D1/04Cigars; Cigarettes with mouthpieces or filter-tips
    • A24D1/042Cigars; Cigarettes with mouthpieces or filter-tips with mouthpieces
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00Cigars; Cigarettes
    • A24D1/04Cigars; Cigarettes with mouthpieces or filter-tips
    • A24D1/045Cigars; Cigarettes with mouthpieces or filter-tips with smoke filter means
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02Manufacture of tobacco smoke filters
    • A24D3/0275Manufacture of tobacco smoke filters for filters with special features
    • A24D3/0279Manufacture of tobacco smoke filters for filters with special features with tubes
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04Tobacco smoke filters characterised by their shape or structure
    • A24D3/043Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06Use of materials for tobacco smoke filters
    • A24D3/08Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • A24D3/10Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives

Definitions

  • the present invention relates to an aerosol generating article comprising an aerosol-generating substrate and adapted to produce an inhalable aerosol upon heating.
  • Aerosol-generating articles in which an aerosol-generating substrate, such as a tobacco-containing substrate, is heated rather than combusted, are known in the art.
  • an aerosol is generated by the transfer of heat from a heat source to a physically separate aerosol-generating substrate or material, which may be located in contact with, within, around, or downstream of the heat source.
  • volatile compounds are released from the aerosol-generating substrate by heat transfer from the heat source and are entrained in air drawn through the aerosol-generating article. As the released compounds cool, they condense to form an aerosol.
  • aerosol-generating devices for consuming aerosol-generating articles.
  • Such devices include, for example, electrically heated aerosol-generating devices in which an aerosol is generated by the transfer of heat from one or more electrical heater elements of the aerosol-generating device to the aerosol-generating substrate of a heated aerosol-generating article.
  • Substrates for heated aerosol-generating articles have, in the past, typically been produced using randomly oriented shreds, strands, or strips of tobacco material.
  • rods for heated aerosol-generating articles have been proposed, for example in international patent application WO-A-2012/164009 , that are formed from gathered sheets of tobacco material.
  • the rods disclosed in WO-A-2012/164009 have a longitudinal porosity that allows air to be drawn through the rods. Effectively, folds in the gathered sheets of tobacco material define longitudinal channels through the rod.
  • rods for heated aerosol-generating articles are known from international patent application WO-A-2011/101164 . These rods are formed from strands of homogenised tobacco material, which may be formed by casting, rolling, calendering or extruding a mixture comprising particulate tobacco and at least one aerosol former to form a sheet of homogenised tobacco material. In an alternative embodiments, the rods of WO-A-2011/101164 may also be formed from strands of homogenised tobacco material obtained by extruding a mixture comprising particulate tobacco and at least one aerosol former to form continuous lengths of homogenised tobacco material.
  • Substrates for heated aerosol-generating articles typically further comprise an aerosol former, that is, a compound or mixture of compounds that, in use, facilitates formation of the aerosol and that preferably is substantially resistant to thermal degradation at the operating temperature of the aerosol-generating article.
  • aerosol-formers include: polyhydric alcohols, such as propylene glycol, triethylene glycol, 1,3-butanediol and glycerin; esters of polyhydric alcohols, such as glycerol mono-, di- or triacetate; and aliphatic esters of mono-, di- or polycarboxylic acids, such as dimethyl dodecanedioate and dimethyl tetradecanedioate.
  • an aerosol-generating article for producing an inhalable aerosol upon heating one or more additional elements that are assembled with the substrate in a same wrapper.
  • additional elements include a mouthpiece filtration segment, a support element adapted to impart structural strength to the aerosol-generating article, a cooling element adapted to favour cooling of the aerosol prior to reaching the mouthpiece, and so forth.
  • additional elements include a mouthpiece filtration segment, a support element adapted to impart structural strength to the aerosol-generating article, a cooling element adapted to favour cooling of the aerosol prior to reaching the mouthpiece, and so forth.
  • aerosol-generating articles have also been proposed that have a simpler structure.
  • additional components such as, for example, an-aerosol-cooling element, it may become more difficult to manufacture aerosol-generating articles that consistently provide the consumer with a satisfactory aerosol delivery and RTD.
  • KR 2018 0088770 A discloses an aerosol-generating article comprising an aerosol generating segment and a filter tip segment wrapped by common paper, wherein a hollowed segment wrapped by the common paper is disposed between the aerosol-generating segment and the filter tip segment.
  • the aerosol-generating segment is filled with plant fibre adsorbing an atomized object.
  • the filter tip segment is filled with PLA. A total length of the filter tip segment and the hollowed segment is larger than 30 mm.
  • the common paper of the hollowed segment is provided with a plurality of first capillary pores; the common paper of the filter tip segment is provided with a plurality of second capillary pores; a length of the filter tip segment is 5 mm-25 mm, and a suction resistance of the filter tip segment is 2000 Pa-5000 Pa.
  • the first capillary pores being provided in the common paper of the hollowed segment, the cold air originally contained in the hollowed segment is discharged through the first capillary pores while volatile substances are stored in the hollowed segment, so as to avoid the discomfort caused by suction of the cold air when the smoking is started. Due to the small size of the first capillary pores, it is ensured that the airflow can be established only under a certain pressure difference. During the suction, cold air from the outside can be drawn in to cool the sucked high temperature smoke, and the high temperature smoke is prevented from burning the respiratory mucosa.
  • EP3398460 A1 discloses an electrically-powered, aerosol-generating smoking article, which comprises a cigarette comprising a tobacco segment circumscribed by a wrapping material and comprising a tobacco material and an aerosol-forming material.
  • An elongated portion of a resistance heating element of the smoking article extends into the tobacco segment and, during use, aerosol-forming material can be volatilized to produce a visible mainstream aerosol incorporating tobacco components or tobacco-derived components that can be drawn into the mouth of the user of the smoking article.
  • Exemplary aerosol-forming materials include glycerin, propylene glycol, and mixtures thereof.
  • an aerosol generating article that enables the provision of a consistently satisfactory aerosol delivery to the consumer during use. Further, it would be desirable to provide one such improved aerosol-generating article that has a satisfactory RTD value. It would be equally desirable to provide one such aerosol-generating article that can be manufactured efficiently and at high speed, preferably with a low RTD variability from one article to another.
  • the present invention aims at providing a technical solution adapted to achieve at least one of the desirable results described above.
  • an aerosol-generating article for producing an inhalable aerosol when heated, the aerosol-generating article comprising: a rod of aerosol-generating substrate; a mouthpiece segment comprising a plug of filtration material, the mouthpiece segment being arranged downstream of the rod and in longitudinal alignment with the first segment; and a hollow tubular segment at a location between the rod and the mouthpiece segment.
  • the hollow tube segment is in longitudinal alignment with the rod and the mouthpiece segment. Further, the hollow tubular segment defines a cavity extending all the way to an upstream end of the mouthpiece segment.
  • the aerosol-generating article further comprises a ventilation zone at a location along the hollow tubular segment.
  • the rod of aerosol-generating substrate comprises at least an aerosol former, the rod of aerosol-generating substrate having an aerosol former content of at least about 10 percent on a dry weight basis.
  • the rod of aerosol-generating substrate has a length of less than 40 millimetres.
  • aerosol generating article is used herein to denote an article wherein an aerosol generating substrate is heated to produce an deliver inhalable aerosol to a consumer.
  • aerosol generating substrate denotes a substrate capable of releasing volatile compounds upon heating to generate an aerosol.
  • a conventional cigarette is lit when a user applies a flame to one end of the cigarette and draws air through the other end.
  • the localised heat provided by the flame and the oxygen in the air drawn through the cigarette causes the end of the cigarette to ignite, and the resulting combustion generates an inhalable smoke.
  • an aerosol is generated by heating a flavour generating substrate, such as tobacco.
  • Known heated aerosol generating articles include, for example, electrically heated aerosol generating articles and aerosol generating articles in which an aerosol is generated by the transfer of heat from a combustible fuel element or heat source to a physically separate aerosol forming material.
  • aerosol generating articles according to the invention find particular application in aerosol generating systems comprising an electrically heated aerosol generating device having an internal heater blade which is adapted to be inserted into the rod of aerosol generating substrate.
  • Aerosol generating articles of this type are described in the prior art, for example, in EP 0822670 .
  • aerosol generating device refers to a device comprising a heater element that interacts with the aerosol generating substrate of the aerosol generating article to generate an aerosol.
  • tubular segment is used to denote an elongate element defining a lumen or airflow passage along a longitudinal axis thereof.
  • tubular will be used in the following with reference to a tubular element having a substantially cylindrical cross-section and defining at least one airflow conduit establishing an uninterrupted fluid communication between an upstream end of the tubular element and a downstream end of the tubular element.
  • tubular may be possible.
  • the term “longitudinal” refers to the direction corresponding to the main longitudinal axis of the aerosol-generating article, which extends between the upstream and downstream ends of the aerosol-generating article.
  • the terms “upstream” and “downstream” describe the relative positions of elements, or portions of elements, of the aerosol-generating article in relation to the direction in which the aerosol is transported through the aerosol-generating article during use.
