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WO2026008733A1 - Article de génération d'aérosol avec évidement d'extrémité buccale - Google Patents

Article de génération d'aérosol avec évidement d'extrémité buccale

Info

Publication number
WO2026008733A1
WO2026008733A1 PCT/EP2025/068892 EP2025068892W WO2026008733A1 WO 2026008733 A1 WO2026008733 A1 WO 2026008733A1 EP 2025068892 W EP2025068892 W EP 2025068892W WO 2026008733 A1 WO2026008733 A1 WO 2026008733A1
Authority
WO
WIPO (PCT)
Prior art keywords
aerosol
generating
generating article
millimetres
length
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.)
Pending
Application number
PCT/EP2025/068892
Other languages
English (en)
Inventor
Maria GÓMEZ LUESO
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
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 SA filed Critical Philip Morris Products SA
Publication of WO2026008733A1 publication Critical patent/WO2026008733A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices
    • 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
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure

Definitions

  • the present disclosure relates to an aerosol-generating article comprising an aerosolgenerating substrate and adapted to produce an inhalable aerosol upon induction heating.
  • Aerosol-generating articles in which an aerosol-generating substrate, such as a tobaccocontaining 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 aerosolgenerating 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.
  • electrically heated aerosol-generating devices have been proposed that comprise an internal heater blade which is adapted to be inserted into the aerosol-generating substrate.
  • inductively heatable aerosol-generating articles comprising an aerosol-generating substrate and a susceptor element arranged within the aerosol-generating substrate have been described in WO 2015/176898 A1.
  • Aerosol-generating articles in which a tobacco-containing substrate is heated rather than combusted present a number of challenges that were not encountered with conventional smoking articles.
  • tobacco-containing substrates are typically heated to significantly lower temperatures compared with the temperatures reached by the combustion front in a conventional cigarette. This may have an impact on nicotine release from the tobacco-containing substrate and nicotine delivery to the consumer.
  • aerosol-generating systems wherein an aerosol-generating substrate is heated inductively, it may be challenging to adjust and control the supply of heat to the aerosol-generating substrate so that, at any moment throughout use of the aerosol-generating article, generation and delivery of aerosol are fully satisfactory.
  • the aerosol-generating substrate occupies a well-defined position relative to a main body of the aerosol-generating device, and that said position can be maintained accurately.
  • auxiliary components that in an aerosol-generating article are typically combined with the aerosol-generating substrate to perform a number of functions (for example, to cool an aerosol generated upon heating the aerosol-generating substrate; to adjust an overall resistance to drawn of the aerosol-generating article, etc.) can be used to adjust a position of the aerosol-generating substrate, for example relative to a downstream end of the aerosol-generating article.
  • aerosol-generating articles in which a tobacco-containing substrate is heated rather than combusted also present more universal challenges. For example, it would generally be desirable for components of an aerosol-generating article to break down as quickly as possible.
  • cellulose acetate the fibrous filtration material most ordinarily used in auxiliary components of aerosol-generating articles, is not biodegradable, and can persist in the environment for years.
  • the present disclosure relates to an aerosol-generating article for producing an inhalable aerosol upon heating.
  • the aerosol-generating article extends from a mouth end to a distal end.
  • the aerosol-generating article may comprise a rod of aerosol-generating substrate.
  • the aerosol-generating article may comprise an upstream section at a location upstream of the rod of aerosol-generating substrate.
  • the upstream section may comprise a plug element arranged immediately upstream of the rod of aerosol-generating substrate, and may optionally further comprise a hollow tubular element defining a recess at the distal end, upstream of the plug element.
  • the aerosol-generating article may comprise a downstream section at a location downstream of the rod of aerosol-generating substrate.
  • downstream section may comprise a mouthpiece at the mouth end of the aerosol-generating article.
  • the mouthpiece may comprise a mouthpiece plug element, and may optionally further comprise a hollow tubular element defining a recess at the mouth end.
  • the hollow tubular element may be arranged immediately downstream of the mouthpiece plug element.
  • the hollow tubular element may extend longitudinally all the way from a downstream end of the mouthpiece plug element to the mouth end of the aerosol-generating article.
  • downstream section may further comprise an internal cavity located upstream of the mouthpiece.
  • a ratio between a length of the internal cavity and an overall length of the aerosol-generating article is at least 0.25.
  • a length of the downstream section may be less than 50 millimetres.
  • an aerosol-generating article for producing an inhalable aerosol upon heating extends from a mouth end to a distal end and comprises: a rod of aerosol-generating substrate; a downstream section at a location downstream of the rod of aerosol-generating substrate, the downstream section comprising a mouthpiece at the mouth end; and an upstream section at a location upstream of the rod of aerosol-generating substrate; wherein the mouthpiece comprises: a mouthpiece plug element and a hollow tubular element defining a recess at the mouth end, wherein the hollow tubular element is arranged immediately downstream of the mouthpiece plug element and extends longitudinally all the way from a downstream end of the mouthpiece plug element to the mouth end of the aerosol-generating article.
  • the downstream section comprises an internal cavity located upstream of the mouthpiece; a length of the downstream section is less than 50 millimetres; and a ratio between a length of the internal cavity and an overall length of the aerosol
  • an aerosol-generating article for producing an inhalable aerosol upon heating extends from a mouth end to a distal end and comprises: a rod of aerosol-generating substrate; a downstream section at a location downstream of the rod of aerosol-generating substrate, the downstream section comprising a mouthpiece at the mouth end; and an upstream section at a location upstream of the rod of aerosol-generating substrate; wherein the mouthpiece comprises: a mouthpiece plug element and a hollow tubular element defining a recess at the mouth end, wherein the hollow tubular element is arranged immediately downstream of the mouthpiece plug element and extends longitudinally all the way from a downstream end of the mouthpiece plug element to the mouth end of the aerosol-generating article.
  • the downstream section comprises an internal cavity located upstream of the mouthpiece, a length of the downstream section is less than 50 millimetres, a ratio between a length of the internal cavity and an overall length of the aerosol-generating article is at least 0.25, and an overall length of the aerosol-generating article is less than or equal to 60 millimetres.
  • an aerosol-generating article for producing an inhalable aerosol upon heating extends from a mouth end to a distal end and comprises: a rod of aerosol-generating substrate; a downstream section at a location downstream of the rod of aerosol-generating substrate, the downstream section comprising a mouthpiece at the mouth end; and an upstream section at a location upstream of the rod of aerosol-generating substrate.
  • the mouthpiece comprises: a mouthpiece plug element and a hollow tubular element defining a recess at the mouth end, wherein the hollow tubular element is arranged immediately downstream of the mouthpiece plug element and extends longitudinally all the way from a downstream end of the mouthpiece plug element to the mouth end of the aerosol-generating article.
  • the downstream section comprises an internal cavity located upstream of the mouthpiece; a length of the downstream section is less than 50 millimetres; and a ratio between a length of the internal cavity and an overall length of the aerosol-generating article is at least 0.25.
  • the upstream section comprises: an upstream plug element arranged immediately upstream of the rod of aerosol-generating substrate; and a hollow tubular element defining a distal end recess, upstream of the upstream plug element.
  • an aerosol-generating article for producing an inhalable aerosol upon heating extends from a mouth end to a distal end and comprises: a rod of aerosol-generating substrate; a downstream section at a location downstream of the rod of aerosol-generating substrate, the downstream section comprising a mouthpiece at the mouth end; and an upstream section at a location upstream of the rod of aerosol-generating substrate.
  • the mouthpiece comprises: a mouthpiece plug element and a hollow tubular element defining a recess at the mouth end, wherein the hollow tubular element is arranged immediately downstream of the mouthpiece plug element and extends longitudinally all the way from a downstream end of the mouthpiece plug element to the mouth end of the aerosol-generating article.
  • the downstream section comprises an internal cavity located upstream of the mouthpiece; a length of the downstream section is less than 50 millimetres, a ratio between a length of the internal cavity and an overall length of the aerosol-generating article is at least 0.25, and an overall length of the aerosol-generating article is less than or equal to 60 millimetres.
  • the upstream section comprises: an upstream plug element arranged immediately upstream of the rod of aerosolgenerating substrate; and a hollow tubular element defining a distal end recess, upstream of the upstream plug element.
  • Aerosol-generating articles in line with any one of the foregoing examples find use, in particular, in an aerosol-generating system for producing an inhalable aerosol.
  • the system comprises an aerosol-generating article according to any one of the foregoing examples, and an aerosol-generating device comprising a heating arrangement configured to heat at least a portion of the aerosol-generating substrate to generate an aerosol.
  • 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 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.
  • aerosol-generating devices are known wherein heating of the aerosol-generating substrate is achieved inductively by means of a susceptor element provided within the aerosol-generating substrate.
  • the aerosol generated upon heating the aerosol-generating substrate is a dispersion of solid particles or liquid droplets (or a combination of solid particles and liquid droplets) in a gas.
  • the aerosol may be visible or invisible and may include vapours of substances that are ordinarily liquid or solid at room temperature as well as solid particles or liquid droplets or a combination of solid particles and liquid droplets.
  • rod is used to denote a generally cylindrical element of substantially circular, oval or elliptical cross-section.
  • the term “plug element” is similarly used to denote a generally cylindrical element of substantially circular, oval or elliptical crosssection.
  • the term “plug element” is used in particular to denote a solid, cylindrical element which may comprise or be entirely formed of a porous material, yet which is not “hollow”. In other words, in contrast to a “hollow tubular element”, a “plug element” does not define an internal volume or internal cavity.
  • 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.
  • Aerosol generating articles and devices have a proximal end through which, in use, an aerosol exits the article or device for delivery to a user, and have an opposing distal end.
  • the proximal end of the aerosol generating article and device may also be referred to as the mouth end.
  • a user draws on the proximal end of the aerosol generating article in order to inhale the aerosol generated by the aerosol generating article or device.
  • upstream and downstream are relative to the direction of aerosol movement through the aerosol generating article or aerosol-generating device when a user draws on the proximal end of the aerosol-generating article.
  • the proximal end of the aerosolgenerating article is downstream of the distal end of the aerosol-generating article.
  • the proximal end of the aerosol-generating article may also be referred to as the downstream end of the aerosol-generating article and the distal end of the aerosol-generating article may also be referred to as the upstream end of the aerosol-generating article.
  • air is drawn through the aerosol-generating article in the longitudinal direction.
  • 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 aerosolgenerating 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.
  • the term “transverse” is used to describe the direction perpendicular to the longitudinal direction. Unless otherwise stated, references to the “cross-section” of the aerosol-generating article or aerosol-generating device or a component of the aerosol-generating article or aerosol-generating device refer to the transverse crosssection.
  • the term “width” denotes the maximum dimension of the aerosol-generating article or device or of a component of the aerosol-generating article or device in a transverse direction. For example, where the aerosol-generating article has a substantially circular cross-section, the width of the aerosol-generating article corresponds to the diameter of the aerosol-generating article. Where a component of the aerosol-generating article has a substantially circular cross-section, the width of the component of the aerosolgenerating article substantially corresponds to the diameter of the component of the aerosolgenerating article.
