KR20210022329A - Smoking article - Google Patents

Abstract

A smoking article is disclosed. The smoking article according to an embodiment of the present invention comprises: a filter unit; a medium unit containing an aerosol generating substrate; and a front plug disposed upstream of the medium unit, wherein the front plug comprises a first opening having one side which is opened, the other side which is closed, and hollow inside. The present invention can secure suction resistance that can increase the smoking satisfaction of smokers.

Description

Smoking articles{SMOKING ARTICLE}

The present invention relates to a smoking article, and more particularly, to a smoking article that can prevent the aerosol-generating substrate filled in a medium from being discharged to the outside of the smoking article and provide optimum suction resistance.

Recently, a new type of smoking article has been disclosed that can overcome the shortcomings of traditional smoking articles. In order to minimize the generation of harmful substances generated by combustion and pyrolysis of tobacco substrates, new types of smoking articles adopt a method of heating tobacco substrates to generate aerosols.

Specifically, a smoking article is inserted into an aerosol-generating device including a heating element, and a heating element in contact with an aerosol-generating substrate provided in the smoking article is heated to form an inhalable aerosol.

However, the direct contact between the electrically operated heating element and the aerosol-generating substrate has caused problems such as contraction of the aerosol-generating substrate due to high heat and the generation of unpleasant flavors due to combustion of the aerosol-generating substrate.

Accordingly, attempts have been made to solve the above-described problems by disposing a front plug at the front end of the medium including the aerosol-generating substrate to prevent the aerosol-generating substrate from directly contacting the heating element.

The front plug disposed at the front end of the medium prevents direct contact between the heating element and the aerosol-generating substrate, and removes foreign substances inside the smoking article insertion hole provided in the aerosol-generating device or inserts smoking articles into the aerosol-generating device. It performs functions such as interworking with a sensor that senses whether or not.

However, the front plug hinders the flow of air flowing into the medium and raises the suction resistance. Alternatively, when a through hole is formed in the front plug in order to secure an airflow passage flowing into the medium, the aerosol-generating substrate included in the medium is discharged to the outside through the through hole.

Accordingly, there is a need for a smoking article having a new type of structure capable of securing an appropriate suction resistance while performing a unique function of the front plug and solving the problem that the aerosol-generating substrate of the medium is discharged to the outside.

The present invention has been conceived to solve the above problems, and an object of the present invention is to provide a smoking article capable of preventing the aerosol-generating substrate contained in the medium from being discharged to the outside.

Another object of the present invention is to provide a smoking article capable of implementing an optimal suction resistance that can increase smoking satisfaction of a smoker.

A smoking article according to an embodiment of the present invention for achieving the above object includes a filter part, a medium part including an aerosol-generating substrate, and a front plug disposed upstream of the medium part, wherein the front plug is one side The first opening is open, the other side is closed, and the inside is empty.

According to an embodiment of the present invention, a length from one side of the front plug to a location where the empty space of the first opening is formed may be longer than a length from a point where the first opening ends to the other side of the front plug. .

According to an embodiment of the present invention, an open portion of the first opening may be formed in an upstream direction of the front plug, and a closed portion of the first opening may be formed in a downstream direction of the front plug.

According to an embodiment of the present invention, the first opening may have a circular cross section and have a conical shape in which a cross-sectional area of a cross-sectional area decreases from an open portion to a downstream direction.

According to an embodiment of the present invention, an open portion of the first opening may be formed in a downstream direction of the front plug, and a closed portion of the first opening may be formed in an upstream direction of the front plug.

According to an embodiment of the present invention, the first opening may be formed in a conical shape having a circular cross-section and a cross-sectional area having a smaller cross-sectional area toward an upstream direction from the open portion.

According to an embodiment of the present invention, the filter unit may include a second opening in which one side is open, the other side is closed, and the inside is empty.

According to an embodiment of the present invention, a length from one side of the filter unit to a location where the empty space of the second opening is formed may be longer than a length from a point where the second opening ends to the other side of the filter unit.

