Segment for aerosol generating article, aerosol generating article, and non-combustion type aerosol generating system

Abstract

A segment for an aerosol generating article according to the present invention includes a sheet material and a wrapper that is wrapped around the sheet material. The segment for an aerosol generating article has pores, and the volume of pores having a pore diameter of 70-200 μm inclusive is greater than the volume of pores having a pore diameter of 0.5 μm or more and less than 70 μm.

Description

Aerosol Product Segment, Aerosol Product and Non-Combustion Aerosol Generating System

[0001] The present invention relates to a segment for an aerosol product, an aerosol product, and a non-combustion aerosol generating system.

[0002] Aerosol products having a tobacco rod formed by filling a tobacco filler material containing tobacco raw materials (e.g., tobacco shreds, tobacco granules, a molded tobacco sheet, etc.) and an aerosol base material (glycerin, propylene glycol, etc.) inside a cigarette paper are known (see, for example, Patent Document 1). This type of aerosol product is a non-combustion aerosol product in which the tobacco filler material is heated without combustion by an electric heater in a heating device, and an aerosol generated in the tobacco filler material is delivered to the user.

[0003] Generally, non-combustion aerosol products are composed of multiple segments, and each segment can have various configurations depending on its purpose. One known segment configuration is a configuration in which a sheet material is wrapped with a wrapper. For example, Patent Document 2 discloses a non-combustion aerosol product having a filter segment containing a paper sheet as a filter material.

[0004] JP 2015-503335 A International Publication No. 2022 / 230408

[0005] As described above, it is known to use a structure in which a sheet material is wrapped with a wrapper as a structure for a segment provided in a non-combustion aerosol product. However, little development has been done focusing on the relationship between this structure and specific properties, leaving room for improvement. For example, in a non-combustion aerosol product inserted into an electrically heated device, if the airflow resistance of the segment is too high, not only unwanted fine particles but also aerosol components are removed. Therefore, it is desirable to reduce the airflow resistance of the segment. However, there have been few attempts to reduce the airflow resistance by examining the specific configuration conditions of the segment, especially in an embodiment using a sheet material. The present inventors have attempted to improve this from this perspective.

[0006] An object of the present invention is to provide a segment for an aerosol product having low airflow resistance, a non-combustion aerosol product comprising the segment, and a non-combustion aerosol generation system comprising the non-combustion aerosol product.

[0007] As a result of intensive research to solve the above-mentioned problems, the inventors of the present invention discovered that the above-mentioned problems can be solved by satisfying the relationship that the cumulative pore volume of pore diameters in a specific range is larger than the cumulative pore volume of pore diameters in a specific range smaller than the pore diameter in question, and arrived at the present invention.

[0008] The gist of the present invention is as follows: [1] A segment for an aerosol product comprising a sheet material and a wrapper wrapping the sheet material, the segment having pores, the cumulative pore volume of which is greater than or equal to 70 μm and less than or equal to 200 μm in diameter, being greater than the cumulative pore volume of which is greater than or equal to 0.5 μm and less than 70 μm. [2] The segment for an aerosol product according to [1], wherein the cumulative pore volume of which is greater than or equal to 70 μm and less than or equal to 200 μm in diameter relative to the total cumulative pore volume of which is greater than or equal to 70 μm and less than or equal to 70 μm in diameter in the segment is 55% or more. [3] The segment for an aerosol product according to [1] or [2], wherein the cumulative pore volume of which is greater than or equal to 0.5 μm and less than or equal to 200 μm in diameter is 3.5 mL / g or more and 6.0 mL / g or less. [4] A segment for an aerosol product according to any one of [1] to [3], having a hardness of 70.0% or more as measured by the following measurement method. Measurement method: 1) The segment to be measured is placed on a substrate with its longitudinal direction horizontal, and its height Ds is measured. 2) The side surface of the segment is pressed and compressed using a pressure jig. Pressure: 300 g, pressure time: 10 seconds, pressure jig head diameter: φ12 mm 3) The height Dd of the segment after pressure is measured. 4) The hardness H (%) is calculated using the following formula: H (%) = Dd / Ds × 100 [5] An aerosol product segment having an airflow resistance of 350 mmH ２ [6] The segment for an aerosol product according to any one of [1] to [4], wherein the average channel size is 0.01 mm or less. ２ More than 0.20 mm ２[7] The aerosol product segment according to any one of [1] to [5], wherein the sheet material has an air permeability of 7,000 Coresta units or more and 30,000 Coresta units or less. [8] The aerosol product segment according to any one of [1] to [7], wherein the sheet material has a basis weight of 20 gsm or more and 35 gsm or less. [9] The aerosol product segment according to any one of [1] to [8], wherein the sheet material is paper.

[10] An aerosol product comprising an aerosol generation unit and a filter unit, wherein the filter unit comprises at least one aerosol product segment according to any one of [1] to [9].

[11] The aerosol product according to

[10] , further comprising a cooling unit between the aerosol generation unit and the filter unit.

[12] An aerosol product comprising an aerosol generation section and a filter section, and further comprising a tip segment upstream of the generation segment in the airflow direction, the tip segment being the segment described in any one of [1] to [9].

[13] The aerosol product according to any one of

[10] to

[12] , wherein the aerosol product is a non-combustion aerosol product.

[14] A non-combustion aerosol generation system comprising the aerosol product according to any one of

[10] to

[13] and a non-combustion aerosol generation device that heats the aerosol product.

[0009] According to the present invention, it is possible to provide a segment for an aerosol product having low air resistance, a non-combustion aerosol product comprising the segment, and a non-combustion aerosol generation system comprising the non-combustion aerosol product.

[0010] Figure 1 is a schematic diagram of an aerosol product according to an embodiment of the present invention. Figure 2 is a cross-sectional schematic diagram of an aerosol product according to an embodiment of the present invention. Figure 3 is a cross-sectional schematic diagram of an aerosol product according to an embodiment of the present invention. Figure 4 is a schematic diagram of a non-combustion aerosol generating system according to an embodiment of the present invention. Figure 5 is a graph showing the relationship between the average channel size and the ratio of the number of channels of a specific segment measured in an example.

