Heated tobacco and electrically-heated tobacco inhalation system

Abstract

A heated tobacco comprising a flavor generation segment, wherein the flavor generation segment includes tobacco sheets and granules, and the granules are disposed between the tobacco sheets.

Description

Heated tobacco and electrically heated tobacco smoking systems

[0001] The present invention relates to heated tobacco products and electrically heated tobacco smoking systems.

[0002] There is known a heated tobacco product having a tobacco rod formed by filling a tobacco filler material containing tobacco raw materials (e.g., tobacco shreds, tobacco granules, a molded tobacco sheet, etc.) and an aerosol-generating base material (e.g., glycerin, propylene glycol, etc.) inside a cigarette paper (see, for example, Patent Document 1). This type of heated tobacco product is a type of tobacco product in which the tobacco filler material is heated by an electric heater in a heating device without being burned, and an aerosol generated in the tobacco filler material is delivered to the user.

[0003] Furthermore, Patent Document 2 describes a product in which tobacco leaves, tobacco sheets, tobacco granules, etc. are filled into a flavor generating segment with the aim of improving the performance of a non-combustion heating-type flavor inhalation article.

[0004] Patent Publication No. 2015-503335 International Publication No. 2022 / 210885

[0005] As disclosed in Patent Document 2, in order to further improve the smoking experience for users in heated tobacco products and electrically heated tobacco smoking systems, studies have been conducted on the filler in the flavor generation segment. However, in the conventional technology, when the filling amount of tobacco components is increased in order to increase the delivery amount of aerosol, flavor components, tobacco components, etc. inhaled by the user (hereinafter simply referred to as "delivery amount"), the delivery amount at the beginning of smoking (initial puff) is actually reduced, and it is not easy to adjust the optimal delivery.

[0006] As a result of extensive research to solve the above problems, the inventors discovered that by placing granules between the tobacco sheets in the flavor generation segment of a heated tobacco product, it is possible to adjust the delivery amount and improve the delivery efficiency.

[0007] That is, the gist of the present invention is as follows. [1] A heated tobacco comprising a flavor generation segment, wherein the flavor generation segment includes a tobacco sheet and granules, and the granules are disposed between the tobacco sheets. [2] The heated tobacco according to [1], wherein the tobacco sheet is crimped and then gathered and filled, and the granules are sandwiched between the gathered and filled tobacco sheets. [3] The heated tobacco according to [1] or [2], wherein the thermal conductivity of the granules is 0.10 W / mK to 250 W / mK. [4] The heated tobacco according to any one of [1] to [3], wherein the granules contain a flavoring. [5] The heated tobacco according to any one of [1] to [4], wherein the granules contain a tobacco flavor component. [6] The heated tobacco according to any one of [1] to [5], wherein the granules contain nicotine. [7] The packed density of the tobacco sheet in the flavor generation segment is 0.33 g / cm ３ ~0.76 g / cm ３ [8] The heat-not-burn tobacco according to any one of [1] to [6], wherein the packing density of the granules in the flavor generating segment is 0.04 g / cm ３ ~0.22 g / cm ３ [9] The heated tobacco according to any one of [1] to [8], wherein the mass ratio of the tobacco sheet to the granules in the flavor generation segment is 60 / 40 to 95 / 5.

[10] The heated tobacco according to any one of [1] to [9], wherein the average particle size of the granules is 250 μm to 1000 μm.

[11] The heated tobacco according to any one of [1] to

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

[12] An electrically heated tobacco smoking system comprising the heated tobacco according to any one of [1] to

[11] , and an electrically heated device that heats the heated tobacco.

[0008] According to the present invention, it is possible to adjust the delivery amount and improve the delivery efficiency in heated tobacco products and electrically heated tobacco smoking systems.

[0009] FIG. 1 is a schematic diagram of a heated tobacco product according to an embodiment of the present invention. FIG. 2 is a cross-sectional schematic diagram of a heated tobacco product according to an embodiment of the present invention. FIG. 3 is a schematic diagram of an electrically heated tobacco suction system according to an embodiment of the present invention. FIG. 4 is a diagram for explaining the configuration of the periphery of a heating region in an electrically heated device. FIG. 5 is a diagram for explaining the configuration of a control unit. FIG. 6 is a cross-sectional schematic diagram of a flavor generation segment of a heated tobacco product according to an embodiment of the present invention. FIG. 7 is a diagram showing the results of examples and comparative examples. FIG. 8 is a diagram showing the results of examples and comparative examples.

[0010] The following describes embodiments of the present invention in detail. However, these descriptions are merely examples (representative examples) of embodiments of the present invention, and the present invention is not limited to these descriptions as long as they do not depart from the gist of the present invention. In this specification, a numerical range expressed using "to" means a range that includes the numerical values ​​before and after "to" as the lower and upper limits, and "A to B" means a range between A and B. Furthermore, the expression "A or B" in this specification may be interpreted as "at least one selected from the group consisting of A and B." Furthermore, although multiple embodiments are described in this specification, various conditions in each embodiment may be applied to each other to the extent applicable. Furthermore, while the X, Y, and Z directions are shown in some of the drawings, the left-right direction of the heated tobacco product or the electrically heated device into which the heated tobacco product is inserted is designated as the X direction, the up-down direction as the Y direction, and the depth direction as the Z direction. These directions are merely illustrative for the sake of convenience and do not limit the elements in the figures. For example, the elements of the electrically heated tobacco smoking system are not limited to being arranged in the directions shown in the figures.

[0011] The heated tobacco product according to this embodiment will be described below with reference to the drawings, but this embodiment is not limited to this. Note that although the present specification may use drawings to explain each embodiment, the dimensions, materials, shapes, and relative positions of the components described in the drawings and the descriptions of each embodiment are merely examples.

[0012] <Heated tobacco> A heated tobacco according to one embodiment of the present invention is a heated tobacco comprising a flavor generation segment, the flavor generation segment including a tobacco sheet and granules, the granules being disposed between the tobacco sheets. The heated tobacco may be a non-combustible heated tobacco.

[0013] An example of the heated tobacco product 100 according to this embodiment has a substantially cylindrical rod shape. In the example shown in Figures 1 and 2, the heated tobacco product 100 includes a flavor generation segment 110, a cooling section 120, a filter section 130, and tipping paper 140 that connects these together. The cooling section 120 and the filter section 130 are wound together with the flavor generation segment 110 by the tipping paper 140, thereby connecting them coaxially to the flavor generation segment 110.