  • an aerosol-generating article In an aerosol-generating article, the generation and delivery of aerosol to the consumer will generally be impacted by how much heat is supplied, during use, to the aerosol-generating substrate.
  • an aerosol-generating article including the aerosol-generating substrate is generally received within a cavity of the aerosol-generating device, the cavity defining, for all intents and purposes, a heating chamber.
  • Efficiency of heat transfer is increased if, when the aerosol-generating article is inserted into the cavity of the aerosol-generating device, the aerosol-generating substate stably occupies a predetermined position within the heating chamber, such that a certain degree of alignment is achieved between the aerosol-generating substrate and one or more components of the aerosolgenerating device involved with the supply of heat.
  • the aerosol-generating device comprises one or more resistive elements disposed about the periphery of the heating chamber
  • the aerosol-generating substrate occupies a position within the heating chamber such that the one or more resistive elements face or effectively surround the aerosol-generating substrate, as this may facilitate and maximise heat transfer during use.
  • the aerosol-generating device comprises one or more coil configured to induce an electric current in a susceptor element provided within the aerosol-generating substrate
  • the aerosol-generating article occupies a position within the heating chamber such that an entire length of the susceptor is arranged within the spires of the coil.
  • the inventors have found that by adjusting the relative length of the mouthpiece plug element and of the hollow tubular element at the mouth end it may advantageously be possible to provide lighter aerosol-generating articles or aerosol-generating articles that have a reduced content of non-easily biodegradable materials. This may have a favourable impact on manufacturing and transportation costs, whilst at the same time beneficially reducing an environmental impact of the aerosol-generating article as a whole.
  • the benefits described above are especially advantageous in comparatively “short” aerosol-generating articles, such as ones wherein a length of the downstream section is less than 50 millimetres, and wherein the downstream section comprises an internal cavity.
  • a length of the downstream section is less than 50 millimetres, and wherein the downstream section comprises an internal cavity.
  • a length of the downstream section may be less than 45 millimetres, less than 40 millimetres, or less than 35 millimetres.
  • the aerosol-generating articles in accordance with the present disclosure all provide a range of alternative solutions for advantageously improving the heat transfer and, therefore, consistency of aerosol delivery to the consumer during use.
  • arrangements of components of the aerosol-generating articles in accordance with the present disclosure provide a number of possible design alternatives for the manufacturer, which can be beneficial in terms of reduced manufacturing and transportation costs, improved environmental impact, and so forth.
  • Arranging a plug element immediately downstream of the rod of aerosol-generating substrate and a hollow tubular element defining a recess at the distal end can provide aerosolgenerating articles having a novel visual impact on the consumer.
  • the recess defined at the distal end of the aerosol-generating article may be enough to help the consumer identify what end of the aerosol-generating article is to be inserted into the heating cavity.
  • one or more indicia may be provided on an internal surface of the recess at the mouth end, and this may advantageously convey additional information to the consumer, such as for distinguishing among different types of aerosol-generating articles intended for use with the same aerosol-generating device.
  • an aerosol-generating article comprising an aerosol-generating substrate, such as for example in the form of a rod of aerosol-generating substrate.
  • the aerosol-generating substrate may be a solid aerosol-generating substrate.
  • the aerosol-generating substrate may be circumscribed by a wrapper.
  • the aerosol-generating substrate comprises a plant material, such as tobacco plant material.
  • Particularly suitable types of materials for use in the aerosol-generating substrate include, for example, tobacco cut filler, homogenised tobacco material such as cast leaf, aerosol-generating films and gel compositions.
  • the aerosol-generating substrate preferably comprises an aerosol former.
  • Suitable aerosol formers are for example: polyhydric alcohols such as, for example, triethylene glycol, 1 ,3- butanediol, propylene glycol and glycerine; esters of polyhydric alcohols such as, for example, glycerol mono-, di- or triacetate; aliphatic esters of mono-, di- or polycarboxylic acids such as, for example, dimethyl dodecanedioate and dimethyl tetradecanedioate; and combinations thereof.
  • the aerosol former comprises one or more of glycerine and propylene glycol.
  • the aerosol former may consist of glycerine or propylene glycol or of a combination of glycerine and propylene glycol.
  • the aerosol-generating substrate preferably comprises at least 5 percent by weight of aerosol former on a dry weight basis of the aerosol-generating substrate, more preferably at least 10 percent by weight on a dry weight basis, more preferably at least 15 percent by weight on a dry weight basis.
  • the aerosol-generating substrate preferably comprises no more than 30 percent by weight of aerosol former on a dry weight basis of the aerosol-generating substrate, more preferably no more than 25 percent by weight on a dry weight basis, more preferably no more than 20 percent by weight on a dry weight basis.
  • the aerosol former content of the aerosol-generating substrate may be between 5 percent and 30 percent by weight, or between 10 percent and 25 percent by weight, or between about 15 percent and about 20 percent by weight, on a dry weight basis. In such embodiments, the aerosol former content is therefore relatively low.
  • the aerosol-generating substrate preferably comprises at least 40 percent by weight of aerosol former on a dry weight basis of the aerosol-generating substrate, more preferably at least 45 percent by weight on a dry weight basis, more preferably at least 50 percent by weight on a dry weight basis.
  • the aerosol-generating substrate preferably comprises no more than 80 percent by weight of aerosol former on a dry weight basis of the aerosol-generating substrate, more preferably no more than 75 percent by weight on a dry weight basis, more preferably no more than 70 percent by weight on a dry weight basis.
  • the aerosol former content of the aerosol-generating substrate may be between 40 percent and 80 percent by weight, or between 45 percent and 75 percent by weight, or between about 50 percent and about 70 percent by weight, on a dry weight basis. In such embodiments, the aerosol former content is therefore relatively high.
  • the aerosol-generating substrate comprises tobacco material.
  • the aerosol-generating substrate may comprise shredded tobacco material.
  • the shredded tobacco material may be in the form of cut filler, as described in more detail below.
  • the shredded tobacco material may be in the form of a shredded sheet of homogenised tobacco material. Suitable homogenised tobacco materials for use in the present disclosure are described below.
  • cut filler is used to describe to a blend of shredded plant material, such as tobacco plant material, including, in particular, one or more of leaf lamina, processed stems and ribs, homogenised plant material.
  • the cut filler suitable to be used with the present disclosure generally may resemble cut filler used for conventional smoking articles.
  • the cut width of the cut filler preferably may be between 0.3 millimetres and 2.0 millimetres, or between 0.5 millimetres and 1.2 millimetres, or between 0.6 millimetres and 0.9 millimetres.
  • the strands have a length of between about 10 millimetres and about 40 millimetres before the strands are collated to form the rod of aerosol-generating substrate.
  • the cut filler is soaked with the aerosol former. Soaking the cut filler can be done by spraying or by other suitable application methods.
  • the aerosol former in the cut filler comprises one or more of glycerol and propylene glycol.
  • the aerosol former may consist of glycerol or propylene glycol or of a combination of glycerol and propylene glycol.
  • the aerosol-generating substrate comprises homogenised plant material, preferably a homogenised tobacco material.
  • homogenised plant material encompasses any plant material formed by the agglomeration of particles of plant.
  • sheets or webs of homogenised tobacco material for the aerosol-generating substrates of the present disclosure may be formed by agglomerating particles of tobacco material obtained by pulverising, grinding or comminuting plant material and optionally one or more of tobacco leaf lamina and tobacco leaf stems.
  • the homogenised plant material may be produced by casting, extrusion, paper making processes or other any other suitable processes known in the art.
  • the homogenised plant material can be provided in any suitable form.
  • the homogenised plant material may be in the form of one or more sheets.
  • sheet describes a laminar element having a width and length substantially greater than the thickness thereof.
  • the homogenised plant material may be in the form of a plurality of pellets or granules.
  • the homogenised plant material may be in the form of a plurality of strands, strips or shreds.
  • strand describes an elongate element of material having a length that is substantially greater than the width and thickness thereof.
  • the aerosol former content of the homogenised tobacco material is preferably within the ranges defined above for aerosol-generating substrate having a relatively low aerosol former content.
  • the aerosol-generating substrate is in the form of an aerosol-generating film comprising a cellulosic based film-forming agent, nicotine and the aerosol former.
  • the aerosol-generating film may further comprise a cellulose based strengthening agent.
  • the aerosol-generating film may further comprise water, preferably 30 percent by weight of less of water.
  • film is used to describe a solid laminar element having a thickness that is less than the width or length thereof.
  • the film may be self-supporting.
  • the term “cellulose based film-forming agent” is used to describe a cellulosic polymer capable, by itself or in the presence of an auxiliary thickening agent, of forming a continuous film.
  • the cellulose based film-forming agent is selected from the group consisting of hydroxypropyl methylcellulose (HPMC), methylcellulose (MC), ethyl cellulose (EC), hydroxyethyl methyl cellulose (HEMC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), and combinations thereof.
  • HPMC hydroxypropyl methylcellulose
  • MC methylcellulose
  • EC ethyl cellulose
  • HEMC hydroxyethyl methyl cellulose
  • HEC hydroxyethyl cellulose
  • HPC hydroxypropyl cellulose
  • the aerosol former content of the aerosol-generating film is within the ranges defined above for aerosol-generating substrates having a relatively high aerosol former content.
  • Suitable aerosol-generating films for use as the aerosol-generating substrate of aerosolgenerating articles according to the invention are described in WO-A-2020/207733 and WO-A- 2022/074157.
  • the aerosol-generating film comprises between 0.5 percent and 10 percent by weight of nicotine, or between 1 percent and 8 percent by weight of nicotine, or between 2 percent and 6 percent by weight of nicotine, on a dry weight basis.
  • the aerosol-generating film may be a substantially tobacco-free aerosol-generating film.
  • the aerosol-generating substrate may comprise a gel composition that includes nicotine, at least one gelling agent and the aerosol former.
  • the gel composition is preferably substantially tobacco free.
  • the preferred weight ranges for nicotine in the gel composition are the same as those defined above in relation to aerosol-generating films.
  • Suitable gel compositions for use as the aerosol-generating substrate of aerosol-generating articles according to the invention are described in WO-A-2021/170642.
  • the gel composition preferably comprises at least 50 percent by weight of aerosol former, more preferably at least 60 percent by weight, more preferably at least 70 percent by weight of aerosol former, on a dry weight basis.
  • the gel composition may comprise up to 80 percent by weight of aerosol former.
  • the aerosol former in the gel composition is preferably glycerol.
  • the aerosol-generating substrate is preferably in the form of a sheet, such as for example a sheet of homogenised plant material.
  • the aerosol-generating substrate is preferably in the form of a sheet of homogenised tobacco material.
  • the aerosol-generating article further comprises an elongate susceptor arranged within the aerosol-generating substrate.
  • the term “susceptor” refers to a material that can convert electromagnetic energy into heat. When located within a fluctuating electromagnetic field, eddy currents induced in the susceptor cause heating of the susceptor. As the elongate susceptor is located in thermal contact with the aerosol-generating substrate, the aerosol-generating substrate is heated by the susceptor.
