Heated aerosol delivery article and heated product

Abstract

To provide a technique having excellent aerosol delivery amount and allowing smooth insertion of a heater into a tobacco filler, in a heated tobacco comprising a tobacco rod including the tobacco filler containing a tobacco raw material and an aerosol-generating substrate, and a wrapping paper for wrapping the tobacco filler, and production method thereof.SOLUTION: A heated tobacco comprises a tobacco rod including a tobacco filler and a wrapping paper for wrapping the tobacco filler, where the tobacco filler includes an aerosol-generating substrate, a tobacco material, and a plurality of tobacco strands having a strand shape. The plurality of tobacco strands are aligned and arranged to extend along a longitudinal direction of the tobacco rod.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a heated tobacco product, a method and an apparatus for manufacturing a tobacco rod for a heated tobacco product. [Background technology]

[0002] There is known a heated tobacco product having a tobacco rod formed by filling the inside of a cigarette paper with a tobacco filler material containing tobacco raw materials (e.g., tobacco shreds, tobacco granules, reconstituted tobacco material, etc.) and an aerosol-generating base material (glycerin, propylene glycol, etc.) (see, for example, Patent Document 1). This type of heated tobacco product is a type of tobacco article in which the tobacco filler is heated by a heater in a heating device without being burned, and the aerosol generated in the tobacco filler is delivered to the user. Heaters of various shapes, such as blade-shaped and rod-shaped heaters, have been put into practical use, and when in use, the tobacco rod is attached to the heating device by inserting the heater from the tip surface of the tobacco rod. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5920744 [Patent Document 2] Patent No. 6000451 [Patent Document 3] Patent No. 6017546 [Patent Document 4] Japanese Patent Application Publication No. 62-272962 Summary of the Invention [Problem to be solved by the invention]

[0004] Here, in the tobacco rod of a conventional heated tobacco product, the tobacco raw material in the tobacco filler is randomly oriented, so that when the heated tobacco product is attached to a heating device, it may be difficult to smoothly insert the heater into the tobacco filler. Furthermore, when a tobacco rod of a heated tobacco product is formed using a tobacco filler in which the tobacco raw material is randomly oriented, the aerosol generated by the volatilization of the aerosol-generating base material is exposed to the low-temperature portion of the randomly oriented tobacco raw material and is easily condensed or filtered by the tobacco raw material, which may reduce the amount of aerosol delivered to the oral cavity.

[0005] The present invention has been made in consideration of the above-mentioned situation, and its object is to provide a technology for a heated tobacco comprising a tobacco filler containing tobacco raw materials and an aerosol-generating substrate, and a tobacco rod having cigarette paper around which the tobacco filler is wound, and a manufacturing method thereof, which provides an excellent aerosol delivery rate and enables smooth insertion of a heater into the tobacco filler. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention employs a structure in which a large number of long tobacco strands, obtained by forming tobacco raw material into strands, are arranged so as to extend along the longitudinal axis of a tobacco rod.

[0007] More specifically, the present invention relates to a method for producing a tobacco rod for a heat-not-burn tobacco product, the method comprising the steps of: conveying a tobacco raw material sheet along a conveying path while continuously cutting the tobacco raw material sheet into a plurality of continuous tobacco strands along the conveying path; and wrapping the plurality of continuous tobacco strands obtained in the cutting step in a state of being aligned along the conveying path with cigarette paper to form a continuous rod-shaped tobacco rod. and a cutting step of cutting the tobacco rod continuous body obtained in the forming step into individual tobacco rods.

[0008] Here, the tobacco raw material sheet may be obtained by forming a tobacco raw material containing an aerosol-generating base material into a sheet shape.

[0009] In addition, the tobacco raw material sheet may be wound around a bobbin, and the tobacco raw material sheet continuously unwound from the bobbin may be transported along a transport path.

[0010] In the method for producing a tobacco rod for a heat-not-burn tobacco product, the cutting step may involve cutting the tobacco raw material sheet so as to obtain a plurality of continuous tobacco strands, each having a uniform width.

[0011] In addition, the manufacturing method for producing a tobacco rod for a heated tobacco product may further include a calendaring process for increasing the density of the tobacco raw material sheet by performing a calendaring process on the tobacco raw material sheet, and in the cutting process, while transporting the tobacco raw material sheet after the calendaring process along a transport path, the tobacco raw material sheet may be continuously cut along the transport path into a plurality of strand-shaped tobacco strand continua.

[0012] Furthermore, the method for producing a tobacco rod for a heated tobacco product may further include an adding step of adding at least one of a flavoring and an aerosol-generating substrate to the continuous tobacco strands obtained in the cutting step. In this case, the adding step may include adding at least one of a flavoring and an aerosol-generating substrate to the continuous tobacco strands during the process of wrapping the continuous tobacco strands with the cigarette paper in the shaping step.

[0013] The present invention also provides a manufacturing apparatus for manufacturing a tobacco rod for a heated tobacco product, the manufacturing apparatus comprising: a bobbin around which a tobacco raw material sheet is wound; a cutting section, which is disposed on a transport path for the tobacco raw material sheet continuously unwound from the bobbin, and which cuts the tobacco raw material sheet continuously along the transport path into a plurality of continuous tobacco strands in the form of strands; a forming section, which is disposed on the transport path downstream of the cutting section, and which forms a rod-shaped continuous tobacco rod by wrapping the plurality of continuous tobacco strands in cigarette paper while aligned along the transport path; and a cutting section, which is disposed on the transport path downstream of the forming section, and which cuts the continuous tobacco rod into individual tobacco rods having predetermined lengths.

[0014] Here, the cutting section may cut the tobacco raw material sheet so as to obtain a plurality of continuous tobacco strands, each having a constant width.

[0015] In addition, the cutting section may have a cutter arranged parallel to the conveying path, and the tobacco raw material sheet may be continuously cut into a plurality of continuous tobacco strands by the cutter as the tobacco raw material sheet passes along the conveying path.

[0016] The present invention also provides a heated tobacco product comprising a tobacco rod having a tobacco filler and a cigarette paper around which the tobacco filler is wound, the tobacco filler having a plurality of tobacco strands each having a strand shape and including an aerosol-generating base material and a tobacco raw material, the plurality of tobacco strands being aligned and arranged so as to extend along the longitudinal direction of the tobacco rod.

[0017] Here, the tobacco strands may be arranged parallel to each other along the longitudinal direction of the tobacco rod.

[0018] The tobacco strand may be disposed to extend from the front end to the rear end of the tobacco rod.

[0019] The tobacco strand may also have a rectangular shape.

[0020] The tobacco strand may have a rectangular cross section perpendicular to its longitudinal axis.

[0021] Furthermore, the tobacco strand may have a cross section perpendicular to its longitudinal direction with a width of 0.4 mm or more and 3 mm or less.

[0022] Furthermore, the tobacco strand may have a cross-sectional thickness perpendicular to its longitudinal direction of 0.02 mm or more and 1.3 mm or less.