According to an embodiment of the present invention, the front plug may be formed of cellulose acetate.

A smoking article according to another embodiment of the present invention includes a filter part, a medium part including an aerosol-generating substrate, and a front plug disposed upstream of the medium part, wherein one side of the filter part is open and the other side It includes a second opening that is closed and empty inside.

According to an embodiment of the present invention, a length from one side of the filter unit to a location where the empty space of the second opening is formed may be longer than a length from a point where the second opening ends to the other side of the filter unit.

According to the above-described smoking article according to an embodiment of the present invention, it is possible to achieve the effect of securing suction resistance that can increase smoking satisfaction of smokers while preventing the aerosol-generating substrate contained in the medium from being discharged to the outside. I can.

1 is a view for explaining a smoking article according to an embodiment of the present invention.
2 is a perspective view of a front plug according to an embodiment of the present invention.
3 is a perspective view of a front plug according to another embodiment of the present invention.
4 and 5 are perspective views for explaining an opening formed according to another embodiment of the present invention.
6 to 7 are views for explaining cross-sections of openings having various shapes.
8 is a perspective view for explaining an opening formed in a filter unit according to an embodiment of the present invention.
9 is a perspective view of a smoking article in which an opening is formed in a front plug and a filter unit according to an embodiment of the present invention.
10 is a view for explaining a smoking article according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments to be posted below, but may be implemented in various different forms, and only these embodiments make the posting of the present invention complete, and common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to those who have, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same elements throughout the specification.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used with meanings that can be commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not interpreted ideally or excessively unless explicitly defined specifically.

In addition, in the present specification, the singular form may also be included in the plural form unless specifically stated in the phrase. As used herein, "comprises" and/or "comprising" refers to the presence of one or more other components, steps, actions and/or elements in which the recited component, step, operation and/or element is Or does not preclude additions.

Terms including ordinal numbers such as'first' or'second' used in the present specification may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component.

Throughout the specification, “smoking articles” may refer to articles that can generate aerosols, such as cigarettes (cigarettes) and cigars. Smoking articles may comprise an aerosol-generating material or an aerosol-forming substrate. In addition, the smoking article may include a solid material based on tobacco raw materials such as plate-shaped tobacco, cut filler, and reconstituted tobacco. Smoking materials may contain volatile compounds.

In addition, in the entire specification,'upstream' or'upstream direction' means a direction away from the bend of the user who smokes the smoking article 100, and'downstream' or'downstream direction' is the direction of the user who smokes the smoking article 100. It means the direction closer to the bend.

Further, in the present specification, the smoking article 100 may be a combustion type cigarette or a heated cigarette used in an electronic cigarette device.

1 is a view for explaining a smoking article according to an embodiment of the present invention.

Hereinafter, a case where the smoking article 100 according to an embodiment of the present invention is a heated cigarette inserted into an electronic cigarette device and used will be described as an example.

Referring to FIG. 1, a smoking article 100 according to an embodiment of the present invention includes a front plug 110, a medium 130, a support element 150, and a filter 170.

Meanwhile, only the components related to the present embodiment are shown in FIG. 1, and other general-purpose components other than the components shown in FIG. 1 may be further included if a person skilled in the art belongs to the present invention. Can be seen.

Alternatively, some of the components shown in FIG. 1 may be omitted. For example, at least one or more of the front plug 110, the medium part 130, the support element 150, and the filter part 170 may not be included.

In one embodiment, each of the front plug 110, the medium portion 130, the support element 150 and the filter portion 170 may be wrapped by separate wrappers. In addition, the entire smoking article 100 may be double wrapped by another wrapper wrapped around the outer wrapper packaging each of the components. However, the manner in which the smoking article 100 and the part constituting it are packaged by the wrapper is not limited thereto.

