WO2025017147A1

WO2025017147A1 - Aerosol-generating article comprising two substrates

Info

Publication number: WO2025017147A1
Application number: PCT/EP2024/070444
Authority: WO
Inventors: Yohanes DJUNAEDI; Charlie Victoria Lazuardi IWAN; Dinar Dwi LAKSMANA
Original assignee: Philip Morris Products SA
Current assignee: Philip Morris Products SA
Priority date: 2023-07-19
Filing date: 2024-07-18
Publication date: 2025-01-23
Anticipated expiration: 2026-01-19

Abstract

There is provided an aerosol-generating article (200). The aerosol-generating article (200) comprises a first aerosol-generating substrate (202). The aerosol-generating article (200) comprises a second aerosol-generating substrate (204). The second aerosol-generating substrate (204) is downstream of the first aerosol-generating substrate (202). The aerosol-generating article (200) comprises a wrapper (212). The wrapper (212) circumscribes at least one of the first aerosol-generating substrate (202) and the second aerosol-generating substrate (204). The first aerosol-generating substrate (202) comprises one or more botanical components and the second aerosol-generating substrate (204) comprises one or more botanical components. One or both of the first aerosol-generating substrate (202) and the second aerosol-generating substrate (204) comprise greater than or equal to 5 percent by weight of one or more botanical components. The composition of the first aerosol-generating substrate (202) and the composition of the second aerosol-generating substrate (204) are different. One or both of the first aerosol-generating substrate (202) and the second aerosol-generating substrate (204) comprise tobacco or a tobacco material.

Description

AEROSOL-GENERATING ARTICLE COMPRISING TWO SUBSTRATES

The present invention relates to an aerosol-generating article comprising a first aerosolgenerating substrate and a second aerosol-generating substrate. One or both of the first aerosolgenerating substrate and the second aerosol-generating substrate comprises a botanical component.

Aerosol-generating articles in which an aerosol-generating substrate, such as a tobaccocontaining substrate, are combusted or heated rather than combusted, are known in the art. It is known to incorporate flavourant additives into aerosol-generating articles in order to provide additional flavours to the consumer during use. Flavourants may be used to enhance the flavours produced upon combusting or heating the aerosol-generating substrate within the aerosolgenerating article. A flavourant can be used to deliver a gustatory sensation (taste), an olfactory sensation (smell), or both a gustatory and an olfactory sensation to the user inhaling the aerosol.

It is known to provide flavourants in conventional combustible cigarettes, which are smoked by lighting the end of the cigarette opposite the mouthpiece so that the tobacco rod combusts, generating inhalable smoke. One or more flavourants are typically mixed with the tobacco in the tobacco rod in order to provide additional flavour to the mainstream smoke as the tobacco is combusted. Such flavourants can be provided, for example, as essential oil, or as natural botanical material such as natural cut cloves. An example of such a smoking article is known as a “kretek” cigarette, in which clove material, such as clove particles, is included with the tobacco in the tobacco rod. As the cloves in kretek cigarettes are burnt, their flavour and aroma are released into the mainstream smoke.

It would be desirable to provide an aerosol-generating article which delivers an aerosol with improved flavour and organoleptic properties. Furthermore, it would also be desirable to improve the customisation of the flavour and organoleptic properties of an aerosol-generating article.

According to the present invention there is provided an aerosol-generating article. The aerosol-generating article may comprise a first aerosol-generating substrate. The aerosolgenerating article may comprise a second aerosol-generating substrate. The second aerosolgenerating substrate may be downstream of the first aerosol-generating substrate. The aerosolgenerating article may comprise a wrapper. The wrapper may circumscribe at least one of the first aerosol-generating substrate and the second aerosol-generating substrate. One or both of the first aerosol-generating substrate and the second aerosol-generating substrate may comprise greater than or equal to 5 percent by weight of one or more botanical components. The composition of the first aerosol-generating substrate and the composition of the second aerosolgenerating substrate may be different. One or both of the first aerosol-generating substrate and the second aerosol-generating substrate may comprise tobacco or a tobacco material. According to the present invention there is provided an aerosol-generating article. The aerosol-generating article comprises a first aerosol-generating substrate. The aerosol-generating article comprises a second aerosol-generating substrate. The second aerosol-generating substrate is downstream of the first aerosol-generating substrate. The aerosol-generating article comprises a wrapper. The wrapper circumscribes at least one of the first aerosol-generating substrate and the second aerosol-generating substrate. One or both of the first aerosolgenerating substrate and the second aerosol-generating substrate comprise greater than or equal to 5 percent by weight of one or more botanical components. The composition of the first aerosolgenerating substrate and the composition of the second aerosol-generating substrate are different. One or both of the first aerosol-generating substrate and the second aerosol-generating substrate comprise tobacco or a tobacco material.

Advantageously, providing a first aerosol-generating substrate and a second aerosolgenerating substrate, each having different compositions, wherein one or both of the first aerosolgenerating substrate and the second aerosol-generating substrate comprise greater than or equal to 5 percent by weight of one or more botanical components, and wherein one or both of the first aerosol-generating substrate and the second aerosol-generating substrate comprise tobacco or a tobacco material may allow the flavours provided by each of the two aerosol-generating substrates to be combined and mixed in the generated aerosol. Combining and mixing flavours may improve the overall flavour and organoleptic properties of the generated aerosol.

Advantageously, providing a first aerosol-generating substrate and a second aerosolgenerating substrate, each having different compositions, wherein one or both of the first aerosolgenerating substrate and the second aerosol-generating substrate comprise greater than or equal to 5 percent by weight of one or more botanical components, and wherein one or both of the first aerosol-generating substrate and the second aerosol-generating substrate comprise tobacco or a tobacco materials improves the customisation of flavours. For example, new flavours of aerosol may be generated by providing different combinations of first aerosol-generating substrates and second aerosol-generating substrates. In other words, the ability to provide different compositions for each of the first aerosol-generating substrates and second aerosol-generating substrates may improve the versatility with which the article can be configured, when compared to known articles comprising a single aerosol-generating substrate.

Advantageously, the ability to easily provide different compositions for each of the first aerosol-generating substrates and second aerosol-generating substrates may improve the versatility with which the article can be configured without increasing the complexity of manufacturing of the article and without requiring modifications to existing manufacturing processes. This may also reduce manufacturing costs. For example, existing manufacturing techniques can be used to provide each of the first aerosol-generating substrates and second aerosol-generating substrates with different compositions, and then the first aerosol-generating substrates and second aerosol-generating substrates may be combined in different configurations relative to each other to arrive at the desired flavour of generated aerosol. This may result in the generation of new and unique flavours of generated aerosol, thereby enhancing the user experience.

Advantageously, providing the second aerosol-generating substrate downstream of the first aerosol-generating substrate may improve the mixing of the flavours of each of the first aerosol-generating substrate and the second aerosol-generating substrate. Improving the mixing of the flavours may improve the overall flavour and organoleptic properties of the generated aerosol.

Advantageously, providing the second aerosol-generating substrate downstream of the first aerosol-generating substrate may improve the filtration of aerosol generated by the first aerosol-generating substrate as a result of the aerosol passing downstream through the second aerosol-generating substrate. Improving the filtration of the aerosol may be particularly advantageous where the aerosol-generating article does not comprise a mouth-end filter. Advantageously, providing the second aerosol-generating substrate downstream of the first aerosol-generating substrate may allow for the provision of an aerosol-generating article which does not comprise a mouth-end filter. Providing an aerosol-generating article without a mouthend filter may reduce waste following use of the aerosol-generating article.

As used herein, the term ‘aerosol-generating substrate’ denotes a substrate capable of releasing volatile compounds upon heating or combusting, which can condense to form an aerosol.

As used herein, the term “aerosol” denotes 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.

As used herein, the term “aerosol-generating article” denotes an article comprising an aerosol-generating substrate that is capable of releasing volatile compounds that can form an aerosol. An aerosol-generating article may be disposable.

As used herein, the term “botanical component” denotes a plant material which excludes tobacco or tobacco material.

As used herein, the terms ’upstream’, ‘downstream’, proximal’ and ‘distal’ are used to describe the relative positions of elements, or portions of elements, of aerosol-generating articles, aerosol-generating devices and aerosol-generating systems according to the disclosure. Aerosolgenerating articles as described herein may comprise a proximal end through which, in use, an aerosol exits the aerosol-generating article. The proximal end may also be referred to as the mouth end. In use, a user draws on the proximal end or mouth end of the aerosol-generating article in order to inhale an aerosol generated by the aerosol-generating article. The aerosolgenerating article may comprise a distal end opposite the proximal end or mouth end. The proximal end or mouth end of the aerosol-generating article may also be referred to as the downstream end. The distal end of the aerosol-generating article may also be referred to as the upstream end. Components, or portions of components, of the aerosol-generating article may be described as being upstream or downstream of one another based on their relative positions between the proximal or downstream end and the distal or upstream end of the aerosolgenerating article.

As used herein the term ‘longitudinal’ is used to describe the direction between the downstream end or proximal end and the opposed upstream end or distal end of aerosolgenerating articles, aerosol-generating devices and aerosol-generating systems according to the invention.

As used herein, the term ‘length’ is used to describe the maximum dimension of elements, or portions of elements, of aerosol-generating articles, aerosol-generating devices and aerosolgenerating systems according to the disclosure in the longitudinal direction or along a longitudinal axis.

As used herein, the term ‘transverse’ is used to describe the direction perpendicular to the longitudinal direction.

As used herein, the term ‘width’ is used to describe the maximum transverse dimension of elements, or portions of elements, of aerosol-generating articles, aerosol-generating devices and aerosol-generating systems according to the disclosure. For the avoidance of doubt, as used herein the term ‘diameter’ may also be used to refer to the ‘width’ of elements, or portions of elements, of aerosol-generating articles, aerosol-generating devices and aerosol-generating systems according to the disclosure, which have a circular transverse cross-section.

Unless otherwise stated, references to the “cross-section” of the aerosol-generating article or a component of the aerosol-generating article refer to the transverse cross-section, perpendicular to the longitudinal direction or axis.

During use of the aerosol-generating article, one or both of the first aerosol-generating substrate and the second aerosol-generating substrate may be combusted to form an aerosol.

