Flavor inhalation article

Abstract

This flavor inhalation article 1 comprises: a flavor source 11; a filter positioned downstream of the flavor source 11; and a connection member 30 as an example of an exterior member provided so as to cover at least a portion of the outer peripheral surface of at least one of the flavor source 11 or the filter. A recessed part 32, which is recessed from the outer peripheral surface 31, is formed in the connection member 30, and a communication path 40 for providing communication between the outside and the inside is formed in at least one of a bottom part and a side part of the recess part 32.

Description

Flavor suction article

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

[0002] For example, a method for manufacturing a smoking article described in Patent Document 1 includes the steps of preparing a double-length tobacco rod having twice the length of a tobacco rod and separable at its longitudinal center, and a double-length tobacco segment including two cooling segments abutting both ends of the double-length tobacco rod. This method also includes the steps of separating the double-length tobacco segment at its longitudinal center to prepare a pair of separated tobacco segments, inverting the segments, and arranging them spaced apart so that their longitudinal axes are aligned and the cooling segments face each other. This method also includes the steps of preparing a double-length filter segment having twice the length of the filter segment and arranging it at the spaced apart position so that its both ends abut the cooling segment-side ends of the tobacco segment to prepare a composite segment. This method also includes the steps of wrapping and integrating the composite segment with a sheet of tipping paper to produce a double-length smoking article having twice the length of the smoking article, and cutting the double-length smoking article at its longitudinal center to produce a smoking article.

[0003] For example, the filter attachment device described in Patent Document 2 is configured as follows: A tipping paper web is unwound from a tipping paper roll. The web is guided to a supply drum (coking drum). An adhesive (glue) is applied to one side of the web before the supply drum. The supply drum has a suction surface on its outer periphery and rotates while holding the web on this suction surface. A bladed drum is disposed adjacent to the supply drum. The bladed drum has multiple coking knives on its outer periphery. These coking knives are spaced apart at regular intervals and rotate in synchronization with the supply drum as the bladed drum rotates. These rotating coking knives cut the web W into tipping paper on the suction surface of the supply drum. The tipping paper continues to rotate while being suction-held by the supply drum and is fed to an intermediate product on a first transport drum. A bonding path is formed between the supply drum and the first transport drum. The tipping paper adheres from its leading edge to the outer surface of the intermediate product and is transported along the first transport drum. With the tipping paper attached, the intermediate product is transferred from the first conveying drum to a second conveying drum (rolling drum). A transfer path is formed between the first conveying drum and the second conveying drum. The intermediate product is conveyed between the guide member as the second conveying drum rotates. The guide member extends along the direction of rotation of the second conveying drum. A rolling path for the intermediate product is formed between the outer periphery of the second conveying drum and the guide member, and the rolling path is curved along the outer periphery of the second conveying drum. By passing through this rolling path, tipping paper is wrapped around the intermediate product, and a double filter cigarette is produced.

[0004] WO2020 / 070871 Patent No. 5877570

[0005] A supply device for an exterior member (for example, a connecting member (tipping paper in Patent Document 1) that connects the substrate portion and the filter portion) that covers the periphery of at least either the flavor source or the filter unwinds the substrate that forms the basis of the exterior member wound around a bobbin in a direction perpendicular to the longitudinal direction of a composite segment composed of the substrate portion and the filter portion. Therefore, in order to accurately integrate the composite segment, it is important to accurately align the longitudinal position of the composite segment with the position in the direction perpendicular to the unwinding direction of the exterior member. An object of the present disclosure is to provide a flavor inhalation article that can suppress misalignment in the direction perpendicular to the unwinding direction of the exterior member.

[0006] The present disclosure, which has been completed with respect to this object, provides a flavor inhalation article comprising: a flavor source; a filter located downstream of the flavor source; and an exterior member provided so as to cover at least a portion of the outer circumferential surface of at least one of the flavor source or the filter, wherein the exterior member has a recess formed in the outer circumferential surface, and a communication passage connecting the outside and the inside of the exterior member is formed in at least one of the bottom and side of the recess. Here, the exterior member has a connecting member wound so as to cover at least a portion of the outer circumferential surface of a first winding member wound around the flavor source and at least a portion of the outer circumferential surface of a second winding member wound around the filter, and connecting the first winding member and the second winding member, and the recess may be formed in the connecting member. Furthermore, the recess and the communication passage may be formed in a portion of the connecting member corresponding to the filter. The exterior member may include a first winding member wound around the flavor source and a second winding member wound around the filter, and the recess may be formed in at least one of the first winding member and the second winding member. The recess and the communication path may be formed in the second winding member. The recess may be formed around the entire circumference. The recess may be formed at one location in the longitudinal direction of the filter. The communication path may be a plurality of through holes formed along the circumferential direction. The recess may be formed by embossing. The size of the recess in the longitudinal direction of the filter may be 0.2 mm or more and 3 mm or less, and the depth of the recess from the outer circumferential surface may be 50 μm or more and 5 mm or less.

[0007] According to the present disclosure, it is possible to suppress positional deviation in a direction perpendicular to the direction in which the exterior member is fed out.

[0008] 1 is a perspective view showing an example of the appearance of a flavor suction article according to a first embodiment; FIG. 2 is a diagram showing an example of a longitudinal section of a flavor suction article according to a first embodiment; FIG. 3 is a cross-sectional view showing an example of a transverse section taken along line III-III of FIG. 2; FIG. 4 is a diagram showing an example of a process for manufacturing a flavor suction article; FIG. 5 is a diagram showing an example of a device used to supply a web serving as a base for a connecting member to a first intermediate product; FIG. 6 is a diagram showing an example of a manner in which a user holds a flavor suction article; FIG. 7 is a diagram showing an example of a schematic configuration of a flavor suction article according to a second embodiment; FIG. 8 is a diagram showing an example of a schematic configuration of a flavor suction article according to a third embodiment; FIG. 9 is a diagram showing an example of a schematic configuration of a flavor suction article according to a fourth embodiment; (A) is a diagram showing an example of a schematic configuration of a communicating passage according to a first modified example; (B) is a diagram showing an example of a schematic configuration of a communicating passage according to a second modified example; (A) is a diagram showing an example of a schematic configuration of a communicating passage formed in a recess according to a modified example; (B) is a diagram showing an example of a schematic configuration of a communicating passage formed in a recess according to a modified example.

