KR20240067126A - Tobacco sheet for non-combustion heating type flavor inhaler, non-combustion heating type flavor inhaler, and non-combustion heating type flavor inhalation system - Google Patents

Abstract

The present invention relates to a tobacco sheet for a non-combustible heated flavor inhaler comprising tobacco powder having a cumulative 90% particle size (D90) of 200 μm or more in the volume-based particle size distribution measured by dry laser diffraction method.

Description

Tobacco sheet for non-combustion heating type flavor inhaler, non-combustion heating type flavor inhaler, and non-combustion heating type flavor inhalation system

The present invention relates to a tobacco sheet for a non-combustion heating type flavor inhaler, a non-combustion heating type flavor inhaler, and a non-combustion heating type flavor inhalation system.

In a combustion type flavor inhaler (cigarette), flavor is obtained by burning a tobacco filling containing leaf tobacco. As an alternative to the combustion type flavor inhaler, a non-combustion heating type flavor inhaler has been proposed in which flavor is obtained by heating a flavor source such as a cigarette sheet instead of burning it. The heating temperature of the non-combustion heating type flavor inhaler is lower than the combustion temperature of the combustion type flavor inhaler, for example, about 400° C. or lower. In this way, since the heating temperature of the non-combustion heating type flavor inhaler is low, an aerosol generator can be added to the flavor source in the non-combustion heating type flavor inhaler from the viewpoint of increasing the amount of smoke. The aerosol generator is vaporized by heating and generates an aerosol. Since the aerosol is supplied to the user along with flavor components such as tobacco components, the user can obtain sufficient flavor.

The non-combustion heated flavor inhaler may have, for example, a tobacco-containing segment filled with a tobacco sheet, a cooling segment, and a filter segment. The axial length of the tobacco-containing segment of a non-combustion heating type flavor inhaler is usually shorter than the axial length of the tobacco-containing segment of a combustion type flavor inhaler in relation to the heating heater. Therefore, in the non-combustion heating type flavor inhaler, a large amount of tobacco sheets, etc. are filled in the section of the short tobacco-containing segment to ensure the amount of aerosol generated during heating. In order to fill a large amount of tobacco sheets, etc. within a short period, tobacco sheets with low bulkiness, that is, high density, are usually used in non-combustion heating type flavor inhalers. In addition, the expansion property is a value representing the volume when a piece of a tobacco sheet of a certain mass is compressed at a certain pressure for a certain time. For example, Patent Documents 1 and 2 disclose a tobacco sheet used in a non-combustion heating type flavor inhaler.

Japanese Patent Publication No. 5969923 International Publication No. 2020/058814

However, the present inventors found that when considering the heating method or heater's heating ability and aerosol generation, the total heat capacity of the tobacco-containing segment increases when a tobacco sheet with low expansion (high density) is used, so the ability of the heating method or heater Accordingly, it was found that tobacco sheets filled with tobacco-containing segments did not contribute sufficiently to aerosol generation. In order to solve this problem, it is conceivable to reduce the total heat capacity of the tobacco-containing segment.

The present inventors, in order to reduce the total heat capacity of the tobacco-containing segment, (1) reduce the specific heat of the tobacco raw material contained in the tobacco sheet, (2) use a tobacco sheet with high swelling (low density). reviewed. However, since it is difficult to reduce the specific heat of the tobacco raw material itself with respect to (1), it was considered effective to reduce the total heat capacity of the tobacco-containing segments through (2). Therefore, there is a need to develop a tobacco sheet with high expansion properties (low density) that can be suitably used in a non-combustion heating type flavor inhaler.

The purpose of the present invention is to provide a tobacco sheet for a non-combustion heating type flavor inhaler with high expansion properties, a non-combustion heating type flavor inhaler comprising the tobacco sheet, and a non-combustion heating type flavor inhalation system.

The present invention includes the following embodiments.

Mode 1

A tobacco sheet for a non-combustible heated flavor inhaler, comprising tobacco powder having a cumulative 90% particle size (D90) of 200 ㎛ or more in the volume-based particle size distribution measured by dry laser diffraction method.

Mode 2

The sheet according to aspect 1, wherein the sheet has a density of 1.0 g/cm ³ or less.

Mode 3

The sheet according to aspect 1 or 2, which is a pressure formed sheet.

Mode 4

moisturizer,

With a binder,

It further contains either or both flavoring agents or molding aids,

The sheet according to any one of Embodiments 1 to 3, wherein the air permeability is greater than 0 Coresta unit.

Mode 5

The sheet according to aspect 4, wherein the air permeability is 500 Coresta units or more.

Mode 6

A tobacco-containing segment comprising a tobacco sheet for a non-combustible heated flavor inhaler according to any one of aspects 1 to 5.

A non-combustion heating type flavor aspirator having a.

Mode 7

A non-combustion heating type flavor inhaler according to Embodiment 6,

Heating device for heating the tobacco-containing segments

A non-combustion heated flavor aspiration system comprising a.

According to the present invention, it is possible to provide a tobacco sheet for a non-combustion heating type flavor inhaler with high expansion properties, a non-combustion heating type flavor inhaler comprising the tobacco sheet, and a non-combustion heating type flavor inhalation system.

Fig. 1 is a cross-sectional view showing an example of a non-combustion heating type flavor inhaler according to the present embodiment.
Figure 2 is an example of the non-combustion heating type flavor aspiration system according to the present embodiment, (a) the state before inserting the non-combustion heating type flavor aspirator into the heating device, (b) the non-combustion heating type flavor aspirator being inserted into the heating device. This is a cross-sectional view showing the state of insertion and heating.
Figure 3 is a diagram showing one aspect of a tobacco segment.
Figure 4 is a diagram showing a release profile.

[Cigarette sheet for non-combustible heated flavor inhaler]

The tobacco sheet (hereinafter also referred to as “cigarette sheet”) for a non-combustible heated flavor inhaler according to the present embodiment has a cumulative 90% particle size (D90) of 200 in the volume-based particle size distribution measured by dry laser diffraction method. Includes tobacco powder larger than ㎛.

In the tobacco sheet according to the present embodiment, the D90 of the tobacco powder measured by dry laser diffraction is 200 μm or more, so the voids between the tobacco powders in the tobacco sheet are large, and the voids contribute to improving the swelling properties of the tobacco sheet. It is assumed that there is. In addition, the tobacco sheet according to the present embodiment preferably further contains an aerosol generator or molding agent, and by keeping the mixing ratio of these within a predetermined range, the puffiness of the tobacco sheet is further improved.

(tobacco powder)

Tobacco powder contained in the tobacco sheet according to the present embodiment includes, for example, leaf tobacco, stems, remaining branches, etc. These may be used one type, or two or more types may be used together. These can be used as tobacco powder by cutting them into a predetermined size. As for the size of the tobacco powder, the cumulative 90% particle size (D90) in the volume-based particle size distribution measured by dry laser diffraction is 200 μm or more, preferably 350 μm or more, and more preferably 500 μm or more. The upper limit of the range of D90 is not particularly limited, but may be, for example, 2000 μm or less.

In addition, as for the size of the tobacco powder, from the viewpoint of further improving the swelling properties of the tobacco sheet, it is preferable that the cumulative 50% particle diameter (D50) in the volume-based particle size distribution measured by dry laser diffraction is 40 ㎛ or more, It is more preferable that it is 100㎛ or more, and it is even more preferable that it is 200㎛ or more. The upper limit of the range of D50 is not particularly limited, but may be, for example, 1000 μm or less. In addition, in this embodiment, the measurement of D90 and D50 by dry laser diffraction can be performed using, for example, Mastersizer (brand name, manufactured by Spectris Co., Ltd., Malvern Panalytical Division).

The proportion of tobacco powder contained in 100% by mass of the tobacco sheet is preferably 45 to 95% by mass. When the proportion of the tobacco powder is 45% by mass or more, a tobacco aroma can be sufficiently generated when heated. In addition, when the proportion of the tobacco powder is 95% by mass or less, a sufficient amount of aerosol generator or molding agent can be contained. The proportion of the tobacco powder is more preferably 50 to 93% by mass, more preferably 55 to 90% by mass, and particularly preferably 60 to 88% by mass.

(Aerosol generator)

It is preferable that the tobacco sheet according to this embodiment further contains an aerosol generator from the viewpoint of increasing the amount of smoke when heated. Examples of aerosol generators include glycerin, propylene glycol, and 1,3-butanediol. These may be used one type, or two or more types may be used together.

When the tobacco sheet contains an aerosol generator, the proportion of the aerosol generator contained in 100 mass% of the tobacco sheet is preferably 4 to 50 mass%. When the proportion of the aerosol generator is 4% by mass or more, sufficient aerosol can be generated during heating from the viewpoint of quantity. Additionally, when the proportion of the aerosol generator is 50% by mass or less, sufficient aerosol can be generated during heating from the viewpoint of heat capacity. The proportion of the aerosol generator is more preferably 6 to 40% by mass, more preferably 8 to 30% by mass, and particularly preferably 10 to 20% by mass.

(molding agent)

The tobacco sheet according to this embodiment preferably further contains a molding agent from the viewpoint of maintaining its shape. Examples of molding agents include polysaccharides, proteins, and synthetic polymers. These may be used one type, or two or more types may be used together. Examples of polysaccharides include cellulose derivatives and naturally occurring polysaccharides.

Cellulose derivatives include, for example, methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxymethylethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, benzylcellulose, tritylcellulose, cyanoethylcellulose, carboxymethylcellulose, Cellulose ethers such as carboxyethyl cellulose and aminoethyl cellulose; Organic acid esters such as cellulose acetate, cellulose formate, cellulose propionate, cellulose butyrate, cellulose benzoate, cellulose phthalate, and tosylcellulose; Inorganic acid esters such as cellulose nitrate, cellulose sulfate, cellulose phosphate, and cellulose xanthogenate can be mentioned.