The front plug 110 may be a cellulose acetate filter. In addition, the front plug 110 may be composed of a paper filter and a porous molding. The length of the front plug 110 according to an embodiment of the present invention may be 4 to 15 mm, but is not limited thereto.

The front plug 110 may be colored or flavored. Meanwhile, a capsule containing a flavor material may be disposed inside the front plug 110.

The medium 130 may include an aerosol-forming substrate, a binder, and other additives.

The aerosol-forming substrate may be tobacco leaf flakes, tobacco stalks and/or tobacco fines generated during tobacco processing. Alternatively, it may be crushed tobacco leaves, crushed reconstituted tobacco, and the like. For example, the aerosol-forming substrate may include burley species, yellow species, orient species, swollen cutlery, swollen stems and platelets.

The binder is sprayed onto the aerosol-forming substrate to control the overall particle size of the aerosol-forming substrate and to improve the surface properties of the aerosol-forming substrate. The binder according to an embodiment of the present invention may include at least one of hydroxypropyl methylcellulose, gum, flulan, carboxymethyl cellulose, and starch. have.

The additive may be at least one of substances such as a pH adjusting agent, a wetting agent, a flavoring agent, and an organic acid.

The pH adjusting agent may be added when preparing aerosol-forming matrix granules or platelet sheets. Alternatively, the aerosol-forming substrate may be added in a form including granules composed of a pH adjusting agent. The pH adjuster according to an embodiment of the present invention may be at least one such as calcium carbonate, sodium hydrogen carbonate, and calcium oxide. The pH modifier can adjust the pH of the aerosol-forming substrate to the alkali side, thereby promoting the release of flavor components from the aerosol-forming substrate.

The humectant may include at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. In addition, for example, flavoring agents are licorice, sucrose, fructose syrup, isosweet, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose Oil, vanilla, lemon oil, orange oil, mint oil, cinnamon, caraway, cognac, jasmine, chamomile, menthol, cinnamon, ylang-ylang, sage, spearmint, ginger, coriander or coffee.

The particle diameter of the aerosol-forming substrate may range from 0.2 to 1.2 mm. In order to increase the amount of nicotine transfer and taste characteristics of the smoking article 100, the particle size of the aerosol-forming substrate may be adjusted to increase the porosity and decrease the density.

In one embodiment, when the aerosol-forming substrate is used in a non-heating aerosol-generating device, preferably, the particle diameter of the aerosol-forming substrate may range from 0.2 to 0.6 mm. In another embodiment, when the aerosol-forming substrate is used in a heated aerosol-generating device, preferably, the particle diameter of the aerosol-forming substrate may range from 0.7 to 1.18 mm. On the other hand, the aerosol-forming substrate may be heated at 120 °C to 220 °C, preferably at 170 °C.

In addition, the aerosol-forming substrate can be flavored. According to one embodiment, when preparing a granule or a leaflet sheet of an aerosol-forming substrate, a flavor material may be added to a tobacco raw material, and according to another embodiment, a fragrance material may be added to the granule or leaflet sheet of the aerosol-forming substrate. I can. The fragrance material may be a liquid or solid material. In addition, the fragrance material may be a natural product such as herb granules, and may be a material such as silica, zeolite, or dextrin including a fragrance component.

The support element 150 may be a cellulose filter or a recess filter having a hollow therein. However, the material of the support element 150 is not limited thereto, and of course, a filter material such as polylactide (PLA) may be used.

The support element 150 according to an embodiment of the present invention may include at least one flavor capsule or may be configured as a filter in which flavor materials are mixed.

The filter unit 170 is a region through which the aerosol material generated in the medium unit 130 is passed just before the smoker inhales.

The filter unit 170 according to an embodiment of the present invention may be formed of various materials, for example, cellulose acetate, a hollow recess filter, or the like. In addition, the length of the filter unit 170 may be appropriately employed within a range of 4mm to 30mm, and a diameter of 5mm to 8mm, but is not limited thereto.