[0023] Furthermore, the tobacco strand may have a length dimension along its longitudinal axis of 10 mm or more and 50 mm or less.

[0024] The tobacco rod may have a diameter of 5 mm or more and 8 mm or less.

[0025] Furthermore, the tobacco strand may have a cross-sectional area perpendicular to its longitudinal direction that is uniform throughout its entire length.

[0026] The content of the aerosol-generating substrate in the tobacco rod may be 10 wt % or more and 25 wt % or less.

[0027] In addition, the heated tobacco has a mouthpiece portion coaxially connected to the base end side of the tobacco rod, and the mouthpiece portion may include a cooling portion for cooling the volatile substance released from the aerosol-generating substrate.

[0028] The mouthpiece portion may also include a support portion disposed at a connection end connected to the base end side of the tobacco rod for preventing the tobacco strand from being pushed into the area on the mouthpiece portion side.

[0029] The mouthpiece may also include a filter disposed on the mouth end side of the mouthpiece.

[0030] In addition, the volumetric filling rate of the tobacco strands in the tobacco rod is 50 vol % or more. It may be 80 vol % or less.

[0031] In addition, when the heater of the heating device to which the heated tobacco is applied is an external heating heater, the volume filling rate of the tobacco strands occupying the tobacco rod may be 60 vol% or more and 80 vol% or less.

[0032] In addition, when the heater of the heating device to which the heated tobacco is applied is an internal heating heater, the volume filling rate of the tobacco strands occupying the tobacco rod may be 50 vol% or more and 75 vol% or less.

[0033] The present invention may also be a heated tobacco product including any of the above-mentioned heated tobacco products and a heating device to which the heated tobacco is applied.

[0034] In the heated tobacco product of the present invention, the heating device has a rod accommodating section into which the tobacco rod of the heated tobacco product can be attached, and a heater provided in the rod accommodating section, and when the heater is an internal heating heater that is inserted from the tip side of the tobacco rod when the tobacco rod is attached to the rod accommodating section, when the tobacco rod is attached to the rod accommodating section, the volume filling rate of the tobacco strands occupying the tobacco rod may be 60 vol% or more and 80 vol% or less.

[0035] In the heated tobacco product according to the present invention, the ratio of the maximum diameter of the heater to the diameter of a cross section perpendicular to the longitudinal axis of the tobacco rod may be 0.3 or more and 0.6 or less.

[0036] The means for solving the problems in the present invention can be adopted in combination as far as possible. Effect of the Invention

[0037] According to the present invention, in a heated tobacco product comprising a tobacco filler containing tobacco raw materials and an aerosol-generating substrate, and a tobacco rod having cigarette paper around which the tobacco filler is wound, a technology can be provided that has an excellent aerosol delivery rate, enables smooth insertion of a heater into the tobacco filler, and prevents the tobacco raw materials from being pushed into the tobacco filler by the heater when the heater is inserted into the tobacco filler. [Brief description of the drawings]

[0038] [Figure 1] FIG. 1 is a diagram illustrating a schematic internal structure of a heated tobacco product according to a first embodiment. [Diagram 2] FIG. 2 is a perspective view showing an example of a tobacco strand. [Diagram 3] FIG. 3 is a schematic diagram of a heating device to which a heated tobacco product is applied. [Figure 4] FIG. 4 is a diagram showing a modified example of a heating device to which a heated tobacco product is applied. [Diagram 5] FIG. 5 is a diagram showing a tobacco rod manufacturing apparatus according to the first embodiment. [Figure 6] FIG. 6 is a diagram showing a method for producing a tobacco rod in the first embodiment. [Figure 7] FIG. 7 is a diagram showing the detailed structure of the slitter in the cutting section. [Figure 8] FIG. 8 is a diagram illustrating the calendar treatment of the tobacco raw material sheet. [Figure 9] FIG. 9 is a diagram illustrating a method for producing a tobacco raw material sheet by a papermaking method. [Figure 10] FIG. 10 is a diagram illustrating a method for producing a tobacco raw material sheet by a casting method. [Figure 11] FIG. 11 is a diagram showing a tobacco strand according to a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0039] Here, an embodiment of the heat-not-burn tobacco, the manufacturing method and the manufacturing device for the tobacco rod in the heat-not-burn tobacco according to the present invention will be described with reference to the drawings. Note that the dimensions, materials, shapes, relative positions, etc. of the components described in the present embodiment are not intended to limit the technical scope of the invention, unless otherwise specified.

[0040] <Embodiment 1> [Heated tobacco] FIG. 1 is a diagram showing a schematic internal structure of a heat-not-burn tobacco product 1 according to embodiment 1. The heat-not-burn tobacco product 1 heats a tobacco filler without burning it, and uses the tobacco filler generated in the tobacco filler. A type of tobacco article that delivers an aerosol of the tobacco product to the user.

[0041] The heated tobacco 1 includes a tobacco rod 2 and a mouthpiece 3, which are arranged coaxially. The heated tobacco 1 has a mouth end 1a that is inserted into the mouth of a user during use, and a tip 1b at the end opposite to the mouth end 1a. The mouthpiece 3 includes a support 4, a cooling unit 5, and a filter unit 6, which are arranged coaxially, and these members are arranged in order from the tip of the mouthpiece 3. The support 4, the cooling unit 5, and the filter unit 6 of the mouthpiece 3 are integrally wound by a wrapper 7. Furthermore, the tobacco rod 2 and the mouthpiece 3 are connected together by being wound by a tipping paper 8. However, the support 4, the cooling unit 5, and a part of the filter unit 6 that constitute the mouthpiece 3 may be integrally wound by a wrapper. In that case, the parts integrally wound by the wrapper and the other parts may be wound by one or more pieces of tipping paper. The reference symbol CL1 shown in FIG. 1 is the central axis of the heated tobacco 1. Here, the tobacco rod 2 and the mouthpiece portion 3 of the heated tobacco product 1 are coaxially arranged, and the central axis CL1 can be said to be the central axis of the tobacco rod 2 and the mouthpiece portion 3. Moreover, reference symbol 2a in FIG. 1 denotes a front end surface of the tobacco rod 2, and reference symbol 2b denotes a rear end surface of the tobacco rod 2.

[0042] When the heated tobacco product 1 is used, air is drawn by the user through the heated tobacco product 1 from the tip 1b to the mouth end 1a. The tip 1b of the heated tobacco product 1 can be regarded as the tip or upstream end of the tobacco rod 2, and the mouth end 1a of the heated tobacco product 1 can be regarded as the rear end or downstream end of the mouthpiece portion 3.

