JP2023054241A - Heated tobacco product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for a heated tobacco product including a tobacco rod formed by filling an inside of wrapping paper with tobacco fillers including a tobacco raw material and an aerosol generating base material, suppressing such damage that an electric heater is broken or bent when inserting the electric heater into the tobacco rod, that the tobacco fillers constituting the tobacco rod are pushed into a mouthpiece and that the tobacco rod is buckled and distorted.

SOLUTION: A heated tobacco product including a tobacco rod formed by filling an inside of wrapping paper with tobacco fillers containing shred tobacco and an aerosol generating base material, includes a heater-inserting hollow part opened to a tip surface side of the tobacco rod and extending in an axial direction of the tobacco rod for inserting a heater of a heating device.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2023,JPO&INPIT

Description

The present invention relates to heat-not-burn tobacco.

It has a tobacco rod formed by filling the inside of a wrapping paper with a tobacco filler containing a tobacco raw material (e.g., cut tobacco, tobacco granules, molded tobacco sheet, etc.) and an aerosol-generating base material (glycerin, propylene glycol, etc.). Heat-not-burn cigarettes are known (see Patent Document 1, for example). This type of heat-not-burn cigarette is a type of tobacco article in which an electric heater in a heating device heats the tobacco filler without burning it, and delivers the aerosol generated in the tobacco filler to the user. As electric heaters, heaters of various shapes such as a blade shape and a rod shape have been put into practical use, and the tobacco rod is attached to the heating device by inserting the electric heater from the tip surface of the tobacco rod during use.

Japanese Patent No. 5920744 Japanese Patent No. 5348648

However, in conventional heated cigarettes, the insertion resistance when inserting the electric heater from the tip surface of the tobacco rod is large, and damage such as breakage or bending occurs when the electric heater is inserted into the tobacco rod (tobacco filler). Otherwise, the tobacco filler constituting the tobacco rod may be pushed toward the mouthpiece, or the tobacco rod may be buckled and deformed.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heated tobacco rod having a tobacco rod formed by filling the inside of a wrapping paper with a tobacco filler containing a tobacco raw material and an aerosol-generating base material. To prevent damage such as breakage or bending of an electric heater when inserted into a tobacco rod, push of a tobacco filling material constituting the tobacco rod toward the mouthpiece, and buckling deformation of the tobacco rod. It is to provide technology for

A heat-not-burn cigarette according to the present invention for solving the above-mentioned problems is a heat-not-burn cigarette having a tobacco rod formed by filling the inside of a wrapping paper with a tobacco filler containing a tobacco raw material and an aerosol-generating base material, It is characterized by comprising a heater insertion cavity for inserting a heater of a heating device, which is open on the tip side of the tobacco rod and extends along the axial direction of the tobacco rod.

Here, the cross-sectional area perpendicular to the axial direction of the tobacco rod in the heater insertion cavity may be smaller than the cross-sectional area of each opposing portion of the heater when the heater is inserted into the tobacco rod to a specified depth. .

Further, the cross-sectional area perpendicular to the axial direction of the tobacco rod in the heater insertion cavity is 70% or more of the cross-sectional area of each opposing portion of the heater in a state where the tobacco rod is inserted to a specified depth. It may be set to be within the range of 99% or less.

Further, the heater insertion cavity may have a cylindrical shape with a diameter of 1 mm or more and 4 mm or less.

Further, the heater insertion cavity has a conical shape that tapers along the axial direction of the tobacco rod, and has a diameter of 1 mm or more and 4 mm or less at a first end position located on the tip surface side of the tobacco rod. , the diameter at a second end located on the opposite side of the tip surface may be greater than 0 mm and less than or equal to 0.5 mm.

Further, the heater insertion cavity has a truncated cone shape that tapers along the axial direction of the tobacco rod, and has a diameter of 1 mm or more and 4 mm or less at a first end position located on the tip surface side of the tobacco rod. There may be a diameter of 0.5 mm or more and 3.5 mm or less at a second end position located on the opposite side of the tip surface.

