Aerosol generating article and aerosol generating system

Abstract

Various embodiments of the aerosol-generating article include an atomization segment and a medium segment that is pH-treated and positioned downstream of the atomization segment, and when the atomization segment is heated, heat from the heated atomization segment can be indirectly transferred to the medium segment.

Description

[Technical Field]

[0001] The following examples relate to aerosol-generating articles and aerosol-generating systems. [Background technology]

[0002] In recent years, there has been a growing demand for alternative products that overcome the shortcomings of traditional cigarettes. For example, there is a growing demand for devices that generate aerosols by electrically heating cigarette sticks (e.g., cigarette-type electronic cigarettes). As a result, there has been a lot of research being conducted on electrically heated aerosol generators and cigarette sticks (or aerosol-generating articles) to which they are applied. For example, Published Patent Publication No. 10-2017-0132823 discloses a non-combustion type flavor inhaler, a flavor source unit, and an atomizing unit. [Overview of the initiative] [Problems that the invention aims to solve]

[0003] The objective of one embodiment is to provide an aerosol generating article and an aerosol generating system containing the same, which can achieve a desired amount of nicotine transfer by indirect heating even when pH treatment is performed at a relatively low level.

[0004] The objective of one embodiment is to provide an aerosol generation system that can generate aerosols using an aerosol generator that does not have a separate vaporizer.

[0005] The objective of one embodiment is to provide an aerosol generating article and an aerosol generating system containing the same that can minimize instability caused by free nicotine through pH adjustment. [Means for solving the problem]

[0006] Aerosol generating articles according to various embodiments include an atomizing segment and a pH-treated medium segment located downstream of the atomizing segment, wherein when the atomizing segment is heated, the heat from the heated atomizing segment can be indirectly transferred to the medium segment.

[0007] The system may further include a filter segment located downstream of the medium segment, on which nicotine is adsorbed.

[0008] Nicotine adsorbed on the filter segment can be transferred from the medium segment.

[0009] The medium segment can be pH-treated so that its pH is in the range of 7.0 to 9.5.

[0010] The atomizing segment may further include a thermally conductive wrapper, the thermally conductive wrapper may further enclose the medium segment.

[0011] The medium substrate filled in the medium segment may contain at least one component from among leaf tobacco and granular tobacco.

[0012] The humectant filled in the atomizing segment may contain at least one component from glycerin and propylene glycol.

[0013] Aerosol generating systems according to various embodiments include an aerosol generating article comprising an atomizing segment, a medium segment disposed downstream of the atomizing segment, and a filter segment disposed downstream of the medium segment; an aerosol generating device comprising a control unit including at least one processor, a heater for heating the aerosol generating article, and an elongated cavity housing the aerosol generating article, wherein nicotine can be adsorbed onto the filter segment.

[0014] The medium segment is pH-treated, and nicotine adsorbed on the filter segment can be transferred from the medium segment.

[0015] The medium segment is pH-treated, and when the heater heats the atomizing segment, the heat from the heated atomizing segment can be indirectly transferred to the medium segment.

[0016] The aerosol generating article may further include a thermally conductive wrapper containing an aluminum component, which encloses at least one of the atomizing segment and the medium segment. [Effects of the Invention]

[0017] An aerosol generating article and aerosol generating system according to one embodiment can cause efficient and uniform nicotine transfer.

[0018] An aerosol generating article and aerosol generating system according to one embodiment can provide a uniform flavor intensity.

[0019] An aerosol-generating article and aerosol-generating system according to one embodiment can reduce the occurrence of off-flavors and odors.

[0020] The effects of the aerosol generating system according to one embodiment are not limited to those mentioned above, and other effects not mentioned will be clearly understood by an ordinary person from the following description.

[0021] The following drawings accompanying this specification illustrate a preferred embodiment of the present invention and, together with the detailed description of the invention, serve to further illustrate the technical idea of ​​the invention; therefore, the present invention should not be construed as being limited only to the matters described in such drawings. [Brief explanation of the drawing]

[0022] [Figure 1] This is a block diagram of an aerosol generating article according to one embodiment. [Figure 2] It is a diagram schematically showing the structure of an aerosol generator. [Figure 3] It is a diagram schematically showing the structure of an aerosol generating article according to an embodiment. [Figure 4] It is a diagram schematically showing an aerosol generation system in which an aerosol generating article is coupled to an aerosol generator according to an embodiment.

