JP7665015B2 - Coolants for non-combustion heated tobacco products, non-combustion heated tobacco products, and electrically heated tobacco products - Google Patents

Description

The present invention relates to cooling agents for non-combustion heated tobacco products, non-combustion heated tobacco products, and electrically heated tobacco products.

In recent years, non-combustion heated tobacco that is inserted into an electric heating device has been developed as a substitute for cigarettes (paper cigarettes) (Patent Document 1). The non-combustion heated tobacco generally comprises a tobacco rod portion in which a composition containing flavor components such as tobacco shreds and an aerosol base material is wrapped in cigarette paper, a mouthpiece portion for inhaling the components generated from the tobacco rod portion by heating, and a tipping paper for wrapping these. When using the non-combustion heated tobacco, the non-combustion heated tobacco is inserted or placed in the electric heating device. The heat source provided in the electric heating device heats at least a part of the tobacco rod portion without burning it, thereby generating volatile substances from the composition contained in the tobacco rod portion. These volatile substances are transported from the tobacco rod portion side to the mouthpiece portion side by the user's inhalation, but are cooled in the cooling segment included in the mouthpiece portion to form an aerosol.

For example, U.S. Patent No. 5,399,633 discloses an aerosol cooling element that includes a plurality of longitudinally extending channels and has a porosity in the longitudinal direction of between 50% and 90%.

Special Publication No. 2015-508676

The temperature of smoke generated by a cigarette can reach or exceed 800° C. At such high temperatures, the amount of moisture contained in the smoke is very small, so users tend not to perceive the high temperature.
On the other hand, the aerosol generated by non-combustion heating tobacco contains a relatively large amount of moisture, and therefore, although the temperature of the aerosol is lower than that of a cigarette, users can easily perceive the temperature of the aerosol as being higher than that of a cigarette.

Conventionally, methods for lowering the temperature of the aerosol have been to lower the heating temperature during use or to lengthen the flow path of the aerosol.
A method for lowering the temperature of an aerosol must have the following characteristics: it must be able to cool efficiently and safely; it must be stable from the manufacturing stage of the non-combustion heated tobacco until the consumer has finished using it; it must not adversely affect the flavor of the aerosol; and it must have only a limited impact on manufacturing costs. However, conventional methods have found it difficult to meet all of these characteristics, leaving room for improvement.

Therefore, the present invention aims to provide a cooling agent for non-combustion heated tobacco that is highly efficient, safe, and stable, does not adversely affect the flavor of the aerosol, and can reduce the temperature of the aerosol while keeping production costs down, as well as a non-combustion heated tobacco and an electrically heated tobacco product that contain the same.

As a result of intensive research, the inventors discovered that the above problems could be solved by using a granular base material impregnated with a polyhydric alcohol, and arrived at the present invention. That is, the gist of the present invention is as follows.

[1] A composition comprising a polyhydric alcohol and a porous granular substrate,
A cooling agent for non-combustion heated tobacco, wherein the polyhydric alcohol is impregnated into the granular base material.
[2] The cooling agent for non-combustion heated tobacco according to [1], wherein the content of the polyhydric alcohol in the cooling agent for non-combustion heated tobacco is 3% by weight or more and 39% by weight or less.
[3] The cooling agent for non-combustion heated tobacco according to [1] or [2], wherein the porous granular base material is one or more selected from the group consisting of charcoal, calcium carbonate, cellulose, acetate, sugar, starch, and chitin.
[4] The cooling agent for non-combustion heated tobacco according to any one of [1] to [3], wherein the pore volume of the porous granular substrate is 0.3 mL/g or more and 0.8 mL/g or less.
[5] The cooling agent for non-combustion heating-not-burn tobacco according to any one of [1] to [4], having an average particle size of 212 μm or more and 600 μm or less.
[6] The cooling agent for non-combustion heating-not-burn tobacco according to any one of [1] to [5], having a bulk density of 0.55 g/ ^cm3 or more and 0.80 g/cm3 or ^less .
[7] A non-combustion heat-not-burn tobacco having a mouthpiece portion containing the cooling agent for non-combustion heat-not-burn tobacco according to any one of [1] to [6].
[8] The non-combustion heated tobacco product according to [7], wherein the mouthpiece portion has a cooling segment, and at least the cooling segment contains a cooling agent for the non-combustion heated tobacco product.
[9] An electrically heated tobacco product comprising: an electrically heated device including a heater member, a battery unit that serves as a power source for the heater member, and a control unit for controlling the heater member; and the non-combustion heated tobacco product according to [7] or [8], which is inserted so as to come into contact with the heater member.
[10] A step A of spraying or dropping a solution containing a polyhydric alcohol onto a porous granular substrate to obtain granules;
A step B of drying the granules;
A method for producing a cooling agent for non-combustion heated tobacco, comprising:
[11] The method for producing a cooling agent for non-combustion heat-not-burn tobacco according to [10], wherein in the step A, the solution is sprayed or dropped onto the porous granular base material while the porous granular base material is fluidized to obtain granules.

According to the present invention, it is possible to provide a cooling agent for non-combustion heated tobacco that is highly efficient, safe, and stable, and that can reduce the temperature of the aerosol without adversely affecting the flavor of the aerosol and while minimizing the impact on production costs, as well as a non-combustion heated tobacco and an electrically heated tobacco product that contain the same.

1 is a schematic diagram of a non-combustion heated tobacco product according to an embodiment of the present invention. 1 is a schematic diagram of an electrically heated tobacco product according to an embodiment of the present invention. 1 is a schematic diagram of an electrically heated tobacco product according to an embodiment of the present invention. FIG. 13 is a diagram illustrating the end of the region where the cooling segment and the electrically heated device contact each other on the suction end side. FIG. 13 is a diagram illustrating the end of the region where the cooling segment and the electrically heated device contact each other on the suction end side. FIG. 2 is a schematic diagram of a system for evaluating the cooling effect in the examples. 1 is a graph showing evaluation results of cooling effects in examples.

The following describes the embodiments of the present invention in detail, but these descriptions are merely examples (representative examples) of the embodiments of the present invention, and the present invention is not limited to these contents as long as they do not depart from the gist of the present invention.
In addition, in this specification, when an expression is used using "~" followed by a numerical value or physical property value, the values before and after the expression are used as including the values before and after the expression.
In addition, in this specification, "plurality" means two or more, unless otherwise specified.

<Cooling agent for non-combustion heated tobacco products>
A cooling agent for non-combustion heated tobacco according to one embodiment of the present invention is a cooling agent for non-combustion heated tobacco (hereinafter also referred to simply as "cooling agent") that contains a polyhydric alcohol and a porous granular base material, with the polyhydric alcohol being impregnated into the granular base material.

The polyhydric alcohol contained in the above cooling agent is a material that is often used as a refrigerant for a brine freezer used in the food industry. The reason why polyhydric alcohol is used is that it can cool efficiently and is a substance with extremely low toxicity, and is excellent in safety. In addition, polyhydric alcohol has a low melting point and can always remain stable as a liquid in the heating temperature range used for non-combustion heated tobacco, so that the stable state is maintained from the manufacturing stage of the non-combustion heated tobacco to the completion of use by the user. In addition, polyhydric alcohol has been used as a moisturizing agent for non-combustion heated tobacco, does not adversely affect the flavor, and is not a particularly expensive material. Furthermore, when a form in which a hollow (hollow) cavity is provided or a form in which a PLA sheet is used as a part of the mouthpiece part of the non-combustion heated tobacco is adopted, the hardness is likely to be insufficient, but by containing polyhydric alcohol in the granular base material, this hardness problem can be improved, and the holding feeling when handled with smoking can be improved. In addition to these advantages, by incorporating a polyhydric alcohol into the granular base material, it is possible to directly utilize the handling techniques and equipment for granules such as granular activated carbon that have been cultivated in the development of conventional non-combustion heated tobacco products, thereby reducing production costs.
In addition, the conventional method of lowering the heating temperature during use has a high risk of unstable aerosol generation, and the conventional method of introducing vent air has a problem of diluting the flavor. On the other hand, the method using the above-mentioned coolant does not have such problems, so from this point of view, the method using the above-mentioned coolant is excellent in cooling efficiency and stability. In addition, the conventional method of lengthening the aerosol flow path increases the manufacturing cost of the non-combustion heat-not-burn tobacco itself and is likely to limit the freedom of design of the non-combustion heat-not-burn tobacco, while the method using the above-mentioned coolant does not have such problems, so from this point of view, the method using the above-mentioned coolant can reduce manufacturing costs.

The cooling agent includes a polyhydric alcohol and a porous granular base material. The polyhydric alcohol is not particularly limited as long as it is a dihydric or higher alcohol, but it may be any alcohol that is safely used as a food additive. In addition, it is preferable that the polyhydric alcohol does not affect the flavor of the non-combustion heat-not-burn tobacco. Specific examples include propylene glycol and glycerin.
The boiling point of the polyhydric alcohol is not particularly limited, but since it is preferable that the polyhydric alcohol is liquid at 20° C. and atmospheric pressure, the boiling point is usually 100° C. or higher, preferably 130° C. or higher, and more preferably 160° C. or higher at atmospheric pressure. Also, the boiling point is usually 340° C. or lower, preferably 290° C. or lower, and more preferably 240° C. or lower.
The content of polyhydric alcohol in the coolant is not particularly limited, but is usually 3% by weight or more, preferably 8% by weight or more, more preferably 13% by weight or more, and even more preferably 18% by weight or more, and is usually 39% by weight or less, preferably 34% by weight or less, more preferably 31% by weight or less, and even more preferably 29% by weight or less.

