Sheet for aerosol-generating article and aerosol-generating article comprising same

Abstract

The present disclosure relates to a sheet for an aerosol-generating article having excellent stability and improved processability by including a moisture-regulating agent, and an aerosol-generating article including the same.

Description

Technical Field

[0001] The present disclosure relates to a sheet for an aerosol-generating article having excellent processability and stability and an aerosol-generating article including the same.Background Art

[0002] Recently, there has been an increasing demand for alternative methods that overcome the disadvantages of conventional cigarettes. For example, there has been an increasing demand for a method of generating aerosol by heating an aerosol-generating material such as a medium, rather than a method of generating aerosol by burning a cigarette.

[0003] Meanwhile, an aerosol-generating article also contains tobacco leaves, like conventional cigarettes, but there is a problem in that the tobacco leaves have a unique flavor in addition to nicotine, and thus cause off-flavor when the user smokes.[Prior Art Documents][Patent Documents]

[0004] Korean Patent Application Publication No. 10-2022-0026430 (published on March 4, 2022)DISCLOSURE Technical Problem

[0005] The present disclosure is intended to provide a sheet for an aerosol-generating article having excellent stability and improved processability by including a moisture-regulating agent, and an aerosol-generating article including the same.

[0006] However, the problems to be solved by the present disclosure are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.Technical Solution

[0007] According to a first aspect of the present disclosure, there is provided a sheet for an aerosol-generating article, comprising: an active material; an aerosol-generating material; a support; and a moisture-regulating agent comprising a compound represented by Formula 1 below:

[0008] In Formula 1 above, R 1 is hydrogen or a hydroxyl group, and R 2 to R 4 are each independently a carboxyl group (-CO 2 H); R 11 is a linear or branched alkyl group having 1 to 3 carbon atoms, and R 12 is a linear or branched alkyl group having 3 to 12 carbon atoms.

[0009] According to a second aspect of the present disclosure, in the first aspect, the moisture-regulating agent may comprise a compound represented by Formula 1-1 below:

[0010] In Formula 1-1 above, R 1 is a hydroxyl group, R 21 to R 23 are each independently hydrogen; or a linear or branched alkyl group having 1 to 3 carbon atoms; and at least one of R 21 to R 23 is a linear or branched alkyl group having 1 to 3 carbon atoms.

[0011] According to a third aspect of the present disclosure, in the first aspect or the second aspect, the moisture-regulating agent may comprise a compound represented by Formula 1-2 below:

[0012] In Formula 1-2 above, R 31 to R 33 are each independently a linear or branched alkyl group having 3 to 12 carbon atoms.

[0013] According to a fourth aspect of the present disclosure, in any one of the first to third aspects, the content of the active material may be 0.1 parts by weight or more and 8 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article.

[0014] According to a fifth aspect of the present disclosure, in any one of the first to fourth aspects, the content of the aerosol-generating material may be 5 parts by weight or more and 50 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article.

[0015] According to a sixth aspect of the present disclosure, in any one of the first to fifth aspects, the content of the support may be 20 parts by weight or more and 80 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article.

[0016] According to a seventh aspect of the present disclosure, in any one of the first to sixth aspects, the content of the moisture-regulating agent may be 0.1 parts by weight or more and 5 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article.

[0017] According to an eighth aspect of the present disclosure, in any one of the first to seventh aspects, the weight ratio between the moisture-regulating agent and the aerosol-generating material may be in a range of 1:3 to 1:100.

[0018] According to a ninth aspect of the present disclosure, in any one of the first to eighth aspects, the sheet for an aerosol-generating article may further comprise a filler and a binder.

[0019] According to a tenth aspect of the present disclosure, in the ninth aspect, the content of the filler may be 3 parts by weight or more and 8 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article, and the content of the binder may be 3 parts by weight or more and 15 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article.

[0020] According to an eleventh aspect of the present disclosure, in any one of the first to tenth aspects, the sheet for an aerosol-generating article may have a water contact angle of 70° or more and 130° or less.

[0021] According to a twelfth aspect of the present disclosure, in any one of the first to eleventh aspects, the sheet for an aerosol-generating article may further comprise an additive comprising at least one of a bulking agent, an emulsifier, a flavoring agent, an extract, and a vitamin component.

[0022] According to a thirteenth aspect of the present disclosure, there is provided an aerosol-generating article, comprising: a first segment; a second segment disposed on one side of the first segment; a third segment disposed on one side of the second segment; and a fourth segment disposed on one side of the third segment, the second segment comprises the sheet for an aerosol-generating article according to any one of the first to twelfth aspects.Advantageous Effects

[0023] A sheet for an aerosol-generating article according to one embodiment of the present disclosure may have excellent stability and processability by including a specific type of moisture-regulating agent.

[0024] In addition, an aerosol-generating article according to one embodiment of the present disclosure may have excellent stability and provide improved smoking properties by including the sheet for an aerosol-generating article.

[0025] The effects of the present disclosure are not limited to the above-described effects, and effects not mentioned will be clearly understood by those skilled in the art from the present specification and the accompanying drawings.Brief Description of Drawings

[0026] FIG. 1 is a perspective view showing an aerosol-generating article according to one embodiment of the present disclosure. FIG. 2 is a schematic view showing an aerosol-generating device according to one embodiment of the present disclosure. FIG. 3 is a schematic view showing an aerosol-generating device according to another embodiment of the present disclosure. FIG. 4 is a cross-sectional view showing a modified example of the sheet for the aerosol-generating article shown in each of FIGS. 2 and 3. Best Mode

[0027] In the present specification, singular expressions include plural expressions unless the context clearly indicates otherwise.

[0028] In the present specification, the term "comprises" and / or "comprising" are / is intended to denote the existence of one or more stated shapes, steps, numbers, operations, members, elements, and / or combinations thereof, but do / does not exclude the existence or addition of one or more other shapes, steps, numbers, operations, members, elements, and / or combinations thereof.

[0029] In the present specification, "at least one of a, b and c" may include a, b or c alone, or a combination of two or more selected from the group consisting of a, b and c.

[0030] In the present specification, the term "a and / or b" is meant to include "a or b" and "a and b".

[0031] In the present specification, the term "connection" means not only that certain members are structurally connected directly to each other, but also that they are connected indirectly via a third member interposed therebetween. In addition, in the present specification, "connection" may be a concept that includes not only structural connection but also a case where a certain member is electrically connected to another member. For example, the connection between a first component and a second component may mean that they are structurally directly or indirectly connected, or electrically connected.

[0032] When multiple embodiments are described in the present specification, these embodiments may be combined with each other unless otherwise particularly stated. In this case, the effects of the present disclosure may be defined as including not only the effect resulting from each embodiment itself, but also the effect resulting from the organic combination of embodiments. For example, even if Embodiments 1 and 2 are described independently in the present specification, Embodiments 1 and 2 may be organically combined with each other, and the effects of the present disclosure may include effects resulting from the combination of Embodiments 1 and 2, unless the context clearly indicates otherwise.

[0033] In the present specification, expressions such as "first", "second", "(S1)", "(S2)", etc. may modify various components, irrespective of an order and / or importance, and should not be construed as limiting the components. These expressions may be used to distinguish one component from other components. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the scope of the present disclosure.

[0034] In the present specification, the range of numerical values expressed using the term "numerical value to numerical value" denotes a range of numerical values that includes numerical values described before and after the term "to" as a lower limit value and an upper limit value. When a plurality of numerical values as the upper and lower limits of an arbitrary numerical range are disclosed, the numerical range disclosed in the present specification may be understood as a range of arbitrary numerical values including any one value among the plurality of lower limit values and any one value among the plurality of upper limit values as a lower limit value and an upper limit value, respectively. For example, if "a to b" or "c to d" is described in the specification, it may be understood that "a or more and b or less", "a or more and d or less", "c or more and d or less", or "c or more and b or less" is described.

[0035] In the present specification, terms such as "about" or "substantially" mean a reasonable amount of deviation of the modified term such that the end result is not significantly changed. These terms may be construed as including a deviation of at least ±5% or at least ±10% of the modified term if this deviation would not negate the meaning of the word it modifies.

[0036] In the present specification, the term "tobacco material" is not particularly limited and may include tobacco raw materials such as tobacco leaves and tobacco stems, and materials processed therefrom. For example, the tobacco material may include tobacco leaves; expanded tobacco stems; tobacco cut fillers such as leaf tobacco cut fillers and reconstituted tobacco leaf cut fillers; tobacco sheets such as reconstituted tobacco leaf sheets; granular tobacco; or liquid tobacco compositions, etc. For example, the state of the tobacco material is not particularly limited and may be a solid or a liquid state.

[0037] In the present specification, the term "sheet" may be defined as meaning a sub-sheet whose width, length, and thickness may be defined, or a laminate in which two or more sub-sheets are laminated. For example, the shape of the sheet is not particularly limited, and may be a shape of a single crimped sheet, or a shape in which two or more cut sub-sheets are laminated. For example, when two or more cut sub-sheets are laminated, each of the sub-sheets may also have a crimped shape.

[0038] In the present specification, the term "upstream" or "upstream direction" may mean a direction away from the smoker's mouth, and the term "downstream" or "downstream direction" may mean a direction toward the smoker's mouth. The terms "upstream" and "downstream" may be used to describe the relative positions of elements that make up the aerosol-generating article.

[0039] In the present specification, the term "longitudinal direction" may mean a direction corresponding to the longitudinal axis of the aerosol-generating article.

[0040] In the present specification, the "weight-average molecular weight" of any compound may be calculated using the molecular weight and molecular weight distribution of the compound. At this time, the weight-average molecular weight may be calculated using a method and device used in the art. For example, the weight-average molecular weight may be analyzed using a gel permeation chromatography (GPC) device or a gel filtration chromatography (GFC) device depending on the properties of the compound. For example, in the case of the GPC analysis method, the molecular weight and molecular weight distribution of the compound may be obtained by: placing tetrahydrofuran (THF) and the compound in a 1 ml glass vial to prepare a test sample in which the concentration of the compound is 1 wt%; filtering a standard sample (polystyrene) and the test sample through a filter (pore size: 0.45 µm); injecting each of the sample filtrates into a GPC injector; and comparing the elution time of the test sample with a calibration curve of the standard sample. At this time, Infinity II 1260 (Agilent Technologies, Inc.) may be used as a measurement instrument, and the flow rate and the column temperature may be set at 1.00 mL / min and 40.0°C, respectively. Meanwhile, in the case of the GFC analysis method, the column may be an Agilent 1200 Series HPLC system, the flow rate may be 1 mL / min, the mobile phase may be 0.02% sodium azide, the detector may be an evaporative light scattering detector (ELSD, Altech), and the calibration curve may be obtained from pullulan.

[0041] Hereinafter, the configuration of the present disclosure will be described in more detail with reference to the drawings.Sheet for Aerosol-Generating Article

[0042] One embodiment of the present disclosure provides a sheet for an aerosol-generating article, including: an active material; an aerosol-generating material; a support; and a moisture-regulating agent including a compound represented by Formula 1 below:

[0043] In Formula 1 above, R 1 is hydrogen or a hydroxyl group, and R 2 to R 4 are each independently a carboxyl group (-CO 2 H), R 11 is a linear or branched alkyl group having 1 to 3 carbon atoms, and R 12 is a linear or branched alkyl group having 3 to 12 carbon atoms.

[0044] The sheet for an aerosol-generating article according to one embodiment of the present disclosure may have excellent stability and processability by including a specific type of moisture-regulating agent.Active Material

[0045] According to one embodiment of the present disclosure, the sheet for an aerosol-generating article includes an active material. Specifically, the sheet for an aerosol-generating article includes an active material for delivering nicotine or a nicotine salt to a user.

