Flavor material, method for producing same, and smoking article

Abstract

This flavor material includes a tobacco raw material, a starch, a binder containing an acid that is permitted as a food, and an aerosol source.

Description

Flavoring material, its manufacturing method, and smoking article

[0001] The present invention relates to flavor materials, methods for their production, and smoking articles.

[0002] Known methods for producing reconstituted tobacco material using tobacco leaves as a raw material include, for example, a method for producing a reconstituted tobacco sheet by a papermaking process, a method for producing a reconstituted tobacco sheet by a slurry (cast) process, a method for producing a reconstituted tobacco sheet by a rolling process, and a method for producing tobacco material in any form other than a sheet by an extrusion molding process. In any molding process other than a papermaking process, a binder is required to be able to form the material into a sheet and to maintain its structure.

[0003] Various binders are known, including polysaccharides, proteins, and synthetic polymers (see, for example, Patent Document 1). Typical examples of reconstituted tobacco sheets that require a binder include slurry sheets and rolled sheets. Slurry sheets are obtained by spreading a slurry prepared to a moisture content of 80-90% by weight onto a heated plate in a thin crepe-like shape and then drying it. Known binders used in this process include gum-based binders such as guar gum and locust bean gum (see, for example, Patent Document 2). Rolled sheets are formed by pressing and stretching dough with a moisture content of 30-40% by weight like pasta. Known binders used in this process include cellulose-based binders (see, for example, Patent Document 3).

[0004] Recently, there has been an increasing demand for reconstituted tobacco materials for use in non-combustion heating smoking articles. Reconstituted tobacco materials are produced by combining tobacco raw materials, aerosol formers, binders, etc., through the aforementioned process. During this process, binders such as chemically modified celluloses, gums, starches (Patent Documents 4, 5, and 7), and diammonium hydrogen phosphate (Patent Document 6) are added.

[0005] International Publication No. 2022 / 071570 International Publication No. 2021 / 008828 U.S. Patent No. 4,768,527 International Publication No. 2018 / 141461A1 Patent No. 6,218,803 Patent No. 5,976,637 International Publication No. 1986 / 000504

[0006] In many cases, flavor materials are used after secondary processing such as cutting. If the flavor material has low strength, secondary processing becomes difficult. In view of this situation, an object of the present invention is to provide a flavor material with high strength.

[0007] The inventors have found that the above-mentioned problems can be solved by using a specific binder. That is, the above-mentioned problems are solved by the following inventions. Aspect 1: A flavor material comprising: a tobacco raw material; a binder comprising starch and a food-acceptable acid; and an aerosol source. Aspect 2: The flavor material of Aspect 1, wherein the acid is a polyfunctional organic acid. Aspect 3: The flavor material of Aspect 2, wherein the acid is citric acid. Aspect 4: The flavor material of any of Aspects 1 to 3, wherein the amount of the binder is 15% by weight or less based on the weight of the flavor material. Aspect 5: The flavor material of any of Aspects 1 to 4, which is in the form of a reconstituted tobacco sheet. Aspect 6: The flavor material of any of Aspects 1 to 5, comprising 0.1 to 7% by weight of an ammonium salt. Aspect 7: A non-combustion-heated smoking article comprising the flavor material of any of Aspects 1 to 6. Aspect 8. The method for producing a flavor material according to any one of Aspects 1 to 7, comprising: preparing a binder by mixing the starch and a food-acceptable acid; and mixing the binder with the tobacco raw material.

[0008] A flavor material with high intensity can be provided.

[0009] FIG. 1 shows an embodiment of a non-combustion heating type smoking article. FIG. 2 shows an embodiment of a non-combustion heating type smoking system.

[0010] In this disclosure, "X to Y" includes the end values ​​X and Y. 1. Flavoring Materials Flavoring materials are materials used in smoking articles. Examples of flavoring materials include shreds, sheets, strands, granules, etc. The flavoring material is preferably a reconstituted tobacco sheet.

[0011] (1) Binder: A binder is a material that binds the raw materials of a flavor material. The binder can improve the strength of the flavor material. In this embodiment, a binder containing starch and a food-acceptable acid is used. The binder improves the strength of the flavor material, especially the tensile strength when the flavor material is in a sheet form. The binder also increases the viscosity of the flavor material.

