Non-combustion heated tobacco and electrically heated tobacco product

Abstract

This non-combustion heated tobacco comprises a tobacco rod part and a mouthpiece part. The tobacco rod part has a composite sheet having a tobacco sheet layer that contains at least one component selected from water and glycerin and having a permeation reduction layer that is capable of reducing permeation of the component.

Description

Non-combustion heated tobacco products and electric heated tobacco products

[0001] This invention relates to non-combustion heated tobacco products and electrically heated tobacco products.

[0002] In recent years, electric heated tobacco products have been developed as an alternative to cigarettes (paper-wrapped cigarettes), consisting of non-combustion heated tobacco that is inserted into an electric heating device (Patent Document 1). This non-combustion heated tobacco generally comprises a tobacco rod, which is made of tobacco shreds or materials that generate flavor components wrapped in rolling paper, and a mouthpiece for inhaling the components generated from the tobacco rod by heating. Generally, in electric heated tobacco products, after inserting the non-combustion heated tobacco into the electric heating device, a heater element is heated, and the tobacco rod is heated starting from the point of contact with the heater element, and the generated components are delivered to the user.

[0003] Special Publication No. 2015-508676

[0004] In the field of non-combustion heated tobacco products, development has been carried out with diverse objectives, including the development of compositions and materials to achieve good flavor delivery. However, development focused on suppressing charring that can occur when heating non-combustion heated tobacco products has not been very active. When non-combustion heated tobacco products are heated, charring may occur on components such as heaters surrounding the product. This charring not only deteriorates the appearance but also causes problems such as a decrease in the efficiency and stability of heat conduction and the addition of undesirable components to the delivered components. Therefore, it has been desirable to suppress the occurrence of charring in non-combustion heated tobacco products. Accordingly, the object of the present invention is to provide a non-combustion heated tobacco product that can suppress the migration of charring-causing components contained in the tobacco material to components surrounding the tobacco material, and an electrically heated tobacco product using the non-combustion heated tobacco product.

[0005] As a result of diligent research, the inventors of the present invention discovered that the above problems could be solved by providing a specific sheet, and thus arrived at the present invention.

[0006] [1] A non-combustion heated tobacco device comprising a tobacco rod portion and a mouthpiece portion, wherein the tobacco rod portion has a composite sheet having a tobacco sheet layer containing at least one component selected from water and glycerin, and a permeability reducing layer capable of reducing the permeability of the component. [2] The non-combustion heated tobacco device according to [1], wherein the composite sheet satisfies the following (condition 1-1). (Condition 1-1) When the following (operation 1-1) or (operation 1-1'), (operation 2-1), and (operation 3-1) are performed using the composite sheet, state A-1 in the following (operation 3-1) is not observed. (operation 1-1) Prepare an aluminum foil with a thickness of 12 μm or less and a heater, and arrange the aluminum foil, the heater, and the composite sheet so that the aluminum foil is sandwiched adjacent to the first surface of the composite sheet on the side where the permeability reducing layer is present relative to the tobacco sheet layer and the heater. (Operation 1-1') Prepare the heater and arrange the heater and the composite sheet so that the surface of the composite sheet on the side where the transmission reduction layer is present is adjacent to the heater relative to the tobacco sheet layer. (Operation 2-1) Heat the heater in a temperature range of 335°C or higher and 365°C or lower and hold for 300 seconds. (Operation 3-1) After the above heat treatment, observe the aluminum foil in (Operation 1-1) or the heater in (Operation 1-1') and check whether the following condition A-1 is observed. Condition A-1: ​​A state in which solid matter with a maximum height of 100 μm or more is attached to the aluminum foil in (Operation 1-1) or the heater in (Operation 1-1'). [3] The non-combustion heated tobacco according to [2], wherein the composite sheet satisfies the following (condition 1-1'). (Condition 1-1') When the above (operation 1-1) or (operation 1-1'), (operation 2-1), and (operation 3-1) are performed using the composite sheet, the following condition B-1 is not observed. Condition B-1: In the image of the aluminum foil in (operation 1-1) or the heater in (operation 1-1'), when the contact area of ​​the composite sheet is 100%, the area of ​​the portion where the sum of RGB values ​​is less than or equal to (sum of RGB values ​​of the blank portion - 100) is 1% or more.[4] The non-combustible heated tobacco according to any one of [1] to [3], wherein the permeation-reducing layer is a layer comprising at least one selected from shellac, calcium carbonate, sodium silicate, cellulose, and activated carbon, or a metal foil. [5] The non-combustible heated tobacco according to any one of [1] to [4], wherein the composite sheet has an adhesive layer between the tobacco sheet layer and the permeation-reducing layer. [6] The non-combustible heated tobacco according to [5], wherein the adhesive layer comprises at least one component selected from the group consisting of hydroxypropyl cellulose (HPC) and polyvinyl acetate. [7] The non-combustible heated tobacco according to any one of [1] to [6], wherein the basis weight of the permeation-reducing layer is 6 gsm or more and 700 gsm or less. [8] The non-combustible heated tobacco according to any one of [1] to [7], wherein the thickness of the permeation-reducing layer is 0.05 mm or more and 1 mm or less. [9] The non-combustion heated tobacco product according to any one of [1] to [8], wherein the composite sheet is cylindrical in shape, and is arranged such that the axial direction of the cylindrical shape and the ventilation direction are substantially parallel, and the first surface of the composite sheet on the side where the permeability reduction layer is present is the inner or outer surface relative to the tobacco sheet.

[10] An electric heated tobacco product comprising: an electric heating device comprising a heater member, a battery unit which is a power source for the heater member, and a control unit for controlling the heater member; and a non-combustion heated tobacco product according to any one of [1] to [9] which is inserted so as to be in contact with the heater member and the first surface of the composite sheet.

[11] The non-combustion heated tobacco product according to

[10] , wherein, when the ratio of the area of ​​the area in contact between the heater and the tobacco rod portion is taken as 100%, the area of ​​the area in contact between the heater and the first surface of the composite sheet is 50% or more.

[12] A non-combustion heated tobacco product comprising a tobacco rod portion and a mouthpiece portion, wherein the tobacco rod portion has an absorbent tobacco sheet containing at least one component selected from water and glycerin and an absorbent, and the content of the absorbent in the absorbent tobacco sheet is 50% by weight or more.

[13] The non-combustion heated tobacco product according to

[12] , wherein the absorbent comprises at least one selected from the group consisting of calcium carbonate, sodium silicate, and activated carbon.

[14] A non-combustion heated tobacco product according to

[12] or

[13] , wherein the absorbent tobacco sheet satisfies the following (condition 1-2). (Condition 1-2) When the following (operation 1-2) or (operation 1-2'), (operation 2-2), and (operation 3-2) are performed using the absorbent tobacco sheet, state A-2 in the following (operation 3-2) is not observed. (operation 1-2) Prepare an aluminum foil with a thickness of 12 μm or less and a heater, and arrange the aluminum foil, the heater, and the absorbent tobacco sheet so that the aluminum foil is sandwiched between the absorbent tobacco sheet and the heater. (operation 1-2') Prepare a heater, and arrange the heater and the absorbent tobacco sheet so that the absorbent tobacco sheet and the heater are adjacent to each other. (operation 2-2) Heat the heater in a temperature range of 335°C or higher and 365°C or lower, and hold for 300 seconds. (Operation 3-2) After the above heat treatment, observe the aluminum foil in (Operation 1-2) or the heater in (Operation 1-2') and check whether the following condition A-2 is observed. Condition A-2: A state in which solid matter with a maximum height of 100 μm or more is attached to the aluminum foil in (Operation 1-2) or the heater in (Operation 1-2').

[15] The non-combustion heated tobacco described in

[14] , wherein the composite sheet satisfies the following condition 2-2'. (Condition 2-2') When the above (Operation 1-2) or (Operation 1-2'), (Operation 2-2), and (Operation 3-2) are performed using the composite sheet, the following condition B-2 is not observed. Condition B-2: In the image of the aluminum foil in (operation 1-2) or the heater in (operation 1-2'), when the composite sheet contact area is 100%, the area of ​​the portion where the sum of RGB values ​​is less than or equal to (sum of RGB values ​​of the blank portion - 100) is 1% or more.

[16] The non-combustion heated tobacco according to any one of

[12] to

[15] , wherein the shape of the absorbent tobacco sheet is cylindrical, and the axial direction of the cylindrical shape is arranged to be substantially parallel to the ventilation direction.

[17] An electric heated tobacco product comprising: an electric heating device comprising a heater member, a battery unit which is a power source for the heater member, and a control unit for controlling the heater member; and a non-combustion heated tobacco according to any one of

[12] to

[16] , which is inserted so as to be in contact with the heater member and the calcium carbonate-containing tobacco sheet.

[18] The non-combustion heated tobacco product according to

[17] , wherein, when the ratio of the area of ​​the area in contact between the heater and the tobacco rod portion is taken as 100%, the area of ​​the area in contact between the heater and the calcium carbonate-containing tobacco sheet is 50% or more.

[0007] The present invention provides a non-combustion heated tobacco product that can suppress the migration of charring-causing components contained in the tobacco material to surrounding materials, and an electrically heated tobacco product using the non-combustion heated tobacco product.

[0008] This is a schematic diagram of a non-combustion heated tobacco product according to an embodiment of the present invention. This is a schematic diagram of an electrically diagram showing one aspect of the shape of a composite sheet. This is a diagram showing one aspect of the shape of a composite sheet. This is a diagram showing the results of the charring evaluation in Experiment 1 (photograph used as a substitute for a drawing). This is a diagram showing the results of the charring evaluation in Experiment 2 (photograph used as a substitute for a drawing). This is a diagram showing the results of the charring evaluation in Experiment 3 (photograph used as a substitute for a drawing). This is a diagram showing the results of the charring evaluation in Experiment 4 (photograph used as a substitute for a drawing).

[0009] The embodiments of the present invention will be described in detail below, but these descriptions are examples (representative examples) of embodiments of the present invention, and the present invention is not limited to these contents unless it exceeds the gist of the invention. In this specification, numerical ranges expressed using "~" mean a range that includes the numbers written before and after "~" as the lower and upper limits, and "A~B" means A or more and B or less. Also, when numerical ranges expressed as "A~B" or "A or more and B or less" are described in steps (for example, in preferred order), the upper and lower limits of each numerical range can be arbitrarily combined. Also, in this specification, the expression "A or B" can be read as "at least one selected from the group consisting of A and B". Also, although multiple embodiments are described in this specification, various conditions in each embodiment can be applied to each other to the extent that they are applicable. Also, some embodiments will be described based on the drawings, but the dimensions, materials, shapes, and relative arrangements of the components shown in the drawings are examples.

[0010] <Non-combustion heated tobacco> A first embodiment of the non-combustion heated tobacco according to the present invention (hereinafter also simply referred to as "the first embodiment") is a non-combustion heated tobacco comprising a tobacco rod portion and a mouthpiece portion, wherein the tobacco rod portion has a composite sheet having a tobacco sheet layer containing at least one component selected from water and glycerin, and a permeability reducing layer that can reduce the permeation of the component.

[0011] A second embodiment of the non-combustion heated tobacco according to the present invention (hereinafter also simply referred to as "the second embodiment") comprises a tobacco rod portion and a mouthpiece portion, wherein the tobacco rod portion has an absorbent tobacco sheet containing at least one component selected from water and glycerin and an absorbent, and the content of the absorbent in the absorbent tobacco sheet is 50% by weight or more.

[0012] The inventors have found that in embodiments where a tobacco sheet is used as the tobacco material in the tobacco rod portion, if the tobacco sheet contains at least one component selected from water and glycerin (hereinafter also referred to as "water and other components"), charring occurs when the portion to which the component adheres is heated. These components are components that can normally be found in known tobacco sheets. For example, if at least one component selected from water and glycerin in the tobacco sheet migrates to and adheres to the heater member of a device that heats non-combustion heated tobacco, charring occurs on the heater member due to heating. Such charring not only deteriorates the appearance but also causes problems such as a decrease in the efficiency and stability of heat conduction and the addition of undesirable components to the delivery components. The present inventors hypothesize that when a tobacco sheet is heated using a heater member, components such as water contained in the tobacco sheet condense on the heater side, and consequently, components soluble in water and other components derived from the tobacco material (hereinafter also referred to as "soluble components") move to the vicinity of the heater. Furthermore, further heating vaporizes the water and other components, leaving carbonized soluble components near the heater, which causes charring. However, as in the configuration of the first embodiment described above, by having a composite sheet having a tobacco sheet layer containing at least one component selected from water and glycerin, and a permeability reduction layer that can reduce the permeation of the said components, or by having a tobacco rod portion having an absorbent material-containing tobacco sheet containing at least one component selected from water and glycerin and an absorbent, wherein the absorbent content in the sheet is 50% by weight or more, the migration and adhesion of at least one component selected from water and glycerin in the tobacco sheet to other members can be suppressed, and charring on the heater member of the device can be suppressed.

