Flavor inhalation article

Abstract

This flavor inhalation article 1 comprises: a base material part 10 including an aerosol source 11; and a mouthpiece segment 50 through which an aerosol generated by the base material part 10 passes. The mouthpiece segment 50 includes: a first filter 31 that is a paper filter disposed on the base material part 10 side; a second filter that is a paper filter disposed on the side opposite to the base material part 10 with respect to the first filter 31; and a powder-containing material 34 that is disposed in a cavity 33 formed between the first filter 31 and the second filter 32, that is a mass of a raw material powder containing at least one of a taste component and a fragrance component, and that serves as powder by receiving an external force. A restriction member 36 that restricts the flow path of the aerosol is disposed inside the first filter 31, and a supply path member 37 that forms a flow path for supplying the powder from the cavity 33 to the downstream end is disposed in the second filter 32.

Description

Flavor suction article

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

[0002] Patent Document 1 discloses a smoking cartridge that is inserted into a heated smoking device having a heating element and heated for use when smoking, and that has a filter member disposed at at least one end that faces the mouth when smoking and an aerosol-generating mechanism disposed at the other end that generates an aerosol when heated, wherein the aerosol-generating mechanism comprises one or more capsules having a shell layer that contains an aerosol-generating substance that generates an aerosol when heated, and the shell layer is configured to be melted by heat or damaged by the heating element to release the aerosol-generating substance within the shell layer, and a holding / carrying member that functions, before use, as a member for holding at least one capsule in a position where it will come into contact with or be close to the heating element when inserted into the heated smoking device, and that, when in use, functions as a member for carrying the aerosol-generating substance-containing substance released from the shell layer of the at least one capsule.

[0003] Japanese Patent Application Laid-Open No. 2022-118979

[0004] For example, in a flavor inhalation article using a paper filter, it is desired to be able to impart a new smoking flavor to provide a new experience to a user. An object of the present disclosure is to provide a flavor inhalation article that can impart a new smoking flavor when a paper filter is used in the flavor inhalation article.

[0005] A first feature of the present disclosure, which has been completed with this objective in mind, is a flavor inhalation article comprising: a substrate containing an aerosol source; and a filter through which the aerosol generated from the substrate passes, the filter comprising a first paper filter disposed on the substrate side; a second paper filter disposed on the opposite side of the first paper filter from the substrate; and a powder inclusion disposed in a cavity formed between the first and second paper filters, the powder inclusion being a mass of raw material powder containing at least one of a flavor component and a flavor component and being turned into powder upon application of an external force, the first paper filter having a restricting member disposed inside the first paper filter that restricts the flow path of the aerosol, and the second paper filter having a supply path member disposed inside the second paper filter that forms a flow path for supplying the powder from the cavity to a downstream end. A second feature is that the restricting member may be selected from a hollow member closed at both longitudinal ends of the filter, a solid member, a capsule containing a powder or liquid therein, a thread, a string, or a rope. A third feature may be that the length of the limiting member along the longitudinal direction of the filter portion is shorter than the length of the first paper filter along the longitudinal direction. A fourth feature may be that the difference between the length of the limiting member along the longitudinal direction and the length of the first paper filter along the longitudinal direction is 2 mm or more. A fifth feature may be that the limiting member is located on the downstream end side of the first paper filter. A sixth feature may be that the length of the limiting member along the longitudinal direction of the filter portion is the same as the length of the first paper filter along the longitudinal direction. A seventh feature may be that the ratio of the circumference of the limiting member to the circumference of the first paper filter is 0.2 or more and less than 0.7. An eighth feature may be that the supply path member is a hollow member with both ends of the filter portion in the longitudinal direction open. A ninth feature may be that the supply path member includes at least paper. A tenth feature is that the supply path member may be a straight paper tube formed by winding paper in a cylindrical shape, or a spiral paper tube formed by winding strip-shaped paper obliquely.An eleventh feature may be that the length of the supply path member along the longitudinal direction of the filter portion is the same as the length of the second paper filter along the longitudinal direction. A twelfth feature may be that the ratio of the circumference of the supply path member to the circumference of the second paper filter is 0.2 or greater and less than 0.7. A thirteenth feature may be that the size of the powder inclusion is 1 mm or greater and 8 mm or less. A fourteenth feature may be that, when one powder inclusion is placed in the cavity, the size of the powder inclusion is 3 mm or greater and smaller than the inner diameter of the cavity. A fifteenth feature may be that, when at least two powder inclusions are placed in the cavity, the size of the powder inclusion is 1 mm or greater and smaller than the inner diameter of the cavity. A sixteenth feature may be that the breaking strength at which the powder inclusion breaks into the powder is 5 N or greater and 60 N or less. A seventeenth feature of the powder-containing material may be that the raw material powder having a particle diameter of 10 μm or more and 600 μm or less accounts for 50 mass% or more of the total mass of the powder-containing material. An eighteenth feature of the filter unit may be that a cylindrical member formed into a cylindrical shape between the substrate unit and the first paper filter, and the circumference of the cylindrical member is approximately the same as the circumference of the first paper filter. A nineteenth feature of the filter unit may be that the substrate unit and the filter unit have tipping paper wound around their outer peripheries, and the tipping paper has a vent hole formed at a position corresponding to the tubular member, the first paper filter, or the second paper filter, and allows air to flow from the outside to the inside. A twentieth feature of the filter unit may be that the first paper filter and the second paper filter are filled with a sheet member. A twenty-first feature of the filter unit may be that the first paper filter and the second paper filter are filled with the sheet member so that voids are formed along the longitudinal direction of the filter unit. A twenty-second feature may be that the first paper filter and the second paper filter are filters in which the sheet member is gathered.A twenty-third feature may be that the first paper filter and the second paper filter are filters in which the sheet members are crimped.

[0006] According to the first, 20, and 23 features, a flavor inhalation article can be provided that can impart a new flavor flavor when a paper filter is used in the flavor inhalation article. According to the second feature, a flavor inhalation article can be provided that can impart a new flavor flavor while providing a user with a moderate smoking sensation, compared to a configuration without a restricting member in which both longitudinal ends of the filter portion are closed. According to the third feature, a portion of the aerosol flow path in the first paper filter can be restricted. According to the fourth feature, the appearance in the longitudinal direction of the filter portion can be made similar to that of one end of a first paper filter used in a flavor inhalation article without a control member. According to the fifth feature, it is possible to prevent powder-containing substances from migrating toward the substrate portion. According to the sixth feature, it is possible to restrict the aerosol flow path in the first paper filter. According to the seventh feature, it is possible to maintain the aerosol delivery amount while restricting the aerosol flow path in the first paper filter. According to the eighth feature, it is possible to improve the powder delivery efficiency compared to a configuration in which a hollow member is not provided in the second paper filter. According to the ninth feature, the material constituting the supply path member can be substantially the same as that of the second paper filter. According to the tenth feature, a cross section taken perpendicular to the direction of the aerosol flowing inside the supply channel can be circular. According to the eleventh feature, the powder delivery efficiency can be improved compared to a configuration in which the length along the longitudinal direction of the filter portion of the supply channel member is shorter than that of the second paper filter. According to the twelfth feature, the amount of powder delivered during inhalation can be maintained while filtering the aerosol. According to the thirteenth feature, the user can easily crush the powder-containing object. According to the fourteenth to sixteenth features, the possibility of insufficient external force being applied to the powder-containing object can be reduced. According to the seventeenth feature, powder with a particle size suitable for inhalation can be obtained. According to the eighteenth feature, compared to a configuration without a tubular member between the substrate portion and the first paper filter, a new flavor and aroma can be imparted while maintaining the amount of aerosol delivered during inhalation.According to the nineteenth feature, the delivery efficiency of powder during inhalation can be improved compared to a configuration in which air does not flow from the outside to the inside.

[0007] 1A is a diagram showing a longitudinal section of a flavor inhalation article according to the first embodiment. FIG. 1B is a schematic diagram showing an example of the configuration of an inhalation device according to the first embodiment. FIG. 1C is a diagram showing an example of the configuration of a first filter according to the first embodiment, where (A) is a diagram showing an example of a cross section of section I-I in FIG. 1, and (B) is a diagram showing an example of a cross section of section II-II in FIG. 1. FIG. 1D is a diagram showing another example of the configuration of a first filter according to the first embodiment, where (A) is a diagram showing an example of a cross section of section I-I in FIG. 1, and (B) is a diagram showing another example of a cross section of section II-II in FIG. 1. FIG. 1E is a diagram showing the configuration of a second filter according to the first embodiment. FIG. 1C is a diagram showing another example of the longitudinal section of a flavor inhalation article according to the first embodiment. FIG. 1D is a diagram showing another example of the longitudinal section of a flavor inhalation article according to the first embodiment, where (A) is a diagram showing a longitudinal section of a flavor inhalation article in which a limiting member having a sharp first side is arranged, and (B) is a diagram showing a longitudinal section of a flavor inhalation article in which a limiting member having a width that decreases from the second side to the first side is arranged. 1A and 1B are diagrams showing another example of a longitudinal section of a flavor inhalation article according to a first embodiment, in which (A) shows a state in which a restricting member having the same size in the center line direction as the first filter is positioned within the first filter, and (B) shows a state in which a plurality of restricting members are positioned within the first filter. 1B are diagrams showing another example of a longitudinal section of a flavor inhalation article according to a second embodiment. 1C are diagrams showing another example of a longitudinal section of a flavor inhalation article according to a second embodiment, in which (A) shows a state in which a restricting member having the same size in the center line direction as the first filter is positioned within the first filter, and a communicating hole is provided in the region where the first filter is located, and (B) shows a state in which a restricting member having the same size in the center line direction as the first filter is positioned within the first filter, and a communicating hole is provided in the region where the second filter is located. 1D are diagrams showing another example of a longitudinal section of a flavor inhalation article according to a second 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 diagram showing a longitudinal section of a flavor inhalation article 1 according to the first embodiment. Fig. 2 is a schematic diagram showing an example of the configuration of an inhalation device 100 according to the first embodiment. The flavor inhalation article 1 according to the first embodiment includes a substrate section 10 and a filter section 30. The flavor inhalation article 1 may also include a cooling section 20. The mouthpiece segment 50 may be held in the mouth by the user during inhalation, and in the example of Fig. 1 includes the cooling section 20 and the filter section 30. The substrate section 10 is formed in a cylindrical shape. Hereinafter, the direction of the center line CL of the substrate section 10 may be referred to as the "center line direction." The flavor inhalation article 1 further includes tipping paper 40 that integrates the substrate section 10, the cooling section 20, and the filter section 30 by being wound in this order in the center line direction. Hereinafter, one end side in the center line direction (left side in FIG. 1 ) may be referred to as the first side, and the other end side in the center line direction (right side in FIG. 1 ) may be referred to as the second side. The first side is the end side that is inserted into the inhalation device 100 and is the upstream side in the flow of aerosol during inhalation. The second side is the opposite side to the first side and is the end side that the user holds in their mouth for inhalation and is the downstream side in the flow of aerosol during inhalation. Furthermore, a cross section along the center line direction is referred to as a "longitudinal cross section," and a cross section cut along a plane perpendicular to the center line direction is defined as a "transverse cross section."

