Heated tobacco cartridges

Abstract

To provide a heated tobacco cartridge preventing impurities in an air flow from being concentrated in a specific area by distributing the air flow flowing through a filter member.SOLUTION: A heated tobacco cartridge 1 includes a filler assembly 10 generating aerosol by being heated by a heating element 50, a filter member 14 having a mouthpiece 14a and filtering the generated aerosol, a packaging member 16 wound around an outer periphery of the filler assembly 10 and the filter member 14, and one or more flow change parts 30 for changing radial vector components of the air flow including the aerosol flowing from the filler assembly 10 toward the mouthpiece 14a side of the filter member 14.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cartridge for heated tobacco products that is attached to a heated smoking device equipped with an electrically controlled heating element and used for smoking. [Background technology]

[0002] In recent years, tobacco products that use a method of heating a tobacco cartridge containing tobacco ingredients without using a flame and inhaling the vaporized tobacco ingredients have become widely known. In addition, due to the diversification of preferences, cartridge products that allow users to enjoy the aroma and flavor of plants that do not contain tobacco ingredients, like cigarettes, without using a flame, are also becoming known.

[0003] For example, Patent Document 1 discloses an aerosol cooling element for an aerosol-generating article. Specifically, it states that "the aerosol cooling element includes a gathered sheet of a biodegradable polymer material" (see claims). The aerosol-generating article, which is a cartridge for heated tobacco, has an aerosol-forming substrate, a spacer element, an aerosol cooling element, and a filter arranged in this order from the tip, and these are wrapped in cigarette paper. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5877618 Summary of the Invention [Problem to be solved by the invention]

[0005] When the aerosol-forming substrate, which is a filler accumulation, is heated by the heating element of the heated smoking device, an airflow containing the aerosol is generated and flows toward the filter element having the mouthpiece. Because the airflow tends to gather toward the center, impurities tend to concentrate in the center of the filter element as the smoker smokes repeatedly. The concentration of impurities in a specific area of ​​the filter element can affect the fluidity of the airflow or change the taste. Therefore, it is desirable to filter impurities from the airflow using the entire filter element.

[0006] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a cartridge for heated tobacco products that disperses the airflow flowing through the filter member so that impurities in the airflow do not concentrate in a specific area. [Means for solving the problem]

[0007] In order to solve the above problem, the heated tobacco cartridge of the present invention is a heated tobacco cartridge that is attached to a heated smoking device equipped with an electrically controlled heating element and used for smoking, and is characterized by comprising: a filler accumulation body that generates an aerosol when heated by the heating element; a filter member that has a mouthpiece and filters the generated aerosol; and a packaging member wrapped around the outer periphery of the filler accumulation and the filter member, and having one or more flow change sections that change the radial vector component of the airflow containing the aerosol that flows from the filler accumulation toward the mouthpiece side of the filter member.

[0008] In addition, the heated tobacco cartridge of the present invention is characterized in that the flow change portion changes the radial vector component of the airflow containing the aerosol in a direction from the inner side to the outer side.

[0009] In addition, the heated tobacco cartridge of the present invention is characterized in that the flow change portion is arranged between the filler accumulation body and the filter member in the longitudinal direction of the heated tobacco cartridge, and the flow change portion has an air flow guide portion formed so that the cross-sectional area increases from the filler accumulation body side toward the filter member side.

[0010] In addition, the heated tobacco cartridge according to the present invention is characterized in that the airflow guide portion has an uneven portion on the surface that comes into contact with the airflow.

[0011] In addition, the heated tobacco cartridge of the present invention is characterized in that the flow change portion has a support portion that supports the filler accumulation adjacent to it, and the support portion has a through hole that communicates with the air flow path when the air flow guide portion is positioned between the filler accumulation and the filter member.

[0012] In addition, the heated tobacco cartridge of the present invention is characterized in that the filter member has the flow change portion at the end on the filler accumulation side, and the flow change portion has an airflow guide portion that is formed so that the cross-sectional area increases from the filler accumulation side of the filter member toward the mouthpiece side.

[0013] Furthermore, the heated tobacco cartridge according to the present invention is characterized in that the filter members are a first filter member on the inner periphery and a second filter member on the outer periphery, which have different absorption rates for the air flow, and are separated by a separation section that does not allow the air flow to pass through, and the first filter member forms the flow change section with an air flow guide section that is formed so that the cross-sectional area increases from the filler accumulation side toward the mouthpiece side.

[0014] Furthermore, the heated tobacco cartridge of the present invention is characterized in that the flow change section is arranged between the filler accumulation body and the filter member, the flow change section has a first flow path member and a second flow path member adjacent to each other along the longitudinal direction, the first flow path member has a first through hole that penetrates in the longitudinal direction and through which the airflow flows, the second flow path member is arranged at a circumferential position different from the first through hole and has a second through hole that penetrates in the longitudinal direction and through which the airflow flows, and a convection space section is formed in the portion where the first flow path member and the second flow path member are adjacent, which connects the first through hole and the second through hole and is arranged to flow the airflow from the first through hole toward the inner circumferential side.

[0015] In addition, the heated tobacco cartridge of the present invention is characterized in that the convection space is formed so as to direct the airflow from the first through hole that flows toward the inner periphery to the second through hole, and the second through hole is arranged so as to direct the airflow from the convection space toward the outer periphery.

[0016] In addition, the heated tobacco cartridge according to the present invention is characterized in that the second flow path member has a recessed portion on the filter member side of the convection space portion. [Effects of the Invention]

[0017] According to the heated tobacco cartridge of the present invention, the flow change portion changes the radial vector component of the aerosol-containing airflow, thereby leveling the airflow within the filter element. This allows the airflow to flow using the entire volume of the filter element, preventing impurities from concentrating in a specific area. Furthermore, the airflow's fluidity can be improved to facilitate inhalation, and the impact of impurities on the airflow can be reduced. Additionally, changes in taste due to impurities concentrating in a specific area of ​​the filter element can be reduced. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a cross-sectional view of a heated tobacco cartridge having a filler accumulation body in this embodiment. [Figure 2] FIG. 2 is a cross-sectional view showing a usage form of a heated tobacco cartridge. [Figure 3] The side view (Fig. 3(a)) and front view (Fig. 3(b)) of the packing. [Figure 4] FIG. [Figure 5] 5(a) is a cross-sectional view taken along line AA in FIG. 1, and FIG. 5(b) is a cross-sectional view taken along line BB in FIG. 1. [Figure 6] FIG. 10 is an enlarged cross-sectional view of the vicinity of a flow change portion of a second embodiment. [Figure 7] FIG. 10 is an enlarged cross-sectional view of the vicinity of a flow change portion of a fourth embodiment. [Figure 8] FIG. 10 is an enlarged cross-sectional view of the vicinity of a flow change portion of a fifth embodiment. [Figure 9] FIG. 13 is an enlarged cross-sectional view of the vicinity of a flow change portion of the seventh embodiment. [Figure 10] FIG. [Figure 11] FIG. 13 is a cross-sectional view of a heated tobacco cartridge having a flow change portion according to an eighth embodiment. [Figure 12] FIG. 13 is a cross-sectional view of a heated tobacco cartridge having a flow change portion according to a ninth embodiment. [Figure 13] FIG. [Figure 14] FIG. 19 is a cross-sectional view of a heated tobacco cartridge having a flow change portion according to the tenth embodiment. [Figure 15] FIG. 19 is a cross-sectional view of a heated tobacco cartridge having a flow change portion according to the eleventh embodiment. [Figure 16] 16(a) is a view of the first flow path member seen from the filter member side, and FIG. 16(b) is a view of the second flow path member seen from the packing accumulation side. [Figure 17] These are cross-sectional views of the flow change portion, a cross-sectional view taken along the AA section of Figure 16(b) (Figure 17(a)) and a cross-sectional view taken along the BB section of Figure 16(b) (Figure 17(b)). [Figure 18] FIG. 10 is a cross-sectional view of a flow change portion when a recess is provided in a first flow path member. [Figure 19]Cross-sectional view of a heated tobacco cartridge having a flow change portion according to a twelfth embodiment [Figure 20] FIG. [Figure 21] FIG. 13 is a cross-sectional view of a heated tobacco cartridge having a flow change portion according to the thirteenth embodiment. [Figure 22] 22 is a cross-sectional view taken along the line AA in FIG. 21. [Figure 23] 22 is an enlarged view of the vicinity of the boundary between the packing accumulation and the flow change section in FIG. 21. FIG. [Figure 24] FIG. 14 is a cross-sectional view of a heated tobacco cartridge having a flow change portion according to the fourteenth embodiment. [Figure 25] 25 is a cross-sectional view taken along the line AA in FIG. 24. [Figure 26] FIG. 25 is an enlarged view of the vicinity of the boundary between the packing accumulation and the flow change section in FIG. 24. DETAILED DESCRIPTION OF THE INVENTION

