SMOKING PRODUCT CONTAINING LYOCELL ROPE

Abstract

A smoking article is provided. The smoking article comprises: a tobacco rod; a front end plug which is disposed on one side of the tobacco rod and in which at least one channel is formed; 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 tobacco rod includes a medium substrate and a lyocell tow that includes a plurality of lyocell fibers.

Description

Smoking articles containing lyocell tow

[0001] The present invention relates to a smoking article which includes lyocell tow in a tobacco rod containing a tobacco material (e.g., which may be included in a medium substrate), thereby improving the settling rate of the tobacco material (e.g., which may be included in a medium substrate) and preventing the medium portion from being deformed by heat applied to heat the smoking article, thereby providing a user (consumer) with a more improved smoking experience.

[0002]

[0003] Modern smoking alternatives and related technologies employ structures utilizing various media to effectively transport tobacco components. Typically, these devices heat a stick to temperatures ranging from 150 to 300 degrees Celsius (°C). This heat is then transferred to the media, increasing the temperature of the media and facilitating the transport of tobacco components, including nicotine.

[0004]

[0005] In particular, ingredients like glycerin play a crucial role in generating aerosol, providing smokers with a satisfying experience while smoking. However, when the device's heating temperature is set below glycerin's boiling point, aerosolization does not occur smoothly, resulting in a degraded smoking experience.

[0006] To address these issues, prior art techniques have been developed that incorporate moisturizing agents into the medium or utilize plate-like leaves as the medium. Specifically, these techniques involve cutting plate-like leaves containing moisturizing agents into lengths to form the medium, or inserting plate-like leaves manufactured in sheet form. While these methods have provided a certain level of performance improvement, the following problems still persist:

[0007] First, during the process of cutting the plate-shaped leaflets and inserting them into the medium, some of the cut plate-shaped leaflets migrated into internal structures, such as the device's paper tube or element tube, causing contamination. This contaminated the device's internal structure or interfered with the adhesion of the tobacco stick.

[0008] Second, when using only the sheet-like material, it was difficult to incorporate additional ingredients, such as activated carbon and liquid nicotine, during the manufacturing process. While these additional ingredients are useful for increasing the transfer efficiency of tobacco ingredients, their application in sheet-like substrate structures was limited.

[0009] To address these issues, a method utilizing folding paper bases has been proposed. This method of constructing a medium by incorporating ingredients such as activated carbon, nicotine salts, and granules within the folding paper base offers the flexibility to incorporate a variety of ingredients. However, this method also has several limitations. The folding structure fails to structurally bind the ingredients tightly, resulting in a high loss rate (dropout rate) of ingredients during the manufacturing process. Furthermore, the paper odor and off-flavors emitted from the paper base detract from the user's smoking experience.

[0010] In addition, in the prior art, there have been attempts to stably fix substances such as activated carbon, nicotine salt, and granules by applying a dual composite filter (e.g., an activated carbon acetate filter (i.e., an activated carbon cellulose acetate filter) and an acetate filter (i.e., a cellulose acetate filter)) or a single filter to the medium portion. The activated carbon acetate filter is suitable for effectively fixing components structurally, but the cellulose acetate tow that constitutes it has a disadvantage of melting at high temperatures, making it difficult to use in a high-temperature environment.

[0011]

[0012] The problem to be solved by the present invention is to provide a smoking article which includes lyocell tow in a tobacco rod containing tobacco material (e.g., which may be included in a medium substrate), thereby improving the settling rate of the tobacco material and preventing the tobacco rod from being deformed by heat applied to heat the smoking article, thereby providing a more improved smoking experience to the user.

[0013] 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.

[0014]

[0015] According to one aspect of the present application for solving the above problem, a smoking article comprises a tobacco rod, a shear plug disposed on one side of the tobacco rod and having at least one channel formed therein, a first segment disposed on the other side of the tobacco rod opposite the one side, and a second segment disposed on the other side of the first segment, wherein the tobacco rod comprises a lyocell tow including a plurality of lyocell fibers and a medium substrate. In some embodiments, the shear plug, the tobacco rod, the first segment, and the second segment may be sequentially disposed along the longitudinal direction of the smoking article.

