CN118019460A

CN118019460A - Tobacco sheet for non-combustion heating type flavor inhaler, and non-combustion heating type flavor inhaler system

Info

Publication number: CN118019460A
Application number: CN202280065547.2A
Authority: CN
Inventors: 小出明弘; 打井公隆; 松田尚大; 桥本彩香
Original assignee: Japan Tobacco Inc
Current assignee: Japan Tobacco Inc
Priority date: 2021-10-01
Filing date: 2022-06-28
Publication date: 2024-05-10
Also published as: WO2023053633A1; WO2023054688A1; CN118019463A; CN117597034A

Abstract

The present invention relates to a tobacco sheet for a non-combustion heating type flavor inhaler, which comprises a tobacco powder having a cumulative 90% particle diameter (D90) of 200 [ mu ] m or more in a volume-based particle size distribution measured by a dry laser diffraction method.

Description

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

Technical Field

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

Background

In a combustion type flavor aspirator (cigarette), a tobacco filler including tobacco leaves is combusted to obtain flavor. As an alternative to the combustion type flavor aspirator, a non-combustion heating type flavor aspirator has been proposed in which a flavor source such as a tobacco sheet is heated instead of being burned to obtain a flavor. The heating temperature of the non-combustion heating type flavor aspirator is lower than the combustion temperature of the combustion type flavor aspirator, for example, about 400 ℃ or lower. In this way, since the heating temperature of the non-combustion heating type flavor aspirator is low, from the viewpoint of increasing the smoke amount, the non-combustion heating type flavor aspirator may be added with an aerosol generating agent to the flavor source. The aerosol generating agent is gasified by heating to generate an aerosol. The aerosol is supplied to the user along with flavor components such as tobacco components, and the user can obtain a sufficient flavor.

The non-combustion heating type flavor aspirator may include, for example: a tobacco-containing section filled with tobacco sheets or the like, a cooling section, and a filter section. The axial length of the tobacco-containing section of the non-combustion heated flavor aspirator is typically shorter than the axial length of the tobacco-containing section of the combustion flavor aspirator due to its relationship to the heating heater. Therefore, in the non-combustion heating type flavor aspirator, a large number of tobacco sheets or the like are filled in a short section containing tobacco segments in order to ensure the aerosol generation amount during heating. In order to fill a large number of tobacco sheets or the like in a short section, a non-combustion heating type flavor aspirator generally uses a tobacco sheet having low bulk, i.e., a high density. The fluffiness is a value indicating the volume of a given mass of filaments of tobacco sheet compressed for a given period of time under a given pressure. For example, patent documents 1 and 2 disclose tobacco sheets used for non-combustion heating type flavor aspirators.

Prior art literature

Patent literature

Patent document 1: japanese patent No. 5969923

Patent document 2: international publication No. 2020/058814

Disclosure of Invention

Problems to be solved by the invention

However, the present inventors have found that when a tobacco sheet having low bulk (high density) is used in consideration of the heating system, the heating capacity of the heater, and the generation of aerosol, the total heat capacity of the tobacco-containing segment increases, and therefore, depending on the heating method and the capacity of the heater, the tobacco sheet filled in the tobacco-containing segment may not sufficiently exert the aerosol generating action. In order to solve this problem, it is considered to reduce the total heat capacity of the tobacco-containing segment.

In order to reduce the total heat capacity of the tobacco-containing segment, the present inventors studied (1) reducing the specific heat of the tobacco raw material contained in the tobacco sheet and (2) using a tobacco sheet having high bulk (low density). However, it is difficult to reduce the specific heat of the tobacco material itself for (1), so it is considered that it is effective to reduce the total heat capacity of the tobacco-containing section by (2). Therefore, it is desired to develop a tobacco sheet with high bulk (low density) suitable for use in a non-combustion heated flavor aspirator.

The purpose of the present invention is to provide a tobacco sheet for a non-combustion heating type flavor-absorbing device, a non-combustion heating type flavor-absorbing device comprising the tobacco sheet, and a non-combustion heating type flavor-absorbing system.

Means for solving the problems

The present invention includes the following embodiments.

Mode 1

A tobacco sheet for a non-combustion heating type flavor inhaler, comprising a tobacco powder having a cumulative 90% particle diameter (D90) of 200 [ mu ] m or more in a volume-based particle size distribution measured by a dry laser diffraction method.

Mode 2

The sheet according to mode 1, which has a density of 1.0g/cm ³ or less.

Mode 3

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

Mode 4

The sheet according to any one of modes 1 to 3, further comprising:

A humectant(s),

Adhesive, and

Either or both of the flavoring agent or the shaping aid,

The sheet has a ventilation of greater than 0CORESTA Unit.

Mode 5

The sheet according to mode 4, wherein,

The air permeability is more than 500CORESTA Unit.

Mode 6

A non-combustion heating type flavor aspirator comprising a tobacco-containing segment comprising the non-combustion heating type flavor aspirator tobacco sheet according to any one of modes 1 to 5.

Mode 7

A non-combustion heated flavor pumping system, comprising:

The non-combustion heating type flavor aspirator of embodiment 6, and

And a heating device for heating the tobacco-containing section.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, a tobacco sheet for a non-combustion heating type flavor inhaler having high bulk, a non-combustion heating type flavor aspirator including the tobacco sheet, and a non-combustion heating type flavor aspiration system can be provided.

Drawings

Fig. 1 is a cross-sectional view showing an example of the non-combustion heating type flavor aspirator of the present embodiment.

Fig. 2 is a cross-sectional view showing an example of the non-combustion heating type flavor-absorbing system according to the present embodiment, (a) shows a state before the non-combustion heating type flavor-absorbing device is inserted into the heating device, and (b) shows a state in which the non-combustion heating type flavor-absorbing device is inserted into the heating device and heated.

Fig. 3 is a diagram illustrating one manner of tobacco segment.

Fig. 4 is a graph showing a release profile.

Symbol description

1. Non-combustion heating type fragrant aspirator

2. Tobacco-containing segment

3. Cooling section

4. Center hole section

5. Filter segment

6 Mouthpiece section

7 Tubular member

8 Perforations

9. Second filling layer

10. Second inner rod packing material

11. Outer rod packaging material

12. Cigarette holder lining paper

13. Heating device

14. Fuselage body

15. Heater

16. Metal tube

17. Battery cell

18. Control unit

19. Concave part

20A tobacco-containing segment

21. Filling material

22. Packaging material

T tobacco sheet

Detailed Description

[ Tobacco sheet for non-Combustion heating type flavor aspirator ]

The tobacco sheet for a non-combustion heating type flavor inhaler (hereinafter also referred to as "tobacco sheet") according to the present embodiment contains a tobacco powder having a cumulative 90% particle diameter (D90) of 200 μm or more in a volume-based particle size distribution measured by a dry laser diffraction method.

In the tobacco sheet of the present embodiment, since the D90 of the tobacco powder measured by the dry laser diffraction method is 200 μm or more, the voids between the tobacco powders in the tobacco sheet are large, and it is presumed that the voids contribute to the improvement of the bulk of the tobacco sheet. The tobacco sheet of the present embodiment preferably further contains an aerosol-generating agent and a molding agent, and the bulk of the tobacco sheet is further improved by setting the mixing ratio thereof to a predetermined range.

(Tobacco powder)

Examples of the tobacco powder contained in the tobacco sheet of the present embodiment include tobacco leaves, veins, residual stems, and the like. One kind of these may be used, or two or more kinds may be used in combination. They can be used as tobacco powder by cutting them into given sizes. The cumulative 90% particle diameter (D90) in the volume-based particle diameter distribution measured by the dry laser diffraction method is 200 μm or more, preferably 350 μm or more, and more preferably 500 μm or more as the size of the tobacco powder. The upper limit of the D90 range is not particularly limited, and may be, for example, 2000 μm or less.

In addition, from the viewpoint of further improving the bulk of the tobacco sheet, the cumulative 50% particle diameter (D50) in the volume-based particle size distribution measured by the dry laser diffraction method is preferably 40 μm or more, more preferably 100 μm or more, and still more preferably 200 μm or more. The upper limit of the D50 range is not particularly limited, and may be, for example, 1000 μm or less. In the present embodiment, the D90 and D50 can be measured by a dry laser diffraction method using, for example, a Mastersizer (trade name, company MALVERN PANALYTICAL, division).

The proportion of the tobacco powder contained in 100 mass% of the tobacco sheet is preferably 45 to 95 mass%. By setting the proportion of the tobacco powder to 45 mass% or more, tobacco aroma can be sufficiently generated upon heating. Further, by setting the ratio of the tobacco powder to 95% by mass or less, a sufficient amount of the aerosol-generating agent and the molding agent can be contained. The proportion of the tobacco powder is more preferably 50 to 93% by mass, still more preferably 55 to 90% by mass, particularly preferably 60 to 88% by mass.

(Aerosol generating agent)

From the viewpoint of increasing the amount of smoke during heating, the tobacco sheet of the present embodiment preferably further contains an aerosol-generating agent. Examples of the aerosol generating agent include glycerin, propylene glycol, and 1, 3-butanediol. One kind of these may be used, or two or more kinds may be used in combination.