[0043] The tobacco rod 2 is disposed at the tip 1b of the heated tobacco 1. The tobacco rod 2 is a rod-shaped member wrapped in cigarette paper 22 so as to cover the side of a tobacco filler 21 containing tobacco raw materials and an aerosol-generating substrate. In this embodiment, the tobacco filler 21 has a plurality of tobacco strands 23 in the form of a strand, which is a tobacco raw material containing an aerosol-generating substrate. In this specification, the term "strand-shaped" refers to a long and slender shape extending in a long axis direction perpendicular to the cross-sectional direction compared to a cross section, and includes, for example, a belt-like, rectangular, string-like, rod-like, and other shapes. In addition, the term "strand-shaped" is not limited to a shape extending linearly in the long axis direction, and may extend in a meandering or wavy shape. In addition, the aerosol-generating substrate contained in the tobacco strands 23 of the tobacco filler 21 is a substance that generates an aerosol when a volatile substance that is volatilized and released when heated by a heater is cooled. The type of the aerosol-generating substrate is not particularly limited, and various extracted substances from natural products can be appropriately selected according to the application. Examples of the aerosol-generating base material include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof. The tobacco strands 23 of the tobacco filler 21 may contain a flavoring. The type of flavoring is not particularly limited. In the present embodiment, the content of the aerosol-generating base material in the tobacco rod 2 may be 10 wt % or more and 25 wt % or less.

[0044] FIG. 2 is a perspective view showing an example of a tobacco strand 23. In the example shown in FIG. 2, the tobacco strand 23 has a rectangular shape (for example, a thin rectangular parallelepiped shape). As shown in FIG. 2, the tobacco strand 23 can also be regarded as having a band shape. In the tobacco filler 21 of the tobacco rod 2 in this embodiment, a large number (plurality) of tobacco strands 23 are oriented and arranged, and each tobacco strand 23 is aligned so as to extend along the longitudinal direction (the direction of the central axis CL1) of the tobacco rod 2. In the tobacco strand 23, a cross section perpendicular to the longitudinal direction is rectangular.

[0045] 2 indicates a front end surface of the tobacco strand 23, and reference symbol 23b indicates a rear end surface of the tobacco strand 23. The front end surface 23a of the tobacco strand 23 is the end surface facing the tip 1b of the tobacco heat-not-burn 1, and the rear end surface 23b of the tobacco strand 23 is the end surface facing the tip 1b of the tobacco heat-not-burn 1. It is the end face opposite to the front end face 23a in the longitudinal direction (extension direction) of the strand 23. In this embodiment, the rear end face 23b of the tobacco strand 23 is disposed opposite to the front end face 23a of the support part 4 disposed at the front end of the mouthpiece part 3. Moreover, reference symbol 23c shown in FIG. 2 is a side face of the tobacco strand 23. The tobacco strand 23 shown in FIG. 2 has the same width and thickness dimensions from the front end face 23a to the rear end face 23b. In other words, the tobacco strand 23 shown in FIG. 2 has a uniform cross-sectional area over its entire length.

[0046] As shown in FIG. 1, the tobacco strands 23 are aligned so as to extend along the longitudinal direction of the tobacco rod 2, and are disposed with their side surfaces 23c facing each other. In the example shown in FIG. 1, the tobacco strands 23 are disposed parallel to each other along the longitudinal direction of the tobacco rod 2. Moreover, the tobacco strands 23 are disposed extending from the front end surface 2a to the rear end surface 2b of the tobacco rod 2. Moreover, the reference numeral 25 shown in FIG. 1 denotes an aerosol flow path formed by the gaps between the tobacco strands 23. In this embodiment, since the tobacco strands 23 are disposed parallel to each other along the longitudinal direction of the tobacco rod 2, for example, the aerosol flow path 25 is formed extending along the longitudinal direction of the tobacco rod 2.

[0047] Here, the details of the manufacturing method of the tobacco strand 23 and the tobacco rod 2 including the same will be described later, but for example, the tobacco strand 23 can be obtained by cutting a tobacco raw material sheet obtained by forming a tobacco raw material containing an aerosol-generating substrate into a sheet shape by slitting it with a slitter or the like. The tobacco raw material sheet may be a so-called reconstituted tobacco sheet. The reconstituted tobacco sheet may be, for example, a homogenized tobacco sheet to which additives such as a binder, a gelling agent, a crosslinking agent, a flavoring, a viscosity modifier, a moisturizing agent, a reinforcing material, etc. are added and kneaded, and then formed into a sheet shape and dried by an appropriate method such as a papermaking method (papermaking method), a casting method (slurry method), a rolling method, or an extrusion method. The homogenized tobacco is a tobacco material obtained by, for example, crushing, grinding, and mixing leaf tobacco, dried tobacco leaves, cut tobacco, expanded tobacco, reconstituted tobacco, etc.

[0048] Next, the mouthpiece section 3 will be described. The support section 4 is located on the front end side of the mouthpiece section 3, and is a segment located at the connection end where the mouthpiece section 3 is connected to the tobacco rod 2. The support section 4 is located immediately downstream of the tobacco rod 2, and is arranged in a state of abutting against the rear end of the tobacco rod 2. The support section 4 may be, for example, a hollow cellulose acetate tube. In other words, the support section 4 may be a cylindrical cellulose acetate fiber bundle with a center hole formed through the center of the cross section. In addition, the support section 4 may be in another form, such as a paper filter filled with cellulose fibers, a paper tube, etc. Any paper tube having a certain thickness can be effectively made to function as the support section 4. The support section 4 is a segment for preventing the tobacco filler 21 from being pushed downstream toward the cooling section 5 in the heated tobacco 1 when an electric heater of a heating device to which the heated tobacco 1 is applied is inserted into the tobacco rod 2. The support section 4 also functions as a spacer for separating the cooling section 5 of the heated tobacco 1 from the tobacco rod 2.

[0049] The cooling section 5 is located immediately downstream of the support section 4 and is disposed in contact with the rear end of the support section 4. When the heated tobacco 1 is in use, the volatile substances released from the tobacco rod 2 (tobacco filler 21) flow downstream along the cooling section 5. The volatile substances released from the tobacco rod 2 (tobacco filler 21) are cooled by the cooling section 5 to form an aerosol that is inhaled by the user. In the embodiment shown in FIG. 1, the cooling section 5 is formed of a hollow paper tube having an air hole 5a that can introduce outside air. However, the cooling section 5 does not have to have the air hole 5a. The cooling section 5 may also have a heat absorbing agent that is arranged so as not to interfere with the flow of the volatile substances and aerosol. For example, the cooling section may be formed of a filter material in which a large number of flow paths (through holes) are formed along the longitudinal direction (axial direction) of the mouthpiece section 3. 5 may be formed.

[0050] The filter section 6 is a segment located at the rear end of the mouthpiece section 3, that is, on the mouth end 1a side. The filter section 6 may be located immediately downstream of the cooling section 5 and may be disposed in contact with the rear end of the cooling section 5. In the embodiment shown in FIG. 1, the filter section 6 may be provided with a filter material formed of cellulose acetate fibers formed into a cylindrical shape, for example. The filter section 6 may also be a center hole filter, a paper filter filled with cellulose fibers, or a paper tube without a filter material. The filter section 6 may be formed of any of a solid filter material having a filter material, a center hole filter, a paper filter, and a paper tube without a filter material, or may be formed by selectively combining a plurality of these.

