KR20230114548A - Aerosol generating article and device for generating aerosol receiving the same - Google Patents

Abstract

An aerosol generating article is disclosed. An aerosol-generating article of the present disclosure includes an aerosol-generating rod from which mainstream smoke is generated and a filter rod positioned downstream of the aerosol-generating rod and made up of a plurality of layers, the filter rod being formed of paper and a first layer comprising a porous filler in paper. and a second layer positioned outside the first layer, and the second layer has a thickness of 60 um or more and 200 um or less.

Description

Aerosol generating article and aerosol generating device accommodating the same

The present disclosure relates to aerosol generating articles and aerosol generating devices.

Aerosol generating devices are for extracting certain components from a medium or substance through an aerosol. The medium may contain materials of various components. Substances included in the medium may be flavor substances of various components. For example, the substance included in the medium may include a nicotine component, an herbal component, and/or a coffee component. Recently, many studies on these aerosol generating devices have been conducted.

Cigarettes used with aerosol generating devices can be heated to temperatures above 200 degrees to generate mainstream smoke. In this case, mainstream smoke generated from cigarettes may give consumers a risk of burns depending on the surrounding environment during smoking. Therefore, it is important to cool the temperature of mainstream smoke generated from cigarettes to a temperature suitable for inhalation.

The present disclosure aims to solve the foregoing and other problems.

Another object may be to effectively lower the temperature of the mainstream smoke through physical adsorption by the porous filler.

Another object may be to adjust the thickness of an intermediate layer constituting the filter rod to improve filter quality and prevent filter production efficiency from deteriorating.

Another object may be to effectively lower the temperature of the mainstream smoke by introducing outside air through the perforations.

Another object may be to lower the temperature of mainstream smoke to reduce unpleasant sensations that a user may feel when smoking.

Another purpose may be to lower the temperature of the mainstream smoke, thereby reducing the risk of burns to the user.

An aerosol product according to one aspect of the present disclosure for achieving the above object includes an aerosol generating rod in which mainstream smoke is generated and a filter rod positioned downstream of the aerosol generating rod and made of a plurality of layers, the filter rod being made of paper. It includes a first layer including a porous filler and a second layer formed of paper and positioned outside the first layer, wherein the second layer has a thickness of 60 um or more and 200 um or less.

According to at least one of the embodiments of the present disclosure, the temperature of mainstream smoke can be effectively lowered through a physical adsorption method.

According to at least one of the embodiments of the present disclosure, by adjusting the thickness of the intermediate layer constituting the filter rod, filter quality may be improved and filter production efficiency may be prevented from being lowered.

According to at least one of the embodiments of the present disclosure, the temperature of the mainstream smoke can be effectively lowered through the inflow of outside air through the perforation.

According to at least one of the embodiments of the present disclosure, by lowering the temperature of mainstream smoke, it is possible to reduce discomfort that a user may feel when smoking.

According to at least one of the embodiments of the present disclosure, the risk of burns to the user may be reduced by lowering the temperature of mainstream smoke.

Additional scope of applicability of the present disclosure will become apparent from the detailed description that follows. However, since various changes and modifications within the spirit and scope of the present disclosure may be clearly understood by those skilled in the art, it should be understood that the detailed description and specific embodiments such as the preferred embodiments of the present disclosure are given by way of example only.

1 and 2 are diagrams illustrating examples of aerosol products according to embodiments of the present disclosure.
3 is a diagram showing the shape of a filter rod according to an embodiment of the present disclosure.
4-6 are diagrams illustrating examples of an aerosol generating device containing an aerosol product according to embodiments of the present disclosure.

Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings, but the same or similar components are given the same reference numerals regardless of reference numerals, and redundant description thereof will be omitted.

The suffixes "module" and "unit" for components used in the following description are given or used together in consideration of ease of writing the specification, and do not have meanings or roles that are distinct from each other by themselves.

In addition, in describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiment disclosed in this specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, the technical idea disclosed in this specification is not limited by the accompanying drawings, and all changes included in the spirit and technical scope of the present disclosure , it should be understood to include equivalents or substitutes.

Terms including ordinal numbers, such as first and second, may be used to describe various components, but the components are not limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

1 and 2 are diagrams illustrating examples of aerosol products according to embodiments of the present disclosure.

Referring to FIG. 1 , the aerosol generating article 2 includes a tobacco rod 21 and a filter rod 22 . A first portion 21 described later with reference to FIGS. 1 to 3 includes a tobacco rod 21 , and a second portion 22 includes a filter rod 22 .

Although filter rod 22 is shown as a single segment in FIG. 1, it is not limited thereto. In other words, the filter rod 22 may be composed of a plurality of segments. For example, filter rod 22 may include a segment that cools the aerosol and a segment that filters certain components contained within the aerosol. Also, if necessary, the filter rod 22 may further include at least one segment performing other functions.

The diameter of the aerosol-generating article 2 is in the range of 5 mm to 9 mm, and the length may be, but is not limited to, about 48 mm. For example, the length of the tobacco rod 21 is about 12 mm, the length of the first segment of the filter rod 22 is about 10 mm, the length of the second segment of the filter rod 22 is about 14 mm, the length of the filter rod 22 The length of the third segment of may be about 12 mm, but is not limited thereto.

The aerosol-generating article 2 may be wrapped by at least one wrapper 24 . At least one hole through which external air is introduced or internal gas is discharged may be formed in the wrapper 24 . As an example, the aerosol-generating article 2 may be wrapped by a single wrapper 24 . As another example, the aerosol-generating article 2 may be overlappingly wrapped by two or more wrappers 24 . For example, the tobacco rod 21 may be wrapped by the first wrapper 241 and the filter rod 22 may be wrapped by the wrappers 242 , 243 , and 244 . And, the entire aerosol-generating article 2 can be re-wrapped by a single wrapper 245 . If the filter rod 22 is composed of a plurality of segments, each segment may be wrapped by wrappers 242 , 243 , and 244 .

The first wrapper 241 and the second wrapper 242 may be made of general filter paper. For example, the first wrapper 241 and the second wrapper 242 may be porous wrappers or non-porous wrappers. In addition, the first wrapper 241 and the second wrapper 242 may be made of oil-resistant paper and/or aluminum laminate packaging material.

