WO2023140663A1 - Article de génération d'aérosol et dispositif de génération d'aérosol pour recevoir celui-ci - Google Patents

Article de génération d'aérosol et dispositif de génération d'aérosol pour recevoir celui-ci Download PDF

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Publication number
WO2023140663A1
WO2023140663A1 PCT/KR2023/000976 KR2023000976W WO2023140663A1 WO 2023140663 A1 WO2023140663 A1 WO 2023140663A1 KR 2023000976 W KR2023000976 W KR 2023000976W WO 2023140663 A1 WO2023140663 A1 WO 2023140663A1
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WO
WIPO (PCT)
Prior art keywords
filter
aerosol generating
aerosol
inner diameter
rod
Prior art date
Application number
PCT/KR2023/000976
Other languages
English (en)
Inventor
Seoksu JANG
Jeonghoon Kim
Dongsung Kim
Yonghwan Kim
Hunil LIM
Original Assignee
Kt&G Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kt&G Corporation filed Critical Kt&G Corporation
Publication of WO2023140663A1 publication Critical patent/WO2023140663A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A24D3/0279—Manufacture of tobacco smoke filters for filters with special features with tubes
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
    • A24D1/045—Cigars; Cigarettes with mouthpieces or filter-tips with smoke filter means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR 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 FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A24D3/0287—Manufacture of tobacco smoke filters for filters with special features for composite filters
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/20—Devices using solid inhalable precursors

Definitions

  • the present disclosure is related to an aerosol generating article and an aerosol generating device.
  • An aerosol generating device is a device that extracts certain components from a medium or a substance by producing an aerosol.
  • the medium may contain a multicomponent substance.
  • the substance contained in the medium may be a multicomponent flavoring substance.
  • the substance contained in the medium may include a nicotine component, an herbal component, and/or a coffee component.
  • a cigarette used with an aerosol generating device may be heated above 200 °C to generate an aerosol. If an aerosol generated in a preheating period during which the cigarette is heated prior to inhalation by a user is not cooled sufficiently, it may cause a risk of burn injury to the user after starting inhalation, according to the surrounding environment at the beginning of vaping. Therefore, it is important to cool the temperature of the aerosol generated from the cigarette to a temperature appropriate for inhalation.
  • an aerosol generating article includes: an aerosol generating rod within which an aerosol is generated; and a cooling filter rod located downstream of the aerosol generating rod, wherein: the cooling filter rod includes a first filter and a second filter located downstream of the first filter, the first filter and the second filter each being respectively shaped to include a hollow region defined by an inner diameter of a respective one of the first filter and the second filter, and the inner diameter of the first filter is different from the inner diameter of the second filter.
  • the temperature of an aerosol may be effectively reduced through a plurality of tubes constituting a filter rod and having different inner diameters.
  • the cooling effect of an aerosol may be maximized by controlling the ratio of inner diameters of tubes having different inner diameters.
  • the temperature of an aerosol may be effectively reduced by discharging the aerosol to the outside through a perforation.
  • a sense of discomfort that a user may feel at the beginning of vaping may be reduced by lowering the temperature of an aerosol.
  • a risk of burn injury to a user may be reduced by lowering the temperature of an aerosol.
  • FIGS. 1 and 2 illustrate examples of an aerosol generating article according to embodiments of the present disclosure.
  • FIG. 3 illustrates a shape of a filter rod according to one embodiment of the present disclosure.
  • FIG. 4 illustrates the flow of an aerosol during preheating and vaping in a filter rod according to one embodiment of the present disclosure.
  • FIGS. 5 and 6 respectively illustrate shapes of a filter rod according to another embodiment of the present disclosure.
  • FIGS. 7 to 9 illustrate examples of an aerosol generating device that receives an aerosol generating article according to embodiments of the present disclosure.
  • a suffix such as “module” and “unit” may be used to refer to elements or components. Use of such a suffix herein is merely intended to facilitate description of the specification, and the suffix itself is not intended to give any special meaning or function.
  • FIGS. 1 and 2 illustrate examples of an aerosol generating article according to embodiments of the present disclosure.
  • an aerosol generating article 2 includes a tobacco rod 21 and a filter rod 22.
  • the filter rod 22 in FIG. 1 is illustrated as a single segment, but the present disclosure is not limited thereto.
  • the filter rod 22 may consist of a plurality of segments.
  • the filter rod 22 may include a segment for cooling an aerosol and a segment for filtering a predetermined component included in the aerosol.
  • the filter rod 22 may further include at least one segment performing another function.
  • a diameter of the aerosol generating article 2 may be in a range of 5 mm to 9 mm, and a length of the aerosol generating article 2 may be about 48 mm.
  • a length of the tobacco rod 21 may be about 12 mm
  • a length of a first segment of the filter rod 22 may be about 10 mm
  • a length of a second segment of the filter rod 22 may be about 14 mm
  • a length of a third segment of the filter rod 22 may be about 12 mm.
  • the present disclosure is not limited thereto.
  • the aerosol generating article 2 may be packed or wrapped by at least one wrapper 24.
  • the wrapper 24 may have at least one hole through which external air is introduced or internal gas is discharged.
  • the aerosol generating article 2 may be wrapped by one wrapper 24.
  • the aerosol generating article 2 may be wrapped by two or more wrappers 24 in an overlapping manner.
  • the tobacco rod 21 may be wrapped by a first wrapper 241, and the filter rod 22 may be wrapped by wrappers 242, 243, and 244. And then, the entire aerosol generating article 2 may be repacked or rewrapped by a single wrapper 245.
  • the filter rod 22 includes a plurality of segments
  • the plurality of segments may be respectively wrapped by wrappers 242, 243, and 244.
  • a first wrapper 241 and a second wrapper 242 may be made of general filter wrapping paper.
  • the first wrapper 241 and the second wrapper 242 may be porous wrapping paper or non-porous wrapping paper.
  • the first wrapper 241 and the second wrapper 242 may be made of paper with oil resistance and/or an aluminum laminate packaging material.
  • a third wrapper 243 may be made of hard wrapping paper.
  • a basis weight of the third wrapper 243 may be in a range of 88g/m 2 to 96g/m 2 , and may preferably be in a range of 90g/m 2 to 94g/m 2 .
  • a thickness of the third wrapper 243 may be in a range of 120 ⁇ m to 130 ⁇ m, and may preferably be 125 ⁇ m.
  • a fourth wrapper 244 may be made of oil-resistant hard wrapping paper.
  • a basis weight of the fourth wrapper 244 may be in a range of 88 g/m 2 to 96 g/m 2 , and may preferably be in a range of 90 g/m 2 to 94 g/m 2 .
  • a thickness of the fourth wrapper 244 may be in a range of 120 ⁇ m to 130 ⁇ m, and may preferably be 125 ⁇ m.
  • a fifth wrapper 245 may be made of sterile paper (MFW).
  • MFW sterile paper
  • the sterile paper (MFW) may refer to paper specially designed to have improved tensile strength, water resistance, smoothness, and the like, compared to general paper.
  • a basis weight of the fifth wrapper 245 may be in a range of 57 g/m 2 to 63 g/m 2 , and may preferably be 60 g/m 2 .
