WO2025056606A1

WO2025056606A1 - Article

Info

Publication number: WO2025056606A1
Application number: PCT/EP2024/075368
Authority: WO
Inventors: Leah Thomas; Marcus Hartley
Original assignee: Nicoventures Trading Ltd
Current assignee: Nicoventures Trading Ltd
Priority date: 2023-09-12
Filing date: 2024-09-11
Publication date: 2025-03-20
Anticipated expiration: 2026-03-12
Also published as: GB202313848D0

Abstract

An aerosol forming article (200) comprising a body having one or more internal surfaces defining an airflow passage, wherein the airflow passage has a non-circular cross-section, and an aerosol generating material (208, 210, 212) on the internal surface of the body.

Description

ARTICLE

Technical Field

The present invention relates to an aerosol forming article and system.

Background

Smoking articles such as cigarettes, cigars and the like burn tobacco during use to create tobacco smoke. Attempts have been made to provide alternatives to these articles that burn tobacco by creating products that release compounds without burning. Examples of such products are heating devices which release compounds by heating, but not burning, the material. The material may be for example tobacco or other non-tobacco products, which may or may not contain nicotine.

Summary

In an aspect of the present invention, an aerosol forming article is provided. The aerosol forming article comprises: a body having one or more internal surfaces defining an airflow passage, wherein the airflow passage has a non-circular crosssection; and an aerosol generating material on the internal surface of the body.

The body may be formed from a folded sheet of material. The airflow passage may have a substantially triangular cross-section. The airflow passage may have a substantially hexagonal cross-section. The one or more internal surfaces may define a honeycomb structure. The aerosol forming article may comprise a plurality of airflow passages defined by the honeycomb structure. Any of the aerosol forming articles may further comprise one or more walls defining the one or more internal surfaces. The one or more walls has a thickness of less than 2mm. The one or more walls may be interconnected panels. The aerosol generating material may comprises: a first aerosol generating material deposited on one of the interconnected panels; and a second aerosol generating material deposited on another one of the interconnected panels. The first and second aerosol generating materials may be independently heatable. Any of the aerosol forming articles may further comprise a heating element configured to generate heat by penetration with a varying magnetic field to heat the aerosol generating material. The heating element may comprise a metal or a metal alloy. The one or more walls may consist of or substantially consist of the heating element. The one or more walls may comprise the heating element. The wall may comprise: a first layer comprising the heating element; and a second layer that does not generate heat by penetration with a varying magnetic field. The first layer may be located between the aerosol generating material and the second layer. The second layer may comprise one or more materials selected from the group of materials consisting of: paper, card, paperboard, cardboard, reconstituted tobacco, and a plastics material. The body may have an elongate shape. The body may be tubular.

In yet another aspect, an aerosol forming article is provided. The aerosol forming article comprises a body having a plurality of walls, and an aerosol generating material on one of the plurality of walls. The body is moveable between a first configuration where the body is compressed and a second configuration where the body is expanded such that the plurality of walls defines at least one airflow passage therebetween.

At least one of the walls may be resilient. At least one of the walls may be rotatably coupled to another one of the walls so that they can rotate relative to each other. The at least one airflow passage may have a non-circular cross-section.

In yet another aspect, a packet of articles is provided. The packet comprises a plurality of articles as described above. At least one of the articles is in the first configuration.

The packet may further comprise a restraining component configured to hold the at least one of the articles in the first configuration.

In yet another aspect, an aerosol provision system is provided. The aerosol provision system comprises any of the above-described aerosol forming articles, and an aerosol provision device configured to heat the aerosol generating material to generate aerosol. In yet another aspect, a method for producing aerosol is provided. The method comprises inserting an article into an aerosol provision device configured to heat the aerosol generating material to generate aerosol, the article comprising: a body having a plurality of walls, wherein the body is moveable between a first configuration where the body is compressed and a second configuration where the body is expanded such that the plurality of walls defines at least one airflow passage therebetween and an aerosol generating material on one of the plurality of walls, moving the body into the second configuration, and heating, using the aerosol provision device, the article to generate aerosol.

