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

Abstract

According to an aspect, there is provided a sheet for an aerosol generating article, comprising: a support, an aerosol forming material, a binder, and a tobacco material, wherein the sheet for an aerosol generating article has an arithmetic average roughness of 1.3 μm or more and 4.0 μm or less.

Description

Technical Field

[0001] The present invention (Disclosure) relates to a sheet for aerosol generating articles, and more specifically, to a sheet for aerosol generating articles and an aerosol generating article comprising the sheet. Background Technology

[0002] Recently, there has been an increasing demand for alternative methods to overcome the drawbacks of regular cigarettes. For example, there is a growing demand for aerosol-generating articles that generate aerosols not by burning cigarettes, but by heating a medium or other aerosol-generating substances.

[0003] [Existing Technical Documents] [Patent Literature] Korean Patent Publication No. 10-2022-0008979 (Published on January 24, 2022) Summary of the Invention

[0004] Technical issues According to one aspect, a sheet for aerosol-generating articles is provided that can effectively control the pressure drop of a medium rod.

[0005] According to another aspect, an aerosol generating article is provided, comprising the aforementioned aerosol generating article sheet.

[0006] The objectives of this invention are not limited to those described above. Other objectives and advantages of the invention not mentioned above can be understood through the following description, and will become clearer through embodiments of the invention. Furthermore, it will be readily understood that the objectives and advantages of this invention can be achieved through the means and combinations thereof described in the specification.

[0007] Technical solution According to a first aspect of the present invention, a sheet for aerosol-generating articles is provided, comprising: a support; an aerosol-forming substance; an adhesive; and a tobacco substance, wherein the aerosol-generating article sheet has an arithmetic average roughness (Ra). a The size ranges from 1.3μm to 4.0μm.

[0008] According to a second aspect of the invention, the median particle size (D) of the tobacco material described in the first aspect... 50 The size can be greater than 20μm and less than 110μm.

[0009] According to a third aspect of the invention, in either the first or second aspect, the content of the tobacco substance may be 15% by weight or more and 40% by weight or less, based on the dry weight of the sheet for generating the aerosol.

[0010] According to a fourth aspect of the invention, in any one of the first to third aspects, the tobacco substance may include one or more selected from the group consisting of Flue-cured, Burley, Oriental, Cigar, Latakia, Perique, and Cavendish.

[0011] According to a fifth aspect of the invention, in any one of the first to fourth aspects, under the condition that the length of the medium rod comprising 1380 mg of the aerosol generating article sheet is 72 mm and the circumference is 22 mm, the pressure drop of the medium rod can be more than 70 mm H2O and less than 120 mm H2O.

[0012] According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the basis weight of the aerosol-generating article sheet may be 150 g / m³. 2 Above and 250g / m 2 the following.

[0013] According to a seventh aspect of the invention, in any one of the first to sixth aspects, the aerosol generating article sheet may further include moisture, wherein the moisture content may be more than 1 part by weight and less than 12 parts by weight relative to 100 parts by weight of the aerosol generating article sheet.

[0014] According to an eighth aspect of the present invention, in any one of the first to seventh aspects, the aerosol-generating article sheet may further comprise: an additive selected from one or more of the group consisting of active substances, leavening agents, moisture regulators, fillers, fragrances, emulsifiers, and vitamin components.

[0015] According to a ninth aspect of the invention, in the eighth aspect, the moisture regulator may include a compound represented by the following chemical formula 1.

[0016] [Chemical Formula 1]

[0017] In the chemical formula 1, R1 is hydrogen or hydroxyl, and R2 to R4 are each independently a carboxyl group (-CO2H). ;or R 11 R is a straight-chain or branched alkyl group having 1 to 3 carbon atoms. 12 It is a straight-chain or branched alkyl group having 3 to 12 carbon atoms.

[0018] According to a tenth aspect of the present invention, an aerosol generating article is provided comprising a sheet for aerosol generating articles according to any one of the first to ninth aspects described above.

[0019] According to an eleventh aspect of the present invention, in the tenth aspect, the aerosol generating article comprises: a first portion; a second portion disposed on one side of the first portion; a third portion disposed on one side of the second portion; and a fourth portion disposed on one side of the third portion, wherein the second portion may include a sheet for the aerosol generating article.

[0020] The technical solutions to the above-mentioned technical problems do not exhaustively list all the features of the present invention, but can be combined with some embodiments of this specification. The various features of the present invention and the advantages and effects based on these features can be understood in more detail with reference to the following specific description.

[0021] The effects of the invention On one hand, it is possible to produce aerosol-generating sheets that allow for effective control of the pressure drop of the medium rod.

[0022] In addition to the effects described above, specific effects of the present invention are also described in conjunction with the explanation of the specific methods for implementing the invention below. Furthermore, the effects of the present invention are not limited to those described above, and can be readily achieved by the means and combinations thereof described in the specification. Attached Figure Description

[0023] Figure 1 This is a perspective view showing aerosol-generating articles according to some embodiments of the present invention.

[0024] Figure 2 This is a schematic diagram illustrating an aerosol generating apparatus according to some embodiments of the present invention.

[0025] Figure 3 This is a schematic diagram illustrating an aerosol generating apparatus according to some embodiments of the present invention.

[0026] Figure 4 These are variations of the aerosol-generating articles sheet according to some embodiments of the present invention. Detailed Implementation

[0027] In this specification, unless the context clearly indicates that they have different meanings, the singular form of a statement covers the plural form of a statement.

[0028] In this specification, the "weight-average molecular weight" of a compound can be calculated using the compound's molecular weight and molecular weight distribution. In this case, the weight-average molecular weight can be calculated using methods and apparatus available in the art. For example, depending on the properties of the compound, it can be analyzed using gel permeation chromatography (GPC) or gel filtration chromatography (GFC). For instance, when using the GPC analytical method, a sample with a compound concentration of 1 wt% is prepared by placing tetrahydrofuran (THF) and the compound in a 1 mL glass vial. The standard sample (polystyrene) and the sample sample are filtered through a filter (0.45 μm pore size), and then injected into a GPC injector. The elution time of the sample sample is compared with the calibration curve of the standard sample to obtain the molecular weight and molecular weight distribution of the compound. At this point, an Infinity II 1260 (Agilent Technologies) can be used as the measuring instrument, with a flow rate set to 1.00 mL / min and a column temperature set to 40.0 °C. Alternatively, when using the GFC analysis method, an Agilent 1200 Series HPLC system can be used, with a flow rate of 1 mL / min, a mobile phase of 0.02% sodium azide, and an evaporative light scattering detector (ELSD, Altech). A calibration curve can be obtained from pullulan.

[0029] In this specification, the dry weight of the aerosol generating article sheet is defined as the total weight of the sheet-forming material, excluding water, in the sheet-forming composition used to form the aerosol generating article sheet. In some alternative or additional embodiments, the dry weight of the aerosol generating article sheet may represent the weight of the dried product obtained by completely removing moisture from the aerosol generating article sheet. In some alternative or additional embodiments, the aerosol generating article sheet may include the sheet-forming material and moisture. In some alternative or additional embodiments, the sheet-forming material may be a product from which the moisture included in the aerosol generating article sheet has been removed through a complete drying process. In some alternative or additional embodiments, the content of the composition set based on the dry weight of the aerosol generating article sheet may be the content of the composition set based on 100 parts by weight of the sheet-forming material (unit: parts by weight).

[0030] According to one aspect of the present invention, a sheet for aerosol-generating articles is provided, comprising: a support, an aerosol-forming substance, an adhesive, and a tobacco substance, wherein the arithmetic mean roughness (R0) of the sheet for aerosol-generating articles is... a The roughness is 1.3 μm or more and 4.0 μm or less. According to one aspect, when the arithmetic mean roughness of the aerosol generating article sheet is less than the stated range, the pressure drop of the medium rod including the aerosol generating article sheet may be too low; when the arithmetic mean roughness of the aerosol generating article sheet exceeds the stated range, the pressure drop of the medium rod may be too high. Alternatively, the pressure drop can be replaced by the suction resistance as described in this technical field. For example, when the arithmetic mean roughness of the aerosol generating article sheet is less than the stated range, the suction resistance of the medium rod including the aerosol generating article sheet may be too low; when the arithmetic mean roughness of the aerosol generating article sheet exceeds the stated range, the suction resistance of the medium rod may be too high. That is, by adjusting the arithmetic mean roughness of the aerosol generating article sheet to the stated range, the pressure drop or suction resistance of the medium rod can be effectively controlled.

[0031] 1. Thin sheets for aerosol-generating materials support The support according to the invention can be a component of the basic framework forming the sheet for the aerosol-generating article. If necessary, the support also functions as a carrier for the active substance described later, and thus can be a factor influencing the persistence of the active substance.

[0032] In this specification, "water insoluble" may mean that the amount of solute dissolved in 100g of water at 20°C is less than 10g, less than 5g, less than 1g, less than 0.1g, less than 0.01g, less than 0.001g, less than 0.0001g, or 0g. The water-insoluble porous materials described below may have the aforementioned solubility range in water.

[0033] According to one embodiment of the present invention, the support may include a water-insoluble porous material. This water-insoluble porous material is capable of reversibly adsorbing aerosol-forming substances, etc. That is, when storing the aerosol-generating sheet, the water-insoluble porous material minimizes the evaporation of aerosol-forming substances and other components from the aerosol-generating sheet. Furthermore, if the aerosol-generating sheet is heated, the aerosol-forming substances and other components adsorbed on the water-insoluble porous material can desorb from the water-insoluble porous material and be aerosolized.

[0034] In some embodiments of the present invention, any material capable of reversibly adsorbing components such as aerosol-forming substances can be used without limitation for the water-insoluble porous material. For example, the water-insoluble porous material may include at least one of cellulose-based materials and cellulose derivatives. For example, the cellulose-based material may refer to a network-type polysaccharide formed by overlapping straight chains of D-glucose monomers linked by β-glycosidic bonds. The cellulose derivatives may refer to a material based on the cellulose-based material and employing at least one of the following: introduction of functional groups, oxidation, reduction, and substitution of atoms. For example, the cellulose derivatives may be esterified cellulose or etherified cellulose. Specifically, the water-insoluble porous material may include microcrystalline cellulose (MCC), but the types of water-insoluble porous materials are not limited to this.