[0019] (Overall structure of a heated tobacco cartridge) An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a cross-sectional view of a heated tobacco cartridge 1 having a filler accumulation 10 according to this embodiment. As shown in this figure, the heated tobacco cartridge 1 includes a substantially cylindrical filler accumulation 10 filled with a large amount of filler 20, a support member 12 through which airflow from the filler accumulation 10 can pass, a flow change section 30 that changes the direction of the airflow from the support member 12, and a filter member 14 having a mouthpiece 14a at one end. These are arranged along the longitudinal direction and integrally formed by being wrapped in a sheet-like packaging member 16. The packaging member 16 can be made of paper or the like. A resin material can be used as the material for the flow change section 30. Examples of resin materials that can form the flow change section 30 include polypropylene, polylactic acid, and silicone. However, the flow change section 30 may also be formed of other resin materials, or materials other than resin materials, such as wood or metal (e.g., aluminum). The directional vector of the aerosol-containing airflow flowing through the heated tobacco cartridge 1 from the filler accumulation body 10 toward the mouthpiece 14a of the filter member 14 can be decomposed into an axial vector component, which is the component in the central axis direction along the length of the heated tobacco cartridge 1; a radial vector component, which is the component in the radial direction of the heated tobacco cartridge 1; and a circumferential vector component, which is the component in the circumferential direction of the heated tobacco cartridge 1. In this specification, the term "radial vector component" refers to the component obtained by decomposing the directional vector of the aerosol-containing airflow flowing through the heated tobacco cartridge 1 into a radial direction. The radial vector component of the airflow can be either positive or negative. For example, if the direction from the center to the outer periphery of the heated tobacco cartridge 1 is defined as the positive direction, the radial vector component of the airflow can also be a negative direction, which is the direction from the outer periphery toward the center. Furthermore, if the direction of flow from the filler accumulation body 10 toward the mouthpiece 14a of the filter member 14 is considered to be the positive direction, the axial vector component may also be in the negative direction from the mouthpiece 14a toward the filler accumulation body 10 in some parts of the heated tobacco cartridge 1.

[0020] In this embodiment, the heated tobacco cartridge 1 is formed with a diameter of 6.5 mm to 7.5 mm and a length of 40 mm to 80 mm. If the outer diameter of the heated tobacco cartridge 1 is set in the range of 6.5 to 7.5 mm, the diameter will be smaller than the insertion part 51 provided in the heated tobacco smoking device 2, into which the heated tobacco cartridge 1 is inserted, making it easier to insert the heated tobacco cartridge 1 into the heated tobacco smoking device 2. If the length of the heated tobacco cartridge 1 is set in the range of 40 to 80 mm, the length will be longer than the length of the insertion part 51 provided in the heated tobacco smoking device 2, which receives the heated tobacco cartridge 1. Therefore, even when the heated tobacco cartridge 1 is inserted into the heated tobacco smoking device 2, the mouthpiece 14a can be exposed from the heated tobacco smoking device 2, ensuring the length necessary for a smoker to smoke.

[0021] (Configuration of support member) The support member 12 inhibits movement of the packing material collection 10 toward the support member 12, and allows the airflow containing aerosols generated in the packing material collection 10 to flow toward the filter member 14. The support member 12 is provided, for example, in a cylindrical, solid shape, and is disposed between the packing material collection 10 and the filter member 14 so that its axial direction is along the central axis. The support member 12 is formed, for example, with an outer diameter of 6.5 mm to 7.5 mm and a length along the central axis of 50 mm or less. Note that the support member 12 may have dimensions different from those described above, as appropriate, depending on its function and configuration.

[0022] The support member 12 is made of a resin material. Examples of resin materials that can be used to form the support member 12 include polypropylene, polylactic acid, and silicone. However, the support member 12 may be made of other resin materials, or materials other than resin materials such as wood or metal (aluminum, etc.) that have a greater cooling effect.

[0023] (Configuration of filter member) The filter member 14 is formed in a cylindrical shape, for example, with a diameter of 6.5 mm to 7.5 mm and a length along the central axis of 50 mm or less. The filter member 14 is formed using, for example, paper. The filter member 14 may also be formed into a cylindrical shape by rolling up a sheet-like member made of paper, or may include a cellulose acetate filter or the like that removes fine particles. The filter member 14 has the function of filtering out some of the fine particles in the water vapor and aerosol generated in the packing assembly 10.

[0024] (Configuration of packing aggregate) The filler assembly 10 is formed by bundling elongated filler materials 20 along their length and wrapping them in a sheet-like packaging material 25 to form a generally cylindrical shape. The filler materials 20 are made from non-tobacco plants. Details of the filler materials 20 will be described later.

[0025] The filler accumulation 10 has a length of 10 to 25 mm. Setting the length of the filler accumulation 10 to 10 mm or more ensures the minimum length required for inserting the heating element 50 of the heated smoking device 2. Setting the length of the filler accumulation 10 to 25 mm or less ensures a length sufficient to allow the heat of the heating element 50 of the heated smoking device 2 to reach every corner of the filler 20. The heated tobacco cartridge 1 may have dimensions different from those described above, depending on the shape of the heated smoking device 2.

[0026] The outer diameter of the filler accumulation body 10 is equal to the outer diameters of the support member 12 and the filter member 14, and is a generally constant value along the central axis. This outer diameter is preferably in the range of 4.0 mm to 7.5 mm, and more preferably in the range of 5.0 mm to 7.0 mm. Setting the outer diameter to 4.0 mm or more makes it possible to generate the minimum required amount of aerosol. Setting the outer diameter to 5.0 mm or more makes it possible to generate a sufficient amount of aerosol. Setting the outer diameter to 7.5 mm or less makes it possible to attach the filler accumulation body 10 to the heated smoking device 2. Setting the outer diameter to 7.0 mm or less makes it possible to easily attach the filler accumulation body 10 to the heated smoking device 2.

