Composition for non-heating aerosol generating systems with improved transfer rate of menthol containing a cooling agent.

Abstract

One embodiment of the present invention provides a humidifier containing propylene glycol (PG) and vegetable glycerin (VG), a composition for an aerosol generating system containing WS-3 and menthol, and a cartridge and aerosol generating system containing the same.

Description

Technical Field

[0001] The following embodiments relate to a composition for a non-heated aerosol generation system containing a cooling agent with improved menthol transfer amount, a cartridge containing the same, and an aerosol generation system.

Background Art

[0002] Recently, there has been an increasing need for alternative products to replace traditional cigarettes. For example, there has been a rapid increase in the need for devices that generate aerosols by electrically heating cigarette sticks (e.g., heated tobacco). Along with this, efforts have been actively made in research on electrically heated aerosol generation devices and cigarette sticks (or aerosol products) applied thereto.

[0003] Furthermore, not only research on electrically heated aerosol generation devices but also research on non-heated aerosol generation devices has been conducted. In this case, aerosol products containing pH-treated particles that generate free nicotine are used.

[0004] On the other hand, in conventional liquid e-cigarettes, various attempts have been made to increase the cooling sensation of menthol. However, at present, research on compositions containing a cooling agent that is suitable for use in non-heated aerosol generation devices but shows a high menthol transfer amount has not been separately conducted. Furthermore, in the case of non-heated aerosol generation systems, unlike existing heated aerosol generation devices, the functional properties of menthol must be realized without the influence of temperature. Therefore, there may be limitations in the content of the added cooling agent, and there is a problem that requires consideration of solubility with humectants and the like.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The present invention aims to solve the aforementioned problems and other problems.

[0006] The objective of one embodiment of the present invention is to provide a composition for an aerosol generating system with improved menthol transfer, which can increase the low menthol transfer amount in non-heated electronic cigarettes and provide users with a refreshing sensation and satisfaction from smoking.

[0007] Another object according to other embodiments of the present invention is to provide a cartridge containing the composition for the aerosol generating system and an aerosol generating system containing the same.

[0008] However, the technical challenges are not limited to those mentioned above, and other technical challenges may exist. [Means for solving the problem]

[0009] According to one embodiment of the present invention, a humidifier containing propylene glycol (PG) and vegetable glycerin (VG), and WS-3 (N-ethyl-5-methyl-2-(1-methylethyl)cyclohexanecarboxamide), Menthol and The present invention provides a composition for an aerosol generation system that includes the following:

[0010] In another embodiment of the present invention, in a cartridge for an aerosol generating system containing a liquid composition, The liquid composition provides a humectant containing propylene glycol (PG) and vegetable glycerin (VG), and a cartridge for an aerosol generating system containing WS-3 (N-ethyl-5-methyl-2-(1-methylethyl)cyclohexanecarboxamide) and menthol.

[0011] In yet another embodiment of the present invention, an aerosol generating article comprising a medium and one or more filter sections, A battery, an aerosol generator including a control unit and a vaporization unit, Includes, The medium portion comprises one or more of reconstituted tobacco, shredded tobacco, and tobacco granules. A liquid composition is sprayed onto the surface of one or more of the aforementioned reconstituted tobacco, shredded tobacco, and tobacco granules. The liquid composition provides a humectant containing propylene glycol (PG) and vegetable glycerin (VG), and an aerosol generating system containing WS-3 (N-ethyl-5-methyl-2-(1-methylethyl)cyclohexanecarboxamide) and menthol. [Effects of the Invention]

[0012] A composition for a non-heated aerosol generating system according to one embodiment of the present invention can solve the problem of low menthol transfer that occurs in non-heated e-cigarettes, eliminate the low menthol cooling sensation, and provide smokers with a sense of satisfaction from smoking. [Brief explanation of the drawing]

[0013] [Figure 1] This figure schematically shows the structure of an aerosol generating article according to one embodiment. [Figure 2] This figure schematically shows an aerosol generating system in which an aerosol generating article is coupled to an aerosol generating device according to one embodiment. [Modes for carrying out the invention]

[0014] The embodiments are described in detail below with reference to the attached drawings. However, various modifications can be made to the embodiments, and the scope of the patent application is not limited or restricted by such embodiments. Any modifications, equivalents, or substitutions to the embodiments should be understood to be included within the scope of the patent.

