Heated tobacco and electric heated tobacco inhalation systems

Abstract

A heated tobacco product comprising a flavor-generating segment, wherein the flavor-generating segment comprises a tobacco sheet and granules, and the granules are placed between the tobacco sheets.

Description

Technology Field

[0001] The present invention relates to a heated tobacco product and an electric heated tobacco inhalation system. Background Technology

[0002] A heated tobacco product is known to include a tobacco rod formed by filling a tobacco filler containing tobacco raw materials (e.g., tobacco sticks, tobacco granules, molded tobacco sheets, etc.) and an aerosol-forming agent (glycerol, propylene glycol, etc.) into the inside of a roll (e.g., see Patent Document 1). This type of heated tobacco product constitutes a tobacco article of the type that delivers an aerosol generated within the tobacco filler to the user by heating the tobacco filler with an electric heater of a heating device without burning the tobacco filler.

[0003] In addition, Patent Document 2 discloses a product in which tobacco leaves, tobacco sheets, or tobacco granules are filled into a flavor-generating segment for the purpose of improving the performance of a non-combustion heated flavor-inhaling article. Prior art literature

[0004] (Patent Document 0001) JP 2015-503335 AWO 2022 / 210885 A1 The problem to be solved

[0005] As disclosed in Patent Document 2, in order to further improve the inhalation response of the user in heated tobacco and electric heated tobacco inhalation systems, a review of fillers for conventional flavor-generating segments has been conducted.

[0006] However, with existing technology, it has not been easy to optimize the delivery amount of aerosols, flavor components, and tobacco components inhaled by the user (hereinafter also briefly referred to as "delivery amount"), because, for example, increasing the filling amount of tobacco components to increase the amount of delivered components actually reduces the delivery amount during the initial inhalation (initial puff). means of solving the problem

[0007] As a result of conducting thorough research to solve the above problem, the inventors found that by placing granules between layers of tobacco sheets within the flavor generating segment of a heated tobacco product, the amount of delivery can be adjusted and the delivery efficiency can be improved.

[0008] In other words, the gist of the present invention is as follows.

[0009] [1] A heated tobacco product containing a flavor-generating segment,

[0010] The flavor generating segment includes a tobacco sheet and granules, and

[0011] Heated tobacco, in which granules are placed between layers of a tobacco sheet.

[0012] [2] In [1], the tobacco sheets are crimped and then gathered-packed, and granules are interposed between the layers of the gathered-packed tobacco sheets, in a heated tobacco.

[0013] [3] In [1] or [2], the granules have a thermal conductivity of 0.10 W / mK to 250 W / mK, a heated tobacco.

[0014] [4] In any one of [1] to [3], the granules contain flavoring, a heated tobacco.

[0015] [5] In any one of [1] to [4], the granules contain tobacco flavoring components, heated tobacco.

[0016] [6] In any one of [1] to [5], the granules contain nicotine, heated tobacco.

[0017] [7] In any one of [1] to [6], the filling density of the tobacco sheet within the flavor-generating segment is 0.33 g / cm³ 3 Up to 0.76 g / cm³ 3 Phosphorus, heated tobacco.

[0018] [8] In any one of [1] to [7], the packing density of granules within the flavor-generating segment is 0.04 g / cm³ 3 Up to 0.22 g / cm 3 Phosphorus, heated tobacco.

[0019] [9] In any one of [1] to [8], the mass ratio of the tobacco sheet and granules in the flavor-generating segment is 60 / 40 to 95 / 5, for a heated tobacco product.

[0020]

[10] In any one of [1] to [9], the average particle size of the granules is 250 μm to 1000 μm, a heated tobacco product.

[0021]

[11] In any one of [1] to

[10] , the heated tobacco is a non-combustible heated tobacco.

[0022]

[12] A heated tobacco as disclosed in any one of [1] to

[11] ; and an electric heating device for heating the heated tobacco

[0023] An electric heating tobacco inhalation system including Effects of the invention

[0024] According to the present invention, it is possible to adjust the delivery amount and improve the delivery efficiency in heated tobacco and electric heated tobacco inhalation systems. Brief explanation of the drawing

[0025] FIG. 1 is a schematic diagram of a heated tobacco product according to one embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of a heated tobacco product according to one embodiment of the present invention. FIG. 3 is a schematic diagram of an electric heating tobacco inhalation system according to one embodiment of the present invention. Figure 4 is a diagram illustrating the configuration around the heating area in an electric heating device. Figure 5 is a diagram illustrating the configuration of the control unit. FIG. 6 is a schematic cross-sectional view of a flavor generating segment in a heated tobacco product according to one embodiment of the present invention. Figure 7 is a diagram showing the results of the examples and comparative examples. Figure 8 is a diagram showing the results of the examples and comparative examples. Specific details for implementing the invention

[0026] Embodiments of the present invention will be described in detail below, but such description is merely an example (ordinary example) of the embodiments of the present invention and is not limited to the content of such description within the scope of the present invention.

[0027] In this specification, a numerical value range indicated by "to" means a range that includes the numerical values ​​described before and after "to" as lower and upper limits, and "A to B" means greater than or equal to A and less than or equal to B.

[0028] Additionally, the expression "A or B" in this specification may also be understood as "at least one selected from the group consisting of A and B."

[0029] Additionally, while various embodiments will be described in this specification, various conditions of each embodiment may be applied to these embodiments within the applicable scope.

[0030] Additionally, the X, Y, and Z directions are illustrated in the drawings, with the lateral direction of the heated tobacco or electric heating device into which the heated tobacco is inserted being the X direction, the vertical direction being the Y direction, and the depth direction being the Z direction. These directions are given merely as examples for the convenience of explanation and do not limit the elements within the drawings. For example, the elements of an electric heated tobacco inhalation system are not limited to the arrangement directions shown in the drawings.

[0031] Hereinafter, a heated tobacco product according to such an embodiment will be described with reference to FIG. 1, but the embodiment is not limited to this aspect.

[0032] In addition, embodiments and the like are described in this specification with reference to the drawings, but the dimensions, materials, shapes, and relative positions of the components described in the drawings and the description of the embodiments are merely examples.

[0033] Heated Tobacco

[0034] A heated tobacco product according to one embodiment of the present invention comprises a flavor generating segment, wherein the flavor generating segment comprises a tobacco sheet and granules, and the granules are disposed between layers of the tobacco sheet. The heated tobacco product may be a non-combustible heated tobacco product.

[0035] One example of a heated tobacco product (100) according to the present embodiment is substantially in the form of a cylindrical rod. In the example illustrated in FIGS. 1 and 2, the heated tobacco product (100) comprises a flavor generating segment (110), a cooling section (120), a filter section (130), and a tipping paper (140) that integrally combines these components. The cooling section (120) and the filter section (130) are coaxially coupled to the flavor generating segment (110) by being wound together with the flavor generating segment (110) by the tipping paper (140).