[0027] (How heated tobacco cartridges are used) FIG. 2 shows a cross-sectional view illustrating a usage form of the heated tobacco cartridge 1. The heated tobacco cartridge 1 is attached to a heated tobacco smoking device 2 for use. The heated tobacco smoking device 2 has an insertion section 51 into which the heated tobacco cartridge 1 is inserted. The insertion section 51 is provided with a needle- or blade-shaped heating element 50 that is inserted into the filler accumulation 10 of the inserted heated tobacco cartridge 1. The heating element 50 is electrically controlled by a control unit provided inside the heated tobacco smoking device 2. The heating element 50 generates heat while inserted into the filler accumulation 10, thereby generating aerosol from the filler accumulation 10. In this state, a smoker can inhale airflow containing aerosol by inhaling through the filter member 14.

[0028] (Filling composition) FIG. 3 shows a side view (FIG. 3(a)) and a front view (FIG. 3(b)) of the packing 20. As described above, the packing 20 is formed in an elongated shape. Furthermore, the packing 20 is formed so that the dimension a in the long side direction is longer than the dimension b in the short side direction in a cross section perpendicular to the longitudinal direction. FIG. 4 shows a front view of the packing assembly 10. The packing assembly 10 is formed by stacking a large number of packings 20. Most of the packings 20 in the outer periphery are arranged along the circumferential direction. Most of the packings 20 in the central part have their long sides overlapping each other to form packing groups, and voids are formed between the packing groups.

[0029] Filler 20 is formed by mixing dried and crushed non-tobacco plant material with an aerosol former that generates an aerosol, microcrystalline cellulose, additives that add flavor, preservatives, adhesives or thickeners, etc., forming the mixture into a sheet, and then cutting it to a predetermined width and length. Note that filler 20 is not limited to a long shape and may have a variety of shapes. For example, it may be formed into a paste or granules.

[0030] When the packing material 20 is configured in a long shape, the cross section perpendicular to the central axis is substantially rectangular, and the ratio of the long side to the short side of the cross section is preferably, for example, in the range of 1:1 to 30:1. The length of the long side is preferably in the range of 0.1 mm to 7.5 mm, more preferably in the range of 0.1 mm to 3.0 mm. The length of the short side is preferably in the range of 0.1 mm to 1.0 mm, more preferably in the range of 0.1 mm to 0.5 mm. Furthermore, the length of the packing material 20 is preferably substantially the same as the length of the packing material assembly 10. The length of the packing material 20 is preferably in the range of 10 mm to 25 mm, more preferably in the range of 10 mm to 20 mm. An example of the dimensions of such a packing material 20 is a long side of 1.5 mm, a short side of 0.3 mm, and a length of 12 mm.

[0031] Next, a description will be given of specific examples of raw materials used as the packing 20. The packing 20 is made of any one or a combination of the following raw materials.

[0032] The filler 20 is made from tobacco plants or non-tobacco plants. Tobacco plants include tobacco leaves, tobacco stems, expanded tobacco, homogenized tobacco, etc. Non-tobacco plants include plants other than tobacco plants. Preferred parts of non-tobacco plants include leaves, pulp, seeds, roots (scale roots, tuberous roots, etc.), stems, tubers, bark (stem bark, bark, etc.), flowers (petals, stamens, pistils, etc.), trunks, branches, etc.

[0033] In this specification, "plants" refers to a group of organisms, as opposed to animals, and includes not only organisms that have roots and live in a fixed location, such as grass and trees, but also algae such as microalgae and seaweed, and fungi such as mushrooms.

[0034] Filler 20 is prepared, for example, by mixing a dried and crushed non-tobacco plant material with an aerosol former that generates an aerosol, microcrystalline cellulose, flavor additives, preservatives, binders, thickeners, etc., as appropriate, and then crushing or classifying the mixture to form powder or granules, or shaping it into a paste. Furthermore, aerosol-forming substrate 23 is formed into a sheet, which is then cut into strips or rods of a predetermined width and length.

[0035] For example, when the non-tobacco plant part is a leaf, teas can be preferably used. Not only do different plants produce different teas, but even the same plant can produce different teas depending on the processing method. Specific examples include Japanese tea, black tea, Angelica keiskei tea, sweet tea, Gynostemma pentaphyllum tea, aloe tea, ginkgo leaf tea, oolong tea, turmeric tea, Quercus salicina tea, Eleuthero tea, plantain tea, persimmon leaf tea, chamomile tea, chamomile tea, Kawara Kesseki tea, quince tea, chrysanthemum tea, gymnema tea, guava tea, wolfberry tea, soft leaf tea, black bean tea, Gennoshoko tea, brown rice tea, burdock tea, comfrey tea, bifu tea, cherry blossom tea, Examples include saffron tea, shiitake mushroom tea, perilla tea, jasmine tea, ginger tea, horsetail tea, red pepper tea, Swertia japonica tea, buckwheat tea, elm tea, dandelion tea, sweet tea, Houttuynia cordata tea, Eucommia tea, sword bean tea, elderberry tea, Licorice tea, Job's tears tea, Habu tea, loquat leaf tea, Pu'er tea, safflower tea, pine needle tea, yerba mate tea, barley tea, Megusuri tea, Mugwort tea, eucalyptus tea, Monk fruit tea, rooibos tea, and bitter melon tea. Used tea leaves can be used for these teas. Using used tea leaves allows for the effective reuse of expensive teas.

[0036] Furthermore, extracts of the above-mentioned non-tobacco plants, so-called extracts and processed products, can also be used. The extracts may be in the form of liquid, starch syrup, powder, granules, solution, etc.

[0037] Examples of aerosol formers used as raw materials for the filler 20 include glycerin, propylene glycol, sorbitol, triethylene glycol, lactic acid, diacetin (glycerin diacetate), triacetin (glycerin triacetate), triethylene glycol diacetate, triethyl citrate, isopropyl myristate, methyl stearate, dimethyl dodecanedione, and dimethyl tetradecanedione. Of these, glycerin and propylene glycol are preferred.

[0038] The microcrystalline cellulose used as the raw material for the filler 20 is obtained, for example, by partially depolymerizing α-cellulose obtained from the pulp of a fibrous plant with an acid, and is obtained by removing the soluble portion from the cellulose and, if necessary, crystallizing the insoluble portion.

[0039] The microcrystalline cellulose may be in the form of powder or may be dispersed in a solvent such as water to form a suspension. In this case, a high-speed stirrer or a high-pressure homogenizer can be used to disperse the microcrystalline cellulose in the solvent.

[0040] Furthermore, if necessary, a flavor additive that adds flavor may also be preferably used as an ingredient of the filling 20. Examples of flavor additives include mint, cocoa, coffee, and black tea extracts, and powdered catechins from tea extracts. Preservatives that are used in food products are preferred, such as sorbic acid, potassium sorbate, benzoic acid, and sodium benzoate.

[0041] The filler 20 may contain menthol and a water-insoluble cross-linked polymer (preferably polyvinylpolypyrrolidone). Combining menthol with a water-insoluble cross-linked polymer can effectively prevent menthol from sublimating, allowing the menthol flavor to be maintained for a long period of time. Here, menthol is not limited to that obtained from natural products, but may also be a synthetic product. Peppermint, mint, peppermint oil, and other menthol-containing substances may also be used.

