A smoking article comprising lyocell tow

Abstract

The present invention provides a smoking article. The smoking article includes: a cigarette stick; a front plug disposed on one side of the cigarette stick; a first section disposed on the opposite side of the cigarette stick; and a second section disposed on the opposite side of the first section; the second section includes a tow of Lyocell fibers comprising a plurality of Lyocell fibers.

Description

Technical Field

[0001] This invention relates to a smoking article in which lyocell fiber is applied to the second section of the filter portion constituting the smoking article, thereby preventing the fiber in the second section from melting and effectively reducing the heat generated during the initial inhale, thus 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 second section of the filter portion constituting the smoking article, thereby preventing the tow in the second section from melting and 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 addressing the aforementioned problems, comprises: a cigarette stick; a front plug disposed on one side of the cigarette stick; a first section disposed on the opposite side of the cigarette stick, which is the opposite side of the first section; and a second section disposed on the opposite side of the first section; the second section comprising a tow of Lyocell fibers comprising a plurality of Lyocell fibers. In some embodiments, the front plug, cigarette stick, first section, and second section may be arranged sequentially along the length of the smoking article.

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

[0008] In some embodiments, based on a length of 14 mm for the second segment, the suction resistance of the second segment can be from 5 mmWG to 20 mmWG.

[0009] In some embodiments, based on a length of 14 mm for the second segment, the suction resistance of the second segment can be from 8 mmWG to 17 mmWG.

[0010] In some embodiments, the front plug may include at least one of cellulose acetate and lyocell.

[0011] In some embodiments, the front plug may include at least one channel internally. At least one channel may extend in the length direction. At least one channel may extend in the length direction parallel to the length axis.

[0012] In some embodiments, the hardness of the second segment can be 60% to 100%.

[0013] In some embodiments, the hardness of the second segment can be 85% to 95%.

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

[0015] The effects of the invention According to one embodiment of the smoking article, lyocell tow is applied to the second section of the filter portion constituting the smoking article, thereby preventing the tow in the second section from melting and effectively reducing the heat 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 3 The figure shows an example of inserting a smoking article into an aerosol generating device.

[0018] Figure 4 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, the cross-sectional shape of the channel formed inside the front plug is described as "trilobite," "quadrlobite," or "multilobite," referring to a cross-section in which three, four, or more protrusions branch off from and / or extend from the center of the channel cross-section. Here, "protrusion" may refer to a distinct and extended segment or arm extending outward from the central core or junction of the channel cross-section.

[0039] In this specification, "consisting of an element..." can mean that the element is included or constitutes the element.

[0040] 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".

[0041] In this specification, the term "recess-type bar" as a filter bar can refer to a filter bar that includes one or more pores.

[0042] In this specification, the term "recess filter" as used for a filter tip can refer to a filter tip that includes one or more pores.

[0043] In this specification, "wrapping" of a smoking article by wrapper can refer to the wrapper covering at least a portion of the periphery of the parts, sections and / or structures of the smoking article along its length axis.

[0044] In this specification, "basic weight" refers to the mass per unit area of ​​the paper roll and / or wrapping paper. The basic weight of the paper roll and / or wrapping paper can be determined by measuring the mass and area of ​​the paper 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.

[0045] In this instruction manual, "rigid roll paper" refers to roll paper with a basis weight of a certain value or higher.

[0046] In some embodiments, "oil-resistant roll paper" can refer to roll paper whose surface has been treated with oil resistance, and "oil-resistant rigid roll paper" can refer to rigid roll paper whose surface has been treated with oil resistance.

[0047] In some embodiments, "general roll paper" may refer to roll paper whose surface has not been treated with oil resistance, and "general hard roll paper" may refer to hard roll paper whose surface has not been treated with oil resistance.

[0048] 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.

[0049] 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.

