Smoking accessory cartridges

Abstract

To suppress uneven heating of an aerosol-forming substrate in a cartridge for a smoking tool to be used for a smoking tool of an induction heating type.SOLUTION: A cartridge 1 for a smoking tool includes a heated body (20) formed into a columnar shape, and a mouthpiece (30) which is arranged on one end side in an axial direction of the heated body, is fitted to a smoking tool (70) of an induction heating type, and is used. The heated body has: a central part (20a) which extends in the axial direction and is composed of a first aerosol-forming substrate (23a) that does not include a first susceptor (27a) or includes the first susceptor at first content rate; and an outer periphery part (20b) which is arranged so as to encircle the central part and is composed of a second aerosol-forming substrate (23b) containing a second susceptor (27b) at second content rate. The first content rate and the second content rate differ from each other.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a cartridge for a smoking device.

Background Art

[0002] In recent years, tobacco products that heat a tobacco cartridge containing tobacco components without using a flame and inhale the vaporized tobacco components are widely known. Also, due to the diversification of preferences, cartridges for enjoying the aroma and taste of plants that do not contain tobacco components in the same way as tobacco without using a flame have begun to be known. Such cartridges and the like are used by being attached to a heating-type smoking device.

[0003] As heating-type smoking devices, for example, blade heating-type and induction heating-type devices are known. As the configuration of a cartridge used in an induction heating-type smoking device, for example, Patent Document 1 is known. In the tobacco product described in Patent Document 1, a tobacco sheet (aerosol-forming base material) containing an aerosol-forming body and susceptor particles is wrapped with a wrapper in a state of being folded into a rod shape. When this tobacco product is attached to an induction heating-type smoking device and the switch is turned on, an alternating current flows through a coil built into the smoking device, generating an alternating magnetic field. As a result, an induced current flows through the susceptor particles, and the susceptor particles are inductively heated. Then heat is transferred from the susceptor particles to the aerosol-forming body, heating the aerosol-forming body and generating an aerosol.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] [[ID=,40]] In the tobacco product described in Patent Document 1, when the tobacco sheet is heated as described above, the heating temperature of the central region becomes higher than the heating temperature of the intermediate and peripheral regions that extend radially outward from the central region, resulting in uneven heating.

[0006] This invention has been made in view of the above circumstances, and its purpose is to suppress uneven heating of the aerosol-forming substrate in a smoking device cartridge used in induction heating type smoking devices. [Means for solving the problem]

[0007] To achieve the above objective, one aspect of the present invention provides a smoking device cartridge for use when attached to an induction heating type smoking device, comprising a cylindrical heated body and a mouthpiece disposed on one end of the heated body in the axial direction, wherein the heated body has a central part extending in the axial direction and made of a first aerosol-forming substrate containing the first susceptor at a first concentration, and an outer periphery disposed around the central part and made of a second aerosol-forming substrate containing the second susceptor at a second concentration, wherein the second concentration is greater than the first concentration, and the first aerosol-forming substrate and the second aerosol-forming substrate are , short Formed in a booklet shape, the first susceptor is ,line The second susceptor is made of a metal material formed in a shape or strip shape. ,line It is characterized by being made of a metal material formed in a rectangular or strip-like shape. [Effects of the Invention]

[0008] According to the present invention, uneven heating of the aerosol-forming substrate can be suppressed. Other problems, configurations, and effects will be clarified by the following description of embodiments. [Brief explanation of the drawing]

[0009] [Figure 1] A cross-sectional view of a cartridge for a smoking device according to this embodiment. [Figure 2]Cross-sectional view along line II-II in Figure 1. [Figure 3] A schematic diagram showing the first aerosol-forming substrate placed in the center of the heated object shown in Figure 2. [Figure 4] A schematic diagram showing the second aerosol-forming substrate arranged on the outer periphery of the object to be heated, as shown in Figure 2. [Figure 5] A schematic diagram showing part of the manufacturing process for cartridges used in smoking accessories. [Figure 6] A schematic diagram showing a smoking cartridge installed in an induction heating smoking device. [Modes for carrying out the invention]

[0010] Embodiments of the present invention will be described below with reference to the drawings.

[0011] Figure 1 is a cross-sectional view of a smoking device cartridge according to this embodiment, and Figure 2 is a cross-sectional view taken along line II-II in Figure 1.