[0035] In this specification, density is defined as true density or bulk density. True density refers to the mass per unit volume, considering only the volume occupied by the substance itself. Conversely, bulk density refers to the mass of the total volume including all particles, the voids within those particles, and the voids between particles. True density can be measured, for example, using a gas pycnometer. Bulk density can be measured, for example, according to ASTM D7481.

[0036] For example, the support may include a density of 0.1 g / cm³. 3 Above and 0.4 g / cm 3 The following refers to microcrystalline cellulose. For example, the density may refer to bulk density. By incorporating microcrystalline cellulose into the support, the thickness and basis weight of the sheet for aerosol generation articles can be achieved at an appropriate level, and the mechanical properties of the sheet for aerosol generation articles can be improved.

[0037] For example, the microcrystalline cellulose can be a factor affecting the tensile strength and elongation of the sheet for aerosol generation articles. The support comprising microcrystalline cellulose allows for appropriate adjustment of the thickness and basis weight of the sheet for aerosol generation articles, and can improve the mechanical properties of the sheet for aerosol generation articles.

[0038] In some embodiments of the invention, the support comprises microcrystalline cellulose, thereby further improving the mechanical properties and aroma persistence of the sheet.

[0039] In some embodiments of the present invention, the microcrystalline cellulose can be prepared by chemically treating cellulose raw materials (e.g., wood pulp or cotton). Specifically, the microcrystalline cellulose can be prepared by acid hydrolysis of wood pulp or cotton at a temperature above about 100°C and below 140°C. For example, an inorganic acid can be used to carry out the acid hydrolysis reaction of the microcrystalline cellulose. In some non-limiting examples, the inorganic acid may include one or more selected from the group consisting of H2SO4, HCl, and HBr. Since the microcrystalline cellulose is prepared by an acid hydrolysis reaction, small amounts of anions derived from the inorganic acid (e.g., Cl-, Br-, or SO42-) may remain. 2- For example, based on the total weight of the microcrystalline cellulose, the content of anions derived from the inorganic acid can be less than 0.03% by weight, less than 0.02% by weight, or less than 0.01% by weight, and can exceed 0% by weight. For example, the content of anions derived from the inorganic acid can be analyzed by means of ion chromatography.

[0040] In some embodiments of the present invention, the support may include anions derived from inorganic acids. For example, since the support is prepared by an acid hydrolysis reaction, the support may include anions derived from inorganic acids.

[0041] In this specification, the crystallinity index is defined as the degree of structural order in a solid. For example, the crystallinity index can be calculated using X-ray diffraction (XRD) analysis, utilizing the intensity of peaks representing crystalline regions and the intensity of peaks representing amorphous regions according to the Segal method. For example, the XRD analysis can be performed on Cu Kα (λ = 1.5406). The procedure was performed under conditions of a diffraction angle of 5° to 40° and a scanning speed of 1° / minute.

[0042] In some non-limiting examples, the crystallinity index of the support may be above 30% and below 85%.

[0043] Furthermore, the degree of polymerization of the support can be measured using methods and equipment available in the art. For example, the degree of polymerization of the support can be measured using a viscometer-based degree of polymerization calculation method. After dissolving the freeze-dried electron-beam treated object in a 0.5 M copper ethylene diamine (CED) solution, the intrinsic viscosity can be measured using a capillary viscometer. The intrinsic viscosity [η] can then be determined as [η] × c (c, concentration, g / 100 mL) with reference to ASTM D4243-99. The degree of polymerization can be measured using the formula DP = [η] × 190.

[0044] For example, the degree of polymerization of the support can be 50 or more and 350 or less, 70 or more and 330 or less, 100 or more and 300 or less, 120 or more and 280 or less, 150 or more and 250 or less, or 180 or more and 320 or less. For example, the support may include microcrystalline cellulose with a degree of polymerization of 50 or more and 350 or less.

[0045] In this specification, the median particle size (D) is used. 50 The term "D" refers to the particle size corresponding to 50% of the volumetric cumulative particle size distribution of the powder being measured. 50 The measurement can be performed by dispersing the powder to be measured in a dispersion medium, then introducing the dispersed powder into a commercially available laser diffraction particle size analyzer (e.g., Microtrac S3500) to obtain a volumetric cumulative particle size distribution curve, and then measuring the particle size equivalent to 50% of the volumetric cumulative amount.

[0046] In some embodiments of the present invention, the median particle size (D) of the support is... 50 The diameter (D) can be greater than 10 μm and less than 80 μm. Specifically, the median particle size (D) of the support is... 50 The particle size can be 70 μm or less, 60 μm or less, 50 μm or less, 40 μm or less, 30 μm or less, or 25 μm or less, or 10 μm or more, 15 μm or more, or 20 μm or more. In some embodiments, by adjusting the median particle size of the support to the range described above, the strength and durability of the aerosol-generating article sheet can be further improved. As needed, by adjusting the median particle size of the support to the aforementioned range, the loading of active material within the support can be effectively controlled, and the persistence of the active material can be improved simultaneously.

[0047] In some embodiments of the present invention, the content of the support can be 15% by weight or more and 40% by weight or less, based on the dry weight of the aerosol-generating article sheet. Specifically, based on the dry weight of the aerosol-generating article sheet, the content of the support can be 15% by weight or more, 17% by weight or more, 20% by weight or more, 23% by weight or more, or 25% by weight or more, and can be 27% by weight or less, 30% by weight or less, 35% by weight or less, or 40% by weight or less. In some embodiments, by adjusting the content of the support to the range described above, the volatilization of aerosol-forming substances can be minimized while ensuring the mechanical properties of the aerosol-generating article sheet, and the strength and durability of the aerosol-generating article sheet can be effectively improved. Furthermore, when the aerosol-generating article sheet is heated, aerosols can be effectively generated.

[0048] Aerosol-forming substances In this specification, "aerosol" can be defined as a mixture of fine solid particles or droplets mixed in air or other gases to form a suspension.

[0049] According to one aspect of the present invention, the sheet for aerosol generating articles includes an aerosol forming substance that generates aerosols when the aerosol generating article is inserted into the interior of an aerosol generating apparatus and heated.

[0050] In some embodiments of the present invention, the content of the aerosol-forming substance, based on the dry weight of the aerosol-generating article sheet, can be 10% by weight or more and 30% by weight or less. Specifically, based on the dry weight of the aerosol-generating article sheet, the content of the aerosol-forming substance can be 10% by weight or more, 15% by weight or more, or 20% by weight or more, or 23% by weight or less, 27% by weight or less, or 30% by weight or less. In some embodiments, by adjusting the content of the aerosol-forming substance to within the aforementioned range, it is sufficient to generate aerosols and promote the delivery of active substances when the aerosol-generating article sheet is heated.

[0051] In some non-limiting examples, the aerosol-forming substance may include one or more 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.

[0052] adhesives The adhesive according to the invention can control the mechanical properties of the sheet by bonding the components within the aerosol-generated article sheet together.

[0053] In some embodiments of the present invention, the adhesive may include an adhesive substance that provides a flexible polymer matrix capable of forming a sheet shape. Specifically, the adhesive substance may include one or more selected from the group consisting of cellulose polymers, gums (such as guar gum, xanthan gum, or gum arabic), agar, pectin, and alginate.

[0054] For example, the cellulose polymer may include one or more selected from the group consisting of carboxymethyl cellulose (CMC), carboxyethyl cellulose (CEC), methyl cellulose (MC), ethyl cellulose (EC), hydroxymethyl cellulose (HEC), hydroxyethyl cellulose (HPC), hydroxypropyl cellulose (HEMC), and hydroxypropyl methyl cellulose (HPMC).

[0055] In some embodiments of the present invention, the weight-average molecular weight of the adhesive substance may be 10,000 g / mol or more and 2,000,000 g / mol or less. Specifically, the weight-average molecular weight of the adhesive substance may be 10,000 g / mol or more, 50,000 g / mol or more, 100,000 g / mol or more, 500,000 g / mol or more, 700,000 g / mol or more, 1,000,000 g / mol or more, or 1,500,000 g / mol or more, or may be 50,000 g / mol or less, 100,000 g / mol or less, 500,000 g / mol or less, 700,000 g / mol or less, 1,000,000 g / mol or less, 1,500,000 g / mol or less, or 2,000,000 g / mol or less. In some embodiments, by adjusting the weight-average molecular weight of the adhesive substance to within the specified range, the aerosol-forming substance and the like can be stably present within the aerosol-generating article sheet. This further improves the smoking properties of the aerosol-generating article sheet.

[0056] In some examples, the weight-average molecular weight of the cellulose polymer can be above 10,000 g / mol and below 700,000 g / mol.

[0057] In some examples, the weight-average molecular weight of the gel can be above 1,000,000 g / mol and below 2,000,000 g / mol.

[0058] In some embodiments of the present invention, the content of the adhesive, based on the dry weight of the aerosol-generating article sheet, can be 3% by weight or more and 30% by weight or less. Specifically, based on the dry weight of the aerosol-generating article sheet, the content of the adhesive can be 3% by weight or more, 5% by weight or more, 7.5% by weight or more, or 9% by weight or more, and can be 10% by weight or less, 15% by weight or less, 20% by weight or less, 25% by weight or less, or 30% by weight or less. In some embodiments, by adjusting the content of the adhesive to within the aforementioned range, the mechanical properties of the aerosol-generating article sheet can be ensured while the aerosol-forming substance can be stably retained within the aerosol-generating article sheet.

[0059] In some embodiments of the present invention, the adhesive may include at least a first adhesive, specifically, it may include a first adhesive and a second adhesive with different viscosities. Here, the adhesive defined by viscosity may be an adhesive solution (or adhesive dispersion) comprising the solid components of the adhesive used in preparing the sheet-forming composition and a solvent (or dispersion medium).

