JP2024109950A - Tobacco composition, tobacco-containing segment, non-combustion heating-type flavor inhaler, and non-combustion heating-type flavor inhalation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low-cost tobacco composition which ensures a sufficient amount of smoke, allows reduction in fiber odor, and enhances the degree and sustainability of flavor.

SOLUTION: A tobacco composition contains a tobacco sheet and leaf tobacco, wherein the mass ratio of the tobacco sheet to the leaf tobacco is 40-80/20-60 (tobacco sheet/leaf tobacco), and the tobacco composition contains an aerosol generating agent.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

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 a combustion-type flavor inhalation device (cigarette), a tobacco-containing segment having a tobacco filler containing tobacco leaves is burned to obtain flavor. As an alternative to the combustion-type flavor inhalation device, a non-combustion heating-type flavor inhalation device has been proposed, which heats the tobacco-containing segment instead of burning it to obtain flavor. The heating temperature of the non-combustion heating-type flavor inhalation device is lower than the combustion temperature of the combustion-type flavor inhalation device, for example, about 400°C or lower. Since the heating temperature of the non-combustion heating-type flavor inhalation device is thus low, in order to increase the amount of smoke, an aerosol generating agent such as glycerin is added to the tobacco filler in the non-combustion heating-type flavor inhalation device. The aerosol generating agent is vaporized by heating to generate an aerosol. The aerosol is supplied to the user together with tobacco components, so that the user can obtain a sufficient flavor.

In the tobacco-containing segment of non-combustion heating flavor inhalation devices, in order to ensure that the tobacco filler contains a sufficient amount of aerosol generating agent, a tobacco filler filled with a tobacco sheet instead of tobacco leaves is usually used (e.g., Patent Document 1). A tobacco sheet is obtained by forming a tobacco-containing composition into a sheet shape, and contains fibers such as pulp as a filler for forming. The fibers can absorb the aerosol generating agent, so the tobacco sheet 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 table 2014-515274 publication 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, and can ensure a sufficient amount of smoke when using a non-combustion heating type flavor inhalation device. However, because tobacco sheets contain fibers such as pulp, a fiber odor may be felt during use. In addition, tobacco sheets contain materials other than tobacco, such as fibers, and because tobacco sheets lose some of their tobacco components during production, they have a weaker flavor when used compared to leaf tobacco, and the flavor does not last as long. Furthermore, tobacco sheets are more expensive to manufacture than leaf tobacco due to the partial loss of tobacco components during production. On the other hand, leaf tobacco has a strong flavor when used, has no fiber odor, and is low cost, but can contain only a small amount of aerosol generating agent, making it difficult to 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 level and persistence of flavor while ensuring a sufficient amount of smoke, a tobacco-containing segment that includes 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 according to the present invention is a tobacco composition having a tubular wrapper and a tobacco filling article in which the tobacco composition according to the present invention is filled within the wrapper.

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

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

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

FIG. 1 is a cross-sectional view showing an example of a non-combustion heating type flavor inhalation device according to an embodiment of the present invention. FIG. 1 is a cross-sectional view showing an example of a non-combustion heating type flavor inhalation system according to the present embodiment, in which (a) a state before a non-combustion heating type flavor inhalation instrument is inserted into a heating device, and (b) a state in which the non-combustion heating type flavor inhalation instrument is inserted into the 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 a heating chamber of an electrically heated device according to the present embodiment. FIG. FIG. 4 is a cross-sectional view taken along line BB (BB cross-section) of the hollow tube heater shown in FIG. 3. FIG. 13 is a scatter plot of principal component scores in a reference example.

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

The inventors have found that, in a tobacco composition containing an aerosol generating agent, by blending tobacco sheet and leaf tobacco in such a way that the mass ratio of the two is tobacco sheet:leaf tobacco = 40-80:20-60, it is possible to reduce the fiber odor while ensuring a sufficient amount of smoke, and improve the level and duration of the flavor. By making the mass ratio of the tobacco sheet 40% by mass or more (the mass ratio of the leaf tobacco is 60% by mass or less), the tobacco composition can contain a sufficient amount of the aerosol generating agent, and a sufficient amount of smoke can be ensured during use. In addition, by ensuring a sufficient amount of smoke, the tobacco components are sufficiently supplied to the user by the aerosol, improving the level and duration of the flavor. On the other hand, by making the mass ratio of the tobacco sheet 80% by mass or less (the mass ratio of the leaf tobacco is 20% by mass or more), it is possible to reduce the fiber odor derived from the fibers such as pulp contained in the tobacco sheet. In addition, since the mass ratio of the leaf tobacco increases, the content of the tobacco components increases, and the level and duration of the flavor are improved. Furthermore, in this embodiment, because tobacco leaves are blended into the tobacco sheet, there is less loss of tobacco components during production compared to a tobacco composition made only of a tobacco sheet, and production costs can be reduced. The tobacco composition according to this embodiment is particularly useful as a tobacco composition for non-combustion heating-type flavor inhalation devices.

