WO2023021565A1

WO2023021565A1 - Flavor stick and non-combustible flavor suction system

Info

Publication number: WO2023021565A1
Application number: PCT/JP2021/029942
Authority: WO
Inventors: 貴文泉屋; 吉高松本
Original assignee: 日本たばこ産業株式会社
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2023-02-23

Abstract

A flavor stick that is removably housed in a heating chamber for a non-combustible flavor suction device and is heated by induction as a result of changes in magnetic flux generated by an induction coil provided around the heating chamber. The flavor stick comprises a rod section that includes: a flavor source; an aerosol-generating base material; and a heating body that is heated by an induction current caused by the changes in magnetic flux and heats the flavor source and the aerosol generating base material. The heating body: is sheet-shaped; is wound around a virtual axis that follows the insertion/removal direction when the rod section is inserted into or removed from the heating chamber; and is formed in a spiral shape, in a cross-section orthogonal to the virtual axis.

Description

Flavor stick and non-combustion flavor suction system

The present invention relates to flavor sticks and non-combustion flavor suction systems.

A non-combustion type flavor suction system has been proposed as an alternative to the conventional combustion type cigarette that smokes by burning tobacco leaves. For example, an electrically heated device having a heater assembly, a battery unit that powers the heater assembly, a controller that controls the heating element of the heater assembly, etc., and a non-combustion heated tobacco stick used with the electrically heated device. Non-combustion heated tobacco products are known comprising: Non-combustion heated tobacco sticks are, for example, tobacco fillers (e.g., tobacco cuts, tobacco granules, tobacco sheet moldings, etc.) and tobacco fillers containing aerosol-generating sources (glycerin, propylene glycol, etc.) and the tobacco fillers. It comprises a tobacco rod portion having wrapping paper around which an object is wrapped, and a mouthpiece portion coaxially connected to the tobacco rod portion by being wrapped with tipping paper together with the tobacco rod portion.

Patent Document 1 proposes an apparatus for generating an inhalable aerosol by heating an aerosol-forming substrate containing tobacco by heating a heating element with an alternating magnetic field generated by an induction coil.

Japanese Patent Publication No. 2020-529858 U.S. Patent Application Publication No. 2021/0015148 Japanese Patent Application Laid-Open No. 2021-19640

In the electromagnetic heating method, in which a heating element (heating element) is heated by an alternating magnetic field generated by an induction coil to heat the flavor sticks, the heating element is made of a material with high magnetic permeability such as iron. If the heating element is made of a material having a low magnetic permeability, such as aluminum, the eddy current generated by the alternating magnetic field is reduced, resulting in a decrease in heat generation efficiency. For this reason, aluminum or the like cannot be used as the material of the heating element, and the degree of freedom in design has been limited.

The present invention has been made in view of the above-described circumstances, and its purpose is to provide a technique for efficiently generating heat from a heating body.

The technology according to the present invention is
A flavor stick that is removably housed in a heating chamber of a non-combustion type flavor inhaling device and that is induction-heated by a change in magnetic flux generated by an induction coil provided around the heating chamber,
a rod portion including a flavor source, an aerosol-generating substrate, and a heating element that is heated by an induced current due to a change in the magnetic flux and heats the flavor source and the aerosol-generating substrate;
The heating element is in the form of a sheet, is wound around an imaginary axis along the insertion/extraction direction when the rod part is inserted into/extracted from the heating chamber, and spirals in a cross section perpendicular to the imaginary axis. Been formed.

In the flavor stick, the rod portion may be inserted into and removed from the heating chamber with the insertion and removal direction as a longitudinal direction, and the induction coil may be configured to generate magnetic flux in a direction orthogonal to the insertion and removal direction.

In the flavor stick, the mixture containing the flavor source and the aerosol-generating base material may be adhered to the surface of the heating body.

In the flavor stick, the heating element may have a magnetic permeability of less than 1×10 ⁻³ .

In the flavor stick, the heating element has a ratio of a first dimension in a first direction to a second dimension in a second direction orthogonal to the first direction, when the first dimension is 1.0, The second dimension may be set to be 0.25-1.0.

In addition, the technology according to the present invention is
A non-combustion type flavor inhalation system comprising the flavor stick and a non-combustion type flavor inhalation device that heats the flavor stick by an induction heating method,
The non-combustion type flavor inhalation device,
a heating chamber that removably accommodates the flavor stick;
an induction coil disposed around the heating chamber and generating a magnetic flux in a direction orthogonal to the insertion/extraction direction for the flavor stick inserted into the heating chamber to induction-heat the heating body.

In the non-combustion flavor inhalation system, the heating chamber extends along the direction of insertion and removal of the flavor stick,
The induction coil may comprise a conducting wire spirally wound along the outer peripheral surface of the heating chamber around a virtual axis orthogonal to the extending direction of the heating chamber.

Further, the non-combustion type flavor inhalation device according to the present invention is
a heating chamber removably housing a flavor stick having a flavor source and an aerosol-generating substrate and extending along an insertion/removal direction;
an induction coil that is arranged around the heating chamber and generates a magnetic flux in a direction perpendicular to the extending direction of the heating chamber to induction-heat a heating body arranged in the flavor stick or in the heating chamber;
with
The induction coil comprises a conducting wire spirally wound along the outer peripheral surface of the heating chamber around a virtual axis perpendicular to the extending direction of the heating chamber,
The one-turn section of the spirally wound conductor is
a long side extending linearly along the extending direction of the heating chamber;
a short side portion extending along the outer periphery of the heating chamber and shorter than the long side portion;
including.

In the non-combustion type flavor inhalation device, the long side portion includes a first long side portion and a second long side portion that extend linearly along the extending direction of the heating chamber and are spaced apart from each other. including
The short sides may include a first short side and a second short side that extend along the perimeter of the heating chamber and are spaced apart.

In the non-combustion type flavor inhalation device, the first long side portion, the first short side portion, the second long side portion, and the second short side portion are sequentially connected to form a single turn of the conductor wire. Intervals may be formed.

In the non-combustion type flavor inhalation device, the conducting wire may have a spiral shape by sequentially connecting a plurality of the single winding sections.

In the non-combustion type flavor inhalation device, the first long side portion and the second long side portion included in the plurality of one-turn sections are arranged along the outer circumference of the heating chamber, and the plurality of the A region in the heating chamber surrounded by the first long side portion and the second long side portion included in the one-turn section may be an induction heating region, and the heating body may be arranged in the induction heating region. .

In the non-combustion type flavor inhaling device, the flavor stick has a heating body, and when the flavor stick is inserted into the heating chamber in a prescribed state, the heating body in the flavor stick is heated by the induction heating. may be located within the area.

The non-combustion type flavor inhalation system according to the present invention includes:
the non-combustion type flavor inhaling device;
a flavor stick that is removably housed in the heating chamber of the non-combustion type flavor inhaling device and that is induction-heated by changes in the magnetic flux generated by the induction coil provided around the heating chamber; prepared,
The flavor stick is
a rod portion including the flavor source, the aerosol-generating substrate, and a heating element that is heated by an induced current due to a change in the magnetic flux to heat the flavor source and the aerosol-generating substrate;
The heating body has a plate-like or sheet-like shape, and has a flat surface on at least a part of its surface. The flat surface is arranged so as to be substantially orthogonal to the magnetic flux, and the width dimension of the flat surface in the direction orthogonal to the magnetic flux is set larger than the thickness dimension of the heating body in the direction parallel to the magnetic flux.

In the non-combustion type flavor inhaling system, a plurality of plate-shaped heating bodies may be arranged in the rod portion, and the flat surfaces of the heating bodies may be aligned in the same direction.

In the non-combustion type flavor inhalation system, a mixture containing the flavor source and the aerosol-generating base material may adhere to the surface of the heating body.

In the non-combustion type flavor inhalation system, the heating element may have a magnetic permeability of less than 1×10 ⁻³ .

It should be noted that the means for solving the problems in the present invention can be employed in combination as much as possible.

According to the present invention, it is possible to provide a technique for efficiently generating heat from a heating body.

1 is a schematic configuration diagram of a non-combustion type flavor inhalation system according to an embodiment; FIG. 1 is a perspective view of a tobacco stick according to an embodiment; FIG. FIG. 4 is a diagram illustrating the internal structure of the tobacco stick according to the embodiment; Fig. 4(A) is a front view, Fig. 4(B) is a plan view, and Fig. 4(C) is a side view showing a susceptor carrying a tobacco filler. FIG. 4 is a diagram showing a tip surface of a tobacco stick; 4A and 4B are diagrams showing the configuration of the susceptor and the procedure for forming the susceptor in a spiral shape; FIG. FIG. 3 is a diagram showing the configuration of a non-combustion type flavor inhalation device. It is a figure explaining the structure of a coil. It is a figure which shows the end surface at the time of longitudinally cutting a coil in the center of the depth direction (Z direction). As a comparative example, it is a schematic configuration diagram of a non-combustion type flavor inhalation device that generates a magnetic flux in the axial direction of a tobacco rod. Fig. 2 is a perspective view of a coil provided in the non-combustion type flavor inhaling device; FIG. 5 is a diagram showing the relationship between the magnetic flux and the susceptor when a tobacco stick is inserted into the non-combustion type flavor inhaling device of the comparative example. FIG. 4 is a diagram showing the relationship between the magnetic flux and the susceptor when a tobacco stick is inserted into the non-combustion type flavor inhaling device according to the embodiment; FIG. 10 is a diagram showing a modified example of a tobacco stick;

Here, embodiments of the flavor stick and the non-combustion type flavor suction system according to the present invention will be described based on the drawings. Note that the dimensions, materials, shapes, relative positions, etc. of the components described in this embodiment are examples. For example, in the present embodiment, a flavor stick containing tobacco filling as a flavor source (hereinafter also referred to as a "tobacco stick") will be described as an example of a flavor stick. It may contain a flavor component of.

