US20220256914A1 - Aerosol-generating article including tobacco sheet and aerosol-generating system using the same - Google Patents

Aerosol-generating article including tobacco sheet and aerosol-generating system using the same Download PDF

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Publication number
US20220256914A1
US20220256914A1 US17/617,988 US202017617988A US2022256914A1 US 20220256914 A1 US20220256914 A1 US 20220256914A1 US 202017617988 A US202017617988 A US 202017617988A US 2022256914 A1 US2022256914 A1 US 2022256914A1
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US
United States
Prior art keywords
aerosol
generating article
tobacco
tobacco sheet
generating
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
US17/617,988
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English (en)
Inventor
Young Joong Kim
Sung Jong KI
In Su Park
John Tae LEE
Sun Hwan JUNG
Eun Mi JEOUNG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KT&G Corp
Original Assignee
KT&G Corp
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Filing date
Publication date
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Assigned to KT&G CORPORATION reassignment KT&G CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JEOUNG, EUN MI, JUNG, Sun Hwan, KI, SUNG JONG, KIM, YOUNG JOONG, LEE, JOHN TAE, PARK, IN SU
Publication of US20220256914A1 publication Critical patent/US20220256914A1/en
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
    • 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
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
    • A24B15/14—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco made of tobacco and a binding agent not derived from tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
    • A24B15/167—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes in liquid or vaporisable form, e.g. liquid compositions for electronic cigarettes
    • 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
    • A24D1/18—Selection of materials, other than tobacco, suitable for smoking
    • 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
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/17—Filters specially adapted for simulated smoking devices
    • 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
    • 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
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means

Definitions

  • the present disclosure relates to an aerosol-generating article including a tobacco sheet, and an aerosol-generating system using the same.
  • Reconstituted tobacco including tobacco leaves, fine tobacco powder, leaf veins, stems, etc. may be used for a heated aerosol-generating article.
  • the reconstituted tobacco in the form of strands or cut tobacco undergoes a cutting process, so fiber bonds inside the reconstituted tobacco are broken.
  • heat is discontinuously transferred between the cut tobacco pieces, resulting in heat loss.
  • the aerosol-generating article according to an embodiment may solve the problems of the prior art described above.
  • a second portion includes a tobacco sheet whose length is continuously extended, heat transfer may be effectively performed within the tobacco sheet. Accordingly, a user can feel an excellent smoking feeling with respect to the aerosol-generating article according to the present disclosure.
  • the aerosol-generating article since the second portion includes a tobacco material in the form of a rolled sheet instead of cut tobacco pieces, an airflow passage may be stably secured. As a result, the aerosol-generating article may have a relatively low inhalation resistance.
  • FIG. 1 is a view in which an aerosol-generating article is inserted into an aerosol-generating device according to an embodiment.
  • FIG. 2 is a view in which an aerosol-generating article is inserted into an aerosol-generating device according to another embodiment.
  • FIG. 3 is a view in which an aerosol-generating article is inserted into an aerosol-generating device according to another embodiment.
  • FIG. 4 is a view schematically showing the configuration of an aerosol-generating article according to an embodiment.
  • FIG. 5 is a view showing the configuration of a first portion and a second portion of an aerosol-generating article according to an embodiment.
  • FIG. 6 is a view showing a cross-section of a second portion of an aerosol-generating article according to an embodiment.
  • FIG. 7A is a diagram illustrating how heat is transferred when a second portion of an aerosol-generating article includes cut tobacco, according to an embodiment.
  • FIG. 8A is a diagram illustrating air flow in an aerosol-generating article including cut tobacco, according to an embodiment.
  • FIG. 8B is a diagram illustrating air flow in an aerosol-generating article including one continuous sheet of tobacco, according to an embodiment.
  • the tobacco sheet may have a rectangular shape, and a ratio of a vertical length to a horizontal length of the tobacco sheet may be 10:1 to 30:1.
  • the tobacco sheet may have a corrugated from or may be folded one or more times.