[0016] In some embodiments, the medium substrate may be filled in a dispersed form within the lyocell tow. This means that the lyocell tow may include the medium substrate in a dispersed form.

[0017] In some embodiments, the medium substrate may be positioned in the space between the plurality of lyocell fibers.

[0018] In some embodiments, the medium substrate comprises tobacco material, which may be in the form of at least one of tobacco particles, tobacco sheets, tobacco beads, tobacco granules, and tobacco powder.

[0019] In some embodiments, the medium substrate may comprise a plurality of tobacco granules in granular form comprising tobacco material.

[0020] In some embodiments, the first segment has a tube shape with a hollow portion formed therein, and the second segment may include at least one of cellulose acetate (hereinafter abbreviated as “CA”) and lyocell.

[0021] In some embodiments, the first segment may include at least one of a cellulose acetate filter, a lyocell filter, and a tube filter.

[0022] In some embodiments, the tobacco rod may further include a wrapper surrounding at least one of the tobacco rod, the shear plug, the first segment, and the second segment.

[0023] 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.

[0024]

[0025] According to the smoking article of the present invention, by including lyocell tow in a tobacco rod containing tobacco material (e.g., which may be included in a medium substrate), the settling rate of the tobacco material is improved and the tobacco rod is prevented from being deformed by heat applied to heat the smoking article, thereby providing a more improved smoking experience to the user.

[0026] 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.

[0027]

[0028] Figures 1 to 3 are drawings illustrating examples of smoking articles inserted into an aerosol generating device.

[0029] FIG. 4 is a drawing illustrating a smoking article according to one embodiment.

[0030] Figure 5 is a photograph of the filters of Example 1 and Comparative Example 1 taken before and after heating to compare the heat resistance characteristics of the filters of Example 1 and Comparative Example 1.

[0031] Figure 6 is a photograph of the tobacco rod of Example 2 and the tobacco rod of Comparative Example 2. Figure 6(a) is a photograph of the tobacco rod of Comparative Example 1 and Example 1 before the experiment (before smoking), and Figure 6(b) is a photograph of the tobacco rod of Comparative Example 1 and Example 1 after the experiment (after smoking).

[0032]

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] First, let's clarify some terms used in this specification.

[0039] 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.

[0040] In this specification, “smoking material” may mean any type of material that can be used in smoking articles.

[0041] In this specification, the term “user” may be used interchangeably with “consumer.”

[0042] 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.

[0043] 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).

[0044] As used herein, “lyocell filter” refers to a filter comprising or consisting of lyocell tow.

[0045] 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.

[0046] 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.

[0047] In this specification, “reconstituted tobacco leaves” may mean reconstituted tobacco leaves.

[0048] As used herein, the terms "reconstituted tobacco leaf" and "reconstituted tobacco sheet" may refer to a sheet made by combining tobacco by-products selected from the group consisting of stems, dust, particulates, and combinations thereof with a binder. In some embodiments, the reconstituted tobacco leaf is homogenized tobacco leaf.

[0049] 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.

[0050] 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.

[0051] 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, preferably three protrusions.

[0052] In some embodiments, the lyocell fibers included in the lyocell tow may have a Y-shaped cross-section for use in cigarette filters.

[0053] In this specification, "wrapping" a smoking article by a wrapper may refer to the wrapper surrounding at least a portion of the peripheral surface of the longitudinal axis of the smoking article.

[0054] 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.”

[0055] In this specification, a “recess-type rod” as a filter rod may refer to a filter rod including one or more pores.

[0056]

[0057] *In this specification, a “recess filter” as a filter may refer to a filter including one or more pores.

[0058] In this specification, “hollow” may mean a channel extending along the longitudinal direction.

[0059] 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.

[0060] 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.

[0061] In this specification, “hard paper” refers to paper having a basis weight greater than a certain value.

[0062] 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.

[0063] 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.

[0064] In this specification, the “single fiber” of lyocell tow or cellulose acetate tow means the fiber size of a single strand of monofilament separated from a multifilament of lyocell fibers or cellulose acetate fibers constituting the lyocell tow or cellulose acetate tow.

[0065] In this specification, the “total fineness” of lyocell tow or cellulose acetate tow means the fineness of the multifilaments of lyocell fibers or cellulose acetate fibers constituting the lyocell tow or cellulose acetate tow.