The third wrapper 243 may be made of hard paper. For example, the basis weight of the third wrapper 243 may be in the range of 88 g/m ² to 96 g/m ² , preferably in the range of 90 g/m ² to 94 g/m ² . In addition, the thickness of the third wrapper 243 may be included in the range of 120um to 130um, preferably 125um.

The fourth wrapper 244 may be made of oil-resistant hard paper. For example, the basis weight of the fourth wrapper 244 may be in the range of 88 g/m ² to 96 g/m ² , preferably in the range of 90 g/m ² to 94 g/m ² . In addition, the thickness of the fourth wrapper 244 may be included in the range of 120um to 130um, preferably 125um.

The fifth wrapper 245 may be made of sterile paper (MFW). Here, the sterile paper (MFW) refers to paper specially manufactured to improve tensile strength, water resistance, smoothness, etc. compared to general paper. For example, the basis weight of the fifth wrapper 245 may be in the range of 57 g/m ² to 63 g/m ² , and preferably may be 60 g/m ² . In addition, the thickness of the fifth wrapper 245 may be included in the range of 64um to 70um, preferably 67um.

A predetermined material may be internally added to the fifth wrapper 245 . Here, an example of the predetermined material may be silicon, but is not limited thereto. For example, silicon has properties such as heat resistance with little change with temperature, oxidation resistance that does not oxidize, resistance to various chemicals, water repellency, or electrical insulation. However, even if it is not silicon, any material having the above-described characteristics may be applied (or coated) to the fifth wrapper 245 without limitation.

The fifth wrapper 245 can prevent the aerosol-generating article 2 from burning. For example, if the tobacco rod 210 is heated by the heater 13, there is a possibility that the aerosol-generating article 2 will burn. Specifically, when the temperature rises above the ignition point of any one of the materials included in the tobacco rod 310, the aerosol-generating article 2 may be combusted. Even in this case, since the fifth wrapper 245 includes an incombustible material, burning of the aerosol-generating article 2 can be prevented.

In addition, the fifth wrapper 245 can prevent the holder 1 from being contaminated by substances produced by the aerosol-generating article 2 . Liquid substances may be created within the aerosol-generating article 2 by a user's puff. For example, an aerosol generated in the aerosol-generating article 2 may be cooled by outside air, thereby generating liquid substances (eg, moisture, etc.). As the fifth wrapper 245 wraps the aerosol-generating article 2, liquid substances created within the aerosol-generating article 2 can be prevented from leaking out of the aerosol-generating article 2.

The tobacco rod 21 contains an aerosol generating material. For example, the aerosol generating material may include, but is not limited to, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol and oleyl alcohol. In addition, the tobacco rod 21 may contain other additive substances such as flavoring agents, humectants and/or organic acids. In addition, a flavoring liquid such as menthol or a moisturizer can be added to the tobacco rod 21 by spraying it to the tobacco rod 21 .

Tobacco rod 21 can be manufactured in various ways. For example, the tobacco rod 21 may be made of a sheet or may be made of a strand. In addition, the tobacco rod 21 may be made of a cut filler in which a tobacco sheet is chopped. Also, the tobacco rod 21 may be surrounded by a heat conducting material. For example, the thermal conduction material may be a metal foil such as aluminum foil, but is not limited thereto. For example, the heat conduction material surrounding the tobacco rod 21 can improve the thermal conductivity applied to the tobacco rod by evenly distributing the heat transmitted to the tobacco rod 21, thereby improving the taste of the tobacco. . In addition, the heat conduction material surrounding the tobacco rod 21 may function as a susceptor heated by an induction heating type heater. At this time, although not shown in the drawing, the tobacco rod 21 may further include an additional susceptor in addition to the heat conducting material surrounding the outside.

Filter rod 22 may be a cellulose acetate filter. On the other hand, the shape of the filter rod 22 is not limited. For example, the filter rod 22 may be a cylindrical rod or a tubular rod having a hollow inside. Also, the filter rod 22 may be a recess type rod. If the filter rod 22 is composed of a plurality of segments, at least one of the plurality of segments may be manufactured in a different shape.

The first segment of filter rod 22 may be a cellulose acetate filter. For example, the first segment may be a tube-shaped structure including a hollow therein. When the heater 13 is inserted by the first segment, the internal material of the tobacco rod 210 may be prevented from being pushed back, and the cooling effect of the aerosol may also be generated. The diameter of the hollow included in the first segment may be appropriately employed within a range of 2 mm to 4.5 mm, but is not limited thereto.

The length of the first segment may be appropriately employed within a range of 4 mm to 30 mm, but is not limited thereto. Preferably, the length of the first segment may be 10 mm, but is not limited thereto.

The hardness of the first segment may be adjusted by adjusting the content of the plasticizer during manufacture of the first segment. In addition, the first segment may be manufactured by inserting a structure such as a film or a tube made of the same or different material into the inside (eg, hollow).

The second segment of the filter rod 22 cools the aerosol produced by the heater 13 heating the tobacco rod 21 . Thus, the user can inhale the aerosol cooled to an appropriate temperature.

The length or diameter of the second segment may vary depending on the shape of the aerosol-generating article 2 . For example, the length of the second segment may be appropriately employed within a range of 7 mm to 20 mm. Preferably, the length of the second segment may be about 14 mm, but is not limited thereto.

The second segment may be fabricated by weaving polymer fibers. In this case, flavoring liquid may be applied to fibers made of polymer. Alternatively, the second segment may be manufactured by weaving a separate fiber coated with flavoring liquid and a fiber made of a polymer together. Alternatively, the second segment may be formed by a crimped polymer sheet.

For example, the polymer is selected from the group consisting of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polylactic acid (PLA), cellulose acetate (CA) and aluminum foil. material can be made.

As the second segment is formed by woven polymer fibers or crimped polymer sheets, the second segment may include one or more longitudinally extending channels. Here, the channel means a passage through which gas (eg, air or aerosol) passes.

For example, the second segment of a crimped polymer sheet may be formed from a material having a thickness between about 5 μm and about 300 μm, such as between about 10 μm and about 250 μm. Also, the total surface area of the second segment may be between about 300 mm ² /mm and about 1000 mm ² /mm. Further, the aerosol-cooling element may be formed from a material having a specific surface area between about 10 mm ² /mg and about 100 mm ² /mg.

Meanwhile, the second segment may include a thread containing a volatile flavor component. Here, the volatile flavor component may be menthol, but is not limited thereto. For example, the thread may be loaded with sufficient menthol to provide at least 1.5 mg of menthol to the second segment.

