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
  • A24D3/06—Use of materials for tobacco smoke filters
  • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
  • A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • 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
• • 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
  • A24B15/18—Treatment of tobacco products or tobacco substitutes
  • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
  • A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
• • 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
  • A24D3/06—Use of materials for tobacco smoke filters
  • A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
  • A24D3/063—Use of materials for tobacco smoke filters characterised by structural features of the fibers
• • 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
  • A24D1/002—Cigars; Cigarettes with additives, e.g. for flavouring
• • 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
  • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
  • A24D3/0212—Applying additives to filter materials
  • A24D3/0225—Applying additives to filter materials with solid additives, e.g. incorporation of a granular product
• • 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
  • A24D3/048—Tobacco smoke filters characterised by their shape or structure containing additives

Definitions

• the present invention relates to a smoking article which includes lyocell tow in a second portion including a tobacco element (hereinafter, referred to as a "medium substrate"), so that the smoking article has an improved settling rate of the tobacco element, prevents or minimizes deformation of the medium portion due to the heat applied for heating the smoking article, and thus is capable of providing a more improved smoking experience to a user.
• a tobacco element hereinafter, referred to as a "medium substrate”
• Modern alternative smoking devices and related technologies adopt structures that use various medium portions to effectively transfer tobacco components.
• the devices utilize the principle in which a stick is heated to a high temperature of about 150 to 300 °C, the applied heat is transferred to a medium portion to increase the temperature of the medium portion, and thus tobacco components such as nicotine and the like smoothly move.
• components such as glycerin play an important role in providing a satisfactory smoking experience to smokers by producing vapor (aerosol).
• vapor aerosol
• the heating temperature of the device is set to a temperature equal to or less than the boiling point of glycerin, vapor is not smoothly produced, and thus a smoking experience becomes poor.
• an activated carbon acetate filter i.e., an activated carbon cellulose acetate filter
• an acetate filter i.e., a cellulose acetate filter
• the activated carbon acetate filter was suitable for effectively fixing components structurally, it was difficult to use it in a high-temperature environment because cellulose acetate tow constituting the filter melts at high temperature.
• a smoking article which includes a first portion including an aerosol-generating substrate impregnated with an aerosol-generating element, a second portion including lyocell tow including a plurality of lyocell fibers and a medium substrate, a third portion including a cooling element, and a fourth portion including a filtering element, wherein the first portion, the second portion, the third portion, and the fourth portion are sequentially arranged along the longitudinal direction of the smoking article.
• the medium substrate may be filled in a dispersed form in the lyocell tow.
• the lyocell tow may include the medium substrate in a dispersed form.
• a system including the above-described smoking article and an aerosol-generating device using the same.
• a "longitudinal direction” may refer to a direction corresponding to a longitudinal axis of a smoking article.
• the "longitudinal axis" of a smoking article may refer to an imaginary line extending along the main longitudinal direction of a smoking article. This axis generally runs from one end (e.g., the mouthpiece or filter end) to the opposite end (e.g., the combustion or heat source end) of a smoking article.
• a "lyocell filter” refers to a filter including or composed of lyocell tow.
• lyocell tow includes or is composed of a plurality of lyocell fibers.
• the lyocell tow may refer to a bundle formed by cross-connecting adjacent lyocell fibers.
• lyocell fibers may refer to fibers made of lyocell cellulose.
• lyocell fibers may be fibers made of cellulose derived or primarily derived from wood pulp, especially, semi-synthetic fibers.
• the lyocell fibers may have a Y-shaped cross-section with three protrusions branching and/or extending from the center and/or the center of the cross-section, a cross-shaped cross-section with four protrusions, and/or a star-shaped cross-section with five protrusions, or an O-shaped cross-section, but the present invention is not limited thereto.
• the lyocell fibers may include three or more protrusions branching and/or extending from the center and/or the center of the cross-section.
• the lyocell fibers included in the lyocell tow may have a Y-shaped cross-section for application in cigarette filters.
• a "recess-type rod" as a filter rod may refer to a filter rod with one or more pores.
• component percent (%) and component proportion refer to the weigh percent (wt%) and weight proportion of a component, respectively.
