Aerosol generating article comprising two substrates

Abstract

An aerosol-generating article (200) is provided. 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) surrounds at least one of the first aerosol-generating substrate (202) and the second aerosol-generating substrate (204). The first aerosol-generating substrate (202) contains one or more plant components, and the second aerosol-generating substrate (204) contains one or more plant components. One or both of the first aerosol-generating substrate (202) and the second aerosol-generating substrate (204) contain one or more plant components in a weight percentage of 5 percent or more. 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) contain tobacco or tobacco material.

Description

Technical Field

[0001] The present invention relates to an aerosol generating article comprising a first aerosol generating substrate and a second aerosol generating substrate. One or both of the first aerosol generating substrate and the second aerosol generating substrate contain plant constituents.

Background Art

[0002] Aerosol generating articles in which an aerosol generating substrate such as a tobacco-containing substrate is combusted or heated rather than combusted are known in the art. To provide additional flavor to the consumer during use, it is known to incorporate flavor additives into the aerosol generating article. The flavorant may be used to enhance the flavor generated with the combustion or heating of the aerosol generating substrate within the aerosol generating article. The flavorant can be used to deliver taste (flavor), smell (odor), or both taste and smell to the user inhaling the aerosol.

[0003] It is also known to provide a flavorant in a conventional combustible cigarette that is smoked by igniting the end opposite the mouthpiece of the cigarette to generate inhalable smoke such that the tobacco rod burns. To provide additional flavor to the mainstream smoke as the tobacco burns, typically one or more flavorants are mixed with the tobacco within the tobacco rod. Such flavorants can be provided, for example, as essential oils or as natural plant materials such as natural cut cloves. An example of such a smoking article is the "kretek" cigarette known as a cigarette in which clove material such as clove particles is included together with the tobacco within the tobacco rod. When the clove of the kretek cigarette burns, its flavor and aroma are released into the mainstream smoke.

[0004] It is desirable to provide an aerosol generating article that delivers an aerosol with improved flavor and sensory stimulation characteristics. Furthermore, it is also desirable to improve the customization of the flavor and sensory stimulation characteristics of the aerosol generating article. [Overview of the Initiative]

[0005] The present invention provides an aerosol-generating article. The aerosol-generating article may comprise a first aerosol-generating substrate. The aerosol-generating article may comprise a second aerosol-generating substrate. The second aerosol-generating substrate may be downstream of the first aerosol-generating substrate. The aerosol-generating article may comprise a wrapper. The wrapper may surround 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 contain one or more plant components in a weight percentage of 5 percent or more. The composition of the first aerosol-generating substrate and the composition of the second aerosol-generating substrate may be different. One or both of the first aerosol-generating substrate and the second aerosol-generating substrate may contain tobacco or tobacco material.

[0006] The present invention provides 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 surrounds 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 contain 5% by weight or more of one or more plant components. The composition of the first aerosol-generating 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 contain tobacco or tobacco material.

[0007] Advantageously, providing a first aerosol-generating substrate and a second aerosol-generating substrate, each having a different composition, wherein one or both of the first and second aerosol-generating substrates contain 5% by weight of one or more plant components, and one or both of the first and second aerosol-generating substrates contain tobacco or tobacco material, may allow the flavors provided by each of the two aerosol-generating substrates to be combined and mixed within the generated aerosol. Combining and mixing flavors may improve the overall flavor and sensory stimulating properties of the generated aerosol.

[0008] Advantageously, providing a first aerosol-generating substrate and a second aerosol-generating substrate, each having a different composition, wherein one or both of the first and second aerosol-generating substrates contain 5% by weight or more of one or more plant components, and one or both of the first and second aerosol-generating substrates contain tobacco or tobacco material, improves flavor customization. For example, new aerosol flavors may be generated by providing different combinations of the first and second aerosol-generating substrates. In other words, the ability to provide different compositions for each of the first and second aerosol-generating substrates may improve the versatility of articles that can be constructed using them, compared to known articles containing a single aerosol-generating substrate.

[0009] Advantageously, the ability to easily provide different compositions for each of the first and second aerosol-generating substrates can improve the versatility of constructing articles using them without increasing the complexity of article manufacturing or 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 and second aerosol-generating substrates having different compositions, and then the first and second aerosol-generating substrates can be combined in different configurations to achieve the desired flavor of the generated aerosol. This may result in the generation of a new and distinctive flavor of the generated aerosol, thereby enhancing the user experience.

[0010] Advantageously, providing a second aerosol-generating substrate downstream of a first aerosol-generating substrate may improve the blending of the flavors of the first and second aerosol-generating substrates. Improved flavor blending may improve the overall flavor and sensory characteristics of the generated aerosol.

[0011] Advantageously, providing a second aerosol generating substrate downstream of a first aerosol generating substrate may improve the filtration of aerosols generated by the first aerosol generating substrate as a result of the aerosols passing downstream past the second aerosol generating substrate. Improved aerosol filtration may be particularly advantageous when the aerosol generating article does not have an end filter. Advantageously, providing a second aerosol generating substrate downstream of a first aerosol generating substrate may enable the provision of an aerosol generating article without an end filter. Providing an aerosol generating article without an end filter may reduce waste after use of the aerosol generating article.

[0012] As used herein, the term "aerosol-generating substrate" means a substrate having the ability to release volatile compounds that can condense upon heating or combustion to form aerosols.

[0013] As used herein, the term “aerosol” means the dispersion of solid particles or droplets, or a combination of solid particles and droplets, in a gas. Aerosols may be visible or invisible. Aerosols may include not only vapors of substances that are normally liquid or solid at room temperature, but also solid particles or droplets of liquid, or a combination of solid particles and droplets of liquid.

[0014] As used herein, the term "aerosol-generating article" means an article comprising an aerosol-generating substrate having the ability to release volatile compounds capable of forming aerosols. Aerosol-generating articles may be disposable.

[0015] As used herein, the term “plant components” means plant materials excluding tobacco or tobacco materials.

[0016] As used herein, the terms “upstream,” “downstream,” “proximal,” and “distal” are used to describe the relative positions of elements or parts of elements of aerosol generating articles, aerosol generating devices, and aerosol generating systems as described herein. An aerosol generating article as described herein may have a proximal end through which an aerosol exits the aerosol generating article when in use. The proximal end may also be called the mouth end. When in use, the user inhales the proximal or mouth end of the aerosol generating article to inhale the aerosol generated by the aerosol generating article. The aerosol generating article may have a distal end opposite to the proximal or mouth end. The proximal or mouth end of the aerosol generating article may also be called the downstream end. The distal end of the aerosol generating article may also be called the upstream end. Components of an aerosol generating article, or parts of components, may be described as being upstream or downstream of each other based on their relative positions between the proximal or downstream end and the distal or upstream end of the aerosol generating article.

[0017] As used herein, the term “long axis direction” is used to describe the direction between the downstream or proximal end and the opposite upstream or distal end of the aerosol generating article, aerosol generating device, and aerosol generating system according to the present invention.

[0018] As used herein, the term “length” is used to describe the maximum dimension of an element or part of an aerosol generating article, aerosol generating device, and aerosol generating system according to this disclosure, either in the longitudinal direction or along the longitudinal axis.

[0019] As used herein, the term “transverse direction” is used to describe a direction perpendicular to the longitudinal axis.

[0020] As used herein, the term “width” is used to describe the maximum transverse dimension of an element or part of an aerosol generating article, aerosol generating device, and aerosol generating system as disclosed herein. For avoidance of doubt, as used herein, the term “diameter” may also be used to refer to the “width” of an element or part of an element having a circular cross-section as disclosed herein.

[0021] Unless otherwise stated, references to the “cross-section” of an aerosol-generating article or its components refer to a cross-section along the long axis or perpendicular to the long axis.

[0022] During use of the aerosol-generating article, one or both of the first aerosol-generating substrate and the second aerosol-generating substrate may be burned to form an aerosol.

[0023] Alternatively, during use of the aerosol-generating article, one or both of the first aerosol-generating substrate and the second aerosol-generating substrate may be heated rather than burned to form an aerosol. 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 electric heating elements to generate an aerosol. In another embodiment, one or both of the first aerosol-generating substrate and the second aerosol-generating substrate may be heated by heat transfer from a flammable heat source to generate an aerosol.

[0024] The first aerosol-generating substrate may contain one or more plant components. The first aerosol-generating substrate may contain multiple plant components. The second aerosol-generating substrate may contain one or more plant components. The second aerosol-generating substrate may contain multiple plant components.

[0025] The first aerosol generation substrate and the second aerosol generation substrate may each contain different plant components. The first aerosol generation substrate and the second aerosol generation substrate may each contain the same plant components.

