Aerosol-generating segment, aerosol-generating article, and non-combustion aerosol-generating system

Abstract

This aerosol-generating segment comprises a sheet material containing a tobacco raw material and has pores, wherein the cumulative pore volume of the aerosol-generating segment for pores having a diameter of 0.5-200 μm is 0.60 mL / g or more.

Description

Aerosol generation segment, aerosol products and non-combustion aerosol generation systems

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

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

[0003] Patent Document 2 describes an embodiment in which a homogenized tobacco sheet is crimped and gathered and filled as a rod (aerosol-generating segment) of such an aerosol product.

[0004] Special table 2015-503335 publication Special table 2014-515274 publication

[0005] However, consumers desire a greater aerosol delivery for a more satisfying draw. Therefore, there is still room for improvement in the detailed configuration of aerosol-producing products and each segment. Increasing the amount of aerosol base or flavoring in the aerosol-generating segment could increase the total aerosol delivery to the user. However, increasing these amounts increases the heat capacity of the aerosol-generating segment, which tends to reduce the aerosol delivery during the initial heating period. Furthermore, non-combustion aerosol-producing products tend to deliver less aerosol during the initial heating period than combustion-type cigarettes.

[0006] Therefore, an object of the present invention is to provide an aerosol-generating segment, an aerosol product, and a non-combustion aerosol-generating system that improve aerosol delivery in the initial stage of heating.

[0007] As a result of intensive research to solve the above problems, the inventors discovered that the above problems can be solved by configuring the aerosol generating segment in an aerosol product in a specific configuration, and arrived at the present invention.

[0008] The gist of the present invention is as follows. [1] An aerosol-generating segment, the aerosol-generating segment comprising a sheet material containing tobacco raw material, the aerosol-generating segment having pores, and the cumulative pore volume of the aerosol-generating segment for pore diameters of 0.5 to 200 μm being 0.60 mL / g or more. [2] The aerosol-generating segment according to [1], wherein the maximum peak in the log differential pore volume distribution of the aerosol-generating segment is in the pore diameter range of 70 to 150 μm. [3] The aerosol-generating segment according to [1] or [2], wherein the maximum peak in the log differential pore volume distribution of the aerosol-generating segment is in the pore diameter range of 70 to 130 μm. [4] The aerosol-generating segment according to any one of [1] to [3], wherein the cumulative pore volume of the aerosol-generating segment for pore diameters of 0.5 μm or more but less than 70 μm is greater than the cumulative pore volume of pore diameters of 70 μm or more but less than 200 μm. [5] The aerosol-generating segment according to any one of [1] to [4], wherein the sheet material contains 50 to 80% by mass of tobacco raw material and 10 to 20% by mass of aerosol base material. [6] The aerosol-generating segment according to any one of [1] to [5], wherein the sheet material contains 3 to 15% by mass of pulp. [7] The aerosol-generating segment according to any one of [1] to [6], wherein the sheet material has a binder content of less than 5% by mass. [8] The aerosol-generating segment according to any one of [1] to [7], wherein the sheet material has an air permeability of 1 to 1,000 Coresta units. [9] The aerosol-generating segment according to any one of [1] to [8], wherein the sheet material has a basis weight of 100 to 350 gsm.

[10] The aerosol-generating segment according to any one of [1] to [9], wherein the sheet material has a basis weight of 100 to 140 gsm.

[11] The aerosol-generating segment according to any one of [1] to [9], wherein the sheet material has a density of 0.60 to 1.50 g / cm ３

[12] The aerosol-generation segment according to any one of [1] to

[10] , wherein the density of the sheet material is 0.60 to 0.79 g / cm ３

[13] The aerosol-generation segment according to any one of [1] to

[12] , wherein the sheet material is crimped, folded in an overlapping manner with the folds approximately parallel to the air passage direction, and wrapped around a wrapper.

[14] The aerosol-generation segment according to any one of [1] to

[13] , wherein the sheet material is a laminated sheet comprising a tobacco layer and a non-tobacco layer.

[15] The aerosol-generation segment according to

[14] , wherein the tobacco layer comprises a tobacco sheet, and the non-tobacco layer comprises paper or a nonwoven fabric.

[16] The aerosol-generation segment according to

[15] , wherein the tobacco sheet has a basis weight of 200 to 320 gsm.

[17] The aerosol-generation segment according to

[15] or

[16] , wherein the paper has a basis weight of 10 to 100 gsm.

[18] An aerosol product comprising the aerosol-generation segment according to any one of [1] to

[17] , a cooling segment, and a filter segment.

[19] The aerosol product according to

[18] , further comprising a tip segment located upstream of the aerosol-generation segment in the airflow direction.

[20] The aerosol product according to

[18] or

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

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

[18] to

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

[0009] According to the present invention, it is possible to provide an aerosol-generating segment, an aerosol product, and a non-combustion aerosol-generating system that improve aerosol delivery in the initial stage of heating.

[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 schematic diagram of a non-combustion aerosol generating system according to an embodiment of the present invention. Figure 4 is a graph showing the log differential pore volume distribution of the aerosol-generating segments prepared in the examples and comparative examples. Figure 5 is a graph showing the cumulative pore volume distribution of the aerosol-generating segments prepared in the examples and comparative examples.

[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 including the numerical values ​​before and after "to" as the lower and upper limits, and "A to B" means a range of A or more and B or less. Furthermore, the expression "A or B" in this specification 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 the X, Y, and Z directions are shown in some of the drawings, the left-right direction of the aerosol product or the non-combustion aerosol generating device into which the aerosol product is inserted is referred to as the X direction, the up-down direction as the Y direction, and the depth direction as the Z direction. These directions are merely illustrative for the sake of convenience and do not limit the elements in the figures. For example, the elements of the non-combustion aerosol generating system are not limited to being arranged in the directions shown in the figures.

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

[0013] <Aerosol product> An aerosol product according to one embodiment of the present invention (hereinafter also simply referred to as "aerosol product") is an aerosol product comprising a specific aerosol-generation segment described below. Note that the aerosol product may also comprise components other than the aerosol-generation segment. One example is an aerosol product comprising a specific aerosol-generation segment described below, a cooling segment, and a filter segment. Details of each segment will be described later. The manner of use of the aerosol product according to this embodiment is not particularly limited, and the aerosol product may be an electrically heated aerosol product, a non-combustion aerosol product, or a cigarette.

