A smoking article comprising lyocell tow

Abstract

A smoking article is provided. The smoking article includes a first portion including an aerosol generating substrate impregnated with an aerosol generating element, a second portion including a tobacco element, a third portion including a cooling element, and a fourth portion including a filter element, the first portion, the second portion, the third portion, and the fourth portion being arranged in sequence along a length direction of the smoking article, the fourth portion including a lyocell tow including a plurality of lyocell fibers.

Description

Technical Field

[0001] This invention relates to a smoking article in which lyocell tow is applied to the filter element of the smoking article to prevent the filter element from melting due to the high temperature applied to heat the smoking article, effectively reducing the heat sensation generated during the initial inhale, thereby providing the user with a richer and more improved smoking experience. Background Technology

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

[0003] On the other hand, existing cigarette mouthpieces use cellulose acetate (CA) tow to filter components in the mainstream smoke. However, with cellulose acetate (CA) tow, the tow melts or deforms and re-solidifies at temperatures above approximately 70°C. This can hinder the smooth flow of smoke, produce unpleasant odors, and prevent the filter from functioning effectively. Summary of the Invention

[0004] Technical issues The problem to be solved by the present invention is to provide a smoking article in which lyocell tow is applied to the filter element of the smoking article to prevent the filter element from melting due to the high temperature of the heat applied to heat the smoking article, effectively reducing the heat generated during the initial inhalation, thereby providing the user with a richer and more improved smoking experience.

[0005] The technical problem of this invention is not limited to the technical problem described above. Through the following description, those skilled in the art can clearly understand other technical problems not mentioned.

[0006] Solution to the problem A smoking article according to one aspect of this application for solving the above-mentioned problems includes: a first part comprising an aerosol generating substrate impregnated with an aerosol generating element; a second part comprising a tobacco element; a third part comprising a cooling element; and a fourth part comprising a filter element, wherein the first part, the second part, the third part and the fourth part are arranged sequentially along the length direction of the smoking article, and the fourth part comprises a lyocell tow containing a plurality of lyocell fibers.

[0007] In some embodiments, the single fineness of the lyocell fibers contained in the above-mentioned lyocell bundle can be 2.22 to 16.67 dtex (2 to 15 deniers), and the total fineness of the lyocell bundle can be 1,111 to 4,444 tex (10,000 to 40,000 deniers).

[0008] In some embodiments, based on the length of the fourth portion of 14 mm, the suction resistance of the fourth portion can be from 7 mmWG to 22 mmWG.

[0009] In some embodiments, based on the length of the fourth portion of 14 mm, the suction resistance of the fourth portion can be from 9.5 mmWG to 19.5 mmWG.

[0010] In some embodiments, the hardness of the fourth part described above can be 60% to 100%.

[0011] In some embodiments, the hardness of the fourth part described above can be 85% to 95%.

[0012] In some embodiments, the third part described above may be a hollow tubular structure.

[0013] In some embodiments, the third part may include at least one of a hollow tubular filter tip and a paper tube made of polylactic acid (PLA) fiber, cellulose acetate fiber or lyocell fiber.

[0014] In another aspect of this application, a system is provided that includes the above-described smoking article and an aerosol generating apparatus for using the smoking article.

[0015] The effects of the invention According to one embodiment of a smoking article, lyocell tow is applied to the filter element of the smoking article to prevent the filter element from melting due to the high temperature of the heat applied to heat the smoking article, effectively reducing the heat sensation generated during the initial inhalation, thereby providing the user with a richer and more improved smoking experience.

[0016] The effects of the technical concept of this disclosure are not limited to those described above. Other effects not mentioned will be clearly understood by those skilled in the art from the following description. Attached Figure Description

[0017] Figures 1 to 4 The figure shows an example of inserting an aerosol-generating article into an aerosol generating apparatus.

[0018] Figure 5 A diagram illustrating a smoking article according to an embodiment. Detailed Implementation

[0019] The preferred embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. The advantages and features of this disclosure, as well as the methods for implementing them, will become apparent from the accompanying drawings and the embodiments described in detail below. However, the technical concept of this disclosure is not limited to the embodiments described below, and can be implemented in various different forms. The following embodiments are only intended to ensure that this disclosure is fully disclosed so that those skilled in the art to which this disclosure pertains can fully understand the scope of this disclosure. The technical concept of this disclosure is defined by the scope of the claims of this disclosure.

[0020] When adding reference numerals to components in all the accompanying drawings, it should be noted that the same reference numerals refer to the same components, even if they are shown in different drawings. Furthermore, in the process of describing this disclosure, detailed descriptions of the relevant prior art components or functions may be omitted if it is believed that such detailed descriptions would obscure the gist of this disclosure.

[0021] Unless otherwise specified, all terms (including technical and scientific terms) used in this specification are to be used in a manner that is commonly understood by one of ordinary skill in the art to which this disclosure pertains. Furthermore, commonly used terms that are defined in dictionaries are not to be ideally or over-interpreted without explicit specific definitions. The terminology used in the following embodiments is for illustrative purposes only and is not intended to limit the scope of this disclosure. In the following embodiments, unless otherwise specified, singular nouns also include plural forms.

[0022] Furthermore, in describing the components of this disclosure, terms such as first, second, A, B, (a), (b) may be used. These terms are used only to distinguish a component from other components, and the nature, order, or sequence of the related components is not limited by these terms. It should be understood that if a component is described as "connected," "combined," or "linked" to another component, it may mean that the component is not only directly "connected," "combined," or "linked" to another component, but also indirectly "connected," "combined," or "linked" via a third component.

[0023] The terms “comprising” and / or “including” as used in this disclosure specify the presence of the described components, steps, operations and / or elements, but do not exclude the presence or addition of one or more other components, steps, operations and / or elements.

[0024] First, some terms used in this specification will be explained.

[0025] In this specification, "smoking article" can refer to any smokeable article or any article that provides a smoking experience, regardless of whether it is based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, or tobacco substitutes. For example, smoking articles can include smokeable articles such as cigarettes, cigars, and cigarillos.

[0026] In this specification, "smoking material" can refer to any type of substance that can be used in smoking products.

[0027] In this specification, the term "user" may be used interchangeably with "consumer".

