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

Abstract

Provided according to one aspect is a sheet for an aerosol-generating article, which comprises a support, an aerosol-forming material, a binder, and a tobacco material, and has an arithmetic average roughness of 1.3 μm to 4.0 μm.

Description

Sheet for aerosol product and aerosol product containing the same

[0001] The present invention (Disclosure) relates to a sheet for an aerosol product, and more specifically, to a sheet for an aerosol product and an aerosol product comprising the same.

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

[0003] [Prior Art Literature]

[0004] [Patent Literature]

[0005] Korean Published Patent Application 10-2022-0008979 (Published Jan. 24, 2022)

[0006] According to one aspect, the invention provides a sheet for an aerosol product capable of effectively controlling the pressure drop of a medium load.

[0007] According to another aspect, an aerosol product comprising a sheet for the aerosol product described above is provided.

[0008] The objects of the present invention are not limited to those mentioned above, and other unmentioned objects and advantages of the present invention may be understood from the following description and will be more clearly understood by the embodiments of the present invention. Furthermore, it will be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof described in the specification.

[0009] According to a first aspect of the present invention, the invention comprises a support; an aerosol-forming material; a binder; and a tobacco material, wherein the arithmetic average roughness (R) aA sheet for an aerosol product is provided, having a thickness of 1.3 μm or more and 4.0 μm or less.

[0010] According to the second aspect of the present invention, in the first aspect, the median particle size (D) of the tobacco substance 50 ) can be 20 µm or more and 110 µm or less.

[0011] According to a third aspect of the present invention, in 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 the aerosol product.

[0012] According to the fourth aspect of the present invention, in any one of the first to third aspects, the tobacco material may include one or more selected from the group consisting of Flue-cured, Burley, Oriental, Cigar, Latakia, Perique, and Cavendish.

[0013] According to the fifth aspect of the present invention, in any one of the first to fourth aspects, under the condition that the length of the medium rod containing 1,380 mg of the sheet for the aerosol product is 72 mm and the circumference is 22 mm, the pressure drop of the medium rod may be 70 mm H2O or more and 120 mm H2O or less.

[0014] According to the sixth aspect of the present invention, in any one of the first to fifth aspects, the basis weight of the sheet for the aerosol product is 150 g / m² 2 250 g / m² or more 2 It may be less than.

[0015] According to the seventh aspect of the present invention, in any one of the first to sixth aspects, the sheet for the aerosol product further comprises moisture, and the content of the moisture may be 1 part by weight or more and 12 parts by weight or less per 100 parts by weight of the sheet for the aerosol product.

[0016] According to the eighth aspect of the present invention, in any one of the first to seventh aspects, the sheet for the aerosol product may further include one or more additives selected from the group consisting of an active substance, a bulking agent, a moisture regulator, a filler, a casing, an emulsifier, and a vitamin component.

[0017] According to the ninth aspect of the present invention, the moisture regulator in the eighth aspect may include a compound represented by the following chemical formula 1.

[0018] [Chemical Formula 1]

[0019]

[0020] In the above chemical formula 1, R1 is hydrogen or a hydroxyl group, and R2 to R4 are each independently a carboxyl group (-CO2H); ; or and R 11 is a straight-chain or branched-chain alkyl group having 1 to 3 carbon atoms, and R 12 is a straight-chain or branched-chain alkyl group having 3 to 12 carbon atoms.

[0021] According to the 10th aspect of the present invention, an aerosol product is provided comprising a sheet for an aerosol product according to any one of the 1st to 9th aspects.

[0022] According to the 11th aspect of the present invention, in the 10th aspect, the aerosol product comprises a first part, a second part disposed on one side of the first part, a third part disposed on one side of the second part; and a fourth part disposed on one side of the third part, wherein the second part may comprise a sheet for the aerosol product.

[0023] The means for solving the above problem are not all of the features of the present invention and may be combined with some embodiments of this specification. Various features of the present invention and the advantages and effects derived therefrom may be understood in more detail by referring to the specific description below.

[0024] According to one aspect, a sheet for an aerosol product that can effectively control the pressure drop of a medium load can be implemented.

[0025] In addition to the effects described above, specific effects of the present invention are described together with the following explanation of specific details for implementing the invention. Furthermore, the effects of the present invention are not limited to those mentioned above and can be easily realized by means and combinations thereof described in the specification.

[0026] FIG. 1 is a perspective view showing an aerosol product according to some embodiments of the present invention.

[0027] FIG. 2 is a schematic diagram showing an aerosol generating device according to one embodiment of the present invention.

[0028] FIG. 3 is a schematic diagram showing an aerosol generating device according to one embodiment of the present invention.

[0029] FIG. 4 is a modified example of a sheet for an aerosol product according to one embodiment of the present invention.

[0030] In this specification, singular expressions include plural expressions unless the context clearly indicates otherwise.

[0031] In this specification, the "weight-average molecular weight" of a compound can be calculated using the molecular weight and molecular weight distribution of the compound. In this case, the weight-average molecular weight can be calculated using methods and devices used in the art. For example, depending on the properties of the compound, it can be analyzed using a Gel Permeation Chromatography (GPC) device or a Gel Filtration Chromatography (GFC) device. For example, in the case of the GPC analysis 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. After filtering the sample sample and a standard sample (polystyrene) through a filter (pore size 0.45 μm), the sample is injected into a GPC injector, and the molecular weight and molecular weight distribution of the compound can be obtained by comparing the elution time of the sample sample with the calibration curve of the standard sample. In this case, the Infinity II 1260 (Agilient) can be used as the measuring instrument, and the flow rate can be set to 1.00 mL / min and the column temperature to 40.0 ℃. Meanwhile, for the GFC analysis method, the column can be an Agilent 1200 Series HPLC system, the flow rate to 1 mL / min, the mobile phase to 0.02% sodium azide, the detector to ELSD (Evaporative light scattering detector, Altech), and the calibration curve to be obtained from pullulan.

[0032] In this specification, the dry weight of a sheet for an aerosol product is defined as the total weight of the sheet-forming material excluding water in the sheet-forming composition forming the sheet for an aerosol product. In some alternative or additional examples, the dry weight of the sheet for an aerosol product may mean the weight of the dried material from which moisture has been completely removed from the sheet for an aerosol product. In some alternative or additional examples, the sheet for an aerosol product may comprise a sheet-forming material and moisture. In some alternative or additional examples, the sheet-forming material may be the result of removing moisture contained in the sheet for an aerosol product through a complete drying process. In some alternative or additional examples, the content of the composition set based on the dry weight of the sheet for an aerosol product may be the content of the composition set based on 100 parts by weight of the sheet-forming material (unit: parts by weight).

[0033] According to one aspect of the present invention, the invention comprises a support, an aerosol-forming material, a binder, and a tobacco material, wherein the arithmetic average roughness (R aA sheet for an aerosol product is provided, wherein the arithmetic mean roughness is 1.3 μm or more and 4.0 μm or less. According to one aspect, if the arithmetic mean roughness of the sheet for the aerosol product is less than the numerical range, a problem may arise in which the pressure drop of a medium rod containing the sheet for the aerosol product becomes excessively low, and if it exceeds the numerical range, a problem may arise in which the pressure drop of the medium rod becomes excessively high. Alternatively, the pressure drop may be substituted for suction resistance in the art. For example, if the arithmetic mean roughness of the sheet for the aerosol product is less than the numerical range, a problem may arise in which the suction resistance of a medium rod containing the sheet for the aerosol product becomes excessively low, and if the arithmetic mean roughness of the sheet for the aerosol product exceeds the numerical range, a problem may arise in which the suction resistance of a medium rod becomes excessively high. That is, by adjusting the arithmetic mean roughness of the sheet for the aerosol product to the above range, the pressure drop or suction resistance of the medium load can be effectively controlled.

[0034] 1. Sheets for aerosol products

[0035] Support

[0036] The support according to the present invention may be a component that forms the basic framework of the sheet for the aerosol product. If necessary, the support may also act as a carrier that supports the active substance described below, and may be a factor that affects the persistence of the active substance.

[0037] In this specification, "insoluble" may mean that the amount of solute dissolved in 100g of water at 20°C is 10g or less, 5g or less, 1g or less, 0.1g or less, 0.01g or less, 0.001g or less, 0.0001g or less, or 0g. The insoluble porous material described below may have the above range of solubility with respect to water.

[0038] In some embodiments of the present invention, the support may comprise an insoluble porous material. The insoluble porous material may reversibly adsorb aerosol-forming substances, etc. That is, when storing the sheet for the aerosol product, the volatilization of components such as aerosol-forming substances from the sheet for the aerosol product can be minimized. Furthermore, when the sheet for the aerosol product is heated, components such as aerosol-forming substances adsorbed on the insoluble porous material may be desorbed from the insoluble porous material and aerosolized.

[0039] In some embodiments of the present invention, the water-insoluble porous material may be any material used in the art without limitation, provided that it is capable of reversibly adsorbing components such as aerosol-forming materials. For example, the water-insoluble porous material may include at least one of a cellulose-based material and a cellulose derivative material. For example, the cellulose-based material may refer to a lattice-type polysaccharide in which linear chains of D-glucose monomers connected by β-glycosidic bonds are superimposed. The cellulose derivative material may refer to a material having the cellulose-based material as a base matrix, to which at least one of the introduction of functional groups, oxidation, reduction, and substitution of atoms is applied. For example, the cellulose derivative material may be esterified cellulose or etherified cellulose. Specifically, the water-insoluble porous material may include microcrystalline cellulose (MCC), but the type of water-insoluble porous material is not limited thereto.