Brief Description of the Drawings

Embodiments will now be described, by way of example only, and with reference to the accompanying drawings in which:

Fig. 1 shows a cross-sectional side view of an aerosol provision device and an article;

Fig. 2A shows a perspective side view of the article;

Fig. 2B shows a blank that can be formed into the article;

Fig. 3 shows a cross-sectional view of an article made from two straws squeezed together;

Fig. 4 shows a perspective view of an article having a honeycomb structure; and

Fig. 5 shows a series of illustration demonstrating using an article of Fig. 4.

Detailed Description

As used herein, the term “aerosol-generating material” is a material that is capable of generating aerosol, for example when heated, irradiated or energized in any other way. Aerosol-generating material may, for example, be in the form of a solid, liquid or gel which may or may not contain an active substance and/or flavourants. Aerosol-generating material may include any plant based material, such as tobacco-containing material and may, for example, include one or more of tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco or tobacco substitutes. Aerosol-generating material also may include other, non-tobacco, products, which, depending on the product, may or may not contain nicotine. Aerosolgenerating material may for example be in the form of a solid, a liquid, a gel, a wax or the like. Aerosol-generating material may for example also be a combination or a blend of materials. Aerosol-generating material may also be known as “smokable material”.

The aerosol-generating material may comprise a binder and an aerosol former. Optionally, an active and/or filler may also be present. Optionally, a solvent, such as water, is also present and one or more other components of the aerosolgenerating material may or may not be soluble in the solvent. In some embodiments, the aerosol-generating material is substantially free from botanical material. In some embodiments, the aerosol-generating material is substantially tobacco free.

The aerosol-generating material may comprise or be an “amorphous solid”. The amorphous solid may be a “monolithic solid”. In some embodiments, the amorphous solid may be a dried gel. The amorphous solid is a solid material that may retain some fluid, such as liquid, within it. In some embodiments, the aerosolgenerating material may, for example, comprise from about 50wt%, 60wt% or 70wt% of amorphous solid, to about 90wt%, 95wt% or 100wt% of amorphous solid.

The aerosol-generating material may comprise an aerosol-generating film. The aerosol-generating film may comprise or be a sheet, which may optionally be shredded to form a shredded sheet. The sheet may be a crimped sheet. The aerosolgenerating sheet or shredded sheet may be substantially tobacco free.

According to the present disclosure, a “non-combustible” aerosol provision system is one where a constituent aerosol-generating material of the aerosol provision system (or component thereof) is not combusted or burned in order to facilitate delivery of at least one substance to a user.

In some embodiments, the delivery system is a non-combustible aerosol provision system, such as a powered non-combustible aerosol provision system.

In some embodiments, the non-combustible aerosol provision system is an electronic cigarette, also known as a vaping device or electronic nicotine delivery system (END), although it is noted that the presence of nicotine in the aerosolgenerating material is not a requirement. In some embodiments, the non-combustible aerosol provision system is an aerosol-generating material heating system, also known as a heat-not-burn system. An example of such a system is a tobacco heating system.

In some embodiments, the non-combustible aerosol provision system is a hybrid system to generate aerosol using a combination of aerosol-generating materials, one or a plurality of which may be heated. Each of the aerosol-generating materials may be, for example, in the form of a solid, liquid or gel and may or may not contain nicotine. In some embodiments, the hybrid system comprises a liquid or gel aerosol-generating material and a solid aerosol-generating material. The solid aerosol-generating material may comprise, for example, tobacco or a non-tobacco product.

Typically, the non-combustible aerosol provision system may comprise a non- combustible aerosol provision device and an article, typically a consumable for use with the non-combustible aerosol provision device.

In some embodiments, the disclosure relates to consumables comprising aerosol-generating material and configured to be used with non-combustible aerosol provision devices. These consumables are sometimes referred to as articles throughout the disclosure.

