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

Abstract

Provided is a tobacco sheet for a non-combustion heating-type flavor inhaler including a tobacco material, wherein a cross-section of the tobacco sheet in the thickness direction has a wavy shape.

Description

[Technical field]

[0001] The present invention relates to a tobacco sheet for a non-combustion heating type flavor inhaler and a manufacturing method thereof, a non-combustion heating type flavor inhaler, and a non-combustion heating type flavor inhalation system. [Background technology]

[0002] In a combustion type flavor inhaler (cigarette), a flavor is obtained by burning a tobacco filler containing tobacco leaves or a tobacco sheet. For example, Patent Document 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, which heats a flavor source such as a tobacco sheet instead of burning it to obtain a flavor. The heating temperature of the non-combustion heating type flavor inhaler is lower than the combustion temperature of the combustion type flavor inhaler, for example, about 400°C or less. Thus, since the heating temperature of the non-combustion heating type flavor inhaler is low, in terms of increasing the amount of smoke, an aerosol generating agent can be added to the flavor source in the non-combustion heating type flavor inhaler. The aerosol generating agent is vaporized by heating to generate an aerosol. The aerosol is supplied to the user together with flavor components such as tobacco components, so that the user can obtain a sufficient flavor.

[0003] The non-combustion heating type flavor inhaler may include, for example, a tobacco-containing segment filled with a tobacco sheet or the like, a cooling segment, and a filter segment. The axial length of the tobacco-containing segment of the non-combustion heating type flavor inhaler is shorter than the axial length of the tobacco-containing segment of a normal combustion type flavor inhaler in relation to the heater. Therefore, in the non-combustion heating type flavor inhaler, a large amount of tobacco sheet is filled in a short section of the tobacco-containing segment in order to ensure the amount of aerosol generated during heating. In order to fill a large amount of tobacco sheet in a short section, a tobacco sheet with low expansion bulk, i.e., high density, is usually used in the non-combustion heating type flavor inhaler. The expansion bulk is a value indicating the volume when a predetermined mass of tobacco sheet shreds is compressed at a constant pressure for a certain time. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Special Publication No. 60-45914 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the present inventors have found that, when considering the heating method, the heating capacity of the heater, and the generation of aerosol, the use of a tobacco sheet with low bulk (high density) increases the total heat capacity of the tobacco-containing segment, and therefore, depending on the heating method and the capacity of the heater, the tobacco sheet filled in the tobacco-containing segment does not contribute sufficiently to the generation of aerosol. In order to solve this problem, it is considered to reduce the total heat capacity of the tobacco-containing segment.

[0006] The present inventors have considered (1) reducing the specific heat of the tobacco raw material contained in the tobacco sheet, and (2) using a tobacco sheet with high expansion volume (low density) in order to reduce the total heat capacity of the tobacco-containing segment. However, since it is difficult to reduce the specific heat of the tobacco raw material itself in (1), it was considered effective to reduce the total heat capacity of the tobacco-containing segment by (2). Therefore, it is desirable to develop a tobacco sheet with high expansion volume (low density) that is suitable for use in a non-combustion heating type flavor inhaler.

[0007] An object of the present invention is to provide a highly expandable tobacco sheet for a non-combustion heating type flavor inhaler, a non-combustion heating type flavor inhaler including the tobacco sheet, and a non-combustion heating type flavor inhalation system. [Means for solving the problem]

[0008] The present invention includes the following embodiments. Aspect 1 A tobacco sheet for a non-combustion heat-type flavor inhaler, comprising a tobacco raw material, the tobacco sheet having a corrugated cross section in a thickness direction. Aspect 2 Density is 1.0g / cm 3 2. The sheet of claim 1, wherein: Aspect 3 3. The sheet of embodiment 1 or 2, which is a pressure-molded sheet. Aspect 4 Moisturizer and Binder and and, The sheet according to any one of aspects 1 to 3, having an air permeability of more than 0 Coresta units. Aspect 5 5. The sheet of embodiment 4, wherein the air permeability is greater than or equal to 500 Coresta units. Aspect 6 A non-combustion heat-type flavor inhaler comprising a tobacco-containing segment including the tobacco sheet for a non-combustion heat-type flavor inhaler according to any one of aspects 1 to 5. Aspect 7 A non-combustion heating type flavor inhaler according to aspect 6; a heating device for heating the tobacco-containing segment; A non-combustion heating type flavor inhalation system comprising: Aspect 8 A method for producing a tobacco sheet for a non-combustion heating-type flavor inhaler according to any one of aspects 1 to 3, comprising: preparing a mixture including a tobacco raw material, an aerosol generating agent, a first molding agent, and a second molding agent; rolling the mixture to form a rolled product; A step of pressing a rotary roll blade against the rolled product to cut it into strips and impart a corrugated shape to the rolled product; A method for providing the above. Aspect 9 A method for producing a tobacco sheet for a non-combustion heating-type flavor inhaler according to aspect 4 or 5, comprising: A step of preparing a mixture including a tobacco raw material, a humectant, a binder, either or both of a flavoring agent and a molding aid, a first molding agent, and a second molding agent; rolling the mixture to form a rolled product; A step of pressing a rotary roll blade against the rolled product to cut it into strips and impart a corrugated shape to the rolled product; A method for providing the above. Effect of the Invention

[0009] According to the present invention, it is possible to provide a highly expandable tobacco sheet for a non-combustion heating type flavor inhaler, a non-combustion heating type flavor inhaler including the tobacco sheet, and a non-combustion heating type flavor inhalation system. [Brief description of the drawings]

[0010] [Figure 1] 1 is a cross-sectional view in the thickness direction showing an example of a tobacco sheet according to the present embodiment. [Diagram 2] FIG. 2 is a cross-sectional view showing an example of a non-combustion heating type flavor inhaler according to the present embodiment. [Diagram 3] FIG. 1 is a cross-sectional view showing an example of a non-combustion heating type flavor inhalation system according to the present embodiment, in which (a) the non-combustion heating type flavor inhaler is in a state before being inserted into a heating device, and (b) the non-combustion heating type flavor inhaler is in a state of being inserted into the heating device and heated. [Figure 4] FIG. 1 illustrates one embodiment of a tobacco segment. [Diagram 5] FIG. 13 is a diagram showing a release profile. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] [Tobacco sheets for non-combustion heating flavor inhalers] The tobacco sheet for a non-combustion heating type flavor inhaler according to this embodiment (hereinafter also referred to as "tobacco sheet") contains tobacco raw materials, and the cross section in the thickness direction of the tobacco sheet has a corrugated shape. Since the cross section in the thickness direction of the tobacco sheet according to this embodiment is corrugated, it is bulky and has high expandability. Therefore, by using the tobacco sheet according to this embodiment, the total heat capacity of the tobacco-containing segment can be reduced, and the tobacco sheet filled in the tobacco-containing segment can be made to contribute sufficiently to aerosol generation. In addition, it is preferable that the tobacco sheet according to this embodiment further contains an aerosol generating agent and one or more molding agents, and by setting the blending ratio of these within a specified range, the expandability of the tobacco sheet is further improved.

[0012] (Tobacco sheet shape) The tobacco sheet according to this embodiment has a corrugated cross section in the thickness direction. That is, when the tobacco sheet according to this embodiment is cut in the thickness direction in a certain direction in the planar direction, the cross section has a corrugated shape. The certain direction in the planar direction may be, for example, the longitudinal direction or the lateral direction of the tobacco sheet. Here, the "corrugated" shape is not particularly limited as long as it is a shape that undulates up and down, and the crests of the waves may be linear or curved. Moreover, the waves may be regular or irregular.

[0013] FIG. 1 shows an example of a cross-sectional shape in the thickness direction of the tobacco sheet according to the present embodiment. The tobacco sheet 1 shown in FIG. 1 has waves 2 in the cross section in the thickness direction. The width w1 of the waves 2 is not particularly limited, but is preferably in the range of 0.1 to 10.0 mm. The height w2 of the waves 2 is not particularly limited, but is preferably in the range of 0.1 to 5.0 mm. The thickness w3 of the tobacco sheet 1 is preferably in the range of 100 to 1000 μm. As shown in FIG. 1, the waves 2 may have a sawtooth shape 3. When the waves 2 have the sawtooth shape 3, the tips of the sawtooth shapes come into contact with each other in the tobacco sheet mixture, so that more voids can be formed, and as a result, the swelling property can be further improved. The size in the planar direction of the tobacco sheet according to the present embodiment is not particularly limited, but can be, for example, a length of 5.0 to 40.0 mm and a width of 0.5 to 2.0 mm.

[0014] (Tobacco raw materials) The tobacco raw material contained in the tobacco sheet according to the present embodiment is not particularly limited as long as it contains tobacco components, and examples thereof include tobacco powder and tobacco extract. Examples of tobacco powder include tobacco leaves, midribs, and stem residues. These may be used alone or in combination of two or more. These can be cut into a predetermined size to be used as tobacco powder. From the viewpoint of further improving the swelling bulk, it is preferable that the size of the tobacco powder is 200 μm or more in the cumulative 90% particle size distribution (D90) in the volume-based particle size distribution measured by dry laser diffraction method. When the tobacco raw material is tobacco powder, the ratio of the tobacco powder contained in 100% by mass of the tobacco sheet is preferably 45 to 95% by mass, more preferably 50 to 93% by mass, and even more preferably 60 to 85% by mass. Examples of tobacco extracts include tobacco extracts obtained by roughly crushing tobacco leaves, mixing and stirring the crushed leaves with a solvent such as water to extract water-soluble components from the tobacco leaves, and then drying and concentrating the obtained water extract under reduced pressure.

[0015] (Aerosol Generator) From the viewpoint of increasing the amount of smoke when heated, the tobacco sheet according to the present embodiment preferably further contains an aerosol generating agent. Examples of the aerosol generating agent include glycerin, propylene glycol, 1,3-butanediol, etc. These may be used alone or in combination of two or more.