Naturally derived polysaccharides include, for example, guar gum, tara gum, locust bean gum, tamarind seed gum, pectin, gum arabic, gum tragacanth, gum karaya, gum gathi, arabinogalactan, flax seed gum, gum cassia, and silyl. Polysaccharides derived from plants such as elium seed gum and yellow sea mugwort seed gum; Polysaccharides derived from algae such as carrageenan, agar, alginic acid, alginic acid propylene glycol ester, percellaran, and vulgaris extract; Polysaccharides derived from microorganisms such as xanthan gum, gellan gum, curdlan, pullulan, Agrobacterium succinoglycan, whelan gum, macrophomopsis gum, and Ramzan gum; Polysaccharides derived from crustaceans such as chitin, chitosan, and glucosamine; Starches such as starch, sodium starch glycolate, pregelatinized starch, and dextrin can be mentioned.

Examples of proteins include grain proteins such as wheat gluten and rye gluten. Examples of synthetic polymers include polyphosphoric acid, sodium polyacrylate, and polyvinylpyrrolidone.

When the tobacco sheet contains a molding agent, the proportion of the molding agent contained in 100% by mass of the tobacco sheet is preferably 0.1 to 15% by mass. When the ratio of the molding agent is 0.1% by mass or more, the mixture of raw materials can be molded into a sheet shape. In addition, when the proportion of the molding agent is 15% by mass or less, other raw materials can be sufficiently used to ensure the functions required for the tobacco-containing segment of the non-combustion heating type flavor inhaler. The proportion of the molding agent is more preferably 0.2 to 13 mass%, more preferably 0.5 to 12 mass%, and particularly preferably 1 to 10 mass%.

(Reinforcement agent)

The tobacco sheet according to this embodiment may further contain a reinforcing agent from the viewpoint of further improving physical properties. Examples of reinforcing agents include fibrous substances such as fibrous pulp, insoluble fiber, fibrous synthetic cellulose, and liquid substances with a surface coating function that form a film when dried, such as pectin suspension. These may be used one type, or two or more types may be used together.

When the tobacco sheet contains a reinforcing agent, the ratio of the reinforcing agent contained in 100 mass% of the tobacco sheet is preferably 4 to 60 mass%. Within this range, other raw materials can be sufficiently used to ensure the functions required for the tobacco-containing segment of the non-combustion heated flavor inhaler. As for the ratio of the said reinforcing agent, it is more preferable that it is 4.5-55 mass %, and it is still more preferable that it is 5-50 mass %.

(Moisturizer)

The tobacco sheet according to this embodiment may further contain a moisturizing agent from the viewpoint of maintaining quality. Examples of moisturizing agents include sugar alcohols such as sorbitol, erythritol, xylitol, maltitol, lactitol, mannitol, and reduced maltose syrup. These may be used one type, or two or more types may be used together.

When the tobacco sheet contains a humectant, the ratio of the humectant contained in 100 mass% of the tobacco sheet is preferably 1 to 15 mass%. Within this range, other raw materials can be sufficiently used to ensure the functions required for the tobacco-containing segment of the non-combustion heated flavor inhaler. The ratio of the above-mentioned moisturizer is more preferably 2 to 12% by mass, and even more preferably 3 to 10% by mass.

(Other ingredients)

The tobacco sheet according to the present embodiment contains, in addition to the tobacco powder, the aerosol generator, the molding agent, the reinforcing agent, and the moisturizing agent, flavoring agents such as fragrances and flavoring agents, colorants, humectants, and preservatives as necessary. , diluents such as inorganic substances, etc. may be included.

(Paeng Sung-seong)

The expansion property of the tobacco sheet according to this embodiment is preferably 190 cc/100 g or more. When the expansion property is 190 cc/100 g or more, the total heat capacity of the tobacco-containing segment of the non-combustion heating type flavor inhaler can be sufficiently reduced, and the tobacco sheet filled in the tobacco-containing segment can contribute more to aerosol generation. The swelling property is more preferably 210cc/100g or more, and even more preferably 230cc/100g or more. The upper limit of the swelling range is not particularly limited, but may be, for example, 800 cc/100 g or less. In addition, the puffiness is a value measured with DD-60A (brand name, manufactured by Borgwaldt) after cutting a cigarette sheet into a size of 0.8 mm × 9.5 mm and leaving it in a 60% air conditioning room at 22°C for 48 hours am. The measurement is performed by placing 15 g of the recut tobacco sheet in a cylindrical container with an inner diameter of 60 mm and determining the volume when compressed for 30 seconds with a 3 kg load.

(Composition of cigarette sheet)

In this embodiment, the term “cigarette sheet” refers to the components constituting the tobacco sheet, such as tobacco powder, being molded into a sheet shape. Here, the term 'sheet' refers to a shape having a pair of substantially parallel main surfaces and side surfaces. The length and width of the tobacco sheet are not particularly limited and can be adjusted appropriately according to the filling mode. The thickness of the tobacco sheet is not particularly limited, but is preferably 100 to 1000 μm, and more preferably 150 to 600 μm, in terms of balance between heat transfer efficiency and strength.

(Method of manufacturing cigarette sheets)

The tobacco sheet according to the present embodiment can be manufactured by known methods such as rolling and casting, for example. Details of various tobacco sheets manufactured by this method are disclosed in 'Tobacco Dictionary, Tobacco Research Center, March 31, 2009'.

<Rolling method>

Examples of a method of manufacturing a tobacco sheet by a rolling method include a method including the following steps.

(1) A process of obtaining a mixture by mixing water, tobacco powder, an aerosol generator, a molding agent, and a reinforcing agent.

(2) A process of putting the mixture into rolling rollers and rolling it.

(3) Process of drying the rolled molded product with a dryer.

When manufacturing a tobacco sheet by this method, depending on the purpose, the surface of the rolling roller may be heated or cooled, and the rotational speed of the rolling roller may be adjusted. Additionally, the spacing between rolling rollers may be adjusted. One or more rolling rollers may be used to obtain tobacco sheets of the desired basis weight.

<Cast method>

Examples of a method for producing a tobacco sheet by a casting method include a method including the following steps.

(1) A process of mixing water, tobacco powder, an aerosol generator, a molding agent, and pulp to obtain a mixture.

(2) A process of spreading (casting) the mixture thinly, drying it, and forming a tobacco sheet.

When manufacturing tobacco sheets using this method, a slurry containing water, tobacco powder, aerosol generator, molding agent, and pulp is irradiated with ultraviolet rays or X-rays to remove some components such as nitrosamines. You may add it.

[Non-combustion heated flavor aspirator]

The non-combustion heating type flavor inhaler according to the present embodiment is provided with a tobacco-containing segment including the tobacco sheet according to the present embodiment. Since the non-combustion heating type flavor inhaler according to the present embodiment is provided with a tobacco-containing segment filled with a highly expandable tobacco sheet or the like according to the present embodiment, the total heat capacity of the tobacco-containing segment can be sufficiently reduced, and the tobacco The tobacco sheet filled in the containing segment can contribute more to aerosol generation.

An example of a non-combustion heating type flavor aspirator according to the present embodiment is shown in FIG. 1. The non-combustion heating type flavor aspirator 1 shown in FIG. 1 is a cylindrical device including a tobacco-containing segment 2 filled with a tobacco sheet according to the present embodiment and perforations 8 on the circumference. It is provided with a cooling segment (3), a center hole segment (4), and a filter segment (5). The non-combustion heating type flavor inhaler according to the present embodiment may include other segments in addition to the tobacco-containing segment, cooling segment, center hole segment, and filter segment.

The axial length of the non-combustion heating type flavor aspirator according to the present embodiment is not particularly limited, but is preferably 40 mm or more and 90 mm or less, more preferably 50 mm or more and 75 mm or less, and even more preferably 50 mm or more and 60 mm or less. In addition, the circumferential length of the non-combustion heating type flavor aspirator is preferably 16 mm or more and 25 mm or less, more preferably 20 mm or more and 24 mm or less, and even more preferably 21 mm or more and 23 mm or less. For example, the tobacco containing segment may have a length of 20 mm, the cooling segment may have a length of 20 mm, the center hole segment may have a length of 8 mm, and the filter segment may have a length of 7 mm. Additionally, the length of the filter segment can be selected within the range of 4 mm or more and 10 mm or less. Additionally, the ventilation resistance of the filter segment at that time is selected to be 15 mmH ₂ O/seg or more and 60 mmH ₂ O/seg or less per segment. The length of these individual segments can be appropriately changed depending on manufacturing suitability, required quality, etc. Furthermore, even if only a filter segment is disposed on the downstream side of the cooling segment without using a center hole segment, it can function as a non-combustion heating type flavor aspirator.

(Tobacco-containing segment)

The tobacco-containing segment 2 is filled with a tobacco sheet or the like according to the present embodiment in a wrapper (hereinafter also referred to as a wrapper). The method of filling a cigarette sheet or the like into a wrapper (hereinafter also referred to as a wrapper) is not particularly limited, but for example, the cigarette sheet or the like may be wrapped with a wrapper, or the cigarette sheet or the like may be filled into a cylindrical wrapper. When the shape of the tobacco sheet has a longitudinal direction such as a rectangular shape, the tobacco sheet, etc. may be filled so that the longitudinal direction is each in an unspecified direction within the wrapper, and may be the axial direction of the tobacco-containing segment 2 or the axial direction. It may be aligned and charged in a direction perpendicular to .

