Filter portion for flavor inhalation article and flavor inhalation article

Abstract

The present disclosure provides a filter portion (30) for a flavor inhalation article (1), the filter portion comprising a paper filter and an object (33) disposed within the paper filter, where the object (33) is harder than a location of the paper filter where the object (33) is not disposed.

Description

Technical Field

[0001] The present disclosure relates to a filter portion for a flavored inhalation article and a flavored inhalation article. Background Art

[0002] PTL 1 discloses a cigarette that includes a tobacco rod and a filter element connected to the tobacco rod. The filter element has one end at the bottom end of the tobacco rod and one end at the distal end of the tobacco rod. The filter element includes a first filter material portion at the bottom end of the tobacco rod and a second longitudinally extending filter material portion arranged in a head-to-tail connection configuration. The first filter material portion is at the distal end of the tobacco rod, and the first filter material portion includes one or more tubes inserted into and extending through the first filter material portion.

[0003] Citation List

[0004] Patent Documents

[0005] PTL 1: JP 2014-509872 A Summary of the Invention

[0006] Technical Problem

[0007] In view of environmental factors, a paper filter can be used as a filter for a flavored inhalation article. Paper filters are generally softer than filters using fibers such as cellulose acetate. Therefore, it is desirable to improve the feel of hardness, etc. when holding the filter portion of the flavored inhalation article in the mouth or hand, and the ease of attaching the flavored inhalation article to a heat-not-burn inhalation device, etc., to prevent the filter portion from becoming too soft compared to when using cellulose acetate, etc.

[0008] An object of the present disclosure is to prevent the entire filter portion from becoming too soft due to the use of a paper filter in a flavored inhalation article, thereby improving the feel when held in the mouth or hand and the ease of attachment.

[0009] Solution to the Problem

[0010] To achieve this object, a first feature of the present disclosure is a filter portion for a flavored inhalation article, the filter portion including a paper filter and an object disposed within the paper filter, wherein the object is harder than the position of the paper filter where the object is not disposed.

[0011] A second feature is that when measured with a Borgwaldt DD60A, the hardness at the position of the filter portion corresponding to the object can be 85% or more.

[0012] The third feature is that at a strain rate of 10%, the stress at a predetermined strain at the position corresponding to the object in the filter part can be 1.0 N or more and 10 N or less.

[0013] The fourth feature is that at a strain rate of 10%, the stress at a predetermined strain at the position in the filter part that does not correspond to the object can be 0.2 N or more and 1.5 N or less.

[0014] The fifth feature is that the object can be an elongated hollow or solid three-dimensional body and can be arranged along the longitudinal direction of the filter part.

[0015] The sixth feature is that the paper filter can be a filter filled with sheet members.

[0016] The seventh feature is that the paper filter can be a filter filled with sheet members such that voids are formed across the longitudinal direction of the filter part.

[0017] The eighth feature is that the paper filter can be a filter in which the sheet members are curled therein.

[0018] The ninth feature is that the paper filter is a filter in which the sheet members are densely pleated therein.

[0019] The tenth feature is a flavor inhalation article, which includes a filter part for a flavor inhalation article and a substrate part, and the substrate part includes an aerosol source.

[0020] The eleventh feature is that the flavor inhalation article can be a heat-not-burn flavor inhalation article.

[0021] The twelfth feature is that the flavor inhalation article can be a combustible flavor inhalation article.

[0022] Advantages of the present invention

[0023] According to the first feature, it is possible to prevent the filter part of the flavor inhalation article from becoming too soft, thereby improving the feeling of holding the flavor inhalation article in the mouth or hand and the ease of attachment to a combustion device or the like.

[0024] According to the second feature, the filter part can have a specific hardness to prevent deformation, thereby improving the feeling of holding the flavor inhalation article in the mouth or hand and the ease of attachment to a combustion device or the like.

[0025] According to the third feature, the position corresponding to the object in the filter part can be within a specific stress range, thereby improving the feeling of holding the flavor inhalation article in the mouth or hand and the ease of attachment to a combustion device or the like.

[0026] According to the fourth feature, the positions of the filter part corresponding to the object and the positions not corresponding to the object can each be within a specific stress range, thereby improving the feeling of holding the flavor inhalation article in the mouth or hand and the ease of attachment to a combustion device or the like.

[0027] According to the fifth feature, a filter part of a flavor inhalation article can be provided, in which a paper filter is appropriately filled to achieve a suitable flavor.

[0028] According to the sixth feature, a filter part of a flavor inhalation article can be provided, which has suitable aerosol filtration performance and achieves a suitable flavor.

[0029] According to the seventh feature, a filter part having a suitable flavor can be provided, in which the delivery efficiency of the aerosol is adjusted.

[0030] According to the eighth feature, a filter part of a flavor inhalation article can be provided, in which a sheet member is filled to achieve a suitable flavor.

[0031] According to the ninth feature, a filter part of a flavor inhalation article can be provided, which has suitable aerosol filtration performance and achieves a suitable flavor.

[0032] According to the tenth to twelfth features, a flavor inhalation article can be provided, which prevents the filter part of the flavor inhalation article from becoming too soft, thereby improving the feeling of holding the flavor inhalation article in the mouth or hand and the ease of attachment to a combustion device or the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a diagram showing a longitudinal section of a flavor inhalation article according to the first embodiment.

[0034] Figure 2 is a schematic diagram schematically showing a configuration example of an inhalation device according to the first embodiment.

[0035] Figure 3 is a diagram showing an example of the configuration of a filter part according to the first embodiment, where (A) is Figure 1 a cross-section of cross-section I-I in Figure 1 and (B) is an example of a cross-section of cross-section II-II in

[0036] Figure 4 is a diagram showing another example of the configuration of a filter part according to the first embodiment, where (A) is Figure 1 a cross-section of cross-section I-I in Figure 1 and (B) is another example of a cross-section of cross-section II-II in​​​​

[0037] Figure 5 is a schematic view showing a filter portion of a heat-not-burn type flavor inhalation article according to a first embodiment.

[0038] Figure 6 is an explanatory view of a hardness measurement device according to a first embodiment, where (A) shows a perspective view of the entire device, and (B) shows an example of the device in use.

[0039] Figure 7 shows an example of the use of a hardness measurement device according to a first embodiment.

[0040] Figure 8 is a view showing another example of a longitudinal section of a flavor inhalation article according to a first embodiment, where (A) shows an object with a sharp second side, and (B) shows a longitudinal section of a flavor inhalation article with an object that narrows from a first side to a second side.

[0041] Figure 9 is a view showing another example of a longitudinal section of a flavor inhalation article according to a first embodiment, where (A) shows an object located on the second side within the filter, and (B) shows an object located closer to the center within the filter.

[0042] Figure 10 is a view showing another example of a longitudinal section of a flavor inhalation article according to a first embodiment, where (A) shows an object located within the filter and having the same size as the filter in the centerline direction, and (B) shows a plurality of objects located within the filter.

[0043] Figure 11 is a view showing a longitudinal section of a flavor inhalation article according to a second embodiment, where (A) shows an object located on the first side within the filter, and (B) shows an object located on the second side within the filter.

[0044] Figure 12 is a view showing another example of a longitudinal section of a flavor inhalation article according to a second embodiment, where (A) shows an object located on the first side within the filter, and (B) shows an object located on the second side within the filter.

[0045] Figure 13 is a view showing a longitudinal section of a flavor inhalation article according to a third embodiment, where (A) shows an object located on the first side of an aerosol modifier, and (B) shows an object located on the second side of the aerosol modifier.

[0046] Figure 14 ​​​​​​​​​​is a view showing a longitudinal section of a flavor inhalation article according to a fourth embodiment.

[0047] Figure 15 is a view showing another example of a longitudinal section of a flavor inhalation article according to a fourth embodiment, where (A) shows an object positioned on a second side within a filter, (B) shows an object positioned closer to a center within the filter, and (C) shows a plurality of objects positioned within the filter.

[0048] Figure 16 is a view showing a longitudinal section of a flavor inhalation article according to a fifth embodiment, where (A) shows an object positioned on a first side within a filter, and (B) shows an object positioned on a second side within the filter.

[0049] Figure 17 is a view showing a longitudinal section of a flavor inhalation article according to a fifth embodiment, where (A) shows an object positioned on a first side within a filter, and (B) shows an object positioned on a second side within the filter.

[0050] Figure 18 is a view showing a longitudinal section of a flavor inhalation article according to a sixth embodiment, where (A) shows an object positioned on a first side of an aerosol modifier, (B) shows an object positioned on a second side of the aerosol modifier, and (C) shows an object positioned on both the first side and the second side of the aerosol modifier.

[0051] Figure 19 is an explanatory view showing the definition of hardness in a first embodiment.

[0052] Figure 20 is a schematic explanatory view showing the stress at a predetermined strain in a first embodiment.

[0053] Figure 21 is a view schematically showing the relationship between strain rate and stress. Detailed Description

[0054] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In each drawing, the same reference numerals are used to denote the same parts.

[0055] <Heat-Not-Burn Flavor Inhalation Article>

[0056] Figure 1 is a view showing a longitudinal section of a heat-not-burn flavor inhalation article 1 according to a first embodiment. Figure 2 is a schematic view schematically showing a configuration example of an inhalation device 100 according to a first embodiment.

[0057] ​​​​​​​The heat-not-burn type flavor inhalation article 1 according to the first embodiment (hereinafter sometimes referred to as "flavor inhalation article 1") includes a substrate portion 10 and a filter portion 30. The flavor inhalation article 1 may further include a cooling portion 20. The mouthpiece section 50 is something that can be held in the user's mouth during inhalation, and in Figure 1 the example, the mouthpiece section includes the cooling portion 20 and the filter portion 30. The substrate portion 10 is formed in a cylindrical shape. Hereinafter, the direction of the center line CL of the substrate portion 10 may be referred to as the "center line direction". The flavor inhalation article 1 is wrapped in a state where the substrate portion 10, the cooling portion 20, and the filter portion 30 are arranged in order in the center line direction, thereby integrating them, and further includes a tipping paper 40.

[0058] Hereinafter, one end side in the center line direction ( Figure 1 the left side in ) may be referred to as the first side, and the other end side in the center line direction ( Figure 1 the right side in ) may be referred to as the second side. The first side is the end side inserted into the inhalation device 100 and is the upstream in the aerosol flow during inhalation. The second side is the side opposite to the first side and is the end side held in the user's mouth for inhalation and is the downstream in the aerosol flow during inhalation. In addition, the cross-section along the center line direction is referred to as the "longitudinal section", and the cross-section cut in a plane orthogonal to the center line direction is defined as the "cross-section".

[0059] [Usage form of flavor inhalation article 1]

[0060] The flavor inhalation article 1 according to the first embodiment is used in a non-combustion heating type inhalation device 100. As Figure 2 shown, the inhalation device 100 includes a power supply unit 111 for storing electric power and supplying electric power to each component of the inhalation device 100, a sensor unit 112 for detecting various information related to the inhalation device 100, and a notification unit 113 for notifying the user of the information. The inhalation device 100 further includes a memory unit 114 for storing various information for the operation of the inhalation device 100, a communication unit 115 for transmitting and receiving information between the inhalation device 100 and other devices, and a control unit 116 for controlling the overall operation in the inhalation device 100. In addition, the inhalation device 100 includes a heating unit 121 for heating the flavor inhalation article 1, a holding unit 140 for holding the flavor inhalation article 1, an opening 142 for communicating the internal space 141 with the outside, and a heat insulation unit 144 for preventing heat transfer from the heating unit 121 to other components of the inhalation device 100. In the inhalation device 100, when the flavor inhalation article 1 is held in the holding unit 140, the user inhales.

[0061] The heating unit 121 heats the substrate portion 10 of the flavor inhalation article 1. The heating unit 121 is formed of any material such as metal or polyimide. For example, the heating unit 121 is configured in a film shape and is provided to cover the outer circumference of the holding portion 140. When the heating unit 121 generates heat, the aerosol source 11 contained in the flavor inhalation article 1 is heated from the outer circumference of the flavor inhalation article 1. The heating unit 121 generates heat when powered by the power supply unit 111. As an example, power can 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 has reached a predetermined temperature, then inhalation by the user becomes possible. Subsequently, if the sensor unit 112 detects a predetermined user input, the power supply can be stopped. As another example, power can be supplied and aerosol can be generated during the period when the sensor unit 112 detects inhalation performed by the user.

[0062] The heat insulation unit 144 is arranged to cover at least the outer circumference of the heating unit 121. For example, the heat insulation unit 144 is constructed of a vacuum heat insulation material or an aerogel heat insulation material or the like. It should be noted that the vacuum heat insulation material is, for example, a heat insulation material that wraps glass wool and silica (silicon powder) in a resin film and creates a high vacuum state so that the heat conduction of the gas approaches zero.