[0026] The one or more plant components may be selected from one or more of chrysanthemum, cardamom, star anise, safflower flower, chamomile, asparagus fern, lavender, rose petals, nasturtium flower, jasmine, bay leaf, kochia scoparia, orange leaf, lemon verbena, coriander, thyme, cumin, rosemary, allspice, sage, nutmeg, burdock, clove, corn beard, garlic, garlic powder, basil, eschalot, banana leaf, curry powder, perilla leaf, cayenne pepper, tea leaves, palm sugar, ginger, galangal, turmeric, camphor tree, cinnamon, black pepper, galangal, pepper, habanero, onion, lemongrass, celery, vanilla, chive, tamarind, bamboo leaf, dried red pepper, chili powder, mace, tarasene, fennel, oregano, mint leaf, parsley, nipa palm leaf, benzoin, kukui nut, and angelica.

[0027] The one or more plant components may be selected from one or more of clove, star anise, rosemary, cardamom, cinnamon, kochia scoparia, peppermint, sage, chamomile, lavender, eucalyptus, ginger, dill, thyme, oregano, and cumin.

[0028] The one or more plant components may be selected from one or more of clove, star anise, rosemary, cardamom, cinnamon, peppermint, kochia scoparia, peppermint, sage, chamomile, and lavender.

[0029] The one or more plant components may be selected from one or more of clove, star anise, rosemary, cardamom, cinnamon, and kochia scoparia.

[0030] One or more plant components may be selected from one or more of clove, star anise, and rosemary.

[0031] One or more plant components may include clove. As is known, clove is the flower bud and stem of Syzygium aromaticum, a tree of the Myrtaceae family that has been effectively dried and is commonly used as a spice. As a result, each clove includes the calyx of the sepal and the corolla of the unopened petals that form the ball-like part attached to the calyx. As used herein, the term "clove" encompasses particles derived from the flower bud and stem of Syzygium aromaticum and may also include whole clove, crushed or ground clove, or clove physically processed in another way to reduce the particle size.

[0032] One or more plant components may be formed into a homogenized plant material by aggregating the particles of the one or more plant components. One or more plant components may be formed into a sheet.

[0033] The slurry may be formed to include particles of the plant component, optionally tobacco particles, water, a binder, and an aerosol former, and the slurry is cast or extruded in the form of a sheet or strand and the sheet or strand is dried at 80°C to 160°C. When a sheet is formed, the sheet may be cut into strands or the sheets may be assembled to form a rod. The sheet may be curled before the assembling step.

[0034] As used herein, the term "sheet" means a layered element having a width and length substantially greater than its thickness.

[0035] A sheet of one or more plant components may be cut into strands, flakes, or fragments. Alternatively, one or more plant components may be cut directly from their natural physical form into strands, flakes, or fragments. The strands, flakes, or fragments of one or more plant components may have a width of 0.2 mm or more, 0.25 mm or more, or 0.3 mm or more. The strands, flakes, or fragments of one or more plant components may have a width of 1 mm or less, 0.95 mm or less, or 0.9 mm or less. The strands, flakes, or fragments of one or more plant components may have a width of 0.2 mm to 1 mm.

[0036] The first aerosol generating substrate may contain tobacco or tobacco material. The second aerosol generating substrate may contain tobacco or tobacco material.

[0037] The first aerosol-generating substrate may contain one or more plant components, and may also contain tobacco or tobacco materials. The second aerosol-generating substrate may contain one or more plant components, and may also contain tobacco or tobacco materials.

[0038] The first aerosol-generating substrate may contain one or more plant components and tobacco or tobacco material. The second aerosol-generating substrate may contain one or more plant components and tobacco or tobacco material.

[0039] As used herein, the term “tobacco material” is used to describe any material containing tobacco, including but not limited to tobacco leaves, tobacco veins, tobacco stems, tobacco petioles, tobacco dust, puffed tobacco, reconstituted tobacco material, and homogenized tobacco material.

[0040] The first aerosol generating substrate may contain homogenized tobacco material. The second aerosol generating substrate may contain homogenized tobacco material.

[0041] As used herein, the term “homogenized tobacco material” means a material formed by agglomerating particulate tobacco.

[0042] 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-dried tobacco, dark-cured tobacco, air-dried tobacco, fire-dried tobacco, Burley tobacco, Maryland tobacco, Oriental tobacco, Virginia tobacco, and other specialty tobaccos.

[0043] The first aerosol generating substrate may contain tobacco cut filler. The second aerosol generating substrate may also contain tobacco cut filler.

[0044] As used herein, the term "tobacco cut filler" is used to describe an aerosol-generating substrate containing multiple strands of tobacco leaf.

[0045] As used herein, the term “strand” describes an elongated element of a material having a width and length substantially greater than its width and thickness. The term “strand” should be considered to encompass any other homogenized tobacco material having a form of filament, fragment, and similar shape. Strands of homogenized tobacco material may be formed from a sheet of homogenized tobacco material, for example, by cutting or shredding, or by other means, such as by extrusion.

[0046] The "cut length" of the shredded tobacco material for incorporation into the cut filler refers to the maximum dimension of the tobacco material piece resulting from the cutting operation, which is the maximum measurable distance between two points on the cut piece.

[0047] The "cut width" of the cut pieces of tobacco material for incorporation into a cut filler refers to the maximum dimension of the tobacco material piece resulting from the cutting operation, measured in a direction substantially perpendicular to the long axis of the particle. Thus, the cut width of an individual cut piece is taken at a point along the length of the piece that yields the maximum cross-sectional area.

[0048] The tobacco material may be shredded into pieces having a cutting width of 0.2 mm or more, 0.25 mm or more, or 0.3 mm or more. The tobacco material may be shredded into pieces having a cutting width of 1 mm or less, 0.95 mm or less, or 0.9 mm or less. The tobacco material may be shredded into pieces having a cutting width of 0.2 mm to 1 mm.

[0049] The first aerosol generating substrate may contain one or more plant components in an amount of 5% by weight or more, one or more plant components in an amount of 10% by weight or more, one or more plant components in an amount of 15% by weight or more, one or more plant components in an amount of 20% by weight or more, one or more plant components in an amount of 25% by weight or more, or one or more plant components in an amount of 30% by weight or more.

[0050] The first aerosol generating substrate may contain one or more plant components in a weight of 50% or less, one or more plant components in a weight of 45% or less, one or more plant components in a weight of 40% or less, one or more plant components in a weight of 35% or less, one or more plant components in a weight of 30% or less, one or more plant components in a weight of 25% or less, one or more plant components in a weight of 20% or less, one or more plant components in a weight of 15% or less, or one or more plant components in a weight of 10% or less.

[0051] The first aerosol generating substrate may contain one or more plant components in a weight of 5 to 50 percent, one or more plant components in a weight of 5 to 45 percent, one or more plant components in a weight of 5 to 40 percent, one or more plant components in a weight of 5 to 35 percent, one or more plant components in a weight of 5 to 30 percent, one or more plant components in a weight of 5 to 25 percent, one or more plant components in a weight of 5 to 20 percent, one or more plant components in a weight of 5 to 15 percent, or one or more plant components in a weight of 5 to 10 percent.

[0052] The first aerosol generating substrate may contain 50% or more by weight of tobacco or tobacco material, 55% or more by weight of tobacco or tobacco material, 60% or more by weight of tobacco or tobacco material, 65% or more by weight of tobacco or tobacco material, 70% or more by weight of tobacco or tobacco material, 75% or more by weight of tobacco or tobacco material, 80% or more by weight of tobacco or tobacco material, 85% or more by weight of tobacco or tobacco material, 90% or more by weight of tobacco or tobacco material, or 95% or more by weight of tobacco or tobacco material.

[0053] The first aerosol generating substrate may contain 100% by weight or less of tobacco or tobacco material, 95% by weight or less of tobacco or tobacco material, 90% by weight or less of tobacco or tobacco material, 85% by weight or less of tobacco or tobacco material, 80% by weight or less of tobacco or tobacco material, 75% by weight or less of tobacco or tobacco material, or 70% by weight or less of tobacco or tobacco material.

[0054] For example, the first aerosol generating substrate may contain 60 to 95 percent by weight of tobacco or tobacco material.

[0055] The ratio of the mass of tobacco or tobacco material in the first aerosol generating substrate to the mass of one or more plant components in the first aerosol generating substrate may be 1.2 or more, 1.5 or more, or 1.8 or more.

[0056] The ratio of the mass of tobacco or tobacco material in the first aerosol-generating substrate to the mass of one or more plant components in the first aerosol-generating substrate may be 2.5 or less, 2.2 or less, or 1.9 or less.

[0057] The ratio of the mass of tobacco or tobacco material in the first aerosol-generating substrate to the mass of one or more plant components in the first aerosol-generating substrate may be 1.2-2.5, 1.2-2.2, 1.2-1.9, 1.5-2.5, 1.5-2.2, 1.5-1.9, 1.8-2.5, 1.8-2.2, or 1.8-1.9.

[0058] The first aerosol generating substrate may contain nicotine.

