Flavor inhalation article

Abstract

A flavor inhalation article 1 comprises: a flavor source 10 that generates an aerosol by being heated by a heat source; a flow path forming body 20 that forms a flow path through which the aerosol flows; and an exterior body 60 that accommodates the flow path forming body 20. The flow path forming body 20 forms a flow path so that the aerosol flows helically in a direction intersecting the longitudinal direction.

Description

Flavor suction article

[0001] The present disclosure relates to flavor inhalation articles.

[0002] The non-combustion heating stick described in Patent Document 1 comprises a tobacco portion having an aerosol source containing tobacco, a cooling portion that generates aerosol by cooling the vapor generated when the tobacco portion is heated by a heating element, and a filter portion that allows the aerosol to pass through.

[0003] WO2023 / 084770

[0004] In the non-combustion heating stick described in Patent Document 1, the tobacco section, cooling section, and filter section each have a single function and are arranged in series in the longitudinal direction of the stick, resulting in a large longitudinal size. An object of the present disclosure is to provide a flavor inhalation article or the like that is small in longitudinal size.

[0005] To this end, the present disclosure provides a flavor inhalation article comprising: a flavor source that generates an aerosol when heated by a heat source; a flow path former that forms a flow path through which the aerosol flows; and an exterior body that houses the flow path former, wherein the flow path former forms the flow path so that the aerosol flows in a spiral pattern in a direction intersecting the longitudinal direction. Here, the exterior body may have a cylindrical portion whose centerline is the longitudinal direction, and the flow path former is formed to allow the aerosol to flow from a central portion to an outer periphery of the cylindrical portion. The exterior body may also have a first blocking portion that blocks one end of the cylindrical portion in the longitudinal direction and has an inlet hole formed in the central portion through which air flows, and a second blocking portion that blocks the other end of the cylindrical portion in the longitudinal direction. The cylindrical portion may also have an outlet hole formed in the outer periphery at a location corresponding to the flow path, for discharging the aerosol to the outside. The second blocking section may have a discharge hole formed in a portion corresponding to the flow path, for discharging the aerosol to the outside. The flavor source may be a plant-derived ingredient sheet, and the flow path forming body may form the flow path with the plant-derived ingredient sheet. The flavor source may be a plant-derived ingredient sheet, the flow path forming body may be a paper sheet, and the flavor source and the flow path forming body may be laminated. The flow path forming body may have a protrusion protruding from its surface. The protrusion may be calcium carbonate. The heating source may be a susceptor disposed in the center of the flow path forming body, and heat may be generated by a magnetic field generated by an electromagnetic induction source constituted by a coiled conductor disposed around the exterior body. The air permeability of the flow path forming body may be 0 to 35,000 Coresta units.

[0006] According to the present disclosure, a flavor inhalation article having a small longitudinal size can be provided.

[0007] 1 is a perspective view showing an example of a flavor inhalation article according to the first embodiment; FIG. 2 is an example of an exploded view of components constituting the flavor inhalation article according to the first embodiment; FIG. 3 is a perspective view showing an example of the interior of an exterior body of the flavor inhalation article according to the first embodiment; FIG. 4 is an example of a cross section taken along the line IV-IV in FIG. 1; FIG. 5 is a perspective view showing an example of a schematic configuration of a susceptor; FIG. 6 is a diagram schematically showing an example of a schematic configuration of an inhalation device; FIG. 7 is a diagram showing an example of a flow path of an aerosol in a flavor inhalation article; FIG. 8 is a diagram showing an example of a schematic configuration of a modified exterior body; FIG. 9 is a diagram showing an example of a schematic configuration of a first modified susceptor; FIG. 10 is a diagram showing an example of a schematic configuration of a second modified susceptor; FIG. 11 is an example of an exploded view of components constituting the flavor inhalation article according to the second embodiment; FIG. 12 is a diagram showing an example of a schematic configuration of a flavor inhalation article according to the third embodiment; FIG. 13 is a diagram showing an example of a schematic configuration of a modified flavor inhalation article according to the third embodiment; FIG. 14 is a diagram showing an example of a schematic configuration of a flavor inhalation article and an inhalation device using the flavor inhalation article according to the fourth embodiment; FIG. 15 is a diagram showing an example of a schematic configuration of an inhalation device using the flavor inhalation article according to the fifth embodiment; FIG. 16 is a diagram showing an example of a schematic configuration of a flavor inhalation article according to the sixth embodiment. Fig. 10 is a diagram schematically illustrating an example of a general configuration of a flavor inhalation article according to a seventh embodiment; Fig. 11 is a diagram schematically illustrating an example of a general configuration of a flavor inhalation article according to an eighth embodiment;

[0008] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, in which the same parts are designated by the same reference numerals.

[0009] <First embodiment> Fig. 1 is a perspective view showing an example of a flavor inhalation article 1 according to the first embodiment. Fig. 2 is an example of an exploded view of components constituting the flavor inhalation article 1 according to the first embodiment. Fig. 3 is a perspective view showing an example of the interior of an exterior body 60 of the flavor inhalation article 1 according to the first embodiment. Fig. 4 is a view showing an example of a cross section of section IV-IV in Fig. 1. Fig. 5 is a perspective view showing an example of a schematic configuration of a susceptor 50. The flavor inhalation article 1 includes a flavor source 10 that generates an aerosol when heated by a heat source, a flow path forming body 20 that forms a flow path through which the aerosol flows, a susceptor 50, and an exterior body 60 that houses the flavor source 10, the flow path forming body 20, and the susceptor 50.

[0010] The flavor inhalation article 1 is cylindrical and is formed so that the center line direction of the cylinder is the longitudinal direction. Hereinafter, the left and right sides in the longitudinal direction of Fig. 1 may be referred to as the "first side" and the "second side," respectively. Furthermore, a direction intersecting the longitudinal direction (e.g., a perpendicular direction) may be referred to as the "radial direction." In the radial direction, the side of the center line CL may be simply referred to as the "inner side," and the side away from the center line CL may be simply referred to as the "outer side."

[0011] (Flavor source 10) The flavor source 10 can be, for example, a plant-based raw material sheet formed into a sheet shape by a known method such as papermaking, slurrying, rolling, or extraction using a plant-based raw material such as tobacco plants such as tobacco leaves or non-tobacco plants, or an extrusion molded product.

[0012] In the case of papermaking, it can be produced by a method including the following steps: 1) For example, dry tobacco leaves are roughly crushed and extracted with water to separate the water extract and residue; 2) The water extract is dried under reduced pressure and concentrated; 3) Pulp is added to the residue, which is then fiberized in a refiner and made into paper; 4) A concentrated solution of the water extract is added to the paper-made sheet and dried to produce a plant-based raw material sheet.

[0013] In the case of the slurry method, tobacco can be produced by a method including the following steps: 1) mixing water, pulp, a binder, and crushed tobacco leaves; 2) spreading (casting) the mixture thinly and drying it. In this case, a step of irradiating the slurry of water, pulp, a binder, and crushed tobacco leaves with ultraviolet light or X-rays to remove some of the components such as nitrosamines may be added. In the case of the rolling method, the mixture of water, pulp, a binder, and crushed tobacco leaves is spread under pressure and dried.

[0014] The extraction method can be carried out in a known manner, and examples include the following methods: 1) a method in which a tobacco material is subjected to extraction using a medium to obtain a tobacco extract; 2) a method in which a medium is added to a tobacco material and heated, and the generated vapor is collected; and 3) a method in which the medium, which has been vaporized by heating, is passed through the tobacco material and the vapor is collected after passing. Examples of the medium include water, a hydrophilic organic solvent such as alcohol, or a combination of these, but the medium is preferably water or contains water. In method 1), it is preferable to use water as the medium from the standpoint of workability, etc. Furthermore, in methods 2) and 3), it is preferable to use an alcohol such as glycerin, propylene glycol, triacetin, 1,3-butanediol, or ethanol as the medium from the standpoint of work efficiency.

[0015] The flavor source 10 may also be a nonwoven plant-derived raw material sheet manufactured by a method including the following steps: 1) mixing powdered or granular material, such as tobacco leaves, with a binder; 2) sandwiching the mixture between nonwoven fabrics; and 3) forming the laminate into a specific shape by heat welding to obtain a nonwoven plant-derived raw material sheet.

[0016] The type of tobacco used as tobacco leaves from tobacco plants is not particularly limited. Examples include flue-cured tobacco, burley, oriental tobacco, native tobacco, other Nicotiana tabacum varieties, Nicotiana rustica varieties, and mixtures thereof. Mixtures can be used by appropriately blending varieties to achieve the desired flavor. The type of non-tobacco plant is not particularly limited. Examples of non-tobacco plants include mint and herbs. Furthermore, the plant material may be a mixture of tobacco and non-tobacco plants.

[0017] The composition of the flavor source 10 is not particularly limited. For example, the content of the plant-derived material is preferably 50% by mass or more and 95% by mass or less, based on the total mass of the flavor source 10. The flavor source 10 may also contain a binder, and examples of such binders include guar gum, xanthan gum, carboxymethyl cellulose, and sodium salts of carboxymethyl cellulose. The amount of the binder is preferably 1% by mass or more and 10% by mass or less, based on the total mass of the flavor source 10. The flavor source 10 may further contain other additives. Examples of additives include fillers such as pulp.

[0018] A polyol such as glycerin, propylene glycol, or 1,3-butanediol may be added to the flavor source 10. The amount of polyol added to the flavor source 10 is preferably 5% by mass or more and 50% by mass or less, and more preferably 15% by mass or more and 25% by mass or less, based on the dry mass of the flavor source 10.