[0051] FIG. 3 is a schematic diagram of a heating device 100 to which the heated tobacco product 1 according to the first embodiment is applied. The heating device 100 has a housing 102, which is a case for accommodating various components. An electric heater 103, a controller (control unit) 104, a power source 105, and the like are accommodated in the housing 102. The housing 102 has a storage cavity 107 including an opening 106 into which the tobacco rod 2 of the heated tobacco product 1 is inserted. The storage cavity 107 is a cylindrical hollow portion for accommodating the tobacco rod 2, and corresponds to a rod storage portion into which the tobacco rod 2 can be attached. The present invention can also be provided as a heated tobacco product including the heated tobacco product 1 and the heating device 100 to which the heated tobacco product 1 is applied.

[0052] As shown in FIG. 3, an electric heater 103 is provided in the accommodating cavity 107. The electric heater 103 shown in FIG. 3 has a cylindrical shape and is vertically protruded from the center of the bottom 107a of the accommodating cavity 107 toward the opening 106. However, the shape of the electric heater 103 is not particularly limited. For example, the tip side of the electric heater 103 may be pointed. For example, the electric heater 103 may have a conical shape and gradually taper from the base end connected to the bottom 107a of the accommodating cavity 107 toward the tip side. In addition, the electric heater 103 may have a truncated cone shape (truncated cone shape) or a blade shape. In addition, the electric heater 103 may have other shapes. In this embodiment, the central axis of the electric heater 103 may be coaxial with the central axis of the accommodating cavity 107. The type of electric heater 103 is not particularly limited, but may be, for example, a steel material with heating wires (e.g., nichrome, iron chrome, iron nickel, etc.) stretched around it, or a ceramic heater, sheathed heater, etc. A sheathed heater is a heater in which heating wires are arranged together with a filler. It is a heater covered with a metal pipe.

[0053] The electric heater 103 of the heating device 100 configured as described above is a so-called internal heating heater. That is, when the tobacco rod 2 is attached to the storage cavity 107 during use of the heated tobacco 1, the electric heater 103 is fitted or inserted into the tobacco filler 21 from the front end surface 2a side of the tobacco rod 2 in the heated tobacco 1, and the tobacco filler 21 is heated from the inside by the heated electric heater 103. The controller (control unit) 104 controls the supply of electricity from the power source 105 to the electric heater 103, and the electric heater 103 generates heat to heat the tobacco filler 21 (tobacco strand 23) of the tobacco rod 2 attached to the storage cavity 107. As a result, the aerosol generating base material contained in the tobacco filler 21 (tobacco strand 23) volatilizes to generate aerosol, and the aerosol is supplied into the oral cavity of the user inhaling the mouthpiece portion 3.

[0054] According to the heat-not-burn tobacco 1 of the present embodiment, each tobacco strand 23 in the tobacco rod 2 is arranged so as to extend along the longitudinal direction (the direction of the central axis CL1) of the tobacco rod 2. The tobacco strands 23 are arranged facing each other, and each of the tobacco strands 23 is aligned so as to extend along the longitudinal direction (the direction of the central axis CL1) of the tobacco rod 2. Furthermore, in the tobacco rod 2 of this embodiment, the aerosol flow paths 25, which are gaps between the tobacco strands 23, are formed so as to extend along the longitudinal direction of the tobacco rod 2. Therefore, the aerosol generated by the volatilization of the aerosol-generating base material contained in the tobacco strands 23 during heating by the electric heater 103 can be guided to the mouthpiece portion 3 through the aerosol flow path 25. This makes it difficult for the aerosol generated in the tobacco rod 2 to condense due to contact with the tobacco strands 23, and difficult for it to be filtered by the tobacco strands 23. Therefore, the heated tobacco product 1 of this embodiment can improve the amount of aerosol delivered to the user's oral cavity compared to the conventional method.

[0055] Furthermore, in the heated tobacco 1 of this embodiment, the tobacco strands 23 in the tobacco rod 2 are aligned along the longitudinal direction (the direction of the central axis CL1) of the tobacco rod 2, which makes it easier to fit or insert the electric heater 103 from the tip 1b side of the tobacco rod 2 compared to the conventional case in which tobacco raw materials are randomly oriented. This makes it easier to fit or insert the electric heater 103 into the tobacco rod 2, providing a heated tobacco 1 that is easy for users to use. As described above, the tobacco rod 2 of the heated tobacco 1 of this embodiment has an excellent aerosol delivery amount, and also enables the electric heater 103 to be smoothly inserted into the tobacco filler 21.

[0056] The heating device applied to the heated tobacco product 1 in this embodiment may be equipped with an external heating type heater as shown in FIG. 4, instead of the internal heating type heater as shown in FIG. 3. The heating device 100 shown in FIG. 4 has the same structure as the heating device 100 shown in FIG. 3, except that the electric heater 103 is an external heating type. The electric heater 103 shown in FIG. 4 is an annular external heating type heater formed along the cavity side peripheral wall 107b of the storage cavity 107. The electric heater 103 shown in FIG. 4 may be disposed along the cavity side peripheral wall 107A so as to be flush with the cavity side peripheral wall 107b. When the heated tobacco product 1 is applied to the heating device 100 equipped with the external heating type electric heater 103 as shown in FIG. 4, when the heated tobacco product 1 is used, the tobacco filler 21 is heated by the electric heater 103 from the outside of the tobacco rod 2 attached to the storage cavity 107.

[0057] Here, a preferred range of the volumetric filling rate of the tobacco strands 23 occupying the tobacco rod 2 will be described. The volumetric filling rate of the tobacco strands 23 referred to here refers to the ratio of the total volume of all the tobacco strands 23 contained in the tobacco rod 2 to the volume of the tobacco rod 2. If the volumetric filling rate of the tobacco strands 23 is excessively high, there is a concern that the airflow resistance of the tobacco rod 2 (tobacco filler 21) will be excessively high. As a result, there is a concern that the aerosol generated in the tobacco rod 2 during use will be filtered (captured) by the tobacco strands 23 in the tobacco rod 2 before being introduced into the mouthpiece portion 3, resulting in a reduced amount of aerosol delivered. On the other hand, if the volumetric filling rate of the tobacco strands 23 is excessively low, there is a concern that the efficiency of heat transfer to the tobacco strands 23 during heating by the electric heater 103 will decrease, resulting in a reduced amount of aerosol delivered. For example, when using the internal heating type electric heater 103 shown in Figure 3, when the electric heater 103 is inserted into the tobacco rod 2, there is a risk that the contact between the electric heater 103 and the tobacco strand 23 will be insufficient, resulting in insufficient heating of the tobacco strand 23.

