Aerosol generation

Abstract

To provide a method of generating aerosol, and an aerosol generating system.SOLUTION: An aerosol generating system comprises (i) an aerosol generating article comprising a flavorant, and (ii) an aerosol generating device 100 comprising an induction heater, where during operation the article is inserted into the device, and aerosol is generated by using the induction heater to heat the aerosol generating material to at least 150°C, where at least 1 μg of the flavorant is aerosolized from the aerosol generating material under an airflow of at least 1.50 L / m in a two-second period.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a method for generating an aerosol and an aerosol generation system.

Background Art

[0002] Smoking articles such as cigarettes and cigars burn tobacco during use to generate tobacco smoke. Attempts have been made to provide alternatives to these tobacco-burning articles by creating products that release compounds without combustion. An example of such a product is a heating device that releases compounds by heating a material without burning it. This material may be, for example, tobacco or other non-tobacco products, and may or may not contain nicotine.

Summary of the Invention

[0003] A first aspect of the present invention is an aerosol generation system comprising (i) an aerosol generation article containing a flavorant and (ii) an aerosol generation device equipped with an induction heater, wherein during operation, the article is inserted into the device and an aerosol is generated by heating an aerosol generation material to at least 150°C using the induction heater, and at least 1 μg of the flavorant is aerosolized from the aerosol generation material under an air flow of at least 1.50 L / m for 2 seconds.

[0004] A second aspect of the present invention is a method for generating an aerosol from an aerosol generation material containing a flavorant, the method comprising the step of heating the aerosol generation material to at least 150°C using an induction heater, and at least 1 μg of the flavorant is aerosolized from the aerosol generation material under an air flow of at least 1.50 L / m for 2 seconds.

[0005] A further aspect of the present invention provides an aerosol comprising at least 1 μg of a flavorant, obtainable or obtained by inductively heating an aerosol-forming material at an air flow rate of at least 1.50 L / m for 2 seconds up to at least 150°C.

[0006] A further aspect of the present invention is a method of generating an aerosol from an aerosol-forming material comprising nicotine and an aerosol-forming agent, the method comprising heating the aerosol-forming material to at least 150°C by use of an induction heater, wherein in the aerosol generated under an air flow rate of at least 1.50 L / m for 2 seconds, the weight ratio of flavorant to nicotine is at least approximately 2.5:1, preferably at least 6:1.

[0007] Another further aspect of the present invention is an aerosol-generating system comprising (i) an aerosol-generating article comprising an aerosol-forming material comprising nicotine and an aerosol-forming agent, and (ii) an aerosol-generating device provided with an induction heater, wherein in operation, the article is inserted into the device and an aerosol is generated by heating the aerosol-forming material to at least 150°C by use of the induction heater, and wherein in the aerosol generated under an air flow rate of at least 1.50 L / m for 2 seconds, the weight ratio of flavorant to nicotine is at least approximately 2.5:1, preferably at least 6:1.

[0008] A further aspect of the present invention provides an aerosol comprising a flavorant and nicotine, wherein the weight ratio of flavorant to nicotine is at least approximately 2.5:1, preferably at least 6:1, and which is obtainable or obtained by inductively heating an aerosol-forming material at an air flow rate of at least 1.50 L / m for 2 seconds up to at least 150°C.

[0009] The features described herein in relation to one aspect of the present invention are clearly disclosed in combination with other aspects, where applicable.

[0010] Further features and advantages of the present invention will become apparent from the following description of preferred embodiments of the invention, which is given by way of example only and with reference to the accompanying drawings.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

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Figure 6A

Figure 6B

Figure 7A

Figure 7B

Figure 8A

Figure 8B

Figure 9

Figure 10

Figure 11

DETAILED DESCRIPTION OF THE INVENTION

[0012] As used herein, the term "aerosol generating material" includes materials that typically provide volatile components when heated, usually in the form of an aerosol. The aerosol generating material includes any tobacco-containing material, such as one or more of tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, or tobacco substitutes. Also, other non-tobacco products are included as aerosol generating materials, and depending on the product, they may or may not contain nicotine. The aerosol generating material may be in the form of, for example, a solid, liquid, gel, wax, etc. Also, the aerosol generating material may be, for example, a combination or mixture of materials. Also, the aerosol generating material may be known as a "smoking material" or an "aerosolizable material".

[0013] Devices are known that form an aerosol that can be inhaled, usually without burning or combusting the aerosol generating material, by heating the aerosol generating material to volatilize at least one component of the aerosol generating material. Such devices may be described as "aerosol generating devices", "aerosol supply devices", "non-combustion heating devices", "tobacco heated product devices", or "tobacco heating devices" or the like. Similarly, there are so-called e-cigarette devices that vaporize an aerosol generating material, usually in liquid form (which may or may not contain nicotine). The aerosol generating material may be in the form of a rod, cartridge, or cassette that can be inserted into the device, or may be provided as part of it. The heater that heats and volatilizes the aerosol generating material may be provided as a "permanent" part of the device.

[0014] An aerosol generating device can receive and heat an article containing an aerosol generating material. In this regard, an "article" is a component that comprises or contains an aerosol generating material during use and is heated to volatilize the aerosol generating material and optionally other components in use. A user may insert the article into the aerosol generating device before the aerosol generating device is heated such that an aerosol that the user will later inhale is generated. The article may be of a predetermined or specific size configured to be disposed, for example, within a heating chamber of a device sized to receive the article.

[0015] The inventors have found that the use of an induction heater enables more rapid heating and higher controllability of the heat profile. The heat profile affects the state and composition of the aerosol.

[0016] As described above, one aspect of the present invention is a method of generating an aerosol from an aerosol generating material containing a flavorant, the method comprising heating the aerosol generating material to at least 150°C by use of an induction heater, and aerosolizing at least 1 μg of the flavorant from the aerosol generating material under an air flow of at least 1.50 L / m for 2 seconds.

[0017] Optionally, at least 100 μg, preferably at least 200 μg, or at least 500 μg of the flavorant is aerosolized from the aerosol generating material under an air flow of at least 1.50 L / m for 2 seconds.

[0018] Optionally, less than approximately 1.5 mg, less than approximately 1 mg, or less than approximately 750 μg of the flavorant is aerosolized from the aerosol generating material under an air flow of at least 1.50 L / m for 2 seconds.

[0019] Optionally, at least 10 μg, preferably at least 30 μg, 50 μg, or 100 μg of nicotine is aerosolized from the aerosol - forming material under an air flow of at least 1.50 L / m for 2 seconds. Optionally, less than approximately 200 μg, preferably less than approximately 150 μg, or less than approximately 125 μg of nicotine is aerosolized from the aerosol - forming material under an air flow of at least 1.50 L / m for 2 seconds.

