KR20220120486A - Aerosol generating article and method of manufacturing the same - Google Patents

Abstract

A manufacturing method for aerosol generating articles comprises the following steps of: providing a tobacco rod comprising a susceptor formed in a twisted form of a plurality of strands; and providing a filter rod disposed on one side of the tobacco rod and wrapping the tobacco rod and the filter rod with a wrapper. The manufacturing method for the aerosol generating articles of the present disclosure has the advantage that cutting of the susceptor is easy because the susceptor is manufactured in the twisted form.

Description

Aerosol-generating articles and methods of making the same

The present disclosure relates to an aerosol-generating article and a method of making the same, and more particularly, to an aerosol-generating article capable of increasing the susceptibility to cut and the exothermic efficiency of a susceptor material and a method of manufacturing the same.

In recent years, there has been an increasing demand for an alternative method that overcomes the disadvantages of conventional cigarettes. For example, there is a growing demand for a method of generating an aerosol as the aerosol generating material in the cigarette or liquid reservoir is heated, rather than a method of generating an aerosol by burning a cigarette.

Heating methods different from the method of heating the cigarette by disposing a heater formed of an electrical resistance material inside or outside the cigarette accommodated in the aerosol generating device and supplying electric power to the heater have been proposed. In particular, research on a method of heating a cigarette by an induction heating method is being actively conducted.

This induction heating method heats the susceptor through an induction coil, but the conventional susceptor is formed as a single body of the same volume, so processing (eg, cutting, etc.) is difficult, and there is a problem in that the heating efficiency is low.

The technical problem to be solved by the present invention is to provide an aerosol-generating article capable of increasing the ease of manufacture and the exothermic effect of a susceptor material and a method for manufacturing the same.

The technical problems of the present disclosure are not limited to the above, and other technical problems may be inferred from the following examples.

A method for manufacturing an aerosol-generating article according to an aspect comprises the steps of providing a tobacco rod including a susceptor in which a plurality of strands are twisted, providing a filter rod disposed on one side of the tobacco rod, and the wrapping the tobacco rod and the filter rod by a wrapper.

In addition, the step of providing the tobacco rod includes the steps of providing a susceptor extending in one direction, wrapping the susceptor with a tobacco material, processing the tobacco material into a cylindrical body, and cutting the cylindrical body do.

In addition, the step of providing the susceptor includes the steps of providing a plurality of wires having different lengths, forming the plurality of wires in a twisted shape in a preset direction, and adding a new wire, thereby changing the twisted shape. extending the step.

Also, the plurality of wires have different diameters.

In addition, the step of providing the susceptor further includes the step of impregnating the aerosol generating material in the susceptor formed in a twisted form of the plurality of strands.

In addition, the step of cutting the cylindrical body includes the step of removing a portion formed so that a predetermined number or more wires are twisted with each other.

In addition, providing the filter rod includes providing a cooling segment for cooling the aerosol and providing a filter segment disposed on one side of the cooling segment for filtering a predetermined component contained in the aerosol.

Also, providing the cooling segment comprises providing a first cooling member through which the aerosol is passed and having a first diameter and a second cooling member through which the aerosol is passed and having a second diameter different from the first diameter. comprising the step of providing

In addition, the method of manufacturing an aerosol-generating article further comprises providing a shear plug disposed on the other side of the tobacco rod prior to providing the tobacco rod.

Further, the step of wrapping by the wrapper includes forming a perforation in a region surrounding at least one region of the tobacco rod and the filter rod.

An aerosol-generating article according to another aspect includes a tobacco rod including a susceptor formed in a form in which a plurality of strands are twisted, a filter rod disposed on one side of the tobacco rod, and a wrapper for packaging the tobacco rod and the filter rod do.

The method of manufacturing the aerosol-generating article of the present disclosure has the advantage that the susceptor is easily cut because the susceptor is manufactured in a twisted manner.

In addition, the method of manufacturing an aerosol-generating article of the present disclosure wraps a twisted susceptor with a tobacco material, processes the tobacco material into a cylinder, and then cuts the susceptor together with the tobacco material, thereby significantly increasing the production rate. and has the advantage of being easy to mass-produce.

In addition, the method for manufacturing an aerosol-generating article of the present disclosure has an advantage in that the susceptor manufactured in a twisted manner is impregnated with an aerosol-generating material, so that the heating efficiency due to an increase in the heating area is remarkably increased.

The effect of the invention is not limited by the contents exemplified above, and more various effects are included in the present specification.