[0019] The flavor source 10 may be a laminate of multiple plant-based raw material sheets. Two or more plant-based raw material sheets may all have the same composition or physical properties, or some or all of the plant-based raw material sheets may have different compositions or physical properties. The thickness of each plant-based raw material sheet may be the same or different. While there are no limitations on the thickness of each plant-based raw material sheet, a thickness of 100 μm to 1000 μm is preferred, and a thickness of 120 μm to 600 μm is more preferred, taking into account the balance between heat transfer efficiency and strength.

[0020] The flavor source 10 may also contain a flavoring. The type of flavoring is not particularly limited, and menthol is particularly preferred from the viewpoint of imparting a good flavor. The flavoring may be used alone or in combination of two or more types. When the inhalation device 100 (described below) in which the flavor inhalation article 1 is used is a medical inhaler, the flavor source 10 may contain a medicine to be inhaled by the patient. The flavoring source 10 may also be a porous carrier such as paper carrying a flavoring.

[0021] (Flow Channel Forming Body 20) The flow channel forming body 20 has a sheet of paper 21 and a plurality of protrusions 22 protruding from the surface of the paper 21. The protrusions 22 are formed from a material with high thermal conductivity, such as calcium carbonate. As shown in FIG. 2, the plurality of protrusions 22 can be formed across the entire surface of the paper 21. When a plurality of protrusions 22 arranged in the longitudinal direction so that their circumferential positions are the same are considered to be in the same row, the plurality of protrusions 22 are arranged such that the longitudinal positions of the protrusions 22 in adjacent rows are not the same, as shown in FIG. 2. However, the plurality of protrusions 22 may be formed in a partial region in the longitudinal direction. Furthermore, the longitudinal positions of the plurality of protrusions 22 in adjacent rows may be the same.

[0022] In the flavor inhalation article 1, a plant-based raw material sheet, which is the flavor source 10, and paper 21, which is the flow path forming body 20, are laminated to form a laminate 25 that contains the flavor source that generates the aerosol and forms a flow path through which the generated aerosol flows.

[0023] (Laminate 25) The laminate 25 is formed in a spiral shape facing outward, with the center line CL being one end. For example, the laminate 25 is formed in a spiral shape by winding square or rectangular plant-derived raw material sheets and paper 21 together. A susceptor 50 is disposed inside an inner end 26, which is one end of the laminate 25. An outer end 27, which is the other end of the laminate 25, is disposed so as to contact the inner circumferential surface of a tubular portion 70 (described later) of the exterior body 60.

[0024] The laminate 25 is formed by stacking the flavor source 10 and the flow path forming body 20 so that the inner surface, which is the surface facing the susceptor 50, is the flavor source 10. A protrusion 22 is provided on the outer surface of the flow path forming body 20, which is the surface opposite the flavor source 10. The tip of the protrusion 22 comes into contact with the flavor source 10 in the laminate 25 located outside the flow path forming body 20 on which the protrusion 22 is provided, thereby preventing contact between the paper 21 of the flow path forming body 20 and the flavor source 10 that are radially opposed, and forming a gap 28 between the laminates 25 that are radially opposed.

[0025] The laminate 25 is not limited to being formed into a spiral shape by winding the plant-based raw material sheet and the paper 21. For example, the laminate 25 may be formed into a spiral shape by punching a cylindrical block in the longitudinal direction. The laminate 25 may also be formed by stacking a cylindrical block of plant-based raw material sheet formed into a spiral shape by punching a cylindrical block of paper 21 in the longitudinal direction.

[0026] (Susceptor 50) The susceptor 50 is cylindrical and is arranged so that the direction of the center line of the cylinder is the direction of the center line CL. It is also preferable that the center line of the susceptor 50 is arranged so that it coincides with the center line CL. The longitudinal size of the susceptor 50 is equal to or smaller than the longitudinal size of the laminate 25. The susceptor 50 is arranged so that a portion of its outer circumferential surface contacts the flavor source 10 of the laminate 25. The susceptor 50 may be bonded to the flavor source 10 with an adhesive or the like.

[0027] The susceptor 50 has a plurality of through holes 51 formed therein, which allow communication between the inside and outside of the susceptor 50. The plurality of through holes 51 are formed so as to be aligned in a row from the first end to the second end in the center line direction. The plurality of through holes 51 may or may not be spaced equally apart. The susceptor 50 is molded from a magnetic material. Examples of the magnetic material include iron and ferritic stainless steel.

[0028] (Exterior body 60) Exterior body 60 has a tubular portion 70 that covers the outer periphery of laminate 25. Exterior body 60 also has a first closing portion 80 that closes the opening on the first side of tubular portion 70 and covers the portion of laminate 25 on the first side, and a second closing portion 90 that closes the opening on the second side of tubular portion 70 and covers the portion of laminate 25 on the second side.

[0029] The tubular portion 70 has a cylindrical shape and accommodates the laminate 25 and the susceptor 50 therein. The longitudinal size of the tubular portion 70 is the same as the longitudinal size of the laminate 25. The center line of the tubular portion 70 defines the center line CL of the flavor inhalation article 1.

[0030] The first closing portion 80 is disk-shaped. A central hole 81, which is a through-hole that allows communication between the inside and outside of the exterior body 60, is formed in the center of the first closing portion 80. The central hole 81 is circular and is formed in a position facing the susceptor 50. The diameter of the central hole 81 is equal to or smaller than the inner diameter of the susceptor 50, and air that passes through the central hole 81 enters the inside of the susceptor 50.

[0031] The second closing portion 90 is disk-shaped. An outer end hole 91, which is a through hole that allows communication between the inside and outside of the exterior body 60, is formed in an outer portion of the second closing portion 90. The outer end hole 91 is formed in a position corresponding to the outer end 27 of the stack 25. The outer end hole 91 is circular, and the diameter of the outer end hole 91 can be, for example, equal to or greater than the diameter of the central hole 81. The fluid that passes through the outer end hole 91 exits to the outside of the susceptor 50. The shape of the outer end hole 91 is not particularly limited, and may be elliptical or rectangular.

[0032] The exterior body 60 may be formed using a heat-resistant resin material, cardboard, or the like. The cylindrical portion 70, the first closing portion 80, and the second closing portion 90 may be formed using different materials or the same material. The cylindrical portion 70 and the first closing portion 80, and the cylindrical portion 70 and the second closing portion 90 may be joined by adhesion, welding, or the like.

[0033] The cylindrical portion 70 can be integrally molded using a resin material by, for example, injection molding, or can be integrally molded by rolling a sheet of cardboard. When rolling a sheet of cardboard, for example, both ends of the cardboard can be overlapped and glued together to form a cylindrical shape. When the cylindrical portion 70 is integrally molded, the laminate 25 and the susceptor 50 can be inserted through the opening on the first side or the second side of the cylindrical portion 70, and then the first closing portion 80 and the second closing portion 90 can be joined to the cylindrical portion 70, thereby manufacturing the flavor inhalation article 1.

[0034] The cylindrical portion 70, the first closing portion 80, and the second closing portion 90 may be molded by pulp molding, for example, pulp injection. The cylindrical portion 70 and the first closing portion 80 or the second closing portion 90 may also be molded integrally. For example, when the cylindrical portion 70 and the first closing portion 80 are molded integrally, the flavor inhalation article 1 can be manufactured by inserting the laminate 25 and the susceptor 50 from the second-side opening of the cylindrical portion 70 and then joining the second closing portion 90 to the cylindrical portion 70.

[0035] Pulp mold refers to a molded product obtained by molding or molding a pulp slurry. Here, pulp mold may refer to a molded product obtained by molding a slurry containing the residue (tobacco extract residue) remaining after obtaining a tobacco extract. In this case, the tobacco extract residue contains tobacco-derived fibers. The slurry for pulp mold preferably contains a medium, tobacco extract residue, a fibrous reinforcing material, and a binder. The slurry for pulp mold may also contain a filler.

[0036] Although not limited, the fibrous reinforcing material is preferably non-wood fiber. Non-wood fiber is fiber not derived from wood, and may be tobacco fiber or a fiber other than tobacco fiber. From the viewpoint of imparting strength, dietary fiber is preferred as the non-wood fiber. Dietary fiber is a food component that is not digested by human digestive enzymes, and is more preferably insoluble dietary fiber that does not dissolve in water. Dietary fiber may be porous, i.e., spongy. From the viewpoint of availability, the fiber is preferably citrus fiber. Citrus fiber is a fiber made primarily from the albedo of citrus fruits. Furthermore, dietary fiber may be short fiber or columnar particles with a small aspect ratio. Citrus fiber is particularly preferred because it can impart strength to the smoking article material with a small amount used. In one embodiment, the content of the fibrous reinforcing material in the smoking article material is 10 to 30 wt %.

[0037] The binder is not limited, but examples thereof include starch, carboxyalkyl cellulose, guar gum, etc. Among these, starch is preferred as the binder from the viewpoint of availability, etc. In one embodiment, the binder content in the smoking article material is 5 to 30 wt %.

[0038] The slurry for pulp molding contains fillers and inorganic materials used in paper, such as calcium carbonate, titanium dioxide, and kaolin, with calcium carbonate being preferred from the viewpoint of enhancing flavor and whiteness. Therefore, fillers are useful when forming nonwoven fabrics such as paper into smoking article materials. In one embodiment, the content of fillers in the smoking article material is 10% by weight or more but less than 60% by weight.

