WO2023021564A1

WO2023021564A1 - Flavor stick and non-combustion type flavor inhalation system

Info

Publication number: WO2023021564A1
Application number: PCT/JP2021/029941
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 accommodated in a heating chamber of a non-combustion type flavor inhalation device in an insertable and extractable manner, and inductively heated by a change in magnetic flux generated by an induction coil provided around the heating chamber, the flavor stick being provided with a rod portion comprising a flavor source, an aerosol generation base material, and a heating element heated by an inductive current due to the change in magnetic flux to heat the flavor source and the aerosol generation base material, wherein: the heating element has a plate-like shape or a sheet-like shape and has a planar face at least in a part of the surface thereof; the planar face is arranged to be substantially orthogonal to the magnetic flux when the rod portion is inserted into the heating chamber in a predetermined state; and a width dimension of the planar face in the direction orthogonal to the magnetic flux is defined to be greater than a thickness dimension of the heating element in a direction parallel to the magnetic flux.

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 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 above-mentioned flavor stick, the rod portion is inserted into and removed from the heating chamber with the longitudinal direction being the insertion/removal direction, the heating body is plate-shaped, and the induction coil emits a magnetic flux in a direction orthogonal to the insertion/removal direction. configured to generate
The flat surface may be arranged along the longitudinal direction of the rod portion.

In the flavor stick, 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 flavor stick, the heating body may be in the form of a sheet, and the heating body may include a plurality of flat areas forming the flat surfaces and curved areas connecting the flat areas.

In the flavor stick, the rod portion 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 perpendicular to the insertion and removal direction,
The flat region of the sheet-like heating body may be arranged along the longitudinal direction of the rod portion.

In the flavor stick, a 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 body has a ratio of a first dimension in a first direction of the surface to a second dimension in a second direction perpendicular to the first direction of the surface, which is equal to the first dimension is 1.0, the second dimension may be set to 0.25 to 1.0.

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;
Magnetic flux is generated in a direction substantially orthogonal to the flat surface of the heating body for the flavor sticks arranged around the heating chamber and inserted into the heating chamber in a prescribed state, thereby heating the heating body by induction. an induction coil that
Prepare.

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.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram of the non-combustion type flavor inhalation system which concerns on 1st embodiment. 1 is a perspective view of a tobacco stick according to a first embodiment; FIG. FIG. 4 is a diagram illustrating the internal structure of the tobacco stick according to the first 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; 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). FIG. 4 is a plan view showing a state in which a tobacco stick is inserted into the heating chamber of the non-burning flavor inhalation device; FIG. 10 is a diagram showing a modified example of a tobacco stick; FIG. 10 is a diagram showing the configuration of a tobacco stick according to Modification 2; FIG. 10 shows the folding process of the susceptor; FIG. 5 is a graph showing changes in temperature when a susceptor made of permalloy is induction-heated. FIG. 10 is a diagram showing a configuration of a tobacco stick according to Modification 4; FIG. 2 is a schematic configuration diagram of a non-combustion type flavor inhalation device according to a second embodiment; It is a perspective view of the coil which concerns on 2nd embodiment. FIG. 4 is a schematic configuration diagram of a tobacco stick according to a second embodiment;

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 The outer peripheral surface of the tobacco stick 100 is provided with a reference mark 131 for inserting the tobacco stick 100 into the non-combustion type flavor inhaling device 30 in a prescribed state as described later.

[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]
The tobacco rod portion 110 can be obtained by wrapping a tobacco filler 111 containing a tobacco filler (flavor source) and an aerosol-generating base material, and a susceptor 116 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 front views, FIG. 4B are plan views, and FIG. 4C are side views.
The susceptor 116 shown in FIG. 4 is plate-shaped and has a flat surface on at least part of its surface. The susceptor 116 in FIG. 4 is generally rectangular parallelepiped, and among its surfaces (six surfaces), a first surface 61A and a second surface 61B perpendicular to the thickness direction (y direction) are sufficiently wide and flat compared to other surfaces. It is a smooth surface (flat surface).

Tobacco filler 111 is fixed to first surface 61A of susceptor 116 . Alternatively, the tobacco filling 111 may be fixed to the second surface 61B of the susceptor 116, or may be fixed to both the first surface 61A and the second surface 61B. 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 116 to form a slurry, which is applied to the first surface 61A of the susceptor 116 and dried to adhere to the first surface 61A. Also, the slurry-like tobacco filler 111 is applied to the first surface 61A of the raw sheet (for example, metal foil) of the susceptor 116, dried, and then cut into a predetermined width to form the plate-like susceptor 116. good too.