[0014] An example of the aerosol product 100 according to this embodiment has a substantially cylindrical rod shape. In the example shown in Figures 1 and 2, the aerosol product 100 includes an aerosol-generation segment 110, a cooling section 120, a filter section 130, and tipping paper 140 that connects these together. The cooling section 120 and the filter section 130 are wrapped around the aerosol-generation segment 110 by the tipping paper 140, thereby connecting them coaxially to the aerosol-generation segment 110. When the aerosol product 100 according to this embodiment is used as a cigarette, it may have a cooling section 120. However, since cigarettes generally do not have a cooling section, it can be used in a form that does not have a cooling section 120 and the aerosol-generation segment 110 extends to the region where the cooling section 120 is present.

[0015] Reference numeral 101 denotes the mouth end of the aerosol production product 100 (filter portion 130). Reference numeral 102 denotes the tip of the aerosol production product 100 opposite the mouth end 101. The aerosol-generation segment 110 is disposed on the tip 102 side of the aerosol production product 100. In the example shown in Figures 1 and 2, the aerosol production product 100 has a substantially constant diameter over the entire length from the mouth end 101 along the longitudinal direction (hereinafter also referred to as the axial direction or Z direction) along the tip 102.

[0016] The configuration of the aerosol production product 100 is not particularly limited and may be any of the general configurations. In the embodiment shown in Figure 1, the aerosol generation segment 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.

[0017] 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 0 or less. The airflow resistance is measured in accordance with the ISO standard method (ISO6565:2015) 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) in a state where air does not pass through the side face of the aerosol product 100. 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 product 100 is proportional within the commonly used length range (5 mm to 200 mm), and if the length of the aerosol product 100 is doubled, the airflow resistance also doubles. The same is true for the airflow resistance described below.

[0018] 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 direction and the Y-axis direction in FIG. 1 . The axial length of the aerosol product 100 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.

[0019] <Aerosol-Generating Segment> The aerosol-generating segment 110 according to one embodiment of the present invention is not particularly limited as long as it comprises a sheet material containing tobacco raw material, the aerosol-generating segment has pores, and the cumulative pore volume of the aerosol-generating segment having pore diameters of 0.5 to 200 μm is 0.60 mL / g or more.

[0020] The pore volume in this specification is obtained by measuring the distribution of pores (pore distribution) having a predetermined range of pore diameters in the aerosol-generation segment using mercury intrusion porosimetry. The term "cumulative pore volume" in this specification refers to the cumulative (integrated) volume of pores having a predetermined range of pore diameters divided by the mass of the aerosol-generation segment. The term "pores" as used here refers primarily to tiny holes in the sheet material packed into the aerosol-generation segment and tiny gaps between sheets that may arise due to the sheet packing state. 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 the sample container, the mercury is injected at a pressure lower than the measurement pressure, and this also injects mercury into relatively large gaps in the aerosol-generation 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."

[0021] 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.

[0022] The measurement equipment and conditions are described later in the Examples. The pore volume in this test method is obtained as the volume per weight of each aerosol-generating 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 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. In addition, the cumulative pore volume can be calculated by integrating the pore volumes at each pore diameter. Hereinafter, unless otherwise specified, "cumulative pore volume" means the integrated value over a pore diameter range of 0.5 to 200 μm.

[0023] The cumulative pore volume of the aerosol-generating segment is preferably 0.65 mL / g or more, more preferably 0.70 mL / g or more, even more preferably 0.80 mL / g or more, and particularly preferably 1.00 mL / g or more. There is no particular upper limit to the cumulative pore volume, but it is typically 3.00 mL / g or less, and may be 2.00 mL / g or less, or 1.50 mL / g or less. Preferred ranges include, for example, 0.65 to 3.00 mL / g, 0.65 to 2.00 mL / g, 0.65 to 1.50 mL / g, 0.70 to 3.00 mL / g, 0.80 to 2.00 mL / g, and 1.00 to 1.50 mL / g.

[0024] The inventors have found that the aerosol delivery in the initial stage of heating can be improved by increasing the cumulative pore volume of the aerosol-generation segment to a predetermined value or more. The inventors speculate that this is because the cumulative pore volume of the aerosol-generation segment optimizes the balance between the heating of the aerosol base by thermal conduction and the vertical (air flow direction) flow of the aerosol base vaporized or aerosolized by heating.

[0025] Furthermore, it is preferable that the maximum peak in the log differential pore volume distribution of the aerosol-generating segment is in the pore diameter range of 70 to 150 μm. Details will be described later in the Examples. The fact that the maximum peak in the log differential pore volume distribution of the aerosol-generating segment is in the pore diameter range of 70 to 150 μm means that the pore size of the aerosol-generating segment is optimal from the viewpoint of the balance between heat conduction and flow, and the effect of improving aerosol delivery in the early stages of heating can be further achieved.

[0026] The maximum peak in the log differential pore volume distribution of the aerosol-generating segment is more preferably in the pore diameter range of 70 to 130 μm, even more preferably in the range of 80 to 120 μm, and especially preferably in the range of 80 to 110 μm.

[0027] The cumulative pore volume of the aerosol-generation segment and the maximum peak in the log differential pore volume distribution can be adjusted, for example, by appropriately adjusting the type, density, and packing amount of the sheet material to be filled. Specifically, the cumulative pore volume tends to increase by selecting a relatively low-density sheet material and increasing the packing amount to the extent that relatively large gaps in the aerosol-generation segment are blocked. Furthermore, the cumulative pore volume also tends to increase by manufacturing the aerosol-generation segment using the preferred manufacturing method described below. Furthermore, the pore diameter at the maximum peak in the log differential pore volume distribution tends to decrease by selecting a relatively low-density sheet material and packing the sheet material densely.

[0028] Furthermore, it is preferable that the cumulative pore volume for pores with a diameter of 0.5 μm or more and less than 70 μm (hereinafter referred to as the small-diameter cumulative pore volume) is larger than the cumulative pore volume for pores with a diameter of 70 μm or more and 200 μm or less (hereinafter referred to as the large-diameter cumulative pore volume). When the small-diameter cumulative pore volume is larger than the large-diameter cumulative pore volume, the effect of improving aerosol delivery at the initial stage of heating is more obtained. This is presumably because the voids ensure the aerosol flow path, and the void pores are not too large, resulting in good thermal conductivity. Therefore, by maintaining the optimal size of the void pores, the heating efficiency of the aerosol base material in the sheet material can be improved.

