WO2022172386A1

WO2022172386A1 - Heat-not-burn tobacco product and heat-not-burn tobacco stick

Info

Publication number: WO2022172386A1
Application number: PCT/JP2021/005150
Authority: WO
Inventors: 学山田; 康信井上; 干城隅井
Original assignee: 日本たばこ産業株式会社
Priority date: 2021-02-12
Filing date: 2021-02-12
Publication date: 2022-08-18
Also published as: KR20230132501A; EP4292451A1; WO2022172527A1; JPWO2022172386A1; KR20230132500A; JPWO2022172527A1; US20230380491A1; US20230380493A1; CN116963621A; CN116867385A; EP4292449A1

Abstract

Provided is a heat-not-burn tobacco product comprising an electric heating device and a tobacco stick, wherein: the tobacco stick is provided with a tobacco rod part having a tobacco filling that includes cut tobacco and a mouthpiece coaxially connected to the tobacco rod part; and the electric heating device has a hollow tube heater defined so as to form therein a heating chamber. The hollow tube heater has a compression cylinder part that compresses the tobacco rod part from the outer circumferential side when the tobacco stick is inserted, and a heating wall part that is formed by at least a part of the compression cylinder part and that heats the tobacco rod part from the outer circumferential side. The tobacco filling is wrapped with rolling paper with the cut tobacco in a randomly oriented state. The cross-sectional area of the tobacco rod part is defined so as to be greater than the cross-sectional area of the inner space of the compression cylinder part and so that the tobacco rod part is compressed by the inner wall of the compression cylinder part when inserted into the compression cylinder part.

Description

Non-combustion heating tobacco products and non-combustion heating tobacco sticks

The present invention relates to non-combustion heating tobacco products and non-combustion heating tobacco sticks.

An electrically heated device having a heater assembly, a battery unit for powering the heater assembly, a control unit for controlling a heating element of the heater assembly, etc., and a non-combustion heated tobacco stick for use with the electrically heated device. Non-combustion heated tobacco products are known (see, for example, US Pat. Non-combustion heated tobacco sticks are, for example, tobacco fillings containing tobacco raw materials (e.g., tobacco cuts, tobacco granules, tobacco sheet moldings, etc.) and aerosol-generating sources (glycerin, propylene glycol, etc.), and the tobacco fillings. and a mouthpiece coaxially connected to the tobacco rod by being wrapped with tipping paper together with the tobacco rod.

Also, when using an electrically heated tobacco product, a non-combustion heated tobacco stick is inserted into the chamber of the heater assembly in the electrically heated device through the insertion port, and the heater assembly is heated by power supply from the battery unit. heat the element. As a result, the tobacco filling of the tobacco rod is heated, an aerosol is generated from the aerosol generating source contained in the tobacco filling, and the flavor component is delivered into the mouth.

WO2017-198838 Japanese Patent No. 5877618

As a heating method for a non-combustion heating tobacco stick by an electric heating device, the outer heating is performed by heating the tobacco rod from the outer peripheral side by a heating part in which a heating element is arranged on the inner wall surface of a hollow tube that defines the chamber of the heater assembly. method is known. In such an external heating type electric heating device, it is important to improve the heating efficiency by ensuring the contact state between the tobacco rod portion inserted in the chamber and the heating portion, thereby increasing the delivery amount of the flavor component. important from

On the other hand, a tobacco sheet is adopted as the tobacco raw material contained in the tobacco filler of the tobacco rod portion of the non-combustion heating tobacco stick, and the tobacco rod portion is formed by wrapping the tobacco sheet folded in a gathered shape with wrapping paper. Sometimes. In this type of tobacco rod portion, folds of the tobacco sheet are defined along the axial direction of the tobacco rod portion, so that a large number of aerosol flow paths are formed between the gathered-folded tobacco sheets along the axial direction of the tobacco rod portion. It is formed.

However, in non-combustion heating tobacco sticks using gathered tobacco sheets as tobacco raw materials, the cross-sectional areas of individual aerosol channels formed between the gathered tobacco sheets are large. Therefore, for example, from the viewpoint of increasing the delivery amount of flavor components in a non-combustion heating tobacco stick, if a specification is adopted in which the tobacco rod portion inserted into the chamber on the device side is compressed from the outer peripheral side by the inner wall surface of the chamber, the chamber When the tobacco rod portion is inserted into the airflow passage, the aerosol flow path formed as a relatively large gap may be crushed, resulting in a large change in airflow resistance during inhalation. Also, since it is difficult to control the position where the aerosol flow path is arranged in the cross section when manufacturing the tobacco rod portion, the ventilation resistance during suction varies for each non-combustion heating tobacco stick. is likely to occur.

The present invention has been made in view of the above-described circumstances, and its purpose is to secure the delivery amount of flavor components in a non-combustion heating tobacco stick at the time of inhalation and to suppress variations in ventilation resistance. is to provide

The technology according to the present invention is a non-combustion heating tobacco product comprising an electrically heating device and a non-combustion heating tobacco stick used with the electrical heating device, the non-combustion heating tobacco stick comprising: A tobacco rod portion having a tobacco filler containing tobacco shreds and a wrapping paper around which the tobacco filler is wrapped, and a mouth coaxially connected to the tobacco rod portion by being wrapped with chipping paper together with the tobacco rod portion. a piece portion, the electrically heated device having a hollow tube heater defined to form a heating chamber therein into which the non-combustion heated tobacco stick can be inserted; is formed by a compression tubular portion for compressing the tobacco rod portion from the outer peripheral side when the non-combustion heating tobacco stick is inserted, and at least a part of the compression tubular portion, and compresses the tobacco rod portion from the outer peripheral side. a heating wall portion for heating, wherein the tobacco filling is wrapped by the wrapping paper in a state in which the tobacco shreds are randomly oriented, and the tobacco rod portion has a cross-sectional area equal to that of the compression tube. It is defined so that the tobacco rod portion inserted into the compression tube portion is compressed by the inner wall surface of the compression tube portion.

Here, the cross-sectional area of the tobacco rod portion may be defined so that the cross-sectional area after insertion into the compression tube portion is 60% or more and 99% or less of the cross-sectional area before insertion.

In addition, the compression tube portion includes a pair of opposing sandwiching walls extending along the axial direction of the compression tube portion, and the tobacco rod portion inserted into the compression tube portion is positioned inside the sandwiching wall portion. It may be configured to be compressed by a wall surface.

In addition, the inner wall surfaces of the pair of holding wall portions may be arranged to face each other in parallel.

Also, the diameter of the tobacco rod portion may be defined to be 105% or more and 200% or less of the distance between the inner wall surfaces of the pair of holding wall portions.