The third segment of filter rod 22 may be a cellulose acetate filter. The length of the third segment may be appropriately employed within a range of 4 mm to 20 mm. For example, the length of the third segment may be about 12 mm, but is not limited thereto.

In the process of making the third segment, flavor may be generated by spraying flavoring liquid on the third segment. Alternatively, a separate fiber coated with flavoring liquid may be inserted into the third segment. The aerosol generated in the tobacco rod 21 is cooled as it passes through the second segment of the filter rod 22, and the cooled aerosol is delivered to the user through the third segment. Therefore, when the flavoring element is added to the third segment, the effect of enhancing the persistence of the flavor delivered to the user may occur.

In addition, at least one capsule 23 may be included in the filter rod 22 . Here, the capsule 23 may perform a function of generating a flavor or a function of generating an aerosol. For example, the capsule 23 may have a structure in which a liquid containing a fragrance is wrapped with a film. The capsule 23 may have a spherical or cylindrical shape, but is not limited thereto.

Referring to FIG. 2 , the aerosol-generating article 3 may further comprise a shear plug 33 . The shear plug 33 may be located on one side opposite to the filter rod 32 in the tobacco rod 31 . The shear plug 33 can prevent the tobacco rod 31 from escaping to the outside, and prevents the aerosol liquefied from the tobacco rod 31 from flowing into the aerosol generating device (1 in FIGS. 4 to 6) during smoking. It can be prevented.

The filter rod 32 may include a first segment 321 and a second segment 322 . Here, the first segment 321 may correspond to the first segment of the filter rod 22 of FIG. 1, and the second segment 322 may correspond to the third segment of the filter rod 22 of FIG. can

The diameter and overall length of the aerosol-generating article 3 may correspond to the diameter and overall length of the aerosol-generating article 2 of FIG. 1 . For example, the length of the shear plug 33 is about 7 mm, the length of the tobacco rod 31 is about 15 mm, the length of the first segment 321 is about 12 mm, and the length of the second segment 322 is about 14 mm. may, but is not limited thereto.

The aerosol-generating article 3 may be wrapped by at least one wrapper 35 . At least one hole through which external air is introduced or internal gas is discharged may be formed in the wrapper 35 . For example, the shear plug 33 is wrapped by the first wrapper 351, the tobacco rod 31 is wrapped by the second wrapper 352, and the first segment by the third wrapper 353 ( 321) may be wrapped, and the second segment 322 may be wrapped by the fourth wrapper 354. Then, the entire aerosol-generating article 3 may be re-wrapped by the fifth wrapper 355 .

In addition, at least one perforation 36 may be formed in the fifth wrapper 355 . For example, the perforation 36 may be formed in an area surrounding the tobacco rod 31, but is not limited thereto. Perforations 36 may serve to transfer heat generated by the heater 13 shown in FIGS. 5 and 6 to the inside of the tobacco rod 31.

In addition, at least one capsule 34 may be included in the second segment 322 . Here, the capsule 34 may perform a function of generating a flavor or a function of generating an aerosol. For example, the capsule 34 may have a structure in which a liquid containing a fragrance is wrapped with a film. The capsule 34 may have a spherical or cylindrical shape, but is not limited thereto.

The first wrapper 351 may be a metal foil such as aluminum foil coupled to a general filter wrapper. For example, the total thickness of the first wrapper 351 may be included in the range of 45 um to 55 um, and may be preferably 50.3 um. In addition, the thickness of the metal foil of the first wrapper 351 may be included in the range of 6um to 7um, preferably 6.3um. In addition, the basis weight of the first wrapper 351 may be within a range of 50 g/m ² to 55 g/m ² , and preferably may be 53 g/m ² .

The second wrapper 352 and the third wrapper 353 may be made of general filter wrappers. For example, the second wrapper 352 and the third wrapper 353 may be porous wrappers or non-porous wrappers.

For example, the porosity of the second wrapper 352 may be 35000 CU, but is not limited thereto. In addition, the thickness of the second wrapper 352 may be included in the range of 70um ~ 80um, preferably may be 78um. In addition, the basis weight of the second wrapper 352 may be in the range of 20 g/m ² to 25 g/m ² , preferably 23.5 g/m ² .

For example, the porosity of the third wrapper 353 may be 24000 CU, but is not limited thereto. In addition, the thickness of the third wrapper 353 may be included in the range of 60um to 70um, preferably 68um. In addition, the basis weight of the third wrapper 353 may be within a range of 20 g/m ² to 25 g/m ² , and preferably may be 21 g/m ² .

The fourth wrapper 354 may be made of PLA laminate. Here, the PLA laminate means a paper layer, a PLA layer, and three layers of paper including a paper layer. For example, the thickness of the fourth wrapper 354 may be within a range of 100um to 120um, preferably 110um. In addition, the basis weight of the fourth wrapper 354 may be in the range of 80 g/m ² to 100 g/m ² , preferably 88 g/m ² .

The fifth wrapper 355 may be made of sterile paper (MFW). Here, the sterile paper (MFW) refers to paper specially manufactured to improve tensile strength, water resistance, smoothness, etc. compared to general paper. For example, the basis weight of the fifth wrapper 355 may be within a range of 57 g/m ² to 63 g/m ² , and preferably may be 60 g/m ² . In addition, the thickness of the fifth wrapper 355 may be within a range of 64um to 70um, preferably 67um.

A predetermined material may be internally added to the fifth wrapper 355 . Here, an example of the predetermined material may be silicon, but is not limited thereto. For example, silicon has properties such as heat resistance with little change with temperature, oxidation resistance that does not oxidize, resistance to various chemicals, water repellency, or electrical insulation. However, even if it is not silicon, any material having the above characteristics may be applied (or coated) to the fifth wrapper 355 without limitation.

The shear plug 33 may be made of cellulose acetate. As an example, the shear plug 33 may be fabricated by adding a plasticizer (eg, triacetin) to cellulose acetate tow. The mono denier of the filament constituting the cellulose acetate tow may be included in the range of 1.0 to 10.0, preferably included in the range of 4.0 to 6.0. More preferably, the mono denier of the filament of the shear plug 33 may be 5.0. In addition, the cross section of the filaments constituting the front end plug 33 may be Y-shaped. The total denier of the shear plug 33 may be included in the range of 20000 to 30000, preferably included in the range of 25000 to 30000. More preferably, the total denier of the shear plug 33 may be 28000.