[0036] Reference numeral 101 indicates the mouthpiece end (filter portion (130)) of the heated tobacco (100). Reference numeral 102 indicates the tip end opposite the mouthpiece end (101) of the heated tobacco (100). A flavor generating segment (110) is positioned on the tip end (102) side of the heated tobacco (100). In the example illustrated in FIGS. 1 and 2, the heated tobacco (100) has a substantially constant diameter along its entire length in the longitudinal direction (hereinafter also referred to as the axial direction or Z direction) from the mouthpiece end (101) to the tip end (102).

[0037] There are no special restrictions on the configuration of the heated tobacco (100), and it may take a general form. In the mode illustrated in FIG. 1, the flavor generating segment (110), the cooling section (120), and the filter section (130) are each illustrated as a single segment, but each of these parts may be formed as a single segment or multiple segments.

[0038] <Flavor Generation Segment>

[0039] There are no particular limitations on the flavor generating segment (110) according to an embodiment of the present invention, provided that it includes a tobacco sheet and granules and the granules are placed between the layers of the tobacco sheet.

[0040] As an example, a tobacco filling material (111) (the filling material including tobacco sheets and granules filled in the flavor-generating segment (110) may be briefly referred to as "tobacco filling material" below) may be used, wound into a roll (112).

[0041] Additionally, the flavor generating segment (110) may include a coupling portion that engages with a heating member, etc., for heating a heated tobacco product (100).

[0042] The flavor generating segment (110) preferably has a cylindrical shape, and in this case, the aspect ratio, expressed as the height in the long axis direction of the flavor generating segment (110) relative to the width of the bottom surface of the flavor generating segment (110), is preferably 1 or greater.

[0043] There are no restrictions on the shape of the bottom surface of the flavor generating segment (110), and it may be a polygon, a rounded polygon, a circle, or an ellipse, etc., where the width is the diameter when the bottom surface is circular, the major axis when the bottom surface is elliptical, the diameter of the circumscribed circle when the bottom surface is polygonal, and the major axis of the circumscribed ellipse when the bottom surface is a rounded polygon. The height of the flavor generating segment (110) is preferably about 10 to 70 mm, and the width is preferably about 4 to 9 mm.

[0044] The length of the flavor generating segment (110) in the long axis direction can be appropriately changed according to the size of the product, but is typically 10 mm or more, preferably 12 mm or more, more preferably 15 mm or more, and even more preferably 18 mm or more, and is also typically 70 mm or less, preferably 50 mm or less, more preferably 30 mm or less, and even more preferably 25 mm or less. In addition, the ratio of the length of the flavor generating segment (110) to the height (h) in the long axis direction of the flavor generating segment (110) is typically 10% or more, preferably 20% or more, more preferably 25% or more, and even more preferably 30% or more in terms of flavor delivery amount and aerosol temperature balance, and is also typically 60% or less, preferably 50% or less, more preferably 45% or less, and even more preferably 40% or less.

[0045] Cigarette Sheet

[0046] The tobacco sheet may be a reconstituted tobacco sheet, or it may be a tobacco powder formed by crushing dried tobacco leaves to an average particle size of 20 μm to 200 μm, then processing the homogenized material into a sheet (hereinafter also briefly referred to as a "homogenized sheet"), and subsequently cutting it into pieces. Additionally, a homogenized sheet having a length similar to that of the flavor-generating segment (110) in the longitudinal direction may be cut along the longitudinal direction of the flavor-generating segment (110) and substantially horizontally to obtain a material, which is then filled into the flavor-generating segment (110) to form a so-called "strand type" filler. Furthermore, although there is no particular limitation on the content of tobacco leaves within the flavor-generating segment (110), an example content of 200 mg to 800 mg may be given, and 250 mg to 600 mg is preferred. This range is particularly suitable when the flavor-generating segment (110) has a circumference of 22 mm and a length of 20 mm.

[0047] There are no specific restrictions on the method of filling the flavor-generating segment (110) into the cigarette sheet, and the cigarette sheet may be rolled into a roll (112) or filled into a roll (112) formed in a tubular shape. If the flavor-generating segment (110) is substantially rectangular in shape in the longitudinal direction, the flavor-generating segment (110) may be filled such that the longitudinal direction of the cigarette sheet is randomly oriented within the roll (112), or the longitudinal direction of the cigarette sheet may be filled such that it is aligned with the axial direction of the flavor-generating segment (110) or a direction perpendicular to the axial direction. Additionally, the tobacco sheet may be cut into widths of 0.5 mm to 2.0 mm (e.g., lengths of 5 mm to 40 mm) and filled in a random orientation, or the tobacco sheet may be cut into widths of 1.0 mm to 3.0 mm (e.g., lengths of 5 mm to 40 mm) and filled parallel to the airflow direction, or the tobacco sheet may be wound (processed to form longitudinal grooves) and then filled in a cluster. When the flavor generating segment (110) is heated, the tobacco components contained in the flavor generating segment (110) are vaporized, and these components are transferred to the cooling unit (120) and the filter unit (130) by the inhalation action.

[0048] It is particularly desirable that the cigarette sheet be wound and then bundled (in a form where multiple air circulation channels are provided along the length). When this form is adopted, the granules described below are easily placed between the layers of the cigarette sheet. In addition, by maintaining air passages in the direction of airflow, flavor components can be efficiently delivered to the user.

[0049] In addition, the cigarette sheet can be filled in a spiral shape.

[0050] The amount of tobacco sheet filled into the flavor-generating segment (110) varies depending on the size and shape of the flavor-generating segment (110), but in the case of one example where the flavor-generating segment (110) is in the shape of a rod with a long axis length of 12 mm × a diameter of 7 mm, the filling amount is generally 150 mg to 350 mg, preferably 200 mg to 250 mg.

[0051] The filling density of the tobacco sheet within the flavor-generating segment (110) is preferably 0.33 g / cm³ 3 Up to 0.76 g / cm³ 3 and, more preferably, 0.43 g / cm³ 3 Up to 0.54 g / cm³ 3 The tobacco sheet filling density within the above range enables sufficient delivery while limiting the total filling amount of tobacco components, thereby providing excellent delivery efficiency.

[0052] Granules

[0053] The granules according to the present embodiment are placed between the layers of the cigarette sheet and filled into the flavor-generating segment (110) together with the cigarette sheet. In particular, it is preferable that the granules are interposed between the layers of the cigarette sheet that are filled after being wound. This form is preferable because the granules do not easily fall out between the layers of the sheet. In addition, the surface area of ​​the cigarette filler and the air passage in the direction of airflow can be more easily secured.

[0054] The granules may be interposed uniformly between the sheet layers or unevenly between the sheet layers, but it is preferable that they be arranged as uniformly as possible for delivery purposes. That is, it is preferable that the granules be distributed in a way that maximizes the contact points between the granules and the cigarette sheet. Additionally, the granules may be filled between the layers of the cigarette sheet after the flavor-generating segment (110) is filled into the cigarette sheet.