[0029] The ratio of the cumulative pore volume on the smaller diameter side to the cumulative pore volume on the larger diameter side (cumulative pore volume on the smaller diameter side / cumulative pore volume on the larger diameter side) is preferably 1.0 to 3.0, more preferably 1.2 to 2.5, and even more preferably 1.4 to 2.3. In other words, the proportion of the cumulative pore volume on the smaller diameter side in the cumulative pore volume is preferably 50 to 75%, more preferably 55 to 71%, and even more preferably 58 to 70%.

[0030] As an example, the aerosol-generation segment may be a tobacco filler 111 (hereinafter, the filler containing the sheet material and other materials filled in the aerosol-generation segment 110 may be collectively referred to as "tobacco filler") made of a sheet material containing tobacco raw materials and wrapped in cigarette paper (wrapper) 112. Other materials that may be filled in the aerosol-generation segment 110 include flavorings, aerosol base materials, granules, etc.

[0031] The wrapper 112 around which the aerosol-generation segment is wrapped is preferably coated on the inside. While there are no particular limitations on the coating agent, a coating agent capable of forming a film on the surface of the paper and reducing liquid permeability is preferred. By coating the inside of the wrapper 112, even when the aerosol-generation segment contains a large amount of aerosol base, the penetration of the aerosol base into the wrapper 112 can be suppressed. Examples of coating agents include alginic acid and its salts (e.g., sodium salts); polysaccharides such as pectin; cellulose derivatives such as ethyl cellulose, methyl cellulose, carboxymethyl cellulose, and nitrocellulose; or starch; or derivatives thereof (e.g., ether derivatives such as carboxymethyl starch, hydroxyalkyl starch, and cationic starch; or ester derivatives such as starch acetate, starch phosphate, and starch octenyl succinate). Polysaccharide coatings are particularly preferred.

[0032] The aerosol-generation segment 110 may also have a fitting portion for a heater element or the like for heating the aerosol product 100. The shape of the bottom of the aerosol-generation segment 110 is not limited and may be polygonal, rounded polygonal, circular, elliptical, or the like, and the width is the diameter if the bottom is circular, the major axis if the bottom is elliptical, or the diameter of the circumscribing circle or the major axis of the circumscribing ellipse if the bottom is polygonal or rounded polygonal. The height of the aerosol-generation segment 110 is preferably about 10 to 70 mm, and the width is preferably about 4 to 9 mm.

[0033] The longitudinal length of the aerosol-generating segment 110 can be varied depending on the size of the product, but is typically 5 mm or more, preferably 7 mm or more, and more preferably 10 mm or more. It is typically 70 mm or less, preferably 50 mm or less, more preferably 30 mm or less, and even more preferably 25 mm or less. From the viewpoint of the balance between flavor delivery and aerosol temperature, the ratio of the length of the aerosol-generating segment 110 to the longitudinal length of the aerosol product 100 is typically 10% or more, preferably 20% or more, more preferably 25% or more, and even more preferably 30% or more. It is typically 60% or less, preferably 50% or less, more preferably 45% or less, and even more preferably 40% or less.

[0034] The airflow resistance of the aerosol-generating segment 110 is typically 0.1 mmH ２ O / mm~15mmH ２ O / mm, preferably 0.5 mmH ２ O / mm~13mmH ２ O / mm, more preferably 1 mmH ２ O / mm~10mmH ２ 0 / mm, more preferably 2 mmH ２ O / mm to 7mmH ２ 0 / mm. The end surface porosity of the aerosol-generation segment 110 is usually 10% to 55%, preferably 20% to 45%. When the airflow resistance of the aerosol-generation segment 110 is within this range, the user can enjoy a suitable inhalation response. Furthermore, when the end surface porosity of the aerosol-generation segment 110 is within this range, sufficient aerosol can be generated.

[0035] The airflow resistance of each segment is measured in the same manner as the airflow resistance of the aerosol product 100. The end surface porosity can be calculated as follows: In a cross section perpendicular to the longitudinal axis of the segment, (cross-sectional area of ​​the segment) - (area of ​​the sheet material at the cross section) = (area of ​​the open space) (area of ​​the open space) / (cross-sectional area of ​​the segment) = (end surface porosity).

[0036] <Sheet Material> The sheet material is not particularly limited as long as it contains tobacco raw materials, and known sheet materials can be used. The sheet material may be a reconstituted tobacco sheet, or a sheet (hereinafter simply referred to as a homogenized sheet) made by grinding dried tobacco leaves to an average particle size of 20 μm or more and 200 μm or less to obtain tobacco pulverized material, which is then homogenized and processed into a sheet. Furthermore, a so-called strand type may be used in which a homogenized sheet having a length approximately the same as the longitudinal direction of the aerosol-generating segment 110 is shredded approximately parallel to the longitudinal direction of the aerosol-generating segment 110 and filled into the aerosol-generating segment 110. The content of dried tobacco leaves contained in the aerosol-generating segment 110 is not particularly limited, but may be 200 mg or more and 800 mg or less, with 250 mg or more and 600 mg or less being preferred. This range is particularly suitable for an aerosol-generating segment 110 having a circumference of 22 mm and a length of 20 mm.

[0037] The sheet material may be a laminated sheet comprising a tobacco layer and a non-tobacco layer. The aerosol-generation segment may be, but is not limited to, composed of the laminated sheet, or may further include another sheet other than the laminated sheet. When the other sheet is used, the laminated sheet and the other sheet are both packed in the aerosol-generation segment. The other sheet may be a tobacco sheet, a non-tobacco sheet, a laminated sheet of another composition, or a combination of two or more of these. The non-tobacco sheet may contain a flavoring.

[0038] In the laminate sheet, the tobacco layer and the non-tobacco layer are preferably bonded together. In this specification, "bonded" means that when a 180-degree peel test is conducted on the tobacco layer and the non-tobacco layer in the laminate sheet, the tobacco layer and the non-tobacco layer exhibit a peel strength of 0.13 N / 10 mm or more. When the tobacco layer and the non-tobacco layer are in a sheet form, the proportion of the area of ​​the main surface (upper or lower surface) of the tobacco layer that is in contact with the main surface (upper or lower surface) of the non-tobacco layer is preferably 80 to 100%, more preferably 85 to 100%, and most preferably 90 to 100%, of the total area of ​​the main surface of the tobacco layer.