[0011] The following describes embodiments of the present invention in detail. However, these descriptions are merely examples (representative examples) of embodiments of the present invention, and the present invention is not limited to these descriptions as long as they do not depart from the gist of the present invention. In this specification, a numerical range expressed using "to" means a range that includes the numerical values ​​before and after "to" as the lower and upper limits, and "A to B" means A or more and B or less. Furthermore, when a numerical range expressed as "A to B" or "A or more and B or less" is described in stages (e.g., in order of preference), the upper and lower limits of each numerical range can be arbitrarily combined. Furthermore, in this specification, the expression "A or B" may be interpreted as "at least one selected from the group consisting of A and B." Furthermore, although multiple embodiments are described in this specification, various conditions in each embodiment may be applied to each other to the extent applicable. Furthermore, while each figure in the drawings shows the X, Y, and Z directions, the left-right direction of the aerosol product or the non-combustion aerosol-generating device into which the aerosol product is inserted is indicated as the X direction, the up-down direction is indicated as the Y direction, and the depth direction is indicated as the Z direction. These directions are merely illustrative and are not intended to limit the elements in the drawings, for example, elements of a non-combustion aerosol generating system are not limited to being arranged in the directions shown in the drawings.

[0012] Although embodiments of the aerosol product and the like will be described with reference to the drawings, the embodiments are not limited to these. Note that although the present specification may use drawings to describe each embodiment, the dimensions, materials, shapes, and relative positions of components described in the drawings and the description of each embodiment are merely examples.

[0013] <Segment for an aerosol product> The segment for an aerosol product according to one embodiment of the present invention is a segment for an aerosol product comprising a sheet material and a wrapper around which the sheet material is wrapped, the segment having pores, and a cumulative pore volume having a pore diameter of 70 μm or more and 200 μm or less that is greater than the cumulative pore volume having a pore diameter of 0.5 μm or more and less than 70 μm. Hereinafter, this segment may be referred to simply as a "segment," or may be referred to as a "specific segment" to distinguish it from other segments.

[0014] After extensive research, the inventors have found that in a segment including a sheet material and a wrapper wrapping the sheet material, the cumulative pore volume of pores having a specific pore diameter range of 70 μm to 200 μm is greater than the cumulative pore volume of pores having a specific pore diameter range of 0.5 μm to less than 70 μm, thereby reducing airflow resistance. The inventors speculate that this is because a flow path through which aerosols pass on the surface and inside of the sheet material is adequately formed in the segment. While examples of segments including sheet material include paper filters, paper filters using general paper have high filtering capabilities, and therefore the cumulative pore volume of pores having a pore diameter of 70 μm to 200 μm is smaller than the cumulative pore volume of pores having a pore diameter of 0.5 μm to less than 70 μm.

[0015] The pore volume in this specification is obtained by measuring the distribution of pores (pore distribution) within a specified range of pore diameters in a segment using mercury intrusion porosimetry. The term "cumulative pore volume" in this specification refers to the cumulative (integrated) volume of pores within a specified range of pore diameters divided by the mass of the segment. The term "pores" as used here primarily refers to tiny holes in the sheet material packed into the segment and tiny gaps between sheets that may arise due to the state of sheet packing. These tiny holes and gaps affect the measurement results of mercury intrusion porosimetry within the range of measurement pressure (mercury pressure) used in mercury intrusion porosimetry. Meanwhile, when mercury is injected into a sample container, the mercury is injected at a pressure lower than the measurement pressure, and this also injects mercury into relatively large gaps within the segment. These relatively large gaps into which mercury can be injected at a pressure lower than the measurement pressure are not included in the term "pores."

[0016] The pore volume is measured using mercury intrusion porosimetry. In mercury intrusion porosimetry, the pressure applied to mercury is varied and the amount of mercury that penetrates into the pores of the sample is measured. The conditions under which mercury can penetrate into the pores can be expressed as D = -4σ cos θ / P, where P is the pressure, D is the pore diameter, θ is the contact angle of mercury, and σ is the surface tension. If the contact angle and surface tension are constants, then the pressure P is inversely proportional to the pore diameter D into which mercury can penetrate. Therefore, the pore distribution can be calculated by substituting the horizontal axis P of the P-V curve, P, for the pore diameter in this equation, which is obtained by measuring the pressure P and the amount of intrusion liquid V at that time while varying the pressure.

[0017] For the measurement, a mercury intrusion pore volume measuring device (for example, MicroActive AutoPore V 9600 manufactured by Micromeritics) is used, with a mercury pressure of 1.07 to 423.15 psia, a mercury contact angle θ of 140°, and a surface tension σ of 480 dynes / cm. The pore distribution is calculated from the measurement results using the accompanying software. In this test method, the pore volume is obtained as the volume per weight of each segment. To further analyze the pore distribution in detail, the differential pore volume dV is divided by the logarithmic difference value d (log D) of the pore diameter, and the value obtained is taken as the log differential pore volume on the vertical axis. Then, by taking the pore diameter on the horizontal axis, a graph of the log differential pore volume distribution can be obtained. Furthermore, the cumulative pore volume can be calculated by integrating the pore volume at each pore diameter. In the examples described below, the pore volume of the segment was measured according to the above-mentioned device and measurement conditions.

[0018] The ratio of the cumulative pore volume of pores with a diameter of 70 μm to 200 μm to the sum of the cumulative pore volume of pores with a diameter of 70 μm to 200 μm and the cumulative pore volume of pores with a diameter of 0.5 μm to less than 70 μm in the segment is not particularly limited as long as it is more than 50%, but from the viewpoint of easily obtaining the desired air resistance, it is preferably 55% or more, more preferably 58% or more, even more preferably 60% or more, and preferably 80% or less, more preferably 71% or less, and even more preferably 65% ​​or less. Preferred ranges of the above ratio include, for example, 55 to 80%, 55 to 71%, 55 to 70%, and 58 to 65%, etc.

[0019] The cumulative pore volume of the segment can be adjusted, for example, by appropriately adjusting the type, density, and filling amount of the sheet material to be filled. Specifically, by selecting a low-density sheet material and reducing the filling amount, the cumulative pore volume of the segment with pores having a diameter of 70 μm or more and 200 μm or less tends to increase, and the cumulative pore volume of the segment with pores having a diameter of 0.5 μm or more and less than 70 μm tends to decrease. Furthermore, a similar tendency is observed when the segment is produced using the preferred production method described below.

[0020] The cumulative pore volume of the segments having pore diameters of 0.5 μm to 200 μm is not particularly limited, but from the viewpoints of airflow resistance and appearance, it is preferably 3.5 mL / g or more, more preferably 3.9 mL / g or more, and even more preferably 4.0 mL / g or more. From the viewpoints of airflow resistance and appearance, it is preferably 6.0 mL / g or less, more preferably 4.7 mL / g or less, and even more preferably 4.5 mL / g or less. Preferred ranges include, for example, 3.5 to 6.0 mL / g, 3.9 to 4.7 mL / g, 3.9 to 4.5 mL / g, and 4.0 to 4.5 mL / g.