[0016] 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 4 to 50% by mass. When the ratio of the aerosol generating agent is 4% by mass or more, sufficient aerosol can be generated when heated in terms of the amount. Furthermore, when the ratio of the aerosol generating agent is 50% by mass or less, sufficient aerosol can be generated when heated in terms of heat capacity. The ratio of the aerosol generating agent is more preferably 6 to 40% by mass, further preferably 8 to 30% by mass, and particularly preferably 10 to 20% by mass.

[0017] (Molding agent) The tobacco sheet according to the present embodiment preferably further comprises a molding agent from the viewpoint of maintaining the shape. The tobacco sheet according to the present embodiment preferably further comprises a first molding agent and a second molding agent, particularly from the viewpoint of sufficiently achieving both the tobacco sheet's aerosol generating agent retention performance and its corrugated shape maintenance performance. Here, the first molding agent and the second molding agent may be of different types, or may be of the same type but different forms. Examples of the first molding agent include polysaccharides, proteins, synthetic polymers, and the like. Examples of polysaccharides include cellulose derivatives and naturally occurring polysaccharides.

[0018] Examples of cellulose derivatives include cellulose ethers such as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxymethylethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl 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; and inorganic acid esters such as cellulose nitrate, cellulose sulfate, cellulose phosphate, and cellulose xanthogenate.

[0019] Examples of naturally occurring polysaccharides include polysaccharides derived from plants such as guar gum, tara gum, roasted bean gum, tamarind seed gum, pectin, gum arabic, tragacanth gum, karaya gum, ghatti gum, arabinogalactan, amas seed gum, cassia gum, psyllium seed gum, and desert mugwort seed gum; polysaccharides derived from algae such as carrageenan, agar, alginic acid, propylene glycol alginate, furcellaran, and velvet extract; polysaccharides derived from microorganisms such as xanthan gum, gellan gum, curdlan, pullulan, Agrobacterium succinoglycan, welan gum, macrophomopsis gum, and rhamsan gum; polysaccharides derived from crustaceans such as chitin, chitosan, and glucosamine; and starches such as starch, sodium starch glycolate, alpha-starch, and dextrin.

[0020] Examples of proteins include cereal proteins such as wheat gluten and rye gluten. Examples of synthetic polymers include polyphosphoric acid, sodium polyacrylate, polyvinylpyrrolidone, etc. The second molding agent may be different from the first molding agent, but may be the same polysaccharides, proteins, synthetic polymers, etc. as the first molding agent.

[0021] When the tobacco sheet contains a first molding agent, the ratio of the first molding agent contained in 100% by mass of the tobacco sheet is preferably 0.1 to 15% by mass. When the ratio of the first molding agent is 0.1% by mass or more, the mixture of raw materials can be easily molded into a sheet. Furthermore, when the ratio of the first molding agent is 15% by mass or less, other raw materials can be sufficiently used to ensure the functions required for the tobacco-containing segment of the non-combustion heating type flavor inhaler. The ratio of the first molding agent is more preferably 0.1 to 12% by mass, even more preferably 0.1 to 10% by mass, and particularly preferably 0.1 to 7% by mass.

[0022] When the tobacco sheet contains a second molding agent, the ratio of the second molding agent contained in 100% by mass of the tobacco sheet is preferably 0.1 to 15% by mass. When the ratio of the second molding agent is 0.1% by mass or more, the mixture of raw materials can be easily molded into a sheet. Furthermore, when the ratio of the second molding agent is 15% by mass or less, other raw materials can be sufficiently used to ensure the functions required for the tobacco-containing segment of the non-combustion heating type flavor inhaler. The ratio of the second molding agent is more preferably 0.1 to 12% by mass, even more preferably 0.1 to 10% by mass, and particularly preferably 0.1 to 7% by mass.

[0023] In addition, when the first and second molding agents are the same type but different in form, for example, the first molding agent can be a powder and the second molding agent can be a solution or slurry. For example, in the tobacco sheet manufacturing method described below, the molding agent can be directly mixed as a powder as the first molding agent, and the molding agent can be dispersed or swollen in a solvent such as water and mixed as the second molding agent. Even in such a method, the same effect as when two different types of molding agents are used can be obtained.

[0024] (Reinforcing agent) The tobacco sheet according to the present embodiment may further contain a reinforcing agent from the viewpoint of further improving the physical properties. Examples of reinforcing agents include fibrous substances such as fibrous pulp and fibrous synthetic cellulose, and liquid substances with a surface coating function that form a film when dried, such as a pectin suspension. These may be used alone or in combination of two or more.

[0025] When the tobacco sheet contains a reinforcing agent, the proportion of the reinforcing agent contained in 100% by mass of the tobacco sheet is preferably 4 to 40% by mass. Within this range, other raw materials can be sufficiently used to ensure the functions required for the tobacco-containing segment of a non-combustion heating-type flavor inhaler. The proportion of the reinforcing agent is more preferably 4.5 to 35% by mass, and even more preferably 5 to 30% by mass.

[0026] (Moisturizer) From the viewpoint of maintaining quality, the tobacco sheet according to the present embodiment may further contain a humectant. Examples of humectants include sugar alcohols such as sorbitol, erythritol, xylitol, maltitol, lactitol, mannitol, and reduced maltose syrup. These may be used alone or in combination of two or more.

[0027] When the tobacco sheet contains a moisturizing agent, the ratio of the moisturizing agent 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 ensure the functions required for the tobacco-containing segment of a non-combustion heating-type flavor inhaler. The ratio of the moisturizing agent is more preferably 2 to 12% by mass, and even more preferably 3 to 10% by mass.

[0028] (Other Ingredients) The tobacco sheet according to the present embodiment may contain, in addition to the tobacco raw material, the aerosol generating agent, the molding agent (first and second molding agents), the reinforcing agent, and the moisturizing agent, flavorings such as fragrances and flavorings, colorants, humectants, preservatives, diluents such as inorganic substances, and the like, as necessary.

[0029] (bulkness) The expansion bulk of the tobacco sheet according to the present embodiment is preferably 190cc / 100g or more. By having the expansion bulk of 190cc / 100g or more, the total heat capacity of the tobacco-containing segment of the non-combustion heating type flavor inhaler can be sufficiently reduced, and the tobacco sheet filled in the tobacco-containing segment can contribute more to aerosol generation. The expansion bulk is more preferably 210cc / 100g or more, and even more preferably 230cc / 100g or more. The upper limit of the expansion bulk range is not particularly limited, but can be, for example, 800cc / 100g or less. The expansion bulk is a value measured by cutting the tobacco sheet into a size of 0.8mm x 20mm, leaving it in a 22°C, 60% humidity conditioned room for 48 hours, and then measuring it with DD-60A (trade name, manufactured by Borgwald). The measurement is performed by placing 15 g of shredded tobacco sheet into a cylindrical container with an inner diameter of 60 mm and compressing it with a load of 3 kg for 30 seconds to determine the volume.

[0030] [Tobacco sheet manufacturing method] Tobacco sheet according to the present embodiment Manufacturing method can include, for example, a step of preparing a mixture containing a tobacco raw material, an aerosol generating agent, a first molding agent, and a second molding agent, a step of rolling the mixture to form a rolled molded product, and a step of pressing a rotary roll blade against the rolled molded product to cut it into strips and impart a corrugated shape to the rolled molded product. The process of imparting a corrugated shape is also called a rippling process. For example, the tobacco sheet according to this embodiment can be manufactured by the following method.

[0031] (1) A step of mixing water, a tobacco raw material, an aerosol generating agent, a first and a second molding agent, and a reinforcing agent to obtain a mixture. (2) A process of feeding the mixture between multiple rollers and rolling it to obtain a rolled product. (3) A process in which a rotating roll blade is pressed against the rolled product to cut it into strips and impart a corrugated shape.

[0032] The sheet cut into strips by the rotary roll blade is given a wave-like shape and a saw-tooth shape as shown in FIG. 1 by applying a resistance force when peeled off from the roll. When the rolled product is not cut by the rotary roll blade, for example, the rolled product on the rolling roller is peeled off with a doctor knife, so that a wave-like shape and a saw-tooth shape can be similarly given. When producing a tobacco sheet by the above method, the surface of the rolling roller may be heated or cooled, and the number of revolutions of the rolling roller may be adjusted according to the purpose. Furthermore, by adjusting the distance between the rolling rollers, a tobacco sheet of a desired basis weight can be obtained.

[0033] [Non-combustion heating type flavor inhaler] The non-combustion heating type flavor inhaler according to the present embodiment includes a tobacco-containing segment including the tobacco sheet according to the present embodiment, etc. Since the non-combustion heating type flavor inhaler according to the present embodiment includes a tobacco-containing segment filled with the highly expandable tobacco sheet according to the present embodiment, the total heat capacity of the tobacco-containing segment can be sufficiently reduced, and the tobacco sheet filled in the tobacco-containing segment can contribute more to aerosol generation.

[0034] An example of a non-combustion heating type flavor inhaler according to this embodiment is shown in Fig. 2. The non-combustion heating type flavor inhaler 4 shown in Fig. 2 includes a tobacco-containing segment 5 filled with a tobacco sheet or the like according to this embodiment, a cylindrical cooling segment 6 having perforations 11 on its circumference, a center hole segment 7, and a filter segment 8. The non-combustion heating type flavor inhaler according to this embodiment may include other segments in addition to the tobacco-containing segment, the cooling segment, the center hole segment, and the filter segment.

