Method for manufacturing tobacco rod part for non-combustion heating type flavor inhalation article

Abstract

This method for manufacturing a tobacco rod part for a non-combustion heating-type flavor inhalation article comprises: step 1 for humidifying a tobacco filling material, followed by drying; and step 2 for preparing a tobacco rod part in which the tobacco filling material obtained in step 1 is filled in a cylindrical wrapper.

Description

[Technical field]

[0001] The present invention relates to a method for producing a tobacco rod portion for a non-combustion heating-type flavor inhalation article. [Background technology]

[0002] As an alternative to conventional combustion-type flavor inhalation articles, non-combustion heating-type flavor inhalation articles have been developed. These articles use reconstituted tobacco sheets containing a relatively large amount of aerosol-generating substrate. For example, Patent Documents 1 and 2 propose a method of producing a tobacco rod part by discharging the reconstituted tobacco sheet from a bobbin and directly filling it into a wrapper. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6017546 [Patent Document 2] Patent No. 6307661 [Non-patent literature]

[0004] [Non-Patent Document 1] Jaccard G. et al., “Investigation and comparison of the transfer of TSNA from tobacco to cigarette mainstream smoke and to the aerosol of a heated tobacco product, THS2.2”, Reg. Toxicol. Pharmacol., Vol. 97, p. 103-109, 2018 Summary of the Invention [Problem to be solved by the invention]

[0005] The methods described in the above-mentioned patent documents can efficiently produce tobacco rods, but the inventors came up with the idea that the quality could be improved by carrying out a specific treatment before filling the tobacco filler into the wrapper. In view of the above circumstances, the present invention has an objective of providing a tobacco rod for a non-combustion heating-type flavor inhalation article with improved quality. [Means for solving the problem]

[0006] The above problems are solved by the present invention described below. Aspect 1 Step 1: humidifying and then drying the tobacco filling; Step 2 is to prepare a tobacco rod portion in which the tobacco filler obtained in step 1 is filled in a cylindrical wrapper; A method for manufacturing a tobacco rod portion for a non-combustion heating-type flavor inhalation article, comprising: Aspect 2 A method according to claim 1, wherein the tobacco filler comprises an aerosol-forming substrate and a reconstituted tobacco sheet. Aspect 3 The method of claim 2, further comprising cutting the tobacco filler into strands. Aspect 4 The tobacco filler contains a reconstituted tobacco sheet A and a reconstituted tobacco sheet B, the step 1 includes moistening each of the reconstituted tobacco sheets, mixing the mixture, and drying the mixture, or moistening each of the reconstituted tobacco sheets, drying the mixture, and then mixing the reconstituted tobacco sheets; The production method according to any one of aspects 1 to 3. Aspect 5 The tobacco filler contains a reconstituted tobacco sheet A and a lamina, the step 1 includes moistening the reconstituted tobacco sheet A and the lamina, respectively, and then mixing the mixture and drying the mixture, or moistening the reconstituted tobacco sheet A and the lamina, respectively, and then drying the mixture, and then mixing the reconstituted tobacco sheet A and the lamina, The production method according to any one of aspects 1 to 3. Aspect 6 A method according to any one of aspects 1 to 5, further comprising the step of mixing a non-tobacco material with the tobacco filler. Aspect 7 A method according to any one of aspects 1 to 6, further comprising the step of adding an additive to the tobacco filler. Aspect 8 A method according to aspect 4 or 6, further comprising the step of adding an additive to either or both of the reconstituted tobacco sheet A and the reconstituted tobacco sheet B. Aspect 9 A method according to any one of claims 5 to 6, further comprising the step of adding an additive to either or both of the reconstituted tobacco sheet and the lamina. Aspect 10 The method according to any one of aspects 7 to 9, further comprising the steps of measuring the components of the tobacco filler and adjusting the type or amount of the additive based on the measurement results. Aspect 11 The components of the reconstituted tobacco sheet A are measured; Based on the measurement results, the type of reconstituted tobacco sheet B or lamina is determined; The method according to embodiment 4 or 5. Aspect 12 The components of the reconstituted tobacco sheet A are measured; Based on the measurement results, The type or amount of additives added to the reconstituted tobacco sheet B, or determining the type or amount of additive to be added to the lamina; The method of manufacture according to embodiment 7. Aspect 13 A method according to any one of aspects 1 to 3, 6, and 7, wherein the tobacco filler is humidified so that the moisture content therein is 15 to 25% by weight. Aspect 14 A method according to any one of aspects 4 to 12, wherein the reconstituted tobacco sheet is humidified so that the moisture content therein is 15 to 25% by weight. Aspect 15 15. The method according to any one of aspects 1 to 14, wherein the drying is carried out by flash drying or annular drying. Aspect 16 A method according to any one of aspects 4 to 15, wherein the reconstituted tobacco sheet is a paper-formed sheet, a cast sheet, or an extruded sheet. Effect of the Invention

[0007] According to the present invention, a tobacco rod portion for a non-combustion heating-type flavor inhalation article having improved quality can be provided. [Brief description of the drawings]

[0008] [Figure 1] Conceptual diagram of the first embodiment [Diagram 2] Conceptual diagram of the second embodiment [Diagram 3] Conceptual diagram of the third embodiment [Figure 4] Conceptual diagram of the fourth embodiment [Diagram 5] Conceptual diagram of the fifth embodiment [Figure 6] A schematic cross-sectional view showing an example of a non-combustion heating type smoking system. [Figure 7] Schematic cross-sectional view showing an example of a non-combustion heating type flavor inhalation article. MODE FOR CARRYING OUT THEINVENTION

[0009] The present invention will be described in detail below. In the present invention, "X to Y" includes the extreme values ​​X and Y. The manufacturing method of the present invention comprises step 1 of moistening and then drying a tobacco filler, and step 2 of preparing a tobacco rod portion in which the tobacco filler obtained in step 1 is packed into a cylindrical wrapper. 1.Process 1 (1) Tobacco filling The tobacco filler is a material that is filled in a wrapper and used for smoking. In the present invention, a known tobacco filler can be used, but it is preferable to include a tobacco sheet from the viewpoint of ease of production. The tobacco sheet is a sheet-shaped tobacco material, and in the present invention, a reconstituted tobacco sheet is preferable. In one aspect, the term "tobacco sheet" means a sheet-shaped tobacco material, or a material derived from the sheet-shaped tobacco material (e.g., shredded material). The reconstituted tobacco sheet is a tobacco sheet that includes a reconstituted material (reconstituted tobacco or reconstituted tobacco granules) made of fine powder of a Nicotiana plant. The tobacco sheet may be a paper-making sheet produced by a paper-making method, a cast sheet produced by a cast method, or an extrusion sheet produced by an extrusion method.