[0021] The hardness of the segment measured by the following measurement method is not particularly limited. However, from the viewpoint of bite comfort, it is preferably 70.0% or more, more preferably 80.0% or more, even more preferably 83.0% or more, and particularly preferably 85.0% or more. It may also be 95.0% or less, or even 90.0% or less. Preferred ranges of the hardness include, for example, 70.0 to 95.0%, 80.0 to 90.0%, and 85.0 to 89.0%. Measurement method: Measurement can be performed using a hardness measuring device such as an SODIM-H hardness module using the following method. 1) The segment to be measured is placed on a substrate with its longitudinal direction horizontal, and its height Ds is measured. 2) The side surface of the segment is compressed by applying pressure using a pressure jig. Pressure: 300 g, pressure time: 10 seconds, pressure jig head diameter: φ12 mm. 3) The height Dd of the segment after pressure is measured. 4) The hardness H (%) is calculated using the following formula. H (%)=Dd / Ds×100

[0022] The airflow resistance of the segments is set at 50mmH from the viewpoint of comfortable drawing. ２ 0 / 120 mm or more is preferable, and 100 mmH ２ 0 / 120 mm or more is more preferable, and 120 mmH ２ 0 / 120 mm or more is more preferable, and from the viewpoint of aerosol delivery, 350 mmH ２ 0 / 120 mm or less is preferable, and 300 mmH２ 0 / 120 mm or less is more preferable, and 250 mmH ２ The preferable range of the airflow resistance is, for example, 50 to 350 mmH. ２ O / 120mm, 100-300mmH ２ O / 120mm, 120-250mmH ２ O / 120mm, 160-250mmH ２ 0 / 120 mm, etc.

[0023] The airflow resistance of the above-mentioned segment is measured in accordance with the ISO standard method (ISO 6565:2015) using, for example, a filter airflow resistance measuring device manufactured by Cerulean Co., Ltd. The airflow resistance refers to the air pressure difference between the first end face and the second end face when air is flowed at a predetermined air flow rate (17.5 cc / sec) from one end face (first end face) to the other end face (second end face) of the aerosol-generating segment in a state where air does not pass through the side face. The unit is generally mmH. ２ The airflow resistance is represented by O. It is known that the relationship between the airflow resistance and the aerosol-generation segment is proportional within the length range typically used (5 to 200 mm), and if the length of the aerosol-generation segment is doubled, the airflow resistance will also be doubled. The same applies to the airflow resistances described below. The airflow resistance of the aerosol product described below and the airflow resistance of each segment constituting the aerosol product are measured using the same method as described above.

[0024] The average channel size of the segments is not particularly limited, but from the viewpoint of appearance, it is set to 0.20 mm. ２ Preferably, it is 0.15 mm or less. ２ More preferably, it is 0.12 mm or less. ２ The lower limit is not particularly limited, but is usually 0 mm ２ The average cross-sectional area per channel is preferably 0.01 mm ２ More preferably, it is 0.05 mm or more. ２ A preferred range of the airflow resistance is, for example, 0.01 to 0.20 mm ２,0.05~0.15mm ２ ,0.05~0.12mm ２ The average channel size tends to increase as the width of the sheet to be filled is reduced, and tends to decrease as the crimp depth is increased. The average channel size can be measured as follows.

[0025] The average channel size is measured by photographing the end face of the segment with a camera and analyzing the acquired end face image. For example, a Keyence Corporation "High-Performance 16x Speed ​​470,000 Pixel Black and White Camera CA-H048MX" is used as the camera for image analysis. Examples of other equipment are shown in Table 1 below.

[0026]

[0027] The image analysis can be based on a method commonly used by those skilled in the art, such as (1) capturing an image of the end face perpendicular to the longitudinal direction of the segment, (2) performing shading correction and binarization as preprocessing, and (3) performing blob processing to extract the area of ​​the black mass (corresponding to the channel).

[0028] It is also preferable that the maximum peak in the log differential pore volume distribution of the segment is in the pore diameter range of 50 to 150 μm. The log differential pore volume distribution is a graph in which the vertical axis (pore volume) of the pore distribution measured by mercury intrusion porosimetry is divided by the mass of the segment. Details will be described later in the Examples. If the maximum peak in the log differential pore volume distribution of the segment is in the pore diameter range of 70 to 130 μm, the desired airflow resistance is more easily obtained.

[0029] The maximum peak in the log differential pore volume distribution of the segment is more preferably in the pore diameter range of 80 to 120 μm, and even more preferably in the pore diameter range of 85 to 110 μm.

[0030] The maximum peak in the log differential pore volume distribution of the segment can be adjusted, for example, by appropriately adjusting the type, density, filling amount, etc. of the sheet material to be filled. Specifically, the pore diameter at the maximum peak in the log differential pore volume distribution tends to decrease by decreasing the density of the sheet material or increasing the filling amount.

[0031] [Sheet Material] The structure of the sheet material is not particularly limited, and known sheet-like materials such as paper, tobacco sheets, films, or nonwoven fabrics can be used. Among these, paper is preferable from the viewpoint of biodegradability. On the other hand, paper has high filtration capacity. If the filling amount of the sheet material is reduced to reduce this high filtration capacity, the stability of the rod, which can be evaluated by hardness, etc., will deteriorate. However, in the embodiment according to the present invention, it is easy to obtain a segment with reduced filtration capacity while maintaining rod stability.

[0032] The manner in which the sheet material is arranged is not particularly limited, and it can be arranged in the same manner as a paper filter in a general filter segment. For example, the sheet material may be gathered after being crimped (a process of making vertical grooves).

[0033] The width of the sheet material (the length of the sheet material in the direction perpendicular to the axial direction of the segment) depends on the size and shape of the segment, but as an example, when the segment is rod-shaped and has a diameter of 7 mm (preferably a major axis length of 12 mm), it is usually 100 to 300 mm, more preferably 150 to 280 mm, and even more preferably 180 to 250 mm. When the width of the sheet material is within the above range, low filtration can be achieved.

[0034] In particular, it is preferable to form a gathered arrangement (a configuration in which multiple channels for vertical air flow are provided) after the sheet material has been crimped. This configuration makes it easier to ensure air flow paths in the ventilation direction, allowing for efficient delivery of flavor components to the user. The crimp depth is preferably 0.1 to 1.0 mm, more preferably 0.2 to 0.7 mm, and even more preferably 0.3 to 0.5 mm.

