Material for flavor inhalation article, heated flavor inhalation article, and heated flavor inhalation system

Abstract

A material for a flavor inhalation article, said material being obtained by mixing a cellulosic base material and nicotine.

Description

[Technical Field]

[0001] The present invention relates to a material for a flavor inhalation article, a heating-type flavor inhalation article, and a method for producing a material for a flavor inhalation article. [Background technology]

[0002] In recent years, in order to suppress the generation of smoke, heated flavor inhalation articles have been provided that enable tobacco components to be inhaled without combustion. The materials for the flavor inhalation articles that form the heated flavor inhalation articles contain nicotine, and some also contain menthol as a flavoring. The materials for the flavor inhalation articles contain a cellulose-based base material, a tobacco extract, and, if necessary, a polyol as an aerosol base material. The temperature of the device that heats the heated flavor inhalation article is generally 200°C or higher, and many of these articles are enjoyed by inhaling smoke derived from the polyol. For example, Patent Document 1 discloses a heated flavor inhalation article in which the materials for the flavor inhalation article are heated based on a specific temperature profile that includes a temperature range of 200°C or higher. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2018 / 019855 Summary of the Invention [Problem to be solved by the invention]

[0004] The inventors conceived the idea that if smoking could be enjoyed at a lower temperature, convenience for users would be improved. However, as described in Patent Document 1, in conventional heating-type flavor inhalation articles, it was difficult to obtain a satisfying feeling unless the material for the flavor inhalation article was heated to 200°C or higher. In view of this situation, an object of the present invention is to provide a material for a heating-type flavor inhalation article that can be used at a low heating temperature. [Means for solving the problem]

[0005] As a result of intensive research to solve the above problems, the present inventors have found that the above problems can be solved by mixing a cellulose-based substrate with nicotine, and have thus completed the present invention. Specific aspects of the present invention are as follows.

[0006] Aspect 1 A material for a flavor inhalation article, comprising a mixture of a cellulose-based substrate and nicotine. Aspect 2 2. The material for a flavor inhalation article according to Aspect 1, further comprising a fibrous material, wherein the material for a flavor inhalation article is a tobacco sheet for a non-combustion heating-type flavor inhaler. Aspect 3 The material for flavor inhalation articles according to aspect 2, wherein the fibrous material accounts for 5 to 50% by weight of 100% by weight of the material for flavor inhalation articles. Aspect 4 A non-combustion heating type flavor inhaler comprising a tobacco-containing segment comprising the material for a flavor inhalation article according to any one of the first to third aspects. Aspect 5 A non-combustion heating type flavor inhaler according to aspect 4; a heating device for heating the tobacco-containing segment; A non-combustion heating type flavor inhalation system. [Effects of the Invention]

[0007] The material for a flavor inhalation article of the present invention can be used at a low heating temperature. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a cross-sectional schematic diagram showing an example of a non-combustion heating type smoking system. [Figure 2] FIG. 2 is a cross-sectional view showing an example of a non-combustion heating type flavor inhalation article. [Figure 3] FIG. 3 is a graph showing the relationship between the amount of nicotine loaded and the nicotine release efficiency in an example. [Figure 4]FIG. 4 is a graph showing the relationship between the amount of menthol filled and the menthol release efficiency in the examples. DETAILED DESCRIPTION OF THE INVENTION

[0009] The material for a flavor inhalation article and the method for producing the material for a flavor inhalation article of the present invention will be described below.

[0010] 1.Materials for flavor suction articles In some embodiments of the present application, the material for the flavor inhalation article comprises a mixture of a cellulosic substrate and nicotine. The method for mixing the cellulose-based substrate and nicotine is not particularly limited, but it is preferable to mix them by supplying nicotine from the outside of the cellulose-based substrate. By supplying nicotine from the outside of the cellulose-based substrate, at least a portion of the nicotine becomes present on the surface of the cellulose-based substrate. This makes it easier for nicotine to be released to the outside of the material for flavor inhalation articles than when nicotine is present inside the cellulose-based substrate, and as a result, nicotine is sufficiently released even at a heating temperature lower than the conventional temperature of 200°C or higher. Here, the cellulose-based substrate may have a large number of pores on its surface (have a porous shape), and in this case, the surface of the cellulose-based substrate also includes the interior portions of the pores.

[0011] The cellulose-based substrate is not particularly limited, but examples thereof include tobacco leaves, aged tobacco leaves, processed tobacco leaves, tobacco filler, non-tobacco materials, and combinations of two or more of these. Among these, non-tobacco-derived cellulose materials are preferred from the viewpoint of preventing impurities, but tobacco-derived cellulose is also acceptable as long as it contains few impurities.

[0012] <Tobacco leaves, cured tobacco leaves, and processed tobacco leaves> In this specification, "tobacco leaf" is a general term for harvested tobacco leaves before undergoing the aging process described below. One form of aging includes curing. In contrast, tobacco leaves that have undergone aging and have not yet been processed into various forms used in tobacco products (such as tobacco shreds, tobacco sheets, and tobacco granules, which will be described later) are called "aged tobacco leaves." Furthermore, aged tobacco leaves that have been processed into various forms used in tobacco products are called "processed tobacco leaves."

[0013] Examples of the form of processed tobacco leaves used in tobacco products include "tobacco shreds," which are aged tobacco leaves shredded to a specified size. Other examples include "tobacco sheets," which are obtained by forming a composition containing aged tobacco leaves ground to a specified particle size (hereinafter also referred to as "tobacco fine powder") into a sheet shape, and "tobacco granules," which are obtained by forming the composition into a granular shape. The "tobacco fine powder" is also a form of processed tobacco leaves.

[0014] <Tobacco filler> A tobacco filler refers to a filler in which processed tobacco leaves are filled in a predetermined manner. The "filler" is the object into which processed tobacco leaves are filled, and is a part of the tobacco product. Examples of the filler include, but are not limited to, a cylindrical cigarette paper or a container with an air inlet and outlet. Examples of ways in which processed tobacco leaves are filled into a filler include, but are not limited to, wrapping the processed tobacco leaves in cigarette paper with the processed tobacco leaves on the inside (hereinafter also referred to as a "tobacco rod"), and filling the processed tobacco leaves into a flow path of a container having an air inlet and outlet (hereinafter also referred to as a "tobacco cartridge").

[0015] Examples of tobacco fillers include a tobacco filler made of tobacco shreds filled into a filler (hereinafter also referred to as a "first tobacco filler"), a tobacco filler made of tobacco sheets filled into a filler (hereinafter also referred to as a "second tobacco filler"), and a tobacco filler made of tobacco granules filled into a filler (hereinafter also referred to as a "third tobacco filler").

[0016] Non-tobacco materials include plant roots (including bulbs, tuberous roots, bulbs, etc.), stems, tubers, bark (including stem bark, bark, etc.), leaves, flowers (including petals, pistils, stamens, etc.), or seeds, or tree trunks and branches.

[0017] The content of the cellulose-based substrate in the entire material for the flavor inhalation article is not particularly limited, but from the viewpoint of shape stability, it is preferably 0.1 to 80% by weight, more preferably 1 to 75% by weight, and most preferably 5 to 50% by weight.

[0018] The nicotine may be selected from the group consisting of, but not limited to, synthetic nicotine, isolated nicotine, and combinations thereof.