  • a thickness of the fifth wrapper 245 may be in a range of 64 ⁇ m to 70 ⁇ m, and may preferably be 67 ⁇ m.
  • a predetermined material may be added into the fifth wrapper 245.
  • an example of the predetermined material may be silicone, but the present disclosure is not limited thereto.
  • silicone may have properties such as heat resistance with little change with temperature, oxidation resistance, resistance to various chemicals, water repellency to water, electrical insulation, etc.
  • any material having the above-described properties may be applied to (or coated on) the fifth wrapper 245.
  • the fifth wrapper 245 may prevent combustion of the aerosol generating article 2.
  • the tobacco rod 21 is heated by a heater 13 (see FIGS. 7 to 9)
  • the fifth wrapper 245 includes a non-combustible material, the combustion of the aerosol generating article 2 may be prevented.
  • the fifth wrapper 245 may prevent a holder 1 (or aerosol generating device 1) from being contaminated by substances produced in the aerosol generating article 2.
  • Liquids may be generated in the aerosol generating article 2 due to a puff by a user.
  • liquids e.g., moisture, etc.
  • the liquids produced in the aerosol generating article 2 may be prevented from leaking outside of the aerosol generating article 2.
  • the tobacco rod 21 may include an aerosol generating material (or substance).
  • the aerosol generating material may include at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol, but the present disclosure is not limited thereto.
  • the tobacco rod 21 may contain other additives such as a flavoring agent, a wetting agent, and/or an organic acid.
  • a flavoring liquid such as menthol or humectant, may be added to the tobacco rod 21 by being sprayed to the tobacco rod 21.
  • the tobacco rod 21 may be manufactured in various forms.
  • the tobacco rod 21 may be formed as a sheet or a strand.
  • the tobacco rod 21 may be formed as shredded tobacco obtained by finely cutting a tobacco sheet.
  • the tobacco rod 21 may be surrounded by a thermally conductive material.
  • the thermally conductive material may be, but is not limited to, a metal foil such as aluminum foil.
  • the thermally conductive material surrounding the tobacco rod 21 may evenly or uniformly distribute heat transferred to the tobacco rod 21, thereby increasing conduction of the heat applied to the tobacco rod 21. As a result, the taste of tobacco may be improved.
  • the thermally conductive material surrounding the tobacco rod 21 may serve as a susceptor that is heated by an induction heater.
  • the tobacco rod 21 may further include an additional susceptor, in addition to the thermally conductive material surrounding an outside thereof.
  • the tobacco rod 21 may include an aerosol generating portion (not shown) and a medium portion (not shown).
  • the aerosol generating portion may be located upstream of the medium portion, but the location of the aerosol generating portion is not limited thereto.
  • the aerosol generating portion includes an aerosol generating material (or substance).
  • the aerosol generating material may include at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol.
  • the present disclosure is not limited thereto.
  • the aerosol generating material of the aerosol generating portion may be impregnated into a non-tobacco material.
  • the non-tobacco material which is a material that is not a tobacco material, may include paper or polylactic acid (PLA). Due to the aerosol generating material included in the aerosol generating portion, the amount of atomization may increase when the user vapes (smokes).
  • the medium portion may include a medium.
  • the medium may include a tobacco component.
  • the medium may include a non-tobacco material to which a liquid material containing the tobacco component is applied.
  • the liquid material includes a tobacco component.
  • the tobacco component may be tobacco granules or tobacco fine particles.
  • the tobacco component may be tobacco leaf flakes, tobacco stems, and/or tobacco fine particles generated during tobacco processing.
  • the tobacco component may be crystalline tobacco granules or amorphous tobacco granules.
  • the tobacco component may be shredded tobacco leaves, shredded reconstituted tobacco, reconstituted tobacco leaves, or the like.
  • the medium portion may further include an additive.
  • the additive may be at least one of a pH adjusting agent, a flavoring agent, an organic acid, and the like.
  • the pH adjusting agent may be added while manufacturing tobacco granules or reconstituted tobacco sheets. Alternatively, the pH adjusting agent may be added in a manner that a medium contains a granule composed of a pH adjusting agent.
  • the pH adjusting agent may be at least one of calcium carbonate, sodium hydrogen carbonate, calcium oxide, and the like. The pH adjusting agent may adjust the pH of a medium to the alkaline side, thereby facilitating the release of a flavor component from the medium.
  • the flavoring agent may include licorice, sucrose, fructose syrup, isosweet, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon oil, orange oil, mint oil, cinnamon, caraway, cognac, jasmine, chamomile, menthol, cinnamon, ylang-ylang, sage, spearmint, ginger, coriander, coffee, or the like.
  • the filter rod 22 may be a cellulose acetate filter. Moreover, the filter rod 22 is not limited to a particular shape. For example, the filter rod 22 may be a cylinder-type rod or a tube-type rod including a hollow therein. Also, the filter rod 22 may be a recess-type rod. When the filter rod 22 consists of a plurality of segments, at least one of the plurality of segments may have a different shape from the others.
  • the first segment of the filter rod 22 may be a cellulose acetate filter.
  • the first segment may be a tube-type structure including a hollow therein.
  • the first segment may prevent materials or substances in the tobacco rod 21 from being pushed back upon insertion of the heater 13, and may provide the aerosol cooling effect.
  • a diameter of the hollow included in the first segment may be appropriately selected in a range of 2 mm to 4.5 mm, but the present disclosure is not limited thereto.
  • a length of the first segment may be appropriately selected in a range of 4 mm to 30 mm, but the present disclosure is not limited thereto.
  • the length of the first segment may preferably be 10 mm, but the present disclosure is not limited thereto.
  • the hardness of the first segment may be controlled by adjusting the content of a plasticizer in the manufacture of the first segment.
  • the first segment may be manufactured by inserting a structure such as a film or a tube made of the same material or different materials into an inside (e.g., a hollow) thereof.
  • the second segment of the filter rod 22 cools an aerosol generated when the heater 13 heats the tobacco rod 21.
  • the user may inhale an aerosol cooled to an appropriate temperature.
  • a length or a diameter of the second segment may be variously determined according to the shape of the aerosol generating article 2.
  • the length of the second segment may be appropriately selected in a range of 7 mm to 20 mm.
  • the length of the second segment may preferably be about 14 mm, but the present disclosure is not limited thereto.
  • the second segment may be made by weaving polymer fibers.
  • a flavoring liquid may be applied to a fiber made of polymers.
  • the second segment may be made by weaving a separate fiber coated with a flavoring liquid and a fiber made of polymers together.
  • the second segment may be made of a crimped polymer sheet.
  • a polymer may be made of a material selected from the group consisting of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polylactic acid (PLA), cellulose acetate (CA), and aluminum foil.
  • PE polyethylene
  • PP polypropylene
  • PVC polyvinyl chloride
  • PET polyethylene terephthalate
  • PLA polylactic acid
  • CA cellulose acetate
  • aluminum foil aluminum foil
  • the second segment may include a single channel or a plurality of channels extending in a longitudinal direction.