[0035] The amount of sheet material placed in a segment depends on the size and shape of the segment, but as an example, when the segment is rod-shaped with a major axis length of 12 mm and a diameter of 7 mm, it is usually 25 to 200 mg, preferably 50 to 150 mg, and more preferably 60 to 80 mg. The packing density of the sheet material in the segment is preferably 0.05 to 0.30 g / cm. ３ , more preferably 0.10 to 0.20 g / cm ３ and more preferably 0.14 to 0.16 g / cm ３ When the packing density of the sheet material is within the above range, it is possible to ensure sufficient delivery of flavor while ensuring the effect as a filter.

[0036] The air permeability of the sheet material is not particularly limited, but from the viewpoint of obtaining a desired appearance and a desired air resistance, it is preferably 3,000 Coresta units or more, more preferably 7,000 Coresta units or more, even more preferably 10,000 Coresta units or more, and particularly preferably 12,000 Coresta units or more, and is preferably 35,000 Coresta units or less, more preferably 30,000 Coresta units or less, and even more preferably 25,000 Coresta units or less. Preferred ranges of the air permeability include, for example, 3,000 to 35,000 Coresta units, 7,000 to 30,000 Coresta units, 10,000 to 25,000 Coresta units, and 12,000 to 25,000 Coresta units. The air permeability is a value measured in accordance with ISO 2965:2009, and is the rate at which an area of ​​1 cm is broken down per minute when the differential pressure between both sides of the paper is 1 kPa. ２ Flow rate of gas passing through (cm ３ 1 C.U. is expressed as 1 cm under 1 kPa. ３ / (min cm ２ )

[0037] The basis weight of the sheet material is not particularly limited, but is preferably 10 gsm or more, more preferably 20 gsm or more, even more preferably 21 gsm or more, and particularly preferably 22 gsm or more. It is also preferably 40 gsm or less, more preferably 35 gsm or less, even more preferably 30 gsm or less, and particularly preferably 28 gsm or less. Preferred basis weight ranges include, for example, 10 to 40 gsm, 20 to 35 gsm, 21 to 30 gsm, and 22 to 28 gsm. The thickness of the sheet material is not particularly limited, but is preferably 40 μm or more and 80 μm or less, and more preferably 50 μm or more and 70 μm or less. When the basis weight and thickness of the sheet material are within the above ranges, crimping can be performed appropriately. Specifically, if the sheet material has too low a basis weight or is too thin, it tends to break easily when crimped, and if the basis weight or thickness is too high, the crimping pressure will be overwhelmed by the strength of the paper when crimped, and the crimping will not be successful.

[0038] The density of the sheet material is not particularly limited, but is preferably 0.10 g / cm ３ It is preferable that the density is 0.20 g / cm or more. ３ More preferably, it is 0.25 g / cm or more. ３ More preferably, it is 0.35 g / cm or more. ３ It is particularly preferable that the density is 1.10 g / cm ３ Preferably, it is 1.00 g / cm or less. ３ More preferably, it is 0.60 g / cm or less. ３ More preferably, it is 0.50 g / cm or less. ３ It is particularly preferable that the concentration is 0.40 g / cm or less. ３ The preferred range of the basis weight is, for example, 0.10 to 1.10 g / cm. ３ ,0.10~1.00g / cm ３ ,0.20~0.60g / cm ３ ,0.25~0.50g / cm ３ ,0.35~0.40g / cm３ etc.

[0039] The sheet material may contain a flavoring or an aerosol base material. The flavoring contained in the sheet material is not particularly limited, and examples thereof include menthol, tobacco leaf extract, and natural plant flavorings. These flavorings may be used alone or in combination. The aerosol base contained in the sheet material is not particularly limited, and examples thereof include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof. These aerosol bases may be used alone or in combination.

[0040] [Wrapper] The wrapper for wrapping the sheet material is not particularly limited, and for example, a wrapper generally used as a filter wrapper for wrapping a filter medium in a filter segment can be used. The wrapper may also include one or more rows of adhesive seams. The adhesive may include a hot-melt adhesive, and the hot-melt adhesive may further include polyvinyl alcohol. When connecting the above-mentioned segment to another segment, it is preferable to wrap these two or more segments together in a connecting wrapper (outer wrapper) in order to connect the two or more segments. It is preferable to wrap these two or more segments together. The wrapper material is not particularly limited, and known materials can be used, and may also contain fillers such as calcium carbonate.

[0041] The thickness of the wrapper is not particularly limited, but is usually from 20 μm to 140 μm, preferably from 30 μm to 130 μm, and more preferably from 30 μm to 120 μm. The basis weight of the wrapper is not particularly limited, but is usually from 20 gsm to 100 gsm, preferably from 22 gsm to 95 gsm, and more preferably from 23 gsm to 90 gsm.

[0042] The wrapper may be coated or uncoated, but is preferably coated with a desired material from the viewpoint of imparting functions other than strength and structural rigidity. When coating is performed, it is sufficient that a coating agent is added to at least one of the two surfaces, the front and back surfaces, of the wrapper.

[0043] The wrapper may be liquid-proof paper to prevent leakage of liquid.

[0044] In the segments, the wrapper may wrap materials other than the sheet material, such as granules or capsules that may provide additional functions such as a flavor source or an adsorbent.

[0045] The size of the segment, such as its axial length and cross-sectional area perpendicular to the axial direction, can be set appropriately depending on the use of the segment. When used as a filter segment, the size can be as described in the section on filter segments below, and when used as a tip segment, the size can be as described in the section on tip segments below.

[0046] The method for manufacturing the segments is not particularly limited, and they can be manufactured using the same manufacturing method for paper filter segments used in general aerosol products. However, from the viewpoint of increasing the cumulative pore volume in the segments with pore diameters of 70 μm or more and 200 μm or less and easily decreasing the cumulative pore volume of pore diameters of 0.5 μm or more and less than 70 μm, it is preferable to manufacture the segments by reducing the width of the sheet material or increasing the air permeability to reduce the packing density of the sheet material, or by shallowing the crimp depth within a range that does not increase the channel size.

[0047] <Aerosol product> An aerosol product according to another embodiment of the present invention (hereinafter also simply referred to as "aerosol product") is an aerosol product comprising an aerosol generating section and a filter section, wherein the filter section comprises at least one of the above-described segments (specific segments).

[0048] The use mode of the aerosol product according to this embodiment is not particularly limited, and may be a non-combustion type aerosol product or a cigarette (cigarette). However, in the case of a non-combustion type aerosol product that is used by inserting it into an electrically heated device, if the airflow resistance of the product is too high, not only unwanted fine particles but also flavor components are removed, so from the viewpoint that it is desirable to reduce the airflow resistance of the product, a non-combustion type aerosol product is preferable. Hereinafter, a non-combustion type aerosol product will be described in detail using an example of the aerosol product.

