Flavour stick, non-combustion heat-type flavour suction product, and method for manufacturing flavour stick

Abstract

A flavor stick includes a flavor rod inserted into a heating chamber of a flavor suction device and heated from an outer peripheral side by an external heater arranged at a side peripheral portion of the heating chamber, and a mouthpiece portion connected to a rear end side of the flavor rod. The flavor rod has a plurality of thin winding rods each having an inner side winding paper and a flavor source and an aerosol generating base material arranged at an inner side of the inner side winding paper, and an outer side winding paper that winds and bundles the plurality of thin winding rods.

Description

Technical Field

[0001] This invention relates to fragrance sticks, non-combustion heated fragrance extraction products, and methods for manufacturing fragrance sticks. Background Technology

[0002] Conventionally, flavor sticks for non-combustible flavor absorbers are known, which are used to absorb flavor from a flavor source without combustion. As one example, a flavor stick is known to include a flavor rod formed by filling the inside of a roll of paper with a filler comprising a flavor source (e.g., tobacco material) and an aerosol-generating substrate (glycerin, propylene glycol, etc.), and a mouthpiece disposed at the rear section of the flavor rod (see, for example, Patent Document 1).

[0003] These scent sticks are used in conjunction with a scent inhalation device. Typically, the scent stick is inserted into the heating chamber of the scent inhalation device, where the device's heater heats the scent source without combustion. This non-combustion heating releases an aerosol containing scent components from the scent source, which is then inhaled by the user through the mouthpiece.

[0004] In addition, as a heating method for fragrance extraction devices, there is a known external heating method in which the fragrance source of the fragrance rod is heated from the outer periphery by a heater (external heater) disposed on the peripheral wall surface that defines the heating chamber.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: International Publication No. 2017-198838

[0008] Patent Document 2: Japanese Patent Application Publication No. 7-184625

[0009] Patent Document 3: Japanese Patent No. 5220762 Summary of the Invention

[0010] The technical problem that the invention aims to solve

[0011] Traditional fragrance sticks are made by simply wrapping the outer periphery of the fragrance source with a roll of paper. As a result, the filler inside the roll of paper is prone to falling off from the front end of the fragrance stick.

[0012] The present invention is proposed in view of the above-mentioned actual situation, and its purpose is to provide a technique for making it difficult for the fragrance source filled inside the roll of paper to fall off from the front end of the fragrance stick in a fragrance stick that is absorbed using a fragrance absorption device based on external heating.

[0013] Technical solutions for solving technical problems

[0014] The fragrance stick of the present invention, which solves the above-mentioned technical problems, comprises: a fragrance rod inserted into a heating chamber of a fragrance absorption device and heated from the outer periphery by an external heater disposed on the side periphery of the heating chamber; and a mouthpiece connected to the rear end of the fragrance rod; the fragrance stick has a plurality of thin coils and an outer winding paper for bundling and winding the plurality of thin coils, each of the plurality of thin coils having an inner winding paper and a fragrance source and an aerosol generating substrate disposed on the inner side of the inner winding paper.

[0015] Here, the inner winding paper in the plurality of thin winding rods can also be bonded to the outer winding paper.

[0016] Alternatively, a leakage suppression part connected to the rear end of the flavor rod can be provided at the front end of the mouthpiece portion. The leakage suppression part extends axially to provide an aerosol flow path for the aerosol generated in the plurality of thin rods to flow, and has a sealing part to block the rear end of the gap formed between the outer winding paper and the plurality of thin rods.

[0017] Additionally, the leakage suppression section may also include an outer peripheral sealing section, which is configured to face the outer peripheral gap section formed in the gap section near the outer peripheral side of the cross-section of the fragrance rod.

[0018] Additionally, the leakage suppression section may also include a central side sealing section, which is configured to face the central side gap section formed on the central side of the cross-section of the fragrance rod in the gap section.

[0019] In addition, the aerosol flow path can also be configured to face the rear end of the plurality of thin coils.

[0020] In addition, the rear ends of each of the plurality of thin coils can also be configured to span the closure and the aerosol flow path, and the area in the closure facing the rear ends of the thin coils can also function as an anti-deviation part of the thin coils when the fragrance rod is inserted into the heating chamber.

[0021] Furthermore, the present invention can be identified as a non-combustible fragrance inhalation product, which comprises: any one of the above-mentioned fragrance sticks; and a fragrance inhalation device for inhaling the fragrance stick, the fragrance inhalation device having a heating chamber for inserting the fragrance stick into the fragrance stick and an external heater disposed on the side periphery of the heating chamber.

[0022] Furthermore, the present invention can be defined as a method for manufacturing a fragrance rod, which is inserted into the heating chamber of a fragrance extraction device and heated from the outer periphery by an external heater disposed on the side periphery of the heating chamber. Specifically, the method for manufacturing the fragrance rod of the present invention includes: a long strip thin roll forming step, in which a fragrance source is continuously rolled in the long strip direction using a long strip of thin roll wrapping paper, thereby forming a plurality of long strip thin rolls side-by-side in the conveying direction of a rolling machine; a long fragrance rod forming step, in which the plurality of long strip thin rolls are brought together and integrally rolled using outer wrapping paper, thereby forming a long fragrance rod; and a cutting step, in which the long fragrance rod is cut into a predetermined length to form the fragrance rod.

[0023] It should be noted that the means used to solve the technical problems in this invention can be combined as much as possible.

[0024] The effects of the invention

[0025] According to the present invention, a technique is provided for making it difficult for the fragrance source filled inside the roll of paper to fall off from the front end of the fragrance stick in a fragrance stick that is absorbed using a fragrance absorption device based on external heating. Attached Figure Description

[0026] Figure 1 This is a schematic structural diagram of a fragrance extraction device for non-combustion heating of the fragrance stick of Embodiment 1.

[0027] Figure 2 This is a diagram that roughly illustrates the internal structure of the flavor stick in Embodiment 1.

[0028] Figure 3 yes Figure 2 A-direction view.

[0029] Figure 4 This is a perspective view of the leakage suppression part in Embodiment 1.

[0030] Figure 5 This is a diagram showing the manufacturing sequence of the fragrance stick in Embodiment 1.

[0031] Figure 6 This is a diagram illustrating the winding machine for manufacturing the fragrance stick according to Embodiment 1.

[0032] Figure 7 This is a diagram illustrating the process of manufacturing the fragrance stick according to Embodiment 1.

[0033] Figure 8 This is a diagram illustrating the process of manufacturing the fragrance stick according to Embodiment 1.

[0034] Figure 9 This is a diagram illustrating the process of manufacturing the fragrance stick according to Embodiment 1.

[0035] Figure 10 This is a diagram illustrating the process of forming the long fragrance stick in the second manufacturing method.

[0036] Figure 11 This is a diagram illustrating the shape of a cross-section orthogonal to the conveying direction of the conveyor.

[0037] Figure 12 This diagram illustrates the supply of leakage suppression components at the first to fourth positions, as well as the supply of various components by the fine winding rods and rollers.

[0038] Figure 13 This is a diagram illustrating the process of forming the long fragrance stick in the second manufacturing method.

[0039] Figure 14 This diagram shows the intermediate assembly formed during the process of forming the fragrance stick, as well as the separately prepared cooling section, filtering section, and splicing paper.

[0040] Figure 15 This is a diagram showing a flavoring stick manufactured using the second manufacturing method.

[0041] Figure 16 This is a diagram illustrating a modified example of the leakage suppression section.

[0042] Figure 17 This is a diagram showing the cross-section of the fragrance stick in Embodiment 2.

[0043] Figure 18 This is a cross-sectional view illustrating the leakage suppression section of Embodiment 2.

[0044] Figure 19 This is a diagram showing the cross-section of the fragrance stick in Embodiment 3.

[0045] Figure 20 This is a diagram showing the changes in the fragrance source in the thin roller of embodiment 3.

[0046] Figure 21 This is a diagram illustrating the general process of hardness measurement for thin coil rods. Detailed Implementation

[0047] Hereinafter, embodiments of the fragrance stick and non-combustible fragrance inhalation product of the present invention will be described based on the accompanying drawings. It should be noted that the dimensions, materials, shapes, and relative arrangements of the constituent elements described in this embodiment are not intended to limit the scope of the invention to these specific details unless otherwise specified.

[0048] <Implementation Method 1>

[0049] Figure 1 This is a schematic structural diagram of a fragrance extraction device 30 used for non-combustion heating of the fragrance stick of Embodiment 1. Figure 2 This is a diagram that schematically illustrates the internal structure of the fragrance stick 1 according to Embodiment 1. The fragrance extraction device 30 is an extraction device used when extracting the fragrance stick 1, and the fragrance stick 1 and the fragrance extraction device 30 constitute a non-combustible fragrance extraction product.

[0050] The fragrance extraction device 30 has a heating chamber 31 that can accommodate the fragrance rod 2 of the fragrance stick 1, and the fragrance rod 2 can be freely inserted and removed from its insertion port 31A. An electric external heater 32 for heating the fragrance rod 2 from the outer periphery is provided on the side wall 31B (side periphery) of the heating chamber 31 of the fragrance extraction device 30.