[0060] In some embodiments of the present invention, the viscosity of the first adhesive can be 100 mPa·s or more and 500 mPa·s or less. Specifically, at 25°C, the viscosity of the first adhesive can be 150 mPa·s or more and 450 mPa·s or less, 200 mPa·s or more and 400 mPa·s or less, 250 mPa·s or more and 350 mPa·s or less, 100 mPa·s or more and 400 mPa·s or less, or 150 mPa·s or more and 300 mPa·s or less. More specifically, the viscosity of the first adhesive can be measured using a Brookfield LVDV-1 viscometer with rotor #2 at 25°C, a concentration of 2 wt%, and a rotational speed of 30 RPM.

[0061] In some embodiments of the present invention, the adhesive may be composed of the first adhesive. In some embodiments, because the adhesive is composed of the first adhesive, the density of the aerosol-generating article sheet can be increased, and the arithmetic mean roughness of the sheet can be reduced. The density and arithmetic mean roughness of the sheet can each independently affect the pressure drop of the medium rod. In this case, the viscosity of the first adhesive can be adjusted to be within the aforementioned range to increase the pressure drop of the medium rod.

[0062] In some embodiments of the present invention, the viscosity of the second adhesive can be 800 mPa·s or more and 2,000 mPa·s or less. Specifically, at 25°C, the viscosity of the second adhesive can be 900 mPa·s or more and 1,800 mPa·s or less, 1,000 mPa·s or more and 1,600 mPa·s or less, 1,300 mPa·s or more and 1,500 mPa·s or less, 800 mPa·s or more and 1,500 mPa·s or less, 1,000 mPa·s or more and 1,250 mPa·s or more, or 1,400 mPa·s or more and 2,000 mPa·s or less. More specifically, the viscosity of the second adhesive can be measured using a Brookfield LVDV-1 viscometer with rotor #3 at 25°C, a concentration of 1 wt%, and a rotational speed of 60 RPM.

[0063] For example, the first adhesive may include a cellulose-based polymer that satisfies the viscosity conditions, specifically, it may include carboxymethyl cellulose. Furthermore, the second adhesive may include a cellulose-based polymer that satisfies the viscosity conditions, specifically, it may include carboxymethyl cellulose.

[0064] For example, the viscosity of the adhesive can be correlated with its weight-average molecular weight using the Mark-Houwink equation. Specifically, the viscosity of the adhesive can increase with increasing weight-average molecular weight, and decrease with decreasing weight-average molecular weight.

[0065] In some embodiments of the present invention, the adhesive may include two or more adhesives with different weight-average molecular weights. Specifically, the adhesive may include a first adhesive and a second adhesive different from the first adhesive. For example, the first adhesive and the second adhesive may include cellulose polymers. For example, the weight-average molecular weight of the first adhesive may be different from that of the second adhesive, specifically, it may be lower than the weight-average molecular weight of the second adhesive. Specifically, the adhesive includes two or more adhesives with different weight-average molecular weights to control the viscosity of the sheet-forming composition to a viscosity suitable for sheet formation, thereby effectively improving the mechanical properties of the sheet.

[0066] In some embodiments of the present invention, the content of the first adhesive can be 1% by weight or more and 15% by weight or less, based on the dry weight of the sheet for generating aerosol articles. Specifically, based on the dry weight of the sheet for generating aerosol articles, the content of the first adhesive can be 3% by weight or more, 5% by weight or more, or 7% by weight or more, and can be 10% by weight or less, 13% by weight or less, or 15% by weight or less. In some embodiments, by adjusting the content of the first adhesive to the range described above, the viscosity of the sheet-forming composition is controlled to a viscosity suitable for sheet formation, thereby effectively improving the mechanical properties of the sheet.

[0067] In some embodiments of the present invention, the content of the second adhesive can be 1% by weight or more and 7% by weight or less, based on the dry weight of the aerosol-generating article sheet. Specifically, based on the dry weight of the aerosol-generating article sheet, the content of the second adhesive can be 1% by weight or more, 3% by weight or more, 5% by weight or more, or 7% by weight or less, or 1% by weight or less, 3% by weight or less, 5% by weight or less, or 7% by weight or less. In some embodiments, by adjusting the content of the second adhesive to the range described above, the viscosity of the sheet-forming composition is controlled to a viscosity suitable for sheet formation, thereby effectively improving the mechanical properties of the sheet.

[0068] In some embodiments of the present invention, the weight ratio of the second adhesive to the first adhesive (second adhesive: first adhesive) can be from 1:1 to 1:4. Specifically, the weight ratio of the second adhesive to the first adhesive can be from 1:1 to 1:3, 1:1.5 to 1:3.5, 1:2 to 1:3, 1:1 to 1:2.5, or 1:2 to 1:4. In some embodiments, by adjusting the weight ratio of the second adhesive to the first adhesive to the range described above, the sheet-forming composition is made to have a viscosity suitable for sheet formation. Furthermore, the mechanical properties of the manufactured sheet can be effectively improved. Additionally, the sheet-forming composition can have a more uniform composition and improved viscosity stability can be achieved. For example, the weight ratio of the first adhesive to the second adhesive can be the weight ratio between the solid components of the adhesive solution (or adhesive dispersion) described above.

[0069] Tobacco substances In this specification, "tobacco substance" is not particularly limited and may include tobacco raw materials such as tobacco leaves and tobacco stems, and substances processed therefrom. For example, the tobacco substance may include tobacco leaves; expanded tobacco stems; tobacco shreds (shredded tobacco leaves, shredded reconstituted tobacco, etc.); or tobacco sheets (reconstituted tobacco sheets, etc.); granular tobacco; or liquid tobacco composition; etc. For example, the tobacco substance may be tobacco leaf powder.

[0070] The tobacco material according to the present invention may include nicotine or a salt thereof as an active ingredient. When the aerosol-generating article sheet is heated, the nicotine or a salt thereof can be delivered to the user's mouth via the aerosol-generating material. Accordingly, the tobacco material can be a factor controlling the taste. Furthermore, the tobacco material can be a factor controlling the basis weight and thickness of the aerosol-generating article sheet by filling the spaces between supports to homogenize the density.

[0071] In some embodiments of the present invention, the tobacco substance may include one or more selected from the group consisting of Flue-cured, Burley, Oriental, Cigar, Latakia, Perique, and Cavendish. In some embodiments, the tobacco substance, by including one or more selected from the group consisting of Flue-cured, Burley, Oriental, Cigar, Latakia, Perique, and Cavendish, effectively controls the mouthfeel of the aerosol-generating article and improves the flavor balance.

[0072] For example, the Flue-cured, Burley, and Oriental varieties can be distinguished based on their curing method.

[0073] In addition, the nicotine and total sugar content can vary depending on the type of tobacco material. The nicotine and total sugar content may be factors affecting the taste of aerosol-generating products.

[0074] In some embodiments of the present invention, the total sugar content, based on the total weight of the aerosol-generating article sheet, can be 5% by weight or more and 10% by weight or less. Specifically, based on the total weight of the aerosol-generating article sheet, the total sugar content can be 5% by weight or more, 6% by weight or more, 7% by weight or more, 7.5% by weight or more, 7.9% by weight or more, or 8.0% by weight or more, or it can be 7% by weight or less, 7.5% by weight or less, 7.9% by weight or less, 8.0% by weight or less, 9% by weight or less, or 10% by weight or less. For example, the total sugar content can be measured by anthrone analysis or by gas chromatography-mass spectrometry (GC-MS). Specifically, by adjusting the total sugar content to within the above-mentioned range, the intensity of the taste can be effectively controlled, thereby further improving the flavor balance.

[0075] In some embodiments of the present invention, the nicotine content, based on the total weight of the aerosol-generating article sheet, can be 0.5% by weight or more and 2.0% by weight or less. Specifically, based on the total weight of the aerosol-generating article sheet, the nicotine content can be 0.5% by weight or more, 0.75% by weight or more, 0.8% by weight or more, 0.81% by weight or more, or 0.9% by weight or more, and can be 1.0% by weight or less, 1.5% by weight or less, 1.7% by weight or less, or 2.0% by weight or less. For example, the nicotine content can be measured using the CORESTA CRM 85 analytical method. Specifically, by adjusting the nicotine content to within the above-mentioned range, the intensity of the taste can be effectively controlled, thereby further improving the flavor balance.

[0076] In some embodiments of the present invention, the median particle size D of the tobacco substance is... 50 It can be greater than 20 μm and less than 110 μm. Specifically, the median particle size D of the tobacco material... 50The particle size can be 25 μm or larger, 50 μm or larger, 75 μm or larger, or 100 μm or larger, or it can be less than 50 μm, less than 75 μm, or less than 100 μm. In some embodiments, by adjusting the median particle size of the tobacco material to within the specified range, the tobacco material can be uniformly dispersed within the aerosol-generating article sheet, and the thickness and basis weight of the aerosol-generating article sheet can be achieved at an appropriate level. Furthermore, by adjusting the median particle size of the tobacco material to within the specified range, the surface roughness of the aerosol-generating article sheet can be controlled, thereby controlling the pressure drop of the medium rod at an appropriate level.

[0077] In some embodiments of the present invention, the content of the tobacco substance can be 15% by weight or more and 40% by weight or less, based on the dry weight of the sheet for aerosol generation. Specifically, based on the dry weight of the sheet for aerosol generation, the content of the tobacco substance can be 15% by weight or more, 17% by weight or more, 20% by weight or more, 23% by weight or more, or 28% by weight or more, and can be 30% by weight or less, 35% by weight or less, or 40% by weight or less. In some embodiments, by adjusting the content of the tobacco substance to within the specified range, the empty spaces between the supports can be filled to uniformly adjust the density. Accordingly, the basis weight and thickness of the sheet for aerosol generation can be effectively controlled.

[0078] In some embodiments of the present invention, the content of the smoked seed can be 21% by weight or more and 29% by weight or less, based on the dry weight of the aerosol-generating article sheet. Specifically, based on the dry weight of the aerosol-generating article sheet, the content of the smoked seed can be 21% by weight or more, 23% by weight or more, or 25% by weight or more, and can be 27% by weight or less or 29% by weight or less. By adjusting the content of the smoked seed to within the above-mentioned range, the intensity of the flavor can be effectively controlled, thereby further improving the balance of the taste.

