Fragrance cartridge

Abstract

The present invention provides a fragrance cartridge that, regardless of its form, has suitable ventilation for smoking and is capable of generating sufficient aerosol. [Solution] An aromatic cartridge that is attached to an inhalation device having an electric heating means and generates an aerosol when heated by the electric heating means, comprising: a cylindrical cover; an aromatic base material housed in the cover and generating an aerosol containing aromatic components when heated; a lid material that closes the opening at the tip of the cover; a partition wall provided at the base end of the cover and separating the housing space inside the cover from the aromatic base material; and a filter housed at the base end of the cover, wherein the partition wall is formed in a disc shape as a whole and fixed to the cover, a gap is formed between the partition wall and the filter, the axial length of the gap in the cover is 20 to 30 mm, and the aromatic base material is in the form of granules.

Description

Technical Field

[0001] The present invention relates to an aroma cartridge that is attached to a suction device having an electric heating means and is capable of generating an aerosol containing an aroma component by being heated by the electric heating means.

Background Art

[0002] An aroma cartridge is attached to a suction device having an electric heating means and generates an aerosol containing an aroma component by being heated by the electric heating means.

[0003] As such an aroma cartridge and a suction device, a smoking device that is electrically heated by a set of electric heating elements and generates the flavor of tobacco or other components in the form of vapor or aerosol and sends it to a smoker is disclosed in Patent Document 1.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, the aroma cartridge can take various forms depending on the specifications of the suction device. For example, the aroma cartridge is often formed in a cylindrical shape. When used in a suction device in which the electric heating means is formed in a blade shape or a pin shape, the diameter of the aroma cartridge is set so that the electric heating means can be inserted into the aroma base material that generates the aerosol.

[0006] In contrast, when the electrically heated means is used in an inhalation device that is formed in a cylindrical shape or the like so that the outer surface of the fragrance cartridge can be heated, it is not necessary to insert the electrically heated means into the fragrance substrate, so it is possible to set the diameter to be smaller than that of a fragrance cartridge used in an inhalation device that is formed in a blade shape or the like.

[0007] Regardless of its form, users desire that the smoking sensation and smoking time of the fragrance cartridge remain consistent. Therefore, it is preferable that the amount of fragrance base material that generates aerosols filled into the fragrance cartridge be above a certain level, regardless of the form of the fragrance cartridge.

[0008] When the diameter of the fragrance cartridge is made smaller, the axial length of the fragrance material filled into the fragrance cartridge increases. In other words, when the diameter of the fragrance cartridge is made smaller, the diameter of the flow path for the aerosol within the fragrance cartridge becomes smaller, and the length of the fragrance material in the flow path, which can be a factor in airflow resistance, increases. As a result, the airflow resistance during smoking increases, and there is a problem in that a sufficient aerosol suitable for smoking cannot be obtained.

[0009] This invention has been made in view of the above problems, and aims to provide an aroma cartridge that has suitable ventilation for smoking and can generate a sufficient aerosol, regardless of the form of the aroma cartridge. [Means for solving the problem]

[0010] The present invention relates to an aromatic cartridge that is attached to an inhalation device having an electrically heating means and generates an aerosol when heated by the electrically heating means, comprising a cylindrical cover having an inner diameter of 6.3 to 6.8 mm, and an aromatic base material housed in the cover and generating an aerosol containing aromatic components when heated, wherein the aromatic base material is granular, has an average particle size in the fraction of 3.5 mesh pass to 10 mesh on, and is housed in the cover with a length of 25 to 40 mm in the axial direction.

[0011] Because the aromatic substrate is in granular form and its average particle size falls within the 3.5 mesh pass to 10 mesh on fraction, it is possible to ensure that the size of the voids formed between adjacent aromatic substrates is above a certain level. Therefore, the airflow resistance of the aerosol generated from the aromatic cartridge can be reduced. As a result, the multiple aromatic components contained in the aerosol are appropriately mixed, providing a well-balanced and pleasant flavor.

[0012] In the fragrance cartridge of the present invention, it is preferable that the proportion of the fragrance base material in the 3.5 mesh pass 10 mesh on is 85% by mass or more.

[0013] By ensuring that the proportion of 3.5 mesh pass 10 mesh on the fragrance substrate is 85% by mass or more, the size of the voids formed between adjacent fragrance substrates can be standardized. This suppresses variations in airflow resistance between fragrance cartridges.

[0014] In the fragrance cartridge of the present invention, the fragrance base material is preferably substantially spherical.

[0015] Because the aromatic substrate is approximately spherical, it can be easily manufactured using a granulator. Furthermore, it becomes possible to standardize the size of the voids formed between adjacent aromatic substrates.

[0016] In the fragrance cartridge of the present invention, it is preferable to have a lid material that closes the opening on the tip side of the cover, and a partition wall provided inside the cover on the base end side of the fragrance substrate and separating the storage space inside the cover.

[0017] Since a lid for closing the opening on the tip side of the cover is provided, it is possible to prevent the fragrance base material from flowing out of the cover. Further, since a partition wall is provided on the base end side of the cover rather than the fragrance base material, it is possible to prevent the fragrance base material from moving within the cover. Therefore, it becomes possible to hold the fragrance base material at an appropriate position within the cover. Thereby, it becomes possible to efficiently heat the fragrance base material.

[0018] In the fragrance cartridge of the present invention, it has a filter housed on the base end side of the cover, a gap is formed between the partition wall and the filter, and the axial length of the cover of the gap is preferably 20 to 30 mm.

[0019] Since the axial length of the cover of the gap is 20 to 30 mm, it becomes possible to enhance the air permeability in the axial direction of the cover of the aerosol generated from the fragrance base material.

[0020] In the fragrance cartridge of the present invention, the cover preferably has an axial length of 70 to 80 mm.

Effect of the Invention

[0021] According to the fragrance cartridge of the present invention, it becomes possible to reduce the ventilation resistance in the axial direction of the cover. Therefore, it becomes possible to improve the ease of sucking the aerosol generated from the fragrance base material. Further, since the aerosol and air can be mixed in an appropriate distribution, it becomes possible to improve the flavor.

Brief Description of the Drawings

[0022] [Figure 1] It is a perspective view of a fragrance cartridge according to an embodiment of the present invention. [Figure 2] It is a developed perspective view of the fragrance cartridge. [Figure 3] It is a cross-sectional view of the fragrance cartridge of FIG. 1. [Figure 4] It is a flowchart showing the manufacturing process of the fragrance base material of FIG. 1. [Figure 5] It is a flowchart showing the manufacturing process of the raw material (A2) in FIG. 5. [Figure 6] It is a flowchart showing another manufacturing process of the aromatic base material in FIG. 1. [Figure 7] It is a cross-sectional view of the aromatic cartridge according to Embodiment 2.

Mode for Carrying Out the Invention

[0023] [Embodiment 1] Hereinafter, with reference to the drawings, one embodiment of the aromatic cartridge according to the present invention will be described. FIG. 1 is a perspective view of the aromatic cartridge according to the present embodiment. FIG. 2 is an exploded perspective view of the aromatic cartridge. FIG. 3 is a cross-sectional view of the aromatic cartridge in FIG. 1.

[0024] [Configuration of Aromatic Cartridge 100] As shown in FIGS. 1 and 2, the aromatic cartridge 100 can be used, for example, for a cartridge of a heated tobacco. Hereinafter, an example in which the aromatic cartridge 100 is a cartridge used for a heated tobacco which is a suction device having an electric heating means will be described.

