JP7759997B2 - Tobacco composition, tobacco-containing segment, non-combustion heating type flavor inhalation device, and non-combustion heating type flavor inhalation system - Google Patents

Description

The present invention relates to a tobacco composition, a tobacco-containing segment, a non-combustion heating type flavor inhalation device, and a non-combustion heating type flavor inhalation system.

In combustion-type flavor inhalation devices (cigarettes), flavor is obtained by burning a tobacco-containing segment that includes a tobacco filler containing tobacco leaves. As an alternative to combustion-type flavor inhalation devices, non-combustion-heating flavor inhalation devices have been proposed, which obtain flavor by heating the tobacco-containing segment instead of burning it. The heating temperature of non-combustion-heating flavor inhalation devices is lower than the combustion temperature of combustion-type flavor inhalation devices, for example, approximately 400°C or lower. Because the heating temperature of non-combustion-heating flavor inhalation devices is thus low, an aerosol-generating agent such as glycerin is added to the tobacco filler in non-combustion-heating flavor inhalation devices in order to increase the amount of smoke. The aerosol-generating agent vaporizes when heated, generating an aerosol. The aerosol is supplied to the user together with tobacco components, allowing the user to obtain a sufficient amount of flavor.

In the tobacco-containing segment of non-combustion heating flavor inhalation devices, tobacco fillers filled with tobacco sheets instead of tobacco leaves are typically used to ensure that the tobacco filler contains a sufficient amount of aerosol-generating agent (see, for example, Patent Document 1). Tobacco sheets are obtained by molding a tobacco-containing composition into a sheet shape, and contain fibers such as pulp as a filler for molding. Because the fibers can absorb the aerosol-generating agent, tobacco sheets can hold more aerosol-generating agent than tobacco leaves.

On the other hand, Patent Documents 2 to 6 disclose tobacco compositions containing tobacco leaves and tobacco sheets, primarily for use in combustion-type flavor inhalation devices.

Special Publication No. 2014-515274 Special table 2019-503659 publication Special Publication No. 2013-502232 Japanese Unexamined Patent Publication No. 7-184624 Special table 2018-516075 publication International Publication No. 2011/013478

As mentioned above, tobacco sheets can contain a large amount of aerosol-generating agent, ensuring a sufficient amount of smoke when using a non-combustion heating flavor inhaler. However, because tobacco sheets contain fibers such as pulp, a fibrous odor may be noticeable during use. Furthermore, because tobacco sheets contain materials other than tobacco, such as fibers, and because tobacco sheets lose some of their tobacco components during production, the flavor is perceived as weaker during use and the flavor does not last as long as leaf tobacco. Furthermore, due to the partial loss of tobacco components during production, tobacco sheets are more expensive to manufacture than leaf tobacco. On the other hand, leaf tobacco has a strong flavor during use, is free of a fibrous odor, and is low-cost, but because it can only contain a small amount of aerosol-generating agent, it does not ensure a sufficient amount of smoke.

The present invention aims to provide a low-cost tobacco composition that can reduce fiber odor and improve the intensity and persistence of flavor while ensuring a sufficient amount of smoke, as well as a tobacco-containing segment containing the tobacco composition, a non-combustion heating type flavor inhalation device, and a non-combustion heating type flavor inhalation system.

The present invention includes the following embodiments:

The tobacco composition according to an embodiment of the present invention comprises:
A tobacco composition comprising a tobacco sheet and tobacco leaves,
a mass ratio of the tobacco sheet to the tobacco leaves is tobacco sheet:tobacco leaves=40-80:20-60;
The tobacco composition includes an aerosol generating agent.

The tobacco-containing segment according to an embodiment of the present invention comprises:
The tobacco composition of the present invention includes a tubular wrapper and a tobacco filler in which the tobacco composition of the present invention is filled within the wrapper.

The non-combustion heating type flavor inhaler according to an embodiment of the present invention comprises:
A tobacco-containing segment according to an embodiment of the present invention is provided.

The non-combustion heating type flavor inhalation system according to an embodiment of the present invention comprises:
A non-combustion heating type flavor inhaler according to an embodiment of the present invention;
a heating device for heating the tobacco-containing segment.

The present invention provides a low-cost tobacco composition, a tobacco-containing segment containing the tobacco composition, a non-combustion-heating flavor inhalation device, and a non-combustion-heating flavor inhalation system that can reduce fiber odor and improve the intensity and persistence of flavor while ensuring a sufficient amount of smoke.

1 is a cross-sectional view showing an example of a non-combustion and heating type flavor inhaler according to an embodiment of the present invention. 1A and 1B are cross-sectional views showing an example of a non-combustion heating type flavor inhalation system according to the present embodiment, showing (a) a state before a non-combustion heating type flavor inhalation tool is inserted into a heating device, and (b) a state in which the non-combustion heating type flavor inhalation tool is inserted into a heating device and heated. 1 is a cross-sectional view showing a state in which a tobacco stick has been inserted to a specified position in the heating chamber of the electrically heated device according to the present embodiment. FIG. 4 is a diagram showing a cross section (B-B cross section) at the B-B position of the hollow tube heater shown in FIG. 3. FIG. FIG. 10 is a scatter plot of principal component scores in a reference example.

[Tobacco composition]
The tobacco composition according to this embodiment includes a tobacco sheet and tobacco leaves. Here, in this embodiment, the mass ratio of the tobacco sheet to the tobacco leaves is tobacco sheet:tobacco leaves=40-80:20-60. The tobacco composition according to this embodiment also includes an aerosol-generating agent.

The inventors have discovered that, in a tobacco composition containing an aerosol-generating agent, blending tobacco sheet and leaf tobacco in a mass ratio of tobacco sheet:tobacco leaf = 40-80:20-60 can reduce fibrous odor while ensuring a sufficient amount of smoke, and improve the level and persistence of flavor. By ensuring a mass ratio of tobacco sheet of 40% by mass or more (a mass ratio of leaf tobacco of 60% by mass or less), the tobacco composition can contain a sufficient amount of aerosol-generating agent, ensuring a sufficient amount of smoke during use. Furthermore, by ensuring a sufficient amount of smoke, tobacco components are sufficiently supplied to the user by the aerosol, improving the level and persistence of flavor. Meanwhile, by ensuring a mass ratio of tobacco sheet of 80% by mass or less (a mass ratio of leaf tobacco of 20% by mass or more), the fibrous odor derived from fibers such as pulp contained in the tobacco sheet can be reduced. Furthermore, by increasing the mass ratio of leaf tobacco, the content of tobacco components increases, improving the level and persistence of flavor. Furthermore, in this embodiment, because tobacco leaf is blended into the tobacco sheet, there is less loss of tobacco components during production compared to a tobacco composition containing only a tobacco sheet, allowing for reduced production costs. The tobacco composition according to this embodiment is particularly useful as a tobacco composition for use in a non-combustion heat-type flavor inhalation device.

In this embodiment, the mass ratio of the tobacco sheet to the leaf tobacco is tobacco sheet:tobacco leaf = 40-80:20-60, preferably (40 or more but less than 70):(more than 30 but not more than 60), more preferably 45-69:31-55, even more preferably 50-69:31-50, and particularly preferably 55-68:32-45. Because the tobacco sheet and the leaf tobacco have different appearances, it is possible to measure the mass of each separately in a tobacco composition containing the tobacco sheet and the leaf tobacco. Furthermore, if the leaf tobacco contains components such as an aerosol-generating agent, the mass of the leaf tobacco is the mass including the components. The same applies to the tobacco sheet. Furthermore, the tobacco composition according to this embodiment may be composed of a tobacco sheet and leaf tobacco.

(bulkness)
The expansion bulk of the tobacco composition according to this embodiment is preferably 300 to 580 cm ³ /100g. Because tobacco sheets have a lower expansion bulk than leaf tobacco, a tobacco composition consisting only of a tobacco sheet requires a larger amount of tobacco composition to be filled in order to achieve a predetermined wrapping hardness in the tobacco-containing segment. However, because the tobacco composition according to this embodiment is blended with leaf tobacco with high expansion bulk, it has a higher expansion bulk than a tobacco composition consisting only of a tobacco sheet, and the amount of tobacco composition filled during the production of the tobacco-containing segment can be reduced. This reduces the production cost of the tobacco-containing segment. By having the expansion bulk of the tobacco composition be 300 cm ³ /100g or more, the amount of tobacco composition filled during the production of the tobacco-containing segment can be sufficiently reduced, further reducing the production cost. The expansion bulk of the tobacco composition is more preferably 300 to 500 cm ³ /100g, even more preferably 300 to 400 cm ³ /100g, and particularly preferably 330 to 380 cm ³ /100g.

The swelling capacity of the tobacco composition is a value measured by the following method. A DD-60A manufactured by Borgwaldt of Germany can be used to measure the swelling capacity. The swelling capacity is a value calculated from the height of the sample cylinder measured after a load of 11.4 kg is applied for 5 seconds to a measuring cylinder with a diameter of 95 mm into which the sample is placed. In other words, the swelling capacity represents the volume per unit weight when a lump of sample is compressed with a constant force.
FP=(A×h5)/W [cm ³ /100g]
FP: Bulking capacity A: Cross-sectional area of the sample cylinder W: Weight of the sample h5: Height of the sample cylinder at the end of loading

(Reducing sugar content)
The tobacco composition according to this embodiment may contain reducing sugar. Reducing sugar is a tobacco component known to impart a pleasant tobacco-like aroma to the aerosol. Examples of reducing sugar include glucose and fructose. In the tobacco composition according to this embodiment, the reducing sugar content of the tobacco sheet is preferably 1.5 to 25.0% by mass, more preferably 2.0 to 15.0% by mass from the viewpoint of flavor, and even more preferably 2.0 to 10.0% by mass. If the reducing sugar content of the tobacco sheet is less than 1.5% by mass, the aerosol may produce a physiologically unpleasant sensation in the oral cavity. Furthermore, if the reducing sugar content exceeds 25.0% by mass, the aerosol may become acidic.