1 to 2 are diagrams illustrating an aerosol generating device of an induction heating method.
3 to 4 are diagrams illustrating examples of cigarettes inserted into an aerosol generating device.
FIG. 5 is a view for explaining a method of manufacturing a susceptor included in the cigarette of FIG. 4 .
6 is a view for explaining the diameter of each of the wires included in the susceptor.
7 is a view for explaining a method of removing a portion of the susceptor.
8 is a view for explaining a method of impregnating the aerosol generating material in the susceptor.
9 is a view for explaining a cigarette according to an embodiment.
10 is a view for explaining a cigarette according to another embodiment.
11 to 12 are views for explaining the cooling segment included in the cigarette.
13 is a flowchart illustrating a method of manufacturing an aerosol-generating article according to an embodiment of the present disclosure.

Terms used in the embodiments are selected as currently widely used general terms as possible while considering the functions in the present disclosure, which may vary depending on intentions or precedents of those of ordinary skill in the art, emergence of new technologies, and the like. In addition, in a specific case, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the corresponding invention. Therefore, the terms used in the present disclosure should be defined based on the meaning of the term and the contents of the present disclosure, rather than the simple name of the term.

In the entire specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated. In addition, terms such as “…unit” and “…module” described in the specification mean a unit that processes at least one function or operation, which may be implemented as hardware or software, or a combination of hardware and software.

Hereinafter, with reference to the accompanying drawings, the present disclosure will be described in detail so that those of ordinary skill in the art related to the present embodiment can easily implement it. However, the present disclosure may be implemented in several different forms and is not limited to the embodiments described herein.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.

1 to 2 are diagrams illustrating an aerosol generating device of an induction heating method.

Referring to FIG. 1 , the aerosol generating device 100 may include a susceptor 110 , an accommodation space 120 , a coil unit 130 , a battery 140 , and a control unit 150 . According to an embodiment, the susceptor 110 may be configured to be included in a cigarette (200 in FIGS. 3 to 4 ). In this case, the aerosol generating device 100 may not include the susceptor 110 as shown in FIG. 2 .

The aerosol generating device 100 shown in FIGS. 1 to 2 shows components related to the present embodiment. Therefore, it can be understood by those of ordinary skill in the art related to this embodiment that other general-purpose components other than those shown in FIGS. 1 to 2 may be further included in the aerosol generating device 100 . .

The aerosol generating device 100 may generate an aerosol by heating the cigarette 200 accommodated in the aerosol generating device 100 in an induction heating method. The induction heating method may refer to a method of generating heat from a magnetic material by applying an alternating magnetic field whose direction is periodically changed to a magnetic material that is heated by an external magnetic field.

When an alternating magnetic field is applied to the magnetic material, energy loss due to eddy current loss and hysteresis loss may occur in the magnetic material, and the lost energy may be emitted from the magnetic material as thermal energy. As the amplitude or frequency of the alternating magnetic field applied to the magnetic material increases, more thermal energy may be emitted from the magnetic material. The aerosol generating device 100 may emit thermal energy from the magnetic body by applying an alternating magnetic field to the magnetic body, and may transfer the thermal energy emitted from the magnetic body to the cigarette 200 .

The magnetic material that generates heat by an external magnetic field may be a susceptor 110 . The susceptor 110 may be formed in a shape such as a piece, a flake, or a strip.

The susceptor 110 may include metal or carbon. The susceptor 110 may include at least one of ferrite, a ferromagnetic alloy, stainless steel, and aluminum (Al). In addition, the susceptor 110 is graphite, molybdenum (molybdenum), silicon carbide (silicon carbide), niobium (niobium), nickel alloy (nickel alloy), a metal film (metal film), zirconia (zirconia), such as It may include at least one of a ceramic, a transition metal such as nickel (Ni) or cobalt (Co), and a metalloid such as boron (B) or phosphorus (P).

The aerosol generating device 100 may include a receiving space 120 for accommodating the cigarette 200 . The receiving space 120 may include an opening that opens on the outside of the receiving space 120 for receiving the cigarette 200 in the aerosol generating device 100 . The cigarette 200 may be accommodated in the aerosol generating device 100 in a direction from the outside of the accommodation space 120 toward the inside of the accommodation space 120 through the opening of the accommodation space 120 .

As shown in FIG. 1 , the susceptor 110 may be disposed at the inner end of the accommodation space 120 . The susceptor 110 may be attached to a bottom surface formed at the inner end of the accommodation space 120 . The cigarette 200 is inserted into the susceptor 110 from the upper end of the susceptor 110 and may be accommodated up to the bottom surface of the accommodating space 120 .

Alternatively, the aerosol generating device 100 may not include the susceptor 110 as in FIG. 2 . In this case, the susceptor 110 may be included in the cigarette 200 .

