Aerosol-generating article and method of making the same

Abstract

According to the present application, the manufacturing method of the aerosol-generating article includes: providing a tobacco rod, wherein the tobacco rod includes a heat-sensitive body formed in the shape of a plurality of twisted wires; providing a filter rod, which is arranged on one side of the tobacco rod; and wrapping the tobacco rod and the filter rod with wrapping paper.

Description

Technical Field

[0001] The present invention relates to an aerosol generating article and a method for manufacturing the same, and more particularly to an aerosol generating article capable of increasing the cutting sensitivity and heating efficiency of a heat-sensitive material and a method for manufacturing the same. Background Art

[0002] Recently, there has been an increasing demand for alternative methods that overcome the disadvantages of conventional cigarettes. For example, there has been an increasing demand for methods that generate aerosol by heating an aerosol-generating substance in a cigarette or a liquid storage portion rather than burning the cigarette.

[0003] A different heating method is being proposed, in which a heater made of a resistive material is placed inside or outside a cigarette contained in an aerosol generating device and electricity is supplied to the heater to heat the cigarette. In particular, research is actively underway into heating cigarettes using induction heating.

[0004] This induction heating method heats the heat-sensitive body through an induction coil, or the existing heat-sensitive body is formed of a single body of the same volume, which has the problems of being difficult to process (for example, cutting) and having reduced heating efficiency. Summary of the Invention

[0005] Problems to be solved by the invention

[0006] The technical problem to be solved by the present invention is to provide an aerosol generating article and a method for producing the same, which can improve the ease of manufacture and the heat-generating effect of a heat-sensitive material.

[0007] The technical problems of the present invention are not limited to the technical problems described above, and other technical problems can be inferred from the following embodiments.

[0008] Means used to solve problems

[0009] According to one aspect, a method for manufacturing an aerosol-generating article includes: providing a tobacco rod, the tobacco rod including a heat-sensitive body formed into a shape formed by twisting a plurality of wires; providing a filter rod, the filter rod being arranged on one side of the tobacco rod; and wrapping the tobacco rod and the filter rod with wrapping paper.

[0010] According to one aspect, a method for manufacturing an aerosol-generating article includes: a step of providing a tobacco rod, wherein the tobacco rod includes a heat-sensitive body formed into a shape formed by twisting multiple wires; a step of providing a filter rod, wherein the filter rod is arranged on one side of the tobacco rod; and a step of wrapping the tobacco rod and the filter rod with wrapping paper, wherein the step of providing the tobacco rod includes: a step of providing a heat-sensitive body, wherein the heat-sensitive body extends in one direction; a step of wrapping the heat-sensitive body with a tobacco material and processing the tobacco material into a cylinder; and a step of cutting the cylinder, wherein the step of providing the heat-sensitive body includes: a step of providing multiple wires having different lengths from each other; a step of forming the multiple wires into a shape twisted along a preset direction; and a step of extending the twisted shape by adding new wires.

[0011] Effects of the Invention

[0012] The method for producing an aerosol-generating article according to the present invention has the advantage that the heat-sensitive member is easily cut because the heat-sensitive member is produced in a twisted manner.

[0013] Furthermore, the method for manufacturing an aerosol-generating article according to the present invention has the advantage that, since a twisted heat-sensitive body is wrapped with tobacco material, the tobacco material is processed into a cylindrical body, and the heat-sensitive body is subsequently cut together with the tobacco material, the production speed is significantly increased, and mass production can be facilitated.

[0014] Furthermore, the method for producing an aerosol-generating article according to the present invention has the advantage that, since the aerosol-generating substance is impregnated into the heat-sensitive body produced by a twisted method, the heat generation efficiency is significantly improved due to the increase in the heat generation area.

[0015] The effects of the invention are not limited to the above-described contents, and this specification also includes various effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figures 1 to 2 This is a diagram showing an induction heating aerosol generating device.

[0017] Figures 3 and 4 This is a diagram showing an example of a cigarette inserted into an aerosol generating device.

[0018] Figure 5 Is used to illustrate Figure 4 A diagram showing a method for manufacturing a heat-sensitive body included in a cigarette.

[0019] Figure 6 This is a diagram for explaining the diameters of the plurality of wires included in the thermal conductor.

[0020] Figure 7This is a diagram for explaining a method of removing a portion of a heat-sensitive member.

[0021] Figure 8 This is a diagram for explaining a method of impregnating a heat-sensitive body with an aerosol-generating substance.

[0022] Figure 9 It is a diagram for explaining a cigarette according to an embodiment.

[0023] Figure 10 This is a diagram for explaining a cigarette according to another embodiment.

[0024] Figures 11 to 12 It is a diagram for explaining the cooling section included in a cigarette.

[0025] Figure 13 This is a flowchart for explaining a method for manufacturing an aerosol-generating article according to an embodiment of the present invention.

