Filter tip, aerosol-generating article comprising the filter tip, and method for manufacturing the filter tip

Abstract

Several embodiments of the present invention provide a filter tip, which is included in an aerosol generating article, comprising: a first filter section including a first filter element carrying at least one or more different types of particles; a second filter section including a second filter element; and packaging paper for packaging the first filter section and the second filter section, wherein the first filter section and the second filter section are aligned along the length direction of the filter tip and the first filter section and the second filter section are not physically separated.

Description

Technical Field

[0001] Several embodiments relate to a filter tip, an aerosol-generating article comprising the filter tip, and a method of manufacturing the filter tip. Background Technology

[0002] As filters are used in cigarettes and smoking products, there is an increasing demand for composite filters that include different substances in addition to the filter material. Existing composite filters are manufactured by separately producing filters containing only the filter material and filters containing different substances, and then joining the two types of filters together. Compared to filters that do not contain different substances, these composite filters are manufactured through a complex process, which can lead to deviations in the physical properties of the resulting composite filters, or increased manufacturing time and costs. Summary of the Invention

[0003] The problem the invention aims to solve

[0004] The problem to be solved by the various embodiments is to provide a filter tip that reduces the deviation in physical properties of a filter tip containing different substances and an aerosol generating article containing the same.

[0005] In addition, a method for manufacturing a filter tip is provided, which can reduce the deviation in physical properties of filter tips containing different substances manufactured by simplifying the process, and can reduce the time and cost required for manufacturing.

[0006] The problems to be solved by the various embodiments are not limited to those described above. Those skilled in the art should clearly understand, through this specification and the accompanying drawings, any problems not mentioned.

[0007] means for solving problems

[0008] As a technical means to solve the above-mentioned technical problems, one embodiment provides a filter tip, which is a filter tip included in an aerosol generating article, comprising: a first filter section including a first filter element carrying at least one or more different kinds of material particles; a second filter section including a second filter element; and packaging paper for packaging the first filter section and the second filter section; the first filter section and the second filter section are aligned along the length direction of the filter tip, and the first filter section and the second filter section are not physically separated.

[0009] Other embodiments provide an aerosol-generating article including a filter tip according to one embodiment.

[0010] Another embodiment provides a method for manufacturing a filter tip, comprising: a first step of conveying a filter tip bundle in one direction; a second step of manufacturing a filter tip bundle with added particles of at least one different substance at predetermined length intervals by adding at predetermined weights of at least one different substance particles to the conveyed filter tip bundle at predetermined intervals; a third step of wrapping the filter tip bundle with added particles of at predetermined length intervals in packaging paper; and a fourth step of cutting the packaged filter tip bundle into filter tips each containing particles of different substances.

[0011] The means of solving the problem are not limited to those described above, and may include all matters that a person skilled in the art could deduce throughout this specification.

[0012] Invention Effects

[0013] Compared to existing methods for manufacturing filter tips containing particles of different substances, the method for manufacturing filter tips according to the embodiment simplifies the process and thereby reduces the manufacturing time. Since the segments of the manufactured filter tip are not physically separated, deviations that may occur in the physical properties of the filter tip, such as suction resistance, length, and circumference, can be reduced.

[0014] Furthermore, unlike existing composite filter tips that contain particles of different substances, this one can be packaged using only a single sheet of paper, thus reducing manufacturing costs and saving energy consumed in forming perforations.

[0015] The effects of the various embodiments are not limited to those described above, and may include all effects that can be inferred from the structures described below. Attached Figure Description

[0016] Figure 1 This is a diagram illustrating an example of an existing composite filter tip containing particles of different substances.

[0017] Figure 2 This is a diagram illustrating an example of the manufacturing process for existing composite filter tips.

[0018] Figure 3 This is a diagram illustrating one embodiment of a filter tip.

[0019] Figure 4 This is a diagram illustrating an example of the manufacturing process of a filter tip according to an embodiment.

[0020] Figure 5 This is a sequence diagram of a method for manufacturing a filter tip according to one embodiment.

[0021] Figure 6a The manufacturing process of a filter tip according to one embodiment is shown.

[0022] Figure 6b The manufacturing process of a filter tip according to another embodiment is shown in the figure.