Modes for Carrying Out the Invention

[0023] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes can be made to the embodiments, the scope of the rights is not limited or restricted by these embodiments. It should be understood that all changes, equivalents or alternatives to the embodiments are included in the scope of the rights.

[0024] The terms used in the embodiments are used for the purpose of explanation only and should not be construed as an intention to limit. Singular expressions include plural expressions unless the context clearly has a different meaning. In this specification, terms such as "including" or "having" specify the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and do not preclude the presence or addition possibility of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0025] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those having ordinary knowledge in the technical field to which the embodiments belong. Terms defined in commonly used dictionaries, etc., should be construed as having a meaning consistent with the meaning in the context of the related technology, and should not be construed as an ideal or overly formal meaning unless clearly stated in this application.

[0026] Furthermore, when explaining with reference to the attached drawings, the same reference numerals will be used for identical components, regardless of the reference numerals in the drawings, and redundant explanations will be omitted. When describing embodiments, if it is determined that a specific explanation of related prior art may unnecessarily obscure the gist of the embodiment, such detailed explanation will be omitted.

[0027] Furthermore, when describing the components of the embodiments, terms such as 1st, 2nd, A, B, (a), (b), etc., may be used. These terms are used to distinguish a component from other components, and the terms do not limit the nature, order, or sequence of the component in question. When it is stated that a component is “connected,” “joined,” or “connected” to another component, it should be understood that the component is directly connected or connected to the other component, but also that other components are “connected,” “joined,” or “connected” between each component.

[0028] Components included in any one embodiment and components with common functions will be described using the same names in other embodiments. Unless otherwise stated, the descriptions in one embodiment are applicable to other embodiments, and specific descriptions will be omitted to the extent that they overlap.

[0029] In the following examples, “humectant” can mean 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-forming agent and wetting agent.

[0030] In the following embodiments, "aerosol-forming substrate" can mean a substance 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 substance based on tobacco raw materials such as flat tobacco leaves, shredded tobacco, or reconstituted tobacco, and a liquid aerosol-forming substrate may include a liquid composition based on nicotine, tobacco extracts, and / or various flavoring agents. However, the scope of this disclosure is not limited to these examples.

[0031] In the following embodiments, "aerosol-generating article" can mean an article that contains a medium, through which an aerosol passes and the medium is transferred. A typical example of an aerosol-generating article is a cigarette, but the scope of this disclosure is not limited to this.

[0032] In the following embodiments, "aerosol generator" can mean a device that generates an aerosol using an aerosol-forming substrate in order to generate an aerosol that can be directly inhaled into the user's lungs through the user's mouth.

[0033] In the following embodiments, "upstream" or "upstream direction" may mean the direction away from the user's (smoker's) mouth, and "downstream" or "downstream direction" may mean the direction away from the user's mouth. The terms upstream and downstream are used to describe the relative positions of the elements constituting the aerosol generating article.

[0034] In the following examples, "puff" means the user's inhalation, which means drawing something into the user's mouth, nose, or lungs.

[0035] Figure 1 is a block diagram of an aerosol generator according to one embodiment, Figure 2 is a schematic diagram showing the structure of the aerosol generator, Figure 3 is a schematic diagram showing the structure of an aerosol generating article according to one embodiment, and Figure 4 is a schematic diagram showing an aerosol generating system in which an aerosol generating article is coupled to an aerosol generator according to one embodiment.

[0036] Referring to Figures 1 and 2, the aerosol generator 11 according to one embodiment includes a battery 111, a control unit 112, a heater 113, and an elongated cavity 114.

[0037] The aerosol generator 11 shown in Figures 1 and 2 shows components relevant to this embodiment. Therefore, a person with ordinary skill in the art related to this embodiment will understand that, in addition to the components shown in Figures 1 and 2, other general-purpose components may be further included in the aerosol generator 11.

