Composition for unheated-type aerosol-generating system with improved migration amount of menthol comprising cooling agent

Abstract

According to an embodiment of the present invention, provided are a composition for an aerosol-generating system, a cartridge comprising same, and an aerosol-generating system, the composition comprising: a moisturizer including propylene glycol (PG) and vegetable glycerin (VG); WS-3; and menthol.

Description

Composition for non-heated aerosol generating system with improved menthol transfer amount including cooling agent

[0001] The following examples relate to a composition for a non-heated aerosol-generating system comprising a cooling agent having an improved menthol transfer amount, a cartridge comprising the same, and an aerosol-generating system.

[0002] Recently, demand for alternatives to traditional cigarettes has been increasing. For example, demand is growing for devices that generate aerosol by electrically heating a cigarette stick (e.g., heat-not-burn electronic cigarettes). Accordingly, research is being conducted on electrically heated aerosol generating devices and the cigarette sticks (or aerosol-generating products) used with them.

[0003] Furthermore, research is being conducted not only on electrically heated aerosol generators but also on non-heated aerosol generators, in which case an aerosol-generating article comprising pH-treated granules that generate free nicotine is used.

[0004] Meanwhile, although there have been various attempts to increase the refreshing sensation of menthol in existing liquid-type electronic cigarettes, there is currently no separate research on a composition including a cooling agent that is suitable for non-heated aerosol generating devices and can exhibit a high menthol transfer amount. Furthermore, in the case of non-heated aerosol generating systems, unlike existing heated aerosol generating devices, the sensory characteristics of menthol must be realized without the influence of temperature, so there may be limitations on the amount of cooling agent added, and there is also the problem of having to consider solubility with moisturizers, etc.

[0005] The present disclosure aims to solve the above-mentioned and other problems.

[0006] An object of one embodiment of the present invention is to provide a composition for an aerosol generating system having an improved menthol transfer amount, which can provide a user with a refreshing feeling and a satisfying feeling of smoking by increasing the low menthol transfer amount in a non-heated electronic cigarette.

[0007]

[0008] In addition, an object according to another embodiment of the present invention is to provide a cartridge comprising a composition for the aerosol generating system, and an aerosol generating system comprising the same.

[0009]

[0010] However, technical challenges are not limited to the technical challenges described above, and other technical challenges may exist.

[0011] According to one embodiment of the present invention, a moisturizer comprising propylene glycol (PG) and vegetable glycerin (VG);

[0012] WS-3 (N-ethyl-5-methyl-2-(1-methylethyl)cyclohexanecarboxamide); and

[0013] A composition for an aerosol generating system comprising menthol is provided.

[0014]

[0015] According to another embodiment of the present invention, in a cartridge for an aerosol generating system comprising a liquid composition,

[0016] The liquid composition provides a cartridge for an aerosol generating system comprising a humectant including propylene glycol (PG) and vegetable glycerin (VG), WS-3 (N-ethyl-5-methyl-2-(1-methylethyl)cyclohexanecarboxamide) and menthol.

[0017]

[0018] According to another embodiment of the present invention, an aerosol-generating article comprising a medium portion and one or more filter portions, and

[0019] An aerosol generating device comprising a battery, a control unit, and a vaporizer,

[0020] The above medium comprises at least one of reconstituted tobacco, tobacco filler and tobacco granules,

[0021] The surface of at least one of the above reconstituted tobacco, tobacco filler and tobacco granules is sprayed with a liquid composition,

[0022] The liquid composition provides an aerosol-generating system comprising a moisturizer including propylene glycol (PG) and vegetable glycerin (VG), WS-3 (N-ethyl-5-methyl-2-(1-methylethyl)cyclohexanecarboxamide) and menthol.

[0023] 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 amount occurring in non-heated electronic cigarettes, thereby eliminating low menthol refreshing sensation, thereby providing smokers with a sense of satisfaction from smoking.

[0024] FIG. 1 is a schematic drawing showing the structure of an aerosol-generating article according to one embodiment.