[0051] The fragrance stick 1 includes: a fragrance rod 2, which is inserted into the heating chamber 31 of the fragrance extraction device 30 and heated by the aforementioned external heater 32; and a mouthpiece 3, which is connected to the rear end of the fragrance rod 2. In this embodiment, the fragrance stick 1 has, for example, a cylindrical rod shape extending in a rod-like manner in one direction. Figure 1 In the attached diagram, CL is the central axis of the flavoring rod 1. It should be noted that since the flavoring rod 2 and the mouthpiece 3 are coaxially arranged, the central axis CL can also be referred to as the central axis of the flavoring rod 2 and the mouthpiece 3.

[0052] The cylindrical flavoring rod 2 and the mouthpiece 3 are coaxially arranged and integrally connected by coaxially winding with a tip paper 8. Reference numeral 1a indicates the inhalation end 1a formed on the rear end side of the flavoring rod 1, and reference numeral 1b indicates the front end of the flavoring rod 1. The flavoring rod 1 is inserted into the heating chamber 31 of the flavoring extraction device 30 from the front end 1b side.

[0053] The fragrance stick 2 has a plurality of thin coils 21 and an outer winding paper 22 that binds and winds the plurality of thin coils 21 together. Figure 3 yes Figure 2 View A is a front view of the fragrance stick 1 (fragrance rod 2) viewed from the front end 1b side. Each thin coil 21 constituting the fragrance rod 2 includes an inner winding paper 23 and a fragrance source and aerosol generating substrate disposed inside the inner winding paper 23. Figure 3 In the structural example shown, the fragrance stick 2 is illustrated with three thin coiled rods 21, but the number of thin coiled rods 21 is not particularly limited as long as it is two or more. Each thin coiled rod 21 has a central axis extending parallel to the central axis CL of the fragrance stick 1, and extends along the entire length of the fragrance stick 2. Furthermore, Figure 3 Reference numeral 24 in the attached figure refers to a flavor source containing an aerosol-generating substrate. Here, we will take the application of tobacco filler as an example of a flavor source.

[0054] When the fragrance inhalation device 30 inhales the fragrance stick 1, the external heater 32 is activated while the fragrance rod 2 is inserted into the heating chamber. As a result, in each thin coil 21, the fragrance source 24 (tobacco filling) containing an aerosol generating substrate is heated, releasing an aerosol containing fragrance components (e.g., tobacco components). Furthermore, the aerosol containing the fragrance components (e.g., tobacco components) generated by the fragrance rod 2 is delivered to the mouthpiece end 1a through the mouthpiece portion 3, whereby it is inhaled by the user.

[0055] The tobacco filling material used for flavor source 24 can be composed of shredded tobacco. The material of the shredded tobacco included in the tobacco filling material is not particularly limited; known materials such as tobacco leaf flakes and tobacco veins can be used. Alternatively, dried tobacco leaves can be pulverized to form tobacco pulverized material, homogenized, and processed into sheets (hereinafter also referred to as "homogenized sheets"), and then shredded. There are several conventional methods for manufacturing homogenized sheets, i.e., methods for processing pulverized tobacco leaves into homogenized sheets. The first method is the method of producing sheet-made sheets using a papermaking process (sheet-made method). The second method is the method of thinly casting sheets by mixing pulverized tobacco leaves with a suitable solvent such as water and homogenizing the mixture, then pouring the mixture thinly onto a metal sheet or metal strip and drying it (slurry method). The third method is the method of extruding a mixture of pulverized tobacco leaves with a suitable solvent such as water into a sheet shape, thereby producing rolled sheets (rolling method).

[0056] Alternatively, tobacco filler made by cutting the homogenized sheet into strips can also be used. Such tobacco strips have a length similar to the axial length of the thin rolling rod 21, and can be filled inside the inner winding paper 23 with their length oriented along the axial direction of the thin rolling rod 21. Of course, it is not necessary for all the tobacco strips contained in one thin rolling rod 21 to be neatly arranged along the axial direction of the thin rolling rod 21; a portion of the tobacco strips (e.g., more than 50% of the total) can be neatly arranged along the axial direction of the thin rolling rod 21. Alternatively, tobacco filler made by folding the homogenized sheet into a pleated shape can also be used.

[0057] A wide variety of tobacco types can be used for tobacco fillings. Examples include yellow varieties, burley varieties, oriental tobacco varieties, local varieties, other red-flowered tobacco varieties, yellow-flowered tobacco varieties, and mixtures thereof.

[0058] In addition, tobacco fillings may also contain flavorings. There are no particular limitations on the types of flavorings contained in tobacco fillings. Examples of flavorings include: acetyl anethole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, pentanol, amyl butyrate, trans-anetinoside, star anise oil, apple juice, Peru balsam oil, beeswax absolute, benzaldehyde, benzoin resin, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil, carob absolute, β-carotene, carrot juice, L-carvone, and β-carnation. Benzene, cinnamon bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, cinnamyl alcohol, cinnamyl cinnamate, citronellol, DL-citronellol, sage extract, cocoa, coffee, konjac oil, coriander oil, cuminaldehyde, artemisia oil, δ-decanoic acid, γ-decanoic acid, decanoic acid, dill herb oil, 3,4-dimethyl-1,2-cyclopentanedione, 4,5-dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 3,7-dimethyl-6-octenic acid, 2,3-Dimethylpyrazine, 2,5-Dimethylpyrazine, 2,6-Dimethylpyrazine, ethyl 2-methylbutyrate, ethyl acetate, ethyl butyrate, ethyl hexanoate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltitol, ethyl octanoate, ethyl oleate, ethyl palmitate, ethyl phenylacetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin, ethyl vanillin glycoside, 2-ethyl-3,(5 or 6)-dimethylpyrazine, 5-ethyl- 3-Hydroxy-4-methyl-2(5H)-furanone, 2-ethyl-3-methylpyrazine, eucalyptol, fenugreek oil, chickpea oil, gentian root extract, geraniol, geraniyl acetate, grape juice, guaiacol, guava extract, γ-heptanol, γ-caprolactone, hexanoic acid, cis-3-hexen-1-ol, hexyl acetate, hexanol, hexyl phenylacetate, honey, 4-hydroxy-3-pentenoic acid lactone, 4-hydroxy-4-(3-hydroxy-1-butenyl)-3,5,5-Trimethyl-2-cyclohexen-1-one, 4-(p-hydroxyphenyl)-2-butanone, sodium 4-hydroxyundecanoate, immortelle absolute oil, β-ionone, isoamyl acetate, isoamyl butyrate, isoamyl phenylacetate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute oil, kola syrup, rockrose oil, lemon terpene oil, licorice extract, linalool, linalyl acetate, angelica root oil, maltitol, maple syrup, menthol, menthone, L-menthol acetate, p-methoxybenzaldehyde, methyl-2-pyrrole Alkyl ketone, methyl anthranilate, methyl phenylacetate, methyl salicylate, 4'-methylacetophenone, methylcyclopentenone, 3-methylvaleric acid, mimosa absolute oil, molasses, myristic acid, nerol, nerolidol, γ-nonalactone, myristica oil, δ-octyl lactone, octanal, caprylic acid, neroli oil, orange oil, orris root oil, palmitic acid, ω-pentadecanolactone, peppermint oil, bitter orange leaf Paraguayan oil, phenethyl alcohol, phenylacetic acid, phenylacetic acid, piperaldehyde, plum extract, propenyl guaiacol, propyl acetate, 3-propylene Phenylphthalein, prune juice, pyruvic acid, raisin extract, rose oil, rum, sage oil, sandalwood oil, spearmint oil, styrax essential oil, calendula oil, tea distillate, α-terpineol, terpineyl acetate, 5,6,7,8-tetrahydroquinoxaline, 1,5,5,9-tetramethyl-13-oxehera (8.3.0.0(4.9))tridecane, 2,3,5,6-tetramethylpyrazine, thyme oil, tomato extract, 2-tridecone, triethyl citrate, 4-(2,6,6-trimethyl-1 2-(2,6,6-trimethyl-2-cyclohexenyl)2-buten-4-one, 2,6,6-trimethyl-2-cyclohexen-1,4-dione, 4-(2,6,6-trimethyl-1,3-cyclohexadienyl)2-buten-4-one, 2,3,5-trimethylpyrazine, γ-undecyl lactone, γ-valerol lactone, vanilla extract, vanillin, veratral, violet absolute, N-ethyl-p-menthane-3-carboxamide (WS-3), ethyl-2-(p-menthane-3-carboxamide)acetic acid (WS-5), with menthol being particularly preferred. Furthermore, these flavorings may be used alone or in combination of two or more. In addition, there are no particular limitations on the size of the tobacco shreds contained in the tobacco filling or the moisture content of the flavor source 24.

[0059] Furthermore, the aroma source 24 contained in each thin stem 21 may not contain tobacco material. Examples of such aroma sources 24 include plant materials that do not contain tobacco components. That is, each thin stem 21 may also contain one or more of the following: leaf mesophyll, leaf veins, stems, roots, flowers, seeds, and fruit pulp selected from plants that do not contain tobacco components. Herbal materials are preferably used as aroma sources as plant materials that do not contain tobacco components. Examples of medicinal herbs include allspice, black pepper, white sage root, calamus root, catnip, cattuba, cayenne pepper, birch polypore, sevicornu, cinnamon, ginseng, St. John's wort, green tea, black tea, black cohosh, cayenne pepper, chamomile, clove, cocoa, honey tea, echinacea, chrysanthemum, ginger, white buttercup, lavender, licorice, marjoram, thistle, peppermint (peppermint extract), oolong tea, oregano, peppermint, mint, red clover, ruyi tea (red or green), rosehip, rosemary, sage, clary sage, peppermint, spearmint, centella asiatica, thyme, turmeric, valerian, holly, wrinkled sorrel, Paraguayan holly, sandgrass, false purslane, ashwagandha, chili pepper, cranberry, milk thistle, etc.