When the aerosol-generating agent is contained in the tobacco sheet, the proportion of the aerosol-generating agent contained in 100 mass% of the tobacco sheet is preferably 4 to 50 mass%. By setting the proportion of the aerosol-generating agent to 4 mass% or more, sufficient aerosol can be generated upon heating from the viewpoint of the amount. In addition, by setting the proportion of the aerosol-generating agent to 50 mass% or less, sufficient aerosol can be generated upon heating from the viewpoint of heat capacity. The proportion of the aerosol generating agent is more preferably 6 to 40% by mass, still more preferably 8 to 30% by mass, particularly preferably 10 to 20% by mass.

(Molding agent)

From the viewpoint of ensuring the shape, the tobacco sheet of the present embodiment preferably further contains a molding agent. Examples of the molding agent include polysaccharides, proteins, and synthetic polymers. One kind of these may be used, or two or more kinds may be used in combination. Examples of the polysaccharide include cellulose derivatives and polysaccharides derived from natural sources.

Examples of the cellulose derivative include: cellulose ethers such as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxymethyl ethyl cellulose, hydroxypropyl methyl cellulose, benzyl cellulose, trityl cellulose, cyanoethyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, and aminoethyl cellulose; organic acid esters such as cellulose acetate, cellulose formate, cellulose propionate, cellulose butyrate, cellulose benzoate, cellulose phthalate, and tosyl cellulose; inorganic acid esters such as nitrocellulose, cellulose sulfate, cellulose phosphate, and cellulose xanthate.

Examples of the polysaccharide of natural origin include: guar gum, tara gum, locust bean gum, tamarind gum, pectin, gum arabic, gum tragacanth, karaya gum, gum ghatti (ghatti gum), arabinogalactan, flaxseed gum, cassia gum, psyllium seed gum, and sand sagebrush seed gum; polysaccharide derived from algae such as carrageenan, agar, alginic acid, propylene glycol alginate, red algae gelatin, and extract of vesicular algae; polysaccharides derived from microorganisms such as xanthan gum, gellan gum, curdlan, pullulan, agrobacterium succinoglycan (agrobacterium succinoglycan), welan gum, macrophomopsis gum, and neutral gum (rhamsan gum); polysaccharides derived from crustaceans such as chitin, chitosan, and glucosamine; starch, sodium starch glycolate, alpha starch, dextrin, and other starches.

Examples of the protein include: cereal proteins such as wheat gluten and rye gluten. Examples of the synthetic polymer include: polyphosphoric acid, sodium polyacrylate, polyvinylpyrrolidone, and the like.

When the molding agent is contained in the tobacco sheet, the proportion of the molding agent contained in 100 mass% of the tobacco sheet is preferably 0.1 to 15 mass%. By setting the proportion of the molding agent to 0.1 mass% or more, the raw material mixture can be molded into a sheet shape. Further, by setting the ratio of the molding agent to 15 mass% or less, it is possible to fully utilize other raw materials for securing the functions required for the tobacco-containing section of the non-combustion heating type flavor aspirator. The proportion of the molding agent is more preferably 0.2 to 13% by mass, still more preferably 0.5 to 12% by mass, particularly preferably 1 to 10% by mass.

(Reinforcing agent)

From the viewpoint of further improving physical properties, the tobacco sheet of the present embodiment may further contain a reinforcing agent. As the reinforcing agent, for example, there may be mentioned: fibrous pulp, insoluble fibers, fibrous synthetic cellulose and other fibrous substances, pectin suspension and other liquid substances forming a film when dried and having a surface coating function, and the like. One kind of these may be used, or two or more kinds may be used in combination.

When the reinforcing agent is contained in the tobacco sheet, the proportion of the reinforcing agent contained in 100 mass% of the tobacco sheet is preferably 4 to 60 mass%. In this range, other materials for ensuring the function required for the tobacco-containing section of the non-combustion heating type flavor aspirator can be fully utilized. The proportion of the reinforcing agent is more preferably 4.5 to 55% by mass, still more preferably 5 to 50% by mass.

(Moisturizer)

From the viewpoint of maintaining quality, the tobacco sheet of the present embodiment may further contain a humectant. Examples of the humectant include: sugar alcohols such as sorbitol, erythritol, xylitol, maltitol, lactitol, mannitol, and reduced maltose syrup. One kind of these may be used, or two or more kinds may be used in combination.

When the humectant is contained in the tobacco sheet, the proportion of the humectant contained in 100 mass% of the tobacco sheet is preferably 1 to 15 mass%. In this range, other materials for ensuring the function required for the tobacco-containing section of the non-combustion heating type flavor aspirator can be fully utilized. The content of the humectant is more preferably 2 to 12% by mass, and still more preferably 3 to 10% by mass.

(Other Components)

The tobacco sheet of the present embodiment may contain, in addition to the tobacco powder, the aerosol-generating agent, the molding agent, the reinforcing agent, and the humectant, flavoring agents such as flavors and flavoring agents, coloring agents, humectants, preservatives, and diluents such as inorganic substances, as necessary.

(Fluffiness)

The tobacco sheet of the present embodiment preferably has a bulk of 190cc/100g or more. By setting the bulk to 190cc/100g or more, the total heat capacity of the tobacco-containing segment of the non-combustion heating type flavor aspirator can be sufficiently reduced, and the tobacco sheet filled in the tobacco-containing segment can contribute more to aerosol generation. The bulk is more preferably 210cc/100g or more, and still more preferably 230cc/100g or more. The upper limit of the range of the fluffiness is not particularly limited, and may be, for example, 800cc/100g or less. The fluffiness was measured by cutting tobacco pieces to a size of 0.8mm×9.5mm, storing the cut tobacco pieces in a 60% room at 22℃for 48 hours, and measuring the cut tobacco pieces with DD-60A (trade name, manufactured by Borgward Co.). The measurement was performed by placing 15g of the cut tobacco sheet into a cylindrical container having an inner diameter of 60mm and obtaining a volume when compressed for 30 seconds under a load of 3 kg.

(Constitution of tobacco sheet)

In the present embodiment, the "tobacco sheet" is formed by molding a component constituting the tobacco sheet, such as tobacco powder, into a sheet shape. Here, "sheet" means a shape having 1 pair of main surfaces and side surfaces which are substantially parallel. The length and width of the tobacco sheet are not particularly limited and may be appropriately adjusted according to the manner of filling. The thickness of the tobacco sheet is not particularly limited, but is preferably 100 to 1000 μm, more preferably 150 to 600 μm, in view of both heat transfer efficiency and strength.

(Method for producing tobacco sheet)

The tobacco sheet according to the present embodiment can be produced by a known method such as a rolling method or a casting method. Details of various tobacco sheets produced by such a method are disclosed in "tobacco dictionary, tobacco comprehensive research center, 2009.3.31".

< Calendering method >)

As a method for producing a tobacco sheet by rolling, for example, a method including the following steps is given.

(1) And a step of mixing water, tobacco powder, an aerosol generator, a molding agent and a reinforcing agent to obtain a mixture.

(2) And a step of throwing the mixture into a calender roll to calender.

(3) And drying the rolled and molded product by a dryer.

In the case of producing a tobacco sheet by this method, the surface of the calender roll may be heated or cooled according to the purpose, or the rotation speed of the calender roll may be adjusted. In addition, the interval between the calender rolls may be adjusted. In order to obtain a desired weight per unit area of the tobacco sheet, 1 or more calender rolls may be used.

< Casting method >)

As a method for producing a tobacco sheet by casting, for example, a method including the following steps can be cited.

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

(2) And a step of forming a tobacco sheet by thinly stretching (casting) the mixture and drying the stretched mixture.

In the case of producing a tobacco sheet by this method, a step of removing a part of components such as nitrosamine by ultraviolet irradiation or X-ray irradiation of a slurry obtained by mixing water, tobacco powder, an aerosol generator, a molding agent, and pulp may be added.

Non-combustion heating type flavor aspirator

The non-combustion heating type flavor aspirator of the present embodiment includes a tobacco-containing segment including the tobacco sheet of the present embodiment and the like. The non-combustion heating type flavor aspirator of the present embodiment is provided with the tobacco-containing segment filled with the tobacco sheet or the like having high fluffiness of the present embodiment, and therefore, the total heat capacity of the tobacco-containing segment can be sufficiently reduced, and the tobacco sheet filled in the tobacco-containing segment contributes to the generation of aerosol.

Fig. 1 shows an example of the non-combustion heating type flavor aspirator according to the present embodiment. The non-combustion heating type flavor aspirator 1 shown in fig. 1 includes: a tobacco-containing segment 2 filled with a tobacco sheet or the like of the present embodiment, a cylindrical cooling segment 3 having perforations 8 on the circumference, a central hole segment 4, and a filter segment 5. The non-combustion heating type flavor aspirator of the present embodiment may have other sections in addition to the tobacco-containing section, the cooling section, the center hole section, and the filter section.