[0023] Specific preferred implementation method

[0024] One embodiment provides a filter tip included in an aerosol-generating article, comprising: a first filter segment including a first filter element carrying at least one or more different types of particles; a second filter segment including a second filter element; and packaging paper for packaging the first filter segment and the second filter segment; the first filter segment and the second filter segment are aligned along the length direction of the filter tip and are not physically separated.

[0025] The different types of material particles can be selected from one or more of the group consisting of activated carbon particles and tobacco particles.

[0026] The different types of material particles are activated carbon particles, and the first filtration section may contain activated carbon particles of 0.5 mg / mm to 5 mg / mm based on the length direction of the filter nozzle.

[0027] The diameter of the different types of material particles can be from 0.1 mm to 0.7 mm.

[0028] The length ratio of the first filter section and the second filter section, based on the length direction of the filter nozzle, can be from 1:0.5 to 1.5.

[0029] The packaging paper may include at least one or more perforations.

[0030] Other embodiments provide an aerosol-generating article including a filter tip according to one embodiment.

[0031] Another embodiment provides a method for manufacturing a filter tip, comprising: a first step of conveying a filter tip tow in one direction; a second step of manufacturing a filter tip tow having a predetermined length interval by adding at least one or more different kinds of material particles to the conveyed filter tip tow at a predetermined period of time; a third step of wrapping the filter tip tow having the different kinds of material particles at the predetermined length interval with packaging paper; and a fourth step of cutting the packaged filter tip tow into filter tips each containing different kinds of material particles.

[0032] The different types of material particles can be selected from one or more of the group consisting of activated carbon particles and tobacco particles.

[0033] The different types of material particles are activated carbon particles, and the specified weight can be from 0.5 mg / mm to 5 mg / mm, based on the length direction of the filter tip filament bundle.

[0034] The diameter of the different types of material particles can be from 0.1 mm to 0.7 mm.

[0035] The specified length interval can be from 5mm to 30mm.

[0036] The second step may include: adding at least one or more of the different types of material particles of the specified weight to the conveyed filter tip bundle at the specified period, and manufacturing a filter tip bundle with the added different types of material particles having the specified length interval; and passing the filter tip bundle with the added different types of material particles having the specified length interval through a compressor and compressing it.

[0037] The second step may include: passing the filter tip bundle through a compressor and producing a compressed filter tip bundle; adding at least one or more of the different types of material particles of the specified weight to the compressed filter tip bundle being transported at the specified period, and producing filter tip bundles with the added different types of material particles having the specified length intervals; and dispersing the different types of material particles into the filter tip bundle by injecting gas into the filter tip bundles with the added different types of material particles having the specified length intervals.

[0038] The method for manufacturing a filter tip according to an embodiment may further include a fifth step of forming at least one perforation in the packaging paper. Detailed Implementation

[0039] The terminology used in the embodiments has been selected as widely used and common terms as possible, taking into account the functionality of the invention. However, these terms may be changed based on the intent of those skilled in the art, precedents, or the emergence of new technologies. Furthermore, in certain cases, the applicant has arbitrarily selected some terms; in such cases, the meanings of the selected terms will be described in detail in the description of the invention. Therefore, the terminology used in this invention should be defined based on the meaning of the terms and the overall content of the invention, and not merely on the name of the terms.

[0040] Throughout this specification, the phrase "includes" a component means that, unless otherwise described, that component may also include other components, not that it excludes other components. Furthermore, terms such as "...section" and "...module" used in this specification refer to a unit that performs at least one function or operation, which can be implemented in hardware or software, or a combination of hardware and software.

[0041] Furthermore, terms including ordinal numbers such as "first" or "second" used in this specification may be used to describe various components, but the components should not be limited by the terms. The purpose of using these terms is solely to distinguish one component from another.

[0042] Throughout the instruction manual, "aerosol-generating article" refers to an article intended for smoking. For example, an aerosol-generating article can be a conventional cigarette used by ignition and combustion, or a heated cigarette used by being heated by an aerosol-generating device.

[0043] Throughout the instruction manual, "the length direction of the filter tip" refers to the direction in which the filter tip extends.

[0044] Throughout the instruction manual, "tobacco substance" refers to all forms of substances containing components derived from tobacco leaves.

[0045] Throughout this specification, "filter element" refers to a component that contains filter material. For example, a filter element may include multiple filaments.