  • transverse refers to the direction that is perpendicular to the longitudinal axis. Any reference to the "cross-section" of the aerosol-generating article or a component of the aerosol-generating article refers to the transverse cross-section unless stated otherwise.
  • length denotes the dimension of a component of the aerosol-generating article in the longitudinal direction.
  • length may be used to denote the dimension of the rod or of the elongate tubular elements in the longitudinal direction.
  • thickness of a peripheral wall of the tubular element is used in the present specification to denote the minimum distance measured between the outer surface and the inner surface of the wall delimiting peripherally the tubular element.
  • the distance at a given location is measured along a direction locally substantially perpendicular to the outer surface and the inner surface of the tubular element.
  • the distance is measured along a substantially radial direction of the tubular element.
  • the thickness of the peripheral wall of the tubular element is constant. In alternative embodiments, the thickness of the peripheral wall of the tubular element varies along the length of the tubular element. This may be because the tubular element is formed from a material having an irregular surface finish (for example, the tubular element is provided in the form of a cellulose acetate tube). Alternatively, this may be because the tubular element is designed to include a tapered section or the like.
  • the "thickness of a peripheral wall of the tubular element" is taken as the average value calculated on the basis of several values measured as the minimum distance between the outer surface and the inner surface of the wall at different locations along the length of the tubular element.
  • a particularly significant parameter is the thickness of the peripheral wall of the tubular element at the location of the ventilation zone.
  • air-impervious material is used throughout this specification to mean a material not allowing the passage of fluids, particularly air and smoke, through interstices or pores in the material. If the hollow tubular segment is formed of a material impervious to air and aerosol particles, air and aerosol particles drawn through the hollow tubular segment are forced to flow through the airflow conduit internally defined by the hollow tubular segment, but cannot flow across the peripheral wall of the hollow tubular segment.
  • homogenised tobacco material encompasses any tobacco material formed by the agglomeration of particles of tobacco material.
  • Sheets or webs of homogenised tobacco material are formed by agglomerating particulate tobacco obtained by grinding or otherwise powdering of one or both of tobacco leaf lamina and tobacco leaf stems.
  • homogenised tobacco material may comprise a minor quantity of one or more of tobacco dust, tobacco fines, and other particulate tobacco by-products formed during the treating, handling and shipping of tobacco.
  • the sheets of homogenised tobacco material may be produced by casting, extrusion, paper making processes or other any other suitable processes known in the art.
  • porous is used herein to refer to a material that provides a plurality of pores or openings that allow the passage of air through the material.
  • ventilation level is used throughout the present specification to denote a volume ratio between of the airflow admitted into the aerosol-generating article via the ventilation zone (ventilation airflow) and the sum of the aerosol airflow and the ventilation airflow. The greater the ventilation level, the higher the dilution of the aerosol flow delivered to the consumer.
  • the aerosol-generating article of the present invention comprises a rod of aerosol-generating substrate; a mouthpiece segment comprising a plug of filtration material, and a hollow tubular segment at a location between the rod and the mouthpiece segment. All three elements are longitudinally aligned.
  • the rod of aerosol-generating substrate comprises at least an aerosol former.
  • the rod of aerosol-generating substrate has an aerosol former content of at least about 10 percent on a dry weight basis.
  • the hollow tubular segment defines a cavity that extends all the way to an upstream end of the mouthpiece segment, and a ventilation zone is provided at a location along the hollow tubular segment.
  • an equivalent internal diameter of the hollow tube segment is at least about 5 millimetres.
  • the overall structural complexity of the article may be significantly reduced compared with existing aerosol-generating articles. This advantageously simplifies the manufacturing process and reduces the complexity of the making and combining apparatus required for implementing the manufacturing process.
  • One such aerosol-generating article does not necessarily comprise an aerosol-cooling element adapted to lower the temperature of a stream of aerosol drawn through the aerosol-generating article - as is the case, for example, with the aerosol-generating articles described in international patent application WO 2013/120565 .
  • the inventors have found that a satisfactory cooling of the stream of aerosol generated upon heating the article and drawn through the hollow tubular element is achieved by providing a ventilation zone at a location along the hollow tubular segment. Further, the inventors have surprisingly found that, by utilising a hollow tubular segment having an equivalent internal diameter of at least about 5 millimetres, it may be possible to counter the effects of the increased aerosol dilution caused by the admission of ventilation air into the article.
  • the overall proportion of the aerosol particulate phase to the aerosol gas phase may be enhanced compared with existing, non-ventilated aerosol-generating articles.
  • a hollow tubular element with an equivalent internal diameter of 5 millimetres or more ensures that the overall internal volume of the hollow tubular element - which is made available for the aerosol to begin the nucleation process as soon as the aerosol components leave the rod of aerosol-generating substrate - and the cross-sectional surface area of the hollow tubular segment are effectively maximised, whilst at the same time ensuring that the hollow tubular segment has the necessary structural strength to prevent a collapse of the aerosol-generating article as well as to provide some support to the rod of aerosol-generating substrate, and that the RTD of the hollow tubular segment is minimised.
  • the inventors have surprisingly found how the favourable effect of enhanced nucleation may significantly counter the less desirable effects of dilution, such that satisfactory values of aerosol delivery are consistently achieved with aerosol-generating articles in accordance with the invention.
  • This is particularly advantageous with "short" aerosol-generating articles, such as ones wherein a length of the rod of aerosol-generating substrate is less than about 40 millimetres, preferably less than 25 millimetres, even more preferably less than 20 millimetres, or wherein an overall length of the aerosol-generating article is less than about 70 millimetres, preferably less than about 60 millimetres, even more preferably less than 50 millimetres.
  • a length of the rod of aerosol-generating substrate is less than about 40 millimetres, preferably less than 25 millimetres, even more preferably less than 20 millimetres, or wherein an overall length of the aerosol-generating article is less than about 70 millimetres, preferably less than about 60 millimetres, even more preferably less than 50 mill
  • the hollow tubular element substantially does not contribute to the RTD of the aerosol-generating article
  • the overall RTD of the article can advantageously be fine-tuned by adjusting the length and density of the rod of aerosol-generating substrate or the length and density of the segment of filtration material of the mouthpiece. This enables the manufacture of aerosol-generating substrates having a predetermined RTD consistently and with great precision, such that satisfactory levels of RTD can be provided for the consumer even in the presence of ventilation.
  • Aerosol-generating articles in accordance with the invention can be made in a continuous process which can be efficiently carried out at high speed, and can be conveniently manufactured on existing production lines for the manufactured of heated aerosol generating articles without requiring extensive modifications of the manufacturing equipment.
  • the rod of aerosol generating substrate preferably has an external diameter that is approximately equal to the external diameter of the aerosol generating article.
  • the rod of aerosol generating substrate has an external diameter of at least 5 millimetres.
  • the rod of aerosol generating substrate may have an external diameter of between about 5 millimetres and about 12 millimetres, for example of between about 5 millimetres and about 10 millimetres or of between about 6 millimetres and about 8 millimetres.
  • the rod of aerosol generating substrate has an external diameter of 7.2 millimetres, to within 10 percent.
  • the rod of aerosol generating substrate may have a length of at least about 5 millimetres, more preferably at least about 7 millimetres. In particularly preferred embodiments, the rod of aerosol generating substrate has a length of less than about 35 millimetres, more preferably less than 25 millimetres, even more preferably less than about 20 millimetres. In one embodiment, the rod of aerosol generating substrate may have a length of about 10 millimetres. In a preferred embodiment, the rod of aerosol generating substrate has a length of about 12 millimetres.
  • the rod of aerosol generating substrate has a substantially uniform cross-section along the length of the rod.
  • the rod of aerosol generating substrate has a substantially circular cross-section.
  • the aerosol-generating substrate comprises one or more gathered sheets of homogenised tobacco material.
  • the one or more sheets of homogenised tobacco material are textured.
  • the term 'textured sheet' denotes a sheet that has been crimped, embossed, debossed, perforated or otherwise deformed.
  • Textured sheets of homogenised tobacco material for use in the invention may comprise a plurality of spaced-apart indentations, protrusions, perforations or a combination thereof.
  • the rod of aerosol-generating substrate comprises a gathered crimped sheet of homogenised tobacco material circumscribed by a wrapper.
  • the term crimped sheet' is intended to be substantially synonymous with the term 'creped sheet' and denotes a sheet having a plurality of substantially parallel ridges or corrugations.
  • the crimped sheet of homogenised tobacco material has a plurality of ridges or corrugations substantially parallel to the cylindrical axis of the rod according to the invention. This advantageously facilitates gathering of the crimped sheet of homogenised tobacco material to form the rod.
  • crimped sheets of homogenised tobacco material for use in the invention may alternatively or in addition have a plurality of substantially parallel ridges or corrugations disposed at an acute or obtuse angle to the cylindrical axis of the rod.
  • sheets of homogenised tobacco material for use in the rod of the article of the invention may be substantially evenly textured over substantially their entire surface.
  • crimped sheets of homogenised tobacco material for use in the manufacture of a rod for use in an aerosol-generating article in accordance with the invention may comprise a plurality of substantially parallel ridges or corrugations that are substantially evenly spaced-apart across the width of the sheet.