[0049] An example of the aerosol product 100 according to this embodiment has a substantially cylindrical rod shape. In the example shown in Figures 1, 2, and 3, the aerosol product 100 includes an aerosol-generating unit 110, a cooling unit 120, a filter unit 130 formed by wrapping a filter medium 150 around a filter wrapper 160, and tipping paper 140 that connects these together. The cooling unit 120 and the filter unit 130 are connected coaxially to the aerosol-generating unit 110 by being wrapped around the tipping paper 140 together with the aerosol-generating unit 110.

[0050] When the aerosol product 100 of this embodiment is used as a cigarette, it may have a cooling section 120, but since cigarettes generally do not have a cooling section, it can be used in a form in which the aerosol generating section 110 does not have a cooling section 120 and extends to the area where the cooling section 120 is present.

[0051] Reference numeral 101 denotes the mouth end of the aerosol product 100 (filter portion 130). Reference numeral 102 denotes the tip of the aerosol product 100 opposite the mouth end 101. The aerosol generating portion 110 is disposed on the tip 102 side of the aerosol product 100. In the examples shown in Figures 1, 2, and 3, the aerosol product 100 has a substantially constant diameter over the entire length from the mouth end 101 along the tip 102 in the longitudinal direction (hereinafter also referred to as the axial direction or Z direction).

[0052] The configuration of the aerosol product 100 is not particularly limited and may be a general embodiment. In the embodiment shown in Fig. 1, the aerosol generation section 110, the cooling section 120, and the filter section 130 are each illustrated as a single segment, but each section may be composed of a single segment or multiple segments.

[0053] The airflow resistance in the longitudinal direction of each aerosol product 100 is not particularly limited, but from the viewpoint of ease of inhalation, it is usually 10 mmH ２ O or more, 20 mmH ２ It is preferable that the pressure is 30 mmH or more. ２ It is more preferable that the pressure is 100 mmH or more. ２ O or less, 80 mmH ２ It is preferable that the pressure is 60 mmH or less. ２ It is more preferable that the airflow resistance is not more than 0. The airflow resistance can be measured by the same method as the above-mentioned method for measuring the airflow resistance of the segment for an aerosol product.

[0054] The cross-sectional shape of the aerosol product 100 is not particularly limited and may be polygonal, rounded polygonal, circular, elliptical, or the like. In this specification, "cross-section" refers to a surface extending in the X-axis and Y-axis directions in FIG. 1 . The length of the aerosol product 100 in the axial direction is not particularly limited and is, for example, typically 40 mm or more, preferably 45 mm or more, and more preferably 50 mm or more. It is also typically 100 mm or less, preferably 90 mm or less, and more preferably 80 mm or less. The width of the tip 102 of the aerosol product 100 (diameter when the cross-sectional shape is circular) is not particularly limited and is, for example, typically 5 mm or more, and preferably 5.5 mm or more. It is also typically 10 mm or less, preferably 9 mm or less, and more preferably 8 mm or less.

[0055] [Aerosol Generating Unit] The configuration of the aerosol generating unit 110 is not particularly limited and may be a general configuration. For example, a tobacco filler 111 wrapped in cigarette paper 112 may be used.

[0056] The aerosol generating unit 110 may also have a fitting portion for a heater member or the like for heating the aerosol product 100 .

[0057] The length of the aerosol generating section 110 in the longitudinal direction can be changed appropriately according to the size of the product, but is usually 10 mm or more, preferably 12 mm or more, more preferably 14 mm or more, and even more preferably 18 mm or more, and is usually 70 mm or less, preferably 50 mm or less, more preferably 30 mm or less, and even more preferably 25 mm or less.

[0058] The airflow resistance of the aerosol generating unit 110 is usually 0.1 to 20 mmH ２ O / mm, preferably 0.5 to 15 mmH ２ O / mm, more preferably 1 to 10 mmH ２ O / mm.

[0059] Tobacco Filler: The tobacco filler 111 is composed of tobacco shreds or tobacco leaves ground into tobacco powder, which is then homogenized and processed into a sheet (hereinafter simply referred to as a homogenized sheet). The content of dried tobacco leaves contained in the aerosol generating unit 110 is not particularly limited, but examples include 200 mg or more per aerosol generating unit and 800 mg or less per aerosol generating unit, and preferably 250 mg or more per aerosol generating unit and 600 mg or less per aerosol generating unit. This range is particularly suitable for an aerosol generating unit 110 having a circumference of 22 mm and a length of 20 mm.

[0060] The tobacco filler 111 may contain an aerosol base material for generating an aerosol. Examples of the aerosol base material include glycerin, propylene glycol, triacetin, 1,3-butanediol, or a mixture thereof. The content of the aerosol base material in the tobacco filler 111 is typically 5% by mass or more, preferably 10% by mass or more, and typically 50% by mass or less, and preferably 15% by mass or more and 25% by mass or less, based on the total amount of the tobacco filler.

[0061] The tobacco filler 111 may contain a flavoring, and any known flavoring can be used.

[0062] The cigarette paper 112 is a sheet material for wrapping the tobacco filler 111, and its configuration is not particularly limited, and a general one can be used.

[0063] [Cooling Section] The aerosol product 100 may have a cooling section 120, and for example, may further include a cooling section 120 between the aerosol generating section 110 and the filter section 130. The configuration of the cooling section 120 is not particularly limited as long as it has the function of cooling the vapor generated by heating the aerosol generating section 110, and an example of the cooling section 120 is a cardboard processed into a cylindrical or other tubular shape. In this case, the inside of the tube is hollow, and the vapor containing the aerosol base material and tobacco flavor components comes into contact with the air in the hollow and is cooled.

[0064] One embodiment of the cooling unit 120 may be a paper tube formed by processing a single sheet of paper or multiple sheets of paper together into a cylindrical shape. Furthermore, in order to increase the cooling effect by bringing room temperature external air into contact with high-temperature steam, it is preferable that the paper tube or the like has openings for introducing external air around it. Specifically, the cooling unit 120 shown in FIG. 1 is provided with openings 103 for introducing air from the outside. The number of openings 103 in the cooling unit 120 is not particularly limited.

[0065] [Filter Section] The filter section 130 is not particularly limited as long as it functions as a general filter and includes at least one of the specific segments described above. The filter section may be composed of only the specific segment, or may include any other segments. The conditions for the specific segment are described below, but the size and other conditions can also be used for the size of the filter section. In this case, the sheet material or the like included in the specific segment becomes the filter medium 150.