[0050] In this specification, the hardness of each part, segment, and / or structure (e.g., the second segment) of a smoking article 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 length of the object. This value can be a percentage of the diameter of the object after the application of force, relative to the diameter before the force was 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 hardness can be obtained using, for example, DHT 200 from Filtrona. TMThe equipment is obtained. When measuring hardness, the force applied to the object can be set to be equivalent to the force that a user actually applies to the smoking product (e.g., holding it).

[0051] 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.

[0052] 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.

[0053] In this specification, organic acid refers to the general term for organic compounds that are acidic.

[0054] In some embodiments, room temperature may refer to 20°C to 25°C.

[0055] In this specification, unless a separate physical quantity is expressed, the percentage of a component and the proportion of a component represent the weight percentage and the weight proportion of the component, respectively.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] The GC / MS device may be, for example, a measurement device from Agilent Technologies.

[0061] In this manual, "mmWG" refers to a pressure unit, which means "mmH2O".

[0062] In the following, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0063] Figures 1 to 3 The figure shows an example of inserting a smoking article into an aerosol generating device.

[0064] Reference Figure 1 The aerosol generating device 1 includes a battery 11, a control unit 12, and a heater 13. (See reference...) Figure 2 and Figure 3 The aerosol generating device 1 also includes a vaporizer 14. Furthermore, the smoking product 3 can be inserted into the internal space of the aerosol generating device 1.

[0065] Figures 1 to 3 The aerosol generating apparatus 1 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 device 1.

[0066] Furthermore, despite Figure 2 and Figure 3 The aerosol generating device 1 shown includes a heater 13, but the heater 13 may be omitted if necessary. In some embodiments, the aerosol generating device 1 does not include a heater. In some embodiments, the battery 11, control unit 12, and vaporizer 14 are arranged sequentially along the length of the smoking article 3, i.e., in a row.

[0067] exist Figure 1 The image shows the battery 11, control unit 12, and heater 13 arranged in a row. In some embodiments, the battery 11, control unit 12, and heater 13 are arranged sequentially along the length of the smoking product 3. Furthermore, Figure 2 The battery 11, control unit 12, vaporizer 14, and heater 13 are shown arranged in a row along the length of the smoking product 3. Additionally, Figure 3 The vaporizer 14 and heater 13 are shown in parallel arrangement. However, the internal structure of the aerosol generating device 1 is not limited to... Figures 1 to 3 The structure shown. In other words, depending on the design of the aerosol generating device 1, the arrangement of the battery 11, control unit 12, heater 13 and vaporizer 14 can be different.

[0068] When the smoking product 3 is inserted into the aerosol generating device 1, the aerosol generating device 1 can generate aerosol by activating the heater 13 and / or the vaporizer 14. The aerosol generated by the heater 13 and / or the vaporizer 14 is delivered to the user through the smoking product 3.

[0069] If necessary, the aerosol generating device 1 can heat the heater 13 even if the smoking product 3 is not inserted into the aerosol generating device 1.

[0070] Battery 11 supplies the power required for the operation of aerosol generating device 1. For example, battery 11 can supply power for heating heater 13 and / or vaporizer 14, and for the operation of control unit 12. In particular, battery 11 can also provide the power required for the operation of displays, sensors, motors, etc., installed on aerosol generating device 1.

[0071] The control unit 12 provides overall control over the operation of the aerosol generating device 1. Specifically, the control unit 12 controls not only the operation of the battery 11, heater 13, and vaporizer 14, but also the operation of other components included in the aerosol generating device 1. In particular, the control unit 12 can confirm the status of each component of the aerosol generating device 1, thereby determining whether the aerosol generating device 1 is in an operational state.

[0072] The control unit 12 includes at least one processor. The processor can be implemented using a plurality of logic gate arrays, or it can be implemented using a combination of a general-purpose microprocessor and a memory storing a program that can be executed by the microprocessor. Furthermore, those skilled in the art to which this embodiment pertains will understand that the control unit can be implemented as other types of hardware.

[0073] The heater 13 can be heated by electricity 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. Therefore, the heated heater 13 can raise the temperature of the aerosol generating substance inside the smoking article 3.

