A smoking article comprising lyocell tow

Abstract

A smoking article comprising a lyocell tow comprising a plurality of lyocell fibers is provided. The smoking article comprises: a medium section; a cooling structure disposed apart from one side of the medium section; and a support structure disposed between the medium section and the cooling structure, the cooling structure comprising a lyocell tow comprising a plurality of lyocell fibers.

Description

Technical Field

[0001] This invention relates to a smoking article in which lyocell tow is applied to the cooling structure of the smoking article to prevent the cooling structure from melting due to the high temperature applied to heat the smoking article, thereby providing the user with an improved smoking experience. Background Technology

[0002] In smoking products, the migration of tobacco components (e.g., nicotine, tar) and the generation of vapor (mist) significantly impact the user's smoking experience. Typically, smoking products operate as follows: a device heats the cigarette to a high temperature of approximately 150°C to 300°C, and this heat is transferred to a medium. As the temperature of the medium rises, tobacco components such as nicotine migrate smoothly. During this process, substances such as glycerin are heated and vaporized, allowing the tobacco components contained within the vapor to be inhaled by the user. However, if the device's set temperature is below or equal to the boiling point of glycerin, vaporization is difficult to occur, thus limiting the migration of tobacco components.

[0003] To address this issue, the following method has been used in the past: incorporating a cooling section into smoking products to reduce discomfort experienced by users due to hot smoke during inhalation.

[0004] Traditional cooling sections use perforations in the paper tube to introduce cool air from the outside, thereby lowering the temperature of the smoke. However, this existing technology has some limitations. For example, the process of introducing air through perforations in the cooling section design can lead to excessive dilution of the tobacco components. This reduces the concentration of tar and nicotine delivered, preventing the user from obtaining the desired flavor and smoking experience.

[0005] In addition, when cellulose acetate (CA) tow is used in the cooling section in the past, the CA tow will melt or deform and re-solidify at temperatures above about 70°C. This phenomenon may hinder the smooth migration of smoke, produce unpleasant odors, and cause problems in effectively performing the cooling function.

[0006] Therefore, to improve the performance of smoking products, materials capable of withstanding heating temperatures of approximately 200°C to 300°C are needed to facilitate the atomization and migration of tobacco components. This material needs to not melt or deform at high temperatures, while effectively cooling or reducing the temperature of the smoke to improve the user's smoking experience. Furthermore, a material is required that minimizes the dilution of tobacco components during cooling, ensuring sufficient delivery of tar and nicotine upon inhalation. Summary of the Invention

[0007] Technical issues The present invention aims to provide a smoking article comprising a medium portion, a support structure, a cooling structure, and a mouthpiece portion, wherein the cooling structure is composed of a lyocell bundle comprising a plurality of lyocell fibers, thereby preventing or minimizing deformation of the cooling structure caused by heat transferred from the heater of the smoking article or aerosol generated within the smoking article due to the excellent heat resistance of the lyocell bundle.

[0008] Another problem to be solved by the present invention is to provide a smoking article, which includes a medium part, a support structure, a cooling structure and a mouthpiece part, wherein the cooling structure is composed of a lyocell filament bundle including a plurality of lyocell fibers, thereby utilizing the excellent hydrophilicity of the lyocell filament bundle to effectively reduce the amount of water transferred during smoking, thereby reducing the heat felt by the user and maximizing the cooling effect.

[0009] Another problem to be solved by the present invention is to provide a smoking article comprising a medium part, a support structure, a cooling structure and a mouthpiece part, wherein the cooling structure comprises a lyocell bundle composed of a plurality of lyocell fibers and an adhesive, wherein the adhesive imparts appropriate stiffness to the lyocell bundle, so that the smoking article can stably maintain its shape even though the cooling structure is a tubular structure composed of lyocell bundles.

[0010] The technical problem of this invention is not limited to the technical problem described above. Through the following description, those skilled in the art can clearly understand other technical problems not mentioned.

[0011] Solution to the problem To solve the aforementioned technical problem, a smoking article according to one aspect of this application includes: a medium portion; a cooling structure arranged spaced apart from one side of the medium portion; and a support structure arranged between the medium portion and the cooling structure, the cooling structure comprising a tow of lyocell fibers.

[0012] In some embodiments, the lyocell bundle of the cooling structure may have a hollow tubular structure formed inside.

[0013] In some embodiments, the cooling structure may further include at least one adhesive dispersed in the lyocell filament bundle.

[0014] In some embodiments, the adhesive may include at least one of cellulose adhesives, vinyl adhesives, polyester adhesives, dextrin adhesives, and starch adhesives.

[0015] In some embodiments, the adhesive may include at least one dextrin-based adhesive.

[0016] In some embodiments, the inner diameter of the cooling structure can be 10% to 90% of the outer diameter of the cooling structure.

[0017] In some embodiments, the outer diameter of the cooling structure can be 6 mm to 10 mm.

[0018] In some embodiments, the inner diameter of the cooling structure can be 2 mm to 6 mm, and the inner diameter of the cooling structure is smaller than the outer diameter.

[0019] In some embodiments, the outer diameter of the cooling structure can be 6 mm to 10 mm, and the inner diameter of the cooling structure can be 2 mm to 6 mm. The inner diameter of the cooling structure is smaller than the outer diameter.

[0020] In some embodiments, the inner diameter of the cooling structure can be 10% to 90% of the outer diameter of the cooling structure, the outer diameter of the cooling structure can be 6 mm to 10 mm, and the inner diameter of the cooling structure can be 2 mm to 6 mm.

[0021] In some embodiments, one end of the support structure located on one side may be connected to the cooling structure.

[0022] In some embodiments, the other end of the support structure located on the opposite side of the first side may be connected to the medium portion.

[0023] In some embodiments, the cooling structure may have a hollow tube formed inside.

[0024] In some embodiments, the cooling structure has a hollow tube inside, and the hollow part of the cooling structure can be connected to the hollow part of the supporting structure.

[0025] In some embodiments, in the support structure, one end of the support structure located on one side may be connected to the cooling structure, and the other end of the support structure located on the opposite side of the one side may be connected to the medium portion. The support structure may have a hollow tube formed inside, and the hollow part of the cooling structure may be connected to the hollow part of the support structure.

[0026] In some embodiments, the support structure may include at least one of cellulose acetate, the lyocell, or the paper tube.

[0027] In some embodiments, a mouthpiece may also be included disposed on one side of the cooling structure.

[0028] In some embodiments, the cooling structure may also include packaging paper covering at least a portion thereof, and optionally, the packaging paper may include a plurality of perforations arranged circumferentially along the cooling structure.

[0029] In some embodiments, the length of the support structure may be less than or equal to the length of the cooling structure.

[0030] In another aspect of this application, a system is provided that includes the smoking article and an aerosol generating apparatus for applying the smoking article.

[0031] In another aspect of this application, a method for preparing the smoking article is provided.

[0032] The effects of the invention According to one embodiment of the smoking article, by making the cooling structure composed of a lyocell bundle comprising a plurality of lyocell fibers, the excellent heat resistance of the lyocell bundle can effectively prevent or minimize deformation of the cooling structure caused by heat transferred from the heater of the smoking article or aerosol generated within the smoking article.

[0033] Furthermore, according to one embodiment of the smoking product, by making the cooling structure composed of a tow of lyocell fibers, the superior hydrophilicity of the lyocell tow compared to cellulose acetate tow effectively reduces the amount of water transferred during smoking, thereby reducing the heat felt by the user and maximizing the cooling effect.