[0066] Typical functions of the filter in the filter section 130 include, for example, adjusting the amount of air mixed in when inhaling aerosols, reducing flavor, and reducing nicotine and tar, but it is not necessary for the filter to have all of these functions. Furthermore, in non-combustion aerosol products, which tend to produce fewer components during use and have a lower tobacco filler filling rate than cigarette products, another important function is to prevent the tobacco filler from falling out while suppressing the filtering function.

[0067] The cross-sectional shape of the filter portion 130 is substantially circular, and the diameter of the circle can be changed as needed to suit the size of the product, but is typically 4.0 mm to 9.0 mm, preferably 4.5 mm to 8.5 mm, and more preferably 5.0 mm to 8.0 mm. The axial length of the filter portion 130 can be changed as needed to suit the size of the product, but is typically 5 mm to 35 mm, and preferably 10.0 mm to 30.0 mm. The shape and dimensions of the filter material can be adjusted as needed so that the shape and dimensions of the filter portion 130 fall within the above ranges. The above size of the filter portion 130 may also be applied as the size of a specific segment.

[0068] The airflow resistance per 120 mm of the axial length of the filter part 130 is not particularly limited, but is usually 40 mmH ２ O or more, 300mmH ２ O or less, 70 mmH ２ O or more, 280mmH ２ It is preferable that the pressure is 90 mmH or less. ２ O or more, 260mmH ２ It is more preferable that it is 0 or less.

[0069] In the example shown in Fig. 1, the filter unit 130 is composed of a single segment (in this case, a specific segment), but it may also be composed of multiple segments. An example of an embodiment in which the filter unit 130 is composed of multiple segments is shown in Fig. 3. In the aerosol production product 100 shown in Fig. 3, the filter unit 130 includes a first filter segment arranged on the upstream side (the aerosol generation unit 110 side) and a second filter segment arranged on the downstream side (the mouthpiece end 101 side). The first filter segment is composed of a filter material 150a wrapped around a filter wrapper 160a, and the second filter segment is composed of a filter material 150b wrapped around a filter wrapper 160b, with the first filter segment and the second filter segment connected and wrapped together by the filter wrapper 160. When the filter unit 130 is composed of multiple segments, for example, a specific segment may be disposed upstream (toward the aerosol generating unit 110) and a mouth-side segment may be disposed downstream of the specific segment (toward the mouth end 101), or an aerosol generating unit segment may be disposed upstream and a specific segment may be disposed downstream of the specific segment. From the perspective of achieving a desired airflow resistance and a comfortable grip, it is preferable that at least one filter segment other than the most upstream segment of the filter unit 130 be a specific segment, and it is more preferable that the most downstream filter segment of the filter unit 130 be a specific segment. Having the most downstream filter segment of the filter unit 130 be a specific segment can also achieve a good appearance. Furthermore, when a specific segment is disposed as the downstream filter segment, the upstream filter segment is preferably a filter segment containing, for example, glassine paper as a filter material. Furthermore, the upstream filter segment may be a filter segment having a hollow portion and containing paper as a filter material on its outer periphery.In addition, when considering the airflow resistance, it is preferable that the filter segments are arranged so that the airflow resistance of the upstream filter segment (e.g., the first filter segment) is smaller than the airflow resistance of the downstream filter segment (e.g., the second filter segment). By arranging the filter segments in this manner, it is possible to obtain a good aerosol delivery and a good appearance.

[0070] The other segment filter part may have segments other than the above-mentioned specific segments (other segments). As the other segments, known filters that can be generally used as filters can be used, and examples thereof include those shown below. The number of other segments is not particularly limited and may be one or two or more. The other segments may be ordinary paper filter segments or cellulose acetate filter segments that use cellulose acetate tow as a filter material.

[0071] When a specific segment is used as the filter segment, the axial length of the specific segment can be appropriately changed according to the size of the product, but is usually 3 mm or more and 35 mm or less, preferably 5 mm or more and 35 mm or less, and more preferably 10 mm or more and 30 mm or less. This range is particularly preferable when the filter unit 130 is used as a single segment. In particular, when the filter unit 130 is composed of multiple segments, the axial length of the specific segment is preferably 3 mm or more and 25 mm or less, and more preferably 5 mm or more and 15 mm or less. The shape and dimensions of the filter material can be appropriately adjusted so that the shape and dimensions of the specific segment fall within the above range.

[0072] The additive release container filter segment (including the specific segment) may contain a crushable additive release container 170 (e.g., a capsule) therein, which includes a crushable outer shell made of gelatin or the like. The additive contained in the capsule may include any additive, but particularly when the additive includes a flavoring, for example, menthol, spearmint, peppermint, fenugreek, clove, medium chain triglycerides (MCT), or a combination thereof.

[0073] [Tipping Paper] The aerosol product 100 may include tipping paper 140 that integrally connects the aerosol generation unit 110, the cooling unit 120, and the filter unit 130 described above. These connections can be made, for example, by applying glue such as vinyl acetate glue to the inner surface of the tipping paper 140, and then wrapping the aerosol generation unit 110, the cooling unit 120, and the filter unit 130 inside. These may also be connected in multiple places using multiple connecting papers. For example, the aerosol generation unit 110 and the cooling unit 120 may be connected in advance with a first connecting paper (first tipping paper), and then the aerosol generation unit 110 and the cooling unit 120 may be connected to the filter unit 130 with a second connecting paper (second tipping paper).

[0074] [Tip Segment] The aerosol product 100 may include components other than those described above. For example, as shown in FIG. 3, the aerosol product 100 may include a tip segment (tip portion) 113 upstream of the aerosol generation unit 110. The tip segment 113 may contain a filler therein and be wrapped with a tip segment wrapper 114. The filler may include cellulose acetate fiber, natural pulp fiber, etc. Preferably, the filler includes paper. The tip segment 113 may further include an aerosol base material, a fragrance, etc. The provision of the tip segment 113 can prevent the filler from spilling out of the aerosol generation unit. In FIG. 3, the aerosol generation unit 110 and the tip segment 113 are connected by being wrapped with tipping paper 140a (first tipping paper). Furthermore, this connected segment, the cooling unit 120, and the filter unit 130 are connected by being wrapped with tipping paper 140b (second tipping paper).

[0075] The cross-sectional shape of the tip segment 113 is substantially circular, and the diameter of the circle can be changed appropriately according to the size of the product, but is usually 3 mm or more and 15 mm or less, and preferably 5 mm or more and 10 mm or less.

[0076] The tip segment 113 is preferably the specific segment described above, from the viewpoint of keeping the airflow resistance of the aerosol product 100 small.