  • the tobacco sheet may have a length of 180 mm or more in one direction.
  • the second portion may include a plurality of tobacco sheets.
  • the aerosol-generating article may have an inhalation resistance of 20 to 60 mm H 2 O.
  • the cross section taken perpendicular to a length direction of the second portion may have at least one closed curve formed by the tobacco sheet
  • a second aspect of the present disclosure may provide an aerosol generating system including: the aerosol-generating article according to the first aspect; and an aerosol-generating device configured to heat at least one of the first portion and the second portion of the aerosol-generating article.
  • the second portion may include one tobacco sheet in a folded form, and the aerosol-generating device generates an aerosol by heating at least part of the first portion and part of the second portion.
  • the means for solving the problem is not limited to the above, and may include all matters that may be inferred by a person skilled in the art throughout the present specification.
  • the general terms which are currently and widely used are selected in consideration of functions of structural elements in the various embodiments of the present disclosure.
  • meanings of the terms can be changed according to intention, a judicial precedence, the appearance of a new technology, and the like.
  • a term which is not commonly used can be selected. In such a case, the meaning of the term will be described in detail at the corresponding portion in the description of the present disclosure. Therefore, the terms used in the various embodiments of the present disclosure should be defined based on the meanings of the terms and the descriptions provided herein.
  • a and/or B means at least one of A and B.
  • the expression, “at least one of a, b, and c,” should be understood as including only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.
  • “on” means that a member is placed on one surface of another member, and includes all cases where a member is placed in contact with or without contact with another member.
  • a length direction of an aerosol-generating article means a direction in which the aerosol generated inside the aerosol-generating article moves or a direction in which the aerosol-generating article is inserted into a device.
  • FIGS. 1 through 3 are diagrams showing examples in which an aerosol generating article 20000 is inserted into an aerosol generating device 10000 .
  • the aerosol generating device 10000 may include a battery 11000 , a controller 12000 , and a heater 13000 . Referring to FIGS. 2 and 3 , the aerosol generating device 10000 may further include a vaporizer 14000 . Also, the aerosol generating article 20000 may be inserted into an inner space of the aerosol generating device 10000 .
  • FIGS. 1 through 3 illustrate some components of the aerosol generating device 10000 , which are related to the embodiments. Therefore, it will be understood by one of ordinary skill in the art that other components may be further included in the aerosol generating device 10000 , in addition to the components illustrated in FIGS. 1 through 3 .
  • FIGS. 1 through 3 illustrate that the aerosol generating device 10000 includes the heater 13000 .
  • the heater 13000 may be omitted according to embodiments.
  • FIG. 1 illustrates that the battery 11000 , the controller 12000 , and the heater 130000 are arranged in series.
  • FIG. 2 illustrates that the battery 11000 , the controller 12000 , the vaporizer 14000 , and the heater 13000 are arranged in series.
  • FIG. 3 illustrates that the vaporizer 14000 and the heater 13000 are arranged in parallel.
  • the internal structure of the aerosol generating device 10000 is not limited to the structures illustrated in FIGS. 1 through 3 . In other words, according to the design of the aerosol generating device 10000 , the battery 11000 , the controller 12000 , the heater 13000 , and the vaporizer 14000 may be differently arranged.
  • the aerosol generating device 10000 may operate the heater 13000 and/or the vaporizer 14000 to generate an aerosol from the aerosol generating article 20000 and/or the vaporizer 14000 .
  • the aerosol generated by the heater 13000 and/or the vaporizer 14000 is delivered to a user by passing through the aerosol generating article 20000 .
  • the aerosol generating device 10000 may heat the heater 13000 .
  • the battery 11000 may supply power to be used for the aerosol generating device 10000 to operate.
  • the battery 11000 may supply power to heat the heater 13000 or the vaporizer 14000 , and may supply power for operating the controller 12000 .
  • the battery 11000 may supply power for operations of a display, a sensor, a motor, etc. mounted in the aerosol generating device 10000 .