[0059] As used herein, the term "nicotine" is used to describe nicotine, nicotine base, or nicotine salt. The aerosol-generating film may contain natural or synthetic nicotine.

[0060] The first aerosol generating substrate may contain one or more aerosol forming bodies. The first aerosol generating substrate may contain a plurality of aerosol forming bodies.

[0061] The aerosol-forming compound may be any suitable known compound or mixture of compounds that facilitates the formation of a high-density and stable aerosol during use. The aerosol-forming compound may facilitate the aerosol being substantially resistant to thermal decomposition at the temperatures typically applied during use of the aerosol-generating article. Suitable aerosol-forming compounds include, for example: polyhydric alcohols (e.g., triethylene glycol, 1,3-butanediol, propylene glycol, and glycerin); esters of polyhydric alcohols (e.g., glycerol mono-, di-, or triacetate); aliphatic esters of mono-, di-, or polycarboxylic acids (e.g., dimethyl dodecanediol and dimethyl tetradecanediol); and combinations thereof. The aerosol-forming compound may contain one or more of glycerin and propylene glycol. The aerosol-forming compound may consist of glycerin or propylene glycol, or a combination of glycerin and propylene glycol.

[0062] The first aerosol generating substrate may contain one or more carboxylic acids. The first aerosol generating substrate may contain multiple carboxylic acids.

[0063] The first aerosol generating substrate may contain one or more aerosol forming bodies, and the first aerosol generating substrate may contain nicotine, and the first aerosol generating substrate may contain one or more carboxylic acids, especially if the first aerosol generating substrate is configured to form an aerosol by heating rather than combustion.

[0064] The aerosol generating article comprises a first aerosol generating substrate.

[0065] The maximum diameter of the first aerosol generating substrate may be greater than the maximum diameter of the second aerosol generating substrate. In other words, the largest diameter of the first aerosol generating substrate along its entire length may be greater than the largest diameter of the second aerosol generating substrate along its entire length.

[0066] The first aerosol generating substrate may have a frustoconical shape.

[0067] The maximum diameter of the first aerosol generating substrate may be 7 mm or more, 7.5 mm or more, 8 mm or more, 8.5 mm or more, 9 mm or more, or 9.5 mm or more.

[0068] The maximum diameter of the first aerosol generating substrate may be 12 mm or less, 11.5 mm or less, 11 mm or less, 10.5 mm or less, 10 mm or less, or 9.5 mm or less.

[0069] The maximum diameter of the first aerosol generating substrate may be 7-12 mm, 7.5-12 mm, 7.5-11.5 mm, 8-11 mm, 8.5-10.5 mm, 9-10 mm, or approximately 9.5 mm.

[0070] The first aerosol generating substrate may have a length 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.

[0071] The length of the first aerosol generating substrate may be greater than the length of the second aerosol generating substrate.

[0072] The first aerosol generating substrate may have a length of 20 mm or more, 30 mm or more, 40 mm or more, 45 mm or more, 50 mm or more, or 60 mm or more.

[0073] The first aerosol generating substrate may have a length of 70 mm or less, 60 mm or less, or 50 mm or less.

[0074] The first aerosol generating substrate may have a length of 20-70 mm, 20-60 mm, 20-50 mm, 30-70 mm, 30-60 mm, 30-60 mm, 40-70 mm, 40-60 mm, 40-50 mm, 45-70 mm, 45-60 mm, 45-50 mm, 50-70 mm, 50-60 mm, or 60-70 mm.

[0075] The first aerosol generating substrate may have a length of 5 millimeters or more. The first aerosol generating substrate may have a length of 10 millimeters or less. The first aerosol generating substrate may have a length of 5 millimeters to 10 millimeters.

[0076] The first aerosol generating substrate may have a mass of 1000 milligrams or more, 1200 milligrams or more, or 1400 milligrams or more.

[0077] The first aerosol generating substrate may have a mass of 2000 milligrams or less, 1800 milligrams or less, or 1600 milligrams or less.

[0078] The first aerosol generating substrate may have a mass of 1000-2000 milligrams, 1200-2000 milligrams, 1400-2000 milligrams, 1000-1800 milligrams, 1200-1800 milligrams, 1400-1800 milligrams, 1000-1600 milligrams, 1200-1600 milligrams, or 1400-1600 milligrams.

[0079] The density of the first aerosol-generating substrate may be 500 kilograms per cubic meter or less, 450 kilograms per cubic meter or less, or 400 kilograms per cubic meter or less.

[0080] The density of the first aerosol-generating substrate may be 300 kilograms per cubic meter or more, 340 kilograms per cubic meter or more, or 380 kilograms per cubic meter or more.

[0081] The density of the first aerosol-generating substrate may be 300 kilograms / cubic meter to 500 kilograms / cubic meter, 300 kilograms / cubic meter to 450 kilograms / cubic meter, 300 kilograms / cubic meter to 400 kilograms / cubic meter, 340 kilograms / cubic meter to 500 kilograms / cubic meter, 340 kilograms / cubic meter to 450 kilograms / cubic meter, 340 kilograms / cubic meter to 400 kilograms / cubic meter, 380 kilograms / cubic meter to 500 kilograms / cubic meter, 380 kilograms / cubic meter to 450 kilograms / cubic meter, or 380 kilograms / cubic meter to 400 kilograms / cubic meter.

[0082] As used herein with respect to the first aerosol-generating substrate, the term "density" 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 it by the volume of the first aerosol-generating substrate (excluding any wrappers).

[0083] The second aerosol-generating substrate does not need to contain one or more plant components.

[0084] The second aerosol-generating substrate may contain one or more plant components in an amount of 1% by weight or more, one or more plant components in an amount of 5% by weight or more, one or more plant components in an amount of 10% by weight or more, or one or more plant components in an amount of 15% by weight or more.

[0085] The second aerosol-generating substrate may contain one or more plant components in a weight of 20 percent or less, one or more plant components in a weight of 15 percent or less, one or more plant components in a weight of 10 percent or less, or one or more plant components in a weight of 5 percent or less.

[0086] The second aerosol-generating substrate may contain one or more plant components in a weight of 1 to 20 percent, one or more plant components in a weight of 1 to 15 percent, one or more plant components in a weight of 1 to 10 percent, or one or more plant components in a weight of 1 to 5 percent.

[0087] The second aerosol generating substrate may contain 60% or more by weight of tobacco or tobacco material, 65% or more by weight of tobacco or tobacco material, 70% or more by weight of tobacco or tobacco material, 75% or more by weight of tobacco or tobacco material, 80% or more by weight of tobacco or tobacco material, 85% or more by weight of tobacco or tobacco material, 90% or more by weight of tobacco or tobacco material, 95% or more by weight of tobacco or tobacco material, or 100% or more by weight of tobacco or tobacco material.

[0088] The second aerosol generating substrate may contain 100% or less by weight of tobacco or tobacco material, 97% or less by weight of tobacco or tobacco material, 95% or less by weight of tobacco or tobacco material, 90% or less by weight of tobacco or tobacco material, 85% or less by weight of tobacco or tobacco material, or 80% or less by weight of tobacco or tobacco material.

[0089] For example, the second aerosol generating substrate may contain 85% to 100% by weight of tobacco or tobacco material.

[0090] The ratio of the mass of tobacco or tobacco material in the second aerosol generating substrate to the mass of one or more plant components in the second aerosol generating substrate may be 3 or more, 4 or more, or 5 or more.

[0091] The ratio of the mass of tobacco or tobacco material in the second aerosol generating substrate to the mass of one or more plant components in the second aerosol generating substrate may be 8 or less, 7 or less, or 6 or less.

[0092] The ratio of the mass of tobacco or tobacco material in the second aerosol-generating substrate to the mass of one or more plant components in the second aerosol-generating substrate may be 3-8, 3-7, 3-6, 4-8, 4-7, 4-6, 5-8, 5-7, or 5-6.

[0093] The ratio of the mass of tobacco or tobacco material in the second aerosol generating substrate to the mass of one or more plant components in the second aerosol generating substrate may be greater than the ratio of the mass of tobacco or tobacco material in the first aerosol generating substrate to the mass of one or more plant components in the first aerosol generating substrate.

[0094] The ratio of the mass of tobacco or tobacco material in the second aerosol-generating substrate to the mass of one or more plant components in the second aerosol-generating substrate may be smaller than the ratio of the mass of tobacco or tobacco material in the first aerosol-generating substrate to the mass of one or more plant components in the first aerosol-generating substrate.

[0095] The second aerosol generating substrate may contain nicotine.

[0096] As used herein, the term "nicotine" is used to describe nicotine, nicotine base, or nicotine salt. The aerosol-generating film may contain natural or synthetic nicotine.

[0097] The second aerosol generating substrate may contain one or more aerosol forming bodies. The second aerosol generating substrate may contain multiple aerosol forming bodies.