[0046] In the present specification, the "active material" may include at least one of an alkaloid compound and a cannabinoid compound, which is delivered to a user when the aerosol-generating article is heated in an aerosol-generating device. Specifically, the active material may include at least one of nicotine, a nicotine derivative, a nicotine salt, cannabidiol (CBD), and tetrahydrocannabinol (THC). In this case, when nicotine and an organic acid are combined, the pH of nicotine may be lowered, so that nicotine may be delivered to a user in the form of a nicotine salt with a high human absorption rate.

[0047] According to one embodiment of the present disclosure, the content of the active material may be 0.1 parts by weight or more and 8 parts by weight or less, 0.5 parts by weight or more and 7 parts by weight or less, 0.9 parts by weight or more and 6 parts by weight or less, 0.9 parts by weight or more and 5 parts by weight or less, 0.9 parts by weight or more and 4 parts by weight or less, or 0.9 parts by weight or more and 3 parts by weight or less, based on 100 parts by weight of the sheet for an aerosol-generating article. In addition, the content of the active material may be 0.1 wt% or more and 8 wt% or less, 0.5 wt% or more and 7 wt% or less, 0.9 wt% or more and 6 wt% or less, 0.9 wt% or more and 5 wt% or less, 0.9 wt% or more and 4 wt% or less, or 0.9 wt% or more and 3 wt% or less, based on the total weight of the sheet for an aerosol-generating article. When the content of the active material is adjusted within the above range, the active material may be sufficiently delivered to the user's mouth, thereby sufficiently achieving a sense of smoking satisfaction.

[0048] According to one embodiment of the present disclosure, the content of the nicotine may be 0.1 parts by weight or more and 3 parts by weight or less, 0.5 parts by weight or more and 2 parts by weight or less, 0.9 parts by weight or more and 2 parts by weight or less, or 0.9 parts by weight or more and 1.5 parts by weight or less, based on 100 parts by weight of the sheet for an aerosol-generating article. In addition, the content of the nicotine may be 0.1 wt% or more and 3 wt% or less, 0.5 wt% or more and 2 wt% or less, 0.9 wt% or more and 2 wt% or less, or 0.9 wt% or more and 1.5 wt% or less, based on the total weight of the sheet for an aerosol-generating article. When the content of the nicotine is adjusted within the above range, the nicotine or a nicotine salt may be sufficiently delivered to the user's mouth, thereby effectively providing the user with a satisfying taste and excellent smoking properties.

[0049] According to one embodiment of the present disclosure, the content of the organic acid may be 0.1 parts by weight or more and 5 parts by weight or less, 0.5 parts by weight or more and 4 parts by weight or less, 0.9 parts by weight or more and 3 parts by weight or less, or 0.9 parts by weight or more and 2 parts by weight or less, based on 100 parts by weight of the sheet for an aerosol-generating article. In addition, the content of the organic acid may be 0.1 wt% or more and 5 wt% or less, 0.5 wt% or more and 4 wt% or less, 0.9 wt% or more and 3 wt% or less, or 0.9 wt% or more and 2 wt% or less, based on the total weight of the sheet for an aerosol-generating article. According to one embodiment of the present disclosure, when the content of the organic acid is adjusted within the above range, the pH of nicotine may be sufficiently lowered, thereby effectively delivering the nicotine salt in a salt state to the user's mouth.

[0050] According to one embodiment of the present disclosure, the organic acid may include at least one selected from the group consisting of citric acid, benzoic acid, lactic acid, salicylic acid, lauric acid, sorbic acid, levulinic acid, pyruvic acid, formic acid, acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, caprylic acid, capric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, phenylacetic acid, tartaric acid, succinic acid, fumaric acid, gluconic acid, malonic acid, and malic acid; or a hydrate thereof. Specifically, the organic acid may include citric acid and citric acid hydrate, and more specifically, the organic acid may include citric acid monohydrate. According to one embodiment of the present disclosure, when citric acid or citric acid monohydrate is used as the organic acid, the pH of nicotine may be lowered, thereby further increasing the human absorption rate.

[0051] The above-described organic acid hydrate may be act as one of the factors affecting the moisture content of the sheet for an aerosol-generating article. By using the above-described organic acid hydrate, it is possible to implement a sheet for an aerosol-generating article, which not only may minimize the heat felt by the user, but also has excellent mechanical properties so as not to tear during winding.Aerosol-Generating Material

[0052] In this specification, the term "aerosol" may be defined as meaning a suspension of fine solid particles or liquid droplets in air or another gas.

[0053] According to one embodiment of the present disclosure, the sheet for an aerosol-generating article includes an aerosol-generating material that generates an aerosol when the aerosol-generating article inserted into an aerosol-generating device is heated. In addition, the aerosol-generating material may not only generate an aerosol but also acts as one of the factors regulating the moisture content of the sheet for an aerosol-generating article, thereby simultaneously affecting the heat felt by the user when smoking and the ease of winding of the sheet for an aerosol-generating article.

[0054] According to one embodiment of the present disclosure, the content of the aerosol-generating material may be 5 parts by weight or more and 50 parts by weight or less, 8 parts by weight or more and 47 parts by weight or less, 10 parts by weight or more and 45 parts by weight or less, 12 parts by weight or more and 40 parts by weight or less, 14 parts by weight or more and 38 parts by weight or less, or 15 parts by weight or more and 35 parts by weight or less, based on 100 parts by weight of the sheet for an aerosol-generating article. Specifically, the content of the aerosol-generating material may be 20 parts by weight or more and 30 parts by weight or less, 23 parts by weight or more and 25 parts by weight or less, or 27 parts by weight or more and 30 parts by weight or less, based on 100 parts by weight of the sheet for an aerosol-generating article. In addition, the content of the aerosol-generating material may be 5 wt% or more and 50 wt% or less, 8 wt% or more and 47 wt% or less, 10 wt% or more and 45 wt% or less, 12 wt% or more and 40 wt% or less, 14 wt% or more and 38 wt% or less, or 15 wt% or more and 35 wt% or less, based on the total weight of the sheet for an aerosol-generating article. Specifically, the content of the aerosol-generating material may be 20 wt% or more and 30 wt% or less, 23 wt% or more and 25 wt% or less, or 27 wt% or more and 30 wt% or less, based on the total weight of the sheet for an aerosol-generating article. When the content of the aerosol-generating material is adjusted within the above range, an aerosol may be sufficiently generated when the sheet for an aerosol-generating article is heated, thereby promoting the delivery of the active material.

[0055] For example, the aerosol-generating material may include at least one selected from the group consisting of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol, and specifically, may include glycerin.Support

[0056] According to one embodiment of the present disclosure, the sheet for an aerosol-generating article includes a support. The support may be a component forming the framework of the sheet for an aerosol-generating article.

[0057] In this specification, the term "water-insoluble" may mean that the amount of solute that dissolves in 100 g of water at 20°C is 10 g or less, 5 g or less, 1 g or less, 0.1 g or less, 0.01 g or less, 0.001 g or less, 0.0001 g or less, or 0 g. The water-insoluble porous material described below may have a solubility in water within the above range.

[0058] According to one embodiment of the present disclosure, the support may include a water-insoluble porous material. The water-insoluble porous material may reversibly adsorb the active material, the aerosol-generating material, etc. That is, the water-insoluble porous material may minimize volatilization of components such as the active material, the aerosol-generating material, and the additive from the sheet for an aerosol-generating article during storage of the sheet for an aerosol-generating article. In addition, when the sheet for an aerosol-generating article is heated, components such as the active material, aerosol-generating material, and additive adsorbed to the water-insoluble porous material may be desorbed from the water-insoluble porous material to form an aerosol.

[0059] According to one embodiment of the present disclosure, the water-insoluble porous material may be, without limitation, any material used in the art that is capable of reversibly adsorbing components such as the active material and the aerosol-generating material. For example, the water-insoluble porous material may include at least one of a cellulose-based material and a cellulose derivative material. For example, the cellulose-based material may mean a polysaccharide having a lattice structure of overlapping linear chains of D-glucose units linked by β-glycosidic bonds. The cellulose derivative material may mean a material which includes a cellulose-based material as a parent, but to which at least one of introduction of a functional group, oxidation, reduction, and substitution of atoms has been applied. For example, the cellulose derivative material may be esterified cellulose or etherified cellulose. Specifically, the water-insoluble porous material may include microcrystalline cellulose (MCC), but the type of water-insoluble porous material is not limited thereto.

[0060] According to one embodiment of the present disclosure, the content of the support may be 20 parts by weight or more and 80 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article. Specifically, the content of the support may be 30 parts by weight or more and 70 parts by weight or less, 40 parts by weight or more and 60 parts by weight or less, 40 parts by weight or more and 50 parts by weight or less, 30 parts by weight or more and 50 parts by weight or less, or 50 parts by weight or more and 80 parts by weight or less, based on 100 parts by weight of the sheet for an aerosol-generating article. In addition, the content of the support may be 20 wt% or more and 80 wt% or less, 30 wt% or more and 70 wt% or less, 40 wt% or more and 60 wt% or less, 40 wt% or more and 50 wt% or less, 30 wt% or more and 50 wt% or less, or 50 wt% or more and 80 wt% or less, based on the total weight of the sheet for an aerosol-generating article. When the content of the support is within the above-described range, the mechanical properties of the sheet for an aerosol-generating article may be ensured and at the same time, volatilization of the active material, the aerosol-generating material, etc. may be minimized, and the strength and durability of the sheet for an aerosol-generating article may be effectively improved. In addition, when the content of the support is adjusted within the above-described range, an aerosol may be effectively generated when the sheet for an aerosol-generating article is heated.Moisture-Regulating Agent

[0061] According to one embodiment of the present disclosure, the sheet for an aerosol-generating article includes a moisture-regulating agent. Specifically, the moisture-regulating agent includes a compound represented by Formula 1 below:

[0062] In Formula 1 above, R 1 is hydrogen or a hydroxyl group, and R 2 to R 4 are each independently a carboxyl group (-CO 2 H); R 11 is a linear or branched alkyl group having 1 to 3 carbon atoms, and R 12 is a linear or branched alkyl group having 3 to 12 carbon atoms. Specifically, the carbon number of the alkyl group of R 11 may be 1 to 2, or 2 to 3, and the carbon number of the alkyl group of R 12 may be 5 to 10, 7 to 10, 3 to 10, 5 to 9, 7 to 12, or 7 to 9. In the Formula, "*" indicates a bonding position.

[0063] By using a moisture-regulating agent including the compound represented by Formula 1, the storage stability and processability of the sheet for an aerosol-generating article may be improved. Specifically, as the sheet for an aerosol-generating article includes the moisture-regulating agent, the moisture absorption-preventing properties of the sheet for an aerosol-generating article may be improved. Thereby, the sheet for an aerosol-generating article may have excellent long-term storage reliability, and may be effectively suppressed from being deformed or damaged when the sheet is stored under humid conditions.

[0064] According to one embodiment of the present disclosure, at least two of R 2 to R 4 may be the same. When a moisture-regulating agent including the compound represented by Formula 1 in which at least two of R 2 to R 4 are the same is used, the storage stability and processability of the sheet for an aerosol-generating article may be effectively improved.

[0065] According to one embodiment of the present disclosure, the moisture-regulating agent may include a compound represented by Formula 1-1 below.