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

(Bulkiness)
The tobacco composition according to the present embodiment preferably has a bulk expansion of 300 to 580 cm ³ /100g. Since the tobacco sheet has a lower bulk expansion than the leaf tobacco, a tobacco composition consisting of only the tobacco sheet needs to be filled with a larger amount of tobacco composition to obtain a predetermined rolling hardness in the tobacco-containing segment. However, the tobacco composition according to the present embodiment is blended with leaf tobacco having a high bulk expansion, and therefore has a higher bulk expansion than a tobacco composition consisting of only the tobacco sheet, and the amount of tobacco composition filled during the production of the tobacco-containing segment can be reduced. Therefore, the production cost of the tobacco-containing segment can be reduced. By having the tobacco composition have a bulk expansion of 300 cm ³ /100g or more, the amount of tobacco composition filled during the production of the tobacco-containing segment can be sufficiently reduced, and the production cost can be further reduced. The tobacco composition preferably has a bulk expansion of 300 to 500 cm ³ /100g, more preferably 300 to 400 cm ³ /100g, and particularly preferably 330 to 380 cm ³ /100g.

The swelling property 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 property. The swelling property is a value calculated from the height of a cylinder of a sample that is measured after a load of 11.4 kg is applied for 5 seconds to a measuring cylinder having a diameter of 95 mm into which the sample is placed. In other words, the swelling property represents the volume per unit weight when a lump of the sample is compressed with a certain 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 the present embodiment may contain reducing sugar. Reducing sugar is a type of tobacco component, and is 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 the present 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. When the reducing sugar content of the tobacco sheet is less than 1.5% by mass, aerosol that causes physiological discomfort in the oral cavity may be generated. Furthermore, when the reducing sugar content exceeds 25.0% by mass, the aerosol may be acidified.

In the tobacco composition according to this embodiment, the reducing sugar content of the tobacco leaves 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 leaves 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, an aerosol that causes physiological discomfort in the oral cavity may be generated. If the reducing sugar content exceeds 25.0% by mass, the aerosol may become acidic. The reducing sugar content of the tobacco sheet, leaf tobacco, and tobacco composition can be measured by a method of extracting reducing sugars by powdering a sample and analyzing them by high performance liquid chromatography or by using an NIR measurement method. The reducing sugar content of each can be controlled within the above range by blending, for example, Virginia, which has a high reducing sugar content, with Virginia and Burley, which have a low reducing sugar content.

(Aerosol generating agent and its content)
The tobacco composition according to the present embodiment includes an aerosol generating agent. The aerosol generating agent vaporizes when heated to generate an aerosol, and therefore the amount of smoke produced during use can be increased. The aerosol generating agent contained in the tobacco composition according to the present embodiment is not particularly limited as long as it vaporizes when heated to generate an aerosol, and various extracts from natural products and/or their constituents can be selected. Specific examples of the aerosol generating agent 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, and may be contained in, for example, 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 having the aerosol generating agent content of the tobacco sheet be 5.0% by mass or more, a sufficient 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 having the aerosol generating agent content in the tobacco leaf be 2.0% by mass or more, sufficient 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. When 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 the present embodiment may contain nicotine. Nicotine is a type of tobacco component, and contributes to a good flavor. In the tobacco composition according to the present 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%, an unpleasant feeling may be caused when the aerosol is inhaled. In addition, if the nicotine content of the tobacco sheet is less than 0.5 mass%, a sufficient smoking sensation may not be felt when the aerosol is inhaled.

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 discomfort when inhaled. 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 cause discomfort when inhaled. If the nicotine content of the tobacco composition is less than 0.5% by mass, the aerosol may not feel sufficiently satisfying when inhaled. The nicotine content of the tobacco sheet, leaf tobacco, and tobacco composition is a value measured by the following method. The nicotine content of each can be controlled within the above range, for example, by blending tobacco sheets and leaf tobacco having different nicotine contents.

(Method of measuring nicotine content)
2.0 g of sample is put into a rotary shelf 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 sample is shaken for 60 minutes to perform an extraction operation. After extraction, the supernatant (hexane phase) is subjected to a gas chromatograph (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 the nicotine component contained in the sample on an absolute dry mass basis is calculated by 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 type of 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 mass%, more preferably 0.01 to 0.07 mass%, and even more preferably 0.01 to 0.05 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. The respective neophytadiene contents can be controlled within the above ranges, for example, by blending tobacco sheets and leaf tobaccos with different neophytadiene contents.

(Method of 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 with dichloromethane (approximately 150 ml) in a water bath for 20 hours.
(2) Concentrate the dichloromethane extract under reduced pressure at 40°C, place in a 50 ml measuring flask, and make up to 50 ml with dichloromethane.
(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 in a Erlenmeyer 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 the present embodiment may contain cembratrienediol (CBT), which is a tobacco component. Cembratrienediol (CBT) is a type of volatile tobacco component, and contributes to a good flavor. In the tobacco composition according to the present 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 cembratrienediol (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 cembratrienediol (CBT) content of the tobacco sheet, the leaf tobacco, and the tobacco composition is a value measured by the following method. 5 g of a sample is weighed into a 100 ml screw tube, 50 ml of ethyl acetate is added, mixed well, and then left to stand at room temperature for a day and night. The mixed liquid is filtered using filter paper, and a small amount of anhydrous sodium sulfate is added to the filtrate (extract) to dehydrate it, and then the mixture is filtered again using filter paper, and the ethyl acetate in the dehydrated liquid is removed under reduced pressure. Ethyl acetate is added to the obtained dried solid to dissolve it, and the 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 and properties of tobacco sheets)
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 degree and duration of flavor can be further improved. 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 in the initial period 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 a sheet of tobacco (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. A low-density tobacco sheet is easily warmed by heating, and can contribute to promoting the vaporization of tobacco components in the early stages of use. On the other hand, a high-density tobacco sheet contains a large amount of tobacco components per volume, and can contribute to improving the level and persistence of flavor.