[0035] 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, and even more preferably 50 mm or more and 60 mm or less. The circumferential length of the non-combustion heating type 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. The length of the filter segment can be selected within a range of 4 mm or more and 10 mm or less. The airflow resistance of the filter segment at that time is selected to be 15 mmH2O / seg or more and 60 mmH2O / seg or less per segment. These individual segment lengths can be appropriately changed depending on the manufacturing suitability, required quality, etc. Furthermore, even if a center hole segment is not used and only a filter segment is disposed downstream of the cooling segment, it can still function as a non-combustion heating type flavor inhaler.

[0036] (Tobacco-containing segment) The tobacco-containing segment 5 is formed by filling the tobacco sheet according to this embodiment into cigarette paper (hereinafter also referred to as a wrapper). The method for filling the tobacco sheet into the cigarette paper is not particularly limited, and for example, the tobacco sheet may be wrapped in the wrapper, or the tobacco sheet may be filled into a cylindrical wrapper. When the tobacco sheet has a longitudinal direction, such as a rectangular shape, the tobacco sheet may be filled so that the longitudinal direction is in an unspecified direction within the wrapper, or may be filled by aligning the tobacco sheet so that the longitudinal direction is in the axial direction of the tobacco-containing segment 5 or perpendicular to the axial direction.

[0037] (Cooling segment) 2, the cooling segment 6 can be formed of a cylindrical member 10. The cylindrical member 10 may be, for example, a cardboard tube formed into a cylindrical shape.

[0038] The tubular member 10 and the mouthpiece lining paper 15 described later are provided with perforations 11 penetrating both. Due to the presence of the perforations 11, outside air is introduced into the cooling segment 6 during inhalation. As a result, the vaporized components of the aerosol generated by heating the tobacco-containing segment 5 come into contact with the outside air, and as their temperature drops, they are liquefied to form an aerosol. The diameter (distance across) of the perforations 11 is not particularly limited, but may be, for example, 0.5 mm or more and 1.5 mm or less. The number of perforations 11 is not particularly limited, and may be one or two or more. For example, a plurality of perforations 11 may be provided on the circumference of the cooling segment 6.

[0039] The amount of outside air introduced through the perforations 11 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. By setting the ratio of the amount of outside air to 85% by volume or less, it is possible to sufficiently suppress the reduction in flavor due to dilution by the outside air. This is also called the ventilation ratio. From the viewpoint of cooling performance, the lower limit of the range of the ventilation ratio is preferably 55% by volume or more, more preferably 60% by volume or more.

[0040] The cooling segment may also be a segment comprising a sheet of suitable construction material that is crinkled, pleated, gathered or folded. The cross-sectional profile of such an element may exhibit randomly oriented channels. The cooling segment may also comprise a bundle of longitudinally extending tubes. Such a cooling segment may be formed, for example, by wrapping the pleated, gathered or folded sheet material with a paper wrapper.

[0041] The axial length of the cooling segment can be, for example, 7 mm or more and 28 mm or less, for example, 18 mm, and the cooling segment can be substantially circular in its axial cross-sectional shape and have a diameter of, for example, 5 mm or more and 10 mm or less, for example, about 7 mm.

[0042] (Center hole segment) The center hole segment is composed of a filling layer having one or more hollow parts and an inner plug wrapper (inner wrapping paper) that covers the filling layer. For example, as shown in FIG. 2, the center hole segment 7 is composed of a second filling layer 12 having a hollow part and a second inner plug wrapper 13 that covers the second filling layer 12. The center hole segment 7 has a function of increasing the strength of the mouthpiece segment 9. The second filling layer 12 can be, for example, a rod with an inner diameter of φ1.0 mm or more and φ5.0 mm or less, which is densely packed with cellulose acetate fibers and hardened by adding a plasticizer containing triacetin in an amount of 6 mass % or more and 20 mass % or less relative to the mass of cellulose acetate. Since the second filling layer 12 has a high fiber packing density, air and aerosol flow only through the hollow parts during inhalation and hardly flow inside the second filling layer 12. Since the second filling layer 12 inside the center hole segment 7 is a fiber packed layer, the touch from the outside during use is less likely to cause discomfort to the user. It is also possible that the center hole segment 7 does not have the second inner plug wrapper 13 and its shape is maintained by thermoforming.

[0043] (Filter segment) The configuration of the filter segment 8 is not particularly limited, and may be composed of one or more packed layers. The outside of the packed layer may be wrapped with one or more sheets of wrapping paper. The airflow resistance per segment of the filter segment 8 can be appropriately changed depending on the amount, material, etc. of the packing filled in the filter segment 8. For example, when the packing is cellulose acetate fiber, the airflow resistance can be increased by increasing the amount of cellulose acetate fiber filled in the filter segment 8. When the packing is cellulose acetate fiber, the packing density of the cellulose acetate fiber is 0.13 to 0.18 g / cm. 3 The airflow resistance is a value measured using an airflow resistance measuring device (product name: SODIMAX, manufactured by SODIM).

[0044] The circumferential length of the filter segment 8 is not particularly limited, but is preferably 16 to 25 mm, more preferably 20 to 24 mm, and even more preferably 21 to 23 mm. The axial length of the filter segment 8 can be selected from 4 to 10 mm, and is selected so that the airflow resistance is 15 to 60 mmH2O / seg. The axial length of the filter segment 8 is preferably 5 to 9 mm, and more preferably 6 to 8 mm. The cross-sectional shape of the filter segment 8 is not particularly limited, but may be, for example, a circle, an ellipse, a polygon, or the like. In addition, a destructible capsule containing a flavor, flavor beads, or a flavor may be directly added to the filter segment 8.

[0045] As shown in FIG. 2, the center hole segment 7 and the filter segment 8 can be connected by an outer plug wrapper (outer wrapping paper) 14. The outer plug wrapper 14 can be, for example, a cylindrical paper. The tobacco-containing segment 5, the cooling segment 6, and the connected center hole segment 7 and filter segment 8 can be connected by a mouthpiece lining paper 15. These connections can be made, for example, by applying a glue such as a vinyl acetate glue to the inner surface of the mouthpiece lining paper 15, and then wrapping the three segments therein. These segments may be connected in multiple passes using multiple lining papers.

[0046] [Non-combustion heating type flavor inhalation system] The non-combustion heating type flavor inhalation system according to the present embodiment includes a non-combustion heating type flavor inhaler according to the present embodiment and a heating device for heating a tobacco-containing segment of the non-combustion heating type flavor inhaler. The non-combustion heating type flavor inhalation system according to the present embodiment may have other configurations in addition to the non-combustion heating type flavor inhaler according to the present embodiment and the heating device.

[0047] An example of the non-combustion heating type flavor inhalation system according to this embodiment is shown in Fig. 3. The non-combustion heating type flavor inhalation system shown in Fig. 3 includes a non-combustion heating type flavor inhaler 4 according to this embodiment and a heating device 16 that heats the tobacco-containing segment of the non-combustion heating type flavor inhaler 4 from the outside.

[0048] FIG. 3(a) shows the state before the non-combustion heating type flavor inhaler 4 is inserted into the heating device 16, and FIG. 3(b) shows the state after the non-combustion heating type flavor inhaler 4 is inserted into the heating device 16 and heated. The heating device 16 shown in FIG. 3 includes a body 17, a heater 18, a metal tube 19, a battery unit 20, and a control unit 21. The body 17 has a cylindrical recess 22, and the heater 18 and the metal tube 19 are disposed on the inner side of the recess 22 at a position corresponding to the tobacco-containing segment of the non-combustion heating type flavor inhaler 4 inserted into the recess 22. The heater 18 can be an electric resistance heater, and is heated by being supplied with power from the battery unit 20 in response to an instruction from the control unit 21 that controls the temperature. The heat generated by the heater 18 is transferred to the tobacco-containing segment of the non-combustion heating type flavor inhaler 4 through the metal tube 19, which has high thermal conductivity.

[0049] 3(b) is a schematic illustration, and therefore there is a gap between the outer periphery of the non-combustion heating type flavor inhaler 4 and the inner periphery of the metal tube 19, but in reality, for the purpose of efficient heat transfer, it is preferable that there is no gap between the outer periphery of the non-combustion heating type flavor inhaler 4 and the inner periphery of the metal tube 19. Note that although the heating device 16 heats the tobacco-containing segment of the non-combustion heating type flavor inhaler 4 from the outside, it may also heat from the inside.

[0050] The heating temperature by the heating device is not particularly limited, but is preferably 400° C. or lower, more preferably 150° C. or higher and 400° C. or lower, and even more preferably 200° C. or higher and 350° C. or lower. The heating temperature refers to the temperature of the heater of the heating device.

[0051] The inventors have found that high response in the early stage of puffing, i.e., sufficient delivery of flavor components in the early stage of puffing, increases the satisfaction of use. Furthermore, the air permeability of conventional tobacco sheets is zero or very low. In order to control the release of components from these sheets, for example, the sheet has been rolled to change the amount of composition filled, or the density of the composition has been changed. However, these conventional methods have the drawback that there are limits to the amount of filling and density in order to maintain the rolled shape, and the applicable range in product design is narrow. Therefore, the present invention includes a tobacco sheet (first embodiment) that has high swelling and high satisfaction of use, and a tobacco sheet (second embodiment) that has high swelling and can achieve an excellent profile. These embodiments will be described below.

[0052] [First aspect] As a first embodiment, a tobacco sheet having high swelling and improved user satisfaction will be described. 3 It has the following density:

[0053] (1) Binder The binder is one of the aforementioned molding agents, and is an adhesive for binding tobacco powders together or between tobacco powder and other components. In this embodiment, a known binder can be used. Examples of such binders include polysaccharides such as guar gum and xanthan gum, and cellulose derivatives such as CMC (carboxymethylcellulose), CMC-Na (sodium salt of carboxymethylcellulose), and HPC (hydroxypropylcellulose). The upper limit of the binder content is preferably 6% by mass or less in terms of dry mass (mass excluding water mixed in, the same applies below) relative to the dry mass of the tobacco sheet, and the lower limit is preferably 1% by mass or more, more preferably 3% by mass or more. If the amount of the binder exceeds the upper limit or is less than the lower limit, the above-mentioned effect may not be fully achieved.