[0060] Of course, the flavor source of the thin stalk 21 may also include a mixture of tobacco materials and herbal materials as described above.

[0061] The aerosol-generating substrate is a substance that generates aerosols when volatile substances released during the volatilization process are heated by the heater of the aroma extraction device 30 and then cooled. The aerosol-generating substrate can be, for example, a liquid. There are no particular limitations on the type of aerosol-generating substrate; extracts from various natural sources and / or their constituent components can be selected depending on the application. Examples of aerosol-generating substrates include glycerol, propylene glycol, glyceryl triacetate, 1,3-butanediol, and mixtures thereof.

[0062] exist Figure 3 In the example shown, the thin coil 21 has an elliptical cross-section, with its minor axis arranged radially along the fragrance rod 2. More specifically, the minor axes of each thin coil 21 extend radially about the central axis CL of the fragrance rod 2. Figure 3 The reference numeral BP in the attached figures indicates the adhesive portion where the outer surface 23A of the inner winding paper 23 of each thin winding rod 21 is bonded to the inner surface 22A of the outer winding paper 22. The outer surface 23A of the inner winding paper 23 is the side opposite to the surface (inner surface) of the winding fragrance source 24. It should be noted that the shape of each thin winding rod 21 can also be other than elliptical.

[0063] Next, the mouthpiece part 3 will be described. The mouthpiece part 3 has a leakage suppression part 4, a cooling part 5, and a filter part 6 from the front end side. The leakage suppression part 4, the cooling part 5, and the filter part 6 in the mouthpiece part 3 are arranged coaxially and neatly, and they are wound together by the winding paper 7. However, it is also possible to wind the flavor rod 2, the leakage suppression part 4, the cooling part 5, and the filter part 6 together by the attaching paper 8 without using the winding paper 7.

[0064] Figure 4 This is a perspective view of the leakage suppression section 4 according to Embodiment 1. The leakage suppression section 4 is located at the rear end of the fragrance rod 2 and is configured to abut against the rear end of the fragrance rod 2. Reference numeral CL2 indicates the central axis of the leakage suppression section 4. The leakage suppression section 4 is a perforated cylindrical body with multiple through holes formed along the central axis CL2 as aerosol flow paths 41A to 41C. The cross-section of the aerosol flow paths 41A to 41C is, for example, equal to the cross-sectional area of ​​each thin coil 21 in the fragrance rod 2, and the front end of the aerosol flow paths 41A to 41C is configured to connect with the rear end of each thin coil 21. That is, each thin coil 21 and each aerosol flow path 41A to 41C are connected and arranged along the central axis CL of the fragrance rod 1. As a result, the aerosol generated by each thin coil 21 of the fragrance rod 2 can flow in the aerosol flow paths 41A to 41C arranged in the rear section.

[0065] Here, sometimes a gap is formed along the central axis CL2 between the outer winding paper 22 of the fragrance rod 2 and the inner winding paper 23 of each thin winding rod 21. Figure 3 In the example shown, a central gap 25 is formed on the central side of the cross-section of the fragrance stick 2, which is surrounded by three thin coiled rods 21. Figure 3 In the example, the cross-section of the central side gap 25 is similar to that of a triangle. However, the shape and size of the central side gap 25 vary depending on the number, size, shape, and arrangement of the thin coils 21 included in the fragrance rod 2. In addition, the central side gap 25 may not be formed depending on the arrangement of the thin coils 21.

[0066] In addition, Figure 3 In the example shown, an outer peripheral gap 26 is formed near the outer periphery of the cross-section of the fragrance stick 2. The outer peripheral gap 26 is a gap formed in the cross-section of the fragrance stick 2, inside the outer winding paper 22 and close to the outer periphery of the outer winding paper 22. Figure 3In the example shown, the outer peripheral gap 26 is formed as a gap between adjacent thin coils 21 in the circumferential direction of the fragrance rod 2, at the location where the long axes of adjacent thin coils 21 in the circumferential direction of the fragrance rod 2 intersect each other. It should be noted that the shape and size of the outer peripheral gap 26 vary depending on the number, size, shape, and arrangement of the thin coils 21 included in the fragrance rod 2. In addition, depending on the arrangement of the thin coils 21, sometimes the outer peripheral gap 26 is not formed.

[0067] The aforementioned central side gap 25 and peripheral side gap 26 extend from the front end 1b of the fragrance rod 2 to the rear end along the central axis CL.

[0068] When the flavor stick 1 is drawn in, air is drawn into the flavor stick 2 from the front end 1b side and distributed into each thin coil 21. At this time, if the air drawn in from the front end 1b side of the flavor stick 2 flows through the central gap 25 and the outer peripheral gap 26, this air, as leaked air, does not flow through the flavor source 24 but flows into the mouthpiece 3. Therefore, in this embodiment, in order to reduce or suppress the leakage of air through the outer peripheral gap 26 of the flavor stick 2, a leakage suppression part 4 is disposed at the rear section of the flavor stick 2.

[0069] Figure 4 The reference numeral 42 shown in the figure is a sealing surface (sealing portion) formed at the front end of the leakage suppression part 4. The leakage suppression part 4 seals the rear ends of the central side gap 25 and the outer peripheral side gap 26 by arranging the sealing surface 42 (sealing portion) facing the central side gap 25 and the outer peripheral side gap 26 of the fragrance rod 2. Figure 4 In the illustrated structural example, the sealing surface 42 includes a central sealing portion 42A and an outer peripheral sealing portion 42B. The central sealing portion 42A, by being arranged facing the aforementioned central gap portion 25, seals the rear end of the central gap portion 25. Similarly, the outer peripheral sealing portion 42B, by being arranged facing the aforementioned outer peripheral gap portion 26, seals the outer peripheral gap portion 26. As a result, when the fragrance stick 1 is aspirated, leakage of air drawn into the fragrance stick 2 from the front end 1b side through the central gap portion 25 and the outer peripheral gap portion 26 downstream can be suppressed. Therefore, when the fragrance stick 1 is aspirated, the air drawn in from the front end 1b side can be efficiently distributed to the fragrance source 24 of each fine coil 21 for generating aerosol. Furthermore, the leakage suppression portion 4 also functions as a spacer for separating the cooling portion 5 from the fragrance stick 2.

[0070] It should be noted that the leakage suppression part 4 can be formed of various materials. For example, the leakage suppression part 4 can also be a hollow cellulose acetate tube. In other words, the leakage suppression part 4 can also be a structure in which a central hole is formed through the cross-section of a cylindrical cellulose acetate fiber bundle. However, the material of the leakage suppression part 4 is not particularly limited. The material constituting the leakage suppression part 4 does not need to be completely airtight, as long as the air resistance of the closed surface 42 of the leakage suppression part 4 when the internal heater 32 is inserted into the heater insertion hole 25 is higher than the air resistance of the fragrance source 24 of each thin coil 21. Since air flows through the part with relatively low air resistance, the leakage suppression part 4 functions effectively by adopting the above-described configuration.

[0071] The cooling section 5 is located directly behind the leakage suppression section 4 and is disposed in contact with the rear end of the leakage suppression section 4. During the absorption of the fragrance stick 1, volatile substances released from the fragrance rod 2 (fragrance source 24) flow downstream along the cooling section 5. The volatile substances released from the fragrance rod 2 (fragrance source 24) are cooled by the cooling section 5, thereby promoting the formation of aerosols. Figure 2 In the illustrated configuration, the cooling section 5 is formed from a hollow paper tube having vent holes 5A that allow external air to enter. However, the cooling section 5 may also lack vent holes 5A. Additionally, a cooling-promoting material such as polylactic acid sheets may be disposed inside the paper tube forming the cooling section 5 to promote the cooling of volatile substances emitted from the flavor source 24. Furthermore, the cooling section 5 may also contain an endothermic agent disposed in a manner that does not impede the flow of volatile substances or aerosols. For example, the cooling section 5 may also include a filter material with multiple flow paths (through holes) formed along the length (axial direction) of the mouthpiece portion 3.

[0072] The filter section 6 is a segment located at the rear end of the mouthpiece section 3, i.e., on the inlet end 1a side. The filter section 6 may also be located directly behind the cooling section 5, configured to abut against the rear end of the cooling section 5. Figure 2 In the illustrated configuration, the filter section 6 may, for example, include a filter material that captures a predetermined component contained in aerosols. The type of filter material forming the filter section 6 is not particularly limited. For example, the filter section 6 may also include a filter material formed from cylindrical cellulose acetate fibers. Alternatively, the filter section 6 may be a center-hole filter with a central hole formed along the axial direction of the cylindrical cellulose acetate fibers. Furthermore, the filter section 6 may be a paper filter filled with cellulose fibers, or it may be a paper tube without filter material. Additionally, the filter section 6 may be formed by selectively combining a solid filter material with filter material, a center-hole filter, a paper filter, or a paper tube without filter material.

