Flavor-generating article and flavor-generating system

Abstract

The present invention is a flavor-generating article that generates a flavor when heated by a heat-not-burn flavor inhaler, the flavor-generating article comprising: a first end inserted into the flavor inhaler; a second end opposite the first end; an upstream segment that includes one or more segments, the one or more segments each including a flavor source or filling material and an inner plug wrap wound around the flavor source or filling material; and an outer plug wrap that covers the inner plug wrap. At least one of the one or more segments satisfies the following formula (1).　Formula (1): Ti / Bi > To / Bo (where Ti is the thickness (μm) of the inner plug wrap, Bi is the basis weight (gsm) of the inner plug wrap, To is the thickness (μm) of the outer plug wrap, and Bo is the basis weight (gsm) of the outer plug wrap).

Description

Flavor generating article and flavor generating system

[0001] The present invention relates to flavor generating articles and flavor generating systems.

[0002] Non-combustion heating type flavor inhalers that generate aerosols or the like by heating a material containing a flavor source without burning the material are known. A flavor-generating article containing a material containing a flavor source is housed and heated in such flavor inhalers. The flavor-generating article includes a flavor-generating segment containing a flavor source, and heating the flavor-generating segment generates a flavor-containing aerosol. The flavor-generating article includes an upstream segment (a collective term for all segments located upstream from the downstream end of the flavor-generating segment) and a downstream segment (a collective term for all segments located downstream from the downstream end of the flavor-generating segment). The upstream segment includes the flavor-generating segment and may also include an optional first segment upstream of the flavor-generating segment. In the upstream segment of the flavor-generating article, a flavor source or a filler material is wrapped in an inner prag wrap, and the inner prag wrap is further covered by an outer prag wrap.

[0003] Patent Document 1 relates to a non-combustion heating type flavor inhalation article that includes a tobacco part having a tobacco filler and a wrapper surrounding the tobacco filler, and the wrapper has a diffusion coefficient of 0 cm / s or more, with the upper limit of the diffusion coefficient being between 0.022 cm / s and 0.10 cm / s.

[0004] International Publication No. 2020 / 230577

[0005] As described in Patent Document 1, in flavor-generating articles, components contained in a flavor source or the like may pass through the inner plug wrap and emerge on the surface of the outer plug wrap, causing stains (roll-up stains). To ensure the appearance quality of the product, it is necessary to prevent such stains from occurring. Furthermore, flavor-generating articles are inserted into the housing of a flavor inhaler for use, and are removed from the housing after use. Therefore, the flavor-generating article is also required to be easy to insert into or remove from the housing of the flavor inhaler.

[0006] In view of the above, one object of the present invention is to provide a flavor generating article and a flavor generating system that suppress the occurrence of roll-up stains and that are easy to insert into or remove from the storage section of a flavor inhaler.

[0007] As a result of intensive research aimed at solving the above-mentioned problems, the inventors have found that the above-mentioned problems can be solved by making the ratio of thickness to basis weight of the inner plug wrap greater than the ratio of thickness to basis weight of the outer plug wrap, and have thus completed the present invention. Specific aspects of the present invention are as follows.

[0008] [1] A flavor generating product that generates a flavor when heated by a non-combustion heating flavor inhaler, comprising: a first end inserted into the flavor inhaler; a second end opposite to the first end; an upstream segment including at least one segment, each of the at least one segment including a flavor source or a filler material and an inner plug wrap wrapping the flavor source or the filler material; and an outer plug wrap wrapping the inner plug wrap, wherein one or more of the at least one segment satisfies the following formula (1): Ti / Bi>To / Bo (1) (Ti: thickness (μm) of the inner plug wrap; Bi: basis weight (gsm) of the inner plug wrap; To: thickness (μm) of the outer plug wrap; and Bo: basis weight (gsm) of the outer plug wrap). [2] The flavor generating article according to [1], wherein the Ti / Bi is 1.01 to 1.65 μm / gsm. [3] The flavor generating article according to [1] or [2], wherein the To / Bo is 1.0 to 1.2 μm / gsm. [4] The flavor generating article according to any one of [1] to [3], wherein the Ti is 35.0 to 86.4 μm. [5] The flavor generating article according to any one of [1] to [4], wherein the Bi is 27.5 to 64.58 gsm. [6] The flavor generating article according to any one of [1] to [5], wherein the To is 35.0 to 44.5 μm. [7] The flavor generating article according to any one of [1] to [6], wherein the Bo is 34.1 to 42.8 gsm. [8] The flavor generating article according to any one of [1] to [7], further comprising a hollow tubular portion disposed on the second end side of the upstream segment and cooling the vapor or aerosol generated in the upstream segment. [9] The flavor generating article according to [8], wherein the outer plug wrap connects the upstream segment to the hollow tubular portion.

[10] The flavor generating article according to any one of [1] to [9], wherein the at least one segment includes a flavor generating segment and a first segment disposed on the first end side of the flavor generating segment.

[11] The flavor generating article according to

[10] , wherein the outer plug wrap connects the flavor generating segment to the first segment.

[12] The flavor generating article according to any one of [1] to

[11] , further comprising a second segment having a filter and arranged on the second end side of the upstream segment.

[13] The flavor generating article according to any one of [1] to

[12] , wherein the flavor generating article is a tobacco stick.

[14] A flavor generating system comprising the flavor generating article according to any one of [1] to

[13] , and a non-combustion heating type flavor inhaler.

[15] The flavor generating system according to

[14] , further comprising a heat source that generates heat when the flavor generating article is heated.

[16] The flavor generating system according to

[15] , wherein the flavor inhaler has a storage section in which the flavor generating article is stored, and the heat source is a heater that heats the flavor generating article stored in the storage section from outside the flavor generating article.

[0009] The flavor product of the present invention is capable of suppressing the occurrence of roll-up stains and is easy to insert into or remove from the housing of a flavor inhaler.

[0010] FIG. 1 is a perspective view showing a flavor generating system according to one embodiment; FIG. 2 is a perspective view showing a flavor inhaler according to one embodiment; FIG. 3 is a cross-sectional view showing the flavor inhaler taken along arrows 3-3 in FIG. 2; FIG. 4 is an exploded perspective view of a flavor generating article according to one embodiment; FIG. 5 is a schematic cross-sectional view of a flavor generating article according to one embodiment; FIG. 6 is an exploded perspective view of a flavor generating article according to another embodiment; FIG. 7 is an enlarged cross-sectional view showing an atomizing unit and a control unit when the flavor generating article is accommodated in a desired position in the flavor inhaler.

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings described below, the same or corresponding components are designated by the same reference numerals, and duplicate explanations will be omitted. In the following drawings, the dimensions of each part have been changed appropriately for easy understanding.

[0012] Fig. 1 is a perspective view showing a flavor generating system 1000 according to one embodiment of the present invention. Fig. 2 is a perspective view showing a flavor inhaler 200 according to one embodiment of the present invention. The flavor generating system 1000 is configured by applying a flavor generating article 100 to the flavor inhaler 200 having a heating source 40, which will be described later. At least a portion of the flavor generating article 100 is accommodated in the flavor inhaler 200 through an opening 210.

[0013] In the drawings described in this specification, an X-Y-Z Cartesian coordinate system may be used for convenience of explanation. In this coordinate system, the Z-axis faces vertically upward, the X-Y plane is positioned so as to cut the flavor inhaler 200 horizontally, and the Y-axis is positioned so as to extend from the front to the back of the flavor inhaler 200. The Z-axis direction can also be referred to as the insertion direction of the flavor generating article 100 housed in the chamber 50 described below. The X-axis direction can also be referred to as the longitudinal direction of the device in a plane perpendicular to the insertion direction of the flavor generating article 100. The Y-axis direction can also be referred to as the lateral direction of the device in a plane perpendicular to the insertion direction of the flavor generating article 100.

[0014] The flavor inhaler 200 is configured to generate aerosol containing a flavor by, for example, heating a stick-shaped flavor generating article 100 having a flavor source containing an aerosol source. The flavor generating article 100 is configured, for example, to include a smokable article containing a flavor source such as tobacco and an aerosol source at its tip end in the negative Z-axis direction, and to include a filter at another location. The flavor generating article 100 is configured to generate a flavor by being heated by the non-combustion heating type flavor inhaler 200.

[0015] In this embodiment, the flavor generating article 100 is described as having a stick shape, but the flavor generating article used in the flavor inhaler 200 is not limited to this. For example, the flavor generating article may be configured to include a cartridge containing a liquid aerosol source. The cartridge may also have a heater. The flavor generating article 100 may be a tobacco stick. This makes it possible to provide a tobacco smoking article that is easy for the user to carry.

[0016] 1 and 2, the flavor inhaler 200 has a housing 202 composed of an upper housing 204 and a lower housing 206, and a slide cover 208. The housing 202 constitutes the outermost housing of the flavor inhaler 200 and has a size that fits in a user's hand. When using the flavor inhaler 200, the user can hold the flavor inhaler 200 in their hand and inhale the aerosol.

[0017] In this example, the upper housing 204 of the housing 202 is made of a resin such as polycarbonate, and the lower housing 206 is made of a metal such as aluminum. However, the material of the housing 202 is not limited to these, and may be any suitable resin, particularly polycarbonate (PC), ABS (Acrylonitrile-Butadiene-Styrene) resin, PEEK (Polyether Ether Ketone), or a polymer alloy containing multiple types of polymers.

[0018] The upper housing 204 has an opening 210 for receiving the flavor-generating article 100, and the sliding cover 208 is slidably attached to the upper housing 204 to close the opening 210. Specifically, the sliding cover 208 is configured to be movable along the outer surface of the upper housing 204 between a closed position, at which the opening 210 of the upper housing 204 is closed, and an open position (the position shown in FIGS. 1 and 2 ), at which the opening 210 is open. For example, a user can manually operate the sliding cover 208 to move the sliding cover 208 between the closed position and the open position. In this way, the sliding cover 208 can allow or restrict access of the flavor-generating article 100 to the interior of the flavor inhaler 200.

[0019] In the flavor generating system 1000, air inhaled by a user is introduced into the flavor inhaler 200 through the opening 210, flows through the chamber 50 in the negative direction of the Z axis, and is supplied to the upstream end face of the flavor generating article 100. That is, the flavor generating system 1000 shown in Fig. 1 has a so-called counterflow type air flow path. Note that the air flow path is not limited to the counterflow type, and may have a so-called bottom flow type air flow path in which air is supplied from the bottom of the chamber 50 to the upstream end face of the flavor generating article 100.

[0020] 1 and 2 illustrate the housing 202 of the flavor inhaler 200 such that the joint surface between the upper housing 204 and the lower housing 206 intersects obliquely with the XY plane, but the configuration of the housing 202 is not limited to this. For example, the housing 202 may be configured from three or more members.

[0021] The flavor inhaler 200 may further have a terminal (not shown). The terminal may be an interface for connecting the flavor inhaler 200 to, for example, an external power source. If the power source of the flavor inhaler 200 is a rechargeable battery, connecting the external power source to the terminal allows current to flow from the external power source to the power source, thereby charging the power source. In addition, connecting a data transmission cable to the terminal may allow data related to the operation of the flavor inhaler 200 to be transmitted to an external device.

[0022] Next, the internal structure of the flavor inhaler 200 according to one embodiment of the present invention will be described. Figure 3 is a cross-sectional view showing the flavor inhaler 200 taken along the arrow 3-3 in Figure 2. As shown in Figure 3, the power supply unit 20, the atomization unit 30, and the control unit 80 are provided in the internal space of the housing 202 of the flavor inhaler 200.

[0023] The control unit 80 includes a substrate 81. The substrate 81 includes, for example, a microprocessor, and can control the supply of power from the power supply unit 20 to the atomization unit 30. This allows the control unit 80 to control the heating of the flavor-generating article 100 by the atomization unit 30. The control unit 80 also includes a Bluetooth (registered trademark) interface 82. The control unit 80 can communicate with external devices via the Bluetooth interface 82.