The material of the susceptor 116 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 116 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 116 of this embodiment is made of aluminum.

The thickness of the susceptor 116 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. The length (first dimension) in the axial direction (Z direction) of the susceptor 116 is, for example, 4 mm or more and 60 mm or less, and preferably the same length as the axial length of the tobacco rod portion 110 . In addition, the length of the susceptor 116 may be 1/4 or more of the length of the tobacco rod portion 110 and less than the length of the

tobacco rod portion

110, or 1/4 or more of the length of the tobacco rod portion 110 or less than the length of the tobacco rod portion 110. It may be less than 1/2 of the rod portion 110 .

The width (second dimension) in the direction perpendicular to the axial direction of the susceptor 116 (the radial direction of the tobacco rod portion) is, for example, 0.5 mm or more and 7 mm or less, preferably 1 mm or more and 3 mm or less, more preferably It is 1 mm or more and 2 mm or less.

The susceptor 116 has a ratio of the length LA in the axial direction to the width WA in the direction perpendicular to the axial direction, when the length LA is 1.0, the width WA is 0.25 to 1.0. may be set to be By setting the ratio of the length LA to the width WA close to 1.0:1.0, that is, by making the shape close to a square, the susceptor 116 can be efficiently heated.

FIG. 5 is a view showing the tip end surface of the tobacco stick 100, and schematically shows the filling state of the susceptor 116 carrying the tobacco filler 111. FIG. Although a large number of tobacco fillers 111 and susceptors 116 are packed therein, only some of them are indicated by reference numerals in FIG. 5 for the sake of convenience. It should be noted that members with the same type of hatching indicate members of the same type. As shown in FIG. 5, a plurality of susceptors 116 are filled with their flat surfaces aligned so that the flat surfaces are parallel to each other. This flat surface is oriented so as to be substantially perpendicular to the alternating magnetic flux described later when the tobacco stick 100 is inserted into the non-combustion type flavor inhaling device 30 in a prescribed state. Further, as shown in FIG. 4B, the susceptor 116 is formed longitudinally in one direction, and the longitudinal direction is arranged along the axial direction (longitudinal direction) of the tobacco stick 100 . Although the method of filling the tobacco rod portion 110 with the susceptors 116 in such an arrangement is not particularly limited, for example, a plurality of susceptors 116 may be arranged with their long sides (major axes) aligned and their flat surfaces aligned. In this state, they are placed on the wrapping paper 112 so that their long axes are along one edge of the wrapping paper 112 . Then, the tobacco rod portion 110 is formed by winding the other edge of the wrapping paper 112 around the long axis of the susceptor 116 and bonding this edge to the previous edge. In addition, by inserting a plurality of susceptors 116 in a state in which the orientation of the longitudinal direction and the orientation of the flat surface are aligned, the susceptors 116 are inserted into the cylinder of the winding paper 112 from the end opening of the winding paper 112 formed in a cylindrical shape, A tobacco rod portion 110 may be formed.

As shown in FIG. 5, when a plurality of susceptors 116 are filled with the flat surfaces of the susceptors 116 oriented in the same direction, the adjacent susceptors 116 are not completely in close contact with each other, and the first surface 61A of the susceptor 116 is flattened. A gap is generated between the adjacent susceptors 116 due to the fact that the tobacco filler 111 supported by the susceptors 116 is interposed between the susceptors 116 and the susceptors 116 are slightly distorted, and this gap ensures ventilation. For example, the tobacco filling 111 has unevenness on its surface due to the drying process, and this unevenness creates a gap between the adjacent susceptor 116 . In addition, since the susceptor 116 is a thin plate with a thickness of, for example, several μm, slight distortion occurs during the coating process, drying process, cutting process, etc. of the tobacco filler 111 . A gap occurs in the

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 116 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 116 can be sufficiently transmitted to the filling 211, and unnecessary filtration of the flavor component can be suppressed during suction, resulting in favorable release. can be ensured.