Alternatively, during use of the aerosol-generating article, one or both of the first aerosolgenerating substrate and the second aerosol-generating substrate may be heated to form an aerosol, rather than combusted. For example, one or both of the first aerosol-generating substrate and the second aerosol-generating substrate may be heated during use by one or more electrical heating elements to produce an aerosol. In another example, one or both of the first aerosolgenerating substrate and the second aerosol-generating substrate may be heated by the transfer of heat from a combustible heat source to produce an aerosol. The first aerosol-generating substrate may comprise one or more botanical components. The first aerosol-generating substrate may comprise a plurality of botanical components. The second aerosol-generating substrate may comprise one or more botanical components. The second aerosol-generating substrate may comprise a plurality of botanical components.

The first aerosol-generating substrate and the second aerosol-generating substrate may each comprise different botanical components. The first aerosol-generating substrate and the second aerosol-generating substrate may each comprise the same botanical components.

The one or more botanical components may be selected from one or more of chrysanthemum, cardamom, star anise, red clover flower, chamomile, passionflower, lavender, rose petals, elderflower, jasmine, bay leaf, kaffir lime, orange leaves, lemon verbena, coriander, thyme, cumin, rosemary, allspice, sage, nutmeg, ginseng, clove, corn silk, garlic, garlic powder, basil, shallot, lotus leaf, curry powder, betel leaves, cayenne paper, tea leaves, palm sugar, ginger, galangal, turmeric, pangium edule, cinnamon, black paper, kaempferia galanga, pepper, jalapeno, onion, lemon grass, celery, vanilla, chives, tamarind, suji leaves, dried chili, chili powder, Mace, talas beneng, fennel, oregano, mint leaves, parsley, nipah leaves, benzoin, candlenut, and rheum officinale.

The one or more botanical components may be selected from one or more of clove, star anise, rosemary, cardamom, cinnamon, kaffir lime, peppermint, sage, chamomile, lavender, eucalyptus, ginger, dill, thyme, oregano and cumin.

The one or more botanical components may be selected from one or more of clove, star anise, rosemary, cardamom, cinnamon, peppermint, kaffir lime, peppermint, sage, chamomile and lavender.

The one or more botanical components may be selected from one or more of clove, star anise, rosemary, cardamom, cinnamon and kaffir lime.

The one or more botanical components may be selected from one or more of clove, star anise and rosemary.

The one or more botanical components may comprise clove.

As is known, cloves are effectively dried flower buds and stems of Syzygium aromaticum, a tree in the family Myrtaceae, and are commonly used as a spice. Accordingly, each clove comprises a calyx of sepals and a corolla of unopened petals, which form a ball-like portion attached to the calyx. As used herein, the term ‘clove’ encompasses particles derived from Syzygium aromaticum buds and stems and may include whole cloves, ground or crushed cloves, or cloves that have been otherwise physically processed to reduce the particle size.

The one or more botanical components may be formed into a homogenised botanical material by agglomerating particles of the one or more botanical components. The one or more botanical components may be formed into a sheet. A slurry may be formed comprising particles of the botanical components, optionally tobacco particles, water, a binder, and an aerosol former; casting or extruding the slurry in the form of a sheet or strands; and drying the sheets or strands at between 80 and 160 degrees Celsius. Where a sheet is formed, the sheet may be cut into strands or gathered to form a rod. The sheet may be crimped prior to the gathering step.

As used herein, the term ‘sheet’ denotes a laminar element having a width and length substantially greater than the thickness thereof.

The sheet of the one or more botanical components may be cut into strands, strips or shreds. Alternatively, the one or more botanical components may be cut into strands, strips or shreds directly from their natural physical form. The strands, strips or shreds of the one or more botanical components may have a width of greater than or equal to 0.2 millimetres, greater than or equal to 0.25 millimetres, or greater than or equal to 0.3 millimetres. The strands, strips or shreds of the one or more botanical components may have a width of less than or equal to 1 millimetre, less than or equal to 0.95 millimetres, or less than or equal to 0.9 millimetres. The strands, strips or shreds of the one or more botanical components may have a width of between 0.2 millimetres and 1 millimetre.

The first aerosol-generating substrate may comprise tobacco or a tobacco material. The second aerosol-generating substrate may comprise tobacco or a tobacco material.

The first aerosol-generating substrate may comprise the one or more botanical components and also may comprise tobacco or a tobacco material. The second aerosolgenerating substrate may comprise the one or more botanical components and also may comprise tobacco or a tobacco material.

The first aerosol-generating substrate may comprise the one or more botanical components and tobacco or a tobacco material. The second aerosol-generating substrate may comprise the one or more botanical components and tobacco or a tobacco material.

As used herein, the term “tobacco material” is used to describe any material comprising tobacco, including, but not limited to, tobacco leaf, tobacco rib, tobacco stem, tobacco stalk, tobacco dust, expanded tobacco, reconstituted tobacco material and homogenised tobacco material.

The first aerosol-generating substrate may comprise homogenised tobacco material. The second aerosol-generating substrate may comprise homogenised tobacco material.

As used herein, the term ‘homogenised tobacco material’ denotes a material formed by agglomerating particulate tobacco.

The tobacco or tobacco material may be prepared from one or more varieties of tobacco plants including, but not limited to, one or more of sun-cured tobacco, dark-cured tobacco, aircured tobacco, flue-cured tobacco, Burley tobacco, Maryland tobacco, Oriental tobacco, Virginia tobacco, and other speciality tobaccos. The first aerosol-generating substrate may comprise tobacco cut filler. The second aerosol-generating substrate may comprise tobacco cut filler.

As used herein, the term “tobacco cut filler” is used to describe an aerosol-generating substrate comprising a plurality of strands of tobacco lamina.

As used herein, the term “strand” describes an elongate element of material having a length that is substantially greater than the width and thickness thereof. The term “strand” should be considered to encompass strips, shreds and any other homogenised tobacco material having a similar form. The strands of homogenised tobacco material may be formed from a sheet of homogenised tobacco material, for example by cutting or shredding, or by other methods, for example, by an extrusion method.

The “cut length” of a strip of cut tobacco material for incorporation in cut fillers refers to the maximum dimension of the strip of the tobacco material resulting from the cutting operation, that is the maximum measurable distance between two points on the cut strip.

The ’’cut width” of a cut strip of tobacco material for incorporation in cut fillers refers to the maximum dimension of the strip of tobacco material resulting from the cutting operation measured in a direction substantially perpendicular to the longitudinal direction of the particle. Thus, the cut width of an individual cut strip is taken at the point along the length of the strip that yields the largest cross-sectional area.

The tobacco material may be shredded into strips having a cut width of greater than or equal to 0.2 millimetres, greater than or equal to 0.25 millimetres, or greater than or equal to 0.3 millimetres. The tobacco material may be shredded into strips having a cut width of less than or equal to 1 millimetre, less than or equal to 0.95 millimetres, or less than or equal to 0.9 millimetres. The tobacco material may be shredded into strips having a cut width of between 0.2 millimetres and 1 millimetre.

The first aerosol-generating substrate may comprise greater than or equal to 5 percent by weight of the one or more botanical components, greater than or equal to 10 percent by weight of the one or more botanical components, greater than or equal to 15 percent by weight of the one or more botanical components, greater than or equal to 20 percent by weight of the one or more botanical components, greater than or equal to 25 percent by weight of the one or more botanical components, or greater than or equal to 30 percent by weight of the one or more botanical components.

The first aerosol-generating substrate may comprise less than or equal to 50 percent by weight of the one or more botanical components, less than or equal to 45 percent by weight of the one or more botanical components, less than or equal to 40 percent by weight of the one or more botanical components, less than or equal to 35 percent by weight of the one or more botanical components, less than or equal to 30 percent by weight of the one or more botanical components, less than or equal to 25 percent by weight of the one or more botanical components, less than or equal to 20 percent by weight of the one or more botanical components, less than or equal to 15 percent by weight of the one or more botanical components, or less than or equal to 10 percent by weight of the one or more botanical components.

The first aerosol-generating substrate may comprise between 5 and 50 percent by weight of the one or more botanical components, between 5 and 45 percent by weight of the one or more botanical components, between 5 and 40 percent by weight of the one or more botanical components, between 5 and 35 percent by weight of the one or more botanical components, between 5 and 30 percent by weight of the one or more botanical components, between 5 and 25 percent by weight of the one or more botanical components, between 5 and 20 percent by weight of the one or more botanical components, between 5 and 15 percent by weight of the one or more botanical components, between 5 and 10 percent by weight of the one or more botanical components.

The first aerosol-generating substrate may comprise greater than or equal to 50 percent by weight of tobacco or a tobacco material, greater than or equal to 55 percent by weight of tobacco or a tobacco material, greater than or equal to 60 percent by weight of tobacco or a tobacco material, greater than or equal to 65 percent by weight of tobacco or a tobacco material, greater than or equal to 70 percent by weight of tobacco or a tobacco material, greater than or equal to 75 percent by weight of tobacco or a tobacco material, greater than or equal to 80 percent by weight of tobacco or a tobacco material greater than or equal to 85 percent by weight of tobacco or a tobacco material, greater than or equal to 90 percent by weight of tobacco or a tobacco material, or greater than or equal to 95 percent by weight of tobacco or a tobacco material.

The first aerosol-generating substrate may comprise less than or equal to 100 percent by weight of tobacco or a tobacco material, less than or equal to 95 percent by weight of tobacco or a tobacco material, less than or equal to 90 percent by weight of tobacco or a tobacco material, less than or equal to 85 percent by weight of tobacco or a tobacco material, less than or equal to 80 percent by weight of tobacco or a tobacco material, less than or equal to 75 percent by weight of tobacco or a tobacco material, or less than or equal to 70 percent by weight of tobacco or a tobacco material.

For example, the first aerosol-generating substrate may comprise between 60 percent by weight and 95 percent by weight of tobacco or a tobacco material.

A ratio of the mass of the tobacco or the tobacco material in the first aerosol-generating substrate to the mass of the one or more botanical components in the first aerosol-generating substrate may be greater than or equal to 1.2, greater than or equal to 1.5, or greater than or equal to 1.8. A ratio of the mass of the tobacco or the tobacco material in the first aerosol-generating substrate to the mass of the one or more botanical components in the first aerosol-generating substrate may be less than or equal to 2.5, less than or equal to 2.2, or less than or equal to 1 .9.