[0040] In this specification, density is defined as true density or bulk density. Here, true density refers to the mass per unit volume, taking into account only the volume occupied by the material itself. On the other hand, bulk density refers to the mass per total volume, including the particles, the voids within the particles, and the voids between the particles. For example, true density can be measured using a gas pycnometer. For example, bulk density can be measured in accordance with ASTM D7481.

[0041] For example, the above support has a density of 0.1 g / cm³ 3 Above 0.4 g / cm³ 3 It may include microcrystalline cellulose as described below. For example, the density may refer to bulk density. By including microcrystalline cellulose in the support, the thickness and basis weight of the sheet for aerosol products can be achieved at an appropriate level, and the mechanical properties of the sheet for aerosol products can be improved.

[0042] For example, the microcrystalline cellulose may be a factor affecting the tensile strength and elongation of the sheet for the aerosol product. By including microcrystalline cellulose in the support, the thickness and basis weight of the sheet for the aerosol product can be controlled to an appropriate level, and at the same time, the mechanical properties of the sheet for the aerosol product can be improved.

[0043] In some embodiments of the present invention, the support comprises microcrystalline cellulose, thereby further improving the mechanical properties and fragrance persistence of the sheet.

[0044] In some embodiments of the present invention, the microcrystalline cellulose may be prepared by chemically treating a cellulose raw material (e.g., wood pulp or cotton). Specifically, the microcrystalline cellulose may be prepared by acid hydrolyzing wood pulp or cotton at a temperature of about 100°C or higher and 140°C or lower. For example, an inorganic acid may be used for 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 through an acid hydrolysis reaction, anions derived from the inorganic acid (e.g., Cl - , Br - , or SO4 2- A small amount of ) may remain. For example, the content of anions derived from the inorganic acid may be 0.03 wt% or less, 0.02 wt% or less, or 0.01 wt% or less based on the total weight of the microcrystalline cellulose, or may be greater than 0 wt%. For example, the content of anions derived from the inorganic acid may be analyzed by ion chromatography.

[0045] In some embodiments of the present invention, the support may include anions derived from inorganic acids. For example, the support may include anions derived from inorganic acids because it is manufactured through an acid hydrolysis reaction.

[0046] 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 according to the Segal method using the intensity of a peak indicating a crystalline region and the intensity of a peak indicating an amorphous region by X-ray diffraction (XRD) analysis. For example, the XRD analysis can be measured under conditions of Cu Kα (λ = 1.5406 Å), a diffraction angle of 5-40°, and a scan speed of 1˚ / min.

[0047] In some non-limiting examples, the degree of crystallization of the above support may be 30% or more and 85% or less.

[0048] Meanwhile, the degree of polymerization of the above support can be measured using methods and equipment used in the industry. For example, the degree of polymerization of the support can be measured using a viscometer degree of polymerization calculation method. After dissolving the freeze-dried electron beam-treated object in a 0.5 M CED (copper ethylene diamine) solution, the viscosity can be measured using a capillary viscometer to determine the intrinsic viscosity. At this time, the intrinsic viscosity [η] can be verified as [η]xc (c, concentration, g / 100 mL) by referring to ASTM D4243-99. The degree of polymerization can be measured using the formula DP = [η]x190.

[0049] For example, the degree of polymerization of the support may 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 having a degree of polymerization of 50 or more and 350 or less.

[0050] In this specification, the median particle size (D 50) refers to the particle size at the 50% reference of the volume-cumulative particle size distribution of the powder to be measured. The above D 50 The particle size can be measured by dispersing the powder to be measured in a dispersion medium, introducing it into a commercially available laser diffraction particle size measuring device (e.g., Microtrac S3500) to obtain a volume-cumulative particle size distribution graph, and then determining the particle size corresponding to 50% of the volume-cumulative amount.

[0051] In some embodiments of the present invention, the median particle size (D) of the support 50 ) may be 10 μm or more and 80 μm or less. Specifically, the median particle size (D) of the support 50 The median particle size of the support may 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, and may be 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 above range, the strength and durability of the sheet for the aerosol product may be further improved. If necessary, by adjusting the median particle size of the support to the aforementioned range, the amount of active material loaded in the support can be effectively controlled, and the persistence of the active material can be improved simultaneously.

[0052] In some embodiments of the present invention, the content of the support may be 15% by weight or more and 40% by weight or less based on the dry weight of the sheet for the aerosol product. Specifically, based on the dry weight of the sheet for the aerosol product, the content of the support may 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 may 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 controlling the content of the support to the above range, the mechanical properties of the sheet for the aerosol product are secured while minimizing the volatilization of aerosol-forming materials, etc., and the strength and durability of the sheet for the aerosol product can be effectively improved. In addition, an aerosol can be effectively generated when the sheet for the aerosol product is heated.

[0053] Aerosol-forming substances

[0054] In this specification, "aerosol" may be defined as a mixture in which fine solid particles or liquid droplets are mixed with air or other gases to form a suspension.

[0055] According to one aspect of the present invention, a sheet for an aerosol product comprises an aerosol-forming material that generates an aerosol when the aerosol product is inserted into the interior of an aerosol generating device and heated.

[0056] In some embodiments of the present invention, based on the dry weight of the sheet for the aerosol product, the content of the aerosol-forming substance may be 10% by weight or more and 30% by weight or less. Specifically, based on the dry weight of the sheet for the aerosol product, the content of the aerosol-forming substance may be 10% by weight or more, 15% by weight or more, or 20% by weight or more, and 23% by weight or less, 27% by weight or less, or 30% by weight or less. In some embodiments, by controlling the content of the aerosol-forming substance to the above range, when the sheet for the aerosol product is heated, sufficient aerosol is generated to promote the migration of the active substance.

[0057] In some non-limiting examples, the aerosol-forming material 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.

[0058] bookbinder

[0059] The binder according to the present invention can control the mechanical properties of the sheet by binding the components together within the sheet for the aerosol product.

[0060] In some embodiments of the present invention, the binder may include a binder material that provides a polymer matrix capable of forming a sheet shape and being flexible. Specifically, the binder material may include one or more selected from the group consisting of a cellulose-based polymer; gums such as guar gum, xanthan gum, or gum arabic; and agar, pectin, and alginate.

[0061] For example, the cellulose-based 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 (hydroxyethyl cellulose, HEC), hydroxypropyl cellulose (HPC), hydroxyethyl methylcellulose (HEMC), and hydroxypropyl methyl cellulose (HPMC).

[0062] In some embodiments of the present invention, the weight-average molecular weight of the binder material may be 10,000 g / mol or more and 2,000,000 g / mol or less. Specifically, the weight-average molecular weight of the binder material may be 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, and 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, the weight-average molecular weight of the binder material is controlled to the above range, thereby allowing the aerosol-forming material, etc., to be stably present within the sheet for the aerosol product. Through this, the smoking properties of the sheet for the aerosol product can be further improved.

[0063] In some examples, the weight-average molecular weight of the above-mentioned cellulose-based polymer may be 10,000 g / mol or more and 700,000 g / mol or less.

[0064] In some examples, the weight-average molecular weight of the above gums may be 1,000,000 g / mol or more and 2,000,000 g / mol or less.

[0065] In some embodiments of the present invention, the content of the binder may be 3% by weight or more and 30% by weight or less based on the dry weight of the sheet for the aerosol product. Specifically, based on the dry weight of the sheet for the aerosol product, the content of the binder may be 3% by weight or more, 5% by weight or more, 7.5% by weight or more, or 9% by weight or more, and may 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 controlling the content of the binder to the above range, the mechanical properties of the sheet for the aerosol product can be secured, while the aerosol forming material, etc., can be stably retained within the sheet for the aerosol product.

[0066] In some embodiments of the present invention, the binder may include at least a first binder, and specifically may include a first binder and a second binder having different viscosities. The binder having a defined viscosity may be a binder solution (or binder dispersion) comprising a solid component of a binder and a solvent (or dispersion medium) used when preparing a sheet-forming composition.

[0067] In some embodiments of the present invention, the viscosity of the first binder may be 100 mPa·s or more and 500 mPa·s or less. Specifically, under conditions of 25°C, the viscosity of the first binder may 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 binder may be measured at 25°C, a concentration of 2 wt%, a Brookfield LVDV-1 viscometer spindle No. 2, and a rotational speed of 30 RPM.

[0068] In some embodiments of the present invention, the binder may be composed of the first binder. In some embodiments, by composing the binder with the first binder, the density of the sheet for the aerosol product may be increased and the arithmetic mean roughness of the sheet may be lowered. The density of the sheet and the arithmetic mean roughness of the sheet may each independently affect the pressure drop of the medium rod. In this case, the pressure drop of the medium rod may be increased by adjusting the viscosity of the first binder to the range described above.

[0069] In some embodiments of the present invention, the viscosity of the second binder may be 800 mPa·s or more and 2,000 mPa·s or less. Specifically, under conditions of 25°C, the viscosity of the second binder may 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 less, or 1,400 mPa·s or more and 2,000 mPa·s or less. More specifically, the viscosity of the second binder may be measured at 25°C, a concentration of 1 wt%, a Brookfield LVT viscometer spindle No. 3, and a rotational speed of 60 RPM.

[0070] For example, the first binder may include a cellulose-based polymer satisfying the viscosity condition, specifically carboxymethyl cellulose. Additionally, the second binder may include a cellulose-based polymer satisfying the viscosity condition, specifically carboxymethyl cellulose.

[0071] For example, the viscosity of the binder can be correlated with the weight-average molecular weight of the binder and the Mark-Houwink equation. Specifically, as the weight-average molecular weight of the binder increases, the viscosity of the binder may increase, and as the weight-average molecular weight of the binder decreases, the viscosity of the binder may decrease.