[0015] The terms used in the embodiments are for illustrative purposes only and should not be construed as intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “equipment,” “includes,” or “have” merely specify the existence of features, figures, stages, operations, components, parts, or combinations thereof described in the specification, and should not be understood as preemptively excluding the possibility of the existence or addition of one or more other features, figures, stages, operations, components, parts, or combinations thereof.

[0016] Furthermore, unless otherwise specifically noted or clearly inconsistent with the context, all terms used in this disclosure, including technical and scientific terms, have the same meaning as those generally understood by a person of ordinary skill in the art to which the invention pertains. Commonly used, dictionary-defined terms should be interpreted as having the meaning consistent with their meaning in the context of the relevant art, and not as ideal or overly formal unless explicitly defined in this application.

[0017] Furthermore, when describing with reference to the attached drawings, the same reference numeral will be assigned to the same component regardless of the reference numerals in the drawings, and redundant explanations will be omitted. When describing embodiments, if a specific explanation of such prior art is deemed to obscure the gist of the embodiments disclosed herein, such detailed explanation will be omitted.

[0018] Furthermore, when describing the components of the embodiments, expressions such as first, second, A, B, (a), (b), etc. can be used. These expressions are merely used to distinguish the components from other components, and the essence, order, sequence, or number of the components are not limited by these expressions. When a component is described as being "connected", "coupled", or "joined" to another component, the said component may be directly connected, coupled, or joined to the other component, but it should be understood that there may also be other components connected, coupled, or joined between the components.

[0019] For the components included in one embodiment and the components having common functions, the same names will be used for description in other embodiments. Unless otherwise specified, the description given in one embodiment is applicable to other embodiments, and specific descriptions within the overlapping scope will be omitted.

[0020] In the following embodiments, the "humectant" may mean a substance that facilitates the formation of visible smoke and / or aerosol. Examples of the humectant include glycerin (GLY), propylene glycol (PG), ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol, and the present invention is not limited thereto. In the art, the humectant may be used interchangeably with terms such as aerosol-forming agent and wetting agent.

[0021] In the following embodiments, the "aerosol-forming substrate" may mean a substance capable of forming an aerosol. The aerosol may contain volatile compounds. The aerosol-forming substrate may be in a solid or liquid state. For example, the solid aerosol-forming substrate may include solid substances based on tobacco raw materials such as cut tobacco, tobacco granules, and reconstituted tobacco. Reconstituted tobacco can be roughly classified into slurry-type sheet leaves and paper-type sheet leaves according to its manufacturing method. The liquid aerosol-forming substrate may include a liquid composition based on nicotine, tobacco extract and / or various flavoring agents. However, the scope of the present invention is not limited to such examples.

[0022] In the following embodiments, the "aerosol-generating article" may mean an article that houses an aerosol-forming substrate, i.e., a medium, and through which the aerosol passes, and nicotine contained in the medium migrates. A typical example of an aerosol-generating article is a cigarette, but the scope of the present invention is not limited thereto.

[0023] In the following embodiments, the "aerosol-generating device" may mean a device that generates an aerosol using an aerosol-forming substrate to generate an aerosol that can be directly inhaled into the user's lungs through the user's mouth.

[0024] In the following embodiments, "upstream" or "upstream direction" may mean a direction away from the user's (smoker's) mouth, and "downstream" or "downstream direction" may mean a direction approaching the user's mouth. The terms upstream and downstream can be used to describe the relative positions of the elements constituting the aerosol-generating article.

[0025] In the following embodiments, "puff" means the user's inhalation, and inhalation means a situation where air is drawn into the user's oral cavity, nasal cavity or lungs through the user's mouth or nose.

