Smoking article comprising lyocell tow

Abstract

A smoking article is provided. The smoking article comprises: a tobacco rod; a front end plug disposed on one side of the tobacco rod; a first segment disposed on the other side opposite to the one side of the tobacco rod; and a second segment disposed on the other side of the first segment, wherein the first segment comprises a lyocell tow including a plurality of lyocell fibers.

Description

Smoking articles containing lyocell tow

[0001] The present invention relates to a smoking article that can provide a user with an improved smoking experience by applying lyocell tow to a first segment (cooling structure) constituting a filter portion of the smoking article, thereby preventing the first segment (cooling structure) from melting due to a high temperature applied to heat the smoking article.

[0002]

[0003] In smoking devices, the transfer of tobacco components (e.g., nicotine, tar) and the generation of vapor (atom) significantly impact the user's smoking experience. Typically, smoking devices operate by using a device to heat a stick to a high temperature of approximately 150-300°C. This heat is then transferred to a medium, which increases the temperature of the medium, allowing the smooth transfer of tobacco components such as nicotine. During this process, substances such as glycerin are heated to generate vapor, which is then delivered to the user for inhalation. However, if the device is set to a temperature below the boiling point of glycerin, atomization does not occur smoothly, limiting the transfer of tobacco components.

[0004]

[0005] To solve this problem, a cooling section (a segment of the filter section) has been conventionally incorporated into smoking articles to reduce discomfort caused by hot smoke when the user inhales.

[0006]

[0007] In the case where the cooling unit used in the past uses cellulose acetate (hereinafter abbreviated as “CA”) tow, the CA tow melts or deforms at a temperature of about 70℃ or higher and solidifies again. This phenomenon interferes with the smooth movement of smoke, generates a negative odor, and causes problems in that the cooling function is not properly performed.

[0008]

[0009] Therefore, to improve the performance of smoking devices, materials capable of withstanding heating temperatures of approximately 200-300°C are required to ensure smooth atomization and transfer of tobacco components. These materials must not melt or deform at high temperatures, yet effectively cool or reduce the temperature of the smoke, enhancing the user's smoking experience. Furthermore, materials that minimize dilution of tobacco components during the cooling process and deliver sufficient tar and nicotine during inhalation are required.

[0010]

[0011] The problem to be solved by the present invention is to provide a smoking article comprising a shear plug, a tobacco rod, a first segment, and a second segment, wherein the first segment is formed of lyocell tow made of a plurality of lyocell fibers, thereby preventing or minimizing deformation of the first segment due to heat transferred from a heater that heats the smoking article or an aerosol generated within the smoking article due to the excellent heat resistance of the lyocell tow.

[0012] Another problem to be solved by the present invention is to provide a smoking article comprising a shear plug, a tobacco rod, a first segment, and a second segment, wherein the first segment is formed of lyocell tow made of a plurality of lyocell fibers, thereby effectively reducing the amount of moisture transferred during smoking due to the excellent moisture affinity of the lyocell tow, thereby reducing the heat sensation felt by the user and maximizing the cooling effect.

[0013] Another problem to be solved by the present invention is to provide a smoking article comprising a first segment, a shear plug, a tobacco rod, and a second segment, which comprises lyocell tow made of a plurality of lyocell fibers and a binder, wherein the first segment is a tubular structure made of lyocell tow by imparting appropriate hardness to the lyocell tow through the binder, thereby stably maintaining its shape.

[0014] The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0015]

[0016] A smoking article according to one aspect of the present application for solving the above problem comprises a tobacco rod, a shear plug disposed on one side of the tobacco rod, a first segment disposed on the other side opposite to the one side of the tobacco rod, and a second segment disposed on the other side of the first segment, wherein the first segment comprises lyocell tow comprising a plurality of lyocell fibers.

[0017] In some embodiments, the lyocell tow of the first segment may have a tube shape with a hollow cavity formed therein.

[0018] In some embodiments, the first segment may further comprise at least one binder dispersed across the plurality of lyocell tows.

[0019] In some embodiments, the binder may include at least one of a cellulose-based binder, a vinyl-based binder, a polyester-based binder, a dextrin-based binder, and a starch-based binder.

[0020] In some embodiments, the binder may comprise at least one dextrin-based binder.

[0021] In some embodiments, the inner diameter of the first segment may be 10% to 90% of the outer diameter of the first segment.

[0022] In some embodiments, the outer diameter of the first segment may be between 6 mm and 10 mm.

[0023] In some embodiments, the inner diameter of the first segment may be between 2 mm and 6 mm, and the inner diameter of the first segment is smaller than the outer diameter.

[0024] In some embodiments, the outer diameter of the first segment may be 6 mm to 10 mm, and the inner diameter of the first segment may be 2 mm to 6 mm. The inner diameter of the first segment is smaller than the outer diameter.

[0025] In some embodiments, the inner diameter of the first segment may be 10% to 90% of the outer diameter of the first segment, the outer diameter of the first segment may be 6 mm to 10 mm, and the inner diameter of the first segment may be 2 mm to 6 mm.

[0026] In some embodiments, the shear plug may comprise at least one of cellulose acetate and lyocell.

[0027] In some embodiments, the shear plug may include at least one channel therein. At least one of the channels may extend longitudinally. At least one of the channels may extend longitudinally parallel to the longitudinal axis.

[0028] In some embodiments, the second segment may comprise at least one of cellulose acetate and lyocell.

[0029] In another aspect of the present application, a system is provided comprising the smoking article described above and an aerosol generating device applying the same.

[0030] In another aspect of the present application, a method of manufacturing the smoking article described above is provided.

[0031]

[0032] According to a smoking article according to one embodiment, by configuring the first segment (cooling structure) with lyocell tow made of a plurality of lyocell fibers, the excellent heat resistance of the lyocell tow can effectively prevent or minimize deformation of the first segment due to heat transferred from a heater that heats the smoking article or an aerosol generated within the smoking article.

[0033] In addition, according to a smoking article according to one embodiment, by configuring the first segment (cooling structure) with lyocell tow made of a plurality of lyocell fibers, the amount of moisture transferred during smoking is effectively reduced due to the superior moisture affinity characteristics of lyocell tow compared to cellulose acetate tow, thereby reducing the heat sensation felt by the user and maximizing the cooling effect.

[0034] In addition, according to a smoking article according to one embodiment, by manufacturing a first segment (cooling structure) including lyocell tow made of a plurality of lyocell fibers and a binder, an appropriate hardness can be imparted to the lyocell tow through the binder. As a result, the first segment can have the effect of stably maintaining its shape even though it is a tubular structure made of lyocell tow, and due to the stable shape maintenance of the first segment, deformation of the first segment during storage and / or smoking of the smoking article can be prevented, thereby deteriorating the quality of the smoking experience.

[0035] The effects according to the technical idea of ​​the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

[0036]

[0037] Figures 1 to 3 are drawings illustrating examples of smoking articles inserted into an aerosol generating device.

