Aerosol generation articles and aerosol provision systems

Abstract

An aerosol generation article and an aerosol provision system. The aerosol generation article comprises: an aerosol generation segment, the aerosol generation segment comprising an aerosol generating substrate and a heating element; the aerosol generating substrate forming an aerosol under a heating condition; the heating element comprising a first portion surrounded in a circumferential direction and a second portion arranged within the first portion; the first portion and the second portion being connected to each other along the circumferential direction; and a packaging material, encasing the aerosol generating substrate and the heating element.

Description

[0001] AEROSOL GENERATION ARTICLES AND AEROSOL PROVISION SYSTEMS

[0002] Technical Field

[0003] The present application relates to the field of aerosol provision technology, and particularly relates to an aerosol generation article and an aerosol provision system.

[0004] Technical Background

[0005] An aerosol provision system comprises an aerosol provision device and an aerosol generation article (such as a tobacco product). By inserting the aerosol generation article into the heating chamber of the aerosol provision device and heating the aerosol generation article through the aerosol provision device, an aerosol can be obtained. This heat-not-burn technology enables the aerosol generation article to release active ingredients during the carbonization stage before combustion, reducing the generation of tar and harmful substances.

[0006] The heating methods of the aerosol provision device include external heating and internal heating. In the internal heating method, a needle-shaped or plate-shaped heating element is inserted into the substrate segment of the aerosol generation article, so that the heat diffuses from the center of the aerosol generation article to the outside. In the external heating method, a cylindrical heating element surrounds the substrate segment of the aerosol generation article, so that the heat diffuses from the outside of the aerosol generation article to the inside.

[0007] Summary

[0008] In accordance with an aspect, there is provided an aerosol generation article. The article comprises an aerosol generation segment and a packaging material. The aerosol generation segment comprises an aerosol generating substrate and a heating element. The aerosol generating substrate forms an aerosol under a heating condition. The heating element comprises a first portion surrounded in a circumferential direction and a second portion arranged within the first portion. The first portion and the second portion are connected to each other along the circumferential direction. A packaging material encases the aerosol generating substrate and the heating element.

[0009] In embodiments, the heating element is located upstream of the aerosol generating substrate, and configured to heat upstream air of the aerosol generating substrate.

[0010] In embodiments, the aerosol generation segment may further comprise an end element. The end element is located upstream of the aerosol generating substrate, and the heating element is arranged at at least one of downstream of the end element, inside the end element and nested with the end element. In embodiments, the first portion of the heating element surrounds a peripheral surface of the end element, and the second portion is inserted into the end portion.

[0011] In embodiments, the end element is made of a porous material

[0012] In embodiments, the pore size of the end element is not greater than 5 nanometers.

[0013] In embodiments, the material of the end portion is selected from at least one of polypropylene, cellulose acetate fibers and glass fibers.

[0014] In embodiments, the first portion of the heating element surrounds outside the aerosol generating substrate, and the second portion of the heating element is embedded into the aerosol generating substrate.

[0015] In embodiments, the surface of the second portion forms a concave-convex surface.

[0016] In embodiments, at least the second portion in the heating element comprises an electromagnetic induction material.

[0017] In embodiments, the electromagnetic induction material comprises iron, cobalt, nickel, gadolinium, erbium, aluminum, and alloys thereof.

[0018] In embodiments, the first portion comprises a thermal insulation material.

[0019] In embodiments, the thermal insulation material comprises aerogel, paper, plastics, or composites thereof.

[0020] In embodiments, the thermal conductivity of the first portion is less than 0.050 w / m.k.

[0021] In embodiments, the Curie temperature of the heating element does not exceed 5000C.

[0022] In embodiments, the wall thickness of the heating element is less than 0.5 mm.

[0023] In embodiments, the cross section of the heating element is in an 'e' shape or spiral shape.

[0024] In embodiments, there are multiple segments of aerosol generating substrates arranged along a length direction, and each segment of aerosol generating substrate is correspondingly provided with one heating element.

[0025] In accordance with another aspect, there is provided an aerosol provision system, comprising an aerosol provision device and the aerosol generation article as described above. The aerosol provision device comprises a heating chamber for accommodating the aerosol generation article, and a coil for generating an electromagnetic field within the heating chamber.

[0026] In accordance with another aspect, there is provided an article for an aerosol provision system, the article comprising an aerosol generation segment, the aerosol generation segment comprising: aerosol generating material and a heating element; the heating element comprising a first portion extending in a circumferential direction and a second portion disposed within the first portion; the first portion and the second portion being connected to each other along the circumferential direction; and a packaging material encasing at least a portion of the aerosol generating material and the heating element.

[0027] One or more of the above features of the present disclosure may have at least one or more of the following beneficial effects:

[0028] The present disclosure provides a heating element in the aerosol generation segment. The heating element can heat the aerosol generation segment. After the puffing action carries away the hot air inside the aerosol generation article, the heating element may quickly heat the surrounding air, increase the overall temperature of the air inside the aerosol generation article, shorten the waiting time for the next puffing, and improve the puffing taste. In addition, the heating element continuously generates heat in the aerosol generation article, which can also accelerate the release of the active ingredients of the aerosol generating substrate and save energy consumption.

[0029] The first portion of the heating element surrounds the second portion in the circumferential direction. This structural design may enable the heating element to have sufficient support strength. It can not only be nested with the aerosol generating substrate or the end element, but also be separately arranged upstream or downstream of the aerosol generating substrate.

[0030] Additional aspects and advantages of the application will be partially described in the following description, some will become apparent from the following description, and others will be learned through the practice of the application.

