Aerosol-generating segments and aerosol-generating items

Abstract

As an aerosol generating segment comprising a sheet material and an aerosol base material, the sheet material comprises pulp, and the pore volume of the aerosol generating segment is 2.0 ml / g or more.

Description

Technology Field

[0001] The present invention relates to an aerosol-generating segment and an aerosol-generating article. Background Technology

[0002] An aerosol generating article is known that comprises a cigarette stick formed by filling a cigarette filler containing tobacco raw materials (e.g., cut tobacco, tobacco granules, molded cigarette sheets, etc.) and an aerosol base (glycerol, propylene glycol, etc.) into a packaging paper (e.g., see Patent Document 1). This type of aerosol generating article constitutes a non-combustible aerosol generating article of the type that delivers an aerosol formed in the cigarette filler to a user by heating the cigarette filler with an electric heater of a heating device without burning the cigarette filler.

[0003] In addition, there is a form of aerosol generating article configured by filling different segments with tobacco raw material and an aerosol base, and then combining the segments together. Patent Document 2 discloses an aerosol generating article in which, for example, a segment including an aerosol base, a segment including a tobacco component, a segment including a cooling element, and a segment including a filter element are connected together.

[0004] Accordingly, segments performing different roles are connected together, and various studies have been conducted on the configuration of each segment according to the role of the segment. Patent Document 3 discloses a technical concept in which, for example, a plurality of channels through which air circulates in the longitudinal direction (air circulation direction) are provided by packing a sheet-type base in a gathered form in an aerosol generating segment including an aerosol base, thereby enabling the aerosol to be efficiently delivered to the user. Prior art literature

[0005] Patent Document 1: JP 2015-503335 A Patent Document 2: JP 2023-512897 A Patent Document 3: JP 2023-086935 A The problem to be solved

[0006] However, users desire to enjoy a larger volume of aerosol delivery to achieve a more satisfying inhalation response. To this end, there is still room to improve the finer details of the composition of the aerosol-generating article and each of the internal segments.

[0007] Accordingly, the problem solved by the present invention is to provide an aerosol generating segment and an aerosol generating article that enable aerosols to be delivered more efficiently to a user. means of solving the problem

[0008] As a result of thorough research to solve the above problem, the inventors have arrived at the present invention by discovering that the problem can be solved by a specific configuration of an aerosol-generating segment within an aerosol-generating article.

[0009] The gist of the present invention is as follows.

[0010] [1] As an aerosol generating segment,

[0011] Includes sheet material and aerosol base, but,

[0012] The sheet material contains pulp, and

[0013] The aerosol generating segment is an aerosol generating segment having a pore volume of 2.0 ml / g or more.

[0014] [2] In [1], the sheet material is an aerosol-generating segment having a density of 0.6 g / cm³ or less.

[0015] [3] In [1] or [2], the sheet material is an aerosol-generating segment having a permeability of 1300 CORESTA units or more.

[0016] [4] In any one of [1] to [3], the sheet material is an aerosol-generating segment having a drainability of 700 ml or more.

[0017] [5] In any one of [1] to [4], the sheet material has a basis weight of 50 gsm or less, an aerosol generating segment.

[0018] [6] In any one of [1] to [5], the aerosol base is in gel form at 25°C, an aerosol generating segment.

[0019] [7] In any one of [1] to [6], the aerosol base has a viscosity of 4000 mPa·s or more at 25°C, an aerosol generating segment.

[0020] [8] An aerosol generating segment comprising, in any one of [1] to [7], a wrapper having an inner surface in contact with a sheet material, wherein the wrapper comprises a coating agent on the inner surface.

[0021] [9] In [8], the coating agent is an aerosol-generating segment containing polysaccharides.

[0022]

[10] In any one of [1] to [9], one or more of the sheet materials are an aerosol generating segment that is folded over and packed so that the fold portion is substantially parallel to the direction of airflow.

[0023]

[11] An aerosol generating segment in any one of [1] to

[10] , wherein the end surface porosity of the aerosol generating segment is 80% or less.

[0024]

[12] An aerosol generating segment that does not contain tobacco material in any one of [1] to

[11] .

[0025]

[13] An aerosol generating segment comprising a plurality of channels penetrating in the direction of airflow in any one of [1] to

[12] , wherein the average cross-sectional area per channel at the end face of the aerosol generating segment is 0.15 mm² or less.

[0026]

[14] An aerosol generating article comprising an aerosol generating segment according to any one of [1] to

[13] .

[0027]

[15]

[14] In the case of an aerosol generating article, the tip-end segment is included upstream of the aerosol generating segment in the direction of the airflow. Effects of the invention

[0028] The present invention makes it possible to provide an aerosol generating segment, an aerosol generating article, and an electric heating aerosol generating system that provide excellent aerosol delivery to a user. Brief explanation of the drawing

[0029] [Fig. 1] is a schematic diagram of an aerosol-generating article according to an embodiment of the present invention. [Fig. 2] is a schematic cross-sectional view of an aerosol-generating article according to an embodiment of the present invention. [Fig. 3] is a schematic diagram of an electric heating aerosol generating system according to an embodiment of the present invention. [Fig. 4] is a schematic diagram illustrating a variation of the arrangement of each segment. [Fig. 5] is a schematic diagram illustrating a variation of the arrangement of each segment. [Fig. 6] is a schematic diagram illustrating a variation of the arrangement of each segment. [Fig. 7] is a schematic diagram illustrating a variation of the arrangement of each segment. [Fig. 8] is a schematic diagram illustrating a variation of the arrangement of each segment. [Fig. 9] is a graph showing the log-differential pore volume distribution of aerosol-generating segments 1 to 4 generated in the examples and comparative examples. [Fig. 10] is a graph showing the cumulative pore volume distribution of aerosol-generating segments 1 to 4 generated in the examples and comparative examples. [Fig. 11] is a graph showing the results of an evaluation of aerosol delivery of aerosol generation segments 1 to 4 generated in the examples and comparative examples. [Fig. 12] is a graph showing the log-differential pore volume distribution of aerosol generation segments 5 and 16 generated in the example. [Fig. 13] is a graph showing the cumulative pore volume distribution of aerosol-generating segments 5 and 16 generated in the example. Specific details for implementing the invention

[0030] Embodiments of the present invention will be described in detail below, but such description is an example (representative example) of the embodiments of the present invention, and the present invention is not limited to the contents of these descriptions within the scope of the present invention.

[0031] In this specification, a numerical value range indicated by "to" means a range that includes the numerical values ​​provided before and after "to" as lower and upper limits; and "A to B" means greater than or equal to A and less than or equal to B.

[0032] Additionally, the expression "A or B" in this specification may also be understood as "at least one selected from the group consisting of A and B."

[0033] Additionally, while some embodiments will be described in this specification, various conditions of each embodiment may be applied to these embodiments within the applicable scope.

[0034] Additionally, the drawings are illustrated in the X, Y, and Z directions, where the X direction is the transverse direction, the Y direction is the vertical direction, and the Z direction is the depth direction of the aerosol generating article or the electric heating aerosol generating device into which the aerosol generating article is inserted. These directions are provided merely as examples for convenience of explanation and do not limit the elements of the drawings. For example, the elements of the electric heating aerosol generating system are not limited to the arrangement directions shown in the drawings.

[0035] An aerosol-generating article according to this embodiment will be described below with reference to the drawings, but the embodiment is not limited to this type.

[0036] Although embodiments and the like are described in this specification with reference to the drawings, the dimensions, materials, shapes, and relative positions of the components provided in the description of the embodiments and drawings are merely examples.

[0037] Aerosol-generating items

[0038] An aerosol-generating article according to an embodiment of the present invention (hereinafter also simply referred to as "aerosol-generating article") comprises a specific aerosol-generating segment to be described in detail later.

[0039] It should be noted that the aerosol-generating article may also include components other than the aerosol-generating segment.

[0040] There are no specific restrictions on the type of use of the aerosol generating article according to the embodiment, and it may be an electric heating type aerosol generating article or a non-combustion type aerosol generating article.

[0041] The aerosol generating article (100) according to the present embodiment may substantially be in the form of a cylindrical rod. In the example illustrated in FIGS. 1 and 2, the aerosol generating article (100) comprises an aerosol generating segment (110), a cooling section (120), a filter section (130), and a tipping paper (140) that integrally combines these components. The cooling section (120) and the filter section (130) are coaxially coupled to the aerosol generating segment (110) by being wrapped together with the aerosol generating segment (110) by the tipping paper (140).

[0042] Reference numeral (101) indicates the mouthpiece end of the aerosol generating article (100) (filter part (130)). Reference numeral (102) indicates the tip end of the aerosol generating article (100) on the side opposite to the mouthpiece end (101). An aerosol generating segment (110) is positioned on the tip end (102) side of the aerosol generating article (100). In the example illustrated in FIGS. 1 and 2, the aerosol generating article (100) has a substantially constant diameter along its entire length in the longitudinal direction (hereinafter also referred to as the axial direction or Z direction) from the mouthpiece end (101) to the tip end (102).

[0043] There are no special restrictions on the composition of the aerosol generating article (100), and it may take a general form. In the type illustrated in FIG. 1, the aerosol generating segment (110), the cooling section (120), and the filter section (130) are each illustrated as a single segment, but each of these parts may be formed by a single segment or by multiple segments.

[0044] Although the airflow resistance in the longitudinal direction per aerosol generating article (100) is not particularly limited, for ease of inhalation, the airflow resistance is generally 10 mmH2O or more, preferably 20 mmH2O or more, more preferably 30 mmH2O or more, and also generally 100 mmH2O or less, preferably 80 mmH2O or less, more preferably 60 mmH2O or less. The airflow resistance is measured, for example, by using a filter airflow resistance measuring instrument manufactured by Cerulean according to the ISO standard method (ISO 6565:2015). The airflow resistance represents the difference in air pressure between one end surface (first end surface) and another end surface (second end surface) when air flows from the first end surface to the second end surface at a predetermined air flow rate (17.5 cc / min) without passing through the side of the aerosol generating article (100). The unit is generally expressed in mmH2O. The relationship between airflow resistance and the aerosol generating article (100) is known to be proportional over a normal length range (length from 5 to 200 mm), and when the length of the aerosol generating article (100) is doubled, the airflow resistance of the aerosol generating article is also doubled. This applies equally to the airflow resistance described below.