By contacting the aerosol with the cooling agent, the temperature of the aerosol inhaled by the user can be reduced, for example, by 4° C. or more. In some embodiments, the temperature can be reduced by 9° C. or more.
Furthermore, it is thought that the aroma and taste may be improved by adsorbing some of the components contained in the aerosol.

Examples of the porous granular substrate include charcoal, calcium carbonate, cellulose, acetate, sugar, starch, chitin, etc. Charcoal is particularly preferred, and activated carbon is even more preferred.
Examples of activated carbon include those made from raw materials such as wood, bamboo, coconut shells, walnut shells, and coal.
The BET specific surface area of the porous granular substrate is not particularly limited, but is usually 1100 ^m2 /g or more and 1600 ^m2 /g or less, preferably 1200 ^m2 /g or more and 1500 ^m2 /g or less, and more preferably 1250 ^m2 /g or more and 1380 ^m2 /g or less. The BET specific surface area can be determined by a nitrogen gas adsorption method (BET multipoint method).
The pore volume of the porous granular substrate is not particularly limited, but is usually 0.3 mL/g or more and 0.8 mL/g or less, more preferably 0.5 mL/g or more and 0.75 mL/g or less, and even more preferably 0.6 mL/g or more and 0.7 mL/g or less. By setting the pore volume of the porous granular substrate within the above range, the desired cooling effect is easily obtained. The pore volume can be calculated from the maximum adsorption amount obtained using a nitrogen gas adsorption method.
The average particle size of the porous granular base material is not particularly limited, but from the viewpoint of easily obtaining the desired cooling effect, it is usually 200 μm or more and 600 μm or less, preferably 212 μm or more and 600 μm or less, more preferably 250 μm or more and 600 μm or less, even more preferably 250 μm or more and 500 μm or less, and particularly preferably 300 μm or more and 450 μm or less. In this specification, the average particle size is measured by the dry sieve method (JIS Z 8815-1994). In addition, the average particle size in this specification means the particle size (D50) at which the volume integrated value in the particle size distribution is 50%, unless otherwise specified.

The bulk density of the porous granular base material is not particularly limited, but from the viewpoint of easily obtaining the desired cooling effect, it is usually 0.30 g/cm ³ or more, 0.35 g/cm ³ or more , preferably 0.40 g/cm ³ or more and 0.70 g/cm ³ or less, and more preferably 0.65 g/cm ³ or less, 0.60 g/cm ³ or less. The bulk density can be evaluated using a powder property evaluation device (for example, Powder Tester PT-X manufactured by Hosokawa Micron).
The tap density of the porous granular base material is not particularly limited, but from the viewpoint of easily obtaining the desired cooling effect, it is usually 0.35 g/cm ³ or more, 0.40 g/cm ³ or more, preferably 0.45 g/cm ³ or more and 0.75 g/cm ³ or less, and more preferably 0.70 g/cm ³ or less and 0.65 g/cm ³ or less. The tap density can be evaluated using a powder property evaluation device (for example, Powder Tester PT-X manufactured by Hosokawa Micron).

The compression ratio of the porous granular base material is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 1.0% or more and 10.0% or less, preferably 2.0% or more and 9.0% or less, and more preferably 3.0% or more and 8.0% or less. The compression ratio can be evaluated using a powder property evaluation device (for example, Hosokawa Micron Powder Tester PT-X).

The angle of repose of the porous granular base material is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 20.0° or more and 50.0° or less, preferably 25.0° or more and 45.0° or less, and more preferably 30.0° or more and 40.0° or less. The angle of repose can be measured using a sample after storage for 12 to 24 hours in an environment at a temperature of 22°C and a relative humidity of 60%, in accordance with the method described in JIS 9301-2-2, using an angle of repose measuring device (for example, Powder Tester PT-X manufactured by Hosokawa Micron Corporation).
The collapse angle of the porous granular base material is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 5.0° or more and 30.0° or less, preferably 8.0° or more and 28.0° or less, and more preferably 10.0° or more and 25.0° or less. The collapse angle can be evaluated using a powder property evaluation device (for example, Powder Tester PT-X manufactured by Hosokawa Micron) under the same conditions as the above-mentioned angle of repose.
The difference angle of the porous granular substrate is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 8.0° to 30.0°, preferably 10.0° to 28.0°, and more preferably 12.0° to 25.0°. It can be evaluated by the value obtained by subtracting the collapse angle from the repose angle.

The spatula angle of the porous granular base material is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 25.0° or more and 50.0° or less, preferably 28.0° or more and 48.0° or less, and more preferably 30.0° or more and 45.0° or less. The spatula angle can be evaluated using a powder property evaluation device (for example, Hosokawa Micron Powder Tester PT-X).

The uniformity of the porous granular base material is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 1.0 or more and 2.0 or less, preferably 1.1 or more and 1.9 or less, and more preferably 1.2 or more and 1.8 or less. The uniformity can be evaluated using a powder property evaluation device (for example, Hosokawa Micron Powder Tester PT-X).

The air flow index of the porous granular substrate is not particularly limited, but from the viewpoint of ensuring the desired air resistance, it is usually 75.0 or more and 98.0 or less, preferably 78.0 or more and 95.0 or less, and more preferably 80.0 or more and 93.0 or less. The air flow index can be evaluated using a powder property evaluation device (for example, Hosokawa Micron Powder Tester PT-X).

The degree of dispersion of the porous granular base material is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 13.0% or more and 30.0% or less, preferably 15.0% or more and 28.0% or less, and more preferably 18.0% or more and 25.0% or less. The degree of dispersion can be evaluated using a powder property evaluation device (for example, Powder Tester PT-X manufactured by Hosokawa Micron).

The flowability index of the porous granular base material is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 65.0 or more and 95.0 or less, preferably 70.0 or more and 90.0 or less, and more preferably 75.0 or more and 85.0 or less. The flowability index can be evaluated using a powder property evaluation device (for example, Hosokawa Micron Powder Tester PT-X).

The hardness of the porous granular substrate is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 95.0% or more and 100.0% or less, and preferably 97.0% or more and 100.0% or less. The hardness can be measured by shaking using a shaker (e.g., a low tap type shaker manufactured by Kagaku Kyoei Co., Ltd.) in accordance with the method described in JIS K1474 7.6, with an upper sieve limit of 0.500 and a lower sieve limit of 0.250.

The coolant may contain water, etc., in addition to the polyhydric alcohol and the porous granular base material. The water content of the coolant is not particularly limited, but is usually 18% by weight or less, preferably 15% by weight or less, and more preferably 12% by weight or less. There is no particular need to set a lower limit, and the water content may be 0% by weight or more, or 0.5% by weight or more.
The average particle size of the coolant is not particularly limited, but from the viewpoint of easily obtaining the desired cooling effect, it is usually 200 μm or more and 600 μm or less, preferably 212 μm or more and 600 μm or less, more preferably 250 μm or more and 600 μm or less, even more preferably 250 μm or more and 500 μm or less, and particularly preferably 300 μm or more and 450 μm or less. The average particle size of the coolant can be measured in the same manner as the average particle size of the porous granular substrate described above.
The bulk density of the coolant is not particularly limited, but from the viewpoint of easily obtaining the desired cooling effect, it is usually 0.55 g/cm ³ or more and 0.80 g/cm ³ or less, preferably 0.62 g/cm ³ or more and 0.78 g/cm ³ or less, and more preferably 0.7 g/cm ³ or more and 0.76 g/cm ³ or less. The bulk density of the coolant can be measured by the same method as that for the porous granular substrate described above.

The tap density of the coolant is not particularly limited, but from the viewpoint of easily obtaining the desired cooling effect, it is usually 0.65 g/cm ³ or more and 0.88 g/cm ³ or less, preferably 0.70 g/cm ³ or more and 0.85 g/cm ³ or less, and more preferably 0.73 g/cm ³ or more and 0.82 g/cm ³ or less. The tap density of the coolant can be measured by the same method as that of the porous granular substrate described above.

The compressibility of the coolant is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 1.0% or more and 10.0% or less, preferably 2.0% or more and 9.0% or less, and more preferably 3.0% or more and 8.0% or less. The compressibility of the coolant can be measured in the same manner as for the porous granular substrate described above.

The angle of repose of the coolant is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 20.0° or more and 50.0° or less, preferably 25.0° or more and 45.0° or less, and more preferably 30.0° or more and 40.0° or less. The angle of repose of the coolant can be measured in the same manner as for the porous granular substrate described above.
The collapse angle of the coolant is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 10.0° or more and 35.0° or less, preferably 13.0° or more and 33.0° or less, and more preferably 15.0° or more and 30.0° or less. The collapse angle of the coolant can be measured in the same manner as that of the porous granular substrate described above.
The difference angle of the coolant is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 8.0° to 55.0°, preferably 10.0° to 53.0°, and more preferably 12.0° to 50.0°. The difference angle of the coolant can be determined in the same manner as for the porous granular substrate described above.