[0010] [Usage of Flavor Inhalation Article 1] The flavor inhalation article 1 according to the first embodiment is used in a non-combustion heating type inhalation device 100. As shown in Fig. 2, the inhalation device 100 includes a power supply unit 111 that stores power and supplies power to each component of the inhalation device 100, a sensor unit 112 that detects various information related to the inhalation device 100, and a notification unit 113 that notifies the user of the information. The inhalation device 100 also includes a memory unit 114 that stores various information for the operation of the inhalation device 100, a communication unit 115 that transmits and receives information between the inhalation device 100 and other devices, and a control unit 116 that controls the overall operation of the inhalation device 100. The inhalation device 100 also includes a heating unit 121 that heats the flavor inhalation article 1, a holding unit 140 that holds the flavor inhalation article 1, an opening 142 that connects the internal space 141 to the outside, and a heat insulating unit 144 that prevents heat transfer from the heating unit 121 to other components of the inhalation device 100. In the inhalation device 100, the flavor inhalation article 1 is held in the holding portion 140, and the user inhales.

[0011] The heating unit 121 heats the substrate 10 of the flavor inhalation article 1. The heating unit 121 is made of any material, such as metal or polyimide. For example, the heating unit 121 is configured in a film shape and is arranged to cover the outer periphery of the holding unit 140. When the heating unit 121 generates heat, the aerosol source 11 included in the flavor inhalation article 1 is heated from the outer periphery of the flavor inhalation article 1. The heating unit 121 generates heat when power is supplied from the power supply unit 111. As an example, power may be supplied when the sensor unit 112 detects that a predetermined user input has been made. When the temperature of the flavor inhalation article 1 heated by the heating unit 121 reaches a predetermined temperature, the user can inhale. Thereafter, when the sensor unit 112 detects that a predetermined user input has been made, power supply may be stopped. 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.

[0012] The heat insulating section 144 is disposed so as to cover at least the outer periphery of the heating section 121. For example, the heat insulating section 144 is made of a vacuum heat insulating material, an aerogel heat insulating material, or the like. Note that the vacuum heat insulating material is a heat insulating material in which, for example, glass wool, silica (silicon powder), or the like is wrapped in a resin film to create a high vacuum state, thereby reducing the heat conduction by gas to as close to zero as possible.

[0013] [Flavor inhalation article 1] The flavor inhalation article 1 is a non-combustion heating type flavor inhalation article. The cross section of the flavor inhalation article 1 is substantially circular, and its circumference can be changed appropriately according to the size of the product, but is usually 16 mm to 27 mm, and preferably 21 mm to 23 mm. If the cross section is not circular, the circumference is assumed to be a circle having the same area as the cross section, and the circumference of that circle is used. The size of the flavor inhalation article 1 in the center line direction can be changed appropriately according to the size of the product, but is usually 40 mm to 100 mm, and preferably 50 mm to 70 mm.

[0014] [Substrate Unit 10] The substrate unit 10 includes an aerosol source 11 that generates vapor that generates an aerosol when heated, and a cigarette paper 12 that covers the outer periphery of the aerosol source 11. The substrate unit 10 may also include a tip member 13 that prevents the aerosol source 11 from falling off from the first end surface of the substrate unit 10. The substrate unit 10 is formed into a cylindrical shape by wrapping the aerosol source 11 and the tip member 13 around the cigarette paper 12. The aerosol source 11 may be derived from tobacco, such as a processed product obtained by molding tobacco shreds or tobacco raw materials into granules, sheets, or powder. The aerosol source 11 may also include a non-tobacco-derived material made from plants other than tobacco (e.g., mint, herbs, etc.). As an example, the aerosol source 11 may include a flavoring. The type of flavoring is not particularly limited, and menthol is particularly preferred from the viewpoint of imparting a favorable flavor. These flavorings may be used alone or in combination. When the inhalation device 100 is a medical inhaler, the aerosol source 11 may contain a drug to be inhaled by a patient. Note that the aerosol source 11 is not limited to a solid, and may be, for example, a polyhydric alcohol such as glycerin or propylene glycol, or a liquid such as water. At least a portion of the base material 10 is accommodated in the internal space 141 of the holding portion 140 when the flavor inhalation article 1 is held in the holding portion 140.

[0015] The substrate 10 formed by wrapping the aerosol source 11 in the wrapping paper 12 preferably has a cylindrical shape that satisfies the aspect ratio defined by the mathematical formula 1 of 1 or more.

[0016] (Equation 1) Aspect ratio = h / w

[0017] In Formula 1, w is the width of the cross section of the substrate 10, h is the size of the substrate 10 in the center line direction, and it is preferable that h≧w. The shape of the cross section is not limited and may be polygonal, rounded polygonal, circular, elliptical, etc., and the width w is the diameter when the cross section is circular, the major axis when the cross section is elliptical, or the diameter of the circumscribed circle or the major axis of the circumscribed ellipse when the cross section is polygonal or rounded polygonal. The width of the cross section of the aerosol source 11 constituting the substrate 10 is preferably 4 mm or more and 9 mm or less.

[0018] The size h of the substrate 10 in the centerline direction can be changed appropriately according to the size of the product, but is typically 8 mm or more, and preferably 10 mm or more. The size h of the substrate 10 in the centerline direction is typically 70 mm or less, and preferably 30 mm or less. The ratio of the size h of the substrate 10 to the size of the flavor inhalation article 1 in the centerline direction is not particularly limited, but from the viewpoint of the balance between the delivery amount and the aerosol temperature, it is typically 10% or more, preferably 20% or more, more preferably 25% or more, and even more preferably 30% or more. The ratio of the size h of the substrate 10 to the size of the flavor inhalation article 1 is typically 80% or less, preferably 70% or less, more preferably 60% or less, even more preferably 50% or less, particularly preferably 45% or less, and most preferably 40% or less.

[0019] The content of the aerosol source 11 in the substrate 10 is not particularly limited, but may be 200 mg to 800 mg, and preferably 250 mg to 600 mg. This range is particularly suitable for a substrate 10 having a circumference of 22 mm and a size of 20 mm in the centerline direction.

[0020] Here, the aerosol source 11 containing tobacco shreds will be described. The material of the tobacco shreds contained in the aerosol source 11 is not particularly limited, and known materials such as lamina or ribs can be used. Alternatively, the aerosol source 11 may be a shredded tobacco shredder (a sheet made by grinding dried tobacco leaves to an average particle size of 20 μm to 200 μm, homogenizing the shredded tobacco, and processing it into a sheet (hereinafter simply referred to as a homogenized sheet). Furthermore, the aerosol source 11 may be a strand type, in which a homogenized sheet having a size approximately the same as the size of the substrate 10 in the center line direction is shredded approximately parallel to the center line direction of the substrate 10 and filled with the shredded tobacco. The width of the tobacco shreds is preferably 0.5 mm to 2.0 mm when filled with the aerosol source 11.

[0021] Various types of tobacco can be used for the tobacco shreds and homogenized sheet production. 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. Details of tobacco varieties are disclosed in the "Encyclopedia of Tobacco," published by the Tobacco Research Center on March 31, 2009. There are several conventional methods for producing homogenized sheets, i.e., grinding tobacco leaves and processing them into homogenized sheets. The first method is to produce a paper-making sheet using a papermaking process. The second method involves mixing a suitable solvent, such as water, with ground tobacco leaves to homogenize them, then casting a thin layer of the homogenized material onto a metal plate or metal belt and drying it to produce a cast sheet. The third method involves mixing a suitable solvent, such as water, with ground tobacco leaves to homogenize them, and extruding the mixture into a sheet to produce a rolled sheet. Details of the types of homogenizing sheets are disclosed in "Encyclopedia of Tobacco, Tobacco Research Center, March 31, 2009."

[0022] The moisture content of the aerosol source 11 can be 10% by mass or more and 15% by mass or less, and is preferably 11% by mass or more and 13% by mass or less, based on the total amount of the aerosol source 11. Such a moisture content suppresses the occurrence of stains during rolling and improves the suitability for rolling up during the production of the base material 10.

[0023] The aerosol source 11 is not particularly limited and may contain extracts and / or their constituent components from various natural products depending on the intended use. Examples of extracts and / or their constituent components include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof. The content of the extracts and / or their constituent components in the aerosol source 11 is not particularly limited, and from the viewpoints of generating sufficient aerosol and imparting a favorable flavor, it is typically 5% by mass or more, and preferably 10% by mass or more, relative to the total amount of the aerosol source 11. Furthermore, the content of the extracts and / or their constituent components in the aerosol source 11 is typically 50% by mass or less, and preferably 15% by mass or more and 25% by mass or less.

[0024] The packing density of the aerosol source 11 is not particularly limited, but is usually 250 mg / cm from the viewpoint of ensuring the performance of the flavor inhalation article 1 and imparting a good flavor. ３ or more, preferably 300 mg / cm ３ The packing density of the aerosol source 11 is usually 400 mg / cm ３ or less, preferably 350 mg / cm ３ The following is the result.

[0025] The aerosol source 11 may also be made of a tobacco sheet. The number of tobacco sheets may be one, or two or more.

[0026] In the case where the aerosol source 11 is composed of a single tobacco sheet, for example, the tobacco sheet may be filled with a tobacco sheet having one side approximately the same size as the centerline of the filling material, folded multiple times horizontally in the centerline of the filling material (so-called gathered sheet).In addition, the tobacco sheet may be filled with a tobacco sheet having one side approximately the same size as the centerline of the filling material, wound in a direction perpendicular to the centerline of the filling material.

[0027] In a case where the aerosol source 11 is composed of two or more tobacco sheets, for example, a plurality of tobacco sheets, each having a side approximately the same size as the centerline of the filling material, are wound in a direction perpendicular to the centerline of the filling material so as to be concentrically arranged. "Concentrically arranged" means that the centers of all the tobacco sheets are located at approximately the same position. The two or more tobacco sheets may all have the same composition or physical properties, or some or all of the tobacco sheets may have different compositions or physical properties. Furthermore, the thicknesses of the tobacco sheets may be the same or different. While there are no limitations on the thickness of each tobacco sheet, a thickness of 150 μm to 1000 μm is preferred, and a thickness of 200 μm to 600 μm is more preferred, considering the balance between heat transfer efficiency and strength.

[0028] The aerosol source 11 can be manufactured by preparing a laminate of multiple tobacco sheets with different widths, stacking them so that the width decreases from the first side to the second side, and then passing the laminate through a winding tube to roll and form it. According to this manufacturing method, the multiple tobacco sheets extend in the centerline direction and are arranged concentrically around the centerline CL. In this manufacturing method, the laminate is preferably prepared so that non-contact portions are formed between adjacent tobacco sheets after rolling and forming. The presence of non-contact portions (gaps) between the multiple tobacco sheets, where the tobacco sheets do not contact, can ensure flavor flow paths and improve the delivery efficiency of flavor components. Meanwhile, heat from the heating unit 121 can be transferred to the outer tobacco sheets via the contact portions between the multiple tobacco sheets, ensuring high heat transfer efficiency. In order to provide a non-contact portion between multiple tobacco sheets where the tobacco sheets do not come into contact, for example, a laminate can be prepared by using an embossed tobacco sheet, laminating adjacent tobacco sheets without bonding the entire surfaces of the sheets together, laminating adjacent tobacco sheets with only a portion of the sheets bonded together, or laminating adjacent tobacco sheets with only a light bonding of the entire surfaces or a portion of the sheets together so that they can be peeled off after rolling and molding. When preparing a substrate 10 including cigarette paper 12, the cigarette paper 12 may be placed on the end surface of the first side of the laminate.