[0025] The aromatic cartridge 100 includes a cylindrical cover 10, an aromatic base material 20 housed on the tip side of the cover 10, a filter 30 housed on the base end side of the cover 10, a partition wall 40 disposed between the aromatic base material 20 and the filter 30, and a lid member 50 that closes the opening on the tip side of the cover 10. In the present embodiment, the lid member 50, the aromatic base material 20, the partition wall 40, and the filter 30 are arranged along the axial direction from the tip side to the base end side of the cover 10.

[0026] The inner diameter of the cover 10 is preferably 6.3 to 6.8 mm, and more preferably 6.5 to 6.7 mm.

[0027] The axial length of the cover 10 is preferably 70 to 80 mm, and more preferably 73 to 78 mm.

[0028] Because the inner diameter and axial length of the cover 10 are within the above range, it can also be suitably used in suction devices in which the electrical heating means is formed in a cylindrical shape or the like so that the outer surface of the fragrance cartridge can be heated.

[0029] The cover 10 consists of a wrapping paper 11 that covers the fragrance base material 20, and a chip paper 12 that further covers the outer periphery of the filter 30 from the outside of the wrapping paper 11. The wrapping paper 11 is joined to the chip paper 12 by means of adhesive or heat fusion.

[0030] The wrapping paper 11 and chip paper 12 can be made of, for example, paper, synthetic resin film, metal foil, etc., and may also be a composite sheet made by laminating these materials. Furthermore, adhesive or fused layers, such as an adhesive layer or a hot melt layer, may be formed on the inner surfaces of the wrapping paper 11 and chip paper 12.

[0031] In this embodiment, the wrapping paper 11 serves to form the fragrance base material 20 into a columnar shape. The wrapping paper 11 also serves to connect the fragrance base material 20, the partition wall 40, and the filter 30. The tip paper 12 serves to reinforce the part (mouthpiece) that the user holds in their mouth when holding the fragrance cartridge 100. The cover 10 is not limited to being composed of the wrapping paper 11 and the tip paper 12 separately, but may be composed of a single sheet in which the wrapping paper 11 and the tip paper 12 are integrated.

[0032] In this embodiment, as shown in Figures 2 and 3, the lid material 50, the fragrance base material 20, the partition wall 40, and the filter 30 are arranged along the axial direction from the front end to the base end of the cover 10.

[0033] The fragrance base material 20 may be an aggregate of granular components. The shape of the granular components is not particularly limited, but includes, for example, spherical, cylindrical, prismatic, ellipsoidal, fragmentary, and irregular shapes. When forming using a granulator, a substantially spherical granular component is preferred, and when forming using an extrusion molding device, a cylindrical granular component is preferred. In this embodiment, the components of the fragrance base material 20 are substantially spherical granular components. Because the fragrance base material 20 is made of granular components, gaps 21 are formed between adjacent granular components. The formation of gaps 21 inside the fragrance base material 20 in this way makes it possible to improve the axial air permeability of the fragrance cartridge 100.

[0034] The aromatic substrate 20 preferably has an average particle size of its constituent particles in the fractions of 3.5 mesh (mesh opening 5.6 mm) pass to 10 mesh (mesh opening 1.7 mm) on, more preferably in the fractions of 3.5 mesh (mesh opening 5.6 mm) pass to 8 mesh (mesh opening 2.36 mm) on, and more preferably in the fractions of 3.5 mesh (mesh opening 5.6 mm) pass to 6 mesh (mesh opening 3.35 mm) on. In this invention, the sieve size refers to the size of a standard sieve specified in JIS Z 8801 (ISO 3310). The average particle size of the granular material (constituent material) constituting the aromatic substrate 20 can be measured by sieving using a sieve specified in JIS Z 8801 and determining which mesh fraction the median diameter falls into. In this invention, the relationship between the sieve opening and mesh size used to determine the average particle size of the granular material (constituent material) is shown in Table 1 below.

[0035] [Table 1]

[0036] Since the constituent elements of the fragrance substrate 20 are granular and their average particle size is in the 3.5 mesh pass to 10 mesh on fraction, it is possible to maintain the proportion of voids (porosity) formed in the gaps between the granular elements constituting the fragrance substrate 20 within an appropriate range, thereby maintaining good air permeability.

[0037] Furthermore, the components of the aromatic substrate 20 preferably have a ratio of 50% by mass or more of 3-mesh pass 12-mesh on, more preferably 60% by mass or more, and more preferably 70% by mass or more.

[0038] By having a composition ratio of 3-mesh pass 12-mesh on 50% by mass or more of the components of the fragrance substrate 20, gaps between components can be uniformly formed, preventing uneven distribution of areas with high and low breathability, and suppressing the accumulation of small particles in the gaps that reduces breathability. This allows for the stable production of fragrance cartridges with appropriate breathability.

[0039] The fragrance substrate 20 is housed in the cover 10 with a length of 25 to 40 mm, preferably 28 to 38 mm, and more preferably 30 to 35 mm, in the axial direction. Having the fragrance substrate 20 within this length range allows the heat from the electrical heating means to be evenly distributed and efficiently transferred when attached to a suction device with an electrical heating means.

[0040] The fragrance cartridge 100 of the present invention is particularly suitable for use in suction devices in which the electrically heated means is formed in a cylindrical or other shape so as to be able to heat the outer surface of the fragrance cartridge.

[0041] The aromatic base material 20 can generate an aerosol containing aromatic components when heated by the electrical heating means of a heated tobacco device, which is an inhalation device. Preferably, the aromatic base material 20 contains not only tobacco plants, but also pulverized and dried plant material derived from non-tobacco plants, an aerosol former capable of generating aerosols, and a heat-meltable substance that melts when heated. The composition of the aromatic base material 20 will be described later.

[0042] The filter 30 preferably has a certain degree of permeability to the mainstream smoke or aerosol generated from the fragrance base material 20, and has the function of capturing solid particles contained in the mainstream smoke or aerosol and adsorbing harmful components. The shape of the filter 30 is not particularly limited and can be any shape that can be wrapped in the cover 10.

[0043] As the filter 30, for example, an acetate filter using acetate fibers, a charcoal filter containing activated carbon in an acetate filter, or an AFT (Advanced Filter Technology) (registered trademark) having multiple grooves formed as recesses extending from the outer surface of the filter 30 in the axial direction of the cover 10 can be used. In this embodiment, the filter 30 is fixed to the inner surface of the base material 12 of the cover 10 by fixing means such as adhesion or welding.

[0044] As shown in Figures 2 and 3, the partition wall 40 is positioned on the base end side of the fragrance substrate 20 in the axial direction of the cover 10. In this embodiment, the partition wall 40 is provided in contact with the base end side of the fragrance substrate 20. The partition wall 40 may have an outer surface shape corresponding to the shape of the inner surface of the cover 10. In this embodiment, the partition wall 40 is formed in a disc shape overall. The partition wall 40 is fixed to the cover 10 by fixing means such as adhesive or welding, and in this embodiment, it is fixed to the inner surface of the rolled paper 11.

[0045] The partition wall 40 is permeable in the axial direction of the cover 10. The permeability of the partition wall 40 should be sufficient to be suitable for smoking, for example, it should be at least as permeable as that of the filter 30.

[0046] The partition wall 40 is preferably made of a material that has heat resistance to the temperature range (for example, 180 to 400°C) heated by the electric heating means of the heated tobacco product. Examples of such heat-resistant materials include paper, resin, rubber, wood, metal, and ceramic.