[0042] The flavor additive is provided in the filter member 14, for example, by impregnating the wall portion of the filter member 14. The manner in which the flavor additive is provided in the filter member 14 is not limited to this, and for example, the flavor additive may be provided in the filter member 14 by embedding a capsule in which the flavor additive is encapsulated in the wall portion of the filter member 14. Alternatively, a capsule in which the flavor additive is encapsulated may be disposed between the filter member 14 and the packing accumulation 20. When the flavor additive is encapsulated in a capsule, the smoker can break the capsule by pressing it with his or her finger, allowing the aromatic components of the flavor additive to volatilize at the desired time.

[0043] Furthermore, when the flavor additive is encapsulated in, for example, microcapsules, the encapsulated microcapsules may be provided in the filler accumulation 10. Of course, the microcapsules may also be provided in the support member 12.

[0044] Binders or thickeners as ingredients of the filling 20 include gums such as guar gum, xanthan gum, gum arabic, and locust bean gum; cellulose binders such as hydroxypropyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose, and ethyl cellulose; polysaccharides such as starch, organic acids such as alginic acid, sodium alginate, sodium carboxymethyl cellulose, caramel, agar, and conjugate base salts of organic acids such as pectin; and combinations thereof.

[0045] (Filling manufacturing process) The manufacturing process for filler 20 includes a drying and grinding process in which the main raw material, tobacco or non-tobacco plant, is dried and ground and weighed, etc.; a preparation process in which other raw materials are pre-treated and weighed, etc.; a mixing process in which the raw materials are mixed to form a composition; and a filler molding process in which the composition is molded.

[0046] In the drying and grinding process, the main raw material, tobacco or non-tobacco plant parts (e.g., leaves, seeds, dried fruit, stems, bark, roots, etc.), are ground into a specific powder to create a composition. It is preferable to adjust the moisture content to a level suitable for absorbing or supporting the aerosol former, water, and other ingredients that will be added later. The drying temperature is preferably between 60°C and 80°C. This range makes it easy to achieve the desired moisture content while avoiding the loss of essential flavor components. Furthermore, the drying and grinding process can also include a sieving process to sieve the ground material, allowing it to be adjusted to the desired particle size before being introduced into the mixing process.

[0047] In the preparation step, it is possible to prepare the raw materials necessary for producing the filler 20. The microcrystalline cellulose described above is weighed in the preparation step and then introduced into the mixing step.

[0048] In the mixing step, a conventional mixer can be used. For example, a preferred mode is to mix the raw materials in a mixing vessel while applying shear force with a stirring blade.

[0049] In the filler molding process, a composition containing various raw materials is molded into a thin sheet and then cut to form strip- or rod-shaped fillers 20. In this embodiment, multiple roll mills are used to create thin sheets. The use of multiple roll mills is preferable because it allows for compression by forcing the material between narrow rolls and shearing due to the difference in roll speeds, allowing for mixing and dispersion, while also allowing for a doctor blade to create a sheet of the desired thickness. Alternatively, a press roller or a press machine can be used to create the filler.

[0050] To obtain powdered or granular filler 20, the composition is preferably pulverized or classified as appropriate. The average particle diameter of powdered or granular filler 20 is preferably, for example, 0.1 to 3.0 mm, and more preferably 0.5 mm or less. The average particle diameter is determined, for example, by the sieving method described in JIS K 0069:1992. Specifically, this average particle diameter refers to the diameter corresponding to 50% of the mass obtained by integrating the mass of the particles with the largest openings in a test using multiple sieves. Alternatively, the particle diameter at 50% of the integrated value in the particle size distribution determined by laser diffraction / scattering may be used as the average particle diameter.

[0051] The filling may be formed by other means, such as forcing the composition through an orifice under pressure. Furthermore, in the filling, non-tobacco plants, aerosol formers, binders or thickeners, flavor additives, preservatives, or water may be added as needed.

[0052] The thickness of the sheet obtained in the filling molding step is preferably in the range of 0.1 mm to 1.0 mm, more preferably in the range of 0.1 mm to 0.5 mm. The obtained sheet is cut to a predetermined width using a cutter, a rotary cutter using a rotary blade, or the like.

[0053] Here, when providing adhesiveness to the surface of the filler 20, any means capable of providing adhesiveness may be used, but it is sufficient to attach the aforementioned binder to at least a portion of the surface. By providing adhesiveness, when strip- or rod-shaped filler 20 is combined with powder-, granular-, or pasty-type filler 20, the powder-, granular-, or pasty-type filler 20 can be stably held on the surface of the strip- or rod-shaped filler 20.

[0054] (Configuration of the flow change portion of the first embodiment) FIG. 5(a) shows a cross-sectional view taken along line AA in FIG. 1, and FIG. 5(b) shows a cross-sectional view taken along line BB in FIG. 1. The support member 12 has four through-holes 12a arranged along the circumferential direction. The shape, number, dimensions, and positions of the through-holes 12a in the support member 12 are not limited to those shown here, and can be appropriately set to suit the embodiment. The flow change section 30 has a solid conical shape and is arranged so that its top is located on the support member 12 side and its bottom is located on the filter member 14 side. In this example, the end of the flow change section 30 is in contact with the end face of the support member 12, but this is not limiting. For example, a hole that can accommodate the top of the flow change section 30 may be provided in the end face of the support member 12, allowing the flow change section 30 to fit into it.

[0055] As shown in FIG. 1 , the flow change section 30 has an airflow guide section 32 formed so that its cross-sectional area increases from the filler accumulation 10 side toward the filter element 14 side. Therefore, the flow path from the filter element 14-side outlet of the support member 12 to the filter element 14 narrows toward the center toward the filter element 14 side. This allows the flow change section 30 to change the radial vector component of the aerosol-containing airflow that flows along the length from the filler accumulation 10 toward the mouthpiece 14a of the filter element 14. Specifically, as shown by the arrows in the figure, the flow change section 30 changes the radial vector component of the airflow from the inner periphery toward the outer periphery. The flow change section 30 is formed so that its length in the longitudinal direction of the heated tobacco cartridge 1 is 70 mm or less. In this example, it is formed to, for example, 8.0 mm. Of course, the flow change section 30 may be formed to have a length other than this. The outer diameter of the flow change section 30 at the position where it contacts the end face of the filter member 14 is less than 7.5 mm, and preferably 3.5 mm to 5.0 mm. Setting the outer diameter to 3.5 mm or more allows more airflow to flow toward the outer periphery of the filter member 14. Setting the outer diameter to 5.0 mm or less ensures that the flow path is large enough for the airflow to flow.

[0056] The flow change section 30 causes the airflow from the packing accumulation 10 to flow into the outer peripheral region of the filter member 14 and then flow within the filter member 14 so as to gather toward the center toward the mouthpiece 14a. This allows the airflow to flow using the entire volume of the filter member 14, preventing impurities from concentrating in a single area. By leveling the airflow within the filter member 14 in this way, the fluidity of the airflow can be improved, making it easier to inhale, and the impact of impurities on the flow of the airflow can be reduced. This also prevents changes in taste caused by impurities concentrating in one part of the filter member 14.

