Mouthpiece segment for aerosol generating article, and aerosol generating article provided with mouthpiece segment

Abstract

Provided is a mouthpiece segment for an aerosol generating article, the mouthpiece segment comprising at least a first filter segment and a second filter segment. The first filter segment includes: a first filter medium containing cellulose fibers; and a granular adsorbent that adsorbs carbonyls. The second filter segment includes: a second filter medium containing cellulose fibers; and an absorbent that absorbs phenols. The first filter segment is disposed upstream of the second filter segment in the long-axis direction.

Description

A mouthpiece segment for aerosol products, and an aerosol product comprising the mouthpiece segment. 【0001】 The present invention relates to a mouthpiece segment for aerosol products and an aerosol product comprising the mouthpiece segment. 【0002】 Traditionally, acetate fibers have been widely used as filter media in smoking products such as filtered cigarettes. In recent years, from the perspective of reducing environmental impact, the use of biodegradable materials as filter media in various products has been promoted, and the use of biodegradable materials such as paper filters in smoking products is being considered. However, paper filters have low filtration performance for carbonyl compounds such as aldehydes, and their filtration performance for phenols is lower compared to filters using acetate fibers. Therefore, attempts are being made to impart the function of filtering carbonyl compounds and phenols to paper filters. 【0003】 For example, Patent Document 1 reports a technique for adding a phenol scavenger with a dropping point of 50°C or higher to a filter to impart selective filtration capability for phenol and improve storage stability. 【0004】 International Publication No. 2021 / 001961 【0005】 Patent Document 1 uses a semi-solid additive, and while its phenol reduction ability is sufficient for practical use, there is room for improvement, especially when considering the reduction of carbonyl compounds. Therefore, further improvements are needed regarding the effectiveness of reducing carbonyl compounds and phenols. 【0006】 The object of the present invention is to provide a mouthpiece segment for aerosol products that can sufficiently filter out carbonyls and phenols. 【0007】The present inventors have conducted diligent studies to solve the above problems and have found that by using a mouthpiece segment for aerosol products, wherein the mouthpiece segment comprises a first filter segment and a second filter segment, the first filter segment comprises a first filter material containing cellulose fibers and a granular adsorbent that adsorbs carbonyl compounds, the second filter segment comprises a second filter material containing cellulose fibers and an absorbent that absorbs phenols, and the first filter segment is positioned upstream of the second filter segment in the longitudinal direction, carbonyl compounds and phenols can be sufficiently filtered, thus completing the present invention. In other words, the gist of the present invention is as follows. 【0008】[1] A mouthpiece segment for an aerosol product, wherein the mouthpiece segment comprises at least a first filter segment and a second filter segment, the first filter segment comprising a first filter material containing cellulose fibers and a granular adsorbent for adsorbing carbonyls, the second filter segment comprising a second filter material containing cellulose fibers and an absorbent for absorbing phenols, and the first filter segment is positioned upstream of the second filter segment in the longitudinal direction. [2] The mouthpiece segment according to [1], wherein the first filter material and the second filter material are both sheet materials containing short cellulose fibers. [3] The mouthpiece segment according to [1], wherein the first filter material is a sheet material made of paper and the second filter material is a sheet material made of nonwoven fabric. [4] The mouthpiece segment according to [1], wherein the first filter material and the second filter material are both sheet materials made of paper. [5] The mouthpiece segment according to [1], wherein the first filter material is a sheet material made of nonwoven fabric and the second filter material is a sheet material made of paper. [6] The mouthpiece segment according to [1], wherein both the first filter material and the second filter material are sheet materials made of nonwoven fabric. [7] The mouthpiece segment according to [1], wherein at least one of the first filter material or the second filter material is a tow of cellulose fibers. [8] The mouthpiece segment according to any one of [1] to [7], wherein the absorbent is a polymer compound. [9] The mouthpiece segment according to any one of [1] to [8], wherein the absorbent does not contain synthetic polymers and is liquid, solid, or gel-like at 25°C.

[10] The mouthpiece segment according to any one of [1] to [9], wherein the adsorbent is placed on the first filter material.

[11] The mouthpiece segment according to any one of [1] to [9], wherein the adsorbent is placed inside the first filter material.

[12] The mouthpiece segment according to [1], wherein the second filter material is a sheet material made of a nonwoven fabric containing a binder, and the absorbent is the binder.

[13] The mouthpiece segment according to any one of [1] to

[12] , wherein the first filter segment does not contain the absorbent.

[14] The mouthpiece segment according to [1] or [2], wherein the first filter segment further contains an absorbent that absorbs phenols, the absorbent being a polymer compound or a solid.

[15] The mouthpiece segment according to

[14] , wherein the first filter material is a nonwoven fabric containing a binder.

[16] The mouthpiece segment according to

[15] , wherein the binder is the polymer compound.

[17] The mouthpiece segment according to

[16] , wherein the polymer compound is an ethylene-vinyl acetate copolymer, polyvinyl acetate, vinyl acetate acrylic copolymer, or a mixture thereof.

[18] An aerosol product comprising an aerosol generating segment and the mouthpiece segment according to any one of [1] to

[17] .

[19] An aerosol product comprising an aerosol generating segment, a mouthpiece segment according to any one of [1] to