The aerosol generating device 100 may include a coil unit 130 that applies an alternating magnetic field to the susceptor 110 and induces magnetism in the susceptor 110 . The coil unit 130 may include at least one coil.

The coil may be implemented as a solenoid. The coil may be a solenoid wound along the side of the accommodation space 120 , and the cigarette 200 may be accommodated in the inner space of the solenoid. The material of the conductive wire constituting the solenoid may be copper (Cu). However, the present invention is not limited thereto, and as a material having a low specific resistance and allowing a high current to flow, it is selected from among silver (Ag), gold (Au), aluminum (Al), tungsten (W), zinc (Zn) and nickel (Ni). Any one, or an alloy including at least one may be a material of the conducting wire constituting the solenoid.

The battery 140 may supply power to the coil unit 130 . The battery 140 may be a lithium iron phosphate (LiFePO4) battery, but is not limited thereto. For example, the battery may be a lithium cobalt oxide (LiCoO2) battery, a lithium titanate battery, or the like.

The control unit 150 may control the power supplied to the coil unit 130 . When the coil unit 130 includes a plurality of coils, the controller 150 may vary the amplitude, frequency, etc. of the alternating current supplied to the coils. Also, the controller 150 may vary the magnitude of the DC current supplied to the coils.

The controller 150 may inductively heat the susceptor 110 by controlling the amplitude, frequency, etc. of the alternating current. Also, the controller 150 may induce magnetism in the susceptor 110 by controlling the magnitude of the DC current. The controller 150 may detect a magnetic change of the susceptor 110 varied by induction heating, and calculate the temperature of the susceptor 110 based on the detection result.

3 to 4 are diagrams illustrating examples of cigarettes inserted into an aerosol generating device.

In more detail, FIG. 3 is a diagram illustrating an example of a cigarette 200 inserted into the aerosol generating device 100 when the susceptor 110 is disposed in the aerosol generating device 100 , and FIG. 4 is a susceptor. It is a diagram illustrating an example of a cigarette 200 inserted into the aerosol generating device 100 when 110 is disposed in the cigarette 200 .

Referring to FIG. 3 , the cigarette 200 may be accommodated in the accommodating space 120 along the longitudinal direction of the cigarette 200 . The susceptor 110 may be inserted into the cigarette 200 accommodated in the aerosol generating device 100 . As the cigarette 200 is inserted into the susceptor 110 , the tobacco rod 210 may contact the susceptor 110 . The susceptor 110 may have a structure extending in the longitudinal direction of the aerosol generating device 100 so as to be inserted into the cigarette 200 .

The susceptor 110 may be located at the center of the accommodation space 120 to be inserted into the center of the cigarette 200 . In FIG. 3 , the susceptor 110 is illustrated as having a single number, but is not limited thereto. In other words, the aerosol generating device 100 of the present disclosure may include a plurality of susceptors 110 extending in the longitudinal direction of the aerosol generating device 100 so as to be inserted into the cigarette 200 and disposed in parallel to each other. may be

The coil unit 130 includes at least one coil, and the coil may be wound along the outer surface of the accommodation space 120 to extend in the longitudinal direction. The coil extending along the longitudinal direction may be disposed on the outer surface of the accommodation space 120 . The coil may extend along the longitudinal direction with a length corresponding to the susceptor 110 , and may be disposed at a position corresponding to the susceptor 110 .

Referring to FIG. 4 , the cigarette 200 may be accommodated in the accommodating space 120 along the longitudinal direction of the cigarette 200 . As the cigarette 200 is inserted into the accommodation space 120 , the susceptor 110 may be surrounded by the coil unit 130 .

The susceptor 110 may be located at the center of the tobacco rod 210 for uniform heat transfer. In FIG. 4 , the susceptor 110 is illustrated as a single number, but is not limited thereto. In other words, the aerosol generating device 100 of the present disclosure may include a plurality of susceptors 110 included in the cigarette 200 .

The susceptor 110 of FIG. 4 may be manufactured in a twisted manner, as will be described below with reference to FIG. 5 . According to an embodiment, the susceptor 110 of FIG. 3 may also be manufactured in an elevating manner.

The coil unit 130 includes at least one coil, and the coil may be wound along the outer surface of the accommodation space 120 to extend in the longitudinal direction. The coil extending along the longitudinal direction may be disposed on the outer surface of the accommodation space 120 . The coil may extend along the longitudinal direction with a length corresponding to the susceptor 110 , and may be disposed at a position corresponding to the susceptor 110 .

FIG. 5 is a view for explaining a method of manufacturing a susceptor included in the cigarette of FIG. 4 .