[0029] Tobacco sheets can be appropriately manufactured by known methods such as papermaking, slurrying, rolling, etc. The homogenized sheet described above can also be used. In the case of papermaking, tobacco sheets can be manufactured by a method including the following steps: 1) Dried tobacco leaves are roughly crushed, extracted with water, and separated into an aqueous extract and a residue. 2) The aqueous extract is concentrated by drying under reduced pressure. 3) Pulp is added to the residue, and the residue is fiberized in a refiner, followed by papermaking. 4) A concentrated aqueous extract is added to the paper-made sheet and dried to obtain a tobacco sheet. In this case, a step of removing some components such as nitrosamines may be added (see JP-A 2004-510422). In the case of the slurry method, tobacco sheets can be manufactured by a method including the following steps: 1) Water, pulp, and a binder are mixed with crushed tobacco leaves. 2) The mixture is thinly spread (cast) and dried. In this case, a step of removing some components such as nitrosamines may be added to a slurry containing a mixture of water, pulp, a binder, and crushed tobacco leaves by ultraviolet light or X-ray irradiation.

[0030] Alternatively, as described in International Publication No. 2014 / 104078, a nonwoven tobacco sheet can be produced by a method including the following steps: 1) mixing powdered tobacco leaves with a binder; 2) sandwiching the mixture between nonwoven fabrics; and 3) forming the laminate into a specific shape by thermal welding to obtain a nonwoven tobacco sheet. The types of tobacco leaves used as raw material in each of the above methods can be the same as those described for the aerosol source 11 containing tobacco shreds. The composition of the tobacco sheet is not particularly limited, but, for example, the content of the tobacco raw material (tobacco leaves) is preferably 50% by mass or more and 95% by mass or less relative to the total mass of the tobacco sheet. The tobacco sheet may also contain a binder, and examples of such binders include guar gum, xanthan gum, carboxymethylcellulose, and sodium salt of carboxymethylcellulose. The amount of binder is preferably 1% by mass or more and 10% by mass or less relative to the total mass of the tobacco sheet. The tobacco sheet may further contain other additives, such as fillers such as pulp.

[0031] The configuration of the cigarette paper 12 used in the substrate 10 is not particularly limited and can be any common embodiment, 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 mixing non-wood pulp commonly used in cigarette papers 12 for tobacco products, such as flax pulp, hemp pulp, sisal pulp, or esparto. Pulp types that can be used include chemical pulp produced by kraft cooking, acidic, neutral, or alkaline sulfite cooking, soda cooking, etc., ground pulp, chemi-ground pulp, and thermomechanical pulp.

[0032] The cigarette paper 12 is produced using pulp in a papermaking process using a Fourdrinier paper machine, a cylinder paper machine, a combined cylinder / short-cylinder paper machine, or the like, by adjusting and uniforming the texture. If necessary, a wet strength agent may be added to impart water resistance to the cigarette paper 12, or a sizing agent may be added to adjust the printing quality of the cigarette paper 12. Furthermore, internal papermaking aids such as aluminum sulfate, various anionic, cationic, nonionic, or amphoteric retention aids, drainage aids, and paper strength agents, as well as papermaking additives such as dyes, pH adjusters, antifoaming agents, pitch control agents, and slime control agents may be added.

[0033] The basis weight of the base paper for the cigarette paper 12 is, for example, usually 20 gsm or more, and preferably 25 gsm or more. On the other hand, the basis weight is usually 65 gsm or less, preferably 50 gsm or less, and more preferably 45 gsm or less. The thickness of the cigarette paper 12 is not particularly limited, and from the viewpoints of rigidity, breathability, and ease of adjustment during papermaking, it is usually 10 μm or more, preferably 20 μm or more, and more preferably 30 μm or more. Furthermore, the thickness of the cigarette paper 12 is usually 100 μm or less, preferably 75 μm or less, and more preferably 50 μm or less.

[0034] The shape of the cigarette paper 12 can be, for example, square or rectangular. When used as cigarette paper 12 for wrapping the aerosol source 11 and the tip member 13, the length of one side can be, for example, approximately 8 mm to 70 mm, and the length of the other side can be, for example, 15 mm to 28 mm, with the preferred length of the other side being, for example, 22 mm to 24 mm, and more preferably, approximately 23 mm. When the aerosol source 11 is wrapped in the cigarette paper 12 in a cylindrical shape, for example, an end of the cigarette paper 12 and an end of the cigarette paper 12 opposite the end of the cigarette paper 12 are overlapped by approximately 2 mm in the circumferential direction and glued together to form a cylindrical paper tube shape in which the aerosol source 11 is filled. The size of the rectangular cigarette paper 12 can be determined depending on the size of the substrate 10.

[0035] In addition to the above-mentioned pulp, the cigarette paper 12 may contain a filler. The content of the filler can be 10% by mass or more and 60% by mass or less, and preferably 15% by mass or more and 45% by mass or less, relative to the total mass of the cigarette paper 12. In the cigarette paper 12, within the preferred basis weight range (25 gsm or more and 45 gsm or less), the content of the filler is preferably 15% by mass or more and 45% by mass or less. Furthermore, when the basis weight is 25 gsm or more and 35 gsm or less, the content of the filler is preferably 15% by mass or more and 45% by mass or less, and when the basis weight is 35 gsm or more and 45 gsm or less, the content of the filler is preferably 25% by mass or more and 45% by mass or less. As the filler, calcium carbonate, titanium dioxide, kaolin, etc. can be used, but calcium carbonate is preferably used from the viewpoint of enhancing flavor and whiteness, etc.

[0036] Various auxiliary agents other than the base paper and fillers may be added to the cigarette paper 12. For example, a water resistance improver may be added 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. A paper strength agent may also be added as an auxiliary agent, such as polyacrylamide, cationic starch, oxidized starch, CMC, polyamide epichlorohydrin resin, and polyvinyl alcohol. It is known that the use of a very small amount of oxidized starch in particular improves air permeability (see JP 2017-218699 A).

[0037] A coating agent may be added to at least one of the two surfaces, the front and back surfaces, of the wrapping paper 12. There are no particular limitations on the coating agent, but a coating agent that can form a film on the surface of the paper and reduce liquid permeability is preferred. Examples of the coating agent include alginic acid and its salts (e.g., sodium salts), polysaccharides such as pectin, cellulose derivatives such as ethyl cellulose, methyl cellulose, carboxymethyl cellulose, and nitrocellulose, starch and its derivatives (e.g., ether derivatives such as carboxymethyl starch, hydroxyalkyl starch, and cationic starch, and ester derivatives such as starch acetate, starch phosphate, and starch octenyl succinate).

[0038] [Tipping Paper 40] The tipping paper 40 is wound around the outer peripheral surfaces of the substrate section 10, the cooling section 20, and the filter section 30. The shape of the tipping paper 40 is not particularly limited, and can be, for example, square or rectangular. The basis weight of the tipping paper 40 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 40 is not particularly limited, but is usually 0 Coresta units or more and 30,000 Coresta units or less, and preferably more than 0 Coresta units and 10,000 Coresta units or less. Here, "air permeability" is a value measured in accordance with ISO2965:2009, and is the value of the air permeability measured in accordance with ISO2965:2009, and is 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 )

[0039] The composition of the tipping paper 40 is not particularly limited and can be of a general type, such as a type 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 types that can be used include chemical pulp produced by kraft cooking, acidic, neutral, or alkaline sulfite cooking, soda cooking, etc., ground pulp, chemi-ground pulp, thermomechanical pulp, etc. The tipping paper 40 may be produced by the above-mentioned production method or may be a commercially available product.

[0040] In addition to the materials described above, the tipping paper 40 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. In particular, it is preferable that the tipping paper 40 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.

[0041] In addition to the materials and fillers described above, the tipping paper 40 may contain various auxiliary agents. For example, the tipping paper 40 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.

[0042] A coating agent may be added to at least one of the two surfaces, the front and back surfaces, of the tipping paper 40. The coating agent is not particularly limited, but a coating agent that can form a film on the surface and reduce liquid permeability is preferred. A portion of the outer surface of the tipping paper 40 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 40 from the lips without substantial adhesion when the filter portion 30 of the flavor inhalation article 1 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 40 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 40.

[0043] [Cooling Section 20] The cooling section 20 is positioned adjacent to the substrate section 10 and the filter section 30 and is formed by wrapping the sheet 21 around it so that the cross section of the cooling section 20 is hollow (hollow). The cooling section 20 cools the vapor generated by heating the substrate section 10 to generate an aerosol. The cross section of the cooling section 20 is substantially circular, and its circumference can be adjusted to suit the size of the product, but is preferably approximately the same as the circumference of the first filter 31 described below. If the cross section is not circular, the circumference is assumed to be a circle having the same area as the cross section, and the circumference of that circle is used. The size of the cooling section 20 in the centerline direction can be adjusted to suit 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 size of the cooling section 20 in the centerline direction is typically 35 mm or less, preferably 30 mm or less, and more preferably 25 mm or less. Furthermore, it is preferable that the size of the cooling section 20 in the center line direction is a size that satisfies any combination of the above-mentioned lower limit and upper limit. By setting the size of the cooling section 20 in the center line direction to be equal to or greater than the above-mentioned lower limit, a sufficient cooling effect can be ensured to obtain a good flavor, and by setting it to be equal to or less than the above-mentioned upper limit, loss of the generated steam and aerosol due to adhesion to the sheet 21 can be suppressed.

[0044] For example, the cooling unit 20 is a paper tube formed by winding a sheet 21 made of paper. Specifically, the cooling unit 20 is a so-called spiral paper tube, which is a paper tube formed by bonding multiple sheets 21 including at least paper together and winding them in a spiral shape. The spiral paper tube manufacturing method makes it possible to easily form a paper tube with a circular cross section. By adopting a spiral paper tube for the cooling unit 20, the area of ​​the cooling unit 20 can be reduced while improving the strength of the cooling unit 20. Furthermore, by combining and bonding a sheet member including a fragrance component, a flavor component, tobacco powder, etc. with paper, a new flavor or taste can be imparted to the aerosol. Alternatively, the cooling unit 20 may be a so-called straight paper tube, which is a paper tube formed by winding paper multiple times into a cylindrical shape. The straight paper tube manufacturing method allows for a smaller amount of glue to be used to bond the paper compared to the spiral paper tube manufacturing method. The cooling unit 20 may also be a paper tube formed by stacking multiple sheets 21 including at least paper. By stacking a plurality of sheets 21, the strength of the cooling section 20 can be maintained even when the basis weight of each of the sheets 21 is small.

[0045] The thickness of the sheet 21 is not particularly limited and may be, for example, 50 μm to 500 μm, or 100 μm to 250 μm. The material of the sheet 21 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. The cooling section 20 is formed by wrapping the sheet 21, but this is an example of a cylindrical member formed into a cylindrical shape, and is not limited to this configuration as long as the cross section is hollow. The cooling section 20 may be formed, for example, from a tube made of synthetic resin or the like that already has a hollow cross section.

[0046] The cooling unit 20 is provided with a plurality of through-holes 60 (also referred to as "ventilation filters (Vf)" in the present technical field) arranged circumferentially and concentrically. The through-holes 60 are holes that penetrate the sheet 21. Examples of the hole shapes include polygonal, rounded polygonal, circular, and elliptical. The through-holes 60 are present in an area where air can flow in from the outside of the flavor inhalation article 1, in other words, in an area that protrudes from the opening 142 when the flavor inhalation article 1 is held in the holding unit 140 of the inhalation device 100.