[0066] 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)) containing at least a portion of at least one of nicotine (hereinafter, abbreviated as "Nic") and tar contained in the smoke components generated when smoking the smoking article.

[0067] In this specification, “roundness” refers to the degree of deviation from a geometric circle. For example, the roundness of a filter can be defined as (radius of smaller circle / radius of larger circle) × 100% when two imaginary circles with the smallest distance between them are drawn among concentric circles that touch at least one point on the outer circumference of the filter in the filter cross-section.

[0068] In this specification, “drawing 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 drawing resistance measured when the tobacco rod is open, the perforation of the filter rod is blocked, and the inflow of outside air is blocked, and “PDO” means the value of the drawing resistance measured when the tobacco rod is open, the perforation of the filter rod is not blocked, and the inflow of outside air is allowed. For example, the drawing resistance can be measured using the method specified in ISO standard 6565:2015. According to ISO standard 6565:2015, the drawing 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 volume flow rate of 17.5 mm / s at the discharge end.

[0069] In some embodiments, room temperature may mean 20° C. to 25° C.

[0070] In this specification, when no separate physical quantity is indicated, component % and component ratio mean weight % of component and weight ratio of component, respectively.

[0071] 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.

[0072] 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.

[0073] In this specification, the “ventilation rate (hereinafter, “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.

[0074] 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 Filter Pad (CFP)) containing the smoke components is immersed in IPA (Isopropyl Alcohol) for a predetermined period of time (e.g., 20 minutes to 16 hours), 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 immersion time can be 20 minutes or more, especially in the case of tar or nicotine.

[0075] The amount of components (particularly the amount of nicotine components) remaining inside the filter (particularly, lyocell filter and / or lyocell tow) and / or segments constituting the tobacco rod after smoking can be measured by immersing the tobacco rod, filter and / or segments in water after smoking to extract the residual components (particularly the nicotine components) and analyzing them using GC / MS equipment. In this case, the tobacco rod, filter and / or segments can be immersed in a container containing distilled water overnight (for example, for 12 to 16 hours), and a solution containing the components thus extracted can be utilized for GC / MS analysis. The immersion time can be particularly 16 hours.

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

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

[0078]

[0079] Figures 1 to 3 are drawings illustrating examples of smoking articles inserted into an aerosol generating device.

[0080] 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).

[0081] 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.

[0082]

[0083] 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).

[0084] 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), the control unit (12), the heater (13), and the vaporizer (14) may be changed. In some embodiments, the battery (11), the control unit (12), and the heater (13) are arranged sequentially along the length of the smoking article (3).

[0085] 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.

[0086] 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).

[0087] 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).

[0088] 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.

[0089] 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.

[0090] 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).

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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).

[0098] 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, and / or various fruit-flavored ingredients. The flavoring agent may include ingredients that can provide a variety of flavors 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.

[0099] 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.

[0100] A heating element is an element for heating a liquid composition delivered by a liquid delivery means. For example, the heating element may be, but is not limited to, a metal heating wire, a metal heating plate, a ceramic heater, etc. 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.

[0101] For example, the vaporizer (14) may be referred to as a cartomizer or an atomizer, but is not limited thereto.

[0102] 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.

[0103] 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.

[0104] 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).

[0105] 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).

[0106]

[0107] 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).

[0108]

[0109] Hereinafter, the structure of the smoking article will be described with reference to Fig. 4.

[0110]

[0111] 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 a medium substrate (or tobacco material) and an aerosol generating material. The tobacco material may be tobacco.

[0112] 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).

[0113] 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).

[0114] 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).

[0115]

[0116] 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.

[0117]

[0118] 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 referred to as 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.

[0119]

[0120] 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.

[0121]

[0122] In some embodiments, the tobacco rod (31) may include lyocell tow comprising a plurality of lyocell fibers and a plurality of medium substrates filled inside the lyocell tow. In particular, the tobacco rod (31) may include a lyocell filter comprising or composed of lyocell tow, and a medium substrate inserted so as to be uniformly or randomly distributed along the interior of the lyocell filter in all or part of the lyocell filter.

[0123] In the present invention, the lyocell fiber included in the tobacco rod (31) 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.