• tobacco material refers to any form of material including components derived from tobacco leaves.
• the aerosol-generating device 100 includes the heater 130, if necessary, the heater 130 may be omitted. In some embodiments, the aerosol-generating device 100 may not include a heater. In some embodiments, the battery 110, the control unit 120, and the vaporizer 140 are sequentially disposed, that is, disposed in a row along the longitudinal direction of the smoking article 200.
• the heater 130 may be heated by the power supplied from the battery 110.
• the heater 130 may be located outside the smoking article 200. Therefore, the heated heater 130 may increase the temperature of an aerosol-generating material in the smoking article 200.
• the heater 130 may be an electrically resistant heater.
• the heater 130 includes an electrically conductive track, and as current flows through the electrically conductive track, the heater 130 may be heated.
• the heater 130 is not limited to the above-described example, and any heater may be used without limitation as long as it can be heated to a desired temperature.
• the desired temperature may be preset in the aerosol-generating device 100 or may be set by a user.
• the vaporizer 140 may heat a liquid composition to generate an aerosol, and the generated aerosol may be delivered to a user by passing through the smoking article 200.
• the aerosol generated by the vaporizer 140 may move along the airflow path of the aerosol-generating device 100, and the airflow path may be configured so that the aerosol generated by the vaporizer 140 can be delivered to a user by passing through the smoking article 200.
• the vaporizer 140 may include a liquid reservoir, a liquid delivery means, and a heating element, but the present invention is not limited thereto.
• the liquid reservoir, the liquid delivery means, and the heating element may be included as independent modules in the aerosol-generating device 100.
• the heating element is an element for heating the liquid composition delivered by the liquid delivery means.
• the heating element may include a metal heating wire, a metal heating plate, and/or a ceramic heater, but the present invention is not limited thereto.
• the heating element may be composed of a conductive filament such as a nichrome wire, and may be disposed in a structure that is wound around the liquid delivery means.
• the heating element may be heated by current supply and may heat the liquid composition by transferring heat to the liquid composition in contact with the heating element. As a result, an aerosol may be generated.
• the vaporizer 140 may be referred to as a cartomizer or an atomizer, but the present invention is not limited thereto.
• the aerosol-generating device 100 may further include general-purpose components in addition to the battery 110, the control unit 120, the heater 130, and the vaporizer 140.
• the aerosol-generating device 100 may include a display capable of outputting visual information and/or a motor for outputting tactile information.
• the aerosol-generating device 100 may include at least one sensor (a puff sensor, a temperature sensor, and/or an aerosol-generating article insertion sensor).
• the aerosol-generating device 100 may be manufactured so that external air can be introduced or internal gas can be discharged even when the smoking article 200 is inserted.
• the aerosol-generating device 100 may constitute a system together with a separate cradle.
• the cradle may be used to charge the battery 110 of the aerosol-generating device 100.
• the heater 130 may be heated while the cradle and the aerosol-generating device 100 are combined.
• the smoking article 200 may be similar to a general combustion-type cigarette.
• the smoking article 200 may be divided into a first portion including an aerosol-generating material and a second portion including a filter and the like.
• an aerosol-generating material may also be included in the second portion of the smoking article 200.
• a granular and/or capsule-type aerosol-generating material may be included in the first portion and optionally in the second portion.
• the entire first portion may be inserted into the inside of the aerosol-generating device 100, and the second portion may be exposed to the outside. Alternatively, only a portion of the first portion may be inserted into the inside of the aerosol-generating device 100, or the entire first portion and a portion of the second portion may be inserted.
• a user may inhale an aerosol while holding the second portion in his/her mouth. In this case, an aerosol is generated by passing external air through the first portion, and the generated aerosol is delivered to the user's mouth by passing through the second portion.
• external air may be introduced through at least one air path formed in the aerosol-generating device 100.
• the opening and closing and/or size of the air path formed in the aerosol-generating device 100 may be adjusted by a user. Accordingly, a vapor amount, a feeling of smoking, and the like may be adjusted by a user.
• external air may be introduced into the inside of the smoking article 200 through at least one hole formed in the surface of the smoking article 200.
• an aerosol-generating device 100 includes a battery 110, a control unit 120, a coil C, and a susceptor S.
