WO2022264244A1 - Tobacco product - Google Patents

Abstract

A tobacco product comprising an atomization section, and a raw material holding section into which vapor or an aerosol generated in the atomization section flows, wherein: the raw material holding section includes an area filled with a raw material containing small pieces or fine powder of a plant of the genus Nicotiana, and a first net-like member disposed upstream of the area to seal the raw material; Sa < S1 is satisfied, where Sa is the area of an image formed by vertical projection of a downstream end surface of a flow path in the atomization section onto a plane vertical to a flow path direction, and S1 is the area of an image formed by vertical projection of a flow path surface in the first net-like member onto the plane vertical to the flow path direction is S1; and the downstream end of the flow path in the atomization section and the first net-like member are spaced apart from each other.

Description

tobacco products

TECHNICAL FIELD The present invention relates to tobacco products, more particularly, raw materials comprising pieces of Nicotiana plants (cut tobacco) or reconstituted products (reconstituted tobacco or reconstituted tobacco granules) consisting of fines of Nicotiana plants downstream of an aerosol-generating unit. Tobacco products comprising an ingredient holding unit including a filling section.

Non-combustible tobacco products are known in which vapors or aerosols are generated from an aerosol-generating substrate by electrical power supplied from a battery, passed through a tobacco-containing material, and the vapors or aerosols include tobacco components (e.g., Patent document 1).

International Publication No. 2016/075749

As with combustible tobacco products, it is desired that a predetermined amount of flavor components be supplied to non-combustible tobacco products at the time of inhalation. However, conventional non-combustion tobacco products tend not to supply sufficient flavoring components, especially in the later stages of smoking, and improvements have been desired. In view of such circumstances, an object of the present invention is to provide a non-combustible tobacco product that supplies a predetermined amount of flavor components throughout smoking.

The inventors have found that a non-combustible tobacco product having a specific structure solves the above problems. That is, the above problems are solved by the present invention described below.
(1) an atomizing section;
A tobacco product comprising a raw material holding portion into which vapor or aerosol generated in the atomizing portion flows,
In the raw material holding part, a region filled with a raw material containing pieces or dust of a Nicotiana plant, and a first net-like member arranged upstream of the region for sealing the raw material,
Sa is the area of the image formed by vertically projecting the downstream end face of the flow channel in the atomizing section onto a plane perpendicular to the flow channel direction; When the area of the image formed by projection is S1, Sa<S1,
A downstream end of the flow path in the atomizing section and the first mesh member are separated from each other,
tobacco products.
(2) The tobacco product according to (1), further comprising a second mesh member downstream of the region where the raw material containing the Nicotiana plant pieces or dust is filled.
(3) the flow path direction length L of the spaced portion satisfies the following relationship:
L≧0.05M
(M is the maximum distance in the flow path direction between the downstream side surface of the first net member and the inner wall of the downstream end of the raw material holding portion when the second net member is not present,
When the second net-like member exists, it is the maximum distance in the flow direction between the downstream side of the first net-like member and the upstream side of the second net-like member)
The tobacco product according to (1) or (2).
(4) the flow path direction length L of the spaced portion satisfies the following relationship:
L≧0.05M′
(M' is the maximum distance in the flow path direction between the downstream side of the flow path portion of the first mesh member and the inner wall of the downstream end of the raw material holding portion when the second mesh member does not exist,
When the second mesh member exists, it is the maximum distance in the flow path direction between the downstream side of the flow path portion of the first mesh member and the upstream side of the flow path portion of the second mesh member)
A tobacco product according to any one of (1) to (3).
(5) The tobacco product according to any one of (1) to (4), wherein L is 1 mm or more.
(6) S1 and Sa satisfy the following relationship,
3 Sa ≤ S1 ≤ 10 Sa
A tobacco product according to any one of (1) to (5).
(7) The tobacco product according to any one of (1) to (6), wherein S1 is 20-80 mm ² .
(8) of (2) to (7), wherein S1>S2, where S2 is the area of an image formed by vertically projecting the flow path surface of the second mesh member onto a plane perpendicular to the flow path direction; A tobacco product according to any one of the preceding claims.

According to the present invention, it is possible to provide a non-combustible tobacco product in which flavor components are supplied in a predetermined amount throughout smoking.

