JP7522863B2 - Non-combustion heated tobacco products and electrically heated tobacco products - Google Patents

Description

The present invention relates to non-combustion heated tobacco and electrically heated tobacco products.

In recent years, non-combustion heated tobacco, which is inserted into an electric heating device and used, has been developed as an alternative to cigarettes (Patent Document 1). The non-combustion heated tobacco generally comprises a tobacco rod in which tobacco shreds and a material that produces flavor components are wrapped in cigarette paper, a mouthpiece for inhaling the components produced from the tobacco rod by heating, and tipping paper around which these are wrapped.
Generally, in electrically heated tobacco products, a non-combustion heated tobacco is inserted into an electrically heated device, and then the heater member is turned on to generate heat, heating the tobacco rod from the point of contact with the heater member, and the generated components are delivered to the user.

Special table 2015-508676 publication

In addition to the components generated during use of non-combustion heat-not-burn tobacco, flavorings are sometimes added to tobacco rods to impart a desired flavor tone to users. However, because non-combustion heat-not-burn tobacco generates flavoring components through heating without combustion, there is a problem in that the added flavorings are not sufficiently delivered to users.
Therefore, an object of the present invention is to provide a non-combustion heated tobacco product and an electrically heated tobacco product in which the added flavoring is sufficiently delivered to the user.

After extensive research, the inventors discovered that the above problems could be solved by adding a fragrance to the filter medium, and thus arrived at the present invention.

That is, the gist of the present invention is as follows.
[1] A rod-shaped non-combustion heat-not-burn tobacco product comprising a tobacco rod portion and a mouthpiece portion,
The non-combustion heated tobacco comprises a mouthpiece portion including a cooling segment and a filter segment including a filter material, the tobacco rod portion and the cooling segment are adjacent to each other, and a flavoring is added to the filter material.
[2] The non-combustion heat-not-burn tobacco according to [1], wherein openings are provided concentrically in the circumferential direction of the cooling segment, and the openings are present in an area 4 mm or more and 7 mm or less in the direction of the cooling segment from the boundary between the cooling segment and the filter segment.
[3] The non-combustion heated tobacco product according to [1] or [2], wherein the filter segment includes a center hole segment having one or more hollow portions and a filter material.
[4] The non-combustion heat-not-burn tobacco according to any one of [1] to [3], wherein the amount of the flavoring added is 1 mg or more and 20 mg or less per non-combustion heat-not-burn tobacco.
[5] The non-combustion heating tobacco according to any one of [1] to [4], wherein the flavoring is menthol.
[6] 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 product according to any one of [1] to [5], which is inserted so as to come into contact with the heater member.

According to the present invention, it is possible to provide non-combustion heated tobacco and electrically heated tobacco products in which the added flavoring is sufficiently delivered to the user.

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 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. 1 is a graph showing the amount of menthol delivered in an example.

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.

<Non-combustion heated tobacco>
A non-combustion heated tobacco product according to one embodiment of the present invention (also simply referred to as a "non-combustion heated tobacco product") is a rod-shaped non-combustion heated tobacco product including a tobacco rod portion and a mouthpiece portion,
The mouthpiece portion includes a cooling segment and a filter segment containing a filter material, the tobacco rod portion and the cooling segment are adjacent to each other, and a flavoring is added to the filter material, making this a non-combustion heat-not-burn tobacco.
Unlike conventional cigarettes, non-combustion heated tobacco does not involve combustion, so the types and amounts of components produced during use are limited. Therefore, in the conventional technology, in order to adjust the flavor tone during use, a method of adding flavorings to the tobacco filler that constitutes the tobacco rod has been adopted. However, when flavorings are added to the tobacco filler, there is a problem that the amount of flavoring delivered to the user is insufficient.
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.

The non-combustion heated tobacco 10 shown in FIG. 1 is a rod-shaped non-combustion heated tobacco comprising a tobacco rod portion 11, a mouthpiece portion 14, and a tipping paper 15 wrapped around them. The mouthpiece portion 14 includes a cooling segment 12 and a filter segment 13 including a filter material. The cooling segment 12 is 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 filter segment 13 includes a filter material to which a flavoring is added.

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 nicotine and tar derived from tobacco leaves, and aerosol components derived from the aerosol base material.

The rod-shaped non-combustion heating tobacco 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), h is the height of the columnar body, 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, and 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 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 ratio of the length of the cooling segment and the length of the filter segment in the longitudinal direction of the non-combustion heat-not-burn tobacco (cooling segment:filter segment) is not particularly limited, but from the viewpoint of the amount of flavor delivered and an appropriate aerosol temperature, it is usually 0.60-1.40:0.60-1.40, preferably 0.80-1.20:0.80-1.20, more preferably 0.85-1.15:0.85-1.15, even more preferably 0.90-1.10:0.90-1.10, and particularly preferably 0.95-1.05:0.95-1.05. In particular, when the cooling segment is made longer, the particulation of the aerosol or the like is promoted and a good flavor can be achieved, but if it is too long, substances passing through the cooling segment will adhere to the inner wall.
By setting the length ratio of the cooling segment and the filter segment 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, and the function of adjusting the air volume and flavor of the filter, thereby achieving a good flavor and flavor intensity.