[0038] FIG. 4 is a drawing illustrating a smoking article according to one embodiment.

[0039] FIG. 5 is a photograph of the first segment of Example 1 and the first segment of Comparative Example 2. FIG. 5(a) is a photograph of the first segment of Comparative Example 1 and Example 1 before the experiment (before smoking), and FIG. 5(b) is a photograph of the first segment of Comparative Example 1 and Example 1 after the experiment (after smoking).

[0040]

[0041] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the attached drawings. The advantages and features of the present disclosure, and methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the attached drawings. However, the technical idea of ​​the present disclosure is not limited to the following embodiments and may be implemented in various different forms. The following embodiments are provided only to complete the technical idea of ​​the present disclosure and to fully inform those skilled in the art of the present disclosure of the scope of the present disclosure, and the technical idea of ​​the present disclosure is defined only by the scope of the claims.

[0042] When assigning reference numerals to components in each drawing, it should be noted that identical components are assigned the same numerals whenever possible, even if they appear on different drawings. Furthermore, when describing the present disclosure, if a detailed description of a related known configuration or function is deemed likely to obscure the gist of the present disclosure, such detailed description will be omitted.

[0043] Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used in the same sense as commonly understood by those of ordinary skill in the art to which this disclosure pertains. Furthermore, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise. The terminology used herein is for the purpose of describing embodiments and is not intended to limit the disclosure. In this specification, singular forms also include plural forms, unless specifically stated otherwise.

[0044] Additionally, terms such as first, second, A, B, (a), (b), etc. may be used to describe components of the present disclosure. These terms are only intended to distinguish the components from other components, and the nature, order, or sequence of the components are not limited by the terms. When a component is described as being "connected," "coupled," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but another component may also be "connected," "coupled," or "connected" between each component.

[0045] As used herein, the terms “comprises” and / or “comprising” do not exclude the presence or addition of one or more other components, steps, operations and / or elements.

[0046] First, let's clarify some terms used in this specification.

[0047] As used herein, the term "smoking article" may mean any smokeable product or any product capable of providing a smoking experience, whether based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, or tobacco substitutes. For example, smoking articles may include smokeable products such as cigarettes, cigars, and cigarillos.

[0048] In this specification, “smoking material” may mean any type of material that can be used in smoking articles.

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

[0050] In this specification, “upstream” or “upstream direction” may mean a direction away from the smoker’s mouth, and “downstream” or “downstream direction” may mean a direction approaching the smoker’s mouth.

[0051] As used herein, the term "longitudinal direction" may refer to a direction corresponding to the longitudinal axis of a smoking article. The "longitudinal axis" of a smoking article may refer to an imaginary line extending along the main longitudinal direction of the smoking article. This axis typically extends from one end of the smoking article (e.g., the mouthpiece or filter end) to the opposite end (e.g., the combustion or heat source end).

[0052] As used herein, “lyocell filter” refers to a filter comprising or consisting of lyocell tow.

[0053] As used herein, “Lyocell tow” refers to a bundle comprising or consisting of a plurality of Lyocell fibers. In some embodiments, Lyocell tow may refer to a bundle formed by cross-linking adjacent Lyocell fibers.

[0054] As used herein, “Lyocell fiber” may mean a fiber made from lyocell cellulose. In particular, the lyocell fiber may be a fiber made from cellulose derived from or primarily derived from wood pulp, particularly a semi-synthetic fiber.

[0055] As used herein, the term "non-circular cross-section" is defined as a cross-section whose shape is not circular but includes a plurality of protrusions. For example, a cross-section having a shape in which a plurality of protrusions branch and / or extend from the center and / or the center of the cross-section may be referred to as a non-circular cross-section. Here, "protrusion" may mean a distinct, extended segment or arm extending outward from the central core or joint point of the lyocell fiber cross-section.

[0056] In some embodiments, the lyocell fibers may have a Y-shaped cross-section with three protrusions branching and / or extending from the center and / or center of the cross-section, a cruciform cross-section with four protrusions, and / or a star-shaped cross-section with five or more protrusions, or may have an O-shaped cross-section, but are not limited thereto.

[0057] In some embodiments, the lyocell fibers may include three or more protrusions branching and / or extending from the center and / or the center of the cross-section.

[0058]

[0059] *In some embodiments, the lyocell fibers included in the lyocell tow may have a Y-shaped cross-section for use in cigarette filters.

[0060] In this specification, “hollow” may mean a channel extending along the longitudinal direction.

[0061] In the present specification, the cross-sectional shape of a channel formed inside a shear plug, which is "trilobal," "quadrilobal," or "multilobal," may refer to a cross-section having three, four, or more protrusions branching and / or extending from the center of the channel cross-section, respectively. Here, "protrusion" may mean a distinct, extended segment or arm extending outward from the central core or junction point of the channel cross-section.

[0062] In this specification, "consisting of" an element may mean including or consisting of that element.

[0063] In this specification, a “tubular type rod” as a filter rod may refer to a filter rod that includes a hollow space inside, while a filter rod that does not include a hollow space inside may be referred to as a “cylindrical type rod.”

[0064] In this specification, a “recess-type rod” as a filter rod may refer to a filter rod having one or more pores.

[0065] In this specification, a “recess filter” as a filter may refer to a filter having one or more pores.

[0066] In this specification, “wrapping” of a smoking article by a wrapper may refer to the wrapping of at least a portion of the periphery surface of the longitudinal axis of each part and / or structure of the smoking article by the wrapper.

[0067] In this specification, "basis weight" refers to the mass per unit area of ​​the paper and / or wrapper. The basis weight of the paper and / or wrapper can be determined by measuring the mass and area of ​​the paper and / or wrapper and dividing the mass of the paper and / or wrapper by the area. The unit of basis weight is gsm (gram per square meter), i.e. g / m 2 It could be.

[0068] In this specification, “hard paper” refers to paper having a basis weight greater than a certain value.

[0069] In some embodiments, “oil-resistant paper” may refer to paper having an oil-resistant treatment on the paper surface, and “oil-resistant hard paper” may refer to hard paper having an oil-resistant treatment on the paper surface.

[0070] In some embodiments, “general paper” may refer to paper whose surface has not been treated with an oil-resistant coating, and “general hard paper” may refer to hard paper whose surface has not been treated with an oil-resistant coating.

[0071] In this specification, the hardness of the first segment is a value that quantifies the degree to which the diameter of the first segment is maintained when the first segment is pressed with a certain level of force in a direction perpendicular to the longitudinal direction of the first segment, and may be a percentage of the diameter of the first segment after the force is applied compared to the diameter of the first segment before the force is applied. For example, the hardness (%) of the first segment can be calculated as (Da) / D × 100%. Here, D is the diameter of the first segment, and a represents the distance lowered by a 300 g weight (i.e., the first segment is pressed). The measurement value required for calculating the hardness is, for example, a DHT 200 of Filtrona. TM can be obtained using. In measuring the hardness, the force applied to the first segment can be considered as a value equivalent to the force applied when an actual user holds a smoking article.