Diagram showing one aspect of an infused tobacco product Conceptual diagram for explaining the structure of the raw material holder Diagram explaining the structure of the cartridge Diagram explaining the structure of the cartridge A diagram for explaining an example of the power supply unit 10 Figure showing the results of Example A and Comparative Example A Figure showing the results of Example B Figure showing the results of Example C

The tobacco product of the present invention comprises an atomizing part and a raw material holding part into which vapor or aerosol generated by the atomizing part flows. In the raw material holding portion, a raw material filling region including tobacco and a first net member are arranged upstream of the region for sealing the raw material. A widened portion is provided in the flow path of the vapor or aerosol. Specifically, the width of the flow path of the raw material holding portion is wider than that of the flow path at the end of the atomizing portion. Furthermore, the downstream end of the flow path in the atomizing section and the first mesh member are separated from each other.

Like the tobacco product of the present invention, a raw material filling section containing tobacco pieces (cut tobacco) or a reconstituted product (reconstituted tobacco or reconstituted tobacco granules) consisting of tobacco shavings downstream of the aerosol-generating unit. A tobacco-containing product comprising an ingredient holding unit containing is hereinafter also referred to as an "infused tobacco product". Infused tobacco products include a type that generates vapor or aerosol by heating an aerosol source such as glycerin, and a type that generates aerosol by applying vibration to the aerosol source. The infused tobacco product of the present invention may be of any type, but for the sake of brevity, the present invention will be described using the aforementioned types as examples.

Fig. 1 shows one embodiment of the infused tobacco product of the present invention. In the figure, 1 is an infused tobacco product, 10 is a power supply unit, 20 is a cartridge, 30 is an atomizing section, and 40 is a raw material holding section. Vapor or aerosol generated in the atomizing section 30 is introduced into the raw material holding section 40 and flows to the mouthpiece end 3 . The non-mouthpiece end 2 side is called upstream, and the mouthpiece end 3 side is called downstream. The raw material holding part 40 also functions as a mouthpiece.

[Raw material holding part]
1) Structure FIG. 2 is a conceptual diagram illustrating the structure of the raw material holding unit 40. As shown in FIG. In the figure, 40 is a raw material holding portion, and 41 is a spacing portion. 42 is a first net-like member, 44 is a second net-like member, 43 is an outer frame, 46 is a raw material filling area, 48 is an upstream end, and 49 is a downstream end. The first net-like member 42 and the second net-like member 44 seal the raw material and prevent the raw material filling area from moving. Although the second net-like member 44 is arranged in this aspect, the second net-like member 44 may be omitted. The atomizing section 30 is present upstream of the raw material holding section 40, and the downstream end of the flow path 38 in the atomizing section 30 and the outer frame 43 are joined or joined together. As a method of joining the two members, there is a method of utilizing the force of attraction between the permanent magnet embedded in the atomizing portion and the magnetic material embedded in the outer frame 43, and a method of fitting the two members together. The area Sa of the image formed by vertically projecting the downstream end surface of the flow channel 38 (the surface formed by the inner circumference of the downstream end) onto a plane perpendicular to the flow channel direction, The area S1 of the image formed by vertical projection onto the plane perpendicular to the direction satisfies the relationship Sa<S1. Sa is the area of the cross section perpendicular to the flow direction of the flow path 38 at the connecting portion between the atomizing portion 30 and the raw material holding portion 40 . Similarly, S1 is the area of the cross section perpendicular to the flow direction of the portion of the first mesh member 42 that functions as the flow path. Sa and S1 are adjusted by the shape of the raw material holding portion 40, but S1 can also be adjusted by masking a part of the first mesh member 42 or the like. Said S1 is preferably 3 to 10 times greater than Sa. Also, S1 is between 20 and 80 mm ² in one aspect. The shape of the raw material holding part 40 is not limited, and can be a cylinder, a cube, or a rectangular parallelepiped. In this case, the diameter or width is appropriately adjusted so as to satisfy the relationship between S1 and Sa. In one aspect, the diameter or width is about 10 to 20 mm.

The first mesh member 42 and the downstream end of the flow path 38 in the atomizing section are separated from each other. If the two are in contact with each other, the aerosol introduced from the atomizing part will condense in the first net-like member 42, causing clogging of the first net-like member 42. As a result, the supply amount of the flavor component will decrease during smoking. decreases or stops. However, in the present invention, since the first mesh member 42 and the downstream end of the flow path 38 in the atomizing section are spaced apart, the condensation can be avoided, and as a result, a sufficient amount of the flavor component can be produced throughout smoking. supplied. Specifically, the length L of the spaced portion in the direction of the flow path (hereinafter also referred to as the “spacing distance L”) is preferably 0.5 mm or more, and more preferably 1.0 mm or more. The upper limit is preferably 7.5 mm or less.