[0014] Reference numeral 101 denotes the mouth end of the heated tobacco product 100 (filter portion 130). Reference numeral 102 denotes the tip of the heated tobacco product 100 opposite the mouth end 101. The flavor generation segment 110 is disposed on the tip 102 side of the heated tobacco product 100. In the example shown in Figures 1 and 2, the heated tobacco product 100 has a substantially constant diameter over its entire length in the longitudinal direction (hereinafter also referred to as the axial direction or Z direction) from the mouth end 101 along the tip 102.

[0015] The configuration of the heated tobacco product 100 is not particularly limited and may be a general configuration. In the configuration shown in Fig. 1, the flavor generation segment 110, the cooling section 120, and the filter section 130 are each illustrated as a single segment, but each section may be composed of a single segment or multiple segments.

[0016] <Flavor generating segment> The flavor generating segment 110 according to one embodiment of the present invention is not particularly limited as long as it contains a tobacco sheet and granules, and the granules are disposed between the tobacco sheets. As an example, a tobacco filler 111 made of a tobacco sheet, granules, etc. (hereinafter, the filler containing the tobacco sheet and granules filled in the flavor generating segment 110 may be collectively referred to simply as "tobacco filler") wrapped in cigarette paper 112 can be used.

[0017] The flavor generation segment 110 may also have a fitting portion with a heater member or the like for heating the heated tobacco product 100. The flavor generation segment 110 preferably has a columnar shape, and in this case, the aspect ratio, represented by the height of the flavor generation segment 110 in the major axis direction relative to the width of the base of the flavor generation segment 110, is preferably 1 or greater. The shape of the base of the flavor generation segment 110 is not limited and may be polygonal, rounded polygonal, circular, elliptical, or the like, and the width is the diameter if the base is circular, the major axis if the base is elliptical, or the diameter of the circumscribing circle or the major axis of the circumscribing ellipse if the base is polygonal or rounded polygonal. The height of the flavor generation segment 110 is preferably approximately 10 to 70 mm, and the width is preferably approximately 4 to 9 mm.

[0018] The length of the flavor generation segment 110 in the major axis direction can be changed appropriately depending on the size of the product, but is usually 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 usually 70 mm or less, preferably 50 mm or less, more preferably 30 mm or less, and even more preferably 25 mm or less. From the viewpoint of the balance between the amount of flavor delivered and the aerosol temperature, the ratio of the length of the flavor generation segment 110 to the length h of the flavor generation segment 110 in the major axis direction is usually 10% or more, preferably 20% or more, more preferably 25% or more, and even more preferably 30% or more, and is usually 60% or less, preferably 50% or less, more preferably 45% or less, and even more preferably 40% or less.

[0019] <Tobacco Sheet> The tobacco sheet may be a reconstituted tobacco sheet, or a sheet (hereinafter simply referred to as a homogenized sheet) made by grinding dried tobacco leaves to an average particle size of 20 μm or more and 200 μm or less to obtain tobacco pulverized material, which is then homogenized and processed into a sheet. Furthermore, the tobacco sheet may be a strand type, in which a homogenized sheet having a length approximately the same as the longitudinal direction of the flavor generation segment 110 is shredded approximately parallel to the longitudinal direction of the flavor generation segment 110 and filled into the flavor generation segment 110. The content of dried tobacco leaves contained in the flavor generation segment 110 is not particularly limited, but may be 200 mg or more and 800 mg or less, with 250 mg or more and 600 mg or less being preferred. This range is particularly suitable for a flavor generation segment 110 having a circumference of 22 mm and a length of 20 mm.

[0020] The method for filling the flavor generation segment 110 with the tobacco sheet is not particularly limited, and for example, the tobacco sheet may be wrapped in cigarette paper 112, or the tobacco sheet may be filled into a cylindrical cigarette paper 112. When the flavor generation segment 110 has a substantially rectangular parallelepiped shape with a longitudinal direction, the flavor generation segments 110 may be filled so that their longitudinal directions are in an unspecified direction within the cigarette paper 112, or they may be filled aligned in the axial direction of the flavor generation segment 110 or in a direction perpendicular to the axial direction. Also, for example, the tobacco sheet may be cut into widths of 0.5 mm to 2.0 mm (lengths, for example, 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 (lengths, for example, 5 mm to 40 mm) and filled aligned parallel to the air passage direction, or the tobacco sheet may be crimped (processed to create vertical grains) and then gathered and filled. When the flavor generation segment 110 is heated, the tobacco components contained in the flavor generation segment 110 are vaporized, and these are transferred to the cooling section 120 and the filter section 130 by suction.

[0021] In particular, it is preferable to gather-fill the tobacco sheet (providing multiple channels for vertical air flow) after crimping. This makes it easier to arrange the granules described below between the tobacco sheets. Furthermore, by ensuring air flow paths in the ventilation direction, flavor components can be efficiently delivered to the user. Alternatively, the tobacco sheet may be filled in a spiral shape.

[0022] The amount of tobacco sheet packed into the flavor generation segment 110 depends on the size and shape of the flavor generation segment 110. For example, if the flavor generation segment 110 is rod-shaped with a major axis length of 12 mm and a diameter of 7 mm, the amount is usually 150 mg to 350 mg, preferably 200 mg to 250 mg. The packing density of the tobacco sheet in the flavor generation segment 110 is preferably 0.33 g / cm. ３ ~0.76 g / cm ３ , more preferably 0.43 g / cm ３ ~0.54 g / cm３ When the packing density of the tobacco sheet is within the above range, sufficient delivery can be ensured while reducing the total packing amount of tobacco components, resulting in excellent delivery efficiency.