For example, the tobacco sheet according to the present 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. The first tobacco sheet having a low density has a density of less than 0.55 g/cm ³ , so that the sheet is easily heated by heating, and the vaporization of the tobacco components at the initial stage of use is more promoted. The second tobacco sheet having a high density has a density of 0.55 g/cm ³ or more, so that the content of the tobacco components per volume is increased, and the degree and persistence of the flavor are further improved. The density of the first tobacco sheet is more preferably 0.40 g/cm ³ or more and less than 0.55 g/cm ³ , and even 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 the present embodiment may be composed of the first tobacco sheet and the second tobacco sheet.

The mass ratio of the first tobacco sheet and 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% by mass or more (the mass ratio of the second tobacco sheet be 50% by mass or less), the sheet is easily heated by heating, and the vaporization of the tobacco components at the initial stage of use is further promoted. In addition, by having the mass ratio of the first tobacco sheet be 80% by mass or less (the mass ratio of the second tobacco sheet be 20% by mass or more), the mass ratio of the high-density second tobacco sheet is increased, the content of the tobacco components per volume is increased, and the degree and persistence of the flavor are further improved. The mass ratio of the first tobacco sheet and 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-formed tobacco sheet and a slurry tobacco sheet, which will be described later. In this case, the paper-formed 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-formed tobacco sheet and a slurry tobacco sheet, the mass ratio of the paper-formed tobacco sheet to the slurry tobacco sheet is preferably paper-formed 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 having the aerosol generating agent content of 20.0% by mass or less, the second tobacco sheet or the slurry tobacco sheet can be easily heated by heating, and the tobacco components can 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 content of the aerosol generating agent in the first tobacco sheet or the paper-formed 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.

(Composition of tobacco leaves)
<Definition>
In this specification, "leaf tobacco" includes harvested tobacco leaves, harvested tobacco leaves that have been deboned and separated to leave lamina and backbone, etc., aged leaf tobacco that has been aged (including curing), and tobacco shreds that have been aged leaf tobacco, etc., chopped into a specified size.

<Tobacco varieties>
Various tobacco varieties can be used. Examples include flue-cured, burley, orient, native, other Nicotiana tabacum varieties, and Nicotiana rustica varieties. These varieties can be used alone, but can also be blended in the process from the harvesting of tobacco leaves to the shredding of aged tobacco leaves to obtain a 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, tobacco variety blending can be carried out in the process from the harvesting of tobacco leaves to the processing of aged 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 tobacco leaves or different shredded tobacco is also referred to as a "blend." Blending tobacco of the same variety but with different grades is also specifically referred to as a "cross blend."

Within each tobacco variety, the leaves are graded based on 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, and different tobacco varieties will have different chemical properties. Different grades of the same tobacco variety may also have different chemical properties. Thus, blending and cross-blending are performed to obtain tobacco raw materials with desired characteristics and chemical properties.

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

<Curing>
Tobacco leaves are generally subjected to a process called curing at an early stage after harvesting. Curing is one of the processes for aging tobacco leaves, and usually includes processes such as drying and humidity adjustment, and also includes activating the activity of various enzymes contained in tobacco leaves. The cured tobacco leaves are packed in cases and stored in a warehouse for a certain period of time, and then transported to a raw material factory. In order to obtain tobacco leaves that have a low content of benzo[a]pyrene and low molecular weight carboxylic acids and a high content of specific flavor components, the harvested tobacco leaves may be subjected to a process described in International Publication No. 2018/139068 instead of the above-mentioned curing.

<Processing and maturation at raw material factories>
The cured leaf tobacco transported to the raw material factory 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 process of long-term storage in a warehouse is sometimes called 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 that is an 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 called aging after deboning. On the other hand, packing tobacco leaves transported to a raw material factory into cases and aging them without deboning or separating them, and then deboning and separating them after aging is sometimes called deboning after aging.

<Flavoring agents>
A flavoring may be added to the tobacco leaves. The type of flavoring is not particularly limited, and may be, for example, a flavoring or a taste-imparting agent from the viewpoint of imparting a good flavor. In addition, coloring agents, humectants, and preservatives may be optionally included. The flavoring and optional materials may be in any form, such as liquid or solid. In addition, they may be a single component or a combination of multiple components.

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

The fragrance may be, for example, a fragrance selected from isothiocyanates, indoles and their 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., used alone or in combination. It may also be a material that provides a cooling/warming sensation.