  • Sheets or webs of homogenised tobacco material for use in the invention may have a tobacco content of at least about 40 percent by weight on a dry weight basis, more preferably of at least about 60 percent by weight on a dry weight basis, more preferably or at least about 70 percent by weight on a dry basis and most preferably at least about 90 percent by weight on a dry weight basis.
  • Sheets or webs of homogenised tobacco material for use in the aerosol-generating substrate may comprise one or more intrinsic binders, that is tobacco endogenous binders, one or more extrinsic binders, that is tobacco exogenous binders, or a combination thereof to help agglomerate the particulate tobacco.
  • sheets of homogenised tobacco material for use in the aerosol-generating substrate may comprise other additives including, but not limited to, tobacco and non-tobacco fibres, aerosol-formers, humectants, plasticisers, flavourants, fillers, aqueous and non-aqueous solvents and combinations thereof.
  • Suitable extrinsic binders for inclusion in sheets or webs of homogenised tobacco material for use in the aerosol-generating substrate include, but are not limited to: gums such as, for example, guar gum, xanthan gum, arabic gum and locust bean gum; cellulosic binders such as, for example, hydroxypropyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose and ethyl cellulose; polysaccharides such as, for example, starches, organic acids, such as alginic acid, conjugate base salts of organic acids, such as sodium-alginate, agar and pectins; and combinations thereof.
  • gums such as, for example, guar gum, xanthan gum, arabic gum and locust bean gum
  • cellulosic binders such as, for example, hydroxypropyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose and ethyl
  • non-tobacco fibres for inclusion in sheets or webs of homogenised tobacco material for use in the aerosol-generating substrate include, but are not limited to: cellulose fibres; soft-wood fibres; hard-wood fibres; jute fibres and combinations thereof.
  • non-tobacco fibres Prior to inclusion in sheets of homogenised tobacco material for use in the aerosol-generating substrate, non-tobacco fibres may be treated by suitable processes known in the art including, but not limited to: mechanical pulping; refining; chemical pulping; bleaching; sulphate pulping; and combinations thereof.
  • the sheets or webs of homogenised tobacco material comprise an aerosol former.
  • aerosol former describes any suitable known compound or mixture of compounds that, in use, facilitates formation of an aerosol and that is substantially resistant to thermal degradation at the operating temperature of the aerosol-generating article.
  • Suitable aerosol-formers include, but are not limited to: polyhydric alcohols, such as propylene glycol, triethylene glycol, 1,3-butanediol and glycerine; esters of polyhydric alcohols, such as glycerol mono-, di- or triacetate; and aliphatic esters of mono-, di- or polycarboxylic acids, such as dimethyl dodecanedioate and dimethyl tetradecanedioate.
  • polyhydric alcohols such as propylene glycol, triethylene glycol, 1,3-butanediol and glycerine
  • esters of polyhydric alcohols such as glycerol mono-, di- or triacetate
  • aliphatic esters of mono-, di- or polycarboxylic acids such as dimethyl dodecanedioate and dimethyl tetradecanedioate.
  • Preferred aerosol formers are polyhydric alcohols or mixtures thereof, such as propylene glycol, triethylene glycol, 1,3-butanediol and, most preferred, glycerine.
  • the sheets or webs of homogenised tobacco material may comprise a single aerosol former.
  • the sheets or webs of homogenised tobacco material may comprise a combination of two or more aerosol formers.
  • the sheets or webs of homogenised tobacco material have an aerosol former content of greater than 10 percent on a dry weight basis.
  • the sheets or webs of homogenised tobacco material have an aerosol former content of greater than 12 percent on a dry weight basis. More preferably, the sheets or webs of homogenised tobacco material have an aerosol former content of greater than 14 percent on a dry weight basis. Even more preferably the sheets or webs of homogenised tobacco material have an aerosol former content of greater than 16 percent on a dry weight basis.
  • the sheets of homogenised tobacco material may have an aerosol former content of between approximately 10 percent and approximately 30 percent on a dry weight basis.
  • the sheets or webs of homogenised tobacco material have an aerosol former content of less than 25 percent on a dry weight basis.
  • the sheets of homogenised tobacco material have an aerosol former content of approximately 20 percent on a dry weight basis.
  • Sheets or webs of homogenised tobacco for use in the aerosol-generating article of the present invention may be made by methods known in the art, for example the methods disclosed in International patent application WO-A-2012/164009 A2 .
  • sheets of homogenised tobacco material for use in the aerosol-generating article are formed from a slurry comprising particulate tobacco, guar gum, cellulose fibres and glycerine by a casting process.
  • homogenised tobacco material in a rod for use in an aerosol-generating article may include a plurality of stacked sheets of homogenised tobacco material, a plurality of elongate tubular elements formed by winding strips of homogenised tobacco material about their longitudinal axes, etc.
  • the rod of aerosol-generating substrate may comprise a non-tobacco-based, nicotine-bearing material, such as a sheet of sorbent non-tobacco material loaded with nicotine (for example, in the form of a nicotine salt) and an aerosol-former. Examples of such rods are described in the international application WO-A-2015/052652 .
  • the rod of aerosol-generating substrate may comprise a non-tobacco plant material, such as an aromatic non-tobacco plant material.
  • the aerosol-generating substrate is preferably circumscribed by a wrapper.
  • the wrapper may be formed of a porous or non-porous sheet material.
  • the wrapper may be formed of any suitable material or combination of materials.
  • the wrapper is a paper wrapper.
  • the mouthpiece segment comprises a plug of filtration material capable of removing particulate components, gaseous components or a combination.
  • Suitable filtration materials are known in the art and include, but are not limited to: fibrous filtration materials such as, for example, cellulose acetate tow, viscose fibres, polyhydroxyalkanoates (PHA) fibres, polylactic acid (PLA) fibres and paper; adsorbents such as, for example, activated alumina, zeolites, molecular sieves and silica gel; and combinations thereof.
  • the plug of filtration material may further comprise one or more aerosol-modifying agent.
  • Suitable aerosol-modifying agents are known in the art and include, but are not limited to, flavourants such as, for example, menthol.
  • the mouthpiece may further comprise a mouth end recess downstream of the plug of filtration material.
  • the mouthpiece may comprise a hollow tube arranged in longitudinal alignment with, and immediately downstream of the plug of filtration material, the hollow tube forming a cavity at the mouth end that is open to the outer environment at the downstream end of the mouthpiece and of the aerosol-generating article.
  • a length of the mouthpiece is preferably at least about 4 millimetres, more preferably at least about 6 millimetres, even more preferably at least about 8 millimetres.
  • a length of the mouthpiece is preferably less than 25 millimetres, more preferably less than 20 millimetres, even more preferably less than 15 millimetres.
  • a length of the mouthpiece is from about 4 millimetres to about 25 millimetres, more preferably from about 6 millimetres to about 20 millimetres.
  • a length of the mouthpiece is about 7 millimetres.
  • a length of the mouthpiece is about 12 millimetres.
  • the hollow tubular segment is preferably an annular tube delimiting and defining an air gap within the aerosol-generating article.
  • the hollow tubular segment provides a chamber for the volatilised aerosol components released upon heating the aerosol-generating substrate to accumulate and flow in. As described briefly above, this chamber extends longitudinally all the way to an upstream end of the mouthpiece. This means that no intermediate element is provided between the hollow tubular segment and the mouthpiece, and that when the aerosol flowing through the aerosol-generating article reaches the downstream end of the hollow tubular segment, the aerosol flowing through the aerosol-generating article effectively also reaches the upstream end of the mouthpiece. In more detail, the aerosol flowing through the aerosol-generating article generally reaches the upstream end of the segment of filtration material of the mouthpiece.
  • the hollow tubular segment maintains the rod of aerosol-generating substrate at a predetermined distance from the mouthpiece and provides an elongate airflow conduit for the aerosol to form and flow towards the mouthpiece.
  • a thermal gradient is established along this airflow conduit.
  • a temperature differential is provided, such that a temperature of the volatilised aerosol components entering the hollow tubular segment at the upstream end is greater than a temperature of the volatilised aerosol components exiting the hollow tubular segment at the downstream end (that is, the upstream end of the mouthpiece).
  • the hollow tubular segment is required to withstand any axial compressive load or bending moment that may be applied on the hollow tubular segment during manufacture of the aerosol-generating article. Further, the hollow tubular segment is required to impart structural strength to the aerosol-generating article, such that it can easily be handled by the consumer and inserted into an aerosol-generating device for use. On the other hand, it is desirable that the overall volume of the chamber internally defined by the hollow tubular element is as large as possible, so as to favour the formation of aerosol and enhance the delivery of aerosol to the consumer.
  • an equivalent internal diameter of the hollow tubular segment is at least about 5 millimetres.
  • the term "equivalent internal diameter” is used herein to denote the diameter of a circle having the same surface area of a cross-section of the airflow conduit internally defined by the hollow tubular segment.
  • a cross-section of the airflow conduit may have any suitable shape.
  • a circular cross-section is preferred - that is, the hollow tubular segment is effectively a cylindrical tube. In that case, the equivalent internal diameter of the hollow tubular segment effectively coincides with the internal diameter of the cylindrical tube.