[0072] In some embodiments of the present invention, the binder may comprise two or more binders having different weight-average molecular weights. Specifically, the binder may comprise a first binder and a second binder that is different from the first binder. For example, the first binder and the second binder may comprise a cellulose-based polymer. For example, the weight-average molecular weight of the first binder may differ from the weight-average molecular weight of the second binder, and specifically, may be lower than the weight-average molecular weight of the second binder. Specifically, by including two or more binders having different weight-average molecular weights, 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.

[0073] In some embodiments of the present invention, the content of the first binder may be 1 weight% or more and 15 weight% or less based on the dry weight of the sheet for the aerosol product. Specifically, based on the dry weight of the sheet for the aerosol product, the content of the first binder may be 3 weight% or more, 5 weight% or more, or 7 weight% or more, and 10 weight% or less, 13 weight% or less, or 15 weight% or less. In some embodiments, by adjusting the content of the first binder to the above range, 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.

[0074] In some embodiments of the present invention, the content of the second binder may be 1 weight% or more and 7 weight% or less based on the dry weight of the sheet for the aerosol product. Specifically, based on the dry weight of the sheet for the aerosol product, the content of the second binder may be 1 weight% or more, 3 weight% or more, 5 weight% or more, or 7 weight% or more, and may be 1 weight% or less, 3 weight% or less, 5 weight% or less, or 7 weight% or less. In some embodiments, by adjusting the content of the second binder to the above range, 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.

[0075] In some embodiments of the present invention, the weight ratio of the second binder and the first binder (second binder: first binder) may be 1:1 to 1:4. Specifically, the weight ratio of the second binder and the first binder may be 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 binder and the first binder to the above range, the sheet-forming composition may have a viscosity suitable for sheet formation. Additionally, the mechanical properties of the manufactured sheet may be effectively improved. Furthermore, the sheet-forming composition may have a more homogeneous composition and may achieve improved viscosity stability. For example, the weight ratio of the first and second binders may be the weight ratio between the solids of the binder solution (or binder dispersion) described above.

[0076] Tobacco substances

[0077] In this specification, the term "tobacco material" is not particularly limited and may include tobacco raw materials such as tobacco leaves, tobacco stems, etc., and materials processed therefrom. For example, the tobacco material may include tobacco leaves; puffed tobacco veins; tobacco cut leaves such as leaf tobacco cut leaves, plate leaf cut leaves, etc.; or tobacco sheets such as plate leaf sheets; granular tobacco; or liquid tobacco compositions; etc. For example, the tobacco material may be leaf tobacco powder.

[0078] The tobacco material according to the present invention may include nicotine or a salt thereof as an active ingredient. The nicotine or its salt may be transferred to the user's mouth by the aerosol-forming material when the sheet for the aerosol product is heated. Accordingly, the tobacco material may be a factor controlling the smoking taste. In addition, the tobacco material may be a factor controlling the basis weight and thickness of the sheet for the aerosol product by filling the empty spaces between supports to homogenize the density.

[0079] In some embodiments of the present invention, the tobacco material may include one or more selected from the group consisting of Flue-cured, Burley, Oriental, Cigar, Latakia, Perique, and Cavendish. In some embodiments, by including one or more selected from the group consisting of Flue-cured, Burley, Oriental, Cigar, Latakia, Perique, and Cavendish, the smoking taste of the aerosol product can be effectively controlled to improve the balance of flavor.

[0080] For example, the above yellow, Burley, and Oriental varieties can be distinguished according to the curing method.

[0081] Meanwhile, the content of nicotine and total sugar may vary depending on the type of tobacco substance. The content of nicotine and total sugar may be factors affecting the taste of aerosol products.

[0082] In some embodiments of the present invention, the total sugar content based on the total weight of the sheet for the aerosol product may be 5% by weight or more and 10% by weight or less. Specifically, based on the total weight of the sheet for the aerosol product, the total sugar content may 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, and may 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 may be measured by the Anthrone analysis method or gas chromatography-mass spectrometry (GC-MS). Specifically, by controlling the total sugar content to the range described above, the savory intensity can be effectively controlled to further improve the balance of flavors.

[0083] In some embodiments of the present invention, the nicotine content based on the total weight of the sheet for the aerosol product may be 0.5 wt% or more and 2.0 wt% or less. Specifically, based on the total weight of the sheet for the aerosol product, the nicotine content may be 0.5 wt% or more, 0.75 wt% or more, 0.8 wt% or more, 0.81 wt% or more, or 0.9 wt% or more, and may be 1.0 wt% or less, 1.5 wt% or less, 1.7 wt% or less, or 2.0 wt% or less. For example, the nicotine content may be measured by the analysis method of CORESTA CRM 85. Specifically, by adjusting the nicotine content to the range described above, the smoking intensity can be effectively controlled to further improve the balance of flavor.

[0084] In some embodiments of the present invention, the median particle size (D) of the tobacco material 50 ) may be 20 µm or more and 110 µm or less. Specifically, the median particle size (D) of the above tobacco substance 50 The median particle size of the tobacco material may be 25 μm or more, 50 μm or more, 75 μm or more, or 100 μm or more, and may be 50 μm or less, 75 μm or less, or 100 μm or less. In some embodiments, by controlling the median particle size of the tobacco material to the above range, the tobacco material can be uniformly dispersed within the sheet for the aerosol product, and at the same time, the thickness and basis weight of the sheet for the aerosol product can be achieved at an appropriate level. In addition, by controlling the median particle size of the tobacco material to the above range, the surface roughness of the sheet for the aerosol product can be controlled, thereby controlling the pressure drop of the medium rod to an appropriate level.

[0085] In some embodiments of the present invention, based on the dry weight of the sheet for the aerosol product, the content of the tobacco substance may be 15% by weight or more and 40% by weight or less. Specifically, based on the dry weight of the sheet for the aerosol product, the content of the tobacco substance may 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 may be 30% by weight or less, 35% by weight or less, or 40% by weight or less. In some embodiments, by controlling the content of the tobacco substance to the above range, the density can be uniformly controlled by filling the empty spaces between supports. Accordingly, the basis weight and thickness of the sheet for the aerosol product can be effectively controlled.

[0086] In some embodiments of the present invention, based on the dry weight of the sheet for the aerosol product, the content of the yellow species may be 21% by weight or more and 29% by weight or less. Specifically, based on the dry weight of the sheet for the aerosol product, the content of the yellow species may be 21% by weight or more, 23% by weight or more, or 25% by weight or more, and may be 27% by weight or less or 29% by weight or less. By adjusting the content of the yellow species to the above-described range, the savory intensity can be effectively controlled to further improve the balance of flavors.

[0087] In some embodiments of the present invention, based on the dry weight of the sheet for the aerosol product, the content of any one selected from the group consisting of Burley, Oriental, and combinations thereof (hereinafter referred to as "special leaf") may be 1 weight% or more and 11 weight% or less. Specifically, based on the dry weight of the sheet for the aerosol product, the content of the special leaf may be independently 1 weight% or more, or 2.5 weight% or more, and 5 weight% or less, or 7 weight% or less. In some embodiments, by adjusting the content of the special leaf to the above-described range, the savory intensity can be effectively controlled to further improve the balance of flavor.

[0088] In some embodiments of the present invention, based on the dry weight of the sheet for the aerosol product, the content of the Burley species may be 1% by weight or more and 4% by weight or less, and the content of the Oriental species may be 1% by weight or more and 4% by weight or less. Specifically, based on the dry weight of the sheet for the aerosol product, the content of the Burley species may be 2% by weight or more or 2.5% by weight or more, 3.0% by weight or less, or 3.5% by weight or less, and the content of the Oriental species may be 2% by weight or more or 2.5% by weight or more, 3.0% by weight or less, or 3.5% by weight or less. In some embodiments, by adjusting the content of the special leaves to the range described above, the savory intensity can be effectively controlled to further improve the balance of flavor.

[0089] Physical properties

[0090] Arithmetic Average Roughness (R a ) refers to the average of the absolute values ​​of all height deviations of the sheet surface relative to the average line in a cross-sectional profile measuring height changes on the sheet surface.

[0091] In some embodiments of the present invention, the arithmetic average roughness (R) of the sheet for the aerosol product is aThe arithmetic mean roughness is 1.3 μm or more and 4.0 μm or less. Specifically, the arithmetic mean roughness of the sheet for the aerosol product may 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, and may be 1.6 μm or less, 1.9 μm or less, 2.3 μm or less, 2.6 μm or less, 3.0 μm or less, or 3.4 μm or less. Specifically, the arithmetic mean roughness of the sheet for the aerosol product may be a factor affecting the pressure drop of a medium rod containing the sheet for the aerosol product. In some embodiments, the pressure drop of the medium rod can be effectively controlled by adjusting the arithmetic mean roughness of the sheet for the aerosol product to the above range. In some non-limiting examples, the arithmetic mean roughness of the sheet for the aerosol product above can be measured using a surface profiler (equipment name: KLA-Tencor, D-300) in accordance with ISO 4287 & 4288.

[0092] In some embodiments of the present invention, the sheet for the aerosol product 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 or different from each other. For example, the arithmetic mean roughness of the first surface and the second surface may each be independently within the range described above.

[0093] Meanwhile, pressure drop refers to the difference in pressure loss occurring between the inlet and outlet of the medium load under conditions where the volumetric flow rate is approximately 17.5 mL / s. For example, the pressure drop may vary depending on the median particle size of the tobacco material, the type of binder, the physical properties (viscosity) of the binder, the content of the binder, and the arithmetic mean roughness of the sheet for the aerosol product.