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, balsam of Peru oil, beeswax absolute, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil, carob absolute, β-carotene, carrot juice, L-carvone, β-caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, cinnamyl alcohol, cinnamyl cinnamate, citronella oil, DL-citronella ethanol, clary sage extract, coffee, konjac oil, coriander oil, cumin aldehyde, davana oil, delta-decalactone, gamma-decalactone, decanoic acid, dill herb oil, 3,4-dimethyl-1,2-cyclopentanedione, 4,5-dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 3,7-dimethyl-6-octenoic acid, 2,3-dimethylpyrazine, 2,5-dimethylpyrazine, 2,6-dimethylpyrazine, ethyl 2-methylbutyrate, ethyl acetate, ethyl butyrate, ethyl hexanoate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl octanoate, ethyl oleate, ethyl palmitate, ethyl phenylacetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin, ethyl vanillin glucoside, 2-Ethyl-3,(5 or 6)-dimethylpyrazine, 5-ethyl-3-hydroxy-4-methyl-2(5H)-furanone, 2-ethyl-3-methylpyrazine, eucalyptol, fenugreek absolute, gene absolute, gentian root infusion, geraniol, geranyl acetate, grape juice, guaiacol, guava extract, gamma-heptalactone, gamma-hexalactone, hexanoic acid, cis-3-hexen-1-ol, hexyl acetate, hexyl alcohol, phenylhexyl acetate, honey, 4-hydroxy-3-pentenoic acid lactone, 4-hydroxy-4-(3-hydroxy-1-butenyl)-3,5,5-trimethyl-2-cyclohexen-1-one, 4-(para-hydroxyphenyl)-2-butanone, sodium 4-hydroxyundecanoate, immortalte Absolute, β-Ionone, Isoamyl acetate, Isoamyl butyrate, Isoamyl phenylacetate, Isobutyl acetate, Isobutyl phenylacetate, Jasmine absolute, Cola nut tincture, Labdanum oil, Lemon terpeneless oil, Licorice extract, Linalool, Linalyl acetate, Lovage root oil, Maple syrup, Menthol, Menthone, L-Menthyl acetate, Paramethoxybenzaldehyde, Methyl 2-pyrrolyl ketone, Methyl anthranilate, Methyl phenylacetate, Methyl salicylate, 4'-Methylacetophenone, Methylcyclopentenolone, 3-Methylvaleric acid, Mimosa absolute, Honey beet, Myristic acid, Nerol, Nerolidol, γ-Nonalactone, Nutmeg oil, δ-Octalactone, Octanal, Octanoic acid, Orange flower oil, Orange oil, Oligosaccharides Root oil, palmitic acid, ω-pentadecalactone, peppermint oil, petitgrain Paraguay oil, phenethyl alcohol, phenethyl phenylacetate, phenylacetic acid, piperonal, plum extract, propenyl guaethol, 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, 10-undecenoic acid ethyl, hexanoic acid isoamyl, 1-phenylethyl acetate, lauric acid, 8-mercaptomenthone, sinensal, butyric acid hexyl, plant powder (herb powder, flower powder, spice powder, tea powder: 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 the flavoring agent include materials that exhibit sweetness, sourness, saltiness, umami, bitterness, astringency, and richness. Examples of materials that exhibit 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 exhibit 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 exhibit bitterness include caffeine (extract), naringin, and wormwood extract. Examples of materials that exhibit saltiness include sodium chloride, potassium chloride, sodium citrate, potassium citrate, sodium acetate, and potassium acetate. Examples of ingredients that provide umami include sodium glutamate, sodium inosinate, and sodium guanylate. Examples of ingredients that provide astringency include tannin and shibuol.

Examples of the coloring agent include natural dyes and synthetic dyes. Examples of natural dyes include caramel, turmeric, red knotweed, gardenia, safflower, carotene, marigold, and annatto. Examples of synthetic dyes include tar dyes and titanium oxide.

Examples of such humectants include lipids (waxes, waxes, glycerin, medium-chain triglycerides, fatty acids (short-chain, medium-chain, 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 tobacco leaves, the content of flavoring in the tobacco leaves is not particularly limited, but from the viewpoint of imparting a good flavor, for example, it is 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 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 of preparing shredded tobacco leaves>
There is no particular limit to the size or preparation method of the leaf tobacco shreds. As an example, aged leaf tobacco 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 can be mentioned. When considered as a flavor generating source, various shred widths can be set by considering thermal conductivity, etc. Leaf tobacco shreds of such a size are preferable for filling a wrapper, which will be described later. In addition, it is preferable to use two or more types of leaf tobacco with different shred widths within the range of 0.3 to 2.0 mm, from the viewpoint of being able to widely change the timing of the puff at which the degree of flavor is felt. 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 has a larger shred width than the first leaf tobacco) can be used. When the shred width is made smaller, the surface area per unit mass is increased, and the thermal conduction efficiency is increased. The increased thermal conduction efficiency makes it possible to heat the tobacco filling in a short time. On the other hand, by increasing the pitch, the surface area per unit mass is reduced and the efficiency of thermal conduction is reduced, making it possible to heat the tobacco filler over a long period of time.

(Structure 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 may be, for example, tobacco that has been deboned and separated into lamina and midrib. 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 of forming tobacco sheet>
Tobacco sheets can be formed by known methods such as papermaking, casting, rolling, etc. Details of various tobacco sheets formed by such methods are disclosed in "Encyclopedia of Tobacco, Tobacco Research Center, March 31, 2009". In this specification, tobacco sheets formed by the papermaking method are called "papermaking tobacco sheets", and tobacco sheets formed by the casting method (slurry method) are called "slurry tobacco sheets". Both tobacco sheets are difficult to retain lipophilic components due to their unique composition. On the other hand, as tobacco sheets, they have the property of being able to retain hydrophilic vapor sources such as glycerin, propylene glycol, reducing sugars, and amino acids, as well as precursors of heated aroma. The above-mentioned papermaking tobacco sheets, slurry tobacco sheets, and rolled tobacco sheets are outlined below.