[0019] The nicotine content in the entire material for a flavor inhalation article is not particularly limited, but from the viewpoint of the nicotine concentration in ordinary tobacco, the lower limit is preferably 2% by weight or more, and the upper limit can be 10% by weight or less, 8% by weight or less, or 7% by weight or less. The above-mentioned numerical range of the nicotine content can be applied to the content of externally added nicotine, the content of nicotine derived from tobacco, or the total content of these.

[0020] In some embodiments, the material for the flavor inhalation article may further include menthol. By further including menthol in the material for the flavor inhalation article, a refreshing cooling sensation can be obtained.

[0021] When the material for a flavor inhalation article contains menthol, the content of menthol in the entire material for a flavor inhalation article is not particularly limited, but from the perspective of the concentration in general tobacco products, the lower limit is preferably 6% by weight or more, and the upper limit can also be 25% by weight or less, 23% by weight or less, or 20% by weight or less.

[0022] In some embodiments, the flavor inhalation article material may further include myristic acid, palmitic acid, or a mixture thereof as other ingredients.

[0023] The form of the material for flavor inhalation articles is not particularly limited, but can be granules or a sheet (tobacco granules or tobacco sheet), and among these, granules are preferred from the viewpoint of stabilizing the filling weight. Furthermore, since it is preferable to use a tobacco-derived raw material as the cellulose-based base material, the material for flavor inhalation articles is more preferably tobacco granules or a tobacco sheet, and particularly preferably tobacco granules. These will be described in detail below.

[0024] <Tobacco Granules> As described above, tobacco granules are obtained by molding a composition containing aged tobacco leaves into a granular shape.

[0025] <Method of molding tobacco granules> The method for forming tobacco granules is not particularly limited, but can be obtained, for example, by mixing tobacco fine powder, nicotine, a flavor development aid, a binder, and optionally an aerosol-generating base material and a flavoring, adding water to the mixture and kneading it, granulating the resulting kneaded mixture (into long columns) in a wet extrusion granulator, and then sizing the granules into short columns or spheres. The tobacco granules contain both nicotine from tobacco-derived raw materials and added nicotine. During extrusion granulation, the kneaded material is preferably extruded at ambient temperature under a pressure of 2 kN or more. This high-pressure extrusion causes the temperature of the kneaded material at the outlet of the extrusion granulator to rise rapidly from ambient temperature to, for example, 90°C to 100°C, causing 2 to 4% by weight of moisture and volatile components to evaporate. Therefore, the amount of water used to prepare the kneaded material can be greater than the desired moisture content in the tobacco granules that are the final product, by the amount of evaporation. The tobacco granules obtained by extrusion granulation may be further dried, if necessary, to adjust the moisture content. For example, the loss on drying of the tobacco granules obtained by extrusion granulation may be measured, and if it is higher than the desired loss on drying (e.g., 5% by weight or more and 17% by weight or less), the tobacco granules may be further dried to obtain the desired loss on drying. The drying conditions (temperature and time) for obtaining the desired loss on drying can be determined in advance based on the drying conditions (temperature and time) required to reduce the loss on drying by a predetermined value.

[0026] <Tobacco Sheet> As described above, a tobacco sheet is obtained by forming a composition containing aged tobacco leaves into a sheet shape. The aged tobacco leaves used for the tobacco sheet are not particularly limited, but examples thereof include those that have been deboned and separated into lamina and midrib. In addition, in this specification, the term "sheet" refers to a shape having a pair of approximately parallel main surfaces and side surfaces.

[0027] <Tobacco sheet molding method> The method for forming a tobacco sheet is not particularly limited, but for example, tobacco powder, nicotine, a flavor development aid, a binder, and optionally an aerosol-generating base material and a flavoring can be mixed, water can be added to the mixture, and the resulting kneaded mixture can be formed by a known method such as a papermaking method, a casting method, a rolling method, etc. Details of various tobacco sheets formed by such methods are disclosed in "Encyclopedia of Tobacco," Tobacco Research Center, March 31, 2009.

[0028] When the material for a flavor inhalation article is in the form of granules, the particle size of the granules is not particularly limited, but from the viewpoint of improving the release efficiency of nicotine and / or menthol, as described below, it is preferably 250 μm or more, more preferably 250 to 850 μm, and most preferably 250 to 500 μm. The smaller the particle size of the granules, the higher the release efficiency of nicotine and / or menthol, as described below. Furthermore, the average particle size (D50) of the granules is not particularly limited, but from the viewpoint of improving the release efficiency of nicotine and / or menthol, as described below, it is preferably 250 to 450 μm, more preferably 250 to 400 μm, and most preferably 250 to 300 μm. The particle size and average particle size (D50) of the granules were measured using a laser diffraction method under dry conditions using a scattering particle size distribution analyzer (Partica, manufactured by Yamato Scientific Co., Ltd.). Occasionally It can be measured in accordance with the law.

[0029] When the material for a flavor inhalation article is in the form of granules, the surface area of ​​each granule is not particularly limited, but is preferably 0.1 to 2.5 mm from the viewpoint of improving the release efficiency of nicotine and / or menthol, which will be described later. 2 is preferable, and 0.1 to 1.5 mm 2 is more preferable, and 0.1 to 0.8 mm 2 is most preferred. The smaller the surface area per granule, the higher the release efficiency of nicotine and / or menthol, as described below. The surface area per granule can be calculated based on the following formula (1), assuming that the granule is a sphere.

[0030] S=4πr 2 (1) S: Surface area per granule π: Pi r: granule radius (value obtained by multiplying the particle diameter of the granules mentioned above by 1 / 2)

[0031] In some embodiments, the nicotine release efficiency per 10 puffs when the material for a flavor inhalation article is heated and inhaled at 55°C is not particularly limited, but the lower limit is preferably 0.6% or more, and the upper limit can be 5.0% or less, 2.5% or less, or 2.1% or less.

[0032] In some embodiments, the nicotine release efficiency per 10 puffs when the material for a flavor inhalation article is heated and inhaled at 70°C is not particularly limited, but the lower limit is preferably 1.8% or more, and the upper limit can be 6.0% or less, 5.5% or less, or 5.0% or less.

[0033] In some embodiments, the menthol release efficiency per 10 puffs when the material for a flavor inhalation article is heated and inhaled at 55°C is not particularly limited, but the lower limit is preferably 4% or more, and the upper limit may be 15.0%, 13.0%, or 10.2%.

[0034] In some embodiments, the menthol release efficiency per 10 puffs when the material for a flavor inhalation article is heated and inhaled at 70°C is not particularly limited, but the lower limit is preferably 7% or more, and the upper limit can be 20.0% or less, 18.0% or less, or 16.6% or less.

[0035] In some embodiments, the total particulate matter (TPM) of the material for flavor inhalation articles when heated and inhaled at 55°C is not particularly limited, but may be 0.5 to 10.0 mg, 0.7 to 7.0 mg, or 0.8 to 5.0 mg in terms of the filling amount.

[0036] In some embodiments, the total particulate matter (TPM) of the material for flavor inhalation articles when heated and inhaled at 70°C is not particularly limited, but may be 0.8 to 15.0 mg, 1.0 to 10.0 mg, or 1.3 to 7.8 mg in terms of the filling amount.