[0045] There are no special restrictions on the cross-sectional shape of the aerosol-generating article (100), and it may be a polygon, a rounded polygon, a circle, or an ellipse, etc. There are no special restrictions on the axial length of the aerosol-generating article (100), and it is, for example, generally 40 mm or more, preferably 45 mm or more, more preferably 50 mm or more. In addition, the length is generally 100 mm or less, preferably 90 mm or less, more preferably 80 mm or less. There are no special restrictions on the width (diameter when the cross-sectional shape is circular) of the tip end (102) of the aerosol-generating article (100), and it is, for example, generally 5 mm or more and preferably 5.5 mm or more. In addition, the width (diameter) is generally 10 mm or less, preferably 9 mm or less, more preferably 8 mm or less.

[0046] <Aerosol generation segment>

[0047] There are no special limitations on the aerosol generating segment (110) according to the embodiment of the present invention, as long as the aerosol generating segment (110) comprises a sheet material and an aerosol base, the sheet material comprises pulp, and the aerosol generating segment has a pore volume of 2.0 ml / g or more.

[0048] The pore volume of the aerosol-generating segment as mentioned herein is defined as the value obtained by dividing the cumulative volume of pores having a size of 0.004 to 200 μm by the mass of the aerosol-generating segment when measured by mercury intrusion porosimetry. Specific measurement methods will be described later in the examples.

[0049] The pore volume of the aerosol-generating segment is preferably 2.5 ml / g or more, more preferably 3.5 ml / g or more, even more preferably 3.9 ml / g or more, and particularly preferably 4.5 ml / g or more.

[0050] There is no special limit on the upper limit of the pore volume, and the pore volume is generally 15.0 ml / g or less, preferably 10.0 ml / g or less, more preferably 8.0 ml / g or less, and particularly preferably 5.0 ml / g or less.

[0051] Examples of preferred ranges that may be mentioned include 2.0 to 15.0 ml / g, 2.5 to 15.0 ml / g, 2.0 to 10.0 ml / g, 2.5 to 10.0 ml / g, 2.0 to 8.0 ml / g, 2.5 to 8.0 ml / g, 2.0 to 5.0 ml / g, 2.5 to 5.0 ml / g, 3.0 to 15.0 ml / g, 3.5 to 10.0 ml / g, 3.9 to 8.0 ml / g, and 4.5 to 5.0 ml / g, etc.

[0052] The inventors have discovered that aerosol delivery is increased when an aerosol-generating segment has a pore volume greater than a predetermined value.

[0053] Although the exact reason for this is not clear, the inventor hypothesizes that when the pore volume is greater than a predetermined value, an optimal balance is achieved between the generation of aerosols by heat conduction and the circulation of the generated aerosols in the longitudinal direction (air circulation direction).

[0054] The pore volume of the aerosol-generating segment can be adjusted, for example, by appropriately adjusting the type, density, and packing amount of the sheet material packed inside.

[0055] For example, the aerosol generating segment may use a sheet material wrapped in a wrapper (112).

[0056] Additionally, the aerosol generating segment (110) may include a matching portion that is matched with a heating member, etc., for heating the aerosol generating article (100).

[0057] There are no restrictions on the shape of the bottom surface of the aerosol generating segment (110), and it may be a polygon, a rounded polygon, a circle, or an ellipse, etc., where the width is the diameter when the bottom surface is a circle, the major axis when the bottom surface is an ellipse, and the diameter of the circumscribed circle or the major axis of the circumscribed ellipse when the bottom surface is a polygon or a rounded polygon. The height of the aerosol generating segment (110) is preferably about 10 to 70 mm, and the width is preferably about 4 to 9 mm.

[0058] The length of the aerosol generating segment (110) in the longitudinal direction can be appropriately varied according to the size of the product, but is generally 5 mm or more, preferably 7 mm or more, more preferably 10 mm or more, and generally 50 mm or less, preferably 30 mm or less, more preferably 20 mm or less. In addition, the ratio of the length of the aerosol generating segment (110) to the length of the aerosol generating article (100) in the longitudinal direction is generally 5% or more, preferably 10% or more, more preferably 20% or more, more preferably 30% or more, in terms of the delivered flavor amount and aerosol temperature balance, and is also generally 50% or less, preferably 40% or less, more preferably 35% or less.

[0059] The airflow resistance of the aerosol generating segment (110) in the direction of the airflow is generally 10 mmH2O / mm to 50 mmH2O / mm, preferably 15 mmH2O / mm to 40 mmH2O / mm, more preferably 20 mmH2O / mm to 35 mmH2O / mm.

[0060] The end face porosity of the aerosol generating segment (110) is preferably 80% or less. The lower limit is not particularly limited and is generally 30% or more. The end face porosity is more preferably 35% to 70%, particularly preferably 45% to 60%.

[0061] When the aerosol generating segment (110) has airflow resistance within the above range, the user can be provided with a suitable inhalation response.

[0062] Additionally, sufficient aerosol can be generated when the end surface void ratio of the aerosol generating segment (110) is within the above range.

[0063] The airflow resistance of each segment is measured by the same method as the airflow resistance of the aerosol generating article (100).

[0064] The porosity of the end face can be determined as follows.

[0065] At the cross-section of the end portion of the segment perpendicular to the longitudinal axis:

[0066] (Cross-sectional area of ​​the segment) - (Area of ​​the sheet material in the cross-section) = (Area of ​​the space)

[0067] (Area of ​​space) / (Cross-sectional area of ​​segment) = (End face void ratio)

[0068] It should be noted that the area of ​​the sheet material in cross-section can also be calculated from the sheet material width × sheet material thickness.

[0069] <Sheet Material>

[0070] The sheet material is a sheet-shaped material containing pulp, and paper or non-woven fabric may be used as an example. The sheet material may additionally include an aerosol base. The density of the sheet material is not particularly limited, but the density is preferably 0.6 g / cm³ or less. The lower limit of the density of the sheet material is not particularly limited, but is generally 0.01 g / cm³ or more and preferably 0.1 g / cm³ or more.

[0071] The sheet material preferably has a density of 0.01 to 0.4 g / cm³, more preferably 0.1 to 0.3 g / cm³.

[0072] Although the aerosol-generating segments may contain tobacco material, the aerosol-generating segments preferably do not contain tobacco material in terms of easily controlling the components delivered by each segment. That is, the sheet material filling the aerosol-generating segments preferably does not contain tobacco material.

[0073] The inventors have discovered that aerosol delivery increases when the density of the sheet material is intentionally set to a low level. Although the exact reason for this is not clear, the inventors hypothesize as follows: By setting a small cross-sectional area per channel, the amount of air circulating in the longitudinal direction is not reduced, but the thermal conductivity in the transverse direction is increased, so that the aerosol generating segment is efficiently heated through its interior. Consequently, the amount of aerosol generated increases, and aerosol delivery to the user increases.

[0074] There are no specific limitations on the breathability of the sheet material, but it is preferably 1300 CORESTA units or more. There are no specific limitations on the upper limit, but it is generally 40,000 CORESTA units or less. If the sheet material has a breathability of 1300 CORESTA units or more, the amount of air circulating through the aerosol-generating segments is maintained, and the thermal conductivity can also be maintained and the transfer can be increased.

[0075] The sheet material has a breathability of 2,000 to 30,000 CORESTA units, more preferably 10,000 to 25,000 CORESTA units.

[0076] Permeability is a value measured according to ISO 2965:2009 and is expressed as the flow rate (cm³) of gas passing through a surface area of ​​1 cm² per minute at a differential pressure of 1 kPa on both sides of the paper. 1 CORESTA unit (1 CU) is cm³ / (min·cm²) under 1 kPa.

[0077] The sheet material preferably has a drainage capacity of 700 ml or more. There is no specific limit on the upper limit, but it is generally 1000 ml or less. When the sheet material has a drainage capacity of 700 ml or more, aerosol delivery is increased.

[0078] The drainage of the sheet material mentioned herein is a measured value obtained by decomposing the paper of the sheet material and restoring it to a fibrous state, and specifically, is a value measured by the following procedure.

[0079] The sheet material is first decomposed according to JIS P 8220-1. Then, the drainage of the resulting pulp suspension is measured according to JIS P 8121-2.

[0080] If it is difficult to decompose the sheet material by normal decomposition using water, the sheet material can be decomposed in a 4% aqueous sodium hydroxide solution and then washed with water. The sheet material can be decomposed by repeating this treatment several times (e.g., 3 times) until the sheet material is decomposed.

[0081] The sheet material preferably has a basis weight of 50 gsm or less. Although the lower limit is not specifically restricted, it is generally 15 gsm or more. When the sheet material has a basis weight of 50 gsm or less, aerosol delivery is increased. Additionally, the aerosol-generating segment can be tightly packed into the sheet material, making it possible to obtain a strong sheet material. The sheet material more preferably has a basis weight of 15 to 35 gsm, and even more preferably 20 to 25 gsm.

[0082] In addition, from the same perspective, the sheet material preferably has a thickness of 40 μm to 100 μm, more preferably 60 μm to 90 μm.

[0083] In order to adjust the density, air permeability, drainage, and basis weight of the sheet material to be within the above ranges, the raw material of the sheet material may be appropriately selected or the method for producing the sheet material may be adjusted. For example, during production, the type of pulp constituting the raw material of the sheet material, the length and amount of fibers, and the type and amount of fillers may be adjusted, or alternatively, the degree of refining, the papermaking method, and / or the applied pressure may be adjusted. In particular, the paper cited in the embodiments of this specification may be used as a sheet material.

