Cooling sheet composition for aerosol-generating article, cooling sheet for aerosol-generating article, and aerosol-generating article comprising same

Abstract

The present invention relates to a cooling sheet composition, a cooling sheet for an aerosol-generating article, and an aerosol-generating article comprising same, the composition being capable of producing a cooling sheet which can enhance the flow of mainstream smoke while having an excellent cooling effect.

Description

Cooling sheet composition for an aerosol generating article, cooling sheet for an aerosol generating article, and an aerosol generating article comprising the same

[0001] The present invention relates to a composition capable of realizing a cooling sheet that has excellent cooling effect and can improve mainstream flow properties, a cooling sheet for an aerosol generating article, and an aerosol generating article comprising the same.

[0002]

[0003] In the case of heated stick products, heating using a dedicated device is essential to produce an impact in the medium (including aerosol generating substances containing tobacco raw materials such as cut tobacco and flavorings). Here, impact refers to the sensation felt in the smoker's airway when inhaling tobacco smoke, and is one of the evaluation factors used when assessing tobacco characteristics (taste). For heated stick devices developed to date to produce an impact, the temperature program is designed to enable high-temperature heating, taking into account heat transfer to the inside of the medium. The heating temperature is typically between 200°C and 400°C, and unlike traditional cigarettes that burn and inhale cut tobacco, a large amount of water vapor is produced when the stick in the medium is heated through the device.

[0004] The temperature level generated inside the medium through heating is between 100°C and 200°C. The temperature of the airflow generated inside the medium is also similar, and if there is no cooling structure downstream of the medium, the smoker may inhale the hot air.

[0005] Accordingly, conventional cooling structures for smoking products have utilized methods to cool aerosols by changing airflow in one direction or mixing airflow through micropores, or by lowering the temperature of aerosols by utilizing physical properties with a low glass transition temperature (Tg).

[0006] Meanwhile, as the airflow generated by heating the medium passes through the cooling structure and cools, a problem of reduced flowability may occur, which may consequently lead to a deterioration in the physical properties of smoking perceived by the smoker.

[0007] Accordingly, there is increasing demand and interest in technology that can improve smokers' satisfaction by facilitating the cooling of the mainstream smoke temperature during smoking while also improving smoke transfer.

[0008] [Prior Art Literature]

[0009] [Patent Literature]

[0010] (Patent Document 1) Korean Published Patent Application 10-2022-0022943 (Published March 2, 2022)

[0011]

[0012] The present invention provides a cooling sheet capable of achieving excellent cooling efficiency and improved smoke flow by utilizing a cooling sheet composition comprising a heat absorbent and a flow improver, and an aerosol generating article comprising the same.

[0013] However, the problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned problems will be clearly understood by those skilled in the art from the description below.

[0014]

[0015] One embodiment of the present invention provides a cooling sheet composition for an aerosol generating article comprising: a cellulose-based material; an endothermic agent comprising a sugar alcohol-based compound having a melting point of 100°C or lower; and a flow improver comprising a double bond-containing cycloether-based compound.

[0016] In addition, one embodiment of the present invention provides a cooling sheet comprising the cooling sheet composition for the aerosol generating article.

[0017] Additionally, one embodiment of the present invention comprises a medium portion; a filter portion; and a cooling portion provided between the medium portion and the filter portion; wherein the cooling portion provides an aerosol generating article comprising the cooling sheet.

[0018]

[0019] A cooling sheet composition for an aerosol generating article according to one embodiment of the present invention can easily realize a cooling sheet having improved cooling properties and improved aerosol flow properties.

[0020] In addition, the cooling sheet according to one embodiment of the present invention can effectively improve the flow of mainstream smoke when applied to an aerosol generating article, along with excellent cooling properties.

[0021] In addition, the aerosol generating article according to one embodiment of the present invention includes the cooling sheet, thereby realizing improved cooling properties and mainstream smoke flow properties, and can easily provide excellent smoking quality to smokers.

[0022] The effects of the present invention are not limited to those described above, and unmentioned effects will be clearly understood by those skilled in the art from the present specification and the accompanying drawings.

[0023]

[0024] FIG. 1 is a drawing exemplarily showing an aerosol generating article according to one embodiment of the present invention.

[0025] FIG. 2 is a schematic cross-sectional view of an aerosol generating article according to one embodiment of the present invention.

[0026]

[0027] In this specification, singular expressions include plural expressions unless the context clearly indicates otherwise.

[0028] In this specification, the terms “comprise” and / or “comprising” specify the presence of the mentioned features, steps, numbers, actions, parts, elements, and / or groups thereof, and do not exclude the presence or addition of one or more other features, steps, numbers, actions, parts, elements, and / or groups thereof.

[0029] In this specification, "at least one of a, b and c" may include a, b, or c alone, or two or more combinations selected from the group consisting of a, b, and c.

[0030] In this specification, the term "a and / or b" is used to mean "a or b" and "a and b".

[0031] In this specification, the term "connection" refers not only to the direct structural connection of certain members but also includes the concept of indirect connection through the interposition of other members. Furthermore, in this specification, "connection" may include not only structural matters but also cases where one member is electrically connected to another. For example, the statement that a first component and a second component are connected may mean that they are structurally connected directly or indirectly, or are electrically connected.