Further, the heat-not-burn cigarette has a filter coaxially connected to the proximal end of the tobacco rod, and the filter cools volatile substances released from the aerosol-generating base material contained in the tobacco filler. A cooling unit may be included for cooling.

Further, in the heated cigarette according to the present invention, the filter is arranged at a connection end connected to the base end side of the tobacco rod, and when the heater is inserted into the heater insertion cavity, the tobacco A support may be included for supporting the tobacco filler in order to prevent the filler from being pushed toward the mouth end of the filter.

Moreover, in the heating-type cigarette according to the present invention, the filter may include a mouthpiece portion arranged on the mouth end side of the filter.

Further, the heater insertion cavity may be formed as a through-hole that penetrates the tobacco rod, or may be formed as a recess that does not penetrate the tobacco rod.

It should be noted that the means for solving the problems in the present invention can be employed in combination as much as possible.

According to the present invention, in a heated cigarette having a tobacco rod formed by filling the inside of a wrapping paper with a tobacco filler containing a tobacco raw material and an aerosol-generating base material, the electric heater folds and bends when inserted into the tobacco rod. It is possible to provide a technique for suppressing damage such as the occurrence of such damage, pushing the tobacco filler constituting the tobacco rod toward the mouthpiece, and suppressing the buckling deformation of the tobacco rod.

FIG. 1 is a diagram schematically showing the internal structure of a heat-not-burn cigarette according to Embodiment 1. FIG. FIG. 2 is a diagram showing the details of the tobacco rod in the heated tobacco. FIG. 3 is a schematic configuration diagram of a heating device to which heated tobacco is applied. FIG. 4 is a diagram showing a state in which the electric heater is inserted into the tobacco rod to a specified depth when the tobacco rod is mounted in the housing cavity of the heating device. FIG. 5 is a diagram illustrating a tobacco rod according to a first modified example. FIG. 6 is a diagram showing a state in which a tobacco rod according to a first modified example is attached to an accommodation cavity in a heating device. FIG. 7 is a diagram illustrating a tobacco rod according to a second modified example. FIG. 8 is a diagram showing a state in which a tobacco rod according to a second modification is attached to an accommodation cavity in a heating device. FIG. 9A is a diagram illustrating a heater insertion cavity according to a third modification. FIG. 9B is a diagram illustrating a heater insertion cavity according to a fourth modification. FIG. 9C is a diagram illustrating a heater insertion cavity according to a fifth modification.

Here, an embodiment of a heat-not-burn cigarette according to the present invention will be described based on the drawings. It should be noted that the dimensions, materials, shapes, relative arrangements, etc. of the constituent elements described in this embodiment are not intended to limit the technical scope of the invention unless otherwise specified. do not have.

<Embodiment 1>
[heat-not-burn tobacco]
FIG. 1 is a diagram schematically showing the internal structure of a heat-not-burn cigarette 1 according to Embodiment 1. FIG. The heat-not-burn cigarette 1 is a type of tobacco article that heats the tobacco filler without burning it and delivers the aerosol generated in the tobacco filler to the user.

A heated cigarette 1 comprises a tobacco rod 2 and a filter 3 coaxially aligned. The heated cigarette 1 has a mouth end 1a that a user inserts into the oral cavity during use, and a tip 1b at the end opposite to the mouth end 1a. The filter 3 has a support portion 4, a cooling portion 5, and a mouthpiece portion 6 which are coaxially arranged, and these members are arranged in order from the tip side of the filter 3. As shown in FIG. The support portion 4 , cooling portion 5 , and mouthpiece portion 6 of the filter 3 are integrally wound up by a winding paper 7 . Furthermore, the tobacco rod 2 and the filter 3 are integrally connected by being wound up with the tipping paper 8 .