[0023] <Granules> The granules according to this embodiment are disposed between the tobacco sheets and filled into the flavor generation segment 110 together with the tobacco sheets. In particular, a preferred embodiment is one in which the granules are sandwiched between the tobacco sheets that have been gathered and filled after crimping. This preferred embodiment makes it less likely for the granules to fall out from between the sheets. It also facilitates ensuring the surface area of ​​the tobacco filler and the airflow path in the ventilation direction. The granules may be uniformly or unevenly sandwiched between the sheets, but from the viewpoint of delivery, they are preferably disposed as uniformly as possible. In other words, it is preferred that the granules be distributed so as to maximize the number of contact points between the granules and the tobacco sheets. Alternatively, the granules may be filled between the tobacco sheets after the flavor generation segment 110 has been filled with the tobacco sheets. The granules may be adhered to the sheets. Furthermore, the granules may be held in place to prevent spillage when the flavor generation segment 110 is molded into a rod shape. The adhesive for bonding the sheet and the granules may be at least one adhesive selected from the group consisting of vinyl acetate glues and components commonly used in tobacco sheets, such as binders guar gum, xanthan gum, CMC (carboxymethylcellulose), and CMC-Na (sodium salt of carboxymethylcellulose). The retention agent may be an aerosol source, such as at least one retention agent selected from the group consisting of glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.

[0024] In order to improve the delivery sustainability, it is common to increase the amount of filler containing tobacco components, such as a tobacco sheet. On the other hand, if the filler is increased too much, there is a concern that the delivery efficiency will decrease and the delivery amount at the beginning of smoking (initial puff) will decrease. When granules are placed between the sheets of a tobacco sheet, as in this embodiment, the surface area of ​​the tobacco filler is increased, thereby improving the delivery efficiency and initial puff while ensuring sufficient sustainability. In addition, the thermal conductivity between the sheets can be improved through the granules. Furthermore, by making it difficult for the sheets to adhere to each other, it becomes possible to allow sufficient air to flow between the sheets, thereby improving the delivery efficiency.

[0025] Fig. 6 is a schematic cross-sectional view perpendicular to the longitudinal direction of a flavor generation segment according to one embodiment of the present invention. In Fig. 6, a flavor generation segment wrapped in cigarette paper 61 is filled with a folded tobacco sheet 62, and granules 63 are filled between the tobacco sheets 62. The granules 63 may also be filled in a manner that they are sandwiched between the tobacco sheets 62.

[0026] The base material of the granules is not particularly limited, but preferably contains at least one selected from the group consisting of calcium carbonate, activated carbon, and crystalline cellulose from the viewpoint of thermal conductivity. These base materials can be molded into a granular shape by a known method.

[0027] 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. When the thermal conductivity of the granules is within the above range, the entire flavor generation segment 110 can be heated efficiently, which is preferable.

[0028] The granules can be imparted with various functions by incorporating other components into the base material. Examples of the other components include at least one selected from the group consisting of flavorings, tobacco flavor components, and nicotine. From the viewpoint of component retention, it is preferable to load these components into the flavor generating segment 110 while they are supported by granules. Examples of methods for incorporating other components into granules include a method in which the base material and the other components are mixed and then molded into a granular shape.

[0029] The type of the fragrance is not particularly limited, and from the viewpoint of imparting a good flavor, examples thereof include acetanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise oil, apple juice, Peru balsam oil, beeswax absolute, benzaldehyde, benzoin resinoid, 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-carvone, β-caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, cinnamyl alcohol, cinnamyl cinnamate, citronella oil, DL-citronellol, and the like. Nerol, clary sage extract, cocoa, coffee, konjac oil, coriander oil, cumin aldehyde, davana oil, delta-decalactone, gamma-decalactone, 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-octenoic acid, 2,3-dimethylpyrazine, 2,5-dimethylpyrazine, 2,6-dimethylpyrazine, ethyl 2-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, gene absolute, gentian root infusion, geraniol, geranyl acetate, grape juice, guaiacol, guava extract, gamma-heptalactone, gamma-hexalactone, hexanoic acid, cis-3-hexen-1-ol, hexyl acetate, hexyl alcohol, phenylhexyl acetate, honey, 4-hydroxy-3-pentenoic acid lactate Ton, 4-hydroxy-4-(3-hydroxy-1-butenyl)-3,5,5-trimethyl-2-cyclohexen-1-one, 4-(para-hydroxyphenyl)-2-butanone, sodium 4-hydroxyundecanoate, immortelle absolute, beta-ionone, isoamyl acetate, isoamyl butyrate, isoamyl phenylacetate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute, cola nut tincture, labdanum oil, lemon terpeneless oil, licorice extract, linalool, linalyl acetate, robertia jasmine Orris root oil, maltol, maple syrup, menthol, menthone, L-menthyl acetate, para-methoxybenzaldehyde, methyl 2-pyrrolyl ketone, methyl anthranilate, methyl phenylacetate, methyl salicylate, 4'-methylacetophenone, methylcyclopentenolone, 3-methylvaleric acid, mimosa absolute, honey, myristic acid, nerol, nerolidol, gamma-nonalactone, nutmeg oil, delta-octalactone, octanal, octanoic acid, orange flower oil, orange oil, orris root oil, palmitic acid, omega-pentadeca Calactone, peppermint oil, petitgrain Paraguay oil, phenethyl alcohol, phenethyl phenylacetate, phenylacetic acid, piperonal, plum extract, propenylguaethol, propyl acetate, 3-propylidenephthalide, 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-4-one, 2,6,6-trimethyl-2-cyclohexene-1,4-dione, 4-(2,6,6-trimethyl-1,3-cyclohexa Examples of the flavoring agent include (dienyl)2-buten-4-one, 2,3,5-trimethylpyrazine, γ-undecalactone, γ-valerolactone, vanilla extract, vanillin, veratraldehyde, violet leaf absolute, N-ethyl-p-menthane-3-carboxamide (WS-3), and ethyl-2-(p-menthane-3-carboxamide)acetate (WS-5), with menthol being particularly preferred. These flavoring agents may be used alone or in combination of two or more. By incorporating a flavoring agent into the granules, the delivery of the aroma component can be controlled.

[0030] Examples of tobacco flavor components include components derived from tobacco leaves, such as tobacco shreds. The material of the tobacco shreds is not particularly limited, and known materials such as lamina and ribs can be used. By including the tobacco flavor components in the granules, the delivery of the tobacco flavor components can be controlled.