  • the "channel” may refer to a passage through which gas (e.g., air or aerosol) passes.
  • the second segment made of a crimped polymer sheet may be made from a material having a thickness between 5 ⁇ m and 300 ⁇ m, namely, between 10 ⁇ m and 250 ⁇ m.
  • a total surface area of the second segment may be between 300 mm 2 /mm and 1000 mm 2 /mm.
  • an aerosol cooling element may be made from a material with a specific surface area between 10 mm 2 /mg and 100 mm 2 /mg.
  • the second segment may include a thread containing a volatile flavor component.
  • the volatile flavor component may be menthol, but the present disclosure is not limited thereto.
  • the thread may be filled with a sufficient amount of menthol to provide at least 1.5 mg of menthol to the second segment.
  • the third segment of the filter rod 22 may be a cellulose acetate filter.
  • a length of the third segment may be appropriately selected in a range of 4 mm to 20 mm.
  • the length of the third segment may be about 12 mm, but the present disclosure is not limited thereto.
  • the third segment may be manufactured to generate a flavor by spraying a flavoring liquid to the third segment.
  • a separate fiber coated with a flavoring liquid may be inserted into the third segment.
  • An aerosol generated in the tobacco rod 21 is cooled while passing through the second segment of the filter rod 22, and the cooled aerosol is delivered to the user through the third segment. Accordingly, when a flavoring element is added to the third segment, the flavor delivered to the user may last longer.
  • the filter rod 22 may include at least one capsule 23.
  • the capsule 23 may function to generate a flavor, or may function to generate an aerosol.
  • the capsule 23 may have a structure in which a liquid containing a flavoring material is wrapped with a film.
  • the capsule 23 may have a spherical or cylindrical shape, but the present disclosure is not limited thereto.
  • an aerosol generating article 3 may further include a front-end plug 33.
  • the front-end plug 33 may be disposed on one side opposite a filter rod 32 with respect to a tobacco rod 31.
  • the front-end plug 33 may prevent the tobacco rod 31 from being separated to the outside, and may prevent a liquefied aerosol from flowing into an aerosol generating device (reference numeral 1 of FIGS. 6 to 8) from the tobacco rod 31 while vaping.
  • the filter rod 32 may include a first segment 321 and a second segment 322.
  • the first segment 321 may correspond to the first segment of the filter rod 22 of FIG. 1
  • the second segment 322 may correspond to the third segment of the filter rod 22 of FIG. 1.
  • a diameter and an overall length of the aerosol generating article 3 may correspond to the diameter and the overall length of the aerosol generating article 2 of FIG. 1.
  • a length of the front-end plug 33 may be about 7 mm
  • a length of the tobacco rod 31 may be about 15 mm
  • a length of the first segment 321 may be about 12 mm
  • a length of the second segment 322 may be about 14 mm.
  • the present disclosure is not limited thereto.
  • the aerosol generating article 3 may be packed or wrapped by at least one wrapper 35.
  • the wrapper 35 may have at least one hole through which external air is introduced or internal gas is discharged.
  • the front-end plug 33 may be wrapped by a first wrapper 351
  • the tobacco rod 31 may be wrapped by a second wrapper 352
  • the first segment 321 may be wrapped by a third wrapper 353, and the second segment 322 may be wrapped by a fourth wrapper 354.
  • the entire aerosol generating article 3 may be repacked or rewrapped by a fifth wrapper 355.
  • the fifth wrapper 355 may have at least one perforation 36.
  • the perforation 36 may be formed in a region surrounding the tobacco rod 31, but the present disclosure is not limited thereto.
  • the perforation 36 may serve to transfer heat generated by the heater 13 shown in FIGS. 7 and 8 to an inside of the tobacco rod 31.
  • the second segment 322 may include at least one capsule 34.
  • the capsule 34 may function to generate a flavor, or may function to generate an aerosol.
  • the capsule 34 may have a structure in which a liquid containing a flavoring material is wrapped with a film.
  • the capsule 34 may have a spherical or cylindrical shape, but the present disclosure is not limited thereto.
  • the first wrapper 351 may be made by coupling a metal foil, such as aluminum foil, to general filter wrapping paper.
  • a total thickness of the first wrapper 351 may be in a range of 45 ⁇ m to 55 ⁇ m, and may preferably be 50.3 ⁇ m.
  • a thickness of the metal foil of the first wrapper 351 may be in a range of 6 ⁇ m to 7 ⁇ m, and may preferably be 6.3 ⁇ m.
  • a basis weight of the first wrapper 351 may be in a range of 50 g/m 2 to 55 g/m 2 , and may preferably be 53 g/m 2 .
  • the second wrapper 352 and the third wrapper 353 may be made of general filter wrapping paper.
  • the second wrapper 352 and the third wrapper 353 may be porous wrapping paper or non-porous wrapping paper.
  • porosity of the second wrapper 352 may be 35000 CU, but the present disclosure is not limited thereto.
  • a thickness of the second wrapper 352 may be in a range of 70 ⁇ m to 80 ⁇ m, and may preferably be 78 ⁇ m.
  • a basis weight of the second wrapper 352 may be in a range of 20 g/m 2 to 25 g/m 2 , and may preferably be 23.5 g/m 2 .
  • porosity of the third wrapper 353 may be 24000 CU, but the present disclosure is not limited thereto.
  • a thickness of the third wrapper 353 may be in a range of 60 ⁇ m to 70 ⁇ m, and may preferably be 68 ⁇ m.
  • a basis weight of the third wrapper 353 may be in a range of 20 g/m 2 to 25 g/m 2 , and may preferably be 21 g/m 2 .
  • the fourth wrapper 354 may be made of PLA laminated paper.
  • the PLA laminated paper may refer to three-layer paper consisting of a paper layer, a PLA layer, and a paper layer.
  • a thickness of the fourth wrapper 354 may be in a range of 100 ⁇ m to 120 ⁇ m, and may preferably be 110 ⁇ m.
  • a basis weight of the fourth wrapper 354 may be in a range of 80 g/m 2 to 100 g/m 2 , and may preferably be 88 g/m 2 .
  • the fifth wrapper 355 may be made of sterile paper (MFW).
  • MFW sterile paper
  • the sterile paper (MFW) may refer to paper specially designed to have improved tensile strength, water resistance, smoothness, and the like, compared to general paper.
  • a basis weight of the fifth wrapper 355 may be in a range of 57 g/m 2 to 63 g/m 2 , and may preferably be 60 g/m 2 .
  • a thickness of the fifth wrapper 355 may be in a range of 64 ⁇ m to 70 ⁇ m, and may preferably be 67 ⁇ m.
  • a predetermined material may be added into the fifth wrapper 355.
  • an example of the predetermined material may be silicone, but the present disclosure is not limited thereto.
  • silicone has properties such as heat resistance with little change with temperature, oxidation resistance, resistance to various chemicals, water repellency to water, electrical insulation, etc.
  • any material having the above-described properties may be applied to (or coated on) the fifth wrapper 355.
  • the front-end plug 33 may be made of cellulose acetate.
  • the front-end plug 33 may be made by adding a plasticizer (e.g., triacetin) to cellulose acetate tow.