[0026] According to one embodiment of the present invention, a composition for an aerosol generating system is provided, comprising a humectant containing propylene glycol (PG) and vegetable glycerin (VG), WS-3 (N-ethyl-5-methyl-2-(1-methylethyl)cyclohexanecarboxamide), and menthol.

[0027] WS-3 is a cooling agent that enhances the cooling sensation of menthol because it has good sustained coolness. In particular, in the presence of a humectant containing PG and VG, adding a cooling agent such as WS-3 can actually increase the amount of menthol transferred compared to adding menthol alone. These results will be specifically shown in the examples section below.

[0028] On the other hand, in this case, the weight ratio of the dehumidifying agent containing PG and VG may be 8:2 to 2:8, preferably 6:4 to 4:6, and more preferably 5:5.

[0029] If the weight ratio of PG and VG in a dehumidifying agent containing PG and VG deviates from the above range, the solubility of WS-3 in the dehumidifying agent may decrease.

[0030] In particular, because WS-3 has low solubility in humectants containing PG and VG, for example, if the weight ratio of PG and VG is 5:5, the content of WS-3 can be up to a maximum of 1.5% by weight based on the total weight of the composition.

[0031] Therefore, since there is a limit to the amount of menthol that can be added for use in non-heating or low-temperature heating aerosol generation (non-heating e-cigarettes), it is preferable to use menthol in combination with the aforementioned humidifier, WS-3, in order to achieve a more effective amount of menthol transfer.

[0032] As described in the Examples section below, the amount of menthol transferred is far greater when a dehumidifier containing PG and VG is included along with WS-3 and menthol, compared to when only the dehumidifier and WS-3 are included, or only the dehumidifier and menthol are included.

[0033] In this case, the menthol content that may be included in the composition may be 10% to 15% by weight, preferably 11% to 14% by weight, and more preferably 12% to 13% by weight. When the menthol content is above the lower limit, an even higher amount of menthol transfer can be achieved compared to when it is below the lower limit, but when the menthol content exceeds the upper limit, there is a risk of menthol precipitation.

[0034] Furthermore, according to one embodiment of the present invention, the liquid composition may further contain WS-23 (N,2,3-trimethyl-2-isopropylbutanamide) along with a humectant containing PG and VG, WS-3 and menthol. WS-23 is also a cooling agent that provides a cool, refreshing sensation together with WS-3, and the inventors have found that by combining WS-3, WS-23 and menthol, the amount of menthol transferred to the liquid composition can be significantly increased without heating.

[0035] In particular, the amount of WS-23 that may be included at this time may be greater than 0% and less than 5% by weight based on the total weight of the composition, and preferably 1% to 3% by weight, due to reasons such as solubility.

[0036] Through this, the composition according to one embodiment of the present invention can most effectively solve the problem of low menthol coolness in a non-heated aerosol generating system.

[0037] In particular, by further adding WS-23 and menthol, it is possible to compensate for the drawbacks of containing only WS-3, which has low solubility and therefore has limitations on the amount that can be added, and a suitable solution can be presented that contributes to solving the problem of low cooling sensation.

[0038] On the other hand, Figure 1 is a schematic diagram showing the structure of an aerosol generating article according to one embodiment of the present invention.

[0039] Referring to Figure 1, the aerosol generating article 12 according to one embodiment may include a medium section 122, a filter section including a first filter section 121 and a second filter section 123, and a trumpet 125.

[0040] A composition according to one embodiment of the present invention contains a humectant containing PG and VG in a certain proportion, and therefore is primarily liquid. Accordingly, the liquid composition may be included in the medium or filter section when manufacturing an aerosol generating article, and when the liquid composition is included in the medium section, the composition can be sprayed onto the surface of one or more of the reconstituted tobacco, shredded tobacco, and tobacco granules located in the medium section.

[0041] Furthermore, if the filter section contains a liquid composition, the composition may be sprayed onto the filter tow using a Transfer Jet Nozzle System (TJNS) or the like, similar to the method of adding fragrance liquid to the filter.

[0042] In one embodiment, the aerosol-generating article 12 may be packaged by at least one flap 125. The flap may have at least one hole through which external air flows in and internal gases flow out. The flap 125 may be made of a material with high thermal conductivity.