[0098] The aerosol-forming compound may be any suitable known compound or mixture of compounds that facilitates the formation of a high-density and stable aerosol during use. The aerosol-forming compound may facilitate the aerosol being substantially resistant to thermal decomposition at the temperatures typically applied during use of the aerosol-generating article. Suitable aerosol-forming compounds include, for example: polyhydric alcohols (e.g., triethylene glycol, 1,3-butanediol, propylene glycol, and glycerin); esters of polyhydric alcohols (e.g., glycerol mono-, di-, or triacetate); aliphatic esters of mono-, di-, or polycarboxylic acids (e.g., dimethyl dodecanediol and dimethyl tetradecanediol); and combinations thereof. The aerosol-forming compound may contain one or more of glycerin and propylene glycol. The aerosol-forming compound may consist of glycerin or propylene glycol, or a combination of glycerin and propylene glycol.

[0099] The second aerosol-generating substrate may contain one or more carboxylic acids. The second aerosol-generating substrate may contain multiple carboxylic acids.

[0100] The second aerosol generating substrate may contain one or more aerosol forming bodies, and the second aerosol generating substrate may contain nicotine, and the second aerosol generating substrate may contain one or more carboxylic acids, especially if the second aerosol generating substrate is configured to form an aerosol by heating rather than combustion.

[0101] The aerosol generating article comprises a second aerosol generating substrate.

[0102] The second aerosol generating substrate may have a frustoconical shape.

[0103] The maximum diameter of the second aerosol generating substrate may be 7 mm or more, 7.5 mm or more, 8 mm or more, or 8.5 mm or more.

[0104] The maximum diameter of the second aerosol generating substrate may be 9.5 mm or less, 9 mm or less, or 8.5 mm or less.

[0105] The maximum diameter of the second aerosol generating substrate may be 7 to 10 mm, 7.5 to 9.5 mm, 8 to 9 mm, or approximately 8.5 mm.

[0106] The second aerosol generating substrate may have a length 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.

[0107] The second aerosol generating substrate may have a length of 15 mm or more, 20 mm or more, or 25 mm or more.

[0108] The second aerosol generating substrate may have a length of 30 mm or less, 25 mm or less, or 20 mm or less.

[0109] The second aerosol generating substrate may have a length of 15-30 mm, 15-25 mm, 15-20 mm, 20-30 mm, 20-25 mm, or 25-30 mm.

[0110] The second aerosol generating substrate may have a length of 2 millimeters or more. The second aerosol generating substrate may have a length of 7 millimeters or less. The second aerosol generating substrate may have a length of 2 millimeters to 7 millimeters.

[0111] The second aerosol generating substrate may have a mass of 200 milligrams or more, 300 milligrams or more, or 400 milligrams or more.

[0112] The second aerosol generating substrate may have a mass of 700 milligrams or less, 600 milligrams or less, or 500 milligrams or less.

[0113] The second aerosol generating substrate may have a mass of 200 milligrams to 700 milligrams, 200 milligrams to 600 milligrams, 200 milligrams to 500 milligrams, 300 milligrams to 700 milligrams, 300 milligrams to 600 milligrams, 300 milligrams to 500 milligrams, 400 milligrams to 700 milligrams, 400 milligrams to 600 milligrams, or 400 milligrams to 500 milligrams.

[0114] The density of the second aerosol-generating substrate may be 500 kilograms per cubic meter or less, 450 kilograms per cubic meter or less, or 400 kilograms per cubic meter or less.

[0115] The density of the second aerosol-generating substrate may be 300 kilograms per cubic meter or more, 330 kilograms per cubic meter or more, or 360 kilograms per cubic meter or more.

[0116] The density of the second aerosol-generating substrate may be 300 kilograms / cubic meter to 500 kilograms / cubic meter, 300 kilograms / cubic meter to 450 kilograms / cubic meter, 300 kilograms / cubic meter to 400 kilograms / cubic meter, 330 kilograms / cubic meter to 500 kilograms / cubic meter, 330 kilograms / cubic meter to 450 kilograms / cubic meter, 330 kilograms / cubic meter to 400 kilograms / cubic meter, 360 kilograms / cubic meter to 500 kilograms / cubic meter, 360 kilograms / cubic meter to 450 kilograms / cubic meter, or 360 kilograms / cubic meter to 400 kilograms / cubic meter.

[0117] As used herein with respect to the second aerosol-generating substrate, the term "density" 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 it by the volume of the second aerosol-generating substrate (excluding any wrappers).

[0118] The ratio of the mass of the first aerosol generating substrate to the mass of the second aerosol generating substrate may be 2 or more, 2.5 or more, or 3 or more.

[0119] The ratio of the mass of the first aerosol generating substrate to the mass of the second aerosol generating substrate may be 4.5 or less, 4 or less, or 3.5 or less.

[0120] The total mass of the first aerosol generating substrate and the second aerosol generating substrate may be 1400 milligrams or more, 1600 milligrams or more, or 1800 milligrams or more.

[0121] The total mass of the first aerosol generating substrate and the second aerosol generating substrate may be 2400 milligrams or less, 2200 milligrams or less, or 2000 milligrams or less.

[0122] The total mass of the first aerosol generating substrate and the second aerosol generating substrate may be 1400 milligrams to 2400 milligrams, 1600 milligrams to 2200 milligrams, or 1800 milligrams to 2000 milligrams.

[0123] The ratio of the mass of one or more plant components in the first aerosol-generating substrate to the mass of one or more plant components in the second aerosol-generating substrate may be 5 or more, 6 or more, or 7 or more.

[0124] The ratio of the mass of one or more plant components in the first aerosol-generating substrate to the mass of one or more plant components in the second aerosol-generating substrate may be 9.5 or less, 8.5 or less, or 7.5 or less.

[0125] The ratio of the length of the first aerosol generating substrate to the length of the second aerosol generating substrate may be 1.5 or greater, 2 or greater, or 2.5 or greater.

[0126] The ratio of the length of the first aerosol generating substrate to the length of the second aerosol generating substrate may be 3 or less, 2.5 or less, or 2 or less.

[0127] The ratio of the length of the first aerosol-generating substrate to the length of the second aerosol-generating substrate may be 1.5-3, 1.5-2.5, 1.5-2, 2-3, 2-2.5, or 2.5-3.

[0128] The first aerosol generating substrate and the second aerosol generating substrate may have a combined total length of 60 mm to 100 mm, 60 mm to 90 mm, 60 mm to 80 mm, 60 mm to 70 mm, 70 mm to 100 mm, 70 mm to 90 mm, 70 mm to 80 mm, 80 mm to 100 mm, 80 mm to 90 mm, or 90 mm to 100 mm.

[0129] The first aerosol generating substrate and the second aerosol generating substrate may have a combined total length of 8 mm to 16 mm.

[0130] The 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 1.6 or greater, 2 or greater, or 2.4 or greater.

[0131] The 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 3.4 or less, 3 or less, or 2.6 or less.

[0132] The aerosol generating article may have a total length defined as the overall length of the aerosol generating article from its downstream end to its upstream end along its longitudinal axis.

[0133] The aerosol-generating article may have a total length of 60 mm or more, 70 mm or more, or 80 mm or more.

[0134] The aerosol-generating article may have a total length of 100 mm or less, 90 mm or less, 80 mm or less, or 70 mm or less.

[0135] The aerosol-generating article may have a total length of 60 mm to 100 mm, 60 mm to 90 mm, 60 mm to 80 mm, 60 mm to 70 mm, 70 mm to 100 mm, 70 mm to 90 mm, 70 mm to 80 mm, 80 mm to 100 mm, 80 mm to 90 mm, or 90 mm to 100 mm.

[0136] The aerosol-generating article may have a total length of 30 mm or more, 35 mm or more, 40 mm or more, or 45 mm or more.

[0137] The aerosol-generating article may have a total length of 80 mm or less, 70 mm or less, 60 mm or less, or 50 mm or less.

[0138] The aerosol-generating article may have a total length of 30-80 mm, 35-70 mm, 40-60 mm, 45-60 mm, 40-50 mm, 45-50 mm, or approximately 45 mm.

[0139] The aerosol-generating article may have a substantially circular cross-sectional shape.

[0140] The aerosol-generating article may have a substantially constant diameter along its entire length. The cross-sectional shape of the article may be substantially constant along its length. For example, the aerosol-generating article may have a substantially cylindrical shape along its length.

[0141] The aerosol generating article may have a diameter that varies along its length. The diameter of the aerosol generating article may increase along its length. Preferably, the diameter of the aerosol generating article at its upstream end is greater than the diameter of the aerosol generating article at its downstream end.

[0142] The aerosol-generating article may have a frustoconical shape. In other words, the aerosol-generating article may have the shape of a frustoconical base.

[0143] Advantageously, providing an aerosol generating article having a diameter at its upstream end that is larger than the diameter at its downstream end, such as an aerosol generating article with a frustoconical shape, may allow for the storage of a larger amount of aerosol generating substrate at the upstream end of the aerosol generating article without affecting the diameter of the mouth end. This may result in an increase in the amount of aerosol generating substrate stored within the aerosol generating article while maintaining a mouth end diameter that is comfortable for the user.