[0024] The power supply unit 20 has a power supply 21 electrically connected to a substrate 81 of the control unit 80. The power supply 21 may be, for example, a rechargeable battery or a non-rechargeable battery. The power supply 21 is electrically connected to the atomizing unit 30 via the substrate 81. This allows the power supply 21 to supply power to the atomizing unit 30 so as to appropriately heat the flavor-generating article 100.

[0025] The atomization unit 30 includes a chamber 50 extending in the longitudinal direction of the flavor generating article 100, a heat source 40 surrounding a portion of the chamber 50, a heat insulating unit 32, and a substantially cylindrical insertion guide member 34. The chamber 50 has a cylindrical shape that accommodates the flavor generating article 100. The chamber 50 may also have a so-called elliptical shape having a major axis and a minor axis in a cross section perpendicular to the longitudinal direction of the flavor inhaler 200. The chamber 50 is preferably formed from a heat-resistant material with a small coefficient of thermal expansion, and may be formed from, for example, a metal such as stainless steel, a resin such as PEEK, glass, ceramic, or the like.

[0026] The heat source 40 is configured to contact the outer peripheral surface of the chamber 50 and heat the flavor-generating article 100 housed in the chamber 50. The heat source 40 is a heating element that generates heat, i.e., its temperature increases, when powered by the power supply unit 20. The heat source 40 may be a sheet-like heater. The heat source 40 may be provided so as to contact the outer peripheral surface of the chamber 50, or may be provided on the inner surface of the chamber 50. Here, the longitudinal length of the heat source 40 is, for example, 10 mm. The heater constituting the heat source 40 is disposed outside the chamber 50, which functions as a housing for housing the flavor-generating article, and is configured to heat the flavor-generating article 100 housed in the chamber 50 from outside the flavor-generating article 100. Such a configuration for heating the flavor-generating article 100 from outside allows heat from the heater to be efficiently transferred to the flavor source 221 in the flavor-generating article 100 (high thermal conductivity).

[0027] The heat insulating section 32 is disposed to surround the chamber 50 and the heating source 40 and suppresses heat radiation to the outside of the chamber 50. The heat insulating section 32 may be made of, for example, aerogel. The insertion guide member 34 is formed of a resin material such as PEEK, PC, or ABS, and is provided between the sliding cover 208 in the closed position and the chamber 50. When the sliding cover 208 is in the open position, the insertion guide member 34 communicates with the outside of the flavor inhaler 200, and guides the insertion of the flavor generating article 100 into the chamber 50 by inserting the flavor generating article 100 into the insertion guide member 34.

[0028] FIG. 4 is an exploded perspective view of the flavor generating article 100. FIG. 5 is a schematic side cross-sectional view of the flavor generating article 100. As shown in FIGS. 4 and 5 , the flavor generating article 100 may include a flavor source 221 that generates a flavor and a tip plug 112 (corresponding to an example of an upstream portion) arranged upstream of the flavor source 221. More specifically, in the illustrated example, the flavor generating article 100 includes, in order from the tip side (i.e., the side opposite the mouthpiece), the tip plug 112, a flavor generating portion 220, a hollow tube portion 132, a hollow filter 240 (corresponding to an example of a second filter), and a filter plug 250 (corresponding to an example of a first filter). These five components are connected using an outer plug wrap 280, a second outer plug wrap 260, and tipping paper 270. Each configuration of flavor generating article 100 can be classified into an upstream segment (a collective term for all segments located upstream from the downstream end of flavor generating section 220) and a downstream segment (a collective term for all segments located downstream from the downstream end of flavor generating section 220). In the example of Figures 4 and 5, the upstream segment can include tip plug 112 and flavor generating section 220, and the downstream segment can include hollow tube section 132, hollow filter 240, and filter plug 250.

[0029] The airflow resistance in the longitudinal direction of each flavor-generating article 100, in other words, the airflow resistance over the entire length, is not particularly limited, but from the viewpoint of ease of smoking, it is preferable that the airflow resistance be 40 mmH ２ O or more 400mmH ２ It is preferable that the resistance is 0 or less. In this case, a comfortable inhalation resistance can be provided to the user. The airflow resistance is measured in accordance with the ISO standard method (ISO6565:2015) using, for example, a filter airflow resistance measuring device 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 / sec) 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 faces of the flavor-generating article 100. The unit is generally mmH. ２It is represented by O. It is known that the relationship between the airflow resistance and the length of a non-combustion heat-not-burn tobacco is proportional within the length range typically used (5 mm to 200 mm), and if the length is doubled, the airflow resistance of the non-combustion heat-not-burn tobacco doubles. From the same viewpoint as above, the airflow resistance when the ventilation hole vf is opened in the flavor-generating article 100 is 30 mmH ２ O or more 170mmH ２ It is preferably 0 or less.

[0030] The rod-shaped flavor generating article 100 preferably has a columnar shape that satisfies the requirement that the aspect ratio defined as follows be 1 or greater. Aspect ratio = h / w, where w is the width of the bottom surface of the columnar body (in this specification, this is the width of the bottom surface on the flavor generating section 220 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, or the like. The width w is the diameter if the bottom surface is circular, the major axis if the bottom surface is elliptical, or the diameter of the circumscribing circle or the major axis of the circumscribing ellipse if the bottom surface is polygonal or rounded polygonal.

[0031] The length h of the flavor-generating article 100 in the major axis direction is not particularly limited, and is, for example, typically 40 mm or more, preferably 45 mm or more, and more preferably 50 mm or more, and typically 100 mm or less, preferably 90 mm or less, and more preferably 80 mm or less.

[0032] The width w of the bottom surface of the columnar body of flavor-generating article 100 is not particularly limited, and is, for example, typically 5 mm or more, preferably 5.5 mm or more, and typically 10 mm or less, preferably 9 mm or less, and more preferably 8 mm or less.

[0033] The flavor generating unit 220 is disposed adjacent to and downstream of the tip plug 112. The flavor generating unit 220 includes a flavor source 221 and an inner plug wrap 222 around which the flavor source 221 is wrapped. The inner plug wrap 222 is not particularly limited and may be cigarette paper. The flavor source 221 is wrapped inside the inner plug wrap 222 to form the flavor generating unit 220. The flavor source 221 may include a tobacco filler. In addition, in this specification, dried tobacco products such as tobacco shreds, tobacco sheets, and tobacco granules, which will be described later, may be simply referred to as "dried tobacco leaves." The flavor generating unit 220 may also have a fitting portion for engaging with a heat source 40 for heating the tobacco product.

[0034] In the flavor-generating article of the present invention, the outer plug wrap 280 covers the inner plug wrap 222 in the flavor-generating section 220, and the following formula (1) can be satisfied: Ti / Bi > To / Bo (1) (Ti: thickness (μm) of the inner plug wrap 222; Bi: basis weight (gsm) of the inner plug wrap 222; To: thickness (μm) of the outer plug wrap 280; Bo: basis weight (gsm) of the outer plug wrap 280).

[0035] Furthermore, in the flavor-generating article of the present invention, the outer plug wrap 280 covers the first inner plug wrap 212 in the tip plug 112, and the following formula (1) can be satisfied: Ti / Bi > To / Bo (1) (Ti: thickness (μm) of the first inner plug wrap 212; Bi: basis weight (gsm) of the first inner plug wrap 212; To: thickness (μm) of the outer plug wrap 280; Bo: basis weight (gsm) of the outer plug wrap 280).

[0036] In the flavor-generating article of this embodiment, the inner plug wrap 222 and outer plug wrap 280 of the flavor-generating portion 220 may satisfy the above formula (1), the first inner plug wrap 212 and outer plug wrap 280 of the tip plug 112 may satisfy the above formula (1), or both of these may satisfy the above formula (1).

[0037] By satisfying the above formula (1), the flavor-generating article of the present invention suppresses the occurrence of roll-up stains and is easy to insert into or remove from the housing of a flavor inhaler. As described below, the tip plug 112 may contain an aerosol source, a flavoring, etc. Furthermore, components contained in the flavor source 221 may migrate to the tip plug 112 during storage of the flavor-generating article. Since roll-up stains may occur due to these aerosol sources, flavorings, migrated components, etc., it is desirable to suppress the occurrence of roll-up stains in the tip plug 112. In some cases, the flavor-generating article of this embodiment may exhibit effects such as high thermal conductivity and / or a glossy, luxurious appearance.

[0038] The smoothness of the front side of the outer plug wrap 280 (the side opposite the inner plug wrap, the outside) is not particularly limited, but is preferably 80 seconds or more. Having the smoothness within the above numerical range gives a glossy impression and a luxurious feel. The smoothness may be 80 to 135 seconds. The smoothness of the back side of the outer plug wrap 280 (the side facing the inner plug wrap, the inside) is not particularly limited, but may be 100 seconds or more, particularly 100 to 160 seconds. The smoothness of the outer plug wrap 280 can be measured based on the conditions and method described in the Examples section below.

[0039] The difference between Ti / Bi and To / Bo (Ti / Bi - To / Bo) is not particularly limited, but is preferably 0.01 to 0.65 μm / gsm, more preferably 0.1 to 0.65 μm / gsm, and most preferably 0.4 to 0.65 μm / gsm. When the difference between Ti / Bi and To / Bo is within the above numerical range, the bleeding of components derived from the flavor source, which causes staining, can be effectively suppressed.

[0040] The flavor generating section 220, which is formed by wrapping the flavor source 221 with the inner plug wrap 222, preferably has a columnar shape, and in this case, the aspect ratio, which is expressed as the height in the major axis direction of the flavor generating section 220 to the width of the bottom surface of the flavor generating section 220, is preferably 1 or greater. The shape of the bottom surface is not limited and may be polygonal, rounded polygonal, circular, elliptical, etc. The width of the bottom surface is the diameter if the bottom surface is circular, the major axis if the bottom surface is elliptical, and the diameter of the circumscribing circle or the major axis of the circumscribing ellipse if the bottom surface is polygonal or rounded polygonal.

[0041] The length of the flavor generating section 220 in the longitudinal direction can be changed as appropriate to suit the size of the product, but is usually 10 mm or more, preferably 12 mm or more, and is usually 70 mm or less, preferably 50 mm or less, more preferably 30 mm or less, even more preferably 25 mm or less, and even more preferably 20 mm or less.

[0042] Furthermore, the ratio of the length of the flavor generating section 220 to the overall length in the longitudinal direction of the flavor generating article 100 is not particularly limited, but from the viewpoint of the balance between the delivery amount and the aerosol temperature, it is usually 10% or more, preferably 20% or more, and 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.

[0043] The content of dried tobacco leaves in the flavor generating section 220 is not particularly limited, but may be 150 mg / rod part or more and 800 mg / rod part or less, and preferably 200 mg / rod part or more and 600 mg / rod part or less.

[0044] The tobacco filler described above may be comprised of tobacco shreds or a tobacco sheet, or may be comprised of both tobacco shreds and a tobacco sheet, filled into a filler (e.g., inner plug wrap 222).

[0045] The above-mentioned tobacco shreds are obtained by shredding aged tobacco leaves or the like to a predetermined size. The aged tobacco leaves used for shredding tobacco are not particularly limited, but examples thereof include those that have been deboned and separated into lamina and midrib. Another example of tobacco shreds is a tobacco sheet (described below) that has been shredded to a predetermined size (hereinafter also referred to as "tobacco sheet shreds"). Another example of tobacco shreds is a blend of tobacco shreds obtained by shredding aged tobacco leaves and tobacco sheet shreds.

[0046] The material for the tobacco shreds is not particularly limited, and known materials such as lamina or ribs can be used. Alternatively, the tobacco shreds may be produced by grinding dried tobacco leaves to an average particle size of 20 μm or more and 200 μm or less to produce tobacco pulverized material, homogenizing the material, processing it into a sheet, and then shredding the homogenized sheet. Furthermore, the tobacco shreds may be of the so-called strand type, in which a homogenized sheet having a length approximately equal to the longitudinal direction of the flavor generating section 220 is shredded approximately parallel to the longitudinal direction of the flavor generating section 220 and packed into the inner plug wrap 222. The width of the tobacco shreds is preferably 0.5 mm or more and 2.0 mm or less in order to be packed into the inner plug wrap 222.