[0046] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings to enable those skilled in the art to readily implement the invention. However, the present invention is not limited to the embodiments described herein, but can be implemented in various different ways.

[0047] Hereinafter, several embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0048] Figure 1 This diagram illustrates an example of an existing composite filter tip containing particles of different substances. Figure 2 This is a diagram illustrating an example of the manufacturing process for existing composite filter tips.

[0049] Reference Figure 1 The existing composite filter 100 containing different types of material particles 2 includes: a first filter section 110, including a filter element carrying different types of material particles 2; and a second filter section 120, which only includes the filter element. The filter element of the first filter section 110 includes multiple fiber filaments, and the different types of material particles 2 can be randomly dispersed among the multiple fiber filaments.

[0050] The existing composite filter tip 100 containing particles 2 of different substances includes: a first inner packaging paper 131 for packaging a first filter section 110; and a second inner packaging paper 132 for packaging a second filter section 120. Furthermore, the existing composite filter tip 100 containing particles 2 of different substances includes: an outer packaging paper 133 for packaging the first filter section 110 already packaged by the first inner packaging paper 131 and the second filter section 120 already packaged by the second inner packaging paper 132.

[0051] The outer packaging paper 133 may have at least one perforation 140 to allow outside air to flow into the filter or inside air to flow out. The same perforation may be formed on the first inner packaging paper 131 or the second inner packaging paper 132 at the position corresponding to at least one perforation 140 of the outer packaging paper 133.

[0052] Reference Figure 1 and Figure 2 The existing composite filter tip 100 containing particles 2 of different substances is manufactured as follows: a filter tip including filter elements carrying particles 2 of different substances and a filter tip consisting only of filter elements are manufactured separately and then joined together. In other words, it requires two processes for manufacturing each filter tip and one process for joining the two filter tips, thus requiring a total of three processes. Filter tips manufactured through multiple processes may exhibit deviations in physical properties such as suction resistance, length, and circumference. Furthermore, it may increase the manufacturing time required.

[0053] Furthermore, when manufacturing two types of filter tips, a separate wrapping paper is required for each type, and an additional wrapping paper is required during the joining of the two types of filter tips. This unnecessarily increases the amount of wrapping paper needed to manufacture the filter tips, thus contributing to increased manufacturing costs.

[0054] The perforations 140 formed in the packaging paper can be formed by mechanical methods such as laser etching. Since the existing composite filter 100 containing different kinds of material particles 2 is wrapped with multiple layers of packaging paper, it may require a lot of unnecessary energy to form the perforations 140.

[0055] Figure 3 This is a diagram illustrating one embodiment of a filter tip. Figure 4 This is a diagram illustrating an example of the manufacturing process of a filter tip according to an embodiment.

[0056] Reference Figure 3According to one embodiment, the filter nozzle 200 may include: a first filter section 210, including a first filter element, the first filter element carrying at least one or more different types of material particles 2; and a second filter section 220, including a second filter element. The first filter section 210 and the second filter section 220 may be aligned along the length direction of the filter nozzle 200.

[0057] According to one embodiment, a filter tip 200 may be included in an aerosol generating article (not shown). The filter tip 200 may be included at one end of the aerosol generating article, and the generated aerosol may pass sequentially through a first filter section 210 and a second filter section 220 to form an airflow, thereby allowing a smoker to inhale the aerosol from the second filter section 220.

[0058] The first filtration section 210 may include a first filtration element carrying at least one or more different types of material particles 2. The at least one or more different types of material particles 2 may be randomly dispersed inside and outside the first filtration section 210.

[0059] The different types of material particles 2 can be one or more selected from the group consisting of activated carbon particles and tobacco particles, preferably activated carbon. The carbon particles included in the filter tip 200 can adsorb gaseous substances based on their strong adsorption properties, and therefore, when used together with cellulose acetate fibers, which are mainly used for filtering particulate matter, they complement each other.

[0060] Tobacco particles can be particles containing tobacco substances. Tobacco substances can be, for example, tobacco leaves, tobacco veins, expanded tobacco, shredded tobacco, reconstituted tobacco, tobacco extracts, and combinations thereof. When a filter 200, including a first filter section 210 containing tobacco particles, is applied to an aerosol-generating article, nicotine can be produced from the tobacco particles by the high-temperature aerosol passing through the filter 200, thereby enhancing the smoking experience.