[0038] Figure 2 shows the battery 111, control unit 112, and heater 113 arranged in a row. However, the internal structure of the aerosol generator 11 is not limited to that shown in Figure 2. In other words, the arrangement of the battery 111, control unit 112, and heater 113 can be changed depending on the design of the aerosol generator 11.

[0039] When the aerosol-generating article 2 is inserted into the aerosol generator 11, the aerosol generator 11 activates the heater 113 and generates an aerosol. The aerosol generated by the heater 113 passes through the aerosol-generating article 2 and is transmitted to the user.

[0040] If necessary, the aerosol generator 11 can heat the heater 113 even if the aerosol generating article 2 is not inserted into the aerosol generator 11.

[0041] The battery 111 supplies the power used to operate the aerosol generator 11. For example, the battery 111 can supply power to heat the heater 113 and supply the power necessary for the control unit 112 to operate. The battery 111 can also supply the power necessary for the operation of the display, sensors, motors, etc. installed in the aerosol generator 11.

[0042] 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 heater 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 the aerosol generator 11 is in an operational state.

[0043] The control unit 112 includes at least one processor. The processor may be implemented as an array of numerous logic gates, or as a combination of a general-purpose microprocessor and memory containing a program that can be executed by this microprocessor. It will be understood by those ordinary skill in the art to which this embodiment belongs that it may also be implemented as other forms of hardware.

[0044] The heater 113 is heated by power supplied from the battery 111. For example, when the aerosol generating article 2 is inserted into the aerosol generating device 11, the heater 113 can be located outside the aerosol generating article 2. Thus, the heated heater 113 can raise the temperature of the aerosol generating substance inside the aerosol generating article 2.

[0045] The heater 113 may be an electrical resistive heater 113. For example, the heater 113 includes an electrical conductive track, and the heater 113 is heated as current flows through the electrical conductive track. However, the heater 113 is not limited to the above example and is any heater that heats up to a 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.

[0046] On the other hand, as another example, the heater 113 may be an induction heating heater 113. Specifically, the heater 113 may include an electrically conductive coil for heating the aerosol generating article 2 by induction heating, and the aerosol generating article 2 may include a susceptor that is heated by the induction heating heater 113.

[0047] For example, the heater 113 may include tubular heat transfer elements, plate-shaped heat transfer elements, needle-shaped heat transfer elements, or rod-shaped heat transfer elements, and the inside or outside of the aerosol generating article 2 can be heated depending on the shape of the heat transfer elements.

[0048] Furthermore, the aerosol generator 11 may have multiple heaters 113. In this case, the multiple heaters 113 may be arranged so as to be inserted inside the aerosol generating article 2, or they may be arranged outside the aerosol generating article 2. Alternatively, some of the multiple heaters 113 may be arranged so as to be inserted inside the aerosol generating article 2, and the rest may be arranged outside the aerosol generating article 2. Also, the shape of the heater 113 is not limited to the shape shown in Figure 2, and may be manufactured in various shapes.

[0049] In one embodiment, the elongated cavity 114 may contain an aerosol-generating article 2. In one embodiment, the heater 113 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 113 may be positioned to surround at least a portion of the outer surface of the elongated cavity 114.

[0050] On the other hand, the aerosol generator 11 may further include general-purpose components in addition to the battery 111, control unit 112, heater 113, and elongated cavity 114. For example, the aerosol generator 11 may further include a sensing unit 115, output unit 116, user input unit 117, memory 118, and communication unit 119.

[0051] The sensing unit 115 can sense the state of the aerosol generator 11 or the state of the area around the aerosol generator 11 and transmit the sensed information to the control unit 112. Based on the sensed information, the control unit 112 can control the aerosol generator 11 so that various functions are performed, such as controlling the operation of the heater 113, restricting smoking, determining whether or not to insert an aerosol generating item 12 (e.g., cigarettes, cartridges, etc.), and displaying notifications.

[0052] The sensing unit 115 may include, but is not limited to, at least one of the temperature sensor 1151, insertion sensing sensor 1152, and puff sensor 1153.

[0053] The temperature sensor 1151 can sense the temperature at which the heater 113 (or the aerosol generating material) is heated. The aerosol generator 11 may include a separate temperature sensor that senses the temperature of the heater 113, or the heater 113 itself may act as the temperature sensor. Alternatively, the temperature sensor 1151 may be positioned around the battery 111 to monitor the temperature of the battery 111.