<Tobacco sheet molding method (papermaking method)>
An example of a method for forming a tobacco sheet by a papermaking method includes the following steps.
(1) A process for extracting water-soluble components from aged tobacco leaves by crushing 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 in which pulp is added to the residue and the mixture is fiberized in a refiner to obtain a mixture (homogenization process).
(5) A step of making paper from the mixture of fiberized residue and pulp.
(6) A process 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-2004-510422).

<Tobacco sheet molding method (casting method)>
An example of a method for forming a tobacco sheet by a 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) The mixture is spread (cast) into a thin sheet and dried to form a tobacco sheet.
When forming a tobacco sheet by 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 feeding the mixture between a plurality of rollers and rolling it.
(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 by this method, the surface of each roller may be heated or cooled, and the rotation speed of each roller may be adjusted, depending on the purpose. In addition, by adjusting the distance between each roller, a tobacco sheet of 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 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 appropriately adjusted according to the manner in which the tobacco sheet is filled into a wrapper, which will be described later and will be mixed well 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 for example, the tobacco sheet may contain 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 with respect to the total mass of the tobacco sheet. Examples of binders include guar gum, xanthan gum, CMC (carboxymethylcellulose), CMC-Na (sodium salt of carboxymethylcellulose), and the like. The content of the binder is preferably 1% by mass or more and 10% by mass or less with respect 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 with respect to the total mass of the tobacco sheet. Examples of flavorings include the flavorings described above. When a flavoring is contained in the tobacco sheet, the content of the flavoring is not particularly limited, but from the viewpoint of imparting a good flavor, for example, it is usually 10 ppm or more, preferably 10,000 ppm or more, more preferably 50,000 ppm or more, and it is usually 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.

<Tobacco shredding on tobacco sheets>
The tobacco sheet may be tobacco shreds of a tobacco sheet (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. As an example, 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 can be mentioned. Tobacco sheet shreds of such a size are preferable for filling a wrapper, which will be described later. In addition, it is preferable that the cut width of the tobacco sheet is 0.3 to 1.0 mm from the viewpoint of suppressing the 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 cut widths by taking into consideration the thermal conductivity, etc. In addition, it is preferable to use two or more types of tobacco sheets with different cut widths within the range of 0.3 to 2.0 mm from the viewpoint of widely changing the timing of the puff at which the degree of flavor is felt. 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 is large and the thermal conduction efficiency is high. 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 is small and the thermal conduction efficiency is low, making it possible to heat the tobacco filler over a long period of time.

(Other additives)
The tobacco composition according to the present embodiment may contain other additives in addition to the tobacco sheet and the tobacco leaves. Examples of other additives include a flavor-supported polysaccharide sheet as a solid additive carrying a flavor. The addition of a flavor-supported polysaccharide sheet has the advantage of increasing the amount of flavor components when using a non-combustion heating flavor inhalation article. The flavor-supported polysaccharide sheet is disclosed in, for example, Japanese Patent No. 5941988, Japanese Patent No. 5934799, Japanese Patent No. 5514953, Japanese Patent No. 5481574, etc. These other additives may contain one type, or may contain two or more types. However, the total mass ratio of the tobacco sheet and the tobacco leaves 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. The tobacco composition may be free of the other additives and may consist of the tobacco sheet and the tobacco leaves.

(Moisture content of tobacco composition)
The moisture content of the tobacco composition according to the present embodiment is, for example, 10% by mass or more and 15% by mass or less, and preferably 11% by mass or more and 13% by mass or less, based on the total mass of the tobacco composition. Such a moisture content can suppress the occurrence of rolling stains after the tobacco composition is filled into a wrapper.

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

[Tobacco-containing segment]
The tobacco-containing segment according to the present embodiment includes a cylindrical wrapper and a tobacco filler in which the tobacco composition according to the present embodiment is filled in the wrapper. Since the tobacco-containing segment according to the present embodiment includes the tobacco composition according to the present embodiment, the tobacco-containing segment according to the present embodiment can ensure a sufficient amount of smoke during use, while reducing the fiber odor and improving the level and duration of the flavor. In addition, the tobacco-containing segment can be manufactured at low cost.

The tobacco filling refers to a tobacco composition according to this embodiment filled in a predetermined manner inside a cylindrical wrapper. Examples of wrappers include, but are not limited to, cigarette paper shaped into a cylindrical shape. The tobacco-containing segment is formed, for example, by wrapping a wrapper such as cigarette paper so that the tobacco composition is on the inside.

The tobacco-containing segment preferably has a columnar shape. In this case, the aspect ratio represented by the height of the tobacco-containing segment in the long axis direction relative to the width of the base of the tobacco-containing segment is preferably 1 or more, but is not limited thereto. The shape of the base is not limited, and may be polygonal, rounded polygonal, circular, elliptical, etc., and the width is the diameter when the base is circular, the major axis when the base is elliptical, and the diameter of the circumscribed circle or the major axis of the circumscribed ellipse when the base is polygonal or rounded polygonal. For example, when the base is a circle, the diameter can be identified, and the 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. In addition, the tobacco filler in the tobacco-containing segment may have a fitting portion with a heater that heats the tobacco filler.