  • the term “elongate” means that the susceptor has a length dimension that is greater than its width dimension or its thickness dimension, for example greater than twice its width dimension or its thickness dimension.
  • the susceptor is arranged substantially longitudinally within the rod.
  • the length dimension of the elongate susceptor is arranged to be approximately parallel to the longitudinal direction of the rod, for example within plus or minus 10 degrees of parallel to the longitudinal direction of the rod.
  • the elongate susceptor may be positioned in a radially central position within the rod, and extends along the longitudinal axis of the rod.
  • the susceptor extends all the way to a downstream end of the rod of aerosolgenerating article.
  • the susceptor may extend all the way to an upstream end of the rod of aerosol-generating article.
  • the susceptor has substantially the same length as the rod of aerosol-generating substrate, and extends from the upstream end of the rod to the downstream end of the rod.
  • the susceptor is preferably in the form of a pin, rod, strip or blade.
  • the elongate susceptor has a length which is the same or shorter than the length of the aerosol-generating substrate.
  • the elongate susceptor has a same length as the aerosol-generating substrate.
  • the susceptor may be formed from any material that can be inductively heated to a temperature sufficient to generate an aerosol from the aerosol-generating substrate.
  • Preferred susceptors comprise a metal or carbon.
  • a preferred susceptor may comprise or consist of a ferromagnetic material, for example a ferromagnetic alloy, ferritic iron, or a ferromagnetic steel or stainless steel.
  • a suitable susceptor may be, or comprise, aluminium.
  • Preferred susceptors may be formed from 400 series stainless steels, for example grade 410, or grade 420, or grade 430 stainless steel. Different materials will dissipate different amounts of energy when positioned within electromagnetic fields having similar values of frequency and field strength.
  • parameters of the susceptor such as material type, length, width, and thickness may all be altered to provide a desired power dissipation within a known electromagnetic field.
  • Preferred susceptors may be heated to a temperature in excess of 250 degrees Celsius.
  • Suitable susceptors may comprise a non-metallic core with a metal layer disposed on the non-metallic core, for example metallic tracks formed on a surface of a ceramic core.
  • a susceptor may have a protective external layer, for example a protective ceramic layer or protective glass layer encapsulating the susceptor.
  • the susceptor may comprise a protective coating formed by a glass, a ceramic, or an inert metal, formed over a core of susceptor material.
  • the susceptor is arranged in thermal contact with the aerosol-generating substrate.
  • the susceptor heats up the aerosol-generating substrate is heated up and an aerosol is formed.
  • the susceptor is arranged in direct physical contact with the aerosolgenerating substrate, for example within the aerosol-generating substrate.
  • the susceptor may be a multi-material susceptor and may comprise a first susceptor material and a second susceptor material.
  • the first susceptor material is disposed in intimate physical contact with the second susceptor material.
  • the second susceptor material preferably has a Curie temperature that is lower than 500 degrees Celsius.
  • the first susceptor material is preferably used primarily to heat the susceptor when the susceptor is placed in a fluctuating electromagnetic field. Any suitable material may be used.
  • the first susceptor material may be aluminium, or may be a ferrous material such as a stainless steel.
  • the second susceptor material is preferably used primarily to indicate when the susceptor has reached a specific temperature, that temperature being the Curie temperature of the second susceptor material.
  • the Curie temperature of the second susceptor material can be used to regulate the temperature of the entire susceptor during operation.
  • the Curie temperature of the second susceptor material should be below the ignition point of the aerosol-generating substrate.
  • Suitable materials for the second susceptor material may include nickel and certain nickel alloys.
  • the heating of the aerosol-generating substrate and the temperature control of the heating may be separated.
  • the first susceptor material is preferably a magnetic material having a Curie temperature that is above 500 degrees Celsius. It is desirable from the point of view of heating efficiency that the Curie temperature of the first susceptor material is above any maximum temperature that the susceptor should be capable of being heated to.
  • the second Curie temperature may preferably be selected to be lower than 400 degrees Celsius, preferably lower than 380 degrees Celsius, or lower than 360 degrees Celsius.
  • the second susceptor material is a magnetic material selected to have a second Curie temperature that is substantially the same as a desired maximum heating temperature. That is, it is preferable that the second Curie temperature is approximately the same as the temperature that the susceptor should be heated to in order to generate an aerosol from the aerosol-generating substrate.
  • the second Curie temperature may, for example, be within the range of 200 degrees Celsius to 400 degrees Celsius, or between 250 degrees Celsius and 360 degrees Celsius.
  • the second Curie temperature of the second susceptor material may, for example, be selected such that, upon being heated by a susceptor that is at a temperature equal to the second Curie temperature, an overall average temperature of the aerosol-generating substrate does not exceed 240 degrees Celsius.
  • aerosol-generating articles in accordance with the present disclosure comprise a downstream section provided downstream of the rod of aerosol-generating substrate. Components of the downstream section are disposed in longitudinal alignment with the rod of aerosol-generating substrate and the upstream section to form the aerosol-generating article.
  • the aerosol-generating article comprises one or more combining wrappers or tipping paper or both, that are configured for attaching, directly or indirectly, the components of the downstream section to the rod of aerosol-generating substrate.
  • the downstream section comprises a mouthpiece plug element and a hollow tubular element defining a recess at the mouth end, the hollow tubular element arranged immediately downstream of the mouthpiece plug element and extending longitudinally all the way from a downstream end of the mouthpiece plug element to the mouth end of the aerosol-generating article.
  • the mouth end recess-defining hollow tubular segment comprises a tube formed from a polymeric material or a cellulosic material
  • the aerosol-generating article further comprises a wrapper circumscribing at least the tube and the mouthpiece plug element.
  • the mouth end recess-defining hollow tubular segment comprises a wrapper circumscribing at least the mouthpiece plug element and extending beyond a downstream end of the mouthpiece plug element to define the recess.
  • the mouthpiece plug element comprises a filtration material.
  • the filtration material may comprise a cellulosic filtration material.
  • the cellulosic filtration material may comprise a fibrous material.
  • Suitable fibrous materials for forming a filtration material are known to the skilled person.
  • the fibrous material comprises a plurality of regenerated cellulose fibres.
  • Suitable regenerated cellulose fibres include but are not limited to viscose fibres, modal fibres, Lyocell fibres, viscose rayon fibres and combinations thereof.
  • the term “regenerated cellulose fibres” is used herein to mean cellulose fibres which have been formed by processing a naturally occurring cellulose material to provide cellulose fibres having a desired physical property.
  • a typical process for forming regenerated cellulose fibres includes the steps of: pulping a naturally occurring cellulose material, such as wood chips, to form a pulp; subjecting the pulp to one or more treatment steps to alter the physical properties of the cellulose.
  • the regenerated cellulose fibres are crimped staple fibres, which helps to reduce mechanical degradation of the fibres during processing of the filtration material to form the plug element.
  • the fibrous material comprises a plurality of natural cellulosic fibres.
  • Suitable natural cellulosic fibres include but are not limited to: flax fibres, hemp fibres, jute fibres, kenaf fibres, ramie fibres, abaca fibres, phormium fibres, sisal fibres, coir fibres, cotton fibres, kapok fibres, or combinations thereof.
  • the fibrous material comprises cotton fibres or a combination or cotton fibres and kapok fibres.
  • the natural fibres comprise mercerised fibres.
  • the natural fibres are crimped continuous or staple fibres, which helps to reduce mechanical degradation of the fibres during processing of the filtration material to form the plug element, and during subsequent assembly of the aerosol-generating article.
  • the fibres can be crimped using a known method for crimping textile fibres.
  • the natural fibres may have a substantially round cross-section.
  • the filtration material may comprise a non-woven sheet.
  • the non-woven sheet material is a sheet of paper material.
  • paper material is used to denote a web of cellulosic fibres in sheet form.
  • sheet is used to describe a laminar element having a width and a length substantially greater than a thickness thereof.
  • the sheet may have a thickness ranging from 0.03 to 2 millimetres and a basis weight of from 10 grams per square metre to 200 grams per square metre.
  • the plug element may for example comprise a single sheet of paper material that is gathered or otherwise processed to be formed into a rod shape.
  • the plug element may comprise two or more sheets that are gathered or otherwise processed together to be formed into a rod shape.
  • two or more sheets of paper material may be laid on top of each other and gathered or otherwise processed at once to form the plug element.
  • Two or more sheets of paper material may also be gathered or otherwise processed independently, in parallel to each other, and then combined to form the plug element.
  • the plug element may, as an alternative, comprise a plurality of sheets of paper material stacked on top of each other.
  • the resulting stack may have a thickness of up to 10 millimetres.
  • the stack may be slitted into cylindrical elements to form plug elements for use in an aerosolgenerating article according to the present invention.
  • the web or sheet of paper material Prior to being formed into a downstream element, the web or sheet of paper material may be textured. Texturing of the web or sheet of paper material may advantageously facilitate gathering of the sheet into a rod.
  • textured sheet denotes a sheet that has been crimped, embossed, debossed, perforated or otherwise deformed. Textured sheets of paper material may therefore comprise a plurality of spaced-apart indentations, protrusions, perforations or a combination thereof.
  • downstream section further comprises an internal cavity located upstream of the mouthpiece.
  • the internal cavity is arranged immediately downstream of the rod of aerosolgenerating substrate. That is, the downstream section does not comprise any further component arranged between the internal cavity and the rod of aerosol-generating substrate.
  • the internal cavity is adjacent the rod of aerosol-generating substrate. That is, a downstream end surface of the rod of aerosol-generating substrate delimits the internal cavity at its upstream end.
  • the internal cavity is further arranged immediately upstream of the mouthpiece plug element. That is, the downstream section does not comprise any further component arranged between the internal cavity and the mouthpiece plug element.
  • the internal cavity is adjacent the mouthpiece plug element. That is, an upstream end surface of the mouthpiece plug element delimits the internal cavity at its downstream end.
  • the internal cavity extends longitudinally all the way from a downstream end of the rod of aerosolgenerating substrate to an upstream end of the mouthpiece.
  • the downstream section may comprise one or more hollow tubular members arranged between the rod of aerosol-generating substrate and the mouthpiece, wherein the one or more hollow tubular members define the internal cavity.
  • the one or more hollow tubular members comprise a tube formed of a polymeric material or a cellulosic material.
  • the cellulosic material from which the tube is formed may be a fibrous material.
  • the fibrous material may comprise a plurality of regenerated cellulose fibres, wherein the regenerated cellulose fibres are one or more of viscose fibres, modal fibres, Lyocell fibres and viscose rayon fibres.
  • the fibrous material may comprise a plurality of natural fibres, wherein the natural fibres are one or more of flax fibres, hemp fibres, jute fibres, kenaf fibres, ramie fibres, abaca fibres, phormium fibres, sisal fibres, coir fibres, cotton fibres, and kapok fibres.
  • the fibrous material may comprise a paper material.