[0084] There are no specific restrictions on the method of packing the aerosol generating segment (110) with a sheet material, and the sheet material may be surrounded by a packaging sheet (112), or the cigarette sheet may be packed in a packaging sheet (112) formed in a tubular shape. If the aerosol generating segment (110) is substantially rectangular in shape in the longitudinal direction, the aerosol generating segment (110) may be packed such that the longitudinal direction of the sheet material is randomly oriented within the packaging sheet (112), or the longitudinal direction of the sheet material may be packed such that it is aligned with the axial direction of the aerosol generating segment (110) or a direction perpendicular to the axial direction. Additionally, for example, a sheet material cut into pieces having a width of 0.5 mm to 2.0 mm (e.g., a length of 5 mm to 40 mm) can be packed in a random orientation, or a sheet material cut into pieces having a width of 1.0 mm to 3.0 mm (e.g., a length of 5 mm to 40 mm) can be packed such that the longitudinal direction of the pieces of the sheet material is aligned parallel to the direction of the airflow. Preferably, the sheet material is folded (processed to form longitudinal ridges) and then packed in a gathered form. When the aerosol generating segment (110) is heated, the tobacco component contained in the aerosol generating segment (110) is vaporized, and the inhalation action transfers this tobacco component to the cooling unit (120) and the filter unit (130).

[0085] The wrinkle depth is preferably 0.1 mm to 1.0 mm.

[0086] The wrinkle depth may be, for example, 0.1 mm to 0.3 mm, 0.3 mm to 0.7 mm, or 0.7 mm to 1.0 mm.

[0087] Additionally, the sheet material can be packed in a spiral shape such that the central axis of the spiral is substantially coaxial with the axial direction of the aerosol generating segment (110).

[0088] In terms of balancing the amount of airflow and thermal conductivity, one or more sheet materials are preferably folded and packed such that the folds are substantially parallel to the direction of airflow.

[0089] The aerosol generating segment (110) preferably includes a plurality of channels penetrating in the direction of airflow, and these channels are formed by folding and packing the sheet material in the manner described above. The average cross-sectional area per channel at the end face of the aerosol generating segment (110) is preferably 0.15 mm² or less. The lower limit is not specifically limited and is generally 0 mm² or more. The average cross-sectional area per channel is preferably 0.01 mm² to 0.15 mm², more preferably 0.01 mm² to 0.1 mm².

[0090] When the average cross-sectional area per channel is within the above range, this is considered to maintain a balance between air circulation in the airflow direction (longitudinal direction) and thermal conductivity in the transverse direction, and to increase aerosol delivery.

[0091] A method for adjusting the average cross-sectional area per channel to within the above range includes the step of packing the sheet material in the packing form cited above, and the step of using paper satisfying the density and basis weight, etc. mentioned above as the sheet material.

[0092] It should be noted that the cross-sectional area per channel is measured by imaging the end faces of the aerosol-generating segments with a camera and applying the acquired end face images to image analysis. The camera used for image analysis is the "High Performance 16x Speed ​​0.47-Megapixel Monochromatic Camera CA-H048MX" manufactured by Keyence Corporation. Other equipment is as shown in Table 1 below.

[0093]

[0094] Image analysis is based on procedures generally performed by those skilled in the art. Specifically, the analysis is carried out according to the following processing flow: (1) an end plane perpendicular to the longitudinal direction of the aerosol-generating segment is imaged; (2) shading correction and binarization are performed as preprocessing; and (3) blob processing is performed to extract the region of the black blob portion (corresponding to the channel).

[0095] The width of the sheet material also depends on the size and shape of the aerosol generating segment (110), but for example, when the aerosol generating segment (110) is in the shape of a rod with a major axis length of 7 mm × a diameter of 7 mm, or when the aerosol generating segment (110) is in the shape of a rod with a major axis length of 20 mm × a diameter of 7 mm, the width of the sheet material is generally 50 mm to 300 mm, more preferably 100 mm to 270 mm, and more preferably 150 mm to 250 mm. When the width of the sheet material is within the above range, sufficient aerosol can be generated.

[0096] The packing amount of sheet material packed in the aerosol generating segment (110) also depends on the size and shape of the aerosol generating segment (110), but for example, when the aerosol generating segment (110) is in the shape of a rod with a major axis length of 7 mm × diameter of 7 mm, or when the aerosol generating segment (110) is in the shape of a rod with a major axis length of 20 mm × diameter of 7 mm, the packing amount is generally 15 mg to 100 mg, preferably 25 mg to 70 mg, more preferably 30 mg to 50 mg.

[0097] The packing density of the sheet material within the aerosol generating segment (110) is preferably 0.1 g / cm³ to 0.3 g / cm³, more preferably 0.13 g / cm³ to 0.17 g / cm³. A packing density of the sheet material within the above range provides an excellent balance between airflow and thermal conductivity, and can also increase transfer.

[0098] Aerosol Base

[0099] An aerosol generating segment according to an embodiment of the present invention comprises an aerosol base. The aerosol base is preferably included in a sheet material packed in the aerosol generating segment, but the aerosol base may also be packed separately from the sheet material.

[0100] An aerosol base is a base that generates an aerosol as a result of heating. Aerosol bases that may be provided include glycerol, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof. Among these, the aerosol base preferably comprises at least one selected from the group consisting of glycerol and propylene glycol, and more preferably comprises glycerol, in terms of its effect on smoking taste.

[0101] The sheet material according to this embodiment preferably has a relatively low density. In this case, it is more difficult to retain the aerosol base than with high-density paper. For this reason, the aerosol base is preferably in gel form at 25°C to improve aerosol base retention.

[0102] In the present invention, "gel form" refers to a state in which a material has high viscosity and loses its fluidity, so that the entire system exhibits solid-like characteristics. Specifically, when a composition is placed in a container such as a vial and the container is tilted sideways, the composition does not spread across the entire side that becomes the bottom when the container is tilted sideways, and this state can be visually confirmed.

[0103] The method of incorporating a gel-type base into a sheet material is not particularly limited. For example, a composition that is in gel form at room temperature (25°C) may be heated to increase its fluidity and may be cooled after being applied to the surface of a sheet material. For example, an aerosol base that is in gel form at room temperature may be prepared by incorporating a thickening stabilizer into the aerosol base.

[0104] Examples of thickening stabilizers that may be mentioned include xanthan gum, gellan gum, pyrethium seed gum, pectin, carboxymethyl cellulose, hydroxypropyl cellulose, polyvinyl alcohol, agarose, pullulan, alginic acid, polyacrylic acid, urethane compounds, and alkali metal salts or alkaline earth metal salts thereof, carrageenan, agar, xanthan gum, gellan gum, pyrethium seed gum, konjac glucomannan, locust bean gum, guar gum, tamarind gum, tara gum, starch, cassia gum, and pyrethium seed gum. Among these, at least one selected from the group consisting of carboxymethyl cellulose, hydroxypropyl cellulose, sucrose acetate isobutyrate, agarose, agar, gellan gum, tamarind gum, and guar gum is preferred in terms of its effect on smoking taste. Among the thickening stabilizers mentioned above, a material capable of forming a three-dimensional mesh structure (that can be gelled) is preferred, and at least one selected from the group consisting of agar, gellan gum, tamarind gum, and guar gum is further preferred, and agar is particularly preferred.

[0105] The content ratio of liquid aerosol to thickening stabilizer is, for example, 99 / 1 to 90 / 10.

[0106] There are no specific limitations on the amount of aerosol base added to the sheet material, but the content of the aerosol base in the aerosol generating segment is preferably 5 to 100 mg, more preferably 10 to 70 mg, and particularly preferably 20 to 50 mg. Sufficient aerosol can be generated when the aerosol base content of the aerosol generating segment is within the above range.

[0107] Only a portion of the surface of the sheet material may be coated with an aerosol base, but the entire surface of the sheet material is preferably coated with an aerosol base.

[0108] The viscosity of the aerosol base at 25°C is preferably 4000 mPa·s or higher, more preferably 5000 mPa·s or higher, and even more preferably 10000 mPa·s or higher. When the viscosity at 25°C is 4000 mPa·s or higher, a sufficient amount of the aerosol base can be retained by the sheet material within the aerosol generating segment.

[0109] The viscosity of the aerosol base at 70°C is generally 400 mPa·s to 10,000 mPa·s, preferably 1,000 mPa·s to 5,000 mPa·s, more preferably 1,500 mPa·s to 3,000 mPa·s.

[0110] The viscosity of the aerosol base can be appropriately adjusted by the composition of the aerosol base, for example, the amount of thickening stabilizer used.

[0111] The viscosity of the aerosol base is measured by the following test.

[0112] <Test Conditions>

[0113] Measuring instrument: SV-10 Tuning Fork Vibration Viscometer (AND Co., Ltd.)

[0114] Natural frequency: 30 Hz

[0115] Sample amount: 10 ml

[0116] Measurement temperature range: 80℃ to 25℃

[0117] (Measurement Procedure)

[0118] After heating the sample to 80°C, place 10 ml of the sample into a dedicated disposable container, lower the sensor part, and start the measurement. Measure the sample temperature and viscosity over time.

[0119] Wrapping paper

[0120] The wrapping paper (112) is a sheet material for wrapping the filler (111) within the aerosol generating segment, and there are no special restrictions on the composition of the wrapping paper (112), and general wrapping paper may be used. For example, cellulose fiber paper may be used as the base paper for the wrapping paper (112); more specifically, hemp, wood, or a mixture thereof may be cited. The basis weight of the base paper of the wrapping paper (112) is, for example, generally 25 gsm or more, preferably 35 gsm or more. Meanwhile, the basis weight is generally 70 gsm or less, preferably 60 gsm or less, and more preferably 55 gsm or less. There is no special limitation on the thickness of the packaging paper (112) having the above characteristics, but in terms of rigidity and breathability and ease of adjustment during papermaking, it is generally 20 μm or more, preferably 30 μm or more, more preferably 40 μm or more, and also generally 100 μm or less, preferably 80 μm or less, more preferably 75 μm or less.