[0025] FIG. 2 is a schematic diagram of an aerosol generating system in which an aerosol generating article is combined with an aerosol generating device according to one embodiment.

[0026] Hereinafter, embodiments are described in detail with reference to the attached drawings. However, the embodiments may be modified in various ways, and the scope of the invention is not limited or restricted by these embodiments. It should be understood that all modifications, equivalents, or alternatives to the embodiments are included within the scope of the invention.

[0027] The terms used in the examples are for illustrative purposes only and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "have" are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but should be understood to not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0028] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the embodiments pertain. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0029] In addition, when describing with reference to the attached drawings, identical components will be assigned the same reference numerals regardless of the drawing numbers, and redundant descriptions thereof will be omitted. When describing embodiments, if a detailed description of a related known technology is judged to unnecessarily obscure the gist of the embodiment, the detailed description will be omitted.

[0030] Additionally, terms such as first, second, A, B, (a), (b), etc. may be used to describe components of the embodiments. These terms are only intended to distinguish the components from other components, and the nature, order, or sequence of the components are not limited by the terms. When a component is described as being "connected," "coupled," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but another component may also be "connected," "coupled," or "connected" between each component.

[0031] Components included in one embodiment and components with common functions will be described using the same names in other embodiments. Unless otherwise stated, the descriptions given in one embodiment can be applied to other embodiments, and detailed descriptions will be omitted to the extent of overlap.

[0032]

[0033] In the following examples, "humectant" may refer to a substance that facilitates the formation of visible smoke and / or aerosol. Examples of humectants include, but are not limited to, glycerin (GLY), propylene glycol (PG), ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. In the art, the term "humectant" may be used interchangeably with terms such as aerosol former, humectant, etc.

[0034] In the following examples, the term "aerosol-forming substrate" may refer to a material capable of forming an aerosol. The aerosol may include volatile compounds. The aerosol-forming substrate may be solid or liquid. For example, a solid aerosol-forming substrate may include a solid material based on tobacco raw materials such as tobacco cut filler, tobacco granules, or reconstituted tobacco. Reconstituted tobacco may be classified into slurry-type sheet tobacco and paper-type sheet tobacco depending on the manufacturing method. A 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 disclosure is not limited to these examples.

[0035] In the following examples, the term "aerosol-generating article" may refer to an aerosol-forming substrate, i.e., an article containing a medium through which an aerosol passes and nicotine contained in the medium is transferred. A representative example of an aerosol-generating article may be a cigarette, but the scope of the present disclosure is not limited thereto.

[0036] In the following embodiments, an "aerosol generating device" may mean a device that generates an aerosol using an aerosol forming substrate to generate an aerosol that is directly inhalable into the user's lungs through the user's mouth.

[0037] In the following examples, "upstream" or "upstream direction" may refer to a direction away from the user's (smoker's) mouth, and "downstream" or "downstream direction" may refer to a direction toward the user's mouth. The terms "upstream" and "downstream" may be used to describe the relative positions of elements constituting an aerosol-generating article.

[0038] In the following examples, "puff" means inhalation by the user, and inhalation means drawing into the user's oral cavity, nasal cavity, or lungs through the user's mouth or nose.

[0039]

[0040] According to one embodiment of the present invention, a moisturizer comprising propylene glycol (PG) and vegetable glycerin (VG);

[0041] WS-3 (N-ethyl-5-methyl-2-(1-methylethyl)cyclohexanecarboxamide); and

[0042] A composition for an aerosol generating system comprising menthol is provided.

[0043] WS-3 is a cooling agent that can enhance the refreshing sensation of menthol due to its excellent cooling sensation persistence. In particular, in the presence of a moisturizer containing PG and VG, when a cooling agent such as WS-3 is added, the amount of menthol transferred can be increased compared to when menthol alone is added. These results are specifically shown in the examples described later.

[0044] Meanwhile, in this case, the weight ratio of the moisturizer containing the PG and VG may be 8:2 to 2:8, preferably 6:4 to 4:6, and more preferably 5:5.