When the heat-not-burn cigarette 1 is used, air is sucked through the heat-not-burn cigarette 1 from the tip 1b to the mouthpiece end 1a by the user. The tip 1b of the heated tobacco 1 can be regarded as the tip of the tobacco rod 2 or the upstream end, and the mouthpiece end 1a of the heated tobacco 1 can be regarded as the rear end or the downstream end of the mouthpiece portion 6.

The tobacco rod 2 is arranged at the tip 1b of the heated tobacco 1. As shown in FIG. The tobacco rod 2 is a rod-shaped member wrapped with wrapping paper 22 so as to cover the sides of a tobacco filler 21 containing tobacco raw materials and an aerosol-generating base material. In this embodiment, the tobacco raw material contained in the tobacco filler 21 may include one or more of cut tobacco, tobacco granules, and reconstituted tobacco material. In this embodiment, the tobacco filler 21 is reconstituted tobacco material. Reconstituted tobacco materials are those obtained by cutting reconstituted tobacco sheets into small pieces or pulverizing them into granular or powdery forms, or by folding the reconstituted tobacco sheets without cutting them. It can be. A reconstituted tobacco sheet is obtained, for example, by adding a binder, a gelling agent, a cross-linking agent, a flavoring agent, a viscosity modifier, etc. to homogenized tobacco, kneading the mixture, and molding the mixture into a sheet by an appropriate method. Homogenized tobacco is a tobacco material obtained by pulverizing, grinding, and mixing leaf tobacco, dried tobacco leaves, cut tobacco, puffed tobacco, regenerated tobacco, and the like. The reconstituted tobacco sheet is, for example, a reconstituted tobacco slurry sheet (reconstituted tobacco cast sheet), a reconstituted tobacco sheet, or a reconstituted tobacco rolled sheet formed using an appropriate method such as a slurry method, a papermaking method, a rolling method, or the like. It can be. For example, a reconstituted tobacco slurry sheet is a reconstituted tobacco sheet produced by drying and dehydrating a reconstituted tobacco slurry spread on a flat plate. A reconstituted tobacco sheet is a reconstituted tobacco sheet produced by blending pulp (cellulose fibers) with a reconstituted tobacco slurry and making paper. A reconstituted tobacco rolled sheet is a reconstituted tobacco sheet produced by rolling a reconstituted tobacco slurry into a sheet with rollers or the like and drying the sheet.

The aerosol-generating base material contained in the tobacco filler 21 is a substance that generates an aerosol when the volatile substance that is volatilized and released is cooled. The type of aerosol-generating substrate is not particularly limited, and substances extracted from various natural products can be appropriately selected depending on the application. Examples of aerosol-forming substrates include glycerin, propylene glycol, triacetin, 1,3-butanediol, mixtures thereof, and the like. Moreover, the tobacco filler 21 may contain a flavoring agent. The type of perfume is not particularly limited.

The support portion 4 is a segment located on the front end side of the filter 3 . The support portion 4 is located immediately downstream of the tobacco rod 2 and arranged in contact with the rear end of the tobacco rod 2 . The support 4 may be, for example, a hollow cellulose acetate tube. In other words, the support portion 4 may be formed by penetrating a center hole in the center of the cross section of a cylindrical cellulose acetate fiber bundle. Moreover, the support part 4 may be, as another form, a paper filter filled with cellulose fibers, a paper tube, or the like. Any paper tube having a certain thickness can effectively function as the support portion 4 . The supporting portion 4 is configured so that the tobacco filler 21 moves downstream toward the cooling portion 5 in the heating tobacco 1 when the electric heater of the heating device to which the heating tobacco 1 is applied is inserted into the tobacco rod 2 . It is a segment to prevent being pushed. The support portion 4 also functions as a spacer for separating the cooling portion 5 of the heated tobacco 1 from the tobacco rod 2 .