[0072] A filter of a smoking article according to one aspect of the present invention can capture at least a portion of smoke components generated when smoking the smoking article. In some embodiments, the filter of the smoking article can capture particulate matter (total particulate matter (TPM)) including at least a portion of at least one of nicotine (hereinafter abbreviated as “Nic”), tar, propylene glycol (hereinafter abbreviated as “PG”), and glycerin (hereinafter abbreviated as “Gly”) contained in the smoke components generated when smoking the smoking article.

[0073] In this specification, “suction resistance” means the static pressure difference between the two ends of a sample when an airflow crosses the sample. In this specification, “PDC” means the value of the suction resistance measured when the medium part is open, the perforations of the filter part are blocked, and the inflow of outside air is blocked, and “PDO” means the value of the suction resistance measured when the medium part is open, the perforations of the filter part are not blocked, and the inflow of outside air is allowed. For example, the suction resistance can be measured using the method specified in ISO standard 6565:2015. According to ISO standard 6565:2015, the suction resistance can mean the static pressure difference between the two ends of a sample when it is crossed by an airflow under normal conditions (22±2℃, 60±5% relative humidity) with a volumetric flow rate of 17.5 mm / s at the discharge end.

[0074] In this specification, organic acid is a general term for organic compounds that are acidic.

[0075] In some embodiments, room temperature may mean 20° C. to 25° C.

[0076] In this specification, when no separate physical quantity is indicated, component % and component ratio mean weight % of component and weight ratio of component, respectively.

[0077] As used herein, "puff" refers to the act of inhaling or drawing air through a smoking article to produce and inhale smoke or vapor. "Puff count" may refer to the total number of inhalations or draws made while using the smoking article. Alternatively, or in addition, the puff count may refer to the maximum number of inhalations or draws that the smoking article can provide before being completely consumed or ceases to function.

[0078] In this specification, the HC (Health Canada) conditions may be conditions in which the puff volume per puff is 55 ml, the puff frequency is every 30 seconds, and the puff duration is 2 seconds. In particular, the HC conditions may be conditions in which the perforations of the filter are blocked. The number of puffs measured under the HC conditions may be conditions in which 9 puffs are taken.

[0079] In this specification, the "ventilation rate (hereinafter may be abbreviated as "Vent")" of a smoking article may be defined as the ratio, expressed as a percentage, of the total volumetric flow rate (e.g., ml / s) of air that enters the smoking article without being burned or heated, i.e., through the front area of ​​the smoking article, i.e., the longitudinal upstream end, to the total volumetric flow rate (e.g., ml / s) of air at the outlet of the smoking article, i.e., the longitudinal downstream end. For example, the ventilation rate may be measured according to ISO 9512:2019. For example, the total volumetric flow rate of air that enters the smoking article without being burned or heated, i.e., through the front area of ​​the smoking article, may be the total volumetric flow rate of air that enters in a direction perpendicular to the longitudinal direction of the smoking article. For example, the total volumetric flow rate of air that enters the smoking article without being burned or heated, i.e., through the wrapper, may be the total volumetric flow rate of air that enters the smoking article.

[0080] The content of components in the total particulate matter (TPM) of the captured smoke can be analyzed using GC / MS (gas chromatography-mass spectrometry). For example, in the case of tar or nicotine, the Cambridge filter (Cambridge Felter Pad (CFP)) containing the smoke components is immersed in IPA (Isopropyl Alcohol) for a specified period of time (e.g., 20 minutes to 16 hours), and in the case of PG and Gly, the Cambridge filter (Cambridge Felter Pad (CFP)) containing the smoke components is immersed in methanol for a specified period of time (e.g., 2 hours to 16 hours), and then treated with a shaker device and passed through a PTFE (Polytetrafluoroethylene) syringe filter to remove impurities. Then, the content of components contained in the total particulate matter (TPM) of the captured smoke can be measured using GC / MS equipment. The soaking time may be more than 20 minutes, especially for tar or nicotine, and more than 2 hours for PG and Gly.

[0081] The above GC / MS may be, for example, a measuring device from Agilent.

[0082] Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the attached drawings.

[0083]

[0084] Figures 1 to 3 are drawings illustrating examples of smoking articles inserted into an aerosol generating device.

[0085] Referring to Fig. 1, the aerosol generating device (1) includes a battery (11), a control unit (12), and a heater (13). Referring to Figs. 2 and 3, the aerosol generating device (1) further includes a vaporizer (14). In addition, a smoking article (3) can be inserted into the internal space of the aerosol generating device (1).

[0086] The aerosol generating device (1) illustrated in FIGS. 1 to 3 illustrates components related to the present embodiment. Accordingly, a person skilled in the art related to the present embodiment will understand that, in addition to the components illustrated in FIGS. 1 to 3, the aerosol generating device (1) may further include other general-purpose components.

[0087]

[0088] In addition, although FIGS. 2 and 3 illustrate that the aerosol generating device (1) includes a heater (13), the heater (13) may be omitted if desired. In some embodiments, the aerosol generating device (1) does not include a heater. In some embodiments, the battery (11), the control unit (12), and the vaporizer (14) are arranged sequentially, i.e., in a row, along the length of the smoking article (3).

[0089] In FIG. 1, a battery (11), a control unit (12), and a heater (13) are illustrated as being arranged in a row. In some embodiments, the battery (11), the control unit (12), and the heater (13) are sequentially arranged along the longitudinal direction of the smoking article (3). In addition, FIG. 2 illustrates that the battery (11), the control unit (12), the vaporizer (14), and the heater (13) are arranged in a row along the longitudinal direction of the smoking article (3). In some embodiments, the battery (11), the control unit (12), the vaporizer (14), and the heater (13) are sequentially arranged, i.e., in a row, along the longitudinal direction of the smoking article (3). In addition, FIG. 3 illustrates that the vaporizer (14) and the heater (13) are arranged in parallel. However, the internal structure of the aerosol generating device (1) is not limited to that illustrated in FIGS. 1 to 3. In other words, depending on the design of the aerosol generating device (1), the arrangement of the battery (11), control unit (12), heater (13), and vaporizer (14) can be changed.

[0090] When a smoking article (3) is inserted into an aerosol generating device (1), the aerosol generating device (1) can generate an aerosol by operating a heater (13) and / or a vaporizer (14). The aerosol generated by the heater (13) and / or the vaporizer (14) passes through the smoking article (3) and is delivered to the user.

[0091] If necessary, the aerosol generating device (1) can heat the heater (13) even when the smoking article (3) is not inserted into the aerosol generating device (1).

[0092] The battery (11) supplies power used to operate the aerosol generating device (1). For example, the battery (11) can supply power to heat the heater (13) or the vaporizer (14), and can supply power required for the control unit (12) to operate. In addition, the battery (11) can supply power required for the operation of the display, sensor, motor, etc. installed in the aerosol generating device (1).