[0034] Furthermore, according to one embodiment of the smoking article, by preparing a cooling structure comprising a lyocell bundle composed of multiple lyocell fibers and an adhesive, the adhesive can impart appropriate stiffness to the lyocell bundle. Thus, although the cooling structure is a tubular structure composed of lyocell bundles, the smoking article can stably maintain its shape, and due to the stable shape retention of the cooling structure, deformation of the cooling structure during storage or smoking can be prevented or minimized, thereby reducing the quality of the smoking experience.

[0035] Furthermore, according to one embodiment of the smoking product, by using Lyocell filament bundles to construct the cooling structure instead of paper that may produce an odor when heated, the quality of the user's smoking experience can be improved.

[0036] The effects of the technical concept of this disclosure are not limited to those described above. Other effects not mentioned will be clearly understood by those skilled in the art from the following description. Attached Figure Description

[0037] Figure 1 The diagram illustrates a smoking article according to an embodiment of the present invention.

[0038] Figure 2 A diagram illustrating a smoking article according to another embodiment of the present invention is provided for illustrative purposes.

[0039] Figure 3To take photographs of the cooling structure of Example 1 and the cooling structure of Comparative Example 2, wherein, Figure 3 Part (a) is a photograph of the cooling structures of Comparative Example 1 and Example 1 before the experiment (before smoking). Figure 3 Part (b) is a photograph of the cooling structures of Comparative Example 1 and Example 1 after the experiment (after smoking).

[0040] Figures 4 to 6 Examples of various types of aerosol generating apparatuses for smoking articles according to some embodiments of the present disclosure are provided. Detailed Implementation

[0041] The preferred embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. The advantages and features of this disclosure, as well as the methods for implementing them, will become apparent from the accompanying drawings and the embodiments described in detail below. However, the technical concept of this disclosure is not limited to the embodiments described below, and can be implemented in various different forms. The following embodiments are only intended to ensure that this disclosure is fully disclosed so that those skilled in the art to which this disclosure pertains can fully understand the scope of this disclosure. The technical concept of this disclosure is defined by the scope of the claims of this disclosure.

[0042] When adding reference numerals to components in all the accompanying drawings, it should be noted that the same reference numerals refer to the same components, even if they are shown in different drawings. Furthermore, in the process of describing this disclosure, detailed descriptions of the relevant prior art components or functions may be omitted if it is believed that such detailed descriptions would obscure the gist of this disclosure.

[0043] Unless otherwise specified, all terms (including technical and scientific terms) used in this specification are to be used in a manner that is commonly understood by one of ordinary skill in the art to which this disclosure pertains. Furthermore, commonly used terms that are defined in dictionaries are not to be ideally or over-interpreted without explicit specific definitions. The terminology used in this specification is for illustrative purposes only and is not intended to limit the scope of this disclosure. In the following embodiments, unless otherwise specified, singular nouns also include plural forms.

[0044] Furthermore, in describing the components of this disclosure, terms such as first, second, A, B, (a), (b) may be used. These terms are used only to distinguish a component from other components, and the nature, order, or sequence of the related components is not limited by these terms. It should be understood that if a component is described as "connected," "combined," or "linked" to another component, it may mean that the component is not only directly "connected," "combined," or "linked" to another component, but also indirectly "connected," "combined," or "linked" via a third component.

[0045] The terms “comprising” and / or “including” as used in this disclosure specify the presence of the described components, steps, operations and / or elements, but do not exclude the presence or addition of one or more other components, steps, operations and / or elements.

[0046] First, some terms used in this specification will be explained.

[0047] In this specification, "smoking article" can refer to any smokeable article or any article that provides a smoking experience, regardless of whether it is based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, or tobacco substitutes. For example, smoking articles can include smokeable articles such as cigarettes, cigars, and cigarillos.

[0048] In this specification, "smoking material" can refer to any type of substance that can be used in smoking products.

[0049] In this specification, the term "user" may be used interchangeably with "consumer".

[0050] In this specification, "upstream" or "upstream direction" can refer to the direction away from the smoker's mouth, while "downstream" or "downstream direction" can refer to the direction closer to the smoker's mouth.

[0051] In this specification, "longitudinal direction" may refer to the direction corresponding to the longitudinal axis of the smoking product.

[0052] The “length axis” of a smoking product can refer to an imaginary line extending along the main longitudinal direction of the smoking product. This axis typically extends from one end of the smoking product (e.g., the end of the mouthpiece or filter) to the other end (e.g., the combustion end or heat source end).

[0053] In this specification, the term "Lycell filter" refers to a filter containing or composed of Lycell filaments.

[0054] In this specification, "lyocell bundle" includes or is composed of multiple lyocell fibers. In some embodiments, a lyocell bundle refers to a bundle formed by cross-connecting adjacent lyocell fibers.

[0055] In this specification, "lyocell fiber" may refer to a fiber made from lyocell cellulose. In particular, lyocell fiber may be a fiber made from cellulose derived or primarily derived from wood pulp, especially a semi-synthetic fiber.

[0056] In this specification, "reconstituted tobacco leaves" may refer to reconstituted tobacco leaves.

[0057] In this specification, "reconstituted tobacco leaf" or "reconstituted tobacco sheet" can refer to a sheet-like material made by combining tobacco by-products selected from the group consisting of tobacco stems, dust, fine particles, and combinations thereof with an adhesive. In some embodiments, reconstituted tobacco leaf is homogenized tobacco leaf.

[0058] In this specification, "irregular cross section" is defined as a shape whose cross section is not circular but includes multiple protrusions. For example, a cross section having multiple protrusions branching from and / or extending from the center of its cross section can be called an irregular cross section. Here, "protrusion" may refer to a distinct and extended segment or arm extending outward from the central core or joint of the Lyocell fiber cross section.

[0059] In some embodiments, lyocell fibers may have a Y-shaped cross section including three protrusions branching from and / or extending from the center of the cross section and / or a cross-shaped cross section including four protrusions and / or a star-shaped cross section including five or more protrusions, or an O-shaped cross section, but are not limited thereto.

[0060] In some embodiments, the lyocell fiber may include three or more protrusions that branch from the center and / or the center of the cross section and / or extend therefrom.

[0061] In some embodiments, for use in cigarette filters, the lyocell fibers contained in the lyocell tow may have a Y-shaped cross-section.

[0062] In this specification, "hollow" can refer to a channel that extends along the length direction.

[0063] In this specification, "consisting of an element..." can mean that the element is included or constitutes the element.

[0064] In this specification, the term "recess filter" as used for a filter tip can refer to a filter tip that includes one or more pores.

[0065] In this specification, "packaging" of a smoking article by wrapping paper may refer to the wrapping paper covering at least a portion of the periphery of the parts and / or structure of the smoking article along its longitudinal axis.

[0066] In this specification, the hardness of the cooling structure is a numerical value representing the degree to which the diameter of the cooling structure is maintained when a horizontal force is applied to the cooling structure in a direction perpendicular to its length. It can be a percentage of the diameter of the cooling structure after the force is applied, relative to the diameter before the force is applied. For example, the hardness (%) of the cooling structure can be calculated using the following formula: (Da) / D × 100%, where D is the diameter of the cooling structure and a is the distance the structure descends (i.e., the cooling structure is compressed) under the action of a 300g weight. Measurements required to calculate the hardness can be obtained using, for example, Filtrona's DHT 200. TM The equipment is obtained. When measuring hardness, the force applied to the cooling structure can be set to the equivalent force applied by a user when actually holding the smoking product.