[0031] Brief Description of the Drawings

[0032] Embodiments will now be described, by way of example only, and with reference to the accompanying drawings in which:

[0033] Figure 1 is a schematic structural diagram of an aerosol generation article;

[0034] Figure 2 is a schematic structural diagram of an aerosol generation article;

[0035] Figure 3 is a schematic structural diagram of the heating element of the aerosol generation article shown in Figure 2;

[0036] Figure 4 is a schematic structural diagram of an aerosol generation article;

[0037] Figure 5 is a schematic structural diagram of the heating element of the aerosol generation article shown in Figure 4;

[0038] Figure 6 is a schematic structural diagram of an aerosol generation article; Figure 7 is a schematic structural diagram of the combined heating element and end element of the aerosol generation article shown in Figure 6;

[0039] Figure 8 is a schematic structural diagram of an aerosol generation article;

[0040] Figure 9 is a schematic structural diagram of the combined heating element and end element of the aerosol generation article shown in Figure 8;

[0041] Figure 10 is a schematic structural diagram of an aerosol generation article;

[0042] Figure 11 is a schematic structural diagram of an aerosol generation article;

[0043] Figure 12 is a schematic structural diagram of an aerosol generation article;

[0044] Figures 13-16 are schematic structural diagrams of the heating element; and

[0045] Figure 17 is a schematic structural diagram of the aerosol provision system.

[0046] Description of reference numerals:

[0047] 10 Aerosol generation article, 110 Aerosol generating substrate, 120 Heating element, 121 First portion, 122 Second portion, 130 Packaging material, 140 End element, 150 Flow guiding section, 160 Cooling section, 170 Mouthpiece section,

[0048] 20 Aerosol provision device, 201 Housing, 202 Battery assembly, 203 Controller, 204 Heating chamber, 205 Coil.

[0049] Detailed Description

[0050] The following describes some embodiments with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining technical principles and are not intended to limit the scope of protection.

[0051] As used herein, the term “delivery system” is intended to encompass systems that deliver at least one substance to a user in use, and includes: combustible aerosol provision systems, such as cigarettes, cigarillos, cigars, and tobacco for pipes or for roll-your-own or for make-your-own cigarettes (whether based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, tobacco substitutes or other smokable material); non-combustible aerosol provision systems that release compounds from an aerosolgenerating material without combusting the aerosol-generating material, such as electronic cigarettes, tobacco heating products, and hybrid systems to generate aerosol using a combination of aerosol-generating materials; and aerosol-free delivery systems that deliver the at least one substance to a user orally, nasally, transdermally or in another way without forming an aerosol, including but not limited to, lozenges, gums, patches, articles comprising inhalable powders, and oral products such as oral tobacco which includes snus or moist snuff, wherein the at least one substance may or may not comprise nicotine. A “combustible” aerosol provision system is one where a constituent aerosolgenerating material of the aerosol provision system (or component thereof) is combusted or burned during use in order to facilitate delivery of at least one substance to a user.

[0052] In some embodiments, the delivery system is a combustible aerosol provision system, such as a system selected from the group comprising a cigarette, a cigarillo and a cigar.

[0053] In some embodiments, the disclosure relates to a component for use in a combustible aerosol provision system, such as a filter, a filter rod, a filter segment, a tobacco rod, a spill, an aerosol-modifying agent release component such as a capsule, a thread, or a bead, or a paper such as a plug wrap, a tipping paper or a cigarette paper.

[0054] A “non-combustible” aerosol provision system is one where a constituent aerosolgenerating 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.

[0055] In some embodiments, the delivery system is a non-combustible aerosol provision system, such as a powered non-combustible aerosol provision system.

[0056] 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 aerosol-generating material is not a requirement.

[0057] In some embodiments, the non-combustible aerosol provision system is an aerosolgenerating material heating system, also known as a heat-not-burn system. An example of such a system is a tobacco heating system.

[0058] 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.

[0059] Typically, the non-combustible aerosol provision system may comprise a non- combustible aerosol provision device and a consumable for use with the non-combustible aerosol provision device.

[0060] In some embodiments, the disclosure relates to consumables comprising aerosolgenerating material and configured to be used with non-combustible aerosol provision devices. These consumables are sometimes referred to as articles throughout the disclosure.

[0061] 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.

[0062] 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.

[0063] In some embodiments, the consumable for use with the non-combustible aerosol provision device may comprise aerosol-generating material, an aerosol-generating 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 aerosolmodifying agent.

[0064] In some embodiments, the delivery system is an aerosol-free delivery system that delivers at least one substance to a user orally, nasally, transdermally or in another way without forming an aerosol, including but not limited to, lozenges, gums, patches, articles comprising inhalable powders, and oral products such as oral tobacco which includes snus or moist snuff, wherein the at least one substance may or may not comprise nicotine.

[0065] In some embodiments, the substance to be delivered may be an aerosol-generating material or a material that is not intended to be aerosolised. As appropriate, either material may comprise one or more active constituents, one or more flavours, one or more aerosolformer materials, and / or one or more other functional materials.

[0066] In some embodiments, the substance to be delivered comprises an active substance. The active substance as used herein may be a physiologically active material, which is a material intended to achieve or enhance a physiological response. The active substance may for example be selected from nutraceuticals, nootropics, psychoactives. The active substance may be naturally occurring or synthetically obtained. The active substance may comprise for example nicotine, caffeine, taurine, theine, vitamins such as B6 or B12 or C, melatonin, cannabinoids, or constituents, derivatives, or combinations thereof. The active substance may comprise one or more constituents, derivatives or extracts of tobacco, cannabis or another botanical.

[0067] In some embodiments, the active substance comprises nicotine. In some embodiments, the active substance comprises caffeine, melatonin or vitamin B12.