[0066] In Formula 1-1 above, R 1 is a hydroxyl group, R 21 to R 23 are each independently hydrogen; or a linear or branched alkyl group having 1 to 3 carbon atoms; and at least one of R 21 to R 23 is a linear or branched alkyl group having 1 to 3 carbon atoms. Specifically, the carbon atoms of the alkyl groups of R 21 to R 23 may each independently be 1 to 2, or 2 to 3. In addition, at least two of R 21 to R 23 may each independently be a linear or branched alkyl group having 1 to 3 carbon atoms. In addition, when R 21 to R 23 are each independently the alkyl group, they may be the same as each other.

[0067] By using the moisture-regulating agent including the compound represented by Formula 1-1, the moisture absorption-preventing properties of the sheet for an aerosol-generating article may be improved, and the content of moisture in the sheet for an aerosol-generating article may be easily regulated. In addition, when a moisture-regulating agent including the compound represented by Formula 1-1 is used, it is possible to implement a sheet for an aerosol-generating article having excellent long-term storage reliability.

[0068] According to one embodiment of the present disclosure, the moisture-regulating agent may include a compound represented by Formula 1-2 below.

[0069] In Formula 1-2 above, R 31 to R 33 are each independently a linear or branched alkyl group having 3 to 12 carbon atoms. Specifically, the carbon atoms of the alkyl groups of R 31 to R 33 may each independently be 5 to 10, 7 to 10, 3 to 10, 5 to 9, 7 to 12, or 7 to 9. In addition, at least two of R 31 to R 33 may be the same. In addition, the carbon number of the alkyl group of R 33 may be greater than the carbon numbers of the alkyl groups of R 31 and R 32 . When a moisture-regulating agent including the compound represented by Formula 1-2 is used, the storage stability and processability of the sheet for an aerosol-generating article may be effectively improved.

[0070] According to one embodiment of the present disclosure, the content of the moisture-regulating agent may be 0.1 parts by weight or more and 5 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article. Specifically, the content of the moisture-regulating agent may be 0.5 parts by weight or more and 4.5 parts by weight or less, 1.5 parts by weight or more and 3.5 parts by weight or less, 0.5 parts by weight or more and 3 parts by weight or less, 2.5 parts by weight or more and 5 parts by weight or less, or 1 part by weight or more and 1.5 parts by weight or less, based on 100 parts by weight of the sheet for an aerosol-generating article. In addition, the content of the moisture-regulating agent may be 0.1 wt% or more and 5 wt% or less, 0.5 wt% or more and 4.5 wt% or less, 1.5 wt% or more and 3.5 wt% or less, 0.5 wt% or more and 3 wt% or less, 2.5 wt% or more and 5 wt% or less, or 1 wt% or more and 1.5 wt% or less, based on the total weight of the sheet for an aerosol-generating article. When the content of the moisture-regulating agent is within the above-described range, the moisture absorption-preventing properties of the sheet for an aerosol-generating article may be improved, and the content of moisture in the sheet for an aerosol-generating article may be easily regulated. In addition, by adjusting the content of the moisture-regulating agent within the above-described range, it is possible to further improve the long-term storage reliability of the sheet for an aerosol-generating article, and it is possible to effectively suppress the sheet from being deformed or damaged when stored under humid conditions.

[0071] According to one embodiment of the present disclosure, the weight ratio between the moisture-regulating agent and the aerosol-generating material may be in a range of 1:3 to 1:100. Specifically, the weight ratio between the moisture-regulating agent and the aerosol-generating material may be in a range of 1:5 to 1:80, 1:10 to 1:50, 1:20 to 1:30, 1:3 to 1:50, or 1:10 to 1:30. When the weight ratio between the moisture-regulating agent and the aerosol-generating material included in the sheet for an aerosol-generating article is within the above-described range, the moisture absorption-preventing properties of the sheet for an aerosol-generating article may be improved and at the same time, an aerosol may be smoothly formed when the sheet is heated, thereby implementing rich smoking properties.Filler

[0072] According to one embodiment of the present disclosure, the sheet for an aerosol-generating article may includes a filler. The filler may function to reinforce mechanical properties such as strength and durability of the sheet for an aerosol-generating article.

[0073] According to one embodiment of the present disclosure, the filler may be a non-tobacco material. Specifically, the filler may include at least one of a cellulose-based material and a cellulose derivative material. For example, the cellulose-based material may mean a polysaccharide having a lattice structure of overlapping linear chains of D-glucose units linked by β-glycosidic bonds. The cellulose derivative material may mean a material which includes a cellulose-based material as a parent, but to which at least one of introduction of a functional group, oxidation, reduction, and substitution of atoms has been applied. For example, the cellulose derivative material may be esterified cellulose or etherified cellulose. For example, the filler may include at least one of wood fibers, wheat fibers, and pulp (e.g., wood pulp). By using the above-described type of filler, it is possible to effectively reinforce the mechanical properties of the sheet for an aerosol-generating article.

[0074] According to one embodiment of the present disclosure, the content of the filler may be 3 parts by weight or more and 8 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article. Specifically, the content of the filler may be 4 parts by weight or more and 7 parts by weight or less, 3 parts by weight or more and 4 parts by weight or less, or 5 parts by weight or more and 7 parts by weight or less, based on 100 parts by weight of the sheet for an aerosol-generating article. In addition, the content of the filler may be 3 wt% or more and 8 wt% or less, 4 wt% or more and 7 wt% or less, 3 wt% or more and 4 wt% or less, or 5 wt% or more and 7 wt% or less, based on the total weight of the sheet for an aerosol-generating article. When the content of the filler is within the above-described range, the filler may effectively improve the strength and durability of the sheet for an aerosol-generating article.Binder

[0075] According to one embodiment of the present disclosure, the sheet for an aerosol-generating article may include a binder material. The binder may function to allow components to stably exist in the sheet for an aerosol-generating article.

[0076] According to one embodiment of the present disclosure, the binder may include a binder material that provides a polymer matrix that is flexible and may form a sheet shape. Specifically, the binder material may include at least one of a cellulose-based polymer, guar gum, xanthan gum, gum arabic, agar, pectin, and alginate.

[0077] According to one embodiment of the present disclosure, the cellulose-based polymer may include, for example, at least one of carboxymethyl cellulose (CMC), carboxyethyl cellulose (CEC), methyl cellulose (MC), ethyl cellulose (EC), hydroxymethyl cellulose, hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), hydroxyethyl methylcellulose (HEMC), and hydroxypropyl methylcellulose (HPMC).

[0078] According to one embodiment of the present disclosure, the weight-average molecular weight of the binder material may be 10,000 g / mol or more and 2,000,000 g / mol or less. Specifically, the weight-average molecular weight of the binder material may be 20,000 g / mol or more and 1,800,000 g / mol or less, 30,000 g / mol or more and 1,600,000 g / mol or less, 100,000 g / mol or more and 1,500,000 g / mol or less, 200,000 g / mol or more and 700,000 g / mol or less, 10,000 g / mol or more and 700,000 g / mol or less, 20,000 g / mol or more and 500,000 g / mol or less, 30,000 g / mol or more and 200,000 g / mol or less, 20,000 g / mol or more and 100,000 g / mol or less, 10,000 g / mol or more and 30,000 g / mol or less, 30,000 g / mol or more and 700,000 g / mol or less, 1,000,000 g / mol or more and 2,000,000 g / mol or less, 1,200,000 g / mol or more and 1,800,000 g / mol or less, 1,400,000 g / mol or more and 1,600,000 g / mol or less, 1,000,000 g / mol or more and 1,500,000 g / mol or less, or 1,500,000 g / mol or more and 2,000,000 g / mol or less.

[0079] When the weight-average molecular weight of the binder material is within the above-described range, the active material, the aerosol-generating material, etc. may stably exist in the sheet for an aerosol-generating article. Thereby, the smoking properties of the sheet for an aerosol-generating article may be further improved.

[0080] According to one embodiment of the present disclosure, the weight-average molecular weight of the cellulose-based polymer as the binder material may be 10,000 g / mol or more and 700,000 g / mol or less. Specifically, the weight-average molecular weight of the cellulose-based polymer as the binder material may be 20,000 g / mol or more and 500,000 g / mol or less, 30,000 g / mol or more and 200,000 g / mol or less, 20,000 g / mol or more and 100,000 g / mol or less, 10,000 g / mol or more and 30,000 g / mol or less, or 30,000 g / mol or more and 700,000 g / mol or less. In addition, the weight-average molecular weight of guar gum as the binder material may be 1,000,000 g / mol or more and 2,000,000 g / mol or less. Specifically, the weight-average molecular weight of guar gum as the binder material may be 1,200,000 g / mol or more and 1,800,000 g / mol or less, 1,400,000 g / mol or more and 1,600,000 g / mol or less, 1,000,000 g / mol or more and 1,500,000 g / mol or less, or 1,500,000 g / mol or more and 2,000,000 g / mol or less.

[0081] According to one embodiment of the present disclosure, the content of the binder may be 3 parts by weight or more and 15 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article. Specifically, the content of the binder may be 4 parts by weight or more and 12 parts by weight or less, 5 parts by weight or more and 10 parts by weight or less, 3 parts by weight or more and 8 parts by weight or less, or 4 parts by weight or more and 15 parts by weight or less, based on 100 parts by weight of the sheet for an aerosol-generating article. In addition, the content of the binder may be 3 wt% or more and 15 wt% or less, 4 wt% or more and 12 wt% or less, 5 wt% or more and 10 wt% or less, 3 wt% or more and 8 wt% or less, or 4 wt% or more and 15 wt% or less, based on the total weight of the sheet for an aerosol-generating article. When the content of the binder is within the above-described range, the mechanical properties of the sheet for an aerosol-generating article may be ensured and at the same time, the active material, the aerosol-generating material, the flavoring agent, etc. may be stably retained within the sheet for an aerosol-generating article.Bulking Agent

[0082] According to one embodiment of the present disclosure, the sheet for an aerosol-generating article may include a bulking agent. The bulking agent may function to increase the total mass of components other than water in a composition for forming the sheet for an aerosol-generating article, thereby increasing the volume of the sheet for an aerosol-generating article. In addition, the bulking agent may not substantially increase the viscosity of a composition for forming the sheet for an aerosol-generating article.

[0083] According to one embodiment of the present disclosure, the bulking agent may include at least one of starch and a starch hydrolysate. The term "starch hydrolysate" may mean a material obtained by a process including a process of hydrolyzing starch. The starch hydrolysate may be, for example, a material obtained by directly hydrolyzing starch (i.e., dextrin) or a material obtained by hydrolyzing starch after heat treatment (i.e., indigestible dextrin). For example, the bulking agent may include dextrin. Specifically, the bulking agent may include at least one of cyclodextrin and maltodextrin. However, the type of dextrin is not limited thereto.

[0084] According to one embodiment of the present disclosure, the bulking agent may include a starch hydrolysate having a DE value of 1 or more and 20 or less. For example, the DE value of the starch hydrolysate may be 2 or more and 18 or less, 3 or more and 15 or less, 5 or more and 10 or less, 10 or more and 20 or less, 12 or more and 18 or less, 1 or more and 5 or less, or 1 or more and 10 or less. Specifically, the starch hydrolysate may include at least one of dextrin having a DE value of 1 or more and 5 or less and indigestible dextrin having a DE value of 10 or more and 20 or less. More specifically, the bulking agent may include the dextrin as the starch hydrolysate. By using the bulking agent including the starch hydrolysate having the above-described DE value, it is possible to prevent the sheet for an aerosol-generating article from shrinking during the manufacturing process and storage of the sheet for an aerosol-generating article. Thereby, it is possible to improve processability during the manufacturing of the sheet for an aerosol-generating article, and to improve the storage stability of the sheet.

