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WO2025133331A1 - Article de génération d'aérosol présentant un rapport de longueurs élevé de substrat de génération d'aérosol - Google Patents

Article de génération d'aérosol présentant un rapport de longueurs élevé de substrat de génération d'aérosol Download PDF

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Publication number
WO2025133331A1
WO2025133331A1 PCT/EP2024/088226 EP2024088226W WO2025133331A1 WO 2025133331 A1 WO2025133331 A1 WO 2025133331A1 EP 2024088226 W EP2024088226 W EP 2024088226W WO 2025133331 A1 WO2025133331 A1 WO 2025133331A1
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WO
WIPO (PCT)
Prior art keywords
aerosol
generating
rod
substrate
article
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/EP2024/088226
Other languages
English (en)
Inventor
Özgür ÖZSUN
Enrico TURRINI
Gérard Edmond ZUBER
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 WO2025133331A1 publication Critical patent/WO2025133331A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/20—Devices using solid inhalable precursors

Definitions

  • the present invention relates to an aerosol-generating article comprising a rod of aerosolgenerating substrate for generating an inhalable aerosol upon heating.
  • the present invention also relates to an aerosol-generating system comprising an aerosol-generating article and an aerosolgenerating device configured to heat the aerosol-generating article.
  • the present invention also relates to a container comprising a plurality of aerosol-generating articles.
  • Aerosol-generating articles in which an aerosol-generating substrate comprising aerosolgenerating material, such as a tobacco-containing material, is heated rather than combusted are known in the art.
  • An aim of such ‘heated’ aerosol-generating articles is to reduce certain smoke constituents of the type produced by the combustion and pyrolytic degradation of tobacco in conventional cigarettes.
  • an aerosol is generated by the transfer of heat from a heat source to a physically separate aerosol-generating substrate.
  • volatile compounds are released from the aerosol-generating substrate by heat transfer from the heat source to the aerosol-generating substrate and are entrained in air drawn through the aerosolgenerating article. As the released compounds cool, they condense to form an aerosol that is inhaled by the user.
  • a number of handheld aerosol-generating devices configured to heat aerosol-generating substrates of heated aerosol-generating articles are known in the art. These include electrically- operated aerosol-generating devices in which an aerosol is generated by the transfer of heat from one or more electrical heating elements of the aerosol-generating device to the aerosolgenerating substrate of the heated aerosol-generating article.
  • Known handheld electrically operated aerosol-generating devices typically comprise a battery, control electronics and one or more electrical heating elements for heating the aerosol-generating substrate of a heated aerosolgenerating article designed specifically for use with the aerosol-generating device.
  • Some known electrically-operated aerosol-generating devices comprise one or more external heating elements.
  • WO 2020/115151 A1 discloses an aerosol-generating system comprising an aerosol-generating article and an electrically-operated aerosol-generating device comprising an external heating element that circumscribes the outer periphery of the aerosol-generating article.
  • Other known electrically-operated aerosol-generating devices comprise an internal heating element that is configured to be inserted into the aerosol-generating substrate of a heated aerosol-generating article.
  • Electrically-operated aerosol-generating devices comprising an inductor configured to inductively heat aerosol-generating substrates of heated aerosol-generating articles are also known.
  • Heated aerosol-generating articles designed for use with an aerosol-generating device typically comprise a plurality of elements in addition to the aerosol-generating substrate.
  • aerosol-generating articles comprising a mouthpiece element located downstream of the aerosol-generating substrate are known.
  • the mouthpiece element is typically configured to filter aerosol generated by the aerosol-generating substrate, and to provide the aerosolgenerating article with a suitable resistance to draw.
  • Aerosol-generating articles comprising an aerosol-cooling element located downstream of the aerosol-generating substrate are also known.
  • the hollow tubular element may act as an aerosol cooling element to help cool the aerosol generated by the aerosol-generating substrate.
  • Aerosol-generating articles comprising an upstream element located upstream of the aerosol-generating substrate are also known.
  • the upstream element may be configured to reduce or prevent dislodgement of aerosol-generating substrate material of the aerosol-generating substrate.
  • Variations in each element of the aerosol-generating article may affect the quality and consistency of aerosol generated and delivered to a user. For instance, manufacturing defects in the mouthpiece element, the hollow tubular element, or any other element of the aerosolgenerating article may affect, for example, the resistance to draw of the aerosol-generating article, the temperature of aerosol delivered to a user, and the composition of the aerosol delivered to a user. Inconsistencies in the user experience between one aerosol-generating article and another aerosol-generating article may be pronounced in aerosol-generating articles comprising a plurality of elements.
  • the manufacture of each element of the aerosol-generating article and the assembly of the plurality of elements to form the aerosol-generating article may present manufacturing challenges.
  • the inclusion of a plurality of elements in the aerosol-generating article for different purposes may increase the size and weight of the aerosol-generating article. This may create problems associated with storage and transport of the aerosol-generating articles and packs or containers of the aerosol-generating articles.
  • Aerosol-generating articles are typically disposed of following use of the aerosolgenerating article. Disposal of aerosol-generating articles comprising a plurality of elements may not be straightforward and may be wasteful. This may particularly be the case where some elements of the aerosol-generating article are not biodegradable or recyclable.
  • the present disclosure relates to an aerosol-generating article comprising a rod of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may comprise nicotine.
  • the rod of aerosol-generating substrate may comprise an aerosol former.
  • the rod of aerosolgenerating substrate may have a total aerosol-former content of at least about 10 percent by weight on a dry weight basis.
  • the aerosol-generating article may comprise an upstream section located upstream of the rod of aerosol-generating substrate.
  • the aerosol-generating article may have a length of less than or equal to about 55 millimetres, less than or equal to about 50 millimetres, less than or equal to about 45 millimetres, or less than or equal to about 40 millimetres.
  • a ratio of the length of the rod of aerosol-generating substrate to the length of the aerosol-generating article may be at least about 0.5, at least about 0.6, at least about 0.65, at least about 0.7, or at least about 0.75.
  • the aerosol-generating article may comprise: a rod of aerosol-generating substrate, the rod of aerosol-generating substrate comprising nicotine and having a total aerosol former content of at least about 10 percent by weight on a dry weight basis; and an upstream section located upstream of the rod of aerosol-generating substrate, wherein the aerosolgenerating article has a length of less than or equal to about 40 millimetres, and wherein a ratio of the length of the rod of aerosol-generating substrate to the length of the aerosol-generating article is at least about 0.5, at least about 0.6, at least about 0.65, at least about 0.7, or at least about 0.75.
  • an aerosol-generating article comprising: a rod of aerosol-generating substrate comprising nicotine and having a total aerosol former content of at least about 10 percent by weight on a dry weight basis; and an upstream section located upstream of the rod of aerosol-generating substrate, wherein the aerosolgenerating article has a length of less than or equal to about 40 millimetres, and wherein a ratio of the length of the rod of aerosol-generating substrate to the length of the aerosol-generating article is at least about 0.65.
  • the present disclosure also relates to an aerosol-generating system comprising an aerosol-generating article and an aerosol-generating device.
  • the aerosol-generating article comprises a rod of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may comprise nicotine.
  • the rod of aerosol-generating substrate may comprise an aerosol former.
  • the rod of aerosol-generating substrate may have a total aerosol-former content of at least about 10 percent by weight on a dry weight basis.
  • the aerosol-generating article may have a length of less than or equal to about 55 millimetres, less than or equal to about 50 millimetres, less than or equal to about 45 millimetres, or less than or equal to about 40 millimetres.
  • a ratio of the length of the rod of aerosol-generating substrate to the length of the aerosol-generating article may be at least about 0.5, at least about 0.6, at least about 0.65, at least about 0.7, or at least about 0.75.
  • the aerosol-generating device may comprise a heating chamber for receiving the aerosol-generating article.
  • the aerosol-generating device may comprise a heater for heating the rod of aerosolgenerating substrate of the aerosol-generating article when the aerosol-generating article is received within the heating chamber.
  • the heating chamber of the aerosol-generating device may have a length of within about 10 percent of the length of the aerosol-generating article.
  • the aerosol-generating system may comprise: an aerosol-generating system comprising: an aerosol-generating article and an aerosol-generating device, wherein the aerosolgenerating article comprises a rod of aerosol-generating substrate, the rod of aerosol-generating substrate comprising nicotine and having a total aerosol former content of at least about 10 percent by weight on a dry weight basis, wherein the aerosol-generating article has a length of less than or equal to about 40 millimetres, wherein a ratio of the length of the rod of aerosolgenerating substrate to the length of the aerosol-generating article is at least about 0.5, at least about 0.6, at least about 0.65, at least about 0.7, or at least about 0.75, wherein the aerosolgenerating device comprises a heating chamber for receiving the aerosol-generating article and a heater for heating the rod of aerosol-generating substrate of the aerosol-generating article when the aerosol-generating article is received within the heating system, and wherein the heating chamber of the aerosol-generating device has a length of within about 10 percent of the length of the aerosol
  • an aerosol-generating system comprising: an aerosol-generating article and an aerosol-generating device, wherein the aerosol-generating article comprises a rod of aerosol-generating substrate, the rod of aerosolgenerating substrate comprising nicotine and having a total aerosol former content of at least about 10 percent by weight on a dry weight basis, wherein the aerosol-generating article has a length of less than or equal to about 40 millimetres, wherein a ratio of the length of the rod of aerosol-generating substrate to the length of the aerosol-generating article is at least about 0.65, wherein the aerosol-generating device comprises a heating chamber for receiving the aerosolgenerating article and a heater for heating the rod of aerosol-generating substrate of the aerosolgenerating article when the aerosol-generating article is received within the heating system, and wherein the heating chamber of the aerosol-generating device has a length of within about 10 percent of the length of the aerosol-generating article.
  • the aerosol-generating article of the aerosol-generating system according to the second aspect of the invention may comprise any of the features of the aerosol-generating article described herein.
  • the present disclosure also relates to a container comprising a plurality of aerosolgenerating articles.
  • Each of the plurality of aerosol-generating articles comprises a rod of aerosolgenerating substrate.
  • the rod of aerosol-generating substrate of each of the plurality of aerosol-generating articles may comprise nicotine.
  • the rod of aerosol-generating substrate of each of the plurality of aerosol-generating articles may comprise an aerosol former.
  • the rod of aerosolgenerating substrate of each of the plurality of aerosol-generating articles may have an aerosolformer content of at least about 10 percent by weight on a dry weight basis.
  • Each of the plurality of aerosol-generating articles may have a length of less than or equal to about 55 millimetres, less than or equal to about 50 millimetres, less than or equal to about 45 millimetres, or less than or equal to about 40 millimetres.
  • Each of the plurality of aerosol-generating articles may have a ratio of the length of the rod of aerosol-generating substrate to the length of the aerosol-generating article of at least about 0.5, at least about 0.6, at least about 0.65, at least about 0.7, or at least about 0.75.
  • the container may comprise a plurality of aerosol-generating articles, wherein each of the plurality of aerosol-generating articles comprises a rod of aerosol-generating substrate, the rod of aerosol-generating substrate comprising nicotine and having a total aerosol former content of at least about 10 percent by weight on a dry weight basis, wherein each of the plurality of aerosol-generating articles has a length of less than or equal to about 40 millimetres, and wherein each of the plurality of aerosol-generating articles has a ratio of the length of the rod of aerosol-generating substrate to the length of the aerosol-generating article of at least about 0.5, at least about 0.6, at least about 0.65, at least about 0.7, or at least about 0.75.
  • a container comprising a plurality of aerosol-generating articles, wherein each of the plurality of aerosol-generating articles comprises a rod of aerosol-generating substrate comprising nicotine and having a total aerosol former content of at least about 10 percent by weight on a dry weight basis, wherein each of the plurality of aerosol-generating articles has a length of less than or equal to about 40 millimetres, and wherein each of the plurality of aerosol-generating articles has a ratio of the length of the rod of aerosol-generating substrate to the length of the aerosol-generating article of at least about 0.65.
  • Each of the plurality of aerosol-generating articles of the container according to the third aspect of the invention may comprise any of the features of the aerosol-generating article described herein.
  • aerosol-generating article is used to describe an article comprising an aerosol-generating substrate that is heated to generate an inhalable aerosol for delivery to a user.
  • aerosol-generating substrate is used to describe a substrate comprising aerosol-generating material that is capable of releasing upon heating volatile compounds that can generate an aerosol.
  • aerosol is used to describe 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.
  • the aerosol 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.
  • aerosol-generating device is used to describe a device that interacts with the aerosol-generating substrate of the aerosolgenerating article to generate an aerosol.
  • Aerosol-generating articles according to the invention have a proximal end through which, in use, an aerosol exits the aerosol-generating article for delivery to a user.
  • the proximal end of the aerosol-generating article may also be referred to as the downstream end or mouth end of the aerosol-generating article.
  • a user draws directly or indirectly on the proximal end of the aerosol-generating article in order to inhale an aerosol generated by the aerosol-generating article.
  • Aerosol-generating articles according to the invention have a distal end.
  • the distal end is opposite the proximal end.
  • the distal end of the aerosol-generating article may also be referred to as the upstream end of the aerosol-generating article.
  • Components of aerosol-generating articles according to the invention may be described as being upstream or downstream of one another based on their relative positions between the proximal end of the aerosol-generating article and the distal end of the aerosol-generating article.
  • the term “longitudinal” is used to describe the direction between the proximal end and the distal end of the aerosol-generating article.
  • the term “length” is used to describe the maximum dimension of the aerosol-generating article or a component of the aerosol-generating article or the aerosol-generating device or a component of the aerosol-generating device in the longitudinal direction.
  • 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 a component of the aerosol-generating article or the aerosol-generating device or a component of the aerosol-generating device refer to the transverse cross-section.
  • the term “width” denotes the maximum dimension of the aerosol-generating article or a component of the aerosol-generating article or the aerosol-generating device or a component of the aerosol-generating device in a transverse direction.
  • the width of the aerosol-generating article corresponds to the diameter of the aerosol-generating article.