[0077] Another embodiment of the present invention is an aerosol product 100 comprising an aerosol generation section 110 and a filter section 130, and further comprising a tip segment 113 upstream of the generation segment in the airflow direction, the tip segment 113 being the specific segment described above. As described above, the advantage of employing the specific segment as the tip segment 113 is that the airflow resistance of the aerosol product 100 can be maintained low. Hereinafter, the embodiment in which the specific segment is employed for at least a portion of the filter section 130 described above will be referred to as the first embodiment, and the embodiment in which the specific segment is employed as the tip segment 113 according to this embodiment will be referred to as the second embodiment. As can be seen from these embodiments, it is preferable to use the specific segment as at least one of the segments constituting the filter section 130 and at least one of the tip segment 113. By employing such an embodiment, an aerosol product 100 with low airflow resistance can be obtained. Note that the conditions for each segment in the first embodiment can be similarly applied to each segment in the second embodiment. Furthermore, components other than the aerosol generating section 110, the filter section 130, and the tip segment 113 described in the first embodiment can also be employed in the second embodiment.

[0078] <Method for manufacturing an aerosol product> The method for manufacturing the aerosol product 100 according to this embodiment is not particularly limited, and a combination of known methods can be applied. As an example, first, a sheet material such as paper is crimped while being extruded from a roller. Next, the crimped sheet material is rolled up with wrapping paper to produce a rod-shaped specific segment. During the process of producing the specific segment, a flavoring, aerosol base material, etc. may be added as needed. The aerosol-generating segment 110, the cooling section 120, and the specific segment serving as the filter section 130 are then rolled up with tipping paper 140 to produce the aerosol product.

[0079] <Non-combustion aerosol generation system> The aerosol product 100 described above can be used together with a non-combustion aerosol generation device that heats the aerosol product 100. That is, a non-combustion aerosol generation system according to another embodiment of the present invention (also simply referred to as a "non-combustion aerosol generation system") is a non-combustion aerosol generation system including the aerosol product described above and a non-combustion aerosol generation device that heats the aerosol product. The configuration of the non-combustion aerosol generation system is not particularly limited, and can be, for example, as shown in FIG. 4. FIG. 4 is a diagram illustrating the internal structure of a non-combustion aerosol generation system 200. Note that the aerosol-generating heated tobacco article 100 in FIG. 4 is a schematic representation of the aerosol product 100 in FIG. 1.

[0080] The non-combustion aerosol generation system 200 includes an aerosol product 100 and a non-combustion aerosol generation device 30 that heats an aerosol generation section 110 of the aerosol product 100. The aerosol product 100 is accommodated in a storage section 310 through an insertion port 3A of the non-combustion aerosol generation device 30 so as to be freely insertable into and removable from the storage section 310.

[0081] When the non-combustion aerosol generation device 30 is used by a user, the aerosol product 100 is inserted into the storage section 310, and in this state, the heater provided in the storage section 310 is heated to heat the flavor source within the aerosol product 100, thereby generating an aerosol containing components such as tobacco components, which is then inhaled by the user. The heater may directly heat the aerosol generation section 110, or alternatively, the heater may heat the aerosol generation source within the aerosol product 100, thereby supplying the heated aerosol to the aerosol generation section 110, which then further heats the tobacco components and the like within the aerosol generation section 110, thereby providing the aerosol for inhalation by the user. The heater may heat the aerosol generation segment 110 from the outside or from the inside. If a susceptor heated by induction heating is provided within the aerosol generation segment 110, the non-combustion aerosol generation device 30 may be provided with an induction coil instead of a heater.

[0082] The non-combustion aerosol generating device 30 has an outer wall 301 and a housing 31 that is a case for accommodating various components. The housing 31 accommodates a heater 32, a temperature sensor 35, a suction sensor 36, a control unit 37, a power source 38, etc.

[0083] The heating temperature is not particularly limited, but is preferably 400° C. or less, more preferably 150 to 400° C., and even more preferably 200 to 350° C. The heating temperature may be controlled by the control unit upon receiving signals from the temperature sensor 35 and the suction sensor 36.

[0084] In the above description, a heater is used as a means for heating the aerosol product 100, specifically, a mode in which the aerosol product 100 is heated from the outside when the aerosol product 100 is inserted into the non-combustion aerosol generation device 30 has been described. However, the means for heating the aerosol product 100 is not limited to this. For example, a rod-shaped or spindle-shaped heater may be used, and when the aerosol product 100 is inserted into the non-combustion aerosol generation device 30, the heater may be inserted into the aerosol generation section 110 of the aerosol product 100, thereby heating the aerosol product 100 from the inside. Alternatively, an inductor may be provided as the heater, and a susceptor for heating the aerosol source or the like may be introduced into the aerosol generation section 110 of the aerosol product 100.

[0085] The present invention will be explained in more detail by way of examples, but the present invention is not limited to the description of the following examples as long as it does not deviate from the gist of the present invention.

[0086] <Production of Specific Segments> Long rods of specific segments were produced using the materials listed below. Parameters such as basis weight, thickness, and breathability of each sheet material are shown in Table 2. Sheet Material 1: High-breathability paper; Sheet Material 2: High-breathability paper; Sheet Material 3: High-breathability paper; Sheet Material 4: High-breathability paper; Sheet Material 5: Nonwoven fabric; Sheet Material 6: Glassine paper (low-breathability paper); Sheet Material 7: Glassine paper (low-breathability paper); Sheet Material 8: Plain paper; Wrapper: Paper with a basis weight of 27 gsm, a thickness of 43 μm, and a breathability of 0. Using a paper filter manufacturing machine equipped with crimp rollers, the sheet material was unwound at the width shown in Table 2, crimped to the crimp depth shown in Table 2, and wrapped around the crimped sheet material in a wrapper to produce a long rod. Note that CU, which represents the unit of breathability in Table 2, stands for Coresta Unit. This long rod is cut to the length of the sheet material shown in Table 2 to obtain one specific segment.

[0087] <Measurement of Pore Volume> The cumulative pore volume of a specific segment having a pore diameter of 0.5 μm or more and 200 μm or less, the cumulative pore volume of a pore diameter of 70 μm or more and 200 μm or less, the cumulative pore volume of a pore diameter of 0.5 μm or more and less than 70 μm, and the cumulative pore volume were measured by mercury intrusion porosimetry as described in the above method for measuring the cumulative pore volume of a segment for an aerosol product. In these measurements, a mercury intrusion pore volume measuring device (MicroActive AutoPore V 9600 manufactured by Micromeritics) was used. Table 2 shows the ratio of the cumulative pore volume of pores with a diameter of 0.5 μm or more and less than 70 μm and the ratio of the cumulative pore volume of pores with a diameter of 70 μm or more and less than 200 μm to the total cumulative pore volume of pores with a diameter of 0.5 μm or more and less than 70 μm, and the cumulative pore volume of pores with a diameter of 0.5 μm or more and less than 200 μm.