The spatula angle of the coolant is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 25.0° or more and 65.0° or less, preferably 28.0° or more and 60.0° or less, and more preferably 30.0° or more and 55.0° or less. The spatula angle of the coolant can be measured in the same manner as the porous granular substrate described above.

The uniformity of the coolant is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 1.0 or more and 2.0 or less, preferably 1.1 or more and 1.9 or less, and more preferably 1.2 or more and 1.8 or less. The uniformity of the coolant can be measured in the same manner as for the porous granular substrate described above.

The airflow fluidity index of the coolant is not particularly limited, but from the viewpoint of ensuring the desired airflow resistance, it is usually 75.0 or more and 98.0 or less, preferably 78.0 or more and 95.0 or less, and more preferably 80.0 or more and 93.0 or less. The airflow fluidity index of the coolant can be measured in the same manner as for the porous granular substrate described above.

The degree of dispersion of the coolant is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 13.0% or more and 30.0% or less, preferably 15.0% or more and 28.0% or less, and more preferably 18.0% or more and 25.0% or less. The degree of dispersion of the coolant can be measured in the same manner as for the porous granular substrate described above.

The flowability index of the coolant is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 65.0 or more and 95.0 or less, preferably 70.0 or more and 90.0 or less, and more preferably 73.0 or more and 83.0 or less. The flowability index of the coolant can be measured in the same manner as for the porous granular substrate described above.

The hardness of the coolant is not particularly limited, but from the viewpoint of ensuring the desired stability, it is usually 95.0% or more and 100.0% or less, and preferably 97.0% or more and 100.0% or less. The hardness of the coolant can be measured in the same manner as the porous granular substrate described above.

In this embodiment, the polyhydric alcohol is impregnated into the granular substrate. In this specification, "impregnated" means that at least a portion of the polyhydric alcohol is held in the pores of the porous granular substrate. The pores of the porous granular substrate holding the polyhydric alcohol may be exposed to the surface of the substrate, or may be present inside the substrate.

The method for producing the coolant is not particularly limited, but includes a production method including step A in which a solution containing the polyhydric alcohol is sprayed or dropped onto a porous granular substrate to obtain granules, and step B in which the granules are dried. The steps A and B can be carried out continuously, but it is preferable to alternately carry out the steps A and the drying step multiple times to prevent the amount of moisture contained in the granules from becoming excessive. The number of times that steps A and B are carried out is not particularly limited, and may be one time, or may be repeated until the amount of polyhydric alcohol contained in the granules reaches a desired value. The production method for the coolant may include production steps other than the steps A and B.
In addition, the step A is preferably a step of obtaining granules by spraying or dropping the solution onto the porous granular base material while fluidizing the porous granular base material. The coolant obtained by the step of immersing the porous granular base material in the solution and then draining the liquid may contain lumps with large particle sizes, but the coolant obtained by the step A is likely to have an average particle size within the above range without generating lumps with large particle sizes.

The solution used in step A preferably has a polyhydric alcohol content of 25% by weight or more, more preferably 40% by weight or more. In addition, the content is usually 75% by weight or less, preferably 60% by weight or less. In addition, the solution may contain other solvents, such as water.

The viscosity of the solution is not particularly limited, but is usually 1.0 mPa·s or more and 9.0 mPa·s or less, preferably 1.5 mPa·s or more and 6.0 mPa·s or less, and more preferably 2.5 mPa·s or more and 4.0 mPa·s or less. The viscosity of the solution can be adjusted to the above range by diluting the polyhydric alcohol with the solvent according to the temperature and pressure in step A.
The temperature in the above step A may be room temperature of about 20° C., but is not limited thereto, and may be within a range in which the polyhydric alcohol and the solvent do not solidify or evaporate. The pressure may be atmospheric pressure, but is not limited thereto, and may be within a range in which the polyhydric alcohol and the solvent do not solidify or evaporate.

The drying method in the step B is not particularly limited, and examples thereof include vacuum drying and hot air drying. When hot air drying is performed, hot air is blown onto the granules obtained in the step A until the moisture content of the granules falls within the range exemplified for the moisture content of the cooling agent.
The drying temperature is not particularly limited, but is usually 30° C. or higher, preferably 35° C. or higher, and more preferably 40° C. or higher. Also, it is usually 90° C. or lower, preferably 80° C. or lower, and more preferably 70° C. or lower. During drying, it is preferable to remove the solvent (water) while leaving the polyhydric alcohol from the viewpoint of production stability, and the drying conditions are appropriately set according to the type of polyhydric alcohol.

It is preferable that the drying step be carried out while the granules are kept fluidized, in order to perform a uniform drying process between the granules and over the entire surface of the granules. In particular, when steps A and B are carried out alternately, it is preferable to keep the granules fluidized while these steps are repeated.

<Non-combustion heated tobacco>
Another embodiment of the present invention is a non-combustion heated tobacco product having a mouthpiece portion containing the above-mentioned cooling agent for non-combustion heated tobacco products.
An example of a non-combustion heat-not-burn tobacco product according to an embodiment is shown in Fig. 1. Hereinafter, a non-combustion heat-not-burn tobacco product will be described with reference to Fig. 1.

1 is a rod-shaped non-combustion heated tobacco 10 including a tobacco rod portion 11, a mouthpiece portion 14, and a tipping paper 15 wrapped around the tobacco rod portion 11 and the mouthpiece portion 14. The mouthpiece portion 14 includes a cooling segment 12 and a filter segment 13 including a filter medium, and at least one of the cooling segment 12 and the filter segment 13 includes a coolant according to an embodiment of the present invention. In addition, the cooling segment 12 may be sandwiched adjacent to the tobacco rod portion 11 and the filter segment 13 in the axial direction (also referred to as the "long axis direction") of the non-combustion heated tobacco 10, and an opening V may be provided concentrically in the circumferential direction of the cooling segment 12.

The opening V provided in the cooling segment 12 in the non-combustion heated tobacco 10 shown in Figure 1 is usually a hole for promoting the inflow of air from the outside when the user inhales, and this inflow of air can lower the temperature of the components and air flowing in from the tobacco rod portion 11.
The openings V that may be provided in this embodiment may be present in an area 4 mm or more in the direction toward the cooling segment from the boundary between the cooling segment 12 and the filter segment 13. This configuration can improve the cooling capacity for lowering the temperature of the components and air generated by heating, and further suppress retention of the components and air in the cooling segment, thereby improving the delivery amount of the components.
Examples of components generated by heating include flavor components derived from flavorings, nicotine and tar derived from tobacco leaves, and aerosol components derived from the aerosol base material.

The rod-shaped non-combustion heating tobacco product 10 preferably has a columnar shape that satisfies an aspect ratio of 1 or more, as defined below.
Aspect ratio = h/w
w is the width of the bottom surface of the columnar body (in this specification, the width of the bottom surface on the tobacco rod portion side), and h is the height, and it is preferable that h≧w. In this specification, the long axis direction is defined as the direction indicated by h. Therefore, even if w≧h, the direction indicated by h will be referred to as the long axis direction for convenience. The shape of the bottom surface is not limited and may be a polygon, a rounded polygon, a circle, an ellipse, etc., and the width w is the diameter when the bottom surface is a circle, the major axis when the bottom surface is an ellipse, or the diameter of the circumscribing circle or the major axis of the circumscribing ellipse when the bottom surface is a polygon or a rounded polygon.
The length h of the non-combustion heating tobacco product 10 in the major axis direction is not particularly limited, and is, for example, usually 40 mm or more, preferably 45 mm or more, and more preferably 50 mm or more, and is usually 100 mm or less, preferably 90 mm or less, and more preferably 80 mm or less.
The width w of the bottom surface of the columnar body of the non-combustion heating tobacco product 10 is not particularly limited, and is, for example, usually 5 mm or more, preferably 5.5 mm or more, and usually 10 mm or less, preferably 9 mm or less, and more preferably 8 mm or less.

The air resistance in the longitudinal direction per non-combustion heated tobacco product 10 is not particularly limited, but from the standpoint of ease of smoking, it is usually 8 _mmH2O or more, preferably ₁₀ mmH2O or more, and more preferably 12 _mmH2O or more, and is usually 100 _mmH2O or less, preferably 80 _mmH2O or less, and more preferably 60 _mmH2O or less.
The airflow resistance is measured according to the ISO standard method (ISO6565:2015), for example, using a filter airflow resistance meter manufactured by Cerulean Co., Ltd. The airflow resistance refers to the air pressure difference between the first end face and the second end face when air is flowed at a predetermined air flow rate (17.5 cc/min) from one end face (first end face) to the other end face (second end face) in a state where air does not pass through the side face of the non-combustion heated tobacco 10. The unit is generally expressed in mmH ₂ O. It is known that the relationship between the airflow resistance and the length of the non-combustion heated tobacco is proportional within the length range usually used (length 5 mm to 200 mm), and if the length is doubled, the airflow resistance of the non-combustion heated tobacco is doubled.