[0121] A square or rectangular shape may be cited as the shape of the packaging (112) for the aerosol generating segment (110) (filler (111)). When used as the packaging (112) for wrapping the filler (111) (for producing the aerosol generating segment (110)), one side may have a length of about 6 mm to 70 mm, and the other side may have a length of 15 mm to 28 mm, preferably 22 mm to 24 mm, more preferably about 23 mm.

[0122] In addition to the pulp mentioned above, the packaging paper (112) may also contain a filler. The content of the filler may be 5 mass% or more and less than 40 mass% with respect to the total mass of the packaging paper (112), preferably 10 mass% to 30 mass%. The content of the filler in the packaging paper (112) is preferably 15 mass% to 25 mass% within a preferred basis weight range (35 gsm to 55 gsm). Additionally, the content of the filler is preferably 15 mass% to 20 mass% when the basis weight of the packaging paper (112) is 40 gsm to 55 gsm. Calcium carbonate, titanium dioxide, or kaolin, etc., may be used as fillers, but calcium carbonate is preferably used to improve flavor and whiteness, etc.

[0123] In addition to the base paper and filler, various auxiliary agents may be added to the packaging paper (112), and, for example, a water resistance enhancer may be added to improve water resistance. Water resistance enhancers include wet strength agents (WS agents) and sizing agents. Examples of wet strength agents that may be cited include urea formaldehyde resin, melamine formaldehyde resin, polyamide epichlorohydrin (PAE), etc. Also, examples of sizing agents that may be cited include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), or highly saponified polyvinyl alcohol having a degree of saponification of 90% or more. Paper strength agents, for example, polyacrylamide, cationic starch, oxidized starch, CMC, polyamide epichlorohydrin resin, or polyvinyl alcohol may be added as auxiliary agents. In particular, it is known that using a small amount of oxidized starch improves air permeability (e.g., JP 2017-218699 A). The packaging paper (112) can also be appropriately coated.

[0124] A coating agent may be added to at least one of the two surfaces of the packaging paper (112), namely the front surface and the rear surface. There are no particular limitations on the coating agent, but a coating agent capable of forming a film on the surface of the paper and reducing liquid permeability is preferred. Examples of coating agents that may be cited include alginic acid and its salts (e.g., sodium salts), polysaccharides, e.g., pectin and gum arabic, cellulose derivatives, e.g., ethyl cellulose, methyl cellulose, carboxymethyl cellulose, and nitrocellulose, starch and its derivatives (e.g., ether derivatives, e.g., carboxymethyl starch, hydroxyalkyl starch, and cationic starch), and ester derivatives, e.g., starch acetate, starch phosphate, or octenyl succinic acid starch). The packaging paper (112) wrapping the aerosol-generating segment preferably comprises a coating agent on the inner surface in contact with the sheet material. Additionally, the coating agent preferably comprises a polysaccharide. The amount of coating agent can be appropriately set, but in terms of liquid resistance, it is preferably 1 to 15 gsm, more preferably 5 to 10 gsm.

[0125] <Cooling Section>

[0126] The aerosol generating article may include a cooling section (120) and, if it has the function of cooling the vapor generated by heating the aerosol generating segment, there are no special restrictions on the configuration of the cooling section (120), and, for example, a cardboard processed into a cylindrical shape may be cited. In this case, the inside of the cylinder is a cavity, and the vapor containing the aerosol base and tobacco flavoring components is cooled by coming into contact with the air inside the cavity.

[0127] According to one type, the cooling section (120) may be a paper tube obtained by processing a single paper sheet or a plurality of combined paper sheets into a cylindrical shape. Additionally, holes for introducing ambient air are preferably present around the paper tube to enhance the cooling effect provided by contact between the external air and high-temperature steam. Holes (103) for introducing air from the outside are provided in the cooling section (120). There is no particular limitation on the number of holes (103) in the cooling section (120). In this embodiment, a plurality of holes (103) are arranged at fixed intervals in the circumferential direction of the cooling section (120). Additionally, the group of holes (103) arranged in the circumferential direction of the cooling section (120) may be formed in multiple stages along the axial direction of the cooling section (120). Providing a hole (103) in the cooling section (120) allows cold air to flow from the outside into the cooling section (120) when a user inhales the aerosol generating item (100), thereby lowering the temperature of the air and volatile components introduced from the aerosol generating segment (110). Additionally, vapor containing an aerosol base and tobacco flavor components condenses as a result of being cooled by the cold air introduced into the cooling section (120) through the hole (103). By means of these means, it is also possible to control the size of the aerosol particles while promoting aerosol generation. It should be noted that the cooling effect may be enhanced by coating the inner surface of the paper tube with a polymer coating such as polyvinyl alcohol or a polysaccharide coating such as pectin, thereby utilizing the heat of the solution associated with heat absorption or phase change by the coating. The airflow resistance of the cylindrical cooling section is 0 mmH2O.

[0128] When the cooling section (120) is packed with a sheet or the like to cool the air and volatile components flowing from the aerosol generating segment (110) into the cooling section (120), there is no special limitation on the total surface area of ​​the cooling section (120), and it may be, for example, 300 mm² / mm to 1000 mm² / mm. This surface area is the surface area per length (mm) of the cooling section (120) in the direction of airflow. The total surface area of ​​the cooling section (120) is preferably 400 mm² / mm or more, more preferably 450 mm² / mm or more, while preferably 600 mm² / mm or less, more preferably 550 mm² / mm or less.

[0129] The internal structure of the cooling section (120) preferably has a large total surface area. Accordingly, in a preferred embodiment, the cooling section (120) may be formed by a sheet of thin material that is folded to form a channel, then fluted, gathered, and folded. The more folds or wrinkles there are within a given volume of the element, the larger the total surface area of ​​the cooling section (120). There is no particular limitation on the thickness of the material constituting the cooling section (120), and it may be, for example, 5 μm to 500 μm or 10 μm to 250 μm.

[0130] From the perspective of reducing environmental impact, it is also desirable to use paper as the material for the cooling sheet member. The paper serving as the cooling sheet material preferably has a basis weight of 30 to 100 g / m² and a thickness of 20 to 100 μm. From the perspective of reducing the removal of flavoring components and aerosol base components within the cooling section, the paper serving as the cooling sheet material preferably has low air permeability, and an air permeability of 10 CORESTA units or less is preferred. The cooling effect may be enhanced by coating the paper serving as the cooling sheet material with a polymer coating such as polyvinyl alcohol or a polysaccharide coating such as pectin, thereby utilizing the heat of the solution associated with heat absorption or phase change by the coating.

[0131] The hole (103) of the cooling section (120) should preferably be positioned at a distance of at least 1 mm from the boundary between the cooling section (120) and the filter section (130), and more preferably at a distance of at least 2 mm. This not only improves the cooling capacity of the cooling section (120), but also enables suppressing the retention of components generated by heating within the cooling section (120) and increasing the amount of these components delivered. Additionally, the hole in the tipping sheet (140) is preferably provided at a position directly above the hole (103) provided in the cooling section (120) (a position that overlaps vertically). To this end, the aerosol generating segment (110), the cooling section (120), and the filter section (130) can be wrapped with the tipping sheet (140) and combined together, and then a laser light can be irradiated from above the tipping sheet (140) onto the tipping sheet (140) and the cooling section (120) to allow the laser light to penetrate, thereby providing the hole. The holes of the cooling section (120) are preferably provided such that the ratio of air inflow from the holes (the ratio of the volume of air inflow from the holes when the ratio of air inhaled from the mouthpiece end is 100 vol%) during an inhalation of 17.5 ml / second in the smoking machine is 10 to 90 vol%, preferably 50 to 80 vol%, more preferably 55 to 75 vol%, and, for example, the number of holes (103) per group of holes can be selected from the range of 5 to 50 holes, and the diameter of the holes (103) can be selected from the range of 0.1 to 0.5 mm, and said ratio can be achieved by a combination of such selections. The ratio of air inflow can be measured by a method based on ISO 9512 using a smoking machine (e.g., a 1-port smoking machine manufactured by Borgwaldt). There is no special limitation on the length of the cooling section (120) in the axial direction (airflow direction), but it is generally 10 mm or more and preferably 15 mm or more, and also generally 40 mm or less, preferably 35 mm or less, more preferably 30 mm or less.The axial length of the cooling section (120) is particularly preferably 20 mm. By setting the axial length of the cooling section (120) above the lower limit mentioned above, it is possible to ensure a sufficient cooling effect and obtain a pleasant flavor. Additionally, by setting the axial length of the cooling section (120) below the upper limit mentioned above, it is possible to suppress losses caused by vapor and aerosol generated during use adhering to the inner wall of the cooling section (120).

[0132] Filter section

[0133] If it functions as a typical filter, there are no special restrictions on the composition of the filter section (130), and an acetate filter may be given as an example, and the acetate filter uses cellulose acetate tow as the filter medium (150) which is wrapped in a cylindrical shape with a filter wrapper (wrap) (160). There are no special restrictions on the single filament fineness or total fineness of the cellulose acetate tow, but when the filter section (130) has a circumference of 22 mm, the single filament fineness is preferably 5 to 20 g / 9000 m and the total fineness is preferably 12,000 to 30,000 g / 9000 m. The cross-sectional shape of the fibers of the cellulose acetate tow may be a Y cross-section or an R cross-section. When forming the filter portion (130) by packing cellulose acetate tow, triacetin may be added in an amount of 5 to 10 mass% relative to the mass of the cellulose acetate tow to increase the filter hardness. In the example illustrated in FIG. 2, the filter portion (130) is formed as a single segment, but the filter portion (130) may be formed as a plurality of segments. In an exemplary type of filter portion (130) formed as a plurality of segments, for example, a hollow filter such as a central hole may be placed upstream as an upstream segment (towards the aerosol generating segment (110)), and an acetate filter packed with cellulose acetate tow on the mouthpiece cross-section may be placed downstream as a segment (towards the mouthpiece end (101)). Thanks to this type, it is possible to improve the appearance of the aerosol generating article (100) while preventing unnecessary loss of the generated aerosol. Additionally, in terms of comfort when the item is placed in the mouth and sensory changes in the inhalation response, an acetate filter is positioned on the upstream side (aerosol generating segment (110) side) and a hollow filter, such as a central hole, is positioned on the downstream side (mouthpiece end (101) side) as a segment.In addition, instead of using cellulose acetate tow as the filter medium (150), it is also possible to adopt a type of filter section (130) that uses a paper filter packed with sheet-like paper pulp or another alternative filter as the filter medium (150).