[17] , and an intermediate segment between the aerosol generating segment and the mouthpiece segment. 【0009】 According to the present invention, a mouthpiece segment for aerosol products that can sufficiently filter out carbonyls and phenols can be provided. 【0010】 This is a schematic diagram showing a first example of the configuration of an aerosol product according to an embodiment of the present invention. This is a schematic diagram showing a second example of the configuration of an aerosol product according to an embodiment of the present invention. This is a schematic diagram showing a third example of the configuration of an aerosol product according to an embodiment of the present invention. This is a schematic diagram showing an example of the configuration of a mouthpiece segment according to an embodiment of the present invention. This is a schematic diagram of a non-combustion type aerosol generation system according to an embodiment of the present invention. This is a diagram comparing the relative delivery amounts (filtration capacity) of carbonyls and phenols of mouthpiece segment samples prepared in the experimental example. 【0011】Embodiments of the present invention will be described in detail below, but these descriptions are examples (representative examples) of embodiments of the present invention, and the present invention is not limited to these contents unless it exceeds the gist of the invention. In this specification, numerical ranges expressed using "~" mean a range that includes the numbers written before and after "~" as the lower and upper limits, and "A~B" means A or more and B or less. In this specification, the expression "A or B" may be read as "at least one selected from the group consisting of A and B". In this specification, multiple embodiments will be described, and various conditions in each embodiment can be applied to each other to the extent that they are applicable. In addition, in some figures in the drawings, the X, Y, and Z directions are shown, but the left-right direction is the X direction, the up-down direction is the Y direction, and the depth direction is the Z direction, while the left-right direction is the X direction, the up-down direction is the Y direction, and the depth direction is the Z direction, while the right-left direction is the X direction, the up-down direction is the Y direction, and the depth direction is the Z direction, while the right-left direction is the Y direction, and the down-down direction is the Z direction, while the down-down direction is the Z direction, while the left-right direction is the Y direction, and the down-down direction is the Z direction, while the down-down direction is the Z direction, while the right-left direction is the Y direction, and the down-down direction is the Z direction, while the down-down direction is the Z direction, while the up-down direction is the Y direction. In addition, in some figures in the drawings, the elements of the non-combustible aerosol generation system are not limited to being arranged in the directions shown in the drawings. 【0012】 The aerosol product according to this embodiment will be described below with reference to the figures, but this embodiment is not limited to this form. In this specification, figures may be used to describe each embodiment, but the descriptions of each embodiment and the dimensions, materials, shapes, and relative positions of the components shown in the figures are examples only. 【0013】<Aerosol Product> An aerosol product according to one embodiment of the present invention (hereinafter also simply referred to as "aerosol product") is an aerosol product comprising a specific filter segment described later. An example of the aerosol product is an aerosol product comprising a specific mouthpiece segment and an aerosol generating segment described later. The aerosol product may also have an intermediate segment between the mouthpiece segment and the aerosol generating segment. Details of each segment will be described later. The mouthpiece segment includes a filter segment as a component. The manner of use of the aerosol product according to this embodiment is not particularly limited, and the aerosol product may be an electrically heated aerosol product, a non-combustible aerosol product, or a cigarette (paper-wrapped cigarette). An example of the aerosol product 100 according to this embodiment is a substantially cylindrical rod shape. In the example shown in Figures 1 to 3, the aerosol product 100 includes an aerosol generating segment 110, an intermediate segment 120, a mouthpiece segment 130, and a tip paper 140 that integrally connects these. The intermediate segment 120 and the mouthpiece segment 130 are connected coaxially with the aerosol generating segment 110 by being wound together with the aerosol generating segment 110 on tip paper 140. When the aerosol product 100 according to this embodiment is used as a cigarette, it may have an intermediate segment 120, but since cigarettes generally do not have an intermediate segment, it can be used in a form in which the aerosol generating segment 110 is extended to the region where the intermediate segment 120 would normally be located, without the intermediate segment 120 (Figure 3). 【0014】Reference numeral 101 denotes the mouthpiece end of the aerosol product 100 (mouthpiece segment 130). Reference numeral 102 denotes the tip of the aerosol product 100 opposite to the mouthpiece end 101. The aerosol generating segment 110 is located on the tip 102 side of the aerosol product 100. In the examples shown in Figures 1 to 3, the aerosol product 100 has a substantially constant diameter along its entire length in the longitudinal direction (hereinafter also referred to as the longitudinal axis direction or Z direction) from the mouthpiece end 101 to the tip 102. Here, the downstream side in the longitudinal axis direction refers to the mouthpiece end side, and the upstream side in the longitudinal axis direction refers to the tip side. 【0015】 The configuration of the aerosol product 100 is not particularly limited and can be in a general form. In the embodiment shown in Figure 1, the aerosol generation segment 110, the intermediate segment 120, and the mouthpiece segment 130 are each shown as single segments, but the mouthpiece segment is composed of at least two segments, and each of the other segments may be composed of one or more segments. For example, in the embodiments shown in Figures 2 and 3, the mouthpiece segment 130 is composed of a first filter segment 130a and a second filter segment 130b. Also, in the embodiment shown in Figure 2, the tip segment 113 is arranged adjacent to the aerosol generation segment. Although the mouthpiece segment in Figures 2 and 3 includes two segments, the embodiment is not limited to this, and the mouthpiece segment may include three or more segments, for example, three, four, or five segments. In these embodiments, the first filter segment and the second filter segment are configured such that the first filter segment is positioned on the upstream side in the longitudinal direction. When the mouthpiece segment consists of two segments, the aerosol product 100 includes a first filter segment 130a containing cellulose fibers and a granular adsorbent that adsorbs carbonyl compounds, and the second filter segment 130b containing cellulose fibers and an absorbent that absorbs phenols. 【0016】 The airflow resistance in the longitudinal direction per aerosol product 100 is not particularly limited, but from the viewpoint of ease of inhalation, it is usually 10 mmH２ It is 0 or greater, and 20 mmH ２ Preferably, it is 0 or higher, and 30 mmH ２ It is more preferable that the temperature is 0 or higher, and usually 200 mmH ２ It is less than or equal to 0 and 100 mmH ２ Preferably, it should be 0 or less, and 60 mmH ２ It is more preferable that the value be 0 or less. The airflow resistance is measured according to the ISO standard method (ISO 6565:2015). 【0017】 The cross-sectional shape of the aerosol product 100 is not particularly limited and may be polygonal, rounded polygonal, circular, or elliptical. In this specification, "cross-section" refers to the surface extending in the X-axis and Y-axis directions of Figure 1. The length of the aerosol product 100 in the longitudinal direction is not particularly limited, for example, it is usually 40 mm or more, preferably 45 mm or more, and more preferably 50 mm or more. It is also usually 100 mm or less, preferably 90 mm or less, and more preferably 80 mm or less. The width (diameter if the cross-sectional shape is circular) of the tip 102 of the aerosol product 100 is not particularly limited, for example, it is usually 5 mm or more, preferably 5.5 mm or more. It is also usually 10 mm or less, preferably 9 mm or less, and more preferably 8 mm or less. 【0018】 <Aerosol-generating segment> The aerosol-generating segment 110 according to one embodiment of the present invention is not particularly limited as long as it contains tobacco raw materials. For example, the aerosol-generating segment can be a tobacco filling 111 (hereinafter, the fillings containing the sheet material and other materials that are filled into the aerosol-generating segment 110 may be collectively referred to simply as "tobacco fillings") which is wrapped in a wrapping paper (wrapper) 112. 【0019】The wrapping paper (wrapper) 112 that wraps the aerosol generation segment is preferably coated on the inside. There is no particular limitation on the coating agent, but a coating agent that can form a film on the surface of the paper and reduce the liquid permeability is preferred. By coating the inside of the wrapping paper 112, even when the amount of the aerosol base material contained in the aerosol generation segment is large, the penetration of the aerosol base material into the wrapping paper 112 can be suppressed. Also, the aerosol generation segment 110 may have a fitting portion with a heater member or the like for heating the aerosol generation article 100. 【0020】 The length of the aerosol generation segment 110 in the major axis direction can be appropriately changed according to the size of the product, but it is usually 5 mm or more, preferably 7 mm or more, more preferably 10 mm or more. Also, it is usually 70 mm or less, preferably 50 mm or less, more preferably 30 mm or less, and even more preferably 25 mm or less. 