[0073] Next, the manufacturing method of the fragrance stick 1 according to this embodiment will be described. The manufacturing method of the fragrance stick 1 includes: a step of bundling multiple thin coils containing a fragrance source comprising an aerosol generating substrate by winding them with inner winding paper and then integrally winding them with outer winding paper to form a fragrance stick; and a connecting step of arranging a mouthpiece portion in series with the fragrance stick and integrally winding them with a splicing paper. Here, refer to Figures 5-9 The process of forming the above-mentioned fragrance rod includes the following steps: a long strip thin roll forming process in which a fragrance source containing an aerosol generating substrate is continuously wound in the long strip direction by a long strip thin roll of winding paper, thereby forming multiple long strip thin rolls side by side in the conveying direction of the rolling machine; a long strip fragrance rod forming process in which multiple long strip thin rolls are brought together and wound together integrally by the outer winding paper of the long strip, thereby forming a long strip fragrance rod; and a cutting process in which the long strip fragrance rod is cut into a specified length to form a fragrance rod.

[0074] Figure 5 This is a diagram showing the manufacturing sequence of the fragrance stick 1 in Embodiment 1. Figure 6 This is a diagram illustrating a part of the winding machine used to manufacture the fragrance stick 2 according to Embodiment 1. Figures 7-9 This diagram illustrates the process of manufacturing the fragrance stick 2 according to Embodiment 1. Hereinafter, the manufacturing process will be described as follows... Figure 3 The following description uses the case of a fragrance rod 2 with three thin coils 21 as an example. The fragrance rod 2 can be manufactured, for example, using a coiling machine disclosed in Japanese Patent Application Publication No. 7-184625.

[0075] First, in the thin roll forming section 101 of the rolling machine, the fragrance source 24 is continuously rolled into a cylindrical shape along its length using a long strip of thin roll wrapping paper 23P, forming long thin roll bars 21P1 to 21P3 with a cylindrical cross-section (long thin roll bar forming process). The long thin roll bars 21P1 to 21P3 each have a long strip shape and are finally cut to a specified length to become each thin roll bar 21.

[0076] Figure 7 This refers to the long thin coils 21P1 to 21P3 formed in the thin coil forming section 101. The thin coil forming section 101 includes three parallel winding production lines L1 to L3 that respectively wind up the long thin coils 21P1 to 21P3 in parallel. The long thin coils 21P1 to 21P3 are wound up in a parallel and side-by-side state on the production line.

[0077] The winding forming section 101 has a fragrance source supply section 101A and a forming section 101B located downstream of each winding production line L1 to L3. The fragrance source supply section 101A of each winding production line L1 to L3 continuously supplies fragrance source 24 to the long strip of inner winding paper 23P conveyed along the conveying path. The type of fragrance source 24 supplied from the fragrance source supply section 101A to the long strip of inner winding paper 23P can be different for each winding production line L1 to L3, or it can be the same. In the forming section 101B of each winding production line L1 to L3, the long strip of inner winding paper 23P, after the fragrance source 24 has been supplied, is gradually contracted from the outer surface side, and thus rolled into a cylindrical shape.

[0078] The forming section 101B, for example, shapes the elongated inner winding paper 23P into a cylindrical shape and winds the fragrance source 24 around it via the inner side of a guide member having an inner wall surface of a cylindrical guide member. Such a guide member is known, and for example, a clamp (Japanese: トング) disclosed in Japanese Patent Application Publication No. 7-184625 can be used. For example, the inner wall surface of the cylindrical guide member gradually narrows towards the downstream side of the transport path, and the elongated inner winding paper 23P is guided by the inner wall surface of the cylindrical guide member as it passes through the inner side of the guide member. As a result, the cross-sectional shape of the elongated inner winding paper 23P is formed into a cylindrical shape via a U-shape. It should be noted that during the process of forming the elongated inner winding paper 23P into a cylindrical shape, the fragrance source 24 disposed on the inner side of the elongated inner winding paper 23P is appropriately compressed by the inner wall surface of the cylindrical guide member. As described above, the inner strip of winding paper 23P is formed into a cylindrical shape, and the ends of the inner strip of winding paper 23P in the width direction are bonded to each other in an overlapping manner. The result is, as... Figure 7 As shown, long, cylindrical thin coiled rods 21P1 to 21P3 are obtained.

[0079] Next, in the coarse winding forming section 102 of the winding machine, multiple long thin coils 21P1 to 21P3 conveyed on the conveying path are brought together and wound together by the outer winding paper 22P of the long coils, thereby forming a long fragrance bar 2P with a cylindrical cross-section (long fragrance bar forming process).

[0080] Figure 8 This indicates that in the coarse roll forming section 102, multiple long thin rolls 21P1 to 21P3 are placed in a bag-like manner on the outer side of the long strip of paper 22P being conveyed along the conveying path. In the coarse roll forming section 102, as... Figure 8 As shown, with multiple long, thin coils 21P1 to 21P3 neatly arranged on the outer winding paper 22P, the outer winding paper 22P is shaped into a cylindrical form, and then bonded together with the ends of the outer winding paper 22P overlapping each other in the width direction. The result is as follows: Figure 9 As shown, a long fragrance rod 2P with a cylindrical cross-section is obtained.

[0081] It should be noted that in the coarse winding forming section 102, when the long flavoring rod 2P is formed into a cylindrical cross-section, the guide member described in the forming section 101B (for example, the clamp disclosed in Japanese Patent Application Publication No. 7-184625) can also be used. During the process of forming the long outer winding paper 22P into a cylindrical shape by the guide member, each of the long thin winding rods 21P1 to 21P3 located inside the long outer winding paper 22P is appropriately compressed by the inner wall surface of the cylindrical guide member of the guide member. As a result, the cross-section of each of the long thin winding rods 21P1 to 21P3, which initially had a circular (approximately perfect circular shape), can be deformed into an elliptical shape. It should be noted that the diameters (before compression) of each of the long thin winding rods 21P1 to 21P3 can be the same or different. In the former case, for example, if the diameter of the fragrance stick is set to 7mm, then the diameter (before compression) of each long thin coil 21P1 to 21P3 can be set to about 3.5mm to 4mm.

[0082] Furthermore, in the process of forming the long fragrance sticks, on the inner surface of the outer winding paper 22P that bundles the multiple long thin coils 21P1 to 21P3, a paste (referred to in this technical field as "track paste") for bonding the inner winding paper 23P and the outer winding paper 22P corresponding to each long thin coil 21P1 to 21P3 is applied linearly along the long direction of the outer winding paper 22P, and then the long thin coils 21P1 to 21P3 are wound based on the outer winding paper 22P. This allows each long thin coil 21P1 to 21P3 to be bonded to the outer winding paper 22P. It should be noted that the bonding portions of each long thin coil 21P1 to 21P3 relative to the outer winding paper 22P correspond to the aforementioned bonding portions BP.

[0083] As described above, by compressing each of the long, thin coils 21P1 to 21P3 from the outside and winding them integrally with the long outer winding paper 22P, a long fragrance stick 2P is obtained, which has multiple long, thin coils 21P1 to 21P3 with elliptical cross-sections on the inner side of the long outer winding paper 22P. It should be noted that in the above-described long fragrance stick forming process, the long, thin coils 21P1 to 21P3 can be tightly pressed together while being wound with the long outer winding paper 22P to suppress the formation of a central gap 25 on the central side of the cross-section of the long fragrance stick 2P, or to reduce the cross-sectional area of ​​the central gap 25.

[0084] Next, in the cutting section 103 of the coiling machine, the long fragrance sticks 2P conveyed along the conveying direction are sequentially cut into predetermined lengths (e.g., the length of one fragrance stick) (cutting process). The result is fragrance sticks 2 of the predetermined length. It should be noted that after cutting the long fragrance sticks 2P into the predetermined length, the cross-sectional shape of the fragrance sticks 2 can be checked, and feedback control can be performed to adjust the position of the thin coil 21 on its cross-section, the filling amount of the fragrance source 24, etc.

[0085] For the flavor stick 1, a separate mouthpiece 3 is prepared. The flavor stick 2 and the mouthpiece 3 are connected by rolling them together with the connecting paper 8 (connection process). Thus, the following is obtained: Figure 2 The fragrance stick shown is 1.

[0086] Next, regarding the reference Figures 5-9 The manufacturing method described herein (hereinafter referred to as the "first manufacturing method") and a different manufacturing method (the second manufacturing method) will be described. Figures 10-15 This diagram illustrates a second manufacturing method for the fragrance stick 1. The second manufacturing method for the fragrance stick 1 includes a step of forming the fragrance stick and a connecting step. The step of forming the fragrance stick further includes a step of forming a long fragrance stick and a cutting step. The step of forming the fragrance stick in the second manufacturing method can, for example, be implemented by using an existing dual-filter rolling machine. Figure 10 This diagram illustrates the first half of the process for forming the long fragrance stick in the second manufacturing method. Figure 10 The reference numeral 110 shown in the figure indicates a conveyor that transports various materials used to manufacture the fragrance stick 1 along the direction of the hollow arrow in the figure (conveyor direction). Figure 10 As shown, a long strip of outer winding paper 22P is conveyed on conveyor 110. Figure 11 This is a diagram illustrating the shape of a cross-section orthogonal to the conveying direction of the conveyor 110. The conveyor 110 has a concave trough 110A along the conveying direction, in which it receives strips of outer wound paper 22P and various other materials, and conveys them. For example, at the bottom of the trough 110A of the conveyor 110, suction holes are formed to apply suction pressure to the strips of outer wound paper 22P, and the strips of outer wound paper 22P are conveyed while deforming along the wall of the trough 110A.