Also, if necessary, the front end plug 33 may include at least one channel, and the cross-sectional shape of the channel may be manufactured in various ways.

The tobacco rod 31 may correspond to the tobacco rod 21 described above with reference to FIG. 1 . Therefore, a detailed description of the tobacco rod 31 will be omitted below.

The first segment 321 may be made of cellulose acetate. For example, the first segment may be a tube-shaped structure including a hollow therein. The first segment 321 may be manufactured by adding a plasticizer (eg, triacetin) to cellulose acetate tow. For example, the mono denier and total denier of the first segment 321 may be the same as the mono denier and total denier of the shear plug 33 .

The second segment 322 may be made of cellulose acetate. The mono denier of the filaments constituting the second segment 322 may be included in the range of 1.0 to 10.0, preferably included in the range of 8.0 to 10.0. More preferably, the mono denier of the filament of the second segment 322 may be 9.0. In addition, the cross section of the filament of the second segment 322 may be Y-shaped. The total denier of the second segment 322 may be included in the range of 20000 to 30000, preferably 25000.

3 is a diagram showing the shape of a filter rod according to an embodiment of the present disclosure.

Hereinafter, for convenience, description will be made based on the aerosol generating article 2 shown in FIG. 1 , but the same characteristics can be applied to the aerosol generating article 3 shown in FIG. 2 .

Throughout this specification, “upstream” and “downstream” may be determined relative to the direction of airflow such that when a user inhales with an aerosol-generating article, the generated aerosol is drawn into the user's mouth or lungs. For example, in FIGS. 1 and 2, tobacco rods 21 and 31 are upstream of filter rods 22 and 32 as aerosols generated in tobacco rods 21 and 31 are directed to filter rods 22 and 32. , and the filter rods 22 and 32 are positioned downstream of the tobacco rods 21 and 31. “Upstream” and “downstream” may be determined relative to components.

Referring to FIG. 3 , the filter rod 22 of the aerosol-generating article 2 includes a cooled filter rod 220 . The cooling filter rod 220 is a filter containing paper as a main component. The cooling filter rod 220 may be formed of a plurality of layers including paper and may be a tubular structure including a hollow inside a cylinder. The cooling filter rod 220 may be a branch pipe filter.

The plurality of layers of the cooling filter rod 220 may include a first layer 2221 and a second layer 2222 positioned outside the first layer 2221 . The first layer 2221 and the second layer 2222 may be formed of porous paper.

A hollow flow path 221 is formed by the inner circumferential surface of the first layer 2221, and aerosol (main stream smoke) generated by heating the aerosol generating article 2 can flow through the hollow flow path 221.

The first layer 2221 may have a thickness of 50 um to 100 um. Preferably, the first layer 2221 may have a thickness of 50 um to 70 um. More preferably, the first layer 2221 may have a thickness of 60um. However, the thickness of the first layer 2221 is not limited thereto.

The second layer 2222 may be located outside the first layer 2221 and laminated with the first layer 2221 to protect the first layer 2221 . The second layer 2222 is formed to have an appropriate thickness, so that the cooling filter rod 220 has a circular tube shape, and the tube has a certain level of strength or higher.

The second layer 2222 may have a thickness of 60 um to 200 um. Preferably, the second layer 2222 may have a thickness of 160 um to 200 um. More preferably, the second layer 2222 may have a thickness of 180 um to 190 um. However, the thickness of the second layer 2222 is not limited thereto.

The thickness of the second layer 2222 may be greater than or equal to the thickness of the first layer 2221 . When the porous filler is included in the first layer 2221, the thicker the first layer 2221 is, the more difficult it is to effectively fill the porous filler in the paper constituting the first layer 2221. The smaller the thickness of the second layer 2222, the more difficult it is to form the cooling filter rod 220 into a circular shape, and the more difficult it is to form the tube to have a minimum strength required to maintain the shape of the tube during use of the aerosol generating article. Therefore, by forming the second layer 2222 such that the thickness of the second layer 2222 is equal to or greater than the thickness of the first layer 2221, the cooling filter rod may have a certain level of strength or higher to maintain a circular shape. And, the porous filler can be effectively filled in the first layer. The thickness range of the second layer 2222 will be described later in detail with reference to Table 1 below.

The cooling filter rod 220 may further include a third layer 2223 positioned outside the second layer 2222 . The first to third layers may be laminated together to form a hollow paper pipe. The third layer 2223 may be an outermost layer of the cooling filter rod 220 . The third layer 2223 may protect the first layer 2221 and the second layer 2222 . Like the first layer and the second layer, the third layer 2223 may include paper as a main component.

The cooling filter rod 220 may include a plurality of perforations 223 . The plurality of perforations 223 may be spaced apart from each other in the circumferential direction of the cooling filter rod 220 . The plurality of perforations 223 may be formed to pass through all layers included in the cooling filter rod 220 . The plurality of perforations 223 may be formed to penetrate all layers of the wrapper covering the outer circumferential surface of the cooling filter rod 220 and the cooling filter rod 220 .

The exterior and interior of the cooling filter rod 220 may be in fluid communication by means of the plurality of perforations 223 . External air introduced from the outside of the cooling filter rod 220 to the inside through the plurality of perforations 223 may come into contact with mainstream smoke. The mainstream smoke generated in the tobacco rod 21 can be effectively cooled by outside air introduced through the plurality of perforations 223 .

The cooling filter rod 220 may include a porous filler 2221a therein. The porous filler 2221a may be included in at least one of the plurality of layers of the cooling filter rod 220 . For example, referring to (c) of FIG. 3 , the porous filler 2221a may be included in the first layer 2221 located at the innermost side of the cooling filter rod 220 . For example, the porous filler 2221a may be included in the first layer 2221 located at the innermost side of the cooling filter rod 220 and the second layer 2222 located outside the first layer 2221. . However, the layer including the porous filler 2221a is not limited thereto.

The aerosol generated by heating the aerosol-generating article 2 may be cooled while flowing through the hollow 221 inside the cooling filter rod 220 . The aerosol may be cooled in the process of flowing through the hollow flow channel formed of the inner circumferential surface of the first layer 2221 of the cooling filter rod 220.