[0054] The insertion sensing sensor 1152 can detect the insertion and / or removal of the aerosol-generating article 12. For example, the insertion sensing sensor 1152 may include at least one of a film sensor, a pressure sensor, a light sensor, a resistive sensor, a capacitive sensor, an inductive sensor, and an infrared sensor, and can detect a change in signal caused by the insertion and / or removal of the aerosol-generating article 12.

[0055] The puff sensor 1153 can detect a user's puff based on various physical changes in the airflow passage or airflow channel. For example, the puff sensor 1153 can detect a user's puff based on any of the following: temperature changes, flow rate changes, voltage changes, and pressure changes.

[0056] In addition to the aforementioned sensors (1151-1153), the sensing unit 115 may further include at least one of the following: a temperature / humidity sensor, a pressure sensor, a magnetic sensor, an acceleration sensor, a gyroscope sensor, a position sensor (e.g., GPS), a proximity sensor, and an RGB sensor (illuminance sensor). The function of each sensor can be intuitively inferred by an average engineer from its name, so a detailed explanation can be omitted.

[0057] The output unit 116 can output and provide to the user information regarding the status of the aerosol generator 11. The output unit 116 may include, but is not limited to, at least one of the display unit 1161, the haptic unit 1162, and the acoustic output unit 1163. If the display unit 1161 and the touchpad form a layered structure to constitute a touchscreen, the display unit 1161 can be used as an input device in addition to an output device.

[0058] The display unit 1161 can visually provide the user with information regarding the aerosol generator 11. For example, the information regarding the aerosol generator 11 can represent various types of information, such as the charging / discharging status of the battery 111 of the aerosol generator 11, the preheating status of the heater 113, the insertion / removal status of the aerosol generating article 12, or a state in which the use of the aerosol generator 11 is restricted (e.g., detection of an abnormal article), and the display unit 1161 can output this information to the outside. The display unit 1161 may be, for example, a liquid crystal display panel (LCD), an organic light-emitting display panel (OLED), or the like. The display unit 1161 may also be in the form of an LED light-emitting element.

[0059] The haptic unit 1162 can convert electrical signals into mechanical or electrical stimuli to provide the user with tactile information about the aerosol generator 11. For example, the haptic unit 1162 may include a motor, a piezoelectric element, or an electrical stimulator.

[0060] The acoustic output unit 1163 can provide the user with auditory information regarding the aerosol generator 11. For example, the acoustic output unit 1163 can convert electrical signals into acoustic signals and output them externally.

[0061] The user input unit 117 can receive information input by the user or output information to the user. For example, the user input unit 117 may be a key pad, dome switch, touch pad (contact-type capacitive type, pressure-type resistive type, infrared sensing type, surface ultrasonic conduction type, integral tension measurement type, piezoelectric effect type, etc.), jog wheel, jog switch, etc., but is not limited to these. Although not shown in Figure 1, the aerosol generator 11 may also include a connection interface such as a USB (universal serial bus) interface, and can connect to other external devices via the connection interface such as a USB interface to send and receive information or charge the battery 111.

[0062] Memory 118 is hardware that stores various data processed within the aerosol generator 11, and can store data processed by the control unit 112 and data being processed. Memory 118 can include at least one type of storage medium from among flash memory type, hard disk type, multimedia card micro type, card type memory (e.g., SD or XD memory), RAM (random access memory), SRAM (static random access memory), ROM (read-only memory), EEPROM (electrically erasable programmable read-only memory), PROM (programmable read-only memory), magnetic memory, magnetic disk, and optical disk. Memory 118 can store data such as the operating time of the aerosol generator 11, the maximum number of puffs, the current number of puffs, at least one temperature profile, and the user's smoking pattern.

[0063] The communication unit 119 may include at least one component for communication with other electronic devices. For example, the communication unit 119 may include a short-range communication unit 1191 and a wireless communication unit 1192.