The cooling part 5 is positioned immediately downstream of the support part 4 and arranged in contact with the rear end of the support part 4 . During use of the heat-not-burn cigarette 1 , 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 in the cooling unit 5 to form an aerosol that is inhaled by the user. In the form shown in FIG. 1, the cooling part 5 is formed by a hollow paper tube having a ventilation hole 5a through which external air can be introduced. However, the cooling unit 5 does not have to have the ventilation holes 5a. Also, the cooling unit 5 may have an endothermic agent arranged so as not to block the flow of the volatile substance and the aerosol. For example, the cooling part 5 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 filter 3 .

The mouthpiece portion 6 is a segment located on the rear end of the filter 3, that is, on the side of the mouthpiece end 1a. The mouthpiece portion 6 may be positioned immediately downstream of the cooling portion 5 and may be arranged in contact with the rear end of the cooling portion 5 . In the embodiment shown in FIG. 1, the mouthpiece portion 6 may comprise a filter material made of, for example, cylindrically shaped cellulose acetate fibers. Further, the mouthpiece portion 6 may be a center hole filter, a paper filter filled with cellulose fibers, or a paper tube containing no filtering material. The mouthpiece portion 6 may be formed of any one of a solid filter material having a filter medium, a center hole filter, a paper filter, and a paper tube containing no filter medium, or may be formed by selectively combining a plurality of these. May be.

FIG. 2 is a diagram showing the details of the tobacco rod 2 in the heated tobacco 1. FIG. As shown in FIG. 2, a heater insertion cavity 23 for inserting a heater of a heating device is opened in the tip end face 2a of the tobacco rod 2 (tobacco filler 21). In the example shown in FIG. 2, the heater insertion cavity 23 is formed as a non-penetrating recess (cavity) along the axial direction of the tobacco rod 2 (tobacco filler 21). However, the heater insertion cavity 23 may be formed as a cavity penetrating along the axial direction of the tobacco rod 2 (tobacco filler 21). In the embodiment shown in FIG. 2, the heater insertion cavity 23 has a tapered conical shape that tapers from the tip surface 2a of the tobacco rod 2 (tobacco filler 21) toward the rear end. It may have a tapered truncated cone shape with a diameter decreasing from the surface 2a toward the rear end side. The shape of the heater insertion cavity 23 is not particularly limited, and may have a shape other than a conical shape or a truncated conical shape, for example, a columnar shape. A symbol CL1 shown in FIG. 2 is the central axis of the tobacco rod 2 . The heater insertion cavity 23 may be formed coaxially with the central axis CL<b>1 of the tobacco rod 2 .

Here, the heater insertion cavity 23 of the tobacco rod 2 (tobacco filler 21) has a diameter of 1 mm or more and 4 mm or less at the position of the first end 23a located on the tip surface 2a side of the tobacco rod 2, and the tip surface It is preferable that the diameter at the position of the second end 23b located on the opposite side of 2a is greater than 0 mm and 0.5 mm or less. The heater insertion cavity 23 has a diameter of 10% or more and 80% or less of the diameter of the tobacco rod 2 at the position of the first end 23a located on the tip surface 2a side of the tobacco rod 2, and the second end 23b It is preferable that the diameter at the position of ( ) is larger than 0% and 10% or less of the diameter of the tobacco rod 2 .

FIG. 3 is a schematic configuration diagram of a heating device 100 to which the heat-not-burn cigarette 1 according to Embodiment 1 is applied. The heating device 100 has a housing 102 which is a housing for accommodating various components. The housing 102 accommodates an electric heater 103, a controller (control unit) 104, a power source 105, and the like. The housing 102 has a receiving cavity 107 including an opening 106 into which the tobacco rod 2 of the heated tobacco 1 is inserted. The accommodation cavity 107 is a hollow part having a cylindrical shape, and can accommodate the tobacco rod 2 .

