Flavor-generating article

Abstract

This flavor-generating article comprises a flavor source and a container for accommodating the flavor source. The container has an air inlet and an air outlet. The width and length of the container are at least twice the maximum thickness of the container. The length of a first air flow path between the air outlet and the flavor source is shorter than the length of a second air flow path between the air inlet and the flavor source.

Description

Flavor-generating products

[0001] The present invention relates to a flavor generating article.

[0002] Flavor inhalers for inhaling flavors and the like without burning the material are known. For example, smoking material heating devices are known as such flavor inhalers, which heat smoking material made of tobacco containing volatile components to form an aerosol. A known example of such smoking material is a consumable product that includes a slab of tobacco, a spacer, and a filter (see Patent Document 1).

[0003] International Publication No. 2019 / 162497

[0004] An object of the present invention is to provide a flavor generating article having a new structure.

[0005] According to a first aspect, there is provided a flavor generating article. The flavor generating article includes a flavor source and a container containing the flavor source. The container has an air inlet and an air outlet. The width and length of the container are at least twice the maximum thickness of the container. The length of a first air flow path between the air outlet and the flavor source is at least equal to the length of a second air flow path between the air inlet and the flavor source, and the length of the second air flow path is greater than zero.

[0006] In this case, leakage of vapor or aerosol generated from the flavor source from the first air flow path during heating of the flavor source while the user is not smoking can be suppressed compared to when the length of the first air flow path is shorter than the length of the second air flow path, and the vapor or aerosol generated from the flavor source can be cooled more effectively in the first air flow path compared to when the length of the first air flow path is shorter than the length of the second air flow path.

[0007] The flow area of ​​the flavor source may be greater than the flow area of ​​the first air flow path.

[0008] In this case, since the flow area of ​​the first air flow path is relatively small, leakage of vapor or aerosol generated from the flavor source from the first air flow path can be suppressed when the flavor source is heated while the user is not smoking. Furthermore, the flavor source can be prevented from falling off the flavor-generating article through the first air flow path. Furthermore, the flow velocity of air passing through the flavor source can be slower than the flow velocity of air passing through the first air flow path. This increases the time that air remains around the flavor source, allowing more flavor components to be entrained in the air. Furthermore, the flavor components passing through the first air flow path can be less likely to aggregate on the wall surface of the first air flow path.

[0009] The flow area of ​​the flavor source may be greater than the flow area of ​​the second air flow path.

[0010] In this case, since the flow area of ​​the second air flow path is relatively small, leakage of vapor or aerosol generated from the flavor source from the second air flow path can be suppressed when the flavor source is heated while the user is not smoking. Furthermore, the flavor source can be prevented from falling off the flavor-generating article through the second air flow path. Furthermore, the flow velocity of air passing through the flavor source can be slower than the flow velocity of air passing through the second air flow path. This allows relatively fast air from the second air flow path to enter the flavor source and collide with the flavor source, thereby diffusing the air. As a result, the air spreads throughout the flavor source, allowing flavor components generated in the flavor source to be efficiently delivered downstream.

[0011] The first air flow path may have a first flow path portion having a substantially constant width and a second flow path portion that connects the flavor source to the first flow path portion and whose width narrows downstream.

[0012] In this case, a second flow path portion that narrows toward the downstream side is provided between the flavor source and the first flow path portion, allowing the vapor or aerosol from the flavor source to be smoothly delivered to the first flow path portion. Furthermore, since the second flow path portion allows the flow path width to narrow toward the downstream side, the flow path width of the first air flow path can be reduced even when the flavor source is relatively wide. As a result, leakage of the vapor or aerosol generated by the flavor source from the first air flow path can be suppressed.

[0013] The width of the upstream end of the second flow path portion may be substantially equal to or less than the width of the flavor source, and the width of the downstream end of the second flow path portion may be substantially equal to the width of the first flow path portion.

[0014] In this case, since there is substantially no difference in width between the second flow path section and the first flow path section, pressure loss at the boundary between the second flow path section and the first flow path section can be suppressed. Furthermore, if the width of the upstream end of the second flow path section is substantially equal to the width of the flavor source, pressure loss at the boundary between the flavor source and the second flow path section can be suppressed.

[0015] The second air flow passage may increase in width in a downstream direction.

[0016] In this case, the air from the air inlet passes through the second air flow path, and can be diffused in the width direction, so that the air can be supplied to a wider range of the flavor source.

[0017] The width of the upstream end of the second air flow path may be substantially equal to the width of the air inlet. The width of the downstream end of the second air flow path may be substantially equal to or less than the width of the flavor source.

[0018] In this case, since there is substantially no difference in width between the air inlet and the second air flow path, pressure loss at the boundary between the air inlet and the second air flow path can be suppressed.Furthermore, if the width of the downstream end of the second air flow path is substantially equal to the width of the flavor source, pressure loss at the boundary between the second air flow path and the flavor source can be suppressed.

[0019] The first air flow path and the second air flow path may be positioned on substantially the same axis.

[0020] In this case, the air flow path including the second air flow path and the first air flow path is prevented from bending, and therefore an increase in suction resistance or pressure loss can be prevented.

[0021] The flavor source may be in the form of a block, sheet, particles, or paste.

[0022] In this case, the flavor source may be in any form such as a block, sheet, particle, or paste.

[0023] The flavor generating article may have a plurality of the air outlets and a plurality of the first air flow paths between the plurality of air outlets and the flavor source.

[0024] In this case, the contact area between the vapor or aerosol generated by the flavor source and the wall surface of the container defining the multiple first air flow paths can be increased, thereby improving the cooling efficiency of the vapor or aerosol.

[0025] The thickness of the container in the portion where the flavor source, the first air flow path, or the second air flow path is located may be greater than the thickness of the container in the portion where the flavor source, the first air flow path, and the second air flow path are not located.

[0026] In this case, the thickness of the container in the portion where the flavor source, the first air flow path, and the second air flow path are not located can be made relatively small, thereby making the overall size of the container compact.

[0027] The container may have a first member and a second member that is directly or indirectly joined to the first member.

[0028] In this case, by sandwiching the flavor source between the first member and the second member, the flavor source can be easily accommodated in the container.

[0029] The container has a joint surface between the first member and the second member, and the first member or the second member at the portion where the flavor source, the first air flow path, or the second air flow path is located may protrude toward the first member or the second member beyond the joint surface.

[0030] In this case, the first member or the second member has a recess in relation to the joining surface, and this recess can function as a space in which a flavor source is placed or as an air flow path.

[0031] The first member and the second member may be joined to each other via a spacer. The container may have a substantially uniform thickness overall.

[0032] In this case, the entire container of the flavor-generating article has a substantially uniform thickness, which makes it easier to handle the flavor-generating article.

[0033] The length of the container may be equal to or greater than the width of the container.

[0034] In this case, the flavor generating article can have a shape different from the traditional cylindrical tobacco stick.

[0035] According to a second aspect, a flavor-generating article is provided. The flavor-generating article includes a flavor source and a container that accommodates the flavor source. The width and length of the container are at least twice the maximum thickness of the container. The container includes a first member, a second member joined to the first member, first and second ends facing each other in a first direction, and third and fourth ends facing each other in a second direction perpendicular to the first direction. The first and second members face each other with the flavor source located therebetween. At least one end of the first member and at least one end of the second member are joined to each other at the first end to form a first flange portion.

[0036] In this case, since the width and length of the container are at least twice the maximum thickness of the container, the flavor generating article can have a nearly flat shape overall. Thus, even if the flavor generating article has a special shape, the user can grasp the first flange portion, making it easy to handle the flavor generating article. In particular, when the flavor generating article is partially hot, such as when removing the flavor generating article from the flavor inhaler after use, the user can handle the flavor generating article more safely. Furthermore, when the flavor generating article is placed in the recess of the flavor inhaler, the first flange portion may come into contact with the wall portion defining the recess of the flavor inhaler. At this time, the first flange portion bends, and the flavor generating article is biased against the wall portion, thereby positioning the flavor generating article. The first and second members may be integrally formed at one end. That is, for example, a single member may be folded to form a portion corresponding to the first member and a portion corresponding to the second member facing the first member.

[0037] At least one end of the first member and at least one end of the second member may be joined to each other at the second end to form a second flange portion.

[0038] In this case, the user can grasp the second flange portion, making it easier to handle the flavor-generating article.

[0039] At least one end of the first member and at least one end of the second member may be joined to each other at the third end to form a third flange portion.

[0040] In this case, the user can grasp the third flange portion, making it even easier to handle the flavor-generating article.

[0041] At least one end of the first member and at least one end of the second member may be joined to each other at the fourth end to form a fourth flange portion.

[0042] In this case, the user can grasp the fourth flange portion, making it even easier to handle the flavor-generating article.