[0037] The nicotine or menthol release efficiency per 10 puffs when heated and inhaled at 55°C or 70°C and the total particulate matter (TPM) when heated and inhaled at 55°C or 70°C can be calculated by the method described in the Examples below (Analysis of nicotine and menthol released from tobacco granules).

[0038] 2. Method for producing material for flavor inhalation article In some embodiments, the material for the flavor inhalation article described in the above item 1. The nicotine-containing composition can be produced by a production method including the steps of: preparing the cellulose-based substrate and the nicotine; and supplying the nicotine from outside the cellulose-based substrate and applying at least a portion of the nicotine to the surface of the cellulose-based substrate. In the above-mentioned method for producing a material for a flavor inhalation article, a tobacco-derived material may be used as the cellulose-based substrate and formed into tobacco granules or a tobacco sheet in advance, and nicotine may be supplied to such a cellulose-based substrate from the outside, so that the final material for a flavor inhalation article is in the form of a tobacco granule or a tobacco sheet.

[0039] Nicotine can be supplied from the outside of the cellulose-based substrate by spraying under a pressure of, for example, 0.1 MPa, although the supply is not particularly limited. When nicotine is supplied by spraying, the pressure conditions are not particularly limited, but are preferably 0.05 to 2.5 MPa, more preferably 0.05 to 2.0 MPa, and most preferably 1.00 to 1.50 MPa. When the pressure during nicotine supply is within the above range, nicotine can be efficiently attached to the surface of the cellulose-based substrate, and as a result, the release efficiency of the nicotine and / or menthol can be further improved.

[0040] 3. Flavor suction products In some embodiments, the flavor inhalation article may be a flavor inhalation article, particularly a heating type flavor inhalation article, containing the material for a flavor inhalation article described in the above item 1.

[0041] In the present application, the term "flavor inhalation article" refers to an inhalation article that allows a user to enjoy a flavor by inhaling. Flavor inhalation articles can be broadly divided into combustion-type flavor inhalation articles, such as conventional cigarettes, and non-combustion-type flavor inhalation articles.

[0042] Examples of combustion-type flavor inhalation articles include cigarettes, pipes, kiseru, cigars, and cigarillos.

[0043] A non-combustion heating type flavor inhalation article (heating type flavor inhalation article) may be heated by a heating device separate from the article, or may be heated by a heating device integrated with the article. In the former type of flavor inhalation article (separate type), the non-combustion heating type flavor inhalation article and the heating device are collectively referred to as a "non-combustion heating type smoking system." An example of a non-combustion heating type smoking system will be described below with reference to FIGS. 1 and 2.

[0044] Fig. 1 is a cross-sectional schematic diagram showing an example of a non-combustion heating-type smoking system, showing a state before a heater 12 is inserted into a smoking segment 20A of a non-combustion heating-type flavor inhalation article 20. During use, the heater 12 is inserted into the smoking segment 20A. Fig. 2 is a cross-sectional view of the non-combustion heating-type flavor inhalation article 20.

[0045] As shown in Fig. 1, the non-combustion heating smoking system includes a non-combustion heating flavor inhalation article 20 and a heating device 10 that heats the smoking segment 20A from the inside. However, the non-combustion heating smoking system is not limited to the configuration shown in Fig. 1.

[0046] 1 includes a body 11 and a heater 12. Although not shown, the body 11 may include a battery unit and a control unit. The heater 12 may be an electric resistance heater and is inserted into the smoking segment 20A to heat the smoking segment 20A.

[0047] In FIG. 1, the smoking segment 20A is heated from the inside, but the embodiment of the non-combustion heating flavor inhalation article 20 is not limited to this, and in another embodiment, the smoking segment 20A is heated from the outside.

[0048] The heating temperature by the heating device 10 is not particularly limited, but is preferably 400° C. or less, more preferably 50 to 400° C., and even more preferably 150 to 350° C. The heating temperature refers to the temperature of the heater 12 of the heating device 10.

[0049] As shown in Fig. 2, the non-combustion heating type flavor inhalation article 20 (hereinafter simply referred to as "flavor inhalation article 20") has a cylindrical shape. The circumferential length of the flavor inhalation article 20 is preferably 16 mm to 27 mm, more preferably 20 mm to 26 mm, and even more preferably 21 mm to 25 mm. The total length (horizontal length) of the flavor inhalation article 20 is not particularly limited, but is preferably 40 mm to 90 mm, more preferably 50 mm to 75 mm, and even more preferably 50 mm to 60 mm.

[0050] The flavor inhalation article 20 is composed of a smoking segment 20A, a filter portion 20C that forms the mouthpiece, and a connecting portion 20B that connects these together.

[0051] The smoking segment 20A is cylindrical, and its total length (axial length) is, for example, preferably 5 to 100 mm, more preferably 10 to 50 mm, and even more preferably 10 to 25 mm. The cross-sectional shape of the smoking segment 20A is not particularly limited, but may be, for example, circular, elliptical, polygonal, etc.

[0052] The smoking segment 20A comprises a smoking composition sheet or material derived therefrom 21 and a wrapper 22 wrapped therearound.

[0053] The filter section 20C has a cylindrical shape. The filter section 20C has a rod-shaped first segment 25 filled with cellulose acetate fibers and a rod-shaped second segment 26 also filled with cellulose acetate fibers. The first segment 25 is located on the smoking segment 20A side. The first segment 25 may have a hollow portion. The second segment 26 is located on the mouthpiece side. The second segment 26 is solid. The first segment 25 is composed of a first packing layer (cellulose acetate fibers) 25a and an inner plug wrapper 25b wrapped around the first packing layer 25a. The second segment 26 is composed of a second packing layer (cellulose acetate fibers) 26a and an inner plug wrapper 26b wrapped around the second packing layer 26a. The first segment 25 and the second segment 26 are connected by an outer plug wrapper 27. The outer plug wrapper 27 is adhered to the first segment 25 and the second segment 26 with a vinyl acetate emulsion adhesive or the like.

[0054] The length of the filter portion 20C can be, for example, 10 to 30 mm, the length of the connecting portion 20B can be, for example, 10 to 30 mm, the length of the first segment 25 can be, for example, 5 to 15 mm, and the length of the second segment 26 can be, for example, 5 to 15 mm. These lengths of the individual segments are merely examples and can be changed as appropriate depending on the manufacturability, required quality, the length of the smoking segment 20A, etc.

[0055] For example, the first segment 25 (center hole segment) is composed of a first packed layer 25a having one or more hollow portions and an inner plug wrapper 25b that covers the first packed layer 25a. The first segment 25 has the function of increasing the strength of the second segment 26. The first packed layer 25a of the first segment 25 is densely packed with, for example, cellulose acetate fibers. A plasticizer containing triacetin is added to the cellulose acetate fibers in an amount of, for example, 6 to 20% by weight relative to the weight of the cellulose acetate, and the fibers are hardened. The hollow portion of the first segment 25 has an inner diameter of, for example, 1.0 to 5.0 mm.

[0056] The first packed layer 25a of the first segment 25 may be configured with, for example, a relatively high fiber packing density, or may be equivalent to the fiber packing density of the second packed layer 26a of the second segment 26 described below. Therefore, during inhalation, air and aerosol flow only through the hollow portion, and almost no air or aerosol flows through the first packed layer 25a. For example, if it is desired to reduce the loss of aerosol components due to filtration in the second segment 26, the length of the second segment 26 can be shortened and the first segment 25 can be lengthened accordingly.