  • the controller 12000 may generally control operations of the aerosol generating device 10000 .
  • the controller 12000 may control not only operations of the battery 11000 , the heater 13000 , and the vaporizer 14000 , but also operations of other components included in the aerosol generating device 10000 .
  • the controller 12000 may check a state of each of the components of the aerosol generating device 10000 to determine whether or not the aerosol generating device 10000 is able to operate.
  • the controller 12000 may include at least one processor.
  • a processor can be implemented as an array of a plurality of logic gates or can 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 can be implemented in other forms of hardware.
  • the heater 13000 may be heated by the power supplied from the battery 11000 .
  • the heater 13000 may be located outside the aerosol generating article 20000 .
  • the heated heater 13000 may increase a temperature of an aerosol generating material in the cigarette 20000 .
  • the heater 13000 may include an electro-resistive heater.
  • the heater 13000 may include an electrically conductive track, and the heater 13000 may be heated when currents flow through the electrically conductive track.
  • the heater 13000 is not limited to the example described above and may include all heaters which may be heated to a desired temperature.
  • the desired temperature may be pre-set in the aerosol generating device 10000 or may be set as a temperature desired by a user.
  • the heater 13000 may include an induction heater.
  • the heater 13000 may include an electrically conductive coil for heating aerosol generating article in an induction heating method, and the aerosol generating article may include a susceptor which may be heated by the induction heater.
  • the aerosol generating device 10000 may include a plurality of heaters 13000 .
  • the plurality of heaters 13000 may be inserted into the aerosol generating article 20000 or may be arranged outside the aerosol generating article 20000 .
  • some of the plurality of heaters 13000 may be inserted into the aerosol generating article 20000 and the others may be arranged outside the aerosol generating article 20000 .
  • the shape of the heater 13000 is not limited to the shapes illustrated in FIGS. 1 through 3 and may include various shapes.
  • the vaporizer 14000 may generate an aerosol by heating a liquid composition and the generated aerosol may pass through the aerosol generating article 20000 to be delivered to a user.
  • the aerosol generated via the vaporizer 14000 may move along an air flow passage of the aerosol generating device 10000 and the air flow passage may be configured such that the aerosol generated via the vaporizer 14000 passes through the cigarette 20000 to be delivered to the user.
  • the vaporizer 14000 may include a liquid storage, a liquid delivery element, and a heating element, but it is not limited thereto.
  • the liquid storage, the liquid delivery element, and the heating element may be included in the aerosol generating device 10000 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 formed to be attached/detached to/from the vaporizer 14000 or may be formed integrally with the vaporizer 14000 .
  • 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 nichrome wire and may be positioned as 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, thereby heating the liquid composition. As a result, aerosol may be generated.
  • the aerosol generating device 10000 may further include general-purpose components in addition to the battery 11000 , the controller 12000 , the heater 13000 , and the vaporizer 14000 .
  • the aerosol generating device 10000 may include a display capable of outputting visual information and/or a motor for outputting haptic information.
  • the aerosol generating device 10000 may include at least one sensor (e.g., a puff detecting sensor, a temperature detecting sensor, a cigarette insertion detecting sensor, etc.).
  • the aerosol generating device 10000 may be formed as a structure where, even when the cigarette 20000 is inserted into the aerosol generating device 10000 , external air may be introduced or internal air may be discharged.
  • the aerosol generating device 10000 and an additional cradle may form together a system.
  • the cradle may be used to charge the battery 11000 of the aerosol generating device 10000 .
  • the heater 13000 may be heated when the cradle and the aerosol generating device 10000 are coupled to each other.
  • the external air may be introduced through at least one air passage formed in the aerosol generating device 10000 .
  • opening and closing of the air passage formed in the aerosol generating device 10000 and/or the size of the air passage may be adjusted by the user. Accordingly, the amount and quality of smoke (e.g., aerosols) may be adjusted by the user.