[0043] The first flange portion may project away from the flavor source.

[0044] In this case, the first flange portion protrudes toward the outside of the flavor-generating article, allowing the user to easily grasp the first flange portion.

[0045] The first flange portion may extend over the entire length of the container in the second direction.

[0046] In this case, the range of the first flange portion that the user can grasp is increased, making it easier to handle the flavor-generating article.

[0047] A flavor-generating article, wherein the ratio of the length of the joint between the first member and the second member in the first direction to the length of the container excluding the joint in the first direction is 0.1 or more and 0.3 or less.

[0048] If the ratio is less than 0.1, the length of the joint relative to the overall length of the container becomes shorter, making it difficult for the user to grasp the joint. On the other hand, if the ratio is greater than 0.3, the length of the joint relative to the overall length of the container becomes longer, increasing the overall size of the container. Therefore, in the above case, it is possible to make it easier for the user to grasp the joint and prevent the overall size of the container from increasing.

[0049] At least one of the first member and the second member may be concave.

[0050] In this case, at least one of the first member and the second member can have the flavor source disposed in the recessed portion, so that the flavor source can be easily positioned relative to the container.

[0051] The first member and the second member may be formed of different materials.

[0052] In this case, since appropriate materials can be used for the first and second members, the container for the flavor-generating article can be designed with a high degree of freedom.

[0053] The first member and the second member may be formed of paper.

[0054] In this case, the container can be manufactured cheaply and easily.

[0055] The first and second members may be formed from air-impermeable paper.

[0056] In this case, it is possible to prevent vapor or aerosol generated from the flavor source from leaking from unintended portions of the container.

[0057] At least one of the first member and the second member may have a water-resistant coating on at least one of an inner surface and an outer surface.

[0058] In this case, it is possible to prevent moisture from penetrating into the flavor source in the container.

[0059] The flavor source may be in the form of a block, sheet, particles, or paste.

[0060] In this case, the flavor source may be in any form such as a block, sheet, particle, or paste.

[0061] The flavor generating article may include a susceptor housed in the container.

[0062] In this case, the flavor source can be heated by inductively heating the susceptor of the flavor-generating article with an induction coil provided in the flavor inhaler.

[0063] The container may have an air inlet and an air outlet, the air inlet and the air outlet being defined by the first member and the second member.

[0064] In this case, when joining the first member and the second member, by forming a portion that is not joined, it is possible to form the air inlet and the air outlet.

[0065] According to a third aspect, there is provided a method for manufacturing a flavor-generating article, the method comprising: placing the flavor source on the first member; placing the second member such that the flavor source is located between the first member and the second member; and joining at least one end of the first member and at least one end of the second member to each other at the first end.

[0066] In this case, a flange portion that can be grasped by a user can be formed at the first end of the container, thereby producing a flavor-generating article that is easy to handle.

[0067] According to a fourth aspect, there is provided a flavor generating article. The flavor generating article includes a flavor source and a container containing the flavor source. The container has an air inlet and an air outlet. The width and length of the container are at least twice the maximum thickness of the container. The length of a first air flow path between the air outlet and the flavor source is shorter than the length of a second air flow path between the air inlet and the flavor source.

[0068] In this case, compared to when the length of the first air flow path is longer than the length of the second air flow path, leakage of vapor or aerosol generated from the flavor source from the second air flow path can be suppressed when the flavor source is heated while the user is not smoking.

[0069] The flavor source may have an air inlet and an air outlet, and the second air flow path may pass over a surface of the flavor source other than the air inlet and the air outlet and communicate with the air inlet.

[0070] In this case, an air layer is formed on the surface of the flavor source, which can prevent the heat of the flavor source from being transferred to the outside of the container.

[0071] The flavor source may have a major surface, and the second air flow passage may pass over the major surface of the flavor source and communicate with the air inlet.

[0072] In this case, an air layer is formed on the main surface of the flavor source, so that a large area of ​​the air layer can be secured, and heat transfer from the flavor source to the outside of the container can be further suppressed. Note that, in this specification, the main surface of the flavor source refers to the flat surface having the largest area of ​​the flavor source.

[0073] The container may have a first end and a second end opposite the first end, the air outlet may be provided at the first end, and the air inlet may be provided closer to the first end than the air flow inlet of the flavor source.

[0074] In this case, air flowing in from the air inlet of the container flows toward the second end, enters the air inlet of the flavor source, and then flows to the air outlet provided at the first end. That is, the air flowing in from the air inlet flows from the first end toward the second end and then flows back toward the first end, so this flavor-generating article has a so-called counterflow air flow path. Therefore, in this case, leakage of vapor or aerosol generated by the flavor source from the second air flow path and the air inlet can be further suppressed.

[0075] The container may have two of the air inlets and two of the second air flow paths between the two air inlets and the flavor source.

[0076] In this case, even if one of the air inlets or the second air flow path is blocked, air can be supplied to the flavor source from the other air inlet or the second air flow path.

[0077] The container may have a first end and a second end opposite the first end, and the first air flow path and the second air flow path may overlap in a first direction connecting the first end and the second end.

[0078] When the first air flow path and the second air flow path do not overlap in the first direction, the length of the container in the first direction may be increased, and therefore, in this case, the length of the container in the first direction can be reduced while ensuring the lengths of the first air flow path and the second air flow path, compared to when the first air flow path and the second air flow path do not overlap in the first direction.

[0079] The container and the flavor source may be configured to separate the first air flow path from the second air flow path such that the first air flow path and the second air flow path are not in direct communication with each other.

[0080] In this case, it is possible to prevent air that flows in from the air inlet and passes through the second air flow path from passing through the first air flow path without passing through the flavor source and reaching the air outlet, thereby more reliably delivering the vapor or aerosol generated in the flavor source to the air outlet.

[0081] The flavor source may be sealed by the container except for a portion that communicates with the first air flow path and the second air flow path.

[0082] In this case, it is possible to prevent the vapor or aerosol generated in the flavor source from leaking from portions of the flavor source other than the portions communicating with the first air flow path and the second air flow path.

[0083] A portion of the second air flow path may be located to the side of the flavor source, and the container may seal between the second air flow path and the flavor source.

[0084] In this case, a portion of the second air flow path passes beside the flavor source before flowing into the flavor source, so that the length of the second air flow path can be ensured.

[0085] The flavor source may be adhered to the container.

[0086] In this case, the flavor source can be easily positioned and secured relative to the container.

[0087] The container may have a first member and a second member that is joined to the first member, and at least one of the first member and the second member may have a recess that defines at least one of the first air flow path and the second air flow path before being joined to each other.

[0088] In this case, since the recesses are formed in advance, it is not necessary to form the first air flow path or the second air flow path when joining the first member and the second member, which makes it possible to improve the accuracy of the first air flow path or the second air flow path compared to when the first air flow path or the second air flow path is formed when joining the first member and the second member.

[0089] At least one of the first air flow path and the second air flow path may be at least partially defined by the container and the flavor source.

[0090] In this case, since the flavor source is used to partially define at least one of the first air flow path and the second air flow path, the container material can be reduced compared to when at least one of the first air flow path and the second air flow path is defined by the container alone.

[0091] FIG. 1 is a schematic side view of a flavor inhaler for heating a flavor generating article according to the present embodiment; FIG. 2 is a schematic view of an example of a flavor inhaler; FIG. 3 is a perspective view of a flavor source; FIG. 4 is a side view of a flavor source; FIG. 5 is a schematic plan view of a flavor generating article according to the present embodiment; FIG. 6 is a schematic side view of a flavor generating article according to the present embodiment; FIG. 7 is a schematic perspective view of a flavor generating article according to another embodiment; FIG. 8 is a schematic plan view of a flavor generating article according to another embodiment; FIG. 9 is a schematic plan view of a flavor generating article according to another embodiment;

[0092] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings described below, identical or corresponding components are designated by the same reference numerals, and redundant description will be omitted. In this specification, the term "longitudinal direction" refers to the direction in which air passes through the flavor source of the flavor-generating product or the longitudinal direction of the flavor-generating product. In addition, in this specification, the term "short direction" or "width direction" refers to the direction perpendicular to the longitudinal direction.

[0093] 1 is a schematic side view of a flavor inhaler for heating a flavor-generating article according to the present embodiment. The flavor inhaler 100 according to the present embodiment is configured to generate vapor or aerosol by heating a flavor source contained in the flavor-generating article. As shown in the figure, the flavor inhaler 100 has a first housing 110, a second housing 120, and a mouthpiece 130. The first housing 110 and the second housing 120 may be configured to be detachable from each other. The mouthpiece 130 may be detachably connected to one end of the second housing 120 or may be formed integrally with the second housing 120.