(cooling segment)

As shown in FIG. 1 , the cooling segment 3 may be comprised of a cylindrical member 7 . The cylindrical member 7 may be, for example, a paper tube obtained by processing thick paper into a cylindrical shape.

The cylindrical member 7 and the mouthpiece lining paper 12, which will be described later, are provided with perforations 8 penetrating both. Due to the presence of perforations 8, external air is introduced into the cooling segment 3 during suction. As a result, the aerosol vaporization component generated by heating the tobacco-containing segment 2 comes into contact with the outside air and is liquefied because its temperature is lowered, thereby forming an aerosol. The diameter (diameter length) of the perforation 8 is not particularly limited, but may be, for example, 0.5 mm or more and 1.5 mm or less. The number of perforations 8 is not particularly limited and may be one or two or more. For example, a plurality of perforations 8 may be provided on the circumference of the cooling segment 3.

The amount of external air introduced from the perforation 8 is preferably 85 volume% or less, and more preferably 80 volume% or less, relative to the total volume of gas sucked by the user. When the ratio of the amount of outside air is 85 volume% or less, reduction in flavor due to dilution by outside air can be sufficiently suppressed. In addition, this is also called ventilation ratio in another expression. From the viewpoint of cooling properties, the lower limit of the ventilation ratio range is preferably 55 volume% or more, and more preferably 60 volume% or more.

Additionally, the cooling segment may be a segment comprising sheets of suitable construction material that are wrinkled, pleated, gathered, or folded. The cross-sectional profile of such elements may show randomly oriented channels. Additionally, the cooling segment may include a bundle of longitudinal extension tubes. Such cooling segments can be formed, for example, by wrapping pleated, gathered, or folded sheet material into wrappers.

The axial length of the cooling segment may be, for example, 7 mm or more and 28 mm or less, for example, 18 mm. Additionally, the cooling segment may be substantially circular in its axial cross-sectional shape, and its diameter may be, for example, 5 mm or more and 10 mm or less, for example, about 7 mm.

(center hole segment)

The center hole segment is composed of a filled layer including one or more hollow portions and an inner plug wrapper (inner wrapper) covering the filled layer. For example, as shown in FIG. 1, the center hole segment 4 is composed of a second filling layer 9 including a hollow portion and a second inner plug wrapper 10 covering the second filling layer 9. . The center hole segment 4 has the function of increasing the strength of the mouthpiece segment 6. The second filled layer 9, for example, has an inner diameter in which cellulose acetate fibers are filled at high density and a plasticizer containing triacetin is added in an amount of 6% by mass or more and 20% by mass or less based on the mass of cellulose acetate and hardened. 1.0mm or more, This can be done with a rod of 5.0mm or less. Since the second packed layer 9 has a high packing density of fibers, during suction, air or aerosol flows only through the hollow portion and hardly flows inside the second packed layer 9. Since the second filled layer 9 inside the center hole segment 4 is a fiber filled layer, the tactile sensation from the outside during use rarely causes discomfort to the user. Additionally, the center hole segment 4 may not include the second inner plug wrapper 10 and may maintain its shape by thermoforming.

(filter segment)

The structure of the filter segment 5 is not particularly limited, but may be composed of a single or plural filled layer. The outside of the filling layer may be covered with one or multiple sheets of wrapper. The per-segment ventilation resistance of the filter segment 5 can be appropriately changed depending on the amount and material of the filler filled in the filter segment 5. For example, when the filling is cellulose acetate fiber, increasing the amount of cellulose acetate fiber filled in the filter segment 5 can increase ventilation resistance. When the filling is cellulose acetate fiber, the packing density of the cellulose acetate fiber may be 0.13 to 0.18 g/cm3. In addition, ventilation resistance is a value measured by a ventilation resistance meter (product name: SODIMAX, manufactured by SODIM).

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

As shown in Fig. 1, the center hole segment 4 and the filter segment 5 can be connected with an outer plug wrapper (outer wrapper) 11. The outer plug wrapper 11 may be, for example, cylindrical paper. Additionally, the tobacco containing segment (2), the cooling segment (3) and the connected center hole segment (4) and filter segment (5) can be connected by a mouthpiece lining paper (12). These can be connected, for example, by applying glue such as vinyl acetate glue to the inner surface of the mouthpiece lining paper 12 and wrapping the three segments. Additionally, these segments may be divided and connected multiple times with a plurality of lining papers.

[Non-combustion heated flavor aspiration system]

The non-combustion heating type flavor aspiration system according to the present embodiment includes a non-combustion heating type flavor aspirator according to the present embodiment, and a heating device that heats the tobacco-containing segment of the non-combustion heating type flavor aspirator. The non-combustion heating type flavor aspiration system according to the present embodiment may have other configurations in addition to the non-combustion heating type flavor aspirator and the heating device according to the present embodiment.

An example of a non-combustion heating type flavor aspiration system according to the present embodiment is shown in FIG. 2. The non-combustion heating type flavor aspiration system shown in FIG. 2 includes a non-combustion heating type flavor aspirator 1 according to the present embodiment, and a heating device that heats the tobacco-containing segment of the non-combustion heating type flavor aspirator 1 from the outside ( 13) is provided.

Figure 2 (a) shows the state before inserting the non-combustion heating type flavor aspirator 1 into the heating device 13, and Figure 2 (b) shows the non-combustion heating type flavor aspirator 1 with a heating device ( 13) indicates the state of heating. The heating device 13 shown in FIG. 2 includes a body 14, a heater 15, a metal tube 16, a battery unit 17, and a control unit 18. The body 14 includes a cylindrical recess 19, the inner side of the recess 19 corresponding to the tobacco-containing segment of the non-combustion heated flavor aspirator 1 inserted into the recess 19. The heater 15 and the metal pipe 16 are arranged at the position. The heater 15 may be a heater based on electrical resistance, and power is supplied from the battery unit 17 in response to instructions from the control unit 18 that performs temperature control, thereby heating the heater 15. The heat emitted from the heater 15 is transmitted to the tobacco-containing segment of the non-combustion heated flavor inhaler 1 through the metal tube 16 with high thermal conductivity.

In Figure 2(b), since it is schematically shown, there is a gap between the outer periphery of the non-combustion heating type flavor aspirator 1 and the inner periphery of the metal pipe 16, but in reality, For the purpose of efficiently transferring heat, it is preferable that there is no gap between the outer circumference of the non-combustion heating type flavor aspirator (1) and the inner circumference of the metal tube (16). In addition, the heating device 13 heats the tobacco-containing segment of the non-combustion heating type flavor inhaler 1 from the outside, but may heat it from the inside.

The heating temperature by the heating device is not particularly limited, but is preferably 400°C or lower, more preferably 150°C or higher and 400°C or lower, and even more preferably 200°C or higher and 350°C or lower. In addition, the heating temperature refers to the temperature of the heater of the heating device.

The present inventors found that satisfaction with use increases when the response at the beginning of suction is high, that is, when the delivery of the flavor component at the beginning of suction is sufficient. Additionally, the air permeability of conventional cigarette sheets is zero or very low. In order to control the release of components from these sheets, for example, the sheet is rolled up and the filling amount of the composition is changed, or the density of the composition is changed. However, these conventional methods have the drawback that there are limits to the filling amount and density in order to maintain the coil shape, and the applicable range in product design is narrow. Accordingly, the present invention includes a tobacco sheet (first embodiment) that has high swelling properties and has improved user satisfaction, and a tobacco sheet (2nd embodiment) that has high swelling properties and can achieve an excellent profile. do. Below, these aspects are explained.

[First mode]

As a first aspect, a tobacco sheet with high swelling properties and increased satisfaction with use will be described. The tobacco sheet in this embodiment has a density of 1.0 g/cm ³ or less.

(1) Binder

A binder is a type of molding agent described above and is an adhesive used to bind tobacco powder to each other or tobacco powder to other components. In this embodiment, a known binder can be used. Examples of such binders include polysaccharides such as guar gum and xanthan gum, and cellulose derivatives such as CMC (carboxymethyl cellulose), CMC-Na (sodium salt of carboxymethyl cellulose), and HPC (hydroxypropyl cellulose). . The upper limit of the binder content is preferably 6% by mass or less in terms of dry mass (mass excluding mixed water, hereinafter the same) relative to the dry mass of the tobacco sheet, and the lower limit is preferably 1% by mass or more, More preferably, it is 3% by mass or more. If the amount of binder exceeds the upper limit or is less than the lower limit, the above effect may not be sufficiently achieved.

Binders used in this embodiment include polysaccharides, proteins, and synthetic polymers. Below, these specific examples are shown. In this embodiment, these binders can also be used in combination.

1) Polysaccharides

1-1) Cellulose derivatives

[Cellulose ethers]

Methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxymethylethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, benzylcellulose, tritylcellulose, cyanoethylcellulose, carboxymethylcellulose, carboxyethylcellulose, aminoethyl cellulose

[Cellulose esters]

Organic acid esters: cellulose acetate, cellulose formate, cellulose propionate, cellulose butyrate, cellulose benzoate, cellulose phthalate, tosylcellulose

Inorganic acid esters: cellulose nitrate, cellulose sulfate, cellulose phosphate, cellulose xanthogenate

1-2) Polysaccharides of natural origin

[Plant derived]

Guar gum, tara gum, locust bean gum, tamarind seed gum, pectin, gum arabic, gum tragacanth, gum karaya, gum gati, arabinogalactan, flax seed gum, cassia gum, psyllium seed gum, yellow sea mugwort seed gum.