[0085] DE is an abbreviation for dextrose equivalent, and the DE value is a value indicating the degree of hydrolysis of starch, that is, the saccharification rate of starch. In the present disclosure, the DE value is a value measured by the Willstatter-Schudel method. The DE value is measured as a specific numerical value by the Willstatter-Schudel method. The characteristics of hydrolyzed starch (starch hydrolysate), such as the molecular weight of the starch hydrolysate or the arrangement of sugar molecules constituting the starch hydrolysate, may not be constant for each molecule of the starch hydrolysate, but may exist with a certain distribution or variation. Due to the distribution or variation of the characteristics of the starch hydrolysate, or the difference in cut sections, the starch hydrolysate exhibits different physical properties (e.g., DE value) for each molecule. In this way, the starch hydrolysate is a set of molecules exhibiting different physical properties, but the measurement result (i.e., DE value) by the Willstatter-Schudel method is considered as a representative value indicating the degree of hydrolysis of starch.

[0086] According to one embodiment of the present, the content of the bulking agent may be 1 part by weight or more and 20 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article. Specifically, the content of the bulking agent may be 2 parts by weight or more and 15 parts by weight or less, 5 parts by weight or more and 10 parts by weight or less, 8 parts by weight or more and 20 parts by weight or less, 8 parts by weight or more and 15 parts by weight or less, 1 part by weight or more and 10 parts by weight or less, or 5 parts by weight or more and 20 parts by weight or less, based on 100 parts by weight of the sheet for an aerosol-generating article. In addition, the content of the bulking agent may be 1 wt% or more and 20 wt% or less, 2 wt% or more and 15 wt% or less, 5 wt% or more and 10 wt% or less, 8 wt% or more and 20 wt% or less, 8 wt% or more and 15 wt% or less, 1 wt% or more and 10 wt% or less, or 5 wt% or more and 20 wt% or less, based on the total weight of the sheet for an aerosol-generating article. When the content of the bulking agent is within the above-described range, it is possible to effectively prevent the sheet for an aerosol-generating article from shrinking during the manufacturing process and storage of the sheet for an aerosol-generating article. In addition, by adjusting the content of the bulking agent within the above-described range, it is possible to extend the flavor retention period of the sheet for an aerosol-generating article, and to improve the water solubility, thermal stability, and oxidation resistance of flavor components.

[0087] According to one embodiment of the present disclosure, when the binder includes a binder material having a weight-average molecular weight of 250,000 g / mol or more and 2,000,000 g / mol or less, the content of the bulking agent may be 1 part by weight or more and 20 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article. In addition, when the binder includes a binder material having a weight-average molecular weight of 250,000 g / mol or more and 2,000,000 g / mol or less, the content of the bulking agent may be 1 wt% or more and 20 wt% or less based on the total weight of the sheet for an aerosol-generating article.

[0088] According to one embodiment of the present disclosure, when the binder includes a binder material having a weight-average molecular weight of 1,000,000 g / mol or more and 2,000,000 g / mol or less, the content of the bulking agent may be 8 parts by weight or more and 20 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article. Specifically, when the binder includes, as a binder material, guar gum having a weight-average molecular weight of 1,000,000 g / mol or more and 2,000,000 g / mol or less, the content of the bulking agent may be 9 parts by weight or more and 17 parts by weight or less, 10 parts by weight or more and 15 parts by weight or less, 8 parts by weight or more and 10 parts by weight or less, 9 parts by weight or more and 12 parts by weight or less, or 8 parts by weight or more and 15 parts by weight or less, based on 100 parts by weight of the sheet for an aerosol-generating article. In addition, when the binder includes, as a binder material, guar gum having a weight-average molecular weight of 1,000,000 g / mol or more and 2,000,000 g / mol or less, the content of the bulking agent may be 8 wt% or more and 20 wt% or less, 9 wt% or more and 17 wt% or less, 10 wt% or more and 15 wt% or less, 8 wt% or more and 10 wt% or less, 9 wt% or more and 12 wt% or less, or 8 wt% or more and 15 wt% or less, based on the total weight of the sheet for an aerosol-generating article. In this case, a bulking agent including dextrin having a DE value of 1 or more and 5 or less may be used.

[0089] When a binder material having the above-described weight-average molecular weight is used, the sheet for an aerosol-generating article may greatly tend to shrink during the manufacturing process and storage of the sheet for an aerosol-generating article. Accordingly, by adjusting the content of the bulking agent within the above-described range, it is possible to effectively suppress the problem that the sheet shrinks during the manufacturing process and storage of the sheet for an aerosol-generating article.

[0090] According to one embodiment of the present disclosure, when the binder includes a binder material having a weight-average molecular weight of 250,000 g / mol or more and 700,000 g / mol or less, the content of the bulking agent may be 1 part by weight or more and less than 8 parts by weight based on 100 parts by weight of the sheet for an aerosol-generating article. Specifically, when the binder includes, as a binder material, a cellulose-based polymer having a weight-average molecular weight of 250,000 g / mol or more and 700,000 g / mol or less, the content of the bulking agent may be 1 part by weight or more and less than 8 parts by weight, 2 parts by weight or more and 6 parts by weight or less, 3 parts by weight or more and 5 parts by weight or less, or 1 part by weight or more and 5 parts by weight or less, based on 100 parts by weight of the sheet for an aerosol-generating article. In addition, when the binder includes, as a binder material, guar gum having a weight-average molecular weight of 250,000 g / mol or more and 700,000 g / mol or less, the content of the bulking agent may be 1 wt% or more and less than 8 wt%, 2 wt% or more and 6 wt% or less, 3 wt% or more and 5 wt% or less, or 1 wt% or more and 5 wt% or less, based on the total weight of the sheet for an aerosol-generating article. In this case, a bulking agent including dextrin having a DE value of 1 or more and 5 or less may be used, thereby achieving excellent moisture absorption characteristics.

[0091] According to one embodiment of the present disclosure, when the binder includes a binder material having a weight-average molecular weight of 10,000 g / mol or more and 50,000 g / mol or less, the content of the bulking agent may be 0 parts by weight or more and less than 1.0 part by weight, 0 part by weight or more and 0.9 part by weight or less, 0 part by weight or more and 0.8 part by weight or less, 0 part by weight or more and 0.7 part by weight or less, 0 part by weight or more and 0.6 part by weight or less, 0 part by weight or more and 0.5 part by weight or less, 0 part by weight or more and 0.4 part by weight or less, 0 part by weight or more and 0.3 part by weight or less, 0 part by weight or more and 0.2 part by weight or less, or 0 part by weight or more and 0.1 part by weight or less, based on 100 parts by weight of the sheet for an aerosol-generating article. In addition, when the binder includes a binder material having a weight-average molecular weight of 10,000 g / mol or more and 50,000 g / mol or less, the content of the bulking agent may be 0 wt% or more and 1.0 wt% or less, 0 wt% or more and 0.9 wt% or less, 0 wt% or more and 0.8 wt% or less, 0 wt% or more and 0.7 wt% or less, 0 wt% or more and 0.6 wt% or less, 0 wt% or more and 0.5 wt% or less, 0 wt% or more and 0.4 wt% or less, 0 wt% or more and 0.3 wt% or less, 0 wt% or more and 0.2 wt% or less, or 0 wt% or more and 0.1 wt% or less, based on the total weight of the sheet for an aerosol-generating article. Specifically, when the binder includes a binder material having a weight-average molecular weight of 10,000 g / mol or more and 50,000 g / mol or less, the sheet for an aerosol-generating article may not include a bulking agent. More specifically, when the binder includes, as a binder material, a cellulose-based polymer having a weight-average molecular weight of 10,000 g / mol or more and 50,000 g / mol or less, the sheet for an aerosol-generating article may not include a bulking agent.

[0092] When the binder material having the above-described weight-average molecular weight is used, the sheet for an aerosol-generating article may less tend to shrink during the manufacturing process and storage of the sheet. Accordingly, by adjusting the content of the bulking agent within the above-described range, it is possible to suppress shrinkage of the sheet during the manufacturing process and storage of the sheet for an aerosol-generating article, while inducing the sheet for an aerosol-generating article to have an appropriate level of volume. Thereby, it is possible to improve the smoking properties of the sheet for an aerosol-generating article.

[0093] That is, according to one embodiment of the present disclosure, by adjusting the content of the bulking agent in consideration of the weight-average molecular weight of the binder material included in the sheet for an aerosol-generating article, it is possible to effectively suppress the shrinkage of the sheet for an aerosol-generating article while improving the smoking properties.Additive

[0094] According to one embodiment of the present disclosure, the sheet for an aerosol-generating article may include an additive. Specifically, the additive may include at least one of an emulsifier, a flavoring agent, an extract, and a vitamin component. The additive may be included in a solid form, such as a powder form, a granulated form, or a sheet form. In addition, the additive may be included in a semi-solid form, such as a gel form, or a paste form. In addition, the additive may be included in a liquid form, such as an oil form, or a dispersion form. In addition, depending on the type of additive, the additive may be included in the form of an extract.

[0095] According to one embodiment of the present disclosure, the emulsifier may increase the fragrance retention of the sheet for an aerosol-generating article by allowing a highly fat-soluble fragrance and a water-soluble polysaccharide substance to be well mixed. Lecithin may be mentioned as an example of the emulsifier, but the type of emulsifier is not limited.

[0096] According to one embodiment of the present disclosure, examples of the flavoring agent include menthol, terpene, terpenoid, eugenol, eucalyptol, cognac, natural vegetable flavoring agents (e.g., cinnamon, sage, herb, chamomile, rosemary, kudzu, amacha, clove, lavender, cardamom, Eugenia caryophyllus, nutmeg, bergamot, geranium, rose oil, lemon, orange, cassia bark, caraway, jasmine, ginger, cilantro, coriander, spearmint, peppermint, cassia, coffee, celery, cascarilla, sandalwood, ylang-ylang, fennel, anise, licorice, Saint John's bread, etc.), saccharides (e.g., glucose, fructose, isomerized sugar, caramel, etc.), esters (e.g., isoamyl acetate, linalyl acetate, isoamyl propionate, and linalyl butyrate), ketones (e.g., menthone, ionone, damascenones, ethyl maltol, etc.), alcohols (e.g., geraniol, linalool, anethole, eugenol, etc.), aldehydes (e.g., vanillin, benzaldehyde, and anisaldehyde), lactones (e.g., γ-undecalactone, γ-nonalactone, etc.), animal flavoring agents (e.g., musk, ambergris, civet, castoreum, etc.), and hydrocarbons (e.g., limonene, pinene, etc.). The flavoring agent may be used in a solid form, or may be used dissolved or dispersed in an appropriate solvent, such as propylene glycol, ethyl alcohol, benzyl alcohol, or triethyl citrate. In addition, a flavoring agent that is easily dispersed in a solvent by adding an emulsifier, such as a hydrophobic flavoring agent or an oil-soluble flavoring agent, may be used. These flavoring agents may be used alone or in combination. However, the type of flavoring agent is not limited.

[0097] For example, the form of the flavoring agent is not particularly limited and may be a solid form, a semi-solid form, a solution, or a suspension. For example, the solid form may include at least one of a powder and a granule, and the semi-solid may include at least one of a gel and a paste. For example, if the flavoring agent is a herb powder, the herb powder may be prepared by washing and drying at least one selected from the group consisting of peppermint, rosemary, lavender, rooibos, lemongrass, lemon balm, earl grey, mint, chamomile, coriander, and mugwort, followed by grinding. In addition, depending on the type of material used as the flavoring agent, an extract may be included in a solid, semi-solid, or liquid form.