[0055] The granules may be adhered to the sheet. Alternatively, when the flavor-generating segment (110) is formed into a rod shape, it may be retained sufficiently so that the granules do not leak out. Examples of adhesives for bonding the cigarette sheet and the granules include vinyl acetate-based adhesives as well as at least one adhesive selected from the group consisting of components commonly used in cigarette sheets, such as guar gum binder, xanthan gum, CMC (carboxymethyl cellulose), and CMC-Na (sodium carboxymethyl cellulose). Examples of retaining agents include aerosol sources, and at least one type of retaining agent may be selected from the group consisting of glycerol, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.

[0056] To improve delivery persistence, the amount of filling material containing tobacco components, such as tobacco sheets, is generally increased. However, if the amount of filling material is increased excessively, there is a risk of reducing delivery efficiency or reducing the amount delivered at the start of inhalation (initial puff). As in the present embodiment, by placing granules between the layers of the tobacco sheet, the surface area of ​​the tobacco filling material is increased, thereby improving delivery efficiency and initial puffing while ensuring sufficient persistence. Additionally, the granules can improve thermal conductivity between the layers of the sheet. Furthermore, as the likelihood of the layers of the sheet sticking together is reduced, sufficient air can flow between the layers of the sheet, thereby improving delivery efficiency.

[0057] FIG. 6 is a schematic diagram of a cross-section perpendicular to the longitudinal direction of a flavor-generating segment according to one embodiment of the present invention.

[0058] In FIG. 6, the tobacco sheet (62) is filled in a folded form within a flavor-generating segment wound into a roll (61), and granules (63) are filled between the layers of the tobacco sheet (62). Additionally, the granules (63) may be filled in a form interposed between the layers of the tobacco sheet (62).

[0059] There are no specific restrictions on the base material of the granules, but the base material preferably comprises at least one selected from the group consisting of calcium carbonate, activated carbon, and crystalline cellulose in terms of thermal conductivity. This base material can be formed into a granule form by known methods.

[0060] The thermal conductivity of the granules is preferably 0.10 W / mK to 250 W / mK, more preferably 1.0 W / mK to 5.0 W / mK. It is desirable for the thermal conductivity of the granules to be within the above range, as this allows the entire flavor-generating segment (110) to be heated efficiently.

[0061] By including other ingredients along with the basic material, various functions can be imparted to the granules.

[0062] Examples of other ingredients include at least one selected from the group consisting of flavorings, tobacco flavorings, and nicotine.

[0063] In terms of maintaining the ingredients, it is desirable to fill the flavor-generating segment (110) with granules that already have these ingredients.

[0064] As a method of incorporating other ingredients into granules, a method of mixing the basic material and other ingredients and then granulating the mixture may be used.

[0065] There are no specific restrictions on the types of flavorings, and in terms of imparting pleasant flavors, examples include acetanisol, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise oil, apple juice, Peruvian balsam oil, beeswax absolute, benzaldehyde, benzoin lecithinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil, carob absolute, β-carotene, carrot juice, L-carbon, β-caryophyllene, cassia bark oil, Chinese toon wood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, cinnamyl alcohol, and cinnamyl. Cinnamate, Citronella Oil, DL-Citronellol, Clary Sage Extract, Cocoa, Coffee, Cognac Oil, Coriander Oil, Cuminaldehyde, Davana Oil, δ-Decaractone, γ-Decaractone, Decanoic Acid, Dill Herb Oil, 3,4-Dimethyl-1,2-Cyclopentanedione, 4,5-Dimethyl-3-Hydroxy-2,5-Dihydrofuran-2-one, 3,7-Dimethyl-6-Octene Acid, 2,3-Dimethylpyrazine, 2,5-Dimethylpyrazine, 2,6-Dimethylpyrazine, 2-Ethyl Methylbutyrate, Ethyl Acetate, Ethyl Butyrate, Ethyl Hexanoate, Ethyl Isovalerate, Ethyl Lactate, Ethyl Laurate, Ethyl Levulinate, Ethyl Maltol, Ethyl Octanoate, Ethyl Oleate, ethyl palmitate, ethyl phenylacetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin, ethyl vanillin glucoside, 2-ethyl-3, (5 or 6)-dimethylpyrazine, 5-ethyl-3-hydroxy-4-methyl-2(5H)-furanone, 2-ethyl-3-methylpyrazine, eucalyptol, fenugreek absolute, gennet absolute, gentian root infusion, geraniol, geranyl acetate, grape juice, guaiacol, guava extract, γ-heptalactone, γ-hexalactone, hexanoic acid, cis-3-hexen-1-ol, hexyl acetate,Hexyl alcohol, hexyl phenyl acetate, honey, 4-hydroxy-3-penteneate lactone, 4-hydroxy-4-(3-hydroxy-1-butenyl)-3,5,5-trimethyl-2-cyclohexene-1-one, 4-(para-hydroxyphenyl)-2-butanone, sodium 4-hydroxyundecanate, Immortelle absolute, β-ionone, isoamyl acetate, isoamyl butyrate, isoamyl phenyl acetate, isobutyl acetate, isobutyl phenyl acetate, jasmine absolute, kola nut tincture, labdanum oil, lemon terpeneless oil, glycyrrhiza extract, linalool, linalyl acetate, lobage root oil, maltol, maple Syrup, Menthol, Menthone, L-Menthyl Acetate, Paramethoxybenzaldehyde, Methyl-2-Pyrrolyl Ketone, Methyl Anthranilate, Methyl Phenyl Acetate, Methyl Salicylate, 4'-Methylacetophenone, Methylcyclopenthenolone, 3-Methyl Valeric Acid, Mimosa Absolute, Molasses, Myristic Acid, Nerol, Nerolidol, γ-Nonalactone, Nootomeg Oil, δ-Octalactone, Octanal, Octanoic Acid, Orange Blossom Oil, Orange Oil, Orris Root Oil, Palmitic Acid, ω-Pentadecalactone, Peppermint Oil, Petitgrain Paraguay Oil, Phenethyl Alcohol, Phenethyl Phenyl Acetate, Phenyl Acetate, Piperonal, Plum Extract, Propenyl Guaetol, Propyl Acetate, 3-Propylidene Phthalide, Prune Juice, Pyruvic acid, raisin extract, rose oil, rum, sage oil, sandalwood oil, spearmint oil, Styrax absolute, marigold oil, tea distillate, α-terpineol, terpinyl acetate, 5,6,7,8-tetrahydroquinoxaline, 1,5,5,9-tetramethyl-13-oxacyclo(8.3.0.0(4.9))tridecane, 2,3,5,6-tetramethylpyrazine, thyme oil, tomato extract, 2-tridecanone, triethyl citrate, 4-(2,6,6-trimethyl-1-cyclohexenyl)-2-buten-2-one, 2,6,6-trimethyl-2-cyclohexene-1,4-dione, 4-(2,6,6-trimethyl-1,Examples include 3-cyclohexadienyl)-4-buten-4-one, 2,3,5-trimethylpyrazine, γ-undecharactone, γ-valerolactone, vanilla extract, vanillin, beratraldehydride, violet leaf absolute, N-ethyl-p-menthan-3-carbamide (WS-3), and ethyl-2-(p-menthan-3-carboxamide)acetate (WS-5), and menthol is particularly preferred. Additionally, one type of these flavorings may be used alone, or two or more types may be used in combination.