[0039] The medium is preferably water. The solids concentration in the slurry is not limited, but is preferably 0.5 to 10% by weight, more preferably 1 to 5% by weight. The slurry for pulp molding may also contain a water resistance improver, as described below, and, if necessary, a known water repellent, sizing agent, etc.

[0040] Molding can be performed as known in the art. For example, the slurry is filled into a female mold, and the slurry is compressed and dehydrated using a male mold to form a desired shape. Specifically, the slurry is filled into a female mold, and the male mold applies pressure to remove the slurry. The female mold may be formed of a mesh. The pulp mold thus obtained may be heated, coated with a coating agent, or otherwise processed.

[0041] Alternatively, the pulp molding may be pulp injection molding, which comprises the following steps: 1) mixing the tobacco extract residue with a binder (preferably starch) and then producing pellets; 2) mixing the pellets with water to form a pulp slurry, which is then injected into a mold; and 3) simultaneously with the injection molding, applying heat to the pulp slurry to remove moisture within the mold and dry it.

[0042] The laminate 25 and the exterior body 60 may be joined with an adhesive or the like. For example, the outer end 27 of the laminate 25 may be joined to the inner circumferential surface of the tubular portion 70. Alternatively, the first end of the laminate 25 may be joined to the first closing portion 80 of the exterior body 60. Alternatively, the second end of the laminate 25 may be joined to the second closing portion 90 of the exterior body 60.

[0043] (Usage of flavor inhalation article 1) FIG. 6 is a diagram schematically illustrating an example of the overall configuration of the inhalation device 100. The flavor inhalation article 1 is used in a non-combustion heating type inhalation device 100. The inhalation device 100 generates an aerosol by heating the flavor inhalation article 1 by induction heating (IH (Induction Heating)). The inhalation device 100 includes a power supply unit 111, a sensor unit 112, a notification unit 113, a storage unit 114, a communication unit 115, a control unit 116, an electromagnetic induction source 130, a holding unit 140, and a mouthpiece 150. In the inhalation device 100, the user inhales the flavor inhalation article 1 while it is held in the holding unit 140. Each component will be described below in order.

[0044] The power supply unit 111 stores power. The power supply unit 111 supplies power to each component of the suction device 100. The power supply unit 111 may be configured, for example, with a rechargeable battery such as a lithium-ion secondary battery. The power supply unit 111 may be charged by connecting to an external power source via a USB (Universal Serial Bus) cable or the like. The power supply unit 111 may also be charged using wireless power transmission technology while not connected to a power transmitting device. Alternatively, the power supply unit 111 may be detachable from the suction device 100 and may be replaceable with a new power supply unit 111.

[0045] The sensor unit 112 detects various types of information related to the suction device 100. The sensor unit 112 then outputs the detected information to the control unit 116. As an example, the sensor unit 112 is configured with a pressure sensor such as a microphone capacitor, a flow rate sensor, or a temperature sensor. When the sensor unit 112 detects a value associated with the user's suction, it outputs information indicating that the user has performed suction to the control unit 116. As another example, the sensor unit 112 is configured with an input device such as a button or switch that accepts information input from the user. In particular, the sensor unit 112 may include a button that instructs the start / stop of aerosol generation. The sensor unit 112 then outputs the information input by the user to the control unit 116. As another example, the sensor unit 112 is configured with a temperature sensor that detects the temperature of the susceptor 50. The temperature sensor detects the temperature of the susceptor 50 based on, for example, the electrical resistance value of the electromagnetic induction source 130. The sensor unit 112 may detect the temperature of the flavor inhalation article 1 held by the holding unit 140 based on the temperature of the susceptor 50 .

[0046] The notification unit 113 notifies the user of information. As an example, the notification unit 113 is configured with a light-emitting device such as an LED (Light Emitting Diode). In this case, the notification unit 113 emits light in different light-emitting patterns when the power supply unit 111 needs charging, when the power supply unit 111 is charging, when an abnormality has occurred in the inhalation device 100, and so on. The light-emitting pattern here is a concept that includes color, timing of turning on / off, and so on. The notification unit 113 may be configured with a display device that displays images, a sound output device that outputs sound, a vibration device that vibrates, and so on, together with or instead of the light-emitting device. Additionally, the notification unit 113 may notify information indicating that the user is ready to inhale. The information indicating that the user is ready to inhale is notified when the temperature of the flavor inhalation article 1, which is heated by electromagnetic induction, reaches a predetermined temperature.

[0047] The storage unit 114 stores various types of information for the operation of the suction device 100. The storage unit 114 is configured, for example, by a non-volatile storage medium such as a flash memory. One example of the information stored in the storage unit 114 is information related to the OS (Operating System) of the suction device 100, such as the control details of various components by the control unit 116. Another example of the information stored in the storage unit 114 is information related to suction by the user, such as the number of suctions, the time of suction, and the cumulative suction time.

[0048] The communication unit 115 is a communication interface for transmitting and receiving information between the suction device 100 and other devices. The communication unit 115 performs communication in accordance with any wired or wireless communication standard. Examples of such communication standards include a wireless local area network (LAN), a wired LAN, Wi-Fi (registered trademark), or Bluetooth (registered trademark). As one example, the communication unit 115 transmits information about the user's suction to a smartphone to display the information about the user's suction on the smartphone. As another example, the communication unit 115 receives new OS information from a server to update the OS information stored in the storage unit 114.

[0049] The control unit 116 functions as a calculation processing unit and a control device, and controls the overall operation of the suction device 100 in accordance with various programs. The control unit 116 is realized by electronic circuits such as a CPU (Central Processing Unit) and a microprocessor. The control unit 116 may also include a ROM (Read Only Memory) for storing programs and calculation parameters to be used, as well as a RAM (Random Access Memory) for temporarily storing parameters that change as needed. The suction device 100 executes various processes under the control of the control unit 116. Examples of processes controlled by the control unit 116 include power supply from the power supply unit 111 to the other components, charging of the power supply unit 111, detection of information by the sensor unit 112, notification of information by the notification unit 113, storage and retrieval of information by the memory unit 114, and transmission and reception of information by the communication unit 115. Other processes executed by the suction device 100, such as input of information to each component and processing based on information output from each component, are also controlled by the control unit 116.

[0050] The holding portion 140 has an internal space 141 and holds the flavor inhalation article 1 while accommodating the flavor inhalation article 1 in the internal space 141. The holding portion 140 has an opening 142 that connects the internal space 141 to the outside and holds the flavor inhalation article 1 inserted into the internal space 141 through the opening 142. For example, the holding portion 140 is a cylindrical body with a bottom 143 as its bottom surface, and defines a columnar internal space 141. The holding portion 140 is configured so that the inner two-face width is smaller than the two-face width of the flavor inhalation article 1 in at least a portion of the center line direction of the cylindrical body, and can hold the flavor inhalation article 1 by compressing the flavor inhalation article 1 inserted into the internal space 141 from the outside. An air inlet, which is an inlet for air into the flavor inhalation article 1, is located, for example, in the bottom 143. On the other hand, an air outlet, which is an outlet for air from the flow path, is the opening 142.

[0051] The electromagnetic induction source 130 heats the susceptor 50 by electromagnetic induction. The electromagnetic induction source 130 is, for example, configured with a coil-shaped conductor and arranged so as to be wound around the outer periphery of the holding unit 140. The electromagnetic induction source 130 generates a magnetic field when an alternating current is supplied from the power supply unit 111. The electromagnetic induction source 130 is arranged at a position where the generated magnetic field is superimposed on the internal space 141 of the holding unit 140. Therefore, when a magnetic field is generated while the flavor inhalation article 1 is held in the holding unit 140, an eddy current is generated in the susceptor 50, generating Joule heat. The flavor source 10 of the flavor inhalation article 1 is then heated and atomized by this Joule heat, generating an aerosol. For example, when a predetermined user input is detected by the sensor unit 112, power may be supplied and an aerosol may be generated. When the temperature of the flavor inhalation article 1, which has been induction-heated by the susceptor 50 and the electromagnetic induction source 130, reaches a predetermined temperature, the user can inhale the flavor inhalation article 1. Thereafter, power supply may be stopped when a predetermined user input is detected by the sensor unit 112. As another example, power may be supplied and aerosol may be generated during a period in which the sensor unit 112 detects that the user has inhaled.

[0052] The mouthpiece 150 is a member that is held in the mouth by the user when inhaling. An air outlet hole 151 is formed in the mouthpiece 150. The user can take the aerosol into the oral cavity by holding the mouthpiece 150 in their mouth and inhaling. Note that the mouthpiece 150 may have a hole formed upstream of the air outlet hole 151 that communicates the outside and inside of the mouthpiece 150. By forming a hole in the mouthpiece 150, when the user inhales the flavor inhalation article 1, air flows from the outside into the mouthpiece 150 through the hole. The air that has flowed into the mouthpiece 150 flows along the inner wall surface of the mouthpiece 150, which forms a flow path in the mouthpiece 150 through which the aerosol supplied from the flavor inhalation article 1 flows, thereby preventing the aerosol from adhering to the inner wall surface.

[0053] (Operation of Flavor Inhalation Article 1 and Inhalation Device 100) In the inhalation device 100, a user inserts the flavor inhalation article 1 into the internal space 141 of the holding unit 140, which is inside the electromagnetic induction source 130, from the first blocking unit 80 side, and uses the electromagnetic induction source 130 to perform induction heating, thereby enabling the aerosol to be inhaled. More specifically, when a user inhales, the flavor source 10 contained in the flavor inhalation article 1 is heated, generating vapor. The vapor is liquefied by contact with air flowing in through gaps in the device housing, for example, and the temperature drops, generating an aerosol. The air flowing in through gaps in the device housing flows in through an air inlet hole formed in the bottom 143 and flows into the exterior body 60 through the central hole 81 of the first blocking unit 80. The aerosol then flows out of the exterior body 60, passes through the opening 142 of the holding unit 140, and the mouthpiece 150, and enters the user's oral cavity.