[0043] For example, the first filter section 121 may be packaged by the first trumpet 1251, the medium section 122 by the second trumpet 1252, and the second filter section 123 by the third trumpet 1253. The entire aerosol generating article 12 may then be repackaged by the fourth trumpet 1255.

[0044] In one embodiment, the first flaps 1251, the second flaps 1252, and the third flaps 1253 may be made from porous rolled paper. For example, the porosity of the first flaps 1251, the second flaps 1252, and the third flaps 1253 may be 35,000 CU, but is not limited thereto. The thickness of the first flaps 1251, the second flaps 1252, and the third flaps 1253 may be in the range of 70 μm to 80 μm. Furthermore, the basis weight of the first flaps 1251, the second flaps 1252, and the third flaps 1253 may be 20 g / m². 2 ~25g / m 2 It can fall within that range.

[0045] For example, the second flaps 1252 may contain aluminum components. For example, the second flaps 1252 may be made by bonding a metal foil, such as aluminum foil, to ordinary filter paper. Alternatively, the second flaps 1252 may be made from sterile paper (MFW).

[0046] In one embodiment, the third flaps 1253 may be made from PLA laminate. Here, PLA laminate refers to a triple layer of paper including a paper layer, a PLA layer, and a paper layer. For example, the thickness of the third flaps 1253 can be in the range of 100 μm to 120 μm. The basis weight of the third flaps 1253 is 80 g / m². 2 ~100g / m 2 It can fall within that range.

[0047] In one embodiment, the fourth flaps 1254 may be made from sterile paper (MFW). For example, the basis weight of the fourth flaps 1254 may be 57 g / m². 2 ~63g / m 2It can fall within this range. Also, the thickness of the fourth trumpet 1254 can fall within the range of 64 μm to 70 μm.

[0048] In one embodiment, the first filter section 121 may be composed of a cellulose acetate filter. Alternatively, the first filter section 121 may be composed of a paper filter and a porous molded product. For example, the length of the first filter section 121 may be 4 mm to 15 mm, but is not limited thereto. Furthermore, the first filter section 121 may be treated with coloring or fragrance.

[0049] In one embodiment, the medium portion 122 may include a cavity, and the cavity may be filled with a medium. For example, the medium material filled in the medium portion 122 may include one or more of reconstituted tobacco, shredded tobacco, and tobacco granules. Furthermore, the length of the medium portion 122 can be an appropriate length within the range of 6 mm to 18 mm, but is not limited thereto.

[0050] Furthermore, the medium portion 122 may contain aerosol-generating substances such as glycerin. In addition, the medium portion 122 may contain flavoring agents and other additives such as humectants and / or organic acids.

[0051] In one embodiment, the medium in the medium section 122 may contain one or more of pH-treated reconstituted tobacco, shredded tobacco, and tobacco granules. For example, one or more of the reconstituted tobacco, shredded tobacco, and tobacco granules may be pH-treated with a pH adjusting agent to be basic (e.g., pH 7.0 to 9.5), and may contain at least one of the following substances: potassium carbonate (K2CO3), sodium bicarbonate (NaHCO3), and calcium oxide (CaO). However, the substances contained in the pH adjusting agent are not limited to the examples described above, and any substance that does not produce much odor during smoking can be used. The pH adjusting agent can increase the pH of the medium substrate contained in the medium section 122. Compared to a medium substrate that has not been pH-treated with a pH adjusting agent, a medium substrate containing one or more of the pH-treated reconstituted tobacco, shredded tobacco, and tobacco granules will release more nicotine when heated. In other words, in the case of a medium substrate that has been subjected to a basic pH treatment, a sufficient nicotine yield can be achieved through the basic treatment, whether the medium portion 122 is heated at a low temperature of 0°C to 150°C or not heated at all.

[0052] In one embodiment, the first filter section and / or the second filter section can be manufactured from a cellulose acetate filter and may further contain a plasticizer such as triacetin (TA) or triethyl citrate (TEC). Through this, the free nicotine in the medium section can be adsorbed onto at least one of the first filter section and the second filter section.