  • the width of the component of the aerosol-generating article corresponds to the diameter of the component of the aerosol-generating article.
  • the width of the aerosol-generating device has a substantially circular cross-section
  • the width of the aerosol-generating device corresponds to the diameter of the aerosol-generating article.
  • the width of the component of the aerosol-generating device corresponds to the diameter of the component of the aerosol-generating article.
  • total aerosol former content is used to describe the combined content of all aerosol formers in the aerosol-generating substrate.
  • the inventors of the present invention have found that the function of some elements of prior art aerosol-generating articles may be provided by an aerosol-generating device.
  • the inventors of the present invention have found that it may be possible to provide an aerosol-generating device with functionality to suitably cool and filter aerosol generated by an aerosol-generating substrate and which provides a significant amount of the resistance to draw (RTD) of the aerosol-generating system.
  • RTD resistance to draw
  • An aerosol-generating article having a length of less than or equal to about 40 millimetres and comprising a rod of aerosol-generating substrate having a length of at least about 65% of the length of the aerosol-generating article may mean that the rod of aerosol-generating substrate forms at least the majority of the aerosol-generating article. This may reduce or avoid the effect of any variations in any additional element of the aerosol-generating article (where present) on the aerosol delivered to a user. This may improve the consistency of aerosol delivered to the user between one aerosol-generating article and another aerosol-generating article.
  • An aerosol-generating article having a length of less than or equal to about 40 millimetres and comprising a rod of aerosol-generating substrate having a length of at least about 65% of the length of the aerosol-generating article may mean that the majority of the aerosol-generating article may be available to generate aerosol. This may improve the efficiency of the aerosolgenerating article.
  • An aerosol-generating article having a length of less than or equal to about 40 millimetres and comprising a rod of aerosol-generating substrate having a length of at least about 65% of the length of the aerosol-generating article may be relatively compact. This may improve the efficiency of storage and transport of the aerosol-generating articles and packs or containers of the aerosol-generating articles compared to known aerosol-generating articles.
  • a ratio of the length of the rod of aerosol-generating substrate to the length of the aerosolgenerating article may be at least about 0.5, at least about 0.6, at least about 0.65, at least about 0.7, at least about 0.75, at least about 0.8, at least about 0.85, or at least about 0.9.
  • Increasing the ratio of the length of the rod of aerosol-generating substrate to the length of the aerosol-generating article may further improve the consistency of aerosol delivered to the user and the efficiency of the aerosol-generating article.
  • the rod of aerosol-generating substrate may extend the entire length of the aerosolgenerating article.
  • a ratio of the length of the rod of aerosol-generating substrate to the length of the aerosol-generating article may be less than or equal to about 0.95.
  • the aerosol-generating article may have a length of less than or equal to about 55 millimetres, less than or equal to about 50 millimetres, less than or equal to about 45 millimetres, less than or equal to about 40 millimetres, less than or equal to about 35 millimetres, less than or equal to about 30 millimetres, or less than or equal to about 25 millimetres.
  • the aerosol-generating article may have a length of at least about 8 millimetres, at least about 10 millimetres, or at least about 12 millimetres.
  • the length of the aerosol-generating article may be selected based on a desired balance between the efficiency of storage and transport of the aerosol-generating articles and the amount of aerosol-generating material in the aerosol-generating article to provide a desired aerosol delivery experience.
  • the aerosol-generating article may have a length of between about 8 millimetres and about 55 millimetres, between about 8 millimetres and about 50 millimetres, between about 8 millimetres and about 45 millimetres, between about 8 millimetres and about 40 millimetres, between about 8 millimetres and about 35 millimetres, between about 8 millimetres and about 30 millimetres, or between about 8 millimetres and about 25 millimetres.
  • the aerosol-generating article may have a length of between about 10 millimetres and about 55 millimetres, between about 10 millimetres and about 50 millimetres, between about 10 millimetres and about 45 millimetres, between about 10 millimetres and about 40 millimetres, between about 10 millimetres and about 35 millimetres, between about 10 millimetres and about 30 millimetres, or between about 10 millimetres and about 25 millimetres.
  • the aerosol-generating article may have a length of between about 12 millimetres and about 55 millimetres, between about 12 millimetres and about 50 millimetres, between about 12 millimetres and about 45 millimetres, between about 12 millimetres and about 40 millimetres, between about 12 millimetres and about 35 millimetres, between about 12 millimetres and about 30 millimetres, or between about 12 millimetres and about 25 millimetres.
  • the aerosol-generating article is substantially prismatic in shape.
  • the aerosolgenerating article may have a substantially constant cross-sectional shape along its entire length.
  • the aerosol-generating article has a substantially circular cross-section.
  • the aerosol-generating article may be substantially cylindrical.
  • the aerosol-generating article may have a diameter of at least about 5 millimetres, at least about 6 millimetres, or at least about 7 millimetres.
  • the aerosol-generating article may have a diameter of less than or equal to about 12 millimetres, less than or equal to about 10 millimetres, or less than or equal to about 8 millimetres.
  • the aerosol-generating article may have a diameter of between about 5 millimetres and about 8 millimetres.
  • the aerosol-generating article has a substantially constant diameter along its entire length.
  • a ratio of the length of the aerosol-generating article to the diameter of the aerosolgenerating article may be less than or equal to about 6, less than or equal to about 5, or less than or equal to about 4. Decreasing the ratio of the length of the aerosol-generating article to the diameter of the aerosol-generating article may result in a more compact aerosol-generating article, which may be advantageous for storage and transport of the aerosol-generating article.
  • a ratio of the length of the aerosol-generating article to the diameter of the aerosolgenerating article may be at least about 1 , or at least about 1.5.
  • a ratio of the length of the aerosol-generating article to the diameter of the aerosolgenerating article may be between about 1 and about 6, between about 1 and about 5, or between about 1 and about 4.
  • a ratio of the length of the aerosol-generating article to the diameter of the aerosolgenerating article may be between about 1.5 and about 6, between about 1.5 and about 5, or between about 1.5 and about 4.
  • the aerosol-generating article may have a substantially rectangular cross-section.
  • the aerosol-generating article may be substantially cuboidal.
  • the aerosol-generating article may be a planar aerosol-generating article.
  • the aerosol-generating article may have an overall RTD of less than or equal to about 40 millimetres H2O, less than or equal to about 35 millimetres H2O, less than or equal to about 30 millimetres H2O, or less than or equal to about 20 millimetres H2O.
  • Decreasing the RTD of the aerosol-generating article may minimise any effect of any variations in the RTD of one aerosol-generating article to another aerosol-generating article. This may improve the consistency of performance of the aerosol-generating articles.
  • Decreasing the RTD of the aerosol-generating article may reduce any filtration of aerosol through the aerosol-generating article. This may improve the aerosol delivery of the aerosolgenerating article.
  • the aerosol-generating article may have an overall RTD of at least about 10 millimetres H 2 O.
  • the rod of aerosol-generating substrate may provide the majority of the RTD of the aerosol-generating article.
  • a ratio of the RTD of the rod of aerosol-generating substrate to the overall RTD of the aerosol-generating article may be at least about 0.8, at least about 0.85, or at least about 0.9.
  • a ratio of the RTD of the rod of aerosol-generating substrate to the overall RTD of the aerosol-generating article may be less than or equal to about 1 .
  • the rod of aerosol-generating substrate may provide substantially all of the RTD of the aerosol-generating article.
  • the resistance to draw (RTD) of the aerosol-generating article or a component of the aerosol-generating article is measured in accordance with ISO 6565-2015 at a volumetric flow rate of about 17.5 millilitres per second at the proximal end or downstream end of the aerosol-generating article or the component thereof at a temperature of about 22 degrees Celsius, a pressure of about 101 kPa (about 760 Torr) and a relative humidity of about 60%.
  • the one or more additional elements may contribute minimally or negligibly to the overall RTD of the aerosol-generating article.
  • the inventors of the invention have found that it may be possible to provide an aerosol-generating device which provides a significant amount of the RTD of the aerosol-generating system. Therefore, it may not be necessary to include an element in the aerosol-generating article to increase the overall RTD of the aerosol-generating article.
  • the rod of aerosol-generating substrate may have a length of at least about 8 millimetres, at least about 10 millimetres, or at least about 12 millimetres.
  • the rod of aerosol-generating substrate may have a length of less than or equal to about 30 millimetres, less than or equal to about 25 millimetres, or less than or equal to about 20 millimetres.
  • the rod of aerosol-generating substrate may have a length of between about 8 millimetres and about 30 millimetres, between about 8 millimetres and about 25 millimetres, or between about 8 millimetres and about 20 millimetres.
  • the rod of aerosol-generating substrate may have a length of between about 10 millimetres and about 30 millimetres, between about 10 millimetres and about 25 millimetres, or between about 10 millimetres and about 20 millimetres.
  • the rod of aerosol-generating substrate may have a length of between about 12 millimetres and about 30 millimetres, between about 12 millimetres and about 25 millimetres, or between about 12 millimetres and about 20 millimetres.
  • the rod of aerosol-generating substrate has a substantially circular crosssection.
  • the rod aerosol-generating substrate may be substantially cylindrical.
  • the rod of aerosol-generating substate has a diameter substantially the same as a diameter of the aerosol-generating article.
  • the rod of aerosol-generating substrate may have a diameter of at least about 5 millimetres, at least about 6 millimetres, or at least about 7 millimetres.
  • the rod of aerosolgenerating substrate may have a diameter of less than or equal to about 12 millimetres, less than or equal to about 10 millimetres, or less than or equal to about 8 millimetres.
  • the rod of aerosol-generating substrate may have a diameter of between about 5 millimetres and about 8 millimetres.
  • the rod of aerosol-generating substrate has a substantially constant diameter along its entire length.
  • the rod of aerosol-generating substrate may have a substantially rectangular crosssection.
  • the rod of aerosol-generating article may be substantially cuboidal.
  • the rod of aerosol-generating substrate may be a planar rod of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may have a base defined by a length extending in an x direction, a width extending in a y direction, and a height extending in a z direction.
  • An airflow path may be defined through the rod of aerosol-generating substrate in an x/y plane from one side of the rod of aerosol-generating substrate to the other side of the rod of aerosolgenerating substrate.
  • the rod of aerosol-generating substrate may comprise a substantially planar upper surface defined by a length extending in the x direction and a width extending in the y direction, and a substantially planar lower surface defined by a length extending in the x direction and a width extending in the y direction.
  • the substantially planar upper surface and the substantially planar lower surface may be vertically spaced from each other by a height defined in the z direction.
  • the aerosol-generating substrate may have one, or both, of the length (x dimension) and the width (y dimension) having a magnitude equal to or greater than 2 times the magnitude of the height (z dimension), for example 3 times, or 4 times, or 5 times the height, optionally equal to or greater than 6 times the height, for example 10 times the height, or 15 times the height, or 20 times the height.
  • the rod of aerosol-generating substrate may comprise a first planar layer, and a corrugated layer arranged on a surface of the first planar layer, at least one of the first planar layer and the corrugated layer comprising or consisting of aerosol-generating material.
  • the planar rod of aerosol-generating substrate may comprise a first planar layer, a second planar layer, and a corrugated layer arranged between the first planar layer and the second planar layer, at least one of the first planar layer, the second planar layer and the corrugated layer comprising or consisting of an aerosol-generating material.
  • a ratio of the weight of the rod of aerosol-generating substrate to the overall weight of the aerosol-generating article may be at least about 0.75, at least about 0.8, at least about 0.85, or at least about 0.9.
  • Increasing the ratio of the weight of the rod of aerosol-generating substrate to the overall weight of the aerosol-generating article may increase the available weight of the aerosol-generating article that is able to generate aerosol. This may increase the efficiency of the article and may reduce any encumbrances relating to storage and transport of the aerosolgenerating article.
  • the rod of aerosol-generating substrate may have a weight of at least about 90 milligrams, at least about 100 milligrams, at least about 120 milligrams, or at least about 150 milligrams.
  • the rod of aerosol-generating substrate may have a weight of less than or equal to 320 milligrams, less than or equal to about 280 milligrams, less than or equal to about 240 milligrams, or less than or equal to about 200 milligrams.
  • the rod of aerosol-generating substrate may have a weight of between about 90 milligrams and about 320 milligrams, between about 90 milligrams and about 280 milligrams, between about 90 milligrams and about 240 milligrams, or between about 90 milligrams and about 200 milligrams.
  • the rod of aerosol-generating substrate may have a weight of between about 100 milligrams and about 320 milligrams, between about 100 milligrams and about 280 milligrams, between about 100 milligrams and about 240 milligrams, or between about 100 milligrams and about 200 milligrams.
  • the rod of aerosol-generating substrate may have a weight of between about 120 milligrams and about 320 milligrams, between about 120 milligrams and about 280 milligrams, between about 120 milligrams and about 240 milligrams, or between about 120 milligrams and about 200 milligrams.
  • the rod of aerosol-generating substrate may have a weight of between about 150 milligrams and about 320 milligrams, between about 150 milligrams and about 280 milligrams, between about 150 milligrams and about 240 milligrams, or between about 150 milligrams and about 200 milligrams.
  • the rod of aerosol-generating substrate may have a density of at least about 150 milligrams per cubic centimetre, at least about 175 milligrams per cubic centimetre, at least about 200 milligrams per cubic centimetre, or at least about 250 milligrams per cubic centimetre.
  • Increasing the density of the rod of aerosol-generating substrate may increase the weight of the rod of aerosol-generating substrate.
  • Increasing the weight of the rod of aerosol-generating substrate may increase a ratio of the weight of the rod of aerosol-generating substrate to the overall weight of the aerosol-generating article.
  • the rod of aerosol-generating substrate may have a density of less than or equal to about 500 milligrams per cubic centimetre, less than or equal to about 450 milligrams per cubic centimetre, less than or equal to about 400 milligrams per cubic centimetre, or less than or equal to about 350 milligrams per cubic centimetre.
  • the density of the rod of aerosol-generating substrate may be selected such that the rod of aerosol-generating substrate remains within the conforms of a wrapper circumscribing the rod of aerosol-generating substrate when the aerosol-generating article is inserted into and removed from an aerosol-generating device.