[Origin of algae]

Carrageenan, agar, alginic acid, alginic acid propylene glycol ester, perselaran, vulgaris extract

[Origin from microorganisms]

Xanthan gum, gellan gum, curdlan, pullulan, Agrobacterium succinoglycan, whelan gum, Macrophomopsis gum, Ramzan gum

[Crustacean origin]

Chitin, chitosan, glucosamine

[All categories]

Starch, sodium starch glycolate, pregelatinized starch, dextrin

2) protein

Wheat Gluten, Rye Gluten

3) Synthetic polymers

Polyphosphoric acid, sodium polyacrylate, polyvinylpyrrolidone

(2) Aerosol generator

In this embodiment as well, known aerosol generators can be used, examples of which include polyhydric alcohols such as glycerin and propylene glycol (PG), triethyl citrate (TEC), and triacetin, which have a boiling point exceeding 100°C. You can. In this embodiment, the amount of aerosol generator in the tobacco sheet is preferably 5 to 40% by mass, more preferably 10 to 20% by mass in dry mass (mass excluding mixed water, hereinafter the same). If the amount of aerosol generator exceeds the upper limit, manufacturing of cigarette sheets may become difficult, and if it is less than the lower limit, smoke sensitivity may decrease.

(4) Emulsifier

In this aspect, the tobacco sheet may contain an emulsifier. Emulsifiers increase the affinity between the lipophilic aerosol generator and the hydrophilic tobacco material. Therefore, the addition of an emulsifier is effective, especially when using a lipophilic aerosol generator. As the emulsifier, a known emulsifier can be used, and examples thereof include an emulsifier having an HLB value of 8 to 18. The amount of the emulsifier is not particularly limited, but is preferably 0.1 to 3 parts by mass, more preferably 1 to 2 parts by mass, in terms of dry mass, per 100 parts by mass of the tobacco sheet.

(5) fiber

The tobacco sheet of this embodiment may not contain fibers derived from tobacco and fibers derived from materials other than tobacco (such as cellulose). In this case, it is possible to avoid undesirable effects such as unpleasant taste on the taste due to these fibers. However, since it is not realistic to completely exclude fibers, the amount of the fibers in the tobacco sheet is preferably 1.0% by mass, more preferably 0.5% by mass in terms of dry mass. Additionally, the tobacco sheet of this embodiment may contain a total of 0.5 to 2.0% by mass of fibers derived from tobacco or fibers derived from materials other than tobacco. In this case, the strength of the tobacco sheet is improved by the above-mentioned fibers, and the balance between taste and strength is excellent. In the present invention, tobacco-derived fiber refers to tobacco raw materials obtained by beating them into pulp using a grinder or the like, and is different from the tobacco materials described above.

(6) Spices

In this aspect, the tobacco sheet may contain fragrance. A fragrance is a substance that provides scent or flavor. The fragrance may be a natural fragrance or a synthetic fragrance. As a fragrance, one type of fragrance may be used or a mixture of multiple types of fragrance may be used. As the flavor, any flavor commonly used in smoking articles can be used, specific examples of which will be described later. Flavoring may be included in the sheet for a smoking article in an amount such that the smoking article can provide a desirable aroma or flavor, for example, its amount is preferably 1 to 30% by mass of the tobacco sheet, more preferably It is 2-20% by mass.

The type of the fragrance is not particularly limited, and from the viewpoint of providing a good fragrance, it may include acetoanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, and 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, butyric acid. Butyl, butyric acid, caramel, cardamom oil, carob absolute, β-carotene, carrot juice, L-carbon, β-caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, thinner Wheat alcohol, cinnamyl cinnamyl, citronella oil, DL-citronellol, clary sage extract, cocoa, coffee, cognac oil, coriander oil, cuminaldehyde, davana oil, δ-decalactone, γ-decalactone, decane Acid, dill herb oil, 3,4-dimethyl-1,2-cyclopentanedione, 4,5-dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 3,7-dimethyl-6 -Octenoic acid, 2,3-dimethylpyrazine, 2,5-dimethylpyrazine, 2,6-dimethylpyrazine, ethyl 2-methylbutyrate, ethyl acetate, ethyl butyrate, ethyl hexanoate, ethyl isovalerate, ethyl lactate, Ethyl urate, ethyl levulinate, ethyl maltol, ethyl octanoate, ethyl oleate, ethyl palmitate, ethyl phenyl acetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin, ethyl vanillin glucoside, 2-ethyl. -3,(5 or 6)-dimethylpyrazine, 5-ethyl-3-hydroxy-4-methyl-2(5H)-furanone, 2-ethyl-3-methylpyrazine, eucalyptol, Fenugreek Absolute, Gene Absolute, gentian root infusion, geraniol, geranyl acetate, grape juice, guaiacol, guava extract, γ-heptalactone, γ-hexalactone, hexanoic acid, cis-3-hexen-1-ol, acetic acid Hexyl, hexyl alcohol, hexyl phenylacetate, honey, 4-hydroxy-3-pentenoic acid lactone, 4-hydroxy-4-(3-hydroxy-1-butenyl)-3,5,5-trimethyl-2 -Cyclohexen-1-one, 4-(para-hydroxyphenyl)-2-butanone, sodium 4-hydroxyundecanoate, immortel absolute, β-ionone, isoamyl acetate, isoamyl butyrate , Isoamyl phenyl acetate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute, kolanut tincture, radhanum oil, lemon terpeneless oil, licorice extract, linalool, linalyl acetate, ruby root oil, maltol, maple. Syrup, menthol, menthone, L-menthyl acetate, paramethoxybenzaldehyde, methyl-2-pyrrolyl ketone, methyl anthranilate, methyl phenyl acetate, methyl salicylate, 4'-methylacetophenone, methylcyclopentenolone, 3-methyl Valeric acid, mimosa absolute, molasses, myristic acid, nerol, nerolidol, γ-nonalactone, nutmeg oil, δ-octalactone, octanal, octanoic acid, orange flower oil, orange oil, oris root oil, palmit Acid, ω-pentadecalactone, peppermint oil, petitgrain Paraguay oil, phenethyl alcohol, phenyl phenyl acetate, phenylacetic acid, piperonal, plum extract, propenylguaethol, propyl acetate, 3-propylidenephthal. Ryde, plum juice, pyruvic acid, raisin extract, rose oil, rum, sage oil, sandalwood oil, spearmint oil, Styrox absolute, marigold oil, tea distillate, α-terpineol, terpinenyl acetate, 5 ,6,7,8-tetrahydroquinoxaline, 1,5,5,9-tetramethyl-13-oxacyclo(8.3.0.0(4.9))tridecane, 2,3,5,6-tetramethylpyrazine, Thyme oil, tomato extract, 2-tridecanone, triethyl citrate, 4-(2,6,6-trimethyl-1-cyclohexenyl)2-buten-4-one, 2,6,6-trimethyl- 2-cyclohexen-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, veratrialdehyde, violet leaf absolute, N-ethyl-p-menthane-3-carboamide (WS-3), ethyl-2-(p-menthane) -3-carboxamide) acetate (WS-5), sugar (sucrose, fructose, etc.), cocoa powder, carob powder, coriander powder, licorice powder, orange peel powder, rosehip powder, chamomile flower Powder, lemon verbena powder, peppermint powder, leaf powder, spearmint powder, black tea powder, natural vegetable fragrance (e.g. jasmine oil, lemon oil, vetch oil, lobe oil), esters (e.g. menthyl acetate, isoamyl propionate, etc.) ), alcohols (e.g., phenylethyl alcohol, cis-6-nonen-1-ol, etc.). These fragrances may be used individually or in combination of two or more types.

(7) Characteristics and form of tobacco sheets

1) Density

The tobacco sheet of this embodiment has a density of 1.0 g/cm ³ or less. A tobacco sheet having such a low density can achieve sufficient delivery of flavor components in the initial stage of inhalation. The reason for this is not limited, but it is presumed that the low-density tobacco sheet can reduce the packing density of the tobacco filling in the smoking article, thereby increasing the amount of heat received per mass. Additionally, cost reduction can be achieved by reducing the packing density. From these viewpoints, the density is preferably 0.95 g/cm ³ or less, more preferably 0.75 g/cm ³ or less. The lower limit of the density is not limited, but is preferably 0.5 g/cm ³ or more from the viewpoint of strength etc. In the present invention, density is calculated from basis weight (mass per unit area) and thickness. The air permeability of the tobacco sheet of this embodiment is preferably 0 Corestar units.

2) Thickness

The thickness of the tobacco sheet is not limited, but the upper limit is preferably 1500 μm or less, more preferably 1000 μm or less, and even more preferably 500 μm or less. Moreover, the lower limit is preferably 20 μm or more, more preferably 100 μm or more, and even more preferably 150 μm or more.

(8) Tobacco segment

From tobacco sheets, tobacco segments for use in smoking articles can be manufactured. In one aspect, the tobacco segment is provided with a tubular wrapper, and the wrapper is provided with a tobacco sheet filled in a spiral shape (see Fig. 3 (A)). In the diagram, 20A is a tobacco segment, T is a tobacco sheet, and 22 is a wrapper, usually paper. The tobacco segment is preferably rod-shaped, and its length can be about 15 to 80 mm and its diameter about 5 to 10 mm. Additionally, the tobacco segment 20A shown in Fig. 3(A) can be cut so that the aspect ratio (length/diameter) is about 0.5 to 1.2 (see Fig. 3(B)).