In the tobacco composition according to this embodiment, the reducing sugar content of the tobacco leaf is preferably 0.5 to 25.0% by mass, more preferably 1.0 to 20.0% by mass, and even more preferably 5.0 to 15.0% by mass. If the reducing sugar content of the tobacco leaf is less than 1.0% by mass, an aerosol that causes physiological discomfort in the oral cavity may be generated. Furthermore, if the reducing sugar content exceeds 20.0% by mass, the aerosol may become acidic.

The reducing sugar content of the tobacco composition according to this embodiment is preferably 0.8 to 25.0% by mass, more preferably 1.0 to 20.0% by mass, and even more preferably 2.0 to 15.0% by mass. If the reducing sugar content of the tobacco composition is less than 1.0% by mass, it may generate an aerosol that causes physiological discomfort in the oral cavity. Furthermore, if the reducing sugar content exceeds 25.0% by mass, the aerosol may become acidic. The reducing sugar content of tobacco sheets, leaf tobacco, and tobacco compositions can be measured by powdering the sample, extracting the reducing sugars, and analyzing them using high-performance liquid chromatography or NIR measurement. Furthermore, the reducing sugar content of each can be controlled within the above range by, for example, blending Virginia varieties, which have a high reducing sugar content, with Virginia and Burley varieties, which have a low reducing sugar content.

(Aerosol generating agent and its content)
The tobacco composition according to this embodiment contains an aerosol-generating agent. The aerosol-generating agent vaporizes upon heating to generate an aerosol, thereby increasing the amount of smoke produced during use. The aerosol-generating agent contained in the tobacco composition according to this embodiment is not particularly limited as long as it can vaporize upon heating to generate an aerosol, and various extracts from natural products and/or their constituent components can be selected. Specific examples of aerosol-generating agents include, but are not limited to, polyhydric alcohols such as glycerin, propylene glycol, sorbitol, xylitol, and erythritol, triacetin, 1,3-butanediol, and mixtures thereof. The aerosol-generating agent may be contained in the tobacco composition; for example, it may be contained in the tobacco sheet, the tobacco leaf, or both the tobacco sheet and the tobacco leaf.

In the tobacco composition according to this embodiment, the aerosol-generating agent content of the tobacco sheet is preferably 5.0 to 20.0% by mass, more preferably 7.5 to 18.0% by mass, and even more preferably 10.0 to 16.0% by mass. By ensuring that the aerosol-generating agent content of the tobacco sheet is 5.0% by mass or more, a sufficient amount of aerosol can be supplied to the user.

In the tobacco composition according to this embodiment, the aerosol-generating agent content in the tobacco leaf is preferably 2.0 to 15.0% by mass, more preferably 3.0 to 12.0% by mass, and even more preferably 5.0 to 10.0% by mass. By ensuring that the aerosol-generating agent content in the tobacco leaf is 2.0% by mass or more, a sufficient amount of aerosol can be supplied to the user.

The aerosol-generating agent content of the tobacco composition according to this embodiment is preferably 3.2 to 19.0% by mass, more preferably 4.8 to 16.8% by mass, and even more preferably 7.0 to 14.8% by mass. By ensuring that the aerosol-generating agent content of the tobacco composition is 3.2% by mass or more, a sufficient amount of aerosol can be supplied to the user. The aerosol-generating agent content of the tobacco sheet, tobacco leaf, and tobacco composition is measured by gas chromatography.

(nicotine content)
The tobacco composition according to this embodiment may contain nicotine. Nicotine is a tobacco component that contributes to a pleasant flavor. In the tobacco composition according to this embodiment, the nicotine content of the tobacco sheet is preferably 0.5 to 5.0 mass%, more preferably 1.0 to 4.5 mass%, and even more preferably 1.0 to 4.0 mass%. If the nicotine content of the tobacco sheet exceeds 5.0 mass%, inhalation of the aerosol may cause an unpleasant sensation. Furthermore, if the nicotine content of the tobacco sheet is less than 0.5 mass%, inhalation of the aerosol may not provide a sufficient draw.

In the tobacco composition according to this embodiment, the nicotine content of the tobacco leaves is preferably 0.5 to 5.0% by mass, more preferably 1.0 to 4.5% by mass, and even more preferably 1.0 to 4.0% by mass. If the nicotine content of the tobacco leaves exceeds 5.0% by mass, the aerosol may cause an unpleasant sensation when inhaled. Furthermore, if the nicotine content of the tobacco leaves is less than 0.5% by mass, the aerosol may not provide a sufficient smoking sensation when inhaled.

The nicotine content of the tobacco composition according to this embodiment is preferably 0.5 to 5.0% by mass, more preferably 1.0 to 4.5% by mass, and even more preferably 1.0 to 4.0% by mass. If the nicotine content of the tobacco composition exceeds 5.0% by mass, the aerosol may be inhaled and cause discomfort. If the nicotine content of the tobacco composition is less than 0.5% by mass, the aerosol may not provide a satisfying draw when inhaled. The nicotine contents of the tobacco sheet, leaf tobacco, and tobacco composition are values measured by the following method. The nicotine content of each can be controlled within the above range by, for example, blending tobacco sheets and leaf tobacco with different nicotine contents.

(Method for measuring nicotine content)
2.0 g of sample is placed in a rotary dryer (rotary dryer) and dried at 80 ° C ± 1 ° C for 3 hours, and the moisture content W (mass%) of the sample is calculated from the mass loss. Next, 10 mL of distilled water, 20 mL of hexane, and 5 mL of 8 mol / L sodium hydroxide solution are added to 0.5 g of mass, and the mixture is shaken for 60 minutes to perform an extraction operation. After extraction, the supernatant (hexane phase) is subjected to gas chromatography (GC / FID) to quantify the amount of nicotine contained in the sample, and its content Bw (mass%) is calculated. From these values, the content Bd (mass%) of nicotine components contained in the sample on an absolute dry mass basis is calculated using the following formula.
Bd (mass%) = Bw/(100-W) x 100

(Neophytadiene content)
The tobacco composition according to the present embodiment can contain neophytadiene. Neophytadiene is a tobacco component that contributes to a good flavor. In the tobacco composition according to the present embodiment, the neophytadiene content of the tobacco sheet is preferably 0.01 to 0.10% by mass, more preferably 0.01 to 0.07% by mass, and even more preferably 0.01 to 0.05% by mass.

In the tobacco composition according to this embodiment, the neophytadiene content of the tobacco leaves is preferably 0.05% by mass or more, more preferably 0.05 to 0.30% by mass, even more preferably 0.05 to 0.25% by mass, and particularly preferably 0.10 to 0.20% by mass.

The neophytadiene content of the tobacco composition according to this embodiment is preferably 0.01% by mass or more, more preferably 0.01 to 0.22% by mass, even more preferably 0.01 to 0.18% by mass, and particularly preferably 0.05 to 0.15% by mass. The neophytadiene content of the tobacco sheet, leaf tobacco, and tobacco composition is a value measured by the following method. Furthermore, the respective neophytadiene contents can be controlled within the above range by, for example, blending tobacco sheets and leaf tobaccos with different neophytadiene contents.

(Method for measuring neophytadiene content)
(1) Weigh out 2 g of sample, place it in a cylindrical filter paper, and lightly pack it with absorbent cotton. Then, dry it under reduced pressure in a desiccator overnight, place it in a Soxhlet extractor, and extract it with dichloromethane (approximately 150 ml) in a water bath for 20 hours.
(2) Concentrate the dichloromethane extract under reduced pressure at 40°C, place it in a 50 ml measuring flask, and add dichloromethane to make up to 50 ml.
(3) 25 ml of the extract is placed in a pre-weighed 50 ml eggplant-shaped flask, dried under reduced pressure using a rotary evaporator in a water bath at 40°C, and then weighed.
(4) Place 10 ml of the extract into a conical flask smaller than 50 ml, and add 200 μl of n-hexadecane internal standard solution (Solution A).
(5) Solution A is concentrated to 20 μl in a nitrogen stream, and the solution is subjected to GC/MS analysis.

(Cembratrienediol (CBT) content)
The tobacco composition according to this embodiment can contain the tobacco component cembratrienediol (CBT). Cembratrienediol (CBT) is a volatile tobacco component that contributes to a good flavor. In the tobacco composition according to this embodiment, the cembratrienediol (CBT) content of the tobacco sheet is preferably 0.01 to 0.10% by mass, more preferably 0.01 to 0.07% by mass, and even more preferably 0.01 to 0.05% by mass.

In the tobacco composition according to this embodiment, the cembratrienediol (CBT) content of the tobacco leaves is preferably 0.01% by mass or more, more preferably 0.01 to 0.80% by mass, even more preferably 0.01 to 0.50% by mass, and particularly preferably 0.10 to 0.30% by mass.

The cembratriene diol (CBT) content of the tobacco composition according to this embodiment is preferably 0.01% by mass or more, more preferably 0.01 to 0.52% by mass, even more preferably 0.01 to 0.34% by mass, and particularly preferably 0.03 to 0.15% by mass. The cembratriene diol (CBT) content of the tobacco sheet, tobacco leaf, and tobacco composition is measured by the following method: 5 g of sample is weighed into a 100 ml screw tube, 50 ml of ethyl acetate is added, and the mixture is mixed thoroughly and allowed to stand overnight at room temperature. The mixture is filtered using filter paper, and a small amount of anhydrous sodium sulfate is added to the filtrate (extract) to dehydrate it. The mixture is then filtered again using filter paper, and the ethyl acetate in the dehydrated liquid is removed under reduced pressure. Ethyl acetate is added to the resulting dried product to dissolve it, and the resulting solution is subjected to GC/MS analysis. The cembratriene diol (CBT) content of each can be controlled within the above range, for example, by blending tobacco sheets and tobacco leaves with different cembratriene diol (CBT) contents.