[0039] In the laminated sheet, the tobacco layer preferably includes a tobacco sheet, and the non-tobacco layer preferably includes paper, a nonwoven fabric, or a combination thereof, and more preferably includes paper. More preferably, the laminated sheet is composed of one or more tobacco layers made of tobacco sheets and one or more non-tobacco layers made of paper, joined together. Examples of tobacco sheets include the homogenized sheet described above. The tobacco layer (or tobacco sheet) preferably includes tobacco powder and glycerin. The tobacco layer (or tobacco sheet) may or may not further include a binder. The composition of the tobacco layer (or tobacco sheet) is not particularly limited, but, for example, the tobacco powder content is preferably 50% by weight or more and 95% by weight or less (dry weight basis) of the total weight of the tobacco layer (or tobacco sheet). Examples of the binder include guar gum, xanthan gum, CMC (carboxymethylcellulose), and CMC-Na (sodium salt of carboxymethylcellulose). The amount of binder is preferably 1% by weight or more and 10% by weight or less (on a dry weight basis) of the total weight of the tobacco layer (or tobacco sheet). The tobacco layer (or tobacco sheet) may further contain other additives. Examples of additives include fillers such as pulp.

[0040] When the sheet material is a laminated sheet, the thickness of the tobacco sheet is not limited, but is preferably 150 μm or more and 1000 μm or less, more preferably 200 μm or more and 600 μm or less, and even more preferably 230 μm or more and 350 μm or less, in view of the balance between heat transfer efficiency and strength. The basis weight of the tobacco sheet is not particularly limited, but is preferably 150 to 320 gsm, more preferably 200 to 300 gsm, and even more preferably 220 to 260 gsm, in view of the delivery amount at the initial stage of heating and the sheet strength described below.

[0041] The shape of the non-tobacco layer is not particularly limited, but a sheet shape is preferred. In this case, the non-tobacco layer can be a non-tobacco sheet. The air permeability of the non-tobacco layer is not particularly limited, but is preferably 3,000 to 30,000 Coresta units, more preferably 5,000 to 25,000 Coresta units, and most preferably 8,000 to 15,000 Coresta units. The air permeability of the non-tobacco layer is preferably greater than the air permeability of the tobacco layer.

[0042] The thickness of the non-tobacco layer (or non-tobacco sheet) is not particularly limited, but from the viewpoint of smoking taste, it is preferably 100 μm or less, and more preferably 30 to 100 μm. The basis weight of the paper used for the non-tobacco layer (or non-tobacco sheet) is not particularly limited, but is preferably 10 to 100 gsm, more preferably 15 to 50 gsm, and even more preferably 20 to 40 gsm.

[0043] The method for filling the aerosol-generation segment 110 with the sheet material is not particularly limited. For example, the sheet material may be wrapped in a wrapping paper (wrapper) 112, or the sheet material may be filled into a cylindrical wrapping paper 112. When the aerosol-generation segment 110 has a substantially rectangular parallelepiped shape with a longitudinal direction, the aerosol-generation segments 110 may be filled so that their longitudinal direction is in an unspecified direction within the wrapping paper 112, or they may be filled so that their longitudinal direction is in the axial direction of the aerosol-generation segment 110 or perpendicular to the axial direction. For example, the sheet material may be cut into widths of 0.5 mm to 2.0 mm (lengths, for example, 5 mm to 40 mm) and filled in a random orientation. Alternatively, the sheet material may be cut into widths of 1.0 mm to 3.0 mm (lengths, for example, 5 mm to 40 mm) and filled in an aligned parallel to the air passage direction. Furthermore, the sheet material may be crimped (processed to create vertical grain) and then gathered. When the aerosol-generating segment 110 is heated, the tobacco components contained in the aerosol-generating segment 110 are vaporized, and these are transferred to the cooling section 120 and the filter section 130 by suction.

[0044] The width of the sheet material depends on the size and shape of the aerosol-generation segment 110, but for example, if the aerosol-generation segment 110 is rod-shaped with a major axis length of 14 mm and a diameter of 7 mm, the width is usually 50 mm to 250 mm, more preferably 700 mm to 200 mm, and even more preferably 100 mm to 160 mm. If the width of the sheet material is within the above range, sufficient aerosol can be generated.

[0045] In particular, it is preferable to crimp the sheet material and then gather-fill it (to provide multiple channels through which air flows vertically). From the viewpoint of balancing air permeability and thermal conductivity, it is preferable that one or more sheet materials are crimped, folded in an overlapping manner so that the folds are approximately parallel to the air permeation direction, and wrapped around the wrapper. This configuration ensures an air flow path in the air permeation direction, allowing for efficient delivery of aerosol to the user. The crimp depth is preferably 0.1 mm to 0.5 mm, more preferably 0.2 to 0.3 mm. Alternatively, the sheet material may be filled in a spiral shape so that the central axis of the vortex is approximately coaxial with the axial direction of the aerosol-generating segment 110.

[0046] The amount of sheet material packed into the aerosol-generation segment 110 depends on the size and shape of the aerosol-generation segment 110. For example, if the aerosol-generation segment 110 is rod-shaped with a major axis length of 14 mm and a diameter of 7 mm, the amount is usually 100 mg to 500 mg, preferably 150 mg to 350 mg, and more preferably 230 mg to 350 mg. The packing density of the sheet material in the aerosol-generation segment 110 is preferably 0.2 g / cm. ３ ~1.0 g / cm ３ , more preferably 0.33 g / cm ３ ~0.76 g / cm ３ , more preferably 0.43 g / cm ３ ~0.69 g / cm ３ When the packing density of the tobacco sheet is within the above range, it is easy to control the cumulative pore volume within a preferred range, and the delivery amount at the initial stage of heating is excellent.

[0047] The proportion of the sheet material in the tobacco packing filled in the aerosol-generation segment 110 is preferably 50 to 100% by mass, and more preferably 80 to 100% by mass. The tobacco packing filled in the aerosol-generation segment 110 may be composed of only the sheet material.