[0028] In this specification, "upstream" or "upstream direction" can refer to the direction away from the smoker's mouth, while "downstream" or "downstream direction" can refer to the direction closer to the smoker's mouth.

[0029] In this specification, "longitudinal direction" can refer to the direction corresponding to the longitudinal axis of the smoking product. The "longitudinal axis" of the smoking product can refer to an imaginary line extending along the main longitudinal direction of the smoking product. This axis typically extends from one end of the smoking product (e.g., the end of the mouthpiece or filter) to the other end (e.g., the combustion end or heat source end).

[0030] In this specification, the term "Lycell filter" refers to a filter containing or composed of Lycell filaments.

[0031] In this specification, "lyocell bundle" includes or is composed of multiple lyocell fibers. In some embodiments, a lyocell bundle refers to a bundle formed by cross-connecting adjacent lyocell fibers.

[0032] In this specification, "lyocell fiber" may refer to a fiber made from lyocell cellulose. In particular, lyocell fiber may be a fiber made from cellulose derived or primarily derived from wood pulp, especially a semi-synthetic fiber.

[0033] In this specification, "irregular cross section" is defined as a shape whose cross section is not circular but includes multiple protrusions. For example, a cross section having multiple protrusions branching from and / or extending from the center of its cross section can be called an irregular cross section. Here, "protrusion" may refer to a distinct and extended segment or arm extending outward from the central core or joint of the Lyocell fiber cross section.

[0034] In some embodiments, lyocell fibers may have a Y-shaped cross-section including three protrusions branching from and / or extending from the center of the cross-section, a cross-shaped cross-section including four protrusions, and / or a star-shaped cross-section including five or more protrusions, or an O-shaped cross-section, but are not limited thereto.

[0035] In some embodiments, the lyocell fiber may include three or more protrusions that branch from the center and / or the center of the cross section and / or extend therefrom.

[0036] In some embodiments, for use in cigarette filters, the lyocell fibers contained in the lyocell tow may have a Y-shaped cross-section.

[0037] In this specification, "hollow" can refer to a channel that extends along the length direction.

[0038] In this specification, "consisting of an element..." can mean that the element is included or constitutes the element.

[0039] In this specification, the term "tubular rod" as a filter rod can refer to a filter rod with a hollow interior, while a filter rod without a hollow interior can be called a "cylindrical rod".

[0040] In this specification, the term "recess-type bar" as a filter bar can refer to a filter bar that includes one or more pores.

[0041] In this specification, the wrapping paper (e.g., roll paper) may cover at least a portion of the surrounding surface of the various parts and / or structures of a smoking article along its longitudinal axis.

[0042] In this specification, "basic weight" refers to the mass per unit area of ​​the roll and / or wrapping paper. The basic weight of the roll and / or wrapping paper can be determined by measuring the mass and area of ​​the roll and / or wrapping paper and dividing the mass by the area. The unit of basic weight can be gsm (grams per square meter), i.e., g / m².

[0043] In this specification, the “monofilament” of a lyocell bundle or cellulose acetate bundle refers to the fineness of the monofilament separated from the multifilament of the lyocell or cellulose acetate fibers that constitute the lyocell bundle or cellulose acetate bundle.

[0044] In this specification, the “total fineness” of a lyocell tow or cellulose acetate tow refers to the fineness of the multi-strand filaments of the lyocell or cellulose acetate fibers that make up the lyocell tow or cellulose acetate tow.

[0045] In this specification, the hardness of each part and / or structure (e.g., part four) of a smoking product refers to a numerical value representing the degree to which the diameter of the object is maintained when pressed with a horizontal force perpendicular to the object's length. This value can be a percentage of the ratio between the diameter of the object after the force is applied and the diameter of the object before the force is applied. For example, the hardness (%) of the object can be calculated using the following formula: (Da) / D × 100%, where D is the diameter of the object and a is the distance the object descends (i.e., is pressed down) under the action of a 300g weight. Measurements required to calculate the above hardness can be obtained using, for example, DHT 200 from Filtrona. TM Equipment acquired. When measuring hardness, the force applied to the object can be set to be equivalent to the force actually applied by a user to the smoking product (e.g., gripping).

[0046] According to one aspect of the invention, the filter of a smoking article can capture at least a portion of the smoke components generated during the use of the smoking article. In some embodiments, the filter of the smoking article can capture particulate matter (total particulate matter, hereinafter referred to as "TPM") comprising at least a portion of at least one of nicotine (hereinafter referred to as "Nic"), tar (hereinafter referred to as "PG"), and glycerin (hereinafter referred to as "Gly") contained in the smoke components generated when smoking with the smoking article.

[0047] In this specification, "suction resistance" refers to the static pressure difference between the two ends of the sample when airflow passes through it. In this specification, "PDC" refers to the suction resistance value measured with the media section open, the filter nozzle perforation closed, and external air prevented from entering, while "PDO" refers to the suction resistance value measured with the media section open, the filter nozzle perforation not closed, and external air allowed to enter. For example, suction resistance can be measured using the method specified in ISO standard 6565:2015. According to ISO standard 6565:2015, suction resistance is the static pressure difference between the two ends of the sample measured under normal conditions (22±2℃, relative humidity 60±5%) when airflow exits from the outlet end at a volumetric flow rate of 17.5 mm / s.

[0048] In this specification, organic acid refers to the general term for organic compounds that are acidic.

[0049] In some embodiments, room temperature may refer to 20°C to 25°C.

[0050] In this specification, unless a separate physical quantity is specified, the percentage of a component and the proportion of a component represent the weight percentage and the weight proportion of the component, respectively.

[0051] In this specification, "puff" can refer to the act of inhaling or introducing air through a smoking article used to generate and inhale smoke or vapor. "Number of puffs" can refer to the total number of inhalation or introduction actions during the use of the smoking article. Alternatively or additionally, the number of puffs can represent the maximum number of inhalation or introduction actions that the smoking article can provide before it is fully consumed or its function is discontinued.

[0052] In this specification, the HC (Health Canada) conditions can be defined as a puff volume of 55 mL per aspiration, a puff frequency of once every 30 seconds, and a puff duration of 2 seconds. Specifically, the HC conditions can be measured with the perforated portion of the filter tip sealed. When measuring under HC conditions, the number of aspirations can be up to 9.