[0012] As shown in Figures 1 and 2, the smoking device cartridge 1 according to this embodiment comprises a heated element 20, a mouthpiece 30, and an outer casing member 40. The heated element 20 is formed in a cylindrical shape and is arranged along the central axis C of the smoking device cartridge 1. The mouthpiece 30 is arranged alongside one end of the heated element 20 in the axial direction. The outer casing member 40 is a sheet-like member made of, for example, paper, and encloses and integrates the heated element 20 and the mouthpiece 30.

[0013] Here, the smoking device cartridge 1 shown in Figure 1 is formed to have, for example, a diameter of 6.5 to 7.5 mm and a length of 40 to 60 mm. Of course, the smoking device cartridge 1 may be formed to other dimensions.

[0014] The heating element 20 is formed by winding a plurality of aerosol-forming substrates 23, which are filling materials, with a sheet-like packaging member 25. The diameter of the heating element 20 is, for example, about 7 mm. Also, the thickness of the packaging member 25 is, for example, about 1.5 mm, and the inner diameter of the packaging member 25 (the diameter of the plurality of aerosol-forming substrates 23) is, for example, about 4 mm.

[0015] The heating element 20 has a columnar central portion 20a extending in its axial direction and a cylindrical outer peripheral portion 20b disposed so as to cover the periphery of the central portion 20a, and the packaging member 25 covers the periphery of the outer peripheral portion 20b. The central portion 20a is composed of a plurality of first aerosol-forming substrates 23a. The outer peripheral portion 20b is composed of a plurality of second aerosol-forming substrates 23b different from the plurality of first aerosol-forming substrates 23a. The diameter of the central portion 20a is approximately half of the inner diameter of the packaging member 25 (for example, 2 mm). The inner diameter of the outer peripheral portion 20b is approximately equal to the diameter of the central portion 20a, and the outer diameter of the outer peripheral portion 20b is approximately equal to the inner diameter of the packaging member 25.

[0016] One axial end portion of the heating element 20 is in contact with the mouthpiece 30. On the other hand, the other end portion of the heating element 20 opposite to the one end portion is not covered by a lid member (for example, paper), and the aerosol-forming substrate 23 is exposed. The packaging member 25 is made of, for example, paper, but the material is not limited as long as it is a sheet-like member.

[0017] The plurality of aerosol-forming substrates 23 (the first aerosol-forming substrates 23a and the second aerosol-forming substrates 23b) are composed of a number of members using tobacco plants or non-tobacco plants as raw materials. Each aerosol-forming substrate 23 is composed of strip-shaped members and is arranged in a bundle such that their longitudinal directions are along the central axis C. Also, the first aerosol-forming substrates 23a and the second aerosol-forming substrates 23b contain a susceptor made of a metallic material. The susceptor is inductively heated by the generation of an alternating magnetic field. Although details will be described later, the content rates of the susceptor are different between the first aerosol-forming substrates 23a and the second aerosol-forming substrates 23b.

[0018] The mouthpiece 30 constitutes the suction port of the smoking implement cartridge 1 and is formed using, for example, paper or the like. The mouthpiece 30 may also include a cellulose acetate filter or the like that removes fine particles. Part of the fine particles in the water vapor and aerosol generated by the heating element 20 is filtered by the filter of this mouthpiece 30.

[0019] Next, referring to FIGS. 3 and 4, the detailed configurations of the first aerosol-forming substrate 23a and the second aerosol-forming substrate 23b will be described. FIG. 3 is a schematic diagram showing the first aerosol-forming substrate 23a, and FIG. 4 is a schematic diagram showing the second aerosol-forming substrate 23b.

[0020] As shown in FIG. 3, the first aerosol-forming substrate 23a is formed in a strip shape and contains the first susceptor 27a and the non-tobacco material 28. The first susceptor 27a is made of a ferromagnetic metal material and has a granular shape. Ferromagnetic substances are roughly classified into ferromagnetic, paramagnetic, and diamagnetic substances. A ferromagnetic substance is a material that strongly magnetizes in the same direction as an external magnetic field when an external magnetic field is applied and retains a strong magnetism even when the external magnetic field is zero. Examples include iron, nickel, cobalt, and ferrite-based stainless steels. The relative permeability of a ferromagnetic substance is extremely larger than 1. For example, if it is iron, it is about 5000, if it is nickel, it is about 600, if it is cobalt, it is about 250, and if it is ferrite-based stainless steel, it is about 1000 to 1800.