Further, in the example of FIG. 5, when the tobacco stick 100 is inserted into the non-combustion type flavor inhalation device 30 in a prescribed state, the non-combustion type flavor inhalation device 30 moves in the vertical direction (Y direction) indicated by reference numeral 41. A magnetic flux is generated. That is, each susceptor 116 is arranged such that the flat surface of the susceptor 116 in the tobacco rod portion 110 is perpendicular to the magnetic flux direction 41 . By generating magnetic flux penetrating the susceptors 116 in this manner, an eddy current (induced current) is generated in each susceptor 116 , and the susceptor 116 generates heat due to this eddy current loss. Note that this heat generation efficiency differs depending on the orientation of the susceptor 116 with respect to the direction 41 of the magnetic flux. also higher. For example, in the example of FIG. 5, the current value generated in the susceptor 116 when the magnetic flux is generated in the Y direction is about twice the current value generated in the susceptor 116 when the magnetic flux is generated in the X direction. confirmed. In the present embodiment, the susceptors 116 filled in the tobacco rod portion 110 are arranged in such a direction that the efficiency is high, so that each susceptor 116 efficiently heats the tobacco filler 111. can.

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 116, 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 116, and the tobacco filling 111 is and a susceptor 116 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 mode cell measurement Dispersion medium: Ion-exchanged water Dispersion method: Measured after 1 minute of ultrasonic irradiation Refractive index: 1.92-0.00i (sample refraction) / 1.33-0.00i (dispersion medium 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. 6 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 opening 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.

FIG. 7 is a diagram for explaining the configuration of the coil 32. FIG. In FIG. 7, 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. 8 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. 8, 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. Coils 32 thus generate a magnetic flux in a predetermined direction through heating chamber 35. Tobacco stick 100 also includes a plurality of susceptors 116 within tobacco rod portion 110, the planar surfaces of susceptors 116 as described above. The width dimension of is set larger than the thickness dimension, and the susceptor 116 is formed in a plate shape. These plate-shaped susceptors 116 are arranged so as to be perpendicular to the magnetic flux direction 41 when the tobacco rod portion 110 is inserted into the heating chamber 35 in a prescribed state. As a result, when the coil 32 generates magnetic flux in a direction orthogonal to the flat surface of the susceptor 116 of the tobacco stick 100, the width dimension of the flat surface orthogonal to the magnetic flux is larger than the thickness dimension of the susceptor 116. , the susceptor 116 can be secured to have a larger area through which the magnetic flux penetrates in the orthogonal direction, thereby improving the heat generation efficiency. Since the coil 32 generates a magnetic flux in a predetermined direction, as shown in FIG. 8, particularly near the center of the inner region, the tobacco rod portion 110 of the tobacco stick 100 can be inserted into this center region. desirable. Here, the central region (also referred to as an induction heating region) is a region on the inner side (heating chamber 35 side) of the cylindrical coil 32 and is a region located in the center of the coil 32 in the axial direction (Z direction). Specifically, in the axial direction of the coil 32, it is the area from the rear end to the front end of the hollow portion 322, for example, the area surrounded by the chain double-dashed line 43 in FIG. 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. In this embodiment, the tip 102 of the tobacco stick 100 is inserted into the heating chamber 35 so that the tip 102 is in contact with the chamber rear wall 312 of the heating chamber 35 , so that the tobacco rod portion 110 is positioned within the central region of the coil 32 . is configured as

FIG. 9 is a plan view showing a state in which the tobacco stick 100 is inserted into the heating chamber 35 of the non-combustion type flavor inhaling device 30. FIG. The non-combustion type flavor inhaling device 30 is provided with a matching mark 331 on the top of the tip side. As shown in FIG. 9, the user holds the tobacco stick 100 in the non-combustion type so that the reference mark 131 provided on the tobacco stick 100 and the reference mark 331 of the non-combustion type flavor inhalation device 30 are aligned in a straight line. Insert into flavor suction device 30 . As a result, the tobacco stick 100 is inserted into the non-burning flavor inhalation device 30 in a prescribed state. Here, the prescribed state is a state in which the flat surface of the susceptor 116 of the tobacco stick 100 is perpendicular to the magnetic flux direction 41 of the non-combustion type flavor inhaling device 30 . That is, the reference mark 131 of the tobacco stick 100 is provided so that the orientation of the susceptor 116 can be specified, and the circumferential direction of the tobacco stick 100 is adjusted so that the reference mark 131 and the reference mark 331 are aligned. It is used as an index to set the default state.

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 in the susceptor 116 filled in the tobacco rod portion 110, and the susceptor 116 generates heat due to this eddy current loss.

This heat generation causes the susceptor 116 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.