The filling density of the tobacco composition in the tobacco filling material is preferably 0.25 to 0.45 g/ ^cm3 . By having the filling density of 0.25 g/ ^cm3 or more, sufficient winding hardness can be ensured. Furthermore, by having the filling density of 0.45 g/cm3 or ^less , the filling amount of the tobacco composition can be reduced, thereby reducing production costs. The filling 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 inhalation device]
The non-combustion heating type flavor inhalation device according to the present embodiment includes the tobacco-containing segment according to the present embodiment. Since the non-combustion heating type flavor inhalation device according to the present embodiment includes the tobacco-containing segment according to the present embodiment, it is possible to reduce the fiber odor while ensuring a sufficient amount of smoke during use, and to improve the level and duration of the flavor. In addition, the non-combustion heating type flavor inhalation device can be manufactured at low cost.

An example of a non-combustion heating type flavor inhalation device according to this embodiment is shown in FIG. 1. The non-combustion heating type flavor inhalation device 1 shown in FIG. 1 includes 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 heating type flavor inhalation device according to this embodiment may include other segments in addition to the tobacco-containing segment, the cooling segment, the center hole segment, and the filter segment.

The axial length of the non-combustion heating type flavor inhalation device according to the present embodiment is not particularly limited, but is preferably 40 mm or more and 90 mm or less, more preferably 50 mm or more and 75 mm or less, and even more preferably 50 mm or more and 60 mm or less. The circumferential length of the non-combustion heating type flavor inhalation device is preferably 16 mm or more and 25 mm or less, more preferably 20 mm or more and 24 mm or less, and even more preferably 21 mm or more and 23 mm or less. For example, the length of the tobacco-containing segment is 20 mm, the length of the cooling segment is 20 mm, the length of the center hole segment is 8 mm, and the length of the filter segment is 7 mm. The length of the filter segment can be selected within a range of 4 mm or more and 10 mm or less. The airflow resistance of the filter segment at that time is selected to be 15 mmH ₂ O/seg or more and 60 mmH ₂ O/seg or less per segment. These individual segment lengths can be appropriately changed according to manufacturing suitability, required quality, etc. 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 inhalation device.

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

(Cooling segment)
1, the cooling segment 3 may be formed of 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 may be 300 ^mm2 /mm or more and 1000 ^mm2 /mm or less. This surface area is the surface area per mm of the length (mm) of the cooling segment in the air flow direction. The total surface area of the cooling segment is preferably ⁴⁰⁰ mm2/mm or more, more preferably 450 ^mm2 /mm or more, while it is preferably ⁶⁰⁰ mm2/mm or less, more preferably 550 ^mm2 /mm or less.

It is desirable for the cooling segment to have a large total surface area due to its internal structure. Thus, in a preferred embodiment, the cooling segment may be formed by 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 made of a material with a specific surface area of 10 ^mm2 /mg or more and 100 ^mm2 /mg or less. In one embodiment, the specific surface area of the material of construction can be about 35 ^mm2 /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 and a variation of ±2 μm. If the material has a known width, again between, for example, 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, and as their temperature drops, they are liquefied to form 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 or 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 setting the ratio of the amount of outside air to 85% by volume or less, it is possible to sufficiently suppress the reduction in flavor due to dilution by outside air. This is also called the ventilation ratio. From the viewpoint 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.

The cooling segment preferably offers a small 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. The resistance to draw (RTD) is the pressure required to force air through the entire length of the object under a test of 17.5 ml/sec flow rate at 22°C and 101 kPa (760 Torr). RTD is typically expressed in _mmH2O and is measured according to ISO 6565:2011. Thus, the pressure drop from the upstream end of the cooling segment to the downstream end of the cooling segment is preferably small. To achieve this, the longitudinal porosity is preferably greater than 50% and the air flow 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 may drop by 15° C. or more, and in yet another embodiment, by 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 include 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, etc.

Preferably, the airflow through the cooling segments does not substantially deflect between adjacent segments. In other words, the airflow through the cooling segments preferably flows along the longitudinal segments without substantial radial deflection. In some embodiments, the cooling segments are formed from a material that has low porosity or is substantially free of pores, 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 free of pores.

As mentioned above, the cooling segment may comprise a sheet of suitable construction material that is crinkled, pleated, gathered, or folded. 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 with a paper wrapper. 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 wrapper.

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 cooling segment may have a diameter of about 7 mm.

(Center hole segment)
The center hole segment is composed of a filling layer having one or more hollow parts 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 part and a second inner plug wrapper 10 covering the second filling layer 9. The center hole segment 4 has a function of increasing the strength of the mouthpiece segment 6. The second filling layer 9 can be, for example, a rod with an inner diameter of φ5.0 mm or more and φ1.0 mm or less, which is filled with cellulose acetate fibers at a high density and hardened by adding a plasticizer containing triacetin at 6% by mass or more and 20% by mass or less relative to the mass of cellulose acetate. Since the second filling layer 9 has a high fiber filling density, air and aerosol flow only through the hollow part during inhalation, and hardly flow inside the second filling layer 9. Since the second filling layer 9 inside the center hole segment 4 is a fiber filling layer, the touch from the outside during use is less likely to cause discomfort to the user. It is also possible that the center hole segment 4 does not have the second inner plug wrapper 10 and its shape is 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 wrapping papers. The airflow resistance per filter segment can be appropriately changed depending on the amount and material of the packing filled in the filter segment. For example, when the packing 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 packing is cellulose acetate fiber, the packing density of the cellulose acetate fiber can be 0.13 to 0.18 g/cm ^3. The airflow resistance is a value measured by 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, and more preferably 6 to 8 mm. The cross-sectional shape of the filter segment is not particularly limited, but can be, for example, a circle, an ellipse, a polygon, or the like. In addition, a destructible capsule containing a flavor, flavor beads, or a flavor may be directly added to the filter segment.