[0021] On the other hand, paramagnetic materials are materials that, when an external magnetic field is applied, become weakly magnetized in the same direction as the external magnetic field, and become unmagnetized when the external magnetic field is removed. Examples include aluminum, platinum, and manganese. The relative permeability of paramagnetic materials is slightly greater than 1; for example, it is about 1.000021 for aluminum, about 1.000265 for platinum, and about 1.000830 for manganese. Diamagnetic materials are materials that, when an external magnetic field is applied, become weakly magnetized in the opposite direction to the external magnetic field, and become unmagnetized when the external magnetic field is removed. Examples include copper, graphite, and bismuth. The relative permeability of diamagnetic materials is slightly less than 1; for example, it is about 0.999990 for copper, about 0.99980 for graphite, and about 0.999834 for bismuth.

[0022] When an alternating magnetic field is generated, ferromagnetic metal materials not only generate Joule heating due to the inductive current that flows, but also generate heat (hysteresis loss) due to friction and vibration between molecules. Therefore, they can be easily induced to heat compared to paramagnetic or diamagnetic metal materials, and the aerosol-forming substrate 23 can be sufficiently heated.

[0023] Furthermore, ferromagnetic metal materials have high Curie temperatures, for example, nickel has a Curie temperature of around 358°C. Therefore, even when heating the smoking device cartridge 1 at a high temperature of, for example, 200°C, the heating temperature does not reach the Curie temperature, maintaining its ferromagnetic properties and allowing the aerosol-forming substrate 23 to be heated stably. Accordingly, in this embodiment, nickel, a ferromagnetic metal material, is used as the material for the first susceptor 27a, and nickel particles formed from granular nickel are used as the first susceptor 27a. In addition to nickel particles, iron particles, cobalt particles, ferritic stainless steel particles, or combinations of these metal particles may also be used. The first susceptor 27a may also be composed of the above-mentioned magnetic metal material, for example, an alloy containing 60% or more, preferably 80% or more, of the magnetic metal material may be used. Even in this case, the aerosol-forming substrate 23 can be sufficiently heated by induction heating of the ferromagnetic metal material. Note that a paramagnetic metal material or a diamagnetic metal material may be used instead of a ferromagnetic metal material. In this case, induction heating is still possible. However, it is preferable to use a ferromagnetic metal material from the viewpoint of shortening the heating time and reducing power consumption. The particle size of the first susceptor 27a is generally in the range of 200 μm to 500 μm. The non-tobacco material 28 is formed in a linear shape.

[0024] On the other hand, as shown in Figure 4, the second aerosol-forming substrate 23b is formed in a strip shape and contains the second susceptor 27b and the non-tobacco material 28. The second susceptor 27b is also made of the same metallic material (nickel particles) as the first susceptor 27a.

[0025] As shown in Figures 3 and 4, the first content of the first susceptor 27a contained in the first aerosol-forming substrate 23a is different from the second content of the second susceptor 27b contained in the second aerosol-forming substrate 23b. Specifically, the second content is greater than the first content, with the second content being 60-70% by mass and the first content being 30-40% by mass.

[0026] Furthermore, the shapes of the first susceptor 27a and the second susceptor 27b are not limited to granular shapes, but may be linear, for example.

[0027] Next, specific examples of tobacco plants or non-tobacco plants used as raw materials for the aerosol-forming substrate 23 (first aerosol-forming substrate 23a, second aerosol-forming substrate 23b) will be described. The first aerosol-forming substrate 23a and the second aerosol-forming substrate 23b are each composed of any one or more combinations of the raw materials shown below.

[0028] Tobacco plants include tobacco leaves, tobacco stems, expanded tobacco, and homogenized tobacco. Non-tobacco plants include plants other than tobacco plants. Preferred parts of non-tobacco plants include leaves, pulp, seeds, roots (scale roots, tubers, etc.), stems, tubers, bark (stem bark, tree bark, etc.), flowers (petals, stamens, pistils, etc.), trunks, and branches.