[0144] The diameter of the aerosol generating article at its upstream end may be 7 mm or more, 7.5 mm or more, 8 mm or more, 8.5 mm or more, 9 mm or more, 9.5 mm or more, 10 mm or more, 10.5 mm or more, 11 mm or more, or 11.5 mm or more.

[0145] The diameter of the aerosol generating article at its upstream end may be 12 mm or less, 11.5 mm or less, 11 mm or less, 10.5 mm or less, 10 mm or less, 9.5 mm or less, 9 mm or less, 8.5 mm or less, or 8 mm or less.

[0146] The diameter of the aerosol generating article at its upstream end may be 7 to 12 mm, 7.5 to 12 mm, 7.5 to 11.5 mm, 8 to 11 mm, 8.5 to 10.5 mm, 9 to 10 mm, or approximately 9.5 mm.

[0147] The diameter of the aerosol-generating article at its downstream end may be 7 mm or more, 7.5 mm or more, 8 mm or more, or 8.5 mm or more.

[0148] The diameter of the aerosol-generating article at its downstream end may be 9 mm or less, 8.5 mm or less, or 8 mm or less.

[0149] The diameter of the aerosol-generating article at the downstream end may be 7 to 9 mm, 7.5 to 8.5 mm, or approximately 8 mm.

[0150] The difference between the diameter of the aerosol-generating article at its upstream end and the diameter of the aerosol-generating article at its downstream end may be 0.5 millimeters or more, 1 millimeter or more, or 1.5 millimeters or more.

[0151] The difference between the diameter of the aerosol generating article at its upstream end and the diameter of the aerosol generating article at its downstream end may be 3 millimeters or less, 2.5 millimeters or less, or 2 millimeters or more.

[0152] The difference between the diameter of the aerosol generating article at its upstream end and the diameter of the aerosol generating article at its downstream end may be 0.5 mm to 3 mm, 0.5 mm to 2.5 mm, 1 mm to 2 mm, or approximately 1.5 mm.

[0153] The ratio of the diameter of the aerosol-generating article at its upstream end to the diameter of the aerosol-generating article at its downstream end may be 1.05 or greater, 1.1 or greater, 1.15 or greater, or 1.2 or greater.

[0154] The ratio of the diameter of the aerosol-generating article at its upstream end to the diameter of the aerosol-generating article at its downstream end may be 1.75 or less, 1.6 or less, 1.45 or less, or 1.3 or less.

[0155] The ratio of the diameter of the aerosol-generating article at its upstream end to the diameter of the aerosol-generating article at its downstream end may be 1.05 to 1.75, 1.1 to 1.6, 1.15 to 1.45, or 1.2 to 1.3.

[0156] The second aerosol-generating substrate is downstream of the first aerosol-generating substrate.

[0157] The first aerosol generating substrate may be located at the upstream end of the aerosol generating article.

[0158] The second aerosol generating substrate may be located at the downstream end of the aerosol generating article. In other words, the aerosol generating article does not have to include any components downstream of the second aerosol generating substrate. The aerosol generating article does not have to include a mouthpiece element.

[0159] The second aerosol generating substrate may be located immediately downstream of the first aerosol generating substrate. In other words, the upstream end of the second aerosol generating substrate may be in contact with the downstream end of the first aerosol generating substrate.

[0160] The upstream end of the second aerosol generating substrate may be separated from the downstream end of the first aerosol generating substrate. The 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.

[0161] The aerosol-generating article comprises a wrapper. The wrapper may surround at least one of the first aerosol-generating substrate and the second aerosol-generating substrate. Preferably, the wrapper surrounds at least a portion of the first aerosol-generating substrate and the second aerosol-generating substrate.

[0162] The wrapper may extend along only a portion of the length of the aerosol-generating article. The wrapper may extend along the entire length of the aerosol-generating article.

[0163] The wrapper may surround the first aerosol-generating substrate and the second aerosol-generating substrate. That is, the wrapper may surround the first aerosol-generating substrate along its entire length, and the wrapper may surround the second aerosol-generating substrate along its entire length.

[0164] The wrapper may include one or more of cardboard, plastic, and metal foil. The wrapper may include cellulose-based materials. The wrapper may include cellulose-based materials selected from one or more of paper, wood, cloth, natural fibers, and artificial fibers. The wrapper may include cigarette paper. The wrapper may include chipping paper.

[0165] The wrapper may extend to the downstream end of the aerosol-generating article. The wrapper may contain a sweetener. The sweetener may be located on the outer surface of the wrapper. The sweetener may be located at the downstream end of the wrapper.

[0166] The first aerosol generating substrate may be in the shape of a rod. The second aerosol generating substrate may also be in the shape of a rod.

[0167] The aerosol generating article may comprise a first aerosol generating substrate and a downstream section located downstream of the second aerosol generating substrate. The downstream section may comprise one or more hollow tubular elements.

[0168] One or more hollow tubular elements may comprise hollow tubular cooling elements. The upstream end of a hollow tubular cooling element may abut the downstream end of a second aerosol generating substrate. The hollow tubular cooling element may be a cardboard tube. The hollow tubular cooling element may contain a polymer material. Preferably, the hollow tubular cooling element comprises a hollow acetate tube.

[0169] One or more hollow tubular elements may be provided with hollow tubular support elements. One or more hollow tubular elements may be provided with hollow tubular support elements upstream of hollow tubular cooling elements. The upstream end of the hollow tubular cooling element may abut the 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 sulfuric acid paper), and polymer materials (such as low-density polyethylene (LDPE)). Preferably, the hollow tubular support element comprises a hollow acetate tube.

[0170] The downstream section may include a PLA (polylactic acid) plug. The PLA plug may contain crimped PLA. The PLA plug may be located downstream of one or more hollow tubular elements. The hollow tubular support elements may be located upstream of the PLA plug.

[0171] The aerosol generating article may include a susceptor element disposed within one or both of the first aerosol generating substrate and the second aerosol generating substrate.

[0172] As used herein, the term “susceptor” means a material that has the ability to be heated when penetrated by a fluctuating magnetic field. Susceptor elements may be formed from any material that can be inductively heated to a temperature sufficient to generate aerosols from an aerosol-generating substrate. For example, susceptor elements may include metal or carbon.

[0173] 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 solid cylindrical plug elements 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.

[0174] The aerosol generating article may include a mouthpiece element. The downstream section may also include a mouthpiece element.

[0175] 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 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 (polylactic acid) plug and the downstream end of the aerosol generating article. The mouthpiece element may extend to the downstream end of the downstream section.

[0176] The mouthpiece element may be located at the 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 an oral end filter. The mouthpiece element may be formed from a fibrous filter material. Preferably, the mouthpiece element is formed from cellulose acetate.

[0177] The aerosol generating article does not need to have a mouthpiece element. The aerosol generating article does not need to have 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 the downstream end of the aerosol generating article. Advantageously, providing an aerosol generating article without a mouthpiece element may reduce waste after use of the aerosol generating article.

[0178] An aerosol generating system may be provided in an embodiment in which one or both of the first aerosol generating substrate and the second aerosol generating substrate are configured to form an aerosol by heating rather than by combustion. The aerosol generating system may comprise an aerosol generating device and any of the aerosol generating articles disclosed herein.

[0179] The aerosol generating device may include a heating element or a part of a heating element for heating the aerosol generating article.

[0180] As used herein, the term “aerosol generator” means a device that generates an aerosol by interacting with one or both of a first aerosol-generating substrate and a second aerosol-generating substrate. In some embodiments, the aerosol generator heats one or both of the first aerosol-generating substrate and the second aerosol-generating substrate to facilitate the release of volatile compounds from the substrate.

[0181] As used herein, the term "aerosol generating system" refers to a combination of an aerosol generating device and an aerosol generating article.

[0182] The aerosol generator may include a device cavity configured to receive at least a portion of the aerosol generating article.

[0183] The aerosol generator may be equipped with a heating element.

[0184] The heating element may include a resistance heating element. The heating element may also contain an electrical resistance material.

[0185] The heating element may include a susceptor element.

[0186] If a susceptor element is provided, the aerosol generator may include an inductor coil arranged to inductively heat the susceptor element. If the aerosol generator includes a device cavity, the inductor coil may at least partially surround the device cavity.

[0187] The aerosol generator may include a controller for controlling the heating element. The aerosol generator may also include a power supply for supplying electricity to the heating element.

[0188] A non-exclusive list of non-limiting embodiments is provided below. One or more features of these embodiments may be combined with one or more features of any of the features described above, for example, one or more features of other embodiments, forms, or aspects described herein.

