WO2023053704A1 - Tobacco sheet for non-combustion heating flavor inhaler, non-combustion heating flavor inhaler, and non-combustion heating flavor inhalation system - Google Patents

Abstract

Provided is a tobacco sheet for a non-combustion heating flavor inhaler, the tobacco sheet including a fibrous material.

Description

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

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

A combustion-type flavor inhaler (cigarette) obtains flavor by burning tobacco fillings including leaf tobacco and tobacco sheets. For example, Patent Literature 1 discloses a tobacco sheet used in a combustion type flavor inhaler. As an alternative to the combustion type flavor inhaler, a non-combustion heating type flavor inhaler has been proposed that obtains flavor by heating a flavor source such as a tobacco sheet instead of burning it. The heating temperature of the non-combustion-heating flavor inhaler is lower than the combustion temperature of the combustion-type flavor inhaler, for example, about 400° C. or less. Thus, since the heating temperature of the non-combustion heating type flavor inhaler is low, an aerosol generating agent 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-generating agent is vaporized by heating to generate an aerosol. Since the aerosol is supplied to the user together with flavor components such as tobacco components, the user can obtain sufficient flavor.

A non-combustion heating flavor inhaler can comprise, for example, a tobacco-containing segment filled with tobacco sheets or the like, a cooling segment, and a filter segment. The axial length of the tobacco-containing segment of the non-combustion-heating flavor inhaler is generally shorter than the axial length of the tobacco-containing segment of the normal 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 are filled in the short tobacco-containing segments in order to secure the amount of aerosol generated during heating. In order to fill a large amount of tobacco sheets in a short section, non-combustion heating type flavor inhalers usually use tobacco sheets with low swelling, that is, high density tobacco sheets. In addition, the swelling property is a value indicating the volume of a tobacco sheet having a predetermined mass when notches are compressed under a constant pressure for a certain period of time. For example, Patent Literature 2 discloses a tobacco sheet used in a non-combustion heating type flavor inhaler.

Japanese Patent Publication No. 60-45914 Patent No. 5969923

However, considering the heating method, the heating capacity of the heater, and the generation of aerosol, the present inventors believe that if a tobacco sheet with low swelling (high density) is used, the total heat capacity of the tobacco-containing segment increases. It was found that the tobacco sheet filled in the tobacco-containing segment does not sufficiently contribute to the generation of aerosol depending on the heating method and the capacity of the heater. In order to solve this problem, it is conceivable 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 (1) reduce the specific heat of the tobacco raw material contained in the tobacco sheet, and (2) use a highly bulky (low-density) tobacco sheet. I considered using it. However, as for (1), it is difficult to reduce the specific heat of the tobacco raw material itself, so it was considered effective to reduce the total heat capacity of the tobacco-containing segment by (2). Therefore, it is desired to develop a highly bulky (low density) tobacco sheet suitable for non-combustion heating type flavor inhalers.

An object of the present invention is to provide a highly bulky non-combustion heating flavor inhaler tobacco sheet, a non-combustion heating flavor inhaler including the tobacco sheet, and a non-combustion heating flavor inhalation system.

The present invention includes the following embodiments.
Aspect 1
A tobacco sheet for a non-combustion heated flavor inhaler comprising a fibrous material.
Aspect 2
The sheet according to aspect 1, wherein at least one surface has an arithmetic mean surface roughness Sa of 5 to 30 μm.
Aspect 3
3. The sheet of aspect 1 or 2, which is a pressure-formed sheet.
Aspect 4
The sheet according to any one of aspects 1 to 3, comprising a cellulose derivative having a degree of substitution of 0.65 or more.
Aspect 5
The sheet according to aspect 4, wherein the degree of substitution is 0.7 or more.
Aspect 6
A tobacco-containing segment comprising the tobacco sheet for a non-combustion heating type flavor inhaler according to any one of aspects 1 to 5,
A non-combustion heated flavor inhaler comprising:
Aspect 7
A non-combustion heated flavor inhaler according to aspect 6;
a heating device for heating the tobacco-containing segment;
A non-combustion heated flavor suction system.

According to the present invention, it is possible to provide a highly bulky non-combustion heating flavor inhaler tobacco sheet, a non-combustion heating flavor inhaler including the tobacco sheet, and a non-combustion heating flavor inhalation system.

It is a sectional view showing an example of a non-combustion heating type flavor inhaler concerning this embodiment. An example of the non-combustion heating flavor inhalation system according to the present embodiment, in which (a) the state before the non-combustion heating flavor inhaler is inserted into the heating device, and (b) the non-combustion heating flavor inhaler is heated. It is sectional drawing which shows the state which inserts into an apparatus and heats. 1 is a diagram showing one aspect of a tobacco segment; FIG.

[Tobacco sheet for non-combustion heating type flavor inhaler]
A tobacco sheet for a non-combustion heating type flavor inhaler (hereinafter also referred to as "tobacco sheet") according to this embodiment includes a fibrous material. Since the tobacco sheet according to this embodiment contains a fibrous material, it is bulky and has a high swelling property. Therefore, by using the tobacco sheet according to the present embodiment, the total heat capacity of the tobacco-containing segment can be reduced, and the tobacco sheet filled in the tobacco-containing segment can sufficiently contribute to aerosol generation. In addition, the tobacco sheet according to the present embodiment preferably further contains a tobacco raw material, an aerosol-generating agent, and a molding agent. By setting the mixing ratio of these ingredients within a predetermined range, the swelling property of the tobacco sheet is further improved. .

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

The ratio of the fibrous material contained in 100% by mass of the tobacco sheet is preferably 5-50% by mass. By setting the ratio of the fibrous material to 5% by mass or more, a bulkiness that can ensure the function can be realized. Further, since the proportion of the fibrous material is 50% by mass or less, sufficient tobacco aroma and aerosol can be generated during heating. The proportion of the fibrous material is more preferably 5 to 47% by mass, even more preferably 5 to 45% by mass, and particularly preferably 5 to 40% by mass.

(tobacco raw material)
When the fibrous material is other than fibrous tobacco material, the tobacco sheet according to the present embodiment may further contain tobacco raw material. The tobacco raw material is not particularly limited as long as it contains tobacco components, and examples thereof include tobacco powder and tobacco extract. Tobacco powder includes, for example, leaf tobacco, core bones, residual stems, and the like. These may be used alone or in combination of two or more. By chopping these into a predetermined size, they can be used as tobacco powder. Regarding the size of the tobacco powder, it is preferable that the cumulative 90% particle size (D90) in the volume-based particle size distribution measured by the dry laser diffraction method is 200 μm or more from the viewpoint of further improving the swelling property. As the tobacco extract, for example, leaf tobacco is crushed, mixed and stirred with a solvent such as water to extract a water-soluble component from the leaf tobacco, and the resulting water extract is dried under reduced pressure and concentrated. Tobacco extracts obtained may be mentioned.

The ratio of the tobacco raw material contained in 100% by mass of the tobacco sheet is preferably 30 to 91% by mass. When the ratio of the tobacco raw material is 30% by mass or more, a sufficient tobacco aroma can be generated during heating. Further, by setting the ratio of the tobacco raw material to 91% by mass or less, a sufficient amount of an aerosol-generating agent and a molding agent can be included. The proportion of the tobacco raw material is more preferably 50 to 90% by mass, even more preferably 55 to 85% by mass, and particularly preferably 60 to 80% by mass.

(molding agent)
When the fibrous material is other than a fibrous molding agent such as fibrous synthetic cellulose, the tobacco sheet according to the present embodiment preferably further contains a molding agent from the viewpoint of securing the shape. Molding agents include, for example, polysaccharides, proteins, synthetic polymers and the like. These may be used alone or in combination of two or more. Examples of polysaccharides include cellulose derivatives and naturally occurring polysaccharides.

Cellulose derivatives include, for example, cellulose ethers such as methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxymethylethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, benzylcellulose, tritylcellulose, cyanoethylcellulose, carboxymethylcellulose, carboxyethylcellulose, aminoethylcellulose; Organic acid esters such as cellulose, cellulose formate, cellulose propionate, cellulose butyrate, cellulose benzoate, cellulose phthalate, and tosyl cellulose; and inorganic acid esters such as cellulose nitrate, cellulose sulfate, cellulose phosphate, and cellulose xanthate. be done.

Examples of naturally-derived polysaccharides include guar gum, tara gum, roasted bean gum, tamarind seed gum, pectin, arabic gum, tragacanth gum, karaya gum, gutti gum, arabinogalactan, amaseed gum, cascha gum, psyllium seed gum, and mugwort seed gum. plant-derived polysaccharides; carrageenan, agar, alginic acid, propylene glycol alginate, furcelleran, algae-derived polysaccharides such as fukuronori extract; xanthan gum, gellan gum, curdlan, pullulan, Agrobacterium succinoglycan, welan gum, macro Microorganism-derived polysaccharides such as homopsis gum and rhamzan gum; crustacean-derived polysaccharides such as chitin, chitosan, and glucosamine; and starches such as starch, sodium starch glycolate, pregelatinized starch, and dextrin.