[0054] Binders that can be 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.

[0055] 1) Polysaccharides 1-1) Cellulose derivatives [Cellulose ethers] Methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxymethylethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, benzyl cellulose, trityl cellulose, cyanoethyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, aminoethyl cellulose [Cellulose esters] Organic acid esters: cellulose acetate, cellulose formate, cellulose propionate, cellulose butyrate, cellulose benzoate, cellulose phthalate, cellulose tosyl Inorganic acid esters: cellulose nitrate, cellulose sulfate, cellulose phosphate, cellulose xanthogenate

[0056] 1-2) Naturally derived polysaccharides [Plant-derived] Guar gum, Tara gum, Roasted bean gum, Tamarind seed gum, Pectin, Gum arabic, Tragacanth gum, Karaya gum, Gatti gum, Arabinogalactan, Amas seed gum, Cassia gum, Psyllium seed gum, Artemisia seed gum [Algae derived] Carrageenan, agar, alginic acid, propylene glycol alginate, furcellan, fukuronori extract [Microbial origin] Xanthan gum, Gellan gum, Curdlan, Pullulan, Agrobacterium succinoglycan, Welan gum, Macrophomopsis gum, Rhamsan gum [Crustacean origin] Chitin, chitosan, glucosamine [Starches] Starch, sodium starch glycolate, pregelatinized starch, dextrin

[0057] 2) Protein Wheat gluten, rye gluten

[0058] 3) Synthetic polymers Polyphosphoric acid, sodium polyacrylate, polyvinylpyrrolidone

[0059] (2) Aerosol generators In this embodiment, a known aerosol generating agent can also be used, examples of which include polyhydric alcohols such as glycerin and propylene glycol (PG), triethyl citrate (TEC), triacetin, and the like, which have a boiling point of over 100° C. 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, in terms of dry mass (mass excluding mixed water, the same applies below). If the amount of the aerosol generating agent exceeds the upper limit, it may be difficult to manufacture the tobacco sheet, and if it is less than the lower limit, the smoke sensation may be reduced.

[0060] (4) Emulsifier In this embodiment, the tobacco sheet may contain an emulsifier. The emulsifier enhances the affinity between the lipophilic aerosol generating agent and the hydrophilic tobacco material. Thus, the addition of an emulsifier is effective, particularly when a lipophilic aerosol generating agent is used. Any 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, based on 100 parts by mass of the tobacco sheet, in terms of dry mass.

[0061] (5) Textiles The tobacco sheet in this embodiment may not contain tobacco-derived fibers and fibers derived from materials other than tobacco (e.g., cellulose). In this case, it is possible to avoid undesirable effects on the smoking taste, such as unpleasant flavors, caused by these fibers. However, since it is not realistic to completely eliminate fibers, the amount of the fibers in the tobacco sheet is preferably 1.0 mass %, more preferably 0.5 mass %, on a dry mass basis. In addition, the tobacco sheet in this embodiment may contain tobacco-derived fibers or fibers derived from materials other than tobacco in a total amount of 0.5 to 2.0 mass %. In this case, the strength of the tobacco sheet is improved by the fibers, and the tobacco sheet has an excellent balance between the smoking taste and strength. The tobacco-derived fibers refer to pulp made by beating tobacco raw materials using a grinder or the like, and are different from the tobacco materials described above.

[0062] (6)Fragrance In this embodiment, the tobacco sheet may contain a flavoring. A flavoring is a substance that provides an aroma or flavor. The flavoring may be a natural flavoring or a synthetic flavoring. A single type of flavoring may be used as the flavoring, or a mixture of multiple types of flavorings may be used. Any flavoring that is generally used in smoking articles may be used as the flavoring, and specific examples will be described later. The flavoring may be contained in the sheet for smoking articles in an amount that allows the smoking article to provide a preferred aroma and flavor, and for example, the amount is preferably 1 to 30% by mass, more preferably 2 to 20% by mass in the tobacco sheet.

[0063] The type of the fragrance is not particularly limited, and from the viewpoint of imparting a good fragrance sensation, the following may be used: acetanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise oil, apple juice, balsam of Peru oil, beeswax absolute, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil, carob absolute, β-carotene, carrot juice, L-carvone, β-caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, cinnamyl alcohol, cinnamyl cinnamate, citronella oil, DL-citronella, citronella oleracea ... lonerol, clary sage extract, cocoa, coffee, konjac oil, coriander oil, cumin aldehyde, davana oil, delta-decalactone, gamma-decalactone, decanoic acid, dill herb oil, 3,4-dimethyl-1,2-cyclopentanedione, 4,5-dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 3,7-dimethyl-6-octenoic acid, 2,3-dimethylpyrazine, 2,5-dimethylpyrazine, 2,6-dimethylpyrazine, ethyl 2-methylbutyrate, ethyl acetate, ethyl butyrate, ethyl hexanoate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl octanoate, ethyl oleate, ethyl palmitate, ethyl phenylacetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin, ethyl vanillin glucoside, 2-ethyl-3,(5 or 6)-Dimethylpyrazine, 5-ethyl-3-hydroxy-4-methyl-2(5H)-furanone, 2-ethyl-3-methylpyrazine, eucalyptol, fenugreek absolute, gene absolute, gentian root infusion, geraniol, geranyl acetate, grape juice, guaiacol, guava extract, gamma-heptalactone, gamma-hexalactone, hexanoic acid, cis-3-hexen-1-ol, hexyl acetate, hexyl alcohol, phenylhexyl acetate, honey, 4-hydroxy-3-pentenoic acid, la , 4-Hydroxy-4-(3-hydroxy-1-butenyl)-3,5,5-trimethyl-2-cyclohexen-1-one, 4-(para-hydroxyphenyl)-2-butanone, Sodium 4-Hydroxyundecanoate, Immortelle Absolute, β-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, Robe Dioscorea officinalis root oil, maltol, maple syrup, menthol, menthone, L-menthyl acetate, paramethoxybenzaldehyde, methyl 2-pyrrolyl ketone, methyl anthranilate, methyl phenylacetate, methyl salicylate, 4'-methylacetophenone, methylcyclopentenolone, 3-methylvaleric acid, mimosa absolute, tsammi fruit, myristic acid, nerol, nerolidol, gamma-nonalactone, nutmeg oil, delta-octalactone, octanal, octanoic acid, orange flower oil, orange oil, orris root oil, palmitic acid, omega-pentadecane Calactone, Peppermint Oil, Petitgrain Paraguay Oil, Phenethyl Alcohol, Phenethyl Phenylacetate, Phenylacetic Acid, Piperonal, Plum Extract, Propylguaethol, 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, Alpha-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, gamma-undecalactone, gamma-valerolactone, vanilla extract, vanillin, veratraldehyde, violet leaf absolute, N-ethyl-p -menthane-3-carboxamide (WS-3), ethyl-2-(p-menthane-3-carboxamide) acetate (WS-5), sugar (sucrose, fructose, etc.), cocoa powder, carob powder, coriander powder, licorice powder, orange peel powder, rose pip powder, chamomile flower powder, lemon verbena powder, peppermint powder, leaf powder, spearmint powder, black tea powder, natural plant flavors (e.g., jasmine oil, lemon oil, vetiver oil, lovage oil), esters (e.g., menthyl acetate, isoamyl propionate, etc.), alcohols (e.g., phenylethyl alcohol, cis-6-nonen-1-ol, etc.). These flavors may be used alone or in combination of two or more.

[0064] (7) Characteristics and form of tobacco sheets 1) Density The tobacco sheet of this embodiment has a viscosity of 1.0 g / cm 3 The tobacco sheet has a density of 0.95 g / cm or less. A tobacco sheet having such a low density can achieve sufficient delivery of flavor components at the initial stage of puffing. The reason for this is not limited, but it is presumed that a low-density tobacco sheet can reduce the packing density of the tobacco filler in the smoking article, thereby increasing the amount of heat received per mass. Furthermore, a reduction in packing density can also achieve cost reduction. From these perspectives, the density is preferably 0.95 g / cm. 3 Less than or equal to 0.75 g / cm 3The lower limit of the density is not limited, but from the viewpoint of strength, etc., it is preferably 0.5 g / cm 3 That is all. In the present invention, the density is calculated from the basis weight (mass per unit area) and the thickness. The air permeability of the tobacco sheet of this embodiment is preferably 0 Coresta units.

[0065] 2) Thickness The thickness of the tobacco sheet is not limited, but the upper limit is preferably 1500 μm or less, more preferably 1000 μm or less, and even more preferably 500 μm or less, and the lower limit is preferably 20 μm or more, more preferably 100 μm or more, and even more preferably 150 μm or more.

[0066] (8) Tobacco segment From the tobacco sheet, a tobacco segment for use in a smoking article can be manufactured. In one embodiment, the tobacco segment comprises a cylindrical wrapper, and a tobacco sheet is spirally packed in the wrapper (see FIG. 4(A)). In the figure, 200A is the tobacco segment, T is the tobacco sheet, and 220 is the wrapper, which is usually paper. The tobacco segment is preferably rod-shaped, and its length can be about 15 to 80 mm, and its diameter can be about 5 to 10 mm. Furthermore, the tobacco segment 200A shown in FIG. 4(A) can be cut to have an aspect ratio (length / diameter) of about 0.5 to 1.2 (see FIG. 4(B)).