[0074] Heater 13 can be a resistance heater. For example, heater 13 may include a conductive track through which current flows, and heater 13 is heated. However, heater 13 is not limited to the above example; any heater capable of heating to the desired temperature is applicable. Here, the desired temperature can be preset in the aerosol generating device 1, or it can be set by the user.

[0075] On the other hand, as another example, heater 13 can be an induction heating heater. Specifically, heater 13 may include a conductive coil for heating the smoking article 3 by induction heating, and the smoking article 3 may include a sensor capable of being heated by the induction heating heater.

[0076] For example, heater 13 may include tubular heating elements, plate heating elements, needle heating elements and / or rod heating elements, which can heat the interior and / or exterior of smoking article 3 depending on the shape of the heating elements.

[0077] In particular, the aerosol generating apparatus 1 may include a plurality of heaters 13. These heaters 13 may be arranged either inside the smoking article 3 or outside the smoking article 3. Specifically, a portion of the heaters 13 may be inserted inside the smoking article 3, while the remaining heaters may be arranged outside the smoking article 3. In some embodiments, the heaters 13 can heat both the interior and exterior of the smoking article 3. Furthermore, the shape of the heaters 13 is not limited to... Figures 1 to 3 The shape shown can be manufactured in various shapes. In some embodiments, heater 13 may include a resistance heater and an induction heater.

[0078] The vaporizer 14 generates an aerosol by heating the liquid composition, and the generated aerosol can be delivered to the user through the smoking article 3. In other words, the aerosol generated by the vaporizer 14 can move along the airflow path of the aerosol generating device 1, and the airflow path can be configured such that the aerosol generated by the vaporizer 14 passes through the smoking article 3 and is delivered to the user. The vaporizer 14 generates an aerosol by heating the liquid composition and releases the aerosol toward the smoking article, causing it to pass through the smoking article inserted into the insertion part of the smoking article.

[0079] For example, the vaporizer 14 may include a liquid storage chamber, a liquid delivery unit, and a heating element, but is not limited thereto. For example, the liquid storage chamber, the liquid delivery unit, and the heating element may be arranged as independent modules in the aerosol generating device 1.

[0080] 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 14, or may be integrally formed with the vaporizer 14.

[0081] 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, and / or various fruit flavoring ingredients. 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.

[0082] The liquid delivery unit can deliver the liquid composition in the storage chamber to the heating element. For example, the liquid delivery unit can be a wick such as cotton fiber, ceramic fiber, glass fiber, or / or porous ceramic, but is not limited to this.

[0083] A heating element is a component used to heat a liquid composition conveyed by a liquid delivery unit. For example, a heating element may include, but is not limited to, a metal heating wire, a metal heating plate, and / or a ceramic heater. In particular, the heating element may be constructed of conductive wire such as a nichrome alloy wire, or may be arranged in a structure wound around the liquid delivery unit. 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.

[0084] For example, the vaporizer 14 may be referred to as a cartomizer or atomizer, but is not limited to these terms.

[0085] On the other hand, in addition to the battery 11, control unit 12, heater 13, and vaporizer 14, the aerosol generating device 1 may also include other general components. For example, the aerosol generating device 1 may include a display screen capable of outputting visual information and / or a motor for outputting tactile information. In particular, the aerosol generating device 1 may include at least one sensor (inhalation detection sensor, temperature detection sensor, and / or smoking product insertion detection sensor, etc.). In particular, the aerosol generating device 1 may also be configured to allow external air to flow in or internal gas to be discharged even when the smoking product 3 is inserted.

[0086] Despite Figures 1 to 3 Although not shown, the aerosol generating device 1 can also be configured as a system with a separate support. For example, the support can be used to charge the battery 11 of the aerosol generating device 1. Alternatively or additionally, the heater 13 can be heated while the support and the aerosol generating device 1 are combined.