[0094] 2 is a schematic diagram of an example of a flavor inhaler 100. As shown in the figure, the flavor inhaler 100 has a battery 140, a heating unit 150, and a control circuit 170 arranged inside a first housing 110, and a cooling unit 160 arranged inside a second housing 120. The first housing 110 and the second housing 120 are rotatably connected to each other, for example, by a hinge. The first housing 110 and the second housing 120 may also be connected to each other so as to be completely separable, for example, by snap fitting or screwing. By completely separating the first housing 110 and the second housing 120 from each other in this manner, the cooling unit 160, the mouthpiece 130, and the heating unit 150 can be easily cleaned.

[0095] The battery 140 is configured to supply power to the heating unit 150, the control circuit 170, etc. For example, the battery 140 is a lithium-ion battery. The battery 140 may be rechargeable by an external power source. The cooling unit 160 is configured to cool the aerosol generated from the flavor-generating article 10. The cooling unit 160 may be, for example, a space in which the aerosol passing through it is naturally cooled. Alternatively, the cooling unit 160 may be arranged or filled with one or more materials selected from the group consisting of polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polylactic acid, cellulose acetate, and aluminum foil. By arranging or filling the cooling unit 160 with these materials, the aerosol can be cooled more efficiently.

[0096] In the illustrated example, the heating unit 150 includes a storage unit that stores the flavor generating article 10 and an induction coil 150b for inductively heating a susceptor included in the flavor generating article 10 stored in the storage unit. The flavor inhaler 100 shown in FIG. 2 may include an electromagnetic shield (not shown) between the heating unit 150 and the control circuit 170 to prevent electromagnetic waves generated by the induction coil 150b from reaching the control circuit 170. The heating unit 150 is configured to heat the flavor generating article 10 to, for example, 200°C or higher and 350°C or lower. Alternatively, the heating unit 150 may include a resistance heating element that heats the flavor generating article 10 from the outside. In this case, the flavor generating article 10 does not need to include a susceptor.

[0097] The control circuit 170 is configured with a CPU, a memory, etc., and controls the operation of the flavor inhaler 100. For example, the control circuit 170 starts heating the flavor-generating article 10 in response to a user's operation on an input device such as a push button or a slide switch (not shown), and stops heating the flavor-generating article 10 after a certain time has elapsed. The control circuit 170 may stop heating the flavor-generating article 10 even before the certain time has elapsed since the start of heating the flavor-generating article 10 if the number of puffing actions by the user exceeds a certain value. For example, the puffing action is detected by a sensor (not shown).

[0098] Alternatively, the control circuit 170 may start heating the flavor-generating article 10 in response to the start of a puffing action, and may stop heating the flavor-generating article 10 in response to the end of the puffing action. The control circuit 170 may stop heating the flavor-generating article 10 when a certain time has elapsed since the start of the puffing action, even before the end of the puffing action. In the illustrated example, the control circuit 170 is disposed between the battery 140 and the heating unit 150, and suppresses heat transfer from the heating unit 150 to the battery 140.

[0099] The flavor-generating article 10 generates vapor or aerosol of a flavor source by being heated by the heating section 150. The vapor or aerosol generated in the flavor-generating article 10 is cooled by passing through the cooling section 160 and reaches the user's mouth through the mouthpiece 130. In this embodiment, the flavor-generating article 10 is in the form of a sheet, a plate, or a card.

[0100] 1 and 2, the mouthpiece 130 and the cooling unit 160 are provided in the flavor inhaler 100, but at least one of the mouthpiece and the cooling unit may be provided in the flavor generating article 10. In that case, the mouthpiece 130 or the cooling unit 160 may be omitted from the flavor inhaler 100.

[0101] Next, the flavor source included in the flavor generating article 10 will be described in detail. FIG. 3 is a perspective view of the flavor source 50. FIG. 4 is a side view of the flavor source 50. As shown in FIG. 3, the flavor source 50 may be formed in the shape of a flat sheet as a whole. The flavor source 50 has a main surface 54, which is a flat surface having the largest area. The flavor generating article 10 may have a susceptor contained in a container 20 (see FIGS. 5A and 5B, etc.), which will be described later. In this case, the flavor source 50 can be heated by inductively heating the susceptor of the flavor generating article 10 using an induction coil provided in the flavor inhaler 100. Specifically, as shown in FIGS. 3 and 4, the flavor source 50 has a corrugated first susceptor-containing sheet 53 containing a susceptor material, and flat first and second sheets 51 and 52 arranged to sandwich the first susceptor-containing sheet 53. At least one of the first susceptor-containing sheet 53, the first sheet 51, and the second sheet 52 contains tobacco and generates vapor or aerosol when heated. In this embodiment, the first susceptor-containing sheet 53 has a sinusoidal cross section. However, the first susceptor-containing sheet 53 may have a wavy cross section of any shape, such as a rectangular wave, a triangular wave, or a sawtooth wave.

[0102] Specific examples of tobacco include shredded dried tobacco leaves, ground leaf tobacco, and tobacco extracts (extracts made from water, organic solvents, or a mixture thereof). Ground leaf tobacco is particles obtained by grinding leaf tobacco. The ground leaf tobacco can have an average particle size of, for example, 30 to 120 μm. Grinding can be performed using a known grinder, and can be either dry or wet grinding. Therefore, ground leaf tobacco is also referred to as leaf tobacco particles. In this embodiment, the average particle size is determined by a laser diffraction / scattering method, specifically, using a laser diffraction particle size distribution analyzer (e.g., Horiba, Ltd. LA-950). Furthermore, the type of tobacco is not limited, and flue-cured, Burley, Orient, native, and other Nicotiana tabacum and Nicotiana rustica varieties can be used. The amount of tobacco contained in the first susceptor-containing sheet 53, the first sheet 51, or the second sheet 52 is not particularly limited, but is preferably 1 to 80% by weight, more preferably 10 to 50% by weight.

[0103] When at least one of the first sheet 51 and the second sheet 52 contains tobacco, the tobacco may be supported on a sheet made of non-tobacco fibers, such as pulp fibers or nonwoven fabric. Alternatively, at least one of the first sheet 51 and the second sheet 52 may be formed from a tobacco sheet. Examples of the tobacco sheet that can be used include a paper-formed tobacco leaf sheet, a cast tobacco leaf sheet, and a rolled tobacco leaf sheet. The tobacco sheet may further contain an aerosol source. The type of aerosol source is not particularly limited, and extracts and / or their components from various natural products can be selected depending on the application. The aerosol source is preferably a polyhydric alcohol, such as glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.

[0104] According to the flavor source 50 shown in FIGS. 3 and 4 , gaps S1 and S2 through which vapor or aerosol generated from tobacco passes can be formed between the first susceptor-containing sheet 53 and the first sheet 51 and the second sheet 52, respectively. This allows the vapor or aerosol generated from tobacco to be efficiently delivered downstream. Furthermore, because the first susceptor-containing sheet 53 contains a susceptor material, tobacco can be heated without contacting a heat source with the flavor-generating article 10 containing the flavor source 50. Therefore, the gaps S1 and S2 are not crushed by contact of a heater or the like with the flavor-generating article 10, allowing stable delivery of vapor or aerosol. Furthermore, at least one of the first susceptor-containing sheet 53, the first sheet 51, and the second sheet 52 may contain an aerosol source. In this case, the amount of aerosol delivered to the user can be increased.

[0105] 3, the first susceptor-containing sheet 53 has a corrugated cross section with protrusions and recesses extending along the longitudinal direction d1. The first susceptor-containing sheet 53 can also be referred to as a ridged sheet as a whole.

[0106] At least one of the first sheet 51 and the second sheet 52 may be a non-tobacco sheet formed from a material other than tobacco. In this case, specifically, for example, at least one of the first sheet 51 and the second sheet 52 preferably includes paper or molded pulp. This allows the flavor source 50 to be formed to be lightweight, inexpensive, and sturdy. At least one of the first sheet 51 and the second sheet 52 may include tobacco. In this case, induction heating of the first susceptor-containing sheet 53 heats the tobacco contained in at least one of the first sheet 51 and the second sheet 52, and vapor or aerosol can be generated.

[0107] The first sheet 51 and the second sheet 52 may contain tobacco. In this case, when the first susceptor-containing sheet 53 is induction-heated, the tobacco contained in the first sheet 51 and the second sheet 52 is heated and vapor or aerosol is generated, thereby increasing the amount of flavor or aerosol. In this case, the first sheet 51 and the second sheet 52 may differ from each other in at least one of flavor, thickness, aerosol source content, and surface shape.