<First Embodiment>
FIG. 1 is a schematic configuration diagram of a non-combustion type flavor inhalation system 200 according to an embodiment. FIG. 2 is a perspective view of the tobacco stick 100 according to the embodiment, and FIG. 3 is a diagram explaining the internal structure of the tobacco stick 100 according to the embodiment. 1 to 3, the horizontal direction is shown as the X direction, the vertical direction as the Y direction, and the depth direction as the Z direction. The same applies to subsequent figures. These directions are merely examples for convenience of explanation, and do not limit each element of the non-combustion type flavor inhalation system 200 . For example, each element of the non-combustion type flavor inhalation system 200 is not limited to being arranged in the direction shown in the drawing.

The non-combustion type flavor inhalation system 200 includes a tobacco stick 100 and a non-combustion type flavor inhalation device 30 that heats the tobacco rod portion 110 of the tobacco stick 100 by an induction heating method. The tobacco stick 100 is accommodated in the heating chamber 35 through the insertion opening 3A of the non-burning flavor inhaling device 30 so as to be freely insertable and removable. The tobacco stick 100 of the present embodiment has a tobacco filler, which is a flavor source, and a susceptor (heating body) for heating the tobacco filler in the tobacco rod portion 110 .

When the non-combustion type flavor inhalation device 30 is used by the user, the tobacco stick 100 is inserted into the heating chamber 35, and in this state magnetic flux is generated in a predetermined direction with respect to the tobacco rod portion 110 of the tobacco stick 100. to generate an alternating magnetic field. The change in the magnetic flux of the alternating magnetic field causes the non-combustion type flavor inhalation device 30 to heat the susceptor in the tobacco rod portion 110, thereby heating the tobacco filling, thereby generating an aerosol containing tobacco components, which is used by the user. Subject to aspiration.

[cigarette stick]
The tobacco stick 100 according to this embodiment is in the form of a substantially cylindrical rod. In the example shown in FIGS. 2 and 3, the tobacco stick 100 includes a tobacco rod portion 110, a mouthpiece portion 120, and tipping paper 130 connecting them together. Mouthpiece portion 120 is coaxially connected to tobacco rod portion 110 by being wrapped with tip paper 130 together with tobacco rod portion 110 .

Reference numeral 101 is the mouthpiece end of the tobacco stick 100 (mouthpiece portion 120). Reference numeral 102 is the tip of the tobacco stick 100 opposite to the mouthpiece end 101 . The tobacco rod portion 110 is arranged on the tip 102 side of the tobacco stick 100 . In the example shown in FIGS. 2 and 3, the tobacco stick 100 has a substantially constant diameter along the entire longitudinal direction (hereinafter also referred to as the axial direction or Z direction) from the mouth end 101 to the tip 102. there is

[Tip paper]
The material of the tip paper 130 is not particularly limited, and may be paper made of general plant fibers (pulp), sheets using polymer-based chemical fibers (polypropylene, polyethylene, nylon, etc.), polymer-based A sheet, a metal foil, etc., or a composite material combining these can be used. For example, the tipping paper 130 may be made of a composite material in which a polymer sheet is attached to a paper substrate. Note that the tipping paper 130 here means a sheet-like material that connects a plurality of segments of the tobacco stick 100, such as connecting the tobacco rod portion 110 and the mouthpiece portion 120, for example.

Although the basis weight of the tipping paper 130 is not particularly limited, it is usually 32 gsm or more and 40 gsm or less, preferably 33 gsm or more and 39 gsm or less, and more preferably 34 gsm or more and 38 gsm or less. Although the air permeability of the tipping paper 130 is not particularly limited, it is generally 0 Coresta unit or more and 30000 Coresta unit or less, preferably more than 0 Coresta unit and 10000 Coresta unit or less. Air permeability is a value measured in accordance with ISO 2965:2009, and is expressed as the flow rate (cm ³ ) of gas passing through an area of 1 cm ² per minute when the pressure difference between both sides of the paper is 1 kPa. be done. One Coresta unit (1 Coresta unit, 1 CU) is cm ³ /(min·cm ² ) under 1 kPa.

The tip paper 130 may contain fillers other than the above pulp, such as metal carbonates such as calcium carbonate and magnesium carbonate, metal oxides such as titanium oxide, titanium dioxide and aluminum oxide, barium sulfate, metal sulfates such as calcium sulfate, metal sulfides such as zinc sulfide, quartz, kaolin, talc, diatomaceous earth, gypsum, etc.; preferably contains These fillers may be used singly or in combination of two or more.

The chipping paper 130 may be added with various auxiliary agents in addition to the pulp and filler described above. For example, it may contain a water resistance improver to improve water resistance. Water resistance improvers include wet strength agents (WS agents) and sizing agents. Examples of wet strength agents include urea formaldehyde resins, melamine formaldehyde resins, polyamide epichlorohydrin (PAE), and the like. Examples of sizing agents include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohol having a degree of saponification of 90% or more.

A coating agent may be added to at least one of the front and back sides of the tip paper 130 . The coating agent is not particularly limited, but a coating agent capable of forming a film on the paper surface and reducing liquid permeability is preferred.

The manufacturing method of the chip paper 130 is not particularly limited, and a general method can be applied. In the papermaking process using a circular and short-circle multi-purpose paper machine, etc., there is a method of adjusting the texture and making it uniform. If necessary, a wet strength agent may be added to impart water resistance to the wrapping paper, or a sizing agent may be added to adjust the printing quality of the wrapping paper.

[Tobacco rod part]
Tobacco rod portion 110 can be obtained by wrapping tobacco filler 111 containing tobacco filler (flavor source) and aerosol-generating base material, and susceptor 117 with wrapping paper 112 . Although the tobacco rod portion 110 of the present embodiment has a columnar shape, it is not limited to this, and may have a square columnar shape or an elliptical columnar shape.

4A and 4B are views showing the susceptor 117 carrying the tobacco filling 111, with FIG. 4(A) being a front view, FIG. 4(B) being a plan view, and FIG. 4(C) being a side view. 4A and 4B are views showing the susceptor 117 carrying the tobacco filler 111. FIG. 4A is a front view, FIG. 4B is a plan view, and FIG. 4C is a side view.

The susceptor 117 is a sheet-like member that is wound around a virtual winding axis (virtual axis) along the insertion/extraction direction (Z direction) when the tobacco rod portion 100 is inserted into/extracted from the heating chamber 35 . , a cross section orthogonal to the winding axis (hereinafter also referred to as an XY cross section) and a front shape are formed in a spiral shape. That is, the susceptor 117 has a spiral end on the front or back, and the spiral end extends in the insertion/removal direction. The outer shape of the susceptor 117 is substantially cylindrical, and the length LA in the insertion/removal direction (axial direction) is longer than the width W0 in the radial direction.

FIG. 5 is a diagram showing a portion of the tobacco filler 111 and the susceptor 117 in a cross section perpendicular to the insertion/extraction direction of the tobacco rod portion 110. As shown in FIG. The susceptor 117 is provided so that a sheet-like winding portion 170 is wound around its axis a plurality of times. Therefore, the winding portion 170 of the susceptor 117 is arranged so as to be laminated in the radial direction of the tobacco rod portion 110 . Tobacco filler 111 is fixed to inner peripheral surface 171 of winding portion 170 . Alternatively, the tobacco filling 111 may be fixed to the outer peripheral surface 172 of the encircling portion 170 , or may be fixed to both the inner peripheral surface 171 and the outer peripheral surface 172 . The tobacco filler 111 is, for example, pulverized dried tobacco leaves (tobacco filler) to have an average particle size of 20 μm or more and 200 μm or less, which is mixed with water, a binder, or the like together with the aerosol-generating base material. It is suspended in the liquid of the susceptor 117 to form a slurry, which is applied to the inner peripheral surface 171 of the susceptor 117 and dried to adhere to the inner peripheral surface 171 .

The material of the susceptor 117 is, for example, metal, and specific examples include aluminum, iron, iron alloys, stainless steel, nickel, nickel alloys, or a combination of two or more of these. Other than metal, for example, carbon can be used, but from the viewpoint of enabling good electromagnetic induction heating, metal is preferred. The susceptor 117 may be made of a material having a magnetic permeability of the heating element of 1×10 ⁻⁶ or more and less than 1×10 ⁻² , preferably 1.2×10 ⁻⁶ or more and less than 1×10 ⁻³ . The susceptor 117 of this embodiment is made of aluminum.

The thickness T0 of the susceptor 117 is, for example, 2 μm or more and 1000 μm or less, preferably 5 μm or more and 500 μm or less, and more preferably 10 μm or more and 200 μm or less.

FIG. 6 is a diagram showing the configuration of the susceptor 117 and the procedure for forming the susceptor 117 in a spiral shape. In FIG. 6, state A shows the state of the sheet before the susceptor 117 is spirally wound. Thus, the susceptor 117 has a rectangular planar shape before being spirally wound. In the example of FIG. 6 , the Z direction of the sheet is the insertion/removal direction (first direction) when the sheet is inserted into the tobacco rod portion 110 . Here, in the susceptor 117, the ratio of the length (first dimension) LA in the insertion/extraction direction to the width (second dimension) WA in the direction (second direction) perpendicular to the insertion/extraction direction is 1.1. When 0, the width WA may be set to be 0.5 to 1.0. By setting the ratio between the length LA and the width WA close to 1.0:1.0, that is, by making the shape close to a square, the susceptor 117 can be efficiently heated. The length LA of the susceptor 117 in the insertion/removal direction (axial direction) is, for example, 4 mm or more and 60 mm or less, and preferably equal to the axial length of the tobacco rod portion 110 . One end side 174 of this sheet or the vicinity of this end side 174 is used as a virtual winding shaft 175 , and the sheet on the side of the end side 174 is wound around the axis of the winding shaft 175 . State B shows from the front side a state in which winding has started on the edge 174 side.