Hereinafter, a detailed structure of the front plug 110 and the filter unit 170 of the smoking article 100 according to an exemplary embodiment of the present invention will be described.

2 is a perspective view of a front plug according to an embodiment of the present invention.

The front plug 110 according to an embodiment of the present invention includes a first opening 111 that is open on one side, closed on the other side, and empty inside.

Specifically, as shown in Figure 2, the open portion of the first opening 111 according to an embodiment of the present invention is formed in the upstream direction of the front plug 110, and the closed portion is the front plug 110 It may be formed in the downstream direction of. That is, the first opening 111 may be formed so that an empty space is formed by a predetermined depth from the upstream end of the front plug 110 to the downstream direction.

At this time, the total length of the front plug 110 is D, the length from one side of the front plug 110 to the empty space of the first opening 111 is d1, and the front at the end of the first opening 111 When the length to the other side of the plug 110 is indicated as d2, the length of the empty space formed inside the front plug 110 may be indicated as d1, and the length of the closed portion may be indicated as d2.

When external air is introduced into the front plug 110 and flows in the downstream direction, when passing through the empty space inside the first opening 111, it flows without any resistance, and when it reaches the blocked portion of the front plug 110 Air flow is obstructed. Accordingly, as the length of the first opening 111 increases, the suction resistance decreases, and conversely, as the length of the first opening 111 decreases, the suction resistance increases.

When the smoker puffs the smoking article 100 with the same force, the amount of aerosol delivered to the smoker is inversely proportional to the magnitude of the suction resistance. Accordingly, the first opening 111 may be formed to satisfy the following equation in order to increase the smoking satisfaction of the smoker by dedicating an appropriate amount of aerosol to the smoker.

That is, the length of the first opening 111 may be formed longer than the length of the portion occluded in the front plug 110.

According to the structure of the front plug 110 described above, it is possible to secure a suction resistance capable of imparting a feeling of satisfaction to smoking to a smoker. In addition, it is possible to achieve the effect that the aerosol-generating substrate can be prevented from being discharged to the outside of the smoking article 100 from the medium 130 located upstream of the front plug 110 by a closed portion having a predetermined length. have.

3 is a perspective view of a front plug according to another embodiment of the present invention.

According to an embodiment of the present invention, the first opening 111 formed in the front plug 110 may be formed in a direction opposite to that shown in FIG. 2.

Specifically, an open portion of the first opening 111 may be formed in a downstream direction of the front plug 110 and a closed portion may be formed in an upstream direction of the front plug 110. In this case, since the open portion of the first opening 111 comes into contact with the medium 130, the first opening 111 is not visible from the outside of the smoking article 100.

Even when the first opening 111 is formed in the shape as shown in FIG. 3, the length of the portion where the empty space is formed is longer than the length of the closed portion.

The external air introduced into the interior through the upstream end of the front plug 110 passes through a closed portion formed with a relatively short length and flows into the first opening 111, which is an empty space, and then flows in a downstream direction. At this time, since the length of the blocked portion of the front plug 110 that obstructs the flow of air is relatively shorter than the length of the first opening 111 that is an empty space, it is possible to secure an appropriate suction resistance as described in FIG. 2. do.

In addition, even when the first opening 111 is formed in the opposite manner as described in FIG. 2, since there is a closed portion formed with a predetermined length, it is possible to prevent the aerosol-generating substrate included in the medium 130 from being discharged to the outside. The effect can be achieved.

On the other hand, in FIGS. 2 and 3, the first opening 111 has a circular cross-section and a conical shape in which the cross-sectional area increases or decreases toward the upstream direction of the smoking article 100 has been described as an example. It goes without saying that the shape of 111) is not limited thereto, and may be formed to have other shapes.

4 and 5 are perspective views for explaining an opening formed according to another embodiment of the present invention.