[0010] The papermaking method is a method in which a mixture containing tobacco raw materials and a liquid medium such as water is made into paper and dried to produce a sheet. The mixture usually contains pulp or fiberized tobacco raw materials. The casting method is a method in which a mixture containing tobacco raw materials and a liquid medium such as water is spread (cast) onto a substrate and dried to produce a sheet. The extrusion method is a method in which a mixture containing tobacco raw materials and a liquid medium such as water is extruded through a die such as a T-die to produce a sheet.

[0011] The tobacco filling may contain an aerosol-generating substrate. The aerosol-generating substrate is a material that vaporizes when heated and cools to generate an aerosol, or generates an aerosol by atomization. Any known aerosol-generating substrate may be used, and examples thereof include polyhydric alcohols such as glycerin and propylene glycol (PG), triethyl citrate (TEC), triacetin, and the like, each of which has a boiling point of more than 100°C. The amount of the aerosol-generating substrate in the tobacco filling is preferably 1 to 40% by weight, more preferably 5 to 30% by weight, and even more preferably 5 to 20% by weight, in terms of dry weight (weight excluding water contained therein, the same applies below). If the amount of the aerosol-generating substrate exceeds the upper limit, it may be difficult to manufacture the tobacco filling, and if it is less than the lower limit, the smoke sensation may be reduced.

[0012] When using a reconstituted tobacco sheet, it is preferable to release the sheet-like reconstituted tobacco sheet and supply it quantitatively to step 1. Release refers to breaking up a stacked mass of reconstituted tobacco sheets (in the form of sheets) into a single sheet. There are no limitations on the size, but in one embodiment, the reconstituted tobacco sheet in the form of sheets is a columnar body, the cross section of which is a square with one side measuring 3 to 10 cm.

[0013] When transporting the reconstituted tobacco sheet in the form of individual leaves, it is preferable that the reconstituted tobacco sheet is packed in a packaging container having a shape and size that is easy to handle. One example of a packaging container is a C-48 box, which is known among tobacco manufacturers. The C-48 box is made of cardboard and has a size of about 115 x 70 x 75 cm. The reconstituted tobacco sheet in the form of individual leaves can be directly packed in the C-48 box, but in order to suppress quality changes during transportation, the reconstituted tobacco sheet may be packed in a plastic bag and then stored in the C-48 box. According to the embodiment of the present application, about 100 to 200 kg of the reconstituted tobacco sheet in the form of individual leaves is packed in the C-48 box.

[0014] Another embodiment is a method of transporting the reconstituted tobacco sheet in the form of a bobbin. In the reconstituted sheet manufacturing process, a continuous sheet in the vertical direction with a width of 10 to 100 cm can be wound around a core to form a bobbin shape. When a reconstituted tobacco sheet transported in the form of a bobbin is used in the present invention, it is necessary to cut the reconstituted tobacco sheet to a predetermined size using a shredder or the like before subjecting the reconstituted tobacco sheet to step 1.

[0015] (2) Humidification The humidification can be performed using a known device, but in the present invention, from the viewpoint of efficiency, it is preferable to use a cylinder-type device. The device is equipped with a water supply device, a heating device, and an exhaust device, and is equipped with a rotating device that rotates the cylinder around the central axis. The humidification is performed by supplying water from the water supply device to the tobacco filler. The humidification conditions are adjusted so that the moisture content of the tobacco filler after humidification is about 15 to 25% by weight. In one embodiment, the inner wall temperature of the cylinder can be 50 to 70°C, the air flow rate in the cylinder can be 0.05 to 0.15 m / sec, and the residence time of the tobacco filler can be about 3 to 6 minutes. The dimensions of the cylinder are not limited, but in one embodiment, the diameter is about 2 to 4 m and the length is about 5 to 10 m. It is more preferable to perform the humidification by ventilating the cylinder. When the tobacco filler is heated, a part of the content components with a low boiling point such as ammonia volatilizes and is discharged outside the cylinder by exhaust, thereby reducing negative taste and odor during use.

[0016] (3) Drying The drying makes the tobacco filling suitable for storage. The drying can be performed by a known method, but in the present invention, it is preferable to adopt an airflow drying method or annular drying method from the viewpoint of efficiency. The former is a method in which a heated airflow (preferably superheated steam) and the tobacco filling are brought into contact with each other in a tube to perform drying. An example of such an apparatus is described in International Publication No. 2013 / 052490. This method can also impart a characteristic flavor character to the tobacco filling. Since this method dries the moisture in the tobacco filling in a short time, the tobacco filling after drying can be expanded compared to before drying, and since the tobacco filling after drying has a curled shape, the expansion bulk of the tobacco filling is increased. In addition, since the tobacco filling is dried in a short time under an atmosphere of a large amount of superheated steam, the amount of oxygen in the atmosphere during heating in the drying process can be reduced, and therefore undesired chemical changes in the tobacco filling caused by oxygen can be suppressed.

[0017] The latter is a method in which the tobacco filler is heated and dried in a cylindrical device. This method can also remove highly volatile components contained in the tobacco filler. This method takes a longer time to dry than the air flow drying method, so it is preferable in that it allows for more precise moisture control and achieves an accurate finish with respect to the outlet moisture content.

[0018] (4) Implementation Step 1 will now be described with reference to a preferred embodiment. (4-1) First embodiment 1) Preparation FIG. 1 shows a first embodiment. According to this embodiment, a reconstituted tobacco sheet in the form of a single leaf is prepared and then released. The moisture content of the reconstituted tobacco sheet at this stage is preferably 5-15% by weight. An aerosol-generating substrate is added before or after the release. The amount of the aerosol-generating substrate in the sheet is preferably 5-30% by weight. Foreign matter is removed from the released reconstituted tobacco sheet. Alternatively, the reconstituted tobacco sheet can be mixed using a blend silo to homogenize the quality.

[0019] 2) Humidification The reconstituted tobacco sheet is then humidified. The humidification apparatus and humidification conditions are as described above. At this time, the moisture content of the reconstituted tobacco sheet is adjusted to 15 to 25% by weight. In addition, this process removes undesirable components derived from the tobacco raw material (such as components that impart a bitter taste).