The separation distance L preferably satisfies the relationship of L≧0.05M, and more preferably satisfies the relationship of L≧0.08M. M is the maximum distance (inner dimension distance) in the flow direction between the downstream side surface of the first net member 42 and the upstream side surface of the second net member 44 in the embodiment of FIG. 2(1) where the second net member is present. be. That is, M is the distance between the downstream major surface of the first mesh member 42 and the upstream major surface of the second mesh member 44 . In addition, as shown in FIG. 2(2), in a mode in which the first net-like member 42 is provided so as not to be perpendicular to the flow path direction, M is the downstream main surface of the first net-like member 42 and the is the maximum distance in the flow direction of the upstream main surface of the Further, in a mode in which the second net-like member 44 is not provided, M is the maximum distance (inner dimension distance) between the first net-like member 42 and the inner wall of the downstream end of the raw material holding portion 40 in the flow path direction. That is, in this case, M is the maximum distance in the flow path direction between the downstream main surface of the first mesh member 42 and the inner wall of the downstream end of the raw material holding portion. The value of M is appropriately adjusted in relation to the filling amount of the raw material, but in one aspect, it is about 8 to 15 mm. The upper limit value of L is appropriately adjusted within a relationship in which the total length of the raw material holding portion 40 in the flow path direction is optimally distributed by the separation distance L and the raw material filling portion length M, etc., and within a range in which the aerosol does not aggregate on the inner wall of the separation portion. is preferably L≦0.5M.

Further, when a part of the first mesh member 42 forms a flow path, the above L preferably satisfies the relationship of M′ and L≧0.05M′, and the relationship of L≧0.08M′ is satisfied. It is more preferable to satisfy M′ is the maximum distance (inner dimension distance) in the flow path direction between the downstream side surface of the flow path portion of the first mesh member 42 and the inner wall of the downstream end of the raw material holding portion 40 when the second mesh member 44 is not present. , and when the second mesh member 44 is present, it is the maximum distance in the flow direction between the downstream side of the flow path portion of the first mesh member 42 and the upstream side of the flow path portion of the second mesh member 44 . As shown in FIG. 2(1), M and M' are the same in the aspect in which the first mesh member 42 is provided substantially perpendicular to the flow path direction. On the other hand, as shown in FIG. 2(2), when the first mesh member 42 is provided non-perpendicular to the flow channel direction and partly masked, M and M' are different. In this embodiment, M′ is specifically the maximum distance (inner dimension distance) in the flow direction between the portion of the first mesh member 42 functioning as the flow path and the portion of the second mesh member 44 functioning as the flow path. .

When the area of the image formed by vertically projecting the flow path surface of the second mesh member 44 onto a plane perpendicular to the flow path direction is S2, it is preferable that S1>S2.

2) Net-like member A net-like member is a member having a net-like structure. As the net-like member, there are a non-woven fabric in which a plurality of fibers are randomly crossed to form a net-like structure, a mesh in which fibers are regularly crossed to form a net steel structure, and a plate-like member with openings. mentioned.

Non-woven fabric is composed of fibers. Although the fibers are not limited, for example, polyolefin fibers such as polypropylene fibers and polyethylene fibers, polyester fibers such as polyethylene terephthalate fibers, and biodegradable materials such as natural fibers, cellulose fibers, wood pulp fibers, gramineous plant fibers, and agave. plant fiber, sisal fiber, mallow plant fiber, jute fiber, polylactic acid fiber, and the like. The nonwoven fabric may contain one kind of these fibers, or may contain two or more kinds. It is preferable that the nonwoven fabric and the outer frame body 43 are made of the same material because they can be welded together. In one aspect, the material of the outer frame 43 is preferably polyolefin, more preferably polypropylene. Therefore, the fibers are preferably polyolefin fibers, more preferably polypropylene fibers. Polypropylene sorbs a smaller amount of nicotine during storage, and can further suppress the decrease in the amount of nicotine before use. In another embodiment, the material of the outer frame 43 is preferably polyester, more preferably PET. Therefore, the fibers are preferably polyester fibers, and more preferably PET fibers. PET fibers sorb less nicotine during storage, and can further suppress the decrease in the amount of nicotine before use.