[0031] Various types of tobacco can be used as the tobacco leaves for producing shredded tobacco and tobacco sheets. Examples include flue-cured tobacco, burley, oriental tobacco, native tobacco, other Nicotiana tabacum varieties, Nicotiana rustica varieties, and mixtures thereof. Mixtures can be created by appropriately blending the aforementioned varieties to achieve the desired flavor. Details of the tobacco varieties are disclosed in the "Encyclopedia of Tobacco," published by the Tobacco Research Center on March 31, 2009. There are several conventional methods for producing the homogenized sheet, i.e., grinding tobacco leaves and processing them into a homogenized sheet. The first method is to produce a paper-making sheet using a papermaking process. The second method involves mixing a suitable solvent, such as water, with ground tobacco leaves to homogenize them, then casting a thin layer of the homogenized material onto a metal plate or metal belt and drying it to produce a cast sheet. The third method involves mixing a suitable solvent, such as water, with ground tobacco leaves to homogenize them, and extruding the mixture into a sheet to produce a rolled sheet. The types of the homogenizing sheets are disclosed in detail in "Encyclopedia of Tobacco, Tobacco Research Center, March 31, 2009."

[0032] The amount of granules filled into the flavor generation segment 110 depends on the size and shape of the flavor generation segment 110. For example, when the flavor generation segment 110 is rod-shaped with a major axis length of 12 mm and a diameter of 7 mm, the amount is usually 20 mg to 100 mg, preferably 50 mg to 80 mg. The packing density of the granules in the flavor generation segment 110 is preferably 0.04 g / cm. ３ ~0.22 g / cm ３ , more preferably 0.11 g / cm ３ ~0.17 g / cm ３ It is preferable from the viewpoint of delivery efficiency that the packing density of the granules is within the above range.

[0033] From the viewpoint of delivery efficiency, the mass ratio of the tobacco sheet to the granules filled in the flavor generation segment 110 (mass of tobacco sheet / mass of granules) is preferably 60 / 40 to 95 / 5, and more preferably 70 / 30 to 80 / 20.

[0034] The average particle size of the granules is preferably 250 μm to 1000 μm, and more preferably 500 μm to 800 μm. When the average particle size of the granules is 250 μm or more, the effect of improving delivery efficiency can be sufficiently obtained. Furthermore, when the average particle size of the granules is 1000 μm or less, the granules are easy to manufacture. The average particle size of the granules can be appropriately adjusted by adjusting the amount of the base material, etc. contained in the granules. Furthermore, the average particle size is measured using a laser diffraction particle sizer such as Mastersizer (manufactured by Malvern).

[0035] The composition and manufacturing method of the granules are not limited to the above examples, and may be, for example, the following composition and manufacturing method.

[0036] Granule Composition The components contained in the granules include (A) 15-50% by weight of tobacco extract, (B) non-wood fiber, (C) binder, and (D) 10-60% by weight of aerosol base material, and the total of (B) and (C) may be 23-50% by weight. Unless otherwise specified, weights and weight percentages are dry weights and dry weight percentages. Dry weight is the weight excluding the weight of water.

[0037] (1) Component (A): Tobacco Extract Tobacco extract is a substance or mixture that exhibits a flavor extracted from tobacco. Tobacco extract can be prepared by known methods. Examples include the following: 1) a method in which tobacco raw material is subjected to extraction using an extraction medium to obtain a tobacco extract; 2) a method in which an extraction medium is added to the tobacco raw material and heated, and the generated vapor is collected; and 3) a method in which the extraction medium is vaporized by heating and passed through the tobacco raw material, and the vapor is collected after passing. Examples of extraction media include water or hydrophilic organic solvents such as alcohol. In method 1), water is preferably used as the extraction medium from the perspective of workability. In methods 2) and 3), alcohols such as propylene glycol, glycerin, or ethanol are preferably used as the extraction medium from the perspective of work efficiency. Acids or alkalis can also be used for extraction as needed. The liquid obtained by extraction, containing the tobacco extract and extraction medium, is called a tobacco extract.

[0038] As the tobacco raw material, for example, raw materials of the Nicotiana genus such as Nicotiana tabacum and Nicotiana rustica can be used. As Nicotiana tabacum, for example, varieties such as Burley or flue-cured varieties can be used. In addition to these, Oriental varieties and native Burley varieties of the Nicotiana genus may also be used.

[0039] The tobacco raw material may be shredded or powdered tobacco raw material (hereinafter also referred to as "raw material pieces"). In such cases, the particle size of the raw material pieces is preferably 0.5 to 1.18 mm. Such raw material pieces can be 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) using a stainless steel sieve with 1.18 mm meshes, the raw material pieces are sieved by a dry mechanical shaking method for 20 minutes to obtain raw material pieces that pass through the stainless steel sieve with 1.18 mm meshes. 2) Subsequently, using a stainless steel sieve with 0.50 mm meshes, the raw material pieces are sieved by a dry mechanical shaking method for 20 minutes to remove the raw material pieces that pass through the stainless steel sieve with 0.50 mm meshes. In this way, raw material pieces can be prepared that pass through a stainless steel sieve (mesh opening = 1.18 mm) that defines the upper limit, but do not pass through a stainless steel sieve (mesh opening = 0.50 mm) that defines the lower limit.

[0040] In one embodiment, the tobacco raw material is treated with an alkali. Flavor components are generated through this treatment, and the flavor components may be collected to prepare a tobacco extract liquid containing a tobacco extract and water. In this case, it is preferable to extract the flavor components as a gas from the alkali-treated tobacco raw material and introduce the gas into water to convert the flavor components into a liquid.

[0041] The alkaline substance is preferably an alkaline liquid such as an aqueous potassium carbonate solution. In this case, the alkaline substance is supplied until the pH of the tobacco raw material falls within 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 water when the tobacco raw material is mixed with 10 times the amount of water.

[0042] The moisture content of the tobacco raw material is not limited, but from the viewpoint of efficiently extracting flavor components, the moisture content is preferably about 5 to 30% by weight. The moisture content of the tobacco raw material is measured by a known method; for example, a 1-g sample is taken, heated at 105°C, and the moisture content is determined as the weight loss when heated until the weight change rate is 1 mg / min or less. For this measurement, for example, a halogen heating moisture meter (such as the MB45 manufactured by Ohaus Co., Ltd.) can be used.

[0043] The content of tobacco extract in the tobacco flavor component is preferably 15 to 50% by weight, and this amount can be appropriately adjusted to, for example, 20 to 40% by weight.