The length in the axial direction of the non-combustion heating type flavor aspirator according to the present embodiment is not particularly limited, but is preferably 40mm to 90mm, more preferably 50mm to 75mm, and even more preferably 50mm to 60 mm. The circumferential length of the non-combustion heating type flavor aspirator is preferably 16mm to 25mm, more preferably 20mm to 24mm, and even more preferably 21mm to 23 mm. Examples of the means include a tobacco-containing segment having a length of 20mm, a cooling segment having a length of 20mm, a central hole segment having a length of 8mm, and a filter segment having a length of 7 mm. The length of the filter segment may be selected in a range of 4mm to 10 mm. In addition, the ventilation resistance of the filter segments at this time may be selected so that the average per segment is 15mmH ₂ O/seg or more and 60mmH ₂ O/seg or less. The length of each of these segments may be appropriately changed according to manufacturing flexibility, required quality, and the like. Further, even if only the filter segment is disposed downstream of the cooling segment without using the center hole segment, the filter segment can function as a non-combustion heating type flavor aspirator.

(Tobacco-containing section)

The tobacco-containing segment 2 is filled with a roll paper (hereinafter also referred to as a wrapping material) with a tobacco sheet or the like according to the present embodiment. The method of filling the roll paper (hereinafter also referred to as a wrapping material) with the tobacco sheet or the like is not particularly limited, and for example, the tobacco sheet or the like may be wrapped with the wrapping material or the tobacco sheet or the like may be filled with a tubular wrapping material. When the shape of the tobacco sheet has a longitudinal direction as in the case of a rectangular shape, the tobacco sheet and the like may be filled so that the longitudinal direction is not a specific direction in the packaging material, or may be aligned so that the longitudinal direction is the axial direction of the tobacco-containing segment 2 or a direction perpendicular to the axial direction.

(Cooling section)

As shown in fig. 1, the cooling section 3 is constituted by a tubular member 7. The tubular member 7 may be, for example, a paper tube formed by processing thick paper into a cylindrical shape.

The tubular member 7 and a mouthpiece backing paper 12 described later are provided with perforations 8 penetrating through both. By the presence of the perforations 8, external air is introduced into the cooling section 3 during suction. As a result, the aerosol-gasifying component produced by heating the tobacco-containing section 2 is brought into contact with the external atmosphere, and the temperature thereof is lowered, so that liquefaction occurs to form an aerosol. The diameter (diameter length) of the through hole 8 is not particularly limited, and may be, for example, 0.5mm or more and 1.5mm or less. The number of the perforations 8 is not particularly limited, and may be 1 or 2 or more. For example, a plurality of perforations 8 may be provided on the circumference of the cooling section 3.

The amount of external air introduced from the through holes 8 is preferably 85% by volume or less, more preferably 80% by volume or less, relative to the volume of the total air sucked by the user. By setting the ratio of the amount of the external air to 85% by volume or less, the reduction in flavor due to dilution with the external air can be sufficiently suppressed. In other words, this is also referred to as a ventilation ratio. The lower limit of the range of the ventilation ratio is preferably 55% by volume or more, more preferably 60% by volume or more, from the viewpoint of cooling performance.

In addition, the cooling section may be a section comprising a sheet of suitably constructed material after creasing, pleating, or folding. The cross-sectional profile of such elements sometimes shows randomly oriented channels. Additionally, the cooling section may comprise bundles of longitudinally extending tubes. Such a cooling section may be formed, for example, by a roll of paper being gathered, pleated, or folded sheet material.

The length of the cooling section in the axial direction may be, for example, 7mm or more and 28mm or less, and may be, for example, 18mm. In addition, the cooling section may have a substantially circular axial cross-sectional shape, and may have a diameter of, for example, 5mm or more and 10mm or less, and may have a diameter of, for example, about 7mm.

(Central hole section)

The center hole section is composed of a filling layer having 1 or more hollow portions and an inner rod packing material (inner roll paper) that covers the filling layer. For example, as shown in fig. 1, the center hole section 4 is constituted by a second filling layer 9 having a hollow portion and a second inner rod packing material 10 that covers the second filling layer 9. The central hole section 4 has a function of improving the strength of the mouthpiece section 6. The second filler layer 9 may be, for example, a rod having an inner diameter of 1.0mm or more and 5.0mm or less, which is obtained by filling cellulose acetate fibers at a high density, adding 6 mass% or more and 20 mass% or less of a plasticizer containing triacetin to the mass of cellulose acetate, and curing the plasticizer. The second filler layer 9 has a high fiber packing density, and therefore, air and aerosol flow only through the hollow portion at the time of suction, and substantially do not flow into the second filler layer 9. Since the second filling layer 9 inside the central hole section 4 is a fiber filling layer, the feeling of touch from the outside in use is not substantially felt uncomfortable by the user. It should be noted that the central hole section 4 may not have the second inner rod packing material 10 but may be maintained in its shape by thermoforming.

(Filter section)

The constitution of the filter segment 5 is not particularly limited, and may be constituted by a single or a plurality of filler layers. The outside of the filling layer may be wrapped with one or more rolls of paper. The average ventilation resistance per section of the filter section 5 may be appropriately changed according to the amount of filler, material, etc. filled in the filter section 5. For example, in the case where the filler is cellulose acetate fiber, if the amount of cellulose acetate fiber filled in the filter segment 5 is increased, the ventilation resistance is increased. In the case where the filler is cellulose acetate fiber, the cellulose acetate fiber may have a packing density of 0.13 to 0.18g/cm ³. The air flow resistance was measured by an air flow resistance measuring instrument (trade name: SODIMAX, SODIM, inc.).

The length of the circumference of the filter segment 5 is not particularly limited, but is preferably 16 to 25mm, more preferably 20 to 24mm, and even more preferably 21 to 23mm. The axial length of the filter segment 5 may be selected to be 4 to 10mm, and may be selected so that the ventilation resistance thereof is 15 to 60mmH ₂ O/seg. The axial length of the filter segments 5 is preferably 5 to 9mm, more preferably 6 to 8mm. The shape of the cross section of the filter segment 5 is not particularly limited, and may be, for example, circular, elliptical, polygonal, or the like. In addition, destructive capsules containing flavours, flavourant beads, flavourants may be added directly to the filter segment 5.

As shown in fig. 1, the central hole section 4 and the filter section 5 may be connected by a plug wrap (outer wrap) 11. The outer rod packing material 11 may be, for example, cylindrical paper. In addition, the tobacco-containing section 2, the cooling section 3, and the joined central hole section 4 and filter section 5 may be joined by a tipping paper 12. The connection may be made by, for example, applying a slurry such as a vinyl acetate-based slurry to the inner side of the tipping paper 12, and winding the resulting material in the 3 sections. It should be noted that the sections may be connected together by separating a plurality of interleaving papers a plurality of times.

[ Non-Combustion heating type fragrance suction System ]

The non-combustion heating type flavor-absorbing system of the present embodiment is provided with the non-combustion heating type flavor-absorbing device of the present embodiment, and a heating device for heating the tobacco-containing section of the non-combustion heating type flavor-absorbing device. The non-combustion heating type flavor-absorbing system of the present embodiment may have other configurations in addition to the non-combustion heating type flavor-absorbing device of the present embodiment and the heating device described above.

Fig. 2 shows an example of the non-combustion heating type fragrance pumping system according to the present embodiment. The non-combustion heating type flavor suction system shown in fig. 2 includes the non-combustion heating type flavor suction device 1 of the present embodiment, and a heating device 13 for heating the tobacco-containing section of the non-combustion heating type flavor suction device 1 from the outside.

Fig. 2 (a) shows a state before the non-combustion heating type flavor aspirator 1 is inserted into the heating device 13, and fig. 2 (b) shows a state in which the non-combustion heating type flavor aspirator 1 is inserted into the heating device 13 to be heated. The heating device 13 shown in fig. 2 includes a body 14, a heater 15, a metal pipe 16, a battery unit 17, and a control unit 18. The main body 14 has a cylindrical recess 19, and the heater 15 and the metal pipe 16 are disposed on the inner side surface of the recess 19 at positions corresponding to the tobacco-containing sections of the non-combustion heating type flavor aspirator 1 inserted into the recess 19. The heater 15 may be a resistance-based heater, and the heater 15 may be heated by supplying electric power from the battery unit 17 in response to an instruction from the control unit 18 that performs temperature control. The heat emitted by the heater 15 is conducted through the metal tube 16 of high thermal conductivity to the tobacco-containing section of the non-combustion heated flavor aspirator 1.

Since the illustration is schematically shown in fig. 2 (b), a gap is present between the outer periphery of the non-combustion heating type flavor aspirator 1 and the inner periphery of the metal tube 16, and in practice, it is preferable that a gap is not present between the outer periphery of the non-combustion heating type flavor aspirator 1 and the inner periphery of the metal tube 16 for the purpose of efficiently conducting heat. The heating device 13 may heat the tobacco-containing section of the non-combustion heating type flavor aspirator 1 from the outside, or may heat the tobacco-containing section from the inside.

The heating temperature by the heating device is not particularly limited, but is preferably 400 ℃ or lower, more preferably 150 ℃ or higher and 400 ℃ or lower, and still more preferably 200 ℃ or higher and 350 ℃ or lower. The heating temperature means the temperature of the heater of the heating device.

