Aerosol-generating articles that cannot be reinserted after use in an aerosol-generating device

Abstract

The aerosol-generating article (2) can be used in an aerosol-generating device (1) including a heating chamber (7) and includes a wrapper (4) containing an aerosol-generating substrate (8), the wrapper (4) including a deformable periphery (5) configured to be deformed from a first shape to a second shape after being inserted into the heating chamber (7) and heated to a heating temperature during aerosol generation.

Description

[Technical field]

[0001] The present invention relates to an aerosol-generating article intended for use in an aerosol generating device. [Background technology]

[0002] Some aerosol-generating devices include a heating chamber arranged to receive an aerosol-generating article (or consumable) that includes a wrapper that contains a "solid" aerosol-generating substrate, the heating chamber being arranged to heat the aerosol-generating substrate to generate, in the presence of air, an aerosol that can be inhaled by a user during a vaping session.

[0003] The present invention more specifically relates to aerosol-generating articles (or consumables) that include a "solid" aerosol-generating substrate (e.g., a tobacco stick), optionally similar to a conventional cigarette. In the following description, the term "aerosol-generating substrate" is used to refer to any solid material that can be aerosolized in air to form an aerosol.

[0004] The aerosol-generating substrate may include one or more of nicotine, tobacco materials, cannabinoids, polyols, caffeine, or other active ingredients. The active ingredients may be carried by a carrier, which may include, for example, propylene glycol or glycerin. Flavorings may also be present in the aerosol-generating material and may include, for example, ethyl vanillin (vanilla), menthol, isoamyl acetate (banana oil), and the like.

[0005] Additionally, in the following description, the term "aerosol" may also include a suspension of a substance as one or more of solid particles, liquid droplets, and gas. Such a suspension may be in a gaseous state, including air. Aerosol herein may generally refer to or include a vapor, and may include one or more components of an aerosol-generating material.

[0006] The above-mentioned aerosol-generating articles (or consumables) are intended for single use in an aerosol-generating device called a "T-vapor (or non-combustion heating (or "HnB") device". Reusing such an aerosol-generating article may result in insufficient flavor and vapor formation, as well as decomposition in the heating chamber, causing device failure. Since the shape and size of the aerosol-generating article remain the same before and after use, it is not always immediately clear to the user whether it is used or unused. Furthermore, once the user has finished using the aerosol-generating article (after a vaping session), they often remove it from the heating chamber and return it to the packaging together with the unused aerosol-generating article until they can dispose of it responsibly. Thus, it is the color of the aerosol-generating article that allows the user to distinguish it from an unused aerosol-generating article, which may be difficult to distinguish if the aerosol-generating article is not completely consumed or if the lighting is unfavorable. Summary of the Invention [Problem to be solved by the invention]

[0007] Therefore, the present invention aims to prevent the reinsertion of an aerosol-generating article that has previously been used even partially within the heating chamber of an aerosol-generating device that defines a T-vapor device. [Means for solving the problem]

[0008] The proposed invention provides embodiments of aerosol-generating articles intended for use in an aerosol-generating device that includes a heating chamber and that includes a wrapper containing an aerosol-generating substrate.

[0009] The aerosol-generating article is characterized in that it includes a deformable periphery configured to be transformed from a first cross-sectional shape to a second cross-sectional shape after the wrapper is inserted into a heating chamber and heated to a heating temperature during aerosol generation, more specifically after being removed from the heating chamber.

[0010] The invention also provides an aerosol generation system comprising an aerosol generating device including a heating chamber and an aerosol generating article including a wrapper containing an aerosol-generating substrate, the wrapper including a deformable periphery configured to be deformed from a first cross-sectional shape to a second cross-sectional shape after being heated to a heating temperature in the heating chamber during aerosol generation, and more particularly after being removed from the heating chamber.

[0011] The first cross-sectional shape corresponds to the cross-sectional shape of the heating chamber. Thus, the aerosol-generating article can be inserted into the heating chamber. The second cross-sectional shape does not correspond to the cross-sectional shape of the heating chamber. Thus, the aerosol-generating article cannot be reinserted into the heating chamber after being removed because the second cross-sectional shape does not match the cross-sectional shape of the heating chamber.