  • the external air may be introduced into the aerosol-generating article 20000 through at least one hole formed on the surface of the aerosol-generating article 20000 .
  • FIG. 4 is a view schematically showing the configuration of an aerosol-generating article 20000 according to an embodiment.
  • the aerosol-generating article 20000 may include a first portion 21000 , a second portion 22000 , a third portion 23000 , and a fourth portion 24000 , which are serially arranged in the length direction of the aerosol-generating article 20000 .
  • the first portion 21000 may include an aerosol-generating material
  • the second portion 22000 may include a tobacco material.
  • the third portion 23000 may cool airflow that has passed through the first portion 21000 and the second portion 22000
  • the fourth portion 24000 may include a filter material.
  • the first portion 21000 may have a length of about 8 to about 12 mm
  • the second portion 22000 may have a length of about 12 to about 14 mm.
  • embodiments are not necessarily limited thereto, and the length of the first portion 21000 and the second portion 22000 may be appropriately adjusted within a range that may be easily changed by a person skilled in the art.
  • the first portion 21000 may include an aerosol-generating material.
  • the aerosol-generating material may include, but are not limited to, glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol.
  • the second portion 22000 may include a tobacco material.
  • cut tobacco may be used as a tobacco material.
  • the second portion 22000 may include a tobacco sheet continuously extending in length. Details of the second portion 22000 will be described with reference to FIGS. 5 and 6 below.
  • the third portion 23000 may cool airflow that has passed through the first portion 21000 and the second portion 22000 .
  • the third portion 23000 may be made of a polymer material or a biodegradable polymer material, and may have a cooling function.
  • the third portion 23000 may be made of polylactic acid (PLA) fibers, but is not limited thereto.
  • the third portion 23000 may be made of a cellulose acetate filter having a plurality of holes.
  • the third portion 23000 is not limited to the above-described examples, and a material for cooling the aerosol may correspond to this without limitation.
  • the third portion 23000 may be a tube filter or a paper pipe including a hollow.
  • the fourth portion 24000 may include a filter material.
  • the fourth portion 24000 may be a cellulose acetate filter.
  • the fourth portion 24000 may be a cylindrical type rod or a tube type rod including a hollow inside.
  • the fourth portion 24000 may be a recess type rod. If the fourth portion 24000 is composed of a plurality of segments, at least one of the plurality of segments may be manufactured in a different shape.
  • the fourth portion 24000 may be manufactured to generate flavor.
  • the fragrance liquid may be sprayed on the fourth portion 24000 , or a separate fiber coated with the fragrance liquid may be inserted into the fourth portion 24000 .
  • the aerosol-generating article 20000 may include a wrapper 25000 surrounding at least a portion of the first portion 21000 to the fourth portion 24000 .
  • the aerosol-generating article 20000 may include a wrapper 25000 surrounding all of the first portion 21000 to the fourth portion 24000 .
  • the wrapper 25000 may be located at the outermost portion of the aerosol-generating article 20000 , and at least one hole through which external air is introduced or internal gas is discharged may be formed in the wrapper 25000 .
  • the wrapper 25000 may be a single wrapper or a combination of a plurality of wrappers.
  • the first portion 21000 of the aerosol-generating article 20000 may include a crimped corrugated sheet containing an aerosol-generating material
  • the second portion 22000 may include a tobacco sheet including a tobacco material and continuously extending in length
  • the third portion 23000 may include a cooling unit
  • the fourth portion 24000 may include a filter material.
  • embodiments are not limited thereto.
  • the first portion 21000 and the second portion 22000 of the aerosol-generating article 20000 may be inserted into the interior of the aerosol-generating device 10000 , and the third portion 23000 and the fourth portion 24000 of the aerosol-generating article 20000 may be exposed to the outside of the aerosol-generating device 10000 .
  • the first portion 21000 and a part of the second portion 22000 may be inserted into the interior of the aerosol-generating device 10000 .
  • a user may inhale the aerosol while the fourth portion 24000 is put into the mouth.