A ratio of the mass of the tobacco or the tobacco material in the first aerosol-generating substrate to the mass of the one or more botanical components in the first aerosol-generating substrate may be between 1.2 and 2.5, between 1.2 and 2.2, between 1.2 and 1.9, between 1.5 and 2.5, between 1.5 and 2.2, between 1.5 and 1.9, between 1.8 and 2.5, between 1.8 and 2.2, or between 1.8 and 1.9.

The first aerosol-generating substrate may comprise nicotine.

As used herein, the term “nicotine” is used to describe nicotine, a nicotine base or a nicotine salt. The aerosol-generating film may comprise natural nicotine or synthetic nicotine.

The first aerosol-generating substrate may comprise one or more aerosol formers. The first aerosol-generating substrate may comprise a plurality of aerosol formers.

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 facilitating that the aerosol is 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. The aerosol former may comprise one or more of glycerine and propylene glycol. The aerosol former may consist of glycerine or propylene glycol or of a combination of glycerine and propylene glycol.

The first aerosol-generating substrate may comprise one or more carboxylic acids. The first aerosol-generating substrate may comprise a plurality of carboxylic acids.

The first aerosol-generating substrate may comprise one or more aerosol formers and the first aerosol-generating substrate may comprise nicotine and the first aerosol-generating substrate may comprise one or more carboxylic acids particularly where the first aerosolgenerating substrate is configured to be heated to form an aerosol, rather than combusted.

The aerosol-generating article comprises a first aerosol-generating substrate.

A maximum diameter of the first aerosol-generating substrate may be greater than a maximum diameter of the second aerosol-generating substrate. In other words, the largest diameter of the first aerosol-generating substrate along the entire length of the first aerosolgenerating substrate may be greater than the largest diameter of the second aerosol-generating substrate along the entire length of the second aerosol-generating substrate.

The first aerosol-generating substrate may have a frustoconical shape. A maximum diameter of the first aerosol-generating substrate may be greater than or equal to 7 millimetres, greater than or equal to 7.5 millimetres, greater than or equal to 8 millimetres, greater than or equal to 8.5 millimetres, greater than or equal to 9 millimetres, or greater than or equal to 9.5 millimetres.

A maximum diameter of the first aerosol-generating substrate may be less than or equal to 12 millimetres, less than or equal to 11.5 millimetres, less than or equal to 11 millimetres, less than or equal to 10.5 millimetres, less than or equal to 10 millimetres, or less than or equal to 9.5 millimetres.

A maximum diameter of the first aerosol-generating substrate may be between 7 millimetres and 12 millimetres, between 7.5 millimetres and 12 millimetres, between 7.5 millimetres and 11.5 millimetres, between 8 millimetres and 11 millimetres, between 8.5 millimetres and 10.5 millimetres, between 9 millimetres and 10 millimetres, or about 9.5 millimetres.

The first aerosol-generating substrate may have a length which is defined as the overall length of the first aerosol-generating substrate from its downstream end to its upstream end along the longitudinal axis of the aerosol-generating article.

The length of the first aerosol-generating substrate may be greater than the length of the second aerosol-generating substrate.

The first aerosol-generating substrate may have a length of greater than or equal to 20 millimetres, greater than or equal to 30 millimetres, greater than or equal to 40 millimetres, greater than or equal to 45 millimetres, greater than or equal to 50 millimetres, or greater than or equal to 60 millimetres.

The first aerosol-generating substrate may have a length of less than or equal to 70 millimetres, less than or equal to 60 millimetres, or less than or equal to 50 millimetres.

The first aerosol-generating substrate may have a length of between 20 millimetres and

70 millimetres, between 20 millimetres and 60 millimetres, between 20 millimetres and 50 millimetres, between 30 millimetres and 70 millimetres, between 30 millimetres and 60 millimetres, between 30 millimetres and 60 millimetres, between 40 millimetres and 70 millimetres, between 40 millimetres and 60 millimetres, between 40 millimetres and 50 millimetres, between 45 millimetres and 70 millimetres, between 45 millimetres and 60 millimetres, between 45 millimetres and 50 millimetres, between 50 millimetres and 70 millimetres, between 50 millimetres and 60 millimetres, or between 60 millimetres and 70 millimetres.

The first aerosol-generating substrate may have a length of greater than or equal to 5 millimetres. The first aerosol-generating substrate may have a length of less than or equal to 10 millimetres. The first aerosol-generating substrate may have a length of between 5 millimetres and 10 millimetres. The first aerosol-generating substrate may have a mass of greater than or equal to 1000 milligrams, greater than or equal to 1200 milligrams, or greater than or equal to 1400 milligrams.

The first aerosol-generating substrate may have a mass of less than or equal to 2000 milligrams, less than or equal to 1800 milligrams, or less than or equal to 1600 milligrams.

The first aerosol-generating substrate may have a mass of between 1000 milligrams and

2000 milligrams, between 1200 milligrams and 2000 milligrams, between 1400 milligrams and

2000 milligrams, between 1000 milligrams and 1800 milligrams, between 1200 milligrams and

1800 milligrams, between 1400 milligrams and 1800 milligrams, between 1000 milligrams and

1600 milligrams, between 1200 milligrams and 1600 milligrams, or between 1400 milligrams and 1600 milligrams.

A density of the first aerosol-generating substrate may be less than or equal to 500 kilograms per cubic metre, less than or equal to 450 kilograms per cubic metre, or less than or equal to 400 kilograms per cubic metre.

A density of the first aerosol-generating substrate may be greater than or equal to 300 kilograms per cubic metre, greater than or equal to 340 kilograms per cubic metre, greater than or equal to 380 kilograms per cubic metre.

A density of the first aerosol-generating substrate may be between 300 kilograms per cubic metre and 500 kilograms per cubic metre, between 300 kilograms per cubic metre and 450 kilograms per cubic metre, between 300 kilograms per cubic metre and 400 kilograms per cubic metre, between 340 kilograms per cubic metre and 500 kilograms per cubic metre, between 340 kilograms per cubic metre and 450 kilograms per cubic metre, between 340 kilograms per cubic metre and 400 kilograms per cubic metre, between 380 kilograms per cubic metre and 500 kilograms per cubic metre, between 380 kilograms per cubic metre and 450 kilograms per cubic metre, or between 380 kilograms per cubic metre and 400 kilograms per cubic metre.

The term “density” as used herein in relation to the first aerosol-generating substrate refers to the bulk density of the first aerosol-generating substrate. This can be calculated by measuring the total mass of the first aerosol-generating substrate and dividing this by the volume of the first aerosol-generating substrate (excluding any wrapper).

The second aerosol-generating substrate may not comprise the one or more botanical components.

The second aerosol-generating substrate may comprise greater than or equal to 1 percent by weight of the one or more botanical components, greater than or equal to 5 percent by weight of the one or more botanical components, greater than or equal to 10 percent by weight of the one or more botanical components, or greater than or equal to 15 percent by weight of the one or more botanical components.

The second aerosol-generating substrate may comprise less than or equal to 20 percent by weight of the one or more botanical components, less than or equal to 15 percent by weight of the one or more botanical components, less than or equal to 10 percent by weight of the one or more botanical components, or less than or equal to 5 percent by weight of the one or more botanical components.

The second aerosol-generating substrate may comprise between 1 and 20 percent by weight of the one or more botanical components, between 1 and 15 percent by weight of the one or more botanical components, between 1 and 10 percent by weight of the one or more botanical components, or between 1 and 5 percent by weight of the one or more botanical components.

The second aerosol-generating substrate may comprise greater than or equal to 60 percent by weight of tobacco or a tobacco material, greater than or equal to 65 percent by weight of tobacco or a tobacco material, greater than or equal to 70 percent by weight of tobacco or a tobacco material, greater than or equal to 75 percent by weight of tobacco or a tobacco material, greater than or equal to 80 percent by weight of tobacco or a tobacco material, greater than or equal to 85 percent by weight of tobacco or a tobacco material, greater than or equal to 90 percent by weight of tobacco or a tobacco material, greater than or equal to 95 percent by weight of tobacco or a tobacco material, or greater than or equal to 100 percent by weight of tobacco or a tobacco material.

The second aerosol-generating substrate may comprise less than or equal to 100 percent by weight of tobacco or a tobacco material, less than or equal to 97 percent by weight of tobacco or a tobacco material, less than or equal to 95 percent by weight of tobacco or a tobacco material, less than or equal to 90 percent by weight of tobacco or a tobacco material less than or equal to 85 percent by weight of tobacco or a tobacco material, or less than or equal to 80 percent by weight of tobacco or a tobacco material.

For example, the second aerosol-generating substrate may comprise between 85 percent by weight and 100 percent by weight of tobacco or a tobacco material.

A ratio of the mass of the tobacco or the tobacco material in the second aerosol-generating substrate to the mass of the one or more botanical components in the second aerosol-generating substrate may be greater than or equal to 3, greater than or equal to 4, or greater than or equal to 5.

A ratio of the mass of the tobacco or the tobacco material in the second aerosol-generating substrate to the mass of the one or more botanical components in the second aerosol-generating substrate may be less than or equal to 8, less than or equal to 7, or less than or equal to 6.

A ratio of the mass of the tobacco or the tobacco material in the second aerosol-generating substrate to the mass of the one or more botanical components in the second aerosol-generating substrate may be between 3 and 8, between 3 and 7, between 3 and 6, between 4 and 8, between 4 and 7, between 4 and 6, between 5 and 8, between 5 and 7, or between 5 and 6.

A ratio of the mass of the tobacco or the tobacco material in the second aerosol-generating substrate to the mass of the one or more botanical components in the second aerosol-generating substrate may be greater than a ratio of the mass of the tobacco or the tobacco material in the first aerosol-generating substrate to the mass of the one or more botanical components in the first aerosol-generating substrate.

A ratio of the mass of the tobacco or the tobacco material in the second aerosol-generating substrate to the mass of the one or more botanical components in the second aerosol-generating substrate may be less than a ratio of the mass of the tobacco or the tobacco material in the first aerosol-generating substrate to the mass of the one or more botanical components in the first aerosol-generating substrate.