[0026] Specific preferred embodiment

[0027] According to one aspect, a method for manufacturing an aerosol-generating article includes: providing a tobacco rod, the tobacco rod including a heat-sensitive body formed into a shape formed by twisting a plurality of wires; providing a filter rod, the filter rod being arranged on one side of the tobacco rod; and wrapping the tobacco rod and the filter rod with wrapping paper.

[0028] In addition, the step of providing the tobacco rod includes: providing a heat-sensitive body, the heat-sensitive body extending in one direction; wrapping the heat-sensitive body with tobacco material and processing the tobacco material into a cylinder; and cutting the cylinder.

[0029] Furthermore, the step of providing the heat-sensitive body includes providing a plurality of wires having different lengths from each other, forming the plurality of wires into a shape twisted in a predetermined direction, and extending the twisted shape by adding a new wire.

[0030] In addition, the plurality of wires have different diameters from each other.

[0031] Furthermore, the step of providing a heat-sensitive member further includes the step of impregnating the heat-sensitive member formed into a shape in which a plurality of the twisted filaments are formed with an aerosol-generating substance.

[0032] In addition, the step of cutting the cylindrical body includes a step of removing a portion formed into a shape in which a predetermined number or more of wires are twisted together.

[0033] In addition, the step of providing a filter rod includes: providing a cooling segment for cooling the aerosol; and providing a filtering segment disposed on one side of the cooling segment for filtering specified components contained in the aerosol.

[0034] In addition, the step of providing a cooling section includes the steps of providing a first cooling member capable of allowing the aerosol to pass therethrough and having a first diameter; and providing a second cooling member capable of allowing the aerosol to pass therethrough and having a second diameter different from the first diameter.

[0035] In addition, the method for manufacturing an aerosol-generating article further comprises the step of providing a front end plug before the step of providing the tobacco rod, wherein the front end plug is disposed on the other side of the tobacco rod.

[0036] In addition, the step of wrapping with wrapping paper includes the step of forming perforations in an area surrounding at least any one of the tobacco rod and the filter rod.

[0037] According to another aspect, an aerosol-generating article includes a tobacco rod having a heat-sensitive body formed into a shape of a plurality of twisted filaments; a filter rod disposed on one side of the tobacco rod; and wrapping paper for wrapping the tobacco rod and the filter rod. DETAILED DESCRIPTION

[0038] The terms used in the embodiments are currently widely used terms, as much as possible, in consideration of the effects of the present invention. However, the terms may be changed according to the intentions of those skilled in the art, precedents, or the emergence of new technologies in the field. In addition, the applicant may arbitrarily select certain terms in specific circumstances, and in such cases, the meaning of the selected terms will be described in detail in the explanatory part of this specification. Therefore, the terms used in the present invention should be defined based on the meaning of the terms and the content of the entire specification, rather than simply the term names.

[0039] Throughout this specification, when a component is referred to as "comprising" a component, unless otherwise specified, it indicates that the component may also include other components, not that it excludes other components. Furthermore, terms such as "unit" and "module" used in this specification refer to a unit for performing at least one function or operation, which may be implemented by hardware, software, or a combination of hardware and software.

[0040] Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention is not limited to the embodiments described here, but can be implemented in various different ways.

[0041] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0042] Figures 1 to 2 This is a diagram showing an induction heating aerosol generating device.

[0043] Reference Figure 1 The aerosol generating device 100 may include a heat-sensitive body 110, a receiving space 120, a coil unit 130, a battery 140 and a control unit 150. According to an embodiment, the heat-sensitive body 110 may be included in the cigarette ( Figures 3 and 4 In this case, if Figure 2 As shown, the aerosol generating device 100 may not include the heat-sensitive body 110 .

[0044] Figures 1 to 2 The aerosol generating device 100 shown in FIG. 1 shows the components related to the present embodiment. Therefore, a person skilled in the art related to the present embodiment will understand that, in addition to Figures 1 to 2 In addition to the components shown, the aerosol generating device 100 may further include other common components.

[0045] The aerosol generating device 100 can generate aerosol by heating the cigarette 200 contained therein using induction heating. Induction heating may be a method in which an alternating magnetic field, which periodically changes direction, is applied to a magnet that generates heat due to an external magnetic field, thereby generating heat from the magnet.

[0046] When an alternating magnetic field is applied to a magnet, energy loss due to eddy current loss and hysteresis loss may occur in the magnet, and this lost energy may be released from the magnet as heat. The greater the amplitude or frequency of the alternating magnetic field applied to the magnet, the more heat energy may be released from the magnet. The aerosol-generating device 100 releases heat energy from the magnet by applying an alternating magnetic field to the magnet, and this heat energy may be transferred to the cigarette 200.

[0047] The magnetic body that generates heat by an external magnetic field may be a susceptor 110. The susceptor 110 may be formed in a block, sheet, or strip shape.