[0048] The basis weight of the sheet material is preferably 100 gsm to 350 gsm. When the sheet material is a single sheet, it is preferably 100 gsm to 140 gsm, and even more preferably 120 gsm to 130 gsm. When the sheet material is a laminated sheet, the basis weight of the sheet material is preferably 220 gsm to 350 gsm, and more preferably 250 gsm to 320 gsm. The thickness of the sheet material is preferably 100 μm to 1000 μm, and more preferably 100 μm to 350 μm. When the sheet material is a single sheet, the thickness of the sheet material is 100 to 200 μm, and even more preferably 150 μm to 170 μm. When the basis weight and thickness of the sheet material are within the above ranges, it is easy to control the cumulative pore volume within a preferred range, and the delivery amount at the initial stage of heating is excellent. Furthermore, the sheet material can be densely packed in the aerosol-generating segment 110, and the strength of the sheet material can be obtained.

[0049] The density of the sheet material is not particularly limited, but is preferably 0.50 to 1.50 g / cm ３ When the sheet material is a single sheet, the density of the sheet material is preferably 0.60 to 0.79 g / cm ３ More preferably, it is 0.65 to 0.77 g / cm ３ When the sheet material is a laminated sheet, the density of the sheet material is 0.80 to 1.50 g / cm ３ is preferably 0.95 to 1.20 g / cm ３ When the density of the sheet material is within the above range, it is easy to control the cumulative pore volume within a preferred range, and the delivery amount at the initial stage of heating is excellent.

[0050] The air permeability of the sheet material is not particularly limited, but is preferably 1 to 1,000 Coresta units. When the sheet material is a single sheet material, the air permeability of the sheet material is more preferably 200 to 800 Coresta units, and even more preferably 400 to 600 Coresta units. When the sheet material is a laminated sheet, the air permeability of the sheet material is preferably 1 to 200 Coresta units, more preferably 2 to 100 Coresta units, and even more preferably 5 to 30 Coresta units. When the air permeability of the sheet material is within the above range, it is possible to ensure the amount of air flowing through the aerosol-generating segment while also ensuring thermal conductivity, and it is also easy to control the cumulative pore volume within a preferred range, resulting in an excellent delivery amount in the initial stage of heating.

[0051] The density, breathability, and basis weight of the sheet material can be adjusted within the above ranges by appropriately selecting the raw materials for the sheet material or adjusting the manufacturing method. For example, the type of pulp used as the raw material for the sheet material, the length and amount of fibers, and the type and amount of filler can be adjusted, and the degree of beating during manufacturing, the papermaking method, and the pressing pressure can also be adjusted. Specific examples include the papers listed in the examples of this specification.

[0052] The air permeability is a value measured in accordance with ISO 2965:2009, and is calculated as the rate at which an area of ​​1 cm is per minute when the differential pressure between the two sides of the paper is 1 kPa. ２ Flow rate of gas passing through (cm ３ 1 C.U. is expressed as cm under 1 kPa. ３ / (min cm ２ )

[0053] The composition of the sheet material is not particularly limited, but it preferably contains 50 to 80 mass % tobacco raw material and 10 to 20 mass % aerosol base material. Here, tobacco raw material refers to components derived from tobacco raw materials, such as tobacco leaves, backbone, and their crushed materials, shredded materials, or extracts.

[0054] The sheet material may contain pulp. The pulp content in the sheet material is preferably 3 to 15% by mass, more preferably 5 to 10% by mass. The sheet material may also contain a binder, but the binder content in the sheet material is preferably less than 5% by mass, more preferably 3% by mass or less, and even more preferably no binder is contained. Examples of binders include guar gum, xanthan gum, CMC (carboxymethyl cellulose), and CMC-Na (sodium salt of carboxymethyl cellulose). By adjusting the composition of the sheet material as described above, a suitable balance between aerosol delivery and tobacco flavor sensation provided to the user can be achieved.

[0055] The sheet material may be a flavor-containing sheet. The flavor-containing sheet can be produced by kneading raw materials including sugars, flavors, emulsifiers, bulking agents, etc. in water to prepare a raw material slurry, spreading the raw material slurry on a substrate, and drying it.

[0056] The aerosol base is a base material that generates an aerosol upon heating. Examples of the aerosol base include glycerin, propylene glycol, triacetin, 1,3-butanediol, or a mixture thereof. Among these, from the viewpoint of the influence on flavor and taste, the sheet material preferably contains at least one selected from the group consisting of glycerin and propylene glycol as the aerosol base, and more preferably contains glycerin. The aerosol base may be incorporated into the sheet material by blending it with other materials such as tobacco raw materials to produce a cast sheet. Alternatively, the aerosol base may be formed into a sheet by papermaking tobacco raw materials and materials such as pulp, and then added to the sheet material. Alternatively, a separate aerosol base may be added to the aerosol-generating segment in addition to the aerosol base contained in the sheet material, or the aerosol base may be blended with a thickening stabilizer to impart viscosity to the sheet material surface.

[0057] Various types of tobacco can be used for the production of sheet materials. Examples include flue-cured tobacco, burley, oriental, native tobacco, other Nicotiana tabacum varieties, Nicotiana rustica varieties, and mixtures thereof. Mixtures can be created by appropriately blending the aforementioned varieties to achieve the desired flavor. Details of the tobacco varieties are disclosed in the "Encyclopedia of Tobacco," published by the Tobacco Research Center on March 31, 2009. There are several conventional methods for producing the homogenized sheet, i.e., grinding tobacco leaves and processing them into a homogenized sheet. The first method is to produce a paper-making sheet using a papermaking process. The second method involves mixing a suitable solvent, such as water, with ground tobacco leaves to homogenize them, then thinly casting the homogenized mixture onto a metal plate or metal plate belt and drying it to produce a cast sheet. The third method involves mixing a suitable solvent, such as water, with ground tobacco leaves to homogenize them, and extruding the mixture into a sheet to produce a rolled sheet. The types of the homogenizing sheets are disclosed in detail in "Encyclopedia of Tobacco, Tobacco Research Center, March 31, 2009."