The density of the nonwoven fabric is preferably 0.04 g/cm ³ or more, more preferably 0.06 g/cm ³ or more, and still more preferably 0.08 g/cm ³ from the viewpoint of strength and raw material sealing properties. That's it. The upper limit is preferably 0.24 g/cm ³ or less, more preferably 0.20 g/cm ³ or less, still more preferably 0.15 g/cm ³ or less, from the viewpoint of ease of inhalation and nicotine filterability.

The air permeability of the nonwoven fabric 42 is preferably 100 cc/cm ² /sec or more, more preferably 150 cc/cm ² /sec or more, from the viewpoint of aerosol breathability. In addition, the upper limit is preferably 1000 cc/cm ² /sec or less, more preferably 500 cc/cm ² /sec or less, from the viewpoint of the raw material sealing properties. The air permeability of a nonwoven fabric can be measured by a JIS air permeability test (L 1096). Nonwoven 44 may be of the same construction and structure as nonwoven 42 .

Meshes include metal meshes or polymer meshes. The specification of the metal or polymer mesh may be a porosity (ε) of 30% or more and 70% or less. The porosity (ε) is defined as follows using each element that constitutes the mesh.
Porosity (ε) = (A/(A+d)) ² × 100
A: Wire mesh opening (unit: mm)
d: Wire diameter of wire (unit: mm)
The wire diameter (d) of the wire may be 0.1 mm or less in the case of metal mesh. The mesh size (A) of the wire may be 0.10 to 1.50 (mm).

A metal plate (punching metal) in which holes are regularly drilled can be used as a plate-shaped member provided with openings. A hole opening method may be either a laser hole opening method or an etching method.

The thickness of the mesh member 42 is preferably 5 mm or less, more preferably 3 mm or less, and even more preferably 2 mm or less. From the viewpoint of improving the strength, the lower limit is preferably 0.5 mm or more, more preferably 0.7 mm or more, and even more preferably 1.0 mm or more.

3) Raw Material Filling Region The raw material filling region is filled with a raw material (hereinafter also referred to as "raw material piece") containing pieces or dust of Nicotiana plants. As raw material pieces, shredded tobacco, a molded product obtained by molding tobacco raw material into granules, and the like can be used. The raw material filling area may be filled with plants other than tobacco (for example, mints, herbs, etc.). In addition, a raw material containing tobacco may be added with a flavor such as menthol. The size of the raw material pieces is preferably 0.2-2.0 mm, more preferably 0.4-1.0 mm. The smaller the size of the raw material pieces, the greater the specific surface area, so that the flavor and taste components are more likely to be released.

Here, the raw material pieces are obtained by sieving according to JIS Z 8815 using a stainless steel sieve according to JIS Z 8801, for example. For example, using a stainless steel sieve with an opening of 0.71 mm, the raw material pieces are sieved for 20 minutes by a dry and mechanical shaking method to pass through a stainless steel sieve with an opening of 0.71 mm. Obtain raw material pieces. Subsequently, using a stainless sieve with an opening of 0.212 mm, the raw material pieces are sieved for 20 minutes by a dry and mechanical shaking method to pass through a stainless sieve with an opening of 0.212 mm. remove the raw material pieces. That is, the raw material piece is a raw material piece that passes through a stainless sieve (opening=0.71 mm) that defines the upper limit and does not pass through a stainless sieve (opening=0.212 mm) that defines the lower limit.

From the viewpoint of increasing the volatilization amount of nicotine during smoking, the filling amount of raw material pieces is preferably 300 mg or more, more preferably 350 mg or more.

[cartridge]
In the infused tobacco product 1 shown in FIG. 1 , the cartridge 20 accommodates the atomization section 30 and the raw material holding section 40 . 3 and 4 are diagrams for explaining the structure of the cartridge. In the figure, 30 is an atomizing section, and 40 is a raw material holding section. The cartridge 20 has a reservoir 21 , an atomizing device 22 , a channel forming body 23 and an outer frame body 24 . The cartridge 20 has a first channel 20X arranged downstream of the atomization device 22 as an aerosol channel.

The reservoir 21 stores the aerosol source 21A. The reservoir 21 is positioned around the flow path forming body 23 in a cross section orthogonal to the flow direction of the aerosol. The reservoir 21 is positioned within the gap between the flow path forming body 23 and the outer frame body 24 . The reservoir 21 is made of, for example, a porous material such as a resin web or cotton. Alternatively, the reservoir 21 may be configured by a tank containing a liquid aerosol source 21A. Examples of the aerosol source 21A include glycerin and propylene glycol.