[0063] [Flavor inhalation article 1]

[0064] The flavor inhalation article 1 is a heat-not-burn type flavor inhalation article.

[0065] The cross-section of the flavor inhalation article 1 is substantially circular, and the circumference can be appropriately changed according to the size of the product, but is generally 16 mm or more and 27 mm or less, preferably 21 mm or more and 23 mm or less. It should be noted that if the cross-section is not circular, the above-mentioned circumference is applied by using a circle having the same area as the cross-section, and the circumference of the circle is used.

[0066] The size of the flavor inhalation article 1 in the center line direction can be appropriately changed according to the size of the product, but is generally 40 mm or more and 100 mm or less, preferably 50 mm or more and 70 mm or less.

[0067] [Filter portion 30]

[0068] The filter portion 30, which is a feature of the flavor inhalation article 1 according to the first embodiment, will be described.

[0069] Figure 3 is a diagram showing an example of the configuration of the filter portion 30 according to the first embodiment, where (A) is Figure 1 the cross-section of cross-section I-I in, and (B) is Figure 1Example of the cross-section of the middle cross-section II-II. Figure 4 is a diagram showing another example of the configuration of the filter portion 30 according to the first embodiment, where (A) is the Figure 1 cross-section of the cross-section I-I in, and (B) is the Figure 1 another example of the cross-section of the cross-section II-II in. Figure 5 is a schematic diagram showing the filter portion 30 of the flavor inhalation article 1 according to the first embodiment.

[0070] The filter portion 30 is formed in a cylindrical shape, where the size in the center line direction is larger than the width of the cross-section. Therefore, the filter portion 30 is arranged such that the longitudinal direction is in the center line direction.

[0071] The filter portion 30 includes a filter 31 through which aerosol passes, an object 33 that changes the flow path inside the filter 31, and a wrapper 35 that exists between the filter 31 and the tipping paper 40 and wraps around the outer circumferential surface of the filter 31 (see Figure 1 ). By integrally wrapping the cooling portion 20 and the filter portion 30 using the tipping paper 40, the filter portion 30 is connected (coupled) to the cooling portion 20 (see Figure 1 ). It should be noted that the wrapper 35 may not be included.

[0072] There is no particular limitation on the pattern of the wrapper 35, and it may include a seam containing one or more rows of adhesive. The adhesive may include a hot-melt adhesive, and the hot-melt adhesive may further include polyvinyl alcohol. Moreover, if the filter portion 30 is composed of two or more members, it is preferred that the wrapper wraps each of the two or more members, and then they are further wrapped together with another wrapper.

[0073] There is no particular limitation on the material of the wrapper 35, and known materials can be used, and it may also include fillers such as calcium carbonate.

[0074] There is no particular limitation on the thickness of the wrapper 35, which is generally 20 μm or more and 140 μm or less, preferably 30 μm or more and 130 μm or less, more preferably 30 μm or more and 120 μm or less.

[0075] There is no particular limitation on the basis weight of the wrapper 35, which is generally 20 gsm or more and 100 gsm or less, preferably 22 gsm or more and 95 gsm or less, more preferably 23 gsm or more and 90 gsm or less.

[0076] There is no particular limitation on the air permeability of the wrapper paper 35, but it is generally 0 Coresta units or more and 30,000 Coresta units or less, preferably more than 0 Coresta units and 10,000 Coresta units or less.

[0077] In addition, the wrapper paper 35 may or may not be coated, but from the perspective of imparting functions other than strength and structural stiffness, the wrapper paper is preferably coated with a desired material.

[0078] The cross-section of the filter 31 of the filter component 30 is substantially circular, and the circumference can be appropriately changed according to the size of the product, but it can be 22 mm or more and 25 mm or less. It should be noted that if the cross-section is not circular, the above-mentioned circumference is applied by using a circle having the same area as the cross-section, and the circumference of the circle is used.

[0079] The size of the filter part 30 in the center line direction can be appropriately changed according to the size of the product, but it is generally 5.0 mm or more and 30.0 mm or less, preferably 12.5 mm or more and 27.5 mm or less, more preferably 15.0 mm or more and 25.0 mm or less.

[0080] There is no particular limitation on the air resistance per 10 mm of the filter part 30 in the center line direction, but it is generally 0 mmHg2O or more and 100 mmHg2O or less, preferably 10 mmHg2O or more and 80 mmHg2O or less, more preferably 10 mmHg2O or more and 50 mmHg2O or less.

[0081] According to the ISO standard method (ISO 6565), the air resistance is measured using, for example, a Cerulean filter air resistance measuring device. The air resistance of the filter part 30 refers to the pressure difference between the first side and the second side when air at a predetermined air flow rate (17.5 cc / min) flows from the first side to the second side in a state where the air does not pass through the side surface of the filter part 30. The unit is usually expressed in mmHg2O.

[0082] The filter 31 is a so-called paper filter, and is a paper filter in which voids 31b are formed as channels, and during inhalation of the flavor inhalation product 1 by the user, the aerosol can pass through the channels in the center line direction inside the filter 31. For example, the filter 31 is a paper filter formed by filling a sheet member 31a. Specifically, the filter 31 is a paper filter formed by being filled with the sheet member 31a to ensure an aerosol passage path extending in the center line direction.

[0083] There is no particular limitation on the packing density of the sheet member 31a constituting the filter 31, but it is generally 90 mg / cm³ or more and 720 mg / cm³ or less. As shown in Figure 5 the region 302, the packing density of the sheet member 31a in the region 302 where the object 33 is not provided is preferably 90 mg / cm³ or more and 360 mg / cm³ or less, more preferably 150 mg / cm³ or more and 240 mg / cm³ or less. Moreover, as shown in Figure 5 the region 301, the packing density of the sheet member 31a in the region 301 where the object 33 is provided is preferably 105 mg / cm³ or more and 720 mg / cm³ or less, more preferably 170 mg / cm³ or more and 480 mg / cm³ or less.

[0084] There is no particular limitation on the material of the sheet member 31a constituting the filter 31 as long as it can achieve the general functions of the filter, but it is preferably paper or a non-woven fabric having pulp as a main component, and more preferably paper. In addition, materials such as polymer sheets or metal sheets can be used for the sheet member 31a constituting the filter 31. The general functions of the filter include, for example, adjusting the amount of air mixed during aerosol inhalation, reducing flavor, and reducing nicotine and tar, but it is not necessary to have all of these functions. Compared with a tobacco product wrapped in paper, the heat-not-burn type flavor inhalation article 1 tends to have fewer generated components and a lower filling rate of the aerosol source 11. In these heat-not-burn type flavor inhalation articles, it is also important to prevent the members accommodated in the flavor inhalation article 1 from detaching while suppressing the filtering function.

[0085] From the perspective of achieving the general functions of the filter, the density of the sheet member 31a itself is preferably 0.05 g / cm³ or more, more preferably 0.5 g / cm³ or more. The thickness of the sheet member 31a 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.

[0086] In this embodiment, the filter 31 is formed of a sheet member 31a that is folded or provided with wrinkles or pleats, and is filled to ensure an aerosol passage path extending in the center line direction. Specifically, as shown in Figure 3 (A), the filter 31 is a paper filter filled with the sheet member 31a so as to form a gap 31b in the longitudinal direction across the filter portion 30, and is a paper filter having a pleated sheet member 31a. Here, "pleated" means that the sheet member 31a is filled in a state of being horizontally folded back multiple times in the center line direction of the filter 31.

[0087] The sheet member 31a constituting the filter 31 may be a single sheet or two or more sheets. Also, folding or wrinkling is not necessary as long as an aerosol passage path extending in the center line direction is ensured. Specifically, as Figure 4 shown in (A), the filter 31 may be a paper filter filled with strip-shaped sheet members 31a.

[0088] By curling the entire sheet member 31a, voids 31b can be efficiently formed in the sheet member 31a. Curling is a process of providing corrugations to the sheet member 31a. For example, by passing the sheet member 31a to be processed between a pair of rollers having a plurality of protrusions on the surface, corrugations extending orthogonally to the conveying direction of the sheet member 31a can be provided on both the front surface and the rear surface of the sheet member 31a, thereby performing curling.

[0089] The object 33 is disposed within the filter 31 and is a member that changes the flow path within the filter 31 and has a more suppressed filtering function for the aerosol passing through than the filter 31. In this embodiment, a paper filter is used, but a paper filter is generally softer than a filter using fibers (such as cellulose acetate), so the entire filter portion 30 becomes softer than when using fibers (such as cellulose acetate). The object 33 is made of a material harder than the position of the filter 31 where the object 33 is not provided to prevent the entire filter portion 30 from becoming too soft due to the use of the paper filter. Using the object 33 makes it possible to impart a desired hardness to a desired position of the filter portion 30, thereby improving the feeling of holding the flavor inhalation article in the mouth or hand, and further improving the ease of inserting and attaching the flavor inhalation article to the inhalation device when the flavor inhalation article is a heat-not-burn type.

[0090] There may be one object 33 or two or more. Specifically, as Figure 3 shown in (B), one object 33 may be disposed within the filter 31, or as Figure 4 shown in (B), a plurality of objects 33 may be disposed within the filter 31.

[0091] In the cross-section of the object 33, the shape of the outer circumference can be appropriately changed to match the shape of the filter portion 30. Typical examples of the shape of the outer circumference are circular, but elliptical, polygonal, rounded polygonal, etc. are also possible.

[0092] Moreover, in the cross-section, there is no particular limitation on the ratio of the area of the object 33 to the area of the filter portion 30, but it can be 15% or more and 50% or less, preferably 20% or more and 40% or less. It should be noted that when a plurality of objects 33 are disposed within the filter 31, preferably, the ratio of the total area of the plurality of objects 33 to the area of the filter portion 30 in one cross-section is within the above range. Also, asFigure 1 As shown, when the object 33 is a hollow member that is open at both ends in the center line direction, the internal area of the hollow member is also included in the area of the object 33 at the aforementioned area ratio.

[0093] When the shape of the outer circumference of the object 33 in the cross section is substantially circular, the circumference can be appropriately changed according to the size of the product, but is usually 6 mm or more and 15 mm or less, more preferably 9 mm or more and 11 mm or less. Moreover, the ratio of the circumference of the object 33 to the circumference of the filter 31 is usually 0.20 or more and less than 0.70, more preferably 0.35 or more and 0.50 or less. It should be noted that if the cross section is not circular, the above-mentioned circumference is applied by using a circle having the same area as the cross section, and the circumference of the circle is used.

[0094] In other words, the length of the object 33 in the longitudinal direction of the filter portion 30 is preferably not longer than the length of the filter 31 in the longitudinal direction of the filter portion 30. The object 33 is arranged along the longitudinal direction of the filter portion 30.

[0095] In addition, when the size of the object 33 in the center line direction is smaller than the size of the filter 31 in the center line direction, it is preferable that the difference between the size of the object 33 in the center line direction and the size of the filter 31 in the center line direction is 2 mm or more. By making the size of the object 33 in the center line direction smaller than the size of the filter 31, the object 33 does not protrude from at least one end face of the filter 31, thereby allowing the appearance of the end face of the filter 31 to be similar to the appearance of a filter used in a flavor inhalation article in the absence of the object 33. By making the object 33 at least 2 mm smaller than the filter 31 in the center line direction, the object 33 can be made invisible from at least one end of the filter 31.

[0096] The object 33 is preferably a hollow member having a hollow cross section and having at least one open end in the center line direction, more preferably a hollow member that is open at both ends in the center line direction. By making the object 33 a hollow member that is open at both ends in the center line direction, compared with a member having one closed end, the filtering function of the aerosol passing through can be suppressed, thereby improving the flavor delivery efficiency.

[0097] When the object 33 is a hollow member that is open at both ends in the center line direction, the aerosol passing through the object 33 is not filtered at all. In addition, a filtration rate lower than the filtration rate of the filter 31 includes a filtration rate of "0%". It should be noted that when the object 33 is a hollow member that is open at both ends in the center line direction, the flow path of the aerosol passing through the filter 31 is restricted within the object 33 or the filter 31. Therefore, in this case, the object 33 is also considered to be able to change the flow path of the aerosol within the filter 31.

[0098] Here, a specific example of the configuration of the object 33 will be described.

[0099] For example, the object 33 is a tube formed by winding a sheet member 31a so that its cross-section becomes hollow, such as a cylinder, and the sheet member includes a material similar to the sheet member 31a that constitutes the filter 31. Specifically, the object 33 is a paper tube formed by winding paper. By making the object 33 a paper tube, the material constituting the object 33 can be made substantially the same as the material of the filter 31.