  • the rod of aerosol-generating substrate may have a density of between about 150 milligrams per cubic centimetre and about 500 milligrams per cubic centimetre, between about 150 milligrams per cubic centimetre and about 450 milligrams per cubic centimetre, between about 150 milligrams per cubic centimetre and about 400 milligrams per cubic centimetre, or between about 150 milligrams per cubic centimetre and about 350 milligrams per cubic centimetre.
  • the rod of aerosol-generating substrate may have a density of between about 175 milligrams per cubic centimetre and about 500 milligrams per cubic centimetre, between about 175 milligrams per cubic centimetre and about 450 milligrams per cubic centimetre, between about 175 milligrams per cubic centimetre and about 400 milligrams per cubic centimetre, or between about 175 milligrams per cubic centimetre and about 350 milligrams per cubic centimetre.
  • the rod of aerosol-generating substrate may have a density of between about 200 milligrams per cubic centimetre and about 500 milligrams per cubic centimetre, between about 200 milligrams per cubic centimetre and about 450 milligrams per cubic centimetre, between about 200 milligrams per cubic centimetre and about 400 milligrams per cubic centimetre, or between about 200 milligrams per cubic centimetre and about 350 milligrams per cubic centimetre.
  • the rod of aerosol-generating substrate may have a density of between about 250 milligrams per cubic centimetre and about 500 milligrams per cubic centimetre, between about 250 milligrams per cubic centimetre and about 450 milligrams per cubic centimetre, between about 250 milligrams per cubic centimetre and about 400 milligrams per cubic centimetre, or between about 250 milligrams per cubic centimetre and about 350 milligrams per cubic centimetre.
  • the rod of aerosol-generating substrate may have a density of about 300 milligrams per cubic centimetre.
  • the term “density” as used herein in relation to the rod of aerosol-generating substrate refers to the bulk density of the rod of aerosol-generating substrate.
  • the bulk density of the rod of aerosol-generating substrate can be calculated by measuring the total weight of the rod of aerosol-generating substrate and dividing this by the volume of the rod of aerosol-generating substrate (excluding any wrapper). For example, a rod of aerosol-generating substrate having a total weight of about 150 milligrams, a substantially circular cross-section, a length of about 12 millimetres, and a diameter of about 7.1 millimetres has a density of about 315 milligrams per cubic centimetre.
  • the bulk density of a segment of aerosol-generating substrate can be calculated by measuring the total weight of the segment of aerosol-generating substrate and dividing this by the volume of the segment of aerosol-generating substrate (excluding any wrapper).
  • the RTD of the rod of aerosol-generating substrate per unit length may be at least about 0.3 millimetres H2O per millimetre, at least about 0.4 millimetres H2O per millimetre, or at least about 0.5 millimetres H2O per millimetre.
  • the RTD of the rod of aerosol-generating substrate per unit length may be less than or equal to about 1 millimetre H2O per millimetre, less than or equal to about 0.8 millimetres H2O per millimetre, or less than or equal to about 0.6 millimetres H2O per millimetre.
  • the RTD of the rod of aerosol-generating substrate per unit length may be between about 0.3 millimetres H2O per millimetre and about 1 millimetre H2O per millimetre, between about 0.3 millimetres H2O per millimetre and about 0.8 millimetres H2O per millimetre, or 0.3 millimetres H2O per millimetre and about 0.6 millimetres H2O per millimetre.
  • the RTD of the rod of aerosol-generating substrate per unit length may be between about 0.4 millimetres H2O per millimetre and about 1 millimetre H2O per millimetre, between about 0.4 millimetres H2O per millimetre and about 0.8 millimetres H2O per millimetre, or 0.4 millimetres H2O per millimetre and about 0.6 millimetres H2O per millimetre.
  • the RTD of the rod of aerosol-generating substrate per unit length may be between about 0.5 millimetres H2O per millimetre and about 1 millimetre H2O per millimetre, between about 0.5 millimetres H2O per millimetre and about 0.8 millimetres H2O per millimetre, or 0.5 millimetres H2O per millimetre and about 0.6 millimetres H2O per millimetre.
  • the RTD of the rod of aerosol-generating substrate may be at least about 4 millimetres H2O, at least about 5 millimetres H2O, or at least about 6 millimetres H2O.
  • the RTD of the rod of aerosol-generating substrate may be less than or equal to about 10 millimetres H2O, less than or equal to about 9 millimetres H2O, or less than or equal to about 8 millimetres H2O.
  • the RTD of the rod of aerosol-generating substrate may be between about 4 millimetres H2O and about 10 millimetres H2O, between about 4 millimetres H2O and about 9 millimetres H2O, or between about 4 millimetres H2O and about 8 millimetres H2O.
  • the RTD of the rod of aerosol-generating substrate may be between about 5 millimetres H2O and about 10 millimetres H2O, between about 5 millimetres H2O and about 9 millimetres H2O, or between about 5 millimetres H2O and about 8 millimetres H2O.
  • the RTD of the rod of aerosol-generating substrate may be between about 6 millimetres H2O and about 10 millimetres H2O, between about 6 millimetres H2O and about 9 millimetres H2O, or between about 6 millimetres H2O and about 8 millimetres H2O.
  • the term “rod of aerosol-generating substrate” is used to describe the rod of aerosol-generating substrate of any of: the aerosol-generating article according to the first aspect of the invention, the aerosolgenerating article of the aerosol-generating system according to the second aspect of the invention, and the aerosol-generating articles of the container according to the third aspect of the invention.
  • the rod of aerosol-generating substrate may comprise a solid aerosol-generating substrate.
  • the rod of aerosol-generating substrate is a rod of solid aerosol-generating substrate.
  • the rod of aerosol-generating substrate comprises an aerosol former.
  • the aerosol former may be any suitable known compound or mixture of compounds that, in use, facilitates formation of a dense and stable aerosol.
  • the aerosol former may be substantially resistant to thermal degradation at temperatures typically applied during use of the aerosol-generating article.
  • 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.
  • 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 tetradecanedio
  • the aerosol former comprises one or both of glycerine and propylene glycol. More preferably, the aerosol former comprises glycerine.
  • the aerosol former may consist of glycerine or propylene glycol or of a combination of glycerine and propylene glycol.
  • the rod of aerosol-generating substrate has a total aerosol former content of at least about 10 percent by weight on a dry weight basis of the rod of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may have a total aerosol former content of at least about 12 percent by weight, or at least about 15 percent by weight, on a dry weight basis of the rod of aerosolgenerating substrate.
  • the rod of aerosol-generating substrate may have a total aerosol former content of less than or equal to about 30 percent by weight, less than or equal to about 25 percent by weight, or less than or equal to about 20 percent by weight, on a dry weight basis of the rod of aerosolgenerating substrate.
  • the rod of aerosol-generating substrate may have a total aerosol former content of between about 10 percent by weight and about 30 percent by weight, between about 10 percent by weight and about 25 percent by weight, or between about 10 percent by weight and about 20 percent by weight, on a dry weight basis of the aerosol-generating substrate.
  • the rod of aerosol-generating substrate may have a total aerosol former content of between about 12 percent by weight and about 30 percent by weight, between about 12 percent by weight and about 25 percent by weight, or between about 12 percent by weight and about 20 percent by weight, on a dry weight basis of the rod of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may have a total aerosol former content of between about 15 percent by weight and about 30 percent by weight, between about 15 percent by weight and about 25 percent by weight, or between about 15 percent by weight and about 20 percent by weight, on a dry weight basis of the rod of aerosol-generating substrate.
  • the total aerosol former content of the rod of aerosol-generating substrate discussed above may also apply to each segment of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may have a glycerine content of at least about 10 percent by weight, at least about 12 percent by weight, or at least about 15 percent by weight, on a dry weight basis of the rod of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may have a glycerine content of less than or equal to about 30 percent by weight, less than or equal to about 25 percent by weight, or less than or equal to about 20 percent by weight, on a dry weight basis of the rod of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may have a glycerine content of between about 10 percent by weight and about 30 percent by weight, between about 10 percent by weight and about 25 percent by weight, or between about 10 percent by weight and about 20 percent by weight, on a dry weight basis of the rod of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may have a glycerine content of between about 12 percent by weight and about 30 percent by weight, between about 12 percent by weight and about 25 percent by weight, or between about 12 percent by weight and about 20 percent by weight, on a dry weight basis of the rod of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may have a glycerine content of between about 15 percent by weight and about 30 percent by weight, between about 15 percent by weight and about 25 percent by weight, or between about 15 percent by weight and about 20 percent by weight, on a dry weight basis of the rod of aerosol-generating substrate.
  • the glycerine content of the rod of aerosol-generating substrate discussed above may also apply to each segment of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may comprise tobacco material, such as homogenised tobacco material.
  • tobacco material such as homogenised tobacco material.
  • homogenised tobacco material is used to describe material formed by agglomerating particulate tobacco material.
  • the rod of aerosol-generating substrate may comprise one or more segments of aerosol-generating substrate, wherein each segment comprises tobacco material.
  • the rod of aerosol-generating substrate may comprise a plurality of segments of aerosolgenerating substrate, wherein each segment of aerosol-generating substrate comprises tobacco material.
  • the rod of aerosol-generating substrate may comprise a plurality of shreds of tobacco material.
  • the aerosol-generating substrate may comprise a plurality of shreds of homogenised tobacco material.
  • shred denotes an element having a length substantially greater than a width and a thickness thereof.
  • Shreds of homogenised tobacco material may be formed from a sheet of homogenised tobacco material, for example, by cutting or shredding.
  • Shreds of homogenised tobacco material may be formed by other methods, for example, by extrusion.
  • the shreds of tobacco material may have a width of at least about 0.3 millimetres, at least about 0.5 millimetres, or at least about 0.6 millimetres.
  • the shreds of tobacco material may have a width of less than or equal to about 2 millimetres, less than or equal to about 1.2 millimetres, or less than about 0.9 millimetres.
  • the shreds of tobacco material may have a width of between about 0.3 millimetres and about 2 millimetres, between about 0.3 millimetres and about 1.2 millimetres, or between about 0.3 millimetres and about 0.9 millimetres.
  • the shreds of tobacco material may have a width of between about 0.5 millimetres and about 2 millimetres, between about 0.5 millimetres and about 1.2 millimetres, or between about 0.5 millimetres and about 0.9 millimetres.
  • the shreds of tobacco material may have a width of between about 0.6 millimetres and about 2 millimetres, between about 0.6 millimetres and about 1.2 millimetres, or between about 0.6 millimetres and about 0.9 millimetres.
  • the shreds of tobacco material may have a length of at least about 10 millimetres.
  • the shreds of tobacco material may have a length of less than or equal to about 40 millimetres.
  • the shreds of tobacco material may have a length of between about 10 millimetres and about 40 millimetres.
  • At least about 20 percent by weight of the plurality of shreds of tobacco material on a dry weight basis may extend along the entire length of the rod of aerosol-generating substrate. At least about 20 percent by weight of the plurality of shreds of tobacco material on a dry weight basis may have a length substantially the same as the length of the rod of aerosol-generating substrate.
  • Less than or equal to about 60 percent by weight of the plurality of shreds of tobacco material on a dry weight basis may extend along the entire length of the rod of aerosol-generating substrate. Less than or equal to about 60 percent by weight of the plurality of shreds of tobacco material on a dry weight basis may have a length substantially the same as the length of the rod of aerosol-generating substrate.
  • Between about 20 percent and 60 percent by weight of the plurality of shreds of tobacco material on a dry weight basis may extend along the entire length of the rod of aerosol-generating substrate. Between about 20 percent and 60 percent by weight of the plurality of shreds of tobacco material on a dry weight basis may have a length substantially the same as the length of the rod of aerosol-generating substrate.
  • the size of the aerosol-generating material of the rod of aerosol-generating substrate may play a role in the distribution of heat inside the rod of aerosol-generating substrate. Also, the size of the aerosol-generating material may play a role in the resistance to draw of the article.
  • the rod of aerosol-generating substrate may comprise a plurality of pellets or granules of tobacco material.
  • the rod of aerosol-generating substrate may comprise a plurality of pellets or granules of homogenised tobacco material.
  • At least about 60 percent by weight of the plurality of pellets or granules may have a largest dimension greater than about 1 millimetre, at least about 70 percent by weight of the plurality of pellets or granules may have a largest dimension greater than about 1 millimetre, or at least about 80 percent by weight of the plurality of pellets or granules may have a largest dimension greater than about 1 millimetre.
  • the homogenised tobacco material is in the form of a plurality of pellets or granules
  • at least about 70 percent by weight of the plurality of pellets or granules may have a largest dimension greater than about 0.5 millimetres
  • at least about 80 percent by weight of the plurality of pellets or granules may have a largest dimension greater than about 0.5 millimetres
  • at least about 90 percent by weight of the plurality of pellets or granules may have a largest dimension greater than about 0.5 millimetres.
  • At least about 80 percent by weight of the plurality of pellets or granules may have a largest dimension greater than about 1 millimetre and at least about 90% by weight of the plurality of pellets or granules may have a largest dimension greater than about 0.5 millimetres.
  • the rod of aerosol-generating substrate may comprise one or more sheets of tobacco material.
  • the rod of aerosol-generating substrate may comprise one or more sheets of homogenised tobacco material.
  • the one or sheets of tobacco material may each individually have a thickness of at least about 100 micrometres, at least about 150 micrometres, or at least about 300 micrometres.
  • individual thickness refers to the thickness of the individual sheet of tobacco material
  • combined thickness refers to the total thickness of all sheets of tobacco material that make up the rod of aerosol-generating substrate or a segment of aerosol-generating substrate.
  • the rod of aerosol-generating substrate is formed from two individual sheets of tobacco material
  • the combined thickness is the sum of the thickness of the two individual sheets of tobacco material or the measured thickness of the two sheets of tobacco material where the two sheets of tobacco material are stacked in the rod of aerosol-generating substrate.