(Types of tobacco sheets, physical properties)
The density of the tobacco sheet according to this embodiment is preferably 0.40 to 0.60 g/ ^cm3 , and more preferably 0.45 to 0.55 g/ ^cm3 . When the density of the tobacco sheet is 0.40 g/ ^cm3 or more, the amount of tobacco components contained in the tobacco sheet per volume can be increased, and the level and duration of flavor can be further improved. Furthermore, when the density of the tobacco sheet is 0.60 g/ ^cm3 or less, the tobacco sheet is easily warmed by heating, and the vaporization of the tobacco components at the beginning of use is promoted. The density of the tobacco sheet is a value calculated by dividing the weight per unit area (basis weight) by the thickness measured with a constant pressure thickness gauge.
Density of tobacco sheet (g/cm ³ )=basis weight (g/cm ² )/thickness (cm)

The tobacco sheet according to this embodiment may contain only one type of tobacco sheet, or may contain two or more types of tobacco sheets. When the tobacco sheet contains two or more types of tobacco sheets, it is preferable that the tobacco sheet contains two or more types of tobacco sheets with different densities. Low-density tobacco sheets warm up easily when heated, and can contribute to promoting the vaporization of tobacco components in the early stages of use. On the other hand, high-density tobacco sheets contain a higher content of tobacco components per volume, and can contribute to improving the level and duration of flavor.

For example, the tobacco sheet according to this embodiment preferably includes a first tobacco sheet having a density of less than 0.55 g/cm ³ and a second tobacco sheet having a density of 0.55 g/cm ³ or more. When the density of the low-density first tobacco sheet is less than 0.55 g/cm ³ , it is easily heated, and the vaporization of tobacco components is further promoted in the initial stage of use. Furthermore, when the density of the high-density second tobacco sheet is 0.55 g/cm ³ or more, the content of tobacco components per volume increases, further improving the level and duration of flavor. The density of the first tobacco sheet is preferably 0.40 g/cm ³ or more and less than 0.55 g/cm ³ , and more preferably 0.45 g/cm ³ or more and less than 0.55 g/cm ^3. The density of the second tobacco sheet is more preferably 0.55 to 1.00 g/cm ³ , and even more preferably 0.60 to 0.80 g/cm ³ . The tobacco sheet according to this embodiment may be composed of the first tobacco sheet and the second tobacco sheet.

The mass ratio of the first tobacco sheet to the second tobacco sheet contained in the tobacco sheet according to this embodiment is preferably first tobacco sheet:second tobacco sheet = 50-80:20-50. By having the mass ratio of the low-density first tobacco sheet be 50 mass% or more (the mass ratio of the second tobacco sheet be 50 mass% or less), the sheet is easily heated, further promoting the vaporization of tobacco components at the initial stage of use. Furthermore, by having the mass ratio of the first tobacco sheet be 80 mass% or less (the mass ratio of the second tobacco sheet be 20 mass% or more), the mass ratio of the high-density second tobacco sheet increases, increasing the tobacco component content per volume and further improving the flavor intensity and duration. The mass ratio of the first tobacco sheet to the second tobacco sheet is more preferably first tobacco sheet:second tobacco sheet = 55-80:20-45, and even more preferably 60-80:20-40.

The tobacco sheet according to this embodiment may also include a paper-processed tobacco sheet and a slurry tobacco sheet, which will be described later. In this case, the paper-processed tobacco sheet corresponds to the first tobacco sheet, and the slurry tobacco sheet corresponds to the second tobacco sheet. When the tobacco sheet includes a paper-processed tobacco sheet and a slurry tobacco sheet, the mass ratio of the paper-processed tobacco sheet to the slurry tobacco sheet is preferably paper-processed tobacco sheet:slurry tobacco sheet = 50-80:20-50, more preferably 55-80:20-45, and even more preferably 60-80:20-40.

The aerosol-generating agent content of the second tobacco sheet or the slurry tobacco sheet is preferably 20.0% by mass or less. By setting the aerosol-generating agent content to 20.0% by mass or less, the second tobacco sheet or the slurry tobacco sheet can be easily heated, allowing the tobacco components to be sufficiently vaporized. The aerosol-generating agent content is more preferably 10.0 to 20.0% by mass, and even more preferably 10.0 to 15.0% by mass.

The aerosol-generating agent content of the first tobacco sheet or the processed tobacco sheet is not particularly limited, but can be, for example, 10.0 to 30.0% by mass, and preferably 10.0 to 20.0% by mass.

(Tobacco leaf composition)
<Definition>
In this specification, "leaf tobacco" includes harvested tobacco leaves, harvested tobacco leaves that have been deboned and separated to produce lamina and midribs, aged leaf tobacco that has been aged (including curing), and shredded aged leaf tobacco that has been shredded to a specified size.

<Tobacco varieties>
A variety of tobacco varieties can be used. Examples include flue-cured, burley, oriental, native, other Nicotiana tabacum, and Nicotiana rustica varieties. These varieties can be used alone, or they can be blended in the process from leaf tobacco harvesting to shredding aged tobacco leaves to achieve the desired flavor. Details of the tobacco varieties are disclosed in "Encyclopedia of Tobacco," Tobacco Research Center, March 31, 2009.

<Tobacco variety blend>
As mentioned above, blending of tobacco varieties can be carried out during the process from leaf tobacco harvesting to the processing of aged leaf tobacco into shredded tobacco. Generally, a "blend" refers to a mixture of tobacco belonging to the same or different varieties, but in this specification, the combination of different aged leaf tobaccos or different shredded tobacco is also sometimes referred to as a "blend." Blending tobacco of the same variety but with different grades is also sometimes specifically referred to as a "cross blend."

Within each tobacco variety, tobacco leaves are graded based on various characteristics, such as place of origin, location within the plant, color, surface condition, size, and shape. It is believed that tobacco leaves contain over 300 chemical components, resulting in different chemical properties between different tobacco varieties. Furthermore, even within the same tobacco variety, different grades may have different chemical properties. Therefore, the aforementioned blending and cross-blending are carried out to obtain tobacco raw materials with desired characteristics and chemical properties.

<Tobacco leaf processing>
Examples of treatments that harvested leaf tobacco undergoes in the early stages include curing, processing at a raw material factory, and aging.

<Curing>
Tobacco leaves generally undergo a process called curing early after harvesting. Curing is a process for aging tobacco leaves, and typically includes processes such as drying and humidity control, as well as activating the activity of various enzymes contained in the tobacco leaves. The cured tobacco leaves are packed into cases and stored in a warehouse for a certain period of time before being transported to a raw material factory. In addition, in order to obtain tobacco leaves with low contents of benzo[a]pyrene and low-molecular-weight carboxylic acids and high contents of specific flavor components, the harvested tobacco leaves may be subjected to the process described in International Publication No. 2018/139068 instead of the above-mentioned curing.

<Processing and maturation at raw material factories>
After being transported to a raw material factory and subjected to curing, the leaf tobacco is unwrapped and then typically undergoes processes such as humidity control, deboning, and separation to produce lamina, backbone, etc. The re-dried lamina, backbone, etc. are then packed into cases and stored for long periods in a warehouse. This long-term storage process in a warehouse is sometimes referred to as aging. The aging period varies depending on the tobacco variety used, the desired flavor of the tobacco product, and the aging temperature, but is generally one year or more and two years or less. Leaf tobacco that has undergone curing, which is one form of aging, or a process alternative to curing as described above, and has further undergone aging is called "aged leaf tobacco."

Note that processing tobacco leaves into laminae and ribs, then packing them into cases and aging them is sometimes referred to as "post-boning aging." On the other hand, processing tobacco leaves transported to a raw material factory, packing them into cases and aging them without boning or separation, and then deboning and separating them after aging is sometimes referred to as "post-aging boning."

<Flavoring>
A flavoring may be added to the tobacco leaves. The type of flavoring is not particularly limited, and examples thereof include fragrances and flavorings from the viewpoint of imparting a good flavor. Optionally, colorants, humectants, and preservatives may also be included. The flavoring and optional ingredients may be in any form, such as liquid or solid. Furthermore, they may be a single component or a combination of multiple components.

Suitable flavors of the fragrance include those selected from tobacco extracts and tobacco components, sugar and sugar-based flavors, licorice, cocoa, chocolate, fruit juice and fruits, spices, liquor, herbs, vanilla, and floral flavors, either alone or in combination.

The flavoring agent can be any of a wide variety of flavoring ingredients, such as those described in "Collection of Well-Known and Commonly Used Techniques (Fragrances)" (March 14, 2007, published by the Japan Patent Office), "Latest Encyclopedia of Flavors (Popular Edition)" (February 25, 2012, edited by Soichi Arai, Akio Kobayashi, Izumi Yajima, and Michiaki Kawasaki, Asakura Shoten), and "Tobacco Flavoring for Smoking Products" (June 1972, R. J. Reynolds Tobacco Company).

The fragrance may be, for example, a fragrance selected from isothiocyanates, indole and its derivatives, ethers, esters, ketones, fatty acids, higher aliphatic alcohols, higher aliphatic aldehydes, higher aliphatic hydrocarbons, thioethers, thiols, terpene hydrocarbons, phenol ethers, phenols, furfural and its derivatives, aromatic alcohols, aromatic aldehydes, lactones, etc., either alone or in combination. Materials that impart a cooling or warming sensation may also be used.