[0047] The partition wall 40 has a structure that allows ventilation from the front end to the base end of the cover 10, and its shape is not limited as long as it has the function of restricting the movement of the fragrance substrate 20, which is located at the front end, toward the base end. Preferably, the partition wall 40 consists of at least one selected from, for example, a cotton-like material, a porous material, a honeycomb structure, a mesh structure, and the aforementioned paper material. Because the partition wall 40 closes the containment space inside the cover 10, it is possible to prevent the fragrance substrate 20 from moving toward the base end.

[0048] In this embodiment, the lid material 50 is formed in a disc shape overall. The lid material 50 is fixed to the tip of the cover 10 by means of fastening, such as adhesive or welding.

[0049] The lid material 50 is preferably made of a material that has heat resistance to the temperature range (for example, 180 to 400°C) heated by the electric heating means of the heated tobacco product. Examples of such heat-resistant materials include paper, resin, rubber, wood, metal, and ceramic.

[0050] The lid material 50 is permeable in the axial direction of the cover 10. The permeability of the lid material 50 should be sufficient to be suitable for smoking, for example, it should be at least as permeable as that of the filter 30.

[0051] The lid material 50 can be made of, for example, Japanese paper, a paper material such as a cotton-like material formed by the intertwining of multiple natural fibers in a mesh-like structure, a porous material, a honeycomb structure, a mesh structure, etc. Since the lid material 50 closes the opening at the front end of the cover 10, it is possible to prevent the fragrance base material 20 from leaking out of the opening of the cover 10.

[0052] Within the cover 10, a gap 60 is formed between the partition wall 40 and the filter 30. The gap 60 is preferably 20 to 30 mm in length in the axial direction of the cover 10, more preferably 22 to 28 mm, and more preferably 24 to 26 mm. That is, the ratio of the gap to the axial length of the cover 10 is preferably 1.0:2.4 to 1.0:3.7, more preferably 1.0:2.6 to 1.0:3.3, and more preferably 1.0:2.8 to 1.0:3.0.

[0053] By having a cover 10 with a gap of 60 and an axial length of 20-30 mm, it is possible to improve airflow while also providing a cooling effect to the aerosol cover generated from the aromatic substrate.

[0054] The axial length of the fragrance substrate 20 is preferably 31 to 50% of the total length of the fragrance cartridge 100, the axial length of the void 60 is preferably 35 to 48% of the total length of the fragrance cartridge 100, and the axial length of the filter 30 is preferably 38 to 44% of the total length of the fragrance cartridge 100.

[0055] [Composition of Aromatic Base Material 20] The aromatic base material 20 includes a pulverized and dried plant material that generates an aroma when heated, and an aerosol former that generates an aerosol when heated. Therefore, the aromatic base material 20 is capable of generating an aerosol containing aromatic components when heated. Preferably, the aromatic base material 20 contains at least one of the following: a heat-meltable substance that melts when heated, catechin, cross-linked polyvinylpyrrolidone and / or polyvinylpyrrolidone, and a fragrance.

[0056] The aromatic base material 20 may also contain, for example, an aromatic agent capable of supplementing the aroma emitted from the pulverized and dried plant material, a molding agent capable of improving the moldability of the aromatic base material 20, a binder that contributes to binding and integrating the aerosol former and the pulverized and dried plant material, an adsorbent capable of adhering the aromatic agent to the aromatic base material 20, and a preservative capable of improving the shelf life of the aromatic base material 20.

[0057] (Plant pulverized and dried materials) Examples of plant pulverized and dried materials include tobacco leaves and stems, as well as leaves, stems, flowers, seeds, fruits, bark, and roots of non-tobacco plants.

[0058] The crushed and dried plant products include, in particular, Chinese tea, black tea, roses, plants of the Oleaceae family (Osmanthus genus), lavender, saffron flowers, shallots, garlic, onions, konjac rhizomes, quince, plants of the Rutaceae family (citrus, bitter orange, Satsuma orange, summer bitter orange, ponkan, hassaku, iyokan, ichan lemon, trifoliate orange, orange, mandarin orange, kabosu, kishu orange, chinotto, grapefruit, koji, sanbokan, citron, jabara, sudachi, tachibana, tangor, summer orange, hanayuzu, hyuga tang, hirami lemon (shikuwasa), buntan (zabon), yuzu, lime, lemon, kaffir lime, etc.), plants of the Rosaceae family (Prunus genus), apples, pineapples, mangoes, and more. To provide users with a pleasant aroma, it is appropriate, but not limited to, to include at least one selected from the following: mandarin orange, melon, pomegranate, plum, apricot, blueberry, plants of the genus Fragaria in the Rosaceae family, raspberry, banana, and grape fruit, peppermint plants of the genus Mentha in the Lamiaceae family (peppermint, Japanese mint, apple mint, water mint, Corsican mint, pennyroyal mint, etc.), spearmint plants of the genus Mentha in the Lamiaceae family (spearmint, horsemint, green mint, crinkled mint, ginger mint, etc.), catnip, lemon balm, savory, willow mint (hyssop), and the above-ground stems and leaves of tobacco plants of the genus Tobacco in the Solanaceae family.

[0059] Preferably, the pulverized and dried plant material possesses three elements: fragrance, defined as the scent emanating from the fragrance cartridge 100 itself; aroma, defined as the scent that dissipates into the space when the fragrance cartridge 100 is heated; and flavor, defined as the scent that lingers in the mouth when the fragrance cartridge 100 is heated and inhaled together with the aerosol.

[0060] The pulverized and dried plant material that constitutes the fragrance (hereinafter also referred to as the fragrance material) preferably includes at least one selected from Chinese tea, black tea, rose, plants of the genus Osmanthus in the family Oleaceae, lavender, saffron flowers, and the above-ground stems and leaves of plants of the genus Nicotiana in the family Solanaceae.

[0061] The pulverized and dried plant material that constitutes the aroma (hereinafter also referred to as the aroma material) preferably includes at least one selected from the underground stems of shallots, garlic, onions, konjac, and the above-ground stems and leaves of tobacco plants of the Solanaceae family.

[0062] The crushed and dried plant materials that make up the flavor (hereinafter also referred to as flavoring material) include: quince, plants of the genus Citrus in the Rutaceae family (bitter orange, Satsuma mandarin, summer bitter orange, ponkan, hassaku, iyokan, ichan lemon, trifoliate orange, orange, mandarin orange, kabosu, kishu mandarin, chinotto, grapefruit, koji, sanbokan, citron, jabara, sudachi, tachibana, tangor, summer mandarin, hanayuzu, hyuga mandarin, hirami lemon (shikuwasa), buntan (zabon), yuzu, lime, lemon, kaffir lime, etc.), plants of the genus Prunus in the Rosaceae family, apple, pineapple, mango, kumquat, and more. It is preferable to include at least one selected from among the following: ron, pomegranate, plum, apricot, blueberry, plants of the genus Fragaria in the Rosaceae family, raspberry, banana, grape fruit, peppermint plants of the genus Mentha in the Lamiaceae family (peppermint, Japanese mint, apple mint, water mint, Corsican mint, pennyroyal mint, etc.), spearmint plants of the genus Mentha in the Lamiaceae family (spearmint, horsemint, green mint, crinkled mint, ginger mint, etc.), catnip, lemon balm, savory, willow mint (hyssop), and above-ground stems and leaves of tobacco plants of the genus Tobacco in the Solanaceae family.

[0063] (Aerosol Former) The aerosol former is added to generate an aerosol when the fragrance base material 20 is heated. Examples of aerosol formers that can be used 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, but glycerin and propylene glycol are particularly preferred.

[0064] (Thermally Meltable Substance) The thermally meltable substance is added to dissolve the aromatic components generated from the aromatic base material 20 at a relatively low temperature, vaporize them, and facilitate their release together with the aerosol former. In addition, the thermally meltable substance is used to dissolve the aromatic source material and / or fragrance at room temperature. It also serves to secure things in place.