[0057] shortened minutes Replacing the second segment 26 with the first segment 25 is effective in increasing the amount of aerosol components delivered. Because the first packed layer 25a of the first segment 25 is a fiber packed layer, the feel from the outside during use does not cause discomfort to the user.

[0058] The second segment 26 is composed of a second packed layer 26a and an inner plug wrapper 26b that covers the second packed layer 26a. The second segment 26 (filter segment) is filled with cellulose acetate fibers at a typical density and has the ability to filter typical aerosol components.

[0059] The first segment 25 and the second segment 26 may have different filtering capabilities for filtering the aerosol (mainstream smoke) emitted from the smoking segment 20A. At least one of the first segment 25 and the second segment 26 may contain a flavoring. The filter portion 20C may have any structure, including multiple segments as described above, or may be composed of a single segment. The filter portion 20C may also be composed of a single segment. In this case, the filter portion 20C may be composed of either the first segment or the second segment.

[0060] The connecting portion 20B is cylindrical. The connecting portion 20B has a cardboard tube 23 formed into a cylindrical shape using, for example, cardboard. The connecting portion 20B may be filled with a cooling material for cooling the aerosol. Examples of the cooling material include a sheet of polymer such as polylactic acid, which can be folded and filled. Furthermore, a support portion may be provided between the smoking segment 20A and the connecting portion 20B to prevent the position of the smoking segment 20A from shifting. The support portion may be made of a known material, such as a center hole filter, like the first segment 25.

[0061] Wrapper 28 is wrapped around the outside of smoking segment 20A, connecting portion 20B, and filter portion 20C in a cylindrical shape, connecting them together. One surface (inner surface) of wrapper 28 is coated entirely or almost entirely with a vinyl acetate emulsion adhesive, except for the area around ventilation hole portion 24. After wrapper 28 has integrated smoking segment 20A, connecting portion 20B, and filter portion 20C, ventilation hole portion 24 is formed by laser processing from the outside.

[0062] The air vent section 24 has two or more through holes penetrating the connecting section 20B in the thickness direction. The two or more through holes are formed so as to be radially arranged when viewed from an extension of the central axis of the flavor inhalation article 20. In this embodiment, the air vent section 24 is provided in the connecting section 20B, but may also be provided in the filter section 20C. In addition, in this embodiment, the two or more through holes of the air vent section 24 are arranged in a row at a fixed interval on one circular ring, but may also be arranged in two rows at a fixed interval on two circular rings, or may be arranged in one or two rows. through hole When a user holds the mouthpiece in their mouth and inhales, outside air is taken into the mainstream smoke through the vent hole portion 24. However, the vent hole portion 24 does not have to be provided.

[0063] The heating-type flavor inhalation article can include a pouch containing the material for a flavor inhalation article described in section 1 above. The pouch can be any known material, without limitation, as long as it can package the filling, is insoluble in water, and is permeable to liquids (water, saliva, etc.) and water-soluble components in the filling. For example, a nonwoven fabric pouch can be used. Examples of pouch materials include cellulose-based nonwoven fabrics, and commercially available nonwoven fabrics may also be used. A pouch product can be produced by forming a sheet made of such a material into a bag shape, filling it with the filling, and sealing it by means such as heat sealing.

[0064] The basis weight of the sheet is not particularly limited, but is usually 12 gsm to 54 gsm, and preferably 24 gsm to 30 gsm. The thickness of the sheet is not particularly limited, but is usually 100 μm to 300 μm, and preferably 175 μm to 215 μm.

[0065] A water-repellent material may be applied to at least one of the inner and outer surfaces of the pouch. A water-repellent fluororesin is preferably used as the water-repellent material. Specifically, an example of this type of water-repellent fluororesin is Asahi Guard (registered trademark) manufactured by Asahi Glass Co., Ltd. Water-repellent fluororesins are applied to packaging materials for foods and products containing fats and oils, such as confectioneries, dairy products, prepared foods, fast food, and pet food. Therefore, this type of water-repellent fluororesin is safe to apply to pouches placed in the oral cavity. The water-repellent material is not limited to fluororesins, and may be, for example, a water-repellent material such as paraffin resin, silicone resin, or epoxy resin.

[0066] As described above, a non-combustion heating type flavor inhaler can include a tobacco-containing segment filled with a tobacco sheet or the like, a cooling segment, and a filter segment. The term flavor inhaler is synonymous with flavor inhalation article, and the terms are used interchangeably. The axial length of the tobacco-containing segment of a non-combustion heating type flavor inhaler is usually shorter than the axial length of the tobacco-containing segment of a combustion type flavor inhaler due to its relationship to the heater. Therefore, in a non-combustion heating type flavor inhaler, a large amount of tobacco sheet is filled within the short section of the tobacco-containing segment to ensure the amount of aerosol generated during heating. To fill a large amount of tobacco sheet within a short section, a non-combustion heating type flavor inhaler typically uses a tobacco sheet with low expansion bulk, i.e., a high density. Incidentally, expansion bulk is a value indicating the volume when a predetermined weight of tobacco sheet shreds is compressed under a constant pressure for a certain period of time.

[0067] However, the inventors have found that, when considering the heating method, the heating capacity of the heater, and the generation of aerosol, using a tobacco sheet with low bulk (high density) increases the total heat capacity of the tobacco-containing segment, and therefore, depending on the heating method and heater capacity, the tobacco sheet filled in the tobacco-containing segment does not contribute sufficiently to aerosol generation. In order to solve this problem, it is conceivable to reduce the total heat capacity of the tobacco-containing segment.

[0068] The inventors of the present invention have investigated the following measures to reduce the total heat capacity of the tobacco-containing segment: (1) reducing the specific heat of the tobacco material contained in the tobacco sheet; and (2) using a tobacco sheet with high expansion volume (low density). However, since it is difficult to reduce the specific heat of the tobacco material itself in (1), it was considered effective to reduce the total heat capacity of the tobacco-containing segment by (2). Therefore, as a first preferred embodiment, an embodiment in which the material for a flavor inhalation article is a tobacco sheet with high expansion volume (low density) suitable for use in a non-combustion heating-type flavor inhaler will be described below.

[0069] [First embodiment] [Tobacco sheets for non-combustion heated flavor inhalers] The tobacco sheet for a non-combustion heating-type flavor inhaler according to this embodiment (hereinafter also referred to as "tobacco sheet") contains a fibrous material. Because the tobacco sheet according to this embodiment contains a fibrous material, it is bulky and has high expandability. Therefore, by using the tobacco sheet according to this embodiment, the total heat capacity of the tobacco-containing segment can be reduced, and the tobacco sheet filled in the tobacco-containing segment can be made to contribute sufficiently to aerosol generation. Furthermore, it is preferable that the tobacco sheet according to this embodiment further contains a tobacco raw material, an aerosol-generating base material, and a molding agent, and by setting the blending ratios of these within specified ranges, the expandability of the tobacco sheet can be further improved.

[0070] (fibrous material) The fibrous material contained in the tobacco sheet according to this embodiment is not particularly limited as long as it is a material having a fibrous shape like fibers. Examples of the fibrous material include fibrous pulp, fibrous tobacco material, and fibrous synthetic cellulose. These may be used alone or in combination of two or more. Among these, fibrous pulp is preferred as the fibrous material from the viewpoint of fiber rigidity.