In another aspect, the tobacco segment 20A is provided with a cylindrical wrapper 22, and is provided with a tobacco sheet T folded and filled within the wrapper. The ridge created by folding is approximately parallel to the longitudinal direction of the segment (see (C) in Figure 3). The tobacco segment 20A is preferably rod-shaped, and its length can be about 15 to 80 mm and its diameter about 5 to 10 mm. In this embodiment, it is preferable that surface wrinkle processing such as pleating processing or crimp processing is performed on the tobacco sheet T in advance.

In another aspect, the tobacco segment 20A is provided with a cylindrical wrapper 22, and is provided with cut pieces of the tobacco sheet T filled in the wrapper (see Fig. 3(D)). The tobacco segment 20A is preferably rod-shaped, and its length can be about 15 to 80 mm and its diameter about 5 to 10 mm. The size of the cutting piece is not limited, but for example, the length of the longest side can be about 2 to 20 mm and the width can be about 0.5 to 1.5 mm.

In another aspect, the tobacco segment 20A has a cylindrical wrapper 22, and has strand-type pieces filled in the wrapper (see Fig. 3(E)). The strand-type pieces are packed so that their long direction is approximately parallel to the long direction of the wrapper 22. The width of the strand type piece can be about 0.5 to 1.5 mm.

The tobacco segment 20A, in another embodiment, has a cylindrical wrapper 22 and has a tobacco filler randomly filled in the wrapper. Shredded tobacco is a piece of tobacco and is different from a strand type piece.

[Manufacturing method]

The tobacco sheet in this embodiment can be manufactured by any method, but is preferably manufactured by a method comprising the following steps.

At least, step 1 of preparing a mixture by mixing tobacco powder, binder, and medium.

Step 2 of preparing a wet sheet by extruding the mixture from a piezoelectric or die.

Step 3 of drying the wet sheet.

A sheet formed by applying pressure in this way is called a 'pressure molded sheet', and as described later, 'pressure molded sheet' includes 'laminate sheet' and 'extruded sheet'. A laminated sheet is a sheet obtained by piezoelectricizing the mixture to a target thickness with a roller one or more times and then drying it to a target moisture content. An extruded sheet is a sheet obtained by extruding a mixture to a target thickness using a T-die or the like and then drying it to a target moisture content. Piezoelectricity and extrusion may be combined in pressure forming sheets. For example, after extruding the mixture, it may be further piezoelectrically formed into a sheet.

(1) Process 1

In this process, tobacco powder, binder, and medium are mixed. If necessary, an aerosol generator, emulsifier, or fragrance may be added. The compounding amount of each component is adjusted to achieve the above-mentioned amount. The medium is preferably made up of a water-soluble organic solvent with a boiling point of less than 100°C, such as water or ethanol, and is more preferably water or ethanol.

This process can be carried out by kneading each component, and is preferably carried out through 1) pulverization of raw materials (for example, single leaves), 2) preparation of moisture, and 3) kneading.

1) Grinding

It is preferable to coarsely crush the raw materials and then finely grind them using a grinder (for example, ACM-5, manufactured by Hosokawa Micron). The particle size (D90) after fine pulverization is preferably 20 to 1000 μm. The particle size is measured using a laser diffraction type particle size meter such as Mastersizer (manufactured by Malvern).

2) Preparation of moisture

Additives such as binders and, if necessary, flavorings or lipids are added to the pulverized tobacco powder and mixed. Since this mixing is preferably a dry blend, it is preferable to use a mixer as the mixing machine. Next, a medium such as water and, if necessary, an aerosol generator such as glycerin are added to the dry blend, and mixed with a mixer to prepare wet powder (powder in a wet state). The amount of the medium in the moisture can be 20 to 80 mass%, preferably 20 to 40 mass%, and is appropriately prepared in step 2. For example, when piezoelectricity is performed in step 2, the amount of the medium can be 20 to 50 mass%, and when extrusion is performed, the amount can be 20 to 80 mass%. It is preferable that the solid content concentration of the moisture is 50 to 90 mass%. In a particularly preferred embodiment, D90 contains tobacco particles of 200 μm or more, a liquid medium containing water (more preferably a liquid medium consisting of water), and a moisture content of 50% by mass or more is used.

3) Kneading

The wet powder is kneaded using a kneader (eg, DG-1 manufactured by Dalton). It is desirable to carry out kneading until the medium is evenly spread throughout. For example, it is desirable to knead the mixture until the color of the mixture becomes uniform when viewed with the naked eye.

(2) Process 2

In this process, the mixture (wet content) is extruded from a piezoelectric or die to prepare a wet sheet. For example, the mixture is sandwiched between two base films and passed between a pair of rollers using a calendar device (for example, manufactured by Glass Roll Machinery Co., Ltd.) until a predetermined thickness (exceeding 100 μm) is reached. , it is possible to obtain a laminate in which a wet sheet exists between two base films by applying piezoelectricity. As the base film, a non-adhesive film such as a fluorine-based polymer film is preferable. Piezoelectricity using rollers can be performed multiple times. Additionally, it is also possible to extrude the mixture (wet content) from a die (preferably a T die) provided with a predetermined gap to form a wet sheet on the substrate. As the base material, known materials such as glass plates, metal plates, and plastic plates can be used. A known extruder can be used for extrusion.

(3) Process 3

In this process, the wet sheet is dried. For example, in laminate, this process can be performed in the following order. 1) Peel off the base film on one side. 2) The laminate is dried using a ventilated dryer. The drying temperature may be room temperature, but is preferably 50 to 100°C, and the drying time may be 1 to 2 minutes. 3) Next, the remaining base film is peeled off and dried under the above conditions to obtain a tobacco sheet. By performing drying in this way, it is possible to avoid adhesion of the tobacco sheet to other substrates. The tobacco sheet obtained in this way is also called a 'laminated sheet'. A laminated sheet is preferable because it has a smooth surface and can suppress the occurrence of flaking when in contact with another member. Additionally, this method is suitable for producing sheets of 300 μm or less.

Additionally, in the case of extrusion molding, the wet sheet on the substrate is dried by air drying or heating. Drying conditions were as described above. The tobacco sheet obtained in this way is also called an 'extruded sheet'. Extruded sheets are preferable because they have a smooth surface and can suppress the occurrence of flaking when in contact with other members. This method is suitable for producing sheets of 200 μm or more.

[Second mode]

As a second aspect, a tobacco sheet that has high swelling properties and can achieve an excellent profile will be described. The tobacco sheet in this embodiment contains one or both of the tobacco powder, a humectant, a binder, a flavoring agent, or a molding aid, and has an air permeability exceeding 0 Coresta units.

(1) Moisturizer

The humectant in this embodiment is a material for providing moisture to the tobacco sheet, but it is also the aerosol generator mentioned above that vaporizes by heating and cools to generate an aerosol, or atomizes to generate an aerosol. Moisturizers in this embodiment include polyhydric alcohols such as glycerin or propylene glycol (PG); and triesters such as triethyl citrate (TEC) or triacetin. The humectant in this embodiment preferably has a boiling point exceeding 100°C. The amount of humectant in the tobacco sheet is preferably 1 to 40% by mass, more preferably 10 to 20% by mass, in terms of dry mass (mass excluding mixed water, the same applies hereinafter). If the amount of humectant exceeds the upper limit, manufacturing of cigarette sheets may become difficult, and if it is less than the lower limit, smoke loss may be reduced.

(2) Binder

In this aspect, the binder described in the first aspect can be used.

(3) Flavoring agent

A flavoring agent is a material that imparts flavor, and is preferably a fragrance. As the fragrance, the ones described above can be used.

(4) Aerosol generator

In this embodiment, the tobacco sheet is the aerosol generating agent described in the first embodiment and may contain an agent other than the above-described moisturizing agent.

(5) Molding aids

Molding aids in this embodiment include pulp or non-woven fabric of vegetable fibers or synthetic fibers, and more specifically, fibers derived from tobacco or fibers derived from materials other than tobacco. The amount of molding aid added is preferably 0.5 to 2.0 mass% of the sheet. The tobacco sheet in this embodiment need only contain either a flavoring agent or a molding aid. When the molding aid is included, specifically, a material that can guarantee the strength of the sheet and reduce the adhesiveness of the sheet. Effects such as these appear, and when fragrances are included, fragrances, etc. can be supported in the molding aid, so effects such as improving the carrying capacity of the fragrance, etc. of the sheet appear.

1) Ventilation

The air permeability of the tobacco sheet of this embodiment is greater than 0 Coresta units, preferably at least 50 Coresta units, at least 100 Coresta units, at least 200 Coresta units, at least 300 Coresta units, or at least 400 Coresta units, More preferably, it is 500 Coresta units or more. The upper limit is not limited, but is preferably 20,000 Coresta units or less, and more preferably 15,000 Coresta units or less. A Coresta unit is the air passing flow rate (cm ³ ) per minute per 1 cm ² under the condition of a differential pressure of 1 kPa. Breathability can be measured using a breathability meter PPM1000M manufactured by Cerulean. In the present invention, the air permeability is preferably measured in the following procedure. 1) Condition the sheet by leaving it for 48 hours at a room temperature of 22°C and a relative humidity of 60%. 2 ⁾ Next, cut this sheet to a size of 40 mm . 3) The measurement environment is room temperature (e.g. 22°C) and relative humidity of 60%.

In this embodiment, the initial profile can be achieved by using a tobacco sheet having a specific air permeability. Specifically, a higher delivery can be achieved in the initial puff than with conventional sheets, and a profile in which the delivery amount is less likely to decrease in the latter part of the puff, similar to conventional sheets, can be achieved. The reason for this is not limited, but it is presumed that the high air permeability of the sheet increases the release efficiency of the moisturizing agent from the sheet, thereby increasing the amount of aerosol formed from the moisturizing agent.