[0065] The thermally fused material has a melting point in the range of 50 to 100°C, preferably in the range of 50 to 80°C, and more preferably in the range of 60 to 67°C. If the melting point of the thermally fused material is below 50°C, it may melt during periods of high temperatures, such as in summer, potentially causing stickiness. Furthermore, if the melting point of the thermally fused material exceeds 100°C, it may not melt sufficiently in the initial stages of the heating process of the fragrance base material, resulting in a tendency for insufficient fragrance in the aerosol immediately after the heating process by heated tobacco products is completed.

[0066] Furthermore, the melting point of a thermally molten substance can be measured, for example, in accordance with the method for measuring the melting point of paraffin wax specified in JIS K2235. That is, using a designated melting point tester, the molten sample is placed in a test tube, the reading of the melting point thermometer is read every 15 seconds, and the temperature at which the temperature drop is within a certain range (when the difference is within 0.1°C for 5 consecutive times) can be measured as the melting point.

[0067] The thermally fused material is preferably in powder form. The average particle size of the thermally fused material is preferably 125 to 355 μm, more preferably 150 to 300 μm, and even more preferably 180 to 250 μm. The average particle size can be measured, for example, by a laser diffraction particle size distribution analyzer. In this invention, the average particle size refers to the median diameter.

[0068] If the average particle size of the thermally molten material is too large, its total surface area decreases, reducing the opportunities for contact with the heat source. As a result, the thermally molten material is not sufficiently melted, and the concentration of aromatic components in the aerosol immediately after the heating process ends tends to decrease.

[0069] If the outer diameter of the thermally fused material is too small, it becomes difficult to form a sea-island structure in which the thermally fused material is dispersed on the aromatic substrate 20, as described later. As a result, each of the thermally fused material particles exists on the aromatic substrate 20 as aggregated lumps, creating regions where the melting rate due to contact with the heat source decreases, and the concentration of aromatic components in the aerosol immediately after the heating process ends tends to decrease. The thermally fused material is preferably contained in the aromatic substrate 20 at a concentration of 2 to 20% by mass, preferably 3 to 15% by mass, and more preferably 5 to 15% by mass.

[0070] The amounts of the fragrance source material, aerosol former, and thermally fused substance are preferably 55-75% by mass, 20-40% by mass, and 2-15% by mass, respectively, in order to balance the volatilization of the smoke component and fragrance component, and more preferably 60-70% by mass, 25-35% by mass, and 3-10% by mass.

[0071] The thermally fused substance is not particularly limited as long as it is "an organic compound that exhibits a melting point or softening point and becomes a non-Newtonian fluid when heated." The thermally fused substance is preferably an organic compound generally referred to as wax or wax, and typical examples of wax and wax include petroleum-based natural waxes, synthetic waxes, plant-based natural waxes, and animal-based natural waxes. Furthermore, various tackifiers, including rosin which is also used as wax and wax, can be used. These can be used individually or as a mixture containing at least one selected from among them.

[0072] As thermally meltable substances, plant-based natural waxes and animal-based natural waxes are preferred due to their desirable melting points and flavoring properties. Examples of plant-based natural waxes include sumac wax, lacquer wax, carnauba wax, sugarcane wax, palm wax, and candelilla wax. Examples of animal-based natural waxes include beeswax, whale wax, privet wax, wool wax, and shellac. These readily meet the melting point range of 50-100°C specified in this invention and possess desirable flavors, thus enhancing the aroma of the aerosol. Among these natural waxes, carnauba wax, beeswax, petrolatum, and paraffin wax are particularly preferred, with beeswax, which has a melting point of 62-65°C and is rich in aromatic components, being the most preferred.

[0073] Plant-based and animal-based natural waxes are primarily composed of esters of fatty acids and aliphatic alcohols. They are mixtures of esters of fatty acids with various carbon number configurations and aliphatic alcohols, and also contain free fatty acids, free aliphatic alcohols, and hydrocarbons. Therefore, plant-based and animal-based natural waxes are characterized by a broad molecular weight distribution, a wide melting temperature range, and high viscosity when melted.

[0074] Petroleum-based natural waxes have the advantage of having minimal interaction with aromatic components and aerosols, as they are hydrocarbon compounds, and are less likely to adversely affect flavor. Examples of petroleum-based natural waxes that can be preferably used include petrolatum, paraffin wax, and microcrystalline wax.

[0075] These petroleum-based natural waxes differ in their melting point temperature ranges based on their molecular structure. Vaseline is a mixture of branched and alicyclic hydrocarbons, and has a wide melting point temperature range of 36-60°C. Paraffin wax, on the other hand, is mainly composed of linear hydrocarbons, is highly crystalline, and most have a melting point of 40-70°C, resulting in a narrower melting point temperature range.

[0076] Microcrystalline waxes are mixtures of branched hydrocarbons and saturated cyclic hydrocarbons. They have low crystallinity but high molecular weight, exhibiting the highest melting point among these, at 60-90°C, and the second widest melting temperature range after petrolatum.

[0077] These petroleum-based natural waxes are all hydrocarbon compounds extracted from crude oil. Paraffin wax and microcrystalline wax have low melt viscosity and surface energy when melted by heat, and also have little interaction with aromatic components and aerosol formers.

[0078] Examples of such paraffin waxes include standard products from Nippon Seiro Co., Ltd., such as Paraffin Wax-115, 120, 125, 130, 135, 140, 145, 150, and 155, all of which are preferably used. Special paraffin waxes, such as the HNP series of high-purity refined paraffin waxes, the SP series for specific applications, and the EMW series, which are mainly composed of isoparaffin manufactured by a special process, are also preferably used. Microcrystalline waxes, such as any of the Hi-Mic series from Nippon Seiro Co., Ltd., are also preferably used.

[0079] As synthetic waxes, for example, Fischer-Tropsch wax, polyethylene (PE) wax, modified PE wax, polypropylene (PP) wax, modified PP wax, fatty acid amides, fatty acids, aliphatic alcohols, polyoxyalkylene glycols, polyoxyethylene alkyl ethers, polyoxyethylene alkylamines, and the like can be preferably used.

[0080] In particular, because Fischer-Tropsch wax is a linear hydrocarbon organic compound, it has low melt viscosity and surface energy during thermal melting, and also exhibits little interaction with aerosol formers and aromatic components. As for Fischer-Tropsch wax, medium melting point products such as C80 (melting point: approximately 85-88°C) can be used.

[0081] Furthermore, PE wax and modified PE wax, as well as PP wax and modified PP wax, are also hydrocarbon compounds and can be preferably used. Specifically, products such as "High Wax (registered trademark)" manufactured by Mitsui Chemicals, Inc., "Sun Wax" and "Viscol" manufactured by Sanyo Chemical Industries, Ltd., and "CERAFAK (registered trademark) 929, 950, 913, 914, 915" manufactured by BYK can be preferably used.

[0082] In particular, metallocene-catalyzed polyolefin waxes are more preferable due to their narrow molecular weight distribution. For example, "Excellex®," a metallocene-catalyzed PE wax manufactured by Mitsui Chemicals, Inc., has a narrow molecular weight and composition distribution, resulting in a melting point of 89-128°C, but a low melt viscosity during thermal melting, making it an excellent polyolefin-based wax.

[0083] In addition to the above, other thermally fused substances such as fatty acid amides, fatty acids, and aliphatic alcohols can also be used. Among fatty acid amides, monoamides and bisamides are suitable. Among monoamides, stearic acid monoamide, oleic acid monoamide, and erucic acid monoamide are preferred as they have melting points of approximately 72 to 105°C.