  • the aerosol may be generated when external air passes through the first and second portions, and the generated aerosol may delivered to the user's mouth through the third and fourth portions.
  • FIG. 5 is a view showing the configuration of a first portion 21000 and a second portion 22000 of the aerosol-generating article 20000 according to an embodiment.
  • the first portion 21000 may include an aerosol-generating material.
  • the second portion 22000 may include a tobacco sheet.
  • the tobacco sheet may have a rectangular shape in a fully unfolded state.
  • the tobacco sheet may have a rectangular or square shape.
  • the present invention is not necessarily limited thereto, and the shape of the tobacco sheet may be changed as necessary.
  • the ratio of a vertical length to a horizontal length of the tobacco sheet may be about 10:1 to about 30:1.
  • the ratio of the vertical length to the horizontal length of the tobacco sheet may be about 18:1, about 19:1, about 20:1, about 21:1, about 22:1, about 23:1, or about 24:1.
  • the inhalation resistance of the aerosol-generating article 20000 according to the embodiment may be relatively low, and the thermal conductivity of the aerosol-generating article 20000 may be improved. Accordingly, the user may feel an excellent smoking feeling with respect to the aerosol-generating article 20000 .
  • the tobacco sheet may have a length of about 180 mm or more in one direction.
  • the tobacco sheet may have a length of about 190 mm to about 240 mm in one direction.
  • the length of the tobacco sheet in one direction may be a horizontal length, a vertical length, or a diagonal length.
  • the length of the tobacco sheet in one direction may be the horizontal length of the tobacco sheet.
  • the size of the tobacco sheet may be 230 mm ⁇ 12 mm.
  • the size of the tobacco sheet may be 190 mm ⁇ 8 mm, but embodiments are not limited thereto.
  • a thermal conductivity of the aerosol-generating article 20000 may be improved. Accordingly, a user may feel an excellent smoking feeling with respect to the aerosol-generating article 20000 .
  • the second portion 22000 may include one or two tobacco sheets.
  • the second portion 22000 may include one sheet of tobacco having a size of 230 mm ⁇ 12 mm or 190 mm ⁇ 8 mm.
  • the second portion 22000 may include two tobacco sheets produced by cutting a tobacco sheet having a size of 230 mm ⁇ 12 mm or 190 mm ⁇ 8 mm once.
  • the inhalation resistance of the aerosol-generating article 20000 may be relatively lowered, and the thermal conductivity of the aerosol-generating article 20000 may be improved. As a result, a user may feel an excellent smoking feeling with respect to the aerosol-generating article 20000 .
  • the tobacco sheet may include 75 to 85 parts by weight of tobacco leaves, 5 to 20 parts by weight of a moisturizer, 3 to 10 parts by weight of pulp, and 3 to 10 parts by weight of a viscosity agent, based on a total of 100 parts by weight.
  • the tobacco sheet may be a reconstituted tobacco containing the components of the weight ratio described above.
  • the tobacco sheet may have a corrugated form or may be folded one or more times.
  • the second portion 22000 includes a tobacco sheet in a form that is wrinkled or folded one or more times. Since the length of the tobacco sheet in one direction is about 180 mm or more, it may be difficult for the tobacco sheet to be contained in the second portion 22000 in a completely unfolded form. Accordingly, the tobacco sheet may be included in the second portion 22000 in a corrugated form or a folded form with one or more folds.
  • the tobacco sheet 22000 will be described in more detail with reference to FIG. 6 .
  • FIG. 6 is a view showing a cross-section of a second portion 22000 of the aerosol-generating article 20000 according to an exemplary embodiment.
  • the outermost portion of the second portion 22000 may be a wrapper 25000 .
  • the tobacco sheet 100 described above may be included in a corrugated form or a folded form. Referring to FIG. 6 , the tobacco sheet 100 may be included in a folded form with 8 or more folds. However, embodiments are not limited thereto.