[0057] (Configuration of the flow change portion of the second embodiment) FIG. 6 shows an enlarged cross-sectional view of the vicinity of the flow change section 60 of the second embodiment. The flow change section 60 is disposed between the support member 12 and the filter member 14 and has an airflow guide section 61 formed so that its cross-sectional area increases from the packing accumulation 10 side toward the filter member 14 side. The airflow guide section 61 has an uneven portion 62 on the surface that contacts the airflow containing aerosol. The flow change section 60 of this embodiment has the same configuration as the flow change section 30 of the first embodiment except for the uneven portion 62 on the surface of the airflow flow section 61. In this embodiment, the uneven portion 62 is formed to protrude from the surface of the airflow guide section 61. The uneven portion 62 may be formed continuously along the circumferential direction, or may be formed as multiple independent protrusions. The uneven portion 62 may also be concave. By providing the uneven portion 62 on the surface of the airflow guide section 61, the airflow can be introduced into the filter member 14 in a more diffused state, thereby guiding the airflow over a wider area of ​​the filter member 14. In Figure 6, two uneven portions 62 are arranged in the length direction of the heated tobacco cartridge 1, and each uneven portion 62 has a different protruding height from the surface of the airflow guide portion 61, but this is not limited to this and any protruding height suitable for diffusing the airflow can be set as appropriate. For example, the uneven portion 62 on the side closer to the support member 12 can be provided at a position that changes the airflow containing aerosol passing through the through-hole 12a provided in the support member 12 in a direction toward the outer periphery. Furthermore, the shape, number, dimensions, and position of the uneven portions 62 are not limited to this example and any shape, number, dimensions, and position can be set as appropriate.

[0058] (Configuration of the flow change portion of the third embodiment) The flow change section 30 of the first embodiment is formed so that its cross-sectional area increases from the packing accumulation 10 side toward the filter element 14 side, but the shape of the flow change section is not limited to this and may be formed in a substantially cylindrical shape whose cross-sectional area does not change from the packing accumulation 10 side toward the filter element 14. In this case, an uneven portion is formed on the circumferential surface of the flow change section, and the uneven portion can change the radial vector component of the airflow from the packing accumulation 10 in a direction from the inner periphery toward the outer periphery. The flow change section of this embodiment has the same configuration as the flow change section 60 of the second embodiment in all respects except that the flow change section is formed in a substantially cylindrical shape whose cross-sectional area does not change along the length.

[0059] (Configuration of the flow change portion of the fourth embodiment) FIG. 7 shows an enlarged cross-sectional view of the flow change section 80 and its vicinity in the fourth embodiment. In this embodiment, the support member 12 is not provided. The flow change section 80 includes a support section 83 that is adjacent to and supports the packing accumulation 10, and an airflow guide section 81 that is disposed between the support section 83 and the filter member 14. The support section 83 and the airflow guide section 81 are integrally formed. The length of the flow change section 80 in the longitudinal direction is 70 mm or less. In this embodiment, the length is, for example, 8.0 mm. Of course, the flow change section 80 may be formed with other length dimensions. The ratio of the length of the support section 83 to the airflow guide section 81 in the longitudinal direction is 1:9 to 9:1, and in this embodiment, the length is, for example, 1:9. Of course, the length ratio of the support section 83 to the airflow guide section 81 may be other ratios. The support section 83 has through-holes 84 arranged in the same manner as the support member 12. The shape, number, dimensions, and position of the through holes 84 can be appropriately set to suit the embodiment. The airflow guide portion 81 is formed so that its cross-sectional area increases from the packing accumulation 10 side toward the filter element 14 side. The airflow from the packing accumulation 10 passes through the through holes 84 of the support portion 83 and is guided by the airflow guide portion 81 to the outer peripheral region of the filter element 14. The outer diameter of the airflow guide portion 81 at the position where it contacts the end face of the filter element 14 is less than 7.5 mm, preferably 3.5 mm to 5.0 mm. Setting the outer diameter to 3.5 mm or more allows more airflow to flow toward the outer peripheral side of the filter element 14. Setting the outer diameter to 5.0 mm or less ensures a sufficient flow path size for the airflow. In this way, the flow change portion 80 may function as a support member. A non-through recess may be formed on the surface of the support portion 83 facing the packing accumulation 10. The airflow from the packing accumulation 10 enters the recesses, allowing some of the impurities contained in the airflow to adhere to the recesses. This reduces the amount of impurities that accumulate in the filter member 14. The shape, number, dimensions, and position of the non-through recesses can be set as appropriate depending on the embodiment.

[0060] (Configuration of the flow change portion of the fifth embodiment) FIG. 8 shows an enlarged cross-sectional view of the vicinity of the flow change section 90 of the fifth embodiment. Similar to the fourth embodiment, the flow change section 90 has an airflow guide section 91 and a support section 93, and the support section 93 has a through-hole 94. The shape, number, size, and position of the through-hole 94 are not particularly limited and can be set as needed. A concave-convex section 92 is formed on the surface of the airflow guide section 91. This allows the airflow from the packing material accumulation 10 to be further diffused. The flow change section 90 of this embodiment has the same configuration as the flow change section 80 of the fourth embodiment, except for the concave-convex section 92 on the surface of the airflow guide section 91. In FIG. 8, three concave-convex sections 92 are arranged along the length of the heated tobacco cartridge 1, and each of the concave-convex sections 92 protrudes from the surface of the airflow guide section 91 to the same height. However, this is not limited to this, and a protruding height suitable for diffusing the airflow can be set as appropriate. Furthermore, the shape, number, dimensions, and position of the uneven portion 92 are not limited to those in this example, and any shape, number, dimensions, and position can be set as appropriate. Furthermore, a non-through recess may be formed on the surface of the support portion 93 facing the packing accumulation 10. The airflow from the packing accumulation 10 enters the recess, allowing some of the impurities contained in the airflow to adhere to the recess. This allows the impurities that accumulate in the filter member 14 to be reduced.

[0061] (Configuration of the flow change portion of the sixth embodiment) The flow change section 90 of the fifth embodiment is formed so that its cross-sectional area increases from the packing accumulation 10 side toward the filter element 14 side. However, the shape of the flow change section is not limited to this. It may be a substantially cylindrical shape with a constant cross-sectional area from the packing accumulation 10 side toward the filter element 14. In this case, an uneven portion is formed on the peripheral surface of the flow change section, and the uneven portion can change the radial vector component of the airflow from the packing accumulation 10 from the inner circumferential side toward the outer circumferential side. Alternatively, a recess may be formed on the surface of the support section facing the packing accumulation 10. The airflow from the packing accumulation 10 enters the recess, allowing some of the impurities contained in the airflow to adhere to the recess. This can further reduce the amount of impurities that accumulate on the filter element 14. The flow change section 90 of this embodiment has the same configuration as the flow change section 80 of the fifth embodiment, except that the flow change section 90 is formed in a substantially cylindrical shape with a constant cross-sectional area along its length.