[0094] In some embodiments of the present invention, under conditions where the length of a medium rod containing 1,380 mg of a sheet for an aerosol product is 72 mm and the circumference is 22 mm, the pressure drop of the medium rod may be 70 mm H2O or more and 120 mm H2O or less. Specifically, the pressure drop of the medium rod may be 70 mm H2O or more, 73 mm H2O or more, 77 mm H2O or more, 79 mm H2O or more, or 88 mm H2O or more, and may be 75 mm H2O or less, 77 mm H2O or less, 79 mm H2O or less, 80 mm H2O or less, 88 mm H2O or less, 90 mm H2O or less, 104 mm H2O or less, or 120 mm H2O or less. In some examples, the pressure drop of the medium rod may be 70 mm H2O or greater and 90 mm H2O or less. In some embodiments, by controlling the pressure drop of the medium rod to the above range, the temperature profile within the medium rod can be uniformly controlled, thereby further improving puff-by-puff aerosol persistence. In some non-limiting examples, the pressure drop of the medium rod may be measured in accordance with CORESTA CRM41, ISO 3308, or ISO 3402. Alternatively, under the pressure drop measurement conditions, the mass of the sheet for the aerosol product may be 1,250 mg or greater and 1,500 mg or less.

[0095] In some embodiments of the present invention, the thickness of the sheet for the aerosol product may be 100 μm or more and 400 μm or less. Specifically, the thickness of the sheet for the aerosol product may be 200 μm or more, 230 μm or more, 235 μm or more, or 250 μm or more, and may 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 the aforementioned range, workability of the sheet and uniformity of suction resistance can be achieved simultaneously. Meanwhile, depending on the physical properties required for the sheet, the conditions under which the sheet is used, etc., the thickness of the sheet may be adjusted to a range other than the aforementioned range.

[0096] In some embodiments of the present invention, the tensile strength of the sheet for the aerosol product is 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 It may be 2,200 N / m or less. The sheet for the aerosol product having a tensile strength within the aforementioned range may have excellent processability, as well as excellent durability and mechanical strength.

[0097] In some embodiments of the present invention, the basis weight of the sheet for the aerosol product is 150 g / m² 2 250 g / m² or more 2 Less than or equal to 170 g / m² 2 200 g / m² or more 2 It may be less than or equal to. Specifically, the basis weight of the sheet for the aerosol product is 175 g / m². 2Above, 185 g / m² 2 Above, 190 g / m² 2 Above, 195 g / m² 2 Above, or 200 g / m² 2 It may be greater than 185 g / m² 2 Below, 190 g / m² 2 Below, 195 g / m² 2 Below, 200 g / m² 2 Below, 210 g / m² 2 Below, 220 g / m² 2 Below, 230 g / m² 2 Below, 240 g / m² 2 250 g / m³ or less 2 It may be less than or equal to the above. When the basis weight of the sheet for the aerosol product described above is within the aforementioned range, it may have excellent processability, as well as excellent durability and mechanical strength.

[0098] In some embodiments of the present invention, the elongation of the sheet for the aerosol product may be 0.1% or more and 10% or less, 1% or more and 9% or less, 2% or more and 8% or less, 3% or more and 7% or less, 4% or more and 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 the aerosol product is within the aforementioned range, the processability and mechanical durability of the sheet may be excellent. In this case, the elongation of the sheet for the aerosol product may refer to the elongation at break.

[0099] In some embodiments of the present invention, the tensile strength and elongation of the sheet for the aerosol product can be measured using measurement methods and measuring devices used in the art. For example, the tensile strength and elongation of the sheet can be measured using the method described in the 2014 publication of the international standard ISO 1924 / 2 titled “Paper and Board – Determination of Tensile Properties – Part 2: Method of Stretching at Constant Speed”. In addition, the tensile strength and elongation of the sheet can be measured using a vertical tensile strength tester (equipment name: Universal Tester Vertical; FRANK-PTI GMBH).

[0100] In some embodiments of the present invention, the sheet for the aerosol product may have a contact angle with water of 70° or more and 130° or less, 80° or more and 125° or less, 90° or more and 120° or less, 105° or more and 115° or less, 70° or more and 120° or less, 75° or more and 110° or less, 100° or more and 130° or less, or 100° or more and 120° or less. The sheet for the aerosol product, having a contact angle with water satisfying the aforementioned ranges, may have excellent processability and storage stability. The contact angle with water of the sheet can be measured using methods and devices used in the industry. For example, the contact angle of the sheet can be measured under conditions of 23°C and 50% relative humidity using a contact angle measuring instrument (Contact angle measurement, equipment name: KRUSS DSA100).

[0101] In some embodiments of the present invention, the thermal conductivity of the sheet for the aerosol product may be 0.13 W / (m·K) or higher and 0.20 W / (m·K) or lower. Specifically, the thermal conductivity of the sheet for the aerosol product may be 0.15 W / (m·K) or higher, 0.17 W / (m·K) or higher, or 0.19 W / (m·K) or higher, and 0.20 W / (m·K) or lower. In some embodiments, by adjusting the thermal conductivity of the sheet for the aerosol product to the above range, it is possible to realize a sheet for the aerosol product in which heat sensation control is easy and nicotine persistence is controlled to an appropriate level. For example, the thermal conductivity of the sheet for the aerosol product may be a value calculated by multiplying the thermal diffusivity measured by the dynamic heat wire method, the density of the sheet, and the specific heat capacity of the sheet.

[0102] Meanwhile, the specific heat capacity of a sheet for aerosol products may be the thermal energy required to raise the temperature by 1K per unit mass of the sheet for aerosol products. That is, specific heat capacity is a measure of the sheet's ability to store thermal energy and can be measured in accordance with ASTM E1269.

[0103] In some embodiments of the present invention, the specific heat capacity (C) of the sheet for the aerosol product may be 1,730 kJ / (kg·K) or higher and 2,100 kJ / (kg·K) or lower. Specifically, the specific heat capacity (C) of the sheet for the aerosol product may be 1,756 kJ / (kg·K) or higher, 1,800 kJ / (kg·K) or higher, 1,900 kJ / (kg·K) or higher, or 1,960 kJ / (kg·K) or higher, and may be 2,000 kJ / (kg·K) or lower, 2,080 kJ / (kg·K) or lower, or 2,100 kJ / (kg·K) or lower. In some embodiments, the specific heat capacity of the sheet for the aerosol product is adjusted to the above range, thereby enabling easy control of the heat sensation and maintaining nicotine persistence at an appropriate level, thereby enabling the realization of a sheet for the aerosol product.

[0104] moisture

[0105] In some embodiments of the present invention, the sheet for the aerosol product may further contain moisture that affects the heat sensation felt by the user of the aerosol product and the mechanical properties. Specifically, if the moisture content of the sheet for the aerosol product is high, the ease of winding may be excellent, but the amount of water vapor that evaporates increases, which may cause a problem in which the intensity of the heat sensation felt by the user increases. On the other hand, if the moisture content of the sheet for the aerosol product is low, the amount of water vapor that evaporates decreases, thereby reducing the intensity of the heat sensation, but a problem may occur in which mechanical properties deteriorate, such as tearing during sheet winding. In other words, heat sensation performance and mechanical properties have a trade-off relationship in which increasing one performance leads to decreasing the other.

[0106] In some embodiments of the present invention, the moisture content may be 1 part by weight or more and 12 parts by weight or less based on 100 parts by weight of the sheet for the aerosol product. Specifically, the moisture content may be 1 part by weight or more, 3 parts by weight or more, 5 parts by weight or more, 6 parts by weight or less, 7 parts by weight or less, or 9 parts by weight or less based on 100 parts by weight of the sheet for the aerosol product. For example, the moisture content of the sheet for the aerosol product may be measured under conditions of 22°C and 50% relative humidity. In some embodiments, by controlling the moisture content of the sheet for the aerosol product to the above range, it is possible to realize a sheet for the aerosol product that minimizes the heat sensation felt by the user during smoking while simultaneously having excellent mechanical properties.

[0107] For example, the moisture content of the sheet for the aerosol product can be varied by adjusting the drying temperature, drying time, and the content of the solvent (water) of the composition for forming the sheet for the aerosol product, respectively.

[0108] additives

[0109] In some embodiments of the present invention, the sheet for the aerosol product may further include one or more additives selected from the group consisting of an active substance, a bulking agent, a moisture regulator, a filler, a casing, an emulsifier, and a vitamin component.

[0110] In this specification, the "active substance" may include an alkaloid compound that is delivered to the user when the aerosol product is heated in an aerosol generating device. Specifically, the active substance may include nicotine, a nicotine derivative, or a nicotine salt. In this case, when nicotine is combined with an organic acid, the pH of the nicotine is lowered, allowing it to be delivered to the user in the form of a nicotine salt with a high absorption rate by the human body. Here, the nicotine, nicotine derivative, or nicotine salt included in the active substance may be a component distinct from the nicotine or nicotine salt that is the active ingredient contained in the tobacco material.

[0111] In some embodiments of the present invention, the sheet for the aerosol product may further include an active substance to deliver nicotine or a nicotine salt to a user.

[0112] In some embodiments of the present invention, the content of the active substance based on the dry weight of the sheet for the aerosol product may be 4% by weight or less, 3% by weight or less, 2% by weight or less, or 1% by weight or less, and may be 0.1% by weight or more. In some embodiments, by controlling the content of the active substance to the above range, the active substance is sufficiently delivered to the user's mouth so that a sufficient smoking satisfaction can be achieved.