[0087] In the second manufacturing method, various components for forming the intermediate assembly MA of the flavor stick 1 are supplied onto the long outer winding paper 22P conveyed by the conveyor 110 of the winding machine. Reference numeral 111 indicates a leakage suppression component supply roller that supplies a double-length leakage suppression component 4W to the long outer winding paper 22P along the conveying path. The double-length leakage suppression component 4W is divided into two leakage suppression portions 4 by a cutting blade at the central position in the length direction. That is, the double-length leakage suppression component 4W is a component that makes the leakage suppression portion 4 twice the normal length (the length of the leakage suppression portion 4 in the final form of the flavor stick 1). It should be noted that the leakage suppression portion 4 corresponds to the "first component" constituting part of the mouthpiece portion 3. The first component can also be a component disposed at the front end of the mouthpiece portion 3. Moreover, the double-length leakage suppression component 4W having twice the length of the leakage suppression portion 4 (first component) corresponds to the "double-length first component".

[0088] Reference numerals 112 to 114 indicate the first to third fine roll supply rollers that supply double-length fine rolls 21W1 to 21W3 to the long outer winding paper 22P conveyed by conveyor 110. The double-length fine rolls 21W1 to 21W3 are divided into two fine rolls 21 by a cutting blade at the center of their length. That is, the double-length fine rolls 21W1 to 21W3 are fine rolls that make the fine roll 21 twice the normal length (the length of the fine roll 21 in its final form with the fragrance stick 1 inserted). In other words, the double-length fine rolls 21W1 to 21W3 are substantially equal to the fine rolls with the fragrance source 24 wound around the inner winding paper 23, which has twice the normal length.

[0089] like Figure 10 As shown, the leakage suppression component supply roller 111 and the first to third fine winding rod supply rollers 112 to 114 are arranged sequentially from the upstream side of the conveying path of the conveyor 110 (first position P1 to fourth position P4). The leakage suppression component supply roller 111 and the first to third fine winding rod supply rollers 112 to 114 are located, for example, above the conveyor 110, with the rotation axis of each roller orthogonal to the conveying direction of the conveyor 110. Furthermore, the leakage suppression component supply roller 111 and the first to third fine winding rod supply rollers 112 to 114 rotate while drawing the target material to be supplied onto the outer winding paper 22P conveyed by the conveyor 110, and sequentially supply the target material onto the outer winding paper 22P at predetermined time intervals. It should be noted that various materials are sequentially supplied to each supply roller 111 to 114 via a hopper (not shown), an intermediate roller, or the like.

[0090] like Figure 10As shown, the leakage suppression component supply roller 111, located at the first position P1, supplies double-length leakage suppression components 4W to the outer winding paper 22P of the long strip at regular intervals. Here, the spacing between the double-length leakage suppression components 4W supplied to the outer winding paper 22P of the long strip is approximately equal to the length of the double-length thin winding rods 21W1 to 21W3, forming a rod mounting space S1 for mounting the double-length thin winding rods 21W1 to 21W3. Moreover, the first to third thin winding rod supply rollers 112 to 114, located at the second position P2 to the fourth position P4, sequentially supply double-length thin winding rods 21W1 to 21W3 to the rod mounting space S1 formed between the double-length leakage suppression components 4W.

[0091] Figure 12 This diagram illustrates the supply of various components to the leakage suppression component supply roller 111 and the thin winding rod supply rollers 112-114 at positions P1 to P4. As described above, double-length leakage suppression components 4W and double-length thin winding rods 21W1-21W3 are sequentially supplied to the long outer winding paper 22P conveyed by the conveyor 110. Furthermore, at position P4, by supplying the double thin winding rods 21W3 into the rod mounting space S1, the three double thin winding rods 21W1-21W3 are bundled together and arranged in series with the double-length leakage suppression component 4W on the long outer winding paper 22P (see reference). Figure 10 as well as Figure 12 (etc.). It should be noted that the term "bundled" here refers to the arrangement of multiple double-length thin coil rods 21W1 to 21W3 side by side and close to each other.

[0092] Figure 13 This diagram illustrates the latter half of the long fragrance stick forming process in the second manufacturing method. In the latter half of the long fragrance stick forming process, a bundle (illustrated in the figure by reference numeral 21W) of a double-length leakage suppression component 4W (double-length first component) and each double-length thin coil 21W1 to 21W3 (double-length thin coil) arranged in series with it is integrally wound by the outer winding paper 22P. As a result, a long, cylindrical fragrance stick 2P' is formed by the bundles of double-length thin coils 21W1 to 21W3 and the double-length leakage suppression component 4W being arranged alternately in the length direction and integrally wound by the outer winding paper 22P. In the long fragrance stick 2P', the section where the bundles of double-length thin coils 21W1 to 21W3 are arranged is called the "thin coil section ST1", and the section where the double-length leakage suppression component 4W is arranged is called the "leakage component section ST2".

[0093] The winding of the bundle of double-length thin rods 21W1 to 21W3 using the long outer winding paper 22P and the double-length leakage suppression component 4W can be performed using the clamps (guide components) known as described in Japanese Patent Application Publication No. 7-184625, similar to the forming process of the long fragrance rod in the first manufacturing method. This allows for the compression of each double-length thin rod 21W1 to 21W3 from the outside and their winding by the long outer winding paper 22P. As a result, a long fragrance rod 2P′ with an elliptical cross-section is obtained from the thin rod section ST1, where each double-length thin rod 21W1 to 21W3 has a thin cross-section in an elliptical shape.

[0094] Next, the cutting process of the second manufacturing method will be explained. Figure 13 The diagram of conveyor 110 is omitted. Figure 13 Reference numeral 115 in the attached figure indicates the cutting blade of the rolling machine. The cutting blade 115 cuts the long fragrance rod 2P′ at the center position along the length of the double-length leakage suppression component 4W and at the center position along the length of each double-length thin coil 21W1 to 21W3. In other words, during the cutting process, the long fragrance rod 2P′ is cut at the center position of both the thin coil section ST1 and the leakage component section ST2. As described above, each double-length thin coil 21W1 to 21W3 is separated into two thin coils 21 by being cut at the center position along the length. Furthermore, the double-length leakage suppression component 4W is separated into two leakage suppression sections 4 by being cut at the center position along the length. After the above cutting process, an intermediate assembly MA (see reference 1) can be formed in which the leakage suppression section 4 is connected to the rear end of the fragrance rod 2 formed by bundling multiple thin coils 21. Figure 14 It should be noted that, in the above example, the configuration of using a single cutting blade 115 to cut the long fragrance rod 2P′ in the cutting process was described, but multiple cutting blades 115 can also be used to cut the long fragrance rod 2P′. For example, the first cutting blade and the second cutting blade can be arranged at different positions along the conveying direction of the conveyor 110, with the first cutting blade used to cut the thin coil section ST1 and the second cutting blade used to cut the leakage component section ST2. Furthermore, either the first cutting blade or the second cutting blade can be arranged upstream in the conveying direction of the conveyor 110.

[0095] Figure 14 This diagram shows the intermediate assembly MA formed during the process of forming the fragrance stick, and the separately prepared cooling section 5, filter section 6, and splicing paper 8. Figure 14The illustrations of the leakage suppression section 4, cooling section 5, and filter section 6 are simplified. Here, the cooling section 5 and filter section 6 are equivalent to "second components" constituting part of the mouthpiece section 3. The cooling section 5 and filter section 6, which are equivalent to second components, can also be considered as the remaining components constituting the mouthpiece section 3 other than the leakage suppression section 4, which is equivalent to the first component. The second manufacturing method of the flavor stick 1 includes a connecting process. In the connecting process of the second manufacturing method, with one or more second components constituting part of the mouthpiece section 3 connected in series with the leakage suppression section 4, which is equivalent to the first component in the intermediate assembly MA, the intermediate assembly MA and the one or more second components are integrally wound by the splicing paper 8. In this example, the cooling section 5 and filter section 6 are respectively equivalent to second components. Therefore, as Figure 14 As shown, at the rear end of the leakage suppression section 4 in the intermediate assembly MA, with the cooling section 5 and the filter section 6 arranged in series, the intermediate assembly MA, the cooling section 5, and the filter section 6 are integrally connected by winding the splicing paper 8 around them. The result is as follows: Figure 15 As shown, fragrance stick 1 is complete. It should be noted that... Figure 15 The internal structures of the leakage suppression section 4, cooling section 5, and filter section 6 are not shown in the diagram.

[0096] use Figure 1 The fragrance extraction device 30 shown is used to extract the fragrance stick 1 constructed as described above. Figure 1 As shown, the fragrance extraction device 30 includes a heating chamber 31, an external heater 32, a power supply unit 33 that supplies operating power to the external heater 32, and a control unit 34 that controls the power supplied to the external heater 32. The heating chamber 31 is a generally cylindrical cavity defined by the chamber side peripheral wall 31B and the chamber bottom wall 31C, which are part of the frame of the fragrance extraction device 30. When the fragrance stick 1 is inserted into the heating chamber 31, the fragrance stick 2 is inserted from the front end 1b side through the insertion port 31A.

[0097] The external heater 32 is a heating element, such as a metal thin-film heater or a membrane heater, that generates heat using electricity supplied from the power supply unit 33. A metal thin-film heater is a planar heating heater that uses a metal thin film as its heating element and is flexible. A membrane heater, for example, may have a structure consisting of an overlapping layer of an electrically insulating material and a layer of heating rails, which is an example of a heating element. However, the type of external heater 32 is not particularly limited as long as it can heat the fragrance rod 2 inserted into the heating chamber 31 from its outer periphery. Alternatively, the external heater 32 may be arranged so that its outer periphery faces the fragrance rod 2 inserted into the heating chamber 31 from its front end to its rear end.