[0067] In another embodiment, the tobacco segment 200A comprises a cylindrical wrapper 220, and a tobacco sheet T folded and packed inside the wrapper. The ridges generated by the folding are approximately parallel to the longitudinal direction of the segment (see FIG. 4(C)). The tobacco segment 200A is preferably rod-shaped, and may have a length of about 15 to 80 mm and a diameter of about 5 to 10 mm. In this embodiment, it is preferable that the tobacco sheet T has been subjected to a surface wrinkling process such as pleating or crimping in advance.

[0068] In another embodiment, the tobacco segment 200A comprises a cylindrical wrapper 220, and cut pieces of the tobacco sheet T are filled in the wrapper (see FIG. 4(D)). The tobacco segment 200A is preferably rod-shaped, and may have a length of about 15 to 80 mm and a diameter of about 5 to 10 mm. The size of the cut pieces is not limited, but may be, for example, about 2 to 20 mm in length on the longest side and about 0.5 to 1.5 mm in width.

[0069] In another embodiment, the tobacco segment 200A includes a cylindrical wrapper 220 and strand-type shreds filled in the wrapper (see FIG. 4(E)). The strand-type shreds are filled so that their longitudinal direction is approximately parallel to the longitudinal direction of the wrapper 220. The width of the strand-type shreds may be about 0.5 to 1.5 mm.

[0070] In another embodiment, the tobacco segment 200A includes a tubular wrapper 220 and a tobacco shred filler randomly packed within the wrapper. The tobacco shred is cut and is different from strand-type shred.

[0071] [Manufacturing method] The tobacco sheet in this embodiment may be produced by any method, but is preferably produced by a method comprising the following steps. Step 1 comprises kneading at least a tobacco raw material, a binder, and a medium to prepare a mixture. Step 2: spreading or extruding the mixture through a die to prepare a wet sheet. Step 3: drying the wet wipes. A sheet formed by applying pressure in this manner is called a "pressure-formed sheet", and as described below, "pressure-formed sheets" include "laminated sheets" and "extruded sheets". A laminated sheet is a sheet obtained by pressing a mixture with a roller one or more times to a target thickness and then drying to a target moisture content. An extruded sheet is a sheet obtained by extruding a mixture through a T-die or the like to a target thickness and then drying to a target moisture content. In a pressure-formed sheet, pressing and extrusion may be combined. For example, the mixture may be extruded and then further pressed to form a sheet.

[0072] (1) Process 1 In this process, the tobacco raw material, the binder, and the medium are kneaded together. If necessary, an aerosol generating agent, an emulsifier, or a flavoring can also be added. The amount of each component is adjusted so as to achieve the aforementioned amount. The medium is preferably mainly composed of a water-soluble organic solvent having a boiling point of less than 100°C, such as water or ethanol, and is more preferably water or ethanol.

[0073] This step can be carried out by kneading the components, but is preferably carried out through 1) grinding the raw material (eg, single leaves), 2) preparing a wet powder, and 3) kneading. 1) Crushing It is preferable to crush the raw material and then finely grind it using a grinder (e.g., ACM-5, manufactured by Hosokawa Micron). The particle size D90 after fine grinding is preferably 20 to 1000 μm. The particle size is measured using a laser diffraction type particle sizer such as Mastersizer (manufactured by Malvern).

[0074] 2) Preparation of wet powder The ground tobacco raw material is mixed with a binder and, if necessary, additives such as flavorings and lipids. This mixing is preferably a dry blend, and therefore a mixer is preferably used as a mixer. Next, a medium such as water and, if necessary, an aerosol generating agent 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, but may be appropriately adjusted in step 2. adjustment For example, when compression is performed in step 2, the amount of the medium can be 20 to 50% by mass, and when extrusion is performed, the amount can be 20 to 80% by mass. The solid content concentration of the wet powder is preferably 50 to 90% by mass. In a particularly preferred embodiment, a wet powder is used that contains tobacco particles having a D90 of 200 μm or more and a liquid medium containing water (more preferably a liquid medium consisting of water), and has a moisture content of 50% by mass or more.

[0075] 3) Mixing The wet powder is kneaded using a kneader (e.g., DG-1 manufactured by Dalton Co., Ltd.) Kneading is preferably carried out until the medium is distributed throughout the mixture, for example, until the color of the mixture is visually uniform.

[0076] (2) Process 2 In this step, the mixture (wet powder) is pressed or extruded through a die to prepare a wet sheet. For example, the mixture is sandwiched between two substrate films and passed through a pair of rollers using a calendaring device (e.g., manufactured by Yuri Roll Machine Co., Ltd.) until a predetermined thickness (more than 100 μm) is reached, and pressed to obtain a laminate in which a wet sheet is present between two substrate films. As the substrate film, a non-adhesive film such as a fluorine-based polymer film is preferred. Pressing with a roller can be performed multiple times. In addition, the mixture (wet powder) can be extruded through a die (preferably a T-die) with a predetermined gap to form a wet sheet on the substrate. As the substrate, known materials such as a glass plate, a metal plate, and a plastic plate can be used. A known extruder can be used for extrusion.

[0077] (3) Process 3 In this step, the wet sheet is dried. For example, in lamination, this step can be carried out by the following procedure. 1) One of the substrate films is peeled off. 2) The laminate is dried using a ventilated dryer. The drying temperature may be room temperature, but is preferably 50 to 100°C, and the drying time can be 1 to 2 minutes. 3) Next, the remaining substrate film is peeled off, and the tobacco sheet is obtained by further drying under the above conditions. By drying in this manner, it is possible to prevent the tobacco sheet from adhering to other substrates. The tobacco sheet obtained in this manner is also called a "laminate sheet". The laminate sheet has a smooth surface, which is preferable because it can suppress the occurrence of chipping when it comes into contact with other members. In addition, this method is suitable for producing a sheet of 300 μm or less.

[0078] In the case of extrusion molding, the wet sheet on the substrate is dried by air drying or heating. The drying conditions are as described above. The tobacco sheet obtained in this manner is also called an "extruded sheet." Extruded sheets are preferable because they have a smooth surface and can prevent chipping when they come into contact with other materials. This method is suitable for producing sheets with a thickness of 200 μm or more.

[0079] [Second aspect] As a second aspect, a tobacco sheet having high swelling and excellent profile is described. The tobacco sheet in this aspect includes a tobacco raw material, a humectant, a binder, and either or both of a flavoring agent and a molding aid, and has an air permeability of more than 0 Coresta units.

[0080] (1) Moisturizer The humectant in this embodiment is a material for imparting moisture to the tobacco sheet, but is also the aerosol generator that vaporizes when heated and cools to generate an aerosol, or that generates an aerosol by atomization. Examples of the humectant in this embodiment include polyhydric alcohols such as glycerin or propylene glycol (PG); and triesters such as triethyl citrate (TEC) or triacetin. The humectant in this embodiment preferably has a boiling point of more than 100°C. The amount of the humectant in the tobacco sheet is preferably 1 to 40% by mass, more preferably 10 to 20% by mass, in terms of dry mass (mass excluding water mixed in, the same applies below). If the amount of the humectant exceeds the upper limit, it may be difficult to manufacture the tobacco sheet, and if it is less than the lower limit, the smoke sensation may be reduced.

[0081] (2) Binder In this embodiment, the binders described in the first embodiment can be used.

[0082] (3) Flavoring agents The flavoring agent is a material that imparts flavor, and is preferably a fragrance. As the fragrance, those mentioned above can be used.

[0083] (4) Aerosol generators In this embodiment, the tobacco sheet may include an aerosol generating agent as described in the first embodiment.

[0084] (5) Molding aids The molding aid in this embodiment includes pulp or nonwoven fabric of vegetable fiber or synthetic fiber, more specifically, fiber derived from tobacco or fiber derived from a material other than tobacco. The amount of the molding aid added is preferably 0.5 to 2.0 mass% in the tobacco sheet. The tobacco sheet in this embodiment may contain either a flavoring agent or a molding aid, but when the molding aid is contained, specifically, the strength of the sheet can be ensured, the adhesion of the sheet can be reduced, and the like, and when a flavoring is contained, the molding aid can support the flavoring, etc., so that the sheet can improve its support power for the flavoring, etc.

[0085] 1) Breathability The tobacco sheet of this embodiment has an air permeability of more than 0 Coresta units, preferably 50 Coresta units or more, 100 Coresta units or more, 200 Coresta units or more, 300 Coresta units or more, or 400 Coresta units or more, and more preferably 500 Coresta units or more. There is no upper limit, but it is preferably 20,000 Coresta units or less, and more preferably 15,000 Coresta units or less. A Coresta unit is defined as a pressure drop of 1 cm under a differential pressure of 1 kPa. 2 Air flow rate (cm) per minute 3 ) The air permeability can be measured using an air permeability meter PPM1000M manufactured by Cerulean. In the present invention, the air permeability is preferably measured by the following procedure. 1) The sheet is left to stand for 48 hours under conditions of room temperature of 22°C and relative humidity of 60% to condition it. 2) Next, this sheet is cut into a size of 40 mm x 240 mm, and measured using an air permeability measuring device (PPM1000M manufactured by Cerulean) with a differential pressure of 1 kPa and a measuring head of a circular shape of 2 cm. 2 The amount of air passing through from the front surface to the back surface is measured. 3) The measurement environment is room temperature (e.g. 22°C) and a relative humidity of 60%.

[0086] In this embodiment, since a tobacco sheet having a specific air permeability is used, an initial profile can be achieved. Specifically, a profile can be achieved in which a higher delivery can be achieved in the initial puff than with a conventional sheet, and the delivery amount is less likely to decrease in the latter half of the puff, similar to that of a conventional sheet. The reason for this is not limited, but it is presumed that the high air permeability of the sheet increases the release efficiency of the moisturizing agent from the sheet, thereby increasing the amount of aerosol formed from the moisturizing agent.

[0087] 2) Thickness The thickness of the tobacco sheet in this embodiment is not limited, but in one embodiment, it is preferably 20 to 2000 μm, more preferably 100 to 1500 μm, and even more preferably 100 to 1000 μm.