[0068] As noted herein, the active substance may comprise one or more constituents, derivatives or extracts of cannabis, such as one or more cannabinoids or terpenes.

[0069] As noted herein, the active substance may comprise or be derived from one or more botanicals or constituents, derivatives or extracts thereof. As used herein, the term "botanical" includes any material derived from plants including, but not limited to, extracts, leaves, bark, fibres, stems, roots, seeds, flowers, fruits, pollen, husk, shells or the like. Alternatively, the material may comprise an active compound naturally existing in a botanical, obtained synthetically. The material may be in the form of liquid, gas, solid, powder, dust, crushed particles, granules, pellets, shreds, strips, sheets, or the like.

[0070] Example botanicals are tobacco, eucalyptus, star anise, hemp, cocoa, cannabis, fennel, lemongrass, peppermint, spearmint, rooibos, chamomile, flax, ginger, ginkgo biloba, hazel, hibiscus, laurel, licorice (liquorice), matcha, mate, orange skin, papaya, rose, sage, tea such as green tea or black tea, thyme, clove, cinnamon, coffee, aniseed (anise), basil, bay leaves, cardamom, coriander, cumin, nutmeg, oregano, paprika, rosemary, saffron, lavender, lemon peel, mint, juniper, elderflower, vanilla, Wintergreen, beefsteak plant, curcuma, turmeric, sandalwood, cilantro, bergamot, orange blossom, myrtle, cassis, valerian, pimento, mace, damien, marjoram, olive, lemon balm, lemon basil, chive, carvi, verbena, tarragon, geranium, mulberry, ginseng, theanine, theacrine, maca, ashwagandha, damiana, guarana, chlorophyll, baobab or any combination thereof. The mint may be chosen from the following mint varieties: Mentha Arventis, Mentha c.v., Mentha niliaca, Mentha piperita, Mentha piperita citrata c.v., Mentha piperita c.v, Mentha spicata crispa, Mentha cardifolia, Memtha longifolia, Mentha suaveolens variegata, Mentha pulegium, Mentha spicata c.v. and Mentha suaveolens.

[0071] In some embodiments, the active substance comprises or is derived from one or more botanicals or constituents, derivatives or extracts thereof and the botanical is tobacco. In some embodiments, the active substance comprises or derived from one or more botanicals or constituents, derivatives or extracts thereof and the botanical is selected from eucalyptus, star anise, cocoa and hemp.

[0072] In some embodiments, the active substance comprises or derived from one or more botanicals or constituents, derivatives or extracts thereof and the botanical is selected from rooibos and fennel.

[0073] In some embodiments, the substance to be delivered comprises a flavour. As used herein, the terms "flavour" and "flavourant" refer to materials which, where local regulations permit, may be used to create a desired taste, aroma or other somatosensorial sensation in a product for adult consumers. They may include naturally occurring flavour materials, botanicals, extracts of botanicals, synthetically obtained materials, or combinations thereof (e.g., tobacco, cannabis, licorice (liquorice), hydrangea, eugenol, Japanese white bark magnolia leaf, chamomile, fenugreek, clove, maple, matcha, menthol, Japanese mint, aniseed (anise), cinnamon, turmeric, Indian spices, Asian spices, herb, Wintergreen, cherry, berry, red berry, cranberry, peach, apple, orange, mango, clementine, lemon, lime, tropical fruit, papaya, rhubarb, grape, durian, dragon fruit, cucumber, blueberry, mulberry, citrus fruits, Drambuie, bourbon, scotch, whiskey, gin, tequila, rum, spearmint, peppermint, lavender, aloe vera, cardamom, celery, cascarilla, nutmeg, sandalwood, bergamot, geranium, khat, naswar, betel, shisha, pine, honey essence, rose oil, vanilla, lemon oil, orange oil, orange blossom, cherry blossom, cassia, caraway, cognac, jasmine, ylang-ylang, sage, fennel, wasabi, piment, ginger, coriander, coffee, hemp, a mint oil from any species of the genus Mentha, eucalyptus, star anise, cocoa, lemongrass, rooibos, flax, ginkgo biloba, hazel, hibiscus, laurel, mate, orange skin, rose, tea such as green tea or black tea, thyme, juniper, elderflower, basil, bay leaves, cumin, oregano, paprika, rosemary, saffron, lemon peel, mint, beefsteak plant, curcuma, cilantro, myrtle, cassis, valerian, pimento, mace, damien, marjoram, olive, lemon balm, lemon basil, chive, carvi, verbena, tarragon, limonene, thymol, camphene), flavour enhancers, bitterness receptor site blockers, sensorial receptor site activators or stimulators, sugars and / or sugar substitutes (e.g., sucralose, acesulfame potassium, aspartame, saccharine, cyclamates, lactose, sucrose, glucose, fructose, sorbitol, or mannitol), and other additives such as charcoal, chlorophyll, minerals, botanicals, or breath freshening agents. They may be imitation, synthetic or natural ingredients or blends thereof. They may be in any suitable form, for example, liquid such as an oil, solid such as a powder, or gas.

[0074] In some embodiments, the flavour comprises menthol, spearmint and / or peppermint. In some embodiments, the flavour comprises flavour components of cucumber, blueberry, citrus fruits and / or redberry. In some embodiments, the flavour comprises eugenol. In some embodiments, the flavour comprises flavour components extracted from tobacco. In some embodiments, the flavour comprises flavour components extracted from cannabis.