[0084] The fragrance cartridge 100 of the present invention may also contain other physiologically active substances such as catechin, caffeine, and theanine, as well as cooling agents such as menthol, flavorings such as coffee extract, and fragrances.

[0085] (Caffeine) Caffeine is the most distinctive component of coffee and is also found in many other foods such as tea, cocoa, and cola. The effects of caffeine are widely known, including its stimulating effect that wakes you up and its diuretic effect that promotes urine excretion. In addition, various other effects have been revealed, such as "enhancing the function of the autonomic nervous system," "improving concentration and work performance," and "improving athletic performance." By including caffeine, it is possible to refresh the mind of users who inhale the aerosol, wake them up, and provide them with antipyretic and analgesic effects.

[0086] Caffeine is preferably contained in 1 to 50 mg per aroma cartridge, more preferably in 5 to 30 mg, and even more preferably in 10 to 20 mg. Caffeine can also be added as an ingredient in the coffee extract used as a flavoring agent, as described later.

[0087] (Theanine) Theanine can be incorporated into the aromatic base material 20 using, for example, an extract obtained by extracting tea leaves with hot water, as well as green tea leaf powder, green tea leaf extract, green tea leaf fragrance, etc. By containing theanine, the aromatic base material 20 can suppress the activity of the sympathetic nervous system in users who inhale the aerosol, thereby promoting relaxation.

[0088] Theanine is preferably included in the aromatic base material 20 of one aromatic cartridge 100 at a rate of 10 to 100 mg, more preferably 20 to 80 mg, and more preferably 30 to 60 mg, in order for users with low anxiety tendencies to obtain a relaxing effect. For users with high anxiety tendencies to obtain a relaxing effect, theanine is preferably included at a rate of 20 to 120 mg, more preferably 30 to 100 mg, and more preferably 40 to 80 mg.

[0089] Furthermore, theanine may be present in the fragrance base 20 at a concentration of 3.3 to 33% by mass for users with low anxiety tendencies to obtain a relaxing effect, preferably at 6.6 to 26% by mass, and more preferably at 10 to 24% by mass. For users with high anxiety tendencies to obtain a relaxing effect, theanine may be present in the fragrance base 20 at a concentration of 6.6 to 10% by mass, preferably at 10 to 33.3% by mass, and more preferably at 13.3 to 26.6% by mass. When theanine is present in 100% by mass or more relative to the fragrance base 20, for example, theanine may be encapsulated in capsules and included in the fragrance cartridge 100.

[0090] (Cooling agent) Examples of cooling agents that can be used include menthol, menthol derivatives, menthone, menthone derivatives, menthane carboxylic acid amide, 2,3-dimethyl-2-(2-propyl)-butyric acid derivatives, menthane, menthane derivatives, L-carbone, xylitol, eucalyptus essential oil, peppermint oil, spearmint essential oil, spiranthol, etc.

[0091] (Components extracted from coffee) The components extracted from coffee preferably include coffee aroma components such as caffeine, pyridine, methylpyrazine, acetic acid, furfuryl alcohol, cyclotene, 1H-pyrrolecarboldehyde, hydroxypyridine, hydroxyacetone, furfural, methylfurfural, and maltol.

[0092] Examples of components extracted from coffee include coffee bean powder, coffee extract, coffee flavoring, and green coffee extract.

[0093] The components extracted from coffee should preferably be present in 0.3 to 60 mg of aromatic base material 20 in one aromatic cartridge 100, more preferably 1.5 to 30 mg, and even more preferably 3 to 15 mg. preferable.

[0094] The components extracted from coffee are preferably present in an amount of 0.1 to 20% by mass, more preferably 0.5 to 10% by mass, and more preferably 1 to 5% by mass, relative to the aromatic base material 20.

[0095] (Fragrance) Any type of fragrance can be used, including natural, synthetic, and blended fragrances. It can also be used as a flavoring (food additive) or a fragrance (cosmetic fragrance).

[0096] The types of fragrances in question include citrus, floral, fruit, milk, chypre, oriental, (connoisseur) food and beverage, (connoisseur) smoking accessories, vanilla, mint, sweetener, spice, nut, and alcoholic beverages.

[0097] In particular, fragrances that evoke a refreshing feeling, such as citrus, fruit, and mint; fragrances that evoke a relaxing feeling, such as those from food and beverages like chocolate, milk, and coffee; and fragrances that evoke a sweet feeling, such as vanilla, floral, and sweetener-based fragrances are preferred.

[0098] (Adsorbent) In the present invention, it is preferable to use an adsorbent to prevent cooling agents, fragrances, etc. from volatilizing before the temperature of the fragrance substrate 20 reaches the optimal temperature for the aerosol former and fragrance source material to volatilize. As described above, the adsorbent can cause fragrances such as cooling agents and fragrances to adhere to the heated fragrance generating material 20.

[0099] One preferred embodiment of the adsorbent is an adsorbent that causes the compound to adhere to the aroma-generating substrate 20 by adsorption. For example, if the compound is menthol, menthol has phenolic hydroxyl groups. Therefore, as the adsorbent, a hydrophilic crosslinked polymer capable of adsorbing phenolic hydroxyl groups can be used, such as crosslinked polyvinylpyrrolidone (PVPP) or polyvinylpyrrolidone (PVP).

[0100] Furthermore, for example, if the compound is nicotine, nicotine has a five-membered heterocyclic compound containing nitrogen. Therefore, as an sorbent, a cross-linked PVP that is thought to form an interaction with the nitrogen-containing five-membered heterocyclic compound can be used.

[0101] When cross-linked PVP and / or PVP is used as the adsorbent, the adsorbent is preferably contained in an amount of 4 to 25% by mass, and more preferably 5 to 20% by mass, based on 100% by mass of the total amount of the fragrance source material, aerosol former, and thermally fused substance.

[0102] Furthermore, as an adsorbent, an adsorbent that causes the compound to adhere to the aroma-generating substrate 20 by encapsulating it can be used, and cyclodextrin can be used as such an adsorbent.

[0103] Cyclodextrins are known to form inclusion compounds with chemical substances having hydroxyl and carboxyl groups of various sizes, and any of α, β, and γ-cyclodextrins can be used. In particular, β-cyclodextrin forms an inclusion compound with menthol and is ideal as an sorbent for menthol.

[0104] When cyclodextrin is used as the adsorbent, the adsorbent is preferably contained in an amount of 0.1 to 1.2% by mass, and more preferably in an amount of 0.2 to 1.0% by mass, based on 100% by mass of the total amount of the fragrance source material, aerosol former, and heat-melting substance.

[0105] Furthermore, the sorbent also plays a role in adsorbing and retaining physiologically active substances such as catechins, caffeine, and theanine. It is even more preferable that the sorbent contains both PVPP and cyclodextrin.

[0106] (Molding agent) A molding agent is used to reinforce the physical strength of the fragrance base material 20. Examples of molding agents include cellulose fibers and microcrystalline cellulose.

[0107] Preferably, cellulose fibers from sugarcane, bamboo, wheat, rice, esparto, jute, hemp, and wood are used. The fiber diameter of these cellulose fibers is preferably 5 to 25 μm, and the fiber length is preferably 0.25 to 6 mm. By using cellulose fibers with such a range of fiber diameter and fiber length, it is possible to enhance the binding effect of the components of the aromatic base material 20.