[0013] The following describes specific embodiments of non-combustion heated tobacco products. However, the term "non-combustion heated tobacco product," used without making any particular distinction between "the first embodiment" and "the second embodiment," applies to both "the first embodiment" and "the second embodiment." Furthermore, "the first embodiment" and "the second embodiment" may be combined with each other. Specifically, an embodiment may use a tobacco rod portion having both a composite sheet in the first embodiment and an absorbent tobacco sheet in the second embodiment.

[0014] An example of a non-combustion heated tobacco product is shown in Figure 1. The non-combustion heated tobacco product will be described below with reference to Figure 1. The rod-shaped non-combustion heated tobacco product 10 shown in Figure 1 is a rod-shaped non-combustion heated tobacco product comprising a tobacco rod portion 11, a mouthpiece portion 14, and a tip paper 15 formed by winding these together. The configuration of the mouthpiece portion is arbitrary, but in Figure 1, it includes a cooling segment 12 and a filter segment 13 containing a filter material, and the cooling segment 12 is sandwiched adjacent to the tobacco rod portion 11 (in Figure 1, the description of the composite sheet or absorbent material-containing tobacco sheet on the tobacco rod portion is omitted. This is also the case in Figures 2 and 3) and the filter segment 13 with respect to the axial direction (also referred to as the "long axis direction") of the non-combustion heated tobacco product 10, and openings V are provided concentrically in the circumferential direction of the cooling segment 12. The opening V is typically a hole that facilitates the inflow of air from the outside due to the user's inhalation, and this inflow of air can lower the temperature of the components and air flowing in from the tobacco rod portion 11. In the non-combustion heated tobacco 10, components generated by heating the tobacco rod portion 11 etc. pass through the mouthpiece portion and are delivered to the user's mouth. Components generated by heating include, for example, flavor components derived from fragrances, nicotine and tar derived from tobacco leaves, and aerosol components derived from the aerosol base material. In this specification, the aerosol base material is a base material for generating aerosols.

[0015] The non-combustion heated tobacco 10 preferably has a columnar shape that satisfies the following definition of an aspect ratio of 1 or more: Aspect ratio = h / w, where w is the width of the base of the columnar body (in this specification, the width of the base on the tobacco rod side), and h is the height, where h ≥ w is preferred. In this specification, the direction of the major axis is defined as the direction indicated by h. Therefore, even if w ≥ h, the direction indicated by h is conveniently referred to as the major axis. The shape of the base is not limited and may be a polygon, a rounded polygon, a circle, or an ellipse, and the width w is the diameter if the base is circular, the major axis if it is elliptical, or the diameter of the circumscribed circle or the major axis of the circumscribed ellipse if it is a polygon or a rounded polygon. The length h of the major axis of the non-combustion heated tobacco 10 is not particularly limited, for example, it is usually 40 mm or more, preferably 45 mm or more, and more preferably 50 mm or more. Also, it is usually 100 mm or less, preferably 90 mm or less, and more preferably 80 mm or less. The width w of the bottom surface of the columnar body of the non-combustion heated tobacco 10 is not particularly limited, but for example, it is usually 5 mm or more, preferably 5.5 mm or more. Also, it is usually 10 mm or less, preferably 9 mm or less, and more preferably 8 mm or less. The ratio of the length of the cooling segment and the filter segment (cooling segment:filter segment) to the length in the long axis direction of the non-combustion heated tobacco is not particularly limited, but from the viewpoint of the amount of flavor delivered, it is usually 0.60:1.40 to 1.40:0.60, preferably 0.80 to 1.20:0.80 to 1.20, preferably 0.85 to 1.15:0.85 to 1.15, more preferably 0.90 to 1.10:0.90 to 1.10, and even more preferably 0.95 to 1.05:0.95 to 1.05. By keeping the ratio of the lengths of the cooling segment and the filter segment within the above range, a balance can be achieved between the cooling effect, the effect of suppressing losses due to the adhesion of generated vapor and aerosol to the inner wall of the cooling segment, and the filter's air volume and flavor adjustment function, resulting in a good flavor and flavor intensity.In particular, lengthening the cooling segment promotes the atomization of aerosols and other substances, resulting in a better flavor profile. However, if it is too long, substances passing through it will adhere to the inner wall.

[0016] The airflow resistance in the longitudinal direction per non-combustion heated tobacco stick 10 is not particularly limited, but from the standpoint of ease of smoking, it is usually 8 mmH ２ It is 0 or greater, and 10 mmH ２ Preferably, it should be 0 or greater, and 12 mmH ２ It is more preferable that the temperature is 0 or higher, and usually 100 mmH ２ It is less than 0 and 80 mmH ２ Preferably, it should be 0 or less, and 60 mmH ２ It is more preferable that the value be 0 or less. The air permeability resistance is measured according to the ISO standard method (ISO 6565:2015), for example, using a filter air permeability resistance meter manufactured by Cerulean Chemical Industries. The air permeability resistance refers to the pressure difference between the first end face and the second end face when air is flowed from one end face (first end face) to the other end face (second end face) at a predetermined airflow rate (17.5 cc / sec) while air is not permeating the side of the tobacco product 10. The unit is generally mmH ２ Represented by O. The relationship between airflow resistance and the length of tobacco products is known to be proportional within the commonly used length range (5 mm to 200 mm), meaning that if the length doubles, the airflow resistance of the tobacco product doubles as well.

[0017] [Tobacco Rod Section] In the first embodiment, the tobacco rod section 11 is not particularly limited as long as it has a composite sheet comprising a tobacco sheet layer containing at least one component selected from water and glycerin, and a permeability reduction layer capable of reducing the permeability of the component. In the second embodiment, the tobacco rod section is not particularly limited as long as it has an absorbent tobacco sheet containing at least one component selected from water and glycerin and an absorbent, wherein the absorbent content is 50% by weight or more. Other than having this composite sheet or absorbent tobacco sheet, known configurations of tobacco rod sections can be adopted. The form of the tobacco rod section 11 is usually a form in which a tobacco filler is wrapped in rolling paper, and in this embodiment, a composite sheet or an absorbent tobacco sheet is used as one type of tobacco filler.

[0018] Other materials besides composite sheets or absorbent tobacco sheets may be used as tobacco fillers. For example, known materials such as chopped tobacco or reconstituted tobacco sheets can be used. The tobacco filler may also contain an aerosol base material. The aerosol base material is a base material that generates an aerosol when heated, and examples include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof. The content of the aerosol base material in the tobacco filler is not particularly limited, but from the viewpoint of generating sufficient aerosol and imparting a good flavor, it is usually 5% by weight or more, preferably 10% by weight or more, and usually 50% by weight or less, preferably 15% by weight or more and 25% by weight or less, relative to the total amount of the tobacco filler.

[0019] Furthermore, the tobacco rod portion 11 may have a fitting portion for a heater member or the like for heating the tobacco product 10. The tobacco rod portion 11, which is formed by winding tobacco filling with rolling paper, preferably has a columnar shape, and in this case, it is preferable that the aspect ratio, which is expressed as the height of the tobacco rod portion 11 in the longitudinal direction relative to the width of the bottom surface of the tobacco rod portion 11, is 1 or more. The shape of the bottom surface is not limited and may be a polygon, a rounded polygon, a circle, an ellipse, etc., and the width is the diameter if the bottom surface is circular, the major axis if it is elliptical, and the diameter of the circumscribed circle or the major axis of the circumscribed ellipse if it is a polygon or a rounded polygon. The height of the tobacco filling constituting the tobacco rod portion 11 is preferably about 10 to 70 mm and the width is preferably about 4 to 9 mm.

[0020] The length of the tobacco rod portion 11 in the longitudinal direction can be appropriately changed according to the size of the product, but is usually 10 mm or more, preferably 12 mm or more, more preferably 15 mm or more, even more preferably 18 mm or more, and usually 70 mm or less, preferably 50 mm or less, more preferably 30 mm or less, and even more preferably 25 mm or less. Furthermore, the ratio of the length of the tobacco rod portion 11 to the length h in the longitudinal direction of the tobacco product 10 is usually 10% or more, preferably 20% or more, more preferably 25% or more, even more preferably 30% or more, and usually 60% or less, preferably 50% or less, more preferably 45% or less, and even more preferably 40% or less, from the viewpoint of balancing the amount of delivery and the aerosol temperature.

[0021] (Composite Sheet) The composite sheet is not particularly limited as long as it has a tobacco sheet layer containing at least one component selected from water and glycerin, and a permeability reduction layer that can reduce the permeation of the said component. This composite sheet is a component used for the purpose of imparting tobacco material.

[0022] The tobacco sheet layer contains at least one component selected from water and glycerin. As described above, if this component migrates to a component such as a heater, charred components derived from the tobacco material that are soluble in this component remain near the heater, causing charring. As the tobacco sheet layer, for example, a tobacco sheet used as a known tobacco filler can be used, or a sheet in which the amount of at least one component selected from water and glycerin in this tobacco sheet is adjusted can be used. A typical tobacco sheet usually contains at least one component selected from water and glycerin.

[0023] Another embodiment of the present invention includes an embodiment in which the tobacco sheet layer does not contain water and glycerin, specifically, in the first embodiment described above, the tobacco rod portion has a composite sheet having a tobacco sheet layer and a permeability reduction layer that can reduce the permeation of at least one component selected from water and glycerin, or in the second embodiment described above, the tobacco rod portion has an absorbent material-containing tobacco sheet containing an absorbent material, wherein the content of the absorbent material in the absorbent material-containing tobacco sheet is 50% by weight or more. In these embodiments, for example, the tobacco sheet layer in the tobacco rod portion does not contain at least one component selected from water and glycerin. However, even in such embodiments, at least one component selected from water and glycerin may be contained in the tobacco sheet over time, originating from water in the atmosphere or at least one component selected from water and glycerin contained in other components. In this case, the problem of charring of the heater member may occur as in the embodiments described above, so the effect of suppressing charring can be obtained even in embodiments of the other embodiments described above.

[0024] The material of the sheet base in the tobacco sheet layer may include shredded dried tobacco leaf lamina, fine powder, fibers, etc. In this specification, tobacco leaf may include leaf pulp (lamina), leaf veins (stem), and roots. The sheet base basically contains tobacco powder obtained from the lamina of tobacco leaf, as well as elements derived from the backbone and roots of tobacco leaf. The particle size of the tobacco powder is not particularly limited, but from the viewpoint of improving the feel in the mouth and enhancing the user experience, and from the viewpoint of improving the release of flavor components contained in the tobacco powder into the mouth, it is preferable that it passes through a 1.2 mm mesh, and more preferably that it passes through a 1.0 mm mesh. The tobacco species used as the raw material for the tobacco powder is not particularly limited, and examples include the Nicotiana genus, such as the yellow variety of Nicotiana tabacum, the Burley variety, and the Brasilia variety of Nicotiana rustica. The same species can be used for the tobacco materials and tobacco leaves described later. The content of tobacco leaf-derived components (excluding water) in the tobacco sheet layer (total content if two or more types are included) is not particularly limited, but it is preferably 30% by weight or more and 90% by weight or less, more preferably 40% by weight or more and 85% by weight or less, even more preferably 50% by weight or more and 85% by weight or less, and particularly preferably 65% ​​by weight or more and 85% by weight or less.

[0025] The content of at least one component selected from water and glycerin in the tobacco sheet layer (total content if two or more are included) is not particularly limited, but is preferably 5% by weight or more and 50% by weight or less, more preferably 7% by weight or more and 40% by weight or less, even more preferably 10% by weight or more and 30% by weight or less, and particularly preferably 15% by weight or more and 25% by weight or less. If the above content is below the upper limit of this range, heating efficiency is improved, sufficient aerosol is more easily generated, and the desired flavor is more easily provided. If the above content is above the lower limit of this range, a sufficient aerosol source can be secured, so sufficient aerosol is more easily generated, the number of puffs that can be taken increases, and the desired flavor is more easily provided.