[0047] The presence of the through-holes 60 allows the concentration of the inhaled flavor components and aerosol to be adjusted. Furthermore, the presence of multiple through-holes 60 allows air to flow into the cooling section 20 from the outside during inhalation, lowering the temperature of the steam and air flowing in from the substrate section 10. Furthermore, by positioning the through-holes 60 in the cooling section 20 within a region 4 mm or more from the boundary between the cooling section 20 and the filter section 30 toward the cooling section 20, not only can the cooling capacity be improved, but the retention of the substance (product) generated by heating within the cooling section 20 can be suppressed, thereby improving the delivery amount of the product. Furthermore, when the substrate section 10 is heated, the steam generated using the aerosol as a condensation nucleus comes into contact with air from the outside, lowering its temperature and liquefying, thereby facilitating the generation of the aerosol.

[0048] When a plurality of concentric through holes 60 in the cooling section 20 are treated as one through hole group, the number of through hole groups may be one or may be two or more. When two or more through hole groups are present, from the viewpoint of improving the delivery amount of components generated by heating, it is preferable that no through hole group is provided in a region less than 4 mm from the boundary between the cooling section 20 and the filter section 30 toward the cooling section 20. Furthermore, when the flavor inhalation article 1 is configured such that the substrate section 10, the cooling section 20, and the filter section 30 are wrapped with tipping paper 40, it is preferable that the tipping paper 40 has an air hole provided directly above the through hole 60 provided in the cooling section 20. When producing such a flavor inhalation article 1, tipping paper 40 having an air hole overlapping the through hole 60 may be prepared and wrapped, but from the viewpoint of ease of production, it is preferable to produce a flavor inhalation article 1 without a through hole 60, and then drill holes that pass through both the cooling section 20 and the tipping paper 40 at the same time.

[0049] From the viewpoint of improving the delivery of the product by heating, the region where the through-holes 60 are present is not particularly limited as long as it is a region of 4 mm or more from the boundary between the cooling section 20 and the filter section 30 toward the cooling section 20, but from the viewpoint of further improving the delivery of the product, it is preferably a region of 4.5 mm or more, more preferably a region of 5 mm or more, and even more preferably a region of 5.5 mm or more. Furthermore, from the viewpoint of ensuring the cooling function, the region where the through-holes 60 are present is preferably a region of 15 mm or less, more preferably a region of 10 mm or less, and even more preferably a region of 7 mm or less from the boundary between the cooling section 20 and the filter section 30.

[0050] Furthermore, when the boundary between the cooling section 20 and the substrate 10 is used as a reference, if the size of the cooling section 20 in the centerline direction is 20 mm or more, the region where the through-holes 60 exist is preferably a region of 5 mm or more, more preferably a region of 10 mm or more, and even more preferably a region of 13 mm or more from the boundary between the cooling section 20 and the substrate 10 in the direction toward the cooling section 20, from the viewpoint of ensuring the cooling function. Furthermore, from the viewpoint of improving the delivery of the product by heating, the region where the through-holes 60 exist is preferably a region of 16 mm or less, more preferably a region of 15.5 mm or less, even more preferably a region of 15 mm or less, and particularly preferably a region of 14.5 mm or less from the boundary between the cooling section 20 and the substrate 10.

[0051] The through holes 60 are arranged so that the air inflow rate through the through holes 60 is 10% by volume or more and 90% by volume or less when inhaled at 17.5 ml / sec in an automatic smoking machine. This "air inflow rate" refers to the volumetric rate of air inhaled through the through holes 60, assuming that the rate of air inhaled from the second end (suction end) in the centerline direction is 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. These air inflow rates can be achieved, for example, by selecting the number of through holes 60 per through hole group from the range of 5 to 50, selecting the diameter of the through holes 60 from the range of 0.1 mm to 0.5 mm, or by combining these selections. The air inflow rate can be measured using a roll quality measuring device (SODIMAX D74 / SODIM manufactured by SAS) in accordance with ISO 9512.

[0052] [Filter Unit 30] FIG. 3 shows an example of the configuration of the first filter 31 according to the first embodiment, where (A) is a cross-sectional view taken along line II-II in FIG. 1, and (B) is a cross-sectional view taken along line II-II in FIG. 1. FIG. 4 shows another example of the configuration of the first filter 31 according to the first embodiment, where (A) is a cross-sectional view taken along line II-I in FIG. 1, and (B) is a cross-sectional view taken along line II-II in FIG. 1. FIG. 5 shows the configuration of the second filter 32 according to the first embodiment, where (A) is a cross-sectional view taken along line II-III in FIG. 1. The filter unit 30 is formed in a columnar shape whose size in the centerline direction is greater than the width of the cross section. Therefore, the filter unit 30 is arranged so that its longitudinal direction coincides with the centerline direction. The filter unit 30 includes a first filter disposed on the substrate unit 10 side, a second filter 32 located on the second side of the first filter 31, and a powder-containing material 34 contained in a hollow cavity 33 formed between the first filter 31 and the second filter 32. The first filter 31 is provided with a restricting member 36 that restricts the flow path of the aerosol within the first filter 31, and the second filter 32 is provided with a supply path member 37 that supplies powder of the powder-containing material 34 from the cavity 33 to the second end. The filter unit 30 is connected (coupled) to the cooling unit 20 by winding the cooling unit 20 and the filter unit 30 together using tipping paper 40. The wrapper paper 35 may not be provided.

[0053] The cross sections of the first filter 31 and the second filter 32 of the filter unit 30 are substantially circular, and their circumferences can be varied as needed to suit the size of the product, but can be 22 mm to 25 mm. If the cross section is not circular, the circumference is assumed to be a circle having the same area as the cross section, and the circumference of that circle is used. The size of the filter unit 30 in the centerline direction can be varied as needed to suit the size of the product, but is typically 5.0 mm to 30.0 mm, preferably 12.5 mm to 27.5 mm, and more preferably 15.0 mm to 25.0 mm.

[0054] The airflow resistance per 10 mm of the size in the center line direction of the filter part 30 is not particularly limited, but is usually 0 mmH ２O or more 100mmH ２ 0 or less, 10 mmH ２ O or more 80mmH ２ It is preferable that the pressure is 10 mmH or less. ２ O or more 50mmH ２ It is more preferable that the airflow resistance is 0 or less. The airflow resistance 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 filter unit 30 refers to the air pressure difference between the first side and the second side when air is flowed at a predetermined air flow rate (17.5 cc / min) from the first side to the second side in a state where air does not pass through the side surface of the filter unit 30. The unit is generally mmH ２ It is represented by O.

[0055] The first filter 31 and the second filter 32 are so-called paper filters, and have gaps 31b, 32b formed therein as channels through which aerosols can pass. The first filter 31 and the second filter 32 are paper filters through which aerosols pass in the centerline direction during inhalation. For example, the first filter 31 and the second filter 32 are paper filters formed by filling with sheet members 31a, 32a. Specifically, the first filter 31 and the second filter 32 are paper filters formed by filling with sheet members 31a, 32a so as to ensure a passage path for aerosols extending in the centerline direction.

[0056] The packing density of the sheet members 31a and 32a is not particularly limited, but from the viewpoint of the balance between the airflow resistance and the filtration rate, it is usually 80 mg / cm ３ 720mg / cm or more ３ The packing density of the sheet member 31a in the region where the limiting member 36 is not disposed as shown in FIG. 3A is 80 mg / cm ３ More than 380mg / cm ３ Preferably, it is 150 mg / cm or less. ３ 240mg / cm or more ３ It is more preferable that the packing density of the sheet member 31a in the region where the limiting member 36 is disposed as shown in FIG. 3B is 105 mg / cm or less.３ 720mg / cm or more ３ Preferably, it is 170 mg / cm or less. ３ More than 480mg / cm ３ It is more preferable that the packing density of the sheet member 32a of the second filter in which the supply path member 37 as shown in FIG. 5A is arranged is 105 mg / cm. ３ More than 720g / cm ３ Preferably, it is 170 mg / cm or less. ３ 480g / cm or more ３ It is more preferable that the packing density of the sheet member 31 a is an example of the density of the first filter 31 , and the packing density of the sheet member 32 a is an example of the density of the second filter 32 .

[0057] The density of the sheet members 31a and 32a themselves is not particularly limited, but from the viewpoint of the balance between the filtering ability of the filter and the airflow resistance, the lower limit is 0.05 g / cm ３ More preferably, 0.5 g / cm ３ or more, the upper limit is 1.50 g / cm ３ Preferably, the density of the sheet members 31a, 32a themselves satisfies any combination of the above-mentioned lower and upper limits. As the density of the sheet members 31a, 32a increases, the gaps between the fibers of the sheet members 31a, 32a decrease, thereby reducing the amount of aerosols that get into the gaps between the fibers of the sheet members 31a, 32a. The thickness of the sheet members 31a, 32a is not particularly limited, but from the viewpoint of the balance between the filtering ability and the airflow resistance of the filter, the lower limit is preferably 0.03 mm or more, more preferably 0.05 mm or more, and the upper limit is preferably 1.20 mm or less, more preferably 0.5 mm or less. Preferably, the thickness of the sheet members 31a, 32a satisfies any combination of the above-mentioned lower and upper limits.

[0058] The material of the sheet members 31a, 32a is not particularly limited as long as it can achieve the general functions of a filter. However, paper or nonwoven fabric, such as pulp paper primarily composed of pulp, is preferred, and paper is more preferred. Other materials, such as polymer sheets and metal sheets, may also be used for the sheet members 31a, 32a. Typical filter functions include, for example, adjusting the amount of air mixed in when inhaling aerosols, reducing flavors, and reducing nicotine and tar, but it is not necessary for the sheet members 31a, 32a to have all of these functions. Furthermore, in a non-combustion heating flavor inhalation article 1, which tends to produce fewer components and have a lower filling rate of the aerosol source 11 compared to cigarette products, preventing the detachment of components contained within the flavor inhalation article 1 while suppressing filtering function is also an important function. The sheet member 31a of the first filter 31 and the sheet member 32a of the second filter 32 may be made of different materials.

[0059] In this embodiment, the first filter 31 and the second filter 32 are formed of sheet members 31a, 32a that are folded, wrinkled, gathered, or the like, and are filled to ensure aerosol passage paths extending in the centerline direction. Specifically, the first filter 31 and the second filter 32 are paper filters in which the sheet members 31a, 32a are filled to form voids 31b, 32b along the longitudinal direction of the filter section 30, and the sheet members 31a, 32a are gathered. Here, "gathered" means that the sheet members are filled in a state where they are folded back multiple times horizontally in the centerline direction of the first filter 31 and the second filter 32. The sheet members 31a, 32a are entirely crimped to efficiently form voids in the sheet members 31a, 32a. The crimping process is a process of forming wrinkles in the sheet. For example, by passing the sheet to be processed between a pair of rollers having a plurality of protrusions on the surface, wrinkles extending perpendicular to the sheet conveying direction can be formed on both the front and back surfaces of the sheet.

[0060] The first filter 31 and the second filter 32 are not limited to the configuration of this embodiment. For example, the sheet members 31a and 32a may be one sheet or two or more sheets. Furthermore, the sheet members 31a and 32a may not be folded or pleated, as long as an aerosol passageway extending in the centerline direction is secured. The first filter 31 may be a paper filter filled with a strip-shaped sheet member 31a, as shown in FIG. 4(A). The second filter 32 may be filled with a strip-shaped sheet member 32a, although not shown. Alternatively, for example, the first filter 31 may be a paper filter filled with string-shaped or spherical members made of the same material as the sheet member 31a. The second filter 32 may be a paper filter filled with string-shaped or spherical members made of the same material as the sheet member 32a.