  • an equivalent internal diameter of the hollow tubular segment is at least about 5.25 millimetres, even more preferably at least about 5.5 millimetres. In some embodiments, an equivalent internal diameter of the hollow tubular segment is at least about 6 millimetres or at least about 6.5 millimetres or at least about 7 millimetres.
  • an equivalent internal diameter of the hollow tubular segment is preferably less than about 10 millimetres. More preferably, an equivalent internal diameter of the hollow tubular segment is less than about 9.5 millimetres, even more preferably less than 9 millimetres.
  • the equivalent internal diameter of the hollow tubular segment is measured at the location of the ventilation zone.
  • the equivalent internal diameter of the hollow tubular segment is substantially constant along the length of the hollow tubular segment. In other embodiments, the equivalent internal diameter of the hollow tubular segment may vary along the length of the hollow tubular segment.
  • aerosol-generating articles in accordance with the invention that comprise a hollow tubular segment having an equivalent internal diameter within the ranges described above could provide particularly satisfactory values of aerosol delivery.
  • aerosol stream flowing along a hollow tubular segment having an equivalent internal diameter falling within the ranges described above is caused to flow at a relatively low speed when the incoming flow of cooler ventilation air is received into and mixed with the aerosol stream. Because the aerosol stream advances relatively slowly along the hollow tubular segment, the favourable impact of cooling on aerosol nucleation is expected to be maximised under such conditions.
  • an equivalent internal diameter of the hollow tubular segment is substantially constant along the length of the hollow tubular segment.
  • the cross-sectional surface area of the hollow tubular segment may vary along the length of the hollow tubular segment.
  • the equivalent internal diameter is measured at the location of the ventilation zone.
  • a thickness of a peripheral wall of the hollow tubular segment is less than 1.5 millimetre. More preferably, the thickness of the peripheral wall of the hollow tubular segment is less than 1250 micrometres, even more preferably less than 1000 micrometres, most preferably less than 900 micrometres. In particularly preferred embodiments, the thickness of the peripheral wall of the hollow tubular segment is less than 800 micrometres.
  • the thickness of the peripheral wall of the hollow tubular segment is at least about 100 micrometres. Preferably, the thickness of the peripheral wall of the hollow tubular segment is at least about 200 micrometres.
  • aerosol-generating articles in accordance with the present invention comprise a ventilation zone at a location along the hollow tubular segment.
  • the ventilation zone is provided at a location less than about 18 millimetres from an upstream end of the hollow tubular segment.
  • a distance between the ventilation zone and an upstream end of the hollow tubular segment is less than about 15 millimetres. Even more preferably, a distance between the ventilation zone and upstream end of the hollow tubular segment is less than about 10 millimetres.
  • a distance between the ventilation zone and an upstream end of the hollow tubular segment is preferably at least 2 millimetres. More preferably, a distance between the ventilation zone and an upstream end of the hollow tubular segment is at least about 4 millimetres. Even more preferably, a distance between the ventilation zone and an upstream end of the hollow tubular segment is at least about 6 millimetres.
  • the ventilation zone is provided at a location along the hollow tubular segment at least 2 millimetres from the upstream end of the mouthpiece.
  • the ventilation zone is provided at a location along the hollow tubular segment at least 4 millimetres from the upstream end of the mouthpiece. Even more preferably, the ventilation zone is provided at a location along the hollow tubular segment at least 6 millimetres from the upstream end of the mouthpiece.
  • a ratio between the distance between the ventilation zone and an upstream end of the hollow tubular segment and an equivalent internal diameter of the hollow tubular segment at the location of the ventilation zone is less than 4.
  • a ratio between the distance between the ventilation zone and an upstream end of the hollow tubular segment and an equivalent internal diameter of the hollow tubular segment at the location of the ventilation zone is less than 3.5.
  • a ratio between the distance between the ventilation zone and an upstream end of the hollow tubular segment and an equivalent internal diameter of the hollow tubular segment at the location of the ventilation zone is less than 3.
  • a ratio between the distance between the ventilation zone and an upstream end of the hollow tubular segment and an equivalent internal diameter of the hollow tubular segment at the location of the ventilation zone is less than 2.5.
  • a ratio between the distance between the ventilation zone and an upstream end of the hollow tubular segment and an equivalent internal diameter of the hollow tubular segment at the location of the ventilation zone is less than 2, more preferably less than 1.5, even more preferably less than 1.2.
  • the ventilation zone is provided at a location along the hollow tubular segment at least 10 millimetres from a downstream end of the mouthpiece segment. More preferably, the ventilation zone is provided at a location along the hollow tubular segment at least 12 millimetres from a downstream end of the mouthpiece segment. Even more preferably, the ventilation zone is provided at a location along the hollow tubular segment at least 15 millimetres from a downstream end of the mouthpiece segment. This is advantageous in that is ensures that, during use, the ventilation zone is not occluded by the consumer's lips.
  • the ventilation zone is preferably at a location along the hollow tubular segment less than 25 millimetres from a downstream end of the mouthpiece segment. More preferably, the ventilation zone is at a location along the hollow tubular segment less than 20 millimetres from a downstream end of the mouthpiece segment. This advantageously ensures that during use, when the aerosol-generating article is received within a heating chamber of an electrically heated aerosol-generating device, the ventilation zone is effectively at a location along the hollow tubular segment that projects outside of the heating chamber, such that external cooling air can easily be drawn into the hollow tubular segment.
  • the ventilation zone is provided at a location along the hollow tubular segment from about 10 millimetres to about 25 millimetres from a downstream end of the mouthpiece segment, more preferably from about 12 millimetres to about 20 millimetres from a downstream end of the mouthpiece segment. In an exemplary embodiment, the ventilation zone is provided at a location along the hollow tubular segment 18 millimetres from the downstream end of the mouthpiece segment. In another exemplary embodiment, the ventilation zone is provided at a location along the hollow tubular segment 13 millimetres from the downstream end of the mouthpiece segment.
  • the aerosol-generating article may typically have a ventilation level of at least about 10 percent, preferably at least about 20 percent.
  • the aerosol-generating article has a ventilation level of at least about 30 percent. More preferably, the aerosol-generating article has a ventilation level of at least about 35 percent. In addition, or as an alternative, the aerosol-generating article preferably has a ventilation level of less than about 60 percent. More preferably, the aerosol-generating article has a ventilation level of less than about 50 percent. In particularly preferred embodiments, the aerosol-generating article has a ventilation level from about 30 percent to about 60 percent. More preferably, the aerosol-generating article has a ventilation level from about 35 percent to about 50 percent. In some particularly preferred embodiments, the aerosol-generating article has a ventilation level of about 40 percent.
  • the inventors have found that the temperature drop caused by the admission of cooler, external air into the hollow tubular segment via the ventilation zone may have an advantageous effect on the nucleation and growth of aerosol particles.
  • Formation of an aerosol from a gaseous mixture containing various chemical species depends on a delicate interplay between nucleation, evaporation, and condensation, as well as coalescence, all the while accounting for variations in vapour concentration, temperature, and velocity fields.
  • the so-called classical nucleation theory is based on the assumption that a fraction of the molecules in the gas phase are large enough to stay coherent for long times with sufficient probability (for example, a probability of one half).
  • These molecules represent some kind of a critical, threshold molecule clusters among transient molecular aggregates, meaning that, on average, smaller molecule clusters are likely to disintegrate rather quickly into the gas phase, while larger clusters are, on average, likely to grow.
  • Such critical cluster is identified as the key nucleation core from which droplets are expected to grow due to condensation of molecules from the vapour. It is assumed that virgin droplets that just nucleated emerge with a certain original diameter, and then may grow by several orders of magnitude. This is facilitated and may be enhanced by rapid cooling of the surrounding vapour, which induces condensation. In this connection, it helps to bear in mind that evaporation and condensation are two sides of one same mechanism, namely gas-liquid mass transfer. While evaporation relates to net mass transfer from the liquid droplets to the gas phase, condensation is net mass transfer from the gas phase to the droplet phase. Evaporation (or condensation) will make the droplets shrink (or grow), but it will not change the number of droplets.
  • the temperature and rate of cooling can play a critical role in determining how the system responds.
  • different cooling rates may lead to significantly different temporal behaviours as concerns the formation of the liquid phase (droplets), because the nucleation process is typically nonlinear.
  • nucleation burst a strong, short-lived increase in this growth.
  • This nucleation burst would appear to be more significant at lower temperatures.
  • higher cooling rates may favour an earlier onset of nucleation.
  • a reduction of the cooling rate would appear to have a favourable effect on the final size that the aerosol droplets ultimately reach.
  • the rapid cooling induced by the admission of external air into the hollow tubular segment via the ventilation zone can be favourably used to favour nucleation and growth of aerosol droplets.
  • the admission of external air into the hollow tubular segment has the immediate drawback of diluting the aerosol stream delivered to the consumer.
  • the inventors have surprisingly found that the diluting effect on the aerosol - which can be assessed by measuring, in particular, the effect on the delivery of glycerin included in the aerosol-generating substrate as the aerosol former - is advantageously minimised when the ventilation level is between 30 percent and 50 percent. In particular, ventilation levels between 35 percent and 42 percent have been found to lead to particularly satisfactory values of glycerin delivery.