[0071] The proportion of fibrous material contained in 100% by weight of tobacco sheet is preferably 5 to 50% by weight. When the proportion of the fibrous material is 5% by weight or more, a bulkiness that can ensure functionality can be achieved. Furthermore, when the proportion of the fibrous material is 50% by weight or less, sufficient tobacco aroma and aerosol can be generated when heated. The proportion of the fibrous material is more preferably 5 to 47% by weight, even more preferably 5 to 45% by weight, and particularly preferably 5 to 40% by weight.

[0072] (Tobacco raw materials) When the fibrous material is other than a fibrous tobacco material, the tobacco sheet according to this embodiment may further contain a tobacco raw material. The tobacco raw material may or may not fall under the aforementioned cellulose-based substrate. Examples of tobacco raw materials containing tobacco components include tobacco powder and tobacco extract. Examples of tobacco powder include tobacco leaves, ribs, and stem residues. These may be used alone or in combination. These can be shredded to a predetermined size to produce tobacco powder. From the perspective of further improving swelling, it is preferable that the size of the tobacco powder has a cumulative 90% particle diameter (D90) of 200 μm or more in the volume-based particle size distribution measured by dry laser diffraction. Examples of tobacco extracts include tobacco extracts obtained by coarsely crushing tobacco leaves, mixing and stirring the crushed leaves with a solvent such as water to extract water-soluble components from the tobacco leaves, and then concentrating the resulting aqueous extract by drying under reduced pressure.

[0073] The proportion of tobacco raw material contained in 100% by weight of tobacco sheet is preferably 30 to 91% by weight. When the proportion of the tobacco raw material is 30% by weight or more, a sufficient tobacco aroma can be generated when heated. Furthermore, when the proportion of the tobacco raw material is 91% by weight or less, sufficient amounts of aerosol-generating base material and molding agent can be contained. The proportion of the tobacco raw material is more preferably 50 to 90% by weight, even more preferably 55 to 85% by weight, and particularly preferably 60 to 80% by weight.

[0074] (nicotine) The nicotine may be any of those mentioned above. In this embodiment, a nicotine-containing tobacco extract may be used as the nicotine. Examples of the tobacco extract include a tobacco extract obtained by roughly crushing tobacco leaves, mixing and stirring the crushed leaves with a solvent such as water to extract water-soluble components from the tobacco leaves, and then drying and concentrating the resulting water extract under reduced pressure.

[0075] (molding agent) When the fibrous material is other than a fibrous molding agent such as fibrous synthetic cellulose, the tobacco sheet according to this embodiment preferably further contains a molding agent from the viewpoint of maintaining the shape. The molding agent is a type of the binder described above. Examples of molding agents include polysaccharides, proteins, synthetic polymers, etc. These may be used alone or in combination of two or more. Examples of polysaccharides include cellulose derivatives and naturally occurring polysaccharides.

[0076] Examples of cellulose derivatives include cellulose ethers such as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxymethylethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, benzyl cellulose, trityl cellulose, cyanoethyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, and aminoethyl cellulose; organic acid esters such as cellulose acetate, cellulose formate, cellulose propionate, cellulose butyrate, cellulose benzoate, cellulose phthalate, and tosyl cellulose; and inorganic acid esters such as cellulose nitrate, cellulose sulfate, cellulose phosphate, and cellulose xanthate.

[0077] Examples of naturally occurring polysaccharides include plant-derived polysaccharides such as guar gum, tara gum, roasted bean gum, tamarind seed gum, pectin, gum arabic, tragacanth gum, karaya gum, ghatti gum, arabinogalactan, amaryllis seed gum, cassia gum, psyllium seed gum, and desert artemisia seed gum; algae-derived polysaccharides such as carrageenan, agar, alginic acid, propylene glycol alginate, furcellaran, and flavonoid extract; microbial polysaccharides such as xanthan gum, gellan gum, curdlan, pullulan, Agrobacterium succinoglycan, welan gum, macrophomopsis gum, and rhamsan gum; crustacean-derived polysaccharides such as chitin, chitosan, and glucosamine; and starches such as starch, sodium starch glycolate, pregelatinized starch, and dextrin.

[0078] Examples of proteins include grain proteins such as wheat gluten, rye gluten, etc. Examples of synthetic polymers include polyphosphoric acid, sodium polyacrylate, polyvinylpyrrolidone, etc.

[0079] When a tobacco sheet contains a molding agent, the proportion of the molding agent in 100% by weight of the tobacco sheet is preferably 0.1 to 15% by weight. A molding agent proportion of 0.1% by weight or more makes it possible to easily mold the raw material mixture into a sheet. Furthermore, a molding agent proportion of 15% by weight or less allows for the sufficient use of other raw materials to ensure the functionality required of the tobacco-containing segment of a non-combustion heating flavor inhaler. The proportion of the molding agent is more preferably 0.2 to 13% by weight, even more preferably 0.5 to 12% by weight, and particularly preferably 1 to 10% by weight.

[0080] (aerosol-generating substrate) From the viewpoint of increasing the amount of smoke produced when heated, the tobacco sheet according to this embodiment preferably further comprises an aerosol-forming base material. Examples of aerosol-forming base materials include glycerin, propylene glycol, and 1,3-butanediol. These may be used alone or in combination of two or more.

[0081] When the tobacco sheet contains an aerosol-generating substrate, the proportion of the aerosol-generating substrate in 100% by weight of the tobacco sheet is preferably 5 to 50% by weight. When the proportion of the aerosol-generating substrate is 5% by weight or more, a sufficient amount of aerosol can be generated when heated. When the proportion of the aerosol-generating substrate is 50% by weight or less, a sufficient amount of aerosol can be generated when heated in terms of heat capacity. The proportion of the aerosol-generating substrate is more preferably 6 to 45% by weight, even more preferably 8 to 40% by weight, and particularly preferably 10 to 30% by weight.

[0082] (reinforcing agent) When the fibrous material is other than a fibrous reinforcing agent such as fibrous pulp, the tobacco sheet according to this embodiment may further contain a reinforcing agent in order to further improve the physical properties. Examples of reinforcing agents include liquid substances with a surface coating function that form a film when dried, such as pulp and pectin suspension. These may be used alone or in combination of two or more.

[0083] When a reinforcing agent is contained in the tobacco sheet, the proportion of the reinforcing agent contained in 100% by weight of the tobacco sheet is preferably 0.1 to 20% by weight. When the proportion of the reinforcing agent is within this range, other ingredients can be used sufficiently to ensure the functionality required of the tobacco-containing segment of a non-combustion heating-type flavor inhaler. The proportion of the reinforcing agent is more preferably 0.2 to 18% by weight, and even more preferably 0.5 to 15% by weight.

[0084] (moisturizer) From the viewpoint of maintaining quality, the tobacco sheet according to this embodiment may further contain a humectant. Examples of humectants include sugar alcohols such as sorbitol, erythritol, xylitol, maltitol, lactitol, mannitol, and reduced maltose syrup. These may be used alone or in combination of two or more.

[0085] When a tobacco sheet contains a humectant, the proportion of the humectant contained in 100% by weight of the tobacco sheet is preferably 1 to 15% by weight. Within this range, other ingredients can be used sufficiently to ensure the functionality required of the tobacco-containing segment of a non-combustion heating-type flavor inhaler. The proportion of the humectant is more preferably 2 to 12% by weight, and even more preferably 3 to 10% by weight.