[0075] In some embodiments, the flavour may comprise a sensate, which is intended to achieve a somatosensorial sensation which are usually chemically induced and perceived by the stimulation of the fifth cranial nerve (trigeminal nerve), in addition to or in place of aroma or taste nerves, and these may include agents providing heating, cooling, tingling, numbing effect. A suitable heat effect agent may be, but is not limited to, vanillyl ethyl ether and a suitable cooling agent may be, but not limited to eucolyptol, WS-3.

[0076] 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. In some embodiments, the aerosol-generating material may comprise an “ amorphous solid ” , which may alternatively be referred to as a “ monolithic solid” (i.e. non-fibrous). 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 aerosol-generating 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 one or more active substances and / or flavours, one or more aerosol-former materials, and optionally one or more other functional material.

[0077] The aerosol-former material may comprise one or more constituents capable of forming an aerosol. In some embodiments, the aerosol-former material may comprise one or more of glycerol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1 ,3-butylene glycol, erythritol, meso-Erythritol, ethyl vanillate, ethyl laurate, a diethyl suberate, triethyl citrate, triacetin, a diacetin mixture, benzyl benzoate, benzyl phenyl acetate, tributyrin, lauryl acetate, lauric acid, myristic acid, and propylene carbonate.

[0078] The one or more other functional materials may comprise one or more of pH regulators, colouring agents, preservatives, binders, fillers, stabilizers, and / or antioxidants.

[0079] The material may be present on or in a support, to form a substrate. The support may, for example, be or comprise paper, card, paperboard, cardboard, reconstituted material, a plastics material, a ceramic material, a composite material, glass, a metal, or a metal alloy. In some embodiments, the support comprises a susceptor. In some embodiments, the susceptor is embedded within the material. In some alternative embodiments, the susceptor is on one or either side of the material.

[0080] A consumable is an article comprising or consisting of aerosol-generating material, part or all of which is intended to be consumed during use by a user. A consumable may comprise one or more other components, such as an aerosol-generating material storage area, an aerosol-generating material transfer component, an aerosol generation area, a housing, a wrapper, a mouthpiece, a filter and / or an aerosol-modifying agent. A consumable may also comprise an aerosol generator, such as a heater, that emits heat to cause the aerosol-generating material to generate aerosol in use. The heater may, for example, comprise combustible material, a material heatable by electrical conduction, or a susceptor.

[0081] A susceptor is a material that is heatable by penetration with a varying magnetic field, such as an alternating magnetic field. The susceptor may be an electrically-conductive material, so that penetration thereof with a varying magnetic field causes induction heating of the heating material. The heating material may be magnetic material, so that penetration thereof with a varying magnetic field causes magnetic hysteresis heating of the heating material. The susceptor may be both electrically-conductive and magnetic, so that the susceptor is heatable by both heating mechanisms. The device that is configured to generate the varying magnetic field is referred to as a magnetic field generator, herein.

[0082] An aerosol-modifying agent is a substance, typically located downstream of the aerosol generation area, that is configured to modify the aerosol generated, for example by changing the taste, flavour, acidity or another characteristic of the aerosol. The aerosolmodifying agent may be provided in an aerosol-modifying agent release component, that is operable to selectively release the aerosol-modifying agent. The aerosol-modifying agent may, for example, be an additive or a sorbent. The aerosol-modifying agent may, for example, comprise one or more of a flavourant, a colourant, water, and a carbon adsorbent. The aerosol-modifying agent may, for example, be a solid, a liquid, or a gel. The aerosol-modifying agent may be in powder, thread or granule form. The aerosol-modifying agent may be free from filtration material.

[0083] An aerosol generator is an apparatus configured to cause aerosol to be generated from the aerosol-generating material. In some embodiments, the aerosol generator is a heater configured to subject the aerosol-generating material to heat energy, so as to release one or more volatiles from the aerosol-generating material to form an aerosol. In some embodiments, the aerosol generator is configured to cause an aerosol to be generated from the aerosolgenerating material without heating. For example, the aerosol generator may be configured to subject the aerosol-generating material to one or more of vibration, increased pressure, or electrostatic energy.

[0084] Aerosol delivery systems may also be referred to as vapour delivery systems such as nebulisers or e-cigarettes. Throughout the following description the term "e-cigarette" or "electronic cigarette" may sometimes be used, but it will be appreciated this term may be used interchangeably with aerosol delivery system I device and electronic aerosol delivery system I device. Furthermore, and as is common in the technical field, the terms "aerosol" and "vapour", and related terms such as "vaporise", "volatilise" and "aerosolise", may generally be used interchangeably.

[0085] Aerosol delivery systems (e-cigarettes) often, though not always, comprise a modular assembly comprising a reusable device part and a replaceable (disposable / consumable) cartridge part. Often, the replaceable cartridge part will comprise the aerosol-generating material and the vaporiser (which may collectively be called a “cartomizer” ) and the reusable device part will comprise the power provision (e.g. rechargeable power source) and control circuitry. It will be appreciated these different parts may comprise further elements depending on functionality. For example, the reusable device part will often comprise a user interface for receiving user input and displaying operating status characteristics, and the replaceable cartridge device part in some cases comprises a temperature sensor for helping to control temperature. Cartridges are electrically and mechanically coupled to the control unit for use, for example using a screw thread, bayonet, or magnetic coupling with appropriately arranged electrical contacts. When the aerosol-generating material in a cartridge is exhausted, or the user wishes to switch to a different cartridge having a different aerosol-generating material, the cartridge may be removed from the reusable part and a replacement cartridge attached in its place. Systems and devices conforming to this type of two-part modular configuration may generally be referred to as two-part systems / devices.