The porous filler 2221a may be filled in paper when manufacturing each layer of the hollow tube 222 . For example, the porous filler 2221a may be added in the process of manufacturing paper forming the first layer 2221 .

The porous filler 2221a filled in the first layer 2221 of the hollow tube 222 may adsorb moisture contained in the mainstream smoke. The porous filler 2221a may adsorb all or some of the moisture and moisture phase components contained in the mainstream smoke. Through physical adsorption by the porous filler 2221a, the temperature of the mainstream smoke can be effectively reduced.

The porous filler 2221a may include activated carbon. For example, the activated carbon may include at least one of plant-based activated carbon that has been revitalized, pulverized, and classified using coconut shells (coconut shells), walnut shells, palm, wood, wood board, bamboo, or coal as raw materials. For example, the activated carbon may include at least one of a synthetic resin or a polymer-based activated carbon made of a polymer such as rayon, polyvinylidene chloride, acrylic resin, or cellulose as a raw material. For example, the activated carbon may include at least one of mineral-based activated carbon using mineral-based raw materials such as lignite, lechic coal, anthracite, coke, coal, or petroleum pitch. The form of activated carbon may include at least one of a bead form, a granule form, and a fiber form. Meanwhile, the porous filler 2221a may include at least one of zeolite, porous aluminum oxide, and silica gel.

Activated carbon is a material with high adsorption performance. It is known that the higher the BET (Brunauer Emmett Teller) specific surface area of the activated carbon, the higher the adsorption performance of the activated carbon. The specific surface area represents the sum of the surface areas of materials per unit mass, and the higher the specific surface area, the higher the adsorption performance.

Activated carbon included in the cooling filter rod 220 according to an embodiment of the present disclosure may have a BET specific surface area of 500 to 2500 m ² /g. Preferably, the BET specific surface area of the activated carbon may be 1000 to 2000 m ² /g, but is not limited thereto.

Table 1 shows the roundness according to the thickness of the second layer 2222 included in the cooling filter rod 220 according to an embodiment of the present disclosure.

division Third layer (um) Second layer (um) 1st layer (um) Roundness (%) #One 185 50 60 86 #2 55 88 #3 60 92 #4 120 94.9 #5 185 97.2 #6 200 93 #7 210 88.5 #8 220 83

In Table 1, "first layer" to "third layer" mean the thickness of each layer, and the unit is um. In Table 1, the roundness means the roundness of the cooling filter rod, and the unit is %. The closer the roundness is to 100%, the closer the cross section of the cooling filter rod is to a circular shape.

In Table 1, the diameter of the cooling filter rod 220 is 7.2 mm, the first to third layers are all made of paper, and the first layer of the cooling filter rod 220 is based on the longitudinal direction of the rod. Contains activated carbon in an amount of 0.1 mg per 1 mm (0.1 mg/mm).

Referring to Table 1, when the thickness of the second layer 2222 is about 185 um or less (sections #1 to #5 in Table 1), the roundness increases as the thickness of the second layer increases. However, when the thickness of the second layer 2222 becomes thicker than about 185 um (categories #5 to #8 in Table 1), the roundness decreases as the thickness of the second layer increases.

If the thickness of the paper material layer forming the cooling filter rod 220 is too thin, even if a paper tube is formed, the roundness does not increase, and even if the thickness of the paper material layer is too thick, the roundness does not increase even if a paper tube is formed. don't

As the shape of the cooling filter rod 220 approaches the circular shape, the cross-sectional area of the passage in the cooling filter rod 220 increases, and the mainstream smoke can smoothly flow through the passage. Therefore, the closer the roundness of the cooling filter rod 220 is to 100%, the better. The roundness of the cooling filter rod 220 is preferably at least 90% or more.

Referring to Table 1, when the thickness of the second layer 2222 is about 60 um or less, the roundness becomes less than 90%. In addition, when the thickness of the second layer 2222 is about 60 um or less, it can be confirmed that the roundness value rapidly decreases according to the change in the thickness of the second layer.

Due to the thickness of the second layer being thinner than necessary, it becomes difficult to make the cooling filter rod 220 circular. In this case, the cooling filter rod 220 may be easily crushed by an external shock and may not be restored to its original shape. In addition, due to the thickness of the second layer being thinner than necessary, the paper does not adhere well to the winding machine, and the elasticity of the paper is reduced, resulting in a decrease in the production efficiency of the cooling filter rod 220. .

Referring to Table 1, when the thickness of the second layer 2222 is about 185 um or more, the roundness decreases as the thickness increases. When the thickness of the second layer 2222 is about 210 um or more, the roundness becomes less than 90%. In addition, when the thickness of the second layer 2222 is about 200 um or more, it can be confirmed that the roundness value rapidly decreases according to the change in the thickness of the second layer.

Due to the thickness of the second layer being thicker than necessary, it becomes difficult to make the cooling filter rod 220 circular. In addition, due to the thickness of the second layer being thicker than necessary, the rate of occurrence of cutting defects increases when cutting the paper forming the second layer, and the probability of damage to the cutting blade increases. Therefore, a problem in that the production work efficiency of the cooling filter rod 220 may decrease.

Considering the change tendency of the roundness value and the production efficiency of the cooling filter rod, it can be seen that the thickness of the second layer of the cooling filter rod 220 is preferably 60 um or more and 200 um or less. In addition, it can be seen that the roundness of the cooling filter rod is preferably 90% or more.

In Tables 2 and 3, the thicknesses of the first to third layers of the cooling filter rod 220, the amount of activated carbon included in the first layer and accordingly, BET, nicotine, according to an embodiment of the present disclosure. The amount, glycerin amount, mainstream smoke temperature and roundness were shown.

division Third layer (um) Second layer (um) 1st layer (um) activated carbon dosage
(mg/mm) #9 185 60 60 0 #10 60 0.1 #11 185 0 #12 185 0.1 #13 185 0.18 #14 185 0.2 #15 185 0.4 #16 185 0.5 #17 185 0.6

division BET (m ² /g) Nicotine (mg/cig.) Gly(mg/cig.) Main stream smoke temperature (℃) Roundness (%) #9 268 0.68 9.8 69.4 92.1 #10 287 0.63 9.3 68.3 92.0 #11 198 0.70 10.1 68.5 97.0 #12 216 0.65 9.6 67.4 97.2 #13 297 0.64 9.6 64.2 97.1 #14 318 0.64 9.5 63.4 96.8 #15 395 0.65 9.5 63.3 97.0 #16 441 0.64 9.7 63.3 97.2 #17 483 0.63 9.4 63.2 96.9

In Table 2, "activated carbon input amount" is the amount of activated carbon included in the first layer 2221 of the cooling filter rod 220, and is the load in the longitudinal direction (upstream to downstream direction) of the cooling filter rod 220. It means the mg content of activated carbon contained per 1mm of length.