[0047] Various types of tobacco can be used for the tobacco leaves used to prepare the shredded tobacco and homogenized sheets. Examples include flue-cured tobacco, burley, oriental tobacco, native tobacco, other Nicotiana tabacum varieties, Nicotiana rustica varieties, and mixtures thereof. Mixtures can be created by appropriately blending the above varieties to achieve the desired flavor. Details of the tobacco varieties are disclosed in the "Encyclopedia of Tobacco," published by the Tobacco Research Center on March 31, 2009. Several conventional methods are known for producing homogenized sheets, i.e., grinding tobacco leaves and processing them into homogenized sheets. The first method is to produce a paper-making sheet using a papermaking process. The second method involves mixing a suitable solvent, such as water, with ground tobacco leaves to homogenize them, then casting a thin layer of the homogenized mixture on a metal plate or metal belt and drying it to produce a cast sheet. The third method involves mixing a suitable solvent, such as water, with ground tobacco leaves to homogenize them, and extruding the mixture into a sheet to produce a rolled sheet. The types of the above-mentioned uniforming sheets are disclosed in detail in "Encyclopedia of Tobacco, Tobacco Research Center, March 31, 2009."

[0048] There are no particular limitations on the size of the tobacco shreds contained in the tobacco filler or the method for preparing them. For example, dried tobacco leaves shredded to a width of 0.5 mm to 2.0 mm may be used for the tobacco filler. Furthermore, when using a ground homogenized sheet, dried tobacco leaves may be ground to an average particle size of approximately 20 μm to 200 μm, homogenized, processed into a sheet, and then shredded to a width of 0.5 mm to 2.0 mm for use in the tobacco filler.

[0049] The tobacco sheet described above is obtained by forming a composition containing aged tobacco leaves and the like into a sheet shape. The aged tobacco leaves used for the tobacco sheet are not particularly limited, but examples thereof include those that have been deboned and separated into lamina and midrib. In addition, in this specification, the term "sheet" refers to a shape having a pair of approximately parallel main surfaces and side surfaces.

[0050] The number of tobacco sheets may be one or more. When the tobacco filler is composed of one tobacco sheet, for example, a tobacco sheet having one side of the same length as the longitudinal direction of the filler is folded multiple times along folds approximately parallel to the longitudinal direction of the filler (so-called gathered sheet). Another example of the above-mentioned embodiment is a tobacco sheet having one side of the same length as the longitudinal direction of the filler, wound around the longitudinal axis of the filler.

[0051] Tobacco sheets can be appropriately manufactured by known methods such as papermaking, slurrying, rolling, etc. The homogenized sheet described above for shredded tobacco can also be used. In the case of papermaking, tobacco sheets can be manufactured by a method including the following steps: 1) Dried tobacco leaves are roughly crushed, extracted with water, and separated into an aqueous extract and a residue. 2) The aqueous extract is concentrated by drying under reduced pressure. 3) Pulp is added to the residue, which is then fiberized in a refiner and then made into paper. 4) A concentrated aqueous extract is added to the paper-made sheet and dried to form a tobacco sheet. In this case, a step of removing some components such as nitrosamines may be added (see JP 2004-510422 A). In the case of the slurry method, tobacco sheets can be manufactured by a method including the following steps: 1) Water, pulp, and a binder are mixed with crushed tobacco leaves. 2) The mixture is thinly spread (cast) and dried. In this case, a step of removing some components such as nitrosamines may be added to a slurry containing a mixture of water, pulp, a binder, and crushed tobacco leaves by ultraviolet light or X-ray irradiation.

[0052] Alternatively, as described in WO 2014 / 104078, a nonwoven tobacco sheet can be used, which is produced by a method comprising the following steps: 1) mixing powdered tobacco leaves with a binder; 2) sandwiching the mixture between nonwoven fabrics; and 3) forming the layered product into a fixed shape by heat welding to obtain a nonwoven tobacco sheet. The raw tobacco leaves used in each of the above methods can be of the same type as those described above for shredded tobacco.

[0053] The composition of the tobacco sheet is not particularly limited, but for example, the content of tobacco raw material (tobacco leaves) is preferably 50% by weight or more and 95% by weight or less relative 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 binder is preferably 1% by weight or more and 10% by weight or less relative 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, multiple tobacco sheets are used, and these 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.

[0054] 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 view of the balance between heat transfer efficiency and strength. The thickness of each tobacco sheet may be the same or different.

[0055] The moisture content of the tobacco filler is, for example, 10% by weight to 15% by weight, and preferably 11% by weight to 13% by weight, based on the total weight of the tobacco filler. Such a moisture content suppresses the occurrence of stains on the roll and improves the suitability of the flavor generating section 220 for rolling during production.

[0056] The tobacco filler may contain an aerosol base for generating an aerosol. The type of aerosol base is not particularly limited, and extracts from various natural products and / or their constituent components can be selected depending on the application. Examples of aerosol bases include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.

[0057] The content of the aerosol base material in the tobacco filler is not particularly limited, but 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, of the total amount of the tobacco filler.

[0058] The tobacco filler may contain a flavoring. The type of the flavoring is not particularly limited, and examples of flavorings that can be used to impart a good flavor include acetanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise oil, apple juice, balsam of Peru 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-Methionine, methylparaben ... - Citronellol, clary sage extract, cocoa, coffee, konjac oil, coriander oil, cumin aldehyde, 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, lauryl methylpropional Ingredients: methicone, 4-hydroxy-4-(3-hydroxy-1-butenyl)-3,5,5-trimethyl-2-cyclohexen-1-one, 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, robertia jasmine Orris root oil, maltol, maple syrup, menthol, menthone, L-menthyl acetate, para-methoxybenzaldehyde, methyl 2-pyrrolyl ketone, methyl anthranilate, methyl phenylacetate, methyl salicylate, 4'-methylacetophenone, methylcyclopentenolone, 3-methylvaleric acid, mimosa absolute, honey, myristic acid, nerol, nerolidol, gamma-nonalactone, nutmeg oil, delta-octalactone, octanal, octanoic acid, orange flower oil, orange oil, orris root oil, palmitic acid, omega-pentadeca Calactone, peppermint oil, petitgrain Paraguay oil, phenethyl alcohol, phenethyl phenylacetate, phenylacetic acid, piperonal, plum extract, propenylguaethol, propyl acetate, 3-propylidenephthalide, prune juice, pyruvic acid, raisin extract, rose oil, rum, sage oil, sandalwood oil, spearmint oil, styrax absolute, marigold oil, tea distillate, α-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-1-cyclohexenyl)2-buten-4-one, 2,6,6-trimethyl-2-cyclohexene-1,4-dione, 4-(2,6,6-trimethyl-1,3-cyclo Examples of the fragrance include (hexadienyl)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), with menthol being particularly preferred. These fragrances may be used alone or in combination of two or more.

[0059] The content of the flavoring in the tobacco filler is not particularly limited, but from the viewpoint of imparting a good flavor, it is usually 10,000 ppm or more, preferably 20,000 ppm or more, more preferably 25,000 ppm or more, and is usually 70,000 ppm or less, preferably 50,000 ppm or less, more preferably 40,000 ppm or less, and even more preferably 33,000 ppm or less.

[0060] The packing density of the tobacco packing is not particularly limited, but is usually 250 mg / cm from the viewpoint of ensuring the performance of the flavor generating article 100 and imparting a good flavor. ３ or more, preferably 300 mg / cm ３ or more, and is usually 400 mg / cm ３ or less, preferably 350 mg / cm ３ The following is the result.

[0061] The flavor generating unit 220 may include dried tobacco leaves (dried tobacco leaves) and a flavor-containing material in which a flavor is encapsulated in a polysaccharide gel. The flavor-containing material is a material in which a flavor is encapsulated in a polysaccharide gel, and by incorporating the flavor-containing material into the flavor generating unit 220, variation in the amount of flavor delivered from puff to puff can be suppressed from the early to late stages of smoking, making it possible to continuously obtain a good flavor.

[0062] The content of the flavor-containing material in the flavor generating section 220 depends on the content of the flavor in the flavor-containing material, but is typically 1% by mass or more, preferably 5% by mass or more, and typically 20% by mass or less, preferably 10% by mass or less, relative to the dried tobacco leaf. The flavor generating section 220 also contains a flavor-containing material such that the content of the flavor contained in the flavor-containing material is typically 1 mg or more, preferably 5 mg or more, more preferably 10 mg or more, and typically 30 mg or more, preferably 20 mg or less. By setting the content of the flavor-containing material in the flavor generating section 220 within the above range, it is possible not only to impart a good flavor note, but also to suppress variation in the amount of flavor delivered from the early to late stages of smoking, and to ensure a sufficient delivery amount in all of the early, middle, and late stages of smoking.

[0063] The manner in which the flavor-containing material is blended into the flavor generating section 220 is not particularly limited, and the flavor-containing material may be disposed inside and / or outside the inner plug wrap 222 that wraps the flavor source 221, the inner plug wrap 222 may be impregnated with the flavor-containing material, or the flavor-containing material may be blended into the tobacco filler. When the flavor-containing material is disposed inside and / or outside the inner plug wrap 222 that wraps the flavor source 221, the emulsion slurry may be applied to the inner plug wrap 222, or the emulsion slurry may be sequentially cast onto a substrate and dried to form a flavor-containing sheet, and the flavor source 221 and the inner plug wrap 222 may be wrapped around the flavor-containing material. The inner plug wrap 222 impregnated with the flavor-containing material can be produced by impregnating the inner plug wrap 222 with the emulsion slurry and drying it. Furthermore, when a flavor-containing material is incorporated into a tobacco filler, the emulsion slurry may be applied to or impregnated into dried tobacco leaves, or the flavor-containing sheet or its shredded or pulverized form may be mixed with dried tobacco.

[0064] 4 and 5 , the flavor source 221 may be block-shaped or may be cylindrical, for example. When the flavor source 221 is cylindrical, a gap may be formed inside the flavor source 221, extending in a direction in which the flavor source 221 and the tip plug 112 are adjacent to each other. In this case, the flavor source 221 is located outside the flavor-generating article 100, and the gap is located inside the flavor source 221. Therefore, when the flavor-generating article 100 is heated from the outside in the flavor inhaler 200, the flavor source 221 can be efficiently heated. Furthermore, when using a flavor inhaler 200 that heats the flavor-generating article 100 from the outside, the flavor source 221 is not located inside the flavor-generating article 100, which is a position where heat is not easily transferred and where it is unlikely to contribute to the generation of vapor or aerosol. Therefore, the amount of the flavor source 221 can be saved while suppressing a decrease in the amount of vapor or aerosol. The cylindrical flavor source 221 may be formed, for example, by rolling a sheet-like flavor source 221 into a cylindrical shape.

[0065] The configuration of the inner plug wrap 222 used in the flavor-generating article 100 is not particularly limited and can be any common configuration. Specifically, for example, the inner plug wrap can be primarily made of pulp. Pulp can be wood pulp, such as softwood pulp or hardwood pulp, flax pulp, hemp pulp, sisal pulp, or esparto, which are commonly used for inner plug wrap (e.g., cigarette paper) for tobacco products. The inner plug wrap can be obtained by papermaking one or more of these pulps. These pulps can be used alone or in any combination of multiple types in any ratio. Examples of pulp that can be used include chemical pulp, ground pulp, chemi-ground pulp, and thermomechanical pulp, which are obtained by kraft cooking, acidic, neutral, or alkaline sulfite cooking, and soda cooking.