[0134] Examples of general functions of the filter in the filter section (130) that may be cited include adjusting the amount of air mixed when an aerosol is inhaled, reducing flavor, and reducing nicotine and tar, but not all of these functions need to be provided. In addition, in electric heating tobacco products that produce fewer components than tobacco products and tend to have a lower filling rate of tobacco filler, it is also an important function of the filter to prevent the tobacco filler from falling out while controlling the filtration function.

[0135] The filter section (130) has a substantially circular shape in its cross section, and the diameter of the circle may vary appropriately depending on the size of the product, but is generally 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. In addition, it should be noted that if the cross section is not circular, the diameter mentioned above is assumed to be a circle having an area equal to the area of ​​the relevant cross section, and such a circle diameter is applied. The circumferential length of the filter section (130) may vary appropriately depending on the size of the product, but is generally 14.0 mm to 27.0 mm, preferably 15.0 mm to 26.0 mm, and more preferably 16.0 mm to 25.0 mm. The axial length of the filter section (130) may vary appropriately depending on the size of the product, but is generally 5 mm to 35 mm and preferably 10.0 mm to 30.0 mm. The shape and dimensions of the filter medium can be appropriately adjusted so that the shape and dimensions of the filter portion (130) are within the above range.

[0136] There is no particular limit on the airflow resistance per 120 mm axial length of the filter section (130), but it is generally 40 mmH2O to 300 mmH2O, preferably 70 mmH2O to 280 mmH2O, more preferably 90 mmH2O to 260 mmH2O.

[0137] Additionally, there are no specific limitations on the density of the filter medium (150) within the filter section (130), but it is generally 0.10 g / cm³ to 0.25 g / cm³, preferably 0.11 g / cm³ to 0.24 g / cm³, and more preferably 0.12 g / cm³ to 0.23 g / cm³. The filter section (130) may include a filter wrapper wrapped around the filter medium to improve strength and structural rigidity. There are no specific limitations on the shape of the filter wrapper, and the filter wrapper may include a seam comprising one or more adhesive lines. The adhesive may include a hot melt adhesive, and additionally, the hot melt adhesive may include polyvinyl alcohol. Also, if the filter section (130) includes two or more segments, these two or more segments are preferably wrapped together by a connecting filter wrapper (external filter wrapper) to connect the segments. The filter wrapper preferably wraps two or more of these segments together. There are no special restrictions on the material of the filter wrapper of the filter section (130), and well-known materials may be used, and the filter wrapper may also include a filler, such as calcium carbonate.

[0138] There is no special limitation on the thickness of the filter wrapper (160), and the thickness is generally 20 μm to 140 μm, preferably 30 μm to 130 μm, more preferably 30 μm to 120 μm. There is no special limitation on the basis weight of the filter wrapper (160), and the basis weight is generally 20 gsm to 100 gsm, preferably 22 gsm to 95 gsm, more preferably 23 gsm to 90 gsm. Additionally, the filter wrapper may or may not be coated, but is preferably coated with a desired material in order to impart functions other than strength and structural rigidity.

[0139] If the filter section (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 external filter wrapper. The external filter wrapper may be, for example, a cylindrical paper. Additionally, the aerosol generating segment (110), the cooling section (120), and the filter section (130) to which the center hole filter and the acetate filter are connected may be connected, for example, by a tipping paper (140). In the case of such a connection, for example, the inner surface of the tipping paper (140) may be coated with an adhesive, such as a vinyl acetate-based adhesive, and then the aerosol generating segment (110), the cooling section (120), and the filter section (130) to which the center hole filter and the acetate filter are connected may be introduced into the interior and rolled. It should be noted that these elements may also be connected by a number of distinct connections having a number of connecting papers. For example, the aerosol generating segment (110) and the cooling section (120) can be pre-coupled by a first connecting paper (first tipping paper), and then the filter section (130) can be coupled thereto by a second connecting paper (second tipping paper).

[0140] The filter unit (130) may contain, inside, a destructible additive release container (170) (e.g., a capsule) comprising a destructible outer shell made of gelatin or the like. There are no special restrictions on the shape of the capsule (also referred to as an "additive release container" in the art), and well-known shapes may be adopted, and it is possible to use a destructible additive release container (170) comprising a destructible outer shell made of gelatin or similar material, for example. There are no special restrictions on the shape of the capsule, and the capsule may be, for example, an easily destructible capsule, and its shape is preferably spherical. Any of the additives mentioned above may be included as the additive contained within the capsule, but particularly preferably, flavorings or activated carbon are included. Additionally, one or more types of materials that serve to assist in the filtration of smoke may be added as additives. There are no special restrictions on the form of the additive, and it is generally liquid or solid. It should be noted that using a capsule containing an additive is known in the art. Easily destructible capsules and methods for producing them are well known in the art.

[0141] Examples of flavorings include menthol, spearmint, peppermint, fenugreek, or clove, medium-chain fatty acid triglycerides (MCT), etc., or combinations thereof.

[0142] Method for producing aerosol-generating products

[0143] There are no specific limitations on the method for producing an aerosol-generating article according to the present embodiment, and a combination of known methods may be applied. For example, a sheet material is first wrinkled while being extruded from a roller. The wrinkled sheet material is coated with a heated aerosol base to increase its fluidity. Then, the coated sheet material is wrapped in wrapping paper to produce a rod-shaped aerosol-generating segment (110). Then, the aerosol-generating segment (110), the cooling section (120), and the filter section (130) can be wrapped in tipping paper (140) to produce an aerosol-generating article.

[0144] The cooling section (120) and the filter section (130) are preferably positioned downstream of the aerosol generating segment (110) in the direction of the airflow.

[0145] As long as the aerosol base is sufficiently fluid to allow coating, there is no special temperature limit when the sheet material is coated with the aerosol base, and the temperature is, for example, 50°C to 80°C.

[0146] The coating process is preferably performed by a series of nozzles or roller delivery. A uniform coating can still be achieved if the aerosol base has high viscosity.

[0147] The aerosol generating article (100) may include a member other than the above member, and, for example, may additionally include a tip segment on the upstream side (opposite side to the mouthpiece end) of the aerosol generating segment (110). The tip segment may include a filler inside and may be wrapped with a tip segment wrapper. The filler may include cellulose acetate fibers or natural pulp fibers, etc. The tip segment preferably includes paper as a filler. The tip segment may additionally include a fragrance. The tip segment may include an aerosol base, but preferably does not include an aerosol base.

[0148] The leading segment may additionally include a tobacco segment containing tobacco material.

[0149] There are no specific restrictions on the shape of each segment, but the segments are generally bar-shaped.

[0150] <Segment composition of aerosol-generating items>

[0151] The arrangement of segments within the aerosol generating article (100) is appropriately controlled to achieve an excellent balance between heating and airflow resistance of the aerosol base, etc., contained in each segment, and to enable increased delivery. The appropriate arrangement of segments will be described in detail below, but is not limited thereto.

[0152] (Variation Example 1)

[0153] FIG. 4 is a schematic diagram of an aerosol-generating article (100) according to Variant Example 1. Note that in the description of the following variations, the same reference numerals are assigned to corresponding components and redundant descriptions are not provided. Additionally, packaging paper or tipping paper may be present on the outer periphery of each segment, but such paper is not shown in the drawings.

[0154] In Variation 1, as illustrated in FIG. 4, the aerosol generating article (100) comprises, in order from the upstream side (left side of the drawing) in the direction of airflow, a tip end segment (401), a tobacco segment (402), an aerosol generating segment (110), a cooling section (120), and a filter section (130). That is, a tobacco segment containing tobacco material is located upstream of the aerosol generating segment (110). This configuration can prevent the aerosol base within the aerosol generating segment from leaking. Additionally, the heater (32) heats at least a portion of the outer periphery of the aerosol generating segment (110), preferably heating the entire outer periphery of the aerosol generating segment (110). As a result, an aerosol is generated from the aerosol generating segment during the initial smoking phase, which can increase the amount of aerosol delivered during the initial smoking phase. Additionally, an aerosol is generated from the tobacco segment during the later smoking phase, which can deliver sufficient aerosol during the later smoking phase as well.

[0155] (Variation Example 2)

[0156] FIG. 5 is a schematic diagram of an aerosol-generating article (100) according to Variant Example 2.

[0157] In Variation 2, the aerosol generating article (100) does not have a tobacco segment (402) and includes, in order from the upstream side in the direction of airflow, a leading segment (401), an aerosol generating segment (110), a cooling section (120), and a filter section (130). This configuration can prevent leakage of the aerosol base within the aerosol generating segment. Additionally, the heater (32) heats at least some or all of the outer periphery of the aerosol generating segment (110). In the configuration of Variation 2, the heater (32) preferably heats a portion of the outer periphery of the aerosol generating segment (110), and more preferably only a portion of it downstream in the direction of airflow. As a result, aerosol is generated from the downstream side of the aerosol generating segment during the initial smoking stage, and aerosol is also generated from the upstream side of the aerosol generating segment during the later smoking stage, making it possible to deliver sufficient aerosol.

[0158] (Variation Example 3)

[0159] FIG. 6 is a schematic diagram of an aerosol-generating article (100) according to Variant Example 3.