[0012] Starch is a starch represented by the general formula (C ６ H １０ O ５ In view of the moldability and availability, the starch is preferably selected from the group consisting of waxy corn starch, hydroxypropyl starch, and a combination thereof.

[0013] Food-acceptable acids are organic or inorganic acids typically used in the food industry. When used with starch, these acids enhance the intensity of flavor materials. The mechanism is not limited, but it is believed that the acid reacts with starch to form an ester, resulting in the formation of a high molecular weight product.

[0014] The acid is preferably a polyfunctional organic acid. A polyfunctional organic acid is an organic acid having multiple carboxyl groups. The polyfunctional organic acid is preferably selected from the group consisting of citric acid, gluconic acid, fumaric acid, adipic acid, and succinic acid, and more preferably citric acid. The weight ratio of the acid to the starch is preferably 1 / 100 to 1 / 10.

[0015] The binder may further contain a chemically modified cellulose in addition to starch and the acid. From the viewpoints of moldability and availability, the chemically modified cellulose is preferably hydroxyalkyl cellulose, carboxyalkyl cellulose, or alkyl cellulose, and more preferably carboxymethyl cellulose (CMC).

[0016] The amount of binder in the flavor material is preferably 0.1% by weight or more, more preferably 1% by weight or more. There is no upper limit, but it is preferably 15% by weight or less, more preferably 10% by weight or less. In this disclosure, unless otherwise specified, the content is based on bone dry weight (dry basis).

[0017] (2) Alkaloid The flavor material may contain an alkaloid. An example of an alkaloid is nicotine. The amount of nicotine in the flavor material may be any amount known in the art, but is preferably 0.02 to 6% by weight, more preferably 0.04 to 4% by weight. The nicotine may be extracted from a natural product or synthesized.

[0018] (3) Tobacco Raw Materials Flavor materials include tobacco raw materials. Tobacco raw materials are materials derived from plants of the genus Nicotiana. Specific tobacco raw materials include tobacco shreds, tobacco powder, tobacco sheets, and tobacco strands, which are commonly used in the art. These may be used alone or in combination.

[0019] Suitable tobacco leaf materials for use as tobacco raw materials include species of the genus Nicotiana, such as Tabacum and Rustica. While the variety is not limited, known varieties such as burley and flue-cured tobacco can be used. One or more of these tobacco leaf varieties can be mixed and used. The mixture can be a blend of the aforementioned varieties to achieve the desired flavor.

[0020] The amount of tobacco raw material in the flavor material is preferably 5 to 95% by weight, more preferably 25 to 80% by weight, where the weight is on a dry basis as described above.

[0021] Furthermore, tobacco extracts (components other than the medium used for extraction) obtained by extracting active ingredients from extractable materials such as tobacco leaves or tobacco shreds can also be used as tobacco raw materials. Extraction can be carried out using known methods, including, for example, the following: 1) a method in which the extractable material is subjected to extraction using a medium to obtain a tobacco extract; 2) a method in which the extractable material is heated with a medium and the generated vapor is collected to obtain a tobacco extract; and 3) a method in which the heated medium is vaporized and passed through the extractable material and the vapor collected after passing through the extractable material to obtain a tobacco extract. Examples of the medium include water, hydrophilic organic solvents such as alcohol, and combinations thereof, but the medium is preferably water or contains water. The extractable material may be in the form of shreds or powder.

[0022] (4) Non-Tobacco Ingredients: A portion of the tobacco ingredients contained in the flavor material may be replaced with non-tobacco ingredients. Non-tobacco ingredients are materials derived from plants other than the Nicotiana species. Examples of plants other than the Nicotiana species include tea leaves and herbs.

[0023] (5) Aerosol Source The aerosol source is a material that generates an aerosol by vaporizing through heating and cooling, or by atomizing. The flavor material contains the aerosol source, enabling a sufficient amount of smoke to be achieved. Known aerosol sources can be used, including, for example, glycerin, vegetable glycerin, polyhydric alcohols such as propylene glycol (PG), triethyl citrate (TEC), and triacetin. The amount of the aerosol source in the flavor material is preferably 3 to 30% by weight, more preferably 9 to 15% by weight. If the amount of the aerosol source exceeds the upper limit, stains may occur on the tobacco segments, while if it is below the lower limit, the perceived smoke intensity may be reduced.