[0100] The object 33 is a so-called spiral paper tube, which is a paper tube formed by spirally winding a plurality of sheet members 31a (at least including paper) that adhere to each other. In the manufacturing method of the spiral paper tube, a paper tube with a circular cross-section can be easily formed. By using a spiral paper tube for the object 33, the strength of the object 33 can be improved while suppressing the ratio of the area of the object 33 to the area of the filter part 30. In addition, by laminating a sheet member 31a containing a fragrance component, a flavor component, tobacco powder, etc. with paper, a new flavor can be imparted to the aerosol.

[0101] Alternatively, the object 33 can be a so-called straight paper tube, which is a paper tube formed by winding paper into a cylindrical shape multiple times. In the manufacturing method of the straight paper tube, compared with the manufacturing method of the spiral paper tube, the amount of glue used for adhering the paper can be reduced.

[0102] In addition, the object 33 can be a paper tube formed by laminating a plurality of sheet members 31a (at least including paper). By laminating a plurality of sheet members 31a, the strength of the object 33 can be maintained even when the basis weight of each sheet member 31a is small.

[0103] It should be noted that the object 33 is not limited to a paper tube formed by winding paper, and can be formed of a tube made of a synthetic resin or the like that already has a hollow cross-section. When the object 33 is a tube, there is no particular limitation on the wall thickness of the tube, which is generally 50 μm or more and 500 μm or less, preferably 100 μm or more and 250 μm or less. For example, when the sheet members 31a overlap, the total thickness of the overlapping sheet members 31a should be within the above range. By setting the wall thickness of the tube within the above range, deformation of the object 33 due to external pressure from the filter 31 or the like can be suppressed.

[0104] The object 33 is a hollow member having a hollow cross-section, but this configuration is not restrictive as long as the filtration rate is lower than that of the filter 31. The object 33 can be formed of a solid member (such as cellulose acetate fiber) having a solid cross-section, which has a lower filtration rate than paper.

[0105] In Figure 1In the illustrated example, the shape of the end portion of the object 33 in the center line direction is planar, but is not limited thereto and may not be planar.

[0106] In Figure 1 In the flavor inhalation article 1 according to the first embodiment shown, when measured with a Borgwaldt DD60A densitometer (manufactured by Borgwaldt, hereinafter referred to as "measuring device 8"), the hardness of the filter portion 30 at the position corresponding to the object 33 ( Figure 5 region 301 in) is preferably 85% or more, more preferably 90% or more. The hardness is theoretically 100% or less, and usually preferably 98% or less. When the hardness of the filter portion 30 satisfies these values, it becomes possible to impart the desired hardness to the desired position of the filter portion 30, thereby improving the feeling of holding the flavor inhalation article in the mouth or hand, and further improving the feasibility of inserting and attaching the flavor inhalation article to the inhalation device when the flavor inhalation article is a heat-not-burn type. It should be noted that the filter portion 30 to be measured refers to the columnar body formed by combining the filter 31 (in which the object 33 is provided) with the wrapper 35 and the tipping paper 40 wound around its outer circumferential surface. If there is no wrapper 35, it refers to the columnar body having the outer circumferential surface of the filter 31 wound with the tipping paper 40.

[0107] Will use Figure 6 、 Figure 7 And Figure 19 Explain hardness. Figure 6 It is an explanatory view of the hardness measuring device 8 according to the first embodiment, wherein (A) shows a perspective view of the entire measuring device 8, and (B) shows a usage example of the measuring device 8. Figure 7 Shows another usage example of the hardness measuring device 8 according to the first embodiment. Figure 19 It is an explanatory view showing the definition of hardness in the first embodiment.

[0108] In this embodiment, "hardness" means the resistance to deformation of the object to be measured.

[0109] When a load F is applied to the position of the filter portion 30 corresponding to the object 33 ( Figure 5 region 301 in), the filter portion deforms in the diameter direction (height direction). In the measuring device 8, the filter portion 30 is arranged in 10 or 20 segments on the base 88, and the diameter change (strain) of the filter portion 30 is measured when a predetermined weight is applied with the contactor 86 for a predetermined time. Using the diameter Ds of the filter portion before applying the load (diameter before strain) ( Figure 19 311 in) and the height Dd of the filter portion after applying the load ( Figure 19 312 in), the hardness is represented by the following formula.

[0110] Hardness (%) = (Dd (height after strain)) ÷ (Ds (diameter before strain)) × 100.

[0111] It should be noted that the measurement is carried out in a state where a load of 2 kg is applied for 20 seconds and then the load is applied.

[0112] In the measuring device 8, there are 20 contact points between the contactor 86 and the filter part 30 to be measured. When the length of the filter part 30 to be measured is long (longer than the distance between the two walls 82), as Figure 6 shown in (B), ten filter parts are arranged on the base 88 for measurement. If the filter part 30 to be measured is short, or if a local area of the filter part is to be measured, such as Figure 7 shown, then two sets of ten filter parts (twenty in total) are prepared and arranged to face each other on the base for measurement. In either case, the filter part 30 is arranged such that the local area to be measured is engaged with the contactor 24.

[0113] The measurement using the measuring device 8 has been described above, but as long as there are 20 contact points, the same 2 kg load, and the same 20 - second time, the same hardness evaluation can be carried out without using another measuring device 8.

[0114] In Figure 1 the flavor inhalation article 1 according to the first embodiment shown, preferably, the stress at a predetermined strain at the position of the filter part 30 corresponding to the object 33 ( Figure 5 the region 301 in Figure 5 ) is within a predetermined range, specifically 1.0 N or more and 10 N or less, more preferably 1.5 N or more and 9 N or less at a strain rate of 10%. Within these ranges, it is possible to impart a desired hardness to the desired position of the filter part 30, thereby improving the feeling of holding the flavor inhalation article in the mouth or hand, and further improving the ease of inserting and attaching the flavor inhalation article to the inhalation device when the flavor inhalation article is a heat - not - burn type. In addition, preferably, the stress at a predetermined strain at the position of the filter part 30 not corresponding to the object 33 (

[0115] the region 302 inFigure 20 and Figure 21 Explain the method for measuring the stress at a predetermined strain of the filter section 30. Figure 20 is an explanatory diagram schematically showing the stress at a predetermined strain in the first embodiment. Figure 21 is a diagram schematically showing the relationship between the strain rate and the stress. The "stress at a predetermined strain" is the resistance to deformation, and its principle is the same as the "hardness" measured by the aforementioned measuring device 8.

[0116] In the "stress at a predetermined strain", as Figure 20 shown, when pushing a length equal to 10% of the diameter D of the filter section 30 (i.e., D / 10) in the diameter direction of the filter section 30 (when deforming from Figure 20 311 to 312 in Figure 21 ), the repulsive force acting on the push rod 47A of the rheometer 47 is regarded as the "stress at a predetermined strain" of the filter section 30. As shown by curve B in

[0117]

[0118]

[0119] Figure 8 , the stress at a position of the filter section 30 that does not correspond to the object is a small value and is almost proportional to the strain rate, while as shown by curve A, the stress at a position of the filter section 30 that corresponds to the object is greater than the stress at a position of the filter section 30 that does not correspond to the object, and the growth rate of curve B decreases as the strain rate increases. In this embodiment, the stress value at a strain rate of 10% is regarded as the "stress at a predetermined strain".

[0117] When the axial length of the filter section 30 is short or the circumference is small, it may be difficult to measure with the aforementioned measuring device 8, but the "stress at a predetermined strain" can be easily measured.

[0118] In this embodiment, the measurement of the "stress at a predetermined strain" is performed using a rheometer manufactured by Sun Scientific Co., Ltd., model CR-3000EX-L. The push rod 47A is composed of a stainless steel jig and has a disk-shaped contact portion with a diameter of 15 mm at the end. The moving speed of the push rod 47A of the rheometer 47 is set to 10 mm / min. When measuring the "stress at a predetermined strain" of the filter section 30, the axial length of the filter section 30 is set to 10 mm. If the length of the filter section 30 to be measured is less than 10 mm, a plurality of rods are vertically arranged to adjust the total length to 10 mm for measurement.

[0119] Figure 8FIG. is another example of a longitudinal cross - section of a flavor inhalation article 1 according to the first embodiment, where the object 33 is a solid member, and (A) shows the object 33 having a sharp second side, and (B) shows a longitudinal cross - section of the flavor inhalation article 1 having the object 33 that narrows from the first side to the second side.

[0120] For example, the shape of the end of the object 33 in the center - line direction may be planar on the first side of the object 33 and sharp on the second side of the object 33, as Figure 8 shown in (A). Additionally, as Figure 8 shown in (B), the width of the object 33 in the second - side region may be relatively smaller than the width in the first - side region.

[0121] Herein, specific examples of the arrangement of the object 33 will be described using Figure 1 、 Figure 9 and Figure 10 .

[0122] Figure 9 FIG. is another example of a longitudinal cross - section of a flavor inhalation article 1 according to the first embodiment, where (A) shows the object 33 located on the second side within the filter 31, and (B) shows the object 33 located closer to the center within the filter 31.

[0123] Figure 10 FIG. is another example of a longitudinal cross - section of a flavor inhalation article 1 according to the first embodiment, where (A) shows the object 33 having the same size as the filter 31 in the center - line direction and located within the filter 31, and (B) shows a plurality of objects 33 located within the filter 31.

[0124] Preferably, the object 33 is arranged so as not to protrude from the end face on the second side of the filter 31.

[0125] In the example shown in Figure 1 , a hollow object 33 that is smaller than the filter 31 in the center - line direction is located on the first side (matrix portion 10 side) within the filter 31. Specifically, the object 33 is arranged in the upstream region within the filter 31. By positioning the object 33 on the first side (matrix portion 10 side) within the filter 31, suitable aerosol filtration can be achieved while making the object 33 invisible from the end face on the second side of the filter 31. Additionally, when the object 33 is positioned on the first side (matrix portion 10 side) within the filter 31, the strength of the first side of the filter 31 is enhanced, making it easier to perform the task of attaching the flavor inhalation article 1 to the inhalation device 100, as Figure 2 shown.

[0126] In Figure 9In the example shown in (A), a solid object 33 smaller than the filter 31 in the centerline direction is positioned on the second side (downstream side) within the filter 31. Specifically, the object 33 is arranged in the second side region within the filter 31. By positioning the object 33 in the second side (nozzle end) region within the filter 31, the strength of the region where the nozzle section 50 is held in the user's mouth can be enhanced, thereby improving the feeling of being held in the mouth. Even if it is hollow, if the object 33 can enhance the strength of the second side region, the feeling of being held in the mouth can be improved similarly.

[0127] In Figure 9 In the example shown in (A), the end face on the second side of the object 33 is positioned at the end face on the second side of the filter 31, but this is not a limitation, and the positions of the end faces of the two may not coincide. For example, when the object 33 is positioned on the second side within the filter 31, the end face on the second side of the object 33 may be more than 2 mm away from the end face on the second side of the filter 31. By making the end face on the second side of the object 33 more than 2 mm away from the end face on the second side of the filter 31, the object 33 can be made invisible from the end face on the second side of the filter 31 in the centerline direction of the filter portion 30.

[0128] The arrangement of the object 33 smaller than the filter 31 in the centerline direction is not limited to the region on the first side or the second side within the filter 31.

[0129] In Figure 9 In the example shown in (B), an object 33 smaller than the filter 31 in the centerline direction is positioned closer to the center within the filter 31 in the centerline direction. Specifically, the object 33 is arranged in a region within the filter 31 closer to the center in the centerline direction. By positioning the object 33 in a region within the filter 31 closer to the center, the strength of the region corresponding to the user's teeth when the nozzle section 50 is bitten can be enhanced.

[0130] The object 33 only needs to be arranged so as not to protrude from the end face on the second side of the filter 31, and is not limited to the above configuration.

[0131] As Figure 10 As shown in (A), an object 33 having the same size as the filter 31 in the centerline direction can be arranged within the filter 31.

[0132] In addition, when arranging a plurality of objects 33, the arrangement of the objects 33 is not limited to the same region in the centerline direction as shown in Figure 4 As Figure 10 As shown in (B), a plurality of objects 33 can be arranged in a plurality of regions within the filter 31.

[0133] By increasing the ratio of the object 33 to the filter 31, the strength of the nozzle section 50 can be enhanced while reducing the aerosol filtration rate of the filter section 30.