[0048] The heat-sensitive body 110 may include metal or carbon. The heat-sensitive body 110 may include at least one of ferrite, ferromagnetic alloy, stainless steel, and aluminum. In addition, the heat-sensitive body 110 may include ceramics such as graphite, molybdenum, silicon carbide, niobium, nickel alloy, metal film, zirconium dioxide, etc., transition metals such as nickel (Ni) or cobalt (Co), and metalloids such as boron (B) or phosphorus (P).

[0049] The aerosol generating device 100 may include a housing space 120 for housing a cigarette 200. The housing space 120 may include an opening that opens to the outside of the housing space 120, so that the cigarette 200 can be housed in the aerosol generating device 100. The cigarette 200 can be housed in the aerosol generating device 100 from the outside of the housing space 120 through the opening of the housing space 120 toward the inside of the housing space 120.

[0050] like Figure 1 As shown, the heat-sensitive body 110 can be disposed at the inner end of the accommodation space 120. The heat-sensitive body 110 can be attached to the bottom surface formed at the inner end of the accommodation space 120. The cigarette 200 can be inserted into the heat-sensitive body 110 from the upper end thereof and accommodated in the bottom surface of the accommodation space 120.

[0051] Or, as Figure 2 As shown, the aerosol generating device 100 may not include the heat-sensitive body 110. In this case, the heat-sensitive body 110 may be included in the cigarette 200.

[0052] The aerosol generating device 100 may include a coil unit 130 for applying an alternating magnetic field to the heat-sensitive body 110 to induce magnetism to the heat-sensitive body 110. The coil unit 130 may include at least one coil.

[0053] The coil can be implemented as a solenoid. The coil can be a solenoid wound along the side of the storage space 120, and the cigarette 200 can be accommodated in the interior space of the solenoid. The material of the wire constituting the solenoid can be copper (Cu). However, this is not limiting. Any of silver (Ag), gold (Au), aluminum (Al), tungsten (W), zinc (Zn), and nickel (Ni), or an alloy containing at least one of these materials, which have low resistivity and allow high current to flow, can be used as the material of the wire constituting the solenoid.

[0054] The battery 140 can supply power to the coil unit 130. The battery 140 can be a lithium iron phosphate (LiFePO4) battery, but is not limited thereto. For example, the battery can be a lithium cobalt oxide (LiCoO2) battery, a lithium titanate battery, or the like.

[0055] The control unit 150 can control the power supplied to the coil unit 130. When the coil unit 130 includes multiple coils, the control unit 150 can change the amplitude and frequency of the AC current supplied to the coils. In addition, the control unit 150 can change the magnitude of the DC current supplied to the coils.

[0056] The control unit 150 can induction heat the heat-sensitive body 110 by controlling the amplitude and frequency of the alternating current. Alternatively, the control unit 150 can apply induced magnetism to the heat-sensitive body 110 by controlling the magnitude of the direct current. The control unit 150 detects changes in the magnetism of the heat-sensitive body 110 caused by induction heating and calculates the temperature of the heat-sensitive body 110 based on the detection results.

[0057] Figures 3 and 4 This is a diagram showing an example of a cigarette inserted into an aerosol generating device.

[0058] In more detail, Figure 3 1 is a diagram showing an example of a cigarette 200 inserted into the aerosol generating device 100 when the heat-sensitive body 110 is provided in the aerosol generating device 100. Figure 4 1 is a diagram showing an example of a cigarette 200 inserted into the aerosol generating device 100 when the heat sensitive body 110 is provided in the cigarette 200 .

[0059] Reference Figure 3 The cigarette 200 can be accommodated in the accommodation space 120 along the length of the cigarette 200. The heat-sensitive element 110 can be inserted into the cigarette 200 accommodated in the aerosol generating device 100. As the heat-sensitive element 110 is inserted into the cigarette 200, the tobacco rod 210 can come into contact with the heat-sensitive element 110. The heat-sensitive element 110 can have a structure extending along the length of the aerosol generating device 100 to enable insertion into the cigarette 200.

[0060] The heat-sensitive body 110 may be located in the center of the accommodation space 120 so as to be inserted into the center of the cigarette 200. Figure 3 In the figure, a single heat-sensitive body 110 is shown, but the invention is not limited thereto. In other words, the aerosol generating device 100 of the present invention may include a plurality of heat-sensitive bodies 110, which extend along the length of the aerosol generating device 100 to be inserted into the cigarette 200 and are arranged parallel to each other.

[0061] The coil portion 130 includes at least one coil that can be wound along the outer surface of the accommodating space 120 and extend in the longitudinal direction. The coil extending in the longitudinal direction can be disposed on the outer surface of the accommodating space 120. The coil can extend in the longitudinal direction to a length corresponding to the heat-sensitive element 110 and be positioned at a position corresponding to the heat-sensitive element 110.