[Mouthpiece section]
The configuration of the mouthpiece section 14 is not particularly limited as long as it includes a filter segment 13 containing a filter material, and may be composed of only the filter segment 13, or may include a cooling segment 12 and a filter segment 13 containing a filter material, and may be configured such that the cooling segment 12 is sandwiched adjacent to the tobacco rod section 11 and the filter segment 13 with respect to the axial direction of the non-combustion heat-not-burn tobacco 10. When the mouthpiece section 14 is composed of only the filter segment 13, the above-mentioned coolant is contained in the filter segment 13, but when the mouthpiece section 14 is composed of the filter segment 13 and the cooling segment 12, the above-mentioned coolant may be contained in at least one of the filter segment 13 and the cooling segment 12. In particular, from the viewpoint of improving the cooling effect, it is preferable that the mouthpiece section 14 has the cooling segment 12, and at least the cooling segment 12 contains the above-mentioned coolant, and it is more preferable that both the filter segment 13 and the cooling segment 12 contain the above-mentioned coolant.

The ratio of the length of the cooling segment 12 and the length of the filter segment 13 in the longitudinal direction of the mouthpiece portion 14 (cooling segment: filter segment) is not particularly limited, but from the viewpoint of the delivery amount of the flavor and the appropriate aerosol concentration, it is usually 0.60 to 1.40: 0.60 to 1.40, preferably 0.80 to 1.20: 0.80 to 1.20, more preferably 0.85 to 1.15: 0.85 to 1.15, even more preferably 0.90 to 1.10: 0.90 to 1.10, and particularly preferably 0.95 to 1.05: 0.95 to 1.05. In particular, if the cooling segment 12 is made longer, the particulation of the aerosol etc. is promoted and a good flavor can be achieved, but if it is too long, the substance passing through will adhere to the inner wall.
By setting the length ratio of the cooling segment 12 and the filter segment 13 within the above range, a balance can be achieved between the cooling effect, the effect of suppressing losses due to adhesion of the generated steam and aerosol to the inner wall of the cooling segment 12, and the function of adjusting the air volume and flavor of the filter, thereby obtaining a good flavor.
The filter segment and the cooling segment will be described in detail below.

(Filter Segment)
The filter segment 13 is not particularly limited as long as it has a general filter function, and for example, a synthetic fiber tow (also simply referred to as "tow") or a cylindrical material such as paper can be used. General functions of a filter include, for example, adjusting the amount of air mixed in when inhaling aerosols, reducing flavor, and reducing nicotine and tar, but it is not necessary for the filter to have all of these functions. In addition, in electrically heated tobacco products, which tend to produce fewer components and have a lower tobacco filler filling rate compared to cigarette products, one of the important functions is to suppress the filtering function while preventing the tobacco filler from falling.

In this embodiment, the filter segment may include a coolant according to an embodiment of the invention.
The ratio of the coolant to the entire filter segment is not particularly limited, but is usually 5 vol% or more, preferably 10 vol% or more, and more preferably 15 vol% or more, and is usually 100 vol% or less, and preferably 90 vol% or less.

There are no particular limitations on the method of incorporating the cooling material according to one embodiment of the present invention into the filter segment 13. For example, materials such as synthetic fiber tow or paper can be powdered before being processed into a cylindrical shape. In addition, the cooling material can be added or retained inside a cylinder made of tow or paper between the processing into a cylindrical shape and the wrapping process.

The shape of the filter segment 13 is not particularly limited, and any known shape can be adopted. Usually, the filter segment 13 can have a cylindrical shape, and can have the following forms.
Furthermore, the filter segment 13 may be provided with a section such as a cavity (such as a center hole) or a recess, the cross section of which is hollow (hollow) in the circumferential direction.

The cross-sectional shape of the filter segment 13 in the circumferential direction is substantially circular, and the diameter of the circle can be appropriately changed according to the size of the product, but is usually 4.0 mm or more and 9.0 mm or less, preferably 4.5 mm or more and 8.5 mm or less, and more preferably 5.0 mm or more and 8.0 mm or less. When the cross section is not circular, the above diameter is applied to a circle having the same area as the cross section.
The circumferential length of the circumferential cross-sectional shape of the filter segment 13 can be appropriately changed according to the size of the product, but is usually 14.0 mm or more and 27.0 mm or less, preferably 15.0 mm or more and 26.0 mm or less, and more preferably 16.0 mm or more and 25.0 mm or less.
The axial length of the filter segment 13 can be appropriately changed according to the size of the product, but is usually 15 mm or more and 35 mm or less, preferably 17.5 mm or more and 32.5 mm or less, and more preferably 20.0 mm or more and 30.0 mm or less.

The airflow resistance per 120 mm of axial length of the filter segment 13 is not particularly limited, but is usually 40 _mmH2O or more and 300 _mmH2O or less, preferably 70 _mmH2O or more and 280 _mmH2O or less, and more preferably 90 _mmH2O or more and 260 _mmH2O or less.
The airflow resistance is measured according to the ISO standard method (ISO6565), for example, using a filter airflow resistance measuring device manufactured by Cerulean Co., Ltd. The airflow resistance of the filter segment 13 refers to the air pressure difference between the first end face and the second end face when air is flowed at a predetermined air flow rate (17.5 cc/min) from one end face (first end face) to the other end face (second end face) in a state where air does not pass through the side face of the filter segment 13. The unit is generally expressed in mmH ₂ O. It is known that the relationship between the airflow resistance of the filter segment 13 and the length of the filter segment 13 is proportional within the length range usually used (lengths of 5 mm to 200 mm), and if the length is doubled, the airflow resistance of the filter segment 13 doubles.

The form of the filter segment 13 is not particularly limited, and may be a plain filter including a single filter segment, or a multi-segment filter including multiple filter segments such as a dual filter or triple filter. When a multi-segment filter is used, a filter segment including a coolant according to one embodiment of the present invention and a filter segment not including a coolant may be provided. In this case, the filter segment including a coolant may be provided between the filter segment not including a coolant and the cooling segment, and the filter segment not including a coolant may be provided between the filter segment including a coolant and the cooling segment. From the viewpoint of easily adjusting the cooling effect of the coolant, it is preferable that the filter segment including a coolant is provided between the filter segment not including a coolant and the cooling segment.

The density of the filter material constituting the filter segment 13 is not particularly limited, but is usually 0.10 g/cm3 or ^more and 0.25 g/cm3 or ^less , preferably 0.11 g/ ^cm3 or more and 0.24 g/ ^cm3 or less, and more preferably 0.12 g/ ^cm3 or more and 0.23 g/ ^cm3 or less.

The form of the filter material contained in the filter segment 13 is not particularly limited, and may be any known form, such as cellulose acetate tow processed into a cylindrical shape.The single thread fineness and total fineness of the cellulose acetate tow are not particularly limited, but in the case of a mouthpiece part with a circumference of 22 mm, the single thread fineness is preferably 5g/9000m or more and 12g/9000m or less, and the total fineness is preferably 12000g/9000m or more and 35000g/9000m or less.The cross-sectional shape of the fiber of the cellulose acetate tow may be circular, elliptical, Y-shaped, I-shaped, R-shaped, etc. In the case of a filter filled with cellulose acetate tow, triacetin may be added in an amount of 5% by weight or more and 10% by weight or less relative to the weight of the cellulose acetate tow in order to improve the filter hardness.In addition, instead of the acetate filter, a paper filter filled with sheet-shaped pulp paper may be used.

The filter segment 13 can be manufactured by a known method. For example, when synthetic fibers such as cellulose acetate tow are used as the material of the filter medium, the filter segment 13 can be manufactured by spinning a polymer solution containing a polymer and a solvent and then crimping the polymer solution. For example, the method described in International Publication No. WO 2013/067511 can be used.

The filter medium may include a crushable additive release container (e.g., capsule) that includes a crushable shell such as gelatin. The capsule (also referred to in the art as an "additive release container") may be any known embodiment, for example, a crushable additive release container that includes a crushable shell such as gelatin. In this case, when the capsule is broken by a tobacco product user before, during, or after use, it releases a liquid or substance (usually a flavoring agent) contained in the capsule, which is then transferred to tobacco smoke during use of the tobacco product, and transferred to the surrounding environment after use.
The form of the capsule is not particularly limited, and may be, for example, a frangible capsule, and its shape is preferably a sphere. The additive contained in the capsule may include any of the additives described above, and preferably includes flavorings and activated carbon. In addition, one or more materials that help filter smoke may be added as the additive. The form of the additive is not particularly limited, and is usually a liquid or solid. The use of capsules containing additives is well known in the art. Frangible capsules and methods for producing them are well known in the art.
The flavoring agent may be, for example, menthol, spearmint, peppermint, fenugreek, or clove, medium chain triglycerides (MCT), etc. The flavoring agent may be menthol, or menthol, etc., or combinations thereof.

From the viewpoint of improving strength and structural rigidity, the filter segment 13 may be provided with a wrapper (filter plug wrapper) around which the above-mentioned filter material is wrapped. The form of the wrapper is not particularly limited, and may include one or more rows of seams containing adhesive. The adhesive may include a hot melt adhesive, and the hot melt adhesive may further include polyvinyl alcohol. In addition, when the filter is composed of two or more segments, it is preferable that the wrapper wraps these two or more segments together.
The material of the wrapper is not particularly limited, and any known material can be used, which may contain a filler such as calcium carbonate.
The thickness of the wrapper is not particularly limited, and is usually from 20 μm to 140 μm, preferably from 30 μm to 130 μm, and more preferably from 30 μm to 120 μm.
The basis weight of the roll is not particularly limited, and is usually from 20 gsm to 100 gsm, preferably from 22 gsm to 95 gsm, and more preferably from 23 gsm to 90 gsm.
Furthermore, the wrapper may be either coated or uncoated, but is preferably coated with a desired material from the standpoint of imparting functions other than strength and structural rigidity.