  • the one or more sheets of tobacco material may each individually have a thickness of less than or equal to about 600 micrometres, less than or equal to about 300 micrometres, or less than or equal to about 250 micrometres.
  • the one or more sheets of tobacco material may each individually have a thickness of between about 100 micrometres and about 600 micrometres, between about 100 micrometres and about 300 micrometres, or between about 100 micrometres and about 250 micrometres.
  • the one or more sheets of tobacco material may each individually have a thickness of between about 150 micrometres and about 600 micrometres, between about 150 micrometres and about 300 micrometres, or between about 150 micrometres and about 250 micrometres.
  • the one or more sheets of tobacco material may each individually have a thickness of between about 250 micrometres and about 600 micrometres, between about 250 micrometres and about 300 micrometres, or between about 250 micrometres and about 250 micrometres.
  • the one or more sheets of tobacco material may each individually have a length substantially the same as the length of the aerosol-generating substrate.
  • the one or more sheets of tobacco material may have been one or more of crimped, folded, gathered, and pleated.
  • Crimping, folding, gathering, or pleating of the one or more sheets of tobacco material may cause splitting of the one or more sheets of tobacco material to form shreds of tobacco material.
  • the one or more sheets of tobacco material may be crimped to such an extent that the integrity of the one or more sheets of tobacco material becomes disrupted at the plurality of parallel ridges or corrugations causing separation of the material, and results in the formation of shreds of tobacco material.
  • the rod of aerosol-generating substrate comprises nicotine.
  • nicotine is used to describe nicotine, a nicotine base or a nicotine salt.
  • the rod of aerosol-generating substrate may comprise non-tobacco plant material, such as homogenised non-tobacco plant material.
  • the non-tobacco plant material may comprise particles selected from rosemary particles, star anise particles, ginger particles, clove particles, eucalyptus particles, or combinations thereof.
  • homogenised plant material encompasses any plant material formed by the agglomeration of particles of plant.
  • sheets or webs of homogenised plant material may be formed by agglomerating particles of plant material obtained by pulverising, grinding or comminuting non-tobacco 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.
  • plant particles encompasses particles derived from any suitable plant material and which are capable of generating one or more volatile flavour compounds upon heating. This term should be considered to exclude particles of inert plant material such as cellulose, that do not contribute to the sensory output of the aerosol-generating substrate.
  • the plant particles may be produced from ground or powdered leaf lamina, fruits, stalks, stems, roots, seeds, buds or bark or any other suitable portion of the plant.
  • the rod of aerosol-generating substrate may be formed of a homogenised plant material.
  • the homogenised plant material may comprise one or both of tobacco plant particles and nontobacco plant particles.
  • the homogenised plant material may comprise between about 1 percent by weight and about 65 percent by weight of non-tobacco plant particles or between about 1 percent by weight and about 65 percent by weight of tobacco particles, on a dry weight basis.
  • the homogenised plant material may comprise between 15 percent by weight and 55 percent by weight of aerosol former, on a dry weight basis.
  • the homogenised plant material may comprise between 2 percent by weight and 10 percent by weight of cellulose ether, on a dry weight basis.
  • the homogenised plant material may comprise between 5 percent by weight and 50 percent by weight of additional cellulose, on a dry weight basis.
  • the additional cellulose may not be derived from the non-tobacco plant particles.
  • the ratio of additional cellulose to cellulose ether may be at least 2.
  • the homogenised plant material By using a combination of cellulose ether and additional cellulose in the homogenised plant material, a more effective binding of the plant particles may be achieved and the resulting homogenised plant material may have a significantly higher tensile strength.
  • the resultant homogenised plant material can therefore be readily processed to form an aerosol-generating substrate, using existing high speed apparatus and techniques. For certain non-tobacco plant materials, it is therefore possible to produce acceptable homogenised plant materials having a higher level of the non-tobacco plant particles than has been previously possible.
  • the rod of aerosol-generating substrate may comprise a solid aerosol-generating substrate.
  • the rod of aerosol-generating substrate may be a rod of solid aerosol-generating substrate.
  • solid is used to describe an aerosol-generating substrate that has a stable size and shape and does not flow at 23°C.
  • the solid aerosol-generating substrate may comprise one or more cellulose based agents.
  • the solid aerosol-generating substrate may have a total cellulose based agent content of greater than or equal to about 35 percent by weight, on a dry weight basis of the solid aerosol-generating substrate.
  • the solid aerosol-generating substrate may comprise one or more cellulose based filmforming agents.
  • 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 may be selected from carboxymethyl cellulose (CMC), ethylcellulose (EC), hydroxyethyl cellulose (HEC), hydroxyethyl methylcellulose (HEMC), hydroxypropyl cellulose (HPC), hydroxypropyl methylcellulose (HPMC), and methylcellulose (MC).
  • CMC carboxymethyl cellulose
  • EC ethylcellulose
  • HEC hydroxyethyl cellulose
  • HEMC hydroxyethyl methylcellulose
  • HPMC hydroxypropyl methylcellulose
  • MC methylcellulose
  • the solid aerosol-generating substrate comprises one or both of carboxymethyl cellulose (CMC) and hydroxypropyl methylcellulose (HPMC).
  • the solid aerosol-generating substrate may comprise one or more carboxylic acids.
  • the one or more carboxylic acids may not contain any non-carboxyl alkyl hydroxyl groups.
  • the one or more carboxylic acids may not contain any ketone groups.
  • Inclusion of one or more carboxylic acids that do not contain any non-carboxyl alkyl hydroxyl groups and do not contain any ketone groups in the solid aerosol-generating substrate may advantageously improve the stability of the solid aerosol-generating substrate any nicotine in the solid aerosol-generating substrate during storage of the aerosol-generating article.
  • inclusion of one or more carboxylic acids that do not contain any non-carboxyl alkyl hydroxyl groups and do not contain any ketone groups in the solid aerosol-generating substrate may advantageously inhibit corrosion of components, such as some metal components, of the aerosol-generating article and of an aerosol-generating system comprising the aerosol-generating article.
  • inclusion of such one or more carboxylic acids may advantageously inhibit corrosion of the susceptor.
  • the one or more carboxylic acids may have a pKa at 25°C in water of less than or equal to 3.5. Inclusion of one or more carboxylic acids having such pKa in the solid aerosol-generating substrate may advantageously improve the stability of the solid aerosol-generating substrate any nicotine in the solid aerosol-generating substrate during storage of the aerosol-generating article. Inclusion of one or more carboxylic acids having such pKa in the solid aerosol-generating substrate may advantageously inhibit corrosion of components, such as some metal components, of the aerosol-generating article and of an aerosol-generating system comprising the aerosolgenerating article.
  • the one or more carboxylic acids may be selected from: acetic acid, adipic acid, benzoic acid, citric acid, fumaric acid, maleic acid, malic acid, myristic acid, oxalic acid, salicylic acid, stearic acid, succinic acid, and undecanoic acid.
  • the one or more carboxylic acids may be selected from: acetic acid, benzoic acid, citric acid, fumaric acid, maleic acid, and malic acid.
  • the one or more carboxylic acids may be selected from: fumaric acid, maleic acid, and malic acid.
  • the solid aerosol-generating substrate comprises one or both of fumaric acid and maleic acid.
  • the solid aerosol-generating substrate may have a total carboxylic acid content of greater than or equal to 0.5 percent by weight.
  • the solid aerosol-generating substrate may remain solid when heated to a temperature of between 180 degrees Celsius and 350 degrees Celsius.
  • the solid aerosol-generating substrate may not comprise iota-carrageenan or kappa- carrageenan.
  • the solid aerosol-generating substrate may be a solid aerosol-generating film.
  • film is used to describe a solid aerosol-generating substrate having a thickness that is substantially less than the width or length thereof.
  • the term “thickness” in relation to a solid aerosol-generating film is used to describe the minimum dimension between opposite, substantially parallel surfaces of the solid aerosol-generating film.
  • the solid aerosol-generating film may have a thickness of at least about 0.05 millimetres, at least about 0.1 millimetres, at least about 0.2 millimetres, at least about 0.3 millimetres.
  • the solid aerosol-generating film may have a thickness of less than or equal to about 1.2 millimetres, less than or equal to about 1 millimetre, less than or equal to about 0.8 millimetres, less than or equal to about 0.6 millimetres, or less than or equal to about 0.4 millimetres.
  • the solid aerosol-generating film may have a basis weight of at least about 85 grams per square metre, at least about 100 grams per square metre, at least about 120 grams per square metre, or at least about 140 grams per square metre.
  • the solid aerosol-generating film may have a basis weight of less than or equal to about 300 grams per square metre, less than or equal to about 280 grams per square metre, or less than or equal to about 260 grams per square metre.
  • the solid aerosol-generating film may be formed by any suitable method.
  • the solid aerosol-generating film may be formed by batch casting, continuous casting or extrusion.
  • the solid aerosol-generating film may be self-supporting.
  • the properties of the solid aerosol-generating film may be such that, even if the solid aerosol-generating film is formed by casting a slurry onto a support surface, the solid aerosol-generating film can be separated from the support surface.
  • the solid aerosol-generating film may be disposed on a support or the solid aerosolgenerating film may be sandwiched between other materials. This may enhance the mechanical stability of the solid aerosol-generating film.
  • the solid aerosol-generating film may be disposed on a laminar support.
  • the solid aerosol-generating film may be cut or otherwise divided into a plurality of strips or shreds that may be wrapped to form a rod of aerosol-generating substrate for inclusion in the aerosol-generating article.
  • the solid aerosol-generating film may be gathered to form a rod of aerosol-generating substrate for inclusion in the aerosol-generating article.
  • the solid aerosol-generating film may have a total aerosol former content of at least about 35 percent by weight, at least about 40 percent by weight, at least about 45 percent by weight, or at least about 40 percent by weight, on a dry weight basis of the solid aerosol-generating film.
  • the solid aerosol-generating film may have a total aerosol former content of less than or equal to about 60 percent by weight, on a dry weight basis of the solid aerosol-generating film.
  • the solid aerosol-generating film may have a total aerosol former content of between about 35 percent by weight and about 60 percent by weight, between about 40 percent by weight and about 60 percent by weight, or between about 45 percent by weight and about 60 percent by weight, on a dry weight basis of the solid aerosol-generating film.
  • the solid aerosol-generating film may have a glycerine content of at least about 35 percent by weight, at least about 40 percent by weight, at least about 45 percent by weight, or at least about 40 percent by weight, on a dry weight basis of the solid aerosol-generating film.
  • the solid aerosol-generating film may have a glycerine content of less than or equal to about 60 percent by weight, on a dry weight basis of the solid aerosol-generating film.
  • the solid aerosol-generating film may have a glycerine content of between about 35 percent by weight and about 60 percent by weight, between about 40 percent by weight and about 60 percent by weight, or between about 45 percent by weight and about 60 percent by weight, on a dry weight basis of the solid aerosol-generating film.
  • the solid aerosol-generating substrate may comprise nicotine.
  • the solid aerosol-generating substrate may be a solid aerosol-generating film comprising nicotine.
  • the solid aerosol-generating substrate may have a nicotine content of at least about 0.5 percent by weight, at least about 1 percent by weight, at least about 1 .5 percent by weight, or at least about 2 percent by weight, on a dry weight basis of the solid aerosol-generating substrate.
  • the solid aerosol-generating substrate may have a nicotine content of less than or equal to 10 percent by weight, less than or equal to 8 percent by weight, less than or equal to 6 percent by weight, or less than or equal to 4 percent by weight, on a dry weight basis of the solid aerosolgenerating substrate.
  • the solid aerosol-generating substrate comprises a nicotine base or a nicotine salt
  • the amounts of nicotine recited herein are the amount of free base nicotine or amount of protonated nicotine, respectively.
  • the solid aerosol-generating substrate may have a total aerosol former content of at least about 35 percent by weight, at least about 40 percent by weight, at least about 45 percent by weight, or at least about 40 percent by weight, on a dry weight basis of the solid aerosol-generating substrate.
  • the aerosol-generating substrate comprises a solid aerosol-generating film, for example a solid aerosol-generating film comprising a cellulose based agent.
  • the solid aerosol-generating substrate may have a total aerosol former content of less than or equal to about 60 percent by weight, on a dry weight basis of the solid aerosol-generating substrate. This may particularly be the case where the aerosol-generating substrate comprises a solid aerosol-generating film, for example a solid aerosol-generating film comprising a cellulose based agent.
  • the solid aerosol-generating substrate may have a total aerosol former content of between about 35 percent by weight and about 60 percent by weight, between about 40 percent by weight and about 60 percent by weight, or between about 45 percent by weight and about 60 percent by weight, on a dry weight basis of the solid aerosol-generating substrate.
  • the aerosol-generating substrate comprises a solid aerosol-generating film, for example a solid aerosol-generating film comprising a cellulose based agent.
  • the solid aerosol-generating substrate may have a glycerine content of at least about 35 percent by weight, at least about 40 percent by weight, at least about 45 percent by weight, or at least about 40 percent by weight, on a dry weight basis of the solid aerosol-generating substrate. This may particularly be the case where the aerosol-generating substrate comprises a solid aerosol-generating film, for example a solid aerosol-generating film comprising a cellulose based agent.
  • the solid aerosol-generating substrate may have a glycerine content of less than or equal to about 60 percent by weight, on a dry weight basis of the solid aerosolgenerating substrate. This may particularly be the case where the aerosol-generating substrate comprises a solid aerosol-generating film, for example a solid aerosol-generating film comprising a cellulose based agent.
  • the solid aerosol-generating substrate may have a glycerine content of between about 35 percent by weight and about 60 percent by weight, between about 40 percent by weight and about 60 percent by weight, or between about 45 percent by weight and about 60 percent by weight, on a dry weight basis of the solid aerosol-generating substrate.
  • the aerosol-generating substrate comprises a solid aerosolgenerating film, for example a solid aerosol-generating film comprising a cellulose based agent.
  • the rod of aerosol-generating substrate may comprise graphite.
  • the rod of aerosol-generating substrate may comprise thermally conductive particles.
  • the thermally conductive particles may increase the thermal conductivity of the rod of aerosol-generating substrate.