  • the two or more tubes defining the cavity may be formed of the same polymeric material or cellulosic material.
  • the two or more tubes defining the cavity may be formed from different polymeric or cellulosic material.
  • the one or more hollow tubular members comprises a support element arranged immediately downstream of the rod of aerosol-generating substrate and an aerosol-cooling element arranged immediately downstream of the support element.
  • the aerosol-generating article comprises a ventilation zone at a location along the downstream section.
  • the downstream section comprises one or more hollow tubular members arranged between the rod of aerosol-generating substrate and the mouthpiece, wherein the one or more hollow tubular members define the internal cavity
  • the ventilation zone is preferably provided at a location along one of the one or more hollow tubular members, such that the ventilation zone enables ingress of air into the internal cavity when, during use, the consumer draws upon the aerosol-generating article at the mouth end.
  • the one or more hollow tubular members arranged between the rod of aerosol-generating substrate and the mouthpiece provide an aerosol-cooling section.
  • a satisfactory cooling of the stream of aerosol generated upon heating the aerosolgenerating substrate and drawn through one such aerosol-cooling section is achieved by providing a ventilation zone at a location along the internal cavity. Further, by arranging the ventilation zone at a precisely defined location along the length of the internal cavity and by preferably utilising a hollow tubular segment having a predetermined peripheral wall thickness or internal diameter - that is, by utilising an internal cavity with a sufficiently large volume - 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.
  • “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 35 millimetres, even more preferably less than 30 millimetres or less than 25 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 35 millimetres, even more preferably less than 30 millimetres or less than 25 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.
  • the ventilation zone may comprise a plurality of perforations through a peripheral wall of the one of the one or more hollow tubular members.
  • the ventilation zone comprises at least one circumferential row of perforations.
  • the ventilation zone may comprise two circumferential rows of perforations.
  • the perforations may be formed online during manufacturing of the aerosol-generating article.
  • each circumferential row of perforations comprises from 8 to 30 perforations.
  • An aerosol-generating article in accordance with the present disclosure may have a ventilation level of at least about 5 percent.
  • 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.
  • an aerosol-generating article in accordance with the present disclosure may have a ventilation level of at least 10 percent, more preferably at least 15 percent, even more preferably at least 20 percent. In particularly preferred embodiments, an aerosol-generating article in accordance with the present disclosure has a ventilation level of at least 25 percent.
  • the aerosol-generating article preferably has a ventilation level of less than 80 percent, preferably less than 70 percent, even more preferably less than 60 percent.
  • an aerosol-generating article in accordance with the present disclosure preferably has a ventilation level of less than or equal to 45 percent or even less than or equal to 35 percent.
  • the aerosol-generating article has a ventilation level from 10 percent to 80 percent, preferably from 15 percent to 80 percent, more preferably from 20 percent to 80 percent, even more preferably from 25 percent to 80 percent.
  • the aerosol-generating article has a ventilation level from 10 percent to 70 percent, preferably from 15 percent to 70 percent, more preferably from 20 percent to 70 percent, even more preferably from 25 percent to 70 percent.
  • the aerosol-generating article has a ventilation level from 10 percent to 60 percent, preferably from 15 percent to 60 percent, more preferably from 20 percent to 60 percent, even more preferably from 25 percent to 60 percent.
  • a peripheral wall of the mouth end recess-defining hollow tubular segment may have a thickness of at least 60 micrometres.
  • a peripheral wall of the mouth end recess-defining hollow tubular segment has a thickness of at least 80 micrometres. More preferably, a peripheral wall of the mouth end recess-defining hollow tubular segment has a thickness of at least 90 micrometres. Even more preferably, a peripheral wall of the mouth end recess-defining hollow tubular segment has a thickness of at least 100 micrometres.
  • a peripheral wall of the mouth end recess-defining hollow tubular segment may have a thickness of up to 200 micrometres.
  • a peripheral wall of the mouth end recess-defining hollow tubular segment has a thickness of less than or equal to 180 micrometres. More preferably, a peripheral wall of the mouth end recess-defining hollow tubular segment has a thickness of less than or equal to 160 micrometres. Even more preferably, a peripheral wall of the mouth end recess-defining hollow tubular segment has a thickness of less than or equal to 140 micrometres.
  • a peripheral wall of the mouth end recess-defining hollow tubular segment has a thickness of from 60 micrometres to 200 micrometres, preferably from 60 micrometres to 180 micrometres, more preferably from 60 micrometres to 160 micrometres, even more preferably from 60 micrometres to 140 micrometres.
  • a peripheral wall of the mouth end recess-defining hollow tubular segment has a thickness of from 80 micrometres to 200 micrometres, preferably from 80 micrometres to 180 micrometres, more preferably from 80 micrometres to 160 micrometres, even more preferably from 80 micrometres to 140 micrometres.
  • a peripheral wall of the mouth end recess-defining hollow tubular segment has a thickness of from 90 micrometres to 200 micrometres, preferably from 90 micrometres to 180 micrometres, more preferably from 90 micrometres to 160 micrometres, even more preferably from 90 micrometres to 140 micrometres.
  • a peripheral wall of the mouth end recess-defining hollow tubular segment has a thickness of from 100 micrometres to 200 micrometres, preferably from 100 micrometres to 180 micrometres, more preferably from 100 micrometres to 160 micrometres, even more preferably from 100 micrometres to 140 micrometres.
  • a length of the mouthpiece plug element may be at least 3 millimetres.
  • a length of the mouthpiece plug element is at least 5 millimetres. More preferably, a length of the mouthpiece plug element is at least 7 millimetres. Even more preferably, a length of the mouthpiece plug element is at least 10 millimetres. In aerosol-generating articles according to the present disclosure, a length of the mouthpiece plug element may be up to 25 millimetres.
  • a length of the mouthpiece plug element is less than or equal to 20 millimetres. More preferably, a length of the mouthpiece plug element is less than or equal to 17 millimetres. Even more preferably, a length of the mouthpiece plug element is less than or equal to 12 millimetres.
  • a length of the mouthpiece plug element is from 3 millimetres to 25 millimetres, preferably from 3 millimetres to 20 millimetres, more preferably from 3 millimetres to 17 millimetres, even more preferably from 3 millimetres to 12 millimetres.
  • a length of the mouthpiece plug element is from 5 millimetres to 25 millimetres, preferably from 5 millimetres to 20 millimetres, more preferably from 5 millimetres to 17 millimetres, even more preferably from 5 millimetres to 12 millimetres.
  • a length of the mouthpiece plug element is from 7 millimetres to 25 millimetres, preferably from 7 millimetres to 20 millimetres, more preferably from 7 millimetres to 17 millimetres, even more preferably from 7 millimetres to 12 millimetres.
  • a length of the mouthpiece plug element is from 10 millimetres to 25 millimetres, preferably from 10 millimetres to 20 millimetres, more preferably from 10 millimetres to 17 millimetres, even more preferably from 10 millimetres to 12 millimetres.
  • a ratio between a length of the mouthpiece plug element and an overall length of the aerosol-generating article may be at least 0.077.
  • a ratio between a length of the mouthpiece plug element and an overall length of the aerosol-generating article is at least 0.08. More preferably, a ratio between a length of the mouthpiece plug element and an overall length of the aerosol-generating article is at least 0.10. Even more preferably, a ratio between a length of the mouthpiece plug element and an overall length of the aerosol-generating article is at least 0.12.
  • a ratio between a length of the mouthpiece plug element and an overall length of the aerosol-generating article may be up to 0.222.
  • a ratio between a length of the mouthpiece plug element and an overall length of the aerosol-generating article is less than or equal to 0.20. More preferably, a ratio between a length of the mouthpiece plug element and an overall length of the aerosol-generating article is less than or equal to 0.18. Even more preferably, a ratio between a length of the mouthpiece plug element and an overall length of the aerosol-generating article is less than or equal to 0.16.
  • a ratio between a length of the mouthpiece plug element and an overall length of the aerosol-generating article is from 0.077 to 0.222, preferably from 0.077 to 0.20, more preferably from 0.077 to 0.18, even more preferably from 0.077 to 0.16. In other embodiments, a ratio between a length of the mouthpiece plug element and an overall length of the aerosol-generating article is from 0.08 to 0.222, preferably from 0.08 to 0.20, more preferably from 0.08 to 0.18, even more preferably from 0.08 to 0.16.
  • a ratio between a length of the mouthpiece plug element and an overall length of the aerosol-generating article is from 0.10 to 0.222, preferably from 0.10 to 0.20, more preferably from 0.10 to 0.18, even more preferably from 0.10 to 0.16.
  • a ratio between a length of the mouthpiece plug element and an overall length of the aerosol-generating article is from 0.12 to 0.222, preferably from 0.12 to 0.20, more preferably from 0.12 to 0.18, even more preferably from 0.12 to 0.16.
  • a length of the mouth end recess may be at least 1 millimetre.
  • a length of the mouth end recess is least 2 millimetres. More preferably, a length of the mouth end recess is at least 3 millimetres.
  • a length of the mouth end recess may be up to 8 millimetres.
  • a length of the mouth end recess is less than or equal to 6 millimetres. More preferably, a length of the mouth end recess is less than or equal to 5 millimetres.
  • a length of the mouth end recess is from 1 millimetre to 8 millimetres, preferably from 1 millimetre to 6 millimetres, more preferably from 1 millimetre to 5 millimetres.
  • a length of the mouth end recess is from 2 millimetres to 8 millimetres, preferably from 2 millimetres to 6 millimetres, more preferably from 2 millimetres to 5 millimetres.
  • a length of the mouth end recess is from 3 millimetres to 8 millimetres, preferably from 3 millimetres to 6 millimetres, more preferably from 3 millimetres to 5 millimetres.
  • a ratio between a length of the mouth end recess and an overall length of the aerosol-generating article may be at least 0.015.
  • a ratio between a length of the mouth end recess and an overall length of the aerosol-generating article is at least 0.02. More preferably, a ratio between a length of the mouth end recess and an overall length of the aerosol-generating article is at least 0.04. Even more preferably, a ratio between a length of the mouth end recess and an overall length of the aerosolgenerating article is at least 0.06.
  • a ratio between a length of the mouth end recess and an overall length of the aerosol-generating article may be up to 0.133.
  • a ratio between a length of the mouth end recess and an overall length of the aerosol-generating article is less than or equal to 0.125. More preferably, a ratio between a length of the mouth end recess and an overall length of the aerosol-generating article is less than or equal to 0.11. Even more preferably, a ratio between a length of the mouth end recess and an overall length of the aerosol-generating article is less than or equal to 0.10.
  • a ratio between a length of the mouth end recess and an overall length of the aerosol-generating article is from 0.015 to 0.133, preferably from 0.02 to 0.133, more preferably from 0.04 to 0.133, even more preferably from 0.04 to 0.133.
  • a ratio between a length of the mouth end recess and an overall length of the aerosol-generating article is from 0.015 to 0.125, preferably from 0.02 to 0.125, more preferably from 0.04 to 0.125, even more preferably from 0.04 to 0.125.