【0021】 The ventilation resistance of the aerosol generation segment 110 is usually 0.1 mmHg ２ O / mm to 20 mmHg ２ O / mm, preferably 0.5 mmHg ２ O / mm to 15 mmHg ２ O / mm, more preferably 1.0 mmHg ２ O / mm to 10 mmHg ２ O / mm. The method for measuring the ventilation resistance of the aerosol generation segment is the same as the method for measuring the ventilation resistance of the aerosol generation article described above. 【0022】The tobacco filling 111 may contain an aerosol base material that generates an aerosol. The type of aerosol base material is not particularly limited, and various natural extracts and / or their components can be selected depending on the application. Examples of aerosol base materials include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof. The content of the aerosol base material in the tobacco filling 111 is not particularly limited, but from the viewpoint of generating a sufficient aerosol and imparting a good flavor, it is usually 5% by weight or more, preferably 10% by weight or more, and usually 50% by weight or less, preferably 15% by weight or more and 25% by weight or less, relative to the total amount of the tobacco filling. The tobacco filling 111 may also contain a flavoring. If the aerosol product 100 is a cigarette, the tobacco filling 111 does not need to contain an aerosol base material. 【0023】 <Sheet material contained in the aerosol-generating segment> The sheet material is not particularly limited as long as it contains tobacco raw materials, and known materials can be used. The amount of tobacco raw materials (e.g., dried tobacco leaves) contained in the aerosol-generating segment 110 is not particularly limited, but can be between 200 mg and 800 mg, and preferably between 250 mg and 600 mg. This range is particularly suitable for an aerosol-generating segment 110 with a circumference of 22 mm and a length of 20 mm. 【0024】The method of filling the aerosol generating segment 110 with the sheet material is not particularly limited. For example, the sheet material may be wrapped in a wrapper 112, or the sheet material may be filled into a tubular wrapper 112. If the shape of the aerosol generating segment 110 is a substantially rectangular parallelepiped with a longitudinal direction, the aerosol generating segment 110 may be filled in such a way that its longitudinal direction is in an unspecified direction within the wrapper 112, or it may be filled in an aligned manner so that it is aligned along the longitudinal axis of the aerosol generating segment 110 or perpendicular to the longitudinal axis. For example, the sheet material may be cut into widths of 0.5 mm to 2.0 mm (lengths of, for example, 5 mm to 40 mm) and filled in a random orientation, or the sheet material may be cut into widths of 1.0 mm to 3.0 mm (lengths of, for example, 5 mm to 40 mm) and filled in an aligned manner parallel to the longitudinal axis, or the sheet material may be crimped (processed to create vertical grooves) and then gathered and filled. When the aerosol generating segment 110 is heated, the tobacco components contained in the aerosol generating segment 110 vaporize, and upon inhalation, these vaporize and transfer to the intermediate segment 120 and the mouthpiece segment 130. 【0025】 The width of the sheet material depends on the size and shape of the aerosol generating segment 110. For example, if the aerosol generating segment 110 is a rod shape with a major axis length of 14 mm and a diameter of 7 mm, the width is usually 50 mm to 250 mm, more preferably 100 mm to 200 mm, and even more preferably 140 mm to 160 mm. If the width of the sheet material is within the above range, sufficient aerosol can be generated. 【0026】<Tip Segment> The aerosol generating article 100 may include a tip segment 113 adjacent to the upstream side in the major axis direction of the aerosol generating segment 110 as shown in FIG. 2, for example. The tip segment 113 may have a filler 114 inside and may be wound by a wrapper paper 112 (tip segment wrapper). The filler 114 can include cellulose acetate fibers, natural pulp fibers, etc. Preferably, the filler 114 preferably contains paper. The tip segment 113 may further contain an aerosol substrate, a fragrance, or the like. When the tip segment 113 contains an aerosol substrate, the tip segment 113 also constitutes a part of the aerosol generating segment. By providing the tip segment 113, it is possible to suppress the spillage of the filler 111 from the aerosol generating segment 110. In FIG. 2, the aerosol generating segment 110 and the tip segment 113 are wound and connected by a tip paper 140a (second tip paper). Further, the two connected segments, the intermediate segment 120, and the mouthpiece segment 130 are wound and connected by a tip paper 140 (first tip paper). 【0027】 The cross-sectional shape of the tip segment 113 is substantially circular, and the diameter of the circle can be appropriately changed according to the size of the product. The length of the tip segment 113 in the major axis direction can be appropriately changed according to the size of the product, but is usually 3 mm or more and 15 mm or less, and preferably 5 mm or more and 10 mm or less. 【0028】 <Mouthpiece Segment> An embodiment of the present invention is a mouthpiece segment for an aerosol generating article, which at least includes a first filter segment and a second filter segment disposed on the downstream side in the major axis direction thereof. The first filter segment includes a first filter material containing cellulose fibers and a granular adsorbent for adsorbing carbonyls, and the second filter segment includes a second filter material containing cellulose fibers and an absorbent for absorbing phenols. The following will be described based on the configuration of FIG. 2. 【0029】The mouthpiece segment for aerosol products of this embodiment comprises at least a first filter segment 130a. The first filter segment 130a includes a first filter material 150a containing cellulose fibers and a granular adsorbent (not shown) that adsorbs carbonyl compounds. The mouthpiece segment for aerosol products of this embodiment also comprises at least a second filter segment 130b. The second filter segment 130b includes a second filter material 150b containing cellulose fibers and an absorbent (not shown) that absorbs phenols. 【0030】 The first filter material 150a and the second filter material 150b are described below. In the following, unless otherwise specified, the conditions that can be commonly applied to the sheet material or tow used as the first filter material 150a and the second filter material 150b are described. Therefore, matters described simply as "filter material" below can be applied to either the first filter material 150a or the second filter material 150b. The cellulose fibers contained in the filter material are preferably natural cellulose fibers or regenerated cellulose fibers. Natural cellulose fibers are not particularly limited as long as they can be obtained from plants, for example. Suitable natural cellulose fibers include, for example, those obtained from flax, bagasse, esparto, straw, cotton, papyrus, bamboo, jute, hardwood, or softwood. Natural cellulose fibers may be obtained from two or more sources. For example, they may be obtained from several types of wood. Examples of regenerated cellulose fibers include one or more selected from the group consisting of rayon, polynosic, cupro, and lyocell. 【0031】As the filter medium, it is possible to use a material obtained by processing a tow of cellulose fibers into a cylindrical shape. A tow of cellulose fibers is a collection of a large number of long cellulose fibers formed into a flat带状 bundle. When using a tow of cellulose fibers as the filter medium, it is easy to hold the adsorbent within the filter medium. The single fiber fineness and total fineness of the tow of cellulose fibers are not particularly limited, but in the case of a filter medium with a circumference of 22 mm, the single fiber fineness is preferably 1 g / 9000 m or more and 20 g / 9000 m or less, and the total fineness is preferably 10000 g / 9000 m or more and 60000 g / 9000 m or less. Also, from the perspective of ensuring the hardness of the filter at a low filling amount, it is desirable that the long cellulose fibers are subjected to a crimping process. The number of crimps can be 15 to 60 counts / inch, and preferably 20 to 35 counts / inch. If the number of crimps is small, it becomes difficult to improve the hardness of the filter at a low filling amount. On the other hand, if the number of crimps is large, there is a risk that the fibers will break during high-speed manufacturing of the filter. When using a tow of cellulose fibers, it is preferable to add a binder to maintain the hardness of the filter medium. As the binder, either synthetic polymers or natural polymers can be used, but it is preferable to use a natural polymer binder. Examples of the natural polymer binder include one or more selected from the group consisting of starch, alginate, carrageenan, and guar gum. The tow of cellulose fibers is composed of continuous fibers and is composed of fibers different from the short cellulose fibers described later. 【0032】 Examples of the filter medium include a sheet material containing short cellulose fibers, and the average length of the cellulose fibers can be 1 mm to 150 mm. Examples of such a sheet material containing short cellulose fibers include paper and non-woven fabric. When the sheet material is paper, the average length of the cellulose fibers may be 1 mm to 10 mm, or may be 1.5 mm to 5 mm. When the sheet material is a non-woven fabric, the average length of the cellulose fibers may be 5 mm to 150 mm, or may be 10 mm to 100 mm. 【0033】The width of the sheet material containing short cellulose fibers is not particularly limited, but is usually 50 mm or more, preferably 90 mm or more, more preferably 100 mm or more, and also 300 mm or less, preferably 280 mm or less, and more preferably 250 mm or less. The width of the sheet material is, for example, the length in the direction perpendicular to the long axis in which the peaks and valleys are continuously arranged in paper or nonwoven fabric having a wave-shaped structure. In other words, it is the length in the direction perpendicular to the direction corresponding to the long axis of the filter material obtained by processing paper having a wave-shaped structure. 