Examples of proteins include grain proteins such as wheat gluten and rye gluten. Synthetic polymers include, for example, polyphosphoric acid, sodium polyacrylate, polyvinylpyrrolidone, and the like.

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 raw material mixture can be easily molded into a sheet. Further, since the ratio of the molding agent is 15% by mass or less, it is possible to sufficiently use other raw materials for ensuring the functions required for the tobacco-containing segment of the non-combustion heating type flavor inhaler. The ratio of the molding agent is more preferably 0.2 to 13% by mass, still more preferably 0.5 to 12% by mass, and particularly preferably 1 to 10% by mass.

(Aerosol generating agent)
From the viewpoint of increasing the amount of smoke when heated, the tobacco sheet according to this embodiment preferably further contains an aerosol-generating agent. Aerosol-generating agents include, for example, glycerin, propylene glycol, 1,3-butanediol and the like. These may be used alone or in combination of two or more.

When the tobacco sheet contains an aerosol-generating agent, the ratio of the aerosol-generating agent contained in 100% by mass of the tobacco sheet is preferably 5 to 50% by mass. When the proportion of the aerosol generating agent is 5% by mass or more, sufficient aerosol can be generated during heating from the viewpoint of quantity. In addition, since the proportion of the aerosol generating agent is 50% by mass or less, sufficient aerosol can be generated during heating from the viewpoint of heat capacity. The proportion of the aerosol generating agent is more preferably 6 to 45% by mass, even more preferably 8 to 40% by mass, and particularly preferably 10 to 30% by mass.

(Reinforcing agent)
When the fibrous material is other than a fibrous reinforcing agent such as fibrous pulp, the tobacco sheet according to the present embodiment may further contain a reinforcing agent from the viewpoint of further improving physical properties. Examples of the reinforcing agent include liquid substances such as pulp and pectin suspension having a surface coating function that forms a film when dried. These may be used alone or in combination of two or more.

When the tobacco sheet contains a reinforcing agent, the ratio of the reinforcing agent contained in 100% by mass of the tobacco sheet is preferably 0.1 to 20% by mass. When the proportion of the reinforcing agent is within this range, 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 ratio of the reinforcing agent is more preferably 0.2 to 18% by mass, more preferably 0.5 to 15% by mass.

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

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

(other ingredients)
In addition to the fibrous material, the tobacco raw material, the molding agent, the aerosol generating agent, the reinforcing agent, and the moisturizing agent, the tobacco sheet according to the present embodiment may contain a flavoring agent such as a fragrance and a flavoring agent, if necessary. Colorants, wetting agents, preservatives, diluents such as inorganic substances, and the like may be included.

(Bulkiness)
It is preferable that the tobacco sheet according to the present embodiment has a swelling property of 190 cc/100 g or more. When the swelling 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 is generated by aerosol generation. be able to contribute. The swelling property is more preferably 210 cc/100 g or more, more preferably 230 cc/100 g or more. Although the upper limit of the swelling range is not particularly limited, it can be, for example, 800 cc/100 g or less. The swelling property was measured by cutting a tobacco sheet into a size of 0.8 mm x 9.5 mm, leaving it in a conditioned room at 22°C and 60% for 48 hours, and measuring DD-60A (trade name, manufactured by Borgwald). ) is the value measured by The measurement is carried out by placing 15 g of cut tobacco sheets in a cylindrical container with an inner diameter of 60 mm and compressing the container with a load of 3 kg for 30 seconds to obtain the volume.

(Structure of cigarette sheet)
In the present embodiment, the "tobacco sheet" is formed by molding the constituents of the tobacco sheet into a sheet shape. Here, "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 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 terms of heat transfer efficiency and strength.

(Manufacturing method of tobacco sheet)
The tobacco sheet according to this embodiment can be produced by a known method such as a rolling method or a casting method. Various tobacco sheets manufactured by such a method are disclosed in detail in "Encyclopedia of Tobacco, Tobacco Research Center, March 31, 2009".

<Rolling method>
Examples of methods for producing tobacco sheets by rolling include methods including the following steps.
(1) A step of mixing water, tobacco powder, an aerosol-generating agent, a molding agent, and fibrous pulp to obtain a mixture.
(2) A step of rolling the mixture by putting it into rolling rollers.
(3) A step of peeling off the rolled product on the rolling roller with a doctor knife, transferring it to a net conveyor, and drying it with a dryer.
When a tobacco sheet is produced by this method, the surface of each rolling roller may be heated or cooled, and the number of revolutions of each rolling roller may be adjusted, depending on the purpose. Further, by adjusting the distance between the rolling rollers, it is possible to obtain a tobacco sheet having a desired basis weight.

<Cast method>
Examples of methods for producing tobacco sheets by casting include methods including the following steps.
(1) A step of mixing water, tobacco powder, an aerosol-generating agent, a molding agent, and fibrous pulp to obtain a mixture.
(2) A step of thinly spreading (casting) the mixture and drying to form a tobacco sheet.
When a tobacco sheet is produced by this method, a slurry obtained by mixing water, tobacco powder, an aerosol generating agent, a molding agent, and fibrous pulp is irradiated with ultraviolet rays or X-rays to remove some components such as nitrosamines. may be added.

[Non-combustion heating flavor inhaler]
The non-combustion heating flavor inhaler according to this embodiment comprises a tobacco-containing segment including the tobacco sheet according to this embodiment. Since the non-combustion heating type flavor inhaler according to the present embodiment includes the tobacco-containing segment filled with the highly bulky tobacco sheet according to the present embodiment, the total heat capacity of the tobacco-containing segment can be sufficiently reduced. This allows the tobacco sheets loaded into the tobacco-containing segments to contribute more to aerosol generation.

An example of the non-combustion heating type flavor inhaler according to this embodiment is shown in FIG. The non-combustion heating type flavor inhaler 1 shown in FIG. 4 and a filter segment 5 . The non-combustion-heating flavor inhaler according to this embodiment may have segments other than the tobacco-containing segment, cooling segment, center hole segment, and filter segment.

The axial length of the non-combustion heating type flavor inhaler 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, 50 mm or more, It is more preferably 60 mm or less. The circumference of the non-combustion heating flavor inhaler 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 length of the tobacco-containing segment is 20 mm, the length of the cooling segment is 20 mm, the length of the center hole segment is 8 mm, and the length of the filter segment is 7 mm. In addition, the length of the filter segment can be selected within a range of 4 mm or more and 10 mm or less. Also, the ventilation resistance of the filter segments at that time is selected to be 15 mmH ₂ O/seg or more and 60 mmH ₂ O/seg or less per segment. These individual segment lengths can be changed as appropriate according to manufacturability, required quality, and the like. Furthermore, even if only the filter segment is arranged on the downstream side of the cooling segment without using the center hole segment, it can be made to function as a non-combustion heating type flavor inhaler.

(segment containing tobacco)
In the tobacco-containing segment 2, the tobacco sheet according to the present embodiment is filled in wrapping paper (hereinafter also referred to as "wrapper"). The method of packing the tobacco sheet into the wrapping paper is not particularly limited. For example, the tobacco sheet may be wrapped in a wrapper, or the tobacco sheet may be packed in a cylindrical wrapper. When the shape of the tobacco sheet has a longitudinal direction such as a rectangular shape, the tobacco sheet may be filled in the wrapper such that the longitudinal direction is in an unspecified direction, and the tobacco-containing segment 2 may be packed in an axial direction or a longitudinal direction. They may be aligned and filled in a direction perpendicular to the axial direction.

(cooling segment)
As shown in FIG. 1, the cooling segment 3 may be configured by a cylindrical member 7. As shown in FIG. The tubular member 7 may be, for example, a paper tube formed by processing cardboard into a cylindrical shape.

The tubular 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 the perforations 8 outside air is introduced into the cooling segment 3 during suction. As a result, the vaporized aerosol component generated by heating the tobacco-containing segment 2 comes into contact with the outside air, and its temperature decreases, liquefying to form an aerosol. The diameter (spanning length) of the perforations 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, multiple perforations 8 may be provided on the circumference of the cooling segment 3 .

The amount of outside air introduced through the perforations 8 is preferably 85% by volume or less, more preferably 80% by volume or less, relative to the total volume of the gas inhaled by the user. When the ratio of the amount of outside air is 85% by volume or less, it is possible to sufficiently suppress reduction in flavor due to dilution by outside air. In other words, this is also called a ventilation ratio. From the viewpoint of cooling performance, the lower limit of the ventilation ratio range is preferably 55% by volume or more, more preferably 60% by volume or more.

The cooling segment may also be a segment comprising a crumpled, pleated, gathered or folded sheet of suitable construction material. The cross-sectional profile of such elements may exhibit randomly oriented channels. The cooling segment may also include a bundle of longitudinally extending tubes. Such cooling segments may be formed, for example, from pleated, gathered, or folded sheet material wrapped with wrapping paper.