As shown in FIG. 3, an electric heater 103 is provided within the housing cavity 107 . The electric heater 103 has a conical shape and vertically protrudes from the central portion of the bottom portion 107a of the accommodation cavity 107 toward the opening portion 106 side, gradually increasing from the base portion 103a toward the tip portion 103b. tapered to . Also, the central axis of the electric heater 103 is coaxial with the central axis of the housing cavity 107 . In addition, the type of the electric heater 103 is not particularly limited, but for example, a heater in which a heating wire (for example, nichrome, iron chrome, iron nickel, etc.) is stretched around a steel material, or a ceramic heater can be used.

In the heated cigarette 1 configured as described above, the tobacco rod 2 (tobacco filler 21) is formed with the heater insertion cavity 23, so that the tobacco rod 2 is mounted in the housing cavity 107 of the heating device 100. At this time, by inserting the electric heater 103 into the heater insertion cavity 23 of the tobacco rod 2 (tobacco filler 21), insertion resistance when inserting the electric heater 103 into the tobacco filler 21 can be reduced. As a result, usability can be improved when the tobacco rod 2 is attached to the heating device 100 (when the electric heater 103 is inserted into the tobacco rod 2). In addition, when the electric heater 103 is inserted into the tobacco rod 2 , damage such as breakage or bending of the electric heater 103 and buckling deformation of the tobacco rod 2 can be suppressed. In addition, when the tobacco rod 2 is attached to the housing cavity 107 of the heating device 100, the tobacco filler 21 of the tobacco rod 2 can be prevented from being pushed toward the mouthpiece.

Further, in the present embodiment, since the heater insertion cavity 23 of the tobacco rod 2 (tobacco filler 21) has a conical shape, when the electric heater 103 is inserted into the heater insertion cavity 23, The electric heater 103 and the tobacco filler 21 surrounding the side of the heater insertion cavity 23 can be brought into close contact with each other, and heat conduction from the electric heater 103 to the tobacco filler 21 can be improved. Furthermore, when the tobacco rod 2 of the heated tobacco 1 is pulled out from the housing cavity 107 of the heating device 100 after use, the frictional force generated between the electric heater 103 and the tobacco filler 21 is small, so the tobacco filler 21 does not come off. Hard to happen. In addition, since the tobacco filler 21 is less likely to be burned during use, the tobacco filler 21 is less likely to fall off when the tobacco rod 2 is pulled out from the accommodation cavity 107 of the heating device 100 after use.

Here, in the heater insertion cavity 23 of the tobacco rod 2 (tobacco filler 21) in the present embodiment, the cross-sectional area orthogonal to the central axis CL1 direction of the tobacco rod 2 is inserted into the tobacco rod 2 to a specified depth. It may be smaller than the cross-sectional area of each opposing portion of the electric heater 103 in the state. FIG. 4 is a diagram showing a state in which the electric heater 103 is inserted into the tobacco rod 2 to a specified depth when the tobacco rod 2 is attached to the housing cavity 107 of the heating device 100. As shown in FIG. In the present embodiment, the diameter (cross-sectional area) of the heater insertion cavity 23 is 70% of the diameter (cross-sectional area) of each facing portion of the electric heater 103 in a state where it is inserted into the tobacco rod 2 to a specified depth. It is set to be within the range of 99% or less. Here, each opposed portion means a portion of the electric heater 103 and the heater insertion cavity 23 that face each other when the electric heater 103 is inserted into the tobacco rod 2 to a specified depth.

When the heater insertion cavity 23 of the tobacco rod 2 (tobacco filler 21) in this embodiment has a smaller cross-sectional area than each corresponding portion of the electric heater 103 of the heating device 100 to which the heated tobacco 1 is applied, When the electric heater 103 is inserted into the heater insertion cavity 23 , the electric heater 103 is inserted while expanding the heater insertion cavity 23 . In this case, the tobacco filler 21 surrounding the side circumference of the heater insertion cavity 23 and the electric heater 103 can be brought into closer contact with each other, and the heat transfer efficiency from the electric heater 103 to the tobacco filler 21 can be improved. can be done.