The air resistance in the longitudinal direction per 120 mm of the 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 in 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 portion 14 is not particularly limited as long as it includes a cooling segment 12 and a filter segment 13 including a filter material, and is configured such that the cooling segment 12 is sandwiched adjacent to the tobacco rod portion 11 and the filter segment 13 in the axial direction of the non-combustion heat-not-burn tobacco 10. 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 may be, for example, a tow (also simply referred to as "tow") made of synthetic fiber or a material such as paper processed into a cylindrical shape. Examples of general filter functions include 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 out.

In this embodiment, a flavoring is added to the filter material. By adding the flavoring to the filter material, the amount of flavoring delivered during use is increased compared to the conventional technology in which the flavoring is added to the tobacco filler constituting the tobacco rod. The degree of increase in the amount of flavoring delivered is further increased depending on the position of the openings provided in the cooling segment, which will be described later.
The method of adding the flavoring to the filter medium is not particularly limited, and the flavoring may be added so as to be dispersed substantially uniformly in the filter medium to which the flavoring is to be added. The amount of flavoring added to the filter may be 10 to 100% by volume of the filter medium. The flavoring may be added to the filter medium before the filter segment is formed, or may be added after the filter cigarette is formed.

The type of the flavoring is not particularly limited, and from the viewpoint of imparting a good flavor, the following may be used: acetanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise oil, apple juice, Peru balsam oil, beeswax absolute, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil, carob absolute, β -Carotene, carrot juice, L-carvone, β-caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, cinnamyl alcohol, cinnamyl cinnamate, citronella oil, DL-citronellol, clary sage extract, cocoa, coffee, konjac oil, coriander oil, cuminaldehyde, davana oil, δ-decalactone, γ-decalactone, decanoic acid, dill herb oil, 3,4-dimethyl-1,2-cyclopentanedione, 4,5-dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 3, 7-Dimethyl-6-octenoic acid, 2,3-dimethylpyrazine, 2,5-dimethylpyrazine, 2,6-dimethylpyrazine, ethyl 2-methylbutyrate, ethyl acetate, ethyl butyrate, ethyl hexanoate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl octanoate, ethyl oleate, ethyl palmitate, ethyl phenylacetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin, ethyl vanillin glucoside, 2-ethyl-3,(5 or 6)-dimethylpyrazine, 5-ethyl-3-hydroxy-4-methyl- 2(5H)-furanone, 2-ethyl-3-methylpyrazine, eucalyptol, fenugreek absolute, gene absolute, gentian root infusion, geraniol, geranyl acetate, grape juice, guaiacol, guava extract, gamma-heptalactone, gamma-hexalactone, hexanoic acid, cis-3-hexen-1-ol, hexyl acetate, hexyl alcohol, phenylhexyl acetate, honey, 4-hydroxy-3-pentenoic acid lactone, 4-hydroxy-4-(3-hydroxy-1-butenyl)-3,5,5-trimethyl-2-cyclohexen-1-ol On, 4-(para-hydroxyphenyl)-2-butanone, sodium 4-hydroxyundecanoate, immortelle absolute, beta-ionone, isoamyl acetate, isoamyl butyrate, isoamyl phenylacetate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute, cola nut tincture, labdanum oil, lemon terpeneless oil, licorice extract, linalool, linalyl acetate, lovage root oil, maltol, maple syrup, menthol, menthone, L-menthyl acetate, paramethoxybenzaldehyde, methyl-2-pyrrolyl ketone, anthraquinone, Methyl ranilate, methyl phenylacetate, methyl salicylate, 4'-methylacetophenone, methylcyclopentenolone, 3-methylvaleric acid, mimosa absolute, honeysuckle, myristic acid, nerol, nerolidol, gamma-nonalactone, nutmeg oil, delta-octalactone, octanal, octanoic acid, orange flower oil, orange oil, orris root oil, palmitic acid, omega-pentadecalactone, peppermint oil, petitgrain paraguay oil, phenethyl alcohol, phenethyl phenylacetate, phenylacetic acid, piperonal, plum extract, propenyl guaethol, acetic acid Propyl, 3-propylidenephthalide, prune juice, pyruvic acid, raisin extract, rose oil, rum, sage oil, sandalwood oil, spearmint oil, styrax absolute, marigold oil, tea distillate, alpha-terpineol, terpinyl acetate, 5,6,7,8-tetrahydroquinoxaline, 1,5,5,9-tetramethyl-13-oxacyclo(8.3.0.0(4.9))tridecane, 2,3,5,6-tetramethylpyrazine, thyme oil, tomato extract, 2-tridecanone, triethyl citrate, 4-(2,6,6-trimethyl Examples of the flavorings include ethyl-1-cyclohexenyl)2-buten-4-one, 2,6,6-trimethyl-2-cyclohexene-1,4-dione, 4-(2,6,6-trimethyl-1,3-cyclohexadienyl)2-buten-4-one, 2,3,5-trimethylpyrazine, γ-undecalactone, γ-valerolactone, vanilla extract, vanillin, veratraldehyde, violet leaf absolute, N-ethyl-p-menthane-3-carboxamide (WS-3), and ethyl-2-(p-menthane-3-carboxamide)acetate (WS-5), and menthol is particularly preferred. These flavorings may be used alone or in combination of two or more.