[0061] In one embodiment, the different substance particles 2 are activated carbon particles, and the first filter section 210 may contain activated carbon particles of 0.5 mg / mm to 5 mg / mm along the length of the filter tip. Because the first filter section 210 contains activated carbon particles of the weight within the numerical range described above, the filter tip 200 can improve the adsorption effect of gaseous substances based on activated carbon particles while having appropriate inhalation resistance. Preferably, the first filter section 210 may contain activated carbon particles of about 1 mg / mm to 4 mg / mm along the length of the filter tip; more preferably, it may contain about 1.5 mg / mm to 5 mg / mm.

[0062] The diameter of the different material particles 2 can be from about 0.1 mm to about 0.7 mm. Because the different material particles 2 have a diameter within the range described above, they can be uniformly distributed throughout the first filter element, while reducing the circumferential (perimeter) deviation measured relative to the length direction perpendicular to the first filter section 210. When the diameter of the different material particles 2 is less than about 0.1 mm, agglomeration of the different material particles 2 occurs, thus preventing uniform distribution throughout the first filter element. Furthermore, when the diameter of the different material particles 2 is greater than about 0.7 mm, the circumferential (perimeter) deviation measured relative to the length direction perpendicular to the first filter section 210 increases. Moreover, since a larger particle diameter increases the weight of the different material, it may fall off the filter nozzle, potentially increasing the weight of the filter nozzle and the deviation in suction resistance. Preferably, the different material particles 2 can have a diameter of about 0.1 mm to about 0.7 mm; more preferably, they can have a diameter of about 0.15 mm to about 0.6 mm.

[0063] The first filter section 210 and the second filter section 220 may not be physically separated. "Not physically separated" means that the filter elements included in the first filter section 210 and the second filter section 220 are not joined in a separated state. In other words, the first filter element and the second filter element may differ only in whether or not they contain different types of particles 2, and may contain the same filter material. For example, the first filter element of the first filter section 210 and the second filter element of the second filter section 220 may contain the same plurality of filaments, which can extend from one end of the filter tip 200 to the other. The first filter element and the second filter element may contain cellulose acetate fibers, but are not limited thereto, and may contain various types of filter materials known in the art.

[0064] The filter tip 200 may include packaging paper 230 for wrapping the first filter section 210 and the second filter section 220. The packaging paper 230 may include at least one perforation 240. The location of the perforations 240 may be appropriately adjusted according to the aerosol generation characteristics of the article to which the filter tip 200 is applied. For example, to achieve a higher aerosol dilution rate, the perforations 240 may be formed at a location corresponding to the first filter section 210, but are not limited thereto.

[0065] With the length direction of the filter nozzle 200 as a reference, the length ratio of the first filter section 210 and the second filter section 220 can be 1:0.5 to 1.5.

[0066] Since the first filter section 210 and the second filter section 220 have a length ratio within the range described above, the filter nozzle 200 can have appropriate suction resistance. Based on the length direction of the filter nozzle 200, the first filter section 210 and the second filter section 220 preferably have a length ratio of 1:0.6 to 1.4, and more preferably have a length ratio of 1:0.7 to 1.3.

[0067] Based on the length direction of the filter nozzle 200, the lengths of the first filter section 210 and the second filter section 220 are approximately 5 to approximately 30 mm, respectively. Alternatively, the lengths of the first filter section 210 and the second filter section 220 are approximately 6 mm to approximately 18 mm, respectively. For example, the length of the first filter section 210 may be approximately 15 mm, and the length of the second filter section 220 may be approximately 12 mm. As another example, the first filter section 210 may have a length of approximately 12 mm, and the second filter section 220 may have a length of approximately 15 mm.

[0068] Reference Figure 3 and Figure 4 According to one embodiment, the filter tip 200 can be manufactured by cutting the filter tip filaments containing at least one different type of substance particles 2 at predetermined length intervals into filter tips 200 containing different type of substance particles 2 after manufacturing a filter tip filament bundle with at least one different type of substance particles 2 at predetermined length intervals. Therefore, since only the processes for manufacturing the filter tip filament bundle with at least one different type of substance particles 2 at predetermined length intervals and the processes for cutting the filter tip filament bundle are performed, the manufacturing process is simplified compared to the conventional composite filter tip 100 containing different type of substance particles 2 as described above, thereby shortening the manufacturing time. Furthermore, since the first filter section 210 and the second filter section 220 of the filter tip 200 according to one embodiment are not physically separated, deviations that may occur in the physical characteristics of the filter tip 200, such as suction resistance, length, and circumference, can be reduced.