<First modification>
FIG. 5 is a diagram illustrating a tobacco rod 2 (tobacco filler 21) according to a first modified example. The heater insertion cavity 23A of the tobacco rod 2 in the first modification has a columnar shape with a constant diameter along the direction of the central axis CL1 of the tobacco rod 2 . FIG. 6 is a diagram showing a state in which the tobacco rod 2 according to the first modification is attached to the housing cavity 107 of the heating device 100. As shown in FIG. FIG. 6 shows a state in which the electric heater 103A is inserted into the tobacco rod 2 to a specified depth. Further, in this modified example, the electric heater 103A has a columnar shape, like the heater insertion cavity 23A according to the first modified example.

Also in the heater insertion cavity 23A according to the first modification, the diameter (cross-sectional area) may be set to a relatively small value compared to the electric heater 103A. In this case, when the electric heater 103A is inserted into the heater insertion cavity 23A, the electric heater 103A is inserted while expanding the heater insertion cavity 23A. As a result, the tobacco filler 21 surrounding the lateral periphery of the heater insertion cavity 23A can be brought into close contact with the electric heater 103A. As a result, the efficiency of heat conduction from the electric heater 103A to the tobacco filler 21 can be improved.

Here, if the diameter of the heater insertion cavity 23A is excessively small, insertion resistance tends to increase when the electric heater 103A is inserted. contact is likely to deteriorate. Therefore, in the heater insertion cavity 23A of the first modified example, the diameter (cross-sectional area) is set to be within a range of 70% or more and 99% or less of the diameter (cross-sectional area) of the electric heater 103A. do. Thereby, both the insertion resistance when inserting the electric heater 103A and the contactability after the insertion can be achieved. As a result, both the usability when attaching the tobacco rod 2 to the heating device 100 (when inserting the electric heater 103A into the tobacco rod 2) and the heating efficiency when heating the tobacco filler 21 by the electric heater 103A are improved. can be done.

Furthermore, since the heater insertion cavity 23A according to the first modified example has a columnar shape with a constant diameter, the tobacco filler 21 around the heater insertion cavity 23A is also removed on the second end 23b side. It can be sufficiently heated when heating with a heater. Therefore, it is possible to make it difficult for the tobacco filler 21 to have a temperature distribution along the direction of the central axis CL1 during heating by the heater, and to improve the delivery amount and delivery stability of the aerosol.

Note that the heater insertion cavity 23A in the first modification preferably has a cylindrical shape with a diameter of 1 mm or more and 4 mm or less. Moreover, it is preferable that the diameter of the heater insertion cavity 23A is 10% or more and 80% or less of the diameter of the tobacco rod 2 . For example, when the tobacco rod 2 has a diameter of 7 mm, the diameter of the heater insertion cavity 23A is preferably about 2.5 mm.

<Second modification>
FIG. 7 is a diagram illustrating a tobacco rod 2 (tobacco filler 21) according to a second modification. The heater insertion cavity 23B of the tobacco rod 2 in the second modification has a truncated cone shape (truncated cone shape) that tapers along the direction of the central axis CL1 of the tobacco rod 2 . FIG. 8 is a diagram showing a state in which the tobacco rod 2 according to the second modification is attached to the housing cavity 107 of the heating device 100. As shown in FIG. FIG. 8 shows a state in which the electric heater 103B is inserted into the tobacco rod 2 to a specified depth. Further, in this modification, the electric heater 103B has a truncated cone shape (truncated cone shape), like the heater insertion cavity 23B according to the second modification.