[0098] According to one embodiment of the present disclosure, the extract may include at least one of a vanilla extract, a natural fruit extract, a cocoa extract, a honey extract, a flower extract, and an herb extract, but the type of extract is not limited.

[0099] According to one embodiment of the present disclosure, the vitamin component may include at least one of vitamin A, vitamin B, vitamin C, and vitamin E, but the type of vitamin component is not limited.

[0100] According to one embodiment of the present disclosure, the content of the additive may be 0.1 parts by weight or more and 15 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article. Specifically, the content of the additive may be 0.5 parts by weight or more and 12 parts by weight or less, 1 part by weight or more and 7 parts by weight or less, 0.1 parts by weight or more and 5 parts by weight or less, or 3 parts by weight or more and 15 parts by weight or less, based on 100 parts by weight of the sheet for an aerosol-generating article. In addition, the content of the additive may be 0.1 wt% or more and 15 wt% or less, 0.5 wt% or more and 12 wt% or less, 1 wt% or more and 7 wt% or less, 0.1 wt% or more and 5 wt% or less, or 3 wt% or more and 15 wt% or less, based on the total weight of the sheet for an aerosol-generating article. When the content of the additive is within the above-described range, it is possible to provide the persistence of the fragrance and / or taste delivered from the sheet for an aerosol-generating article. Meanwhile, the additive may be added at a high concentration, and the intensity of the fragrance and / or flavor may be adjusted depending on the concentration added.Moisture

[0101] According to one embodiment of the present disclosure, the sheet for an aerosol-generating article may include water (moisture) that affects the heat felt by the user of the aerosol-generating article and the mechanical properties of the sheet. Specifically, if the moisture content of the sheet for an aerosol-generating article is high, the ease of winding may be excellent, but a problem may arise in that the amount of vaporized water vapor increases, which increases the intensity of the heat felt by the user. On the other hand, if the moisture content of the sheet for an aerosol-generating article is low, the amount of vaporized water vapor is reduced, which reduces the intensity of the heat, but a problem may arise in that deterioration of the mechanical properties such as tearing when the sheet is wound occurs. In other words, the heat performance and the mechanical properties are in a trade-off relationship where one performance increases while the other decreases.

[0102] According to one embodiment of the present disclosure, the moisture content of the sheet for an aerosol-generating article may be 3 parts by weight or more and 15 parts by weight or less, 5 parts by weight or more and 8 parts by weight or less, 5 parts by weight or more and 12 parts by weight or less, 4 parts by weight or more and 12 parts by weight or less, 4.2 parts by weight or more and 8 parts by weight or less, 5 parts by weight or more and 8 parts by weight or less, or 6 parts by weight or more and 7 parts by weight or less, based on 100 parts by weight of the sheet for an aerosol-generating article. In addition, the moisture content may be 3 wt% or more and 15 wt% or less, 5 wt% or more and 8 wt% or less, 5 wt% or more and 12 wt% or less, 4 wt% or more and 12 wt% or less, 4.2 wt% or more and 8 wt% or less, 5 wt% or more and 8 wt% or less, or 6 wt% or more and 7 wt% or less, based on the total weight of the sheet for an aerosol-generating article. For example, the moisture content of the sheet for an aerosol-generating article may be measured under the conditions of temperature of 22.5°C and relative humidity of 40%. According to one embodiment of the present disclosure, the moisture content of the sheet for an aerosol-generating article may be adjusted within the above range, thereby achieving both performances that are in the trade-off relationship. That is, according to one embodiment of the present disclosure, it is possible to implement a sheet for an aerosol-generating article having excellent mechanical properties while minimizing the heat felt by the user when smoking.Tobacco Material

[0103] According to one embodiment of the present disclosure, the sheet for an aerosol-generating article may include a very small amount of a tobacco material, or may not include a tobacco material. For example, the sheet for an aerosol-generating article may be a sheet that does not include a tobacco material.

[0104] According to one embodiment of the present disclosure, the content of the tobacco material may be 1.0 part by weight or less, 0.9 part by weight or less, 0.8 part by weight or less, 0.7 part by weight or less, 0.6 part by weight or less, 0.5 part by weight or less, 0.4 part by weight or less, 0.3 part by weight or less, 0.2 part by weight or less, 0.1 part by weight or less, 0.01 part by weight or less, or 0 part by weight, based on 100 parts by weight of the sheet for an aerosol-generating article. For example, the content of the tobacco material in the sheet for an aerosol-generating article may be 0 parts by weight.Composition for Forming Sheet for Aerosol-Generating Article

[0105] According to one embodiment of the present disclosure, the sheet for an aerosol-generating article may be manufactured from a composition for forming a sheet for an aerosol-generating article. Specifically, the sheet for an aerosol-generating article may include a dried product of the composition for forming a sheet for an aerosol-generating article. Therefore, the support, filler, aerosol-generating material, binder, moisture-regulating agent, active material, bulking agent, additive, etc. included in the composition for forming a sheet for an aerosol-generating article according to this embodiment may be the same as the support, filler, aerosol-generating material, binder, moisture-regulating agent, active material, bulking agent, additive, etc. included in the sheet for an aerosol-generating article according to the above-described embodiment.

[0106] Therefore, the description of the same parts as those in the above-described embodiment will be omitted below.

[0107] According to one embodiment of the present disclosure, the composition for forming a sheet for an aerosol-generating article may include a sheet-forming material and a solvent. Specifically, the sheet-forming material may include an active material; an aerosol-generating material; a support; and a moisture-regulating agent including the compound represented by Formula 1. In addition, the sheet-forming material may further include at least one of a filler, a binder, a bulking agent, and an additive. In this case, the sheet-forming material may be defined as including all components excluding a solvent, which are included in the composition for forming a sheet for an aerosol-generating article.

[0108] According to one embodiment of the present disclosure, the drying temperature of the composition for forming a sheet for an aerosol-generating article may be 80°C or more and 150°C or less, 85°C or more and 145°C or less, 90°C or more and 140°C or less, 95°C or more and 135°C or less, 100°C or more and 130°C or less, 105°C or more and 120°C or less, or 105°C or more and 110°C or less.

[0109] According to one embodiment of the present disclosure, the drying time of the composition for forming a sheet for an aerosol-generating article may be 8 minutes or more and 15 minutes or less, 9 minutes or more and 14 minutes or less, 10 minutes or more and 13 minutes or less, 10 minutes or more and 12 minutes or less, or 10 minutes or more and 11 minutes or less, based on a sheet thickness of 200 µm.

[0110] According to one embodiment of the present disclosure, when the drying temperature and drying time of the composition for forming a sheet for an aerosol-generating article are simultaneously controlled within the above ranges, the moisture content in the sheet for an aerosol-generating article may be reduced to an appropriate level, thereby implementing an aerosol-generating article which does not tear during winding, due to its excellent mechanical properties, and has a controlled intensity of the heat.

[0111] According to one embodiment of the present disclosure, the composition for forming a sheet for an aerosol-generating article may include a solvent. The solvent may include a hydrophilic solvent, and specifically, the solvent may include water. The content of the solvent in the composition for forming a sheet for an aerosol-generating article may be 200 parts by weight or more and 1,000 parts or less, 300 parts by weight or more and 750 parts by weight or less, 400 parts by weight or more and 500 parts by weight or less, or 400 parts by weight or more and 1,000 parts by weight or less, based on 100 parts by weight of the sheet-forming material. When the content of the solvent is within the above-described range, the sheet-forming material in the composition for forming a sheet for an aerosol-generating article may be homogeneously mixed, and the processability of the composition for forming a sheet for an aerosol-generating article may be improved.

[0112] According to one embodiment of the present disclosure, the content of the active material in the composition for forming a sheet for an aerosol-generating article may be 0.1 parts by weight or more and 10 parts by weight or less, 0.1 parts by weight or more and 8 parts by weight or less, 0.5 parts by weight or more and 7 parts by weight or less, 1 part by weight or more and 6 parts by weight or less, 1 part by weight or more and 5 parts by weight or less, 2 parts by weight or more and 4 parts by weight or less, or 2 parts by weight or more and 3 parts by weight or less, based on 100 parts by weight of the sheet-forming material. In addition, the content of the active material may be 0.1 wt% or more and 10 wt% or less, 0.1 wt% or more and 8 wt% or less, 0.5 wt% or more and 7 wt% or less, 1 wt% or more and 6 wt% or less, 1 wt% or more and 5 wt% or less, 2 wt% or more and 4 wt% or less, or 2 wt% or more and 3 wt% or less, based on the total weight of the sheet-forming material. When the content of the active material is within the above-described range, it is possible to easily manufacture a sheet for an aerosol-generating article having excellent nicotine delivery ability.

[0113] According to one embodiment of the present disclosure, the content of nicotine in the composition for forming a sheet for an aerosol-generating article may be 0.1 parts by weight or more and 4 parts by weight or less, 0.5 parts by weight or more and 3 parts by weight or less, 0.9 parts by weight or more and 3 parts by weight or less, or 0.9 parts by weight or more and 2.5 parts by weight or less, based on 100 parts by weight of the sheet-forming material. In addition, the content of nicotine may be 0.1 wt% or more and 4 wt% or less, 0.5 wt% or more and 3 wt% or less, 0.9 wt% or more and 3 wt% or less, or 0.9 wt% or more and 2.5 wt% or less, based on the total weight of the sheet-forming material. When the content of nicotine is adjusted within the above range, nicotine or a nicotine salt may be sufficiently delivered to the user's mouth, thereby effectively providing the user with a satisfying taste and excellent smoking properties.

[0114] According to one embodiment of the present disclosure, the content of the organic acid in the composition for forming a sheet for an aerosol-generating article may be 0.1 parts by weight or more and 6 parts by weight or less, 0.5 parts by weight or more and 5 parts by weight or less, 0.9 parts by weight or more and 4 parts by weight or less, or 0.9 parts by weight or more and 3 parts by weight or less, based on 100 parts by weight of the sheet-forming material. In addition, the content of the organic acid may be 0.1 wt% or more and 6 wt% or less, 0.5 wt% or more and 5 wt% or less, 0.9 wt% or more and 4 wt% or less, or 0.9 wt% or more and 3 wt% or less, based on the total weight of the sheet-forming material. According to one embodiment of the present disclosure, when the content of the organic acid is adjusted within the above range, the pH of the nicotine may be sufficiently lowered, so that the nicotine salt in a salt state may be effectively delivered to the user's mouth.

[0115] According to one embodiment of the present disclosure, the content of the aerosol-generating material in the composition for forming a sheet for an aerosol-generating article may be 5 parts by weight or more and 60 parts by weight or less, 5 parts by weight or more and 50 parts by weight or less, 8 parts by weight or more and 47 parts by weight or less, 10 parts by weight or more and 45 parts by weight or less, 12 parts by weight or more and 40 parts by weight or less, 14 parts by weight or more and 38 parts by weight or less, or 15 parts by weight or more and 35 parts by weight or less, based on 100 parts by weight of the sheet-forming material. In addition, the content of the aerosol-generating material may be 5 wt% or more and 60 wt% or less, 5 wt% or more and 50 wt% or less, 8 wt% or more and 47 wt% or less, 10 wt% or more and 45 wt% or less, 12 wt% or more and 40 wt% or less, 14 wt% or more and 38 wt% or less, or 15 wt% or more and 35 wt% or less, based on the total weight of the sheet-forming material. When the content of the aerosol-generating material is within the above-described range, it is possible to easily implement a sheet for an aerosol-generating article capable of generating abundant aerosols when heated.