The filter segment 13 may be, for example, one produced by the production method described below, or a commercially available product.
Furthermore, the form of the filter segment 13 is not particularly limited, and it can be a filter including a single filter segment, or a multi-segment filter including a plurality of filter segments, such as a dual filter or triple filter.
In the case of a single filter segment, the filter material to which the flavoring is added is the filter segment itself. On the other hand, in the case of a plurality of filter segments, the filter material to which the flavoring is added is disposed upstream of the filter material constituting the mouth end. On the other hand, the flavoring may be added to the filter material constituting the filter segment constituting the mouth end. In addition, in the case of a plurality of filter segments, the flavoring may be added to all of the filter materials.
The amount of flavoring added, in terms of weight per non-combustion heated tobacco, can be, for example, 1 mg or more and 20 mg or less, preferably 3 mg or more and 15 mg or less, and more preferably 5 mg or more and 10 mg or less.

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 have a section such as a cavity (such as a center hole segment described later) 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 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 as the method.

The form of the filter material constituting the filter segment 13 is not particularly limited, and any known form may be adopted, for example, 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 member with a circumference of 22 mm, the single thread fineness is preferably 5 g/9000 m or more and 12 g/9000 m or less, and the total fineness is preferably 12000 g/9000 m or more and 35000 g/9000 m or less. The cross-sectional shape of the fiber of the cellulose acetate tow may be circular, elliptical, Y-shaped, I-shaped, or R-shaped. 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 to improve the filter hardness. In addition, a paper filter filled with sheet-shaped pulp paper may be used instead of the acetate filter.

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 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 to which the flavoring is added, and is preferably disposed 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 at 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.

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 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.
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.

(Cooling segment)
The cooling segment 12 is sandwiched adjacent to the tobacco rod portion and the filter segment, and is usually 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 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, as shown in Fig. 2. Although eight openings V are arranged concentrically in Fig. 2, the number of openings V is not limited to this. Furthermore, it is preferable that the openings are present in an area 4 mm or more from the boundary between the cooling segment and the filter segment toward the cooling segment.
The presence of the openings 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 providing the openings 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 in the cooling segment is suppressed, and the amount of the components delivered is improved. Furthermore, by increasing the amount of components generated by heating, the flavoring added to the filter is more easily delivered to the user together with 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 comes into contact with air from the outside and drops in temperature, thereby liquefying, which can promote 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.

The openings are preferably provided so that the proportion of air flowing in from the openings when inhaling at 17.5 ml/sec with an automatic smoking machine (the volume proportion of air flowing in from the openings when the proportion of air inhaled from the mouth end is taken as 100 volume%) is 10 to 90 volume%, preferably 50 to 80 volume%, more preferably 55 to 75 volume%. For example, this can be achieved by selecting the number of openings V per opening group from the range of 5 to 50, selecting the diameter of the openings V from the range of 0.1 to 0.5 mm, and combining these selections.
The air inflow ratio can be measured using an automatic smoking machine (for example, a single-cigarette automatic smoking machine manufactured by Borgwaldt) according to a method in accordance with ISO9512.

From the viewpoint of improving the delivery of the components generated by heating and also increasing the delivery amount of the fragrance added to the filter, the region where the opening V exists is preferably a region of 2 mm or more from the boundary between the cooling segment 12 and the filter segment 13 in the direction toward the cooling segment, but from the viewpoint of further improving the delivery ability of the components and the fragrance, it is preferably 3 mm or 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 and also increasing the delivery amount of flavoring added to the filter, the area where the opening V exists is preferably an area of 22 mm or more from the mouth end of the non-combustion heated tobacco toward the cooling segment, preferably 23 mm or more, more preferably 24 mm or more, more preferably 25 mm or more, and even more preferably 25.5 mm or more, and from the viewpoint of ensuring the cooling function, it is preferably 35 mm or less, more preferably 30 mm or less, and even more preferably 26 mm or less.
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 extending from the boundary between the cooling segment 12 and the tobacco rod portion 11 toward the cooling segment by 2 mm or more, 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, more preferably 100 μm or more and 500 μm or less, and even 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 major axis direction can be appropriately changed according to the size of the product, but is usually 15 mm or more, preferably 20 mm or more, and more preferably 25 mm or more, and is usually 40 mm or less, preferably 35 mm or less, and more preferably 30 mm or less. By setting the length of the cooling segment in the major axis 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 adhesion of the generated steam and aerosol to the inner wall of the cooling segment can be suppressed.
When a sheet or the like for cooling is filled in the cooling segment 12, the total surface area of the cooling segment 12 is not particularly limited and may be, for example, 300 ^mm2 /mm or more and 1000 ^mm2 /mm or less. This surface area is the surface area per mm of the length (mm) in the air passage direction of the cooling segment 12. The total surface area of the cooling segment 12 is preferably ⁴⁰⁰ mm2/mm or more, more preferably ⁴⁵⁰ mm2/mm or more, while it is preferably ⁶⁰⁰ mm2/mm or less, and more preferably 550 ^mm2 /mm or less.

It is desirable for the cooling segment 12 to have a large total surface area for its internal structure. Thus, in a preferred embodiment, the cooling segment 12 may be formed by a thin sheet of material that is wrinkled to form channels, and then pleated, gathered, and folded. The more folds or pleats within a given volume of the element, the greater the total surface area of the cooling segment.

The thickness of the constituent material of the cooling segment 12 is not particularly limited and may be, for example, 5 μm or more and 500 μm or less, or 10 μm or more and 250 μm or less.