[0029] In this specification, "plants" refers to a group of organisms distinct from animals, and includes not only organisms with roots that live in a fixed location, such as grass and trees, but also algae such as microalgae and seaweed, fungi such as mushrooms, and so on.

[0030] The aerosol-forming substrate 23 is prepared, for example, by appropriately mixing dried and pulverized non-tobacco plants with an aerosol-generating aerosol former, microcrystalline cellulose, flavor enhancers, preservatives, binders, or thickeners, then pulverizing or classifying the mixture to form a powder or granules, or by forming it into a sheet and then cutting it into strips of a predetermined width and length.

[0031] For example, if the part of a non-tobacco plant is the leaf, tea can preferably be used. Teas differ not only in the type of plant used to make tea, but also in the processing method, even if they are from the same plant. Specifically, for example, Japanese tea, black tea, Angelica keiskei tea, hydrangea tea, Gynostemma pentaphyllum tea, aloe tea, ginkgo leaf tea, oolong tea, turmeric tea, Quercus glauca tea, Eleutherococcus senticosus tea, plantain tea, Glechoma hederacea tea, persimmon leaf tea, chamomile tea, Cassia obtusifolia tea, quince tea, chrysanthemum tea, Gymnema sylvestris tea, guava tea, goji berry tea, sedge leaf tea, black bean tea, Geranium thunbergii tea, brown rice tea, burdock tea, comfrey tea, Bibu tea, cherry blossom tea, Examples include saffron tea, shiitake mushroom tea, perilla tea, jasmine tea, ginger tea, horsetail tea, sweet pepper tea, gentian tea, buckwheat tea, Japanese angelica tree tea, dandelion tea, sweet tea, houttuynia cordata tea, Eucommia ulmoides tea, sword bean tea, elderberry tea, privet tea, Job's tears tea, senna tea, loquat leaf tea, pu-erh tea, safflower tea, pine needle tea, mate tea, barley tea, Japanese laurel tea, mugwort tea, eucalyptus tea, monk fruit tea, rooibos tea, and bitter melon tea. For these teas, the used tea leaves can also be used after brewing. Using used tea leaves allows for the effective reuse of expensive teas.

[0032] Furthermore, extracts and processed products of non-tobacco plants, as exemplified above, can also be used. Examples of extract forms include liquid, syrup, powder, granules, and solutions.

[0033] Examples of aerosol formers used as raw materials for the aerosol-forming substrate 23 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. Among these, glycerin and propylene glycol are preferred.

[0034] The microcrystalline cellulose used as a raw material for the aerosol-forming substrate 23 is obtained, for example, by partially depolymerizing α-cellulose obtained from fibrous plant pulp with acid, by removing the soluble portion from the cellulose and crystallizing the insoluble portion as appropriate. .

[0035] Microcrystalline cellulose can be used in powder form or dispersed in a solvent such as water to form a suspended solution. In this case, a high-speed stirrer or high-pressure homogenizer can be used to disperse it in the solvent.

[0036] Furthermore, flavor additives are preferably used as raw materials for the aerosol-forming substrate 23 as needed. Examples of flavor additives include mint, cocoa, coffee, black tea extract, and catechin powder from tea extract. Preservatives used in food are preferred, such as sorbic acid, potassium sorbate, benzoic acid, and sodium benzoate.

[0037] The aerosol-forming substrate 23 may contain menthol and a water-insoluble crosslinked polymer (preferably polyvinylpolypyrrolidone). By combining menthol with a water-insoluble crosslinked polymer, the sublimation of menthol can be effectively suppressed, and the flavor of menthol can 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. In addition, peppermint, mint oil, or other menthol-containing substances may be used.

[0038] The flavor additive is provided on the mouthpiece 30, for example, by impregnating the wall of the mouthpiece 30. The manner in which the flavor additive is provided on the mouthpiece 30 is not limited to this embodiment; for example, the flavor additive may be provided on the mouthpiece 30 by embedding a capsule containing the flavor additive in the wall of the mouthpiece 30. Alternatively, the flavor additive may be placed between the mouthpiece 30 and the heated body 20. When the flavor additive is enclosed in a capsule, the smoker can break the capsule by pressing it with their finger, and blow air at the desired time. This makes it possible to volatilize the aromatic components of flavor additives.