[0061] A supply path member 37 is disposed in the second filter 32 so as to penetrate the second filter 32 in the centerline direction. The supply path member 37 connects the cavity 33 to the downstream end. The supply path member 37 has a cross section that can prevent the powder inclusions 34 from entering in a clumped state. Note that a plasticizer is preferably used in the second filter 32 to prevent deformation of the supply path member 37 when an external force is applied to the filter portion 30.

[0062] The wrapping paper 35 is not particularly limited in its form, but it is preferable to select specifications that prevent folds or wrinkles when the powder-containing aggregates 34 are crushed by applying external force. The wrapping paper 35 may include one or more adhesive seams. The adhesive may include a hot-melt adhesive, and the hot-melt adhesive may further include polyvinyl alcohol. Furthermore, when the filter unit 30 is composed of two or more components, it is preferable that the wrapping paper wraps each of these two or more components and then wraps them together with another wrapping paper. The material of the wrapping paper 35 is not particularly limited, and known materials can be used, and the wrapping paper may contain a filler such as calcium carbonate. The thickness of the wrapping paper 35 is not particularly limited, and is typically 20 μm to 140 μm, preferably 30 μm to 130 μm, and more preferably 30 μm to 120 μm. The basis weight of the paper roll 35 is not particularly limited, but is typically 20 gsm to 100 gsm, preferably 22 gsm to 95 gsm, and more preferably 23 gsm to 90 gsm. The air permeability of the paper roll 35 is not particularly limited, but is typically 0 Coresta units to 30,000 Coresta units, and preferably more than 0 Coresta units to 10,000 Coresta units. The paper roll 35 may be coated or uncoated, but is preferably coated with a desired material from the viewpoint of imparting functions other than strength and structural rigidity.

[0063] The cavity 33 is a space formed inside the filter unit 30, and is a cylindrical space surrounded by the second side surface of the first filter 31, the first side surface of the second filter 32, and the wrapper paper 35. The cavity 33 only needs to be large enough to accommodate the powder-inclusive material 34. When multiple powder-inclusive materials 34 are to be accommodated, the cavity 33 needs to be large enough to accommodate the multiple powder-inclusive materials 34. The cavity 33 is, for example, a space with a volume larger than the volume of the multiple powder-inclusive materials 34. The shape and number of the cavities 33 are not particularly limited.

[0064] The powder inclusion 34 is a mass of raw material powder, and is turned into powder by application of an external force. The external force may be, for example, a force stronger than the force applied during manufacturing or transportation, or a force stronger than the suction force during suction. An example of the external force is the force applied by a user's finger. For example, the breaking strength at which the powder inclusion 34 is turned into powder is 5 N or more and 60 N or less. Preferably, the breaking strength at which the powder inclusion 34 is turned into powder is 20 N or more and 30 N or less, more preferably 20 N or more and 25 N or less.

[0065] The shape of the powder inclusions 34 is not particularly limited, and may be a sphere, ellipsoid, cylinder, hollow cylinder, cone, pyramid, torus, or a polyhedron such as a cube or rectangular parallelepiped, or a combination of these shapes. The raw material powder constituting the powder inclusions 34 preferably accounts for 50 mass% or more of the total mass of the powder inclusions 34. Furthermore, at least a portion of the raw material powder of the powder inclusions 34 has a particle diameter that allows it to pass through the supply path member 37, preferably a particle diameter of 10 μm or more and 600 μm or less. In other words, it is preferable that raw material powder having a particle diameter of 10 μm or more and 600 μm or less accounts for 50 mass% or more of the total mass of the powder inclusions 34.

[0066] The powder inclusion 34 can be produced, for example, by adding an appropriate amount of water to a nucleating agent as a raw material powder, mixing the mixture, molding, and drying. A binder may also be added as a raw material for the powder inclusion 34. A flavoring component or a flavor component may also be added to the nucleating agent. Alternatively, the powder inclusion 34 may be, for example, a plastic capsule, a tablet, or granules containing the raw material powder.

[0067] Monosaccharides, disaccharides, polysaccharides, or derivatives thereof can be used as the nucleating agent of the powder inclusion 34. For example, ketotriose (dihydroxyacetone), aldotriose (glyceraldehyde), ketotetrose (erythrulose), aldotetrose (erythrose, threose), pentose ketopentose (ribulose, xylulose), aldopentose (ribose, arabinose, xylose, lyxose), deoxysugar (deoxyribose), ketohexose (psicose, fructose, sorbose, tagatose), aldohexose (allose, Examples of suitable nucleating agents include altrose, glucose, mannose, gulose, idose, galactose, and talose), deoxysugars (fucose, fuculose, and rhamnose), sedoheptulose, sucrose, lactose, maltose, trehalose, turanose, cellobiose, raffinose, melezitose, maltotriose, acarbose, stachyose, glucose, starch (amylose and amylopectin), cellulose, dextrin, glucan, and fructose. These monosaccharides, disaccharides, and polysaccharides, or derivatives thereof, may be used alone or in combination. The nucleating agent is preferably substantially soluble in the oral cavity. The content of the nucleating agent is preferably 50% by mass or more of the total mass of the powder-containing material 34.

[0068] The binder for the powder inclusion 34 may be a water-soluble polymer, such as dextrin, gelatin, gum arabic, polyvinyl alcohol, or carboxymethyl cellulose. The amount of binder added is preferably 10% by mass or less relative to the nucleating agent.

[0069] The flavor component of the powder inclusion 34 is not particularly limited and may include, for example, powdered flavors, oil-based flavors, etc. Typical powdered flavors include powdered chamomile, fenugreek, menthol, peppermint, cinnamon, herbs, etc. Typical oil-based flavors include lavender, cinnamon, cardamom, celery, clove, cascarilla, nutmeg, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon, orange, peppermint, cinnamon bark, caraway, cognac, jasmine, chamomile, menthol, cassia, ylang-ylang, sage, spearmint, fennel, pimento, ginger, anise, coriander, coffee, tobacco, etc. The flavor components may be used alone or in combination. When using a powdered flavor, the particle size is preferably 500 μm or less. It is preferable that the flavor component be substantially soluble in a liquid or in the oral cavity. The amount of the flavoring ingredient added is preferably 10% by mass or less relative to the core material.

[0070] Examples of flavor components in the powder inclusions 34 include citric acid, tartaric acid, sodium glutamate, neotame, thaumatin, stevia, sorbitol, xylitol, erythritol, aspartame, rutin, hesperidin, oxalic acid, tannic acid, catechin, naringin, quinine, quinic acid, limonin, caffeine, capsaicin, vitamins, amino acids, polyphenols, alginic acid, flavonoids, and lecithin. The flavor components are preferably substantially soluble in liquid or in the oral cavity. The amount of flavor component added is preferably 10% by mass or less of the nucleating agent.

[0071] The size of the powder-inclusion material 34 is larger than the opening width of the supply path formed by the supply path member 37. For example, when the powder-inclusion material 34 is spherical, its outer diameter is not particularly limited, but is preferably 1 mm or more and 8 mm or less. The upper limit of the outer diameter of the powder-inclusion material 34 is set to 8 mm, but it need only be smaller than the inner diameter of the cavity 33 and larger than the opening width of the supply path formed by the supply path member 37. When one powder-inclusion material 34 is placed in the cavity 33, the outer diameter of the powder-inclusion material 34 is preferably 3 mm or more and smaller than the inner diameter of the cavity 33. When the powder-inclusion material 34 is spherical, the outer diameter of the powder-inclusion material 34 is more preferably 3 mm or more and 1.0 mm or more smaller than the inner diameter of the cavity 33. By ensuring a difference between the outer diameter of the powder-inclusion material 34 and the inner diameter of the cavity 33, the powder-inclusion material 34 can be prevented from being broken and the flavor can be inhaled without significant resistance even when the flavor inhalation article 1 is used.

[0072] Although the number of powder-inclusions 34 arranged in the cavity 33 is one in the example shown in FIG. 1 , this is not limited to one and may be more than one. FIG. 6 is a diagram showing another example of a longitudinal cross section of the flavor inhalation article 1 according to the first embodiment. For example, as shown in FIG. 6 , at least two powder-inclusions 34 may be arranged in the cavity 33. In other words, multiple powder-inclusions 34 may be arranged in the cavity 33. When at least two powder-inclusions 34 are arranged in the cavity 33, the outer diameter of the powder-inclusion 34 is preferably 1 mm or more and smaller than the inner diameter of the cavity 33. Assuming that the powder-inclusion 34 is spherical with a cross-section having the same area as the cross-sections of the multiple powder-inclusions 34, it is more preferable that the outer diameter be 3 mm or more and smaller than the inner diameter of the cavity 33 by 1.0 mm or more. Even when a plurality of powder-containing substances 34 are placed in the cavity 33, a space is secured in the cavity 33, so that the powder-containing substances 34 are not destroyed and the flavor can be inhaled without much resistance even when the flavor inhalation article 1 is used.

[0073] The raw material powder constituting the powder inclusion 34 preferably accounts for 50 mass % or more of the total mass of the powder inclusion 34. Furthermore, at least a portion of the raw material powder of the powder inclusion 34 has a particle diameter that allows it to pass through the supply path member 37, and preferably has a particle diameter of 10 μm or more and 600 μm or less. In other words, it is preferable that the raw material powder having a particle diameter of 10 μm or more and 600 μm or less accounts for 50 mass % or more of the total mass of the powder inclusion 34.

[0074] Next, the supply path member 37 will be described as an example of a supply path member. The supply path member 37 is disposed within the second filter 32 and is a member that allows the powder obtained by applying an external force to the powder-containing material 34 to pass through more easily than the second filter 32. In other words, the powder obtained by applying an external force to the powder-containing material 34 passes more easily through the inside of the supply path member 37 disposed within the second filter 32 than through the gap 32b shown in FIG. 5A . For example, the supply path member 37 is a hollow member with a hollow cross section and open at both ends in the centerline direction. The presence of the supply path member 37 ensures a supply path within the second filter 32 for supplying the powder obtained by applying an external force to the powder-containing material 34. Furthermore, by ensuring a supply path with the supply path member 37, the powder obtained by applying an external force to the powder-containing material 34 can be delivered to the user's oral cavity together with the aerosol. Furthermore, by delivering the powder obtained by applying an external force to the powder-containing material 34 to the user's oral cavity, a new flavor and taste can be imparted.

[0075] The size of the supply path member 37 in the center line direction can be changed as appropriate to suit the size of the product, but is preferably the same as the size of the second filter 32 in the center line direction. In other words, the length of the supply path member 37 along the longitudinal direction of the filter portion 30 is preferably the same as the length of the second filter 32 along the longitudinal direction of the filter portion 30. By providing a supply path that penetrates the second filter 32 with the supply path member 37, it is possible to improve the powder delivery efficiency compared to when the size of the supply path member 37 in the center line direction is shorter than the size of the second filter 32 in the center line direction.

[0076] Furthermore, the ratio of the area of ​​the supply channel member 37 to the area of ​​the filter portion 30 in a cross section is not particularly limited, but may be 15% to 50%, and preferably 20% to 40%. When multiple supply channel members 37 are arranged within the second filter 32, the ratio of the total area of ​​the multiple supply channel members 37 to the area of ​​the filter portion 30 in one cross section is preferably within the above range. When the outer periphery of the supply channel member 37 is substantially circular in a cross section, its circumference can be adjusted appropriately depending on the size of the product, but is typically 6 mm to 15 mm, and more preferably 9 mm to 11 mm. Furthermore, the ratio of the circumference of the supply channel member 37 to the circumference of the second filter 32 is typically 0.20 to less than 0.70, and more preferably 0.35 to 0.50. When the cross section is not circular, the circumference is assumed to be a circle having the same area as the cross section, and the circumference of that circle is used.