  • airflow may pass through the second portion 22000 with relatively low resistance. Accordingly, the aerosol-generating article 20000 may have a relatively low inhalation resistance.
  • the aerosol-generating article 20000 may have an inhalation resistance of about 20 to about 60 mm H 2 O.
  • the inhalation resistance of about 20 to about 60 mm H 2 O is deemed a relatively low value in the art, which allows a user to smoothly inhale the aerosol. As a result, a user may feel an excellent smoking feeling with respect to the aerosol-generating article 20000 .
  • FIG. 7A is a diagram illustrating how heat is transferred in cut tobacco, according to an embodiment.
  • FIG. 7B is a diagram illustrating how heat is transferred in a continuous tobacco sheet, according to an embodiment.
  • the aerosol-generating article when the aerosol-generating article includes a tobacco material in the form of cut tobacco, it can be seen that heat transferred from the wrapper is discontinuously transferred between the tobacco materials.
  • the second portion 22000 of the aerosol-generating article when the second portion 22000 of the aerosol-generating article includes a tobacco material in the form of a tobacco sheet, it may be seen that the heat transferred from the wrapper 25000 is continuously transferred within the tobacco sheet 200 .
  • the tobacco sheet 200 may be effectively heated, and a user may feel an excellent smoking feeling with respect to the aerosol-generating article 20000 .
  • FIG. 8A is a diagram illustrating air flow in cut tobacco.
  • FIG. 8B is a diagram illustrating air flow in one continuous tobacco sheet.
  • the aerosol-generating article when the aerosol-generating article includes a tobacco material in the form of cut tobacco pieces, it may be seen that the aerosol generated by heating forms a congested airflow between the cut tobacco pieces.
  • the second portion 22000 of the aerosol-generating article includes one tobacco sheet 300 , and the aerosol forms a straight airflow beside the tobacco sheet 300 .
  • the airflow may pass through the second portion 22000 with relatively low resistance, compared to FIG. 8A .
  • the aerosol-generating article 20000 may have relatively low inhalation resistance, and a user may feel an excellent smoking feeling with respect to the aerosol-generating article 20000 .
  • an aerosol-generating system may include the above-described aerosol-generating article 20000 and an aerosol-generating device (not shown) which heats at least one of the first portion 21000 and the second portion 22000 of the aerosol-generating article 20000 .
  • the features described above with respect to the generating article 20000 may be applied to the aerosol generating article included in the aerosol-generating system.
  • the second portion 22000 may include a tobacco sheet that is folded one or more times, and the aerosol-generating device may generate an aerosol by heating at least a portion of the first portion 21000 and at least a portion of the second portion 22000 .
  • At least one of the components, elements, modules or units may be embodied as various numbers of hardware, software and/or firmware structures that execute respective functions described above, according to an exemplary embodiment.
  • at least one of these components may use a direct circuit structure, such as a memory, a processor, a logic circuit, a look-up table, etc. that may execute the respective functions through controls of one or more microprocessors or other control apparatuses.
  • At least one of these components may be specifically embodied by a module, a program, or a part of code, which contains one or more executable instructions for performing specified logic functions, and executed by one or more microprocessors or other control apparatuses.
  • at least one of these components may include or may be implemented by a processor such as a central processing unit (CPU) that performs the respective functions, a microprocessor, or the like. Two or more of these components may be combined into one single component which performs all operations or functions of the combined two or more components. Also, at least part of functions of at least one of these components may be performed by another of these components.
  • a bus is not illustrated in the above block diagrams, communication between the components may be performed through the bus. Functional aspects of the above exemplary embodiments may be implemented in algorithms that execute on one or more processors.
  • components represented by a block or processing steps may employ any number of related art techniques for electronics configuration, signal processing and/or control, data processing and the like.
US17/617,988 2019-12-10 2020-12-07 Aerosol-generating article including tobacco sheet and aerosol-generating system using the same Pending US20220256914A1 (en)

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KR20210073373A (ko) 2021-06-18
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