[0026] The tobacco sheet layer may contain propylene glycol, triacetin, or 1,3-butanediol in addition to water and glycerin. The total content of at least one component selected from the group consisting of water, glycerin, propylene glycol, triacetin, and 1,3-butanediol in the tobacco sheet layer is usually 5% by weight or more, preferably 10% by weight or more, and usually 50% by weight or less, preferably 15% by weight or more and 25% by weight or less, from the viewpoint of generating sufficient aerosol and imparting a good flavor.

[0027] The tobacco sheet layer may contain ingredients other than the above-mentioned tobacco leaf-derived components, water, and glycerin (other ingredients), and examples of other ingredients include flavorings and other ingredients that can produce flavor.

[0028] The types of fragrances listed above are not particularly limited, and from the viewpoint of imparting a good flavor, acetanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise oil, apple juice, Peruvian 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-citronella Ronellol, Clary Sage Extract, Cocoa, Coffee, Cognac Oil, Coriander Oil, Cumin Aldehyde, Davana Oil, δ-Decalactone, γ-Decalactone, Decanoic Acid, Dill Herb Oil, 3,4-Dimethyl-1,2-Cyclopentanedione, 4,5-Dimethyl-3-Hydroxy-2,5-Dihydrofuran-2-one, 3,7-Dimethyl-6-Octenic Acid, 2,3-Dimethylpyrazine, 2,5-Dimethylpyrazine, 2,6-Dimethylpyrazine, Ethyl 2-Methyl Butyrate, Ethyl Ethyl Butyrate, Ethyl Hexanoate, Ethyl Isovalerate, Ethyl Lactate, Ethyl Laurate, Ethyl Levulinate, Ethyl Maltol, Ethyl Octanoate, Ethyl Oleate, Ethyl Palmitate, Ethyl Phenyl Ethyl, 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, genus absolute, gentian root infusion, geraniol, geranyl acetate, grape juice, guaiacol, guava extract, γ-heptalactone, γ-hexalactone, hexanoic acid, cis-3-hexen-1-ol, hexyl acetate, hexyl alcohol, hexyl phenylacetate, honey, 4-hydroxy-3-pentenoic acid Chloride, 4-hydroxy-4-(3-hydroxy-1-butenyl)-3,5,5-trimethyl-2-cyclohexen-1-one, 4-(para-hydroxyphenyl)-2-butanone, sodium 4-hydroxyundecanoate, inmortel absolute, β-ionone, isoamyl acetate, isoamyl butyrate, isoamyl phenylacetate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute, cola nut tincture, labdanum oil, lemon terpene oil, licorice extract, linalool, linalyl acetate, robe Dioscorea root oil, maltol, maple syrup, menthol, menthone, L-menthyl acetate, paramethoxybenzaldehyde, methyl-2-pyrrolyl ketone, methyl anthranilate, methyl phenylacetate, methyl salicylate, 4'-methylacetophenone, methylcyclopentenolone, 3-methylvaleric acid, mimosa absolute, honey, myristic acid, nerol, nerolidol, gamma-nonalactone, nutmeg oil, delta-octaractone, octanal, octanoic acid, orange flower oil, orange oil, orris root oil, palmitic acid, ω-pentadyl Calactone, peppermint oil, petitgrain Paraguay oil, phenethyl alcohol, phenethyl phenylacetate, phenylacetic acid, piperonal, plum extract, propenyl guaetol, propyl acetate, 3-propyridenephthalide, 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, 1,5,59 - 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), or ethyl - 2 - (p - menthane - 3 - carboxamido)acetate (WS - 5), and particularly preferably menthol.

[0029] The thickness of the tobacco sheet layer is not particularly limited, but it is preferably 0.05 mm or more, more preferably 0.1 mm or more, and also preferably 1 mm or less, more preferably 0.5 mm or less. When the above - mentioned thickness is at least the lower limit of this range, the situation where the flavor components in the sheet quickly disappear is less likely to occur. Also, when the above - mentioned thickness is at most the upper limit of this range, the situation where the sheet is too thick and the heating efficiency deteriorates (making delivery difficult) is less likely to occur.

[0030] The basis weight of the tobacco sheet layer is not particularly limited, but it is preferably 50 gsm or more, more preferably 100 gsm or more, and also preferably 1000 gsm or less, more preferably 500 gsm or less. In this specification, "gsm" and "g / m ２ " are synonymous. When the above - mentioned basis weight is at least the lower limit of this range, the situation where the flavor components in the sheet quickly disappear is less likely to occur. Also, when the above - mentioned basis weight is at most the upper limit of this range, the situation where the sheet is too thick and the heating efficiency deteriorates (making delivery difficult) is less likely to occur.

[0031] The permeation reduction layer can reduce the permeation of at least one component selected from water and glycerin. By providing such a layer, the component can be prevented from migrating to the side of a member such as a heater, and the generation of scorching caused by the carbide of the component derived from the tobacco material soluble in the component remaining near the heater or the like can be suppressed. In the present specification, the permeation of a layer means reaching from one surface of the layer to the other surface. That is, the permeation reduction layer capable of reducing the permeation of component A means a layer that can reduce the amount of component A reaching the surface of the other side compared to the amount of component A brought into contact with one surface of the layer when component A is brought into contact with one surface of the layer. Specifically, a permeation reduction layer for reducing the permeation of component A can be obtained by using a non-permeable material that does not allow component A to penetrate inside, or a layer containing an absorbent material that can hold component A inside.

[0032] As long as the permeation reduction layer can reduce the permeation of at least one component selected from water and glycerin, its form is not particularly limited. For example, a sheet containing at least one component selected from shellac, calcium carbonate, sodium silicate, cellulose, or activated carbon, or a metal foil or the like can be used. The permeation reduction layer may use these sheets or metal foils in combination.

[0033] If the permeability reduction layer is a sheet containing at least one component selected from shellac, calcium carbonate, sodium silicate, cellulose, or activated carbon, it may be a sheet made of the material, or it may be a material made of the component and a substrate that holds the component. Examples of substrates that hold the component include vinyl acetate; polyvinyl acetate; polyvinyl alcohol; polyethylene glycol; water-soluble esters or ethers; polysaccharides such as pectin, agar, starch, guar gum, carrageenan, gellan gum, xanthan gum, locust bean gum, gum arabic, tamarind gum, alginic acid, or alginates; oils and fats; natural polymers (e.g., proteins); waxes such as paraffin; CMC (carboxymethylcellulose), HEC (hydroxyethylcellulose), HPC (hydroxypropylcellulose), or HPMC (hydroxypropylmethylcellulose). Furthermore, if the permeation reduction layer is a sheet containing at least one component selected from shellac, calcium carbonate, sodium silicate, cellulose, or activated carbon, the content of the component in the permeation reduction layer (total content if two or more are included) is not particularly limited, but is preferably 20% by weight or more, more preferably 30% by weight or more, even more preferably 40% by weight or less, and preferably 95% by weight or less, and more preferably 90% by weight or less. If the above content is above the lower limit of this range, problems such as a decrease in the anti-scorching function, scorching occurring and a decrease in the efficiency and stability of heat conduction, and the addition of undesirable components to the delivery components are less likely to occur. Also, if the above content is below the upper limit of this range, problems such as insufficient strength and fragility preventing the permeation reduction layer from being formed into a sheet are less likely to occur.

[0034] The permeation-reducing layer may contain components other than the above-mentioned substrate (other components) to the extent that the effects of the present invention are obtained. In particular, if the permeation-reducing layer is a sheet containing at least one component selected from shellac, calcium carbonate, sodium silicate, cellulose, or activated carbon, the permeation-reducing layer may contain these components and other components to the extent that the effects of the present invention are obtained. Examples of other components include glycerin or propylene glycol. When shellac is used as the permeation-reducing layer, the permeation-reducing layer must be cured (e.g., thermosetting) during its manufacturing process, and the cured layer is also called a cured shellac sheet (or a thermosetting shellac sheet in the case of thermosetting). The temperature for thermosetting is preferably a temperature higher than the heating temperature at the time of use.

[0035] When the light transmission reduction layer is a metal foil, the type of metal is not particularly limited, and examples include aluminum, iron-chromium alloy, or iron-nickel alloy. From the viewpoint of thermal conductivity and formability, aluminum or iron-chromium alloy is preferred.

[0036] The thickness of the transmission-reducing layer is not particularly limited, but is preferably 0.02 mm or more and 1.5 mm or less, more preferably 0.05 mm or more and 1 mm or less, even more preferably 0.1 mm or more and 0.5 mm or less, and particularly preferably 0.2 mm or more and 0.4 mm or less. From the viewpoint of thermal conductivity, a smaller thickness is preferable, but within this range, not only is the efficiency of thermal conductivity excellent, but the reduction in stability and the suppression of charring are also promoted.

[0037] The basis weight of the transmission reduction layer is not particularly limited, but is preferably 3 gsm or more and 1200 gsm or less, more preferably 6 gsm or more and 700 gsm or less, even more preferably 20 gsm or more and 350 gsm or less, and particularly preferably 30 gsm or more and 200 gsm or less. When the basis weight is within this range, not only is the efficiency of heat conduction excellent, but the reduction in stability and the suppression of scorching are also promoted.

[0038] The tobacco sheet layer and the permeability reduction layer may consist of two layers, one of each, or three or more layers, with at least one of the layers being two or more. However, from the viewpoint of suppressing the migration of at least one component selected from water and glycerin in the tobacco sheet to other members, it is preferable that the outermost layer is the permeability reduction layer. However, if both outermost layers are permeability reduction layers, the adhesion of flavor components such as nicotine in the tobacco sheet layer to the aerosol will be suppressed. Therefore, it is preferable that one of the outermost layers is the tobacco sheet layer and the other is the permeability reduction layer, and that they are composed of two layers, one of each.

[0039] Compared to embodiments without a permeability-reducing layer, the composite sheet can suppress the migration of at least one component selected from water and glycerin in the tobacco sheet layer to other members, thus enabling the effects of the present invention to be obtained in any form. In other words, the effects of the present invention can be obtained even when using the composite sheet of this embodiment in a general tobacco sheet usage manner. Therefore, for example, it may be a sheet in the shape of cut pieces or strands, or a sheet that has been folded multiple times (preferably folded multiple times horizontally to the longitudinal direction of the filled material) (a so-called gathered sheet). However, since charring due to heating is likely to occur in the heater member of a device that heats non-combustion heated tobacco, it is preferable that the side on which the permeability-reducing layer in the composite sheet is laminated faces the side where the heater member is located. The following describes specific embodiments for achieving this preferred arrangement.

[0040] The manner in which the non-combustion heated tobacco is heated is not particularly limited, but for example, it may be a manner in which the outer surface of the non-combustion heated tobacco 10 is heated, as shown in Figure 2, or a manner in which the tobacco rod portion 11 of the non-combustion heated tobacco 10 is heated from the inside, as shown in Figure 3. As will be explained in detail later, Figures 2 and 3 represent an electric heated tobacco product 30 which is composed of an electric heating device 20 comprising a heater member 21, a battery unit 22 that serves as a power source for the heater member 21, and a control unit 23 for controlling the heater member 21, and a non-combustion heated tobacco inserted so as to contact the heater member 21, wherein the non-combustion heated tobacco is the non-combustion heated tobacco 10 described above.

[0041] When an electrically heated tobacco product is heated from the outer circumferential surface of the tobacco rod portion 11 as shown in Figure 2, the composite sheet of the tobacco rod portion 11 can be configured as shown in Figure 4. The tobacco rod portion 11 shown in Figure 4(a) has a rolling paper 41 and a cylindrical (particularly cylindrical) composite sheet configured such that the inside is a tobacco sheet layer 42 and the outside is a permeability reduction layer 43. In the tobacco rod portion of Figure 4(a), three cylindrical composite sheets of different radii are provided, but the number of composite sheets is not particularly limited and may be 1, 1 or more, 2 or more, 3 or more, 20 or less, 10 or less, 8 or less, or 6 or less. Furthermore, although the composite sheet in Figure 4(a) is cylindrical, it may also be a polygonal cylindrical shape such as a triangular, square, pentagonal, or hexagonal cylindrical shape, and it may not be a complete cylindrical shape, but rather composed of a part of these cylindrical shapes (for example, a semi-cylindrical shape obtained by cutting a cylinder in the axial direction). The tobacco rod portion 11 shown in Figure 4(b) has a rolling paper 41 and a helical composite sheet configured such that the inside is a tobacco sheet layer 42 and the outside is a permeability reduction layer 43. The number of turns in this helical is not particularly limited and may be 1, 1 or more, 2 or more, 3 or more, 20 or less, 10 or less, 8 or less, or 6 or less. The composite sheet in Figure 4(b) is shaped as if it is wound in a circular shape, but it may also be shaped as if it is wound in a polygonal shape.