[0086] It is common for electronic cigarettes to have a generally elongate shape. For the sake of providing a concrete example, certain embodiments of the disclosure will be taken to comprise this kind of generally elongate two-part system employing disposable cartridges. However, it will be appreciated that the underlying principles described herein may equally be adopted for different configurations, for example single-part systems or modular systems comprising more than two parts, refillable devices and single-use disposables, as well as other overall shapes, for example based on so-called box-mod high performance devices that typically have a boxier shape. More generally, it will be appreciated certain embodiments of the disclosure are based on aerosol delivery systems which are operationally configured to provide functionality in accordance with the principles described herein and the constructional aspects of systems configured to provide the functionality in accordance with certain embodiments of the disclosure is not of primary significance.

[0087] The following will provide a detailed introduction to the structures of the aerosol generation article and the aerosol provision system through specific embodiments.

[0088] Regardless of whether the external heating method or the internal heating method is used in an aerosol provision device, there is a waiting time required for heat conduction. But the puffing action will carry away the hot air inside the aerosol generation article, resulting in insufficient heat inside the aerosol generation article after each puff. It is necessary to wait for a long enough time for the aerosol generation article to rise to a suitable puffing temperature. If the waiting time is not sufficient, both the temperature and the concentration of the aerosol inhaled into the user's mouth are relatively low, affecting the taste.

[0089] Please refer to Figures 1 to 15. This embodiment provides an aerosol generation article, which includes an aerosol generation segment and a packaging material 130. The aerosol generation segment includes an aerosol generating substrate 110 and a heating element 120, and the packaging material 130 clads the aerosol generating substrate 110 and the heating element 120. The aerosol generating substrate 110 forms an aerosol under heating conditions; the heating element 120 includes a first portion 121 surrounded in a circumferential direction and a second portion 122 arranged within the first portion 121 ; the first portion 121 and the second portion 122 are connected to each other along the circumferential direction.

[0090] At least the second portion 122 of the heating element 120 comprises an electromagnetic induction material. When the aerosol provision device 20 heats the aerosol generation article 10 by means of electromagnetic heating, the heating element 120 can generate heat under the action of an electromagnetic field. The heating element 120 can be arranged upstream of the aerosol generating substrate 110, downstream of the aerosol generating substrate 110, or within the aerosol generating substrate 110. According to the flow direction of the air flow during puffing, the side from which the air flow flows out is the downstream of the aerosol generating substrate 110, and the side into which the airflow flows is the upstream of the aerosol generating substrate 110. When the heating element 120 is located upstream of the aerosol generating substrate 110, the heating element 120 can preheat the air that is about to enter the aerosol generating substrate 110. When the heating element 120 is arranged within the aerosol generating substrate 110, the heating element 120 can heat the aerosol generating substrate 110 and the air entering the aerosol generating substrate 110. When the heating element 120 is located downstream of the aerosol generating substrate 110, the heating element 120 can heat the aerosol of the mixed air flowing out from the aerosol generating substrate 110. Thus, it can be seen that by arranging the heating element 120 in this embodiment, the temperature of the air flowing through the aerosol generation segment may be increased, and the puffing taste may be improved.

[0091] The material of the first portion 121 and the material of the second portion 122 can be the same or different. When the first portion 121 and the second portion 122 are made of different materials, the first portion 121 and the second portion 122 may be fixed by bonding or electrostatic adhesion.

[0092] In embodiments, the second portion 122 of the heating element 120 comprises an electromagnetic induction material, and the surface of the second portion 122 forms a concave-convex surface. This may increase the surface area of the second portion 122, increase the resistance, and improve the heat generation efficiency of the second portion 122.

[0093] In some examples, the first portion 121 of the heating element 120 does not include an electromagnetic induction material, and the second portion 122 includes an electromagnetic induction material and forms a concave-convex surface. In some examples, both the first portion 121 and the second portion 122 of the heating element 120 comprise an electromagnetic induction material, and the surface of the second portion 122 forms a concave-convex surface. In some examples, both the first portion 121 and the second portion 122 of the heating element 120 include an electromagnetic induction material, and the surfaces of both the first portion 121 and the second portion 122 form a concave-convex surface, but the density of the pattern formed by the concave-convex surface on the second portion 122 is greater than that of the pattern formed by the concave-convex surface on the first portion 121.

[0094] Figures 12 to 15 show the surface structure of the heating element 120 after being unfolded, in which the surface of the second portion 122 is a concave-convex surface, and the surface of the first portion 121 is a smooth surface. The concave-convex structure on the surface of the second portion 122 may be grooves, dots, pits, etched grooves, or embossed metal printing, and these concave-convex structures form patterns such as a maze, a dot matrix, a checkerboard, and a honeycomb. In a possible implementation, please refer to Figures 1 to 4. The aerosol generation article 10 comprises an aerosol generating substrate 110, a packaging material 130, and a heating element 120. The heating element 120 is arranged upstream of the aerosol generating substrate 110, and the packaging material 130 encases the aerosol generating substrate 110 and the heating element 120. The second portion 122 of the heating element 120 includes an electromagnetic induction material, or both the first portion 121 and the second portion 122 of the heating element 120 comprise an electromagnetic induction material, or the second portion 122 of the heating element 120 comprises an electromagnetic induction material and forms a concave-convex surface, or both the first portion 121 and the second portion 122 of the heating element 120 comprise an electromagnetic induction material and only the first portion 121 forms a concave-convex surface. The electromagnetic induction material may includes one or more of iron, cobalt, nickel, gadolinium, erbium, aluminum, and alloys thereof. The Curie temperature of the heating element 120 may be 5000C or lower, optionally 4500C or lower, more optionally 4000C or lower, more optionally 3500C or lower, more optionally 2500C or lower, more optionally 2000C or lower, more optionally 1500C or lower, more optionally 1000C or lower, more optionally 500C or lower. The cross-sectional shape of the heating element 120 may be an "e" shape as shown in Figure 3 or a spiral shape as shown in Figure 4. The wall thickness of the first portion 121 and the second portion 122 of the heating element 120 can be the same or different. The wall thickness of the first portion 121 or the second portion 122 of the heating element 120 can be 0.5 mm or smaller, optionally 0.2 mm or smaller, more optionally 0.1 mm or smaller, more optionally 0.08 mm or smaller, more optionally 0.06 mm or smaller, more optionally 0.04 mm or smaller, more optionally 0.02 mm or smaller.