[0012] According to the invention, when the aerosol-generating article is removed from the heating chamber, the first cross-sectional shape of its deformable periphery can change, as allowed by its own properties, to a second cross-sectional shape that was not possible inside the heating chamber. The second cross-sectional shape assumed by the deformable periphery outside the heating chamber thus prevents the aerosol-generating article from being reinserted into the heating chamber, in particular because the second cross-sectional shape of the periphery no longer corresponds to (i.e. no longer fits) the cross-sectional shape of the heating chamber.

[0013] In the context of the present invention, the term "periphery" refers to a portion of an aerosol-generating article that extends along the entire periphery or part of the periphery of a surface of the aerosol-generating article.

[0014] Embodiments of the aerosol-generating article may include other features, considered separately or in combination, as defined below. The deformable periphery is preferably configured to expand from the first cross-sectional shape to the second cross-sectional shape in at least one direction perpendicular to the longitudinal direction of the aerosol-generating article. Preferably, the deformable periphery is configured to expand radially. Preferably, the deformable periphery is configured to expand in multiple radial directions perpendicular to the longitudinal direction of the aerosol-generating article. For example, if the first cross-sectional shape is substantially circular, the second cross-sectional shape may be non-circular, e.g. elliptical. As a result of this expansion, the aerosol-generating article has a dimension in the at least one direction that is greater than a dimension, e.g. a diameter, of the heating chamber of the aerosol generating device, thus preventing reinsertion of the aerosol-generating article into the heating chamber. This is because the second cross-sectional shape is no longer compatible with the cross-sectional shape of the heating chamber. In a first embodiment, the deformable peripheral portion may comprise a shape memory material having a shape memory effect at a transition temperature above a predetermined ambient temperature. The material may be a shape memory material that has a shape memory effect at a transition temperature between 50°C and 200°C (preferably between 60°C and 200°C). The shape memory material may comprise at least one metal. The shape memory material may be arranged in the form of a sheet or at least one wire or a combination thereof. In the case of a sheet, the combination may have a flat or tubular configuration. In the case of a wire, the combination may have a ring or an open or closed loop configuration. In a second embodiment, the deformable periphery may comprise a bimetallic element. In this second embodiment, the deformable periphery may be arranged in the form of a sheet, for example having a flat or tubular configuration. The deformable periphery may extend along a portion of the axial length of the wrapper. The deformable periphery may extend from an end of the wrapper. The aerosol-generating article may be in the form of a rod, plate or otherwise a card. The plate may be flat, pleated, corrugated or U-shaped. The aerosol-forming substrate may comprise a tobacco material or at least one aerosol-forming agent. The aerosol-forming agent may be a polyol. The amount of aerosol-forming agent is preferably 5-30% by weight of the aerosol-forming substrate. The aerosol-forming substrate may further comprise a binder. The binder may, for example, comprise a gum (e.g. guar gum) or a polysaccharide. The aerosol-forming substrate may further comprise cellulose fibres or another filler.

[0015] In other words, the present invention relates to an aerosol-generating article for use in an aerosol-generating device, comprising a wrapper forming a cavity for accommodating an aerosol-generating substrate, the wrapper comprising a deformable periphery configured to be deformed from a first shape to a second shape upon heating to a temperature of at least 50°C.

[0016] In the first shape, the deformable periphery may be, for example, circular or arcuate.

[0017] In the second shape, the deformable periphery may for example be at least partially straight or non-circular, in particular angular.

[0018] The material of the deformable periphery can be a shape memory material that has a shape memory effect at a transition temperature between 50°C and 200°C, preferably between 60°C and 200°C.

[0019] The proposed invention also provides an embodiment of a method intended to use an aerosol generating device comprising a heating chamber.

[0020] This method is - at least partially inserting an aerosol-generating article as described above into a heating chamber; - heating an aerosol-generating article in a heating chamber at a heating temperature to generate an aerosol; - removing the aerosol-generating article from the aerosol generating device to allow the deformable peripheral portion to deform to a second shape; In particular, the second shape of the deformable periphery of the aerosol-generating article is such that the aerosol-generating article can no longer be inserted into the heating chamber.