[0039] Furthermore, if the flavor additive is encapsulated in microcapsules, for example, the encapsulated microcapsules may be placed on the heated body 20.

[0040] Examples of binders or thickeners used as raw materials for the aerosol-forming substrate 23 include rubbers such as guar gum, xanthan gum, acacia gum, and locust bean gum; cellulose binders such as hydroxypropyl cellulose, carboxymethylcellulose, hydroxyethylcellulose, methylcellulose, and ethylcellulose; polysaccharides such as starch, organic acids such as alginic acid, sodium alginate, sodium carboxymethylcellulose, caranagin, agar, and pectin (conjugated base salts of organic acids); and combinations thereof.

[0041] (Method for manufacturing aerosol-forming substrate) The method for manufacturing the aerosol-forming substrate 23 described above will now be explained in detail for each step. The manufacturing process for the aerosol-forming substrate 23 includes a drying and grinding step in which tobacco plants or non-tobacco plants, which are the main raw materials, are dried and ground and weighed; a preparation step in which other raw materials are pre-treated and weighed; a mixing step in which the raw materials are mixed to form a composition; and a filling molding step in which the composition is molded.

[0042] In the drying and grinding process, the tobacco plant or non-tobacco plant parts (e.g., leaves, seeds, dried fruits, stems, bark, roots, etc.) that serve as the main raw material are processed into a predetermined pulverized material to form the composition. At this time, it is preferable to adjust the moisture content to a level that is suitable for absorbing or supporting the aerosol former, water, and other components to be added later. In drying, the temperature is preferably between 60°C and 80°C. This range makes it easier to reach the desired moisture content while avoiding the loss of necessary flavor components. Furthermore, the drying and grinding process may also include a sieving step to separate the pulverized material, allowing it to be adjusted to the desired particle size before being added to the mixing step.

[0043] In the preparation step, the raw materials necessary for producing the aerosol-forming substrate 23 can be prepared. For example, nickel particles with a particle size of 200 μm to 500 μm are prepared as the first susceptor 27a and the second susceptor 27b. The aforementioned microcrystalline cellulose is weighed in the preparation step and added to the mixing step.

[0044] In the mixing process, a conventional mixer can be used. For example, a configuration in which the raw materials in the mixing tank are mixed with shear force applied by stirring blades is preferably used. When manufacturing the base composition for the first aerosol-forming substrate 23a, the various raw materials are mixed with nickel particles containing, for example, 30 to 40% by mass. When manufacturing the base composition for the second aerosol-forming substrate 23b, the various raw materials are mixed with nickel particles containing, for example, 60 to 70% by mass.

[0045] In the filling molding process, a composition of various raw materials is formed into a thin sheet, and then cut to form strip-shaped aerosol-forming substrates 23. In this embodiment, a three-roll mill is prepared to make a thin sheet. Using a three-roll mill is preferable because it is possible to knead and disperse the material through compression by pressing it between the narrow rolls and shearing due to the difference in roll speeds, while simultaneously forming a sheet of the desired thickness with a doctor blade. Alternatively, it can be produced using a press roller or a press machine.

[0046] In the filling molding process, other means may be used, such as molding the composition by passing it through an orifice under pressure. In addition, in the filling molding process, non-tobacco plants, aerosol formers, binders or thickeners, flavor additives, preservatives, etc. may be added as needed, or water may be added.

[0047] The thickness of the sheet obtained in the filling molding process is preferably in the range of 0.1 mm to 1.0 mm, and 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 with a rotating blade, or the like.

[0048] In this case, when imparting tackiness to the surface of the strip-shaped aerosol-forming substrate 23, there are no particular limitations as long as the means for imparting tackiness are available, but it is sufficient to attach the aforementioned binder to at least a portion of it.

[0049] (Method of manufacturing the object to be heated) Next, a method for manufacturing the heated object 20 by wrapping the aerosol-forming substrate 23 produced by the above process with a packaging member 25 will be described with reference to Figure 5. Figure 5 is a diagram showing the manufacturing process of the heated object 20.