[0045] When the weight ratio of PG and VG in a moisturizer containing PG and VG is outside the above range, the solubility of WS-3 in the moisturizer may decrease.

[0046] In particular, the WS-3 has low solubility in a moisturizer containing PG and VG, so that, for example, when the weight ratio of PG and VG is 5:5, the content of WS-3 may be included up to 1.5 wt% based on the total weight of the composition.

[0047] Therefore, it can be seen that there is a limit to the amount added for use in non-heated or low-temperature heated aerosol generation (non-heated electronic cigarettes), so in order to exhibit a more effective amount of menthol transfer, it is preferable to use menthol together with the above-mentioned moisturizer, WS-3.

[0048] As shown in the examples below, the case of including a moisturizer including PG and VG, WS-3 and menthol has a significantly higher menthol transfer amount than the case of including only a moisturizer and WS-3, or only a moisturizer and menthol.

[0049] In this case, the content of menthol that can be included in the composition may be 10 to 15 wt%, preferably 11 to 14 wt%, and more preferably 12 to 13 wt%. When the content of menthol is equal to or greater than the lower limit, a higher menthol transfer amount can be achieved compared to when it is less than the lower limit, but when the content of menthol exceeds the upper limit, there may be a concern about menthol precipitation.

[0050]

[0051] Furthermore, according to one embodiment of the present invention, the liquid composition may additionally include a humectant including PG and VG, WS-3, menthol, and WS-23 (N,2,3-trimethyl-2-isopropyl butanamide). The WS-23, together with WS-3, acts as a cooling agent capable of inducing a cooling sensation, 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.

[0052] In particular, the content of WS-23 that can be included at this time may be more than 0 and less than 5 wt% based on the total weight of the composition for reasons such as solubility, and may preferably be 1 wt% to 3 wt%.

[0053] Through this, the composition according to one embodiment of the present invention can most effectively solve the low menthol refreshing sensation of a non-heated aerosol generating system.

[0054] In particular, the addition of the above WS-23 and menthol can be considered as a desirable solution for resolving the low refreshing feeling, as it can complement the case of only including WS-3, which has low solubility and thus has a limited amount of content to be added.

[0055]

[0056] Meanwhile, FIG. 1 is a drawing schematically showing the structure of an aerosol-generating article according to one embodiment of the present invention.

[0057] Referring to FIG. 1, an aerosol-generating article (12) according to one embodiment may include a medium portion (122), a filter portion including a first filter portion (121) and a second filter portion (123), and a wrapper (125).

[0058] A composition according to one embodiment of the present invention comprises a moisturizer containing PG and VG in a certain ratio, and thus is mainly in a liquid form. Accordingly, the liquid composition may be included in a medium portion or a filter portion when manufacturing an aerosol-generating article, and when the liquid composition is included in the medium portion, the composition may be sprayed onto the surface of one or more of reconstituted tobacco, tobacco cut filler, and tobacco granules located in the medium portion.

[0059] In addition, when the filter section includes a liquid composition, the composition can be sprayed onto the filter tow using a TJNS (Transfer Jet Nozzle System) method, etc., similar to the method of adding a fragrance to the filter.

[0060] In one embodiment, the aerosol-generating article (12) may be wrapped by at least one wrapper (125). The wrapper may have at least one hole formed therein to allow external air to enter or internal gas to escape. The wrapper (125) may comprise a material having high thermal conductivity.

[0061] For example, the first filter unit (121) may be wrapped by the first wrapper (1251), the medium unit (122) may be wrapped by the second wrapper (1252), and the second filter unit (123) may be wrapped by the third wrapper (1253). In addition, the entire aerosol-generating article (12) may be repackaged by the fourth wrapper (1255).

[0062] In one embodiment, the first wrapper (1251), the second wrapper (1252), and the third wrapper (1253) may be manufactured from porous paper. For example, the porosity of each of the first wrapper (1251), the second wrapper (1252), and the third wrapper (1253) may be 35000 CU, but is not limited thereto. In addition, the thickness of each of the first wrapper (1251), the second wrapper (1252), and the third wrapper (1253) may be within a range of 70 μm to 80 μm. In addition, the basis weight of each of the first wrapper (1251), the second wrapper (1252), and the third wrapper (1253) may be 20 g / m. 2 ~ 25g / m 2 may be included within the scope of.