Referring to FIG. 5 , the cigarette 200 may include a susceptor 110 . The cigarette 200 may be referred to as an aerosol generating article.

The susceptor 110 may include a plurality of wires 511 , 512 , and 513 . The wires 511 , 512 , and 513 may include at least one of ferrite, a ferromagnetic alloy, stainless steel, and aluminum (Al). In addition, the wires 511 , 512 , and 513 are graphite, molybdenum, silicon carbide, niobium, nickel alloy, metal film, zirconia ( zirconia), a transition metal such as nickel (Ni) or cobalt (Co), and a metalloid such as boron (B) or phosphorus (P) may be included. A cross section of the plurality of wires 511 , 512 , and 513 may be circular.

In one embodiment, the susceptor 110 may include three wires 511 , 512 , 513 . Hereinafter, an example in which the susceptor 110 includes three wires 511 , 512 , and 513 will be described, but the number of wires is not limited thereto.

The susceptor 110 may include a first wire 511 , a second wire 512 , and a third wire 513 . The first wire 511 , the second wire 512 , and the third wire 513 may have different lengths. For example, the first wire 511 is set to a first length, the second wire 512 is set to a second length longer than the first length, and the third wire 513 is set to a second length longer than the second length. It can be set to 3 lengths.

The susceptor 110 may be manufactured in a shape in which a plurality of wires 511 , 512 , and 513 are twisted with each other. In other words, the first wire 511 , the second wire 512 , and the third wire 513 may be twisted with each other. Accordingly, each of the first wire 511 , the second wire 512 , and the third wire 513 may extend in an inclined direction with respect to one direction. In this case, one direction may mean a longitudinal direction of the cigarette 200 . As the susceptor 110 is manufactured in a twisted shape, there is an advantage in that it is easier to cut and the tensile strength is increased compared to a case in which the susceptor 110 is formed as a single body of the same volume.

The first wire 511 , the second wire 512 , and the third wire 513 may be formed to be twisted in a predetermined direction. For example, the first wire 511 , the second wire 512 , and the third wire 513 may be formed to be twisted in a clockwise direction. As another example, the first wire 511 , the second wire 512 , and the third wire 513 may be twisted counterclockwise.

The first wire 511 , the second wire 512 , and the third wire 513 are formed to be twisted in a predetermined direction, and may extend in one direction. For example, one direction may mean a longitudinal direction of the cigarette 200 .

Since the first wire 511 , the second wire 512 , and the third wire 513 each have different lengths, at a certain point in time, one wire can no longer be twisted with the other two wires. The manufacturing method of the present disclosure may extend the susceptor 110 by adding a new wire in consideration of such a predetermined time point.

In more detail, since the length of the first wire 511 is the shortest among the plurality of wires 511 , 512 , and 513 , the first wire 511 is connected to the second wire 512 and the third wire 513 . A new wire 514 may be provided at a point where it can no longer be twisted. For example, the predetermined time point may be set based on a time point at which the length of the non-twisted portion of the first wire 511 becomes shorter than the reference length. The reference length may be set to 1 cm to 3 cm, but is not limited thereto.

Meanwhile, the provided new wire 514 may be formed to be twisted with the second wire 512 and the third wire 513 . Accordingly, the susceptor 110 may extend in one direction. The length of the new wire 514 may be set based on the length of the longest wire among the plurality of wires 511 , 512 , and 513 . For example, the length of the new wire 514 may be set to be greater than the length of the third wire 513 .

As the lengths of the first wire 511 , the second wire 512 , and the third wire 513 are provided with different lengths, the lengths of the new wires 514 added thereafter may all be set to be the same. have. In other words, the susceptor 110 of the present disclosure can be manufactured in an unlimited continuous supply method, so that the production rate can be significantly increased.

6 is a view for explaining the diameter of each of the wires included in the susceptor.

6 schematically shows a cross-section of the susceptor 110 . Referring to FIG. 6 , the plurality of wires 511 , 512 , and 513 may have different diameters. For example, the first wire 511 is set to a first diameter r1, the second wire 512 is set to a second diameter r2 larger than the first diameter r1, and the third wire ( 513 may be set to a third diameter r3 that is larger than the second diameter r2.

As the diameters of the plurality of wires 511 , 512 , and 513 are set to different diameters, porosity may be increased. In addition, as the porosity increases, the ability to retain an aerosol-generating material, which will be described later, may be increased.

7 is a view for explaining a method of removing a portion of the susceptor.

7 schematically shows cross-sections 710 and 720 of the susceptor 110 . Referring to FIG. 7 , the susceptor 110 includes three wires 511 , 512 , and 513 , so when viewed from the cross-section 710 of the susceptor 110 , the three wires 511 , 512 , 513) can be observed. However, according to the above-described unlimited supply method, four or more wires 511 , 512 , 513 , and 514 can be observed in the cross section 720 in a portion of the susceptor 110 .