The inventors have found that the response in the initial stage of the inhalation is high, that is, the satisfaction of use increases when the fragrance component in the initial stage of the inhalation is sufficiently delivered. In addition, the ventilation degree of the conventional tobacco sheet is zero or very low. To control the release of ingredients from these sheets, for example, the sheets are rolled to change the loading of the composition, or to change the density of the composition, etc. However, these conventional methods have a limit value in terms of the filling amount and density in order to maintain the roll shape, and have a disadvantage of narrow applicable range in product design. Thus, the present invention comprises: tobacco sheets having high bulk and further improved in use satisfaction (mode 1); and a tobacco sheet having high bulk and capable of realizing an excellent curve (mode 2). These modes are described below.

[ Mode 1]

As embodiment 1, a tobacco sheet having high bulk and further improved in use satisfaction will be described. The tobacco sheet of the present embodiment has a density of 1.0g/cm ³ or less.

(1) Adhesive agent

The binder is one of the above-mentioned molding agents, and is used for bonding tobacco powder to each other or to other components. In this embodiment, a known adhesive may be used. Examples of such binders include: polysaccharide such as guar gum and xanthan gum, cellulose derivatives such as CMC (carboxymethyl cellulose), CMC-Na (sodium salt of carboxymethyl cellulose), and HPC (hydroxypropyl cellulose). The upper limit of the content of the binder is preferably 6 mass% or less, and the lower limit is preferably 1 mass% or more, and more preferably 3 mass% or more, based on the dry mass (the mass excluding the mixed water, hereinafter the same) of the tobacco sheet. When the amount of the binder exceeds the upper limit value or falls below the lower limit value, the above-mentioned effects may not be sufficiently exhibited.

Examples of the binder used in the present embodiment include polysaccharides, proteins, and synthetic polymers. These specific examples are shown below. In this embodiment, these binders may be used in combination.

1) Polysaccharides and their use

1-1) Cellulose derivatives

[ Cellulose ethers ]

Methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxymethylethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, benzylcellulose, triphenylmethylcellulose, cyanoethylcellulose, carboxymethylcellulose, carboxyethylcellulose, aminoethylcellulose.

[ Cellulose esters ]

Organic acid esters: cellulose acetate, cellulose formate, cellulose propionate, cellulose butyrate, cellulose benzoate, cellulose phthalate, and tosyl cellulose.

Inorganic acid ester: nitrocellulose, cellulose sulfate, cellulose phosphate, and cellulose xanthate.

1-2) Polysaccharides of natural origin

[ Plant origin ]

Guar gum, tara gum, locust bean gum, tamarind gum, pectin, gum arabic, gum tragacanth, karaya gum, gum ghatti (ghatti gum), arabinogalactan, flaxseed gum, cassia gum, psyllium seed gum, and sand sagebrush seed gum.

[ Algae Source ]

Carrageenan, agar, alginic acid, propylene glycol alginate, red algae gum and a cyst algae extract.

[ Microbial origin ]

Xanthan gum, gellan gum, curdlan, pullulan, agrobacterium succinoglycan (agrobacterium succinoglycan), welan gum, macrophomopsis gum, neutral gum (rhamsan gum).

[ Crustacean Source ]

Chitin, chitosan, glucosamine.

[ Starches ]

Starch, sodium starch glycolate, alpha starch, dextrin.

2) Proteins

Wheat gluten and rye gluten.

3) Synthetic polymers

Polyphosphoric acid, sodium polyacrylate, and polyvinylpyrrolidone.

(2) Aerosol generating agent

In this embodiment, a known aerosol generating agent may be used, and examples thereof include: polyhydric alcohols such as glycerin and Propylene Glycol (PG), substances having boiling points exceeding 100deg.C such as triethyl citrate (TEC) and glyceryl triacetate. In this embodiment, the amount of the aerosol-generating agent in the tobacco sheet is preferably 5 to 40% by mass, more preferably 10 to 20% by mass, based on the dry mass (the mass excluding the mixed water, hereinafter the same). When the amount of the aerosol generating agent exceeds the upper limit, there is a risk that it is difficult to produce a tobacco sheet, and when the amount is below the lower limit, there is a risk that the smoke feeling is reduced.

(4) Emulsifying agent

In this embodiment, the tobacco sheet may contain an emulsifier. The emulsifier can increase the affinity of the lipophilic aerosol generator for hydrophilic tobacco materials. Therefore, it is effective to add an emulsifier particularly in the case of using a lipophilic aerosol generating agent. As the emulsifier, a known emulsifier can be used, and examples thereof include emulsifiers 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, per 100 parts by mass of the tobacco sheet.

(5) Fiber

The tobacco sheet of the present embodiment may not include fibers derived from tobacco and fibers derived from materials other than tobacco (e.g., cellulose). In this case, undesirable effects of these fibers on odor and the like caused by odor can be avoided. However, since the fibers cannot be practically completely removed, the amount of the fibers in the tobacco sheet is preferably 1.0 mass%, more preferably 0.5 mass% on a dry mass basis. The tobacco sheet of the present embodiment may contain 0.5 to 2.0% by mass in total of fibers derived from tobacco or fibers derived from materials other than tobacco. In this case, the fibers improve the strength of the tobacco sheet, and the balance between the flavor and the strength is excellent. In the present invention, the tobacco-derived fibers are fibers obtained by pulping a tobacco raw material pulp using a grinder or the like, and are different from the above-described tobacco materials.

(6) Spice

In this embodiment, the tobacco sheet may contain a flavor. Fragrances are substances that provide a fragrance, flavor. The perfume may be natural perfume or synthetic perfume. As the perfume, 1 kind of perfume may be used, or a mixture of plural kinds of perfumes may be used. As the flavoring, any flavoring commonly used in smoking articles can be used, and specific examples thereof will be described later. The flavoring may be included in the sheet for a smoking article in an amount capable of providing a preferred flavor or taste to the smoking article, for example, in an amount of preferably 1 to 30 mass%, more preferably 2 to 20 mass% in the tobacco sheet.

The type of the perfume is not particularly limited, and from the viewpoint of imparting a good fragrance feel, examples thereof include: acetoanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract (alfalfa extract), amyl alcohol, amyl butyrate, trans-anethole, star anise oil, apple juice, peru balsam oil, beeswax absolute, benzaldehyde, benzoin resin, benzyl alcohol, benzyl benzoate, benzyl propionate, 2, 3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil, carob absolute, beta-carotene, carrot juice, L-carvone, beta-caryophyllene, cinnamon bark oil, cedar oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, cinnamyl alcohol, cinnamyl cinnamate, citronellol, DL-citronellol, sage extract, cocoa, coffee kang brewing gram oil, coriander oil, cumyl aldehyde, artemisia oil, delta-decalactone, gamma-decalactone, capric 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-methylbutanoate, ethyl acetate, ethyl butyrate, ethyl caproate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl caprylate, ethyl oleate, ethyl palmitate, ethyl phenylacetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin glucoside, 2-ethyl-3, (5 or 6) -dimethylpyrazine, 5-ethyl-3-hydroxy-4-methyl-2 (5H) -furanone, 2-ethyl-3-methyl pyrazine, eucalyptol, fenugreek absolute, cytisine absolute, gentian liquor, geraniol, geranyl acetate, grape juice, guaiacol, guava extract, gamma-heptanolide, gamma-caprolactone, caproic acid, cis-3-hexen-1-ol, hexyl acetate, hexanol, hexyl phenylacetate, honey, 4-hydroxy-3-pentenoic acid lactone, 4-hydroxy-4- (3-hydroxy-1-butenyl) -3, 5-trimethyl-2-cyclohexen-1-one 4- (p-hydroxyphenyl) -2-butanone, sodium 4-hydroxyundecanoate, permanent flower (immortelle) absolute, beta-ionone, isoamyl acetate, isoamyl butyrate, isoamyl phenylacetate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute, cola tincture, rice oil, terpeneless lemon oil, licorice extract, linalool, linalyl acetate, round leaf angelica root oil, maltol, maple syrup, menthol, menthone, acetic acid-L-room oilEsters, p-methoxybenzaldehyde, methyl-2-pyrrolyl ketone, methyl anthranilate, methyl phenylacetate, methyl salicylate, 4' -methylacetophenone, methylcyclopentenolone, 3-methylpentanoic acid, mimosa absolute, molasses, myristic acid, nerol, nerolidol, gamma-nonolactone, nutmeg oil, delta-octalactone, octanal, caprylic acid, neroli oil, orange oil, iris oil, palmitic acid, omega-pentadecanol, peppermint oil, ilex paraguariensis leaf oil, phenethyl alcohol, phenethyl phenylacetate, phenylacetic acid, piperonal, propenyl guaiacol, propyl acetate, 3-propylidene-1-isobenzofuranone, prune juice, pyruvic acid the extract of Salvia officinalis, oleum Rosae Rugosae, rum, salvia officinalis, oleum Santali albi, spearmint oil, storax absolute, tagetes Erecta oil, tea distillate, alpha-terpineol, terpineyl 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-trimethyl-1-cyclohexenyl) 2-butene-4-one, 2, 6-trimethyl-2-cyclohexene-1, 4-dione, 4- (2, 6-trimethyl-1, 3-cyclohexadienyl) 2-butene-4-one, 2,3, 5-trimethylpyrazine, gamma-undecalactone, vanilla extract, vanillin, veratraldehyde, violet leaf absolute, N-ethyl-pair/>Alkyl-3-carboxamides (WS-3), ethyl-2- (p/>)Alkyl-3-carboxamide) acetate (WS-5), sugar (sucrose, fructose, etc.), cocoa powder, carob powder, caraway powder, licorice powder, orange peel powder, rose hip powder, chamomile pollen (flower) powder, lemon verbena powder, peppermint powder, leaf (leaf) powder, spearmint powder, black tea powder, natural plant flavors (e.g., jasmine oil, lemon oil, vetiver oil, angelica sinensis oil), esters (e.g., acetic acid/>Esters, isoamyl propionate, etc.), alcohols (e.g., phenethyl alcohol, cis-6-nonen-1-ol, etc.). These perfumes may be used singly or in combination of 1 kind or more than 2 kinds.