[0067] According to one aspect of the invention, the filter of a smoking article can capture at least a portion of the smoke components generated during smoking using the smoking article. In some embodiments, the filter of the smoking article can capture at least a portion of particulate matter (total particulate matter, hereinafter referred to as "TPM") comprising at least one of nicotine (hereinafter "Nic"), tar (Tar), propylene glycol (hereinafter "PG"), and glycerin (hereinafter "Gly") contained in the smoke components generated when smoking using the smoking article.

[0068] In this specification, "suction resistance" refers to the static pressure difference between the two ends of the sample when airflow passes through it. In this specification, "PDC" refers to the suction resistance value measured with the media section open, the filter nozzle perforation closed, and external air prevented from entering, while "PDO" refers to the suction resistance value measured with the media section open, the filter nozzle perforation not closed, and external air allowed to enter. For example, suction resistance can be measured using the method specified in ISO standard 6565:2015. According to ISO standard 6565:2015, suction resistance is the static pressure difference between the two ends of the sample measured under normal conditions (22±2℃, relative humidity 60±5%) when airflow exits from the outlet end at a volumetric flow rate of 17.5 mm / s.

[0069] In this specification, organic acid refers to the general term for organic compounds that are acidic.

[0070] In some embodiments, room temperature may refer to 20°C to 25°C.

[0071] In this specification, unless a separate physical quantity is expressed, the percentage of a component and the proportion of a component represent the weight percentage and the weight proportion of the component, respectively.

[0072] In this specification, "puff" can refer to the act of inhaling or introducing air through a smoking product used to generate and inhale smoke or vapor. "Number of puffs" can refer to the total number of inhalation or introduction actions during the use of the smoking product. Alternatively or additionally, the number of puffs can represent the maximum number of inhalation or introduction actions that the smoking product can provide before it is fully consumed or its function is discontinued.

[0073] In this specification, the HC (Health Canada) conditions can be defined as follows: a puff volume of 55 mL per aspiration, a puff frequency of once every 30 seconds, and a puff duration of 2 seconds. Specifically, the HC conditions can be measured with the perforated portion of the filter tip sealed. When measuring under HC conditions, the number of puffs can be up to 9.

[0074] In this specification, the "ventilation rate" (hereinafter referred to as "Vent") of a smoking product can be defined as the percentage ratio between the total volumetric airflow (e.g., ml / s) entering the unburned or unheated smoking product without passing through the front end region (i.e., the upstream end in the length direction) and the total volumetric airflow (e.g., ml / s) exiting the smoking product (i.e., the downstream end in the length direction). For example, the air dilution rate can be measured according to ISO 9512:2019. For example, the total volumetric airflow entering the unburned or unheated smoking product without passing through the front end region can be the total volumetric airflow entering along a direction perpendicular to the length of the smoking product. For example, the total volumetric airflow entering the unburned or unheated smoking product without passing through the front end region can be the total volumetric airflow entering the smoking product through the cigarette paper.

[0075] The content of total particulate matter (TPM) components in the captured smoke can be analyzed by gas chromatography-mass spectrometry (GC / MS). For example, for tar or nicotine, Cambridge filter pads (CFPs) used to capture the smoke components can be soaked in isopropyl alcohol (IPA) for a period of time (e.g., 20 minutes to 16 hours), while for PG (propylene glycol) and Gly (glycerol), Cambridge filter pads (CFPs) used to capture the smoke components can be soaked in methanol for a period of time (e.g., 2 hours to 16 hours). After processing with a shaking device and removing impurities through a polytetrafluoroethylene (PTFE) syringe filter, the content of total particulate matter (TPM) components in the captured smoke can be measured using a GC / MS device. In particular, the soaking time can be more than 20 minutes for tar or nicotine, and more than 2 hours for PG and Gly.

[0076] The GC / MS device may be, for example, a measurement device from Agilent Technologies.

[0077] In the following, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0078] Figure 1 The diagram is provided for illustrative purposes only and represents an embodiment of a smoking article according to the present invention. Figure 2 A diagram illustrating a smoking article according to another embodiment of the present invention is provided for illustrative purposes.

[0079] Reference Figure 1The smoking article 100 may include a medium portion 110, a support structure 120, and a cooling structure 130. According to one embodiment, the smoking article 100 may further include at least one of a mouthpiece portion 140 and a wrapping paper 150. Specifically, the smoking article 100 may include a medium portion 110, a cooling structure 130 arranged spaced apart from the medium portion 110 on one side of the medium portion 110, and a support structure 120 arranged between the medium portion 110 and the cooling structure 130. The cooling structure 130 may be arranged spaced apart from one end of the medium portion 110 along its length. Furthermore, the smoking article 100 may further include a mouthpiece portion 140 arranged in the opposite direction to the support structure 120, with reference to the cooling structure 130. That is, the smoking article 100 may have the medium portion 110, support structure 120, cooling structure 130, and optionally a mouthpiece portion 140 arranged sequentially along its length. In addition, the smoking article 100 may further include a wrapping paper 150 covering at least a portion of the covering medium portion 110, the support structure 120, the cooling structure 130, and the mouthpiece portion 140.

[0080] The medium section 110 may include an aerosol forming matrix. The medium section 110 may include an aerosol forming matrix, thereby generating an aerosol by heating. The length of the medium section 110 may be approximately 10 mm to 14 mm (e.g., 12 mm), but is not limited thereto. The medium section 110 can generate an aerosol by being inserted into an aerosol generating device and heated, and the generated aerosol (e.g., mainstream smoke) can be inhaled through the user's mouth.

[0081] In some embodiments, the aerosol forming matrix may include tobacco material, but the processing form of the tobacco material may vary. For example, the aerosol forming matrix may include reconstituted tobacco sheets, such as reconstituted tobacco sheets. In some embodiments, the aerosol forming matrix may include reconstituted tobacco sheets. In some embodiments, the aerosol forming matrix may also include a plurality of tobacco shreds (or pipe tobacco shreds) finely chopped from reconstituted tobacco sheets. For example, the medium portion 110 may be filled with a plurality of tobacco shreds arranged in the same direction (e.g., parallel) and / or randomly arranged. In some embodiments, the aerosol forming matrix may include tobacco leaf shreds.

[0082] In some embodiments, the aerosol forming matrix may include reconstituted tobacco leaves and / or shredded tobacco leaves.

[0083] In some embodiments, the aerosol forming matrix or medium 110 may include at least one humectant. The humectant may include glycerin and / or propylene glycol, etc. However, the invention is not limited thereto.

[0084] In some embodiments, the aerosol forming matrix or medium 110 may contain other additives such as at least one flavoring agent (or what may be referred to as a "flavoring substance") and / or organic acids. For example, the flavoring agent may include licorice, sucrose, fructose syrup, artificial sweeteners (e.g., Isosweet). TM Ingredients include: cocoa, lavender, cinnamon, cardamom, celery, fenugreek, cascara, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon oil, orange oil, peppermint oil, caraway, cognac, jasmine, chamomile, menthol, ylang-ylang, sage, spearmint, ginger, coriander, and / or coffee, etc. However, the invention is not limited thereto.

[0085] The support structure 120 may be located downstream (on one side) of the medium section 110, and the upstream of the support structure 120 may be connected to the downstream of the medium section 110. The support structure 120 may serve as a support member for the medium section 110. For example, when the heating element of the aerosol generating device is inserted into the medium section 110 and / or aligned outside the medium section 110, the support structure 120 may prevent the medium section 110 from moving downstream. The support structure 120 may also serve as a channel for aerosols (e.g., mainstream flue gas) formed in the medium section 110.