[0054] FIG. 7 is a diagram showing an example of an aerosol flow path R in the flavor inhalation article 1. FIG. 7 is an example of a view of the interior of the flavor inhalation article 1 viewed from the first side in the longitudinal direction. In the flavor inhalation article 1, first, steam mainly generated from the flavor source 10 near the susceptor 50 flows into the interior of the susceptor 50 through the central hole 81 (see FIG. 2 ) of the first blocking portion 80 and comes into contact with air flowing out of the susceptor 50 through the through-hole 51 to generate aerosol. The aerosol flows outward along the shape of the laminate 25. As a result, the aerosol flows spirally from the inside to the outside in the radial direction, which is a direction intersecting the longitudinal direction. Furthermore, when the aerosol flows spirally from the inside to the outside in the radial direction, the aerosol flows through gaps formed between adjacent protrusions 22. The aerosol that reaches the outer end 27 of the laminate 25 passes through the outer end hole 91 (see FIG. 2) formed in the second closing portion 90 and flows out of the flavor inhalation article 1 .

[0055] As described above, in the flavor inhalation article 1, the aerosol spirals from the inside to the outside in a radial direction intersecting the longitudinal direction and flows out of the flavor inhalation article 1 through the outer end hole 91 formed in the second blocking portion 90. Thus, the flavor inhalation article 1 allows the flow path length to be longer than in a configuration in which the aerosol simply flows toward the second side in the longitudinal direction and then flows out (hereinafter, this may be referred to as the "comparative configuration"). Therefore, the flavor inhalation article 1 allows the aerosol to be cooled more thoroughly before flowing out of the flavor inhalation article 1 than in the comparative configuration. Therefore, for example, there is no need to provide a member downstream of the flavor inhalation article 1 for cooling the fluid flowing out of the flavor inhalation article 1. As a result, the longitudinal size of the flavor inhalation article 1 can be made smaller than in a configuration in which a member for cooling the aerosol is provided downstream of the flavor inhalation article 1.

[0056] 2, the plurality of protrusions 22 in the flavor inhalation article 1 are arranged so that the longitudinal positions of the protrusions 22 in adjacent rows are not the same, and therefore, aerosol that passes through gaps between adjacent protrusions 22 in the same row flows outward while colliding with the protrusions 22 in the adjacent rows. Therefore, according to the flavor inhalation article 1, it is possible to increase the length of the flow path R compared to, for example, a configuration in which the longitudinal positions of the protrusions 22 in adjacent rows are the same. Note that, according to the flavor inhalation article 1, the length and flow path resistance of the flow path R can be changed by changing the number and arrangement of the plurality of protrusions 22.

[0057] In the flavor inhalation article 1, as the aerosol flows through the flow path R, heat from the upstream side is transferred to the downstream laminate 25. Furthermore, the aerosol generated on the upstream side of the flow path R is sorbed by the downstream laminate 25. Therefore, high aerosol delivery can be achieved in the latter half of one session when the downstream laminate 25 reaches a high temperature.

[0058] Here, the flavor inhalation article 1 can be exemplified as having an aspect ratio defined by the following mathematical formula (1) of 1 or more and 3 or less: aspect ratio=h / w (1) In the mathematical formula (1), h is the size of the flavor inhalation article 1 in the longitudinal direction, and w is the diameter of the flavor inhalation article 1.

[0059] The longitudinal size h of the flavor inhalation article 1 can be, for example, 8 mm or more and 20 mm or less. The longitudinal size h is preferably 15 mm or less, and more preferably 10 mm or less. This is because the flavor inhalation article 1 can be made compact. The diameter w of the flavor inhalation article 1 can be, for example, 6 mm or more and 20 mm or less. The diameter w is preferably 15 mm or less, more preferably 10 mm or less, and even more preferably 8 mm or less. From the viewpoint of cooling performance, a larger diameter w is preferable, but from the viewpoint of making the flavor inhalation article 1 compact, a smaller diameter w is preferable.

[0060] The airflow resistance of the flavor inhalation article 1 is 150 mmH ２ For example, the pressure should be 100 mmH or less, and preferably 100 mmH ２ 0 or less, and more preferably 80 mmH ２ 0 or less, and more preferably 60 mmH ２ The airflow resistance of the flavor inhalation article 1 is 8 mmH or less. ２ For example, the pressure is 10 mmH or more, and preferably 10 mmH ２ 0 or more, more preferably 12 mmH ２ 0 or more. The airflow resistance of the flavor inhalation article 1 is measured in accordance with the ISO standard method (ISO6565) using, for example, a filter airflow resistance measuring device manufactured by Cerulean Co., Ltd. The airflow resistance of the flavor inhalation article 1 refers to the air pressure difference between the first side and the second side when air is allowed to flow at a predetermined air flow rate (17.5 cc / sec) from the first side to the second side in a state where air does not pass through the side surfaces of the flavor inhalation article 1. The unit is generally mmH. ２ It is represented by O.

[0061] The air permeability of the laminate 25 can be, for example, 0 Coresta units or more and 35,000 Coresta units or less, and is preferably more than 0 Coresta units and 10,000 Coresta units or less. In order to allow the aerosol to flow through the flow path R more easily, the air permeability of the laminate 25 may be 0 Coresta units or more and 100 Coresta units or less. Here, "air permeability" is a value measured in accordance with ISO2965:2009, and is the value of the air permeability of an area of ​​1 cm per minute when the differential pressure between both sides of the paper is 1 kPa. ２ Flow rate of gas passing through (cm ３ 1 C.U. is expressed as cm under 1 kPa. ３ / (min cm ２ ). The packing ratio of the laminate 25 can be, for example, 10 to 60%, and more preferably 15 to 40%. The packing ratio of the laminate 25 referred to here is the ratio of the thickness of the laminate 25 to the radial size W of the flow path R (in other words, the width of the flow path R) (thickness of the laminate 25 / radial size W of the flow path R). The thickness of the laminate 25 is the sum of the thickness of the plant-derived ingredient sheet, which is the flavor source 10, and the thickness of the paper 21, and does not include the protrusion amount of the protrusions 22. The packing density of the laminate 25 can be, for example, 0.15 to 0.3 g / cm. ３ The packing density of the laminate 25 referred to here is the ratio of the weight of the laminate 25 to the internal volume of the exterior body 60 (weight of the laminate 25 / internal volume of the exterior body 60). The weight of the laminate 25 is the total weight of the flavor source 10 and the paper 21, and does not include the weight of the protrusions 22.

[0062] As described above, the flavor inhalation article 1 includes the flavor source 10 that generates an aerosol when heated by the susceptor 50, which is an example of a heating source, the flow path former 20 that forms a flow path through which the aerosol flows, and the exterior body 60 that houses the flow path former 20. The flow path former 20 forms a flow path such that the aerosol flows spirally in a direction intersecting the longitudinal direction.

[0063] The flavor inhalation article 1 configured as described above allows the length of the flow path within the exterior body 60 to be longer than in a configuration in which the aerosol simply flows toward the second longitudinal side and then flows out to the outside. Therefore, for example, there is no need to provide a cooling member downstream of the flavor inhalation article 1. As a result, the longitudinal size of the flavor inhalation article 1 can be made smaller than in a configuration in which a cooling member is provided downstream of the flavor inhalation article 1. The length of the flow path R, i.e., the circumferential length from the outer opening of the through-hole 51 of the susceptor 50 disposed inside the laminate 25 to the outer end 27 of the laminate 25, can be, for example, 30 to 300 mm, preferably 40 to 260 mm, and more preferably 43 to 254 mm. By setting the length of the flow path R within the above range, it is possible to suppress an increase in the airflow resistance of the flavor inhalation article 1 while ensuring sufficient aerosol delivery.

[0064] Here, the exterior body 60 has a cylindrical tubular portion 70 (an example of a cylindrical portion) whose longitudinal direction is in the center line direction, and the flow path forming body 20 is formed to flow the aerosol from the center toward the outer periphery of the tubular portion 70. This makes it possible to reliably lengthen the flow path within the exterior body 60.

[0065] The outer casing 60 has a first blocking portion 80 that blocks one longitudinal end (e.g., the first end) of the tubular portion 70 and has a central hole 81 (an example of an inlet hole) formed in the center through which air flows, and a second blocking portion 90 that blocks the other longitudinal end (e.g., the second end) of the tubular portion 70.

[0066] In the flavor inhalation article 1, the second blocking portion 90 has an outer end hole 91 (an example of an exhaust hole) for exhausting the aerosol to the outside formed in a portion corresponding to the outer end 27 of the laminate 25, which is the final end of the flow path R. This makes it possible to exhaust the aerosol to the outside from the outer periphery, which is far away in the radial direction from the central hole 81 through which air flows in, and therefore makes it possible to reliably lengthen the flow path within the exterior body 60.

[0067] In the flavor inhalation article 1, the flavor source 10 is a plant-derived raw material sheet, the flow path forming body 20 is a sheet of paper 21, and the flavor source 10 and the flow path forming body 20 are laminated. Therefore, even if the flavor source 10 is heated to generate an aerosol, contraction of the flavor source 10 is suppressed. As a result, the flow path through which the aerosol flows can be maintained with high accuracy from the initial stage to the later stage of heating.