[0134] [Matrix portion 10]

[0135] The matrix portion 10 includes an aerosol source 11 and a wrapper 12. The aerosol source generates vapor when heated to produce an aerosol, and the wrapper covers the outer circumference of the aerosol source 11. Additionally, the matrix portion 10 may include a tip member 13 that prevents the aerosol source 11 from falling off the end face on the first side of the matrix portion 10. By wrapping the aerosol source 11 and the tip member 13 with the wrapper 12, the matrix portion 10 is formed into a cylindrical shape. The aerosol source 11 can be tobacco-derived, such as a processed product formed from shredded tobacco or tobacco material into particles, sheets, or powders. The aerosol source 11 can also include non-tobacco-derived materials made from plants other than tobacco (e.g., mint or herbs). As an example, the aerosol source 11 can include flavorings. There is no particular limitation on the type of flavorings, but from the perspective of imparting a good flavor, menthol is particularly preferred. These flavorings can be used alone or in combination of two or more. If the inhalation device 100 is a medical inhaler, the aerosol source 11 can include a drug for the patient to inhale. It should be noted that the aerosol source 11 is not limited to solids and can be a liquid, such as polyols (like glycerol and propylene glycol) and water. When the flavor inhalation article 1 is held in the holding portion 140, at least a part of the matrix portion 10 is accommodated in the internal space 141 of the holding portion 140.

[0136] The matrix portion 10 formed by wrapping the aerosol source 11 with the wrapper 12 preferably has a cylindrical shape that satisfies an aspect ratio of 1 or more as defined by Equation 1.

[0137] [Mathematical formula 1]

[0138] Aspect ratio = h / w

[0139] In Equation 1, h ≥ w is preferred, where w is the width of the cross-section of the matrix portion 10 and h is the size of the matrix portion 10 in the centerline direction. There is no limitation on the shape of the cross-section, and it can be a polygon, a rounded polygon, a circle, an ellipse, etc. In the case where the cross-section is a circle, the width w is the diameter; in the case of an ellipse, it is the major axis; and in the case of a polygon or a rounded polygon, it is the diameter of the circumscribed circle or the major axis of the circumscribed ellipse. The cross-sectional width of the aerosol source 11 constituting the matrix portion 10 is preferably 4 mm or more and 9 mm or less.

[0140] The size h of the substrate portion 10 in the center line direction can be appropriately changed according to the size of the product, but is usually 8 mm or more, preferably 10 mm or more. In addition, the size h of the substrate portion 10 in the center line direction is usually 70 mm or less, preferably 30 mm or less.

[0141] In addition, there is no particular limitation on the ratio of the size h of the substrate portion 10 in the center line direction to the size of the flavor inhalation article 1. However, from the standpoint of balancing the delivery amount and the aerosol temperature, it is usually 10% or more, preferably 20% or more, more preferably 25% or more, even more preferably 30% or more. In addition, the ratio of the size h of the substrate portion 10 to the size of the flavor inhalation article 1 is usually 80% or less, preferably 70% or less, more preferably 60% or less, even more preferably 50% or less, particularly preferably 45% or less, and most preferably 40% or less.

[0142] There is no particular limitation on the content of the aerosol source 11 in the substrate portion 10, but it can be 200 mg or more and 800 mg or less, and 250 mg or more and 600 mg or less is preferred. This range is particularly suitable for a substrate portion 10 having a circumference of 22 mm and a size of 20 mm in the center line direction.

[0143] Here, the aerosol source 11 containing shredded tobacco will be described. There is no particular limitation on the material of the shredded tobacco contained in the aerosol source 11, and known materials such as lamina and midrib can be used. In addition, dry tobacco leaves are pulverized to an average particle size of 20 μm or more and 200 μm or less to produce tobacco powder, which is then homogenized, processed into a sheet (hereinafter simply referred to as a homogenized sheet), and shredded. In addition, a so-called strand type can be used, in which a homogenized sheet having a size substantially the same as the size of the substrate portion 10 in the center line direction is shredded horizontally with respect to the center line direction of the substrate portion 10 and filled into the aerosol source 11.

[0144] In addition, the width of the shredded tobacco is preferably 0.5 mm or more and 2.0 mm or less for filling into the aerosol source 11.

[0145] Regarding the tobacco leaves used for producing shredded tobacco and homogenized sheets, various types of tobacco can be used. Examples include yellow varieties, Burley varieties, Oriental varieties, local varieties, other Nicotiana tabacum varieties, Nicotiana rustica varieties, and their mixtures. For mixtures, each variety can be appropriately blended to achieve the desired flavor. Details of the tobacco varieties are disclosed in "Tobacco Encyclopedia, Tobacco Research Center, March 31, 2009". There are several conventional methods for producing homogenized sheets, namely methods for processing tobacco leaves into homogenized sheets. The first method is to use a papermaking process to produce formed sheets. The second method involves mixing a suitable solvent (such as water) with shredded tobacco leaves to homogenize them, then thinly casting the homogenized material onto a metal plate or a metal plate belt and drying it to produce a cast sheet. The third method involves mixing a suitable solvent (such as water) with shredded tobacco leaves to homogenize them, then extruding and molding the homogenized material into sheets to produce wound sheets. Details of the homogenized sheet types are disclosed in "Tobacco Encyclopedia, Tobacco Research Center, March 31, 2009".

[0146] Relative to the total amount of the aerosol source 11, the moisture content of the aerosol source 11 can be 10% or more and 15% or less by mass, preferably 11% or more and 13% or less by mass. Such a moisture content suppresses the occurrence of curl stains and improves the winding suitability during the production process of the substrate portion 10.

[0147] There is no particular limitation on the aerosol source 11, and it can include extracts and / or their components from various natural substances, depending on the application. Examples of the extracts and / or their components include glycerin, propylene glycol, triacetin, 1,3 - butanediol, and their mixtures.

[0148] There is no particular limitation on the content of the extracts and / or their components in the aerosol source 11, but from the perspective of generating sufficient aerosol and imparting a good flavor, relative to the total amount of the aerosol source 11, the content is generally 5% or more by mass, preferably 10% or more by mass. Additionally, the content of the extracts and / or their components in the aerosol source 11 is generally 50% or less by mass, preferably 15% or more and 25% or less by mass.

[0149] The aerosol source 11 may include a flavoring agent. There is no particular limitation on the type of the flavoring agent, but menthol is particularly preferred from the viewpoint of imparting a good flavor. These flavoring agents may be used alone or in combination of two or more.

[0150] There is no particular limitation on the packing density of the aerosol source 11, but from the viewpoints of ensuring the performance of the flavor inhalation article 1 and imparting a good flavor, it is generally 250 mg / cm³ or more, preferably 300 mg / cm³ or more. The packing density of the aerosol source 11 is generally 400 mg / cm³ or less, preferably 350 mg / cm³ or less.

[0151] In addition, the aerosol source 11 may be composed of tobacco sheets. There may be one tobacco sheet, or two or more tobacco sheets.

[0152] An example of an aspect in the case where the aerosol source 11 is composed of a single tobacco sheet is the following aspect: A tobacco sheet having a size on one side that is substantially the same as the size of the object to be filled in the center line direction is filled in a state of being folded back multiple times horizontally in the center line direction of the object to be filled (so-called gathered sheet). Another example is the following aspect: A tobacco sheet having a size on one side that is substantially the same as the size of the object to be filled in the center line direction is filled in a state of being wrapped in a direction orthogonal to the center line direction of the object to be filled.

[0153] An example of an aspect in the case where the aerosol source 11 is composed of two or more tobacco sheets is the following aspect: A plurality of tobacco sheets having a size on one side that is substantially the same as the size of the object to be filled in the center line direction are filled in a state of being wrapped in a direction orthogonal to the center line direction of the object to be filled so as to be concentrically arranged. "Concentrically arranged" means that the centers of all the tobacco sheets are arranged at substantially the same position.

[0154] "Concentrically arranged" means that the centers of all the tobacco sheets are arranged at substantially the same position. There is no particular limitation on the number of tobacco sheets, but examples include two, three, four, five, six, or seven sheets.

[0155] All two or more tobacco sheets may have the same composition or physical properties, or some or all of the tobacco sheets may have different compositions or physical properties. In addition, the thickness of each tobacco sheet may be the same or different.

[0156] There is no limitation on the thickness of each tobacco sheet, but from the viewpoint of balancing heat transfer efficiency and strength, it is preferably 150 μm or more and 1000 μm or less, more preferably 200 μm or more and 600 μm or less.

[0157] The aerosol source 11 can be manufactured in the following manner: preparing a plurality of tobacco sheets having different widths, preparing a stack of laminates such that the width decreases from the first side to the second side, and winding it through a winding tube.

[0158] According to this manufacturing method, the plurality of tobacco sheets extend in the center line direction and are arranged concentrically around the CL.

[0159] In this manufacturing method, preferably, a laminate is prepared such that a non-contact portion is formed between adjacent tobacco sheets after winding. If there is a non-contact portion (gap) where the tobacco sheets do not contact each other between the plurality of tobacco sheets, the flavor flow path can be fixed and the delivery efficiency of flavor components can be improved. On the other hand, since the heat from the heating unit 121 can be transferred to the outer tobacco sheet through the contact portions of the plurality of tobacco sheets, a relatively high heat transfer efficiency can be ensured.

[0160] In order to create a non-contact portion between the plurality of tobacco sheets where the tobacco sheets do not contact each other, examples include methods of preparing a laminate by, for example: using embossed tobacco sheets, laminating without completely adhering adjacent tobacco sheets, partially adhering adjacent tobacco sheets, or gently adhering all or part of adjacent tobacco sheets such that the adjacent tobacco sheets peel off after winding.

[0161] When preparing the matrix portion 10 including the wrapper 12, the wrapper 12 can be placed on the end face of the first side of the laminate.

[0162] Polyhydric alcohols (such as glycerin, propylene glycol, and 1,3 - butanediol) can be added to the tobacco sheets. The amount added to the tobacco sheets is preferably 5% or more and 50% or less by mass, and more preferably 15% or more and 25% or less by mass, relative to the dry mass of the tobacco sheets.

[0163] The tobacco sheets can be appropriately manufactured by known methods (such as papermaking, slurrying, and rolling). The above-mentioned homogenized sheets can also be used.

[0164] In the case of papermaking, the homogenized sheets can be manufactured by a method including the following steps. 1) Coarsely crush the dried tobacco leaves, extract with water, and separate into a water extract and a residue. 2) Concentrate the water extract by vacuum drying. 3) Add pulp to the residue, fibrillate with a refiner, and make paper. 4) Add the concentrated water extract to the paper sheet and dry to form tobacco sheets. In this case, a step of removing some components such as nitrosamines can also be added (see JP 2004 - 510422 A).

[0165] In the case of the grouting method, the homogenized sheet can be manufactured by a method including the following steps. 1) Mix water, pulp, and an adhesive with crushed tobacco leaves. 2) Spread (cast) the mixture thinly and dry it. In this case, the following step can be added: removing some components (such as nitrosamines) by irradiating the slurry mixed with water, pulp, and the binder with ultraviolet rays or X-rays.

[0166] In addition to the above, as disclosed in WO 2014 / 104078 A1, a non-woven tobacco sheet manufactured by a method including the following steps can also be used. 1) Mix granular tobacco leaves with an adhesive. 2) Insert the mixture between non-woven fabrics. 3) Form the laminate into a fixed shape by thermal welding to obtain a non-woven tobacco sheet.

[0167] The type of tobacco leaves used as raw materials in each of the above methods can be the same as the type described for the aerosol source 11 containing shredded tobacco.

[0168] There is no particular limitation on the composition of the tobacco sheet, but for example, relative to the total mass of the tobacco sheet, the content of tobacco material (tobacco leaves) is preferably 50% or more and 95% or less by mass. The tobacco sheet can also include a binder, such as guar gum, xanthan gum, carboxymethyl cellulose, or sodium salt of carboxymethyl cellulose. Relative to the total mass of the tobacco sheet, the amount of the binder is preferably 1% or more and 10% or less by mass. The tobacco sheet can further contain other additives. Examples of the additives include fillers, such as pulp.

[0169] There is no particular limitation on the composition of the wrapper 12 for the substrate portion 10, and it can be a common aspect, such as an aspect with pulp as the main component. In addition to being made of wood pulp (such as softwood pulp or hardwood pulp), the pulp can also be obtained by mixing non-wood pulp (such as flax pulp, hemp pulp, sisal pulp, or esparto pulp) commonly used for the wrapper 12 of tobacco products.

[0170] The types of pulp include chemical pulp produced by kraft pulping, acid / neutral / alkaline sulfite pulping, soda pulping, etc., as well as groundwood pulp, chemigroundwood pulp, and thermomechanical pulp, etc.