[0032] Where multiple embodiments are described in this specification, each embodiment may be combined unless specifically stated otherwise. In this case, the effects of the present invention may be defined as including effects derived from each embodiment and effects resulting from the organic combination of each embodiment. For example, even if embodiments 1 and 2 are described independently in this specification, unless the context clearly indicates otherwise, embodiments 1 and 2 may be organically combined with each other, and the effects of the present invention may include effects resulting from the combination of embodiments 1 and 2.

[0033] In this specification, a range of numerical values ​​indicated by the term "to" represents a range of numerical values ​​that includes the values ​​listed before and after the term as the lower and upper limits, respectively. If multiple numerical values ​​are disclosed for the upper and lower limits of an arbitrary numerical range, the range of numerical values ​​disclosed in this specification may be understood as a range of numerical values ​​in which any one of the multiple lower limits and any one of the multiple upper limits are respectively the lower limit and upper limit. For example, if the specification states a to b or c to d, it may be understood as stating a to b, a to d, c to d, or c to b.

[0034] In this specification, terms such as “about” or “substantially” refer to a reasonable amount of variation of a term modified so as not to significantly alter the final result. Such terms may be interpreted to include a variation of at least ±5% or at least ±10% to the extent that the variation does not alter or invalidate the meaning of the word.

[0035] In this specification, a “layer” or “film” may include cases where, when observing the region in which the layer or film exists, it is formed over the entire region, or cases where it is formed only in a part of the region. For example, the surface of the layer or film may be defined as having a flat shape, a non-flat shape, and combinations thereof; or a continuous shape, a discontinuous shape, and combinations thereof. For example, when another member is composed of a layer or film directly on a member, the coverage of the other member on the surface of the member may be defined as 1% or more, 5% or more, 10% or more, 20% or more, 30% or more, 40% or more, 50% or more, 60% or more, 70% or more, 80% or more, 85% or more, 90% or more, 95% or more, or 99% or more. For example, it may also be defined as a “layer” or “film” when a plurality of particles form a clustered structure.

[0036] In this specification, when another member is placed directly on top of one member, it may be defined that no member is interposed between the one member and the other member.

[0037] In this specification, "aerosol generating article" may mean any smokeable product or any product capable of providing a smoking experience, regardless of whether it is based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, or tobacco substitutes. For example, an aerosol generating article may include smokeable products such as cigarettes, cigars, and cigarillos. As another example, the aerosol generating article may be a combustible smoking article or a heated smoking article, specifically a heated smoking article.

[0038] In this specification, "Upstream" or "upstream direction" may mean a direction away from the smoker's bulb, and "Downstream" or "downstream direction" may mean a direction toward the smoker's bulb. The terms upstream and downstream may be used to describe the relative positions of the elements constituting the aerosol generating article.

[0039] In this specification, "longitudinal direction" may mean a direction corresponding to the longitudinal axis of the aerosol generating article.

[0040] In this specification, the melting point of a compound can be measured by differential scanning calorimetry ("DSC") as is known to those skilled in the art.

[0041] In this specification, "solids" may refer to all constituent components excluding the solvent included in the composition.

[0042]

[0043] Hereinafter, the configuration of the present invention will be described in more detail with reference to the drawings.

[0044] One embodiment of the present invention provides a cooling sheet composition for an aerosol generating article comprising: a cellulose-based material; an endothermic agent comprising a sugar alcohol-based compound having a melting point of 100°C or lower; and a flow improver comprising a double bond-containing cycloether-based compound.

[0045] A cooling sheet composition for an aerosol generating article according to one embodiment of the present invention can easily realize a cooling sheet having improved cooling properties and improved aerosol flow properties. Specifically, by including a heat-absorbing agent in the cooling sheet composition, the manufactured cooling sheet can effectively reduce the temperature of the mainstream smoke when applied to an aerosol generating article, thereby improving smoking properties. Meanwhile, as the temperature of the mainstream smoke decreases, the flowability of the mainstream smoke may deteriorate. Accordingly, one embodiment of the present invention can easily provide excellent smoking properties to a smoker by adding a flow-improving agent having a specific structure in addition to the heat-absorbing agent to the cooling sheet composition, thereby enhancing the flowability of the aerosol generating article to which the cooling sheet is applied.

[0046] According to one embodiment of the present invention, the cellulose-based material may include a cellulose-based powder having a size of 10 μm or more and 500 μm or less. Specifically, the size of the cellulose-based powder may be 30 μm or more and 450 μm or less, 50 μm or more and 400 μm or less, 100 μm or more and 300 μm or less, 150 μm or more and 200 μm or less, 10 μm or more and 200 μm or less, 50 μm or more and 150 μm or less, 150 μm or more and 500 μm or less, or 200 μm or more and 400 μm or less. When the size of the cellulose-based material is within the aforementioned range, physical strength can be imparted to the cooling sheet while suppressing the reduction of smoke flowability of the cooling sheet.

[0047] According to one embodiment of the present invention, the cellulose-based material may include at least one of microcrystalline cellulose (MCC), methylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, and hydroxyethylcellulose. Specifically, the cellulose-based material may include at least microcrystalline cellulose powder.

[0048] According to one embodiment of the present invention, the cooling sheet composition may comprise a solid component and a solvent. Specifically, the solid component may refer to components excluding the solvent included in the cooling sheet composition. For example, the solid component may comprise the cellulose-based material, the heat-absorbing agent, and the flow improver. Additionally, the solid component may comprise the cellulose-based material, the heat-absorbing agent, the flow improver, and a binder described below.