[Tobacco rod part]
The form of the tobacco rod portion 11 is not particularly limited as long as it is a known form, but is usually a form in which a tobacco filler is wrapped in cigarette paper. The tobacco rod portion 11 may also have a fitting portion with a heater member or the like for heating the tobacco product.
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 may be appropriately changed 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 length h of the non-combustion heated tobacco 10 in the longitudinal direction is not particularly limited, but from the standpoint of the balance between the delivery amount and the aerosol temperature, it is usually 10% or more, preferably 20% or more, more preferably 25% or more, and even more preferably 30% or more, and is usually 80% or less, preferably 70% or less, more preferably 60% or less, even more preferably 50% or less, particularly preferably 45% or less, and most preferably 40% or less, from the standpoint of the balance between the delivery amount and the aerosol temperature.

(Tobacco filling)
(1) First Tobacco Filler First, the first tobacco filler (also simply referred to as "first filling") will be described. The material of the tobacco shreds contained in the first filling is not particularly limited, and known materials such as lamina and ribs can be used. Alternatively, the tobacco shreds may be made by crushing dried tobacco leaves to an average particle size of 20 μm or more and 200 μm or less to obtain tobacco shreds, which are homogenized and processed into a sheet (hereinafter simply referred to as homogenized sheet). Furthermore, the tobacco rod may be filled with a homogenized sheet having a length approximately equal to the longitudinal direction of the tobacco rod, which is shredded approximately horizontally to the longitudinal direction of the tobacco rod, to form a so-called strand type.
In addition, the width of the tobacco shreds is preferably 0.5 mm or more and 2.0 mm or less in terms of filling the tobacco rod. In the case of a tobacco rod having a circumference of 22 mm and a length of 20 mm, the content of the tobacco filler in the tobacco rod can be 200 mg/rod part or more and 800 mg/rod part or less, and preferably 250 mg/rod part or more and 600 mg/rod part or less.

Regarding the tobacco leaves used for the preparation of the tobacco shreds and homogenized sheet, various types of tobacco can be used. For example, flue-cured tobacco, burley, orient, native tobacco, other Nicotiana tabacum varieties, Nicotiana rustica varieties, and mixtures thereof can be mentioned. As for the mixture, the above varieties can be appropriately blended to achieve the desired taste. Details of the tobacco varieties are disclosed in "Encyclopedia of Tobacco, Tobacco Research Center, March 31, 2009". There are several conventional methods for producing the homogenized sheet, that is, the method for grinding tobacco leaves and processing them into a homogenized sheet. The first method is to produce a paper-making sheet using a papermaking process. The second method is to mix an appropriate solvent such as water with the ground tobacco leaves to homogenize them, and then cast the homogenized material thinly on a metal plate or metal plate belt and dry it to produce a cast sheet. The third method is to mix an appropriate solvent such as water with the ground tobacco leaves to homogenize them, and extrude them into a sheet to produce a rolled sheet. The types of the homogenizing sheets are disclosed in detail in "Encyclopedia of Tobacco, Tobacco Research Center, March 31, 2009."

The moisture content of the tobacco filler is, for example, 10% by weight or more and 15% by weight or less, and preferably 11% by weight or more and 13% by weight or less, based on the total weight of the tobacco filler. Such a moisture content suppresses the occurrence of rolling stains and improves the suitability for rolling during the production of a tobacco rod.
There are no particular limitations on the size of the tobacco shreds contained in the first tobacco filler or the method for preparing the same. For example, dried tobacco leaves shredded to a width of 0.5 mm or more and 2.0 mm or less may be used.
In addition, when using ground material for a homogenized sheet, dried tobacco leaves may be ground to an average particle size of about 20 to 200 μm, homogenized, processed into a sheet, and then chopped into a width of 0.5 mm or more and 2.0 mm or less.

The first tobacco filling may include an aerosol base for generating aerosol smoke. The type of the aerosol base is not particularly limited, and various extracts from natural products and/or their components may be selected depending on the application. Examples of the aerosol base include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.
The content of the aerosol base material in the first tobacco filling material 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 filling material.

The first tobacco filling may contain a flavoring. The type of flavoring is not particularly limited, and the same types of flavorings that can be added to filter media can be used.
The content of the flavoring in the first tobacco filling is not particularly limited, and can be appropriately set in consideration of the content of the flavoring added to the filter medium.

The filling density of the first tobacco filling material is not particularly limited, but from the viewpoint of ensuring the performance of the first non-combustion heated tobacco and imparting a good flavor, it is usually 250 mg/ ^cm3 or more, preferably 300 mg/ ^cm3 or more, and usually 400 mg/ ^cm3 or less, preferably 350 mg/ ^cm3 or less.
The first tobacco filler is wrapped in cigarette paper so that the first tobacco filler is on the inside to form a tobacco rod portion 11.

(2) Second Tobacco Filler The second tobacco filler is composed of a tobacco sheet filled in a filler. The number of tobacco sheets may be one, or two or more.

In the case where the second tobacco filling is composed of a single tobacco sheet, for example, a tobacco sheet with one side having a length approximately equal to the longitudinal direction of the filling is folded multiple times horizontally to the longitudinal direction of the filling (so-called gathered sheet) is included. Another example is a tobacco sheet with one side having a length approximately equal to the longitudinal direction of the filling, wound in a direction perpendicular to the longitudinal direction of the filling.