[0063] For example, the second wrapper (1252) may include an aluminum component. For example, the second wrapper (1252) may be a combination of a general filter paper and a metal foil, such as aluminum foil. Additionally, the second wrapper (1252) may be made of sterile filter paper (MFW).

[0064] In one embodiment, the third wrapper (1253) may be made of PLA paper. Here, the PLA paper refers to three layers of paper including a paper layer, a PLA layer, and a paper layer. For example, the thickness of the third wrapper (1253) may be within a range of 100 μm to 120 μm. In addition, the basis weight of the third wrapper (1253) is 80 g / m. 2 ~ 100g / m 2 may be included within the scope of.

[0065] In one embodiment, the fourth wrapper (1254) may be made of sterile paper (MFW). For example, the weight of the fourth wrapper (1254) is 57 g / m 2 ~ 63g / m 2 It can be included within the range of . In addition, the thickness of the fourth wrapper (1254) can be included within the range of 64㎛ to 70㎛.

[0066] In one embodiment, the first filter unit (121) may be composed of a cellulose acetate filter. Furthermore, the first filter unit (121) may be composed of a paper filter, a porous molding, or the like. For example, the length of the first filter unit (121) may be 4 to 15 mm, but is not limited thereto. Furthermore, the first filter unit (121) may be colored or flavored.

[0067] In one embodiment, the medium portion (122) may include a cavity, and the cavity may be filled with a medium. For example, the medium substrate filled in the medium portion (122) may include one or more of reconstituted tobacco, tobacco cut filler, and tobacco granules. In addition, the length of the medium portion (122) may be adopted as an appropriate length within the range of 6 mm to 18 mm, but is not limited thereto.

[0068] Additionally, the medium (122) may include an aerosol-generating substance such as glycerin. Additionally, the medium (122) may contain other additives such as a flavoring agent, a humectant, and / or an organic acid.

[0069] In one embodiment, the medium within the medium portion (122) may include one or more of pH-treated reconstituted tobacco, tobacco cut filler, and tobacco granules. For example, one or more of the reconstituted tobacco, tobacco cut filler, and tobacco granules may be pH-treated to have an alkaline property (e.g., pH 7.0 to 9.5) with a pH adjusting agent, such as at least one of potassium carbonate (K2CO3), sodium bicarbonate (NaHCO3), and calcium oxide (CaO). However, the material included in the pH adjusting agent is not limited to the examples described above, and any material that produces less negative odor during smoking may be used. The pH adjusting agent may increase the pH of the medium substrate included in the medium portion (122). Compared to a medium substrate that is not treated with a pH adjusting agent, a medium substrate including one or more of the reconstituted tobacco, tobacco cut filler, and tobacco granules that has been alkaline pH-treated increases the amount of nicotine released when heated. That is, in the case of a medium substrate treated with a base pH, a sufficient nicotine yield due to the base treatment can be achieved even if the medium portion (122) is heated at a low temperature of 0°C to 150°C or is not heated.

[0070] In one embodiment, the first filter portion and / or the second filter portion may be manufactured from a cellulose acetate filter portion and may further include a plasticizer such as triacetin (TA) or triethyl citrate (TEC). This allows free nicotine in the medium portion to be adsorbed to at least one of the first filter portion and the second filter portion.

[0071]

[0072] FIG. 2 is a schematic diagram of an aerosol generating system in which an aerosol generating article is combined with an aerosol generating device according to one embodiment.

[0073] Referring to FIG. 2, an aerosol generating system (1) according to one embodiment may include an aerosol generating device (11) and an aerosol generating article (12).

[0074] Referring to FIG. 2, an aerosol generating device (11) according to one embodiment may include a battery (111), a control unit (112), a vaporizer (113), and a long cavity (114).