[0108] In this case, the thickness of each of the first sheet 51 and the second sheet 52 is preferably 0.25 mm or more and 4.0 mm or less. If the thickness of each of the first sheet 51 and the second sheet 52 is less than 0.25 mm, the amount of vapor or aerosol generated per unit area of ​​the sheet may be small. If the thickness of each of the first sheet 51 and the second sheet 52 is more than 4.0 mm, the size of the flavor source 50 becomes too large. In this case, it takes time to heat the first sheet 51 and the second sheet 52, which may result in a long time until the initial puff or an insufficient amount of vapor or aerosol delivered during the initial puff. Therefore, if the thickness of each of the first sheet 51 and the second sheet 52 is within the above-mentioned range, sufficient vapor or aerosol can be generated and the size of the flavor source 50 can be reduced.

[0109] The height h1 of the corrugated portion of the first susceptor-containing sheet 53 is preferably 0.2 mm or more and 2.0 mm or less. If the height h1 (see FIG. 4 ) of the corrugated portion is less than 0.2 mm, the gaps S1 and S2 between the first susceptor-containing sheet 53 and the first and second sheets 51 and 52 become too small, which may result in inefficient downstream delivery of the flavor or aerosol generated from the tobacco. Furthermore, in this case, the insulation provided by the gaps S1 and S2 between the first susceptor-containing sheet 53 and the first and second sheets 51 and 52 may be reduced. If the height h1 of the corrugated portion exceeds 2.0 mm, the size of the flavor source 50 becomes too large. Therefore, if the height h1 of the corrugated portion is within the above-mentioned range, the flavor or aerosol can be efficiently delivered and the size of the flavor source 50 can be reduced.

[0110] The width of the wave portion of the first susceptor-containing sheet 53 (i.e., the length between the crests of the waves) is preferably 0.2 mm or more and 2.0 mm or less. If this width is less than 0.2 mm, there is a risk of an undesired increase in suction resistance when an aerosol is passed through the waves and inhaled. If this width exceeds 2.0 mm, there is a risk of the strength of the flavor-generating article 10 being weakened. Therefore, if this width is within the above numerical range, the strength of the flavor-generating article 10 can be maintained while suppressing an undesired increase in suction resistance.

[0111] At least one of the first sheet 51 and the second sheet 52 may contain a fragrance. In this case, the fragrance can be supplied to the user in addition to the flavor or aerosol. The type of the fragrance is not particularly limited, and from the viewpoint of imparting a good fragrance sensation, examples thereof 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-citronellol, ... Lonnelol, clary sage extract, cocoa, coffee, konjac oil, coriander oil, cuminaldehyde, davanna oil, delta-decalactone, gamma-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-cyclohexadienyl)2-buten-4-one, 2,3,5-trimethylpyrazine, γ-undecalactone, γ-valerolactone, vanilla extract, vanillin, veratrol At least one of aldehydes, violet leaf absolute, N-ethyl-p-menthane-3-carboxamide (WS-3), ethyl-2-(p-menthane-3-carboxamide) acetate (WS-5), sugars (sucrose, fructose, etc.), cocoa powder, carob powder, coriander powder, licorice powder, orange peel powder, rose pip powder, chamomile flower powder, lemon verbena powder, peppermint powder, leaf powder, spearmint powder, black tea powder, natural plant flavors (e.g., jasmine oil, lemon oil, vetiver oil, lovage oil), and esters may be selected.

[0112] Furthermore, the first susceptor-containing sheet 53 may extend only partially in the longitudinal direction d1 or width direction d2 of the flavor source 50. In this case, the first susceptor-containing sheet 53 has a length or width that is shorter than the overall length or width of the flavor source 50. Therefore, the flavor source 50 does not need to be provided with a first susceptor-containing sheet 53 having a size similar to the overall size of the flavor source 50, and therefore only the necessary amount of first susceptor-containing sheet 53 for the flavor source 50 can be provided, thereby reducing the amount of susceptor material.

[0113] The flavor source 50 shown in Figures 3 and 4 may omit at least one of the first sheet 51 and the second sheet 52. For example, the flavor source 50 may be composed of only the first susceptor-containing sheet 53. The flavor source 50 shown in Figures 3 and 4 is in a sheet shape as a whole. However, the flavor source 50 may have any shape, such as a block shape, a sheet shape, a particle shape, or a paste shape. In this case, the flavor source 50 may be a porous body.

[0114] Fig. 5A is a schematic plan view of the flavor generating article 10 according to this embodiment. Fig. 5B is a schematic side view of the flavor generating article 10 according to this embodiment. As shown in Figs. 5A and 5B, the flavor generating article 10 includes a flavor source 50 as illustrated in Figs. 3 and 4 and a container 20 that accommodates the flavor source 50. The container 20 includes an air inlet 21 and an air outlet 22. The air inlet 21 communicates with the vent of the flavor inhaler 100 shown in Figs. 1 and 2 and is configured to take in air through the vent. The air outlet 22 communicates with the mouthpiece 130 of the flavor inhaler 100 and releases vapor or aerosol generated in the flavor source 50 to the mouthpiece 130. The container 20 includes a flavor source housing 25, and the flavor source 50 is housed in the flavor source housing 25.

[0115] In this embodiment, the width W1 and length L1 of the container 20 are at least twice the maximum thickness T1 of the container 20. The container 20 of this embodiment shown in Figures 5A and 5B has an overall flat shape. Here, the length L1 refers to the length along the longitudinal direction of the container 20. The length L1 of the container 20 may be at least the width W1 of the container 20. In this case, the flavor-generating article 10 can have a shape different from that of a conventional cylindrical tobacco stick.

[0116] The container 20 of the flavor generating article 10 may be flexible. The width W1 of the container 20 of the flavor generating article 10 may be greater than the width of the storage section of the flavor inhaler 100. In this case, when the flavor generating article 10 is stored in the storage section of the flavor inhaler 100, the flavor generating article 10 may be compressed in the width direction by the storage section. The air inlet 21 and the air outlet 22 of the flavor generating article 10 may be closed in advance, or the flavor generating article 10 may be configured so that the air inlet 21 and the air outlet 22 are opened when the flavor generating article 10 is stored in the storage section and compressed in the width direction.

[0117] As shown, the flavor-generating article 10 has a first air flow path 24 extending between the air outlet 22 and the flavor source 50 and a second air flow path 23 extending between the air inlet 21 and the flavor source 50. In the illustrated embodiment, the length of the first air flow path 24 between the air outlet 22 and the flavor source 50 is equal to or greater than the length of the second air flow path 23 between the air inlet 21 and the flavor source 50, and the length of the second air flow path 23 is greater than zero. In this case, compared to when the length of the first air flow path 24 is shorter than the length of the second air flow path 23, leakage of vapor or aerosol generated in the flavor source 50 from the first air flow path 24 can be suppressed when the flavor source 50 is heated while the user is not smoking. Furthermore, compared to when the length of the first air flow path 24 is shorter than the length of the second air flow path 23, the vapor or aerosol generated in the flavor source 50 can be cooled more effectively in the first air flow path 24. The flavor source 50 has an air inlet 50a communicating with the second air flow path 23 and an air outlet 50b communicating with the first air flow path 24. The first air flow path 24 and the air outlet 22 may function as a cooling section and a mouthpiece, respectively, of the flavor-generating article 10. In that case, the cooling section 160 or the mouthpiece 130 may be omitted from the flavor inhaler 100 shown in FIG.

[0118] As shown in FIG. 5A , the flow area of ​​the flavor source 50 is preferably larger than the flow area of ​​the first air flow path 24. In this case, since the flow area of ​​the first air flow path 24 is relatively small, leakage of vapor or aerosol generated in the flavor source 50 from the first air flow path 24 can be suppressed when the flavor source 50 is heated while the user is not smoking. Furthermore, the flavor source 50 can be prevented from falling off the flavor-generating article through the first air flow path. The flow area of ​​the flavor source 50 refers to, for example, the cross-sectional area perpendicular to a line connecting the shortest distance between the air inlet point and the air outlet point of the flavor source 50. In the example shown in FIG. 5A , the flow area of ​​the flavor source 50 refers to the cross-sectional area of ​​the flavor source 50 perpendicular to the longitudinal direction. The flow area of ​​the first air flow path 24 refers to the cross-sectional area perpendicular to the air flow direction of the first air flow path 24. The length of the flavor source 50 along the longitudinal direction (length L1 direction) may be greater or smaller than the length along the width direction (width W1 direction).

[0119] 5A , the flow area of ​​the flavor source 50 is preferably larger than the flow area of ​​the second air flow path 23. In this case, since the flow area of ​​the second air flow path 23 is relatively small, when the flavor source 50 is heated while the user is not smoking, it is possible to prevent the vapor or aerosol generated in the flavor source 50 from leaking from the second air flow path 23. In addition, it is possible to prevent the flavor source 50 from falling out of the flavor-generating article 10 through the second air flow path 23.