In the case where the second tobacco filling is composed of two or more tobacco sheets, for example, multiple tobacco sheets, one side of which has a length approximately equal to the longitudinal direction of the filling, are packed in a wound state in a direction perpendicular to the longitudinal direction of the filling so that they are arranged concentrically.
The term "concentrically arranged" refers to the arrangement in which the centers of all the tobacco sheets are located at approximately the same position. The number of tobacco sheets is not particularly limited, but examples include embodiments in which the number of tobacco sheets is 2, 3, 4, 5, 6, or 7.
The two or more tobacco sheets may all have the same composition or physical properties, or some or all of the tobacco sheets may have different compositions or physical properties. Furthermore, the thicknesses of the tobacco sheets may be the same or different.

The second tobacco filler can be produced by preparing a plurality of tobacco sheets of different widths, stacking them together so that the width decreases from the bottom to the top, and passing this through a winding tube to roll and shape it.
According to this manufacturing method, the plurality of tobacco sheets extend in the longitudinal direction and are arranged concentrically about the longitudinal axis, and a fitting portion extending in the longitudinal direction may be formed between the longitudinal axis and the innermost tobacco sheet.

In this manufacturing method, the laminate is preferably prepared so that a non-contact portion is formed between adjacent tobacco sheets after rolling. If there are non-contact portions (gaps) between multiple tobacco sheets where the tobacco sheets are not in contact, a flavor flow path can be secured to improve the delivery efficiency of the flavor components. On the other hand, heat from the heater can be transferred to the outer tobacco sheet via the contact portion of the multiple tobacco sheets, ensuring high heat transfer efficiency.
In order to provide non-contact portions between multiple tobacco sheets where the tobacco sheets do not come into contact, for example, methods include using an embossed tobacco sheet, laminating adjacent tobacco sheets without bonding their entire surfaces together, laminating adjacent tobacco sheets by bonding only a portion of the sheets together, or laminating adjacent tobacco sheets by lightly bonding their entire surfaces or a portion of the sheets together so that they can be peeled off after rolling and molding, thereby preparing a laminate.
When preparing a tobacco rod including cigarette paper, the cigarette paper may be placed at the bottom of the layered product.
Alternatively, the fitting portion can be formed by placing a cylindrical dummy such as a mandrel on the top of the laminate to form the second tobacco filler, and then removing the dummy.

The filling density of the second tobacco filling material is not particularly limited, but from the viewpoint of ensuring the performance of the tobacco product and imparting a good flavor, it is usually 250 mg/ ^cm3 or more, preferably 300 mg/ ^cm3 or more, and usually 400 mg/ ^cm3 or less, preferably 350 mg/ ^cm3 or less.

The amount of the second tobacco filling material contained per filling is not particularly limited, but for example, in the case of a tobacco rod portion having a circumference of 22 mm and a length of 20 mm, the amount can be 200 mg or more and 800 mg or less per rod portion, with preferred examples being 250 mg or more and 600 mg or less per rod portion.

The tobacco sheet may contain an aerosol base material. In this specification, an aerosol base material is a base material that generates an aerosol. An aerosol source such as glycerin, propylene glycol, or a polyol such as 1,3-butanediol is added as the aerosol base material. The amount of such an aerosol base material added is preferably 5% by weight or more and 50% by weight or less, and more preferably 15% by weight or more and 25% by weight or less, based on the dry weight of the tobacco sheet.

The tobacco sheet can be appropriately manufactured by a known method such as papermaking, slurry, rolling, etc. The homogenized sheet described in the first tobacco filler can also be used.
In the case of papermaking, tobacco can be produced by a method including the following steps: 1) Dried tobacco leaves are roughly crushed and extracted with water to separate the water extract and residue. 2) The water extract is dried under reduced pressure and concentrated. 3) Pulp is added to the residue, which is then fiberized in a refiner and made into paper. 4) A concentrated liquid of the water extract is added to the paper-made sheet and dried to produce a tobacco sheet. In this case, a step of removing some components such as nitrosamines may be added (see JP-T 2004-510422).
In the case of the slurry method, the tobacco leaf can be produced by a method including the following steps: 1) mixing water, pulp, a binder, and crushed tobacco leaves; 2) spreading (casting) the mixture thinly and drying. In this case, a step of removing some of the components such as nitrosamines by irradiating the slurry of the water, pulp, binder, and crushed tobacco leaves with ultraviolet light or X-rays may be added.

Alternatively, as described in WO 2014/104078, a nonwoven tobacco sheet may be used that is manufactured by a method that includes the following steps: 1) mixing powdered tobacco leaves with a binder; 2) sandwiching the mixture between nonwoven fabrics; and 3) forming the laminate into a certain shape by thermal welding to obtain a nonwoven tobacco sheet.
The type of tobacco leaf material used in each of the above-mentioned methods can be the same as that explained for the first filling material.
The composition of the tobacco sheet is not particularly limited, but for example, the content of the tobacco raw material (tobacco leaf) is preferably 50% by weight or more and 95% by weight or less with respect to the total weight of the tobacco sheet. The tobacco sheet may also contain a binder, and examples of such binders include guar gum, xanthan gum, CMC (carboxymethylcellulose), and CMC-Na (sodium salt of carboxymethylcellulose). The amount of the binder is preferably 1% by weight or more and 10% by weight or less with respect to the total weight of the tobacco sheet. The tobacco sheet may further contain other additives. Examples of additives include fillers such as pulp. In this embodiment, a plurality of tobacco sheets are used, and the tobacco sheets may all have the same composition or physical properties, or some or all of the tobacco sheets may have different compositions or physical properties.