[0088] 3) Density The tobacco sheet of this embodiment preferably has a density of 0.5 to 2.0 g / cm 3 and more preferably has a density of 0.5 to 1.0 g / cm 3 As described below, the tobacco sheet of this embodiment preferably has holes that are provided physically or chemically, but the density here does not refer to the density of the portion excluding the holes, but to the density of the entire sheet including the holes. 3 When the density is as follows, a more sufficient delivery of flavor components can be achieved at the initial stage of inhalation.

[0089] 4) Hole As described above, the tobacco sheet of this embodiment preferably has holes provided by processing. The holes can be provided by physical processing or chemical processing. Examples of the former include laser processing, cutting processing using a needle or the like, and electrical perforation by localized discharge. Examples of the latter include etching. The shape of the holes is not limited, and may be a circle, an ellipse, a polygon, or the like, and the holes are preferably through holes. The size, number, and arrangement of the holes are appropriately adjusted so as to achieve a desired degree of air permeability. In one embodiment, the size of the holes is such that the diameter of the circumscribed circle is 0.1 to 0.8 mm. In another embodiment, the holes are arranged in a lattice pattern on the sheet, and the shortest distance between adjacent holes is about 0.2 to 0.8 mm.

[0090] (6) Tobacco segment From the tobacco sheet, tobacco segments for use in smoking articles can be produced. The tobacco segments in this embodiment are as described in the first embodiment.

[0091] [Manufacturing method] The tobacco sheet in this embodiment may be produced by any method, but is preferably produced by a method comprising the following steps. Step 1: preparing a mixture by kneading at least a tobacco raw material, a humectant, a binder, and either or both of a flavoring agent and a molding aid, and a medium. The binder may be a first molding agent or a second molding agent. Step 2: spreading or extruding the mixture through a die to prepare a wet sheet. Step 3: drying the wet wipes. A sheet formed by applying pressure in this manner is called a "pressure-formed sheet", and as described below, "pressure-formed sheets" include "laminated sheets" and "extruded sheets". A laminated sheet is a sheet obtained by pressing a mixture with a roller one or more times to a target thickness and then drying to a target moisture content. An extruded sheet is a sheet obtained by extruding a mixture through a T-die or the like to a target thickness and then drying to a target moisture content. In a pressure-formed sheet, pressing and extrusion may be combined. For example, the mixture may be extruded and then further pressed to form a sheet.

[0092] (1) Process 1 In this process, at least the tobacco raw material, the humectant, the binder, and either or both of the flavoring agent and the molding aid, and the medium are kneaded. If necessary, an emulsifier can be added. The blending amount of each component is adjusted so as to achieve the aforementioned amount. The medium is preferably mainly composed of a water-soluble organic solvent having a boiling point of less than 100°C, such as water or ethanol, and is more preferably water or ethanol.

[0093] This step can be carried out by kneading the components, but is preferably carried out through 1) grinding the raw material (eg, single leaves), 2) preparing a wet powder, and 3) kneading. 1) Crushing It is preferable to crush the raw material coarsely and then finely grind it using a grinder (e.g., ACM-5, manufactured by Hosokawa Micron). The particle size D90 of the tobacco raw material after fine grinding is as described above. It is preferably 20 to 1000 μm. The particle size is measured using a laser diffraction type particle sizer such as Mastersizer (manufactured by Malvern).

[0094] 2) Preparation of wet powder The tobacco raw material, the binder, and either or both of the flavoring agent and the molding aid, and additives such as lipids are added as necessary and mixed. Since this mixing is preferably a dry blend, it is preferable to use a mixer as a mixer. Next, a medium such as water and a humectant 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, but is appropriately adjusted in step 2. For example, when compression is performed in step 2, the amount of the medium can be 20 to 50% by mass, and when extrusion is performed, the amount can be 20 to 80% by mass. The solid content concentration of the wet powder is preferably 50 to 90% by mass.

[0095] 3) Mixing The wet powder is kneaded using a kneader (e.g., DG-1 manufactured by Dalton Co., Ltd.) Kneading is preferably carried out until the medium is distributed throughout the mixture, for example, until the color of the mixture is visually uniform.

[0096] (2) Process 2 In this step, the mixture (wet powder) is pressed or extruded through a die to prepare a wet sheet. For example, the mixture is sandwiched between two substrate films and passed through a pair of rollers using a calendaring device (e.g., manufactured by Yuri Roll Machine Co., Ltd.) until a predetermined thickness (more than 100 μm) is reached, and pressed to obtain a laminate in which a wet sheet is present between two substrate films. As the substrate film, a non-adhesive film such as a fluorine-based polymer film is preferred. Pressing with a roller can be performed multiple times. In addition, the mixture (wet powder) can be extruded through a die (preferably a T-die) with a predetermined gap to form a wet sheet on the substrate. As the substrate, known materials such as a glass plate, a metal plate, and a plastic plate can be used. A known extruder can be used for extrusion.

[0097] (3) Process 3 In this step, the wet sheet is dried. For example, in lamination, this step can be carried out by the following procedure. 1) One of the substrate films is peeled off. 2) The laminate is dried using a ventilated dryer. The drying temperature may be room temperature, but is preferably 50 to 100°C, and the drying time can be 1 to 2 minutes. 3) Next, the remaining substrate film is peeled off, and the tobacco sheet is obtained by further drying under the above conditions. By drying in this manner, it is possible to prevent the tobacco sheet from adhering to other substrates. The sheet obtained in this manner is also called a "laminate sheet". The laminate sheet has a smooth surface, which is preferable because it can suppress the occurrence of chipping when it comes into contact with other members. In addition, this method is suitable for producing a sheet of 300 μm or less.

[0098] In the case of extrusion molding, the wet sheet on the substrate is dried by air drying or heating. The drying conditions are as described above. The tobacco sheet obtained in this manner is also called an "extruded sheet." Extruded sheets are preferable because they have a smooth surface and can prevent chipping when they come into contact with other materials. This method is suitable for producing sheets with a thickness of 200 μm or more.

[0099] In addition, tobacco sheets can also be produced by a papermaking method, a casting method, a nonwoven fabric coating method, etc. The papermaking method is a method in which a mixture containing tobacco raw materials, a humectant, a binder, either or both of a flavoring agent and a molding aid, and water is made into paper and dried to produce a sheet. However, since the mixture must contain a fibrous substance, it is preferable that the mixture contains pulp as a fiberized tobacco raw material or a molding aid. The water extract extracted before the tobacco raw material is fiberized can be concentrated later and applied back to the paper-made sheet. A sheet produced by this method is called a paper-made sheet.

[0100] The casting method is a method in which a mixture containing tobacco raw material, a humectant, a binder, and either or both of a flavoring agent and a molding aid is spread (cast) onto a substrate and dried to produce a sheet. The mixture may contain a molding aid and a medium such as water as necessary. A sheet produced by this method is called a cast sheet.

[0101] The nonwoven fabric coating method is a method for producing a sheet by applying a mixture containing tobacco raw material, a humectant, a binder, and either or both of a flavoring agent and a molding aid to a nonwoven fabric. A sheet produced by this method is called a nonwoven fabric sheet. EXAMPLES

[0102] Specific examples of this embodiment will be described below, but the present invention is not limited to these.

[0103] [Example 1] Tobacco lamina (tobacco leaves) was dry-milled using a Hosokawa Micron ACM machine to obtain tobacco powder. The cumulative 90% particle size (D90) of the volume-based particle size distribution measured by dry laser diffraction method using a Mastersizer (product name, manufactured by Malvern Panalytical Division, Spectris Co., Ltd.) was measured and found to be 200 μm.

[0104] A tobacco sheet was produced using the tobacco powder as a tobacco raw material. Specifically, 70 parts by mass of the tobacco raw material, 12 parts by mass of glycerin as an aerosol generating agent, 4 parts by mass of powdered carboxymethylcellulose as a first molding agent, 1 part by mass of carboxymethylcellulose swollen with water as a second molding agent, 5 parts by mass of fibrous pulp as a reinforcing agent, and 8 parts by mass of cocoa powder as a flavoring were mixed and kneaded in an extrusion molding machine. The kneaded mixture was molded into a sheet shape using two pairs of metal rolls to obtain a rolled molded product. A rotary noodle-making roll blade was pressed against the rolled molded product, and the product was cut into strips while being given a wave-shaped shape. The product was further cut to a length of 20 mm and dried to obtain a tobacco sheet with a length of 20 mm and a width of 0.8 mm. The cross section of the tobacco sheet in the thickness direction had a cross-sectional shape as shown in FIG. 1.

[0105] The swelling property of the obtained tobacco sheet was measured. Specifically, the tobacco sheet was left in a 22°C, 60% humidity conditioned room for 48 hours, and then the swelling property was measured using DD-60A (product name, manufactured by Borgwald). The measurement was performed by placing 15 g of the tobacco sheet in a cylindrical container with an inner diameter of 60 mm, and compressing it for 30 seconds with a load of 3 kg to determine the volume. The results are shown in Table 1. In Table 1, the swelling property is shown as the increase rate (%) of the swelling property relative to the standard value, which is based on the value of the swelling property of Comparative Example 1 described later.

[0106] [Comparative Example 1] A rolled product was produced in the same manner as in Example 1. It was then cut into strips using multiple ring-shaped rotary blades. It was further cut to a length of 20 mm to obtain a tobacco sheet with no corrugated shape, length: 20 mm, width: 0.8 mm. The swelling property of the obtained tobacco sheet was measured in the same manner as in Example 1. The results are shown in Table 1.

[0107] [Table 1]

[0108] As can be seen from Table 1, the tobacco sheet of Example 1, which is the tobacco sheet according to this embodiment, had improved swelling property compared to the tobacco sheet of Comparative Example 1, which was not corrugated.