[0093] The control unit (12) controls the overall operation of the aerosol generating device (1). In particular, the control unit (12) controls the operation of the battery (11), heater (13), and vaporizer (14) as well as other components included in the aerosol generating device (1). In addition, the control unit (12) can also check the status of each component of the aerosol generating device (1) to determine whether the aerosol generating device (1) is in an operable state.

[0094] The control unit (12) includes at least one processor. The processor may be implemented as an array of multiple logic gates, or as a combination of a general-purpose microprocessor and a memory storing a program executable on the microprocessor. Furthermore, those skilled in the art will appreciate that the processor may be implemented using other types of hardware.

[0095] The heater (13) can be heated by power supplied from the battery (11). For example, when the smoking article (3) is inserted into the aerosol generating device (1), the heater (13) can be located outside the smoking article (3). Accordingly, the heated heater (13) can increase the temperature of the aerosol generating material within the smoking article (3).

[0096] The heater (13) may be an electrical resistance heater. For example, the heater (13) may include an electrically conductive track, and the heater (13) may be heated as current flows through the electrically conductive track. However, the heater (13) is not limited to the above-described example, and any heater capable of heating to a desired temperature may be used without limitation. Here, the desired temperature may be preset in the aerosol generating device (1), or may be set to a desired temperature by the user.

[0097] Meanwhile, as another example, the heater (13) may be an induction heating heater. In particular, the heater (13) may include an electrically conductive coil for heating the smoking article (3) by induction heating, and the smoking article (3) may include a susceptor that can be heated by the induction heating heater.

[0098] For example, the heater (13) may include a tubular heating element, a plate-shaped heating element, a needle-shaped heating element, and / or a rod-shaped heating element, and may heat the inside and / or the outside of the smoking article (3) depending on the shape of the heating element.

[0099] In addition, a plurality of heaters (13) may be arranged in the aerosol generating device (1). At this time, the plurality of heaters (13) may be arranged to be inserted into the interior of the smoking article (3) or may be arranged on the exterior of the smoking article (3). In addition, some of the plurality of heaters (13) may be arranged to be inserted into the interior of the smoking article (3), and the rest may be arranged on the exterior of the smoking article (3). In some embodiments, the heater (13) may heat the interior and the exterior of the smoking article (3). In addition, the shape of the heater (13) is not limited to the shape illustrated in FIGS. 1 to 3, and may be manufactured in various shapes. In some embodiments, the heater (13) may include an electrical resistance heater and an induction heating heater.

[0100] The vaporizer (14) can generate an aerosol by heating the liquid composition, and the generated aerosol can be delivered to the user by passing through the smoking article (3). In other words, the aerosol generated by the vaporizer (14) can travel along the airflow passage of the aerosol generating device (1), and the airflow passage can be configured so that the aerosol generated by the vaporizer (14) can pass through the smoking article (3) and be delivered to the user. The vaporizer (14) can generate an aerosol by heating the liquid composition, and can emit the aerosol toward the smoking article so that the aerosol passes through the smoking article inserted into the smoking article insertion portion.

[0101] For example, the vaporizer (14) may include, but is not limited to, a liquid storage unit, a liquid delivery means, and a heating element. For example, the liquid storage unit, the liquid delivery means, and the heating element may be included in the aerosol generating device (1) as independent modules.

[0102] The liquid storage unit can store a liquid composition. For example, the liquid composition can be a liquid containing a tobacco-containing substance including volatile tobacco flavoring components, or a liquid containing a non-tobacco substance. The liquid storage unit can be designed to be detachable from / attached to the vaporizer (14), or can be designed as an integral part of the vaporizer (14).

[0103] For example, the liquid composition may include water, a solvent, ethanol, a plant extract, a fragrance, a flavoring agent, and / or a vitamin mixture. The flavoring agent may include, but is not limited to, menthol, peppermint oil, spearmint oil, various fruit-flavored ingredients, and the like. The flavoring agent may include ingredients that can provide a variety of flavors and / or tastes to the user. The vitamin mixture may include, but is not limited to, a mixture of at least one of vitamin A, vitamin B, vitamin C, and vitamin E. Additionally, the liquid composition may include an aerosol-forming agent such as glycerin and propylene glycol.

[0104] The liquid delivery means can deliver the liquid composition from the liquid storage to the heating element. For example, the liquid delivery means can be, but is not limited to, a wick such as cotton fiber, ceramic fiber, glass fiber, or porous ceramic.

[0105] A heating element is an element for heating a liquid composition delivered by a liquid delivery means. For example, the heating element may include, but is not limited to, a metal heating wire, a metal heating plate, and / or a ceramic heater. In addition, the heating element may be composed of a conductive filament, such as a nichrome wire, and may be arranged in a structure that is wound around the liquid delivery means. The heating element may be heated by a current supply and may transfer heat to the liquid composition in contact with the heating element, thereby heating the liquid composition. As a result, an aerosol may be generated.

[0106] For example, the vaporizer (14) may be referred to as a cartomizer or an atomizer, but is not limited thereto.

[0107] Meanwhile, the aerosol generating device (1) may further include general-purpose components in addition to the battery (11), the control unit (12), the heater (13), and the vaporizer (14). For example, the aerosol generating device (1) may include a display capable of outputting visual information and / or a motor for outputting tactile information. In addition, the aerosol generating device (1) may include at least one sensor (such as a puff detection sensor, a temperature detection sensor, and / or a smoking article insertion detection sensor). In addition, the aerosol generating device (1) may be manufactured in a structure in which external air can be introduced or internal gas can be discharged even when the smoking article (3) is inserted.

[0108] Although not illustrated in FIGS. 1 to 3, the aerosol generating device (1) may also be configured as a system with a separate cradle. For example, the cradle may be used to charge the battery (11) of the aerosol generating device (1). Alternatively, or in addition, the heater (13) may be heated while the cradle and the aerosol generating device (1) are combined.

[0109] The smoking article (3) may be similar to a typical combustion-type smoking article. For example, the smoking article (3) may be divided into a tobacco rod (31) containing tobacco material and an aerosol-generating substance, and a filter rod (32) containing a filter or the like. Alternatively, the filter rod (32) of the smoking article (3) may also contain an aerosol-generating substance. For example, an aerosol-generating substance in the form of granules or capsules may be inserted into the tobacco rod (31) and optionally into a portion of the filter rod (32).

[0110] The entire tobacco rod (31) may be inserted into the aerosol generating device (1), and the filter rod (32) may be exposed to the outside. Alternatively, only a portion of the tobacco rod (31) may be inserted into the aerosol generating device (1), or the entire tobacco rod (31) and a portion of the filter rod (32) may be inserted. The user may inhale the aerosol while holding the filter rod (32) in his or her mouth. At this time, the aerosol is generated by external air passing through the tobacco rod (31), and the generated aerosol is delivered to the user's mouth through the filter rod (32).