  • the increased thermal conductivity of the aerosol-generating substrate may provide a more even temperature distribution through the aerosol-generating substrate during use. This may result in a greater proportion of the aerosol-generating substrate reaching a sufficiently high temperature to release volatile compounds, and thus a higher usage efficiency of the aerosol-generating substrate.
  • the increased thermal conductivity of the aerosol-generating substrate may allow a heater, for example a heater of an aerosol-generating device configured to heat the aerosol-generating substrate, to operate at a lower temperature and thus require less power.
  • the increased thermal conductivity of the aerosol-generating substrate may allow a heater to heat the substrate to a temperature in which volatile compounds are released in less time.
  • the increased thermal conductivity may reduce the time required to form an inhalable aerosol for a user.
  • Each thermally conductive particle of the thermally conductive particles may have a thermal conductivity of at least 1 Watt per metre Kelvin [W/(m/K)] in at least one direction at 25 degrees Celsius.
  • This thermal conductivity may be measured when a moisture content of the aerosol-generating substrate is between 0 and 20, or 5 and 15, for example around 10%.
  • This thermal conductivity may be measured when the substrate comprises between 0 and 20, or 5 and 15, for example around 10 wt % water.
  • the moisture or water content of the substrate may be measured using a titration method.
  • the moisture or water content of the substrate may be measured using the Karl Fisher method.
  • thermally conductive particles may comprise one or more of graphite, expanded graphite, graphene, carbon nanotubes, charcoal, and diamond such as artificial diamond. Some or all of the thermally conductive particles may be graphite particles.
  • the rod of aerosol-generating substrate may comprise, on a dry weight basis, between about 10 and about 90 weight percent thermally conductive particles.
  • the rod of aerosol-generating substrate comprises aerosol-generating material along substantially the entire length of the rod of aerosol-generating substrate.
  • the aerosol generating material is capable of releasing upon heating volatile compounds that can generate an aerosol.
  • the rod of aerosol-generating substrate may comprise nicotine along substantially the entire length of the rod of aerosol-generating substrate.
  • nicotine may be distributed along substantially the entire length of the rod of aerosol-generating substrate.
  • Nicotine may be substantially uniformly distributed along the entire length of the rod of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may comprise aerosol former along substantially the entire length of the rod of aerosol-generating substrate. Aerosol former may be substantially uniformly distributed along the entire length of the rod of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may comprise one or more segments of aerosolgenerating substrate. Where the rod of aerosol-generating substrate comprises a plurality of segments of aerosol-generating substrate, each segment of the plurality of segments of aerosolgenerating substrate is in direct contact with at least one other segment of the plurality of segments of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may comprise one or more segments of aerosolgenerating substrate, wherein each segment of aerosol-generating substrate comprises nicotine. Where this is the case and the aerosol-generating article comprises an additional segment comprising plant material but no nicotine, this additional segment is not considered to be a part of the rod of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may comprise one or more segments of aerosolgenerating substrate, wherein each segment of aerosol-generating substrate has a total aerosol former content of at least about 10 percent by weight, on a dry weight basis.
  • each segment of aerosol-generating substrate has a total aerosol former content of at least about 10 percent by weight, on a dry weight basis.
  • the aerosol-generating article comprises an additional segment comprising plant material and the additional segment does not have a total aerosol former content of at least about 10 percent by weight, on a dry weight basis, this additional segment is not considered to be a part of the rod of aerosol-generating substrate.
  • Each segment of aerosol-generating substrate may have a glycerine content of at least about 10 percent by weight, on a dry weight basis.
  • the rod of aerosol-generating substrate may comprise one or more segments of aerosolgenerating substrate, wherein each segment of aerosol-generating substrate comprises nicotine, and wherein each segment of aerosol-generating substrate has a total aerosol former content of at least about 10 percent by weight, on a dry weight basis.
  • the rod of aerosol-generating substrate may comprise a single segment of aerosolgenerating substrate. Where the rod of aerosol-generating substrate comprises a single segment of aerosol-generating substrate, the single segment of aerosol-generating substrate extends the entire length of the rod of aerosol-generating substrate. Where the rod of aerosol-generating substrate comprises a single segment of aerosol-generating substrate, the properties of the rod of aerosol-generating substrate discussed herein may equally applied to the single segment of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may consist of the single segment of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may comprise a plurality of segments of aerosolgenerating substrate, wherein each segment of the plurality of segments of aerosol-generating substrate is in direct contact with at least one other segment of the plurality of segments of aerosol-generating substrate.
  • the rod of aerosol-generating substrate may comprise two segments of aerosol-generating substrate: a first segment of aerosol-generating substrate and a second segment of aerosol-generating substrate in direct contact with the first segment of aerosol-generating substrate.
  • Each segment of the plurality of segments of aerosol-generating substrate may comprise nicotine.
  • Each segment of the plurality of segments of aerosol-generating substrate may have a total aerosol former content of at least about 10 percent by weight on a dry weight basis.
  • Each segment of the plurality of segments of aerosol-generating substrate may have a glycerine content of at least about 10 percent by weight, on a dry weight basis.
  • the rod of aerosol-generating substrate may comprise a plurality of segments of aerosol-generating substrate, wherein each segment of the plurality of segments of aerosol-generating substrate is in direct contact with at least one other segment of the plurality of segments of aerosol-generating substrate, wherein each segment of the plurality of segments of aerosol-generating substrate comprises nicotine, and wherein each segment of the plurality of segments of aerosol-generating substrate has a total aerosol former content of at least about 10 percent by weight on a dry weight basis.
  • One segment of the plurality of segments of aerosol-generating substrate may not be separated from another segment of the plurality of segments of aerosol-generating substrate by a non-aerosol-generating element.
  • the plurality of segments of aerosol-generating substrate may be in an end-to-end abutting relationship.
  • the rod of aerosol-generating substrate may comprise a first segment of aerosol-generating substrate and a second segment of aerosol-generating substrate, wherein the upstream end of the second segment of aerosol-generating substrate abuts the downstream end of the first segment of aerosol-generating substrate.
  • the length of the rod of aerosol-generating substrate may be equal to the sum of the length of each of the plurality of segments of aerosol-generating substate.
  • the rod of aerosol-generating substrate may comprise a first segment of aerosol-generating substrate and a second segment of aerosol-generating substrate, wherein the length of the rod of aerosolgenerating substrate is equal to the sum of the length of the first segment of aerosol-generating substrate and the length of the second segment of aerosol-generating substrate.
  • the sum of the length of the first segment of aerosol-generating substrate and the length of the second segment of aerosol-generating substrate may at least about 75% of the length of the aerosol-generating article.
  • Each of the plurality of segments of aerosol-generating substrate may be substantially identical to one another.
  • Each of the plurality of segments of aerosol-generating substrate may have substantially the same length.
  • Each of the plurality of segments of aerosol-generating substrate may have substantially the same shape.
  • Each of the plurality of segments of aerosol-generating substrate may have substantially the same dimensions.
  • Each of the plurality of segments of aerosol-generating substrate may have substantially the same composition.
  • the plurality of segments of aerosol-generating substrate may comprise at least two segments of aerosol-generating substrate having a different composition from one another. Each of the plurality of segments of aerosol-generating substrate may have a different composition.
  • the rod of aerosol-generating substrate may be located at the downstream end of the aerosol-generating article.
  • the rod of aerosol-generating substrate may extend from the downstream end of the aerosol-generating article towards the upstream end of the aerosolgenerating article.
  • the rod of aerosol-generating substrate may be located at the upstream end of the aerosol-generating article.
  • the rod of aerosolgenerating substrate may extend from the upstream end of the aerosol-generating article towards the downstream end of the aerosol-generating article.
  • the rod of aerosol-generating article may extend from the upstream end of the aerosol-generating article to the downstream end of the aerosol-generating article.
  • the rod of aerosol-generating substrate may extend substantially the entire length of the aerosol-generating article.
  • the rod of aerosol-generating substrate may have a length substantially the same as a length of the aerosol-generating article.
  • the aerosol-generating article may comprise a susceptor.
  • 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.
  • the susceptor may be arranged in thermal contact with the rod of aerosol-generating substrate.
  • the susceptor may be in direct contact with the rod of aerosol-generating substrate.
  • the susceptor may be located within the rod of 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.
  • the 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.
  • the aerosol-generating article of the first, second and third aspects of the invention has a length of less than or equal to about 40 millimetres, and a rod of aerosol-generating substrate having a length of at least about 75 percent of the length of the aerosol-generating article.
  • the aerosol-generating article comprises one or more elements in addition to the rod of aerosolgenerating substrate, the combined length of the one or more elements is relatively short.
  • the aerosol-generating article may comprise a downstream section located downstream of the rod of aerosol-generating substrate
  • the downstream section may help to prevent direct contact between the aerosolgenerating material of the rod of aerosol-generating substrate with some components of an aerosol-generating device when the aerosol-generating article is inserted into and located within the aerosol-generating device during use of the aerosol-generating article. This may help to prevent contamination of the aerosol-generating material, which may adversely affect the quality and consistency of aerosol delivered to a user.
  • the downstream section may help to avoid aerosol-generating material from being dislodged from the rod of aerosol-generating substrate and any dislodged aerosol-generating material from travelling through the downstream section and exiting the aerosol-generating article through the downstream end of the aerosol-generating article. This may help to avoid aerosolgenerating material remaining in the aerosol-generating device following removal of the aerosolgenerating article from the aerosol-generating device. Aerosol-generating material remaining in the aerosol-generating device following removal of the aerosol-generating article may prevent or inhibit optimal functioning of the aerosol-generating device, which may adversely affect the quality and consistency of aerosol delivered to a user.
  • the rod of aerosol-generating rod may be hot.
  • Providing the aerosol-generating article with a downstream section may avoid a user contacting the rod of aerosol-generating substrate to remove the aerosol-generating article from an aerosol-generating device.
  • a user may grip the downstream section to facilitate removal of the aerosol-generating article from the aerosolgenerating device.
  • the downstream section extends from the downstream end of the rod of aerosolgenerating substrate to the downstream end of the aerosol-generating article.
  • the downstream section may have a length of less than or equal to about 8 millimetres, or less than or equal to about 5 millimetres.
  • the downstream section may have a length of at least about 1 millimetre, or at least about 3 millimetres.
  • the downstream section may have a length of between about 3 millimetres and about 5 millimetres.
  • the downstream section may have a length of less than or equal to about 1 millimetre, or less than or equal to about 0.5 millimetres. This may particularly be the case where the downstream section comprises a film, as discussed further below.
  • a ratio of the length of the downstream section to the length of the aerosol-generating article may be less than or equal to about 0.3, less than or equal to about 0.2, less than or equal to about 0.15, or less than or equal to about 0.1.
  • the downstream section may have a substantially circular cross-section.
  • the downstream section may have a diameter substantially the same as a diameter of the rod of aerosol-generating substrate.
  • the downstream section has a substantially constant diameter along its entire length.
  • the downstream section may comprise a plug element.
  • the plug element may be a porous plug element.
  • the plug element may be formed of a solid cylindrical plug element having a filled cross-section. Such a plug element may be referred to as a ‘plain’ element.
  • the plug element may be porous, as described above, but does not have a tubular form and therefore does not provide a longitudinal flow channel.
  • the plug element may have a substantially uniform crosssection.
  • the plug element may help to reduce or prevent dislodgement of aerosol-generating material from the rod of aerosol-generating substrate.
  • the plug element may help to reduce or prevent any dislodged aerosol-generating material from falling out of the downstream end of the aerosol-generating article.
  • the plug element of the downstream section may abut the rod of aerosol-generating substrate.
  • the plug element may extend the entire length of the downstream section.
  • the aerosolgenerating article may comprise a plug element extending from the downstream end of the rod of aerosol-generating substrate to the downstream end of the aerosol-generating article.
  • the plug element may have a diameter substantially the same as a diameter of the rod of aerosol-generating substrate.
  • the plug element may be a cellulose acetate plug.
  • the downstream section may comprise a cellulose acetate plug.
  • the downstream section may comprise a hollow tubular element.
  • the hollow tubular element may help to cool aerosol generated by the rod of aerosol-generating substrate.
  • the hollow tubular element may help to reduce or prevent dislodgement of aerosol-generating material from the rod of aerosol-generating substrate.
  • the term “hollow tubular element” is used to denote a generally cylindrical element having a lumen along a longitudinal axis thereof.
  • the hollow tubular element may have a substantially circular, oval or elliptical cross-section.
  • the lumen may have a substantially circular, oval or elliptical cross-section.
  • the term “hollow tubular element” is used to denote an element defining at least one airflow conduit establishing an uninterrupted fluid communication between an upstream end of the hollow tubular element and a downstream end of the hollow tubular element.
  • a hollow tubular element provides an unrestricted flow channel.
  • the hollow tubular element provides a negligible level of resistance to draw (RTD).
  • RTD resistance to draw
  • the term “negligible level of RTD” is used to describe an RTD of less than 1 mm H2O per 10 millimetres of length of the hollow tubular element, less than 0.4 mm H2O per 10 millimetres of length of the hollow tubular element, or less than 0.1 mm H2O per 10 millimetres of length of the hollow tubular element.
  • the flow channel should therefore be free from any components that would obstruct the flow of air in a longitudinal direction.
  • the flow channel is substantially empty.
  • the hollow tubular element of the downstream section may abut the rod of aerosolgenerating substrate.
  • the hollow tubular element of the downstream section may extend the entire length of the downstream section.
  • the aerosol-generating article may comprise a hollow tubular element extending from the downstream end of the rod of aerosol-generating substrate to the downstream end of the aerosol-generating article.
  • the hollow tubular element of the downstream section may have a diameter substantially the same as a diameter of the rod of aerosol-generating substrate.
  • the hollow tubular element of the downstream section may be formed from any suitable material or combination of materials.
  • the hollow tubular element of the downstream section may be formed from one or more materials selected from the group consisting of: cellulose acetate; a paper based material such as paper or cardboard; and polymeric materials, such as low density polyethylene (LDPE).