[0064] The short-range wireless communication unit (short-range wireless communication unit) 1191 includes a Bluetooth® communication unit, a BLE (Bluetooth Low Energy) communication unit, a Near Field Communication unit, a WLAN (Wi-Fi Direct) communication unit, a Zigbee® communication unit, an infrared (IrDA, infrared Data Association) communication unit, a WFD (Wi-Fi Direct®) communication unit, a UWB (ultra wideband) communication unit, and an Ant + It may include, but is not limited to, a communications department.

[0065] The wireless communication unit 1192 may include, but is not limited to, a cellular network communication unit, an Internet communication unit, or a computer network (e.g., LAN or WAN) communication unit. The wireless communication unit 1192 may also verify and authenticate the aerosol generator 11 within the communication network using subscriber information (e.g., an International Mobile Subscriber Identifier (IMSI)).

[0066] Although not shown in Figures 1 and 2, the aerosol generator 11 can also be configured with a separate cradle. For example, the cradle can be used to charge the battery 111 of the aerosol generator 11. Alternatively, the heater 113 can be heated while the cradle and the aerosol generator 11 are coupled together.

[0067] As an example, outside air can flow in through at least one air passage formed in the aerosol generator 11. For example, the opening and closing of the air passage formed in the aerosol generator 11 and / or the size of the air passage can be adjusted by the user. This allows the amount of atomization, the smoking sensation, etc., to be adjusted by the user. As another example, outside air can also flow into the interior of the aerosol generating article 2 through at least one hole formed on the surface of the aerosol generating article 2.

[0068] Referring to Figure 3, the aerosol generating article 12 according to one embodiment may include an atomizing segment 121, a medium segment 122, a cooling segment 123, a filter segment 124, and a wrapper 125.

[0069] The atomizing segment 121 is located upstream of or in the upstream direction of the medium segment 122, the medium segment 122 is located upstream of or in the upstream direction of the cooling segment 123, and the cooling segment 123 is located upstream of or in the upstream direction of the filter segment 124.

[0070] The atomizing segment 121 may contain aerosol-generating substances other than nicotine. For example, the humectant filled in the atomizing segment 121 may contain, but is not limited to, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. The atomizing segment 121 may also contain other additives such as flavoring agents, humectants, and / or organic acids. Furthermore, the atomizing segment 121 may contain a flavoring liquid such as menthol or a humectant. The atomizing segment enables aerosol generation even without a separate vaporizer being provided in the aerosol generator.

[0071] The atomizing segment 121 may include a winding sheet, and humectants may be included in the atomizing segment 121 in a state absorbed by the winding sheet. In addition, other additives such as flavoring agents, humectants and / or organic acids, and fragrance liquids may be included in the atomizing segment 121 in a state absorbed by the winding sheet.

[0072] The length of the atomizing segment 121 can be set to an appropriate length within the range of 4 mm to 12 mm, but is not limited to these dimensions.

[0073] The medium segment 122 may contain nicotine. The medium segment 122 may also contain aerosol-generating substances such as glycerin. Furthermore, the medium segment 122 may contain other additives such as flavoring agents, humectants, and / or organic acids. Additionally, a flavoring liquid such as menthol or a humectant may be added to the medium segment 122 by spraying it.

[0074] The medium segment 122 can be manufactured in various ways. For example, the medium substrate filled in the medium segment 122 may contain at least one component from among flat tobacco leaves, granular tobacco, reconstituted tobacco, and shredded tobacco.

[0075] The length of the medium segment 122 can be set to an appropriate length within the range of 6 mm to 18 mm, but is not limited to these dimensions.

[0076] The cooling segment 123 can generate a cooling effect on the aerosol. Therefore, the user can inhale the aerosol cooled to an appropriate temperature.

[0077] For example, the cooling segment 123 may be made of cellulose acetate and may be a tubular structure containing a hollow interior. For example, the cooling segment 123 may be made by adding a plasticizer (e.g., triacetin) to cellulose acetate tow.

[0078] For example, the cooling segment 123 may be made of paper and may be a tubular structure containing a hollow interior.

[0079] The diameter of the hollow portion of the cooling segment 123 can be any suitable diameter within the range of 4 mm to 8 mm, but is not limited to this range. The length of the cooling segment 123 can be any suitable length within the range of 4 mm to 30 mm, but is not limited to this range.