  • a ratio between a length of the mouth end recess and an overall length of the aerosol-generating article is from 0.015 to 0.11 , preferably from 0.02 to 0.11 , more preferably from 0.04 to 0.11 , even more preferably from 0.04 to 0.11 .
  • a ratio between a length of the mouth end recess and an overall length of the aerosol-generating article is from 0.015 to 0.10, preferably from 0.02 to 0.10, more preferably from 0.04 to 0.10, even more preferably from 0.04 to 0.10.
  • downstream section comprises an internal cavity located upstream of the mouthpiece.
  • a ratio between a length of the internal cavity and an overall length of the aerosol-generating article may be at least 0.20.
  • a ratio between a length of the internal cavity and an overall length of the aerosol-generating article is at least 0.25. More preferably, a ratio between a length of the internal cavity and an overall length of the aerosol-generating article is at least 0.26. Even more preferably, a ratio between a length of the internal cavity and an overall length of the aerosolgenerating article is at least 0.27.
  • a ratio between a length of the internal cavity and an overall length of the aerosol-generating article may be up to 0.40.
  • a ratio between a length of the internal cavity and an overall length of the aerosol-generating article is less than or equal to 0.35. More preferably, a ratio between a length of the internal cavity and an overall length of the aerosol-generating article is less than or equal to 0.34. Even more preferably, a ratio between a length of the internal cavity and an overall length of the aerosol-generating article is less than or equal to 0.33.
  • a ratio between a length of the internal cavity and an overall length of the aerosol-generating article is from 0.20 to 0.40, preferably from 0.20 to 0.35, more preferably from 0.20 to 0.34, even more preferably from 0.20 to 0.33. In other embodiments, a ratio between a length of the internal cavity and an overall length of the aerosol-generating article is from 0.25 to 0.40, preferably from 0.25 to 0.35, more preferably from 0.25 to 0.34, even more preferably from 0.25 to 0.33.
  • a ratio between a length of the internal cavity and an overall length of the aerosol-generating article is from 0.26 to 0.40, preferably from 0.26 to 0.35, more preferably from 0.26 to 0.34, even more preferably from 0.26 to 0.33.
  • a ratio between a length of the internal cavity and an overall length of the aerosol-generating article is from 0.27 to 0.40, preferably from 0.27 to 0.35, more preferably from 0.27 to 0.34, even more preferably from 0.27 to 0.33.
  • a content of cellulose acetate in the downstream section may be less than or equal to 50 percent by weight.
  • a content of cellulose acetate in the downstream section is less than or equal to 40 percent by weight. More preferably, a content of cellulose acetate in the downstream section may be less than or equal to 30 percent by weight. Even more preferably, a content of cellulose acetate in the downstream section may be less than or equal to 25 percent by weight.
  • an aerosol-generating article comprises an upstream section at a location upstream of the rod of aerosol-generating substrate.
  • Components forming the upstream section are disposed in longitudinal alignment with the rod of aerosol-generating substrate.
  • the aerosol-generating article may comprise one or more combining wrappers attaching, directly or indirectly, the components of the upstream section to the rod of aerosol-generating substrate.
  • the upstream section comprises a plug element arranged immediately upstream of the rod of aerosol-generating substrate.
  • the plug element is arranged adjacent the rod of aerosol-generating substrate. That is, a downstream end surface of the plug element preferably abuts an upstream end surface of the rod of aerosol-generating substrate.
  • the plug element of the upstream section may comprise a filtration material. Suitable filtration materials for inclusion in the upstream plug element are known to the skilled person.
  • the upstream plug element may comprise one or more of the filtration materials described above with reference to the mouthpiece plug element.
  • the upstream section may further comprise a hollow tubular element defining a recess at the distal end, the hollow tubular element being arranged upstream of the plug element.
  • the hollow tubular element may be arranged immediately upstream of the plug element.
  • the upstream section does not comprise any further component positioned between the hollow tubular element defining the recess at the distal end and the plug element.
  • the hollow tubular element is adjacent the plug element. That is, a downstream end surface of the hollow tubular element abuts an upstream end surface of the plug element.
  • the recess is located immediately upstream of the plug element and extends longitudinally all the way from an upstream end of the plug element to the distal end of the aerosolgenerating article.
  • the upstream section may comprise one or more further intermediate components arranged between the hollow tubular element defining the recess at the distal end and the plug element.
  • the recess is located immediately upstream of the most distal one of the one or more further intermediate components and extends longitudinally all the way from an upstream end of the most distal one of the one or more further intermediate components to the distal end of the aerosol-generating article.
  • the hollow tubular segment defining the recess at the distal end of the aerosol-generating article comprises a tube formed from a polymeric material or a cellulosic material, and the aerosol-generating article further comprises a wrapper circumscribing at least the tube and the plug element.
  • the recess is delimited peripherally by an internal surface of the tube.
  • the cellulosic material from which the tube is formed may be a fibrous material.
  • the fibrous material may comprise a plurality of regenerated cellulose fibres, wherein the regenerated cellulose fibres are one or more of viscose fibres, modal fibres, Lyocell fibres and viscose rayon fibres.
  • the fibrous material may comprise a plurality of natural fibres, wherein the natural fibres are one or more of flax fibres, hemp fibres, jute fibres, kenaf fibres, ramie fibres, abaca fibres, phormium fibres, sisal fibres, coir fibres, cotton fibres, and kapok fibres.
  • the fibrous material may comprise a paper material.
  • certain properties of the upstream section may advantageously be adjusted by selecting a polymeric material or cellulosic material for forming the tube that possesses desirable physical or chemical properties.
  • certain polymeric materials are inherently capable of withstanding higher temperatures and so they may be particularly suitable for the manufacture of aerosol-generating articles in accordance with the present invention that are intended for use with an aerosol-generating device comprising resistive heating elements to which the upstream section is directly exposed during use.
  • the hollow tubular segment defining the recess at the distal end of the aerosol-generating article comprises a wrapper circumscribing at least the segment of filtration material and extending beyond an upstream end of the plug element to define the recess.
  • the recess is delimited peripherally by an internal surface of the portion of wrapper that extends beyond the upstream end of the plug element.
  • certain properties of the upstream section may advantageously be adjusted by selecting a wrapper material that possesses desirable physical or chemical properties. For example, by adjusting parameters such as thickness and basis weight of the wrapper material, it may advantageously be possible to adjust a resistance to compressive loads or the ability of the upstream section to maintain a low ovality following compression, and so forth.
  • a peripheral wall of the hollow tubular element defining the recess at the distal end of the aerosol-generating article may have a thickness of up to 1.5 millimetres.
  • a peripheral wall of the hollow tubular element defining the recess at the distal end of the aerosol-generating article has a thickness of less than or equal to 1 millimetre. More preferably, a peripheral wall of the hollow tubular element defining the recess at the distal end of the aerosol-generating article has a thickness of less than or equal to 0.9 millimetres. Even more preferably, a peripheral wall of the hollow tubular element defining the recess at the distal end of the aerosol-generating article has a thickness of less than or equal to 0.8 millimetres.
  • a peripheral wall of the hollow tubular element defining the recess at the distal end of the aerosol-generating article may have a thickness of at least 0.1 millimetres.
  • a peripheral wall of the hollow tubular element defining the recess at the distal end of the aerosol-generating article has a thickness of at least 0.2 millimetres. More preferably, a peripheral wall of the hollow tubular element defining the recess at the distal end of the aerosolgenerating article has a thickness of at least 0.3 millimetres. Even more preferably, a peripheral wall of the hollow tubular element defining the recess at the distal end of the aerosol-generating article has a thickness of at least 0.4 millimetres.
  • a peripheral wall of the hollow tubular element defining the recess at the distal end of the aerosol-generating article has a thickness of from 0.1 millimetres to 1.5 millimetres, preferably from 0.1 millimetres to 1 millimetre, more preferably from 0.1 millimetres to 0.9 millimetres, even more preferably from 0.1 millimetres to 0.8 millimetres.
  • a peripheral wall of the hollow tubular element defining the recess at the distal end of the aerosol-generating article has a thickness of from 0.2 millimetres to 1.5 millimetres, preferably from 0.2 millimetres to 1 millimetre, more preferably from 0.2 millimetres to 0.9 millimetres, even more preferably from 0.2 millimetres to 0.8 millimetres.
  • a peripheral wall of the hollow tubular element defining the recess at the distal end of the aerosol-generating article has a thickness of from 0.3 millimetres to 1.5 millimetres, preferably from 0.3 millimetres to 1 millimetre, more preferably from 0.3 millimetres to 0.9 millimetres, even more preferably from 0.3 millimetres to 0.8 millimetres.
  • a peripheral wall of the hollow tubular element defining the recess at the distal end of the aerosol-generating article has a thickness of from 0.4 millimetres to 1.5 millimetres, preferably from 0.4 millimetres to 1 millimetre, more preferably from 0.4 millimetres to 0.9 millimetres, even more preferably from 0.4 millimetres to 0.8 millimetres.
  • a length of the plug element of the upstream section may be at least 1 millimetre.
  • a length of the plug element of the upstream section is at least 2 millimetres. More preferably, a length of the plug element of the upstream section is at least 4 millimetres. Even more preferably, a length of the plug element of the upstream section is at least 5 millimetres.
  • a length of the plug element of the upstream section may be up to 12 millimetres.
  • a length of the plug element of the upstream section is less than or equal to 10 millimetres. More preferably, a length of the plug element of the upstream section is less than or equal to 8 millimetres. Even more preferably, a length of the plug element of the upstream section is less than or equal to 7 millimetres.
  • a length of the plug element of the upstream section is from 1 millimetre to 12 millimetres, preferably from 1 millimetre to 10 millimetres, more preferably from 1 millimetre to 8 millimetres, even more preferably from 1 millimetre to 7 millimetres.
  • a length of the plug element of the upstream section is from 2 millimetres to 12 millimetres, preferably from 2 millimetres to 10 millimetres, more preferably from 2 millimetres to 8 millimetres, even more preferably from 2 millimetres to 7 millimetres.
  • a length of the plug element of the upstream section is from 4 millimetres to 12 millimetres, preferably from 4 millimetres to 10 millimetres, more preferably from
  • a length of the plug element of the upstream section is from 5 millimetres to 12 millimetres, preferably from 5 millimetres to 10 millimetres, more preferably from
  • a length of the recess at the distal end of the aerosol-generating article may be may be at least 1 millimetre.
  • a length of the recess at the distal end of the aerosol-generating article may is at least 1.5 millimetres. More preferably, a length of the recess at the distal end of the aerosolgenerating article may is at least 2 millimetres. Even more preferably, a length of the recess at the distal end of the aerosol-generating article may is at least 3 millimetres.
  • a length of the recess at the distal end of the aerosol-generating article may be may up to 7 millimetres.
  • a length of the recess at the distal end of the aerosol-generating article is less than or equal to 6.5 millimetres. More preferably, a length of the recess at the distal end of the aerosol-generating article is less than or equal to 6 millimetres. Even more preferably, a length of the recess at the distal end of the aerosol-generating article is less than or equal to 5 millimetres.