[0086] (Other ingredients) The tobacco sheet according to this embodiment may contain, in addition to the fibrous material, the tobacco raw material, the molding agent, the aerosol-generating base material, the reinforcing agent, and the moisturizing agent, flavorings such as fragrances and flavoring agents, colorants, humectants, preservatives, diluents such as inorganic substances, etc., as needed.

[0087] (bulkness) The expansion capacity of the tobacco sheet according to this embodiment is preferably 190 cc / 100 g or more. A expansion capacity of 190 cc / 100 g or more allows the total heat capacity of the tobacco-containing segment of a non-combustion heating-type flavor inhaler to be sufficiently reduced, allowing the tobacco sheet filled in the tobacco-containing segment to contribute more to aerosol generation. The expansion capacity is more preferably 210 cc / 100 g or more, and even more preferably 230 cc / 100 g or more. The upper limit of the expansion capacity range is not particularly limited, but can be, for example, 800 cc / 100 g or less. The expansion capacity is measured using a DD-60A (trade name, manufactured by Borgwald) after cutting the tobacco sheet into pieces of 0.8 mm x 9.5 mm and storing them in a conditioned room at 22°C and 60% humidity for 48 hours. The measurement is carried out by placing 15 g of shredded tobacco sheet in a cylindrical container with an inner diameter of 60 mm and compressing it with a 3 kg load for 30 seconds to determine the volume.

[0088] (Tobacco sheet composition) In this embodiment, a "tobacco sheet" refers to a sheet formed from the components that make up the tobacco sheet. Here, "sheet" refers to a shape having a pair of approximately parallel main surfaces and side surfaces. The length and width of the tobacco sheet are not particularly limited and can be adjusted appropriately depending on the filling mode. The thickness of the tobacco sheet is not particularly limited, but is preferably 100 to 1000 μm, more preferably 150 to 600 μm, in terms of the balance between heat transfer efficiency and strength.

[0089] (Tobacco sheet manufacturing method) The tobacco sheet according to this embodiment can be manufactured by known methods, such as rolling, casting, etc. Details of various tobacco sheets manufactured by such methods are disclosed in "Encyclopedia of Tobacco," Tobacco Research Center, March 31, 2009.

[0090] <Rolling method> An example of a method for producing a tobacco sheet by rolling includes the following steps. (1) A step of mixing water, tobacco powder as a cellulosic base material, an aerosol-generating base material, a molding agent, and fibrous pulp to obtain a mixture. (2) A step of feeding the mixture into a rolling roller and rolling it. (3) 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 producing a tobacco sheet using this method, the surface of each rolling roller may be heated or cooled, and the rotation speed of each rolling roller may be adjusted, depending on the purpose. Furthermore, by adjusting the gap between each rolling roller, a tobacco sheet of the desired basis weight can be obtained. Between steps (1) and (2), between steps (2) and (3), or after step (3), a step of supplying the nicotine from outside the cellulose-based substrate and applying at least a portion of it to the surface of the cellulose-based substrate may be provided.

[0091] <Casting method> Examples of methods for producing a tobacco sheet by the casting method include a method including the following steps. (1) A step of mixing water, tobacco powder as a cellulosic base material, an aerosol-generating base material, a molding agent, and fibrous pulp to obtain a mixture. (2) The mixture is thinly spread (cast) and dried to form a tobacco sheet. When producing tobacco sheets using this method, a step may be added in which a slurry containing water, tobacco powder, an aerosol-generating base material, a molding agent, and fibrous pulp is irradiated with ultraviolet light or X-rays to remove some components such as nitrosamines. Between steps (1) and (2) or after step (2), a step of supplying the nicotine from outside the cellulose-based substrate and applying at least a portion of it to the surface of the cellulose-based substrate may be provided. [Example]

[0092] The present invention will be experimentally explained by the following examples, but the following explanation should not be construed as limiting the scope of the present invention to the following examples.

[0093] (Preparation of Tobacco Granules) Burley tobacco shreds with a nicotine concentration of 0.01% were heated to 120°C and washed four times with water. The shredded tobacco was then milled and sieved through a 50 μm mesh sieve to obtain tobacco powder with a particle size of less than 50 μm. 1000 g of the resulting tobacco powder, 50 g of CMC (carboxymethylcellulose), and 100 g of glycerin were mixed together, and 300 g of water was added to the resulting mixture and kneaded. The resulting kneaded mixture was placed in a wet extrusion granulator (TDG-80A-1, manufactured by Dalton Co., Ltd.) and granulated into long cylindrical pellets under conditions of 250 kN pressure and 80°C temperature. The pellets were then sized into spherical tobacco granules (particle size: 250-500 μm, average particle size (D50) of 352 μm). In addition, tobacco granules (spherical) (particle size 500-850 μm, average particle size (D50) 643 μm) were obtained in the same manner as above, except that the granulation conditions of the wet extrusion granulator were changed to pressure: 200 kN and temperature: 75°C. The particle size of the above granules was measured based on the laser diffraction method under dry conditions using a scattering type particle size distribution measuring device (Partica, manufactured by Yamato Scientific Co., Ltd.) after drying at 100°C for 2 hours.

[0094] Then, 50 g of each of the tobacco granules obtained as described above was sprayed from the outside with a spray device (glass sprayer, manufactured by AS ONE Corporation) under a pressure of 0.1 MPa. Cotine ((-)-nicotine, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.): 1 g dissolved in 10 g of water, and menthol (l-menthol, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.): 10 g A solution prepared by dissolving the above in 10 g of propylene glycol (PG) at a temperature of 50°C or higher was sprayed onto the tobacco granules. In this manner, tobacco granules with 2.179 mg of nicotine and 6.190 mg of menthol attached to their surface per 100 mg (nicotine content and menthol content relative to the total tobacco granules were 2.179 wt% and 6.190 wt%, respectively, particle size 250-500 μm, average particle size (D50) 352 μm) (hereinafter referred to as "tobacco granule A"), and tobacco granules with 2.125 mg of nicotine and 6.584 mg of menthol attached to their surface per 100 mg (nicotine content and menthol content relative to the total tobacco granules were 2.125 wt% and 6.584 wt%, respectively, particle size 500-850 μm, average particle size (D50) 643 μm) (hereinafter referred to as "tobacco granule B") were obtained.

[0095] Based on the formula (1) described in the above section "1. Materials for Flavor Inhalation Articles," the surface area per tobacco granule A and B was calculated to be 0.196 to 0.785 mm. 2 (Average value 0.442mm 2 ) and 0.785~2.270mm 2 (Average value 1.431mm 2 ) became.