[0049] According to one embodiment of the present invention, based on 100 parts by weight of solids included in the cooling sheet composition, the content of the cellulose-based material may be 40 parts by weight or more and 70 parts by weight or less. Specifically, based on 100 parts by weight of solids, the content of the cellulose-based material may be 45 parts by weight or more and 65 parts by weight or less, 50 parts by weight or more and 60 parts by weight or less, 40 parts by weight or more and 60 parts by weight or less, 45 parts by weight or more and 55 parts by weight or less, 50 parts by weight or more and 70 parts by weight or less, or 55 parts by weight or more and 65 parts by weight or less. When the content of the cellulose-based material is within the aforementioned range, the cooling sheet composition can easily realize a cooling sheet having improved physical strength and durability.

[0050] According to one embodiment of the present invention, the heat-absorbing agent may include a sugar alcohol-based compound having a melting point of 100°C or lower. Specifically, the melting point of the sugar alcohol-based compound may be 70°C or higher and 100°C or lower, 75°C or higher and 100°C or lower, 80°C or higher and 100°C or lower, 85°C or higher and 100°C or lower, 90°C or higher and 100°C or lower, or 95°C or higher and 100°C or lower. By using the sugar alcohol-based compound satisfying the aforementioned melting point range as a heat-absorbing agent, the cooling sheet composition can effectively provide a cooling sheet with excellent cooling efficiency.

[0051] According to one embodiment of the present invention, the heat-absorbing agent may include at least one of sorbitol and xylitol. Since sorbitol and xylitol correspond to sugar alcohol-based compounds satisfying the melting point of the aforementioned range, a cooling sheet composition capable of realizing a cooling sheet with improved cooling performance can be easily provided. Meanwhile, in addition to sorbitol and xylitol, the heat-absorbing agent may additionally include a sugar alcohol-based compound satisfying the aforementioned melting point range.

[0052] According to one embodiment of the present invention, the heat absorber may comprise two or more sugar alcohol-based compounds having different melting points. For example, the heat absorber may comprise a first sugar alcohol-based compound and a second sugar alcohol-based compound. In this case, the melting point of the first sugar alcohol-based compound may be lower than the melting point of the second sugar alcohol-based compound. Specifically, the weight ratio of the second sugar alcohol-based compound to the first sugar alcohol-based compound may be 1:1 to 1:1.5, 1:1 to 1:1.3, 1:1 to 1:1.1, or 1:1.3 to 1:1.5. When the weight ratio of the first sugar alcohol-based compound to the second sugar alcohol-based compound satisfies the aforementioned range, the cooling sheet manufactured using the cooling sheet composition can effectively reduce the temperature of the alcohol smoke.

[0053] According to one embodiment of the present invention, based on 100 parts by weight of solids included in the cooling sheet composition, the content of the heat-absorbing agent may be 20 parts by weight or more and 50 parts by weight or less. Specifically, based on 100 parts by weight of solids, the content of the heat-absorbing agent may be 25 parts by weight or more and 45 parts by weight or less, 30 parts by weight or more and 40 parts by weight or less, 20 parts by weight or more and 40 parts by weight or less, 25 parts by weight or more and 40 parts by weight or less, 35 parts by weight or more and 50 parts by weight or less, or 40 parts by weight or more and 50 parts by weight or less. By adjusting the content of the heat-absorbing agent included in the cooling sheet composition to the aforementioned range, a cooling sheet with excellent cooling properties can be easily manufactured.

[0054] According to one embodiment of the present invention, the flow improver may include a double-bond containing cycloether-based compound. Specifically, the cycloether-based compound may be a tetragonal ring compound, a pentagonal ring compound, or a hexagonal ring compound. Additionally, the cycloether-based compound may contain carbon-oxygen double bonds and carbon-carbon double bonds within its structure. By using a double-bond containing cycloether-based compound having the aforementioned structure as a flow improver, the aerosol flowability of the cooling sheet can be effectively improved.

[0055] According to one embodiment of the present invention, the flow improver may include a compound represented by the following chemical formula 1:

[0056] [Chemical Formula 1]

[0057]

[0058] In the above Chemical Formula 1, R1 and R2 are each independently a straight-chain or branched-chain alkyl group having 10 to 20 carbon atoms. Specifically, in the above Chemical Formula 1, R1 and R2 may each independently be a straight-chain alkyl group, and the number of carbon atoms contained in the alkyl group may be 10 or more and 20 or less, 12 or more and 18 or less, 14 or more and 16 or less, 10 or more and 15 or less, or 14 or more and 20 or less. By using a flow improver comprising a compound represented by the above Chemical Formula 1, the cooling sheet composition can easily realize a cooling sheet with excellent cooling efficiency for mainstream smoke and improved flowability of mainstream smoke.

[0059] According to one embodiment of the present invention, the content of the flow improver may be 1 part by weight or more and 5 parts by weight or less, based on 100 parts by weight of solids included in the cooling sheet composition. Specifically, based on 100 parts by weight of solids, the content of the flow improver may be 2 parts by weight or more and 4 parts by weight or less, 1 part by weight or more and 3 parts by weight or less, or 2 parts by weight or more and 5 parts by weight or less. By adjusting the content of the flow improver included in the cooling sheet composition to the aforementioned range, the smoke transfer ability of the cooling sheet can be effectively improved.

[0060] According to one embodiment of the present invention, the weight ratio of the flow improver to the heat endogenator may be 1:5 to 1:25. Specifically, the weight ratio of the flow improver to the heat endogenator included in the cooling sheet composition may be 1:7.5 to 1:22.5, 1:10 to 1:20, 1:10 to 1:15, 1:5 to 1:20, 1:8 to 1:18, 1:10 to 1:14, 1:10 to 1:25, 1:12 to 1:20, or 1:15 to 1:20. When the weight ratio of the flow improver to the heat endogenator is within the aforementioned range, the cooling sheet composition can easily realize a cooling sheet having improved cooling properties and improved main flow properties.