[0113] In some embodiments of the present invention, the nicotine content may be 0.5% by weight or more and 2.0% by weight or less based on the dry weight of the sheet for the aerosol product. In some embodiments, by controlling the nicotine content to the above range, nicotine or nicotine salt is sufficiently delivered to the user's mouth, thereby effectively providing the user with taste satisfaction and excellent smoking properties.

[0114] In some embodiments of the present invention, the content of the organic acid may be 0.5% by weight or more and 2.0% by weight or less based on the dry weight of the sheet for the aerosol product. In some embodiments, by controlling the content of the organic acid to the above range, the pH of the nicotine can be sufficiently lowered so that the nicotine salt in a salt state can be effectively delivered to the user's mouth.

[0115] In some embodiments of the present invention, the organic acid is 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, It may include one or more selected from the group consisting of tartaric acid, succinic acid, fumaric 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 to further increase the absorption rate in the human body.

[0116] From another perspective, the hydrate of the aforementioned organic acid may be one of the factors affecting the moisture content of the sheet for aerosol products. By using the hydrate of the aforementioned organic acid, it is possible to realize a sheet for aerosol products that not only minimizes the heat sensation felt by the user but also possesses excellent mechanical properties, such as not tearing during winding.

[0117] The bulking agent according to the present invention can increase the total mass of components other than water in a composition for forming a sheet for an aerosol product, thereby increasing the volume of the sheet for the aerosol product. In addition, the bulking agent may not substantially increase the viscosity of the composition for forming a sheet for an aerosol product.

[0118] In some embodiments of the present invention, the bulking agent may comprise at least one of starch and starch hydrolysate. Starch hydrolysate may refer to a substance obtained by a process including a process of hydrolyzing starch. Starch hydrolysate may be, for example, a substance obtained by directly hydrolyzing starch (i.e., dextrin), or a substance obtained by hydrolyzing starch after heat treatment (i.e., indigestible dextrin). For example, the bulking agent may comprise dextrin. Specifically, the bulking agent may comprise at least one of cyclodextrin and maltodextrin. However, the type of dextrin is not limited thereto.

[0119] DE stands for dextrose equivalent and is a value representing the degree of starch hydrolysis, that is, the saccharification rate of starch. The DE value is measured by the Willstatter-Schudel method. The DE value is measured as a specific numerical value by the Willstatter-Schudel method. The characteristics of hydrolyzed starch (starch hydrolysate), such as the molecular weight of the starch hydrolysate or the arrangement of sugar molecules constituting the starch hydrolysate, are not constant for each molecule of the starch hydrolysate but exist with a certain distribution or variation. Due to the distribution or variation of the characteristics of the starch hydrolysate, or differences in the cutting sections, different physical properties (e.g., DE) are exhibited for each molecule of the starch hydrolysate. Thus, although the starch hydrolysate is a collection of molecules exhibiting different physical properties, the measurement result from the Willstatter-Schudel method (i.e., DE) is treated as a representative value representing the degree of starch hydrolysis.

[0120] In some embodiments of the present invention, the bulking agent may include a starch hydrolysate having a DE of 1 or more and 20 or less. For example, the DE of the starch hydrolysate may be 2 or more and 18 or less, 3 or more and 15 or less, 5 or more and 10 or less, 10 or more and 20 or less, 12 or more and 18 or less, 1 or more and 5 or less, or 1 or more and 10 or less. Specifically, the starch hydrolysate may include at least one of a dextrin having a DE value of 1 or more and 5 or less and an indigestible dextrin having a DE value of 10 or more and 20 or less. More specifically, the bulking agent may include the dextrin as the starch hydrolysate. By using a bulking agent containing a starch hydrolysate having the aforementioned DE value, shrinkage of the sheet for aerosol products can be prevented during the manufacturing process and storage. Through this, processability during the manufacturing of the sheet for aerosol products can be improved, and storage stability can be improved.

[0121] In some embodiments of the present invention, the content of the bulking agent based on the dry weight of the sheet for the aerosol product may be 0.1 wt% or more and 20 wt% or less. Specifically, the content of the bulking agent may be 0.1 wt% or more, 5.0 wt% or more, or 7.5 wt% or more, and 9 wt% or less, 10 wt% or less, 15 wt% or less, or 20 wt% or less, based on the dry weight of the sheet for the aerosol product. In some embodiments, by controlling the content of the bulking agent to the above range, shrinkage of the sheet can be effectively prevented during the manufacturing process and storage of the sheet for the aerosol product. In addition, by controlling the content of the bulking agent to the above range, the flavor retention period of the sheet for the aerosol product can be extended, and the water solubility, thermal stability, and oxidation resistance of the flavor components can be improved.

[0122] For example, the content of the bulking agent may vary depending on the viscosity or weight-average molecular weight of the binder.

[0123] In some embodiments of the present invention, the sheet for the aerosol product may further include a moisture regulator. Specifically, the moisture regulator may include any one selected from the group consisting of a compound represented by the following Chemical Formula 1, benzyl benzoate, and combinations thereof, and more specifically, may include a compound represented by the following Chemical Formula 1. In some embodiments, by using the compound represented by Chemical Formula 1 as the moisture regulator, the moisture-repellent properties of the sheet for the aerosol product can be further improved compared to benzyl benzoate. Additionally, the moisture regulator may be a factor that controls the heat sensation by controlling the moisture content of the sheet.

[0124] [Chemical Formula 1]

[0125]

[0126] In the above chemical formula 1, R1 is hydrogen or a hydroxyl group, and R2 to R4 are each independently a carboxyl group (-CO2H); ; or and R 11 is a straight-chain or branched-chain alkyl group having 1 to 3 carbon atoms, and R 12 is a straight-chain or branched-chain alkyl group having 3 to 12 carbon atoms. Specifically, the above R 11 The number of carbon atoms in the alkyl group of can be 1 to 2 or 2 to 3, and the R 12 The number of carbon atoms in the alkyl group can be 5 to 10, 7 to 10, 3 to 10, 5 to 9, 7 to 12, or 7 to 9. In the above chemical formula, "*" indicates a bonding position.

[0127] By using a moisture control agent comprising a compound represented by Chemical Formula 1 above, the storage stability and processability of the sheet for the aerosol product can be improved. Specifically, by including the moisture control agent, the moisture-resistant properties of the sheet for the aerosol product can be improved. Through this, the sheet for the aerosol product can have excellent long-term storage reliability and can effectively prevent deformation or damage to the sheet when stored under humid conditions. In addition, an appropriate level of heat sensation can be achieved by controlling the moisture content within the sheet for the aerosol product.

[0128] In some embodiments of the present invention, at least two of R2 to R4 may be identical to each other. When using a moisture control agent comprising a compound represented by Chemical Formula 1, in which at least two of R2 to R4 are identical, the storage stability and processability of the sheet for the aerosol product can be effectively improved.

[0129] In some embodiments of the present invention, the moisture regulator may include a compound represented by the following chemical formula 1-1.

[0130] [Chemical Formula 1-1]

[0131]

[0132] In the above chemical formula 1-1, R1 is a hydroxyl group, and R 21 to R 23 Each is independently hydrogen; or a straight-chain or branched-chain alkyl group having 1 to 3 carbon atoms, and R 21 to R 23 At least one of them is a straight-chain or branched-chain alkyl group having 1 to 3 carbon atoms. Specifically, the R 21 to R 23 The number of carbon atoms in the alkyl groups of can each independently be 1 to 2, or 2 to 3. In addition, R 21 to R 23 At least two of them may each independently be a straight-chain or branched-chain alkyl group having 1 to 3 carbon atoms. In addition, R 21 to R 23 If each of these is independently the alkyl group, they may be identical to each other.

[0133] By using a moisture control agent comprising a compound represented by Chemical Formula 1-1 above, the moisture-resistant properties of the sheet for the aerosol product can be improved, and the moisture content contained in the sheet for the aerosol product can be easily controlled. In addition, when using a moisture control agent comprising a compound represented by Chemical Formula 1-1 above, an aerosol product sheet with excellent long-term storage reliability can be realized. Furthermore, by controlling the moisture content within the sheet for the aerosol product, an appropriate level of heat sensation can be achieved.

[0134] In some embodiments of the present invention, the moisture regulator may include a compound represented by the following chemical formula 1-2.

[0135] [Chemical Formula 1-2]

[0136]

[0137] In the above chemical formula 1-2, R 31to R 33 Each is independently a straight-chain or branched-chain alkyl group having 3 to 12 carbon atoms. Specifically, R 31 to R 33 The number of carbon atoms in the alkyl group of can each independently be 5 to 10, 7 to 10, 3 to 10, 5 to 9, 7 to 12, or 7 to 9. In addition, R 31 to R 33 At least two of them may be identical to each other. Also, R 33 The carbon number of the alkyl group is R 31 and R 32 The number of carbon atoms in the alkyl group may be greater than that of the aerosol product. When a moisture control agent containing a compound represented by Chemical Formula 1-2 is used, the storage stability and processability of the sheet for the aerosol product can be effectively improved. In addition, an appropriate level of heat sensation can be achieved by controlling the moisture content in the sheet for the aerosol product.

[0138] In some embodiments of the present invention, the content of the moisture regulator may be 0.5 wt% or more and 2.0 wt% or less based on the dry weight of the sheet for the aerosol product. Specifically, based on the dry weight of the sheet for the aerosol product, the content of the moisture regulator may be 0.5 wt% or more, or 1.0 wt% or more, and 1.5 wt% or less, or 2.0 wt% or less. In some embodiments, by controlling the content of the moisture regulator to the above range, the moisture-preventing properties of the sheet for the aerosol product can be improved, and the moisture content contained in the sheet for the aerosol product can be easily controlled. Furthermore, by controlling the content of the moisture regulator to the aforementioned range, the long-term storage reliability of the sheet for the aerosol product can be further improved, and deformation or damage to the sheet when stored under humid conditions can be effectively suppressed. In addition, the viscosity stability of the sheet-forming composition can be further improved. Furthermore, an appropriate level of thermal sensation can be achieved.