[0098] Additionally, the bottom wall 31C of the fragrance extraction device 30 is connected to one end of the air flow path 36. The other end of the air flow path 35 is connected to the air intake 37 formed on the frame of the fragrance extraction device 30.

[0099] The fragrance extraction device 30 can also be triggered by the operation of a switch or similar device mounted on the housing to start heating. Alternatively, the fragrance extraction device 30 can be triggered by detecting that the fragrance stick 1 (fragrance rod 2) is inserted into the heating chamber 31. For example, the control unit 34 may include a sensor that detects the insertion of the fragrance stick 1 (fragrance rod 2) into the heating chamber 31, and use this sensor to detect the insertion of the fragrance stick 1 (fragrance rod 2) as a trigger to start heating.

[0100] The power supply unit 33 is a power supply unit that supplies power for heating to the external heater 32 via the control unit 34. The control unit 34 accepts a request to start the heating operation as a trigger, such as when the operation switch is operated or when the aroma stick 1 is detected to be inserted into the heating chamber 31, and causes the power supply unit 33 to supply operating power to the external heater 32.

[0101] In addition, the control unit 34 may also be equipped with a temperature sensor that detects the temperature inside the heating chamber 31 or the temperature of the aroma rod 2, and may adjust the amount of current supplied from the power supply unit 33 to the external heater 32 based on the temperature detected by the temperature sensor.

[0102] The fragrance stick 1, constructed as described above, is used in a fragrance extraction device 30 with the external heater 32 activated when the fragrance stick 2 is inserted into the heating chamber 31 of the fragrance extraction device 30. This heats the fragrance source 24 in each of the thin coils 21. As a result, the aerosol generating substrate contained in the fragrance source 24 evaporates, releasing fragrance components and generating an aerosol containing the fragrance components. The aerosol containing the fragrance components flows towards the mouthpiece 3 (downstream side) within each thin coil 21, flowing into the mouthpiece 3 from the rear end of each thin coil 21. Furthermore, the aerosol containing the fragrance components passes sequentially through the aerosol flow paths 41A-41C of the leakage suppression section 4 located at the front end of the mouthpiece 3, the cooling section 5, and the filter section 6, and is finally drawn into the user's mouth from the inhalation end 1a.

[0103] The fragrance stick 2 of this embodiment has a form in which multiple thin coils 21, formed by winding a fragrance source 24 around an inner winding paper 23, are further integrally bound together by an outer winding paper 22. That is, in this embodiment, the fragrance stick 2 winds the fragrance source 24 in each thin coil 21 around the inner winding paper 23. As a result, the contact area between the fragrance source 24 in the fragrance stick 2 and the winding paper (inner winding paper 23) that winds it can be sufficiently ensured. Therefore, it is possible to prevent the fragrance source 24 of each thin coil 21 from falling off (spilling) from the front end 1b side.

[0104] Furthermore, in the fragrance rod 2 of this embodiment, the inner winding paper 23 of each thin winding rod 21 is bonded to the outer winding paper 22 at the adhesive portion BP. Therefore, when the fragrance rod 2 is inserted (installed) into the heating chamber 31, even if insertion resistance is generated due to friction between the chamber side peripheral wall 31B of the heating chamber 31 and the outer winding paper 22, it is difficult for the thin winding rods 21 located inside the outer winding paper 22 to be pressed into the mouthpiece portion 3 side (rear end side) due to positional displacement. Moreover, each thin winding rod 21 in the fragrance rod 2 has an elliptical cross-section, and its minor axis is arranged radially along the fragrance rod 2. As a result, the major axis of each thin winding rod 21 is easily arranged circumferentially along the fragrance rod 2, which can reduce the area of ​​the outer peripheral gap portion 26.

[0105] Furthermore, the flavor stick 1 has a leakage suppression section 4 at the front end of the mouthpiece portion 3. In the leakage suppression section 4, aerosol flow paths 41A to 41C, through which aerosols generated in the multiple thin coils 21 flow, extend axially, and have a central side sealing section 42A and an outer peripheral side sealing section 42B arranged facing the central side gap 25 and the outer peripheral side gap 26 in the flavor stick 2. Thus, when the flavor stick 1 is inhaled, leakage of air drawn into the flavor stick 2 from the front end 1b side through the central side gap 25 and the outer peripheral side gap 26 downstream can be suppressed. It should be noted that the aerosol flow paths of the leakage suppression section 4 are not particularly limited in terms of position, size, number, or shape, as long as they allow the aerosols flowing from each thin coil 21 to flow downstream. Furthermore, the leakage suppression section 4 can be omitted if air leakage through the central side gap 25 and the outer peripheral side gap 26 is permissible.

[0106] Figure 16 This is a diagram illustrating a modified example of the leakage suppression part 4 in Embodiment 1. Figure 16 The figure shows the cross-section of the leakage suppression section 4 in the modified example. The dotted lines in the figure indicate the cross-sectional shape of each thin winding rod 21, that is, the position of the outer surface 23A of the inner winding paper 23. In the modified example shown in (a), the aerosol flow paths 41A to 41C are arranged facing the rear ends of each thin winding rod 21. In addition, as shown in (a), the cross-sectional area of ​​the aerosol flow paths 41A to 41C is smaller than the cross-sectional area of ​​each thin winding rod 21. Moreover, the rear ends of each thin winding rod 21 are arranged across the aerosol flow paths 41A to 41C corresponding to the sealing surfaces 42 (central sealing section 42A, outer peripheral sealing section 42B) of the leakage suppression section 4.

[0107] That is, in the above structure, a portion of the rear end of each thin coil 21 faces the opposing aerosol flow paths 41A to 41C, and a portion abuts against the sealing surface 42 (central sealing portion 42A, outer peripheral sealing portion 42B), thereby being supported from the rear. As a result, the region in the sealing surface 42 (central sealing portion 42A, outer peripheral sealing portion 42B) of the leakage suppression portion 4 that faces the rear end of each thin coil 21 (the region that abuts against the rear end) functions as an anti-displacement portion for each thin coil 21 when the flavor rod 2 is inserted into the heating chamber 31. Thus, when the flavor rod 2 is inserted (installed) into the heating chamber 31, even if insertion resistance is generated due to friction between the chamber side peripheral wall 31B of the heating chamber 31 and the outer winding paper 22, it is difficult for the thin coil 21 located inside the outer winding paper 22 to be pressed into the mouthpiece portion 3 side (rear end side) to shift positionally. Thus, if the sealing surface 42 of the leakage suppression part 4 also functions as an anti-deviation part (support part) to suppress position deviation by partially supporting the rear end of each thin winding rod 21, the bonding of the inner winding paper 23 and the outer winding paper 22 in each thin winding rod 21 can be omitted.

[0108] Next, in the modified example shown in (b), a single aerosol flow path 41 is arranged across the rear end of each thin coil 21 on the central side of the cross-section of the leakage suppression section 4. That is, the single aerosol flow path 41 is arranged partially facing the rear end of each thin coil 21. In the example shown in (b), the aerosol flow path 41 is arranged facing the rear end of the central side gap 25 in the fragrance rod 2, but within the range that allows air leakage through the central side gap 25, the configuration shown in (b) can also be adopted.

[0109] Furthermore, the diameter of the fragrance stick 2 in this embodiment can also be specified such that it is compressed by the chamber side peripheral wall 31B during insertion into the heating chamber 31. For example, the cross-section of the heating chamber 31 (the cross-section in the direction orthogonal to the insertion / removal direction of the fragrance stick 2) can also be smaller than the diameter of the fragrance stick 2. Thus, during the insertion of the fragrance stick 2 into the heating chamber 31, the fragrance stick 2 is compressed from the outer periphery by the chamber side peripheral wall 31B, flattening the central gap 25 and the outer periphery gap 26, or reducing their cross-sectional area. Therefore, air leakage through the central gap 25 and the outer periphery gap 26 is more easily suppressed during the absorption of the fragrance stick 1.

[0110] It should be noted that the flavor sources 24 of the multiple thin coils 21 included in the flavoring rod 2 can be the same or different. In the latter case, for example, the first thin coil 21 included in the flavoring rod 2 can be filled with a uniformly folded sheet-like flavor source 24 inside the inner winding paper 23. Alternatively, for example, the second thin coil 21 can be filled with a tobacco-like flavor source 24 inside the inner winding paper 23. Alternatively, for example, the third thin coil 21 can be filled with a plant material (e.g., herbal material) without tobacco components as the flavor source 24 inside the inner winding paper 23. These combinations are, of course, just examples, but by making the flavor source 24 different in at least one thin coil 21 among the multiple thin coils 21 of the flavoring rod 2, the freedom of tobacco flavor design is increased, and a rich tobacco flavor can be easily achieved.

[0111] Furthermore, as described above, when the various thin coils 21 in the fragrance rod 2 possess different types of fragrance sources 24, the cross-sectional areas of the thin coils 21 can also be made different from each other. Therefore, the amount of fragrance source 24 can be easily controlled according to its type.