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 116 is oriented perpendicular to the magnetic flux generated by the coil 32 when the tobacco stick 100 is inserted into the heating chamber 35 in a prescribed state. In the susceptor 116, the width dimension of the flat surface in the direction perpendicular to the magnetic flux is set larger than the thickness dimension of the susceptor 116 in the direction parallel to the magnetic flux. As a result, when the coil 32 generates a magnetic flux in a direction orthogonal to the flat surface of the susceptor 116 of the tobacco stick 100, a larger area for the magnetic flux to penetrate the susceptor 116 in the orthogonal direction can be ensured. heat generation efficiency can be improved. Then, the susceptor 116 can efficiently heat the tobacco filling 111 . Therefore, even if the susceptor 116 is made of a material having a low magnetic permeability, the tobacco filling 111 can be sufficiently heated, the range of material selection is widened, and material procurement can be facilitated.

In addition, in the present embodiment, the tobacco rod portion 110 of the tobacco stick 100 is formed with the axial direction (insertion/removal direction) as the longitudinal direction, and the flat surface of the susceptor 116 is arranged along the longitudinal direction of the tobacco rod portion 110 . As a result, the surface of the susceptor 116 that contributes to heat generation can be secured along the longitudinal direction, and the susceptor 116 can efficiently generate heat. Furthermore, in this embodiment, a plurality of plate-shaped susceptors 116 are arranged in the tobacco rod portion 110, and the flat surfaces of the respective susceptors 116 are arranged in the same direction. As a result, the plurality of susceptors 116 can efficiently generate heat, and the tobacco filling 111 can be efficiently heated.

In this embodiment, the susceptors 116 are arranged so as to be perpendicular to the direction 41 of the magnetic flux. may be configured to allow For example, even if part or all of the susceptor 116 has an inclination within ±20 degrees, preferably within ±10 degrees, with respect to a plane orthogonal to the direction 41 of the magnetic flux, the susceptor 116 is perpendicular to the direction 41 of the magnetic flux. It can be assumed that

<Modification 1>
FIG. 10 is a diagram showing a modified example of tobacco sticks 100A and 100B. FIG. 10 is a view showing tip surfaces of tobacco sticks 100A and 100B, showing the tip of tobacco rod portion 110. As shown in FIG. In the above-described embodiment, the tobacco rod portion 110 (tobacco stick 100) is cylindrical and has a circular outer shape in the cross section (XY plane) orthogonal to the axial direction (Z direction). The outer shape of the

sticks

100A and 100B on the XY plane is not circular. In particular, the tobacco sticks 100A and 100B of this modification have a length (width) W1 in the first direction (X direction) that is the length (width) W1 in the second direction perpendicular to the first direction in a cross section perpendicular to the axial direction. (Height) It is set longer than H1. Since the configuration other than this shape is the same as that of the above-described embodiment, the description of the same elements will be omitted.

The tobacco stick 100A is formed in an elliptical cylindrical shape with an elliptical cross-sectional shape. In the tobacco stick 100A of FIG. 11, the second direction (Y direction) is the direction of the magnetic flux generated by the non-burning flavor inhalation device 30. In FIG. For this reason, the susceptor 116 provided on the tobacco rod portion 110 of the tobacco stick 100A is arranged such that the flat surface is perpendicular to the second direction, that is, parallel to the XZ plane. Further, when the tobacco stick 100A has an elliptical cylindrical shape, the heating chamber 35 of the non-combustion type flavor inhaling device 30 is similarly formed in a cylindrical shape. That is, in the XY section perpendicular to the axial direction of the heating chamber 35 as well, the length (width) in the first direction (X direction) is longer than the length (height) in the second direction perpendicular to the first direction. set long. For this reason, in the tobacco stick 100A and the heating chamber 35, in the circumferential direction of the portion with the long length in the first direction (wide portion) or the portion with the short length in the second direction (low height portion) The tobacco stick 100A can be inserted into the heating chamber 35 when the positions (hereinafter also simply referred to as circumferential directions) are aligned, and cannot be inserted when the circumferential directions are not aligned. It is configured. Here, the non-combustion type flavor inhaling device 30 generates a magnetic flux in the Y direction (second direction) with respect to the heating chamber 35 . Therefore, by aligning the circumferential direction of the tobacco stick 100A with the circumferential direction of the heating chamber 35 and inserting the tobacco stick 100A into the heating chamber 35, the susceptor is arranged perpendicular to the second direction. 116 is perpendicular to the direction of magnetic flux by coil 32, which is the default state.