More specifically, the fragrances in question are 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, and DL-citronellol. alcohol, clary sage extract, coffee, cognac oil, coriander oil, cumin aldehyde, davana oil, δ-decalactone, γ-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 lactone, 4-hydroxy-4-(3-hydroxy-1-butenyl)-3,5,5-trimethyl-2-cyclohexen-1-one, 4-(para-hydroxyphenyl)-2-butanone, sodium 4-hydroxyundecanoate, immortelle Ingredients: citric acid, citric acid (citric acid), ... Root oil, palmitic acid, ω-pentadecalactone, 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-cyclohexadienyl)2-buten-4-one, 2,3,5-trimethylpyrazine, γ-undecalactone, γ-valerolactone, vanilla extract, vanillin, veratraldehyde, violet leaf absolute, citral, mandarin oil, 4-(acetoxymethyl)toluene, 2-methyl-1-butanol, ethyl 10-undecenoate, isoamyl hexanoate, 1-phenylethylacetic acid, lauric acid, 8-mercaptomenthone, sinensal, hexyl butyrate, plant powders (herb powders, flower powders, spice powders, tea powders: cocoa powder, carob powder, coriander powder, licorice powder, oleic acid) Peel powder, rose pip powder, chamomile flower powder, lemon verbena powder, peppermint powder, leaf powder, spearmint powder, black tea powder, etc.), camphor, isopulegol, cineole, peppermint oil, eucalyptus oil, 2-l-menthoxyethanol (COOLACT® 5), 3-l-menthoxypropane-1,2-diol (COOLACT® 10), l-menthyl-3-hydroxybutyrate (COOLACT® 20), p-menthane-3,8-diol (COOLACT® 38D), N-(2-hydroxy-2-phenylethyl)-2-isopropyl-5,5-dimethylcyclohexane-1-carboxamide (COOLACT® 370), N-(4-(cyanomethyl)phenyl)-2-isopropyl-5,5 -dimethylcyclohexanecarboxamide (COOLACT® 400), N-(3-hydroxy-4-methoxyphenyl)-2-isopropyl-5,5-dimethylcyclohexanecarboxamide, N-ethyl-p-menthane-3-carboxamide (WS-3), ethyl-2-(p-menthane-3-carboxamide)acetate (WS-5), N-(4-methoxyphenyl)-p-menthanecarboxamide (WS-12), 2-isopropyl-N,2,3-trimethylbutyramide (WS-23), 3-l-menthoxy-2-methylpropane-1,2-diol, 2-l-menthoxyethan-1-ol, 3-l-menthoxypropan-1-ol, 4-l-menthoxybutan-1-ol, menthyl lactate (FEMA 3748), menthone glycerin acetal (Frescolat MGA, FEMA3807, FEMA3808), 2-(2-l-menthyloxyethyl)ethanol, menthyl glyoxylate, menthyl 2-pyrrolidone-5-carboxylate, menthyl succinate (FEMA3810), N-(2-(pyridin-2-yl)-ethyl)-3-p-menthanecarboxamide (FEMA4549), N-(ethoxycarbonylmethyl)-p-menthane-3-carboxamide, N-(4-cyanomethylphenyl)-p-menthanecarboxamide, and N-(4-aminocarbonylphenyl)-p-menthane.

Examples of such flavoring agents include materials that impart sweetness, sourness, saltiness, umami, bitterness, astringency, and richness. Examples of materials that impart sweetness include sugars, sugar alcohols, and sweeteners. Examples of sugars include monosaccharides, disaccharides, oligosaccharides, and polysaccharides. Examples of sweeteners include natural sweeteners and synthetic sweeteners. Examples of materials that impart sourness include organic acids (and their sodium salts). Examples of organic acids include acetic acid, adipic acid, citric acid, lactic acid, malic acid, succinic acid, and tartaric acid. Examples of materials that impart bitterness include caffeine (extract), naringin, and wormwood extract. Examples of materials that impart saltiness include sodium chloride, potassium chloride, sodium citrate, potassium citrate, sodium acetate, and potassium acetate. Examples of ingredients that impart umami include sodium glutamate, sodium inosinate, and sodium guanylate. Examples of ingredients that impart astringency include tannin and shibuol.

Examples of such colorants include natural and synthetic dyes. Natural dyes include caramel, turmeric, red jasmine, gardenia, safflower, carotene, marigold, and annatto. Synthetic dyes include tar dyes and titanium oxide.

Examples of such humectants include lipids (waxes, glycerin, medium-chain triglycerides, fatty acids (short-, medium-, and long-chain fatty acids)), polyols (glycerol, polyethylene glycol), etc.

Examples of such preservatives include acetic acid, benzoic acid, propionic acid, citric acid, lactic acid, malic acid, sorbic acid, tartaric acid (and their salts), and nisin.

When flavoring is added to leaf tobacco, the content of flavoring in the leaf tobacco is not particularly limited, but from the perspective of imparting a good flavor, it is, for example, typically 10 ppm or more, preferably 10,000 ppm or more, more preferably 50,000 ppm or more, and typically 250,000 ppm or less, preferably 200,000 ppm or less, more preferably 150,000 ppm or less, and even more preferably 100,000 ppm or less.

<Cutting tobacco leaves>
The leaf tobacco may be shredded leaf tobacco (hereinafter also referred to as leaf tobacco shreds). Leaf tobacco shreds are aged leaf tobacco or the like shredded to a predetermined size. The aged leaf tobacco used for leaf tobacco shreds is not particularly limited, but examples thereof include tobacco that has been deboned and separated into lamina and midrib.

<Method for preparing shredded tobacco leaves>
There are no particular limitations on the size or preparation method of leaf tobacco shreds. One example is shredded aged leaf tobacco to a width of 0.3 mm or more and 2.0 mm or less and a length of 3 mm or more and 30 mm or less. When considered as a flavor source, various shred widths can be set by taking into account factors such as thermal conductivity. Leaf tobacco shreds of this size are preferable for filling the wrapper, as described below. Furthermore, using two or more types of leaf tobacco with different shred widths within the range of 0.3 to 2.0 mm is preferable from the perspective of widely varying the timing of puffs at which the flavor level is perceived. For example, a first leaf tobacco with a shred width of 0.3 to 1.2 mm and a second leaf tobacco with a shred width of 0.8 to 1.7 mm (the second leaf tobacco having a larger shred width than the first leaf tobacco) can be used. A smaller shred width increases the surface area per unit mass, resulting in higher thermal conduction efficiency. Higher thermal conduction efficiency allows the tobacco filler to be heated in a shorter time. On the other hand, by increasing the pitch, the surface area per unit mass becomes smaller and the heat conduction efficiency becomes lower, so that it becomes possible to heat the tobacco filler for a longer period of time.

(Configuration of tobacco sheet)
A tobacco sheet is obtained by forming a composition containing aged leaf tobacco into a sheet shape. The aged leaf tobacco used for the tobacco sheet is not particularly limited, but examples thereof include tobacco that has been deboned and separated into lamina and midrib. In addition, in this specification, the term "sheet" refers to a shape having a pair of approximately parallel main surfaces and side surfaces. The tobacco sheet contains fibers such as pulp.

<Method for forming tobacco sheets>
Tobacco sheets can be formed by known methods such as papermaking, casting, and rolling. Details of various tobacco sheets formed by these methods are disclosed in "Encyclopedia of Tobacco," published by the Tobacco Research Center on March 31, 2009. In this specification, tobacco sheets formed by the papermaking method are referred to as "papermaking tobacco sheets," and tobacco sheets formed by the casting method (slurry method) are referred to as "slurry tobacco sheets." Due to their unique compositions, both tobacco sheets are less likely to retain lipophilic components. On the other hand, as tobacco sheets, they possess the property of better retaining hydrophilic vapor sources such as glycerin, propylene glycol, reducing sugars, and amino acids, as well as precursors of heated aromas. The following provides an overview of the papermaking tobacco sheets, slurry tobacco sheets, and rolled tobacco sheets described above.

<Tobacco sheet molding method (papermaking method)>
Examples of methods for forming tobacco sheets by papermaking include methods including the following steps.
(1) A process for extracting water-soluble components from aged tobacco leaves by crushing the aged tobacco leaves and mixing and stirring the crushed leaves with a solvent such as water.
(2) A step of separating the extract into a water extract containing water-soluble components and a residue.
(3) A step of concentrating the aqueous extract by drying under reduced pressure.
(4) A process of adding pulp to the residue and fiberizing it in a refiner to obtain a mixture (homogenization process).
(5) A step of making paper from the mixture of the fiberized residue and pulp.
(6) A step of adding a concentrated solution of the water extract to the paper-made sheet and drying it to obtain a tobacco sheet.
When forming a tobacco sheet using this method, a step of removing some of the components such as nitrosamines may be added (see JP-A No. 2004-510422).

<Tobacco sheet molding method (casting method)>
An example of a method for forming a tobacco sheet by the casting method (slurry method) includes the following steps.
(1) A step of mixing water, pulp, a binder, and ground aged tobacco leaves to obtain a mixture (homogenization step).
(2) A step of thinly spreading (casting) the mixture and drying it to form a tobacco sheet.
When forming a tobacco sheet using this method, a step may be added in which a slurry of water, pulp, binder, and crushed tobacco leaves is mixed with ultraviolet light or X-rays to remove some of the components such as nitrosamines.

<Tobacco sheet molding method (rolling method)>
An example of a method for forming a tobacco sheet by rolling includes the following steps.
(1) A step of mixing water, pulp, a binder, and ground aged tobacco leaves to obtain a mixture (homogenization step).
(2) A step of rolling the mixture by feeding it between a plurality of rolling rollers.
(3) A process in which the rolled product on the rolling rollers is peeled off with a doctor knife, transferred to a net conveyor, and dried in a dryer.
When forming a tobacco sheet using this method, the surface of each rolling roller may be heated or cooled, and the rotation speed of each rolling roller may be adjusted, depending on the purpose. Furthermore, by adjusting the distance between each rolling roller, a tobacco sheet with a desired basis weight can be obtained.

<Average fiber length of tobacco fibers and freeness of mixture during homogenization process>
In the homogenization process described in each of the above methods, from the viewpoint of obtaining a tobacco sheet having a certain strength, it is preferable that the average fiber length of the tobacco fibers contained in each mixture is 200 μm or more and 1000 μm or less, and that the freeness of each mixture is 20°SR or more and 50°SR or less. The average fiber length of the tobacco fibers is measured by optical automatic analysis (JIS P8226-2) using non-polarized light with a fiber count of 20,000 or more. The freeness is measured by the Schopper-Riegler method (JIS P8121).

<Tobacco sheet dimensions>
The length and width of the tobacco sheet are not particularly limited, but can be adjusted appropriately to suit the manner in which the tobacco sheet is filled into a wrapper (described later) that is to be thoroughly mixed with ordinary tobacco shreds. The thickness of the tobacco sheet is not particularly limited, but is preferably 100 μm or more and 1000 μm or less, and more preferably 200 μm or more and 600 μm or less, in consideration of the balance between heat transfer efficiency and strength.