[0058] <Cigarette Paper> The cigarette paper 112 is a sheet material for wrapping the tobacco filler 111. There are no particular limitations on its composition, and a common one can be used. For example, the base paper used for the cigarette paper 112 can be cellulose fiber paper, and more specifically, hemp, wood, or a mixture thereof. The basis weight of the base paper in the cigarette paper 112 is, for example, typically 30 gsm or more and typically 70 gsm or less. There are no particular limitations on the thickness of the cigarette paper, and from the viewpoints of rigidity, breathability, and ease of adjustment during papermaking, it is preferably 40 μm or more and typically 100 μm or less.

[0059] <Cooling Section> The aerosol product 100 may have a cooling section 120. 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 segment, and an example of the cooling section 120 is a cylindrical or other tubular section made of cardboard. In this case, the inside of the cylinder is hollow, and the vapor containing the aerosol base material and tobacco flavor component is cooled by contact with the air in the hollow.

[0060] 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 pasted 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. The cooling unit 120 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.

[0061] <Filter Section> The configuration of the filter section 130 is not particularly limited as long as it functions as a general filter. For example, an acetate filter can be used in which cellulose acetate tow is used as the filter medium 150 and the filter medium 150 is cylindrically wrapped in a filter wrapper (winding paper) 160. The single filament fineness and total fineness of the cellulose acetate tow are not particularly limited, but when the filter section 130 has a circumference of 22 mm, the single filament fineness is preferably 3 g / 9000 m or more and 20 g / 9000 m or less, and the total fineness is preferably 10,000 g / 9000 m or more and 35,000 g / 9000 m or less. When the filter section 130 is formed by filling cellulose acetate tow, 5 to 10 wt % of triacetin may be added relative to the weight of the cellulose acetate tow to improve filter hardness. Furthermore, the filter section 130 may be configured in such a way that, instead of the cellulose acetate tow as the filter material 150, other alternative filters are used, such as a paper filter filled with sheet-shaped pulp paper as the filter material 150.

[0062] 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 ２O 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.

[0063] When the filter unit 130 includes a center-hole filter and an acetate filter, the center-hole filter and the acetate filter may be connected, for example, by an outer filter wrapper. The outer filter wrapper may be, for example, a cylindrical piece of paper. The aerosol-generation segment 110, the cooling unit 120, and the filter unit 130 to which the center-hole filter and the acetate filter are connected may also be connected, for example, by tipping paper 140. 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 segment 110, the cooling unit 120, and the filter unit 130 to which the center-hole filter and the acetate filter are connected. These may also be connected in multiple places using multiple connecting papers. For example, the aerosol-generation segment 110 and the cooling unit 120 may be connected in advance with a first connecting paper (first tipping paper), and then they may be connected to the filter unit 130 with a second connecting paper (second tipping paper).

[0064] The filter portion 130 may contain therein a crushable additive release container 170 (eg, a capsule) that includes a crushable shell such as gelatin.

[0065] <Method for manufacturing an aerosol product> The method for manufacturing an aerosol product according to this embodiment is not particularly limited, and a combination of known methods can be applied. As an example, first, a sheet material is crimped while being extruded from a roller. An aerosol base material may be additionally applied to the crimped sheet material. Next, the sheet material is rolled up in wrapping paper to produce a rod-shaped aerosol-generation segment 110. The aerosol-generation segment 110, cooling section 120, and filter section 130 are then rolled up in tipping paper 140 to produce the aerosol-generation product. The cooling section 120 and filter section 130 are preferably located downstream of the aerosol-generation segment 110 in the airflow direction.

[0066] Furthermore, the manufacturing process for the aerosol product according to this embodiment can be simplified by directly winding up the sheet material as it is unwound from the roll. While it is thought that relatively large gaps are more likely to form between the sheets than when shredded sheet material is packed, applying appropriate crimping tends to increase the cumulative pore volume of the aerosol-generating segment, which can easily improve the delivery amount during the initial heating period.

[0067] When the sheet material is a laminate sheet, the laminate sheet can be produced by a method of laminating a non-tobacco layer when forming a tobacco layer, thereby forming a laminate sheet simultaneously with the formation of the tobacco layer, or a method of laminating an already formed tobacco layer and a non-tobacco layer, among which production by a method of forming a laminate sheet simultaneously with the formation of the tobacco layer is preferred. The method of forming a laminate sheet simultaneously with the formation of the tobacco layer is preferably produced by a method comprising step 1 of preparing a mixture containing the components of the tobacco layer, step 2 of laminating a non-tobacco layer onto the mixture, and step 3 of forming a laminate sheet simultaneously with the formation of a sheet from the mixture.

[0068] (1) Step 1 The mixing can be carried out by a known method. For example, the components can be mixed in a mixer or the like to prepare a mixture.

[0069] (2) Step 2 It is preferable to form a laminate of the mixture and the non-tobacco layer by overlaying a non-tobacco layer on the mixture obtained in step 1.

[0070] (3) Step 3 Sheeting can be carried out by known methods. For example, sheeting can be carried out using a casting method or a rolling method. In the casting method, the mixture is cast onto a substrate, and a non-tobacco layer is superimposed on the mixture to form a laminated wet sheet, or the mixture can be cast onto a non-tobacco layer to form a laminated wet sheet. The laminated wet sheet is then dried to obtain a laminated sheet of tobacco and non-tobacco layers. The drying temperature is preferably 50 to 100°C. The tobacco layer sheet obtained by this method is also called a "cast sheet." A step of pressing the laminated wet sheet with a roll may also be provided.

[0071] In the rolling method, the laminate of the mixture and the non-tobacco layer is passed through a pair of rollers using a calender (for example, manufactured by Yuri Roll Machine Co., Ltd.) until it reaches a predetermined thickness (more than 100 μm), and then pressed to obtain a laminate of the wet sheet and the non-tobacco layer. Pressing with the rollers can be carried out multiple times.

[0072] The laminate is then dried using a forced-air dryer. The drying temperature is preferably 50 to 100°C, and the drying time can be 1 to 2 minutes. By drying in this manner, a laminated sheet of tobacco and non-tobacco layers is obtained.

[0073] The aerosol-producing product 100 may include components other than those described above. For example, it may further include a tip segment (not shown) located upstream of the aerosol-generating segment 110 in the airflow direction (opposite the mouth end). The tip segment may contain a filler therein and be wrapped with a tip segment wrapper. The filler may include cellulose acetate fiber, natural pulp fiber, etc. Preferably, the filler includes paper. The tip segment may further include an aerosol-generating substrate or a flavoring.