The second aerosol-generating substrate may comprise nicotine.

The second aerosol-generating substrate may comprise one or more aerosol formers. The second aerosol-generating substrate may comprise a plurality of aerosol formers.

The second aerosol-generating substrate may comprise one or more carboxylic acids. The second aerosol-generating substrate may comprise a plurality of carboxylic acids.

The second aerosol-generating substrate may comprise one or more aerosol formers and the second aerosol-generating substrate may comprise nicotine and the second aerosolgenerating substrate may comprise one or more carboxylic acids particularly where the second aerosol-generating substrate is configured to be heated to form an aerosol, rather than combusted.

The aerosol-generating article comprises a second aerosol-generating substrate.

The second aerosol-generating substrate may have a frustoconical shape.

A maximum diameter of the second aerosol-generating substrate may be greater than or equal to 7 millimetres, greater than or equal to 7.5 millimetres, greater than or equal to 8 millimetres, or greater than or equal to 8.5 millimetres.

A maximum diameter of the second aerosol-generating substrate may be less than or equal to 9.5 millimetres, less than or equal to 9 millimetres, or less than or equal to 8.5 millimetres. A maximum diameter of the second aerosol-generating substrate may be between 7 millimetres and 10 millimetres, between 7.5 millimetres and 9.5 millimetres, between 8 millimetres and 9 millimetres, or about 8.5 millimetres.

The second aerosol-generating substrate may have a length which is defined as the overall length of the second aerosol-generating substrate from its downstream end to its upstream end along the longitudinal axis of the aerosol-generating article.

The second aerosol-generating substrate may have a length of greater than or equal to 15 millimetres, greater than or equal to 20 millimetres, or greater than or equal to 25 millimetres.

The second aerosol-generating substrate may have a length of less than or equal to 30 millimetres, less than or equal to 25 millimetres, or less than or equal to 20 millimetres.

The second aerosol-generating substrate may have a length of between 15 millimetres and 30 millimetres, between 15 millimetres and 25 millimetres, between 15 millimetres and 20 millimetres, between 20 millimetres and 30 millimetres, between 20 millimetres and 25 millimetres, or between 25 millimetres and 30 millimetres.

The second aerosol-generating substrate may have a length of greater than or equal to 2 millimetres. The second aerosol-generating substrate may have a length of less than or equal to 7 millimetres. The second aerosol-generating substrate may have a length of between 2 millimetres and 7 millimetres.

The second aerosol-generating substrate may have a mass of greater than or equal to 200 milligrams, greater than or equal to 300 milligrams, or greater than or equal to 400 milligrams.

The second aerosol-generating substrate may have a mass of less than or equal to 700 milligrams, less than or equal to 600 milligrams, or less than or equal to 500 milligrams.

The second aerosol-generating substrate may have a mass of between 200 milligrams and 700 milligrams, between 200 milligrams and 600 milligrams, between 200 milligrams and 500 milligrams, between 300 milligrams and 700 milligrams, between 300 milligrams and 600 milligrams, between 300 milligrams and 500 milligrams, between 400 milligrams and 700 milligrams, between 400 milligrams and 600 milligrams, or between 400 milligrams and 500 milligrams.

A density of the second aerosol-generating substrate may be less than or equal to 500 kilograms per cubic metre, less than or equal to 450 kilograms per cubic metre, or less than or equal to 400 kilograms per cubic metre.

A density of the second aerosol-generating substrate may be greater than or equal to 300 kilograms per cubic metre, greater than or equal to 330 kilograms per cubic metre, or greater than or equal to 360 kilograms per cubic metre.

A density of the second aerosol-generating substrate may be between 300 kilograms per cubic metre and 500 kilograms per cubic metre, between 300 kilograms per cubic metre and 450 kilograms per cubic metre, between 300 kilograms per cubic metre and 400 kilograms per cubic metre, between 330 kilograms per cubic metre and 500 kilograms per cubic metre, between 330 kilograms per cubic metre and 450 kilograms per cubic metre, between 330 kilograms per cubic metre and 400 kilograms per cubic metre, between 360 kilograms per cubic metre and 500 kilograms per cubic metre, between 360 kilograms per cubic metre and 450 kilograms per cubic metre, or between 360 kilograms per cubic metre and 400 kilograms per cubic metre.

The term “density” as used herein in relation to the second aerosol-generating substrate refers to the bulk density of the second aerosol-generating substrate. This can be calculated by measuring the total mass of the second aerosol-generating substrate and dividing this by the volume of the second aerosol-generating substrate (excluding any wrapper).

A ratio of a mass of the first aerosol-generating substrate to a mass of the second aerosolgenerating substrate may be greater than or equal to 2, greater than or equal to 2.5, or greater than or equal to 3.

A ratio of a mass of the first aerosol-generating substrate to a mass of the second aerosolgenerating substrate may be less than or equal to 4.5, less than or equal to 4, or less than or equal to 3.5.

A total mass of the first aerosol-generating substrate and the second aerosol-generating substrate may be greater than or equal to 1400 milligrams, greater than or equal to 1600 milligrams, or greater than or equal to 1800 milligrams.

A total mass of the first aerosol-generating substrate and the second aerosol-generating substrate may be less than or equal to 2400 milligrams, less than or equal to 2200 milligrams, or less than or equal to 2000 milligrams.

A total mass of the first aerosol-generating substrate and the second aerosol-generating substrate may be between 1400 milligrams and 2400 milligrams, between 1600 milligrams and 2200 milligrams, or between 1800 milligrams and 2000 milligrams.

A ratio of the mass of the one or more botanical component in the first aerosol-generating substrate to the mass of the one or more botanical component in the second aerosol-generating substrate may be greater than or equal to 5, greater than or equal to 6, or greater than or equal to 7.

A ratio of the mass of the one or more botanical component in the first aerosol-generating substrate to the mass of the one or more botanical component in the second aerosol-generating substrate may be less than or equal to 9.5, less than or equal to 8.5, or less than or equal to 7.5.

A ratio of the length of the first aerosol-generating substrate to the length of the second aerosol-generating substrate may be greater than or equal to 1.5, greater than or equal to 2, or greater than or equal to 2.5.

A ratio of the length of the first aerosol-generating substrate to the length of the second aerosol-generating substrate may be less than or equal to 3, less than or equal to 2.5, or less than or equal to 2. A ratio of the length of the first aerosol-generating substrate to the length of the second aerosol-generating substrate may be between 1.5 and 3, between 1.5 and 2.5, between 1.5 and 2, between 2 and 3, between 2 and 2.5, or between 2.5 and 3.

The first aerosol-generating substrate and the second aerosol-generating substrate may have a total combined length of between 60 millimetres and 100 millimetres, between 60 millimetres and 90 millimetres, between 60 millimetres and 80 millimetres, between 60 millimetres and 70 millimetres, between 70 millimetres and 100 millimetres, between 70 millimetres and 90 millimetres, between 70 millimetres and 80 millimetres, between 80 millimetres and 100 millimetres, between 80 millimetres and 90 millimetres, or between 90 millimetres and 100 millimetres.

The first aerosol-generating substrate and the second aerosol-generating substrate may have a total combined length of between 8 millimetres and 16 millimetres.

A ratio of the mass of tobacco or tobacco material in the first aerosol-generating substrate to the mass of tobacco or tobacco material in the second aerosol-generating substrate may be greater than or equal to 1.6, greater than or equal to 2, or greater than or equal to 2.4.

A ratio of the mass of tobacco or tobacco material in the first aerosol-generating substrate to the mass of tobacco or tobacco material in the second aerosol-generating substrate may be less than or equal to 3.4, less than or equal to 3, or less than or equal to 2.6.

The aerosol-generating article may have a total length which is defined as the overall length of the aerosol-generating article from its downstream end to its upstream end along the longitudinal axis of the aerosol-generating article.

The aerosol-generating article may have a total length of greater than or equal to 60 millimetres, greater than or equal to 70 millimetres, or greater than or equal to 80 millimetres.

The aerosol-generating article may have a total length of less than or equal to 100 millimetres, less than or equal to 90 millimetres, less than or equal to 80 millimetres, or less than or equal to 70 millimetres.

The aerosol-generating article may have a total length between 60 millimetres and 100 millimetres, between 60 millimetres and 90 millimetres, between 60 millimetres and 80 millimetres, between 60 millimetres and 70 millimetres, between 70 millimetres and 100 millimetres, between 70 millimetres and 90 millimetres, between 70 millimetres and 80 millimetres, between 80 millimetres and 100 millimetres, between 80 millimetres and 90 millimetres, or between 90 millimetres and 100 millimetres.

The aerosol-generating article may have a total length of greater than or equal to 30 millimetres, greater than or equal to 35 millimetres, greater than or equal to 40 millimetres, or greater than or equal to 45 millimetres. The aerosol-generating article may have a total length of less than or equal to 80 millimetres, less than or equal to 70 millimetres, less than or equal to 60 millimetres, or less than or equal to 50 millimetres.

The aerosol-generating article may have a total length of between 30 millimetres and 80 millimetres, between 35 millimetres and 70 millimetres, between 40 millimetres and 60 millimetres, between 45 millimetres and 60 millimetres, between 40 millimetres and 50 millimetres, between 45 millimetres and 50 millimetres, or about 45 millimetres.

The aerosol-generating article may have a cross-sectional shape which is substantially circular.

The aerosol-generating article may have a substantially constant diameter along the entire length of the aerosol-generating article. A cross-sectional shape of the article may be approximately constant over the length of the aerosol-generating article. For example, the aerosol-generating article may have a substantially cylindrical shape along the length of the aerosol-generating article.

The aerosol-generating article may have a varying diameter along the length of the aerosol-generating article. The diameter of the aerosol-generating article may increase along the length of the article. Preferably, the diameter of the aerosol-generating article at an upstream end of the aerosol-generating article is greater than a diameter of the aerosol-generating article at a downstream end of the aerosol-generating article.

The aerosol-generating article may have a frustoconical shape. In other words, the aerosol-generating article may have the shape of a frustum of a cone.