  • the inventors have found that in aerosol-generating articles in accordance with the invention the cooling and diluting effect caused by the admission of ventilation air at the location along the conduit defined by the hollow tubular segment described above has a surprising reducing effect on the generation and delivery of phenol-containing species.
  • the ventilation zone may comprise one or more rows of perforations formed through the peripheral wall of the hollow tubular segment.
  • the ventilation zone comprises only one rows of perforations. This is understood to be advantageous in that, by concentrating the cooling effect brought about by ventilation over a short portion of the cavity defined by the hollow tube segment, it may be possible to further enhance aerosol nucleation. This is because a faster and more drastic cooling of the stream of volatilised species is expected to particularly favour the formation of new nuclei of aerosol particles.
  • the one or more rows of perforations are arranged circumferentially around the wall of the hollow tube.
  • the ventilation zone comprises two or more rows of perforations formed through the peripheral wall of the hollow tubular segment
  • the rows are longitudinally spaced apart from one another along the hollow tubular segment.
  • adjacent rows of perforations may be longitudinally spaced from one another by a distance of between about 0.25 millimetres and 0.75 millimetres.
  • An equivalent diameter of at least one of the ventilation perforations is preferably at least about 100 micrometres.
  • an equivalent diameter of at least one of the ventilation perforations is at least about 150 micrometres. Even more preferably, an equivalent diameter of at least one of the ventilation perforations is at least about 200 micrometres.
  • an equivalent diameter of at least one of the ventilation perforations is preferably less than about 500 micrometres. More preferably, an equivalent diameter of at least one of the ventilation perforations is less than about 450 micrometres. Even more preferably, an equivalent diameter of at least one of the ventilation perforations is less than about 400 micrometres.
  • equivalent diameter is used herein to denote the diameter of a circle having the same surface area of a cross-section of the ventilation perforation.
  • a cross-section of the ventilation perforations may have any suitable shape. However, circular ventilation perforations are preferred.
  • the ventilation perforations may be of uniform size. As an alternative, the ventilation perforations may vary in size. By varying the number and size of the ventilation perforations, it is possible to adjust the amount of external air admitted into the hollow tubular segment when the consumer draws on the mouthpiece of the aerosol-generating article during use. As such, it is advantageously possible to adjust the ventilation level of the aerosol-generating article.
  • the ventilation perforations can be formed using any suitable technique, for example by laser technology, mechanical perforation of the hollow tubular segment as part of the aerosol-generating article or pre-perforation of the hollow tubular segment before it is combined with the other elements to form the aerosol-generating article.
  • the ventilation perforations are formed by online laser perforation.
  • a length of the hollow tubular segment is preferably at least about 10 millimetres. More preferably, a length of the hollow tubular segment is at least about 15 millimetres. In addition, or as an alternative, a length of the hollow tubular segment is preferably less than about 30 millimetres. More preferably, a length of the hollow tubular segment is less than about 25 millimetres. Even more preferably, a length of the hollow tubular segment is less than about 20 millimetres. In some preferred embodiments, a length of the hollow tubular segment is from about 10 millimetres to about 30 millimetres, more preferably from about 12 millimetres to about 25 millimetres, even more preferably from about 15 millimetres to about 20 millimetres. By way of example, in a particularly preferred embodiment the length of the hollow tubular segment is about 18 millimetres. In another particularly preferred embodiment the length of the hollow tubular segment is about 13 millimetres.
  • An overall length of an aerosol-generating article in accordance with the invention is preferably at least about 40 millimetres.
  • an overall length of the aerosol-generating article in accordance with the invention is preferably less than about 70 millimetres, more preferably less than 60 millimetres, even more preferably less than 50 millimetres.
  • an overall length of the aerosol-generating article is from about 40 millimetres to about 70 millimetres. In an exemplary embodiment, an overall length of the aerosol-generating article is about 45 millimetres.
  • the hollow tubular segment is preferably formed from a substantially air-impervious material. Accordingly, air and aerosol particles drawn through the hollow tubular segment are forced to flow through the hollow tubular segment from its upstream end to its downstream end, but cannot flow across the peripheral wall of the hollow tubular element.
  • the hollow tubular segment comprises a wrapper, the wrapper also circumscribing the rod and the mouthpiece segment.
  • a wrapper having a thickness falling within the ranges described above is used for circumscribing and connecting the rod of aerosol-generating substrate and the mouthpiece segment, the wrapper effectively forming the peripheral wall of the hollow tubular element.
  • one such combining wrapper connecting the rod and the mouthpiece segment may have a basis weight of less at least about 70 grams/square metre (gsm).
  • one such combining wrapper connecting the rod and the mouthpiece segment has a basis weight of at least about 80 grams/square metre, more preferably at least about 90 grams/square metre.
  • the combining wrapper connecting the rod and the mouthpiece segment has a basis weight of at least about 110 grams/square metre, more preferably at least about 130 grams/square metre.
  • the hollow tubular segment comprises a tube formed from a polymeric material or a cellulosic material, the heated aerosol-generating article further comprising a wrapper circumscribing the rod, the tube and the mouthpiece segment.
  • the cellulosic material may comprise paper or cardboard or a mixture thereof.
  • the hollow tubular segment can comprise a tube formed from an extruded plastic tube.
  • the hollow tubular segment may comprise a tube formed from a plurality of overlapping paper layers, such as a plurality of parallel wound paper layers or a plurality of spirally wound paper layers. Forming tube from a plurality of overlapping paper layers can help to further improve resistance to collapse or deformation.
  • the tube comprises two or more paper layers.
  • the tube preferably comprises fewer than eleven paper layers.
  • One such tube may be made air-impervious by using a substantially air-impermeable paper.
  • substantially air-impermeable paper is used herein to denote a paper having an air permeability of less than about 20 CORESTA units, more preferably less than about 10 CORESTA units, most preferably less than about 5 CORESTA units as measured in accordance with ISO 2965:2009.
  • adjacent paper layers in the tube may be held together with an adhesive imparting sealing properties to the tube.
  • Suitable materials for forming the tube comprise, but are not limited to, cellulose acetate, stiff paper (that is, paper having a basis weight of at least 90 grams/square metre), polymeric films, such as cellulosic films, and cardboard.
  • a ratio between a weight of the hollow tubular segment and a volume of the internal cavity defined by the hollow tubular segment is preferably less than 1 milligram/cubic millimetre. More preferably, a ratio between a weight of the hollow tubular segment and a volume of the internal cavity defined by the hollow tubular segment is less than 0.5 milligrams/cubic millimetres.
  • a ratio between a weight of the hollow tubular segment and a volume of the internal cavity defined by the hollow tubular segment is less than 0.25 milligrams/cubic millimetres. More preferably, a ratio between a weight of the hollow tubular segment and a volume of the internal cavity defined by the hollow tubular segment is less than 0.2 milligrams/cubic millimetres. Even more preferably, a ratio between a weight of the hollow tubular segment and a volume of the internal cavity defined by the hollow tubular segment is less than 0.1 milligrams/cubic millimetres.
  • the volume of the cavity is advantageously maximised, whilst ensuring that the hollow tubular segment contributes to the overall structural strength of the aerosol-generating article and effectively maintains the rod of aerosol-generating substrate spaced from the mouthpiece.
  • the hollow tubular segment has an internal equivalent diameter of 7 millimetres and is formed from a wrapper having a basis weight of 110 gsm, with a weight of 2.5 milligram/millimetre.
  • the ratio between a weight of the hollow tubular segment and a volume of the internal cavity defined by the hollow tubular segment is about 0.065 milligrams/cubic millimetres.
  • a hollow tubular segment has an internal equivalent diameter of 5.3 millimetres may be provided as a cellulose acetate tube with a weight of 9.5 milligram/millimetre.
  • the ratio between a weight of the hollow tubular segment and a volume of the internal cavity defined by the hollow tubular segment is about 0.43 milligrams/cubic millimetres.
  • the overall RTD of the article depends essentially on the RTD of the rod and on the RTD of the mouthpiece, as the hollow tubular segment is substantially empty and, as such, substantially only marginally contribute to the overall RTD.
  • the hollow tubular segment may be adapted to generate a RTD in the range of approximately 0 millimetre H 2 O (about 00 Pa) to approximately 20 m millimetres H 2 O (about 200 Pa).
  • the hollow tubular segment is adapted to generate a RTD between approximately 0 millimetres H 2 O (about 00 Pa) to approximately 10 millimetres H 2 O (about 100 Pa).
  • the aerosol-generating article preferably has an overall RTD of less than about 90 millimetres H 2 O (about 900 Pa). More preferably, the aerosol-generating article has an overall RTD of less than about 80 millimetres H 2 O (about 800 Pa). Even more preferably, the aerosol-generating article has an overall RTD of less than about 70 millimetres H 2 O (about 700 Pa).
  • the aerosol-generating article preferably has an overall RTD of at least about 30 millimetres H 2 O (about 300 Pa). More preferably the aerosol-generating article has an overall RTD of at least about 40 millimetres H 2 O (about 400 Pa). Even more preferably, the aerosol-generating article has an overall RTD of at least about 50 millimetres H 2 O (about 500 Pa).