As shown in FIG. 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 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 a vinyl acetate glue or other adhesive to the inner surface of the mouthpiece lining paper 12, inserting the three segments, and rolling them up. These segments may be connected in multiple separate instances using multiple lining papers.

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

An example of a non-combustion heating type flavor inhalation system according to this embodiment is shown in FIG. 2. The non-combustion heating type flavor inhalation system shown in FIG. 2 includes 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.

2(a) shows the state before the non-combustion heating type flavor inhalation tool 1 is inserted into the heating device 13, and FIG. 2(b) shows the state after the non-combustion heating type flavor inhalation tool 1 is inserted into the heating device 13 and heated. The heating device 13 shown in FIG. 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 the metal tube 16 are arranged 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 tool 1 inserted into the recess 19. The heater 15 can be an electric resistance heater, and is heated by being supplied with power from the battery unit 17 in response to an instruction from the control unit 18 that 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 tool 1 through the metal tube 16, which has high thermal conductivity.

2(b) is a schematic illustration, and therefore 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. However, in reality, in order to efficiently transfer heat, it is preferable that there is 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 by the heating device is not particularly limited, but is preferably 400°C or less, more preferably 150°C or more and 400°C or less, and even more preferably 200°C or more and 350°C or less. The heating temperature refers to the temperature of the heater of the heating device.

[Non-combustion heated tobacco products]
The non-combustion heated tobacco product according to the present embodiment includes an electric heating device and a non-combustion heated tobacco stick used with the electric heating device. The non-combustion heated tobacco stick includes a tobacco rod portion having a tobacco filler containing the tobacco composition according to the present embodiment and a cigarette paper wrapping the tobacco filler, a mouthpiece portion that is coaxially connected to the tobacco rod portion by wrapping the tobacco rod portion with tipping paper, and a vent hole provided in the mouthpiece portion. The electric heating device has a hollow tube heater that is specified to form a heating chamber inside 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 is specified so that 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, FIG. 3 shows a state in which a tobacco stick 100 is inserted to a specified position in the heating chamber 60 of the electrically heated device according to this embodiment. FIG. 4 shows a cross section at position B-B (B-B cross section) of the hollow tube heater 21 shown in FIG. 3. In FIG. 4, the external shape (outline) in the cross-sectional direction of the tobacco stick 100 in its original form 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 dimension of the tobacco rod portion 110. Therefore, when the tobacco stick 100 is inserted to a specified position in the heating chamber 60 in the hollow tube heater 21, the entire tobacco rod portion 110 and a part of the mouthpiece portion 120 are inserted into the compression tube portion 63. As a result, the entire tobacco rod portion 110 and a part 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 predetermined manner, the control unit starts the supply of power from the power source to the hollow tube heater 21, and heating control begins to heat the tobacco rod portion 110 in the tobacco stick 100. When the heating control begins, the heater element 23 installed in the heating wall portion RH of the compression tube portion 63 in the hollow tube heater 21 is energized, causing the heating wall portion RH to generate heat. This allows the tobacco filler 111 contained in the tobacco rod portion 110 of the tobacco stick 100 to be heated without being burned, and vapor containing an aerosol generating agent and tobacco flavor components to be generated.

The compression tube portion 63 of the hollow tube heater 21 according to this embodiment has its entire area in the axial direction formed as the heating wall portion RH. Therefore, when the hollow tube heater 21 is in operation, the tobacco rod portion 110 can be heated in a state in which the tobacco rod portion 110 is 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 of the tobacco rod portion 110. As a result, the tobacco filler 111 of the tobacco rod portion 110 is efficiently heated, and the delivery amount of aerosol and flavor components can be increased.

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 above-mentioned papermaking 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 contained 15.0% by mass of an aerosol generating agent (glycerin). The tobacco sheet contained 4.0% by mass of a reducing sugar. The tobacco sheet contained 1.94% by mass of a nicotine. The tobacco sheet contained 0.037% by mass of neophytadiene. The tobacco sheet contained 0.031% by mass of cembratrienediol (CBT). The tobacco sheet had a density of 0.48 g/ ^cm3 . The contents and densities of each component were measured by the above-mentioned methods.

(2) Production of Leaf Tobacco Leaf tobacco was used as a mixture of flue-cured (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 so that the content was 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 to 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 leaves = 80:20, thereby preparing a tobacco composition.

(4) Production of Tobacco-Containing Segment The tobacco composition was wrapped in cigarette paper so that the tobacco composition was on the inside 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 Inhalation Apparatus The tobacco-containing segment was used to produce the non-combustion heat-type flavor inhalation apparatus shown in FIG.

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

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 by the methods described above.