[0020] In each aspect and embodiment of the invention discussed herein, an air flow of at least 1.55 L / m or 1.60 L / m is preferred. Optionally, the air flow may be less than approximately 2.00 L / m, 1.90 L / m, 1.80 L / m, or 1.70 L / m. Optionally, the air flow may be approximately 1.65 L / m.

[0021] Optionally, the flavorant comprises menthol (or consists essentially of menthol or consists of menthol).

[0022] Optionally, the aerosol - forming material contains nicotine, and in the generated aerosol, the weight ratio of flavorant to nicotine is at least approximately 2.5:1, preferably at least 3:1, 3.5:1, 4:1, 5:1, 5.5:1, or 6:1. Optionally, this ratio may be less than approximately 20:1 or 17:1.

[0023] Optionally, the aerosol - forming material contains an aerosol - forming agent, and the aerosol - forming agent may preferably contain glycerol (or may consist essentially of glycerol or may consist of glycerol). Optionally, at least 10 μg, preferably at least 100 μg, 300 μg, or 500 μg of the aerosol - forming agent is aerosolized from the aerosol - forming material under an air flow of at least 1.50 L / m for 2 seconds.

[0024] Optionally, the aerosol - generating material is a solid or gel material. That is, this method may be a method for generating an aerosol from a tobacco - heating product, also known as a non - combustion heating device. Optionally, the aerosol - generating material contains tobacco. Optionally, the aerosol - generating material is a solid and contains tobacco.

[0025] Optionally, the aerosol - generating material contains reconstituted tobacco material. In some cases, it contains approximately 220 mg to approximately 400 mg, or consists of approximately 220 mg to approximately 400 mg. In some cases, it contains approximately 220 mg to approximately 300 mg, preferably approximately 240 mg to approximately 280 mg, preferably approximately 260 mg of reconstituted tobacco material. In some other cases, it contains approximately 320 mg to approximately 400 mg, preferably approximately 320 mg to approximately 370 mg, preferably approximately 340 mg of reconstituted tobacco material.

[0026] Optionally, the aerosol - generating material (which may include tobacco material, preferably the recycled tobacco material discussed in the previous paragraph) may have a nicotine content of approximately 5 mg / g to 15 mg / g (dry weight basis), preferably approximately 7 mg / g to 12 mg / g. Optionally, the aerosol - generating material (which may include tobacco material) may have an aerosol - generating agent (preferably glycerol) content of approximately 130 mg / g to 170 mg / g, preferably approximately 145 mg / g to 155 mg / g (all on a dry weight basis). Optionally, the aerosol - generating material may have a moisture content of approximately 5 - 8 wt% (wet weight basis). Optionally, the aerosol - generating material contains at least approximately 1.5 mg of nicotine, preferably at least approximately 1.7 mg, 1.8 mg, or 1.9 mg of nicotine. Optionally, the aerosol - generating material contains at least approximately 25 mg of the aerosol - generating agent, preferably at least approximately 30 mg, 32 mg, 34 mg, or 36 mg of the aerosol - generating agent, and the aerosol - generating agent may optionally contain glycerol or may consist of glycerol. Optionally, the aerosol - generating material contains an aerosol - generating agent and nicotine in a weight ratio of at least 10:1, preferably at least 12:1, 14:1, or 16:1.

[0027] Optionally, the aerosol - generating material (which may include tobacco material, preferably the recycled tobacco material as described above) contains approximately 10 mg / g to 50 mg / g of flavorant (wet weight basis). Preferably, this material may contain approximately 20 mg / g to 40 mg / g, more preferably approximately 25 mg / g to 35 mg / g of flavorant. Optionally, the flavorant may contain menthol (or may consist essentially of menthol or may consist of menthol).

[0028] Optionally, the density of the aerosol is at least 0.2 μg / cc, 0.3 μg / cc, or 0.4 μg / cc. Optionally, the density of the aerosol is less than approximately 2.5 μg / cc, 2.0 μg / cc, 1.5 μg / cc, or 1.0 μg / cc.

[0029] As defined herein, the term "mean particle or droplet size" represents the average size of the solid or liquid components of an aerosol (e.g., the components suspended in a gas). When the aerosol contains suspended droplets and suspended solid particles, this term represents the average size of all components integrally.

[0030] Optionally, the mean particle or droplet size of the generated aerosol may be less than approximately 900 nm, 800 nm, 700 nm, 600 nm, 500 nm, 450 nm, or 400 nm. Optionally, the mean particle or droplet size may be greater than approximately 50 nm or 100 nm.

[0031] Another aspect of the present invention provides an aerosol generating system comprising (i) an aerosol generating article containing a flavorant and (ii) an aerosol generating device equipped with an induction heater, wherein during operation, the article is inserted into the device and the aerosol is generated by heating the aerosol generating material to at least 150 °C using the induction heater, and at least 1 μg of the flavorant is aerosolized from the aerosol generating material under an air flow of at least 1.50 L / m for 2 seconds.

[0032] Optionally, the aerosol generating material is a solid or gel material. That is, this system may be a tobacco heating product also known as a non-combustion heating device. Optionally, the aerosol generating material contains tobacco. Optionally, the aerosol generating material is solid and contains tobacco.

[0033] Optionally, during operation, an article is inserted into the device, and aerosol is generated by heating an aerosol-generating material to at least 150 °C using an induction heater. The total amount of flavor aerosolized from the aerosol-generating material in at least seven 2-second intervals with an air flow of at least 1.50 L / m is at least approximately 1.5 mg. The total amount of flavor aerosolized from the aerosol-generating material in at least nine 2-second intervals with an air flow of at least 1.50 L / m is preferably at least approximately 2.3 mg, 2.4 mg, 2.5 mg, or 2.6 mg.

[0034] Optionally, during operation, an article is inserted into the device, and aerosol is generated by heating an aerosol-generating material to at least 150 °C using an induction heater. In the aerosol generated in at least seven 2-second intervals with an air flow of at least 1.50 L / m, the average density of the aerosol is at least 0.6 μg / cc, preferably at least 0.8 μg / cc. In other words, the article may be configured to generate at least 4.2 μg / cc, preferably at least 5.6 μg / cc of aerosol in seven 2-second intervals.

[0035] Optionally, during operation, an article is inserted into the device, and aerosol is generated by heating an aerosol-generating material to at least 150 °C using an induction heater. In the aerosol generated in at least nine 2-second intervals with an air flow of at least 1.50 L / m, the average density of the aerosol is at least 0.4 μg / cc, preferably at least 0.6 μg / cc. In other words, the article may be configured to generate at least 3.6 μg / cc, preferably at least 5.4 μg / cc of aerosol in nine 2-second intervals.

[0036] The heater in the device is an induction heater. The susceptor defines a cylindrical chamber into which an article is inserted during use such that the aerosol - generating material can be heated by the susceptor. The length of the cylindrical chamber may be approximately 40 mm to 60 mm, approximately 40 mm to 50 mm, approximately 40 mm to 45 mm, or approximately 44.5 mm. The diameter of the cylindrical chamber may be approximately 5.0 mm to 6.5 mm, preferably approximately 5.35 mm to 6.0 mm, preferably approximately 5.5 mm to 5.6 mm, preferably approximately 5.55 mm.