The manufacturing method of the present disclosure may remove a portion formed so that a predetermined number or more of wires are twisted with each other for control accuracy. For example, the preset number may be set to 4, but is not limited thereto.

In an embodiment, a portion in which a predetermined number or more of wires are twisted together may be detected based on a weight per unit length. In another embodiment, a portion in which a predetermined number or more of wires are twisted with each other may be detected based on a change in capacitance in a state in which a current is induced in the susceptor 110 .

8 is a view for explaining a method of impregnating the aerosol generating material in the susceptor.

Referring to FIG. 8 , the susceptor 110 may be formed in a form in which a first wire 511 , a second wire 512 , and a third wire 513 are twisted. The aerosol generating material 810 may be impregnated between the plurality of wires 511 , 512 , 513 . In other words, the aerosol generating material 810 may penetrate between a plurality of wire stands. The aerosol generating material 810 may be sprayed onto the plurality of wire strands, thereby penetrating between the plurality of wire strands.

The aerosol generating material 810 may include a slurry stock solution, glycerin, and the like. According to an embodiment, the aerosol generating material 810 may include any one component of water, a solvent, ethanol, a plant extract, a fragrance, a flavoring agent, and a vitamin mixture, or a mixture of these components. The fragrance may include, but is not limited to, menthol, peppermint, spearmint oil, various fruit flavoring ingredients, and the like. Flavoring agents may include ingredients capable of providing a user with a variety of flavors or flavors. 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 aerosol generating material 810 may also include an aerosol former such as glycerin and propylene glycol.

For example, the aerosol generating material 810 may include a solution of glycerin and propylene glycol in any weight ratio to which a nicotine salt has been added. The aerosol generating material 810 may include two or more nicotine salts. Nicotine salts can be formed by adding to nicotine a suitable acid, including organic or inorganic acids. Nicotine is either naturally occurring nicotine or synthetic nicotine, which may have any suitable weight concentration relative to the total solution weight of the aerosol generating material 810 .

The acid for the formation of the nicotine salt may be appropriately selected in consideration of the blood nicotine absorption rate, the operating temperature of the aerosol generating device 100 , flavor or flavor, solubility, and the like. For example, acids for the formation of nicotine salts are benzoic acid, lactic acid, salicylic acid, lauric acid, sorbic acid, levulinic acid, pyruvic acid, formic acid, acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, caprylic acid, capric acid , citric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, phenylacetic acid, tartaric acid, succinic acid, fumaric acid, gluconic acid, saccharic acid, malonic acid or malic acid alone or It may be a mixture of two or more acids selected from the group, but is not limited thereto.

As the susceptor 110 is manufactured in a shape in which a plurality of wire strands are twisted with each other, the aerosol generating material 810 may penetrate between the susceptor strands, and thus the heating area may be increased. In addition, heat generation efficiency may be remarkably increased due to an increase in the heat generation area.

9 is a view for explaining a cigarette according to an embodiment.

Referring to FIG. 9 , the cigarette 2 includes a tobacco rod 21 and a filter rod 22 . The cigarette 2 may correspond to the cigarette 200 of FIG. 4 .

The tobacco rod 21 comprises an aerosol generating material. For example, the aerosol generating material may include, but is not limited to, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol and oleyl alcohol. The tobacco rod 21 may also contain other additive substances such as flavoring agents, wetting agents and/or organic acids. In addition, a flavoring liquid such as menthol or a moisturizing agent can be added to the tobacco rod 21 by being sprayed onto the tobacco rod 21 .

Tobacco rod 21 may be manufactured in various ways. For example, the tobacco rod 21 may be manufactured as a sheet or as a strand. In addition, the tobacco rod 21 may be made of cut filler from which the tobacco sheet is chopped. In addition, the tobacco rod 21 may be surrounded by a heat-conducting material. For example, the heat-conducting material may be, but is not limited to, a metal foil such as aluminum foil. For example, the heat-conducting material surrounding the tobacco rod 21 may improve the thermal conductivity applied to the tobacco rod by evenly distributing the heat transferred to the tobacco rod 21, thereby improving the tobacco taste. . In addition, the heat-conducting material surrounding the tobacco rod 21 may function as a susceptor heated by an induction heater.

On the other hand, the tobacco rod 21 may further include an additional susceptor 110 in addition to the heat-conducting material surrounding the outside.