[0021] The invention and its advantages will be better understood on reading the following detailed description, given by way of non-limiting example only and described with reference to the accompanying drawings, in which: [Brief description of the drawings]

[0022] [Figure 1] 1 illustrates, diagrammatically and functionally, an example of an embodiment of an aerosol generating device into which an example of an embodiment of an aerosol generating article according to the present invention is inserted. [Diagram 2] 1 shows a schematic perspective view of one example of an embodiment of an aerosol-generating article according to the present invention prior to use during a vaping session; [Diagram 3] 3 shows a schematic perspective view of the aerosol-generating article of FIG. 2 after use during a vaping session and after removal from an aerosol-generating device. [Figure 4] 4 shows a schematic front view of the deformable peripheral portion of the aerosol-generating article of FIG. 3; [Diagram 5] A schematic front view of a deformable peripheral portion having a star-shaped cross-sectional shape is shown after use during a vaping session and after removal from an aerosol generating device. [Figure 6] 2 illustrates, diagrammatically and functionally, an example of an algorithm implementing the method according to the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] The present invention aims to provide an aerosol generating article 2 that is intended to be inserted into an aerosol generating device 1 for use to enable a user to perform a vaping session, but which cannot be reinserted into the aerosol generating device 1 after it has been used and removed from the aerosol generating device 1.

[0024] In the following description, the aerosol generating device 1 is considered to be (or constitute) an electronic cigarette (or e-cigarette or personal vaporizer). However, the aerosol generating device 1 may be of another type, so long as it is capable of converting an aerosol-generating substrate contained in an aerosol-generating article in solid form into an aerosol (optionally at temperatures close to room temperature). More generally, the present invention relates to any type of T-vapor (or non-combustion heating (or HnB)) device that includes a heater for heating an aerosol-generating substrate in solid form contained in an aerosol-generating article.

[0025] Furthermore, in the following description, it is assumed that the aerosol-generating article (or consumable) 2 is a tobacco stick. The aerosol-generating substrate therefore comprises at least a tobacco material (and optionally tobacco cut). However, the present invention is not limited to this type of aerosol-generating article.

[0026] It should be recalled that "aerosol-generating substrate" is used to refer to a solid material that is aerosolizable in air to form an aerosol. The aerosol-generating substrate may include homogenized tobacco material, which may include an aerosol-forming agent and nicotine, cannabinoids, caffeine, etc. The aerosol-forming agent may include a polyhydric alcohol, such as glycerin and / or polypropylene glycol, or water. The tobacco material may be cast sheets, laminated tobacco or tobacco paper, and / or flavorings (e.g., menthol). The aerosol-generating substrate may include tobacco cut filler, other fillers such as cellulose pulp, and other ingredients such as sugars, starches, gums, acids, cellulose derivatives, etc.

[0027] It is envisioned that the term "aerosol" may include a suspension of a substance as one or more of solid particles, liquid droplets, and gas, and that such a suspension may be within a gas, including air.

[0028] As shown in FIG. 1, an aerosol generating device 1 in which an aerosol generating article 2 according to the present invention can be used includes at least a heating chamber 7 defined within a casing of an aerosol generating unit 3 controlled by a controller 6 .

[0029] The casing (and thus its heating chamber 7) is arranged to receive an aerosol-generating article 2 (here a tobacco stick) comprising a wrapper 4 containing an aerosol-generating substrate 8 through an opening 9, the access of which is optionally controlled by a closure element. The internal shape of the heating chamber 7 is thus similar to or complementary to the shape of the aerosol-generating article 2 at least along the length of the heating chamber 7. For example, this shape may be in the form of a rod, plate or otherwise card. In the non-limiting example shown in Figures 1-3, the shape of the aerosol-generating article 2 (and thus the shape of the heating chamber 7) is that of a cylindrical rod.

[0030] The heating chamber 7 is arranged to heat (without burning) the aerosol-generating substrate 8 mixed with air, turning it into an aerosol that can be inhaled by the user through successive draws (or "puffs" or inhalation phases) during a vaping session.

[0031] As shown in the non-limiting example of Figure 1, the casing and its heating chamber 7 communicate with an air outlet 10 of an air flow passage 11, which is supplied with air originating from at least one air inlet 12 thereof. This allows mixing of the aerosol-generating substrate 8 with the air. In a possible embodiment, the air inlet 12 may be formed as an enlargement of the opening 9, and the heating chamber 7 may include a longitudinal groove that allows air to move from the opening to the end of the aerosol-generating substrate 8 within the heating chamber 7.

[0032] This heating is performed by a heater 14 supplied with electrical energy originating from a power source 15. This heater 14 can belong to the aerosol generation unit 3.