[0139] In some embodiments of the present invention, the weight ratio of the moisture regulator to the aerosol-forming material may be 1:3 to 1:100. Specifically, the weight ratio of the moisture regulator to the aerosol-forming material may be 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 and the aerosol-forming material included in the sheet for the aerosol product is within the aforementioned range, the moisture-preventing properties of the sheet for the aerosol product can be improved, and aerosol formation can be facilitated upon heating of the sheet, thereby enabling rich smoking transfer properties.

[0140] The filler according to the present invention can reinforce mechanical properties such as strength and durability of the sheet for the aerosol product.

[0141] In some embodiments of the present invention, the filler may be a non-tobacco material. Specifically, the filler may comprise at least one of a cellulose-based material and a cellulose derivative material. For example, the cellulose-based material may refer to a lattice-type polysaccharide in which linear chains of D-glucose units connected by beta-glycosidic bonds are superimposed. The cellulose derivative material may refer to a material having the cellulose-based material as a base matrix, to which at least one of the introduction of functional groups, oxidation, reduction, and substitution of atoms is applied. For example, the cellulose derivative material may be esterified cellulose or etherified cellulose. For example, the filler may comprise at least one of wood fibers, wheat fibers, and pulp (e.g., wood pulp). By using the aforementioned types of fillers, the mechanical properties of the sheet for the aerosol product can be effectively improved.

[0142] In some embodiments of the present invention, the content of the filler based on the dry weight of the sheet for the aerosol product may be 2 weight% or more and 8 weight% or less. Specifically, based on the dry weight of the sheet for the aerosol product, the content of the filler may be 3 weight% or more, or 5 weight% or more, and 7 weight% or less, or 8 weight% or less. In some embodiments, by controlling the content of the filler to the above range, the mechanical properties of the sheet for the aerosol product, such as strength and durability, can be effectively reinforced.

[0143] In some embodiments of the present invention, the casing can improve the quality and taste of the tobacco material. For example, the casing may vary depending on the type of tobacco material.

[0144] In some non-limiting examples, the casing comprises natural plant-based flavorings (e.g., licorice, fenugreek, cinnamon, sage, herbs, chamomile, rosemary, amacha, clove, lavender, cardamom, clove, nutmeg, bergamot, geranium, rose oil, lemon, orange, cinnamon, caraway, jasmine, ginger, coriander, coriander, spearmint, peppermint, cassia, coffee, celery, cascarilla, sandalwood, ylang-ylang, fennel, anise, licorice, St. John's bread, etc.); sugars (e.g., glucose, fructose, isomerized sugar, caramel, etc.); esters (e.g., isoamyl acetate, linalyl acetate, isoamyl propionate, linalyl butyrate, etc.); It may include one or more selected from the group consisting of ketones (e.g., menthone, ionone, damaxenone, ethyl maltol, etc.); alcohols (e.g., geraniol, linalol, anethole, eugenol, etc.); aldehydes (e.g., vanillin, benzaldehyde, anisaldehyde, etc.); lactones (e.g., γ-undecaractone, γ-nonalactone, etc.); animal flavoring agents (e.g., musk, ambergris, civet, castrium, etc.); and hydrocarbons (e.g., limonene, pinene, etc.).

[0145] For example, the formulation of the above casing is not particularly limited and may be a solid, semi-solid, solution, or suspension. As an example, the solid may include at least one of powder and granule, and the semi-solid may include at least one of gel and paste.

[0146] In some embodiments of the present invention, the emulsifier can increase the fragrance retention of a sheet for an aerosol product by ensuring that a highly fat-soluble fragrance and a water-soluble polysaccharide material are well mixed. Lecithin may be cited as an example of an emulsifier, but the type of emulsifier is not limited.

[0147] 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 the vitamin component are not limited.

[0148] In some non-limiting examples, based on the dry weight of the sheet for the aerosol product, the content of an additive not specifically defined may be 0.1% by weight or more and 7% by weight or less. Specifically, based on 100 parts by weight of the dry weight of the sheet for the aerosol product, the content of the additive may 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 may be 0.5 parts by weight or less, 1.0 parts by weight or less, 2.0 parts by weight or less, 3.0 parts by weight or less, 4.0 parts by weight or less, 5.0 parts by weight or less, or 7.0 parts by weight or less.

[0149] Sheet-forming composition

[0150] In some embodiments of the present invention, the sheet for the aerosol product may be made of the sheet-forming composition. In some embodiments of the present invention, the sheet for the aerosol product may comprise a dried product of the sheet-forming composition.

[0151] In some embodiments of the present invention, the sheet-forming composition may comprise a sheet-forming material and a solvent. Specifically, the sheet-forming material may comprise a support, an aerosol-forming material, a binder, and a tobacco material. If necessary, the sheet-forming material may further comprise one or more additives selected from the group consisting of an active material, a bulking agent, a moisture regulator, a filler, a casing, an emulsifier, and a vitamin component. In this case, the sheet-forming material may be defined as comprising all components except the solvent included in the sheet-forming composition for the aerosol product.

[0152] 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.

[0153] In some embodiments of the present invention, the drying time of the sheet-forming composition may be 8 minutes or more and 15 minutes or less, 9 minutes or more and 14 minutes or less, 10 minutes or more and 13 minutes or less, 10 minutes or more and 12 minutes or less, or 10 minutes or more and 11 minutes or less, based on a sheet thickness of 200 μm.

[0154] In some non-limiting examples, the drying temperature and drying time of the sheet-forming composition are simultaneously controlled within the above numerical range, thereby allowing the moisture content in the sheet for the aerosol product to be reduced to an appropriate level, and accordingly, an aerosol product with excellent mechanical properties that does not tear during winding and has controlled thermal intensity can be realized.

[0155] In some non-limiting examples, the composition for forming a sheet for the aerosol product may include a solvent. The solvent may include a hydrophilic solvent, and specifically, the solvent may include water.

[0156] In some examples, with respect to 100 parts by weight of the sheet-forming material, the content of the solvent may 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 content of the solvent is within the aforementioned range, the sheet-forming material can be homogeneously mixed in the sheet-forming composition for the aerosol product, and the processability of the sheet-forming composition for the aerosol product can be improved.

[0157] In some non-limiting examples, the sheet-forming material may remain in the sheet for the aerosol product. Specifically, the sheet-forming material may remain in the sheet for the aerosol product by drying the composition for forming the sheet for the aerosol product to produce the sheet for the aerosol product. Accordingly, the content ratio of the components included in the sheet-forming material may be the same in the composition for forming the sheet for the aerosol product and in the sheet for the aerosol product.

[0158] In some embodiments of the present invention, the viscosity of the sheet-forming composition 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 at 37°C. For example, the viscosity of the sheet-forming composition for the aerosol product may be measured at spindle No. 6 of a viscometer (equipment name: Brookfield Viscometer DV2T-RV) at a rotational speed of 20 rpm. By controlling the viscosity of the sheet-forming composition for the aerosol product to the aforementioned range, a sheet with advantageous processability, low variation in sheet thickness, and excellent mechanical properties can be realized.

[0159] 2. Aerosol products and aerosol generating devices

[0160] In this specification, "Upstream" or "upstream direction" refers to a direction away from the user's bend using the aerosol product, and "Downstream" or "downstream direction" may refer to a direction closer to the user's bend. The terms upstream and downstream may be used to describe the relative positions of the elements constituting the aerosol product.

[0161] In this specification, "longitudinal direction" may refer to a direction corresponding to the longitudinal axis of the aerosol product. Accordingly, the length of each part of the aerosol product may refer to a length defined along the longitudinal direction.

[0162] In this specification, the term "connection" refers not only to the direct structural connection of certain members but also includes the concept of indirect connection through the interposition of other members. Furthermore, in this specification, "connection" may include not only structural matters but also cases where one member is electrically connected to another. For example, the statement that a first component and a second component are connected may mean that they are structurally connected directly or indirectly, or are electrically connected.

[0163] According to another aspect of the present invention, an aerosol product is provided, comprising a sheet for an aerosol product according to some embodiment. According to another aspect, by including the sheet for the aerosol product in the aerosol product, the sheet is heated by a heater of an aerosol generating device to be described later, so that a component such as nicotine contained in the sheet is released and transferred to the user's mouth.

[0164] The configuration of the present invention will be described in more detail below with reference to the drawings.

[0165] FIG. 1 is a perspective view showing an aerosol product according to one embodiment of the present invention.

[0166] Referring to FIG. 1, in one embodiment of the present invention, the aerosol product (100) may include first to fourth parts (SEG1, SEG2, SEG3, SEG4). Specifically, the first to fourth parts (SEG1, SEG2, SEG3, SEG4) may be arranged side by side in the longitudinal direction (L) of the aerosol product (100). More specifically, the second part (SEG2) may be interposed between the first part (SEG1) and the third part (SEG3), and the third part (SEG3) may be interposed between the second part (SEG2) and the fourth part (SEG4). For example, the thickness direction (T) may be a direction that intersects the longitudinal direction (L) of the aerosol product (100).

[0167] FIG. 2 is a schematic diagram showing an aerosol generating device according to one embodiment of the present invention.