Also in the heater insertion cavity 23B according to the second modification, the diameter (cross-sectional area) is smaller than the diameter (cross-sectional area) of each facing portion of the electric heater 103B in a state where it is inserted into the tobacco rod 2 to a specified depth. It may be set to a value. In this case, when the electric heater 103B is inserted into the heater insertion cavity 23B, the electric heater 103B is inserted while expanding the heater insertion cavity 23B. As a result, the tobacco filler 21 surrounding the lateral periphery of the heater insertion cavity 23B can be brought into close contact with the electric heater 103B. As a result, the efficiency of heat conduction from the electric heater 103B to the tobacco filler 21 can be improved.

Here, if the diameter of the heater insertion cavity 23B is excessively small, insertion resistance tends to increase when the electric heater 103B is inserted. contact is likely to deteriorate. Therefore, the diameter (cross-sectional area) of the heater insertion cavity portion 23B of the second modified example is calculated as follows: It was set to be within the range of 70% or more and 99% or less. As a result, both the insertion resistance when inserting the electric heater 103B into the tobacco rod 2 and the contactability after the insertion can be achieved. As a result, both the usability when attaching the tobacco rod 2 to the heating device 100 (when inserting the electric heater 103B into the tobacco rod 2) and the heating efficiency when heating the tobacco filler 21 by the electric heater 103B are improved. can be done.

Further, according to the heater insertion cavity 23B in the second modified example, a truncated cone shape (truncated cone shape) is adopted. The advantages of the insertion cavity 23 can be combined.

That is, the heater insertion cavity 23B according to the second modification ensures that the diameter at the position of the second end 23b located on the mouthpiece side is larger than that of the heater insertion cavity 23 that adopts a conical shape. Therefore, the central axis CL
A temperature distribution along one direction can be made difficult to occur. Further, according to the heater insertion cavity portion 23B according to the second modification, since the diameter (cross-sectional area) is tapered along the direction of the central axis CL1 of the tobacco rod 2, the electric heater 103B is attached to the tobacco rod 2. It is possible to improve the contactability after insertion while reducing the insertion resistance when inserting the.

Here, the heater insertion cavity portion 23B according to the second modification has a diameter of 1 mm or more and 4 mm or less at the position of the first end 23a located on the side of the tip end face 2a of the tobacco rod 2, and is on the opposite side of the tip end face 2a. It is preferable that the diameter at the position of the second end 23b located at the position is 0.5 mm or more and 3.5 mm or less. The heater insertion cavity 23B has a diameter of 10% or more and 80% or less of the diameter of the tobacco rod 2 at the position of the first end 23a located on the tip surface 2a side of the tobacco rod 2, and the second end 23b It is preferable that the diameter at the position of is set to 5% or more and 70% or less of the diameter of the tobacco rod 2 .

The heater insertion cavities 23, 23A, and 23B of the tobacco rod 2 (tobacco filler 21) in the present embodiment are not limited to the conical, cylindrical, and truncated conical shapes described above, and may adopt various shapes. can be done. Also, the number of heater insertion cavities 23, 23A, and 23B formed in the tobacco rod 2 (tobacco filler 21) is not particularly limited. For example, the tobacco rod 2 (tobacco filler 21) may be formed with a plurality of heater insertion cavities 23, 23A, and 23B.

Further, the case where the heater insertion cavities 23, 23A, and 23B described above are formed as non-penetrating recesses that do not penetrate the tobacco rod 2 along the direction of the central axis CL1 of the tobacco rod 2 has been described as an example. You may form as a through-hole which penetrates the rod 2. FIG. FIG. 9A is a diagram illustrating a heater insertion cavity 23C according to a third modification. A heater insertion cavity 23C according to the third modification has a conical shape, and is similar to the heater insertion cavity 23 shown in FIG. are identical. FIG. 9B is a diagram illustrating a heater insertion cavity 23D according to a fourth modification. A heater insertion cavity 23D according to the fourth modification has a columnar shape and is similar to the heater insertion cavity 23A shown in FIG. are identical. FIG. 9C is a diagram illustrating a heater insertion cavity 23E according to the fifth modification. The heater insertion cavity 23E according to the fifth modification has a truncated cone shape, and is similar to the heater insertion cavity 23B shown in FIG. is identical to