[0069] Furthermore, unlike existing composite filter tips containing particles 2 of different substances, this one can be packaged with only a single sheet of paper 230, thus reducing manufacturing costs and saving energy required to form the perforations 240.

[0070] Figure 5 This is a sequence diagram of a method for manufacturing a filter tip according to one embodiment.

[0071] Reference Figure 5 The method for manufacturing a filter tip may include a first step S110, a second step S120, a third step S130, and a fourth step S140.

[0072] Reference Figure 6a and Figure 6b A detailed description of a method for manufacturing a filter tip according to an embodiment.

[0073] Figure 6a The image shows a manufacturing process for a filter tip according to one embodiment. Figure 6b The manufacturing process of a filter tip according to another embodiment is shown in the figure.

[0074] The first step S110 is the step of conveying the filter tip bundle 1 in one direction.

[0075] Reference Figure 6a and Figure 6b In the first step S110, the filter tip tow 1 can be fed into the conveyor of the filter tip manufacturing apparatus and conveyed in one direction at a fixed speed. For example, the filter tip tow 1 can be a tow of cellulose acetate material. However, it is not limited to this and can include various tows known in the art.

[0076] As a specific example, the first step can be performed by providing the filter tip tow 1 from the filter tip tow storage tank 10 containing the filter tip tow 1 to a conveyor. The conveyor may include at least one roller 21, 22, 23. The rollers 21, 22, 23, by appropriately adjusting the conveying speed of the received filter tip tow 1, can maintain a fixed arrangement of the individual fibers constituting the filter tip tow 1 during conveying.

[0077] like Figure 6a and Figure 6b As shown, each roller 21, 22, 23 may include a pair of rollers 21, 22, 23 arranged perpendicular to the conveying direction of the filter tip bundle 1. The pair of rollers 21, 22, 23 rotate in opposite directions to each other, thereby conveying the provided filter tip bundle 1 in one direction.

[0078] For example, a pair of rollers 21, 22, and 23 may include: rollers 21, 22, and 23 whose surfaces in contact with the filter tip bundle 1 are formed of rubber material; and rollers 21, 22, and 23 whose surfaces in contact with the filter tip bundle 1 have multiple grooves formed at predetermined intervals. The rollers 21, 22, and 23 with rubber surfaces can transport the filter tip bundle 1 by means of friction with it. The rollers 21, 22, and 23 with multiple grooves formed at predetermined intervals on their surfaces can maintain a certain alignment of the fibers during the transport of the filter tip bundle 1.

[0079] According to one embodiment of the method for manufacturing a filter tip, it may further include the step of adding a plasticizer to the filter tip tow 1 being conveyed. (See also...) Figure 6a and Figure 6bThe filter tip bundle 1, conveyed by conveyor rollers 21, 22, and 23, can pass through the plasticizer feeder 30. The plasticizer feeder 30 can spray plasticizer onto the surface of the conveyed filter tip bundle 1.

[0080] The plasticizer can cause multiple fibers of the filter tip bundle 1 to aggregate. Because the fibers are aggregated, the particles 2 of different substances added in subsequent steps will not detach from the filter tip bundle 1 and will maintain their position. The plasticizer can be one or more substances selected from the group consisting of triacetin, triethyl citrate, and polyethylene glycol, but is not limited thereto, and can include various filter tip materials known in the art.

[0081] The second step S120 is to add at least one or more different kinds of material particles 2 of a predetermined weight to the conveyed filter tip bundle 1 at a predetermined period, and to manufacture a filter tip bundle 1 with a predetermined length interval containing the different kinds of material particles 2.

[0082] The different types of material particles 2 can be one or more selected from the group consisting of activated carbon particles and tobacco particles, preferably carbon particles. The carbon particles included in the filter tip can adsorb gaseous substances based on their strong adsorption properties, and therefore can complement each other when used together with cellulose acetate fibers, which are mainly used for filtering particulate matter.