[0066] The pulp can be used to produce inner plug wrap by adjusting and uniforming the texture during papermaking using a Fourdrinier paper machine, a cylinder paper machine, or a combined cylinder / short-cylinder paper machine. If necessary, a wet strength agent can be added to impart water resistance to the inner plug wrap, or a sizing agent can be added to adjust the printing quality of the inner plug wrap. Furthermore, internal papermaking aids and papermaking additives can be added to the inner plug wrap. Internal papermaking aids can include, for example, aluminum sulfate, various anionic, cationic, nonionic, or amphoteric retention aids, drainage aids, and paper strength agents. Papermaking additives can include, for example, dyes, pH adjusters, antifoaming agents, pitch control agents, slime control agents, and the like.

[0067] The (base paper) basis weight (Bi) of the inner plug wrap 222 or the first inner plug wrap 212 is, for example, 20 gsm or more, preferably 30 gsm or more, and more preferably 35 gsm or more. On the other hand, the basis weight is, for example, 70 gsm or less, preferably 50 gsm or less, and more preferably 45 gsm or less. The basis weight may be 27.5 to 64.58 gsm. The above numerical ranges can be arbitrarily combined. Having the basis weight within the above numerical range provides the effects of sufficient strength, sufficient winding suitability (easy winding), and / or high opacity. The thickness (Ti) of the inner plug wrap 222 or the first inner plug wrap 212 is not particularly limited, and is preferably 30 μm or more, more preferably 40 μm or more, from the viewpoints of rigidity, breathability, and ease of adjustment during papermaking. It is also, for example, 100 μm or less, preferably 75 μm or less, and more preferably 60 μm or less. The thickness may be 35.0 to 86.4 μm. The above numerical ranges can be combined in any manner.

[0068] The ratio of the thickness (Ti) (μm) of the inner plug wrap 222 to the basis weight (Bi) (gsm) of the inner plug wrap 222 or the ratio (Ti / Bi) of the thickness (Ti) (μm) of the first inner plug wrap 212 to the basis weight (Bi) (gsm) of the first inner plug wrap 212 is not particularly limited, but is preferably 1.01 to 1.65 μm / gsm, more preferably 1.10 to 1.48 μm / gsm, and most preferably 1.31 to 1.43 μm / gsm. Having Ti / Bi within the above range reduces chipping during the winding process.

[0069] The inner plug wrap of flavor generating article 100 may have a square or rectangular shape. In the case of inner plug wrap 222 for wrapping flavor source 221 (for producing flavor generating section 220), the length of one side of inner plug wrap 222 may be approximately 12 mm to 70 mm, and the length of the other side (the side connected to the above-mentioned side) may be 15 mm to 28 mm, preferably 22 mm to 24 mm, and more preferably approximately 23 mm.

[0070] When the flavor source 221 is wrapped in the inner plug wrap 222 in a cylindrical shape, for example, one end of the inner plug wrap 222 in the width direction and the other end on the opposite side may be overlapped by about 2 mm and glued together. This gives the inner plug wrap 222 a cylindrical cardboard tube shape, into which the flavor source 221 is filled. The size of the rectangular inner plug wrap 222 can be determined depending on the size of the flavor generating section 220. In the case of an inner plug wrap that connects and wraps the flavor generating section 220 and other components adjacent to the flavor generating section 220, the length of one side may be 20 mm to 60 mm, and the length of the other side (the side connected to the above side) may be 15 mm to 28 mm.

[0071] In addition to the pulp, the inner plug wrap may contain a filler. The filler content may be from 10% by weight to less than 60% by weight, and preferably from 15% by weight to 45% by weight, based on the total weight of the inner plug wrap. When the basis weight of the inner plug wrap is from 35 gsm to 50 gsm, the filler content is preferably from 15% by weight to 45% by weight. Furthermore, when the basis weight of the inner plug wrap is more than 35 gsm to 50 gsm, the filler content is preferably from 25% by weight to 45% by weight. As the filler, calcium carbonate, titanium dioxide, kaolin, etc. can be used, but calcium carbonate is preferably used from the viewpoint of enhancing flavor and whiteness, etc.

[0072] Various auxiliary agents other than base paper and fillers may be added to the inner plug wrap. For example, a water resistance improver can be added to the inner plug wrap to improve water resistance. The water resistance improver may include a wet strength agent (WS agent) and a sizing agent. Examples of the wet strength agent include urea-formaldehyde resin, melamine-formaldehyde resin, and polyamide epichlorohydrin (PAE). Examples of the sizing agent 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 paper strength agent may be added to the inner plug wrap as an auxiliary agent. Examples of the paper strength agent include polyacrylamide, cationic starch, oxidized starch, CMC, polyamide epichlorohydrin resin, and polyvinyl alcohol. In particular, it is known that the use of a very small amount of oxidized starch as an auxiliary agent in the inner plug wrap improves breathability (see, for example, JP 2017-218699 A).

[0073] A coating agent may be added to at least one of the front and back surfaces of the inner plug wrap. While there are no particular limitations on the coating agent, a coating agent that can form a film on the surface of the paper and reduce liquid permeability is preferred. Examples of coating agents 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).

[0074] 4 and 5 , the tip plug 112 is located at the tip of the flavor generating article 100 and is configured to cover the end of the flavor source 221. This prevents the flavor source 221 from falling out of the flavor generating article 100. Specifically, the tip plug 112 includes a first filler material 211 and a first inner plug wrap 212 that wraps around the first filler material 211. The tip plug 112 may further include an aerosol source, a flavoring, etc., carried by the first filler material 211. In the flavor generating article of this embodiment, the first segment 11 (tip plug 112) is an optional segment.

[0075] The material of the first inner plug wrap 212 is not particularly limited, and any known material can be used. The first inner plug wrap 212 may contain a filler such as calcium carbonate. The first inner plug wrap 212 may be coated or uncoated, but is preferably coated with a desired material from the viewpoint of imparting functions other than strength and structural rigidity.

[0076] 4, the flavor-generating article 100 preferably has a downstream section 130 arranged downstream of the flavor source 221. In this case, the downstream section 130 can cool and filter the vapor or aerosol generated in the flavor source 221. Specifically, the downstream section 130 preferably includes a filter plug 250. This allows the filter plug 250 to cool and filter the vapor or aerosol generated in the flavor source.

[0077] The filter plug 250 is located at the end of the flavor-generating article 100 on the mouthpiece side. The filter plug 250 includes a second filler material 251 and a second inner plug wrap 252 around which the second filler material 251 is wound. The filter material used in the second filler material 251 is not particularly limited as long as it has a general filter function. Typical filter functions include, for example, adjusting the amount of air mixed in when inhaling aerosols, reducing flavors, and reducing nicotine and tar. However, the filter material used in the second filler material 251 does not need to have all of these functions. Furthermore, in electrically heated tobacco products, which tend to produce fewer components and have a lower tobacco filler filling rate than cigarette products, one important function is to suppress filtering while preventing the tobacco filler from falling out.

[0078] The cross section of the filter plug 250 perpendicular to the longitudinal direction is substantially circular. The diameter of the circle can be varied depending on the size of the product, but is typically 4.0 mm to 9.0 mm, preferably 4.5 mm to 8.5 mm, and more preferably 5.0 mm to 8.0 mm. If the cross section of the filter plug 250 is not circular, the diameter refers to the diameter of a circle having the same area as the cross section.

[0079] The circumferential length of the filter plug 250 in a cross section perpendicular to the longitudinal direction can be changed as appropriate to suit the size of the product, but is typically 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.

[0080] The longitudinal length of the filter plug 250 can be changed as needed to suit the size of the product, but is typically 15 mm to 35 mm, preferably 17.5 mm to 32.5 mm, and more preferably 20.0 mm to 30.0 mm. The shape and dimensions of the filter medium used in the second filler 251 can be adjusted as needed so that the shape and dimensions of the filter plug 250 fall within the above ranges.

[0081] The filter medium constituting the second filler 251 of the filter plug 250 may be, for example, one manufactured by the manufacturing method described below, or a commercially available product. The form of the filter plug 250 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.

[0082] The filter plug 250 can be manufactured by a known method. For example, when synthetic fibers such as cellulose acetate tow are used as the material for the second filler 251, the filter plug 250 can be manufactured by spinning a polymer solution containing a polymer and a solvent and then crimping the resulting polymer. For example, the method described in International Publication No. 2013 / 067511 can be used as this method. In manufacturing the filter plug 250, the airflow resistance and the additives to be added to the second filler 251 (such as known adsorbents, flavors (e.g., menthol), granular activated carbon, and flavor-retaining materials) can be appropriately designed.

[0083] The second filler 251 constituting the filter plug 250 is not particularly limited, and known forms may be employed. For example, cellulose acetate tow processed into a cylindrical shape can be used as the second filler 251. The single-filament fineness and total fineness of the cellulose acetate tow are not particularly limited. However, for a filter plug 250 with a circumference of 22 mm, the single-filament fineness is preferably 5 g / 9000 m to 12 g / 9000 m, and the total fineness is preferably 12,000 g / 9000 m to 35,000 g / 9000 m. Examples of cross-sectional shapes of the cellulose acetate tow fibers include circular, elliptical, Y-shaped, I-shaped, and R-shaped. In a filter filled with cellulose acetate tow, triacetin may be added in an amount of 5 wt % to 10 wt % based on the weight of the cellulose acetate tow to improve filter hardness. Moreover, instead of the acetate filter, a paper filter filled with sheet-shaped pulp paper may be used.

[0084] The density of the second filler 251 is not particularly limited, but is usually 0.10 g / cm ３ 0.25g / cm or more ３ or less, and 0.11 g / cm３ 0.24g / cm or more ３ It is preferable that the density is 0.12 g / cm or less. ３ 0.23g / cm or more ３ More preferably, it is:

[0085] To improve strength and structural rigidity, the filter plug 250 may include a second inner plug wrap 252 (wrap) around which the second filler 251 (described below) is wrapped. The second inner plug wrap 252 may include one or more rows of adhesive-containing seams. The adhesive may include, but is not limited to, a vinyl acetate adhesive or a hot melt adhesive, and the hot melt adhesive may include polyvinyl alcohol. When the filter segment is made up of two or more segments, the second inner plug wrap 252 is preferably wound around these two or more segments.

[0086] The material of the second inner plug wrap 252 is not particularly limited, and known materials can be used. The material may contain a filler such as calcium carbonate. The thickness of the second inner plug wrap 252 is not particularly limited, and is typically 20 μm to 140 μm, preferably 30 μm to 130 μm, and more preferably 30 μm to 120 μm. The basis weight of the second inner plug wrap 252 is not particularly limited, and is typically 20 gsm to 100 gsm, preferably 22 gsm to 95 gsm, and more preferably 23 gsm to 90 gsm. The second inner plug wrap 252 may be coated or uncoated, but is preferably coated with a desired material to provide functions other than strength and structural rigidity.

[0087] 4 and 5, the hollow filter 240 and the filter plug 250 may be connected by, for example, a second outer plug wrap 260 (outer wrapping paper). The second outer plug wrap 260 may be, for example, a cylindrical piece of paper.

[0088] The second filler material 251 may include a crushable additive release container (e.g., a capsule) including a crushable outer shell such as gelatin. The form of the capsule (also referred to in the art as an "additive release container") is not particularly limited, and any known form may be employed. For example, a crushable additive release container including a crushable outer shell such as gelatin may be employed. 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 within the capsule, which is then transmitted to tobacco smoke while the tobacco product is being used, and to the surrounding environment after use.

[0089] The capsule form is not particularly limited, and may be, for example, a frangible capsule, preferably spherical in shape. The additive contained in the capsule may include any of the additives described above, and preferably includes flavorings and activated carbon. One or more materials that aid in filtering smoke may also be added as additives. The form of the additive is not particularly limited, and is typically liquid or solid. The use of capsules containing additives is well known in the art. Frangible capsules and methods for their manufacture are well known in the art. The flavoring may be, for example, menthol, spearmint, peppermint, fenugreek, clove, medium-chain triglycerides (MCT), or the like. The flavoring may be menthol, or a combination thereof.