Further, in the non-combustion heating tobacco product, when the non-combustion heating tobacco stick is inserted to a specified position in the heating chamber, the entire tobacco rod portion and a part of the mouthpiece portion are in the compression tube portion. It may be configured to be compressed by the inner wall surface.

Further, the cross-sectional area of the mouthpiece portion may be defined so that the cross-sectional area after insertion into the compression tube portion is 60% or more and 99% or less of the cross-sectional area before insertion.

In addition, the hollow tube may further include an insertion tube portion positioned on the insertion port side, and the hollow cross-sectional area of the insertion tube portion may be relatively larger than the cross-sectional area of the tobacco rod portion.

The present invention can also be specified as a non-combustion heated tobacco stick used with an electrically heated device. That is, the present invention is used with an electrically heated device, and is heated from the outer peripheral side while being inserted into a hollow tube heater defined to form a heating chamber inside the electrically heated device. A combustion heating tobacco stick, comprising: a tobacco rod portion having a tobacco filling containing tobacco cuts and a wrapping paper for wrapping the tobacco filling; a mouthpiece portion coaxially connected to the rod portion, wherein the tobacco filling is wrapped by the wrapping paper with the tobacco cuts randomly oriented, and the cross-sectional area of the tobacco rod portion is relatively larger than the cross-sectional area of the inner space of the compression tube portion of the hollow tube heater, which has a heating wall portion for heating the tobacco rod portion from the outer peripheral side. The inserted tobacco rod portion is defined to be compressed by the inner wall surface of the compression tube portion.

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 technology for ensuring the delivery amount of flavor components in non-combustion heating tobacco sticks when inhaled, and for suppressing variations in ventilation resistance.

1 is a perspective view of a tobacco stick according to an embodiment; FIG. FIG. 2 is a diagram illustrating the internal structure of the tobacco stick according to the embodiment. FIG. 3 is an external perspective view of the electric heating device according to the embodiment. FIG. 4 is a diagram illustrating the internal structure of the electrically heated device according to the embodiment. FIG. 5 is a perspective view of the hollow tube heater according to the embodiment. FIG. 6 is a schematic vertical cross-sectional view of the hollow tube heater according to the embodiment. FIG. 7 is an exploded view of the hollow tube heater according to the embodiment. FIG. 8 is a perspective view of a chamber tube according to an embodiment; FIG. 9 is a view of the heating chamber in the hollow tube heater according to the embodiment, viewed from the insertion port side. 10 is a perspective view of a plug member according to an embodiment; FIG. FIG. 11 is a cross-sectional view of the hollow tube heater shown in FIG. 6 at AA. FIG. 12 is a cross-sectional view of the hollow tube heater shown in FIG. 6 taken along the line BB. FIG. 13 is a diagram illustrating a state in which a tobacco stick is inserted to a prescribed position in the heating chamber of the electrically heated device according to the embodiment;

Here, embodiments of the non-combustion heating tobacco product and the non-combustion heating tobacco stick according to the present invention will be described based on the drawings. It should be noted that the dimensions, materials, shapes, relative arrangements, etc. of the components described in this embodiment are examples.

<Embodiment>
FIG. 1 is a perspective view of a non-combustion heating tobacco stick (hereinafter simply referred to as "tobacco stick") 100 according to an embodiment. FIG. 2 is a diagram illustrating the internal structure of the tobacco stick 100 according to the embodiment. The tobacco stick 100 has a structure suitable for use with the electrically heated device 1 described below, and the electrically heated device 1 and the tobacco stick 100 constitute a non-combustion heated tobacco product. When a non-combustion heated tobacco product is used, the tobacco stick 100 can be freely inserted into and pulled out of the heating chamber 60 through the insertion port of the electrically heated device 1 (indicated by reference numeral 5A in FIGS. 4, 6, etc.). .

The tobacco stick 100 according to the embodiment has a substantially cylindrical rod shape. In the example shown in FIGS. 1 and 2, tobacco stick 100 includes tobacco rod portion 110, 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 110 is arranged on the tip 102 side of the tobacco stick 100 . In the example shown in FIGS. 1 and 2, the tobacco stick 100 has a substantially constant diameter along its entire longitudinal length from the mouth end 101 to the tip 102 .

[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 such as an aluminum foil, or a composite material combining these can be used. For example, the tipping paper 130 may be made of a composite material in which metal foil is bonded 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, and may have, for example, a water resistance improver to improve it. 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 15 . 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 configuration of the tobacco rod portion 110 is not particularly limited, and may be a general configuration. For example, tobacco filling 111 wrapped with wrapping paper 112 can be used.

[Tobacco filling]
In this embodiment, the tobacco filling 111 is configured to include cut tobacco. The cut tobacco material contained in the tobacco filling 111 is not particularly limited, and known materials such as lamina and backbone can be used. Further, dried tobacco leaves are pulverized to have an average particle size of 20 μm or more and 200 μm or less to obtain pulverized tobacco, which is homogenized and processed into a sheet (hereinafter also simply referred to as a homogenized sheet). It can be chopped. Further, it may be a so-called strand type in which a homogenizing sheet having a length approximately equal to the longitudinal direction of the tobacco rod is chopped substantially horizontally to the longitudinal direction of the tobacco rod and filled into the tobacco rod. In addition, the width of the cut tobacco is preferably 0.5 mm or more and 2.0 mm or less for filling tobacco rod portion 110 . The content of dried tobacco leaves contained in the tobacco rod portion 110 is not particularly limited, but may be 200 mg/rod portion or more and 800 mg/rod portion or less, and may be 250 mg/rod portion or more and 600 mg/rod portion or less. is preferred. This range is particularly suitable for a tobacco rod portion 110 with a circumference of 22 mm and a length of 20 mm.

Various kinds of tobacco can be used for the tobacco leaves used for producing the cut tobacco and the homogenized sheet. Examples include yellow, burley, oriental, landrace, other Nicotiana-tabacum varieties, Nicotiana-Rustica varieties, and mixtures thereof. As for the mixture, the above varieties can be appropriately blended and used so as to obtain the desired taste. Details of the tobacco varieties are disclosed in "Tobacco Encyclopedia, Tobacco Research Center, March 31, 2009". There are a number of conventional methods for producing the homogenized sheet, that is, methods for pulverizing tobacco leaves and processing them into homogenized sheets. The first is a method of producing a papermaking sheet using a papermaking process. The second method is to mix pulverized tobacco leaves with an appropriate solvent such as water to homogenize the mixture, and then thinly cast the homogenized material on a metal plate or metal plate belt and dry it to produce a cast sheet. is. A third method is to prepare a rolled sheet by mixing a suitable solvent such as water with pulverized tobacco leaves, homogenizing the mixture, and extruding the mixture into a sheet. The types of the homogenizing sheet are disclosed in detail in "Encyclopedia of Tobacco, Tobacco Research Center, March 31, 2009".