[0068] The flow path forming body 20 has protruding portions 22 protruding from the surface. This forms gaps 28 between the radially opposing laminates 25, ensuring a flow path R for the aerosol. The radial size W of the flow path R (in other words, the width of the flow path R) may be 0.3 to 1.5 mm, and preferably 0.35 to 0.97 mm. Since the radial size W of the flow path R is determined by the amount of protrusion of the protruding portions 22 from the surface of the paper 21, the amount of protrusion of the protruding portions 22 (in other words, the height of the protruding portions 22) may be 0.3 to 1.5 mm, and preferably 0.35 to 0.97 mm. By setting the radial size W of the flow path R (the width of the flow path R) within the above range, it is possible to suppress an increase in the airflow resistance of the flavor inhalation article 1 while ensuring a filling amount of the laminate 25 capable of delivering aerosol throughout one session.

[0069] In the flavor inhalation article 1, the heat source is the susceptor 50 arranged in the center of the flow path forming body 20, and heat is generated by the magnetic field generated by the electromagnetic induction source 130, which is composed of a coiled conductor arranged around the exterior body 60. The laminate 25 is formed by laminating the flavor source 10 and the flow path forming body 20 so that the surface on the susceptor 50 side faces the flavor source 10, and therefore the flavor source 10 can be heated with high accuracy.

[0070] The protrusion 22 of the flow path forming body 20 can be, for example, calcium carbonate. Because calcium carbonate has high thermal conductivity, the heat generated by the susceptor 50 is easily conducted to the outer portions of the laminate 25. As a result, the flavor source 10 of the laminate 25 located in the outer portion is more likely to generate steam.

[0071] The laminate 25 may be subjected to a surface treatment such as creping or embossing. Alternatively, the flavor source 10 or the flow path forming body 20 in the laminate 25 may be subjected to a surface treatment such as creping or embossing. This allows the protrusions 22 to be formed by surface treatment without forming the protrusions 22 using a material with high thermal conductivity such as calcium carbonate, and also increases the area over which the flavor source 10 is atomized. Furthermore, the flow path forming body 20 of the laminate 25 may be formed in a spiral shape using a heat-resistant resin material instead of the paper 21. If the flow path forming body 20 is formed in a spiral shape using a resin material, the protrusions 22 may not be provided on the flow path forming body 20. Furthermore, when the flow path forming body 20 is paper 21, instead of forming the gap 28 between the radially opposing laminates 25 using the protrusions 22, the gap 28 may be formed by forming a groove into which the longitudinal end of the laminate 25 fits on the surface of at least one of the first blocking portion 80 and the second blocking portion 90 facing the laminate 25. Furthermore, in the flavor inhalation article 1, when viewed in the longitudinal direction, the laminate 25 has a counterclockwise spiral shape, but it may also have a clockwise spiral shape.

[0072] (Modification of Exterior Body 60) FIG. 8 is a diagram showing an example of a schematic configuration of a modification of the exterior body 60. As shown in FIG. 8 , a tubular portion 270, which is a modification of the tubular portion 70, has a cylindrical first tubular portion 271 that covers the outer periphery of the stack 25 and a cylindrical second tubular portion 272 that covers the periphery of the first tubular portion 271. The first tubular portion 271 is a member corresponding to the tubular portion 70 and houses the stack 25 inside. The first tubular portion 271 has a plurality of outer end holes 275 (seven in FIG. 8 ) formed in the longitudinal direction at positions corresponding to the outer end 27 of the stack 25, which are discharge holes for discharging aerosol. The second tubular portion 272 has a plurality of support portions 276 (four in FIG. 8 ) formed in the circumferential direction, which protrude inward from the inner circumferential surface and support the first tubular portion 271 at the tip. The support portion 276 protrudes inward to form a gap between the outer peripheral surface of the first cylindrical portion 271 and the inner peripheral surface of the second cylindrical portion 272, and defines an annular gap in the circumferential direction between the outer peripheral surface of the first cylindrical portion 271 and the inner peripheral surface of the second cylindrical portion 272. The longitudinal size of the first cylindrical portion 271 and the second cylindrical portion 272 is the same as the longitudinal size of the laminate 25. The first-side openings of the first cylindrical portion 271 and the second cylindrical portion 272 are closed by the first closing portion 80, and the second-side openings are closed by the second closing portion 90. The outer end hole 91 of the second closing portion 90 is formed in the annular gap defined by the support portion 276 at a position corresponding to the annular gap from which the aerosol is discharged from the outer end hole 275. The outer end hole 91 discharges the aerosol from the inside to the outside of the cylindrical portion 270. The shape of the outer end hole 91 is not particularly limited. For example, as shown in Fig. 8, it may be arc-shaped. Thus, even in a configuration in which outer end hole 275 for discharging aerosol to the outside is formed at a portion of the outer periphery of first cylindrical portion 271 corresponding to flow path R, the length of flow path R can be made longer than in a comparative configuration. Furthermore, because second cylindrical portion 272 is provided on the outside of first cylindrical portion 271 in which outer end hole 275 is formed, aerosol discharged from outer end hole 275 is guided by second cylindrical portion 272 to the mouthpiece 150 side without coming into contact with the inner surface forming internal space 141 of inhalation device 100. This prevents the inner surface forming internal space 141 of inhalation device 100 from becoming dirty.

[0073] (Modifications of Susceptor 50) FIG. 9 is a diagram showing an example of the schematic configuration of a first modification of the susceptor 50. The means for communicating the inside and outside of the susceptor 50 is not limited to the through-hole 51 (see FIG. 5). As shown in FIG. 9, a notch 52 may be formed in a portion of the circumference of the cylindrical susceptor 50 over the entire longitudinal length. Furthermore, the notch formed in a portion of the circumference does not have to be formed over the entire longitudinal length as shown in FIG. 9, but may be formed in a portion of the longitudinal length. For example, the notch may be formed at both longitudinal ends of the susceptor 50, but not in the central portion. Alternatively, the notch may be formed in the longitudinal central portion of the susceptor 50, but not at both longitudinal ends.

[0074] Fig. 10 is a diagram showing an example of a schematic configuration of a second modified example of the susceptor 50. A susceptor 250, which is the second modified example of the susceptor 50, is stacked in the stacked body 25. For example, as shown in Fig. 10, the susceptor 250 is sheet-shaped and stacked inside the flavor source 10 in the stacked body 25. Although not shown, the susceptor 250 may also be sheet-shaped and stacked outside the flow path forming body 20 in the stacked body 25.

[0075] <Second embodiment> Fig. 11 is an example of an exploded view of components constituting a flavor inhalation article 2 according to a second embodiment. The flavor inhalation article 2 according to the second embodiment differs from the flavor inhalation article 1 according to the first embodiment in the flavor source 10 and the flow path forming body 20. Differences from the first embodiment will be described below. The same components in the first and second embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.

[0076] In the flavor inhalation article 1 according to the first embodiment, the flavor source 10 and the flow path forming body 20 form a laminate 25, but in the flavor inhalation article 2 according to the second embodiment, a plant-based raw material sheet 225 functions as the flavor source 10 and flow path forming body 20 according to the first embodiment. In other words, the plant-based raw material sheet 225 is the same as the plant-based raw material sheet that forms the flavor source 10 according to the first embodiment, and the plant-based raw material sheet 225 also functions as a flow path forming body that forms a flow path through which the aerosol flows. In other words, in the flavor inhalation article 1 according to the first embodiment, the flavor source 10 and the flow path forming body 20 are formed by two layers, a plant-based raw material sheet and a sheet of paper, but in the flavor inhalation article 2, the plant-based raw material sheet 225 is a single layer that forms the flavor source and the flow path forming body. The plant-based raw material sheet 225 may be the same thickness as the plant-based raw material sheet that forms the flavor source 10 according to the first embodiment, or may be the same thickness as the laminate 25 according to the first embodiment.

[0077] The plant raw material sheet 225 has multiple protrusions 222 protruding from its outer surface. The protrusions 222 are made of a highly thermally conductive material such as calcium carbonate. As shown in Figure 11, the multiple protrusions 222 are formed across the entire surface of the plant raw material sheet 225. The tips of the protrusions 222 come into contact with the plant raw material sheets 225 located outside the plant raw material sheet 225 on which the protrusions 222 are formed, thereby preventing contact between the plant raw material sheets 225 facing each other in the radial direction and forming gaps 28 between the plant raw material sheets 225 facing each other in the radial direction.

[0078] The air permeability of the plant raw material sheet 225 can be, for example, 0 Coresta units or more and 35,000 Coresta units or less, and preferably more than 0 Coresta units and 10,000 Coresta units or less. To facilitate easier flow of aerosol through the flow path R, the air permeability of the plant raw material sheet 225 can be 0 Coresta units or more and 100 Coresta units or less. The packing ratio of the plant raw material sheet 225 can be, for example, 10 to 40%, and preferably 13 to 36%. The packing ratio of the plant raw material sheet 225 here refers to the ratio of the thickness of the plant raw material sheet 225 to the radial dimension W of the flow path R (in other words, the width of the flow path R) (thickness of the plant raw material sheet 225 / radial dimension W of the flow path R). The thickness of the plant raw material sheet 225 does not include the protrusion amount of the protrusions 222. The packing density of the plant raw material sheet 225 is 0.03 to 0.3 g / cm. ３ Examples of the range are 0.046 to 0.22 g / cm ３ The packing density of the plant raw material sheet 225 referred to here is the ratio of the weight of the plant raw material sheet 225 to the internal volume of the outer casing 60 (weight of the plant raw material sheet 225 / internal volume of the outer casing 60). The weight of the plant raw material sheet 225 does not include the weight of the protrusions 222.