[0108] Furthermore, the microcrystalline cellulose preferably has an average particle size of 70 to 120 μm. If the average particle size of the microcrystalline cellulose is less than 70 μm, it tends to be difficult to suppress the shrinkage of the fragrance substrate 20 and to prevent adhesion between the fragrance substrate 20 and the molding machine. If the average particle size of the microcrystalline cellulose exceeds 120 μm, the fragrance substrate 20 tends to break easily. The average particle size of the microcrystalline cellulose can be measured using a laser diffraction particle size distribution analyzer. In this invention, the average particle size refers to the median diameter.

[0109] Furthermore, the mass-average molecular weight (Mw) of the microcrystalline cellulose is preferably between 20,000 and 60,000. If the mass-average molecular weight (Mw) of the microcrystalline cellulose is less than 20,000, the effect of suppressing the shrinkage of the fragrance base material 20 tends to be poor. If the mass-average molecular weight (Mw) of the microcrystalline cellulose exceeds 60,000, the fragrance base material 20 tends to break easily.

[0110] The molding agent is preferably contained in an amount of 2 to 25% by mass, and more preferably 3 to 20% by mass, based on 100% by mass of the total amount of the fragrance source material, aerosol former, and heat-melting substance. By incorporating the molding agent into the fragrance base material 20 in this manner, the above functions can be performed, and the molding agent can prevent it from hindering the generation of volatile substances from the fragrance source material and aerosol former.

[0111] (Binding agent) A binding agent is used to bind together raw materials such as fragrance source materials, aerosol formers, and heat-meltable substances that constitute the fragrance base material. Examples of binding agents include polysaccharide polymers, cellulose polymers, and calcium carbonate.

[0112] Examples of polysaccharide polymers that can be used include konjac mannan (glucomannan), guar gum, pectin, carrageenan, tamarind seed gum, acacia gum, soybean polysaccharides, locust bean gum, karaya gum, xanthan gum, and agar. From the viewpoint of strength and the above-mentioned moldability, glucomannan, guar gum, pectin, carrageenan, tamarind seed gum, locust bean gum, karaya gum, and xanthan gum are preferred as polysaccharide polymers, and the neutral polysaccharides glucomannan, guar gum, tamarind seed gum, and locust bean gum are more preferred.

[0113] Examples of cellulose-based polymers that can be used include carboxymethylcellulose (CMC), carboxyethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, sodium salt of CMC, potassium salt of CMC, calcium salt of CMC, sodium salt of carboxyethylcellulose, potassium salt of carboxyethylcellulose, and calcium salt of carboxyethylcellulose. From the viewpoint of the strength and moldability of the aromatic base material 20, sodium salt of CMC, potassium salt of CMC, sodium salt of carboxyethylcellulose, and potassium salt of carboxyethylcellulose are preferred.

[0114] It is preferable to use a combination of a polysaccharide polymer and a cellulose polymer as a binder. In this case, it is preferable to use glucomannan, guar gum, tamarind seed gum, or locust bean gum as the polysaccharide polymer. It is also preferable to use the sodium salt of CMC, the potassium salt of CMC, the sodium salt of carboxyethylcellulose, or the potassium salt of carboxyethylcellulose as the cellulose polymer. By using a combination of a polysaccharide polymer and a cellulose polymer in this way, the strength and moldability of the fragrance base material 20 can be improved.

[0115] The binder is preferably contained in an amount of 5 to 30% by mass, and more preferably 8 to 28% by mass, based on 100% by mass of the total amount of the fragrance source material, aerosol former, and thermally fused substance. By containing the binder in such amounts in the fragrance base material 20, the strength and moldability of the fragrance base material 20 can be improved, and adverse effects such as the generation of volatile substances from the fragrance source material and aerosol former can be avoided.

[0116] Furthermore, it is preferable that the fragrance base material 20 of the present invention contains both a binder and a molding agent. In this case, the mixing ratio of the binder and the molding agent is preferably 1:1 to 1:25 by mass ratio for optimal binding effect.

[0117] (Preservative) To preserve the heated fragrance generating cartridge for a long period of time, it is advisable to use a preservative. For example, potassium sorbate and / or sodium benzoate can be used as preservatives. Preferably, the preservative is contained in an amount of 0.005 to 0.04% by mass based on 100% by mass of the total amount of fragrance source material, aerosol former, and heat-melting substance.

[0118] Next, a method for manufacturing the fragrance base material 20 will be described. Figure 4 shows one embodiment of the manufacturing process for the fragrance base material 20. As shown in Figure 4, a mixing step is performed in which raw materials (A) including fragrance material, which is a pulverized and dried product of plants that constitute the fragrance, flavor material, which is a pulverized and dried product of plants that constitute the flavor, and raw materials (B) including aroma material, which is a pulverized and dried product of plants that constitute the aroma, are mixed. The mixing step is performed below the melting point of the thermally molten material. The mixing step can be performed, for example, using a known mixer.

[0119] Raw material (A) is obtained by mixing raw material (A1) containing fragrance material, which is a pulverized and dried product of plants that constitute the fragrance; raw material (A2) containing flavor material, which is a pulverized and dried product of plants that constitute the flavor; raw material (A3) containing an alcohol aqueous solution of microcrystalline cellulose, an alcohol aqueous solution of a binder, and an alcohol aqueous solution of an sorbent; and raw material (A4) containing an aerosol former, a fragrance agent, and a molding agent, and then allowing it to mature.

[0120] Furthermore, the mixing of raw materials (A1) to (A4) should be carried out below the melting point of the thermally molten material. This mixing process can be performed, for example, using a known mixer.

[0121] The raw material (A1) is obtained by sterilizing the fragrance material and then crushing it.

[0122] Raw material (A2) is obtained by sterilizing and then grinding a mixture of flavoring material and a thermally fused substance. Specifically, as shown in Figure 5, the flavoring material is sterilized and then ground to a predetermined size. Alternatively, the powdered thermally fused substance is heated and mixed at a temperature above its melting point, cooled, and then ground to a predetermined size. It is preferable to compress and shear the ground material and the powdered flavoring material, cool, and then grind to create raw material (A2).

[0123] The raw material (A3) is obtained by mixing an alcoholic aqueous solution of microcrystalline cellulose, an alcoholic aqueous solution of a binder, and an alcoholic aqueous solution of an sorbent (cross-linked polyvinylpyrrolidone and / or polyvinylpyrrolidone). The alcoholic aqueous solution is a mixture of pure water and ethanol.

[0124] The raw material (A4) is obtained by mixing an aerosol former, a fragrance, and a molding agent.

[0125] For maturation, it is preferable to carry out the process for 3 to 14 days under temperature conditions of, for example, 15 to 30°C. From the viewpoint of preserving aromatic components, it is more preferable to carry out the process for 4 to 7 days under temperature conditions of 20 ± 2°C. If the temperature exceeds 30°C or the maturation period exceeds 14 days, the likelihood of mold growth and spoilage tends to increase.

[0126] Raw material (B) is obtained by mixing raw material (B1), which contains aromatic materials that are pulverized and dried plant matter constituting the aroma, and raw material (B2), which contains a preservative. The mixing of raw materials (B1) and (B2) can be carried out, for example, using a known mixer.

[0127] Raw material (B1) is obtained by sterilizing and then grinding the aromatic material. Raw material (B2) is obtained by dissolving the preservative in pure water.

[0128] By performing a mixing step in which raw material (A) and raw material (B) are mixed in this manner, a sea-island structure is formed in which the powder of the heat-melted substance mixed with the fragrance source material is dispersed in the fragrance base material 20. It can be formed.

[0129] Furthermore, by performing the mixing, compression / shearing, and cutting processes below the melting point of the thermally fused material, it is possible to prevent the thermally fused material from spreading throughout the entire fragrance substrate 20 due to melting, and to maintain the sea-island structure of the thermally fused material in the fragrance substrate 20.