(7) Characteristics and morphology of tobacco sheet

1) Density of

The tobacco sheet of the present embodiment has a density of 1.0g/cm ³ or less. The tobacco sheet having such a low density can achieve sufficient flavor component delivery at the initial stage of smoking. The reason for this is not limited, and it is presumed that the reason for this is that the filling density of the tobacco filler in the smoking article can be reduced by the low-density tobacco sheet, and therefore the heat quantity per unit mass can be increased. In addition, cost reduction can also be achieved by a reduction in packing density. From these viewpoints, the density is preferably 0.95g/cm ³ or less, more preferably 0.75g/cm ³ or less. The lower limit of the density is not limited, but is preferably 0.5g/cm ³ or more from the viewpoint of strength and the like. In the present invention, the density can be calculated from the weight per unit area (average mass per unit area) and the thickness. The ventilation of the tobacco sheet of the present embodiment is preferably 0CORESTA Unit.

2) Thickness of (L)

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 still more preferably 500 μm or less. The lower limit is preferably 20 μm or more, more preferably 100 μm or more, and still more preferably 150 μm or more.

(8) Tobacco segment

Tobacco segments for smoking articles may be manufactured from tobacco sheets. In one embodiment, the tobacco segment includes a cylindrical packaging material, and includes tobacco sheets that are spirally filled in the packaging material (see fig. 3 (a)). In the figure, 20A is a tobacco segment, T is a tobacco sheet, and 22 is a wrapper, typically paper. The tobacco segment is preferably rod-shaped, and may have a length of 15 to 80mm and a diameter of about 5 to 10 mm. The tobacco segment 20A shown in fig. 3 (a) may be cut to have an aspect ratio (length/diameter) of about 0.5 to 1.2 (see fig. 3 (B)).

In another embodiment, the tobacco segment 20A includes a cylindrical wrapping material 22 and a tobacco sheet T folded and packed in the wrapping material. The ridge line generated by the folding is substantially parallel to the longitudinal direction of the segment (see fig. 3 (C)). The tobacco segment 20A is preferably rod-shaped, and may have a length of 15 to 80mm and a diameter of about 5 to 10 mm. In this embodiment, the tobacco sheet T is preferably subjected to surface folding such as pleating or crimping.

In another embodiment, the tobacco segment 20A includes a tubular wrapping 22 and a cut piece of tobacco sheet T filled in the wrapping (see fig. 3D). The tobacco segment 20A is preferably rod-shaped, and may have a length of 15 to 80mm and a diameter of about 5 to 10 mm. The size of the cut piece is not limited, and for example, the length of the longest side may be about 2 to 20mm and the width may be about 0.5 to 1.5 mm.

In another embodiment, the tobacco segment 20A includes a tubular wrapping material 22 and a strand-type tobacco filler filled in the wrapping material (see fig. 3E). The strand cut tobacco is filled in such a manner that the longitudinal direction thereof is substantially parallel to the longitudinal direction of the wrapping material 22. The width of the strand-type tobacco shreds can be set to be about 0.5-1.5 mm.

In another embodiment, the tobacco segment 20A includes a cylindrical wrapper 22 and tobacco filler randomly filled in the wrapper. The cut tobacco is a cut material and is different from the wire harness type cut tobacco.

[ Method of production ]

The tobacco sheet according to the present embodiment can be produced by any method, and is preferably produced by a method including the following steps.

Step 1, at least tobacco powder, binder and medium are kneaded to prepare a mixture.

And step 2, compacting or extruding the mixture from a die head to prepare a wet sheet.

And step3, drying the wet sheet.

The sheet thus molded by applying pressure is referred to as a "pressure-molded sheet", and as described later, the "pressure-molded sheet" includes a "laminated sheet" and an "extruded sheet". The laminated sheet is a sheet obtained by compacting the mixture with a roller for 1 or more times to a target thickness and then drying to a target moisture content. The extruded sheet is a sheet obtained by extruding the mixture from a T die or the like at a target thickness and then drying the extruded sheet to a target moisture content. The combination of calendaring and extrusion may be performed in a press formed sheet. For example, the mixture may be further compressed to form a sheet after extrusion.

(1) Step 1

In this step, tobacco powder, binder and medium are kneaded. Aerosol generators, emulsifiers or fragrances may also be added as desired. The amount of each component may be adjusted so as to achieve the above-described amounts. The medium preferably contains a water-soluble organic solvent having a boiling point lower than 100 ℃ such as water or ethanol as a main component, and more preferably water or ethanol.

The present step may be performed by kneading the components, and is preferably performed by 1) pulverizing the raw materials (for example, single leaves), 2) preparing the wet powder, and 3) kneading.

1) Crushing

The raw material is preferably coarsely pulverized, followed by fine pulverization using a pulverizer (for example, ACM-5 manufactured by Hosokawa Micron Co., ltd.). The particle diameter D90 after the fine pulverization is preferably 20 to 1000. Mu.m. The particle size can be measured by a laser diffraction type particle size analyzer such as a Mastersizer (manufactured by Malvern corporation).

2) Preparation of wet powder

The pulverized tobacco powder is mixed with additives such as a binder, optionally used flavors, and lipids. The mixing is preferably dry mixing, and therefore a stirrer is preferably used as the mixer. Next, a medium such as water and an aerosol generating agent such as glycerin, if necessary, are added to the dry mixture, and mixed with a stirrer to prepare wet powder (wet powder). The amount of the medium in the wet powder may be 20 to 80 mass%, preferably 20 to 40 mass%, and may be appropriately adjusted according to step 2. For example, the amount of the medium may be 20 to 50 mass% in the case of the compression-expansion in step 2, or 20 to 80 mass% in the case of the extrusion. The solid content concentration of the wet powder is preferably 50 to 90 mass%. In a particularly preferred embodiment, a wet powder is used which contains tobacco particles having a D90 of 200 μm or more and a liquid medium containing water (more preferably a liquid medium composed of water) and has a moisture content of 50 mass% or more.

3) Mixing

The wet powder is kneaded using a kneader (for example, DG-1 manufactured by DALTON Co.). The kneading is preferably carried out in whole until the whole medium is completely filled, for example, it is preferable to knead until the color of the mixture becomes uniform when observed with naked eyes.

(2) Step 2

In this step, the mixture (wet powder) is pressed or extruded from a die to prepare a wet sheet. For example, the mixture may be sandwiched between 2 sheets of base film and passed between a pair of rolls using a calender apparatus (e.g., yuri Roll Machine company) until a given thickness (greater than 100 μm) is reached, and subjected to calendaring, resulting in a laminate in which wet sheets are present between 2 sheets of base film. The base film is preferably a non-adhesive film such as a fluorine-based polymer film. The nip of the rolls can be performed a plurality of times. Alternatively, the above mixture (wet powder) may be extruded from a die (preferably a T die) having a predetermined gap to form a wet sheet on a substrate. As the substrate, a known substrate such as a glass plate, a metal plate, or a plastic plate can be used. The extrusion may be performed using a known extruder.

(3) Step 3

In this step, the wet sheet is dried. For example, the laminate may be subjected to the present step as follows. 1) One substrate film was peeled off. 2) The laminate was dried using a through-air dryer. The drying temperature may be room temperature, preferably 50 to 100 ℃, and the drying time may be set to 1 to 2 minutes. 3) Then, the remaining base film was peeled off, and further dried under the above conditions to obtain a tobacco sheet. By drying in this way, the tobacco sheet can be prevented from adhering to other substrates. The tobacco sheet thus obtained is also referred to as a "laminate sheet". The laminated sheet is preferable because the laminated sheet has a smooth surface and can suppress the occurrence of leakage of cut tobacco when it comes into contact with other members. The method is suitable for producing sheets having a thickness of 300 μm or less.

In the case of extrusion molding, the wet sheet on the substrate is air-dried or heated and dried. The drying conditions are as described above. The tobacco sheet thus obtained is also referred to as an "extruded sheet". The extruded sheet is preferable because the surface is smooth and the occurrence of leakage of cut tobacco can be suppressed when the extruded sheet is in contact with other members. The method is suitable for manufacturing sheets with a thickness of 200 μm or more.