  • a mono denier of a filament constituting the cellulose acetate tow may be in a range of 1.0 to 10.0, and may preferably be in a range of 4.0 to 6.0. More preferably, the mono denier of the filament of the front-end plug 33 may be 5.0.
  • a cross section of the filament of the front-end plug 33 may be a Y-shape.
  • a total denier of the front-end plug 33 may be in a range of 20000 to 30000, and may preferably be in a range of 25000 to 30000. More preferably, the total denier of the front-end plug 33 may be 28000.
  • the front-end plug 33 may include at least one channel, and a cross section of the channel may be formed in various shapes.
  • the tobacco rod 31 may correspond to the tobacco rod 21 described above with reference to FIG. 1. Therefore, a detailed description of the tobacco rod 31 will be omitted.
  • the first segment 321 may be made of cellulose acetate.
  • the first segment may be a tube-type structure including a hollow therein.
  • the first segment 321 may be made by adding a plasticizer (e.g., triacetin) to cellulose acetate tow.
  • a plasticizer e.g., triacetin
  • a mono denier and a total denier of the first segment 321 may be the same as the mono denier and the total denier of the front-end plug 33.
  • the second segment 322 may be made of cellulose acetate.
  • a mono denier of a filament of the second segment 322 may be in a range of 1.0 to 10.0, and may preferably be in a range of 8.0 to 10.0. More preferably, the mono denier of the filament of the second segment 322 may be 9.0.
  • a cross section of the filament of the second segment 322 may be a Y-shape.
  • a total denier of the second segment 322 may be in a range of 20000 to 30000, and may preferably be 25000.
  • FIG. 3 illustrates a shape of a filter rod according to one embodiment of the present disclosure.
  • the aerosol generating article 2 shown in FIG. 1 will be used for description, but this may be equally applied to the aerosol generating article 3 shown in FIG. 2.
  • upstream and downstream may be determined based on a direction of air and/or aerosol flowing into the mouth or lungs of a user when the user puffs on an aerosol generating article.
  • FIGS. 1 and 2 since an aerosol generated within the tobacco rod 21, 31 is directed to the filter rod 22, 32, it may be described that the tobacco rod 21, 31 is located upstream of the filter rod 22, 32, and the filter rod 22, 32 is located downstream of the tobacco rod 21, 31.
  • the “upstream” and “downstream” may be determined according to the relative position between components.
  • the filter rod 22 of the aerosol generating article 2 includes a cooling filter rod 220 with a predetermined length.
  • the cooling filter rod 220 may be a cellulose acetate filter.
  • the cooling filter rod 220 may be a tube-type structure that includes cellulose acetate and has a hollow in a cylinder.
  • the cooling filter rod 220 includes a plurality of filters.
  • the cooling filter rod 220 includes a first filter 221 and a second filter 222, each being configured as a hollow filter.
  • the first filter and the second filter are respectively shaped to include a hollow region defined by an inner diameter of a respective one of the first filter and the second filter.
  • the second filter 222 is located downstream of the first filter 221. An upstream end of the second filter 222 may be in contact with a downstream end of the first filter 221.
  • the first filter 221 and the second filter 222 that constitute the cooling filter rod 220 may be integrally formed with each other. Alternatively, the first filter 221 and the second filter 222 may be separately manufactured, and may then be assembled to be in contact with each other to thereby define the cooling filter rod 220.
  • the hardness of the first filter 221 and the second filter 222 may be controlled by adjusting the content of a plasticizer when manufacturing the first filter 221 and the second filter 222. Triacetin may be used as the plasticizer, for example.
  • the first filter 221 includes a first body 221b and a first hollow 221a formed in the first body 221b.
  • the second filter 222 includes a second body 222b and a second hollow 222a formed in the second body 222b.
  • the first hollow 221a of the first filter 221 and the second hollow 222a of the second filter 222 are in communication with each other.
  • the first hollow 221a and the second hollow 222a communicate with each other to thereby form a flow path. Accordingly, an aerosol generated when the aerosol generating article 2 is heated may pass through the first hollow 221a and then flow into the second hollow 222a.
  • An outer diameter of the first filter 221 and an outer diameter of the second filter 222 may be the same. Therefore, the cooling filter rod 220 that is formed such that the downstream end of the first filter 221 and the upstream end of the second filter 222 are in contact with each other may have a hollow tube shape in the form of a cylinder, which has an outer diameter with a constant value.
  • a length of the first filter 221 may be about 5 mm to 7 mm. Preferably, the length of the first filter 221 may be about 6 mm.
  • a length of the second filter 222 may be about 5 mm to 7 mm. Preferably, the length of the second filter 222 may be about 6 mm.
  • the length of the first filter 221 and the length of the second filter 222 may be the same. However, the length of the first filter 221 and the length of the second filter 222 are not limited thereto.
  • the first filter 221 and the second filter 222 may each have an inner diameter (D1, D2) constant along a lengthwise direction of the cooling filter rod 220.
  • a first inner diameter D1 of the first filter 221 may be different from a second inner diameter D2 of the second filter 222.
  • the first inner diameter D1 may be less than the second inner diameter D2.
  • a thickness of the first body 221b of the first filter 221 may be greater than a thickness of the second body 222b of the second filter 222.
  • a ratio (D2/D1) of the second inner diameter D2 of the second filter 222 to the first inner diameter D1 of the first filter 221 may have a predetermined range.
  • the ratio (D2/D1) of the second inner diameter D2 to the first inner diameter D1 may be greater than or equal to 1.5 and less than or equal to 2.0.
  • the ratio (D2/D1) of the second inner diameter D2 to the first inner diameter D1 may be greater than or equal to 1.55 and less than or equal to 1.92.
  • the range of the ratio (D2/D1) of the first inner diameter to the second inner diameter will be described later in detail with reference to Table 1.
  • the first inner diameter D1 may be about 2.4 mm to 3.6 mm. Preferably, the first inner diameter D1 may be about 2.4 mm.
  • the first inner diameter D1 is less than 2.4 mm, the thickness of the first body 221b of the first filter 221 becomes thicker than necessary, making it difficult for the tube to have a circular inner diameter. That is, when the first inner diameter D1 is less than 2.4 mm, the roundness of the inner diameter of the tube is less than 90%. The flow of an aerosol in the tube may become unstable as the roundness of the inner diameter of the tube decreases. Also, when the first inner diameter D1 is less than 2.4 mm, it may cause lint on acetate tow. However, the first inner diameter D1 is not limited thereto.
  • the second inner diameter D2 may be about 3.6 mm to 4.8 mm. Preferably, the second inner diameter D2 may be about 3.7 mm to 4.6 mm. More preferably, the second inner diameter D2 may be about 3.8 mm to 4.5 mm. However, the second inner diameter D2 is not limited thereto.
  • the cooling filter rod 220 may include a plurality of perforations 223.
  • the plurality of perforations 223 may be arranged to be spaced apart from one another in a circumferential direction of the cooling filter rod 220.
  • the plurality of perforations 223 may be formed through a body of the cooling filter rod 220.
