Classifications

• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
  • A24D3/06—Use of materials for tobacco smoke filters
  • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
  • A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D1/00—Cigars; Cigarettes
  • A24D1/20—Cigarettes specially adapted for simulated smoking devices
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
  • A24D3/04—Tobacco smoke filters characterised by their shape or structure
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
  • A24D3/06—Use of materials for tobacco smoke filters
  • A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
  • A24D3/06—Use of materials for tobacco smoke filters
  • A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive

Definitions

• a cooling portion was installed in smoking articles to reduce the discomfort caused by hot smoke when the user inhales the hot smoke.
• the cooling portion used in the past had a structure in which perforations were formed in a paper tube to introduce cold air from the outside, thereby lowering the temperature of the smoke.
• this conventional technology has several limitations. For example, a process of introducing air through the perforations designed in the cooling portion may result in excessive dilution of the tobacco components. This reduces the concentration of the tar and nicotine components delivered, which results in a problem in which the flavor and feeling of smoking expected by the user are not sufficiently provided.
• CA cellulose acetate
• One object of the present invention is to provide a smoking article including: a medium portion, a support structure, a cooling structure, and a mouthpiece portion, wherein by configuring the cooling structure with lyocell tow composed of a plurality of lyocell fibers, deformation of the cooling structure, which is caused by heat transferred from a heater configured to heat the smoking article or an aerosol generated within the smoking article, may be prevented or minimized due to the excellent heat resistance of the lyocell tow.
• a smoking article including: a medium portion; a cooling structure arranged to be spaced apart from one side of the medium portion; and a support structure arranged between the medium portion and the cooling structure, wherein the cooling structure includes lyocell tow including a plurality of lyocell fibers.
• the lyocell tow of the cooling structure may have a tubular shape having a hollow formed therein.
• the cooling structure may further include at least one binder dispersed in the lyocell tow.
• the cooling structure may have an outer diameter of 6 mm to 10 mm.
• the cooling structure may have an inner diameter of 2 mm to 6 mm, and the inner diameter of the cooling structure is smaller than the outer diameter.
• the cooling structure may have an outer diameter of 6 mm to 10 mm and an inner diameter of 2 mm to 6 mm.
• the inner diameter of the cooling structure is smaller than the outer diameter.
• the support structure may have one end, which is located on the one side of the support structure, coming into contact with the cooling structure, and the other end, which is located on the other side opposite the one side, coming into contact with the medium portion.
• the support structure may have a tubular shape having a hollow formed therein, and the hollow of the cooling structure and the hollow of the support structure may communicate with each other.
• a "smoking article” may refer to any product that can be smoked or any product that can provide a smoking experience, regardless of whether the product is based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, or tobacco substitutes.
• the smoking article may include products that can be smoked, such as cigarettes, cigars, and cigarillos.
• a "longitudinal direction” may refer to a direction corresponding to the longitudinal axis of a smoking article.
• a "lyocell filter” refers to a filter including or composed of lyocell tow.
• reconstituted tobacco leaf refers to a tobacco leaf reconstituted from tobacco materials.
• the lyocell fibers may include three or more protrusions branching and/or extending from the center and/or the center of the cross-section.
• the lyocell fibers included in the lyocell tow may have a Y-shaped cross-section in terms of application to cigarette filters.
• “hollow” may refer to a channel extending along in the longitudinal direction.
• recessed filter as a filter may refer to a filter including one or more pores.
• the measured value necessary for calculating the hardness may be obtained using, for example, DHT 200 TM of Filtrona.
• the force applied to the cooling structure may be considered to be a value equivalent to the force applied when an actual user holds a smoking article.
• draw resistance refers to a difference in static pressure between both ends of a sample when an airflow passes through the sample.