[0124] 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.

[0125] 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. The terms used herein have the same meanings as defined above.

[0126] When manufacturing the tobacco rod (31), the medium substrate can be filled so as to be inserted into the inside of the lyocell tow. The plurality of lyocell fibers included in or constituting the lyocell tow can have spaces between the fibers, and the medium substrate can be settled in the spaces between the lyocell fibers. That is, the medium substrate can be filled in a dispersed form inside the lyocell tow. Accordingly, the medium substrate can be located in the spaces between the plurality of lyocell fibers included in or constituting the lyocell tow, and settled inside the lyocell tow, thereby being filled or settled inside the lyocell filter so as not to leak out to the outside in a form wrapped by the lyocell filter.

[0127] The tobacco rod (31) can be manufactured by, during the manufacturing process of the tobacco rod (31), injecting a medium substrate into or onto the tow while the tow constituting the filter is spread out, for example, by a method such as free fall, and wrapping or rolling the tow into which the medium substrate has been injected to form a predetermined shape such as a cylinder. Accordingly, the medium substrate can be inserted and filled so as to be randomly or uniformly distributed along the entire area or a portion of the lyocell tow. In other words, the medium substrate can be filled in a dispersed form inside the lyocell tow, positioned in the space between the lyocell fibers included in or constituting the lyocell tow.

[0128] According to the present invention, since the tow for filling the medium substrate in the tobacco rod (31) includes lyocell fibers having a plurality of lyocell fibers having a space therein or is composed of lyocell tow, the settling rate of the medium substrate is improved without a separate adhesive additive compared to cellulose acetate plasticized by a plasticizer, thereby improving the manufacturing process efficiency and the medium substrate retention. In addition, since the tow for filling the medium substrate in the tobacco rod (31) is composed of lyocell tow including a plurality of lyocell fibers having a space therein, in the case of paper, the phenomenon of the medium substrate being bounced off the paper surface when the medium substrate is inserted due to the grain of the paper is prevented, thereby improving the manufacturing process efficiency.

[0129] In addition, since the tobacco rod (31) is composed of lyocell tow, the excellent heat resistance of the lyocell tow can effectively prevent the shape of the tobacco rod (31) from being deformed by heat transmitted from a heater for heating the tobacco rod (31).

[0130] In some embodiments, the tobacco substrate may be a specific form of tobacco material. For example, the tobacco substrate may take the form of tobacco cut filler, tobacco particles, tobacco sheets, tobacco beads, tobacco granules, tobacco powder, and / or tobacco extract. In particular, the tobacco material may include, for example, one or more of tobacco leaves, tobacco veins, expanded tobacco, cut tobacco, sheet-shaped tobacco, and reconstituted tobacco.

[0131] The tobacco rod (31) may further include, 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 further contain other additives such as flavoring agents, humectants, and / or organic acids. In particular, a flavoring agent such as menthol and / or a moisturizer may be added to the tobacco rod (31). In particular, the flavoring agent such as menthol and / or a moisturizer may be added by being sprayed onto the tobacco rod (31).

[0132]

[0133] 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 tube-shaped 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 in a different shape from the other segments.

[0134]

[0135] Below, each segment of the filter load (32) is described in detail.

[0136]

[0137] 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.

[0138] In some embodiments, the first segment (321) of the filter rod (32) may include one or more of a cellulose acetate filter, a tube, and a lyocell filter including lyocell tow including a plurality of lyocell fibers. When the first segment (321) is a cellulose acetate filter and / or a lyocell filter, the first segment (321) may be a tubular structure including 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 (120H) and the first segment (321) may have a coaxial structure along the longitudinal direction. The length 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 adopted within the 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.

[0139] When the tobacco rod (31) is inserted into the heater (13), the phenomenon of the internal material of the tobacco rod (31) being pushed backward (i.e., in the direction opposite to the insertion direction) by the first segment (321) can be prevented, and an aerosol cooling effect can also be generated. When the first segment (321) is a cellulose acetate filter having a hollow space inside, the diameter of the hollow space of the first segment (321) can be suitably adopted in the range of 2 mm to 4.5 mm, and when the first segment (321) is a lyocell filter having a hollow space inside, the diameter of the hollow space of the first segment (321) can be suitably adopted in the range of 2 mm to 5.5 mm, and an appropriate value can be adopted within the range of 2 mm to 5.5 mm, preferably 2.1 mm to 5 mm, more preferably 2.2 mm to 4.5 mm, and even more preferably 2.5 mm to 4 mm, but is not limited thereto. When the first segment (321) is a pipe filter, an appropriate value may be adopted within the range of 5 mm to 7.5 mm in inner diameter, more preferably 6 mm to 7 mm, but is not limited thereto.