<Composition of tobacco sheet>
The composition of the tobacco sheet is not particularly limited, but may include, for example, aged tobacco leaves, a binder, fibers such as pulp, an aerosol-generating agent, a flavoring, and the like. The content of aged tobacco leaves is preferably 50% by mass or more and 95% by mass or less relative to the total mass of the tobacco sheet. Examples of binders include guar gum, xanthan gum, CMC (carboxymethyl cellulose), and CMC-Na (sodium salt of carboxymethyl cellulose). The content of the binder is preferably 1% by mass or more and 10% by mass or less relative to the total mass of the tobacco sheet. The content of fibers such as pulp is not particularly limited, but is preferably 1% by mass or more and 10% by mass or less relative to the total mass of the tobacco sheet. Examples of flavorings include the flavorings described above. When a flavoring agent is contained in the tobacco sheet, the content of the flavoring agent is not particularly limited, but from the viewpoint of imparting a good flavor, it is, for example, usually 10 ppm or more, preferably 10,000 ppm or more, more preferably 50,000 ppm or more, and usually 250,000 ppm or less, preferably 200,000 ppm, more preferably 150,000 ppm or less, and even more preferably 100,000 ppm or less.

<Tobacco shredding on tobacco sheets>
The tobacco sheet may be tobacco shreds (hereinafter also referred to as tobacco sheet shreds). Tobacco sheet shreds are tobacco sheets shredded to a predetermined size. There are no particular limitations on the size or preparation method of the tobacco sheet shreds. One example is a tobacco sheet shredded to a width of 0.3 mm or more and 2.0 mm or less and a length of 3 mm or more and 30 mm or less. Tobacco sheet shreds of this size are preferable for filling a wrapper, as described below. Furthermore, a shred width of 0.3 to 1.0 mm is preferable from the viewpoint of suppressing delay in the development of the inherent flavor of the tobacco sheet. Furthermore, when considering the tobacco sheet as not only a vapor source but also a hydrophilic flavor generating source, it is preferable to set various shred widths taking into consideration factors such as thermal conductivity. Furthermore, using two or more types of tobacco sheets with different shred widths within the range of 0.3 to 2.0 mm is preferable from the viewpoint of widely varying the timing of the puff at which the flavor intensity is perceived. For example, a first tobacco sheet with a cut width of 0.3 to 1.2 mm and a second tobacco sheet with a cut width of 0.8 to 1.7 mm (the second tobacco sheet has a larger cut width than the first tobacco sheet) can be used. When the cut width is small, the surface area per unit mass increases, and the thermal conduction efficiency increases. The high thermal conduction efficiency makes it possible to heat the tobacco filler in a short time. On the other hand, when the cut width is large, the surface area per unit mass decreases, and the thermal conduction efficiency decreases, making it possible to heat the tobacco filler over a long time.

(Other additives)
The tobacco composition according to this embodiment may optionally contain other additives in addition to the tobacco sheet and the tobacco leaves. Examples of such additives include a flavor-supported polysaccharide sheet, which serves as a solid additive supporting a flavor. The addition of a flavor-supported polysaccharide sheet has the advantage of increasing the flavor and taste components present during use of a non-combustion heating flavor inhalation article. Flavor-supported polysaccharide sheets are disclosed, for example, in Japanese Patent Nos. 5941988, 5934799, 5514953, and 5481574. These other additives may be contained in one type or in two or more types. However, the combined mass ratio of the tobacco sheet and the tobacco leaves relative to 100% by mass of the tobacco composition is preferably 80% by mass or more, more preferably 90% by mass or more, and even more preferably 93% by mass or more. Alternatively, the tobacco composition may be composed of the tobacco sheet and the tobacco leaves without containing the other additives.

(Moisture content of tobacco composition)
The moisture content of the tobacco composition according to this embodiment can be 10% by mass or more and 15% by mass or less, and preferably 11% by mass or more and 13% by mass or less, relative to the total mass of the tobacco composition. This moisture content can suppress the occurrence of stains after the tobacco composition is filled into a wrapper.

(Method for producing tobacco composition)
The method for producing the tobacco composition according to this embodiment is not particularly limited, and the composition can be produced by mixing the tobacco sheet, the tobacco leaves, and optionally the other additives in a predetermined blending ratio using a known method.

[Tobacco-containing segment]
The tobacco-containing segment according to the present embodiment includes a tubular wrapper and a tobacco filler in which the tobacco composition according to the present embodiment is filled within the wrapper. Because the tobacco-containing segment according to the present embodiment includes the tobacco composition according to the present embodiment, it is possible to ensure a sufficient amount of smoke during use, while reducing the fibrous odor and improving the level and persistence of flavor. Furthermore, the tobacco-containing segment can be produced at low cost.

The tobacco filler refers to a product in which the tobacco composition according to this embodiment is filled in a predetermined manner within a cylindrical wrapper. Examples of wrappers include, but are not limited to, cylindrical cigarette paper. The tobacco-containing segment is formed, for example, by wrapping a cigarette paper or other wrapper with the tobacco composition on the inside.

The tobacco-containing segment preferably has a cylindrical shape. In this case, the aspect ratio, expressed as the height of the tobacco-containing segment in the major axis direction relative to the width of the base of the tobacco-containing segment, is preferably, but is not limited to, 1 or greater. The shape of the base is not limited and may be polygonal, rounded polygonal, circular, elliptical, etc., and the width is the diameter if the base is circular, the major axis if the base is elliptical, and the diameter of the circumscribed circle or the major axis of the circumscribed ellipse if the base is polygonal or rounded polygonal. For example, if the base is circular, the diameter can be determined, and this diameter is the width, and the length perpendicular to this is the height. The dimensions of the tobacco-containing segment are not particularly limited, but examples include a length of 10 mm or more and 70 mm or less, and a width of 4 mm or more and 9 mm or less. The tobacco filler in the tobacco-containing segment may have a fitting portion for a heater that heats the tobacco filler.

The packing density of the tobacco composition in the tobacco filler is preferably 0.25 to 0.45 g/ ^cm3 . A packing density of 0.25 g/cm3 or ^more ensures sufficient winding hardness. Furthermore, a packing density of 0.45 g/cm3 ^{or less} allows the filling amount of the tobacco composition to be reduced, thereby reducing production costs. The packing density is more preferably 0.29 to 0.42 g/ ^cm3 , and even more preferably 0.30 to 0.39 g/ ^cm3 .

[Non-combustion heating type flavor inhaler]
The non-combustion and heating type flavor inhaler according to the present embodiment includes the tobacco-containing segment according to the present embodiment. Because the non-combustion and heating type flavor inhaler according to the present embodiment includes the tobacco-containing segment according to the present embodiment, it is possible to ensure a sufficient amount of smoke during use, reduce the fibrous odor, and improve the intensity and persistence of the flavor. Furthermore, the non-combustion and heating type flavor inhaler according to the present embodiment can be manufactured at low cost.

An example of a non-combustion and heating type flavor inhalation device according to this embodiment is shown in Figure 1. The non-combustion and heating type flavor inhalation device 1 shown in Figure 1 comprises a tobacco-containing segment 2 according to this embodiment, a cylindrical cooling segment 3 having perforations 8 on its circumference, a center-hole segment 4, and a filter segment 5. The non-combustion and heating type flavor inhalation device according to this embodiment may also have other segments in addition to the tobacco-containing segment, cooling segment, center-hole segment, and filter segment.

The axial length of the non-combustion and heating type flavor inhalation device according to this embodiment is not particularly limited, but is preferably 40 mm to 90 mm, more preferably 50 mm to 75 mm, and even more preferably 50 mm to 60 mm. The circumferential length of the non-combustion and heating type flavor inhalation device is preferably 16 mm to 25 mm, more preferably 20 mm to 24 mm, and even more preferably 21 mm to 23 mm. For example, the tobacco-containing segment may be 20 mm long, the cooling segment 20 mm long, the center hole segment 8 mm long, and the filter segment 7 mm long. The length of the filter segment may be selected within a range of 4 mm to 10 mm. The airflow resistance of the filter segment is selected to be 15 mm _H2O /seg or more and 60 mm _H2O /seg or less per segment. These individual segment lengths may be appropriately adjusted depending on manufacturing suitability, required quality, and the like. Furthermore, even if a center hole segment is not used and only a filter segment is disposed downstream of the cooling segment, it can still function as a non-combustion heating type flavor inhaler.

(Tobacco-containing segment)
The tobacco-containing segment 2 is the tobacco-containing segment according to the present embodiment. As shown in Figure 1, when the tobacco-containing segment 2 is heated, the tobacco components (flavor components), aerosol-generating agent, and water contained in the tobacco filler are vaporized, and these vapors are transferred to the mouthpiece segment 6 by inhalation.

(Cooling segment)
1, the cooling segment 3 can be configured as a cylindrical member 7. The cylindrical member 7 may be, for example, a cardboard tube formed into a cylindrical shape.

The total surface area of the cooling segment can be 300 mm ² /mm or more and 1000 mm ² /mm or less. This surface area is the surface area per mm of the length (mm) of the cooling segment in the airflow direction. The total surface area of the cooling segment is preferably 400 mm ² /mm or more, more preferably 450 mm ² /mm or more, and is preferably 600 mm ² /mm or less, more preferably 550 mm ² /mm or less.

It is desirable for the cooling segment's internal structure to have a large total surface area. Thus, in a preferred embodiment, the cooling segment may be formed from a thin sheet of material that is wrinkled to form channels, and then pleated, gathered, and folded. The more folds or pleats within a given volume of the element, the greater the total surface area of the cooling segment.

In some embodiments, the thickness of the constituent material of the cooling segment may be 5 μm or more and 500 μm or less, for example, 10 μm or more and 250 μm or less.

The aerosol cooling element can be formed from a material having a specific surface area of 10 mm ² /mg or more and 100 mm ² /mg or less. In one embodiment, the specific surface area of the constituent material can be about 35 mm ² /mg. The specific surface area can be determined by considering a material with a known width and thickness. For example, the material can be polylactic acid with an average thickness of 50 μm, with a variation of ±2 μm. If the material also has a known width, for example, between 200 mm or more and 250 mm or less, the specific surface area and density can be calculated.