[0050] As shown in Figure 5, the packaging member 25 is placed on the opening / closing section 61 of the base 60, and a predetermined amount of the second aerosol-forming substrate 23b is placed on the packaging member 25. At this time, multiple second aerosol-forming substrates 23b are arranged in a flat manner. Next, a predetermined amount of the first aerosol-forming substrate 23a is placed on these second aerosol-forming substrates 23b. At this time, multiple first aerosol-forming substrates 23a are stacked near the center of multiple second aerosol-forming substrates 23b. The pair of opening / closing sections 61 provided on the base 60 are configured to be movable in directions away from each other.

[0051] Next, the pair of opening / closing parts 61 are moved in a direction that separates them from each other to form a recess (not shown) into which the packaging member 25 falls, and the aerosol-forming substrate 23 is wrapped in a cylindrical shape by the packaging member 25 that has fallen into the recess. At this time, a plurality of second aerosol-forming substrates 23b are arranged along the inner circumferential surface of the packaging member 25, and a plurality of first aerosol-forming substrates 23a are arranged inside these second aerosol-forming substrates 23b. Then, both ends of the packaging member 25 are bonded together to fill the inside of the packaging member 25 with the aerosol-forming substrate 23. In this way, the heated object 20 is completed.

[0052] (How to use smoking accessory cartridges) Next, the method of using the smoking device cartridge 1 will be explained with reference to Figure 6. Figure 6 is a cross-sectional view of the smoking device cartridge 1 inserted into the smoking device 70.

[0053] As shown in Figure 6, the smoking device cartridge 1 is used by being attached to an induction heating type smoking device 70. The smoking device 70 has an insertion part 71 for inserting the smoking device cartridge 1, a coil 72 built in so as to be wound cylindrically around the insertion part 71, and a circuit board (not shown) including a CPU that controls the flow of alternating current through the coil 72. When the smoking device cartridge is inserted into the insertion part 71, the heated object 20 is positioned inside the coil 72. In this state, when the switch of the smoking device 70 is turned on, alternating current flows through the coil 72 under the control of the CPU, and an alternating magnetic field is generated so as to penetrate the multiple aerosol-forming substrates 23 of the heated object 20. As a result, an induced current flows through the first susceptor 27a of the first aerosol-forming substrate 23a and the second susceptor 27b of the second aerosol-forming substrate 23b (see Figures 3 and 4), generating Joule heat and heat due to hysteresis loss, thus inductively heating the first susceptor 27a and the second susceptor 27b. Then, heat is transferred from these susceptors 27a and 27b to each aerosol-forming substrate 23, heating each aerosol-forming substrate 23 and generating aerosols. At this time, since the second content of the second susceptor 27b is greater than the first content of the first susceptor 27a, the heating temperature of the outer periphery 20b can be made approximately equal to the heating temperature of the center 20a. When a smoker puts the mouthpiece 30 in their mouth and inhales in this state, the aerosol flows into the mouthpiece 30 and into the smoker's mouth.

[0054] The smoking device cartridge 1 configured in this manner according to this embodiment can achieve the following effects.

[0055] The first aerosol-forming substrate 23a, located in the central part 20a of the heated object 20, contains the first susceptor 27a at a first concentration, and the second aerosol-forming substrate 23b, located in the outer peripheral part 20b, contains the second susceptor 27b at a second concentration different from the first concentration. Therefore, by appropriately adjusting the first and second concentrations, it is possible to reduce the difference in heating temperature between the central part 20a and the outer peripheral part 20b, thereby suppressing uneven heating of the aerosol-forming substrate 23. Furthermore, as in this embodiment, if the second concentration is greater than the first concentration, the heating temperature of the outer peripheral part 20b can be made approximately equal to the heating temperature of the central part 20a, thus enabling aerosol formation. Uneven heating of the substrate 23 can be reliably suppressed.

[0056] Furthermore, since the first susceptor 27a and the second susceptor 27b are formed in granular form, it is easier to evenly disperse these susceptors 27a and 27b on the aerosol-forming substrate 23 during the manufacturing stage, and heat can be uniformly transferred to each aerosol-forming substrate 23 when the smoking device cartridge 1 is heated. Moreover, if the first susceptor 27a and the second susceptor 27b are formed in a linear shape, these susceptors 27a and 27b can come into sufficient contact with the aerosol-forming substrate 23, and heat can be transferred efficiently.