[0053] Figure 2 is a schematic diagram showing an aerosol generating system in which an aerosol generating article is coupled to an aerosol generating device according to one embodiment.

[0054] Referring to Figure 2, the aerosol generating system 1 according to one embodiment may include an aerosol generating device 11 and an aerosol generating article 12.

[0055] Referring to Figure 2, the aerosol generator 11 according to one embodiment may include a battery 111, a control unit 112, a vaporization unit 113, and an elongated cavity 114.

[0056] Those with ordinary skill in the art related to this embodiment should understand that, in addition to the related components shown in Figure 2, the aerosol generator 11 may also include other general-purpose components. Furthermore, the aerosol generator 11 may be in the form of a stick or a holder.

[0057] In one embodiment, the aerosol generator may be a device that generates an aerosol using a cartridge that holds the aerosol-generating substance of the present invention. The cartridge may also contain a liquid composition according to one embodiment of the present invention.

[0058] The aerosol generator including the vaporization unit 113 may include an aerosol generating substance, a cartridge for holding a liquid composition, and a main body for supporting the cartridge. Here, the liquid composition may be a liquid composition containing a humectant containing propylene glycol (PG) and vegetable glycerin (VG) as detailed above, and WS-3 and menthol, etc. The cartridge can be detachably attached to the main body, but is not limited thereto. The cartridge may be formed or assembled integrally with the main body, or it may be fixed so that it cannot be attached or detached by the user. The cartridge may be attached to the main body with the aerosol generating substance and the liquid composition contained inside. However, the present invention is not limited thereto, and it is also possible for the aerosol generating substance and the liquid composition to be injected into the cartridge while the cartridge is attached to the main body.

[0059] The cartridge can hold an aerosol-generating substance, composition, etc., having one of various states such as liquid, solid, gaseous, or gel. However, according to one embodiment of the present invention, it is preferable to include an aerosol-generating substance or composition in a liquid state. For example, the aerosol-generating substance may be a liquid containing a tobacco-containing substance that includes volatile tobacco flavor components, or it may be a liquid containing a non-tobacco substance.

[0060] The cartridge can generate aerosols by converting the phase of aerosol-generating materials inside it into a gaseous phase, activated by electrical or wireless signals transmitted from the main unit. Aerosols can refer to vaporized particles and gases containing air generated from aerosol-generating materials.

[0061] On the other hand, the battery 111 can supply power used to operate the aerosol generator 11. For example, the battery 111 can supply current to the vaporization unit 113 so that the vaporization unit 113 can heat the liquid composition or the like. The battery 111 can also supply the power necessary for the operation of the display, sensors, motors, etc., installed in the aerosol generator 11.

[0062] In one embodiment, the battery 111 may be a lithium iron phosphate (LiFePO4) battery, but is not limited to the examples described above. For example, the battery 111 may be a lithium cobalt oxide (LiCoO2) battery, a lithium titanate battery, or a lithium-ion battery.

[0063] For example, the battery 111 may be cylindrical with a diameter of 10 mm and a length of 37 mm, but is not limited thereto. For example, the capacity of the battery 111 may be in the range of 120 mAh to 250 mAh, but is not limited thereto. The battery 111 may also be a rechargeable battery or a disposable battery. For example, if the battery 111 is a rechargeable battery, the charge rate (C-rate) of the battery 111 may be 10 C and the discharge rate (C-rate) may be 10 C to 20 C, but is not limited thereto. Furthermore, for static use, the battery 111 may be manufactured so that more than 80% of its total capacity is maintained even after 2000 charge-discharge cycles.

[0064] In one embodiment, the control unit 112 controls the overall operation of the aerosol generator 11. Specifically, the control unit 112 controls the operation of not only the battery 111 and the vaporization unit 113, but also other components included in the aerosol generator 11. The control unit 112 can also check the status of each component of the aerosol generator 11 and determine whether or not the aerosol generator 11 is in an operational state.