[0058] Taking the above circumstances into consideration, the present inventors have conducted extensive research and found that it is preferable to set the volumetric filling rate of the tobacco strands 23 in the tobacco rod 2 to 50 vol% or more and 80 vol% or less. This makes it possible to prevent the airflow resistance of the tobacco rod 2 (tobacco filler 21) from becoming excessively high, while also preventing a decrease in the efficiency of heat transfer from the electric heater 103 to the tobacco strands 23. As a result, the amount of aerosol delivered during use is In addition, if the volumetric filling rate of the tobacco strands 23 is lower than 50 vol %, the efficiency of heat transfer from the electric heater 103 to the tobacco strands 23 decreases. In addition, there is a risk that the manufacturing suitability of the tobacco rod 2 may be reduced. In addition to the above-mentioned problems, the tobacco strands 23 may be difficult to insert into the tobacco rod 2, and the aerosol may be easily trapped on the way, resulting in a decrease in the efficiency of delivery of the aerosol. For these reasons, the volumetric filling rate of the tobacco strands 23 occupying the tobacco rod 2 is set to 50 vol % or more. It is preferable that the range is 80 vol % or less.

[0059] Here, the preferred range of the volumetric filling rate of the tobacco strands 23 occupying the tobacco rod 2 differs depending on the heating method (internal heating heater, external heating heater) of the electric heater 103 of the heating device 100 to which the heated tobacco 1 is applied. Furthermore, when the electric heater 103 is of an internal heating type, the preferred range of the volumetric filling rate of the tobacco strands 23 also differs depending on whether the electric heater 103 is inserted into the tobacco rod 2 (the tobacco rod 2 is attached to the heating device 100). For example, when the electric heater 103 of the heating device 100 to which the heated tobacco 1 is applied is an external heating heater, the volumetric filling rate of the tobacco strands 23 occupying the tobacco rod 2 is preferably 60 vol% or more and 80 vol% or less.

[0060] In addition, when the electric heater 103 of the heating device 100 to which the heated tobacco product 1 is applied is an internal heating heater, the volumetric filling rate of the tobacco strands 23 occupying the tobacco rod 2 is preferably 50 vol% or more and 75 vol% or less, and more preferably 60 vol%. The volume filling rate described above refers to a preferred range of the volume filling rate of the tobacco strand 23 before the tobacco rod 2 is attached to the storage cavity 107 of the heating device 100. When the electric heater 103 is an internal heating type heater, the tobacco strand 23 in the tobacco rod 2 is pushed and spread toward the outer periphery of the tobacco rod 2 by the electric heater 103 when the electric heater 103 is inserted into the tobacco rod 2. Taking this into consideration, the preferred range of the volume filling rate of the tobacco strand 23 (50 vol% or more and 75 vol% or less) when the electric heater 103 of the heating device 100 to which the heated tobacco product 1 is applied is an internal heating type heater is lower than the preferred range of the volume filling rate of the tobacco strand 23 (60 vol% or more and 80 vol% or less) when the electric heater 103 is an external heating type heater.

[0061] When the electric heater 103 of the heating device 100 to which the heated tobacco product 1 is applied is an internal heating heater, it is preferable that the volumetric filling rate of the tobacco strand 23 in a state in which the tobacco rod 2 is attached to the accommodating cavity 107, i.e., in a state in which the internal heating heater is inserted into the tobacco rod 2, is 60 vol% or more and 80 vol% or less. Here, the volumetric filling rate of the tobacco strand 23 in a state in which the tobacco rod 2 is attached to the accommodating cavity 107 refers to the ratio of the sum of the volumes of the tobacco strands 23 to the volume calculated by subtracting the volume of the tobacco rod 2 occupied by the electric heater 103 from the volume of the tobacco rod 2.

[0062] Furthermore, when comparing under conditions where the volumes of the tobacco strands 23 contained in the tobacco rod 2 in this embodiment are equal, the greater the surface area of ​​the tobacco strands 23, the greater the aerosol delivery amount. If the width of each tobacco strand 23 is large, when the internally heated electric heater 103 is inserted into the tobacco rod 2, the volume filling rate of the tobacco strands 23 is likely to be non-uniform within the cross section of the tobacco rod 2, and there is a concern that the aerosol delivery characteristics will be more likely to vary. Therefore, from the perspective of increasing the aerosol delivery amount and making the aerosol delivery characteristics uniform, it is preferable to arrange more tobacco strands 23 with smaller cross-sectional areas in the tobacco rod 2. However, if the cross-sectional area of ​​the tobacco strands 23 is made excessively small, the tensile strength of the tobacco strands 23 will decrease, and There is a concern that the time required for the aerosol to be delivered may be too long, which may reduce the manufacturing suitability of the tobacco rod 2. From the viewpoint of ensuring a good balance between the improvement of the aerosol delivery amount, the uniform delivery of the aerosol, and the improvement of the manufacturing suitability of the tobacco rod 2, it is preferable that the width dimension of the cross section of the tobacco strand 23 is 0.4 mm or more and 3 mm or less, and the thickness dimension of the cross section of the tobacco strand 23 is 0.02 mm or more and 1.3 mm or less. In one example, the length dimension of the tobacco strand 23 along the major axis direction is 10 mm or more and 50 mm or less. As described above, the tobacco strand 23 in this embodiment has a uniform cross-sectional area over its entire length, and therefore, when heated by the electric heater 103, the amount of aerosol generated in the major axis direction of the tobacco strand 23 is less likely to vary.

[0063] In this embodiment, the dimensions of the tobacco rod 2 are not particularly limited, but an example embodiment is one in which the length in the longitudinal direction of the tobacco rod 2 is 10 mm or more and 50 mm or less, and the diameter of the cross section perpendicular to the longitudinal direction of the tobacco rod 2 is 5.0 mm or more and 8.0 mm or less. In a heating device 100 to which a heated tobacco product 1 is applied, an example embodiment is one in which the maximum diameter of the electric heater 103 is 2.5 mm or more and 3.2 mm or less. And an example embodiment is one in which the ratio of the maximum diameter of the electric heater 103 to the diameter of the cross section of the tobacco rod 2 is 0.3 or more and 0.6 or less. Another example embodiment is one in which the length in the longitudinal direction of the tobacco strand 23 arranged in the tobacco rod 2 is approximately equal to the length in the longitudinal direction of the tobacco rod 2.

[0064] <Tobacco rod manufacturing apparatus and manufacturing method> Next, a description will be given of an apparatus and method for manufacturing the tobacco rod 2 in the heat-not-burn tobacco 1. Fig. 5 is a diagram showing an apparatus for manufacturing the tobacco rod 2 (hereinafter, referred to as a "rod manufacturing apparatus") 1000 in the first embodiment. Fig. 6 is a diagram showing a method for manufacturing the tobacco rod 2 in the heat-not-burn tobacco 1.

[0065] The rod manufacturing apparatus 1000 includes a first bobbin 1100 on which a tobacco raw material sheet 200 is wound into a roll, a cutting section 1200, a shaping section 1300, a cutting section 1400, and the like. The tobacco raw material sheet 200 wound around the first bobbin 1100 is a sheet material obtained by forming a tobacco raw material containing an aerosol-generating base material into a sheet. Examples of the tobacco raw material include tobacco shreds, tobacco granules, and reconstituted tobacco material. In this embodiment, an example will be described in which a material obtained by forming reconstituted tobacco into a sheet is used as the tobacco raw material sheet 200. The tobacco raw material sheet 200 is cut in the cutting section 1200 and then cut in the cutting section 1400 to become the tobacco strands 23 of the tobacco rod 2 described above.