[0109] Below are reference examples A and Visit Thoughts Comparative Example A will be used to explain the first embodiment. [Reference example A1] Tobacco leaves were ground using a grinder (ACM-5, manufactured by Hosokawa Micron) to obtain leaf tobacco particles with a D90 of 400 μm. D90 was measured using 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. Next, glycerin as an aerosol generating agent and water as a medium were added to the dry blend, and the mixture was mixed in a mixer to prepare a wet powder. The composition of each component is shown in Table A1.

[0110] The wet powder was kneaded six times at room temperature using a kneader (DG-1, manufactured by Dalton Co., Ltd.) to obtain a mixture. The die shape was circular and rectangular, and the screw rotation speed was 60 rpm.

[0111] The wet powder was sandwiched between two Teflon (registered trademark) films (NITOFLON (R) No. 900UL manufactured by Nitto Denko Corporation) and rolled in four stages using a calendaring device (manufactured by Yuri Roll Machinery Co., Ltd.) until the desired thickness (more than 100 μm) was reached, to prepare a 250 μm-thick laminate having a layered structure of film / wet sheet / film. The roll gaps of the first to fourth stages were 1100 μm, 500 μm, 300 μm, and 200 μm, respectively. The roll gap of the fourth stage was thicker than the thickness of the final sheet obtained, because the sheet released from the pressure between the rollers expanded to near the final thickness.

[0112] One Teflon (registered trademark) film was peeled off from the laminate, and the sheet was dried for 1 to 2 minutes at 80° C. using a forced air dryer. The other film was then peeled off, and the wet sheet was dried under the same conditions to produce the tobacco sheet of this embodiment, which was then evaluated.

[0113] [Table A1]

[0114] In the wet powder mass in Table A1, the amounts of ground tobacco leaf, glycerin, and binder indicate the amount of dry matter, and the amount of water indicates the total amount of the charged mass and the amount of water contained in the ground tobacco leaf, glycerin, and binder.

[0115] [Reference examples A2, A3] Tobacco sheets were produced and evaluated in the same manner as in Reference Example A1, except that leaf tobacco particles having a D90 of 600 μm and 800 μm, respectively, were used.

[0116] [Reference comparative examples A1 and A2] Tobacco sheets were produced and evaluated in the same manner as in Reference Example A1, except that leaf tobacco particles having a D90 of 80 μm and 200 μm, respectively, were used.

[0117] [Reference example A4] A tobacco sheet was produced and evaluated in the same manner as in Reference Example A1, except that leaf tobacco particles with a D90 of 200 μm were used and the mass ratio of water in the wet powder was 50 WB mass %.

[0118] [Reference comparative examples A3 and A4] Tobacco sheets were produced and evaluated in the same manner as in Reference Example A1, except that leaf tobacco particles with a D90 of 200 μm were used and the mass proportions of water in the wet powder were set to 30 and 40 WB mass%, respectively. The results are shown in Table A3. The "amount of water in the wet powder" in Table A3 corresponds to the amount of water in the mass proportion in the wet powder in Table A1.

[0119] [Reference Example A5 and Reference Comparative Example A5] According to the standard method, the sheet density is 0.75g / cm 3 and 0.96 g / cm 3 A tobacco sheet (Reference Example A5) having a sheet density of 1.19 g / cm 3A tobacco sheet (Reference Comparative Example A5) was manufactured using each of the tobacco sheets. A smoking test was carried out using the obtained tobacco sheets, and it was confirmed that the smoking article using the sheet of Reference Example A5 had a better delivery of flavor components at the early stage of puffing than the smoking article using the sheet of Reference Comparative Example A5. From this, it was inferred that the smoking articles using the tobacco sheets obtained in Reference Examples A1 to A3 also had a better delivery of flavor components at the early stage of puffing.

[0120] The evaluation method is explained below. [Smoking test] A non-combustion heating type smoking system as shown in FIG. 3 was prepared. However, in this example, an internal heating type smoking system was used. Then, a Cambridge filter was connected to the mouth end. The tobacco sheet prepared in each example was cut to prepare shreds. The shreds were filled at 70 volume % in a wrapper 22 having a length of 12 mm and a diameter of 7 mm to prepare a tobacco segment 20A. The system was subjected to a smoking test using a smoking machine. Specifically, using an automatic smoking machine (R-26 manufactured by Borgwaldt KC Inc.), the sample was automatically smoked under the conditions of a puff volume of 27.5 ml / sec, a puff time of 2 sec / puff, a puff frequency of 2 puffs / min, and 14 puffs, and particulate matter in the tobacco smoke for each puff was collected with a Cambridge filter (CM-133 manufactured by Borgwaldt KC Inc.). The Cambridge filter after the smoking test was shaken in 10 mL of methanol (special grade reagent manufactured by Wako Pure Chemical Industries, Ltd.) to obtain an analysis sample. 1 μL of the obtained analytical sample was placed in a microsyringe and analyzed by gas chromatography mass spectrometry (GC-MSD manufactured by Agilent, GC: 7890A, MS: 5975C).

[0121] [density] The tobacco sheet was cut into 55 mm squares, the mass (dry weight) was measured, and the mass per unit area (basis weight) was calculated. The thickness was also measured with a thickness meter (Mitutoyo), and the density was calculated from the basis weight and thickness.

[0122] [Reference example A5-1] The above-mentioned Reference Example A5 was reproduced, that is, a tobacco sheet was produced as follows. 1) Tobacco lamina was ground in a laboratory mill to obtain tobacco particles with a raw particle size D90 = 300 μm. 2) Softwood pulp was crushed in a laboratory mill. 3) These powdered materials were placed in a Ken mixer and mixed. 4) Water, glycerin, and Sunrose F30MC (cellulose ether manufactured by Nippon Paper Industries Co., Ltd.) as a binder were placed in a disperser (manufactured by Primix Co., Ltd.) and mixed for 30 minutes. 5) The pulp was added to this mixture and dispersed for 30 minutes using a disperser (manufactured by Primix). 6) The mixture obtained in 5) was cast onto an iron plate. 7) The iron plate on which the cast film was formed was placed in a forced-air dryer set at 80° C. and dried for 30 minutes, after which the film was peeled off from the iron plate to obtain a tobacco sheet.

[0123] [Table A2]

[0124] In the wet powder mass in Table A2, the amounts of ground tobacco leaf, glycerin, and binder indicate the amount of dry matter, and the amount of water indicates the total amount of the charged mass and the amount of water contained in the ground tobacco leaf, glycerin, and binder.

[0125] [Reference example A6] A tobacco sheet was produced and evaluated in the same manner as in Reference Example A5-1, except that tobacco leaf particles with a D90 of 80 μm were used. The results are shown in Table A3.

[0126] [Table A3]

[0127] The second embodiment will be described below with reference to Reference Example B and Comparative Reference Example B. [Reference example B1] Tobacco leaves were ground using a grinder (Hosokawa Micron ACM-5) to obtain leaf tobacco particles with a D90 of 70 μm. D90 was measured using a Mastersizer (Malvern). Leaf tobacco particles and carboxymethylcellulose (Nippon Paper Industries Co., Ltd., trade name Sunrose F30MC) as a binder were dry-blended using a mixer. Glycerin as a humectant and water as a medium were then added to the dry blend, and the mixture was mixed in a mixer to prepare a wet powder. The composition of each component is shown in Table B1.

[0128] The wet powder was kneaded six times at room temperature using a kneader (DG-1, manufactured by Dalton Co., Ltd.) to obtain a mixture. A T-die was used as the die, and the screw rotation speed was set to 38.5 rpm.

[0129] The wet powder was sandwiched between two Teflon (registered trademark) films (NITOFLON (R) No. 900UL manufactured by Nitto Denko Corporation) and rolled in four stages using a calendaring device (manufactured by Yuri Roll Machinery Co., Ltd.) until the desired thickness (more than 100 μm) was reached, to prepare a 105 μm-thick laminate having a layer structure of film / wet sheet / film. The roll gaps of the first to fourth stages were 650 μm, 330 μm, 180 μm, and 5 μm, respectively. The roll gap of the fourth stage was thicker than the thickness of the final sheet obtained, because the sheet released from the pressure between the rollers expanded to near the final thickness.

[0130] One Teflon (registered trademark) film was peeled off from the laminate and dried using a forced air dryer at 80° C. for 1 to 2 minutes. The other film was then peeled off and the wet sheet was dried under the same conditions to produce the sheet of this embodiment.

[0131] The sheet thus obtained was left to stand for 48 hours under conditions of room temperature 22°C and relative humidity 60%. Next, a plurality of apertures with aperture dimensions of 0.2 mm x 0.2 mm were provided in the sheet using a laser processing device (manufactured by TROTEC). The apertures were equally spaced at 0.4 mm intervals. Detailed conditions are shown in Table B2. The processed tobacco sheet thus obtained was evaluated for air permeability and release profile by the method described below. The results are shown in Table B2 and Figure 5. The vertical axis of Figure 5 indicates the amount of nicotine normalized by the amount of nicotine per one flavored smoking article. That is, when the amount of nicotine detected in one puff is x (g) and the amount of nicotine per one stick (the total amount of nicotine in 1 to 14 puffs) is y (g), the value of x / y is plotted on the vertical axis.