  • LDPE low density polyethylene
  • Other suitable materials include polyhydroxyalkanoate (PHA) fibres.
  • the downstream section may comprise non-tobacco plant particles.
  • the downstream section may comprise particles selected from rosemary particles, star anise particles, ginger particles, clove particles, eucalyptus particles, or combinations thereof.
  • the downstream section may be heated indirectly.
  • the non-tobacco plant particles may generate one or more volatile flavour compounds that contribute to the sensory output of the aerosol-generating article.
  • the plug element may comprise non-tobacco plant particles.
  • the hollow tubular element may comprise non-tobacco plant particles.
  • the downstream section may comprise a flavourant.
  • suitable flavourants include, but are not limited to: menthol; mint, such as peppermint and spearmint; chocolate; liquorice; citrus and other fruit flavours; gamma octalactone; vanillin; ethyl vanillin; breath freshener flavours; spice flavours such as cinnamon; methyl salicylate; linalool; bergamot oil; geranium oil; lemon oil; ginger oil; and tobacco flavour.
  • the downstream section comprises a plug element
  • the plug element may comprise a flavourant.
  • the downstream section comprises a hollow tubular element
  • the hollow tubular element may comprise a flavourant.
  • the downstream section may have a total aerosol former content of less than or equal to about 1 percent by, on a dry weight basis.
  • the downstream section may be substantially free of aerosol former. In other words, the downstream section may comprise about 0 percent by weight of aerosol former, on a dry weight basis.
  • the plug element may have a total aerosol former content of less than or equal to about 1 percent by weight, on a dry weight basis.
  • the plug element may be substantially free of aerosol former.
  • the hollow tubular element may have a total aerosol former content of less than or equal to about 1 percent by weight, on a dry weight basis.
  • the hollow tubular element may be substantially free of aerosol former.
  • the downstream section may have a nicotine content of less than or equal to about 0.1 percent by weight, on a dry weight basis.
  • the downstream section may be substantially free of nicotine. In other words, the downstream section may comprise about 0 percent by weight of nicotine, on a dry weight basis.
  • the plug element may have a nicotine content of less than or equal to about 0.1 percent by weight, on a dry weight basis.
  • the plug element may be substantially free of nicotine.
  • the hollow tubular element may have a nicotine content of less than or equal to about 0.1 percent by weight, on a dry weight basis.
  • the hollow tubular element may be substantially free of nicotine.
  • the downstream section may comprise a film.
  • the film of the downstream section may be for sealing the downstream end of the rod of aerosol-generating substrate.
  • the film of the downstream section may substantially prevent aerosol-generating material of the rod of aerosolgenerating substrate from exiting the aerosol-generating article through the downstream end of the aerosol-generating article.
  • the film of the downstream section may substantially prevent air from flowing through the downstream end of the rod of aerosol-generating substrate. This may help to improve the shelf life of the aerosol-generating article, and the quality and consistency of aerosol delivered to a user.
  • the film of the downstream section may abut the downstream end face of the rod of aerosol-generating substrate.
  • the film of the downstream section may cover substantially the entire downstream end face of the rod of aerosol-generating substrate.
  • the film of the downstream section may be substantially air-impermeable.
  • the film of the downstream section may be configured to be removable from the aerosolgenerating article.
  • the film of the downstream section may be removed from the aerosolgenerating article prior to use of the aerosol-generating article.
  • the film of the downstream section may have a length of less than or equal to about 1 millimetre, or less than or equal to about 0.5 millimetres.
  • the film of the downstream section may extend the entire length of the downstream section.
  • the downstream section may be circumscribed by a wrapper, such as a plug wrap.
  • the downstream section may be connected to the rod of aerosol-generating substrate by means of an outer wrapper.
  • the aerosol-generating article may not comprise a downstream section.
  • the aerosol-generating article of the first aspect of the invention comprises an upstream section located upstream of the rod of aerosol-generating substrate.
  • the aerosol-generating article of the aerosol-generating system of the second aspect of the invention may comprise an upstream section located upstream of the rod of aerosol-generating substrate.
  • Each of the plurality of aerosol-generating articles of the container of the third aspect of the invention may comprise an upstream section located upstream of the rod of aerosol-generating substrate.
  • the upstream section may help to prevent direct contact between the aerosol-generating material of the rod of aerosol-generating substrate with some components of an aerosolgenerating device when the aerosol-generating article is inserted into and located within the aerosol-generating device during use of the aerosol-generating article. This may help to prevent contamination of the aerosol-generating material, which may adversely affect the quality and consistency of aerosol delivered to a user.
  • the upstream section may help to avoid aerosol-generating material from being dislodged from the rod of aerosol-generating substrate and any dislodged aerosol-generating material from travelling through the upstream section and exiting the aerosol-generating article through the upstream end of the aerosol-generating article. This may help to avoid aerosol-generating material remaining in the aerosol-generating device following removal of the aerosol-generating article from the aerosol-generating device. Aerosol-generating material remaining in the aerosolgenerating device following removal of the aerosol-generating article may prevent or inhibit optimal functioning of the aerosol-generating device, which may adversely affect the quality and consistency of aerosol delivered to a user.
  • the rod of aerosol-generating rod may be hot.
  • Providing the aerosol-generating article with an upstream section may avoid a user contacting the rod of aerosol-generating substrate to remove the aerosol-generating article from an aerosolgenerating device.
  • a user may grip the upstream section to facilitate removal of the aerosol-generating article from the aerosol-generating device.
  • the upstream section extends from the upstream end of the aerosol-generating article to the upstream end of the rod of aerosol-generating substrate.
  • the aerosol-generating article may comprise both an upstream section and a downstream section.
  • the upstream section may have a length of less than or equal to about 8 millimetres, or less than or equal to about 5 millimetres.
  • the upstream section may have a length of at least about 1 millimetre, or at least about 3 millimetres.
  • the upstream section may have a length of between about 3 millimetres and about 5 millimetres.
  • the upstream section may have a length of less than or equal to about 1 millimetre, or less than or equal to about 0.5 millimetres. This may particularly be the case where the upstream section comprises a film, as discussed further below.
  • a ratio of the length of the upstream section to the length of the aerosol-generating article may be less than or equal to 0.3, less than or equal to about 0.2, less than or equal to about 0.15, or less than or equal to about 0.1.
  • the upstream section may have a substantially circular cross-section.
  • the upstream section may have a diameter substantially the same as a diameter of the rod of aerosol-generating substrate.
  • the upstream section has a substantially constant diameter along its entire length.
  • the upstream section may comprise a plug element.
  • the plug element may be a porous plug element.
  • the plug element may be formed of a solid cylindrical plug element having a filled cross-section. Such a plug element may be referred to as a ‘plain’ element.
  • the plug element may be porous, as described above, but does not have a tubular form and therefore does not provide a longitudinal flow channel.
  • the plug element may have a substantially uniform crosssection.
  • the plug element may help to reduce or prevent dislodgement of aerosol-generating material from the rod of aerosol-generating substrate.
  • the plug element may help to reduce or prevent any dislodged aerosol-generating material from falling out of the upstream end of the aerosol-generating article.
  • the plug element of the upstream section may abut the rod of aerosol-generating substrate.
  • the plug element may extend the entire length of the upstream section.
  • the aerosolgenerating article may comprise a plug element extending from the upstream end of the aerosolgenerating article to the upstream end of the rod of aerosol-generating substrate.
  • the plug element may have a diameter substantially the same as a diameter of the rod of aerosol-generating substrate.
  • the plug element may be a cellulose acetate plug.
  • the upstream section may comprise a cellulose acetate plug.
  • the upstream section may comprise a hollow tubular element.
  • the hollow tubular element may help to reduce or prevent dislodgement of aerosol-generating material from the rod of aerosol-generating substrate.
  • the hollow tubular element of the upstream section may abut the rod of aerosolgenerating substrate.
  • the hollow tubular element of the upstream section may extend the entire length of the upstream section.
  • the aerosol-generating article may comprise a hollow tubular element extending from the upstream end of the aerosol-generating article to the upstream end of the rod of aerosol-generating substrate.
  • the hollow tubular element of the upstream section may have a diameter substantially the same as a diameter of the rod of aerosol-generating substrate.
  • the hollow tubular element of the upstream section may be formed from any suitable material or combination of materials.
  • the hollow tubular element of the upstream section may be formed from one or more materials selected from the group consisting of: cellulose acetate; a paper based material such as paper or cardboard; and polymeric materials, such as low density polyethylene (LDPE).
  • LDPE low density polyethylene
  • Other suitable materials include polyhydroxyalkanoate (PHA) fibres.
  • PHA polyhydroxyalkanoate
  • the upstream section may comprise non-tobacco plant particles.
  • the upstream section may comprise particles selected from rosemary particles, star anise particles, ginger particles, clove particles, eucalyptus particles, or combinations thereof.
  • the upstream section may be heated indirectly.
  • the non-tobacco plant particles may generate one or more volatile flavour compounds that contribute to the sensory output of the aerosol-generating article.
  • the plug element may comprise non-tobacco plant particles.
  • the hollow tubular element may comprise non-tobacco plant particles.
  • the upstream section may comprise a flavourant.
  • suitable flavourants include, but are not limited to: menthol; mint, such as peppermint and spearmint; chocolate; liquorice; citrus and other fruit flavours; gamma octalactone; vanillin; ethyl vanillin; breath freshener flavours; spice flavours such as cinnamon; methyl salicylate; linalool; bergamot oil; geranium oil; lemon oil; ginger oil; and tobacco flavour.
  • the plug element may comprise a flavourant.
  • the upstream section comprises a hollow tubular element
  • the hollow tubular element may comprise a flavourant.
  • the upstream section may have a total aerosol former content of less than or equal to about 1 percent by, on a dry weight basis.
  • the upstream section may be substantially free of aerosol former. In other words, the upstream section may comprise about 0 percent by weight of aerosol former, on a dry weight basis.
  • the plug element may have a total aerosol former content of less than or equal to about 1 percent by weight, on a dry weight basis.
  • the plug element may be substantially free of aerosol former.
  • the hollow tubular element may have a total aerosol former content of less than or equal to about 1 percent by weight, on a dry weight basis.
  • the hollow tubular element may be substantially free of aerosol former.
  • the upstream section may have a nicotine content of less than or equal to about 0.1 percent by weight, on a dry weight basis.
  • the downstream section may be substantially free of nicotine. In other words, the downstream section may comprise about 0 percent by weight of nicotine, on a dry weight basis.
  • the plug element may have a nicotine content of less than or equal to about 0.1 percent by weight, on a dry weight basis.
  • the plug element may be substantially free of nicotine.
  • the hollow tubular element may have a nicotine content of less than or equal to about 0.1 percent by weight, on a dry weight basis.
  • the hollow tubular element may be substantially free of nicotine.
  • the upstream section may comprise a film.
  • the film of the upstream section may be for sealing the upstream end of the rod of aerosol-generating substrate.
  • the film of the upstream section may substantially prevent aerosol-generating material of the rod of aerosol-generating substrate from exiting the aerosol-generating article through the upstream end of the aerosol-generating article.
  • the film of the upstream section may substantially prevent air from flowing through the upstream end of the rod of aerosol-generating substrate. This may help to improve the shelf life of the aerosolgenerating article, and the quality and consistency of aerosol delivered to a user.
  • the film of the upstream section may abut the upstream end face of the rod of aerosolgenerating substrate.
  • the film of the upstream section may cover substantially the entire upstream end face of the rod of aerosol-generating substrate.
  • the film of the upstream section may be substantially air-impermeable.
  • the film of the upstream section may be configured to be removable from the aerosolgenerating article.
  • the film may be removed from the aerosol-generating article prior to use of the aerosol-generating article.
  • the film of the upstream section may have a length of less than or equal to about 1 millimetre, or less than or equal to about 0.5 millimetres.
  • the film of the upstream section may extend the entire length of the upstream section.
  • the upstream section may be circumscribed by a wrapper, such as a plug wrap.
  • the upstream section may be connected to the rod of aerosol-generating substrate by means of an outer wrapper.
  • the upstream section may be connected to both the rod of aerosolgenerating substrate and the downstream section by means of an outer wrapper.
  • the aerosol-generating article in accordance with the second and third aspects may not comprise an upstream section.
  • the upstream section and the downstream section may have different lengths. This may provide a user with a visual indication to distinguish the upstream end of the aerosol-generating article and the downstream end of the aerosol-generating article.
  • a length of the upstream section may be less than a length of the downstream section.
  • the aerosol-generating article may comprise a transverse plane of symmetry. This may simplify use of the aerosol-generating article with an aerosol-generating device, since the orientation in which the aerosol-generating article may be inserted into the aerosol-generating device may not affect the generation of aerosol and delivery of aerosol to a user. This may help to ensure a consistent user experience form one aerosol-generating article to another aerosolgenerating article.
  • an aerosol-generating system comprising: an aerosol-generating article and an aerosol-generating device, wherein the aerosol-generating article comprises a rod of aerosol-generating substrate comprising nicotine and having a total aerosol former content of at least about 10 percent by weight on a dry weight basis, wherein the aerosol-generating article has a length of less than or equal to about 40 millimetres, wherein a ratio of the length of the rod of aerosol-generating substrate to the length of the aerosol-generating article is at least about 0.65, wherein the aerosol-generating device comprises a heating chamber for receiving the aerosol-generating article and a heater for heating the rod of aerosol-generating substrate of the aerosol-generating article when the aerosolgenerating article is received within the heating chamber, and wherein the heating chamber of the aerosol-generating device has a length of within about 10 percent of the length of the aerosolgenerating article.
  • the aerosol-generating article of the aerosol-generating system according to the second aspect of the invention may have any of the features of the aerosolgenerating article described herein.
  • the aerosol-generating article of the aerosol-generating system according to the second aspect of the invention may be an aerosol-generating article in accordance with the first aspect of the invention.
  • the heating chamber of the aerosol-generating device may be referred to as the cavity of the aerosol-generating device.
  • the heating chamber may be substantially cylindrical.