The sheet on the side of the other end 176 is wound around the outer periphery of the winding portion 170 wound around the axis of the winding shaft 175 (state C), and by repeating this, the sheet is wound around the outer periphery up to the other end 176, and the outer shape is substantially cylindrical. (state D). Here, the width of the susceptor 117 in the direction orthogonal to the axial direction (the radial direction of the tobacco rod portion) is, for example, 5.5 mm or more and 8.0 mm or less, preferably 6.0 mm or more and 7.7 mm or less. , more preferably 6.5 mm or more and 7.2 mm or less

Then, the tobacco rod portion 110 is formed by inserting the substantially cylindrical susceptor 117 into the tube of the wrapping paper 112 through the end opening of the wrapping paper 112 (state E). Alternatively, the tobacco rod portion 110 may be formed by winding the wrapping paper 112 around the axis of the susceptor 117 having a substantially cylindrical shape.

As shown in FIG. 5, when the susceptor 117 formed in a spiral shape is packed into the tobacco rod portion 110 in a state in which the winding portions 170 of the susceptor 117 are stacked, the winding portions 170 adjacent in the radial direction Rather than being in complete close contact, the tobacco filling 111 carried on the inner peripheral surface 171 of the winding portion 170 is interposed between the adjacent winding portions 170, or the winding portion 170 has a slight distortion. A gap is created between adjacent winding portions 170, and ventilation is ensured by this gap. For example, the tobacco filling 111 has unevenness on its surface due to the drying process, and this unevenness creates a gap between adjacent winding portions 170 . In addition, since the winding portion 170 has a thickness T0 of, for example, several μm, slight distortion occurs in the process of applying, drying, and cutting the tobacco filler 111, and this distortion causes the adjacent susceptor 117 to be slightly deformed. There is a gap between

The airflow resistance of the tobacco rod portion 110 is, for example, 5 mmH ₂ O or more and 60 mmH ₂ O or less, preferably 10 mmH ₂ O or more and 40 mmH ₂ O or less, and more preferably 15 mmH ₂ O or more and 35 mmH ₂ O or less. . In addition, the packing density of the tobacco filler 111 and the susceptor 117 in the tobacco rod portion 110 may be normally 0.2 mg/mm ³ or more and 0.7 mg/mm ^{3 or} less based on the inner void volume of the tobacco rod portion 110. , 0.2 mg/mm ³ or more and 0.6 mg/mm ³ or less. Within such a range, for example, heat from the plate-shaped susceptor 117 can be sufficiently transferred to the filling 111, and unnecessary filtration of the flavor component can be suppressed during suction, resulting in favorable release. can be ensured.

Tobacco raw materials used for the tobacco filling 111 include leaves of tobacco plants of varieties selected from yellow varieties, burley varieties, orient varieties, native varieties, other Nicotiana-Tavacum varieties, Nicotiana-Rustica varieties, and the like; Sites such as leaf veins, stems, roots, and flowers can be mentioned. The water content of the tobacco filling 111 can be 10% by weight or more and 15% by weight or less, preferably 11% by weight or more and 13% by weight or less, based on the total weight of the tobacco filling 111 . Such a water content suppresses the occurrence of winding stains and improves the winding suitability of the tobacco rod portion 110 during manufacturing. There are no particular restrictions on the size of the shredded tobacco contained in the tobacco filling 111 and the preparation method thereof. For example, instead of fixing the tobacco filling 111 to the susceptor 117, dried tobacco leaves are cut into pieces having a width of 0.5 mm or more and 2.0 mm or less, which are adjusted separately from the susceptor 117, and the tobacco filling 111 is and a susceptor 117 may be packed into the tobacco rod portion 110 .

The tobacco filling 111 may contain an aerosol base that produces aerosol smoke. The type of the aerosol base is not particularly limited, and substances extracted from various natural products and/or constituents thereof can be selected depending on the application. Aerosol bases can include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof. The content of the aerosol base material in the tobacco filling 111 is not particularly limited, but from the viewpoint of sufficiently generating an aerosol and imparting a good flavor, it is usually 5% by weight or more with respect to the total amount of the tobacco filling. preferably 10% by weight or more, and usually 50% by weight or less, preferably 15% by weight or more and 25% by weight or less.

The tobacco filling 111 may contain flavoring. The type of flavor is not particularly limited, and from the viewpoint of imparting good flavor, acetoanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise oil. , apple juice, Peruvian balsam oil, beeswax absolute, benzaldehyde, benzoin resinoids, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil. , carob absolute, beta-carotene, carrot juice, L-carvone, beta-caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, cinnamyl alcohol, cinnamyl cinnamate, citronella Oil, DL-citronellol, clary sage extract, cocoa, coffee, cognac oil, coriander oil, cumin aldehyde, davana oil, δ-decalactone, γ-decalactone, decanoic acid, dill herb oil, 3,4-dimethyl-1,2 -cyclopentanedione, 4,5-dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 3,7-dimethyl-6-octenoic acid, 2,3-dimethylpyrazine, 2,5-dimethylpyrazine , 2,6-dimethylpyrazine, ethyl 2-methylbutyrate, ethyl acetate, ethyl butyrate, ethyl hexanoate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl octanoate, ethyl oleate , ethyl palmitate, ethyl phenylacetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin, ethyl vanillin glucoside, 2-ethyl-3, (5 or 6)-dimethylpyrazine, 5-ethyl-3-hydroxy -4-methyl-2(5H)-furanone, 2-ethyl-3-methylpyrazine, eucalyptol, fenugreek absolute, gene absolute, gentian root infusion, geraniol, geranyl acetate, grape juice, guaiacol, guava extract, γ-heptalactone, γ-hexalactone, hexanoic acid, cis-3-hexen-1-ol, hexyl acetate, hexyl alcohol, hexyl phenylacetate, honey, 4-hydroxy-3-pentenoic acid lactone, 4-hydroxy-4 - (3-hi droxy-1-butenyl)-3,5,5-trimethyl-2-cyclohexen-1-one, 4-(para-hydroxyphenyl)-2-butanone, sodium 4-hydroxyundecanoate, inmolter absolute, β- Ionone, isoamyl acetate, isoamyl butyrate, isoamyl phenylacetate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute, cola nut tincture, labdanum oil, lemon terpene-less oil, licorice extract, linalool, linalyl acetate, lovage root oil, maltol, maple syrup, menthol, menthone, L-menthyl acetate, p-methoxybenzaldehyde, methyl-2-pyrrolyl ketone, methyl anthranilate, methyl phenylacetate, methyl salicylate, 4'-methylacetophenone, methylcyclopentenolone, 3-methylvaleric acid, Mimosa absolute, honey, myristic acid, nerol, nerolidol, γ-nonalactone, nutmeg oil, δ-octalactone, octanal, octanoic acid, orange flower oil, orange oil, orris root oil, palmitic acid, ω-pentadecalactone, Peppermint Oil, Petitgrain Paraguay Oil, Phenethyl Alcohol, Phenethyl Phenylacetate, Phenylacetic Acid, Piperonal, Plum Extract, Propenylguaethol, Propyl Acetate, 3-Propylidenephthalide, Prunes Juice, Pyruvic Acid, Raisin Extract, Rose. Oil, rum, sage oil, sandalwood oil, spearmint oil, styrax absolute, marigold oil, tea distillate, α-terpineol, terpinyl acetate, 5,6,7,8-tetrahydroquinoxaline, 1,5,5 ,9-tetramethyl-13-oxacyclo(8.3.0.0(4.9))tridecane, 2,3,5,6-tetramethylpyrazine, thyme oil, tomato extract, 2-tridecanone, citric acid triethyl, 4-(2,6,6-trimethyl-1-cyclohexenyl)2-buten-4-one, 2,6,6-trimethyl-2-cyclohexene-1,4-dione, 4-(2,6 ,6-trimethyl-1,3-cyclohexadienyl)2-buten-4-one, 2,3,5-trimethylpyrazine, γ-undecalactone, γ-valerolactone, vanilla extract, vanillin, veratraldehyde , violet leaf absolute, N-ethyl-p-men Tan-3-carbamide (WS-3), ethyl-2-(p-menthane-3-carboxamide) acetate (WS-5), and menthol is particularly preferred. Moreover, these fragrance|flavors may be used individually by 1 type, or may use 2 or more types together.

The content of the flavoring agent in the tobacco filling 111 is not particularly limited, and is generally 10,000 ppm or more, preferably 20,000 ppm or more, more preferably 25,000 ppm or more, from the viewpoint of imparting good flavor. It is 70000 ppm or less, preferably 50000 ppm or less, more preferably 40000 ppm or less, still more preferably 33000 ppm or less.

[rolling paper]
The wrapping paper 112 is a sheet material for wrapping the tobacco filler 111, and its structure is not particularly limited, and a general one can be used. For example, the base paper used for the wrapping paper 112 may be cellulose fiber paper, more specifically hemp or wood or a mixture thereof. The basis weight of the base paper in the wrapping paper 112 is, for example, usually 20 gsm or more, preferably 25 gsm or more. On the other hand, the basis weight is usually 65 gsm or less, preferably 50 gsm or less, more preferably 45 gsm or less. The thickness of the wrapping paper 112 having the above properties is not particularly limited, and is usually 10 μm or more, preferably 20 μm or more, and more preferably 30 μm, from the viewpoint of rigidity, air permeability, and ease of adjustment during paper production. In addition, it is usually 100 μm or less, preferably 75 μm or less, and more preferably 50 μm or less.

The shape of the wrapping paper 112 of the tobacco rod portion 110 (tobacco filler 111) can be square or rectangular. When used as the wrapping paper 112 for wrapping the tobacco filling 111 (for producing the tobacco rod portion 110), the length of one side can be about 6 mm to 70 mm, and the length of the other side is about 15 mm to 15 mm. 28 mm, and a preferable length of the other side is 22 mm to 24 mm, and a more preferable length is about 23 mm.