[0037] The aerosol - generating article may include an aerosol - generating material and a wrapper disposed around the aerosol - generating material. Optionally, the aerosol - generating material includes tobacco. The tobacco may be any suitable solid tobacco such as a single grade or blend, cut - rag or whole - leaf, ground tobacco, tobacco fiber, shredded tobacco, extruded tobacco, tobacco stem, and / or reconstituted tobacco. The tobacco may be of any type including Virginia, and / or Burley, and / or Oriental tobacco.

[0038] The aerosol - generating material may be a rod of the aerosol - generating material. A wrapper may be constituted by a tube disposed around the rod of the aerosol - generating material. As used herein, the term "rod" generally refers to an elongate body that can have any suitable shape for use in an aerosol - generating device. Optionally, the rod is substantially cylindrical. The length of the cylindrical body of the aerosol - generating material may be approximately 34 mm to 50 mm, preferably approximately 38 mm to 46 mm, preferably approximately 42 mm. The diameter of the cylindrical body of the aerosol - generating material is approximately 5.0 mm to 6.0 mm, preferably approximately 5.25 mm to 5.45 mm, preferably approximately 5.35 mm to 5.40 mm, preferably approximately 5.39 mm. Optionally, the aerosol - generating material may fill at least approximately 85% of the void defined by the susceptor.

[0039] The aerosol generating material may include, in addition to the flavorant, an aerosol generating agent, a binder, a filler, nicotine (which may be included in the tobacco material), and one or more of one or more other flavorants.

[0040] The aerosol generating article may further comprise one or more of a filter, a cooling element, and a mouthpiece.

[0041] Optionally, the aerosol generating article comprises a wrapper that at least partially surrounds one or more of the filter, the cooling element, the mouthpiece, and other components of the article that include one or more of the aerosol generating material. Optionally, the wrapper may surround the outer periphery of each of these components. The thickness of the wrapper may be approximately 10 μm to 50 μm, preferably approximately 15 μm to 45 μm or 20 μm to 40 μm. Optionally, the wrapper may comprise a paper layer, and optionally, its basis weight is at least approximately 10 g·m -2 ⁻², 15 g·m -2 ⁻², 20 g·m -2 ⁻², or 25 g·m -2 ⁻² to approximately 50 g·m -2 ⁻², 45 g·m -2 ⁻², 40 g·m -2 ⁻², or 35 g·m -2 ⁻². Optionally, the wrapper may comprise a non-combustible layer such as a metal foil. Preferably, the wrapper may comprise an aluminum foil layer, and its thickness may be approximately 3 μm to 15 μm, preferably approximately 5 μm to 10 μm, preferably approximately 6 μm. The wrapper may have a laminated structure, and optionally, this laminated structure may comprise at least one paper layer and at least one non-combustible layer.

[0042] In some cases, the wrapper is provided with a ventilation opening. In some cases, the ventilation rate provided by this hole (i.e., the amount of suction air flowing through the ventilation hole as a percentage of the aerosol volume) may be approximately 5% - 85%, preferably at least 20%, 35%, 50%, or 60%. The ventilation opening may be provided in a portion of the wrapper that surrounds one or more of the filter, the cooling element, and the mouthpiece.

[0043] Referring now to the drawings, FIG. 1 shows an example of an aerosol generating device 100 that generates an aerosol from an aerosol generating medium / material. Generally, the device 100 may be adapted to heat a replaceable article 110 containing an aerosol generating medium to generate an aerosol or other inhalable medium for inhalation by a user of the device 100.

[0044] The device 100 comprises a housing 102 (in the form of an outer cover) that surrounds and houses various components of the device 100. The device 100 has an opening 104 at one end for inserting the article 110 and heating it by a heating assembly. In use, the article 110 may be inserted in whole or in part into the heating assembly and heated by one or more components of the heating assembly.

[0045] The device 100 of this example comprises a first end member 106 having a lid 108 that can close the opening 104 by movement relative to the first end member 106 when the article 110 is not in a predetermined position. In FIG. 1, the lid 108 is shown in an open configuration, but the cap 108 can also be moved to a closed configuration. For example, the user may slide the lid 108 in the direction of arrow "A".

[0046] Further, the device 100 may comprise a user-operable control element 112, such as a button or a switch, that operates the device 100 when pressed. For example, the user may turn on the device 100 by operating the switch 112.

[0047] In addition, the device 100 may include electrical components such as a socket / port 114 that can receive a cable to charge the battery of the device 100. For example, the socket 114 may be a charging port such as a USB charging port. In some examples, the socket 114 may be used for data transfer between the device 100 and another device such as a computer device as an addition or alternative to the above.

[0048] FIG. 2 shows the device 100 of FIG. 1 with the outer cover 102 removed and no article 110 present. The device 100 defines a longitudinal axis 134.

[0049] As shown in FIG. 2, the first end member 106 is disposed at one end of the device 100, and the second end member 116 is disposed at the opposite end of the device 100. The first and second end members 106, 116 together at least partially define the end face of the device 100. For example, the bottom surface of the second end member 116 at least partially defines the bottom surface of the device 100. Also, the edge of the outer cover 102 may define a part of the end face. Also, in this example, the lid 108 defines a part of the upper surface of the device 100.

[0050] The end of the device closest to the opening 104 is considered to be the proximal end (or mouth end) of the device 100 because it is closest to the user's mouth when in use. When in use, the user inserts the article 110 into the opening 104, operates the user control 112 to start heating the aerosol-generating material, and utilizes the aerosol generated in the device. Thereby, the aerosol flows through the device 100 along the flow path towards the proximal end of the device 100.

[0051] The other end of the device farthest from the opening 104 is considered to be the distal end of the device 100 because it is the end farthest from the user's mouth when in use. When the user utilizes the aerosol generated in the device, the aerosol flows in a direction away from the distal end of the device 100.

[0052] Device 100 further includes a power source 118. The power source 118 may be a battery such as, for example, a rechargeable battery or a non-rechargeable battery. Examples of suitable batteries include, for example, lithium batteries (such as lithium-ion batteries), nickel batteries (such as nickel-cadmium batteries), and alkaline batteries. The battery is electrically coupled to the heating assembly, supplies power as needed, and heats the aerosol-forming material under the control of a control device (not shown). In this example, the battery is connected to a central support portion 120 that holds the battery 118 in a predetermined position.

[0053] The device further includes at least one electronic device module 122. The electronic device module 122 may include, for example, a printed wiring board (PCB). The PCB 122 may support at least one control device such as a processor and a memory. Further, the PCB 122 may include one or more electrical tracks that electrically and integrally connect various electronic components of the device 100. For example, battery terminals may be electrically connected to the PCB 122 so that power can be distributed throughout the device 100. Also, the socket 114 may be electrically coupled to the battery via an electrical track.