[0086] In some embodiments, the support structure 120 may include a tubular structure with a hollow core 120H formed inside, and the hollow core 120H may serve as a channel for aerosol movement. The hollow core 120H may extend along the length of the support structure 120. The hollow core 120H is located at the center of a cross-section perpendicular to the length of the support structure 120 and may extend along the length of the support structure 120. The hollow core 120H and the support structure 120 may be designed to have a coaxial structure. The length of the support structure 120 may be approximately 8 mm to 12 mm (e.g., 10 mm), but is not limited thereto. In some embodiments, the length of the support structure 120 may be less than or equal to the length of the cooling structure 130 described below, but is not limited thereto.

[0087] The upstream end of the tubular structure included in the support structure 120 can be connected to the downstream end of the tubular structure included in the cooling structure 130. In other words, one end located on one side (downstream) of the support structure 120 can be connected to the end located on the opposite side (upstream) of the cooling structure 130, and the other end located on the other side (upstream) of the support structure 120 can be connected to one end of the medium section 110. Therefore, the aerosol formed in the medium section 110 can move along the direction of the mouthpiece section 140 (i.e., downstream direction) through the hollow sections 120H and 130H.

[0088] The support structure 120 may include at least one of cellulose acetate, lyocell, and paper tube. In particular, the support structure 120 may include a tubular structure made of cellulose acetate material or a tubular structure made of lyocell material comprising multiple lyocell fibers. In other words, the support structure 120 may be a tubular filter tip made of cellulose acetate fibers or a tubular filter tip made of lyocell fibers. The support structure 120 can effectively prevent the media section 110 from moving downstream when the heating element is inserted, and can also provide the effect of filtering and cooling aerosols.

[0089] Preferably, the support structure 120 may comprise a tubular structure composed of lyocell bundles containing multiple lyocell fibers. However, the invention is not limited thereto, and the support structure 120 may comprise a tubular structure formed of cellulose acetate material. Because the support structure 120 is hollow and composed of lyocell bundles containing multiple lyocell fibers, the high heat resistance of the lyocell bundles, which do not melt even at high temperatures, prevents or minimizes deformation of the support structure 120 caused by heat applied to heat the smoking article 100 and / or by high-temperature aerosols passing through the hollow 120H of the support structure 120. Therefore, the support structure 120 can maintain its shape during smoking, ensuring that the smoke composition passing through the hollow 120H of the support structure 120 remains uniform and unchanged during the smoking time, thereby providing the user with a superior smoking experience.

[0090] On the other hand, preferably, the support structure 120 is manufactured to have appropriate hardness and / or durability in order to provide support. In some embodiments, when the support structure 120 comprises cellulose acetate, the hardness of the support structure 120 can be adjusted by regulating the amount of plasticizer added when preparing the support structure 120 using the cellulose acetate. Furthermore, the amount of plasticizer added can also be increased as the inner diameter of the support structure 120 increases (i.e., as the difference between the outer and inner diameters of the support structure 120 decreases). In some other embodiments, the support structure 120 can be manufactured by inserting a membrane, tube, or the like made of the same or different materials inside (i.e., in the hollow 120H).

[0091] In some other embodiments, when the support structure 120 includes lyocell, the support structure 120 may be a lyocell filter tip with a hollow 120H formed internally and at least one binder added. Unlike cellulose acetate, lyocell does not contain plasticizers that harden lyocell fibers; therefore, by adding a binder, the support structure 120 can be appropriately given stiffness. That is, by including at least one binder in the support structure 120, excellent stiffness can be achieved even though it is a lyocell filter tip composed of lyocell filament bundles.

[0092] In some embodiments, the adhesive may include at least one of cellulose adhesives, vinyl adhesives, polyester adhesives, dextrin adhesives, starch adhesives, guar gum, xanthan gum, gum arabic, carrageenan, konjac, and agar, but is not limited thereto; any substance capable of binding multiple lyocell fibers and imparting appropriate stiffness may be used. For example, examples of cellulose adhesives may include hydroxypropyl methylcellulose (HPMC), ethyl cellulose (EC), methyl cellulose (MC), carboxymethyl cellulose (CMC), etc.; examples of vinyl adhesives may include polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), ethylene-vinyl acetate copolymer (EVAc), etc.; polyester adhesives may be polyesters comprising at least one of the group consisting of alkylene, arylalkylene, and heteroarylalkylene atoms having 5 to 12 carbon atoms; dextrin adhesives may include dextrin, etc.; starch adhesives may include starch (e.g., cassava, corn, wheat, potato, sweet potato, etc.), cationic starch, esterified starch, etc., but are not limited thereto.

[0093] In some embodiments, the adhesive may include at least one of the following: polyester, hydroxypropyl methylcellulose (HPMC), ethyl cellulose (EC), methyl cellulose (MC), carboxymethyl cellulose (CMC), polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), ethylene-vinyl acetate copolymer (EVAc), dextrin, tapioca starch, corn starch, wheat starch, potato starch, sweet potato starch, cationic starch, esterified starch, guar gum, xanthan gum, gum arabic, carrageenan, konjac, and agar.

[0094] In some embodiments, the support structure 120 can be a flavored filter tip with added flavoring substances such as menthol (i.e., flavored). In this case, the flavor expression of the smoking article 100 can be greatly enhanced.

[0095] The cooling structure 130 can be used as a cooling component for the high-temperature aerosol generated in the heating medium section 110. Specifically, the cooling structure 130 may include a tubular structure with a hollow core 130H formed inside, capable of cooling the aerosol passing through the hollow core 130H. Specifically, the aerosol formed in the medium section 110 can pass through the hollow core 120H of the support structure 120 and move to the hollow core 130H of the cooling structure 130, and move towards the mouthpiece section 140 (i.e., downstream). The hollow core 130H can extend along the length direction of the cooling structure 130. The hollow core 130H is located at the center of a cross-section perpendicular to the length direction of the cooling structure 130 and can extend along the length direction of the cooling structure 130. The hollow core 130H and the cooling structure 130 can be coaxial along the length direction. The hollow 120H of the support structure 120 and the hollow 130H of the cooling structure 130 are respectively located at the center of a cross-section perpendicular to the length direction of the support structure 120 and the cooling structure 130, and can extend along the length direction of the support structure 120 and the cooling structure 130. The hollow 120H of the support structure 120 and the hollow 130H of the cooling structure 130 can extend along the same axis in the length direction. However, the hollow 120H of the support structure 120 and the hollow 130H of the cooling structure 130 can have the same or different diameters on their respective cross-sections perpendicular to the axes.

[0096] As a result, users can inhale aerosols at an appropriate temperature, and the mainstream smoke can be smoothly atomized, increasing the amount of atomization.

[0097] In one embodiment, the cooling structure 130 may be composed of a tow of lyocell fibers comprising a plurality of lyocell fibers. In particular, the lyocell tow constituting the cooling structure 130 may have a tubular shape with a hollow 130H formed inside. The length of the cooling structure 130 may be from about 12 mm to 16 mm (e.g., 14 mm), but is not limited thereto.

[0098] The lyocell fiber included in the cooling structure 130 of the present invention is an environmentally friendly fiber made from cellulose extracted from wood pulp. The lyocell bundle can refer to a bundle formed by cross-linking adjacent lyocell fibers.