The tubular member 7 and the mouthpiece lining paper 12 (described later) are provided with perforations 8 that penetrate both. The presence of the perforations 8 allows outside air to be introduced into the cooling segment 3 during inhalation. As a result, the vaporized components of the aerosol generated by heating the tobacco-containing segment 2 come into contact with the outside air, their temperature drops, and they liquefy, forming an aerosol. The diameter (distance across) of the perforations 8 is not particularly limited, but may be, for example, 0.5 mm or more and 1.5 mm or less. The number of perforations 8 is not particularly limited, and may be one, two, or more. For example, multiple perforations 8 may be provided around the circumference of the cooling segment 3.

The amount of outside air introduced through the perforations 8 is preferably 85% by volume or less, more preferably 80% by volume or less, of the total volume of gas inhaled by the user. By keeping the outside air volume ratio at 85% by volume or less, it is possible to sufficiently suppress the reduction in flavor due to dilution by outside air. This is also known as the ventilation ratio. From the perspective of cooling performance, the lower limit of the ventilation ratio range is preferably 55% by volume or more, more preferably 60% by volume or more.

Preferably, the cooling segment offers little resistance to air passing through the tobacco-containing segment. Preferably, the cooling segment does not substantially affect the resistance to draw of the non-combustion heating flavor inhalation device. Resistance to draw (RTD) is the pressure required to force air through the entire length of the object under a test at 22°C and 101 kPa (760 Torr) with a flow rate of 17.5 ml/sec. RTD is typically expressed in _mmH2O and is measured in accordance with ISO 6565:2011. Therefore, it is preferable that the pressure drop from the upstream end of the cooling segment to the downstream end of the cooling segment is small. To achieve this, it is preferable that the longitudinal porosity is greater than 50% and the airflow path through the cooling segment is relatively unrestricted. The longitudinal porosity of the cooling segment can be determined by the ratio of the cross-sectional area of the material forming the cooling segment to the internal cross-sectional area of the cooling segment.

In some embodiments, the generated aerosol may experience a temperature drop of 10°C or more as it passes through the cooling segment and is drawn by the user. In another embodiment, the temperature drop may be 15°C or more, and in yet another embodiment, 20°C or more.

The cooling segment may be constructed from a sheet material selected from the group consisting of metal foil, polymer sheet, and substantially non-perforated paper or cardboard. In one embodiment, the cooling segment may comprise a sheet material selected from the group consisting of polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polylactic acid, cellulose acetate, and aluminum foil. The construction material of the cooling segment may be made from a biodegradable material, such as non-perforated paper, or a biodegradable polymer such as polylactic acid, or a starch-based copolymer.

Preferably, the airflow through the cooling segments does not substantially deviate between adjacent segments. In other words, the airflow through the cooling segments preferably follows the longitudinal segments without substantial radial deviation. In some embodiments, the cooling segments are formed from a material that has low porosity or is substantially pore-free, except for the longitudinally extending channels. The material used to define or form the longitudinally extending channels, e.g., a creped or gathered sheet, has low porosity or is substantially pore-free.

As noted above, the cooling segment may comprise a wrinkled, pleated, gathered, or folded sheet of suitable construction material. The cross-sectional profile of such an element may exhibit randomly oriented channels. The cooling segment may be formed by other means. For example, the cooling segment may be formed from a bundle of longitudinally extending tubes. The cooling segment may be formed by extrusion, molding, lamination, injection, or chopping of a suitable material.

The cooling segment can be formed, for example, by wrapping a pleated, gathered, or folded sheet material in a wrapping paper. In some embodiments, the cooling segment can include a sheet of crinkled material gathered into a rod shape and bound by a wrapper, e.g., a filter paper wrapping paper.

The cooling segment can be formed in a rod shape with an axial length of, for example, 7 mm or more and 28 mm or less. For example, the axial length of the cooling segment can be 18 mm.

In some embodiments, the cooling segment may have a substantially circular axial cross-sectional shape and a diameter of at least 5 mm and not more than 10 mm. For example, the diameter of the cooling segment may be approximately 7 mm.

(Center hole segment)
The center hole segment is composed of a filling layer having one or more hollow portions and an inner plug wrapper (inner wrapping paper) covering the filling layer. For example, as shown in FIG. 1, the center hole segment 4 is composed of a second filling layer 9 having a hollow portion and a second inner plug wrapper 10 covering the second filling layer 9. The center hole segment 4 functions to increase the strength of the mouthpiece segment 6. The second filling layer 9 can be, for example, a rod with an inner diameter of 5.0 mm or more and 1.0 mm or less, which is densely packed with cellulose acetate fibers and hardened by adding a plasticizer containing triacetin in an amount of 6% by mass or more and 20% by mass or less relative to the mass of cellulose acetate. Because the second filling layer 9 has a high fiber packing density, during inhalation, air and aerosol flow only through the hollow portions, with almost no flow within the second filling layer 9. Because the second filling layer 9 inside the center hole segment 4 is a fiber-packed layer, the feel from the outside during use is less likely to cause discomfort to the user. It is also possible for the center hole segment 4 not to have the second inner plug wrapper 10 and for its shape to be maintained by thermoforming.

(filter segment)
The configuration of the filter segment is not particularly limited, and may be composed of one or more packed layers. The outside of the packed layer may be wrapped with one or more sheets of wrapping paper. The airflow resistance per filter segment can be appropriately changed depending on the amount and material of the filler filled in the filter segment. For example, when the filler is cellulose acetate fiber, the airflow resistance can be increased by increasing the amount of cellulose acetate fiber filled in the filter segment. When the filler is cellulose acetate fiber, the packing density of the cellulose acetate fiber can be 0.13 to 0.18 g/ ^cm3 . The airflow resistance is a value measured using an airflow resistance measuring device (product name: SODIMAX, manufactured by SODIM).

The circumferential length of the filter segment is not particularly limited, but is preferably 16 to 25 mm, more preferably 20 to 24 mm, and even more preferably 21 to 23 mm. The axial length of the filter segment can be selected from 4 to 10 mm, and is selected so that the airflow resistance is 15 to 60 mmH ₂ O/seg. The axial length of the filter segment is preferably 5 to 9 mm, more preferably 6 to 8 mm. The cross-sectional shape of the filter segment is not particularly limited, but can be, for example, circular, elliptical, polygonal, etc. In addition, a flavor-containing breakable capsule, flavor beads, or flavor may be directly added to the filter segment.

As shown in Figure 1, the center hole segment 4 and the filter segment 5 can be connected by an outer plug wrapper (outer wrapping paper) 11. The outer plug wrapper 11 can be, for example, a cylindrical piece of paper. The tobacco-containing segment 2, the cooling segment 3, and the connected center hole segment 4 and filter segment 5 can be connected by a mouthpiece lining paper 12. These connections can be made, for example, by applying glue such as vinyl acetate glue to the inner surface of the mouthpiece lining paper 12, and then inserting and rolling the three segments. Note that these segments may also be connected in multiple places using multiple lining papers.

[Non-combustion heating type flavor inhalation system]
The non-combustion heating type flavor inhalation system according to this embodiment may include the non-combustion heating type flavor inhalation implement according to this embodiment and a heating device that heats the tobacco-containing segment of the non-combustion heating type flavor inhalation implement. The non-combustion heating type flavor inhalation system according to this embodiment may have other configurations in addition to the non-combustion heating type flavor inhalation implement according to this embodiment and the heating device.

An example of a non-combustion heating type flavor inhalation system according to this embodiment is shown in Figure 2. The non-combustion heating type flavor inhalation system shown in Figure 2 comprises a non-combustion heating type flavor inhalation device 1 according to this embodiment and a heating device 13 that heats the tobacco-containing segment of the non-combustion heating type flavor inhalation device 1 from the outside.

Figure 2(a) shows the state before the non-combustion heating type flavor inhalation device 1 is inserted into the heating device 13, and Figure 2(b) shows the state after the non-combustion heating type flavor inhalation device 1 is inserted into the heating device 13 and heated. The heating device 13 shown in Figure 2 comprises a body 14, a heater 15, a metal tube 16, a battery unit 17, and a control unit 18. The body 14 has a cylindrical recess 19, and the heater 15 and metal tube 16 are disposed on the inner side of the recess 19 at a position corresponding to the tobacco-containing segment of the non-combustion heating type flavor inhalation device 1 inserted into the recess 19. The heater 15 may be an electrical resistance heater, and is heated by being supplied with power from the battery unit 17 in response to instructions from the control unit 18, which controls the temperature. The heat generated by the heater 15 is transferred to the tobacco-containing segment of the non-combustion heating type flavor inhalation device 1 via the metal tube 16, which has high thermal conductivity.

In Figure 2(b), there is a gap between the outer periphery of the non-combustion heating type flavor inhalation device 1 and the inner periphery of the metal tube 16 due to the schematic illustration, but in reality, for the purpose of efficient heat transfer, it is preferable that there be no gap between the outer periphery of the non-combustion heating type flavor inhalation device 1 and the inner periphery of the metal tube 16. Note that although the heating device 13 heats the tobacco-containing segment of the non-combustion heating type flavor inhalation device 1 from the outside, it may also heat from the inside.

The heating temperature of the heating device is not particularly limited, but is preferably 400°C or less, more preferably 150°C to 400°C, and even more preferably 200°C to 350°C. Note that the heating temperature refers to the temperature of the heater in the heating device.

[Non-combustible heated tobacco products]
The non-combustion heated tobacco product according to this embodiment comprises an electric heating device and a non-combustion heated tobacco stick for use with the electric heating device. The non-combustion heated tobacco stick comprises a tobacco rod portion having a tobacco filler containing the tobacco composition according to this embodiment and cigarette paper surrounding the tobacco filler, a mouthpiece portion coaxially connected to the tobacco rod portion by being wrapped together with the tobacco rod portion in tipping paper, and a ventilation hole provided in the mouthpiece portion. The electric heating device has a hollow tube heater configured to form an internal heating chamber into which the non-combustion heated tobacco stick can be inserted. The hollow tube heater has a compression tube portion for compressing the tobacco rod portion from the outer periphery when the non-combustion heated tobacco stick is inserted, and a heating wall portion formed by at least a part of the compression tube portion for heating the tobacco rod portion from the outer periphery. The cross-sectional area of the tobacco rod portion is relatively larger than the internal cross-sectional area of the compression tube portion, and the tobacco rod portion inserted into the compression tube portion is compressed by the inner wall surface of the compression tube portion.