[0054] In exemplary device 100, the heating assembly is an induction heating assembly and includes various components for heating the aerosol - generating material of article 110 by an induction heating process. Induction heating is a process of heating a conductor (such as a susceptor) by electromagnetic induction. The induction heating assembly may include an induction element (e.g., one or more inductor coils) and a device for passing an alternating current or other fluctuating current through the induction element. The fluctuating current in the induction element generates a fluctuating magnetic field. The fluctuating magnetic field penetrates a susceptor suitably disposed relative to the induction element and generates eddy currents inside the susceptor. Since the susceptor has an electrical resistance to the eddy currents, the susceptor is heated by Joule heating due to the flow of the eddy currents through this resistance. Also, when the susceptor includes a ferromagnetic material such as iron, nickel, or cobalt, heat may also be generated by magnetic hysteresis loss in the susceptor, i.e., the fluctuating orientation of magnetic dipoles in the magnetic material as a result of alignment with the fluctuating magnetic field. In induction heating, heat is generated inside the susceptor, for example, as compared with heating by conduction, enabling rapid heating. Further, since no physical contact is required between the induction heater and the susceptor, the degrees of freedom in configuration and application are increased.

[0055] The induction heating assembly of exemplary device 100 includes a susceptor construct 132 (referred to herein as the "susceptor"), a first inductor coil 124, and a second inductor coil 126. The first and second inductor coils 124, 126 are formed of an electrically conductive material. In this example, the first and second inductor coils 124, 126 are constituted by a Litz wire / cable wound in a helical shape to provide helical inductor coils 124, 126. The Litz wire includes a plurality of individual wires that are individually insulated and form a single wire by an integral twist. The Litz wire is designed to suppress the skin - effect loss of the conductor. In exemplary device 100, the first and second inductor coils 124, 126 are constituted by a copper Litz wire having a rectangular cross - section. In other examples, the Litz wire may have a cross - section of other shapes, such as circular.

[0056] The first inductor coil 124 is configured to generate a first alternating magnetic field that heats a first portion of the susceptor 132, and the second inductor coil 126 is configured to generate a second alternating magnetic field that heats a second portion of the susceptor 132. In this example, the first inductor coil 124 is adjacent to the second inductor coil 126 in a direction along the longitudinal axis 134 of the device 100 (i.e., the first and second inductor coils 124, 126 do not overlap). The susceptor structure 132 may comprise a single susceptor or two or more separate susceptors. The ends 130 of the first and second inductor coils 124, 126 are connectable to the PCB 122.

[0057] Naturally, in some examples, the first and second inductor coils 124, 126 may have at least one characteristic that is different from each other. For example, the first inductor coil 124 may have at least one characteristic that is different from the second inductor coil 126. More specifically, in one example, the first inductor coil 124 may have an inductance value that is different from the second inductor coil 126. In FIG. 2, the first and second inductor coils 124, 126 have different lengths such that the portion of the first inductor coil 124 wound around the susceptor 132 is smaller than the second inductor coil 126. For this reason, the first inductor coil 124 may have a different number of turns than the second inductor coil 126 (assuming that the spacing between individual turns is substantially the same). In yet another example, the first inductor coil 124 may be composed of a different material than the second inductor coil 126. In some examples, the first and second inductor coils 124, 126 may be substantially identical.

[0058] In this example, the first inductor coil 124 and the second inductor coil 126 are wound in opposite directions. This can be useful when the two inductor coils operate at different timings. For example, after the first inductor coil 124 first operates to heat the first part of the article 110, the second inductor coil 126 may operate to heat the second part of the article 110. Winding the coils in opposite directions helps to suppress the current induced in the non-operating coil when used in conjunction with a specific type of control circuit. In FIG. 2, the first inductor coil 124 is a right-handed helix, and the second inductor coil 126 is a left-handed helix. However, in another embodiment, the inductor coils 124, 126 may be wound in the same direction, or the first inductor coil 124 may be a left-handed helix and the second inductor coil 126 may be a right-handed helix.

[0059] Since the susceptor 132 in this example is hollow, it defines a receptacle for receiving the aerosol-generating material. For example, the article 110 can be inserted into the susceptor 132. In this example, the susceptor 120 is tubular with a circular cross-section.

[0060] In this example, the first coil 124 (the one closer to the mouth end) is wound around approximately one-third of the length of the susceptor 132, and the second coil 126 (the one closer to the distal end) is wound around approximately two-thirds of the length of the susceptor 132. That is, the ratio of the coil lengths is 1:2, and this coil length represents the axial distance along the axis around which the coil is wound. Other length ratios may be adopted. For example, in some cases, the ratio of the coil length of the first coil 124 to the second coil may be in the range of approximately 1:4 to approximately 4:1.

[0061] The device 100 of FIG. 2 is generally tubular and further includes a heat insulating member 128 that can at least partially surround the susceptor 132. The heat insulating member 128 may be made of any heat insulating material such as, for example, plastic. In this particular example, the heat insulating member is made of polyetheretherketone (PEEK). The heat insulating member 128 can help insulate various components of the device 100 from the heat generated in the susceptor 132.

[0062] Also, the heat insulating member 128 can support all or part of the first and second inductor coils 124, 126. For example, as shown in FIG. 2, the first and second inductor coils 124, 126 are arranged around the heat insulating member 128 and are in contact with the radially outer surface of the heat insulating member 128. In some examples, the heat insulating member 128 does not contact the first and second inductor coils 124, 126. For example, there may be a small gap between the outer surface of the heat insulating member 128 and the inner surfaces of the first and second inductor coils 124, 126.

[0063] In a particular example, the susceptor 132, the heat insulating member 128, and the first and second inductor coils 124, 126 are coaxial about the central longitudinal axis of the susceptor 132.

[0064] FIG. 3 is a partial cross-sectional side view of the device 100. In this example, there is an outer cover 102. The rectangular cross-sectional shapes of the first and second inductor coils 124, 126 are more clearly visualized.

[0065] The device 100 further includes a support portion 136 that engages one end of the susceptor 132 to hold the susceptor 132 in a predetermined position. The support portion 136 is connected to the second end member 116.

[0066] Also, the device may include a second printed wiring board 138 associated within the control element 112.

[0067] Device 100 further includes a second lid / cap 140 and a spring 142 disposed on the distal end side of the device 100. The spring 142 enables access to the susceptor 132 upon opening of the second lid 140. The user may clean the susceptor 132 and / or the support portion 136 by opening the second lid 140.

[0068] Device 100 further includes an expansion chamber 144 extending from the proximal end of the susceptor 132 towards the opening 140 of the device. At least a part of a holding clip 146 for holding in contact with an article 110 received within the device 100 is disposed within the expansion chamber 144. The expansion chamber 144 is connected to the end member 106.