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

(center hole segment)
The center hole segment is composed of a filling layer having one or more hollow portions and an inner plug wrapper (inner wrapping paper) covering the filling layer. For example, as shown in FIG. 1, the center hole segment 4 is composed of a second filling layer 9 having 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 filling layer 9 is filled with, for example, cellulose acetate fibers at a 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 to have an inner diameter of φ1.0 mm. As described above, a rod having a diameter of 5.0 mm or less can be obtained. Since the second packed layer 9 has a high packing density of fibers, air and aerosol flow only in the hollow portion and hardly flow in the second packed layer 9 during suction. Since the second filling layer 9 inside the center hole segment 4 is a fiber filling layer, the feeling of touch from the outside during use hardly causes the user to feel uncomfortable. Note that the center hole segment 4 may not have the second inner plug wrapper 10 and may retain its shape by thermoforming.

(filter segment)
Although the configuration of the filter segment 5 is not particularly limited, it may be composed of a single or a plurality of packed layers. The outer side of the packing layer may be wrapped with one or more wrapping papers. The per-segment ventilation resistance of the filter segments 5 can be appropriately changed depending on the amount of filler, the material, and the like with which the filter segments 5 are filled. For example, when the filling material is cellulose acetate fiber, the ventilation resistance can be increased by increasing the amount of cellulose acetate fiber with which the filter segment 5 is filled. When the filler is cellulose acetate fiber, the packing density of the cellulose acetate fiber can be 0.13-0.18 g/cm ³ . The airflow resistance is a value measured by an airflow resistance measuring instrument (trade name: SODIMAX, manufactured by SODIM).

Although the length of the circumference of the filter segment 5 is not particularly limited, it is preferably 16 to 25 mm, more preferably 20 to 24 mm, 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 from 15 to 60 mmH ₂ O/seg. The axial length of the filter segment 5 is preferably 5-9 mm, more preferably 6-8 mm. The cross-sectional shape of the filter segment 5 is not particularly limited, but may be, for example, circular, elliptical, or polygonal. In addition, the filter segment 5 may be directly added with destructible capsules containing perfume, perfume beads, and perfume.

As shown in FIG. 1, the center hole segment 4 and the filter segment 5 can be connected with an outer plug wrapper (outer wrapping paper) 11. The outer plug wrapper 11 can be, for example, cylindrical paper. Further, the tobacco-containing segment 2, the cooling segment 3, and the connected center hole segment 4 and filter segment 5 can be connected by the mouthpiece lining paper 12. These connections can be made, for example, by applying glue such as vinyl acetate glue to the inner surface of the mouthpiece lining paper 12, inserting the three segments, and winding them. In addition, these segments may be divided into multiple times and connected with multiple lining papers.

[Non-combustion heating type flavor suction system]
The non-combustion heating flavor inhalation system according to this embodiment includes the non-combustion heating flavor inhaler according to this embodiment, and a heating device that heats the tobacco-containing segment of the non-combustion heating flavor inhaler. The non-combustion-heating flavor inhalation system according to the present embodiment may have a configuration other than the non-combustion-heating flavor inhaler and the heating device according to the present embodiment.

An example of the non-combustion heating type flavor suction system according to this embodiment is shown in FIG. The non-combustion heating flavor inhalation system shown in FIG. 2 includes a non-combustion heating flavor inhaler 1 according to this embodiment and a heating device 13 that heats the tobacco-containing segment of the non-combustion heating flavor inhaler 1 from the outside. Prepare.

FIG. 2(a) shows the state before the non-combustion heating flavor inhaler 1 is inserted into the heating device 13, and FIG. indicates the state of 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 has a cylindrical recess 19, and a heater 15 and a metal tube are provided on the inner side surface of the recess 19 at positions corresponding to the tobacco-containing segments of the non-combustion heating flavor inhaler 1 inserted into the recess 19. 16 are arranged. The heater 15 can be a heater using electric resistance, and electric power is supplied from the battery unit 17 according to an instruction from the control unit 18 for temperature control, and the heater 15 is heated. The heat emitted from the heater 15 is transmitted to the tobacco-containing segment of the non-combustion heating flavor inhaler 1 through the metal pipe 16 with high thermal conductivity.

In FIG. 2(b), there is a gap between the outer circumference of the non-combustion-heating flavor inhaler 1 and the inner circumference of the metal tube 16 because it is schematically illustrated. For the purpose of transmission, it is desirable that there is no gap between the outer circumference of the non-combustion heating type flavor inhaler 1 and the inner circumference of the metal tube 16 . The heating device 13 heats the tobacco-containing segment of the non-combustion-heating flavor inhaler 1 from the outside, but it may heat from the inside.

Although the heating temperature of the heating device is not particularly limited, it 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. The heating temperature indicates the temperature of the heater of the heating device.

Furthermore, tobacco sheets are required to have excellent workability. A sheet produced by the papermaking method is composed of fibrous tobacco leaf residue, and therefore has excellent strength, but does not have a sufficient level of surface smoothness. In addition, since the sheet produced by the casting method is dried from a wet sheet in which water is abundant, air bubbles are generated on the surface due to the generation of steam during drying. Furthermore, the smoothness is not at a sufficient level due to the fact that the edge of the wet sheet becomes loose during the process of water evaporation and contraction of the wet sheet. Moreover, when a fibrous material is blended, lumps are formed due to entanglement of the material, which also impairs the smoothness of the sheet surface. Generally, tobacco sheets are subjected to processing such as molding and cutting, and then used for smoking articles. If the surface of the tobacco sheet is not sufficiently smooth during this processing, problems such as breakage of the sheet may occur when the sheet comes into contact with a processing device. Accordingly, a tobacco sheet having excellent processability in addition to high swelling properties will be described below as a first aspect.

In addition, conventional cigarette sheets generate fine powder called so-called chipping during or after use, causing handling problems such as sticking to clothes. Therefore, if the spillage can be reduced, the handleability can be improved. Therefore, as a second aspect, a tobacco sheet having high swelling property and reduced chipping will be described below.

[First aspect]
The tobacco sheet in this aspect includes at least tobacco material and a binder.

(1) Binder A binder is one of the molding agents described above, and is an adhesive for binding tobacco materials together or tobacco materials and other components. In this embodiment, known binders can be used. Examples of such binders include polysaccharides such as guar gum and xanthan gum, CMC (carboxymethyl cellulose), CMC-Na (carboxymethyl cellulose sodium salt), and cellulose derivatives such as HPC (hydroxypropyl cellulose). The upper limit of the content of the binder is preferably 6% by mass or less in dry mass (mass excluding mixed water, the same shall apply hereinafter) relative to the dry mass of the tobacco sheet, and the lower limit is preferably 1. It is at least 3% by mass, more preferably at least 3% by mass. If the amount of the binder exceeds the upper limit or is less than the lower limit, the above effects may not be sufficiently exhibited.

Binders used in this embodiment include polysaccharides, proteins, and synthetic polymers. Specific examples of these are shown below. 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, aminoethylcellulose [cellulose esters]
Organic acid esters: cellulose acetate, cellulose formate, cellulose propionate, cellulose butyrate, cellulose benzoate, cellulose phthalate, tosyl cellulose Inorganic acid esters: cellulose nitrate, cellulose sulfate, cellulose phosphate, cellulose xanthate

1-2) Naturally-derived polysaccharides [plant-derived]
Guar Gum, Tara Gum, Roasted Bean Gum, Tamarind Seed Gum, Pectin, Arabic Gum, Tragacanth Gum, Karaya Gum, Gutti Gum, Arabinogalactan, Amaseed Gum, Cassia Gum, Psyllium Seed Gum, Mackerel Seed Gum [from Algae]
Carrageenan, agar, alginic acid, propylene glycol alginate, furcelleran, fukuronori extract [derived from microorganisms]
Xanthan gum, gellan gum, curdlan, pullulan, agrobacterium succinoglycan, welan gum, macrohomopsis gum, rhamzan gum [from crustaceans]
Chitin, chitosan, glucosamine [starches]
Starch, sodium starch glycolate, pregelatinized starch, dextrin

2) Protein Wheat gluten, rye gluten

3) Synthetic polymer polyphosphoric acid, sodium polyacrylate, polyvinylpyrrolidone

(2) Tobacco material The tobacco material used in this embodiment may be the above-described fibrous tobacco material or the above-described tobacco raw material. In this embodiment, as the tobacco material other than the fibrous tobacco material, specifically, dried tobacco leaves cut into pieces, leaf tobacco pulverized material, or the like can be used. Leaf tobacco pulverized material is particles obtained by pulverizing leaf tobacco. The particle size D90 of pulverized leaf tobacco is preferably 200 μm or more as described above, but the upper limit thereof is preferably 1000 μm or less, more preferably 50 to 500 μm. Also, the average particle diameter D50 can be preferably 20 to 1000 μm, more preferably 50 to 500 μm. Pulverization can be performed using a known pulverizer, and may be either dry pulverization or wet pulverization. Leaf tobacco pulverized products are therefore also referred to as leaf tobacco particles. In this embodiment, the particle size is determined by a laser diffraction/scattering method, and specifically measured using a laser diffraction particle size distribution analyzer (eg, Horiba LA-950). In addition, the type of tobacco is not limited, and yellow varieties, burley varieties, orient varieties, native varieties, and other Nicotiana tabacum varieties and Nicotiana rustica varieties can be used. Although the amount of tobacco material in the tobacco sheet is not particularly limited, it is preferably 50 to 95% by weight, more preferably 60 to 90% by weight on a dry weight basis.