The tobacco stick 100B is formed in a cuboid shape with a rectangular cross-sectional shape. In the tobacco stick 100B as well, the susceptor 116 provided on the tobacco rod portion 110 is arranged such that the flat surface thereof is perpendicular to the second direction, ie parallel to the XZ plane. In addition, when the tobacco stick 100B has a rectangular parallelepiped shape, the heating chamber 35 of the non-combustion type flavor inhaling device 30 is also shaped like a rectangular parallelepiped. That is, in the XY section perpendicular to the axial direction of the heating chamber 35 as well, the length (width) in the first direction (X direction) is longer than the length (height) in the second direction perpendicular to the first direction. The length (height) of the heating chamber 35 in the second direction is set to be longer than the length of the tobacco rod portion 110 in the first direction. Therefore, when the tobacco stick 100B and the heating chamber 35 are aligned in the circumferential direction, the tobacco stick 100B can be inserted into the heating chamber 35, and when the circumferential direction is not aligned. is configured so that it cannot be inserted. Here, the non-combustion type flavor inhaling device 30 generates a magnetic flux in the Y direction (second direction) with respect to the heating chamber 35 . Therefore, by aligning the circumferential direction of the tobacco stick 100B and the circumferential direction of the heating chamber 35 and inserting the tobacco stick 100B into the heating chamber 35, the susceptor is arranged orthogonal to the second direction. 116 is perpendicular to the direction of magnetic flux by coil 32, which is the default state.

In this way, when the tobacco sticks 100A, 100B and the heating chamber 35 are formed so that the size W1 in the first direction and the size H1 in the second direction are different in the cross section orthogonal to the axial direction, the tobacco stick 100A, When inserting the tobacco sticks 100B into the heating chamber 35, the tobacco sticks 100A and 100B can be inserted into the non-burning flavor inhalation device 30 in a prescribed state by aligning them in the circumferential direction. Therefore, the matching marks 131 and 331 can be omitted.

<Modification 2>
FIG. 11 is a diagram showing the configuration of a tobacco stick 100 according to Modification 2. As shown in FIG. 11 shows the tip end face of the tobacco stick 100, that is, the tip end face of the tobacco rod portion 110. FIG. FIG. 12 shows the folding process of the susceptor 216 . In this modification, the tobacco rod portion 110 is filled with the sheet-like susceptor 216 that is folded so that the cross section has a zigzag (serpentine) shape. Since other configurations are the same as those of the above-described embodiment, repetitive description of the same elements will be omitted.

The susceptor 216 is a metal sheet, and has the same configuration as the susceptor 116 described above except that it is sheet-like, such as the material, thickness, and configuration in which the tobacco filler 111 is fixed to the first surface 61A. When the susceptor 216 before being folded is laid out on the plane XZ plane, the length in the axial direction (Z direction) is LA, the width in the direction (X direction) orthogonal to the axial direction is WA, and the length When the width LA is 1.0, the width WA may be set to a ratio of 0.5 to 1.5. That is, the susceptor 216 may be set such that the ratio of length LA to width WA is close to 1.0:1.0. In this manner, the susceptor 116 can be efficiently heated by making the shape of the susceptor 216 when it is developed into a plane shape close to a square. Further, since the sheet-like susceptor 216 has a uniform temperature due to heat transfer, the tobacco filler 111 can be appropriately heated.

As shown in FIG. 12, in step A, the susceptor 216 is arranged in a predetermined direction from one end portion 6A to the other end portion side, and the susceptor 216 is bent at a position separated from the end portion 6A by a predetermined distance so that the second surfaces 61B are separated from each other. are bent to form a bent portion (bent region) 6C. In this case, the area between the end portion 6A and the bent portion 6C is the flat area 6B corresponding to the flat surface described above.

In step B, the susceptor 216 is bent at a position a predetermined distance away from the bent portion 6C of the susceptor 216, and bent so that the tobacco fillers 111 fixed to the first surface 61A come closer to each other to form the bent portion 6E. . In this case, the area between the bent portion 6C and the bent portion 6E becomes the flat area 6D.

In step C, the susceptor 216 is bent at a position a predetermined distance away from the bent portion 6E of the susceptor 216, and bent so that the second surfaces 61B are close to each other to form the bent portion 6G. In this case, the area between the bent portion 6E and the bent portion 6G becomes the flat area 6F.

By alternately repeating the step B of folding the susceptor 216 with the first surface 61A inside and the step C of folding the susceptor 216 with the second surface 61B inside, the susceptor 216 meanders when viewed in the axial direction. Fold as shown. Then, the steps B and C of alternately folding the susceptor 216 are repeated a predetermined number of times to create a plurality of flat regions. When repeating the steps B and C, the distance between the bent portions, that is, the length of the flat region is gradually changed from that in the previous step so that the cross-sectional shape of the susceptor 216 after folding becomes close to a circle. to form.