[0140] When the first segment (321) is composed of lyocell tow, the excellent heat resistance of the lyocell tow can effectively prevent the first segment (321) from being deformed due to heat transferred from a heater that heats the smoking article (3) or an aerosol generated within the smoking article (3).

[0141]

[0142] 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.

[0143]

[0144] 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.

[0145] 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.

[0146] During the process of manufacturing the second segment (322), the second segment (322) may be manufactured to generate a flavor by spraying a flavoring agent onto the second segment (322). Alternatively, or in addition, a separate fiber coated with a flavoring agent 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 element is added to the second segment (322), the effect of increasing the persistence of the flavor delivered to the user may be generated.

[0147] 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 or cylindrical shape.

[0148]

[0149] 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.

[0150] The length 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.

[0151]

[0152] The shear plug (33) may be manufactured by including cellulose acetate and / or lyocell. In addition, the shear plug (33) may include at least one channel within the interior, and the cross-sectional shape of the channel may be manufactured in various ways. For example, the cross-sectional shape of the channel formed within the shear plug (33) may be formed in various shapes such as trilobal, tetralobal, multilobal, polygonal, and hard shapes.

[0153]

[0154] Below, the wrapper (35) is described in detail.

[0155]

[0156] The first wrapper (351) may be a general filter paper with metal foil bonded to it. In some embodiments, the first wrapper (351) may be a general filter paper with aluminum foil bonded to it. 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.

[0157] In some embodiments, the third wrapper (353) surrounding the first segment (321) may have a basis weight greater than or equal to a predetermined value, and may include an oil-resistant hard paper that has been treated to be oil-resistant and / or a general hard paper that has not been treated to be oil-resistant, or may be composed of (i.e., manufactured from) an oil-resistant hard paper that has been treated to be oil-resistant and / or a general hard paper that has not been treated to be oil-resistant. Meanwhile, since the third wrapper (353) includes a hard paper that has a basis weight greater than or equal to a predetermined value, or is composed of a hard paper that has 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 may 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 grease-resistant hard paper and / or a general hard paper other than a grease-resistant hard paper, but is not limited thereto, 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, and even more preferably 75 gsm to 150 gsm.

[0158]

[0159] Hereinafter, 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 more specifically illustrate the present invention, and the scope of the present invention is not limited to these examples.

[0160]

[0161] Example 1 and Comparative Example 1

[0162] A lyocell filter was manufactured using lyocell tow having a single denier of 3.33 dtex (mono denier of 3.0) and a total denier of 3,889 tex (total denier of 35,000) under the conditions shown in Example 1 of Table 1, and a cellulose acetate filter was manufactured using cellulose acetate tow having a single denier of 3.00 dtex (mono denier of 2.7) and a total denier of 3,889 tex (total denier of 35,000) to which a plasticizer was added under the conditions shown in Comparative Example 1 of Table 1.

[0163]

[0164] Weight (mg) Circumference (mm) Suction resistance (mmH20) Example 157021.96350 Comparative example 154021.94387

[0165] Experimental Example 1. Evaluation of heat resistance according to filter material

[0166] In order to evaluate the heat resistance according to the filter material, the filters of Example 1 and Comparative Example 1 were heated to 250°C or higher by an external heating method under internal conditions of an internal temperature of about 22±2°C and an internal relative humidity of about 60±5%. The filter before heating was photographed and shown in Fig. 5(a), and the filter after heating was photographed and shown in Fig. 5(b).

[0167]

[0168] In Fig. 5(a), the left side is the filter of Comparative Example 1 before heating, and the right side is the filter of Example 1 before heating. In Fig. 5(b), the left side is the filter of Comparative Example 1 after heating, and the right side is the filter of Example 1 after heating.