[0066] The granules can control the delivery of aroma components by containing fragrance.

[0067] Examples of tobacco flavor components include components derived from tobacco leaves, such as cut leaves. There are no specific restrictions on the materials used for the cut leaves, and known materials such as the lamina and midrib may be used.

[0068] By having granules containing tobacco flavor components, the delivery of tobacco flavor components can be controlled.

[0069] Various types of tobacco may be used for the tobacco leaves used in the production of tobacco sticks and tobacco sheets. Examples include flue-cured, Burley, orient or traditional varieties, as well as other Nicotiana tabacum and Nicotiana rustica varieties, and mixtures thereof. Appropriate blends of the aforementioned varieties may be used in mixtures to achieve the intended flavor. Details regarding tobacco varieties are disclosed in the literature [Encyclopedia of Tobacco, Tobacco Academic Studies Center, March 31, 2009]. There are several conventional methods for producing homogenized sheets, that is, for crushing tobacco leaves and processing them into homogenized sheets. According to the first method, a paper sheet is produced using a papermaking process. According to the second method, a suitable solvent, such as water, is mixed with crushed tobacco leaves to homogenize them, and then the homogenized material is thinly cast onto a metal plate or metal plate belt and dried to produce a cast sheet. According to the third method, a suitable solvent, such as water, is mixed with crushed tobacco leaves to homogenize them, and then the homogenized material is extruded into a sheet shape to produce a rolled sheet. Details regarding the types of homogenized sheets are disclosed in the literature [Encyclopedia of Tobacco, Tobacco Academic Studies Center, March 31, 2009].

[0070] The amount of granules filled into the flavor-generating segment (110) varies depending on the size and shape of the flavor-generating segment (110), but in the case of one example where the flavor-generating segment (110) is in the shape of a rod with a long axis length of 12 mm × a diameter of 7 mm, the filling amount is generally 20 mg to 100 mg, preferably 50 mg to 80 mg.

[0071] The filling density of the granules within the flavor-generating segment (110) is preferably 0.04 g / cm³ 3 Up to 0.22 g / cm 3 and, more preferably, 0.11 g / cm³ 3 Up to 0.17 g / cm³ 3 It is desirable that the packing density of the granules be within the above range in terms of delivery efficiency.

[0072] In addition, the mass ratio of the tobacco sheet and granules filled in the flavor-generating segment (110) (mass of tobacco sheet / mass of granules) is preferably 60 / 40 to 95 / 5, more preferably 70 / 30 to 80 / 20, in terms of such delivery efficiency.

[0073] The average particle size of the granules is preferably 250 μm to 1000 μm, more preferably 500 μm to 800 μm. When the granules have an average particle size of 250 μm or more, the effect of improving delivery efficiency can be appropriately achieved. In addition, when the average particle size of the granules is 1000 μm or less, the manufacture of the granules is easy.

[0074] The average particle size of the granules can be appropriately adjusted by adjusting the amount of base material, etc. contained in the granules. The average particle size is measured using a laser diffraction particle size measuring instrument such as Mastersizer (manufactured by Malvern).

[0075] The composition and method of manufacturing the granules are not limited to the examples described above, and may be, for example, the following composition and method of manufacturing.

[0076] Composition of granules

[0077] The components contained in the granules may comprise (A) 15 to 50 weight% of tobacco extract, (B) non-wood fiber, (C) binder, and (D) 10 to 60 weight% of an aerosol base, and the sum of (B) and (C) may be 23 to 50 weight%. Unless otherwise specified, weight and weight% are dry weight and dry weight%. Dry weight is the weight excluding the weight of water.

[0078] (1) Ingredient (A): Tobacco extract

[0079] Tobacco extract is a flavor-producing substance or mixture extracted from tobacco. Tobacco extract can be prepared by known methods. Examples of methods include: 1) a method of obtaining a tobacco extract by extracting a tobacco raw material using an extraction medium; 2) a method of adding an extraction medium to a tobacco raw material, heating the mixture, and collecting the resulting vapor; and 3) a method of passing a heat-vaporized extraction medium through a tobacco raw material and collecting the passed vapor. Examples of extraction media include water or a hydrophilic organic solvent (e.g., alcohol). In method 1), it is preferable to use water as the extraction medium from the perspective of workability. In methods 2) and 3), it is preferable to use propylene glycol, glycerol, or alcohol (e.g., ethanol) as the extraction medium from the perspective of work efficiency. Acids or alkalis may be used for extraction as needed. A liquid containing the tobacco extract and the extraction medium obtained by extraction is called a tobacco extract solution.

[0080] For example, raw materials of the genus Nicotiana, such as Nicotiana tabacum and Nicotiana rustica, can be used as tobacco raw materials. Examples of Nicotiana tabacum that can be used include varieties such as Burley tobacco and flue-cured tobacco. Traditional species of the genus Nicotiana, such as Burley tobacco or Oriental tobacco, may also be used.

[0081] The tobacco raw material may be a cut or powdered tobacco raw material (hereinafter also referred to as "raw material pieces"). In this case, the particle size of the raw material pieces is preferably 0.5 to 1.18 mm. Such raw material pieces are obtained, for example, by sieving in accordance with JIS Z 8815 using a stainless steel sieve in accordance with JIS Z 8801. For example, 1) the raw material pieces are sieved for 20 minutes by dry mechanical shaking using a stainless steel sieve having an opening of 1.18 mm to obtain raw material pieces passing through the stainless steel sieve having an opening of 1.18 mm. 2) Subsequently, the raw material pieces are sieved for 20 minutes by dry mechanical shaking using a stainless steel sieve having an opening of 0.50 mm to remove raw material pieces passing through the stainless steel sieve having an opening of 0.50 mm. By doing this, it is possible to manufacture a piece of raw material that passes through a stainless steel sieve of the specified upper limit (1.18 mm opening) and does not pass through a stainless steel sieve of the specified lower limit (0.50 mm opening).

[0082] In one embodiment, the tobacco raw material is treated with alkali. A flavor component generated by the above treatment can be captured to produce a tobacco extract containing tobacco extract and water. At this time, it is preferable that the flavor component be extracted in gaseous form from the alkali-treated tobacco raw material, and it is preferable to introduce the said gas into water to convert the flavor component into a liquid.

[0083] The alkaline substance is preferably an alkaline liquid (e.g., an aqueous solution of potassium carbonate). At this time, the alkaline substance is supplied until the pH of the tobacco raw material reaches a specific range. The pH is preferably 8.0 or higher, more preferably 8.9 to 9.7. The pH of the tobacco raw material is the pH of the water when the tobacco raw material is mixed with 10 times the amount of water.

[0084] Although there is no limit to the moisture content of the tobacco raw material, from the perspective of efficiently extracting flavor components, it is preferable that the moisture content be approximately 5 to 30 weight percent. The moisture content of the tobacco raw material can be measured by known methods, for example, the moisture content can be defined as the amount of weight loss when 1 g of a sample is collected and heated at 105°C until the rate of weight change becomes 1 mg / min or less. This can be measured, for example, using a moisture analyzer equipped with a halogen heating source (e.g., MB45 manufactured by OHAUS CORPORATION).