[0009] 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.

[0010] First Embodiment FIG. 1 is a perspective view showing an example of the appearance of a flavor inhalation article 1 according to the first embodiment. FIG. 2 is a view showing an example of a longitudinal section of the flavor inhalation article 1 according to the first embodiment. FIG. 3 is a cross-sectional view showing an example of a transverse section taken along line III-III in FIG. 2. The flavor inhalation article 1 according to the first embodiment includes a substrate 10, a filter 20, and a connecting member 30 connecting the substrate 10 and the filter 20. The flavor inhalation article 1 can be exemplified as a cigarette that generates smoke by burning tobacco leaves, or a non-combustion heat-type smoking article that releases tobacco components together with added glycerin by heating. The substrate 10 is formed in a cylindrical shape. Hereinafter, the direction of the center line CL of the substrate 10 may be referred to as the "center line direction." The flavor inhalation article 1 is wound around the connecting member 30 so as to integrate the substrate 10 and the filter 20, arranged in that order, in the center line direction. Hereinafter, one end side in the centerline direction (the left side in FIG. 2 ) may be referred to as the first side, and the other end side in the centerline direction (the right side in FIG. 2 ) may be referred to as the second side. The first side is the end side that is ignited or heated during inhalation and is the upstream side in the flow of aerosol during inhalation. The second side is the opposite side to the first side, the end side that the user holds in their mouth for inhalation (the mouthpiece end side) and is the downstream side in the flow of aerosol during inhalation. Furthermore, a cross section along the centerline direction is referred to as a "longitudinal cross section," and a cross section cut along a plane perpendicular to the centerline direction is defined as a "transverse cross section." The transverse cross section of the flavor inhalation article 1 is substantially circular, and its circumference can be adjusted appropriately depending on the size of the product, but is typically 16 mm to 27 mm, and preferably 21 mm to 25 mm. If the transverse 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 or more and 100 mm or less, and preferably 50 mm or more and 85 mm or less.

[0011] (Substrate 10) The substrate 10 includes a flavor source 11 containing an aerosol source and a cigarette paper 12 (an example of a first wrapping member) that covers the outer periphery of the flavor source 11. The aerosol source generates vapor that generates an aerosol when burned or heated. The substrate 10 is formed into a cylindrical shape with the centerline direction as the longitudinal direction by wrapping the flavor source 11 in the cigarette paper 12. However, the shape of the substrate 10 is not limited to a cylindrical shape. The flavor source 11 can be, for example, a tobacco-derived flavor source, such as a processed product obtained by molding tobacco shreds or tobacco raw materials into granules, sheets, or powder. The flavor source 11 may also include a non-tobacco-derived flavor source made from plants other than tobacco (e.g., mint, herbs, etc.). As an example, the flavor source 11 may contain a flavoring. The type of flavoring is not particularly limited, and menthol is particularly preferred from the viewpoint of imparting a good flavor. These flavorings may be used alone or in combination. The flavor 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. The cross-sectional area and centerline size of the base material 10, and the content of the flavor source 11 can be appropriately changed according to the size of the flavor inhalation article 1.

[0012] Furthermore, when the flavor source 11 is derived from tobacco, the type of tobacco used is not particularly limited, and various known types can be used. Examples of types of tobacco include flue-cured tobacco, burley tobacco, oriental tobacco, native tobacco, other Nicotiana tabacum varieties, Nicotiana rustica varieties, and mixtures thereof. Mixtures are used by appropriately blending various varieties to achieve the desired flavor. Furthermore, even when the flavor source 11 is derived from tobacco, it may contain extracts and / or components thereof from various natural products depending on the intended use. Examples of extracts and / or components thereof include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.

[0013] Furthermore, when the flavor source 11 is a processed product obtained by forming tobacco shreds or tobacco raw materials into a sheet (hereinafter referred to as "tobacco sheet"), it can be appropriately manufactured by known methods such as papermaking, slurrying, rolling, etc. Furthermore, the tobacco sheet may be produced by grinding dried tobacco leaves to obtain tobacco grounds, homogenizing this using known means, and then processing it into a sheet. The number of tobacco sheets may be one or two or more. 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 thickness of each tobacco sheet may be the same or different.

[0014] In the case where the flavor source 11 is composed of a single tobacco sheet, for example, a tobacco sheet having one side of the same size as the size of the base material 10 in the center line direction is filled in a state where it is folded back multiple times horizontally to the center line direction of the base material 10 (so-called gathered sheet). Another example is a tobacco sheet having one side of the same size as the size of the base material 10 in the center line direction is filled in a state where it is wound in a direction perpendicular to the center line direction of the base material 10.

[0015] In a case where the flavor source 11 is composed of two or more tobacco sheets, for example, a plurality of tobacco sheets, each having a side size approximately the same as the size of the substrate 10 in the center line direction, are packed in a state of being wound in a direction perpendicular to the center line direction of the substrate 10 so as to be concentrically arranged. "Concentrically arranged" means that the centers of all the tobacco sheets are arranged at approximately the same position. The flavor source 11 may also be a shredded tobacco sheet. Furthermore, the flavor source 11 may be a so-called strand type, in which tobacco sheets having a size approximately the same as the size of the substrate 10 in the center line direction are shredded approximately horizontally to the center line direction and packed.

[0016] The configuration of the cigarette paper 12 is not particularly limited and can be any common embodiment, such as one containing pulp as the main component. The pulp may be made from wood pulp such as softwood pulp or hardwood pulp, or may be made by mixing non-wood pulp 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. The cigarette paper 12 tightly wraps around the outer periphery of the substrate 10. The paper wrapper 12 is a flax paper of about 5 to 100 CORESTA (defined as the amount of air measured in cubic centimeters that passes through one square centimeter of material, e.g., a paper sheet, per minute at a pressure drop of 1.0 kilopascal), more preferably about 10 to 45 CORESTA, and has a density of about 23 to 35 grams per square meter (g / m ２ ) basis weight, more preferably about 23 to 30 g / m ２ and has about 23 to 35% by weight, more preferably 28 to 33% by weight, of a filler (preferably calcium carbonate). The wrapping paper 12 contains sodium citrate or other combustion improver, with preferred levels of sodium citrate ranging from 0 to about 2.6% by weight of the paper.