In some embodiments, the non-combustible aerosol provision system, such as a non-combustible aerosol provision device thereof, may comprise a power source and a controller. The power source may, for example, be an electric power source or an exothermic power source. In some embodiments, the exothermic power source comprises a carbon substrate which may be energised so as to distribute power in the form of heat to an aerosol-generating material or to a heat transfer material in proximity to the exothermic power source.

In some embodiments, the non-combustible aerosol provision system may comprise an area for receiving the consumable, an aerosol generator, an aerosol generation area, a housing, a mouthpiece, a filter and/or an aerosol-modifying agent.

In some embodiments, the consumable for use with the non-combustible aerosol provision device may comprise aerosol-generating material, an aerosolgenerating material storage area, an aerosol-generating material transfer component, an aerosol generator, an aerosol generation area, a housing, a wrapper, a filter, a mouthpiece, and/or an aerosol-modifying agent. An aerosol generating device can receive an article comprising aerosol generating material for heating. An “article” in this context is a component that includes or contains in use the aerosol generating material, which is heated to volatilise the aerosol generating material, and optionally other components in use. A user may insert the article into the aerosol generating device before it is heated to produce an aerosol, which the user subsequently inhales. The article may be, for example, of a predetermined or specific size that is configured to be placed within a heating chamber of the device which is sized to receive the article.

With reference to Fig. 1 , an aerosol provision system 10 comprises an aerosol provision device 100 for generating aerosol from an aerosol generating material. The aerosol provision system 10 further comprises a replaceable article 110 comprising the aerosol generating material. In broad outline, the aerosol forming device 100 may be used to heat the article 110 to generate an aerosol or other inhalable medium, which is inhaled by a user of the device 100.

The aerosol forming device 100 comprises a device body 102. A housing arrangement surrounds and houses various components of the device body 102. An article aperture 104 is formed at one end of the device body 102, through which the article 110 may be inserted for heating by an aerosol generator 200.

The device 100 may also include a user-operable control element 150, such as a button or switch, which operates the device 100 when pressed. For example, a user may turn on the device 100 by operating the switch 150.

The aerosol generator 200 defines a longitudinal axis, which aligns with an axis of the article 110.

In use, the article 110 may be fully or partially inserted into the aerosol generator 200 where it may be heated by one or more components of the aerosol generator 200.

The device 100 includes an apparatus for heating aerosol-generating material. The apparatus includes an aerosol generating assembly, a controller (control circuit), and a power source. The apparatus forms part of the device body 102. The aerosol generating assembly is configured to heat the aerosol-generating material of an article 110 inserted through the article aperture 104, such that an aerosol is generated from the aerosol generating material. The power source supplies electrical power to the aerosol generating assembly, and the aerosol generating assembly converts the supplied electrical energy into heat energy for heating the aerosol-generating material. The power source may be, for example, a battery, such as a rechargeable battery or a non-rechargeable battery. Examples of suitable batteries include, for example, a lithium battery (such as a lithium-ion battery), a nickel battery (such as a nickel-cadmium battery), and an alkaline battery.

The power source may be electrically coupled to the aerosol generating assembly to supply electrical power when required and under control of the controller to heat the aerosol generating material. The control circuit may be configured to activate and deactivate the aerosol generating assembly based on a user input. The user input may be via a button press or opening a door of the device (for example, a door covering a consumable receiving receptacle). The control circuit may be configured to activate and deactivate automatically, for example on insertion of an article.