  • the RTD of the aerosol-generating article may be assessed as the negative pressure that has to be applied, under test conditions as defined in ISO 3402, to downstream end of the mouthpiece in order to sustain a steady volumetric flow of air of 17.5 ml/s through the mouthpiece.
  • the values of RTD listed above are intended to be measured on the aerosol-generating article on its own (that is, prior to inserting the article into an aerosol-generating device) without blocking the perforations of the ventilation zone.
  • an additional filter section may be included in the aerosol-generating article.
  • such additional filter section may be included between the rod of aerosol-generating substrate and the hollow tubular segment.
  • such additional filter section comprises a filtration material such as, for example, cellulose acetate.
  • the length of the additional filter section is between about 4 millimetres and about 8 millimetres, preferably, between about 5 millimetres and about 7 millimetres.
  • the aerosol-generating article in accordance with the invention may comprise an additional support element arranged between, and in longitudinal alignment with, the rod of aerosol-generating substrate and the hollow tubular segment.
  • the support element is preferably provided immediately downstream of the rod and immediately upstream of the hollow tubular element.
  • the support element is provided as a tubular element.
  • the support element may be formed from any suitable material or combination of materials.
  • the support element may be formed from one or more materials selected from the group consisting of: cellulose acetate; cardboard; crimped paper, such as crimped heat resistant paper or crimped parchment paper; and polymeric materials, such as low density polyethylene (LDPE).
  • LDPE low density polyethylene
  • the support element is provided as a hollow cellulose acetate tube.
  • the support element preferably has an external diameter that is about equal to the external diameter of the aerosol-generating article.
  • the support element may have an external diameter of between about 5 millimetres and about 12 millimetres, for example of between about 5 millimetres and about 10 millimetres or of between about 6 millimetres and about 8 millimetres. In a preferred embodiment, the support element has an external diameter of about 7.2 millimetres.
  • a peripheral wall of the support element may have a thickness of at least 1 millimetre, preferably at least about 1.5 millimetres, more preferably at least about 2 millimetres.
  • the support element may have a length of between about 5 millimetres and about 15 millimetres. In an preferred embodiment, the support element has a length of about 8 millimetres.
  • a user may be required to apply some force in order to overcome the resistance of the aerosol-forming substrate of the aerosol-generating article to insertion of the heating element of the aerosol-generating device. This may damage one or both of the aerosol-generating article and the heating element of the aerosol-generating device.
  • the application of force during insertion of the heating element of the aerosol-generating device into the aerosol-forming substrate of the aerosol-generating article may displace the aerosol-forming substrate within the aerosol-generating article.
  • the support element is advantageously configured to resist downstream movement of the aerosol-forming substrate during insertion of the heating element of the aerosol-generating device into the aerosol-forming substrate of aerosol-generating article.
  • a distance between the ventilation zone and an upstream end of the aerosol-generating article is less than about 50 millimetres. More preferably, a distance between the ventilation zone and an upstream end of the aerosol-generating article is less than about 45 millimetres. Even more preferably, a distance between the ventilation zone and an upstream end of the aerosol-generating article is less than about 40 millimetres.
  • a distance between the ventilation zone and an upstream end of the aerosol-generating article is preferably at least about 12 millimetres. More preferably, a distance between the ventilation zone and an upstream end of the aerosol-generating article is preferably at least about 15 millimetres. Even more preferably, a distance between the ventilation zone and an upstream end of the aerosol-generating article is preferably at least about 20 millimetres. In particularly preferred embodiments, a distance between the ventilation zone and an upstream end of the aerosol-generating article is preferably at least about 25 millimetres.
  • a distance between the ventilation zone and a downstream end of the rod of aerosol-generating substrate is at least about 2 millimetres. More preferably, a distance between the ventilation zone and a downstream end of the rod of aerosol-generating substrate is at least about 5 millimetres. Even more preferably, a distance between the ventilation zone and a downstream end of the rod of aerosol-generating substrate is at least about 10 millimetres. In some, particularly preferred embodiments, a distance between the ventilation zone and a downstream end of the rod of aerosol-generating substrate may be at least about 15 millimetres.
  • a distance between the ventilation zone and a downstream end of the rod of aerosol-generating substrate is preferably less than about 35 millimetres. More preferably, a distance between the ventilation zone and a downstream end of the rod of aerosol-generating substrate is less than about 30 millimetres. Even more preferably, a distance between the ventilation zone and a downstream end of the rod of aerosol-generating substrate is less than about 25 millimetres.
  • the ventilation zone divides the cavity internally defined by the hollow tubular segment into an upstream sub-cavity, which extends longitudinally from an upstream end of the hollow tubular segment to the location of the ventilation zone, and a downstream sub-cavity, which extends longitudinally from the location of the ventilation zone to the downstream end of the hollow tubular segment.
  • an upstream sub-cavity which extends longitudinally from an upstream end of the hollow tubular segment to the location of the ventilation zone
  • a downstream sub-cavity which extends longitudinally from the location of the ventilation zone to the downstream end of the hollow tubular segment.
  • the aerosol stream and the ventilation air rapidly mix up, which causes a quick cooling of the volatilised species of the aerosol stream and so favours the nucleation of new aerosol particles and the growth of already existing aerosol particles as the aerosol advances towards the mouthpiece.
  • a ratio between a length of the upstream cavity and a length of the downstream cavity is less than 1.5. More preferably, a ratio between a length of the upstream cavity and a length of the downstream cavity is less than 1. Even more preferably, a ratio between a length of the upstream cavity and a length of the downstream cavity is less than 0.67.
  • a ratio between a length of the upstream cavity and a length of the downstream cavity is preferably at least about 0.15. More preferably, a ratio between a length of the upstream cavity and a length of the downstream cavity is preferably at least about 0.2. Even more preferably, a ratio between a length of the upstream cavity and a length of the downstream cavity is preferably at least about 0.35.
  • the ventilation zone divides the aerosol-generating article in two sections, upstream and downstream of the location of the ventilation zone, respectively.
  • a ratio between a length of the upstream section of the aerosol-generating article and a length of the downstream section of the aerosol-generating article is less than 2.5. More preferably, a ratio between a length of the upstream section of the aerosol-generating article and a length of the downstream section of the aerosol-generating article is less than 2. Even more preferably, a ratio between a length of the upstream section of the aerosol-generating article and a length of the downstream section of the aerosol-generating article is less than 1.5. In particularly preferred embodiments, a ratio between a length of the upstream section of the aerosol-generating article and a length of the downstream section of the aerosol-generating article is less than 1.
  • a ratio between a length of the upstream section of the aerosol-generating article and a length of the downstream section of the aerosol-generating article is preferably at least about 0.25. More preferably, a ratio between a length of the upstream section of the aerosol-generating article and a length of the downstream section of the aerosol-generating article is at least about 0.33. Even more preferably, a ratio between a length of the upstream section of the aerosol-generating article and a length of the downstream section of the aerosol-generating article is at least about 0.5.
  • the invention may also provide a pack comprising ten or more aerosol-generating articles as described above, wherein a difference between an RTD of the aerosol-generating article having the highest RTD among the at least ten aerosol-generating articles and an RTD of the aerosol-generating article having the lowest RTD among the at least ten aerosol-generating articles is less than 10 mm H 2 O (about 100 Pascal).
  • the difference between an RTD of the aerosol-generating article having the highest RTD among the at least ten aerosol-generating articles and an RTD of the aerosol-generating article having the lowest RTD among the at least ten aerosol-generating articles is less than 9 mm H 2 O (about 90 Pascal, more preferably less than 8 mm H 2 O (about 80 Pascal), even more preferably less than 7 mm H 2 O (about 70 Pascal).
  • the aerosol-generating article 10 shown in Figure 1 comprises a rod of aerosol-generating substrate 12, a hollow cellulose acetate tube 14, a hollow tubular segment 16 and a mouthpiece segment 18. These four elements are arranged in end-to-end, longitudinal alignment and are circumscribed by a wrapper 20 to form the aerosol-generating article 10.
  • the aerosol-generating article 10 has a mouth end 22 and an upstream, distal end 24 located at the opposite end of the article to the mouth end 22.
  • the aerosol-generating article 10 shown in Figure 1 is particularly suitable for use with an electrically operated aerosol-generating device comprising a heater for heating the rod of aerosol-generating substrate.
  • the rod of aerosol-generating substrate 12 has a length of about 12 millimetres and a diameter of about 7 millimetres.
  • the rod 12 is cylindrical in shape and has a substantially circular cross-section.
  • the rod 12 comprises a gathered sheet of homogenised tobacco material.
  • the sheet of homogenised tobacco material comprises 10 percent by weight on a dry basis of glycerine.
  • the hollow cellulose acetate tube 14 has a length of about 8 millimetres and a thickness of 1 millimetre.
  • the mouthpiece segment 18 comprises a plug of cellulose acetate tow of 8 denier per filament and has a length of about 7 millimetres.