[0090] In this embodiment, a flavoring may be added to the second filler material 251. By adding a flavoring to the second filler material 251, the amount of flavoring delivered during use is increased compared to conventional techniques in which flavoring is added to the tobacco filler that constitutes the tobacco rod. The degree of increase in the amount of flavoring delivered is further increased depending on the position of the ventilation holes provided in the hollow tube portion 132, which will be described later. The method of adding a flavoring to the second filler material 251 is not particularly limited, and it only needs to be added so that the flavoring is substantially uniformly dispersed in the second filler material 251 to which the flavoring is to be added. The amount of flavoring added to the second filler material 251 may be 10 to 100 volume % of the second filler material 251. The flavoring may be added to the second filler material 251 in advance before the filter segment is constructed, or after the filter cigarette is constructed.

[0091] The type of the fragrance is not particularly limited, and examples of fragrances that can be used from the viewpoint of imparting a good flavor include 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-Methionine, methylparaben ... - Citronellol, clary sage extract, cocoa, coffee, konjac oil, coriander oil, cumin aldehyde, 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, lauryl methylpropional Ingredients: methicone, 4-hydroxy-4-(3-hydroxy-1-butenyl)-3,5,5-trimethyl-2-cyclohexen-1-one, 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, robertia jasmine Orris root oil, maltol, maple syrup, menthol, menthone, L-menthyl acetate, para-methoxybenzaldehyde, methyl 2-pyrrolyl ketone, methyl anthranilate, methyl phenylacetate, methyl salicylate, 4'-methylacetophenone, methylcyclopentenolone, 3-methylvaleric acid, mimosa absolute, honey, myristic acid, nerol, nerolidol, gamma-nonalactone, nutmeg oil, delta-octalactone, octanal, octanoic acid, orange flower oil, orange oil, orris root oil, palmitic acid, omega-pentadeca Calactone, peppermint oil, petitgrain Paraguay oil, phenethyl alcohol, phenethyl phenylacetate, phenylacetic acid, piperonal, plum extract, propenylguaethol, propyl acetate, 3-propylidenephthalide, prune juice, pyruvic acid, raisin extract, rose oil, rum, sage oil, sandalwood oil, spearmint oil, styrax absolute, marigold oil, tea distillate, α-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-1-cyclohexenyl)2-buten-4-one, 2,6,6-trimethyl-2-cyclohexene-1,4-dione, 4-(2,6,6-trimethyl-1,3-cyclo Examples of the fragrance include (hexadienyl)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), with menthol being particularly preferred. These fragrances may be used alone or in combination of two or more.

[0092] The filter plug 250 of this embodiment includes a second filler 251, and activated carbon may be added to at least a portion of the second filler 251. The amount of activated carbon added is 15.0 m2 per flavor-generating article 100, calculated as the specific surface area of ​​activated carbon × weight of activated carbon / cross-sectional area of ​​the second filler 251 in the direction perpendicular to the air flow direction. ２ / cm ２ Over 80.0m ２ / cm ２ or less. For convenience, the above-mentioned "specific surface area of ​​activated carbon × weight of activated carbon / cross-sectional area of ​​second filler 251 perpendicular to the airflow direction" may be expressed as "surface area of ​​activated carbon per unit cross-sectional area." This surface area of ​​activated carbon per unit cross-sectional area can be calculated based on the specific surface area of ​​activated carbon added to the second filler 251 of one flavor-generating article 100, the weight of the added activated carbon, and the cross-sectional area of ​​the second filler 251. Note that activated carbon may not be uniformly dispersed in the filter medium to which it is added, and therefore it is not required that the above range be satisfied in all cross-sections (cross-sections perpendicular to the airflow direction) of the filter medium.

[0093] In this embodiment, by having the surface area of ​​activated carbon per unit cross-sectional area within the above range, the components generated by heating can be delivered to the user in the desired amount, and the user can be given the desired flavor sensation. If the surface area of ​​activated carbon per unit cross-sectional area is smaller than the lower limit of the above range, the effect of adding activated carbon cannot be fully obtained. On the other hand, if the surface area of ​​activated carbon per unit cross-sectional area is larger than the upper limit of the above range, the components generated by heating will be reduced more than necessary. The surface area of ​​activated carbon per unit cross-sectional area is 17.0 m ２ / cm ２ More preferably, it is 35.0 m or more. ２ / cm ２ It is more preferable that the distance is 77.0 m or more. ２ / cm ２ More preferably, it is 73.0 m or less. ２ / cm ２ It is even more preferable that:

[0094] The surface area of ​​the activated carbon per unit cross-sectional area can be adjusted, for example, by adjusting the specific surface area of ​​the activated carbon, the amount of activated carbon added, and the cross-sectional area perpendicular to the airflow direction of the second filler 251. The calculation of the surface area of ​​the activated carbon per unit cross-sectional area is based on the filter medium to which activated carbon is added. If the filter plug 250 is composed of multiple filter mediums, the cross-sectional area and length of only the filter medium to which activated carbon is added are used as the basis.

[0095] Examples of activated carbon that can be used in this embodiment include those made from raw materials such as wood, bamboo, coconut shells, walnut shells, and coal. Also, examples of activated carbon that can be used in this embodiment include activated carbon with a BET specific surface area of ​​1100 m or more. ２ / g or more 1600m ３ / g or less, and preferably 1200m ３ / g or more 1500m ３ / g or less, and more preferably 1250m ３ / g or more 1380m ３The BET specific surface area can be determined by a nitrogen gas adsorption method (BET multipoint method).

[0096] The activated carbon usable in this embodiment may have a pore volume of 400 μL / g or more and 800 μL / g or less, more preferably 500 μL / g or more and 750 μL / g or less, and even more preferably 600 μL / g or more and 700 μL / g or less. The pore volume can be calculated from the maximum adsorption amount obtained using a nitrogen gas adsorption method.

[0097] In this embodiment, the amount of activated carbon added to the second filler 251 per unit length in the air passage direction is preferably 5 mg / cm to 50 mg / cm, more preferably 8 mg / cm to 40 mg / cm, and even more preferably 10 mg / cm to 35 mg / cm. In this embodiment, by setting the specific surface area of ​​the activated carbon and the amount of activated carbon added within the above ranges, the surface area of ​​the activated carbon per unit cross-sectional area can be adjusted as desired.

[0098] Furthermore, the activated carbon that can be used in this embodiment preferably has a cumulative 10% by volume particle diameter (particle diameter D10) of 250 μm or more and 1200 μm or less. Furthermore, the cumulative 50% by volume particle diameter (particle diameter D50) of the activated carbon particles is preferably 350 μm or more and 1500 μm or less. D10 and D50 are measured by a laser diffraction scattering method. An example of a suitable device for this measurement is the HORIBA Laser Diffraction / Scattering Particle Size Distribution Analyzer "LA-950." Powder is poured into the cell of this device together with pure water, and the particle diameter is detected based on the light scattering information of the particles. The measurement conditions for this device are as follows: Measurement mode: Manual flow-moh cell measurement Dispersion medium: Ion-exchanged water Dispersion method: Measurement after 1 minute of ultrasonic irradiation Refractive index: 1.92-0.00i (sample refractive index) / 1.33-0.00i (dispersion medium refractive index) Number of measurements: Measurements were performed twice with different samples

[0099] In this embodiment, the method of adding activated carbon to the second filler 251 is not particularly limited, and the activated carbon may be added so as to be dispersed substantially uniformly in the second filler 251 to which the activated carbon is added.

[0100] The filter plug 250 may be, for example, a commercially available product. The form of the filter plug 250 is not particularly limited and may be a filter including a single filter segment, or a multi-segment filter including multiple filter segments, such as a dual filter or triple filter. When the filter plug 250 is composed of a single filter segment, the second filler 251 to which activated carbon is added directly constitutes the filter plug 250. On the other hand, when the filter plug 250 is composed of multiple filter segments, the second filler 251, which is made of a filter medium to which activated carbon is added, is preferably positioned upstream of the filter medium constituting the mouth end. Alternatively, activated carbon may be added to the filter medium constituting the mouth end. When the filter segment is a multi-segment filter, the length of the filter segment used as the basis for the amount of activated carbon added is the length of the filter medium to which activated carbon is added. The amount of activated carbon added is, for example, 4.0 mg to 24.0 mg, preferably 4.5 mg to 23.0 mg, and more preferably 10.5 mg to 22.0 mg, in terms of weight relative to the entire filter segment.

[0101] The downstream section 130 may further include a hollow tube section 132 and a hollow filter 240. The hollow filter 240 is disposed adjacent to and downstream of the hollow tube section 132. The hollow filter 240 includes a filter medium 241 and a third inner plug wrap 242 around which the filter medium 241 is wound. The third inner plug wrap 242 may be the same as the plug wrap used in cigarettes. The third inner plug wrap 242 may be omitted. The hollow filter 240 may also be omitted.

[0102] The hollow filter 240 may include a filter medium 241 having one or more hollow portions and a third inner plug wrap 242 covering the filter medium 241. The hollow filter 240 functions to increase the strength of the downstream section 130. The filter medium 241 may be, for example, a rod with an inner diameter of 1.0 mm to 5.0 mm, densely packed with cellulose acetate fibers and hardened with a triacetin-containing plasticizer added at 6% to 20% by mass relative to the mass of the cellulose acetate. Because the filter medium 241 has a high fiber packing density, during inhalation, air and aerosols flow only through the hollow portions, with almost no flow within the filter medium 241. Because the filter medium 241 inside the hollow filter 240 is a fiber-packed layer, the feel from the outside during use is less likely to cause discomfort to the user.

[0103] The hollow filter 240 may include a third inner plug wrap 242 (wrap) around which the filter medium 241 is wrapped to improve strength and structural rigidity. The third inner plug wrap 242 may include one or more rows of adhesive seams. The type of adhesive is not particularly limited, but may include a vinyl acetate adhesive or a hot melt adhesive. The hot melt adhesive may include polyvinyl alcohol. Furthermore, when the hollow filter 240 is composed of two or more segments, the third inner plug wrap 242 is preferably wound around these two or more segments.

[0104] The material of the third inner plug wrap 242 is not particularly limited, and known materials can be used. The material may contain a filler such as calcium carbonate. The thickness of the third inner plug wrap 242 is not particularly limited, and is typically 20 μm to 140 μm, preferably 30 μm to 130 μm, and more preferably 30 μm to 120 μm. The basis weight of the third inner plug wrap 242 is not particularly limited, and is typically 20 gsm to 100 gsm, preferably 22 gsm to 95 gsm, and more preferably 23 gsm to 90 gsm. The third inner plug wrap 242 may be coated or uncoated, but is preferably coated with a desired material to provide functions other than strength and structural rigidity.

[0105] The hollow tube portion 132 is sandwiched adjacent to the flavor generating portion 220 and the hollow filter 240 or the filter plug 250 (if the hollow filter 240 is not present), and is typically a rod-shaped member having a cavity in a circumferential cross section of a cylinder or the like that is hollow (hollow). The longitudinal length of the hollow tube portion 132 can be appropriately changed according to the size of the product, but is typically 15 mm or more, preferably 20 mm or more, and typically 40 mm or less, preferably 35 mm or less, and more preferably 30 mm or less. By setting the longitudinal length of the hollow tube portion 132 at or above the lower limit, a sufficient cooling effect can be ensured to obtain a good flavor, while by setting it at or below the upper limit, loss due to adhesion of the generated steam and aerosol to the inner wall of the hollow tube portion 132 can be suppressed.

[0106] When a cooling sheet (e.g., a polylactic acid sheet packed in a gathered state) is filled into the hollow tube portion 132, the total surface area of ​​the hollow tube portion 132 is not particularly limited, and may be, for example, 300 mm ２ / mm or more 1000mm ２ This surface area is the surface area per length (mm) of the hollow tube portion 132 in the air flow direction. The total surface area of ​​the hollow tube portion 132 is 400 mm ２ / mm or more, and ２ / mm or more is more preferable, while 600 mm ２ / mm or less, and ２ / mm or less is more preferable.