[0069] FIG. 4 is an exploded view of the device 100 of FIG. 1 with the outer cover 102 omitted.

[0070] FIG. 5A shows a partial cross-section of the device 100 of FIG. 1. FIG. 5B shows an enlarged view of a region of FIG. 5A. FIGS. 5A and 5B show an article 110 received within the susceptor 132, and this article 110 is dimensioned such that its outer surface contacts the inner surface of the susceptor 132. Thereby, heating is most efficient. The article 110 of this example includes an aerosol-generating material 110a. The aerosol-generating material 110a is disposed within the susceptor 132. Also, the article 110 may include other components such as a filter, a packaging material, and / or a cooling structure.

[0071] FIG. 5B shows that, when measured in a direction perpendicular to the longitudinal axis 158 of the susceptor 132, the outer surface of the susceptor 132 is spaced apart from the inner surfaces of the inductor coils 124, 126 by a distance 150. In a specific example, the distance 150 is approximately 3 mm to 4 mm, approximately 3 to 3.5 mm, or approximately 3.25 mm.

[0072] Figure 5B shows that the outer surface of the heat insulating member 128 is separated from the inner surfaces of the inductor coils 124 and 126 by a distance 152, measured in a direction perpendicular to the longitudinal axis 158 of the susceptor 132. In a specific example, the distance 152 is approximately 0.05 mm. In another example, the distance 152 is substantially 0 mm such that the inductor coils 124 and 126 are in contact with the heat insulating member 128.

[0073] In one example, the susceptor 132 has a wall thickness 154 of approximately 0.025 mm to 1 mm or approximately 0.05 mm.

[0074] In one example, the susceptor 132 has a length of approximately 40 mm to 60 mm, approximately 40 to 45 mm, or approximately 44.5 mm.

[0075] In one example, the heat insulating member 128 has a wall thickness 156 of approximately 0.25 mm to 2 mm, 0.25 to 1 mm, or approximately 0.5 mm.

[0076] The end member 116 may further house one or more electrical components such as the socket / port 114. In this example, the socket 114 is a female USB charging port.

[0077] Referring to FIGS. 6A and 6B, which are a partial cutaway cross-sectional view and a perspective view of an example of the aerosol-generating article 110. In use, the article 110 is removably inserted into the device 100 at the opening 104 of the device 100 shown in FIG. 1.

[0078] An article 110 of one example is in the form of a substantially cylindrical rod including a body of aerosol - generating material 303 and a filter assembly 305 in the form of a rod. The filter assembly 305 comprises three segments: a cooling segment 307, a filter segment 309, and a mouth - end segment 311. The article 110 has a first end 313, also known as the mouth - end or proximal end, and a second end 315, also known as the distal end. The body of the aerosol - generating material 303 is disposed on the side of the distal end 315 of the article 110. In one example, the cooling segment 307 is disposed adjacent to the body of the aerosol - generating material 303 between the body of the aerosol - generating material 303 and the filter segment 309 so as to be in contact with the aerosol - generating material 303 and the filter segment 309. In other examples, there may be a separation between the body of the aerosol - generating material 303 and the cooling segment 307 and between the body of the aerosol - generating material 303 and the filter segment 309. The filter segment 309 is disposed between the cooling segment 307 and the mouth - end segment 311. The mouth - end segment 311 is disposed adjacent to the filter segment 309 on the side of the proximal end 313 of the article 110. In one example, the filter segment 309 is in contact with the mouth - end segment 311. In one embodiment, the total length of the filter assembly 305 is from 37 mm to 45 mm. More preferably, the total length of the filter assembly 305 is 41 mm.

[0079] In one embodiment, the body of the aerosol - generating material 303 includes tobacco. However, in each of the other embodiments, the body of the aerosol - generating material 303 may consist of tobacco, may consist substantially entirely of tobacco, may include tobacco and aerosol - generating materials other than tobacco, may include aerosol - generating materials other than tobacco, or may not include tobacco. The aerosol - generating material may include an aerosol - forming agent such as glycerol.

[0080] In one example, the length of the body of the aerosol generating material 303 is from 34 mm to 50 mm, more preferably from 38 mm to 46 mm, and even more preferably 42 mm.

[0081] In one example, the overall length of the article 110 is from 71 mm to 95 mm, more preferably from 79 mm to 87 mm, and even more preferably 83 mm.

[0082] The axial end of the body of the aerosol generating material 303 is visible at the distal end 315 of the article 110. However, in other embodiments, the distal end 315 of the article 110 may comprise an end member (not shown) that covers the axial end of the body of the aerosol generating material 303.

[0083] The body of the aerosol generating material 303 is disposed substantially around the entire circumference of the filter assembly 305 to surround the filter assembly 305 and is joined to the filter assembly 305 by an annular tip paper (not shown) that extends along a portion of the length of the body of the aerosol generating material 303. In one example, the tip paper is composed of 58 GSM standard tip base paper. In one example, the length of the tip paper is from 42 mm to 50 mm, more preferably 46 mm.

[0084] In one example, the cooling segment 307 is an annular tube that is disposed around the void and defines the internal void. The void provides a chamber through which the heat - volatilized components generated from the body of the aerosol generating material 303 flow. The cooling segment 307 is hollow and provides an aerosol storage chamber with sufficient rigidity to withstand the axial compressive forces and bending moments that may occur during manufacturing and during use of the article 110 during insertion into the device 100. In one example, the wall thickness of the cooling segment 307 is about 0.29 mm.

[0085] The cooling segment 307 provides a physical displacement between the aerosol - generating material 303 and the filter segment 309. The physical displacement provided by the cooling segment 307 will result in a thermal gradient across the entire length of the cooling segment 307. In one example, the cooling segment 307 is configured to provide a temperature difference of at least 40°C between the heating and volatilizing component entering the first end of the cooling segment 307 and the heating and volatilizing component exiting the second end of the cooling segment 307. In one example, the cooling segment 307 is configured to provide a temperature difference of at least 60°C between the heating and volatilizing component entering the first end of the cooling segment 307 and the heating and volatilizing component exiting the second end of the cooling segment 307. This temperature difference across the entire length of the cooling element 307 protects the temperature - sensitive filter segment 309 from the high temperature of the aerosol - generating material 303 when the device 100 is heated by the heating assembly. If no physical displacement is provided between the filter segment 309 and the body of the aerosol - generating material 303 and the heating element of the device 100, the temperature - sensitive filter segment 309 may be damaged during use and may not be able to effectively perform its necessary functions.

[0086] In one example, the length of the cooling segment 307 is at least 15 mm. In one example, the length of the cooling segment 307 is from 20 mm to 30 mm, more particularly from 23 mm to 27 mm, more particularly from 25 mm to 27 mm, more particularly 25 mm.