[0171] The wrapping paper 12 is made using pulp, which is adjusted and homogenized by using a fourdrinier paper machine, a cylinder paper machine, or a cylinder mold paper machine during the papermaking process. It should be noted that, if necessary, a wet strength agent can be added to make the wrapping paper 12 water-resistant, or a sizing agent can be added to adjust the printability of the wrapping paper 12. In addition, internal papermaking additives such as sulfuric acid belts, various anionic, cationic, non-ionic, or amphoteric yield improvers, drainage improvers, and paper strength enhancers can be added; as well as papermaking additives such as dyes, pH regulators, defoamers, resin control agents, and dirt adhesion inhibitors, etc.

[0172] The basis weight of the base paper for the wrapping paper 12 is typically 20 gsm or more, preferably 25 gsm or more. On the other hand, the basis weight is typically 65 gsm or less, preferably 50 gsm or less, more preferably 45 gsm or less.

[0173] There is no particular limitation on the thickness of the wrapping paper 12. From the viewpoints of rigidity, air permeability, and ease of adjustment during papermaking, its thickness is typically 10 μm or more, preferably 20 μm or more, more preferably 30 μm or more. In addition, the thickness of the wrapping paper 12 is typically 100 μm or less, preferably 75 μm or less, more preferably 50 μm or less.

[0174] The shape of the wrapping paper 12 used to manufacture the substrate portion 10 can be square or rectangular.

[0175] When the wrapping paper 12 is used as the wrapping paper for the aerosol source 11, one side length can be 8 mm or more and 70 mm or less, and the other side length can be 15 mm or more and 28 mm or less, preferably the length is 22 mm or more and 24 mm or less, more preferably the length is about 23 mm. When, for example, the aerosol source 11 is cylindrically wrapped with the wrapping paper 12 in the circumferential direction, the ends of the wrapping paper 12 can be overlapped by about 2 mm and glued to form a cylindrical paper tube shape, with the aerosol source 11 filled inside. The size of the rectangular wrapping paper 12 can be determined by the size of the substrate portion 10.

[0176] In addition to the above-mentioned pulp, the wrapping paper 12 can include a filler. The content of the filler, relative to the total mass of the wrapping paper 12, 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.

[0177] In the wrapping paper 12, within the preferred basis weight range (25 gsm or more and 45 gsm or less), it is preferred that the content of the filler is 15% by mass or more and 45% by mass or less.

[0178] In addition, when the basis weight is 25 gsm or more and 35 gsm or less, the filler content is preferably 15% or more and 45% or less by mass, and when the basis weight is 35 gsm or more and 45 gsm or less, the filler content is preferably 25% or more and 45% or less by mass.

[0179] Calcium carbonate, titanium dioxide, kaolin, or the like can be used as the filling material, but calcium carbonate is preferably used from the viewpoints of improving flavor, whiteness, and the like.

[0180] Various additives other than the base paper and the filler can be added to the wrapper paper 12; for example, a water resistance enhancer can be added to improve water resistance. The water resistance enhancer includes a wet strength agent (WS agent) and a sizing agent. Examples of the wet strength agent include urea-formaldehyde resin, melamine-formaldehyde resin, and polyamide epichlorohydrin (PAE). Examples of the sizing agent include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohol having a saponification degree of 90% or more.

[0181] As an additive, a paper strength enhancer such as polyacrylamide, cationic starch, oxidized starch, CMC, polyamide epichlorohydrin resin, polyvinyl alcohol, or the like can be added. In particular, it is known that the use of a very small amount of oxidized starch can improve air permeability (see JP 2017-218699 A).

[0182] The wrapper paper 12 may have a coating agent added to at least one of its two surfaces (front and back). There is no particular limitation on the coating agent, but a coating agent that can form a film on the paper surface and reduce liquid permeability is preferred. Examples include polysaccharides (such as alginic acid and its salts (e.g., sodium salt), pectin), cellulose derivatives (such as ethyl cellulose, methyl cellulose, carboxymethyl cellulose, nitrocellulose), starches and their derivatives (e.g., ether derivatives such as carboxymethyl starch, hydroxyalkyl starch, and cationic starch), ester derivatives (such as starch acetate, starch phosphate, and octenyl succinic anhydride starch), and the like.

[0183] [Cooling section 20]

[0184] The cooling section 20 is positioned adjacent to the matrix section 10 and the filter section 30, and is formed into a hollow (cavity) cross-section, such as a cylinder, by winding the sheet 21. The cooling section 20 cools the vapor generated by heating the matrix section 10 to generate an aerosol.

[0185] Specifically, the cooling part 20 is a paper tube formed by winding a sheet 21 made of paper. The cooling part 20 is a so-called spiral paper tube, which is a paper tube formed by laminating a plurality of sheets 21 (at least including paper) and spirally winding the sheets 21. In the manufacturing method of the spiral paper tube, a paper tube with a circular cross-section can be easily formed. By adopting the spiral paper tube for the cooling part 20, the area of the cooling part 20 can be reduced while the strength of the cooling part 20 is improved. In addition, by combining and laminating a sheet member 31a containing a flavor component, a fragrance component, tobacco powder, etc. with the paper, a new flavor can be imparted to the aerosol.

[0186] Alternatively, the cooling part 20 can be a so-called straight paper tube, which is a paper tube formed by winding paper into a cylindrical shape multiple times. In the manufacturing method of the straight paper tube, the amount of glue used for adhering the paper can be reduced compared to the manufacturing method of the spiral paper tube.

[0187] In addition, the cooling part 20 can be a paper tube formed by laminating a plurality of sheets 21 (at least including paper). By laminating a plurality of sheets 21, the strength of the cooling part 20 can be maintained even when the basis weight of each sheet 21 is small.

[0188] The cross-section of the cooling part 20 is substantially circular, and the circumference can be appropriately changed according to the size of the product, but it is preferably approximately the same as the circumference of the filter 31 described later. It should be noted that if the cross-section is not circular, the above-mentioned circumference is applied by using a circle having the same area as the cross-section, and the circumference of the circle is used.

[0189] The size of the cooling part 20 in the center line direction can be appropriately changed according to the size of the product, but it is typically 5 mm or more, preferably 10 mm or more, and more preferably 15 mm or more. In addition, the size of the cooling part 20 in the center line direction is typically 35 mm or less, preferably 30 mm or less, and more preferably 25 mm or less. By setting the size of the cooling part 20 in the center line direction to be above the aforementioned lower limit, a sufficient cooling effect can be ensured to obtain a good flavor, and by setting the size to be below the aforementioned upper limit, losses caused by the adhesion of vapor and aerosol glue to the sheet 21 can be suppressed.

[0190] For example, the cooling part 20 is a paper tube formed by winding a sheet 21 made of paper.

[0191] Specifically, the cooling part 20 is a so-called spiral paper tube, which is formed by laminating multiple sheets 21 (at least including paper) and spirally winding them. In the manufacturing method of the spiral paper tube, a paper tube with a circular cross-section can be easily formed. By adopting the spiral paper tube for the cooling part 20, the area of the cooling part 20 can be reduced while the strength of the cooling part 20 is improved. In addition, by combining and laminating a sheet member containing a flavor component, a flavor component, tobacco powder, etc. with paper, a new flavor can be imparted to the aerosol.

[0192] Alternatively, the cooling part 20 can be a so-called straight paper tube, which is formed by winding paper into a cylindrical shape multiple times. In the manufacturing method of the straight paper tube, the amount of glue used for adhering the paper can be reduced compared to the manufacturing method of the spiral paper tube.

[0193] In addition, the cooling part 20 can be a paper tube formed by laminating multiple sheets 21 (at least including paper). By laminating multiple sheets 21, the strength of the cooling part 20 can be maintained even when the basis weight of each sheet 21 is small.

[0194] There is no particular limitation on the thickness of the sheet 21, which can be, for example, 50 μm or more and 500 μm or less, and can also be 100 μm or more and 250 μm or less. It should be noted that there is no particular limitation on the material of the sheet 21, which can be mainly composed of pulp, for example, and can also be mainly composed of polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polylactic acid, cellulose acetate, or aluminum foil, or any combination thereof.

[0195] The cooling part 20 is a part formed by winding the sheet 21, but it is an example of a tubular member formed into a cylindrical shape, and is not limited to this configuration as long as the cross-section is hollow. The cooling part 20 can be formed by a synthetic resin tube or the like that already has a hollow cross-section.

[0196] The cooling part 20 has a plurality of through-holes 60 arranged circumferentially and concentrically, and these through-holes are also called "ventilation filters (Vf)" in the technical field. The through-holes 60 are holes penetrating the sheet 21. Examples of the shape of the holes include polygons, rounded polygons, circles, ellipses, etc. The through-holes 60 are located in the area where air can flow in from the outside of the flavor inhalation article 1, in other words, in the area protruding from the opening 142 when the flavor inhalation article 1 is held in the holding part 140 of the inhalation device 100.

[0197] The presence of the through holes 60 allows adjustment of the concentration of the inhaled flavor components and aerosol. In addition, the presence of multiple through holes 60 allows air to flow into the interior of the cooling portion 20 from the outside during inhalation, thereby reducing the temperature of the vapor and air flowing in from the substrate portion 10. Furthermore, by positioning the through holes 60 in the cooling portion 20 in a region that is more than 4 mm away from the boundary between the cooling portion 20 and the filter portion 30 in the direction of the cooling portion 20, not only can the cooling capacity be improved, but also the retention of substances (products) generated by heating in the cooling portion 20 can be suppressed, thereby increasing the throughput of the product.

[0198] It should be noted that by using the aerosol as a condensation nucleus, the vapor generated by heating the substrate portion 10 can be liquefied by contacting the air from the outside and reducing the temperature, thereby promoting the generation of the aerosol.

[0199] When multiple through holes 60 on the concentric circles in the cooling portion 20 are regarded as a set of through holes, there may be one set of through holes, or there may be two or more sets of through holes. When there are two or more sets of through holes, from the perspective of increasing the throughput of the components generated by heating, it is preferable not to provide one set of through holes in a region less than 4 mm away from the boundary between the cooling portion 20 and the filter portion 30 in the direction of the cooling portion 20.

[0200] In addition, when the flavor inhalation article 1 is in the form of the substrate portion 10, the cooling portion 20, and the filter portion 30 wrapped by the tipping paper 40, it is preferable that the tipping paper 40 has ventilation holes positioned directly above the through holes 60 provided in the cooling portion 20. When manufacturing such a flavor inhalation article 1, a tipping paper 40 having ventilation holes overlapping the through holes 60 can be prepared and wrapped, but from the perspective of ease of manufacturing, it is preferable to first manufacture the flavor inhalation article 1 without the through holes 60, and then create holes that penetrate both the cooling portion 20 and the tipping paper 40 simultaneously.

[0201] There is no particular limitation on the region where the through holes 60 are present, as long as, from the perspective of improving the transport efficiency of the products generated by heating, the region is more than 4 mm away from the boundary between the cooling portion 20 and the filter portion 30 in the direction of the cooling portion 20; however, from the perspective of further improving the product transport efficiency, it is preferably 4.5 mm or more, more preferably 5 mm or more, and even more preferably 5.5 mm or more. In addition, from the perspective of ensuring the cooling function, it is preferable that the region where the through holes 60 are present is less than 15 mm away from the boundary between the cooling portion 20 and the filter portion 30, more preferably less than 10 mm away, and even more preferably less than 7 mm away.

[0202] Taking the boundary between the cooling portion 20 and the substrate portion 10 as a reference, when the size of the cooling portion 20 in the center line direction is 20 mm or more, from the standpoint of ensuring the cooling function, preferably, the region where the through holes 60 are present is at a distance of 5 mm or more, more preferably 10 mm or more, and even more preferably 13 mm or more from the boundary between the cooling portion 20 and the substrate portion 10 in the direction of the cooling portion 20. Further, from the perspective of improving the conveying efficiency of the product generated by heating, preferably, the region where the through holes 60 are present is at a distance of 16 mm or less, more preferably 15.5 mm or less, even more preferably 15 mm or less, and particularly preferably 14.5 mm or less from the boundary between the cooling portion 20 and the substrate portion 10.

[0203] The through holes 60 are arranged such that when inhaled by an automatic smoking machine at 17.5 ml / sec, the air inflow ratio from the through holes 60 is 10% or more and 90% or less by volume. This "air inflow ratio" is the volume ratio of the air flowing in from the through holes 60 when the ratio of the air inhaled from the mouthpiece end is 100% by volume. The air inflow ratio is preferably 50% or more and 80% or less by volume, more preferably 55% or more and 75% or less by volume. These air inflow ratios can be achieved, for example, by selecting the number of each group of through holes 60 in the through holes from the range of 5 or more and 50 or less, selecting the diameter of the through holes 60 from the range of 0.1 mm or more and 0.5 mm or less, and combining these selections.