[0062] (Configuration of the flow change portion of the seventh embodiment) FIG. 9 shows an enlarged cross-sectional view of the vicinity of the flow change portion 110 of the seventh embodiment. The flow change portion 110 is disposed adjacent to the filter member 14. A convection space 113 is formed between the support member 12 and the flow change portion 110. The shape, number, size, and position of the through-holes in the support member 12 are not limited to those shown here and can be appropriately set depending on the embodiment. FIG. 10 shows a front view of the flow change portion 110. The flow change portion 110 has an inner circumferential hole 111 and an outer circumferential hole 112 in a peripheral region that does not include the center of the circular shape that forms its outer shape. The flow change portion 110 is formed to a length in the longitudinal direction of the heated tobacco cartridge 1 of 5.0 mm or less. In this example, it is formed to, for example, 3.0 mm. The outer diameter of the position where the flow change portion 110 contacts the end face of the filter member 14 is less than 7.5 mm, preferably the same as the outer diameter of the filter member 14. Of course, the flow change portion 110 may be formed to a length other than these. The inner circumferential hole 111 is a small-diameter, round through-hole located near the center of the flow change section 110. The outer circumferential hole 112 is an elliptical through-hole located more radially outward than the inner circumferential hole 111. Multiple inner circumferential holes 111 and multiple outer circumferential holes 112 are arranged circumferentially. As shown in FIG. 9 , airflow from the packing accumulation 10 flows into the convection space 113 and then into the filter element 14 via the flow change section 110. The inner circumferential hole 111 and the outer circumferential hole 112 of the flow change section 110 are both formed in an area that does not include the central axis of the filter element 14. Furthermore, the outer circumferential hole 112 has a larger area than the inner circumferential hole 111, so that more airflow is guided from the convection space 113 to the outer circumferential side of the filter element 14. This changes the radial vector component of the airflow from the inner circumferential side to the outer circumferential side, causing it to flow into the filter element 14. The provision of the convection space 113 makes it easier for the radial vector component of the airflow from the packing accumulation 10 to change, ensuring that the airflow can be reliably guided to the region on the outer periphery of the filter member 14. The shapes, number, dimensions, and positions of the inner circumferential hole portions 111 and the outer circumferential hole portions 112 are not particularly limited and can be set as needed. The length of the convection space 113 in the longitudinal direction can be set to a length appropriate for the embodiment within a range of 80 mm or less.

[0063] (Configuration of the flow change portion of the eighth embodiment) FIG. 11 shows a cross-sectional view of a heated tobacco cartridge 1 having a flow change portion 120 according to an eighth embodiment. A support member 12 is adjacent to the filler accumulation 10, and a filter member 14 is adjacent to the support member 12. The shape, number, dimensions, and position of the through holes in the support member 12 are not limited to those shown above and can be set appropriately depending on the embodiment. The filter member 14 has a flow change portion 120 at its end adjacent to the support member 12, which is on the filler accumulation 10 side. The flow change portion 120 has a conical airflow guide portion 121 formed so that the cross-sectional area of ​​the filter member 14 increases from the filler accumulation 10 side toward the mouthpiece 14a side. The flow change portion 120 is formed on the end face of the filter member 14 on the filler accumulation 10 side, at an angle greater than 0° and less than 90° with respect to the center line of the heated tobacco cartridge 1 in the longitudinal direction. By setting the angle of the flow change portion 120 to a value greater than 0° and less than 90°, a convection space can be formed between the filter element 14, the packing material assembly 10, and the packaging element 16. This allows a portion of the airflow to be guided toward the outer periphery along the end face of the filter element 14 in the convection space, thereby allowing a larger amount of airflow to flow toward the outer periphery of the filter element 14. The angle of the flow change portion 120 can be appropriately set to an angle suited to the embodiment. The airflow from the packing material assembly 10 passes through the support element 12, and the flow change portion 120 of the filter element 14 changes the radial vector component from the inner periphery toward the outer periphery, thereby directing the airflow toward the outer periphery of the filter element 14. In this manner, the flow change portion 120 can also be provided on the filter element 14. In this example, the end of the flow change portion 120 is configured to contact the end face of the support element 12, but this is not limiting. For example, a hole that can accommodate the top of the flow change portion 120 may be provided on the end face of the support element 12, allowing the end of the flow change portion 120 to fit into the hole.

[0064] (Configuration of flow change portion of 9th embodiment) FIG. 12 shows a cross-sectional view of a heated tobacco cartridge 1 having a flow change portion 130 according to a ninth embodiment. The filter member 14 includes a first filter member 131 on the inner periphery, a second filter member 132 on the outer periphery that has a higher airflow absorption rate than the first filter member 131, and a separation portion 133 disposed between the first filter member 131 and the second filter member 132 to prevent additional airflow. The separation portion 133 is formed of a material that is impermeable to airflow containing aerosols. Examples of materials that can form the separation portion 133 include paper, polypropylene, polylactic acid, silicone, wood, and metal (e.g., aluminum). FIG. 13 shows a front view of the filter member 14. The first filter member 131, the separation portion 133, and the second filter member 132 are concentrically arranged in the filter member 14 from the center toward the outer periphery. In this example, the separation portion 133 is formed integrally with the first filter member 131 by, for example, wrapping a sheet-like material around the outer periphery of the first filter member 131. However, the filter member 131 is not limited to a sheet-like member, and may be formed in a cylindrical shape with the first filter member fitted onto its inner circumferential surface. The second filter member 132 is formed in a cylindrical shape, with the outer circumferential surface of the separating portion 133 fitted onto the inner circumferential surface of the second filter member 132 to form the filter member 14. In this example, the area ratio of the cross sections perpendicular to the central axis of the first filter member 131 and the second filter member 132 is 1:9 to 9:1, and in this example, they are formed to be 1:1, for example. Of course, the area ratio of the first filter member 131 and the second filter member 132 may be other ratios.

[0065] The support member 12 and the filter member 14 are spaced apart in the longitudinal direction, forming a convection space 134. The convection space 134 and the filter member 14 form a flow change section 130. Airflow from the packing accumulation 10 enters the convection space 134, from which most of the airflow flows into the second filter member 132 on the outer periphery, which has a high airflow absorption rate, and the remaining airflow flows into the first filter member 131 on the inner periphery. In this way, more airflow flows from the convection space 134 toward the outer periphery of the filter member 14, allowing the radial vector component of the airflow to change direction from the inner periphery toward the outer periphery. The shape, number, dimensions, and position of the through holes in the support member 12 are not limited to these and can be set appropriately depending on the embodiment. The longitudinal length of the convection space 134 can be set appropriately within a range of 80 mm or less, depending on the embodiment.

[0066] (Configuration of flow change portion of 10th embodiment) FIG. 14 shows a cross-sectional view of a heated tobacco cartridge 1 having a flow change portion 140 of a tenth embodiment. The filter element 14 has a first filter element 141 on the inner periphery, a second filter element 142 on the outer periphery, and a separation portion 143, with the second filter element 142 having a higher airflow absorption rate than the first filter element 141. The support element 12 and the filter element 14 are adjacent to each other. The inner first filter element 141 forms the flow change portion 140 by an airflow guide portion 145 formed so that the cross-sectional area increases from the filler accumulation 10 side toward the mouthpiece 14a side. As a result, when the airflow from the filler accumulation 10 side flows from the support element 12 to the filter element 14, the flow change portion 140 changes the radial vector component from the inner periphery toward the outer periphery, and the airflow is guided by the outer periphery. The area ratio of the cross section perpendicular to the central axis of the first filter member 141 and the second filter member 142 is 1:9 to 9:1, and in this example, it is formed to be, for example, 1:1. Of course, the area ratio of the first filter member 141 and the second filter member 142 may be other ratios. The shape, number, dimensions, and position of the through holes in the support member 12 are not limited to these and can be set appropriately depending on the embodiment. The filter member 14 of this example has the same configuration as the filter member 14 of the ninth example, except that the first filter member 141 is provided with an airflow guide portion 145.