[0169] Referring to Fig. 5, it can be confirmed that the shape of the cellulose acetate filter of Comparative Example 1 is significantly different before and after heating, and that it melts due to heat after heating and does not retain its actual shape. On the other hand, it can be confirmed that the shape of the lyocell filter of Example 1 is substantially similar to that before and after heating, with only some soot generated after heating. This confirms that cellulose acetate is a fiber with an amorphous structure and is weak to heat, causing complete melting, but lyocell has strong heat-resistant properties.

[0170]

[0171] Example 2 and Comparative Example 2

[0172] Tobacco granules were filled into lyocell tow having a single fiber count of 3.33 dtex (mono denier of 3.0) and a total fiber count of 3,889 tex (total denier of 35,000) and then wrapped with a paper roll to manufacture tobacco granule and lyocell filters having a length of 84 mm under the conditions shown in Example 2 of Table 2, and a plasticizer was added to cellulose acetate tow having a single fiber count of 3.00 dtex (mono denier of 2.7) and a total fiber count of 3,889 tex (total denier of 35,000) and then wrapped with a paper roll to manufacture cellulose acetate filters having a length of 84 mm under the conditions shown in Comparative Example 2 of Table 2. The wrapper used in the manufacture of the filter was a paper roll having a basis weight of 75 gsm.

[0173]

[0174] ClassificationWeight (mg)Circumference (mm)Circumference (%)Suction resistance (mmH20)Example 2900.723.8693.35518.4Comparative example 2901.521.9691.70576.4

[0175] Experimental Example 2. Evaluation of Physical Properties of Filter Materials Filled with Medium Substrates

[0176]

[0177] Next, the lyocell filter of Example 2 and the cellulose acetate filter of Comparative Example 2 were cut to a length of 15 mm to manufacture a smoking article (3) as shown in Fig. 4. In particular, a heated cigarette (smoking article) having a first segment including a shear plug having a length of 7 mm, a tobacco rod of Example 2 and Comparative Example 2, a pipe filter having a length of 12 mm and an inner diameter of 6 mm, and a second segment having a length of 14 mm and composed of cellulose acetate was manufactured, as in the smoking article (3) as shown in Fig. 4.

[0178]

[0179] In order to analyze the material deformation caused by heat generated when heating the tobacco rod of a smoking article according to the filter material filled with tobacco granules, the tobacco rod of the smoking article according to Example 2 and Comparative Example 2 was heated at a heating temperature of 190°C to 280°C (e.g., 250°C) in a smoking room (specifically, a temperature of about 21.9°C and a relative humidity of 64.3%) using an external heating method in which the tobacco rod was disassembled before and after heating, and the photographs are shown in FIG. 6.

[0180] Meanwhile, in FIG. 6, (a) is a photograph of the disassembled tobacco rods of Comparative Example 2 and Example 2 before heating, in which the left side of FIG. 6 (a) is the tobacco rod of Comparative Example 2 before heating, and the right side of FIG. 6 (a) is the tobacco rod of Example 2 after heating. In addition, in FIG. 6, (b) is a photograph of the disassembled tobacco rods of Comparative Example 2 and Example 2 after heating, in which the left side of FIG. 6 (b) is the tobacco rod of Comparative Example 2 before heating, and the right side of FIG. 6 (b) is the tobacco rod of Example 2 after heating.

[0181]

[0182] Referring to (a) of FIG. 6, it can be confirmed that the appearances of Comparative Example 2 (tobacco rod containing cellulose acetate) and Example 2 (tobacco rod containing lyocell) before heating are substantially the same.

[0183] Referring to (b) of FIG. 6, it can be seen that after heating (i.e., after heating to a temperature of 190°C to 280°C), the tobacco rod of Comparative Example 2 experienced significant shrinkage due to melting and fixation of the cellulose acetate tow. It can be seen that the cellulose acetate material shrank and melted due to the heat applied to the tobacco rod during heating.

[0184] On the other hand, referring to (b) of Fig. 7, it can be confirmed that in the case of Example 2, after heating (i.e., after heating to a temperature of 190°C to 280°C), soot due to heat is generated, but the shape is maintained in a generally similar manner to before heating. In addition, it can be confirmed that the tobacco granules filled in the tow are condensed inside the comparative example 2 (left) composed of cellulose acetate tow, but are stably settled and dispersed throughout the entire area of ​​the lyocell tow in Example 2 (right).