[0096] (Analysis of nicotine and menthol released from tobacco granules) A tobacco-free bottomless cylinder (material: paper, inner diameter of about 6.8 mm) was filled with 100 mg, 200 mg, or 300 mg of the tobacco granules A or B obtained as described above. After that, acetate filters (manufactured by Nippon Filter Industry Co., Ltd.) were placed at both ends of the cylinder to seal the tobacco granules. Adjacent to one of the acetate filters placed in the cylinder, a glass fiber filter (product name: Cambridge Filter 44 mm, manufactured by Borgwaldt) and a smoking machine (single-port smoking machine, manufactured by Borgwaldt) were arranged in order from the cylinder side. The cylinder containing the tobacco granules was heated from the outside by a heater (set temperature: 55 °C or 70 °C) to generate steam and aerosol, and the generated steam and aerosol were sucked by the smoking machine. The suction was carried out at 55 ml / 2 seconds per puff based on the CIR method (Canadian Intense Smoking Conditions Method) (one puff is at an interval of 30 seconds, that is, sucking for 2 seconds and waiting for 28 seconds), and a total of 10 puffs were performed. Then, by quantifying the amount of nicotine and menthol collected by the glass fiber filter after 10 puffs, the value of the collection amount (inhalation amount) of nicotine or menthol per puff was obtained. This quantification was carried out by using isopropanol (IPA) 10 ml as an extraction solvent, shaking and extracting under the conditions of 200 rpm for 20 minutes, and performing GC analysis on the obtained extract under the following conditions.

[0097] <GC analysis conditions> Inlet temperature: 240 °C Oven temperature: Hold at 150 °C for 1.3 minutes, then increase the temperature to 240 °C at 70 °C / min and hold for 5 minutes Column: Product name: DB-WAX 10 m × 0.18 mm × 0.18 μm, manufactured by Agilent Detector: FID

[0098] Also, the weight of the glass fiber filter before smoking was subtracted from the weight of the glass fiber filter after smoking to calculate the weight difference before and after smoking of the glass fiber filter, and this weight difference was regarded as the amount of total particulate matter (TPM) contained in the steam and aerosol sucked by the smoking machine. Furthermore, for each of nicotine and menthol, the ratio of the amount collected per 10 puffs to the amount of nicotine or menthol filled was calculated (amount collected per 10 puffs / filled amount × 100) (hereinafter referred to as "release efficiency per 10 puffs"). The results obtained are shown in Table 1 and FIGS.

[0099] [Table 1]

[0100] The materials for flavor inhalation articles of Examples 1 to 12 are materials for flavor inhalation articles made by mixing a cellulose-based base material and nicotine. 3 and 4, it was found that the materials for flavor inhalation articles of Examples 1 to 12 easily released nicotine, with a nicotine release efficiency of 1.8% or more per 10 puffs, even when heated to a low temperature of 70° C., which is lower than the conventional temperature of 200° C. or higher. In addition, the materials for flavor inhalation articles of Examples 1 to 12 easily released menthol, with a menthol release efficiency of 7% or more per 10 puffs, even when heated to a low temperature of 70° C.

[0101] Furthermore, the materials for flavor inhalation articles of Examples 1 to 12 still easily release nicotine, even when the heating temperature was further reduced from 70° C. to an extremely low temperature of 55° C., with a nicotine release efficiency of 0.6% or more per 10 puffs. Additionally, the materials for flavor inhalation articles of Examples 1 to 12 still easily release menthol, even when the heating temperature was reduced to an extremely low temperature of 55° C., with a menthol release efficiency of 4% or more per 10 puffs.

[0102] The materials for flavor inhalation articles in Examples 1 to 12 were formed by supplying nicotine and menthol from the outside of the tobacco granules, and therefore, it is believed that the nicotine and menthol adhered to the surface of the material for flavor inhalation articles and inside the pores formed on the surface. The nicotine and menthol adhering to the surface of the material for flavor inhalation articles and inside the pores are closer to the outer surface than the nicotine and the like present inside the material for flavor inhalation articles due to the original components thereof, and therefore are believed to be more easily released. Therefore, it is believed that even when the heating temperature is low, the nicotine and menthol were sufficiently released to the outside, resulting in high release efficiency.

[0103] Furthermore, the results of Table 1 and Figures 3 and 4 show that, even at the same heating temperature, tobacco granules A, which have a smaller particle size, tend to have a higher nicotine release efficiency per 10 puffs compared to tobacco granules B, which have a larger particle size. In this regard, it is thought that, when the tobacco granule filling amount is the same, the total surface area of ​​all tobacco granules increases as the particle size of the tobacco granules decreases. This increase in surface area is thought to increase the amount of nicotine present on the surface of the tobacco granules and released, thereby increasing the nicotine release efficiency. Furthermore, it was found that the lower the nicotine loading, the higher the nicotine release efficiency per 10 puffs. In this regard, it is thought that, when the particle size of the tobacco granules is the same, the lower the nicotine loading, the thinner the nicotine layer adhering to the surface of the tobacco granules. It is thought that if the nicotine layer is thick, the nicotine below that layer will be less likely to be released. On the other hand, if the nicotine layer is thin, nicotine will be more easily released from the entire layer, which is thought to result in a higher nicotine release efficiency. These trends observed for nicotine were also observed for menthol release efficiency. nicotine It seems to be caused by the same reasons as above.

[0104] From the above, it was found that the material for a flavor inhalation article of the present invention can be used at a low heating temperature.

[0105] The first embodiment will be described below with reference to reference examples. [Reference example 1] Tobacco lamina (leaf tobacco) was dry-milled using a Hosokawa Micron ACM mill to obtain tobacco powder. The cumulative 90% particle size (D90) of the volume-based particle size distribution of the tobacco powder was measured using a Mastersizer (product name, manufactured by Spectris, Malvern Panalytical Division) by dry laser diffraction, and was found to be 200 μm.

[0106] The tobacco powder was used as the tobacco raw material to produce a tobacco sheet by a rolling method. Specifically, 77 parts by weight of the tobacco raw material, 12 parts by weight of glycerin as an aerosol-generating base material, 1 part by weight of carboxymethyl cellulose as a molding agent, and 10 parts by weight of fibrous pulp (dry-defibrated pulp manufactured by Canfor Corporation) as a fibrous material were mixed and kneaded in an extrusion molding machine. The kneaded mixture was molded into a sheet using two pairs of metal rolls and dried in a hot air circulating oven at 80°C to obtain a tobacco sheet. The tobacco sheet was then shredded into 0.8 mm x 9.5 mm pieces using a shredder.

[0107] The swelling capacity of the shredded tobacco sheet was measured. Specifically, the shredded tobacco sheet was left in a conditioned room at 22°C and 60% humidity for 48 hours, and then the swelling capacity was measured using a DD-60A (trade name, manufactured by Borgwald). The measurement was carried out by placing 15 g of the shredded tobacco sheet in a cylindrical container with an inner diameter of 60 mm, and compressing it for 30 seconds under a 3 kg load to determine the volume. The results are shown in Table 2. 2 The swelling property is expressed as an increase rate (%) of swelling property relative to the reference value, which is based on the swelling property value of Comparative Example 1 described later.

[0108] [Reference Comparative Example 1] Tobacco powder was prepared in the same manner as in Reference Example 1. Using the tobacco powder as the tobacco raw material, a tobacco sheet was manufactured by a rolling method. Specifically, 87 parts by weight of the tobacco raw material, 12 parts by weight of glycerin as an aerosol-generating base material, and 1 part by weight of carboxymethyl cellulose as a molding agent were mixed and kneaded in an extrusion molding machine. The kneaded mixture was molded into a sheet using two pairs of metal rolls and dried in a hot air circulating oven at 80°C to obtain a tobacco sheet. The tobacco sheet was shredded into pieces measuring 0.8 mm x 9.5 mm using a shredder. The shredded tobacco sheet was measured for bulkiness in the same manner as in Reference Example 1. The results are shown in Table 2.