The filter segment 13 may further include a center hole segment having one or more hollow portions. The center hole segment is usually disposed closer to the cooling segment than the filter medium, and preferably adjacent to the cooling segment.

The center hole segment is composed of a filling layer having one or more hollow parts and an inner plug wrapper (inner wrapping paper) that covers the filling layer. For example, the center hole segment is composed of a filling layer having a hollow part and an inner plug wrapper that covers the filling layer. The center hole segment has a function of increasing the strength of the mouthpiece part. The filling layer can be, for example, a rod with an inner diameter of φ1.0 mm or more and φ5.0 mm or less, which is densely packed with cellulose acetate fibers and hardened by adding a plasticizer containing triacetin in an amount of 6% by mass or more and 20% by mass or less relative to the mass of cellulose acetate. Since the filling layer has a high fiber packing density, air and aerosol flow only through the hollow parts during inhalation and hardly flow inside the filling layer. Since the filling layer inside the center hole segment is a fiber packing layer, the touch from the outside during use is less likely to cause discomfort to the user. The center hole segment may not have an inner plug wrapper and its shape may be maintained by thermoforming.

The center hole segment and the filter medium may be connected, for example, by an outer plug wrapper (outer wrapping paper). The outer plug wrapper may be, for example, a cylindrical paper. The tobacco rod portion 11, the cooling segment 12, and the connected center hole segment and filter medium may be connected, for example, by a mouthpiece lining paper. These connections can be made, for example, by applying a glue such as a vinyl acetate glue to the inner surface of the mouthpiece lining paper, and then inserting and winding the tobacco rod portion 11, the cooling segment 12, and the connected center hole segment and filter medium. These may be connected in multiple separate instances using multiple lining papers.

(Cooling segment)
The cooling segment 12 is sandwiched adjacent to the tobacco rod portion and the filter segment, and is typically a rod-shaped member having a cavity such that the cross section in the circumferential direction is hollow (hollow), such as a cylinder.
The cooling segment of this embodiment may have the cavity filled with the coolant according to one embodiment of the present invention.

In this embodiment, the method of filling the cooling agent into the cooling segment is not particularly limited. For example, the cooling agent itself molded into a desired shape may be used as the cooling segment, or the cooling agent wrapped in a wrapping paper or the like that can be used for the filter segment may be used as the cooling segment. The cooling agent according to one embodiment of the present invention may be present uniformly throughout the cooling segment, or may be present concentrated in a portion of the cooling segment. Specific examples of the cooling agent concentrated in a portion of the cooling segment include a form in which the cooling agent is present concentrated on the tobacco rod side or the filter segment side, and a form in which the cooling agent is present concentrated on the periphery of a cross section perpendicular to the longitudinal direction. In addition, it is preferable that there is no gap between the cooling agent and other materials such as wrapping paper in a cross section perpendicular to the longitudinal direction.
The ratio of the coolant to the entire cooling segment is not particularly limited, but from the viewpoint of improving the cooling efficiency, it is usually 5 vol% or more, preferably 10 vol% or more, and more preferably 15 vol% or more, and is usually 100 vol% or less, and preferably 90 vol% or less.

As shown in Fig. 1, the cooling segment 12 may be provided with openings V (also referred to as "ventilation filters (Vf)" in the present technical field) in the circumferential direction and concentrically. The number of openings V is not particularly limited, and an example of the number of openings V is eight. Furthermore, the openings may be present in a region 4 mm or more from the boundary between the cooling segment and the filter segment toward the cooling segment.
The presence of the apertures V allows air to flow from the outside into the cooling section during use, lowering the temperature of the components and air flowing in from the tobacco rod section. Furthermore, by positioning the cooling segment within an area 4 mm or more from the boundary between the cooling segment and the filter segment toward the cooling segment, not only is the cooling capacity improved, but the retention of components generated by heating within the cooling segment is suppressed, improving the delivery amount of the components.
In addition, when an aerosol base material is used in the tobacco rod portion, vapor containing the aerosol base material and tobacco flavor components generated by heating the tobacco rod portion comes into contact with air from the outside and is cooled, thereby liquefying, thereby promoting the generation of an aerosol.
Furthermore, when the concentrically arranged holes V are treated as one hole group, the hole group may be one or may be two or more. When two or more hole groups are present, from the viewpoint of improving the delivery amount of the component generated by heating, it is preferable that no hole group is provided in a region less than 4 mm from the boundary between the cooling segment and the filter segment toward the cooling segment.
Furthermore, when the non-combustion heat-not-burn tobacco 10 is configured such that the tobacco rod portion 11, the cooling segment 12, and the filter segment 13 are wrapped with tipping paper 15, it is preferable that the tipping paper 15 has an opening immediately above the opening V provided in the cooling segment 12. When producing such a non-combustion heat-not-burn tobacco 10, a tipping paper 15 having an opening that overlaps with the opening V may be prepared and wound, but from the viewpoint of ease of production, it is preferable to produce the non-combustion heat-not-burn tobacco 10 using a cooling segment 12 that does not have an opening V, and then to open a hole that passes through both the cooling segment 12 and the tipping paper 15 at the same time.

From the viewpoint of improving the delivery of the component generated by heating, the region in which the opening V exists is not particularly limited as long as it is a region that is 2 mm or more away from the boundary between the cooling segment 12 and the filter segment 13 in the direction toward the cooling segment; however, from the viewpoint of further improving the delivery of the component, it is preferably 3 mm or more, more preferably 4 mm or more, more preferably 5 mm or more, and even more preferably 5.5 mm or more; and from the viewpoint of ensuring the cooling function, it is preferably 15 mm or less, more preferably 10 mm or less, and even more preferably 6 mm or less.
From the viewpoint of improving the delivery of components generated by heating, the area in which the opening V exists is preferably an area at least 22 mm away from the mouth end of the non-combustion heated tobacco in the direction of the cooling segment, preferably at least 23 mm, more preferably at least 24 mm, more preferably at least 25 mm, and even more preferably at least 25.5 mm; and from the viewpoint of ensuring the cooling function, it is preferably no more than 35 mm, more preferably no more than 30 mm, and even more preferably no more than 26 mm.
Furthermore, when considering the boundary between the cooling segment 12 and the tobacco rod portion 11 as a reference, when the axial length of the cooling segment 12 is 20 mm or more, from the viewpoint of ensuring the cooling function, the region in which the opening V exists is preferably a region that is 2 mm or more away from the boundary between the cooling segment 12 and the tobacco rod portion 11 toward the cooling segment side, more preferably 5 mm or more, even more preferably 10 mm or more, and particularly preferably 14.5 mm or more, and from the viewpoint of improving the delivery of the components generated by heating, it is preferably 18 mm or less, more preferably 16 mm or less, and even more preferably 14.5 mm or less.

The diameter of the opening V is not particularly limited, but is preferably 100 μm or more and 1000 μm or less, and more preferably 300 μm or more and 800 μm or less. The opening is preferably approximately circular or approximately elliptical, and in the case of an approximately elliptical shape, the diameter represents the major axis.

The length of the cooling segment in the longitudinal direction can be changed appropriately according to the size of the product, but is usually 4 mm or more, preferably 5 mm or more, and more preferably 26 mm or more, and is usually 31 mm or less, preferably 26 mm or less, and more preferably 21 mm or less. By setting the length of the cooling segment in the longitudinal direction to the above lower limit or more, a sufficient cooling effect can be ensured to obtain a good flavor, and by setting it to the above upper limit or less, loss due to the generated steam and aerosol adhering to the inner wall of the cooling segment can be suppressed.

[Tobacco rod part]
The tobacco rod portion 11 is not particularly limited as long as it is a known embodiment, but is usually configured by wrapping a tobacco filler in cigarette paper. The tobacco filler is not particularly limited, and known materials such as tobacco shreds and reconstituted tobacco sheets can be used. The tobacco filler may also contain an aerosol base material. The aerosol base material is a base material that generates an aerosol when heated, and examples of the aerosol base material include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.
The content of the aerosol base material in the tobacco filler is not particularly limited, and from the viewpoint of generating sufficient aerosol and imparting a good flavor, it is usually 5% by weight or more, preferably 10% by weight or more, and usually 50% by weight or less, preferably 15% by weight or more and 25% by weight or less, relative to the total amount of the tobacco filler.

Furthermore, the tobacco rod portion 11 may have a fitting portion with a heater member or the like for heating the non-combustion heat-not-burn tobacco.
The tobacco rod portion 11, which is formed by wrapping a tobacco filler in cigarette paper, preferably has a columnar shape, and in this case, it is preferable that the aspect ratio, represented by the height of the tobacco rod portion 11 in the longitudinal direction relative to the width of the bottom surface of the tobacco rod portion 11, is 1 or greater.
The shape of the bottom surface is not limited and may be polygonal, rounded polygonal, circular, elliptical, etc., and the width is the diameter when the bottom surface is circular, the major axis when the bottom surface is elliptical, and the diameter of the circumscribing circle or the major axis of the circumscribing ellipse when the bottom surface is polygonal or rounded polygonal. The height of the tobacco filler constituting the tobacco rod portion 11 is preferably about 10 to 70 mm, and the width is preferably about 4 to 9 mm.