[0204] The air inflow ratio can be measured using a wrapper mass measuring device (SODIMAX D74 / SODIM manufactured by S.A.S) in accordance with ISO 9512.

[0205] [Filter plug wrap 40]

[0206] The filter plug wrap 40 is wrapped around the outer circumferential surfaces of the substrate portion 10, the cooling portion 20, and the filter portion 30.

[0207] There is no particular limitation on the shape of the filter plug wrap 40, and it can be, for example, square or rectangular.

[0208] There is no particular limitation on the basis weight of the filter plug wrap 40, which is typically 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.

[0209] The air permeability of the butt wrapping paper 40 is not particularly limited, but is typically between 0 Coresta units and 30,000 Coresta units, preferably between 0 Coresta units and 10,000 Coresta units. "Air permeability" is a value measured in accordance with ISO 2965:2009 and is expressed as the flow rate (cm³) of gas passing through an area of 1 cm² per minute when the pressure difference across the paper is 1 kPa. One Coresta unit (1 CU) is cm³ / (min·cm²) at 1 kPa.

[0210] The composition of the butt wrapping paper 40 is not particularly limited, and may be a common aspect, such as one containing pulp as a main component. In addition to being made from wood pulp (such as softwood pulp or hardwood pulp), the pulp may also be obtained by mixing non-wood pulp commonly used for tobacco product wrapping paper (such as flax pulp, hemp pulp, sisal pulp, or Spanish straw pulp). A single type of pulp may be used, or multiple types of pulp may be combined and used in any proportion.

[0211] Types of pulp include chemical pulp produced by kraft pulping, acid / neutral / alkaline sulfite pulping, soda pulping, etc., as well as groundwood pulp, chemical groundwood pulp, and thermomechanical pulp, etc. It should be noted that the tipping paper 40 may be manufactured by the aforementioned manufacturing method or may be a commercially available product.

[0212] In addition to the aforementioned materials, 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, from the perspectives of improving whiteness, opacity, and increasing heating rate, it is preferred that the tipping paper 40 contain calcium carbonate. Furthermore, these fillers may be used alone or in combination of two or more.

[0213] In addition to the aforementioned materials and fillers, the tipping paper 40 may also include various additives, such as water-resistance enhancers, to improve water resistance. Water-resistance enhancers include wet strength agents (WS agents) and sizing agents. Examples of wet strength agents include urea-formaldehyde resin, melamine-formaldehyde resin, and polyamide epichlorohydrin (PAE). 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 greater.

[0214] The tipping paper 40 may have a coating agent added to at least one of its two surfaces (front and back). 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.

[0215] A portion of the outer surface of the tipping paper 40 may be coated with a lip release material. The lip release material is a material designed to facilitate easy separation of the lips from the tipping paper 40 with substantially no adhesion when the user holds the filter portion 30 of the flavor inhalation article 1 in the mouth. 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 a lip release material by applying an ethyl cellulose-based or methyl cellulose-based ink.

[0216] As described above, the flavor inhalation article 1 at least includes a matrix portion 10 containing an aerosol source 11, a cooling portion 20 that cools the vapor generated by heating the matrix portion 10 to generate an aerosol, a filter portion 30 through which the aerosol passes, and a tipping paper 40 wrapped around the outer circumferential surfaces of the matrix portion 10, the cooling portion 20, and the filter portion 30. The filter portion 30 has a filter 31 that is a paper filter filled with a sheet member 31a and an object 33 disposed in the filter 31, where the object 33 is harder than the position of the paper filter (filter 31) where the object 33 is not disposed. The paper filter is softer than a filter using fibers (such as cellulose acetate), and using the paper filter makes the filter portion 30 softer than usual. To solve this problem, using an object 33 that is harder than the position of the paper filter (filter 31) where the object 33 is not disposed can impart the desired hardness to the filter portion 30. Thus, when the flavor inhalation article 1 is a heat-not-burn type, the feel of holding the filter portion 30 in the mouth or hand and the ease of attaching the flavor inhalation article 1 to the inhalation device 100 can be improved by making the filter portion 30 slightly harder. It should be noted that from the perspective of compactness in the centerline direction, the flavor inhalation article 1 may not include the cooling portion 20.

[0217] <Second Embodiment>

[0218] Figure 11 FIG. is a longitudinal sectional view showing a flavor inhalation article 2 according to the second embodiment, where (A) shows the object 33 positioned on the first side within the filter 31, and (B) shows the object 33 positioned on the second side within the filter 31.

[0219] The flavor inhalation article 2 according to the second embodiment is different from the flavor inhalation article 1 according to the first embodiment in that the filter portion 230 corresponding to the filter portion 30 is different. The differences from the first embodiment will be described below. The same reference numerals are used for the same elements in the first and second embodiments, and their detailed descriptions are omitted.

[0220] The filter section 230 includes a filter 31 that is a paper filter, a separate filter 32 that is a separate filter independent of the filter 31, an object 33 that is harder than the position of the filter 31 where no object is provided, and a wrapper paper 35 that is present between the filter 31 and the tipping paper 40 and wraps around the outer circumferential surface of the filter 31. The filter section 230 is connected (coupled) to the cooling section 20 by integrally wrapping the filter section 230 and the cooling section 20 using the tipping paper 40. Preferably, the filter 31 and the separate filter 32 are each wrapped by a separate wrapper paper 35 and then further wrapped together by another wrapper paper 35.

[0221] The cross-section of the separate filter 32 in the filter section 230 is substantially circular, and its circumference can be appropriately changed according to the size of the product, examples of which include more than 22 mm and less than 27 mm. It should be noted that if the cross-section is not circular, the above-mentioned circumference is applied by adopting a circle having the same area as the cross-section, and the circumference of the circle is used.

[0222] The air resistance and size of the filter section 230 in the centerline direction can be exemplified as being the same as those of the filter section 30 in the centerline direction. The shapes and sizes of the filter 31 and the separate filter 32 can be appropriately adjusted to fall within the above ranges.

[0223] The separate filter 32 includes a filter material and is not particularly limited as long as it has the general functions of a filter. The general functions of a filter include, for example, regulating the amount of air mixed during aerosol inhalation, reducing flavor, and reducing nicotine and tar, but it does not necessarily have all of these functions. Additionally, compared with paper-wrapped tobacco products, the heat-not-burn type flavor inhalation article 2 tends to have fewer generated components and a lower aerosol source 11 filling rate. In these heat-not-burn type flavor inhalation articles, it is also an important function to inhibit the filtering function while preventing the aerosol source 11 from detaching. It should be noted that the separate filter 32 can have a lower filtration rate and a higher hardness than the filter 31.

[0224] The filter material constituting the separate filter 32 is formed, for example, into a cylindrical shape having a filler (such as cellulose acetate fiber, non-woven fabric, or pulp paper). A paper filter filled with sheet pulp paper can also be used. In addition to these fillers, activated carbon, sepiolite, palygorskite, zeolite, activated carbon fiber, activated alumina, sepiolite mixed paper, silica gel, activated clay, vermiculite, diatomaceous earth, etc., as well as polymer porous bodies (such as pulp, various fibers, and ion exchange resins) can be used.

[0225] There is no particular limitation on the packing density of the filter material that constitutes the separate filter 32, which is typically 90 mg / cm³ or more and 360 mg / cm³ or less, preferably 150 mg / cm³ or more and 240 mg / cm³ or less.

[0226] In Figure 11 In the example shown in (A), the filter section 230 includes a separate filter 32 connected to the second side of the cooling section 20 and a filter 31 positioned on the second side of the separate filter 32. In other words, in the filter section 230, the separate filter 32 is positioned on the upstream side, and the filter 31 is positioned on the downstream side. A solid object 33 smaller in size than the filter 31 in the centerline direction is positioned on the first side (substrate section 10 side) within the filter 31. Specifically, the object 33 is positioned in the upstream region within the filter 31.

[0227] As Figure 11 As shown in (B), a solid object 33 smaller in size than the filter 31 in the centerline direction can be positioned on the second side (downstream side) within the filter 31. Specifically, the object 33 can be positioned in the region on the second side within the filter 31. When the object 33 is positioned on the second side within the filter 31, it is preferable that the end face on the second side of the object 33 is 2 mm or more away from the end face on the second side of the filter 31.

[0228] The configuration of the filter section 230 is not limited to Figure 11 the examples shown in (A) and (B), and the positional relationship between the filter 31 and the separate filter 32 can be changed. Additionally, the object 33 can be a hollow member.

[0229] Figure 12 FIG. is a diagram showing another example of the longitudinal section of the flavor inhalation article 2 according to the second embodiment, where (A) shows the object 33 positioned on the first side within the filter 31, and (B) shows the object 33 positioned on the second side within the filter 31.

[0230] The filter section 230 can include a filter 31 connected to the second side of the cooling section 20 and a separate filter 32 positioned on the second side of the filter 31. In other words, in the filter section 230, the filter 31 can be positioned on the upstream side, and the separate filter 32 can be positioned on the downstream side.

[0231] A solid object 33 smaller in size than the filter 31 in the centerline direction can be positioned on the first side (substrate section 10 side) within the filter 31, as Figure 12 shown in (A), or can be positioned on the second side (downstream side) within the filter 31, as Figure 12As shown in (B). Specifically, the object 33 can be positioned in the area on the second side within the filter 31. Additionally, the object 33 can be a hollow member.

[0232] As described above, the filter portion 230 of the flavor inhalation article 2 according to the second embodiment includes the filter 31 as a paper filter, the separate filter 32 as a separate filter separate from the filter 31, and the object 33 that is harder than the position of the filter 31 where the object 33 is not provided. The presence of the separate filter 32 in addition to the filter 31 allows for diversification of the filtering function of the filter portion 230. The presence of the object 33 that is softer than the separate filter 32 in the filter 31 can enhance the strength of the area held in the mouth by the user. Additionally, when the flavor inhalation article 1 is a heat-not-burn type, it can improve the feel of holding in the hand and the ease of attaching the flavor inhalation article 1 to the inhalation device 100.

[0233] It should be noted that in the above example, the filter portion 230 has a dual structure that has the separate filter 32 in addition to the filter 31 as a paper filter, but is not limited thereto. In addition to the filter 31 as a paper filter, the filter portion 230 can also have two or more filters.

[0234] <Third Embodiment>

[0235] Figure 13 FIG. is a longitudinal cross-sectional view of a flavor inhalation article 3 according to the third embodiment, where (A) shows the object 33 positioned on the first side of the aerosol modifier 34, and (B) shows the object 33 positioned on the second side of the aerosol modifier 34.

[0236] The flavor inhalation article 3 according to the third embodiment is different from the flavor inhalation article 1 according to the first embodiment in that the filter portion 330 corresponding to the filter portion 30 is different. The differences from the first embodiment will be described below. The same reference numerals are used for the same elements in the first and third embodiments, and their detailed descriptions are omitted.

[0237] The filter portion 330 includes the filter 31 as a paper filter, the solid object 33 having a lower filtration rate than the filter 31, the aerosol modifier 34 for modifying the aerosol, and the wrapper paper 35 that is present between the filter 31 and the tipping paper 40 and wraps around the outer circumferential surface of the filter 31. The filter portion 330 is connected (coupled) to the cooling portion 20 by integrally wrapping the cooling portion 20 and the filter portion 330 with the tipping paper 40. It should be noted that the wrapper paper 35 may not be included.

[0238] The aerosol modifier 34 is positioned inside the filter part 330. If the aerosol modifier 34 is harder than the position of the filter 31 where the aerosol modifier 34 is not provided, the aerosol modifier becomes a second object and can improve the feel and usability of holding the filter part 330.

[0239] There is no particular limitation on the position of the aerosol modifier 34 in the longitudinal section of the filter part 330, but the aerosol modifier is preferably arranged in a straight line with the object 33 in the center line direction. In other words, the aerosol modifier 34 is preferably arranged in a straight line with the object 33 in the longitudinal direction of the filter part 330.

[0240] Specifically, the aerosol modifier 34 is preferably positioned at a position corresponding to the object 33, such as the position where the aerosol passing through the object 33 passes, or the position where the aerosol hitting the aerosol modifier 34 passes through the object 33. By positioning the aerosol modifier 34 at a position corresponding to the object 33, the delivery efficiency of the modified aerosol can be improved. In addition, the placement of the aerosol modifier 34 can enhance the strength of the filter part 330, thereby improving the feel and usability of holding.