[0044] (2) Component (B): Non-wood fiber. Non-wood fiber is a fiber not derived from wood, preferably a fiber other than tobacco fiber. Dietary fiber is preferred as a non-wood fiber. Dietary fiber is a food component that is not digested by human digestive enzymes, and is more preferably insoluble dietary fiber that does not dissolve in water. Dietary fiber may be porous, i.e., spongy. Porous fiber can increase the surface area of ​​granules and improve thermal conductivity. From the standpoint of availability, the fiber is preferably citrus fiber. Citrus fiber is a fiber derived primarily from the albedo of citrus fruits. Dietary fiber may also be short fibers or columnar particles with a small aspect ratio. Citrus fiber is particularly preferred because it can impart strength to the sheet with a small amount. The moisture content of the non-wood fiber is measured, and the amount of non-wood fiber blended is determined to satisfy the moisture content relationship described below. The moisture content of the non-wood fiber is measured by a known method, for example, the same method as the moisture content of tobacco raw materials. In one embodiment, the content of component (B) in the granules is 10 to 30% by weight. Although wood fiber is a well-known fiber material, the use of non-wood fiber has the advantage of being superior in liquid-carrying capacity compared to wood fiber, and therefore the amount of non-wood fiber added can be reduced, allowing for more components that contribute to flavor and taste.

[0045] (3) Component (C): Binder Examples of the binder include carboxyalkyl cellulose and guar gum. The moisture content of the binder is measured by a known method, for example, the same method as that for the moisture content of the tobacco raw material.

[0046] The total amount of component (B) and component (C) in the sheet is preferably 23 to 50% by weight. When this amount is equal to or greater than the lower limit, the granules are easy to handle and tend to have sufficient strength. Furthermore, when this amount is equal to or less than the upper limit, the flavor is sufficient or unpleasant flavors are suppressed. From this perspective, the lower limit of this total amount is preferably 24% by weight or more, and the upper limit is preferably 40% by weight or less, more preferably 30% by weight or less. The respective amounts of component (B) and component (C) are determined so as to satisfy the above total amount, and in one embodiment, the amount of component (B) is 10 to 30% by weight or 13 to 25% by weight, and the amount of component (C) is 13 to 20% by weight or 10 to 25% by weight.

[0047] (4) Component (D): Aerosol Base Examples of the aerosol base include polyhydric alcohols such as glycerin or polyethylene glycol. The moisture content in the aerosol base is measured by a known method, for example, the same method as that for the moisture content in tobacco raw materials. The amount of aerosol base in the granules is 10 to 60% by weight. When this amount is equal to or greater than the lower limit, the amount of smoke produced during smoking is sufficient. When this amount is equal to or less than the upper limit, the handleability of the granules is improved. From this perspective, the amount is preferably 15 to 50% by weight, more preferably 20 to 40% by weight.

[0048] (5) Others The granules may contain wood fibers. Examples of wood fibers include softwood pulp, Vitacel FL400, and Vitacel L600 / 30 (all manufactured by J. Rettenmaier & Söhne GmbH). The mixture for producing the granules preferably contains water, and the weight ratio of water to components other than water in the mixture is preferably (0.2 to 1:1). It is preferable to measure the moisture content of the wood fibers and determine the amount of wood fibers to satisfy this relationship. The moisture content of the wood fibers is measured by a known method, for example, the same method as that for the moisture content of tobacco raw materials. In one embodiment, the wood fiber content in the granules is 1 to 10% by weight.

[0049] Granule Manufacturing Method The granules of this embodiment are preferably manufactured by a method comprising step 1A of preparing a mixture of tobacco extract containing component (A), component (B), component (C), and component (D), and step 2A of granulating the mixture.

[0050] (1) Step 1A (1-1) Preparation of Tobacco Extract In this step, the tobacco raw material described above is subjected to extraction to prepare a tobacco extract containing the tobacco extract as an active ingredient and an extraction medium. Water is preferably used as the extraction medium. The extraction temperature is not limited, but is preferably 60 to 100°C, and more preferably 70 to 90°C from the viewpoint of smoking taste. The extraction time is preferably 20 to 40 minutes.

[0051] (1-2) Mixing Mixing can be carried out by known methods; for example, a mixture can be prepared by mixing the components in a mixer or the like. The mixture preferably contains water, and the weight ratio of water to components other than water is preferably (0.2 to 1:1). The water may be water contained in the tobacco extract, or may be water added separately. In particular, when the content of non-wood fibers is increased, it is preferable to also increase the content of water.

[0052] (2) Step 2A In step 2A, the same method as in step 2 described above can be used. Specifically, in step 2A, the mixture obtained in step 1A is granulated (into long columns) using a wet extrusion granulator, and then the granules are sized into short columns or spheres. The extrusion pressure during extrusion granulation can be set as desired depending on the viscosity of the mixture, etc.

[0053] The granules obtained by extrusion granulation may be further dried, if necessary, to adjust the moisture content. For example, the loss on drying of the granules obtained by extrusion granulation is measured, and if it is higher than the desired loss on drying (for example, 5% by weight or more and 17% by weight or less), the granules may be further dried to obtain the desired loss on drying. The drying conditions (temperature and time) for obtaining the desired loss on drying can be determined in advance based on the drying conditions (temperature and time) required to reduce the loss on drying by a predetermined value.

[0054] The moisture content of the tobacco filler can be 10% by weight or more and 15% by weight or less, and preferably 11% by weight or more and 13% by weight or less, based on the total weight of the tobacco filler. This moisture content suppresses the occurrence of wound stains and improves the suitability for wrapping during the production of the flavor generating segment 110. There are no particular restrictions on the size or preparation method of the tobacco shreds contained in the tobacco filler. For example, dried tobacco leaves shredded to a width of 0.5 mm or more and 2.0 mm or less may be used. Furthermore, when using a ground homogenized sheet, dried tobacco leaves may be ground to an average particle size of approximately 20 μm to 200 μm, homogenized, and then shredded to a width of 0.5 mm or more and 2.0 mm or less.

[0055] The tobacco filler may also contain an aerosol base. The aerosol base is a base that generates an aerosol when heated, and examples of such aerosol base include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof. The content of the aerosol base in the tobacco filler is not particularly limited, and from the viewpoints of generating sufficient aerosol and imparting a good flavor, it is usually 5% by weight or more, preferably 10% by weight or more, and usually 50% by weight or less, and preferably 15% by weight or more and 25% by weight or less, relative to the total amount of the tobacco filler.

[0056] The tobacco filler may contain a flavoring in addition to that contained in the granules. The content of the flavoring in the tobacco filler is not particularly limited, and from the viewpoint of imparting a good flavor, it is usually 10,000 ppm or more, preferably 20,000 ppm or more, more preferably 25,000 ppm or more, and is usually 70,000 ppm or less, preferably 50,000 ppm or less, more preferably 40,000 ppm or less, and even more preferably 33,000 ppm or less.