The length of the tobacco rod portion 11 in the longitudinal direction can be changed appropriately according to the size of the product, but is usually 10 mm or more, preferably 12 mm or more, more preferably 15 mm or more, and even more preferably 18 mm or more, and is usually 70 mm or less, preferably 50 mm or less, more preferably 30 mm or less, and even more preferably 25 mm or less. In addition, the ratio of the length of the tobacco rod portion 11 to the longitudinal length h of the non-combustion heated tobacco 10 is usually 10% or more, preferably 20% or more, more preferably 25% or more, and even more preferably 30% or more, from the viewpoint of the balance between the delivery amount and the aerosol temperature, and is usually 60% or less, preferably 50% or less, more preferably 45% or less, and even more preferably 40% or less.

(Scrolling paper)
The composition of the cigarette paper is not particularly limited and may be a common embodiment, for example, a cigarette paper mainly composed of pulp. The pulp may be made from wood pulp such as softwood pulp or hardwood pulp, or may be made by mixing with non-wood pulp generally used in cigarette papers for tobacco products, such as flax pulp, hemp pulp, sisal pulp, or esparto.
As the type of pulp, chemical pulp produced by the kraft cooking method, acidic/neutral/alkaline sulfite cooking method, soda salt cooking method, etc., ground pulp, chemi-ground pulp, thermomechanical pulp, etc. can be used.

The above pulp is used in the papermaking process using a Fourdrinier papermaking machine, a cylinder papermaking machine, a combined cylinder and short-circuit papermaking machine, etc., to adjust and homogenize the texture of the paper to produce a cigarette paper. If necessary, a wet strength agent can be added to impart water resistance to the cigarette paper, or a sizing agent can be added to adjust the printing condition of the cigarette paper. In addition, papermaking internal additives such as aluminum sulfate, various anionic, cationic, nonionic, or amphoteric retention improvers, drainage improvers, and paper strength enhancers, as well as papermaking additives such as dyes, pH adjusters, defoamers, pitch control agents, and slime control agents can be added.

The basis weight of the cigarette paper base paper is, for example, usually 20 gsm or more, preferably 25 gsm or more, whereas the basis weight is usually 65 gsm or less, preferably 50 gsm or less, more preferably 45 gsm or less.
The thickness of the cigarette paper having the above-mentioned characteristics is not particularly limited, and from the viewpoints of rigidity, breathability, and ease of adjustment during papermaking, it is usually 10 μm or more, preferably 20 μm or more, and more preferably 30 μm or more, and is usually 100 μm or less, preferably 75 μm or less, and more preferably 50 μm or less.
The shape of the cigarette paper for the non-combustion heating tobacco can be, for example, square or rectangular.
When used as cigarette paper for wrapping a tobacco filler (for producing a tobacco rod portion), the length of one side can be about 12 to 70 mm, and the length of the other side can be 15 to 28 mm, with the preferred length of the other side being 22 to 24 mm, and more preferably about 23 mm. When wrapping a tobacco filler in cigarette paper in a cylindrical shape, for example, the end of the cigarette paper in the w direction and the end on the opposite side are overlapped by about 2 mm and glued together to form a cylindrical paper tube shape in which the tobacco filler is filled. The size of the rectangular cigarette paper can be determined depending on the size of the completed tobacco rod portion 11.
When the tobacco rod portion 11 and another member adjacent to the tobacco rod portion 11 are connected and wound together, such as with tipping paper, the length of one side may be 20 to 60 mm, and the length of the other side may be 15 to 28 mm.

In addition to the pulp, the cigarette paper may contain a filler. The content of the filler is, for example, 10% by weight or more and less than 60% by weight, preferably 15% by weight or more and 45% by weight or less, based on the total weight of the cigarette paper.
In the cigarette paper, within the preferred range of basis weight (25 gsm or more and 45 gsm or less), the filler content is preferably 15% by weight or more and 45% by weight or less.
Furthermore, when the basis weight is 25 gsm or more and 35 gsm or less, the filler is preferably 15 wt% or more and 45 wt% or less, and when the basis weight is more than 35 gsm and 45 gsm or less, the filler is preferably 25 wt% or more and 45 wt% or less.
As the filler, calcium carbonate, titanium dioxide, kaolin, etc. can be used, but it is preferable to use calcium carbonate from the viewpoint of enhancing flavor and whiteness.

Various auxiliaries other than the base paper and fillers may be added to the cigarette paper. For example, a water resistance improver may be added to improve water resistance. The water resistance improver includes a wet strength agent (WS agent) and a sizing agent. Examples of the wet strength agent include urea formaldehyde resin, melamine formaldehyde resin, polyamide epichlorohydrin (PAE), etc. Examples of the sizing agent include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), highly saponified polyvinyl alcohol with a saponification degree of 90% or more, etc.
As an auxiliary, a paper strength enhancer may be added, for example, polyacrylamide, cationic starch, oxidized starch, CMC, polyamide epichlorohydrin resin, polyvinyl alcohol, etc. In particular, it is known that the use of a very small amount of oxidized starch improves the air permeability (JP 2017-218699 A).
The wrapping paper may also be appropriately coated.

A coating agent may be added to at least one of the two surfaces of the wrapping paper, the front and back. There are no particular limitations on the coating agent, but a coating agent that can form a film on the surface of the paper and reduce liquid permeability is preferred. Examples include alginic acid and its salts (e.g., sodium salts), polysaccharides such as pectin, cellulose derivatives such as ethyl cellulose, methyl cellulose, carboxymethyl cellulose, and nitrocellulose, starch and its derivatives (e.g., ether derivatives such as carboxymethyl starch, hydroxyalkyl starch, and cationic starch, and ester derivatives such as starch acetate, starch phosphate, and starch octenyl succinate).

[Tip paper]
The configuration of the tipping paper 15 is not particularly limited and may be a general embodiment, for example, one containing pulp as the main component. The pulp may be made from wood pulp such as softwood pulp or hardwood pulp, or may be made by mixing non-wood pulp generally used in cigarette papers for tobacco products, such as flax pulp, hemp pulp, sisal pulp, or esparto. These pulps may be used alone or in combination in any ratio.
The tipping paper 15 may be made up of one sheet, or may be made up of multiple sheets or more.
As the form of pulp, chemical pulp by the kraft cooking method, acidic/neutral/alkaline sulfite cooking method, soda salt cooking method, etc., ground pulp, chemi-ground pulp, thermomechanical pulp, etc. can be used.
The tipping paper 15 may be produced by the production method described below, or a commercially available product may be used.
The shape of the tipping paper 15 is not particularly limited and can be, for example, square or rectangular.

The basis weight of the tipping paper 15 is not particularly limited, but is usually 32 gsm or more and 40 gsm or less, preferably 33 gsm or more and 39 gsm or less, and more preferably 34 gsm or more and 38 gsm or less.
The thickness of the tipping paper 15 is not particularly limited, and is usually 20 μm or more and 140 μm or less, preferably 30 μm or more and 130 μm or less, and more preferably 30 μm or more and 120 μm or less.
The air permeability of the tipping paper 15 is not particularly limited, but is usually 0 Coresta units or more and 30,000 Coresta units or less, and is preferably more than 0 Coresta units and 10,000 Coresta units or less. Note that the air permeability referred to in this specification is a value measured in accordance with ISO 2965:2009, and is expressed as the flow rate (cm ³ ) of gas passing through an area of 1 cm ² per minute when the differential pressure between both sides of the paper is 1 kPa. 1 Coresta unit (1 C.U.) is cm ³ /(min·cm ² ) under 1 kPa.

In addition to the pulp, the chip paper 15 may contain fillers, such as metal carbonates such as calcium carbonate and magnesium carbonate, metal oxides such as titanium oxide, titanium dioxide and aluminum oxide, metal sulfates such as barium sulfate and calcium sulfate, metal sulfides such as zinc sulfide, quartz, kaolin, talc, diatomaceous earth, gypsum, etc., and it is particularly preferable that the chip paper 15 contains calcium carbonate from the viewpoint of improving whiteness and opacity and increasing the heating rate. In addition, these fillers may be used alone or in combination of two or more types.

In addition to the pulp and fillers, the chip paper 15 may contain various auxiliary agents, for example, a water resistance improver to improve the strength. Water resistance improvers include wet strength agents (WS agents) and sizing agents. Examples of wet strength agents include urea formaldehyde resin, melamine formaldehyde resin, polyamide epichlorohydrin (PAE), etc. Examples of sizing agents include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohol with a saponification degree of 90% or more.

A coating agent may be added to at least one of the two surfaces, the front and back surfaces, of the tipping paper 15. There are no particular limitations on the coating agent, but a coating agent that can form a film on the surface of the paper and reduce liquid permeability is preferred.

[Method of manufacturing non-combustion heated tobacco]
The method for producing the non-combustion heating tobacco product described above is not particularly limited, and any known method can be used. For example, the tobacco product can be produced by wrapping a tobacco rod portion and a mouthpiece portion with tipping paper.