[0053] In this specification, the "ventilation rate (hereinafter referred to as "Vent")" of a smoking product can be defined as the percentage ratio between the total volumetric airflow rate (e.g., ml / s) entering the unburned or unheated smoking product without passing through the front end region (i.e., the upstream end in the length direction) and the total volumetric airflow rate (e.g., ml / s) exiting the smoking product (i.e., the downstream end in the length direction). For example, the ventilation rate can be measured according to ISO 9512:2019. For example, the total volumetric airflow rate entering the unburned or unheated smoking product without passing through the front end region can be the total volumetric airflow rate entering along a direction perpendicular to the length of the smoking product. For example, the total volumetric airflow rate entering the unburned or unheated smoking product without passing through the front end region can be the total volumetric airflow rate entering the smoking product through the cigarette paper.

[0054] The composition of total particulate matter (TPM) in the captured flue gas can be analyzed using gas chromatography-mass spectrometry (GC / MS). For example, for tar or nicotine, a Cambridge filter pad (CFP) for capturing the flue gas components can be soaked in isopropyl alcohol (IPA) for a period of time (e.g., 20 minutes to 16 hours), while for PG (propylene glycol) and Gly (glycerol), the Cambridge filter pad (CFP) can be soaked in methanol for a period of time (e.g., 2 hours to 16 hours). After processing with a shaking device and removing impurities through a polytetrafluoroethylene (PTFE) syringe filter, the composition of total particulate matter (TPM) in the captured flue gas can be measured using a GC / MS device. In particular, the soaking time can be more than 20 minutes for tar or nicotine, and more than 2 hours for PG and Gly.

[0055] The amount of components (especially nicotine) remaining inside the filter tip (especially a Lyocell filter tip and / or Lyocell tow) and / or segments of a cigarette stick after smoking can be measured by immersing the cigarette stick, filter tip, and / or segments in water after smoking to extract the residual components (especially nicotine), followed by analysis using a GC / MS instrument. In this case, the cigarette stick, filter tip, and / or segments are immersed in a container of distilled water overnight (e.g., 12 to 16 hours), and the resulting solution containing the extracted components can then be used for GC / MS analysis. In particular, the immersion time can be 16 hours.

[0056] The aforementioned GC / MS equipment may be, for example, a measurement device from Agilent Technologies.

[0057] In this manual, "mmWG" refers to a pressure unit, which means "mmH2O".

[0058] In the following, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0059] In this specification, "tobacco element" refers to an element containing tobacco material.

[0060] In this specification, "tobacco material" means any material containing components derived from tobacco leaves.

[0061] In this specification, "cooling element" refers to an element that cools a substance. For example, a cooling element can cool aerosols generated by an aerosol generating element or a tobacco element.

[0062] In this specification, "filter element" refers to an element that contains filter material. For example, a filter element may include multiple fiber bundles.

[0063] Figures 1 to 4 The figure shows an example of inserting an aerosol-generating article into an aerosol generating apparatus.

[0064] First, refer to Figures 1 to 3 A detailed description of the aerosol generating device is provided.

[0065] Reference Figure 1 The aerosol generating device 100 includes a battery 110, a control unit 120, and a heater 130. (See reference...) Figure 2 and Figure 3 The aerosol generating apparatus 100 also includes a vaporizer 140. In particular, the smoking article 200 can be inserted into the internal space of the aerosol generating apparatus 100.

[0066] Figures 1 to 3 The aerosol generating apparatus 100 shown contains components relevant to this embodiment. Therefore, those skilled in the art related to this embodiment will understand that, in addition to… Figures 1 to 3 In addition to the components shown, other general-purpose components may also be included in the aerosol generating apparatus 100.

[0067] Furthermore, despite Figure 2 and Figure 3 The aerosol generating apparatus 100 shown includes a heater 130, but the heater 130 may be omitted if necessary. In some embodiments, the aerosol generating apparatus 100 does not include a heater. In some embodiments, the battery 110, control unit 120, and vaporizer 140 are arranged sequentially along the length of the smoking article 200, i.e., in a row.

[0068] exist Figure 1 The image shows the battery 110, control unit 120, and heater 130 arranged in a row. In some embodiments, the battery 110, control unit 120, and heater 130 are arranged sequentially along the length of the smoking article 200. Furthermore, Figure 2 The battery 110, control unit 120, vaporizer 140, and heater 130 are arranged in a row along the length of the smoking product 200. Additionally, Figure 3 The vaporizer 140 and heater 130 are shown in parallel arrangement. However, the internal structure of the aerosol generating device 100 is not limited to this. Figures 1 to 3 The structure shown. In other words, depending on the design of the aerosol generating device 100, the arrangement of the battery 110, control unit 120, heater 130 and vaporizer 140 can be different.

[0069] When the smoking article 200 is inserted into the aerosol generating device 100, the aerosol generating device 100 can generate aerosol from the smoking article 200 and / or the vaporizer 140 by activating the heater 130 and / or the vaporizer 140. The aerosol generated by the heater 130 and / or the vaporizer 140 is delivered to the user through the smoking article 200.

[0070] If necessary, the aerosol generating device 100 can heat the heater 130 even if the smoking product 200 is not inserted into the aerosol generating device 100.

[0071] Battery 110 supplies power to operate the aerosol generating device 100. For example, battery 110 can supply power for heating the heater 130 and / or the vaporizer 140, and for operating the control unit 120. In particular, battery 110 can also provide power for operating displays, sensors, motors, etc., installed on the aerosol generating device 100.

[0072] The control unit 120 provides overall control over the operation of the aerosol generating device 100. Specifically, the control unit 120 controls not only the operation of the battery 110, heater 130, and vaporizer 140, but also the operation of other components included in the aerosol generating device 100. In particular, the control unit 120 can check the status of each component of the aerosol generating device 100, thereby determining whether the aerosol generating device 100 is in an operational state.

[0073] The control unit 120 includes at least one processor. The processor can be implemented using multiple logic gate arrays, or it can be implemented using a combination of a general-purpose microprocessor and a memory storing a program executable by the microprocessor. Furthermore, those skilled in the art will understand that the control unit can be implemented as other types of hardware.

[0074] The heater 130 can be heated by electricity supplied from the battery 110. For example, when the smoking article 200 is inserted into the aerosol generating device 100, the heater 130 can be located outside the smoking article 200. Therefore, the heated heater 130 can raise the temperature of the aerosol generating substance inside the smoking article 200.