• a smoking article 200 may be accommodated in a void V of the aerosol-generating device 100.
• the smoking article 200, the battery 110, and the control unit 120 of FIG. 4 may correspond to the smoking article 200, the battery 110, and the control unit 120 of FIGS. 1 to 3 .
• the coil C and the susceptor S may be included in the heater 130. Therefore, duplicate descriptions are omitted.
• the aerosol-generating device 100 may supply power to the coil C so that the coil C generates a magnetic field. As the magnetic field generated by the coil C passes through the susceptor S, the susceptor S may be heated.
• This induction heating phenomenon is a well-known phenomenon explained by Faraday's law of induction. Particularly, when the magnetic induction in the susceptor S changes, an electric field is generated in the susceptor S, and thus eddy currents flow within the susceptor S. Eddy currents generate heat proportional to the current density and conductor resistance within the susceptor S.
• an aerosol may be generated.
• the aerosol generated from the aerosol-generating material is delivered to a user by passing through the smoking article 200.
• the battery 110 may supply power so that the coil C can generate a magnetic field.
• the control unit 120 may be electrically connected to the coil C.
• the coil C may be an electrically conductive coil that generates a magnetic field by power supplied from the battery 110.
• the coil C may be disposed to surround at least a portion of the void V.
• the magnetic field generated by the coil C may be applied to the susceptor S disposed at the inner end of the void V.
• the susceptor S may be heated as the magnetic field generated from the coil C passes therethrough, and may include a metal and/or carbon.
• the susceptor S may include at least one of ferrite, ferromagnetic alloys, stainless steel, and aluminum.
• the susceptor S may include at least one of graphite, molybdenum, silicon carbide, niobium, nickel alloys, metal films, ceramics such as zirconia, transition metals such as nickel (Ni) and cobalt (Co), and metalloids such as boron (B) or phosphorus (P).
• the susceptor S is not limited to the above-described examples, and any susceptor may be used without limitation as long as it can be heated to a desired temperature by applying a magnetic field.
• the desired temperature may be preset in the aerosol-generating device 100 or may be set by a user.
• the susceptor S When the smoking article 200 is accommodated in the void V of the aerosol-generating device 100, the susceptor S may be disposed to surround at least a portion of the smoking article 200. Therefore, the heated susceptor S may increase the temperature of an aerosol-generating material in the smoking article 200.
• the susceptor S is disposed to surround at least a portion of the aerosol-generating article, but the present invention is not limited thereto.
• the susceptor S may include a tubular heating element, a plate-shaped heating element, a needle-shaped heating element, and/or a rod-shaped heating element, and the inside and/or outside of the smoking article 200 may be heated according to the shape of a heating element.
• a plurality of susceptors S may be disposed in the aerosol-generating device 100.
• a plurality of susceptors S may be disposed outside the smoking article 200 and may be disposed so as to be inserted into the inside.
• some of the plurality of susceptors S may be disposed so as to be inserted into the inside of the smoking article 200, and the remainder may be disposed outside the smoking article 200.
• the shape of the susceptor S is not limited to the shape shown in FIG. 4 , and the susceptor may be manufactured in various shapes.
• FIG. 5 is a diagram showing a smoking article according to an embodiment.
• a smoking article 200 may include a first portion 210, a second portion 220, a third portion 230, and a fourth portion 240.
• the first portion 210, the second portion 220, the third portion 230, and the fourth portion 240 may include an aerosol-generating element, a medium substrate (a tobacco element), a cooling element, and a filtering element, respectively.
• the first portion 210 may include an aerosol-generating material
• the second portion 220 may include a tobacco material and optionally one or more humectants
• the third portion 230 may cool the airflow passing through the first portion 210 and the second portion 220
• the fourth portion 240 may include a filtering material.
• the third portion 230 may be referred to as a cooling structure 230
• the fourth portion 240 may be referred to as a mouthpiece 240.
• the first portion 210, the second portion 220, the third portion 230, and the fourth portion 240 may be sequentially arranged based on a longitudinal direction of the smoking article 200.
• the longitudinal direction of the smoking article 200 may be a direction in which the length of the smoking article 200 extends.