【0034】 When the sheet material is paper, it contains pulp, and its water filtration rate is typically 200 mL to 1000 mL. Preferably, it is 500 mL to 1000 mL, and more preferably 700 mL to 1000 mL. By using a sheet material containing pulp with such water filtration rate, pulp fuzzing is reduced, and entanglement between fibers is reduced. When the sheet material is paper, it tends to be thinner than nonwoven fabric, allowing for a wider sheet width to be filled as a filter material. When the sheet material is paper, it tends to hold the externally added adsorbent better than nonwoven fabric. Also, when the sheet material is paper, the filtration rate of aerosol particulate matter is slightly higher than that of nonwoven fabric. Furthermore, when the sheet material is paper, it is easier to achieve lower filtration than with nonwoven fabric for the same hardness. This is because when the sheet material is paper, low air permeability resistance can be achieved. 【0035】When the sheet material is paper, the water filtration rate of the pulp contained in the sheet material is the value measured after the paper of the sheet material has been disintegrated and returned to a fibrous state, and is specifically measured by the following procedure. First, the sheet material is disintegrated according to JIS P 8220-1. Then, the water filtration rate of the obtained pulp suspension is measured according to JIS P 8121-2. If disintegration of the sheet material is difficult with ordinary water, disintegration may be performed with a 4% sodium hydroxide aqueous solution, followed by washing with water. This process may be repeated multiple times (for example, three times) until the sheet material is disintegrated. To adjust the water filtration rate of the sheet material to within the above range, the raw materials of the sheet material should be appropriately selected, and the manufacturing method should be adjusted. For example, the type of pulp, fiber length, and amount used as the raw material for the sheet material, as well as the type and amount of filler, should be adjusted, and the degree of beating during manufacturing, the papermaking method, and the press pressure should also be adjusted. The paper used for the filter material can be manufactured using either a wet or dry method, and can be selected as desired. 【0036】 When paper is used as a sheet material, the air permeability of the sheet material is not particularly limited, but it is preferably 3,000 cholesta units or more. There is no particular upper limit, but it is usually 40,000 cholesta units or less. An air permeability of 3,000 cholesta units or more is preferable, for example, when used as a second filter material 150b, from the viewpoint of further improving the filtration capacity of phenols. When paper is used as a sheet material, the air permeability is more preferably 3,500 to 30,000 cholesta units, and even more preferably 10,000 to 25,000 cholesta units. This is particularly preferable when used as a second filter material 150b. To adjust the water permeability and air permeability of the sheet material when paper is used as a sheet material to within the above range, the raw materials of the sheet material can be appropriately selected, and the manufacturing method can be adjusted. For example, the type of pulp, fiber length, and amount used as the raw material for the sheet material, as well as the type and amount of filler, can be adjusted, and the degree of beating during manufacturing, the papermaking method, and the press pressure can also be adjusted. 【0037】When paper is used as the sheet material, the thickness of the sheet material is not particularly limited, but is usually 20 μm or more, preferably 25 μm or more, more preferably 30 μm or more, and usually 140 μm or less, preferably 130 μm or less, and more preferably 120 μm or less. When paper is used as the sheet material, the basis weight of the sheet material is not particularly limited, but is usually 20 gsm or more, preferably 25 gsm or more, and usually 60 gsm or less, preferably 50 gsm or less, and more preferably 45 gsm or less. The density of the sheet material is 0.25 to 0.4 g / cm³. ３ This may also be the case. Furthermore, when paper is used as a sheet material, the basis weight of the sheet material can be adjusted by adjusting the pulp content and filler content, or by adjusting the processing conditions of the wet paper machine used during papermaking. 【0038】 When the sheet material is a nonwoven fabric, the nonwoven fabric can be configured such that short cellulose fibers are bonded together mechanically, chemically, or by a binder. The nonwoven fabric is preferably a dry-laid nonwoven fabric. Methods for manufacturing nonwoven fabrics are well known. When a nonwoven fabric is used as the sheet material, the vertical cross-section in the circumferential direction of the segment has fewer pores and a good appearance. The basis weight of the nonwoven fabric is usually 40 to 65 gsm, preferably 45 to 60 gsm, and more preferably 46 to 58 gsm. The volume density of the nonwoven fabric is usually 30 mg / cm³. ３ More than 200mg / cm ３ Preferably, 40 mg / cm³ ３ More than 150mg / cm ３ More preferably, 50 mg / cm³ ３ 120mg / cm or more ３ The following is more preferable: 70 mg / cm² ３ 110mg / cm or more ３The following applies. Furthermore, if the nonwoven fabric is bound by a binder, that is, if the nonwoven fabric contains a binder, it is preferable that the binder is present in an amount of 7 to 10% by weight of the nonwoven fabric. On the other hand, it is preferable that cellulose fibers constitute 90% or more and 93% by weight of the nonwoven fabric. As the binder, one or more can be selected from the group consisting of ethylene-vinyl acetate copolymer, polyvinyl acetate, vinyl acetate acrylic copolymer; cellulose derivatives such as ethylcellulose, methylcellulose, hydroxyethylcellulose, and hydroxymethylcellulose; and polysaccharides such as carboxymethylcellulose, dextrin, and starch. In particular, ethylene-vinyl acetate copolymer, polyvinyl acetate, and vinyl acetate acrylic copolymer also function as absorbents that absorb phenols. Therefore, ethylene-vinyl acetate copolymer, polyvinyl acetate, vinyl acetate acrylic copolymer, or mixtures thereof may be used as a binder. When nonwoven fabric is used as a sheet material, the sheet material typically has a thickness of 0.2 to 1.5 mm, preferably 0.2 to 1.2 mm, more preferably 0.3 to 1.0 mm, and even more preferably 0.3 to 0.9 mm, when there is no load in the thickness direction. 【0039】The filter material can take the form of a collection of sheet materials. For example, it can take the form of a collection of paper or nonwoven fabric having a wave-shaped structure with multiple valleys and ridges, or paper or nonwoven fabric that has been crimped on a filter manufacturing machine to create a wave-like structure. When using paper with a wave-shaped structure, the orientation of the valleys (or ridges) in the length direction is arranged to be parallel to the long axis direction of the filter. When using paper or nonwoven fabric with the above-mentioned wave-shaped structure as the sheet material, it is preferable that one or more sheets are crimped and folded in an overlapping manner so that the folds are substantially parallel to the long axis direction, and then wound onto a mouthpiece wrapper. This configuration improves the moldability of the filter, makes it easier to hold the adsorbent in the first filter segment 130a, and allows for good contact between the aerosol and the absorbent during use in the second filter segment 130b. The crimp depth is preferably 0.1 mm to 1 mm, and more preferably 0.3 mm to 0.9 mm. Furthermore, the crimp spacing is preferably 0.5 mm to 5 mm, and more preferably 1 mm to 3 mm. Also, the crimp depth of the first filter material 150a of the first filter segment 130a and the crimp depth of the second filter material 150b of the second filter segment 130b may be different, and the crimp depth of the second filter material 150b of the second filter segment 130b may be deeper than the crimp depth of the first filter material 150a of the first filter segment 130a. Also, the crimp spacing of the first filter material 150a of the first filter segment 130a and the crimp spacing of the second filter material 150b of the second filter segment 130b may be different, and the crimp spacing of the first filter material 150a of the first filter segment 130a may be wider than the crimp spacing of the second filter material 150b of the second filter segment 130b. The deeper the crimp depth of the sheet material and the narrower the crimp spacing, the more uniformly the sheet material can be distributed within the segment, and furthermore, the more uniformly the adsorbent and absorbent can be distributed within the segment. 【0040】The following describes preferred combinations of the first filter material 150a and the second filter material 150b. (1) Both the first filter material 150a and the second filter material 150b are sheet materials containing short cellulose fibers. With this combination, it is easier to maintain the hardness of the mouthpiece segment 130 than when the filter material is composed of cellulose fiber tows. (2) The first filter material 150a is a sheet material made of paper, and the second filter material 150b is a sheet material made of nonwoven fabric. With this combination, for example, it is easier to stably hold the adsorbent placed on the first filter material 150a within the first filter segment 130a, and paper that has been pre-added (internally added) to the first filter material 150a can be used. In addition, the appearance of the mouthpiece end face of the second filter material 150b can be improved. (3) Both the first filter material 150a and the second filter material 150b are sheet materials made of paper. With this combination, for example, it is easier to ensure the hardness of the mouthpiece segment 130. (4) The first filter material 150a is a sheet material made of nonwoven fabric, and the second filter material 150b is a sheet material made of paper. With this combination, for example, when the adsorbent is added to the first filter material 150a in advance (internal addition), a large amount of adsorbent can be added, and the adsorbent can be stably held within the first filter material 150a, preventing the adsorbent from falling out of the first filter segment. (5) Both the first filter material 150a and the second filter material 150b are sheet materials made of nonwoven fabric. With this combination, for example, when the adsorbent is added to the first filter material 150a in advance (internal addition), a large amount of adsorbent can be added, and the adsorbent can be stably held within the first filter material 150a, preventing the adsorbent from falling out of the first filter segment. Furthermore, the appearance of the inlet-side end face of the second filter material 150b can be improved. (6) At least one of the first filter material 150a or the second filter material 150b is a cellulose fiber tow. Tows allow for more uniform distribution of adsorbents and absorbents than sheet materials. The first filter material 150a and the second filter material 150b may both be cellulose fiber tows. The first filter material 150a may be a cellulose fiber tow, and the second filter material 150b may be a sheet material made of paper.The first filter material 150a may be a tow of cellulose fibers and the second filter material 150b may be a sheet material made of nonwoven fabric. The first filter material 150a may be a sheet material made of paper and the second filter material 150b may be a tow of cellulose fibers. The first filter material 150a may be a sheet material made of nonwoven fabric and the second filter material 150b may be a tow of cellulose fibers. If the second filter material 150b is a tow of cellulose fibers, the appearance of the end face on the intake side can be improved. 