The aerosol generating assembly may comprise various components to heat the aerosol generating material via an inductive heating process. Induction heating is a process of heating an electrically conducting heating element (such as a susceptor) by electromagnetic induction. An induction heating assembly may comprise an inductive element, for example, one or more inductor coils, and a device for passing a varying electric current, such as an alternating electric current, through the inductive element. The varying electric current in the inductive element produces a varying magnetic field. The varying magnetic field penetrates a susceptor (heating element) suitably positioned with respect to the inductive element, and generates eddy currents inside the susceptor. The susceptor has electrical resistance to the eddy currents, and hence the flow of the eddy currents against this resistance causes the susceptor to be heated by Joule heating. In cases where the susceptor comprises ferromagnetic material such as iron, nickel or cobalt, heat may also be generated by magnetic hysteresis losses in the susceptor, i.e. by the varying orientation of magnetic dipoles in the magnetic material as a result of their alignment with the varying magnetic field. In inductive heating, as compared to heating by conduction for example, heat is generated inside the susceptor, allowing for rapid heating. Further, there need not be any physical contact between the inductive element and the susceptor, allowing for enhanced freedom in construction and application. With reference to Fig. 2, the article 200 has a body that has an elongate shape having a longitudinal direction. The article 200 defines an airflow passage therein. In this embodiment, the elongate shape is a triangular prism. The article 200 comprises a first wall 202, a second wall 204, and a third wall 206. The first wall 202 is coupled to the second wall 204 at an angle that is <90°. The first wall 202 is also coupled to the third wall 206 at an angle that is <90°. The second wall 204 is coupled to the third wall 206 at an angle that is <90°. In other words, the first, second, and third walls 202, 204, 206 encloses a space that defines the airflow passage. The airflow passage has a non-circular cross-section in the plane perpendicular to the longitudinal direction. In this embodiment, the airflow passage has a triangular cross-section, such as a substantially equilateral triangle.

The article 200 further comprises a first aerosol generating material 208 deposited on an internal surface of the first wall 202. The article 200 further comprises a second aerosol generating material 210 deposited on an internal surface of the second wall 204. The article 200 further comprises a third aerosol generating material 212 deposited on an internal surface of the third wall 206. The internal surfaces all define the airflow passage. The airflow passage is fluidly coupled to an outlet positioned at the at a mouth end of the article 200. The airflow passage is fluidly coupled to an inlet positioned at the at a distal end of the article 200. The distal end is opposite to the mouth end.

The first, second, and third aerosol generating materials 208, 210, 212 may be heated to generate aerosol. Each of the first, second, and third walls comprises a heating element (not shown). The heating element is configured to generate heat via induction. In other words, penetrating the heating element with a varying magnetic field results in the creation of magnetic eddy currents which in turns cause the heating element to heat up and/or generate heat. The heating element can then be used to heat the first, and/or second, and/or third aerosol generating materials to generate an aerosol therefrom. The generated aerosol is then dispersed and/or diffused into the airflow passage. A user may inhale the aerosol in the airflow passage through the mouth end.

An article having the above-described structure tends to provide more surface area for the aerosol generating material to be deposited on. As such, this tends allow for an increase amount of aerosol to be generated thereby increasing the number time the article can be used without increasing the length of the article. Moreover, the above-described structure allows for a single article to contain and/or store different aerosol generating materials, e.g. different flavours or concentrations. In some embodiments, the aerosol generating material on each of the walls may have a different flavour to each other. For example, the first wall may have mint flavour aerosol generating material, the second wall may have menthol flavour aerosol generating material, and the third wall may have strawberry flavour aerosol generating material. Furthermore, the triangular prism tends to provide a more rigid structure. As such, such articles are more reliable and less susceptible to deformations. Furthermore, article having the above-described structure are easier to construct, e.g. by folding a blank.