[0085] It is preferable that the tobacco flavor component has a tobacco extract content of 15 to 50 weight%. This amount can be appropriately adjusted, for example, to 20 to 40 weight%.

[0086] (2) Component (B): Non-wood fiber

[0087] Non-wood fibers are fibers that do not originate from wood, and it is preferable that they be fibers other than tobacco fibers. Dietary fibers are preferred as non-wood fibers. Dietary fibers are dietary components that are not digested by human digestive enzymes, and it is more preferable that they be insoluble dietary fibers that do not dissolve in water. Dietary fibers may be porous, that is, sponge-like. Porous fibers can increase the surface area of ​​the granules and improve thermal conductivity. From the perspective of ease of availability, it is preferable that the fibers be citrus fibers. Citrus fibers are fibers composed mainly of the mesocarp of citrus fruits. Additionally, dietary fibers may be short fibers or columnar particles with a small aspect ratio. Citrus fibers are particularly preferred because they can increase the strength of the sheet with a small amount. The moisture content of the non-wood fibers is measured, and the amount of non-wood fibers is determined to satisfy the relationship of moisture content described below. The moisture content of the non-wood fibers is measured by a known method, for example, in the same method as the method used to measure the moisture content of tobacco raw materials. In one embodiment, the content of component (B) in the granules is 10 to 30 weight percent. Although wood fibers are known fibrous materials, using non-wood fibers has the advantage of having a superior liquid-carrying capacity compared to using wood fibers. Therefore, the amount of non-wood fibers added can be reduced to increase the amount of components that contribute to the smoking flavor.

[0088] (3) Component (C): Binder

[0089] Examples of binders include carboxyalkyl cellulose and guar gum. The moisture content of the binder is measured by known methods, for example, in the same way as the moisture content of tobacco raw materials.

[0090] It is preferable that the total amount of component (B) and component (C) in the sheet be 23 to 50 weight%. If the amount is above the lower limit, the handling properties of the granules may be improved, and the strength of the granules may also be sufficiently stronger. Furthermore, if the amount is below the upper limit, sufficient flavor is produced or off-flavors are suppressed. In this regard, the lower limit of the total amount is preferably 24 weight% or more, and the upper limit is preferably 40 weight% or less, more preferably 30 weight% or less. Although the amounts of component (B) and component (C) are determined to satisfy the total amount mentioned above, in one embodiment, the amount of component (B) is 10 to 30 weight% or 13 to 25 weight%, and the amount of component (C) is 13 to 20 weight% or 10 to 25 weight%.

[0091] (4) Component (D): Aerosol base

[0092] Examples of aerosol materials include polyhydric alcohols (e.g., glycerol and polyethylene glycol). The moisture content of the aerosol material is measured by a known method, for example, in the same way as the method used to measure the moisture content of tobacco raw materials. The amount of aerosol material in the granules is 10 to 60 weight percent. If the amount is above the lower limit, a sufficient amount of smoke is produced upon smoking. If the amount is below the upper limit, the handling properties of the granules are improved. In this regard, the amount is preferably 15 to 50 weight percent, more preferably 20 to 40 weight percent.

[0093] (5) Other substances

[0094] The granules may contain wood fibers. Examples of wood fibers include softwood pulp, Vitacel FL400, and Vitacel L600 / 30 (both manufactured by J. Rettenmaier & Soehne GmbH). The mixture for preparing the granules preferably contains water, and the weight ratio of water to non-water components is preferably (0.2 to 1) : 1. Preferably, the moisture content of the wood fibers is measured, and the amount of wood fibers is determined to satisfy this relationship. The moisture content of the wood fibers is measured by a known method, for example, in the same method as the moisture content of tobacco raw materials. In one embodiment, the content of wood fibers in the granules is 1 to 10 weight percent.

[0095] Method for manufacturing granules

[0096] The granules of the present embodiment are preferably manufactured by the following method, which comprises the step (1A) of preparing a mixture of a tobacco extract containing component (A) and components (B), (C), and (D); and the step (2A) of granulating the mixture.

[0097] (1) Step 1A

[0098] (1-1) Preparation of tobacco extract

[0099] In this step, the aforementioned tobacco raw material is extracted to prepare a tobacco extract containing an active ingredient and an extraction medium. It is preferable to use water as the extraction medium. Although there are no restrictions on the extraction temperature, from the perspective of smoking flavor, it is preferably 60 to 100°C, more preferably 70 to 90°C. The extraction time is preferably 20 to 40 minutes.

[0100] (1-2) Mix

[0101] Mixing can be performed by known methods; for example, the mixture can be prepared by mixing the components in a mixer. The mixture preferably contains water, and the weight ratio of water to non-water components is preferably (0.2 to 1) : 1. The water may be water contained in the tobacco extract or other water added. In particular, it is desirable that the moisture content also increase as the content of non-wood fibers increases.

[0102] (2) Step (2A)

[0103] In step (2A), the same method as in step 2 described above may be used. Specifically, in step (2A), the mixture obtained in step 1A is granulated (into a long, cylindrical shape) using a wet extrusion granulator, and then the shape is adjusted into a short cylindrical shape or a spherical shape. The extrusion pressure during extrusion granulation can be freely set according to the viscosity of the mixture, etc.

[0104] Tobacco granules obtained through extrusion granulation may be further dried as needed to adjust moisture content. For example, the drying loss of the granules obtained by extrusion granulation can be measured, and if the drying loss is higher than the desired drying loss (e.g., 5% to 17% by weight), the granules may be further dried to obtain the desired drying loss. Drying conditions (temperature and time) required to achieve a specific drying loss may be predetermined, and based on these conditions, drying conditions (temperature and time) to achieve the desired drying loss may be set.

[0105] Examples of the amount of moisture contained in the tobacco filler include 10% to 15% by weight, preferably 11% to 13% by weight, based on the total weight of the tobacco filler. Such moisture content prevents the occurrence of coil contamination and improves rolling suitability during the manufacture of the flavor-generating segment (110). There are no special restrictions on the size of the tobacco leaves contained in the tobacco filler or the method of manufacturing them. For example, a material obtained by cutting dried tobacco leaves into widths of 0.5 mm to 2.0 mm may be used. In addition, when using crushed material in a homogenized sheet, dried tobacco leaves may be crushed to an average particle size of about 20 μm to 200 μm, and then the crushed tobacco may be homogenized to form a sheet, and then this sheet may be cut into widths of 0.5 mm to 2.0 mm for use.

[0106] In addition, the tobacco filler may include an aerosol substrate. The aerosol substrate is a substrate that generates an aerosol upon heating, and examples thereof include glycerol, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.

[0107] There is no special limit on the amount of aerosol material included in the tobacco filler, and this amount is generally 5% by weight or more, preferably 10% by weight or more, and generally 50% by weight or less, preferably 15% by weight or more and 25% by weight or less, with respect to sufficient aerosol generation and good flavor imparting.