[0111]

[0112] In some embodiments, outside air may be introduced through at least one air passage formed in the aerosol generating device (1). For example, the opening and / or the size of the air passage formed in the aerosol generating device (1) may be controlled by the user. Accordingly, the amount of vapor, the smoking sensation, etc. may be controlled by the user. As another example, outside air may be introduced into the interior of the smoking article (3) through at least one hole formed in the surface of the smoking article (3).

[0113]

[0114] Hereinafter, the structure of the smoking article will be described with reference to Fig. 4.

[0115]

[0116] Referring to FIG. 4, the smoking article (3) includes a tobacco rod (31), a filter rod (32), and a shear plug (33). The tobacco rod (31) includes tobacco material and an aerosol generating material. The tobacco material may be tobacco.

[0117] In some embodiments, in a smoking article, a filter rod (32), a tobacco rod (31) and a shear plug (33) are sequentially arranged along the length of the smoking article (3).

[0118]

[0119] The filter rod (32) may be adjacent to one side of the tobacco rod (31) or the rear end of the tobacco rod (31). The filter rod (32) may include a first segment (321) for cooling the aerosol and a second segment (322) for filtering a predetermined component contained within the aerosol. In some embodiments, the first segment (321) is positioned between the tobacco rod (31) and the second segment (322).

[0120] In this specification, in order to emphasize the function of the first and second segments (321, 322) as filters, the first segment (321) may be referred to as a cooling structure (321), and the second segment (322) may be referred to as a mouthpiece portion (322).

[0121]

[0122] The shear plug (33) may be located on one side of the tobacco rod (31) facing the filter rod (32) or on the other side opposite to one side of the tobacco rod (31). The shear plug (33) may be adjacent to the front end of the tobacco rod (31). The shear plug (33) may prevent the tobacco rod (31) from escaping to the outside and may prevent liquefied aerosol from the tobacco rod (31) from flowing into the aerosol generating device (designator '1' in FIGS. 1 to 3) during smoking.

[0123]

[0124] The smoking article (3) may be wrapped by at least one wrapper (35). The wrapper (35) may surround the smoking article (3). In some embodiments, the smoking article (3) may be wrapped by at least one wrapper (35) surrounding at least a portion of the smoking article (3). For example, the shear plug (33) may be wrapped by a first wrapper (351), the tobacco rod (31) may be wrapped by a second wrapper (352), the first segment (321) may be wrapped by a third wrapper (353), and the second segment (322) may be wrapped by a fourth wrapper (354). Optionally, the entire smoking article (3) may be rewrapped by a fifth wrapper (355). The fifth wrapper (355) may be an outer wrapper, and the first wrapper (351), second wrapper (352), third wrapper (353), and fourth wrapper (354) surrounded by the fifth wrapper (355) may be referred to as inner wrappers.

[0125]

[0126] The diameter of the smoking article (3) may be within the range of 5 mm to 9 mm, but is not limited thereto. For example, the length of the shear plug (33) may be about 4 mm to 20 mm (e.g., 7 mm), the length of the tobacco rod (31) may be about 13 mm to 17 mm (e.g., 15 mm), the length of the first segment (321) may be about 7 mm to 20 mm (e.g., 12 mm), and the length of the second segment (322) may be about 4 mm to 20 mm (e.g., 14 mm), but is not limited thereto.

[0127]

[0128] The tobacco rod (31) may contain, for example, at least one of aerosol generating substances such as glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol, but is not limited thereto. In particular, the tobacco rod (31) may contain at least one other additive substance such as a flavoring agent, a humectant, and / or an organic acid. In particular, a flavoring liquid including menthol and / or a humectant may be added to the tobacco rod (31) by spraying it onto the tobacco rod (31).

[0129] The tobacco rod (31) can be manufactured in various ways. For example, the tobacco rod (31) may be manufactured as a sheet and / or as a strand. Alternatively, or in addition, the tobacco rod (31) may be manufactured as a cut tobacco sheet that is finely chopped. Furthermore, the tobacco rod (31) may be manufactured by including at least one of tobacco particles, tobacco sheets, tobacco beads, tobacco granules, and tobacco powder. When the tobacco rod (31) includes tobacco granules or the like, it may further include paper and / or lyocell tow and / or cellulose acetate tow for fixing the tobacco granules or the like.

[0130]

[0131] There is no limitation on the shape of the filter rod (32). For example, the filter rod (32) may be a cylindrical rod or a tubular rod having a hollow portion therein. In addition, the filter rod (32) may be a recessed rod. If the filter rod (32) is composed of a plurality of segments, at least one of the segments may be manufactured to have a different shape from the other segments.

[0132]

[0133] Below, each segment of the filter load (32) is described in detail.

[0134]

[0135] The first segment (321) of the filter rod (32) can cool the aerosol generated by the heater (13) heating the tobacco rod (31). Accordingly, the user can inhale the aerosol cooled to an appropriate temperature.

[0136] According to one embodiment, the first segment (321) of the filter rod (32) may be a lyocell filter composed of lyocell tow including a plurality of lyocell fibers. The first segment (321) may be a tube-shaped structure having a hollow portion therein. The hollow portion may extend along the longitudinal direction of the first segment (321). The hollow portion may be located at the center of a cross-section perpendicular to the longitudinal direction of the first segment (321) and may extend along the longitudinal direction of the first segment (321). The hollow portion and the first segment (321) may have a coaxial structure along the longitudinal direction. The length and / or diameter of the first segment (321) may be variously determined depending on the shape of the smoking article (3). For example, the length of the first segment (321) may be appropriately employed within a range of 7 mm to 20 mm. Preferably, the length of the first segment (321) may be about 12 mm, but is not limited thereto.

[0137] When the tobacco rod (31) is inserted into the heater (13) by the first segment (321), the phenomenon of the internal material of the tobacco rod (31) being pushed backward (i.e., in the opposite direction to the insertion direction) can be prevented, and a cooling effect of the aerosol can also be generated.

[0138] In the present invention, the lyocell fiber included in the first segment (321) may be an environmentally friendly fiber made from cellulose extracted from wood pulp. The lyocell tow may refer to a bundle formed by cross-linking adjacent lyocell fibers.

[0139] In some embodiments, the outer diameter of the first segment (321) may be approximately 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, even more preferably 7 mm. The inner diameter (i.e., the diameter of the hollow) of the first segment (321) may be smaller than the outer diameter of the first segment (321), but may be any appropriate value within the range of approximately 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 first segment (321) may be, but is not limited to, 2.5 mm to 3.0 mm or 3.5 mm to 4.0 mm, preferably 2.7 mm to 2.9 mm or 3.7 mm to 3.9 mm, or more preferably 2.8 mm or 3.8 mm.

[0140] In some embodiments, the inner diameter of the first segment (321) may be, but is not limited to, 10% to 90%, preferably 20% to 80%, more preferably 25% to 75%, more preferably 30% to 70%, and more preferably 35% to 65% of the outer diameter of the first segment (321).