[0120] 5A , the first air flow path 24 preferably includes a first flow path portion 24a having a substantially constant width and a second flow path portion 24b that connects the flavor source 50 and the first flow path portion 24a and narrows in width toward the downstream side. In this case, the second flow path portion 24b, which narrows in width toward the downstream side, is provided between the flavor source 50 and the first flow path portion 24a, allowing the vapor or aerosol from the flavor source 50 to be smoothly delivered to the first flow path portion 24a. Furthermore, the provision of the second flow path portion 24b allows the flow path width to be narrowed toward the downstream side, so the flow path width of the first air flow path 24 can be reduced even when the flavor source 50 is relatively wide. As a result, leakage of the vapor or aerosol generated by the flavor source 50 from the first air flow path 24 can be suppressed.

[0121] The first air flow path 24 may have a known filter, such as a paper filter or an acetate filter, disposed therein, or may be a hollow flow path. The first air flow path 24 may also communicate with an opening that takes in air from the outside. To promote cooling, the first air flow path 24 may be filled with or have disposed therein one or more materials selected from the group consisting of polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polylactic acid, cellulose acetate, and aluminum foil.

[0122] The width of the upstream end of the second flow path section 24b may be substantially equal to or smaller than the width of the flavor source 50. Furthermore, the width of the downstream end of the second flow path section 24b may be substantially equal to the width of the first flow path section 24a. In this case, there is substantially no difference in width between the second flow path section 24b and the first flow path section 24a, so that pressure loss at the boundary between the second flow path section 24b and the first flow path section 24a can be suppressed. Furthermore, when the width of the upstream end of the second flow path section 24b is substantially equal to the width of the flavor source 50, pressure loss at the boundary between the flavor source 50 and the second flow path section 24b can be suppressed.

[0123] 5A , the width of the second air flow path 23 preferably increases downstream. In this case, the air from the air inlet 21 passes through the second air flow path 23, allowing the air to be diffused in the width direction, thereby allowing the air to be supplied to a wider range of the flavor source 50.

[0124] The width of the upstream end of the second air flow path 23 may be substantially equal to the width of the air inlet 21. Furthermore, the width of the downstream end of the second air flow path 23 may be substantially equal to or smaller than the width of the flavor source 50. In this case, there is substantially no difference in width between the air inlet 21 and the second air flow path 23, which can prevent pressure loss at the boundary between the air inlet 21 and the second air flow path 23. Furthermore, when the width of the downstream end of the second air flow path 23 is substantially equal to the width of the flavor source 50, it can prevent pressure loss at the boundary between the second air flow path 23 and the flavor source 50.

[0125] 5A, it is preferable that the first air flow path 24 and the second air flow path 23 are positioned on substantially the same axis. In other words, it is preferable that the first air flow path 24 and the second air flow path 23 do not deviate from substantially the same axis over their entire lengths. In this case, the air flow path including the second air flow path 23 and the first air flow path 24 is prevented from curving, which can prevent an increase in suction resistance or pressure loss.

[0126] As shown in FIG. 5B , the container 20 may have a first member 20a and a second member 20b. The second member 20b is directly or indirectly joined to the first member 20a. In this case, the flavor source 50 can be easily accommodated in the container by sandwiching it between the first member 20a and the second member 20b. Specifically, the first member 20a and the second member 20b face each other with the flavor source 50 positioned therebetween. The container 20 has a joint portion 27a (hatched portion in the figure) where the first member 20a and the second member 20b are joined, and a non-joint portion 27b where the first member 20a and the second member 20b are not joined. The first member 20a and the second member 20b can be joined to each other by a known method, such as adhesive, heat sealing, or welding. The joint portion 27a is configured to prevent air and the like from passing through. The non-bonded portion 27b forms a space between the first member 20a and the second member 20b. Therefore, the second air flow path 23, the first air flow path 24, and the flavor source storage portion 25 are each part of the space between the first member 20a and the second member 20b formed by the non-bonded portion 27b.

[0127] 5B , thicknesses T1 and T2 of the container 20 in the portions where the flavor source 50, the first air flow path 24, or the second air flow path 23 are located may be greater than thickness T3 of the container 20 in the portions where the flavor source 50, the first air flow path 24, and the second air flow path 23 are not located. In this case, thickness T3 of the container 20 in the portions where the flavor source 50, the first air flow path 24, and the second air flow path 23 are not located can be made relatively small, allowing the overall size of the container 20 to be made compact.

[0128] As shown in FIG. 5B , the container 20 has a joining surface 27c between the first member 20a and the second member 20b. The first member 20a or the second member 20b in the portion where the flavor source 50, the first air flow path 24, or the second air flow path 23 is located (i.e., the non-jointed portion 27b) may protrude toward the first member 20a or the second member 20b from the joining surface 27c. In this case, the first member 20a or the second member 20b has a recess in relation to the joining surface 27c, and this recess can function as a space (flavor source storage portion 25) where the flavor source 50 is disposed or as an air flow path. In the example shown in FIG. 5B , both the first member 20a and the second member 20b protrude toward the first member 20a and the second member 20b, respectively, from the joining surface 27c. In the illustrated example, the height of the first air flow path 24, the second air flow path 23, or the flavor source 50 protruding toward the first member 20a is the same as the height of the first air flow path 24, the second air flow path 23, or the flavor source 50 protruding toward the second member 20b. That is, the first member 20a and the second member 20b are symmetrical with respect to the joining surface 27c. However, the height of the first air flow path 24, the second air flow path 23, or the flavor source 50 protruding toward the first member 20a may be lower or higher than the height of the first air flow path 24, the second air flow path 23, or the flavor source 50 protruding toward the second member 20b.

[0129] 5A , the container 20 has a first end 30a and a second end 30b that face each other in a first direction, and a third end 30c and a fourth end 30d that face each other in a second direction perpendicular to the first direction. At least one end of the first member 20a and at least one end of the second member 20b are joined to each other at the first end 30a to form a first flange portion 31a. In this embodiment, the first direction corresponds to the longitudinal direction, and the second direction corresponds to a direction perpendicular to the longitudinal direction. However, the first direction is not limited thereto, and may be any direction.

[0130] As described above, in this embodiment, the width W1 and length L1 of the container 20 are at least twice the maximum thickness T1 of the container 20, so the flavor generating article 10 can have a nearly flat shape overall. In this way, even if the flavor generating article 10 has a special shape, the user can grasp the first flange portion 31a, making it easy to handle the flavor generating article 10. In particular, when the flavor generating article 10 is partially heated, such as when removing the flavor generating article 10 from the flavor inhaler 100 after use, the user can handle the flavor generating article 10 more safely. Furthermore, when the flavor generating article 10 is placed in the recess of the flavor inhaler 100, the first flange portion 31a may come into contact with the wall portion defining the recess of the flavor inhaler 100. At this time, the first flange portion 31a bends, and the flavor generating article 10 is biased by the wall portion, thereby positioning the flavor generating article 10. The first member 20a and the second member 20b may be integrally formed at one end thereof. That is, for example, a single member may be folded to form a portion corresponding to the first member 20a and a portion corresponding to the second member 20b facing the first member 20a.

[0131] 5A, at least one end of the first member 20a and at least one end of the second member 20b may be joined to each other at a second end 30b to form a second flange portion 31b. In this case, the user can grasp the second flange portion 31b, making it easier to handle the flavor-generating article 10.

[0132] 5A , at least one end of the first member 20 a and at least one end of the second member 20 b may be joined to each other at a third end 30 c to form a third flange portion 31 c, which allows a user to grasp the third flange portion 31 c, making it easier to handle the flavor-generating article 10.

[0133] 5A, at least one end of first member 20a and at least one end of second member 20b may be joined to each other at fourth end 30d to form fourth flange 31d, which allows a user to grasp fourth flange 31d, making handling of the flavor-generating article even easier.

[0134] The first flange portion 31a preferably protrudes in a direction away from the flavor source 50. More specifically, as shown in Fig. 5A, the first flange portion 31a preferably protrudes along the longitudinal direction so as to be away from the flavor source 50. In this case, the first flange portion 31a protrudes toward the outside of the flavor-generating article 10, allowing a user to easily grasp the first flange portion 31a. Similarly, at least one of the second flange portion 31b, the third flange portion 31c, and the fourth flange portion 31d preferably protrudes in a direction away from the flavor source 50.