[0079] As described above, the flavor inhalation article 2 includes a flavor source that generates an aerosol when heated by a susceptor, which is an example of a heat source, a plant-derived ingredient sheet 225, which is an example of a flow path former that forms a flow path through which the aerosol flows, and an exterior body 60 that houses the plant-derived ingredient sheet 225. The plant-derived ingredient sheet 225 forms a flow path R so that the aerosol flows spirally in a direction intersecting the longitudinal direction.

[0080] In the flavor inhalation article 2, the plant-derived ingredient sheet 225 is a flavor source, and functions as a flow path former that forms a flow path. In the flavor inhalation article 2 configured as described above, as in the flavor inhalation article 1, the longitudinal size of the flavor inhalation article 2 can be made smaller than, for example, a configuration in which a cooling member is provided downstream of the flavor inhalation article 2.

[0081] <Third embodiment> Fig. 12 is a diagram showing an example of a schematic configuration of a flavor inhalation article 3 according to a third embodiment. The flavor inhalation article 3 according to the third embodiment differs from the flavor inhalation article 1 according to the first embodiment in that a susceptor 50 is provided at the outer end 27 of the laminate 25, and an exterior body 360 equivalent to the exterior body 60 is included. Differences from the first embodiment will be described below. The same components in the first and third embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.

[0082] More specifically, in the flavor inhalation article 3 , the susceptor 50 is arranged so as to contact the inner surface of the outer end 27 of the laminate 25 , and is not arranged inside the inner end 26 of the laminate 25 .

[0083] The exterior body 360 has a cylindrical portion 70, a first closing portion 380 corresponding to the first closing portion 80, and a second closing portion 390 corresponding to the second closing portion 90. The first closing portion 380 has an outer end hole 381, which is a through hole that allows the inside and outside of the exterior body 360 to communicate, formed in the outer periphery at a position corresponding to the susceptor 50. The second closing portion 390 has a central hole 391, which is a through hole that allows the inside and outside of the exterior body 360 to communicate, formed in the center. The central hole 391 is formed at a position corresponding to the inside of the inner end portion 26 of the stack 25. The shape of the central hole 391 is not particularly limited. For example, the central hole 391 may be a circle, an ellipse, or a rectangle.

[0084] (Operation of the flavor inhalation article 3 and the inhalation device 100) A user can insert the flavor inhalation article 3 into the internal space 141 of the holding part 140 and induce heating using the electromagnetic induction source 130 to bring the flavor inhalation article 3 into an inhalable state. More specifically, the steam mainly generated from the flavor source 10 near the susceptor 50 comes into contact with air flowing in from the outer end hole 381 of the first blocking part 380, causing a decrease in temperature, thereby generating an aerosol, which flows inward along the shape of the laminate 25. The aerosol that flows inward along the shape of the laminate 25 passes through the inside of the inner end 26 of the laminate 25 and the central hole 391 of the exterior body 360, and flows out of the flavor inhalation article 3.

[0085] As described above, in the flavor inhalation article 3, the length of the flow path within the exterior body 360 can be made longer compared to a configuration in which the aerosol simply flows toward the second side in the longitudinal direction and then flows out to the outside, and therefore, there is no need to provide a member for cooling the aerosol downstream of the flavor inhalation article 3, for example. As a result, the size of the flavor inhalation article 3 in the longitudinal direction can be made smaller than a configuration in which a member for cooling is provided downstream of the flavor inhalation article 3, for example.

[0086] (Modified Example of Flavor Inhalation Article 3) Fig. 13 is a diagram showing an example of a schematic configuration of a modified example of the flavor inhalation article 3 according to the third embodiment. In this modified example of the flavor inhalation article 3, a cylindrical susceptor 350 is arranged inside the tubular portion 70 of the exterior body 360, instead of the susceptor 50. The outer end portion 27 of the laminate 25 is formed so that the inner portion of the flavor source 10 comes into contact with the outer circumferential surface of the flow path forming body 20 located inside the outer end portion 27. An outer end hole 381 formed in the first blocking portion 380 is formed in the vicinity of the outer end portion 27 of the laminate 25, at a position corresponding to the gap between the flavor source 10 and the flow path forming body 20.

[0087] In the modified flavor inhalation article 3 configured as described above, too, the steam generated mainly from the flavor source 10 at the outermost periphery located near the susceptor 350 comes into contact with air flowing in from the outer end hole 381 of the first blocking portion 380, causing a decrease in temperature, thereby generating an aerosol, which flows inward along the shape of the laminate 25. The aerosol that has flowed inward along the shape of the laminate 25 passes through the inside of the inner end 26 of the laminate 25 and the central hole 391 of the exterior body 360, and flows out of the modified flavor inhalation article 3. As a result, the longitudinal size of the modified flavor inhalation article 3 can be made smaller than, for example, a configuration in which a cooling member is provided downstream of the modified flavor inhalation article 3.

[0088] The location where the cylindrical susceptor 350 is disposed is not limited to the inside of the cylindrical portion 70 of the exterior body 360. The susceptor 350 may be disposed outside the cylindrical portion 70 of the exterior body 360. When the susceptor 350 is disposed outside the cylindrical portion 70 of the exterior body 360, the susceptor 350 may be provided on the outer surface of the cylindrical portion 70 of the exterior body 360, for example. By providing the susceptor 350 on the outer surface of the cylindrical portion 70, it is possible to suppress a decrease in smoking quality caused by scorching due to adhesion of tar components to the laminate 25, compared to a configuration in which the susceptor 350 is provided inside the cylindrical portion 70.

[0089] When the susceptor 350 is disposed outside the cylindrical portion 70 of the exterior body 360, the susceptor 350 can be provided on the inner periphery of the holding portion 140 of the inhalation device 100. Even when the susceptor 350 is provided in the inhalation device 100, it is possible to suppress a decrease in smoking quality caused by scorching due to adhesion of tar components to the laminate 25, compared to a configuration in which the susceptor 350 is provided inside the cylindrical portion 70. Furthermore, by providing the susceptor 350 in the inhalation device 100, it is possible to reduce the amount of susceptor 350 that is discarded after inhalation, compared to a configuration in which the susceptor 350 is provided in the flavor inhalation article 1, which is also preferable from the viewpoint of sustainability.

[0090] <Fourth embodiment> Fig. 14 is a diagram schematically showing an example of the general configuration of a flavor inhalation article 4 according to a fourth embodiment and an inhalation device 400 that uses the flavor inhalation article 4. The flavor inhalation article 4 according to the fourth embodiment differs from the flavor inhalation article 1 according to the first embodiment in that it does not have a susceptor 50. Differences from the first embodiment will be described below. The same components in the first and fourth embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.

[0091] The flavor inhalation article 4 according to the fourth embodiment is not a type of device that generates aerosol by causing an electromagnetic induction source 130 to heat a susceptor 50 by electromagnetic induction, as in the inhalation device 100, but is used in an inhalation device 400 that has a heating unit 421 that generates heat itself inside the holding unit 140. More specifically, the inhalation device 400 has the heating unit 421 that is disposed so as to protrude from the bottom 143 of the holding unit 140 into the internal space 141 of the holding unit 140 and is configured in a blade shape from any material such as metal or polyimide. The flavor inhalation article 4 is attached to the inhalation device 400 so that the heating unit 421 is inserted inside the inner end 26 of the laminate 25. When power is supplied from the power supply unit 111 and the heating unit 421 generates heat, the flavor source 10 contained in the flavor inhalation article 4 is heated from the inside and atomized, thereby generating an aerosol.

[0092] The opening area of ​​the central hole 81 of the first blocking portion 80 is larger than the cross-sectional area of ​​the heating portion 421 cut along a plane perpendicular to the longitudinal direction, and air flowing into the exterior body 60 through the central hole 81 flows into a gap formed outside the heating portion 421 and inside the flavor source 10 in the laminate 25. Alternatively, the heating portion 421 may be cylindrical with a hollow interior and formed with radial through-holes communicating the inside and outside, and air flowing into the exterior body 60 through the central hole 81 of the first blocking portion 80 may flow through the interior of the heating portion 421 and the through-holes to the inside of the laminate 25. In such an embodiment, the opening area of ​​the central hole 81 of the first blocking portion 80 is preferably smaller than the cross-sectional area of ​​the interior of the heating portion 421 cut along a plane perpendicular to the longitudinal direction.

[0093] In addition, the plant-derived ingredient sheet 225 according to the second embodiment may be applied in place of the laminate 25 in the flavor inhalation article 4.

[0094] <Fifth embodiment> Fig. 15 is a diagram schematically showing an example of the general configuration of an inhalation device 500 that uses a flavor inhalation article 5 according to a fifth embodiment. The flavor inhalation article 5 according to the fifth embodiment differs from the flavor inhalation article 3 according to the third embodiment in that it does not have a susceptor 50. Differences from the third embodiment will be described below. The same components in the third and fifth embodiments are designated by the same reference numerals, and detailed descriptions thereof will be omitted.

[0095] The flavor inhalation article 5 according to the fifth embodiment is not a type of device that generates an aerosol by causing an electromagnetic induction source 130 to heat a susceptor 50 by electromagnetic induction, as in the inhalation device 100, but is used in an inhalation device 500 that has a heating unit 521 that generates heat itself and is located outside the holding unit 140. More specifically, the inhalation device 500 has the heating unit 521 that is arranged to cover the outer periphery of the holding unit 140 and is made into a film-like shape using any material such as metal or polyimide. When the heating unit 521 generates heat by receiving power from the power supply unit 111, the flavor source 10 included in the flavor inhalation article 5 is heated and atomized, thereby generating an aerosol.