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, relative to the total amount 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, dried tobacco leaves cut into pieces having a width of 0.5 mm or more and 2.0 mm or less may be used. In addition, when using a pulverized product of a homogenized sheet, dry tobacco leaves are pulverized to an average particle size of about 20 μm to 200 μm and homogenized. You may use the thing chopped into 0 mm or less.

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, para-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, Propenylguaetol, 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 filler 111 (for producing the tobacco rod portion 11), the length of one side can be about 12 mm to 70 mm, and the length of the other side is about 15 mm to 15 mm. 28 mm, 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 tobacco rod portion 110 configured as described above is wrapped by the wrapping paper 112 with the tobacco filler 111 randomly oriented in the tobacco shreds. That the tobacco cuts are randomly oriented means that the tobacco cuts are not wrapped by the wrapping paper 112 in a state of being oriented in a specific direction. In addition, the axial length of the tobacco rod portion 110 can be appropriately changed according to the size of the product, but is usually 10 mm or more, preferably 12 mm or more, more preferably 15 mm or more, and 18 mm or more. and is usually 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.

The cooling segment 121 is provided with ventilation 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.

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
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.

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 axial length of the cooling segment 121 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 or less. is more preferred. 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 15 mm or more and 35 mm or less, preferably 17.5 mm or more and 32.5 mm or less, and 20.0 mm. Above, it is more preferable to be 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.

Although the ventilation resistance per 120 mm of axial length of the filter segment 122 is not particularly limited, it 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 include, for example, menthol, spearmint, peppermint, fenugreek, cloves, medium-chain triglycerides (MCT), and the like. The flavoring agent can be menthol, or menthol and the like, or combinations thereof.
The filter media of the filter segments 122 may be flavored. 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. 1) 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.

<Electric heating device>
Next, the electrically heated device 1 used with the tobacco stick 100 will be described. The electric heating device 1 is a suction device for sucking a tobacco stick 100, and is combined with the tobacco stick 100 to constitute a non-combustion heating tobacco product. FIG. 3 is an external perspective view of the electrically heating device 1 according to the embodiment. The electrically heated device 1 includes, for example, an operation button (not shown) that can be switched between operation and non-operation by being operated by the user, and does not burn the tobacco filling 111 of the tobacco stick 100 during operation. Flavor components are released from the tobacco filling 111 by heating.

The electrically heated device 1 has a housing 11 for containing and protecting various internal components of the device 1 . Reference numeral 12 shown in FIG. 3 denotes a top panel portion of the housing 11 , reference numeral 13 denotes a bottom panel portion of the housing 11 , and reference numeral 14 denotes a side panel portion of the housing 11 . However, in this specification, references to the up, down, left, and right directions of the electric heating device 1 only refer to the relative positional relationships of the elements that make up the electric heating device 1 . The material forming the housing 11 is not particularly limited, and may be made of a plastic material (for example, glass-filled nylon formed by injection molding) or a metal material such as aluminum. Further, the shape, size, etc. of the housing 11 of the electrically heated device 1 are not particularly limited.

A slide-type opening/closing lid 15 is attached to the top panel portion 12 of the electric heating device 1 . The opening/closing lid 15 can open and close an insertion opening (indicated by reference numeral 5A in FIGS. 4 and 6, etc.) opening in the upper panel portion 12 by being slid by the user. The insertion port of the electrically heated device 1 is formed as a circular opening, and is configured to allow the tobacco stick 100 to be inserted and removed. In addition, the housing 11 is provided with an indicator 17 such as an LED that indicates the operating state of the electric heating device 1 to the user.

Next, the internal structure housed inside the housing 11 of the electrically heated device 1 will be described. FIG. 4 is a diagram illustrating the internal structure of the electrically heating device 1 according to the embodiment. In FIG. 4, illustration of some components accommodated in the housing 11 is omitted. As shown in FIG. 4, the housing 11 accommodates a heater unit 20, a controller 30, a power source 40, and the like. The position of each element accommodated in the housing 11, the range occupied in the housing, etc. are not particularly limited, and can be changed as appropriate.

The heater unit 20 is a unit having an electrically heated hollow tube heater 21 for heating the tobacco rod portion 110 of the tobacco stick 100 during operation. The power source 40 is a power source for supplying operating power to the hollow tube heater 21, the indicator 17, etc., and is electrically connected to these via electrical wiring. The power supply 40 can be configured by including, for example, a lithium ion battery, a nickel battery, an alkaline battery, or the like. The control unit 30 is a computer having a CPU, a memory, etc., and controls the operating state of the electric heating device 1 as a whole. The control unit 30 may be, for example, a microcontroller in which a CPU, memory, input/output circuit, timer circuit, etc. are mounted on an IC chip. When the electric heating device 1 is activated, the control section 30 supplies electric power from the power source 40 to the hollow tube heater 21 to perform heating control to heat the tobacco rod section 110 of the tobacco stick 100 by the hollow tube heater 21 .

The heater unit 20 includes a hollow tube heater 21 having a hollow tube shape defined to form a heating chamber into which the tobacco stick 100 can be inserted, and at least one heater on the outer peripheral side of the hollow tube heater 21. A thermal insulator 22 or the like is provided to cover the section. The thermal insulator 22 contributes to reducing heat transmitted from the heat generated by the operation of the hollow tube heater 21 to the outside of the electrically heated device 1 .

FIG. 5 is a perspective view of the hollow tube heater 21 according to the embodiment. FIG. 6 is a schematic vertical cross-sectional view of the hollow tube heater 21 according to the embodiment. FIG. 7 is an exploded view of the hollow tube heater 21 according to the embodiment. As shown in FIGS. 5 to 7, the hollow tube heater 21 in the heater unit 20 includes the insertion tube portion 5, the chamber tube 6, the plug member 7, and the like. A symbol CL shown in FIG. 6 is the central axis of the hollow tube heater 21 . Hereinafter, a section along the central axis CL of the hollow tube heater 21 will be referred to as a "longitudinal section", and a section perpendicular to the central axis CL will be referred to as a "transverse section".

The insertion cylinder part 5 of the hollow tube heater 21 is a sleeve member having a hollow cylindrical shape, and an opening end formed at the upper end thereof is formed as an insertion port 5A. The insertion port 5A is an opening for inserting the tobacco stick 100 into the hollow tube heater 21 (inside the heating chamber) so that it can be taken out.