[0020] 3) Addition of additives (flavoring) In this step, additives are added to the reconstituted tobacco sheet after humidification. The additives are materials other than the raw materials such as the reconstituted tobacco sheet and the aerosol-generating substrate. Examples of additives include tobacco powder, flavorings, the above-mentioned aerosol-generating substrate, tobacco flavor enhancers such as acids and alkalis, solvents such as ethanol, water, benzyl alcohol, and propylene glycol, and antioxidants such as polyphenols or vitamins. Additives can be added by known methods, but can also be added by filling a rotating cylindrical device with the reconstituted tobacco sheet and spraying the flavorings and the like. Among them, adding tobacco powder or flavorings, which are flavoring components, is particularly called flavoring, and in this embodiment, flavoring is preferably performed. Adding flavor at this stage is suitable when a flavoring component with a relatively large molecular weight is added. This is because such flavoring components have a low vapor pressure and a high affinity with water, and therefore easily penetrate into the inside of the sheet when added to the reconstituted tobacco sheet after humidification.

[0021] The fragrances include the following, which can be used alone or in combination: 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 resinoids, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil, carob absolute, beta-carotene, carrot juice, L-carnitine Rubone, β-caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, cinnamyl alcohol, cinnamyl cinnamate, citronella oil, DL-citronellol, clary sage extract, cocoa, coffee, konjac oil, coriander oil, cuminaldehyde, davana oil, δ-decalactone, γ-decalactone, decanoic acid, dill herb oil, 3,4-dimethyl-1,2-cyclopentanedione, 4,5-dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 3,7-dimethyl ethyl-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 lactone, 4-hydroxy-4-(3-hydroxy-1-butenyl)-3,5,5-Trimethyl-2-cyclohexen-1-one, 4-(para-hydroxyphenyl)-2-butanone, Sodium 4-hydroxyundecanoate, Inmortell 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, Lovage Root Oil, Maltol, Maple Leaf Oil Menthol, Menthone, L-Menthyl Acetate, Para-Methoxybenzaldehyde, Methyl 2-Pyrrolyl Ketone, Methyl Anthranilate, Methyl Phenylacetate, Methyl Salicylate, 4'-Methylacetophenone, Methylcyclopentenolone, 3-Methylvaleric Acid, Mimosa Absolute, Honey, Myristic Acid, Nerol, Nerolidol, γ-Nonalactone, Nutmeg Oil, δ-Octalactone, Octanal, Octanoic Acid, Orange Flower Oil, Orange Oil, Orris Root Oil, Palmitic Acid, ω-Pentanthate Tadecalactone, peppermint oil, petitgrain paraguay oil, phenethyl alcohol, phenethyl phenylacetate, phenylacetic acid, piperonal, plum extract, propenyl guaethol, 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 vegetable 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.).

[0022] It is also preferable to add an antioxidant as an additive. It has been reported that tobacco vapor from non-combustion heating type flavor inhalation articles contains TSNAs (Tobacco specific nitrosamines) (Non-Patent Document 1). In non-combustion heating type flavor inhalation articles, the tobacco filler is continuously heated for a long time during use. Therefore, in the tobacco filler of non-combustion heating type flavor inhalation articles, unintended components may be generated due to long-term heating. The addition of an antioxidant can suppress the above reaction and suppress the generation of unintended components.

[0023] As the antioxidant, for example, an antioxidant known as a food additive can be used. Examples include gallic acid, erythorbic acid, ascorbic acid, catechin, dihydrocaffeic acid, p-coumaric acid, ferulic acid, 3-(4-hydroxyphenyl)propionic acid, quercetin, esculetin, kaempferol, caffeic acid, tocopherol, dibutylhydroxytoluene (BHT), quinic acid, chlorogenic acid, rutin, scopoletin, and cinnamic acid. The antioxidant is preferably at least one selected from the group consisting of gallic acid and erythorbic acid. The antioxidant is added in an amount of, for example, 0.25 to 10% by weight, preferably 0.25 to 5.0% by weight, based on the tobacco filling material. %of Antioxidants are contained in tobacco filling materials in amounts that are incompatible with solvents such as water and ethanol. Dissolution Alternatively, it can be dispersed and added to the tobacco filler by spraying or the like.

[0024] 4) Cutting In this step, the aromatized reconstituted tobacco sheet is cut. The cutting can be performed using a known device, but in the present invention, it is preferable to cut the reconstituted tobacco sheet into a strand shape by supplying the reconstituted tobacco sheet so that its end is parallel to the direction in which the blade of the knife drum extends and pressing it. The shape of the strand can be about 0.6 to 1.5 mm in width from the viewpoint of ease of filling into a wrapper, etc. The length of the strand after cutting is determined by the size of the reconstituted tobacco sheet in the form of a sheet fed to the cutting step, the crushing state of the reconstituted tobacco sheet in the form of a sheet in each step, and the crushing state of the strand during and after cutting, but it is preferable to set it to about 5 to 40 mm from the viewpoint of ease of filling into a wrapper. The reconstituted tobacco sheet is preferably supplied to the cutting machine using a metering tube. In this step, in order to perform cutting efficiently, the moisture content of the reconstituted tobacco sheet supplied to the cutting step may be adjusted to 15 to 25% by weight.

[0025] 5) Drying In this step, the reconstituted tobacco sheet in the form of strands is dried. The drying apparatus and drying conditions used are as described above. At this time, the moisture content of the reconstituted tobacco sheet is adjusted to 8 to 12% by weight. Furthermore, in this step, the swelling bulk of the reconstituted tobacco sheet in the form of strands is improved.

[0026] 6) Mixing of non-tobacco materials In this process, a solid additive carrying a filler or a flavoring is added to the reconstituted tobacco sheet in the form of a strand. Examples of the filler include strand-shaped paper, strand-shaped calcium carbonate sheets, and granular porous polysaccharide beads. From the viewpoint of enhancing the mixing property, it is preferable that the material to be added has a shape similar to that of the strand. For example, when a flavoring-carrying polysaccharide sheet is added as a solid additive carrying a flavoring, there is an advantage that the taste and aroma can be enhanced when using the non-combustion heating type flavor inhalation article. The flavoring-carrying sheet to be mixed with the tobacco filler is preferably one based on a thickening polysaccharide, as disclosed in Patent No. 5941988, Patent No. 5934799, Patent No. 5514953, and Patent No. 5481574, in terms of the balance between the aroma retention performance during storage and the flavor release performance during use. The shape of the flavoring-carrying polysaccharide sheet can be about 0.5 to 1.5 mm in width, 2 to 4 mm in length, and about 70 μm in thickness. The method of mixing is not limited, and examples include a method in which a conveyor transporting a strand-shaped reconstituted tobacco sheet is joined to a conveyor transporting a shredded flavor-loaded polysaccharide sheet and the two are mixed together, or a method in which the two are introduced into a cylindrical mixer and mixed together.