[0075] Heater 130 may be a resistance heater. For example, heater 130 may include a conductive rail through which current flows, and heater 130 is heated. However, heater 130 is not limited to the above example; any heater capable of heating to a desired temperature may be applicable. Here, the desired temperature may be preset in the aerosol generating device 100, or it may be set by the user.

[0076] On the other hand, as another example, heater 130 can be an induction heating heater. Specifically, heater 130 may include a conductive coil for heating the aerosol generating device by induction heating, and the aerosol generating device may include an inductor capable of being heated by the induction heating heater.

[0077] For example, heater 130 may include tubular heating elements, plate heating elements, needle heating elements and / or rod heating elements, which, depending on the shape of the heating elements, can heat the interior and / or exterior of the smoking article 200.

[0078] In particular, a plurality of heaters 130 may be arranged in the aerosol generating apparatus 100. In this case, the plurality of heaters 130 may be arranged either inserted inside the smoking article 200 or arranged outside the smoking article 200. Specifically, a portion of the plurality of heaters 130 may be arranged inserted inside the smoking article 200, while the remaining heaters may be arranged outside the smoking article 200. In some embodiments, the heaters 130 may heat both the interior and exterior of the smoking article 200. Furthermore, the shape of the heaters 130 is not limited to... Figures 1 to 3 The shape shown can be manufactured in various shapes. In some embodiments, heater 130 may include a resistance heater and an induction heater.

[0079] The vaporizer 140 can generate an aerosol by heating a liquid composition, and the generated aerosol can be delivered to a user through a smoking article 200. In other words, the aerosol generated by the vaporizer 140 can move along the airflow path of the aerosol generating device 100, and the airflow path can be configured such that the aerosol generated by the vaporizer 140 is delivered to the user through the smoking article 200.

[0080] For example, the vaporizer 140 may include a liquid storage chamber, a liquid delivery device, and a heating element, but is not limited thereto. For example, the liquid storage chamber, the liquid delivery device, and the heating element may be arranged as independent modules in the aerosol generating device 100.

[0081] The liquid reservoir can store a liquid composition. For example, the liquid composition may be a liquid containing tobacco-containing material with volatile tobacco flavoring components, or alternatively or additionally, a liquid containing non-tobacco-containing material. The liquid reservoir may be made detachable from or installable on the vaporizer 140, or may be integrally formed with the vaporizer 140.

[0082] For example, the liquid composition may include water, solvent, ethanol, plant extracts, fragrances, flavorings, and / or vitamin mixtures. Fragrances may include, but are not limited to, menthol, peppermint, spearmint oil, various and / or fruity flavorings, etc. Flavorings may include ingredients capable of providing the user with a variety of aromas and / or flavors. Vitamin mixtures may be, but are not limited to, a mixture of at least one of vitamins A, B, C, and E. In particular, the liquid composition may contain aerosol forming agents such as glycerin and propylene glycol.

[0083] A liquid delivery device can deliver a liquid composition from a storage chamber to a heating element. For example, the liquid delivery device can be a wick made of materials such as cotton fiber, ceramic fiber, glass fiber, or / or porous ceramic, but is not limited to these.

[0084] A heating element is a component used to heat a liquid composition conveyed by a liquid conveying device. For example, a heating element may include, but is not limited to, a hot metal wire, a hot metal plate, and / or a ceramic heater. In particular, the heating element may be made of conductive wire such as a nichrome wire, or may be arranged in a structure wound around the liquid conveying device. The heating element can be heated by an electric current supply, and the liquid composition can be heated by transferring heat to the liquid composition in contact with the heating element. As a result, an aerosol can be generated.

[0085] For example, the vaporizer 140 may be referred to as a cartomizer or atomizer, but is not limited to these terms.

[0086] On the other hand, in addition to the battery 110, control unit 120, heater 130, and vaporizer 140, the aerosol generating device 100 may also include other general components. For example, the aerosol generating device 100 may include a display screen capable of outputting visual information and / or a motor for outputting tactile information. In particular, the aerosol generating device 100 may include at least one sensor (a suction sensor, a temperature sensor, and / or an aerosol generating article insertion detection sensor, etc.). In particular, the aerosol generating device 100 may also be configured to allow external air to flow in or internal gas to be discharged even when the smoking article 200 is inserted.

[0087] Despite Figures 1 to 3 Although not shown, the aerosol generating device 100 can also be configured as a system with a separate support. For example, the support can be used to charge the battery 110 of the aerosol generating device 100. Alternatively or additionally, the heater 130 can be heated while the support and the aerosol generating device 100 are combined.

[0088] The smoking article 200 may be similar to a conventional combustible cigarette. For example, the smoking article 200 may be divided into a first part including aerosol-generating substances and a second part including a filter tip, etc. Optionally, the second part of the smoking article 200 may also contain aerosol-generating substances. For example, aerosol-generating substances in the form of particles and / or capsules may be inserted into the first part and optionally into the second part.

[0089] The entire first part can be inserted into the aerosol generating device 100, while the second part can be exposed to the outside. Alternatively, only a portion of the first part can be inserted into the aerosol generating device 100, or the entire first part and a portion of the second part can be inserted into the aerosol generating device 100. The user can inhale the aerosol while holding the second part in their mouth. At this time, aerosol is generated when outside air passes through the first part, and the generated aerosol is delivered to the user's mouth through the second part.

[0090] In some embodiments, external air can be introduced through at least one air passage formed in the aerosol generating device 100. For example, the opening and / or size of the air passage formed in the aerosol generating device 100 can be adjusted by the user. Therefore, the user can adjust the amount of vaporization, the smoking sensation, etc. As another example, external air can be introduced into the interior of the smoking article 200 through at least one hole formed on the surface of the smoking article 200.

[0091] Next, refer to Figure 4 , Figure 4 An example of an aerosol generating apparatus employing an induction heating method is shown.

[0092] Reference Figure 4 The aerosol generating device 100 includes a battery 110, a control unit 120, a coil C, and an inductor S. In particular, the hollow V of the aerosol generating device 100 can accommodate at least a portion of the smoking article 200. Figure 4 The smoking device 200, battery 110, and control unit 120 in the middle can correspond to Figures 1 to 3 The smoking device 200, battery 110, and control unit 120 are included. In particular, the coil C and the inductor S may be included in the heater 130. Therefore, repeated descriptions will be omitted here.