(3) Aerosol-generating agent In this embodiment, known aerosol-generating agents can be used, and examples thereof include glycerin, polyhydric alcohols such as propylene glycol (PG), triethyl citrate (TEC), Those having a boiling point of over 100°C, such as triacetin, can be mentioned. In this embodiment, the amount of the aerosol-generating agent in the tobacco sheet is preferably 5 to 40 mass %, more preferably 10 to 20 mass % in terms of dry mass (mass excluding mixed water; the same shall apply hereinafter). If the amount of the aerosol-generating agent exceeds the upper limit, it may become difficult to manufacture the tobacco sheet, and if it is less than the lower limit, the smoke sensitivity may decrease.

(4) Emulsifier In this aspect, the tobacco sheet may contain an emulsifier. Emulsifiers enhance the affinity between the aerosol-generating agent, which is lipophilic, and the tobacco material, which is hydrophilic. Therefore, addition of an emulsifier is effective especially when using a lipophilic aerosol-generating agent. Known emulsifiers can be used, and examples thereof include emulsifiers having an HLB value of 8-18. Although the amount of the emulsifier is not particularly limited, it is preferably 0.1 to 3 parts by weight, more preferably 1 to 2 parts by weight in terms of dry weight with respect to 100 parts by weight of the tobacco sheet.

(5) Flavor In this aspect, the tobacco sheet may contain a flavor. A flavoring agent is a substance that provides an odor or flavor. The perfume may be a natural perfume or a synthetic perfume. As the perfume, one kind of perfume may be used, or a mixture of multiple kinds of perfumes may be used. Any flavor commonly used in smoking articles can be used as the flavor, specific examples of which are described below. Flavoring agents can be included in the sheet for smoking articles in an amount such that the smoking article can provide the desired aroma and flavor, for example, the amount is preferably 1 to 30% by weight, more preferably 1 to 30% by weight in the tobacco sheet. is 2 to 20% by mass.

The type of perfume is not particularly limited, and from the viewpoint of imparting a good perfume feeling, acetoanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise. Oil, apple juice, Peruvian balsam oil, beeswax absolute, benzaldehyde, benzoin resinoids, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom. Oil, carob absolute, beta-carotene, carrot juice, L-carvone, beta-caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, cinnamyl alcohol, cinnamyl cinnamate, Citronella oil, DL-citronellol, clary sage extract, cocoa, coffee, cognac oil, coriander oil, cumin aldehyde, davana oil, δ-decalactone, γ-decalactone, decanoic acid, dill herb oil, 3,4-dimethyl-1, 2-cyclopentanedione, 4,5-dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 3,7-dimethyl-6-octenoic acid, 2,3-dimethylpyrazine, 2,5-dimethyl Pyrazine, 2,6-dimethylpyrazine, ethyl 2-methylbutyrate, ethyl acetate, ethyl butyrate, ethyl hexanoate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl octanoate, oleic acid Ethyl, ethyl palmitate, ethyl phenylacetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin, ethyl vanillin glucoside, 2-ethyl-3, (5 or 6)-dimethylpyrazine, 5-ethyl-3- Hydroxy-4-methyl-2(5H)-furanone, 2-ethyl-3-methylpyrazine, eucalyptol, fenugreek absolute, gene absolute, gentian root infusion, geraniol, geranyl acetate, grape juice, guaiacol, guava extract. , γ-heptalactone, γ-hexalactone, hexanoic acid, cis-3-hexen-1-ol, hexyl acetate, 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, inmol Terabsolute, beta-ionone, isoamyl acetate, isoamyl butyrate, isoamyl phenylacetate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute, cola nut tincture, labdanum oil, lemon terpeneless oil, licorice extract, linalool, linalyl acetate, lobage Root oil, maltol, maple syrup, menthol, menthone, L-menthyl acetate, para-methoxybenzaldehyde, methyl-2-pyrrolyl ketone, methyl anthranilate, methyl phenylacetate, methyl salicylate, 4'-methylacetophenone, methylcyclopentenolone, 3 - Methylvalerate, Mimosa Absolute, Honeysuckle, Myristic Acid, Nerol, Nerolidol, γ-Nonalactone, Nutmeg Oil, δ-Octalactone, Octanal, Octanoic Acid, Orange Flower Oil, Orange Oil, Orris Root Oil, Palmitic Acid, ω - pentadecalactone, peppermint oil, petitgrain paraguay oil, phenethyl alcohol, phenethyl phenylacetate, phenylacetic acid, piperonal, plum extract, propenylguaethol, propyl acetate, 3-propylidenephthalide, prune juice, pyruvic acid, Raisin extract, rose oil, rum, sage oil, sandalwood oil, spearmint oil, styrax absolute, marigold oil, tea distillate, α-terpineol, terpinyl acetate, 5,6,7,8-tetrahydroquinoxaline, 1,5,5,9-tetramethyl-13-oxacyclo(8.3.0.0(4.9))tridecane, 2,3,5,6-tetramethylpyrazine, thyme oil, tomato extract, 2 -tridecanone, triethyl citrate, 4-(2,6,6-trimethyl-1-cyclohexenyl)2-buten-4-one, 2,6,6-trimethyl-2-cyclohexene-1,4-dione, 4 -(2,6,6-trimethyl-1,3-cyclohexadienyl)2-buten-4-one, 2,3,5-trimethylpyrazine, γ-undecalactone, γ-valerolactone, vanilla extract, Vanillin, veratraldehyde, violet leaf absolute, N-ethyl-p-menthane-3-carbamide (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, rosepipe powder, chamomile flower powder, lemon verbena powder, peppermint powder, leaf powder, spearmint powder, black tea powder, natural plants. fragrances (e.g. jasmine oil, lemon oil, vetiver oil, lobage oil), esters (e.g. menthyl acetate, isoamyl propionate, etc.), alcohols (e.g. phenylethyl alcohol, cis-6-nonene-1- all, etc.). These perfumes may be used singly or in combination of two or more.

(6) Characteristics and form of tobacco sheet 1) Arithmetic mean surface roughness Sa
The tobacco sheet in this aspect preferably has Sa of 5 to 30 μm on at least one surface. Sa is an index of surface roughness, and when the tobacco sheet of this embodiment has Sa within the above range, it is excellent in workability, and furthermore, it has reduced chipping from the surface. From this point of view, Sa is more preferably 10 to 25 μm, still more preferably 10 to 20 μm. Both sides of the tobacco sheet of this aspect preferably have Sa within the above range.

2) Thickness The thickness of the tobacco sheet is not limited, but in one aspect it is preferably 20 to 2000 μm, more preferably 100 to 1500 μm, and even more preferably 100 to 1000 μm.

3) Mechanical properties The tobacco sheet in this embodiment preferably has a tensile elongation of 2.0% or more, more preferably 3.0% or more, and still more preferably 5.0% or more. Although the upper limit of the tensile elongation is not limited, it is usually about 15% or less. Further, the tobacco sheet preferably has a tensile stress of 2.0 N/mm or more, more preferably 2.5 N/mm or more, and still more preferably 3.0 N/mm or more.

4) Handleability The smoothness of the tobacco sheet in this embodiment affects the handleability of the product. For example, a smoking article using a tobacco sheet with poor smoothness generates fine powder called shavings during or after use, which may cause problems in handling such as sticking to clothes. However, since the tobacco sheet of the present invention is excellent in smoothness, the occurrence of such problems can be suppressed.

(7) Tobacco segments Tobacco segments for use in smoking articles can be produced from tobacco sheets. In one aspect, the tobacco segment comprises a tubular wrapper, and comprises a tobacco sheet spirally packed in the wrapper (see FIG. 3(A)). In the figure, 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 can have a length of 15-80 mm and a diameter of the order of 5-10 mm. Further, the tobacco segment 20A shown in FIG. 3A can be cut to have an aspect ratio (length/diameter) of about 0.5 to 1.2 (see FIG. 3(B)).

The tobacco segment 20A, in another embodiment, comprises a tubular wrapper 22, and comprises a tobacco sheet T folded and filled inside the wrapper. The ridgeline produced by folding is substantially parallel to the longitudinal direction of the segment (see FIG. 3(C)). The tobacco segment 20A is preferably rod-shaped, and can have a length of 15-80 mm and a diameter of the order of 5-10 mm. In this embodiment, it is preferable that the tobacco sheet T is preliminarily subjected to surface wrinkling such as pleating or crimping.