[0057] <Method for manufacturing heated tobacco> The method for manufacturing heated tobacco according to this embodiment is not particularly limited, and a combination of known methods can be applied. As an example, a tobacco sheet is crimped while being extruded from a roller, granules are added to the tobacco sheet, and the tobacco sheet is rolled up with cigarette paper to produce a rod-shaped flavor generation segment 110. At this time, an aerosol source such as glycerin may be added as needed. The flavor generation segment 110, the cooling section 120, and the filter section 130 are then rolled up with tipping paper 140 to produce the heated tobacco.

[0058] <Electrically heated tobacco suction system> The heated tobacco product 100 described above can be used together with an electrically heated device that heats the heated tobacco product. That is, an electrically heated tobacco suction system according to another embodiment of the present invention is an electrically heated tobacco suction system that includes the heated tobacco product described above and an electrically heated device that heats the heated tobacco product. The configuration of the electrically heated tobacco suction system is not particularly limited, and can be, for example, as shown in Figures 3 and 4. Figure 3 is a diagram illustrating the internal structure of an electrically heated tobacco suction system 200. Note that the heated tobacco product 100 in Figure 3 is a schematic representation of the heated tobacco product 100 in Figure 1.

[0059] The electrically heated tobacco suction system 200 includes a heated tobacco product 100 and an electrically heated device 30 that heats the flavor generation segment 110 of the heated tobacco product 100. The heated tobacco product 100 is accommodated in an accommodating cavity 313 of the accommodating section 310 through an insertion port 3A of the electrically heated device 30 so as to be freely insertable into and removable from the accommodating cavity 313.

[0060] When the electrically heated device 30 is used by a user, the heated tobacco product 100 is inserted into the storage cavity 313, and in this state, the heater provided in the storage section 310 is heated to generate heat, which heats the flavor source within the heated tobacco product 100, thereby generating an aerosol containing components such as tobacco components, which is then inhaled by the user. The heater may directly heat the flavor generation segment 110, but may also heat the aerosol generation source within the heated tobacco product 100, thereby supplying the heated aerosol to the flavor generation segment 110, and the heated aerosol may further heat the tobacco components, etc. within the flavor generation segment 110, thereby allowing the user to inhale.

[0061] The electric heating device 30 has a housing 31 that is a case for accommodating various components. The housing 31 accommodates a heater 32, a temperature sensor 35, a suction sensor 36, a control unit 37, a power supply 38, etc.

[0062] [Storage section] The housing 31 has a storage section 310 that stores the heated tobacco product 100 in an insertable and removable manner from the front end to the rear end. The storage section 310 extends in the insertion / removal direction of the heated tobacco product 100 and includes a cylindrical peripheral wall 312 that defines the outer periphery of the space into which the heated tobacco product 100 is inserted, and a disk-shaped rear wall 311 that closes the rear end of the peripheral wall 312 so as to define the rear end of the space. The peripheral wall 312 and rear wall 311 of the storage section 310 may be formed integrally with the housing 31, or may be formed separately from the housing 31 and then assembled to the housing 31.

[0063] The open end of the peripheral wall 312 of the storage section 310 is open toward the outside of the housing 31, and serves as an insertion opening 3A for inserting the heated tobacco product 100. The internal space of the peripheral wall 312 serves as a cylindrical storage cavity 313 into which the tip portion of the heated tobacco product 100 can be inserted and removed via the insertion opening 3A. In Fig. 4, the symbol CL indicates the central axis of the storage cavity 313 in the insertion and removal direction of the heated tobacco product 100. Hereinafter, the direction along this central axis CL will also be referred to as the axial direction. The outer diameter of the storage cavity 313, i.e., the inner diameter of the peripheral wall 312, may be equal to, slightly larger than, or slightly smaller than the outer diameter of the heated tobacco product 100.

[0064] The heater 32 is provided around the peripheral wall 312 of the storage section 310. The peripheral wall 312 and rear wall 311 of the storage section 310 are formed from a material that can withstand the heat of the heater 32 and transfer the heat of the heater 32 to the heated tobacco product 100. Materials that can be used for such a storage section 310 include, for example, metals such as stainless steel and heat-resistant resins. The heater 32 may be disposed within the peripheral wall 312.

[0065] [Heater] The heater 32 generates heat upon receiving power from the control unit 37 and heats the heated tobacco product 100 contained in the container 310. In other words, the heater 32 is one form of a heating unit that heats the heated tobacco product 100. The type of heater 32 is not particularly limited, but examples that can be used include a steel material with a heating wire (e.g., a wire material with high electrical resistance, such as nichrome, iron chromium, or iron nickel) strung throughout, a ceramic heater, a sheathed heater, etc. A sheathed heater is a heater in which a heating wire and a filler are covered in a metal pipe.

[0066] FIG. 4 shows the heated tobacco product 100 inserted into the storage cavity 313. In this state, the heater 32 receives power from the control unit 37, as described below, to heat the flavor generation segment 110 to a predetermined temperature. The space in the storage cavity 313 that is heated to a predetermined temperature by the heat of the heater 32 is designated as the heated region A1, and the space adjacent to the insertion opening of the heated region A1 in the axial direction (insertion / removal direction) is designated as the non-heated region A2. The non-heated region A2 is formed on the insertion opening side of the storage cavity 313, while the heated region A1 is formed on the rear side of the storage cavity 313. The heater 32 is disposed around or inside the peripheral wall 312 in the heated region A1, and heats the heated region A1 from the outside. The heater 32 not only heats the area in contact with the heater 32, but also heats areas distant from the heater 32 by radiation and heat transfer. For example, the heater 32 heats the area from the front end of the heater 32 to a position 317 toward the insertion opening in the axial direction at a predetermined temperature. Therefore, the heated region A1 is the region from position 317 to the rear wall 311 in the axial direction of the accommodating portion 310. That is, position 317 is the boundary between the heated region A1 and the non-heated region A2, and the non-heated region A2 is the region from this boundary 317 to the front end of the accommodating cavity 313 in the axial direction. Note that this boundary 317 may be determined as the boundary between the region where the temperature reaches a predetermined temperature and the region where the temperature falls below the predetermined temperature when actually heated by the heater 32, or may be determined as the estimated boundary between the region where the temperature reaches a predetermined temperature and the region where the temperature falls below the predetermined temperature when the heater 32 is operated under predetermined conditions. Note that in this embodiment, the boundary position between the region where the temperature reaches a predetermined temperature and the region where the temperature falls below the predetermined temperature of the peripheral wall 312 is estimated, and the plane that passes through this boundary position and is perpendicular to the central axis CL is determined as the boundary 317, as shown by the two-dot chain line in FIG. 4 . When the heated tobacco product 100 is inserted into the containing cavity 313, the flavor generation segment 110 is located in the heated region A1, and at least a portion of the cooling section 120 is located in the non-heated region A2.In addition, when the heated tobacco 100 is in a predetermined state, for example, inserted into the storage cavity 313 until the tip 102 of the heated tobacco 100 hits the rear wall 311 of the storage section 310, the part of the storage cavity 313 where the flavor generation segment 110 is located may be designated as the heated area A1, and the part where the cooling section 120 is located may be designated as the non-heated area A2.