The atomization device 22 atomizes the aerosol source 21A without combustion by the electric power supplied from the battery 11. The atomization device 22 is composed of a heating wire (coil) wound at a predetermined pitch. The atomization device 22 is preferably composed of a heating wire having a resistance value in the range of 1.0-3.0Ω. The predetermined pitch is equal to or greater than the value at which the heating wire does not contact, and is preferably smaller. The predetermined pitch is preferably 0.40 mm or less, for example. The predetermined pitch is preferably constant in order to stabilize the atomization of the aerosol source 21A. The predetermined pitch is the interval between the centers of the heating wires adjacent to each other.

The channel forming body 23 has a cylindrical shape that forms the first channel 20X extending along the flow direction of the aerosol. The outer frame body 24 has a cylindrical shape that accommodates the flow path forming body 23 . The outer frame body 24 accommodates a portion of the tobacco capsule 30 .

The cartridge 20 is detachable from the power supply unit 10. Also, the raw material holding unit 40 is detachable from the cartridge 20 . That is, the cartridge 20 and the raw material holding portion 40 are each replaceable.

[Power supply unit]
An example of the power supply unit 10 is shown in FIG. The power supply unit 10 shown in FIG. 5 has a battery 11 . The battery 11 may be a disposable type battery or a rechargeable type battery. The initial value of the output voltage of the battery 11 is preferably in the range of 1.2V or more and 4.2V or less. Moreover, the battery capacity of the battery 11 is preferably in the range of 100 mAh or more and 1000 mAh or less.

[Example A1]
A rectangular parallelepiped raw material holding portion shown in FIG. 2(1) was prepared. The outer frame body of the raw material holding part was made of a transparent resin (VisiJet M3 crystal) and molded using a 3D printer (ProJet 3600). Its dimensions were as shown in Table 1. A 1-mm-thick non-woven fabric obtained by blending polyolefin fibers, polypropylene fibers, and polyethylene was used as the mesh member.

The infused tobacco product shown in FIG. 1 having the raw material holding portion is prepared, the aerosol flow is substantially vertical, and the raw material filled in the raw material filling portion covers the upper surface of the net-like member on the atomizing portion side. Connected to an automatic smoking device (Borgwaldt, LM4E) as in the above, one Cambridge filter was placed between the infused tobacco product and the automatic smoking device, and the aerosol generated by the infused tobacco product was filtered through the Cambridge filter. made it possible to collect

A Cambridge filter is a flat circular glass fiber filter with a diameter of about 44 mm and a thickness of 1.5 mm, and is well known and widely used by those skilled in the art as a filter capable of capturing particulate matter. Cambridge filters are available from Cambridge Filter Japan Co., Ltd., Borgwald (catalog number 8020 285 2), and the like.
The automatic smoking machine can be used up to 100 times under the conditions according to the smoking test conditions of “CORESTA RECOMMENDED METHOD No.81 “ROUTINE ANALYTICAL MACHINE FOR E-CIGARETTE AEROSOL GENERATION AND COLLECTION - DEFINITIONS AND STANDARD CONDITIONS (June 2015)””. A smoking motion was performed. Depending on the number of smoking actions, the following 5 sections 1st section (equivalent to 5 smoking actions): ~ 10 times,
2nd section (equivalent to smoking motion 20 times): ~ 30 times,
3rd section (equivalent to smoking motion 40 times): ~ 50 times,
4th section (equivalent to smoking motion 60 times): ~ 70 times,
5th section (equivalent to smoking motion 80 times): ~ 90 times,
6th section (equivalent to smoking motion 95 times): ~ 100 times,
was set for machine smoking.

Immediately after mechanical smoking was completed for the set number of times in each section, the Cambridge filter that had collected the aerosol was placed in a screw bottle, and 10 ml of ethanol containing 0.4 mg/mL of 1,3-butanediol was added as an internal standard. The sample was shaken at 280 times/minute for 1 hour to extract the collected aerosol. The extract was subjected to gas chromatography analysis to measure the amount of nicotine. As part of the component analysis of the collected aerosol, we examined the extent to which the amount of nicotine exhaled from the infused tobacco product increases or decreases with repeated smoking motions. Nicotine was quantified by a method commonly used by those skilled in the art. That is, the ethanol solution containing the collected aerosol was analyzed by GC-MS (manufactured by Agilent Technology, model number 5977B GC/MSD, gas type He, gas flow rate 1.3 ml/min, column DB-WAX 30 mm × 0.25 mm × 0 .25 μm), the content components were comparatively quantitatively analyzed.

Section 1: The amount of nicotine discharged from 0 to 10 times was divided by 10 to obtain the amount of nicotine discharged (μg/puff) per smoking action. Similarly, for the 2nd to 6th segments, the quantitative results were divided by the number of smoking motions corresponding to the segments. Then, the nicotine ejection amount (μg/puff) in the first interval was set to 100, and the ratio of the nicotine ejection amount in each interval was shown (FIG. 6).

The term "smoking motion" used in this specification will be explained. Unlike cigarette products, infused tobacco products do not burn tobacco raw materials, and therefore do not generate "smoke", which is generally gas generated by combustion or thermal decomposition or gas with fine particles suspended therein. Therefore, the action from which a person discharges an aerosol is not strictly a "smoking action", but can also be called a "sucking action". The same applies to the action of an automatic smoking machine, which corresponds to the action of a person discharging an aerosol. However, in the tobacco industry and related international standards, the idiomatic expression for the action is still "smoking action". In this specification, the phrase "smoking action" is used as it is, respecting the common expression.

[Example A2]
A smoking test was conducted and evaluated in the same manner as in Example 1, except that L was 2 mm.
[Comparative Example A]
A smoking test was conducted and evaluated in the same manner as in Example 1, except that L was set to 0 mm. These results are shown in FIG.

[Example B]
A smoking test was conducted and evaluated in the same manner as in Example 1, except that the shape was changed as shown in Table 2. These results are shown in FIG.

[Example C]
A smoking test was conducted and evaluated in the same manner as in Example 1, except that the shape was changed as shown in Table 3. These results are shown in FIG.

It is clear that the non-combustion tobacco product of the present invention supplies a predetermined amount of flavor components throughout smoking.

1 infused tobacco product 2 non-mouth end 3 mouth end 10 power supply unit 11 battery 20 cartridge 20X first channel 21 reservoir 21A aerosol source 22 atomizing device 23 channel forming body 24 outer frame 30 atomizing section 38 channel 40 Raw material holding part 41 Spacing part 42 First mesh member, nonwoven fabric 43 Outer frame body 44 Second mesh member, nonwoven fabric 48 Upstream end 49 Downstream end

Claims (8)

an atomizing section;
A tobacco product comprising a raw material holding portion into which vapor or aerosol generated in the atomizing portion flows,
In the raw material holding part, a region filled with a raw material containing pieces or dust of a Nicotiana plant, and a first net-like member arranged upstream of the region for sealing the raw material,
Sa is the area of the image formed by vertically projecting the downstream end face of the flow channel in the atomizing section onto a plane perpendicular to the flow channel direction; When the area of the image formed by projection is S1, Sa<S1,
A downstream end of the flow path in the atomizing section and the first mesh member are separated from each other,
tobacco products. The tobacco product according to claim 1, further comprising a second mesh member downstream of the region filled with the raw material. The flow path direction length L of the spaced portion satisfies the following relationship:
L≧0.05M
(M is the maximum distance in the flow path direction between the downstream side surface of the first net member and the inner wall of the downstream end of the raw material holding portion when the second net member is not present,
When the second net-like member exists, it is the maximum distance in the flow direction between the downstream side of the first net-like member and the upstream side of the second net-like member)
3. A tobacco product according to claim 1 or 2. The flow path direction length L of the spaced portion satisfies the following relationship:
L≧0.05M′
(M' is the maximum distance in the flow path direction between the downstream side of the flow path portion of the first mesh member and the inner wall of the downstream end of the raw material holding portion when the second mesh member does not exist,
When the second mesh member exists, it is the maximum distance in the flow path direction between the downstream side of the flow path portion of the first mesh member and the upstream side of the flow path portion of the second mesh member)
A tobacco product according to any one of claims 1-3. The tobacco product according to any one of claims 1 to 4, wherein said L is 1 mm or more. S1 and Sa satisfy the following relationship,
3 Sa ≤ S1 ≤ 10 Sa
A tobacco product according to any one of claims 1-5. A tobacco product according to any preceding claim, wherein said S1 is between 20 and 80 mm ² . 8. The set forth in any one of claims 2 to 7, wherein S1>S2, where S2 is the area of an image formed by vertically projecting the flow path surface of the second mesh member onto a plane perpendicular to the flow path direction. tobacco products.

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