[0027] 7) Kaka The dried reconstituted tobacco sheet in the form of strands may be flavored again. The method and ingredients used for flavoring are as described above. Adding flavor at this stage is suitable for adding flavor ingredients with relatively small molecular weights. Since the tobacco filler can be processed into a flavor inhalation article without drying after this step, a flavor ingredient that produces a relatively easily volatile aroma can be added in this step to impart a strong flavor characteristic to the final product.

[0028] 8) Primary storage The thus obtained strand is stored. The stored tobacco filler (strand) is then subjected to step 2.

[0029] (4-2) Second embodiment FIG. 2 shows the second embodiment. In this embodiment, two lines are used. In one line, steps 1) to 3) of the first embodiment are carried out to prepare a reconstituted tobacco sheet A. Similarly, in the other line, steps 1) to 3) of the first embodiment are carried out to prepare a reconstituted tobacco sheet B. In this case, it is preferable that the reconstituted tobacco sheets A and B are composed of different components. In addition, aromatization may be carried out on both reconstituted tobacco sheets A and B, on one of them, or on neither.

[0030] Next, reconstituted tobacco sheets A and B are mixed. The mixing ratio is appropriately adjusted so as to achieve the desired flavor. By mixing the two at this stage, the mixing efficiency can be increased, and the mixed product can be subjected to further processes such as shredding and drying, resulting in a more uniform product.

[0031] Next, the mixture of reconstituted tobacco sheets A and B is subjected to the steps of shredding, drying, mixing with non-tobacco materials, and aromatization, and the obtained product is primarily stored. These steps are as described in 4) to 8) of the first embodiment.

[0032] This embodiment is suitable for producing brands with different flavor characteristics. For example, if the base material common to these brands is reconstituted tobacco sheet A, a different brand can be efficiently produced by appropriately using the sub-raw material reconstituted tobacco sheet B when switching brands. In addition, if the reconstituted tobacco sheet A is analyzed during the production of the sheet A and any components are found to be lacking, a reconstituted tobacco sheet B designed to supplement the components can be mixed in, thereby producing a mixed reconstituted tobacco sheet with stable quality.

[0033] The types of tobacco used as the material for reconstituted tobacco include Nicotiana tabacum flue, burley, orient, or native tobacco, which can be used alone or in combination. Usually, the blend ratio of these is changed to achieve the desired flavor and aroma. The design concept for blending sheets A and B is, for example, to first prepare sheet A with a high ratio of flue and orient tobacco (the total amount of both is preferably more than 50% by weight, more preferably 80% by weight or more of the total tobacco), and prepare sheet B with a high ratio of burley or native tobacco (the total amount of both is preferably more than 30% by weight, more preferably 80% by weight or more of the total tobacco). By determining the blend ratio of sheets A and B according to the desired flavor and aroma, a flavor inhalation article with many variations can be manufactured, even though only two types of sheets are prepared.

[0034] In addition to the four types of tobacco, which have different flavors depending on the type, there are also types of tobacco that have strong flavor and aroma characteristics even in small amounts. Examples of such tobacco include tobacco called perique, latakia, and dark fire cured. These varieties are the same as the above-mentioned flue-cured, burley, orient, or native varieties, but after harvesting at leaf tobacco farmers, they are smoked or fermented under forced high temperature and moisture conditions. Tobacco that has been fermented, such as perique or dark fire cured, or tobacco that has been smoked, such as latakia, develops unique flavor characteristics when blended in small amounts. If a reconstituted tobacco sheet containing perique, latakia, dark fire cured, or the like is used as sheet B, the variation of brand characteristics can be expanded. The total amount of perique, latakia, and dark fire cured is preferably 1.0% by weight or more and less than 10.0% by weight, more preferably 1.0% by weight or more and less than 5.0% by weight, of the total tobacco amount.

[0035] (4-3) Third embodiment FIG. 3 shows a third embodiment. In this embodiment, two lines are used. In one line, steps 1) to 5) of the first embodiment are carried out to prepare a strand-shaped reconstituted tobacco sheet A. Similarly, in the other line, steps 1) to 5) of the first embodiment are carried out to prepare a strand-shaped reconstituted tobacco sheet B. In this case, it is preferable that the reconstituted tobacco sheets A and B are composed of different components. Moreover, aromatization may be carried out on both the reconstituted tobacco sheets A and B, or on one of them.

[0036] Next, the strand-shaped reconstituted tobacco sheets A and B are mixed together, with the mixing ratio being appropriately adjusted so as to achieve a desired flavor.

[0037] The mixture is then mixed with non-tobacco materials, flavored, and primarily stored, as described in 6) and 7) of the first embodiment.

[0038] This embodiment is suitable for producing brands with different flavor characteristics, as in the second embodiment. For example, when the base material common to these brands is reconstituted tobacco sheet A, if the sub-raw material reconstituted tobacco sheet B is appropriately used when switching brands, another brand can be produced efficiently. In addition, if the reconstituted tobacco sheet A is analyzed during the production of the reconstituted tobacco sheet A and any components are insufficient, the reconstituted tobacco sheet A with stable quality can be produced by mixing the reconstituted tobacco sheet B designed to supplement the components. Furthermore, in this embodiment, the reconstituted tobacco sheets A and B are each subjected to shredding and drying, so that conditions can be set according to the individual characteristics. For example, when the flavoring added to the reconstituted tobacco sheet A and the flavoring added to the reconstituted tobacco sheet B are different, the optimal drying conditions also differ depending on the flavoring, but this embodiment has the advantage of being able to select conditions suitable for the flavoring.