[ Mode 2]

As the 2 nd aspect, a tobacco sheet having high bulk and capable of realizing an excellent curve will be described. The tobacco sheet of the present embodiment comprises the above-described tobacco powder, a humectant, a binder, and one or both selected from a flavoring agent and a molding aid, and has a ventilation degree of greater than 0CORESTA Unit.

(1) Humectant type

The humectant in the present embodiment is a material for imparting moisture to a tobacco sheet, and is the aerosol generating agent described above that generates an aerosol by heating and vaporizing and cooling, or generates an aerosol by atomizing. The moisturizer according to the present embodiment includes: polyhydric alcohols such as glycerin or Propylene Glycol (PG); triesters such as triethyl citrate (TEC) or glyceryl triacetate. The humectant of this embodiment preferably has a boiling point of greater than 100 ℃. The amount of the humectant in the tobacco sheet is preferably 1 to 40% by mass, more preferably 10 to 20% by mass, based on the dry mass (the mass excluding the water to be mixed, hereinafter the same). If the amount of the humectant exceeds the upper limit, there is a risk that it is difficult to produce a tobacco sheet, and if the amount is below the lower limit, there is a risk that the smoke feeling is reduced.

(2) Adhesive agent

In this embodiment, the adhesive described in embodiment 1 can be used.

(3) Flavoring agent

The flavoring agent is a material imparting a flavor, preferably a perfume. As the perfume, the above-mentioned perfumes can be used.

(4) Aerosol generating agent

In this embodiment, the tobacco sheet may contain the aerosol-generating agent described in embodiment 1 and which does not belong to the humectant.

(5) Shaping aid

The molding aid in this embodiment includes pulp or nonwoven fabric of plant fibers or synthetic fibers, and more specifically includes fibers derived from tobacco or fibers derived from materials other than tobacco. The addition amount of the molding aid is preferably 0.5 to 2.0 mass% in the sheet. The tobacco sheet according to the present embodiment may contain either one of the flavoring agent and the molding aid, and specifically, in the case of containing the molding aid, the effects such as securing the strength of the sheet and reducing the adhesiveness of the sheet can be exhibited, and in the case of containing the flavoring agent, the flavoring agent or the like can be carried on the molding aid, and therefore, the effects such as improving the carrying force of the flavoring agent or the like of the sheet can be exhibited.

1) Ventilation degree

The ventilation degree of the tobacco sheet according to this embodiment is more than 0CORESTA Unit, preferably 50CORESTA Unit or more, 100CORESTA Unit or more, 200CORESTA Unit or more, 300CORESTA Unit or more, or 400CORESTA Unit or more, more preferably 500CORESTA Unit or more. The upper limit is not limited, but is preferably 20000CORESTA Unit or less, more preferably 15000CORESTA Unit or less. CORESTA Unit refers to the average air flow rate per 1cm ² (cm ³) over 1 minute at a differential pressure of 1 kPa. The ventilation can be measured by using a ventilation meter PPM1000M manufactured by Cerulean corporation. In the present invention, the ventilation is preferably measured according to the following procedure. 1) The sheet was allowed to stand at room temperature of 22℃and a relative humidity of 60% for 48 hours, and then subjected to state adjustment. 2) Then, the sheet was cut into pieces of 40mm×240mm, and the air throughput from the front surface to the back surface was measured using a ventilation measuring device (PPM 1000M manufactured by Cerulean corporation), the differential pressure was set to 1kPa, and the measuring head was set to a circular shape of 2cm ². 3) The measurement environment was set at room temperature (e.g., 22 ℃ C.) and a relative humidity of 60%.

In this embodiment, since a tobacco sheet having a specific ventilation degree is used, an initial curve can be realized. Specifically, compared with the conventional sheet, high conveyance can be achieved in the initial suction, and a curve in which the conveyance amount is not easily reduced in the latter half of the suction can be achieved as in the conventional sheet. The reason for this is not limited, and it is presumed that the reason for this is that the release efficiency of the humectant from the tablet increases due to the high ventilation of the tablet, and thus the amount of aerosol formed by the humectant increases.

2) Thickness of (L)

The thickness of the tobacco sheet according to the present embodiment is not limited, but is preferably 20 to 2000. Mu.m, more preferably 100to 1500. Mu.m, and still more preferably 100to 1000. Mu.m.

3) Density of

The tobacco sheet of the present embodiment preferably has a density of 0.5 to 2.0g/cm ³, more preferably a density of 0.5 to 1.0g/cm ³. As described later, the tobacco sheet of the present embodiment preferably has pores provided by physical or chemical means, and the density is not the density of the portion other than the pore portion, but the density of the entire sheet including the pores. Further, when the tobacco sheet of the present embodiment has a density of 1.0g/cm ³ or less, more sufficient flavor component can be delivered at the initial stage of smoking.

4) Hole(s)

As described above, the tobacco sheet of the present embodiment preferably has holes formed by processing. The holes may be provided by physical or chemical machining. As the former, there may be mentioned: laser machining, cutting machining using a needle or the like, partial discharge electric drilling, and the like. The latter may be etched. The shape of the hole is not limited, and may be a circle, an ellipse, a polygon, or the like, and the hole is preferably a through hole. The size, number, and configuration of the holes may be appropriately adjusted to achieve the desired ventilation. In one embodiment, the diameter of the circumscribed circle is 0.1-0.8 mm for the size of the hole. In one embodiment, the holes are arranged in a lattice shape on the sheet, and the shortest distance between adjacent holes is about 0.2 to 0.8mm.

(6) Tobacco segment

Tobacco segments for smoking articles may be manufactured from tobacco sheets. The tobacco segment in this embodiment is as described in the description of embodiment 1.

[ Method of production ]

The tobacco sheet according to the present embodiment can be produced by any method, and preferably by a method comprising the following steps.

Step 1, at least one or both of tobacco powder, humectant, binder, flavoring agent and molding aid, and medium are kneaded to prepare a mixture.

And step3, drying the wet sheet.

(1) Step 1

In this step, at least one or both of tobacco powder, humectant, binder, flavoring agent and molding aid, and medium are kneaded. Emulsifiers may also be added as desired. The amount of each component may be appropriately adjusted so that the above amounts can be achieved. The medium preferably contains a water-soluble organic solvent having a boiling point lower than 100 ℃ such as water or ethanol as a main component, and more preferably water or ethanol.

1) Crushing

The raw material is preferably coarsely pulverized, followed by fine pulverization using a pulverizer (for example, ACM-5 manufactured by Hosokawa Micron Co., ltd.). Particle diameter D90 of the tobacco powder after the fine pulverization is as described above. The particle size can be measured by a laser diffraction type particle size analyzer such as a Mastersizer (manufactured by Malvern corporation).

2) Preparation of wet powder

Adding tobacco powder, binder, one or both selected from flavoring agent and molding auxiliary agent, and optionally lipid additive, and mixing. The mixing is preferably dry mixing, and therefore a stirrer is preferably used as the mixer. Next, a medium such as water and a humectant are added to the dry mixture, and the mixture is mixed with a stirrer to prepare wet powder (wet powder). The amount of the medium in the wet powder may be 20 to 80 mass%, preferably 20 to 40 mass%, and may be appropriately adjusted according to step 2. For example, the amount of the medium may be 20 to 50 mass% in the case of the compression-expansion in step 2, or 20 to 80 mass% in the case of the extrusion. The solid content concentration of the wet powder is preferably 50 to 90 mass%.

3) Mixing

The wet powder is kneaded using a kneader (for example, DG-1 manufactured by DALTON Co.). The kneading is preferably carried out in whole until the color of the mixture becomes uniform throughout the medium, for example, preferably until the color of the mixture becomes uniform in visual observation.

(2) Step 2

(3) Step 3

The tobacco sheet may be produced by a paper making method, a casting method, a nonwoven fabric coating method, or the like. The papermaking method is a method of producing a sheet by papermaking and drying a mixture containing tobacco powder, a humectant, a binder, one or both selected from a flavoring agent and a molding aid, and water. Among them, since the mixture needs to contain fibrous substances, it is preferable to contain a fibrillated tobacco raw material or pulp as a forming aid. The aqueous extract extracted before the tobacco material is fibrillated may be subsequently concentrated and returned to the papermaking resulting sheet. The sheet produced by this method is referred to as a paper-making sheet.

The casting method is a method of producing a sheet by spreading (casting) a mixture containing any one or both of a tobacco powder, a humectant, a binder, a flavoring agent, and a molding aid on a substrate, and drying the spread product. The mixture may contain a molding aid and a medium such as water, if necessary. The sheet produced by this method is referred to as a casting sheet.

The nonwoven fabric coating method is a method of producing a sheet by coating a nonwoven fabric with a mixture containing tobacco powder, a humectant, a binder, and any one or both of a flavoring agent and a molding aid. The sheet produced by this method is referred to as a nonwoven fabric sheet.

Examples

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

Example 1

Tobacco flakes (tobacco leaves) were dry-pulverized with Hosokawa Micron ACM machine to obtain tobacco powder. The cumulative 50% particle size (D50) and the cumulative 90% particle size (D90) in the particle size distribution based on the volume of the dry laser diffraction method were measured using a Mastersizer (trade name, manufactured by spectra company MALVERN PANALYTICAL, inc.), and the results were 57 μm and 216 μm, respectively.