[0066] In the rod manufacturing apparatus 1000, the first bobbin 1100 is rotatably held by a bobbin holder 1110. The tobacco raw material sheet 200 wound around the first bobbin 1100 is continuously unwound by a feed roller disposed at an appropriate position, and sent out along a conveying path P. As shown in FIG. 5, the cutting section 1200 in the rod manufacturing apparatus 1000 is disposed in the middle of the conveying path P. In this specification, the front side along the flow direction of the conveying path P is defined as "downstream" and the rear side as "upstream". In the arrangement example shown in FIG. 5, the shaping section 1300 is disposed downstream (rear stage) of the cutting section 1200, and the cutting section 1400 is disposed further downstream (rear stage) of the shaping section 1300. In the sheet-like tobacco raw material sheet 200, the direction along the conveying path P is referred to as the "sheet length direction (longitudinal direction)", and the direction perpendicular to the conveying path P is referred to as the "sheet width direction". In the rod-making apparatus 1000, the direction perpendicular to the transport path P is referred to as the "apparatus width direction." Reference numeral 1500 in FIG. 5 denotes a transport tray extending along the transport path P. The sheet-shaped tobacco raw material sheet 200 is cut while traveling on the transport tray 1500 along the transport path P. The cross-sectional view is introduced in section 1200.

[0067] The cutting section 1200 is a unit that continuously cuts the tobacco raw material sheet 200 along a conveying path into a plurality of continuous tobacco strand bodies 300 in the form of strands. FIG. 7 is a diagram showing a detailed structure of a slitter 1210 in the cutting section 1200, showing the slitter 1210 as viewed from above. The slitter 1210 has a plurality of circular cutter discs 1220. The plurality of circular cutter discs 1220 are connected to each other at their centers by a rotating shaft member 1230. The rotating shaft member 1230 is rotatably supported on a base of the rod manufacturing apparatus 1000, and each cutter disc 1220 can rotate integrally around the rotating shaft member 1230. Here, the rotating shaft member 1230 in the slitter 1210 extends horizontally in a direction perpendicular to the conveying path P in the rod manufacturing apparatus 1000, i.e., along the device width direction. 7, each cutter disk 1220 in the slitter 1210 is disposed in a direction perpendicular to the rotating shaft member 1230 and parallel to the conveying path P. Also, each cutter disk 1220 in the slitter 1210 is disposed at regular intervals along a direction perpendicular to the conveying path P (the device width direction).

[0068] In the manufacturing method of the tobacco rod 2 in this embodiment, a tobacco raw material sheet 200 obtained by forming a tobacco raw material containing an aerosol-generating substrate into a sheet shape is transported from a first bobbin 1100 along a transport path P, and in a cutting step (S101 in FIG. 6 ), the tobacco raw material sheet 200 is continuously cut along the transport path P into a plurality of strand-shaped continuous tobacco strand bodies 300. That is, the tobacco raw material sheet 200 passes along the transport path P through a cutting section 1200 (each cutter disk 1220 arranged parallel to the transport path P), and the tobacco raw material sheet 200 is continuously cut by each cutter disk 1220 into a plurality of continuous tobacco strand bodies 300.

[0069] The slitter 1210 of the cutting section 1200 has a number of cutter disks 1220 arranged at regular intervals along a direction perpendicular to the conveying path P. Therefore, in the cutting section 1200, the tobacco raw material sheet 200 is cut into a plurality of continuous tobacco strands 300 having a constant width. The continuous tobacco strands 300 are long tobacco materials extending along the conveying path P. Note that the slitter 1210 may cut the tobacco raw material sheet 200 continuously along the conveying path P into a plurality of continuous tobacco strands 300 in the form of strands, and may cut the tobacco raw material sheet 200 using a member other than the cutter disks 1220. For example, the slitter 1210 may have a roll cutter having comb blades arranged at regular intervals along the width direction of the device.

[0070] A plurality of tobacco strand continuous bodies 300 cut from the tobacco raw material sheet 200 in the cutting section 1200 are sent to the subsequent forming section 1300 along a conveying path P in a state aligned in the width direction of the conveying tray 1500.

[0071] The forming section 1300 has a second bobbin 1310 on which a long cigarette paper web 400 is wound in a roll shape. The cigarette paper web 400 is a long web material that becomes the cigarette paper 22 of the tobacco rod 2. The forming section 1300 further includes a converging section 1320, a wrapping mechanism 1330, an adhesive applicator 1340, and the like. The converging section 1320 is disposed near the entrance of the forming section 1300, and converges a plurality of tobacco strand continuous bodies 300 fed from the upstream side to form a cylindrical shape (i.e., a rod shape). The converging section 1320 can be, for example, a combination of a tongue member and a horn, a converging funnel shape, a conveying jet shape, or the like.

[0072] The packaging mechanism 1330 in the forming section 1300 is provided after the converging section 1320. The wrapping mechanism 1330 has an endless garniture belt 1350. The garniture belt 1350 is made of a woven material or a woven web, and is driven by a driving drum 1360 to run at a constant speed in the direction of the arrow in the figure. The long wrapping web 400 unwound from the second bobbin 1310 is continuously supplied onto the garniture belt 1350 in the forming section 1300.

[0073] Meanwhile, the plurality of continuous tobacco strands 300, which have been shaped into a rod shape in the converging portion 1320 in the forming section 1300, are superimposed on the long cigarette paper web 400 on the garniture belt 1350. In the process of transporting the plurality of continuous tobacco strands 300 superimposed on the long cigarette paper web 400 on the garniture belt 1350 along the transport path P by the garniture belt 1350, the cigarette paper web 400 is wound around the outer periphery of the plurality of continuous tobacco strands 300 aligned in a rod shape, and the plurality of continuous tobacco strands 300 are enveloped by the cigarette paper web 400. An adhesive (e.g., hot melt adhesive, CMC (carboxymethyl cellulose), PVA (polyvinyl alcohol), EVA (ethylene vinyl acetate copolymer resin), etc.) is applied by an adhesive applicator 1340 to the seam formed by the overlapping edges of the cigarette paper web 400. As a result, A rod-shaped, long tobacco rod continuous body 500 is formed (forming step, S102 in FIG. 6).