The second tobacco filler can be produced by preparing a plurality of tobacco sheets of different widths, stacking them so that the width decreases from the bottom to the top, and rolling the stack through a rolling tube. According to this production method, the plurality of tobacco sheets extend in the longitudinal direction and are arranged concentrically about the longitudinal axis. A fitting portion extending in the longitudinal direction may be formed between the longitudinal axis and the innermost tobacco sheet.
In this manufacturing method, it is preferable that the laminate is prepared so that non-contact portions are formed between adjacent tobacco sheets after rolling and forming.
When there are non-contact portions (gaps) between multiple tobacco sheets, where the tobacco sheets are not in contact with each other, a flavor flow path can be secured to improve the delivery efficiency of the flavor components. On the other hand, when the tobacco product is used in an electrically heated tobacco product, heat from the heater can be transferred to the outer tobacco sheet via the contact portions of the multiple tobacco sheets, ensuring high heat transfer efficiency.

In order to provide non-contact portions between multiple tobacco sheets where the tobacco sheets do not come into contact, for example, methods include using an embossed tobacco sheet, laminating adjacent tobacco sheets without bonding their entire surfaces together, laminating adjacent tobacco sheets by bonding only a portion of the sheets together, or laminating adjacent tobacco sheets by lightly bonding their entire surfaces or a portion of the sheets together so that they can be peeled off after rolling and molding, thereby preparing a laminate.
When preparing a tobacco rod portion including cigarette paper, the cigarette paper may be disposed at the bottommost part of the laminate.
Alternatively, the fitting portion can be formed by placing a cylindrical dummy such as a mandrel on the top of the laminate to form the second tobacco filler, and then removing the dummy.
The thickness of each tobacco sheet is not limited, but is preferably 150 μm or more and 1000 μm or less, and more preferably 200 μm or more and 600 μm or less, in consideration of the balance between heat transfer efficiency and strength. The thicknesses of each tobacco sheet may be the same or different.
The number of tobacco sheets constituting the second tobacco filler is not particularly limited, but may be, for example, 2, 3, 4, 5, 6, or 7.

(3) Third Tobacco Filler The third tobacco filler is composed of tobacco granules.
The raw materials of the third tobacco filler are not particularly limited, but may include (a) ground tobacco material, (b) moisture, (c) at least one pH adjuster selected from the group consisting of potassium carbonate and sodium bicarbonate, and (d) at least one binder selected from the group consisting of pullulan and hydroxypropyl cellulose.

The ground tobacco material (component (a)) contained in the third tobacco filler includes ground tobacco leaves, ground tobacco sheets, etc. Types of tobacco include Burley, flue, and Oriental. The tobacco material is preferably ground to a size of 200 μm or more and 300 μm or less.
The raw material mixture for the third tobacco filler typically contains ground tobacco material in an amount of not less than 20% by weight and not more than 80% by weight.

The moisture (component (b)) contained in the third tobacco filling is intended to maintain the integrity of the tobacco granules.
The raw material mixture of the third tobacco filler typically contains moisture in an amount of 3% by weight or more and 13% by weight or less. The third tobacco filler may also typically contain moisture in an amount of 5% by weight or more and 17% by weight or less in terms of loss on drying. Loss on drying refers to the change in weight before and after drying when a part of a sample is taken for measurement and the sample is completely dried by evaporating all the moisture in the taken sample (for example, when dried for 15 minutes at a constant temperature (105°C)), and specifically refers to the ratio (wt%) of the combined amount of the moisture content of the sample and the amount of the volatile components that volatilize under the above drying conditions to the weight of the sample. That is, loss on drying (wt%) can be expressed by the following formula:
Loss on drying (wt%) = {(weight of sample before complete drying) - (weight of sample after complete drying)} x 100 / weight of sample before complete drying

The pH adjuster (component (c)) contained in the third tobacco filling comprises potassium carbonate, sodium bicarbonate or a mixture thereof. These pH adjusters adjust the pH of the third tobacco filling to the alkaline side, thereby promoting the release of flavor components contained in the third tobacco filling from the tobacco granules, and providing a flavor that is satisfactory to users.
The raw material mixture for the third tobacco filling may contain a pH adjuster, usually in an amount of 5% by weight or more and 20% by weight or less.

The binder (component (d)) contained in the third tobacco filler binds the tobacco granule components together to maintain the integrity of the tobacco granules. The binder is composed of pullulan, hydroxypropyl cellulose (HPC) or a mixture thereof.
The raw material mixture for the third tobacco filler may contain a binder, usually in an amount of not less than 0.5% by weight and not more than 15% by weight.