In Table 3, "BET" means the BET specific surface area of the cooling filter rod 220. In Table 3, "nicotine" indicates the amount (mg) of nicotine generated per one (1 cigarette) of the aerosol generating product produced. In Table 3, "Gly" represents the amount (mg) of glycerin generated per one (1 cigarette) of the aerosol-generating product produced. In Table 3, "mainstream smoke temperature" represents the temperature of the aerosol discharged from the aerosol-generating article. In Tables 2 and 3, the diameter of the cooling filter rod 220 is 7.2 mm, and the first to third layers are all made of paper.

Referring to Table 2, as the amount of activated carbon filled in the first layer 2221 of the cooling filter rod 220 increases, the BET specific surface area of the cooling filter rod 220 increases, and the amount of nicotine and glycerin decreases, and the mainstream smoke temperature also decreases.

In the cooling filter rod 220 according to an embodiment of the present disclosure, activated carbon is included in the first layer located at the innermost side of the branch pipe, so that moisture contained in mainstream smoke and some volatile substances on moisture can be adsorbed by the activated carbon. there is. Therefore, the cooling by the adsorption of activated carbon is added to the cooling by the hollow structure, so that the temperature of the mainstream smoke can be effectively lowered.

Comparing the categories #11 to #17, when the amount of activated carbon is lowered from 0.2 mg/mm to 0.1 mg/mm (category #14 to #12), the amount of nicotine and glycerin is 0.01 mg/cig, respectively. and 0.1 mg/cig. However, the mainstream smoke temperature increases by 4 degrees. Up to the range where the activated carbon input amount is 0.2 mg/mm, as the activated carbon input amount increases, the amount of nicotine and glycerin has little difference, while the mainstream smoke temperature is greatly lowered.

On the other hand, when the amount of activated carbon increased from 0.2 mg/mm to 0.6 mg/mm (category #14 to #17), the amount of nicotine and glycerin decreased to 0.1 mg/cig, respectively. and 0.3 mg/cig. and the main smoke temperature is lowered by 0.2 degrees. In the range where the activated carbon input amount is 0.2 mg/mm or more, as the activated carbon input amount increases, not only the amount of nicotine and the amount of glycerin have little difference, but also the temperature of the mainstream smoke hardly decreases.

Accordingly, it can be seen that the amount of activated carbon included in the first layer of the cooling filter rod 220 is preferably about 0.18 mg/mm or more or about 0.2 mg/mm or more, considering the trend of the main smoke temperature change. Alternatively, it can be seen that it is preferable that the BET specific surface area of the cooling filter rod 220 is about 300 m ² /g or more.

Meanwhile, even when the amount of activated carbon is increased from 0.1 mg/mm to 0.6 mg/mm (category #12 to #17), the roundness of the cooling filter rod 220 hardly changes at about 97%. Even if activated carbon is filled in the first layer, it can be confirmed that the shape of the cooling filter rod including the first to third layers has little effect on the activated carbon content.

Comparing the above divisions #11 to #17, as the amount of activated carbon increased, the amount of nicotine and glycerin decreased. When the amount of activated carbon is above a certain level, the tendency to decrease the amount of nicotine and glycerin slows down, but it can be seen that they continuously decrease. When the amount of activated carbon was 0.6 mg/mm, the amount of nicotine was 0.70 mg/cig compared to the case where no activated carbon was added. to 0.63 mg/cig., a decrease of about 10%, and the amount of glycerin to 10.1 mg/cig. to 9.4 mg/cig., a decrease of about 7% (Categories #17 and #11).

A decrease in the amount of nicotine and a decrease in the amount of glycerin is a decrease in the amount of smoke during smoking. If the amount of nicotine and glycerin decreases beyond a certain level, the user's satisfaction and feeling of smoking may decrease due to inhalation of the aerosol-generating product, so the amount of atomization must be maintained above a certain level.

Therefore, in the results of the above divisions #11 to #17, considering the tendency for the amount of nicotine and/or the amount of glycerin to decrease even though the main smoke temperature change is almost unchanged, the BET specific surface area of the cooling filter rod 220 is about It is preferable to be 500 m ² /g or less (the amount of activated carbon is about 0.6 mg/mm or less).

As such, the cooling filter rod 220 according to an embodiment of the present disclosure may include a porous filler and have a BET specific surface area of 300 m ² /g or more and 500 m ² /g or less. Alternatively, the porous filler may be activated carbon, and the cooling filter rod 220 may include activated carbon at 0.2 mg/mm to 0.6 mg/mm or less.

According to embodiments of the present disclosure, the cooling filter rod 220 can lower the temperature of mainstream smoke from an aerosol-generating article by about 4 degrees to about 5 degrees compared to if the filter rod did not include a porous filler; , the amount of nicotine can be maintained at about 90% or more and the amount of glycerin at about 93% or more.

According to an embodiment of the present disclosure, the cooling filter rod 220 can increase the cooling effect of mainstream smoke through a physical adsorption method using a porous filler while suppressing a decrease in the amount of glycerin.

A user using the aerosol-generating article 2 may feel hot or uncomfortable even if the temperature of the mainstream smoke rises by 1 degree. In addition, when the temperature of the mainstream smoke rises, burns may occur due to inhalation of the mainstream smoke. The cooling filter rod 220 according to an embodiment of the present disclosure can effectively reduce the temperature of mainstream smoke while maintaining the amount of nicotine and glycerin above a certain level.

In addition, in the cooling filter rod 220 according to an embodiment of the present disclosure, the thickness of the middle layer (second layer) constituting the filter rod is adjusted within an appropriate range, so that filter quality can be improved and filter production efficiency can be reduced. can prevent

4 to 6 show examples of an aerosol-generating article 2 inserted into an aerosol-generating device.

Referring to FIG. 4 , the aerosol generating device 1 includes a battery 11 , a controller 12 and a heater 13 . Referring to FIGS. 5 and 6 , the aerosol generating device 1 further includes a vaporizer 14 . In addition, the aerosol generating article 2 may be inserted into the inner space of the aerosol generating device 1 .