[0062] Reference Figure 4 The cigarette 200 can be accommodated in the accommodation space 120 along the length direction of the cigarette 200. As the cigarette 200 is inserted into the accommodation space 120, the heat-sensitive body 110 can be surrounded by the coil portion 130.

[0063] The heat-sensitive body 110 can be located in the center of the tobacco rod 210 to transfer heat evenly. Figure 4 In the figure, a single heat-sensitive body 110 is shown, but the invention is not limited thereto. In other words, the aerosol generating device 100 of the present invention may include a plurality of heat-sensitive bodies 110 provided in the cigarette 200 .

[0064] like Figure 5 As stated, Figure 4 The heat-sensitive body 110 can be manufactured in a twisted manner. According to an embodiment, Figure 3 The heat-sensitive body 110 can also be manufactured in a twisting manner.

[0065] The coil portion 130 includes at least one coil that can be wound along the outer surface of the accommodating space 120 and extend in the longitudinal direction. The coil extending in the longitudinal direction can be disposed on the outer surface of the accommodating space 120. The coil can extend in the longitudinal direction to a length corresponding to the heat-sensitive element 110 and be positioned at a position corresponding to the heat-sensitive element 110.

[0066] Figure 5 Is used to illustrate Figure 4 A diagram showing a method for manufacturing a heat-sensitive body included in a cigarette.

[0067] Reference Figure 5 The cigarette 200 may include a heat-sensitive body 110. The cigarette 200 may be referred to as an aerosol-generating article.

[0068] The heat-sensitive body 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). Furthermore, the wires 511, 512, and 513 may include at least one of ceramics such as graphite, molybdenum, silicon carbide, niobium, a nickel alloy, a metal film, and zirconium dioxide; transition metals such as nickel (Ni) or cobalt (Co); and metalloids such as boron (B) or phosphorus (P). The cross-sections of the plurality of wires 511, 512, and 513 may be circular.

[0069] In one embodiment, the heat-sensitive body 110 may include three wires 511, 512, and 513. Hereinafter, an example in which the heat-sensitive body 110 includes three wires 511, 512, and 513 will be described, but the number of wires is not limited thereto.

[0070] The thermal conductor 110 may include a first line 511, a second line 512, and a third line 513. The first line 511, the second line 512, and the third line 513 may have different lengths. For example, the first line 511 may be set to a first length, the second line 512 may be set to a second length longer than the first length, and the third line 513 may be set to a third length longer than the second length.

[0071] The heat-sensitive body 110 can be manufactured in a twisted shape with multiple strands 511, 512, and 513. In other words, the first strand 511, the second strand 512, and the third strand 513 can be twisted together. Thus, the first strand 511, the second strand 512, and the third strand 513 each extend and tilt in a single direction. In this case, the single direction can refer to the longitudinal direction of the cigarette 200. The twisted shape of the heat-sensitive body 110 offers the advantages of easier cutting and increased tensile strength compared to a single body of the same volume.

[0072] The first wire 511, the second wire 512, and the third wire 513 may be twisted in a predetermined direction. For example, the first wire 511, the second wire 512, and the third wire 513 may 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 in a counterclockwise direction.

[0073] The first thread 511 , the second thread 512 , and the third thread 513 may be twisted in a predetermined direction and extend in one direction. For example, the one direction may be the length direction of the cigarette 200 .

[0074] Since the first wire 511, the second wire 512, and the third wire 513 have different lengths, under certain circumstances, one wire may not be able to be twisted with the other two wires. Taking this into account, the manufacturing method of the present invention can extend the heat-sensitive body 110 by adding new wires.

[0075] More specifically, since first wire 511 is the shortest among the plurality of wires 511, 512, and 513, a new wire 514 can be provided when first wire 511 can no longer be twisted with second wire 512 and third wire 513. For example, the predetermined condition can be determined based on the length of the untwisted portion of first wire 511 being less than a reference length. The reference length can be set to, but is not limited to, 1 cm to 3 cm.

[0076] On the other hand, the new wire 514 can be twisted with the second wire 512 and the third wire 513. Thus, the thermal conductor 110 can extend in one direction. The length of the new wire 514 can be set based on the length of the longest wire among the multiple wires 511, 512, and 513. For example, the length of the new wire 514 can be set to be longer than the third wire 513.

[0077] Since the first, second, and third wires 511, 512, and 513 are provided with different lengths, the lengths of the multiple new wires 514 added later can be set to be the same. In other words, the heat-sensitive body 110 of the present invention can be manufactured in an infinite continuous supply manner, thereby significantly improving production speed.

[0078] Figure 6 This is a diagram for explaining the diameters of the plurality of wires included in the heat-sensitive body.

[0079] Figure 6 The cross section of the heat-sensitive body 110 is schematically shown. Figure 6 The plurality of wires 511, 512, and 513 may have different diameters. For example, the first wire 511 may have a first diameter r1, the second wire 512 may have a second diameter r2 larger than the first diameter r1, and the third wire 513 may have a third diameter r3 larger than the second diameter r2.