[0095] In a possible implementation, the aerosol generation segment further comprises an end element 140, and the end element 140 is arranged upstream of the aerosol generating substrate 110. By arranging the end element 140 upstream of the aerosol generating substrate 110, the end element 140 may receive the debris of the aerosol generating substrate 110, as well as the tobacco oil, condensate, etc. generated by heating the aerosol generating substrate 110, and prevent the condensate, tobacco oil, and debris from entering the heating chamber 204 of the aerosol provision device 20.

[0096] An air flow channel is provided on the end element 140, and external air can enter the aerosol generating substrate 110 through the air flow channel. The air flow channel on the end element 140 can be realized through structural design. For example, the end element 140 is set as a spiral winding structure, and the airflow is realized through the gap between the spiral surfaces. The airflow channel on the end element 140 can also be realized through a material with a special structure. For example, the end element 140 is made of a porous material, and the air flow is realized through the pores in the material. In some embodiments, the end element 140 is made of a porous material. The material of the end element 140 is selected from one or a combination of polypropylene, cellulose acetate fibers, and glass fibers. The pores of the end element 140 are 5 nanometers or smaller. Fresh air molecules with a diameter of less than 5 nanometers can pass through, but other particles / aerosol molecules with a size exceeding 5 nanometers cannot pass through. The pores of the end element 140 are 4 nanometers or smaller, more optionally 3 nanometers or smaller, more optionally 2 nanometers or smaller, more optionally 1 nanometer or smaller.

[0097] Both the end element 140 and the heating element 120 are arranged upstream of the aerosol generating substrate 110. Among them, the heating element 120 is arranged at least at one of the following positions: downstream of the end element 140, inside the end element 140, and nested with the end element 140. The second portion 122 of the heating element 120 includes an electromagnetic induction material, or both the first portion 121 and the second portion 122 of the heating element 120 include an electromagnetic induction material, or the second portion 122 of the heating element 120 includes an electromagnetic induction material and forms a concave-convex surface, or both the first portion 121 and the second portion 122 of the heating element 120 include an electromagnetic induction material and only the first portion 121 forms a concave-convex surface. The electromagnetic induction material includes iron, cobalt, nickel, gadolinium, erbium, aluminum, and alloys thereof. The Curie temperature of the heating element 120 may be 5000C or lower, optionally 4500C or lower, more optionally 4000C or lower, more optionally 3500C or lower, more optionally 2500C or lower, more optionally 2000C or lower, more optionally 1500C or lower, more optionally 1000C or lower, more optionally 500C or lower. The cross-sectional shape of the heating element 120 may be an "e" shape or a spiral shape. The wall thickness of the first portion 121 and the second portion 122 of the heating element 120 can be the same or different. The wall thickness of the first portion 121 or the second portion 122 of the heating element 120 may be 0.5 mm or smaller, optionally 0.2 mm or smaller, more optionally 0.1 mm or smaller, more optionally 0.08 mm or smaller, more optionally 0.06 mm or smaller, more optionally 0.04 mm or smaller, more optionally 0.02 mm or smaller.

[0098] In some embodiments, the heating element 120 is nested with the end element 140. The first portion 121 of the heating element 120 surrounds the outer peripheral surface of the end element 140, and the second portion 122 is inserted into the end element 140. Please refer to Figure 6. The cross section of the heating element 120 is in an "e" shape. The second portion 122 of the heating element 120 is embedded in the end element 140, and the first portion 121 extends outside the end element 140 and encases the outer side wall of the end element 140. Please refer to Figure 8. The cross section of the heating element 120 is in a spiral shape. The second portion 122 of the heating element 120 is embedded in the end element 140, and the first portion 121 extends outside the end element 140 and encases the outer side wall of the end element 140. Compared with setting the heating element 120 and the end element 140 separately, setting the heating element 120 nested with the end element 140 is beneficial to reducing the length of the aerosol generation segment.

[0099] In a possible implementation, the heating element 120 is arranged within the aerosol generating substrate 110. Specifically, the first portion 121 of the heating element 120 surrounds the outside of the aerosol generating substrate 110 in the circumferential direction, and the second portion 122 of the heating element 120 is embedded within the aerosol generating substrate 110. Both the first portion 121 and the second portion 122 comprise an electromagnetic induction material, and the surface of the second portion 122 is a concave- convex surface. The setting of the concave-convex surface may increase the surface area of the second portion 122, enabling the second portion 122 to generate more heat. At the same time, in the selection of materials for the heating element 120, a material with a relatively low Curie temperature can be selected, so that the packaging material 130 will not overheat, but it can ensure that the internal temperature of the aerosol generating substrate 110 is relatively high.

[0100] The Curie temperature of the electromagnetic induction material may be 5000C or lower, optionally 4500C or lower, more optionally 4000C or lower, more optionally 3500C or lower, more optionally 2500C or lower, more optionally 2000C or lower, more optionally 1500C or lower, more optionally 1000C or lower, more optionally 500C or lower. The wall thickness of the first portion 121 and the second portion 122 of the heating element 120 can be the same or different. The wall thickness of the first portion 121 or the second portion 122 of the heating element 120 can be 0.5 mm or smaller, optionally 0.2 mm or smaller, more optionally 0.1 mm or smaller, more optionally 0.08 mm or smaller, more optionally 0.06 mm or smaller, more optionally 0.04 mm or smaller, more optionally 0.02 mm or smaller.