[0039] (4-4) Fourth embodiment FIG. 4 shows the fourth embodiment. In this embodiment, two lines are used. In one line, steps 1) to 3) of the first embodiment are carried out to process the reconstituted tobacco sheet A. Similarly, in the other line, lamina is processed. Lamina is a deboned leaf obtained by removing the backbone from tobacco leaves. Although FIG. 4 shows an embodiment in which two types of lamina are used, one or more types of lamina can be used. In this case, it is preferable that lamina A and B are composed of different components. The process up to the aromatization process of the lamina can be carried out in the same manner as steps 1) to 3) of the first embodiment.

[0040] Next, the laminas A and B are mixed, and the mixture is further moistened. Moistening can be performed in the same manner as in 2) of the first embodiment. This moistened mixture is further mixed with the flavored reconstituted tobacco sheet A, which is then subjected to the steps of shredding, drying, mixing with non-tobacco materials, and flavoring, and the resultant is primarily stored. These steps are as described in 4) to 8) of the first embodiment. Moreover, flavoring may be performed on one or more of the reconstituted tobacco sheet A, lamina A, and lamina B, or on all of them.

[0041] This embodiment can obtain the effects described in the second embodiment. Furthermore, by mixing a lamina having a higher expansion volume than a tobacco sheet, it is possible to reduce the amount of filling required to achieve the same rolling hardness, compared to a case in which the tobacco rod portion is formed only from a tobacco sheet.

[0042] (4-5) Fifth embodiment 5 shows the fifth embodiment. In this embodiment, two lines are used. In one line, steps 1) to 5) of the first embodiment are carried out to prepare a strand-shaped reconstituted tobacco sheet A. Similarly, in the other line, a mixture of laminas A and B is prepared in the same manner as steps 1) to 3) of the first embodiment, and this mixture is then moistened, shredded, and dried in the same manner as steps 2), 3), and 5) of the first embodiment.

[0043] Next, the strand-shaped reconstituted tobacco sheet A and the strand-shaped lamina mixture are mixed together at a suitable mixing ratio so as to achieve a desired flavor.

[0044] The mixture is then mixed with non-tobacco materials, subjected to a flavoring step, and the resulting product is primarily stored. These steps are as described in 6) and 7) of the first embodiment. The flavoring may be performed on one or more of the reconstituted tobacco sheet A, lamina A, and lamina B, or on all of them.

[0045] This embodiment can obtain the effects explained in the third embodiment. Furthermore, as explained in the fourth embodiment, it is also possible to reduce the filling amount.

[0046] (5) Other processes The manufacturing method of the present invention may further include a step of measuring the components of the tobacco filler and adjusting the amount of additive added based on the measurement results. At this time, it is preferable to transmit the measurement results to a controller, and the controller transmits the information to the additive adding device. In particular, it is preferable to measure the nitrite in the tobacco filler and determine the amount of antioxidant added based on the measurement. Since an excessive amount of antioxidant added can increase costs or impair flavor, by determining an appropriate amount, a user-friendly product can be provided without causing such problems.

[0047] (6) Preparation of reconstituted tobacco sheets A preferred embodiment for preparing a reconstituted tobacco sheet is described below. (6-1) Paper making method The tobacco plant material may be any one or a combination of Nicotiana tabacum flue, burley, orient, or landrace, and the plant parts may be flowers, leaves, veins, stems, or roots.

[0048] The tobacco plant material is roughly pulverized to a size of about 1 to 40 mm or less and subjected to extraction with water. The extraction temperature is preferably 30 to 90° C., and the extraction time is preferably 10 to 45 minutes.

[0049] Next, the mixture that has undergone the extraction step is subjected to a separation operation by centrifugation or using a wire mesh to separate it into an extract and a residue. The extract is concentrated under reduced pressure at a temperature condition of 40 to 70°C so that the ratio of the extract to water is 40 to 55% by weight. The concentrated liquid is mixed with an aerosol-generating base material such as glycerin. The residue is mixed with coarsely crushed wood pulp, and then treated with a refiner to fluff the fibers, and further crushed to make the size uniform. The mixture of the residue and wood pulp is suspended in a large amount of water, fed in a fixed amount onto a mesh wire used in the paper manufacturing process, dehydrated and dried to obtain a sheet. The concentrated liquid is sprayed onto the sheet. After spraying, drying is performed again. Finally, the sheet may be wound up on a bobbin, or may be processed with a shredder and cut into 3 to 10 cm squares and stored in a container.

[0050] An example of the raw material composition, ingredients, and physical properties of a reconstituted tobacco sheet produced by the papermaking method is shown below. (Raw material composition) Yellow lamina / scrap (mesophyll) 50-70% by weight Burley Lamina 0-50% by weight Yellow midrib (leaf vein) 0~50% by weight Burley midrib 0-35% by weight Wood pulp 7-12% by weight Glycerin 10-20% by weight Moisture 7~12% by weight (component) Nicotine 0.8-3.0% by weight (dry basis) Reducing sugars 5.0-20.0% by weight (dry basis) (Physical Properties) Swelling capacity after simple cutting into 0.8mm width: 250~400cm 3 / 100g After adding water, cutting into 0.8 mm width and air drying, the swelling capacity is 300~450cm3 / 100g

[0051] (6-2) Casting method The tobacco plant material may be any one or a combination of Nicotiana tabacum yellow, burley, oriental, or landrace, and the plant parts may be flowers, leaves, veins, stems, or roots.

[0052] Tobacco plant material is pulverized to a size of 100 μm or less, and mixed with an aerosol-generating base material such as water, pulp, or glycerin, a binder such as gums, modified cellulose, thickening polysaccharides, or modified starch, and flavorings to prepare a slurry. The moisture content of the slurry is preferably 50% by volume or more. The slurry is then spread into a thin sheet on a base material and dried in a dryer until the moisture content is about 7 to 14% by weight. Finally, the sheet may be wound up on a bobbin, or may be shredded and cut into 3 to 10 cm squares and stored in a container.

[0053] An example of the raw material composition and ingredients of a reconstituted tobacco sheet produced by the cast method is shown below. (Raw material composition) Yellow lamina (mesophyll) 60~95% by weight Burley lamina 0-20% by weight Yellow midrib (leaf vein) 0~20% by weight 0% Burley midrib by weight Wood pulp 3-5% by weight Glycerin 10-20% by weight Guar gum 2-10% by weight Moisture 7-14 weight % (component) Nicotine 1.5-5.0% by weight (dry basis) Reducing sugars 5-20% by weight (dry basis)

[0054] (6-3) Extrusion method Tobacco plant material is pulverized to a size of 300 μm or less, and mixed with water, pulp, glycerin, and other aerosol generating base materials, gums, modified cellulose, thickening polysaccharides, modified starch, and other binders, and flavorings to prepare a kneaded material. The kneaded material is then placed in an extruder having a die with an opening of a predetermined thickness and width at the outlet, and the sheet-like kneaded material is extruded from the extruder to a drying section such as a drying drum or a drying conveyor. The sheet is dried in the drying section until it has a moisture value of about 7 to 14% by weight. Finally, the sheet may be wound up on a bobbin, or may be shredded and cut into 3 to 10 cm squares and stored in a container.