[0067] 5 is a diagram showing the configuration of the control unit 37. The control unit 37 controls the operating state of the electric heating device 30, such as controlling heating by the heater 32. The control unit 37 is a computer including a processor 71 such as a CPU (Central Processing Unit), DSP (Digital Signal Processor), or FPGA (Field-Programmable Gate Array), a memory 72 such as a RAM (Random Access Memory) or ROM (Read Only Memory), and an input / output unit 73. The control unit 37 also includes a drive circuit 74 for the heater 32.

[0068] The memory 72 may include a memory that functions as a main memory unit 721 and a memory that functions as an auxiliary memory unit 722. The memory 72 may be formed integrally (on one chip) with the processor 71. Examples of the memory 72 include storage media such as volatile memory such as RAM, non-volatile memory such as ROM, EPROM (Erasable Programmable ROM), SSD, or removable media.

[0069] The memory 72 can store an operating system (OS), various programs (firmware), various data tables, various databases, setting data, user data, and the like, for executing the operation of the electric heating device 30.

[0070] The input / output unit 73 is a means for inputting information, such as power on / off by the user (smoker), to the processor 71 or outputting information to the user. The input / output unit 73 is, for example, an interface that operates the temperature sensor 35 and the suction sensor 36 at predetermined timing and acquires the detected values ​​of each sensor 35, 36. The input / output unit 73 may also include input means such as operation buttons and a touch panel, as well as output means such as a display, vibrator, and 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 connect to another computer via a communication cable, receive programs and data for controlling the electric heating device 30, and store them in the memory 72, thereby updating the firmware, heating profile, and the like. The display is a means for displaying information, and may be, for example, an indicator such as an LED, a liquid crystal display, or an organic electroluminescence (EL) display.

[0071] The drive circuit 74 supplies power from the power supply 38 to the heater 32 in accordance with instructions from the processor 71, thereby operating the heater 32. The drive circuit 74 is, for example, a converter that adjusts the amount of current flowing to the heater 32.

[0072] The control unit 37 has a processor 71 that reads a program stored in the memory 72 into a working area of ​​the main storage unit and executes it, and functions as predetermined functional units, such as a determination unit 711, a heating control unit 712, and an output control unit 713. Note that these functional units are not limited to those that are realized based on a program (software), and some or all of them may be configured by hardware circuits such as a processor, an integrated circuit, and a logic circuit.

[0073] Based on the detection results of the sensors 35, 36 and input information from the input means, the determination unit 711 determines information such as the user's operation, the state of the heated tobacco product 100, and the heating status of the heater 32. For example, the determination unit 711 measures the number of puffs from the detection value of the suction sensor 36, and determines whether the number of puffs has reached a predetermined number.

[0074] The heating control unit 712 controls the drive circuit 74 based on the determination result of the determination unit 711, thereby controlling the power supplied from the power source 38 to the heater 32 via the drive circuit 74. For example, the heating control unit 712 terminates heating when the determination unit 711 determines that the number of suctions has reached a predetermined number. Furthermore, the heating control unit 712 changes the power supplied to the heater 32 to change the heating temperature when the determination unit 711 determines that the amount of moisture or flavor source in the flavor generation segment 110 has decreased to a predetermined amount. Furthermore, the heating control unit 712 stops the power supply to the heater 32 to terminate heating when the determination unit 711 determines that the amount of moisture or flavor source in the flavor generation segment 110 has decreased to such an extent that heating should be terminated.

[0075] The output control unit 713 outputs a notification, a warning, or the like to the user based on the determination result of the determination unit 711. For example, the output control unit 713 outputs a signal when the remaining number of possible suctions reaches a predetermined number or less, and as an output to the user, the output control unit 713 outputs, for example, a display on a display unit, a sound output from a speaker, or vibrations from a vibrator.

[0076] The length of the heater 32 in the longitudinal direction can be within a range of L±5.0 mm, where L mm is the length of the flavor generation segment 110 in the longitudinal direction. From the viewpoint of sufficient heat transfer to the flavor generation segment 110 and sufficient volatilization of the aerosol base material and flavor components contained in the flavor source, i.e., aerosol delivery, the length of the heater 32 in the longitudinal direction is preferably L mm or more, and from the viewpoint of suppressing the generation of components that have an undesirable effect on the flavor, etc., the length 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.

[0077] The heating intensity, such as the heating time and heating temperature of the heated tobacco product 100 by the heater 32, can be preset for each electrically heated tobacco suction system 200. For example, by preheating the heated tobacco product 100 for a certain period of time after it is inserted into the electrically heated device 30, the heated tobacco product 100 can be heated until the temperature of the outer surface of the portion of the heated tobacco product 100 inserted into the electrically heated device 30 reaches X (°C), and the temperature can then be set in advance to maintain a constant temperature of X (°C) or less. From the perspective of the delivery amount of components and the like generated by heating, X (°C) is preferably 80°C or higher and 400°C or lower. Specifically, the temperature can 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.

[0078] From the viewpoint of promoting the inflow of air from the outside and preventing components generated by heating and air from accumulating within the cooling section 120, the opening 103 that may be provided in the cooling section 120 is preferably located closer to the mouth end than the end of the area of ​​the cooling section 120 that comes into contact with the electrically heated device 30. Furthermore, the insertion port 3A of the electrically heated device 30 for the heated tobacco product 100 may be tapered to make it easier to insert the heated tobacco product 100.