【0041】 <Granular Adsorbent for Adsorbing Carbonyls> The granular adsorbent contained in the first filter segment 130a is not particularly limited as long as it adsorbs carbonyls such as aldehydes represented by crotonaldehyde, for example, but can be one or more porous materials selected from the group consisting of activated carbon, hydrotalcite, silica gel, zeolite, and alumina. The average diameter of the porous material can be, for example, 0.1 to 4.0 mm. As for activated carbon, for example, those made from wood, bamboo, coconut shells, walnut shells, coal, etc. can be cited. Furthermore, as for the activated carbon, the BET specific surface area is 600 m². ２ / g or more 1800m ３ A material with a concentration of 0.1 / g or less can be used, and the BET specific surface area can be determined by the nitrogen gas adsorption method (BET multipoint method). Furthermore, the activated carbon can be one with a pore volume of 400 μL / g or more and 800 μL / g or less. The pore volume can be calculated from the maximum adsorption amount obtained using the nitrogen gas adsorption method. The granular adsorbent is different from the absorbent that absorbs phenols, which will be described later. Furthermore, the granular adsorbent and the absorbent may coexist in the same segment, but it is preferable that they do not coexist. In other words, it is preferable that the first filter segment 130a does not contain the absorbent. For example, if the adsorbent and the absorbent coexist in the first filter segment 130a, the absorbent tends to adsorb into the pores of the adsorbent, which reduces the performance of the adsorbent. 【0042】On the other hand, if the absorbent does not impair the function of the adsorbent, for example, if the absorbent is a polymer or a solid, the granular adsorbent and the absorbent may coexist within the same segment. In this case, the first filter segment 130a may further contain, for example, a polymer compound or a solid as an absorbent that absorbs phenols, as described later. In this case, it is preferable that the first filter segment 130a is a sheet material made of nonwoven fabric as the first filter material 150a, and it is preferable that the nonwoven fabric contains a binder. The binder is preferably a polymer compound, and may be of the same type as the polymer compound used as the absorbent. Examples of polymer compounds for the binder include ethylene-vinyl acetate copolymer, polyvinyl acetate, vinyl acetate acrylic copolymer, or mixtures thereof. In this case, the absorbent contained in the first filter segment may be the same as the binder contained in the nonwoven fabric, for example, both may be polymer compounds, and different polymer compounds may be used as the absorbent or binder, respectively. As a specific embodiment, the first filter segment 130a is a sheet material made of nonwoven fabric as the first filter medium 150a, the nonwoven fabric contains a binder, and the first filter segment 130a further contains a granular adsorbent. In this embodiment, the first filter segment 130a contains an absorbent, which may be the same as the binder contained in the nonwoven fabric, in which case the binder contained in the nonwoven fabric also plays the role of an absorbent. For this reason, the absorbent contained in the first filter segment 130a may be only the binder contained in the nonwoven fabric, or an absorbent identical to or different from the binder contained in the nonwoven fabric may be added separately. 【0043】The amount of adsorbent that adsorbs carbonyl compounds added is preferably 5 to 90 mg per first filter segment 130a, and more preferably 10 to 80 mg, in order to facilitate addition during manufacturing and to suppress shedding from the first filter segment 130a. The adsorbent may be pre-disposed inside the first filter material 150a of the first filter segment 130a, or it may be placed on top of the first filter material 150a of the first filter segment 130a, i.e., externally added. Pre-disposing the adsorbent inside the first filter material 150a means that the adsorbent is included at the same time as the manufacturing of the first filter material 150a, and in this specification, this is also called internal addition. Furthermore, the first filter segment 130a may contain both filter material with internally added adsorbent and filter material without internally added adsorbent. 【0044】<Absorbents for absorbing phenols> There are no particular restrictions on the absorbents for absorbing phenols, as long as they absorb phenols, and known absorbents can be used. Phenols also include compounds other than phenols, such as o-cresol, m-cresol, and p-cresol. Absorbents with a vapor pressure of 0.3 Pa (25°C) or less are preferred. Examples of absorbents include one or more polymer compounds selected from the group consisting of polyalkylene glycol, polyvinyl acetate, ethylene-vinyl acetate copolymer, vinyl acetate acrylic copolymer, and hydroxypropyl cellulose, and natural polymer compounds, and one or more selected from the group consisting of triacetin, triethyl citrate, medium-chain fatty acid triglycerides, sucrose fatty acid esters, propylene glycol, hexadecyl lactate, monocaprylin, monolaurin, and monocaprin. Among these, one or more selected from the group consisting of triethyl citrate, polyalkylene glycol, medium-chain fatty acid triglycerides, and sucrose fatty acid esters are preferred. Examples of polyalkylene glycols include one or more selected from the group consisting of polyethylene glycol, polypropylene glycol, polybutylene glycol, and their glycerol esters. The weight-average molecular weight (Mw) of these is not particularly limited and may be, for example, 500 or more and 100,000 or less. Examples of medium-chain fatty acid triglycerides include those with 8 to 10 carbon atoms in the fatty acid. A specific example of a sucrose fatty acid ester isobutyric acid sucrose acetate. The absorbent may not contain synthetic polymer compounds such as polyalkylene glycol, polyvinyl acetate, ethylene-vinyl acetate copolymer, vinyl acetate acrylic copolymer, and hydroxypropyl cellulose, even among the polymer compounds mentioned above. Examples of polymer compounds other than synthetic polymers include natural polymer compounds, such as one or more selected from the group consisting of starch, alginate, carrageenan, and guar gum. The absorbent may also be in liquid, solid, or gel form at room temperature (25°C). "Gel-like" refers to a state in which a system exhibits solid-like properties due to its high viscosity and loss of fluidity.Specifically, the composition is such that, after being placed in a container such as a vial, the composition does not diffuse to the entire side of the container that is on the bottom after being placed on its side, and this state can be confirmed visually. As an example of a gel-like absorbent, an absorbent that becomes gel-like at room temperature can be prepared by mixing an absorbent and a thickener. As the thickener, one or more that can form a three-dimensional network structure (gelling) is preferred, for example, one or more selected from the group consisting of agar, gellan gum, tamarind gum, and guar gum, with agar being particularly preferred. The weight mixing ratio of the absorbent and the thickener is, for example, 99 / 1 to 90 / 10. As a solid absorbent, for example, one or more selected from the group consisting of hexadecyl lactate, monocaprylin, monolaurin, and monocaprin can be mentioned. 【0045】 When the second filter material 150b is a sheet material made of nonwoven fabric, the absorbent may be the binder of the nonwoven fabric as described above, and the binder can be the same as the binder used to bond the nonwoven fabric. For example, polyvinyl acetate and ethylene-vinyl acetate copolymer can be used in combination as the absorbent. This combination is particularly preferable when a sheet material made of nonwoven fabric is used as the second filter material. The amount of absorbent that absorbs phenols added is preferably 5 to 40 mg per second filter segment 130b, and more preferably 8 to 25 mg, in order to facilitate addition during manufacturing and to prevent leakage from the second filter segment 130b. The absorbent that absorbs phenols may be pre-included in the second filter material 150b of the second filter segment 130b. The same content as above can be applied when the first filter segment 130a contains the absorbent. 