[0055] An example of the raw material composition and ingredients of a reconstituted tobacco sheet produced by extrusion is shown below. (Raw material composition) Yellow lamina (mesophyll) 60~95% by weight Burley Lamina 0-20% by weight Yellow midrib (leaf vein) 0~20% by weight Burley midrib 0% by weight Wood pulp 3-5% by weight Glycerin 10-20% by weight Hydroxypropyl cellulose 2-10% by weight Moisture 7-14% (component) Nicotine 1.5-5.0% by weight (dry basis) Reducing sugars 5-20% by weight (dry basis)

[0056] 2.Process 2 In this step, a tobacco rod part is prepared in which the tobacco filler obtained in step 1 is filled in a cylindrical wrapper. For example, a tobacco rod part can be manufactured by preparing paper as a wrapper and wrapping a tobacco filler in the paper. Alternatively, a tobacco rod part can be manufactured by preparing a cylindrical wrapper and filling the tobacco filler inside the wrapper. The cross-sectional shape of the cylindrical wrapper is not limited, and can be a circle, an ellipse, or a polygon.

[0057] 3.Characteristics The tobacco filler obtained by the manufacturing method of the present invention has particularly excellent expansion bulk. The expansion bulk is the volume per unit weight when a mass of tobacco filler (preferably shredded tobacco) is compressed with a certain force, and is also an index of bulk density. Specifically, it is calculated by the following formula from the height of a tobacco shred cylinder obtained after applying a load of 11.4 kg for 5 seconds to a measuring cylinder with a diameter of 95 mm into which a sample is placed. FP=(A×h5) / W [cm 3 / 100g] FP: bulkiness A: Cross-sectional area of ​​tobacco cylinder W: Weight of tobacco shreds h5: Height of the tobacco shredded cylinder at the end of loading

[0058] The tobacco rod portion of a flavor inhalation article (or smoking article) is mainly manufactured by wrapping a tobacco filler in a cylindrical paper wrapper. In general, users tend to prefer a tobacco rod portion that is relatively hard. One way to harden the tobacco rod portion is to increase the amount of tobacco filler, but increasing the amount of filler increases costs. However, a tobacco filler with high bulk expansion can provide a tobacco rod portion with the required hardness with a smaller amount of filler.

[0059] 3. Non-combustion heating type flavor inhalation product Examples of smoking articles include flavor inhalation articles that allow users to inhale to enjoy flavor, and smokeless tobacco (smokeless smoking articles) that allow users to directly inhale the product into the nasal cavity or oral cavity to enjoy flavor. Flavor inhalation articles can be broadly divided into combustion-type smoking articles, typified by conventional cigarettes, and non-combustion-type smoking articles. The tobacco rod portion of the present invention is used in non-combustion heating-type flavor inhalation articles that are used by heating, among non-combustion-type smoking articles.

[0060] The non-combustion heating type flavor inhalation article may be heated by a heating device separate from the article, or may be heated by a heating device integrated with the article. In the former flavor inhalation article (separate type), the non-combustion heating type flavor inhalation article and the heating device are collectively referred to as a "non-combustion heating type smoking system." An example of a non-combustion heating type smoking system will be described below with reference to Figs. 6 and 7.

[0061] Fig. 6 is a cross-sectional schematic diagram showing an example of a non-combustion heating-type smoking system, showing a state before the heater 12 is inserted into the tobacco rod portion 20A of the non-combustion heating-type flavor inhalation article 20. When in use, the heater 12 is inserted into the tobacco rod portion 20A. Fig. 7 is a cross-sectional view of the non-combustion heating-type flavor inhalation article 20.

[0062] 6, the non-combustion heating smoking system includes a non-combustion heating flavor inhalation article 20 and a heating device 10 that heats the tobacco rod portion 20A from the inside. However, the non-combustion heating smoking system is not limited to the configuration shown in FIG.

[0063] The heating device 10 shown in Fig. 6 includes a body 11 and a heater 12. Although not shown, the body 11 may include a battery unit and a control unit. The heater 12 may be an electric resistance heater, and is inserted into the tobacco rod portion 20A to heat the tobacco rod portion 20A.

[0064] In the figure, an embodiment in which the tobacco rod portion 20A is heated from the inside is shown, however, the embodiment of the non-combustion heating type flavor inhalation article 20 is not limited to this, and in another embodiment, the tobacco rod portion 20A is heated from the outside.

[0065] The heating temperature by the heating device 10 is not particularly limited, but is preferably 400° C. or less, more preferably 50 to 400° C., and even more preferably 150 to 350° C. The heating temperature refers to the temperature of the heater 12 of the heating device 10.

[0066] As shown in Fig. 7, the non-combustion heating type flavor inhalation article 20 (hereinafter simply referred to as "flavor inhalation article 20") has a cylindrical shape. The circumferential length of the flavor inhalation article 20 is preferably 16 mm to 27 mm, more preferably 20 mm to 26 mm, and even more preferably 21 mm to 25 mm. The overall length (horizontal length) of the flavor inhalation article 20 is not particularly limited, but is preferably 40 mm to 90 mm, more preferably 50 mm to 75 mm, and even more preferably 50 mm to 60 mm.

[0067] The flavor inhalation article 20 is composed of a tobacco rod portion 20A, a filter portion 20C constituting a mouthpiece, and a connecting portion 20B connecting these together.

[0068] The tobacco rod portion 20A is cylindrical, and its total length (length in the axial direction) is, for example, preferably 5 to 100 mm, more preferably 10 to 50 mm, and even more preferably 10 to 25 mm. The cross-sectional shape of the tobacco rod portion 20A is not particularly limited, and may be, for example, circular, elliptical, polygonal, etc.

[0069] The tobacco rod portion 20A has a tobacco filler 21 and a wrapper 22 wrapped around the tobacco filler 21. The wrapper 22 may be a tobacco sheet made of the tobacco filler of the present invention.