[0101] In a possible implementation, the heating element 120 is arranged within the aerosol generating substrate 110. Specifically, the first portion 121 of the heating element 120 surrounds the outside of the aerosol generating substrate 110 in the circumferential direction, and the second portion 122 of the heating element 120 is embedded within the aerosol generating substrate 110. The second portion 122 includes an electromagnetic induction material, or the second portion 122 includes an electromagnetic induction material, and the surface of the second portion 122 is a concave-convex surface. The electromagnetic induction material includes iron, cobalt, nickel, gadolinium, erbium, aluminum, and alloys thereof. The Curie temperature of the electromagnetic induction material can be 5000C or lower, optionally 4500C or lower, more optionally 4000C or lower, more optionally 3500C or lower, more optionally 2500C or lower, more optionally 2000C or lower, more optionally 1500C or lower, more optionally 1000C or lower, more optionally 500C or lower. The first portion 121 includes a thermal insulation material. The thermal insulation material includes aerogel, paper, plastics, or composites thereof. The thermal conductivity of the thermal insulation material is 0.050 w / m.k or lower, optionally 0.040 w / m.k or lower, more optionally 0.030 w / m.k or lower, more optionally 0.020 w / m.k or lower, more optionally 0.010 w / m.k or lower. The wall thickness of the first portion 121 and the second portion 122 of the heating element 120 can be the same or different. The wall thickness of the first portion 121 or the second portion 122 of the heating element 120 can be 0.5 mm or smaller, optionally 0.2 mm or smaller, more optionally 0.1 mm or smaller, more optionally 0.08 mm or smaller, more optionally 0.06 mm or smaller, more optionally 0.04 mm or smaller, more optionally 0.02 mm or smaller. In this embodiment, the second portion 122 is used to heat the aerosol generating substrate 110, and the first portion 121 can reduce the outward heat conduction from the inside of the aerosol generating substrate 110.

[0102] In some embodiments, the aerosol generation segment includes one segment of the aerosol generating substrate 110, and the heating element 120 is arranged on this aerosol generating substrate 110. In other embodiments, the aerosol generation segment includes multiple segments of the aerosol generating substrate 110. The multiple segments of the aerosol generating substrate 110 are arranged along the length direction of the aerosol generation article 10, and each segment of the aerosol generating substrate 110 is correspondingly provided with one heating element 120. These heating elements 120 can be the same or different. Exemplarily, the Curie temperature of the heating element 120 corresponding to each segment of the aerosol generating substrate 110 can be different. During the process of the aerosol generation article 10 being heated by the aerosol provision device 20, when some heating elements 120 reach the Curie temperature and stop generating heat, other heating elements 120 can still continue to generate heat, realizing the zonal heating of the aerosol generating substrate 110.

[0103] In some embodiments, the aerosol generation article 10 includes at least one segment of the aerosol generating substrate 110 and the heating element 120 nested with each segment of the aerosol generating substrate 110, and the end of the aerosol generation article 10 is not provided with the end element 140, as shown in Figure 9.

[0104] In some embodiments, the aerosol generation article 10 includes the end element 140, at least one segment of the aerosol generating substrate 110, and the heating element 120 nested with each segment of the aerosol generating substrate 110. The end element 140 is arranged at the upstream end of the aerosol generation article 10, as shown in Figure 10.

[0105] In some embodiments, the aerosol generation article 10 includes at least one segment of the aerosol generating substrate 110 and the heating element 120 nested with each segment of the aerosol generating substrate 110; it also includes the end element 140 and the heating element 120 correspondingly arranged with the end element 140. The end element 140 is arranged at the upstream end of the aerosol generation article 10, and the heating element 120 is arranged upstream, downstream of the end element 140 or nested with the end element 140. As shown in Figure 11 , both the aerosol generating substrate 110 and the end element 140 are provided with the heating element 120.

[0106] In this embodiment, the heating element 120 is arranged in the aerosol generation segment. The heating element 120 can heat the aerosol generation segment. After the puffing action carries away the hot air inside the aerosol generation article 10, the heating element 120 may quickly heat the surrounding air, increase the overall temperature of the air inside the aerosol generation article 10, shorten the waiting time for the next puffing, and improve the puffing taste.

[0107] This embodiment also provides an aerosol provision system, which includes the aerosol provision device 20 and the above-mentioned aerosol generation article 10. The aerosol provision device 20 includes a housing 201 , a heating module and an energy supply module arranged inside the housing 201. The housing 201 is provided with a receiving cavity. The heating module includes a coil 205 and a heating element. The heating element is arranged in the receiving cavity and constructs the heating chamber 204. The heating element is made of an electromagnetic material. The coil 205 is arranged surrounding the heating chamber 204. The energy supply module includes a battery assembly 202 and a controller 203. The battery assembly 202 and the controller 203 are respectively electrically connected to the coil 205. Please refer to Figure 16. The aerosol generation article 10 includes a packaging material 130, an aerosol generation segment, a flow guiding segment 150, a cooling segment 160, and a mouthpiece segment 170. The aerosol generation segment, the flow guiding segment 150, the cooling segment 160, and the mouthpiece segment 170 are arranged along the length direction of the aerosol generation article 10, and the packaging material 130 clads the outside of the aerosol generation segment, the flow guiding segment 150, the cooling segment 160, and the mouthpiece segment 170. When the user puffs the aerosol generation article 10, the air flow passes through the aerosol generation segment, the flow guiding segment 150, and the cooling segment 160 in sequence, and then flows out from the mouthpiece segment 170. For the structure of the aerosol generation segment, please refer to the above description, which will not be repeated here.