[0112] Here, the outer periphery of the aroma source 24 of each thin coil 21 in the aroma rod 2 is covered by the inner winding paper 23. Therefore, the aerosol containing aroma components emitted from the aroma source 24 of each thin coil 21 is introduced into the mouthpiece 3 with minimal mixing. Thus, when multiple thin coils 21 contain different types of aroma sources 24, it is expected that the aroma of the aroma components contained in the aerosol emitted from each of the different types of aroma sources 24 will be more prominent. It should be noted that, from this point of view, the mouthpiece 3 may also have a flow path structure that guides the aerosol flowing from each of the multiple thin coils 21 to the inhalation end 1a respectively. For example, the leakage suppression section 4 can be improved by... Figure 4 The aerosol flow paths 41A to 41C shown allow the aerosols flowing from each of the thin coils 21 to flow separately. Additionally, regarding the cooling section 5, for example, a folded sheet can be configured to form a flow path along the axial direction of the mouthpiece section 3, making it difficult for the aerosols flowing from each of the thin coils 21 to mix.

[0113] <Implementation Method 2>

[0114] Next, the fragrance stick of Embodiment 2 will be described. Figure 17 This is a diagram showing a cross-section of the fragrance rod 2A according to Embodiment 2. (See diagram below.) Figure 17 As shown, the fragrance stick 2A has two thin coiled rods 21. In the fragrance stick 2A with two thin coiled rods 21 (two-coil type), the basic structure is the same as that of the fragrance stick 2 with three thin coiled rods 21 (three-coil type) mentioned above.

[0115] exist Figure 17 In this document, structures identical to those described in the above embodiments are labeled with the same reference numerals, and detailed descriptions are omitted. Figure 17 In the example shown, the pair of thin winding rods 21 have approximately congruent elliptical shapes and are arranged with their major axes parallel. Furthermore, the minor axes of each thin winding rod 21 are arranged radially along the fragrance rod 2A. More specifically, the minor axes of each thin winding rod 21 lie on the same straight line passing through the central axis CL, and the pair of thin winding rods 21 are arranged at the center of the cross-section of the fragrance rod 2A, with their outer surfaces 23A of the inner wound paper 23 in contact with each other. This suppresses the formation of the aforementioned central side gap 25, or reduces the cross-sectional area of ​​the central side gap 25. Additionally, by arranging the pair of thin winding rods 21 with their major axes parallel in the fragrance rod 2A, the area of ​​the outer peripheral side gap 26 can be reduced.

[0116] Figure 17 The flavoring rod 2A shown is also constructed by integrally connecting the flavoring rod 1 to the mouthpiece portion 3 via the aforementioned splicing paper 8 (see reference). Figure 2 The fragrance stick 2A of this variant can be manufactured through the same process as the fragrance stick 2 of the three-piece type. Of course, the two-piece type differs from the three-piece type in that it has two thin coils 21. Therefore, in this embodiment, two long thin coils 21P1 and 21P2 are provided in the above-described long thin coil forming process. If the diameter of the manufactured fragrance stick 2 is set to 7mm, then the diameter (before compression) of the two long thin coils 21P1 and 21P2 can be set to approximately 4mm to 4.5mm.

[0117] Figure 18 This is a cross-sectional view illustrating the leakage suppression section 4 of Embodiment 2. The dotted lines in the diagram indicate the cross-sectional shape of each thin winding rod 21, i.e., the position of the outer surface 23A of the inner winding paper 23. In the configurations shown in (a) and (b), the leakage suppression section 4 has a pair of aerosol flow paths 41A and 41B formed along the central axis CL2 for allowing aerosol from a pair of thin winding rods 21 to flow through. In the example shown in (a), the cross-sections of each aerosol flow path 41A and 41B are congruent to the corresponding thin winding rod 21, and each aerosol flow path 41A and 41B is arranged facing each thin winding rod 21. Furthermore, as shown in (a), the leakage suppression section 4 is configured such that the outer peripheral sealing portion 42B of the sealing surface 42 seals the rear end of the outer peripheral gap portion 26 of the fragrance rod 2A.

[0118] In the configuration shown in (b), the cross-sectional area of ​​each aerosol flow path 41A, 41B is smaller than the cross-sectional area of ​​the opposing thin coils 21. Furthermore, the rear end of each thin coil 21 is positioned across the aerosol flow paths 41A, 41B corresponding to the sealing surface 42 (outer peripheral sealing portion 42B) of the leakage suppression section 4. That is, in the configuration of (b), a portion of the rear end of each thin coil 21 faces the opposing aerosol flow paths 41A, 41B, and a portion abuts against the sealing surface 42 (outer peripheral sealing portion 42B), thereby being supported from the rear. As a result, the region in the sealing surface 42 (outer peripheral sealing portion 42B) of the leakage suppression section 4 that faces the rear end of each thin coil 21 (the region abutting the rear end) functions as an anti-deviation portion (support member) for each thin coil 21. Therefore, even if there is insertion resistance when the flavor rod 2A is inserted into the heating chamber 31, it is possible to suppress the positional displacement of each thin coil 21 when it is pressed into the mouthpiece portion 3 (rear end side).

[0119] In the configuration shown in (b), the leakage suppression part 4 has a single aerosol flow path 41 on the central side of the cross-section of the leakage suppression part 4, and the sealing surface 42 (outer peripheral sealing part 42B) partially seals the rear end of the outer peripheral gap 26 of the fragrance rod 2A.

[0120] <Implementation Method 3>

[0121] Next, the fragrance rod of embodiment 3 will be described. In the fragrance rods 2 and 2A described above, the fragrance source 24 is filled inside the paper 23 wound inside the thin winding rod 21. However, it is not limited to this filling form. As long as the fragrance source and aerosol generating substrate are included inside the paper 23 wound inside, various forms can be adopted.

[0122] Figure 19 This is a cross-sectional view showing the fragrance rod 2B of Embodiment 3. The fragrance rod 2B differs from the fragrance rod 2 of Embodiment 1 only in the shape of the fragrance source containing aerosol, which is disposed inside the inner side of the inner winding paper 23 in the thin winding rod 21. The other structures are the same as the fragrance rod 2.

[0123] Figure 19Reference numeral 24A in the attached figure refers to a fragrance source disposed on the inner side of the inner winding paper 23. The fragrance source 24A comprises a fragrance source, an aerosol generating substrate, and a holding substrate 240 that holds them. In this embodiment, suitable fragrances as described above can be used as the fragrance source. For example, the holding substrate 240 of the fragrance source 24A is a substrate sheet that holds the liquid fragrance and aerosol generating substrate impregnated within it; the material of this holding substrate can be nonwoven fabric, etc. The fragrance impregnated in the holding substrate 240 (substrate sheet) of the fragrance source 24A may also be tobacco-free. Furthermore, the holding substrate 240 (substrate sheet) of the fragrance source 24A may, for example, be bonded along the inner surface of the inner winding paper 23 in the thin winding rod 21. The thickness of the holding substrate 240 (substrate sheet) is not particularly limited; for example, a thickness of approximately 0.1 mm to 2 mm is cited as an example. In this embodiment, the fragrance rod 2A is formed by continuously rolling a long strip of substrate sheet, which is impregnated with fragrance source and aerosol generating substrate, into a cylindrical shape in the length direction using long strip of thin rolling paper. This forms multiple long strips of thin rolling rods side by side in the conveying direction of the rolling machine. The subsequent processes, namely the long fragrance rod forming process and the cutting process, are the same as in Embodiment 1.

[0124] It should be noted that the fragrance sources (fragrances) contained in the fragrance sources 24A of each fine roll 21 may be the same or different. Additionally, in Figure 19 In the structural example shown, the retaining substrate 240 (substrate sheet) of the fragrance source 24A of each thin coil 21 has a cylindrical cross-section, but is not limited to this. The cross-section of the retaining substrate 240 (substrate sheet) can be any shape, such as a C-shape, an S-shape, a spiral shape, etc. Alternatively, the substrate sheet that impregnates the liquid fragrance and aerosol generation substrate can be cut into small pieces and filled inside the inner winding paper 23. Of course, a portion of the multiple thin coils 21 included in the fragrance rod 2A can be replaced with Figure 3 The thin rolling rod 21 described in the figure uses tobacco filling material as the flavor source 24.

[0125] Figure 20 This diagram illustrates the variations in the fragrance source 24A within the thin coil 21 of Embodiment 3. In (a), the fragrance source 24A (holding substrate 240) has a C-shape. In (b), the fragrance source 24A (holding substrate 240) has an S-shape. In (c), the fragrance source 24A (holding substrate 240) has a zigzag shape. In (d), the fragrance source 24A (holding substrate 240) has a vortex shape. Of course, Figure 14 The change shown is also an example of the morphology of the fragrance source 24A (keeping the substrate 240).

[0126] Furthermore, in the above embodiments, the ratio of the total cross-sectional area of ​​the central side gap 25 and the outer peripheral side gap 26 to the cross-sectional area of ​​the fragrance rod 2 is not particularly limited; as an example, a form of 10% or less is given, and preferably 5% or less. This reduces air leakage downstream through the central side gap 25 and the outer peripheral side gap 26.

[0127] Furthermore, as mentioned above, there is no particular limitation on the number of fine coiled rods 21 included in the fragrance rod 2 as long as there are two or more. However, from the viewpoint of balancing the prevention of fragrance source 24 falling off from the front end of each fine coiled rod 21 and the ease of manufacturing the fragrance rod 2, it is preferable to set the number of fine coiled rods 21 to three. It should be noted that the number of fine coiled rods 21 can also be switched along the axial direction of the fragrance rod 2. For example, three fine coiled rods 21 can be arranged on the front end side of the fragrance rod 2, and two fine coiled rods 21 can be arranged on the rear end side of the fragrance rod 2.