[0141] In some embodiments, lyocell fibers may have a non-circular cross-section. A non-circular cross-section is defined as a cross-section that is not circular but includes multiple protrusions. For example, a cross-section having multiple protrusions extending from a center may be considered non-circular.

[0142] In some embodiments, the lyocell fibers may have a Y-shaped cross-section with three protrusions branching from the center, a cross-shaped cross-section with four protrusions, and / or a star-shaped cross-section with five or more protrusions, or may have an O-shaped cross-section, but are not limited thereto.

[0143] In some embodiments, the first segment (321) may further include at least one binder. The binder may be dispersed in the lyocell tow constituting the first segment (321). In particular, the binder may be distributed throughout the entire area of ​​the lyocell tow constituting the first segment (321). The binder may function to bind between the plurality of lyocell fibers constituting the lyocell tow and impart appropriate hardness to the first segment (321). As described above, unlike cellulose acetate, lyocell does not have a plasticizer material that hardens the lyocell fibers, and thus, by adding at least one binder instead, the first segment (321) may be imparted with appropriate hardness.

[0144] In some embodiments, the binder may include at least one of a cellulose-based binder, a vinyl-based binder, a polyester-based binder, a dextrin-based binder, a starch-based binder, guar gum, xanthan gum, gum arabic, carrageenan, konjac, and agar, but is not limited thereto as long as it is a material capable of binding between a plurality of lyocell fibers to impart appropriate hardness. For example, the cellulose-based binder may include hydroxypropylmethylcellulose (HPMC), ethylcellulose (EC), methylcellulose (MC), carboxymethylcellulose (CMC), etc., the vinyl-based binder may include polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), ethylene vinyl acetate (EVAc), etc., the polyester-based binder may be a polyester including at least one selected from the group consisting of alkylene, arylene, and heteroarylene having 5 to 12 carbon atoms, the dextrin-based binder may include dextrin, etc., and the starch-based binder may include starch (e.g., tapioca, corn, wheat, potato, sweet potato, etc.), cationic starch, and / or esterified starch, but is not limited thereto.

[0145] In some embodiments, the binder may include at least one of a polyester, hydroxypropylmethylcellulose (HPMC), ethylcellulose (EC), methylcellulose (MC), carboxymethylcellulose (CMC), polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), ethylene vinyl acetate (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, wherein the polyester comprises one or more selected from the group consisting of alkylene, arylene, and heteroarylene having 5 to 12 carbon atoms.

[0146] In some embodiments, the binder may be added to be dispersed within the lyocell tow during the manufacturing process for making the first segment (321). For example, during the manufacturing process for the first segment (321), the binder may be added to the interior of the lyocell tow by wrapping the lyocell tow around the heater rod and spraying the binder onto the outer surface of the cylindrical lyocell tow formed to wrap the heater rod from the inside, or alternatively, or in addition, the binder may be added to the interior of the lyocell tow by adding the binder from the heater rod through the inner surface of the lyocell tow formed to wrap the heater rod from the inside, but the method for manufacturing the first segment (321) is not limited thereto.

[0147] In some embodiments, the hardness of the first segment (321) including the lyocell tow having the binder dispersed therein may be, but is not limited to, 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%. The hardness of the first segment (321) is a value that quantifies the degree to which the diameter of the first segment (321) is maintained when the first segment (321) is pressed with a certain level of force in a direction perpendicular to the longitudinal direction of the first segment (321), and may be a value that is a percentage ratio between the diameter of the first segment (321) before applying the force and the diameter of the first segment (321) after applying the force. Since the first segment (321) has a hardness within the above range, the first segment (321) can have the effect of stably maintaining its shape despite being a tubular structure composed of lyocell tow, and due to the stable shape maintenance of the first segment (321), the quality of the smoking experience can be prevented from being deformed and / or deteriorated during storage and / or smoking of the smoking article (3).

[0148] The smoking article (3) according to the present invention is formed of a tube in which the first segment (321) is formed of lyocell tow and has a hollow interior, so that the amount of moisture transferred during smoking is effectively reduced due to the superior moisture affinity of lyocell tow compared to cellulose acetate tow, thereby reducing the heat felt by the user and maximizing the cooling effect.

[0149] In addition, the excellent heat resistance of lyocell tow can effectively prevent or minimize deformation of the first segment (321) due to heat transferred from a heater heating the smoking article (3) or an aerosol generated within the smoking article (3).

[0150]

[0151] The second segment (322) of the filter rod (32) can cool the aerosol generated by the heater (13) heating the tobacco rod (31). Accordingly, the user can inhale the aerosol cooled to an appropriate temperature. In addition, the second segment (322) can serve as a mouthpiece that comes into contact with the user's mouth and as a filter that ultimately delivers the aerosol delivered from upstream to the user.

[0152] The length of the second segment (322) can be appropriately selected within the range of 4 mm to 20 mm. For example, the length of the second segment (322) can be about 14 mm, but is not limited thereto.

[0153] The second segment (322) of the filter rod (32) may be a cellulose acetate filter or a lyocell filter. That is, the second segment (322) may be manufactured using cellulose acetate fibers (particularly, cellulose acetate tow) as a filter material or lyocell fibers (particularly, lyocell tow) as a filter material. Although not illustrated, the second segment (322) may also be manufactured as a recessed filter.

[0154] During the process of manufacturing the second segment (322), the second segment (322) may be manufactured to generate a flavor by spraying a flavoring liquid containing at least one flavoring component and / or a moisturizer onto the second segment (322). The flavoring component may include, for example, menthol. Alternatively, or in addition, separate fibers coated with a flavoring liquid may be inserted into the interior of the second segment (322). The aerosol generated from the tobacco rod (31) is cooled as it passes through the first segment (321), and the cooled aerosol is delivered to the user through the second segment (322). Therefore, when a flavoring component is added to the second segment (322), the effect of increasing the persistence of the flavor delivered to the user may be generated.

[0155] The interior of the second segment (322) may include at least one capsule (34). Here, the capsule (34) may have a structure in which a liquid containing a fragrance is wrapped with a film. For example, the capsule (34) may have a spherical and / or cylindrical shape.

[0156]

[0157] The shear plug (33) can serve to prevent the liquefied aerosol from the tobacco rod (31) from flowing into the aerosol generating device (designator '1' in FIGS. 1 to 3) during smoking.

[0158] The length and / or diameter of the shear plug (33) may vary depending on the shape of the smoking article (3). For example, the length of the shear plug (33) may be appropriately selected within the range of 4 mm to 20 mm. Preferably, the length of the shear plug (33) may be approximately 7 mm, but is not limited thereto.

[0159]

[0160] The shear plug (33) may be manufactured to include or consist of cellulose acetate and / or lyocell. In addition, the shear plug (33) may include at least one channel therein, and the cross-sectional shape of the channel may be manufactured in various ways. For example, the cross-sectional shape of the channel formed inside the shear plug (33) may be formed in various shapes, such as trilobal, tetralobal, multilobal, polygonal, and hard shapes.