The susceptor 110 may be formed in a form in which a plurality of strands are twisted. The susceptor 110 is disposed at the center of the tobacco rod 21 , and may extend in the longitudinal direction of the tobacco rod 21 . The length of the susceptor 110 may be set to be less than or equal to the length of the tobacco rod 21 . 9 shows an example in which the length of the susceptor 110 is set equal to the length of the tobacco rod 21 , but according to the embodiment, the length of the susceptor 110 is smaller than the length of the tobacco rod 21 . can be set.

The susceptor 110 is wrapped by a tobacco material, and the tobacco material may be processed into a cylindrical body. Also, the tobacco material and the susceptor 110 may be cut together to form the tobacco rod 21 .

The filter rod 22 may be disposed on one side of the tobacco rod 21 . The filter rod 22 may consist of a plurality of segments. In one embodiment, the filter rod 22 may include a cooling segment 221 for cooling the aerosol, and a filter segment 222 for filtering a predetermined component contained in the aerosol. The cooling segment 221 is disposed on one side of the tobacco rod 21 , and the filter segment 222 is disposed on one side of the cooling segment 221 , and may be disposed on a portion where the user's lips abut. If necessary, the filter rod 22 may further include at least one segment performing other functions.

The filter segment 222 may include at least one capsule 23 . Here, the capsule 23 may perform a function of generating a flavor, or may perform a function of generating an aerosol. For example, the capsule 23 may have a structure in which a liquid containing a fragrance is wrapped with a film. The capsule 23 may have a spherical or cylindrical shape, but is not limited thereto.

The filter rod 22 may be a cellulose acetate filter. On the other hand, the shape of the filter rod 22 is not limited. For example, the filter rod 22 may be a cylindrical rod, or a tubular rod including a hollow therein. Also, the filter rod 22 may be a recess type rod. If the filter rod 22 is composed of a plurality of segments, at least one of the plurality of segments may be manufactured in a different shape.

The cigarette 2 may be wrapped by at least one wrapper 24 . At least one hole through which external air is introduced or internal gas is discharged may be formed in the wrapper 24 . As an example, the cigarette 2 may be wrapped by one wrapper 24 . As another example, the cigarette 2 may be wrapped by two or more wrappers 24 overlappingly. For example, the tobacco rod 21 may be packaged by the first wrapper 241 , and the filter rod 22 may be packaged by the wrappers 243 and 244 . In addition, the entire cigarette 2 may be repackaged by a single wrapper 245 . If the filter rod 22 is composed of a plurality of segments, each segment may be wrapped by wrappers 243 and 244 .

At least one perforation 26 may be formed in the wrappers 241 , 243 , 244 . The perforations 26 may be formed in an area surrounding at least one area of the tobacco rod 21 and the filter rod 22 . 9 shows an example in which the perforations 26 are formed in the area surrounding the filter rod 22 , but according to an embodiment, the perforations 26 may be formed in the area surrounding the tobacco rod 21 .

10 is a view for explaining a cigarette according to another embodiment.

Referring to FIG. 10 , the cigarette 3 may correspond to the cigarette 200 of FIG. 4 . In addition, tobacco rod 31, filter rod 32, cooling segment 321, filter segment 322 and capsule 34 of FIG. 10 are similar to tobacco rod 21, filter rod 22, cooling of FIG. It may correspond to each of the segment 221 , the filter segment 222 , and the capsule 23 . Therefore, redundant descriptions will be omitted below.

The cigarette 3 of FIG. 10 may further include a shear plug 33 . The front plug 33 may be located on the opposite side of the filter rod 32 in the tobacco rod 31 . The shear plug 33 may prevent the tobacco rod 31 from escaping to the outside, and may prevent the aerosol liquefied from the tobacco rod 31 from flowing into the aerosol generating device 100 during smoking.

The diameter and overall length of the cigarette 3 may correspond to the diameter and the overall length of the cigarette 2 of FIG. 9 . For example, the length of the shear plug 33 may be about 7 mm, the length of the tobacco rod 31 may be about 15 mm, the length of the cooling segment 321 may be about 12 mm, and the length of the filter segment 322 may be about 14 mm, but , but not limited thereto.

The cigarette 3 may be wrapped by at least one wrapper 35 . At least one hole through which external air flows or internal gas flows may be formed in the wrapper 35 . For example, the first wrapper 351 wraps the shear plug 33 , the second wrapper 352 wraps the tobacco rod 31 , and the third wrapper 353 wraps the cooling segment 321 . ) may be wrapped, and the filter segment 322 may be wrapped by the fourth wrapper 354 . In addition, the entire cigarette 3 may be repackaged by the fifth wrapper 355 .