[evaluation]
The non-combustion heating type flavor inhalation devices manufactured in each Example and Comparative Example were evaluated by 10 panelists. The evaluation was made as a comprehensive evaluation of four items, "degree of flavor,""flavorpersistence,""textileodor," and "amount and persistence of smoke," through a total of 15 puffs. Each item was evaluated with a score of 1 (weak flavor, low flavor persistence, strong textile odor, low smoke amount and low persistence) to 5 (strong flavor, high flavor persistence, weak textile odor, high smoke amount and high persistence). For each item, a score of 3 or more was judged to be good, and a score of 2 or less was judged to be bad. The results are shown in Table 2. Table 2 shows the average scores of the 10 panelists. In addition, the 10 panelists had been thoroughly trained using several types of samples of different concentrations, and it was confirmed that the scores and evaluation thresholds for "degree of flavor,""flavorpersistence,""textileodor," and "smoke volume and persistence" were equal and standardized across the panelists.

As shown in Table 2, Examples 1 to 5 received scores of 3 or more in all evaluation items, whereas Comparative Examples 1 to 6 received scores of 1 or 2 in 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 terms of flavor intensity and duration, fiber odor, and smoke volume and duration, 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 carried out using "neophytadiene,""cembratrienediol(CBT)," and "reducing sugar" as variables. The results are shown in Table 3.

As shown in the results of the principal component analysis in Table 3, the factor loading of the first principal component is 62.67% of the total, and the factor loading of the second principal component is 91.51% of the total, which means that about 90% of the total can be explained. According to the principal component loadings, the first principal component is highly related to neophytadiene and cembratriene diol (CBT), and the second principal component is highly related to reducing sugars. In addition, a scatter diagram of the principal component scores is shown in FIG. 5. According to the scatter diagram of the principal component scores shown in FIG. 5, leaf tobacco is plotted in the first, second, and fourth quadrants, and tobacco sheet and tobacco composition containing tobacco sheet and leaf tobacco are plotted in the third quadrant. In other words, it can be seen that the tobacco content components are supplemented by mixing leaf tobacco with the tobacco sheet. In this embodiment, the first quadrant is approached by mixing leaf tobacco with the tobacco sheet, but it is also possible to approach the second and fourth quadrants by changing the mixing ratio of the leaf tobacco. However, as mentioned above, tobacco sheets are 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. Therefore, by mixing tobacco leaves and tobacco sheets in a certain ratio, it is possible to supply the user with an aerosol with 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 cut into widths of 0.5 mm, 1.0 mm, and 1.5 mm, respectively. The leaf tobacco was also cut into widths of 0.8 mm. Tobacco compositions of each Example were prepared by mixing tobacco sheets having cut widths shown in Table 4 with leaf tobacco in a ratio of tobacco sheet:leaf tobacco = 60:40 (mass ratio). Non-combustion heating type flavor inhalation devices were produced using the tobacco compositions in the same manner as in Example 1. The flavor levels of the non-combustion heating type flavor inhalation devices of each Example were evaluated in the same manner as in Example 1. Puffs were performed 15 times, and the flavor levels were evaluated in three terms, 1st to 5th, 6th to 10th, and 11th to 15th. 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 felt can be changed due to differences in thermal conductivity. The flavor can be further changed by changing the pitch width or the combination thereof according to the heating temperature of the non-combustion heating flavor inhalation device and the features 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 the delay in the development of the original flavor of the tobacco sheet.
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 bulk expansion 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 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 mass %.
[7] The tobacco composition according to any one of [1] to [6], wherein the aerosol generating agent content in the tobacco leaves is 2.0 to 15.0 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 leaves 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 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 mass%.
[16] The 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 tobacco sheet has a density of 0.40 to 0.60 g/ ^cm3 .
[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/ ^cm3 and a second tobacco sheet having a density of 0.55 g/ ^cm3 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-formed tobacco sheet to the slurry tobacco sheet is paper-formed 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 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 inhalation device.
[26] The tobacco composition according to any one of [1] to [25], wherein the mass ratio of the tobacco sheet to the tobacco leaves is tobacco sheet:tobacco leaves = (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 filling material 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 filling is 0.25 to 0.45 g/ ^cm3 .
[29] A non-combustion heating type flavor inhalation device comprising the tobacco-containing segment according to [27] or [28].
[30] A non-combustion heating type flavor inhalation device according to [29],
a heating device for heating the tobacco-containing segment;
A non-combustion heating type flavor inhalation system comprising:

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 (30)

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 volume of 300 to 580 cm ³ /100 g. 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 an aerosol generating agent in an amount of 5.0 to 20.0% by mass. The tobacco composition according to any one of claims 1 to 5, wherein the aerosol generating agent content in 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 leaves 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 leaves is 0.01% by mass or more. The tobacco composition according to any one of claims 1 to 13, wherein the tobacco sheet has a cembratrienediol (CBT) content of 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 tobacco sheet has a density of 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 having 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 a mass ratio of the paper-formed tobacco sheet to the slurry tobacco sheet is paper-formed 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 of the tobacco sheets having different cut widths within a range of 0.3 to 2.0 mm, and/or two or more of the leaf tobacco 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, which is a tobacco composition for a non-combustion heating type flavor inhalation device. The tobacco composition according to any one of claims 1 to 25, wherein the mass ratio of the tobacco sheet to the tobacco leaves is tobacco sheet:tobacco leaves = (40 or more and less than 70):(more than 30 and 60 or less). 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 26 is filled within the wrapper. 28. The tobacco-containing segment according to claim 27, 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 inhalation device comprising the tobacco-containing segment according to claim 27 or 28. The non-combustion heating type flavor inhalation device according to claim 29,
a heating device for heating the tobacco-containing segment;
A non-combustion heating type flavor inhalation system comprising: