JP2023126894A - Tobacco rod for flavor aspirator - Google Patents

Abstract

To provide a tobacco rod for a flavor aspirator having high volatilization efficiency of a flavor component.SOLUTION: In a tobacco rod 1 which is a tobacco rod for a flavor aspirator having a plurality of joined rod-shaped segments 1s, the segment 1s includes a cylindrical housing body and a flavor source containing tobacco filled in the cylindrical housing body. The flavor source is filled so as to form a channel 1c for circulating a flavor component over a longer direction, and the channel 1c of each segment is discontinuously joined to a junction.SELECTED DRAWING: Figure 1

Description

The present invention relates to a tobacco rod for a flavor inhaler, and more particularly to a tobacco rod for a direct heating or indirect heating flavor inhaler.

Directly heated flavor inhalers and indirectly heated flavor inhalers have been developed to replace traditional combustion smoking articles. US Pat. No. 5,090,003 discloses a heated smoking article comprising a gathered and crimped sheet of tobacco material.

Patent No. 6017546

The flavor source in a direct heat flavor inhaler is heated at a lower temperature than in conventional combustible cigarettes, and the flavor source in an indirect heat flavor inhaler is not heated directly. For this reason, direct heating type flavor inhalers and indirect heating type flavor inhalers do not have high volatilization characteristics of flavor components compared to conventional combustion type cigarettes. In view of such circumstances, an object of the present invention is to provide a tobacco rod for a flavor inhaler that has high volatilization efficiency of flavor components.

As a result of intensive studies, the inventors found that a tobacco rod in which a plurality of segments are joined such that the channels of each segment are discontinuous can solve the above problem. That is, the above-mentioned problem is solved by the present invention described below.
(Aspect 1)
A tobacco rod for a flavor inhaler comprising a plurality of joined rod-like segments, the tobacco rod comprising:
The segment includes a cylindrical container and a flavor source containing tobacco filled in the cylindrical container, and the flavor source is filled to form a channel for distributing flavor components in the longitudinal direction. and
The tobacco rod, wherein the channels of each segment are discontinuously joined at the joint.
(Aspect 2)
A tobacco rod according to aspect 1 for use in a direct heating type or indirect heating type flavor inhaler.
(Aspect 3)
The tobacco rod according to any one of aspects 2 to 4, wherein the flavor source includes a flavor generating sheet whose surface is treated.
(Aspect 4)
The tobacco rod according to aspect 2 or 3, wherein the side surface of the cylindrical container is made of a material selected from the group consisting of paper, resin, metal, and combinations thereof.
(Aspect 5)
The tobacco rod according to any one of aspects 2 to 4, wherein the side surface of the cylindrical container has a multilayer structure.
(Aspect 6)
The tobacco rod according to any one of aspects 2 to 5, wherein the air permeability of the side surface of the cylindrical container is less than 1 Coresta unit.
(Aspect 7)
The tobacco rod according to any one of aspects 2 to 6, wherein the flavor source includes a plurality of strip-shaped flavor generating sheets, and the longitudinal direction of the sheets is substantially parallel to the longitudinal direction of the cylindrical container.
(Aspect 8)
A tobacco rod according to any of aspects 2 to 7, wherein the flavor source comprises an aerosol source that generates an aerosol.
(Aspect 9)
A method for manufacturing a tobacco rod according to any one of aspects 1 to 8, comprising:
A precursor comprising a cylindrical container and a flavor source containing tobacco filled in the cylindrical container, the flavor source being filled to form a channel for distributing flavor components in the longitudinal direction. The process of preparing the body,
cutting the precursor in a direction perpendicular to the longitudinal direction to prepare two or more of the segments;
A method of manufacturing comprising the step of circumferentially rotating one or more of the segments about a longitudinal axis.
(Aspect 10)
A direct heating type or indirect heating type flavor inhaler comprising the tobacco rod according to any one of aspects 1 to 8.
(Aspect 11)
The flavor inhaler according to aspect 10, further comprising an aerosol source that generates an aerosol upstream of the tobacco rod.
(Aspect 12)
An ultrasonic vibration type flavor inhaler comprising the tobacco rod according to aspect 1.

According to the present invention, it is possible to provide a tobacco rod for a flavor inhaler with high volatilization efficiency of flavor components.

Tobacco rod outline diagram Cross-sectional view of one embodiment of the segment Schematic diagram and cross-sectional diagram of another aspect of the segment Conceptual diagram of a direct heating flavor inhaler Conceptual diagram of indirect heating type flavor inhaler Conceptual diagram of one aspect of an indirect heating flavor suction system A cross-sectional view of one embodiment of a cartridge Conceptual diagram showing the manufacturing method of tobacco rods Correlation diagram between the number of segments and the volatilization characteristics of flavor components

The present invention will be explained in detail below. In the present invention, "X to Y" includes the end values of X and Y.

1. Tobacco Rod A tobacco rod is a columnar member that produces flavor. The mouth end side of the tobacco rod is called "downstream," and the opposite side is called "upstream." Figure 1 shows an overview of the tobacco rod. FIG. 1 is a perspective view of a tobacco rod. In the figure, 1 is a tobacco rod, 1s is a segment constituting the tobacco rod 1, and 1c is a channel for distributing flavor components in the longitudinal direction. As shown in the figure, the channel 1c is discontinuously joined at the joint surface of each segment 1s. The expression "discontinuously joined" means that the channels are joined so that some, but not all, of the channels overlap. Although one channel 1c in each segment 1s is shown in the figure for ease of understanding, there may be a plurality of channels 1c. When a plurality of channels 1c exist, it is sufficient that one or more discontinuously joined channels are formed along the longitudinal direction of the tobacco rod 1. Moreover, it is sufficient that one or more discontinuous joint points exist in the channel provided over the longitudinal direction. For example, if there are three rod-shaped segments, there is a discontinuous joint at either the joint between the first and second segment or the joint between the second and third segment. All you have to do is stay there. In the present invention, by providing such a channel, the time that the aerosol stays in the tobacco rod 1 can be extended, so that the volatilization efficiency of flavor components can be increased. An example of a substance for comparing the volatilization characteristics of flavor components is nicotine.

The cross-sectional shape of the tobacco rod 1 is not limited, and may be a circle, an ellipse, a polygon, or a rounded polygon. Although the size of the cross-sectional shape of the tobacco rod 1 is not limited, its maximum length (hereinafter also referred to as "width") is preferably 1 mm or more, more preferably 3 mm or more. The upper limit thereof is preferably 9 mm or less, more preferably 7 mm or less. The length of the tobacco rod 1 is preferably 40 mm or less, more preferably 25 mm or less. The lower limit thereof is preferably 1 mm or more, more preferably 5 mm or more. The length of the segment 1s is adjusted as appropriate depending on the length of the tobacco rod 1 and the number of segments.

(1) Flavor Source The segment 1s includes a flavor source 10 containing tobacco. A flavor source (hereinafter also simply referred to as "flavor source") 10 containing tobacco forms a channel through which the aerosol flows in the longitudinal direction of the segment 1s. For this reason, it is preferable that the flavor source 10 containing tobacco is a flavor generating sheet. Examples of the flavor-generating sheet include a sheet in which a sheet base material supports a component that can generate flavor, or a sheet made of a material that generates flavor. Examples of components that can generate flavor include flavor components contained in tobacco raw materials, flavor components such as menthol, and the like. Examples of the sheet base material include tobacco materials such as compressed tobacco pellets and tobacco powder, but tobacco materials are preferred. In other words, the flavor-generating sheet only needs to contain a tobacco-derived material in either the sheet base material or the flavor-generating component, and in one embodiment, the flavor can be generated in the base sheet of tobacco material as needed. A tobacco sheet carrying components is preferred.

1) Channel The flavor source 10 is filled in a cylindrical container 12, which will be described later, so as to form a channel gap in the longitudinal direction. FIG. 2 shows a cross-sectional view of a segment 1s in which a flavor generating sheet 10s is folded and filled into a cylindrical container 12 as a flavor source 10. FIG. 2(1) shows an embodiment in which the flavor-generating sheet 10s without surface treatment is filled, and FIG. 2(2) shows an embodiment in which the flavor-generating sheet 10s which has been surface-treated such as crimping is filled. The number of flavor-generating sheets to be filled is not limited and may be 1 to 3, but from the viewpoint of ease of manufacture, it is preferably 1.

The filling amount of the flavor source 10 is adjusted as appropriate, and in one embodiment, it is preferably 40 to 90% by volume based on the volume of the cylindrical container 12. More preferable lower limits include 50% by volume or more, 55% by volume or more, or 60% by volume or more, and more preferable upper limits include 60% by volume or less, 65% by volume or less, 70% by volume or less, and 80% by volume or less. , or 90% by volume or less. When a plurality of channels 1c exist, the cross-sectional area of each channel may be substantially uniform, or one or more channels may have a larger cross-sectional area than others. In the latter embodiment, channels of large cross-sectional area are preferably joined in a discontinuous manner.

When using the flavor generating sheet 10s as the flavor source 10, it is preferable that at least one surface of the sheet is surface-treated. Surface processing refers to processing that forms a plurality of unevenness on the front or back surface of the flavor generating sheet 10s. The surface treatment is not particularly limited, and crimping, embossing, debossing, half-cutting, etc. can be performed. Crimping is a process that creates wrinkles on the sheet. For example, by passing the flavor generating sheet 10s between a pair of rollers having a plurality of convex portions on the surface, the flavor generating sheet 10s is crimped by providing wrinkles extending perpendicularly to the sheet conveyance direction on both the front and back surfaces of the flavor generating sheet 10s. can be applied. The convex portion provided in this way extends perpendicularly to the sheet conveyance direction. The pitch between the vertices of the convex portions provided on the roller is preferably 0.5 to 2.0 mm. Further, the apex angle is preferably 30 to 70°. Emboss processing and deboss processing are processes in which a convex processing tool is pressed against a sheet to form a recess on one or both sides of the sheet, and half-cut processing is a process in which a concave portion is formed on one or both sides of the sheet to the extent that the sheet is not cut. This is a process in which a cut is made to a depth of , preferably less than half the sheet thickness.

Further, as the flavor source 10, a plurality of strip-shaped flavor generating sheets may be used. The strip-shaped sheet is a sheet whose length in the transverse direction on the main surface of the sheet is smaller than the cross-sectional dimension of the cylindrical container 12. FIG. 3(1) shows an overview of this aspect. In the figure, 10r is a rectangular flavor generating sheet. The strip-shaped flavor generating sheets 10r are filled so that their longitudinal direction is substantially parallel to the longitudinal direction of the cylindrical container 12. A cross-sectional view of the segment 1s in this embodiment is shown in FIG. 3(2). The strip-shaped flavor generating sheet 10r may be subjected to the above surface treatment.

As a method for manufacturing tobacco rods, the manufacturing method disclosed in JP-A No. 62-272962 is known, and the segment 1s of the present invention can also be manufactured by the method described in that publication. However, in the present invention, it is preferable to use a reconstituted tobacco sheet instead of the recycled tobacco material as the sheet material, and it is preferable to use a paper sheet, a slurry sheet, or a cast sheet as the reconstituted tobacco sheet. The strip of sheet material drawn from the bobbin may also be subjected to the surface treatment described in the previous paragraph before being passed through the cutting means.

2) Preparation of flavor generating sheet 10s The flavor generating sheet 10s can be prepared by a known method. For example, the flavor generating sheet 10s can be prepared by a known method such as paper forming, slurry, rolling, etc. Specifically, in the case of papermaking, it can be manufactured by a method including the following steps. 1) Roughly crush dried leaf tobacco raw material, extract with water, and separate into water extract and residue. 2) Dry and concentrate the aqueous extract under reduced pressure. 3) Add pulp to the residue, turn it into fibers using a refiner, and then make paper. 4) A concentrated solution of water extract is added to the paper sheet and dried to form a tobacco sheet.

3) Dimensions, etc. of the flavor-generating sheet 10s Although the shape of the flavor-generating sheet 10s is not limited, it is preferable that the main surface of the sheet has a rectangular shape. Although the thickness is not limited, it is preferably 200 to 600 μm in consideration of highly efficient heat exchange, strength of flavor generating segments, etc. It is preferable that one side A of the flavor generating sheet 10s is the same as the longitudinal length of the cylindrical container 12. The length of the other side B of the flavor generating sheet 10s is adjusted as appropriate, but in one embodiment is 1 to 10 times the length of A.

4) Preparation of the rectangular flavor generating sheet 10r The rectangular flavor generating sheet 10r can be prepared by cutting the flavor generating sheet 10s. It is preferable that the longitudinal length a of the strip-shaped flavor generating sheet 10r is the same as the longitudinal length of the cylindrical container 12. The length b in the lateral direction of the strip-shaped flavor generating sheet 10r is adjusted as appropriate, but in one embodiment it is about 0.4 to 3.0 mm, preferably 0.6 to 2.0 mm, more preferably 0.8 mm. ~1.5mm.

5) Aerosol Source The flavor source 10 may include an aerosol source. Examples of the aerosol source include polyols such as glycerin, propylene glycol, and 1,3-butanediol. The amount of the aerosol source added is preferably 5 to 50% by weight, more preferably 10 to 30% by weight, based on the dry weight of the flavor source 10. The aerosol source included in flavor source 10 is also referred to as an "internal aerosol source." The tobacco rod 1 containing an internal aerosol source is suitable for a direct heating flavor inhaler. As discussed below, flavor source 10 for an indirectly heated flavor inhaler preferably does not include an internal aerosol source.

(2) Cylindrical container The cylindrical container 12 is made of a known material. For example, the side surface of the cylindrical container 12 is made of a material selected from the group consisting of paper, resin, metal, and combinations thereof. When used in an indirect heating type flavor inhaler, the cylindrical container 12 is preferably made of resin from the viewpoint of ease of handling. Examples of the resin include polypropylene, polyethylene terephthalate, polyethylene, ABS, and polylactic acid resin. Although the thickness of the side surface portion is not limited, it is preferably about 0.4 to 1.0 mm, more preferably about 0.6 to 0.8 mm, and even more preferably about 0.7 mm.

When used in an indirect heating type flavor inhaler, the side surface of the cylindrical container 12 is made of polyethylene film, polyvinyl alcohol, a laminate of a resin film such as polylactic acid, and paper, alginic acid, carrageenan, carboxymethylcellulose, xanthan gum, guar gum, pectin, A laminate of paper and a thin layer coated with a solution of polysaccharide/mucopolysaccharide such as mannose, glucuronic acid, locust bean gum, gellan gum, starch, oxidized starch, modified starch, hyaluronic acid, chondroitin sulfate, aluminum foil, etc. It is preferable to use a laminate of metal foil and paper, or cardboard. Although the number of layers of the laminate is not limited, it is preferably a three-layer structure of paper layer/resin layer (or metal foil layer or polysaccharide/mucopolysaccharide layer)/paper layer. Since the paper layer of the laminate is exposed, it can be sufficiently adhered using vinyl acetate glue or hot melt adhesive during winding. At this time, sufficient peel strength (22.4 g to 28.0 g) can be achieved, and adhesive peeling after winding up can be reduced. Examples of the paper include Sundami #85/S52 (thickness 220 μm, basis weight 85/52 gsm, stiffness 145 cm ³ /100) manufactured by Nippon Paper Industries Papilia. The thickness of the resin layer is preferably 12 to 70 μm, more preferably 17 to 20 μm.

The cardboard preferably has an air permeability of less than 50 Coresta units, preferably less than 15 Coresta units, and more preferably less than 1 Coresta unit. It is preferable that the thickness is about 100 to 150 μm and the basis weight is about 80 to 150 gsm. Examples of cardboard include paper made of about 87.5% by weight of kraft pulp, 5% by weight of inorganic filler, 0.5% by weight of starch, and about 7% by weight of water. Such cardboard is available, for example, from Julius Glatz GmbH.

From the viewpoint of favorably improving the volatilization characteristics of flavor components, the air permeability of the side surface of the cylindrical container 12 is preferably less than 1 Coresta unit, more preferably 0 Coresta unit. The Coresta unit is the air passing flow rate (cm ³ ) per 1 cm ² per minute under 100 mmH ₂ O conditions. It can be measured using an air permeability meter PPM100 manufactured by FILTRONA, USA.

One end or both ends of the cylindrical container 12 may be open, or may be closed while ensuring ventilation. If the end is closed, it is preferably constructed of the aforementioned material. The dimensions of the cylindrical container 12 are appropriately adjusted so as to achieve the aforementioned dimensions of the tobacco rod 1. The cylindrical container 12 may be continuous over a plurality of segments 1s.

2. Direct heating type or indirect heating type flavor inhaler (1) Direct heating type flavor inhaler A direct heating type flavor inhaler is an article that generates flavor by heating the flavor source 10. FIG. 4 shows one embodiment of a direct heating flavor inhaler. In the figure, 100 is a direct heating type flavor inhaler, 1 is a tobacco rod, 2 is a mouthpiece, 20 is a cooling unit, 22 is a filter, and 3 is a wrapper.

The dimensions of the mouthpiece are not limited, but preferably have the same width as the tobacco rod 1, and preferably have a length of 26 to 50 mm. Filter 22 is preferably constructed from materials commonly used in the art, such as cellulose acetate filters. Preferably, the length of the filter 22 is 12-60% of the total length of the mouthpiece. The cooling unit 20 has a function of cooling the aerosol. The cooling section 20 may be hollow and may include a cooling element such as a polylactic acid film. The cooling section 20 may also be provided with ventilation. The length of the cooling member 20 is preferably 8 to 77% of the total length of the mouthpiece 2.

The wrapper 3 may be a laminate of paper and a resin film such as the aforementioned polyethylene film, a laminate of paper and a thin film obtained by drying a polysaccharide/mucopolysaccharide solution, a laminate of paper and metal foil such as aluminum foil, or Cardboard or the like can be used. That is, as shown in FIG. 4(1), the length of the cylindrical container 12 can be extended to serve as the wrapper 3. Moreover, as another aspect, the wrapper 3 can also be provided on the outside of the cylindrical container 12 as shown in FIG. 4(2). In this embodiment, the cylindrical container 12 is preferably made of the resin or cardboard described above.

The direct heating type flavor inhaler is heated by a known heater. Preferably, the heater can electrically heat the tobacco rod 1 to 200 to 400°C. Generally, there are two types of direct heating flavor inhalers: an internal heating type in which a heater is inserted into the tobacco rod 1, and an external heating type in which a heater is placed around the outer circumference of the tobacco rod 1. In the present invention, the latter is preferred because the structure of the channel does not change before and after installing the heater. The combination of a direct heating type flavor suction device and a heater is also called a direct heating type flavor suction system.

(2) Indirect heating type flavor inhaler An indirect heating type flavor inhaler does not directly heat the flavor source, but generates an aerosol from an aerosol source placed upstream of the flavor source, and the flavor component from the flavor source is added to the aerosol. It is an article that produces flavor by carrying FIG. 5 shows one embodiment of an indirect heating type flavor inhaler. In the figure, 200 is an indirect heating type flavor inhaler, 1 is a tobacco rod, 1s is a segment, 3 is a wrapper, 4 is an atomizer, 5 is an external aerosol source, and 7 is an outer frame. The external aerosol source 5 is arranged upstream of the tobacco rod 1 and generates aerosol by means of the atomizer 4 . It is preferable that the atomization unit 4 can electrically heat the external aerosol source 5 to about 200 to 300°C. The heating generates an aerosol, which is introduced into the tobacco rod 1, passes through the flavor source in an atmosphere of 30 to 40°C, carries flavor components, and is inhaled by the user. The combination of an indirect heating type flavor suction device and a power source is also called an indirect heating type flavor suction system. Known indirect heating flavor inhalers and indirect heating flavor inhalation systems are disclosed, for example, in International Publication No. 2016/075749.

FIG. 6 shows a preferred embodiment of the indirectly heated flavor suction system. In the figure, 210 is an indirect heating type flavor suction system, 203 is a power supply unit, and 201 is a cartridge. The cartridge 201 is removably attachable to the power supply unit 203. As shown in FIG. 7, the cartridge 201 includes an external aerosol source 5, an atomizer 4, and a flow path 6. The tobacco rod 1 is housed in a space at the mouth end of the cartridge 201. The tobacco rod 1 is housed in the space within the cartridge 201, thereby configuring the indirect heating type flavor inhaler 200. Cartridge 201 may have a filter at the mouth end.

The external aerosol source 5 can be configured, for example, by supporting the above-described aerosol source on a porous body such as a fiber filler. The length of the external aerosol source 5 is not limited, but is preferably 10 to 25 mm. The power supply unit 203 includes a power source such as a battery, and atomizes the aerosol source without combustion.

As the outer frame body 7 in the indirect heating type flavor inhaler, a resin housing may be used. In the embodiment shown in FIG. 6, the side wall of the cartridge 201 corresponds to the outer frame 7.

Furthermore, the tobacco rod of the present invention can also be used in an ultrasonic vibration type flavor suction device, which is an application example of an indirect heating type flavor suction device. The ultrasonic vibration type flavor aspirator is a flavor aspirator that uses an ultrasonic oscillator in the atomization section and generates aerosol by applying vibrations to an external aerosol source.

3. Method for Manufacturing Tobacco Rod The tobacco rod 1 of the present invention is preferably manufactured through the following steps.
Step 1: comprising a cylindrical container and a flavor source containing tobacco filled in the cylindrical container, and the flavor source is filled to form a channel for distributing flavor components in the longitudinal direction. Prepare the precursor.
Step 2: Cutting the precursor in a direction perpendicular to the longitudinal direction to prepare two or more of the segments.
Step 3: Circumferentially rotating one or more of the segments about a longitudinal axis.
An outline of this manufacturing method is shown in FIG. In FIG. 8, 1' is the precursor, Y is the longitudinal axis, and Z is the cutting location.

(1) Process 1
The precursor can be prepared in the same manner as for segment 1s.

(2) Process 2
In this step, the precursor 1' is cut in a direction perpendicular to the longitudinal direction. For example, cut at position Z in FIG.

(3) Process 3
In this step, one or more of the segments are rotated in the circumferential direction with the longitudinal axis as the central axis. The longitudinal axis is an axis passing through the center of the starting end face and the ending end face. The rotation angle is not limited as long as discontinuously joined channels can be formed. For example, FIG. 8 shows a mode in which the center segment is rotated by about 30 degrees in the circumferential direction.

[Example 1]
A tobacco paper sheet (thickness: 200 μm, basis weight: 71 g/m ² , nicotine content: 1.4% by weight) was treated with an alkaline aqueous solution having a pH of 9.6. The flavor generating sheet was cut into a square shape with a side length of 21 mm and a weight of 310 mg.

A polypropylene straw with a diameter of 8 mm, wall thickness of 0.2 mm, and length of 21 mm was prepared as a cylindrical container. The cut flavor generating sheet was folded and filled into the straw to prepare a precursor. The cross section of the precursor had a shape as shown in FIG. 2(1). The precursor was then cut vertically in the longitudinal direction and divided into thirds to obtain three segments. Furthermore, the center segment was rotated 120 degrees in the circumferential direction with the longitudinal direction as the central axis. Thereafter, the three segments were wrapped with a sheet of chipping paper and joined together to prepare a tobacco rod consisting of the three segments.

The indirect heating type flavor suction system shown in FIG. 6 was prepared with reference to the description in International Publication 2016/075749. The length of the cartridge 201 was 21 mm, which is the same as the length of the tobacco rod 1. Machine smoking of 20 puffs was performed using the system. The samples were prepared in accordance with the moisture conditioning and conditioning method for tobacco and tobacco products specified by the International Organization for Standardization (ISO) 3402:1999 (non-patent literature). The machine smoking method and the collection method of the generated aerosol followed CORRESTA RECOMMENDED METHOD No. 81 “ROUTINE ANALYTICAL MACHINE FOR E-CIGARETTE AEROSOL GENERATION AND COLLECTION - DEFINITIONS AND STANDARD”. The Cambridge filter that had collected the aerosol was recovered, and the amount of nicotine was measured using gas chromatography. The 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 to those skilled in the art and is widely used as a filter capable of trapping particulate matter. Cambridge filters are available from Japan Cambridge Filter Co., Ltd., Borgwalt Co., Ltd. (catalog number 8020 285 2), and others. Nicotine was analyzed as a representative flavor component contained in the collected aerosol particulate matter (Total Particle Matter, hereinafter referred to as "TPM"), and the amount of nicotine in TPM was determined. Nicotine was determined by a method commonly used by those skilled in the art.

[Example 2]
A precursor was prepared in the same manner as in Example 1. The precursor was then divided into five equal parts to obtain five segments. The second and fourth segments were rotated 72 degrees in the circumferential direction with the longitudinal direction as the central axis to prepare a tobacco rod consisting of 5 segments. The tobacco rod was evaluated in the same manner as in Example 1.

[Example 3]
A tobacco paper sheet similar to that used in Example 1 was prepared. Next, the sheet was surface-treated using a crimping roller. A chevron roller (60°, 1 mm pitch) was used as the crimp roller. A flavor generating sheet was thus prepared. The flavor generating sheet was cut into a shape with a side length of 21 mm and a weight of 310 mg. Using the cut sheet, a tobacco rod consisting of 5 segments was produced and evaluated in the same manner as in Example 3.

[Comparative Examples 1 and 2]
Tobacco rods each consisting of 1 and 5 segments were produced and evaluated in the same manner as in Examples 1 and 3, except that the precursor was used as it was as a tobacco rod without being cut. These results are shown in Table 1 and FIG. 9.

As shown in Table 1, the tobacco rod according to the example exhibited a higher value than the comparative example regarding the ratio of flavor components contained in the particulate matter of the aerosol generated from the tobacco rod. It is clear that the tobacco rod of the present invention has excellent flavor component volatilization properties.

1 tobacco rod 1s segment 1c channel

10 Flavor source containing tobacco 10s Flavor generating sheet 10r Strip-shaped flavor generating sheet 12 Cylindrical container

100 Direct heating type flavor inhaler 2 Mouthpiece 20 Cooling part 22 Filter 3 Wrapper

200 Indirect heating type flavor inhaler

210 Indirect heating type flavor suction system 201 Cartridge 4 Atomization unit 5 External aerosol source 6 Channel 7 Outer frame 203 Power supply unit

1' Precursor Y Longitudinal axis Z Cutting point

Claims (12)

A tobacco rod for a flavor inhaler comprising a plurality of joined rod-like segments, the tobacco rod comprising:
The segment includes a cylindrical container and a flavor source containing tobacco filled in the cylindrical container, and the flavor source is filled to form a channel for distributing flavor components in the longitudinal direction. and
The tobacco rod, wherein the channels of each segment are discontinuously joined at the joint. The tobacco rod according to claim 1, for use in a direct heating type or indirect heating type flavor inhaler. The tobacco rod according to any one of claims 2 to 4, wherein the flavor source includes a flavor generating sheet with a surface treated. The tobacco rod according to claim 2 or 3, wherein the side surface of the cylindrical container is made of a material selected from the group consisting of paper, resin, metal, and combinations thereof. The tobacco rod according to any one of claims 2 to 4, wherein the side surface of the cylindrical container has a multilayer structure. The tobacco rod according to any one of claims 2 to 5, wherein the air permeability of the side surface of the cylindrical container is less than 1 Coresta unit. The tobacco rod according to any one of claims 2 to 6, wherein the flavor source includes a plurality of strip-shaped flavor generating sheets, and the longitudinal direction of the sheets is substantially parallel to the longitudinal direction of the cylindrical container. A tobacco rod according to any of claims 2 to 7, wherein the flavor source comprises an aerosol source that generates an aerosol. A method for manufacturing a tobacco rod according to any one of claims 1 to 8, comprising:
A precursor comprising a cylindrical container and a flavor source containing tobacco filled in the cylindrical container, the flavor source being filled to form a channel for distributing flavor components in the longitudinal direction. The process of preparing the body,
cutting the precursor in a direction perpendicular to the longitudinal direction to prepare two or more of the segments;
A method of manufacturing comprising the step of circumferentially rotating one or more of the segments about a longitudinal axis. A direct heating type or indirect heating type flavor inhaler comprising the tobacco rod according to any one of claims 1 to 8. The flavor inhaler according to claim 10, further comprising an aerosol source that generates an aerosol upstream of the tobacco rod. An ultrasonic vibration type flavor inhaler comprising the tobacco rod according to claim 1.