  • a length of the recess at the distal end of the aerosol-generating article is from 1 millimetre to 7 millimetres, preferably from 1 millimetre to 6.5 millimetres, more preferably from 1 millimetre to 6 millimetres, even more preferably from 1 millimetres to 5 millimetres.
  • a length of the recess at the distal end of the aerosol-generating article is from 1.5 millimetres to 7 millimetres, preferably from 1.5 millimetres to 6.5 millimetres, more preferably from 1.5 millimetres to 6 millimetres, even more preferably from 1.5 millimetres to 5 millimetres.
  • a length of the recess at the distal end of the aerosol-generating article is from 2 millimetres to 7 millimetres, preferably from 2 millimetres to 6.5 millimetres, more preferably from 2 millimetres to 6 millimetres, even more preferably from 2 millimetres to 5 millimetres.
  • a length of the recess at the distal end of the aerosolgenerating article is from 3 millimetres to 7 millimetres, preferably from 3 millimetres to 6.5 millimetres, more preferably from 3 millimetres to 6 millimetres, even more preferably from 3 millimetres to 5 millimetres.
  • a ratio between a length of plug element of the upstream section and a length of the upstream section may be at least 0.142.
  • a ratio between a length of plug element of the upstream section and a length of the upstream section is at least 0.145. More preferably, a ratio between a length of plug element of the upstream section and a length of the upstream section is at least 0.20. Even more preferably, a ratio between a length of plug element of the upstream section and a length of the upstream section is at least 0.25.
  • a ratio between a length of plug element of the upstream section and a length of the upstream section may be up to 0.909.
  • a ratio between a length of plug element and a length of the upstream section is less than or equal to 0.9. More preferably, a ratio between a length of plug element and a length of the upstream section is less than or equal to 0.75. Even more preferably, a ratio between a length of plug element and a length of the upstream section is less than or equal to 0.7. In some embodiments, a ratio between a length of plug element and a length of the upstream section is from 0.145 to 0.9, preferably from 0.145 to 0.75, even more preferably from 0.145 to 0.7.
  • a ratio between a length of plug element and a length of the upstream section is from 0.20 to 0.9, preferably from 0.20 to 0.75, even more preferably from 0.20 to 0.7.
  • a ratio between a length of plug element and a length of the upstream section is from 0.22 to 0.9, preferably from 0.25 to 0.75, even more preferably from 0.25 to 0.7.
  • a ratio between a length of the recess at the distal end and a length of the upstream section may be at least 0.091 .
  • a ratio between a length of the recess at the distal end and a length of the upstream section is at least 0.095. More preferably, a ratio between a length of the recess at the distal end and a length of the upstream section is at least 0.15. Even more preferably, a ratio between a length of the recess at the distal end and a length of the upstream section is at least 0.2.
  • a ratio between a length of the recess at the distal end and a length of the upstream section may be up to 0.5.
  • a ratio between a length of the recess at the distal end and a length of the upstream section is less than or equal to 0.45. More preferably, a ratio between a length of the recess at the distal end and a length of the upstream section is less than or equal to 0.4. Even more preferably, a ratio between a length of the recess at the distal end and a length of the upstream section is less than or equal to 0.35.
  • a ratio between a length of the recess at the distal end and a length of the upstream section is from 0.095 to 0.5, preferably from 0.095 to 0.45, more preferably from 0.095 to 0.4, even more preferably from 0.095 to 0.35.
  • a ratio between a length of the recess at the distal end and a length of the upstream section is from 0.15 to 0.5, preferably from 0.15 to 0.45, more preferably from 0.15 to 0.4, even more preferably from 0.15 to 0.35.
  • a ratio between a length of the recess at the distal end and a length of the upstream section is from 0.2 to 0.5, preferably from 0.2 to 0.45, more preferably from 0.2 to 0.4, even more preferably from 0.2 to 0.35.
  • a content of cellulose acetate in the upstream section may be less than or equal to 50 percent by weight.
  • a content of cellulose acetate in the upstream section is less than or equal to 40 percent by weight. More preferably, a content of cellulose acetate in the upstream section may be less than or equal to 30 percent by weight. Even more preferably, a content of cellulose acetate in the upstream section may be less than or equal to 25 percent by weight.
  • An overall length of an aerosol-generating article according to the present disclosure may be up to 75 millimetres.
  • an overall length of the aerosol-generating article is less than or equal to 70 millimetres. More preferably, an overall length of the aerosol-generating article is less than or equal to 65 millimetres. Even more preferably, an overall length of the aerosolgenerating article is less than or equal to 60 millimetres. In particularly preferred embodiments, an overall length of the aerosol-generating article is less than or equal to 55 millimetres or less than or equal to 50 millimetres, such as for example about 45 millimetres.
  • the aerosol-generating article has an external diameter of at least 4 millimetres.
  • the aerosol-generating article has an external diameter of at least 5 millimetres. More preferably, the aerosol-generating article has an external diameter of at least 6 millimetres. Even more preferably, the aerosol-generating article has an external diameter of at least 7 millimetres.
  • the aerosol-generating article has an external diameter of less than or equal to about 12 millimetres. More preferably, the aerosol-generating article has an external diameter of less than or equal to about 10 millimetres. Even more preferably, the aerosol-generating article has an external diameter of less than or equal to about 8 millimetres.
  • the aerosol-generating article has an external diameter from about 5 millimetres to about 12 millimetres, preferably from about 6 millimetres to about 12 millimetres, more preferably from about 7 millimetres to about 12 millimetres. In other embodiments, the aerosol-generating article has an external diameter from about 5 millimetres to about 10 millimetres, preferably from about 6 millimetres to about 10 millimetres, more preferably from about 7 millimetres to about 10 millimetres.
  • the aerosol-generating article has an external diameter from about 5 millimetres to about 8 millimetres, preferably from about 6 millimetres to about 8 millimetres, more preferably from about 7 millimetres to about 8 millimetres.
  • an aerosol-generating article in accordance with the present disclosure comprises, in linear sequential arrangement, an upstream section comprising a plug element, a rod of aerosol-generating substrate located immediately downstream of the upstream section, a first hollow tubular segment located immediately downstream of the rod of aerosol-generating substrate, a mouthpiece plug element located immediately downstream of the aerosol-cooling element, a hollow tubular element defining a recess at the mouth end, and one or more wrappers circumscribing one or more of the upstream section, the rod of aerosolgenerating substrate, the first hollow tubular segment, the mouthpiece plug element and the mouth end recess-defining hollow tubular element, so as to assemble them into the aerosolgenerating article.
  • an aerosol-generating article in accordance with the present disclosure comprises, in linear sequential arrangement, an upstream section comprising a plug element, a rod of aerosol-generating substrate located immediately downstream of the upstream section, a first hollow tubular segment located immediately downstream of the rod of aerosol-generating substrate, a second hollow tubular segment located immediately downstream of the first hollow tubular segment, a mouthpiece plug element located immediately downstream of the second hollow tubular segment, a hollow tubular element defining a recess at the mouth end, and one or more wrappers circumscribing one or more of the upstream section, the rod of aerosol-generating substrate, the first hollow tubular segment, the second hollow tubular segment, the mouthpiece plug element and the mouth end recess-defining hollow tubular element, so as to assemble them into the aerosol-generating article.
  • one or more wrappers is used herein to encompass different possible arrangements wherein one or more of the components forming the aerosol-generating article may be individually wrapped, and some combination of wrappers and tipping paper are used to attach the various individually wrapped or unwrapped components so as to form the aerosol-generating article.
  • the present disclosure further relates to an aerosol-generating system comprising: an aerosol-generating article in line with the foregoing description; and an aerosol-generating device configured to heat the aerosol-generating substrate of the aerosol-generating article.
  • the aerosol-generating device comprises means for heating the aerosol-generating substrate to a temperature sufficient to generate an aerosol from the aerosol-generating substrate.
  • the aerosol-generating device comprises a housing defining a cavity configured to receive the aerosol-generating article, and means for heating the aerosolgenerating substrate to a temperature sufficient to generate an aerosol from the aerosolgenerating substrate when the aerosol-generating article is received within the cavity.
  • the aerosol-generating device may be a handheld aerosol-generating device.
  • the aerosol-generating device may be an electrically-operated aerosol-generating device.
  • the aerosol-generating device may comprise a power supply and control electronics.
  • the aerosol-generating device may comprise a battery and control electronics.
  • the aerosol-generating device may be configured to heat the aerosol-generating substrate internally. That is, the aerosol-generating device may be configured to supply heat to the aerosol-generating substrate from a location internal to the aerosol-generating article.
  • the aerosol-generating article comprises a susceptor element provided at a location within the rod of aerosol-generating substrate
  • the aerosolgenerating device comprises an inductor coil positioned on or within the housing, a power supply of the aerosol-generating device being connected to the inductor coil and configured to provide a high frequency oscillating current to the inductor coil.
  • the aerosol-generating device may be configured to heat the aerosol-generating substrate externally. That is, the aerosol-generating device may be configured to supply heat to the aerosol-generating substrate from a location external to the aerosol-generating article.
  • the aerosol-generating device comprises a heater element located about a perimeter of the cavity and configured to heat the aerosol-generating substrate of the aerosol-generating article from an exterior of the aerosol-generating element of the aerosolgenerating article.
  • An aerosol-generating article for producing an inhalable aerosol upon heating, the aerosol-generating article extending from a mouth end to a distal end and comprising: a rod of aerosol-generating substrate; a downstream section at a location downstream of the rod of aerosol-generating substrate, the downstream section comprising a mouthpiece at the mouth end; an upstream section at a location upstream of the rod of aerosol-generating substrate; wherein the mouthpiece comprises: a mouthpiece plug element; and a hollow tubular element defining a recess at the mouth end, the hollow tubular element arranged immediately downstream of the mouthpiece plug element and extending longitudinally all the way from an downstream end of the mouthpiece plug element to the mouth end of the aerosol-generating article; wherein the downstream section comprises an internal cavity located upstream of the mouthpiece; wherein a length of the downstream section is less than 50 millimetres; and wherein a ratio between a length of the internal cavity and an overall length of the aerosol-generating article is at least 0.25, and preferably wherein an overall
  • EXAMPLE EX 2 An aerosol-generating article according to example EX 1 , wherein the recess-defining hollow tubular segment comprises a tube formed from a polymeric material or a cellulosic material, the aerosol-generating article further comprising a wrapper circumscribing at least the tube and the mouthpiece plug element.
  • EXAMPLE EX 3 An aerosol-generating article according to example EX 1 , wherein the recess-defining hollow tubular segment comprises a wrapper circumscribing at least the mouthpiece plug element and extending beyond a downstream end of the mouthpiece plug element to define the recess.
  • EXAMPLE EX 4 An aerosol-generating article according to any one of examples EX 1 to EX 3, wherein a peripheral wall of the recess-defining hollow tubular element has a thickness of at least 80 micrometres, preferably at least 100 micrometres.