[0042] If an electrically heated tobacco product heats from the inside of a tobacco rod portion 11 as shown in Figure 3, the composite sheet of the tobacco rod portion can be configured as shown in Figure 5. The tobacco rod portion 11 shown in Figure 5(a) has a rolling paper and a cylindrical (particularly cylindrical) composite sheet configured such that the inside is a permeability reduction layer 43 and the outside is a tobacco sheet layer 42. For example, a pin-shaped heater member 21 is inserted into the hollow inner part of this cylindrical shape. The composite sheet may consist of one, as shown in Figure 5(a), or multiple, as shown in Figure 5(b). The number of composite sheets is not particularly limited; as shown in Figure 5(a), it may be one, as shown in Figure 5(b), or multiple. Specifically, it may be two or more, three or more, 20 or less, 10 or less, 8 or less, or 6 or less. Furthermore, although the composite sheet in Figure 5(a) is cylindrical, it may also be a polygonal tube such as a triangular, square, pentagonal, or hexagonal tube, and it may not be a perfect cylinder but rather composed of a part of these cylindrical shapes (for example, a semi-cylindrical shape obtained by cutting a cylinder in the axial direction). For example, as shown in Figure 5(c), making the composite sheet an elliptical tube makes it easier to insert the blade-shaped heater member 21. Moreover, in Figure 4(b) above, the inner and outer layers may be reversed, that is, the inner layer may be a transmission reduction layer 43 and the outer layer may be a helical shape with a tobacco sheet layer 42.

[0043] Among the specific embodiments described above, it is preferable that the composite sheet is cylindrical, as shown in Figures 4(a) and 5(a). Furthermore, it is even more preferable that the composite sheet is cylindrical, arranged such that the axial direction of the cylindrical shape is substantially parallel to the ventilation direction, and that the first surface of the composite sheet on the side where the permeability reduction layer exists relative to the tobacco sheet is the inner or outer surface.

[0044] The composite sheet may be in an embodiment that combines Figures 4 and 5 above.

[0045] The composite sheet may have layers other than the tobacco sheet layer 42 and the transmission reduction layer 43 described above, as long as the effects of the present invention are obtained. For example, an adhesive layer may be provided between the tobacco sheet layer 42 and the transmission reduction layer 43.

[0046] The material of the adhesive layer is not particularly limited as long as it contains components that can bond the tobacco sheet layer and the permeability reduction layer. Examples of components that can be used as binders in the adhesive layer include vinyl acetate; polyvinyl acetate; polyvinyl alcohol; polyethylene glycol; water-soluble esters or ethers; polysaccharides such as pectin, agar, starch, guar gum, carrageenan, gellan gum, xanthan gum, locust bean gum, gum arabic, tamarind gum, alginic acid, or alginates; oils and fats; natural polymers (e.g., proteins); waxes such as paraffin; CMC (carboxymethylcellulose), HEC (hydroxyethylcellulose), HPC (hydroxypropylcellulose), or HPMC (hydroxypropylmethylcellulose), etc., and from the viewpoint of bonding between the permeability reduction layer and the tobacco sheet layer, it is preferable that the adhesive layer contains at least one component selected from the group consisting of HPC and polyvinyl acetate. If the adhesion between the transmission reduction layer and the tobacco sheet layer is good, the risk of the transmission reduction layer detaching from the tobacco sheet layer after heater heating and adhering to the heater side or remaining inside the device, which would worsen maintainability, is reduced.

[0047] From the viewpoint of suppressing charring, the composite sheet preferably satisfies the following (Condition 1-1). (Condition 1-1) When the following (Operation 1-1) or (Operation 1-1'), (Operation 2-1), and (Operation 3-1) are performed using the composite sheet, state A-1 in the following (Operation 3-1) is not observed. (Operation 1-1) Prepare an aluminum foil with a thickness of 12 μm or less and a heater, and arrange the aluminum foil, the heater, and the composite sheet so that the aluminum foil is sandwiched between the first surface of the composite sheet on the side where the transmission reduction layer is present relative to the tobacco sheet layer and the heater. (Operation 1-1') Prepare a heater and arrange the heater and the composite sheet so that the surface of the composite sheet on the side where the transmission reduction layer is present relative to the tobacco sheet layer and the heater are adjacent to each other. (Operation 2-1) Heat the heater in a temperature range of 335°C or higher and 365°C or lower and hold for 300 seconds. (Operation 3-1) After the above heat treatment, observe the aluminum foil in (Operation 1-1) or the heater in (Operation 1-1') and check whether the following condition A-1 is observed. Condition A-1: ​​A state in which solid matter with a maximum height of 100 μm or more is attached to the aluminum foil in (Operation 1-1) or the heater in (Operation 1-1').

[0048] The aluminum foil used in (Condition 1-1) above is not particularly restricted, and commercially available products can be used. Furthermore, the heater used in (Condition 1-1) above is not particularly restricted as long as it can heat up to the above heating temperature; a general-purpose heater can be used.

[0049] Regarding state A-1 in (operation 3-1) above, no special method is used to measure the maximum height of solid matter adhering to the aluminum foil or heater; for example, it can be measured using a KEYENCE ONE-SHOT 3D VR series (VR5000).

[0050] From the viewpoint of suppressing scorching, it is preferable that the composite sheet further satisfies the following condition (Condition 1-1'). (Condition 1-1') When the above operations (Operation 1-1) or (Operation 1-1'), (Operation 2-1), and (Operation 3-1) are performed using the composite sheet, it is preferable that the following condition B-1 is not observed. Condition B-1: In the image of the aluminum foil in (Operation 1-1) or the heater in (Operation 1-1'), when the contact area of ​​the composite sheet is 100%, the area of ​​the portion where the sum of RGB values ​​is less than or equal to (sum of RGB values ​​of the blank portion - 100) is 1% or more. The method for obtaining the image in the above condition B-1 and the method for evaluating the sum of RGB values ​​are not particularly limited, and for example, a method using the KEYENCE ONE-SHOT 3D VR series (VR5000) can be cited. Furthermore, the "blank area" refers to the area that the transmittance reduction layer does not touch in (operation 1-1) or (operation 1-1') above, and the area where the brightness difference with respect to this blank area is 100 or less, that is, the area where the "sum of RGB values ​​of the blank area - 100" is less than or equal to this area, is determined to be burnt.

[0051] (Tobacco Sheet Containing Absorbent Material) The tobacco sheet containing absorbent material is not particularly limited as long as it contains at least one component selected from water and glycerin and an absorbent material, and the absorbent material content is 50% by weight or more. This tobacco sheet containing absorbent material is a component used for the purpose of imparting tobacco material.

[0052] The type of absorbent is not particularly limited as long as it can absorb at least one component selected from water and glycerin. Examples include calcium carbonate, sodium silicate, cellulose, or activated carbon. From the viewpoint of preventing a decrease in the efficiency and stability of heat conduction, it is preferable that it be at least one selected from the group consisting of calcium carbonate, sodium silicate, and activated carbon. The content of the absorbent in the absorbent-containing tobacco sheet is not particularly limited as long as it is 50% by weight or more, preferably 50% by weight or more and 80% by weight or less, more preferably 70% by weight or less, even more preferably 65% ​​by weight or less, and particularly preferably 60% by weight or less, in order to ensure sufficient absorbency, i.e., sufficient prevention of burning.

[0053] The form of the tobacco material contained in the absorbent tobacco sheet is not particularly limited and may be any tobacco material used as a general tobacco filler, such as shredded dried tobacco leaf lamina, fine powder, or fibers. The content of the tobacco material in the absorbent tobacco sheet is not particularly limited, but is preferably 15% by weight or more and 45% by weight or less, more preferably 20% by weight or more and 42.5% by weight or less, even more preferably 25% by weight or more and 42.5% by weight or less, and particularly preferably 32.5% by weight or more and 42.5% by weight or less. When the above content is within this range, it is easier to ensure a good flavor.

[0054] The content of at least one component selected from water and glycerin in the absorbent tobacco sheet is not particularly limited, but is preferably 2.5% by weight or more and 25% by weight or less, more preferably 3.5% by weight or more and 20% by weight or less, even more preferably 5% by weight or more and 15% by weight or less, and particularly preferably 7.5% by weight or more and 12.5% ​​by weight or less. When the above content is within this range, sufficient aerosol generation can be ensured.

[0055] The shape of the absorbent material-containing tobacco sheet is not particularly limited, and a shape similar to that of the composite sheet described above can be adopted. A cylindrical shape is preferred, and more preferably, the cylindrical shape is arranged such that the axial direction of the cylindrical shape and the ventilation direction are substantially parallel. In this case, the orientation of the surfaces in the composite sheet is not limited for the absorbent material-containing tobacco sheet. For example, if it is cylindrical, either surface may face inward.

[0056] The absorbent tobacco sheet may have other layers to the extent that the effects of the present invention are obtained, for example, it may include a known tobacco sheet as another layer.

[0057] From the viewpoint of suppressing charring, it is preferable that the absorbent tobacco sheet satisfies the following conditions (1-2). (Condition 1-2) When the following (operation 1-2) or (operation 1-2'), (operation 2-2), and (operation 3-2) are performed using the absorbent tobacco sheet, state A-2 in the following (operation 3-2) is not observed. (operation 1-2) Prepare an aluminum foil with a thickness of 12 μm or less and a heater, and arrange the aluminum foil, the heater, and the absorbent tobacco sheet so that the aluminum foil is sandwiched between the absorbent tobacco sheet and the heater. (operation 1-2') Prepare a heater, and arrange the heater and the absorbent tobacco sheet so that the absorbent tobacco sheet and the heater are adjacent to each other. (operation 2-2) Heat the heater in a temperature range of 335°C or higher and 365°C or lower, and hold for 300 seconds. (Operation 3-2) After the above heat treatment, observe the aluminum foil in (Operation 1-2) or the heater in (Operation 1-2') and check whether the following condition A-2 is observed. Condition A-2: A state in which solid matter with a maximum height of 100 μm or more is attached to the aluminum foil in (Operation 1-2) or the heater in (Operation 1-2').

[0058] The aluminum foil and heater used in (Condition 1-2) above can be the same as those used in (Condition 1-1) described above. Furthermore, the conditions for evaluating state A-2 in (Operation 3-2) can be similarly applied to the conditions for evaluating state A-1 described in (Operation 3-1) above.

[0059] From the viewpoint of suppressing charring, it is preferable that the absorbent tobacco sheet further satisfies the following (Condition 1-2'). (Condition 1-2') When the above (Operation 1-2) or (Operation 1-2'), (Operation 2-2), and (Operation 3-2) are performed using the absorbent tobacco sheet, it is preferable that the following condition B-2 is not observed. Condition B-2: In the image of the aluminum foil in (Operation 1-2) or the heater in (Operation 1-2'), when the contact area of ​​the absorbent tobacco sheet is 100%, the area of ​​the portion where the sum of RGB values ​​is less than or equal to (sum of RGB values ​​of the blank portion - 100) is 1% or more.

[0060] The conditions for evaluating state B-2 described above can be the same as the conditions for evaluating state B-1 described above.

[0061] (Rolling Paper) The composition of the rolling paper is not particularly limited and can be in a general form, for example, one in which pulp is the main component. As for the pulp, in addition to being made from wood pulp such as softwood pulp or hardwood pulp, it may also be obtained by blending non-wood pulp commonly used for rolling paper for tobacco products, such as flax pulp, hemp pulp, sisal pulp, and esparto. As for the type of pulp, chemical pulp produced by kraft pulping, acidic, neutral, or alkaline sulfite pulping, soda salt pulping, etc., as well as gland pulp, chemigland pulp, thermomechanical pulp, etc., can be used.

[0062] Using the above pulp, rolled paper is manufactured by adjusting and homogenizing the pulp during the papermaking process using a long-wire paper machine, a cylinder paper machine, a short-cylinder composite paper machine, etc. If necessary, a wet strength enhancer can be added to impart water resistance to the rolled paper, or a sizing agent can be added to adjust the print quality of the rolled paper. Furthermore, internal papermaking aids such as aluminum sulfate, various anionic, cationic, nonionic, or amphoteric yield enhancers, water drainage enhancers, and paper strength enhancers, as well as papermaking additives such as dyes, pH adjusters, defoamers, pitch control agents, and slime control agents, can be added.