[0033] In the non-limiting example shown in FIG. 1 , the heater 14 surrounds the casing and its heating chamber 7, and thus surrounds and heats a part of the aerosol-generating article 2 (more precisely, its aerosol-generating substrate 8). For example, the heater 14 can be a thin-film heater wrapped around the outer surface of the casing (of the heating chamber 7) in order to heat its side walls and at least a part of the internal volume. However, in a variant (not shown), the heater 14 can be a coil associated with a susceptor or a resistive coil heater. In a first alternative, the coil is arranged to generate an electromagnetic field when supplied with an electric current, and the susceptor is arranged to convert this electromagnetic field into heat. This susceptor can be a foil of the wrapper 4 of the aerosol-generating article 2 surrounding the aerosol-generating substrate 8 or a foil, strip and / or particles located inside the aerosol-generating substrate 8. In other variants of the embodiment (not shown), the heater 14 can be located inside the aerosol-generating article 2 or inside the heating chamber 7.

[0034] For example, the heater 14 can heat the aerosol-generating substrate 8 to an aerosol-generating temperature of 50°C to 350°C, preferably 200°C to 320°C.

[0035] The power supply 15 is housed in a body 16 of the aerosol generating device 1. In the non-limiting example shown in FIG.

[0036] Also for example, power source 15 may be a rechargeable battery, in which case body 16 may include an electrical connector to which a charger cable may be connected during a charging session of rechargeable battery 15.

[0037] The electrical energy supplied to the heater 14 during a vaping session is controlled by a controller 6. The controller (or control unit) 6 may include at least a processor and memory arranged to perform operations for controlling the aerosol generation unit 3 (and in particular its heater 14) during a vaping session, and also for controlling the power source 15 during a possible charging session.

[0038] For example, a processor may be a digital signal processor (or DSP), or an application specific integrated circuit (ASIC), or a field programmable gate array (FPGA). More generally, a processor may include multiple integrated (or printed) circuits or several integrated (or printed) circuits connected between them via wired or wireless connections. The term "integrated (or printed) circuit" herein refers to any type of device capable of performing at least one electrical or electronic operation.

[0039] Also, for example, the memory may be a random access memory (RAM), but the memory may be any type of device arranged to store program instructions for a processor.

[0040] Generally speaking, the functions of the controller (or control unit) 6 may be performed through the operation of program logic, through dedicated logic, through the interaction of program control and dedicated logic, or even manually (by a user). These functions may be provided through the use of dedicated hardware and hardware capable of executing software in conjunction with appropriate software.

[0041] As shown in the non-limiting example of FIG. 1, the controller (or control unit) 6 (and in particular its processor and memory) may be fixed on a printed circuit board (or PCB) 17 (here housed within the body 16).

[0042] In addition to its processor and memory, the controller (or control unit) 6 may also include an input interface, a mass memory (particularly for storing intermediate data generated during its calculations and processing) and an output interface for delivering messages and instructions to control at least the aerosol generation unit 3 (particularly its heater 14) and electronic components (such as switches) that supply power (stored in the power supply 15) to the aerosol generation unit 3.

[0043] As also shown, the aerosol-generating article 2 may include a filter 13 at the mouth end of the aerosol-generating article 2, at least a portion of which forms the mouthpiece of the aerosol-generating article 2. The filter 13 may include several filter segments (e.g., plain cellulose acetate fiber segments and / or a central hole segment) and optionally a cavity formed in a paper wrapper adjacent one or two of the filter segments. The aerosol-generating article 2 may also further include a cooling or spacer element disposed between the aerosol-generating substrate 8 and the filter 13. The cooling or spacer element may be a hollow tubular element formed of paper or polymer, or a cavity (e.g., a wound paper tube) filled with a cooling material, preferably a fibrous material and / or a sheet such as a pleated polylactic acid sheet. The aerosol-generating substrate 8, the filter 13 and the spacer or cooling element are typically combined with a paper wrapper.

[0044] In accordance with the present invention, the wrapper 4 of the aerosol-generating article 2 includes a deformable peripheral portion 5 configured to deform from a first shape (as shown in Figures 1 and 2) to a second shape (as shown in Figures 3 and 4) after being inserted into a heating chamber 7 during aerosol generation, heated to a heating temperature, and subsequently cooled to a temperature below the heating temperature.