[0065] In one embodiment, the control unit 112 includes at least one processor. The processor may be embodied by an array of numerous logic gates, or by a combination of a general-purpose MCU (microcontroller unit) and memory storing a program executable by the MCU. It will be understood by those ordinary skill in the art to which this embodiment belongs that it may also be embodied by other forms of hardware.

[0066] In one embodiment, the vaporization unit 113 can heat a liquid composition to generate an aerosol and release the generated aerosol towards an aerosol generating article 12 inserted into an elongated cavity 114, so that the generated aerosol passes through the aerosol generating article 12. Therefore, tobacco flavor can be added to the aerosol that has passed through the aerosol generating article 12, and the user can inhale the tobacco-flavored aerosol by inhaling one end of the aerosol generating article 12 with their mouth. In one embodiment, the vaporization unit 113 may be called a cartomizer or atomizer. In one embodiment, the vaporization unit 113 may be coupled to the aerosol generating device 11 in a replaceable manner.

[0067] In one embodiment, the aerosol generator 11 may further include a heater. Nicotine can be transferred to the aerosol generating article 12 according to one embodiment even under non-heating conditions. Furthermore, in the low-temperature heating mode using the heater, nicotine transfer can be promoted and the amount of nicotine transferred can be increased. The low-temperature heating mode using the heater can achieve an even higher level of flavor intensity compared to the non-heating mode, and the amount of nicotine transferred can be easily adjusted using the non-heating mode and the low-temperature heating mode.

[0068] The heater may be heated by power supplied from the battery 111. For example, if the aerosol generating article 12 is inserted into the aerosol generating device 11, the heater may be located outside the aerosol generating article 12. Thus, the heated heater can raise the temperature of the aerosol generating substance inside the aerosol generating article 12.

[0069] For example, the heater may be an electrically resistive heater. For example, the heater may include an electrically conductive track, and the heater may be heated by the flow of current through the electrically conductive track. However, the heater is not limited to the above examples and can be used without restriction as long as it can heat up to the desired temperature. Here, the desired temperature may already be set in the aerosol generator 11, or it may be set to a desired temperature by the user.

[0070] On the other hand, as another example, the heater may be an induction heater. Specifically, the heater may include an electrically conductive coil for heating the aerosol generating article 12 by induction heating, and the aerosol generating article 12 may include a susceptor that can be heated by the induction heater.

[0071] For example, the heater may include tubular heat transfer elements, plate-shaped heat transfer elements, needle-shaped heat transfer elements, or rod-shaped heat transfer elements, and depending on the shape of the heat transfer elements, it can heat the inside or outside of the aerosol generating article 12.

[0072] Furthermore, the aerosol generator 11 may have multiple heaters. In this case, the multiple heaters may be arranged so as to be inserted inside the aerosol generating article 12, or they may be arranged outside the aerosol generating article 12. Alternatively, some of the multiple heaters may be arranged so as to be inserted inside the aerosol generating article 12, and the rest may be arranged outside the aerosol generating article 12.

[0073] In one embodiment, an aerosol-generating article 12 can be contained in the elongated cavity 114. In one embodiment, a heater can heat the aerosol-generating article contained in the elongated cavity 114 by being positioned to surround the outer surface of the elongated cavity 114. In one embodiment, the heater may be positioned to surround at least a portion of the outer surface of the elongated cavity 114.

[0074] On the other hand, the aerosol generator 11 may further include general-purpose components in addition to the battery 111, the control unit 112, the vaporization unit 113, and the elongated cavity 114. For example, the aerosol generator 11 may include a sensing unit, an output unit, a user input unit, a memory unit, and a communication unit.

[0075] In one embodiment, the aerosol generator 11 may include vaporization sections 113 and elongated cavities 114 arranged in series or in parallel.

[0076] Referring to Figure 2, the aerosol generated by the vaporization unit 113 flows through the airflow path in the aerosol generator 11 into the elongated cavity 114 and can pass through the aerosol generating article 12. Therefore, tobacco flavor or nicotine can be added to the aerosol that has passed through the aerosol generating article 12, and the user can inhale the tobacco flavor or nicotine-added aerosol by inhaling one end of the aerosol generating article 12 with their mouth.