[0063] The basis weight of the base paper for the rolls is, for example, usually 20 gsm or more, preferably 25 gsm or more. On the other hand, the basis weight is usually 65 gsm or less, preferably 50 gsm or less, and even more preferably 45 gsm or less. The thickness of the rolls having the above characteristics is not particularly limited, but from the viewpoint of rigidity, breathability, and ease of adjustment during papermaking, it is usually 10 μm or more, preferably 20 μm or more, more preferably 30 μm or more, and also usually 100 μm or less, preferably 75 μm or less, and even more preferably 50 μm or less. As rolls for tobacco products, the shape can be a square or a rectangle. When used as rolls for winding tobacco fillers (to make a tobacco rod), the length of one side can be about 12 to 70 mm, the length of the other side can be 15 to 28 mm, the preferred length of the other side can be 22 to 24 mm, and the preferred length can be about 23 mm. When wrapping tobacco filler in rolling paper in a columnar shape, for example, by overlapping the end of the rolling paper in the w direction with the opposite end by about 2 mm and gluing them together, a columnar paper tube shape is formed, and the tobacco filler is filled inside. The size of the rectangular rolling paper can be determined by the size of the finished tobacco rod section 11. In the case of wrapping, such as with chip paper, where the tobacco rod section 11 is connected to other components adjacent to the tobacco rod section 11, the length of one side can be 20 to 60 mm and the length of the other side can be 15 to 28 mm.

[0064] In addition to the pulp mentioned above, the roll paper may contain fillers. The filler content can be 10% or more and less than 60% by weight of the total weight of the roll paper, and is preferably 15% or more and 45% or less by weight. In roll paper, it is preferable that the filler content be 15% or more and 45% or less by weight within a preferred basis weight range (25 gsm or more and 45 gsm or less). Furthermore, when the basis weight is 25 gsm or more and 35 gsm or less, it is preferable that the filler content be 15% or more and 45% or less by weight, and when the basis weight is greater than 35 gsm and 45 gsm or less, it is preferable that the filler content be 25% or more and 45% or less by weight. Calcium carbonate, titanium dioxide, kaolin, etc., can be used as fillers, but calcium carbonate is preferred from the viewpoint of enhancing flavor and whiteness.

[0065] Various additives other than the base paper and fillers may be added to the rolled paper. For example, water resistance enhancers can be added to improve water resistance. Water resistance enhancers include wet strength enhancers (WS agents) and sizing agents. Examples of wet strength enhancers include urea formaldehyde resin, melamine formaldehyde resin, and polyamide epichlorohydrin (PAE). Examples of sizing agents include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohol with a degree of saponification of 90% or more. Paper strength enhancers may also be added as additives, such as polyacrylamide, cationic starch, oxidized starch, CMC, polyamide epichlorohydrin resin, and polyvinyl alcohol. In particular, it is known that using a very small amount of oxidized starch improves air permeability (Japanese Patent Publication No. 2017-218699). Furthermore, the wrapping paper may be coated as appropriate.

[0066] [Mouthpiece Section] The configuration of the mouthpiece section 14 is not particularly limited. For example, as shown in Figure 1, it can include a cooling segment 12 and a filter segment 13 containing a filter material, and the cooling segment 12 can be configured to be sandwiched adjacent to the tobacco rod section 11 and the filter segment 13 in the axial direction of the non-combustion heated tobacco 10. The filter segment 13 and the cooling segment 12 will be described in detail below.

[0067] (Filter Segment) The filter segment 13 is not particularly limited as long as it has the function of a general filter. For example, a tow made of synthetic fibers (also simply called "tow") or a cylindrical material such as paper can be used. General functions of a filter include, for example, adjusting the amount of air mixed when inhaling aerosols, reducing flavor, and reducing nicotine and tar, but it is not necessary to have all of these functions. In addition, in electrically heated tobacco products, which tend to produce fewer components and have a lower filling rate of tobacco filler compared to conventional cigarette products, it is also important to suppress the filtration function while preventing the tobacco filler from falling out and to suppress the scattering of aggregated droplets into the oral cavity.

[0068] The shape of the filter segment 13 is not particularly limited and a known shape can be adopted. It can usually be cylindrical and can take the following forms. The filter segment 13 may also have sections such as cavities (center holes, etc.) or recesses in its circumferential cross-section.

[0069] The circumferential cross-sectional shape of the filter segment 13 is substantially circular, and the diameter of the circle can be appropriately changed according to the size of the product. Usually, it is 4.0 mm or more and 9.0 mm or less, preferably 4.5 mm or more and 8.5 mm or less, and more preferably 5.0 mm or more and 8.0 mm or less. When the cross-section is not circular, the above diameter is applied to the diameter of the circle assuming a circle having the same area as the area of the cross-section. The circumferential length of the circumferential cross-sectional shape of the filter segment 13 can be appropriately changed according to the size of the product. Usually, it is 14.0 mm or more and 27.0 mm or less, preferably 15.0 mm or more and 26.0 mm or less, and more preferably 16.0 mm or more and 25.0 mm or less. The axial length of the filter segment 13 can be appropriately changed according to the size of the product. Usually, it is 15 mm or more and 35 mm or less, preferably 17.5 mm or more and 32.5 mm or less, and more preferably 20.0 mm or more and 30.0 mm or less.

[0070] The ventilation resistance per 120 mm of the axial length of the filter segment 13 is not particularly limited, but usually 40 mmHg ２ O or more and 300 mmHg ２ O or less, and preferably 70 mmHg ２ O or more and 280 mmHg ２ O or less, and more preferably 90 mmHg ２ O or more and 260 mmHg ２ O or less. The ventilation resistance of the above filter segment 13 can be measured by the same method as the method for measuring the ventilation resistance of the tobacco product 10 described above.

[0071] Further, the mode of the filter segment 13 is not particularly limited, and it can be a plane filter including a single filter segment, a multi-segment filter including a plurality of filter segments such as a dual filter or a triple filter, etc. When a multi-segment filter is used, a filter segment containing a coolant according to an embodiment of the present invention and a filter segment containing a filter medium can be provided.

[0072] The density of the filter media constituting the filter segment 13 is not particularly limited, but is usually 0.10 g / cm³. ３ Above, 0.25g / cm ３ The following is the value: 0.11 g / cm³ ３ Above, 0.24g / cm ３ Preferably, it is 0.12 g / cm³. ３ Above, 0.23g / cm ３ The following is more preferable:

[0073] The form of the filter material included in the filter segment 13 is not particularly limited, and known forms may be adopted. For example, a cylindrical form of cellulose acetate tow can be used. The single filament fineness and total fineness of the cellulose acetate tow are not particularly limited, but in the case of a mouthpiece member with a circumference of 22 mm, the single filament fineness is preferably 5 g / 9000 m or more and 12 g / 9000 m or less, and the total fineness is preferably 12000 g / 9000 m or more and 35000 g / 9000 m or less. The cross-sectional shape of the cellulose acetate tow fibers can be circular, elliptical, Y-shaped, I-shaped, R-shaped, etc. In the case of a filter filled with cellulose acetate tow, triacetin may be added in an amount of 5% by weight or more and 10% by weight or less relative to the weight of the cellulose acetate tow to improve the filter hardness. Alternatively, a paper filter filled with sheet-shaped pulp paper may be used instead of the acetate filter.

[0074] The filter segment 13 can be manufactured by known methods. For example, when synthetic fibers such as cellulose acetate tow are used as the material for the filter media, it can be manufactured by spinning a polymer solution containing a polymer and a solvent, and then crimping it. As an example of such a method, the method described in International Publication No. 2013 / 067511 can be used.

[0075] The filter material may include a crushable additive release container (e.g., a capsule) containing a crushable outer shell made of gelatin or the like. The form of the capsule (also called an "additive release container" in the art) is not particularly limited, and known forms may be adopted, for example, a crushable additive release container containing a crushable outer shell made of gelatin or the like. In this case, when the capsule is destroyed by the user of the tobacco product before, during, or after use, it releases the liquid or substance (usually a flavoring agent) contained inside the capsule, which is then transferred to the tobacco smoke while the tobacco product is being used, and to the surrounding environment after use. The form of the capsule is not particularly limited, and for example, it may be an easily breakable capsule, and its shape is preferably spherical. The additive contained in the capsule may include any of the above-mentioned additives, but it is particularly preferable to include a flavoring agent or activated carbon. In addition, one or more materials that help filter the smoke may be added as additives. The form of the additive is not particularly limited, but is usually liquid or solid. The use of capsules containing additives is well known in this art. Easily breakable capsules and methods for manufacturing them are also well known in this art. Flavoring agents may include, for example, menthol, spearmint, peppermint, fenugreek, or clove, medium-chain triglyceride (MCT), etc. The flavoring agent may also be menthol, or a combination thereof.

[0076] The filter segment 13 may be equipped with a winding paper (filter plug winding paper) on which the filter material described above is wound, from the viewpoint of improving strength and structural rigidity. The form of the winding paper is not particularly limited and may include one or more rows of joints containing adhesive. The adhesive may include a hot melt adhesive, and the hot melt adhesive may further contain polyvinyl alcohol. Also, if the filter consists of two or more segments, it is preferable that the winding paper winds these two or more segments together. The material of the winding paper is not particularly limited and known materials can be used, and it may also contain fillers such as calcium carbonate. The thickness of the winding paper is not particularly limited, but is usually 20 μm or more and 140 μm or less, preferably 30 μm or more and 130 μm or less, and more preferably 30 μm or more and 120 μm or less. The basis weight of the rolled paper is not particularly limited, but is usually 20 gsm or more and 100 gsm or less, preferably 22 gsm or more and 95 gsm or less, and more preferably 23 gsm or more and 90 gsm or less. Furthermore, the rolled paper may or may not be coated, but from the viewpoint of providing functions other than strength and structural rigidity, it is preferable to coat it with a desired material.

[0077] The filter segment 13 may further include a center hole segment having one or more hollow sections. The center hole segment is usually positioned on the cooling segment side of the filter material, and preferably adjacent to the cooling segment.

[0078] (Cooling Segment) The cooling segment 12 is sandwiched between the tobacco rod portion and the filter segment and is typically a rod-shaped member with a cavity in which the circumferential cross-section, such as a cylinder, is hollow.

[0079] The length of the cooling segment 12 in the longitudinal direction can be appropriately changed according to the size of the product, but is usually 20 mm or more, preferably 26 mm or more, more preferably 28 mm or more, and even more preferably 32 mm or more. Also, it is usually 40 mm or less, preferably 32 mm or less, more preferably 28 mm or less, and even more preferably 26 mm or less. By setting the length of the cooling segment in the longitudinal direction to be above the lower limit above, sufficient cooling effect can be ensured and good flavor can be obtained, and by setting it to be below the upper limit above, losses due to the generated vapor and aerosol adhering to the inner wall of the cooling segment can be suppressed. The length of the circumference of the circumferential cross-sectional shape of the cooling segment 12 can be appropriately changed according to the size of the product, but is usually 15 mm or more and 30 mm or less, preferably 18 mm or more and 24 mm or less, and even more preferably 20 mm or more and 22.5 mm or less.

[0080] As shown in Figure 1, the cooling segment 12 may have openings V (also referred to in this technical field as "ventilation filters (Vf)") provided circumferentially and concentrically. The presence of openings V allows air to flow into the cooling section from the outside during use, lowering the temperature of the components and air flowing in from the tobacco rod. Furthermore, by positioning the cooling segment within a region of 4 mm or more in the direction of the cooling segment from the boundary between the cooling segment and the filter segment, not only is the cooling capacity improved, but the retention of components generated by heating within the cooling segment is suppressed, and the amount of these components delivered can be improved. When an aerosol substrate is used in the tobacco rod, the vapor containing the aerosol substrate and tobacco flavor components generated when the tobacco rod is heated comes into contact with outside air, causing a decrease in temperature and promoting the generation of aerosols.

[0081] The diameter of the opening V is not particularly limited, but is preferably 100 μm or more and 1000 μm or less, and more preferably 300 μm or more and 800 μm or less. The opening is preferably approximately circular or approximately elliptical, and in the case of approximately elliptical, the diameter refers to the major axis.

[0082] [Chip Paper] The composition of the chip paper 15 is not particularly limited and can be in a general form, for example, one in which pulp is the main component. As for the pulp, in addition to being made from wood pulp such as softwood pulp or hardwood pulp, it may also be obtained by mixing and manufacturing non-wood pulp commonly used for rolling papers for tobacco products, such as flax pulp, hemp pulp, sisal pulp, and esparto. These pulps may be used individually or in any combination of multiple types in any proportion. Furthermore, the chip paper 15 may consist of one sheet or multiple sheets or more. As for the form of pulp, chemical pulp produced by kraft pulping, acidic / neutral / alkaline sulfite pulping, soda salt pulping, etc., gland pulp, chemigland pulp, thermomechanical pulp, etc. can be used. Note that the chip paper 15 may be manufactured by the manufacturing method described later, or commercially available products may be used.