[0093] Figure 4 The aerosol generating apparatus 100 shown contains components relevant to this embodiment. Therefore, those skilled in the art will understand that, in addition to... Figure 4 In addition to the components shown, other general-purpose components may also be included in the aerosol generating apparatus 100.

[0094] The coil C can be located around the hollow V. Although in Figure 4 The diagram shows a case where the coil C is wrapped around a hollow V, but the invention is not limited thereto.

[0095] When the smoking product 200 is contained in the hollow V of the aerosol generating device 100, the aerosol generating device 100 can supply power to the coil C, causing the coil C to generate a magnetic field. When the magnetic field generated by the coil C penetrates the inductor S, the inductor S can be heated.

[0096] This induction heating phenomenon is based on Faraday's law of electromagnetic induction. Specifically, when the magnetic field within the inductor S changes, an electric field is generated inside the inductor S, causing eddy currents to flow within it. These eddy currents generate heat within the inductor S that is proportional to the current density and the conductor's resistance.

[0097] The inductor S is heated by eddy currents, which in turn heats the aerosol-generating substances within the smoking product 200, thereby generating aerosols. The aerosols generated from these aerosol-generating substances are then delivered to the user through the smoking product 200.

[0098] Battery 110 can provide power to generate a magnetic field in coil C. Control unit 120 can be electrically connected to coil C.

[0099] The coil C can be a conductive coil that generates a magnetic field using power supplied by the battery 110. The coil C can be arranged to cover at least a portion of the hollow V. The magnetic field generated by the coil C can be applied to an inductor S arranged at the inner end of the hollow V.

[0100] When the magnetic field generated by coil C passes through inductor S, inductor S is heated and may contain metal and / or carbon. For example, inductor S may contain at least one of ferrite, ferromagnetic alloy, stainless steel, and aluminum.

[0101] The inductor S may comprise at least one of the following: graphite, molybdenum, silicon carbide, niobium, nickel alloy, metal film, ceramics such as zirconia, transition metals such as nickel (Ni) and cobalt (Co), and metalloids such as boron (B) and phosphorus (P). However, the inductor S is not limited to the examples described above; any inductor capable of being heated to a desired temperature upon application of a magnetic field is applicable without limitation. Here, the desired temperature may be preset in the aerosol generating apparatus 100, or it may be set by the user.

[0102] When the smoking article 200 is contained within the hollow V of the aerosol generating device 100, the inductor S can be arranged to cover at least a portion of the smoking article 200. Therefore, the heated inductor S can raise the temperature of the aerosol-generating substance within the smoking article 200.

[0103] Although Figure 4 The diagram shows that the inductor S is arranged to cover at least a portion of the aerosol-generating article, but it is not limited thereto. For example, the inductor S may include a tubular heating element, a plate heating element, a needle heating element, and / or a rod heating element, which, depending on the shape of the heating element, can heat the interior and / or exterior of the smoking article 200.

[0104] In particular, a plurality of sensors S can be arranged in the aerosol generating apparatus 100. In this case, the plurality of sensors S can be arranged outside the smoking article 200 or inserted inside it. Specifically, some of the plurality of sensors S can be arranged to be inserted inside the smoking article 200, while the remaining sensors can be arranged outside the smoking article 200. Furthermore, the shape of the sensors S is not limited to... Figure 4 The shape shown can be made into various shapes.

[0105] Figure 5 A diagram illustrating a smoking article according to an embodiment.

[0106] Reference Figure 5The smoking article 200 may include a first portion 210, a second portion 220, a third portion 230, and a fourth portion 240. Specifically, each of the first portion 210, second portion 220, third portion 230, and fourth portion 240 may include an aerosol generating element, a tobacco element, a cooling element, and a filter element. In some embodiments, the first portion 210 may contain an aerosol generating substance, the second portion 220 may contain tobacco material and optionally one or more humectants, the third portion 230 may cool the airflow passing through the first portion 210 and the second portion 220, and the fourth portion 240 may contain filter material. Alternatively, to emphasize the filtering function of the third portion 230 and the fourth portion 240, the third portion 230 may be referred to as a cooling structure 230, and the fourth portion 240 may be referred to as a mouthpiece portion 240.

[0107] Reference Figure 5 The first part 210, the second part 220, the third part 230, and the fourth part 240 can be arranged sequentially along the length of the smoking article 200. Here, the length of the smoking article 200 can be the direction in which the smoking article 200 extends. For example, the length of the smoking article 200 can be from the first part 210 toward the fourth part 240. Therefore, aerosol generated from at least one of the first part 210 and the second part 220 can sequentially pass through the first part 210, the second part 220, the third part 230, and the fourth part 240, thereby forming an airflow that allows the smoker to inhale the aerosol from the fourth part 240.

[0108] Part 210 may include an aerosol generating element. In particular, it may include at least one other additive such as a flavoring agent, humectant, and / or organic acid, and may include a flavoring liquid containing menthol and / or a humectant. Here, the aerosol generating element may include at least one of, for example, glycerol, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. However, this disclosure is not limited to the above examples, and may cover various aerosol generating elements known in the art.

[0109] The first part 210 may include an aerosol generating substrate impregnated with an aerosol generating element. Examples of the aerosol generating substrate may include a rolled (shrunken) sheet, and the aerosol generating element may be included in the first part 210 while impregnated in the rolled sheet. In particular, at least one other additive such as a flavoring agent, humectant, and / or organic acid, and / or a fragrance liquid may be included in the first part 210 while being absorbed by the rolled sheet.

[0110] The rolled sheet can be a sheet made of a polymer material. For example, the polymer material may include at least one of paper, cellulose acetate, and polylactic acid. For example, the rolled sheet may be a paper sheet that does not produce an odor due to heat even when heated at high temperatures. However, the invention is not limited thereto.