  • the hollow tubular segment 16 is provided as a cylindrical tube having a length of about 18 millimetres and a thickness of the tube wall is about 100 micrometres.
  • the hollow tubular segment 16 may for example be formed from a paper having a basis weight of 110 gsm and has a weight of 45 milligrams (that is, 2.5 milligrams/millimetre of length).
  • An equivalent internal diameter of the hollow tubular segment 16 is about 7 millimetres.
  • a volume of the cavity internally defined by the hollow tubular segment 16 is about 693 cubic millimetres.
  • a ratio between the weight of the hollow tubular segment and the volume of the internal cavity defined by the hollow tubular segment 16 is about 0.065.
  • the aerosol-generating article 10 comprises a ventilation zone 26 provided at about 5 millimetres from an upstream end of the mouthpiece segment 18.
  • the ventilation zone 26 is at about 12 millimetres from the downstream end of the aerosol-generating article, and about 13 millimetres from the upstream end of the hollow tubular segment.
  • FIG. 2 illustrates another example of an aerosol-generating article in accordance with the invention.
  • the aerosol-generating article 30 of Figure 2 has the same structure of the aerosol-generating article 10 of Figure 1 and differs from the aerosol-generating article 10 substantially only in the length of certain components, and will be described below only insofar as it differs from the aerosol-generating article 10.
  • the same reference numerals will be used, wherever possible, for corresponding components having the same structural or functional function.
  • the rod 12 and the hollow cellulose acetate tube 14 have the same length as in the aerosol-generating article 10 of Figure 1 .
  • the mouthpiece segment comprises a plug of cellulose acetate tow of 11 denier per filament and having a length of about 12 millimetres, and a hollow tubular segment 14 having a length of about 13 millimetres.
  • the ventilation zone 26 is provided at about 6 millimetres from the upstream end of the mouthpiece segment 18, and at about 7 millimetres from the upstream end of the hollow tubular segment. Thus, the ventilation zone 26 is at about 15 millimetres from a downstream end of the rod 12.
  • the hollow tubular segment 16 may for example be provided as a cylindrical tube of cellulose acetate having a length of about 18 millimetres and a peripheral wall thickness of about 1 millimetre, with a weight of 171 milligrams (that is, 9.5 milligrams/millimetre of length).
  • FIG. 3 illustrates yet another example of an aerosol-generating article in accordance with the invention.
  • the aerosol-generating article 40 of Figure 3 differs structurally from the aerosol-generating articles 10 of Figure 1 and 30 of Figure 2 in that it does not include a hollow cellulose acetate tube as a support element. Accordingly, the lengths of the three main components are also different. In the following the same reference numerals will be used, wherever possible, for corresponding components having the same structural or functional function.
  • the rod 12 has a length of about 12 millimetres
  • the hollow tubular segment 14 has a length of about 26 millimetres
  • the mouthpiece segment 18 comprises a plug of cellulose acetate tow has a length of about 12 millimetres and 11 denier per filament.
  • the ventilation zone 26 is provided at about 5 millimetres from the upstream end of the mouthpiece segment 18, and at about 21 millimetres from the upstream end of the hollow tubular segment, which in this embodiment coincides with the downstream end of the rod 12.
  • EXAMPLE 1 This experiment is performed to assess the effect of incorporation of a hollow tubular segment wherein a ventilation zone is provided at a location along the hollow tubular segment in accordance with the present invention. The experiment investigates the effect of the ventilation level on the delivery of nicotine and aerosol former (glycerin). A comparative measurement with a reference aerosol-generating article without ventilation is also provided.
  • Article A is an aerosol-generating article formed of: a rod of aerosol-generating substrate comprising a gathered sheet of homogenised tobacco material and about 18 percent on a dry weight basis of glycerin, the rod having a length of 12 millimetres; a support element in the form of a hollow cellulose acetate tube in alignment with and immediately downstream of the rod, the support element having a length of 8 millimetres; a hollow tubular segment in the form of a cardboard tube in alignment with and immediately downstream of the rod, the hollow tubular segment having a length of 13 millimetres; a mouthpiece segment of filtration material in alignment with and immediately downstream of the hollow tubular segment, the mouthpiece segment having a length of 12 millimetres.
  • a ventilation zone is provided at a location along the hollow tubular segment at 18 millimetres from a downstream end of the mouthpiece segment.
  • a level of ventilation of aerosol-generating article A is 30 percent.
  • Article B is a reference aerosol-generating article having the same structure of article A, but without the ventilation zone. Thus, a level of ventilation of aerosol-generating article B is 0 percent.
  • Nicotine and glycerin deliveries are measured by gas chromatography/time-of-flight mass spectrometry (GC/MS-TOF) on the nicotine and glycerin collected on a Cambridge filter pad. Runs were performed as described in example 1

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Medicinal Preparation (AREA)
  • Nozzles (AREA)
  • Cookers (AREA)
EP19832124.2A 2018-12-20 2019-12-20 Aerosol-generating article with ventilated hollow segment Active EP3752013B1 (en)

Priority Applications (1)

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EP22205871.1A EP4193851A1 (en) 2018-12-20 2019-12-20 Aerosol-generating article with ventilated hollow segment

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EP18214929 2018-12-20
PCT/EP2019/086801 WO2020128045A1 (en) 2018-12-20 2019-12-20 Aerosol-generating article with ventilated hollow segment

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EP (2) EP3752013B1 (zh)
JP (2) JP7531493B2 (zh)
KR (1) KR20210107039A (zh)
CN (1) CN113163853A (zh)
AU (1) AU2019408541A1 (zh)
BR (1) BR112021010712A2 (zh)
CA (1) CA3116957A1 (zh)
ES (1) ES2933688T3 (zh)
HU (1) HUE060424T2 (zh)
IL (1) IL283924B1 (zh)
LT (1) LT3752013T (zh)
MX (1) MX2021006883A (zh)
PH (1) PH12021550874A1 (zh)
PL (1) PL3752013T3 (zh)
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ZA (1) ZA202102097B (zh)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3945903B1 (en) * 2019-04-04 2023-05-03 Philip Morris Products S.A. Aerosol-generating article having a recessed supporting component
CN114113053B (zh) * 2020-08-31 2024-08-23 中国烟草总公司郑州烟草研究院 卷烟烟草段氧气含量检测装置及其检测方法
US20240074488A1 (en) * 2020-12-11 2024-03-07 Nicoventures Trading Limited Article for use in an aerosol provision system
EP4268629A4 (en) * 2020-12-24 2024-10-23 Japan Tobacco Inc CIGARETTE WITH HEATING WITHOUT COMBUSTION AND ELECTRICALLY HEATED TOBACCO PRODUCT
EP4062780A1 (en) * 2021-03-26 2022-09-28 Starker International Pte. Ltd. Jig for use with a heating device suitable for heating an aerosol generating substrate
CN113197340B (zh) * 2021-05-31 2022-02-11 云南中烟工业有限责任公司 一种具有自然透气功能的加热卷烟滤棒及包含其的加热卷烟
WO2023012921A1 (ja) * 2021-08-04 2023-02-09 日本たばこ産業株式会社 香味発生物品および喫煙システム
GB202115251D0 (en) * 2021-10-22 2021-12-08 Essentra Filter Products Dev Co Pte Ltd Paper tube
WO2023198764A1 (en) * 2022-04-12 2023-10-19 Philip Morris Products S.A. Aerosol-generating article with relatively short rod of aerosol-generating substrate
WO2024056682A1 (en) * 2022-09-12 2024-03-21 Philip Morris Products S.A. An aerosol-generating article comprising a high weight ratio of aerosol-forming substrate
WO2024156765A1 (en) * 2023-01-25 2024-08-02 Philip Morris Products S.A. Aerosol-generating article with low resistance to draw
WO2024201071A1 (en) * 2023-03-29 2024-10-03 Nicoventures Trading Limited An article, an aerosol provision system and a method for forming an article