FIG. 8 is a perspective view of the chamber tube 6 according to the embodiment. The chamber tube 6 is a bottomed hollow cylindrical member with an open top end 6A, and a hollow heating chamber 60 is formed inside. FIG. 9 is a view of the heating chamber 60 in the hollow tube heater 21 according to the embodiment, viewed from the insertion port 5A side.

The upper end 6A of the chamber tube 6 is connected to the lower end 5B of the insertion tube portion 5, whereby the insertion tube portion 5 and the chamber tube 6 are integrated. A bottom wall 64 is formed at the lower end of the chamber tube 6, and an opening 64A is formed in the center of the plane of the bottom wall 64. As shown in FIG.

The chamber tube 6 includes a connecting tube portion 61 located on the upper end 6A side, a narrowing tube portion 62 located below the connecting tube portion 61, and a compression tube portion 63 located below the narrowing tube portion 62. there is The upper end 6A of the connecting tubular portion 61 is provided with an annular flange extending outward in the radial direction of the connecting tubular portion 61, and the annular flange is coupled to the end face at the lower end 5B of the insertion tubular portion 5. . Further, the connection tube portion 61 of the chamber tube 6 has a substantially hollow cylindrical shape, and its inner diameter is equal to the inner diameter of the lower end 5B of the insertion tube portion 5, for example.

As shown in FIG. 8 and the like, the compression cylinder portion 63 of the chamber tube 6 is formed as a hollow cylinder having a substantially oval (elliptical) cross section. The constricted tubular portion 62 in the chamber tube 6 has a hollow cylindrical upper end connected to the connecting tubular portion 61, and a substantially oval (elliptical) tubular lower end connected to the compression tubular portion 63. ing. As described above, the narrowed tubular portion 62 of the chamber tube 6 in the present embodiment has a cross-sectional shape that gradually changes along the axial direction of the narrowed tubular portion 62 . More specifically, the constricted tubular portion 62 of the chamber tube 6 has a pair of constricted portions that gradually narrow toward the lower end side of the constricted tubular portion 62 at positions opposed to each other across the central axis of the chamber tube 6 . It has

wall portions

62A, 62A, and the cross-sectional shape of the constricted cylindrical portion 62 is continuously changed along the axial direction by the pair of constricted

wall portions

62A, 62A.

Next, the plug member 7 in the hollow tube heater 21 will be explained. As shown in FIGS. 5 and 6, the plug member 7 is a member attached to the bottom wall 64 of the chamber tube 6 (the compression tube portion 63). FIG. 10 is a perspective view of the plug member 7 according to the embodiment. The plug member 7 includes a body portion 71 positioned on the heating chamber 60 side along the inner surface of the bottom wall 64 when the plug member 7 is attached to the bottom wall 64 of the chamber tube 6 (the compression cylinder portion 63); and a pair of pedestal portions 73 projecting upward from the upper surface 71B of the body portion 71 . The body portion 71 has a size that allows it to be mounted inside the compression tube portion 63 . The protruding portion 72 of the plug member 7 has a stepped columnar shape, and the diameter of the base end portion 721 thereof is slightly smaller than the opening 64A of the bottom wall 64, so that it can be inserted through the opening 64A. there is When the plug member 7 is attached to the bottom wall 64 of the compression cylinder 63 , the protrusion 72 protrudes to the outside of the heating chamber 60 through the opening 64A of the bottom wall 64 .

A pair of pedestal portions 73 of the plug member 7 are arranged at intervals in the cross-sectional direction of the heating chamber 60, and a gap SP1 is formed therebetween. The upper surface of each pedestal portion 73 is positioned by contacting the tip 102 of the tobacco rod portion 110 when the tobacco stick 100 is inserted into the hollow tube heater 21 (inside the heating chamber 60) from the insertion port 5A. It is formed as a bottom surface 731 for use. The positioning bottom surface 731 of each pedestal 73 is flat and positioned at the same height within the heating chamber 60 . The tobacco stick 100 inserted into the heating chamber 60 is designed to be inserted to a specified position when the tip 102 of the tobacco rod portion 110 contacts the positioning bottom surface 731 of each pedestal portion 73 . That is, in the hollow tube heater 21 , the position (specified position) of the positioning bottom surface 731 of each pedestal 73 corresponds to the innermost position of the heating chamber 60 . With the tobacco stick 100 inserted to the deepest position in the heating chamber 60, the tip 102 of the tobacco rod portion 110 is placed so as to straddle the upper portion of the gap SP1 formed between the pair of pedestal portions 73. . When sucking the tobacco stick 10 using the electric heating device 1, the air that has flowed into the heating chamber 60 of the hollow tube heater 21 from the insertion opening 5A is heated by the inner wall surface of the hollow tube heater 21 and the tobacco stick 10. After being introduced to the bottom portion side of the heating chamber 60 through the gap SP1, it is introduced into the tobacco rod portion 110 from the tip 102 of the tobacco rod portion 110 through the gap SP1.

As shown in FIG. 6, the chamber tube 6 in this embodiment has a heater region RH formed in at least a part of the compression tube portion 63 . The heater region RH of the compression tube portion 63 is a heat generating region for heating at least the tobacco rod portion 110 of the tobacco stick 100 inserted into the heating chamber 60 from the outer peripheral side, and is provided with the heater element 23 that generates heat when energized. It is Note that the illustration of the heater element 23 is appropriately omitted in other drawings except FIG. The heater element 23 provided in the heater region RH is an element that generates heat by being supplied with operating power from the power source 40, and is not particularly limited. The heater region RH of the compression tube portion 63 is, for example, a metal tube such as stainless steel, and a metal thin film heater may be arranged along the outer peripheral surface of the metal tube. A metal thin film heater is a planar heat-generating heater that uses a metal thin film as a heating element and has flexibility. Further, in the heater region RH of the compression tube portion 63, a film heater may be arranged along the outer peripheral surface of the metal tube instead of the metal thin film heater. A film heater may, for example, have a structure in which a layer of electrically insulating material and a layer of heating tracks, which are an example of a heating element, are superimposed. Also, for example, the heater element 23 may have a structure in which a layer of heating tracks is arranged between two layers of electrically insulating material. The electrically insulating material can be for example polyimide and the heating track can be for example metal such as stainless steel. Also, the heater region RH of the compression tube portion 63 may contain a ceramic material. Examples of ceramic materials include alumina, aluminum nitride and silicon nitride ceramics, which may be laminated and sintered.

When the control unit 30 of the electric heating device 1 performs heating control of the hollow tube heater 21, the heater element installed on the heating wall portion RH of the hollow tube heater 21 is energized by power supply from the power supply 40. , the heating wall portion RH generates heat, and as a result, the tobacco rod portion 110 of the tobacco stick 100 inserted into the heating chamber 60 can be heated from the outer peripheral side.