[0080] Since the diameters of the plurality of wires 511, 512, and 513 are set to be different from each other, the porosity can be increased. In addition, as the porosity increases, the ability to retain the aerosol-forming substance described below can be increased.

[0081] Figure 7 This is a diagram for explaining a method of removing a portion of a heat-sensitive member.

[0082] Figure 7 The cross sections 710 and 720 of the heat-sensitive body 110 are schematically shown. Figure 7 Since the heat-sensitive body 110 includes three lines 511, 512, and 513, three lines 511, 512, and 513 can be observed when observing the cross section 710 of the heat-sensitive body 110. However, according to the above-mentioned unlimited supply method, four or more lines 511, 512, 513, and 514 can be observed in the cross section 720 of a portion of the heat-sensitive body 110.

[0083] In order to achieve control accuracy, the manufacturing method of the present invention can remove the portion formed into a shape formed by twisting more than a preset number of wires. For example, the preset number can be set to 4, but is not limited thereto.

[0084] In one embodiment, a portion formed by twisting a predetermined number of wires can be detected based on weight per unit length. In another embodiment, a portion formed by twisting a predetermined number of wires can be detected based on capacitance changes while an induction current is applied to the thermal conductor 110.

[0085] Figure 8 This is a diagram for explaining a method of impregnating a heat-sensitive body with an aerosol-generating substance.

[0086] Reference Figure 8 The heat-sensitive body 110 can be formed into a twisted shape of the first strand 511, the second strand 512, and the third strand 513. The aerosol-generating substance 810 can be impregnated between the strands 511, 512, and 513. In other words, the aerosol-generating substance 810 can penetrate between the strands. The aerosol-generating substance 810 can be injected into the strands by spraying the strands.

[0087] The aerosol-forming substance 810 may include a slurry stock solution, glycerin, etc. Depending on the embodiment, the aerosol-forming substance 810 may include any one of water, solvents, ethanol, plant extracts, spices, flavoring agents, or vitamin mixtures, or a mixture of these ingredients. Flavoring agents may include, but are not limited to, menthol, peppermint, spearmint oil, various fruity aromas, etc. Flavoring agents may include ingredients that can provide a variety of aromas or flavors to the user. The vitamin mixture may be a mixture containing at least one of vitamin A, vitamin B, vitamin C, and vitamin E, but is not limited to this. In addition, the aerosol-forming substance 810 may include aerosol-forming agents such as glycerin and propylene glycol.

[0088] For example, aerosol-forming substance 810 may include a solution of glycerol and propylene glycol in any weight ratio to which a nicotine salt is added. Aerosol-forming substance 810 may include two or more nicotine salts. Nicotine salts may be formed by adding a suitable acid, including an organic acid or an inorganic acid, to nicotine. Nicotine may be naturally occurring nicotine or synthetic nicotine, and may have any suitable weight concentration relative to the total weight of the aerosol-forming substance 810 solution.

[0089] The acid used to form the nicotine salt can be appropriately selected taking into account the blood nicotine absorption rate, the operating temperature of the aerosol generating device 100, the flavor or taste, the solubility, etc. For example, the acid used to form the nicotine salt can be a single acid selected from the group consisting of 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, saccharinic acid, malonic acid, or malic acid, or a mixture of two or more acids selected from the group, but is not limited thereto.

[0090] Since the heat-sensitive body 110 is formed by twisting multiple filaments together, the aerosol-generating substance 810 can penetrate between the filaments of the heat-sensitive body, thereby increasing the heating area. In addition, the increased heating area can significantly improve the heating efficiency.

[0091] Figure 9 It is a diagram for explaining a cigarette according to an embodiment.

[0092] Reference Figure 9 , the cigarette 2 includes a tobacco rod 21 and a filter rod 22. The cigarette 2 may correspond to Figure 4 200 of cigarettes.

[0093] The tobacco rod 21 includes an aerosol-generating substance. For example, the aerosol-generating substance may include at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol, but is not limited thereto. Furthermore, the tobacco rod 21 may contain other additives such as flavoring agents, humectants, and / or organic acids. Furthermore, a flavoring liquid such as menthol or a humectant may be added to the tobacco rod 21 by spraying the tobacco rod 21.

[0094] The tobacco rod 21 can be made in a variety of ways. For example, the tobacco rod 21 can be made into a tobacco sheet or a tobacco strand. In addition, the tobacco rod 21 can be made of shredded tobacco made by finely cutting tobacco sheets. In addition, the tobacco rod 21 can be surrounded by a heat-conductive material. For example, the heat-conductive material can be a metal foil such as aluminum foil, but is not limited thereto. As an example, the heat-conductive material surrounding the tobacco rod 21 can evenly disperse the heat transferred to the tobacco rod 21, thereby increasing the thermal conductivity applied to the tobacco rod, thereby improving the taste of the tobacco. In addition, the heat-conductive material surrounding the tobacco rod 21 can function as a heat-sensitive body heated by the induction heating heater.