[0057] Next, we will describe various modifications of cartridges for smoking accessories.

[0058] (Variation 1) The smoking device cartridge according to Modification 1 differs from the above embodiment in that the first susceptor 27a is made of a granular metal material (e.g., nickel particles) and the second susceptor 27b is made of a linear metal material (e.g., nickel wire). The linear second susceptor 27b is attached to the surface of the second aerosol-forming substrate 23b via an adhesive. The diameter of the second susceptor 27b is, for example, 0.9 mm and the length is, for example, 12 mm. In order to sufficiently heat the second aerosol-forming substrate 23b, it is preferable to attach a plurality (e.g., 4) of second susceptors 27b of such size to the surface of the second aerosol-forming substrate 23b. With a smoking device cartridge having such a configuration, the contact area between the second aerosol-forming substrate 23b and the second susceptor 27b can be sufficiently secured at the outer periphery 20b of the heated body 20, and the outer periphery 20b, which tends to have a lower heating temperature, can be heated as sufficiently as the central part 20a. Therefore, uneven heating of the aerosol-forming substrate 23 can be suppressed even more reliably. In addition, the linear second susceptor 27b is more easily inductively heated than the granular second susceptor 27b, so the second aerosol-forming substrate 23 can be heated effectively.

[0059] The shape of the second susceptor 27b is not limited to a linear shape; for example, it may be strip-shaped. In this case, the strip-shaped second susceptor 27b is attached to the surface of the second aerosol-forming substrate 23b via an adhesive. The thickness of the strip-shaped second susceptor 27b is, for example, 0.1 mm, and its length and width are approximately the same as those of the second aerosol-forming substrate 23. With a smoking device cartridge having such a configuration, the contact area between the second aerosol-forming substrate 23b and the second susceptor 27b can be further sufficiently secured at the outer periphery 20b of the heated object 20. Furthermore, since the strip-shaped second susceptor 27b is more easily inductively heated than the granular or linear second susceptor 27b, the second aerosol-forming substrate 23 can be heated more effectively.

[0060] (Modification 2) The smoking device cartridge according to Modification 2 differs from Modification 1 in that the first susceptor 27a and the second susceptor 27b are made of a linearly formed metal material (e.g., nickel wire). With a smoking device cartridge having such a configuration, by forming not only the second susceptor 27b but also the first susceptor 27a linearly, both the first aerosol-forming substrate 23a contained in the central part 20a of the heated object 20 and the second aerosol-forming substrate 23b contained in the outer peripheral part 20b can be heated uniformly. As with Modification 1, the shape of the second susceptor 27b is not limited to linear, and may be, for example, strip-shaped. In this case as well, the same applies. It can produce an effect.

[0061] (Variation 3) The smoking device cartridge according to Modification 3 differs from the above embodiment in that the first aerosol-forming substrate 23a and the second aerosol-forming substrate 23b each contain susceptors of different shapes. Specifically, the first susceptor 27a is formed in granular form and contained in the first aerosol-forming substrate 23a, and is also formed in a linear form and attached to the surface of the first aerosol-forming substrate 23a. Similarly, the second susceptor 27b is also formed in granular form and contained in the second aerosol-forming substrate 23b, and is also formed in a linear form and attached to the surface of the second aerosol-forming substrate 23b. With a smoking device cartridge having such a configuration, the linearly formed first susceptor 27a and second susceptor 27b can heat the surfaces of the first aerosol-forming substrate 23a and second aerosol-forming substrate 23b, and the granularly formed first susceptor 27a and second susceptor 27b can heat the interiors of the first aerosol-forming substrate 23a and second aerosol-forming substrate 23b. Therefore, the first aerosol-forming substrate 23a and second aerosol-forming substrate 23b can be heated evenly. In addition, similar to the first modification 1, the linear first susceptor 27a and second susceptor 27b may be formed in the shape of a strip, for example. Alternatively, one of the first susceptor 27a and second susceptor 27b may be formed in the shape of a strip, and the other in the shape of a strip. In this case as well, the same effects as described above can be achieved.