[0083] Tobacco particles can be particles containing tobacco substances. Tobacco substances can be, for example, tobacco leaves, tobacco side veins, expanded tobacco, cut tobacco, reconstituted tobacco, reconstituted tobacco, tobacco extracts, and combinations thereof. When a filter containing tobacco particles is applied to an aerosol-generating article, nicotine can be produced from the tobacco particles through the high-temperature aerosol passing through the filter, thereby enhancing the smoking experience.

[0084] The second step S120 can be performed by adding a predetermined weight of different types of material particles 2 to the conveyed filter tip bundle 1 at a fixed position and at a predetermined cycle. When different types of material particles 2 are repeatedly added at a fixed position and at a fixed cycle, the conveyed filter tip bundle 1 can repeatedly form portions containing different types of material particles 2 and portions not containing different types of material particles 2 at predetermined intervals. The added different types of material particles 2 can be arbitrarily arranged among the multiple fibers of the filter tip bundle 1.

[0085] As a specific example, refer to Figure 6a and Figure 6bDifferent types of material particles 2 can be stored in a different type of material particle storage tank 40, and added to the filter tip bundle 1 being conveyed by a different type of material particle feeder 41. The different type of material particle feeder 41 can be in the form of gears with multiple slots formed at predetermined intervals to accommodate a predetermined weight of different types of material particles 2. The gear-type different type of material particle feeder 41 can be installed at the lower part of the different type of material particle storage tank 40. After the gear-type different type of material particle feeder 41 has accommodated a predetermined weight of different types of material particles 2 in the slots formed at fixed intervals, it rotates, thereby allowing the different types of material particles 2 to fall freely into the filter tip bundle 1 being conveyed.

[0086] The specified period can refer to the time interval between the starting points of adding different types of material particles 2. The specified period can be adjusted by the spacing of the multiple slots in the gear-shaped material particle feeder 41 and the rotational speed of the material particle feeder 41. For example, as the spacing of the multiple slots in the gear-shaped material particle feeder 41 increases, the specified period can also increase. Furthermore, as the rotational speed of the material particle feeder 41 increases, the specified period can decrease.

[0087] The specified weight can refer to the weight of the different types of material particles 2 added in a single process for adding different types of material particles 2. For example, the specified weight can refer to the weight of the different types of material particles 2 contained in the trough of the gear-type different type of material particle feeder 41.

[0088] In one embodiment, the different substance particles 2 are activated carbon particles, and the specified weight, based on the length direction of the filter tip filament bundle, can be from about 0.5 mg / mm to 5 mg / mm. Here, the length direction of the filter tip filament bundle refers to the direction in which the filter tip filament bundle extends. When the specified weight has the numerical range described above, the manufactured filter tip can have appropriate inhalation resistance while improving the adsorption effect of gaseous substances based on activated carbon particles. Preferably, the specified weight, based on the length direction of the filter tip filament bundle, can be from about 1 mg / mm to 4 mg / mm; more preferably, it can be from about 1.5 mg / mm to 5 mg / mm.

[0089] The different material particles 2 can have a diameter of about 0.1 to about 0.7 mm. When the different material particles 2 have a diameter within the range described above, they can be uniformly distributed in the filter tip bundle 1, while reducing the circumferential (circumference) deviation measured relative to the length direction perpendicular to the manufactured filter tip. When the diameter of the different material particles 2 is less than about 0.1 mm, agglomeration of the different material particles 2 occurs, and therefore they cannot be uniformly distributed within the filter tip bundle 1. Furthermore, when the diameter of the different material particles 2 is greater than about 0.7 mm, the circumferential (circumference) deviation measured relative to the length direction perpendicular to the manufactured filter tip increases. In addition, since the larger the particle diameter, the greater the weight of the different material, it cannot be placed in the filter tip and will fall off, which may increase the deviation in the weight of the filter tip and the suction resistance. Preferably, the different material particles 2 can have a diameter of about 0.1 mm to about 0.7 mm, more preferably, a diameter of about 0.15 mm to about 0.6 mm.