In step D, the tobacco rod portion 110 is formed by inserting the folded susceptor 216 inside the cylindrically formed wrapping paper 112 . The configuration other than the tobacco rod portion 110 is formed in the same manner as in the above-described embodiment.

As shown in FIG. 11, the susceptor 216 of this modification has a plurality of

flat regions

6B, 6D, 6F, . . . 6P. These

flat areas

6B, 6D, 6F, . It is formed so as to be substantially perpendicular to the direction 41 of the applied magnetic flux.

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 in a prescribed state. The fluctuating electromagnetic field generated by the non-combustion flavor inhaling device 30 generates eddy currents in the susceptor 216 filled in the tobacco rod portion 110, and the eddy current loss causes the susceptor 216 to generate heat.

According to this modification, since the

flat regions

6B, 6D, 6F of the susceptor 216 are arranged perpendicular to the magnetic flux direction 41, heat is generated efficiently, and the tobacco filling 111 is efficiently heated. can do. In addition, in this modification, the tobacco rod portion 110 of the tobacco stick 100 is formed with the longitudinal direction (insertion/removal direction) of the tobacco rod portion 100, and the flat region of the susceptor 216 extends along the longitudinal direction of the tobacco rod portion 110. It is arranged from the leading end to the trailing end. As a result, a large area of the susceptor 216 that contributes to heat generation is secured along the longitudinal direction, and the susceptor 216 can efficiently generate heat.

<Modification 3>
Although aluminum is used as the material of the susceptor 116 in the above-described embodiment, the material of the susceptor 116 is not limited to this. For example, permalloy may be used as the material of the susceptor 116 . Since other configurations are the same as those of the above-described embodiment, repetitive description of the same elements will be omitted.

Permalloy is an alloy of Fe—Ni, and in this modified example, so-called 78 permalloy with a Ni content of about 78.5% is used. Also, other types of permalloy may be used instead of 78 permalloy. For example, supermalloy containing Mo in addition to Ni and Fe, and mu-metal containing Cu and Cr may be used.

When the susceptor 116 is made of permalloy, the initial magnetic permeability is high and the tobacco filling 111 can be heated efficiently. is suppressed.

FIG. 13 is a graph showing changes in temperature when the susceptor 116 made of permalloy is induction-heated. In the graph of FIG. 13, the vertical axis indicates temperature and the horizontal axis indicates elapsed time. As shown in FIG. 13, when the susceptor 116 made of permalloy reaches a predetermined temperature (335° C. in the example shown), the temperature stops rising and this temperature is maintained.

Therefore, according to this modification, even if the control unit 34 or the like fails and the temperature control function does not work properly, the temperature of the susceptor 116 can be prevented from rising above the predetermined temperature. . That is, it can work as a fail-safe function.

<Modification 4>
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 116. However, this modification is not limited to this. , and the susceptor 316 are separated from each other, 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 tobacco sticks 100C and 100D according to Modification 4. FIG. 14 shows the tip end faces of tobacco sticks 100C and 100D, that is, the tip end face of tobacco rod portion 110. As shown in FIG. In the example of FIG. 14, when the tobacco sticks 100C and 100D are inserted into the non-combustion type flavor inhalation device 30 in a prescribed state, the non-combustion type flavor inhalation device 30 moves the tobacco sticks 100C and 100D in the vertical direction (Y direction) indicated by reference numeral 41. A magnetic flux is generated.

A tobacco stick 100C shown in FIG. 14 has a plurality of susceptors 316 spaced apart from each other and arranged at random positions in the XY cross section of the tobacco rod portion 110. Between these susceptors 316, the tobacco filler 111 is filled. be done. The structure of the susceptor 316 is the same as that of the susceptor 116 described above, except that the tobacco filler 111 is not fixed. Each susceptor 316 is arranged orthogonal to the magnetic flux direction 41 . A fluctuating electromagnetic field is generated by the non-combustion type flavor inhaling device 30, and magnetic flux is generated so as to penetrate each susceptor 316. Eddy current is generated in the susceptor 316, and the susceptor 316 generates heat to heat the tobacco filling 111. Then, an aerosol containing tobacco components is generated to be inhaled by the user.

Thus, according to this modification, when the tobacco stick 100C is inserted into the heating chamber 35 in a prescribed state, the susceptor 316 is arranged in a direction perpendicular to the magnetic flux generated by the coil 32. Therefore, the susceptor 316 can efficiently generate heat and heat the tobacco filling 111 efficiently, as in the above-described embodiment and modification.