Advantageously, providing an aerosol-generating article having a diameter of the aerosolgenerating article at an upstream end of the aerosol-generating article which is greater than a diameter of the aerosol-generating article at a downstream end of the aerosol-generating article, such as an aerosol-generating article having a frustoconical shape, may allow a larger amount of aerosol-generating substrate to be stored at the upstream end of the aerosol-generating article without affecting the mouth-end diameter. This may result in an increased amount of aerosolgenerating substrate stored in the aerosol-generating article while maintaining a comfortable mouth-end diameter for the user.

The diameter of the aerosol-generating article at the upstream end of the aerosolgenerating article may be greater than or equal to 7 millimetres, greater than or equal to 7.5 millimetres, greater than or equal to 8 millimetres, greater than or equal to 8.5 millimetres, greater than or equal to 9 millimetres, greater than or equal to 9.5 millimetres, greater than or equal to 10 millimetres, greater than or equal to 10.5 millimetres, greater than or equal to 11 millimetres, or greater than or equal to 11.5 millimetres.

The diameter of the aerosol-generating article at the upstream end of the aerosolgenerating article may be less than or equal to 12 millimetres, less than or equal to 11.5 millimetres, less than or equal to 11 millimetres, less than or equal to 10.5 millimetres, less than or equal to 10 millimetres, less than or equal to 9.5 millimetres, less than or equal to 9 millimetres, less than or equal to 8.5 millimetres, or less than or equal to 8 millimetres.

The diameter of the aerosol-generating article at the upstream end of the aerosolgenerating article may be between 7 millimetres and 12 millimetres, between 7.5 millimetres and 12 millimetres, between 7.5 millimetres and 11.5 millimetres, between 8 millimetres and 11 millimetres, between 8.5 millimetres and 10.5 millimetres, between 9 millimetres and 10 millimetres, or about 9.5 millimetres.

The diameter of the aerosol-generating article at the downstream end of the aerosolgenerating article may be greater than or equal to 7 millimetres, greater than or equal to 7.5 millimetres, greater than or equal to 8 millimetres or greater than or equal to 8.5 millimetres.

The diameter of the aerosol-generating article at the downstream end of the aerosolgenerating article may be less than or equal to 9 millimetres, less than or equal to 8.5 millimetres, or less than or equal to 8 millimetres.

The diameter of the aerosol-generating article at the downstream end of the aerosolgenerating article may be between 7 millimetres and 9 millimetres, between 7.5 millimetres and 8.5 millimetres, or about 8 millimetres.

A difference between the diameter of the aerosol-generating article at the upstream end of the aerosol-generating article and the diameter of the aerosol-generating article at the downstream end of the aerosol-generating article may be greater than or equal to 0.5 millimetres, greater than or equal to 1 millimetre, or greater than or equal to 1.5 millimetres.

A difference between the diameter of the aerosol-generating article at the upstream end of the aerosol-generating article and the diameter of the aerosol-generating article at the downstream end of the aerosol-generating article may be less than or equal to 3 millimetres, less than or equal to 2.5 millimetres, or less than or equal to 2 millimetres.

A difference between the diameter of the aerosol-generating article at the upstream end of the aerosol-generating article and the diameter of the aerosol-generating article at the downstream end of the aerosol-generating article may be between 0.5 millimetres and 3 millimetres, between 0.5 millimetres and 2.5 millimetres, between 1 millimetre and 2 millimetres, or about 1 .5 millimetres.

A ratio of the diameter of the aerosol-generating article at the upstream end of the aerosolgenerating article to the diameter of the aerosol-generating article at the downstream end of the aerosol-generating article may be greater than or equal to 1.05, greater than or equal to 1.1 , greater than or equal to 1.15 or greater than or equal to 1.2.

A ratio of the diameter of the aerosol-generating article at the upstream end of the aerosolgenerating article to the diameter of the aerosol-generating article at the downstream end of the aerosol-generating article may be less than or equal to 1.75, less than or equal to 1.6, less than or equal to 1 .45, or less than or equal to 1 .3.

A ratio of the diameter of the aerosol-generating article at the upstream end of the aerosolgenerating article to the diameter of the aerosol-generating article at the downstream end of the aerosol-generating article may be between 1.05 and 1.75, between 1.1 and 1.6, between 1.15 and 1 .45, or between 1.2 and 1 .3.

The second aerosol-generating substrate is downstream of the first aerosol-generating substrate.

The first aerosol-generating substrate may be located at an upstream end of the aerosolgenerating article.

The second aerosol-generating substrate may be located at a downstream end of the aerosol-generating article. In other words, the aerosol-generating article may not comprise any components which are downstream of the second aerosol-generating substrate. The aerosolgenerating article may not comprise a mouthpiece element.

The second aerosol-generating substrate may be immediately downstream of the first aerosol-generating substrate. In other words, the upstream end of the second aerosol-generating substrate may abut a downstream end of the first aerosol-generating substrate.

An upstream end of the second aerosol-generating substrate may be spaced apart from a downstream end of the first aerosol-generating substrate. A spacer element may be positioned between the first aerosol-generating substrate and the second aerosol-generating substrate. The spacer element may comprise one or more hollow tubular elements.

The aerosol-generating article comprises a wrapper. The wrapper may circumscribe at least one of the first aerosol-generating substrate and the second aerosol-generating substrate. Preferably, the wrapper circumscribes at least part of the first aerosol-generating substrate and at least part of the second aerosol-generating substrate.

The wrapper may extend along only a part of the length of the aerosol-generating article. The wrapper may extend along the entire length of the aerosol-generating article.

The wrapper may circumscribe the first aerosol-generating substrate and the second aerosol-generating substrate. That is, the wrapper may circumscribe the first aerosol-generating substrate along its entire length and the wrapper may circumscribe the second aerosol-generating substrate along its entire length.

The wrapper may comprise one or more of cardboard, plastics, and metal foil. The wrapper may comprise a cellulosic material. The wrapper may comprise cellulosic material selected from one or more of paper, wood, textile, natural fibres, and artificial fibres. The wrapper may comprise cigarette paper. The wrapper may comprise tipping paper. The wrapper may extend to the downstream end of the aerosol-generating article. The wrapper may comprise a sweetener. The sweetener may be located on an outer surface of the wrapper. The sweetener may be located at a downstream end of the wrapper.

The first aerosol-generating substrate may be in the shape of a rod. The second aerosolgenerating substrate may be in the shape of a rod.

The aerosol-generating article may comprise a downstream section located downstream of the first aerosol-generating substrate and the second aerosol-generating substrate. The downstream section may comprise one or more hollow tubular elements.

The one or more hollow tubular elements may comprise a hollow tubular cooling element. An upstream end of the hollow tubular cooling element may abut a downstream end of the second aerosol-generating substrate. The hollow tubular cooling element may be a cardboard tube. The hollow tubular cooling element may comprise a polymeric material. Preferably, the hollow tubular cooling element comprises a hollow acetate tube.

The one or more hollow tubular elements may comprise a hollow tubular support element. The one or more hollow tubular elements may comprise a hollow tubular support element upstream of the hollow tubular cooling element. An upstream end of the hollow tubular cooling element may abut a downstream end of the hollow tubular support element. The hollow tubular support element may be formed from one or more materials selected from the group consisting of: cellulose acetate; cardboard; crimped paper, such as crimped heat resistant paper or crimped parchment paper; and polymeric materials, such as low density polyethylene (LDPE). Preferably, the hollow tubular support element comprises a hollow acetate tube.

The downstream section may comprise a PLA (poly lactic acid) plug. The PLA plug may comprise crimped PLA. The PLA plug may be downstream of the one or more hollow tubular elements. The hollow tubular support element may be upstream of the PLA plug.

The aerosol-generating article may comprise a susceptor element arranged within one or both of the first aerosol-generating substrate and the second aerosol-generating substrate.

As used herein, the term “susceptor” denotes a material that is capable of being heated when penetrated by a varying magnetic field. The susceptor element may be formed from any material that can be inductively heated to a temperature sufficient to generate an aerosol from the aerosol-generating substrate. For example, the susceptor element may comprise a metal or carbon.

The aerosol-generating article may comprise one or more upstream elements located upstream of the first aerosol-generating substrate and the second aerosol-generating substrate. The one or more upstream elements may comprise a solid cylindrical plug element having a filled cross-section. The one or more upstream elements may extend between the upstream end of the aerosol-generating article and the second aerosol-generating substrate. The aerosol-generating article may comprise a mouthpiece element. The downstream section may comprise a mouthpiece element.

The mouthpiece element may be located downstream of at least one of the one or more hollow tubular elements. The mouthpiece element may be located downstream of the one or more hollow tubular elements. The mouthpiece element may extend between one of the one or more hollow tubular elements and the downstream end of the aerosol-generating article. The mouthpiece element may extend between the PLA (poly lactic acid) plug and the downstream end of the aerosol-generating article. The mouthpiece element may extend to a downstream end of the downstream section.

The mouthpiece element may be located at a downstream end of the aerosol-generating article. The downstream end of the mouthpiece element may define the downstream end of the aerosol-generating article. The mouthpiece element is preferably a solid plug and is non-tubular. The mouthpiece element may have a substantially uniform cross section. The mouthpiece element may be a mouth-end filter. The mouthpiece element may be formed of a fibrous filtration material. Preferably, the mouthpiece element is formed of cellulose acetate.

The aerosol-generating article may not comprise a mouthpiece element. The aerosolgenerating article may not comprise a downstream section located downstream of the first aerosol-generating substrate and the second aerosol-generating substrate. In other words, the second aerosol-generating substrate may define a downstream end of the aerosol-generating article. Advantageously, providing an aerosol-generating article which does not comprise a mouthpiece element may reduce waste following use of the aerosol-generating article.

In examples where one or both of the first aerosol-generating substrate and the second aerosol-generating substrate are configured to be heated to form an aerosol, rather than combusted, an aerosol-generating system may be provided. The aerosol-generating system may comprise any of the aerosol-generating articles disclosed herein and an aerosol-generating device.

The aerosol-generating device may comprise a heating element, or part of a heating element, for heating the aerosol-generating article.