[0017] The shape of the wrapping paper 12 used to produce the substrate 10 can be, for example, a square or a rectangle. When wrapping the flavor source 11 in the wrapping paper 12 into a cylindrical shape, for example, an end of the wrapping paper 12 and an end of the wrapping paper 12 on the opposite side are overlapped by about 2 mm in the circumferential direction and glued together to form a cylindrical paper tube shape in which the substrate 10 is filled. The size of the wrapping paper 12 can be determined depending on the size of the substrate 10.

[0018] 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 it may be an agent that can form a film on the surface of the paper and reduce liquid permeability. 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).

[0019] (Filter Unit) The filter unit 20 is located on the second side (downstream side) of the base unit 10. The filter unit 20 has a filter 21 through which the aerosol passes and a wrapping paper 22 (an example of a second wrapping member) wrapped around the outer peripheral surface of the filter 21. The filter unit 20 is formed into a cylindrical shape with the center line direction as the longitudinal direction by wrapping the filter 21 around the wrapping paper 22. However, the filter unit 20 is not limited to a cylindrical shape. Furthermore, the filter unit 20 is connected to the base unit 10 by being wound around the end of the second side of the base unit 10 using a connecting member 30. When a user inhales an aerosol, the aerosol generated by the flavor source 11 of the base unit 10 passes through the filter 21 and is inhaled by the user.

[0020] The filter 21 is not particularly limited as long as it includes a filter material and has the general functions of a filter. Examples of the general functions of a filter include reducing nicotine and tar, as well as reducing unpleasant sensations such as irritation. The filter material constituting the filter 21 is, for example, a cylindrically shaped filler made of acetate, charcoal, cellulose fiber, nonwoven fabric, pulp paper, or the like. Alternatively, a paper filter filled with sheet-like pulp paper may be used.

[0021] The wrapping paper 22 may be made primarily of pulp. Pulp may be made from wood pulp, such as softwood pulp or hardwood pulp, or may be made by blending non-wood pulp, such as flax pulp, hemp pulp, sisal pulp, or esparto, which are commonly used in tobacco wrapping papers. These pulps may be used alone or in any combination of two or more types. The wrapping paper 22 may also contain a filler, such as calcium carbonate.

[0022] The wrapping paper 22 may be of any configuration, including one or more rows of seams containing adhesive. The adhesive may include a hot melt adhesive, which may further include polyvinyl alcohol. The wrapping paper 22 may be coated or uncoated, but is preferably coated with a desired material to provide functions such as strength and structural rigidity. The wrapping paper 22 may also be porous paper having multiple pores and providing breathability.

[0023] The shape of the wrapping paper 22 used to produce the filter unit 20 can be, for example, a square or rectangular. When the filter 21 is wound with the wrapping paper 22 into a cylindrical shape, for example, an end of the wrapping paper 22 and an end of the wrapping paper 22 on the opposite side are overlapped by about 2 mm in the circumferential direction and glued together to form a cylindrical paper tube shape in which the filter 21 is filled. The size of the wrapping paper 22 can be determined depending on the size of the filter unit 20. Note that the filter unit 20 may not have a wrapping paper 22, and a connecting member 30 may be wound around the outer peripheral surface of the filter 21.

[0024] (Connecting member 30) The connecting member 30 is wound so as to cover at least a portion of the outer circumferential surface of the base member 10 and at least a portion of the outer circumferential surface of the filter member 20, and connects the base member 10 and the filter member 20. The connecting member 30 according to the first embodiment is wound so as to cover the second-side end of the base member 10 and the entire filter member 20. The shape of the connecting member 30 before being wound can be, for example, a square or a rectangle.

[0025] The material of the connecting member 30 is not particularly limited, and examples thereof include a material containing pulp as a 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 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.

[0026] In addition to the materials described above, the connecting member 30 may contain fillers, such as calcium carbonate, to improve whiteness and opacity and increase the heating rate. In addition to the materials and fillers described above, the connecting member 30 may contain various auxiliary agents, such as a water resistance improver including a wet strength agent (WS agent) and a sizing agent. These fillers may be used alone or in combination.

[0027] A coating agent may be added to at least one of the two surfaces, the front and back surfaces, of the connecting member 30. The coating agent is not particularly limited, but a coating agent capable of forming a film on the surface and reducing liquid permeability is preferred. A portion of the outer surface of the connecting member 30 may be coated with a known lip release material. The lip release material refers to a material configured to help the lips and the connecting member 30 easily separate without substantial adhesion when the user holds the second end of the flavor inhalation article 1 between their mouths. The lip release material may include, for example, ethyl cellulose, methyl cellulose, etc. For example, the outer surface of the connecting member 30 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 connecting member 30.

[0028] The connecting member 30 has a recess 32 recessed from the outer peripheral surface 31 along the entire circumferential direction. The recess 32 is composed of a bottom portion 32b having a surface parallel to the centerline direction, and side portions 32s provided at both ends of the bottom portion 32b in the centerline direction and having surfaces perpendicular to the centerline direction. The recess 32 is formed in a position corresponding to the filter portion 20. In other words, the position of the recess 32 in the centerline direction overlaps with the position where the filter portion 20 is provided.

[0029] The recess 32 is formed at one location in the center line direction. The recess 32 is formed at a position 8 mm or more away from the end face on the second side in the center line direction of the filter part 20 to the first side. For example, the recess 32 can be formed by embossing a base material that serves as a base for the connecting member 30.

[0030] A through hole 33 communicating between the outside and the inside is formed in the bottom 32b of the recess 32. A plurality of through holes 33 are formed along the circumferential direction. For example, a method for forming the through holes 33 may be exemplified by winding the connecting member 30 around the wrapping paper 22 of the filter section 20 and then irradiating the bottom 32b of the recess 32 with laser light from the outside. The intensity of the laser light may be adjusted to an intensity sufficient to form the through holes 23 penetrating the wrapping paper 22. This simultaneously forms the through holes 33 in the connecting member 30 and the through holes 23 in the wrapping paper 22. These through holes 33 in the connecting member 30 and the through holes 23 in the wrapping paper 22 form a communicating passage 40 communicating between the outside of the flavor inhalation article 1 and the filter 21 disposed inside. The method for forming the communicating passage 40 formed by the through holes 33 in the connecting member 30 and the through holes 23 in the wrapping paper 22 is not limited to laser. For example, electrical discharge or a needle may also be used.