[0061] According to one embodiment of the present invention, the cooling sheet composition for an aerosol generating article may further include a binder. The binder may be any used in the art without limitation. For example, the binder may include at least one of hydroxypropylcellulose (HPC), hydroxypropylmethylcellulose (HPMC), carboxymethylcellulose (CMC), polyvinylpyrrolidone (PVP), sodium alginate, xanthan gum, guar gum, gellan gum, and gum arabic, but the type of binder is not limited.

[0062] According to one embodiment of the present invention, based on 100 parts by weight of solids included in the cooling sheet composition, the content of the binder may be 1 part by weight or more and 10 parts by weight or less, 2.5 parts by weight or more and 7.5 parts by weight or less, 4 parts by weight or more and 6 parts by weight or less, 1 part by weight or more and 5 parts by weight or less, 3 parts by weight or more and 5 parts by weight or less, 5 parts by weight or more and 10 parts by weight or less, or 5 parts by weight or more and 8 parts by weight or less. When the content of the binder is within the aforementioned range, the cooling sheet composition can easily realize a cooling sheet having improved physical strength and durability.

[0063] According to one embodiment of the present invention, the cooling sheet composition for the aerosol generating article may include a solvent. The solvent may be any used in the art without limitation, and, for example, the solvent may include water.

[0064]

[0065] One embodiment of the present invention provides a cooling sheet comprising the cooling sheet composition for the aerosol generating article.

[0066] A cooling sheet according to one embodiment of the present invention can effectively improve the flow of mainstream smoke when applied to an aerosol generating article, along with excellent cooling properties.

[0067] According to one embodiment of the present invention, the cooling sheet may comprise a dried product of the cooling sheet composition. That is, the cooling sheet may comprise a cellulose-based material, a heat absorbent, a flow improver, and a binder. In this case, the cellulose-based material, the heat absorbent, the flow improver, and the binder in the cooling sheet according to the present embodiment may each be the same as the cellulose-based material, the heat absorbent, the flow improver, and the binder in the cooling sheet composition according to the aforementioned embodiment.

[0068] According to one embodiment of the present invention, based on 100 parts by weight of the cooling sheet, the content of the cellulose-based material may be 40 parts by weight or more and 70 parts by weight or less, 45 parts by weight or more and 65 parts by weight or less, 50 parts by weight or more and 60 parts by weight or less, 40 parts by weight or more and 60 parts by weight or less, 45 parts by weight or more and 55 parts by weight or less, 50 parts by weight or more and 70 parts by weight or less, or 55 parts by weight or more and 65 parts by weight or less. When the content of the cellulose-based material is within the aforementioned range, the cooling sheet may have excellent physical strength and durability.

[0069] According to one embodiment of the present invention, based on 100 parts by weight of the cooling sheet, the content of the heat-absorbing agent may be 20 parts by weight or more and 50 parts by weight or less, 25 parts by weight or more and 45 parts by weight or less, 30 parts by weight or more and 40 parts by weight or less, 20 parts by weight or more and 40 parts by weight or less, 25 parts by weight or more and 40 parts by weight or less, 35 parts by weight or more and 50 parts by weight or less, or 40 parts by weight or more and 50 parts by weight or less. When the content of the heat-absorbing agent is within the aforementioned range, the cooling properties of the cooling sheet can be effectively improved.

[0070] According to one embodiment of the present invention, based on 100 parts by weight of the cooling sheet, the content of the flow improver may be 1 part by weight or more and 5 parts by weight or less, 2 parts by weight or more and 4 parts by weight or less, 1 part by weight or more and 3 parts by weight or less, or 2 parts by weight or more and 5 parts by weight or less. When the content of the flow improver is within the aforementioned range, the smoke transfer ability of the cooling sheet can be effectively improved.

[0071] According to one embodiment of the present invention, based on 100 parts by weight of the cooling sheet, the content of the binder may be 1 part by weight or more and 10 parts by weight or less, 2.5 parts by weight or more and 7.5 parts by weight or less, 4 parts by weight or more and 6 parts by weight or less, 1 part by weight or more and 5 parts by weight or less, 3 parts by weight or more and 5 parts by weight or less, 5 parts by weight or more and 10 parts by weight or less, or 5 parts by weight or more and 8 parts by weight or less. When the content of the binder is within the aforementioned range, the cooling sheet may have improved physical strength and durability.

[0072] According to one embodiment of the present invention, the thickness of the cooling sheet may be 50 μm or more and 500 μm or less, 80 μm or more and 450 μm or less, 100 μm or more and 400 μm or less, 200 μm or more and 300 μm or less, 50 μm or more and 300 μm or less, 100 μm or more and 250 μm or less, 180 μm or more and 240 μm or less, 200 μm or more and 500 μm or less, or 200 μm or more and 400 μm or less. The cooling sheet having the aforementioned thickness has excellent cooling properties, and when provided in the cooling portion of the aerosol generating article described later, it can effectively prevent the flowability of the main smoke from decreasing.

[0073]

[0074] One embodiment of the present invention comprises a medium portion; a filter portion; and a cooling portion provided between the medium portion and the filter portion; wherein the cooling portion provides an aerosol generating article comprising the cooling sheet.