In this embodiment, the airflow passage has a triangular cross-section. In other embodiments, the cross-section of airflow passage has a non-circular shape other than triangular, e.g. hexagonal, or square, or any irregular shape. Advantageously, non-circular shapes may provide an increased number of surfaces on which aerosol generating materials can be deposited on. This in turns allows for more and/or different aerosol generating materials to be provided in a single article without increasing the size of the article. In this embodiment, the elongate shape is a triangular prism. In other embodiments, the elongate shape is not a triangular prism, e.g. the elongate shape may be a hexagonal prism or a cuboid. In this embodiment, the airflow passage has a shape that is the same as the elongate shape. In other embodiments, the airflow passage has a shape that is different to the elongate shape. In some embodiments, the airflow passage has a shape that is different to the shape of the body. In other words, the shape of the body, as defined by the outermost surfaces of the body, is different to the shape of the internal airflow passage within that body. In some embodiments, the body is a tube. In some embodiments, the body is thin-walled. The body is considered thin-walled if the thickness of the wall is equal to or less than 2mm. In some embodiments, one or more of the walls may be comprised of multiple layers. In this embodiment, the article has three walls. In other embodiments, the article has more or fewer walls. In this embodiment, the first, second, and third aerosol generating materials are each an aerosol gel. In other embodiments, each of the first, second, and third aerosol generating materials is not an aerosol gel. In some embodiments, one or more of the first, second, and third aerosol generating materials is an aerosol gel, or an aerosol solid, or an aerosol liquid. In this embodiment, each of the first, second, and third walls comprises a heating element. In other embodiments, each of the first, second, and third walls does not comprise a heating element. In some embodiments, one or more of the outer walls of the article comprise a heating element. In this embodiment, the heating element heats aerosol generating material via induction. In other embodiments, the heating element does not heat the aerosol generating material via induction, e.g. the heating element heats aerosol generating material via conduction or radiation. In some embodiments, one or more of the outer walls of the article consists of the heating element. Advantageously, this allows for greater and/or faster heating of the aerosol generating materials as all of the outer wall can generate heat. In some embodiments, the heating element is comprised in another component of the article.

With reference to Fig. 2B, the article of Fig. 2A can be made from a single continuous sheet of material or a blank, where the first, second, and third walls 202, 204, 206 are arranged into the triangular prism shape. The sheet of material can be folded along a first line 214 and a second line 216 to until the first wall 202 comes into contact with the third wall 206 to form the triangular prism shape. The sheet of material comprises a first region that corresponds to the first wall 202 when the sheet of material is folded into the triangular prism shape. The sheet of material comprises a second region that corresponds to the second wall 204 when the sheet of material is folded into the triangular prism shape. The sheet of material comprises a third region that corresponds to the third wall 206 when the sheet of material is folded into the triangular prism shape. The first and second regions may be continuously connected with each other. The second and third regions may be continuously connected with each other. The aerosol generating material may be deposited onto the sheet of material prior to and/or after folding into the shape of the article.

In some embodiments, the first and second lines may be scored or otherwise weakened at the first and/or second lines 214, 216. Advantageously this facilitates folding of the sheet of material. In this embodiment, the article is made from a single continuous sheet. In other embodiments, the article is not made from a single continuous sheet, e.g. the article may be made from separate components. In this embodiment, the article is formed by folding a single continuous sheet. In other embodiments, the article is not formed by folding a single continuous sheet, e.g. the article may be formed by joining a plurality of separate sheets together. Fig. 3 depicts an alternative construction of an article 300. The article comprises two hollow straws 302 or hollow cylinders 302 squeezed together with a central sheet therebetween. In some embodiments, the squeezing may be achieved by cavity of the aerosol forming device 100. In some embodiments, the squeezing may be achieved by outer walls of the article. In this embodiment, the article comprises two airflow passages. Each of the two straws 302 defines a respective airflow passage therein. The article 300 further comprises aerosol generating material deposited within each of the straws. Advantageously, the central sheet tends to act as a divider so that the cross contamination between the airflow passages are reduced or mitigated. The article 300 further comprises two outer walls 306 which squeeze the two straws 302 together. The squeezing of the two straws deforms the straws into the elliptical shapes as shown in Fig. 3. This in turn means that the deformed and/or compressed straws exert an outward force. This outward force may improve contact between the airflow passage and the outer walls. The improved contact may improve the heating of the aerosol generating material as the contact and/or heat conductive path between the heating element within the outer walls and the aerosol generating material within the straws is improved by the outward force exerted by the straws.

In this embodiment, the straws are made from paper. In other embodiments, the straws are not made from paper. In this embodiment, each of the outer walls, straws, and central sheet is made from paper. In other embodiments, each of the outer walls, straws, and central sheet is not made from paper, e.g. they are made from plastic or metal instead.