[0031] (Communicating Path 40) The communicating path 40 connects the outside and the inside of the flavor inhalation article 1. Therefore, the communicating path 40 allows air from outside the flavor inhalation article 1 to flow into the inside during inhalation. The shape of the communicating path 40 can be, for example, a cylindrical shape, an elliptical cylindrical shape, a long-hole cylindrical shape, a polygonal cylindrical shape, or a rounded polygonal cylindrical shape. For example, the diameter of the circle of the cylindrical shape is 200 μm to 1000 μm, and the major axis of the ellipse of the elliptical cylindrical shape is 500 μm to 2000 μm, and the minor axis is 100 μm to 500 μm. For example, the long hole of the long-hole cylindrical shape has a width of 100 μm to 500 μm and a length of 500 μm to 2000 μm. For example, the circle-equivalent diameter of the polygon of the polygonal cylindrical shape is 200 μm to 1000 μm. The circle-equivalent diameter refers to the diameter of a circle calculated from the area of ​​the communicating passage 40. The communicating passage 40 is preferably positioned in the center line direction in a region more than 8 mm from the end face of the filter section 20 on the opposite side (downstream side) from the substrate section 10. In other words, the communicating passage 40 is preferably positioned in the center line direction in a region more than 8 mm from the end face on the mouth end side where the user holds the flavor inhalation article 1 in their mouth. The region 8 mm or less from the end face on the mouth end side is the region where the user is expected to hold the flavor inhalation article 1 in their mouth. Therefore, by forming the communicating passage 40 in a region more than 8 mm from the end face on the mouth end side, it is possible to prevent the communicating passage 40 from being blocked by the lips.

[0032] The presence of the communication passage 40 that connects the outside and the inside of the flavor inhalation article 1 allows air to flow from the outside into the inside of the filter unit 20 when a user inhales the flavor inhalation article 1. This makes it possible to adjust the concentration of the inhaled flavor components and aerosol. It also makes it possible to lower the temperature of the steam and air flowing in from the substrate unit 10. Note that when the substrate unit 10 is burned or heated, steam generated with aerosol as condensation nuclei comes into contact with air from the outside and its temperature drops, liquefying, thereby accelerating the generation of aerosol.

[0033] The intensity of the laser light irradiated after the connecting member 30 is wound around the wrapping paper 22 of the filter section 20 may be such that it penetrates the connecting member 30 but not the wrapping paper 22. Similarly, when a needle is used, it may penetrate the connecting member 30 but not the wrapping paper 22. Even in such a case, if the wrapping paper 22 is porous paper having a plurality of pores and exhibiting breathability, the through-holes 33 of the connecting member 30 and the pores of the wrapping paper 22 form a communication passage 40 that connects the outside of the flavor inhalation article 1 with the filter 21 arranged inside.

[0034] Furthermore, if the wrapper paper 22 is porous paper having a plurality of pores and exhibiting breathability, the through holes 33 may be formed before the connecting member 30 is wound around the wrapper paper 22 of the filter unit 20. In other words, the connecting member 30 with the through holes 33 formed therein may be wound around the wrapper paper 22 of the filter unit 20. The method for forming the through holes 33 in the connecting member 30 before winding the connecting member 30 around the wrapper paper 22 is not particularly limited. For example, the base material that forms the connecting member 30 may be irradiated with laser light. Alternatively, the through holes 33 may be formed in the connecting member 30 using electrical discharge or a needle. Alternatively, the through holes 33 may be formed using a mold simultaneously with embossing to form the recesses 32 in the base material that forms the connecting member 30.

[0035] As described above, the flavor inhalation article 1 includes the substrate part 10 having the flavor source 11 including an aerosol source, the filter part 20 having the filter 21 located downstream of the substrate part 10, and the connecting member 30 (an example of an exterior member) provided so as to cover at least a part of the outer circumferential surfaces of the substrate part 10 and the filter part 20. The connecting member 30 has a recess 32 recessed from the outer circumferential surface 31.

[0036] 4 is a diagram showing an example of a process for manufacturing the flavor inhalation article 1. Here, the flavor inhalation article 1 can be manufactured as follows. That is, first, a filter plug 120 having a filter portion 20 formed to a length equivalent to two of the filters is placed between two substrate portions 10 to form a first intermediate product 111. Then, a pre-cut connecting member 130 having a length equivalent to two of the connecting members 30, which has been coated with glue on one side and cut to a predetermined length, is wrapped around the first intermediate product 111 to form a second intermediate product 112 consisting of two flavor inhalation articles 1. Then, the second intermediate product 112 is cut at its longitudinal center (the center of the pre-cut connecting member 130) to form the flavor inhalation article 1.

[0037] FIG. 5 is a diagram showing an example of an apparatus used to supply the web W, which serves as the base of the connecting member 30, to the first intermediate product 111. The web W, which serves as the base of the connecting member 30 and is unwound from a roll, has two recesses 132, which serve as the bases of the recesses 32. The web W is guided to the drum D. Two protrusions D1 on the drum D fit into the recesses 132 on the web W, thereby suppressing misalignment in a direction perpendicular to the unwinding direction of the web W (connecting member 30). As a result, longitudinal misalignment of the pre-cut connecting member 130 relative to the first intermediate product 111 is suppressed. In other words, since the recesses 32 are formed in the connecting member 30 of the flavor inhalation article 1, misalignment in a direction perpendicular to the unwinding direction of the connecting member 30 (web W) is suppressed, and variation among a plurality of flavor inhalation articles 1 is suppressed. Note that convex portions similar to the two convex portions D1 provided on the drum D are provided on the roll, and these convex portions fit into the concave portions 132 of the web W, thereby suppressing misalignment of the web W when it is unwound from the roll. Also, convex portions similar to the two convex portions D1 provided on the drum D are provided on a member that guides the transport of the web W, and these convex portions fit into the concave portions 132 of the web W, thereby suppressing misalignment of the web W when it is transported.

[0038] Furthermore, in a bobbin having a core and a web W wound around the core, if the web W does not have recesses 132 formed therein, the web W may fall off the core. Furthermore, when the bobbin is attached to the device and the supply of the web W from the bobbin begins, if the device grips the end of the web W and pulls out the web W, if the web W is misaligned with the core, the device may not properly grip the end of the web W. In response to such concerns, in this embodiment, the recesses 132 formed in the web W generate a high resistance force between the wound web W, thereby preventing the web W from falling off the core.