In the present embodiment, the heating wall portion RH is formed over substantially the entire section in the axial direction of the compression cylinder portion 63 of the hollow tube heater 21 by arranging the heater element 23 over the section. . In the example shown in FIG. 6 , the heater element 23 is installed so as to cover the outer peripheral surface of the compression tube portion 63 from the upper end in the axial direction of the compression tube portion 63 to a position corresponding to the height of the positioning bottom surface 731 of the pedestal portion 73 . As a result, the heating wall portion RH is formed in the region. However, the installation mode of the heater element 23 provided in the compression tube portion 63 is not particularly limited. In other words, the heating wall portion RH may be formed over the entire length of the compression cylinder portion 63, or may be formed only in a section shorter than the range shown in FIG. Further, the heater element 23 in the compression tube portion 63 may not be provided on the outer peripheral side of the compression tube portion 63 . For example, the heater element 23 may be embedded inside the wall of the compression tube portion 63, or may be arranged on the inner peripheral side.

Here, FIG. 11 is a diagram showing a cross section (AA cross section) of the hollow tube heater 21 shown in FIG. 6 at the AA position. FIG. 12 is a diagram showing a cross section (BB cross section) at the BB position of the hollow tube heater 21 shown in FIG. The AA cross section of the hollow tube heater 21 corresponds to the cross section of the insertion tube portion 5, and the BB cross section corresponds to the cross section of the compression tube portion 63 in the chamber tube 6. FIG.

The compression tube portion 63 in the hollow tube heater 21 is configured to compress at least the tobacco rod portion 110 from the outer peripheral side when the tobacco stick 100 is inserted into the heating chamber 60 . Hereinafter, when simply referring to the diameter of the tobacco stick 100 (tobacco rod portion 110, mouthpiece portion 120), it means the diameter in the original state (before compression by the compression cylinder portion 63). If the diameter of the tobacco stick 100 (tobacco rod portion 110, mouthpiece portion 120) after being compressed by is intended, this shall be specified.

The insertion cylinder portion 5 of the hollow tube heater 21 has a hollow cross-sectional area relatively large compared to the cross-sectional area of the tobacco stick 100 (tobacco rod portion 110, mouthpiece portion 120). More specifically, the inner diameter of the insertion tube portion 5 is relatively larger than the diameter of the tobacco stick 100 (tobacco rod portion 110, mouthpiece portion 120). Reference numeral L1 shown in the AA cross section of FIG. 6 indicates the outer shape (outline) of the tobacco stick 100 in the cross section direction when it is inserted into the insertion tube portion 5 of the hollow tube heater 21 . As shown, a gap is formed between the inner wall surface 50 of the insertion tube portion 5 and the outline L1 of the tobacco stick 100 . With this configuration, the user can smoothly insert the tobacco stick 100 into the heating chamber 60 when inserting the tobacco stick 100 through the insertion opening 5A. Further, in a state in which the tobacco stick 100 is inserted into the heating chamber 60, the gap between the inner wall surface 50 of the insertion tube portion 5 and the tobacco stick 100 can be formed as an air flow path.

On the other hand, the compression tube portion 63 of the hollow tube heater 21 has an approximately oval (elliptical) tube shape as described above. Therefore, as shown in the cross-sectional view of the inner space taken along the line BB in FIG. 6, the inner space cross-section of the compression tube portion 63 is formed in a substantially oval shape (elliptical shape). The compression tube portion 63 includes a pair of opposed sandwiching

wall portions

631, 631 extending along the axial direction of the compression tube portion 63, and a pair of arcs connecting the ends of the sandwiching

wall portions

631, 631. It is formed by

walls

632 , 632 . Here, the inner wall surfaces 631A, 631A of the pair of holding

wall portions

631, 631 extend along the axial direction of the compression tube portion 63 and are arranged to face each other in parallel. The inner wall surfaces 632A, 632A of the pair of

arc wall portions

632, 632 also extend along the axial direction of the compression tube portion 63 and are arranged to face each other in parallel.

The distance between the inner wall surfaces 631A, 631A of the pair of holding

wall portions

631, 631 is referred to as the "holding wall-to-wall distance D1". The clamping wall-to-wall distance D1 is set to a dimension smaller than the diameter of the tobacco stick 100 (tobacco rod portion 110, mouthpiece portion 120). In the cross-sectional view taken along the line BB in FIG. 6, L2 indicates the outer shape (contour) of the tobacco stick 100 in the original shape in the cross-sectional direction. In the present embodiment, the cross-sectional area of the tobacco stick 100 (tobacco rod portion 110, mouthpiece portion 120) is relatively large compared to the internal hollow cross-sectional area of the compression cylinder portion 63, and the tobacco stick 100 is inserted into the compression cylinder portion 63. Tobacco stick 100 (tobacco rod portion 110 , mouthpiece portion 120 ) is defined to be compressed by the inner wall surface of compression cylinder portion 63 . More specifically, the distance D1 between the clamping wall surfaces of the pair of clamping

wall portions

631, 631 facing each other in the compression tube portion 63 is set to a dimension smaller than the diameter of the tobacco stick 100 (tobacco rod portion 110, mouthpiece portion 120). ing. Therefore, when the tobacco stick 100 is inserted into the compression tube portion 63 of the hollow tube heater 21, the tobacco stick 100 is sandwiched between the inner wall surfaces 631A and 631A of the pair of sandwiching

wall portions

631 and 631, so that the tobacco stick 100 is undergo compression. In this embodiment, when the tobacco stick 100 is inserted into the compression tube portion 63 of the hollow tube heater 21, the inner wall surfaces 632A, 632A of the pair of

arc wall portions

632, 632 and the peripheral surface of the tobacco stick 100 However, the inner wall surfaces 632</b>A, 632</b>A may be in contact with the peripheral surface of the tobacco stick 100 .

The distance D1 between the clamping wall surfaces of the compression tube portion 63 is substantially the same as the minor axis dimension of the hollow cross-section of the compression tube portion 63 having an approximately oval (elliptical) shape. In addition, the long axis dimension of the hollow cross section of the compression tube portion 63 is not particularly limited. As an example, in the present embodiment, the longitudinal dimension of the hollow cross-section of the compression tube portion 63 is equal to the diameter of the tobacco stick 100 (tobacco rod portion 110, mouthpiece portion 120). However, the long axis dimension of the hollow cross section of the compression tube portion 63 may be set smaller than the diameter of the tobacco stick 100 (tobacco rod portion 110, mouthpiece portion 120), or may It may be set to dimensions.