As an example, Figure 3 shows a state in which a tobacco stick 100 has been inserted to a specified position into the heating chamber 60 of the electrically heated device according to this embodiment. Also, Figure 4 shows a cross section (B-B cross section) at position B-B of the hollow tube heater 21 shown in Figure 3. In Figure 4, the outline (contour) of the tobacco stick 100 in its original form in the cross-sectional direction is indicated by the symbol L2.

As shown in FIG. 3 , the axial length of the compression tube portion 63 in the hollow tube heater 21, from the upper end of the compression tube portion 63 to the positioning bottom surface 731 of the base portion 73, is greater than the length of the tobacco rod portion 110. Therefore, when a tobacco stick 100 is inserted up to a specified position in the heating chamber 60 in the hollow tube heater 21, the entire tobacco rod portion 110 and a portion of the mouthpiece portion 120 are inserted into the compression tube portion 63. As a result, the entire tobacco rod portion 110 and a portion of the mouthpiece portion 120 are sandwiched between the inner wall surfaces 631A, 631A of the pair of sandwiching walls 631, 631, and are compressed from the outer periphery.

When the user turns on the operation button of the electrically heated device in a specified manner, the control unit starts supplying power from the power source to the hollow tube heater 21, and heating control begins to heat the tobacco rod portion 110 of the tobacco stick 100. When heating control begins, the heater element 23 installed in the heating wall portion RH of the compression tube portion 63 of the hollow tube heater 21 is energized, causing the heating wall portion RH to generate heat. This heats the tobacco filler 111 contained in the tobacco rod portion 110 of the tobacco stick 100 without burning it, and generates vapor containing an aerosol-generating agent and tobacco flavor components.

The entire axial area of the compression tube portion 63 of the hollow tube heater 21 according to this embodiment is formed as a heating wall portion RH. Therefore, when the hollow tube heater 21 is activated, the tobacco rod portion 110 can be heated while being compressed by the compression tube portion 63 (heating wall portion RH). In this way, by compressing and heating the tobacco rod portion 110 from the outer periphery, the heat generated by the heating wall portion RH (heater element 23) can be efficiently transferred to the tobacco filler 111 in the tobacco rod portion 110. As a result, the tobacco filler 111 in the tobacco rod portion 110 is efficiently heated, thereby increasing the amount of aerosol and flavor components delivered.

Specific examples of this embodiment are described below, but the present invention is not limited to these.

[Example 1]
(1) Production of Tobacco Sheet A tobacco sheet was produced by the paper-making method using aged leaf tobacco (lamina: 66 parts by mass, rib: 8 parts by mass), 11 parts by mass of cellulose pulp, and 15 parts by mass of glycerin. The tobacco sheet had an aerosol-generating agent (glycerin) content of 15.0% by mass. The tobacco sheet had a reducing sugar content of 4.0% by mass. The tobacco sheet had a nicotine content of 1.94% by mass. The tobacco sheet had a neophytadiene content of 0.037% by mass. The tobacco sheet had a cembratrienediol (CBT) content of 0.031% by mass. The tobacco sheet had a density of 0.48 g/ ^cm3 . The content and density of each component were measured by the methods described above.

(2) Production of Leaf Tobacco Leaf tobacco was a mixture of flue-cured tobacco (20 parts by mass of flue-cured A, 20 parts by mass of flue-cured B, 5 parts by mass of flue-cured C, and 40 parts by mass of flue-cured D), 5 parts by mass of Orient, and 10 parts by mass of Burley. Glycerin was added to the leaf tobacco as an aerosol-generating agent to a glycerin content of 7.5% by mass. The leaf tobacco had a reducing sugar content of 9.0% by mass. The leaf tobacco had a nicotine content of 2.64% by mass. The leaf tobacco had a neophytadiene content of 0.160% by mass. The leaf tobacco had a cembratrienediol (CBT) content of 0.158% by mass. The content of each component was measured by the method described above.

(3) Preparation of Tobacco Composition The tobacco sheet and the tobacco leaves were each cut into pieces with a width of 0.8 mm, and the two were mixed so that the mass ratio of the tobacco sheet to the tobacco leaves was tobacco sheet:tobacco leaf = 80:20, thereby preparing a tobacco composition.

(4) Production of Tobacco-Containing Segment The tobacco composition was wrapped in cigarette paper with the tobacco composition facing inward to produce a tobacco-containing segment. The packing density of the tobacco composition in the tobacco filler of the tobacco-containing segment was 0.34 g/ ^cm3 .

(5) Production of Non-Combustion Heating Type Flavor Inhaler Using the tobacco-containing segments, the non-combustion heating type flavor inhaler shown in FIG. 1 was produced.

[Examples 2 to 5, Comparative Examples 1 to 6]
Tobacco compositions were prepared in the same manner as in Example 1, except that the mass ratio of the tobacco sheet to the tobacco leaves was changed as shown in Table 1. Furthermore, tobacco-containing segments and non-combustion heating-type flavor inhalers were produced using the tobacco compositions in the same manner as in Example 1.

Table 1 shows the mass ratio of tobacco sheet to tobacco leaf, swelling capacity, aerosol-generating agent content, reducing sugar content, nicotine content, neophytadiene content, and CBT content of the tobacco compositions prepared in each Example and Comparative Example. The swelling capacity and the content of each component were measured using the methods described above.

[evaluation]
The non-combustion heating type flavor inhalers manufactured in each Example and Comparative Example were evaluated by 10 panelists. The evaluation was conducted as a comprehensive evaluation of all 15 puffs in four categories: "flavor intensity,""flavorpersistence,""textileodor," and "smoke volume and persistence." Each category was evaluated using a rating system ranging from 1 (weak flavor, poor flavor persistence, strong textile odor, low smoke volume and poor persistence) to 5 (strong flavor, high flavor persistence, weak textile odor, high smoke volume and high persistence). For each category, a rating of 3 or higher was considered good, and a rating of 2 or lower was considered poor. The results are shown in Table 2. Table 2 shows the average ratings of the 10 panelists. In addition, the 10 panelists were thoroughly trained using several types of samples of different concentrations, and it was confirmed that the ratings and evaluation thresholds for "degree of flavor,""persistence of flavor,""textileodor," and "volume and duration of smoke" were equal and standardized among the panelists.

As shown in Table 2, Examples 1 to 5 received a score of 3 or higher for all evaluation items, whereas Comparative Examples 1 to 6 received a score of 1 or 2 for some evaluation items. Therefore, it was found that the non-combustion heat-type flavor inhalation devices using the tobacco compositions of Examples 1 to 5 according to this embodiment were superior in all aspects of flavor intensity and persistence, fibrous odor, and smoke volume and persistence, compared to the non-combustion heat-type flavor inhalation devices using the tobacco compositions of Comparative Examples 1 to 5.

[Reference example]
For some of the above-mentioned Examples and Comparative Examples, principal component analysis was performed using "neophytadiene,""cembratrienediol(CBT)," and "reducing sugars" as variables. The results are shown in Table 3.

As shown in the principal component analysis results in Table 3, the factor loading of the first principal component was 62.67% of the total, and the factor loading of the second principal component was 91.51% of the total, explaining approximately 90% of the total. According to the principal component loadings, the first principal component is highly correlated with neophytadiene and cembratrienediol (CBT), while the second principal component is highly correlated with reducing sugars. Figure 5 also shows a scatter plot of the principal component scores. According to the scatter plot of the principal component scores shown in Figure 5, tobacco leaf is plotted in the first, second, and fourth quadrants, while tobacco sheet and tobacco compositions containing tobacco sheet and tobacco leaf are plotted in the third quadrant. This indicates that the tobacco content components are supplemented by blending tobacco leaf with the tobacco sheet. While this example approaches the first quadrant by blending tobacco leaf with the tobacco sheet, it is also possible to approach the second and fourth quadrants by changing the blend ratio of the tobacco leaf components. However, as mentioned above, tobacco sheets are better able to retain hydrophilic materials such as reducing sugars, as well as components that are difficult to retain in tobacco leaves, such as glycerin and propylene glycol. For this reason, by mixing tobacco leaves and tobacco sheets in a certain ratio, it is possible to provide the user with an aerosol with a sufficient flavor when in use.

[Examples 6 to 10]
Tobacco sheets and leaf tobacco were produced in the same manner as in Example 1. The tobacco sheets were shredded to widths of 0.5 mm, 1.0 mm, and 1.5 mm, respectively. The leaf tobacco was also shredded to widths of 0.8 mm. Tobacco compositions for each Example were prepared by mixing tobacco sheets having the shred widths shown in Table 4 with leaf tobacco in a tobacco sheet:leaf tobacco ratio of 60:40 (mass ratio). Non-combustion heating flavor inhalation devices were manufactured using the tobacco compositions in the same manner as in Example 1. The flavor levels of the non-combustion heating flavor inhalation devices of each Example were evaluated in the same manner as in Example 1. Fifteen puffs were performed, and the flavor levels were evaluated for each term, divided into three terms: puffs 1 to 5, puffs 6 to 10, and puffs 11 to 15. The results are shown in Table 4.