[0045] It is important to note that when heated in the heating chamber 7, the deformable periphery 5 attempts to change its first shape, but does not do so because the shape of the heating chamber 7 holds it in place. However, when the aerosol-generating article 2 is removed from the heating chamber 7, the first shape of the deformable periphery 5 can change to a second shape allowed by the properties (possibly shape memory properties) of the material that makes up the deformable periphery 5. The second shape assumed by the deformable periphery 5 thus prevents the aerosol-generating article 2 from being reinserted into the heating chamber 7. After cooling, the second shape is maintained.

[0046] For example, the deformable peripheral portion 5 may be affixed to the wrapper 4 or embedded in the wrapper 4 .

[0047] Also for example, the wrapper 4 may be made of paper or a paper and aluminum laminate.

[0048] Also, for example, in the non-limiting example of Figs. 1 and 2, the first shape of the deformable rim 5 is circular. However, it may be, for example, rectangular or square. Also, for example, in the non-limiting example of Figs. 3 and 4, the second shape (after use) of the deformable rim 5 is elliptical. However, it may be, for example, circular or approximately rectangular. More generally, the second shape is defined so as not to fit within the internal shape or cross-section of the heating chamber 7. In particular, it is preferred that the second shape is non-circular. For example, the second shape may be angular, grooved or corrugated compared to the round or curved first shape. For example, the second shape may have a substantially star-shaped or polygonal cross-sectional shape. An example of a star-shaped cross-sectional shape is shown in Fig. 5.

[0049] In a first example of embodiment, the deformable periphery 5 may comprise a shape memory material that has a shape memory effect at a transition temperature above a given ambient temperature. In other words, when the temperature is higher than the transition temperature, the shape memory effect of the shape memory material causes its shape change, which remains stable after cooling outside the heating chamber 7. The heating chamber 7 may inhibit the change in shape of the deformable periphery 5 or prevent the deformable periphery 5 from deforming or changing in shape, especially if the surface of the heating chamber 7 closely fits the deformable periphery 5 or even compresses the deformable periphery 5. When the aerosol-generating article 2 is removed from the heating chamber 7, the shape memory material alloy is allowed to assume a second shape, for example by expanding, relaxing, bending, stretching, etc., as a result of the material reaching a temperature above the transition temperature of the shape memory material. The shape of the deformable periphery 5 may start to change while in the heating chamber 7 or during removal, due to the possible presence of gaps. However, such deformation should be kept to a minimum to prevent the aerosol-generating article 2 from becoming stuck within the aerosol generating device 1 .

[0050] For example, the predetermined ambient temperature may be normally equal to 25°C.

[0051] Also, for example, the material may be a shape memory material that has a shape memory effect at a transition temperature of 50°C to 200°C, preferably 60°C to 200°C.

[0052] By way of example, the shape memory material may include at least one metal. For example, it may be an alloy, such as iron-based and copper-based shape memory alloys (or SMA), such as Ni-Ti, Fe-Mn-Si, Cu-Zn-Al and Cu-Al-Ni alloys. In particular, the material may be Ni-Ti-Cu with respective proportions equal to 45%, 50% and 5%.

[0053] As shown in the non-limiting examples of Figures 2 and 3, the shape memory material can be disposed in the form of a sheet, where the sheet can be, for example, in a flat configuration or in a tubular configuration.

[0054] However, in a variant of the embodiment, the shape memory material may be arranged in the form of at least one wire or a combination of a sheet and at least one wire. The sheet or wire may be arranged to extend over at least a portion of the circumference of the aerosol-generating article 2, preferably over at least 70% and most preferably over 100% of its circumference.

[0055] In a second example of embodiment, the deformable periphery 5 may include a bimetallic element. Bimetallic materials typically deform upon heating due to differences in thermal expansion and temperature coefficient properties of the two metals that make up the periphery. For example, the bimetallic material may be composed of any two of copper, steel, iron, or brass. Preferably, the bimetallic material may be steel and copper or steel and brass.

[0056] In this second example of embodiment, the deformable peripheral portion 5 may be arranged in the form of a sheet having a flat or tubular configuration.

[0057] 1-3, the deformable periphery 5 may extend along a portion of the axial length of the wrapper 4. For example, as shown, the deformable periphery 5 may extend from the end of the wrapper 4 opposite the flexible filter 13. However, in alternative embodiments, the deformable periphery 5 may extend along a portion of the axial length of the wrapper 4 between opposing ends of the aerosol-generating substrate 8.