In addition, at least one perforation 36 may be formed in the fifth wrapper 355 . The perforations 36 may be formed in an area surrounding at least one area of the tobacco rod 31 and the filter rod 32 . 10 shows an example in which the perforations 36 are formed in the area surrounding the tobacco rod 31 , but according to an embodiment, the perforations 36 may be formed in the area surrounding the filter rod 32 .

11 to 12 are views for explaining the cooling segment included in the cigarette.

11 to 12 show cross-sections of cooling segments 221 , 321 . 11 to 12 , the cooling segments 221 and 321 may include cooling members 1110 and 1120 having different diameters.

11 , the cooling segments 221 , 321 have a first cooling member 1110 having a first diameter ra and a second cooling member having a second diameter rb greater than the first diameter ra. (1120) may be included. One end of the first cooling member 1110 may contact the tobacco rod 21 , and one end of the second cooling member 1120 may contact the filter segments 222 and 322 .

According to an embodiment, as shown in FIG. 12 , the first diameter ra may be larger than the second diameter rb. In other words, the cooling segments 221 , 321 include a first cooling member 1110 having a first diameter ra and a second cooling member 1120 having a second diameter rb smaller than the first diameter ra. may include.

Meanwhile, since the tobacco rods 21 and 31 include the susceptor 110 , the first diameter ra may be set smaller than the diameter of the susceptor 110 . This is to prevent the susceptor 110 from leaving the tobacco rod 21 .

According to the maximum heating temperature of the susceptor 110 , the diameters of the cooling members 1110 and 1120 may be set as shown in FIG. 11 or FIG. 12 .

13 is a flowchart illustrating a method of manufacturing an aerosol-generating article according to an embodiment of the present disclosure.

Referring to FIG. 13 , in step S1310, tobacco rods 21 and 31 including a susceptor 110 in which a plurality of strands are twisted may be provided.

The susceptor 110 includes a plurality of wires 511 , 512 , and 513 and may extend in one direction. For example, one direction may mean a longitudinal direction of the cigarettes 2 and 3 .

The susceptor 110 may include a first wire 511 , a second wire 512 , and a third wire 513 . The first wire 511 , the second wire 512 , and the third wire 513 may have different lengths. For example, the first wire 511 is set to a first length, the second wire 512 is set to a second length longer than the first length, and the third wire 513 is set to a second length longer than the second length. It can be set to 3 lengths.

The susceptor 110 may include a plurality of strands, and may be manufactured in a shape in which at least some of the plurality of strands are twisted with each other. In an embodiment, the susceptor 110 may be manufactured in a shape in which a plurality of wires 511 , 512 , and 513 are twisted with each other. In other words, the first wire 511 , the second wire 512 , and the third wire 513 may be twisted with each other. Accordingly, each of the first wire 511 , the second wire 512 , and the third wire 513 may extend while forming an inclination with respect to the longitudinal direction. In this case, the longitudinal direction may refer to the longitudinal direction of the cigarette 200 and/or the aerosol generating device 100 .

The first wire 511 , the second wire 512 , and the third wire 513 may be formed to be twisted in a predetermined direction with respect to the longitudinal direction. For example, the first wire 511 , the second wire 512 , and the third wire 513 may be formed to be twisted in a clockwise direction. As another example, the first wire 511 , the second wire 512 , and the third wire 513 may be twisted counterclockwise.

Since the first wire 511 , the second wire 512 , and the third wire 513 each have different lengths, at a certain point in time, one wire can no longer be twisted with the other two wires. The manufacturing method of the present disclosure may extend the susceptor 110 by adding a new wire in consideration of such a predetermined time point.

In more detail, a new wire 514 may be provided at a point in time when the first wire 511 can no longer be twisted with the second wire 512 and the third wire 514 . For example, the predetermined time point may be set based on a time point at which the length of the non-twisted portion of the first wire 511 becomes shorter than the reference length. The reference length may be set to 1 cm to 3 cm, but is not limited thereto. The provided new wire 514 may be formed to be twisted with the second wire 512 and the third wire 513 . Accordingly, the susceptor 110 may extend in one direction. The length of the new wire 514 may be set based on the length of the longest wire among the plurality of wires 511 , 512 , and 513 . For example, the length of the new wire 514 may be set to be greater than the length of the third wire 513 .

The plurality of wires 511 , 512 , and 513 may have different diameters. For example, the first wire 511 is set to a first diameter r1, the second wire 512 is set to a second diameter r2 greater than the first diameter r1, and the third wire ( 513 may be set to a third diameter r3 that is larger than the second diameter r2.

The aerosol generating material 810 may be impregnated between the plurality of wires 511 , 512 , 513 . In other words, the aerosol generating material 810 may penetrate between a plurality of wire stands. The aerosol generating material 810 may be sprayed onto the plurality of wire strands, thereby penetrating between the plurality of wire strands.