[0108] The tobacco filler may contain a flavoring, separate from the flavoring contained in the granules.

[0109] There are no special limitations on the amount of flavoring contained in the tobacco filler, and from the perspective of imparting good flavor, the content is generally 10,000 ppm or more, preferably 20,000 ppm or more, more preferably 25,000 ppm or more, and generally 70,000 ppm or less, preferably 50,000 ppm or less, more preferably 40,000 ppm or less, and more preferably 33,000 ppm or less.

[0110] Method for manufacturing heated tobacco

[0111] There are no specific limitations on the method of manufacturing a heated tobacco product according to the present embodiment, and a combination of known methods may be applied. As an example, a tobacco sheet is extruded from a roller and wound, granules are added to the tobacco sheet, and then the tobacco sheet is wound with a roll to produce a rod-shaped flavor-generating segment (110). At this stage, an aerosol source such as glycerol may be added as needed. Then, the flavor-generating segment (110), the cooling section (120), and the filter section (130) can be wound with a tipping paper (140) to manufacture a heated tobacco product.

[0112] Electric Heated Tobacco Inhalation System

[0113] The aforementioned heated tobacco (100) can be used together with an electric heating device that heats the heated tobacco. That is, an electric heated tobacco inhalation system, which is another embodiment of the present invention, includes the aforementioned heated tobacco and an electric heating device that heats the heated tobacco.

[0114] There are no special limitations on the configuration of the electric heating tobacco inhalation system, and it may have a configuration as shown in FIGS. 3 and FIGS. 4, for example. FIGS. 3 is a drawing illustrating the internal structure of the electric heating tobacco inhalation system (200). It should be noted that the heated tobacco article (100) in FIGS. 3 is a schematic illustration of the heated tobacco (100) in FIGS. 1.

[0115] The electric heating tobacco inhalation system (200) includes an electric heating device (30) that heats a heated tobacco (100) and a flavor-generating segment (110) of the heated tobacco (100). The heated tobacco (100) is received within the receiving cavity (313) of the receiving portion (310) in such a manner that it can be inserted into and removed from the receiving cavity (313) through the insertion port (3A) of the electric heating device (30).

[0116] When a user uses an electric heating device (30), a heated cigarette (100) is inserted into a receiving cavity (313), and in this state, a heater provided within the receiving portion (310) generates heat to heat the flavor source within the heated cigarette (100), thereby producing an aerosol containing components similar to the cigarette components to be inhaled by the user.

[0117] Additionally, the heater may directly heat the flavor generating segment (110), but the heater may also heat an aerosol generating source within the heated cigarette (100) to supply the heated aerosol to the flavor generating segment (110), and this heated aerosol may subsequently be inhaled by the user by further heating the tobacco components, etc., within the flavor generating segment (110).

[0118] The electric heating device (30) includes a housing (31) which is a casing for accommodating various components. The housing (31) accommodates a heater (32), a temperature sensor (35), a suction sensor (36), a control unit (37), and a power source (38), etc.

[0119] [Reception Department]

[0120] The housing (31) includes a receiving portion (310) that accommodates the heated tobacco (100) in such a way that the heated tobacco (100) can be inserted and removed from the front end toward the rear end. The receiving portion (310) includes a cylindrical outer wall (312) that extends in the direction in which the heated tobacco (100) is inserted / removed and defines the outer periphery of the space into which the heated tobacco (100) is inserted; and a disc-shaped rear wall (311) that closes the rear end of the outer wall (312) to define the rear end of the space. The outer wall (312) or the rear wall (311) of the receiving portion (310) may be formed integrally with the housing (31) or may be formed separately from the housing (31) and assembled to the housing (31).

[0121] The open end of the outer wall (312) of the receiving portion (310) is open toward the outside of the housing (31) and serves as an insertion port (3A) for inserting a heated tobacco (100). Additionally, the space within the outer wall (312) is a cylindrical receiving cavity (313) through which the tip portion of the heated tobacco (100) can be inserted and removed through the insertion port (3A). In FIG. 4, reference numeral CL indicates the central axis of the receiving cavity (313) in the direction in which the heated tobacco (100) is inserted / removed. Hereinafter, the direction along the central axis (CL) is also referred to as the axial direction. The outer diameter of the receiving cavity (313), that is, the inner diameter of the outer wall (312), may be equal to, slightly larger than, or slightly smaller than the outer diameter of the heated tobacco (100).

[0122] A heater (32) is provided around the outer wall (312) of the receiving portion (310). The outer wall (312) and the rear wall (311) of the receiving portion (310) are formed of a material that withstands the heat of the heater (32) and also transfers the heat of the heater (32) to the heated cigarette (100). Examples of such materials that can be used in the receiving portion (310) include metals such as stainless steel and heat-resistant resins. The heater (32) can be placed within the outer wall (312).

[0123] [Heater]

[0124] The heater (32) receives power from the control unit (37) and generates heat to heat the heated cigarette (100) contained in the receiving portion (310). That is, the heater (32) is a form of a heating unit that heats the heated cigarette (100).

[0125] Additionally, there are no special restrictions on the type of heater (32), and examples that can be used include a heater in which a heating wire (e.g., a wire with high electrical resistance such as nichrome, iron-chrome, or iron-nickel) is placed in a steel material, or a ceramic heater or a sheath heater. It should be noted that a sheath heater is a heater in which the heat-generating wire is covered with a metal pipe along with a filler material.

[0126] FIG. 4 illustrates a state in which a heated tobacco product (100) is inserted into a receiving cavity (313). In this state, the heater (32) receives power from the control unit (37) as described below and heats the flavor generating segment (110) to a predetermined temperature. Here, the space within the receiving cavity (313) that is heated to a predetermined temperature by the heat of the heater (32) is defined as a heating area (A1), and the space adjacent to the insertion port side of the heating area (A1) in the axial direction (insertion / removal direction) is defined as a non-heating area (A2). The non-heating area (A2) is formed on the insertion port side of the receiving cavity (313), and the heating area (A1) is formed on the lower side of the receiving cavity (313). Here, the heater (32) is positioned around or inside the outer wall (312) of the heating area (A1) and heats the heating area (A1) from the outside. It should be noted that the heater (32) heats not only the contacted portion but also portions away from the heater (32) by radiation or heat transfer. For example, the heater (32) heats to a predetermined temperature in the axial direction from the front end of the heater (32) to the position (317) on the insertion port side. Accordingly, the heating area (A1) is the area from the position (317) to the rear wall (311) in the axial direction of the receiving portion (310). That is, the position (317) is the boundary between the heating area (A1) and the non-heating area (A2), and the non-heating area (A2) extends in the axial direction from the boundary (317) to the front end of the receiving cavity (313). It should be noted that the boundary (317) may be defined as a boundary between a region that reaches a predetermined temperature when actually heated by the heater (32) and a region that is below the predetermined temperature, or it may be defined as an estimated boundary obtained by estimating the boundary between a region that reaches a predetermined temperature and a region that is below the predetermined temperature when the heater (32) generates heat under predetermined conditions.In this embodiment, it should be noted that a boundary location between the region where the outer wall (312) reaches a predetermined temperature and the region where the outer wall (312) is below a predetermined temperature is estimated, and a plane passing through this boundary location and perpendicular to the central axis (CL) is defined as a boundary (317), as shown by the dashed line in FIG. 4. When the heated tobacco (100) is inserted into the receiving cavity (313), the flavor generating segment (110) is located in the heating region (A1), and at least a part of the cooling portion (120) is located in the non-heating region (A2). When the heated tobacco (100) is inserted into the receiving cavity (313) in a predetermined state, for example, until the tip portion (102) of the heated tobacco (100) comes into contact with the rear wall (311) of the receiving portion (310), the portion of the receiving cavity (313) where the flavor generating segment (110) is located can be defined as a heating area (A1), and the portion where the cooling portion (120) is located can be defined as a non-heating area (A2).