[0075] An aerosol generating article according to one embodiment of the present invention includes the cooling sheet, thereby realizing improved cooling properties and mainstream smoke flow properties, and can easily provide excellent smoking quality to a smoker.

[0076] According to one embodiment of the present invention, the aerosol generating article may include a medium portion, a filter portion, and a cooling portion. Specifically, the medium portion may contain a component that supplies an active ingredient. In this case, other components included in the aerosol generating article, such as the medium portion and the filter portion, may be any components used in the industry for aerosol generating articles without limitation, in addition to the cooling portion.

[0077] According to one embodiment of the present invention, the cooling sheet may be clamped and provided in the cooling portion. By clamping the cooling sheet and providing it in the cooling portion, the airflow of the aerosol generating article can flow more smoothly.

[0078] According to one embodiment of the present invention, the mass per unit volume of the cooling sheet included in the cooling part is 0.1 mg / mm 3 3 mg / mm or more 3 ≤ 0.3 mg / mm 3 Above 2.5 mg / mm 3 ≤ 0.5 mg / mm 3 Above 2 mg / mm 3 ≤ 0.5 mg / mm 3 Above 1.5 mg / mm 3 ≤ 0.5 mg / mm 3 1 mg / mm or more 3 ≤ 0.1 mg / mm 3 Above 1.5 mg / mm 3 ≤ 0.1 mg / mm 3 1 mg / mm or more 3 ≤ 0.1 mg / mm 3 Above 0.5 mg / mm 3 Less than, or 1.5 mg / mm 3 3 mg / mm or more 3 It may be less than or equal to the following. When the mass per unit volume of the cooling sheet included in the cooling section is within the aforementioned range, the aerosol generating article can easily realize improved cooling properties and mainstream flow properties.

[0079] FIG. 1 is a drawing exemplarily showing an aerosol generating article according to one embodiment of the present invention.

[0080] Referring to FIG. 1, the aerosol generating article (100) may include a filter portion (110) wrapped with a filter paper (110a), a medium portion (120) wrapped with a medium portion wrapper (120a), a cooling portion (130) provided between the medium portion (120) and the filter portion (110), and a tip paper (140).

[0081] According to one embodiment of the present invention, the medium may include a smoking material. For example, the smoking material may include a tobacco material. The tobacco material may include tobacco leaf fragments, tobacco stems, or materials processed from these. As a more specific example, the tobacco material may include crushed tobacco leaves, crushed reconstituted tobacco, puffed tobacco leaves, puffed main veins, and plate-shaped leaves. However, it is not limited thereto. Additionally, the tobacco material may have the form of tobacco leaves, tobacco particles, tobacco sheets, tobacco beads, tobacco granules, or tobacco extracts, but is not limited thereto.

[0082] According to one embodiment of the present invention, the medium may contain other additive substances such as flavoring agents, humectants, and / or acetate compounds. For example, the flavoring agent may include licorice, sucrose, fructose syrup, isosweet, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon oil, orange oil, mint oil, cinnamon, caraway, cognac, jasmine, chamomile, menthol, cinnamon, ylang-ylang, sage, spearmint, ginger, coriander, or coffee. Additionally, the humectant may include glycerin or propylene glycol. Furthermore, the medium may further include a vitamin component. For example, the vitamin component may include at least one of vitamin A, vitamin B, vitamin C, and vitamin E, but is not limited thereto.

[0083] According to one embodiment of the present invention, the filter portion is positioned downstream of the medium portion and may be an area through which aerosol substances generated in the medium portion pass immediately before being inhaled by a user. The filter portion may be formed of various materials, for example, the filter portion may be a cellulose acetate filter.

[0084] According to one embodiment of the present invention, the filter portion may be a cellulose acetate filter that has not been flavored with a fragrance material, but is not limited thereto, and the filter portion may be a TJNS (transfer jet nozzle system) filter that has been flavored with a fragrance material. The filter portion may also be a tube-shaped structure containing a hollow interior. Additionally, the filter portion may be manufactured by inserting a structure such as a film or tube of the same or different material into the interior (e.g., the hollow interior).

[0085] According to one embodiment of the present invention, the hardness of the filter portion can be adjusted by controlling the content of the plasticizer during the manufacture of the filter portion. Triacetin may be used as the plasticizer, but the type and content of the plasticizer are not limited thereto and can be appropriately adjusted as needed.

[0086] According to one embodiment of the present invention, the filter section is illustrated as a mono filter consisting of a single filter, but is not limited thereto. For example, it is obvious that the filter section may be provided as a dual filter or a triple filter equipped with two acetate filters to increase filter efficiency.

[0087] Furthermore, although not shown, a capsule (not shown) may be included inside the filter portion. The capsule may have a structure in which a liquid containing a flavoring is encased in a film, and for example, the capsule may have a spherical or cylindrical shape. The material forming the film of the capsule may be a natural material, starch, and / or a gelling agent. For example, in the case of a film made of a natural material, it may be composed of agar, pectin, sodium alginate, and glycerin, etc. Gellan gum or gelatin may be used as a gelling agent. Additionally, a gelling aid may be further used as a material forming the film of the capsule. For example, calcium chloride may be used as a gelling aid. Additionally, a plasticizer may be further used as a material forming the film of the capsule. Here, glycerin and / or sorbitol may be used as a plasticizer. Additionally, a coloring agent may be further used as a material forming the film of the capsule.