• PDC refers to a value obtained by measuring the draw resistance in a state in which the medium portion is open, the perforations of the filter portion are blocked, and the inflow of outside air is blocked
• PDO refers to a value obtained by measuring the draw resistance in a state in which the medium portion is open, the perforations of the filter portion are not blocked, and the inflow of outside air is allowed.
• the draw resistance may be measured using the method specified in ISO standard 6565:2015.
• room temperature may refer to 20 °C to 25 °C.
• puff refers to an action of drawing or inhaling the air through a smoking article to produce and inhale smoke or vapor.
• puff count may refer to the total number of drawing and inhalation actions during use of the smoking article. Alternatively or additionally, the puff count may represent the maximum number of drawing and inhalation actions that the smoking article can provide before it is completely consumed or ceases to function.
• Health Canada (HC) conditions may include a puff volume of 55 ml, a puff frequency of 30 seconds, and a puff duration of 2 seconds.
• the HC conditions may be based on a state in which the perforations of a filter are blocked. In measurement under the HC conditions, the puff count may be 9.
• the "ventilation rate (hereinafter, may be abbreviated as "Vent")" of a smoking article may be defined as the ratio (expressed as a percentage) of the total volume flow rate (e.g., mL/s) of air entering the smoking article without burning or heating through the front region, that is, the longitudinal upstream end, of the smoking article to the total volume flow rate (e.g., mL/s) of air at the outlet, that is, the longitudinal downstream end, of the smoking article.
• the ventilation rate may be measured according to ISO 9512:2019.
• a Cambridge filter (Cambridge filter pad (CFP)) on which the smoke components are collected is immersed in methanol for a predetermined time (for example, 2 hours to 16 hours), treated using a shaker device, and then passed through a polytetrafluoroethylene (PTFE) syringe filter to remove impurities. Thereafter, the content of the components included in the total particulate matter (TPM) of the collected smoke may be measured using a GC/MS device.
• the immersion time may be 20 minutes or more, particularly for tar or nicotine, and 2 hours or more for PG and Gly.
• the support structure 120 includes a tubular structure having a hollow 120H formed therein, and the hollow 120H may function as a channel for the aerosol (i.e., through which the aerosol moves).
• the hollow 120H may extend along the longitudinal direction of the support structure 120.
• the hollow 120H is located at the center of a cross-section perpendicular to the longitudinal direction of the support structure 120 and may extend along the longitudinal direction of the support structure 120.
• the hollow 120H and the support structure 120 may be designed to have a coaxial structure.
• the support structure 120 may have a length of approximately 8 mm to 12 mm (for example, 10 mm), but the present invention is not limited thereto. In some embodiments, the length of the support structure 120 may be shorter than or equal to the length of the cooling structure 130 described below, but the present invention is not limited thereto.
• the downstream end of the tubular structure included in the support structure 120 may come into contact with the upstream end of the tubular structure included in the cooling structure 130.
• one end located on one side (downstream) of the support structure 120 may come into contact with an end located on the other side (upstream) opposite to the one side of the cooling structure 130, and the other end located on the other side (upstream) of the support structure 120 may come into contact with one side end of the medium portion 110.
• the aerosol formed in the medium portion 110 may be moved toward the mouthpiece portion 140 ( i.e., in the downstream direction) through the hollow 120H or 130H.
• the binder may include at least one of a cellulose-based binder, a vinyl-based binder, a polyester-based binder, a dextrin-based binder, a starch-based binder, guar gum, xanthan gum, gum arabic, carrageenan, konjac, and agar, but is not limited thereto as long as the binder is a material capable of binding between a plurality of lyocell fibers to impart appropriate hardness.
• the binder may include at least one of a polyester including one or more selected from the group consisting of alkylenes, arylenes, and heteroarylenes having 5 to 12 carbon atoms, hydroxypropyl methyl cellulose (HPMC), ethyl cellulose (EC), methyl cellulose (MC), carboxymethyl cellulose (CMC), polyvinyl pyrrolidone (PVP), polyvinyl alcohol (PVA), ethylene vinyl acetate (EVAc), dextrin, tapioca starch, corn starch, wheat starch, potato starch, sweet potato starch, cationic starch, esterified starch, guar gum, xanthan gum, gum arabic, carrageenan, konjac, and agar.