  • the plurality of perforations 223 may be formed through a wrapper covering an outer circumferential surface of the cooling filter rod 220 and the body of the cooling filter rod 220.
  • the plurality of perforations 223 may be formed on an outer circumferential surface of the second filter 222.
  • the plurality of perforations 223 may be arranged to be spaced apart from one another in a circumferential direction of the second filter 222.
  • the plurality of perforations 223 may be formed through the second body 222b of the second filter 222 in a thickness direction.
  • the plurality of perforations 223 may allow an outside and an inside of the cooling filter rod 220 to be in fluid communication with each other. External air introduced from the outside to the inside of the cooling filter rod 220 may come in contact with an aerosol through the plurality of perforations 223. An aerosol generated in the tobacco rod 21 may be cooled by external air introduced through the plurality of perforations 223. Alternatively, the aerosol may be discharged to the outside from the inside of the cooling filter rod 220 through the plurality of perforations 223.
  • the plurality of perforations 223 may be located closer to the upstream end of the second filter 222 than a downstream end of the second filter 222.
  • the length of the second filter 222 may be about 6 mm, and the plurality of perforations 223 may be formed at a position less than about 3 mm from the upstream end of the second filter 222.
  • the plurality of perforations 223 may be located as close as possible to the upstream end of the second filter 222.
  • the plurality of perforations 223 may be formed at a position less than 2 mm from the upstream end of the second filter 222.
  • the plurality of perforations 223 may be formed at a position about 1 mm from the upstream end of the second filter 222.
  • FIG. 4 illustrates the flow of an aerosol during a preheating period and a vaping period in a cooling filter rod according to one embodiment of the present disclosure.
  • an aerosol may be generated in the tobacco rod 21 of the aerosol generating article 2.
  • the aerosol generating article 2 may be heated (a preheating period) prior to inhalation by a user, and may be continuously or repeatedly heated (a vaping or inhalation period) after the user initiates inhalation.
  • the aerosol introduced into the second hollow 222a may be discharged to the outside of the cooling filter rod 220 through the plurality of perforations 223 formed in the second body 222b (f2).
  • the second inner diameter D2 of the second hollow 222a is greater than the first inner diameter D1 of the first hollow 221a, an aerosol diffuses from the first filter 221 into the second filter 222, and pressure in the second hollow 222a is higher than pressure in the first hollow 221a. Accordingly, the aerosol may be effectively discharged to the outside of the cooling filter rod 220 through the plurality of perforations 223 after passing through the first hollow 221a and into the second hollow 222a.
  • the plurality of perforations 223 may be formed at a position closer to the upstream end of the second filter 222 than the downstream end of the second filter 222, and may be located adjacent to a boundary surface between the first body 221b and the second body 222b (the downstream end of the first filter 221 and the upstream end of the second filter 222). As the plurality of perforations 223 are located closer on the second body 222b to the boundary surface between the first body 221b and the second body 222b, an aerosol may be more easily discharged to the outside through the plurality of perforations 223a, which is because a pressure change is greatest at the boundary surface between the first body 221b and the second body 222b.
  • the user may inhale a hot aerosol in an initial vaping period after the preheating period. This may cause an unpleasant feeling or discomfort to the user at the beginning of vaping, and may pose a risk of burn injury to the user.
  • the aerosol generating article 2 is configured such that the first inner diameter D1 of the cooling filter rod 220 is less than the second inner diameter D2, and the plurality of perforations 223 are located adjacent to the upstream end of the second filter 222. Accordingly, an aerosol generated in the preheating period may be effectively discharged to the outside through the plurality of perforations 223 of the second filter 222. Thus, a sense of discomfort that the user may feel at the beginning of vaping may be reduced, and a risk of burn injury to the user may be reduced.
  • an aerosol is introduced into the first hollow 221a of the first filter 221 of the cooling filter rod 220 (f3) and flows into the second hollow 222a of the second filter 222.
  • external air may be introduced into the second filter 222 through the plurality of perforations 223 formed in the second body 222b of the second filter 222 (f4).
  • the external air introduced into the second filter 222 may be mixed with the aerosol flowing into the second hollow 222a, and may then be discharged to the outside of the aerosol generating article 2 (the mouth or lungs of the user) (f5).
  • an aerosol may be cooled while passing through the first hollow 221a of the first filter 221 and the second hollow 222a of the second filter 222, and may be cooled by external air introduced through the plurality of perforations 223.
  • the user may inhale a hot aerosol in the vaping period. This may cause an unpleasant feeling or discomfort to the user at the beginning of vaping, and may pose a risk of burn injury to the user.
  • the aerosol generating article 2 is configured such that the plurality of perforations 223 of the cooling filter rod 220 are formed at a position closer to the upstream end of the second filter 222 than the downstream end of the second filter 222. Accordingly, external air introduced into the inside through the plurality of perforations 223 may effectively cool an aerosol until before being discharged from the aerosol generating article 2. Thus, a sense of discomfort that the user may feel at the beginning of vaping may be reduced, and a risk of burn injury to the user may be reduced.
  • Table 1 below shows the inner diameter (D1, D2) of the first filter 221 and the second filter 222 that are included in the cooling filter rod 220 according to one embodiment of the present disclosure, the aerosol temperature, the amount of nicotine, and the amount of glycerin.
  • “D1” and “D2” refer to the inner diameters of the first filter 221 and the second filter 222, respectively, and their unit is mm.
  • “nicotine” refers to the amount (mg) of nicotine generated per one manufactured aerosol generating article (one cigarette).
  • “Gly” refers to the amount (mg) of glycerin generated per one manufactured aerosol generating article (one cigarette).
  • “aerosol temperature” refers to the temperature of aerosol discharged from an aerosol generating article, which is the average temperature of aerosol discharged during five puffs of the initial vaping period after the preheating period.
  • the cooling filter rod 220 used has a diameter of about 7.2 mm
  • the first filter 221 and the second filter 222 used are both cellulose acetate filters, each having a length of about 6 mm.
  • the perforation 223 of the second filter 222 was formed at a position about 1 mm from the upstream end of the second filter 222.
  • a tobacco rod with a length of 22 mm which includes a liquid portion having a length of 10 mm on its upstream side and a medium portion having a length of 12 mm on its downstream side, was located upstream of the cooling filter rod of an aerosol generating article used, and a mouthpiece (acetate filter) with a length of 14 mm was located downstream of the cooling filter rod.
  • Items #2 to #12 are data when the first inner diameter D1 is fixed at 2.4 mm and the second inner diameter D2 is variable.
  • the aerosol temperature decreases as the second inner diameter D2 increases (as the ratio of the second inner diameter D2 to the first inner diameter D1 (D2/D1) increases).
  • the amount of glycerin increases as the second inner diameter D2 increases, until a certain value (4.7 mm), and decreases when the second inner diameter D2 reaches the certain value or more.
  • an aerosol generated in the preheating period may be cooled more efficiently as the ratio (D2/D1) of the second inner diameter D2 to the first inner diameter D1 increases.
  • more amount of aerosol may be generated in the initial vaping period after the preheating period.