[0083] The shape of the chip paper 15 is not particularly limited and can be, for example, a square or a rectangle. The basis weight of the chip paper 15 is not particularly limited, but is usually 32 gsm or more and 40 gsm or less, preferably 33 gsm or more and 39 gsm or less, and more preferably 34 gsm or more and 38 gsm or less. The thickness of the chip paper 15 is not particularly limited, but is usually 20 μm or more and 140 μm or less, preferably 30 μm or more and 130 μm or less, and more preferably 30 μm or more and 120 μm or less. The air permeability of the chip paper 15 is not particularly limited, but is usually 0 cholesta units or more and 30,000 cholesta units or less, and is preferably greater than 0 cholesta units and 10,000 cholesta units or less. In this specification, the air permeability is a value measured in accordance with ISO 2965:2009, and is the flow rate of gas passing through an area of ​​1 cm² per minute when the differential pressure between both sides of the paper is 1 kPa. ３ It is expressed as follows: 1 cholesta unit (1 C.U.) is equivalent to cm at 1 kPa. ３ / (min・cm) ２ )

[0084] The chip paper 15 may contain fillers in addition to the pulp described above. Examples include metal carbonates such as calcium carbonate and magnesium carbonate, metal oxides such as titanium oxide, titanium dioxide, and aluminum oxide, metal sulfates such as barium sulfate and calcium sulfate, metal sulfides such as zinc sulfide, quartz, kaolin, talc, diatomaceous earth, and gypsum. In particular, it is preferable to include calcium carbonate from the viewpoint of improving whiteness and opacity and increasing the heating rate. These fillers may be used individually or in combination of two or more.

[0085] In addition to the pulp and fillers mentioned above, the chip paper 15 may have various additives added to it. For example, it may contain a water resistance enhancer to improve its properties. Water resistance enhancers include wet strength enhancers (WS agents) and sizing agents. Examples of wet strength enhancers include urea formaldehyde resin, melamine formaldehyde resin, and polyamide epichlorohydrin (PAE). Examples of sizing agents include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohol with a saponification degree of 90% or higher.

[0086] A coating agent may be added to at least one of the two surfaces of the chip paper 15, the front and the back. There are no particular restrictions on the coating agent, but a coating agent that can form a film on the surface of the paper and reduce the permeability of liquids is preferred.

[0087] <Method for Manufacturing Non-Combustion Heated Tobacco> The method for manufacturing the non-combustion heated tobacco 10 described above is not particularly limited, and the basic components can be manufactured by known methods or combinations of known methods, and the composite sheet and absorbent tobacco sheet can be manufactured, for example, by the following method.

[0088] The method for manufacturing the composite sheet is not particularly limited, and it can be manufactured by providing a transmission-reducing layer to a tobacco sheet manufactured using a known method for manufacturing tobacco sheets, while referring to the conditions for the composite sheet described above.

[0089] Tobacco sheets can be formed by known methods such as papermaking, casting, and rolling. Details of various tobacco sheets formed by such methods are disclosed in "The Tobacco Encyclopedia," Tobacco Research Center, March 31, 2009. Furthermore, when manufacturing tobacco sheets containing at least one component selected from water and glycerin, the tobacco sheet may be manufactured so that the component is included during the manufacturing process, or it may be added after manufacturing.

[0090] The method for providing a permeability-reducing layer to a tobacco sheet is not particularly limited. For example, one method involves preparing a solution by dissolving the components contained in the permeability-reducing layer, applying the solution to the tobacco sheet using a known coating apparatus and coating system, and drying it. Another method involves preparing a sheet to be the permeability-reducing layer separately from the tobacco sheet, and then attaching the tobacco sheet and the sheet to be the permeability-reducing layer. When the permeability-reducing layer is thick, or when the permeability-reducing layer alone has sufficient strength, the method of attaching the tobacco sheet and the sheet to be the permeability-reducing layer is preferred. Examples of coating apparatus in the above coating method include blade coaters, bar coaters, roll coaters, air knife coaters, reverse roll coaters, curtain coaters, spray coaters, size press coaters, and gate roll coaters. Examples of coating systems include aqueous coating using a solvent such as water, and solvent-based coating using a solvent such as an organic solvent. Furthermore, conventional methods such as steam heaters, gas heaters, infrared heaters, electric heaters, hot air heaters, microwaves, or cylinder dryers can be used to dry the coated solution.

[0091] The method for manufacturing the absorbent tobacco sheet is not particularly limited. For example, an absorbent (a material that may be included in a permeability-reducing layer, such as calcium carbonate, sodium silicate, cellulose, or activated carbon) can be blended in a desired amount and manufactured using a known tobacco sheet manufacturing method (such as the casting method or rolling method). However, the papermaking method is undesirable from the viewpoint that it becomes difficult to retain the absorbent.

[0092] <Electric Heated Tobacco Product> A method for manufacturing an electric heated tobacco product according to another embodiment of the present invention (also simply referred to as "method for manufacturing an electric heated tobacco product") comprises an electric heating device comprising a heater member, a battery unit that serves as a power source for the heater member, and a control unit for controlling the heater member, and a non-combustion heated tobacco inserted so as to contact the heater member, wherein the non-combustion heated tobacco is the non-combustion heated tobacco described above. The electric heated tobacco product may be configured in a manner that heats the outer surface of the non-combustion heated tobacco 10, as shown in Figure 2, or in a manner that heats from the inside of the tobacco rod portion 11 of the non-combustion heated tobacco 10, as shown in Figure 3. In Figure 3, the heater member is cone-shaped, but it may be other shapes such as columnar. Note that the electric heating device 20 shown in Figures 2 and 3 is provided with an air intake hole, but it is not shown here. The electric heated tobacco product 30 will be described below using Figure 3. Note that for the non-combustion heated tobacco 10 in Figures 2 and 3, some of the reference numerals representing the various components shown in Figure 1 are omitted. The electric heated tobacco product 30 is used by inserting the non-combustion heated tobacco 10 described above into contact with a heater member 21 located inside the electric heated device 20. The electric heated device 20 has, for example, a battery unit 22 and a control unit 23 inside a resin body 24. When the non-combustion heated tobacco 10 is inserted into the electric heated device 20, the outer surface of the tobacco rod portion 11 comes into contact with the heater member 21 of the electric heated device 20, and eventually the entire outer surface of the tobacco rod portion 11 and a part of the outer surface of the tip paper come into contact with the heater member 21. The heater member 21 of the electric heated device 20 generates heat under control by the control unit 23. This heat is transferred to the tobacco rod portion 11 of the non-combustion heated tobacco 10, causing the aerosol base material and flavor components contained in the tobacco filling of the tobacco rod portion 11 to volatilize.

[0093] The heater member 21 may be, for example, a sheet heater, a flat plate heater, or a cylindrical heater. A sheet heater is a flexible sheet-shaped heater, such as a heater containing a film of a heat-resistant polymer such as polyimide (thickness of about 20 to 225 μm). A flat plate heater is a rigid flat plate-shaped heater (thickness of about 200 to 500 μm), such as a heater having a resistance circuit on a flat plate substrate with that portion as the heating element. A cylindrical heater is a hollow or solid cylindrical heater (thickness of about 200 to 500 μm), such as a heater having a resistance circuit on the outer surface of a cylinder made of metal or the like with that portion as the heating element. Also, there are rod-shaped heaters and cone-shaped heaters made of metal or the like that have a resistance circuit inside with that portion as the heating element. The cross-sectional shape of the cylindrical heater may be a circle, an ellipse, a polygon, a rounded polygon, etc. When heating the outer surface of a non-combustion heated cigarette 10, as shown in Figure 2, the above-mentioned sheet heater, flat plate heater, and cylindrical heater can be used. On the other hand, in the case of a non-combustion heated tobacco product 10 where heating is performed from the inside of the tobacco rod portion 11, as shown in Figure 3, the above-mentioned flat plate heater, columnar heater, or cone-shaped heater can be used. The length of the heater member 21 in the longitudinal direction can be within the range of L ± 5.0 mm, where L is the length of the tobacco rod portion 11 in the longitudinal direction. From the viewpoint of sufficiently transferring heat to the tobacco rod portion 11 and sufficiently volatilizing the aerosol base material and flavor components contained in the tobacco filling, i.e., aerosol delivery, the length of the heater member 21 in the longitudinal direction is preferably L mm or more. From the viewpoint of suppressing the generation of components that undesirably affect the flavor, it is preferable that the length is L + 0.5 mm or less, L + 1.0 mm or less, L + 1.5 mm or less, L + 2.0 mm or less, L + 2.5 mm or less, L + 3.0 mm or less, L + 3.5 mm or less, L + 4.0 mm or less, L + 4.5 mm or less, or L + 5.0 mm or less.

[0094] When the heater and the composite sheet come into contact, the contact area is not particularly limited. However, from the viewpoint of efficiently generating the flavor derived from the tobacco sheet while suppressing charring, if the area ratio of the area where the heater and the tobacco rod portion come into contact is taken as 100%, then it is preferable that the area where the heater and the first surface of the composite sheet come into contact is 15% or more, more preferably 50% or more, even more preferably 60% or more, and particularly preferably 70% or more. Furthermore, there is no particular upper limit, and it may be 100%, 100% or less, less than 100%, 99% or less, 95% or less, 90% or less, 85% or less, or 80% or less. It is preferable that this is filled in a manner in which the tobacco rod portion 11 in the non-combustion heated tobacco 10 is heated from the inside, as shown in Figure 3.

[0095] The heating intensity, such as the heating time and heating temperature of the non-combustion heated tobacco 10 by the heater element 21, can be set in advance for each electric heated tobacco product 30. For example, after inserting the non-combustion heated tobacco 10 into the electric heating device 20, preheating for a certain period of time can be performed to heat the outer surface temperature of the portion of the non-combustion heated tobacco 10 inserted into the electric heating device 20 to X (°C), and then the temperature can be set in advance to be maintained at a constant temperature of X (°C) or less. From the viewpoint of the amount of components generated by heating delivered, X (°C) is preferably between 80°C and 400°C. Specifically, the temperature can be set to 80°C, 90°C, 100°C, 110°C, 120°C, 130°C, 140°C, 150°C, 160°C, 170°C, 180°C, 190°C, 200°C, 210°C, 220°C, 230°C, 240°C, 250°C, 260°C, 270°C, 280°C, 290°C, 300°C, 310°C, 320°C, 330°C, 340°C, 350°C, 360°C, 370°C, 380°C, 390°C, or 400°C. Heating by the heater member 21 causes vapor generated from the tobacco rod portion 11, containing components derived from the aerosol base material and components derived from flavoring components, to reach the user's oral cavity through the mouthpiece portion 14, which is composed of a cooling segment 12 and a filter segment 13.

[0096] The opening V provided in the cooling segment 12 is preferably located closer to the mouthpiece end than the mouthpiece end of the area in contact with the electric heating device 20, from the viewpoint of promoting the inflow of air from the outside and suppressing the accumulation of components generated by heating and air within the cooling segment 12. Furthermore, the insertion opening for the non-combustion heated tobacco 10 of the electric heating device 20 may be tapered to facilitate the insertion of the non-combustion heated tobacco 10.

[0097] The present invention will be described in more detail below with reference to examples. However, the present invention is not limited to the following examples.

[0098] <Experiment 1> [Manufacturing of Composite Sheets] (Example 1-1) Raw materials were prepared so that the mixing ratio (% D.B.) by dry mass was as shown in Table 1 below. Next, the raw materials and water were added so that the solid-liquid ratio (solid:liquid) was 1:4, and the mixture was stirred and mixed in a homogenizer (AS ONE, Homogenizer HG-200). The mixed slurry was cast onto an iron plate to a thickness of 1.5 mm and dried in an oven heated to 80°C (Koyo Thermo Systems Co., Ltd., KLO45M) for 2 hours to produce tobacco sheets (thickness 0.29 mm; basis weight 0.3 mg / mm²). ２ A glycerin solution with a concentration of 29% W.B. (35% D.B.) and a moisture content of 19% W.B. was prepared. The resulting tobacco sheet was cut into 30 mm x 30 mm pieces and used as chip paper (basis weight 48 g / m²). ２ A composite sheet was manufactured by placing a tobacco sheet (approximately 0.05 mm thick) on top of it.