In another aspect, the tobacco segment 20A includes a tubular wrapper 22, and includes a tobacco sheet cut piece Tc filled in the wrapper (see FIG. 3(D)). The tobacco segment 20A is preferably rod-shaped, and can have a length of 15-80 mm and a diameter of the order of 5-10 mm. Although the size of the cut piece is not limited, 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 embodiment, the tobacco segment 20A is provided with a cylindrical wrapper 22, and provided with strand-type cuts filled in the wrapper (see FIG. 3(E)). The strand type cuts are filled so that the longitudinal direction thereof is substantially parallel to the longitudinal direction of the wrapper 22 . The width of the strand type cut can be about 0.5 to 1.5 mm.

The tobacco segment 20A, in another embodiment, comprises a tubular wrapper 22 and comprises cut tobacco filling randomly filled in the wrapper. Tobacco cuts are cut and different from strand-type cuts.

[Production method]
The tobacco sheet in this aspect can be manufactured by any method, but is preferably manufactured by a method comprising the following steps.
Step 1 of kneading at least a fibrous material, a tobacco material, a binder and a medium to prepare a mixture.
Step 2 of pressing the mixture or extruding it through a die to prepare a wet sheet.
Step 3 of drying the wet sheet.
A sheet formed by applying pressure in this way is called a "pressure-formed sheet", and as described later, the "pressure-formed sheet" includes a "laminate sheet" and an "extruded sheet". A laminate sheet is a sheet obtained by rolling out a mixture to a target thickness with a roller one or more times and then drying to a target moisture content. An extruded sheet is a sheet obtained by extruding a mixture from a T-die or the like to a target thickness and then drying to a target moisture content. Flattening and extrusion may be combined in pressure formed sheets. For example, the mixture may be extruded and then further rolled into a sheet.

(1) Process 1
In this step, a fibrous material, a tobacco material, a binder, and a medium are kneaded. Aerosol-forming bases, emulsifiers, or fragrances can also be added, if desired. The blending amount of each component is adjusted so as to achieve the aforementioned amounts. The medium preferably contains water or a water-soluble organic solvent such as ethanol having a boiling point of less than 100° C. as a main component, and more preferably water or ethanol.

This step can be carried out by kneading each component, but is preferably carried out through 1) pulverization of raw material (for example, single leaf), 2) preparation of wet flour, and 3) kneading.
1) Pulverization It is preferable to coarsely crush the raw material and then finely pulverize it using a pulverizer (eg, ACM-5 manufactured by Hosokawa Micron). The particle size D90 after milling is preferably between 20 and 1000 μm. The particle size is measured using a laser diffraction particle size meter such as Mastersizer (manufactured by Malvern).

2) Preparation of Wet Powder To pulverized tobacco raw materials (for example, tobacco particles), a binder and, if necessary, additives such as flavor and lipid are added and mixed. Since this mixing is preferably a dry blend, it is preferred to use a mixer as a mixer. Next, a medium such as water and, if necessary, an aerosol-generating base material such as glycerin are added to the dry blend and mixed in a mixer to prepare a wet powder (powder in a wet state). The amount of the medium in the wet powder can be 20-80% by weight, preferably 20-40% by weight, and is adjusted according to step 2. For example, the amount of the medium can be 20 to 50% by weight when compression is performed in step 2, and 20 to 80% by weight when extrusion is performed. The wet powder preferably has a solid content concentration of 50 to 90% by mass.

3) Kneading The wet powder is kneaded using a kneader (eg, DG-1 manufactured by Dalton). The kneading is preferably carried out until the medium spreads over the whole. For example, kneading is preferably carried out until the color of the mixture becomes uniform visually.

(2) Process 2
In this step, the mixture (wet powder) is compressed or extruded through a die to prepare a wet sheet. For example, while sandwiching the mixture between two base films, it is passed between a pair of rollers until it reaches a predetermined thickness (more than 100 μm) using a calendering device (manufactured by Yuri Roll Machinery Co., Ltd.), and pressed. It can be spread out to give a laminate with a wet sheet between the two substrate films. A non-adhesive film such as a fluoropolymer film is preferable as the base film. Roller compression can be performed multiple times. Alternatively, the mixture (wet powder) can be extruded through a die (preferably a T-die) provided with a predetermined gap to form a wet sheet on the substrate. As the base material, known ones such as a glass plate, a metal plate, and a plastic plate can be used. A known extruder can be used for extrusion.

(3) Process 3
In this step, the wet sheet is dried. For example, in lamination, this step can be carried out according to the following procedure. 1) Peel off one base film. 2) Dry the laminate using a forced air dryer. The drying temperature may be room temperature, 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. Drying in this way can prevent the tobacco sheet from adhering to other substrates. The tobacco sheet thus obtained is also called a "laminate sheet". The laminate sheet is preferable because it has a smooth surface and can suppress the occurrence of chipping when it comes into contact with other members. Also, the method is suitable for producing sheets of 300 μm or less.

Also, in the case of extrusion molding, the wet sheet on the substrate is air-dried or heated to dry. Drying conditions are as described above. The tobacco sheet thus obtained is also called an "extruded sheet". The extruded sheet is preferable because it has a smooth surface and can suppress the occurrence of chipping when it comes into contact with other members. The method is suitable for producing sheets of 200 μm and above.

[Second aspect]
The tobacco sheet in this aspect contains a tobacco material and a cellulose derivative having a degree of substitution of 0.65 or more as a binder.

(1) Binder In this embodiment, a cellulose derivative having a degree of substitution of 0.65 or more is used as the binder. A cellulose derivative is a cellulose in which the —OH group of the gluconopyranose residue is modified. Those in which the —OH group is modified to an —OR group (R is an organic group) are called cellulose ethers, and those in which an —OX group (X is a group derived from an acid) are called cellulose esters. Both can be used in the present invention.

The degree of substitution is the number of substituents per gluconopyranose residue, that is, the number of modified OH groups. The degree of substitution used in the present invention is preferably 0.65 or more, more preferably 0.7 or more, still more preferably 0.8 or more. Also, the upper limit of the degree of substitution is preferably 3.0 or less, more preferably 2.0 or less, still more preferably 1.6 or less, and particularly preferably 1.0 or less.

The degree of substitution is measured by known methods. For example, the degree of substitution is measured by the nitric acid-methanol method. The method is as follows: 1) About 2.0 g of a sample is accurately weighed and placed in a 300 ml stoppered Erlenmeyer flask. Add 100 ml of methanol nitrate (1 g of anhydrous methanol to 100 ml of special grade concentrated nitric acid) and shake for about 2 hours to convert terminal acid groups from salt form to hydrogen form (for example, from COONa to COOH). 2) The sample is filtered through a glass filter 1G3, washed with 200 ml of 80% methanol, and dried at 105° C. for 2 hours. 3) Accurately weigh about 1 to 1.5 g of the absolutely dried sample, put it in a 300 ml stoppered Erlenmeyer flask, wet it with 150 ml of 80% methanol, add 50 ml of 0.1 N NaOH, and shake it at room temperature for 2 hours. . Excess NaOH is back-titrated with 0.1 N sulfuric acid using phenolphthalein as an indicator. 4) Obtain the degree of substitution from the following formula.
Degree of substitution = 0.162A/(1-0.058A)
A = 50 × F' - the amount of sulfuric acid (ml) × F / absolute dry sample mass (g) × 0.1
F: factor of sulfuric acid F': factor of NaOH

In cellulose ethers, there are up to three Rs, and each R may be the same or different. R is a C1-C3 linear or branched alkyl group such as a methyl group, an ethyl group, a propyl group; Hydroxyalkyl group; C7-C20 arylalkyl group such as benzyl group and trityl group; Cyanoalkyl group such as cyanoethyl group; Carboxyalkyl group such as carboxymethyl group and carboxyethyl group; Aminoalkyl group such as aminoethyl group are mentioned. Among them, R is preferably a carboxyalkyl group, more preferably a carboxymethyl group. The degree of substitution in cellulose ethers is also called degree of etherification.

In cellulose ethers, there are up to three Xs, and each X may be the same or different. X is a group derived from C0 to C4 carboxylic acids such as formic acid, acetic acid, propionic acid and butyric acid; a group derived from C6 to C10 aromatic carboxylic acids such as benzoic acid and phthalic acid; p-toluenesulfonic acid groups derived from sulfonic acid such as ; groups derived from inorganic acids such as nitric acid, sulfuric acid and phosphoric acid; groups derived from xatogenic acid. The degree of substitution in cellulose esters is also called the degree of esterification.

Since the cellulose derivative is highly hydrophilic, its affinity with tobacco materials is improved when it is used as a binder. As a result, the strength of the tobacco sheet is improved, and it becomes difficult for the tobacco sheet to crack during use.

Furthermore, the cellulose derivative is soluble in organic solvents, especially ethanol. Therefore, as will be described later, when a mixture containing ethanol as a medium is used in the manufacture of tobacco sheets, the viscosity of the mixture can be lowered, which is more advantageous than a mixture containing water as a medium in transportation and coating processes in manufacturing. is. In addition, since ethanol evaporates more easily than water, it is possible to shorten the production time and reduce the energy cost during drying in the above production method.