In addition to the above pulp, the wrapping paper 112 may contain a filler. The content of the filler can be 10% by weight or more and less than 60% by weight, preferably 15% by weight or more and 45% by weight or less, based on the total weight of the wrapping paper 112 . In the wrapping paper 112, the filler is preferably 15% by weight or more and 45% by weight or less in a preferable basis weight range (25 gsm or more and 45 gsm or less). Furthermore, when the basis weight is 25 gsm or more and 35 gsm or less, the filler content is preferably 15% or more and 45% or less by weight, and when the basis weight is more than 35 gsm and 45 gsm or less, the filler content is preferably 25% or more and 45% by weight. % or less. As a filler, calcium carbonate, titanium dioxide, kaolin, and the like can be used, but from the viewpoint of enhancing flavor and whiteness, it is preferable to use calcium carbonate.

Various auxiliary agents other than base paper and fillers may be added to the wrapping paper 112. For example, a water resistance improver can be added to improve water resistance. Water resistance improvers include wet strength agents (WS agents) and sizing agents. Examples of wet strength agents include urea formaldehyde resins, melamine formaldehyde resins, polyamide epichlorohydrin (PAE), and the like. Examples of sizing agents include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohol having a degree of saponification of 90% or more. As an auxiliary agent, a paper strength agent may be added, and examples thereof include polyacrylamide, cationic starch, oxidized starch, CMC, polyamide epichlorohydrin resin, polyvinyl alcohol, and the like. In particular, it is known that the use of an extremely small amount of oxidized starch improves air permeability (for example, JP-A-2017-218699). Moreover, the wrapping paper 112 may be appropriately coated.

A coating agent may be added to at least one of the front and back sides of the wrapping paper 112 . The coating agent is not particularly limited, but a coating agent capable of forming a film on the paper surface and reducing liquid permeability is preferred. For example, alginic acid and its salts (e.g. sodium salts), polysaccharides such as pectin, cellulose derivatives such as ethyl cellulose, methyl cellulose, carboxymethyl cellulose, nitrocellulose, starch and derivatives thereof (e.g. carboxymethyl starch, hydroxyalkyl starch and cationic starch). ether derivatives such as starch acetate, starch phosphate and ester derivatives such as starch octenylsuccinate).

The axial length of the tobacco rod portion 110 can be appropriately changed according to the size of the product. is more preferably 70 mm or less, preferably 50 mm or less, more preferably 30 mm or less, and even more preferably 25 mm or less.

<Mouthpiece part>
The configuration of the tobacco stick 100 is not particularly limited, and can be of a general form. In the embodiment shown in FIG. 1, mouthpiece portion 120 includes two segments: cooling segment 121 and filtering segment 122 . The cooling segment 121 is arranged so as to be sandwiched between the tobacco rod portion 110 and the filter segment 122 while being in contact with them. Alternatively, gaps may be formed between the tobacco rod portion 110 and the cooling segment 121 and between the tobacco rod portion 110 and the filter segment 122 . Alternatively, mouthpiece portion 120 may be formed from a single segment.

[Cooling segment]
The structure of the cooling segment 121 is not particularly limited as long as it has a function of cooling mainstream tobacco smoke. In this case, the inside of the cylinder is a cavity, and the vapor containing the aerosol-generating substrate and the tobacco flavor component contacts the air in the cavity and is cooled.

As one aspect of the cooling segment 121, it may be a paper tube formed by processing a single sheet of paper or a paper obtained by pasting a plurality of sheets of paper into a cylindrical shape. In addition, it is preferable that there are holes for introducing the outside air around the paper tube in order to bring the room temperature outside air into contact with the high temperature steam to increase the cooling effect. The cooling segment 121 is provided with vent holes 103, which are openings for taking in air from the outside. The number of vent holes 103 in cooling segment 121 is not particularly limited. In this embodiment, a plurality of ventilation holes 103 are arranged at regular intervals in the circumferential direction of the cooling segment 121 . Also, the group of vent holes 103 arranged in the circumferential direction of the cooling segment 121 may be formed in multiple stages along the axial direction of the cooling segment 121 . By providing the cooling segment 121 with the ventilation hole 103, low-temperature air flows into the cooling segment 121 from the outside when the tobacco stick 100 is sucked, and the temperature of the volatile components and the air flowing in from the tobacco rod portion 110 is lowered. be able to. Also, the vapor containing the aerosol-generating substrate and the tobacco flavoring component is condensed by being cooled by cold air introduced into cooling segment 121 through vent 103 . This facilitates the generation of aerosol and allows the size of the aerosol particles to be controlled. In addition, by coating the inner surface of the paper tube with a polymer such as polyvinyl alcohol or a polysaccharide coating such as pectin, the cooling effect can be increased by utilizing the heat absorption of the coating and the heat of dissolution accompanying the phase change. can. The ventilation resistance of this cylindrical cooling segment is zero _mmH2O .

When the cooling segment 121 is filled with a sheet or the like for cooling volatile components and air flowing into the cooling segment 121 from the tobacco rod portion 110, the total surface area of the cooling segment 121 is not particularly limited, for example, 300 mm ² /mm. Above, ^1000mm2 /mm or less can be mentioned. This surface area is the surface area per length (mm) of the cooling segment 121 in the ventilation direction. The total surface area of the cooling segment 121 is preferably 400 mm ² /mm or more, more preferably 450 mm ² /mm or more, while preferably 600 mm ² /mm or less, and preferably 550 mm ² /mm or less. It is more preferable to have

The cooling segment 121 desirably has a large total surface area in its internal structure. Thus, in a preferred embodiment, cooling segment 121 may be formed by a thin sheet of material that is crumpled to form channels and then pleated, gathered and folded. The more folds or folds in a given volume of element, the greater the total surface area of cooling segment 121 . The thickness of the constituent material of the cooling segment 121 is not particularly limited, and may be, for example, 5 μm or more and 500 μm or less, or 10 μm or more and 250 μm or less.

It is also desirable to use paper as a material for the cooling sheet member from the viewpoint of reducing the environmental load. Paper as a material for the cooling sheet preferably has a basis weight of 30 to 100 g/m ² and a thickness of 20 to 100 μm. From the viewpoint of reducing the removal of the flavor source component and the aerosol base component in the cooling segment, the air permeability of the paper used as the material for the cooling sheet is desirably low, and the air permeability is preferably 10 Coresta or less. By applying polymer porting such as polyvinyl alcohol or polysaccharide coating such as pectin to paper as a material for the cooling sheet, the cooling effect is increased by utilizing the heat absorption and the heat of dissolution accompanying the phase change of the coating. can also

The vent hole 103 in the cooling segment 121 is preferably arranged at a position separated by 4 mm or more from the boundary between the cooling segment 121 and the filter segment 122 . This not only improves the cooling capacity of the cooling segment 121, but also suppresses the retention of the component generated by heating within the cooling segment 121, thereby improving the delivery amount of the component. It is preferable that the tip paper 130 is provided with an opening at a position directly above (overlapping position) the vent hole 103 provided in the cooling segment 121 . The openings of the cooling segment 121 are the ratio of air inflow from the openings when the automatic smoking machine sucks at 17.5 ml / sec (the ratio of the air sucked from the mouth end is 100% by volume. The volume ratio of the inflowing air) is preferably 10 to 90% by volume, preferably 50 to 80% by volume, more preferably 55 to 75% by volume. The number of Vs can be selected from the range of 5 to 50, the diameter of the apertures V can be selected from the range of 0.1 to 0.5 mm, and a combination of these selections can be achieved. The above-mentioned air inflow rate can be measured by a method based on ISO9512 using an automatic smoking machine (for example, a single bottle automatic smoking machine manufactured by Borgwaldt). The length of the cooling segment 121 in the axial direction (ventilation direction) is not particularly limited, but is usually 10 mm or more, preferably 15 mm or more, and usually 40 mm or less, preferably 35 mm or less, and 30 mm. The following are more preferable. A particularly preferred axial length of the cooling segment 121 is 20 mm. By setting the length of the cooling segment 121 in the axial direction to the above lower limit or more, a sufficient cooling effect can be secured and a good flavor can be obtained. Further, by setting the axial length of the cooling segment 121 to the above upper limit or less, it is possible to suppress losses caused by adhesion of steam and aerosol generated during use to the inner wall of the cooling segment 121 .

[Filter segment]
The configuration of the filter segment 122 is not particularly limited as long as it functions as a general filter. The single filament fineness and total fineness of the cellulose acetate tow are not particularly limited, but when the circumference of the filter segment 122 is 22 mm, the single filament fineness is preferably 5 to 20 g/9000 m, and the total fineness is preferably 12000 to 30000 g/9000 m. The cross-sectional shape of the fibers of the cellulose acetate tow may be a Y cross section or an R cross section. When cellulose acetate tow is filled to form the filter segment 122, triacetin may be added in an amount of 5 to 10% by weight based on the weight of the cellulose acetate tow in order to improve the hardness of the filter. Although the filter segment 122 is composed of a single segment in the example shown in FIG. 2, the filter segment 122 may be composed of a plurality of segments. When the filter segment 122 is composed of a plurality of segments, for example, a hollow segment such as a center hole is arranged on the upstream side (tobacco rod portion 110 side), and a segment on the downstream side (mouthpiece end 101 side) has a mouthpiece section made of cellulose. Mention may be made of the arrangement of acetate filters filled with acetate tow. According to such an aspect, unnecessary loss of generated aerosol can be prevented, and the appearance of the tobacco stick 100 can be improved. In addition, from the viewpoint of change in sensation of sucking response and comfort in the mouth, an acetate filter is arranged on the upstream side (tobacco rod portion 110 side), and a hollow segment such as a center hole is arranged on the downstream side (mouthpiece end 101 side). A mode of doing so is also acceptable. Also, the filter segment 122 may be configured using other alternative filter materials, such as a paper filter filled with sheet-like pulp paper, instead of the acetate filter.