2) Thickness

The thickness of the tobacco sheet of this embodiment is not limited, but in one embodiment, it is preferably 20 to 2000 μm, more preferably 100 to 1500 μm, and still more preferably 100 to 1000 μm.

3) Density

The tobacco sheet of this embodiment preferably has a density of 0.5 to 2.0 g/cm ³ , and more preferably has a density of 0.5 to 1.0 g/cm ³ . As will be described later, the tobacco sheet of this embodiment preferably has holes provided physically or chemically, but the density here is not the density of the portion excluding the hole portion, but the density of the entire sheet including the hole. Additionally, if the tobacco sheet of this embodiment has a density of 1.0 g/cm ³ or less, more sufficient delivery of flavor components can be achieved in the initial stage of inhalation.

4) hole

As described above, the tobacco sheet of this embodiment preferably has holes provided through processing. The hole can be prepared by physical processing or chemical processing. Examples of the former include laser processing, cutting processing using needles, etc., and electrical hole drilling that causes local discharge. Also examples of the latter include etching. The shape of the hole is not limited and may be a circle, ellipse, polygon, etc., and it is preferable that the hole is a through hole. The size, number, and arrangement of holes are adjusted appropriately to achieve the desired air permeability. In one aspect, the size of the hole is 0.1 to 0.8 mm in circumscribed circle diameter. Additionally, in one aspect, the holes are arranged in a grid on the sheet, and the shortest distance between adjacent holes is about 0.2 to 0.8 mm.

(6) Tobacco segment

From tobacco sheets, tobacco segments for use in smoking articles can be manufactured. The tobacco segment in this aspect is as described in the first aspect.

[Manufacturing method]

The tobacco sheet in this embodiment can be manufactured by any method, but is preferably manufactured by a method comprising the following steps.

Step 1 of preparing a mixture by kneading at least one or both of tobacco powder, a humectant, a binder, a flavoring agent, or a molding aid, and a medium.

Step 2 of preparing a wet sheet by extruding the mixture from a piezoelectric or die.

Step 3 of drying the wet sheet.

A sheet formed by applying pressure in this way is called a 'pressure molded sheet', and as described later, 'pressure molded sheet' includes 'laminate sheet' and 'extruded sheet'. A laminated sheet is a sheet obtained by piezoelectricizing the mixture to a target thickness with a roller one or more times and then drying it to a target moisture content. An extruded sheet is a sheet obtained by extruding a mixture to a target thickness using a T-die or the like and then drying it to a target moisture content. Piezoelectricity and extrusion may be combined in pressure forming sheets. For example, after extruding the mixture, it may be further piezoelectrically formed into a sheet.

(1) Process 1

In this process, the medium is mixed with at least one or both of tobacco powder, a moisturizer, a binder, a flavoring agent, or a molding aid. If necessary, an emulsifier may be added. The compounding amount of each component is adjusted to achieve the above-mentioned amount. The medium is preferably made up of a water-soluble organic solvent with a boiling point of less than 100°C, such as water or ethanol, and is more preferably water or ethanol.

This process can be carried out by kneading each component, and is preferably carried out through 1) pulverization of raw materials (for example, single leaves), 2) preparation of moisture, and 3) kneading.

1) Grinding

It is preferable to coarsely crush the raw materials and then finely grind them using a grinder (for example, ACM-5, manufactured by Hosokawa Micron). The particle size D90 of the tobacco powder after fine pulverization is as described above. The particle size is measured using a laser diffraction type particle size meter such as Mastersizer (manufactured by Malvern).

2) Preparation of moisture

Tobacco powder, binder, one or both of flavoring agents and molding aids, and additives such as lipids are added and mixed as needed. Since this mixing is preferably a dry blend, it is preferable to use a mixer as the mixing machine. Next, a medium such as water and a humectant are added to the dry blend, and mixed with a mixer to prepare wet powder (wet powder). The amount of the medium in the moisture can be 20 to 80 mass%, preferably 20 to 40 mass%, and is appropriately prepared in step 2. For example, when piezoelectricity is performed in step 2, the amount of the medium can be 20 to 50 mass%, and when extrusion is performed, the amount can be 20 to 80 mass%. It is preferable that the solid content concentration of the moisture is 50 to 90 mass%.

3) Kneading

The wet powder is kneaded using a kneader (eg, DG-1 manufactured by Dalton). It is desirable to carry out kneading until the medium is evenly spread throughout. For example, it is desirable to knead the mixture until the color of the mixture becomes uniform when viewed with the naked eye.

(2) Process 2

In this process, the mixture (wet content) is extruded from a piezoelectric or die to prepare a wet sheet. For example, the mixture is sandwiched between two base films and passed between a pair of rollers using a calendar device (e.g., manufactured by Glass Roll Machinery Co., Ltd.) until a predetermined thickness (exceeding 100 μm) is reached, By applying piezoelectricity, a laminate in which a wet sheet exists between two base films can be obtained. As the base film, a non-adhesive film such as a fluorine-based polymer film is preferable. Piezoelectricity using rollers can be performed multiple times. Additionally, it is also possible to extrude the mixture (wet content) from a die (preferably a T die) provided with a predetermined gap to form a wet sheet on the substrate. As the base material, known materials such as glass plates, metal plates, and plastic plates can be used. A known extruder can be used for extrusion.

(3) Process 3

In this process, the wet sheet is dried. For example, in laminate, this process can be performed in the following order. 1) Peel off the base film on one side. 2) The laminate is dried using a ventilated dryer. The drying temperature may be room temperature, but is preferably 50 to 100°C, and the drying time may be 1 to 2 minutes. 3) Next, the remaining base film is peeled off and dried under the above conditions to obtain a tobacco sheet. By performing drying in this way, it is possible to avoid adhesion of the tobacco sheet to other substrates. The sheet obtained in this way is also called a 'laminated sheet'. A laminated sheet is preferable because it has a smooth surface and can suppress the occurrence of flaking when in contact with another member. Additionally, this method is suitable for producing sheets of 300 μm or less.

Additionally, in the case of extrusion molding, the wet sheet on the substrate is dried by air drying or heating. Drying conditions were as described above. The tobacco sheet obtained in this way is also called an 'extruded sheet'. Extruded sheets are preferable because they have a smooth surface and can suppress the occurrence of flaking when in contact with other members. This method is suitable for producing sheets of 200 μm or more.

In addition to this, tobacco sheets can also be manufactured by a papermaking method, a casting method, a nonwoven coating method, etc. The papermaking method is a method of producing a sheet by papermaking and drying a mixture containing tobacco powder, a moisturizer, a binder, a flavoring agent or a molding aid, and water. However, since the mixture needs to contain a fibrous material, it is preferable to include pulp as a fibrous tobacco raw material or molding aid. The water extract extracted from the tobacco raw material before it is fiberized can later be concentrated and returned to the papermaking sheet. Sheets manufactured by this method are called paper sheets.

The casting method is a method of producing a sheet by spreading (casting) a mixture containing one or both of tobacco powder, a moisturizer, a binder, a flavoring agent, or a molding aid on a substrate and drying it. The mixture may, if necessary, contain a molding aid and a medium such as water. Sheets manufactured by this method are called cast sheets.

The nonwoven coating method is a method of producing a sheet by applying a mixture containing one or both of tobacco powder, a moisturizer, a binder, a flavoring agent, or a molding aid to a nonwoven fabric. Sheets manufactured by this method are called nonwoven sheets.

Example

Hereinafter, specific examples of the present embodiment will be described, but the present invention is not limited to these.

[Example 1]

Tobacco lamina (leaf tobacco) was dry-ground in a Hosokawa Micron ACM machine to obtain tobacco powder. For the tobacco powder in question, the cumulative 50% particle size (D50) and cumulative 90% particle size distribution in volume-based particle size distribution were determined by dry laser diffraction using Mastersizer (brand name, manufactured by Spectris Co., Ltd., Malvern Panalytical Division). The % particle diameter (D90) was measured and was 57㎛ and 216㎛, respectively.

Using the tobacco powder, tobacco sheets were manufactured by rolling. Specifically, 87 parts by mass of the tobacco powder, 12 parts by mass of glycerin as an aerosol generator, and 1 part by mass of carboxymethyl cellulose as a molding agent were mixed and kneaded in an extrusion molding machine. The kneaded product was molded into a sheet using two pairs of metal rolls and dried in a hot air circulation oven at 80°C to obtain a tobacco sheet. The cigarette sheet was shredded into a size of 0.8 mm x 9.5 mm using a shredder.

For the recarved tobacco sheets, swelling properties were measured. Specifically, the re-engraved tobacco sheet was left in a 60% conditioned room at 22°C for 48 hours, and then the swelling properties were measured using DD-60A (trade name, manufactured by Borgwaldt). The measurement was performed by placing 15 g of the recut tobacco sheet in a cylindrical container with an inner diameter of 60 mm and determining the volume when compressed for 30 seconds with a load of 3 kg. The results are shown in Table 1. In addition, in Table 1, the swelling properties are expressed as an increase rate (%) of the swelling properties relative to the reference value, based on the swelling properties of Comparative Example 1 described later.

[Example 2]

Examples except that tobacco powder having a cumulative 50% particle size (D50) and a cumulative 90% particle size (D90) of 121 ㎛ and 389 ㎛, respectively, in the volume-based particle size distribution by dry laser diffraction was used as the tobacco powder. Cigarette sheets were produced and evaluated as in 1. The results are shown in Table 1.