[0128] Furthermore, in order to efficiently transfer heat from the external heater 32 to the inner fragrance source 24, the inner winding paper 23 for the thin winding rod 21 is preferably made of a material with high heat transfer properties. Therefore, the inner winding paper 23 is preferably made of a material with low weight per unit area and high density. For example, it is preferable to set the weight per unit area of ​​the inner winding paper 23 to be 10 gsm or more and 40 gsm or less, and the density of the inner winding paper 23 to be 1 g / cm³. 3 Above and 1.5g / cm 3 The following configuration is also possible. Furthermore, to improve the heat transfer performance of the inner winding paper 23, materials coated with pectin, sodium alginate, or similar agents may be used. Alternatively, materials with excellent heat transfer performance, such as aluminum laminate paper, may be used as the inner winding paper 23.

[0129] Furthermore, from the viewpoint of suppressing aerosol leakage through the central gap 25 and the outer peripheral gap 26, it is preferable to use a material with low air permeability for the inner winding paper 23. For example, a configuration in which the air permeability of the inner winding paper 23 is set to 0 CORESTA units (CU) or more and 200 CORESTA units (CU) or less can be used. It should be noted that the aforementioned air permeability can, for example, be a value measured according to ISO 2965:2009.

[0130] Furthermore, in order to efficiently transfer heat from the external heater 32 to the inner thin winding rod 21 (fragrance source 24), the outer winding paper 22 in the fragrance rod 2 is preferably made of a material with high heat transfer properties. Therefore, the outer winding paper 22 is preferably made of a material with low weight per unit area and high density. For example, it is preferable to set the weight per unit area of ​​the outer winding paper 22 to be 10 gsm or more and 40 gsm or less, and the density of the outer winding paper 22 to be 1 g / cm³. 3 Above and 1.5g / cm 3The following configuration is also possible. Furthermore, to improve the heat transfer performance of the outer winding paper 22, materials coated with agents such as pectin or sodium alginate can be used. Alternatively, materials with excellent heat transfer performance, such as aluminum laminate paper, can also be used as the outer winding paper 22.

[0131] Furthermore, from the viewpoint of suppressing damage to the outer winding paper 22 when inserting or removing the rod into the heating chamber 31, it is preferable to adjust the static friction coefficient between the external heater 32 and the outer winding paper 22 to 0.45 or higher and 0.75 or lower, and the dynamic friction coefficient to 0.4 or higher and 0.7 or lower. Furthermore, from the viewpoint of suppressing damage to the outer winding paper 22 when inserting or removing the rod into the heating chamber 31, it is preferable to set the tensile strength of the outer winding paper 22 to 10 to 20 N / 15 mm, and the wet tensile strength of the outer winding paper 22 to 5 to 20 N / 15 mm. The method for measuring the tensile strength of the outer winding paper 22 is, for example, based on JIS P 8113. The method for measuring the wet tensile strength of the outer winding paper 22 is, for example, based on the wet tensile strength test described in Japanese Patent Application Publication No. 2019-187451.

[0132] Furthermore, the hardness of the thin winding rod 21 is preferably 60% or more and 85% or less when the fragrance source 24 is filled inside the inner side of the inner wound paper 23. Here, "hardness" refers to the resistance to deformation in the cross-sectional direction of the thin winding rod 21. The hardness of the thin winding rod 21 can be based, for example, on Japanese Patent Publication No. 2019-506868 (paragraphs 0029-0031). Figure 1 The test shall be performed according to the test method described in [the document]. Additionally, the test for determining the hardness of the thin coil 21 can be performed using the standard operating procedure of the Borgwaldt Hardness Tester H10 (manufactured by Heinr Borgwaldt GmbH).

[0133] That is, the hardness of the thin coil 21 is calculated by the following formula.

[0134] Hardness (%) = (Dd / Ds) × 100

[0135] In the formula, Ds is the diameter height of the thin coil 21 before loading by the Borgwaldt Hardness Tester H10, and Dd is the radial height after the load bar of the Borgwaldt Hardness Tester H10 applies a certain load (88g) to the thin coil 21 from the diameter direction for a specified loading time (5 seconds). Figure 21 This is a diagram illustrating the general process of hardness measurement of the fine coil 21. Figure 21The reference numeral F in the attached figure indicates the load applied to the thin coil rod 21 in the diameter direction during the measurement test. The reference numeral d is the amount of compression (d = Ds - Dd) that the thin coil rod 21 is pressed down in the diameter direction by the loading of the load rod. It should be noted that the stiffer the thin coil rod 21 (the smaller the compression), the closer its hardness is to 100%.

[0136] The embodiments of the present invention have been described above, but the fragrance stick, non-combustion heated fragrance extraction product, and method for manufacturing the fragrance stick are not limited thereto. Furthermore, the various forms disclosed in the above embodiments and variations can be combined with any other forms disclosed in this specification.

[0137] Explanation of reference numerals in the attached figures

[0138] 1: Flavor stick; 2: Flavor rod; 3: Mouthpiece; 21: Thin rolling rod; 22: Outer wrapping paper; 23: Inner wrapping paper; 24: Flavor source.

Claims

1. A fragrance stick, wherein, The fragrance stick has the following features: A fragrance rod, which is inserted into the heating chamber of the fragrance extraction device and heated from the outer periphery by an external heater disposed on the side periphery of the heating chamber; and The mouthpiece is connected to the rear end of the flavoring rod; The fragrance stick has multiple thin coils and an outer wrapping paper that binds and winds the multiple thin coils together. The plurality of thin rollers each have an inner winding paper and a fragrance source, the fragrance source comprising an aerosol generating substrate and disposed on the inner side of the inner winding paper.

2. The fragrance stick as described in claim 1, wherein, The inner winding paper of the plurality of thin winding rods is bonded to the outer winding paper.

3. The fragrance stick as described in claim 1 or 2, wherein, A leakage suppression part is provided at the front end of the mouthpiece and connected to the rear end of the flavor rod. The leakage suppression part extends axially and is provided with an aerosol flow path for the aerosol generated in the plurality of thin rods to flow through, and has a sealing part that blocks the rear end of the gap formed between the outer winding paper and the plurality of thin rods.

4. The fragrance stick as described in claim 3, wherein, The leakage suppression part includes an outer peripheral sealing part, which is configured to face the outer peripheral gap part formed in the gap part near the outer peripheral side of the cross-section of the fragrance rod.

5. The fragrance stick as described in claim 3, wherein, The leakage suppression section includes a central side sealing section, which is arranged facing the central side gap section formed on the central side of the cross-section of the fragrance rod in the gap section.

6. The fragrance stick as described in claim 3, wherein, The aerosol flow path is configured to face the rear ends of the plurality of thin coils.

7. The fragrance stick as described in claim 3, wherein, The rear ends of each of the plurality of thin coils are configured to span the enclosure and the aerosol flow path. The area in the closed section facing the rear end of the thin coil serves as an anti-deviation part for the thin coil when the fragrance rod is inserted into the heating chamber.

8. A non-combustible aroma extraction product, wherein, The non-combustible aroma extraction product has the following features: The fragrance stick according to any one of claims 1 to 7; and A fragrance extraction device for extracting fragrance sticks, the fragrance extraction device having a heating chamber for inserting the fragrance stick into the fragrance stick and an external heater disposed on the side periphery of the heating chamber.

9. A method for manufacturing a fragrance stick, comprising: a fragrance rod inserted into a heating chamber of a fragrance extraction device and heated from the outer periphery by an external heater disposed on the side periphery of the heating chamber; and a mouthpiece connected to the rear end of the fragrance rod; wherein, The method for manufacturing the fragrance stick includes: The process of forming a fragrance rod by bundling multiple thin rods containing an aerosol-generating substrate by winding them together with inner winding paper and then winding them together with outer winding paper; and The process of connecting the mouthpiece portion, which is arranged in series with the flavor rod, and then integrally winding them together with a splicing paper.

10. The method for manufacturing a fragrance stick as described in claim 9, wherein, The process of forming the fragrance rod includes: In the long strip thin roll forming process, a fragrance source containing an aerosol generating substrate is continuously wound in the long strip direction by a long strip of thin roll wrapping paper, thereby forming multiple long strip thin rolls side by side in the conveying direction of the rolling machine. In the process of forming a long fragrance stick, the multiple long thin coils are brought together while being wound together integrally with outer wrapping paper, thereby forming a long fragrance stick; and The cutting process involves cutting the long fragrance stick into a specified length to form the fragrance stick.

11. The method for manufacturing a fragrance stick as described in claim 9, wherein, The process of forming the fragrance rod includes: In the long flavor stick forming process, a double-length first component having twice the length of a first component constituting part of the mouthpiece is supplied at predetermined intervals to a long sheet-shaped outer winding paper being conveyed on the conveying path of the winding machine. After a plurality of double-length thin coils having twice the length of the thin coils are supplied in a bundle manner to the rod placement space formed between the double-length first components, the double-length first components and the bundle of double-length thin coils arranged in series therewith are wound together by the long outer winding paper, thereby forming a long flavor stick. as well as In the cutting process, the long fragrance rod is cut at the center of the length direction of the double-length first component and at the center of the length direction of the double-length thin coil rod, thereby forming an intermediate assembly connecting the first component and the fragrance rod. In the connecting process, with one or more second components constituting part of the mouthpiece portion connected in series with the first component in the intermediate assembly, the intermediate assembly and the one or more second components are integrally wound together by splicing paper.

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