[0039] Furthermore, in the flavor inhalation article 1, a through-hole 33 that connects the outside to the inside is formed in the bottom 32b of the recess 32 of the connecting member 30. The through-hole 33, together with the through-hole 23 formed in the wrapping paper 22, constitutes a communication path 40 that connects the outside of the flavor inhalation article 1 to the inside of the filter section 20. Furthermore, if the wrapping paper 22 is porous paper that has a plurality of pores and is breathable, the through-hole 33, together with the plurality of pores in the wrapping paper 22, constitutes the communication path 40.

[0040] 6 is a diagram showing an example of a state in which a user holds the flavor inhalation article 1. The flavor inhalation article 1 configured as described above can provide the user with a desired flavor with a high degree of accuracy. That is, even if the user holds the recess 32 with their fingers as shown in FIG. 6 during inhalation, the opening 41 of the communication passage 40 (through hole 33) formed in the recess 32 is unlikely to be blocked.

[0041] If the opening 41 of the communication passage 40 were to be blocked, it might be impossible to take in the amount of air necessary to provide the desired flavor into the flavor inhalation article 1 through the communication passage 40, and therefore the desired flavor might not be provided to the user. In contrast, in the flavor inhalation article 1, the opening 41 of the communication passage 40 is unlikely to be blocked, and therefore the amount of air necessary to provide the desired flavor can be taken in through the communication passage 40. Therefore, the flavor inhalation article 1 can provide the user with the desired flavor.

[0042] The size L (see FIG. 2 ) of the recess 32 in the centerline direction (longitudinal direction of the filter unit 20) can be, for example, 0.2 mm or more and 3 mm or less, and the depth F (see FIG. 2 ) of the recess 32 from the outer peripheral surface 31 can be, for example, 50 μm or more and 5 mm or less. This is set in consideration of the following factors: If the size L is too small, it becomes difficult to accurately irradiate the bottom portion 32 b (see FIG. 2 ) with the laser for forming the through-hole 33. On the other hand, if the size L is too large, the effect of suppressing misalignment may be weakened depending on the width of the protrusion D1 provided on the drum D. Furthermore, if the size L is too large, the user's finger may penetrate deep into the recess 32 and easily block the opening 41 of the communicating passage 40. Furthermore, if the depth F is too small, the engagement with the protrusion D1 provided on the drum D may easily come loose. Furthermore, if the depth F is too small, the user's finger may easily block the opening 41 of the communicating passage 40. On the other hand, increasing the depth F requires increasing the thickness of the base material that forms the connecting member 30. Therefore, when the size L is 0.2 mm or more and 3 mm or less and the depth F is 50 μm or more and 5 mm or less, the flavor inhalation article 1 can provide the user with a desired flavor with high accuracy. Note that the lower limit of the depth F is 50 μm, but the depth F is preferably 55 μm or more, more preferably 60 μm or more, even more preferably 80 μm or more, and particularly preferably 100 μm or more. Note that the upper limit of the depth F is 5 mm, but is preferably 3 mm or less, more preferably 2 mm or less, even more preferably 1 mm or less, and particularly preferably 500 μm or less.

[0043] Furthermore, the thickness of the portion of the connecting member 30 where the recess 32 is not formed is thicker than the thickness of the portion (bottom 32b) where the recess 32 is formed. Therefore, the thickness of the portion that the user holds in their mouth for inhalation is thicker than the thickness of the portion where the recess 32 is formed. This makes it difficult to feel heat even if the temperature of the aerosol being inhaled rises.

[0044] Furthermore, in the flavor inhalation article 1, the recess 32 and the communication passage 40 are formed in a portion of the connecting member 30 corresponding to the filter 21. In other words, the communication passage 40 is not formed in a portion covering the outer circumferential surface of the base member 10. This is for the following reason. When the connecting member 30 is irradiated with laser light to form the communication passage 40, if the laser light is irradiated onto the flavor source 11 of the base member 10, the flavor source 11 may become hot and burn. Therefore, by not forming the communication passage 40 in a portion covering the outer circumferential surface of the base member 10, burning of the flavor source 11 can be prevented. However, for example, if it is possible to change the intensity of the laser light so that the flavor source 11 does not burn, the recess 32 and the communication passage 40 may be provided in a portion corresponding to the flavor source 11.

[0045] The recess 32 of the connecting member 30 is a portion recessed from the outer circumferential surface 31 over the entire circumferential direction, and a through-hole 33 is formed in the bottom 32b of the recess 32 along the circumferential direction, but is not particularly limited to this form. The recess 32 may be recessed, for example, in a U-shape or a rectangular shape, and at least one through-hole 33 may be formed in the bottom of the recess 32. The shape of the recess 32 is not particularly limited. In the flavor inhalation article 1 described above, the portion of the connecting member 30 where the recess 32 is not formed is formed with a uniform thickness, but is not particularly limited to this, and the thickness of a predetermined region of the connecting member 30 where the recess 32 is formed may be greater than the thickness of a region of the connecting member 30 other than the predetermined region.

[0046] <Second embodiment> Fig. 7 is a diagram showing an example of a schematic configuration 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 that a connecting member 230 corresponding to the connecting member 30 is provided. Hereinafter, the flavor inhalation article 2 according to the second embodiment will be described in terms of differences from the flavor inhalation article 1 according to the first embodiment, and the same reference numerals will be used to designate the same parts as those in the flavor inhalation article 1 according to the first embodiment, and detailed description thereof will be omitted.

[0047] The connecting member 230 according to the second embodiment is formed by stacking a plurality of sheet members. By varying the number of stacked sheet members, the connecting member 230 has a recess 232 recessed from an outer peripheral surface 231, similar to the recess 32 according to the first embodiment. The recess 232 is formed around the entire circumference at one location in the centerline direction, similar to the recess 32 according to the first embodiment.

[0048] 7, the connecting member 230 has a first sheet member 251 wound so as to cover at least a portion of the outer peripheral surface of the base member 10 and at least a portion of the outer peripheral surface of the filter unit 20, a second sheet member 252 wound so as to cover at least a portion of the outer peripheral surface of the first sheet member 251, and a third sheet member 253 wound so as to cover at least a portion of the outer peripheral surface of the second sheet member 252. The first sheet member 251, the second sheet member 252, and the third sheet member 253 can be, for example, molded from the same material as the connecting member 30 according to the first embodiment.