<Electrically heated tobacco products>
An electrically heated tobacco product according to another embodiment of the present invention (also simply referred to as an "electrically heated tobacco product") is an electrically heated tobacco product comprising an electrically heated device including a heater element, a battery unit that serves as a power source for the heater element, and a control unit for controlling the heater element, and the above-mentioned non-combustion heated tobacco inserted so as to be in contact with the heater element.
The electrically heated tobacco product may be configured to heat the outer peripheral surface of the non-combustion heated tobacco product 10 as shown in Fig. 2, or may be configured to heat the tobacco rod portion 11 of the non-combustion heated tobacco product 10 from the inside as shown in Fig. 3. The electrically heated device 20 shown in Figs. 2 and 3 has an air introduction hole, but this is not shown here. The electrically heated tobacco product 30 will be described below with reference to Fig. 3. Note that for the non-combustion heated tobacco product 10 in Figs. 2 and 3, some of the reference symbols representing the components shown in Fig. 1 are omitted.
The electrically heated tobacco product 30 is used by inserting the non-combustion heated tobacco product 10 described above into contact with the heater member 21 arranged inside the electrically heated device 20.
The electrically heated device 20 has a battery unit 22 and a control unit 23 inside a body 24 made of, for example, resin.
When the non-combustion heated tobacco 10 is inserted into the electrically heated device 20, the outer surface of the tobacco rod portion 11 comes into contact with the heater member 21 of the electrically heated device 20, and eventually the entire outer surface of the tobacco rod portion 11 and a portion of the outer surface of the tipping paper come into contact with the heater member 21.
The heater member 21 of the electrically heated device 20 generates heat under the control of the control unit 23. The heat is transmitted to the tobacco rod portion 11 of the non-combustion heat-not-burn tobacco 10, causing the aerosol base material, flavor components, and the like contained in the tobacco filler of the tobacco rod portion 11 to volatilize.

The heater member 21 may be, for example, a sheet heater, a flat heater, or a cylindrical heater. The sheet heater is a flexible sheet-shaped heater, and examples thereof include a heater including a film (thickness: about 20 to 225 μm) of a heat-resistant polymer such as polyimide. The flat heater is a rigid flat heater (thickness: about 200 to 500 μm), and examples thereof include a heater having a resistance circuit on a flat substrate and using that part as a heat generating part. The cylindrical heater is a hollow or solid cylindrical heater (thickness: about 200 to 500 μm), and examples thereof include a heater having a resistance circuit on the outer circumferential surface of a metal cylinder and using that part as a heat generating part. In addition, examples thereof include rod-shaped heaters and cone-shaped heaters made of metal or the like that have a resistance circuit inside and use that part as a heat generating part. The cross-sectional shape of the cylindrical heater may be a circle, an ellipse, a polygon, a rounded polygon, or the like.
In the case of an embodiment in which the outer peripheral surface of the non-combustion heat-not-burn tobacco 10 is heated as shown in Fig. 2, the above-mentioned sheet-shaped heater, flat plate-shaped heater, and cylindrical heater can be used. On the other hand, in the case of an embodiment in which the tobacco rod portion 11 of the non-combustion heat-not-burn tobacco 10 is heated from the inside as shown in Fig. 3, the above-mentioned flat plate-shaped heater, columnar heater, and cone-shaped heater can be used.
The length of the heater member 21 in the major axis direction can be within the range of L±5.0 mm, where the length of the tobacco rod portion 11 in the major axis direction is L mm. From the viewpoint of sufficiently transferring heat to the tobacco rod portion 11 and sufficiently volatilizing the aerosol base material and flavor components contained in the tobacco filling, i.e., from the viewpoint of aerosol delivery, the length of the heater member 21 in the major axis direction is preferably L mm or more, and from the viewpoint of suppressing the generation of components that have an undesirable effect on the flavor, etc., the length is preferably L+0.5 mm or less, L+1.0 mm or less, L+1.5 mm or less, L+2.0 mm or less, L+2.5 mm or less, L+3.0 mm or less, L+3.5 mm or less, L+4.0 mm or less, L+4.5 mm or less, or L+5.0 mm or less.

The heating intensity, such as the heating time and heating temperature of the non-combustion heated tobacco 10 by the heater member 21, can be preset for each electrically heated tobacco product 30. For example, by pre-heating for a certain period of time after inserting the non-combustion heated tobacco 10 into the electrically heated device 20, the non-combustion heated tobacco 10 can be heated until the temperature of the outer circumferential surface of the portion inserted into the electrically heated device 20 reaches X (°C), and thereafter, the temperature can be preset to be maintained at a constant temperature of X (°C) or less.
From the viewpoint of the delivery amount of components generated by heating, the above X (°C) is preferably 80°C or more and 400°C or less. Specifically, it can be 80°C, 90°C, 100°C, 110°C, 120°C, 130°C, 140°C, 150°C, 160°C, 170°C, 180°C, 190°C, 200°C, 210°C, 220°C, 230°C, 240°C, 250°C, 260°C, 270°C, 280°C, 290°C, 300°C, 310°C, 320°C, 330°C, 340°C, 350°C, 360°C, 370°C, 380°C, 390°C, or 400°C.
When heated by the heater member 21, steam containing components derived from the aerosol base material and components derived from flavor components is generated from the tobacco rod portion 11 and reaches the user's oral cavity through the mouthpiece portion 14, which is composed of a cooling segment 12, a filter segment 13, etc.

From the viewpoint of promoting the inflow of air from the outside and suppressing the retention of components and air generated by heating within the cooling segment 12, it is preferable that the opening V provided in the cooling segment 12 is located closer to the mouth end than the end of the region in contact with the electrically heated device 20 (the location indicated by the arrow X in the figure) in the cooling segment 12, as shown in Figure 4. In addition, the insertion port of the electrically heated device 20 for the non-combustion heated tobacco 10 may be tapered as shown in Figure 5 to make it easier to insert the non-combustion heated tobacco 10. In this case, the end of the region in contact with the electrically heated device 20 on the mouth end side is the location indicated by the arrow Y in the figure. Note that for the non-combustion heated tobacco 10 in Figures 4 and 5, some of the symbols representing the components shown in Figures 1 to 3 are omitted.

The present invention will be explained in more detail with reference to the following examples, but the present invention is not limited to the description of the following examples as long as it does not deviate from the gist of the present invention.

<Method of evaluating physical properties>
[BET specific surface area]
The BET specific surface area of the granular activated carbon was measured based on the nitrogen gas adsorption method (BET multipoint method) using a fully automatic gas adsorption measuring device Autosorb-1-MP (manufactured by Quanta Chrome Co.).

[Pore volume]
The pore volume of the granular activated carbon was calculated from the amount of adsorbed gas at P/PO = 0.998, based on pore distribution measurement by nitrogen gas adsorption method (measurement using a fully automatic gas adsorption amount measuring device Autosorb-1 MP (manufactured by Quanta Chrome Co.)), assuming that the pores are filled with liquid nitrogen.

[Median diameter]
The average particle size (median size) of the granular activated carbon and the coolant was measured by a dry sieve method in accordance with the method described in JIS Z 8815. In the particle size distribution obtained by this measurement, the particle size at which the volume integrated value is 50% (D50), 10% (D10), and 60% (D60) were evaluated.

[Bulk density]
The bulk density of the granular activated carbon and the coolant was evaluated using a Hosokawa Micron Powder Tester PT-X.

[Tap density]
The tap density of the granular activated carbon and the coolant was evaluated using a Hosokawa Micron Powder Tester PT-X.

[Compression ratio]
The compressibility of the granular activated carbon and the coolant was evaluated using a Hosokawa Micron Powder Tester PT-X.

[Angle of repose]
The angles of repose of the granular activated carbon and the coolant were measured using samples after storage for 12 to 24 hours in an environment of a temperature of 22° C. and a relative humidity of 60%, in accordance with the method described in JIS 9301-2-2, using a Powder Tester PT-X manufactured by Hosokawa Micron.

[Spatula angle]
The spatula angle of the granular activated carbon and the coolant was evaluated using a Hosokawa Micron Powder Tester PT-X.

[Uniformity]
The uniformity of the granular activated carbon and the coolant was evaluated using a Hosokawa Micron Powder Tester PT-X.

[Air flow index]
The air flowability index of the granular activated carbon and the coolant was evaluated using a Hosokawa Micron Powder Tester PT-X.

[Collapse angle]
The angles of collapse of the granular activated carbon and the coolant were evaluated using a Hosokawa Micron Powder Tester PT-X under the same conditions as those for the angle of repose described above.

[Difference angle]
The evaluation was made based on the value obtained by subtracting the collapse angle from the repose angle.

[Dispersion degree]
The degree of dispersion of the granular activated carbon and the coolant was evaluated using a Hosokawa Micron Powder Tester PT-X.

[Floodability index]
The floodability index of the granular activated carbon and the coolant was evaluated using a Hosokawa Micron Powder Tester PT-X.

[hardness]
The hardness of the granular activated carbon and the coolant was measured in accordance with the method described in JIS K1474 7.6, with an upper sieve limit of 0.500 and a lower sieve limit of 0.250, by shaking using a rotary tap type shaker manufactured by Kagaku Kyoeisha.