[0087] The cooling segment 307 is made of paper. This means that it is made of a material that does not produce the compounds of concern (e.g., toxic compounds) when in use adjacent to the heater assembly of the device 100. In one example, the cooling segment 307 is manufactured by a spirally wound paper tube that provides a hollow internal chamber to maintain mechanical rigidity. The spirally wound paper tube can meet the strict dimensional accuracy requirements of the high - speed manufacturing process with respect to the tube length, outer diameter, roundness, and straightness.

[0088] In another example, the cooling segment 307 is a recess made of a rigid plug wrap or chip paper. This rigid plug wrap or chip paper is manufactured to have sufficient rigidity to withstand the axial compressive forces and bending moments that can occur during manufacturing and during the use of the article 110 during insertion into the device 100.

[0089] For each example of the cooling segment 307, the dimensional accuracy of the cooling segment is sufficient to meet the dimensional accuracy requirements of the high-speed manufacturing process.

[0090] The filter segment 309 may be formed of any filter material sufficient to remove one or more volatile compounds from the heated and volatilized components of the aerosol-generating material. In one example, the filter segment 309 is composed of a monoacetate material such as cellulose acetate. The filter segment 309 provides cooling and irritation suppression of the heated and volatilized components without reducing the amount of the heated and volatilized components to a level that is insufficient for the user.

[0091] The density of the cellulose acetate tow material of the filter segment 309 controls the pressure drop across the entire filter segment 309, which in turn controls the draw resistance of the article 110. Therefore, the selection of the material of the filter segment 309 is important for controlling the draw resistance of the article 110. Also, the filter segment 309 performs a filtering function within the article 110.

[0092] In one example, the filter segment 309 is composed of an 8Y15 grade filter tow material, which provides a filtering effect on the heated and volatilized material and, at the same time, suppresses the size of the condensed aerosol droplets generated from the heated and volatilized material, resulting in suppressing the irritation and the impact on the throat of the heated and volatilized material to a sufficient level.

[0093] The presence of the filter segment 309 provides a heat insulation effect by further cooling the heating and volatile components exiting the cooling segment 307. Due to this further cooling effect, the contact temperature of the user's lips with the surface of the filter segment 309 decreases.

[0094] One or more fragrances may be added to the filter segment 309 by direct injection of the flavored liquid into the filter segment 309 or by embedding or disposing one or more flavored fragile capsules or other fragrance carriers within the cellulose acetate tow of the filter segment 309.

[0095] In one example, the filter segment 309 has a length of 6 mm to 10 mm, more preferably 8 mm.

[0096] The mouth-end segment 311 is an annular tube that is disposed around the void and defines the internal void. The void provides a chamber for the heating and volatile components flowing from the filter segment 309. The mouth-end segment 311 is hollow and provides an aerosol storage chamber with sufficient rigidity to withstand the axial compressive forces and bending moments that may occur during manufacturing and during use of the article during insertion into the device 100. In one example, the wall thickness of the mouth-end segment 311 is about 0.29 mm.

[0097] In one example, the length of the mouth-end segment 311 is 6 mm to 10 mm, more preferably 8 mm. In one example, the thickness of the mouth-end segment is 0.29 mm.

[0098] The mouth-end segment 311 may be manufactured by a helically wound paper tube that provides a hollow internal chamber that maintains the required mechanical rigidity. The helically wound paper tube can meet the stringent dimensional accuracy requirements of a high-speed manufacturing process with respect to the tube length, outer diameter, roundness, and straightness.

[0099] The mouth-end segment 311 provides a function of preventing direct contact of the liquid condensate accumulating at the outlet of the filter segment 309 with the user.

[0100] Of course, in one example, the mouth-end segment 311 and the cooling segment 307 may be formed of a single tube, and the filter segment 309 may be disposed within the tube to separate the mouth-end segment 311 and the cooling segment 307.

[0101] A ventilation region 317 is provided in the article 110 to allow air to flow from the outside of the article 110 to the inside of the article 110. In one example, the ventilation region 317 is in the form of one or more ventilation holes 317 formed through the outer layer of the article 110. The ventilation holes may be disposed in the cooling segment 307 to assist in cooling the article 301. In one example, it is preferable that the ventilation region 317 includes one or more rows of holes, and in a cross-section substantially perpendicular to the longitudinal axis of the article 110, each row of holes is disposed around the entire circumference of the article 110.

[0102] In one example, 1 to 4 rows of ventilation holes provide ventilation for the article 110. Each row of ventilation holes may have 12 to 36 ventilation holes 317. The diameter of the ventilation holes 317 may be, for example, 100 to 500 μm. In one example, the axial separation between rows of the ventilation holes 317 is 0.25 mm to 0.75 mm. It is more preferable that the axial separation between rows of the ventilation holes 317 is 0.5 mm.

[0103] In one example, the ventilation holes 317 are of uniform size. In another example, the ventilation holes 317 are of different sizes. The ventilation holes can be configured using any suitable technique, such as one or more of techniques such as laser technology, mechanical perforation of the cooling segment 307, or pre-perforation of the cooling segment 307 before being formed as the article 110. The ventilation holes 317 are arranged to effectively cool the article 110.

[0104] In one example, the row of ventilation holes 317 is disposed at least 11 mm from the proximal end 313 of the article. The ventilation holes are more preferably disposed 17 mm to 20 mm from the proximal end 313 of the article 110. The location of the ventilation holes 317 is arranged such that the user does not block the ventilation holes 317 when using the article 110.

[0105] By providing the row of ventilation holes 17 mm to 20 mm from the proximal end 313 of the article 110, when the article 110 is fully inserted into the device 100 as shown in FIG. 1, it is convenient that the ventilation holes 317 can be disposed outside the device 100. By disposing the ventilation holes outside the device, non-heated air can enter the article 110 through the ventilation holes from outside the device 100, assisting in cooling the article 110.

[0106] The length of the cooling segment 307 is such that when the article 110 is fully inserted into the device 100, the cooling segment 307 is partially inserted into the device 100. The length of the cooling segment 307 provides a first function of creating a physical gap between the heater assembly of the device 100 and the thermosensitive filter assembly 309, and a second function such that when the ventilation holes 317 are disposed in the cooling segment and the article 110 is fully inserted into the device 100, they can be disposed outside the device 100. As shown in FIG. 1, most of the cooling element 307 is disposed within the device 100. However, a portion of the cooling element 307 extends out of the device 100. The ventilation holes 317 are disposed in this portion of the cooling element 307 that extends out of the device 100.

[0107] In the illustrated embodiment, the overall length of the article is 83 mm and includes a 42 mm long cylindrical tobacco rod (5.4 mm in diameter) containing approximately 260 mg of aerosol-forming material. The ventilation rate of the article is 75%. This is used in a device having a susceptor that is 44.5 mm long and 5.55 mm in inner diameter.