[Example 3]

Examples except that tobacco powder having a cumulative 50% particle size (D50) and a cumulative 90% particle size (D90) of 225 ㎛ and 623 ㎛, respectively, in the volume-based particle size distribution by dry laser diffraction was used as the tobacco powder. Cigarette sheets were produced and evaluated as in 1. The results are shown in Table 1.

[Comparative Example 1]

Examples except that, as the tobacco powder, tobacco powder with a cumulative 50% particle size (D50) and a cumulative 90% particle size (D90) of 32 ㎛ and 84 ㎛, respectively, in the volume-based particle size distribution by dry laser diffraction was used. Cigarette sheets were produced and evaluated as in 1. The results are shown in Table 1.

[Table 1]

From Table 1, the tobacco sheets of Examples 1 to 3, which are the tobacco sheets according to the present embodiment, have swelling properties compared to the tobacco sheets of Comparative Example 1, in which the D90 of the tobacco powder measured by dry laser diffraction is less than 200 μm. Improved. Additionally, in Examples 1 to 3, tobacco sheets were manufactured by the rolling method, but even when the tobacco sheets were manufactured by the casting method, the swelling properties were improved.

Hereinafter, the first embodiment will be explained using Reference Example A and Reference Comparative Example A.

[Reference example A1]

Tobacco leaves were pulverized using a grinder (ACM-5 manufactured by Hosokawa Micron) to a D90 of 400 ㎛ to obtain leaf tobacco particles. D90 was measured with a Mastersizer (manufactured by Malvern). Leaf tobacco particles and Sunrose F20HC (cellulose ether manufactured by Nippon Paper Co., Ltd.) as a binder were dry blended using a mixer. Next, glycerin as an aerosol generator and water as a medium were added to the dry blend, and mixed with a mixer to prepare moisture. The composition of each component is as shown in Table A1.

Using a kneader (DG-1, manufactured by Dalton), the wet powder was kneaded six times at room temperature to obtain a mixture. The die shape was circular, and the screw rotation speed was 60 rpm.

The moisture content was sandwiched between two Teflon (registered trademark) films (NITOFLON(R) No. 900UL, manufactured by Nitto Denko Co., Ltd.), and using a calender device (manufactured by Glass Roll Machinery Co., Ltd.), the film was adjusted to a predetermined thickness (exceeding 100 ㎛). ) was rolled in four steps until a laminate with a thickness of 250㎛ was prepared with a layer structure of film/wet sheet/film. The roll gaps in the first to fourth stages were 1100 μm, 500 μm, 300 μm, and 200 μm, respectively. The roll gap in the fourth stage is thicker than the thickness of the final sheet obtained, because the sheet, released from the pressure between the rollers, expands to near the final thickness.

One Teflon (registered trademark) film was peeled from the laminate and dried at 80°C for 1 to 2 minutes using a ventilated dryer. Next, another film was peeled off, the wet sheet was dried under the same conditions, and a tobacco sheet of this embodiment was produced and evaluated.

[Table A1]

In the wet mass of Table A1, the tobacco leaf grinds, glycerin, and binder represent the dry mass, and the water represents the total amount of the input mass and the moisture mass contained in the tobacco leaf grinds, glycerin, and binder.

[Reference examples A2, A3]

Tobacco sheets were manufactured and evaluated in the same manner as Reference Example A1, except that leaf tobacco particles with D90 of 600 ㎛ and 800 ㎛ were used, respectively.

[Reference Comparative Examples A1, A2]

Tobacco sheets were manufactured and evaluated in the same manner as Reference Example A1, except that leaf tobacco particles with D90 of 80 ㎛ and 200 ㎛ were used, respectively.

[Reference example A4]

Tobacco sheets were produced and evaluated in the same manner as Reference Example A1, except that leaf tobacco particles with a D90 of 200 μm were used, and the mass ratio of water in the moisture was set to 50WB mass%.

[Reference Comparative Examples A3, A4]

Tobacco sheets were produced and evaluated in the same manner as Reference Example A1, except that leaf tobacco particles with a D90 of 200 μm were used, and the mass ratio of water in the moisture was set to 30 and 40 WB mass%, respectively. These results are shown in Table A3. The 'amount of water in moisture' in Table A3 corresponds to the amount of water in mass ratio in moisture in Table A1.

[Reference Example A5 and Reference Comparative Example A5]

Tobacco sheets with sheet densities of 0.75 g/cm ³ and 0.96 g/cm ³ (Reference Example A5) and tobacco sheets with sheet densities of 1.19 g/cm ³ (Reference Comparative Example A5) were prepared by casting according to the conventional method. Each was manufactured. As a result of conducting a smoking test using the obtained tobacco sheet, it was confirmed that the smoking article using the sheet of Reference Example A5 had better delivery of flavor components in the initial stage of inhalation compared to the smoking article using the sheet of Reference Comparative Example A5. From this point of view, it was inferred that the delivery of flavor components at the initial stage of inhalation was also good for smoking articles using the tobacco sheets obtained in Reference Examples A1 to A3.

Below, the evaluation method is explained.

[Smoking test]

A non-combustion heating type smoking system as shown in FIG. 2 was prepared. However, in this example, an internal heating type smoking system was used. Next, a Cambridge filter was connected to the intake end. In each example, the prepared tobacco sheets were cut to prepare pieces. The piece was filled at 70% by volume in a wrapper 22 having a length of 12 mm and a diameter of 7 mm, and a tobacco segment 20A was prepared. The system was subjected to a smoking test using a smoker. Specifically, using an automatic smoker (R-26 manufactured by Borgwaldt KC Inc.), samples were automatically smoked under the conditions of smoking volume of 27.5 ml/sec, smoking time of 2 seconds/puff, smoking frequency of 2 puffs/min, and 14 puffs. It was smoked, and the particulate matter in the cigarette smoke per puff was collected with a Cambridge filter (CM-133 manufactured by Borgwaldt KC Inc.). The Cambridge filter after the smoking test was shaken in 10 mL of methanol (manufactured by Wako Pure Chemical Industries, Ltd., Reagent Special Grade) to obtain an analysis sample. 1 μL of the obtained analysis sample was collected with a micro syringe and analyzed by gas chromatography mass spectrometry (GC-MSD manufactured by Agilent, GC: 7890A, MS: 5975C).

[density]

The cigarette sheet was cut into 55 mm squares, the mass (building mass) was measured, and the mass (basis weight) per unit area was calculated. Additionally, the thickness was measured using a thickness gauge (manufactured by Mitutoyo), and the density was calculated from the basis weight and thickness.

[Reference example A5-1]

The above Reference Example A5 was reproduced. That is, a tobacco sheet was manufactured as follows.

1) The tobacco lamina was pulverized with a lab mill, and tobacco particles with a raw material particle size (D90) = 300 μm were obtained.

2) Softwood pulp was crushed with a lap mill.

3) These powdery materials were placed in a Ken mixer and stirred and mixed.

4) Water, glycerin, and Sunrose F30MC (cellulose ether manufactured by Nippon Paper Co., Ltd.) as a binder were added to a disperger (manufactured by Primix) and mixed for 30 minutes.

5) The above pulp was added to this mixture and dispersed for 30 minutes with a disperger (manufactured by Primix).

6) The mixture obtained in 5) above was cast on an iron plate.

7) The iron plate on which the cast film was formed was placed in a ventilated dryer set at 80°C, dried for 30 minutes, and then peeled from the iron plate to obtain a tobacco sheet.

[Table A2]

In the wet mass of Table A2, the tobacco leaf grinds, glycerin, and binder represent the dry mass, and the water represents the total amount of the input mass and the water mass contained in the tobacco leaf grinds, glycerin, and binder.

[Reference example A6]

Tobacco sheets were manufactured and evaluated in the same manner as Reference Example A5-1, except that leaf tobacco particles with a D90 of 80 μm were used. These results are shown in Table A3.

[Table A3]

Hereinafter, the second embodiment will be explained using Reference Example B and Reference Comparative Example B.

[Reference example B1]

Tobacco leaves were pulverized using a grinder (ACM-5 manufactured by Hosokawa Micron) to a D90 of 70 μm to obtain leaf tobacco particles. D90 was measured with a Mastersizer (manufactured by Malvern). Leaf tobacco particles and carboxymethyl cellulose (manufactured by Nippon Paper Co., Ltd., brand name Sunrose F30MC) as a binder were dry blended using a mixer. Next, glycerin as a humectant and water as a medium were added to the dry blend, and mixed with a mixer to prepare moisture. The combination of each component is as shown in Table B1.

Using a kneader (DG-1, manufactured by Dalton), the wet powder was kneaded six times at room temperature to obtain a mixture. A T die was used as the die, and the screw rotation speed was 38.5 rpm.

The wet material was sandwiched between two Teflon (registered trademark) films (NITOFLON(R) No. 900UL, manufactured by Nitto Denko Co., Ltd.), and using a calender device (manufactured by Glass Roll Machinery Co., Ltd.), the film was adjusted to a predetermined thickness (exceeding 100 ㎛). ) was rolled in four steps to prepare a laminate with a thickness of 105 ㎛ having a layer structure of film/wet sheet/film. The roll gaps in the first to fourth stages were 650 μm, 330 μm, 180 μm, and 5 μm, respectively. The roll gap in the fourth stage is thicker than the thickness of the final sheet obtained, because the sheet, released from the pressure between the rollers, expands to near the final thickness.

One Teflon (registered trademark) film was peeled from the laminate and dried at 80°C for 1 to 2 minutes using a ventilated dryer. Next, another film was peeled off, the wet sheet was dried under the same conditions, and a sheet of this embodiment was manufactured.