As used herein, the term “aerosol-generating device” denotes a device that interacts with one or both of the first aerosol-generating substrate and the second aerosol-generating substrate to generate an aerosol. In some examples, the aerosol-generating device heats one or both of the first aerosol-generating substrate and the second aerosol-generating substrate to facilitate release of volatile compounds from the substrates.

As used herein, the term “aerosol-generating system” refers to the combination of an aerosol-generating device and an aerosol-generating article.

The aerosol-generating device may comprise a device cavity configured to receive at least a part of the aerosol-generating article. The aerosol-generating device may comprise a heating element.

The heating element may comprise a resistive heating element. The heating element may comprise an electrically resistive material.

The heating element may comprise a susceptor element.

Where a susceptor element is provided, the aerosol-generating device may comprise an inductor coil arranged to inductively heat the susceptor element. Where the aerosol-generating device comprises a device cavity, the inductor coil may at least partly circumscribe the device cavity.

The aerosol-generating device may comprise a controller for controlling the heating element. The aerosol-generating device may comprise a power supply for supplying power to the heating element.

Below, there is provided a non-exhaustive list of non-limiting examples. Any one or more of the features of these examples may be combined with any one or more features of another example, embodiment, or aspect described herein.

Example Ex1 : An aerosol-generating article, the aerosol-generating article comprising: a first aerosol-generating substrate; a second aerosol-generating substrate, the second aerosol-generating substrate being downstream of the first aerosol-generating substrate; a wrapper circumscribing at least one of the first aerosol-generating substrate and the second aerosol-generating substrate; wherein one or both of the first aerosol-generating substrate and the second aerosolgenerating substrate comprises greater than or equal to 5 percent by weight of one or more botanical components; wherein the composition of the first aerosol-generating substrate and the composition of the second aerosol-generating substrate are different, and wherein one or both of the first aerosol-generating substrate and the second aerosolgenerating substrate comprises tobacco or a tobacco material.

Example Ex2: An aerosol-generating article according to example Ex1 , wherein the first aerosol-generating substrate comprises greater than or equal to 5 percent by weight of one or more botanical components.

Example Ex3: An aerosol-generating article according to example Ex1 or Ex2, wherein the first aerosol-generating substrate comprises greater than or equal to 10 percent by weight of one or more botanical components.

Example Ex4: An aerosol-generating article according to any one of example Ex1 to Ex3, wherein the first aerosol-generating substrate comprises less than or equal to 50 percent by weight of one or more botanical components. Example Ex5: An aerosol-generating article according to any preceding example, wherein the first aerosol-generating substrate comprises less than or equal to 40 percent by weight of one or more botanical components.

Example Ex6: An aerosol-generating article according to any preceding example, wherein the second aerosol-generating substrate comprises greater than or equal to 1 percent by weight of one or more botanical components.

Example Ex7: An aerosol-generating article according to any preceding example, wherein the second aerosol-generating substrate comprises greater than or equal to 5 percent by weight of one or more botanical components.

Example Ex8: An aerosol-generating article according to any preceding example, wherein the second aerosol-generating substrate comprises less than or equal to 20 percent by weight of one or more botanical components.

Example Ex9: An aerosol-generating article according to any preceding example, wherein the second aerosol-generating substrate comprises less than or equal to 15 percent by weight of one or more botanical components.

Example Ex10: An aerosol-generating article according to any preceding example, wherein the first aerosol-generating substrate comprises greater than or equal to 50 percent by weight of tobacco or a tobacco material.

Example Ex11 : An aerosol-generating article according to any preceding example, wherein the first aerosol-generating substrate comprises greater than or equal to 60 percent by weight of tobacco or a tobacco material.

Example Ex12: An aerosol-generating article according to any preceding example, wherein the first aerosol-generating substrate comprises less than or equal to 100 percent by weight of tobacco or a tobacco material.

Example Ex13: An aerosol-generating article according to any preceding example, wherein the first aerosol-generating substrate comprises less than or equal to 95 percent by weight of tobacco or a tobacco material.

Example Ex14: An aerosol-generating article according to any preceding example, wherein one or both of the first aerosol-generating substrate and the second aerosol-generating substrate comprise tobacco cut filler.

Example Ex15: An aerosol-generating article according to any preceding example, wherein the second aerosol-generating substrate comprises greater than or equal to 60 percent by weight of tobacco or a tobacco material.

Example Ex16: An aerosol-generating article according to any preceding example, wherein the second aerosol-generating substrate comprises greater than or equal to 65 percent by weight of tobacco or a tobacco material. Example Ex17: An aerosol-generating article according to any preceding example, wherein the second aerosol-generating substrate comprises less than or equal to 100 percent by weight of tobacco or a tobacco material.

Example Ex18: An aerosol-generating article according to any preceding example, wherein the second aerosol-generating substrate comprises less than or equal to 97 percent by weight of tobacco or a tobacco material.

Example Ex19: An aerosol-generating article according to any preceding example, wherein the first aerosol-generating substrate has a mass of between 1000 milligrams and 2000 milligrams.

Example Ex20: An aerosol-generating article according to any preceding example, wherein the second aerosol-generating substrate has a mass of between 300 milligrams and 700 milligrams.

Example Ex21 : An aerosol-generating article according to any preceding example, wherein a ratio of a mass of the first aerosol-generating substrate to a mass of the second aerosolgenerating substrate is greater than or equal to 2.

Example Ex22: An aerosol-generating article according to any preceding example, wherein a ratio of a mass of the first aerosol-generating substrate to a mass of the second aerosolgenerating substrate is less than or equal to 4.

Example Ex23: An aerosol-generating article according to any preceding example, wherein a total mass of the first aerosol-generating substrate and the second aerosol-generating substrate is between 1400 milligrams and 2400 milligrams.

Example Ex24: An aerosol-generating article according to any preceding example, wherein the diameter of the aerosol-generating article at an upstream end of the aerosolgenerating article is greater than a diameter of the aerosol-generating article at a downstream end of the aerosol-generating article.

Example Ex25: An aerosol-generating article according to any preceding example, wherein the diameter of the aerosol-generating article at the upstream end of the aerosolgenerating article is greater than or equal to 7.5 millimetres.

Example Ex26: An aerosol-generating article according to any preceding example, wherein the diameter of the aerosol-generating article at the upstream end of the aerosolgenerating article is less than or equal to 12 millimetres.

Example Ex27: An aerosol-generating article according to any preceding example, wherein the diameter of the aerosol-generating article at the downstream end of the aerosolgenerating article is greater than or equal to 7 millimetres.

Example Ex28: An aerosol-generating article according to any preceding example, wherein the diameter of the aerosol-generating article at the downstream end of the aerosolgenerating article is less than or equal to 9 millimetres. Example Ex29: An aerosol-generating article according to any preceding example, wherein a difference between the diameter of the aerosol-generating article at the upstream end of the aerosol-generating article and the diameter of the aerosol-generating article at the downstream end of the aerosol-generating article is greater than or equal to 0.5 millimetres.

Example Ex30: An aerosol-generating article according to any preceding example, wherein a difference between the diameter of the aerosol-generating article at the upstream end of the aerosol-generating article and the diameter of the aerosol-generating article at the downstream end of the aerosol-generating article is less than or equal to 3 millimetres.

Example Ex31 : An aerosol-generating article according to any preceding example, wherein the ratio of the diameter of the aerosol-generating article at the upstream end of the aerosol-generating article to the diameter of the aerosol-generating article at the downstream end of the aerosol-generating article is greater than or equal to 1.05.

Example Ex32: An aerosol-generating article according to any preceding example, wherein the ratio of the diameter of the aerosol-generating article at the upstream end of the aerosol-generating article to the diameter of the aerosol-generating article at the downstream end of the aerosol-generating article is less than or equal to 1.75.

Example Ex33: An aerosol-generating article according to any preceding example, wherein the aerosol-generating article has a frustoconical shape.

Example Ex34: An aerosol-generating article according to any preceding example, wherein one or both of the first aerosol-generating substrate and the second aerosol-generating substrate have a frustoconical shape.

Example Ex35: An aerosol-generating article according to any preceding example, wherein a maximum diameter of the first aerosol-generating substrate is greater than a maximum diameter of the second aerosol-generating substrate.

Example Ex36: An aerosol-generating article according to any preceding example, wherein a length of the first aerosol-generating substrate is greater than a length of the second aerosol-generating substrate.

Example Ex37: An aerosol-generating article according to any preceding example, wherein the first aerosol-generating substrate has a length of greater than or equal to 45 millimetres.

Example Ex38: An aerosol-generating article according to any preceding example, wherein the first aerosol-generating substrate has a length of less than or equal to 70 millimetres.

Example Ex39: An aerosol-generating article according to any preceding example, wherein the second aerosol-generating substrate has a length of greater than or equal to 15 millimetres. Example Ex40: An aerosol-generating article according to any preceding example, wherein the second aerosol-generating substrate has a length of less than or equal to 30 millimetres.

Example Ex41 : An aerosol-generating article according to any preceding example, wherein a ratio of the length of the first aerosol-generating substrate to the length of the second aerosol-generating substrate is greater than or equal to 1 .5.

Example Ex42: An aerosol-generating article according to any preceding example, wherein a ratio of the length of the first aerosol-generating substrate to the length of the second aerosol-generating substrate is less than or equal to 3.

Example Ex43: An aerosol-generating article according to any preceding example, wherein a total length of the aerosol-generating article is less than or equal to 100 millimetres.

Example Ex44: An aerosol-generating article according to any preceding example, wherein a total length of the aerosol-generating article is greater than or equal to 60 millimetres.

Example Ex45: An aerosol-generating article according to any preceding example, wherein the one or more botanical components comprises one or more of clove, star anise, rosemary, cardamom, cinnamon, kaffir lime, peppermint, sage, chamomile, lavender, eucalyptus, ginger, dill, thyme, oregano and cumin.

Example Ex46: An aerosol-generating article according to any preceding example, wherein the one or more botanical components comprises one or more of clove, star anise, rosemary, cardamom, cinnamon, peppermint, kaffir lime, peppermint, sage, chamomile and lavender.

Example Ex47: An aerosol-generating article according to any preceding example wherein the one or more botanical components comprises one or more of clove, star anise, rosemary, cardamom, cinnamon and kaffir lime.