[0074] <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 (also simply referred to as a "non-combustion aerosol generation system") according to another embodiment of the present invention is a non-combustion aerosol generation system that includes 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. 3. FIG. 3 is a diagram illustrating the internal structure of a non-combustion aerosol generation system 200. Note that the aerosol product 100 in FIG. 3 is a schematic representation of the aerosol product 100 in FIG. 1.

[0075] 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 segment 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.

[0076] When a user uses the non-combustion aerosol generation device 30, the aerosol product 100 is inserted into the storage section 310. In this state, the heater provided in the storage section 310 is heated, which heats the flavor source within the aerosol product 100, generating an aerosol containing components such as tobacco components, which the user can inhale. The heater may directly heat the aerosol generation segment 110, or alternatively, the heater may heat the aerosol generation source within the aerosol product 100, supplying the heated aerosol to the aerosol generation segment 110, which then heats the tobacco components and other components within the aerosol generation segment 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.

[0077] 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.

[0078] 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 37 upon receiving signals from the temperature sensor 35 and the suction sensor 36.

[0079] 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 segment 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 a flavor source or the like may be introduced into the aerosol generation segment 110 of the aerosol product 100.

[0080] 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.

[0081] <Production of Aerosol-Generating Segments> Aerosol-generating segments according to Examples and Comparative Examples were produced using the materials described below. (Example 1) Sheet material: a paper-made sheet with a basis weight of 123 gsm and a thickness of 162 μm, containing 75% by weight of tobacco raw material, 10% by weight of pulp, and 15% by weight of glycerin. Wrapper: a polysaccharide-coated paper with a basis weight of 43 gsm and a thickness of 45 μm. The aerosol-generating segments were produced using a sheet tobacco rolling machine. The sheet was extruded through a crimping roller and crimped, then gathered and wrapped with a wrapper to produce a cylindrical aerosol-generating segment 1 with a length of 12 mm and a diameter of 7 mm. The sheet was crimped and folded in layers with the folds approximately parallel to the airflow direction. The width of the sheet material was 145 mm, and the crimp depth was 0.3 mm. The air permeability of the sheet material was 516 Coresta units and the density was 0.76 g / cm. ３ The packing density of the sheet material in the aerosol-generation segment 1 is 0.46 g / cm ３ , the airflow resistance per unit length is 3.6 mmH ２ The viscosity was 0 / mm.

[0082] Example 2 In Example 2, an aerosol-generating segment 2 was produced in the same manner as in Example 1, except that crimping was not performed. The airflow resistance per unit length was 0.5 mmH. ２ The viscosity was 0 / mm.

[0083] (Example 3) A tobacco sheet raw material containing 86% by mass of tobacco raw material, 0.5% by mass of binder, and 13.5% by mass of glycerin was layered on top of paper. This was rolled using a roll to form a laminated sheet in which the tobacco sheet constituting the tobacco layer and the paper constituting the non-tobacco layer were bonded together. The paper used was a laminated paper with a basis weight of 25 gsm, a thickness of 71 μm, and an air permeability of 12,000 Coresta units. This laminated sheet was used as the sheet material and wrapped in a wrapper in the same manner as in Example 1, except that the crimp depth was 0.1 mm, to produce an aerosol-generating segment 3. The width of the sheet material was 99 mm, the air permeability of the sheet material was 11 Coresta units, and the density was 1.01 g / cm. ３ The packing density of the sheet material in the aerosol-generating segment 3 is 0.69 g / cm ３ , the airflow resistance per unit length is 3.9 mmH ２ The viscosity was 0 / mm.

[0084] Example 4 An aerosol-generating segment 4 was produced in the same manner as in Example 3, except that the crimp depth was 0.25 mm. The airflow resistance per unit length was 9.7 mmH. ２ The viscosity was 0 / mm.

[0085] Example 5 An aerosol-generating segment 5 was produced in the same manner as in Example 3, except that the tobacco sheet material was formulated to contain 88% by mass of tobacco material and 12% by mass of glycerin, the width of the sheet material was 77 mm, and the crimp depth was 0.3 mm. The air permeability of the sheet material was 11 Coresta units and the density was 1.05 g / cm. ３ The packing density of the sheet material in the aerosol-generating segment 5 is 0.62 g / cm ３ , the airflow resistance per unit length is 6.9 mmH ２ The viscosity was 0 / mm.

[0086] Comparative Example 1: In Comparative Example 1, an aerosol-generating segment C1 was produced in the same manner as in Example 1, except that the sheet material was changed to the following sheet material, the width of the sheet material was 95 mm, and the crimp depth was 0.2 mm. Sheet material: A rolled sheet with a basis weight of 200 gsm, a thickness of 249 μm, and a blend of 76% by mass of tobacco raw material, 6% by mass of pulp, 6% by mass of binder, and 12% by mass of glycerin. The sheet material had an air permeability of 0 Coresta units and a density of 0.80 g / cm. ３ The packing density of the sheet material in the aerosol-generating segment 3 is 0.49 g / cm ３ , the airflow resistance per unit length is 0.9 mmH ２ The viscosity was 0 / mm.

[0087] Comparative Example 2: In Comparative Example 2, an aerosol-generating segment C2 was produced in the same manner as in Example 1, except that the sheet material was changed to the following sheet material, the width of the sheet material was 150 mm, and the crimp depth was 0.2 mm. Sheet material: Cast sheet with a basis weight of 150 gsm, a thickness of 155 μm, and a blend of 78% by weight of tobacco raw material, 5% by weight of pulp, 5% by weight of binder, and 12% by weight of glycerin. The sheet material had an air permeability of 0 Coresta units and a density of 0.97 g / cm. ３ The packing density of the sheet material in the aerosol-generating segment 4 is 0.58 g / cm ３ , the airflow resistance per unit length is 1.3 mmH ２ The viscosity was 0 / mm.