General functions of the filter in the filter segment 122 include, for example, adjustment of the amount of air mixed when inhaling aerosol, etc., reduction of flavor, reduction of nicotine and tar, etc. All of these functions are provided. It is not necessary to have In addition, compared to cigarette products, electrically heated tobacco products, which tend to produce less components and have a lower filling rate of tobacco fillers, suppress the filtering function while preventing the tobacco fillers from falling. Prevention is also one of the important functions.

The cross-sectional shape of the filter segment 122 is substantially circular, and the diameter of the circle can be changed as appropriate according to the size of the product. , 8.5 mm or less, and more preferably 5.0 mm or more and 8.0 mm or less. If the cross section is not circular, the diameter of the circle is applied assuming a circle having the same area as the cross section. The peripheral length of the filter segment 122 can be appropriately changed according to the size of the product. It is more preferably 0 mm or more and 25.0 mm or less. The axial length of the filter segment 122 can be appropriately changed according to the size of the product, but is usually 5 mm or more and 35 mm or less, preferably 10.0 mm or more and 30.0 mm or less. The shape and dimensions of the filter medium can be appropriately adjusted so that the shape and dimensions of the filter segment 122 are within the above ranges.

The ventilation resistance per 120 mm of axial length of the filter segment 122 is not particularly limited, but is usually 40 mmH ₂ O or more and 300 mmH ₂ O or less, preferably 70 mmH ₂ O or more and 280 mmH ₂ O or less, and 90 mmH 2 O or more. ₂ O or more and 260 mmH ₂ O or less is more preferable. The above airflow resistance is measured according to the ISO standard method (ISO6565) using, for example, a filter airflow resistance measuring instrument manufactured by Cerulean. The ventilation resistance of the filter segment 122 is such that a predetermined air flow rate (17.5 cc/cm) from one end surface (first end surface) to the other end surface (second end surface) in a state in which air does not permeate the side surfaces of the filter segment 122. min) indicates the air pressure difference between the first end surface and the second end surface when air is flowed. The unit of airflow resistance can generally be expressed in _mmH2O . It is known that the relationship between the ventilation resistance of the filter segment 122 and the length of the filter segment 122 is a proportional relationship in the length range (5 mm to 200 mm in length) that is normally implemented, and the length of the filter segment 122 is If it doubles, the ventilation resistance also doubles.

The density of the filter medium in the filter segment 122 is not particularly limited, but is usually 0.10 g/cm ³ or more and 0.25 g/cm ³ or less, and 0.11 g/cm ³ or more and 0.24 g/cm ³ . It is preferably 0.12 g/cm ³ or more and 0.23 g/cm ³ or less. The filter segment 122 may be provided with a paper roll (filter plug paper roll) around which a filter medium or the like is wound, from the viewpoint of improving strength and structural rigidity. Embodiments of the web are not particularly limited and may include one or more rows of adhesive-containing seams. The adhesive may comprise a hot melt adhesive, and the hot melt adhesive may comprise polyvinyl alcohol. Moreover, when the filter segment 122 consists of two or more segments, it is preferable to wind these two or more segments together. The material of the paper roll in the filter segment 122 is not particularly limited, and known materials can be used, and it may contain a filler such as calcium carbonate.

The thickness of the roll paper is not particularly limited, and is usually 20 µm or more and 140 µm or less, preferably 30 µm or more and 130 µm or less, and more preferably 30 µm or more and 120 µm or less. The basis weight of the web is not particularly limited, and is usually 20 gsm or more and 100 gsm or less, preferably 22 gsm or more and 95 gsm or less, and more preferably 23 gsm or more and 90 gsm or less. Further, the web may or may not be coated, but from the viewpoint of imparting functions other than strength and structural rigidity, it is preferably coated with a desired material.

When the filter segment 122 includes a center hole segment and a filter medium, the center hole segment and the filter medium may be connected by an outer plug wrapper (outer roll paper), for example. The outer plug wrapper can be, for example, a cylinder of paper. Further, the tobacco rod portion 110, the cooling segment 121, and the connected center hole segment and filter media may be connected by, for example, mouthpiece lining paper. These connections are made, for example, by applying paste such as vinyl acetate paste to the inner surface of the mouthpiece lining paper, inserting the tobacco rod portion 110, the cooling segment 121, and the already connected center hole segment and filter material, and winding them. can do. In addition, these may be divided into multiple times and connected with multiple lining papers.

The filter media of filter segment 122 may include a crushable additive release container (eg, capsule) with a crushable outer shell such as gelatin. The embodiment of the capsule (also called "excipient release container" in the technical field) is not particularly limited, and any known embodiment may be adopted. It can be a container. The shape of the capsule is not particularly limited, and may be, for example, an easily breakable capsule, and the shape is preferably spherical. The additive contained in the capsule may contain any of the additives described above, but it is particularly preferable to contain a flavoring agent and activated carbon. Additives may also include one or more materials to help filter smoke. Although the form of the additive is not particularly limited, it is usually liquid or solid. It should be noted that the use of capsules containing excipients is well known in the art. Destructible capsules and methods of making them are well known in the art.

Flavoring agents may be, for example, menthol, spearmint, peppermint, fenugreek, cloves, medium chain triglycerides (MCT), etc., or a combination thereof. The flavoring agent of this embodiment is menthol.

A perfume may be added to the filter material of the filter segment 122 . By adding flavor to the filter media, the amount of flavor delivered during use is increased compared to the prior art that adds flavor to the tobacco filling that constitutes the tobacco rod portion 110 . The degree of increase in perfume delivery is further increased depending on the position of the apertures provided in the cooling segment 121 . The method of adding the flavor to the filter medium is not particularly limited, and the flavor may be added so as to be dispersed substantially uniformly in the filter medium to which the flavor is to be added. As for the amount of perfume to be added, a mode in which it is added to a portion of 10 to 100% by volume of the filter medium can be mentioned. As for the method of addition, it may be added to the filter material in advance before the formation of the filter segment, or may be added after the formation of the filter segment. The type of flavor is not particularly limited, but the same flavor as that contained in the above-described tobacco filling 111 may be used.

Filter segment 122 includes a filter media, at least a portion of which may be loaded with activated carbon. The amount of activated carbon added to the filter material is 15.0 m ² /cm ² or more, 80 as a value of specific surface area of activated carbon × weight of activated carbon / cross-sectional area of the filter material in the direction perpendicular to the ventilation direction in one tobacco stick. 0 m ² /cm ² or less. For the sake of convenience, the above "specific surface area of activated carbon x weight of activated carbon/cross-sectional area of filter material perpendicular to ventilation direction" may be expressed as "surface area of activated carbon per unit cross-sectional area". The surface area of activated carbon per unit cross-sectional area can be calculated based on the specific surface area of activated carbon added to the filter medium of one tobacco stick, the weight of the added activated carbon, and the cross-sectional area of the filter medium. Since activated carbon is not uniformly dispersed in the filter medium to which it is added, it is necessary to satisfy the above range in all cross sections of the filter medium (cross sections perpendicular to the ventilation direction). not a requirement.

The surface area of the activated carbon per unit cross-sectional area is more preferably 17.0 m ² /cm ² or more, more preferably 35.0 m ² /cm ² or more. On the other hand, it is more preferably 77.0 m ² /cm ² or less, even more preferably 73.0 m ² /cm ² or less. The surface area of activated carbon per unit cross-sectional area can be adjusted, for example, by adjusting the specific surface area of activated carbon, the amount thereof added, and the cross-sectional area of the filter medium in the direction perpendicular to the airflow direction. The above calculation of the surface area of activated carbon per unit cross-sectional area is based on the filter medium to which activated carbon is added. When the filter segment 122 is composed of a plurality of filter media, the cross-sectional area and length of only the filter media to which activated carbon is added are used as references.

Examples of activated carbon include those made from wood, bamboo, coconut shells, walnut shells, coal, and the like. As the activated carbon, one having a BET specific surface area of 1100 m ² /g or more and 1600 m ^{2 /g or less, preferably 1200 m 2} ^/ g or more and 1500 m ² /g or less is used. more preferably 1250 m ² /g or more and 1380 m ² /g or less. The BET specific surface area can be determined by a nitrogen gas adsorption method (BET multipoint method). Further, as the activated carbon, those having a pore volume of 400 μL/g or more and 800 μL/g or less, more preferably 500 μL/g or more and 750 μL/g or less can be used, More preferably, one with a concentration of 600 μL/g or more and 700 μL/g or less can be used. The pore volume can be calculated from the maximum adsorption amount obtained using the nitrogen gas adsorption method. The amount of activated carbon added per unit length in the ventilation direction of the filter medium to which activated carbon is added is preferably 5 mg/cm or more and 50 mg/cm or less, and is preferably 8 mg/cm or more and 40 mg/cm or less. It is more preferably 10 mg/cm or more and 35 mg/cm or less. By setting the specific surface area of the activated carbon and the amount of the activated carbon to be added within the above ranges, the surface area of the activated carbon per unit cross-sectional area can be adjusted to a desired value.

Further, the activated carbon preferably has a cumulative 10 volume % particle diameter (particle diameter D10) of 250 μm or more and 1200 μm or less. In addition, the cumulative 50% by volume particle diameter (particle diameter D50) of the activated carbon particles is preferably 350 μm or more and 1500 μm or less. In addition, the particle diameters D10 and D50 can be measured by a laser diffraction scattering method. As an apparatus suitable for this measurement, there is a laser diffraction/scattering particle size distribution measuring apparatus "LA-950" manufactured by Horiba. Powder is poured into the cell of this device together with pure water, and the particle size is detected based on the light scattering information of the particles.
The measurement conditions for the above measuring device are as follows.
Measurement mode: Manual flow cell measurement Dispersion medium: Ion-exchanged water Dispersion method: Measured after 1 minute of ultrasonic irradiation Refractive index: 1.92-0.00 (sample refraction) / 1.33-0.00i (dispersion refractive index)
Number of measurements: 2 measurements with different samples

Also, the method of adding activated carbon to the filter media of the filter segments 122 is not particularly limited, and the activated carbon may be added so as to be dispersed substantially uniformly in the filter media to which the activated carbon is added.