[0108] In another embodiment (not shown), the overall length of the article is 75 mm and it comprises a 34 mm long cylindrical tobacco rod (6.7 mm in diameter) containing about 340 mg of aerosol - forming material. The ventilation rate of the article may be 60%. This is used in a device having a susceptor that is 36 mm in length and 7.1 mm in inner diameter.

Examples

[0109] In the examples, the devices shown in FIGS. 1 - 5B and the articles shown in FIGS. 6A and 6B described above were respectively adopted.

[0110] The susceptor was assumed to be 44.5 mm in length and 5.55 mm in inner diameter.

[0111] Many aerosol - forming articles were tested, and the data shown below are average values (unless otherwise stated). The overall length of the article is 83 mm and it comprises a 42 mm long cylindrical tobacco rod (5.4 mm in diameter) containing about 260 mg of reconstituted tobacco material with a nicotine content of 0.8 wt% (±0.1 wt%) (DWB), a glycerol content of 15 wt% (±2 wt%) (DWB), and a menthol content of about 3 wt% (WWB). The ventilation rate was 75%.

[0112] The device was assumed to have two pre - programmed heating profiles, which are shown in FIGS. 7A and 7B. In each program, the mouth - end coil is heated first and the distal coil is heated next. FIGS. 8A and 8B show the tobacco temperature in each heating zone for the two pre - programmed heating profiles (for many samples (no smoking)).

[0113] In this example, a simulated puff regime was adopted. In this regime, the first puff occurs 2 seconds after the device is turned on (anticipating the time it takes for the heater to warm the tobacco). Thereafter, a 55 mL, 2 - second draw through the mouthpiece of the device is completed every 30 seconds (i.e., 50 seconds, 80 seconds, 110 seconds, 140 seconds, etc. after the device is turned on), and the airflow for each puff is 1.65 L / min. The heat profile shown in Figure 7A is for a 3 - minute session, and in this regime, 7 puffs are possible (the last puff occurs after the heater is turned off, but there is sufficient heat remaining for aerosol generation). The heat profile shown in Figure 7B is for a 4 - minute session, and in this regime, 9 puffs are possible (again, the last puff occurs after the heater is turned off). (In the profile of Figure 7B, the maximum temperature is lower, resulting in suppressed aerosol generation at the beginning of the session, allowing for a longer session.)

[0114] The average nicotine release from the tested articles is shown in Figure 9. This figure shows the nicotine release per puff and the total nicotine release for each of the heating profiles in Figure 7.

[0115] The average glycerol release from the tested articles is shown in Figure 10. This figure shows the glycerol release per puff and the total glycerol release for each of the heating profiles in Figure 7.

[0116] The average menthol release from the tested articles is shown in Figure 11. This figure shows the menthol release per puff and the total menthol release for each of the heating profiles in Figure 7.

[0117] [Definitions] As used herein, the term "aerosol generating agent" is a chemical substance that promotes the generation of an aerosol. The aerosol generating agent may promote the generation of an aerosol by promoting the initial vaporization of a gas and / or the condensation of a solid and / or liquid aerosol into an inhalable form. In some embodiments, the aerosol generating agent may improve the supply of functional components from the aerosol generating material. Suitable aerosol generating agents include polyols such as sorbitol, glycerol, and glycols such as propylene glycol or triethylene glycol, monohydric alcohols, high-boiling hydrocarbons, acids such as lactic acid, glycerol derivatives, diacetin, triacetin, triethylene glycol diacetate, triethyl citrate, or esters such as myristates including ethyl myristate and isopropyl myristate, and non-polyols such as aliphatic carboxylic acid esters such as methyl stearate, dimethyl dodecanedioate, and dimethyl tetradecanedioate, but are not limited thereto. The aerosol generating agent may preferably contain, consist essentially of, or consist of glycerol, propylene glycol, triacetin, and / or ethyl myristate. Optionally, the aerosol generating agent may contain, consist essentially of, or consist of glycerol and / or propylene glycol.

[0118] As used herein, the terms "flavour" and "flavourant" represent materials that can be used to create a desired flavour or aroma in products for adult consumers, where local regulations permit. These include extracts (e.g., licorice, hydrangea, sassafras leaves, chamomile, fenugreek, cloves, menthol, peppermint, aniseed, cinnamon, herbs, wintergreen, cherry, berry, peach, apple, drambuie, bourbon, scotch, whiskey, spearmint, peppermint, lavender, cardamom, celery, cascarilla, nutmeg, frankincense, bergamot, geranium, honey essence, rose oil, vanilla, lemon oil, orange oil, cassia, caraway, cognac, jasmine, ylang ylang, sage, perilla, pepper, ginger, anise, coriander, coffee, or any species of mint oil of the genus Mentha), flavour enhancers, bitter receptor site blockers, sensory receptor site activators or stimulants, saccharides and / or alternative sugars (e.g., sucralose, acesulfame potassium, aspartame, saccharin, cyclamate, lactose, sucrose, glucose, fructose, sorbitol, or mannitol), and other additives such as charcoal, chlorophyll, minerals, vegetable substances, or breath fresheners. These may be imitation, synthetic or natural ingredients, or mixtures thereof. These may contain natural or NI (Nature Identical) flavours. These may be in any suitable form, e.g., oil, liquid, powder, or gel.

[0119] As used herein, the term "filler" may represent one or more inorganic filler materials such as suitable inorganic adsorbents like calcium carbonate, perlite, vermiculite, diatomaceous earth, colloidal silica, magnesium oxide, magnesium sulfate, magnesium carbonate, and molecular sieves. Alternatively, the term filler may represent one or more organic filler materials such as wood pulp, cellulose, and cellulose derivatives. The filler may contain organic and inorganic filler materials.

[0120] As used herein, the term "binder" may refer to alginate, cellulose or modified cellulose, starch or modified starch, or natural gum. Suitable binders include alginates containing any suitable cation, modified celluloses such as cellulose or hydroxypropyl cellulose and carboxymethyl cellulose, starches or modified starches, polysaccharides such as pectates containing any suitable cation such as sodium, potassium, calcium, or magnesium pectate, xanthan gum, guar gum, and other any suitable natural gums, and mixtures thereof, but are not limited thereto. In some embodiments, the binder comprises one or more alginates selected from sodium alginate, calcium alginate, potassium alginate, or ammonium alginate, consists essentially of one or more alginates, or consists of one or more alginates.

[0121] As used herein, the term "tobacco material" refers to any material containing tobacco or its derivatives. The term "tobacco material" may include one or more of tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, or tobacco substitutes. The tobacco material includes one or more of shredded tobacco, tobacco fiber, cut tobacco, extruded tobacco, tobacco stem, reconstituted tobacco, and / or tobacco extract.