[0049] The first sheet member 251 is wrapped around the same region as the connecting member 30 according to the first embodiment. The second sheet member 252 is wrapped around the entire first sheet member 251 except for a predetermined region that forms the recess 232. That is, the second sheet member 252 is wrapped around the first sheet member 251 in a region on the first side of the predetermined region and a region on the second side of the predetermined region. The third sheet member 253 is wrapped around the entire second sheet member 252. As a result, the recess 232 is formed in the region of the first sheet member 251 that is not covered by the second sheet member 252 and the third sheet member 253. A through hole 233, similar to the through hole 33 according to the first embodiment, that connects the outside and the inside of the recess 232 is formed in the first sheet member 251 that forms the bottom of the recess 232.

[0050] As described above, the flavor inhalation article 2 includes the substrate part 10 having the flavor source 11 including an aerosol source, the filter part 20 having the filter 21 located downstream of the substrate part 10, and the connecting member 230 (an example of an exterior member) provided so as to cover at least a part of the outer circumferential surfaces of the substrate part 10 and the filter part 20. The connecting member 230 has a recess 232 recessed from the outer circumferential surface 231.

[0051] According to the flavor inhalation article 2, even if the user holds the recess 232 with his / her fingers when inhaling, the opening 241 of the communication passage 240 formed by the through hole 233 formed in the first sheet member 251 constituting the bottom of the recess 232 and the through hole 23 of the wrapping paper 22 is unlikely to be blocked, so that the desired flavor can be provided to the user with a high degree of certainty.

[0052] In the flavor inhalation article 2 described above, if the connecting member 230 has a recess 232 recessed from the outer peripheral surface 231, the second sheet member 252 does not have to be wrapped around the entire area other than a predetermined area on the first sheet member 251. For example, as long as the second sheet member 252 is wrapped around both sides of the predetermined area on the first sheet member 251, it does not have to be wrapped around the area on the end side of the second side of the flavor inhalation article 2. Furthermore, the third sheet member 253 does not have to be wrapped around the entire area on the second sheet member 252. For example, as long as the third sheet member 253 is wrapped around both sides of the predetermined area, it does not have to be wrapped around the area on the end side of the second side of the flavor inhalation article 2.

[0053] Furthermore, the second sheet member 252 and the third sheet member 253 do not have to be made of the same material as the first sheet member 251. For example, the second sheet member 252 and the third sheet member 253 may be made of a material other than paper containing pulp as a main component, for example, may be made of resin, as long as they are not wrapped around the end portion of the second side of the flavor inhalation article 2 and are not held in the user's mouth for inhalation.

[0054] Furthermore, two sheet members, the second sheet member 252 and the third sheet member 253, are stacked on the first sheet member 251, but the number of sheets to be stacked is not particularly limited. As long as the opening 241 of the communication passage 240 is not blocked, the number of sheets to be stacked on the first sheet member 251 may be one sheet, or three or more sheets.

[0055] Furthermore, if a recess 232 recessed from the outer peripheral surface 231 is formed in the connecting member 230, the second sheet member 252 and the third sheet member 253 may be stacked on top of the wrapping paper 22 of the filter section 20 without providing the first sheet member 251.

[0056] Furthermore, in the flavor inhalation article 2 described above, the recess 232 is formed by laminating the second sheet member 252 and the third sheet member 253 on the first sheet member 251. However, instead of laminating the second sheet member 252 and the third sheet member 253, the recess 232 may be formed by thickly applying the above-described lip release material. That is, the lip release material may be thickly applied to portions of the first sheet member 251 other than the predetermined region where the recess 232 is to be formed. Furthermore, the lip release material may be thickly applied only to regions on both sides of the predetermined region where the recess 232 is to be formed. Furthermore, the material applied to the regions on both sides of the predetermined region to form the recess 232 is not limited to the lip release material, and may be, for example, varnish.

[0057] <Third embodiment> Fig. 8 is a diagram showing an example of a schematic configuration of a flavor inhalation article 3 according to a third embodiment. The flavor inhalation article 3 according to the third embodiment differs from the flavor inhalation article 1 according to the first embodiment in that a recess 323 corresponding to the recess 32 is provided in a filter section 320 corresponding to the filter section 20. Hereinafter, the flavor inhalation article 3 according to the third embodiment will be described in terms of differences from the flavor inhalation article 1 according to the first embodiment, and the same reference numerals will be used to designate the same parts as those in the flavor inhalation article 1 according to the first embodiment, and detailed description thereof will be omitted.

[0058] The flavor inhalation article 3 includes a substrate portion 10, a filter portion 320, and a connecting member 330 corresponding to the connecting member 30. The filter portion 320 has a filter 21 and a wrapping paper 322 corresponding to the wrapping paper 22. The wrapping paper 322 has a recess 323 recessed from the outer peripheral surface 321 over the entire circumferential direction. The recess 323 is formed at one location in the center line direction. The recess 323 is formed at a position 8 mm or more away from the end face on the second side in the center line direction of the filter portion 320 to the first side. For example, the recess 323 can be formed by embossing the substrate that serves as the base of the wrapping paper 322.

[0059] A through-hole 325 that communicates between the outside and the inside is formed in the bottom 324 of the recess 323. A plurality of through-holes 325 are formed along the circumferential direction. The through-holes 325 form a communication passage 340 that communicates between the outside of the flavor inhalation article 3 and the filter 21 arranged inside. The method for forming the through-hole 325 can be, for example, the same as the method for forming the through-hole 33 in the connecting member 30.

[0060] The connecting member 330 is wound around the base member 10 so as to cover the outer peripheral surface of the second-side end portion of the base member 10 and at least a portion of the outer peripheral surface 321 of the filter member 320, thereby connecting the base member 10 and the filter member 320. The connecting member 330 is wound around the filter member 320 so as to cover a portion of the filter member 320 that is on the first side relative to the recess 323. As a result, the portion of the filter member 320 that is on the second side relative to the connecting member 330 is exposed to the outside. The second-side end portion of the filter member 320 may be coated with the above-mentioned lip release material or moisture-resistant coating agent.