[0099] In some embodiments, the outer diameter of the cooling structure 130 can be about 6 mm to 10 mm, preferably 6.1 mm to 9 mm, more preferably 6.2 mm to 8 mm, even more preferably 6.3 mm to 7.8 mm, even more preferably 6.4 mm to 7.6 mm, even more preferably 6.6 mm to 7.4 mm, even more preferably 6.8 mm to 7.2 mm, and even more preferably 7 mm. The inner diameter of the cooling structure 130 (i.e., the diameter of the hollow 130H) is smaller than the outer diameter of the cooling structure 130, and can take appropriate values ​​in the range of about 2 mm to 6 mm, preferably 2.1 mm to 5.5 mm, more preferably 2.2 mm to 5 mm, even more preferably 2.3 mm to 4.5 mm, and even more preferably 2.4 mm to 4 mm, but is not limited thereto. Preferably, the inner diameter of the cooling structure 130 (i.e., the diameter of the hollow 130H) can be 2.5mm to 3.0mm or 3.5mm to 4.0mm, preferably 2.7mm to 2.9mm or 3.7mm to 3.9mm, more preferably 2.8mm or 3.8mm, etc., but not limited thereto.

[0100] In some embodiments, the inner diameter of the cooling structure 130 can be 10% to 90% of the outer diameter of the cooling structure 130, preferably 20% to 80%, more preferably 25% to 75%, even more preferably 30% to 70%, even more preferably 35% to 65%, but is not limited thereto.

[0101] In some embodiments, lyocell fibers may have an irregular cross-section. An irregular cross-section is defined as a shape whose cross-section is not circular but includes multiple protrusions. For example, a cross-section with multiple protrusions extending from the center can be referred to as an irregular cross-section.

[0102] In some embodiments, lyocell fibers may have a Y-shaped cross section including three protrusions branching from the center, a cross-shaped cross section including four protrusions, a star-shaped cross section including five or more protrusions, or an O-shaped cross section, but the invention is not limited thereto.

[0103] In some embodiments, the cooling structure 130 may further include at least one adhesive. The adhesive may be dispersed within the lyocell filament bundle constituting the cooling structure 130. Specifically, the adhesive may be distributed over the entire area of ​​the lyocell filament bundle constituting the cooling structure 130. The adhesive serves to impart appropriate stiffness to the cooling structure 130 by bonding the plurality of lyocell fibers constituting the lyocell filament bundle. As mentioned above, unlike cellulose acetate, lyocell does not contain plasticizing substances that harden lyocell fibers; therefore, by adding an adhesive, appropriate stiffness can be imparted to the cooling structure 130.

[0104] In some embodiments, the adhesive may include at least one of cellulose adhesives, vinyl adhesives, polyester adhesives, dextrin adhesives, starch adhesives, guar gum, xanthan gum, gum arabic, carrageenan, konjac, and agar, but is not limited thereto; any substance capable of binding multiple lyocell fibers and imparting appropriate stiffness may be used. For example, examples of cellulose adhesives may include hydroxypropyl methylcellulose (HPMC), ethyl cellulose (EC), methyl cellulose (MC), carboxymethyl cellulose (CMC), etc.; examples of vinyl adhesives may include polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), ethylene-vinyl acetate copolymer (EVAc), etc.; polyester adhesives may be polyesters comprising at least one of the group consisting of alkylene, arylalkylene, and heteroarylalkylene atoms having 5 to 12 carbon atoms; dextrin adhesives may include dextrin, etc.; starch adhesives may include starch (e.g., cassava, corn, wheat, potato, sweet potato, etc.), cationic starch, esterified starch, etc., but are not limited thereto.

[0105] In some embodiments, the adhesive included in the cooling structure 130 may be the same as or different from the adhesive included in the support structure 120.

[0106] In some embodiments, the adhesive may include at least one of the following: polyester, hydroxypropyl methylcellulose (HPMC), ethyl cellulose (EC), methyl cellulose (MC), carboxymethyl cellulose (CMC), polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), ethylene-vinyl acetate copolymer (EVAc), dextrin, tapioca starch, corn starch, wheat starch, potato starch, sweet potato starch, cationic starch, esterified starch, guar gum, xanthan gum, gum arabic, carrageenan, konjac, and agar.

[0107] In some embodiments, the adhesive may be added during the preparation of the cooling structure 130 by dispersing it within the lyocell filament bundle. For example, in the preparation process of the cooling structure 130, the adhesive may be added to the interior of the lyocell filament bundle by spraying adhesive onto the outer peripheral surface of the cylindrical lyocell filament bundle formed as described above, or alternatively or additionally, the adhesive may be added to the interior of the lyocell filament bundle from the heating rod through the inner surface of the lyocell filament bundle formed by winding the heating rod inside. However, the preparation method of the cooling structure 130 is not limited to these methods.

[0108] In some embodiments, the hardness of the cooling structure 130, comprising a lyocell tow dispersed with an adhesive, can be 60% to 99%, preferably 70% to 98.5%, more preferably 75% to 98%, even more preferably 80% to 97.5%, and even more preferably 85% to 97%, but is not limited thereto. The hardness of the cooling structure 130 refers to a numerical value representing the degree to which the diameter of the cooling structure 130 is maintained when pressed under a horizontal force perpendicular to the length direction of the cooling structure 130. This value can be a percentage of the ratio between the diameter of the cooling structure 130 after the applied force and the diameter of the cooling structure 130 before the applied force. By giving the cooling structure 130 a hardness within the aforementioned range, although the cooling structure 130 is a tubular structure composed of lyocell tow, the smoking article can stably maintain its shape. Furthermore, due to the stable shape retention of the cooling structure 130, deformation of the cooling structure 130 during storage or smoking of the smoking article 100 can be prevented or minimized, thus reducing the quality of the smoking experience.

[0109] The smoking article 100 according to the present invention, by making the cooling structure 130 composed of lyocell filament bundles and having a hollow tubular structure formed inside, effectively reduces the amount of water transferred during smoking by means of the superior hydrophilicity of lyocell filament bundles compared to cellulose acetate filament bundles, thereby reducing the heat felt by the user and maximizing the cooling effect.

[0110] Furthermore, the excellent heat resistance of lyocell tows can prevent or minimize deformation of the cooling structure caused by heat transferred from the heater of the smoking product or the aerosol generated within the smoking product. Unlike paper, it does not produce odors when heated, thus preventing a reduction in smoking quality due to material properties.

[0111] The mouthpiece portion 140 is a mouthpiece that contacts the user's mouth and can be used as a filter to ultimately transfer aerosols from upstream to the user. The mouthpiece portion 140 may be located downstream of the cooling structure 130, and the upstream of the mouthpiece portion 140 may be connected to the downstream of the cooling structure 130 and / or may form the downstream end of the smoking article 100.

[0112] In some embodiments, the mouthpiece portion 140 may be made into a cellulose acetate filter or a lyocell filter. That is, the mouthpiece portion 140 may be made using cellulose acetate fibers (i.e., cellulose acetate tow) as the filter material and / or lyocell fibers (i.e., lyocell tow) as the filter material. Although not shown in the figures, the mouthpiece portion 140 may also be made into a recessed filter. The length of the mouthpiece portion 140 may be from about 10 mm to 14 mm (e.g., 12 mm), but is not limited thereto.

[0113] In some embodiments, the mouthpiece portion 140 may include at least one capsule. The capsule may have a structure in which a solution of contents, including a flavoring agent, is encapsulated in a thin film. For example, the capsule may have a spherical or cylindrical shape. In some other embodiments, the mouthpiece portion 140 may also be a flavored filter in which a flavoring agent is dispersed within a filter tip.

[0114] For reference, the support structure 120, cooling structure 130, and mouthpiece 140 can all be used as a filter for aerosols. To emphasize their function as filters, each component can be referred to as a "filter section". For example, the support structure 120, cooling structure 130, and mouthpiece 140 can be referred to as the first filter section, the second filter section, and the third filter section, respectively.