Also, in the tobacco stick 100 configured as described above, part of the outer surface of the tipping paper 130 may be covered with a lip release material. The lip release material assists the user in holding the mouthpiece portion 120 of the tobacco stick 100 in the mouth so that the contact between the lips and the tipping paper 130 can be easily released without substantially sticking. means a material composed of Lip release materials may include, for example, ethyl cellulose, methyl cellulose, and the like. For example, the outer surface of the tipping paper 130 may be coated with a rip release material by applying an ethylcellulose-based or methylcellulose-based ink to the outer surface of the tipping paper 130 .

In this embodiment, the lip release material of the tipping paper 130 is arranged at least in a predetermined mouthpiece region that contacts the lips of the user when the mouthpiece part 120 is held by the user. More specifically, of the outer surface of the tipping paper 130, the lip release material placement region R1 (see FIG. 2) covered with the lip release material extends from the mouthpiece end 101 of the mouthpiece portion 120 to the vent hole 103. defined as the region located in between.

In addition, although the ventilation resistance in the long axis direction per tobacco stick 100 configured as described above is not particularly limited, it is usually 8 mmH ₂ O or more, and 10 mmH ₂ O or more from the viewpoint of ease of sucking. more preferably 12 mmH ₂ O or more, and usually 100 mmH ₂ O or less, preferably 80 mmH ₂ O or less, and more preferably 60 mmH ₂ O or less. The airflow resistance is measured according to the ISO standard method (ISO6565:2015) using, for example, a filter airflow resistance meter manufactured by Cerulean. The ventilation resistance is defined as air flow rate (17.5 cc/min) from one end surface (first end surface) to the other end surface (second end surface) in a state where air does not permeate the side surfaces of tobacco stick 100. refers to the pressure difference between the first end surface and the second end surface when Units are generally expressed in _mmH2O . It is known that the relationship between the airflow resistance and the tobacco stick 100 is proportional in the length range (5 mm to 200 mm in length) that is normally implemented, and if the length of the tobacco stick 100 is doubled, The ventilation resistance is also doubled.

The rod-shaped tobacco stick 100 preferably has a columnar shape that satisfies a shape with an aspect ratio of 1 or more defined below.
Aspect ratio = h/w
w is the width of the tip 102 of the tobacco stick 100, h is the length in the axial direction, and preferably h≧w. The cross-sectional shape of the tobacco stick 100 is not particularly limited, and may be polygonal, polygonal with rounded corners, circular, elliptical, or the like. The width w of the tobacco stick 100 is the diameter when the cross-sectional shape of the tobacco stick 100 is circular, the major axis when the cross-sectional shape is elliptical, and the diameter of the circumscribed circle or the major axis of the circumscribed ellipse when the tobacco stick 100 is polygonal or polygonal with rounded corners. be. The axial length h of the tobacco stick 100 is not particularly limited, and is, for example, usually 40 mm or more, preferably 45 mm or more, and more preferably 50 mm or more. Moreover, it is usually 100 mm or less, preferably 90 mm or less, and more preferably 80 mm or less. The width w of the tip 102 of the tobacco stick 100 is not particularly limited, and is usually 5 mm or more, preferably 5.5 mm or more. Moreover, it is usually 10 mm or less, preferably 9 mm or less, and more preferably 8 mm or less. The ratio of the length of the cooling segment 121 and the filter segment 122 to the length of the tobacco stick 100 (cooling segment:filter segment) is not particularly limited, but it is usually 0.00 from the viewpoint of the delivery amount of fragrance and appropriate aerosol temperature. 60-1.40: 0.60-1.40, 0.80-1.20: preferably 0.80-1.20, 0.85-1.15: 0.85-1 0.15, more preferably 0.90-1.10: 0.90-1.10, more preferably 0.95-1.05: 0.95-1.05 Especially preferred. By setting the length ratio of the cooling segment 121 and the filter segment 122 within the above range, the cooling effect, the effect of suppressing the loss due to the generated vapor and aerosol adhering to the inner wall of the cooling segment 121, and the filter air Good flavor and flavor intensity can be achieved by balancing the amount and flavor control functions.

<Non-combustion type flavor inhalation device>
Next, the non-burning flavor inhalation device 30 used with the tobacco stick 100 will be described. The non-burning flavor suction device 30 is a suction device for sucking the tobacco stick 100 , and is combined with the tobacco stick 100 to configure the non-burning flavor suction system 200 .

FIG. 7 is a diagram showing the configuration of the non-combustion type flavor inhaling device 30. FIG. The non-combustion type flavor inhalation device 30 includes a housing 31, a coil (induction coil) 32 for electromagnetic induction heating, a battery unit (power source) 33 that supplies operating power to the coil 32 to operate it, and the coil 32. and a control unit 34 for controlling the power supplied to. The housing 31 has a heating chamber 35 that is a cylindrical recess, and a coil 32 is arranged along the outer circumference of the heating chamber 35 .

The housing 31 has a generally cylindrical outer shape, and a heating chamber 35 is provided at the tip. The heating chamber 35 is a cylindrical space extending from the front end of the housing 31 toward the rear end. An opening of the heating chamber 35 on the front end side of the housing serves as an insertion opening 3A for the tobacco stick 100 . A tobacco stick 100 can be inserted into and removed from the heating chamber 35 through this insertion port 3A. That is, the heating chamber 35 extends along the insertion/removal direction of the tobacco stick 100 .

The housing 31 includes a cylindrical chamber-side peripheral wall 311 surrounding the outer periphery of the heating chamber 35 and a chamber rear wall 312 closing the rear end of the chamber-side peripheral wall 311 . defines the heating chamber 35 . An air flow path 36 penetrating from the heating chamber 35 to the outer peripheral surface 313 of the housing 31 is provided in a portion of the chamber-side peripheral wall 311 on the chamber rear wall 312 side.

The non-combustion type flavor inhalation device 30 may start the heating operation triggered by a start-up operation of an operation switch or the like arranged on the housing 31 . Also, the non-combustion type flavor inhalation device 30 may detect that the tobacco stick 100 has been inserted into the heating chamber 35, and use this as a trigger to start the heating operation. For example, the control unit 32 may include a sensor that detects insertion of the tobacco stick 100 into the heating chamber 35, and the detection of the insertion of the tobacco stick 100 by this sensor may be used as a trigger to start the heating operation. .

The battery unit 33 is a power supply that supplies electric power for heating to the coil 32 via the control unit 34, and supplies DC current to the control unit 34 in this embodiment. Control section 34 includes a DC/AC inverter for supplying high frequency AC current to coil 32 . When the control unit 34 detects that the operation switch is operated or that the tobacco stick 100 is inserted into the heating chamber 35, the control unit 34 determines that the start of the heating operation is instructed, and applies an AC current of a predetermined frequency to the coil. 32. For example, the control unit 34 may be configured to include a capacitor for resonance, and supply an AC current by resonating the capacitor and the coil (inductor) 32 . In this case, the frequency (resonance frequency) f ₀ of the AC current is determined by the capacitance C of the resonance capacitor and the inductance L of the coil 32 as f ₀ =1/(2π√(LC)). Thereby, the coil 32 generates a fluctuating electromagnetic field (alternating magnetic field) of the predetermined frequency. The frequency of the electromagnetic field is, for example, 1 kHz or more and 30 MHz or less, preferably 50 kHz or more and 500 kHz or less, more preferably 100 kHz or more and 250 kHz or less. In this embodiment, the inductance L of the coil is 1 μH and the frequency of the fluctuating electromagnetic field is 200 kHz.

Further, the control unit 32 includes a sensor for detecting the temperature inside the heating chamber 35 or the temperature of the tobacco rod portion 110, and adjusts the amount of current supplied to the coil 32 based on the temperature detected by this sensor to control the temperature of the tobacco rod. You may control so that the part 110 may become predetermined temperature.

When using the non-combustion type flavor inhalation system 200 , the user inserts the tip side of the tobacco stick 100 into the heating chamber 35 of the non-combustion type flavor inhalation device 30 . A coil 32 is arranged around the heating chamber 35 of the non-combustion type flavor inhaling device 30 . Therefore, the tobacco rod portion 110 provided on the distal end side of the tobacco stick 100 is positioned within the fluctuating electromagnetic field generated by the coil 32 . Then, the fluctuating electromagnetic field generates an eddy current (induced current) in the susceptor 117 filled in the tobacco rod portion 110, and the susceptor 117 generates heat due to this eddy current loss.

This heat generation causes the susceptor 117 to heat the tobacco filling 111 of the tobacco stick 100 to a temperature sufficient to form an aerosol. As the heating temperature at this time, there is an aspect in which the tobacco filling 111 is heated to 250° C. or more and 400° C. or less. The heating temperature is not particularly limited, but is preferably 400° C. or lower, more preferably 150° C. or higher and 400° C. or lower, and even more preferably 200° C. or higher and 350° C. or lower. Aerosol generated by heating passes through the mouthpiece portion 120 and is inhaled by the user.