Referring to FIG. 4, in the first opening 111 according to an embodiment of the present invention, as described in FIG. 2, the open portion of the first opening 111 is formed in the upstream direction, and the closed portion is formed in the downstream direction. Can be formed. That is, the first opening 111 is formed so that an empty space is formed by a predetermined depth from the upstream end of the front plug 110 to the downstream direction. Likewise, the length in which the empty space is formed may be formed longer than the length of the occluded portion.

Meanwhile, the first opening 111 according to an embodiment of the present invention may have a cylindrical shape having a circular cross-section and a constant cross-sectional area.

In addition, the first opening 111 having the above-described shape may be formed at a position as described in FIG. 3.

Specifically, as shown in FIG. 5, an open portion of the first opening 111 may be formed in a downstream direction, and a closed portion may be formed in an upstream direction. In this case, since the open portion of the first opening 111 comes into contact with the medium 130, the first opening 111 is not visible from the outside of the smoking article 100.

Meanwhile, in FIGS. 2 to 5, a case in which the cross-sectional shape of the first opening 111 is circular is described as an example, but the shape of the first opening 111 is not limited thereto, and may be formed to have a cross-sectional shape of another shape. have.

6 to 7 are views for explaining cross-sections of openings having various shapes.

An empty space is formed inside the first opening 111 according to an embodiment of the present invention, and serves as a passage through which external air flows in the downstream direction.

Accordingly, the flow of air is changed according to the length of the empty space of the first opening 111 formed inside the front plug 110 or the cross-sectional shape of the first opening 111, so that the suction resistance is also changed.

Accordingly, the first opening 111 according to an embodiment of the present invention may have a cross-sectional shape of various shapes according to the suction resistance set by the manufacturer of the smoking article 100.

For example, as shown in FIG. 6, the cross-sectional shape of the first opening 111 has a radial cross-sectional shape extending toward the outer surface based on the center of the cross-section of the front plug 110 or shown in FIG. 7. It may be formed to have a cross-sectional shape of a polygonal shape as described above.

However, the shape of the cross-section of the first opening 111 is not limited to the shape as shown in FIG. 6 or 7, and is one of a shape surrounded by a circular, elliptical, regular polygon, irregular polygon, and a closed curve of an arbitrary shape. Of course, it can be formed to have.

Meanwhile, the first opening 111 according to an embodiment of the present invention may be formed in other components other than the front plug 110.

8 is a perspective view for explaining an opening formed in a filter unit according to an embodiment of the present invention.

The aerosol generated in the medium 130 is supplied to the smoker after passing through the filter unit 170.

The filter unit 170 according to an embodiment of the present invention may be made of cellulose acetate for controlling the concentration of the aerosol generated in the medium unit 130 and filtering harmful components contained in the aerosol.

However, since the suction resistance is increased by the filter unit 170, the filter unit 170 according to an embodiment of the present invention in order to secure a suction resistance of an appropriate size in consideration of the smoking satisfaction of the smoker while efficiently filtering harmful substances. ) May have a second opening 171 formed therein.

Specifically, the second opening 171 according to an embodiment of the present invention may have a structure in which one side is open, the other side is closed, and the inside is empty. At this time, the length from one side of the filter unit 170 to the location where the empty space of the second opening 171 is formed is from the end of the second opening 171 to the other side of the filter unit 170 Can be longer than

In the second opening 171 according to an embodiment of the present invention, an open portion may be formed in an upstream direction of the filter unit 170, and a closed portion may be formed in a downstream direction of the filter unit 170.

However, the state in which the second opening 171 is formed is not limited thereto, and the open portion of the second opening 171 is formed in the downstream direction of the filter unit 170, and the closed portion is formed in the upstream direction of the filter unit 170. It could be.

In this case, the inside of the second opening 171 may be an empty space like the first opening 111. Accordingly, the aerosol introduced into the second opening 171 may pass through the empty space inside the second opening 171 and then pass through the blocked portion to be delivered to the smoker. Alternatively, after passing through the blocked portion of the filter unit 170 first, it may be delivered to the smoker through the empty crotch inside the second opening 171.