[0079] In some embodiments of the present invention, based on the dry weight of the aerosol-generating article sheet, the content of any one of the varieties selected from the group consisting of Burley, Oriental, and combinations thereof (hereinafter referred to as "special leaves") can be 1% by weight or more and 11% by weight or less. Specifically, based on the dry weight of the aerosol-generating article sheet, the content of the special leaves can be independently 1% by weight or more or 2.5% by weight or more, or 5% by weight or less or 7% by weight or less. In some embodiments, by adjusting the content of the special leaves to within the above-mentioned range, the intensity of the mouthfeel can be effectively controlled, thereby further improving the balance of flavor.

[0080] In some embodiments of the present invention, based on the dry weight of the aerosol-generating article sheet, the content of Burley grape variety can be 1% or more and 4% or less by weight, and the content of Oriental variety can be 1% or more and 4% or less by weight. Specifically, based on the dry weight of the aerosol-generating article sheet, the content of Burley grape variety can be 2% or more by weight or 2.5% or more by weight, or 3.0% or less by weight or 3.5% or less by weight, and the content of Oriental variety can be 2% or more by weight or 2.5% or more by weight, or 3.0% or less by weight or 3.5% or less by weight. In some embodiments, by adjusting the content of the special leaves to the above-mentioned range, the intensity of the taste can be effectively controlled, thereby further improving the balance of flavor.

[0081] physical properties Arithmetic mean roughness (R a Arithmetic Average Roughness (ARR) refers to the average of the absolute values ​​of all height deviations on a sheet surface, with the average line in the cross-sectional profile obtained by measuring the height variation on the sheet surface as a reference.

[0082] In some embodiments of the present invention, the arithmetic mean roughness (R0) of the sheet used for generating aerosol articles is... a The arithmetic average roughness (AMR) is 1.3 μm or more and 4.0 μm or less. Specifically, the arithmetic average roughness of the aerosol generating article sheet can be 1.4 μm or more, 1.9 μm or more, 2.3 μm or more, 2.6 μm or more, 3.0 μm or more, or 3.4 μm or more, or it can be less than 1.6 μm, less than 1.9 μm, less than 2.3 μm, less than 2.6 μm, less than 3.0 μm, or less than 3.4 μm. Specifically, the arithmetic average roughness of the aerosol generating article sheet can be a factor that affects the pressure drop of the medium rod including the aerosol generating article sheet. In some embodiments, by adjusting the arithmetic average roughness of the aerosol generating article sheet to the range described above, the pressure drop of the medium rod can be effectively controlled. In some non-limiting examples, the arithmetic mean roughness of the sheet used to generate the aerosol article can be measured using a surface profilometer (equipment name: KLA-Tencor, D-300) according to ISO 4287 & 4288.

[0083] In some embodiments of the present invention, the sheet for generating aerosol articles may include a first surface and a second surface opposite to the first surface. Specifically, the arithmetic mean roughness of the first surface and the second surface may be the same as or different from each other. For example, the arithmetic mean roughness of the first surface and the second surface may be independently within the range described above.

[0084] Additionally, pressure drop refers to the difference in pressure loss that occurs between the inlet and outlet of the medium rod under a volumetric flow rate of approximately 17.5 mL / s. For example, the pressure drop can vary depending on the median particle size of the tobacco material, the type of binder, the physical properties (viscosity) of the binder, the binder content, and the arithmetic mean roughness of the sheet used to generate the aerosol.

[0085] In some embodiments of the present invention, when the length of the medium rod comprising a sheet for generating aerosol articles of 1,380 mg is 72 mm and the circumference is 22 mm, the pressure drop of the medium rod can be 70 mmH2O or more and 120 mmH2O or less. Specifically, the pressure drop of the medium rod can be 70 mmH2O or more, 73 mmH2O or more, 77 mmH2O or more, 79 mmH2O or more, or 88 mmH2O or more, and can be 75 mmH2O or less, 77 mmH2O or less, 79 mmH2O or less, 80 mmH2O or less, 88 mmH2O or less, 90 mmH2O or less, 104 mmH2O or less, or 120 mmH2O or less. In some examples, the pressure drop of the medium rod can be 70 mmH2O or more and 90 mmH2O or less. In some embodiments, by adjusting the pressure drop of the medium rod to the range stated above, the temperature distribution within the medium rod can be uniformly adjusted, thereby further improving the aerosol persistence per aspiration. In some non-limiting examples, the pressure drop of the medium rod can be measured according to CORESTA CRM41, ISO 3308, or ISO 3402. Alternatively, under the pressure drop measurement conditions, the mass of the aerosol-generating article sheet can be more than 1,250 mg and less than 1,500 mg.

[0086] In some embodiments of the present invention, the thickness of the aerosol-generating article sheet can be 100 μm or more and 400 μm or less. Specifically, the thickness of the aerosol-generating article sheet can be 200 μm or more, 230 μm or more, 235 μm or more, or 250 μm or more, and can be 220 μm or less, 230 μm or less, 235 μm or less, 250 μm or less, or 300 μm or less. Specifically, when the thickness of the sheet is adjusted to be within the aforementioned range, both the processability of the sheet and the uniformity of the suction resistance can be achieved simultaneously. In addition, depending on the required physical properties of the sheet, the conditions for using the sheet, etc., the thickness of the sheet can also be adjusted to be outside the aforementioned range.

[0087] In some embodiments of the present invention, the tensile strength of the aerosol-generating article sheet may be 1,000 N / m or more and 3,000 N / m or less, 1,500 N / m or more and 3,000 N / m or 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, 2,000 N / m or more and 2,700 N / m or less, 2,000 N / m or more and 2,200 N / m or less, or 2,100 N / m or more and 2,200 N / m or less. The aerosol-generating article sheet having tensile strength within the aforementioned range has excellent processability, as well as excellent durability and mechanical strength.

[0088] In some embodiments of the present invention, the basis weight of the aerosol-generating article sheet can be 150 g / m³. 2 Above and 250 g / m 2 Below or 170 g / m 2 Above and 200 g / m 2 Specifically, the basis weight of the aerosol-generating article sheet can be 175 g / m³. 2 Above, 185 g / m 2 Above, 190 g / m 2 Above, 195 g / m 2 Above or 200 g / m 2 The above can be 185 g / m 2 Below, 190 g / m 2 Below, 195 g / m 2 Below, 200 g / m 2Below, 210 g / m 2 Below, 220g / m 2 Below, 230 g / m 2 Below, 240 g / m 2 Below or 250 g / m 2 The following applies: When the basis weight of the sheet for generating aerosol articles is within the aforementioned range, the sheet exhibits excellent processability, durability, and mechanical strength.

[0089] In some embodiments of the present invention, the elongation of the sheet for aerosol generation articles can 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 6% or less, 4% or more and 8% or less, or 5% or more and 7% or less. When the elongation of the sheet for aerosol generation articles is within the aforementioned range, the sheet can have excellent processability and mechanical durability. In this case, the elongation of the sheet for aerosol generation articles can refer to the elongation at break.

[0090] In some embodiments of the present invention, the tensile strength and elongation of the aerosol-generating article sheet can be measured using measurement methods and apparatus available in the art. For example, the tensile strength and elongation of the sheet can be measured using the methods described in the international standard ISO 1924 / 2, published in 2014, entitled "Paper and paperboard—Determination of tensile properties—Part 2: Constant-rate tensile testing." Alternatively, the tensile strength and elongation of the sheet can be measured using a vertical tensile testing machine (equipment name: Universal Tester Vertical; FRANK-PTI GMBH).

[0091] In some embodiments of the present invention, the water contact angle of the aerosol-generating article sheet can be 70° or higher and 130° or lower, 80° or higher and 125° or lower, 90° or higher and 120° or lower, 105° or higher and 115° or lower, 70° or higher and 120° or lower, 75° or higher and 110° or lower, 100° or higher and 130° or lower, or 100° or higher and 120° or lower. Aerosol-generating article sheet with a water contact angle satisfying the foregoing range can exhibit excellent processability and storage stability. The water contact angle of the sheet can be measured using methods and apparatus used in the art. For example, the contact angle of the sheet can be measured using a contact angle measuring instrument (device name: DSA 100, KRUSS Corporation) at 23°C and 50% relative humidity.

[0092] In some embodiments of the present invention, the thermal conductivity of the aerosol-generating article sheet may be 0.13 W / (m·K) or more and 0.20 W / (m·K) or less. Specifically, the thermal conductivity of the aerosol-generating article sheet may be 0.15 W / (m·K) or more, 0.17 W / (m·K) or more, or 0.19 W / (m·K) or more, and may be 0.20 W / (m·K) or less. In some embodiments, by adjusting the thermal conductivity of the aerosol-generating article sheet to the range described above, an aerosol-generating article sheet that facilitates thermal control and maintains nicotine levels at an appropriate level can be achieved. For example, the thermal conductivity of the aerosol-generating article sheet may be a value calculated by multiplying the thermal diffusivity measured according to the dynamic hot-wire method, the density of the sheet, and the specific heat capacity of the sheet.

[0093] Additionally, the specific heat capacity of aerosol-generating articles sheet can be defined as the amount of heat energy required to raise the temperature of a unit mass of aerosol-generating articles sheet by 1 K. In other words, specific heat capacity is a measure of the sheet's ability to store heat energy and can be measured according to ASTM E1269.

[0094] In some embodiments of the present invention, the specific heat capacity (C) of the aerosol generating article sheet may be 1,730 kJ / (kg·K) or more and 2,100 kJ / (kg·K) or less. Specifically, the specific heat capacity (C) of the aerosol generating article sheet may be 1,756 kJ / (kg·K) or more, 1,800 kJ / (kg·K) or more, 1,900 kJ / (kg·K) or more, or 1,960 kJ / (kg·K) or more, and may be 2,000 kJ / (kg·K) or less, 2,080 kJ / (kg·K) or less, or 2,100 kJ / (kg·K) or less. In some embodiments, by adjusting the specific heat capacity of the aerosol-generating article sheet to the range described above, it is possible to make heat control easy and maintain nicotine levels consistently at an appropriate level for the aerosol-generating article sheet.