[0189] Example Ex1: An aerosol-generating article, The first aerosol generating substrate, A second aerosol generating substrate, which is located downstream of the first aerosol generating substrate, A wrapper enclosing at least one of a first aerosol generating substrate and a second aerosol generating substrate, One or both of the first aerosol-generating substrate and the second aerosol-generating substrate contain one or more plant components in a weight percentage of 5 percent or more. The composition of the first aerosol generating substrate and the composition of the second aerosol generating substrate are different, and An aerosol-generating article in which one or both of the first aerosol-generating substrate and the second aerosol-generating substrate contain tobacco or tobacco material.

[0190] Example Ex2: An aerosol-generating article according to Example Ex1, wherein the first aerosol-generating substrate contains one or more plant components in a weight percentage of 5% or more.

[0191] Example Ex3: An aerosol-generating article according to Example Ex1 or Ex2, wherein the first aerosol-generating substrate contains 10% by weight or more of one or more plant components.

[0192] Example Ex4: An aerosol-generating article according to any one of Examples Ex1 to Ex3, wherein the first aerosol-generating substrate contains one or more plant components in a weight of 50 percent or less.

[0193] Example Ex5: An aerosol-generating article according to any of the preceding examples, wherein the first aerosol-generating substrate contains one or more plant components in a weight percentage of 40 percent or less.

[0194] Example Ex6: An aerosol-generating article according to any of the preceding examples, wherein the second aerosol-generating substrate contains one or more plant components in a weight percentage of 1 percent or more.

[0195] Example Ex7: An aerosol-generating article according to any of the preceding examples, wherein the second aerosol-generating substrate contains 5% by weight or more of one or more plant components.

[0196] Example Ex8: An aerosol-generating article according to any of the preceding examples, wherein the second aerosol-generating substrate contains one or more plant components in a weight percentage of 20 percent or less.

[0197] Example Ex9: An aerosol-generating article according to any of the preceding examples, wherein the second aerosol-generating substrate contains one or more plant components in a weight percentage of 15 percent or less.

[0198] Example Ex10: An aerosol-generating article according to any of the preceding examples, wherein the first aerosol-generating substrate contains 50 weight percent or more of tobacco or tobacco material.

[0199] Example Ex11: An aerosol-generating article according to any of the preceding examples, wherein the first aerosol-generating substrate contains 60 weight percent or more of tobacco or tobacco material.

[0200] Example Ex12: An aerosol-generating article according to any of the preceding examples, wherein the first aerosol-generating substrate contains 100% by weight or less of tobacco or tobacco material.

[0201] Example Ex13: An aerosol-generating article according to any of the preceding examples, wherein the first aerosol-generating substrate contains 95% by weight or less tobacco or tobacco material.

[0202] Example Ex14: An aerosol generating article according to any of the preceding examples, wherein one or both of the first aerosol generating substrate and the second aerosol generating substrate contain a tobacco cut filler.

[0203] Example Ex15: An aerosol-generating article according to any of the preceding examples, wherein the second aerosol-generating substrate contains 60 weight percent or more of tobacco or tobacco material.

[0204] Example Ex16: An aerosol-generating article according to any of the preceding examples, wherein the second aerosol-generating substrate contains 65% by weight or more of tobacco or tobacco material.

[0205] Example Ex17: An aerosol-generating article according to any of the preceding examples, wherein the second aerosol-generating substrate contains 100% by weight or less of tobacco or tobacco material.

[0206] Example Ex18: An aerosol-generating article according to any of the preceding examples, wherein the second aerosol-generating substrate contains 97% by weight or less tobacco or tobacco material.

[0207] Example Ex19: An aerosol generating article according to any of the preceding examples, wherein the first aerosol generating substrate has a mass of 1000 milligrams to 2000 milligrams.

[0208] Example Ex20: An aerosol generating article according to any of the preceding examples, wherein the second aerosol generating substrate has a mass of 300 milligrams to 700 milligrams.

[0209] Example Ex21: An aerosol generating article according to any of the preceding examples, wherein the ratio of the mass of the first aerosol generating substrate to the mass of the second aerosol generating substrate is 2 or more.

[0210] Example Ex22: An aerosol generating article according to any of the preceding examples, wherein the ratio of the mass of the first aerosol generating substrate to the mass of the second aerosol generating substrate is 4 or less.

[0211] Example Ex23: An aerosol generating article according to any of the preceding examples, wherein the total mass of the first aerosol generating substrate and the second aerosol generating substrate is 1400 milligrams to 2400 milligrams.

[0212] Example Ex24: An aerosol generating article according to any of the preceding embodiments, wherein the diameter of the aerosol generating article at its upstream end is greater than the diameter of the aerosol generating article at its downstream end.

[0213] Example Ex25: An aerosol generating article according to any of the preceding examples, wherein the diameter of the aerosol generating article at the upstream end of the aerosol generating article is 7.5 millimeters or more.

[0214] Example Ex26: An aerosol generating article according to any of the preceding examples, wherein the diameter of the aerosol generating article at the upstream end of the aerosol generating article is 12 millimeters or less.

[0215] Example Ex27: An aerosol generating article according to any of the preceding examples, wherein the diameter of the aerosol generating article at the downstream end of the aerosol generating article is 7 millimeters or more.

[0216] Example Ex28: An aerosol generating article according to any of the preceding examples, wherein the diameter of the aerosol generating article at the downstream end of the aerosol generating article is 9 millimeters or less.

[0217] Example Ex29: An aerosol generating article according to any of the preceding embodiments, wherein the difference between the diameter of the aerosol generating article at its upstream end and the diameter of the aerosol generating article at its downstream end is 0.5 millimeters or more.

[0218] Example Ex30: An aerosol generating article according to any of the preceding embodiments, wherein the difference between the diameter of the aerosol generating article at its upstream end and the diameter of the aerosol generating article at its downstream end is 3 millimeters or less.

[0219] Example Ex31: An aerosol generating article according to any of the preceding embodiments, wherein the ratio of the diameter of the aerosol generating article at its upstream end to the diameter of the aerosol generating article at its downstream end is 1.05 or greater.

[0220] Example Ex32: An aerosol generating article according to any of the preceding embodiments, wherein the ratio of the diameter of the aerosol generating article at its upstream end to the diameter of the aerosol generating article at its downstream end is 1.75 or less.

[0221] Example Ex33: An aerosol generating article according to any of the preceding examples, wherein the aerosol generating article has a frustoconical shape.

[0222] Example Ex34: An aerosol generating article according to any of the preceding embodiments, wherein one or both of the first aerosol generating substrate and the second aerosol generating substrate have a frustoconical shape.

[0223] Example Ex35: An aerosol generating article according to one of the preceding examples, wherein the maximum diameter of the first aerosol generating substrate is greater than the maximum diameter of the second aerosol generating substrate.

[0224] Example Ex36: An aerosol generating article according to one of the preceding examples, wherein the length of the first aerosol generating substrate is greater than the length of the second aerosol generating substrate.

[0225] Example Ex37: An aerosol-generating article according to any of the preceding examples, wherein the first aerosol-generating substrate has a length of 45 mm or more.

[0226] Example Ex38: An aerosol generating article according to any of the preceding examples, wherein the first aerosol generating substrate has a length of 70 mm or less.

[0227] Example Ex39: An aerosol generating article according to any of the preceding examples, wherein the second aerosol generating substrate has a length of 15 millimeters or more.

[0228] Example Ex40: An aerosol generating article according to any of the preceding examples, wherein the second aerosol generating substrate has a length of 30 mm or less.

[0229] Example Ex41: An aerosol generating article according to any of the preceding examples, wherein the ratio of the length of the first aerosol generating substrate to the length of the second aerosol generating substrate is 1.5 or greater.

[0230] Example Ex42: An aerosol generating article according to any of the preceding examples, wherein the ratio of the length of the first aerosol generating substrate to the length of the second aerosol generating substrate is 3 or less.

[0231] Example Ex43: An aerosol-generating article according to any of the preceding examples, wherein the total length of the aerosol-generating article is 100 millimeters or less.

[0232] Example Ex44: An aerosol-generating article according to any of the preceding examples, wherein the total length of the aerosol-generating article is 60 millimeters or more.

[0233] Example Ex45: An aerosol-generating article according to any of the preceding examples, wherein one or more plant components comprise one or more of the following: clove, star anise, rosemary, cardamom, cinnamon, kaffir lime, peppermint, sage, chamomile, lavender, eucalyptus, ginger, dill, thyme, oregano, and cumin.

[0234] Example Ex46: An aerosol-generating article according to any of the preceding examples, wherein one or more plant components include one or more of the following: clove, star anise, rosemary, cardamom, cinnamon, peppermint, kaffir lime, peppermint, sage, chamomile, and lavender.

[0235] Example Ex47: An aerosol-generating article according to any of the preceding examples, wherein one or more plant components include one or more of clove, star anise, rosemary, cardamom, cinnamon, and kaffir lime.