[0075] Those skilled in the art related to the present embodiment will understand that the aerosol generating device (11) illustrated in FIG. 2 may further include other general components in addition to the related components described in FIG. 2. In addition, the aerosol generating device (11) may be in the form of a stick or a holder.

[0076] In one embodiment, the aerosol-generating device may be a device that generates an aerosol using a cartridge containing the aerosol-generating material of the present invention. Furthermore, the cartridge may comprise a liquid composition according to one embodiment of the present invention.

[0077] An aerosol generating device including a vaporizer (113) may include a cartridge containing an aerosol generating substance, a liquid composition, and a body supporting the cartridge. Here, the liquid composition may be a liquid composition containing a moisturizer including propylene glycol (PG) and vegetable glycerin (VG), WS-3, and menthol, as described in detail above. The cartridge may be detachably coupled to the body, but is not limited thereto. The cartridge may be formed integrally with or assembled to the body, and may be fixed so as not to be detached by a user. The cartridge may be mounted to the body while containing the aerosol generating substance and the liquid composition therein. However, the present invention is not limited thereto, and the aerosol generating substance and the liquid composition may be injected into the cartridge while the cartridge is coupled to the body.

[0078] The cartridge may contain an aerosol-generating substance, composition, etc. in any of a variety of states, such as a liquid, solid, gaseous, or gel state. However, according to one embodiment of the present invention, it is preferred to contain an aerosol-generating substance, composition, etc. in a liquid state. For example, the aerosol-generating substance may be a liquid containing a tobacco-containing substance including volatile tobacco flavoring components, or may be a liquid containing a non-tobacco substance.

[0079] The cartridge can perform the function of generating an aerosol by converting the phase of an aerosol-generating substance, etc., within the cartridge into a gas phase by operating with an electric signal or wireless signal transmitted from the main body. The aerosol can refer to a gas that is a mixture of vaporized particles generated from the aerosol-generating substance and air.

[0080] Meanwhile, the battery (111) can supply power used to operate the aerosol generating device (11). For example, the battery (111) can supply current to the vaporizer (113) so that the vaporizer (113) can heat a liquid composition, etc. In addition, the battery (111) can supply power necessary for the operation of the display, sensor, motor, etc. installed in the aerosol generating device (11).

[0081] In one embodiment, the battery (111) may be a lithium iron phosphate (LiFePO4) battery, but is not limited to the above-described example. For example, the battery (111) may be a lithium cobalt oxide (LiCoO2) battery, a lithium titanate battery, or a lithium ion battery.

[0082] For example, the battery (111) may have a cylindrical shape 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 range from 120 mAh to 250 mAh, but is not limited thereto. In addition, the battery (111) may be a rechargeable battery or a disposable battery. For example, when the battery (111) is rechargeable, 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. In addition, for static use, the battery (111) may be manufactured so that 80% or more of the total capacity can be secured even when charging / discharging is performed 2000 times.

[0083] In one embodiment, the control unit (112) controls the overall operation of the aerosol generating device (11). Specifically, the control unit (112) controls the operation of the battery (111), the vaporizer (113), as well as other components included in the aerosol generating device (11). In addition, the control unit (112) can also check the status of each component of the aerosol generating device (11) to determine whether the aerosol generating device (11) is operable.

[0084] In one embodiment, the control unit (112) includes at least one processor. The processor may be implemented as an array of multiple logic gates, or as a combination of a general-purpose microprocessor and a memory storing a program executable on the microprocessor. Furthermore, those skilled in the art will appreciate that the processor may be implemented using other types of hardware.

[0085] In one embodiment, the vaporizer (113) can heat a liquid composition to generate an aerosol and can emit the generated aerosol toward an aerosol-generating article (12) inserted into an elongated cavity (114) such that the generated aerosol passes through the aerosol-generating article (12). Accordingly, a tobacco flavor can be added to the aerosol passing through the aerosol-generating article (12), and a user can inhale the aerosol with the tobacco flavor by inhaling one end of the aerosol-generating article (12) with the mouth. In one embodiment, the vaporizer (113) can be referred to as a cartomizer or an atomizer. In one embodiment, the vaporizer (113) can be coupled to the aerosol-generating device (11) so as to be replaceable.