[0111] The first portion 210 may extend from the end of the smoking article 200 to a position of approximately 7 mm to approximately 20 mm, and the second portion 220 may extend from the position where the first portion 210 ends to a position of approximately 7 mm to approximately 20 mm. However, these numerical ranges are not necessarily limited thereto, and the lengths of the first portion 210 and the second portion 220, respectively, can be appropriately adjusted within a range easily changed by those skilled in the art. For example, the length of the first portion 210 may be approximately 10 mm, and the length of the second portion may be approximately 12 mm, but is not limited thereto.

[0112] Part 220 may include tobacco elements. Tobacco elements may be specific forms of tobacco material. For example, tobacco elements may be in the form of tobacco slices, tobacco particles, tobacco sheets, tobacco beads, tobacco granules, tobacco powder, and / or tobacco extracts. In particular, tobacco material may include at least one of, for example, tobacco leaves, tobacco veins, expanded tobacco, cut tobacco, reconstituted tobacco, and reconstituted tobacco.

[0113] The third section 230 can cool the airflow passing through the first section 210 and the second section 220. The third section 230 can be made of a polymer material, a biodegradable polymer material, and / or a paper tube filter and has a cooling function. For example, the third section 230 can be made of polylactic acid (PLA) fibers, cellulose acetate fibers, and / or lyocell fibers, and can be a hollow tubular filter and / or paper tube. The hollow part can extend along the length of the third section 230.

[0114] The length and / or diameter of the third portion 230 may vary depending on the shape of the smoking article 200. For example, the length of the third portion 230 may be suitably selected in the range of 7 mm to 20 mm. Preferably, the length of the third portion 230 may be about 12 mm, but is not limited thereto.

[0115] In some embodiments, the outer diameter of the third portion 230 may be approximately 5 mm to 10 mm, preferably 6 mm to 8 mm, more preferably 6.2 mm to 7.8 mm, even more preferably 6.4 mm to 7.6 mm, even more preferably 6.6 mm to 7.4 mm, even more preferably 6.8 mm to 7.2 mm, and even more preferably 7 mm. The inner diameter of the third portion 230 (i.e., the diameter of the hollow portion) may be smaller than the outer diameter, and may take an appropriate value in the range of approximately 2 mm to 5.5 mm, preferably 2.1 mm to 5 mm, even more preferably 2.2 mm to 4.5 mm, and even more preferably 2.5 mm to 4 mm, but is not limited thereto. More preferably, the inner diameter of the third portion 230 may be 3.7 mm to 3.9 mm, or more preferably 3.8 mm, etc., but is not limited thereto.

[0116] The fourth part 240 may include a filter element. The fourth part 240 can cool the aerosol generated by the heater 130 heating the second part 220. Therefore, the user can inhale the aerosol cooled to a suitable temperature. In particular, the fourth part 240 is a mouthpiece that contacts the user's mouth and serves to filter the aerosol that is ultimately delivered from upstream to the user.

[0117] In one embodiment, the fourth portion 240 may be a Lyocell filter tip composed of a Lyocell bundle comprising multiple Lyocell fibers. The length of the fourth portion 240 may be suitably selected in the range of 4 mm to 20 mm. For example, the length of the fourth portion 240 may be approximately 14 mm, but is not limited thereto. On the other hand, there is no limitation on the shape of the fourth portion 240. For example, the fourth portion 240 may be a cylindrical rod or a tubular rod containing a hollow interior. In particular, the fourth portion 240 may be a recessed rod.

[0118] In this invention, the lyocell fibers included in part 240 can be environmentally friendly fibers made from cellulose extracted from wood pulp. The aforementioned lyocell bundles can refer to bundles formed by cross-linking adjacent lyocell fibers.

[0119] In some embodiments, lyocell fibers may have an irregular cross-section. An irregular cross-section is defined as a shape whose cross-section is not circular but includes multiple protrusions. For example, a cross-section with multiple protrusions extending from the center can be referred to as an irregular cross-section.

[0120] In some embodiments, lyocell fibers may have a Y-shaped cross section including three protrusions branching from the center, a cross-shaped cross section including four protrusions, and / or a star-shaped cross section including five or more protrusions, or an O-shaped cross section, but the invention is not limited thereto.

[0121] In some embodiments, the single denier (denier) range of the lyocell fibers included in the fourth portion 240 described above may be 2.22 dtex to 16.67 dtex (2 denier to 15 denier), preferably 2.44 dtex to 15.56 dtex (2.2 denier to 14 denier), more preferably 2.78 dtex to 14.44 dtex (2.5 denier to 13 denier), and even more preferably 3.33 dtex to 13.33 dtex (3 denier to 12 denier). In some embodiments, the fourth portion 240 described above may include lyocell filament bundles with a total denier (total denier) of 1,111 tex to 4,444 tex (10,000 denier to 40,000 denier), preferably 2,222 tex to 4,333 tex (20,000 denier to 39,000 denier), more preferably 2,778 tex to 4,222 tex (25,000 denier to 38,000 denier). In this specification, single fineness refers to the fineness of a fiber expressed as the weight (g) of a single lyocell fiber with a unit length of 9,000 m, and total fineness refers to the fineness of a fiber expressed as the weight (g) of a bundle of fibers with a unit length of 9,000 m.

[0122] In some embodiments, based on a 14mm length of the fourth portion 240, the draw resistance of the fourth portion 240 can be from 7mmWG to 22mmWG, preferably from 8mmWG to 21mmWG, more preferably from 9mmWG to 20mmWG, and even more preferably from 9.5mmWG to 19.5mmWG. In some embodiments, based on a 14mm length of the fourth portion 240, the draw resistance of the fourth portion 240 can be from 10mmWG to 10.5mmWG, 13.5mmWG to 14mmWG, or 18.0mmWG to 18.5mmWG, preferably from 18.2mmWG to 18.3mmWG. With draw resistance within the above ranges, the amount of moisture migration in the aerosol generated during smoking can be reduced, thereby reducing the heat sensation experienced by the smoker during the initial inhalation and improving the removal capacity of nicotine from the aerosol.

[0123] Hardness is a physical property related to the elasticity and resilience of part 240, referring to the degree to which part 240 resists pressure applied in a direction perpendicular to its length. To ensure that the smoking product retains its shape and is easy to use when in use, it is preferable to maintain a certain level of hardness.