  • EXAMPLE EX 5. An aerosol-generating article according to any one of examples EX 1 to EX 4, wherein a peripheral wall of the hollow tubular element has a thickness of less than or equal to 140 micrometres.
  • EXAMPLE EX 6 An aerosol-generating article according to any one the preceding examples, wherein a length of the mouthpiece plug element is at least 5 millimetres, preferably at least 10 millimetres.
  • EXAMPLE EX 7 An aerosol-generating article according to any one of the preceding examples, wherein a length of the mouthpiece plug element is less than or equal to 25 millimetres, preferably less than or equal to 17 millimetres.
  • EXAMPLE EX 8 An aerosol-generating article according to any one of the preceding examples, wherein a length of the recess is at least 1 millimetre.
  • EXAMPLE EX 10 An aerosol-generating article according to any one of the preceding examples, wherein a ratio between a length of the mouthpiece plug element and an overall length of the aerosol-generating article is at least 0.077.
  • EXAMPLE EX 11 An aerosol-generating article according to any one of the preceding examples, wherein a ratio between a length of the mouthpiece plug element and an overall length of the aerosol-generating article is less than or equal to 0.222.
  • EXAMPLE EX 12 An aerosol-generating article according to any one of the preceding examples, wherein a ratio between a length of the recess and an overall length of the aerosolgenerating article is at least 0.015.
  • EXAMPLE EX 13 An aerosol-generating article according to any one of the preceding examples, wherein a ratio between a length of the recess and an overall length of the aerosolgenerating article is less than or equal to 0.133.
  • EXAMPLE EX 14 An aerosol-generating article according to any one of the preceding examples, wherein the internal cavity is arranged immediately downstream of the rod of aerosolgenerating substrate and extends longitudinally all the way from a downstream end of the rod of aerosol-generating substrate to an upstream end of the mouthpiece.
  • EXAMPLE EX 15 An aerosol-generating article according to example EX 14, wherein the downstream section comprises at least one hollow tubular member arranged between the rod of aerosol-generating substrate and the mouthpiece, the hollow tubular member defining the internal cavity.
  • EXAMPLE EX 16 An aerosol-generating article according to example EX 15, wherein the at least one hollow tubular member comprises a tube formed of polymeric material or a cellulosic material.
  • EXAMPLE EX 17. An aerosol-generating article according to any one of the preceding examples, wherein a ratio between a length of the internal cavity and an overall length of the aerosol-generating article is at least 0.25.
  • EXAMPLE EX 18 An aerosol-generating article according to any one of the preceding examples, wherein a ratio between a length of the internal cavity and an overall length of the aerosol-generating article is less than or equal to 0.35.
  • EXAMPLE EX 19 An aerosol-generating article according to any one of examples EX 15 to EX 18, wherein the at least one hollow tubular member comprises a support element arranged immediately downstream of the rod of aerosol-generating substrate and an aerosol-cooling element arranged immediately downstream of the support element, wherein a ratio between a length of the support element and an overall length of the aerosol-generating article is less than 0.115.
  • EXAMPLE EX 20 An aerosol-generating article according to any one of the preceding examples, wherein the aerosol-generating substrate comprises a homogenised tobacco material comprising at least 10 percent by weight of an aerosol former.
  • EXAMPLE EX 21 An aerosol-generating article according to any one of the preceding examples, wherein the upstream section comprises: an upstream plug element arranged immediately upstream of the rod of aerosol-generating substrate; and a hollow tubular element defining a distal end recess, upstream of the upstream plug element.
  • EXAMPLE EX 22 An aerosol-generating article according to example EX 21, wherein the distal end recess is located immediately upstream of the upstream plug element and extends longitudinally all the way from an upstream end of the upstream plug element to the distal end of the aerosol-generating article.
  • EXAMPLE EX 23 An aerosol-generating article according to example EX 21 or EX 22, wherein the distal end recess-defining hollow tubular segment comprises a tube formed from a polymeric material or a cellulosic material, the aerosol-generating article further comprising a wrapper circumscribing at least the tube and the upstream plug element.
  • EXAMPLE EX 24 An aerosol-generating article according to example EX 21 or EX 22, wherein the distal end recess-defining hollow tubular segment comprises a wrapper circumscribing at least the upstream plug element and extending beyond an upstream end of the upstream plug element to define the recess.
  • EXAMPLE EX 25 An aerosol-generating article according to any one of the preceding examples further comprising an elongate susceptor arranged longitudinally within the aerosolgenerating substrate.
  • EXAMPLE EX 26 An aerosol-generating article according to any one of the preceding examples further comprising a ventilation zone at a location along the downstream section.
  • EXAMPLE EX 27 An aerosol-generating article according to any one of the preceding examples having an overall length of less than or equal to 65 millimetres.
  • EXAMPLE EX 28 An aerosol-generating article according to any one of the preceding examples wherein a content of cellulose acetate in the mouthpiece is less than 50 percent by weight.
  • EXAMPLE EX 29 An aerosol-generating article according to any one of the preceding examples wherein a content of cellulose acetate in the upstream section is less than 50 percent by weight.
  • EXAMPLE EX 30 An aerosol-generating article according to any one of the preceding examples wherein the mouthpiece plug element comprises filtration material.
  • EXAMPLE EX 31 An aerosol-generating system for producing an inhalable aerosol, the system comprising: an aerosol-generating article according to any one of examples EX 1 to EX 30, and an aerosol-generating device comprising a heating arrangement configured to heat at least a portion of the aerosol-generating substrate to generate an aerosol.
  • Figure 1 shows a schematic side sectional view of an aerosol-generating article in accordance with an embodiment of the invention
  • Figure 2 shows a schematic side sectional view of another aerosol-generating article in accordance with another embodiment of the invention.
  • Figure 3 shows a schematic side sectional view of another aerosol-generating article in accordance with a further embodiment of the invention.
  • the aerosol-generating article 10 shown in Figure 1 comprises a rod 12 of aerosolgenerating substrate 12 and a downstream section 14 at a location downstream of the rod 12 of aerosol-generating substrate. Further, the aerosol-generating article 10 comprises an upstream section 16 at a location upstream of the rod 12 of aerosol-generating substrate.
  • the aerosol-generating article 10 extends from an upstream or distal end 18 to a downstream or mouth end 20, and has an overall length of about 45 millimetres.
  • the downstream section 14 comprises a support element 22 located immediately downstream of the rod 12 of aerosol-generating substrate, the support element 22 being in longitudinal alignment with the rod 12.
  • the upstream end of the support element 18 abuts the downstream end of the rod 12 of aerosol-generating substrate.
  • the downstream section 14 comprises an aerosol-cooling element 24 located immediately downstream of the support element 22, the aerosol-cooling element 24 being in longitudinal alignment with the rod 12 and the support element 22.
  • the upstream end of the aerosol-cooling element 24 abuts the downstream end of the support element 22.
  • the support element 22 and the aerosol-cooling element 24 together define an intermediate hollow section 50 of the aerosol-generating article 10.
  • the support element 22 comprises a first hollow tubular segment 26.
  • the first hollow tubular segment 26 is provided in the form of a hollow cylindrical tube, which comprises a cellulosic fibrous material.
  • the first hollow tubular segment 26 defines an internal cavity 28 that extends all the way from an upstream end 30 of the first hollow tubular segment to an downstream end 32 of the first hollow tubular segment 20.
  • the internal cavity 28 is substantially empty, and so substantially unrestricted airflow is enabled along the internal cavity 28.
  • the first hollow tubular segment 26 has a length of about 8 millimetres, an external diameter of about 7.25 millimetres, and an internal diameter of about 1.9 millimetres. Thus, a thickness of a peripheral wall of the first hollow tubular segment 26 is about 2.67 millimetres.
  • the aerosol-cooling element 24 comprises a second hollow tubular segment 34.
  • the second hollow tubular segment 34 is provided in the form of a hollow cylindrical tube made of filtration material.
  • the second hollow tubular segment 34 defines an internal cavity 36 that extends all the way from an upstream end 38 of the second hollow tubular segment to a downstream end 40 of the second hollow tubular segment 34.
  • the internal cavity 36 is substantially empty, and so substantially unrestricted airflow is enabled along the internal cavity 36.
  • the second hollow tubular segment 34 has a length of about 8 millimetres, an external diameter of about 7.25 millimetres, and an internal diameter of about 3.25 millimetres. Thus, a thickness of a peripheral wall of the second hollow tubular segment 34 is about 2 millimetres.
  • the aerosol-generating article 10 comprises a ventilation zone 60 provided at a location along the second hollow tubular segment 34.
  • the ventilation zone is provided at about 2 millimetres from the upstream end of the second hollow tubular segment 34.
  • a ventilation level of the aerosol-generating article 10 is about 25 percent.
  • the downstream section 14 further comprises a mouthpiece 42 at a location downstream of the intermediate hollow section 50.
  • the mouthpiece 42 is positioned immediately downstream of the aerosol-cooling element 24. As shown in the drawing of Figure 2, an upstream end of the mouthpiece 42 abuts the downstream end 40 of the aerosol-cooling element 18.
  • the mouthpiece 42 comprises a cylindrical plug element 44 comprising a cellulosic fibrous material.
  • the plug element 44 has a length of about 7 millimetres and an external diameter of about 7.25 millimetres.
  • the upstream end of the plug element 44 abuts a downstream end of the second hollow tubular segment 34.
  • the mouthpiece 42 comprises a hollow tubular element 62 arranged immediately downstream of the plug element 44.
  • the downstream end of the plug element 44 abuts the upstream end of the hollow tubular element 62.
  • the hollow tubular element 62 internally defines a recess 64 that is located immediately downstream of the plug element 44 and extends longitudinally all the way from a downstream end of the plug element 44 to a downstream end or mouth end of the aerosol-generating article 80.
  • a peripheral wall of the downstream recess-defining hollow tubular element 62 has a thickness of 0.5 millimetres.
  • a length of the recess-defining hollow tubular element 62 is 5 millimetres.
  • the rod 12 comprises an aerosol-generating substrate of one of the types described above.
  • the rod 12 of aerosol-generating substrate has an external diameter of about 7.25 millimetres and a length of about 12 millimetres.
  • the aerosol-generating article 10 further comprises an elongate susceptor 46 within the rod 12 of aerosol-generating substrate.
  • the susceptor 46 is arranged substantially longitudinally within the aerosol-generating substrate, such as to be approximately parallel to the longitudinal direction of the rod 12.
  • the susceptor 46 is positioned in a radially central position within the rod and extends effectively along the longitudinal axis of the rod 12.
  • the susceptor 46 is in thermal contact with the aerosolgenerating substrate.
  • the susceptor 46 extends all the way from an upstream end to a downstream end of the rod 12. In effect, the susceptor 46 has substantially the same length as the rod 12 of aerosol-generating substrate.
  • the susceptor 46 is provided in the form of a strip and has a length of about 12 millimetres, a thickness of about 60 micrometres, and a width of about 4 millimetres.