  • the heating chamber of the aerosol-generating device having a length of within about 10 percent of the length of the aerosol-generating article may improve the efficiency of heating of the aerosol-generating substrate of the aerosol-generating article.
  • the heating chamber of the aerosol-generating device may have a length of within about 5 percent of the length of the aerosol-generating article.
  • the heating chamber of the aerosol-generating device may have a length substantially the same as a length of the aerosol-generating article. This may establish a tight fit of the aerosolgenerating article with the heating chamber of the aerosol-generating device.
  • the heating chamber of the aerosol-generating device may have a length greater than a length of the aerosol-generating article.
  • the length of the heating chamber may be such that at least about 90 percent of the length of the aerosol-generating article is received within the heating chamber, when the aerosolgenerating article is received within the heating chamber.
  • the length of the heating chamber may be such that the aerosol-generating article is enclosed within the heating chamber, when the aerosol-generating article is received within the heating chamber.
  • a diameter of the heating chamber may be within about 10 percent of a diameter of the aerosol-generating article, or within about 5 percent of a diameter of the aerosol-generating article. This may improve the efficiency of heating of the aerosol-generating substrate of the aerosol-generating article.
  • a diameter of the heating chamber may be substantially the same as a diameter of the aerosol-generating article. This may establish a tight fit of the aerosol-generating article within the heating chamber of the aerosol-generating device.
  • a diameter of the heating chamber may be greater than a diameter of the aerosolgenerating article.
  • the aerosol-generating device may comprise a housing defining the heating chamber.
  • the aerosol-generating device may comprise a peripheral wall.
  • the peripheral wall may define the heating chamber.
  • the peripheral wall may be configured to engage with the aerosolgenerating article received within the heating chamber in a tight fit manner, so that there is substantially no gap or empty space between the peripheral wall and the aerosol-generating article received within the heating chamber.
  • the heater may be any suitable type of heater.
  • the heater is an external heater.
  • the heater may externally heat the aerosol-generating article when received within the aerosol-generating device.
  • Such an external heater may be configured to circumscribe the aerosol-generating article when inserted in or received within the aerosol-generating device.
  • the external heater may be configured to circumscribe substantially the entire length of the rod of aerosol-generating substrate of the aerosol-generating article when the aerosol-generating article is inserted in or received within the aerosol-generating device.
  • the external heater may circumscribe the heating chamber.
  • the heater may be arranged for insertion into the rod of aerosolgenerating substrate of the aerosol-generating article when the aerosol-generating article is received within the heating chamber.
  • the heater may be positioned within the heating chamber.
  • the heater may comprise at least one heating element.
  • the heater may comprise a plurality of heating elements.
  • the heating element may be a resistive heating element.
  • the heater may comprise an inductive heating arrangement.
  • the inductive heating arrangement may comprise an inductor coil.
  • the heater may comprise an inductive heating element.
  • the inductive heating element may be a susceptor.
  • the aerosol-generating device may be an electrically-operated aerosol-generating device.
  • the aerosol-generating device may comprise a power supply.
  • the power supply may be a battery.
  • the aerosol-generating device may comprise control electronics or circuitry.
  • the control electronics may control the supply of electrical power from the power supply to the heater.
  • the aerosol-generating device may comprise a mouthpiece.
  • a container comprising a plurality of aerosol-generating articles, wherein each of the plurality of aerosol-generating articles comprises a rod of aerosol-generating substrate, the rod of aerosol-generating substrate of each of the plurality of aerosol-generating articles comprising nicotine and having a total aerosol former content of at least about 10 percent by weight on a dry weight basis, wherein each of the plurality of aerosol-generating articles has a length of less than or equal to about 40 millimetres, and wherein each of the plurality of aerosol-generating articles has a ratio of the length of the rod of aerosol-generating substrate to the length of the aerosol-generating article of at least about 0.65.
  • each of the plurality of aerosol-generating articles of the container according to the third aspect of the invention may have any of the features of the aerosolgenerating article described herein.
  • Each of the plurality of aerosol-generating articles of the container according to the second aspect of the invention may be an aerosol-generating article in accordance with the first aspect of the invention.
  • the plurality of aerosol-generating articles may be identical to one another.
  • the container may comprise up to 30 aerosol-generating articles, up to 25 aerosolgenerating articles, or up to 20 aerosol-generating articles.
  • the container may be configured to contain up to 30 aerosol-generating articles, up to 25 aerosol-generating articles or up to 20 aerosol-generating articles.
  • a box portion of the container may be configured to contain up to 30 aerosol-generating articles, up to 25 aerosol-generating articles or up to 20 aerosol-generating articles therein.
  • the container may comprise a box portion.
  • the plurality of aerosol-generating articles may be located within the box portion.
  • the box portion may be formed from a paper based material, such as cardboard.
  • the container may comprise a box portion and a lid portion.
  • the container may be a hinge lid container.
  • the box portion and the lid portion may be connected about a hinge line.
  • the lid portion may depend from the box portion along a hinge line.
  • the lid portion may be moveable about the hinge line between an open position, in which the aerosol-generating articles may be removed from the container, and a closed position, in which the aerosol-generating articles cannot be removed from the container.
  • the box portion and the lid portion may be formed from a same blank.
  • the blank may be a laminar blank, such as a laminar cardboard blank.
  • the laminar blank may have a basis weight of between about 100 grams per square metre and about 350 grams per square metre.
  • the laminar blank may have a thickness of at least about 200 micrometres.
  • the container may comprise an inner frame received within the box portion.
  • the plurality of aerosol-generating articles may be located within the inner frame.
  • a portion of the inner frame front wall may extend beyond an upper edge of the box portion front wall.
  • the container may comprise an inner package.
  • the plurality of aerosol-generating articles may be located within the inner package.
  • the inner package may be located within a box portion of the container.
  • the plurality of aerosol-generating articles may be provided within the container in the form of a bundle in the inner package.
  • the inner package may be formed of metal foil or metallised paper.
  • the inner package may have an access opening through which the aerosol-generating articles may be removed when a lid of the container is in a respective open position.
  • the height of the container may be within about 20 percent of the length of each of the plurality of aerosol-generating articles, or within about 10 percent of the length of each of the plurality of aerosol-generating articles.
  • the height of the container may be greater than the length of each of the plurality of aerosol-generating articles.
  • the height of the container is measured in an upright position and when the container is in a closed configuration.
  • the height of the container is the maximum dimension of the container in the direction extending between a bottom wall of the container and a top wall of the container.
  • the top wall of the container may be a part of a lid portion of the container.
  • the longitudinal direction of each of the plurality of aerosol-generating articles may be substantially perpendicular to a bottom wall of the container.
  • the longitudinal direction of each of the plurality of aerosol-generating articles may be substantially parallel to a side wall of the container.
  • each of the plurality of aerosol-generating articles may be substantially parallel to the direction between a bottom wall of the container and a top wall of the container, when the container is in a closed position.
  • each of the plurality of aerosol-generating articles may be substantially perpendicular to a hinge line along which a lid portion of the container depends from a box portion of the container.
  • EX1 An aerosol-generating article comprising a rod of aerosol-generating substrate.
  • EX2 An aerosol-generating article according to EX1 , wherein a ratio of the length of the rod of aerosol-generating substrate to the length of the aerosol-generating article is at least about 0.5.
  • EX3 An aerosol-generating article according to EX1 or EX2, wherein a ratio of the length of the rod of aerosol-generating substrate to the length of the aerosol-generating article is at least about 0.65.
  • EX4 An aerosol-generating article according to any one of EX1 or EX3, wherein a ratio of the length of the rod of aerosol-generating substrate to the length of the aerosol-generating article is at least about 0.75.
  • EX5 An aerosol-generating article according to any one of EX1 or EX4, wherein the aerosol-generating article has a length of less than or equal to about 55 millimetres.
  • EX6 An aerosol-generating article according to any one of EX1 to EX5, wherein the aerosol-generating article has a length of less than or equal to about 40 millimetres.
  • EX7 An aerosol-generating article according to any one of EX1 to EX6, wherein the aerosol-generating article is substantially cylindrical.
  • EX8 An aerosol-generating article according to EX7, wherein the aerosol-generating article has a diameter of between about 5 millimetres and about 8 millimetres.
  • EX9 An aerosol-generating article according to EX7 or EX8, wherein a ratio of the length of the aerosol-generating article to the diameter of the aerosol-generating article is less than or equal to about 6.
  • EX10 An aerosol-generating article according to any one of EX1 to EX6, wherein rod of the aerosol-generating substrate is a planar rod of aerosol-generating substrate.
  • EX11 An aerosol-generating article according to any one of EX1 to EX10, wherein the aerosol-generating article has an overall RTD of less than or equal to about 40 millimetres H2O.
  • EX12 An aerosol-generating article according to any one of EX1 to EX11 , wherein a ratio of the RTD of the rod of aerosol-generating substrate to the overall RTD of the aerosol-generating article is at least about 0.8.
  • EX13 An aerosol-generating article according to any one of EX1 to EX12, wherein the rod of aerosol-generating substrate has a length of at least about 8 millimetres.
  • EX14 An aerosol-generating article according to any one of EX1 to EX13, wherein a ratio of the weight of the rod of aerosol-generating substrate to the overall weight of the aerosolgenerating article is at least about 0.75.
  • EX15 An aerosol-generating article according to any one of EX1 to EX14, wherein the rod of aerosol-generating substrate has a weight of at least about 90 milligrams.
  • EX16 An aerosol-generating article according to any one of EX1 to EX15, wherein the rod of aerosol-generating substrate has a density of at least about 150 milligrams per cubic centimetre.
  • EX17 An aerosol-generating article according to any one of EX1 to EX16, wherein the RTD of the rod of aerosol-generating substrate per unit length is at least about 0.3 millimetres H2O per millimetre.
  • EX18 An aerosol-generating article according to any one of EX1 to EX17, wherein the RTD of the rod of aerosol-generating substrate per unit length is less than or equal to about 1 millimetre H2O per millimetre.
  • EX19 An aerosol-generating article according to any one of EX1 to EX18, wherein the rod of aerosol-generating substrate comprises an aerosol former.
  • EX20 An aerosol-generating article according to any one of EX1 to EX19, wherein the rod of aerosol-generating substrate comprises an aerosol former substantially along the entire length of the rod of aerosol-generating substrate.
  • EX21 An aerosol-generating article according to any one of EX1 to EX20, wherein the rod of aerosol-generating substrate has a total aerosol former content of at least about 10 percent.
  • EX22 An aerosol-generating article according to any one of EX1 to EX21 , wherein the rod of aerosol-generating substrate comprises nicotine.
  • EX23 An aerosol-generating article according to any one of EX1 to EX22, wherein the rod of aerosol-generating substrate comprises nicotine substantially along the entire length of the rod of aerosol-generating substrate.
  • EX24 An aerosol-generating substrate according to any one of EX1 to EX23, wherein the rod of aerosol-generating substrate comprises one or more segments of aerosol-generating substrate
  • EX25 An aerosol-generating article according to EX24, wherein each segment of aerosolgenerating substrate of the rod of aerosol-generating substrate has a total aerosol former content of at least about 10 percent.
  • EX26 An aerosol-generating article according to EX24 or EX25, wherein each segment of aerosol-generating substrate of the rod of aerosol-generating substrate comprises nicotine.
  • EX28 An aerosol-generating article according to any one of EX1 to EX27, wherein the rod of aerosol-generating substrate comprises tobacco material.
  • EX29 An aerosol-generating article according to any one of EX1 to EX28, wherein the rod of aerosol-generating substrate comprises a solid aerosol-generating film.
  • EX30 An aerosol-generating article according to any one of EX1 to EX29 further comprising a downstream section located downstream of the rod of aerosol-generating substrate.
  • EX31 An aerosol-generating article according to EX30, wherein a ratio of the length of the downstream section to the length of the aerosol-generating article is less than or equal to about 0.3, or less than or equal to about 0.2.
  • EX32 An aerosol-generating article according to EX30 or EX31 , wherein the downstream section comprises a hollow tubular element or a plug element.
  • EX33 An aerosol-generating article according to any one of EX1 to EX29, wherein the rod of aerosol-generating substrate is located at the downstream end of the aerosol-generating article.
  • EX34 An aerosol-generating article according to any one of EX1 to EX33, further comprising an upstream section located upstream of the rod of aerosol-generating substrate.
  • EX35 An aerosol-generating article according to EX34, wherein a ratio of the length of the upstream section to the length of the aerosol-generating article is less than or equal to about 0.3, or less than or equal to about 0.2.
  • EX36 An aerosol-generating article according to EX34 or EX35, wherein the upstream section comprises a hollow tubular element or a plug element.
  • EX37 An aerosol-generating article according to any one of EX1 to EX33, wherein the rod of aerosol-generating substrate is located at the upstream end of the aerosol-generating article.
  • EX38 An aerosol-generating system comprising: an aerosol-generating device and an aerosol-generating article according to any one of EX1 to EX37.
  • EX39 An aerosol-generating system according to EX38, wherein the aerosol-generating device comprises a heating chamber for receiving the aerosol-generating article, and wherein the heating chamber has a length of within 10 percent of the length of the aerosol-generating article.
  • EX40 A container comprising a plurality of aerosol-generating articles according to any one of EX1 to EX37.
  • EX41 A container according to EX40, wherein the container comprises up to 30 aerosolgenerating articles.
  • EX42 A container according to EX40 or EX41 , wherein the container is a hinge lid container.
  • EX43 A container according to any one of EX40 to EX42, wherein the container comprises a box portion formed from a paper based material.
  • EX44 A container according to any one of EX40 to EX43, wherein the height of the container is within about 20 percent of the length of each of the plurality of aerosol-generating articles.
  • Figure 1 shows a schematic side sectional view of an aerosol-generating article in accordance with a first embodiment of the first aspect of the invention
  • Figure 2 shows a schematic side sectional view of an aerosol-generating article in accordance with a second embodiment of the first aspect of the invention
  • Figure 3 shows a schematic side sectional view of an aerosol-generating article in accordance with a third embodiment of the first aspect of the invention
  • Figure 4 shows a schematic side sectional view of an aerosol-generating article in accordance with a fourth embodiment of the first aspect of the invention
  • Figure 5 shows a schematic side sectional view of an aerosol-generating article in accordance with a fifth embodiment of the first aspect of the invention
  • Figure 6 shows a schematic side sectional view of an aerosol-generating system in accordance with a first embodiment of the second aspect of the invention.