[0124] In some embodiments, the hardness of the fourth portion 240 is preferably 60% to 100%, more preferably 70% to 99%, even more preferably 75% or more to 98%, and even more preferably 80% or more to 97%, and even more preferably 85% to 95%, but is not limited thereto. The aforementioned hardness of the fourth portion 240 refers to a numerical value representing the degree to which the diameter of the fourth portion 240 is maintained when pressed with a certain horizontal force in a direction perpendicular to the length of the fourth portion 240. This value can be a percentage of the ratio between the diameter of the fourth portion 240 after the force is applied and the diameter of the fourth portion 240 before the force is applied.

[0125] The perimeter of the cross section of part 240 perpendicular to the length direction of the smoking article 3 can be 14 mm to 25 mm, for example, 22 mm to 23 mm, but is not limited thereto.

[0126] In some embodiments, the fourth portion 240 may further include at least one adhesive dispersed in the lyocell filament bundle. By further including at least one adhesive dispersed in the lyocell filament bundle, the fourth portion 240 can achieve a predetermined hardness.

[0127] The interior of part 240 may contain at least one capsule. The capsule may have a structure in which a solution of contents, including a fragrance, is encapsulated by a thin film. For example, the capsule may have a spherical and / or cylindrical shape.

[0128] The smoking article 200 may further include wrapping paper 250 covering at least a portion of the first portion 210 to the fourth portion 240. In particular, the smoking article 200 may include wrapping paper 250 covering all of the first portion 210 to the fourth portion 240. The wrapping paper 250 may be located as the outermost layer of the smoking article 200, and the wrapping paper 250 may be a single wrapping paper or a combination of multiple wrapping papers.

[0129] In some embodiments, the first portion 210 of the smoking article 200 may include a curled, pleated sheet containing aerosol-generating substances, the second portion 220 may include reconstituted tobacco shreds as tobacco material and glycerin as a humectant, the third portion 230 may include cellulose acetate containing a hollow interior, and the fourth portion 240 may be composed of a tow of lyocell fibers, but this disclosure is not necessarily limited thereto.

[0130] The construction and effects of the present invention will be described in more detail below by way of embodiments and comparative examples. However, these embodiments are provided only to illustrate one or more specific instances, and the scope of the invention is not limited by these embodiments.

[0131] Example 1 Manufactured according to the conditions shown in Example 1 in Table 1, as follows: Figure 5 The smoking article shown includes a first part made of paper with a length of 10 mm and containing an aerosol generating element, a second part with a length of 12 mm and containing tobacco material, a third part with a length of 12 mm and an inner diameter of 3.8 mm and made of cellulose acetate tube, and a fourth part with a length of 14 mm and made of lyocell filament bundle.

[0132] In this specification, unless otherwise stated, PDC refers to the suction resistance value measured with the perforation formed in any one of the second part open, the first part, the third part, and the fourth part closed and preventing the entry of external air, while PDO refers to the suction resistance value measured with the second part open, the perforation formed in any one of the first part, the third part, and the fourth part not closed and allowing the entry of external air.

[0133] Comparative Example 1 Except for the fourth part, which was manufactured using cellulose acetate tow, the other parts were manufactured under the same conditions as in Example 1, as shown in Comparative Example 1 in Table 1.

[0134] Table 1

[0135] Experimental Example 1. Temperature measurement of the mainstream flue gas in each draw, based on the material in Part 4. To compare the mainstream smoke temperature of each puff of the smoking products of Example 1 and Comparative Example 1, the second part of the smoking products of Example 1 and Comparative Example 1 was heated by external heating at a heating temperature of 190°C to 280°C, and the temperature of the generated mainstream smoke was measured. The results are shown in Table 2 below.

[0136] In particular, the experiment was conducted on the smoking products according to Comparative Example 1 and Example 1 in a smoking room with an internal temperature of about 22±2°C and an internal relative humidity of about 60±5% (especially with a temperature of about 21.9°C and a relative humidity of 64.3%), and the smoking conditions were HC conditions (puff volume: 55ml / puff frequency: 30 seconds / puff duration: 2 seconds / puff count: 9 times). For the generated smoke, a thermocouple sensor was placed inside the smoke 5mm from the end of the fourth part of the smoke to measure the temperature of the mainstream smoke.

[0137] Table 2

[0138] Referring to Table 2 above, a comparison of the mainstream smoke temperatures of the smoking products of Example 1 and Comparative Example 1, which have similar physical properties, shows that throughout the entire inhalation process, the mainstream smoke temperature of the smoking product of Example 1 is lower than that of the smoking product of Comparative Example 1. During the initial inhalation (especially the first to fourth inhalations), the mainstream smoke temperature of the smoking product of Example 1 is more than 8°C lower than that of the smoking product of Comparative Example 1. This indicates that Lyocell material has superior cooling effects compared to cellulose acetate material, especially exhibiting excellent cooling effects during the initial inhalation process.

[0139] Example 2 Lyocell bundles with a single fiber density of 3.33 dtex (3.0 denier) and a total fiber density of 3,889 tex (35,000 denier) were manufactured.

[0140] Examples 3 to 5 The filter tip (fourth part) containing lyocell filaments from Example 2 was manufactured into a filter tip with a length of 14 mm according to the conditions shown in Examples 3 to 5 in Table 3. Based on the suction resistance of the manufactured filter tip (fourth part), they were named Example 3, Example 4, and Example 5, respectively. The packaging paper used to manufacture the filter tip was an untreated roll of paper with a basis weight of 75 gsm.

[0141] Comparative Example 2 A filter tip containing cellulose acetate tow and with a length of 14 mm was manufactured according to the conditions shown in Comparative Example 2 in Table 3 below (Part 4). The packaging paper used to manufacture the filter tip was an untreated roll of paper with a basis weight of 75 gsm.

[0142] Table 3

[0143] Next, using the filter tips from Examples 3 to 5 and Comparative Example 2 described above, a filter with the following characteristics was manufactured according to the conditions shown in Table 4. Figure 5 The smoking article with the structure shown includes a first part made of paper with a length of 10 mm and containing an aerosol generating element, a second part with a length of 12 mm and containing tobacco material, a third part with a length of 12 mm and an inner diameter of 3.8 mm and made of cellulose acetate tube, and a fourth part with a length of 14 mm, each of Examples 3 to 5 and Comparative Example 2.