[0080] The cooling segment 123 is not limited to the examples described above, but is applicable without restriction as long as it can perform the function of cooling the aerosol.

[0081] The filter segment 124 may be made by adding a plasticizer (e.g., triacetin) to cellulose acetate tow. The length of the filter segment 124 can be any length within the range of 4 mm to 30 mm, but is not limited to these ranges.

[0082] The filter segment 124 may be manufactured to generate flavor. For example, a flavoring liquid may be sprayed onto the filter segment 124, or a separate fiber coated with the flavoring liquid may be inserted into the filter segment 124.

[0083] Furthermore, the filter segment 124 may contain at least one capsule. Here, the capsule may perform a function of generating flavor or a function of generating an aerosol. For example, the capsule may have a structure in which a liquid containing a flavor is enclosed in a film. The capsule may have a spherical or cylindrical shape, but is not limited to these.

[0084] The aerosol-generating article 12 may be wrapped by at least one wrapper 125. The wrapper 125 may have at least one hole formed therein, through which outside air flows in or internal gases flow out.

[0085] For example, the atomizing segment 121 may be wrapped by a first wrapper 1251, the medium segment 122 by a second wrapper 1252, the cooling segment 123 by a third wrapper 1253, and the filter segment 124 by a fourth wrapper 1254. The entire aerosol generating article 12 may then be re-wrapped by a fifth wrapper 1255.

[0086] Alternatively, as shown in Figure 3, the atomizing segment 121 may be wrapped by a first wrapper 1251, the medium segment 122 by a second wrapper 1252, the cooling segment 123 by a third wrapper 1253, and the filter segment 124 by a fourth wrapper 1254. The entire aerosol generating article 12 may then be re-wrapped by a fifth wrapper 1255.

[0087] In one embodiment, the first wrapper 1251 may contain an aluminum component. The first wrapper 1251 may be a general filter wrapping paper bonded with a metal foil such as aluminum foil. For example, the total thickness of the first wrapper 1251 may be in the range of 40 μm to 80 μm. Also, the thickness of the metal foil of the first wrapper 1251 may be in the range of 6 μm to 20 μm.

[0088] The second wrapper 1252 and the third wrapper 1253 may be made of porous wrapping paper.

[0089] For example, the porosity of the second wrapper 1252 may be 35,000 CU, but is not limited to this. The thickness of the second wrapper 1252 may be within the range of 70 μm to 80 μm. The basis weight of the second wrapper 1252 is 20 g / m². 2 ~25g / m 2 It may be included within the range.

[0090] For example, the porosity of the third wrapper 1253 may be 35000 CU, but it is not limited thereto. Also, the thickness of the third wrapper 1253 may be included within the range of 70 μm to 80 μm. Also, the basis weight of the third wrapper 1253 may be included within the range of 20 g / m 2 ~25 g / m 2 and may be included within the range.

[0091] In one embodiment, the second wrapper 1252 can contain an aluminum component. For example, the second wrapper 1252 may be one in which a metal foil such as an aluminum foil is bonded to a general filter roll paper.

[0092] Also, the second wrapper 1252 may be made of the final outer skin.

[0093] The fourth wrapper 1254 may be made of a PLA laminated paper. Here, the PLA laminated paper means a triple paper including a paper layer, a PLA layer, and a paper layer. For example, the thickness of the fourth wrapper 1254 may be included within the range of 100 μm to 120 μm. Also, the basis weight of the fourth wrapper 1254 may be included within the range of 80 g / m 2 ~100 g / m 2 and may be included within the range.

[0094] The fifth wrapper 1255 may be made of the final outer skin. For example, the basis weight of the fifth wrapper 1255 may be included within the range of 57 g / m 2 ~63 g / m 2 and may be included within the range. Also, the thickness of the fifth wrapper 1255 may be included within the range of 64 μm to 70 μm.

[0095] Referring to FIGS. 3 and 4, the medium segment 122 according to one embodiment can be pH-treated and indirectly heated by the heater 113.