[0070] The filter portion 20C has a cylindrical shape. , Se A rod-shaped first segment 25 composed of filled cellulose acetate fiber, and the same Habit The first segment 25 is located on the tobacco rod portion 20A side. The first segment 25 may have a hollow portion. The second segment 26 is located on the mouthpiece side. The second segment 26 is solid. The first segment 25 is a first filling layer. (SThe second segment 26 is composed of a first packed layer 25a (cellulose acetate fiber) and an inner plug wrapper 25b wound around the first packed layer 25a. (S The first segment 25 and the second segment 26 are connected by an outer plug wrapper 27. The outer plug wrapper 27 is bonded to the first segment 25 and the second segment 26 by a vinyl acetate emulsion adhesive or the like.

[0071] The length of the filter portion 20C can be, for example, 10 to 30 mm, the length of the connecting portion 20B can be, for example, 10 to 30 mm, the length of the first segment 25 can be, for example, 5 to 15 mm, and the length of the second segment 26 can be, for example, 5 to 15 mm. These lengths of each segment are merely examples and can be changed as appropriate depending on the manufacturing suitability, the required quality, the length of the tobacco rod portion 20A, etc.

[0072] For example, the first segment 25 (center hole segment) is composed of a first packed layer 25a having one or more hollow portions, and an inner plug wrapper 25b that covers the first packed layer 25a. The first segment 25 has a function of increasing the strength of the second segment 26. The first packed layer 25a of the first segment 25 is packed with, for example, cellulose acetate fibers at a high density. A plasticizer containing triacetin is added to the cellulose acetate fibers in an amount of, for example, 6 to 20% by weight based on the weight of the cellulose acetate, and the fibers are hardened. The hollow portion of the first segment 25 has an inner diameter of, for example, φ1.0 to φ5.0 mm.

[0073] The first packed layer 25a of the first segment 25 may be configured with, for example, a relatively high fiber packing density, or may be equivalent to the fiber packing density of the second packed layer 26a of the second segment 26 described later. Therefore, during inhalation, air and aerosol flow only through the hollow portion, and almost no air or aerosol flows through the first packed layer 25a. For example, when it is desired to reduce the loss of aerosol components due to filtration in the second segment 26, the length of the second segment 26 can be shortened and the first segment 25 can be lengthened accordingly.

[0074] Replacing the shortened second segment 26 with the first segment 25 is effective for increasing the delivery amount of the aerosol components. Since the first packed layer 25a of the first segment 25 is a fiber packed layer, the feel from the outside during use does not cause discomfort to the user.

[0075] The second segment 26 is composed of a second packed layer 26a and an inner plug wrapper 26b that covers the second packed layer 26a. The second segment 26 (filter segment) is packed with cellulose acetate fibers at a general density and has general filtering performance for filtering aerosol components.

[0076] The filtering performance for filtering the aerosol (mainstream smoke) emitted from the tobacco rod portion 20A may be different between the first segment 25 and the second segment 26. At least one of the first segment 25 and the second segment 26 may contain a flavoring. The structure of the filter portion 20C is arbitrary, and may be a structure having a plurality of segments as described above, or may be composed of a single segment. The filter portion 20C may also be composed of one segment. In this case, the filter portion 20C may be composed of either the first segment or the second segment.

[0077] The connecting part 20B has a cylindrical shape. The connecting part 20B has a cardboard tube 23 formed into a cylindrical shape using, for example, cardboard. The connecting part 20B may be filled with a cooling member for cooling the aerosol. An example of the cooling member is a sheet of a polymer such as polylactic acid, which can be folded and filled. Furthermore, a support part for suppressing the position of the tobacco rod part 20A from fluctuating may be provided between the tobacco rod part 20A and the connecting part 20B. The support part can be made of a known material such as a center hole filter like the first segment 25.

[0078] The wrapper 28 is wrapped around the outside of the tobacco rod portion 20A, the connecting portion 20B, and the filter portion 20C in a cylindrical shape to integrally connect them. A vinyl acetate emulsion adhesive is applied to the entire or nearly entire surface of one surface (inner surface) of the wrapper 28, except for the vicinity of the ventilation hole portion 24. The multiple ventilation hole portions 24 are formed by laser processing from the outside after the tobacco rod portion 20A, the connecting portion 20B, and the filter portion 20C are integrated by the wrapper 28.

[0079] The ventilation hole section 24 has two or more through holes penetrating the connecting section 20B in the thickness direction. The two or more through holes are formed so as to be radially arranged when viewed from an extension line of the central axis of the flavor inhalation article 20. In this embodiment, the ventilation hole section 24 is provided in the connecting section 20B, but may be provided in the filter section 20C. In addition, in this embodiment, the two or more through holes of the ventilation hole section 24 are arranged in one row at a certain interval on one ring, but may be arranged in two rows at a certain interval on two rings, or one or two rows of the ventilation hole section 24 may be arranged discontinuously or irregularly. When a user holds the mouthpiece in his / her mouth and inhales, outside air is taken into the mainstream smoke through the ventilation hole section 24. However, the ventilation hole section 24 may not be provided. EXAMPLES

[0080] [Preparation of reconstituted tobacco sheets] Reconstituted tobacco sheets were prepared using a papermaking method. The ratio of each component in the finished product is shown in Table 1, and the basic physical properties of the finished product are shown in Table 2.

[0081] [Table 1]

[0082] [Table 2]

[0083] [Bulkiness measurement method] The swelling measurement was carried out according to the following procedure. <Device> Measuring instrument name: Factory Densimeter D51 (version 12 Rev 27 / 03 / 02) Measuring device manufacturer: Borgwaldt (Germany) <Work environment> Temperature 22℃, relative humidity 60% <Measurement conditions> Tobacco Container Size Inner diameter: 95mm Capacity: Approx. 1.5 liters Loading weight: 11.4kg Descending speed: approx. 30mm / s Loading interval: 5 seconds Interval time: 10 seconds

[0084] <Definition> The bulkiness is calculated from the height of the tobacco shred cylinder after placing a load of 11.4 kg in a measuring cylinder with a diameter of 95 mm and placing the sample inside for 5 seconds. In other words, it represents the volume per unit weight of shredded tobacco when a chunk of shredded tobacco is compressed with a certain force. FP=(A×h5) / W [cm 3 / 100g] FP: bulkiness A: Cross-sectional area of ​​tobacco cylinder W: Weight of tobacco shreds h5: Height of the tobacco shredded cylinder at the end of loading