[0160] In Variation 3, the aerosol generating article (100) does not have a tobacco segment (402) and includes, in order from the upstream side in the direction of airflow, a tip end segment (401), a first aerosol generating segment (411), a second aerosol generating segment (412), a cooling section (120), and a filter section (130). Here, the first aerosol generating segment (411) and the second aerosol generating segment (412) constitute an aerosol generating segment according to one aspect of the present invention. The first aerosol generating segment and the second aerosol generating segment may have the same configuration, but different configurations will not be outside the scope of the present invention. Furthermore, it is not limited to two aerosol generating segments, and a larger number of aerosol generating segments may be provided in the same way.

[0161] This configuration can prevent the aerosol base within the aerosol generating segment from leaking. Aerosol delivery can also be controlled by varying the amount of aerosol base within the first aerosol generating segment and the second aerosol generating segment. The second aerosol generating segment preferably contains a greater amount of aerosol base than the amount of aerosol base within the first aerosol generating segment. Additionally, the heater (32) heats at least some or all of the outer periphery of the aerosol generating segment (110). In the configuration of Variant Example 2, the heater (32) preferably heats the entire outer periphery of the aerosol generating segment located furthest downstream in the direction of the airflow. As a result, aerosol is generated from the second aerosol generating segment during the initial smoking phase, and aerosol is also generated from the first aerosol generating segment during the later smoking phase, thereby enabling sufficient aerosol delivery.

[0162] (Variation Example 4)

[0163] FIG. 7 is a schematic diagram of an aerosol-generating article (100) according to variant example 4.

[0164] In Variation 4, the aerosol generating article (100) comprises, in order from the upstream side in the direction of airflow, a leading segment (401), an aerosol generating segment (110), a tobacco segment (402), a cooling section (120), and a filter section (130). That is, a tobacco segment containing tobacco material is located downstream of the aerosol generating segment (110). This configuration can prevent the aerosol base within the aerosol generating segment from leaking. Additionally, the heater (32) heats at least a portion of the outer periphery of the tobacco segment (402), and preferably heats the entire outer periphery of the tobacco segment (402).

[0165] (Variation Example 5)

[0166] FIG. 8 is a schematic diagram of an aerosol-generating article (100) according to variant example 5.

[0167] In Variation Example 5, similar to Variation Example 1, the aerosol generating article (100) comprises, in order from the upstream side in the direction of airflow, a leading segment (401), a tobacco segment (402), an aerosol generating segment (110), a cooling section (120), and a filter section (130). Subsequently, the heater (32) heats the entire outer periphery of the aerosol generating segment (110) and heats at least a portion of the outer periphery of the tobacco segment (402). The heater (32) preferably heats the entire outer periphery of the aerosol generating segment (110) and the entire outer periphery of the tobacco segment (402). By arranging the heater (32) in this manner, it is possible to increase the amount of aerosol delivered during the initial smoking phase.

[0168] In any variation, when the aerosol generating article (100) includes a tobacco segment (402), both the aerosol generating segment (110) and the tobacco segment (402) are rod-shaped, and the ratio of the length of the aerosol generating segment in the longitudinal direction to the length of the tobacco segment in the longitudinal direction (length of the aerosol generating segment in the longitudinal direction / length of the tobacco segment in the longitudinal direction) is preferably 3 / 1 to 1 / 3.

[0169] Ratios within this range achieve an excellent balance between the intake and heating of the components contained in each segment, and delivery is increased.

[0170] This ratio is more preferably 2 / 1 to 1 / 2, and more preferably 3 / 2 to 2 / 3. It should be noted that if there are multiple aerosol-generating segments, the sum of the lengths of all aerosol-generating segments in the long axis direction is treated as the length mentioned above in the long axis direction.

[0171] In addition, in any variant, when the aerosol generating article (100) includes a tobacco segment (402), the tobacco segment (402) may include an aerosol base, and the mass ratio of the aerosol base content of the aerosol generating segment to the aerosol base content of the tobacco segment is preferably 3 / 1 to 1 / 3.

[0172] Ratios within this range achieve an excellent balance between the intake and heating of the components contained in each segment, and delivery is increased.

[0173] This ratio is more preferably 2 / 1 to 1 / 2, and more preferably 3 / 2 to 2 / 3. In addition, the aerosol base content of the aerosol-generating segment may be greater than the aerosol base content of the tobacco segment.

[0174] It should be noted that if there are multiple aerosol-generating segments, the sum of the aerosol base contents of all aerosol-generating segments is treated as the content mentioned above.

[0175] The tobacco segment is packed with a tobacco filler. The tobacco filler comprises cut tobacco or tobacco sheets. The tobacco segment may include an aerosol base. The amount of the aerosol base within the tobacco segment is appropriately set to 5 to 40 mass%, preferably 10 to 30 mass%, more preferably 15 to 25 mass%. The tobacco filler within the tobacco segment may be wrapped in the packaging material described above.

[0176] Electric Heating Aerosol Generation System

[0177] The aerosol generating article (100) described above may be used with an electric heating device that heats the aerosol generating article (100). That is, an electric heating aerosol generating system constituting another embodiment of the present invention includes the aerosol generating article described above and an electric heating device that heats the aerosol generating article.

[0178] There are no specific restrictions on the configuration of the electric heating aerosol generating system, and it may have a configuration such as that shown in FIG. 3, for example. FIG. 3 is a drawing illustrating the internal structure of the electric heating aerosol generating system (200). It should be noted that the aerosol generating article (100) in FIG. 3 is shown as a schematic form of the aerosol generating article (100) in FIG. 1.

[0179] The electric heating aerosol generating system (200) includes an aerosol generating article (100) and an electric heating aerosol generating device (30) that heats an aerosol generating segment (110) of the aerosol generating article (100). The aerosol generating article (100) is received in the receiving portion (310) in such a manner that it can be inserted into and removed from the receiving portion (310) through an insertion portion (3A) of the electric heating aerosol generating device (30).

[0180] When a user uses the electric heating type aerosol generating device (30), an aerosol generating article (100) is inserted into the receiving portion (310), and in this state, a heater provided in the receiving portion (310) generates heat to heat the aerosol base inside the aerosol generating article (100) to generate an aerosol for the user to inhale.

[0181] Additionally, while the heater may directly heat the aerosol generating segment (110), the heater may also heat another aerosol generating source within the aerosol generating article (100), and the heated aerosol may be supplied to the aerosol generating segment (110), and the heated aerosol may further heat the tobacco components, etc. within the other segment so that they may be inhaled by the user.

[0182] The electric heating aerosol generating device (30) includes a housing (31) which is a casing for accommodating various components. The housing (31) accommodates a heater (32), a temperature sensor (35), an inhalation sensor (36), a control device (37), and a power source (38), etc.

[0183] [Reception Department]

[0184] The housing (31) includes a receiving portion (310) for receiving an aerosol-generating article (100) in such a way that the aerosol-generating article (100) can be inserted and removed from the front end toward the rear end.

[0185] The open end of the receiving portion (310) is open toward the outside of the housing (31) and serves as an insertion portion (3A) for inserting an aerosol-generating article (100).

[0186] A heater (32) is provided around the receiving portion (310). Examples of materials that can be used in the receiving portion (310) include metals such as stainless steel and heat-resistant resins. The heater (32) can be placed inside the circumferential wall (310).

[0187] [Heater]

[0188] The heater (32) receives power supply from the control device (37) and generates heat to heat the aerosol generating article (100) contained in the receiving portion (310). There is no special limitation on the heating temperature, and the heating temperature is preferably 400°C or lower, more preferably 150°C to 400°C, and even more preferably 200°C to 350°C. Additionally, the heating temperature can be controlled by the control device (37), and the control device receives signals from the temperature sensor (35) and the inhalation sensor (36).

[0189] The hole (103) provided in the cooling section (120) is preferably provided closer to the mouthpiece end side of the cooling section (120) than to the mouthpiece end side of the area of ​​the cooling section (120) in contact with the electric heating aerosol generating device (30), in order to facilitate the inflow of external air and to suppress the retention of components and air generated by heating inside the cooling section (120). Additionally, the insertion section (3A) of the electric heating aerosol generating device (30) for the aerosol generating article (100) may be tapered to facilitate the insertion of the aerosol generating article (100).

[0190] The description provided above relates to a type in which a heater is used as a means for heating an aerosol generating article (100), specifically, a type in which the aerosol generating article (100) is heated from the outside when the aerosol generating article (100) is inserted into an electric heating aerosol generating device. However, the means for heating the aerosol generating article (100) is not limited to such means, and it is also possible to adopt a type in which, for example, a rod-shaped or spindle-shaped heater is used, and when the aerosol generating article (100) is inserted into an electric heating aerosol generating device, the heater is configured to be inserted into the aerosol generating segment (110) of the aerosol generating article (100) to heat the aerosol generating article (100) from the inside. Additionally, it is also possible to adopt a type in which an inductor is provided as a heater and a heating element for heating flavorings, etc., is introduced into the aerosol generating segment (110) of the aerosol generating article (100). In this type, power can be supplied to an inductor by an output control device (713), and a heating element can be heated by induction heating to heat flavor source, etc. Additionally, a type including a microwave generator as a heater can also be adopted. In this type, power can be supplied to a microwave generator by an output control device (713), and flavor source, etc. within an aerosol generating segment (110) can be heated by microwave heating.

[0191] [Example]

[0192] The present invention will be described below in more specific terms through examples. However, the present invention should not be interpreted as being limited to the following examples.

[0193] <Production of Aerosol-Generating Segments>

[0194] (Aerosol generation segment 1)

[0195] 21 mg of the sheet material using Sample 1 was coated with a mixture obtained by mixing glycerol and agar in a mass ratio of 99:1, which acts as a gel-type aerosol base at 25°C. This sheet material was extruded from a roller and wrinkled, then wrapped in a gathered form with a wrapping paper to produce a cylindrical aerosol generating segment 1 with a length of 7 mm and a diameter of 7 mm.