Components related to the present embodiment are shown in the aerosol generating device 1 shown in FIGS. 4 to 6 . Therefore, those of ordinary skill in the art related to this embodiment can understand that other general-purpose components other than those shown in FIGS. 4 to 6 may be further included in the aerosol generating device 1. .

In addition, although FIGS. 5 and 6 show that the aerosol generating device 1 includes the heater 13, the heater 13 may be omitted if necessary.

4 shows that the battery 11, the controller 12, and the heater 13 are arranged in a line. In addition, FIG. 5 shows that the battery 11, the control unit 12, the vaporizer 14 and the heater 13 are arranged in a line. Also, in FIG. 6 , the vaporizer 14 and the heater 13 are shown arranged in parallel. However, the internal structure of the aerosol generating device 1 is not limited to that shown in FIGS. 4 to 6 . In other words, depending on the design of the aerosol generating device 1, the arrangement of the battery 11, the control unit 12, the heater 13 and the vaporizer 14 can be changed.

When the aerosol-generating article 2 is inserted into the aerosol-generating device 1 , the aerosol-generating device 1 may operate the heater 13 and/or the vaporizer 14 to generate an aerosol. The aerosol generated by the heater 13 and/or vaporizer 14 passes through the aerosol-generating article 2 and is delivered to the user.

If desired, the aerosol generating device 1 may heat the heater 13 even when the aerosol generating article 2 is not inserted into the aerosol generating device 1 .

The battery 11 supplies power used for the operation of the aerosol generating device 1 . For example, the battery 11 may supply power so that the heater 13 or the vaporizer 14 may be heated, and may supply power necessary for the control unit 12 to operate. In addition, the battery 11 may supply power necessary for the display, sensor, motor, etc. installed in the aerosol generating device 1 to operate.

The controller 12 controls the overall operation of the aerosol generating device 1 . Specifically, the controller 12 controls the operation of the battery 11, the heater 13, and the vaporizer 14 as well as other components included in the aerosol generating device 1. In addition, the controller 12 may determine whether or not the aerosol generating device 1 is in an operable state by checking the state of each component of the aerosol generating device 1 .

The controller 12 includes at least one processor. The processor may be implemented as an array of a plurality of logic gates, or may be implemented as a combination of a general-purpose microprocessor and a memory in which programs executable by the microprocessor are stored. In addition, those having ordinary knowledge in the art to which this embodiment pertains can understand that it may be implemented in other types of hardware.

The heater 13 may be heated by power supplied from the battery 11 . For example, if the cigarette is inserted into the aerosol generating device 1, the heater 13 may be positioned outside the cigarette. Thus, the heated heater 13 may increase the temperature of the aerosol generating material in the cigarette.

The heater 13 may be an electrical resistive heater. For example, the heater 13 may include an electrically conductive track, and the heater 13 may be heated as current flows through the electrically conductive track. However, the heater 13 is not limited to the above example, and may be applied without limitation as long as it can be heated to a desired temperature. Here, the desired temperature may be previously set in the aerosol generating device 1 or may be set to a desired temperature by the user.

Meanwhile, as another example, the heater 13 may be an induction heating type heater. Specifically, the heater 13 may include an electrically conductive coil for heating the cigarette by an induction heating method, and the cigarette may include a susceptor capable of being heated by the induction heating type heater.

For example, the heater 13 may include a tubular heating element, a plate heating element, a needle heating element, or a rod-shaped heating element, and depending on the shape of the heating element, the inside or outside of the aerosol-generating article 2 Can be heated outside.

In addition, a plurality of heaters 13 may be disposed in the aerosol generating device 1 . At this time, the plurality of heaters 13 may be arranged to be inserted inside the aerosol generating article 2 or may be arranged outside the aerosol generating article 2 . Also, some of the plurality of heaters 13 may be arranged to be inserted inside the aerosol-generating article 2 and others may be arranged outside the aerosol-generating article 2 . In addition, the shape of the heater 13 is not limited to the shape shown in FIGS. 4 to 6 and may be manufactured in various shapes.

Vaporizer 14 may heat the liquid composition to generate an aerosol, which may pass through aerosol-generating article 2 and be delivered to a user. In other words, the aerosol generated by the vaporizer 14 can move along the air flow path of the aerosol generating device 1, and the air flow path allows the aerosol generated by the vaporizer 14 to pass through the cigarette and deliver to the user. It can be configured to be.

For example, vaporizer 14 may include, but is not limited to, a liquid reservoir, a liquid delivery means, and a heating element. For example, the liquid reservoir, liquid delivery means and heating element may be included in the aerosol-generating device 1 as independent modules.

The liquid reservoir may store a liquid composition. For example, the liquid composition may be a liquid containing a tobacco-containing material including a volatile tobacco flavor component, or may be a liquid containing a non-tobacco material. The liquid storage unit may be manufactured to be detachable from/attached to/from the vaporizer 14, or may be manufactured integrally with the vaporizer 14.

For example, liquid compositions may include water, solvents, ethanol, plant extracts, fragrances, flavors, or vitamin mixtures. Fragrance may include menthol, peppermint, spearmint oil, various fruit flavor components, etc., but is not limited thereto. Flavoring agents can include ingredients that can provide a variety of flavors or flavors to the user. The vitamin mixture may be a mixture of at least one of vitamin A, vitamin B, vitamin C, and vitamin E, but is not limited thereto. Liquid compositions may also contain aerosol formers such as glycerin and propylene glycol.

The liquid delivery means may deliver the liquid composition of the liquid reservoir to the heating element. For example, the liquid delivery means may be a wick such as cotton fiber, ceramic fiber, glass fiber, or porous ceramic, but is not limited thereto.

The heating element is an element for heating the liquid composition delivered by the liquid delivery means. For example, the heating element may be a metal heating wire, a metal heating plate, or a ceramic heater, but is not limited thereto. In addition, the heating element may be composed of a conductive filament such as nichrome wire, and may be disposed in a structure wound around the liquid delivery means. The heating element may be heated by supplying current, and may transfer heat to the liquid composition in contact with the heating element to heat the liquid composition. As a result, an aerosol may be generated.

For example, the vaporizer 14 may be referred to as a cartomizer or an atomizer, but is not limited thereto.