【0046】<Mouthpiece Segment Morphology and Shape> The mouthpiece segment 130 is not particularly limited, and as described above, it comprises at least a first filter segment 130a and a second filter segment 130b, and the first filter segment 130a is not particularly limited as long as it is positioned upstream of the second filter segment 130b in the longitudinal direction. In addition to these segments, it can be a multi-segment filter including multiple segments such as a triple filter which has another segment. Furthermore, each segment may be provided with a material such as a capsule that contains fragrance or the like. Various forms of mouthpiece segments will be described with reference to Figure 4. Note that in Figure 4, wrappers such as segment wrappers that wind each segment are omitted. Figure 4(a) shows a form in which a capsule is provided inside the second filter material 150b that constitutes the second filter segment 130b. Figure 4(b) shows a form in which another segment (a hollow segment in the figure) is provided on the mouthpiece end side of the second filter segment 130b. Figure 4(c) shows a configuration in which a capsule is provided inside the second filter material 150b constituting the second filter segment 130b, and another segment (a hollow segment in the figure) is provided on the inlet end side of the second filter segment 130b. Figure 4(d) shows a configuration in which another segment (a hollow segment in the figure) is provided between the first filter segment 130a and the second filter segment 130b. Figure 4(e) shows a configuration in which another segment (a cavity structure in the figure) is provided between the first filter segment 130a and the second filter segment 130b. Figure 4(f) shows a configuration in which another segment (a cavity structure in the figure) is provided between the first filter segment 130a and the second filter segment 130b, and a capsule is provided within that other segment. Figure 4(g) shows a configuration in which another segment (a filter material composed of, for example, a tow in the figure) is provided on the inlet end side of the second filter segment 130b, and a capsule is provided within that other segment.Figure 4(h) shows a configuration in which another segment (in the figure, a filter material consisting of, for example, a tow) is provided on the upstream side of the first filter segment 130a in the longitudinal direction. With this configuration, it is possible to prevent the adsorbent placed on the first filter segment 130a from dissipating to, for example, an intermediate segment (not shown here) located on the upstream side in the longitudinal direction. Figure 4(i) shows a configuration in which another segment (in the figure, a filter material consisting of, for example, a tow) is provided on the mouthpiece end side of the second filter segment 130b. With this configuration, it is possible to prevent the absorbent material of the second filter segment 130b from adhering to the manufacturing equipment during the manufacturing of the mouthpiece segment. 【0047】 The cross-sectional shape of the mouthpiece segment in the direction perpendicular to the major axis is substantially circular, and the diameter of the circle can be appropriately changed according to the size of the product, but is usually 4.0 mm or more, preferably 4.5 mm or more, more preferably 5.0 mm or more, and usually 9.0 mm or less, preferably 8.5 mm or less, more preferably 8.0 mm or less. The length of the mouthpiece segment in the direction of the major axis can be appropriately changed according to the size of the product, but may be 5 mm or more, 10 mm or more, 15 mm or more, 17.5 mm or more, or 20.0 mm or more, and may also be 40 mm or less, 35 mm or less, 32.5 mm or less, or 30.0 mm or less. If the mouthpiece segment is composed of two segments, for example as shown in Figures 2 and 3, the length in the direction of the major axis of each segment may be 5 mm or more, or 8 mm or more, and may also be 20 mm or less, 15 mm or less, or 13.0 mm or less. 【0048】The longitudinal lengths of the first filter segment 130a and the second filter segment 130b may be the same or different. For example, the longitudinal length of the first filter segment 130a may be shorter than the longitudinal length of the second filter segment 130b. In this case, it is possible to prevent the second filter segment 130b from falling out when it is positioned on the mouthpiece end side of the mouthpiece segment 130. On the other hand, the longitudinal length of the first filter segment 130a may be longer than the longitudinal length of the second filter segment 130b. In this case, the density of the adsorbent in the first filter segment 130a can be reduced, thereby preventing the adsorbent from falling out of the first filter segment 130a. Furthermore, although the mouthpiece segment 130 includes multiple segments, it is preferable that the total longitudinal length of these segments is within the range of the longitudinal length of the mouthpiece segment 130 described above. 【0049】 The airflow resistance in the longitudinal direction of the mouthpiece segment 130 is typically 0.18 mmH ２ O / mm~5.00mmH ２ It is 0 / mm. When the aerosol product of this embodiment is used as an electrically heated aerosol product or a non-combustible aerosol product, the airflow resistance in the longitudinal direction of the mouthpiece segment 130 is not particularly limited, but is usually 0.18 mmH ２ O / mm~2.00mmH ２ The ratio is 0 / mm. When the aerosol product of this embodiment is used as a cigarette, the airflow resistance in the longitudinal direction of the mouthpiece segment 130 is not particularly limited, but is usually 1.80 mmH ２ O / mm~5.00mmH ２ It is 0 / mm. Furthermore, the range of airflow resistance of each segment constituting the mouthpiece segment 130 can be appropriately adjusted so that it falls within the above range of airflow resistance. 【0050】The air permeability resistance of the mouthpiece segment 130 can be measured according to the ISO standard method (ISO 6565), similar to the measurement of the air permeability resistance of the aerosol product described above. For example, it can be measured using a filter air permeability resistance meter manufactured by Cerulean Chemical Industries. Air permeability resistance refers to the pressure difference between the first and second end faces when air is flowed from one end face (first end face) to the other end face (second end face) at a predetermined airflow rate (17.5 cc / sec) while air does not permeate the side surface of the aerosol product 100. The unit is generally mmH ２ Represented by O. It is known that the relationship between airflow resistance and aerosol product 100 is proportional in the length range that is normally implemented (length 5 mm to 200 mm), and if the length of the mouthpiece segment 130 is doubled, the airflow resistance will also double. 【0051】 <Mouthpiece Wrapper> The mouthpiece segment of this embodiment includes a wrapper around which the filter material is wound, and the wrapper may be an inner plug wrap 160. In this embodiment, where the filter segment is a multi-segment filter, the inner plug wrap 160 may individually wind two or more segments, or it may wind them together. On the other hand, when two or more segments are individually wound with the inner plug wrap 160, the multiple segments may be fixed by an outer plug wrap 161. The material, thickness, weight, etc. of the outer plug wrap 161 are not particularly limited, and the same paper as the inner plug wrap 160 can be used. In this specification, the inner plug wrap and the outer plug wrap are collectively referred to as the mouthpiece wrapper. The form of the inner plug wrap 160 is not particularly limited, and it may include a seam containing one or more rows of adhesive. The adhesive may include a hot melt adhesive. 【0052】The material of the mouthpiece wrapper is not particularly limited, and known materials can be used. The mouthpiece wrapper may also contain fillers such as calcium carbonate. The thickness of the mouthpiece wrapper is not particularly limited, but is usually 20 μm or more, preferably 30 μm or more, and usually 140 μm or less, preferably 130 μm or less, and more preferably 120 μm or less. The basis weight of the mouthpiece wrapper is not particularly limited, but is usually 20 gsm or more, preferably 22 gsm or more, more preferably 23 gsm or more, and usually 100 gsm or less, preferably 95 gsm or less, and more preferably 90 gsm or less. The mouthpiece wrapper may have a liquid-repellent function, for example, it may have a substrate and a liquid-repellent layer disposed on the surface of the substrate. When the mouthpiece wrapper has a substrate and a liquid-repellent layer disposed on the surface of the substrate, the mouthpiece wrapper may be formed by laminating a coating agent containing a material that forms the liquid-repellent layer onto the surface of the substrate by means of application, vapor deposition, or other means, as will be described later. The base material is not particularly limited and includes known papers used for mouthpiece wrappers, nonwoven fabrics made of polymer fibers, liquid-repellent paper, etc. 【0053】 In this embodiment, the inner plug wrap 160 around which the second filter material 150b is wound preferably has a liquid-repellent layer in at least the area in contact with the filter material. The inner plug wrap around which the second filter material 150b is wound has a density of 0.8 g / cm³. ３ Preferably, the concentration is greater than or equal to 0.9 g / cm³. ３ The above is preferable, and more preferably 1.0 g / cm³. ３ The above is the case, while the usual amount is 1.2 g / cm³. ３The following applies. Furthermore, the inner plug wrap around which the second filter material 150b is wound typically has a water-repellent capacity of 150 mL to 500 mL, preferably 200 mL to 400 mL, of the paper pulp used as the base material. The method for measuring and adjusting the water-repellent capacity is as described above. The liquid-repellent layer is a layer that repels liquids derived from the absorbent. In this way, by providing a liquid-repellent layer at a specific position on the mouthpiece wrapper, particularly the inner plug wrapper 160, or by making only the inner plug wrapper 160 around which the second filter material 150b is wound having a liquid-repellent layer, it is possible to suppress the diffusion of liquid leaked from the absorbent during storage along the surface of the wrapper, thereby suppressing the leakage of liquid from the edges of the mouthpiece wrapper. 【0054】 The material used to form the liquid-repellent layer may be appropriately selected from fluorine, polymers, polysaccharides, metals, inorganic oxides, etc., with polysaccharides being preferred. The material used to form the liquid-repellent layer may be used alone, or two or more may be used in any combination and ratio. 【0055】 When multiple segments are fixed with an outer plug wrap, the material, thickness, weight, etc. of the outer plug wrap are not particularly limited and can be the same as those for the roll paper described above. The liquid-repellent layer may be provided on at least a portion of the outer plug wrap. 