[0115] The wrapping paper 150 can cover at least one of the medium portion 110, the support structure 120, the cooling structure 130, and the mouthpiece portion 140 for packaging. Although not shown in the figures, at least one of the medium portion 110, the support structure 120, the cooling structure 130, and the mouthpiece portion 140 can be individually wrapped with wrapping paper before being wrapped with wrapping paper 150. For example, the medium portion 110 can be wrapped with medium portion wrapping paper (not shown in the figures), and the support structure 120, the cooling structure 130, and the mouthpiece portion 140 can be wrapped with first filter wrapping paper (not shown in the figures), second filter wrapping paper (not shown in the figures), and third filter wrapping paper (not shown in the figures), respectively. However, the packaging method of the smoking product 100 and its components is not limited to this and can be changed.

[0116] In some embodiments, the packaging paper 150 may be formed with perforations 160 arranged around the cooling structure 130 (see reference). Figure 1 It can also be without perforation (no perforation, see reference). Figure 2 In some embodiments, the packaging paper 150 may be formed with perforations 160 arranged around the cooling structure 130, particularly around a section perpendicular to the length direction of the cooling structure 130 (see Figure 150). Figure 1 When perforations 160 are formed on the packaging paper 150, external air can flow into the interior of the cooling structure 130 through the multiple perforations 160. The entry of external air through the multiple perforations 160 can reduce the surface temperature of the mouthpiece and the temperature of the mainstream smoke transmitted to the smoker. However, the present invention is not limited thereto, and perforations may not be formed on the packaging paper 150. Even when perforations are not formed on the packaging paper 150, as described below, due to the excellent hydrophilicity of the lyocell material constituting the cooling structure 130, the moisture absorption performance in the mainstream smoke is excellent, thereby significantly reducing the heat sensation of the mainstream smoke after passing through the cooling structure 130.

[0117] In some embodiments, the second filter wrapping paper covering the cooling structure 130 may be porous or non-porous paper, capable of maintaining the hollow cylindrical structure of the cooling structure 130. Furthermore, the cooling structure 130 may also be made of materials such as flax and / or wood pulp, which may be necessary to maintain its combustibility and tobacco flavor during combustion. The second filter wrapping paper covering the cooling structure 130 may be non-porous rigid roll paper or porous general roll paper, but is not limited thereto. Additionally, the second filter wrapping paper included in the cooling structure 130 may include a plurality of perforations arranged around the periphery of the cooling structure 130. In some embodiments, the second filter wrapping paper may have a plurality of perforations arranged around the periphery of the cooling structure 130, particularly around a cross-section perpendicular to the length direction of the cooling structure 130. However, it is not limited thereto; the second filter wrapping paper of the cooling structure 130 may also not have perforations. Because the cooling structure 130 is formed from a bundle of lyocell fibers containing multiple lyocell fibers, it can still provide an excellent smoking experience even if the second filter wrapping paper covering the cooling structure 130 is a non-perforated roll paper without perforations.

[0118] The construction and effects of the present invention will be described in more detail below through embodiments and comparative examples. However, these embodiments are only used to further illustrate the present invention, and the scope of the present invention is not limited to these embodiments.

[0119] Example 1 Lyocell material was used to prepare, such as Figure 1 The cooling structure shown is a cylindrical Lyocell filament bundle formed around a heating rod, and a dextrin-based binder (dextrin) is injected into the Lyocell filament bundle from the heating rod through the inner circumference of the bundle, thereby preparing a cooling structure with an inner diameter of approximately 3.8 mm and a circumference of 22.6 mm. Subsequently, a cooling structure as shown is prepared. Figure 1 The smoking article 100 shown is a heated cigarette (as the smoking article of Example 1) having a medium part with a length of 12 mm, a hollow support structure made of cellulose acetate material with an inner diameter of 2.7 mm, an outer diameter of 7 mm and a length of 10 mm, a cooling structure with a length of 14 mm, and a mouthpiece part made of cellulose acetate filaments with a length of 12 mm. Its physical properties were measured, and the results are shown in Table 1.

[0120] Furthermore, in this specification, unless otherwise stated, PDC may refer to the suction resistance value measured with the media section open, the perforation of the filter nozzle closed, and external air prevented from entering, while PDO may refer to the suction resistance value measured with the media section open, the perforation of the filter nozzle not closed, and external air allowed to enter.

[0121] Comparative Example 1 Except for the use of cellulose acetate material to prepare the cooling structure, the heated cigarettes were prepared in the same manner as in Example 1, and physical properties such as draw resistance were measured. The results are shown in Table 1 below.

[0122] Experimental Example 1. Evaluation of Physical Properties To confirm the changes in the physical properties of smoking products with cooling structures made of different materials, experiments were conducted to measure the physical properties of smoking products according to Comparative Example 1 and Example 1. In particular, the weight, perimeter, and ventilation rate of the smoking products were measured, and the measurement results are recorded in Table 1 below.

[0123] Table 1

[0124] (In Table 1 above, Vent refers to Ventilation Rate (air dilution rate, VR).) As shown in Table 1 above, smoking products with cooling structures composed of lyocell tow and cellulose acetate exhibit similar physical properties, and their heat resistance, cooling-related air dilution rate (Ventilation rate, VR), and draw resistance are similar during smoking.

[0125] Experimental Example 2. Based on the amount of moisture migration (heat reduction effect) of the material of the cooling structure in smoking products. To compare the amount of moisture migration in the mainstream smoke of smoking products with cooling structures made of different materials, the medium section of the smoking products compared according to Comparative Example 1 and Example 1 was heated by external heating at a heating temperature of 190°C to 280°C, and the moisture content in the generated smoke (as the amount of moisture migration) was measured. The results are shown in Table 2 below.

[0126] In particular, the experiment was conducted on the smoking products according to Comparative Example 1 and Example 1 in a smoking room with an internal temperature of about 22±2°C and an internal relative humidity of about 60±5% (especially with a temperature of about 21.9°C and a relative humidity of 64.3%), under HC conditions (smoke volume: 55ml / smoke frequency: 30 seconds / smoke time: 2 seconds / smoke count: 9 times). The generated smoke was captured by a Cambridge filter (i.e., Cambridge filter pad, CFP), and the moisture content (moisture migration) captured in the Cambridge filter (CFP) was measured. The results are shown in Table 2 below.

[0127] Table 2

[0128] Referring to Tables 1 and 2 above, it can be seen that the smoking products of Example 1 and Comparative Example 1 have similar physical properties, but the smoking product of Example 1 has a lower moisture content in its mainstream smoke compared to the smoking product of Comparative Example 1. In other words, the smoking product of Example 1 has a lower amount of moisture migration in its mainstream smoke compared to the smoking product of Comparative Example 1. Therefore, the heat sensation (i.e., burning sensation) transmitted to the user through the mainstream smoke during smoking is lower in the smoking product of Example 1, whose cooling structure is made of lyocell material, than in the smoking product of Comparative Example 1, whose cooling structure is made of cellulose acetate. It can be presumed that this is because lyocell material has superior hydrophilicity compared to cellulose acetate material, and the moisture generated during smoking is absorbed by the lyocell filaments constituting the cooling structure when passing through it. That is to say, it can be confirmed that the smoking product of Example 1, whose cooling structure is made of lyocell material, is superior in reducing the heat sensation felt by the smoker during smoking compared to the smoking product of Comparative Example 1, whose cooling structure is made of cellulose acetate material.