[0095] Moisture In some embodiments of the present invention, the sheet for aerosol-generating articles may further include moisture that affects the thermal and mechanical properties felt by the user of the aerosol-generating article. Specifically, when the moisture content of the sheet for aerosol-generating articles is high, although the ease of winding is excellent, the amount of vaporized water vapor is higher, which may lead to an increased intensity of heat that makes the user feel hot. Conversely, when the moisture content of the sheet for aerosol-generating articles is low, the amount of vaporized water vapor is lower, resulting in a lower intensity of heat, but problems such as tearing and a decrease in mechanical properties may occur when winding the sheet. That is, there is an inverse relationship between thermal performance and mechanical properties: when one performance is improved, the other performance is reduced.

[0096] In some embodiments of the present invention, based on 100 parts by weight of the aerosol-generating article sheet, the moisture content can be 1 part by weight or more and 12 parts by weight or less. Specifically, based on 100 parts by weight of the aerosol-generating article sheet, the moisture content can be 1 part by weight or more, 3 parts by weight or more, or 5 parts by weight or more, or 6 parts by weight or less, 7 parts by weight or less, or 9 parts by weight or less. For example, the moisture content of the aerosol-generating article sheet can be measured under conditions of 22°C and 50% relative humidity. In some embodiments, by adjusting the moisture content of the aerosol-generating article sheet to the range described above, an aerosol-generating article sheet with excellent mechanical properties can be achieved while minimizing the heat sensation felt by the user during smoking.

[0097] For example, the moisture content of the aerosol-generating article sheet can be changed by adjusting the drying temperature, drying time, and solvent (water) content of the aerosol-generating article sheet forming composition, respectively.

[0098] additive In some embodiments of the present invention, the aerosol-generating article sheet may further include one or more additives selected from the group consisting of active substances, leavening agents, moisture regulators, fillers, fragrances, emulsifiers, and vitamin components.

[0099] In this specification, "active substance" may include alkaloid compounds that are delivered to the user when the aerosol-generating article is heated in an aerosol-generating device. Specifically, the active substance may include nicotine, nicotine derivatives, or nicotine salts. In this case, when nicotine is combined with an organic acid, the pH of nicotine decreases, allowing nicotine to be delivered to the user in the form of nicotine salts, which have a high absorption rate by the human body. Here, the nicotine, nicotine derivatives, or nicotine salts included in the active substance may be constituent elements that are distinct from nicotine or nicotine salts included as active ingredients in tobacco substances.

[0100] In some embodiments of the invention, the aerosol-generating article sheet may further include an active substance to deliver nicotine or nicotine salts to the user.

[0101] In some embodiments of the present invention, based on the dry weight of the aerosol-generating article sheet, the content of the active substance can be less than 4% by weight, less than 3% by weight, less than 2% by weight, or less than 1% by weight, or more than 0.1% by weight. In some embodiments, by adjusting the content of the active substance to within the aforementioned range, the active substance can be sufficiently delivered to the user's mouth to fully achieve smoking satisfaction.

[0102] In some embodiments of the present invention, the nicotine content, based on the dry weight of the aerosol-generating article sheet, can be 0.5% by weight or more and 2.0% by weight or less. In some embodiments, by adjusting the nicotine content to within the stated range, nicotine or nicotine salts can be adequately delivered to the user's mouth, effectively providing the user with taste satisfaction and superior smoking properties.

[0103] In some embodiments of the present invention, the content of the organic acid can be 0.5% by weight or more and 2.0% by weight or less, based on the dry weight of the aerosol-generating article sheet. In some embodiments, by adjusting the content of the organic acid to within the stated range, the pH of nicotine can be sufficiently reduced, thereby enabling the effective delivery of nicotine salts in salt form to the user's mouth.

[0104] In some embodiments of the present invention, the organic acid may include: selected from 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, and fumaric acid. It comprises one or more of the group consisting of citric acid, gluconic acid, malonic acid, and malic acid; or hydrates thereof, specifically, it may include citric acid or citric acid hydrate, and more specifically, it may include citric acid monohydrate. In some embodiments of the present invention, when citric acid monohydrate is used as the organic acid, the pH of nicotine can be lowered, thereby further improving the absorption rate by the human body.

[0105] From another perspective, the aforementioned organic acid hydrates can be one of the factors affecting the moisture content of sheets for aerosol-generating articles. By using the aforementioned organic acid hydrates, sheets for aerosol-generating articles with excellent mechanical properties, such as minimizing the heat felt by the user and preventing tearing during winding, can be achieved.

[0106] The loosening agent according to the present invention can increase the volume of the sheet for forming aerosol-generating articles by increasing the total mass of the constituent components other than water in the composition for forming aerosol-generating articles. Furthermore, the loosening agent can increase the viscosity of the composition for forming aerosol-generating articles without substantially increasing the viscosity.

[0107] In some embodiments of the present invention, the leavening agent may include at least one of starches and starch hydrolysates. Starch hydrolysates can refer to substances obtained through a process including the hydrolysis of starch. Starch hydrolysates may be, for example, substances obtained by direct hydrolysis of starch (i.e., dextrin), or substances obtained by hydrolyzing starch after heat treatment (i.e., recalcitrant dextrin). For example, the leavening agent may include dextrin. Specifically, the leavening agent may include at least one of cyclodextrin and maltodextrin. However, the types of dextrin are not limited to these.

[0108] DE is an abbreviation for dextrose equivalent, a value representing the degree of starch hydrolysis (i.e., the saccharification rate of starch). The DE value is measured using the Willstatter-Schudel method. The DE value is a specific numerical value measured using the Willstatter-Schudel method. The properties of hydrolyzed starch (starch hydrolysate), such as the molecular weight of the starch hydrolysate or the arrangement of the sugar molecules constituting it, may not be constant for each molecule, but rather exhibit some distribution or variation. Due to the distribution or variation of these properties, or differences in the cleavage intervals, each molecule of starch hydrolysate expresses different physical properties (e.g., the DE value). As mentioned above, starch hydrolysate is a collection of molecules exhibiting different physical properties, but the measurement result using the Willstatter-Schudel method (i.e., the DE value) is considered a representative value representing the degree of starch hydrolysis.

[0109] In some embodiments of the present invention, the leavening agent may include a starch hydrolysate with a DE value of 1 or higher and 20 or lower. For example, the DE value of the starch hydrolysate may be 2 or higher and 18 or lower, 3 or higher and 15 or lower, 5 or higher and 10 or lower, 10 or higher and 20 or lower, 12 or higher and 18 or lower, 1 or higher and 5 or lower, or 1 or higher and 10 or lower. Specifically, the starch hydrolysate may include at least one of dextrin having a DE value of 1 or higher and 5 or lower and recalcitrant dextrin having a DE value of 10 or higher and 20 or lower. More specifically, the leavening agent may include the dextrin as a starch hydrolysate. By using a leavening agent comprising a starch hydrolysate having the aforementioned DE values, sheet shrinkage can be prevented during the manufacturing process and storage of aerosol-generating articles. This improves processability during the manufacture of aerosol-generating articles and enhances storage stability.

[0110] In some embodiments of the present invention, the content of the leavening agent, based on the dry weight of the aerosol-generating article sheet, can be 0.1% by weight or more and 20% by weight or less. Specifically, based on the dry weight of the aerosol-generating article sheet, the content of the leavening agent can be 0.1% by weight or more, 5.0% by weight or more, or 7.5% by weight or more, or 9% by weight or less, 10% by weight or less, 15% by weight or less, or 20% by weight or less. In some embodiments, by adjusting the content of the leavening agent to the range described above, sheet shrinkage can be effectively prevented during the manufacturing process and storage of the aerosol-generating article sheet. Furthermore, by adjusting the content of the leavening agent to the range described above, the aroma retention time of the aerosol-generating article sheet can be extended, and the water solubility, thermal stability, and oxidation resistance of the aroma components can be improved.

[0111] For example, the content of the loosening agent may vary depending on the viscosity or weight-average molecular weight of the adhesive.

[0112] In some embodiments of the present invention, the aerosol-generating article sheet may further include a moisture regulator. Specifically, the moisture regulator may include any one selected from the group consisting of compounds represented by Chemical Formula 1, benzyl benzoate, and combinations thereof; more specifically, it may include compounds represented by Chemical Formula 1. In some embodiments, using the compound represented by Chemical Formula 1 as the moisture regulator further improves the moisture-resistant properties of the aerosol-generating article sheet compared to benzyl benzoate. Furthermore, the moisture regulator can also control the heat-sensitivity factor by controlling the moisture content of the sheet.

[0113] [Chemical Formula 1]

[0114] In the chemical formula 1, R1 is hydrogen or hydroxyl, and R2 to R4 are each independently a carboxyl group (-CO2H). ;or R 11 R is a straight-chain or branched alkyl group having 1 to 3 carbon atoms. 12 It is a straight-chain or branched alkyl group having 3 to 12 carbon atoms. Specifically, the R 11 The alkyl group may have 1 to 2 or 2 to 3 carbon atoms, wherein R 12 The alkyl group may have 5 to 10, 7 to 10, 3 to 10, 5 to 9, 7 to 12, or 7 to 9 carbon atoms. In the chemical formula, "*" indicates a binding site.

[0115] By utilizing a moisture regulator comprising a compound represented by Chemical Formula 1, the storage stability and processability of the aerosol-generating article sheet can be further improved. Specifically, the aerosol-generating article sheet includes the moisture regulator, thereby improving its moisture-resistant properties. Consequently, the aerosol-generating article sheet exhibits excellent long-term storage reliability, effectively suppressing deformation or damage during storage under humid conditions. Furthermore, by adjusting the moisture content within the aerosol-generating article sheet, an appropriate level of thermal sensitivity can be achieved.

[0116] In some embodiments of the invention, at least two of R2 to R4 may be identical to each other. When using a moisture regulator comprising at least two identical compounds represented by Formula 1 from R2 to R4, the storage stability and processability of the aerosol-generating article sheet can be effectively improved.