[0087] The smoking product 3 can be similar to a general combustible smoking product. For example, the smoking product 3 can be divided into a cigarette stick 31 comprising tobacco material and aerosol-generating substances, and a filter stick 32 comprising a filter tip, etc. Optionally, the filter stick 32 of the smoking product 3 may also contain aerosol-generating substances. For example, aerosol-generating substances in the form of particles and / or capsules may be inserted into the cigarette stick 31, and optionally into a portion of the filter stick 32.

[0088] The entire cigarette stick 31 is inserted into the aerosol generating device 1, while the filter stick 32 is exposed to the outside. Alternatively, only a portion of the cigarette stick 31 can be inserted into the aerosol generating device 1, or both the entire cigarette stick 31 and a portion of the filter stick 32 can be inserted. The user can inhale the aerosol while holding the filter stick 32 in their mouth. At this time, external air passes through the cigarette stick 31 to generate aerosol, and the generated aerosol is delivered to the user's mouth through the filter stick 32.

[0089] In some embodiments, external air can be introduced through at least one air passage formed in the aerosol generating device 1. For example, the opening and / or size of the air passage formed in the aerosol generating device 1 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 3 through at least one hole formed on the surface of the smoking article 3.

[0090] The following will refer to Figure 4 Explain the structure of smoking products.

[0091] Reference Figure 4 The smoking product 3 includes a tobacco stick 31, a filter rod 32, and a front plug 33. The tobacco stick 31 includes tobacco material and aerosol-generating substances. The tobacco material may be tobacco.

[0092] In some embodiments, in a smoking article, the front plug 33, the cigarette stick 31, and the filter rod 32 are arranged sequentially along the length of the smoking article 3.

[0093] The filter rod 32 may be adjacent to one side of the cigarette rod 31 or to the rear end (i.e., the downstream end) of the cigarette rod 31. The filter rod 32 may include a first section 321 for cooling the aerosol and a second section 322 for filtering predetermined components contained in the aerosol. In some embodiments, the first section 321 is disposed between the cigarette rod 31 and the second section 322. In this specification, to emphasize the filtering function of the first section 321 and the second section 322, the first section 321 may be referred to as the cooling structure 321, and the second section 322 may be referred to as the mouthpiece section 322.

[0094] In the cigarette stick 31, the front plug 33 can be located on the side opposite to the filter rod 32 or on the opposite side of one side of the cigarette stick 31, i.e., the other side. The front plug 33 can be adjacent to the front end (i.e., the upstream end) of the cigarette stick 31. The front plug 33 can prevent the cigarette stick 31 from detaching outward and prevent liquefied aerosol from flowing from the cigarette stick 31 into the aerosol generating device during smoking. Figures 1 to 3 (Figure 1 in the figure).

[0095] The smoking product 3 can be wrapped with at least one wrapping paper 35. The wrapping paper 35 can cover the smoking product 3. In some embodiments, the smoking product 3 can be wrapped by covering at least a portion of the smoking product 3 with at least one wrapping paper 35. For example, the front plug 33 can be wrapped with a first wrapping paper 351, the cigarette stick 31 can be wrapped with a second wrapping paper 352, the first segment 321 can be wrapped with a third wrapping paper 353, and the second segment 322 can be wrapped with a fourth wrapping paper 354. Alternatively, the entire smoking product 3 can be rewrapped with a fifth wrapping paper 355. That is, the entire smoking product 3 wrapped with at least one of the first to third wrapping papers can be further wrapped with a fifth wrapping paper 355. The fifth wrapping paper 355 can be referred to as the outer wrapping paper, while the first wrapping paper 351, the second wrapping paper 352, the third wrapping paper 353, and the fourth wrapping paper 354 wrapped by the fifth wrapping paper 355 can be referred to as the inner wrapping paper.

[0096] The diameter of the smoking article 3 can be in the range of 5 mm to 9 mm, but is not limited thereto. For example, the length of the front plug 33 can be about 4 mm to 20 mm (e.g., 7 mm), the length of the tobacco stick 31 can be about 13 mm to 17 mm (e.g., 15 mm), the length of the first section 321 can be about 7 mm to 20 mm (e.g., 12 mm), and the length of the second section 322 can be about 4 mm to 20 mm (e.g., 14 mm), but is not limited thereto.