• a polyester including one or more selected from the group consisting of alkylenes, arylenes, and heteroarylenes having 5 to 12 carbon atoms, hydroxypropyl methyl cellulose (HPMC), ethyl cellulose (EC),
• the support structure 120 may be a flavored filter to which a flavoring material such as menthol has been added (i.e., flavored). In this case, the flavor development of the smoking article 100 may be enhanced.
• the user may inhale an aerosol at an appropriate temperature, and the mainstream smoke may be smoothly aerosolized to improve an amount of vapor.
• the lyocell fibers included in the cooling structure 130 are environmentally-friendly fibers made from cellulose extracted from wood pulp.
• the lyocell tow may refer to a bundle formed by cross-linking adjacent lyocell fibers.
• the inner diameter of the cooling structure 130 may be smaller than the outer diameter of the cooling structure 130, and may be an appropriate value selected within the range of approximately 2 mm to 6 mm, preferably 2.1 mm to 5.5 mm, more preferably 2.2 mm to 5 mm, even more preferably 2.3 mm to 4.5 mm, and even more preferably 2.4 mm to 4 mm, but the present invention is not limited thereto.
• the inner diameter of the cooling structure 130 may be 2.5 mm to 3.0 mm or 3.5 mm to 4.0 mm, preferably 2.7 mm to 2.9 mm or 3.7 mm to 3.9 mm, or more preferably 2.8 mm or 3.8 mm, but the present invention is not limited thereto.
• the inner diameter of the cooling structure 130 may be 10% to 90%, preferably 20% to 80%, more preferably 25% to 75%, even more preferably 30% to 70%, and even more preferably 35% to 65% of the outer diameter of the cooling structure 130, but the present invention is not limited thereto.
• the lyocell fibers may have a Y-shaped cross-section with three protrusions branching from the center thereof, a cross-shaped cross-section with four protrusions, and/or a star-shaped cross-section with five protrusions, or may also have an O-shaped cross-section, but the present invention is not limited thereto.
• the cooling structure 130 may further include at least one binder.
• the binder may be dispersed in the lyocell tow constituting the cooling structure 130.
• the binder may be distributed in the entire region of the lyocell tow constituting the cooling structure 130.
• the binder may function to impart appropriate hardness to the cooling structure 130 by binding between a plurality of lyocell fibers constituting the lyocell tow.
• lyocell unlike cellulose acetate, lyocell does not have a plasticizer material that hardens lyocell fibers, so by adding a binder instead, appropriate hardness may be imparted to the cooling structure 130.
• the hardness of the cooling structure 130 is a value obtained by quantifying the degree to which the diameter of the cooling structure 130 is maintained when the cooling structure 130 is pressed with a certain level of force in a direction perpendicular to the longitudinal direction of the cooling structure 130, and may be a value indicating, as a percentage, the ratio of the diameter of the cooling structure 130 after the force is applied to the diameter of the cooling structure 130 before the force is applied.
• the smoke components transferred during smoking may differ depending on the difference in the inner diameter of the cooling structure.
• the moisture transfer amount of Example 2 in which the inner diameter of the cooling structure is 2.8 mm is 17.77 mg
• the moisture transfer amount of Example 3 in which the inner diameter of the cooling structure is 3.8 mm is 16.77 mg
• Example 3 has a smaller moisture transfer amount than Example 2, and thus the larger the inner diameter of the tubular structure, the better the effect of reducing the user's feeling of heat.
• the atomization amount (sum of PG + Gly) of Example 2 is 1.06 mg
• the atomization amount (sum of PG + Gly) of Example 3 is 1.34 mg.
• FIGS. 4 to 6 show various types of aerosol generation devices to which smoking articles according to some embodiments of the present disclosure may be applied.
• FIG. 4 is an exemplary block diagram showing a cigarette-type aerosol generation device 1000
• FIGS. 5 and 6 are exemplary configuration diagrams showing a hybrid-type aerosol generation device 1000 in which a liquid and cigarette are used together.
• the aerosol generation device 1000 will be briefly described.
• the aerosol generation device 1000 may be a device configured to generate an aerosol through a cigarette 2000 inserted into an internal space.
• the cigarette 2000 may correspond to the smoking article 100 described above.
• the cigarette 2000 may include the medium portion 110, the support structure 120, and the cooling structure 130 described above. More specifically, when the cigarette 2000 is inserted into the aerosol generation device 1000, the aerosol generation device 1000 may operate the heater portion 1300 to generate an aerosol from the cigarette 2000. The generated aerosol may be delivered to the user through the cigarette 2000.