  • Figure 7 shows a schematic perspective view of a container in accordance with a first embodiment of the third aspect of the invention.
  • Figure 1 shows an aerosol-generating article 100 in accordance with a first embodiment of the first aspect of the invention having an upstream end 102 and a downstream end 104.
  • the aerosol-generating article 100 comprises a rod of aerosol-generating substrate 110 and an upstream section 120 located upstream of the rod of aerosol-generating substrate 110.
  • the rod of aerosol-generating substrate 110 extends from the downstream end of the upstream section 120 to the downstream end 104 of the aerosol-generating article 100.
  • the upstream section 120 extends the from the upstream end of the aerosol-generating article 100 to the upstream end of the rod of aerosol-generating substrate 110.
  • the aerosol-generating article 100 has a length 106 of about 25 millimetres.
  • the rod of aerosol-generating substrate 110 has a length 116 of about 17.5 millimetres. Accordingly, a ratio of the length of the rod of aerosol-generating substrate to the length of the aerosol-generating article is about 0.7.
  • the upstream section 120 comprises a hollow tubular element 122 extending the entire length of the upstream section 120.
  • the hollow tubular element 122 has a length of about 7.5 millimetres.
  • the hollow tubular element 122 has a negligible resistance to draw. Accordingly, the rod of aerosol-generating substrate contributes substantially to all of the resistance to draw of the aerosol-generating article.
  • the rod of aerosol-generating substrate 110 comprises a single segment of aerosolgenerating substrate extending the entire length of the rod of aerosol-generating substrate 110.
  • the rod of aerosol-generating substrate 110 comprises nicotine and has an aerosol former content of at least about 10 percent by weight, based on a dry weight basis of the rod of aerosolgenerating substrate 110.
  • the rod of aerosol-generating substrate 110 comprises tobacco.
  • the aerosol-generating article has a substantially constant diameter along its entire length.
  • the aerosol-generating article has a diameter of about 7.1 millimetres.
  • FIG. 2 shows an aerosol-generating article 200 in accordance with a second embodiment of the first aspect of the invention having an upstream end 102 and a downstream end 204.
  • the aerosol-generating article 200 shown in Figure 2 is similar to the aerosol-generating article 100 shown in Figure 1 and like reference numerals are used to designate like parts.
  • the aerosol-generating article 200 differs from the aerosol-generating article 100 shown in Figure 1 in that the rod of aerosol-generating substrate 210 of the aerosol-generating article 200 comprises two segments of aerosol-generating substrate: a first segment of aerosolgenerating substrate 212 and a second segment of aerosol-generating substrate 214 located downstream of and abutting the first segment of aerosol-generating substrate 212.
  • the length of the first segment of aerosol-generating substrate 212 is substantially the same as the length of the second segment of aerosol-generating substrate 214.
  • the overall length 216 of the rod of aerosol-generating substrate 210 is about 17.5 millimetres, which is the sum of the length of the first segment of aerosol-generating substrate 212 and the length of the second segment of aerosol-generating substrate 214.
  • the first segment of aerosol-generating substrate 412 is formed of a solid aerosolgenerating substrate comprising nicotine and having a total aerosol former content of at least about 10 percent by weight on a dry weight basis.
  • the second segment of aerosol-generating substrate 414 is formed of a solid aerosol-generating substrate comprising nicotine and having a total aerosol former content of at least about 10 percent.
  • FIG 3 shows an aerosol-generating article 300 in accordance with a third embodiment of the first aspect of the invention having an upstream end 302 and a downstream end 304.
  • the aerosol-generating article 300 shown in Figure 3 is similar to the aerosol-generating article 100 shown in Figure 1 and like reference numerals are used to designate like parts.
  • the aerosol-generating article 300 differs from the aerosol-generating article 100 shown in Figure 1 in that the upstream section 320 comprises a plug element 322, such as a cellulose acetate plug, rather than a hollow tubular element.
  • the plug element 322 has a length of about 5 millimetres.
  • the aerosol-generating article 300 also differs from the aerosol-generating article 100 shown in Figure 1 in that the aerosol-generating article 300 comprises a downstream section located downstream of the rod of aerosol-generating substrate 110 and extending from the downstream end of the rod of aerosol-generating generating substrate 110 to the downstream end 304 of the aerosol-generating article 300.
  • the downstream section comprises a substantially air-impermeable film 330.
  • the substantially air-impermeable film 330 may be configured to be removable from the aerosol-generating article 300 prior to use of the aerosol-generating article 300.
  • the film 330 extends the entire length of the downstream section and has a length of about 1 millimetre. Accordingly, the aerosol-generating article 300 has an overall length of about 26 millimetres.
  • the length 116 of the rod of aerosol-generating article 110 is about 71 % of the overall length 306 of the aerosol-generating article 300.
  • Figure 4 shows an aerosol-generating article 400 in accordance with a fourth embodiment of the first aspect of the invention having an upstream end 402 and a downstream end 404.
  • the aerosol-generating article 400 shown in Figure 4 is similar to the aerosol-generating article 100 shown in Figure 1 and like reference numerals are used to designate like parts.
  • the aerosol-generating article 400 differs from the aerosol-generating article 100 shown in Figure 1 in that the hollow tubular element 422 of the upstream section 420 of the aerosolgenerating article 400 has a different length to the hollow tubular element 122 of the upstream section 120 of the aerosol-generating article 100 shown in Figure 1 , and in that the aerosolgenerating article 400 comprises a downstream section 420 located downstream of the rod of aerosol-generating substrate 110 and extending form the downstream end of the rod of aerosolgenerating substrate 110 to the downstream end 404 of the aerosol-generating article 400.
  • the downstream section 430 comprises another hollow tubular element 432.
  • the hollow tubular element 432 of the downstream section is substantially identical to the hollow tubular element 422 of the upstream section 420. Accordingly, the aerosol-generating article has a transverse plane of symmetry.
  • the aerosol-generating article 400 has a length 406 of about 25 millimetres.
  • the rod of aerosol-generating substrate 110 has a length 116 of about 7.5 millimetres.
  • the rod of aerosol-generating substrate 110 has a length 116 of about 70% of the length 406 of the aerosolgenerating article 400.
  • a ratio of the length 116 of the rod of aerosol-generating substrate 110 to the length 406 of the aerosol-generating article is about 0.7.
  • Figure 5 shows an aerosol-generating article 500 in accordance with a fifth embodiment of the first aspect of the invention having an upstream end 502 and a downstream end 504.
  • the aerosol-generating article 500 shown in Figure 5 is similar to the aerosol-generating article 400 shown in Figure 4 in that it comprises an upstream hollow tubular element, a rod of aerosol-generating substrate and a downstream hollow tubular element.
  • the aerosol-generating article 500 differs from the aerosolgenerating article 400 shown in Figure 4 in the lengths of the upstream hollow tubular element, the rod of aerosol-generating substrate and the downstream hollow tubular element.
  • the rod of aerosol-generating substrate 510 of the aerosol-generating article 500 has a length 516 of about 20 millimetres.
  • the upstream section 520 of the aerosol-generating article 500 comprises a hollow tubular element 522 having a length of about 2.5 millimetres.
  • the downstream section 530 of the aerosol-generating article 500 comprises a hollow tubular element 532 having a length of about 2.5 millimetres. Accordingly, the aerosol-generating article 500 has a length 506 of about 25 millimetres. Accordingly, the length 516 of the rod of aerosol-generating substrate 516 is about 80% of the length 506 of the aerosol-generating article 500.
  • FIG. 6 shows an aerosol-generating system in accordance with a first embodiment of the second aspect of the invention.
  • the aerosol-generating system comprises an aerosolgenerating device 600 and an aerosol-generating article 700.
  • the aerosol-generating article 700 has an upstream end 702 and a downstream end 704.
  • air may be drawn into the aerosol-generating article 700 through the upstream end 702.
  • aerosol may be drawn out of the aerosol-generating article 700 through the downstream end 704 for delivery to a user.
  • the aerosol-generating article 700 comprises a rod of aerosol-generating substrate 710 extending the entire length of the aerosol-generating article 700.
  • the aerosol-generating article 700 has a length of about 20 millimetres.
  • the rod of aerosol-generating substrate 710 has an aerosol former content of at least about 10 percent by weight, on a dry weight basis. More particularly, the rod of aerosol-generating substrate 710 has a glycerine content of at least about 10 percent by weight, on a dry weight basis.
  • the rod of aerosol-generating substrate 710 comprises nicotine.
  • the aerosol-generating device 600 comprises a housing defining a heating chamber.
  • the aerosol-generating device comprises a heater 610 circumscribing the heating chamber.
  • the heater 610 is configured to heat the rod of aerosol-generating substrate 710 of the aerosolgenerating article 700.
  • the aerosol-generating article 700 is inserted into the heating chamber.
  • the heating chamber is dimensioned such that the entirety of the aerosol-generating article is received within the heating chamber during use.
  • the heating chamber has a length substantially the same as a length of the aerosol-generating article 700.
  • the aerosol-generating device 600 comprises a power supply in the form of a battery (not shown) and control circuitry (not shown).
  • the control circuitry controls the supply of electrical power from the battery to the heater 610.
  • the aerosol-generating device 600 comprises a mouthpiece 620. During use of the aerosol-generating system, aerosol is drawn out of the aerosol-generating device 600 through the mouthpiece 620 for delivery to a user.
  • the aerosol-generating article of the aerosol-generating system may be any of the aerosol-generating articles 100, 200, 300, 400, 500 shown in Figures 1 , 2, 3, 4 and 5, respectively.
  • Figure 7 shows a container 800 in accordance with a first embodiment of the third aspect of the invention.
  • the container 800 is a hinge lid container 800 comprising a box portion 810 and a lid portion 820 depending from the box portion 810 along a hinge line.
  • the lid portion 820 is moveable about the hinge line between an open position (as shown in Figure 7) and a closed position.
  • the container 800 comprises an inner frame 830 located within the box portion 810.
  • the container 800 comprises a plurality of aerosol-generating articles (not shown) located within the inner frame 830.
  • the box portion 810 and the inner frame 830 are both configured such that up to about 30 aerosol-generating articles may be stored in the inner frame 830.
  • the aerosolgenerating articles may be stored in the box portion 810 in an upright position, wherein the longitudinal direction of the box portion 810 is substantially perpendicular to a bottom wall of the container.
  • Each of the plurality of aerosol-generating articles comprises a rod of aerosol-generating substrate, the aerosol-generating substrate of the rod of aerosol-generating substrate of each of the plurality of aerosol-generating articles comprising nicotine and having a total aerosol former content of at least about 10 percent by weight on a dry weight basis.
  • Each of the plurality of aerosol-generating articles has a length of less than or equal to about 40 millimetres.
  • Each of the plurality of aerosol-generating articles has a ratio of the length of the rod of aerosol-generating substrate to the length of the aerosol-generating article of at least about 0.75.
  • the plurality of aerosol-generating articles are identical to one another.
  • the plurality of aerosol-generating articles may comprise any of the aerosol-generating articles 100, 200, 300, 400, 500, and 700 shown in Figures 1 , 2, 3, 4, 5 and 6, respectively.

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  • Medicinal Preparation (AREA)

Abstract

L'invention concerne un article de génération d'aérosol (100) comprenant : une tige de substrat de génération d'aérosol (110) comprenant de la nicotine et présentant une teneur totale en agent de formation d'aérosol d'au moins environ 10 pour cent en poids ; et une section amont (120) située en amont de la tige de substrat de génération d'aérosol (110), l'article de génération d'aérosol (100) ayant une longueur inférieure ou égale à environ 40 millimètres, et un rapport de la longueur (116) de la tige de substrat de génération d'aérosol (110) sur la longueur (106) de l'article de génération d'aérosol (100) étant d'au moins environ 0,65.
PCT/EP2024/088226 2023-12-21 2024-12-20 Article de génération d'aérosol présentant un rapport de longueurs élevé de substrat de génération d'aérosol Pending WO2025133331A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP23219097.5 2023-12-21
EP23219097 2023-12-21

Publications (1)

Publication Number Publication Date
WO2025133331A1 true WO2025133331A1 (fr) 2025-06-26

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Application Number Title Priority Date Filing Date
PCT/EP2024/088226 Pending WO2025133331A1 (fr) 2023-12-21 2024-12-20 Article de génération d'aérosol présentant un rapport de longueurs élevé de substrat de génération d'aérosol

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WO (1) WO2025133331A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2534210A (en) * 2015-01-19 2016-07-20 Ngip Res Ltd Aerosol-generating article
WO2020115151A1 (fr) 2018-12-06 2020-06-11 Philip Morris Products S.A. Article de génération d'aérosol avec un contenu de générateur d'aérosol élevé
WO2022167495A1 (fr) * 2021-02-02 2022-08-11 Philip Morris Products S.A. Article de génération d'aérosol avec segments de bouchon entourant un élément de génération d'aérosol
JP2023055920A (ja) * 2017-05-24 2023-04-18 イルーシッド８ ホールディングズ リミテッド エアロゾル生成装置用のタバコ含有消耗品

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GB2534210A (en) * 2015-01-19 2016-07-20 Ngip Res Ltd Aerosol-generating article
JP2023055920A (ja) * 2017-05-24 2023-04-18 イルーシッド８ ホールディングズ リミテッド エアロゾル生成装置用のタバコ含有消耗品
WO2020115151A1 (fr) 2018-12-06 2020-06-11 Philip Morris Products S.A. Article de génération d'aérosol avec un contenu de générateur d'aérosol élevé
WO2022167495A1 (fr) * 2021-02-02 2022-08-11 Philip Morris Products S.A. Article de génération d'aérosol avec segments de bouchon entourant un élément de génération d'aérosol

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