[Detailed description of the coil]
FIG. 8 is a diagram for explaining the configuration of the coil 32. As shown in FIG. In FIG. 8, the unfolded state shows a state in which the coil 32 is unfolded on the XZ plane. In this manner, the coil 32 is formed to be a rectangular spiral flat coil when deployed. For example, the winding 320 that constitutes the coil 32 is arranged from one end 321 to the other end in the Z direction, and the winding 320 is arranged along the contour of the hollow portion 322 so as to form a rectangular hollow portion 322 . roll along. In this winding 320 of the first turn, the portion along the long side of the hollow portion 322 from the end portion 321 toward the distal side is defined as a long side portion 3A-1, and the distal end of the long side portion 3A-1 is X A portion along the short side of the hollow portion 322 that bends in the direction is referred to as a short side portion 3B-1. Furthermore, in the winding 320 of the first turn, a portion along the long side of the hollow portion 322 bent in the Z direction from the end of the short side portion 3A-1 is defined as a long side portion 3C-1. A portion that bends in the X direction from the proximal end and extends along the short side of the hollow portion 322 is defined as a short side portion 3D-1. A portion where the winding 320 is wound once is also referred to as a one-turn section. That is, this one-turn section includes a long side portion 3A-1, a short side portion 3B-1, a long side portion 3C-1, and a short side portion 3D-1.

Next, a second winding is performed along the outer periphery of the first winding 320 (3A-1 to 3D-1). In this second winding 320, the portion along the outer circumference of the long side portion 3A-1 is called the long side portion 3A-2, the portion along the outer circumference of the short side portion 3B-1 is called the short side portion 3B-2, A portion along the outer periphery of the long side portion 3C-1 is referred to as a long side portion 3C-2, and a portion along the outer periphery of the short side portion 3D-1 is referred to as a short side portion 3D-2.

Similarly, a third winding is made along the outer periphery of the second winding 320 (3A-2 to 3D-2). In the winding 320 of the third turn, the portion along the outer circumference of the long side portion 3A-2 is called the long side portion 3A-3, the portion along the outer circumference of the short side portion 3B-2 is called the short side portion 3B-3, A portion along the outer circumference of the long side portion 3C-2 is called a long side portion 3C-3, and a portion along the outer circumference of the short side portion 3D-2 is called a short side portion 3D-3.

Furthermore, similarly, the fourth winding is performed along the outer circumference of the third winding 320, and the fifth winding is performed along the fourth winding 320. A sixth winding is performed along the outer periphery of the winding 320 of the first turn. In this case, in the same manner as described above, in the winding 320 of the fourth to sixth turns, the portions parallel to the long side 3A-3 are defined as long side portions 3A-4 to 3A-6, and parallel to the short side portion 3B-3. 3B-4 to 3B-6, the portions parallel to the long side 3C-3 are long sides 3C-4 to 3C-6, and the portions parallel to the short side 3D-3 are short sides The sides are 3D-4 to 3D-5. Thus, the coil 32 has long sides 3A-1 to 3A-6 and 3C-1 to 3C-6 and short sides 3B-1 to 3B-6 and 3D-1 to 3D-5. there is The winding 320 is wound a plurality of times in this way, and the spiral-shaped coil 32 is formed by sequentially connecting a plurality of single-turn sections. Although the number of turns of the coil 32 is six in this embodiment, the number of turns of the coil 32 is not limited to this. For example, the number of turns of the coil 32 is set to obtain the required inductance according to the specifications, and even if the number of turns is increased to increase the inductance, the number of turns may be decreased to decrease the inductance. may be Specifically, the number of turns of the coil 32 may be adjusted according to the capacitance of the capacitor used for resonance and the target frequency.

The coil 32 has the short sides 3B-1 to 3B-6 and 3D-1 to 3D-5 curved to form a semi-cylindrical shape in which a part of the cylinder shown in FIG. The cross section to be formed is U-shaped or C-shaped. The coil 32 is arranged on the outer peripheral side of the heating chamber 35, and includes long side portions 3A-1 to 3A-6, 3C-1 to 3C-6 and short side portions 3B-1 to 3B-6, 3D-1 to 3D-1. 3D-5 are arranged along the circumference of the heating chamber 35 . In other words, the coil 32 has a structure in which the wire 320 is spirally wound along the outer peripheral surface of the heating chamber 35 around an imaginary axis perpendicular to the extending direction (Z direction) of the heating chamber 35. It has become. In the above example, the coil 32 is wound on a flat surface to form a flat coil, which is then curved to form a semi-cylindrical shape, but the present invention is not limited to this. For example, the coil 32 may be formed in a cylindrical shape without going through the process of winding on a plane. Although the number of turns of the coil 32 is six in the example of FIG. 7, the number of turns is not limited to this, and another number of turns may be set according to the required inductance. Moreover, the winding 320 that constitutes the coil 32 is not particularly limited, and may be, for example, a single conducting wire or a bundle of a plurality of conducting wires. For example, the winding 320 may be formed by bundling a plurality of (660 in this embodiment) litz wires into one and covering them. Note that the number of litz wires to be bundled may be set according to the maximum current value to be applied to the coil.

FIG. 9 is a longitudinal section of the coil 32 at the center in the depth direction (Z direction), and shows long side portions 3A-1 to 3A-6 and 3C-1 to 3C-6 when viewed from the front end side to the rear end side. It is a figure which shows an end surface. As shown in FIG. 8, the coil 32 has long sides 3A-1 to 3A-6 and long sides 3C-1 to 3C-6 arranged symmetrically with respect to a center line 32Y along the Y direction. there is In addition, in FIG. 9, the area where the heating chamber 35 is located is indicated by a chain double-dashed line. In this way, the long side portions 3A-1 to 3A-6 and the long side portions 3C-1 to 3C-6 of the coil 32 extend along the outer periphery of the heating chamber 35 in a plane orthogonal to the axial direction. They are arranged on a circle substantially concentric with 35 . The long sides 3A-1 to 3A-6 and 3C-1 to 3C-6 are linearly arranged along the axial direction (insertion/removal direction), and the short sides 3B-1 to 3B-6 and 3D- 1 to 3D-5 are curved along the circumferential direction of the heating chamber 35 . When an AC current is passed through the coils 32 arranged in this way, the directions 41 of the magnetic fluxes generated around the long sides 3A-1 to 3A-6 and 3C-1 to 3C-6 are aligned, and the coils are arranged as shown in FIG. A magnetic flux is generated in the Y direction (vertical direction) over the inside, ie, the heating chamber 35 , over almost the entire area. Thus, the coil 32 generates a magnetic flux passing through the heating chamber 35 in a predetermined direction. In particular, since the magnetic flux is aligned in the Y direction in the region within the heating chamber 35 surrounded by the long sides 3A-1 to 3A-6 and 3C-1 to 3C-6, this region is defined as the induction heating region. , the tobacco rod portion 110 is configured to be disposed within this induction heating region. A region 43 indicated by a two-dot chain line in FIG. 8 corresponds to the induction heating region. That is, in FIG. 8, the long sides 3A-1 to 3A-6 and 3C-1 to 3C-6 surrounded by two-dot chain lines are arranged so as to surround the induction heating area.

[Comparative example]
FIG. 10 is a schematic configuration diagram of a non-combustion type flavor inhalation device 30R that generates magnetic flux in the axial direction of the tobacco rod portion 110 as a comparative example, and FIG. 11 is a coil 32R provided in the non-combustion type flavor inhalation device 30R. is a perspective view of the. A non-combustion type flavor inhalation device 30R shown in FIG. The coil 32R is provided such that the winding 320 forming the coil 32R is wound in the circumferential direction along the outer periphery of the chamber-side peripheral wall 311. As shown in FIG. In this case, the coil 32R generates magnetic flux in the axial direction (Z direction) of the tobacco stick 100E inserted into the heating chamber 35. FIG. Reference numeral 42 indicates the direction of this magnetic flux. Other configurations are the same as those of the non-combustion type flavor inhalation device 30 described above.

FIG. 12 is a diagram showing the relationship between the magnetic flux and the susceptor 117 when the tobacco stick 100 is inserted into the non-combustion type flavor inhaling device 30R of the comparative example. FIG. 12 shows the YZ cross section of the tobacco rod portion 110 inserted into the heating chamber 35 of the non-combustion type flavor inhaling device 30R. As shown in FIG. 12, the winding portion 170 forming the susceptor 117 is arranged substantially parallel to the axial direction (Z direction) in the YZ cross section. On the other hand, since the coil 32R of the non-combustion type flavor inhaling device 30R generates a magnetic flux in the axial direction, the area of the susceptor 117 through which this magnetic flux penetrates is very small, making it difficult to heat the susceptor 117 efficiently. there were.

On the other hand, FIG. 13 is a diagram showing the relationship between the magnetic flux and the susceptor 117 when the tobacco stick 100 is inserted into the non-combustion type flavor inhaling device 30 according to this embodiment. FIG. 13 shows an XY section of the tobacco rod portion 110 inserted into the heating chamber 35 of the non-combustion type flavor inhaling device 30 . Note that FIG. 13 shows the outermost winding portion 170 and omits the inner winding portion 170 .

The non-combustion type flavor inhaling device 30 of the present embodiment generates magnetic flux in a direction (Y direction) perpendicular to the axial direction of the tobacco rod portion 110 . Therefore, in a region (central region) 177 near the center of the susceptor 117 in the X direction, the magnetic flux penetrates each winding portion 170 substantially along the normal direction of the winding portion 170. A large area penetrating through the portion 170 can be secured, and a large amount of eddy current is generated in the winding portion 170, thereby improving heat generation efficiency. Although not shown in FIG. 13, since a plurality of winding portions 170 are present so as to be laminated in the radial direction, each winding portion 170 generates heat, and heat is generated in a wide range from the center to the outer circumference of the tobacco rod portion 110. can be made In addition, in the area outside the central area 177, the area through which the magnetic flux penetrates is small, and the amount of heat generated by electromagnetic induction is less than in the central area. Therefore, the heat of the central region is transferred to the peripheral region, and the surrounding portion of the peripheral region is also heated to a temperature sufficient to heat the tobacco filling 111 . Therefore, the tobacco filling 111 is appropriately heated over the entire tobacco rod portion 110 .