[0095] On the other hand, the tobacco rod 21 may further include an additional heat-sensitive body 110 in addition to the heat-conducting material surrounding the tobacco rod 21 .

[0096] The heat-sensitive body 110 may be formed into a shape of a plurality of twisted threads. The heat-sensitive body 110 may be disposed at the center of the tobacco rod 21 and extend along the length of the tobacco rod 21. The length of the heat-sensitive body 110 may be set to be less than the length of the tobacco rod 21. Figure 9 Although an example is shown in which the length of the heat-sensitive body 110 is set to be the same as the length of the tobacco rod 21 , the length of the heat-sensitive body 110 may be set to be smaller than the length of the tobacco rod 21 according to an embodiment.

[0097] The heat-sensitive body 110 is wrapped by tobacco material, and tobacco material can be processed into a cylinder. In addition, tobacco material and heat-sensitive body 110 can be cut together to form tobacco rod 21.

[0098] The filter rod 22 can be set on one side of the tobacco rod 21. The filter rod 22 can be composed of multiple segments. In one embodiment, the filter rod 22 may include: a cooling segment 221 for cooling the aerosol; and a filtering segment 222 for filtering the specified components contained in the aerosol. The cooling segment 221 can be set on one side of the tobacco rod 21, and the filtering segment 222 is set on one side of the cooling segment 221 and is set at the part that contacts the user's lips. As needed, the filter rod 22 may also include at least one segment that performs other functions.

[0099] Filtration section 222 may include at least one capsule 23. Capsule 23 can function as both a fragrance generator and an aerosol generator. For example, capsule 23 may be a structure in which a liquid containing fragrance is encapsulated by a membrane. Capsule 23 may have a spherical or cylindrical shape, but is not limited thereto.

[0100] The filter rod 22 can be a cellulose acetate filter. There are no restrictions on the shape of the filter rod 22. For example, the filter rod 22 can be a cylindrical rod or a hollow tubular rod. Alternatively, the filter rod 22 can be a concave rod. If the filter rod 22 is composed of multiple segments, at least one of the multiple segments can be manufactured in a different shape.

[0101] The cigarette 2 can be wrapped in at least one wrapper 24. The wrapper 24 can be formed with at least one hole for the flow of outside air or the flow of internal gas. As an example, the cigarette 2 can be wrapped in a single wrapper 24. As another example, the cigarette 2 can also be wrapped in two or more overlapping wrappers 24. For example, the tobacco rod 21 can be wrapped in a first wrapper 241, and the filter rod 22 can be wrapped in wrappers 243 and 244. In addition, the entire cigarette 2 can be wrapped again in a single wrapper 245. If the filter rod 22 is composed of multiple segments, each segment can be wrapped in wrappers 243 and 244.

[0102] At least one perforation 26 may be formed in the wrapping paper 241, 243, 244. The perforation 26 may be formed in an area surrounding at least any one of the tobacco rod 21 and the filter rod 22. Figure 9 An example is shown in which the perforation 26 is formed in a region surrounding the filter rod 22 , but according to an embodiment, the perforation 26 may be formed in a region surrounding the tobacco rod 21 .

[0103] Figure 10 This is a diagram for explaining a cigarette according to another embodiment.

[0104] Reference Figure 10 , cigarette 3 can correspond to Figure 4 200 of cigarettes. In addition, Figure 10 The tobacco rod 31, filter rod 32, cooling section 321, filter section 322 and capsule 34 can be connected with Figure 9 The tobacco rod 21, the filter rod 22, the cooling section 221, the filter section 222 and the capsule 23 correspond to each other. Therefore, repeated description will be omitted below.

[0105] Figure 10 The cigarette 3 may further include a front insert 33. The front insert 33 may be located on the side of the tobacco rod 31 facing the filter rod 32. The front insert 33 prevents the tobacco rod 31 from escaping and prevents liquefied aerosol from flowing from the tobacco rod 31 into the aerosol generating device 100 during smoking.

[0106] The diameter and overall length of the cigarette 3 may correspond to Figure 9For example, the length of the front end plug 33 may be about 7 mm, the length of the tobacco rod 31 may be about 15 mm, the length of the cooling section 321 may be about 12 mm, and the length of the filter section 322 may be about 14 mm, but are not limited thereto.

[0107] The cigarette 3 may be wrapped in at least one wrapping paper 35. The wrapping paper 35 may have at least one hole formed therein for air to flow in or gas to flow out. For example, the front insert 33 may be wrapped in a first wrapping paper 351, the tobacco rod 31 may be wrapped in a second wrapping paper 352, the cooling section 321 may be wrapped in a third wrapping paper 353, and the filter section 322 may be wrapped in a fourth wrapping paper 354. Furthermore, the entire cigarette 3 may be wrapped again in a fifth wrapping paper 355.