[0061] As described above, the flavor inhalation article 3 includes the substrate 10 having the flavor source 11 containing an aerosol source, the filter 21 located downstream of the substrate 10, and the wrapper 322 (an example of an exterior member) provided so as to cover at least a portion of the outer circumferential surface of the filter 21. The wrapper 322 has a recess 323 recessed from the outer circumferential surface 321, and a through-hole 325 (communication passage 340) communicating between the outside and the inside is formed in the bottom 324 of the recess 323.

[0062] According to the flavor inhalation article 3, even if the user holds the recess 323 with his / her fingers when inhaling, the opening 341 of the communication passage 340 (through hole 325) formed in the bottom 324 of the recess 323 is unlikely to be blocked, so that the desired flavor can be provided to the user with a high degree of certainty.

[0063] The method of forming the recesses 323 in the paper roll 322 is not limited to embossing. For example, similar to the connecting member 230 according to the second embodiment, the paper roll 322 having the recesses 323 formed therein may be constructed by stacking a plurality of sheet members. Alternatively, the recesses 323 may be formed by applying a thick layer of the lip release material or varnish to areas of the paper roll 322 other than the area where the recesses 323 are to be formed.

[0064] <Fourth embodiment> Fig. 9 is a diagram showing an example of a schematic configuration of a flavor inhalation article 4 according to a fourth embodiment. The flavor inhalation article 4 according to the fourth embodiment differs from the flavor inhalation article 1 according to the first embodiment in that a recess 413 corresponding to the recess 32 is provided in a base member 410 corresponding to the base member 10. Hereinafter, the flavor inhalation article 4 according to the fourth embodiment will be described in terms of differences from the flavor inhalation article 1 according to the first embodiment, and the same reference numerals will be used to designate the same parts as those in the flavor inhalation article 1 according to the first embodiment, and detailed description thereof will be omitted.

[0065] The flavor inhalation article 4 includes a substrate portion 410, a filter portion 20, and a connecting member 430 corresponding to the connecting member 30. The substrate portion 410 includes a flavor source 11 and a wrapping paper 412 that covers the outer periphery of the flavor source 11. The wrapping paper 412 has a recess 413 recessed from the outer periphery 411 around the entire circumferential direction. The recess 413 is formed at one location in the center line direction. The recess 413 is formed at a position, for example, 5 mm or more away from the end face on the second side in the center line direction of the substrate portion 410 to the first side. For example, the recess 413 can be formed by embossing the substrate that serves as the base of the wrapping paper 412.

[0066] A through-hole 415 that connects the outside and the inside is formed in the bottom 414 of the recess 413. A plurality of through-holes 415 are formed along the circumferential direction. The through-holes 415 form a communication passage 440 that connects the outside of the flavor inhalation article 4 with the flavor source 11 arranged inside. The method for forming the through-hole 415 can be, for example, the same as the method for forming the through-hole 33 in the connecting member 30.

[0067] Similar to the connecting member 30 according to the first embodiment, the connecting member 430 is wound around the outer circumferential surface 411 of the second-side end of the base member 410 and the periphery of the filter unit 20, thereby connecting the base member 410 and the filter unit 20. The connecting member 430 is wound around the base member 410 so as to cover a portion of the base member 410 on the second side of the recess 413.

[0068] As described above, the flavor inhalation article 4 includes the flavor source 11 containing an aerosol source, the filter unit 20 having the filter 21 located downstream of the flavor source 11, and the wrapping paper 412 (an example of an exterior member) provided so as to cover at least a portion of the outer circumferential surface of the flavor source 11. The wrapping paper 412 is formed with a recess 413 recessed from the outer circumferential surface 411, and a through-hole 415 (communication passage 440) communicating between the outside and the inside is formed in the bottom 414 of the recess 413.

[0069] According to the flavor inhalation article 4, even if the user holds the recess 413 with his / her fingers when inhaling, the opening 441 of the communication passage 440 (through hole 415) formed in the bottom 414 of the recess 413 is unlikely to be blocked, so that the desired flavor can be provided to the user with high certainty.

[0070] The method of forming the recesses 413 in the wrapping paper 412 is not limited to embossing. For example, similar to the connecting member 230 according to the second embodiment, the wrapping paper 412 having the recesses 413 formed therein may be constructed by stacking a plurality of sheet members. Alternatively, the recesses 413 may be formed by applying a thick layer of the lip release material or varnish described above to areas of the wrapping paper 412 other than the area where the recesses 413 are to be formed.

[0071] <Modifications of communicating passage 40, communicating passage 240, communicating passage 340, communicating passage 440> As described above, communicating passage 40 is formed in the bottom 32b of recess 32, communicating passage 240 is formed in the bottom of recess 232, communicating passage 340 is formed in the bottom 324 of recess 323, and communicating passage 440 is formed in the bottom 414 of recess 413, but the present invention is not particularly limited to this embodiment. Below, modifications of communicating passage 40, communicating passage 240, communicating passage 340, and communicating passage 440 will be described using communicating passage 40. The modifications of communicating passage 240, communicating passage 340, and communicating passage 440 are similar to the modifications of communicating passage 40, and therefore detailed description thereof will be omitted.

[0072] Fig. 10(A) is a diagram showing an example of a schematic configuration of a communicating path 51 according to a first modified example of the communicating path 40. Fig. 10(B) is a diagram showing an example of a schematic configuration of a communicating path 52 according to a second modified example of the communicating path 40. The communicating path 51 according to the first modified example is formed in the side portion 32s of the recess 32. For example, the communicating path 51 can be formed by winding the connecting member 30 around the wrapper paper 22 of the filter unit 20, and then irradiating the side portion 32s of the recess 32 with laser light from the outside.

[0073] The communication passage 52 according to the second modification is formed in the bottom 32 b and the side 32 s of the recess 32. For example, the communication passage 52 can be formed by winding the connecting member 30 around the wrapping paper 22 of the filter unit 20, and then irradiating the connection between the bottom 32 b and the side 32 s of the recess 32 from the outside (in other words, the corner of the recess 32) with laser light.

[0074] 10(A) and 10(B) show an example in which the communication passages 51 and 52 are formed on the second side 32s of the recess 32, but the communication passages 51 and 52 may also be formed on the first side 32s of the recess 32. When the communication passages 51 and 52 are formed on the second side 32s, the outside air is taken in at an acute angle with the direction of the aerosol flow, making it possible to take in the outside air with high accuracy. On the other hand, when the communication passages 51 and 52 are formed on the first side 32s, it is possible to take in the outside air further upstream.