[0129] Experimental Example 3. Evaluation based on the thermal deformation of the cooling structure material. To analyze the material deformation caused by heat during heating of the medium section of a smoking article using cooling structures made of different materials, the medium section of the smoking articles according to Comparative Example 1 and Example 1 was heated in the same manner as in Experimental Example 2 (i.e., heated to a heating temperature of 190°C to 280°C using external heating). The smoking articles were then disassembled, and photographs of the cooling structures were taken, as shown below. Figure 3 As shown. In Figure 3 middle, Figure 3 Part (a) consists of photographs of the cooling structures of Comparative Example 1 and Example 1 taken before the experiment (before smoking), in which... Figure 3 The left side of part (a) is the cooling structure of Comparative Example 1. Figure 3 The right side of part (a) is the cooling structure of Example 1. Furthermore, in Figure 3 middle, Figure 3 Part (b) consists of photographs of the cooling structures of Comparative Example 1 and Example 1 taken after the experiment (after smoking), in which... Figure 3 The left side of part (b) is the cooling structure of Comparative Example 1. Figure 3 The right side of part (b) is the cooling structure of Example 1.

[0130] exist Figure 3 In the middle, refer to Figure 3 As can be seen from part (a), before smoking, the cellulose acetate cooling structure of Comparative Example 1 was substantially the same in appearance as the Lyocell cooling structure of Example 1.

[0131] exist Figure 3 In the middle, refer to Figure 3As can be seen from section (b), after smoking (i.e., after heating and inhalation at a temperature of 190°C to 280°C), the cooling structure of Comparative Example 1 yellowed, while the cooling structure of Example 1 did not change color. This confirms that the heat generated during smoking causes discoloration of the cellulose acetate material, while the lyocell material does not.

[0132] Furthermore, it can be confirmed that after smoking, the cooling structure of Comparative Example 1 not only changed color but also melted and adhered (i.e., the materials melted and stuck together), causing shrinkage and making it differ from the shape of the wrapping paper covering the cooling structure, with its overall size becoming smaller than initially. However, the cooling structure of Example 1 substantially maintained the shape of the wrapping paper, and its overall shape remained largely unchanged. In other words, it can be confirmed that the cellulose acetate material (Comparative Example 1) melted upon heating, resulting in material deformation, while the lyocell material (Example 1) did not melt upon heating and therefore did not deform.

[0133] This indicates that lyocell material exhibits superior heat resistance compared to cellulose acetate material, effectively preventing or minimizing deformation caused by heat generated during smoking, heat in the aerosol moving within the smoking product, and / or heat applied to the heating medium. Therefore, it can be confirmed that the cooling structure of Example 1 has superior heat resistance and heat absorption performance compared to the cooling structure of Comparative Example 1, and based on its superior heat resistance, it has the advantage of maintaining its original shape without material deformation.

[0134] Example 2, Example 3 Similar to Example 1, cooling structures of Example 2 with an inner diameter of approximately 2.8 mm and a circumference of 22.6 mm, and of Example 3 with an inner diameter of approximately 3.8 mm and a circumference of approximately 22.6 mm, were prepared. Also similar to Example 1, cooling structures were prepared as described above. Figure 1 The smoking product 100 shown also has a structure including a medium part with a length of 12 mm, a hollow support structure made of cellulose acetate material with an inner diameter of 2.7 mm, an outer diameter of 7 mm and a length of 10 mm, a cooling structure of Example 2 or Example 3 with a length of 14 mm, and a mouthpiece part made of cellulose acetate filaments with a length of 12 mm. The physical properties of the smoking product were measured, and the results are shown in Table 3.

[0135] Table 3

[0136] (In Table 3 above, Vent represents the ventilation rate (VR).) Experimental Example 4. Composition analysis of smoke from the inner diameter of the cooling structure. To compare the composition of smoke with different inner diameters of the cooling structure, the media section of each smoking product according to Example 2 and Example 3 was heated by external heating at a heating temperature of 190°C to 280°C, and the total particulate matter (TPM), nicotine content, and moisture content were measured. The results are shown in Table 4 below.

[0137] In particular, the experiment was conducted on the smoking products of Examples 2 and 3 in a smoking room with an internal temperature of approximately 22±2°C and an internal relative humidity of approximately 60±5% (specifically, a temperature of approximately 21.9°C and a relative humidity of 64.3%), under HC conditions (puff volume: 55 ml / puff frequency: 30 seconds / puff time: 2 seconds / puff count: 9 puffs). The generated smoke was captured and analyzed after passing through a Cambridge filter (i.e., Cambridge filter pad, CFP). The total particulate matter (TPM) was measured as the change in weight of the Cambridge filter after smoking using the smoking device relative to the weight of the Cambridge filter before smoking. Other components were analyzed by gas chromatography (GC) of the captured smoke.

[0138] Table 4

[0139] Referring to Table 4 above, the amount of smoke components migrating during smoking may vary depending on the inner diameter of the cooling structure. Specifically, Example 2, with an inner diameter of 2.8 mm, showed a moisture migration of 17.77 mg, while Example 3, with an inner diameter of 3.8 mm, showed a moisture migration of 16.77 mg. This indicates that Example 3 exhibits less moisture migration compared to Example 2, suggesting that a larger inner diameter of the tubular structure results in a more effective reduction in perceived heat. Furthermore, Example 2 had an atomization volume (total PG+Gly) of 1.06 mg, while Example 3 had an atomization volume of 1.34 mg. This demonstrates that Example 3 exhibits a greater atomization volume compared to Example 2. In other words, compared to Example 2 with an inner diameter of 2.8 mm, Example 3, with an inner diameter of 3.8 mm, has a similar tar content but less moisture migration and a greater atomization volume, resulting in superior cooling and atomization, thus improving the user's smoking experience.

[0140] Figures 4 to 6 Examples illustrate various types of aerosol generating devices for smoking articles according to some embodiments of this disclosure. In particular, Figure 4 To illustrate a schematic structural diagram of the cigarette-type aerosol generating device 1000, Figure 5 and Figure 6This is a schematic structural diagram illustrating a hybrid aerosol generating apparatus 1000 that simultaneously uses liquid and cigarette smoke. The components of the aerosol generating apparatus 1000 will be described below.

[0141] like Figure 4 As shown, the aerosol generating device 1000 can be a device that generates aerosol by inserting a cigarette 2000 into its internal space. Here, the cigarette 2000 can correspond to the smoking product 100. Therefore, the cigarette 2000 can include the medium section 110, the support structure 120, and the cooling structure 130. More specifically, when the cigarette 2000 is inserted into the aerosol generating device 1000, the aerosol generating device 1000 can operate the heater section 1300 to generate aerosol from the cigarette 2000. The generated aerosol can be delivered to the user through the cigarette 2000.

[0142] As shown in the figure, the aerosol generating apparatus 1000 may include a battery 1100, a control unit 1200, and a heater unit 1300. However, Figure 4 Only components relevant to embodiments of this disclosure are shown. Therefore, those skilled in the art to which this disclosure pertains will understand that other components may also be included. Figure 4 Other common components besides those shown. For example, the aerosol generating apparatus 1000 may also include a display capable of outputting visual information and / or an electric motor for outputting tactile information, and / or at least one sensor (a suction detection sensor, a temperature sensor, and / or a cigarette insertion detection sensor, etc.). The components of the aerosol generating apparatus 1000 will be described below.

[0143] The battery 1100 supplies power to operate the aerosol generating apparatus 1000. For example, the battery 1100 can supply power to enable the heater section 1300 to operate, or it can supply power required to operate the control section 1200. In addition, the battery 1100 can supply power required to operate the display, sensors, and motors (not shown) installed in the aerosol generating apparatus 1000.

[0144] Secondly, the control unit 1200 can control the overall operation of the aerosol generating device 1000. In particular, the control unit 1200 can control not only the battery 1100 and the heater unit 1300, but also the operation of other components that may be included in the aerosol generating device 1000. Furthermore, the control unit 1200 can determine whether the aerosol generating device 1000 is in an operational state by checking the status of each component of the aerosol generating device 1000.