[0074] The manufacturing method of the tobacco rod 2 in this embodiment may further include an addition step of adding at least one of a flavoring and an aerosol-generating substrate to the continuous tobacco strands 300 obtained in the cutting step (cutting section 1200). For example, the addition step may add at least one of a flavoring and an aerosol-generating substrate to the continuous tobacco strands 300 in the process of wrapping the continuous tobacco strands 300 with cigarette paper (cigarette paper web 400) in the molding step (molding section 1300). The method of adding the flavoring and the aerosol-generating substrate to the continuous tobacco strands 300 is not particularly limited, but the flavoring and the aerosol-generating substrate may be added to the continuous tobacco strands 300 by ejecting them from an addition nozzle. Of course, an addition nozzle for adding the flavoring and an addition nozzle for adding the aerosol-generating substrate may be provided separately. In addition, an example of the flavoring is menthol, but other flavorings may be added. As described above, when flavoring or an aerosol-generating substrate is added to the continuous tobacco strand body 300 during the process of wrapping the multiple continuous tobacco strand bodies 300 with cigarette paper (cigarette paper web 400) in the forming step (forming section 1300), an addition nozzle may be provided at an appropriate position in the forming section 1300. Furthermore, the addition nozzle that adds flavoring or an aerosol-generating substrate to the continuous tobacco strand body 300 may be provided at any position between the cutting section 1200 and the forming section 1300 on the conveying path P.

[0075] The continuous tobacco rod 500 obtained in the forming section 1300 (forming step) is sent to the cutting section 1400 located after the forming section 1300. The cutting section 1400 has cutting means such as a rotary cutter or a knife, and the long continuous tobacco rod 500 is cut to a fixed length in the cutting section 1400. That is, in the cutting step (S103 in FIG. 6), the continuous tobacco rod 500 obtained in the forming step (S102 in FIG. 6) is cut into individual tobacco rods in sequence, thereby obtaining tobacco rods for the heat-not-burn tobacco 1. As is clear from the above explanation, the multiple continuous tobacco strands 300 cut from the tobacco raw material sheet 200 in the cutting section 1200 are connected along the conveying direction in the conveying path P until they are cut in the axial direction in the cutting section 1400.

[0076] As described above, according to the tobacco rod 2 manufacturing method and rod manufacturing apparatus 1000 of the present embodiment, the tobacco rod 2 related to the heat-not-burn tobacco product 1 can be suitably manufactured. In particular, the manufacturing method of the tobacco rod 2 and the rod manufacturing apparatus 1000 in this embodiment are characterized in that, after the tobacco raw material sheet 200 is continuously cut into a plurality of continuous tobacco strands 300 in the cutting section 1200, the continuous tobacco strands 300 aligned along the transport path P are wrapped in cigarette paper (cigarette paper web 400) in the forming section 1300 before being cut into short pieces in the cutting section 1400, and formed into a long continuous tobacco rod 500. In this manner, the plurality of tobacco strands 23 can be aligned and arranged so that the plurality of tobacco strands 23 extend along the axial direction of the tobacco rod 2. In other words, a tobacco rod 2 in which the plurality of tobacco strands 23 are arranged parallel to one another along the longitudinal axis of the tobacco rod 2 can be easily manufactured.

[0077] In the rod manufacturing apparatus 1000, the tobacco strand 23 having a desired thickness can be obtained by adjusting the thickness of the tobacco raw material sheet 200 wound around the first bobbin 1100. In addition, the tobacco strand 23 having a desired width can be obtained by adjusting the interval between the cutter disks 1220 in the slitter 1210 arranged in the cutting section 1200. In this embodiment, the tobacco raw material sheet 200 is cut into a plurality of tobacco strand continua 300 each having a constant width in the cutting section 1200 (cutting step), so that the cross-sectional area (width dimension) of each tobacco strand 23 arranged in the tobacco rod 2 can be made uniform. This makes it easier to prevent the occurrence of locations with non-uniform aerosol delivery characteristics in the cross section of the tobacco rod 2 when the heated tobacco 1 is used, and allows aerosol to be stably supplied to the user.

[0078] Furthermore, the manufacturing method of the tobacco rod 2 in this embodiment may include a calendaring process in which the tobacco raw material sheet 200 used to manufacture the tobacco rod 2 is subjected to a calendaring process in advance to increase the density of the tobacco raw material sheet 200, and a winding process in which the tobacco raw material sheet 200 after the calendaring process is wound around the first bobbin 1100.

[0079] FIG. 8 is a diagram illustrating the calendaring of the tobacco raw material sheet 200. The calendaring is performed by continuously passing the tobacco raw material sheet 200 between a pair of press rollers 600, 600 as shown in FIG. 7, for example, to press the tobacco raw material sheet 200. By performing the calendaring of the tobacco raw material sheet 200, the tobacco raw material sheet 200 becomes dense, and its density can be increased. As a result, the weight of the tobacco strands 23 can be increased while preventing the volumetric filling rate of the tobacco strands 23 contained in the manufactured tobacco rod 2 from becoming excessively high, and preventing the airflow resistance of the tobacco rod 2 from becoming excessively high. As a result, the amount of aerosol delivered in the tobacco rod 2 can be further increased.

[0080] After the above-described calendaring process, the tobacco raw material sheet 200 is wound onto a first bobbin 1100 in a winding process. The tobacco raw material sheet 200 wound onto the first bobbin 1100 is continuously drawn out along the transport path P as described with reference to Figures 5 and 6, and is used to manufacture a tobacco rod 2.

[0081] As for the manufacturing method of the tobacco raw material sheet 200, any suitable method can be used, such as the papermaking method (papermaking method), the casting method (slurry method), the rolling method, the extrusion method, or the like, as described above.

[0082] 8 is a diagram illustrating a method for producing a tobacco raw material sheet 200 by a papermaking method (papermaking method). As shown in FIG. 8, first, in step S201, tobacco midribs, tobacco rinds, and Tobacco raw materials containing mint, tobacco shreds, tobacco powder, etc. are extracted with water (extraction process). In the extraction process, for example, 10 times the amount of water is added to the tobacco raw materials, and the mixture is heated at a specified temperature for a specified time while stirring to obtain a mixture. Then, in step S202, the mixture obtained in the extraction process is squeezed, for example, using a screw press dehydrator, etc., to separate it into an aqueous tobacco extract (liquid) and an insoluble tobacco residue (solid) (separation process). Next, in step S203, water and pulp (cellulose fiber) are added to the insoluble tobacco residue obtained in the separation process, and the insoluble tobacco residue is beaten, for example, using a refiner to adjust the fiber length and fluff the fibers to turn them into fibers (beating process).

[0083] Next, in step S204, the insoluble tobacco residue and pulp fiberized in the beating process are made into a sheet by a papermaking machine, and dried to obtain a base sheet (papermaking process). Then, in step S205, an additive liquid containing a concentrated aqueous tobacco extract obtained in the separation process and an aerosol generating base material such as glycerin or propylene glycol is added to the base sheet (aromatization process). Note that the concentrated aqueous tobacco extract added to the base sheet in the aromatization process is obtained, for example, by concentrating the aqueous tobacco extract with an evaporator. Next, in step S206, the aromatized base sheet obtained in the aromatization process is dried (drying process).