[0067] (Configuration of flow change portion of 11th embodiment) FIG. 15 shows a cross-sectional view of a heated tobacco cartridge 1 having a flow change section 150 of an eleventh embodiment. The flow change section 150 is disposed between the packing material accumulation 10 and the filter member 14, and has a first flow path member 151 and a second flow path member 155 adjacent to each other along the longitudinal direction. The outer diameters of the first flow path member 151 and the second flow path member 155 are 7.5 mm or less, and the combined length of adjacent first flow path members 151 and second flow path members 155 is 70 mm or less. In this example, the length ratio between the first flow path member 151 and the second flow path member 155 in the longitudinal direction is, for example, 15.0 mm. The ratio of the length between the first flow path member 151 and the second flow path member 155 is 1:9 to 9:1, and in this example, the length ratio is, for example, 1:1. Of course, the length and area ratio between the first flow path member 151 and the second flow path member 155 may be other lengths and ratios.

[0068] As shown in Figures 16(a) and 17(a), the first flow path member 151 has four first through holes 152 in the circumferential direction that penetrate the first flow path member 151 in the longitudinal direction and through which airflow flows. In this example, the cross section of the first through holes 152 in a cross section perpendicular to the central axis of the first flow path member 151 is approximately rectangular, and the size of each side is set to 3.5 mm or less. Of the end faces of the first flow path member 151, an open convection space portion 153 that connects the first through holes 152 to each other is formed on the end face adjacent to the second flow path member 155. In this example, the radial size of the convection space portion 153 is less than 7.5 mm in diameter, for example, 4.0 mm.

[0069] As shown in FIGS. 16(b) and 17(b), the second flow path member 155 has four second through holes 156 in the circumferential direction that penetrate the second flow path member 155 in the longitudinal direction and through which airflow flows. The second through holes 156 are arranged at angular positions in the circumferential direction that are different from the first through holes 152, with the first flow path member 151 and the second flow path member 155 adjacent to each other. In this example, the cross section of the second through holes 156 in a cross section perpendicular to the central axis of the second flow path member 155 is approximately rectangular, with each side measuring 3.5 mm or less. A convection space 157 is formed in the end face of the second flow path member 155 adjacent to the first flow path member 151, allowing the second through holes 156 to communicate with each other. In this example, the radial size of the convection space 157 is less than 7.5 mm in diameter, for example, 4.0 mm.

[0070] By arranging the first flow path member 151 and the second flow path member 155 adjacent to each other, the convection spaces 153 and 157 of both members are continuous, and the first through hole 152 and the second through hole 156 are connected. The combined length of the convection space 153 and the convection space 157 is less than 70 mm, for example, 3.0 mm. Of course, other lengths and ratios may be used. The airflow from the packing accumulation 10 flows into the first through hole 152 of the first flow path member 151. Because the first through hole 152 is located on the outer periphery of the flow change section 150, the airflow from the first through hole 152 flows toward the inner periphery of the convection spaces 153 and 157. The airflow that flows into the convection spaces 153 and 157 flows into the second through hole 156. Since the second through-holes 156 are located on the outer periphery side in the flow change section 150, the airflow flowing from the convection spaces 153, 157 to the second through-holes 156 flows toward the outer periphery side. In this way, the flow change section 150 changes the radial vector component of the airflow in the convection spaces 153, 157, and allows the airflow to flow into the outer periphery of the filter member 14.

[0071] The number, shape, dimensions and positions of the first through holes 152 and the second through holes 156 in the circumferential direction, and the angle formed between the first through holes 152 and the second through holes 156 in the circumferential direction are not limited to this example and can be set arbitrarily.

[0072] Furthermore, the convection space 157 of the second flow path member 155 forms a recess 158 in the center of the second flow path member 155. The airflow that has flowed into the convection space 157 collides with a wall surface 158a of the recess 158. This causes some of the impurities in the airflow to adhere to the wall surface 158a, thereby reducing the impurities that reach the filter member 14.

[0073] 18, a recess 154 may be provided on the end surface of the first flow path member 151 on the side of the packing accumulation 10. This allows some of the impurities contained in the airflow from the packing accumulation 10 to adhere to the recess 154.

[0074] (Configuration of flow change portion of 12th embodiment) Next, the flow change section 160 of the twelfth embodiment will be described. FIG. 19 shows a cross-sectional view of a heated tobacco cartridge 1 having the flow change section 160 of the twelfth embodiment. FIG. 20 shows a front view of the flow change section 160. The flow change section 160 has both ends adjacent to the support member 12 and the filter member 14. The shape, number, dimensions, and position of the through-holes in the support member 12 are not limited to those described above and can be appropriately set depending on the embodiment. The flow change section 160 has multiple through-holes 161 extending longitudinally along the circumferential direction on the outer periphery. A conical recess 162 is formed at the end of the flow change section 160 on the support member 12 side. The airflow from the packing material accumulation 10 flows from the inner periphery to the outer periphery toward the through-hole 161 located on the outer periphery of the recess 162. Furthermore, part of the airflow flows toward the deepest part of the deeply recessed recess 162, and some impurities adhere to the recess 162. This reduces the amount of impurities reaching the filter member 14. In FIG. 19, the recesses 162 are formed so that their cross-sectional area decreases from the packing accumulation 10 side toward the filter member 14 side. However, this is not limited to this, and any shape suitable for allowing some of the impurities to adhere to the recesses can be used as appropriate. For example, the recesses may have a square cross section or an arc-shaped cross section. Furthermore, the positions and number of recesses are not limited, and any positions and numbers can be used as appropriate. Furthermore, the shape, number, dimensions, and positions of the through holes 161 provided in the flow change section 160 are not limited to these, and can be set as appropriate depending on the embodiment.

[0075] (Configuration of flow change portion of 13th embodiment) FIG. 21 shows a cross-sectional view of a heated tobacco cartridge 1 having a flow change portion 170 of a thirteenth embodiment. FIG. 22 shows a cross-sectional view taken along line AA of FIG. 21. The flow change portion 170 is disposed between the packing material accumulation 10 and the filter member 14, and is formed by accumulating a large number of cylindrical members 171. Between adjacent cylindrical members 171 and between the cylindrical members 171 and the packaging member 16, gaps 174 are formed, serving as flow paths for airflow from the packing material accumulation 10. The cylindrical members 171 are formed to have a length in the longitudinal direction of the heated tobacco cartridge 1 of 70 mm or less. In this example, the cylindrical members 171 are formed to be, for example, 8.0 mm. Of course, the cylindrical members 171 may be formed to have other length dimensions. The outer diameter of the cylindrical members 171 is less than 3.5 mm. Setting the outer diameter to less than 3.5 mm allows a large number of cylindrical members 171 to be accumulated, and the gaps 174 can be dispersed from the center to the periphery.