[0077] Furthermore, the shape of the cross section of the supply path member 37 can be appropriately changed to match the shape of the product. For example, the cross section of the supply path member 37 shown in FIG. 5(A) has a circular opening. Alternatively, for example, the cross section of the supply path member 37 may have a single windmill-shaped opening as a whole, as shown in FIG. 5(B). Other shapes, such as an ellipse, a polygon, or a rounded polygon, may also be formed. In the cross section of the supply path member 37, the opening width of the supply path formed by the supply path member 37 can be, for example, larger than the powder obtained by applying an external force to the powder inclusion 34 but smaller than the powder inclusion 34. For example, the opening width of the supply path formed by the supply path member 37 can be, for example, 0.5 mm or more and 4.8 mm or less. By making the opening width of the supply path formed by the supply path member 37 smaller than the powder inclusion 34, it is possible to prevent the powder inclusion 34 from moving downstream of the cavity 33.

[0078] Here, a specific example of the configuration of the supply path member 37 will be described. For example, the supply path member 37 is a tube formed by winding a sheet member containing the same material as the sheet member constituting the second filter 32 so that the cross section of the tube is hollow, such as a cylinder. Specifically, the supply path member 37 is a cardboard tube formed by winding paper. By using a cardboard tube for the supply path member 37, the material constituting the supply path member 37 can be substantially the same as that of the second filter 32.

[0079] The supply path member 37 is a paper tube formed by bonding together a plurality of sheet members, including at least paper, and spirally winding them, a so-called spiral paper tube. The spiral paper tube manufacturing method makes it possible to easily form a paper tube with a circular cross section. By employing a spiral paper tube for the supply path member 37, the strength of the supply path member 37 can be improved while reducing the ratio of the area of ​​the supply path member 37 to the area of ​​the filter section 30 in the cross section. Furthermore, by combining and bonding together sheet members containing fragrance components, flavor components, tobacco powder, etc. with paper, a new flavor and taste can be imparted to the aerosol.

[0080] Alternatively, the supply path member 37 may be a cardboard tube formed by winding paper multiple times into a cylindrical shape, a so-called straight cardboard tube. The manufacturing method for a straight cardboard tube allows for a smaller amount of glue to be used to attach the paper compared to the manufacturing method for a spiral cardboard tube. The supply path member 37 may also be a cardboard tube formed by stacking multiple sheet members, including at least paper. By stacking multiple sheet members, the strength of the supply path member 37 can be maintained even when the basis weight of each sheet member is small. The supply path member 37 is not limited to a cardboard tube formed by winding paper, but may also be formed from a tube made of synthetic resin or the like that already has a hollow cross section. When the supply path member 37 is a tube, the wall thickness of the tube is not particularly limited, but is typically 50 μm to 500 μm, and preferably 100 μm to 250 μm. For example, when sheet members are stacked, the total thickness of the stacked sheet members may be within the above range. By setting the wall thickness of the tube within the above range, deformation of the supply passage member 37 due to external pressure from the second filter 32 or the like can be suppressed.

[0081] The supply path member 37 is not limited to the above example, and may form a curved, spiral, or other shape. Furthermore, the supply path formed by the supply path member 37 may branch or merge along the way. Furthermore, the supply path formed by the supply path member 37 may have a varying opening width along the way. Furthermore, the supply path members 37 may be disposed in multiple regions within the second filter 32, forming multiple supply paths formed by the supply path member 37. Furthermore, the second filter 32 may further include a non-penetrating supply path in addition to the supply path formed by the penetrating supply path member 37. By providing a non-penetrating supply path, the flow rate of the supply path formed by the penetrating supply path member 37 can be suppressed. As a result, the amount of powder supplied can be suppressed.

[0082] Next, the restricting member 36 will be described as an example of a restricting member. The restricting member 36 is a member disposed in the first filter 31 and is less permeable to aerosols than the first filter 31, or is a member that does not allow aerosols passing through the first filter 31. In other words, the restricting member 36 disposed in the first filter 31 is less permeable to aerosols than the gap 31b shown in FIG. 3B , or does not allow aerosols to pass through at all. By restricting the aerosol flow path within the first filter 31 using the restricting member 36, the airflow resistance during inhalation can be adjusted. Specifically, even if the first filter 31 is a paper filter with a reduced density to achieve a filtration rate equivalent to that of a fiber filter made using cellulose acetate or the like, it can achieve an airflow resistance equivalent to that of a fiber filter. In other words, by disposing the restricting member 36 within the first filter 31, it is possible to achieve both an airflow resistance equivalent to that of a fiber filter and an aerosol filtration rate equivalent to that of a fiber filter. Furthermore, by restricting the aerosol flow path within the first filter 31 using the restricting member 36, the user can enjoy a moderate inhalation sensation. Specifically, even with the first filter 31 being a paper filter, the restriction member 36 can adjust the resistance felt in the throat when the user inhales, the aerosol concentration, and other factors, thereby providing the user with an appropriate inhalation response. Furthermore, by restricting the aerosol flow path within the first filter 31 with the restriction member 36, an external force can be applied to the powder-containing material 34, causing the resulting powder to be stirred up by the aerosol and delivered to the user's oral cavity along with the aerosol. Furthermore, the aerosol, whose flow path is restricted by the restriction member 36, efficiently stirs up the powder, thereby increasing the amount of powder delivered during inhalation.

[0083] The restricting member 36 is a member that is less permeable to powder obtained by applying an external force to the powder-inclusion material 34 than the first filter 31, or is a member that does not allow powder to pass through. In other words, the restricting member 36 disposed in the first filter 31 is less permeable to powder than the gap 31b shown in FIG. 3B , or does not allow powder to pass through at all. The presence of the restricting member 36 can prevent the powder-inclusion material 34 and the powder obtained by applying an external force to the powder-inclusion material 34 from moving toward the first side (upstream side) in the center line direction. Specifically, the presence of the restricting member 36 can prevent the powder-inclusion material 34 and the powder obtained by applying an external force to the powder-inclusion material 34 from passing through the first filter 31 and moving toward the cooling unit 20 or the substrate unit 10.

[0084] The restricting member 36 disposed within the first filter 31 may restrict the aerosol flow path through the first filter 31 and may also modify the aerosol. "Modifying" refers to modifying or removing some components contained in the generated aerosol, or adding new components that affect the aroma and taste of the aerosol inhaled by the user. The number of restricting members 36 may be one or more. Specifically, as shown in FIG. 3(B), one restricting member 36 may be disposed within the first filter 31, or as shown in FIG. 4(B), multiple restricting members 36 may be disposed within the first filter 31. The restricting member 36 may be disposed not only in a region toward the center of the cross section of the first filter 31, but also in a region toward the edge of the cross section of the first filter 31. Each of the multiple restricting members 36 may be disposed in a different region of the cross section of the first filter 31.

[0085] For example, the limiting member 36 may be selected from a hollow member with both ends closed in the centerline direction, a solid member, a capsule containing powder or liquid, a thread, a string, or a rope. Compared to a configuration without a limiting member with both ends closed in the centerline direction, this configuration can provide the user with a moderate smoking experience while imparting a new flavor and taste. A "hollow member with both ends closed in the centerline direction" is a member with a hollow cross section having a space surrounded by an inner surface. By using a hollow member as the limiting member 36, the flavor inhalation article 1 can be made lighter than when a solid member is used. Furthermore, when the limiting member 36 is a hollow member, the thickness of the side surface of this hollow member is not particularly limited, but is typically 50 μm to 500 μm, and preferably 100 μm to 250 μm. For example, when the hollow member is formed by wrapping sheet members, the total thickness of the overlapping sheet members may be within the above range. By setting the side thickness of the hollow member within the above range, deformation of the restricting member 36 due to external pressure from the first filter 31 or the like can be suppressed. A "solid member" is a member formed into a fixed shape using the same or similar material and having a solid cross section. By making the restricting member 36 a solid member, the content of the material used in the restricting member 36 in the flavor inhalation article 1 can be increased compared to that of a hollow member, thereby improving the effects attributable to this material. Furthermore, a "capsule containing powder or liquid inside" is a destructible capsule that releases its powder or liquid contents upon application of external force. By making the restricting member 36 a capsule, the user can control whether or not to restrict the aerosol flow path of the first filter 31. Furthermore, by making the restricting member 36 out of thread, the difficulty of aerosol passage within the restricting member 36 can be adjusted depending on the gaps between threads or fibers and the number of threads. Furthermore, by making the restricting member 36 out of string, the number of strings thicker than thread can be reduced, making manufacturing easier. Furthermore, by making the restricting member 36 out of rope, manufacturing is also easier.

[0086] The outer peripheral shape of the limiting member 36 in cross section can be changed as needed to suit the shape of the product, and may be, for example, a circle, an ellipse, a polygon, or a rounded polygon. The ratio of the area of ​​the limiting member 36 to the area of ​​the filter portion 30 in cross section is not particularly limited, but may be 15% to 50%, and preferably 20% to 40%. When multiple limiting members 36 are disposed within the first filter 31, it is preferable that the ratio of the total area of ​​the multiple limiting members 36 to the area of ​​the filter portion 30 in one cross section be within the above range.

[0087] When the outer periphery of the restricting member 36 is substantially circular in cross section, its circumference can be adjusted to suit the size of the product, but is typically 6 mm to 15 mm, and more preferably 9 mm to 11 mm. The ratio of the circumference of the restricting member 36 to the circumference of the first filter 31 is typically 0.20 to less than 0.70, and more preferably 0.35 to 0.50. If the cross section is not circular, the circumference is assumed to be a circle having the same area as the cross section, and the circumference of that circle is used.

[0088] The size of the limiting member 36 in the centerline direction can be adjusted appropriately to suit the size of the product, but is preferably not larger than the size of the first filter 31 in the centerline direction. For example, the length of the limiting member 36 along the longitudinal direction of the filter portion 30 is preferably shorter than the length of the first filter 31 along the longitudinal direction of the filter portion 30. Furthermore, when the size of the limiting member 36 in the centerline direction is smaller than the size of the first filter 31 in the centerline direction, the difference between the size of the limiting member 36 in the centerline direction and the size of the first filter 31 in the centerline direction is preferably 2 mm or more. By making the size of the limiting member 36 smaller than the size of the first filter 31 in the centerline direction, the limiting member 36 does not protrude from at least one end face of the first filter 31, and the appearance can be similar to the end face of the first filter 31 used in a flavor inhalation article that does not have a limiting member 36. By making the limiting member 36 2 mm or more smaller than the first filter 31 in the centerline direction, the limiting member 36 can be made invisible from at least one end of the first filter 31.

[0089] 1, the shape of the restricting member 36 is cylindrical or columnar. Specifically, the size of the restricting member 36 in a direction perpendicular to the center line direction is smaller than the size of the restricting member 36 in the center line direction. Furthermore, the shape of the restricting member 36 is not limited to the example shown in FIG. 1, and the restricting member 36 may be spherical, in which the size of the restricting member 36 in the direction perpendicular to the center line direction is the same as the size of the restricting member 36 in the center line direction.