[0084] The above manufacturing method allows the tobacco raw material sheet 200 to be manufactured by a papermaking method (papermaking method). However, the above manufacturing method is merely illustrative, and steps can be added, omitted, or replaced as appropriate. Note that, in the tobacco raw material sheet 200 manufactured by the papermaking method (papermaking method), an embodiment in which the content of the aerosol-generating substrate is 15.0 wt%, the content of the tobacco raw material is 79.05 wt%, and the content of the pulp is 5.95 wt% is one example, but it is of course not limited to this. Note that, in the tobacco raw material sheet 200 manufactured by the papermaking method (papermaking method), the content of the aerosol-generating substrate is preferably 10 wt% or more and 25 wt% or less.

[0085] Fig. 9 is a diagram illustrating a method for producing a tobacco raw material sheet 200 by the casting method (slurry method). As shown in Fig. 9, first, in step S301, tobacco raw material including tobacco midribs, tobacco lamina, tobacco shreds, tobacco powder, etc. is pulverized into fine powder, and then a small amount of binder (binding agent) and reinforcing agent (defibrated pulp, etc.), a predetermined amount of aerosol generating base material (glycerin, propylene glycol, etc.) and water are mixed in, for example, a stirring tank to obtain a slurry (suspension) (slurry obtaining step). Examples of binders (binding agents) include guar gum, xanthan gum, CMC (methylol cellulose), etc.

[0086] Next, in step S302, the slurry obtained in the slurry obtaining step is cast (stretched) into a sheet shape, for example, onto a steel belt (support), to obtain a slurry web (casting step). Next, in step S303, the sheet-shaped slurry web that has been stretched into a sheet shape is dried (drying step). Through the above steps, a tobacco raw material sheet 200 is obtained. Note that, in the tobacco raw material sheet 200 produced by the casting method (slurry method), an example embodiment in which the aerosol-generating base material (e.g., glycerin) content is 15.0 wt%, the tobacco raw material content is 76.0 wt%, the pulp content is 6.0 wt%, and the binder content is 3.0 wt%, is of course not limited to this.

[0087] Although the embodiment of the present invention has been described above, the heated tobacco, heated tobacco product, and manufacturing method and device for a tobacco rod in a heated tobacco according to the present invention are not limited to these. For example, in the above-mentioned Fig. 1 and Fig. 2, the tobacco strand 23 arranged in the tobacco rod 2 is described as having a straight shape without any bends, but the tobacco strand 23 may have a long and slender shape extending in the longitudinal direction, and may have any other shape. The shape of the tobacco strand 23A may be adopted. FIG. 11 is a diagram showing a tobacco strand 23A according to a modified example. The tobacco strand 23A shown in FIG. 11 has a meandering shape (zigzag shape). The tobacco strand 23A extending in a meandering shape is aligned and disposed in the tobacco rod 2 such that its long axis (extension direction) extends along the long axis direction of the tobacco rod 2. The tobacco strand 23A having such a meandering shape (zigzag shape) can prevent the tobacco strand 23A from being displaced in the long axis direction of the tobacco rod 2 even if the tobacco strand 23A is pushed by the electric heater 103 when the electric heater 103 of the heating device 100 is inserted into the tobacco rod 2. As a result, the tobacco strand 23A can be suitably prevented from coming off from the tobacco rod 2 when the electric heater 103 is inserted into the tobacco rod 2.

[0088] Furthermore, compared to the tobacco strand 23 having a straight shape shown in FIGS. 1 and 2, the tobacco strand 23A shown in FIG. 11 is relatively more susceptible to obstruction of the flow path of the aerosol generated in the tobacco rod 2 by heating with the electric heater 103; however, compared to the conventional case in which the tobacco raw material is randomly oriented, condensation and filtration of the aerosol generated in the tobacco rod 2 are relatively less likely to occur, and the amount of aerosol delivered can be improved compared to the conventional case.

[0089] In addition, when the tobacco strand 23A has a meandering shape (zigzag shape) as shown in FIG. 11, the width of the tobacco strand 23A is preferably uniform from the front end surface 23a to the rear end surface 23b. That is, as shown in FIG. 11, it is preferable that the width dimension W1 of the portion parallel to the longitudinal direction of the tobacco strand 23A is equal to the width dimension W2 of the portion extending in a direction perpendicular to the longitudinal direction. In this way, it is possible to make the cross-sectional area of ​​the tobacco strand 23A uniform over its entire length. As a result, when the tobacco strand 23A is heated by the electric heater 103, the variation in the amount of aerosol generated in the longitudinal direction of the tobacco strand 23A can be suitably suppressed. In addition, although the tobacco strand 23A shown in FIG. 11 has a meandering shape (zigzag shape), it may have a wavy shape or other shapes. [Explanation of symbols]

[0090] 1. Heated tobacco products 2. Tobacco rod 3. Mouthpiece section 4...Support part 5...Cooling section 6. Filter section 21...Tobacco filler 22... Rolling paper 23...Tobacco strands 25...Aerosol flow path 100...Heating device 103 Electric heater 200 ··· Tobacco raw material sheet 300...Tobacco strand continuum 500···Tobacco rod continuous body 1000 Rod manufacturing equipment 1100...First bobbin 1200···Cutting section 1300···Molding section 1400···Cutting section

Claims

1. A tobacco rod; a support portion disposed in contact with the rear end of the tobacco rod; A cooling portion disposed in contact with a rear end of the support portion; A filter section disposed in contact with a rear end of the cooling section; Equipped with the cooling section is a hollow tube having a through hole formed along a longitudinal direction thereof, and causes the volatile substance released from the tobacco rod to flow downstream and cools the volatile substance; The cooling unit has a vent hole through which outside air can be introduced, The ventilation hole penetrates the cooling section and is located upstream of the cooling section. Heated tobacco.

2. The support portion is a hollow tube having a center hole formed therethrough. The heated tobacco product according to claim 1 .

3. The diameter of the through hole is larger than the diameter of the center hole. The heated tobacco product according to claim 2.

4. The hollow tube forming the support portion is made of cellulose acetate, and the hollow tube forming the cooling portion is made of a filter material. The heated tobacco product according to claim 2 or 3.

5. The filter portion has a filter material formed in a cylindrical shape. The heated tobacco product according to claim 4.

6. The tobacco product according to claim 4 or 5, wherein the filter material is cellulose acetate fiber.

7. the hollow tube forming the support portion and the hollow tube forming the cooling portion are made of cellulose acetate fiber; The filter portion is formed of cellulose acetate fibers formed into a cylindrical shape. The heated tobacco product according to claim 2 or 3.

8. The tobacco rod has a plurality of tobacco raw materials each having a rectangular shape and aligned so as to extend along the longitudinal axis of the tobacco rod. The heated tobacco product according to any one of claims 1 to 7.

9. A heated tobacco product comprising the heated tobacco according to any one of claims 1 to 8 and a heating device having a storage cavity into which the heated tobacco is inserted.

10. The heated tobacco product includes a heater, and the heater heats the tobacco rod from the inside. The heated tobacco product according to claim 9.

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