[0135] The first flange portion 31a preferably extends over the entire length of the container 20 in the second direction (in the present embodiment, the width direction perpendicular to the longitudinal direction). In this case, the area of ​​the first flange portion 31a that can be grasped by the user is increased, making it easier to handle the flavor-generating article 10. However, in this case, it becomes difficult to form the air outlet 22 at the first end 30a as in the present embodiment, so it is preferable to form the air outlet 22 at a portion other than the first end 30a. Similarly, the second flange portion 31b preferably extends over the entire length of the container 20 in the second direction. In this case, it becomes difficult to form the air inlet 21 at the second end 30b as in the present embodiment, so it is preferable to form the air inlet 21 at a portion other than the second end 30b. At least one of the third flange portion 31c and the fourth flange portion 31d preferably extends over the entire length of the container 20 in the first direction (in the present embodiment, the longitudinal direction).

[0136] The ratio of the length of the joint 27a between the first member 20a and the second member 20b in the first direction to the length of the container 20 excluding the joint 27a in the first direction is preferably 0.1 or more and 0.3 or less. Here, the "first direction" may refer to any direction in which the joint 27a (flange portion) extends. That is, in any direction, the ratio of the length of the joint 27a to the length of the container 20 excluding the joint 27a in that direction (i.e., the non-joint portion 27b) is preferably 0.1 or more and 0.3 or less. If the ratio is less than 0.1, the length of the joint 27a relative to the overall length of the container 20 becomes shorter, making it difficult for the user to grasp the joint 27a. On the other hand, if the ratio is greater than 0.3, the length of the joint 27a relative to the overall length of the container 20 becomes longer, increasing the overall size of the container 20. Therefore, in the above case, the user can easily grasp the joint 27a and the overall size of the container 20 can be prevented from increasing.

[0137] At least one of the first member 20a and the second member 20b is preferably concave. In this case, the flavor source 50 can be placed in the concave portion of at least one of the first member 20a and the second member 20b, making it easy to position the flavor source 50 relative to the container 20. As shown in Fig. 5B , in this embodiment, a portion of each of the first member 20a and the second member 20b is formed concave, and the first member 20a and the second member 20b define the flavor source storage section 25. For example, by forming one of the first member 20a and the second member 20b concave and the other flat, a container 20 consisting of a concave member and a flat member can be formed.

[0138] The first member 20 a and the second member 20 b may be formed of different materials. In this case, appropriate materials can be used for the first member 20 a and the second member 20 b, allowing for greater flexibility in the design of the container 20 of the flavor-generating article 10.

[0139] Furthermore, the container 20 may be formed of paper. Specifically, the first member 20a and the second member 20b may be formed of paper. In this case, the container 20 can be manufactured inexpensively and easily. More specifically, the container 20 may be formed of a pulp mold. The container 20 may be formed of an air-impermeable material. Here, an air-impermeable material refers to a material having an air permeability of 0 CU when measured in accordance with ISO 2965-1997. More specifically, the container 20 may be formed of air-impermeable paper. More specifically, the first member 20a and the second member 20b may be formed of air-impermeable paper. In this case, it is possible to prevent vapor or aerosol generated from the flavor source 50 from leaking from unintended portions of the container 20.

[0140] The container 20 may have a water-resistant coating on at least one of its inner and outer surfaces. Specifically, at least one of the first member 20a and the second member 20b may have a water-resistant coating on at least one of its inner and outer surfaces. In this case, it is possible to prevent moisture from penetrating the flavor source 50 in the container 20.

[0141] The air inlet 21 and the air outlet 22 may be defined by the first member 20a and the second member 20b. In this case, when joining the first member 20a and the second member 20b, a non-jointed portion (non-jointed portion 27b) may be formed to form the air inlet 21 and the air outlet 22. Alternatively, the air inlet 21 or the air outlet 22 may be formed by forming a through hole in the first member 20a or the second member 20b.

[0142] 5A has a single air outlet 22 and a single first air flow path 24. However, the flavor generating article 10 may have multiple air outlets 22 and multiple first air flow paths 24 between the multiple air outlets 22 and the flavor source 50. In this case, the contact area between the vapor or aerosol generated in the flavor source 50 and the wall surface of the container 20 that defines the multiple first air flow paths 24 can be increased, thereby improving the efficiency of cooling the vapor or aerosol.

[0143] In the flavor-generating article 10 shown in FIG. 5B , the first member 20a and the second member 20b are directly bonded to each other at the bonding surface 27c. However, the first member 20a and the second member 20b may be bonded to each other via a spacer. In this case, the container 20 may have a substantially uniform thickness as a whole. Specifically, by preparing the first member 20a and the second member 20b that are generally flat and placing a spacer corresponding to the thicknesses of the flavor source storage section 25, the second air flow path 23, and the first air flow path 24 between the first member 20a and the second member 20b at the bonding portion 27a, the container 20 will have a substantially uniform thickness as a whole. This makes it easier to handle the flavor-generating article 10.

[0144] The flavor source 50 may be adhered to the container 20. In this case, the flavor source 50 can be easily positioned and fixed to the container 20. Alternatively, if the flavor source 50 is in a paste form, the flavor source 50 may be applied to the container 20.

[0145] At least one of the first member 20a and the second member 20b may have a recess in advance that defines at least one of the first air flow path 24 and the second air flow path 23 before being joined together. In this case, because the recess is formed in advance, it is not necessary to form the first air flow path 24 or the second air flow path 23 when joining the first member 20a and the second member 20b. Therefore, the precision of the first air flow path 24 or the second air flow path 23 can be improved compared to when the first air flow path 24 or the second air flow path 23 is formed when joining the first member 20a and the second member 20b.

[0146] 5A and 5B , a method for manufacturing the flavor-generating article 10 will be described. As described above, the flavor-generating article 10 includes a flavor source 50 and a container 20 that accommodates the flavor source 50. The container 20 has a first end 30a and a second end 30b that face each other in a first direction, and a third end 30c and a fourth end 30d that face each other in a second direction perpendicular to the first direction. The width and length of the container 20 are at least twice the maximum thickness of the container 20. This manufacturing method includes first placing the flavor source 50 on a first member 20a. Next, the second member 20b is placed so that the flavor source 50 is positioned between the first member 20a and the second member 20b, and joining at least one end of the first member 20a and at least one end of the second member 20b to each other at the first end 30a. In this case, a first flange 31a that can be gripped by a user can be formed on the first end 30a of the container 20. This makes it possible to manufacture an easy-to-handle flavor-generating article 10. Similarly, at least one end of the first member 20a and at least one end of the second member 20b may be joined to each other at at least one of the second end 30b, the third end 30c, and the fourth end 30d.

[0147] After the first member 20a and the second member 20b are joined together, a portion of the joint 27a may be cut away, thereby forming the container 20 into a desired shape.

[0148] Another embodiment of the flavor generating article 10 will now be described. Fig. 6A is a schematic perspective view of the flavor generating article 10 according to another embodiment. Fig. 6B is a schematic plan view of the flavor generating article 10 according to another embodiment. In the flavor generating article 10 shown in Figs. 6A and 6B, a first flange portion 31a is formed at a first end 30a, a second end 30b is formed at a second end 30b, an air inlet 21 is formed at a third end 30c, and an air outlet 22 is formed at a fourth end 30d.

[0149] As shown, substantially no second air flow path 23 is formed between the air inlet 21 and the flavor source 50. On the other hand, a first air flow path 24 having substantially the same cross-sectional shape as the cross-sectional shape of the flavor source 50 is provided between the air outlet 22 and the flavor source 50. In addition, in the illustrated embodiment, no flange portions are formed at the third end 30c and the fourth end 30d, and the air inlet 21 and the air outlet 22 are formed over substantially the entirety of each end. In other words, the flavor-generating article 10 shown in Figures 5A and 5B has a four-sided seal, while the flavor-generating article 10 shown in Figures 6A and 6B has a two-sided seal.

[0150] 6A and 6B, the thickness of the portion of the container 20 corresponding to the flavor source storage portion 25 and the thickness of the portion corresponding to the first air flow path 24 are formed to be substantially the same. That is, the thickness of the non-jointed portion 27b is formed to be approximately uniform as a whole. In contrast, the thickness of the joint portion 27a including the first flange portion 31a and the second flange portion 31b is thinner than the thickness of the non-jointed portion 27b.

[0151] Fig. 7 is a schematic plan view of a flavor-generating article 10 according to another embodiment. The flavor-generating article 10 shown in Fig. 7 differs from the flavor-generating article 10 shown in Figs. 5A and 5B in that the second air flow path 23 is longer. That is, in the flavor-generating article 10 shown in Fig. 7, the length of the first air flow path 24 between the air outlet 22 and the flavor source 50 is shorter than the length of the second air flow path 23 between the air inlet 21 and the flavor source 50. In this case, compared to when the length of the first air flow path 24 is longer than the length of the second air flow path 23, leakage of vapor or aerosol generated in the flavor source from the second air flow path 23 when the flavor source 50 is heated while the user is not smoking can be suppressed.