[0099]

[0100] The tobacco extracts shown in Table 1 were prepared by the following method: Tobacco leaves were mixed with water to achieve a solid-liquid ratio of 1:15, stirred at 60°C and 150 rpm for 1 hour, filtered to remove solids, and the liquid phase was recovered. The recovered liquid phase was then concentrated using an evaporator to obtain the tobacco extract.

[0101] (Reference Example 1-1) A composite sheet was manufactured in the same manner as in Example 1-1, except that the chip paper was changed to Kimwipes (thickness 0.13-0.2 mm).

[0102] (Example 1-2) A composite sheet was manufactured in the same manner as in Example 1-1, except that the chip paper was changed to a thermosetting shellac sheet (thickness 0.3-0.45 mm). The thermosetting shellac sheet described above was prepared by coating a Kimwipe (30 mm x 30 mm) with an ethanol solution (shellac concentration 10% by mass) obtained by dissolving shellac (AS-25 manufactured by Gifu Shellac Manufacturing Co., Ltd., and the same applies to the shellac described below) in ethanol, and then baking it on a hot plate heated to 350°C for 20 minutes. The ethanol solution was impregnated into the Kimwipe, and there was no difference between the coated side and the opposite side.

[0103] (Comparative Example 1-1) An ethanol solution (HPC concentration of 5% by weight) obtained by dissolving HPC (CELNY-L manufactured by Nippon Soda Co., Ltd., and the same applies to HPCs shown hereafter) in ethanol was applied to one side surface of the slurry sheet prepared in Procedure 1-1, and a composite sheet (HPC layer thickness of 0.05 to 0.2 mm) was produced by drying it in an oven heated to 80°C for 10 minutes.

[0104] (Reference Example 1-2) A composite sheet was manufactured in the same manner as in Example 1-1, except that the chip paper was changed to a non-thermal-curing shellac sheet (thickness 0.3-0.45 mm). The non-thermal-curing shellac sheet was prepared by coating a Kimwipe with an ethanol solution (shellac concentration 10% by mass) in which shellac was dissolved in ethanol, and drying it in an oven heated to 80°C for 10 minutes. The ethanol solution was impregnated into the Kimwipe, and there was no difference between the coated side and the opposite side.

[0105] Hereinafter, in this specification, objects that are in contact with the tobacco sheet, such as chip paper, thermosetting shellac sheet, HPC coating layer, and non-thermosetting shellac sheet, will be referred to as adjacent layers.

[0106] [Evaluation of charring] Using each of the composite sheets described above, the following (Operation 1) or (Operation 1'), (Operation 2), and (Operation 3) were performed, and it was evaluated whether or not state A in (Operation 3) was observed. In this experiment, each state was evaluated as "A" if it was not observed and "B" if it was observed. The results of this observation are shown in Table 2 and Figure 6. Figure 6 is a photograph of the aluminum foil observed in (Operation 3). The inventors believe that this evaluation of charring can be used as a substitute for the evaluation of charring in Experiment 1 described above. (Operation 1) Prepare an aluminum foil (3 cm x 3 cm) with a thickness of 12 μm or less and a heater. Arrange the components such that the aluminum foil is sandwiched between the first surface of the composite sheet on the side where the adjacent layer exists relative to the tobacco sheet layer and the heater, and from bottom to top, the components are the heater, aluminum foil, and composite sheet. Place a 2.7 g metal mesh (mesh size 2 mm) with an area large enough to cover the entire surface of the composite sheet on top of the composite sheet, and place a lead weight (φ approximately 2 cm) of about 35 g on top of the metal mesh and apply pressure. (Operation 2) Heat the heater within a temperature range of 300 °C ± 5 °C and hold for 300 seconds. (Operation 3) After the above heat treatment, observe the aluminum foil in (Operation 1) and check whether the following conditions A and B are observed. Condition A: A state in which solid matter with a maximum height of 100 μm or more is attached to the aluminum foil in (Operation 1). State B: In the image of the aluminum foil captured in (Operation 1) above, when the composite sheet contact area is 100%, the area of ​​the portion where the sum of RGB values ​​is less than or equal to (sum of RGB values ​​of the blank portion - 100) is 1% or more.

[0107] The maximum height of the solid object in state A, and the image capture and RGB sum evaluation in state B, were performed using the KEYENCE ONE-SHOT 3D VR series (VR5000). Similarly, in the evaluation of states A and B from Experiment 2 onward, the maximum height of the solid object, and the image capture and RGB sum evaluation in state B were performed using the KEYENCE ONE-SHOT 3D VR series (VR5000).

[0108]

[0109] Table 2 and Figure 6 show that placing chip paper or a thermosetting shellac sheet between the heat source and the tobacco sheet can prevent charring. This is thought to be because it prevents the components that cause charring (a complex mixture of water, glycerin, tobacco components, etc.) from reaching the heater, indicating that the chip paper or thermosetting shellac sheet functions as a permeability-reducing layer. Specifically, the chip paper is thought to have prevented charring by absorbing the evaporated water at the start of heating, preventing it from reaching the heater. In the case of a non-thermosetting shellac sheet, since shellac has a softening point of around 70°C, it is thought that glycerin and water from the tobacco sheet mixed during heating, allowing the components that cause charring to reach the heater and cause charring. In addition, the thermosetting shellac sheet is thought to have prevented charring because it formed a component-impermeable layer, preventing water and glycerin from permeating from the raw material to the heater, and also because it had sufficient heat resistance.

[0110] <Experiment 2> [Sample Preparation] (Example 2-1) A composite sheet was prepared in the same manner as in Example 1-2. This composite sheet was wrapped around a blade heater with the adjacent layers facing inward, a Cambridge filter was wrapped around the outside of it, and then polyimide tape was wrapped around the outside of that to prepare the sample. In this case, the composite sheet was wrapped around the blade heater so that the transmission reduction layer was in contact with the blade heater. As for the blade heater, a square-shaped blade heater with a cross-section perpendicular to the axial direction of 5.5 mm × 0.35 mm was used.

[0111] [Evaluation of charring] Using each of the above samples, the following (Operation 1) and (Operation 2) were performed, and it was evaluated whether or not states A and B in (Operation 2) below were observed. In this experiment, each state was evaluated as "A" if it was not observed and "B" if it was observed. The results of this observation are shown in Table 3 and Figure 7. The inventors believe that this evaluation of charring can be used as a substitute for the evaluation of charring in Experiment 1 above. Figure 7 is a photograph of the blade heater observed in (Operation 2). (Operation 1) The blade heater is heated in a temperature range of 280°C ± 5°C and held for 300 seconds. (Operation 2) After the above heat treatment, the blade heater is removed from the sample, and the surface of the blade heater is observed to check whether or not states A and B below are observed. State A: A state in which solid matter with a maximum height of 100 μm or more is attached to the blade heater in (Operation 1) above. State B: In the image of the blade heater in (Operation 1) described above, when the composite sheet contact area is 100%, the area of ​​the portion where the sum of RGB values ​​is less than or equal to (sum of RGB values ​​of the blank portion - 100) is 1% or more.

[0112] [Evaluation of Sheet Peeling] The blade heater was heated within a temperature range of 280°C ± 5°C and held for 300 seconds. After cooling, the blade heater was removed from the sample and observed to see if any sheet peeling had occurred. In this experiment, samples in which sheet peeling was possible (no sample adhesion was observed on the blade heater) were evaluated as "A", and samples in which peeling was not possible (sample adhesion was observed on the blade heater) were evaluated as "B". The results of this evaluation are shown in Table 3.

[0113]

[0114] Table 3 and Figure 7 show that even in blade heaters, the thermosetting shellac sheet functions as a permeation-reducing layer, preventing scorching.

[0115] <Experiment 3> [Manufacturing of Composite Sheets] (Example 3-1) An ethanol solution (shellac concentration 10% by mass) obtained by dissolving shellac in ethanol was coated onto a tobacco sheet prepared in the same manner as the tobacco sheet in Example 1-1, and air-dried at 60-70°C for 1 minute. Then, calcium carbonate (Sankyo Seifun Co., Ltd., CalC F #9860, the same applies to the calcium carbonates shown hereafter) was sprinkled onto the surface of the coated shellac solution, and the calcium carbonate was fixed by air-drying at 60-70°C for 4 minutes to produce a composite sheet (coat layer thickness (thickness of shellac and calcium carbonate) 0.1-0.4 mm).

[0116] (Example 3-2) A solution was prepared by dispersing calcium carbonate (Sankyo Seifun Co., Ltd., CalC F #9860) in an ethanol solution (HPC concentration 5% by mass) obtained by dissolving HPC in ethanol. This solution was coated onto a tobacco sheet prepared in the same manner as in Example 1-1, and air-dried at 60-70°C for 5 minutes to produce a composite sheet (coat layer thickness 0.1-0.4 mm).

[0117] (Example 3-3) A solution was prepared by dispersing calcium carbonate in an ethanol solution (shellac concentration 10% by weight, HPC concentration 5% by weight) obtained by dissolving shellac and HPC in ethanol. This solution was coated onto a tobacco sheet prepared in the same manner as in Example 1-1, and air-dried at 60-70°C for 5 minutes to produce a composite sheet (coat layer thickness 0.1-0.4 mm).

[0118] (Comparative Example 3-1) An ethanol solution (HPC concentration 5% by mass) obtained by dissolving HPC in ethanol was coated onto a tobacco sheet prepared in the same manner as the tobacco sheet in Example 1-1, and a composite sheet (coating layer thickness 0.05-0.2 mm) was produced by air drying at 60-70°C for 5 minutes.

[0119] [Evaluation of charring] The charring was evaluated using the same method as in Experiment 1. The results of this observation are shown in Table 4 and Figure 8. Figure 8 is a photograph of the aluminum foil observed in (Procedure 3).

[0120]

[0121] Table 4 and Figure 8 show that the layer containing calcium carbonate functions as a permeability-reducing layer and can prevent charring. Specifically, in Example 3-2, neither state A nor state B was observed, suggesting that even in the presence of HPC, calcium carbonate absorbed the charring-causing components (a complex mixture of water, glycerin, tobacco components, etc.), preventing them from reaching the heater. In Example 3-1, since unheat-cured shellac was used, there was a concern about charring originating from the shellac. However, by using it in combination with calcium carbonate, it is thought that charring was prevented by absorbing the charring-causing components, including the shellac. Furthermore, it is thought that the heat curing of the shellac during heating created an impermeable layer, thus suppressing the movement of charring components derived from tobacco raw materials. In Example 3-3, since both unheat-cured shellac and HPC were present as charring-causing components in the permeability-reducing layer, it is thought that the absorption of calcium carbonate could not keep up, resulting in the observation of state B. Although condition B was observed, condition A was not observed because the anti-burn function was deemed sufficient.

[0122] <Experiment 4> [Manufacturing of composite sheets]

[0123] (Example 4-1) An ethanol solution (HPC concentration 4.8% by mass, calcium carbonate concentration 20% by mass) was prepared by dissolving HPC and calcium carbonate in ethanol. This solution was coated onto the surface of a tobacco sheet prepared in the same manner as in Example 1-1, and dried in an oven heated to 80°C for 5 minutes to obtain a composite sheet (basis weight of the coating layer: 170-180 g / m²). ２ We manufactured coatings with a thickness of 0.05 to 2 mm.

[0124] (Example 4-2) An ethanol solution (HPC-L concentration 3.8% by mass, calcium carbonate concentration 30% by mass) was prepared by dissolving HPC-L (manufactured by Nippon Soda Co., Ltd., CELNY-L; the same applies to HPC-L below) and calcium carbonate in ethanol. This solution was coated onto the surface of a tobacco sheet prepared in the same manner as in Example 1-1, and dried in an oven heated to 80°C for 5 minutes to form a composite sheet (basis weight of the coating layer: 60-70 g / m²). ２ We manufactured coatings with a thickness of 0.05 to 2 mm.

[0125] (Example 4-3) An ethanol solution (HPC-L concentration 3.1% by mass, calcium carbonate concentration 40% by mass) was prepared by dissolving HPC-L and calcium carbonate in ethanol. This solution was coated onto the surface of a tobacco sheet prepared in the same manner as in Example 1-1, and dried in an oven heated to 80°C for 5 minutes to produce a composite sheet (basis weight of the coating layer: 130-140 g / m²). ２ We manufactured coatings with a thickness of 0.05 to 2 mm.

[0126] [Evaluation of charring] The charring was evaluated using the same method as in Experiment 1. The results of this observation are shown in Table 5 and Figure 9. Figure 9 is a photograph of the aluminum foil observed in (Procedure 3).