[0127] [Control Unit]

[0128] FIG. 5 illustrates the configuration of a control unit (37). The control unit (37) controls the operating state of an electric heating device (30), such as heating control by a heater (32). The control unit (37) is a computer comprising a processor (71), such as a CPU (Central Processing Unit), DPS (Digital Signal Processor), or FPGA (Field Programmable Gate Array), memory (72), such as RAM (Random Access Memory) or ROM (Read Only Memory), and an input / output unit (73). Additionally, the control unit (37) includes a driving circuit (74) for the heater (32).

[0129] The memory (72) may each include a unit functioning as a main memory unit (721) and a unit functioning as an auxiliary memory unit (722). Additionally, the memory (72) may be formed integrally with the processor (71) (as a single chip). Examples of the memory (72) include volatile memory such as RAM, non-volatile memory such as ROM, EPROM (Erasable Programmable ROM), SSD, and storage media such as removable media.

[0130] In the memory (72), an operating system (OS) for executing the operation of the electric heating device (30), various programs (firmware), various data tables, various databases, setting data, and user data can be stored.

[0131] The input / output unit (73) is a means for inputting information, such as power ON / OFF from a user (smoker), to the processor (71) or outputting information to the user. The input / output unit (73) is an interface for, for example, operating a temperature sensor (35) and an inhalation sensor (36) at a predetermined timing and obtaining detection values ​​from each sensor (35, 36). Additionally, the input / output unit (73) may include input means such as an operation button or a touch panel, and output means such as a display unit, a vibrator, and a speaker. The input / output unit (73) may also include a communication unit for communicating with an external device via a communication line. For example, the communication unit may be connected to another computer via a communication cable to receive programs and data for controlling the electric heating device (30) and store them in memory (72), thereby updating firmware or heating profiles, etc. The display unit is a means for displaying information and may be, for example, an indicator such as an LED, a liquid crystal display, or an organic EL display.

[0132] The driving circuit (74) operates the heater (32) by supplying power from the power supply (38) to the heater (32) according to the command of the processor (71). The driving circuit (74) is, for example, a converter that adjusts the amount of current flowing to the heater (32).

[0133] The control unit (37) reads a program stored in memory (72) by the processor (71) into the working area of ​​the main memory unit and executes it, and functions as a predetermined function unit, for example, a determination unit (711), a heating control unit (712), and an output control unit (713). In addition, these function units are not limited to being realized based on a program (software), and some or all of these function units may be configured using hardware circuits such as a processor, an integrated circuit, and a logic circuit.

[0134] The determination unit (711) determines information such as operation by a user, the state of the heated cigarette (100), and the heating situation by the heater (32) based on the detection results of each sensor (35, 36) and information input from the input means. For example, the determination unit (711) measures the number of inhalations from the detection value by the inhalation sensor (36) and determines whether the number of inhalations has reached a predetermined number.

[0135] The heating control unit (712) controls the power supplied from the power source (38) through the driving circuit (74) to the heater (32) by controlling the driving circuit (74) based on the determination result of the determination unit (711). For example, when the determination unit (711) determines that the number of suctions has reached a predetermined number, the heating control unit (712) terminates the heating. Additionally, when the determination unit (711) determines that the amount of flavor source or moisture in the flavor generating segment (110) has decreased to a predetermined amount, the heating control unit (712) changes the heating temperature by changing the power supplied to the heater (32). Additionally, when the determination unit (711) determines that the amount of flavor source or moisture in the flavor generating segment (110) has decreased and has reached a state to terminate heating, the heating control unit (712) terminates the heating by stopping the power supply to the heater (32).

[0136] The output control unit (713) outputs a notification, warning, etc. to the user based on the decision result of the decision unit (711). For example, the output control unit (713) outputs a signal when the remaining number of suctionable suctions becomes less than or equal to a predetermined number, and the output control unit (713) provides an output to the user in the form of, for example, a display on a display unit, sound output by a speaker, or vibration by a vibrator.

[0137] The length of the heater (32) in the long axis direction may be in the range of L ± 5.0 mm, where L mm is the length of the flavor generating segment (110) in the long axis direction. The length of the heater (32) in the long axis direction is preferably L mm or greater from the perspective of aerosol delivery, that is, from the perspective of ensuring sufficient heat transfer to the flavor generating segment (110) and ensuring sufficient volatilization of the aerosol base material and flavor components contained in the flavor source, and is preferably L+0.5 mm or less, L+1.0 mm or less, L+1.5 mm or less, L+2.0 mm or less, L+2.5 mm or less, L+3.0 mm or less, L+3.5 mm or less, L+4.0 mm or less, L+4.5 mm or less, or L+5.0 mm or less from the perspective of suppressing the generation of components that have an undesirable effect on the flavor.

[0138] The heating intensity provided by the heater (32), that is, the time and temperature at which the heated cigarette (100) is heated, can be preset for each electric heated cigarette inhalation system (200). For example, heating can be preset in such a way that after inserting the heated cigarette (100) into the electric heating device (30), it is preheated for a certain period of time until the temperature of the outer surface of the part of the heated cigarette (100) inserted into the electric heating device (30) reaches X (°C), and then the temperature is maintained at a constant temperature below X (°C).

[0139] The temperature X (°C) is preferably 80°C to 400°C in terms of the amount of component transferred by heating. Specifically, the temperature may be 80°C, 90°C, 100°C, 110°C, 120°C, 130°C, 140°C, 150°C, 160°C, 170°C, 180°C, 190°C, 200°C, 210°C, 220°C, 230°C, 240°C, 250°C, 260°C, 270°C, 280°C, 290°C, 300°C, 310°C, 320°C, 330°C, 340°C, 350°C, 360°C, 370°C, 380°C, 390°C, or 400°C.

[0140] The opening (103) provided in the cooling section (120) is preferably provided closer to the mouthpiece end side of the cooling section (120) than to the mouthpiece end side of the area of ​​the cooling section (120) in contact with the electric heating device (30), in order to promote the inflow of external air and to prevent components and air generated by heating from remaining in the cooling section (120). Additionally, the insertion port (3A) of the electric heating device (30) for the heated cigarette (100) may be tapered to facilitate the insertion of the heated cigarette (100).