[0108] In addition, at least one perforation 36 may be formed in the fifth wrapping paper 355. The perforation 36 may be formed in an area surrounding at least any one of the tobacco rod 31 and the filter rod 32. Figure 10 An example is shown in which the perforation 36 is formed in a region surrounding the tobacco rod 31 , but according to an embodiment, the perforation 36 may be formed in a region surrounding the filter rod 32 .

[0109] Figures 11 to 12 It is a diagram for explaining the cooling section included in a cigarette.

[0110] exist Figures 11 to 12 , a cross section of the cooling section 221, 321 is shown. Figures 11 to 12 , the cooling sections 221 , 321 may include cooling members 1110 , 1120 having different diameters from each other.

[0111] like Figure 11 As shown, the cooling section 221, 321 may include: a first cooling member 1110 having a first diameter ra; and a second cooling member 1120 having a second diameter rb larger than the first diameter ra. 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 section 222, 322.

[0112] According to the embodiment, Figure 12 As shown, the first diameter ra may also be formed to be larger than the second diameter rb. In other words, the cooling section 221, 321 may 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.

[0113] On the other hand, since the tobacco rods 21 and 31 include the heat-sensitive body 110 , the first diameter ra can be set to be smaller than the diameter of the heat-sensitive body 110 . This is to prevent the heat-sensitive body 110 from being separated from the tobacco rod 21 .

[0114] like Figure 11 or Figure 12 As shown, the diameters of the cooling members 1110 and 1120 can be set according to the maximum heating temperature of the heat-sensitive body 110.

[0115] Figure 13 This is a flowchart for explaining a method for manufacturing an aerosol-generating article according to an embodiment of the present invention.

[0116] Reference Figure 13 In step S1310 , a tobacco rod 21 , 31 may be provided, which includes a heat-sensitive body 110 formed in a shape of a plurality of twisted wires.

[0117] The heat-sensitive body 110 may include a plurality of lines 511 , 512 , and 513 , and extend in one direction. For example, the one direction may be the length direction of the cigarettes 2 , 3 .

[0118] The heat-sensitive body 110 may include a first line 511, a second line 512, and a third line 513. The first line 511, the second line 512, and the third line 513 may have different lengths. For example, the first line 511 may be set to a first length, the second line 512 may be set to a second length greater than the first length, and the third line 513 may be set to a third length greater than the second length.

[0119] The heat-sensitive body 110 includes multiple threads, and at least some of the threads can be twisted together. In one embodiment, the heat-sensitive body 110 can be twisted together. In other words, the first thread 511, the second thread 512, and the third thread 513 can be twisted together. Therefore, the first thread 511, the second thread 512, and the third thread 513 can extend at an angle relative to the longitudinal direction. In this case, the longitudinal direction can refer to the length of the cigarette 200 and / or the aerosol generating device 100.

[0120] The first, second, and third threads 511, 512, and 513 may be twisted in a predetermined direction relative to their length. For example, the first, second, and third threads 511, 512, and 513 may be twisted in a clockwise direction. As another example, the first, second, and third threads 511, 512, and 513 may be twisted in a counterclockwise direction.

[0121] Because the first, second, and third wires 511, 512, and 513 have different lengths, any one wire may not be able to be further twisted with the other two wires under a given condition (at a given time point). Taking this into account, the manufacturing method of the present invention can extend the heat-sensitive body 110 by adding new wires.

[0122] More specifically, if the first wire 511 cannot be further twisted with the second wire 512 and the third wire 514, a new wire 514 can be provided. For example, a predetermined condition can be set based on a situation where the length of the portion of the first wire 511 that cannot be twisted becomes shorter than a reference length. The reference length can be set to, but is not limited to, 1 cm to 3 cm. The provided new wire 514 can be formed into a shape in which the second wire 512 and the third wire 513 are twisted together. As a result, the heat-sensitive body 110 can extend in one direction. The length of the new wire 514 can be set based on the length of the longest wire among the multiple wires 511, 512, and 513. For example, the length of the new wire 514 can be set to be greater than the length of the third wire 513.

[0123] The plurality of wires 511, 512, 513 may have different diameters. For example, the first wire 511 may have a first diameter r1, the second wire 512 may have a second diameter r2 larger than the first diameter r1, and the third wire 513 may have a third diameter r3 larger than the second diameter r2.

[0124] The aerosol generating substance 810 may be impregnated between the plurality of strands 511, 512, 513. In other words, the aerosol generating substance 810 may penetrate between the plurality of strands. The aerosol generating substance 810 may be penetrated between the plurality of strands by spraying the aerosol generating substance 810 onto the plurality of strands.