[0096] The flavor inhalation article 5 according to the fifth embodiment may have a plant-derived raw material sheet 225 instead of the laminate 25, similar to the flavor inhalation article 2 according to the second embodiment.

[0097] <Sixth embodiment> Fig. 16 is a diagram schematically showing an example of the overall configuration of a flavor inhalation article 6 according to a sixth embodiment. In addition to the flavor inhalation article 1 according to the first embodiment, the flavor inhalation article 6 according to the sixth embodiment has a filter section 600 on the second side in the longitudinal direction of the flavor inhalation article 1, and also has tipping paper 650 that integrates the flavor inhalation article 1 and the filter section 600. Differences from the first embodiment will be described below. The same components in the first and sixth embodiments are designated by the same reference numerals, and detailed descriptions thereof will be omitted.

[0098] [Filter section 600] The filter section 600 has a filter 610 through which the aerosol passes, and a wrapping paper 620 that is located between the filter 610 and the tipping paper 650 and wrapped around the outer circumferential surface of the filter 610. The filter section 600 is wound up integrally with the flavor inhalation article 1 using the tipping paper 650. The wrapping paper 620 may not be provided.

[0099] The filter 610 has functions such as reducing nicotine and tar, as well as reducing unpleasant sensations such as irritation. Furthermore, the filter 610 may contain additives such as known flavorings, such as menthol, adsorbents, granular activated carbon, and flavor retention agents. The filter 610 may be a plain filter including a single filter segment, or a multi-segment filter including multiple filter segments, such as a dual filter or triple filter. The filter 610 may be formed into a rectangular parallelepiped shape using a filler such as acetate, charcoal, cellulose fiber, nonwoven fabric, or pulp paper. Alternatively, a paper filter filled with pulp paper in sheet form may be used.

[0100] The wrapping paper 620 may have one or more rows of adhesive-containing seams. The adhesive may include a hot-melt adhesive, and the hot-melt adhesive may further include polyvinyl alcohol. The adhesive may also include a vinyl acetate adhesive. When the filter unit 600 is composed of two or more components, the wrapping paper 620 is preferably formed by wrapping each of these two or more components together with another wrapping paper. The material of the wrapping paper 620 is not particularly limited, and known materials may be used, and the wrapping paper 620 may contain a filler such as calcium carbonate. The wrapping paper 620 may be coated or uncoated, but is preferably coated with a desired material to provide functions other than strength and structural rigidity.

[0101] The shape of the wrapping paper 620 can be, for example, a square or a rectangle. When wrapping the filter 610 with the wrapping paper 620, for example, in the circumferential direction, an end of the wrapping paper 620 and an end of the wrapping paper 620 on the opposite side are overlapped by about 2 mm and glued together to form a cylindrical paper tube shape in which the filter 610 is packed. The size of the wrapping paper 620 can be determined depending on the size of the filter part 600.

[0102] [Tipping Paper 650] The tipping paper 650 is wound around the outer periphery of the flavor inhalation article 1 and the filter part 600. The shape of the tipping paper 650 is not particularly limited, and can be, for example, square or rectangular. The basis weight of the tipping paper 650 is not particularly limited, but is usually 32 gsm or more and 60 gsm or less, preferably 33 gsm or more and 55 gsm or less, and more preferably 34 gsm or more and 53 gsm or less. The air permeability of the tipping paper 650 is not particularly limited, but is usually 0 Coresta units or more and 35,000 Coresta units or less, and preferably more than 0 Coresta units and 10,000 Coresta units or less. Here, "air permeability" is a value measured in accordance with ISO2965:2009, and is the rate at which an area of ​​1 cm2 per minute is eroded when the differential pressure between both sides of the paper is 1 kPa. ２ Flow rate of gas passing through (cm ３ 1 C.U. is expressed as cm under 1 kPa. ３ / (min cm ２ )

[0103] The composition of the tipping paper 650 is not particularly limited and can be any common form, such as one containing pulp as the main component. Pulp may be made from wood pulp such as softwood pulp or hardwood pulp, or may be made by blending non-wood pulp commonly used in cigarette paper for tobacco products, such as flax pulp, hemp pulp, sisal pulp, or esparto. These pulps may be used alone or in any combination of two or more types in any ratio. Pulp forms include chemical pulp produced by kraft cooking, acidic, neutral, or alkaline sulfite cooking, soda cooking, ground pulp, chemi-ground pulp, and thermomechanical pulp. The tipping paper 650 may be produced by the above-mentioned production method or may be a commercially available product.

[0104] In addition to the materials described above, the tipping paper 650 may contain fillers, such as metal carbonates such as calcium carbonate and magnesium carbonate, metal oxides such as titanium oxide, titanium dioxide and aluminum oxide, metal sulfates such as barium sulfate and calcium sulfate, metal sulfides such as zinc sulfide, quartz, kaolin, talc, diatomaceous earth, gypsum, etc., and it is particularly preferable that the tipping paper 650 contains calcium carbonate from the viewpoints of improving whiteness and opacity and increasing the heating rate. Furthermore, these fillers may be used alone or in combination of two or more types.

[0105] In addition to the materials and fillers described above, the tipping paper 650 may contain various auxiliary agents. For example, the tipping paper 650 may contain a water resistance improver to improve water resistance. Water resistance improvers include wet strength agents (WS agents) and sizing agents. Examples of wet strength agents include urea-formaldehyde resin, melamine-formaldehyde resin, polyamide epichlorohydrin (PAE), etc. Examples of sizing agents include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohol with a saponification degree of 90% or more.

[0106] A coating agent may be added to at least one of the two surfaces, the front and back surfaces, of the tipping paper 650. The coating agent is not particularly limited, but a coating agent capable of forming a film on the surface and reducing liquid permeability is preferred. A portion of the outer surface of the tipping paper 650 may be coated with a lip release material. The lip release material refers to a material configured to help the user easily separate the tipping paper 650 from the lips without substantial adhesion when the filter portion 600 of the flavor inhalation article 6 is held between the mouth and the lips. The lip release material may include, for example, ethyl cellulose, methyl cellulose, nitrocellulose, etc. For example, the outer surface of the tipping paper 650 may be coated with the lip release material by applying an ethyl cellulose-based or methyl cellulose-based ink to the outer surface of the tipping paper 650.

[0107] The flavor inhalation article 6 has the filter unit 600, which allows the user to inhale the aerosol by holding the filter unit 600 in their mouth. Therefore, the inhalation device 100 does not need to include the mouthpiece 150. Furthermore, in the flavor inhalation article 6, the flow path length can be made longer compared to the comparative configuration, so the aerosol can be cooled more effectively, and even if the filter unit 600 is included, the longitudinal size of the filter unit 600 can be made smaller.

[0108] The means for integrating the flavor inhalation article 1 and the filter unit 600 is not limited to the tipping paper 650. The flavor inhalation article 1 and the filter unit 600 may be joined together, for example, with an adhesive. Furthermore, the flavor inhalation article 2 according to the second embodiment to the flavor inhalation article 5 according to the fifth embodiment may each have a filter unit 600 and a tipping paper 650. Seventh Embodiment FIG. 17 is a diagram schematically illustrating an example of the overall configuration of a flavor inhalation article 7 according to the seventh embodiment. The flavor inhalation article 7 according to the seventh embodiment differs from the flavor inhalation article 6 according to the sixth embodiment in that it has a cylindrical tubular portion 730 between the flavor inhalation article 1 and the filter unit 600, and the tipping paper 650 integrates the flavor inhalation article 1, the filter unit 600, and the tubular portion 730. Differences from the sixth embodiment will be described below. The same components in the sixth and seventh embodiments are designated by the same reference numerals, and detailed descriptions thereof will be omitted.

[0109] [Cylindrical portion 730] The cylindrical portion 730 is disposed adjacent to the flavor inhalation article 1 and the filter portion 600, and is formed by wrapping the sheet 731 around the cylindrical portion 730 so that a cross section cut along a plane perpendicular to the longitudinal direction is hollow (hollow). The cylindrical portion 730 cools the aerosol flowing out of the flavor inhalation article 1. The cross section of the cylindrical portion 730 is substantially circular, and its area can be changed appropriately depending on the size of the product, but is preferably approximately the same as the cross section of the filter 610. The longitudinal size of the cylindrical portion 730 can be changed appropriately depending on the size of the product, but is typically 5 mm or more, preferably 10 mm or more, and more preferably 15 mm or more. The longitudinal size of the cylindrical portion 730 is typically 35 mm or less, preferably 30 mm or less, and more preferably 25 mm or less. The longitudinal size of the cylindrical portion 730 preferably satisfies any combination of the above-mentioned lower and upper limits. By making the longitudinal size of the cylindrical portion 730 equal to or greater than the above-mentioned lower limit, a sufficient cooling effect can be ensured to obtain a good flavor, and by making it equal to or less than the above-mentioned upper limit, losses due to the generated steam and aerosol adhering to the sheet 731 can be suppressed.

[0110] For example, the cylindrical portion 730 is a paper tube formed by winding a sheet 731 made of paper. Alternatively, the cylindrical portion 730 may be a paper tube formed by stacking a plurality of sheets 731 including at least paper. By stacking a plurality of sheets 731, the strength of the cylindrical portion 730 can be maintained even when the basis weight of each of the sheets 731 is small.