【0056】<Filtering capacity for carbonyl compounds and phenols> The mouthpiece segment of this embodiment can sufficiently remove carbonyl compounds and phenols. Of these, the filtering capacity for carbonyl compounds can be evaluated by the filtering capacity for carbonyl compounds represented by the following formula (i). Filtering capacity for carbonyl compounds = DR1 / DR0 (i) DR1: The value of the amount of carbonyl compounds that pass through the aerosol when a smoking test is performed using the mouthpiece segment whose filtering capacity for carbonyl compounds is to be evaluated. DR0: The value of the amount of carbonyl compounds that pass through the aerosol when a smoking test is performed using the standard mouthpiece segment. The filtering capacity for phenols can be evaluated by the filtering capacity for phenols represented by the following formula (ii). Filtering capacity for phenols = DR3 / DR2 (ii) DR3: The value obtained by dividing the amount of phenol compounds that pass through the aerosol when a smoking test is performed using the mouthpiece segment whose filtering capacity for phenols is to be evaluated by the amount of particulate matter in the aerosol that passes through the filter. DR2: The value obtained by dividing the amount of phenols permeating the aerosol that passes through the standard filter by the amount of particulate matter in the aerosol that passes through the standard mouthpiece segment when a smoking test is conducted using the standard mouthpiece segment. Note that when calculating the filtration capacity for both carbonyls and phenols, the calculation is based on the amount of permeation of a single compound belonging to each category. 【0057】In this embodiment, the smaller the value of the carbonyl and phenol filtration capacity of the mouthpiece segment, the more carbonyl and phenol compounds can be reduced when used with aerosol products. The carbonyl filtration capacity is preferably 0.75 or less, more preferably 0.65 or less, and even more preferably 0.59 or less. The phenol filtration capacity is preferably 0.80 or less, more preferably 0.65 or less, and even more preferably 0.57 or less. From the viewpoint of achieving both carbonyl and phenol filtration, it is preferable that the carbonyl filtration capacity is 0.75 or less and the phenol filtration capacity is 0.80 or less. 【0058】 The permeation amounts of carbonyl compounds, phenols, and aerosol particulate matter used in formulas (i) and (ii) are calculated as follows: (1) A sample of aerosol products is prepared by connecting the mouthpiece segment (evaluation target mouthpiece segment) and the aerosol generation segment with tip paper. (2) After conditioning under harmonized conditions according to ISO 3402:2023, the aerosol product sample is automatically smoked using an automatic smoking machine according to ISO 3308:2012, and the mainstream smoke is collected. The collected mainstream smoke is analyzed, and the amount of each component per sample is calculated. Specifically, carbonyl compounds are tested according to ISO 21160:2018, phenols according to ISO 23905:2020, and aerosol particulate matter according to ISO 4387:2019. 【0059】 <Intermediate Segment> The aerosol product 100 may have an intermediate segment 120. The configuration of the intermediate segment 120 is not particularly limited as long as it has the function of cooling the vapor produced by heating the aerosol generating segment. For example, it can be made by processing cardboard into a cylindrical shape. In this case, the inside of the cylinder is hollow, and the vapor containing the aerosol base material and tobacco flavor components comes into contact with the air inside the cavity and is cooled. If the aerosol product 100 is a cigarette as shown in Figure 3, the intermediate segment does not need to be present. 【0060】One embodiment of the intermediate segment 120 is a paper tube made by processing a single sheet of paper or multiple sheets of paper glued together into a cylindrical shape. Furthermore, it is preferable that there are openings around the paper tube or the like for introducing outside air in order to increase the cooling effect by bringing outside air at room temperature into contact with high-temperature steam. In Figure 2, it is preferable that the openings 103 for taking in outside air are provided on the upstream side in the longitudinal direction of the first filter segment 130a, specifically in the intermediate segment 120. By having openings in the segment upstream in the longitudinal direction of the first filter segment 130a, the airflow within the first filter segment 130a is slowed down (the flow velocity is reduced), thereby increasing the adsorption performance of carbonyls within the first filter segment. The number of openings 103 in the intermediate segment 120 is not particularly limited. On the other hand, as shown in Figure 3, when the aerosol product 100 is a cigarette, it is preferable that the opening 103 is provided in the second filter segment 130b, for example, in the segment downstream in the longitudinal direction of the first filter segment 130a that constitutes the mouthpiece segment 130. 【0061】 <Tip Paper> The material of the tip paper 140 connecting two or more selected from the aerosol generating segment 110, the intermediate segment 120, and the mouthpiece segment 130 is not particularly limited, and known materials can be used. The tip paper 140 may also contain fillers such as calcium carbonate. Furthermore, at least a portion of the tip paper 140 may be provided with a liquid-repellent layer or a liquid-resistant layer similar to the liquid-repellent layer that the mouthpiece wrapper may have. 【0062】<Non-combustion type aerosol generation system> The aerosol product 100 described above can be used together with a non-combustion type aerosol generation device that heats the aerosol product 100. That is, a non-combustion type aerosol generation system (also simply called the "non-combustion type aerosol generation system"), which is another embodiment of the present invention, is a non-combustion type aerosol generation system comprising the aerosol product described above and a non-combustion type aerosol generation device that heats the aerosol product. The configuration of the non-combustion type aerosol generation system is not particularly limited and can be configured as shown in Figure 5, for example. Figure 5 is a diagram illustrating the internal structure of the non-combustion type aerosol generation system 200. The aerosol product 100 in Figure 5 is a schematic representation of the aerosol product 100 in Figure 1. 【0063】 The non-combustible aerosol generation system 200 comprises an aerosol product 100 and a non-combustible aerosol generation device 30 that heats the aerosol generation segment 110 of the aerosol product 100. The aerosol product 100 is housed in a housing section 310 that can be inserted into and removed from the housing section 310 through an insertion port 3A of the non-combustible aerosol generation device 30. 【0064】In the non-combustion type aerosol generating device 30, when used by a user, the aerosol product 100 is inserted into the housing section 310. In this state, a heater provided in the housing section 310 is heated, and the flavor source within the aerosol product 100 is heated, thereby generating an aerosol containing components such as tobacco for the user to inhale. Alternatively, the heater may directly heat the aerosol generating segment 110, or it may heat the aerosol source within the aerosol product 100, supplying the heated aerosol to the aerosol generating segment 110, and the heated aerosol further heats the tobacco components within the aerosol generating segment 110 for the user to inhale. The heater may also heat the aerosol generating segment 110 from the outside or from the inside. If a susceptor heated by induction heating is provided within the aerosol generating segment 110, the non-combustion type aerosol generating device 30 may be provided with an induction coil instead of a heater. 【0065】 The non-combustion type aerosol generating device 30 has an outer wall 301 and a housing 31 which is a casing for housing various components. Inside the housing 31 are a heater 32, a temperature sensor 35, a suction sensor 36, a control unit 37, a power supply 38, and the like. 【0066】 The present invention will be described in more detail by examples, but the present invention is not limited to the following examples unless it exceeds the gist of the invention. 【0067】As shown in Table 1 below, mouthpiece segments equipped with a first filter segment and a second filter segment (Examples 1-6, Comparative Example 5) and other mouthpiece segments (Comparative Examples 1-4) were prepared, and test specimens were made by connecting them to commercially available aerosol-generating segments. The airflow resistance of each mouthpiece segment was measured according to the ISO standard method (ISO 6565:2015) described above. Information on the filter material used to prepare each segment is summarized in Table 2. These test specimens were subjected to smoking tests using the automatic smoking machine described above, and the carbonyl compounds (crotonaldehyde), phenols (p-cresol), and aerosol particulate matter were quantified. The test specimen of Comparative Example 1 was adopted as the reference mouthpiece segment. The filtration capacity for carbonyl compounds (crotonaldehyde) and phenols (p-cresol) was calculated according to equations (i) and (ii) described above. The results are shown in Table 1. TEC: Triethyl citrate, MCT: Medium-chain triglyceride, SFAE: Sucrose fatty acid ester, PVAc: Polyvinyl acetate, EVA: Ethylene-vinyl acetate copolymer 【0068】Table 1 shows that the test samples (Examples 1-6) that connected a first filter segment with carbonyl adsorption function and a second filter segment with phenol absorption function were able to effectively reduce carbonyls (crotonaldehyde) and phenols (p-cresol) compared to the untreated test sample (Comparative Example 1). Furthermore, the test sample with only the first filter segment with carbonyl adsorption function (Comparative Example 5) and the test samples with only the second filter segment with phenol absorption function (Comparative Examples 2, 3, and 4) only reduced phenols (p-cresol). In addition, the test sample in which a liquid absorbent with phenol absorption function was added to the first filter segment with carbonyl adsorption function showed relatively low carbonyl adsorption function (Example 6). From the above, it became clear that in order to effectively reduce carbonyls and phenols, it is important to assign each reduction function to a separate segment and combine those segments. 【0069】 100 Aerosol product 101 Mouthpiece end 102 Tip 103 Opening 110 Aerosol generating segment 111 Tobacco filler 112 Rolling paper 120 Intermediate segment 130 Mouthpiece segment 140 Tip paper 150 Filter material 160 Mouthpiece wrapper 200 Non-combustible aerosol generating system 30 Electric heating device 31 Housing 310 Enclosure 32 Heater 35 Temperature sensor 36 Suction sensor 37 Control unit 38 Power supply