[0096] In one embodiment, the medium segment 122 may contain a pH-treated medium substrate. For example, the medium substrate can be pH-treated to be basic with a pH adjusting agent, which is basic and may include at least one of the following substances: potassium carbonate (K2CO3), sodium bicarbonate (NaHCO3), and calcium oxide (CaO). However, the substance included in the pH adjusting agent is not limited to the above examples, and any substance that produces less negative odor during smoking can be used. A basic pH adjusting agent can increase the pH of the medium substrate contained in the medium segment 122. Compared to a medium substrate not treated with a basic pH adjusting agent, a basic pH-treated medium substrate increases the amount of nicotine released when heated. That is, in the case of a basic pH-treated medium substrate, a sufficient nicotine yield can be achieved even when the medium segment 122 is heated at a low temperature.

[0097] In one embodiment, the medium segment 122 may contain plate-like leaves with a pH adjusted to the range of 7.0 to 9.5, or be filled with tobacco granules with a pH adjusted to the range of 7.0 to 9.5. The medium substrate, such as plate-like leaves or tobacco granules, may contain nicotine, and by pH treatment, free nicotine can be easily transferred from the medium substrate even under non-heating conditions or relatively low temperature conditions. That is, by adjusting the pH of the medium substrate of the medium segment 122 to the range of 7.0 to 9.5, a small amount of volatile free nicotine can be transferred even under non-heating conditions, achieving a low to intermediate level of flavor intensity. Furthermore, with low-temperature heating, the transfer of nicotine is promoted and the amount of nicotine transferred is increased, thereby achieving an intermediate to high level of flavor intensity. Thus, in the aerosol generating article 12 according to one embodiment, the amount of nicotine transferred can be easily adjusted even with non-heating or low-temperature heating.

[0098] In one embodiment, the first wrapper 1251 of the aerosol generating article 12 may contain a thermally conductive material (e.g., an aluminum component), and the second wrapper 1252 may also contain a thermally conductive material (e.g., an aluminum component). In one embodiment, the aerosol generating article 12 may be housed in an elongated cavity 114 of the aerosol generating device 11, and with the aerosol generating article 12 housed in the elongated cavity 114, the heater 113 may surround the atomizing segment 121. For example, the downstream end of the heater 113 may be adjacent to the downstream end of the atomizing segment 121, or positioned between the upstream and downstream ends of the atomizing segment 121. By heating the heater 113, the temperature of the atomizing segment 121 may be increased. The atomizing segment 121 is surrounded by the heater 113 and receives heat directly through the first wrapper 1251, while the medium segment 122 can receive heat indirectly through the first wrapper 1251 and along the second wrapper 1252. Even if the second wrapper 1252 is not surrounded by the heater 113, it can receive heat indirectly from the heater 113, thus enabling low-temperature heating of the medium segment 122.

[0099] Alternatively, the first wrapper 1251 of the aerosol generating article 12 according to one embodiment may contain a thermally conductive material (e.g., an aluminum component), and the second wrapper 1252 may not contain a thermally conductive material. In this case, when the atomizing segment 121 is heated, the heat transferred from the heater 113 to the atomizing segment 121 through the first wrapper 1251 can be indirectly transferred to the medium segment 122, or the heat contained in the aerosol from the atomizing segment 121 can be indirectly transferred to the medium segment 122.

[0100] If heat is not transferred to the medium segment 122, a relatively high pH treatment is required. However, in the aerosol generation system 1 according to one embodiment, the medium segment 122 is heated at a low temperature, so efficient and uniform nicotine transfer can be achieved even when treated at a relatively low pH range of 7.0 to 9.5. By treating the medium segment 122 at a relatively low pH range of 7.0 to 9.5, instability due to volatile free nicotine can be reduced, thereby increasing the uniformity of flavor intensity and reducing off-flavors.

[0101] In one embodiment, nicotine can be adsorbed onto the filter segment 124. The nicotine adsorbed onto the filter segment 124 can be transferred from the medium segment 122. For example, by treating the medium segment 122 with a pH in the range of 7.0 to 9.5, nicotine in the medium segment 122 can be actively transferred even at room temperature. Therefore, the nicotine transferred from the medium segment 122 can be adsorbed onto the filter segment 124. In other words, the nicotine in the medium segment 122 can be transferred to and adsorbed onto the filter segment 124. When the user puffs, the aerosol generated in the atomizing segment 121 passes through the filter segment 124, and the nicotine adsorbed onto the filter segment 124 can also be inhaled by the user. In this way, not only nicotine in the medium segment 122 but also nicotine in the filter segment 124 can be transferred, so sufficient nicotine transfer can be ensured even in the case of non-heating or indirect heating.