[0107] It is desirable for hollow tube 132 to have an internal structure with a large total surface area. Thus, in a preferred embodiment, hollow tube 132 may be formed from a thin sheet of material that is wrinkled to form channels, and then pleated, gathered, and folded. The more folds or pleats there are in hollow tube 132, the greater the total surface area of ​​hollow tube 132. The thickness of the material from which hollow tube 132 is made is not particularly limited and may be, for example, from 5 μm to 500 μm, or from 10 μm to 250 μm.

[0108] As shown in Figures 4 and 5, the hollow tube portion 132 may be provided with circumferential and concentric air vents (vf) (also referred to in the art as ventilation filters). The presence of the air vents (vf) allows air to flow into the hollow tube portion 132 from the outside during use, lowering the temperature of the components and air flowing in from the flavor generating section 220. The air vents (vf) may be provided in an area 4 mm or more toward the hollow tube portion 132 from the boundary between the hollow tube portion 132 and the hollow filter 240 or the filter plug 250 (if the hollow filter 240 is not present). In this case, the air vents (vf) not only improve the cooling capacity of the hollow tube portion 132 but also suppress the retention of components generated by heating within the hollow tube portion 132, thereby improving the delivery amount of the components. In addition, when an aerosol base material is used in the flavor generating section 220, the vapor containing the aerosol base material and tobacco flavor components generated when the flavor generating article 100 is heated comes into contact with air from the outside, lowers in temperature, and liquefies, thereby facilitating the generation of the aerosol.

[0109] Furthermore, when the concentrically arranged ventilation holes vf are considered to be one hole group, the hole group may be one or two or more. When there are two or more hole groups, from the viewpoint of improving the delivery amount of components generated by heating, it is preferable that no hole group be provided in an area less than 4 mm toward the hollow tube portion 132 from the boundary between the hollow tube portion 132 and the hollow filter 240 or the filter plug 250 (when the hollow filter 240 is not present).

[0110] Furthermore, when the hollow tube portion 132 is wrapped with tipping paper 270, it is preferable that the tipping paper 270 has an opening formed in a position directly above the ventilation hole vf formed in the hollow tube portion 132. When producing such a flavor-generating article 100, it is possible to prepare and wrap tipping paper 270 having an opening that overlaps with the ventilation hole vf, but from the viewpoint of ease of production, it is preferable to produce the flavor-generating article 100 using a hollow tube portion 132 that does not have the ventilation hole vf, and then drill a hole that passes through the hollow tube portion 132 and the tipping paper 270 simultaneously.

[0111] From the viewpoint of improving the delivery of components generated by heating, the region where the vent holes vf are present is preferably a region of 4.5 mm or more, more preferably a region of 5 mm or more, and even more preferably a region of 5.5 mm or more from the boundary between the hollow tube portion 132 and the hollow filter 240 or filter plug 250 (when the hollow filter 240 is not present), toward the hollow tube portion 132. Furthermore, from the viewpoint of ensuring cooling function, the region where the vent holes vf are present is preferably a region of 15 mm or less, more preferably a region of 10 mm or less, and even more preferably a region of 7 mm or less from the boundary, toward the hollow tube portion 132.

[0112] From the viewpoint of improving the delivery of components generated by heating, the region where the air vent vf is present is preferably a region of 24 mm or more, preferably a region of 24.5 mm or more, preferably a region of 25 mm or more, and more preferably a region of 25.5 mm or more, from the mouth end (second end 102) of flavor generating article 100 toward hollow tube portion 132. Furthermore, from the viewpoint of ensuring cooling function, the region where the air vent vf is present is preferably a region of 35 mm or less, more preferably a region of 30 mm or less, and even more preferably a region of 27 mm or less, from the mouth end of flavor generating article 100 toward hollow tube portion 132.

[0113] Furthermore, when the axial length of the hollow tube portion 132 is 20 mm or more, the region where the air vents vf are present is preferably a region of 5 mm or more, more preferably a region of 10 mm or more, and even more preferably a region of 13 mm or more, from the viewpoint of ensuring cooling function, from the boundary between the hollow tube portion 132 and the flavor generating portion 220 toward the hollow tube portion 132. Furthermore, when the axial length of the hollow tube portion 132 is 20 mm or more, the region where the air vents vf are present is preferably a region of 16 mm or less, more preferably a region of 15.5 mm or less, even more preferably a region of 15 mm or less, and particularly preferably a region of 14.5 mm or less, from the boundary between the hollow tube portion 132 and the flavor generating portion 220, from the viewpoint of improving delivery of components generated by heating.

[0114] The ventilation holes (vf) can be arranged so that when inhaling at 17.5 ml / sec using an automatic smoking machine, the air inflow rate (the volumetric rate of air inflowing through the ventilation holes (vf) when the volumetric rate of air inhaled from the mouth end is taken as 100% by volume) is 10 to 90% by volume, preferably 50 to 80% by volume, and more preferably 55 to 75% by volume. This air inflow rate can be achieved, for example, by selecting the number of ventilation holes (vf) per opening group from the range of 5 to 50 and the diameter of the ventilation holes (vf) from the range of 0.1 to 0.5 mm. The air inflow rate can be measured using a roll measuring instrument (e.g., a SODIMAX d74 / SODIM manufactured by S.A.S.) in accordance with a method conforming to ISO 9512.

[0115] The configuration of the outer plug wrap 280 is not particularly limited and can be any common configuration. Specifically, for example, the outer plug wrap 280 can be primarily made of pulp. Pulp can be wood pulp, such as softwood pulp or hardwood pulp, flax pulp, hemp pulp, sisal pulp, or esparto, which are commonly used for inner plug wraps for tobacco products. The outer plug wrap 280 can be obtained by papermaking one or more of these pulps. These pulps can be used alone or in any combination of multiple types in any ratio. Pulp types that can be used include chemical pulp obtained by kraft cooking, acidic, neutral, or alkaline sulfite cooking, and soda cooking, ground pulp, chemi-ground pulp, and thermomechanical pulp. Commercially available products may be used for the outer plug wrap 280. The shape of the outer plug wrap 280 is not particularly limited and can be, for example, square or rectangular.

[0116] The basis weight (Bo) of the outer plug wrap 280 is not particularly limited, but may be, for example, 20 gsm to 70 gsm, preferably 30 gsm to 50 gsm, and more preferably 34 gsm to 38 gsm. The basis weight may be 34.1 to 42.8 gsm. Having the basis weight within the above numerical range provides the effects of sufficient strength, sufficient winding suitability (easy winding), and / or a good balance between function and cost. The thickness (To) of the outer plug wrap 280 is not particularly limited, but may be, for example, 30 mm to 80 mm, preferably 33 mm to 50 mm, and more preferably 35 mm to 40 mm. The thickness may be 35.0 to 44.5 μm. Having the thickness within the above numerical range increases strength and ensures winding suitability.

[0117] The ratio (To / Bo) of the thickness (To) (μm) of the outer plug wrap 280 to the basis weight (Bo) (gsm) of the outer plug wrap 280 is not particularly limited, but is preferably 1.0 to 1.2 μm / gsm, and more preferably 1.03 to 1.11 μm / gsm. When To / Bo is within the above range, the effects of good thermal conductivity and / or a glossy, luxurious impression can be obtained.

[0118] The air permeability of the outer plug wrap 280 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 the rate at which an area of ​​1 cm2 per minute is lost when the differential pressure between both sides of the paper is 1 kPa. ２ Flow rate of gas passing through (cm ３ 1 C.U. is expressed as cm under 1 kPa. ３ / (min cm ２ )

[0119] The outer plug wrap 280 may contain a filler. Examples of fillers include 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, and gypsum. It is preferable that the outer plug wrap 280 contains calcium carbonate, particularly from the viewpoints of improving whiteness and opacity and increasing the heating rate. These fillers may be used alone or in combination.

[0120] Various auxiliary agents may be added to the outer plug wrap 280. The outer plug wrap 280 may contain, for example, a water resistance improver. The water resistance improver may include a wet strength agent (WS agent) and a sizing agent. The wet strength agent may include, for example, urea-formaldehyde resin, melamine-formaldehyde resin, polyamide epichlorohydrin (PAE), etc. The sizing agent may include, for example, rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohol with a saponification degree of 90% or more.

[0121] A coating agent may be added to at least one of the front and back surfaces of the outer plug wrap 280. There are no particular restrictions 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.

[0122] The configuration of the tipping paper 270 is not particularly limited and can be any common configuration. Specifically, for example, the tipping paper 270 can be primarily made of pulp. Pulp can be wood pulp, such as softwood pulp or hardwood pulp, or pulp typically used for inner pulp wrap for tobacco products, such as flax pulp, hemp pulp, sisal pulp, or esparto. The tipping paper 270 can be obtained by papermaking one or more of these pulps. These pulps can be used alone or in any combination of multiple types in any ratio. Pulp types that can be used include chemical pulps produced by kraft cooking, acidic, neutral, or alkaline sulfite cooking, and soda cooking, ground pulp, chemi-ground pulp, and thermomechanical pulp. Commercially available tipping paper 270 can also be used. The shape of the tipping paper 270 is not particularly limited and can be, for example, square or rectangular. Furthermore, the flavor generating article 100 may have one tipping paper 270 or may have a plurality of tipping papers 270 .

[0123] The basis weight of the tipping paper 270 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 270 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 the value of the air permeability of an area of ​​1 cm per minute when the differential pressure between both sides of the paper is 1 kPa. ２ Flow rate of gas passing through (cm ３ 1 C.U. is expressed as cm under 1 kPa. ３ / (min cm ２ )

[0124] The tipping paper 270 may contain a filler. Examples of fillers include 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, and gypsum. It is particularly preferable that the tipping paper 270 contains calcium carbonate, from the viewpoints of improving whiteness and opacity and increasing the heating rate. These fillers may be used alone or in combination of two or more.

[0125] Various auxiliary agents may be added to the tip paper 270. The tip paper 270 may contain, for example, a water resistance improver. The water resistance improver may include a wet strength agent (WS agent) and a sizing agent. The wet strength agent may include, for example, urea formaldehyde resin, melamine formaldehyde resin, polyamide epichlorohydrin (PAE), etc. Furthermore, the sizing agent may be, for example, rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), or highly saponified polyvinyl alcohol with a saponification degree of 90% or more.

[0126] A coating agent may be added to at least one of the front and back surfaces of the tipping paper 270. 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.

[0127] A portion of the outer surface of the tipping paper 270 may be covered with a lip release material. The lip release material refers to a material that helps a user easily separate the tipping paper 270 from their lips without causing substantial adhesion when they hold the mouthpiece of the flavor-generating article 100 between their mouths. The lip release material may include, for example, ethyl cellulose or methyl cellulose. For example, the outer surface of the tipping paper 270 may be coated with the lip release material by applying an ethyl cellulose- or methyl cellulose-based ink to the outer surface of the tipping paper 270. In this embodiment, the lip release material is provided at least in a predetermined mouthpiece region that comes into contact with the user's lips when the user holds the mouthpiece in their mouth. More specifically, the lip release material may be provided on the outer surface of the tipping paper 270 between the mouthpiece end (the end of the filter plug 250) and the vent hole vf.