[0058] The present invention can also be seen as a method directed to the use of the aerosol generating device 1.

[0059] As shown in the non-limiting example of an algorithm in Figure 5, the method includes a step 100 in which an aerosol-generating article 2 is inserted at least partially into a heating chamber 7. The method further includes a step 110 of heating the inserted aerosol-generating article 2 (by a heater 14) at a heating temperature to generate an aerosol. The method further includes a step 120 of removing the aerosol-generating article 2 from the aerosol generating device 1 to allow the deformable peripheral portion 5 to deform into a second shape.

[0060] It should be appreciated by those skilled in the art that the several block diagrams in FIGS. 1-5 represent conceptual views of illustrative components or circuitry embodying the principles of the invention herein.

[0061] The description and drawings merely illustrate the principles of the invention. It is therefore to be understood that those skilled in the art may devise various configurations that embody the principles of the invention and are within its spirit and scope, although not expressly described or shown herein. Furthermore, all examples recited herein are expressly intended to be merely for educational purposes to aid the reader in understanding the principles of the invention and the concepts contributed by the inventor to advance the art, and should be construed without limitation to such specifically recited examples and conditions. Furthermore, all statements herein reciting principles, aspects and embodiments of the invention, as well as specific examples thereof, are intended to encompass equivalents thereof.

Claims

1. 1. An aerosol-generating article (2) for use in an aerosol-generating device (1) including a heating chamber (7), the aerosol-generating article (2) comprising a wrapper (4) containing an aerosol-generating substrate (8), the wrapper (4) including a deformable periphery (5) configured to be deformed from a first cross-sectional shape to a second cross-sectional shape after being heated to a heating temperature in the heating chamber (7) during aerosol generation.

2. the first cross-sectional shape corresponds to a cross-sectional shape of the heating chamber (7); and 2. The aerosol-generating article of claim 1, wherein the second cross-sectional shape does not correspond to the cross-sectional shape of the heating chamber (7).

3. 3. An aerosol-generating article as described in claim 1 or 2, wherein the deformable peripheral portion (5) is configured to expand from the first cross-sectional shape to the second cross-sectional shape in at least one direction perpendicular to the longitudinal direction of the article (2).

4. 4. The aerosol-generating article of claim 3, wherein the deformable peripheral portion (5) is configured to expand from the first cross-sectional shape to the second cross-sectional shape in a plurality of radial directions perpendicular to a longitudinal direction of the article (2).

5. 3. An aerosol-generating article as claimed in claim 1 or 2, wherein the deformable peripheral portion (5) comprises a shape-memory material having a shape-memory effect at a transition temperature above a given ambient temperature.

6. 6. The aerosol-generating article of claim 5, wherein the material is a shape-memory material that has a shape-memory effect at a transition temperature of 50°C to 200°C.

7. The aerosol-generating article of claim 5 , wherein the shape-memory material comprises at least one metal.

8. 6. The aerosol-generating article of claim 5, wherein the shape-memory material is arranged in the form of a sheet or at least one wire, or a combination thereof.

9. 9. The aerosol-generating article of claim 8, wherein the sheet has a flat or tubular configuration.

10. 3. An aerosol-generating article according to claim 1, wherein the deformable peripheral portion (5) comprises a bimetallic element.

11. 11. An aerosol-generating article according to claim 10, wherein the deformable peripheral portion (5) is arranged in the form of a sheet having a flat or tubular configuration.

12. 3. An aerosol-generating article according to claim 1 or 2, wherein the deformable peripheral edge (5) extends along part of the axial length of the wrapper (4).

13. 3. An aerosol-generating article according to claim 1, wherein the deformable peripheral edge (5) extends from an end of the wrapper (4).

14. 3. The aerosol-generating article of claim 1 or 2, in the form of a rod or a flat plate.

15. 3. The aerosol-generating article of claim 1 or 2, wherein the aerosol-generating substrate comprises a tobacco material or at least one polyol.

16. A method of using an aerosol generating device (1) comprising a heating chamber (7), comprising at least partially inserting an aerosol generating article (2) according to claim 1 or 2 into the heating chamber (7), heating the aerosol generating article (2) at a heating temperature to generate an aerosol, and removing the aerosol generating article (2) from the aerosol generating device (1) to allow the deformable peripheral portion (5) to deform to the second cross-sectional shape.

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