[0117] In some embodiments of the present invention, the moisture regulator may include a compound represented by the following chemical formula 1-1.

[0118] [Chemical Formula 1-1]

[0119] In the chemical formula 1-1, R1 is a hydroxyl group, R 21 To R 23 Each is independently hydrogen; or a straight-chain or branched alkyl group having 1 to 3 carbon atoms, R 21 To R 23 At least one of them is a straight-chain or branched alkyl group having 1 to 3 carbon atoms. Specifically, the R 21 To R 23 The number of carbon atoms in the alkyl group can be independently 1 to 2 or 2 to 3. Furthermore, R 21 To R 23 At least two of them can be independently straight-chain or branched alkyl groups having 1 to 3 carbon atoms. Furthermore, in R... 21 To R 23 When each is an alkyl group independently, they can be identical to each other.

[0120] By using a moisture regulator comprising a compound represented by the aforementioned chemical formula 1-1, the moisture-resistant properties of the aerosol-generating article sheet can be improved, and the moisture content of the aerosol-generating article sheet can be easily adjusted. Furthermore, when using a moisture regulator comprising a compound represented by the aforementioned chemical formula 1-1, aerosol-generating article sheets with excellent long-term storage reliability can be achieved. Additionally, by adjusting the moisture content within the aerosol-generating article sheet, an appropriate level of thermal sensitivity can be achieved.

[0121] In some embodiments of the present invention, the moisture regulator may include compounds represented by the following chemical formulas 1-2.

[0122] [Chemical Formula 1-2]

[0123] In the chemical formulas 1-2, R 31 To R 33 Each is independently a straight-chain or branched alkyl group having 3 to 12 carbon atoms. Specifically, R 31 To R 33 The number of carbon atoms in the alkyl group can be independently 5 to 10, 7 to 10, 3 to 10, 5 to 9, 7 to 12, or 7 to 9. Furthermore, R 31 To R 33 At least two of them can be the same as each other. Furthermore, R 33 The number of carbon atoms in an alkyl group can be greater than R. 31 and R 32 The number of carbon atoms in the alkyl group. When using a moisture regulator including compounds represented by the chemical formulas 1-2, the storage stability and processability of the aerosol-generating article sheet can be effectively improved. Furthermore, by adjusting the moisture content within the aerosol-generating article sheet, an appropriate level of thermal sensitivity can be achieved.

[0124] In some embodiments of the present invention, the content of the moisture regulator, based on the dry weight of the aerosol-generating article sheet, can be 0.5% by weight or more and 2.0% by weight or less. Specifically, based on the dry weight of the aerosol-generating article sheet, the content of the moisture regulator can be 0.5% by weight or more or 1.0% by weight or less, or 1.5% by weight or less or 2.0% by weight or less. In some embodiments, by adjusting the content of the moisture regulator to the aforementioned range, the moisture-resistant properties of the aerosol-generating article sheet can be improved, and the moisture content of the aerosol-generating article sheet can be easily adjusted. Furthermore, by adjusting the content of the moisture regulator to the aforementioned range, the long-term storage reliability of the aerosol-generating article sheet can be further improved, and sheet deformation or damage during storage under humid conditions can be effectively suppressed. Furthermore, the viscosity stability of the sheet-forming composition can be further improved. Additionally, an appropriate level of thermal sensitivity can be achieved.

[0125] In some embodiments of the present invention, the weight ratio of the moisture regulator to the aerosol-forming substance can be from 1:3 to 1:100. Specifically, the weight ratio of the moisture regulator to the aerosol-forming substance can be from 1:5 to 1:80, 1:10 to 1:50, 1:12 to 1:30, 1:3 to 1:50, or 1:10 to 1:30. When the weight ratio of the moisture regulator to the aerosol-forming substance in the aerosol-generating article sheet is within the aforementioned range, the moisture-proof properties of the aerosol-generating article sheet can be improved, and aerosols can be smoothly formed when the sheet is heated, thereby achieving rich smoke delivery properties.

[0126] The filler according to the present invention can enhance the strength, durability and other mechanical properties of the aerosol-generated articles sheet.

[0127] In some embodiments of the present invention, the filler may be a non-tobacco substance. Specifically, the filler may include at least one of cellulose-based substances and cellulose derivatives. For example, the cellulose-based substance may refer to a network-type polysaccharide formed by overlapping straight chains of D-glucose monomers linked by β-glycosidic bonds. The cellulose derivative may refer to a substance based on the cellulose-based substance and subjected to at least one of the following: introduction of functional groups, oxidation, reduction, and substitution of atoms. For example, the cellulose derivative may be esterified cellulose or etherified cellulose. For example, the filler may include at least one of wood fiber, wheat fiber, and pulp (e.g., wood pulp). By using the aforementioned types of fillers, the mechanical properties of the aerosol-generating article sheet can be effectively enhanced.

[0128] In some embodiments of the present invention, the filler content can be 2% by weight or more and 8% by weight or less, based on the dry weight of the aerosol-generating article sheet. Specifically, the filler content can be 3% by weight or more or 5% by weight or less, or 7% by weight or less or 8% by weight or less, based on the dry weight of the aerosol-generating article sheet. In some embodiments, by adjusting the filler content to the range described above, the mechanical properties of the aerosol-generating article sheet, such as strength and durability, can be effectively enhanced.

[0129] In some embodiments of the invention, the flavoring can improve the quality and flavor of the tobacco substance. For example, the flavoring may vary depending on the type of tobacco substance.

[0130] In some non-limiting examples, the casing may include one or more of the following substances: natural plant fragrances (e.g., licorice, fenugreek, cinnamon, sage, herb, chamomile, rosemary, amacha, clove, lavender, cardamom, 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, carob pod powder (Saint John's bread), etc.; sugars (e.g., glucose, fructose, isomerized sugars, caramel, etc.); esters (e.g., isoamyl acetate, linalyl acetate, isoamyl propionate, and linalyl butyrate, etc.); ketones (e.g., menthone, ionone, damascenones, ethyl maltol). ; alcohols (e.g., geraniol, linalool, anethole, eugenol, etc.); aldehydes (e.g., vanillin, benzaldehyde, anisaldehyde, etc.); lactones (e.g., γ-undecalactone, γ-nonalactone, etc.); animal flavorings (e.g., musk, ambergris, civet, castoreum, etc.); and hydrocarbons (e.g., limonene, pinene, etc.).

[0131] For example, the dosage form of the flavoring is not particularly limited and can be solid, semi-solid, solution, or suspension. As an example, the solid form may include at least one of powder and granule, and the semi-solid form may include at least one of gel and paste.

[0132] In some embodiments of the invention, the emulsifier increases the flavor retention of aerosol-generating flakes by thoroughly mixing a fat-soluble fragrance with a water-soluble polysaccharide. Examples of emulsifiers may include lecithin, but the types of emulsifiers are not limited thereto.

[0133] In some embodiments of the present invention, the vitamin component may include at least one of vitamin A, vitamin B, vitamin C and vitamin E, but the types of vitamin components are not limited.

[0134] In some non-limiting examples, based on the dry weight of the aerosol-generating article sheet, the content of additives, which are not particularly defined, can be 0.1% by weight or more and 7% by weight or less. Specifically, based on 100 parts by weight (dry weight) of the aerosol-generating article sheet, the content of the additives can be 0.1 parts by weight or more, 0.5 parts by weight or more, 1.0 parts by weight or more, 2.0 parts by weight or more, 4.0 parts by weight or more, 5.0 parts by weight or more, or 6.0 parts by weight or more, and can be less than 0.5 parts by weight, less than 1.0 parts by weight, less than 2.0 parts by weight, less than 3.0 parts by weight, less than 4.0 parts by weight, less than 5.0 parts by weight, or less than 7.0 parts by weight.

[0135] Composition for sheet formation In some embodiments of the present invention, the aerosol-generating article sheet can be manufactured using the sheet-forming composition. In some embodiments of the present invention, the aerosol-generating article sheet may include a dried product of the sheet-forming composition.

[0136] In some embodiments of the present invention, the sheet-forming composition may include: a sheet-forming substance; and a solvent. Specifically, the sheet-forming substance may include a support, an aerosol-forming substance, a binder, and a tobacco substance. Depending on the need, the sheet-forming substance may also include one or more additives selected from the group consisting of active substances, loosening agents, moisture regulators, fillers, flavorings, emulsifiers, and vitamin components. In this case, the sheet-forming substance can be defined as including all components of the sheet-forming composition for aerosol-generating articles except for the solvent.

[0137] In some embodiments of the present invention, the drying temperature of the sheet-forming composition may be 80°C or higher and 150°C or lower, 85°C or higher and 145°C or lower, 90°C or higher and 140°C or lower, 95°C or higher and 135°C or lower, 100°C or higher and 130°C or lower, 105°C or higher and 120°C or lower, or 105°C or higher and 110°C or lower.

[0138] In some embodiments of the present invention, based on a sheet thickness of 200 μm, the drying time of the sheet-forming composition can 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.

[0139] In some non-limiting examples, by simultaneously adjusting the drying temperature and drying time of the sheet-forming composition to the range of the values, the moisture content in the sheet for aerosol-generated articles can be reduced to an appropriate level, thereby achieving aerosol-generated articles with excellent mechanical properties, which do not tear during winding and whose thermal intensity is adjusted.

[0140] In some non-limiting examples, the aerosol-generating article sheet-forming composition may include a solvent. The solvent may include a hydrophilic solvent, specifically, the solvent may include water.

[0141] In some examples, the solvent content relative to 100 parts by weight of the sheet-forming material can be 200 parts by weight or more and 1,000 parts by weight 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. When the solvent content is within the aforementioned range, the sheet-forming material can be uniformly mixed in the aerosol-generating article sheet-forming composition, which can improve the processability of the aerosol-generating article sheet-forming composition.

[0142] In some non-limiting examples, the sheet-forming substance may remain on the aerosol-generating article sheet. Specifically, the aerosol-generating article sheet is manufactured by drying the aerosol-generating article sheet-forming composition, and the sheet-forming substance may remain on the aerosol-generating article sheet. Accordingly, the aerosol-generating article sheet-forming composition and the aerosol-generating article sheet are the same in terms of the content ratio of the components included in the sheet-forming substance.