[0196] Sample 1 was a paper with a basis weight of 21.5 gsm, a thickness of 70 µm, an air permeability of 24,000 CU, and a drainage capacity of 739 ml. The width was 240 mm and the fold depth was 0.5 mm. The packing density of the sheet material was 0.14 g / cm³. A paper with a basis weight of 35 gsm, a thickness of 40 µm, an air permeability of 0 CU, and a width of 23.7 mm was used as a wrapping paper.

[0197] (Aerosol generation segment 2)

[0198] Aerosol generating segment 2 was produced in the same manner as aerosol generating segment 1, except that the paper used as the sheet material was changed to sample 2.

[0199] Sample 2 was a paper with a basis weight of 23 gsm, a thickness of 65 µm, an air permeability of 10,000 CU, and a drainage capacity of 730 ml. The width was 240 mm and the fold depth was 0.5 mm. The packing density of the sheet material was 0.15 g / cm³.

[0200] (Aerosol generation segment 3)

[0201] Aerosol generating segment 3 was produced in the same manner as aerosol generating segment 1, except that the paper used as the sheet material was changed to sample 3.

[0202] Sample 3 was a paper with a basis weight of 35 gsm, a thickness of 88 µm, an air permeability of 3000 CU, and a drainage capacity of 726 ml. The width was 180 mm and the fold depth was 0.3 mm. The packing density of the sheet material was 0.17 g / cm³.

[0203] (Aerosol generation segment 4)

[0204] Aerosol generating segment 4 was produced in the same way as aerosol generating segment 1, except that the paper used as the sheet material was changed to glassine paper.

[0205] The glassine paper had a basis weight of 35 gsm, a thickness of 40 µm, an air permeability of 0 CU, and a drainage capacity of 234 ml. The width was 200 mm and the fold depth was 0.2 mm. The packing density of the sheet material was 0.19 g / cm³.

[0206] (Tobacco Segment)

[0207] Using a cigarette sheet as a tobacco filler, the cigarette sheet was corrugated while being extruded from a roller, and then wrapped in a gathered form with packaging paper to produce cylindrical cigarette segments having a length of 7 mm and a diameter of 7 mm. The cigarette sheet had a basis weight of 200 gsm, a thickness of 249 µm, an air permeability of 11 CU, a width of 95 mm, and a corrugation depth of 0.2 mm. 13 mg of glycerol was added to the cigarette sheet as an aerosol base.

[0208] Table 2 shows the physical properties of the sheet materials used for each aerosol-generating segment.

[0209]

[0210] Measurement of Craftsmanship Volume

[0211] The pore volumes of aerosol-generating segments 1 to 4 were measured by the mercury intrusion method.

[0212] The mercury intrusion method is performed by varying the pressure applied to the mercury and measuring the amount of mercury penetrating into the pores of the sample at each pressure. The conditions under which mercury can penetrate into the pores are expressed as follows: D = -4σcosθ / P, where P is the pressure, D is the pore diameter, θ is the mercury contact angle, and σ is the surface tension. Assuming the contact angle and surface tension are constant, the pressure (P) and pore diameter (D) at which mercury can penetrate at a given time are inversely proportional. Therefore, the pore size distribution can be obtained by substituting the horizontal axis (P) of the PV curve, which can be obtained by measuring the volume of penetrating liquid (V) and the pressure (P) at a given time while varying the pressure, with the pore diameter from the above equation.

[0213] Measurements were performed using a mercury infiltration pore meter ("MicroActive AutoPore V 9600" manufactured by Micromeritics Instrument Corporation), and the mercury pressure ranged from 1.07 to 423.15 psia. Using a mercury contact angle (θ) of 140° and a surface tension (σ) of 480 dyn / cm, the pore size distribution was calculated from the measurement results using the accompanying software. Figure 9 shows the log-derivative pore volume distribution obtained by dividing the pore volume by the mass of each aerosol-generating segment for the measured pore size distribution.

[0214] It can be seen from the drawing that the number of large-diameter pores increases in the order of aerosol generating segment 4, aerosol generating segment 3, aerosol generating segment 2, and aerosol generating segment 1.

[0215] Figure 10 shows the cumulative pore distribution obtained by dividing the pore volume by the mass of each aerosol-generating segment. It should be noted that in this cumulative pore distribution, the cumulative value is calculated from the larger particle size side.

[0216] <Production of Aerosol-Generating Products>

[0217] (Example 1)

[0218] Aerosol generating segment 1, tobacco segment, tip segment, cooling section, and filter section are arranged in a line in the order of tip segment, tobacco segment, aerosol generating segment 1, cooling section, and filter section from the side furthest from the mouthpiece end, and then rolled up with a tipping paper to manufacture an aerosol generating article 1. It should be noted that when the aerosol generating article is inserted into an electric heating device, the location heated by the heater is set to include the entire outer periphery of the aerosol generating segment 1.

[0219] The tobacco segment described above was used as a tobacco segment.

[0220] The tip segment used was packed as Sample 3 and had a length of 6 mm and a diameter of 7 mm. The cooling section used was a hollow tube with a length of 20 mm. The filter section used was packed as a paper filter and had a length of 20 mm.

[0221] (Example 2)

[0222] Aerosol generating article 2 was manufactured in the same manner as in Example 1, except that aerosol generating segment 1 was changed to aerosol generating segment 2.

[0223] (Example 3)

[0224] Aerosol generating article 3 was manufactured in the same manner as in Example 1, except that aerosol generating segment 1 was changed to aerosol generating segment 3.

[0225] (Comparative Example 1)

[0226] Aerosol generating article 4 was manufactured in the same manner as in Example 1, except that aerosol generating segment 1 was changed to aerosol generating segment 4.

[0227] Evaluation Method

[0228] Aerosol delivery from the aerosol-generating articles prepared in the examples and comparative examples was evaluated by the following method. The results are shown in Table 3.

[0229] In each example and comparative example, the aerosol generating article prepared was inserted into an electric heating device (Ploom X manufactured by Japan Tobacco Inc.), the electric heating device was turned on, and a smoking test was started once smoking was possible.

[0230] The smoking test was performed using a 1-port smoking machine manufactured by Borgwaldt for 11 puffs at 30-second intervals under conditions of 55 ml / 2 seconds per puff, and the aerosol was collected on a Cambridge filter for each puff.

[0231] After the smoking test, each Cambridge filter, aerosol-generating segment, and tobacco segment was extracted with 10 ml of ethanol, and the amount of aerosol base (glycerol) was measured by GC-MS. In addition, from the total amount of aerosol base measured for each Cambridge filter, the sum of the amounts of aerosol base for puffs 1 to 4 was taken as the initial aerosol-base delivery amount, and the sum of the amounts of aerosol base for puffs 1 to 11 was taken as the total aerosol-base delivery amount.

[0232] Figure 11 also shows a graph of the amount of aerosol base delivered by each puff.

[0233]

[0234] From the above results, it can be seen that although packed with the same amount of aerosol base, less aerosol base remains in the aerosol generating segment and tobacco segment in the aerosol generating article according to the example than in the aerosol generating article according to the comparative example, and more aerosol base is delivered to the user. The total amount of delivered aerosol base was greater in Examples 1 to 3 than in Comparative Example 1. In addition, the initial amount of aerosol base delivered was particularly greater in Examples 1 to 3 than in Comparative Example 1. It is believed that the initial amount of aerosol base delivered increases when the pore volume of the aerosol generating segment is greater than or equal to a predetermined value. Furthermore, the total amount of aerosol base delivered increased in the order of Comparative Example 1, Example 3, Example 2, and Example 1, and the remaining amount of aerosol base in the aerosol generating segment decreased in the order of Comparative Example 1, Example 3, Example 2, and Example 1. It is believed that as the total aerosol base delivery amount increases and the pore volume of the aerosol generating segment increases, the residual amount of aerosol base within the aerosol generating segment decreases. Additionally, the residual amount of aerosol base within the tobacco segment was also smaller in Examples 1 to 3 than in Comparative Example 1. It can be seen that the difference in the aerosol generating segment also affects the efficiency of delivering the aerosol base from adjacent tobacco segments. The efficiency of delivering the aerosol base from the tobacco segment was also superior in Examples 1 to 3.

[0235] <Production of aerosol-generating segments 5 to 16>

[0236] (Aerosol generation segment 5)

[0237] The papers shown in Table 4 were used as sheet materials, and each was coated with 60 mg of glycerol as an aerosol base. Each sheet material was wrinkled while being extruded from a roller, and then wrapped in packaging paper in a gathered form to produce cylindrical aerosol generating segments (5) having a length of 20 mm and a diameter of 7 mm.

[0238] (Aerosol generating segments 6 to 16)

[0239] Aerosol generating segments 6 to 15 were manufactured in the same manner as aerosol generating segment 5, except that the sheet material was replaced as shown in Table 4 and the aerosol base material coating each sheet material was changed as shown in Table 4.

[0240] In addition, aerosol generating segment 16 was prepared in the same manner as aerosol generating segment 5, except that the aerosol base coating each sheet material was changed to 100 mg of a mixture obtained by mixing glycerol and agar in a mass ratio of 99:1.

[0241] The pore volumes of aerosol-generating segments 5 and 16 were measured in the same manner as in aerosol-generating segments 1 to 4. The results are shown in Table 6.

[0242] In addition, Figures 12 and 13 show the log-differential pore volume distribution and cumulative pore distribution, respectively, for aerosol-generating segments 5 and 16, similar to Figures 9 and 10.

[0243] (Example 4)

[0244] Aerosol generating segment 5, a cooling section, and a filter section were arranged in series in order from the side furthest from the mouthpiece end, and then rolled with a tipping paper to produce an aerosol generating article 5. It should be noted that when the aerosol generating article is inserted into an electric heating device, the position heated by the heater is set so that a part of the outer periphery of the aerosol generating segment 5 on the downstream side in the direction of the airflow is heated.

[0245] (Examples 5 to 14)

[0246] As shown in Table 5, aerosol generating articles 6 to 15 were prepared in the same manner as in Example 4, except that aerosol generating segment 5 was replaced with aerosol generating segments 6 to 15, respectively.