[0122] The tobacco used in the production of tobacco materials may be any suitable tobacco, such as a single grade or blend, cut rag or whole leaf, and may include Virginia, and / or Burley, and / or Oriental. Also, it may be tobacco particles (“fines” or fine particles), expanded tobacco, stems, expanded stems, and other processed stem materials such as cut roll stems. The tobacco material may be ground tobacco or recycled tobacco material. The recycled tobacco material may contain tobacco fibers and may also be formed by molding (a paper-making type method based on a long wire paper machine with post-added tobacco extract) or extrusion.

[0123] All weight percentages (expressed as wt%) described in this specification are calculated on a dry weight basis (DWB) unless otherwise explicitly stated. Also, all weight ratios are calculated on a dry weight basis. The weights cited on a dry weight basis represent the entire extract, slurry, or material other than moisture and may include components that are liquid themselves at room temperature and indoor pressure, such as glycerol. In contrast, weight percentages cited on a wet weight basis (WWB) represent all components including moisture.

[0124] To avoid ambiguity, in this specification, when the term “comprises” is used to define the present invention or features of the present invention, embodiments that can define the present invention or features using the term “consists essentially of” or “consists of” instead of “comprises” are also disclosed.

[0125] The above-described embodiments should be understood as examples useful for explaining the present invention. Other embodiments of the present invention are also conceivable. It is understood that any feature described with respect to any one embodiment can be used alone or in combination with other described features, and can also be used in combination with one or more features of any other or any arbitrary combination of embodiments. Furthermore, equivalents and improvements not described above defined in the appended claims can also be adopted without departing from the scope of the present invention.

Claims

1. An aerosol generating system comprising: (i) an aerosol generating article containing a flavorant; and (ii) an aerosol generating device equipped with an induction heater, wherein when operating, the article is inserted into the device, and an aerosol is generated by heating the aerosol generating material contained in the article to at least 150 °C by using the induction heater, and at least 1 μg of the flavorant is aerosolized from the aerosol generating material under an air flow of at least 1.50 L / min for 2 seconds. The aerosol generating device comprises a susceptor. The susceptor defines a cylindrical chamber into which the article is inserted during use. The aerosol generating material occupies at least 85% of the cylindrical chamber defined by the susceptor, an aerosol generating system.

2. The aerosol generating system according to claim 1, wherein the aerosol generating material is solid and contains tobacco.

3. When operating, an aerosol is generated by heating the aerosol generating material to at least 150 °C by using the induction heater, and the total amount of the flavorant aerosolized from the aerosol generating material under an air flow of at least 1.50 L / min for at least 7 times of 2 seconds is at least 1.5 mg, the aerosol generating system according to claim 1 or claim 2.

4. When operating, an aerosol is generated by heating the aerosol generating material to at least 150 °C by using the induction heater, and the total amount of the flavorant aerosolized from the aerosol generating material under an air flow of at least 1.50 L / min for at least 9 times of 2 seconds is at least 2.5 mg, the aerosol generating system according to claim 1 or claim 2.

5. A method for generating an aerosol from an aerosol generating material containing a flavorant, comprising the step of heating the aerosol generating material to at least 150 °C by using an induction heater, and at least 1 μg of the flavorant is aerosolized from the aerosol generating material under an air flow of at least 1.50 L / min for 2 seconds. The induction heater comprises a susceptor. The susceptor defines a cylindrical chamber into which the article is inserted during use. The aerosol generating material occupies at least 85% of the cylindrical chamber defined by the susceptor, a method.

6. The method according to claim 5, wherein at least 100 μg of a flavoring agent is aerosolized from the aerosol-generating material under an air flow of at least 1.50 L / min for the 2 seconds. **Claim 7** The method according to claim 5 or claim 6, wherein at least 10 μg of nicotine is aerosolized from the aerosol-generating material under an air flow of at least 1.50 L / m for the 2 seconds. **Claim 8** The method according to any one of claims 5 to 7, wherein the flavoring agent contains menthol. **Claim 9** The method according to any one of claims 5 to 8, wherein the aerosol-generating material contains nicotine, and the weight ratio of the flavoring agent to nicotine in the generated aerosol in the aerosol is at least 2.5:

1. **Claim 10** The method according to any one of claims 5 to 9, wherein the aerosol-generating material is solid and contains tobacco. **Claim 11** The method according to any one of claims 5 to 10, wherein the aerosol-generating material contains an aerosol-generating agent, and at least 10 μg of the aerosol-generating agent is aerosolized in the 2 seconds. **Claim 12** The method according to claim 11, wherein at least 300 μg of the aerosol-generating agent is aerosolized in the 2 seconds. **Claim 13** The method according to any one of claims 5 to 12, wherein the density of the aerosol in the 2 seconds is at least 0.1 μg / cc. **Claim 14** The method according to any one of claims 5 to 13, wherein the average particle diameter or average droplet diameter of the generated aerosol is less than 1000 nm. **Claim 15** An aerosol containing at least 1 μg of a flavoring agent obtained by inductively heating an aerosol-generating material up to at least 150 °C under an air flow of at least 1.50 L / min for 2 seconds, wherein the aerosol-generating material is heated using an induction heater, the induction heater is provided with a susceptor, the susceptor defines a cylindrical chamber into which an article is inserted during use, and the aerosol-generating material occupies at least 85% of the cylindrical chamber defined by the susceptor. **Claim 16** A method of generating an aerosol from an aerosol-generating material comprising nicotine and an aerosol-forming agent, the method comprising heating the aerosol-generating material to at least 150 °C by use of an induction heater, wherein in the aerosol generated under an air flow of at least 1.50 L / min for 2 seconds, the weight ratio of flavorant to nicotine is at least 2.5:1, the induction heater comprises a susceptor, the susceptor defines a cylindrical chamber into which an article is inserted during use, the aerosol-generating material occupies at least 85% of the cylindrical chamber defined by the susceptor.

17. An aerosol-generating system comprising (i) an aerosol-generating article comprising an aerosol-generating material comprising nicotine and an aerosol-forming agent, and (ii) an aerosol-generating device comprising an induction heater, wherein during operation, the article is inserted into the device and an aerosol is generated by heating the aerosol-generating material to at least 150 °C by use of the induction heater, and wherein in the aerosol generated under an air flow of at least 1.50 L / min for 2 seconds, the weight ratio of flavorant to nicotine is at least 2.5:1, the aerosol-generating device comprises a susceptor, the susceptor defines a cylindrical chamber into which an article is inserted during use, the aerosol-generating material occupies at least 85% of the cylindrical chamber defined by the susceptor.

18. An aerosol comprising a flavorant and nicotine, wherein the weight ratio of flavorant to nicotine is at least 2.5:1, and wherein the aerosol is obtained by induction heating of an aerosol-generating material to at least 150 °C under an air flow of at least 1.50 L / min for 2 seconds, the aerosol-generating material is heated using an induction heater, the induction heater comprises a susceptor, the susceptor defines a cylindrical chamber into which an article is inserted during use, the aerosol-generating material occupies at least 85% of the cylindrical chamber defined by the susceptor.

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