• the longitudinal direction of the smoking article 200 may be a direction from the first portion 210 toward the fourth portion 240. Accordingly, an aerosol generated in at least one of the first portion 210 and the second portion 220 forms an airflow by sequentially passing through the first portion 210, the second portion 220, the third portion 230, and the fourth portion 240, and thus a smoker may inhale the aerosol from the fourth portion 240.
• the first portion 210 may include an aerosol-generating element.
• one or more other additional materials such as a flavoring agent, a wetting agent, and/or an organic acid may be included, and a flavoring liquid including menthol and/or a humectant may be included.
• the aerosol-generating element may include, for example, 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 to the above-described examples, and various types of aerosol-generating elements widely known in the art may be included in the present disclosure.
• the first portion 210 may include an aerosol-generating substrate impregnated with an aerosol-generating element.
• the aerosol-generating substrate may include a crimped sheet, and the aerosol-generating element may be included in the first portion 210 while being impregnated into the crimped sheet.
• one or more other additional materials such as a flavoring agent, a wetting agent, and/or an organic acid, and/or a flavoring liquid may be included in the first portion 210 in a state of being absorbed into the crimped sheet.
• the crimped sheet may be a sheet made of a polymer material.
• the polymer material may include at least one of paper, cellulose acetate (hereinafter, abbreviated as "CA"), and polylactic acid.
• CA cellulose acetate
• the crimped sheet may be a paper sheet that does not generate an off-flavor caused by heat even when heated to a high temperature.
• the present invention is not limited thereto.
• the first portion 210 may extend to a point about 7 mm to about 20 mm from the end of the smoking article 200, and the second portion 220 may extend to a point about 7 mm to about 20 mm from the end of the first portion 210.
• the present invention is not necessarily limited to these numerical ranges, and the length by which each of the first portion 210 and the second portion 220 extends may be appropriately adjusted within the range that can be easily changed by those skilled in the art.
• the first portion 210 may have a length of about 10 mm
• the second portion may have a length of about 12 mm, but the present invention is not limited thereto.
• the second portion 220 may include lyocell tow including a plurality of lyocell fibers and a plurality of medium substrates (or tobacco elements) filled in the lyocell tow.
• the second portion 220 may include a lyocell filter composed of lyocell tow, and a medium substrate filled so as to be uniformly and/or randomly distributed in the entire or partial area of the lyocell filter.
• the medium substrate may include a tobacco element.
• the lyocell fibers included in the second portion 220 may be eco-friendly fibers made of cellulose extracted from wood pulp.
• the lyocell tow may refer to a bundle formed by cross-connecting adjacent lyocell fibers.
• the lyocell fibers may have a shaped cross-section.
• a shaped cross-section is defined as a cross-section having a shape including a plurality of protrusions instead of having a circular shape.
• a cross-section having a shape in which a plurality of protrusions extend from the center may be referred to as a shaped cross-section.
• the lyocell fibers may have a Y-shaped cross-section with three protrusions branching from the center, a cross-shaped cross-section with four protrusions, and/or a star-shaped cross-section with five protrusions, or an O-shaped cross-section, but the present invention is not limited thereto.
• the medium substrate may be filled so as to be inserted into the inside of the lyocell tow.
• the plurality of lyocell fibers constituting the lyocell tow may have a space between the lyocell fibers, and the medium substrate may settle in the space between the lyocell fibers.
• the medium substrate may be filled in a dispersed form in the lyocell tow.
• the medium substrate settles inside the lyocell tow while being located in the space between the plurality of lyocell fibers included in the lyocell tow, and as a result, the medium substrate may be filled in the lyocell filters so that it is not exposed to the outside while being surrounded by the lyocell filters.
• the medium substrate may be a specific type of tobacco material.
• the medium substrate may be in the form of shredded tobacco, tobacco particles, tobacco sheets, tobacco beads, tobacco granules, tobacco powder, and/or tobacco extracts.
• the tobacco material may include, for example, one or more of tobacco leaves, tobacco leaf veins, expanded tobacco, shredded tobacco, reconstituted shredded tobacco leaves, and reconstituted tobacco.