[0109] [Table 2]

[0110] As can be seen from the table, the tobacco sheet of Reference Example 1, which is the tobacco sheet according to this embodiment, does not contain a fibrous material. reference The expansion capacity was improved compared to the tobacco sheet of Comparative Example 1. Note that although the tobacco sheet was produced by the rolling method in Reference Example 1, the expansion capacity was also improved when the tobacco sheet was produced similarly by the casting method.

[0111] The following is an embodiment of the present invention. [1] A material for a flavor inhalation article, comprising a mixture of a cellulose-based substrate and nicotine. [2] The material for a flavor inhalation article according to [1], wherein the nicotine is a component supplied from outside the cellulose-based substrate, and at least a portion of the nicotine is present on the surface of the cellulose-based substrate. [3] The material for a flavor inhalation article according to [1] or [2], wherein the nicotine is selected from the group consisting of synthetic nicotine, isolated nicotine, and combinations thereof. [4] The material for a flavor inhalation article according to any one of [1] to [3], wherein the content of the nicotine relative to the entire material for a flavor inhalation article is 2% by weight or more. [5] The material for a flavor inhalation article according to any one of [1] to [4], further comprising menthol. [6] The material for a flavor inhalation article according to [5], wherein the content of the menthol relative to the entire material for the flavor inhalation article is 6% by weight or more. [7] The material for a flavor inhalation article according to any one of [1] to [6], which is in the form of granules or a sheet. [8] The material for a flavor inhalation article according to [7], which is in the form of granules, and the particle size of the granules is 250 μm or more. [9] It is in the form of granules, and the surface area of ​​each granule is 0.1 to 2.5 mm 2 The material for a flavor inhalation article according to [7] or [8],

[10] The material for a flavor inhalation article according to any one of [1] to [9], wherein the nicotine release efficiency per 10 puffs when heated and inhaled at 55°C is 0.6% or more.

[11] The material for a flavor inhalation article according to [5] or [6], wherein the menthol release efficiency per 10 puffs when heated and inhaled at 55°C is 4% or more.

[12] The material for a flavor inhalation article according to any one of [1] to

[11] , which has a nicotine release efficiency of 1.8% or more per 10 puffs when heated and inhaled at 70°C.

[13] The material for a flavor inhalation article according to [5], [6], or

[11] , wherein the menthol release efficiency per 10 puffs when heated and inhaled at 70°C is 7% or more.

[14] A heating type flavor inhalation article, comprising the material for a flavor inhalation article according to any one of [1] to

[13] .

[15] The heating type flavor inhalation article according to

[14] , further comprising a pouch containing the material for the flavor inhalation article.

[16] The heated flavor inhalation article according to

[15] , wherein the pouch is a nonwoven fabric pouch.

[17] A method for producing a material for a flavor inhalation article according to any one of [1] to

[13] , providing the cellulosic substrate and the nicotine; and The method for producing the material for a flavor inhalation article includes a step of supplying the nicotine from outside the cellulose-based substrate and applying at least a portion of the nicotine to the surface of the cellulose-based substrate.

[0112] (1) A tobacco sheet for a non-combustion heating type flavor inhaler, comprising a fibrous material. (2) The tobacco sheet for a non-combustion heating-type flavor inhaler according to (1), wherein the ratio of the fibrous material contained in 100% by weight of the tobacco sheet is 5 to 50% by weight. (3) The tobacco sheet for a non-combustion heating-type flavor inhaler according to (1) or (2), wherein the fibrous material is at least one selected from the group consisting of fibrous pulp, fibrous tobacco material, and fibrous synthetic cellulose. (4) The tobacco sheet for a non-combustion heating-type flavor inhaler according to (3), wherein the fibrous material is fibrous pulp. (5) The tobacco sheet for a non-combustion heating-type flavor inhaler according to (4), wherein the tobacco sheet further contains a tobacco raw material. (6) The tobacco sheet for a non-combustion heating type flavor inhaler according to (5), wherein the tobacco raw material is at least one type of tobacco powder selected from the group consisting of leaf tobacco, midrib, and stem residue. to. (7) The tobacco sheet for a non-combustion heating-type flavor inhaler according to (5) or (6), wherein the tobacco raw material is contained in 100% by weight of the tobacco sheet at a ratio of 30 to 91% by weight. (8) The tobacco sheet for a non-combustion heating-type flavor inhaler according to any one of (4) to (7), wherein the tobacco sheet further comprises a molding agent. (9) The tobacco sheet for a non-combustion heating-type flavor inhaler according to (8), wherein the molding agent is at least one selected from the group consisting of polysaccharides, proteins, and synthetic polymers. (10) The tobacco sheet for a non-combustion heating-type flavor inhaler according to (8) or (9), wherein the proportion of the molding agent contained in 100% by weight of the tobacco sheet is 0.1 to 15% by weight. (11) The tobacco sheet for a non-combustion heating-type flavor inhaler according to any one of (1) to (10), wherein the tobacco sheet further comprises an aerosol-generating substrate. (12) The tobacco sheet for a non-combustion heating-type flavor inhaler according to (11), wherein the aerosol-generating base material is at least one selected from the group consisting of glycerin, propylene glycol, and 1,3-butanediol. (13) A tobacco sheet for a non-combustion heating-type flavor inhaler according to (11) or (12), wherein the aerosol-generating substrate is contained in 100% by weight of the tobacco sheet at a ratio of 5 to 50% by weight. (14) A non-combustion heating type flavor inhaler comprising a tobacco-containing segment containing the tobacco sheet for a non-combustion heating type flavor inhaler according to any one of (1) to (13). (15) A non-combustion heating type flavor inhaler according to (14), a heating device for heating the tobacco-containing segment; A non-combustion heating type flavor inhalation system. [Explanation of symbols]

[0113] 10 Heating device 11 Body 12 Heater 20 Non-combustion heating type flavor inhalation product 20A Smoking Segment 20B Connecting part 20C filter section 21 Smoking composition sheets or materials derived therefrom 22 Rapper 23 Paper tube 24 Ventilation hole section 25 First Segment 25a 1st packed bed 25b inner plug wrapper 26 Second Segment 26a 2nd packed bed 26b Inner plug wrapper 27 Outer plug wrapper 28 Rapper

Claims

1. A sheet for non-combustion heating flavor inhalation articles, comprising a mixture of a non-tobacco-derived cellulose-based substrate, nicotine, a fibrous material other than tobacco material, and a molding agent, The sheet for non-combustion heating type flavor inhalation article contains 0.1 to 80% by weight of the non-tobacco-derived cellulose-based substrate, 5 to 50% by weight of a fibrous material other than the tobacco material, The molding agent is contained in an amount of 0.1 to 15% by weight. A sheet for non-combustion heating type flavor inhalation products.

2. 2. The sheet for flavor inhalation articles according to claim 1, wherein the ratio of the fibrous material contained in 100% by weight of the sheet is 10 to 50% by weight.

3. A smoking segment comprising the sheet according to claim 1 or 2. A non-combustion heating type flavor inhalation article comprising:

4. The non-combustion heating type flavor inhalation article according to claim 3; a heating device for heating the smoking segment; A non-combustion heating type flavor inhalation system.

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