FIG. 14 is a diagram illustrating a state in which the tobacco stick 100 is inserted into the heating chamber 60 of the electrically heated device 1 according to the embodiment to a specified position. As shown in FIG. 14 , the tobacco stick 100 inserted to a prescribed position in the heating chamber 60 is positioned such that the tip 102 of the tobacco rod portion 110 is positioned on the bottom surface 731 for positioning the pedestal portion 73 of the hollow tube heater 21 , that is, the heating chamber 60 . It is positioned in contact with the bottom surface. Further, as shown in FIG. 14, in a state where the tobacco stick 100 is inserted to the specified position (positioning bottom surface 731) of the heating chamber 60, the position (height ) matches the position (height) of the insertion port 5A.

Further, the axial length of the compression cylinder portion 63 of the hollow tube heater 21 from the upper end of the compression cylinder portion 63 to the positioning bottom surface 731 of the pedestal portion 73 is greater than the length dimension of the tobacco rod portion 110 . Therefore, when the tobacco stick 100 is inserted to the specified position of the heating chamber 60 in the hollow tube heater 21 , the whole tobacco rod portion 110 and part of the mouthpiece portion 120 are inserted into the compression tube portion 63 . As a result, the entire tobacco rod portion 110 and part of the mouthpiece portion 120 are sandwiched between the inner wall surfaces 631A, 631A of the pair of sandwiching

wall portions

631, 631, thereby compressing them from the outer peripheral side. .

Then, when the user performs a predetermined ON operation on the operation button of the electric heating device 1, the control unit 30 starts power supply from the power supply 40 to the hollow tube heater 21, and the tobacco rod portion of the tobacco stick 100 is turned on. Heating control for heating 110 is started. When the heating control is started, the heater element 23 installed in the heating wall portion RH of the compression tube portion 63 in the hollow tube heater 21 is energized, thereby generating heat in the heating wall portion RH. As a result, the tobacco filler 111 contained in the tobacco rod portion 110 of the tobacco stick 100 can be heated without being burned, and vapor containing the aerosol-generating substrate and the tobacco flavor component can be generated.

The compression cylinder portion 63 of the hollow tube heater 21 according to the present embodiment is formed so that the entire area in the axial direction is formed as the heating wall portion RH. Therefore, when the hollow tube heater 21 is activated, the tobacco rod portion 110 can be heated while being compressed by the compression tube portion 63 (heating wall portion RH). By compressing and heating the tobacco rod portion 110 from the outer peripheral side in this manner, the heat generated by the heating wall portion RH (heater element 23 ) can be efficiently transmitted to the tobacco filler 111 of the tobacco rod portion 110 . As a result, the tobacco filler 111 of the tobacco rod portion 110 is efficiently heated, thereby increasing the delivery amount of the aerosol and flavor component.

Further, the tobacco rod portion 110 of the tobacco stick 100 is wrapped with the wrapping paper 112 with the tobacco filler 111 randomly oriented. Therefore, the tobacco pieces are uniformly distributed in the cross section of the tobacco rod portion 110, and the gaps between the tobacco pieces can be reduced. As a result, even if the tobacco rod portion 110 is compressed from the outer peripheral side as the tobacco rod portion 110 is inserted into the compression cylinder portion 63, it is possible to suppress a large change in airflow resistance during suction. In other words, the airflow resistance during sucking is less likely to vary among the tobacco sticks 100 , which contributes to ensuring stable quality of the flavor and taste of the tobacco sticks 100 . In other words, according to the tobacco stick 100 of the present embodiment and the non-combustion heating tobacco product having the same, it is possible to ensure the delivery amount of the flavor component of the tobacco stick 100 and to suppress the variation in airflow resistance.

In addition, the cross-sectional area of the tobacco rod portion 110 in this embodiment is defined so that the cross-sectional area after insertion into the compression tube portion 63 of the electrically heated device 1 is 60% or more and 99% or less of the cross-sectional area before insertion. It is more preferable that the ratio is defined to be 80% or more and 98% or less. In addition, the diameter of the tobacco rod portion 110 is preferably defined to be 105% or more and 200% or less of the distance between the inner wall surfaces 631A, 631A of the pair of holding

wall portions

631, 631, and preferably 109% or more. It is more preferable that the dimension is defined to be 140% or less. According to these, when the hollow tube heater 21 in the electric heating device 1 is activated, the heat generated by the heating wall portion RH (heater element 23) is more efficiently transmitted to the tobacco filler 111 of the tobacco rod portion 110. , the tobacco filling 111 can be heated more efficiently. Further, when the cross-sectional area of the tobacco rod portion 110 after being inserted into the compression tube portion 63 in the electrically heated device 1 is less than 60% of the cross-sectional area before insertion, the tobacco rod portion 110 is may be over-compressed. As a result, the wrapping paper 112 may be torn when being inserted into the compression tube portion 63, or the ventilation resistance of the tobacco rod portion 110 may become excessively large, making suction difficult.

The vapor containing the aerosol-generating base material and the tobacco flavoring component generated in the tobacco rod portion 110 when the hollow tube heater 21 is activated flows from the tobacco rod portion 110 into the cooling segment 121 of the mouthpiece portion 120 and passes through. It is cooled by contact with air entrained within the cavity of cooling segment 121 through pores 103 . In this way, the temperature of the components and air flowing from the tobacco rod portion 110 can be reduced. The vapor of the aerosol-generating substrate is then cooled in the cooling segment 121 to liquefy and promote aerosol generation. After passing through the filter segment 122, the aerosol containing the flavor component is sucked into the oral cavity from the mouthpiece end 101. As shown in FIG.

As described above, with the tobacco stick 100 inserted to the specified position in the heating chamber 60, the entire tobacco rod portion 110 and a portion of the mouthpiece portion 120 (cooling segment 121) are aligned with the inner wall surfaces of the compression cylinder portion 63 (a pair of It is configured to be compressed by the inner wall surfaces 631A, 631A) of the holding

wall portions

631, 631. When the hollow tube heater 21 is activated, not only the tobacco rod portion 110 of the tobacco stick 100 but also the mouthpiece portion 120 (cooling segment 121) of the tobacco stick 100 is compressed by the inner wall surface of the compression cylinder portion 63 and heated. It is possible to obtain the effect that vapor and aerosol are less likely to adhere to the inner wall of the piece portion 120 (cooling segment 121). In addition, the cross-sectional area of the mouthpiece portion 120 is preferably defined so that the cross-sectional area after insertion into the compression tube portion 63 is 60% or more and 99% or less of the cross-sectional area before insertion, and 80% or more and 98%. % or less is more preferable. As a result, the effect of suppressing adhesion of vapor or aerosol described above can be obtained more remarkably. Further, when the cross-sectional area of the mouthpiece portion 120 after insertion into the compression cylinder portion 63 in the electrically heated device 1 is less than 60% of the cross-sectional area before insertion, the mouthpiece portion 120 is may be over-compressed. As a result, there is a risk that the mouthpiece portion 120 will be damaged when it is inserted into the compression cylinder portion 63 . Conversely, if the cross-sectional area of the mouthpiece portion 120 after being inserted into the compression cylinder portion 63 exceeds 99% of the cross-sectional area before insertion, the adhesion between the mouthpiece portion 120 and the hollow tube heater 21 is reduced. , there is a possibility that the effect of making it difficult for vapor or aerosol to adhere to the inner wall of the mouthpiece portion 120 is not sufficiently obtained.