[0236] Example Ex48: An aerosol-generating article according to any of the preceding examples, wherein one or more plant components include one or more of clove, star anise, and rosemary.

[0237] Example Ex49: An aerosol generating article according to any of the preceding embodiments, wherein the first aerosol generating substrate is located at the upstream end of the aerosol generating article.

[0238] Example Ex50: An aerosol generating article according to any of the preceding examples, wherein the second aerosol generating substrate is located at the downstream end of the aerosol generating article.

[0239] Example Ex51: An aerosol generating article according to any of the preceding embodiments, wherein a wrapper surrounds at least a portion of a first aerosol generating substrate and at least a portion of a second aerosol generating substrate.

[0240] Example Ex52: An aerosol generating article according to one of the preceding embodiments, wherein a wrapper surrounds a first aerosol generating substrate and a second aerosol generating substrate.

[0241] Herein, the present invention will be further described with reference to the attached drawings, for illustrative purposes only. [Brief explanation of the drawing]

[0242] [Figure 1] Figure 1 is a schematic cross-sectional view of a first embodiment of an aerosol-generating article according to the present disclosure. [Figure 2] Figure 2 is a schematic cross-sectional view of a second embodiment of the aerosol-generating article according to the present disclosure. [Figure 3] Figure 3 is a schematic cross-sectional view of a third embodiment of the aerosol-generating article according to the present disclosure. [Figure 4] Figure 4 is a schematic cross-sectional view of a first embodiment of the aerosol generating system according to the present disclosure, the aerosol generating system comprising the aerosol generating article and aerosol generating device shown in Figure 3. [Modes for carrying out the invention]

[0243] Figure 1 shows a schematic cross-sectional view of the aerosol generating article 100. The aerosol generating article 100 has a substantially cylindrical shape along its length. The aerosol generating article 100 comprises a first aerosol generating base 102. In the embodiment of Figure 1, the first aerosol generating base 102 is in the shape of a cylindrical rod. The aerosol generating article 100 also comprises a second aerosol generating base 104. In the embodiment of Figure 1, the second aerosol generating base 104 is in the shape of a cylindrical rod.

[0244] The longitudinal axis 106 extends centrally along the longitudinal axis of the aerosol generating article 100. The first aerosol generating substrate 102 and the second aerosol generating substrate 104 are arranged end-to-end along the longitudinal axis 106. The second aerosol generating substrate 104 is positioned downstream of the first aerosol generating substrate 102. In the embodiment shown in Figure 1, the first aerosol generating substrate 102 and the second aerosol generating substrate 104 are arranged such that the upstream end of the second aerosol generating substrate 104 abuts against the downstream end of the first aerosol generating substrate 102.

[0245] The aerosol-generating article has an upstream end 108 and a downstream end 110.

[0246] The first aerosol generating substrate 102 has a length of 58 millimeters. The second aerosol generating substrate 104 has a length of 23 millimeters. The aerosol generating article 100 has a total length of 81 millimeters. The ratio of the length of the first aerosol generating substrate 102 to the length of the second aerosol generating substrate 104 is approximately 2.5.

[0247] The aerosol generating article 100 has a wrapper 112. The wrapper 112 surrounds the first aerosol generating substrate 102 and the second aerosol generating substrate 104. The wrapper 112 is made of chipping paper. The wrapper 112 does not extend beyond the upstream end 108 and the downstream end 110 of the aerosol generating article 100.

[0248] The first aerosol-generating substrate 102 contains one or more plant components. In the example shown in Figure 1, the first aerosol-generating substrate 102 contains a first plant component and a second plant component. The first aerosol-generating substrate 102 contains 30 weight percent of the first plant component and 5 weight percent of the second plant component. The first aerosol-generating substrate 102 contains 65 weight percent tobacco.

[0249] The second aerosol-generating substrate 104 contains one or more plant components. In the example shown in Figure 1, the second aerosol-generating substrate 104 contains a third plant component. The second aerosol-generating substrate 104 contains 15 weight percent of the third plant component. The second aerosol-generating substrate 104 contains 85 weight percent tobacco.

[0250] 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 approximately 3.2.

[0251] In the aerosol generating article 100 shown in Figure 1, the aerosol generating article 100 has a substantially constant diameter along its entire length. The diameter of the aerosol generating article 100 is substantially the same along its length from the upstream end 108 to the downstream end 110. The diameter of the aerosol generating article 100 may be between 7 millimeters and 12 millimeters. In the embodiment shown in Figure 1, the diameter of the aerosol generating article 100 is 8 millimeters.

[0252] During use, the user ignites the aerosol generating article 100 at its upstream end 108. The aerosol generating article 100 burns from the upstream end 108 and then burns toward the downstream end 110. Aerosols are generated as the first aerosol generating substrate 102 burns. The aerosols generated by the combustion of the first aerosol generating substrate 102 pass downstream through the second aerosol generating substrate 104. When the first aerosol generating substrate 102 is substantially burned, the second aerosol generating substrate 104 begins to burn. The user inhales any aerosols generated during the combustion of the first aerosol generating substrate 102 and the second aerosol generating substrate 104 by sucking on the downstream end 110 of the aerosol generating article 100.

[0253] Figure 2 shows a schematic cross-sectional view of the aerosol generating article 200. The aerosol generating article 200 comprises a first aerosol generating substrate 202 and a second aerosol generating substrate 204.

[0254] The longitudinal axis 206 extends centrally along the longitudinal axis of the aerosol generating article 200. The first aerosol generating substrate 202 and the second aerosol generating substrate 204 are arranged end-to-end along the longitudinal axis 206. The second aerosol generating substrate 204 is positioned downstream of the first aerosol generating substrate 202. In the embodiment shown in Figure 2, the first aerosol generating substrate 202 and the second aerosol generating substrate 204 are arranged such that the upstream end of the second aerosol generating substrate 204 abuts against the downstream end of the first aerosol generating substrate 202.

[0255] The aerosol-generating article 200 has an upstream end 208 and a downstream end 210.

[0256] The first aerosol generating substrate 202 has a length of 58 millimeters. The second aerosol generating substrate 204 has a length of 23 millimeters. The aerosol generating article 200 has a total length of 81 millimeters. The ratio of the length of the first aerosol generating substrate 202 to the length of the second aerosol generating substrate 204 is approximately 2.5.

[0257] The aerosol generating article 200 has a wrapper 212. The wrapper 212 surrounds the first aerosol generating substrate 202 and the second aerosol generating substrate 204. The wrapper 212 is equipped with chipping paper. The wrapper 212 does not extend beyond the upstream end 208 and the downstream end 110 of the aerosol generating article 200.

[0258] A first aerosol-generating substrate 202, and one or more plant components. In the example of Figure 2, the first aerosol-generating substrate 202 comprises a first plant component and a second plant component. The first aerosol-generating substrate 202 comprises 30 weight percent of the first plant component and 5 weight percent of the second plant component. The first aerosol-generating substrate 202 contains 65 weight percent tobacco.

[0259] A second aerosol-generating substrate 204, one or more plant components. In the example of Figure 2, the second aerosol-generating substrate 204 contains a third plant component. The second aerosol-generating substrate 204 contains 15 weight percent of the third plant component. The second aerosol-generating substrate 204 contains 85 weight percent of tobacco.

[0260] 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 approximately 3.2.

[0261] The aerosol-generating article 200 has a truncated cone shape.

[0262] In the aerosol generating article 200 shown in Figure 2, the diameter of the aerosol generating article 200 changes along its length. In this embodiment, the diameter of the aerosol generating article 200 increases along its length from the upstream end 208 to the downstream end 210. The diameter of the aerosol generating article 200 at the upstream end 208 is greater than the diameter of the aerosol generating article 200 at the downstream end 210.

[0263] In the embodiment shown in Figure 2, the diameter of the aerosol generating article 200 at the downstream end 210 is 8 millimeters, and the diameter of the aerosol generating article 200 at the upstream end 210 is 9.5 millimeters.

[0264] During use, the user ignites the aerosol generating article 200 at its upstream end 208. The aerosol generating article 200 burns from the upstream end 208 and then burns toward the downstream end 210. Aerosols are generated as the first aerosol generating substrate 202 burns. The aerosols generated by the combustion of the first aerosol generating substrate 202 pass downstream through the second aerosol generating substrate 204. When the first aerosol generating substrate 202 is substantially burned, the second aerosol generating substrate 204 begins to burn. The user inhales any aerosols generated during the combustion of the first aerosol generating substrate 202 and the second aerosol generating substrate 204 by sucking on the downstream end 210 of the aerosol generating article 200.

[0265] Figure 3 shows a schematic cross-sectional view of the aerosol generating article 300. The aerosol generating article 300 has a substantially cylindrical shape along its length. The aerosol generating article 300 has a diameter of 7 millimeters. The aerosol generating article 300 has a total length of 45 millimeters.