[0086] In one embodiment, the aerosol generating device (11) may further include a heater. The aerosol generating article (12) according to one embodiment can transfer nicotine even under non-heated conditions. Furthermore, in a low-temperature heating mode using the heater, the transfer of nicotine can be promoted, thereby increasing the amount of nicotine transferred. The low-temperature heating mode using the heater can realize a higher nicotine taste intensity than the non-heating mode, and the amount of nicotine transferred can be easily controlled through the non-heating mode and the low-temperature heating mode.

[0087] The heater can be heated by power supplied from the battery (111). For example, when the aerosol-generating article (12) is inserted into the aerosol-generating device (11), the heater can be located outside the aerosol-generating article (12). Accordingly, the heated heater can increase the temperature of the aerosol-generating material within the aerosol-generating article (12).

[0088] For example, the heater may be an electrical resistance heater. For example, the heater may include an electrically conductive track, and the heater may be heated as current flows through the electrically conductive track. However, the heater is not limited to the above-described examples, and any heater capable of heating to a desired temperature may be used without limitation. Here, the desired temperature may be preset in the aerosol generating device (11), or may be set to a desired temperature by the user.

[0089] Meanwhile, as another example, the heater may be an induction heater. Specifically, the heater may include an electrically conductive coil for inductively heating the aerosol-generating article (12), and the aerosol-generating article (12) may include a susceptor that can be heated by the induction heater.

[0090] For example, the heater may include a tubular heat transfer element, a plate-shaped heat transfer element, a needle-shaped heat transfer element, or a rod-shaped heat transfer element, and may heat the inside or outside of the aerosol-generating article (12) depending on the shape of the heat transfer element.

[0091] In addition, a plurality of heaters may be arranged in the aerosol generating device (11). At this time, the plurality of heaters may be arranged to be inserted into the interior of the aerosol generating article (12) or may be arranged on the exterior of the aerosol generating article (12). In addition, some of the plurality of heaters may be arranged to be inserted into the interior of the aerosol generating article (12), and the remainder may be arranged on the exterior of the aerosol generating article (12).

[0092] In one embodiment, the elongated cavity (114) can accommodate an aerosol-generating article (12). In one embodiment, a heater can be disposed surrounding an outer surface of the elongated cavity (114) to heat the aerosol-generating article accommodated in the elongated cavity (114). In one embodiment, the heater can be disposed surrounding at least a portion of the outer surface of the elongated cavity (114).

[0093] Meanwhile, the aerosol generating device (11) may further include general-purpose components in addition to the battery (111), control unit (112), vaporizer (113), and elongated cavity (114). For example, the aerosol generating device (11) may include a sensing unit, an output unit, a user input unit, a memory, and a communication unit.

[0094] According to one embodiment, the aerosol generating device (11) may include vaporizers (113) and elongated cavities (114) arranged in series or parallel.

[0095] Referring to FIG. 2, the aerosol generated by the vaporizer (113) can flow into the elongated cavity (114) through the airflow passage in the aerosol generating device (11) and pass through the aerosol generating article (12). Accordingly, 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 aerosol added with tobacco flavor or nicotine by inhaling one end of the aerosol generating article (12) with the mouth.

[0096] A vaporizer (113) according to one embodiment may include a liquid storage unit, a liquid delivery means, a heating element, and an airflow passage. Each component of the vaporizer (113) may be made of a polycarbonate material, but is not limited thereto.

[0097] In one embodiment, the control unit (112) can control the temperature of the heating element by controlling the current supplied to the heating element. Accordingly, the control unit (112) can control the amount of aerosol generated from the liquid composition by controlling the current supplied to the heating element. In addition, the control unit (112) can control to supply current to the heating element for a preset period of time when the user's puff is detected. For example, the control unit (112) can control to supply current to the heating element for 1 to 5 seconds from the time the user's puff is detected.