[0130] When a sea-island structure is formed in which powder of a heat-melted substance mixed with fragrance source material is dispersed on the fragrance substrate 20, the heat-melted substance will be dispersed on the fragrance substrate 20 in an island-like manner.

[0131] When the thermally molten substance is dispersed in island-like formations on the fragrance substrate 20, it flows more easily upon melting than when it is impregnated into the fragrance source material, and thus more easily incorporates fragrance components generated from the fragrance source material. Furthermore, when the flowing thermally molten substance comes into contact with the aerosol former, the fragrance components can be more easily volatilized together with the aerosol former as an aerosol.

[0132] As a result, the aromatic components of the fragrance source material can be efficiently volatilized. Therefore, when the user inhales the aerosol emitted from the fragrance cartridge 100 immediately after the heating process of the heated tobacco product is complete, they can more fully enjoy the fragrance.

[0133] Furthermore, the heat-melting substance may be added to raw material (B). Figure 6 shows another embodiment of the manufacturing process of the fragrance base material 20. As shown in Figure 6, when the heat-melting substance is added to raw material (B), it may be added to raw material (B1), for example.

[0134] The raw material mixture obtained in this way can be formed into granules using, for example, a granulator or an extruder to create granular aromatic substrate 20. As mentioned above, the average particle size of the granular particles constituting the aromatic substrate 20 is in the 3.5 mesh pass to 10 mesh on fraction, which allows the proportion of voids formed in the gaps between the granular particles constituting the aromatic substrate 20 (porosity) to be maintained within an appropriate range, thus ensuring good air permeability. Furthermore, since the proportion of granular particles in the 3.5 mesh pass to 10 mesh on fraction is 85% by mass or more, voids are uniformly formed within the aromatic substrate 20, preventing uneven air permeability and enabling the stable production of aromatic cartridges 100 with appropriate air permeability.

[0135] Furthermore, by generating the aromatic substrate 20 in a roughly spherical shape, it becomes possible to easily manufacture the aromatic substrate using a granulator. In addition, it becomes possible to standardize the size of the voids 21 formed between adjacent granular bodies.

[0136] As described above, the fragrance cartridge 100 of the present invention makes it possible to reduce the airflow resistance in the axial direction of the cover 10. Therefore, it is possible to improve the ease of inhaling the aerosol generated from the fragrance base material 20. In addition, since the aerosol and air can be mixed in an appropriate proportion, it is possible to improve the flavor.

[0137] [Embodiment 2] The fragrance cartridge 100 of Embodiment 2 differs from the fragrance cartridge 100 of Embodiment 1 in that it uses a restricting member that restricts the axial movement of the cover 10 of the fragrance base material 20. Components identical to those of the fragrance cartridge 100 of Embodiment 1 are denoted by the same reference numerals and their descriptions are omitted.

[0138] As shown in Figure 7, the regulating member 70 is provided in contact with the fragrance substrate 20 of the two fragrance substrates 20 that is located at the base end of the cover 10. In this embodiment, the regulating member 70 is formed in a substantially cylindrical shape and has one or more ventilation passages 71 that penetrate in the axial direction. Therefore, the regulating member is breathable in the axial direction of the cover 10.

[0139] In this embodiment, the ventilation passage 71 is defined by four concave grooves formed at equal intervals in the circumferential direction and along the axial direction on the outer surface of the restricting member 70, and by the inner surface of the cover 10.

[0140] Furthermore, the ventilation passage 71 may consist of, for example, one or more through holes formed to penetrate axially from one end face to the other end face of the regulating member 70. The ventilation passage 71 may consist of, for example, a central ventilation passage formed along the axis of the regulating member 70 and a plurality of ventilation passages 71 arranged circumferentially around the central ventilation passage and also formed to penetrate axially.

[0141] Furthermore, the restricting member 70 may be composed of a honeycomb structure or the like, having a hexagonal end face shape and multiple ventilation passages penetrating in the axial direction. In addition, the restricting member 70 may be composed of a porous body in which open cells are formed.

[0142] The restricting member 70 preferably has a shape that restricts the axial movement of the fragrance substrate 20 of the cover 10 when an electrically heated tobacco device is inserted, on one or both axial end faces of the cover 10, preferably the end face on the side facing the fragrance substrate 20. Here, a shape that restricts the axial movement of the fragrance substrate 20 of the cover 10 is, for example, a shape that restricts the movement of the material of the fragrance substrate 20 to a degree that does not cause practical problems.

[0143] Because the restricting member 70 is formed in this manner, the restricting member 70 restricts the movement of the fragrance substrate 70 toward the other end. In other words, the restricting member 70 can support the fragrance substrate 20.

[0144] Furthermore, the regulating member 70 can cool the high-temperature aerosol containing aromatic components generated from the aromatic base material 20 as it passes through. For this reason, the regulating member 70 is made of a material having heat resistance corresponding to the combustion temperature or heating temperature of the aromatic cartridge 100. For example, if the aromatic cartridge 100 is a cartridge for a heated tobacco product, the regulating member 60 may be made of a material having heat resistance of about 180 to 400°C.

[0145] Examples of such materials include paper, resin, rubber, wood, metal, and ceramics, but it is more preferable to use a resin that can be molded into various shapes.

[0146] The resin may be either a thermoplastic resin or a thermosetting resin. Examples include polyolefin resins, polyester resins, polystyrene resins, nylon resins, acrylic resins, silicone resins, fluororesins, polyurethane resins, ethylene-vinyl acetate (EVA) resins, phenolic resins, amino resins, ABS resins, and biodegradable plastics. Among these resins, since the fragrance cartridge 100 becomes waste after use, biodegradable plastics are preferred from the viewpoint of protecting the natural environment.

[0147] Examples of biodegradable plastics include poly(3-hydroxybutyrate) (PHB), poly(ε-caprolactone) (PCL), poly(butylene succinate) (PBS), and polylactic acid (PLA).

[0148] In this configuration, the fragrance substrate 20, which is positioned closest to the base end of the cover 10, can be held in a predetermined position within the cover 10 by the regulating member 70. As a result, when the fragrance cartridge 100 is attached to the heated tobacco product 50, the fragrance substrate 20 can be held in a position suitable for heating by the electric heating means 52. [Examples]

[0149] [Test Example 1] (Sensory evaluation such as air permeability: average particle size) Fragrance cartridges of Comparative Examples 1 and 2 and Examples 1 to 4 were prepared by changing the average particle size of the components of the fragrance base material 20.

[0150] (Preparation of samples: Comparative Examples 1, 2 and Examples 1-4) Fragrance cartridges 100 of Comparative Examples 1, 2 and Examples 1-4 were prepared using the formulations shown in Table 2. Specifically, the basic formulation consisted of fragrance source materials (aroma material, fragrance material, and flavor material), aerosol former, and thermally fused substance. The basic formulation consisted of 65% by mass of fragrance source material, 25% by mass of aerosol former, and 10% by mass of thermally fused substance.

[0151] A mixture of raw materials for a fragrance base was prepared by adding 15 parts by mass of fragrance agent, 23 parts by mass of binder, 21 parts by mass of adsorbent, 0.005 parts by mass of preservative and 20 parts by mass of pure water to 100 parts by mass of the basic formulation.

[0152] [Table 2]

[0153] The aromatic materials used were konjac powder as the aroma material (B1), black tea and osmanthus flowers as the fragrance materials (A1), and Gynostemma pentaphyllum as the flavor material (A3).