[0128] Next, the manner in which the components constituting the flavor-generating article 100 are connected will be described. In FIG. 4 , gaps are provided between the components to make the connection easier to see. However, in an actual flavor-generating article 100, the components are adjacent to each other without any gaps, as shown in FIG. 5 . In the flavor-generating article 100 shown in FIG. 4 , the five components are connected using an outer plug wrap 280, a second outer plug wrap 260, and tipping paper 270. Specifically, as shown in FIG. 4 , the outer plug wrap 280 connects the tip plug 112, the flavor-generating section 220, and the hollow tube section 132. Here, the outer plug wrap 280 is wrapped around the tip plug 112, the flavor-generating section 220, and a portion of the hollow tube section 132 to cover them entirely. This connected body is referred to as a first connected body 285. Furthermore, the second outer plug wrap 260 connects the hollow filter 240 and the filter plug 250 to cover them entirely. This connecting body is referred to as the second connecting body 265. Furthermore, tipping paper 270 connects the first connecting body 285 and the second connecting body 265. Here, the tipping paper 270 covers the entire second connecting body 265 and a portion of the first connecting body 285, leaving the first connecting body 285 exposed at the upstream end. In the example shown in FIG. 4 , the outer plug wrap 280 does not cover the hollow tubular portion 132 to its downstream end, leaving the hollow tubular portion 132 exposed at its downstream end. However, the outer plug wrap 280 may cover the hollow tubular portion 132 to its downstream end. In this case, it is preferable that the outer plug wrap 280 has an opening located directly above the ventilation hole vf provided in the hollow tubular portion 132. As a result, it is preferable that the ventilation hole vf be provided so as to penetrate the tipping paper 270, the outer plug wrap 280, and the hollow tubular portion 132.

[0129] FIG. 6 is an exploded perspective view of a flavor generating article 100 according to another embodiment. The flavor generating article 100 shown in FIG. 6 differs from the flavor generating article 100 shown in FIGS. 4 and 5 only in the manner of connection. In the flavor generating article 100 shown in FIG. 6, five components are connected using an outer plug wrap 280, a second outer plug wrap 260, and tipping paper 270. Specifically, as shown in FIG. 6, the outer plug wrap 280 connects the tip plug 112 and the flavor generating section 220 by wrapping them together so as to cover their entirety. This connected body is referred to as a first connected body 285. In the example shown in FIG. 6, the second outer plug wrap 260 connects the hollow filter 240 and the filter plug 250 by wrapping them together so as to cover their entirety. This connected body is referred to as a second connected body 265. Furthermore, the tipping paper 270 connects the first connected body 285, the hollow tube section 132, and the second connected body 265. Here, the tipping paper 270 covers the entire hollow tube portion 132 and the second connecting body 265 and a portion of the first connecting body 285, leaving the first connecting body 285 exposed at the upstream end. Five components may be connected in the configuration shown in Fig. 6. Note that, in Fig. 6, the outer plug wrap 280 covers the flavor generating section 220 up to the downstream end, but the flavor generating section 220 may not be covered all the way to the downstream end, leaving the flavor generating section 220 exposed at the downstream end.

[0130] As shown in Fig. 1 , when the flavor generating article 100 is properly inserted into the chamber 50 of the flavor inhaler 200, a portion of the flavor generating article 100 may be exposed to the outside of the flavor inhaler 200. Specifically, in the state shown in Fig. 1 , all or a portion of the second connecting body 265 shown in Fig. 4 or 6 may be exposed to the outside of the flavor inhaler 200. Furthermore, in the state shown in Fig. 1 , a portion of the hollow tube portion 132 shown in Fig. 4 or 6 may be exposed to the outside of the flavor inhaler 200. In this case, the vent hole vf formed in the hollow tube portion 132 may be exposed to the outside of the flavor inhaler 200, or may be located inside the flavor inhaler 200 (upstream of the opening 210 through which the flavor generating article 100 is inserted). It is preferable that the vent hole vf formed in the hollow tube portion 132 be located inside the flavor inhaler 200, since this makes it less likely for the user to block the vent hole vf.

[0131] The following describes the airflow resistance, hardness, and the like of each segment of the flavor-generating article 100. As shown in FIG. 5 , the flavor-generating article 100 includes a first segment 11, a flavor-generating segment 12, a cooling segment 13, and a second segment 14. The flavor-generating article 100 includes a first end 101 that is inserted into the flavor inhaler 200 and a second end 102 opposite the first end 101. In the illustrated example, the flavor-generating article 100 extends in the longitudinal direction along the central axis AX, and the first end 101 and the second end 102 are formed at both ends along the longitudinal direction. Hereinafter, unless otherwise specified, the terms "radial direction" and "circumferential direction" refer to the radial direction and the circumferential direction of a rotating coordinate system centered on the central axis AX. In the flavor-generating article 100 of this embodiment, the upstream segment can include the first segment 11 and the flavor-generating segment 12, and the downstream segment can include the cooling segment 13 and the second segment 14.

[0132] The first segment 11, the flavor-generating segment 12, the cooling segment 13, and the second segment 14 are arranged in this order from the first end 101 to the second end 102. The first segment 11 has a tip plug 112. The flavor-generating segment 12 has a flavor-generating section 220. The cooling segment 13 has a hollow tube section 132. The second segment 14 includes a filter plug 250 arranged on the second end 102 side and a hollow filter 240 arranged on the first end 101 side. Note that the position of the filter plug 250 is not limited to the position shown in FIG. 5 ; for example, the positions of the filter plug 250 and the hollow filter 240 may be interchanged. Furthermore, in the flavor-generating article 100 shown in FIG. 5 , the hollow filter 240 may be omitted, or the second segment 14 may include three or more filters.

[0133] When using the flavor-generating article 100 to inhale flavor, the first end 101 is inserted into the chamber 50, and the flavor-generating article 100 is positioned at a desired position in the chamber 50. Here, the desired position is a position where the flavor-generating segment 12 can be heated, for example, a position where the heater constituting the heating source 40 overlaps with the flavor-generating segment 12 in the longitudinal direction. Thereafter, the flavor-generating segment 12 is heated, and the user inhales from the second end 102.

[0134] The positional relationship between the flavor generating article 100 and the flavor inhaler 200 to which the flavor generating article 100 is applied will be described. Fig. 7 is an enlarged cross-sectional view showing the atomization unit 30 and the control unit 80 when the flavor generating article 100 is accommodated at a desired position in the flavor inhaler 200. Note that Fig. 7 shows the flavor generating article 100 in a simplified form. When the flavor generating article 100 is accommodated at a desired position in the flavor inhaler 200, the flavor source 221 has, in the longitudinal direction of the flavor generating article 100, a first portion 122 that overlaps with the heat source 40 of the flavor inhaler 200 and a second portion 123 that does not overlap with the heat source 40 of the flavor inhaler 200. The first portion 122 is directly heated by the heat source 40 to generate vapor or aerosol, and the second portion 123 is heated by heat transfer from the heat source 40 to generate vapor or aerosol. Specifically, the second portion 123 is heated by heat transfer from the first portion 122 that was heated earlier, and by heat transfer from components such as the chamber 50 of the flavor inhaler 200 that are heated by the heating source 40.

[0135] Therefore, by setting the longitudinal length of the first portion 122 to be 40% to 60% of the longitudinal length of the flavor source 221 and to be 10 mm or less, vapor or aerosol can also be generated from the second portion 123, so that the desired amount of vapor can be ensured even when the length of the heating source 40 is shorter than the length of the flavor source 221. Furthermore, since the second portion 123 is heated later than the first portion 122 and vapor or aerosol is generated even during the latter part of the puffing action, stable delivery can be maintained during use of the flavor inhaler 200.

[0136] 7, the longitudinal length of the heat source 40 overlapping with the first portion 122 is the same as the longitudinal length of the first portion 122, is 40% to 60% of the longitudinal length of the flavor source 221, and is 10 mm or less. By making the heat source 40 shorter than the overall length of the flavor source 221, the power consumption of the flavor inhaler 200 can be reduced.

[0137] 7 , the first portion 122 includes the downstream end of the flavor source 221. That is, the flavor source 221 is composed of the first portion 122 arranged on the upstream side and the second portion 123 arranged on the downstream side, and the second portion 123 does not exist downstream of the first portion 122. Therefore, it is possible to prevent the vapor or aerosol generated in the flavor source 221 from condensing in the second portion 123, which is not directly heated by the heating source 40.

[0138] The first segment 11 is a segment located on the first end 101 side of the flavor-generating segment 12. The first segment 11 preferably extends from the first end 101 to the end of the flavor-generating segment 12 on the first end 101 side. The first segment 11 includes a tip plug 112 including a first filler 211 and a first inner plug wrap 212. The first segment 11 preferably does not have a hole or slit for inserting a heater such as a pin-type heater. This reduces the risk of steam leaking from the first segment 11 when using the flavor-generating article 100 with an externally heated flavor inhaler 200. Furthermore, if a hole or slit is provided in the center of the end face of the first segment 11, the introduction of air near the center of the first segment 11, which is not directly heated, may reduce the delivery of flavor components, especially in the initial heating stage. However, this reduces this risk.

[0139] Hereinafter, when a segment is "solid," this includes the case where the space connecting the first end 101 and the second end 102 of the segment is filled with a filler material that allows air to pass through. Therefore, the filler material may be made of a fibrous or porous material. Furthermore, when a segment is "filled," this means that the filler material is arranged in the segment to the extent that it generates airflow resistance.

[0140] The tip plug 112 constituting the first segment 11 is preferably solid. In the first segment 11, a space connecting the first end 101 and the second end 102 of the first segment 11 is filled with a first filler material 211. This reduces the risk of vapor leakage from the first segment 11 and the risk of a decrease in the delivery of flavor components, as described above.

[0141] Hereinafter, the airflow resistance per segment of the first segment 11 will be referred to as the first airflow resistance, and the airflow resistance per segment of the second segment 14 will be referred to as the second airflow resistance. In the flavor-generating article of this embodiment, the first airflow resistance is preferably lower than the second airflow resistance. Herein, the airflow resistance is measured in accordance with the ISO standard method (ISO 6565:2015) using, for example, a filter airflow resistance measuring device 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) without air permeation through the side of the object.

[0142] The first air resistance is 50 mmH ２ Preferably 0 or less, 40 mmH ２ 0 or less is more preferable, and 30 mmH ２ 0 or less is more preferable, and 20 mmH ２ A value of 0 or less is even more preferable. If the first airflow resistance is small, it becomes easier for the user to inhale. If the first airflow resistance is too small, there is an increased risk that steam will leak from the first segment 11, or that air will be introduced into parts of the first segment 11 that are not directly heated, reducing the delivery of flavor components at the initial stage of heating, etc. From this perspective, the first airflow resistance is set to 0 mmH２ Larger than O, 10mmH ２ In view of the above, the first airflow resistance is preferably 0 mmH ２ Larger than O, 50mmH ２ It is preferably 0 or less.

[0143] The first filler 211 of the first segment 11 preferably contains at least one of cellulose acetate, paper, and nonwoven fabric. This allows the first segment 11 to be easily manufactured while adjusting the first airflow resistance. From the same perspective as well as from the perspective of environmental protection, it is more preferable that the first filler 211 contains paper. After crimping one or more sheets of paper contained in the first filler 211, the paper is folded and filled. Here, crimping is a process in which a sheet is passed between multiple rollers to form creases and irregularities in the sheet, which can change the hardness and airflow resistance of the sheet.

[0144] The paper used as a paper filter for a smoking article can be used as the first filler material 211. The paper used as the first filler material 211 has a thickness of, for example, 20 μm or more and 1500 μm or less, and a basis weight of, for example, 20 g / m ２ 50g / m or more ２ The paper as the first filler material 211 preferably has a rectangular shape, in which case one side has a length approximately equal to the length of the tip plug 112, and the other side can have a length of 100 mm or more and 300 mm or less. Although the thickness, basis weight, and size of the paper used as the first filler material 211 have been described, these values ​​refer to the values ​​for the paper before it is subjected to a shaping process (e.g., a pleating process, etc.). When the first filler material 211 is made of a material other than paper and has a sheet shape, such first filler material 211 can have the same thickness and size as paper. The first filler material 211 does not have to include tobacco materials such as tobacco shreds or sheet tobacco.

[0145] The total length of the first segment 11 is preferably 10 mm or less, and more preferably 8 mm or less. If the first segment 11 is short, the flavor generating article 100 can be configured compactly. If the first segment 11 is too short, it becomes difficult to manufacture the first segment 11 or to connect it to other segments, so the total length of the first segment 11 is preferably 5 mm or more. In view of the above, the total length of the first segment 11 is preferably 5 mm or more and 10 mm or less. The tip plug 112 constituting the first segment 11 can be manufactured to a predetermined length and then cut to any desired length.