Using the above tobacco powder, a tobacco sheet was produced by a rolling method. Specifically, 87 parts by mass of the tobacco powder, 12 parts by mass of glycerin as an aerosol generating agent, and 1 part by mass of carboxymethyl cellulose as a molding agent were mixed and kneaded by an extrusion molding machine. The kneaded material was formed into a sheet by using 2 pairs of metal rolls, and dried in a heated air circulation oven at 80 ℃. The tobacco sheet was cut into dimensions of 0.8mm by 9.5mm using a chopper.

For cut tobacco sheets, the fluffiness was measured. Specifically, the cut tobacco sheet was left in a 60% room at 22℃for 48 hours, and then measured for fluffiness using DD-60A (trade name, manufactured by Borgward Co.). The cut tobacco sheet 15g was placed in a cylindrical container having an inner diameter of 60mm, and the volume at 30 seconds of compression was determined under a load of 3kg, and the measurement was performed. The results are shown in Table 1. In table 1, the bulk is expressed as a rate (%) of increase in bulk with respect to a reference value, based on the value of bulk of comparative example 1 described below.

Example 2

Tobacco sheets were produced and evaluated in the same manner as in example 1, except that tobacco powders having a cumulative 50% particle diameter (D50) and a cumulative 90% particle diameter (D90) of 121 μm and 389 μm, respectively, in a volume-based particle diameter distribution by a dry laser diffraction method were used as the tobacco powders. The results are shown in Table 1.

Example 3

Tobacco sheets were produced and evaluated in the same manner as in example 1, except that tobacco powders having a cumulative 50% particle diameter (D50) and a cumulative 90% particle diameter (D90) of 225 μm and 623 μm, respectively, in a volume-based particle diameter distribution by a dry laser diffraction method were used as the tobacco powders. The results are shown in Table 1.

Comparative example 1

Tobacco sheets were produced and evaluated in the same manner as in example 1, except that tobacco powders having a cumulative 50% particle diameter (D50) and a cumulative 90% particle diameter (D90) of 32 μm and 84 μm, respectively, in a volume-based particle diameter distribution by a dry laser diffraction method were used as the tobacco powders. The results are shown in Table 1.

TABLE 1

According to table 1, the tobacco sheets of examples 1 to 3 of the tobacco sheet of the present embodiment have improved bulk as compared with the tobacco sheet of comparative example 1 in which the D90 of the tobacco powder measured by the dry laser diffraction method is less than 200 μm. In examples 1 to 3, tobacco sheets were produced by a rolling method, but when tobacco sheets were produced by a casting method in the same manner, the bulk was also improved.

Hereinafter, the 1 st embodiment will be described with reference to reference example a and reference comparative example a.

Reference example A1

Tobacco leaves were pulverized using a pulverizer (ACM-5 manufactured by Hosokawa Micron Co.) so that D90 was 400. Mu.m, to obtain tobacco particles. D90 was measured by Mastersizer (manufactured by Malvern). Tobacco particles and Sunrose F HC (cellulose ether manufactured by japan paper co.) as a binder were dry-mixed using a stirrer. Next, glycerin as an aerosol generator and water as a medium were added to the dry mixture, and mixed with a stirrer to prepare wet powder. The blending of the components is shown in Table A1.

The wet powder was kneaded 6 times at room temperature using a kneader (DG-1, manufactured by DALTON Co.) to obtain a mixture. The die shape was rounded square (square ), and the screw speed was 60rpm.

The wet powder was sandwiched between 2 sheets of Teflon (registered trademark) film (NITOFLON (R) No.900UL, manufactured by Nito electric Co., ltd.) and subjected to 4-stage rolling using a calender device (manufactured by Yuri Roll Machine Co.) until a given thickness (more than 100 μm) was reached, and a laminate having a layer structure of film/wet sheet/film and a thickness of 250 μm was produced. The roller gaps of stages 1 to 4 were 1100 μm, 500 μm, 300 μm, and 200 μm, respectively. The roll gap of stage 4 is thicker than the thickness of the resulting sheet, since the sheet released from the pressure between the rolls expands to around the final thickness.

1 Piece of Teflon (registered trademark) film was peeled off from the laminate and dried at 80℃for 1 to 2 minutes using a through-air dryer. Next, another 1 film was peeled off, and the wet sheet was dried under the same conditions to produce a tobacco sheet according to the present embodiment, which was evaluated.

[ Table A1]

Table A1 reference example A1

* WB wet substrate

DB dry base Material

The mass of the wet powder in table A1 represents the dry mass of the tobacco crushed material, glycerin, and binder, and the water represents the total of the input mass and the mass of the moisture contained in the tobacco crushed material, glycerin, and binder.

Reference examples A2 and A3

Tobacco sheets were produced and evaluated in the same manner as in reference example A1, except that tobacco particles having D90 of 600 μm and 800 μm were used, respectively.

Reference examples A1 and A2

Tobacco sheets were produced and evaluated in the same manner as in reference example A1, except that tobacco particles having D90 of 80 μm and 200 μm were used, respectively.

Reference example A4

Tobacco sheets were produced and evaluated in the same manner as in reference example A1, except that tobacco particles having a D90 of 200 μm were used, and the mass ratio of water in the wet powder was 50 WB.

Reference examples A3 and A4

Tobacco sheets were produced and evaluated in the same manner as in reference example A1, except that tobacco particles having a D90 of 200 μm were used, and the mass ratio of water in the wet powder was set to 30% by mass and 40% by mass, respectively. These results are shown in Table A3. The "amount of water in wet powder" in table A3 corresponds to the amount of water in the mass ratio in wet powder of table A1.

Reference example A5 and reference comparative example A5

Tobacco sheets having a sheet density of 0.75g/cm ³ and 0.96g/cm ³ (reference example A5) and tobacco sheets having a sheet density of 1.19g/cm ³ (reference comparative example A5) were produced by a casting method, respectively, according to a conventional method. 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 was excellent in the delivery of flavor components at the initial stage of smoking, as compared with the smoking article using the sheet of reference example A5. From this, it is assumed that the tobacco sheets obtained in reference examples A1 to A3 were used to deliver good flavor components at the initial stage of smoking.

The evaluation method will be described below.

Smoking test

A non-combustion heating type smoking system shown in fig. 2 was prepared. Wherein an internally heated smoking system is used in this example. Next, a Cambridge filter is attached to the suction end. Cut tobacco pieces prepared in each example were cut to prepare cut tobacco. The tobacco rod was filled at 70% by volume into a wrapper 22 of length 12mm and diameter 7mm to prepare a tobacco segment 20A. The system was subjected to a smoking test using a smoking machine. Specifically, automatic smoking was performed using an automatic smoker (R-26 manufactured by Borgwaldt KC Co.) at a smoking capacity of 27.5 ml/sec, a smoking time of 2 seconds/puff, a smoking frequency of 2 puffs/minute, and a smoking of 14 times, and particulate matter in each 1-time smoked tobacco smoke was collected by a Cambridge filter (CM-133 manufactured by Borgwaldt KC Co.). The Cambridge filter after the smoking test was shaken in 10mL of methanol (manufactured by Wako pure chemical industries, ltd., special reagent grade) to obtain an analysis sample. 1. Mu.L of the analysis sample obtained by the microinjection was analyzed by a gas chromatography-mass spectrometer (GC-MSD, GC:7890A, MS:5975C, manufactured by Agilent corporation).

[ Density ]

The tobacco sheet was cut into 55mm square pieces, the mass (dry matter mass) was measured, and the average mass per unit area (weight per unit area) was calculated. Further, the thickness was measured by a thickness meter (manufactured by Mitutoyo corporation), and the density was calculated from the weight per unit area and the thickness.

Reference example A5-1

The above reference example A5 was reproduced. Namely, tobacco sheets were produced as follows.

1) The tobacco flakes were pulverized by a laboratory mill to obtain tobacco particles having a raw material particle size d90=300 μm.

2) Conifer pulp was broken up using a laboratory mill.

3) These powdery materials were put into a Ken mixer and stirred and mixed.

4) Water, glycerin, sunrose F MC (cellulose ether manufactured by japan paper corporation) as a binder were added to a disperser (manufactured by Primix corporation) and mixed for 30 minutes.

5) To this mixture, the pulp was added and dispersed for 30 minutes by a disperser (Primix).

6) Casting the mixture obtained in the above 5) on an iron plate.

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

[ Table A2]

Table A2 reference example A5-1

The mass of the wet powder in table A2 represents the dry mass of the tobacco crushed material, glycerin, and binder, and the water represents the total of the input mass and the mass of the moisture contained in the tobacco crushed material, glycerin, and binder.

Reference example A6

Tobacco sheets were produced and evaluated in the same manner as in reference example A5-1, except that tobacco particles having a D90 of 80 μm were used. The results are shown in Table A3.

[ Table A3]

Table A3 physical properties of the tablets

Hereinafter, the 2 nd aspect will be described with reference to reference example B and reference comparative example B.