  • the upstream section 16 comprises a plug element 48 located immediately upstream of the rod 12 of aerosol-generating substrate.
  • the plug element 48 is in longitudinal alignment with the rod 12.
  • downstream end of the upstream plug element 48 abuts the upstream end of the rod 12 of aerosol-generating substrate. This advantageously prevents the susceptor 46 from being dislodged. Further, this ensures that the consumer cannot accidentally contact the heated susceptor 46 after use.
  • the upstream plug element 48 is provided in the form of cylindrical segment of cellulosic fibrous material circumscribed by a wrapper 52.
  • the segment 48 has a length of about 6 millimetres and a diameter of about 7.25 millimetres.
  • the upstream section 16 comprises a hollow tubular element 56 defining a recess 58 at the distal end, upstream of the plug element 48.
  • the recess 58 is located immediately upstream of the plug element 48 and extends longitudinally all the way from the upstream end of the plug element 48 to the distal end 18 of the aerosolgenerating article 10.
  • a peripheral wall of the recess-defining hollow tubular element 56 has a thickness of 0.125 millimetres.
  • a length of the recess-defining hollow tubular element 56 is 3 millimetres.
  • the aerosol-generating article 10 further comprises a combining wrapper 54 which attaches the upstream element 48 and the recess-defining hollow tubular element 56 to the remaining components of the aerosol-generating article 10.
  • a single combining wrapper 54 is depicted, which circumscribes and holds together the upstream section 16, the rod 12, and the downstream section 14 to form the aerosol-generating article 10.
  • the aerosol-generating article 10 further comprises a wrapper 70 circumscribing the rod 12 of aerosol-generating substrate.
  • the wrapper 70 is separate and distinct from the first wrapper 52 circumscribing the segment of material 50.
  • the aerosol-generating article 80 shown in Figure 2 is similar to the aerosol-generating article 10 of Figure 1. In the following, the aerosol-generating article 80 will only be described insofar as it differs from the aerosol-generating article 10.
  • the upstream section 16 comprises a plug element 48 located immediately upstream of the rod 12 of aerosol-generating substrate.
  • the plug element 48 is in longitudinal alignment with the rod 12.
  • the upstream plug element 48 is provided in the form of cylindrical segment of cellulosic fibrous material circumscribed by a wrapper 52.
  • the segment 48 has a length of about 8 millimetres and a diameter of about 7.25 millimetres.
  • the upstream section 16 does not comprise any further component upstream of the plug element 48.
  • the plug element 48 extends longitudinally all the way from an upstream end of the rod 12 of aerosol-generating substrate to the distal end 18 of the aerosol-generating article 10.
  • the aerosol-generating article 100 shown in Figure 3 comprises a rod of aerosolgenerating substrate 112 and a downstream section 114 at a location downstream of the rod 112 of aerosol-generating substrate. Additionally, the aerosol-generating article 100 comprises an upstream section 116. Thus, the aerosol-generating article 100 extends from an upstream or distal end 118 - which substantially coincides with an upstream end of the upstream section 116 - to a downstream or mouth end 120, which coincides with a downstream end of the downstream section 114.
  • the aerosol-generating article 1 has an overall length of about 45 millimetres and an outer diameter of about 7.2 mm.
  • the rod of aerosol-generating substrate 112 comprises a shredded tobacco material.
  • the rod of aerosol-generating substrate 112 comprises 150 milligrams of a shredded tobacco material comprising from 13 percent by weight to 16 percent by weight of glycerine.
  • the rod of aerosolgenerating substrate 112 is individually wrapped by a plug wrap (not shown).
  • the downstream section 114 comprises a hollow tubular element 122 and a mouthpiece 124.
  • the hollow tubular element 122 is located immediately downstream of the rod 112 of aerosol-generating substrate, the hollow tubular element 122 being in longitudinal alignment with the rod 112. The upstream end of the hollow tubular element 122 abuts the downstream end of the rod 112 of aerosol-generating substrate.
  • the hollow tubular element 122 defines a hollow section of the aerosol-generating article 110.
  • the hollow tubular element 122 does not substantially contribute to the overall RTD of the aerosol-generating article.
  • an RTD of the hollow tubular element 122 is about 0 mm H2O.
  • the hollow tubular element 122 is provided in the form of a hollow cylindrical tube, which is made of cardboard.
  • the hollow tubular element 122 defines an internal cavity that extends all the way from an upstream end of the hollow tubular element 122 to a downstream end of the hollow tubular element 122.
  • the internal cavity is substantially empty, and so substantially unrestricted airflow is enabled along the internal cavity.
  • the hollow tubular element 122 has a length of about 21 millimetres, an external diameter of about 7.2 millimetres, and an internal diameter of about 6.7 millimetres. Thus, a thickness of a peripheral wall of the hollow tubular element 122 is about 0.25 millimetres.
  • the aerosol-generating article 100 comprises a ventilation zone 160 provided at a location along the hollow tubular element 122.
  • the ventilation zone 160 comprises a circumferential row of openings or perforations circumscribing the hollow tubular element 122.
  • the perforations of the ventilation zone 160 extend through the wall of the hollow tubular element 122, in order to allow fluid ingress into the internal cavity from the exterior of the article 100.
  • a ventilation level of the aerosol-generating article 10 is about 16 percent.
  • the mouthpiece 124 extends from the downstream end of the hollow tubular element 122 to the downstream or mouth end of the aerosol-generating article 100.
  • the mouthpiece 124 comprises a cylindrical plug element 150 comprising a cellulosic fibrous material.
  • the plug element 150 has a length of about 5 millimetres and an external diameter of about 7.25 millimetres.
  • the upstream end of the plug element 150 abuts a downstream end of the hollow tubular element 122.
  • the mouthpiece 124 comprises a hollow tubular element 162 arranged immediately downstream of the plug element 150.
  • the downstream end of the plug element 150 abuts the upstream end of the hollow tubular element 162.
  • the hollow tubular element 162 internally defines a mouth end recess 164 that is located immediately downstream of the plug element 150 and extends longitudinally all the way from a downstream end of the plug element 150 to a downstream end or mouth end of the aerosol-generating article 100.
  • the hollow tubular element 162 has a length of 3 millimetres.
  • a peripheral wall of the hollow tubular element 162 has a thickness of 0.5 millimetres.
  • the upstream section 116 comprises an upstream plug element 124 located immediately upstream of the rod 112 of aerosol-generating substrate, the upstream plug element 124 being in longitudinal alignment with the rod 112. The downstream end of the upstream plug element 124 abuts the upstream end of the rod 112 of aerosol-generating substrate.
  • the upstream plug element 124 is provided in the form of a segment of cellulosic fibrous material.
  • the upstream plug element 124 has a length of about 3 millimetres.
  • An external diameter of the upstream plug element 124 is about 7.1 mm.
  • the upstream section comprises a hollow tubular element 126 defining a recess 128 at the distal end, upstream of the plug element 124.
  • the recess 128 is located immediately upstream of the upstream plug element 124 and extends longitudinally all the way from the upstream end of the upstream plug element 124 to the distal end 118 of the aerosol-generating article 100.
  • a peripheral wall of the recess-defining hollow tubular element 126 has a thickness of 0.125 millimetres.
  • a length of the recess-defining hollow tubular element 126 is 3 millimetres.

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  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

Un article de génération d'aérosol (10) permettant de produire un aérosol inhalable lors du chauffage s'étend d'une extrémité buccale (20) à une extrémité distale et comprend : une tige de substrat de génération d'aérosol (12); une section aval à un emplacement en aval de la tige (12) de substrat de génération d'aérosol, la section aval (114) comportant un embout buccal au niveau de l'extrémité buccale (42); et une section amont (16) à un emplacement en amont de la tige de substrat de génération d'aérosol (12). L'embout buccal comporte : un élément bouchon (150) d'embout buccal; et un élément tubulaire creux (56) définissant un évidement (58) au niveau de l'extrémité buccale, l'élément tubulaire creux (56) étant disposé immédiatement en aval de l'élément bouchon (150) d'embout buccal et s'étendant longitudinalement tout le long de l'extrémité aval de l'élément bouchon (150) d'embout buccal à l'extrémité buccale de l'article de génération d'aérosol (10). La section aval (114) comprend une cavité interne (36) située en amont de l'embout buccal (42), une longueur de la section aval (114) est inférieure à 50 millimètres, un rapport entre une longueur de la cavité interne et une longueur totale de l'article de génération d'aérosol (10) est d'au moins 0,25, et une longueur globale de l'article de génération d'aérosol (10) est inférieure ou égale à 60 millimètres.
PCT/EP2025/068892 2024-07-05 2025-07-02 Article de génération d'aérosol avec évidement d'extrémité buccale Pending WO2026008733A1 (fr)

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EP24186958 2024-07-05
EP24186958.5 2024-07-05

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WO2026008733A1 true WO2026008733A1 (fr) 2026-01-08

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140238427A1 (en) * 2011-10-21 2014-08-28 Philip Morris Products S.A. Smoking article having a mouth end cavity with indicia
WO2015176898A1 (fr) 2014-05-21 2015-11-26 Philip Morris Products S.A. Article produisant un aérosol avec suscepteur interne
WO2020207733A1 (fr) 2019-04-08 2020-10-15 Philip Morris Products S.A. Substrat de génération d'aérosol comprenant un film de génération d'aérosol
WO2021170642A1 (fr) 2020-02-28 2021-09-02 Philip Morris Products S.A. Article de génération d'aérosol comprenant un substrat avec une composition de gel
WO2022074157A1 (fr) 2020-10-07 2022-04-14 Philip Morris Products S.A. Substrat de formation d'aérosol
KR20230049788A (ko) * 2021-10-06 2023-04-14 주식회사 케이티앤지 에어로졸 발생 물품 및 이와 함께 사용되는 에어로졸 발생 장치
WO2023198760A1 (fr) * 2022-04-12 2023-10-19 Philip Morris Products S.A. Article de génération d'aérosol avec section aval

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140238427A1 (en) * 2011-10-21 2014-08-28 Philip Morris Products S.A. Smoking article having a mouth end cavity with indicia
WO2015176898A1 (fr) 2014-05-21 2015-11-26 Philip Morris Products S.A. Article produisant un aérosol avec suscepteur interne
WO2020207733A1 (fr) 2019-04-08 2020-10-15 Philip Morris Products S.A. Substrat de génération d'aérosol comprenant un film de génération d'aérosol
WO2021170642A1 (fr) 2020-02-28 2021-09-02 Philip Morris Products S.A. Article de génération d'aérosol comprenant un substrat avec une composition de gel
WO2022074157A1 (fr) 2020-10-07 2022-04-14 Philip Morris Products S.A. Substrat de formation d'aérosol
KR20230049788A (ko) * 2021-10-06 2023-04-14 주식회사 케이티앤지 에어로졸 발생 물품 및 이와 함께 사용되는 에어로졸 발생 장치
WO2023198760A1 (fr) * 2022-04-12 2023-10-19 Philip Morris Products S.A. Article de génération d'aérosol avec section aval

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