[0088] <Airflow Resistance> In accordance with the ISO standard method (ISO 6565:2015), the airflow resistance of a specific segment was measured using, for example, a filter airflow resistance measuring device manufactured by Cerulean Co., Ltd. The airflow resistance refers to the air pressure difference between the first end face and the second end face when air is flowed at a predetermined air flow rate (17.5 cc / sec) from one end face (first end face) to the other end face (second end face) of the aerosol product 100 in a state where air does not pass through the side faces of the aerosol product 100.

[0089] <Average Channel Size> The average channel size of a specific segment was measured by photographing the end face of the segment with a camera and analyzing the acquired end face image. For the image analysis, a "High-Performance 16x Speed ​​470,000 Pixel Black-and-White Camera CA-H048MX" manufactured by Keyence Corporation was used. Other equipment used was that listed in Table 1 above. Specifically, the image analysis was performed according to the following process flow: (1) capturing an image of the end face perpendicular to the longitudinal direction of the segment, (2) performing shading correction and binarization as preprocessing, and (3) performing blob processing to extract the area of ​​the black mass (corresponding to a channel).

[0090] <Hardness> The hardness of a specific segment was measured using an SODIM-H hardness module according to the method described above in the method for measuring the hardness of a segment for an aerosol product.

[0091] <Air Permeability> The air permeability of the sheet material was measured in accordance with ISO 2965:2009.

[0092] In Table 2, the parts marked with "-" indicate that the measurement was not performed or could not be performed.

[0093]

[0094] Table 1 shows that segments with low airflow resistance can be obtained by satisfying the relationship that the pore volume of pores with diameters of 70 μm or more and 200 μm or less is greater than the pore volume of pores with diameters of 0.5 μm or more and less than 70 μm. When comparing the appearance of high-permeability paper and low-permeability paper, the high-permeability paper with a smaller channel size was better.

[0095] <Reference Experiment 1> Sheet materials were prepared by crimping the above-mentioned sheet material 6 to crimp depths of 0.5 mm, 0.7 mm, and 0.9 mm, and sheet materials were prepared by crimping the above-mentioned sheet material 3 to crimp depths of 0.16 mm, 0.20 mm, 0.30 mm, and 0.35 mm. Specific segments were manufactured using these sheet materials in the same manner as in Example 1, etc., and the average channel size was measured, and the ratio of channel size to number of channels was determined. Figure 5 shows a graph (segment channel size distribution) plotting each measurement data with the average channel size on the horizontal axis and the channel number ratio on the vertical axis. The channel number ratio refers to the ratio of the number of channels having a specific channel size to the total number of channels.

[0096] As can be seen from Figure 5, increasing the crimp depth shifts the peak channel size toward the smaller diameter side. In other words, the average channel size becomes smaller. It can also be seen that the peak channel size is closer to the smaller diameter side for high-permeability paper than for glassine paper.

[0097] REFERENCE SIGNS LIST 100 aerosol-producing article 101 mouth end 102 tip 103 aperture 110 aerosol-generating section 111 tobacco filler 112 cigarette paper 113 tip segment 114 tip segment wrapper 120 cooling section 130 filter section 140, 140a, 140b tipping paper 150, 150a, 150b filter media 160, 160a, 160b filter wrapper 170 additive release container 200 non-combustion aerosol-generating system 30 electrically heated device 31 housing 310 storage section 313 storage cavity 32 heater 35 temperature sensor 36 suction sensor 37 control section 38 power supply

Claims

1. A segment for an aerosol product comprising a sheet material and a wrapper wrapping the sheet material, the segment having pores, the cumulative pore volume of pores with a diameter of 70 μm or more and 200 μm or less being greater than the cumulative pore volume of pores with a diameter of 0.5 μm or more and less than 70 μm.

2. A segment for an aerosol product as described in claim 1, wherein the ratio of the cumulative pore volume of pores with a diameter of 70 μm or more and 200 μm or less to the sum of the cumulative pore volume of pores with a diameter of 70 μm or more and 200 μm or less and the cumulative pore volume of pores with a diameter of 0.5 μm or more and less than 70 μm in the segment is 55% or more.

3. The segment for an aerosol product according to claim 1 or 2, wherein the cumulative pore volume of pores with a diameter of 0.5 μm or more and 200 μm or less is 3.5 mL / g or more and 6.0 mL / g or less.

4. A segment for an aerosol product according to any one of claims 1 to 3, having a hardness of 70.0% or more as measured by the following measurement method. Measurement method: 1) Place the segment to be measured on a substrate with its longitudinal direction horizontal, and measure its height Ds. 2) Use a pressure tool to apply pressure to the side of the segment and compress it. Pressure: 300 g, pressure time: 10 seconds, pressure tool head diameter: φ12 mm 3) Measure the height Dd of the segment after pressure application. 4) Calculate the hardness H (%) using the following formula: H (%) = Dd / Ds × 100 5. Air resistance is 350mmH ２ The segment for an aerosol product according to any one of claims 1 to 4, having a diameter of 0 / 120 mm or less.

6. The average channel size is 0.01 mm. ２ More than 0.20 mm ２ A segment for an aerosol product according to any one of claims 1 to 5, wherein:

7. The segment for an aerosol product according to any one of claims 1 to 6, wherein the air permeability of the sheet material is not less than 7,000 Coresta units and not more than 30,000 Coresta units.

8. A segment for an aerosol product according to any one of claims 1 to 7, wherein the basis weight of the sheet material is not less than 20 gsm and not more than 35 gsm.

9. A segment for an aerosol product according to any one of claims 1 to 8, wherein the sheet material is paper.

10. An aerosol product comprising an aerosol generating section and a filter section, said filter section comprising at least one segment for an aerosol product according to any one of claims 1 to 9.

11. The aerosol production article of claim 10, further comprising a cooling section between the aerosol generation section and the filter section.

12. An aerosol product comprising an aerosol generating section and a filter section, and further comprising a tip segment located upstream of the generating segment in the direction of airflow, the tip segment being a segment according to any one of claims 1 to 9.

13. The aerosol product according to any one of claims 10 to 12, wherein the aerosol product is a non-combustion type aerosol product.

14. A non-combustion aerosol generating system comprising an aerosol product according to any one of claims 10 to 13 and a non-combustion aerosol generating device for heating the aerosol product.

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