The shape of the heating chamber 35 of the non-combustion type flavor inhaling device 30 is not particularly limited as long as the tobacco stick 100 can be inserted therein. However, from the viewpoint of holding the tobacco stick 100 stably, it is preferably cylindrical. When the shape of the heating chamber 35 is cylindrical, the diameter of the cylinder can be appropriately selected according to the size of the tobacco stick 100, and is, for example, 5.5 mm or more and 8.0 mm or less, 6.0 mm or more and 7 mm or more. 0.7 mm or less, and more preferably 6.5 mm or more and 7.2 mm or less. In addition, when both the shape of the heating chamber 35 and the shape of the tobacco stick 100 are cylindrical, the diameter of the recess may be greater than or equal to the diameter of the tobacco stick 100 minus 0.5 mm and less than or equal to the diameter of the tobacco stick 100. preferable. By setting the diameter of the heating chamber 35 within this range, the holding stability of the tobacco stick 100 can be improved, and the gap between the heating chamber 35 and the tobacco stick 100 can be reduced. Desired ventilation resistance can be obtained.

According to this embodiment, the susceptor 117 is oriented perpendicular to the magnetic flux generated by the coil 32 when the tobacco stick 100 is inserted into the heating chamber 35 . Here, the susceptor 117 has a sheet-like winding portion wound around the axis of an imaginary winding shaft along the insertion/removal direction, and formed in a spiral shape in a cross section (XY cross section) perpendicular to the winding shaft. As a result, the tobacco stick 100 is inserted into the heating chamber 35 of the non-combustion type flavor inhalation device 30, and magnetic flux is generated by the coil 32 of the non-combustion type flavor inhalation device 30 in a direction orthogonal to the insertion/extraction direction of the tobacco stick 100. In this case, since this magnetic flux penetrates the winding portion 170 in the thickness direction in a region near the center in the radial direction of the susceptor 117 (for example, the central region 177 shown in FIG. 13), a large area can be secured for the magnetic flux to penetrate. Thereby, heat generation efficiency can be improved. Since the tobacco stick 100 of the present embodiment has a cylindrical shape, how the tobacco stick 100 is rotated in the circumferential direction when the tip is inserted into the heating chamber 35 of the non-combustion type flavor inhalation device 30. It can be inserted into the heating chamber 35 even in this state. That is, when the tobacco stick 100 is inserted into the heating chamber 35, its circumferential position relative to the heating chamber 35 is not specified. For example, although FIG. 4B shows the top surface of the susceptor 117, the tobacco stick 100 may be inserted into the heating chamber 35 with the top surface of the susceptor 117 facing upward, or the top surface of the susceptor 117 may be placed sideways (horizontally). direction) is not specified. On the other hand, the non-combustion type flavor inhaling device 30 uses the coil 32 to generate magnetic flux in the vertical direction (Y direction) of the heating chamber 35 . Therefore, when the tobacco stick 100 is inserted into the heating chamber 35, the relative positional relationship between the magnetic flux generated by the coil 32 and the susceptor 117 is different due to the difference in the position of the tobacco stick 100 in the circumferential direction. can be considered to give However, in this embodiment, the susceptor 117 is formed in a spiral shape in a cross section perpendicular to the axial direction of the tobacco stick 100, and the coil 32 can rotate regardless of the position of the tobacco stick 100 in the circumferential direction. The relative positional relationship between the magnetic flux and the susceptor 117 does not change significantly, and the heat generation efficiency does not change significantly. That is, the tobacco stick 100 of the present embodiment can suppress variations in heat generation efficiency due to differences in circumferential position with respect to the heating chamber 35 when the tobacco stick 100 is inserted into the heating chamber 35 .

Also, in this embodiment, the tobacco filling 111 is fixed to the surface (inner peripheral surface) of the susceptor 117 . That is, the tobacco stick 100 of the present embodiment is integrally composed of the tobacco filling 111 to be heated and the susceptor 117 to be heated, so that the tobacco filling 111 can be heated accurately.

In this embodiment, the susceptor 117 is made of a material with a magnetic permeability of less than 1×10 ⁻³ . Even when the susceptor 117 is made of a material having a low magnetic permeability, the tobacco stick 100 of the present embodiment can heat the tobacco filling 111 by improving the heating efficiency as described above. It is possible to generate heat at a temperature sufficient for this purpose, so that the degree of freedom in material selection can be improved.

In addition, in this embodiment, the coil 32 includes a conducting wire 320 spirally wound along the outer peripheral surface of the heating chamber 35 around a virtual axis perpendicular to the extending direction of the heating chamber 35 . As a result, the direction of the magnetic flux generated in the heating chamber 35 can be aligned in the direction orthogonal to the insertion/removal direction of the tobacco rod portion 110, and a large area penetrating the susceptor 117 can be ensured as described above, resulting in heat generation efficiency. can be improved.

<Modification>
In the above-described embodiment, the tobacco rod portion 110 is filled with the tobacco filler 111 in a state of being fixed to the susceptor 117. However, this modification is not limited to this. , and the susceptor 217 are separately provided, and the tobacco rod portion 110 is filled with each of them. Since other configurations are the same as those of the above-described embodiment, repetitive description of the same elements will be omitted.

14A and 14B are diagrams showing the configuration of a tobacco stick 100G according to Modification 4. FIG. 14 shows the tip end face of the tobacco stick 100G, that is, the tip end face of the tobacco rod portion 110. FIG. In the example of FIG. 14, when the tobacco stick 100G is inserted into the non-combustion flavor inhalation device 30, the non-combustion flavor inhalation device 30 generates a magnetic flux in the vertical direction (Y direction) indicated by reference numeral 41.

The tobacco stick 100G shown in FIG. 14 has a susceptor 217 inside the tobacco rod portion 110. The configuration of the susceptor 217 is the same as that of the susceptor 117 described above, except that the tobacco filling 111 is not fixed and that a predetermined gap is provided between the circumferential portions 170 adjacent in the radial direction.

The tobacco filling 111 is adjusted to a shape that allows it to be filled in the gaps of the winding portions 170 that are arranged apart from each other. For example, leaves, veins, stems, roots, flowers, etc. of tobacco plants of varieties selected from yellow varieties, burley varieties, orient varieties, native varieties, other Nicotiana-tabacum varieties, and Nicotiana-Rustica varieties. After collecting the part of (1), the collected material is dried to have a moisture content of about 10 to 15% by weight, and cut into pieces having a width of about 0.5 to 1.5 mm.

The susceptor 217 is formed by winding a sheet to which the tobacco filling 111 is not attached around the axis of an imaginary winding shaft in the same manner as in FIG. 6 so that the cross section perpendicular to the axial direction is spiral. In this case, when the sheet on the other end 176 side is further wound around the outer circumference of the winding portion 170 in state B, a gap is formed between the winding portion 170 on the inner circumference side and the winding portion 170 on the outer circumference side. Then, after inserting the susceptor 117 provided with a gap between the winding parts 170 into the cylinder of the wrapping paper 112 through the end opening of the winding paper 112 formed in a cylindrical shape, a tobacco filler such as shredded tobacco is inserted between the winding parts 170 . By filling with 111, the tobacco rod portion 110 is formed (state E). Further, when the sheet on the other end 176 side is further wound around the outer circumference of the winding portion 170 in the state B, the tobacco filler 111 is filled between the winding portion 170 on the inner circumference side and the winding portion 170 on the outer circumference side. The sheet may be wrapped while

30... non-combustion type flavor suction device 31... housing 32... coil (induction coil)
33 Battery unit (power source)
34... Control section 35... Heating chamber 36... Air flow paths 100, 100A to 100E... Tobacco stick 101... Mouth end 103... Vent 110... Tobacco rod portion 111 Tobacco filler 112 Wrapping paper 117, 217 Susceptor 120 Mouthpiece portion 121 Cooling segment 122 Filter segment 130 Tipping paper 200 Non-burning type Flavor suction system 311 Chamber side peripheral wall 312 Chamber rear wall 313 Outer peripheral surface 320 Winding 322 Hollow part

Claims

A flavor stick that is removably housed in a heating chamber of a non-combustion type flavor inhaling device and that is induction-heated by a change in magnetic flux generated by an induction coil provided around the heating chamber,
a rod portion including a flavor source, an aerosol-generating substrate, and a heating element that is heated by an induced current due to a change in the magnetic flux and heats the flavor source and the aerosol-generating substrate;
The heating element is in the form of a sheet, is wound around an imaginary axis along the insertion/extraction direction when the rod part is inserted into/extracted from the heating chamber, and spirals in a cross section perpendicular to the imaginary axis. Been formed,
flavored sticks.
The rod part is inserted into and removed from the heating chamber with the insertion and removal direction as a longitudinal direction, and the induction coil is configured to generate a magnetic flux in a direction orthogonal to the insertion and removal direction.
The flavor stick according to claim 1.
The flavor stick according to claim 1 or 2, wherein the mixture containing the flavor source and the aerosol-generating substrate is adhered to the surface of the heating body.
The flavor stick according to any one of claims 1 to 3, wherein the magnetic permeability of said heating element is less than 1 x 10-3 .
The heating body has a ratio of a first dimension in a first direction to a second dimension in a second direction orthogonal to the first direction, when the first dimension is 1.0, the second dimension is The flavor stick according to any one of claims 1 to 4, which is set to be 0.25 to 1.0.
A flavor stick according to any one of claims 1 to 5, and a non-combustion type flavor sucking device that heats the flavor stick by an induction heating method,
The non-combustion type flavor inhalation device,
a heating chamber that removably accommodates the flavor stick;
an induction coil that is arranged around the heating chamber and generates a magnetic flux in a direction perpendicular to the insertion/extraction direction in the flavor stick inserted into the heating chamber to induction-heat the heating body;
comprising
Non-combustion flavor suction system.
the heating chamber extends along the insertion/extraction direction of the flavor stick;
7. The non-combustion type according to claim 6, wherein said induction coil comprises a conducting wire spirally wound along the outer peripheral surface of said heating chamber around a virtual axis perpendicular to the extending direction of said heating chamber. Flavor suction system.