[0161]

[0162] Below, the wrapper (35) is described in detail.

[0163]

[0164] The first wrapper (351) may be a general filter paper combined with a metal foil, such as aluminum foil. In some embodiments, the first wrapper (351) may be a general filter paper combined with aluminum foil. The second wrapper (352) and the third wrapper (353) may be made of general filter paper. For example, the second wrapper (352) and the third wrapper (353) may each independently be a porous paper or a non-porous paper.

[0165] In some embodiments, the third wrapper (353) wrapping the first segment (321) may have a basis weight greater than or equal to a predetermined value and may be composed of (i.e., manufactured from) at least one of an oil-resistant hard paper having an oil-resistant treatment and a general hard paper having no oil-resistant treatment. Meanwhile, since the third wrapper (353) is composed of a hard paper having a basis weight greater than or equal to a predetermined value, it may not only function as a packaging material surrounding the first segment (321) including lyocell tow, but also function to impart a certain level of hardness or greater to the filter rod (32) according to the present invention. The third wrapper (353) may include a grease-resistant hard paper and / or a general hard paper other than a grease-resistant hard paper, and may include a paper having a basis weight of 30 gsm to 180 gsm, preferably 35 gsm to 170 gsm, more preferably 40 gsm to 160 gsm, even more preferably 50 gsm to 158 gsm, even more preferably 60 gsm to 155 gsm, even more preferably 70 gsm to 150 gsm, even more preferably 75 gsm to 150 gsm, but is not limited thereto.

[0166]

[0167] Below, the composition and resulting effects of the present invention will be described in more detail through examples and comparative examples. However, these examples are intended to illustrate the present invention more specifically, and the scope of the present invention is not limited to these examples.

[0168]

[0169] Example 1

[0170] A first segment having a structure as shown in Fig. 4 was manufactured using lyocell material. In particular, a cylindrical lyocell tow was formed to surround the heater rod using a heater rod, and a dextrin binder (dextrin) was injected into the lyocell tow through the inner surface of the lyocell tow from the heater rod, thereby manufacturing a first segment having an inner diameter of about 3.8 mm and a circumference of about 22.6 mm. Thereafter, a heated cigarette (as a smoking article of Example 1) having a structure of a shear plug having a length of 7 mm, a tobacco rod including a tobacco material and having a length of 15 mm, the first segment of Example 1 having a length of 12 mm, and a second segment composed of cellulose acetate having a length of 14 mm, as shown in the smoking article (3) shown in Fig. 4, was manufactured, and the physical properties were measured and shown in Table 1 below.

[0171] Unless otherwise specified herein, PDC may refer to a value of suction resistance measured when the tobacco rod is open, the perforations of the filter part are blocked, and the inflow of external air is blocked, and PDO may refer to a value of suction resistance measured when the tobacco rod is open, the perforations of the filter part are not blocked, and the inflow of external air is allowed.

[0172]

[0173] Comparative Example 1

[0174] A heated cigarette (as a smoking article of Comparative Example 1) was manufactured in the same manner as in Example 1, except that the first segment was manufactured using a cellulose acetate material, and the physical properties were measured and shown in Table 1 below.

[0175]

[0176] Experimental Example 1. Physical Characteristics Evaluation

[0177] In order to determine changes in the physical properties of smoking articles according to the materials constituting the first segment, experiments were conducted to measure the physical properties of smoking articles according to Comparative Example 1 and Example 1. In particular, the weight, circumference, and suction resistance Vent (Ventilation Rate) of smoking articles were measured, and the measurement results are shown in Table 1 below.

[0178]

[0179] ClassificationWeight(mg)Circumference(mm)PDO(mmH20)PDC(mmH20)Vent(%)Comparative Example 1524.622.652.387.053.4Example 1537.622.651.584.853.3

[0180] (In Table 1 above, Vent means air dilution rate (VR).) Referring to Table 1 above, it can be confirmed that smoking articles each composed of lyocell tow and cellulose acetate as the materials constituting the first segment exhibit similar physical properties, and that the air dilution rate (VR) and suction resistance characteristics that can be related to heat resistance and cooling during smoking are similar.

[0181]

[0182] Experimental Example 2. Moisture transfer amount (heat reduction effect) of smoking articles according to the material of the first segment.

[0183] In order to compare the amount of moisture transferred into the mainstream smoke of smoking articles according to the materials constituting the first segment, the tobacco rods of smoking articles according to Comparative Example 1 and Example 1 were heated at a heating temperature of 190°C to 280°C using an external heating method, and the moisture content (as moisture transferred amount) in the generated smoke was measured, and is shown in Table 2 below.

[0184] In particular, the experiment was conducted in a smoking room (specifically, a temperature of about 21.9°C and a relative humidity of 64.3%) with an internal temperature of about 22±2°C and an internal relative humidity of about 60±5%, using smoking articles according to Comparative Example 1 and Example 1, and the smoking conditions were HC conditions (Puff volume: 55 ml / Puff frequency: 30 s / Puff duration: 2 s / Number of puffs: 9 puffs), and the generated smoke was captured in a Cambridge filter (i.e., Cambridge filter pad (CFP)) and the moisture content (moisture transfer amount) captured in the Cambridge filter (pad) was measured, which is shown in Table 2 below.

[0185]

[0186] Moisture content (mg) Comparative example 122.91 Example 116.19

[0187] Referring to Tables 1 and 2 above, it can be confirmed that the smoking articles of Example 1 and Comparative Example 1 have similar physical properties, but the moisture content of the mainstream smoke is lower in the smoking article of Example 1 than in the smoking article of Comparative Example 1. That is, since the amount of moisture transfer in the mainstream smoke of the smoking article of Example 1 is lower than that of the smoking article of Comparative Example 1, it can be expected that the heat sensation (hot sensation) transmitted to the user through the mainstream smoke during smoking is lower in the smoking article of Example 1, in which the first segment is composed of a lyocell material, than in the smoking article of Comparative Example 1, in which the first segment is composed of a cellulose acetate material. This can be presumed to be due to the superior moisture affinity of the lyocell material compared to the cellulose acetate material, whereby the moisture in the aerosol moving inside the smoking article during smoking passes through the first segment composed of lyocell and is absorbed into the lyocell tow constituting the first segment. That is, it can be confirmed that the smoking article of Example 1, in which the first segment is composed of a lyocell material, is superior in reducing the heat sensation felt by a smoker when smoking compared to the smoking article of Comparative Example 1, in which the first segment is composed of a cellulose acetate material.

[0188] Experimental Example 3. Evaluation of thermal deformation according to the material of the first segment.