Reference example B1

Tobacco leaves were pulverized to a D90 of 70 μm using a pulverizer (ACM-5 manufactured by Hosokawa Micron Co., ltd.) to obtain tobacco particles. D90 was measured by Mastersizer (manufactured by Malvern). Tobacco particles and carboxymethyl cellulose (trade name Sunrose F MC, manufactured by Japanese paper Co., ltd.) as a binder were dry-mixed using a stirrer. Subsequently, glycerin as a humectant and water as a medium were added to the dry mixture, and mixed with a stirrer to prepare wet powder. The blending of the components is shown in Table B1.

The wet powder was kneaded 6 times at room temperature using a kneader (DG-1, manufactured by DALTON Co.) to obtain a mixture. The T die was used as the die, and the screw speed was set at 38.5rpm.

The wet powder was sandwiched between 2 sheets of Teflon (registered trademark) film (NITOFLON (R) No.900UL, manufactured by Nito electric Co., ltd.) and subjected to 4-stage rolling using a calender device (manufactured by Yuri Roll Machine Co.) until a given thickness (more than 100 μm) was reached, and a laminate having a layer structure of film/wet sheet/film and a thickness of 105 μm was produced. The roller gaps of stages 1 to 4 were 650. Mu.m, 330. Mu.m, 180. Mu.m, and 5. Mu.m, respectively. The roll gap of stage 4 is thicker than the thickness of the resulting sheet, since the sheet released from the pressure between the rolls expands to around the final thickness.

1 Piece of Teflon (registered trademark) film was peeled off from the laminate and dried at 80℃for 1 to 2 minutes using a through-air dryer. Next, another 1 film was peeled off, and the wet sheet was dried under the same conditions, to produce a tobacco sheet of the present embodiment.

The thus obtained sheet was allowed to stand at room temperature of 22℃and a relative humidity of 60% for 48 hours. Then, a plurality of hole portions having hole sizes of 0.2mm×0.2mm were formed in the sheet by using a laser processing apparatus (manufactured by TROTEC). The opening intervals were set to 0.4mm equal intervals. The detailed conditions are shown in table B2. The thus obtained processed tobacco sheet was evaluated for ventilation and release profile by the methods described below. The results are shown in Table B2 and FIG. 4. The vertical axis of figure 4 represents the amount of nicotine normalized to the average amount of nicotine per 1 flavored smoking article. That is, when the amount of nicotine detected 1 time by suction is x (g) and the average amount of nicotine per one unit (total amount of nicotine sucked 1 to 14 times) is y (g), the value of x/y is plotted on the vertical axis.

< Ventilation degree >)

The perforated sheet was allowed to stand at room temperature of 22℃and a relative humidity of 60% for 48 hours. Next, the sheet was cut into pieces of 40mm by 240mm, and the air permeability was measured using an air permeability measuring device (PPM 1000M manufactured by Cerulean corporation) under a differential pressure of 1kPa and a measuring head of round 2cm ². The measurement environment was set at room temperature of 22℃and relative humidity of 60%. The ventilation was calculated as the air flow rate (cm ³) per 1cm ² on average in 1 minute under a differential pressure of 1 kPa.

< Ingredient release Curve >)

1) The perforated sheet was allowed to stand at room temperature of 22℃and a relative humidity of 60% for 48 hours.

2) The sheet density was calculated by measuring the thickness and the weight per unit area.

3) The pieces were cut to a size of 55mm by 0.8 mm.

4) The cut sheet was filled with sheath paper (sheath) of Φ7.1 so as to achieve a predetermined volume filling ratio, and cut into a length of 12 mm.

5) A smoking test roll (flavor smoking article) was manufactured by connecting a 12mm length smoking section (tobacco section), a filter, and a paper tube.

6) A non-combustion heating type smoking system shown in fig. 2 was prepared. Wherein an internally heated smoking system is used in this example. Next, a Cambridge filter is attached to the suction end. Cut the pieces prepared in each example to prepare cut tobacco. The tobacco rod was filled at 70% by volume into a wrapper 22 of length 12mm and diameter 7mm to prepare a tobacco segment 20A. The system was subjected to a smoking test using a smoking machine. Specifically, automatic smoking was performed using an automatic smoker (R-26 manufactured by Borgwaldt KC Co.) at a smoking capacity of 27.5 ml/sec, a smoking time of 2 seconds/puff, a smoking frequency of 2 puffs/minute, and a smoking of 14 times, and particulate matter in each 1-time smoked tobacco smoke was collected by a Cambridge filter (CM-133 manufactured by Borgwaldt KC Co.). The Cambridge filter after the smoking test was shaken in 10mL of methanol (manufactured by Wako pure chemical industries, ltd., special reagent grade) to obtain an analysis sample. 1. Mu.L of the analysis sample obtained by the microinjection was analyzed by a gas chromatography-mass spectrometer (GC-MSD, GC:7890A, MS:5975C, manufactured by Agilent corporation).

[ Table B1]

Table B1 fitting

	DB mass%	WB mass%
			Tobacco leaf crushed material	85	60
Adhesive agent	3	2
			Glycerol	12	8
Other additives	0	0
			Moisture content	-	30

DB: dry substrate

WB: wet substrate

Reference examples B2 to B4 and reference comparative example B1

By changing the laser processing conditions, sheets having ventilation as shown in table B2 were prepared. A smoking test roll was prepared and evaluated in the same manner as in reference example B1, except that each sheet was used and the filling ratio was changed. The results are shown in FIG. 4.

[ Table B2]

As shown in the figure, the smoking article using the sheet of the present embodiment can achieve an excellent profile in which the transport height of the initial puff is high and the transport equivalent to that of the conventional sheet can be ensured even in the latter half.

Hereinafter, embodiments are shown.

[1] A tobacco sheet for a non-combustion heating type flavor inhaler, comprising a tobacco powder having a cumulative 90% particle diameter (D90) of 200 [ mu ] m or more in a volume-based particle size distribution measured by a dry laser diffraction method.

[2] The tobacco sheet for a non-combustion heating type flavor inhaler according to item [1], wherein the tobacco powder is at least one tobacco material selected from the group consisting of tobacco leaves, veins and residual stems.

[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 mass% of the tobacco sheet is 45 to 95 mass%.

[4] The tobacco sheet for a non-combustion heating type flavor inhaler according to any one of [1] to [3], wherein the tobacco sheet further comprises an aerosol generator.

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

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

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

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

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

[11] A non-combustion heated flavor pumping system, comprising:

[10] the non-combustion heating type flavor aspirator and

And a heating device for heating the tobacco-containing section.

(1) A tobacco sheet has a density of 1.0g/cm ³ or less.

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

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

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

(5) The sheet according to (4), which comprises tobacco particles having a D90 of 500 μm or more.

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

(7) The method for producing a tobacco sheet according to any one of (1) to (5), comprising:

Step 1, at least mixing tobacco particles, a binder and a medium to prepare a mixture;

Step 2, compacting or extruding the mixture from a die head to prepare a wet sheet; and

And step3, drying the wet sheet.

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

(9) The production method according to (7) or (8), wherein the step2 comprises: laminates were prepared with wet sheets between 2 substrate films.

(10) The production method according to any one of (7) to (9), wherein the step 1 comprises: at least the tobacco material, binder and medium are kneaded with a single-or multi-shaft kneader.

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

<1 > A sheet of a smoking composition, namely a tobacco sheet, comprising:

A humectant(s),

Adhesive, and

Either or both of the flavoring agent or the shaping aid,

The ventilation degree of the tobacco sheet is greater than 0CORESTA Unit.

The sheet according to < 2 > and < 1 >, wherein the air permeability is 500CORESTA Unit or more.

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

The sheet according to any one of < 1> - < 3 >, wherein the humectant is a polyhydric alcohol.

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

The sheet according to any one of < 1 > - < 5 >, wherein the molding aid is a pulp or nonwoven fabric of vegetable fibers or synthetic fibers.

A sheet according to any one of < 1> - < 6 > which is a pressure-formed sheet.

< 8 > The sheet according to any one of < 1 > - < 6 >, which has a plurality of holes provided by physical processing.

< 9 > The sheet according to any one of < 1 > - < 7 >, which has a plurality of holes provided by chemical processing.

Claims

1. A tobacco sheet for a non-combustion heating type flavor inhaler, comprising a tobacco powder having a cumulative 90% particle diameter (D90) of 200 [ mu ] m or more in a volume-based particle size distribution measured by a dry laser diffraction method.

2. The sheet of claim 1 having a density of 1.0g/cm ³ or less.

3. A sheet according to claim 1 or 2, which is a compression molded sheet.

4. A sheet according to any one of claims 1 to 3, further comprising:

A humectant(s),

Adhesive, and

Either or both of the flavoring agent or the shaping aid,

The sheet has a ventilation of greater than 0CORESTA Unit.

5. The sheet according to claim 4, wherein,

The ventilation degree is more than 500CORESTA Unit.

6. A non-combustion heating type flavor aspirator comprising a tobacco-containing segment including the non-combustion heating type flavor aspirator tobacco sheet according to any one of claims 1 to 5.

7. A non-combustion heated flavor pumping system, comprising:

The non-combustion heating type flavor aspirator of claim 6, and

Heating means for heating said tobacco-containing segment.