Citations (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996032854A2 (en) 1995-04-20 1996-10-24 Philip Morris Products Inc. Cigarette and heater for use in an electrical smoking system
US5692525A (en) 1992-09-11 1997-12-02 Philip Morris Incorporated Cigarette for electrical smoking system
WO2008110934A2 (en) 2007-03-09 2008-09-18 Philip Morris Products S.A. Smoking article filter with annular restrictor and downstream ventilation
WO2011101164A1 (en) 2010-02-19 2011-08-25 Philip Morris Products S.A. Aerosol-generating substrate for smoking articles
WO2012164009A2 (en) 2011-05-31 2012-12-06 Philip Morris Products S.A. Rods for use in smoking articles
WO2013120849A1 (en) 2012-02-13 2013-08-22 Philip Morris Products S.A. Smoking article including dual heat-conducting elements
WO2013190036A1 (en) 2012-06-21 2013-12-27 Philip Morris Products S.A. Smoking article for use with an internal heating element
EP2783590A1 (en) 2011-12-21 2014-10-01 Japan Tobacco, Inc. Paper tube and flavor-suctioning tool using same
WO2014158051A1 (en) 2013-03-28 2014-10-02 Philip Morris Products S.A. Smoking article with a multiple cavity filter
WO2015082650A1 (en) 2013-12-05 2015-06-11 Philip Morris Products S.A. Heated aerosol generating article with air-flow barrier
CN104921296A (zh) 2015-06-25 2015-09-23 云南中烟工业有限责任公司 一种用于加热不燃烧型卷烟的复合嘴棒
WO2016156219A1 (en) 2015-03-27 2016-10-06 Philip Morris Products S.A. A paper wrapper for an electrically heated aerosol-generating article
WO2016156223A1 (en) 2015-03-27 2016-10-06 Philip Morris Products S.A. Smoking article with a mouth end cavity and ventilation
WO2016174141A1 (en) * 2015-04-30 2016-11-03 Philip Morris Products S.A. Aerosol-generating article comprising a detachable freshener delivery element with high resistance to draw
WO2017051034A1 (en) 2015-09-25 2017-03-30 Ltr Industries Reconstituted tobacco for devices that heat tobacco without burning it
WO2017198838A1 (en) 2016-05-20 2017-11-23 British American Tobacco (Investments) Limited Article for use in apparatus for heating smokable material
WO2017198876A1 (en) 2016-05-20 2017-11-23 British American Tobacco (Investments) Limited Filter for aerosol generating device
WO2017198837A1 (en) 2016-05-20 2017-11-23 British American Tobacco (Investments) Limited Article for use in apparatus for heating smokable material
KR20180088770A (ko) 2018-05-12 2018-08-07 썬전 다카베이프 테크 컴퍼니 리미티드 가열식 연무발생기
CN207912052U (zh) 2018-01-10 2018-09-28 广东中烟工业有限责任公司 一种低吸阻低截留非燃烧卷烟
EP3398460A1 (en) 2006-10-18 2018-11-07 R.J.Reynolds Tobacco Company Tobacco-containing smoking article
WO2020100872A1 (ja) 2018-11-14 2020-05-22 日本たばこ産業株式会社 フィルターセグメント、非燃焼加熱喫煙物品及び非燃焼加熱喫煙システム
WO2020100927A1 (ja) 2018-11-14 2020-05-22 日本たばこ産業株式会社 非燃焼加熱喫煙物品および非燃焼加熱喫煙システム

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5774493A (en) 1996-08-02 1998-06-30 General Electric Company Sequence constructions for delay-and-correlate transmitted reference signaling
PL2007233T3 (pl) * 2006-03-28 2020-03-31 Philip Morris Products S.A. Wyrób do palenia z ogranicznikiem
EP2625975A1 (en) 2012-02-13 2013-08-14 Philip Morris Products S.A. Aerosol-generating article having an aerosol-cooling element
AR089602A1 (es) * 2011-12-30 2014-09-03 Philip Morris Products Sa Articulo generador de aerosoles para usar con un dispositivo generador de aerosoles
HUE029516T2 (en) * 2012-01-03 2017-02-28 Philip Morris Products Sa Aerosol generating device and assembly with improved airflow
PL3041376T3 (pl) 2013-09-02 2019-12-31 Philip Morris Products S.A. Wyrób do palenia o nienakładających się, oddzielonych radialnie elementach przewodzących ciepło
ITBS20130143A1 (it) 2013-10-11 2015-04-12 Turboden Srl Separatore di olio da un fluido di lavoro per impianto orc
MX2016007083A (es) * 2013-12-05 2016-09-08 Philip Morris Products Sa Articulo generador de aerosol con trayectoria de flujo de aire de baja resistencia.
SG11201608795SA (en) * 2014-05-30 2016-11-29 Philip Morris Products Sa Smoking article with ventilated mouth end cavity
DE102015205768A1 (de) * 2015-03-31 2016-10-06 Hauni Maschinenbau Gmbh Verfahren zur Herstellung einer ersten Untereinheit eines HNB-Rauchartikels mit einem Stabkörper und einem daran angeordneten Hohlraum
TW201703660A (zh) * 2015-06-23 2017-02-01 菲利浦莫里斯製品股份有限公司 氣溶膠產生物件及製造氣溶膠產生物件之方法
EP3162228B1 (en) * 2015-10-28 2020-10-28 Fontem Holdings 1 B.V. Electronic smoking device
CN108367807B (zh) * 2015-12-09 2022-04-29 庞巴迪公司 翼身融合飞机
CN208192112U (zh) * 2018-05-12 2018-12-07 深圳市大咖威普科技有限公司 两用型卷烟

Patent Citations (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5692525A (en) 1992-09-11 1997-12-02 Philip Morris Incorporated Cigarette for electrical smoking system
WO1996032854A2 (en) 1995-04-20 1996-10-24 Philip Morris Products Inc. Cigarette and heater for use in an electrical smoking system
EP3398460A1 (en) 2006-10-18 2018-11-07 R.J.Reynolds Tobacco Company Tobacco-containing smoking article
WO2008110934A2 (en) 2007-03-09 2008-09-18 Philip Morris Products S.A. Smoking article filter with annular restrictor and downstream ventilation
WO2011101164A1 (en) 2010-02-19 2011-08-25 Philip Morris Products S.A. Aerosol-generating substrate for smoking articles
WO2012164009A2 (en) 2011-05-31 2012-12-06 Philip Morris Products S.A. Rods for use in smoking articles
EP2783590A1 (en) 2011-12-21 2014-10-01 Japan Tobacco, Inc. Paper tube and flavor-suctioning tool using same
WO2013120849A1 (en) 2012-02-13 2013-08-22 Philip Morris Products S.A. Smoking article including dual heat-conducting elements
WO2013190036A1 (en) 2012-06-21 2013-12-27 Philip Morris Products S.A. Smoking article for use with an internal heating element
WO2014158051A1 (en) 2013-03-28 2014-10-02 Philip Morris Products S.A. Smoking article with a multiple cavity filter
WO2015082650A1 (en) 2013-12-05 2015-06-11 Philip Morris Products S.A. Heated aerosol generating article with air-flow barrier
WO2016156223A1 (en) 2015-03-27 2016-10-06 Philip Morris Products S.A. Smoking article with a mouth end cavity and ventilation
WO2016156219A1 (en) 2015-03-27 2016-10-06 Philip Morris Products S.A. A paper wrapper for an electrically heated aerosol-generating article
WO2016174141A1 (en) * 2015-04-30 2016-11-03 Philip Morris Products S.A. Aerosol-generating article comprising a detachable freshener delivery element with high resistance to draw
CN104921296A (zh) 2015-06-25 2015-09-23 云南中烟工业有限责任公司 一种用于加热不燃烧型卷烟的复合嘴棒
WO2017051034A1 (en) 2015-09-25 2017-03-30 Ltr Industries Reconstituted tobacco for devices that heat tobacco without burning it
WO2017198838A1 (en) 2016-05-20 2017-11-23 British American Tobacco (Investments) Limited Article for use in apparatus for heating smokable material
WO2017198876A1 (en) 2016-05-20 2017-11-23 British American Tobacco (Investments) Limited Filter for aerosol generating device
WO2017198837A1 (en) 2016-05-20 2017-11-23 British American Tobacco (Investments) Limited Article for use in apparatus for heating smokable material
CN207912052U (zh) 2018-01-10 2018-09-28 广东中烟工业有限责任公司 一种低吸阻低截留非燃烧卷烟
KR20180088770A (ko) 2018-05-12 2018-08-07 썬전 다카베이프 테크 컴퍼니 리미티드 가열식 연무발생기
WO2020100872A1 (ja) 2018-11-14 2020-05-22 日本たばこ産業株式会社 フィルターセグメント、非燃焼加熱喫煙物品及び非燃焼加熱喫煙システム
WO2020100927A1 (ja) 2018-11-14 2020-05-22 日本たばこ産業株式会社 非燃焼加熱喫煙物品および非燃焼加熱喫煙システム
EP3881687A1 (en) 2018-11-14 2021-09-22 Japan Tobacco Inc. Filter segment, non-combustion heating type smoking article and non-combustion heating type smoking system
EP3881699A1 (en) 2018-11-14 2021-09-22 Japan Tobacco Inc. Non-combustion heated smoking article and non-combustion heated smoking system

Also Published As

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HUE060424T2 (hu) 2023-02-28
JP7373388B2 (ja) 2023-11-02
IL283924A (en) 2021-07-29
EP4193851A1 (en) 2023-06-14
IL283924B1 (en) 2024-09-01
ZA202102097B (en) 2024-06-26
PH12021550874A1 (en) 2021-10-18
ES2933688T3 (es) 2023-02-13
LT3752013T (lt) 2022-12-12
KR20210107039A (ko) 2021-08-31
JP2022514750A (ja) 2022-02-15
BR112021010712A2 (pt) 2021-08-31
AU2019408541A1 (en) 2021-05-13
EP3752013A1 (en) 2020-12-23
JP7531493B2 (ja) 2024-08-09
PL3752013T3 (pl) 2023-02-20
JP2020114205A (ja) 2020-07-30
WO2020128045A1 (en) 2020-06-25
CA3116957A1 (en) 2020-06-25
MX2021006883A (es) 2021-07-02
CN113163853A (zh) 2021-07-23
US20220015414A1 (en) 2022-01-20

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