The third tobacco filling may consist of components (a), (b), (c) and (d) above, but may further include additional components.
Additional components include an aerosol base (component (e)). The aerosol base generates an aerosol smoke. The aerosol base is composed of a polyhydric alcohol, which may include glycerin, propylene glycol, sorbitol, xylitol, and erythritol. These polyhydric alcohols may be used alone or in combination of two or more.
When the raw material mixture of the third tobacco filler contains an aerosol base, it may contain it in an amount of 5 to 15% by weight.
The additional ingredients also include (f) flavoring materials (solid or liquid) other than the flavoring ingredients. Such flavoring materials include sugar (sucrose, fructose, etc.), cocoa powder, carob powder, coriander powder, licorice powder, orange peel powder, rose pip powder, chamomile flower powder, lemon verbena powder, peppermint powder, leaf powder, spearmint powder, black tea powder, menthol, etc.
The raw material mixture for the third tobacco filler may contain the flavoring material in an amount of not less than 0.5% by weight and not more than 30% by weight. The flavoring material may be added to components (a), (b), (c), and (d) by directly kneading the flavoring material with the components, or may be added to the components by supporting the flavoring material in a known inclusion host compound such as cyclodextrin to prepare an inclusion compound and then kneading the inclusion compound with the components.
When the third tobacco filling consists of the above components (a), (b), (c), (d) and (e), the raw material mixture of the third tobacco filling may typically contain component (a) in an amount of about 33% by weight or more (about 90% by weight or less).

The third tobacco filler is obtained by mixing components (a), (c), and (d) and, if desired, components (e) and (f), adding component (b) to the mixture and kneading the mixture, granulating the resulting kneaded mixture (in a long columnar shape) in a wet extrusion granulator, and then regulating the granules into a short columnar or spherical shape. The average particle size (D50) of the resulting tobacco granules is usually 0.2 mm or more and 1.2 mm or less, preferably 0.2 mm or more and 1.0 mm or less, and more preferably 0.2 mm or more and 0.8 mm or less.
In extrusion granulation, it is preferable to extrude the kneaded material at ambient temperature and at a pressure of 2 kN or more. This high-pressure extrusion causes the temperature of the kneaded material at the outlet of the extrusion granulator to rise instantaneously from ambient temperature to, for example, 90 to 100°C, and moisture and volatile components evaporate by 2% by weight or more and 4% by weight or less. Therefore, the amount of water blended to prepare the kneaded material can be greater than the desired moisture content in the tobacco granules, which are the final product, by the amount of evaporation described above.

The tobacco granules obtained by extrusion granulation may be further dried as necessary to adjust the moisture content. For example, if the loss on drying of the tobacco granules obtained by extrusion granulation is measured and is higher than the desired loss on drying (e.g., 5% by weight or more and 17% by weight or less), the tobacco granules may be further dried to obtain the desired loss on drying. The drying conditions (temperature and time) for obtaining the desired loss on drying can be determined in advance as the drying conditions (temperature and time) required to reduce the loss on drying by a predetermined value, and set based on those conditions.

The third tobacco filling material may consist only of the tobacco granules described above, but may also contain additional tobacco materials. The additional tobacco materials are usually shredded or finely powdered tobacco leaves. The additional tobacco materials may be used in a mixture with the tobacco granules.

(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.
In the case of a wrapping that connects the tobacco rod portion 11 and another member adjacent to the tobacco rod portion 11, such as 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 for 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 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 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 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 preferably more than 0 Coresta units and 10,000 Coresta units or less. The air permeability is a value measured in accordance with ISO 2965:2009, and is expressed as the flow rate ( ^cm3 ) of gas passing through an area of 1 ^cm2 per minute when the differential pressure between both sides of the paper is 1 kPa. One Coresta unit (1 C.U.) is ^cm3 /(min· ^cm2 ) 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 heat-not-burn tobacco]
The manufacturing method of the non-combustion heating tobacco described above is not particularly limited, and a known method can be applied. For example, the tobacco rod part and the mouthpiece part can be manufactured by wrapping them with tipping paper. In this embodiment, in the process of forming the mouthpiece part, either a flavoring is added to the filter material before constructing the filter segment, or a flavoring is added to the filter material after constructing the filter segment can be used.

<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. 3, 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. 4. The electrically heated device 20 shown in Figs. 3 and 4 is provided with an air introduction hole, but this is not shown here. The electrically heated tobacco product 30 will be described below with reference to Fig. 4. Note that for the non-combustion heated tobacco product 10 in Figs. 3 and 4, some of the reference symbols representing the components shown in Figs. 1 and 2 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. 3, 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. 4, 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 product 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 product 10 into the electrically heated device 20, the temperature of the outer circumferential surface of the portion of the non-combustion heated tobacco product 10 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 point indicated by the arrow X in the figure) in the cooling segment 12, as shown in Figure 5. 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 6 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 position indicated by the arrow Y in the figure. Note that for the non-combustion heated tobacco 10 in Figures 5 and 6, some of the symbols representing the components shown in Figures 1 to 4 are omitted.

The present invention will be explained in more detail by way of 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.