[0189]

[0190] In order to analyze the material deformation caused by heat generated when heating the tobacco rod of the smoking article according to the material constituting the first segment, the tobacco rods of the smoking articles according to Comparative Example 1 and Example 1 were heated in the same manner as in Experimental Example 2 (i.e., heated to a heating temperature of 190°C to 280°C using an external heating method), and then the smoking articles were disassembled to take pictures of the first segments, and the pictures are shown in FIG. 5. In FIG. 5, FIG. 5(a) is a picture of the first segment of Comparative Example 1 and Example 1 before the experiment (before smoking), in which the left side of FIG. 5(a) is the first segment of Comparative Example 1, and the right side of FIG. 5(a) is the first segment of Example 1. In addition, in FIG. 5, FIG. 5(b) is a picture of the first segment of Comparative Example 1 and Example 1 after the experiment (after smoking), in which the left side of FIG. 5(b) is the first segment of Comparative Example 1, and the right side of FIG. 5(b) is the first segment of Example 1.

[0191]

[0192] Referring to FIG. 5(a) in FIG. 5, it can be confirmed that the appearance of the cellulose acetate first segment of Comparative Example 1 and the lyocell first segment of Example 1 before smoking are substantially the same.

[0193] Referring to FIG. 5(b) in FIG. 5, it can be confirmed that after smoking (i.e., after heating to a temperature of 190°C to 280°C and puffing), the first segment of Comparative Example 1 discolored yellow, but the first segment of Example 1 did not discolor. From this, it can be confirmed that the cellulose acetate material discolored due to the heat generated within the smoking article during smoking, but the lyocell material did not discolor.

[0194] In addition, after smoking, the first segment of Comparative Example 1 not only discolored but also melted and stuck (i.e., melted and stuck), and it was confirmed that the shape of the wrapper surrounding the first segment was different and became smaller than the initial shape, but the first segment of Example 2 was confirmed to be substantially the same as the shape of the wrapper and thus largely maintained the initial shape. That is, it was confirmed that the cellulose acetate material (Comparative Example 1) was deformed due to a melting phenomenon caused by heat, but the lyocell material (Example 1) was not deformed because it did not melt due to heat.

[0195] This is because the lyocell material has superior heat resistance compared to the cellulose acetate material, and thus can effectively prevent or minimize deformation that may occur due to heat generated during smoking, heat within the aerosol, and / or heat for heating the tobacco rod. Accordingly, it can be confirmed that the first segment of Example 1 has superior heat absorption performance compared to the first segment of Comparative Example 1, and has the advantage of being able to maintain its original shape without material deformation based on its superior heat resistance.

[0196]

[0197] Examples 2 and 3

[0198] As in Example 1, a first segment of Example 2 having an inner diameter of about 2.8 mm and a circumference of 22.6 mm and a first segment of Example 3 having an inner diameter of about 3.8 mm and a circumference of 22.6 mm were manufactured, respectively, and a heated cigarette (as a smoking article of Examples 2 and 3) having a structure of a shear plug having a length of 7 mm, a tobacco rod including a tobacco material and having a length of 15 mm, a first segment of Example 2 or Example 3 having a length of 12 mm, and a second segment composed of cellulose acetate having a length of 14 mm was manufactured, and the physical properties were measured and shown in Table 3 below.

[0199]

[0200] Classification (inner diameter) Weight (mg) Circumference (mm) PDO (mmH20) PDC (mmH20) Vent (%) Example 2 (2.8 mm) 615.62 2.53 855.45 6.67 05 Example 3 (3.8 mm) 612.72 2.59 455.85 7.27 78

[0201] (In Table 3 above, Vent means ventilation rate (VR).)

[0202] *Experimental Example 4. Analysis of smoke components according to the inner diameter of the first segment

[0203]

[0204] In order to compare the components in the smoke according to the inner diameter of the first segment, the tobacco rods of the smoking articles according to Examples 2 and 3 were heated at a heating temperature of 190°C to 280°C using an external heating method, and the total particulate matter (TPM), nicotine components, moisture content, etc. were measured, and the results are shown in Table 4 below.

[0205] In particular, the experimental method was conducted in a smoking room (specifically, a temperature of about 21.9°C and a relative humidity of 64.3%) with an internal temperature of about 22±2°C and an internal relative humidity of about 60±5%, using smoking articles according to Examples 2 and 3, and the smoking conditions were HC conditions (Puff volume: 55 ml / Puff frequency: 30 s / Puff duration: 2 s / Number of puffs: 9 puffs), and the generated smoke was captured on a Cambridge filter (pad) and analyzed. The total particulate matter (TPM) was a value obtained by measuring the change in the weight of the Cambridge filter before smoking and after smoking using the smoking device, and for the remaining components, the captured smoke was analyzed by GC (Gas Chromatography).

[0206]

[0207] Classification TPM (mg) Tar (mg) Nic (mg) PG (mg) Gly (mg) Moisture (mg) Example 224.62 13.77 0.34 0.60 2.4 1 10.51 Example 329.66 15.69 0.43 0.87 3.5 1 13.54

[0208] Referring to Table 4 above, the smoke components transferred during smoking may differ depending on the difference in the inner diameter of the first segment. In particular, the moisture transfer amount of Example 2, where the inner diameter of the first segment is 2.8 mm, is 10.51 mg, and the moisture transfer amount of Example 3, where the inner diameter of the first segment is 3.8 mm, is 13.54 mg. It can be confirmed that Example 3 has a larger moisture transfer amount than Example 2, and that the smaller the inner diameter of the tubular structure, the better the effect of reducing the user's heat sensation.

[0209] Although the embodiments of the present disclosure have been described with reference to the attached drawings, those skilled in the art will appreciate that the present disclosure can be implemented in other specific forms without changing the technical concepts or essential features thereof. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of protection of the present disclosure should be interpreted by the claims below, and all technical ideas within a scope equivalent thereto should be interpreted as being included within the scope of the technical ideas defined by the present disclosure.

Claims

1. Tobacco load; A shear plug arranged on one side of the above tobacco rod; A first segment arranged on the other side opposite to the one side of the said tobacco rod; and Including a second segment arranged on the other side of the first segment, The first segment comprises a lyocell tow comprising a plurality of lyocell fibers, Smoking items.

2. In paragraph 1, The lyocell tow of the first segment has a tube shape with a hollow space formed inside. Smoking items.

3. In paragraph 1, The first segment further comprises a binder dispersed in the plurality of lyocell tows. Smoking items.

4. In paragraph 3, The above binder comprises at least one of a cellulose-based binder, a vinyl-based binder, a polyester-based binder, a dextrin-based binder, and a starch-based binder. Smoking items.

5. In paragraph 4, The above binder comprises a dextrin-based binder, Smoking items.

6. In paragraph 2, The inner diameter of the first segment is 10% to 90% of the outer diameter of the first segment. Smoking items.

7. In paragraph 2, The outer diameter of the above first segment is 6 mm to 10 mm, The inner diameter of the above first segment is 2 mm to 6 mm, Smoking items.

8. In paragraph 1, The above shear plug comprises at least one of cellulose acetate or lyocell, Smoking items.

9. In paragraph 1, The above shear plug comprises at least one channel therein, Smoking items.

10. In paragraph 1, The second segment comprises at least one of cellulose acetate and lyocell. Smoking items.

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