[0241] In Figure 13 In the example shown in (A), the filter part 330 has an aerosol modifier 34, which is positioned on the second side (downstream side) with respect to the object 33 and is arranged in a straight line with the object 33 in the center line direction. By positioning the aerosol modifier 34 on the second side (mouthpiece end side) with respect to the object 33 and arranging it in a straight line in the longitudinal direction of the filter part 330, the aerosol that has passed through the object 33 can be efficiently contacted with the aerosol modifier 34 during inhalation. In addition, by efficiently contacting the aerosol with the aerosol modifier 34, the modification effect of the aerosol can be improved.

[0242] In addition, as Figure 13 shown in (B), the filter part 330 can have an aerosol modifier 34, which is positioned on the first side (upstream side) with respect to the object 33 and is arranged in a straight line with the object 33 in the center line direction. By positioning the aerosol modifier 34 on the first side (matrix part 10 side) with respect to the object 33 and arranging it in a straight line in the longitudinal direction of the filter part 330, the modified aerosol can pass through the object 33 during inhalation. In addition, by positioning the aerosol modifier 34 in the first side (upstream region) of the filter part 330, the aerosol can contact the aerosol modifier 34 before being fully filtered, thereby improving the modification effect of the aerosol.

[0243] The aerosol modifier 34 is, for example, a frangible capsule that releases the content containing the fragrance component when an external force is applied.

[0244] The aerosol modifier 34 is preferably embedded at a position where the content will not leak from the end faces on the first side and the second side of the filter 31. In other words, the aerosol modifier 34 is preferably positioned at a location where the diffusion of the content is controlled within the filter portion 330.

[0245] The aerosol modifier 34 includes a content containing at least one of a flavor component and a fragrance component, and a capsule body that houses these contents. The aerosol modifier 34 is crushed by the user, causing the capsule body to rupture and release the internal content. Crushing involves, for example, pressing the wrapper 35 and the tipping paper 40 with the thumb and index finger to apply pressure to the aerosol modifier 34, which is a fragile capsule.

[0246] Examples of flavor components 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, lecithin, etc. The flavor component is preferably a liquid or substantially soluble in the mouth.

[0247] There is no particular limitation on the fragrance component, and it may include, for example, powdered fragrances and oil-based fragrances. Main powdered fragrances include chamomile, fenugreek, menthol, mint, cinnamon, herbs, etc. in powdered form. Main oil-based fragrances include lavender, cinnamon, cardamom, celery, clove, West Indian logwood, nutmeg, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon, orange, mint, cassia, ylang-ylang, sage, spearmint, fennel, paprika, ginger, anise, coriander, coffee, tobacco, etc. The fragrance component can be used alone or in combination of two or more. When using a powdered fragrance, the particle size is preferably 500 μm or less. The fragrance component is preferably a liquid or substantially soluble in the mouth.

[0248] In addition to at least one of the flavor component and the fragrance component, the content may further include a coloring agent, such as a synthetic coloring agent and a natural coloring agent. Preferred coloring agents include food additives, such as Red No. 3, Red No. 106, β-carotene, copper chlorophyll, gardenia blue pigment, tartrazine, etc.

[0249] The content may further include a solvent that dissolves the flavor component, the fragrance component, and the coloring agent. Examples of the solvent include medium-chain triglycerides, glycerin, propylene glycol, water, ethanol, etc.

[0250] When in a liquid or gel state, the content permeates through the filter 31 and the wrapper 35. Therefore, the viscosity is preferably 20 mPa·s or more, and 30 mPa·s or more. Additionally, the viscosity of the content is preferably 120 mPa·s or less, and 90 mPa·s or less. The viscosity of the content being above the aforementioned lower limit allows the content to diffuse within the flavor inhalation article 3, thereby imparting a new flavor to the aerosol. Additionally, the viscosity of the content being below the aforementioned upper limit prevents the content from permeating through the filter 31 and the wrapper 35 too quickly, which would result in the content leaking out to the outside of the flavor inhalation article 3 during use.

[0251] Furthermore, if the liquid amount of the content per unit cross-sectional area of the filter 31 is less than 0.2 μl / mm², there is a risk of insufficient penetration into the filter 31. On the other hand, if the liquid amount of the content per unit cross-sectional area of the filter 31 is greater than 2.2 μl / mm², there is a risk of the content reaching the end face on the second side of the flavor inhalation article 3 and adhering to the user. Therefore, the liquid amount of the content per unit cross-sectional area of the filter 31 is preferably 0.2 μl / mm² or more and 2.2 μl / mm² or less, more preferably 0.3 μl / mm² or more and 0.7 μl / mm² or less.

[0252] Examples of the material of the capsule body include starch, dextrin, polysaccharide, agar, gellan gum, gelatin, polyvinyl chloride, polyvinylidene chloride, polystyrene, styrene-acrylonitrile copolymer, styrene-butadiene-acrylonitrile copolymer, polyethylene, polypropylene, cellulose acetate, polyethylene terephthalate, polyamide, ethylene-acrylic plastic, ethylene-vinyl acetate plastic, ethylene-vinyl alcohol plastic, various natural gelling agents, etc. In addition to the above materials, the capsule body may also include a flavor component, a plasticizer, a colorant, etc.

[0253] When the aerosol modifier 34 is a frangible capsule, there is no particular limitation on its shape, and it can be spherical, cylindrical, frustoconical, etc. Examples of the frangible capsule include a spherical shape with a diameter of 2.5 mm or more and 4.0 mm or less, and a cylindrical shape with a size in the centerline direction of 5 mm or more and 10 mm or less and a diameter of 5 mm or more and 7 mm or less. Additionally, when arranging multiple spherical frangible capsules, the frangible capsule preferably has a diameter of 3.5 mm or less.

[0254] There is no particular limitation on the method for manufacturing the frangible capsule, but preferably, a dropping method capable of producing a frangible capsule with a seamless capsule body is used.

[0255] The aerosol modifier 34 is described as a frangible capsule that releases the content containing the flavor component when an external force is applied, but this is not limited thereto as long as the aerosol can be adjusted.

[0256] For example, the aerosol modifier 34 may be an adsorbent having a function of adsorbing and removing substances generated by heating the substrate portion 10. There is no particular limitation on the adsorbent, and it may include activated carbon, sepiolite, palygorskite, zeolite, activated carbon fiber, activated alumina, sepiolite mixed paper, silica gel, activated clay, vermiculite, diatomaceous earth, ion exchange resin, etc. As the aerosol modifier 34, a granular adsorbent may be added to the filter 31, or an adsorbent granulated into a spherical shape with a diameter of 2.5 mm or more and 4.0 mm or less may be arranged in the filter 31.

[0257] In addition, for example, the aerosol modifier 34 may be a fragrance carrier that releases a fragrance component when moisture or heat is applied. There is no particular limitation on the fragrance carrier, and examples thereof include those in which the fragrance component is carried on carriers such as dextrin and cyclodextrin. As the aerosol modifier 34, a sheet-shaped fragrance carrier may be arranged in the filter 31, or a fragrance carrier granulated into a spherical shape with a diameter of 2.5 mm or more and 4.0 mm or less may be arranged in the filter 31.

[0258] As described above, the filter portion 330 of the flavor inhalation article 3 according to the third embodiment includes the filter 31 as a paper filter, the object 33 having a greater hardness than the position of the non-set object 33 of the filter 31, and the aerosol modifier 34 that modifies the aerosol. Therefore, when the flavor inhalation article 3 is a heat-not-burn type, the feeling of holding it in the mouth or hand can be improved, and the ease of attaching the flavor inhalation article 3 to the inhalation device 100 can be enhanced. Having the aerosol modifier 34 within the filter portion 330 allows the aerosol generated from the substrate portion 10 to be modified during inhalation. In addition, since the aerosol modifier 34 is a fragile capsule that releases a liquid containing a fragrance component when an external force is applied, a new flavor can be imparted to the aerosol.

[0259] <Fourth Embodiment>

[0260] Figure 14 FIG. is a longitudinal sectional view showing a flavor inhalation article 4 according to the fourth embodiment.

[0261] The flavor inhalation article 4 according to the fourth embodiment is different from the flavor inhalation article 1 according to the first embodiment in its use. In addition, the flavor inhalation article 4 according to the fourth embodiment is different from the flavor inhalation article 1 according to the first embodiment in that the mouthpiece portion 450 corresponding to the mouthpiece section 50 and the communication hole 460 corresponding to the through hole 60 are different. The differences from the first embodiment will be described below. The same reference numerals are used for the same elements in the first and fourth embodiments, and their detailed descriptions are omitted.

[0262] The flavor inhalation product 4 is a combustible flavor inhalation product. The flavor inhalation product is used by burning the end face of the first side, which is the side opposite to the second side that is held in the user's mouth for inhalation. The aerosol source 11 contained in the substrate portion 10 generates vapor through heating associated with combustion, and the vapor generates aerosol.

[0263] The cross-section of the flavor inhalation product 4 is substantially circular, and its circumference can be appropriately changed according to the size of the product, but is generally 16 mm or more and 27 mm or less, preferably 22 mm or more and 25 mm or less. It should be noted that if the cross-section is not circular, the above-mentioned circumference is applied by using a circle having the same area as the cross-section, and the circumference of the circle is used.

[0264] The size of the flavor inhalation product 4 in the center line direction can be appropriately changed according to the size of the product, but is generally 60 mm or more and 120 mm or less, preferably 80 mm or more and 100 mm or less.

[0265] The mouthpiece portion 450 is constituted by the filter portion 30.

[0266] The size of the mouthpiece portion 450 in the center line direction can be appropriately changed according to the size of the product, but is generally 20 mm or more and 40 mm or less, preferably 25 mm or more and 30 mm or less.

[0267] In addition, the mouthpiece portion 450 is provided with a plurality of communication holes 460 arranged circumferentially and concentrically. The communication holes 460 are holes that allow the air flowing in from the ventilation holes provided in the tipping paper 40 to communicate with the voids in the filter 31. By adjusting the amount of air flowing in from the communication holes 460, the concentration of the aerosol inhaled by the user can be adjusted.

[0268] In addition, when the filter portion 30 of the mouthpiece portion 450 is in the form in which the filter 31 is wrapped by the wrapper 35 and the tipping paper 40, preferably, the communication holes 460 are provided at positions corresponding to the ventilation holes provided on the tipping paper 40 and at least on the wrapper 35. When manufacturing the flavor inhalation product 4 having such a mouthpiece portion 450, the tipping paper 40 can be wrapped so that the communication holes 460 overlap with the ventilation holes provided in the tipping paper 40, but from the standpoint of ease of manufacturing, it is preferable to first manufacture the flavor inhalation product 4 without the communication holes 460, and then generate holes that penetrate both the mouthpiece portion 450 and the tipping paper 40 simultaneously.

[0269] From the perspective of improving the air inflow efficiency, the region where the communication holes 460 are present is preferably a region where the filling density of the sheet member constituting the filter 31 is relatively low, in other words, a region of the filter 31 where the object 33 is not provided.

[0270] In Figure 14 the illustrated example, the solid object 33 smaller than the filter 31 in the centerline direction is positioned on the first side (substrate portion 10 side) within the filter 31, and the communication holes 460 are provided in the region of the filter 31 where the object 33 is not provided. Specifically, the communication holes 460 are provided in the region downstream of the object 33.

[0271] The communication holes 460 only need to be provided in the region of the filter 31 where the object 33 is not provided, and are not limited to the above configuration.

[0272] Figure 15 FIG. is a diagram showing another example of a longitudinal section of the flavor inhalation article 4 according to the fourth embodiment, where the object 33 is solid, and (A) shows the object 33 positioned on the second side within the filter 31, (B) shows the object 33 positioned closer to the center within the filter 31, and (C) shows a plurality of objects 33 positioned within the filter 31.

[0273] When the solid object 33 smaller than the filter 31 in the centerline direction is positioned on the second side (downstream side) within the filter 31, as Figure 15 shown in (A), the communication holes 460 can be provided in the region upstream of the object 33.

[0274] In addition, when the solid object 33 smaller than the filter 31 in the centerline direction is positioned closer to the center in the centerline direction within the filter 31, as Figure 15 shown in (B), the communication holes 460 can be provided in the region upstream of the object 33. It should be noted that the communication holes 460 can also be provided in the region downstream of the object 33.

[0275] In addition, when a plurality of objects 33 are positioned in a plurality of regions within the filter 31, as Figure 15 shown in (C), the communication holes 460 can be provided in the region of the filter 31 where the object 33 is not provided. The communication holes 460 can be provided in any region upstream, closer to the center, or downstream, as long as the region is a region where the object 33 is not provided.