[0111] The thickness of sheet 731 is not particularly limited and may be, for example, 50 μm to 500 μm, or 100 μm to 250 μm. The material of sheet 731 is also not particularly limited and may be, for example, a material primarily composed of pulp, or a material primarily composed of any of polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polylactic acid, cellulose acetate, and aluminum foil, or any combination thereof. While cylindrical portion 730 is formed by rolling sheet 731, this configuration is not limited as long as the cross section is hollow. Cylindrical portion 730 may be formed, for example, from a tube of synthetic resin or the like that already has a hollow cross section.

[0112] The cylindrical portion 730 may be provided with a plurality of through-holes 732 (also referred to as "ventilation filters (Vf)" in the present technical field) in its circumferential direction. The through-holes 732 are holes that penetrate the sheet 731. Examples of the hole shapes include polygonal, rounded polygonal, circular, and elliptical. The through-holes 732 are present in an area through which air can flow in from the outside of the flavor inhalation article 7, in other words, in an area that protrudes from the opening 142 when the flavor inhalation article 7 is held in the holding portion 140 of the inhalation device 100.

[0113] The presence of the through-holes 732 makes it possible to adjust the concentration of the inhaled flavor components and aerosol. Furthermore, the presence of the plurality of through-holes 732 allows air to flow into the interior of the cylindrical portion 730 from the outside during inhalation, thereby lowering the temperature of the steam and air flowing in from the flavor inhalation article 1. Furthermore, by providing the through-holes 732 in the cylindrical portion 730 within a region 4 mm or more from the boundary between the cylindrical portion 730 and the filter portion 600 toward the cylindrical portion 730 (first side), not only is the cooling capacity improved, but the retention of the substance (product) generated by heating within the cylindrical portion 730 can be suppressed, thereby improving the delivery amount of the product.

[0114] Furthermore, when the flavor inhalation article 7 is configured such that the flavor inhalation article 1, the cylindrical portion 730, and the filter portion 600 are wrapped with tipping paper 650, the tipping paper 650 preferably has an air hole formed in a position directly above the through-hole 732 formed in the cylindrical portion 730. When producing such a flavor inhalation article 7, tipping paper 650 having an air hole that overlaps with the through-hole 732 may be prepared and wound, but from the viewpoint of ease of production, it is preferable to produce a flavor inhalation article 7 that does not have a through-hole 732, and then open a hole that passes through both the cylindrical portion 730 and the tipping paper 650 at the same time.

[0115] The through-holes 732 are positioned so that the air inflow rate through the through-holes 732 is 10% by volume or more and 90% by volume or less when an automatic smoking machine is used to inhale at 17.5 ml / sec. This "air inflow rate" refers to the volumetric rate of air inflowing through the through-holes 732 when the volumetric rate of air inhaled from the mouth end is taken as 100% by volume. The air inflow rate is preferably 50% by volume or more and 80% by volume or less, and more preferably 55% by volume or more and 75% by volume or less. The air inflow rate can be measured using a roll quality measuring device (SODIMAX D74 / SODIM manufactured by S.A.S.) in accordance with a method conforming to ISO 9512.

[0116] The flavor suction article 2 according to the second embodiment to the flavor suction article 5 according to the fifth embodiment may have the filter portion 600 , the tipping paper 650 , and the cylindrical portion 730 .

[0117] <Eighth embodiment> Fig. 18 is a diagram schematically showing an example of the general configuration of a flavor inhalation article 8 according to an eighth embodiment. The flavor inhalation article 8 according to the eighth embodiment differs from the flavor inhalation article 7 according to the seventh embodiment in that it has a tip portion 840 arranged on the first side of the flavor inhalation article 7, and that a tip paper 650 integrates the flavor inhalation article 7 and the tip portion 840. Differences from the seventh embodiment will be described below. The same components in the seventh and eighth embodiments are designated by the same reference numerals, and detailed descriptions thereof will be omitted.

[0118] The tip portion 840 is a solid member that suppresses smoke leakage from the end face on the first side of the flavor inhalation article 7. The cross section of the tip portion 840 is substantially circular, and can be exemplified as having the same shape as the end portion on the first side of the flavor inhalation article 7. The tip portion 840 can be exemplified as a filter formed by molding a filler such as cellulose acetate fiber, nonwoven fabric, or pulp paper into a cylindrical shape, or a paper filter filled with sheet-like pulp paper.

[0119] The tip portion 840 may have a function of guiding the air that has flowed in through the air inlet hole provided in the bottom portion 143 of the holding portion 140 of the inhalation device 100 only to a position corresponding to the inside of the inner end portion 26 of the laminate 25. When the tip portion 840 has this function, the flavor inhalation article 8 does not need to have the first blocking portion 80.

[0120] The flavor suction article 2 according to the second embodiment to the flavor suction article 5 according to the fifth embodiment may have the filter portion 600 , the tip paper 650 , the cylindrical portion 730 , and the tip portion 840 .

[0121] <Summary> The present disclosure includes the following configurations: (1) A flavor inhalation article comprising: a flavor source that is heated by a heat source to generate an aerosol, a flow path former that forms a flow path through which the aerosol flows, and an exterior body that houses the flow path former, wherein the flow path former forms the flow path so that the aerosol flows spirally in a direction intersecting the longitudinal direction. (2) The flavor inhalation article described in (1), wherein the exterior body has a cylindrical portion whose center line direction is the longitudinal direction, and the flow path former is formed to flow the aerosol from a center portion toward an outer periphery of the cylindrical portion. (3) The flavor inhalation article described in (2), wherein the exterior body has a first blocking portion that blocks one end of the cylindrical portion in the longitudinal direction and has an inlet hole formed in the center through which air flows, and a second blocking portion that blocks the other end of the cylindrical portion in the longitudinal direction. (4) The flavor inhalation article according to (3), wherein the cylindrical portion has an exhaust hole formed in a portion of the outer periphery corresponding to the flow path, for exhausting the aerosol to the outside. (5) The flavor inhalation article according to (3), wherein the second blocking portion has an exhaust hole formed in a portion of the outer periphery corresponding to the flow path, for exhausting the aerosol to the outside. (6) The flavor inhalation article according to any one of (1) to (5), wherein the flavor source is a plant-derived raw material sheet, and the flow path forming body forms the flow path with the plant-derived raw material sheet. (7) The flavor inhalation article according to any one of (1) to (5), wherein the flavor source is a plant-derived raw material sheet, the flow path forming body is a sheet of paper, and the flavor source and the flow path forming body are laminated. (8) The flavor inhalation article according to (6) or (7), wherein the flow path forming body has a protrusion protruding from a surface. (9) The flavor inhalation article according to (8), wherein the protrusion is calcium carbonate. (10) The flavor inhalation article according to any one of (1) to (9), wherein the heat source is a susceptor disposed in the center of the flow path forming body, and an electromagnetic induction source constituted by a coiled conductor disposed around the exterior body generates a magnetic field to generate heat. (11) The flavor inhalation article according to any one of (1) to (10), wherein the air permeability of the flow path forming body is 0 to 35,000 Coresta units.

[0122] DESCRIPTION OF SYMBOLS 1, 2, 3, 4, 5, 6, 7, 8... flavor suction article, 10... flavor source, 20... flow path forming body, 25... laminated body, 50... susceptor, 60... outer body, 70... cylindrical portion, 80, 380... first closing portion, 81, 391... central hole, 90, 390... second closing portion, 91, 381... outer end hole, 100, 400, 500... suction device, 130... electromagnetic induction source, 225... plant-derived raw material sheet

Claims

1. A flavor inhalation article comprising: a flavor source that is heated by a heat source to generate an aerosol; a flow path former that forms a flow path through which the aerosol flows; and an exterior body that houses the flow path former, wherein the flow path former forms the flow path so that the aerosol flows spirally in a direction that intersects with the longitudinal direction.

2. The flavor inhalation article according to claim 1, wherein the outer casing has a cylindrical portion whose center line direction is the longitudinal direction, and the flow path forming body is formed so as to flow the aerosol from the center of the cylindrical portion toward the outer periphery.

3. A flavor inhalation article as described in claim 2, wherein the exterior body has a first closing portion that closes one end of the cylindrical portion in the longitudinal direction and has an inlet hole formed in the center through which air flows, and a second closing portion that closes the other end of the cylindrical portion in the longitudinal direction.

4. The flavor inhalation article according to claim 3, wherein the cylindrical portion has an exhaust hole formed in the outer periphery at a position corresponding to the flow path for exhausting the aerosol to the outside.

5. The flavor inhalation article according to claim 3, wherein the second blocking portion has a discharge hole formed in a portion corresponding to the flow path for discharging the aerosol to the outside.

6. A flavor inhalation article according to any one of claims 1 to 5, wherein the flavor source is a plant-derived raw material sheet, and the flow path forming body forms the flow path in the plant-derived raw material sheet.

7. A flavor inhalation article according to any one of claims 1 to 5, wherein the flavor source is a plant-based raw material sheet, the flow path forming body is a sheet of paper, and the flavor source and the flow path forming body are laminated.

8. The flavor inhalation article according to claim 6 or 7, wherein the flow path forming body has a protrusion protruding from a surface thereof.

9. The flavor inhalation article according to claim 8, wherein the protrusions are calcium carbonate.

10. A flavor inhalation article as described in any one of claims 1 to 9, wherein the heat source is a susceptor arranged in the center of the flow path forming body, and heat is generated by an electromagnetic induction source consisting of a coiled conductor arranged around the outer casing, which generates a magnetic field.

11. The flavor inhalation article according to any one of claims 1 to 10, wherein the air permeability of the flow path forming body is 0 to 35,000 Coresta units.

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