[0090] Here, a specific example of the configuration of the limiting member 36 will be described. For example, the limiting member 36 is formed into a cylindrical or columnar shape by winding a sheet member containing the same material as the sheet member 31a constituting the first filter 31, and both ends in the centerline direction are closed by the sheet member. This allows the material constituting the limiting member 36 to be substantially the same as that of the first filter 31. Specifically, the limiting member 36 is a member having both ends in the centerline direction of a so-called spiral cardboard tube formed by bonding multiple sheet members including at least paper together and spirally winding them. The limiting member 36 may also be a member having both ends in the centerline direction of a so-called straight cardboard tube formed by winding paper multiple times into a cylindrical shape. Alternatively, the limiting member 36 may be a member having both ends in the centerline direction of a cardboard tube formed by stacking multiple sheet members including at least paper and closed.

[0091] In the above example, the restricting member 36 is formed by wrapping paper around it, but this configuration is not limited thereto as long as it is less likely to allow the passage of aerosols, powder-containing material 34, or powder obtained by applying an external force to the powder-containing material 34 than the first filter 31. The restricting member 36 may be formed by wrapping a sheet of, for example, a woven or nonwoven fabric of various fibers around it, or may be formed by filling it with a woven or nonwoven fabric, paper, resin, fiber, inorganic adsorbent, porous polymer, rubber, metal, gelling agent, or the like. Examples of materials for the restricting member 36 include those primarily composed of pulp, cotton, wool, polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polylactic acid, aluminum, cellulose acetate, activated carbon, sepiolite, palygorskite, zeolite, activated alumina, sepiolite, silica gel, activated clay, vermiculite, diatomaceous earth, ion exchange resin, latex, silicon, aluminum, and known natural gelling agents, or any combination thereof.

[0092] The shape of the end of the limiting member 36 in the center line direction is flat in the example shown in Fig. 1, but is not limited to this and may not be flat. Fig. 7 is a diagram showing another example of a longitudinal section of the flavor inhalation article 1 according to the first embodiment, where (A) is a diagram showing a longitudinal section of the flavor inhalation article 1 in which a limiting member 36 having a sharp first side is arranged, and (B) is a diagram showing a longitudinal section of the flavor inhalation article 1 in which a limiting member 36 whose width decreases from the second side to the first side is arranged. For example, as shown in Fig. 7(A), the shape of the end of the limiting member 36 in the center line direction may be such that the end surface on the second side of the limiting member 36 is flat and the end surface on the first side of the limiting member 36 is sharp. Furthermore, for example, as shown in Fig. 7(B), the width of the limiting member 36 may be relatively smaller in the first side region than in the second side region.

[0093] 1 and 8, a specific example of the arrangement of the limiting member 36 will be described. Fig. 8 is a diagram showing another example of the longitudinal cross section of the flavor inhalation article 1 according to the first embodiment, in which (A) shows a state in which a limiting member 36 having the same size in the center line direction as the first filter 31 is positioned within the first filter 31, and (B) shows a state in which a plurality of limiting members 36 are positioned within the first filter 31. The limiting members 36 are preferably arranged so as not to protrude from the second-side end face of the first filter 31.

[0094] 1 , the restricting member 36, which is smaller than the size of the first filter 31 in the centerline direction, is located on the second side (downstream side) within the first filter 31. Specifically, the restricting member 36 is located in the second-side region within the first filter 31. By locating the restricting member 36 in the second-side (downstream) region within the first filter 31, it is possible to achieve suitable filtration of the aerosol while preventing the powder-containing material 34 and powder obtained by applying an external force to the powder-containing material 34 from entering the voids 31b of the first filter 31. Furthermore, it is preferable that the second-side end face of the restricting member 36 is located at the second-side end face of the first filter 31.

[0095] The restricting member 36 is not limited to the above-described configuration, as long as it is positioned so as not to protrude from the second end surface of the first filter 31. As shown in FIG. 8(A), a restricting member 36 having the same size in the centerline direction as the first filter 31 may be positioned within the first filter 31. Furthermore, when multiple restricting members 36 are positioned, the positioning of the restricting members 36 is not limited to the same region in the centerline direction as shown in FIG. 4(B). As shown in FIG. 8(B), the restricting members 36 may be positioned in multiple regions within the first filter 31. Increasing the ratio of the restricting members 36 to the first filter 31 can increase the strength of the mouthpiece segment 50 while restricting the aerosol flow path through the filter portion 30.

[0096] As described above, the flavor inhalation article 1 includes a substrate 10 including at least an aerosol source 11, a cooling section 20 that generates an aerosol by cooling vapor generated by heating the substrate 10, a filter section 30 through which the aerosol passes, and tipping paper 40 wrapped around the outer surfaces of the substrate 10, the cooling section 20, and the filter section 30. The filter section 30 includes a first filter 31 disposed on the cooling section 20 side, a second filter 32 disposed on the opposite side of the first filter 31 from the cooling section 20, and a powder-containing material 34 disposed in a cavity 33 formed between the first filter 31 and the second filter 32. The powder-containing material 34 is a mass of raw material powder containing at least one of a flavor component and a flavor component, and is turned into powder by the application of an external force. Furthermore, a restricting member 36 that restricts the flow path of the aerosol is disposed in the first filter, and a supply path member 37 that supplies the powder from the cavity 33 to the downstream end of the second filter 32 is disposed in the second filter. The flavor inhalation article 1 may not have the cooling section 20 from the viewpoint of compactness in the size in the center line direction.

[0097] In the flavor inhalation article 1, after the temperature of the base material 10 heated by the heating unit 121 reaches a predetermined temperature, the user inhales the base material 10 to generate an aerosol. The user also applies force to the filter unit 30 to turn the powder-containing material 34 into powder. When the user inhales, the powder is delivered into the oral cavity along with the aerosol product. This allows a new flavor and taste to be imparted.

[0098] Furthermore, the restricting member 36 is a member that is less permeable than the first filter 31 to aerosols and powder obtained by applying an external force to the powder-containing material 34, or that does not allow them to pass through. The supply path member 37 is a member that allows powder obtained by applying an external force to the powder-containing material 34 to pass through more easily than the second filter 32. By restricting the aerosol flow path within the first filter 31 with the restricting member 36, even the first filter 31, which is a paper filter, can achieve both airflow resistance and aerosol filtration rate equivalent to that of a fiber filter, providing the user with an appropriate inhalation response. Furthermore, the presence of the restricting member 36 and the supply path member 37 improves the delivery efficiency of powder obtained by applying an external force to the powder-containing material 34.

[0099] It should be noted that the present invention is not limited to the above-described example, and the filter unit 30 may have another filter that is separate and independent from the first filter 31, on the first side (substrate unit 10 side) of the first filter 31. The presence of another filter in addition to the first filter 31 can diversify the airflow resistance of the filter unit 30. Furthermore, the present invention is not limited to a dual structure, and two or more types of filters may be provided in addition to the first filter 31, which is a paper filter.

[0100] <Second embodiment> Fig. 9 is a diagram showing a longitudinal section of 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 terms of the manner of use. Furthermore, the flavor inhalation article 2 according to the second embodiment differs from the flavor inhalation article 1 according to the first embodiment in terms of a mouthpiece segment 250 corresponding to the mouthpiece segment 50 and a communication hole 260 corresponding to the through-hole 60. Below, differences from the first embodiment will be described. The same reference numerals are used for the same components in the first and second embodiments, and detailed descriptions thereof will be omitted.

[0101] The flavor inhalation article 2 is a combustion-type flavor inhalation article. It is used by burning the first end, which is opposite to the second end, which is the end held by the user for inhalation. The aerosol source 11 included in the substrate 10 generates vapor from which the aerosol is generated by heating during combustion. The cross section of the flavor inhalation article 2 is substantially circular, and its circumference can be varied as appropriate depending on the size of the product, but is typically 16 mm to 27 mm, and preferably 22 mm to 25 mm. If the cross section is not circular, the circumference is assumed to be a circle having the same area as the cross section, and the circumference of that circle is used. The size of the flavor inhalation article 2 in the center line direction can be varied as appropriate depending on the size of the product, but is typically 60 mm to 120 mm, and preferably 80 mm to 100 mm.

[0102] The mouthpiece segment 250 is composed of a filter unit 30. The size of the mouthpiece segment 250 in the centerline direction can be adjusted appropriately to suit the size of the product, but is typically 20 mm to 40 mm, and preferably 25 mm to 30 mm. The mouthpiece segment 250 also has a plurality of concentric communication holes 260 formed around its circumference. The communication holes 260 allow air flowing in from the air vents formed in the tipping paper 40 to communicate with the filter unit 30. By adjusting the amount of air flowing in from the communication holes 260, the concentration of the aerosol inhaled by the user can be adjusted.

[0103] Furthermore, when the filter part 30 of the mouthpiece segment 250 is configured such that the first filter 31 and the second filter 32 are wound with a wrapper paper 35 and a tipping paper 40, it is preferable that at least the wrapper paper 35 has a communication hole 260 at a position corresponding to the air hole provided in the tipping paper 40. When producing a flavor inhalation article 2 having such a mouthpiece segment 250, the tipping paper 40 may be wound so that the communication hole 260 and the air hole provided in the tipping paper 40 overlap, but from the viewpoint of ease of production, it is preferable to produce a flavor inhalation article 2 that does not have a communication hole 260, and then drill a hole that passes through both the mouthpiece segment 250 and the tipping paper 40 at the same time.

[0104] Specific examples of the arrangement of the limiting member 36 and the communication holes 260 will now be described with reference to Figures 9, 10, and 11. Figure 10 shows another example of a longitudinal cross section of the flavor inhalation article 2 according to the second embodiment, in which (A) shows a state in which a limiting member 36 having the same size in the center line direction as the first filter 31 is positioned within the first filter 31 and a communication hole 260 is provided in the area where the first filter 31 is positioned, and (B) shows a state in which a limiting member 36 having the same size in the center line direction as the first filter 31 is positioned within the first filter 31 and a communication hole 260 is provided in the area where the second filter 32 is positioned. Figure 11 shows another example of a longitudinal cross section of the flavor inhalation article 2 according to the second embodiment, in which a plurality of limiting members 36 are positioned within the first filter 31. The limiting members 36 are preferably positioned so as not to protrude from the second end face of the first filter 31.

[0105] In the example shown in FIG. 9 , a restricting member 36 smaller than the size of the first filter 31 in the centerline direction is located on the second side (upstream side) within the first filter 31, and a communication hole 260 is provided in a region of the first filter 31 where the restricting member 36 is not located. Specifically, the communication hole 260 is provided in a region upstream of the restricting member 36. The communication hole 260 connects air flowing in from an air vent provided in the tipping paper 40 to the void 31b (see FIG. 3A ) within the first filter 31. If the communication hole 260 is present in the region of the mouthpiece segment 250 where the first filter 31 is located, the communication hole 260 is preferably provided in a region where the density of the first filter 31 is relatively low, from the perspective of improving the efficiency of air inflow. In other words, the communication hole 260 is preferably provided in a region where the restricting member 36 is not located.