[0168] Referring to FIG. 2, the aerosol generating device (300) according to the present invention may include a body (B), a battery (310), a control unit (320), a sensor (325), and a heater (330). For example, the aerosol generating device (300) may include other general or common components in addition to the components shown. Specifically, the aerosol generating device (300) may include an output module (e.g., motor, display) for outputting the status of the device, an input module (e.g., button) for receiving user input (e.g., device on / off, etc.).

[0169] In this specification, “Configured to” may be used interchangeably with, depending on some embodiments,, for example, “Suitable for,” “Having the capacity to,” “Designed to,” “Adapted to,” “Made to,” or “Capable of.” The term “Configured to” may not necessarily mean only that it is “specifically designed to” in hardware. Instead, in some embodiments, the expression “device configured to” may mean that the device is “capable of” together with other devices or components.

[0170] Referring to FIGS. 1 and 2, the body (B) according to the present invention may be configured to form the exterior of an aerosol generating device (300). Specifically, the body (B) may be configured to provide a receiving space into which a part of the aerosol product (100) of some of the above-described embodiments is inserted.

[0171] The battery (310) according to the present invention may be configured to supply power to enable the components of the aerosol generating device (300) to operate. Specifically, the battery (310) may 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) may supply power to an induction coil.

[0172] A control unit (320) according to the present invention may be configured to control the overall operation of an aerosol generating device (300). For example, the control unit (320) may be configured to control the operation of at least one of a battery (310), a sensor (325), and a heater (330). In some examples, the control unit (320) may be configured to control the operation of an induction coil. In some alternative or additional examples, the control unit (320) may be configured to control the operation of a display, a motor, etc., installed in the aerosol generating device (300). In some alternative or additional examples, the control unit (320) may be configured to check the status of each component of the aerosol generating device to determine whether the aerosol generating device is in an operable state.

[0173] The sensor (325) according to the present invention may be configured to detect at least one of the temperature of the heater (330), the internal and / or external temperature of the body (B), the user's puff, and whether the aerosol product (100) has been inserted into the aforementioned receiving space. 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 detection sensor.

[0174] A heater (330) according to the present invention is configured to heat at least one of a first part (SEG1) and a second part (SEG2) of an aerosol product (100) inserted into a receiving space, thereby generating smoke and / or aerosol. In some examples, the heater (330) may be configured to heat both a portion of the first part (SEG1) and a portion of the second part (SEG2) of the aerosol product (100). In some embodiments, the aerosol product (100) inserted into such a receiving space may generate an aerosol as it is heated by the heater (330). The generated aerosol may be inhaled through the user's mouth end.

[0175] In some embodiments of the present invention, the heater (330) may be a resistive heater. Specifically, the heater (330) may include a conductive track, and the heater (330) may be heated as current flows through the conductive track. Specifically, the heater (330) may be electrically connected to the battery (310) to receive current and generate heat directly.

[0176] Referring to FIG. 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 human-shaped or Y-shaped filter. In some alternative or additional examples, the hollow filter may include cellulose acetate.

[0177] Referring to FIGS. 1 and 2, in some embodiments of the present invention, the first filter element (e.g., 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 sheet for aerosol product described above. For example, the first sub-aerosol forming material may be impregnated into the first filter element (e.g., paper filter). The aerosol generated by heating the first sub-aerosol forming material can effectively transfer the aerosol generated in the sheet for aerosol product included in the second part (SEG2) downstream. In some non-limiting examples, the first sub-aerosol forming material may comprise 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.

[0178] In some embodiments of the present invention, the first portion (SEG1) may further include a first roll of paper configured to enclose the first filter element. In some non-limiting examples, the first roll of paper may include a conductive material, specifically aluminum foil (Al foil). In some examples, the first roll of paper may be electrically connected to the sensor (325) by including the conductive material described above.

[0179] In some embodiments of the present invention, when the sheet for the aerosol product is included in the second part (SEG2), the sheet for the aerosol product may be a single or multiple sub-sheets that are crimped. Here, "crimping" may include one or more structures selected from the group consisting of embossed structures, intaglio structures, and perforated structures, specifically may include a structure combining embossed structures and intaglio structures, and more specifically may mean a structure having multiple folds.

[0180] In some embodiments of the present invention, a plurality of folds in the sheet for the aerosol product included in the second part (SEG2) may extend parallel to the longitudinal axis of the aerosol product. In some embodiments, by extending the plurality of folds parallel to the longitudinal axis of the aerosol product, a desired flow of aerosol is provided as the sheet for the aerosol product is heated, thereby enabling the realization of an appropriate level of suction resistance.

[0181] In some embodiments of the present invention, the second portion (SEG2) may further include a second roll of paper configured to wrap a sheet for an aerosol product of some embodiments described above. In some non-limiting examples, the second roll of paper may include aluminum foil.

[0182] In some embodiments of the present invention, the content of the sheet for the aerosol product included in the second part (SEG2) may be 210 mg or more and 280 mg or less. Specifically, the content of the sheet for the aerosol product included in the second part (SEG2) may be 210 mg or more, 220 mg or more, or 230 mg or more, and may 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, the taste performance and satisfaction may be further improved by adjusting the content of the sheet for the aerosol product to the above range.

[0183] In some embodiments of the present invention, the third part (SEG3) may include a second filter element. For example, by including the second filter element, the third part (SEG3) may perform a cooling function for the aerosol transported from the front end of the aerosol product and may additionally perform a filtration function. In some examples, the second filter element is not particularly limited and may be a hollow filter commercially available in the art, specifically a tubular filter comprising cellulose acetate.

[0184] In some embodiments of the present invention, the third portion (SEG3) may further include a third roll of paper configured to wrap the second filter element. In some non-limiting examples, the third roll of paper may include a tube roll of paper commonly used in the art.

[0185] In some embodiments of the present invention, the fourth part (SEG4) may include a third filter element that further filters the aerosol received from the third part (SEG3). In some examples, the third filter element is not particularly limited and may be a filter commercially available in the art. Specifically, the third filter element may be an assembly (tow) of continuous filaments made of cellulose acetate.

[0186] In some embodiments of the present invention, the fourth part (SEG4) may further include a fourth roll of paper configured to enclose the third filter element. In some non-limiting examples, the fourth roll of paper may include an oil-resistant hard roll of paper with an oil-resistant surface that is commercially available in the art; or a PLA (Poly Lactic Acid) laminate.

[0187] FIG. 3 is a schematic diagram showing an aerosol generating device according to an embodiment of the present invention. Descriptions that are repeated with the foregoing are briefly explained or omitted. For example, the description of the third and fourth parts may be the same as the foregoing.

[0188] Referring to FIGS. 1 and 3, an aerosol generating device (300) according to one embodiment of the present invention may further include a cartridge (340) configured to contain a second sub-aerosol forming material having any one of the states such as a liquid state, a solid state, a gaseous state, or a gel state. Specifically, the cartridge (340) may be configured to transport the second sub-aerosol forming material downstream of the aerosol product (100). For example, the second sub-aerosol forming material may include a liquid composition. Specifically, the liquid composition may include the aerosol forming material described above.

[0189] Referring to FIGS. 1 and 3, in some embodiments of the present invention, the heater (330) may be configured to heat the second part (SEG2). In some examples, the heater (330) may be configured not to heat the first part (SEG1).

[0190] A cartridge (340) according to the present invention may include a storage unit (C0) configured to store a second sub-aerosol forming material, and a sub-heater (S_H) configured to heat the second sub-aerosol forming material stored in the storage unit (C0).

[0191] For example, a second sub-aerosol forming material contained in the storage portion (C0) of the cartridge (340) can generate an aerosol by being heated by a sub-heater (S_H). The generated aerosol is transferred to the first portion (SEG1) of the aerosol product (100) through the airflow channel (CN) to promote downstream migration of components such as nicotine released from the sheet (10) for the aerosol product contained in the second portion (SEG2).

[0192] In some examples, the storage portion (C0) may include a liquid delivery means impregnated with the second sub-aerosol forming material described above. In some non-limiting examples, the liquid delivery means may include a wick such as cotton fiber, ceramic fiber, glass fiber, or porous ceramic.

[0193] In some embodiments of the present invention, the first portion (SEG1) may include a fourth filter element configured to allow the aerosol supplied from the cartridge (340) to move. For example, the fourth filter element may include a hollow filter commercially available in the art, specifically a human-shaped or Y-shaped filter. In some non-limiting examples, the fourth filter element may include cellulose acetate.

[0194] In some embodiments of the present invention, the first part (SEG1) can recognize the aerosol product (100) by including aluminum foil (Al foil) as a filter paper.

[0195] In some embodiments of the present invention, the second part (SEG2) may include the aerosol product sheet (10) described above. In some embodiments, by including the aerosol product sheet in the second part (SEG2), components such as nicotine contained in the aerosol product sheet may volatilize from the aerosol supplied from the cartridge (340) and transfer to the user's mouth.

[0196] FIG. 4 is a modified example of a sheet for an aerosol product according to one embodiment of the present invention. Specifically, the sheet for an aerosol product shown in FIG. 4 is a cross-sectional view obtained by cutting the sheet for an aerosol product along the longitudinal (L) axis of the aerosol product (100).

[0197] Referring to FIG. 4, a sheet (10) for an aerosol product according to one embodiment of the present invention may be a laminate in which two or more sub-sheets (10a) are stacked. For example, the sub-sheets may be manufactured by cutting a single sheet for an aerosol product.

[0198] For example, the total number of the above sub-sheets (10a) is not specifically limited, but specifically can be between 50 and 200.