[0102] In one embodiment, the nicotine transfer described above may occur during a set period at room temperature. Table 1 below shows the amount of nicotine transferred to the first medium segment (e.g., medium segment 122), the second medium segment, and the filter segment 124 over time, and the experiment was conducted under a temperature condition of 22°C. The experiment in Table 1 below was conducted with the second medium segment applied instead of the cooling segment 123, and the same / similar experimental results can be obtained even if the cooling segment 123 is applied instead of the second medium segment. Referring to Table 1, it can be seen that nicotine is transferred to the filter segment 124 after 4 weeks. Furthermore, according to the analysis of the smoke components, it can be seen that the amount of nicotine increases while the amount of atomization remains constant.

[0103] Furthermore, even after four weeks, there was no significant change in the amount of nicotine transferred to filter segment 124, indicating that the amount of nicotine transferred stabilized. Analysis of the smoke components also revealed that the amount of atomization and nicotine stabilized.

[0104] As a result, it was found that transferring nicotine to the filter segment 124 for four weeks is ideal. Furthermore, it was found that the amount of nicotine transferred, the amount of vaporized smoke components, and the amount of nicotine remained stable even after four weeks. Therefore, it is preferable to set the nicotine transfer treatment period to four weeks.

[0105] [Table 1]

[0106] The above-described embodiments are illustrative only, and any person with ordinary skill in the art will understand that various modifications and equivalent embodiments are possible therefrom. Therefore, the true scope of protection of the invention should be determined by the attached claims, and all differences within the scope equivalent to that described in the claims should be interpreted as being included within the scope of protection defined by the claims.

[0107] Any features and modes of the aforementioned embodiments may be combined with any other features and modes of embodiments, provided that this does not result in an obvious technical conflict.

Claims

1. Aerosol-generating article, Atomization segment and A pH-treated medium segment is placed downstream of the atomizing segment, The medium segment is disposed downstream of the medium segment and includes a filter segment on which nicotine is adsorbed. When the atomizing segment is heated, the heat from the heated atomizing segment is indirectly transferred to the medium segment. The nicotine adsorbed on the filter segment is transferred from the medium segment. For the transfer of nicotine, the aerosol generating article has a nicotine transfer processing period. The processing period for the aforementioned metastasis is at least four weeks. The medium substrate filled in the medium segment is pH-treated so that its pH is in the range of 7.0 to 9.

5. The atomizing segment further comprises a thermally conductive wrapper, The thermally conductive wrapper extends to further enclose the medium segment. Aerosol-generating articles.

2. The aerosol generating article according to claim 1, wherein the medium substrate filled in the medium segment contains at least one component from plate-shaped tobacco leaves and granular tobacco.

3. The aerosol generating article according to claim 1, wherein the humectant filled in the atomizing segment comprises at least one component selected from glycerin and propylene glycol.

4. Aerosol generation system, an aerosol generating article including an atomizing segment, a medium segment disposed downstream of the atomizing segment, and a filter segment disposed downstream of the medium segment, A control unit including at least one processor, a heater for heating the aerosol generating article, and an aerosol generating device including an elongated cavity in which the aerosol generating article is housed, Includes, Nicotine is adsorbed onto the filter segment. The medium substrate filled in the medium segment is pH treated. The nicotine adsorbed on the filter segment is transferred from the medium segment. For the transfer of nicotine, the aerosol generating article has a nicotine transfer processing period. The processing period for the aforementioned metastasis is at least four weeks. The medium substrate filled in the medium segment is pH-treated so that its pH is in the range of 7.0 to 9.

5. The atomizing segment further comprises a thermally conductive wrapper, The thermally conductive wrapper extends to further enclose the medium segment. Aerosol generation system.

5. The aerosol generating system according to claim 4, wherein the thermally conductive wrapper encloses the atomizing segment and the medium segment and contains an aluminum component.

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