[0143] In some embodiments of the present invention, the viscosity of the sheet-forming composition at 37°C may be 16,000 cps or more and 40,000 cps or less, or 25,000 cps or more and 35,000 cps or less. For example, the viscosity of the aerosol-generating article sheet-forming composition can be measured using a viscometer (device name: Brookfield Viscometer DV2T-RV) with rotor #6 rotating at 20 rpm. By adjusting the viscosity of the aerosol-generating article sheet-forming composition to within the aforementioned range, sheets that are advantageous for processability, reduce sheet thickness deviations, and possess excellent mechanical properties can be achieved.

[0144] 2. Aerosol-generating articles and aerosol-generating devices In this specification, "upstream" or "upstream direction" can refer to the direction away from the smoker's mouth, and "downstream" or "downstream direction" can refer to the direction closer to the smoker's mouth. The terms upstream and downstream can be used to describe the relative positions of the components constituting the aerosol-generating article.

[0145] In this specification, "longitudinal direction" can refer to the direction corresponding to the longitudinal axis of the aerosol-generating article. Therefore, the length of each part of the aerosol-generating article can refer to the length defined along the longitudinal direction.

[0146] In this specification, the term "connection" means not only a direct structural connection between certain components, but also an indirect connection where other components are further sandwiched between components. Furthermore, in this specification, "connection" encompasses not only structural aspects, but also the electrical connection between one component and another. For example, the connection between a first constituent element and a second constituent element can mean that they are structurally directly or indirectly connected, or electrically connected.

[0147] According to another aspect of the present invention, an aerosol generating article is provided, comprising a sheet for aerosol generating articles in several embodiments. According to another aspect, the aerosol generating article includes the sheet for aerosol generating articles, which is heated by a heater of an aerosol generating apparatus described later to release components such as nicotine contained in the sheet, thereby delivering them to the user's mouth.

[0148] The structure of the present invention will now be described in more detail with reference to the accompanying drawings.

[0149] Figure 1 This is a perspective view showing an aerosol-generating article according to an embodiment of the present invention.

[0150] refer to Figure 1 In one embodiment of the present invention, the aerosol generating article 100 may include a first portion SEG1, a second portion SEG2, a third portion SEG3, and a fourth portion SEG4. Specifically, the first portion SEG1, the second portion SEG2, the third portion SEG3, and the fourth portion SEG4 may be arranged side by side along the length direction L of the aerosol generating article 100. More specifically, the second portion SEG2 may be sandwiched between the first portion SEG1 and the third portion SEG3, and the third portion SEG3 may be sandwiched between the second portion SEG2 and the fourth portion SEG4. For example, the thickness direction T may be a direction intersecting the length direction L of the aerosol generating article 100.

[0151] Figure 2 This is a schematic diagram illustrating an aerosol generating apparatus according to an embodiment of the present invention.

[0152] refer to Figure 2 The aerosol generating apparatus 300 according to the present invention may include a main body B, a battery 310, a control unit 320, a sensor 325, and a heater 330. For example, the aerosol generating apparatus 300 may also include other general or common components besides those shown in the figures. Specifically, the aerosol generating apparatus 300 may include: an output module (e.g., a motor, a display) configured to output the state of the device; an input module (e.g., a button) for receiving user input (e.g., device on / off, etc.); etc.

[0153] In this specification, the phrase "configured to..." may be used interchangeably with phrases such as "suitable for...", "having the capacity to...", "designed to...", "adapted to...", "made to...", or "capable of..." depending on some embodiments. The term "configured to..." does not necessarily mean "specifically designed to" in terms of hardware. Instead, in some embodiments, the phrase "a device configured as..." may mean that the device, together with other devices or components, is "capable of...".

[0154] refer to Figure 1 and Figure 2 According to the present invention, the main body B can be configured to form the appearance of the aerosol generating apparatus 300. Specifically, the main body B can be configured to provide a receiving space for inserting a portion of the aerosol generating article 100 of some of the embodiments described above.

[0155] The battery 310 according to the invention can be configured to supply power to operate the components of the aerosol generating apparatus 300. Specifically, the battery 310 can be configured to supply power to at least one of the control unit 320, the heater 330, and the sensor, which will be described later. For example, the battery 310 can also supply power to the induction coil.

[0156] The control unit 320 according to the present invention can be configured to control the overall operation of the aerosol generating apparatus 300. For example, the control unit 320 can be configured to control the operation of at least one of the battery 310, sensor 325, and heater 330. In some examples, the control unit 320 can also be configured to control the operation of the induction coil. In some alternative or additional examples, the control unit 320 can be configured to control the operation of a display, motor, etc., provided in the aerosol generating apparatus 300. In some alternative or additional examples, the control unit 320 can be configured to determine whether the aerosol generating apparatus is in an operable state by checking the state of each of the constituent elements of the aerosol generating apparatus.

[0157] The sensor 325 according to the invention may be configured to sense the temperature of the heater 330, the internal and / or external temperature of the body B, the user's puff, and whether the aerosol generating article 100 is inserted into at least one of the aforementioned receiving spaces. In some non-limiting examples, the sensor 325 may include one or more selected from the group consisting of a temperature sensor, a puff sensor, and an insertion sensing sensor.

[0158] The heater 330 according to the invention is configured to generate smoke and / or aerosols by heating at least one of the first portion SEG1 and the second portion SEG2 of an aerosol generating article 100 inserted into a receiving space. In some examples, the heater 330 may be configured to heat both a portion of the first portion SEG1 and a portion of the second portion SEG2 of the aerosol generating article 100. In some embodiments, the aerosol generating article 100 inserted into such a receiving space is heated by the heater 330 to generate aerosols. The generated aerosols can be inhaled through the user's mouth.

[0159] In some embodiments of the present invention, the heater 330 may be a resistance heater. Specifically, the heater 330 may include conductive traces, through which the heater 330 can be heated. Alternatively, the heater 330 may be electrically connected to the battery 310 to receive current and directly generate heat.

[0160] refer to Figure 1 In some embodiments of the present invention, the first portion SEG1 may include a first filter element. For example, the first filter element may include a paper filter or a hollow filter. For example, the hollow filter may include a herringbone or Y-shaped filter. In some alternative or additional examples, the hollow filter may contain cellulose acetate.

[0161] refer to Figure 1 and Figure 2In some embodiments of the present invention, the first filter element (e.g., a paper filter) may include a first sub-aerosol forming material that is the same as or different from the aerosol forming material included in the aerosol generating article sheet described above. For example, the first sub-aerosol forming material may be impregnated in the first filter element (e.g., a paper filter). The aerosol generated by heating the first sub-aerosol forming material can effectively transport the aerosol generated in the aerosol generating article sheet included in the second part SEG2 downstream. In some non-limiting examples, the first sub-aerosol forming material may include one or more of the group consisting of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol.

[0162] In some embodiments of the invention, the first portion SEG1 may further include a first roll of paper configured to package the first filter element. In some non-limiting examples, the first roll of paper may include a conductive material, specifically, aluminum foil. In some examples, the first roll of paper may be electrically connected to the sensor 325 by including the aforementioned conductive material.

[0163] In some embodiments of the present invention, when the aerosol-generating article sheet is included in the second part SEG2, the aerosol-generating article sheet can be formed by crimping a single sub-sheet or multiple sub-sheets. Here, "crimping" can include one or more structures selected from the group consisting of embossed structures, intaglio structures, and perforated structures. Specifically, it can include a structure combining embossed and intaglio structures, and more specifically, it can refer to a structure having multiple folds.

[0164] In some embodiments of the invention, in the aerosol-generating article sheet included in the second part SEG2, a plurality of pleats may extend parallel to the longitudinal axis of the aerosol-generating article. In some embodiments, the plurality of pleats extending parallel to the longitudinal axis of the aerosol-generating article can provide the desired flow of aerosols generated as the aerosol-generating article sheet is heated, thereby achieving an appropriate level of suction resistance.

[0165] In some embodiments of the invention, the second part SEG2 may further include a second roll of paper configured to package the aerosol-generating articles of some of the embodiments described above. In some non-limiting examples, the second roll of paper may include aluminum foil.

[0166] In some embodiments of the present invention, the content of the aerosol-generating article flakes included in the second part SEG2 can be 210 mg or more and 280 mg or less. Specifically, the content of the aerosol-generating article flakes included in the second part SEG2 can be 210 mg or more, 220 mg or more, or 230 mg or more, and can be 240 mg or less, 250 mg or less, 260 mg or less, 270 mg or less, or 280 mg or less. In some embodiments, by adjusting the content of the aerosol-generating article flakes to the above range, the taste performance and satisfaction can be further improved.

[0167] In some embodiments of the invention, the third part SEG3 may include a second filter element. For example, the third part SEG3 includes a second filter element, thereby enabling cooling of the aerosol conveyed from the front end of the aerosol-generating article and further enabling filtration. In some examples, the second filter element is not particularly limited and may be a hollow filter commonly used in the art, specifically a tubular filter comprising cellulose acetate.

[0168] In some embodiments of the invention, the third portion SEG3 may further include a third roll of paper configured to package the second filter element. In some non-limiting examples, the third roll of paper may include tubular rolls commonly used in the art.

[0169] In some embodiments of the invention, the fourth part SEG4 may include a third filter element for further filtering the aerosol received from the third part SEG3. In some embodiments, the third filter element is not particularly limited and may be a filter element commonly used in the art. Specifically, the third filter element may be an assembly (tow) of continuous filaments made of cellulose acetate.

[0170] In some embodiments of the invention, the fourth part, SEG4, may further include a fourth roll of paper configured to package the third filter element. In some non-limiting examples, the fourth roll of paper may include oil-resistant rigid paper with an oil-resistant surface treatment commonly used in the art; or polylactic acid (PLA) laminated paper.

[0171] Figure 3This is a schematic diagram illustrating an aerosol generating apparatus according to one embodiment of the present invention. Descriptions that are repeated above will be briefly explained or omitted. For example, the descriptions of parts three and four may be the same as those described above.