[0098] In one embodiment, the control unit (112) can control the opening / closing state of the airflow passage to control the amount of aerosol emitted from the vaporizer (113). Specifically, the control unit (112) can increase the size of the gap in the airflow passage to increase the amount of aerosol emitted from the vaporizer (113), and can decrease the size of the gap in the airflow passage to decrease the amount of aerosol emitted from the vaporizer (113). For example, the control unit (112) can control the gap in the airflow passage using a dial method.

[0099] In one embodiment, the control unit (112) can notify the user of a shortage of liquid composition through a vibration motor or a display when the liquid composition in the liquid storage unit is less than a preset amount.

[0100] 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 regulate the temperature at which the heater heats the medium.

[0101] 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 may not heat the aerosol-generating article (12), and the medium portion may not be heated at this time. In the low-temperature heating mode, the heater may low-temperature heat the aerosol-generating article (12) to a temperature of 0 degrees Celsius or higher and 150 degrees Celsius or lower. In this case, the medium portion may be low-temperature heated to a temperature of 0 degrees Celsius or higher and 150 degrees Celsius or lower.

[0102] As the aerosol-generating article (12) switches between a non-heated mode and a low-temperature heating mode, the taste intensity can be adjusted. In the non-heated mode, the amount of nicotine transferred from the medium portion is relatively low, so the taste intensity can be relatively low. In the low-temperature heating mode, compared to the non-heated mode, the amount of nicotine transferred from the medium portion is relatively high, so the taste intensity can be relatively high. Therefore, in the low-temperature heating mode, a sufficient taste intensity can be secured even without increasing the pH of the medium portion.

[0103]

[0104] - Example

[0105] 1. Experimental Example 1: Evaluation of Menthol Transfer Amount by Liquid Composition

[0106] An aerosol-generating article containing a certain amount of menthol and a liquid composition for a non-heated aerosol-generating system having different compositions, as shown in Table 1 below, were prepared, and the aerosol was captured and the amount of menthol transferred was measured through Gas Chromatography (GC) analysis. The results are shown in Table 1.

[0107] Composition (No.) Composition Menthol transfer amount (mg) Example 1 Humectant (PG:VG=5:5) 1.29 Example 2 Humectant + (WS-3 1.5 wt%) 1.69 Example 3 Humectant + (Menthol 15 wt%) 0.73 Example 4 Humectant + WS-3 + Menthol 3.06

[0108]

[0109] As shown in Table 1 above, compared to Example 1 (control group) consisting of only a moisturizer, the composition of Example 2 with WS-3 added showed a slight increase in menthol migration amount, but the composition of Example 3 with menthol added showed a decrease in menthol migration amount. It is thought that when menthol is added alone, it has a detrimental effect on atomization due to compositional imbalance such as precipitation.

[0110] Meanwhile, the composition of Example 4, which added both a moisturizer and WS-3 and menthol, showed a much higher menthol migration amount compared to the composition of Example 2, which added a moisturizer and WS-3, or Example 3, which added a moisturizer and menthol. It can be seen that the simultaneous addition of WS-3 and menthol has a synergistic effect in improving the menthol migration amount.

[0111]

[0112] 2. Experimental Example 2: Evaluation of Menthol Transfer Amount According to Additional Cooling Agent Addition

[0113] As shown in Table 2 below, WS-23 was additionally added as a cooling agent to form liquid compositions for non-heated aerosol generating systems of different compositions, and the menthol transfer amounts of each were measured using the same method as in Experimental Example 1. The results are shown in Table 2.

[0114] Composition (No.) Composition Menthol transfer amount (mg) Example 5 WS-3 1.0 wt% + menthol 10 wt% 1.70 Example 6 WS-3 1.0 wt% + menthol 10 wt% + WS-23 1.0 wt% 3.89 Example 7 WS-3 1.0 wt% + menthol 10 wt% + WS 2.0 wt% 4.08 Example 8 WS-3 1.0 wt% + menthol 10 wt% + WS 3.0 wt% 4.18

[0115]

[0116] As shown in Table 2 above, in the case of the compositions of Examples 6 to 8 including the additional cooling agent of WS-23, the amount of menthol migration was much higher than that of Example 5 including WS-3 and menthol, and as the content of WS-23 added increased, the amount of menthol migration also increased further.