[0152] In the flavor-generating article 10 shown in FIG. 7 , the second air flow path 23 preferably includes a third flow path portion 23a having a substantially constant width and a fourth flow path portion 23b that connects the air inlet 50a of the flavor source 50 to the third flow path portion 23a and narrows in width toward the upstream side. In this case, the fourth flow path portion 23b, which narrows in width toward the upstream side, is provided between the flavor source 50 and the third flow path portion 23a. This allows the flow path width of the second air flow path 23 to be small even when the flavor source 50 is relatively wide. As a result, leakage of vapor or aerosol generated by the flavor source 50 from the second air flow path 23 can be suppressed. In the illustrated example, the second air flow path 23 extends along the longitudinal direction, and the first air flow path 24 and the second air flow path 23 are positioned on substantially the same axis. However, the second air flow path 23 may have any flow path shape that is longer than the first air flow path 24.

[0153] Fig. 8 is a schematic plan view of a flavor-generating article 10 according to another embodiment. The flavor-generating article 10 shown in Fig. 8 differs from the flavor-generating article 10 shown in Fig. 7 in the shape of the second air flow path 23 and the position of the air inlet 21. Specifically, in the flavor-generating article 10 shown in Fig. 8, the air outlet 22 is provided at the first end 30a, and the air inlet 21 is provided closer to the first end 30a than the air inlet 50a of the flavor source 50. In this case, air flowing in from the air inlet 21 of the container 20 flows toward the second end 30b, into the air inlet 50a of the flavor source 50, and then flows into the air outlet 22 provided at the first end 30a. In other words, the air flowing in from the air inlet 21 flows from the first end 30a toward the second end 30b and then back toward the first end 30a. Therefore, the flavor-generating article 10 has a so-called counterflow air flow path. Therefore, in this case, leakage of the vapor or aerosol generated in the flavor source 50 from the second air flow path 23 and the air inlet 21 can be further suppressed.

[0154] As shown, the container 20 may have two air inlets 21 and two second air flow paths 23 between the two air inlets 21 and the flavor source 50. In this case, even if one of the air inlets 21 or second air flow paths 23 is blocked, air can be supplied to the flavor source 50 from the other air inlet 21 or second air flow path 23.

[0155] As shown in the figure, the first air flow path 24 and the second air flow path 23 preferably overlap in the first direction (the longitudinal direction in the illustrated example) connecting the first end 30a and the second end 30b. In other words, the first air flow path 24 and the second air flow path 23 preferably overlap in the first direction. When the first air flow path 24 and the second air flow path 23 do not overlap in the first direction, as in the flavor-generating article 10 shown in FIG. 7 , the length of the container 20 in the first direction may be increased. Therefore, the flavor-generating article 10 shown in FIG. 8 can shorten the length of the container 20 in the first direction while ensuring the lengths of the first air flow path 24 and the second air flow path 23, compared to when the first air flow path 24 and the second air flow path 23 do not overlap in the first direction.

[0156] Furthermore, as shown in the figure, when the first air flow path 24 and the second air flow path 23 overlap in the first direction, it is preferable that the first air flow path 24 and the second air flow path 23 are not short-circuited. Therefore, the container 20 and the flavor source 50 are preferably configured to partition the first air flow path 24 and the second air flow path 23 so that the first air flow path 24 and the second air flow path 23 do not directly communicate with each other. In other words, the container 20 and the flavor source 50 preferably seal the first air flow path 24 and the second air flow path 23 so that the first air flow path 24 and the second air flow path 23 do not directly communicate with each other. In this case, it is possible to prevent air flowing in from the air inlet 21 and passing through the second air flow path 23 from passing through the first air flow path 24 without passing through the flavor source 50 and reaching the air outlet 22. As a result, the vapor or aerosol generated in the flavor source 50 can be more reliably delivered to the air outlet 22.

[0157] The flavor source 50 is preferably sealed by the container 20 except for the portions communicating with the first air flow path 24 and the second air flow path 23. Specifically, the flavor source 50 may be sealed by the container 20 so that air does not flow in or out from portions of the flavor source 50 except for the air inlet 50a and the air outlet 50b. In this case, it is possible to prevent the vapor or aerosol generated in the flavor source 50 from leaking from portions of the flavor source 50 other than the portions communicating with the first air flow path 24 and the second air flow path 23. However, the portions of the flavor source 50 except for the air inlet 50a and the air outlet 50b may be sealed by a member other than the container 20.

[0158] 8, a portion of the second air flow path 23 may be located to the side of the flavor source 50. In other words, a portion of the second air flow path 23 may be adjacent to the flavor source 50 in the width direction. In this case, it is preferable that the space between the second air flow path 23 and the flavor source 50 is sealed by the container 20. This allows a portion of the second air flow path 23 to pass by the side of the flavor source 50 before flowing into the flavor source 50, thereby ensuring the length of the second air flow path 23.

[0159] At least one of the first air flow path 24 and the second air flow path 23 may be at least partially defined by the container 20 and the flavor source 50. In the example shown in Figure 8, a portion of the second air flow path 23 is defined by the container 20 and the flavor source 50. In this case, since the flavor source 50 is used to partially define at least one of the first air flow path 24 and the second air flow path 23, the amount of material in the container 20 can be reduced compared to when at least one of the first air flow path 24 and the second air flow path 23 is defined by the container 20 alone.

[0160] Fig. 9 is a schematic plan view of a flavor-generating article 10 according to another embodiment. The flavor-generating article 10 shown in Fig. 9 differs from the flavor-generating article 10 shown in Fig. 7 in the shape of the second air flow path 23 and the position of the air inlet 21. Specifically, in the flavor-generating article 10 shown in Fig. 8, the air outlet 22 is provided at the first end 30a, and the air inlet 21 is provided closer to the first end 30a than the air inlet 50a of the flavor source 50. Furthermore, the second air flow path 23 passes over the surface of the flavor source 50 other than the air inlet 50a and the air outlet 50b, and communicates with the air inlet 50a. In this case, an air layer is formed on the surface of the flavor source 50, thereby suppressing heat transfer from the flavor source 50 to the outside of the container 20.

[0161] Specifically, the second air flow path 23 preferably passes over the main surface 54 (see FIG. 3 ) of the flavor source 50 and communicates with the air inlet 50a. In this case, an air layer is formed on the main surface 54 of the flavor source 50, ensuring a large area for the air layer and further suppressing the transfer of heat from the flavor source 50 to the outside of the container 20. In the illustrated example, the second air flow path 23 surrounds the flavor source 50 in a substantially spiral shape and communicates with the air inlet 50a of the flavor source 50. However, the second air flow path 23 may pass over only one main surface 54 of the flavor source 50, for example.

[0162] 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 concept described in the specification and drawings. Furthermore, any shape or material not directly described in the specification and drawings is within the scope of the technical concept of the present invention as long as it achieves the functions and effects of the present invention. For example, the second air flow path 23 may be provided with a member such as a filter that allows air to pass through and can filter aerosols.