[0116] According to one embodiment of the present disclosure, the content of the support in the composition for forming a sheet for an aerosol-generating article may be 20 parts by weight or more and 86 parts by weight or less, 20 parts by weight or more and 80 parts by weight or less, 30 parts by weight or more and 70 parts by weight or less, 40 parts by weight or more and 60 parts by weight or less, 30 parts by weight or more and 50 parts by weight or less, or 45 parts by weight or more and 80 parts by weight or less, based on 100 parts by weight of the sheet-forming material. In addition, the content of the support may be 20 wt% or more and 86 wt% or less, 20 wt% or more and 80 wt% or less, 30 wt% or more and 70 wt% or less, 40 wt% or more and 60 wt% or less, 30 wt% or more and 50 wt% or less, or 45 wt% or more and 80 wt% or less, based on the total weight of the sheet-forming material. When the content of the support is within the above-described range, it is possible to easily implement a sheet for an aerosol-generating article having excellent mechanical properties and storage stability.

[0117] According to one embodiment of the present disclosure, the content of the moisture-regulating agent in the composition for forming a sheet for an aerosol-generating article may be 0.1 parts by weight or more and 6 parts by weight or less, 0.1 parts by weight or more and 5 parts by weight or less, 0.5 parts by weight or more and 4.5 parts by weight or less, 1.5 parts by weight or more and 3.5 parts by weight or less, 0.5 parts by weight or more and 3 parts by weight or less, or 1.3 parts by weight or more and 5 parts by weight or less, based on 100 parts by weight of the sheet-forming material. In addition, the content of the moisture-regulating agent may be 0.1 wt% or more and 6 wt% or less, 0.1 wt% or more and 5 wt% or less, 0.5 wt% or more and 4.5 wt% or less, 1.5 wt% or more and 3.5 wt% or less, 0.5 wt% or more and 3 wt% or less, or 1.3 wt% or more and 5 wt% or less, based on the total weight of the sheet-forming material. When the content of the moisture-regulating agent is within the above-described range, it is possible to easily implement a sheet for an aerosol-generating article having excellent moisture absorption-preventing properties and long-term storage reliability.

[0118] According to one embodiment of the present disclosure, the content of the filler in the composition for forming a sheet for an aerosol-generating article may be 3 parts by weight or more and 9 parts by weight or less, 3 parts by weight or more and 7 parts by weight or less, 4 parts by weight or more and 5 parts by weight or less, 3 parts by weight or more and 4 parts by weight or less, or 5 parts by weight or more and 8 parts by weight or less, based on 100 parts by weight of the sheet-forming material. In addition, the content of the filler may be 3 wt% or more and 9 wt% or less, 3 wt% or more and 7 wt% or less, 4 wt% or more and 5 wt% or less, 3 wt% or more and 4 wt% or less, or 5 wt% or more and 8 wt% or less, based on the total weight of the sheet-forming material. When the content of the filler is within the above-described range, it is possible to easily implement a sheet for an aerosol-generating article having improved mechanical properties.

[0119] According to one embodiment of the present disclosure, the content of the binder in the composition for forming a sheet for an aerosol-generating article may be 3 parts by weight or more and 20 parts by weight or less, 3 parts by weight or more and 15 parts by weight or less, 4 parts by weight or more and 12 parts by weight or less, 4 parts by weight or more and 10 parts by weight or less, 3 parts by weight or more and 8 parts by weight or less, or 4 parts by weight or more and 15 parts by weight or less, based on 100 parts by weight of the sheet-forming material. In addition, the content of the binder may be 3 wt% or more and 20 wt% or less, 3 wt% or more and 15 wt% or less, 4 wt% or more and 12 wt% or less, 4 wt% or more and 10 wt% or less, 3 wt% or more and 8 wt% or less, or 4 wt% or more and 15 wt% or less, based on the total weight of the sheet-forming material. When the content of the binder is within the above-described range, the components may be stably retained in the sheet for an aerosol-generating article.

[0120] According to one embodiment of the present disclosure, the content of the bulking agent in the composition for forming a sheet for an aerosol-generating article may be 1 part by weight or more and 25 parts by weight or less, 1 part by weight or more and 20 parts by weight or less, 2 parts by weight or more and 15 parts by weight or less, 5 parts by weight or more and 10 parts by weight or less, 6 parts by weight or more and 10 parts by weight or less, 6 parts by weight or more and 20 parts by weight or less, 8 parts by weight or more and 15 parts by weight or less, 1 part by weight or more and 10 parts by weight or less, or 5 parts by weight or more and 20 parts by weight or less, based on 100 parts by weight of the sheet-forming material. In addition, the content of the bulking agent may be 1 wt% or more and 25 wt% or less, 1 wt% or more and 20 wt% or less, 2 wt% or more and 15 wt% or less, 5 wt% or more and 10 wt% or less, 6 wt% or more and 10 wt% or less, 6 wt% or more and 20 wt% or less, 8 wt% or more and 15 wt% or less, 1 wt% or more and 10 wt% or less, or 5 wt% or more and 20 wt% or less, based on the total weight of the sheet-forming material. When the content of the bulking agent is within the above-described range, it is possible to effectively suppress the sheet for an aerosol-generating article from being shrunk during the manufacturing process and storage of the sheet.

[0121] According to one embodiment of the present disclosure, the content of the additive in the composition for forming a sheet for an aerosol-generating article may be 0.1 parts by weight or more and 18 parts by weight or less, 0.1 parts by weight or more and 15 parts by weight or less, 0.5 parts by weight or more and 12 parts by weight or less, 1 part by weight or more and 7 parts by weight or less, 0.1 parts by weight or more and 5 parts by weight or less, or 3 parts by weight or more and 15 parts by weight or less, based on 100 parts by weight of the sheet-forming material. In addition, the content of the additive may be 0.1 wt% or more and 18 wt% or less, 0.1 wt% or more and 15 wt% or less, 0.5 wt% or more and 12 wt% or less, 1 wt% or more and 7 wt% or less, 0.1 wt% or more and 5 wt% or less, or 3 wt% or more and 15 wt% or less, based on the total weight of the sheet-forming material. When the content of the additive is within the above-described range, it is possible to easily implement a sheet for an aerosol-generating article having a controlled intensity of fragrance and / or taste.

[0122] According to one embodiment of the present disclosure, the sheet-forming material included in the composition for forming a sheet for an aerosol-generating article may remain in the sheet for an aerosol-generating article. Specifically, as the sheet for an aerosol-generating article is manufactured by drying the composition for forming a sheet for an aerosol-generating article, the sheet-forming material may remain in the sheet for an aerosol-generating article. Accordingly, the content ratio of the components included in the sheet-forming material may be the same between the composition for forming a sheet for an aerosol-generating article and the sheet for an aerosol-generating article.

[0123] According to one embodiment of the present disclosure, the viscosity of the composition for forming a sheet for an aerosol-generating article may be 7,000 cP or more and 18,000 cP or less at 23°C, and specifically, it may be 7,000 cP or more, 8,000 cP or more, 9,000 cP or more, 10,000 cP or more, 13,000 cP or more, or 15,000 cP or more at 23°C, and may be 16,000 cP or less, 17,000 cP or less, or 18,000 cP or less at 23°C. For example, the viscosity of the composition for forming a sheet for an aerosol-generating article may be measured using a viscometer (device name: Brookfield Viscometer DV2T). By adjusting the viscosity of the composition for forming a sheet for an aerosol-generating article within the above-described range, it is possible to implement a sheet having advantageous processability, a low variation in sheet thickness, and excellent mechanical properties.Properties

[0124] According to one embodiment of the present disclosure, the thickness of the sheet for an aerosol-generating article may be 180 µm or more and 220 µm or less, 185 µm or more and 215 µm or less, 190 µm or more and 210 µm or less, 195 µm or more and 205 µm or less, or 200 µm or more and 202 µm or less. Specifically, when the thickness of the sheet is adjusted within the above-described range, the workability of the sheet and the uniformity of the draws resistance thereof may be achieved at the same time. Meanwhile, depending on the properties required for the sheet, the conditions under which the sheet is used, etc., the thickness of the sheet may be adjusted outside the above-described range.

[0125] According to one embodiment of the present disclosure, the width of the sheet for an aerosol-generating article may be 0.6 mm or more and 1.2 mm or less, 0.7 mm or more and 1.1 mm or less, or 0.8 mm or more and 1.0 mm or less. In addition, the length of the sheet for an aerosol-generating article may be 8 mm or more and 12 mm or less, 9 mm or more and 11 mm or less, or 10 mm or more and 11 mm or less. Meanwhile, depending on the properties required for the sheet, the conditions under which the sheet is used, and the like, the width and length of the sheet may be adjusted outside the above-described ranges.

[0126] According to one embodiment of the present disclosure, the tensile strength of the sheet for an aerosol-generating article may be 1,500 N / m or more and 3,000 N / mor less, 1,700 N / m or more and 2,800 N / m or less, 1,900 N / m or more and 2,600 N / m or less, 2,100 N / m or more and 2,500 N / m or less, 1,500 N / m or more and 2,500 N / m or less, 1,800 N / m or more and 2,300 N / m or less, 2,000 N / m or more and 3,000 N / m or less, or 2,200 N / m or more and 2,700 N / m or less. The sheet for an aerosol-generating article having a tensile strength within the above-described range may have excellent processability as well as excellent durability and mechanical strength.

[0127] According to one embodiment of the present disclosure, the elongation of the sheet for an aerosol-generating article may be 0.1% or more and 10% or less, 1% or more and 9% or less, 2% or more and 8% or less, 3% or more and 7% or less, 4% or more and 60 or less, 4% or more and 8% or less, or 5% or more and 7% or less. When the elongation of the sheet for an aerosol-generating article is within the above-described range, the sheet may have excellent processability and mechanical durability. In this case, the elongation of the sheet for an aerosol-generating article may mean the elongation at break.

[0128] According to one embodiment of the present disclosure, the tensile strength and elongation of the sheet for an aerosol-generating article may be measured using a measurement method and device used in the art. For example, the tensile strength and elongation of the sheet may be measured using the method described in the 2014 publication of the International Standard ISO 1924 / 2 entitled "Paper and Board - Determination of Tensile Properties - Part 2: Constant Rate of Elongation Method". In addition, the tensile strength and elongation of the sheet may be measured using a vertical tensile strength tester (device name: Universal Tester Vertical; FRANK-PTI GMBH Co.).

[0129] According to one embodiment of the present disclosure, the basis weight of the sheet for an aerosol-generating article may be 132 g / m 2< or more and 145 g / m 2< or less, and specifically, it may be 134 g / m 2< or more, 136 g / m 2< or more, 138 g / m 2< or more, or 140 g / m 2< and may be 138 g / m 2< or less, 140 g / m 2< or less, 142 g / m 2< or less, or 145 g / m 2< or less. When the basis weight of the sheet for an aerosol-generating article is within the above-described range, the sheet may have excellent processability as well as excellent durability and mechanical strength.