The second opening 171 formed in the filter unit 170, like the first opening 111, is formed such that the length of the empty space inside the second opening 171 is longer than the blocked length of the filter unit 170 Can be.

Meanwhile, in FIG. 8, the second opening 171 has a circular cross section and a conical shape in which the cross-sectional area of the second opening 171 decreases toward the downstream direction. However, the shape of the second opening 171 is It is not limited and may be implemented to have a shape as described in FIGS. 4 to 7.

9 is a perspective view of a smoking article in which an opening is formed in a front plug and a filter unit according to an embodiment of the present invention.

According to an embodiment of the present invention, openings may be formed in both the front plug 110 and the filter unit 170 of the smoking article 100. Specifically, the front plug 110 may include a first opening 111 and the filter unit 170 may include a second opening 171.

The internal structure and cross-sectional shape of the first opening 111 and the second opening 171 are the same as those described with reference to FIGS. 2 to 8, so redundant descriptions will be omitted.

In one embodiment, an open portion of the first opening 111 may be formed in an upstream direction of the first opening 111, and a closed portion may be formed in a downstream direction of the first opening 111. In this case, like the first opening 111, the second opening 171 may be formed in the upstream direction of the filter unit 170, and the closed portion may be formed in the downstream direction of the filter unit 170.

In another embodiment, an open portion of the first opening 111 may be formed in an upstream direction of the first opening 111 and a closed portion may be formed in a downstream direction of the first opening 111. In the second opening 171, an open portion may be formed in a downstream direction of the filter unit 170, opposite to a direction in which the first opening 111 is formed, and a closed portion may be formed in an upstream direction of the filter unit 170.

In another embodiment, a closed portion of the first opening 111 may be formed in an upstream direction of the first opening 111 and an open portion may be formed in a downstream direction of the first opening 111. In contrast to the first opening 111, the second opening 171 may be formed in an upstream direction of the filter unit 170, and a closed portion may be formed in a downstream direction of the filter unit 170.

In another embodiment, a closed portion of the first opening 111 may be formed in an upstream direction of the first opening 111 and an open portion may be formed in a downstream direction of the first opening 111. Like the first opening 111, the second opening 171 may be formed in the upstream direction of the filter unit 170, and the open portion may be formed in the downstream direction of the filter unit 170.

Suction by at least one element of the internal structure of the first opening 111 and the second opening 171, the cross section, the length ratio of the length of the empty space and the length of the closed part, and the direction in which the open part and the closed part are formed Since resistance is different, smoking satisfaction of smokers can be increased by combining the above-described factors.

10 is a view for explaining a smoking article according to another embodiment of the present invention.

In FIG. 10, the smoking article 100 is described as an example of a combustion type cigarette.

A smoking article 100 according to another embodiment of the present invention includes a medium part 210 and a filter part 230. In FIG. 10, only constituent elements related to the embodiment of the present invention are shown, and those of ordinary skill in the art may further include other general-purpose constituents other than the constituent elements shown in FIG. .

The medium part 210 includes an aerosol-generating substrate. The aerosol-generating substrate may include at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol.

As an alternative embodiment, the medium portion 210 may contain other additive substances such as flavoring agents, wetting agents, and/or acetate compounds. For example, flavoring agents include licorice, sucrose, fructose syrup, isosweet, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose oil, Vanilla, lemon oil, orange oil, mint oil, cinnamon, caraway, cognac, jasmine, chamomile, menthol, cinnamon, ylang-ylang, sage, spearmint, ginger, coriander or coffee. In addition, the wetting agent may include glycerin or propylene glycol.

As an optional embodiment, the medium part 210 pulverizes tobacco raw materials, mixes solvents and various additives, prepares them in a slurry form, and then dries them to form a sheet, and processes such a sheet to form a reconstituted tobacco having a piece such as a rod. It may contain substances.