  • the aerosol temperature is 67.3 °C, and the amount of nicotine and the amount of glycerin are 0.62 mg/cig and 8.59 mg/cig, respectively.
  • the aerosol temperature is 66.8 °C, and the amount of nicotine and the amount of glycerin are 0.65 mg/cig and 8.54 mg/cig, respectively.
  • the aerosol temperature increased by 0.2 °C, decreased by 1.1 °C, decreased by 1.0 °C, and decreased by 1.5 °C, respectively, the amount of glycerin decreased by 0.16 mg/cig, increased by 0.04 mg/cig, increased by 0.19 mg/cig, and increased by 0.14 mg/cig, respectively, and the amount of nicotine maintained at a similar level throughout Items #3 to #6.
  • the aerosol temperature is 66.6 °C, and the amount of nicotine and the amount of glycerin are 0.59 mg/cig and 8.73 mg/cig, respectively.
  • the aerosol temperature is 66.3 °C, and the amount of nicotine and the amount of glycerin are 0.60 mg/cig and 7.51 mg/cig, respectively.
  • the aerosol temperature decreased by 1.8 °C, by 1.5 °C, by 1.7 °C, and by 2.0 °C, respectively, the amount of glycerin increased by 0.37 mg/cig, increased by 0.31 mg/cig, increased by 0.33 mg/cig, and decreased by 0.89 mg/cig, respectively, and the amount of nicotine decreased by 0.03 mg/cig, by 0.02 mg/cig, by 0.06 mg/cig, and by 0.05 mg/cig, respectively.
  • the aerosol temperature no longer decreases as the second inner diameter D2 increases.
  • the amount of glycerin is higher than that of Items #1, until 4.7 mm of the second inner diameter D2, but decreases rapidly from 5.2 mm of the second inner diameter D2.
  • the amount of nicotine is maintained at about 95% or more relative to the amount of nicotine of Items #1, until 4.6 mm of the second inner diameter D2, but is reduced to less than 95% when the second inner diameter D2 is 4.7 mm or more.
  • D2/D1 is about 1.96 or less
  • 4.6 mm or less is suitable for the second inner diameter D2 when further considering the tendency of a decrease in the amount of nicotine.
  • the cooling filter rod 220 may be configured such that the inner diameter of the first filter is about 2.4 mm, and the inner diameter of the second filter is about 3.7 mm to 4.6 mm (D2/D1 is greater than or equal to about 1.55 mm and less than or equal to about 1.92).
  • the cooling filter rod 220 may reduce the temperature of aerosol generated in the aerosol generating article by about 1.0 °C to 1.9 °C, compared to the case when using the general filter rod with identical inner diameters.
  • the amount of glycerin may be increased by about 0.5% to 4.5%, and the amount of nicotine may be maintained at about 95% or more.
  • the cooling filter rod 220 may increase the cooling effect of aerosol while increasing the amount of glycerin.
  • a user using the aerosol generating article 2 may feel hot or have a sense of discomfort even when the temperature of aerosol increases by 1 °C.
  • the temperature of aerosol becomes high, it may cause a burn injury to the user due to inhalation of the aerosol.
  • the cooling filter rod 220 may effectively reduce the temperature of aerosol while maintaining or increasing the amount of glycerin.
  • FIG. 5 illustrates a shape of a filter rod according to another embodiment of the present disclosure.
  • the cooling filter rod 220 may be configured such that a first inner diameter D1 of a first filter 221 is greater than a second inner diameter D2 of a second filter 222. Except the first inner diameter D1 of the first filter 221 and the second inner diameter D2 of the second filter 222, the rest of the configuration is the same as the cooling filter rod 220 of the embodiment of FIG. 3, so a redundant description thereof will be omitted.
  • the first inner diameter D1 of the first filter 221 may be greater than the second inner diameter D2 of the second filter 222.
  • a thickness of a first body 221b of the first filter 221 may be less than a thickness of a second body 222b of the second filter 222.
  • an aerosol is introduced into a first hollow 221a of the first filter 221 of the cooling filter rod 220 and flows into a second hollow 222a of the second filter 222 of the cooling filter rod 220.
  • External air may be introduced into the second filter 222 through a plurality of perforations 223 formed in the second body 222b.
  • the external air introduced into the second filter 222 may be mixed with the aerosol flowing into the second hollow 222a, and may then be discharged to the outside of the aerosol generating article 2 (the mouth or lungs of the user).
  • an aerosol may be cooled while passing through the first hollow 221a and the second hollow 222a, and may be cooled by external air introduced through the plurality of perforations 223.
  • the aerosol generating article 2 is configured such that the first inner diameter D1 of the first filter 221 of the cooling filter rod 220 is greater than the second inner diameter D2 of the second filter 222 of the cooling filter rod 220. Accordingly, external air may be effectively introduced into the inside through the plurality of perforations 223 of the second filter 222. An aerosol generated in the vaping period may be effectively cooled by the external air introduced into the aerosol generating article 2. Thus, a sense of discomfort that the user may feel at the beginning of vaping may be reduced, and a risk of burn injury to the user may be reduced.
  • FIG. 6 illustrates a shape of a filter rod according to another embodiment of the present disclosure.
  • a first filter 221 may have a first inner diameter D1 constant along the lengthwise direction of the cooling filter rod 220.
  • a second filter 222 may be formed such that a third inner diameter D2a of an upstream end thereof is greater than a fourth inner diameter D2b of a downstream end thereof.
  • An inner diameter of a second hollow 222a of the second filter 222 may gradually increase from the upstream end to the downstream end.
  • the first inner diameter D1 of the first filter 221 may be less than the third inner diameter D2a of the second filter 222. Except the first inner diameter D1 of the first filter 221 and the inner diameters D2a and D2b of the second filter 222, the rest of the configuration is the same as the cooling filter rod 220 of the embodiment of FIG. 3, so a redundant description thereof will be omitted.
  • a thickness of a first body 221b of the first filter 221 may be constant, and may be greater than a thickness of a second body 222b of the second filter 222.
  • the thickness of the second body 222b may gradually decrease from the upstream end to the downstream end.
  • the aerosol generating article 2 In the preheating period, when the aerosol generating article 2 is heated, an aerosol is introduced into a first hollow 221a of the cooling filter rod 220 and flows into the second hollow 222a. Since inhalation by a user does not occur in the preheating period, the aerosol introduced into the second hollow 222a may be discharged to the outside of the cooling filter rod 220 through a plurality of perforations 223 formed in the second body 222b. As the third inner diameter D2a of the second hollow 222a is greater than the first inner diameter D1 of the first hollow 221a, an aerosol diffuses from the first filter 221 into the second filter 222, and pressure in the second hollow 222a is higher than pressure in the first hollow 221a.
  • the aerosol may be effectively discharged to the outside of the cooling filter rod 220 through the plurality of perforations 223 after passing through the first hollow 221a and into the second hollow 222a.
  • the aerosol generating article 2 is configured such that the first inner diameter D1 of the cooling filter rod 220 is less than the third inner diameter D2a, and the third inner diameter D2a is less than the fourth inner diameter D2b. Accordingly, an aerosol generated in the preheating period may be effectively discharged to the outside through the plurality of perforations 223 of the second filter 222. Thus, a sense of discomfort the user may feel at the beginning of vaping may be reduced, and a risk of burn injury to the user may be reduced.