[0146] As shown in FIG. 5 , the flavor generating segment 12 includes a flavor source 221 and a tubular inner plug wrap 222 that covers the flavor source 221. The flavor source 221 is preferably filled with a third filler material 300 in a space that connects the first end 101 and the second end 102 of the flavor generating segment 12. This allows a larger amount of flavor source 221 to be placed in the flavor generating segment 12. For example, the flavor generating segment 12 may be filled with the above-mentioned tobacco filler, such as shredded tobacco or a tobacco sheet, as the third filler material 300. When the third filler material 300 is in sheet form, the third filler material 300 may be folded or concentrically arranged around the central axis AX. The filling method is not particularly limited as long as the flavor generating segment 12 can be formed with the desired airflow resistance. The flavor generating segment 12 is preferably solid.

[0147] The airflow resistance per segment of the flavor generating segment 12 is 10 mmH ２ 0 or more is preferable, 15 mmH ２ 0 or more is more preferable. When the airflow resistance is high, more flavor sources 221 can be arranged in the flavor generating segment 120. If the airflow resistance is too high, it becomes difficult for the user to inhale. Therefore, the airflow resistance is set to 50 mmH or less. ２ It is preferable that the pressure is 40 mmH or less. ２ It is more preferable that the pressure is 30 mmH or less. ２ In view of the above, the airflow resistance is preferably 10 mmH or less. ２ O or more 50mmH ２It is preferably 0 or less.

[0148] The cooling segment 13 is composed of the above-mentioned hollow tube portion 132. The ventilation hole vf is a hole for promoting the inflow of air from the outside when the user inhales, and this inflow of air cools the vapor or aerosol generated in the flavor source 221. By having the cooling segment 13, which is disposed between the flavor-generating segment 12 and the second segment 14 and cools the vapor or aerosol generated in the flavor-generating segment 12, the flavor-generating article 100 can deliver flavor components to the user at an appropriate temperature.

[0149] The second segment 14 is a segment disposed on the second end 102 side of the flavor generating segment 12. The second segment 14 includes a filter plug 250 and a hollow filter 240 aligned in the longitudinal direction, and a second outer plug wrap 260 that covers the filter plug 250 and the hollow filter 240. The second segment 14 is not particularly limited as long as it functions as a filter, such as adjusting the flow of air during flavor inhalation or adjusting the amount of flavor or other impurities. The second segment 14 can also function as a rear plug that prevents components located on the first end 101 side of the second segment 14 from falling out.

[0150] The second outer plug wrap 260 may connect the second segment 14 to a segment upstream of the second segment 14 (all or at least one of the first segment 11, the flavor generating segment 12, and the cooling segment 13). Alternatively, the outer plug wrap 280 may connect the second segment 14 to a segment upstream of the second segment 14 (all or at least one of the first segment 11, the flavor generating segment 12, and the cooling segment 13). In this case, the second outer plug wrap 260 may be omitted.

[0151] The filter plug 250 includes a second filler material 251 and a cylindrical second inner plug wrap 252 that encases the second filler material 251. The filter plug 250 has the second filler material 251 filled in a space that connects the first end 101 and the second end 102 of the filter plug 250. This improves the filtering capacity compared to when the second segment 14 is composed only of a hollow filter. The filter plug 250 is preferably solid. Note that a filter that does not function as a plug may be disposed in the second segment 14 instead of the filter plug 250.

[0152] By providing the hollow filter 240 to the second segment 14, the hardness of the second segment 14 that can function as a mouthpiece can be improved, and bending and flexing can be suppressed.

[0153] The second airflow resistance, which is the airflow resistance per segment of the second segment 14, is 10 mmH ２ 0 or more is preferable, 15 mmH ２ If the second airflow resistance is too low, the second segment 14 becomes soft, making it difficult to wind it during manufacturing and to connect it to other segments using tipping paper 270. The second airflow resistance is preferably 50 mmH or more. ２ It is preferable that the pressure is 40 mmH or less. ２ It is more preferable that the pressure is 30 mmH or less. ２ It is more preferable that the second airflow resistance is 10 mmH or less. If the second airflow resistance is too high, it becomes difficult for the user to inhale. In view of the above, the second airflow resistance is set to 10 mmH or less. ２ O or more 50mmH ２ It is preferably 0 or less.

[0154] Flavor-generating article 100 of this embodiment can be manufactured with its airflow resistance adjusted by adjusting the amount, material, or shape of the filler filled in segments such as first segment 11 and second segment 14. Flavor-generating article 100 can also be manufactured with its hardness adjusted by adjusting the amount, material, or shape of the filler filled in each segment, or by adjusting the thickness or material of wrappers such as first inner plug wrap 212 and second outer plug wrap 260 that are disposed to cover each segment.

[0155] The present invention will be experimentally explained by the following examples, but the following explanation is not intended to limit the scope of the present invention to the following examples.

[0156] Table 1 below shows examples of materials (inner plug wrap or outer plug wrap) used in the flavor-generating article. In Table 1, "CP" corresponds to the inner plug wrap that wraps the flavor source of the flavor-generating segment, "PW" corresponds to the inner plug wrap that wraps the filler of the first segment, and "TP" corresponds to the outer plug wrap that covers the inner plug wrap. Furthermore, the smoothness, static friction coefficient, and dynamic friction coefficient were measured for the front and back of each material. Smoothness was measured in accordance with JIS P 8119. The static friction coefficient and dynamic friction coefficient were measured by measuring the friction coefficient in the MD direction of one sheet of each material against stainless steel with a load of 1000 g. The measurement results are shown in Table 1. The flavor-generating articles of Examples 1 to 9 can be prepared by combining the materials listed in Table 1 as shown in Table 2 below.

[0157]

[0158]

[0159] The flavor-generating articles of Examples 1 to 9 shown in Table 2 satisfy the above-mentioned formula (1). Such flavor-generating articles of Examples 1 to 9 suppress the occurrence of roll-up stains and are excellent in ease of insertion into or removal from the housing of the flavor inhaler.

[0160] Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications are possible within the scope of the claims and the technical idea described in the specification and drawings. Note that any shape or material not directly described in the specification or drawings is within the scope of the technical idea of ​​the present invention as long as it achieves the functions and effects of the present invention.

[0161] Preferred aspects are as follows: [1] A flavor generating article that generates a flavor when heated by a non-combustion heating flavor inhaler, comprising: a first end inserted into the flavor inhaler; a second end opposite to the first end; an upstream segment including at least one segment, each of the at least one segment including a flavor source or a filler material and an inner plug wrap wrapping the flavor source or the filler material; and an outer plug wrap wrapping the inner plug wrap, wherein one or more of the at least one segment satisfies the following formula (1): Ti / Bi > To / Bo (1) (Ti: thickness (μm) of the inner plug wrap Bi: basis weight (gsm) of the inner plug wrap To: thickness (μm) of the outer plug wrap Bo: basis weight (gsm) of the outer plug wrap). [2] The flavor generating article according to [1], wherein the Ti / Bi is 1.01 to 1.65 μm / gsm. [3] The flavor generating article according to [1] or [2], wherein the To / Bo is 1.0 to 1.2 μm / gsm. [4] The flavor generating article according to any one of [1] to [3], wherein the Ti is 35.0 to 86.4 μm. [5] The flavor generating article according to any one of [1] to [4], wherein the Bi is 27.5 to 64.58 gsm. [6] The flavor generating article according to any one of [1] to [5], wherein the To is 35.0 to 44.5 μm. [7] The flavor generating article according to any one of [1] to [6], wherein the Bo is 34.1 to 42.8 gsm. [8] The flavor generating article according to any one of [1] to [7], further comprising a hollow tubular portion disposed on the second end side of the upstream segment and cooling the vapor or aerosol generated in the upstream segment. [9] The flavor generating article according to [8], wherein the outer plug wrap connects the upstream segment to the hollow tubular portion.

[10] The flavor generating article according to any one of [1] to [9], wherein the at least one segment includes a flavor generating segment and a first segment disposed on the first end side of the flavor generating segment.

[11] The flavor generating article according to

[10] , wherein the outer plug wrap connects the flavor generating segment to the first segment.

[12] The flavor generating article according to any one of [1] to

[11] , further comprising a second segment having a filter and arranged on the second end side of the upstream segment.

[13] The flavor generating article according to any one of [1] to

[12] , wherein the flavor generating article is a tobacco stick.

[14] A flavor generating system comprising the flavor generating article according to any one of [1] to

[13] , and a non-combustion heating type flavor inhaler.

[15] The flavor generating system according to

[14] , further comprising a heat source that generates heat when the flavor generating article is heated.

[16] The flavor generating system according to

[15] , wherein the flavor inhaler has a storage section in which the flavor generating article is stored, and the heat source is a heater that heats the flavor generating article stored in the storage section from outside the flavor generating article.

[0162] 11: First segment 12: Flavor generating segment 13: Cooling segment 14: Second segment 20: Power supply unit 30: Atomization unit 40: Heat source 50: Chamber 80: Control unit 100: Flavor generating article 101: First end 102: Second end 132: Hollow tube unit 200: Flavor inhaler 211: First filler 221: Flavor source 222: Inner plug wrap 240: Hollow filter 250: Filter plug 251: Second filler 280: Outer plug wrap 300: Third filler 1000: Flavor generating system AX: Central axis

Claims

1. A flavor generating product that generates a flavor when heated by a non-combustion heating flavor inhaler, comprising: a first end inserted into the flavor inhaler; a second end opposite the first end; an upstream segment including at least one segment, each of the at least one segment including a flavor source or a filler material and an inner plug wrap wrapping the flavor source or the filler material; and an outer plug wrap wrapping the inner plug wrap, wherein one or more of the at least one segment satisfies the following formula (1): Ti / Bi > To / Bo (1) (Ti: thickness (μm) of the inner plug wrap; Bi: basis weight (gsm) of the inner plug wrap; To: thickness (μm) of the outer plug wrap; Bo: basis weight (gsm) of the outer plug wrap).

2. The flavor generating article of claim 1, wherein said Ti / Bi is 1.01 to 1.65 μm / gsm.

3. The flavor-generating article according to claim 1 or 2, wherein the To / Bo is 1.0 to 1.2 μm / gsm.

4. A flavor-generating article according to any one of claims 1 to 3, wherein the Ti has a particle size of 35.0 to 86.4 µm.

5. A flavor generating article according to any one of claims 1 to 4, wherein the Bi is 27.5 to 64.58 gsm.

6. A flavor-generating article according to any one of claims 1 to 5, wherein To is 35.0 to 44.5 μm.

7. The flavor generating article according to any one of claims 1 to 6, wherein the Bo is 34.1 to 42.8 gsm.

8. A flavor generating article described in any one of claims 1 to 7, further comprising a hollow tube portion disposed on the second end side of the upstream segment for cooling the vapor or aerosol generated in the upstream segment.

9. The flavor generating article of claim 8, wherein said outer plug wrap connects said upstream segment and said hollow tube portion.

10. A flavor-generating article according to any one of claims 1 to 9, wherein the at least one segment includes a flavor-generating segment and a first segment disposed on the first end side of the flavor-generating segment.

11. The flavor generating article of claim 10, wherein said outer plug wrap connects said flavor generating segment and said first segment.

12. A flavor generating article as described in any one of claims 1 to 11, further comprising a second segment having a filter and disposed on the second end side of the upstream segment.

13. The flavor generating article according to any one of claims 1 to 12, wherein the flavor generating article is a tobacco stick.

14. A flavor generating system comprising: a flavor generating article according to any one of claims 1 to 13; and a non-combustion heating type flavor inhaler.

15. The flavor generating system of claim 14, further comprising a heat source that generates heat upon heating of the flavor generating article.

16. The flavor generating system according to claim 15, wherein the flavor inhaler comprises a storage section in which the flavor generating article is stored, and the heat source is a heater that heats the flavor generating article stored in the storage section from outside the flavor generating article.

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