[0247] Aerosol delivery from aerosol-generating articles 5 to 15 was evaluated by the following method. The results are shown in Table 5.

[0248] Aerosol generating articles 5 to 15 were inserted into an electric heating device (Ploom X manufactured by Japan Tobacco Inc.), the electric heating device was turned on, and a smoking test was started once smoking was possible.

[0249] The smoking test was performed using a 1-port smoking machine manufactured by Borgwaldt for 11 puffs at 30-second intervals under conditions of 55 ml / 2 seconds per puff, and the aerosol was collected on a Cambridge filter for each puff.

[0250] After the smoking test, each Cambridge filter was extracted with 10 ml of ethanol, and the amount of aerosol base (glycerol and propylene glycol) was measured by GC-MS. In addition, from the total amount of aerosol base measured for each Cambridge filter, the sum of the amounts of aerosol base for puffs 1 to 4 was taken as the initial aerosol base delivery amount, and the sum of the amounts of aerosol base for puffs 1 to 11 was taken as the total aerosol base delivery amount.

[0251]

[0252]

[0253]

[0254] A preferred embodiment of the present invention includes the following features.

[0255] (Feature 1)

[0256] As an aerosol-generating segment,

[0257] Includes sheet material and aerosol base, but,

[0258] The sheet material contains pulp, and

[0259] The aerosol generating segment is an aerosol generating segment having a pore volume of 2.0 ml / g or more.

[0260] (Feature 2)

[0261] In feature 1, the sheet material is an aerosol-generating segment having a density of 0.6 g / cm³ or less.

[0262] (Feature 3)

[0263] In feature 1 or feature 2, the sheet material is an aerosol-generating segment having a breathability of 1300 CORESTA units or more.

[0264] (Feature 4)

[0265] In any one of features 1 to 3, the sheet material is an aerosol-generating segment having a drainage capacity of 700 ml or more.

[0266] (Feature 5)

[0267] An aerosol-generating segment, wherein in any one of features 1 to 4, the sheet material has a basis weight of 50 gsm or less.

[0268] (Feature 6)

[0269] An aerosol generating segment, wherein in any one of features 1 to 5, the aerosol base is in the form of a gel at 25°C.

[0270] (Feature 7)

[0271] In any one of features 1 to 6, the aerosol base has a viscosity of 4000 mPa·s or more at 25°C, an aerosol generating segment.

[0272] (Feature 8)

[0273] An aerosol generating segment comprising, in any one of features 1 to 7, a wrapper having an inner surface in contact with a sheet material, wherein the wrapper comprises a coating agent on the inner surface.

[0274] (Feature 9)

[0275] In feature 8, the coating agent comprises an aerosol-generating segment containing a polysaccharide.

[0276] (Feature 10)

[0277] In any one of features 1 to 9, one or more of the sheet materials are an aerosol generating segment that is folded by overlapping so that the fold portion is substantially parallel to the direction of airflow and then packed.

[0278] (Feature 11)

[0279] An aerosol generating segment having an end surface porosity of 80% or less, in any one of features 1 to 10.

[0280] (Feature 12)

[0281] An aerosol-generating segment that does not include tobacco material, in any one of features 1 to 11.

[0282] (Feature 13)

[0283] An aerosol generating segment having, in any one of features 1 to 12, a plurality of channels penetrating in the direction of airflow, and an average cross-sectional area per channel at the end surface of the aerosol generating segment of 0.15 mm² or less.

[0284] (Feature 14)

[0285] An aerosol generating segment, wherein in any one of features 1 to 13, the airflow resistance of the aerosol generating segment in the direction of airflow is 10 to 50 mmH2O.

[0286] (Feature 15)

[0287] In any one of features 1 to 14, the sheet material is an aerosol generating segment having a thickness of 40 to 100 μm.

[0288] (Feature 16)

[0289] An aerosol generating segment, wherein in any one of features 1 to 15, the aerosol base content of the aerosol generating segment is 5 to 100 mg.

[0290] (Feature 17)

[0291] An aerosol-generating segment, wherein in any one of features 1 to 16, the packing density of the sheet material is 0.1 to 0.3 g / cm³.

[0292] (Feature 18)

[0293] An aerosol generating article comprising an aerosol generating segment according to any one of features 1 to 17.

[0294] (Feature 19)

[0295] An aerosol generating article according to feature 18, comprising a leading segment upstream of an aerosol generating segment in the direction of airflow.

[0296] (Feature 20)

[0297] In feature 19, the leading segment is an aerosol generating article that does not contain an aerosol base.

[0298] (Feature 21)

[0299] An aerosol generating article comprising, in any one of features 18 to 20, a tobacco segment comprising tobacco material downstream of the aerosol generating segment in the direction of airflow.

[0300] (Feature 22)

[0301] An aerosol generating article comprising, in any one of features 18 to 21, a tobacco segment containing tobacco material upstream of the aerosol generating segment in the direction of airflow.

[0302] (Feature 23)

[0303] An aerosol generating article according to feature 21 or feature 22, wherein both the aerosol generating segment and the tobacco segment are rod-shaped, and the ratio of the length of the aerosol generating segment in the longitudinal direction to the length of the tobacco segment in the longitudinal direction is 3 / 1 to 1 / 3.

[0304] (Feature 24)

[0305] An aerosol generating article, wherein in any one of features 21 to 23, the tobacco segment comprises an aerosol base, and the mass ratio of the aerosol base content of the aerosol generating segment to the aerosol base content of the tobacco segment is preferably 3 / 1 to 1 / 3.

[0306] (Feature 25)

[0307] An aerosol generating article comprising a plurality of aerosol generating segments according to any one of features 1 to 17.

[0308] (Feature 26)

[0309] An aerosol generating article comprising a cooling section and a filter section downstream of an aerosol generating segment in the direction of airflow, in any one of features 18 to 25.

[0310] (Feature 27)

[0311] An aerosol generating article that is a non-combustible aerosol generating article in any one of features 18 to 26.

[0312] (Feature 28)

[0313] An electric heating aerosol generating system comprising an aerosol generating article according to any one of features 18 to 27 and an electric heating device for heating the aerosol generating article.

[0314] (Feature 29)

[0315] An electric heating aerosol generating system comprising an aerosol generating article according to any one of features 18 to 27, and an electric heating device comprising a heater for heating the aerosol generating article,

[0316] An electric heating aerosol generation system in which a heater is positioned to heat the entire outer periphery of the aerosol generation segment.

[0317] (Feature 30)

[0318] An electric heating aerosol generating system comprising an aerosol generating article according to feature 25, and an electric heating device comprising a heater for heating the aerosol generating article,

[0319] An electric heating aerosol generation system in which a heater is positioned to heat the entire outer periphery of the aerosol generation segment located furthest downstream in the direction of airflow from a plurality of aerosol generation segments.

[0320] (Feature 31)

[0321] An electric heating aerosol generating system comprising an aerosol generating article according to any one of features 21 to 24, and an electric heating device comprising a heater for heating the aerosol generating article,

[0322] An electric heating aerosol generating system in which a heater is positioned to heat the entire outer periphery of a tobacco segment. Explanation of the symbols

[0323] 100: Aerosol-generating items 101: Mouthpiece end 102: Tip end 103: Hole 110: Aerosol generation segment 111: Filler 112: Wrapping paper 120: Cooling section 130: Filter section 140: Tipping paper 150: Filter media 160: Filter Wrapper 170: Additive release container R1: Lip release material placement zone 200: Electric Heated Aerosol Generation System 30: Electric heating aerosol generating device 31: Housing 310: Reception Department 32: Heater 35: Temperature sensor 36: Intake sensor 37: Control unit 38: Power 401: Lead segment 402: Tobacco Segment 411: 1st Aerosol Generation Segment 412: Second aerosol generation segment

Claims

Claim 1 An aerosol generating segment comprising a sheet material and an aerosol base, wherein the sheet material comprises pulp, and the aerosol generating segment has a pore volume of 2.0 ml / g or more. Claim 2 In claim 1, the sheet material is an aerosol-generating segment having a density of 0.6 g / cm³ or less. Claim 3 In claim 1 or 2, the sheet material is an aerosol-generating segment having a breathability of 1300 CORESTA units or more. Claim 4 In any one of claims 1 to 3, the sheet material is an aerosol-generating segment having a drainage capacity of 700 ml or more. Claim 5 An aerosol-generating segment according to any one of claims 1 to 4, wherein the sheet material has a basis weight of 50 gsm or less. Claim 6 An aerosol generating segment according to any one of claims 1 to 5, wherein the aerosol base is in the form of a gel at 25°C. Claim 7 In any one of claims 1 to 6, the aerosol base is an aerosol generating segment having a viscosity of 4000 mPa·s or more at 25°C. Claim 8 An aerosol generating segment according to any one of claims 1 to 7, comprising a wrapper having an inner surface in contact with the sheet material, wherein the wrapper comprises a coating agent on the inner surface. Claim 9 In claim 8, the coating agent comprises an aerosol-generating segment containing a polysaccharide. Claim 10 In any one of claims 1 to 9, one or more of the sheet materials are an aerosol generating segment that is folded over and packed such that the fold portion is substantially parallel to the direction of airflow. Claim 11 An aerosol generating segment according to any one of claims 1 to 10, wherein the end surface porosity of the aerosol generating segment is 80% or less. Claim 12 An aerosol generating segment that does not include tobacco material in any one of claims 1 to 11. Claim 13 An aerosol generating segment according to any one of claims 1 to 12, comprising a plurality of channels penetrating in the direction of airflow, wherein the average cross-sectional area per channel at the end surface of the aerosol generating segment is 0.15 mm² or less. Claim 14 An aerosol generating article comprising an aerosol generating segment according to any one of claims 1 to 13. Claim 15 In claim 14, an aerosol generating article comprising a tip-end segment upstream of the aerosol generating segment in the direction of airflow.

Images