[0090] The specified length interval can refer to the distance between portions that do not contain particles 2 of different substances (i.e., the length of the portions that do not contain particles 2 of different substances). The specified length interval can vary depending on the conveying speed and free fall distance of the filter tip bundle 1. For example, as the conveying speed of the filter tip bundle 1 increases, the length of the portions containing particles 2 of different substances may increase, and the distance between these portions may also increase. Furthermore, as the free fall distance increases, the length of the portions containing particles 2 of different substances may increase, and the distance between these portions may decrease.

[0091] For example, the specified length interval can be from approximately 5 mm to approximately 30 mm. In other words, the length of the portion that does not contain particles 2 of different substances can be from approximately 5 mm to approximately 30 mm. The length of the portion that contains particles 2 of different substances can be from approximately 5 mm to approximately 30 mm.

[0092] The portion containing different types of material particles 2 and the portion not containing different types of material particles 2 can have a length ratio of 1:0.5 to 1.5. When the length ratio is within the range of values ​​described above, the manufactured filter tip can have appropriate suction resistance. Preferably, the length ratio can be 1:0.6 to 1.4, and more preferably, it can be 1:0.7 to 1.3.

[0093] The second step S120 may include: adding at least one or more different kinds of material particles 2 of a predetermined weight to the conveyed filter tip bundle 1 at a predetermined period, and manufacturing a filter tip bundle 1 with a predetermined length interval containing the different kinds of material particles 2; and passing the filter tip bundle 1 with a predetermined length interval containing the different kinds of material particles 2 through the compressor 50 and compressing it.

[0094] Reference Figure 6a The filter tip bundle 1 containing different types of particles 2 can be compressed by the compressor 50. The compressor 50 can compress the fed filter tip bundle 1 containing different types of particles 2 to make the bundle density more uniform, and in the subsequent third step S130 of packaging the filter tip bundle 1 with packaging paper, it can prevent the packaging paper from breaking due to the pressure transmitted from the thickness of the filter tip bundle 1. The compressor 50 can use a compressed jet, but is not limited to this; various compression devices known in the art can be employed.

[0095] In addition, refer to Figure 6b The second step S120 may include: manufacturing a compressed filter tip bundle 1 by passing the filter tip bundle 1 through the compressor 50; adding at least one or more different kinds of material particles 2 of a predetermined weight to the conveyed filter tip bundle 1 at a predetermined period, and manufacturing a filter tip bundle 1 with different kinds of material particles 2 added at predetermined length intervals; and dispersing the different kinds of material particles 2 into the filter tip bundle 1 by injecting gas into the filter tip bundle 1 with different kinds of material particles 2 added at predetermined length intervals.

[0096] When the filter tip bundle 1 is compressed before adding different types of material particles 2, the compressed filter tip bundle 1 will have a high density, so the different types of material particles 2 may not be able to be added into the interior of the bundle. Accordingly, the process may include the step of dispersing the different types of material particles 2 into the filter tip bundle 1 by injecting gas into the filter tip bundle 1 to which the different types of material particles 2 have been added.

[0097] The step of dispersing different kinds of material particles 2 into the filter tip wire bundle 1 by spraying gas can be performed by a gas injector 80 including an air jet, but is not limited thereto, and various gas devices known in the art can be used.

[0098] The third step S130 is to wrap the filter tip bundle 1, which contains particles 2 of different substances, with a specified length interval using wrapping paper.

[0099] Reference Figure 6a and Figure 6bA filter tip bundle 1, containing particles 2 of different substances at predetermined length intervals, can be conveyed to a packaging machine 60. The packaging machine 60 can wrap the filter tip bundle 1 with packaging paper. The packaging machine 60 can wrap the filter tip bundle 1 with packaging paper to give it a cylindrical shape, and can use an adhesive to fix the packaging paper. For example, a portion of the packaging paper coated with a hot-melt adhesive can be used to wrap the filter tip bundle 1, and then heated to fix the packaging paper; however, this is not a limitation, and various adhesives known in the art can be used.

[0100] The fourth step S140 is to cut the filter tip bundle 1 wrapped in packaging paper into filter tips that contain different kinds of material particles 2.

[0101] Reference Figure 6a and Figure 6b The filter tip tow 1, wrapped in packaging paper, can be fed to a cutting machine 70. The cutting machine 70 can cut the filter tip tow 1 into specified lengths, thereby manufacturing filter tips. The cutting machine 70 can cut the filter tips into portions containing different types of material particles 2. For example, for... Figure 2 and Figure 3 As described above, the filter tip bundle 1 can be cut such that the filter tip bundle 1 includes: a first filter section 210 having a first filter element, wherein the first filter element carries at least one or more different kinds of material particles 2; and a second filter section 220 having a second filter element.