[0141] The description above with reference to FIG. 4 relates to an embodiment in which a heater is used as a means for heating a heated cigarette (100), specifically, an embodiment in which the heated cigarette (100) is heated from the outside when the heated cigarette (100) is inserted into an electric heating device. However, the means for heating the heated cigarette (100) is not limited to such means, and, for example, a rod-shaped or spindle-shaped heater may be used, and an embodiment may be adopted in which the heater is inserted into the flavor-generating segment (110) of the heated cigarette (100) when the heated cigarette (100) is inserted into an electric heating device to heat the heated cigarette (100) from the inside. Additionally, it is possible to adopt an embodiment in which an inductor is provided as a heater, and a susceptor, etc. for heating a flavor source is introduced into the flavor-generating segment (110) of the heated cigarette (100). In this embodiment, power can be supplied to the inductor by the output control unit (713), and the flavor source, etc. can be heated by the susceptor being heated by induction heating. Additionally, an embodiment including a microwave generator as a heater may be adopted. In this embodiment, power can be supplied to the microwave generator by the output control unit (713), and the flavor source, etc. within the flavor generation segment (110) can be heated by microwave heating.

[0142] Examples

[0143] The present invention will be explained more specifically below through examples, but the present invention is not limited to what is described in the following examples without departing from the gist thereof.

[0144] Materials for Heated Tobacco

[0145] · Tobacco sheet: Prepared from a composition comprising glycerol added as an aerosol-forming substrate in an amount of 12 weight% based on the total composition and crushed tobacco, with a thickness of 248 μm and 200 g / m² 2Rolled sheet having a basis weight of

[0146] · Granules: A mixture of calcium carbonate and carboxymethyl cellulose (binder) in a weight ratio of 95:5, having a thermal conductivity of 2.70 W / mK and an average particle size of 500 μm.

[0147] Evaluation Method

[0148] The heated tobacco products prepared in the examples and comparative examples were inserted into a commercially available electric heating device (Ploom X manufactured by Japan Tobacco Inc.), the device was turned on, and a smoking test was initiated after smoking became possible.

[0149] The smoking test was performed using a 1-port smoker manufactured by Borgwaldt, for 10 puffs at 30-second intervals under conditions of 55 mL / 2 seconds per puff. The alcohol smoke generated during the smoking test was collected on a Cambridge filter pad, and the amount of nicotine and aerosol delivered was measured from the weight of the Cambridge filter pad for each puff and gas chromatography.

[0150] [Example 1]

[0151] The sheet was extruded from a roller and wound. After additionally adding granules to the tobacco sheet, the tobacco sheet was wound together with the granules within a roll to produce a cylindrical flavor-generating segment.

[0152] The flavor-generating segment had a circumference of 22 mm and a length of 12 mm, the width of the tobacco sheet was 85 mm, the amount of the filled tobacco sheet was 204 mg, and the amount of the filled granules was 80 mg.

[0153] A heated tobacco product was obtained by arranging a tip segment, a flavor generating segment, a cooling section, and a filter section in the order described above, starting from the end furthest from the mouthpiece end, and then winding them with tipping paper and coaxially joining them. A paper filter with a length of 8 mm was used as the tip segment, a hollow tube with a length of 20 mm was used as the cooling section, and a filter (Mevius Deep Regular for Ploom X) from a heated tobacco product used in Ploom X (product name, manufactured by Japan Tobacco Inc.) was used as the filter section.

[0154] The above smoking test was performed using the obtained heated tobacco product, and the delivery amount was evaluated. The results are shown in Table 1.

[0155] [Comparative Example 1]

[0156] A heated tobacco product was prepared and evaluated in the same manner as in Example 1, except that the tobacco sheet had a width of 95 mm and was filled with 228 mg, and the flavor-generating segment was not filled with granules. The results are shown in Table 1.

[0157] [Table 1]

[0158]

[0159] Figures 7 and 8 are graphs of the results of Table 1. From the results of Table 1 and Figures 7 and 8, it can be seen that the heated tobacco of Example 1 achieved the same degree of delivery as Comparative Example 1, even though it was filled with a smaller amount of tobacco sheet.

[0160] That is, the heated tobacco product containing granules according to the present embodiment has superior delivery efficiency and achieves a superior inhalation response. Explanation of the symbols

[0161] 100 Heated tobacco 101 mouthpiece end 102 tip 103 Opening 110 Flavor generation segment 111 Tobacco filler 112 Volume 1 120 cooling section 130 filter section 140 tipping paper 150 filter media 160 Filter paper 170 Additive release container R1 Lip release material placement area 200 Electric heating tobacco inhalation system 30 electric heating device 31 Housing 310 reception 311 rear wall 312 Outer wall 313 Acceptance joint 32 Heater 35 Temperature sensor 36 suction sensor 37 Control unit 38 everyone 71 processor 711 Decision unit 712 Heating control unit 713 Output control unit 72 memory 721 Main memory unit 722 Auxiliary memory unit 73 Input / Output Unit 74 Driving circuit 61 Volume 1 62 cigarette sheets 63 granules

Claims

Claim 1 A heated tobacco product comprising a flavor generating segment, wherein the flavor generating segment comprises a tobacco sheet and granules, and the granules are disposed between layers of the tobacco sheet. Claim 2 A heated tobacco product according to claim 1, wherein the tobacco sheet is compressed and then filled, and the granules are interposed between the layers of the compressed and filled tobacco sheet. Claim 3 A heated tobacco product according to claim 1 or 2, wherein the granules have a thermal conductivity of 0.10 W / mK to 250 W / mK. Claim 4 A heated tobacco product according to any one of paragraphs 1 to 3, wherein the granules contain a flavoring. Claim 5 In any one of paragraphs 1 to 4, the granules are a heated tobacco product containing tobacco flavoring components. Claim 6 In any one of claims 1 to 5, the granules are a heated tobacco product containing nicotine. Claim 7 In any one of claims 1 to 6, the filling density of the tobacco sheet within the flavor-generating segment is 0.33 g / cm³ 3 Up to 0.76 g / cm³ 3 Phosphorus, heated tobacco. Claim 8 In any one of claims 1 to 7, the filling density of the granules within the flavor-generating segment is 0.04 g / cm³ 3 Up to 0.22 g / cm 3 Phosphorus, heated tobacco. Claim 9 A heated tobacco product according to any one of claims 1 to 8, wherein the mass ratio of the tobacco sheet and the granules within the flavor generating segment is 60 / 40 to 95 / 5. Claim 10 A heated tobacco product according to any one of claims 1 to 9, wherein the average particle size of the granules is 250 μm to 1000 μm. Claim 11 In any one of paragraphs 1 to 10, the heated tobacco is a non-combustible heated tobacco. Claim 12 An electric heating tobacco inhalation system comprising: a heated tobacco as claimed in any one of claims 1 to 11; and an electric heating device for heating the heated tobacco.

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