[0097] For example, the cigarette stick 31 may contain at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol as an aerosol-generating substance, but is not limited thereto. In particular, the cigarette stick 31 may contain at least one other additive such as a flavoring agent, a humectant, and / or an organic acid. Specifically, a flavoring liquid including menthol and / or a humectant may be added to the cigarette stick 31. In particular, the flavoring liquid such as menthol and / or a humectant can be added by spraying it onto the cigarette stick 31.

[0098] The tobacco stick 31 can be manufactured in various forms. For example, the tobacco stick 31 can be made in sheet form, or alternatively or additionally, in strand form. Alternatively or additionally, the tobacco stick 31 can be made from tobacco shreds obtained by shredding tobacco sheets. In some embodiments, the tobacco stick 31 can be made from tobacco shreds and tobacco shreds obtained by shredding tobacco sheets. In particular, the tobacco stick 31 can be made to include at least one of tobacco particles, tobacco sheets, tobacco beads, tobacco granules, and tobacco powder. When the tobacco stick 31 includes tobacco particles, etc., it may also include paper and / or lyocell tow and / or cellulose acetate tow for holding the tobacco particles, etc.

[0099] The shape of the filter rod 32 is not limited. For example, the filter rod 32 can be a cylindrical rod or a tubular rod with a hollow interior. In addition, the filter rod 32 can be a concave rod. If the filter rod 32 is composed of multiple segments, at least one of the segments can be made to have a shape different from the remaining ends.

[0100] The following details each section of filter rod 32.

[0101] The first section 321 of the filter rod 32 can cool the aerosol generated by the heater 13 heating the smoke rod 31. Therefore, the user can inhale the aerosol cooled to an appropriate temperature.

[0102] In some embodiments, the first segment 321 of the filter rod 32 may be a cellulose acetate filter, a paper tube, and / or a lyocell filter composed of a lyocell tow containing multiple 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 containing a hollow interior. The hollow portion may extend along the length direction of the first segment 321. The hollow portion is located at the center of a cross-section perpendicular to the length direction of the first segment 321 and may extend along the length direction of the first segment 321. The hollow portion and the first segment 321 may be coaxial in the length direction. The length and / or diameter of the first segment 321 may vary depending on the shape of the smoking article 3. For example, the length of the first segment 321 may be suitably selected in 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.

[0103] When the cigarette stick 31 is inserted into the heater 321 through the first section 13, it can prevent the internal material of the cigarette stick 31 from being pushed backward (i.e., in the opposite direction to the insertion direction) and can also generate an aerosol cooling effect. When the first section 321 is a hollow cellulose acetate filter tip, the diameter of the hollow part of the first section 321 is smaller than the outer diameter of the first section 321 and the diameter of the smoking product 3, and can be appropriately selected in the range of 2 mm to 5.5 mm. When the first section 321 is a hollow lyocell filter tip, the diameter of the hollow part of the first section 321 is smaller than the outer diameter of the first section 321 and the diameter of the smoking product 3, and can be appropriately selected in 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, most preferably 2.5 mm to 4 mm, but is not limited thereto. When the first section 321 is a paper tube filter tip, its inner diameter is smaller than the outer diameter of the first section 321 and the diameter of the smoking article 3, and it can be appropriately selected in the range of 5mm to 7.5mm, more preferably 6mm to 7mm, but is not limited thereto.

[0104] When the first section 321 is made of lyocell filaments, the excellent heat resistance of the lyocell filaments can effectively prevent or minimize the deformation of the first section 321 caused by the heat transferred from the heater of the smoking article 3 or the aerosol generated inside the smoking article 3.

[0105] The second section 322 of the filter rod 32 can cool the aerosol generated by the heater 13 heating the filter rod 31. Therefore, the user can inhale the aerosol cooled to a suitable temperature. In particular, the second section 322 is the mouthpiece that comes into contact with the user's mouth and plays a filtering role in ultimately delivering the aerosol from upstream to the user.