Further, when the tobacco stick 100 is inserted into the heating chamber 60 of the hollow tube heater 21 in the electric heating device 1, it is heated while receiving resistance due to contact with the pair of clamping

wall portions

631, 631 in the compression tube portion 63. It is inserted up to the prescribed position (bottom surface 731 for positioning) of the chamber 60 . That is, in the present embodiment, insertion resistance is generated due to contact between the holding

walls

631 and 631 before the tip 102 of the tobacco stick 100 comes into contact with the positioning bottom surface 731 of the heating chamber 60. It becomes difficult to grasp the moment when the tip 102 of the stick 100 comes into contact with the positioning bottom surface 731 of the heating chamber 60 from the change in the insertion resistance of the tobacco stick 100 .

Tobacco stick 100, on the other hand, is provided in mouthpiece portion 120 (cooling segment 121) in a state where tip end 102 of tobacco rod portion 110 is inserted to a specified position (positioning bottom surface 731) of heating chamber 60. The position (height) of the pores 103 is defined to match the position (height) of the insertion port 5A of the heating chamber 60 . As a result, the user can stop the insertion operation based on the relative position (height) between the position (height) of the ventilation hole 103 and the position (height) of the insertion port 5A when the tobacco stick 100 is inserted into the heating chamber 60. Time can be easily grasped visually. In other words, when the tobacco stick 100 is inserted into the heating chamber 60, the position (height) of the vent hole 103 is used as a mark to check that the position (height) of the vent hole 103 matches the position (height) of the insertion port 5A. When visually confirmed, the moment when the tip 102 of the tobacco stick 100 comes into contact with the positioning bottom surface 731 of the heating chamber 60 can be grasped without depending on the change in insertion resistance of the tobacco stick 100 .

As a result, when inserting the tobacco stick 100 into the hollow tube heater 21 of the electric heating device 1, the tobacco stick 100 is simply inserted until the position of the air hole 103 in the tobacco stick 100 matches the height of the insertion opening 5A. , the tobacco stick 100 can be accurately inserted to the specified position. Then, since the timing at which the tobacco stick 100 is inserted into the specified position can be properly grasped, even though the tip 102 of the tobacco stick 100 abuts against the positioning bottom surface 731 of the heating chamber 60, from that state, Furthermore, any attempt to push the tobacco stick 100 into the heating chamber 60 can be obviated. As a result, it is possible to prevent the tobacco stick 100 from buckling in the middle or collapsing in the axial direction. In addition, when inserting the tobacco stick 100 into the heating chamber 60 of the hollow tube heater 21, the tip 102 of the tobacco stick 100 heats the insertion resistance due to the contact between the tobacco stick 100 and the clamping

walls

631, 631. It is also possible to prevent the insertion operation of the tobacco stick 100 from being stopped short of the prescribed position by mistakenly abutting on the bottom surface 731 for positioning of the chamber 60 .

In addition, the ventilation hole 103 for introducing external air to the cooling segment 121 of the mouthpiece part 120 is positioned upstream of the cooling segment 121 (tobacco rod part 110 side) so that the tobacco stick 100 is heated when sucked. The cooling effect of the vapor of the volatile components released from the tobacco filling 111 that has been removed is great. On the other hand, if the vent hole 103 is positioned inside the heating chamber 60 (the area below the insertion port 5A and surrounded by the wall surface of the hollow tube heater 21) when the tobacco stick 100 is sucked, the external air is passed through the vent hole 103 during sucking. It becomes difficult to smoothly introduce air into the mouthpiece portion 120 (cooling segment 121). On the other hand, in the tobacco stick 100 of the present embodiment, when the tobacco stick 100 is completely inserted to the specified position (positioning bottom surface 731) of the heating chamber 60, the ventilation hole of the mouthpiece portion 120 (cooling segment 121) is opened. Since the position (height) of 103 is configured to match the position (height) of the insertion port 5A of the heating chamber 60, the cooling effect of the cooling segment 121 at the time of suction and the efficiency of taking in outside air through the ventilation hole 103 are improved. can be made compatible. In other words, from the viewpoint of achieving both the cooling effect of the cooling segment 121 during sucking and the efficiency of taking in outside air through the ventilation holes 103, the position of the ventilation holes 103 in the tobacco stick 100 and the insertion depth of the heating chamber 60 are optimally positioned relative to each other. relationship can be defined.

Furthermore, the tobacco stick 100 in this embodiment has a lip release region R1 (see FIGS. 1, 14, etc.) positioned between the mouthpiece end 101 of the mouthpiece portion 120 and the air vent 103. The outer surface is covered with a lip release material. In the present embodiment, the tip 102 of the tobacco rod portion 110 (tobacco stick 100) is positioned at the prescribed position (positioning bottom surface 731, innermost position) of the heating chamber 60 in the lip release material placement region R1 where the lip release material is placed. The region is defined as a region located at least on the side of the insertion port 5A from the heating wall portion RH of the compression cylinder portion 63 when the compression cylinder portion 63 is inserted up to the maximum. According to this, when the heating wall portion RH of the compression tube portion 63 is heated with the operation of the hollow tube heater 21 in the electrically heated device 1, the lip release material in the lip release material placement region R1 of the tobacco stick 100 is released. Direct heating by the heating wall portion RH can be suppressed. As a result, it is possible to suppress the release of components that may affect the flavor and taste of the tobacco stick 100 from the lip release material. In this embodiment, in particular, the lip release material placement region R1 is defined as a region located between the mouthpiece end 101 of the mouthpiece portion 120 and the vent hole 103 . As described above, when the tip 102 of the tobacco stick 100 is inserted into the heating chamber 60 to the specified position (the positioning bottom surface 731, the deepest position), the ventilation hole 103 of the mouthpiece portion 120 is the insertion opening of the heating chamber 60. It is defined to match the position (height) of 5A. Therefore, by setting the range of the lip release material arrangement region R1 in the tobacco stick 100 as described above, when the tobacco stick 100 is inserted to the innermost position of the heating chamber 60, the lip release material arrangement region R1 is compressed into the compression tube. Compared to the heating wall portion RH of the portion 63, it can be positioned closer to the insertion port 5A side.