The manufacturing method of the present disclosure may remove a portion formed so that a predetermined number or more of wires are twisted with each other for control accuracy. For example, the preset number may be set to 4, but is not limited thereto.

In an embodiment, a portion in which a predetermined number or more of wires are twisted together may be detected based on a weight per unit length. In another embodiment, a portion in which a predetermined number or more of wires are twisted with each other may be detected based on a change in capacitance in a state in which a current is induced in the susceptor 110 .

The susceptor 110 is wrapped by a tobacco material, and the tobacco material may be processed into a cylindrical body. Also, the tobacco material and the susceptor 110 may be cut together to form the tobacco rod 21 .

In step S1320, the filter rods 22 and 32 disposed on one side of the tobacco rods 21 and 31 may be provided.

In one embodiment, the filter rods 22 and 23 may include cooling segments 221 and 321 for cooling the aerosol, and filter segments 222 and 322 for filtering predetermined components contained in the aerosol.

The cooling segments 221 , 321 through which the aerosol is passed have a first cooling member 1110 having a first diameter ra and a second cooling member 1120 having a second diameter rb different from the first diameter ra. ) may be included.

According to an embodiment, the step of providing a shear plug 33 disposed on the other side of the tobacco rods 21 and 31 before the step S1310 may be further included. The shear plug 33 may prevent the tobacco rod 31 from escaping to the outside, and may prevent the aerosol liquefied from the tobacco rod 31 from flowing into the aerosol generating device 100 during smoking.

In step S1330 , the tobacco rods 21 and 31 and the filter rods 22 and 32 may be wrapped by the wrappers 24 and 35 .

Perforations 26 and 36 may be formed in an area surrounding at least one area of the tobacco rods 21 and 31 and the filter rods 22 and 32 .

Those of ordinary skill in the art related to the present embodiment will understand that it can be implemented in a modified form within a range that does not deviate from the essential characteristics of the above description. Therefore, the disclosed methods are to be considered in an illustrative rather than a restrictive sense. The scope of the present invention is indicated in the claims rather than the foregoing description, and all differences within an equivalent scope should be construed as being included in the present invention.

2, 3, 200: cigarette
21, 31: Tobacco Load
22, 32: load filter
24, 35: Rapper
100: aerosol generating device
110: susceptor

Claims (11)

providing a tobacco rod comprising a susceptor formed in a form in which a plurality of strands are twisted;
providing a filter rod disposed on one side of the tobacco rod; and
and packaging the tobacco rod and the filter rod by a wrapper. According to claim 1,
The step of providing the tobacco rod
providing a susceptor extending in one direction;
wrapping the susceptor with tobacco material and processing the tobacco material into a cylinder; and
A method of manufacturing an aerosol-generating article comprising; cutting the cylindrical body. 3. The method of claim 2,
The step of providing the susceptor comprises
providing a plurality of wires having different lengths;
forming the plurality of wires to be twisted in a predetermined direction; and
A method of manufacturing an aerosol-generating article comprising; extending the twisted form by adding a new wire. 4. The method of claim 3,
wherein the plurality of wires have different diameters from each other. 3. The method of claim 2,
The step of providing the susceptor comprises
The method of manufacturing an aerosol-generating article further comprising; impregnating an aerosol-generating material into the susceptor formed in a twisted form of the plurality of strands. 3. The method of claim 2,
The step of cutting the cylindrical body
A method of manufacturing an aerosol-generating article comprising removing a portion formed so that a predetermined number or more of wires are twisted with each other. According to claim 1,
The step of providing the filter rod comprises
providing a cooling segment that cools the aerosol; and
A method of manufacturing an aerosol-generating article comprising; providing a filter segment disposed on one side of the cooling segment to filter a predetermined component contained in the aerosol. 8. The method of claim 7,
The step of providing the cooling segment comprises:
providing a first cooling member through which the aerosol is passed and having a first diameter; and
providing a second cooling member through which the aerosol is passed and having a second diameter different from the first diameter. According to claim 1,
prior to providing the tobacco rod
The method of manufacturing an aerosol-generating article further comprising; providing a shear plug disposed on the other side of the tobacco rod. According to claim 1,
The step of packaging by the wrapper is
and forming a perforation in an area surrounding at least one area of the tobacco rod and the filter rod. Tobacco rod comprising a susceptor formed in a form in which a plurality of strands are twisted;
a filter rod disposed on one side of the tobacco rod; and
an aerosol-generating article comprising a wrapper for wrapping the tobacco rod and the filter rod.

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