[0024] (6) Ammonium Salt The flavor material may contain 0.1 to 7% by weight of an ammonium salt. The ammonium salt has the function of improving dispersibility when mixing with tobacco raw materials. In one embodiment, the ammonium salt is selected from the group consisting of ammonium sulfate, ammonium chloride, diammonium hydrogen phosphate, and combinations thereof. The inclusion of the ammonium salt provides an effect on the smoking taste, such as a fragrant smoking taste.

[0025] (7) Non-Tobacco Flavoring Agents The flavoring materials may further include non-tobacco flavoring agents. Non-tobacco flavoring agents are flavoring agents that are not derived from tobacco. Examples of non-tobacco flavoring agents include flavoring agents, cooling agents, and combinations thereof. Known flavoring agents and cooling agents may be used.

[0026] In particular, the following can be used as flavoring agents, either alone or in combination: acetanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise oil, apple juice, Peru balsam oil, beeswax absolute, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil, carob absolute, β-carotene, carrot juice, L-carvone, β-caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, cinnamyl alcohol, cinnamyl cinnamate, citronella oil, DL-citronellol, and clary sage extract. Lacto, cocoa, coffee, konjac oil, coriander oil, cumin aldehyde, davana oil, δ-decalactone, γ-decalactone, decanoic acid, dill herb oil, 3,4-dimethyl-1,2-cyclopentanedione, 4,5-dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 3,7-dimethyl-6-octenoic acid, 2,3-dimethylpyrazine, 2,5-dimethylpyrazine, 2,6-dimethylpyrazine, ethyl 2-methylbutyrate, ethyl acetate, ethyl butyrate, ethyl hexanoate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl octanoate, ethyl oleate, ethyl palmitate, ethyl phenylacetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin, ethyl vanillin glucoside, 2-ethyl-3,(5 or 6)-dimethylpyrazine, 5-ethyl-3-hydroxy-4-methyl-2(5H)-furanone, 2-ethyl-3-methylpyrazine, eucalyptol, fenugreek absolute, gene absolute, gentian root infusion, geraniol, geranyl acetate, grape juice, guaiacol, guava extract, gamma-heptalactone, gamma-hexalactone, hexanoic acid, cis-3-hexen-1-ol, hexyl acetate, hexyl alcohol, phenylhexyl acetate, honey, 4-hydroxy-3-pentenoic acid, lauryl methylpropional Ingredients: methicone, 4-hydroxy-4-(3-hydroxy-1-butenyl)-3,5,5-trimethyl-2-cyclohexen-1-one, 4-(para-hydroxyphenyl)-2-butanone, sodium 4-hydroxyundecanoate, immortelle absolute, beta-ionone, isoamyl acetate, isoamyl butyrate, isoamyl phenylacetate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute, cola nut tincture, labdanum oil, lemon terpeneless oil, licorice extract, linalool, linalyl acetate, robertia jasmine Orris root oil, maltol, maple syrup, menthol, menthone, L-menthyl acetate, para-methoxybenzaldehyde, methyl 2-pyrrolyl ketone, methyl anthranilate, methyl phenylacetate, methyl salicylate, 4'-methylacetophenone, methylcyclopentenolone, 3-methylvaleric acid, mimosa absolute, honey, myristic acid, nerol, nerolidol, gamma-nonalactone, nutmeg oil, delta-octalactone, octanal, octanoic acid, orange flower oil, orange oil, orris root oil, palmitic acid, omega-pentadeca Calactone, peppermint oil, petitgrain Paraguay oil, phenethyl alcohol, phenethyl phenylacetate, phenylacetic acid, piperonal, plum extract, propenylguaethol, propyl acetate, 3-propylidenephthalide, prune juice, pyruvic acid, raisin extract, rose oil, rum, sage oil, sandalwood oil, spearmint oil, styrax absolute, marigold oil, tea distillate, α-terpineol, terpinyl acetate, 5,6,7,8-tetrahydroquinoxaline, 1,5,5,9-tetramethyl-13-oxacyclo(8.3.0.0(4.9))tridecane, 2,3,5,6-tetramethylpyrazine, thyme oil, tomato extract, 2-tridecanone, triethyl citrate, 4-(2,6,6-trimethyl-1-cyclohexenyl)2-buten-4-one, 2,6,6-trimethyl-2-cyclohexene-1,4-dione, 4-(2,6,6-trimethyl (1,3-cyclohexadienyl)2-buten-4-one, 2,3,5-trimethylpyrazine, γ-undecalactone, γ-valerolactone, vanilla extract, vanillin, veratraldehyde, violet leaf absolute, N-ethyl-p-menthane-3-carboxamide (WS-3), ethyl-2-(p-menthane-3-carboxamide)acetate (WS-5).