[0132] <Breathability> The sheet after perforation was left to stand for 48 hours under conditions of room temperature 22°C and relative humidity 60%. Then, this sheet was cut into a size of 40 mm x 240 mm and measured using an air permeability measuring device (PPM1000M manufactured by Cerulean) under the conditions of differential pressure 1 kPa and a measuring head of 2 cm in diameter. 2 The measurement was performed under a room temperature of 22°C and a relative humidity of 60%. The air permeability was measured under a differential pressure of 1 kPa and a 2 Air flow rate (cm) per minute 3 ) was calculated as

[0133] <Ingredient Release Profile> 1) After perforations were made in the sheet, it was left to stand for 48 hours at a room temperature of 22°C and a relative humidity of 60%. 2) The thickness and basis weight were measured, and the sheet density was calculated. 3) The sheet was cut into pieces measuring 55 mm x 0.8 mm. 4) The cut sheet was filled into a φ7.1 sheath paper to achieve the specified volume filling rate, and then cut into a length of 12 mm. 5) A 12 mm long smoking segment (tobacco segment), a filter, and a paper tube were connected to prepare a cigarette for smoking test (flavor inhalation article). 6) A non-combustion heating type smoking system as shown in FIG. 3 was prepared. In this example, an internal heating type smoking system was used. A Cambridge filter was then connected to the mouth end. The sheets prepared in each example were cut to prepare shreds. The shreds were filled at 70% by volume in a wrapper 22 having a length of 12 mm and a diameter of 7 mm. Tobacco Segment 20A was prepared. The system was subjected to a smoking test using a smoking machine. Specifically, the sample was automatically smoked using an automatic smoking machine (R-26 manufactured by Borgwaldt KC Inc.) under the conditions of a puff volume of 27.5 ml / sec, a puff time of 2 sec / puff, a puff frequency of 2 puffs / min, and 14 puffs, and particulate matter in the tobacco smoke for each puff was collected with a Cambridge filter (CM-133 manufactured by Borgwaldt KC Inc.). The Cambridge filter after the smoking test was shaken in 10 mL of methanol (Wako Pure Chemical Industries, Ltd., special grade reagent) to obtain an analysis sample. 1 μL of the obtained analysis sample was collected in a microsyringe and analyzed by gas chromatography mass spectrometry (GC-MSD manufactured by Agilent, GC: 7890A, MS: 5975C).

[0134] [Table B1]

[0135] [Reference Examples B2~B4, Reference Comparative Example B1] By changing the laser processing conditions, sheets with the air permeability shown in Table B2 were prepared. Using each sheet, and except for changing the filling rate, cigarettes for smoking tests were prepared and evaluated in the same manner as in Reference Example B1. The results are shown in Figure 5.

[0136] [Table B2]

[0137] As shown in the figure, a smoking article using a sheet of this embodiment can achieve an excellent profile, with high initial puff delivery and delivery equivalent to that of a conventional sheet even in the latter stages.

[0138] An embodiment will be described below.

[0139] An embodiment will be described below. [1] A tobacco sheet for a non-combustion heating type flavor inhaler, comprising a tobacco raw material, the tobacco sheet having a cross section in the thickness direction thereof having a corrugated shape. [2] The tobacco sheet for a non-combustion heating-type flavor inhaler described in [1], further comprising an aerosol generating agent. [3] The tobacco sheet for a non-combustion heating-type flavor inhaler described in [2], wherein the aerosol generating agent is at least one selected from the group consisting of glycerin, propylene glycol, and 1,3-butanediol. [4] The tobacco sheet for a non-combustion heating-type flavor inhaler according to [2] or [3], wherein the ratio of the aerosol generating agent contained in 100% by mass of the tobacco sheet is 4 to 50% by mass. [5] A tobacco sheet for a non-combustion heating-type flavor inhaler described in any one of [1] to [4], wherein the tobacco sheet further contains a first molding agent and a second molding agent. [6] The tobacco sheet for a non-combustion heating-type flavor inhaler described in [5], wherein the first molding agent is at least one selected from the group consisting of polysaccharides, proteins, and synthetic polymers. [7] The tobacco sheet for a non-combustion heating-type flavor inhaler described in [5] or [6], wherein the second molding agent is at least one selected from the group consisting of polysaccharides, proteins, and synthetic polymers, which is different from the first molding agent. [8] A tobacco sheet for a non-combustion heating-type flavor inhaler according to any one of [5] to [7], wherein the proportion of the first molding agent contained in 100% by mass of the tobacco sheet is 0.1 to 15% by mass. [9] A tobacco sheet for a non-combustion heating-type flavor inhaler according to any one of [5] to [8], wherein the proportion of the second molding agent contained in 100% by mass of the tobacco sheet is 0.1 to 15% by mass.

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

[11]

[10] A non-combustion heating type flavor inhaler according to the present invention; a heating device for heating the tobacco-containing segment; A non-combustion heating type flavor inhalation system comprising:

[12] A method for producing a tobacco sheet for a non-combustion heating type flavor inhaler according to any one of [1] to [9], preparing a mixture including a tobacco raw material, an aerosol generating agent, a first molding agent, and a second molding agent; rolling the mixture to form a rolled product; A step of pressing a rotary roll blade against the rolled product to cut it into strips and impart a corrugated shape to the rolled product; The method includes:

[0140] (1) Density is 1.0 g / cm 3 Below is a tobacco sheet. (2) The sheet according to (1), which is a pressure-molded sheet. (3) A sheet according to (1) or (2), which is produced from a wet powder comprising tobacco particles having a D90 of 200 μm or more and a liquid medium, and the moisture content in the wet powder is 50 mass% or more. (4) A sheet according to any one of (1) to (3), comprising tobacco particles having a D90 of 300 μm or more. (5) The sheet according to (4), which contains tobacco particles having a D90 of 500 μm or more. (6) A non-combustion heating smoking article comprising the tobacco sheet or a material derived therefrom according to any one of (1) to (5) above. (7) Step 1 of kneading at least tobacco particles, a binder, and a medium to prepare a mixture; Step 2, extruding the mixture through a die or extrusion process to prepare a wet sheet; Step 3: drying the wet wipes; The present invention relates to a method for producing a semiconductor device comprising the steps of: Tobacco sheet Manufacturing method. (8) The manufacturing method according to (7), wherein the medium contains water. (9) The method according to (7) or (8), wherein step 2 includes preparing a laminate sheet in which a wet sheet is present between two base films. (10) The manufacturing method according to any one of (7) to (9), wherein the step 1 includes kneading at least a tobacco material, a binder, and a medium in a single-screw or multi-screw kneader. (11) The 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.

[0141] <1> Moisturizer and Binder and and either or both of a flavoring agent or a molding aid; A smoking composition sheet or tobacco sheet having an air permeability of greater than 0 Coresta units. <2> The air permeability is 500 Coresta units or more. <1> The sheet described in. <3> the flavoring agent is selected from the group consisting of tobacco, flavors, and combinations thereof; <1> or <2> The sheet described in. <4> The moisturizer is a polyhydric alcohol. <1> ~ <3> 2. A sheet according to any one of the preceding claims. <5> The binder is selected from the group consisting of polysaccharides, proteins, synthetic polymers, and combinations thereof. <1> ~ <4> 2. A sheet according to any one of the preceding claims. <6> The molding aid is a pulp or nonwoven fabric of vegetable fiber or synthetic fiber; <1> ~ <5> 2. A sheet according to any one of the preceding claims. <7> It is a pressure-molded sheet. <1> ~ <6> 2. A sheet according to any one of the preceding claims. <8> A plurality of holes are provided by physical processing. <1> ~ <6> 2. A sheet according to any one of the preceding claims. <9> A plurality of holes formed by chemical processing. <1> ~ <7> 2. A sheet according to any one of the preceding claims. [Explanation of symbols]

[0142] 1 Tobacco Sheet 2 waves 3 Sawtooth Shape 4. Non-combustion heating type flavor inhaler 5. Tobacco-containing segments 6 Cooling Segment 7 Center Hole Segment 8 Filter Segments 9 Mouthpiece Segments 10 Cylindrical member 11 Perforation 12 Second packed bed 13 Second inner plug wrapper 14 Outer plug wrapper 15 Mouthpiece Lining Paper 16 Heating device 17 Body 18 Heater 19 Metal tube 20 Battery unit 21 Control unit 22 Recess 200A Tobacco-containing segment 210 Filling 220 Rapper T Tobacco Sheet

Claims

1. A pressure-molded tobacco sheet for a non-combustion heating type flavor inhaler containing tobacco raw material, the pressure-molded tobacco sheet being manufactured from a wet powder containing tobacco particles having a D90 of 400 μm or more and a liquid medium, the moisture content of the wet powder being 50% by weight or more, the cross section of the tobacco sheet in the thickness direction having a wavy shape, Density is 1.0 g / cm ３ Below is the A tobacco sheet for a non-combustion heating type flavor inhaler.

2. Moisturizer and Binder and and, 2. The sheet of claim 1, having an air permeability greater than 0 Coresta units.

3. 3. The sheet according to claim 2, wherein the air permeability is at least 500 Coresta units.

4. A non-combustion heating type flavor inhaler comprising a tobacco-containing segment comprising the tobacco sheet for a non-combustion heating type flavor inhaler according to claim 1.

5. The non-combustion heating type flavor inhaler according to claim 4, a heating device for heating the tobacco-containing segment; A non-combustion heating type flavor inhalation system comprising:

6. A method for producing the tobacco sheet for a non-combustion heating type flavor inhaler according to claim 1, preparing a mixture including a tobacco raw material, an aerosol generating agent, a first molding agent, and a second molding agent; rolling the mixture to form a rolled product; A step of pressing a rotary roll blade against the rolled product to cut it into strips and impart a corrugated shape to the rolled product; A method for providing the above.

7. A method for producing the tobacco sheet for a non-combustion heating type flavor inhaler according to claim 2, comprising the steps of: A step of preparing a mixture including a tobacco raw material, a humectant, a binder, either or both of a flavoring agent and a molding aid, a first molding agent, and a second molding agent; rolling the mixture to form a rolled product; A step of pressing a rotary roll blade against the rolled product to cut it into strips and impart a corrugated shape to the rolled product; A method for providing the above.

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