As shown in Table 4, by mixing tobacco sheets with different pitch widths, the timing of the puff at which the flavor is perceived can be changed due to differences in thermal conductivity. Further changes in flavor can be achieved by changing the pitch width or its combination depending on the heating temperature of the non-combustion heating flavor inhaler and the characteristics of the product. Furthermore, a comparison of Examples 6 to 8 with Examples 9 and 10 shows that a tobacco sheet pitch width of 1.0 mm or less can sufficiently suppress delay in the development of the tobacco sheet's inherent flavor.
The present invention includes the following embodiments.
[1] A tobacco composition comprising a tobacco sheet and tobacco leaves,
a mass ratio of the tobacco sheet to the tobacco leaves is tobacco sheet:tobacco leaves=40-80:20-60;
A tobacco composition, wherein the tobacco composition comprises an aerosol-generating agent.
[2] The tobacco composition according to [1], wherein the tobacco composition has a swelling capacity of 300 to 580 cm ³ /100 g.
[3] The tobacco composition according to [1] or [2], wherein the reducing sugar content of the tobacco sheet is 1.5 to 25.0% by mass.
[4] The tobacco composition according to any one of [1] to [3], wherein the reducing sugar content of the tobacco leaves is 0.5 to 25.0% by mass.
[5] The tobacco composition according to any one of [1] to [4], wherein the reducing sugar content of the tobacco composition is 0.8 to 25.0% by mass.
[6] The tobacco composition according to any one of [1] to [5], wherein the aerosol-generating agent content of the tobacco sheet is 5.0 to 20.0% by mass.
[7] The tobacco composition according to any one of [1] to [6], wherein the content of the aerosol-generating agent in the tobacco leaf is 2.0 to 15.0% by mass.
[8] The tobacco composition according to any one of [1] to [7], wherein the nicotine content of the tobacco sheet is 0.5 to 5.0% by mass.
[9] The tobacco composition according to any one of [1] to [8], wherein the nicotine content of the tobacco leaves is 0.5 to 5.0% by mass.
[10] The tobacco composition according to any one of [1] to [9], wherein the nicotine content of the tobacco composition is 0.5 to 5.0% by mass.
[11] The tobacco composition according to any one of [1] to [10], wherein the neophytadiene content of the tobacco leaf is 0.05% by mass or more.
[12] The tobacco composition according to any one of [1] to [11], wherein the neophytadiene content of the tobacco sheet is 0.01 to 0.10% by mass.
[13] The tobacco composition according to any one of [1] to [12], wherein the neophytadiene content of the tobacco composition is 0.01% by mass or more.
[14] The tobacco composition according to any one of [1] to [13], wherein the cembratrienediol (CBT) content of the tobacco leaves is 0.01% by mass or more.
[15] The tobacco composition according to any one of [1] to [14], wherein the cembratrienediol (CBT) content of the tobacco sheet is 0.01 to 0.10% by mass.
[16] A tobacco composition according to any one of [1] to [15], wherein the cembratrienediol (CBT) content of the tobacco composition is 0.01% by mass or more.
[17] The tobacco composition according to any one of [1] to [16], wherein the density of the tobacco sheet is 0.40 to 0.60 g/cm ³ .
[18] The tobacco composition according to any one of [1] to [17], wherein the tobacco sheet comprises two or more types of tobacco sheets having different densities.
[19] The tobacco composition described in [18], wherein the tobacco sheet comprises a first tobacco sheet having a density of less than 0.55 g/cm ³ and a second tobacco sheet having a density of 0.55 g/cm ³ or more.
[20] The tobacco composition according to [19], wherein the mass ratio of the first tobacco sheet to the second tobacco sheet contained in the tobacco sheet is first tobacco sheet:second tobacco sheet = 50-80:20-50.
[21] The tobacco sheet includes a paper-processed tobacco sheet and a slurry tobacco sheet,
The tobacco composition according to any one of [1] to [17], wherein the mass ratio of the paper-processed tobacco sheet to the slurry tobacco sheet is paper-processed tobacco sheet:slurry tobacco sheet=50-80:20-50.
[22] The tobacco composition according to any one of [19] to [21], wherein the aerosol-generating agent content of the second tobacco sheet or the slurry tobacco sheet is 20.0% by mass or less.
[23] The tobacco composition according to any one of [1] to [22], comprising two or more types of the tobacco sheets having different cut widths within a range of 0.3 to 2.0 mm, and/or two or more types of the leaf tobacco having different cut widths within a range of 0.3 to 2.0 mm.
[24] The tobacco composition according to any one of [1] to [23], wherein the cut width of the tobacco sheet is within the range of 0.3 to 1.0 mm.
[25] The tobacco composition according to any one of [1] to [24], which is a tobacco composition for use in a non-combustion heating type flavor inhaler.
[26] The tobacco composition according to any one of [1] to [25], wherein the mass ratio of the tobacco sheet to the leaf tobacco is tobacco sheet: leaf tobacco = (40 or more but less than 70): (more than 30 but not more than 60).
[27] A tobacco-containing segment comprising a tubular wrapper and a tobacco filler in which the tobacco composition according to any one of [1] to [26] is filled within the wrapper.
[28] The tobacco-containing segment according to [27], wherein the filling density of the tobacco composition in the tobacco filler is 0.25 to 0.45 g/cm ³ .
[29] A non-combustion heating type flavor inhaler comprising the tobacco-containing segment according to [27] or [28].
[30] A non-combustion heating type flavor inhaler according to [29],
a heating device for heating the tobacco-containing segment;
A non-combustion heating type flavor inhalation system.

REFERENCE SIGNS LIST 1 Non-combustion heating type flavor inhalation device 2 Tobacco-containing segment 3 Cooling segment 4 Center hole segment 5 Filter segment 6 Mouthpiece segment 7 Cylindrical member 8 Perforation 9 Second filling layer 10 Second inner plug wrapper 11 Outer plug wrapper 12 Mouthpiece lining paper 13 Heating device 14 Body 15 Heater 16 Metal tube 17 Battery unit 18 Control unit 19 Recess

Claims (29)

A tobacco composition comprising a tobacco sheet and tobacco leaves,
a mass ratio of the tobacco sheet to the tobacco leaves is tobacco sheet:tobacco leaves=40-80:20-60;
the tobacco composition comprises an aerosol-generating agent;
the tobacco composition has a swelling capacity of 300 to 400 cm ³ /100 g ;
A tobacco composition for use in a non-combustion heating flavor inhalation device . The tobacco composition according to claim 1, wherein the tobacco sheet has a reducing sugar content of 1.5 to 25.0% by mass. The tobacco composition according to claim 1 or 2, wherein the reducing sugar content of the tobacco leaves is 0.5 to 25.0% by mass. The tobacco composition according to any one of claims 1 to 3, wherein the reducing sugar content of the tobacco composition is 0.8 to 25.0% by mass. The tobacco composition according to any one of claims 1 to 4, wherein the tobacco sheet contains 5.0 to 20.0% by mass of an aerosol-generating agent. The tobacco composition according to any one of claims 1 to 5, wherein the aerosol-generating agent content of the tobacco leaf is 2.0 to 15.0% by mass. The tobacco composition according to any one of claims 1 to 6, wherein the nicotine content of the tobacco sheet is 0.5 to 5.0% by mass. The tobacco composition according to any one of claims 1 to 7, wherein the nicotine content of the tobacco leaves is 0.5 to 5.0% by mass. The tobacco composition according to any one of claims 1 to 8, wherein the nicotine content of the tobacco composition is 0.5 to 5.0% by mass. The tobacco composition according to any one of claims 1 to 9, wherein the neophytadiene content of the tobacco leaf is 0.05% by mass or more. The tobacco composition according to any one of claims 1 to 10, wherein the neophytadiene content of the tobacco sheet is 0.01 to 0.10% by mass. The tobacco composition according to any one of claims 1 to 11, wherein the neophytadiene content of the tobacco composition is 0.01% by mass or more. The tobacco composition according to any one of claims 1 to 12, wherein the cembratrienediol (CBT) content of the tobacco leaf is 0.01% by mass or more. The tobacco composition according to any one of claims 1 to 13, wherein the cembratrienediol (CBT) content of the tobacco sheet is 0.01 to 0.10% by mass. The tobacco composition according to any one of claims 1 to 14, wherein the cembratrienediol (CBT) content of the tobacco composition is 0.01% by mass or more. The tobacco composition according to any one of claims 1 to 15, wherein the density of the tobacco sheet is 0.40 to 0.60 g/ ^cm3 . The tobacco composition according to any one of claims 1 to 16, wherein the tobacco sheet comprises two or more types of tobacco sheets with different densities. 18. The tobacco composition of claim 17, wherein the tobacco sheet comprises a first tobacco sheet having a density of less than 0.55 g/ ^cm3 and a second tobacco sheet having a density of 0.55 g/cm3 or ^greater . The tobacco composition according to claim 18, wherein the mass ratio of the first tobacco sheet to the second tobacco sheet contained in the tobacco sheet is first tobacco sheet:second tobacco sheet = 50-80:20-50. The tobacco sheet includes a paper-processed tobacco sheet and a slurry tobacco sheet,
The tobacco composition according to any one of claims 1 to 16, wherein the mass ratio of the paper-processed tobacco sheet to the slurry tobacco sheet is paper-processed tobacco sheet:slurry tobacco sheet=50-80:20-50. The tobacco composition according to claim 18 or 19, wherein the aerosol-generating agent content of the second tobacco sheet is 20.0% by mass or less. The tobacco composition according to claim 20, wherein the aerosol-generating agent content of the slurry tobacco sheet is 20.0% by mass or less. The tobacco composition according to any one of claims 1 to 22, comprising two or more types of tobacco sheets having different cut widths within a range of 0.3 to 2.0 mm, and/or two or more types of tobacco leaves having different cut widths within a range of 0.3 to 2.0 mm. The tobacco composition according to any one of claims 1 to 23, wherein the cut width of the tobacco sheet is within the range of 0.3 to 1.0 mm. The tobacco composition according to any one of claims 1 to 24 , wherein the mass ratio of the tobacco sheet to the leaf tobacco is tobacco sheet:leaf tobacco = (40 or more but less than 70):(more than 30 but not more than 60). A tobacco-containing segment comprising a tubular wrapper and a tobacco filler in which the tobacco composition according to any one of claims 1 to 25 is filled within the wrapper. 27. The tobacco-containing segment according to claim 26 , wherein the tobacco composition in the tobacco filler has a packing density of 0.25 to 0.45 g/cm ³ . A non-combustion heating type flavor inhaler comprising the tobacco-containing segment according to claim 26 or 27 . The non-combustion heating type flavor inhaler according to claim 28 ,
a heating device for heating the tobacco-containing segment;
A non-combustion heating type flavor inhalation system.