[0088] For example, medium chain fatty acid triglyceride (MCTG) may be used as a solvent for the flavoring included in the liquid contents of the capsule. In addition, the liquid contents may contain other additives such as colorants, emulsifiers, and thickeners. The liquid contents of the capsule may contain flavorings such as menthol and plant essential oils, but are not limited thereto.

[0089] According to one embodiment of the present invention, the filter portion is positioned downstream of the medium portion and serves as a filter through which an aerosol substance generated in the medium portion passes immediately before being inhaled by a user. The filter portion may be packaged by a filter roll.

[0090] Meanwhile, the medium may be wrapped by a medium wrapper. The medium wrapper may contain glycerin and a combustion promoter such as K-citrate and / or NA-citrate to promote the complete combustion of the smoking substance through catalytic action, and furthermore, may contain a filler such as calcium carbonate, titanium dioxide, or magnesium oxide.

[0091] According to one embodiment of the present invention, the medium wrapper may have a double wrapping structure. Specifically, the medium wrapper may include an inner wrapper that contacts the medium and wraps the medium, and an outer wrapper that contacts the inner wrapper and wraps the outside of the inner wrapper.

[0092] Furthermore, the medium wrapper may be a low ignition propensity (LIP) cigarette paper having one or more LIP bands (not shown) formed thereon. The LIP bands can reduce the porosity of the medium wrapper, and accordingly, when the combustion of the tobacco reaches the LIP bands, the amount of oxygen flowing into the medium is reduced, so that the aerosol-generating material being burned can be extinguished. Here, the LIP bands may be a coating layer formed on the inner surface of the medium wrapper. The filter portion packaged by the filter roll and the medium portion packaged by the medium wrapper may be combined and packaged by tip paper. That is, the tip paper may be wrapped around at least a portion of the medium wrapper (e.g., a downstream portion) and the outer edge of the filter roll. Meanwhile, the tip paper may contain a non-combustible material to prevent the filter portion from burning along with the combustion of the medium portion.

[0093]

[0094] FIG. 2 is a schematic cross-sectional view of an aerosol generating article according to one embodiment of the present invention.

[0095] Referring to FIG. 2, the aerosol generating article (100) may include a medium part (120) including an aerosol base part (121) and a smoking substance part (122), a cooling part (130), and a filter part (110).

[0096] According to one embodiment of the present invention, the medium portion may include the aerosol substrate portion. The aerosol substrate portion may include a liquid aerosol generating substrate that forms an aerosol. The liquid aerosol generating substrate may include a liquid composition based on nicotine, tobacco extract, and / or various flavoring agents, and may include at least one of propylene glycol (PG) and glycerin (GLY), and may further include at least one of ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. Additionally, the aerosol generating substrate may include at least one of nicotine, water, and a flavoring substance. Additionally, the aerosol generating substrate may further include various additive substances such as cinnamon and capsaicin. The aerosol generating substrate may include not only a liquid substance with high fluidity but also a substance in the form of a gel or a solid. As such, the compositional components of the aerosol generating substrate may be selected in various ways depending on the embodiment, and the compositional ratio may also vary depending on the embodiment.

[0097] According to one embodiment of the present invention, the medium may include the smoking material portion. The smoking material portion comprises a solid aerosol generating material and may include a solid material based on tobacco raw materials such as sheet tobacco, cut tobacco, or reconstituted tobacco. If the medium does not include the aerosol substrate portion, the smoking material portion may further include a liquid aerosol generating substrate.

[0098]

[0099] Hereinafter, the present invention will be described in detail with reference to examples to specifically explain the invention. However, the embodiments according to the present invention may be modified in various different forms, and the scope of the present invention is not to be interpreted as being limited to the embodiments described below. The embodiments of this specification are provided to more completely explain the present invention to those with average knowledge in the art.

[0100]

[0101] Examples

[0102] ingredient

[0103] Microcrystalline cellulose (MCC) powder with a size of approximately 150 μm was prepared as a cellulose-based material. Sorbitol (melting point 96 °C), xylitol (melting point 94 °C), and maltitol (melting point 150 °C), which are sugar alcohol-based compounds, were prepared as endothermic agents. Hydroxypropylcellulose (HPC) was prepared as a binder.

[0104] A compound represented by the following chemical formula 1 was prepared as a flow improver, wherein R1 and R2 in chemical formula 1 are tetradecyl groups (-C 14 H 29 )am.

[0105] [Chemical Formula 1]

[0106]

[0107] Example 1

[0108] Manufacturing of cooling sheets

[0109] A composition for forming a cooling sheet was prepared by adding cellulose acetate, sorbitol, guar gum, and a flow improver represented by Chemical Formula 1 to water, which is a solvent, and mixing them.

[0110] At this time, based on 100 parts by weight of solids containing a cellulose-based material, a binder, a heat-absorbing agent, and a flow improver, the content of the cellulose-based material was 55 parts by weight, the content of the binder was 5 parts by weight, the content of the heat-absorbing agent was 37 parts by weight, and the content of the flow improver was 3 parts by weight.

[0111] Subsequently, the composition for forming the cooling sheet was dried at a temperature of approximately 40°C to produce a cooling sheet. At this time, the thickness of the produced cooling sheet was 200 μm.

[0112]

[0113] Manufacturing of aerosol-generating products

[0114] An aerosol generating article was manufactured having an aerosol base section, a smoking substance section, a cooling section, and a filter section, as shown in FIG. 2. The diameter of the aerosol generating article was 7.2 mm, the length of the aerosol base section was 10 mm, the length of the smoking substance section was 12 mm, the length of the cooling section was 12 mm, and the length of the filter section was 14 mm.