[0172] refer to Figure 1 and Figure 3 According to one embodiment of the present invention, the aerosol generating apparatus 300 may further include a cartridge 340, which is configured to include a second sub-aerosol forming substance having any one of the following states: liquid, solid, gaseous, or gel. Specifically, the cartridge 340 may be configured to convey the second sub-aerosol forming substance downstream of the aerosol generating article 100. For example, the second sub-aerosol forming substance may include a liquid composition. Specifically, the liquid composition may include the aforementioned aerosol forming substance.

[0173] refer to Figure 1 and Figure 3 In some embodiments of the present invention, heater 330 may be configured to heat the second part SEG2. In some examples, heater 330 may be configured not to heat the first part SEG1.

[0174] The smoke cartridge 340 according to the present invention may include: a storage section C0 configured to store a second sub-aerosol forming substance; and a sub-heater S_H configured to heat the second sub-aerosol forming substance stored in the storage section C0.

[0175] For example, the second aerosol-forming substance included in the storage section C0 of the cartridge 340 is heated by the sub-heater S_H, thereby generating an aerosol. The generated aerosol can be transported through the airflow channel CN ​​to the first part SEG1 of the aerosol generating article 100 to promote the downstream transport of nicotine and other components released from the aerosol generating article sheet 10 included in the second part SEG2.

[0176] In some examples, the storage unit C0 may include a liquid delivery unit impregnated with the aforementioned second aerosol-forming substance. In some non-limiting examples, the liquid delivery unit may include a core material such as cotton fiber, ceramic fiber, glass fiber, or porous ceramic.

[0177] In some embodiments of the invention, the first portion SEG1 may include a fourth filter element configured to move the aerosol supplied from the cartridge 340. For example, the fourth filter element may include a hollow filter element commonly used in this art, specifically a herringbone or Y-shaped filter element. In some non-limiting examples, the fourth filter element may include cellulose acetate.

[0178] In some embodiments of the present invention, the first part SEG1 includes aluminum foil as a filter roll, thereby enabling the identification of the aerosol generating article 100.

[0179] In some embodiments of the present invention, the second part SEG2 may include the aforementioned aerosol-generating article sheet 10. In some embodiments, the second part SEG2 includes an aerosol-generating article sheet, wherein components such as nicotine included in the aerosol-generating article sheet can be volatilized by the aerosol supplied from the cartridge 340 and delivered to the user's mouth.

[0180] Figure 4 This is a variation of a sheet for aerosol generation according to an embodiment of the present invention. Specifically, Figure 4 The sheet shown is a cross-sectional view of the sheet for generating aerosols, taken along the length direction L-axis of the aerosol generating article 100.

[0181] refer to Figure 4 According to one embodiment of the present invention, the aerosol-generating article sheet 10 can be a stack of two or more sub-sheets 10a. For example, the sub-sheets can be manufactured by cutting a single aerosol-generating article sheet.

[0182] For example, the total number of the sub-sheets 10a is not particularly limited; specifically, it can be more than 50 and less than 200.

[0183] According to one embodiment of the invention, at least one of the two or more sub-sheets 10a may include a curled structure; specifically, all sub-sheets may include a curled structure. According to one embodiment of the invention, the curled structure in all sub-sheets allows for more efficient delivery of aerosols and nicotine or nicotine salts generated in the aerosol-generating article sheet 10.

[0184] For example, the thickness of the sub-sheet 10a is not particularly limited. Specifically, it can be 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 can be a direction intersecting the length direction L of the aerosol generating article 100, specifically, it can be a direction perpendicular to the length direction L of the aerosol generating article 100.

[0185] Implementation form of the invention The following describes in detail the embodiments of the present invention so that those skilled in the art can easily implement the present invention. However, this is only an example, and the scope of the present invention is not limited to the following.

[0186] In this specification, terms such as “about” or “substantially” refer to a reasonable amount of deviation modifying the term so that the final result does not change significantly. Such terms can be interpreted as including deviations of at least ±5% or at least ±10% based on the stated value, provided that the deviation does not alter the meaning of the term to invalidate it.

[0187] [Example of manufacturing preparation: Material preparation] A sheet for aerosol generation articles, which is described in Manufacturing Example 1 below, was manufactured using a material having the characteristics described in Table 1 below.

[0188] [Table 1]

[0189] [Manufacturing Example 1: Manufacturing of a thin sheet for aerosol-generating articles] After manufacturing a sheet-forming composition comprising a sheet-forming substance (completely dried sheet) having the composition described in Table 2 below and a solvent (water), the sheet is dried at about 100°C for about 15 minutes to produce a sheet for aerosol-generating articles with a moisture content of about 6% by weight.

[0190] [Experimental Example 1: Arithmetic Mean Roughness of Thin Sheets Used for Aerosol-Generated Materials] For the sheet specimen (width and length: 25cm × 25cm) of Manufacturing Example 1, the arithmetic mean roughness (R) of the sheet relative to the axial (MD: Machine Direction) direction was measured using a surface profilometer (equipment name: KLA-Tencor, D-300) according to ISO 4287 & 4288. a At this time, the test environment was controlled at approximately 23±2℃ and approximately 45±5% RH.

[0191] [Experimental Example 2: Pressure Drop of the Medium Rod (Second Part)] A leak-proof media rod (circumference: approximately 22 mm, length: approximately 72 mm) was manufactured by wrapping 1,380 mg of aerosol-generating material in a sheet of rolled paper. Under conditions of 23 ± 3 °C, 60 ± 5% RH, and a volumetric flow rate of approximately 17.5 mL / s at the outlet end of the media rod, the media rod was inserted into a pressure drop measuring instrument (KARDIEN's BWSPHT physical measurement instrument) according to CORESTA CRM41, and the pressure drop of the media rod was measured. The results are shown in Table 2 below. At this point, the appropriate pressure drop of the media rod is above 70 mm H2O and below 120 mm H2O.

[0192] [Experimental Example 3: Method for Calculating the Grammage of Thin Sheets Used in Aerosol-Generating Items] After preparing the aerosol-generating article test piece (width and length: 25cm × 25cm) of the manufacturing example 1, the weight per unit area was measured using a balance, and the gram weight was calculated.

[0193] [Table 2]

[0194] Referring to Table 2 above, compared with Comparative Examples 1 and 2, in Examples 1 to 4, by adjusting the arithmetic mean roughness of the sheet to 1.3 μm or more and 4.0 μm or less, the pressure drop of the dielectric rod was controlled at an appropriate level.

[0195] Conversely, in Comparative Example 1, the arithmetic mean roughness of the sheet was adjusted to be less than 1.3 μm, resulting in the voltage drop of the dielectric rod falling below the appropriate range. Furthermore, in Comparative Example 2, the arithmetic mean roughness of the sheet was adjusted to be greater than 4.0 μm, resulting in the voltage drop of the dielectric rod falling above the appropriate range.

[0196] Unless explicitly stated otherwise, the features described in one of the above embodiments may be combined with other embodiments. Furthermore, while preferred embodiments of the present invention have been described in detail above, the scope of the invention is not limited thereto. Various modifications and alterations made by those skilled in the art using the basic concepts defined in the claims also fall within the scope of the invention.

[0197] [Explanation of reference numerals in the attached figures] 10: Thin sheets for aerosol-generating materials 100: Aerosol-generating items SEG1: Part One SEG2: Part Two SEG3: Part Three SEG4: Part Four 300: Aerosol Generating Device B: Main Body 310: Battery 320: Control Department 325: Sensor 330: Heater 340: Smoke cartridge C0: Storage Department S_H: Sub-heater L: Length direction T: Thickness direction

Claims

1. A sheet for aerosol-generating articles, comprising: Support structure; Aerosol-forming substances; Adhesives; as well as Tobacco substances, The arithmetic average roughness (Ra) of the aerosol-generating article sheet is above 1.3 μm and below 4.0 μm.

2. The sheet for aerosol generation articles according to claim 1, wherein, The median particle size (D) of the tobacco material 50 The size is above 20μm and below 110μm.

3. The sheet for aerosol generation articles according to claim 1, wherein, Based on the dry weight of the aerosol-generating article sheet, the content of the tobacco substance is 15% by weight or more and 40% by weight or less.

4. The sheet for aerosol generation articles according to claim 1, wherein, The tobacco substance includes: Choose one or more from the group consisting of Flue-cured, Burley, Oriental, Cigar, Latakia, Perique, and Cavendish.

5. The sheet for aerosol generation articles according to claim 1, wherein, With a medium rod containing 1380 mg of the aerosol-generating article having a length of 72 mm and a circumference of 22 mm, the pressure drop of the medium rod is above 70 mm H2O and below 120 mm H2O.

6. The sheet for aerosol generation articles according to claim 1, wherein, The aerosol-generating material sheet has a weight of 150 g / m³. 2 Above and 250g / m 2 the following.

7. The sheet for aerosol generation according to claim 1, further comprising: The moisture content, relative to 100 parts by weight of the aerosol-generating article sheet, is 1 part by weight or more and 12 parts by weight or less.

8. The sheet for aerosol generation articles according to claim 1, further comprising: The additive is selected from one or more of the following groups: active substances, leavening agents, moisture regulators, fillers, fragrances, emulsifiers, and vitamin components.

9. The sheet for aerosol-generating articles according to claim 8, wherein, The moisture regulator comprises a compound represented by the following chemical formula 1: [Chemical Formula 1] In the chemical formula 1: R1 is hydrogen or hydroxyl. R2 to R4 are each independently a carboxyl group (-CO2H); ;or , R 11 It is a straight-chain or branched alkyl group having 1 to 3 carbon atoms, and R 12 It is a straight-chain or branched alkyl group having 3 to 12 carbon atoms.

10. An aerosol-generating article comprising a sheet for an aerosol-generating article according to claim 1.

11. The aerosol-generating article according to claim 10, wherein, The aerosol-generating articles include: Part One; The second part is arranged on one side of the first part; The third part is arranged on one side of the second part; and The fourth part is arranged on one side of the third part. The second part includes the sheet for the aerosol-generating article.

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