[Preparation of Coolant]
Example 1
Granular activated carbon (Kuraraycoal GGS-N 28/70) was used as the porous granular substrate contained in the coolant, and the BET specific surface area of the granular activated carbon was 1169 ^{m 2} /g and the pore volume was 0.493 mL/g.
The above granular activated carbon was put into a Spiraflow (manufactured by Freund Corporation), and centrifugal rotation, floating flow, and swirling flow were performed while rotating the rotor/agitator of the fluidized bed (rotor rotation speed 200 rpm, agitator rotation speed 300 rpm, agitator rotating in the opposite direction to the rotor), supplying hot air (supply air temperature 80°C, supply air volume 4.5 to 6.0 ^m3 /min) and exhausting the air.
While the activated carbon was being fluidized, an aqueous propylene glycol solution (water:propylene glycol=50:50) was atomized and slowly added at a spray rate of 380 mL/min.
The speed of solution addition, the temperature of the hot air, and the amount of air supplied were adjusted to balance the increase in moisture content due to the addition of the solution and the amount of moisture removed by the hot air, so that the moisture content could be maintained at a level that would keep the activated carbon in a fluid state.
After the entire amount of the solution was added, the granules were dried while being fluidized by supplying and exhausting hot air until the moisture content of the granules reached about 3 to 9% by weight.
The propylene glycol content of the resulting coolant was 28.0% by weight.
The physical properties of the granular activated carbon and the cooling agent are shown in Table 1 below.

Example 2
A coolant was prepared in the same manner as in Example 1, except that the granular activated carbon was changed from Kuraraycoal GGS-N 28/70 to Kuraraycoal GGS-T 28/70.
The BET specific surface area of the activated carbon (Kuraraycoal GGS-T 28/70) was 728 m ² /g, and the pore volume was 0.345 mL/g.
The propylene glycol content of the resulting coolant was 19% by weight.
The physical properties of the granular activated carbon and the cooling agent are shown in Table 1 below.

<Evaluation of cooling effect>
The cooling effect was evaluated using a heated air load test device (Endo Science Co., Ltd.) capable of performing evaluation in the evaluation system shown in Fig. 6. Specifically, first, compressed air (dry) was sent from the arrow A to water 44. At this time, the compressed air was sent so that the pressure gauge 41 indicated 0.65 MPa, and the pressure was controlled by the regulator 42 to be 0.5 MPa, and the flow rate of the compressed air was controlled by the thermal mass flow meter/controller 43 (manufactured by Kofloc Corporation, MODEL 8500) to be 10 mL/min to 20 mL/min.
Next, the air sent to the water 44 is sent to a three-neck flask (50 mL) 52. At this time, the water 44 was heated by a pipe heater 47 (manufactured by Hakko Denki Co., Ltd., 1 KW) using a temperature controller 45 (manufactured by Hakko Denki Co., Ltd., Fine Thermo DGN-100) so that the temperature of the water measured by the thermometer 46 was 50°C, and the flow rate of the air and the amount of water were controlled. Furthermore, in order to control the temperature of the air in the three-neck flask (50 mL) 52, a temperature controller 48 (manufactured by Toho Denki Co., Ltd., temperature controller TR2-303) and a small-flow gas heater 49 (manufactured by Shinnetsu Kogyo Co., Ltd.), as well as a temperature controller 50 (manufactured by Toho Denki Co., Ltd., temperature controller TR2-303) and a small-flow gas heater 51 (manufactured by Shinnetsu Kogyo Co., Ltd.) were used. By these means, the air sent to the three-neck flask (50 mL) 52 was controlled to have a temperature of 85.8° C., a moisture content of 82.8 g/m ³ , and a flow rate of 2.59 L/min.
Next, the air sent to the three-neck flask (50 mL) 52 passes through the specimen container 53, is sent to the three-neck flask (50 mL) 54, and is finally released from the arrow B. At this time, the temperature in the three-neck flask (50 mL) 52 measured by a thermocouple 56 (manufactured by KEYENCE CORPORATION, K type) and the temperature in the three-neck flask (50 mL) 54 measured by a thermocouple 55 (manufactured by HAKO ELECTRIC CO., LTD., K type) were recorded using a touch-type recorder 57 (manufactured by KEYENCE CORPORATION), and the cooling effect was evaluated from the difference between these temperatures (in reality, the temperature in the three-neck flask (50 mL) 52 was made constant, so the evaluation was performed using the temperature in the three-neck flask (50 ml) 54). The evaluation time (measurement time) was about 300 seconds. The specimen container 53 used was a glass tube with an inner diameter of 7.0 mm and an outer diameter of 10.0 mm, capable of containing a specimen, covered on the top and bottom in the air passage direction with a 198 μm mesh plain weave of 0.12 mm wire diameter.
FIG. 7 shows the results of evaluation of the cooling effect when nothing was put into the sample container 53 in FIG. 6 (empty case), and when the sample container 53 was filled with a PLA (polylactic acid) film filter (PLA sheet) used for cooling purposes in IQOS (manufactured by Philip Morris), a commercially available electrically heated tobacco product, a hollow filter used for cooling or suppressing heat transfer to the outer periphery in IQOS, the cooling agent obtained in the above Example 1, and the cooling agent obtained in the above Example 2. The horizontal axis of FIG. 7 is the measurement time, and the vertical axis is the measured temperature in the three-neck flask (50 ml) 54. In the above PLA sheet, the 18 mm rod portion taken out of the iQOS having a rod portion made of PLA sheet was placed directly into the sample container 53 for measurement, and in the above hollow filter, three pieces of 8 mm rod portions taken out of the iQOS having a rod portion of the hollow filter were cut to 6 mm, and these were stacked in the air flow direction to make 18 mm, which were placed in the sample container 53 for measurement. The coolant obtained in Example 1 and the coolant obtained in Example 2 were each added in an amount of 0.7 cc for the measurement.

From the results in Figure 7, it was found that the cooling effect was greater when the PLA sheet, the coolant of Example 1, or the coolant of Example 2 was placed in the specimen container 53 compared to when nothing was placed in the container or when a hollow filter was placed in the container, and further that Example 1 had the same cooling effect as the PLA sheet, and Example 2 had a better cooling effect than any of the specimens.
This is believed to be due to the fact that the coolant particles have a high heat removal capacity and that the porous rod has a structure that makes the most of the heat removal capacity of the coolant particles.

From the above, it has been found that by using a cooling agent according to one embodiment of the present invention, it is possible to provide a cooling agent for non-combustion heated tobacco that is highly efficient, safe, and stable, and that can reduce the temperature of the aerosol without adversely affecting the flavor of the aerosol and while minimizing the impact on manufacturing costs, as well as non-combustion heated tobacco and electrically heated tobacco products that contain the same.

10 Non-combustion heated tobacco 11 Tobacco rod portion 12 Cooling segment 13 Filter segment 14 Mouthpiece portion 15 Tip paper V Aperture 20 Electrically heated device 21 Heater member 22 Battery unit 23 Control unit 24 Body 30 Electrically heated tobacco product 41 Pressure gauge 42 Regulator 43 Thermal mass flow meter/controller 44 Water 45 Temperature controller 46 Thermometer 47 Pipe heater 48, 50 Temperature regulator 49, 51 Small-flow gas heater 52, 54 Three-neck flask 53 Sample container 55, 56 Thermocouple 57 Touch-type recorder

Claims (12)

A polyhydric alcohol and a porous granular substrate,
The polyhydric alcohol is impregnated into the granular substrate ;
A cooling agent for non-combustion heated tobacco, wherein the polyhydric alcohol is propylene glycol and/or glycerin . The cooling agent for non-combustion heat-not-burn tobacco according to claim 1, wherein the content of the polyhydric alcohol in the cooling agent for non-combustion heat-not-burn tobacco is 3% by weight or more and 39% by weight or less. The cooling agent for non-combustion heated tobacco according to claim 1 or 2, wherein the porous granular substrate is one or more selected from the group consisting of charcoal, calcium carbonate, cellulose, acetate, sugar, starch, and chitin. The cooling agent for non-combustion heated tobacco according to any one of claims 1 to 3, wherein the pore volume of the porous granular substrate is 0.3 mL/g or more and 0.8 mL/g or less. The cooling agent for non-combustion heated tobacco according to any one of claims 1 to 4, having an average particle size of 212 μm or more and 600 μm or less. The cooling agent for non-combustion heating tobacco according to any one of claims 1 to 5, having a bulk density of 0.55 g/ ^cm3 or more and 0.80 g/ ^cm3 or less. A non-combustion heated tobacco having a mouthpiece portion containing the cooling agent for non-combustion heated tobacco according to any one of claims 1 to 6. The non-combustion heated tobacco according to claim 7, wherein the mouthpiece portion has a cooling segment, and at least the cooling segment contains a cooling agent for the non-combustion heated tobacco. An electrically heated tobacco product comprising an electrically heated device including a heater member, a battery unit serving as a power source for the heater member, and a control unit for controlling the heater member, and the non-combustion heated tobacco according to claim 7 or 8, which is inserted so as to come into contact with the heater member. A step A of spraying or dropping a solution containing a polyhydric alcohol onto a porous granular substrate to obtain granules;
A step B of drying the granules;
A method for producing a cooling agent for non-combustion heated tobacco, comprising: The method for producing a cooling agent for non-combustion heat-not-burn tobacco according to claim 10, wherein in step A, the solution is sprayed or dripped onto the porous granular base material while the porous granular base material is fluidized to obtain granules. The method for producing a cooling agent for non-combustion heating tobacco according to claim 10 or 11, wherein the polyhydric alcohol is propylene glycol and/or glycerin.

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