[0106] As shown in FIG. 10(A), a restricting member 36 having the same size in the centerline direction as the first filter 31 may be disposed within the first filter 31, and a communication hole 260 may be provided in the region of the mouthpiece segment 250 where the first filter 31 is disposed. Increasing the ratio of the restricting member 36 to the first filter 31 can increase the strength of the mouthpiece segment 250 while restricting the flow path of the aerosol through the filter portion 30. Furthermore, air can be allowed to flow into the region of high density of the first filter 31 (see FIG. 3(B)). Alternatively, as shown in FIG. 10(B), a restricting member 36 having the same size in the centerline direction as the first filter 31 may be disposed within the first filter 31, and a communication hole 260 may be provided in the region of the mouthpiece segment 250 where the second filter 32 is disposed. Furthermore, when the communication hole 260 is provided in the region where the second filter 32 is disposed, the position of the communication hole 260 in the centerline direction is preferably a position that is unlikely to be held in the user's mouth during inhalation. For example, the position of the communication hole 260 in the center line direction is preferably 8 mm or more away from the second end face of the second filter 32. The communication hole 260 may be provided in the region of the mouthpiece segment 250 where the first filter 31 is disposed and in the region of the mouthpiece segment 250 where the second filter 32 is disposed. Alternatively, as shown in Fig. 11, the restricting member 36 may be disposed in multiple regions within the first filter 31, and the communication hole 260 may be provided in a region of the first filter 31 where the restricting member 36 is not disposed. The communication hole 260 may be provided in any region, upstream, toward the center, or downstream, as long as the region does not have the restricting member 36 disposed therein.

[0107] As described above, the flavor inhalation article 2 according to the second embodiment includes a substrate 10 including at least an aerosol source 11, a filter 30 through which the aerosol passes, and tipping paper 40 wrapped around the outer peripheral surfaces of the substrate 10 and the filter 30. The filter 30 includes a first filter 31 disposed on the substrate 10 side, a second filter 32 disposed on the opposite side of the substrate 10 from the first filter 31, and a powder-containing substance 34 disposed in a cavity 33 formed between the first filter 31 and the second filter 32. The powder-containing substance 34 is a mass of raw material powder containing at least one of a flavor component and a flavor component, and is turned into powder upon application of an external force. Furthermore, the first filter is provided with a restricting member 36 for restricting the flow path of the aerosol, and the second filter 32 is provided with a supply path member 37 for supplying the powder from the cavity 33 to the downstream end. The flavor inhalation article 2, like the flavor inhalation article 1 according to the first embodiment, can impart a new flavor flavor when a paper filter is used in a combustion-type flavor inhalation article.

[0108] <Summary> The present disclosure includes the following configurations: (1) A flavor inhalation article comprising: a substrate portion including an aerosol source; and a filter portion through which aerosol generated from the substrate portion passes, wherein the filter portion has: a first paper filter arranged on the substrate portion side; a second paper filter arranged on the opposite side of the first paper filter from the substrate portion; and a powder-containing substance arranged in a cavity formed between the first paper filter and the second paper filter, the powder-containing substance being a mass of raw material powder including at least one of a taste component and a flavor component and being turned into powder by the application of an external force, wherein a restricting member is arranged inside the first paper filter to restrict the flow path of the aerosol, and a supply path member is arranged in the second paper filter to form a flow path for supplying the powder from the cavity to a downstream end. (2) The flavor inhalation article described in (1), wherein the restricting member is selected from a hollow member or a solid member closed at both longitudinal ends of the filter portion, a capsule containing powder or liquid therein, a thread, a string, or a rope. (3) The flavor inhalation article according to (1) or (2), wherein the length of the filter portion of the restricting member along the longitudinal direction is shorter than the length of the first paper filter along the longitudinal direction. (4) The flavor inhalation article according to (3), wherein the difference between the length of the restricting member along the longitudinal direction and the length of the first paper filter along the longitudinal direction is 2 mm or more. (5) The flavor inhalation article according to (3), wherein the restricting member is located on the downstream end side within the first paper filter. (6) The flavor inhalation article according to (1) or (2), wherein the length of the filter portion of the restricting member along the longitudinal direction is the same as the length of the first paper filter along the longitudinal direction. (7) The flavor inhalation article according to any of (1) to (6), wherein the ratio between the circumference of the restricting member and the circumference of the first paper filter is 0.2 or more and less than 0.7. (8) The flavor inhalation article according to any one of (1) to (7), wherein the supply path member is a hollow member having openings at both ends in the longitudinal direction of the filter portion. (9) The flavor inhalation article according to (8), wherein the supply path member includes at least paper. (10) The flavor inhalation article according to (9), wherein the supply path member is a straight paper tube formed by rolling paper into a cylindrical shape or a spiral paper tube formed by rolling a strip of paper obliquely.(11) The flavor inhalation article according to any one of (1) to (10), wherein the length of the filter portion of the supply path member along the longitudinal direction is the same as the length of the second paper filter along the longitudinal direction. (12) The flavor inhalation article according to any one of (1) to (11), wherein the ratio of the circumference of the supply path member to the circumference of the second paper filter is 0.2 or more and less than 0.7. (13) The flavor inhalation article according to any one of (1) to (12), wherein the size of the powder-containing substance is 1 mm or more and 8 mm or less. (14) The flavor inhalation article according to any one of (1) to (13), wherein, when one powder-containing substance is placed in the cavity, the size of the powder-containing substance is 3 mm or more and smaller than the inner diameter of the cavity. (15) The flavor inhalation article according to any one of (1) to (13), wherein, when at least two of the powder-containing substances are placed in the cavity, the size of the powder-containing substances is 1 mm or more and smaller than the inner diameter of the cavity. (16) The flavor inhalation article according to any one of (1) to (15), wherein the breaking strength at which the powder-containing substances break down into powder is 5 N or more and 60 N or less. (17) The flavor inhalation article according to any one of (1) to (16), wherein the raw material powder having a particle diameter of 10 μm or more and 600 μm or less accounts for 50 mass % or more of the total mass of the powder-containing substance. (18) The flavor inhalation article according to any one of (1) to (17), wherein the filter portion has a tubular member formed into a tubular shape between the base material portion and the first paper filter, and the circumference of the tubular member is approximately the same as the circumference of the first paper filter. (19) The flavor inhalation article according to (18), comprising tipping paper wound around the outer peripheral surfaces of the base material portion and the filter portion, the tipping paper being formed at a position corresponding to the tubular member, the first paper filter, or the second paper filter and having a vent hole for allowing air to flow from the outside to the inside. (20) The flavor inhalation article according to any one of (1) to (19), wherein the first paper filter and the second paper filter are filters filled with a sheet member. (21) The flavor inhalation article according to (20), wherein the first paper filter and the second paper filter are filters filled with the sheet member so that voids are formed along the longitudinal direction of the filter portion.(22) The flavor inhalation article according to (20) or (21), wherein the first paper filter and the second paper filter are filters in which the sheet members are gathered. (23) The flavor inhalation article according to any one of (20) to (22), wherein the first paper filter and the second paper filter are filters in which the sheet members are crimped.

[0109] DESCRIPTION OF SYMBOLS 1, 2...flavor inhalation article, 10...substrate portion, 11...aerosol source, 20...cooling portion, 30...filter portion, 31...first filter, 32...second filter, 33...cavity, 34...powder-containing substance, 35...roller paper, 36...restriction member, 37...supply path member, 40...tipping paper, 50...mouthpiece segment, 60...through hole, 260...communicating hole

Claims

1. A flavor inhalation article comprising: a base portion including an aerosol source; and a filter portion through which the aerosol generated from the base portion passes, wherein the filter portion has a first paper filter arranged on the base portion side, a second paper filter arranged on the opposite side of the first paper filter from the base portion, and a powder-containing substance which is a mass of raw material powder containing at least one of a taste component and a fragrance component and which becomes a powder when an external force is applied, and which is arranged in a cavity formed between the first paper filter and the second paper filter, wherein a restricting member which restricts the flow path of the aerosol is arranged inside the first paper filter, and a supply path member which forms a flow path for supplying the powder from the cavity to a downstream end is arranged in the second paper filter.

2. The flavor inhalation article according to claim 1, wherein the restricting member is selected from a hollow member with both ends in the longitudinal direction of the filter portion closed, a solid member, a capsule containing a powder or liquid therein, a thread, a string, or a rope.

3. The flavor inhalation article according to claim 1 or 2, wherein the length of the restricting member along the longitudinal direction of the filter portion is shorter than the length of the first paper filter along the longitudinal direction.

4. The flavor inhalation article according to claim 3, wherein a difference between a length of the restricting member along the longitudinal direction and a length of the first paper filter along the longitudinal direction is 2 mm or more.

5. The flavor inhalation article according to claim 3, wherein the restricting member is located on the downstream end side within the first paper filter.

6. The flavor inhalation article according to claim 1 or 2, wherein the length of the restricting member along the longitudinal direction of the filter portion is the same as the length of the first paper filter along the longitudinal direction.

7. The flavor inhalation article according to any one of claims 1 to 6, wherein a ratio of a circumference of the restricting member to a circumference of the first paper filter is equal to or greater than 0.2 and less than 0.

7.

8. The flavor inhalation article according to any one of claims 1 to 7, wherein the supply path member is a hollow member having openings at both longitudinal ends of the filter portion.

9. The flavor inhalation article according to claim 8, wherein the supply path member includes at least paper.

10. The flavor inhalation article according to claim 9, wherein the supply path member is a straight paper tube made of paper rolled into a cylindrical shape, or a spiral paper tube made of a strip of paper rolled obliquely.

11. A flavor inhalation article described in any one of claims 1 to 10, wherein the length of the filter portion of the supply path member along the longitudinal direction is the same as the length of the second paper filter along the longitudinal direction.

12. The flavor inhalation article according to any one of claims 1 to 11, wherein a ratio of a circumference of the supply path member to a circumference of the second paper filter is equal to or greater than 0.2 and less than 0.

7.

13. The flavor inhalation article according to any one of claims 1 to 12, wherein the size of the powder-containing material is 1 mm or more and 8 mm or less.

14. A flavor inhalation article according to any one of claims 1 to 13, wherein when one powder inclusion is placed in the cavity, the size of the powder inclusion is 3 mm or more and smaller than the inner diameter of the cavity.

15. A flavor inhalation article according to any one of claims 1 to 13, wherein when at least two of the powder inclusions are placed in the cavity, the size of the powder inclusions is 1 mm or more and smaller than the inner diameter of the cavity.

16. The flavor inhalation article according to any one of claims 1 to 15, wherein the powder-containing substance has a breaking strength of 5 N or more and 60 N or less when it turns into powder.

17. A flavor inhalation article as described in any one of claims 1 to 16, wherein the powder inclusion is such that the raw powder having a particle diameter of 10 μm or more and 600 μm or less accounts for 50 mass % or more of the total mass of the powder inclusion.

18. A flavor inhalation article as described in any one of claims 1 to 17, wherein the filter portion has a tubular member formed into a cylindrical shape between the base portion and the first paper filter, and the circumference of the tubular member is approximately the same as the circumference of the first paper filter.

19. The flavor inhalation article described in claim 18, comprising tipping paper wound around the outer peripheral surfaces of the base material portion and the filter portion, the tipping paper being formed at a position corresponding to the tubular member, the first paper filter or the second paper filter and having an air hole for allowing air to flow from the outside to the inside.

20. The flavor inhalation article according to any one of claims 1 to 19, wherein the first paper filter and the second paper filter are filters filled with a sheet member.

21. The flavor inhalation article according to claim 20, wherein the first paper filter and the second paper filter are filters in which the sheet member is filled so that voids are formed along the longitudinal direction of the filter portion.

22. The flavor inhalation article according to claim 20 or 21, wherein the first paper filter and the second paper filter are filters in which the sheet member is gathered.

23. The flavor inhalation article according to any one of claims 20 to 22, wherein the first paper filter and the second paper filter are filters in which the sheet members have been subjected to a crimping treatment.

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