An alternative article 400 is shown in Fig. 4. The alternative article 400 is same as the article 200 shown in Fig. 2 except that the body comprises a plurality of internal walls that are arranged into a honeycomb shape. In this embodiment, the article 400 comprises a plurality of airflow passages. Each of the airflow passages has a hexagonal prism shape defined by a compartment of the honeycomb shape of the body. The aerosol generating material is deposited on one or more of the surfaces of the internal walls. Advantageously, the honeycomb shape can allow for a maximum amount of aerosol generating material to be positioned within the volume defined by the internal walls and/or the airflow passages for a given size of the article 400. The article 400 comprises a mouth end 402 from which the user may inhale aerosol in one or more of the airflow passages. The walls are flexible coupled together so as to be able to collapse into a substantially planar shape. Specifically, the walls are coupled so as to allow relative rotations. The collapsed article 400 tends to occupy a smaller volume than the expanded article 400. As such, this advantageously means that the collapsed article is easier to store and/or transport.

In this embodiment, there are four airflow passages. In other embodiments, there are more or fewer airflow passages. In some embodiments, there are at least two airflow passages. In this embodiment, the walls are coupled so as to allow relative rotations. In other embodiments, the walls are not coupled so as to allow relative rotations, e.g. the walls are rigidly coupled. In this embodiment, the article collapses into a substantially planar shape. In this embodiment, the article collapses into a shape other than planar, e.g. the article collapses into a pyramid or a prism such as a cuboid.

Fig. 5 depicts a series of illustration on how to use the article 400. At step 1, a collapsed article is expanded by a user from the planar shape to the honeycomb shape. In this embodiment, the user pushes the opposing edges of the collapsed article that are parallel to the longitudinal direction towards each other to expand the article 400. At step 2, an expanded article 400 is orientated so that the outlet/mouth end is upwards. At step 3, the orientated article is inserted into a cavity of an aerosol provision device 502. The cavity of the aerosol provision device 502 may have a shape which is complementary to the expanded of the article 400. The cavity therefore may maintain and/or support the expanded shape of article and/or otherwise prevent the article 400 from reverting back to the collapsed state. The aerosol provision device 502 is able to use the aerosol generating material within the article to produce an aerosol. For example, the aerosol provision device 502 may heat the aerosol generating material to generate an aerosol. At step 4, the generated aerosol in the airflow passage may be inhaled by the user through the outlet and/or mouth end.

The ordering in the method described in relation to Fig. 5 is merely illustrative. In other embodiments, the steps may be performed in any order and one or more of the steps may be omitted entirely. For example, the insertion of the article may be performed before or concurrently with the expansion of the article. In other words, the article may be configured to be inserted into the aerosol provision device while in the compressed/collapsed state or a partially compressed/collapsed state. Once the article has been inserted into the aerosol provision device, the article may be expanded. The outward force exerted by the article during expansion advantageously, improves the articles engagement with the aerosol provision device.

In some embodiments, the article may comprise one or more resilient walls (i.e. an elastic/springy wall) that exerts a restoring force that biases the compressed or collapsed article into the expanded article. In some embodiments, the body may be resilient. Such articles may be packaged and held in the compressed/collapsed state by a restraining component such as a paper band/cover sized to be greater than the cross-sectional area of the article in the compressed state but smaller than the cross-sectional area of the article in the expanded state. Once such an article is inserted into the aerosol provision device, the restraining component can be removed or disengaged (e.g. cut) so as to allow for the natural expansion of the article within the aerosol provision device. In other words, the article may spring outwards once the restraining component is removed or disengaged. The natural expansion caused by the one or more resilient walls exerts an outward force within the aerosol provision device that further improves the engagement of the article with the aerosol provision device. Advantageously, relative movement between the article and the aerosol provision device is reduced or prevented.

Furthermore, removal of the article from the aerosol provision device may comprise at least partially compressing the article.