As described above, the embodiments according to the present invention have been described, but each configuration and combination thereof in the embodiments are only examples, and additions and omissions of configurations may be made as appropriate without departing from the gist of the present invention. , substitutions, and other modifications are possible. For example, if the compression tube portion 63 in the hollow tube heater 21 of the electric heating device 1 has a relatively small cross-sectional area compared to the cross-sectional area of the tobacco stick 100, its specific aspect is not particularly limited. Therefore, in the above-described embodiment, the compression tube portion 63 includes a pair of sandwiching

wall portions

631, 631 facing each other in parallel along the axial direction. A configuration may be adopted in which the tobacco stick 100 inserted into the compression tube portion 63 is compressed from the outer peripheral side by sandwiching the tobacco stick 100 between parallel wall portions.

Also, the compression tube portion 63 in the hollow tube heater 21 may be a cylinder having an inner diameter smaller than the diameter of the tobacco stick 100 . In this case, the constricted tubular portion 62 positioned between the connecting tubular portion 61 and the compression tubular portion 63 in the chamber pipe 6 is arranged from the upper end side connected to the connecting tubular portion 61 to the lower end side connected to the compression tubular portion 63 . The inner diameter may be gradually reduced in a tapered shape toward the . In any of the above modes, the inner wall surface of the compression cylinder portion 63 can compress the tobacco stick 100 from the outer peripheral side, and the compression heating of the tobacco stick 100 can be performed when the hollow tube heater 21 is activated.

REFERENCE SIGNS LIST 1 Electric heating device 5 Insertion cylinder 6 Chamber tube 11 Housing 20 Heater unit 21 Hollow tube heater 5A Insertion opening 60 Heating chamber 61... Connecting cylinder part 62... Narrowing cylinder part 63... Compression cylinder part RH... Heating wall part 100... Tobacco stick 103... Air vent 110... Tobacco rod part 120 ... Mouthpiece portion 121 ... Cooling segment 122 ... Filter segment 130 ... Chip paper 631 ... Clamping wall portion

Claims

A non-combustion-heated tobacco product comprising an electrically-heated device and a non-combustion-heated tobacco stick for use with the electrically-heated device,
The non-combustion heated tobacco stick is
a tobacco rod portion having a tobacco filler containing tobacco shreds and a wrapping paper around which the tobacco filler is wrapped;
a mouthpiece portion coaxially connected to the tobacco rod portion by being wrapped with tip paper together with the tobacco rod portion;
with
The electrically heated device has a hollow tube heater defined to form a heating chamber therein into which the non-combustion heated tobacco stick can be inserted;
The hollow tube heater is
a compression tube portion for compressing the tobacco rod portion from the outer peripheral side when the non-combustion heating tobacco stick is inserted;
a heating wall portion formed by at least a portion of the compression tube portion for heating the tobacco rod portion from the outer peripheral side;
has
The tobacco filling is wrapped by the wrapping paper with the tobacco cuts randomly oriented,
The cross-sectional area of the tobacco rod portion is relatively large compared to the internal cross-sectional area of the compression tube portion, and the tobacco rod portion inserted into the compression tube portion is compressed by the inner wall surface of the compression tube portion. is defined as
Non-combustion heated tobacco products.
2. The non-combustion heating according to claim 1, wherein the cross-sectional area of the tobacco rod portion after insertion into the compression tube portion is 60% or more and 99% or less of the cross-sectional area before insertion. formula tobacco products.
The compression tube portion includes a pair of opposing sandwiching walls extending along the axial direction of the compression tube portion, and the tobacco rod portion inserted into the compression tube portion is held by the inner wall surface of the sandwiching wall portion. 3. The non-combustion heated tobacco product of claim 1 or 2, which is compressed.
The non-combustion heating tobacco product according to claim 3, wherein the inner wall surfaces of the pair of holding wall portions are arranged in parallel and face each other.
The non-combustion heating tobacco product according to claim 4, wherein the diameter of the tobacco rod portion is defined to be 105% or more and 200% or less of the distance between the inner wall surfaces of the pair of holding wall portions.
2. The entire tobacco rod portion and a portion of the mouthpiece portion are compressed by the inner wall surface of the compression tube portion in a state where the non-combustion heating tobacco stick is inserted to a specified position in the heating chamber. 6. The non-combustion heated tobacco product according to any one of items 1 to 5.
7. The non-combustion heating according to claim 6, wherein the cross-sectional area of the mouthpiece portion is defined so that the cross-sectional area after insertion into the compression tube portion is 60% or more and 99% or less of the cross-sectional area before insertion. formula tobacco products.
The hollow tube further includes an insertion tube portion located on the insertion port side,
The inner hollow cross-sectional area of the insertion tube portion is relatively large compared to the cross-sectional area of the tobacco rod portion,
8. A non-combustion heated tobacco product according to any one of claims 1-7.
A non-combustion heated tobacco stick that is used with an electrically heated device and is heated from the outer periphery while being inserted into a hollow tube heater defined inside to form a heating chamber of the electrically heated device. There is
a tobacco rod portion having a tobacco filler containing tobacco shreds and a wrapping paper around which the tobacco filler is wrapped;
a mouthpiece portion coaxially connected to the tobacco rod portion by being wrapped with tip paper together with the tobacco rod portion;
with
The tobacco filling is wrapped by the wrapping paper with the tobacco cuts randomly oriented,
The cross-sectional area of the tobacco rod portion is relative to the hollow cross-sectional area of the compression tube portion of the hollow tube heater, which has a heating wall portion for heating the tobacco rod portion from the outer peripheral side. is relatively large, and the tobacco rod portion inserted into the compression cylinder portion is defined to be compressed by the inner wall surface of the compression cylinder portion,
Non-combustion heated tobacco stick.
10. The non-combustion heating according to claim 9, wherein the cross-sectional area of the tobacco rod portion after insertion into the compression tube portion is 60% or more and 99% or less of the cross-sectional area before insertion. formula cigarette stick.
The length of the tobacco rod is such that when the non-combustion heating tobacco stick is inserted up to a specified position in the heating chamber, the entire tobacco rod and a part of the mouthpiece are longer than the compression cylinder. 11. The non-combustion heating tobacco stick according to claim 9 or 10, which is defined to be compressed by the inner wall surface.
12. The non-combustion heating according to claim 11, wherein the cross-sectional area of the mouthpiece portion is defined so that the cross-sectional area after insertion into the compression cylinder portion is 60% or more and 99% or less of the cross-sectional area before insertion. formula cigarette stick.