[0276] As described above, the flavor inhalation article 4 according to the fourth embodiment includes at least a substrate portion 10 containing an aerosol source 11, a filter portion 30 through which the aerosol passes, and a tipping paper 40 wrapped around the outer circumferential surfaces of the substrate portion 10 and the filter portion 30. The filter portion 30 includes a filter 31 which is a paper filter filled with sheet members and an object 33 provided in the filter 31, where the object 33 is harder than the position of the filter 31 where the object 33 is not provided. The object 33 can improve the feeling of holding the filter portion 30 in the mouth or hand. Additionally, the object 33 can be a hollow member.

[0277] <Fifth Embodiment>

[0278] Figure 16 FIG. is a longitudinal sectional view showing a flavor inhalation article 5 according to the fifth embodiment, where the object 33 is solid, and (A) shows the object 33 positioned on the first side within the filter 31, and (B) shows the object 33 positioned on the second side within the filter 31.

[0279] The flavor inhalation article 5 according to the fifth embodiment is different from the flavor inhalation article 4 according to the fourth embodiment in that the filter portion 530 corresponding to the filter portion 30 is different. The differences from the fourth embodiment will be described below. The same reference numerals are used for the same elements in the fourth and fifth embodiments, and their detailed descriptions are omitted.

[0280] The filter portion 530 includes a filter 31 which is a paper filter, a separate filter 32 which is a separate filter separate from the filter 31, an object 33 provided within the filter 31 and harder than the position of the filter 31 where the object 33 is not provided, and a wrapper paper 35 present between the filter 31 and the tipping paper 40 and wrapped around the outer circumferential surface of the filter 31. By using the tipping paper 40 to integrally wrap the substrate portion 10 and the filter portion 530 together, the filter portion 530 is connected (coupled) to the substrate portion 10. Preferably, the filter 31 and the separate filter 32 are each wrapped by a separate wrapper paper 35 and then further wrapped together by another wrapper paper 35.

[0281] The configuration of the separate filter 32 in the filter portion 530 can be exemplified as being the same as the separate filter 32 included in the filter portion 230 according to the second embodiment. The shapes and sizes of the filter 31 and the separate filter 32 can be appropriately adjusted such that the shape and size of the filter portion 530 fall within the aforementioned ranges.

[0282] The filter section 530 includes a separate filter 32 connected to the second side of the substrate section 10 and a filter 31 positioned on the second side of the separate filter 32. The separate filter 32 is positioned on the upstream side, and the filter 31 is positioned on the downstream side. As Figure 16 shown in (A), a solid object 33 smaller than the filter 31 in the centerline direction is positioned on the first side (upstream side) within the filter 31, and a communication hole 460 may be provided in the region downstream of the object 33. Additionally, as Figure 16 shown in (B), a solid object 33 smaller than the filter 31 in the centerline direction is positioned on the second side (downstream side) within the filter 31, and a communication hole 460 may be provided in the region upstream of the object 33.

[0283] The configuration of the filter section 530 is not limited to Figure 16 the examples shown in (A) and (B), and the positional relationship between the filter 31 and the separate filter 32 may be changed.

[0284] Figure 17 FIG. is a longitudinal sectional view showing the flavor inhalation article 5 according to the fifth embodiment, where the object 33 is solid, and (A) shows the object 33 positioned on the first side within the filter 31, and (B) shows the object 33 positioned on the second side within the filter 31.

[0285] The filter section 530 includes a filter 31 connected to the second side of the substrate section 10 and a separate filter 32 positioned on the second side of the filter 31. The filter 31 is positioned on the upstream side, and the separate filter 32 is positioned on the downstream side. As Figure 17 shown in (A), a solid object 33 smaller than the filter 31 in the centerline direction is positioned on the first side (upstream side) within the filter 31, and a communication hole 460 may be provided in the region downstream of the object 33. Additionally, as Figure 17 shown in (B), a solid object 33 smaller than the filter 31 in the centerline direction is positioned on the second side (downstream side) within the filter 31, and a communication hole 460 may be provided in the region upstream of the object 33.

[0286] As described above, the filter portion 530 of the flavor inhalation article 5 according to the fifth embodiment includes a filter 31 that is a paper filter, a separate filter 32 that is a separate filter separate from the filter 31, and an object 33 provided within the filter 31 that is harder than the position of the filter 31 where no object 33 is provided. It should be noted that in the above example, the filter portion 530 has a dual structure that has a separate filter 32 in addition to the filter 31 that is a paper filter, but is not limited thereto. In addition to the filter 31 that is a paper filter, the filter portion 530 may have two or more filters. The object 33 can improve the feel of holding the filter portion 530 in the mouth or hand. Additionally, the object 33 can be a hollow member.

[0287] <Sixth Embodiment>

[0288] Figure 18 FIG. is a longitudinal sectional view showing a flavor inhalation article 6 according to the sixth embodiment, where the object 33 is solid, and (A) shows the object 33 positioned on the first side of the aerosol modifier 34, (B) shows the object 33 positioned on the second side of the aerosol modifier 34, and (C) shows the object 33 positioned on both the first side and the second side of the aerosol modifier 34.

[0289] The flavor inhalation article 6 according to the sixth embodiment differs from the flavor inhalation article 4 according to the fourth embodiment in that the filter portion 630 corresponding to the filter portion 30 is different. The differences from the fourth embodiment will be described below. The same reference numerals are used for the same elements in the fourth and sixth embodiments, and their detailed descriptions are omitted.

[0290] The filter portion 630 includes a filter 31 that is a paper filter, an object 33 having a filtration rate lower than that of the filter 31, an aerosol modifier 34 that modifies the aerosol, and a wrapper paper 35 that exists between the filter 31 and the tipping paper 40 and wraps around the outer circumferential surface of the filter 31. The filter portion 630 is connected (coupled) to the substrate portion 10 by integrally wrapping the substrate portion 10 and the filter portion 630 with the tipping paper 40. It should be noted that the wrapper paper 35 may not be included.

[0291] The configuration of the aerosol modifier 34 in the filter portion 630 can be exemplified as being the same as the aerosol modifier 34 included in the filter portion 330 according to the third embodiment.

[0292] When the aerosol modifier 34 is positioned on the second side (downstream side) with respect to the object 33 and is arranged in a straight line with the object 33 in the center line direction, as Figure 18As shown in (A), the communication hole 460 can be provided in the region between the object 33 and the aerosol modifier 34. Additionally, the communication hole 460 can be provided in the region downstream of the aerosol modifier 34.

[0293] Furthermore, when the aerosol modifier 34 is positioned on the first side (upstream side) with respect to the object 33 and arranged in a straight line with the object 33 in the centerline direction, as Figure 18 shown in (B), the communication hole 460 can be provided in the region between the object 33 and the aerosol modifier 34. Additionally, the communication hole 460 can be provided in the region upstream of the aerosol modifier 34.

[0294] Moreover, when the aerosol modifier 34 is positioned on both the first side (upstream side) and the second side (downstream side) with respect to the object 33 and arranged in a straight line with a plurality of objects 33 in the centerline direction, as Figure 18 shown in (C), the communication hole 460 can be provided in the region between the object 33 and the aerosol modifier 34.

[0295] As described above, the filter portion 630 of the flavor inhalation article 6 according to the sixth embodiment includes a filter 31 that is a paper filter, an object 33 provided within the filter 31 that is harder than the position of the filter 31 where the object 33 is not provided, and an aerosol modifier 34 that modifies the aerosol. By disposing the object 33 within the filter portion 630, the feeling of holding the filter portion 630 in the mouth or hand can be improved. Additionally, the object 33 can be a hollow member. Moreover, if the aerosol modifier 34 is harder than the position of the filter 31 where the aerosol modifier 34 is not provided, the aerosol modifier becomes a second object and can further enhance the feeling of holding and using the filter portion 630.

[0296] <Overview>

[0297] This disclosure includes the following configurations.

[0298] (1) A filter portion for a flavor inhalation article, the filter portion including a paper filter and an object provided within the paper filter, wherein the object is harder than the position of the paper filter where the object is not provided.

[0299] (2) The filter portion for a flavor inhalation article according to (1), wherein when measured with a Borgwaldt DD60A, the hardness at the position corresponding to the object of the filter portion is 85% or more.

[0300] (3) The filter part for a flavor inhalation product according to (1) or (2), wherein, at a strain rate of 10%, the stress at a predetermined strain at a position corresponding to the object of the filter part is 1.0 N or more and 10 N or less.

[0301] (4) The filter part for a flavor inhalation product according to any one of (1) to (3), wherein, at a strain rate of 10%, the stress at a predetermined strain at a position not corresponding to the object of the filter part is 0.2 N or more and 1.5 N or less.

[0302] (5) The filter part for a flavor inhalation product according to any one of (1) to (4), wherein the object is an elongated hollow or solid three-dimensional body and is arranged along the longitudinal direction of the filter part.

[0303] (6) The filter part for a flavor inhalation product according to any one of (1) to (5), wherein the paper filter is a filter filled with sheet members.

[0304] (7) The filter part for a flavor inhalation product according to any one of (1) to (6), wherein the paper filter is a filter filled with the sheet members such that voids are formed across the longitudinal direction of the filter part.

[0305] (8) The filter part for a flavor inhalation product according to any one of (1) to (7), wherein the paper filter is a filter in which the sheet members are curled therein.

[0306] (9) The filter part for a flavor inhalation product according to any one of (1) to (8), wherein the paper filter is a filter in which the sheet members are densely pleated therein.

[0307] (10) A flavor inhalation product, comprising: the filter part for a flavor inhalation product according to any one of (1) to (9); and a substrate part, the substrate part including an aerosol source.

[0308] (11) The flavor inhalation product according to (10), wherein the flavor inhalation product is a heat-not-burn type flavor inhalation product.

[0309] (12) The flavor inhalation product according to (10), wherein the flavor inhalation product is a combustion type flavor inhalation product.

[0310] This application claims priority based on PCT applications PCT / JP 2022 / 47985, PCT / JP2022 / 47988, and PCT / JP 2022 / 47989, filed on December 26, 2022, the contents of which are incorporated herein by reference.

[0311] List of Reference Numerals

[0312] 1, 2, 3, 4, 5, 6... Flavored inhalation articles, 10... Matrix portion, 11... Aerosol source, 20... Cooling portion, 30, 230, 330, 430, 530, 630... Filter portion, 31... Filter, 31a... Sheet member, 31b... Void, 32... Separate filter, 33... Object, 34... Aerosol modifier, 35... Wrapping paper, 40... Mouthpiece wrapper, 50... Mouthpiece section, 60... Through-hole, 450... Mouthpiece portion, 460... Communication hole

Claims

1. A filter part for a flavor inhalation article, the filter part comprising a paper filter and an object disposed within the paper filter, wherein, The object is harder than the position of the paper filter where the object is not provided.

2. The filter part for a flavored inhalation article according to claim 1, wherein, When measured with Borgwaldt DD60A, the hardness at the position corresponding to the object of the filter part is more than 85%.

3. The filter section for a flavor inhalation article according to claim 1, wherein, At a strain rate of 10%, the stress at a predetermined strain at the position corresponding to the object of the filter part is 1.0 N or more and 10 N or less.

4. The filter section for a flavored inhalation article according to claim 3, wherein, At a strain rate of 10%, the stress at a predetermined strain at the position not corresponding to the object of the filter part is 0.2 N or more and 1.5 N or less.

5. The filter part for a flavored inhalation article according to any one of claims 1 to 4, wherein, The object is an elongated hollow or solid three-dimensional body and is arranged along the longitudinal direction of the filter part.

6. The filter part for a flavor inhalation article according to any one of claims 1 to 5, wherein, The paper filter is a filter filled with sheet members.

7. The filter section for a flavor inhalation article according to claim 6, wherein, The paper filter is a filter filled with the sheet members such that voids are formed across the longitudinal direction of the filter part.

8. The filter part for a flavored inhalation article according to claim 6 or 7, wherein, The paper filter is a filter in which the sheet members made of paper or non-woven fabric are curled.

9. The filter section for a flavor inhalation article according to any one of claims 6 to 8, wherein, The paper filter is a filter in which the sheet members are densely wrinkled.

10. A flavor inhalation article, the flavor inhalation article comprising a filter part for a flavor inhalation article according to any one of claims 1 to 9 and a substrate part, the substrate part comprising an aerosol source.

11. The flavor inhalation article according to claim 10, wherein, The flavor inhalation article is a heat-not-burn type flavor inhalation article.

12. The flavor inhalation article according to claim 10, wherein, The flavor inhalation article is a combustion type flavor inhalation article.

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