Example Ex48: An aerosol-generating article according to any preceding example, wherein the one or more botanical components comprises one or more of clove, star anise and rosemary.

Example Ex49: An aerosol-generating article according to any preceding example, wherein the first aerosol-generating substrate is located at an upstream end of the aerosolgenerating article.

Example Ex50: An aerosol-generating article according to any preceding example, wherein the second aerosol-generating substrate is located at a downstream end of the aerosolgenerating article.

Example Ex51 : An aerosol-generating article according to any preceding example, wherein the wrapper circumscribes at least part of the first aerosol-generating substrate and at least part of the second aerosol-generating substrate. Example Ex52: An aerosol-generating article according to any preceding example, wherein the wrapper circumscribes the first aerosol-generating substrate and the second aerosolgenerating substrate.

The invention will now be further described, by way of example only, with reference to the accompanying drawings in which:

Figure 1 is a schematic cross-sectional view of a first example of an aerosol-generating article in accordance with the present disclosure;

Figure 2 is a schematic cross-sectional view of a second example of an aerosol-generating article in accordance with the present disclosure;

Figure 3 is a schematic cross-sectional view of a third example of an aerosol-generating article in accordance with the present disclosure; and

Figure 4 is a schematic cross-sectional view of a first example of an aerosol-generating system in accordance with the present disclosure, the aerosol-generating system comprising the aerosol-generating article of Figure 3 and an aerosol-generating device.

Figure 1 shows a schematic cross-sectional view of an aerosol-generating article 100. The aerosol-generating article 100 has a substantially cylindrical shape along its length. The aerosolgenerating article 100 comprises a first aerosol-generating substrate 102. In the example of Figure 1 , the first aerosol-generating substrate 102 is in the shape of a cylindrical rod. The aerosol-generating article 100 also comprises a second aerosol-generating substrate 104. In the example of Figure 1 , the second aerosol-generating substrate 104 is in the shape of a cylindrical rod.

A longitudinal axis 106 extends centrally along a longitudinal direction of the aerosolgenerating article 100. The first aerosol-generating substrate 102 and the second aerosolgenerating substrate 104 are arranged end-to-end with one another along the longitudinal axis 106. The second aerosol-generating substrate 104 is arranged to be downstream of the first aerosol-generating substrate 102. In the example of Figure 1 , the first aerosol-generating substrate 102 and the second aerosol-generating substrate 104 are arranged such that an upstream end of the second aerosol-generating substrate 104 abuts against a downstream end of the first aerosol-generating substrate 102.

The aerosol-generating article has an upstream end 108 and a downstream end 110.

The first aerosol-generating substrate 102 has a length of 58 millimetres. The second aerosol-generating substrate 104 has a length of 23 millimetres. The aerosol-generating article 100 has a total length of 81 millimetres. A ratio of the length of the first aerosol-generating substrate 102 to the length of the second aerosol-generating substrate 104 is about 2.5.

The aerosol-generating article 100 has a wrapper 112. The wrapper 112 circumscribes the first aerosol-generating substrate 102 and the second aerosol-generating substrate 104. The wrapper 112 comprises tipping paper. The wrapper 112 does not extend beyond the upstream end 108 and the downstream end 110 of the aerosol-generating article 100.

The first aerosol-generating substrate 102 comprises one or more botanical components. In the example of Figure 1 , the first aerosol-generating substrate 102 comprises a first botanical component and a second botanical component. The first aerosol-generating substrate 102 comprises 30 percent by weight of the first botanical component and 5 percent by weight of the second botanical component. The first aerosol-generating substrate 102 comprises 65 percent by weight of tobacco.

The second aerosol-generating substrate 104 comprises one or more botanical components. In the example of Figure 1 , the second aerosol-generating substrate 104 comprises a third botanical component. The second aerosol-generating substrate 104 comprises 15 percent by weight of the third botanical component. The second aerosol-generating substrate 104 comprises 85 percent by weight of tobacco.

The first aerosol-generating substrate 102 has a mass of 1452 milligrams. The second aerosol-generating substrate 104 has a mass of 458 milligrams. The ratio of the mass of the first aerosol-generating substrate 102 to the mass of the second aerosol-generating substrate 104 is 3.2.

In the aerosol-generating article 100 of Figure 1 , the aerosol-generating article 100 has a substantially constant diameter along the entire length of the aerosol-generating article 100. The diameter of the aerosol-generating article 100 is substantially the same along the length of the aerosol-generating article 100 from the upstream end 108 to the downstream end 110. The diameter of the aerosol-generating article 100 may be between 7 millimetres and 12 millimetres. In the example shown in Figure 1 , the diameter of the aerosol-generating article 100 is 8 millimetres.

In use, the user lights the aerosol-generating article 100 at the upstream end 108 of the aerosol-generating article 100. The aerosol-generating article 100 combusts from the upstream end 108 and burns towards the downstream end 110. An aerosol is generated as the first aerosolgenerating substrate 102 combusts. The aerosol generated by the combustion of the first aerosolgenerating substrate 102 passes downstream through the second aerosol-generating substrate 104. Once the first aerosol-generating substrate 102 is substantially combusted, the second aerosol-generating substrate 104 begins to combust. The user inhales any generated aerosol during combustion of the first aerosol-generating substrate 102 and the second aerosolgenerating substrate 104 by drawing on the downstream end 110 of the aerosol-generating article 100.

Figure 2 shows a schematic cross-sectional view of an aerosol-generating article 200. The aerosol-generating article 200 comprises a first aerosol-generating substrate 202 and a second aerosol-generating substrate 204. A longitudinal axis 206 extends centrally along a longitudinal direction of the aerosolgenerating article 200. The first aerosol-generating substrate 202 and the second aerosolgenerating substrate 204 are arranged end-to-end with one another along the longitudinal axis 206. The second aerosol-generating substrate 204 is arranged to be downstream of the first aerosol-generating substrate 202 In the example of Figure 2, the first aerosol-generating substrate 202 and the second aerosol-generating substrate 204 are arranged such that an upstream end of the second aerosol-generating substrate 204 abuts against a downstream end of the first aerosol-generating substrate 202.

The aerosol-generating article 200 has an upstream end 208 and a downstream end 210.

The first aerosol-generating substrate 202 has a length of 58 millimetres. The second aerosol-generating substrate 204 has a length of 23 millimetres. The aerosol-generating article 200 has a total length of 81 millimetres. A ratio of the length of the first aerosol-generating substrate 202 to the length of the second aerosol-generating substrate 204 is about 2.5.

The aerosol-generating article 200 has a wrapper 212. The wrapper 212 circumscribes the first aerosol-generating substrate 202 and the second aerosol-generating substrate 204. The wrapper 212 comprises tipping paper. The wrapper 212 does not extend beyond the upstream end 208 and the downstream end 110 of the aerosol-generating article 200.

The first aerosol-generating substrate 202 one or more botanical components. In the example of Figure 2, the first aerosol-generating substrate 202 comprises a first botanical component and a second botanical component. The first aerosol-generating substrate 202 comprises 30 percent by weight of the first botanical component and 5 percent by weight of the second botanical component. The first aerosol-generating substrate 202 comprises 65 percent by weight of tobacco.

The second aerosol-generating substrate 204 one or more botanical components. In the example of Figure 2, the second aerosol-generating substrate 204 comprises a third botanical component. The second aerosol-generating substrate 204 comprises 15 percent by weight of the third botanical component. The second aerosol-generating substrate 204 comprises 85 percent by weight of tobacco.

The first aerosol-generating substrate 202 has a mass of 1452 milligrams. The second aerosol-generating substrate 204 has a mass of 458 milligrams. The ratio of the mass of the first aerosol-generating substrate 202 to the mass of the second aerosol-generating substrate 204 is 3.2.

The aerosol-generating article 200 has a frustoconical shape.

In the aerosol-generating article 200 of Figure 2, the diameter of the aerosol-generating article 200 changes along the length of the aerosol-generating article 200. In this example, the diameter of the aerosol-generating article 200 increases along the length of the aerosolgenerating article 200 from the upstream end 208 to the downstream end 210. The diameter of the aerosol-generating article 200 at the upstream end 208 of the aerosol-generating article 200 is greater than the diameter of the aerosol-generating article 200 at the downstream end 210.

In the example shown in Figure 2, the diameter of the aerosol-generating article 200 at the downstream end 210 is 8 millimetres and the diameter of the aerosol-generating article 200 at the upstream end 210 is 9.5 millimetres.

In use, the user lights the aerosol-generating article 200 at the upstream end 208 of the aerosol-generating article 200. The aerosol-generating article 200 combusts from the upstream end 208 and burns towards the downstream end 210. An aerosol is generated as the first aerosolgenerating substrate 202 combusts. The aerosol generated by the combustion of the first aerosolgenerating substrate 202 passes downstream through the second aerosol-generating substrate 204. Once the first aerosol-generating substrate 202 is substantially combusted, the second aerosol-generating substrate 204 begins to combust. The user inhales any generated aerosol during combustion of the first aerosol-generating substrate 202 and the second aerosolgenerating substrate 204 by drawing on the downstream end 210 of the aerosol-generating article 200.

Figure 3 shows a schematic cross-sectional view of an aerosol-generating article 300. The aerosol-generating article 300 has a substantially cylindrical shape along its length. The aerosolgenerating article 300 has a diameter of 7 millimetres. The aerosol-generating article 300 has a total length of 45 millimetres.

The aerosol-generating article 300 comprises a first aerosol-generating substrate 302. In the Example of Figure 3, the first aerosol-generating substrate 302 is in the shape of a cylindrical rod. The aerosol-generating article 300 also comprises a second aerosol-generating substrate 304. In the example of Figure 3, the second aerosol-generating substrate 304 is in the shape of a cylindrical rod.

The second aerosol-generating substrate 304 is arranged to be downstream of the first aerosol-generating substrate 302. In the example of Figure 3, the first aerosol-generating substrate 302 and the second aerosol-generating substrate 304 are arranged such that an upstream end of the second aerosol-generating substrate 304 abuts against a downstream end of the first aerosol-generating substrate 302.