[0027] (8) Others The flavor material may contain a reinforcing material such as fiber or pulp in addition to the above. The amount of the reinforcing material may be a known amount, but is preferably 1 to 10% by weight of the flavor material. The flavor material may also contain water. When the flavor material contains water, the amount is preferably 10 to 50 parts by weight per 100 parts by weight of the active ingredient of the flavor material. The active ingredient refers to an ingredient other than water.

[0028] (9) Form The flavor material may be in various forms, as described above. However, it is preferable that the flavor material be a reconstituted tobacco material, as this is suitable as a flavor source for non-combustion heating smoking articles. The reconstituted tobacco material is a material produced by preparing a mixture containing tobacco raw materials and the binder as essential components, and then subjecting this to papermaking, casting, rolling, extrusion, or the like. The reconstituted tobacco material is preferably in the form of a sheet, i.e., a reconstituted tobacco sheet.

[0029] The acid and starch that make up the binder are pre-mixed before being mixed with the tobacco raw material. Pre-mixing the starch and the acid causes an esterification reaction between the acid and the starch. As a result, as described above, it is believed that the strength of the flavor material is improved.

[0030] 2. Method for Producing Flavor Material The flavor material can be produced by mixing a binder, tobacco raw material, an aerosol source, and, if necessary, other ingredients, and then molding the mixture. As described above, the flavor material is preferably produced by a method including a step of preparing the binder by mixing starch and the acid. A preferred production method will be described below using, as an example, a flavor material containing tobacco raw material, a binder containing starch and the acid, an aerosol source, a reinforcing material, and water. To promote the reaction, the production method preferably includes a step of placing the mixture containing starch and the acid, or the mixture containing starch and the acid, in an environment of 40°C to 100°C.

[0031] [Preferred embodiment 1] Step 1: Mix starch, the acid, an aerosol source, and water to obtain mixture 1. Step 2: Mix a tobacco raw material and a reinforcing material to obtain mixture 2. Step 3: Mix mixtures 1 and 2 to obtain a flavor material.

[0032] [Preferred embodiment 2] Step 1: Starch and the acid are mixed to obtain mixture 1. Step 2: An aerosol source and water are mixed into mixture 1 to obtain mixture 2. Step 3: A tobacco raw material and a reinforcing material are mixed into mixture 2 to obtain a flavor material.

[0033] [Preferred embodiment 3] Step 1: Starch and the acid are mixed to obtain mixture 1. Step 2: An aerosol source, water, a tobacco raw material, and a reinforcing material are mixed into mixture 1 to obtain a flavor material.

[0034] As mentioned above, the flavor material is preferably a reconstituted tobacco sheet, and therefore a method for producing the sheet will be described.

[0035] <Rolling Method> Examples of methods for producing a reconstituted tobacco sheet by rolling include methods comprising the following steps: 1) obtaining a flavor material by any of the above-mentioned preferred aspects 1 to 3; 2) feeding the flavor material into rolling rollers and rolling it; and 3) drying the rolled product in a dryer. When producing a sheet by this method, the surfaces of the rolling rollers may be heated or cooled, and the rotation speed of the rolling rollers may be adjusted, depending on the purpose. The spacing between the rolling rollers may also be adjusted. One or more rolling rollers may be used to obtain a sheet with the desired basis weight. The blending ratio of the raw materials is appropriately adjusted to obtain a flavor material suitable for rolling.

[0036] <Casting Method> For example, a method including the following steps can be mentioned: 1) A step of obtaining a flavor material by any of the above-mentioned preferred aspects 1 to 3. 2) A step of thinly spreading (casting) the flavor material and drying it. When producing a sheet by this method, a step of removing some components such as nitrosamines by irradiating the slurry with ultraviolet light or X-rays may be added. The blending ratio of the raw materials is appropriately adjusted to obtain a flavor material suitable for casting.