  • external air may be introduced into the second filter 222 through the plurality of perforations 223 formed in the second body 222b of the second filter 222.
  • the external air introduced into the second filter 222 may be mixed with an aerosol flowing into the second hollow 222a, and may then be discharged to the outside of the aerosol generating article 2 (the mouth or lungs of the user).
  • the aerosol generating article 2 is configured such that the plurality of perforations 223 of the cooling filter rod 220 are formed at a position closer to the upstream end of the second filter 222 than the downstream end of the second filter 222. Accordingly, external air introduced into the inside through the perforations 223 may effectively cool an aerosol until before being discharged from the aerosol generating article 2. Thus, a sense of discomfort that the user may feel at the beginning of vaping may be reduced, and a risk of burn injury to the user may be reduced.
  • the cooling filter rod 220 may include a porous filler (not shown) therein.
  • the porous filler may be filled in a tube when manufacturing the first filter 221 and the second filter 222.
  • the porous filler may be filled in acetate tow or applied to the surface of acetate tow during the process of opening the acetate tow prior to steam treatment of the acetate tow.
  • the porous filler may be, for example, activated carbon.
  • the porous filler filled in the cooling filter rod 220 may adsorb moisture contained in an aerosol.
  • the porous filler may adsorb moisture and all or some of volatile components of the water phase components contained in the aerosol. As the porous filler adsorbs moisture contained in the aerosol, the aerosol may be effectively cooled.
  • FIGS. 7 to 9 illustrate examples in which the aerosol generating article 2 is inserted into an aerosol generating device.
  • an aerosol generating device 1 includes a battery 11, a controller 12, and a heater 13. Referring to FIGS. 8 and 9, the aerosol generating device 1 further includes a vaporizer 14. In addition, the aerosol generating article 2 may be inserted into an inner space of the aerosol generating device 1.
  • FIGS. 7 to 9 illustrate components of the aerosol generating device 1, which are related to the embodiments of the present disclosure. However, it will be understood by one of ordinary skill in the art that other general-purpose components may be further included in the aerosol generating device 1, in addition to the components illustrated in FIGS. 7 to 9.
  • FIGS. 8 and 9 illustrate that the aerosol generating device 1 includes the heater 13. However, if necessary, the heater 13 may be excluded.
  • the battery 11, the controller 12, and the heater 13 are arranged in a row.
  • the battery 11, the controller 12, the vaporizer 14, and the heater 13 are arranged in a row.
  • the vaporizer 14 and the heater 13 are arranged in parallel.
  • the internal structure of the aerosol generating device 1 is not limited to those shown in FIGS. 7 to 9. In other words, the arrangement of the battery 11, the controller 12, the heater 13, and the vaporizer 14 may vary according to the design of the aerosol generating device 1.
  • the aerosol generating device 1 may operate the heater 13 and/or the vaporizer 14 to generate an aerosol.
  • the aerosol generated by the heater 13 and/or the vaporizer 14 passes through the aerosol generating article 2 and is delivered to a user.
  • the aerosol generating device 1 may heat the heater 13 even when the aerosol generating article 2 is not inserted into the aerosol generating device 1.
  • the battery 11 supplies power (electric power) used to operate the aerosol generating device 1.
  • the battery 11 may supply power to heat the heater 13 or the vaporizer 14, and may supply power required for the controller 12 to operate.
  • the battery 11 may supply power required to operate a display, a sensor, a motor, and the like, installed at the aerosol generating device 1.
  • the controller 12 controls the overall operation of the aerosol generating device 1.
  • the controller 12 controls the operation not only of the battery 11, the heater 13, and the vaporizer 14, but also of other components included in the aerosol generating device 1.
  • the controller 12 may check the state of each of the components of the aerosol generating device 1 to determine whether the aerosol generating device 1 is in an operable state.
  • the controller 12 includes at least one processor.
  • the processor may be implemented as an array of a plurality of logic gates, or may be implemented as a combination of a general-purpose microprocessor and a memory in which a program executable in the microprocessor is stored. It will be understood by one of ordinary skill in the art that the processor may be implemented in other forms of hardware.
  • the heater 13 may be heated by the power supplied from the battery 11. For example, when a cigarette (or the aerosol generating article 2) is inserted into the aerosol generating device 1, the heater 13 may be located outside the cigarette. Thus, the heated heater 13 may cause the temperature of an aerosol generating material in the cigarette to rise.
  • the heater 13 may be an electro-resistive heater.
  • the heater 13 may include an electrically conductive track, and the heater 13 may be heated as current flows through the electrically conductive track.
  • the heater 13 is not limited to the example described above, and any other heaters that can be heated to a desired temperature may be used.
  • the desired temperature may be preset in the aerosol generating device 1, or may be set by the user.
  • the heater 13 may be an induction heating type heater, namely, an induction heater.
  • the heater 13 may include an electrically conductive coil for heating the aerosol generating article 2 in an induction heating method, and the aerosol generating article 2 may include a susceptor that can be heated by the induction heater.
  • the heater 13 may include a tube-type heating element, a plate-type heating element, a needle-type heating element, or a rod-type heating element, and may heat the inside or outside of the aerosol generating article 2 according to the shape of the heating element.
  • a plurality of heaters 13 may be arranged in the aerosol generating device 1.
  • the plurality of heaters 13 may be inserted into the aerosol generating article 2, or may be disposed outside the aerosol generating article 2.
  • some of the plurality of heaters 13 may be inserted into the aerosol generating article 2, and the others may be disposed outside the aerosol generating article 2.
  • the shape of the heater 13 is not limited to the shapes shown in FIGS. 7 to 9, and may include various shapes.
  • the vaporizer 14 may generate an aerosol by heating a liquid composition, and the generated aerosol may pass through the aerosol generating article 2 to be delivered to the user.
  • the aerosol generated by the vaporizer 14 may flow along an airflow path of the aerosol generating device 1, and the airflow path may be configured such that the aerosol generated by the vaporizer 14 passes through the aerosol generating article 2 to be delivered to the user.
  • the vaporizer 14 may include a liquid storage, a liquid delivery element, and a heating element, but is not limited thereto.
  • the liquid storage, the liquid delivery element, and the heating element may be included in the aerosol generating device 1 as independent modules.
  • the liquid storage may store a liquid composition.
  • the liquid composition may be a liquid including a tobacco-containing material having a volatile tobacco flavor component, or a liquid including a non-tobacco material.
  • the liquid storage may be configured to be detachably attached to the vaporizer 14, or may be integrally formed with the vaporizer 14.
  • the liquid composition may include water, a solvent, ethanol, a plant extract, a flavoring, a flavoring agent, or a vitamin mixture.
  • the flavoring may include, but is not limited to, menthol, peppermint, spearmint oil, various fruit-flavored ingredients, etc.
  • the flavoring agent may include components capable of providing a variety of flavors or tastes to the user.
  • the vitamin mixture may be a mixture of at least one of vitamin A, vitamin B, vitamin C, and vitamin E, but is not limited thereto.