[0115] At this time, the cooling sheet manufactured above was clamped to form a cooling section, and the weight of the cooling sheet used to form the cooling section was approximately 250 mg. That is, the mass per unit volume of the cooling sheet contained in the cooling section was approximately 0.5 mg / mm² 3 It was.

[0116]

[0117] Examples 2 to 3

[0118] In the above Example 1, a cooling sheet and an aerosol generating article were manufactured in the same manner as in Example 1, except that the content of the cellulose-based material, binder, heat-absorbing agent, and flow improver was adjusted as shown in Table 1 below.

[0119] Example 1 Example 2 Example 3 (1) Cellulose-based material content 555551 (2) Binder content 555 (3) Type of endothermic agent Sorbitol Sorbitol Sorbitol content 373820 Type--Xylitol content--20 (4) Flow improver content 324 (3) / (4) Weight ratio 12.31910

[0120]

[0121] In Table 1, the content (parts by weight) of the cellulose-based material, binder, heat-absorbing agent, and flow improver is based on 100 parts by weight of the solid content (cellulose-based material, binder, heat-absorbing agent, and flow improver).

[0122]

[0123] Comparative Examples 1 to 4

[0124] In the above Example 1, a cooling sheet and an aerosol generating article were manufactured in the same manner as in Example 1, except that the content of the cellulose-based material, binder, heat-absorbing agent, and flow improver was adjusted as shown in Table 2 below.

[0125] Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 (1) Cellulose-based material content 55555555 (2) Binder content 5555 (3) Type of endothermic agent Sorbitol Sorbitol Sorbitol Maltitol content 4039.52537 (4) Flow improver content -0.5153 (3) / (4) Weight ratio -791.712.3

[0126]

[0127] In Table 2, the content (parts by weight) of the cellulose-based material, binder, heat-absorbing agent, and flow improver is based on 100 parts by weight of the solid content (cellulose-based material, binder, heat-absorbing agent, and flow improver).

[0128]

[0129] Experimental Example

[0130] Confirmation of cooling effect

[0131] In order to confirm the cooling effect of the aerosol generating product prepared in the above examples and comparative examples, the temperature of the aerosol when puffing the aerosol generating product was measured and is shown in Tables 3 to 6 below.

[0132] Filter Section Shear Temperature (°C) Example 1 Example 2 Example 31 Puff 76.8 76.5 75.92 Puff 72.5 72.2 70.63 Puff 65.1 64.7 63.14 Puff 63.2 62.5 60.95 Puff 61.4 61.2 58.76 Puff 59.2 58.7 56.47 Puff 56.7 56.4 55.28 Puff 55.3 54.9 54.39 Puff 54.9 54.2 53.61~2 Average 74.6 574.3 573.2 53~9 Average 59.4 58.9 457.46 Average 62.7 962.3 760.97

[0133]

[0134] Filter Section Shear Temperature (°C) Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 1 Puff 76.1 76.2 78.9 79.42 Puff 71 71.9 74.7 75.63 Puff 63.4 64.5 69 69.44 Puff 60.6 62.2 65.7 66.15 Puff 58.2 61 63.2 63.56 Puff 56.7 58.5 61.5 61.97 Puff 55 56.1 57.7 58.18 Puff 54.4 54.7 56.8 57.29 Puff 53.7 54.5 55.9 56.11~2 Average 73.5 574.0 576.8 77.53~9 Average 57.43 58.71 61.46 1.76 Average 61.01 62.12 64.82 65.26

[0135]

[0136] Temperature at the rear of the filter section (°C) Example 1 Example 2 Example 31 Puff 57.156.155.82 Puff 52.452.250.43 Puff 45.744.543.44 Puff 43.742.641.15 Puff 41.240.938.56 Puff 39.438.636.77 Puff 36.235.934.98 Puff 34.934.734.39 Puff 34.734.33.71~2 Average 54.7554.1553.13~9 Average 39.438.7937.51 Average 42.8142.240.98

[0137]

[0138] Temperature at the rear of the filter section (°C) Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 41 Puff 56 56.4 59.2 59.72 Puff 51.2 51.7 54.8 55.13 Puff 43.6 44.3 48.7 49.34 Puff 40.7 41.9 46.1 46.45 Puff 38.4 40.7 43.7 43.96 Puff 36.9 37.9 42.1 42.37 Puff 35.1 35.8 38.3 38.48 Puff 34.4 34.7 36.7 36.99 Puff 33.6 34.1 35.9 36.21~2 Average 53.6 54.0 557 57.43~9 Average 37.5338.4941.6441.91 Average 41.141.9445.0645.36

[0139]

[0140] Referring to Tables 3 to 6 above, it was confirmed that the temperature of the aerosol generating article using the cooling sheet manufactured in Examples 1 to 3 of the present invention decreased, and in particular, a significant decrease in temperature was confirmed as smoking progressed.

[0141]

[0142] Postponement Implementation Analysis

[0143] The smoke components of the aerosol generating products prepared in the above examples and comparative examples were measured, and the results are shown in Table 7 below.