[0085] [Comparative Example 1] The reconstituted tobacco sheet (name: Sheet 1) was cut using a shredder (Hauni, name KT2L) with a shred width setting of 0.8 mm. The length of the shredded pieces varied, but was in the range of approximately 5.0 mm to 30.0 mm. The moisture content and bulkiness of the reconstituted tobacco sheet after shredding were measured. The moisture content was calculated as the weight loss when the sheet was stored in an oven at 105°C for 1 hour. The results are shown below. Moisture: 13.7 [wt%] Bulking: 303cm 3 / 100g]

[0086] [Comparative Example 2] The reconstituted tobacco sheet was shredded in the same manner as in Comparative Example 1, except that the type of reconstituted tobacco sheet was changed to Sheet 2, and the swelling property was evaluated. The results are shown below. The results are as follows; Moisture: 13.2 [wt%] Bulkyness: 342[cm 3 / 100g]

[0087] [Example 1] <Humidification> The reconstituted tobacco sheet (name: Sheet 1) was placed in a cylindrical container (inner diameter 0.9 m, length 2.0 m) equipped with a moisture supplying device, a heating device, and a rotating device, and humidified by adding water vapor. The product temperature of the reconstituted tobacco sheet at this time was approximately 50 to 70°C. When adding steam and hot water, exhaust was performed from the cylinder. The moisture content of the reconstituted tobacco sheet after humidification was 18.0% by weight.

[0088] <Cutting> The moistened tobacco sheet was cut into pieces using a cutting machine (Hauni, KT2L) with a cutting width of 0.8 mm. The length of the cut pieces varied, but was in the range of approximately 5.0 mm to 30.0 mm. The moisture content was 18.0% by weight.

[0089] <Drying> The shredded tobacco sheet was dried using an airflow dryer (manufactured by Garbuio / Dickinson, named EVA Dryer 400).

[0090] <Evaluation> The moisture content and bulkiness of the reconstituted tobacco sheet after air drying were measured. The moisture content was calculated by placing the sheet in an oven at 105°C for 1 hour and calculating the weight loss as the moisture loss. The results are shown below. Moisture: 13.3 [wt%] Bulking: 354cm 3 / 100g]

[0091] [Example 2] The reconstituted tobacco sheet was shredded in the same manner as in Example 1, except that the type of reconstituted tobacco sheet was changed to Sheet 2, and the swelling property was evaluated. The results are shown below. Moisture: 13.2 [wt%] Bulking: 371 [cm 3 / 100g] The above results are summarized in the table below.

[0092] [Table 3]

[0093] Both of the reconstituted tobacco sheets produced by the method of the present invention had higher swelling properties than the reconstituted tobacco sheets produced in the comparative example. Since the swelling property value is strongly affected by the shape of the tobacco at the time of measuring the swelling property, in this example, all the shapes of the tobacco shreds were made the same. In addition, since the moisture content in the tobacco shreds also affects the swelling property, in this example, the moisture content of the tobacco shreds was made as uniform as possible. There is an empirical formula for correcting the tobacco moisture content in the swelling property, but in this example, the difference in moisture content between each level was small, and it was determined that moisture correction was unnecessary.

Claims

1. A tobacco filler containing a reconstituted tobacco sheet, the tobacco filler having a moisture content of 5 to 15% by weight being humidified and then dried; Step 2 is to prepare a tobacco rod portion in which the tobacco filler obtained in step 1 is filled in a cylindrical wrapper; A method for manufacturing a tobacco rod portion for a non-combustion heating-type flavor inhalation article, comprising:

2. The method of claim 1 , wherein the tobacco filler comprises an aerosol-forming substrate.

3. The method of claim 2 further comprising the step of cutting the tobacco filler into strands.

4. the tobacco filler contains a reconstituted tobacco sheet A and a reconstituted tobacco sheet B; the step 1 includes moistening each of the reconstituted tobacco sheets, mixing the mixture, and drying the mixture, or moistening each of the reconstituted tobacco sheets, drying the mixture, and then mixing the reconstituted tobacco sheets; The method according to any one of claims 1 to 3.

5. the tobacco filler comprises a reconstituted tobacco sheet A and a lamina; the step 1 includes moistening the reconstituted tobacco sheet A and the lamina, respectively, and then mixing the mixture and drying the mixture, or moistening the reconstituted tobacco sheet A and the lamina, respectively, and then drying the mixture, and then mixing the reconstituted tobacco sheet A and the lamina, The method according to any one of claims 1 to 3.

6. The method of any one of claims 1 to 5, further comprising the step of mixing the tobacco filler with a non-tobacco material.

7. The method according to any one of claims 1 to 6, further comprising the step of adding an additive to the tobacco filling.

8. The method of claim 4 or claim 6 which recites claim 4, further comprising a step of adding an additive to either or both of the reconstituted tobacco sheet A and the reconstituted tobacco sheet B.

9. A method according to claim 5, or claim 6 which relies on claim 5, further comprising the step of adding an additive to either or both of the reconstituted tobacco sheet and the lamina.

10. The method according to any one of claims 7 to 9, further comprising the step of measuring the components of the tobacco filler and adjusting the type or amount of the additive based on the measurement results.

11. The components of the reconstituted tobacco sheet A are measured; Based on the measurement results, the type of reconstituted tobacco sheet B or lamina is determined. The method according to claim 4 or 5.

12. The components of the reconstituted tobacco sheet A are measured; Based on the measurement results, The type or amount of additives added to the reconstituted tobacco sheet B, or determining the type or amount of additive to be added to the lamina; The method according to claim 7 which recites claim 4.

13. The method according to any one of claims 1 to 3, 6 and 7, wherein the tobacco filler is humidified so that the moisture content therein is 15 to 25% by weight.

14. The method according to any one of claims 4 to 12, wherein the reconstituted tobacco sheet is humidified so that the moisture content therein is 15 to 25% by weight.

15. The manufacturing method according to any one of claims 1 to 14, wherein the drying is carried out by an air flow drying method or an annular drying method.

16. The method according to any one of claims 4 to 15, wherein the reconstituted tobacco sheet is a paper-formed sheet, a cast sheet, or an extruded sheet.

17. The method according to claim 15, wherein the humidification is carried out in a cylindrical device.

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