It should be noted that the tobacco filling 111 in this modified example is adjusted to a shape that allows it to be filled between a plurality of susceptors 316 that are spaced 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.

A tobacco stick 100D shown in FIG. 14 has a sheet-like susceptor 416 folded in a zigzag (serpentine) cross section, and a plurality of flat regions are arranged with gaps between each other, and the tobacco filler 111 is placed in the gaps. be filled. The structure of the susceptor 416 is the same as that of the sheet-like susceptor 216 described above, except that the tobacco filler 111 is not fixed and that a predetermined gap is provided between the flat regions. For example, the sheet-shaped susceptor 416 may alternately repeat the step B of folding the susceptor 416 with the first surface 61A inside as shown in FIG. 12 and the step C of folding the susceptor 416 with the second surface 61B inside. As a result, the susceptor 416 is folded so as to meander when viewed in the axial direction. The

flat portions

6B, 6D, . . . 6P of the susceptor 416 are arranged perpendicular to the magnetic flux direction 41, and the

flat portions

6B, 6D, . . Tobacco fillers 111 such as shredded tobacco are filled between these

flat portions

6B, 6D, . . . 6H. When a fluctuating electromagnetic field is generated in the tobacco stick 100D by the non-combustion type flavor inhaling device 30, and magnetic flux is generated so as to penetrate the

flat portions

6B, 6D, . . . As a result, the susceptor 416 generates heat to heat the tobacco filling 111 and generate an aerosol containing tobacco components for inhalation by the user.

Thus, according to this modification, when the tobacco stick 100D is inserted into the heating chamber 35 in a prescribed state, the flat region of the susceptor 416 is oriented perpendicular to the magnetic flux generated by the coil 32. Because of this arrangement, the susceptor 416 can efficiently generate heat and heat the tobacco filling 111 efficiently, as in the above-described embodiment and modification. Further, in this modified example, the sheet-like susceptor 416 has a plurality of flat regions, and the flat regions are arranged substantially in the same direction. As a result, each of the plurality of flat regions of the sheet-like susceptor 416 efficiently generates heat, and the tobacco filler 111 can be efficiently heated. Furthermore, in this modification, the plurality of

flat portions

6B, 6D, . Therefore, according to this modified example, the susceptor 416 can heat the tobacco filling 111 evenly and uniformly, and can appropriately generate an aerosol.

<Second embodiment>
In this embodiment, the shape of the coil 32R is different from that of the above-described first embodiment, and the direction of the magnetic flux generated by the coil 32R is different. Accordingly, the orientation of the susceptor 316 with which the tobacco stick 100E is filled is different. Further, in the present embodiment, the tobacco filling material 111 and the susceptor 316 are separated from each other, and the tobacco rod portion 110 is filled with the tobacco filling material 111 and the susceptor 316 as in the fourth modification. Since other configurations are the same as those of the above-described embodiment, repetitive description of the same elements will be omitted.

15 is a schematic configuration diagram of a non-combustion type flavor inhaling device 30 according to the second embodiment, FIG. 16 is a perspective view of a coil 32R, and FIG. 17 is a schematic configuration diagram of a tobacco stick 100E according to the second embodiment. is. The non-combustion type flavor inhalation device 30 of this embodiment has a cylindrical coil 32R around the heating chamber 35. As 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.

In this embodiment, the tobacco stick 100E has a plurality of susceptors 316 inside the tobacco rod portion 110. As shown in FIG. The susceptor 316 has a flat surface whose width dimension in the direction orthogonal to the axial direction (insertion/removal direction) is set larger than the thickness dimension of the susceptor 316 in the direction parallel to the axial direction, and the susceptor 316 is formed in a plate shape. ing. These plate-shaped susceptors 316 are arranged so that their flat surfaces are perpendicular to the magnetic flux direction 42 when the tobacco rod portion 110 is inserted into the heating chamber 35 in a prescribed state. That is, in this embodiment, since the direction 42 of the magnetic flux generated by the coil 32R is the axial direction of the tobacco stick 100E, the flat surfaces of the plurality of susceptors 316 filled in the tobacco stick 100E are in the axial direction (Z direction). oriented perpendicular to the In the example of FIG. 16, the flat surface of the susceptor 316 is arranged parallel to the XY plane. A plurality of susceptors 316 are arranged at intervals, and the tobacco filler 111 such as shredded tobacco is filled between the susceptors 316 .