The amount of the cellulose derivative in the tobacco sheet is not particularly limited, but is preferably 0.1 to 10% by mass in terms of dry mass (mass excluding mixed water, hereinafter the same) relative to the dry mass of the tobacco sheet. , more preferably 1 to 5% by mass, and further 2 to 4% by mass. If the amount of the binder exceeds the upper limit or is less than the lower limit, the above effects may not be sufficiently exhibited.

Specific examples of cellulose derivatives are shown below.
Cellulose ethers: methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxymethylethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, benzylcellulose, tritylcellulose, cyanoethylcellulose, carboxymethylcellulose, carboxyethylcellulose, aminoethylcellulose Cellulose esters: cellulose acetate, cellulose formate, Organic acid esters such as cellulose propionate, cellulose butyrate, cellulose benzoate, cellulose phthalate, tosylcellulose cellulose nitrate; inorganic acid esters such as cellulose sulfate, cellulose phosphate, and cellulose xanthate

(2) Tobacco Material In this aspect, the tobacco material described in the first aspect can be used in addition to the fibrous tobacco material.

(3) Aerosol-Generating Agent In this aspect, the tobacco sheet may contain the aerosol-generating agent described in the first aspect.

(4) Emulsifier In this aspect, the tobacco sheet may contain the emulsifier described in the first aspect.

(5) Cellulose other than tobacco In this aspect, the tobacco sheet may contain cellulose other than tobacco. Cellulose other than tobacco includes, for example, the aforementioned cellulose fibers and cellulose powder, and does not include cellulose derivatives as binders.

(6) Flavor In this aspect, the tobacco sheet may contain the flavor described in the first aspect.

(7) Characteristics and Form of Tobacco Sheet 1) Thickness The thickness of the tobacco sheet in this aspect is not limited, but in one aspect it is preferably 20 to 2000 μm, more preferably 100 to 1500 μm, still more preferably 100 to 1000 μm. .

2) Strength The tobacco sheet in this embodiment preferably has a tensile stress of 1.7 N/mm or more, more preferably 2 N/mm or more, still more preferably 3 N/mm or more.

3) Arithmetic mean surface roughness Sa
The tobacco sheet in this aspect preferably has an arithmetic mean surface roughness Sa of 0.03 mm or less. Sa is an index of surface roughness, and when the tobacco sheet in this embodiment has Sa within the above range, the amount of chipping from the surface is reduced. From this point of view, the upper limit of Sa is more preferably 0.02 mm or less.

(8) Tobacco Segments Tobacco segments for use in smoking articles can be produced from tobacco sheets. The tobacco segment in this aspect is as described in the first aspect.

[Production method]
The tobacco sheet in this aspect can be manufactured by any method, but is preferably manufactured by a method comprising the following steps.
Step 1 of preparing a mixture comprising at least a tobacco material, the cellulose derivative and a medium;
Step 2 of spreading the mixture on a substrate to prepare a wet sheet, and Step 3 of drying the wet sheet.

(1) Process 1
In this step, a fibrous material, optionally a tobacco material, a cellulose derivative as a binder, and a medium are mixed. Aerosol-forming bases, emulsifiers, or fragrances can also be added, if desired. The blending amount of each component is adjusted so as to achieve the aforementioned amounts. The medium preferably contains water or a water-soluble organic solvent such as ethanol having a boiling point of less than 100° C. as a main component, and more preferably water or ethanol. The mixing method is not limited, and known equipment such as mixers and kneaders can be used. The solid content concentration of the mixture obtained by mixing is not limited, and is appropriately adjusted so as to be suitable for step 2. For example, the upper limit of the solid content concentration is preferably 98% by mass or less, 90% by mass or less, or 80% by mass or less, and the lower limit is preferably 10% by mass or more, 20% by mass or more, or 30% by mass or more. , 40% by mass or more, or 50% by mass or more.

(2) Process 2
In this step, the mixture is spread on a substrate to prepare a wet sheet. The substrate is not limited, and includes inorganic material substrates such as glass plates, metal substrates such as aluminum plates, organic material substrates such as PET films and fluoropolymer films, and fiber material substrates such as nonwoven fabrics. The method of spreading the mixture on the base material is not limited, but as described later, a rolling method of rolling using rollers, an extrusion method of extruding from a die, and a casting method of casting can be mentioned.

(3) Drying step In this step, the wet sheet is dried. Drying can be carried out according to known methods. For example, the wet sheet can be air dried at room temperature or heated to dry. The heating temperature is also not limited, and can be, for example, 60 to 150.degree. The dried sheet is separated from the substrate to obtain the tobacco sheet.

Preferred embodiments of the tobacco sheet manufacturing method of this embodiment will be described below.
[Rolling method]
1) Process 1
1-1) Grinding A raw material (for example, a single leaf) is coarsely ground. Then, fine pulverization is performed using a pulverizer (eg, ACM-5 manufactured by Hosokawa Micron). The particle size (D90) after milling is preferably between 50 and 800 μm. The particle size is measured using a laser diffraction particle size meter such as Mastersizer (manufactured by Malvern).

1-2) Preparation of Wet Powder To pulverized tobacco raw material (for example, tobacco particles), a binder, a fibrous material, and, if necessary, additives such as flavor and lipid are added and mixed. Since this mixing is preferably a dry blend, it is preferred to use a mixer as a mixer. Next, a medium such as water and, if necessary, an aerosol-generating base material such as glycerin are added to the dry blend and mixed in a mixer to prepare a wet powder (powder in a wet state). The amount of the medium in the wet powder can be 20 to 80% by mass, preferably 20 to 40% by mass. The wet powder preferably has a solid content concentration of 50 to 90% by mass.

1-3) Kneading The wet powder is kneaded using a uniaxial or multiaxial kneader such as a kneader (DG-1 manufactured by Dalton Co., etc.). The kneading is preferably carried out until the medium spreads over the whole. For example, kneading is preferably carried out until the color of the mixture becomes uniform visually.

2) Process 2 (pressing)
While sandwiching the mixture after kneading between two base films, it is passed between a pair of rollers until it reaches a predetermined thickness (more than 100 μm) using a calender device (manufactured by Yuri Roll Machinery Co., Ltd.). , to obtain a laminate with a wet sheet between the two substrate films. Roller compression can be performed multiple times. The base film is preferably a non-adhesive film such as a fluoropolymer film, specifically a Teflon (registered trademark) film.

3) Process 3
One of the base films in the laminate is peeled off. The laminate is dried using an air dryer. The drying temperature is preferably 50-100° C. and the drying time can be 1-2 minutes. Next, the remaining base film is peeled off and dried under the above conditions to obtain a tobacco sheet. Drying in this way can prevent the tobacco sheet from adhering to other substrates.

The tobacco sheet obtained by this method is also called "laminate sheet". The laminate sheet is preferable because it has a smooth surface and can suppress the occurrence of chipping when it comes into contact with other members. Also, the method is suitable for producing sheets of 300 μm or less.

[Extrusion method]
1) Process 1
Step 1 in this method is as described in the rolling method. Prepare wet flour (wet flour). When extrusion is performed in step 2, the amount of the medium in the wet powder can be selected in the range of 20-80% by mass, preferably 20-40% by mass.
2) Process 2
In this step, the wet powder is extruded through a die provided with a predetermined gap to form a wet sheet on the substrate. A known extruder can be used for extrusion.
3) Process 3
In this step, the wet sheet is dried to obtain a tobacco sheet. The drying conditions are as described for the rolling method. The tobacco sheet obtained by this method is also called an "extruded sheet". The extruded sheet is preferable because it has a smooth surface and can suppress the occurrence of chipping when it comes into contact with other members. The method is suitable for producing sheets of 200 μm and above.

Also, a sheet molded under pressure in this way is called a "pressure-molded sheet", and "pressure-molded sheet" includes "laminate sheet" and "extruded sheet". A laminate sheet is a sheet obtained by rolling out a mixture to a target thickness with a roller one or more times and then drying to a target moisture content. An extruded sheet is a sheet obtained by extruding a mixture from a T-die or the like to a target thickness and then drying to a target moisture content. Flattening and extrusion may be combined in pressure formed sheets. For example, the mixture may be extruded and then further rolled into a sheet.

[Cast method]
1) Process 1
Step 1 in the method can be performed in any manner. For example, a mixture can be prepared by mixing a tobacco raw material having a desired particle size, a cellulose derivative, a medium, and, if necessary, additives with a mixer or the like. Since the solid content concentration of the mixture obtained in this step is preferably about 3 to 15% by mass, the mixture is also called slurry.

2) Process 2
In this step, the slurry is cast on the substrate to form a wet sheet. Casting can be carried out as known.

3) Process 3
In this step, the wet sheet is dried to obtain a tobacco sheet. The drying conditions are as described for the rolling method. The tobacco sheet obtained by this method is also called "cast sheet".