[0062] (Modification 4) The smoking device cartridge according to Modification 4 differs from the above embodiment in that the first susceptor 27a is not included in the first aerosol-forming substrate 23a. In other words, in this smoking device cartridge, the first content of the first susceptor 27a is 0% by mass. With a smoking device cartridge having such a configuration, a heating element, for example, a blade shape, can be inserted into the first aerosol-forming substrate 23a and heated. Therefore, the smoking device cartridge 1 can be used not only with induction heating type smoking devices 70 but also with blade heating type smoking devices. Thus, a smoking device cartridge that can accommodate the preferences of smokers can be provided.

[0063] (Variation 5) The smoking device cartridge according to Modification 5 differs from the above embodiment in that it includes a support member that supports the aerosol-forming substrate 23 between the heated body 20 and the mouthpiece 30. The support member has a channel for transferring the aerosol generated in the heated body 20 to the mouthpiece 30. The aerosol passing through the channel is cooled by the support member. With a smoking device cartridge having such a configuration, even when the first susceptor 27a and the second susceptor 27b are induction-heated at a high temperature by an induction-heating smoking device, the aerosol generated at the high temperature is sufficiently cooled by the support member, allowing the smoker to smoke comfortably.

[0064] It should be noted that the present invention is not limited to the embodiments described above, and various modifications are possible without departing from the spirit of the invention. All technical matters included in the technical concept described in the claims are subject to the present invention. The embodiments described above are preferred examples, but those skilled in the art can realize various alternatives, modifications, variations, or improvements from the contents disclosed herein, and these are included in the technical scope described in the appended claims.

[0065] In the above embodiment, no member was interposed between the central part 20a and the outer peripheral part 20b of the heated body 20, but a sheet-like member may be interposed to separate them. In this case, during the manufacturing stage, a plurality of first aerosol-forming substrates 23a can be wrapped in a cylindrical shape with a sheet-like member, and this cylindrical sheet-like member can be placed on a plurality of second aerosol-forming substrates 23b shown in Figure 5 and wrapped with a packaging member 25 to constitute the heated body 20. In this way, the first content of the first susceptor 27a and the second content of the second susceptor 27b can be accurately distinguished, and the heating temperature of the central part 20a and the outer peripheral part 20b of the heated body 20 can be easily adjusted.

[0066] Furthermore, in the above embodiment, the first aerosol-forming substrate 23a was configured to contain granular first susceptors 27a, but it is also possible to attach the first susceptors 27a to the surface of the first aerosol-forming substrate 23a via an adhesive. The same applies to the second aerosol-forming substrate 23b. In this case as well, the same effects as in the above embodiment can be achieved.

[0067] Furthermore, in the above embodiments and modifications 1 to 3, the first susceptor 27a and the second susceptor 27b were formed in granular, linear, or strip-like shapes, but are not limited to these shapes and may be formed in a rod shape, for example. In this case, for example, the rod-shaped first susceptor 27a can be embedded in a strip-shaped first aerosol-forming substrate 23a. This allows for a stable induction current to flow through the linearly extending first susceptor 27a, and enables stable induction heating of the first susceptor 27a.

[0068] Furthermore, although the aerosol-forming substrate 23 was formed in a strip shape in the above embodiment, it may be formed in various shapes, including, for example, a rod shape. In this case as well, the same effects as in the above embodiment can be achieved. [Explanation of Symbols]

[0069] 1. Smoking accessory cartridge 10 Exterior components 20 Heated object 20a center 20b Outer periphery 23a First aerosol-forming substrate 23b Second aerosol-forming substrate 25 Packaging materials 27a First susceptor 27b Second susceptor 30 mouthpieces

Claims

[Claim 1] A smoking device cartridge comprising a cylindrical heated body and a mouthpiece positioned at one end of the heated body in the axial direction, which is used when attached to an induction heating type smoking device, The object to be heated is A central part comprising a first aerosol-forming substrate that extends in the axial direction and contains a first susceptor at a first content, It has an outer peripheral portion which is made of a second aerosol-forming substrate that is arranged to cover the central portion and contains a second susceptor at a second content, The second content is greater than the first content. The first aerosol-forming substrate and the second aerosol-forming substrate are formed in a strip shape, The first susceptor is made of a metal material formed in a linear or strip-like shape. The second susceptor is made of a metal material formed in a linear or strip-like shape. The mouthpiece includes a cellulose acetate filter. A cartridge for smoking accessories characterized by the following features.

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