[0108] The aerosol generation article 10 is arranged on the aerosol provision device 20, so that the aerosol generation segment of the aerosol generation article 10 is accommodated in the heating chamber 204. The controller 203 controls the battery assembly 202 to supply power to the coil 205. After the coil 205 is energized, it generates an electromagnetic field, and the heating element generates heat and conducts the heat from the outside to the inside of the aerosol generation article 10. At the same time, the heating element 120 in the aerosol generation segment generates heat under the electromagnetic action, heating the air inside the aerosol generation article 10 and the aerosol generating substrate 110. The inside and outside of the aerosol generation article 10 are heated simultaneously, which may be beneficial to reducing the temperature difference in each area of the aerosol generation article 10 and improving the puffing taste.

[0109] Please refer to Figure 17. When the heating element 120 is arranged on the aerosol generating substrate 110, since the heating element 120 can generate heat in the electromagnetic field, thereby heating the aerosol generating substrate 110, the heating element on the aerosol provision device 20 can be removed. At this time, the receiving cavity of the housing 201 constitutes the heating chamber 204 for accommodating the aerosol generation article 10. After the aerosol generation article 10 is received in the aerosol provision device 20, the coil 205 is energized to make the heating element 120 generate heat. The heating element 120 heats the aerosol generating substrate 110 from the inside of the aerosol generation article 10 to generate an aerosol.

[0110] The referential terminology "an embodiment," "some embodiments," "example," "specific example," or "some examples" means that specific features, structures, materials, or characteristics described in connection with the embodiment or example are comprised in at least one embodiment or example. The indicative expression of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures, materials, or characteristics may be combined in any suitable way in any one or more embodiments or examples.

[0111] Moreover, the terms "first," "second," etc., are used merely for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the characteristics defined as "first," "second," etc., may explicitly or implicitly comprise at least one such characteristic. In the description, the term "multiple" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0112] Unless explicitly defined and limited, terms such as "mounting," "connecting," "connection," "fixing," etc., should be understood broadly. For instance, the connection can be a fixed connection or a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary medium, it can be the internal communication of two components or the interaction between two components, unless explicitly defined otherwise. Those skilled in the art can understand the specific meanings of these terms in the context of the application based on the circumstances. Although embodiments have been shown and described above, it should be understood that the above-described embodiments are exemplary and should not be considered as limiting. Those skilled in the art within the scope of the application can make variations, modifications, replacements, and variations to the above-described embodiments.

Claims

Claims1 . An article for an aerosol provision system, the article comprising an aerosol generation segment, the aerosol generation segment comprising: aerosol generating material and a heating element; the heating element comprising a first portion extending in a circumferential direction and a second portion disposed within the first portion; the first portion and the second portion being connected to each other along the circumferential direction; and a packaging material encasing at least a portion of the aerosol generating material and the heating element.

2. The article according to claim 1 , wherein the heating element extends upstream of the aerosol generating material, and is configured to heat upstream air of the aerosol generating material.

3. The article according to claim 2, wherein the aerosol generation segment comprises an end element, wherein the end element is located upstream of the aerosol generating material, and the heating element is at least one of: downstream of the end element; inside the end element; and nested with the end element.

4. The article according to claim 3, wherein the first portion of the heating element extends about a peripheral surface of the end element, and the second portion extends in the end element.

5. The article according to claim 3 or claim 4, wherein the end element comprises a porous material, and wherein the pore size of the end element is not greater than 5 nanometers.

6. The article according to any of claims 3 to 5, wherein the material of the end portion is selected from at least one of polypropylene, cellulose acetate fibers and glass fibers.

7. The article according to any of claims 1 to 6, wherein the first portion of the heating element surrounds at least a portion ofthe aerosol generating material, and the second portion of the heating element is embedded into at least a portion of the aerosol generating material.

8. The article according to any - of claims 1 to 7, wherein a surface of the second portion forms a concave-convex surface.

9. The article according to any of claims 1 to 8, wherein at least the second portion of the heating element comprises an electromagnetic induction material.

10. The article according to claim 9, wherein the electromagnetic induction material comprises iron, cobalt, nickel, gadolinium, erbium, aluminium, and alloys thereof.

11. The article according to claim 9 or claim 10, wherein the first portion comprises a thermal insulation material.

12. The article according to claim 11, wherein the thermal insulation material comprises at least one of aerogel, paper, plastics, or composites thereof.

13. The article according to claim 11 or claim 12, wherein the thermal conductivity of the first portion is less than 0.050 w / m.k.

14. The article according to any of claims 9 to 13, wherein the Curie temperature of the heating element does not exceed 500 degrees Celsius.

15. The article according to any of claims 1 to 14, wherein a wall thickness of the heating element is less than 0.5 mm.

16. The article according to any of claims 1 to 15, wherein the cross section of the heating element is in an 'e' shape or spiral shape.

17. The article according to any of claims 1 to 16, comprising a plurality of segments of aerosol generating material arranged along a longitudinal direction of the aerosol generation article, and wherein each segment of aerosol generating material is correspondingly provided with one heating element.

18. An aerosol provision system, comprising an aerosol provision device and the article according to any of claims 1 to 17.

19. The aerosol provision system according to claim 18; wherein the aerosol provision device comprises:a heating chamber configured to receive at least a portion of the article; and a coil for generating an electromagnetic field.

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