[0102] The method for manufacturing a filter tip according to one embodiment may further include a fifth step of forming at least one perforation in the packaging paper. For example, the perforation can be formed using laser etching, but is not limited thereto; various methods known in the art can be employed. As described above, the method for manufacturing a filter tip according to one embodiment allows the filter tip to be manufactured using only one sheet of packaging paper without the need for overlapping multiple sheets, thus saving energy consumed in forming the perforations.

[0103] Those skilled in the art will understand that variations can be implemented without departing from the essential characteristics of the described content. Therefore, the disclosed methods should not be considered limiting, but rather illustrative. The scope of the invention is not embodied in the foregoing description, but rather in the claims, and all distinctions within the equivalent scope should be interpreted as included within the invention.

Claims

1. A filter tip included in an aerosol-generating article, characterized in that, include: The first filtration section includes a first filtration component, in which one or more different types of material particles are uniformly dispersed. The second filtration section includes a second filtration component, and Packaging paper, used to package the first filter section and the second filter section; The first filter section and the second filter section are aligned along the length of the filter nozzle. The first filter segment and the second filter segment will not be physically separated.

2. The filter tip according to claim 1, characterized in that, The different types of material particles are selected from one or more types of material particles in the group consisting of activated carbon particles and tobacco particles.

3. The filter tip according to claim 1, characterized in that, The different types of particles mentioned are activated carbon particles. With the length direction of the filter tip as a reference, the first filter section contains activated carbon particles of 0.5 mg / mm to 5 mg / mm.

4. The filter tip according to claim 1, characterized in that, The different types of material particles have a diameter of 0.1 mm to 0.7 mm.

5. The filter tip according to claim 1, characterized in that, With the length direction of the filter nozzle as a reference, the length ratio of the first filter section to the second filter section is 1:0.5 to 1.

5.

6. The filter tip according to claim 1, characterized in that, The packaging paper includes one or more perforations.

7. An aerosol-generating article, characterized in that, Includes the filter tip as described in claim 1.

8. A method for manufacturing a filter tip, characterized in that, include: The first step is to feed the filter tip wire bundle in one direction; The second step involves manufacturing a filter tip bundle with uniformly added particles of one or more different substances at predetermined length intervals by adding a predetermined weight of such particles to the filter tip bundle being transported at predetermined intervals. The third step is to wrap the filter tip bundle, which has a specified length interval and is uniformly filled with particles of the different substances, with packaging paper. as well as The fourth step is to cut the filter tip bundle wrapped in the packaging paper into filter tips as described in claim 1 with a specified interval.

9. The method for manufacturing a filter tip according to claim 8, characterized in that, The different types of material particles are selected from one or more types of material particles in the group consisting of activated carbon particles and tobacco particles.

10. The method for manufacturing a filter tip according to claim 8, characterized in that, The different types of particles mentioned are activated carbon particles. Based on the length direction of the filter tip filament bundle, the specified weight is 0.5 mg / mm to 5 mg / mm.

11. The method for manufacturing a filter tip according to claim 8, characterized in that, The different types of material particles have a diameter of 0.1 mm to 0.7 mm.

12. The method for manufacturing a filter tip according to claim 8, characterized in that, The specified length interval is 5mm to 30mm.

13. The method for manufacturing a filter tip according to claim 8, characterized in that, The second step also includes: The step of passing a filter tip bundle containing particles of the different substances, with the specified length intervals, through a compressor and compressing it.

14. The method for manufacturing a filter tip according to claim 8, characterized in that, The second step includes: The step of passing the filter tip bundle through a compressor to produce a compressed filter tip bundle; The step of manufacturing a filter tip bundle with the added particles of the different substances having the specified length intervals is achieved by adding the specified weight of one or more of the different substances to the compressed filter tip bundle being conveyed at the specified period; and The step of dispersing the different types of material particles into the filter tip bundle by injecting gas into the filter tip bundle having the specified length intervals.

15. The method for manufacturing a filter tip according to claim 8, characterized in that, Also includes: The fifth step is to form one or more perforations in the packaging paper.

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