[0145] The control unit 1200 may include at least one processor. The processor may be implemented using a plurality of logic gate arrays, or it may be implemented using a combination of a general-purpose microprocessor and a memory storing a program executable on the microprocessor. Furthermore, those skilled in the art to which this disclosure pertains will understand that the control unit 1200 may be implemented as other types of hardware.

[0146] Secondly, the heater section 1300 can heat the cigarette 2000 using electricity supplied from the battery 1100. For example, when the cigarette 2000 is inserted into the aerosol generating device 1000, the heating element of the heater section 1300 is inserted into a portion of the inner side of the cigarette 2000 to increase the temperature of the aerosol forming matrix in the cigarette 2000.

[0147] In some embodiments, different Figure 4 Alternatively or additionally, the heater section 1300 may include an external heating element. In this case, the heating element of the heater section 1300 may be arranged outside the cigarette 2000 inserted into the device 1000. Furthermore, unlike the figures, the heater section 1300 may include multiple heating elements. For example, the heater section 1300 may include multiple internal heating elements or multiple external heating elements. As another example, the heater section 1300 may include one or more internal heating elements and one or more external heating elements.

[0148] The heating element may include a resistive material and / or any material capable of inductive heating, or be made of a resistive material and / or any material capable of inductive heating. However, this disclosure is not limited thereto; any material can be used as long as it can be heated to the desired temperature under the control of the control unit 1200. Here, the desired temperature may be preset in the aerosol generating device 1000, or it may be set by the user.

[0149] On the other hand, although Figure 4 The diagram shows the battery 1100, control unit 1200, and heater unit 1300 arranged in a row along the length direction, but the internal structure of the aerosol generating device 1000 is not limited to this. Figure 4 The example shown. In other words, the arrangement of the battery 1100, control unit 1200 and heater unit 1300 can be changed according to the design of the aerosol generating device 1000.

[0150] In the following text, reference will be made to Figure 5 and Figure 6 Description of the mixed aerosol generating apparatus 1000. For clarity of this disclosure, descriptions of repeating components 1100, 1200, and 1300 will be omitted.

[0151] like Figure 5 or Figure 6 As shown, the aerosol generating apparatus 1000 may also include a vaporizer 1400.

[0152] When the cigarette 2000 is inserted into the aerosol generating device 1000, the aerosol generating device 1000 can generate aerosol from the cigarette 2000 and / or the vaporizer 1400 by activating the heater section 1300 and / or the vaporizer 1400. The aerosol generated by the heater section 1300 and / or the vaporizer 1400 can be delivered to the user through the cigarette 2000. When the cigarette 2000 is inserted into the aerosol generating device 1000, the heating element of the heater section 1300 is arranged in contact with or adjacent to a portion of the outer side of the cigarette 2000 to externally increase the temperature of the aerosol forming matrix in the cigarette 2000.

[0153] The vaporizer 1400 can generate an aerosol by heating a liquid composition, and the generated aerosol can be delivered to the user through the cigarette 2000. In other words, the aerosol generated by the vaporizer 1400 can move along the airflow path of the aerosol generating device 1000, and the airflow path can be configured such that the aerosol generated by the vaporizer 1400 is delivered to the user through the cigarette 2000.

[0154] The vaporizer 1400 may include, but is not limited to, a liquid storage chamber, a liquid delivery device, and a liquid heating element. For example, the liquid storage chamber, the liquid delivery device, and the liquid heating element may be arranged as independent modules in the aerosol generating device 1000.

[0155] The reservoir can store a liquid composition (i.e., a liquid aerosol forming matrix). The reservoir can be made to be detachable from or installed on the vaporizer 1400, or it can be integrally formed with the vaporizer 1400.

[0156] Secondly, the liquid delivery device can transport the liquid composition in the storage chamber to the liquid heating element. For example, the liquid delivery device can be a wick made of materials such as cotton fiber, ceramic fiber, glass fiber, or porous ceramic, but is not limited to these.

[0157] A liquid heating element is a component used to heat a liquid composition conveyed by a liquid conveying device. For example, the liquid heating element can be a metal heating wire, a metal heating plate, a ceramic heater, etc., but is not limited to these. Furthermore, the liquid heating element can be made of a conductive filament such as a nickel-chromium alloy wire, or it can be arranged in a structure wound around the liquid conveying device. The liquid heating element can be heated by an electric current supply from the control unit 1200, and the liquid composition can be heated by transferring heat to the liquid composition in contact with the liquid heating element. As a result, an aerosol can be generated.

[0158] like Figure 5 or Figure 6 As shown, the vaporizer 1400 and the heater section 1300 can be arranged in parallel or in series. However, the scope of this disclosure is not limited to the arrangement described.

[0159] For reference, the vaporizer 1400 may be used interchangeably with terms in the art such as cartomizer or atomizer.

[0160] The control unit 1200 can further control the operation of the vaporizer 1400, and the battery 1100 can also further supply power to enable the vaporizer 1400 to operate.

[0161] At this point, we have referred to Figures 4 to 6 Various types of aerosol generating apparatus 1000 that can be applied to smoking articles 100 according to some embodiments of the present disclosure are described.

[0162] While embodiments of the present disclosure have been described above with reference to the accompanying drawings, those skilled in the art will understand that it can be implemented in other specific forms without altering the technical concept or essential features of the present disclosure. Therefore, it should be understood that the embodiments described are exemplary and non-limiting in all respects. The scope of protection of this disclosure should be determined by the claims, and all interpretations of the technical spirit within the equivalent scope should fall within the scope of the technical concept defined by this disclosure.

Claims

1. A smoking product, characterized in that, include: Medium section, The cooling structure is arranged separately from one side of the medium section, and A support structure is arranged between the medium section and the cooling structure; The cooling structure comprises a bundle of Lyocell fibers.

2. The smoking product according to claim 1, characterized in that, The lyocell bundles in the cooling structure have hollow tubular structures formed inside.

3. The smoking product according to claim 1, characterized in that, The cooling structure also includes an adhesive dispersed in the lyocell filament bundle.

4. The smoking article according to claim 3, characterized in that, The adhesive includes at least one of cellulose adhesives, vinyl adhesives, polyester adhesives, dextrin adhesives and starch adhesives.

5. The smoking article according to claim 4, characterized in that, The adhesive includes dextrin-based adhesives.

6. The smoking product according to claim 2, characterized in that, The inner diameter of the cooling structure is 10% to 90% of the outer diameter of the cooling structure.

7. The smoking article according to claim 2, characterized in that, The outer diameter of the cooling structure is 6mm to 10mm, and the inner diameter of the cooling structure is 2mm to 6mm.

8. The smoking article according to claim 2, characterized in that, In the support structure, one end of the support structure located on one side is connected to the cooling structure, and the other end of the support structure located on the opposite side of the one side is connected to the medium part. The support structure has a hollow tube formed inside, and the hollow part of the cooling structure is connected to the hollow part of the support structure.

9. The smoking article according to claim 8, characterized in that, The support structure includes at least one of cellulose acetate, the lyocell, and the paper tube.

10. The smoking article according to claim 1, characterized in that, It also includes a mouthpiece disposed on one side of the cooling structure.

11. The smoking article according to claim 1, characterized in that, It also includes packaging paper covering at least a portion of the cooling structure. The packaging paper includes a plurality of perforations arranged circumferentially along the cooling structure.

12. The smoking article according to claim 1, characterized in that, The length of the support structure is less than or equal to the length of the cooling structure.

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