[0117] This means that the limitation in increasing the amount of menthol transferred due to WS-3 with low solubility can be overcome by adding WS-23, and that a more effective menthol cooling sensation can be provided by including all of menthol, WS-3, and WS-23.

[0118]

[0119] The description of the above-described embodiments is merely illustrative, and those skilled in the art will appreciate that various modifications and equivalent alternative embodiments are possible. Therefore, the true scope of protection for the invention should be defined by the appended claims, and all differences within the scope equivalent to the claims should be construed as being included within the scope of protection defined by the claims.

[0120] The features and aspects of any of the above-described embodiments may be combined with the features and aspects of any other embodiments without resulting in an obvious technical conflict.

Claims

1. Moisturizer containing propylene glycol (PG) and vegetable glycerin (VG); WS-3 (N-ethyl-5-methyl-2-(1-methylethyl)cyclohexanecarboxamide); and A composition for an aerosol generating system comprising menthol.

2. In paragraph 1, A composition for an aerosol generating system, wherein the weight ratio of propylene glycol (PG) and vegetable glycerin (VG) among the above moisturizers is 8:2 to 2:

8.

3. In paragraph 1, A composition for an aerosol generating system, wherein the content of WS-3 is 1.5 wt% or less based on the composition.

4. In paragraph 1, The weight ratio of propylene glycol (PG) and vegetable glycerin (VG) in the above moisturizer is 5:

5. A composition for an aerosol generating system, wherein the content of the above WS-3 is 1.5 wt% or less based on the above composition.

5. In paragraph 1, A composition for an aerosol generating system, wherein menthol is present in an amount of 10 to 15 wt% based on the composition.

6. In paragraph 1, A composition for an aerosol generating system, wherein the composition further comprises WS-23 (N,2,3-trimethyl-2-isopropyl butanamide).

7. In paragraph 6, WS-23 is a composition for an aerosol generating system, wherein the composition is greater than 0 and less than 5 wt% based on the above composition.

8. In paragraph 1, A composition for an aerosol generating system, wherein the aerosol generating system is a non-heating type or a low-temperature heating type of 0°C to 150°C.

9. In a cartridge for an aerosol generating system comprising a liquid composition, A cartridge for an aerosol generating system, wherein the liquid composition comprises a moisturizer comprising propylene glycol (PG) and vegetable glycerin (VG), WS-3 (N-ethyl-5-methyl-2-(1-methylethyl)cyclohexanecarboxamide) and menthol.

10. An aerosol-generating article comprising a medium portion and one or more filter portions, and An aerosol generating device comprising a battery, a control unit, and a vaporizer, The above medium comprises at least one of reconstituted tobacco, tobacco filler and tobacco granules, The surface of at least one of the above reconstituted tobacco, tobacco filler and tobacco granules is sprayed with a liquid composition, The liquid composition comprises an aerosol-generating system comprising a moisturizer including propylene glycol (PG) and vegetable glycerin (VG), WS-3 (N-ethyl-5-methyl-2-(1-methylethyl)cyclohexanecarboxamide) and menthol.

11. In paragraph 10, The aerosol generating device further comprises a cartridge, An aerosol generating system, wherein the cartridge comprises the liquid composition.

12. In paragraph 10, An aerosol generating system, wherein the liquid composition is sprayed into one or more of the filter sections.

13. In paragraph 10, An aerosol-generating article, wherein at least one of the above-mentioned reconstituted tobacco, tobacco curd and tobacco granules is pH-treated to have a pH of 7.0 to 9.5 or less.

14. In paragraph 10, An aerosol-generating article, wherein at least one of the above-mentioned reconstituted tobacco, tobacco curd and tobacco granules generates volatile free nicotine under non-heated conditions or under low-temperature heating conditions of 0°C to 150°C.

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