[0088] <Measurement of Pore Volume> The pore volume of each aerosol-generation segment prepared in the examples and comparative examples was measured by mercury intrusion porosimetry. A mercury intrusion pore volume measuring device (MicroActive AutoPore V 9600 manufactured by Micromeritics) was used for the measurement, and mercury pressures were measured from 1.07 to 423.15 psia. The mercury contact angle θ was set to 140° and the surface tension σ to 480 dynes / cm, and the pore distribution was calculated from the measurement results using the accompanying software. After obtaining the pore volume per weight of each aerosol-generation segment, the differential pore volume dV was divided by the logarithmic difference value d (logD) of the pore diameter, and the log differential pore volume was plotted on the vertical axis, with the pore diameter plotted on the horizontal axis. The graph of log differential pore volume shown in Figure 4 was obtained. The pore diameter at which the maximum peak exists in the log differential pore volume distribution refers to the pore diameter (horizontal axis) at which the log differential pore volume (vertical axis) in the graph shown in FIG. 4 has the largest value.

[0089] The cumulative pore volume was calculated by integrating the obtained pore volumes. The cumulative pore volume distribution was obtained by integrating from the larger diameter side within the pore diameter range of 0.5 to 200 μm and then integrating within the desired pore diameter range (horizontal axis). The cumulative pore volume distribution of each aerosol-generating segment prepared in the examples and comparative examples is shown in FIG. 5. Note that in this cumulative pore volume distribution, the pore diameters were integrated from the larger diameter side within the pore diameter range of 0.5 to 200 μm.

[0090] <Evaluation of Initial Delivery Amount> The aerosol-generating segments produced in each Example and Comparative Example were arranged in a line in the order of tip segment, aerosol-generating segment, cooling section, and filter section, in order from farthest from the mouth end, and then wrapped up in tipping paper to produce aerosol product products 1 to 5 and C1 and C2. The tip segment was filled with paper and was 8 mm long and 7 mm in diameter. The cooling section was a hollow tube 20 mm long. The filter section was filled with a paper filter and was 20 mm long.

[0091] Next, the amount of flavor component delivered from each prepared aerosol product was evaluated by the following method. Each aerosol product was inserted into an electric heating device (PloomX, manufactured by Japan Tobacco Inc.), and the device was turned on. The smoking test began once the device was ready for smoking. The smoking test was performed using a Borgwald single-puff automatic smoking machine, with 11 puffs of 55 mL / 2 sec every 30 sec. The aerosol was collected with a Cambridge filter every puff. After the smoking test, each Cambridge filter and aerosol-generating segment were extracted with 10 mL of ethanol, and the amount of delivered flavor component was measured by GC-MS. The amount of flavor component measured from each Cambridge filter was calculated by adding up the amount of flavor component from 1 to 4 puffs to determine the initial delivery amount. The data and evaluation results of the aerosol-generating segments for each Example and Comparative Example are summarized in Table 1.

[0092]

[0093] The above results clearly demonstrate that the aerosol product comprising the aerosol-generating segment according to this embodiment has excellent initial delivery.

[0094] This application claims priority based on International Patent Application No. PCT / JP2024 / 032277, filed September 9, 2024, the entire contents of which are incorporated herein by reference.

[0095] REFERENCE SIGNS LIST 100 aerosol-producing article 101 mouth end 102 tip 103 aperture 110 aerosol-generating segment 111 tobacco filler 112 cigarette paper 120 cooling section 130 filter section 140 tipping paper 150 filter medium 160 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

an aerosol-generating segment, the aerosol-generation segment comprises a sheet material containing tobacco material; the aerosol-generation segment has pores; the cumulative pore volume of the aerosol-generating segment having pore diameters of 0.5 to 200 μm is 0.60 mL / g or more; Aerosol generation segment.

2. The aerosol-generation segment according to claim 1, wherein the maximum peak in the log differential pore volume distribution of the aerosol-generation segment is in the pore diameter range of 70 to 150 μm.

3. The aerosol-generation segment according to claim 1, wherein the maximum peak in the log differential pore volume distribution of the aerosol-generation segment is in the pore diameter range of 70 to 130 μm.

4. The aerosol-generation segment according to claim 1, wherein the cumulative pore volume of the aerosol-generation segment having a pore diameter of 0.5 μm or more but less than 70 μm is greater than the cumulative pore volume of the pore diameter of 70 μm or more but less than 200 μm. 　 The sheet material is Contains 50 to 80% by mass of tobacco raw material, Contains 10 to 20% by mass of an aerosol base material; An aerosol-generation segment according to any one of claims 1 to 4. 　 An aerosol-generation segment according to any one of claims 1 to 5, wherein the sheet material contains 3 to 15% pulp. 　 An aerosol-generation segment according to any one of claims 1 to 6, wherein the sheet material has a binder content of less than 5% by weight. 　 An aerosol-generation segment according to any one of claims 1 to 7, wherein the sheet material has an air permeability of from 1 to 1000 Coresta units. 　 An aerosol-generation segment according to any preceding claim, wherein the sheet material has a basis weight of from 100 to 350 gsm. 　 An aerosol-generation segment according to any preceding claim, wherein the sheet material has a basis weight of between 100 and 140 gsm. 　 The density of the sheet material is 0.60 to 1.50 g / cm ３ 11. An aerosol-generation segment according to any one of claims 1 to 10, wherein 　 The density of the sheet material is 0.60 to 0.79 g / cm ３ 12. An aerosol-generation segment according to any one of claims 1 to 11, wherein 　 13. The aerosol-generation segment according to claim 1, wherein the sheet material is crimped, folded in an overlapping manner with the folds approximately parallel to the air passage direction, and wrapped around a wrapper. 　 An aerosol-generation segment according to any preceding claim, wherein the sheet material is a laminated sheet comprising a tobacco layer and a non-tobacco layer. 　 the tobacco layer comprises a tobacco sheet; 15. The aerosol-generation segment of claim 14, wherein the non-tobacco layer comprises paper or a nonwoven fabric.

16. The aerosol-generation segment of claim 15, wherein the tobacco sheet has a basis weight of 200 to 320 gsm.

17. An aerosol-generation segment according to claim 15 or 16, wherein the paper has a basis weight of between 10 and 100 gsm.

18. An aerosol-generation segment according to any one of claims 1 to 17. Cooling segment, and Filter Segments An aerosol product comprising:

20. The aerosol production article of claim 18, further comprising a tip segment upstream of the aerosol-generation segment in the direction of airflow.

20. The aerosol product according to claim 18 or 19, wherein the aerosol product is a non-combustion type aerosol product. 　 A non-combustion aerosol generating system comprising the aerosol product according to any one of claims 18 to 20 and a non-combustion aerosol generating device that heats the aerosol product.

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