[0079] The above description using Figure 4 has described an embodiment in which a heater is used as a means for heating the heated tobacco product 100, specifically, an embodiment in which the heated tobacco product 100 is heated from the outside when inserted into an electric heating device. However, the means for heating the heated tobacco product 100 is not limited to this. For example, a rod-shaped or spindle-shaped heater may be used, and when the heated tobacco product 100 is inserted into an electric heating device, the heater may be inserted into the flavor generation segment 110 of the heated tobacco product 100, thereby heating the heated tobacco product 100 from the inside. Another embodiment may include an inductor as the heater, and a susceptor for heating a flavor source or the like introduced into the flavor generation segment 110 of the heated tobacco product 100. In this embodiment, the flavor source or the like can be heated by supplying power to the inductor via the output control unit 713 and heating the susceptor by induction heating. Another embodiment may include a microwave generator as the heater. In this embodiment, the power control unit 713 supplies power to the microwave generator, and the flavor source in the flavor generation segment 110 can be heated by microwave heating.

[0080] The present invention will be explained in more detail by way of examples, but the present invention is not limited to the description of the following examples as long as it does not deviate from the gist of the present invention.

[0081] <Materials for heated tobacco> Tobacco sheet: A composition obtained by adding glycerin as an aerosol-generating base material to ground tobacco in an amount of 12% by mass of the total, was formed into a sheet having a thickness of 248 μm and a basis weight of 200 gm / m ２ Granules: calcium carbonate and carboxymethyl cellulose (binder) mixed in a weight ratio of 95:5. Thermal conductivity: 2.70 W / mK. Average particle size: 500 μm.

[0082] Evaluation Method: The heated tobacco products prepared in the Examples and Comparative Examples were inserted into a commercially available electric heating device (PloomX, manufactured by Japan Tobacco Inc.), then the device was turned on. The smoking test was initiated once the device was ready for smoking. The smoking test was conducted using a Borgwald single-puff automatic smoking machine, with 10 puffs at 55 ml / 2 seconds every 30 seconds. Mainstream smoke generated during the smoking test was collected in a Cambridge pad, and the nicotine and aerosol delivery amounts were measured by weighing the Cambridge pad and performing gas chromatography after each puff.

[0083] Example 1: A tobacco sheet was crimped while being extruded from a roller. Granules were then added to the tobacco sheet, and the tobacco sheet and the granules were gathered and wrapped in cigarette paper to produce a cylindrical flavor generation segment. The flavor generation segment had a circumference of 22 mm and a length of 12 mm, a tobacco sheet width of 85 mm, and a loading of 204 mg of tobacco sheet and 80 mg of granules. The tip segment, flavor generation segment, cooling section, and filter section were arranged in a line in order from the farthest from the mouth end, and these were connected coaxially by wrapping with tipping paper to obtain a heated tobacco product. An 8 mm long paper filter was used as the tip segment, a 20 mm long hollow tube as the cooling section, and a filter from a heated tobacco product (Mevius Deep Regular for Ploom X) used in Ploom X (trade name, manufactured by Japan Tobacco Inc.) was used as the filter section. The smoking test described above was conducted using the obtained heated tobacco product, and the delivery amount was evaluated. The results are shown in Table 1.

[0084] Comparative Example 1 A heat-not-burn tobacco product was produced and evaluated in the same manner as in Example 1, except that the tobacco sheet had a width of 95 mm and a filling amount of 228 mg, and no granules were filled in the flavor generating segment. The results are shown in Table 1.

[0085]

[0086] Figures 7 and 8 are graphs showing the results of Table 1. From the results of Table 1, Figures 7 and 8, it can be seen that the heated tobacco product of Example 1 has a smaller tobacco sheet filling amount than Comparative Example 1, yet achieves the same level of delivery. In other words, the heated tobacco product containing the granules according to this embodiment has improved delivery efficiency and provides an improved smoking experience.

[0087] 100 Heated tobacco 101 Mouth end 102 Tip 103 Aperture 110 Flavor generating segment 111 Tobacco filler 112 Cigarette paper 120 Cooling section 130 Filter section 140 Tipping paper 150 Filter material 160 Filter wrapper 170 Additive release container R1 Lip release material placement area 200 Electrically heated tobacco suction system 30 Electrically heated device 31 Housing 310 Storage section 311 Rear wall 312 Peripheral wall 313 Storage cavity 32 Heater 35 Temperature sensor 36 Suction sensor 37 Control section 38 Power source 71 Processor 711 Determination section 712 Heating control section 713 Output control section 72 Memory 721 Main memory section 722 Auxiliary memory section 73 Input / output section 74 Drive circuit 61 cigarette paper 62 tobacco sheet 63 granules

Claims

1. A heated tobacco comprising a flavor generating segment, the flavor generating segment including a tobacco sheet and granules, the granules being disposed between the tobacco sheets.

2. The heated tobacco product according to claim 1, wherein the tobacco sheets are gathered and filled after being crimped, and the granules are sandwiched between the gathered and filled tobacco sheets.

3. The heated tobacco product according to claim 1 or 2, wherein the thermal conductivity of the granules is 0.10 W / mK to 250 W / mK.

4. The heated tobacco product according to any one of claims 1 to 3, wherein the granules contain a flavoring.

5. A heated tobacco product according to any one of claims 1 to 4, wherein the granules contain a tobacco flavor component.

6. The heated tobacco product according to any one of claims 1 to 5, wherein the granules contain nicotine.

7. The packing density of the tobacco sheet in the flavor generating segment is 0.33 g / cm ３ ~0.76 g / cm ３ The heated tobacco product according to any one of claims 1 to 6, wherein 8. The packing density of the granules in the flavor generating segment is 0.04 g / cm ３ ~0.22 g / cm ３ The heated tobacco product according to any one of claims 1 to 7, wherein 9. A heated tobacco product according to any one of claims 1 to 8, wherein the mass ratio of the tobacco sheet to the granules in the flavor generating segment is 60 / 40 to 95 / 5.

10. The 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.

11. The heated tobacco product according to any one of claims 1 to 10, wherein the heated tobacco product is a non-combustion heated tobacco product.

12. An electrically heated tobacco smoking system comprising the heated tobacco product according to any one of claims 1 to 11 and an electrically heated device for heating the heated tobacco product.

Images