[0106] In one embodiment, the second segment 322 of the filter rod 32 may be a Lyocell filter tip composed of a Lyocell filament bundle comprising a plurality of Lyocell fibers. The length of the second segment 322 may be suitably selected in the range of 4 mm to 20 mm. For example, the length of the second segment 322 may be approximately 14 mm, but is not limited thereto.

[0107] In this invention, the lyocell fibers contained in the second segment 322 can be environmentally friendly fibers made from cellulose extracted from wood pulp. The lyocell bundle can refer to a bundle formed by cross-connecting adjacent lyocell fibers.

[0108] 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.

[0109] In some embodiments, lyocell fibers may have a Y-shaped cross section including three protrusions branching from the center, a cross-shaped cross section including four protrusions, a star-shaped cross section including five or more protrusions, or an O-shaped cross section, but the invention is not limited thereto.

[0110] In some embodiments, the lyocell fibers included in the second segment 322 may have a denier count of 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 most preferably 3.33 dtex to 13.33 dtex (3 denier to 12 denier). In some embodiments, the second segment 322 may include lyocell filament bundles with a total denier count 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).

[0111] In some embodiments, based on a length of 14 mm for the second segment 322, the draw resistance of the second segment 322 can be from 5 mmWG to 20 mmWG, preferably from 6 mmWG to 19 mmWG, more preferably from 7 mmWG to 18 mmWG, and even more preferably from 8 mmWG to 17 mmWG. In some embodiments, based on a length of 14 mm for the second segment 322, the draw resistance of the second segment 322 can be from 8.5 mmWG to 9.5 mmWG, 11.5 mmWG to 12.5 mmWG, or 15.5 mmWG to 16.5 mmWG, preferably from 15.7 mmWG to 16.2 mmWG. With draw resistance within the range described above, 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.

[0112] Hardness is a physical property related to the elasticity and resilience of the second section 322, referring to the degree to which the second section 322 resists pressure applied in a direction perpendicular to its length. In order to maintain its shape and facilitate use when the user uses the smoking product, it is preferable to maintain a certain level of hardness.

[0113] In some embodiments, the hardness of the second segment 322 can be 60% to 100%, preferably 70% to 99%, more preferably 75% or more to 98%, even more preferably 80% or more to 97%, even more preferably 85% to 95%, but is not limited thereto. The hardness of the second segment 322 refers to a numerical value of the degree to which the diameter of the second segment 322 is maintained when the second segment 322 is pressed with a certain horizontal force in a direction perpendicular to the length direction of the second segment 322. The value can be a percentage of the diameter of the second segment 322 after the application of the force, relative to the diameter of the second segment 322 before the force is applied.

[0114] The perimeter of the cross section of the second section 322 perpendicular to the length direction of the smoking article 3 can be 14mm to 25mm, for example, 22mm to 23mm, but is not limited thereto.

[0115] In some embodiments, the second segment 322 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 second segment 322 can achieve a predetermined hardness.

[0116] The front plug 33 can prevent liquefied aerosol from flowing from the cigarette stick 31 into the aerosol generating device during smoking. Figures 1 to 3 The function of the attached figure '1'.

[0117] The length and / or diameter of the front plug 33 may vary depending on the shape of the smoking article 3. For example, the length of the front plug 33 may be appropriately selected in the range of 4 mm to 20 mm. Preferably, the length of the front plug 33 may be about 7 mm, but is not limited thereto.

[0118] The front plug 33 may comprise or be made of cellulose acetate and / or lyocell. In particular, the front plug 33 may include at least one internal channel, and the cross-sectional shape of the channel may be manufactured in various ways. For example, the cross-sectional shape of the channel formed inside the front plug 33 may be formed into various shapes such as trilobed, tetralobed, multilobed, polygonal, and / or elliptical.

[0119] The following will explain the packaging paper 35 in detail.