[0077] The vaporization unit 113 according to one embodiment may include a liquid storage unit, a liquid delivery means, a heating element, and an airflow path. Each component of the vaporization unit 113 can be made from polycarbonate material, but is not limited thereto.

[0078] In one embodiment, the control unit 112 can control the temperature of the heating element by controlling the current supplied to the heating element. Therefore, the control unit 112 can control the amount of aerosol generated from the liquid composition by controlling the current supplied to the heating element. Furthermore, when the control unit 112 detects a puff by the user, it can control the supply of current to the heating element for a pre-set period of time. For example, the control unit 112 can control the supply of current to the heating element for 1 to 5 seconds from the moment it detects a puff by the user.

[0079] In one embodiment, the control unit 112 can control the amount of aerosol released from the vaporization unit 113 by controlling the opening and closing state of the airflow path. Specifically, the control unit 112 can increase the amount of aerosol released from the vaporization unit 113 by increasing the size of the gap in the airflow path, or decrease the amount of aerosol released from the vaporization unit 113 by decreasing the size of the gap in the airflow path. For example, the control unit 112 can control the gap in the airflow path using a dial.

[0080] In one embodiment, if the liquid composition in the liquid storage unit is less than a previously set amount, the control unit 112 can notify the user via a vibration motor or display that there is insufficient liquid composition.

[0081] In one embodiment, the control unit 112 can control the temperature at which the heater heats the aerosol generating article 12. For example, the control unit 112 can adjust the temperature at which the heater heats the medium portion.

[0082] In one embodiment, the control unit 112 can control the heater between a non-heating mode and a low-temperature heating mode. In the non-heating mode, the heater does not need to heat the aerosol generating article 12, and in this case, the medium part may not be heated. In the low-temperature heating mode, the heater can heat the aerosol generating article 12 to a low temperature of 0°C to 150°C. In this case, the medium part may be heated to a low temperature of 0°C to 150°C.

[0083] The intensity of the flavor can be adjusted by switching the aerosol generating article 12 between non-heating mode and low-temperature heating mode. In non-heating mode, the amount of nicotine transferred from the medium is relatively small, resulting in a relatively low flavor intensity. In low-temperature heating mode, compared to non-heating mode, the amount of nicotine transferred from the medium is relatively large, resulting in a relatively high flavor intensity. Therefore, in low-temperature heating mode, sufficient flavor intensity can be ensured without applying a treatment to increase the pH of the medium.

[0084] -Examples

[0085] 1. Experimental Example 1: Evaluation of menthol transfer amount for each liquid composition

[0086] Aerosol generating article containing a fixed amount of menthol was prepared, along with liquid compositions for a non-heating aerosol generating system, each with a different composition as shown in Table 1 below. The aerosols were collected, and the amount of menthol transferred was measured by gas chromatography (GC) analysis. The results are shown in Table 1.

[0087] [Table 1]

[0088] As shown in Table 1 above, compared to Example 1 (control group) consisting of a humidifier alone, the composition of Example 2 with added WS-3 showed a slight improvement in menthol transfer, while the composition of Example 3 with added menthol actually showed a decrease in menthol transfer. Thus, it is thought that when menthol is added alone, compositional imbalances such as precipitation have an unfavorable effect on atomization.

[0089] On the other hand, the composition of Example 4, which contains both a humidifier, WS-3, and menthol, shows a much higher amount of menthol transfer compared to the compositions of Example 2, which contains both a humidifier and WS-3, or Example 3, which contains both a humidifier and menthol. This indicates that adding WS-3 and menthol simultaneously has a synergistic effect in improving the amount of menthol transfer.

[0090] 2. Experimental Example 2: Evaluation of menthol transfer amount according to the amount of additional cooling agent added.

[0091] As shown in Table 2 below, WS-23 was further added as a cooling agent to prepare liquid compositions for non-heating aerosol generating systems with different compositions, and the amount of menthol transferred from each was measured in the same manner as in Experimental Example 1. The results are shown in Table 2.