[0125] In order to achieve control accuracy, the manufacturing method of the present invention can remove the portion formed into a shape formed by twisting more than a preset number of wires. For example, the preset number can be set to 4, but is not limited thereto.

[0126] In one embodiment, a portion formed by twisting a predetermined number of wires can be detected based on weight per unit length. In another embodiment, a portion formed by twisting a predetermined number of wires can be detected based on capacitance changes while an induction current is applied to the thermal conductor 110.

[0127] The heat-sensitive body 110 is wrapped by tobacco material, and tobacco material can be processed into a cylinder. In addition, tobacco material and heat-sensitive body 110 can be cut together to form tobacco rod 21.

[0128] In step S1320, a filter rod 22, 32 disposed on one side of the tobacco rod 21, 31 may be provided.

[0129] In one embodiment, the filter rods 22 and 23 may include: a cooling section 221 and 321 for cooling the aerosol; and a filtering section 222 and 322 for filtering specified components contained in the aerosol.

[0130] The cooling section 221, 321 may include: a first cooling member 1110 for allowing aerosol to pass therethrough and having a first diameter ra; and a second cooling member 1120 having a second diameter rb different from the first diameter ra.

[0131] According to an embodiment, before step S1310, a step of providing a front end plug 33 disposed on the other side of the tobacco rods 21 and 31 may be further included. The front end plug 33 can prevent the tobacco rod 31 from detaching from the outside and can prevent liquefied aerosol from flowing from the tobacco rod 31 into the aerosol generating device 100 during smoking.

[0132] In step S1330 , the tobacco rods 21 , 31 and the filter rods 22 , 32 may be wrapped with wrapping paper 24 , 35 .

[0133] The perforations 26 , 36 may be formed in an area surrounding at least one of the tobacco rods 21 , 31 and the filter rods 22 , 32 .

[0134] As long as a person skilled in the art of the present invention can understand, these embodiments can be implemented in a modified form within the scope of the essential characteristics of the above-mentioned description. Therefore, it should be understood that the disclosed methods are disclosed for the purpose of illustration and are not to be regarded as limiting. The scope of the present invention is set forth in the appended claims rather than in the above description, and all differences within the scope of equivalents should be interpreted as included in the present invention.

Claims

1. A method for producing an aerosol-generating article, wherein: include: The step of providing a tobacco rod, wherein the tobacco rod includes a heat-sensitive body formed into a shape formed by twisting a plurality of wires; The step of providing a filter rod, wherein the filter rod is arranged on one side of the tobacco rod; as well as The step of wrapping the tobacco rod and the filter rod with wrapping paper, The step of providing a tobacco rod comprises: providing a heat-sensitive body, wherein the heat-sensitive body extends in one direction; wrapping the heat-sensitive body with tobacco material and processing the tobacco material into a cylindrical body; and the step of cutting the cylindrical body, The step of providing a heat-sensitive body comprises: providing a plurality of lines having different lengths from one another; forming the plurality of wires into a shape twisted along a predetermined direction; and The step of extending the twisted shape by adding new threads.

2. The method for producing an aerosol-generating article according to claim 1, wherein: The plurality of wires have diameters different from each other.

3. The method for producing an aerosol-generating article according to claim 1, wherein: The step of providing a heat-sensitive body further comprises: The step of impregnating an aerosol-generating substance into a heat-sensitive body formed into a shape in which a plurality of the filaments are twisted together.

4. The method for producing an aerosol-generating article according to claim 1, wherein: The steps of cutting the cylindrical body include: A step of removing a portion formed into a shape in which a predetermined number or more of wires are twisted together.

5. The method for producing an aerosol-generating article according to claim 1, wherein: The step of providing a filter rod comprises: the step of providing a cooling section for cooling the aerosol; and A step of providing a filtering section, wherein the filtering section is arranged on one side of the cooling section and is used to filter the specified components contained in the aerosol.

6. The method for producing an aerosol-generating article according to claim 5, wherein: The step of providing a cooling section comprises: providing a first cooling member having a first diameter through which the aerosol passes; and The step of providing a second cooling member through which the aerosol passes and having a second diameter different from the first diameter.

7. The method for producing an aerosol-generating article according to claim 1, wherein: Before the step of providing the tobacco rod, the method further includes the step of providing a front end plug-in. The front end plug-in is arranged on the other side of the tobacco rod.

8. The method for producing an aerosol-generating article according to claim 1, wherein: The step of packing with wrapping paper comprises: The step of forming perforations in a region of the wrapper surrounding at least any one of the tobacco rod and the filter rod.

9. An aerosol-generating article, wherein: The aerosol-generating article is manufactured by the method for manufacturing an aerosol-generating article according to claim 1, The aerosol-generating article comprises: The tobacco rod includes a heat-sensitive body formed into a shape obtained by twisting a plurality of filaments; a filter rod, disposed on one side of the tobacco rod; and The wrapping paper is used for wrapping the tobacco rod and the filter rod.

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