[0120] The first wrapping paper 351 may be a material combining ordinary filter paper rolls with a metal foil such as aluminum foil. In some embodiments, the first wrapping paper 351 may be a material combining ordinary filter paper rolls with aluminum foil. The second wrapping paper 352 and the third wrapping paper 353 may be made of ordinary filter paper rolls. For example, the second wrapping paper 352 and the third wrapping paper 353 may each be a porous roll or a non-porous roll independently.

[0121] In some embodiments, the fourth wrapping paper 354 covering the second section 322 has a basis weight of a predetermined value or higher, and may be composed of at least one of oil-resistant hard roll paper treated with oil resistance and general hard roll paper not treated with oil resistance (i.e., made therefrom). On the other hand, since the fourth wrapping paper 354 is composed of hard roll paper having a basis weight of a predetermined value or higher, it can not only serve as packaging material covering the second section 322 containing lyocell filament bundles, but also serve to impart a predetermined level of hardness to the filter rod 32 according to the present invention. The fourth packaging paper 354 may comprise general hard roll paper of oil-resistant rigid roll paper and / or non-oil-resistant rigid roll paper, and may comprise roll paper with a basis weight of 30 gsm to 180 gsm, preferably 35 gsm to 170 gsm, more preferably 40 gsm to 160 gsm, even more preferably 50 gsm to 158 gsm, even more preferably 60 gsm to 155 gsm, even more preferably 70 gsm to 150 gsm, even more preferably 75 gsm to 150 gsm, but is not limited thereto.

[0122] 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.

[0123] Example 1 Manufactured under the conditions shown in Example 1 in Table 1, having the following characteristics Figure 1 The smoking article shown includes a front plug with a length of 7 mm, a tobacco stick containing tobacco material with a length of 15 mm, a first section consisting of a paper tube filter with an inner diameter of 6 mm and a length of 12 mm, and a second section consisting of a 14 mm length of lyocell filament bundle.

[0124] Comparative Example 1 Except for the use of cellulose acetate tow to manufacture the second section, the smoking product was manufactured under the same conditions as in Example 1, as shown in Comparative Example 1 in Table 1.

[0125] Table 1

[0126] (In Table 1 above, PDC refers to the suction resistance value measured with the smoke bar open, the filter perforation closed, and outside air prevented from entering; PDO refers to the suction resistance value measured with the smoke bar open, the filter perforation not closed, and outside air allowed to enter; Vent represents the air dilution rate (Ventilation rate, VR).) Experimental Example 1. Based on the temperature measurement of the mainstream flue gas drawn from each section of the material in the second part. To compare the mainstream smoke temperature of each puff of the smoking products of Example 1 and Comparative Example 1, the cigarette sticks of the smoking products of Example 1 and Comparative Example 1 were 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.

[0127] 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 second section of the smoke to measure the temperature of the mainstream smoke.

[0128] Table 2

[0129] 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.

[0130] 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.

[0131] Examples 3 to 5 The filter tip (second section) containing lyocell filaments from Example 2 was manufactured into a filter tip with a length of 14 mm according to the conditions shown in Table 3. Based on the suction resistance of the manufactured filter tip (second section), they were named Example 3, Example 4, and Example 5, respectively. The packaging paper used to manufacture the filter tip was a roll of paper with a basis weight of 75 gsm (without oil-resistant treatment).

[0132] Table 3

[0133] Subsequently, filters from Examples 3 to 5 were manufactured using the conditions shown in Table 4 to produce filters with the following characteristics. Figure 4 The smoking article shown includes a front plug with a length of 7 mm, a tobacco stick containing tobacco material with a length of 15 mm, a first section consisting of a paper tube filter with an inner diameter of 6 mm and a length of 12 mm, and a second section consisting of a filter of Examples 3 to 5 with a length of 14 mm.