Claims

1. A mouthpiece segment for aerosol products, wherein the mouthpiece segment comprises at least a first filter segment and a second filter segment, the first filter segment comprising a first filter material containing cellulose fibers and a granular adsorbent for adsorbing carbonyls, the second filter segment comprising a second filter material containing cellulose fibers and an absorbent for absorbing phenols, and the first filter segment is positioned upstream of the second filter segment in the longitudinal direction.

2. The mouthpiece segment according to claim 1, wherein both the first filter material and the second filter material are sheet materials containing short cellulose fibers.

3. The mouthpiece segment according to claim 1, wherein the first filter material is a sheet material made of paper, and the second filter material is a sheet material made of nonwoven fabric.

4. The mouthpiece segment according to claim 1, wherein both the first filter material and the second filter material are sheet materials made of paper.

5. The mouthpiece segment according to claim 1, wherein the first filter material is a sheet material made of nonwoven fabric, and the second filter material is a sheet material made of paper.

6. The mouthpiece segment according to claim 1, wherein both the first filter material and the second filter material are sheet materials made of nonwoven fabric.

7. The mouthpiece segment according to claim 1, wherein at least one of the first filter material or the second filter material is a tow of cellulose fibers.

8. The mouthpiece segment according to any one of claims 1 to 7, wherein the absorbent is a polymer compound.

9. The mouthpiece segment according to any one of claims 1 to 8, wherein the absorbent does not contain a synthetic polymer and is liquid, solid, or gel-like at 25°C.

10. The mouthpiece segment according to any one of claims 1 to 9, wherein the adsorbent is disposed on the first filter material.

11. The mouthpiece segment according to any one of claims 1 to 9, wherein the adsorbent is disposed inside the first filter medium.

12. The mouthpiece segment according to claim 1, wherein the second filter material is a dry nonwoven fabric containing a binder, and the absorbent is the binder.

13. The mouthpiece segment according to any one of claims 1 to 12, wherein the first filter segment does not contain the absorbent.

14. The mouthpiece segment according to claim 1 or 2, wherein the first filter segment further comprises an absorbent that absorbs phenols, the absorbent being a polymer compound or a solid.

15. The mouthpiece segment according to claim 14, wherein the first filter material containing cellulose fibers is a sheet material made of a nonwoven fabric, and the nonwoven fabric contains a binder.

16. The mouthpiece segment according to claim 15, wherein the binder contained in the nonwoven fabric is a polymer compound.

17. The mouthpiece segment according to claim 16, wherein the polymer compound is ethylene-vinyl acetate copolymer, polyvinyl acetate, vinyl acetate acrylic copolymer, or a mixture thereof.

18. An aerosol product having an aerosol generating segment and a mouthpiece segment according to any one of claims 1 to 17.

19. An aerosol product comprising an aerosol generating segment, a mouthpiece segment according to any one of claims 1 to 17, and an intermediate segment between the aerosol generating segment and the mouthpiece segment.

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