<Production of non-combustion heat-not-burn tobacco>
[Example 1]
The tobacco filler was prepared by adding shredded sheet tobacco, glycerin, and propylene glycol. The tobacco filler was rolled up with cigarette paper (manufactured by Nippon Paper Papylia, basis weight 35 g/ ^m2 , thickness 52 μm) using a high-speed rolling machine. The shredded weight per cigarette was 0.8 g, the roll circumference was 22 mm, and the roll length was 68 mm. The rolled tobacco rods were stored in plastic airtight containers, 200 per level. The stored tobacco rods were cut to a length of 20 mm.
A flavoring (menthol) was added to the filter material in advance (7 mg/piece), and a filter segment was prepared, which was made of a filter packed with cellulose acetate fibers having a length of 8 mm.
Then, the tobacco rod portion, a 20 mm long paper tube (cooling segment), a center hole filter (5.8Y35000) with a 12 mm long through hole (diameter 4.5 mm), and the above filter segment were wrapped with the tipping paper prepared above to produce a non-combustion heated tobacco without any openings. Then, 17 holes were drilled concentrically around the periphery of the cooling segment and penetrating both the tipping paper and the cooling segment at a position 5.5 mm toward the cooling segment from the boundary between the cooling segment and the filter segment (25.5 mm from the mouth end of the non-combustion heated tobacco), to provide openings. Thus, the non-combustion heated tobacco of Example 1 was produced.
The diameter of the aperture was adjusted so that the air inflow rate from the aperture was 72% by volume when inhaling at 17.5 ml/sec with a Borgwaldt single-puff automatic smoking machine. This air inflow rate was measured by a method conforming to ISO 9512. In all of the examples and comparative examples described below, the diameter of the aperture was adjusted so that the air inflow rate was 72% by volume.

[Example 2]
The non-combustion heated tobacco of Example 2 was produced using the same method as in Example 1, except that the position of the opening was changed from the boundary between the cooling segment and the filter segment to a position 2 mm toward the cooling segment (22 mm from the mouth end of the non-combustion heated tobacco).

[Comparative Example 1]
A non-combustion heat-not-burn tobacco product of Comparative Example 1 was produced in the same manner as in Example 1, except that the flavoring was added to the tobacco filler rather than to the filter medium.

[Comparative Example 2]
The non-combustion heated tobacco of Comparative Example 2 was produced using the same method as in Comparative Example 1, except that the position of the opening was changed from the boundary between the cooling segment and the filter segment to a position 2 mm toward the cooling segment (22 mm from the mouth end of the non-combustion heated tobacco).

<Evaluation of flavor delivery amount>
The non-combustion heat-not-burn tobacco products prepared in Examples 1 and 2 and Comparative Examples 1 and 2 were subjected to a smoking test, and the delivery amount of components generated by heating was evaluated.
The smoking test was carried out under the following conditions with reference to the Canadian Intense Regime (CIR).
An electric heating device that heats the periphery was used, and after inserting a non-combustion heated tobacco, the heater temperature was raised to 295°C within 21 seconds, lowered to 260°C within 5 seconds, and maintained at 260°C until the end of the evaluation (about 330 seconds). After this, the smoking test was performed using a Borgwaldt single-puff automatic smoking machine under the conditions of a flow rate of 55cc/2 seconds and a smoking interval of 30 seconds. At this time, the opening made in the cooling segment was set to be 25.5 mm from the end of the mouth end side of the region where the non-combustion heated tobacco and the electric heating device contact. The mainstream smoke generated in the smoking test was collected in a Cambridge pad, and after 12 puffing operations, the Cambridge pad was removed and extracted with 10 mL of ethanol, and the amount of each component in the mainstream smoke collected at each puffing operation was measured using GC-MS.
The amounts of menthol in the mainstream smoke obtained from the above measurements for the non-combustion heat-not-burn tobacco products in Examples 1 and 2 and Comparative Examples 1 and 2 are shown in FIG.

From the results in Figure 7, when flavoring (menthol) was added to the filter medium, the amount of flavoring (menthol) delivered was greater than when flavoring (menthol) was added to the tobacco filler, regardless of the position of the openings in the cooling segment. On the other hand, when comparing Example 1 and Example 2 in which menthol was added to the filter medium, it was found that the amount of menthol delivered differed depending on whether the openings were present in an area 4 mm or more away from the boundary between the cooling segment and the filter segment toward the cooling segment side, or whether they were present in an area less than 4 mm away. It was also found that the amount delivered was greater when the openings were present in an area 4 mm or more away.

The above experimental results show that the present invention makes it possible to provide non-combustion heated tobacco and electrically heated tobacco products in which the added flavoring is sufficiently delivered to the user.

Reference Signs List 10 Non-combustion heated tobacco 11 Tobacco rod portion 12 Cooling segment 13 Filter segment 14 Mouthpiece portion 15 Tip paper V Opening 20 Electrically heated device 21 Heater member 22 Battery unit 23 Control unit 24 Body 30 Electrically heated tobacco product

Claims (5)

A rod-shaped non-combustion heat-not-burn tobacco product comprising a tobacco rod portion and a mouthpiece portion,
the mouthpiece portion includes a cooling segment and a filter segment including a filter material, the tobacco rod portion and the cooling segment are adjacent to each other, and a flavoring is added to the filter material;
A non-combustion heated tobacco product, in which openings are provided concentrically in the circumferential direction of the cooling segment, and the openings are present in an area 4 mm or more and 7 mm or less in the direction of the cooling segment from the boundary between the cooling segment and the filter segment . The non-combustion heated tobacco according to claim 1 , wherein the filter segment comprises a center hole segment having one or more hollow portions and a filter medium. The non-combustion heat-not-burn tobacco according to claim 1 or 2 , wherein the amount of the flavoring added is 1 mg or more and 20 mg or less per non-combustion heat-not-burn tobacco. The non-combustion heating tobacco according to any one of claims 1 to 3 , wherein the flavoring is menthol. 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 product according to any one of claims 1 to 4 , which is inserted so as to come into contact with the heater member.

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