When using the non-burning flavor inhaling system 200, the user inserts the tip side of the tobacco stick 100E into the heating chamber 35 of the non-burning flavor inhaling device 30. A coil 32R is arranged around the heating chamber 35 of the non-combustion type flavor inhaling device 30. As shown in FIG. Therefore, the tobacco rod portion 110 provided on the distal end side of the tobacco stick 100E is positioned within the fluctuating electromagnetic field generated by the coil 32 . Then, the fluctuating electromagnetic field generates an eddy current in the susceptor 116 filled in the tobacco rod portion 110, and the susceptor 316 generates heat due to this eddy current loss.

This heat generation causes the susceptor 116 to heat the tobacco filling 111 of the tobacco stick 100 to a temperature sufficient to form an aerosol. Aerosol generated by heating passes through the mouthpiece portion 120 and is inhaled by the user.

According to this embodiment, the susceptor 316 is arranged orthogonal to the magnetic flux direction 42 when the tobacco rod portion 110 is inserted into the heating chamber 35 in a prescribed state. Here, the susceptor 316 is set so that the width dimension of the flat surface in the direction perpendicular to the magnetic flux (X, Y directions) is set larger than the thickness dimension of the susceptor 316 in the direction parallel to the magnetic flux (Y direction). As a result, when the coil 32R generates a magnetic flux in a direction orthogonal to the flat surface of the susceptor 316 of the tobacco stick 100E, it is possible to secure a larger area for the magnetic flux to penetrate the susceptor 316 in the orthogonal direction. heat generation efficiency can be improved. This susceptor 316 can efficiently heat the tobacco filling 111 . Therefore, even if the susceptor 316 is made of a material having a low magnetic permeability, the tobacco filling 111 can be sufficiently heated, the range of material choices is widened, and material procurement can be facilitated. Further, in this embodiment, a plurality of plate-shaped susceptors 316 are arranged in the tobacco rod portion 110, and the flat surfaces of the susceptors 316 are arranged in the same direction. As a result, the plurality of susceptors 316 can efficiently generate heat, and the tobacco filling 111 can be efficiently heated.

30... non-combustion type flavor suction device 31...

housing

32, 32R... 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 , 211 cigarette filler 112

wrapping paper

116, 216, 316, 416 susceptor 120 mouthpiece portion 121 cooling segment 122 filter segment 130

tipping paper

131 , 331... Match mark 200... Non-combustion 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 body has a plate-like or sheet-like shape, and has a flat surface on at least a part of its surface. Arranged so as to be substantially orthogonal to the magnetic flux, 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. stick.
The rod portion is inserted into and removed from the heating chamber with the insertion and removal direction as a longitudinal direction, the heating body is plate-shaped, and the induction coil is configured to generate a magnetic flux in a direction orthogonal to the insertion and removal direction. has been
2. The flavor stick according to claim 1, wherein said flat surface is arranged along the longitudinal direction of said rod portion.
The flavor stick according to claim 2, wherein a plurality of said plate-shaped heating bodies are arranged in said rod portion, and said flat surfaces of said heating bodies are arranged in the same direction.
The flavor stick according to claim 1, wherein the heating body is in the form of a sheet, and includes a plurality of flat regions forming the flat surface and curved regions connecting the flat regions.
The rod portion is configured to be inserted into and removed from the heating chamber with the longitudinal direction being the insertion/removal direction, and the induction coil to generate a magnetic flux in a direction perpendicular to the insertion/removal direction,
5. The flavor stick according to claim 4, wherein the flat region of the sheet-like heating body is arranged along the longitudinal direction of the rod portion.
The flavor stick according to any one of claims 1 to 5, 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 6, wherein the magnetic permeability of said heating element is less than 1 x 10-3 .
In the heating body, a ratio of a first dimension in a first direction of the surface to a second dimension in a second direction orthogonal to the first direction of the surface is such that the first dimension is 1.0. 8. The flavor stick according to any one of claims 1 to 7, wherein the second dimension is set to be 0.25 to 1.0 when the second dimension is 0.25 to 1.0.
A flavor stick according to any one of claims 1 to 8, 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;
Magnetic flux is generated in a direction substantially orthogonal to the flat surface of the heating body for the flavor sticks arranged around the heating chamber and inserted into the heating chamber in a prescribed state, thereby heating the heating body by induction. an induction coil that
comprising
Non-combustion flavor suction system.
the heating chamber extends along the insertion/extraction direction of the flavor stick;
10. The non-combustion type according to claim 9, wherein the induction coil comprises 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. Flavor suction system.