The first aerosol-generating substrate 302 has a length of about 3.4 millimetres. The second aerosol-generating substrate 304 has a length of about 8.6 millimetres. The first aerosolgenerating substrate 302 and the second aerosol-generating substrate 304 have a total combined length of about 12 millimetres.

The aerosol-generating article 300 has an upstream end 308 and a downstream end 310.

The first aerosol-generating substrate 302 comprises one or more botanical components. In the example of Figure 3, the first aerosol-generating substrate 302 comprises a first botanical component and a second botanical component. The first aerosol-generating substrate 302 comprises 30 percent by weight of the first botanical component and 5 percent by weight of the second botanical component. The first aerosol-generating substrate 302 comprises 65 percent by weight of tobacco.

The second aerosol-generating substrate 304 comprises one or more botanical components. In the example of Figure 3, the second aerosol-generating substrate 304 comprises a third botanical component. The second aerosol-generating substrate 304 comprises 15 percent by weight of the third botanical component. The second aerosol-generating substrate 304 comprises 85 percent by weight of tobacco.

The first aerosol-generating substrate 302 has a mass of 1452 milligrams. The second aerosol-generating substrate 304 has a mass of 458 milligrams. The ratio of the mass of the first aerosol-generating substrate 302 to the mass of the second aerosol-generating substrate 304 is 3.2.

The aerosol-generating article 300 comprises a downstream section 306. The downstream section 306 is located downstream of both the first aerosol-generating substrate 302 and the second aerosol-generating substrate 304. In the aerosol-generating article 300 of Figure 3, the downstream section 306 abuts a downstream end of the second aerosol-generating substrate 304.

The downstream section 306 comprises a first hollow tubular element 312, a second hollow tubular element 314, and a mouth-end filter 316.

The second hollow tubular element 314 is downstream of the first hollow tubular element 312. The first hollow tubular element 312 is a hollow acetate tube. The second hollow tubular element 314 is a hollow acetate tube. A wall thickness of the second hollow tubular element 314 is smaller than a wall thickness of the first hollow tubular element 312.

The aerosol-generating article 300 comprises an upstream element 318. The upstream element 318 is located at the upstream end 308 of the aerosol-generating article 300. The upstream element 318 is a solid cylindrical plug element having a filled cross-section. The upstream element 318 comprises cellulose acetate.

A longitudinal axis 320 extends centrally along a longitudinal direction of the aerosolgenerating article 300. The upstream element 318, the first aerosol-generating substrate 302, the second aerosol-generating substrate 304, the first hollow tubular element 312, the second hollow tubular element 314, and the mouth-end filter 316 are arranged end-to-end along the longitudinal axis 320.

The upstream element 318, the first aerosol-generating substrate 302, the second aerosol-generating substrate 304, the first hollow tubular element 312 and the second hollow tubular element 314 are circumscribed by a first wrapper 322. The first wrapper 322 does not circumscribe the mouth-end filter 316. The first wrapper 322 is made of paper. The second hollow tubular element 314 and the mouth-end filter 316 are circumscribed by a second wrapper 324. The second wrapper 324 overlaps part of the first wrapper 322. The second wrapper 324 is made of paper.

Each of the first wrapper 322 and the second wrapper 324 do not extend beyond the upstream end 308 and the downstream end 310 of the aerosol-generating article 300.

The aerosol-generating article 300 comprises a susceptor element 326. The susceptor element 326 is arranged in a radially centrally position and is located within the first aerosolgenerating substrate 202 and the second aerosol-generating substrate 204. The elongate susceptor element 326 is located in thermal contact with the first aerosol-generating substrate 302 and the second aerosol-generating substrate 304 such that the first aerosol-generating substrate 302 and the second aerosol-generating substrate 304 are heated by the susceptor element 326, when the susceptor element 326 is inductively heated when located within a fluctuating electromagnetic field.

The second hollow tubular element 314 comprises a ventilation zone 328 at a location along the second hollow tubular element 314. The ventilation zone 328 comprises one or more rows of ventilation holes arranged circumferentially around the second hollow tubular element 314 in a cross-section that is substantially perpendicular to the longitudinal axis 320 of the aerosol-generating article 300. The ventilation holes extend through both the first wrapper 322 and the second wrapper 324 in a direction perpendicular to the longitudinal axis 320.

The mouth-end filter 316 is located at a downstream end of the article 300. The mouthend filter 316 abuts the downstream end of the second hollow tubular element 314. The mouthend filter 316 comprises a low-density, cellulose acetate filter segment.

Figure 4 shows a schematic cross-sectional view of a portion of an aerosol-generating system 500 comprising the aerosol-generating article 300 of Figure 3 and an aerosol-generating device 400.

The aerosol-generating device 400 comprises a device cavity 402. The device cavity 402 is configured to receive at least a part of the aerosol-generating article 300. The distal end of the device cavity 402 has a closed end. The proximal end of the device cavity 402 has an open end. The aerosol-generating article 300 is insertable into the device cavity 402 via the open end of the device cavity 402.

The aerosol-generating device 400 has an inductor coil 404 which circumscribes the device cavity 402, and surrounds the susceptor element 326 of the aerosol-generating article 300 when the aerosol-generating article 300 is inserted into the device cavity 402. The inductor coil 404 is arranged to generate a varying magnetic field in the device cavity 402, which interacts with the susceptor element 326 to inductively heat the susceptor element 326. The aerosol-generating device 400 comprises a power supply (not shown) and control electronics (not shown) that are arranged to supply power to the inductor coil 404 to generate a varying magnetic field in the device cavity 402 to inductively heat the susceptor element 326.

In use, the user inserts the aerosol-generating article 300 into the device cavity 402 of the aerosol-generating device 400 and activates the aerosol-generating device 400. Activating the aerosol-generating device causes the inductor coil 404 to be actuated. Actuation of the inductor coil 404 may be manually operated or may occur automatically in response to a user drawing on the aerosol-generating article 300 when the aerosol-generating article 300 is inserted into the device cavity 402. Actuating the inductor coil 404 causes the susceptor element 326 to increase in temperature as it interacts with the fluctuating electromagnetic field provided by the inductor coil 404. The susceptor element 326 then heats the first aerosol-generating substrate 302 and the second aerosol-generating substrate 304 to generate an aerosol. The user inhales any generated aerosol from the heating of the first aerosol-generating substrate 302 and the second aerosol-generating substrate 304 by drawing on the mouth-end filter 316 of the aerosolgenerating article 300.

For the purpose of the present description and of the appended claims, except where otherwise indicated, all numbers expressing amounts, quantities, percentages, and so forth, are to be understood as being modified in all instances by the term "about". Also, all ranges include the maximum and minimum points disclosed and include any intermediate ranges therein, which may or may not be specifically enumerated herein. In this context, therefore, a number A is understood as A ± 10% of A. Within this context, a number A may be considered to include numerical values that are within general standard error for the measurement of the property that the number A modifies. The number A, in some instances as used in the appended claims, may deviate by the percentages enumerated above provided that the amount by which A deviates does not materially affect the basic and novel characteristic(s) of the claimed invention. Also, all ranges include the maximum and minimum points disclosed and include any intermediate ranges therein, which may or may not be specifically enumerated herein.

Claims

1. An aerosol-generating article, the aerosol-generating article comprising: a first aerosol-generating substrate; a second aerosol-generating substrate, the second aerosol-generating substrate being downstream of the first aerosol-generating substrate; a wrapper circumscribing at least one of the first aerosol-generating substrate and the second aerosol-generating substrate; wherein the first aerosol-generating substrate comprises one or more botanical components and the second aerosol-generating substrate comprises one or more botanical components; wherein one or both of the first aerosol-generating substrate and the second aerosol-generating substrate comprises greater than or equal to 5 percent by weight of the one or more botanical components; wherein the composition of the first aerosol-generating substrate and the composition of the second aerosol-generating substrate are different, and wherein one or both of the first aerosol-generating substrate and the second aerosol-generating substrate comprises tobacco or a tobacco material.

2. An aerosol-generating article according to claim 1 , wherein the first aerosol-generating substrate comprises greater than or equal to 5 percent by weight of the one or more botanical components.

3. An aerosol-generating article according to claim 1 or 2, wherein the second aerosolgenerating substrate comprises greater than or equal to 1 percent by weight of the one or more botanical components.

4. An aerosol-generating article according to any one of claims 1 to 3, wherein the first aerosol-generating substrate comprises greater than or equal to 50 percent by weight of tobacco or a tobacco material.

5. An aerosol-generating article according to any preceding claim, wherein the second aerosol-generating substrate comprises greater than or equal to 60 percent by weight of tobacco or a tobacco material.

6. An aerosol-generating article according to any preceding claim, wherein the first aerosolgenerating substrate has a mass of between 1000 milligrams and 2000 milligrams.

7. An aerosol-generating article according to any preceding claim, wherein the second aerosol-generating substrate has a mass of between 300 milligrams and 700 milligrams.

8. An aerosol-generating article according to any preceding claim, wherein a ratio of a mass of the first aerosol-generating substrate to a mass of the second aerosol-generating substrate is greater than or equal to 2.

9. An aerosol-generating article according to any preceding claim, wherein the diameter of the aerosol-generating article at an upstream end of the aerosol-generating article is greater than a diameter of the aerosol-generating article at a downstream end of the aerosol-generating article.

10. An aerosol-generating article according to any preceding claim, wherein the aerosolgenerating article has a frustoconical shape.

11. An aerosol-generating article according to any preceding claim, wherein a length of the first aerosol-generating substrate is greater than a length of the second aerosol-generating substrate.

12. An aerosol-generating article according to claim 11 , wherein a ratio of the length of the first aerosol-generating substrate to the length of the second aerosol-generating substrate is greater than or equal to 1 .5.

13. An aerosol-generating article according to any preceding claim, wherein the one or more botanical components comprises one or more of clove, star anise, rosemary, cardamom, cinnamon, kaffir lime, peppermint, sage, chamomile, lavender, eucalyptus, ginger, dill, thyme, oregano and cumin.

14. An aerosol-generating article according to any preceding claim, wherein the first aerosolgenerating substrate is located at an upstream end of the aerosol-generating article.

15. An aerosol-generating article according to any preceding claim, wherein the wrapper circumscribes the first aerosol-generating substrate and the second aerosol-generating substrate.