[0154] The aerosol former for raw material (A4) consisted of glycerin and propylene glycol. The heat-melting substance for raw material (A2) was beeswax. The fragrance for raw material (A4) consisted of peppermint oil and menthol. The binder for raw material (A3) consisted of CMC sodium salt and sugarcane fiber. The adsorbent for raw material (A3) consisted of cross-linked polyvinylpyrrolidone and β-cyclodextrin. The preservatives for raw material (B2) consisted of potassium sorbate and sodium benzoate.

[0155] Raw materials (A1) and (A2) were prepared in the manner shown in Figure 5. Specifically, raw material (A1) was obtained by sterilizing the fragrance material and then grinding it into a powder. Raw material (A2) was prepared by roughly mixing the flavor material (manufactured by YUNNAN HANSU BIOTECHNOLOGY CO.,LTD, Production code: PR001) and a thermally fused substance in a Henschel mixer, then compressing and shearing the mixture, cooling it to below 0°C, and then grinding it. Furthermore, raw materials (A1) and (A2) were selected using an 80-mesh sieve to an average particle size of approximately 250 μm.

[0156] Furthermore, a mixing process was performed in which raw materials (A) and (B) were mixed using a kneader in the manner shown in Figures 4 and 5 to prepare a raw material mixture for the fragrance base material 20.

[0157] This raw material mixture was formed into granules of a predetermined size using a granulator. Five types of granular aromatic base material 20 were prepared, each with a different average particle size, as described in Comparative Example 2 and Examples 1-4 below. The average particle size was measured by sieving using a sieve specified in JIS Z 8801, as described above, and determining which mesh fraction the median diameter fell into. For Comparative Example 1, granules of aromatic base material used in commercially available cigarette cartridges were used.

[0158] Comparative Example 1: Granules of a fragrance base material used in commercially available cigarette cartridges, with an average particle size of 24 mesh (mesh opening 0.71 mm) pass. Comparative Example 2: Granules adjusted so that the average particle size of the granules falls within the 12 mesh (mesh opening 1.4 mm) pass and 20 mesh (mesh opening 0.85 mm) ON fraction. Example 1: Granules adjusted so that the average particle size of the granules falls within the 8 mesh (mesh opening 2.36 mm) pass and 10 mesh (mesh opening 1.7 mm) ON fraction. Example 2: Granules adjusted so that the average particle size of the granules falls within the 6 mesh (mesh opening 3.35 mm) pass and 7 mesh (mesh opening 2.8 mm) ON fraction. Example 3: Granules adjusted so that the average particle size of the granules falls within the 4 mesh (mesh opening 4.75 mm) pass and 6 mesh (mesh opening 3.35 mm) ON fraction. Example 4: The granular material was adjusted so that its average particle size fell within the 3.5 mesh (5.6 mm mesh opening) pass 4 mesh (4.75 mm mesh opening) ON fraction. In Examples 1, 2, 3, and 4, the proportion of the 3 mesh pass 12 mesh ON fraction of the fragrance base material was 50% by mass or more.

[0159] The fragrance substrates obtained in this manner were wrapped in paper to achieve a predetermined filling density. Specifically, the fragrance substrates of Comparative Examples 1 and 2 and Examples 1 to 4 were formed to have a length of 34 mm.

[0160] In this embodiment, the axial length of the cover 10 was set to 73 mm, and its inner diameter to 6.7 mm. The length of the gap formed between the fragrance substrate 20 and the filter 30 was set to 24 mm.

[0161] (Sensory Test) Using heated tobacco products in which the electrically heating means is formed to surround the outer surface of the fragrance base material of the inserted fragrance cartridge in a cylindrical shape, 10 panelists evaluated the aerosol inhalation feel (overall evaluation including the amount of aerosol), aroma (taste), and inhalation resistance of the fragrance cartridges 100 of Comparative Examples 1 and 2 and Examples 1 to 4. The evaluations are shown in Table 3.

[0162] [Table 3]

[0163] As shown in Table 3, 8 out of 10 panelists agreed that the fragrance cartridges of Examples 1-4 had better draw comfort, fragrance (flavor), and draw resistance than the fragrance cartridges of Comparative Examples 1 and 2. He evaluated it as such.

[0164] Examples 1-4 have lower airflow resistance and higher airflow compared to Comparative Examples 1-2. In Comparative Examples 1 and 2, which have lower airflow than Examples 1-4, the flavor of menthol and other fragrances tended to be perceived as stronger (more intense). In contrast, in Examples 1-4, which have higher airflow than Comparative Examples 1-2, the flavor of menthol and other fragrances tended to be perceived as milder. This is thought to be because higher airflow allows the flavor of tea leaves and other fragrances to harmonize more easily. Regarding the aroma (taste) of Comparative Examples 1 and 2, many panelists felt that the aerosol temperature was higher and the flavor persistence was shorter than in Examples 1-4.

[0165] Furthermore, eight out of the ten panelists evaluated the fragrance cartridges of Examples 3 and 4 as having a better smoking experience than the fragrance cartridges of Examples 1 and 2.

[0166] Furthermore, many panelists evaluated the flavor of the fragrance cartridge in Example 3 as having a slightly stronger flavor than the fragrance cartridge in Example 4. However, as mentioned above, both flavors are excellent. Also, the difference in the evaluation of the flavor is slight, and different evaluations may be obtained depending on the combination of flavors, such as fragrances and cooling sensations.

[0167] [Test Example 2] (Sensory evaluation of air permeability, etc.: Axial length) Using the granular material of Example 4 in Test Example 1, the axial length of the fragrance base material 20 housed in the cover 10 was changed as shown in Table 4 below, and a fragrance cartridge was created in the same manner as in Test Example 1. As shown in Table 4, the axial length of the fragrance base material 20 was 10 mm for Comparative Example 3, 20 mm for Example 5, and 30 mm for Example 6.

[0168] In a heated tobacco device in which an electrical heating means is formed to surround the outer surface of the fragrance base material of the inserted fragrance cartridge in a cylindrical shape, the fragrance cartridge was inserted as described above, and 10 panelists evaluated the aerosol inhalation feel, aroma (taste), and inhalation resistance of the fragrance cartridges 100 of Comparative Example 3 and Examples 5 and 6, in the same manner as in Test Example 1. The evaluations are shown in Table 4.

[0169] [Table 4]

[0170] As shown in Table 4, eight of the ten panelists evaluated the fragrance cartridges of Examples 5 and 6 as having better draw comfort, aroma (flavor), and draw resistance than the fragrance cartridge of Comparative Example 3. However, many panelists felt that the draw comfort of Comparative Example 3 and the flavor persistence were shorter than those of Examples 5 and 6. Also, many panelists felt that the draw resistance of Comparative Example 3 was too low, resulting in a higher aerosol temperature than Examples 5 and 6, which they found unpleasant. [Explanation of Symbols]

[0171] 100 Fragrance cartridges, 10 covers, 20 fragrance base materials, 30 filters, 40 partitions, 50 lid materials

Claims

[Claim 1] A fragrance cartridge that is attached to a suction device having an electric heating means and generates an aerosol when heated by the electric heating means, comprising: a cylindrical cover; a fragrance base material housed in the cover and generating an aerosol containing fragrance components when heated; a lid material that closes the opening at the tip end of the cover; a partition wall provided within the cover on the base end side of the fragrance base material and separating the housing space within the cover; and a filter housed on the base end side of the cover, wherein the partition wall is formed in a disc shape as a whole and fixed to the cover; a gap is formed between the partition wall and the filter; the axial length of the gap in the cover is 20 to 30 mm; and the fragrance base material is granular.

Images