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

[Example 1]
Tobacco lamina (leaf tobacco) was dry pulverized with a Hosokawa Micron ACM machine to obtain tobacco powder. For the tobacco powder, the cumulative 90% particle diameter (D90) in the volume-based particle size distribution measured by the dry laser diffraction method is measured using a Mastersizer (trade name, manufactured by Spectris Co., Ltd., Malvern Panalytical Division). As a result, it was 200 μm.

Using the tobacco powder as a tobacco raw material, a tobacco sheet was produced by a rolling method. Specifically, 77 parts by mass of the tobacco raw material, 12 parts by mass of glycerin as an aerosol generating agent, 1 part by mass of carboxymethyl cellulose as a molding agent, and fibrous pulp as a fibrous material (canfor pulp) 10 parts by mass of dry defibrated product) were mixed and kneaded by an extruder. The kneaded product was formed into a sheet by two pairs of metal rolls and dried in a hot air circulating oven at 80° C. to obtain a tobacco sheet. The tobacco sheet was shredded to a size of 0.8 mm×9.5 mm using a shredder.

The swelling properties of the shredded tobacco sheets were measured. Specifically, the cut tobacco sheets were left in a conditioning room at 22° C. and 60% for 48 hours, and then measured for swelling with DD-60A (trade name, manufactured by Borgwald). The measurement was carried out by placing 15 g of cut tobacco sheets in a cylindrical container having an inner diameter of 60 mm and compressing the container with a load of 3 kg for 30 seconds to determine the volume. Table 1 shows the results. In addition, in Table 1, the swelling property is shown as an increase rate (%) of the swelling property with respect to the reference value of the swelling property value of Comparative Example 1 described later.

[Comparative Example 1]
Tobacco powder was prepared in the same manner as in Example 1. Using the tobacco powder as a tobacco raw material, a tobacco sheet was produced by a rolling method. Specifically, 87 parts by mass of the tobacco raw material, 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 by an extruder. The kneaded product was formed into a sheet by two pairs of metal rolls and dried in a hot air circulating oven at 80° C. to obtain a tobacco sheet. The tobacco sheet was shredded to a size of 0.8 mm×9.5 mm using a shredder. The swelling properties of the shredded tobacco sheets were measured in the same manner as in Example 1. Table 1 shows the results.

As can be seen from Table 1, the tobacco sheet of Example 1, which is the tobacco sheet according to the present embodiment, has improved swelling properties compared to the tobacco sheet of Comparative Example 1, which does not contain a fibrous material. In Example 1, the tobacco sheet was produced by the rolling method, but when the tobacco sheet was similarly produced by the casting method, the swelling property was improved.

[Reference example A1]
Tobacco leaves were pulverized using a pulverizer (ACM-5 manufactured by Hosokawa Micron) so that D90 was 204 μm and D50 was 66 μm to obtain leaf tobacco particles. D90 and D50 were measured with a Mastersizer (manufactured by Malvern). Leaf tobacco particles and Sunrose F20HC (cellulose ether manufactured by Nippon Paper Industries Co., Ltd.) as a binder were dry-blended using a mixer. Then, glycerin as an aerosol-generating base and water as a medium were added to the dry blend and mixed in a mixer to prepare a wet powder. The formulation 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. A T-die was used as the die, and the screw rotation speed was 38.5 rpm.

Wet powder is sandwiched between two Teflon (registered trademark) films (NITOFLON (R) No.900UL manufactured by Nitto Denko Corporation), and a predetermined thickness (over 100 μm) is obtained using a calendar device (manufactured by Yuri Roll Machinery Co., Ltd.). A 105 μm thick laminate having a layer structure of film/wet sheet/film was prepared by rolling in four stages until it was . The roll gaps for the first to fourth stages were 650 μm, 330 μm, 180 μm and 5 μm, respectively. The 4th roll gap is thicker than the final thickness of the sheet because the sheet expands to near the final thickness when released from the pressure between the rollers.

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

In Table A1, the wet powder medium weight indicates the amount of dry matter for the pulverized tobacco leaves, glycerin, and binder, and the water indicates the total amount of the charged mass and the water content contained in the pulverized tobacco leaves, glycerin, and binder.

[Reference Examples A2 and A4]
A tobacco sheet was produced and evaluated in the same manner as in Reference Example A1, except that Sunrose F30MC and Sunrose F20LC were used as binders instead of Sunrose F20HC (cellulose ether manufactured by Nippon Paper Industries Co., Ltd.).

[Reference example A3]
Instead of Sunrose F20HC (cellulose ether manufactured by Nippon Paper Industries Co., Ltd.) as a binder, Sunrose F30MC was used, the blending amount was changed as shown in Table A3, and the amount of glycerin was 15.5 DB mass in terms of the charged mass ratio. %, a tobacco sheet was produced and evaluated in the same manner as in Reference Example A1.

[Reference Comparative Example A1]
Leaf tobacco particles having a D90 of 204 μm and a D50 of 66 μm were obtained in the same manner as in Reference Example A1. The same ingredients and pulp as in Reference Example A1 were mixed in a mixer to obtain a mixture. Using the mixture, a tobacco sheet was produced by a casting method according to a standard method.

[Reference Comparative Example A2]
A tobacco sheet was produced by a papermaking method according to a standard method. Specifically, the water-soluble component of the tobacco raw material is extracted with water, the extraction residue, pulp and water are mixed, beaten using a grinder, formed into a sheet with a paper machine, the sheet is dried, The extract and glycerin were added to the sheet. The tobacco sheet was evaluated in the same manner as in Reference Example A1. The composition of the sheet is shown in Table A2. Table A3 shows the evaluation results of the tobacco sheets produced in the above examples.

The evaluation method will be described below.
[Volume of spillage]
The tobacco sheets prepared in each example were cut to prepare cut pieces. A wrapper 22 having a length of 12 mm and a diameter of 7 mm was filled with the cut pieces at 70% by volume to prepare a tobacco-containing segment 20A. Next, a flavor inhalation article 1 shown in FIG. 1 comprising the tobacco-containing segment was prepared. A system (internal heating type) as shown in FIG. 2 was prepared and subjected to a smoking test (14 puffs, CIR conditions, constant heating at 350° C.) using a smoking machine. After the smoking test, the mince were gently removed from the tobacco segment 20A. Then, the minced meat was newly filled into the wrapper 22 again at the above volume % and subjected to the second smoking test. A total of 20 smoking tests were conducted in this manner, and the volume of total minced spillage remaining in the wrapper 22 was measured.

[Surface roughness]
Using a microscope (VK-X100 manufactured by KEYENCE), measurements were made according to the following procedure.
1) Set the focal position of the lowest part of the sheet 2) Set the focal position of the highest part of the sheet 3) Divide the section obtained in 1) and 2) above, and image while shifting the focus little by little 4 ) Measure the height from the difference between the focus position of each part and the focus position of the lowest part. Calculate

[Tensile strength, elongation]
The obtained sheet was cut into a width of 15 mm and a length of 180 mm, and measured using a tensile strength tester (Toyo Seiki Seisakusho Co., Ltd.: Strograph ES) under the conditions of ROADRANGE: 25 and SPEEDRANGE: 50. was evaluated by tensile stress.

[Reference example B1]
Tobacco leaves were pulverized using a pulverizer (ACM-5 manufactured by Hosokawa Micron) so that D90 was 50 to 800 μm to obtain leaf tobacco particles. D90 was measured with a Mastersizer (manufactured by Malvern). Leaf tobacco particles and carboxymethyl cellulose (Sunrose FF30MC manufactured by Nippon Paper Industries Co., Ltd.) as a binder were dry-blended using a mixer. Then, glycerin as an aerosol-generating base and water as a medium were added to the dry blend and mixed in a mixer to prepare a wet powder. The composition of each component is as follows.

In the weight of the wet powder in Table B1, the crushed tobacco leaf material, glycerin, and binder indicate the amount of dry matter, and water indicates the total amount of the charged mass and the weight of water contained in the crushed tobacco leaf material, glycerin, and binder.

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

Wet powder is sandwiched between two Teflon (registered trademark) films (NITOFLON (R) No.900UL manufactured by Nitto Denko Corporation), and a predetermined thickness (over 100 μm) is obtained using a calendar device (manufactured by Yuri Roll Machinery Co., Ltd.). A 105 μm thick laminate having a layer structure of film/wet sheet/film was prepared by rolling in four stages until it was . The roll gaps for the first to fourth stages were 650 μm, 330 μm, 180 μm and 5 μm, respectively. The 4th roll gap is thicker than the final thickness of the sheet because the sheet expands to near the final thickness when released from the pressure between the rollers.

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

[Reference Examples B2 to B5]
Tobacco sheets were produced and evaluated in the same manner as in Reference Example B1, except that carboxymethylcellulose shown in Table B2 (both manufactured by Nippon Paper Industries Co., Ltd.) was used as the binder.

[Reference Comparative Example B1]
A tobacco sheet was produced and evaluated in the same manner as in Reference Example B1, except that carboxymethyl cellulose (manufactured by Nippon Paper Industries Co., Ltd.) shown in Table B2 was used as the binder. These results are shown in Table B3. In the table, the physical properties of the finished sheet indicate the physical properties of the sheet that has been dried as described above and has not been dried to the absolute dry state.