[0144] Table 4

[0145] Experimental Example 2. Based on the materials in Part 4 and the analysis of the composition of the flue gas with draw resistance in Part 4. To compare the composition of the smoke from the materials and the draw resistance of the fourth part, the second part of the smoking products according to Examples 3 to 5 and Comparative Example 2 was heated by external heating at a heating temperature of 190°C to 280°C, and the total particulate matter (TPM), nicotine content, and moisture content were measured. The results are shown in Table 5 below.

[0146] In particular, experiments were conducted on the smoking products of Examples 3 to 2 and Comparative Example 2 in a smoking room with an internal temperature of approximately 22 ± 2 °C and an internal relative humidity of approximately 60 ± 5% (specifically, a temperature of approximately 21.9 °C and a relative humidity of 64.3%), under HC conditions (puff volume: 55 ml / puff frequency: 30 seconds / puff duration: 2 seconds / number of puffs: 9). The generated smoke was captured and analyzed after passing through a Cambridge filter (i.e., Cambridge filter pad, CFP). The total particulate matter (TPM) was measured as the change in weight of the Cambridge filter after smoking, relative to the weight of the Cambridge filter before smoking, using the smoking device. Other components were analyzed by gas chromatography (GC) of the captured smoke.

[0147] Table 5

[0148] Referring to Examples 4 and Comparative Example 2, which have similar draw resistance to the smoking products in Part IV of Table 5 above, it can be confirmed that the moisture migration of the smoking product of Example 4 is 18.70 mg, while that of Comparative Example 2 is 19.18 mg. This confirms that the moisture migration of the smoking product of Example 4, composed of lyocell tow, is less than that of the smoking product of Comparative Example 2, composed of cellulose acetate tow. In other words, it can be confirmed that, under similar draw resistance, lyocell material has the advantage of reducing heat sensation during inhalation compared to cellulose acetate material. Furthermore, referring to Examples 3 to 5, which are composed of the same lyocell material, it can be confirmed that the moisture migration of the smoking product of Example 3, which has a higher draw resistance in Part IV, is 17.86 mg, while that of the smoking product of Example 5, which has a lower draw resistance, is 19.54 mg. Therefore, it can be confirmed that the higher the draw resistance, the less moisture migrates in the mainstream smoke, and the better the effect of reducing heat sensation during inhalation. (When the moisture content in the mainstream smoke is high, smokers will feel a stronger heat sensation at the same temperature.) Experimental Example 3. Nicotine removal capacity based on the materials and absorption resistance in Part 4. Next, in order to compare the nicotine removal performance of the fourth part based on the draw resistance, the second part of the smoking products according to Examples 3 to 5 and Comparative Example 2 was heated by external heating at a heating temperature of 190°C to 280°C, and the amount of nicotine in the migrated aerosol and the amount of nicotine remaining inside the fourth part (filter) were measured. The measurement results were then substituted into the following mathematical formula 1 to calculate the nicotine removal capacity of the filter, and substituted into mathematical formula 2 to calculate the nicotine migration rate of the filter. The final calculation results are listed in Table 6 below.

[0149] The amount of nicotine in the aerosol was determined by capturing the smoke generated from the smoking product of Experimental Example 2 using a Cambridge filter (i.e., Cambridge filter pad (CFP)) and analyzing it using gas chromatography (GC). The amount of nicotine remaining inside the fourth part (filter tip) was extracted by immersing the fourth part (filter tip) in water after smoking and then analyzing it using a GC / MS device. The fourth part (filter tip) was immersed overnight in a container of distilled water, and the resulting solution containing the extracted components was then used for GC / MS analysis.

[0150] [Mathematical Expression 1] Removal capacity (%) = (Residual amount in part 4 (filter tip) after smoking) / (Residual amount in part 4 (filter tip) after smoking + Aerosol migration after smoking) × 100 [Mathematical Expression 2] Migration rate (%) = 100 (%) - Removal capacity (%) Table 6

[0151] Referring to Table 6 above, it can be confirmed that compared to the filter tip of Comparative Example 2, whose fourth part is composed of cellulose acetate tow, the filter tips of Examples 3 to 5, whose fourth part is composed of lyocell tow, all have excellent nicotine removal capabilities. Furthermore, when the fourth part is composed of lyocell tow, due to differences in suction resistance, the filter tip of Example 3, with higher suction resistance, has a nicotine removal capability of 55.5%, while the filter tip of Example 5, with lower suction resistance, has a nicotine removal capability of 41.7%. Therefore, it can be confirmed that the higher the suction resistance, the better the nicotine removal capability.

[0152] While embodiments of the present disclosure have been described above with reference to the accompanying drawings, those skilled in the art will understand that other specific forms can be implemented without altering the technical concept or essential features of the present disclosure. Therefore, it should be understood that the above embodiments are exemplary and non-limiting in all respects. The scope of protection of this disclosure should be determined by the claims, and all interpretations of the technical spirit within the equivalent scope should fall within the scope of the technical concept defined by this disclosure.

Claims

1. A smoking product, characterized in that, include: The first part includes an aerosol generating substrate impregnated with aerosol generating elements. The second part includes tobacco components. The third part includes cooling elements, and The fourth part includes the filter element; The first part, the second part, the third part, and the fourth part are arranged sequentially along the length of the smoking product. The fourth part includes a bundle of Lyocell fibers containing multiple Lyocell fibers.

2. The smoking product according to claim 1, characterized in that, The Lyocell bundle contains Lyocell fibers with a denier of 2 to 15, and the total denier of the Lyocell bundle is 10,000 to 40,000.

3. The smoking product according to claim 1, characterized in that, Based on the length of the fourth part of 14mm, the suction resistance of the fourth part is 7mmWG to 22mmWG.

4. The smoking article according to claim 3, characterized in that, Based on the length of the fourth part of 14 mm, the suction resistance of the fourth part is 9.5 mmWG to 19.5 mmWG.

5. The smoking article according to claim 1, characterized in that, The hardness of the fourth part is 60% to 100%.

6. The smoking article according to claim 5, characterized in that, The hardness of the fourth part is 85% to 95%.

7. The smoking article according to claim 1, characterized in that, The third part is a hollow tubular structure.

8. The smoking article according to claim 7, characterized in that, The third part includes at least one of a hollow tubular filter tip and a paper tube, which is made of polylactic acid fiber, cellulose acetate fiber or lyocell fiber.

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