[0076] 23, wall portion 172, which is the end face of cylindrical member 171 on the packing material accumulation 10 side, is adjacent to packing material accumulation 10 and prevents the airflow from packing material accumulation 10 from proceeding along the length direction. As a result, the airflow enters gap 174 while changing its radial vector component. In this way, flow change portion 170 allows more airflow to flow toward the outer periphery of filter member 14, so the radial vector component of the airflow can change from the inner periphery toward the outer periphery.

[0077] The cylindrical member 171 can be made of a resin material such as polypropylene or polylactic acid, or a metal material such as aluminum. As the airflow from the packing accumulation 10 flows toward the filter member 14, it comes into contact with the surface of the cylindrical member 171 and is gradually cooled. Furthermore, some of the impurities contained in the airflow adhere to the cylindrical member 171. This reduces the temperature of the airflow at the filter member 14 and reduces the impurities that reach the filter member 14.

[0078] (Configuration of flow change portion of 14th embodiment) FIG. 24 shows a cross-sectional view of a heated tobacco cartridge 1 having a flow change section 180 of the 14th embodiment. FIG. 25 shows a cross-sectional view taken along line AA in FIG. 24. The flow change section 180 is arranged in the same manner as the flow change section 170 of the 13th embodiment, and is formed by accumulating a large number of cylindrical members 181. The cylindrical members 181 have hollow sections 183, which serve as flow paths for the airflow. Furthermore, gaps 184 formed between adjacent cylindrical members 181 and between the cylindrical members 181 and the packaging member 16 also serve as flow paths for the airflow. In this example, the configuration is entirely the same as in the 13th embodiment, except that the cylindrical members 181 have hollow sections 183.

[0079] 26, in this example as well, the airflow is prevented from flowing in the longitudinal direction by wall portion 182, which is the end face of cylindrical member 181 on the packing accumulation 10 side, and the airflow changes its radial vector component as it enters gap portion 184 and hollow portion 183. In this way, more airflow can be directed toward the outer periphery of filter member 14 from flow change portion 180, so the radial vector component of the airflow can change from the inner periphery to the outer periphery.

[0080] The cylindrical member 181 can be made of a resin material such as polypropylene or polylactic acid, or a metal material such as aluminum. The airflow from the packing accumulation 10 flows while contacting the outer and inner peripheral surfaces of the cylindrical member 181, and is gradually cooled. In addition, some of the impurities contained in the airflow also adhere to the inner and outer peripheral surfaces of the cylindrical member 181. This reduces the temperature of the airflow in the filter member 14 and reduces the amount of impurities that reach the filter member 14.

[0081] Within the scope of the concept of the present invention, a person skilled in the art may conceive of various modifications and alterations, and it is understood that these modifications and alterations also fall within the scope of the present invention. For example, to the above-described embodiments, a person skilled in the art may appropriately add, delete, or modify components, or add, omit, or change conditions of processing, and these modifications are also included within the scope of the present invention as long as they include the gist of the present invention.

[0082] In each embodiment of the present invention, an example has been shown in which the heated tobacco cartridge 1 is provided with a support member 12, but the present invention is not limited to this. The filler accumulation body 10 of the heated tobacco cartridge 1 does not need to have a support member 12, as long as it is fixed between the inner circumferential surface of the heated tobacco cartridge 1 and the filler accumulation body 10 so as to prevent the filler accumulation body 10 from moving toward the filter member 14 even without the support member 12, for example.

[0083] Although the embodiment of the present invention has been described above, the application of the present invention is not limited to this embodiment, and the present invention can be applied in various ways within the scope of its technical concept. [Explanation of symbols]

[0084] 1. Heated tobacco cartridge 2. Heated smoking devices 10. Packing accumulation 12 Support member 12a Through hole 14 Filter member 14a Mouthpiece 16 Packaging materials 20 fillings 25 Packaging materials 30 Flow change section 32 Airflow guidance section 50 heating elements 51 Insertion section

Claims

1. a packing material accumulation that generates an aerosol when heated; a filter member having a mouthpiece for filtering the generated aerosol; a packaging material wound around the outer periphery of the packing material accumulation and the filter member, one or more flow change sections that change a radial vector component of the airflow containing the aerosol that flows from the packing accumulation toward the suction port side of the filter member, the flow change portion has an airflow guide portion on a surface in contact with the airflow, the airflow guide portion having an uneven portion in a side cross-sectional view in the length direction of the heated tobacco cartridge; the concave-convex portion is formed on a surface of the airflow guide portion facing the packaging member, A cartridge for heated tobacco.

2. The heated tobacco cartridge according to claim 1, wherein the flow change portion changes a radial vector component of the airflow containing the aerosol in a direction from the inner periphery toward the outer periphery.

3. the flow change portion is disposed between the filler accumulation body and the filter member in the longitudinal direction of the heated tobacco cartridge; 3. The heated tobacco cartridge according to claim 1, wherein the airflow guide portion is formed so that the cross-sectional area thereof increases from the packing body side toward the filter member side.

4. the flow change portion has a support portion that is adjacent to and supports the packing accumulation, The cartridge for heated tobacco according to claim 3, characterized in that the support portion has a through hole that communicates with the flow path of the air flow when the air flow guide portion is positioned between the filler accumulation body and the filter member.

5. the filter member has the flow change portion at an end portion on the packing accumulation side, A cartridge for heated tobacco as described in claim 1 or 2, characterized in that the flow change portion has an air flow guide portion formed so that the cross-sectional area increases from the filler accumulation side of the filter member toward the mouthpiece side.

6. a packing material accumulation that generates an aerosol when heated; a filter member having a mouthpiece for filtering the generated aerosol; a packaging material wound around the outer periphery of the packing material accumulation and the filter member, one or more flow change sections that change a radial vector component of the airflow containing the aerosol that flows from the packing accumulation toward the suction port side of the filter member, The filter member includes a first filter member on an inner circumferential side and a second filter member on an outer circumferential side, the first filter member and the second filter member having different absorption rates for the airflow, and the first filter member and the second filter member have different absorption rates for the airflow and are separated by a separation portion that does not allow the airflow to pass through. A cartridge for heated tobacco, characterized in that the first filter member forms the flow change portion by an air flow guide portion formed so that the cross-sectional area increases from the filler accumulation side toward the mouthpiece side.

7. a packing material accumulation that generates an aerosol when heated; a filter member having a mouthpiece for filtering the generated aerosol; a packaging material wound around the outer periphery of the packing material accumulation and the filter member, one or more flow change sections that change a radial vector component of the airflow containing the aerosol that flows from the packing accumulation toward the suction port side of the filter member, the flow change portion is disposed between the packing accumulation and the filter member, the flow change section has a first flow path member and a second flow path member adjacent to each other along the longitudinal direction, the first flow path member has a first through-hole that penetrates in the length direction and through which the airflow flows, the second flow path member has a second through hole that is disposed at a circumferential position different from the first through hole, penetrates in the length direction, and through which the airflow flows; a space portion is formed in a portion where the first flow path member and the second flow path member are adjacent to each other, the space portion communicating the first through hole and the second through hole and arranged to allow the airflow from the first through hole to flow toward an inner circumferential side; the space portion is formed to allow the airflow from the first through-hole that flows toward the inner circumferential side to flow into the second through-hole, A heated tobacco cartridge, characterized in that the second through hole is arranged so as to direct the airflow from the space portion toward the outer periphery.

8. The heated tobacco cartridge according to claim 7, wherein the second flow path member has a recessed portion on the filter member side of the space.

Images