[0130] According to one embodiment of the present disclosure, the sheet for an aerosol-generating article may have a water contact angle of 70° or more and 130° or less, 80° or more and 125° or less, 90° or more and 120° or less, 105° or more and 115° or less, 70° or more and 120° or less, 75° or more and 110° or less, 100° or more and 130° or less, or 100° or more and 120° or less. The sheet for an aerosol-generating article having a water contact angle within the above-described range may have excellent processability and storage stability. The water contact angle of the sheet may be measured using a method and device used in the art. For example, the contact angle of the sheet may be measured under the conditions of temperature of 23°C and relative humidity (RH) of 50% using a contact angle measurement device (device name: KRUSS DSA100 Co.).Aerosol-Generating Article and Aerosol-Generating Device

[0131] According to one embodiment of the present disclosure, there is provided an aerosol-generating article, including: a first segment; a second segment disposed on one side of the first segment; a third segment disposed on one side of the second segment; and a fourth segment disposed on one side of the third segment, the second segment includes the sheet for an aerosol-generating article.

[0132] The aerosol-generating article according to one embodiment of the present disclosure may provide excellent stability and improved smoking properties by including the sheet for an aerosol-generating article.

[0133] FIG. 1 is a perspective view showing an aerosol-generating article according to one embodiment of the present disclosure.

[0134] Referring to FIG. 1, an aerosol-generating article 100 according to the present disclosure includes first to fourth segments SEG1, SEG2, SEG3, and SEG4. Specifically, the first to fourth segments SEG1, SEG2, SEG3, and SEG4 may be arranged side by side in the longitudinal direction L of the aerosol-generating article 100. More specifically, the second segment SEG2 may be interposed between the first segment SEG1 and the third segment SEG3, and the third segment SEG3 may be interposed between the second segment SEG2 and the fourth segment SEG4. For example, the thickness direction T may be a direction intersecting the longitudinal direction L of the aerosol-generating article 100.

[0135] FIG. 2 is a schematic view showing an aerosol-generating device according to one embodiment of the present disclosure.

[0136] Referring to FIG. 2, an aerosol-generating device 300 according to the present disclosure may include a battery 310, a control unit 320, and a heater 330. For example, the aerosol-generating device 300 may further include other general or common elements, in addition to the illustrated elements. Specifically, the aerosol-generating device 300 may include: a housing forming the exterior of the aerosol-generating device; a sensor including at least one of a temperature sensor, a puff sensor, an insertion detection sensor, and an acceleration sensor; an output module (e.g. a motor, or a display) for outputting the status of the device; an input module (e.g. a button) for receiving a user's input (e.g. turning the device on / off, etc.).

[0137] The battery 310 according to the present disclosure may supply power to operate elements of the aerosol-generating device. Specifically, the battery 310 may supply power to the control unit 320 and at least one of the heater 330 and the sensor, which will be described later. For example, the battery 310 may also supply power to an induction coil.

[0138] The control unit 320 according to the present disclosure may control the overall operation of the aerosol-generating device 300. For example, the control unit 320 may control the operation of at least one of the battery 310, a sensor (not shown), and the heater 330. As an example, the control unit 320 may also control the operation of the induction coil. As another example, the control unit 320 may control the operation of a display, motor, etc. installed in the aerosol-generating device 300. In addition, the control unit 320 may check the status of each element of the aerosol-generating device to determine whether the aerosol-generating device is in an operable state.

[0139] According to one embodiment of the present disclosure, smoke and / or aerosol may be generated by heating a portion of the first segment SEG1 and a portion of the second segment SEG2 of the aerosol-generating article 100 inserted into the receiving space. According to some embodiments, the aerosol-generating article 100 inserted into the receiving space may generate smoke and / or aerosol by being heated by the heater 330. The generated smoke and / or aerosol may be inhaled by the user through the mouth end. For example, a portion of the first segment SEG1 and a portion of the second segment SEG2, which are heated, may be directly connected to each other.

[0140] According to one embodiment of the present disclosure, the heater 330 may be a resistive heater. Specifically, the heater 330 may include a conductive track, and the heater 330 may be heated when a current flows through the conductive track. Specifically, the heater 330 may be electrically connected to the battery 310 so that it may directly generate heat by receiving a current.

[0141] According to one embodiment of the present disclosure, when the sheet 10 for an aerosol-generating article is included in the second segment SEG2, the sheet 10 for an aerosol-generating article may be a single or multiple sub-sheets crimped. Here, the term "crimping" may include at least one structure selected from the group consisting of a relief structure, an intaglio structure, and a perforated structure, and specifically may include a combination of a relief structure and an intaglio structure, and more specifically may mean a structure having a plurality of crimps.

[0142] According to one embodiment of the present disclosure, the plurality of crimps in the sheet 10 for an aerosol-generating article included in the second segment SEG2 may extend in parallel along the longitudinal axis of the aerosol-generating article. According to one embodiment of the present disclosure, when the plurality of crimp extend in parallel along the longitudinal axis of the aerosol-generating article, a desired flow of aerosol generated by heating of the sheet for an aerosol-generating article may be provided, thereby implementing an appropriate level of draw resistance.

[0143] According to one embodiment of the present disclosure, the second segment SEG2 may not include a tobacco material. When the second segment SEG2 does not include a tobacco material, the active material may be effectively delivered to the user without a tobacco material, thereby further improving taste and satisfaction. Specifically, tobacco materials such as leaf tobacco have problems in that they have a unique flavor of leaf tobacco, which is perceived as an off-flavor by the user, and in that other components other than the active material (nicotine or nicotine salt) are delivered to the user's mouth as the leaf tobacco is heated. According to one embodiment of the present disclosure, by excluding the tobacco material from the second segment, it is possible to solve both the problem of being perceived as an off-flavor and the problem of delivery of other components.

[0144] According to one embodiment of the present disclosure, the first segment SEG1 may include a first filter element. For example, the first filter element may include cellulose acetate. In some examples, the first filter element may be a tow of continuous filaments made of cellulose acetate. For example, the first filter element may include an elongated hollow formed along the longitudinal direction of the aerosol-generating article 100. Here, the hollow may penetrate through the first filter element. Here, the cross-sectional shape of the hollow is not particularly limited and may be specifically Y-shaped, X-shaped, or circular.

[0145] According to one embodiment of the present disclosure, the first filter element may include a first sub-aerosol-generating material that is the same as or different from the aerosol-generating material included in the above-described sheet for an aerosol-generating article. For example, the first sub-aerosol-generating material may be impregnated into the first filter element. The atomization generated by heating the first sub-aerosol generating material may effectively deliver the active material, such as nicotine or a nicotine salt, generated in the sheet for an aerosol-generating article included in the second segment SEG2, in the downstream direction.

[0146] According to one embodiment of the present disclosure, the third segment SEG3 may include a second filter element. For example, the third segment SEG3 may function to filter the aerosol delivered from the front end of the aerosol-generating article by including the second filter element. In some examples, the second filter element is not particularly limited and may be a filter commonly used in the art. Specifically, the second filter element may be a cylindrical paper tube including a hollow structure.

[0147] According to one embodiment of the present disclosure, the fourth segment SEG4 may include a third filter element that further filters the aerosol delivered from the third segment SEG3. In some examples, the third filter element is not particularly limited and may be a filter commonly used in the art. Specifically, the third filter element may be a tow of continuous filaments made of cellulose acetate.

[0148] FIG. 3 is a schematic view showing an aerosol-generating device according to another embodiment of the present disclosure. Parts overlapping with those in FIGS. 1 and 2 will be briefly described or the description thereof will be omitted.

[0149] Referring to FIG. 3, an aerosol-generating device 300 according to one embodiment of the present disclosure may further include a cartridge 340 including a second sub-aerosol-generating material having any one of a liquid state, a solid state, a gaseous state, or a gel state therein. For example, the second sub-aerosol-generating material may include a liquid composition. Specifically, the liquid composition is a liquid including a non-tobacco material and may include the aerosol-generating material described above.

[0150] For example, the second sub-aerosol-generating material included in the cartridge 340 may be heated to generate an aerosol. The generated aerosol may be transported through an airflow channel to the first segment SEG1 of the aerosol-generating article 100 and may promote the delivery of nicotine or a nicotine salt, released from the sheet 10 for an aerosol-generating article included in the second segment SEG2, in a downstream direction.

[0151] According to one embodiment of the present disclosure, the first segment SEG1 may include a fourth filter element for filtering some components of the aerosol supplied from the cartridge 340. In addition, the first segment SEG1 may recognize the aerosol-generating article 100 by including an aluminum foil as a filter wrapping paper. For example, the fourth filter element may include a tube filter commonly used in the art.

[0152] According to one embodiment of the present disclosure, the second segment SEG2 may include the above-described sheet 10 for an aerosol-generating article. When the second segment SEG2 includes the sheet for an aerosol-generating article, it is possible to implement an aerosol-generating article that not only may reduce the delivery of an aerosol including components other than the active material, but also has no tobacco-specific odor and off-flavor.

[0153] According to one embodiment of the present disclosure, the content of the sheet for an aerosol-generating article per length of the second segment SEG2 may be 150 mg / 12 mm or more and 280 mg / 12 mm or less, 160 mg / 12 mm or more and 270 mg / 12 mm or less, 170 mg / 12 mm or more and 260 mg / 12 mm or less, 180 mg / 12 mm or more and 250 mg / 12 mm or less, 190 mg / 12 mm or more and 240 mg / 12 mm or less, 200 mg / 12 mm or more and 230 mg / 12 mm or less, or 230 mg / 12 mm or more and 280 mg / 12 mm. According to one embodiment of the present disclosure, when the content of the sheet for an aerosol-generating article is adjusted within the above-described range, the active material may be sufficiently transported to the mouth end, thereby further improving the taste performance and satisfaction.

[0154] According to one embodiment of the present disclosure, the second segment SEG2 may not include a tobacco material. When the second segment SEG2 does not include a tobacco material, the active material may be effectively delivered to the user without the tobacco material, thereby further improving taste and satisfaction. Specifically, tobacco materials such as leaf tobacco have problems in that they have a unique flavor of leaf tobacco, which is perceived as an off-flavor by the user, and in that other components other than the active material (nicotine or nicotine salt) are delivered to the user's mouth as the leaf tobacco is heated. According to one embodiment of the present disclosure, by excluding the tobacco material from the second segment, it is possible to solve both the problem of being perceived as an off-flavor and the problem of delivery of other components.

[0155] For example, the heater 330 may heat both the first segment SEG1 and the second segment SEG2.

[0156] For example, the description of the crimped structure of the sheet 10 for an aerosol-generating article may be the same as that described above with reference to FIG. 2.

[0157] FIG. 4 is a cross-sectional view showing a modified example of the sheet for an aerosol-generating article shown in each of FIGS. 2 and 3. Specifically, the sheet for an aerosol-generating article shown in FIG. 4 is a cross-sectional view of the sheet for an aerosol-generating article, taken along the longitudinal (L) axis of the aerosol-generating article 100. Alternatively, the sheet for an aerosol-generating article shown in each of FIGS. 2 and 3 may be modified into the sheet for an aerosol-generating article shown in FIG. 4.

[0158] Referring to FIG. 4, according to one embodiment of the present disclosure, the sheet 10 for an aerosol-generating article may be a laminate in which two or more sub-sheets 10a are laminated. For example, the sub-sheets may be manufactured by cutting a single sheet for an aerosol-generating article.

[0159] For example, the total number of the sub-sheets 10a is not particularly limited, but may be specifically 50 or more and 200 or less.

[0160] According to one embodiment of the present disclosure, at least one of the two or more sub-sheets 10a may include a crimped structure, and specifically, all of the sub-sheets may include a crimped structure. According to one embodiment of the present disclosure, when all of the sub-sheets include a crimped structure, the aerosol and nicotine or nicotine salt generated from the sheet 10 for an aerosol-generating article may be transported more effectively.