[0144] Unit A M N C P G L N Water Example 1 mg / stick 4 2.1 0.9 1 4.1 4 8.4 6 2 6.1 Example 2 mg / stick 4 2.7 0.9 4 4.2 1 8.5 7 2 6.6 Example 3 mg / stick 4 3.5 0.9 6 4.2 2 8.6 1 2 7 Comparative Example 1 mg / stick 4 0.2 0.7 8 3.9 7 8.2 1 2 3.8 Comparative Example 2 mg / stick 4 0.7 0.8 2 4.0 2 8.2 9 2 4.5 Comparative Example 3 mg / stick 4 1.2 0.8 6 4.0 4 8.3 5 2 5.2 Comparative Example 4 mg / stick 4 0.5 0.8 2 3.9 7 8.2 8 2 4.9

[0145] * ACM (Aerosol Collected Mass)

[0146] Referring to Table 7 above, it was found that in the case of an aerosol generating article using the cooling sheets prepared in Examples 1 to 3 of the present invention, as the temperature of the aerosol decreased, the filtered smoke components were reduced, and accordingly, the amount of smoke transfer increased. In particular, it was confirmed that even at similar aerosol temperatures, the cooling sheets prepared in Examples 1 to 3 of the present invention showed an increased amount of smoke transfer compared to Comparative Examples 1 to 4.

[0147] Meanwhile, in the case of Comparative Example 1, since no flow improver was included, it was confirmed that although the temperature of the aerosol was reduced, smoke transfer was not smooth. In addition, in the case of Comparative Examples 2 and 3, since the content of the flow improver fell outside the aforementioned range, it was confirmed that smoke transfer was inferior compared to Examples 1 to 3. Furthermore, in the case of Comparative Example 4, since a sugar alcohol-based compound with a high melting point was used as an endothermic agent, it was confirmed that smoke transfer was not smooth.

[0148]

[0149] Sensory evaluation

[0150] For the aerosol generating products prepared in the above examples and comparative examples, a sensory evaluation was conducted on the heat sensation upon puffing, vapor production, and tobacco flavor, and the results are shown in Table 6. The sensory evaluation was conducted using aerosol generating products that were 2 weeks old after preparation, with 25 evaluation panel members, based on a total maximum score of 10 points, and the average values ​​are listed in Table 8 below.

[0151]

[0152] Puff Heat Sensation Vapor Production Tobacco Flavor Example 19.4 9.5 9.6 Example 29.6 9.7 9.7 Example 39.99.99.8 Comparative Example 19.98.28.8 Comparative Example 29.78.68.7 Comparative Example 38.79.68.8 Comparative Example 48.99.38.8

[0153]

[0154] Referring to Table 8 above, in the case of the aerosol generating article using the cooling sheet prepared in Examples 1 to 3 of the present invention, compared to Comparative Examples 1 to 4, it showed significantly superior sensory evaluation results in terms of vapor production and tobacco flavor, and it was confirmed that it was also excellent in terms of puff heat sensation.

[0155] [Explanation of the symbol]

[0156] 100: Aerosol generating items

[0157] 110: Filter section 110a: Filter winding

[0158] 120: Whipping Unit 120a: Whipping Unit Rapper

[0159] 121: Aerosol Planning Department 122: Smoking Substances Department

[0160] 130: Cooling section 140: Tip paper

Claims

1. Cellulose-based material; An endothermic agent comprising a sugar alcohol-based compound having a melting point of 100 ℃ or lower; and A cooling sheet composition for an aerosol generating article comprising a flow improver comprising a double-bond containing cycloether-based compound.

2. In Paragraph 1, A cooling sheet composition for an aerosol generating article, wherein the above-mentioned cellulose-based material comprises a cellulose-based powder having a size of 10 μm or more and 500 μm or less.

3. In Paragraph 1, A cooling sheet composition for an aerosol generating article, wherein, based on 100 parts by weight of solid content included in the cooling sheet composition, the content of the cellulose-based material is 40 parts by weight or more and 70 parts by weight or less.

4. In Paragraph 1, A cooling sheet composition for an aerosol generating article, wherein the above-mentioned heat-absorbing agent comprises at least one of sorbitol and xylitol.

5. In Paragraph 1, A cooling sheet composition for an aerosol generating article, wherein, based on 100 parts by weight of solid content included in the cooling sheet composition, the content of the heat-absorbing agent is 20 parts by weight or more and 50 parts by weight or less.

6. In Paragraph 1, A cooling sheet composition for an aerosol generating article in which the above-mentioned flow improver comprises a compound represented by the following chemical formula 1: [Chemical Formula 1] In the above chemical formula 1, R1 and R2 are each independently straight-chain or branched-chain alkyl groups having 10 to 20 carbon atoms.

7. In Paragraph 1, A cooling sheet composition for an aerosol generating article, wherein, based on 100 parts by weight of solid content included in the cooling sheet composition, the content of the flow improver is 1 part by weight or more and 5 parts by weight or less.

8. In Paragraph 1, A cooling sheet composition for an aerosol generating article, wherein the weight ratio of the above flow improver to the above heat endotherm is 1:5 to 1:

25.

9. In Paragraph 1, Includes additional binders, A cooling sheet composition for an aerosol generating article, wherein, based on 100 parts by weight of solid content included in the cooling sheet composition, the content of the binder is 1 part by weight or more and 10 parts by weight or less.

10. A cooling sheet comprising a cooling sheet composition for an aerosol generating article according to paragraph 1.

11. In Paragraph 10, A cooling sheet having a thickness of 50 μm or more and 500 μm or less.

12. Medium part; Filter section; and An aerosol generating article comprising: a cooling portion provided between the medium portion and the filter portion; wherein the cooling portion comprises a cooling sheet according to claim 10.

13. In Paragraph 12, The above cooling sheet is an aerosol generating article that is clamped and provided in the cooling section.

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