[0199] According to one embodiment of the present invention, at least one of the two or more subsheets (10a) may include a crimped structure, and specifically, all subsheets may include a crimped structure. According to one embodiment of the present invention, by including all subsheets a crimped structure, the aerosol and nicotine or nicotine salt generated in the sheet (10) for the aerosol product can be transferred more effectively.

[0200] For example, the thickness of the sub-sheet (10a) is not specifically limited, but specifically may 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. At this time, the thickness direction (T) of the sub-sheet (10a) may be a direction that intersects the length direction (L) of the aerosol product (100), and specifically may be a direction perpendicular to the length direction (L) of the aerosol product (100).

[0201] Hereinafter, embodiments of the present invention are described in detail so that those skilled in the art can easily implement the present invention; however, this is merely an example, and the scope of the present invention is not limited by the following.

[0202] In this specification, terms such as “about” or “substantially” mean a reasonable amount of variation of a term modified so as not to significantly alter the final result. Such terms may be interpreted to include a deviation of at least ±5% or at least ±10% relative to the stated value, to the extent that the deviation does not alter or invalidate the meaning of the word.

[0203] [Preparation Example: Preparation of Materials]

[0204] A material having the characteristics according to Table 1 below was prepared to manufacture a sheet for an aerosol product of Manufacturing Example 1 below.

[0205] Classification Characteristics Pulp Wood Pulp (CAS No 65996-61-4) Support Median Grain Diameter (D 50 The density is approximately 70 µm and the bulk density is 0.28 g / cm³ 3 Microcrystalline cellulose (MCC) leaf tobacco powder having a chloride ion content of about 0.02 wt% and a degree of polymerization of about 300, comprising yellow, Burley, and Orient varieties mixed in a weight ratio of 10:1:1, and a median particle size (D 50 ) Leaf tobacco powder bulking agent adjusted to the values ​​listed in Table 2 below, Dextrin with a Dextrose equivalent of about 1, Carboxymethylcellulose (CMC) with a viscosity of about 255 mPa·s under measurement conditions of 25°C, 1 wt% concentration, Brookfield LVT viscometer No. 3 spindle, and 60 RPM rotation speed, 2 CMC with a viscosity of about 1,190 mPa·s under measurement conditions of 25°C, 1 wt% concentration, Brookfield LVT viscometer No. 3 spindle, and 60 RPM rotation speed, Moisture regulator Triethyl Citrate, Organic acid Citric acid monohydrate

[0206] [Manufacturing Example 1: Preparation of a sheet for an aerosol product]

[0207] A sheet-forming composition comprising a sheet-forming material (completely dried sheet) having the composition listed in Table 2 below and a solvent (water) was prepared, and then dried at about 100°C for about 15 minutes to produce a sheet for an aerosol product having a moisture content of about 6 wt%.

[0208] [Experimental Example 1: Arithmetic Mean Roughness of Sheets for Aerosol Products]

[0209] For the sheet specimen (width and length: 25 cm X 25 cm) of Manufacturing Example 1 above, the arithmetic mean roughness (R) of the sheet in the MD (Machine Direction) direction was measured using a surface profiler (equipment name: KLA-Tencor, D-300) in accordance with ISO 4287 & 4288. a ) was measured. At this time, the test environment was controlled at approximately 23±2℃ and approximately 45±5% RH.

[0210] [Experimental Example 2: Pressure drop of the medium rod (part 2)]

[0211] A 1,380 mg sheet for aerosol products was wrapped in paper to manufacture an air-leak-free medium rod (circumference: approx. 22 mm, length: approx. 72 mm). Under conditions of 23±3℃, relative humidity of 60±5% RH, and a volumetric flow rate of approx. 17.5 mL / s at the outlet end of the medium rod, the medium rod was inserted into a pressure drop measuring instrument (KARDIEN’s physical property measuring instrument BWSPHT) in accordance with CORESTA CRM41, and the pressure drop of the medium rod was measured; the results are shown in Table 2 below. At this time, the appropriate pressure drop of the medium rod is 70 mm H2O or more and 120 mm H2O or less.

[0212] [Experimental Example 3: Method for Calculating Basis Weight of Sheets for Aerosol Products]

[0213] After preparing a sheet specimen (width and length: 25 cm X 25 cm) for the aerosol product of Manufacturing Example 1 above, the weight per unit area was measured using a scale to calculate the basis weight.

[0214] Classification (Unit: parts by weight) Comparative Example 1 Comparative Example 2 Example 1 Example 2 Example 3 Example 4 Support (MCC) 25.5 25.5 25.5 25.5 25.5 25.5 Leaf Tobacco Powder 30 30 30 30 30 Pulp 5.0 5.0 5.0 5.0 5.0 5.0 1st CMC 7.0 7.0 7.0 7.0 7.0 7.0 2 CMC 3.0 3.0 3.0 3.0 3.0 3.0 Dextrin 5.0 5.0 5.0 5.0 5.0 5.0 Glycerin 20.0 20.0 20.0 20.0 20.0 Organic acid 1.0 1.0 1.0 1.0 1.0 1.0 Moisture regulator 1.5 1.5 1.5 1.5 1.5 1.5 Casing (invert sugar) 2.0 2.0 2.0 2.0 2.0 2.0 Total 100 100 100 100 100 100 Median particle size of leaf tobacco powder (D 50 )18 ㎛ 120 ㎛ 25 ㎛ 50 ㎛ 75 ㎛ 100 ㎛ Sheet basis weight (g / m² 2 )170 g / m 2 200 g / m 2 175 g / m 2 185 g / m 2 190 g / m 2 195 g / m 2 Sheet thickness (㎛) 195㎛ 350㎛ 200㎛ 230㎛ 235㎛ 250㎛ Arithmetic mean roughness of the sheet (R a )1.2㎛ 4.1㎛ 1.4㎛ 1.9㎛ 2.6㎛ 3.4㎛ Pressure drop of medium load (mm H2O) 68 12 17 37 9 88 104

[0215] Referring to Table 2 above, Examples 1 to 4 showed the effect of controlling the pressure drop of the medium rod to an appropriate level by adjusting the arithmetic mean roughness of the sheet to 1.3 μm or more and 4.0 μm or less compared to Comparative Examples 1 and 2.

[0216] On the other hand, in the case of Comparative Example 1, the arithmetic mean roughness of the sheet was adjusted to less than 1.3 μm, causing a problem in which the pressure drop of the medium rod was lower than the appropriate range. In addition, in the case of Comparative Example 2, the arithmetic mean roughness of the sheet was adjusted to more than 4.0 μm, causing a problem in which the pressure drop of the medium rod was higher than the appropriate range.

[0217] The features described in the above-described embodiment may be combined with other embodiments unless explicitly stated otherwise. Furthermore, although preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims also fall within the scope of the present invention.

[0218] [Explanation of the symbol]

[0219] 10: Sheets for aerosol products

[0220] 100: Aerosol product

[0221] SEG1: Part 1

[0222] SEG2: Part 2

[0223] SEG3: Part 3

[0224] SEG4: Part 4

[0225] 300: Aerosol generator

[0226] B: Body

[0227] 310: Battery

[0228] 320: Control unit

[0229] 325: Sensor

[0230] 330: Heater

[0231] 340: Cartridge

[0232] C0: Storage section

[0233] S_H: Sub heater

[0234] L: Length direction

[0235] T: Thickness direction

Claims

1. Support; Aerosol-forming substance; Binder; and Includes tobacco substances; and Arithmetic Average Roughness (R a ) being 1.3 µm or more and 4.0 µm or less, Sheet for aerosol products.

2. In Paragraph 1, The median particle size (D) of the above tobacco substance 50 ) is 20 µm or more and 110 µm or less, Sheet for aerosol products.

3. In Paragraph 1, Based on the dry weight of the sheet for the aerosol product above, the content of the tobacco substance is 15% by weight or more and 40% by weight or less, Sheet for aerosol products.

4. In Paragraph 1, The above tobacco substance is: Including one or more types selected from the group consisting of Flue-cured, Burley, Oriental, Cigar, Latakia, Perique, and Cavendish Sheet for aerosol products.

5. In Paragraph 1, Under the condition that the length of a medium rod containing 1,380 mg of the above-mentioned aerosol product sheet is 72 mm and the circumference is 22 mm: The pressure drop of the above medium rod is 70 mm H2O or more and 120 mm H2O or less, Sheet for aerosol products.

6. In Paragraph 1, Basis weight 150 g / m² 2 250 g / m² or more 2 Lee Ha-in, Sheet for aerosol products.

7. In Paragraph 1, Includes more moisture, The above moisture content is 1 part by weight or more and 12 parts by weight or less per 100 parts by weight of the sheet for the aerosol product, Sheet for aerosol products.

8. In Paragraph 1, One or more additives selected from the group consisting of active substances, bulking agents, moisture regulators, fillers, casings, emulsifiers, and vitamin components; further comprising, Sheet for aerosol products.

9. In Paragraph 8, The above moisture regulator is: Compounds represented by the following chemical formula 1, Sheets for aerosol products: [Chemical Formula 1] In the above chemical formula 1: R1 is a hydrogen or hydroxyl group, and R2 to R4 are each independently carboxyl groups (-CO2H); ; or And, R 11 is a straight-chain or branched-chain alkyl group having 1 to 3 carbon atoms, and R 12 is a straight-chain or branched-chain alkyl group having 3 to 12 carbon atoms.

10. An aerosol product comprising a sheet for an aerosol product according to paragraph 1.

11. In Paragraph 10, The above aerosol product is: Part 1; A second part positioned on one side of the first part above; A third part disposed on one side of the second part above; and A fourth part disposed on one side of the third part; comprising, The above second part comprises the sheet for the aerosol product, Aerosol product.

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