[0185] Meanwhile, by forming a tobacco rod by filling a medium base with lyocell tow rather than cellulose acetate tow, even when the tobacco rod is heated with a heater, the shape of the tobacco rod is maintained due to the excellent heat resistance of the lyocell tow, so that the transfer of smoking components is uniform, and problems such as breakage of the smoking article or deterioration in appearance quality can be prevented.

[0186]

[0187] Experimental Example 4. Smoke Component Analysis

[0188] A smoking article including the tobacco rod of Example 2 and satisfying the conditions of Table 3 below was manufactured, and an experiment was conducted to analyze smoke components. In particular, the tobacco rod of the smoking article of Example 2 was heated to a heating temperature of 190°C to 280°C using an external heating method, and the total particulate matter (TPM) and nicotine components in the aerosol and the nicotine components in the tobacco rod were measured, and the results are shown in Table 4 below.

[0189]

[0190] 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%, targeting a smoking article according to Example 2, 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 (i.e., Cambridge filter pad (CFP)) and analyzed. The total particulate matter (TPM) is a value obtained by measuring the change in the weight of the Cambridge filter before smoking and after smoking using the smoking device, and the remaining components were analyzed by GC (Gas Chromatography) of the smoke captured on the pad. Additionally, the amount of nicotine remaining inside the lyocell filter (specifically, lyocell tow) constituting the tobacco rod was measured by extracting the tobacco rod by immersing it in water after smoking and analyzing it using GC / MS equipment. At this time, the tobacco rod was immersed overnight in a container containing distilled water, and the solution containing the extracted components was used for GC / MS analysis.

[0191]

[0192] ClassificationWeight(mg)Circumference(mm)Vent(%)PDO(mmH20)PDC(mmH20)Smoking article of Example 2530.522.62914.6498.5107.9

[0193] Components in smoke Nicotine content in cigarette load (mg) Classification TPM (mg) Tar (mg) Nic (mg) Before smoking After smoking Example 220.4611.430.330.740.32

[0194] Referring to Table 4 above, in the case of Example 2, in which a tobacco rod is formed with lyocell tow filled with tobacco granules, the nicotine content in the tobacco rod remains at 0.32 mg, 40% of the pre-smoking level, even after smoking due to the heat-resistant insulation effect of the lyocell tow and the nicotine retention property, confirming that the nicotine retention property is also stable. Although the embodiments of the present disclosure have been described above with reference to the attached drawings, those skilled in the art to which the present disclosure pertains will understand that the present disclosure can be implemented in other specific forms without changing the technical idea or essential characteristics 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 in the scope of rights of the technical ideas defined by the present disclosure.

Claims

1. A smoking product containing: tobacco rod; a front plug located on one side of the tobacco rod and having at least one channel formed therein; a first segment located on the other side of the tobacco rod opposite to said one side; and the second segment, located on the other side of the first segment, wherein the tobacco rod includes a lyocell tow comprising a plurality of lyocell fibers and a medium substrate.

2. A smoking article according to claim 1, characterized in that the medium substrate is filled in a lyocell tow in dispersed form.

3. A smoking article according to claim 1, characterized in that the medium substrate is located in the space between a plurality of lyocell fibers.

4. A smoking article according to claim 1, characterized in that the medium substrate includes tobacco material and is in the form of at least one material selected from the group consisting of tobacco particles, tobacco sheets, tobacco balls, tobacco granules and tobacco powder.

5. A smoking article according to claim 1, characterized in that the medium substrate includes a plurality of tobacco granules in the form of granules including tobacco material.

6. A smoking article according to claim 1, characterized in that the first segment has a tubular shape with a cavity formed therein, and the second segment includes at least one of cellulose acetate or lyocell.

7. A smoking article according to claim 6, characterized in that the first segment includes at least one filter selected from the group consisting of a cellulose acetate filter, a lyocell filter, and a paper tube filter.

8. The smoking article of claim 1, further comprising a wrapper configured to wrap at least one element selected from the group consisting of a tobacco rod, a front plug, a first segment, and a second segment.