• the second portion 220 may be manufactured by spreading tow constituting a filter, introducing a medium substrate inside and/or on the tow, for example, by a method such as free fall or the like, and rolling the tow with the medium substrate introduced to form a predetermined shape such as a cylindrical shape or the like.
• the medium substrate may be filled so as to be randomly and/or uniformly distributed in the entire or partial area of the lyocell tow.
• the medium substrate may be filled in a dispersed form in the lyocell tow while being located in the space between the lyocell fibers constituting the lyocell tow.
• the lyocell tow including the plurality of lyocell fibers with a space formed therebetween is used as the tow for loading the medium substrate in the second portion 220 according to the present invention, the settling rate of the medium substrate is improved even without a separate additive for adhesion compared to cellulose acetate plasticized by a plasticizer, and thus the efficiency of the manufacturing process and the retention of the medium substrate can be improved.
• the lyocell tow including the plurality of lyocell fibers with a space formed therebetween is used as the tow for loading the medium substrate in the second portion 220, in the case of paper, a phenomenon in which the medium substrate bounces off the surface of paper due to the grain of paper when the medium substrate is introduced is prevented, and thus the efficiency of a manufacturing process can be improved.
• the second portion 220 may further include, for example, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol, which are aerosol-generating materials, but the present invention is not limited thereto.
• the second portion 220 may further include other additional materials such as a flavoring agent, a wetting agent, and/or an organic acid.
• a flavoring liquid including menthol and/or a humectant may be added to the second portion 220.
• a flavoring liquid including menthol and/or a humectant may be added to the second portion 220 by spraying.
• the third portion 230 may cool an airflow passing through the first portion 210 and the second portion 220.
• the third portion 230 may be manufactured using a polymer material, a biodegradable polymer material, and/or a paper tube filter and may have a cooling function.
• the third portion 230 may be a tubular filter and/or a paper tube composed of polylactic acid (PLA) fibers, cellulose acetate fibers, and/or lyocell fibers and having a hollow.
• the hollow may extend along the longitudinal direction of the third portion 230.
• a length and/or diameter of the third portion 230 may vary depending on the shape of the smoking article 200.
• a length of the third portion 230 may be appropriately adjusted in a range of 7 mm to 20 mm.
• the third portion 230 may have a length of about 12 mm, but the present invention is not limited thereto.
• the third portion 230 may have an outer diameter of about 5 mm to 10 mm, preferably 6 mm to 8 mm, more preferably 6.2 mm to 7.8 mm, even more preferably 6.4 mm to 7.6 mm, even more preferably 6.6 mm to 7.4 mm, even more preferably 6.8 mm to 7.2 mm, and even more preferably 7 mm.
• the inner diameter of the third portion 230 may be smaller than the outer diameter and may be appropriately adjusted in a range of about 2 mm to 5.5 mm, preferably 2.1 mm to 5 mm, more preferably 2.2 mm to 4.5 mm, and even more preferably 2.5 mm to 4 mm, but the present invention is not limited thereto.
• the third portion 230 may have an inner diameter of 3.7 mm to 3.9 mm, more preferably 3.8 mm, but the present invention is not limited thereto.
• the fourth portion 240 may be manufactured so as to generate flavor.
• a flavoring liquid may be sprayed onto the fourth portion 240, and alternatively or additionally, a separate fiber coated with a flavoring liquid may be inserted into the inside of the fourth portion 240.
• the lyocell filter of Example 2 and the cellulose acetate filter of Comparative Example 2 were each cut to a length of 12 mm, thereby manufacturing a smoking article 200 shown in FIG. 5 .
• the smoking article 200 shown in FIG. 5 Particularly, like the smoking article 200 shown in FIG.
• PDC may refer to a draw resistance value measured in a state in which the second portion is open, the perforations formed in any one of the first, third, and fourth portions are blocked, and the inflow of external air is blocked
• PDO may refer to a draw resistance value measured in a state in which the second portion is open, the perforations formed in any one of the first, third, and fourth portions are not blocked, and the inflow of external air is allowed.
• Vent refers to a ventilation rate (VR).

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

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  • 2025-01-14 WO PCT/KR2025/000834 patent/WO2025155077A1/fr active Pending
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