On the other hand, the aerosol generating device 1 may further include general-purpose components other than the battery 11, the controller 12, the heater 13, and the vaporizer 14. For example, the aerosol generating device 1 may include a display capable of outputting visual information and/or a motor for outputting tactile information. In addition, the aerosol generating device 1 may include at least one sensor (a puff detection sensor, a temperature detection sensor, a cigarette insertion detection sensor, etc.). In addition, the aerosol generating device 1 may be manufactured in a structure in which external air may flow in or internal gas may flow out even when the aerosol generating article 2 is inserted.

Although not shown in FIGS. 4 to 6 , the aerosol generating device 1 may constitute a system together with a separate cradle. For example, the cradle can be used for charging the battery 11 of the aerosol generating device 1 . Alternatively, the heater 13 may be heated in a state in which the cradle and the aerosol generating device 1 are coupled.

As described above, according to at least one of the embodiments of the present disclosure, the temperature of the mainstream smoke can be effectively lowered through a physical adsorption method.

According to at least one of the embodiments of the present disclosure, by adjusting the thickness of the intermediate layer constituting the filter rod, filter quality may be improved and filter production efficiency may be prevented from being lowered.

According to at least one of the embodiments of the present disclosure, the temperature of the mainstream smoke can be effectively lowered through the inflow of outside air through the perforation.

According to at least one of the embodiments of the present disclosure, by lowering the temperature of mainstream smoke, it is possible to reduce discomfort that a user may feel when smoking.

According to at least one of the embodiments of the present disclosure, the risk of burns to a user may be reduced by lowering the temperature of mainstream smoke.

1-6, an aerosol-generating article 2 according to one aspect of the present disclosure includes an aerosol-generating rod 21 from which mainstream smoke is generated; and a filter rod 220 located downstream of the aerosol-generating rod and made up of a plurality of layers, wherein the filter rod 220 includes a first layer 2221 in which a porous filler 2221a is included in paper, and and a second layer 2222 formed of paper and positioned outside the first layer, wherein the second layer 2222 has a thickness of 60 um or more and 200 um or less.

In addition, according to another aspect of the present disclosure, the roundness of the filter rod 220 may be 90% or more and 99% or less.

Also, according to another aspect of the present disclosure, the thickness of the first layer 2221 may be equal to or smaller than the thickness of the second layer 2222 .

In addition, according to another aspect of the present disclosure, the filter rod 220 may have a BET specific surface area of 300 m ² /g or more and 500 m ² /g or less.

In addition, according to another aspect of the present disclosure, the porous filler 2221a includes activated carbon, and the activated carbon is made from at least one of coconut husk, palm, wood, wood board, bamboo, or coal, and the activated carbon The form may include at least one of a bead form, a granule form, and a fiber form.

Also, according to another aspect of the present disclosure, the porous filler 2221a may adsorb moisture contained in the mainstream smoke.

In addition, according to another aspect of the present disclosure, the porous filler 2221a includes activated carbon, and the filter rod 220, in the longitudinal direction from upstream to downstream, contains 0.2 mg/mm to 0.6 mg/mm of the activated carbon. It can be included in mg/mm.

In addition, according to another aspect of the present disclosure, the filter rod 220 further includes a third layer 2223 formed of paper and positioned outside the second layer 2222, The first to third layers may be laminated together to form a hollow paper pipe.

Further, according to another aspect of the present disclosure, the filter rod 220 passes through the first layer 2221 and the second layer 2222, and extends in a circumferential direction of the filter rod 220. It may include a plurality of perforations 223 that are arranged.

Further, according to another aspect of the present disclosure, a heated aerosol generating device 1 may be provided to generate an aerosol through the aerosol generating article 2 .

Certain or other embodiments of the present disclosure described above are not mutually exclusive or distinct from each other. Certain embodiments or other embodiments of the present disclosure described above are not mutually exclusive or distinct from each other. Any or all elements of the embodiments of the disclosure described above may be combined with another or combined with each other in configuration or function).

For example, configuration A described in a specific embodiment and/or drawing may be combined with configuration B described in another embodiment and/or drawing. That is, even if the coupling between components is not directly described, it means that coupling is possible except for cases where coupling is impossible (For example, a configuration “A” described in one embodiment of the disclosure and the drawings). and a configuration "B" described in another embodiment of the disclosure and the drawings may be combined with each other. Namely, although the combination between the configurations is not directly described, the combination is possible except in the case where it is described that the combination is impossible).

The above detailed description should not be construed as limiting in all respects and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention (although embodiments have been described with reference to a number of illustrative embodiments Its, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope of the principles of this disclosure.More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims.In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art).

Claims (10)

an aerosol generating rod from which mainstream smoke is produced; and
A filter rod made of a plurality of layers located downstream of the aerosol generating rod;
The filter rod,
A first layer including a porous filler in paper and a second layer formed of paper and positioned outside the first layer,
The second layer,
An aerosol-generating article having a thickness greater than or equal to 60 um and less than or equal to 200 um.
According to claim 1,
The roundness of the filter rod is
An aerosol-generating article that is greater than or equal to 90% and less than or equal to 99%.
According to claim 1,
wherein the thickness of the first layer is less than or equal to the thickness of the second layer.
According to claim 1,
The filter segment is
An aerosol-generating article having a BET specific surface area greater than or equal to 300 m ² /g and less than or equal to 500 m ² /g.
According to claim 1,
The porous filler is
contains activated carbon;
The activated carbon is prepared from at least one of coconut husk, palm, wood, wood board, bamboo or coal,
The aerosol-generating article of claim 1, wherein the form of the activated carbon comprises at least one of a bead form, a granule form, and a fiber form.
According to claim 1,
The porous filler is
An aerosol-generating article adsorbing moisture contained in the mainstream smoke.
According to claim 1,
The porous filler includes activated carbon,
The filter rod,
An aerosol-generating article comprising from 0.2 mg/mm to 0.6 mg/mm of said activated carbon in an upstream to downstream direction of its length.
According to claim 1,
The filter rod,
Further comprising a third layer formed of paper and positioned outside the second layer,
wherein the first to third layers are laminated together to form a hollow paper tube.
According to claim 1,
The filter rod,
An aerosol-generating article comprising a plurality of perforations penetrating the first layer and the second layer and arranged in a circumferential direction of the filter rod.
A heated aerosol-generating device for generating an aerosol via an aerosol-generating article according to claim 1 .

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