[0134] Table 4

[0135] (In Table 4 above, PDC refers to the suction resistance value measured with the smoke bar open, the filter perforation closed, and outside air prevented from entering; PDO refers to the suction resistance value measured with the smoke bar open, the filter perforation not closed, and outside air allowed to enter; Vent represents the air dilution rate (Ventilation rate, VR).) Experimental Example 2. Analysis of the composition of flue gas based on the suction resistance of the second section. To compare the composition of smoke with different draw resistances in the second section, the cigarette sticks of the smoking products according to Examples 3 to 5 were 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.

[0136] In particular, the experimental method is as follows: the smoking products of Examples 3 to 5 were tested in a smoking room (specifically, the temperature was approximately 21.9°C and the relative humidity was 64.3%) with an internal temperature of approximately 22±2°C and an internal relative humidity of approximately 60±5%. The smoking conditions were HC conditions (puff volume: 55 ml / puff frequency: 30 seconds / puff duration: 2 seconds / number of puffs: 9). The generated smoke was captured by a Cambridge filter (i.e., Cambridge filter pad, CFP) and then analyzed. The total particulate matter (TPM) was measured as the change in weight of the Cambridge filter after smoking using the smoking device relative to the weight of the Cambridge filter before smoking. Other components were analyzed by gas chromatography (GC) of the captured smoke.

[0137] Table 5

[0138] Referring to Table 5 above, the components of the smoke that migrate during smoking can vary depending on the draw resistance in the second section. Specifically, the amount of moisture migrated in the smoking product of Example 3, which has a higher draw resistance in the second section, is 16.71 mg, while the amount of moisture migrated in the smoking product of Example 5, which has a lower draw resistance, is 19.24 mg. This confirms that the higher the draw resistance, the less moisture migrates in the mainstream smoke, and the better the reduction in heat felt by the user during inhalation. (When the moisture content in the mainstream smoke is high, the smoker will feel a stronger heat sensation at the same temperature.) Experimental Example 3. Nicotine removal capacity based on the suction resistance of the second segment. Subsequently, in order to compare the nicotine removal performance based on the draw resistance of the second section, the cigarette sticks of the smoking products according to Examples 3 to 5 were heated at a heating temperature of 190°C to 280°C by external heating, and the nicotine content in the migrated aerosol and the amount of nicotine remaining inside the second section (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.

[0139] The amount of nicotine in the aerosol was determined by capturing the smoke generated in Experiment 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 second section (filter tip) was extracted by immersing the second section in water after smoking and analyzed using a GC / MS device. The second section (filter tip) was then immersed in a container of distilled water overnight, and the resulting solution containing the extracted components was used for GC / MS analysis.

[0140] [Mathematical Expression 1] Removal capacity (%) = (Residual amount in the second section (filter tip) after smoking) / (Residual amount in the second section (filter tip) after smoking × Aerosol migration after smoking) × 100 [Mathematical Expression 2] Migration rate (%) = 100 (%) - Removal capacity (%) Table 6

[0141] Referring to Table 6 above, it can be confirmed that due to the difference in suction resistance in the second section, the nicotine removal capacity of the filter tip of Example 3, which has a larger suction resistance, is 77.5%, while the nicotine removal capacity of the filter tip of Example 5, which has a smaller suction resistance, is 62.3%. It can be seen that the greater the suction resistance, the better the nicotine removal capacity.

[0142] 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: Cigarette stick, A front plug is positioned on one side of the cigarette stick. The first section is arranged on the opposite side of the tobacco stick, which is the opposite side of the first side. The second section is arranged on the other side of the first section; The second segment 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 second section of 14mm, the suction resistance of the second section is 5mmWG to 20mmWG.

4. The smoking article according to claim 3, characterized in that, Based on the length of the second section of 14mm, the suction resistance of the second section is 8mmWG to 17mmWG.

5. The smoking article according to claim 1, characterized in that, The front plug includes at least one of cellulose acetate and lyocell.

6. The smoking article according to claim 1, characterized in that, The front end plug includes at least one channel inside.

7. The smoking article according to claim 1, characterized in that, The hardness of the second segment is 60% to 100%.

8. The smoking article according to claim 7, characterized in that, The hardness of the second segment is 85% to 95%.

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