[0266] The aerosol generating article 300 comprises a first aerosol generating substrate 302. In the embodiment shown in 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 embodiment shown in Figure 3, the second aerosol generating substrate 304 is in the shape of a cylindrical rod.

[0267] The second aerosol generating substrate 304 is positioned downstream of the first aerosol generating substrate 302. In the embodiment shown in Figure 3, the first aerosol generating substrate 302 and the second aerosol generating substrate 304 are positioned such that the upstream end of the second aerosol generating substrate 304 abuts against the downstream end of the first aerosol generating substrate 302.

[0268] The first aerosol generating substrate 302 has a length of approximately 3.4 millimeters. The second aerosol generating substrate 304 has a length of approximately 8.6 millimeters. The first aerosol generating substrate 302 and the second aerosol generating substrate 304 have a combined total length of approximately 12 millimeters.

[0269] The aerosol-generating article 300 has an upstream end 308 and a downstream end 310.

[0270] The first aerosol generating substrate 302 contains one or more plant components. In the example shown in Figure 3, the first aerosol generating substrate 302 contains a first plant component and a second plant component. The first aerosol generating substrate 302 contains 30 weight percent of the first plant component and 5 weight percent of the second plant component. The first aerosol generating substrate 302 contains 65 weight percent tobacco.

[0271] The second aerosol-generating substrate 304 contains one or more plant components. In the example shown in Figure 3, the second aerosol-generating substrate 304 contains a third plant component. The second aerosol-generating substrate 304 contains 15 weight percent of the third plant component. The second aerosol-generating substrate 304 contains 85 weight percent tobacco.

[0272] 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 approximately 3.2.

[0273] The aerosol generating article 300 includes 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 against the downstream end of the second aerosol generating substrate 304.

[0274] The downstream section 306 comprises a first hollow tubular element 312, a second hollow tubular element 314, and an end filter 316.

[0275] The second hollow tubular element 314 is located downstream of the first hollow tubular element 312. The first hollow tubular element 312 is a hollow acetate pipe. The second hollow tubular element 314 is a hollow acetate pipe. The wall thickness of the second hollow tubular element 314 is smaller than the wall thickness of the first hollow tubular element 312.

[0276] 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 contains cellulose acetate.

[0277] The longitudinal axis 320 extends centrally along the longitudinal axis of the aerosol generating 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.

[0278] The upstream element 318, the first aerosol generating substrate 302, the second aerosol generating substrate 304, and the first hollow tubular element 312 and the second hollow tubular element 314 are surrounded by the first wrapper 322. The first wrapper 322 does not surround the mouth end filter 316. The first wrapper 322 is made of paper.

[0279] The second hollow tubular element 314 and the mouth end filter 316 are surrounded by a second wrapper 324. The second wrapper 324 overlaps with a portion of the first wrapper 322. The second wrapper 324 is made of paper.

[0280] Neither the first wrapper 322 nor the second wrapper 324 extends beyond the upstream end 308 and downstream end 310 of the aerosol-generating article 300.

[0281] The aerosol generating article 300 includes a susceptor element 326. The susceptor element 326 is positioned radially centrally and is located within the first aerosol generating substrate 202 and the second aerosol generating substrate 204. The elongated susceptor element 326 is in thermal contact with the first aerosol generating substrate 302 and the second aerosol generating substrate 304, so 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 located within a fluctuating electromagnetic field and is inductively heated.

[0282] The second hollow tubular element 314 includes a ventilation zone 328 located 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 substantially perpendicular to the longitudinal axis 320 of the aerosol generating article 300. The ventilation holes 322 extend through both the first wrapper 322 and the second wrapper 324 in a direction perpendicular to the longitudinal axis 320.

[0283] The mouth end filter 316 is located at the downstream end of article 300. The mouth end filter 316 abuts against the downstream end of the second hollow tubular element 314. The mouth end filter 316 comprises low-density cellulose acetate filter segments.

[0284] Figure 4 shows a schematic cross-sectional view of a portion of an aerosol generating system 500, which includes the aerosol generating article 300 and the aerosol generating device 400 shown in Figure 3.

[0285] The aerosol generator 400 includes a device cavity 402. The device cavity 402 is configured to receive at least a portion 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 can be inserted into the device cavity 402 through the open end of the device cavity 402.

[0286] The aerosol generator 400 has an inductor coil 404 that surrounds the device cavity 402 and also 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 fluctuating magnetic field within the device cavity 402 that interacts with the susceptor element 326 to induce heating of the susceptor element 326.

[0287] The aerosol generator 400 includes a power supply (not shown) and control electronic equipment (not shown) arranged to supply power to an inductor coil 404 to generate a fluctuating magnetic field within the device cavity 402 and inductively heat the susceptor element 326.

[0288] During use, the user inserts the aerosol generating article 300 into the device cavity 402 of the aerosol generator 400 and then activates the aerosol generator 400. Activating the aerosol generator activates the inductor coil 404. The activation of the inductor coil 404 may be performed manually, or it may occur automatically in response to the user inhaling the aerosol generating article 300 while it is inserted into the device cavity 402. Activating the inductor coil 404 increases the temperature of the susceptor element 326 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 aerosols. The user inhales some aerosol generated from the heating of the first aerosol generating substrate 302 and the second aerosol generating substrate 304 by sucking on the mouth-end filter 316 of the aerosol generating article 300.

[0289] For the purposes of this specification and the appended claims, unless otherwise indicated, all numbers representing amounts, quantities, percentages, etc., are understood to be modified in all cases by the term “approximately.” Furthermore, all ranges include the disclosed maximum and minimum points and any intermediate ranges within them, which may or may not be specifically listed herein. Thus, in this context, the number A is understood as A ± 10%. In this context, the number A may be considered to include a number within the general standard error of the measurement of the characteristic that the number A modifies. In some examples used in the appended claims, the number A may deviate by the percentages listed above, as long as the amount of deviation from A does not substantially affect the fundamental and novel characteristics of the invention described in the claims. Furthermore, all ranges include the disclosed maximum and minimum points and any intermediate ranges within them, which may or may not be specifically listed herein.

Claims

1. Aerosol-generating article, The first aerosol generating substrate, A second aerosol generating substrate, which is located downstream of the first aerosol generating substrate, The system comprises a wrapper surrounding at least one of the first aerosol generating substrate and the second aerosol generating substrate, The first aerosol generating substrate contains one or more plant components, and the second aerosol generating substrate contains one or more plant components. One or both of the first aerosol generating substrate and the second aerosol generating substrate contain 5% by weight or more of one or more of the plant components, The composition of the first aerosol generating substrate and the composition of the second aerosol generating substrate are different, and An aerosol generating article in which one or both of the first aerosol generating substrate and the second aerosol generating substrate contain tobacco or tobacco material.

2. The aerosol generating article according to claim 1, wherein the first aerosol generating substrate contains 5% by weight or more of one or more of the plant components.

3. The aerosol generating article according to claim 1 or 2, wherein the second aerosol generating substrate contains 1% by weight or more of one or more of the plant components.

4. The aerosol generating article according to any one of claims 1 to 3, wherein the first aerosol generating substrate contains 50% by weight or more of tobacco or tobacco material.

5. The aerosol generating article according to any one of claims 1 to 4, wherein the second aerosol generating substrate contains 60% by weight or more of tobacco or tobacco material.

6. The aerosol generating article according to any one of claims 1 to 5, wherein the first aerosol generating substrate has a mass of 1,000 milligrams to 2,000 milligrams.

7. The aerosol generating article according to any one of claims 1 to 6, wherein the second aerosol generating substrate has a mass of 300 milligrams to 700 milligrams.

8. The aerosol generating article according to any one of claims 1 to 7, wherein the ratio of the mass of the first aerosol generating substrate to the mass of the second aerosol generating substrate is 2 or more.

9. An aerosol generating article according to any one of claims 1 to 8, wherein the diameter of the aerosol generating article at its upstream end is greater than the diameter of the aerosol generating article at its downstream end.

10. The aerosol generating article according to any one of claims 1 to 9, wherein the aerosol generating article has a frustoconical shape.

11. The aerosol generating article according to any one of claims 1 to 10, wherein the length of the first aerosol generating substrate is greater than the length of the second aerosol generating substrate.

12. The aerosol generating article according to claim 11, wherein the ratio of the length of the first aerosol generating substrate to the length of the second aerosol generating substrate is 1.5 or more.

13. The aerosol generating article according to any one of claims 1 to 12, wherein the one or more plant components include one or more of the following: clove, star anise, rosemary, cardamom, cinnamon, kaffir lime, peppermint, sage, chamomile, lavender, eucalyptus, ginger, dill, thyme, oregano, and cumin.

14. The aerosol generating article according to any one of claims 1 to 13, wherein the first aerosol generating substrate is located at the upstream end of the aerosol generating article.

15. The aerosol generating article according to any one of claims 1 to 14, wherein the wrapper surrounds the first aerosol generating substrate and the second aerosol generating substrate.

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