The various embodiments described herein are presented only to assist in understanding and teaching the claimed features. These embodiments are provided as a representative sample of embodiments only, and are not exhaustive and/or exclusive. It is to be understood that advantages, embodiments, examples, functions, features, structures, and/or other aspects described herein are not to be considered limitations on the scope of the invention as defined by the claims or limitations on equivalents to the claims, and that other embodiments may be utilised and modifications may be made without departing from the scope of the claimed invention. Various embodiments of the invention may suitably comprise, consist of, or consist essentially of, appropriate combinations of the disclosed elements, components, features, parts, steps, means, etc, other than those specifically described herein. In addition, this disclosure may include other inventions not presently claimed, but which may be claimed in future.

Claims

1. An aerosol forming article comprising: a body having one or more internal surfaces defining an airflow passage, wherein the airflow passage has a non-circular cross-section; and an aerosol generating material on the internal surface of the body.

2. An aerosol forming article according to claim 1, wherein the body is formed from a folded sheet of material.

3. An aerosol forming article according to any preceding claim, wherein the airflow passage has a substantially triangular cross-section or a substantially hexagonal cross-section.

4. An aerosol forming article according to any preceding claim, wherein the one or more internal surfaces define a honeycomb structure and the aerosol forming article comprises a plurality of airflow passages defined by the honeycomb structure.

5. An aerosol forming article according to any preceding claim, further comprising one or more walls defining the one or more internal surfaces; more preferably the one or more walls has a thickness of less than 2mm.

6. An aerosol forming article according to claim 5, wherein the one or more walls are interconnected panels; more preferably the aerosol generating material comprises: a first aerosol generating material deposited on one of the interconnected panels; and a second aerosol generating material deposited on another one of the interconnected panels; and wherein the first and second aerosol generating materials are independently heatable.

7. An aerosol forming article according to any preceding claim, further comprising a heating element configured to generate heat by penetration with a varying magnetic field to heat the aerosol generating material.

8. An aerosol forming article according to claim 7, wherein the heating element comprises a metal or a metal alloy.

9. An aerosol forming article according to claim 79 or claim 8 when dependent on claim 6 or any claim dependent thereon, wherein the one or more walls consist of or substantially consist of the heating element.

10. An aerosol forming article according to claim 79 or claim 8, wherein the one or more walls comprises the heating element.

11. An aerosol forming article according to claim 10, wherein the wall comprises: a first layer comprising the heating element; and a second layer that does not generate heat by penetration with a varying magnetic field; and wherein the first layer is located between the aerosol generating material and the second layer.

12. An aerosol forming article according to claim 11 , wherein the second layer comprises one or more materials selected from the group of materials consisting of: paper, card, paperboard, cardboard, reconstituted tobacco, and a plastics material.

13. An aerosol forming article comprising: a body having a plurality of walls; and an aerosol generating material on one of the plurality of walls wherein the body is moveable between a first configuration where the body is compressed and a second configuration where the body is expanded such that the plurality of walls defines at least one airflow passage therebetween.

14. The aerosol forming article according to claim 13, wherein in the second configuration the body is resilient.

15. The aerosol forming article according to claim 13 or claim 14 wherein at least one of the walls is rotatably coupled to another one of the walls so that they can rotate relative to each other

16. The aerosol forming article according to any of claims 13 to 15, wherein the at least one airflow passage has a non-circular cross-section.

17. A packet of articles comprising a plurality of articles according to any of claims 13 to 16, wherein at least one of the articles is in the first configuration.

18. The packet of claim 17, further comprising a restraining component configured to hold the at least one of the articles in the first configuration.

19. An aerosol provision system comprising: an aerosol forming article according to any preceding claim; and an aerosol provision device configured to heat the aerosol generating material to generate aerosol.

20. A method for producing aerosol, the method comprising: inserting an article into an aerosol provision device configured to heat the aerosol generating material to generate aerosol, the article comprising: a body having a plurality of walls, wherein the body is moveable between a first configuration where the body is substantially compressed and a second configuration where the body is expanded such that the plurality of walls defines at least one airflow passage therebetween, and an aerosol generating material on one of the plurality of walls; moving the body into the second configuration; and heating, using the aerosol provision device, the article to generate aerosol.