[0037] 3. Non-Combustion Heat-Activated Smoking Articles Flavor materials are suitable for non-combustion heat-activating smoking articles. FIG. 1 shows one embodiment of a non-combustion heat-activating smoking article. As shown in the figure, the non-combustion heat-activating smoking article 20 comprises a tobacco segment 20A, a cylindrical cooling section 20B having perforations on its circumference, and a filter section 20C. The non-combustion heat-activating smoking article 20 may also include other components. The axial length of the non-combustion heat-activating smoking article 20 is not limited, but is preferably 40 to 90 mm. The circumferential length of the non-combustion heat-activating smoking article 20 is preferably 16 to 25 mm. For example, the tobacco segment 20A may be 20 mm long, the cooling section 20B may be 20 mm long, and the filter section 20C may be 7 mm long. The lengths of these individual components can be appropriately modified depending on manufacturing suitability, required quality, and the like. While FIG. 1 shows an embodiment in which a first segment 25 is provided, it is also possible to omit the first segment 25 and provide only a second segment 26 downstream of the cooling section 20B.

[0038] 1) Tobacco Segment 20A The tobacco filler 21 in the tobacco segment 20A preferably contains the flavor material, and more preferably consists of the flavor material. The method for filling the tobacco filler 21 into the wrapper 22 is not particularly limited; for example, the tobacco filler 21 may be wrapped in the wrapper 22, or the tobacco filler 21 may be filled into a tubular wrapper 22. When the tobacco filler is a strand obtained by shredding a reconstituted tobacco sheet, the tobacco filler may be filled so that its longitudinal direction is in an unspecified direction within the wrapper 22, or may be aligned in the axial direction of the tobacco segment 20A or in a direction perpendicular to the axial direction. When the tobacco segment 20A is heated, the tobacco components, aerosol source, and water contained in the tobacco filler 21 vaporize and are available for inhalation.

[0039] 2) Cooling Section 20B The cooling section 20B is preferably configured as a tubular member. The tubular member may be, for example, a cardboard tube 23 formed by processing cardboard into a cylindrical shape. The cooling section 20B may also be formed from a sheet of thin material that is wrinkled and then pleated, gathered, or folded to form channels. Known materials such as polyethylene can be used as such a material. The cooling section 20B is preferably provided with perforations 24.

[0040] The cooling portion 20B may be rod-shaped with an axial length of, for example, 7 to 28 mm. The cooling portion 20B may have a substantially circular axial cross section with a diameter of 5 to 10 mm.

[0041] 3) Filter Section 20C The configuration of the filter section 20C is not particularly limited, but may be composed of one or more packed layers. The outside of the packed layers may be wrapped with one or more wrapping papers.

[0042] The circumferential length of filter portion 20C is not particularly limited, but is preferably 16 to 25 mm. The axial length of filter portion 20C (the horizontal direction in FIG. 1) can be selected from the range of 4 to 10 mm. Fragrance-containing breakable capsules, fragrance beads, or fragrance may be directly added to filter portion 20C.

[0043] The filter section 20C may include a center hole section as the first segment 25. The center hole section is composed of a first packed layer 25a having one or more hollow sections and an inner plug wrapper (inner wrapping paper) 25b that covers the packed layer. The filter section 20C may include a second segment 26. The second segment 26 is composed of a second packed layer 26a and an inner plug wrapper (inner wrapping paper) 26b that covers the packed layer. The second packed layer 26a may be composed of, for example, cellulose acetate fibers.

[0044] The first filling layer 25a and the second filling layer 26a are connected by an outer plug wrapper (outer cigarette paper) 27. The tobacco segment 20A, the cooling section 20B, and the connected first filling layer 25a and second filling layer 26a are connected by a mouthpiece lining paper 28.

[0045] A combination of a non-combustion heated smoking article and a heating device for generating aerosol is also referred to as a non-combustion heated smoking system. An example of such a system is shown in Fig. 2. In the figure, the non-combustion heated smoking system includes a non-combustion heated smoking article 20 and a heating device 10 that heats a tobacco segment 20A from the outside.

[0046] The heating device 10 comprises a body 11, a heater 12, a metal tube 13, a battery unit 14, and a control unit 15. The body 11 has a cylindrical recess 16, and the heater 12 and metal tube 13 are disposed at positions corresponding to the tobacco segment 20A to be inserted therein. The heater 12 may be an electric resistance heater. While the figure shows a mode in which the heating device 10 heats the tobacco segment 20A from the outside, it may also heat from the inside. The heating temperature of the heating device 10 is not particularly limited, but is preferably 400°C or less, more preferably 150 to 400°C, and even more preferably 200 to 350°C. The heating temperature refers to the temperature of the heater of the heating device 10. Alternatively, a susceptor may be disposed within the tobacco segment 20A, and the tobacco segment 20A may be heated using an induction heating method.