  • the liquid composition may include an aerosol former such as glycerin and propylene glycol.
  • the liquid delivery element may deliver the liquid composition of the liquid storage to the heating element.
  • the liquid delivery element may be a wick such as cotton fiber, ceramic fiber, glass fiber, or porous ceramic, but is not limited thereto.
  • the heating element is an element for heating the liquid composition delivered by the liquid delivery element.
  • the heating element may be a metal heating wire, a metal hot plate, a ceramic heater, or the like, but is not limited thereto.
  • the heating element may include a conductive filament such as a nichrome wire, and may be disposed in a manner of being wound around the liquid delivery element. The heating element may be heated by a current supply, and may transfer heat to the liquid composition in contact with the heating element to thereby heat the liquid composition. As a result, an aerosol may be generated.
  • the vaporizer 14 may be referred to as a cartomizer or an atomizer, but is not limited thereto.
  • the aerosol generating device 1 may further include general-purpose components, in addition to the battery 11, the controller 12, the heater 13, and the vaporizer 14.
  • the aerosol generating device 1 may include a display capable of outputting visual information and/or a motor for outputting tactile information.
  • the aerosol generating device 1 may include at least one sensor (a puff detection sensor, a temperature sensor, a cigarette insertion detection sensor, etc.).
  • the aerosol generating device 1 may be manufactured to have a structure in which external air may be introduced or internal gas may be discharged even when the aerosol generating article 2 is inserted therein.
  • the aerosol generating device 1 may constitute a system together with an additional cradle.
  • the cradle may be used to charge the battery 11 of the aerosol generating device 1.
  • the heater 13 may be heated when the cradle and the aerosol generating device 1 are coupled to each other.
  • the temperature of an aerosol may be effectively reduced through a plurality of tubes constituting a filter rod and having different inner diameters.
  • the cooling effect of an aerosol may be maximized by controlling the ratio of inner diameters of tubes having different inner diameters.
  • the temperature of an aerosol may be effectively reduced by discharging the aerosol to the outside through a perforation.
  • a sense of discomfort that a user may feel at the beginning of vaping may be reduced by lowering the temperature of an aerosol.
  • a risk of burn injury to a user may be reduced by lowering the temperature of an aerosol.
  • an aerosol generating article 2 includes: an aerosol generating rod 21 within which an aerosol is generated; and a cooling filter rod 220 located downstream of the aerosol generating rod 21, wherein: the cooling filter rod 220 includes a first filter 221 and a second filter 222 located downstream of the first filter 221, the first filter 221 and the second filter 222 each being respectively shaped to include a hollow region defined by an inner diameter of a respective one of the first filter and the second filter, and the inner diameter D1 of the first filter 221 is different from the inner diameter D2 of the second filter 222.
  • the inner diameter D1 of the first filter 221 may be less than the inner diameter D2 of the second filter 222.
  • a ratio (D2/D1) of the inner diameter D2 of the second filter 222 to the inner diameter D1 of the first filter 221 may be greater than or equal to 1.55 and less than or equal to 1.92.
  • the inner diameter D1 of the first filter 221 may be about 2.4 mm, and the inner diameter D2 of the second filter 222 may be about 3.7 mm to about 4.6 mm.
  • the second filter 222 may be shaped to define a plurality of perforations 223 arranged in a circumferential direction of the second filter 222.
  • the plurality of perforations 223 may be located closer to an upstream end of the second filter 222 than a downstream end of the second filter 222, in a lengthwise direction of the cooling filter rod.
  • the plurality of perforations 223 may be formed at a position less than about 2 mm from the upstream end of the second filter 222 in the lengthwise direction.
  • the inner diameter D1 of the first filter 221 may be greater than the inner diameter D2 of the second filter 222.
  • the inner diameter of the first filter may be constant along a lengthwise direction of the cooling filter rod 220.
  • the inner diameter of an upstream end of the second filter is greater than or equal to the inner diameter of the first filter 221.
  • the inner diameter of the second filter 222 may gradually increase from upstream to downstream along the lengthwise direction of the cooling filter rod 220.
  • a heating-type aerosol generating device 1 configured to generate an aerosol through the aerosol generating article 2 may be provided.
  • a configuration "A” described in one embodiment of the disclosure and the drawings, and a configuration "B” described in another embodiment of the disclosure and the drawings may be combined with each other. Namely, although the combination between the configurations is not directly described, the combination is possible except in the case where it is described that the combination is impossible.

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  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

L'invention concerne un article de génération d'aérosol. L'article de génération d'aérosol comprend : une tige de génération d'aérosol à l'intérieur de laquelle un aérosol est généré ; et une tige de filtre de refroidissement située en aval de la tige de génération d'aérosol, la tige de filtre de refroidissement comprenant un premier filtre et un second filtre situé en aval du premier filtre, le premier filtre et le second filtre étant chacun formés pour comprendre une région creuse définie par un diamètre interne d'un filtre respectif parmi le premier filtre et le second filtre ; et le diamètre interne du premier filtre étant différent du diamètre interne du second filtre.
PCT/KR2023/000976 2022-01-24 2023-01-19 Article de génération d'aérosol et dispositif de génération d'aérosol pour recevoir celui-ci WO2023140663A1 (fr)

Applications Claiming Priority (2)

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KR1020220010098A KR20230114057A (ko) 2022-01-24 2022-01-24 에어로졸 생성 물품 및 이를 수용하는 에어로졸 생성 장치
KR10-2022-0010098 2022-01-24

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WO2023140663A1 true WO2023140663A1 (fr) 2023-07-27

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080216851A1 (en) * 2007-03-09 2008-09-11 Philip Morris Usa Inc. Smoking articles with restrictor and aerosol former
US20150296877A1 (en) * 2012-12-31 2015-10-22 Philip Morris Products S.A. Impermeable bead in hollow cigarette filter tube
US20160073684A1 (en) * 2013-05-21 2016-03-17 Philip Morris Products S.A. Method for combining segments of a smoking article and combiner for combining such segments
KR20190038301A (ko) * 2017-09-29 2019-04-08 주식회사 케이티앤지 복수의 엘리먼트들을 포함하는 필터 구조물
KR20210155093A (ko) * 2020-06-15 2021-12-22 주식회사 케이티앤지 무화량이 향상된 에어로졸 발생 물품

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080216851A1 (en) * 2007-03-09 2008-09-11 Philip Morris Usa Inc. Smoking articles with restrictor and aerosol former
US20150296877A1 (en) * 2012-12-31 2015-10-22 Philip Morris Products S.A. Impermeable bead in hollow cigarette filter tube
US20160073684A1 (en) * 2013-05-21 2016-03-17 Philip Morris Products S.A. Method for combining segments of a smoking article and combiner for combining such segments
KR20190038301A (ko) * 2017-09-29 2019-04-08 주식회사 케이티앤지 복수의 엘리먼트들을 포함하는 필터 구조물
KR20210155093A (ko) * 2020-06-15 2021-12-22 주식회사 케이티앤지 무화량이 향상된 에어로졸 발생 물품

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