[0127]

[0128] Table 5 and Figure 9 show that the calcium carbonate layer functions as a permeation-reducing layer, preventing scorching.

[0129] <Experiment 5> [Sample Preparation] (Example 5-1) A tobacco sheet was prepared in the same manner as the tobacco sheet in Example 1-1, except that the size was set to 10 mm x 8 mm. Between the tobacco sheet and a pin heater (a circular shape with a cross-section perpendicular to the axial direction having a diameter of 2.5 mm) was placed a thermosetting shellac sheet (basis weight 50-100 g / m²). ２A composite sheet (0.16-0.2 mm thick) was placed, a Cambridge filter was wrapped around it, and then polyimide tape was wrapped around the outside of the filter, and a heating test was conducted. During this test, the composite sheet was wrapped around the pin heater so that the transmission reduction layer was in contact with the pin heater. For the thermosetting shellac sheet, an ethanol solution (shellac concentration 10% by mass) was prepared by dissolving shellac in ethanol and then applying it to high-permeability paper (basis weight 20-30 g / m²). ２ The sheets were coated to a thickness of 0.05 to 0.1 mm and baked on a hot plate heated to 350°C for 20 minutes. At this time, the basis weight of the thermosetting shellac sheet after baking was 50 to 100 g / m². ２ The amount of coating was adjusted to achieve this result.

[0130] (Example 5-2) The component placed between the tobacco sheet and the pin heater is made of paper containing 50% by mass of calcium carbonate (basis weight 60-65 g / m²). ２ The heating test was carried out in the same manner as in Example 5-1, except that the thickness was changed to 0.06 to 0.7 mm.

[0131] (Example 5-3) An ethanol solution (HPC concentration 5% by mass) obtained by dissolving HPC in ethanol was coated onto a tobacco sheet prepared in the same manner as the tobacco sheet in Example 1-1, except that the size was 10 mm x 8 mm. The HPC coating layer was then air-dried at 60-70°C for 5 minutes to create an HPC coating layer on one side surface of the tobacco sheet. Furthermore, a solution was prepared by dispersing calcium carbonate in an ethanol solution (HPC concentration 5% by mass) obtained by dissolving HPC in ethanol. This solution was coated onto the HPC coating layer and air-dried at 60-70°C for 5 minutes to produce a composite sheet. This composite sheet was wrapped around a pin heater with the transmission reduction layer on the inside, a Cambridge filter was wrapped around the outside of the composite sheet, and polyimide tape was wrapped around the outside of the Cambridge filter to produce a sample. At this time, the composite sheet was wrapped around the pin heater so that the transmission reduction layer was in contact with the pin heater. As the pin heater, a circular pin heater with a cross-section perpendicular to the axial direction having a diameter of 2.5 mm was used.

[0132] (Example 5-4) The raw materials were prepared so that the mixing ratio (% D.B.) by dry mass was as shown in Table 6 below. Next, the raw materials and water were added so that the solid-liquid ratio (solid:liquid) was 1:4, and the mixture was stirred and mixed using a homogenizer (AS ONE, Homogenizer HG-200). The mixed slurry was cast onto an iron plate to a thickness of 1.5 mm, dried in an oven heated to 80°C for 2 hours, and then used to make tobacco sheets (thickness 0.2-0.3 mm; basis weight 0.3-0.5 mg / mm²). ２ A glycerin sheet with a concentration of 12.5–14% W.B. (15% D.B.) and a moisture content of 10–15% W.B. was prepared. This tobacco sheet was wrapped around a pin heater, a Cambridge filter was wrapped around the outside of the sheet, and then polyimide tape was wrapped around the outside of the filter to produce a sample. In this process, the composite sheet was wrapped around the pin heater so that the permeability reduction layer was in contact with the pin heater. The pin heater used was a circular pin heater with a cross-section perpendicular to the axial direction having a diameter of 2.5 mm. The powdered cellulose, binder, and glycerin in Table 6 were the same as those used in the production of the tobacco sheet material in Example 1-1.

[0133]

[0134] [Evaluation of charring] The conditions for the evaluation of charring in (Operation 1) in Experiment 2 were the same as in Experiment 2, except that the temperature range of the blade heater's heating temperature was changed to 280°C ± 5°C. The results of this observation are shown in Table 6. In Example 5-4, since an absorbent tobacco sheet was used instead of a composite sheet, the evaluation of charring was performed regardless of the orientation of the sheet.

[0135]

[0136] Examples 5-1, 5-2, and 5-3 in Table 7 show that even in pin heaters, the thermosetting shellac sheet and the layer containing calcium carbonate function as a permeability-reducing layer and can prevent scorching. In Example 5-4, since an adsorbent-containing tobacco sheet was used instead of a composite sheet, there was concern about the occurrence of scorching originating from tobacco. However, it is thought that the calcium carbonate contained in the tobacco absorbed the scorching-causing components, preventing them from reaching the heater. This shows that scorching can be suppressed even with an adsorbent-containing tobacco sheet.

[0137] After manufacturing the tobacco rod portion using the above-mentioned composite sheet or absorbent tobacco sheet and rolling paper, a non-combustion heated tobacco product could be manufactured using the mouthpiece portion and tip paper.

[0138] As described above, the present invention provides a non-combustion heated tobacco product that can suppress the migration of charring-causing components contained in the tobacco material to the surrounding components, and an electrically heated tobacco product using the non-combustion heated tobacco product.

[0139] 10 Tobacco product 11 Tobacco rod section 12 Cooling segment 13 Filter segment 14 Mouthpiece section 15 Tip paper V-hole 20 Electric heating device 21 Heater component 22 Battery unit 23 Control unit 24 Body 30 Electric heated tobacco product 41 Rolling paper 42 Tobacco sheet layer 43 Permeation reduction layer

Claims

1. A non-combustion heated tobacco product comprising a tobacco rod portion and a mouthpiece portion, wherein the tobacco rod portion has a composite sheet comprising a tobacco sheet layer containing at least one component selected from water and glycerin, and a permeability-reducing layer capable of reducing the permeability of the component.

2. The non-combustion heated tobacco according to claim 1, wherein the composite sheet satisfies the following condition 1-1. (Condition 1-1) When the following operations 1-1, 1-1', 2-1, and 3-1 are performed using the composite sheet, state A-1 in operation 3-1 is not observed. (Operation 1-1) Prepare an aluminum foil with a thickness of 12 μm or less and a heater, and arrange the aluminum foil, heater, and composite sheet so that the aluminum foil is sandwiched between the first surface of the composite sheet on the side where the transmission reduction layer is present relative to the tobacco sheet layer and the heater. (Operation 1-1') Prepare a heater and arrange the heater and composite sheet so that the surface of the composite sheet on the side where the transmission reduction layer is present relative to the tobacco sheet layer and the heater are adjacent to each other. (Operation 2-1) Heat the heater in a temperature range of 335°C or higher and 365°C or lower and hold for 300 seconds. (Operation 3-1) After the above heat treatment, observe the aluminum foil in (Operation 1-1) or the heater in (Operation 1-1') and check whether the following condition A-1 is observed. Condition A-1: ​​A state in which solid matter with a maximum height of 100 μm or more is attached to the aluminum foil in (Operation 1-1) or the heater in (Operation 1-1').

3. The non-combustion heated tobacco product according to claim 2, wherein the composite sheet satisfies the following condition 1-1': (Condition 1-1') When the above-mentioned (operation 1-1) or (operation 1-1'), (operation 2-1), and (operation 3-1) are performed using the composite sheet, the following condition B-1 is not observed. Condition B-1: In the image of the aluminum foil in (operation 1-1) or the heater in (operation 1-1'), when the contact area of ​​the composite sheet is 100%, the area of ​​the portion where the sum of RGB values ​​is less than or equal to (sum of RGB values ​​of the blank portion - 100) is 1% or more.

4. The non-combustion heated tobacco product according to any one of claims 1 to 3, wherein the permeation-reducing layer is a layer comprising at least one selected from shellac, calcium carbonate, sodium silicate, cellulose, and activated carbon, or a metal foil.

5. The non-combustion heated tobacco according to any one of claims 1 to 4, wherein the composite sheet has an adhesive layer between the tobacco sheet layer and the permeability reduction layer.

6. The non-combustion heated tobacco product according to claim 5, wherein the adhesive layer comprises at least one component selected from the group consisting of hydroxypropyl cellulose (HPC) and polyvinyl acetate.

7. The non-combustion heated tobacco according to any one of claims 1 to 6, wherein the basis weight of the transmission reduction layer is 6 gsm or more and 700 gsm or less.

8. The non-combustion heated tobacco product according to any one of claims 1 to 7, wherein the thickness of the transmission-reducing layer is 0.05 mm or more and 1 mm or less.

9. The non-combustion heated tobacco according to any one of claims 1 to 8, wherein the composite sheet is cylindrical in shape, and the axial direction of the cylindrical shape is substantially parallel to the ventilation direction, and the first surface of the composite sheet on the side where the permeability reduction layer is present is the inner or outer surface relative to the tobacco sheet.

10. An electric heated tobacco product comprising: an electric heating device comprising a heater member, a battery unit that serves as a power source for the heater member, and a control unit for controlling the heater member; and a non-combustion heated tobacco according to any one of claims 1 to 9, which is inserted so as to be in contact with the heater member and the first surface of the composite sheet.

11. The non-combustion heated tobacco product according to claim 10, wherein, when the ratio of the area of ​​the area in contact between the heater and the tobacco rod portion is taken as 100%, the area of ​​the area in contact between the heater and the first surface of the composite sheet is 50% or more.

12. A non-combustion heated tobacco product comprising a tobacco rod portion and a mouthpiece portion, wherein the tobacco rod portion has an absorbent tobacco sheet containing at least one component selected from water and glycerin and an absorbent, and the content of the absorbent in the absorbent tobacco sheet is 50% by weight or more.

13. The non-combustion heated tobacco product according to claim 12, wherein the absorbent material comprises at least one selected from the group consisting of calcium carbonate, sodium silicate, and activated carbon.

14. The non-combustion heated tobacco according to claim 12 or 13, wherein the absorbent tobacco sheet satisfies the following conditions (1-2). (Condition 1-2) When the following (operation 1-2) or (operation 1-2'), (operation 2-2), and (operation 3-2) are performed using the absorbent tobacco sheet, state A-2 in the following (operation 3-2) is not observed. (operation 1-2) Prepare an aluminum foil with a thickness of 12 μm or less and a heater, and arrange the aluminum foil, the heater, and the absorbent tobacco sheet so that the aluminum foil is sandwiched between the absorbent tobacco sheet and the heater. (operation 1-2') Prepare a heater, and arrange the heater and the absorbent tobacco sheet so that the absorbent tobacco sheet and the heater are adjacent to each other. (operation 2-2) Heat the heater in a temperature range of 335°C or higher and 365°C or lower, and hold for 300 seconds. (Operation 3-2) After the above heat treatment, observe the aluminum foil in (Operation 1-2) or the heater in (Operation 1') and check whether the following condition A-2 is observed. Condition A-2: A state in which solid matter with a maximum height of 100 μm or more is attached to the aluminum foil in (Operation 1-2) or the heater in (Operation 1-2').

15. The non-combustion heated tobacco product according to claim 14, wherein the composite sheet satisfies the following condition 2-2'. (Condition 2-2') When the above (operation 1-2) or (operation 1-2'), (operation 2-2), and (operation 3-2) are performed using the composite sheet, the following state B-2 is not observed. State B-2: In the image of the aluminum foil in (operation 1-1) or the heater in (operation 1-2'), when the contact area of ​​the composite sheet is 100%, the area of ​​the portion where the sum of RGB values ​​is less than or equal to (sum of RGB values ​​of the blank portion - 100) is 1% or more.

16. The non-combustion heated tobacco according to any one of claims 12 to 15, wherein the shape of the absorbent material-containing tobacco sheet is cylindrical, and the axial direction of the cylindrical shape is arranged to be substantially parallel to the ventilation direction.

17. An electric heated tobacco product comprising: an electric heating device comprising a heater member, a battery unit that serves as a power source for the heater member, and a control unit for controlling the heater member; and a non-combustion heated tobacco according to any one of claims 12 to 16, in which the heater member and the calcium carbonate-containing tobacco sheet are inserted so as to be in contact with each other.

18. The non-combustion heated tobacco product according to claim 17, wherein, when the area ratio of the area in contact between the heater and the tobacco rod portion is taken as 100%, the area in contact between the heater and the calcium carbonate-containing tobacco sheet is 50% or more.

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