[0047] Preferred embodiments are described below. Aspect 1: A flavor material comprising: a tobacco raw material; a binder comprising a starch and a food-acceptable acid; and an aerosol source. Aspect 2: The flavor material of Aspect 1, wherein the acid is a polyfunctional organic acid. Aspect 3: The flavor material of Aspect 2, wherein the acid is citric acid. Aspect 4: The flavor material of any of Aspects 1 to 3, wherein the amount of the binder is 15% by weight or less, based on the weight of the flavor material. Aspect 5: The flavor material of any of Aspects 1 to 4, in the form of a reconstituted tobacco sheet. Aspect 6: The flavor material of any of Aspects 1 to 5, wherein the flavor material comprises 0.1 to 7% by weight of an ammonium salt. Aspect 7: A non-combustion-heated smoking article comprising the flavor material of any of Aspects 1 to 6. Aspect 8: A method for producing the flavor material of any of Aspects 1 to 7, comprising: mixing the starch and a food-acceptable acid to prepare a binder; and mixing the binder with the tobacco raw material.

[0048] The materials shown in the table below were prepared, and the materials were subjected to a manufacturing method comprising the following steps to produce a reconstituted tobacco sheet. Unless otherwise specified, all steps were carried out at room temperature. Step 1: Waxy cornstarch, citric acid, glycerin, and water were mixed to obtain mixture 1. Step 2: Tobacco fine powder and pulp were mixed to obtain mixture 2. Step 3: Mixtures 1 and 2 were mixed and kneaded using the following kneading machine. Step 4: The kneaded mixture was rolled using a rolling roller, and then dried at 80°C to obtain a reconstituted tobacco sheet. Kneading machine: Single Dome Gran DG / L1 (manufactured by Dalton Co., Ltd.) Rolling roller: Yuri Roll (manufactured by Yuri Roll Co., Ltd.)

[0049]

[0050] The tensile strength of the reconstituted tobacco sheets produced as described above was measured by the following method. The results are shown in Table 2. Tensile strength measuring device: Zwick Roell Test Xpert III Sample shape: 250 mm x 50 mm Chuck distance: 180 mm Pulling speed: 20 mm / min Number of tests: 5 (the average value was taken as the tensile strength).

[0051]

[0052] The reconstituted tobacco sheets of Examples 1 and 2, which contained citric acid, had higher tensile strength than the reconstituted tobacco sheets of Comparative Examples 1 and 2, which did not contain citric acid. This indicates that a binder containing starch and citric acid can improve the tensile strength of reconstituted tobacco sheets.

[0053] REFERENCE SIGNS LIST 10 Heating device 11 Body 12 Heater 13 Metal tube 14 Battery unit 15 Control unit 16 Recess 17 Ventilation hole 20 Non-combustion heating smoking article 20A Tobacco segment 20B Cooling section 20C Filter section 21 Tobacco filler 22 Cigarette paper 23 Paper tube 24 Perforation 25 First segment 25a First filling layer 25b Inner plug wrapper 26 Second segment 26a Second filling layer 26b Inner plug wrapper 27 Outer plug wrapper 28 Lining paper

Claims

1. A tobacco raw material, a binder including a starch and a food-acceptable acid, and a flavor material including an aerosol source.

2. The flavor material of claim 1, wherein the acid is a polyfunctional organic acid.

3. The flavor material of claim 2, wherein the acid is citric acid.

4. The flavor material of any one of claims 1 to 3, wherein the amount of the binder is 15% by weight or less, based on the weight of the flavor material.

5. The flavor material according to any one of claims 1 to 4, which is in the form of a reconstituted tobacco sheet.

6. The flavor material according to any one of claims 1 to 5, comprising 0.1 to 7% by weight of an ammonium salt.

7. A non-combustion heating type smoking article comprising the flavor material according to any one of claims 1 to 6.

8. A method for producing a flavor material according to any one of claims 1 to 7, comprising: a step of preparing a binder by mixing the starch with a food-acceptable acid; and a step of mixing the binder with the tobacco raw material.

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