• the aerosol generation device 1000 may include a battery 1100, a controller 1200, and a heater portion 1300. However, only components related to the embodiments of the present disclosure are shown in FIG. 4 . Therefore, a person skilled in the art to which the present disclosure pertains may understand that other general components may be further included in addition to the components shown in FIG. 4 .
• the aerosol generation device 1000 may further include a display capable of outputting visual information and/or a motor configured to output tactile information, and/or at least one sensor (such as a puff detection sensor, a temperature detection sensor, and/or a cigarette insertion detection sensor).
• a display capable of outputting visual information and/or a motor configured to output tactile information
• at least one sensor such as a puff detection sensor, a temperature detection sensor, and/or a cigarette insertion detection sensor.
• the battery 1100 supplies power used to operate the aerosol generation device 1000.
• the battery 1100 may supply power to heat the heater portion 1300, and may supply power required for the controller 1200 to operate.
• the battery 1100 may supply power required for the display, sensor, motor, and the like (not shown) installed in the aerosol generation device 1000 to operate.
• the controller 1200 may control the overall operation of the aerosol generation device 1000.
• the controller 1200 may control the operation of not only the battery 1100 and the heater portion 1300, but also other components that may be included in the aerosol generation device 1000.
• the controller 1200 may also check the status of each of the components of the aerosol generation device 1000 to determine whether the aerosol generation device 1000 is in an operable state.
• the controller 1200 may include at least one processor.
• the processor may be implemented as an array of multiple logic gates, or may be implemented as a combination of a general-purpose microprocessor and a memory in which a program that may be executed on the microprocessor is stored. Also, it will be understood by those skilled in the art to which the present disclosure pertains that the processor may be implemented as other types of hardware.
• the heater portion 1300 may heat the cigarette 2000 using power supplied from the battery 1100.
• a heating element of the heater portion 1300 may be inserted into a portion of the inner region of the cigarette 2000 to increase the temperature of an aerosol-forming substrate in the cigarette 2000.
• the heating elements may include or may be composed of an electrically resistant material and/or any material capable of induction heating.
• the present invention is not limited thereto, and any material may be used as long as it may be heated to a desired temperature under the control of the controller 1200.
• the desired temperature may be preset in the aerosol generation device 1000 or may be set by the user.
• the aerosol generation device 1000 may operate the heater portion 1300 and/or the vaporizer 1400 to generate an aerosol from the cigarette 2000 and/or the vaporizer 1400.
• the aerosol generated by the heater portion 1300 and/or the vaporizer 1400 may be delivered to a user through the cigarette 2000.
• the heating element of the heater portion 1300 may come into contact with a portion of the outer region of the cigarette 2000 or may be arranged adjacent to the outer region of the cigarette 2000 to increase the temperature of an aerosol-forming substrate inside the cigarette 2000 from the outside.
• the liquid reservoir may store a liquid composition (i.e., a liquid aerosol-forming substrate).
• the liquid reservoir may be manufactured to be detachable from/attachable to the vaporizer 1400 or may be manufactured integrally with the vaporizer 1400.
• the liquid delivery means may deliver a liquid composition in the liquid reservoir to the liquid heating element.
• the liquid delivery means may be, but is not limited to, a wick such as cotton fiber, ceramic fiber, glass fiber, or a porous ceramic.
• the vaporizer 1400 and heater portion 1300 may be arranged in parallel or series. However, the scope of the present disclosure is not limited to this arrangement.
• the vaporizer 1400 may be used interchangeably with terms such as cartomizer or atomizer in the relevant technical field.
• the controller 1200 may further control the operation of the vaporizer 1400, and the battery 1100 may also further supply power to enable the vaporizer 1400 to operate.

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Cigarettes, Filters, And Manufacturing Of Filters (AREA)

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Publications (1)

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Citations (4)

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• 2025
  • 2025-01-14 WO PCT/KR2025/000826 patent/WO2025155070A1/ko active Pending
  • 2025-01-15 EP EP25151974.0A patent/EP4585071A1/de active Pending

Patent Citations (4)

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