For example, the medium part 210 includes a plurality of strands of tobacco material, and one such strand has a length of 10 to 14 mm (for example, 12 mm), and a width of 0.8 to 1.2 mm (for example, 1 mm). ) And a thickness of 0.08 to 0.12 mm (eg 0.1 mm).

Since the medium part 210 includes a plurality of strands processed in the form of the wide tobacco sheet, it is possible to increase the density of the aerosol-generating substrate filled in the smoking material part 201 and improve the manufacturing characteristics of the medium part 210 can do.

At this time, the medium portion 210 may have a long elongated rod shape, and the length thereof is various. As an optional embodiment, the medium portion 210 may be about 7 to 15 mm, and for example, it may be 12 mm. In addition, the diameter of the smoking material portion 110 may be 5 to 9 mm, for example, may be about 7.9 mm.

The filter part 230 is disposed in the downstream direction of the medium part 210 and is a region through which the aerosol material generated in the medium part 210 passes right before the smoker inhales.

The filter unit 230 according to an embodiment of the present invention may be formed of various materials, for example, cellulose acetate or a recess filter containing a hollow.

Meanwhile, the filter unit 230 according to an embodiment of the present invention includes a third opening 231 in which one side is open, the other side is closed, and the inside is empty. Since the structure of the third opening 231 may be formed the same as the structure of the second opening 171 described above, a redundant description will be omitted.

The third opening 231 formed in the filter unit 230 serves to increase smoking satisfaction by providing an optimal suction resistance to the smoker while the filter unit 230 filters harmful substances.

Those of ordinary skill in the technical field related to the present embodiment will appreciate that it may be implemented in a modified form without departing from the essential characteristics of the above-described description. Therefore, the disclosed methods should be considered from an explanatory point of view rather than a limiting point of view. The scope of the present invention is shown in the claims rather than the above description, and all differences within the scope equivalent thereto should be construed as being included in the present invention.

100: smoking articles
110: front plug
111: first opening
130: medium
150: support element
170: filter unit
171: second opening
200: smoking articles
210: medium
230: filter unit
231: third opening

Claims (11)

Filter unit;
A medium portion including an aerosol-generating substrate; And
Including a front plug disposed upstream of the medium,
The front plug,
Smoking articles including a first opening that is open on one side and closed on the other side and is empty inside. The method of claim 1,
A smoking article, characterized in that a length from one side of the front plug to a location where the empty space of the first opening is formed is longer than a length from a point where the first opening ends to the other side of the front plug. The method of claim 1,
An open portion of the first opening is formed in an upstream direction of the front plug, and a closed portion of the first opening is formed in a downstream direction of the front plug. The method of claim 3,
The first opening,
A smoking article, characterized in that the cross-section is circular and is formed in a conical shape in which the cross-sectional area of the cross-sectional area decreases from an open portion in a downstream direction. The method of claim 1,
An open portion of the first opening is formed in a downstream direction of the front plug, and a closed portion of the first opening is formed in an upstream direction of the front plug. The method of claim 5,
The first opening,
Smoking article, characterized in that the cross-section is formed in a conical shape in which the cross-sectional area is circular and the cross-sectional area of the cross-sectional area decreases from the open portion to the upstream direction. The method of claim 1,
The filter unit,
Smoking article, characterized in that it comprises a second opening in which one side is open, the other side is closed and the inside is empty. The method of claim 7,
A smoking article, characterized in that a length from one side of the filter unit to a location where the empty space of the second opening is formed is longer than a length from a point where the second opening ends to the other side of the filter unit. The method of claim 1,
Smoking article, characterized in that the front plug is formed of cellulose acetate. Filter unit;
A medium portion including an aerosol-generating substrate; And
Including a front plug disposed upstream of the medium,
The filter unit,
Smoking articles including a second opening that is open on one side and closed on the other side and is empty inside. The method of claim 10,
A smoking article, characterized in that a length from one side of the filter unit to a location where the empty space of the second opening is formed is longer than a length from a point where the second opening ends to the other side of the filter unit.

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