The evaluation method will be described below.
[Volume of spillage]
The tobacco sheets prepared in each example were cut to prepare cut pieces. A wrapper 22 having a length of 12 mm and a diameter of 7 mm was filled with the cut pieces at 70% by volume to prepare a tobacco-containing segment 20A. Next, a flavor inhalation article 1 shown in FIG. 1 comprising the tobacco-containing segment was prepared. A system (internal heating type) as shown in FIG. 2 was prepared and subjected to a smoking test (14 puffs, CIR conditions, constant heating at 350° C.) using a smoking machine. After the smoking test, the mince were gently removed from the tobacco segment 20A. Then, the minced meat was newly filled into the wrapper 22 again at the above volume % and subjected to the second smoking test. A total of 20 smoking tests were conducted in this manner, and the volume of total minced spillage remaining in the wrapper 22 was measured.

[Surface roughness]
Using a microscope (VK-X100 manufactured by KEYENCE), measurements were made according to the following procedure.
1) Set the focal position of the lowest part of the sheet 2) Set the focal position of the highest part of the sheet 3) Divide the section obtained in 1) and 2) above, and image while shifting the focus little by little 4 ) Measure the height from the difference between the focus position of each part and the focus position of the lowest part. Calculate

[Chemability after heating]
A non-combustion internally heated smoking system was prepared under the conditions described in Spillage Volume, and one smoking test was conducted under the same conditions. After the test, the tobacco segment 20A was taken out from the system, and a jig was applied to a position 6 mm in the longitudinal direction from the tip, and radially compressed at a constant speed, and the load (N ) was obtained, and the solidification property after heating was evaluated. The higher the load value, the more easily the chopped pieces adhere after heating, and the less likely the chopped pieces are spilled.

[Tensile strength]
The obtained sheet was cut into a width of 15 mm and a length of 180 mm, and measured using a tensile strength tester (Toyo Seiki Seisakusho Co., Ltd.: Strograph ES) under the conditions of ROADRANGE: 25 and SPEEDRANGE: 50. was evaluated by tensile stress.

[Degree of substitution]
It was obtained by the measurement method described above.

Embodiments are shown below.
[1] A tobacco sheet for a non-combustion heating type flavor inhaler containing a fibrous material.
[2] The tobacco sheet for a non-combustion heating type flavor inhaler according to [1], wherein the fibrous material accounts for 5 to 50% by mass of 100% by mass of the tobacco sheet.
[3] The non-combustion heated flavor according to [1] or [2], wherein the fibrous material is at least one selected from the group consisting of fibrous pulp, fibrous tobacco material, and fibrous synthetic cellulose. Tobacco sheet for inhaler.
[4] The tobacco sheet for a non-combustion heating type flavor inhaler according to [3], wherein the fibrous material is fibrous pulp.
[5] The tobacco sheet for a non-combustion heating type flavor inhaler according to [4], wherein the tobacco sheet further contains a tobacco raw material.
[6] The method for producing a tobacco sheet for a non-combustion-heating flavor inhaler according to [5], wherein the tobacco raw material is at least one kind of tobacco powder selected from the group consisting of leaf tobacco, backbone and stem.
[7] The tobacco sheet for a non-combustion heating type flavor inhaler according to [5] or [6], wherein the ratio of the tobacco raw material contained in 100% by mass of the tobacco sheet is 30 to 91% by mass.
[8] The tobacco sheet for a non-combustion heating type flavor inhaler according to any one of [4] to [7], further comprising a molding agent.
[9] The tobacco sheet for a non-combustion heating type flavor inhaler according to [8], wherein the molding agent is at least one selected from the group consisting of polysaccharides, proteins and synthetic polymers.
[10] The tobacco sheet for a non-combustion heating type flavor inhaler according to [8] or [9], wherein the proportion of the molding agent contained in 100% by mass of the tobacco sheet is 0.1 to 15% by mass.
[11] The tobacco sheet for a non-combustion-heating flavor inhaler according to any one of [1] to [10], further comprising an aerosol-generating agent.
[12] The tobacco sheet for a non-combustion heating flavor inhaler according to [11], wherein the aerosol generating agent is at least one selected from the group consisting of glycerin, propylene glycol and 1,3-butanediol.
[13] The tobacco sheet for a non-combustion heating type flavor inhaler according to [11] or [12], wherein the ratio of the aerosol generating agent contained in 100% by mass of the tobacco sheet is 5 to 50% by mass.
[14] A non-combustion heating flavor inhaler comprising a tobacco-containing segment including the tobacco sheet for a non-combustion heating flavor inhaler according to any one of [1] to [13].
[15] The non-combustion heating flavor inhaler according to [14];
a heating device for heating the tobacco-containing segment;
A non-combustion heated flavor suction system.

[1A] A tobacco sheet comprising a tobacco material and a binder, wherein at least one surface has an arithmetic mean surface roughness Sa of 5 to 30 μm.
[2A] The sheet of [1A], which is a pressure-molded sheet.
[3A] The sheet according to [1A] or [2A], wherein the binder content is 6% by mass or less in terms of dry mass relative to the dry mass of the tobacco sheet.
[4A] The tobacco sheet according to [1A], wherein both surfaces have an arithmetic mean surface roughness Sa of 5 to 30 μm.
[5A] The sheet according to any one of [1A] to [4A], having a tensile elongation of 5 to 15%.
[6A] A non-combustion heating smoking article comprising the tobacco sheet according to any one of [1A] to [5A] or a material derived therefrom.
[7A] Step 1 of preparing a mixture by kneading at least a tobacco material, a binder and a medium;
step 2 of pressing or extruding the mixture through a die to prepare a wet sheet, and step 3 of drying the wet sheet;
A method for producing a sheet according to any one of [1A] to [5A], comprising:
[8A] The manufacturing method of [7A], wherein the step 2 includes preparing a laminate sheet in which a wet sheet is present between two base films.
[9A] The production method of [7A] or [8A], wherein the step 1 includes kneading at least the tobacco material, the binder and the medium with a single-screw or multi-screw kneader.
[10A] The production method according to any one of [7A] to [9A], wherein the mixture contains 20 to 80% by mass of the medium relative to the total amount of the mixture.

[1B] a tobacco material;
a cellulose derivative having a degree of substitution of 0.65 or more,
cigarette sheet.
[2B] The sheet according to [1B], wherein the degree of substitution is 0.7 or more.
[3B] The sheet according to [2B], wherein the degree of substitution is 0.8 or more.
[4B] The sheet according to any one of [1B] to [3B], wherein the cellulose derivative is carboxyalkylated cellulose.
[5B] The sheet according to any one of [1B] to [4B], having an arithmetic mean surface roughness Sa of 0.03 mm or less.
[6B] The sheet according to any one of [1B] to [5B], which is a pressure-molded sheet.
[7B] Step 1 of preparing a mixture comprising at least a tobacco material, the cellulose derivative, and a vehicle;
step 2 of spreading the mixture on a substrate to prepare a wet sheet, and step 3 of drying the wet sheet;
The method for producing a sheet according to any one of [1B] to [6B].
[8B] The production method according to [7B] or [8B], wherein the step 1 includes kneading the tobacco material, the cellulose derivative, and the medium in a uniaxial or multiaxial kneader.
[9B] The production method of [7B] or [8B], wherein step 2 includes rolling the mixture with a roller or extruding it through a die.
[10B] The manufacturing method of [9B], wherein the step 2 includes preparing a laminate sheet in which a wet sheet is present between two base films.
[11B] A non-combustion heating smoking article comprising the tobacco sheet according to any one of [1B] to [6B] or a material derived therefrom.

1 non-combustion heated flavor inhaler 2 tobacco-containing segment 3 cooling segment 4 center hole segment 5 filter segment 6 mouthpiece segment 7 tubular member 8 perforation 9 second filling layer 10 second inner plug wrapper 11 outer plug wrapper 12 Mouthpiece lining paper 13 Heating device 14 Body 15 Heater 16 Metal tube 17 Battery unit 18 Control unit 19 Recess
20A Tobacco-containing segment 21 Filler 22 Wrapper T Tobacco sheet

Claims (7)

A tobacco sheet for a non-combustion-heating flavor inhaler containing fibrous materials. The sheet according to claim 1, wherein at least one surface has an arithmetic mean surface roughness Sa of 5 to 30 μm. The sheet according to claim 1 or 2, which is a pressure-molded sheet. The sheet according to any one of claims 1 to 3, comprising a cellulose derivative having a degree of substitution of 0.65 or more. The sheet according to claim 4, wherein the degree of substitution is 0.7 or more. A tobacco-containing segment comprising the tobacco sheet for a non-combustion heating type flavor inhaler according to any one of claims 1 to 5,
A non-combustion heated flavor inhaler comprising: The non-combustion heating flavor inhaler according to claim 6;
a heating device for heating the tobacco-containing segment;
A non-combustion heated flavor suction system.

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