[0075] <Modifications of Recess 32, Recess 232, Recess 323, and Recess 413> Recess 32, recess 232, recess 323, and recess 413 each include a bottom (e.g., bottom 32b) having a surface parallel to the centerline direction, and side portions (e.g., side portions 32s) provided at both ends of the bottom in the centerline direction and having surfaces perpendicular to the centerline direction, but are not limited to this configuration. Below, modifications of recess 32, recess 232, recess 323, and recess 413 will be described using recess 32. The modifications of recess 232, recess 323, and recess 413 are similar to the modifications of recess 32, and therefore detailed description thereof will be omitted.

[0076] FIG. 11A is a diagram showing an example of a schematic configuration of a communicating passage 51 formed in a recess 35 according to a modified example. FIG. 11B is a diagram showing an example of a schematic configuration of a communicating passage 52 formed in a recess 35 according to a modified example. The recess 35 according to the modified example includes a bottom 35b (e.g., corresponding to the bottom 32b) having a surface parallel to the centerline direction and a side 35s having an inclined surface 35i inclined with respect to the centerline direction and forming an obtuse angle with the surface of the bottom 35b parallel to the centerline direction. As shown in FIG. 11A , the communicating passage 51 according to the first modified example may be formed by irradiating the inclined surface 35i of the side 35s with laser light. In this way, forming the inclined surface 35i on the side 35s of the recess 35 and irradiating the inclined surface 35i with laser light makes it easier to form the communicating passage 51. 11B , the communicating passage 52 according to the second modified example may be formed by irradiating a connection between the bottom 35 b and the side 35 s (in other words, a corner of the recess 35) with laser light. The inclined surface of the side 35 s of the recess 35 according to the modified example may be a surface that forms an acute angle with a surface of the bottom 35 b that is parallel to the center line direction. Furthermore, in the recess 35 according to the modified example, the bottom 35 b may have a surface that inclines toward the center line. When the bottom 35 b has a surface that inclines toward the center line, the angle formed between the surface of the bottom 35 b inclined toward the center line and the surface of the side 35 s may be either an acute angle or an obtuse angle.

[0077] <Summary> The present disclosure includes the following configurations: (1) A flavor inhalation article comprising: a flavor source; a filter located downstream of the flavor source; and an exterior member provided so as to cover at least a portion of the outer circumferential surface of at least one of the flavor source or the filter, wherein the exterior member has a recess formed in the outer circumferential surface, and a communication passage connecting the outside and the inside formed in at least one of the bottom and side of the recess. (2) The flavor inhalation article described in (1), wherein the exterior member has a connecting member wound so as to cover at least a portion of the outer circumferential surface of a first winding member wound around the flavor source and at least a portion of the outer circumferential surface of a second winding member wound around the filter, and connects the first winding member and the second winding member, and the recess is formed in the connecting member. (3) The flavor inhalation article described in (2), wherein the recess and the communication passage are formed in a portion of the connecting member corresponding to the filter. (4) The flavor inhalation article according to (1), wherein the exterior member has a first winding member wound around the flavor source and a second winding member wound around the filter, and the recess is formed in at least one of the first winding member and the second winding member. (5) The flavor inhalation article according to (4), wherein the recess and the communication path are formed in the second winding member. (6) The flavor inhalation article according to any one of (1) to (5), wherein the recess is formed around the entire circumference. (7) The flavor inhalation article according to any one of (1) to (6), wherein the recess is formed at one location in the longitudinal direction of the filter. (8) The flavor inhalation article according to any one of (1) to (7), wherein the communication path is a plurality of through-holes formed along the circumferential direction. (9) The flavor inhalation article according to any one of (1) to (8), wherein the recess is formed by embossing. (10) A flavor inhalation article described in any one of (1) to (9), wherein the longitudinal size of the filter in the recess is 0.2 mm or more and 3 mm or less, and the depth of the recess from the outer surface is 50 μm or more and 5 mm or less.

[0078] 1, 2, 3, 4... flavor inhalation article, 10... substrate portion, 11... flavor source, 12, 412... wrapping paper, 20... filter portion, 21... filter, 22, 322... wrapping paper, 23, 33, 233, 325, 415... through hole, 30, 230, 330, 430... connecting member, 32, 35, 232, 323, 413... recess, 40, 51, 52, 240, 340, 440... communicating passage

Claims

1. A flavor inhalation article comprising: a flavor source; a filter located downstream of the flavor source; and an exterior member provided so as to cover at least a portion of the outer circumferential surface of at least one of the flavor source or the filter, wherein a recess recessed from the outer circumferential surface is formed in the exterior member, and a communication passage connecting the outside and the inside is formed in at least one of the bottom and side of the recess.

2. The flavor inhalation article according to claim 1, wherein the exterior member has a connecting member wound so as to cover at least a portion of the outer circumferential surface of a first winding member wound around the flavor source and at least a portion of the outer circumferential surface of a second winding member wound around the filter, connecting the first winding member and the second winding member, and the recess is formed in the connecting member.

3. The flavor inhalation article according to claim 2, wherein the recess and the communication passage are formed in a portion of the connecting member corresponding to the filter.

4. The flavor inhalation article according to claim 1, wherein the exterior member has a first winding member wound around the flavor source and a second winding member wound around the filter, and the recess is formed in at least one of the first winding member and the second winding member.

5. The flavor inhalation article according to claim 4, wherein the recess and the communication passage are formed in the second winding member.

6. The flavor inhalation article according to any one of claims 1 to 5, wherein the recess is formed around the entire periphery.

7. The flavor inhalation article according to any one of claims 1 to 6, wherein the recess is formed at one location in the longitudinal direction of the filter.

8. The flavor inhalation article according to any one of claims 1 to 7, wherein the communication passages are a plurality of through holes formed along the circumferential direction.

9. The flavor inhalation article according to any one of claims 1 to 8, wherein the recesses are formed by embossing.

10. A flavor inhalation article according to any one of claims 1 to 9, wherein the longitudinal size of the filter in the recess is 0.2 mm or more and 3 mm or less, and the depth of the recess from the outer peripheral surface is 50 μm or more and 5 mm or less.

Images