As shown in FIGS. 9A to 9C, when the heater insertion cavities 23C, 23D, and 23E are through holes extending along the central axis CL1 direction of the tobacco rod 2, the heater insertion cavities 23C, 23D, It is preferable that the tobacco rod 2 after forming 23E is integrally connected to the filter 3 by a filter tip attachment device. As a result, for example, when the heater insertion cavities 23C, 23D, and 23E are formed by inserting a needle into the distal end surface 2a of the tobacco rod 2, even if the tobacco filler 21 is pushed out toward the mouthpiece by the needle, If the tobacco rod 2 is connected to the filter 3 after that, no particular inconvenience will occur.

9A to 9C, heater insertion cavities 23C, 23D, and 23E are formed as through-holes passing through the tobacco rod 2, so that the tobacco filler 21 is located downstream of the tip of the electric heater 103. There is no decrease in thermal conductivity during heater heating. As a result, the aerosol generated during heating by the heater is cooled in the tobacco filler 21 in the vicinity of the tip of the electric heater 103 and can be suppressed from condensing. As a result, the amount of aerosol delivered during use can be increased.

On the other hand, as shown in FIGS. 2, 5, and 7, by forming the heater insertion cavities 23, 23A, and 23B as non-through holes that do not penetrate the tobacco rod 2, for example, the tip surface of the tobacco rod 2 When forming the heater insertion cavities 23, 23A, and 23B by inserting the needle into 2a, the needle does not push out the tobacco filling material 21 of the tobacco rod 2 toward the mouthpiece. Thus, in the filter tip attachment device, after the filter 3 is connected to the tobacco rod 2, the heater insertion cavities 23, 23A, and 23B can be punched, resulting in excellent manufacturability.

Although the embodiments according to the present invention have been described above, the heat-not-burn cigarette according to the present invention is not limited to these.

REFERENCE SIGNS LIST 1 Heated tobacco 2 Tobacco rod 3 Filter 4 Support part 5 Cooling part 6 Mouthpiece part 21 Tobacco filler 23 Heater insertion Cavity for

Claims (9)

a tobacco rod and
a filter arranged coaxially with the tobacco rod;
tipping paper connecting the tobacco rod and the filter;
prepared,
The filter is
a support positioned downstream of the tobacco rod;
a cooling section located downstream of the support section,
The support portion is a hollow tubular body through which a center hole is formed,
The cooling part is a hollow tube having a through hole formed along the longitudinal direction,
The cooling unit has a vent through which external air can be introduced,
The air vent is located upstream in the cooling unit,
heated tobacco. The support section and the cooling section are wound by a roll of paper,
the vent passes through the tipping paper and the web,
The heated cigarette according to claim 1. the air vent penetrates the tip paper, the web, and the cooling unit;
The heated cigarette according to claim 2. The diameter of the through-hole is larger than the diameter of the center hole,
The heat-not-burn cigarette according to any one of claims 1 to 3. The hollow tube forming the support section is made of cellulose acetate, and the hollow tube forming the cooling section is made of a filter material.
The heat-not-burn cigarette according to any one of claims 1 to 4. The tobacco rod includes a tobacco filler, and a hollow portion is formed in the tobacco filler along the axial direction of the tobacco rod.
The heat-not-burn cigarette according to any one of claims 1 to 5. The tobacco filler encloses the lateral perimeter of the cavity,
The heated cigarette according to claim 6. The cavity penetrates along the axial direction of the tobacco rod,
The heated cigarette according to claim 6 or 7. A product combining the heat-not-burn cigarette according to any one of claims 1 to 8 and a heating device having a housing cavity into which the heat-not-burn cigarette is inserted,
a heater, wherein the heater is located within the cavity;
A product that combines a heat-not-burn cigarette and a heating device.

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