[0161] For example, the thickness of the sub-sheet 10a is not particularly limited, but may be specifically 50 µm or more and 300 µm or less, 100 µm or more and 270 µm or less, 150 µm or more and 250 µm or less, 50 µm or more and 250 µm or less, or 150 µm or more and 300 µm or less. In this case, the thickness direction (T) of the sub-sheet 10a may be a direction intersecting the longitudinal direction (L) of the aerosol-generating article 100, and specifically, may be a direction perpendicular to the longitudinal direction (L) of the aerosol-generating article 100.Mode for Invention

[0162] Hereinafter, the present disclosure will be described in detail with reference to examples. However, the examples according to the present disclosure may be modified into various different forms, and the scope of the present disclosure should not be interpreted as being limited to the examples described below. The examples of the present specification are provided to more completely explain the present disclosure to those skilled in the art.Materials

[0163] To prepare an active material, nicotine and citric acid, an organic acid, were prepared. Glycerin was prepared as an aerosol-generating material, and microcrystalline cellulose (MCC) having an average particle diameter (D 50 ) of about 65 µm was prepared as a support. Pulp (CAS No. 65996-61-4) was prepared as a filler, cocoa extract was prepared as an additive, and menthol was prepared as a flavoring agent.

[0164] The compound of Formula 1-1 in which R 1 is a hydroxyl group and R 21 to R 23 are each independently an ethyl group was prepared as a first moisture-regulating agent. The compound of Formula 1-2 in which R 31 and R 32 are each independently an n-heptyl group and R 33 is an n-nonyl group was prepared as a second moisture-regulating agent. Myristic acid was prepared as a third moisture-regulating agent.

[0165] Carboxymethyl cellulose (Mw: 30,000 g / mol) was prepared as a binder, and maltodextrin having a DE value of about 1 was prepared as a bulking agent.Examples and Comparative Examples

[0166] Manufacturing of Sheets for Aerosol-Generating Articles

[0167] Compositions for forming sheets for aerosol-generating articles, which include sheet-forming materials having the compositions shown in Table 1 below and a solvent (water), were prepared, and then dried under the drying conditions shown in Table 2 below, thereby manufacturing sheets for aerosol-generating articles having the compositions shown in Table 2 below. At this time, the weight ratio between the sheet-forming material and water was 1:4.

[0168] At this time, the content of each component described in Table 1 below is a relative content (unit: parts by weight) based on 100 parts by weight of the sheet-forming material, and the content of each component described in Table 2 below is a relative content (unit: parts by weight) based on 100 parts by weight of the sheet for an aerosol-generating article. [Table 1]DevisionExample 1Example 2Comparative Example 1Comparative Example 2Comparative Example 3Nicotine11111Organic acid11111Glycerin3030304215MCC4545453951Pulp66666First moisture-regulating agent1.5--0.510Second moisture-regulating agent-1.5---Third moisture-regulating agent--1.5--Binder55555Dextrin101010510.5Extract0.250.250.250.250.25Flavoring agent0.250.250.250.250.25Total sum100100100100100 [Table 2] DevisionExample 1Example 2Comparative Example 1Comparative Example 2Comparative Example 3Drying temperature105°CDrying time10 minNicotine0.970.960.960.940.98Organic acid0.970.960.960.940.98Glycerin29.1228.9328.8239.6614.70MCC43.6743.3943.2436.8349.97Pulp5.825.795.765.675.88First moisture-regulating agent1.46--0.479.80Second moisture-regulating agent-1.45---Third moisture-regulating agent--1.44--Binder4.854.824.814.734.90Dextrin9.719.649.614.7210.29Extract0.240.240.240.240.24Flavoring agent0.240.240.240.240.24Moisture2.953.583.925.562.02Total sum100100100100100 Manufacturing of Aerosol-Generating Articles

[0169] First to fourth segments were formed sequentially along the longitudinal direction of the aerosol-generating article.Manufacturing of First Segment:

[0170] A first segment (length: about 10 mm) was manufactured by impregnating a paper filter including a paper sheet having a basis weight of about 26.5 g / m 2< and a thickness of 48 µm with glycerin as a moisturizing agent.Manufacturing of Second Segment:

[0171] Each of the above-manufactured sheets (thickness: 200 µm, width: 1.0 mm, and length: 10 mm) for aerosol-generating articles was crimped using a crimping semifinished product manufacturing machine (machine name: HAUNI KDF-5 CU Cigarette Filter Making Machine). Each of the crimped sheets for aerosol-generating articles was filled into a second segment disposed on one side of the first segment, thereby manufacturing a second segment (length: about 12 mm). At this time, the content of the above-manufactured sheet for an aerosol-generating article per length of the second segment was adjusted to 230 mg / 12 mm.Manufacturing of Third Segment:

[0172] A tube filter having a hollow structure formed therein was prepared in a third segment (length: about 12 mm) disposed on one side of the second segment.Manufacturing of Fourth Segment:

[0173] A cellulose acetate filter was prepared in a fourth segment (length: about 14 mm) disposed on one side of the third segment.Experimental Example

[0174] Method for Measuring Moisture Content of Sheet for Aerosol-Generating Article:

[0175] The moisture content of 4 g of the above-manufactured sheet specimen for an aerosol-generating article was measured using a general-purpose moisture tester (device name: Brabender Moisture Tester MT-CA). Specifically, the sheet specimen was dried at 100°C for 15 minutes until the moisture was completely removed, and then the moisture content of the sheet specimen for an aerosol-generating article was measured by calculating the amount of moisture evaporated. At this time, the dried sheet specimen was exposed for 24 hours under the experimental conditions of temperature of 22.5°C and relative humidity of 40%, and then the moisture content was measured.Measurement of Contact Angle of Water on Surface of Sheet

[0176] After dropping a water droplet on the surface of the sheet manufactured in each of Examples 1 and 2 and Comparative Examples 1 to 3, the contact angle of the water droplet on the sheet surface was measured using a contact angle measurement device (device name: KRUSS DSA100) under the conditions of temperature of 23°C and relative humidity of 50%, and the results are shown in Table 3 below.Evaluation of Processability of Sheet

[0177] For the sheets manufactured in Examples 1 and 2 and Comparative Examples 1 to 3, each sheet was crimpled using an in-house made crimping machine, evaluation was performed based on the following criteria, and the results are shown in Table 3 below: X: the sheet stuck to the crimping roller and crimping was difficult; and O: the sheet was easily crimpled without sticking to the crimping roller.Evaluation of Storage Stability of Sheet

[0178] For the sheets manufactured in Examples 1 and 2 and Comparative Examples 1 to 3, the storage stability of each sheet was evaluated using the following method, and the results are shown in Table 3 below.

[0179] Each sheet was placed in a chamber with a humidity of 50% and a temperature of 25°C, sealed, and then left for 6 months. Thereafter, visual evaluation was performed based on the following criteria: X: the sheet was cracked or broken; and O: the sheet was not damaged and the adhesiveness and elongation thereof were increased by absorbing moisture.Measurement of Tensile Strength and Elongation of Sheet

[0180] The tensile strengths and elongations of the sheets manufactured in the Examples and the Comparative Examples were measured using the method described in the 2014 publication of the International Standard ISO 1924 / 2 entitled "Paper and Board - Determination of Tensile Properties - Part 2: Constant Rate of Elongation Method", and the results of the measurement are shown in Table 3 below.

[0181] Specifically, the tensile strength of each sheet specimen (thickness: 210 µm, width: 15 mm, and length: 100 mm) for an aerosol-generating article was measured in the longitudinal direction (MD direction; machine direction) of the sheet using a vertical tensile strength tester (device name: Universal Tester Vertical; FRANK-PTI GMBH Co.) in accordance with the ISO 1924 / 2: 2014 test standard. At this time, the tensile speed of the sheet specimen was set to 20 mm / min. [Table 3]DevisionExample 1Example 2Comparative Example 1Comparative Example 2Comparative Example 3Water contact angle (°)7783313068ProcessabilityOOXXXStorage stabilityOOXXXTensile strength (N / m)2,3232,1571,2458501,773Elongation (%)6.25.83.52.63.8

[0182] Referring to Table 3 above, it was confirmed that the sheets for aerosol-generating articles manufactured in Examples 1 and 2 had excellent processability and storage stability, and also had excellent mechanical properties such as tensile strength and elongation. On the other hand, it was confirmed that Comparative Examples 1 to 3 had poor processability and storage stability, and also had inferior mechanical properties to those of the Examples.

[0183] Therefore, it can be seen that the sheet for an aerosol-generating article according to one embodiment of the present disclosure has excellent processability, stability, and mechanical properties.[Description of Reference Numerals]

[0184] 10: sheet for aerosol-generating article 100: aerosol-generating article SEG1: first segment SEG2: second segment SEG3: third segment SEG4: fourth segment 300: aerosol-generating device 310: battery 320: control unit 330: heater 340: cartridge L: longitudinal direction T: thickness direction

Claims

1. A sheet for an aerosol-generating article, comprising: an active material; an aerosol-generating material; a support; and a moisture-regulating agent comprising a compound represented by Formula 1 below: wherein R1 is hydrogen or a hydroxyl group, and R2 to R4 are each independently a carboxyl group (-CO2H); or wherein R11 is a linear or branched alkyl group having 1 to 3 carbon atoms, and R12 is a linear or branched alkyl group having 3 to 12 carbon atoms.

2. The sheet for an aerosol-generating article according to claim 1, wherein the moisture-regulating agent comprises a compound represented by Formula 1-1 below: wherein R1 is a hydroxyl group, R21 to R23 are each independently hydrogen; or a linear or branched alkyl group having 1 to 3 carbon atoms; and at least one of R21 to R23 is a linear or branched alkyl group having 1 to 3 carbon atoms.

3. The sheet for an aerosol-generating article according to claim 1, wherein the moisture-regulating agent comprises a compound represented by Formula 1-2 below: wherein R31 to R33 are each independently a linear or branched alkyl group having 3 to 12 carbon atoms.

4. The sheet for an aerosol-generating article according to claim 1, wherein a content of the active material is 0.1 parts by weight or more and 8 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article.

5. The sheet for an aerosol-generating article according to claim 1, wherein a content of the aerosol-generating material is 5 parts by weight or more and 50 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article.

6. The sheet for an aerosol-generating article according to claim 1, wherein a content of the support is 20 parts by weight or more and 80 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article.

7. The sheet for an aerosol-generating article according to claim 1, wherein a content of the moisture-regulating agent is 0.1 parts by weight or more and 5 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article.

8. The sheet for an aerosol-generating article according to claim 1, wherein a weight ratio between the moisture-regulating agent and the aerosol-generating material is in a range of 1:3 to 1:100.

9. The sheet for an aerosol-generating article according to claim 1, further comprising a filler and a binder.

10. The sheet for an aerosol-generating article according to claim 9, wherein a content of the filler is 3 parts by weight or more and 8 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article, and a content of the binder is 3 parts by weight or more and 15 parts by weight or less based on 100 parts by weight of the sheet for an aerosol-generating article.

11. The sheet for an aerosol-generating article according to claim 1, having a water contact angle of 70° or more and 130° or less.

12. The sheet for an aerosol-generating article according to claim 1, further comprising an additive comprising at least one of a bulking agent, an emulsifier, a flavoring agent, an extract, and a vitamin component.

13. An aerosol-generating article, comprising: a first segment; a second segment disposed on one side of the first segment; a third segment disposed on one side of the second segment; and a fourth segment disposed on one side of the third segment, wherein the second segment comprises the sheet for an aerosol-generating article according to claim 1.

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