[0092] [Table 2]

[0093] As shown in Table 2 above, the amount of menthol transferred was significantly greater in the compositions of Examples 6 to 8, which included the additional cooling agent WS-23, compared to Example 5, which included WS-3 and menthol. The amount of menthol transferred increased further as the content of added WS-23 increased.

[0094] From this, it can be inferred that the low solubility of WS-3 limits the amount of menthol that can be transferred, and that this can be overcome by adding WS-23. This suggests that by including menthol and both WS-3 and WS-23, an even more effective menthol cooling sensation can be provided.

[0095] The above-described embodiments are illustrative only, and any person with ordinary skill in the art will understand that a wide variety of modifications and equivalent embodiments are possible. Therefore, the true technical scope of protection of the present invention should be defined by the appended claims, and any differences that fall within the same scope as those described in the claims should be interpreted as being included within the scope of protection defined by the claims.

[0096] The features and aspects of any of the embodiments described above can be combined with any other features and aspects of any embodiment, provided that this does not result in an obvious technical conflict.

Claims

1. A humidifier containing propylene glycol (PG) and vegetable glycerin (VG), WS-3 (N-ethyl-5-methyl-2-(1-methylethyl)cyclohexanecarboxamide) and Menthol and A composition for an aerosol generation system, comprising:

2. The composition for an aerosol generating system according to claim 1, wherein the weight ratio of propylene glycol (PG) and vegetable glycerin (VG) in the humidifying agent is 8:2 to 2:

8.

3. The composition for an aerosol generating system according to claim 1, wherein the content of WS-3 is 1.5% by weight or less based on the composition.

4. The weight ratio of propylene glycol (PG) and vegetable glycerin (VG) in the aforementioned dehumidifying agent is 5:

5. The composition for an aerosol generating system according to claim 1, wherein the content of WS-3 is 1.5% by weight or less based on the composition.

5. The composition for an aerosol generating system according to claim 1, wherein the menthol content is 10 to 15% by weight based on the composition.

6. The composition for an aerosol generating system according to claim 1, further comprising WS-23 (N,2,3-trimethyl-2-isopropylbutanamide).

7. The composition for an aerosol generating system according to claim 6, wherein the content of WS-23 is greater than 0 and 5% by weight or less based on the composition.

8. The composition for the aerosol generating system according to claim 1, wherein the aerosol generating system is non-heating or low-temperature heating of 0°C to 150°C.

9. In a cartridge for an aerosol generation system containing a liquid composition, The liquid composition is a cartridge for an aerosol generating system, comprising a humectant containing propylene glycol (PG) and vegetable glycerin (VG), and WS-3 (N-ethyl-5-methyl-2-(1-methylethyl)cyclohexanecarboxamide) and menthol.

10. an aerosol generating article comprising a medium and one or more filter sections, A battery, an aerosol generator including a control unit and a vaporization unit, Includes, The medium portion comprises one or more of reconstituted tobacco, shredded tobacco, and tobacco granules. The surface of one or more of the aforementioned reconstituted tobacco, shredded tobacco, and tobacco granules is sprayed with a liquid composition. The liquid composition is an aerosol generating system comprising a humectant containing propylene glycol (PG) and vegetable glycerin (VG), and WS-3 (N-ethyl-5-methyl-2-(1-methylethyl)cyclohexanecarboxamide) and menthol.

11. The aerosol generating device further includes a cartridge, The aerosol generating system according to claim 10, wherein the cartridge contains the liquid composition.

12. The aerosol generating system according to claim 10, wherein the liquid composition is sprayed onto one or more of the filter sections.

13. The aerosol generating article according to claim 10, wherein one or more of the reconstituted tobacco, shredded tobacco, and tobacco granules are subjected to pH treatment so that the pH is 7.0 to 9.5 or lower.

14. The aerosol generating article according to claim 10, wherein one or more of the reconstituted tobacco, shredded tobacco, and tobacco granules generate volatile free nicotine under non-heating conditions or under low-temperature heating conditions of 0°C to 150°C.

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