The sheet thus obtained was left to stand for 48 hours under conditions of room temperature of 22°C and relative humidity of 60%. Next, a plurality of openings with an opening size of 0.2 mm x 0.2 mm were prepared on the sheet using a laser processing device (manufactured by TROTEC). The opening spacing was set at equal intervals of 0.4 mm. Detailed conditions are shown in Table B2. The processed tobacco sheet obtained in this way was evaluated for air permeability and release profile by the method described later. The results are shown in Table B2 and Figure 4. The vertical axis in Figure 4 represents the amount of nicotine standardized as the amount of nicotine per flavored smoking article. In other words, when the amount of nicotine detected in 1 puff is x(g) and the amount of nicotine per puff (the amount of nicotine in the total of 1 to 14 puffs) is y(g), the value of x/y is plotted on the vertical axis. .

<Breathability>

The sheet after opening was left to stand for 48 hours at room temperature of 22°C and relative humidity of 60%. Next, this sheet was cut into a size of 40 mm x 240 mm, and the air permeability measurement device (PPM1000M manufactured by Cerulean) was used to measure the measurement conditions under the differential pressure of 1 kPa and the circular measurement head of 2 cm ² . The measurement environment was room temperature of 22°C and relative humidity of 60%. In addition, the air permeability was calculated as the air passage flow rate (cm ³ ) per minute per 1 cm ² under the condition of a differential pressure of 1 kPa.

<Ingredient Release Profile>

1) The sheet after opening was left to stand for 48 hours at room temperature of 22°C and relative humidity of 60%.

2) Thickness and basis weight were measured, and sheet density was calculated.

3) The sheet was cut to a size of 55mm x 0.8mm.

4) The sheet was cut and filled to a predetermined volume filling rate on paper paper of 7.1, and cut into 12 mm lengths.

5) A 12 mm long smoking segment (tobacco segment), a filter, and a paper tube were connected to produce a smoking test roll (flavor aspiration article).

6) A non-combustion heating type smoking system as shown in FIG. 2 was prepared. However, in this example, an internal heating type smoking system was used. Next, a Cambridge filter was connected to the intake end. In each example, the prepared sheets were cut to prepare pieces. The piece was filled at 70% by volume in a wrapper 22 with a length of 12 mm and a diameter of 7 mm, and a smoking segment 20A was prepared. The system was subjected to a smoking test using a smoker. Specifically, using an automatic smoker (R-26 manufactured by Borgwaldt KC Inc.), samples were automatically smoked under the conditions of smoking volume of 27.5 ml/sec, smoking time of 2 seconds/puff, smoking frequency of 2 puffs/min, and 14 puffs. It was smoked, and the particulate matter in the cigarette smoke per puff was collected with a Cambridge filter (CM-133 manufactured by Borgwaldt KC Inc.). The Cambridge filter after the smoking test was shaken in 10 mL of methanol (manufactured by Wako Pure Chemical Industries, Ltd., Reagent Special Grade) to obtain an analysis sample. 1 μL of the obtained analysis sample was collected with a micro syringe and analyzed by gas chromatography mass spectrometry (GC-MSD manufactured by Agilent, GC: 7890A, MS: 5975C).

[Table B1]

[Reference Examples B2 to B4, Reference Comparative Example B1]

By changing the laser processing conditions, a sheet having air permeability as shown in Table B2 was prepared. Each sheet was used, and smoking test rolls were prepared and evaluated in the same manner as Reference Example B1, except that the filling rate was changed. The results are shown in Figure 4.

[Table B2]

As shown in the figure, the smoking article using the sheet of this embodiment can achieve an excellent profile in that the initial puff delivery is high and the same delivery as that of the conventional sheet can be secured even in the latter half.

Embodiments are shown below.

[1] A tobacco sheet for a non-combustible heated flavor inhaler, comprising tobacco powder having a cumulative 90% particle size (D90) of 200 ㎛ or more in the volume-based particle size distribution measured by dry laser diffraction.

[2] The tobacco sheet for a non-combustible heating type flavor inhaler according to [1], wherein the tobacco powder is at least one tobacco raw material selected from the group consisting of leaf tobacco, stems, and remaining branches.

[3] The tobacco sheet for a non-combustion heating type flavor inhaler according to [1] or [2], wherein the proportion of the tobacco powder contained in 100% by mass of the tobacco sheet is 45 to 95% by mass.

[4] The tobacco sheet for a non-combustible heated flavor inhaler according to any one of [1] to [3], wherein the tobacco sheet further contains an aerosol generator.

[5] The tobacco sheet for a non-combustible heating type flavor inhaler according to [4], wherein the aerosol generator is at least one selected from the group consisting of glycerin, propylene glycol, and 1,3-butanediol.

[6] The tobacco sheet for a non-combustion heating type flavor inhaler according to [4] or [5], wherein the proportion of the aerosol generator contained in 100% by mass of the tobacco sheet is 4 to 50% by mass.

[7] The tobacco sheet for a non-combustible heating type flavor inhaler according to any one of [1] to [6], wherein the tobacco sheet further contains a molding agent.

[8] The tobacco sheet for a non-combustible heating type flavor inhaler according to [7], wherein the molding agent is at least one selected from the group consisting of polysaccharides, proteins, and synthetic polymers.

[9] The tobacco sheet for a non-combustible heating type flavor inhaler according to [7] or [8], wherein the proportion of the molding agent contained in 100% by mass of the tobacco sheet is 0.1 to 15% by mass.

[10] A non-combustion heating type flavor inhaler comprising a tobacco-containing segment comprising the tobacco sheet for a non-combustion heating type flavor inhaler according to any one of [1] to [9].

[11] The non-combustion heating type flavor inhaler described in [10],

a heating device for heating the tobacco-containing segment;

A non-combustion heated flavor aspiration system comprising a.

(1) Tobacco sheets with a density of 1.0 g/cm ³ or less.

(2) The sheet according to (1), which is a pressure molded sheet.

(3) The sheet according to (1) or (2), which is a wet powder containing tobacco particles with a D90 of 200 μm or more and a liquid medium, and is manufactured from a wet powder with a moisture content of 50% by mass or more.

(4) The sheet according to any one of (1) to (3), comprising tobacco particles having a D90 of 300 μm or more.

(5) The sheet according to (4), comprising tobacco particles with a D90 of 500 μm or more.

(6) A non-combustible heating type smoking article comprising the tobacco sheet according to any one of (1) to (5) above or a material derived therefrom.

(7) At least, step 1 of mixing tobacco particles, binder, and medium to prepare a mixture,

Step 2 of preparing a wet sheet by extruding the mixture from a piezoelectric or die;

Step 3 of drying the wet sheet

The manufacturing method according to any one of (1) to (5), comprising:

(8) The production method according to (7), wherein the medium contains water.

(9) The manufacturing method according to (7) or (8), wherein step 2 includes preparing a laminate sheet in which a wet sheet exists between two base films.

(10) The manufacturing method according to any one of (7) to (9), wherein step 1 includes kneading at least the tobacco material, binder, and medium in a single-axis or multi-axis kneader.

(11) The production method according to any one of (7) to (10), wherein the mixture contains 20 to 80% by mass of a medium based on the total amount of the mixture.

<1> moisturizer,

With a binder,

Contains either or both flavoring agents or molding aids,

A smoking composition sheet, that is, a cigarette sheet, having an air permeability exceeding 0 Corestar units.

<2> The sheet according to <1>, wherein the air permeability is 500 Coresta units or more.

<3><1> wherein the flavoring agent is selected from the group consisting of tobacco, flavoring, and combinations thereof. or the sheet described in <2>

<4><1> wherein the moisturizing agent is a polyhydric alcohol. to <3> The sheet described in any one of the following.

<5><1> wherein the binder is selected from the group consisting of polysaccharides, proteins, synthetic polymers, and combinations thereof. to <4> The sheet described in any one of the following.

<6><1> wherein the molding aid is vegetable fiber or synthetic fiber, pulp or non-woven fabric. to <5> The sheet described in any one of the following.

<7> Pressure formed sheet, <1> to <6> The sheet described in any one of the following.

<8><1> having a plurality of holes provided by physical processing. to <6> The sheet described in any one of the following.

<9><1> having a plurality of holes provided by chemical processing; to <7> The sheet described in any one of the following.

1: Non-combustible heated flavor aspirator
2: Tobacco-containing segment
3: Cooling segment
4: Center hole segment
5: Filter segment
6: Mouthpiece segment
7: Barrel-shaped member
8: perforation
9: second packed layer
10: Second inner plug wrapper
11: Outer plug wrapper
12: Mouthpiece lining paper
13: Heating device
14: body
15: heater
16: Metal pipe
17: Battery unit
18: control unit
19: recess
20A: Tobacco-containing segment
21: filling
22: Rapper
T: Cigarette sheet

Claims (7)

A tobacco sheet for a non-combustible heated flavor inhaler, comprising tobacco powder having a cumulative 90% particle size (D90) of 200 ㎛ or more in the volume-based particle size distribution measured by dry laser diffraction method. According to paragraph 1,
A sheet having a density of 1.0 g/cm ³ or less. According to claim 1 or 2,
Sheet, which is a pressure formed sheet. According to any one of claims 1 to 3,
moisturizer,
With a binder,
It further contains either or both flavoring agents or molding aids,
Sheet with air permeability exceeding 0 Corestar units. According to clause 4,
A sheet having an air permeability of 500 Coresta units or more. A tobacco-containing segment comprising a tobacco sheet for a non-combustible heated flavor inhaler according to any one of claims 1 to 5.
A non-combustible heated flavor aspirator comprising a. A non-combustion heating type flavor aspirator according to claim 6,
Heating device for heating the tobacco-containing segments
A non-combustion heated flavor aspiration system comprising a.