[0163] Some of the aspects disclosed in this specification are described below. (1) A flavor generating article comprising: a flavor source; and a container that accommodates the flavor source, wherein the container has an air inlet and an air outlet, the width and length of the container are at least twice the maximum thickness of the container, the length of a first air flow path between the air outlet and the flavor source is at least twice the length of a second air flow path between the air inlet and the flavor source, and the length of the second air flow path is greater than zero. (2) The flavor generating article described in (1), wherein the flow path area of ​​the flavor source is greater than the flow path area of ​​the first air flow path. (3) The flavor generating article described in (1) or (2), wherein the flow path area of ​​the flavor source is greater than the flow path area of ​​the second air flow path. (4) The flavor generating article according to any one of (1) to (3), wherein the first air flow path has a first flow path portion having a substantially constant width and a second flow path portion that connects the flavor source and the first flow path portion and whose width narrows toward downstream. (5) The flavor generating article according to (4), wherein the width of the upstream end of the second flow path portion is substantially equal to or smaller than the width of the flavor source, and the width of the downstream end of the second flow path portion is substantially equal to the width of the first flow path portion. (6) The flavor generating article according to any one of (1) to (5), wherein the width of the second air flow path increases toward downstream. (7) The flavor generating article according to (6), wherein the width of the upstream end of the second air flow path is substantially equal to the width of the air inlet, and the width of the downstream end of the second air flow path is substantially equal to or smaller than the width of the flavor source. (8) The flavor generating article according to any one of (1) to (7), wherein the first air flow path and the second air flow path are positioned on substantially the same axis. (9) The flavor generating article according to any one of (1) to (8), wherein the flavor source is in a block, sheet, particle, or paste form. (10) The flavor generating article according to any one of (1) to (9), wherein the flavor generating article has a plurality of the air outlets and a plurality of the first air flow paths between the plurality of the air outlets and the flavor source.(11) The flavor generating article according to any one of (1) to (10), wherein the thickness of the container at a portion where the flavor source, the first air flow path, or the second air flow path is located is greater than the thickness of the container at a portion where the flavor source, the first air flow path, and the second air flow path are not located. (12) The flavor generating article according to (11), wherein the container has a first member and a second member directly or indirectly joined to the first member. (13) The flavor generating article according to (12), wherein the container has a joining surface between the first member and the second member, and the first member or the second member at a portion where the flavor source, the first air flow path, or the second air flow path is located protrudes toward the first member or the second member beyond the joining surface. (14) The flavor generating article according to (12), wherein the first member and the second member are joined to each other via a spacer, and the container has a substantially uniform thickness as a whole. (15) The flavor generating article according to any one of (1) to (14), wherein the length of the container is equal to or greater than the width of the container. (16) A flavor generating product comprising: a flavor source; and a container for accommodating the flavor source, wherein the width and length of the container are at least twice the maximum thickness of the container, wherein the container has a first member, a second member joined to the first member, a first end and a second end facing each other in a first direction, and a third end and a fourth end facing each other in a second direction perpendicular to the first direction, wherein the first member and the second member face each other with the flavor source located therebetween, and wherein at least one end of the first member and at least one end of the second member are joined to each other at the first end to form a first flange portion. (17) A flavor generating product according to (16), wherein at least one end of the first member and at least one end of the second member are joined to each other at the second end to form a second flange portion.(18) The flavor generating article according to (16) or (17), wherein at least one end of the first member and at least one end of the second member are joined to each other at the third end to form a third flange portion. (19) The flavor generating article according to any of (16) to (18), wherein at least one end of the first member and at least one end of the second member are joined to each other at the fourth end to form a fourth flange portion. (20) The flavor generating article according to any of (16) to (19), wherein the first flange portion protrudes in a direction away from the flavor source. (21) The flavor generating article according to any of (16) to (20), wherein the first flange portion extends over the entire length of the container in the second direction. (22) The flavor generating article according to any one of (16) to (21), wherein the ratio of the length of the joint between the first member and the second member in the first direction to the length of the container excluding the joint in the first direction is 0.1 or more and 0.3 or less. (23) The flavor generating article according to any one of (16) to (22), wherein at least one of the first member and the second member is concave. (24) The flavor generating article according to any one of (16) to (23), wherein the first member and the second member are formed of different materials. (25) The flavor generating article according to any one of (16) to (24), wherein the first member and the second member are formed of paper. (26) The flavor generating article according to (25), wherein the first member and the second member are formed of air-impermeable paper. (27) The flavor generating article according to any one of (16) to (26), wherein at least one of the first member and the second member has a water-resistant coating on at least one of the inner surface and the outer surface. (28) The flavor generating article according to any one of (16) to (27), wherein the flavor source is in the form of a block, a sheet, particles, or a paste.(29) The flavor generating article according to any one of (16) to (28), comprising a susceptor housed in the container. (30) The flavor generating article according to any one of (16) to (29), comprising the container having an air inlet and an air outlet, the air inlet and the air outlet being defined by the first member and the second member. (31) A method for manufacturing a flavor generating article comprising: a flavor source; and a container for accommodating the flavor source, the container having a first end and a second end facing each other in a first direction and a third end and a fourth end facing each other in a second direction perpendicular to the first direction, wherein the width and length of the container are at least twice the maximum thickness of the container, the method comprising: placing the flavor source on the first member; placing the second member such that the flavor source is located between the first member and the second member; and joining at least one end of the first member and at least one end of the second member to each other at the first end. (32) A flavor generating article comprising: a flavor source; and a container for accommodating the flavor source, the container having an air inlet and an air outlet, the width and length of the container being at least twice the maximum thickness of the container, and a length of a first air flow path between the air outlet and the flavor source being shorter than a length of a second air flow path between the air inlet and the flavor source. (33) The flavor generating article according to (32), wherein the flavor source has an air inlet and an air outlet, and the second air flow path passes over a surface of the flavor source other than the air inlet and the air outlet to communicate with the air inlet. (34) The flavor generating article according to (33), wherein the flavor source has a main surface, and the second air flow path passes over the main surface of the flavor source to communicate with the air inlet. (35) The flavor generating article according to any of (32) to (34), wherein the container has a first end and a second end opposite to the first end, the air outlet is provided at the first end, and the air inlet is provided closer to the first end than the air inlet of the flavor source.(36) The flavor generating article according to any one of (32) to (35), wherein the container has two of the air inlets and two of the second air flow paths between the two air inlets and the flavor source. (37) The flavor generating article according to any one of (32) to (36), wherein the container has a first end and a second end opposite to the first end, and the first air flow path and the second air flow path overlap in a first direction connecting the first end and the second end. (38) The flavor generating article according to any one of (32) to (37), wherein the container and the flavor source are configured to partition the first air flow path and the second air flow path so that the first air flow path and the second air flow path do not directly communicate with each other. (39) The flavor generating article according to any one of (32) to (38), wherein the flavor source is sealed by the container except for a portion communicating with the first air flow path and the second air flow path. (40) The flavor generating article according to any one of (32) to (39), wherein a portion of the second air flow path is located to the side of the flavor source, and wherein the container seals the space between the second air flow path and the flavor source. (41) The flavor generating article according to any one of (32) to (40), wherein the flavor source is adhered to the container. (42) The flavor generating article according to any one of (32) to (41), wherein the container has a first member and a second member joined to the first member, and at least one of the first member and the second member has a recess that defines at least one of the first air flow path and the second air flow path before being joined to each other. (43) The flavor generating article according to any one of (32) to (42), wherein at least one of the first air flow path and the second air flow path is at least partially defined by the container and the flavor source.

[0164] DESCRIPTION OF SYMBOLS 10: Flavor-generating article 20: Container 20a: First member 20b: Second member 21: Air inlet 22: Air outlet 23: Second air flow path 24: First air flow path 24a: First flow path section 24b: Second flow path section 27a: Joint section 27c: Joint surface 30a: First end 30b: Second end 30c: Third end 30d: Fourth end 31a: First flange section 31b: Second flange section 31c: Third flange section 31d: Fourth flange section 50: Flavor source 50a: Air inlet 50b: Air outlet 54: Main surface T1: Maximum thickness T2, T3: Thickness W1: Width d1: Longitudinal direction d2 :Width direction

Claims

1. A flavor generating article comprising: a flavor source; and a container for housing the flavor source, the container having an air inlet and an air outlet, the width and length of the container being at least twice the maximum thickness of the container, and the length of a first air flow path between the air outlet and the flavor source being shorter than the length of a second air flow path between the air inlet and the flavor source.

2. A flavor generating article as described in claim 1, wherein the flavor source has an air flow inlet and an air flow outlet, and the second air flow path passes over a surface of the flavor source other than the air flow inlet and the air flow outlet and communicates with the air flow inlet.

3. A flavor generating article as described in claim 2, wherein the flavor source has a main surface, and the second air flow passage passes over the main surface of the flavor source and communicates with the air inlet.

4. A flavor generating article as described in any one of claims 1 to 3, wherein the container has a first end and a second end opposite the first end, the air outlet is provided at the first end, and the air inlet is provided on the first end side relative to an air flow inlet of the flavor source.

5. A flavor generating article as claimed in any one of claims 1 to 4, wherein the container has two of the air inlets and two of the second air flow paths between the two air inlets and the flavor source.

6. A flavor generating article as described in any one of claims 1 to 5, wherein the container has a first end and a second end opposite the first end, and the first air flow path and the second air flow path overlap in a first direction connecting the first end and the second end.

7. A flavor generating article as described in any one of claims 1 to 6, wherein the container and the flavor source are configured to separate the first air flow path and the second air flow path so that the first air flow path and the second air flow path are not in direct communication with each other.

8. A flavor generating article according to any one of claims 1 to 7, wherein the flavor source is sealed by the container except for a portion communicating with the first air flow path and the second air flow path.

9. A flavor generating article according to any one of claims 1 to 8, wherein a portion of the second air flow path is located to the side of the flavor source, and the space between the second air flow path and the flavor source is sealed by the container.

10. The flavor generating article according to any one of claims 1 to 9, wherein the flavor source is adhered to the container.

11. A flavor generating article as described in any one of claims 1 to 10, wherein the container has a first member and a second member joined to the first member, and at least one of the first member and the second member has a recess that defines at least one of the first air flow path and the second air flow path before being joined to each other.

12. The flavor generating article of any one of claims 1 to 11, wherein at least one of said first air flow path and said second air flow path is at least partially defined by said container and said flavor source.

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