KR20230149686A - Smoking article - Google Patents

Abstract

Embodiments relate to smoking articles, and in particular to smoking articles that can be provided with a porous ceramic absorbent into which the aerosol-forming substrate is hygroscopic or wetted, thereby increasing the content of the aerosol-forming substrate.
The smoking article according to the embodiment includes a filter layer, a hollow tube layer laminated on the bottom of the filter layer, and a porous ceramic hygroscopic material laminated on the bottom of the hollow tube layer and absorbing moisture from the aerosol-forming substrate or wetted by the aerosol-forming substrate. and a wrapping part that surrounds the filter layer, the hollow tube layer, and the porous ceramic absorbent layer to maintain the laminated structure.

Description

SMOKING ARTICLE

Embodiments relate to smoking articles, and in particular to smoking articles that can be provided with a porous ceramic absorbent into which the aerosol-forming substrate is hygroscopic or wetted, thereby increasing the content of the aerosol-forming substrate.

Aerosols are small liquid or solid particles that exist in suspension in the atmosphere and usually have a size of 0.001 to 1.0 ㎛. In particular, there are cases where people inhale aerosols derived from various types of cigarette-type aerosol-generating products. For example, in response to the needs of consumers who prefer cigarette-type regular cigarettes, electronic cigarettes that have the filter part of a regular cigarette and the shape of a cigarette part are also being proposed. This electronic cigarette uses the inhaled substances contained in the cigarette part as electronic cigarettes. When vaporized with a heater, the user inhales it through a filter unit that has the same configuration as a regular cigarette.

The aerosol generating device according to the prior art is provided with a cavity into which a cigarette-type aerosol-generating article is inserted. For example, a pipe-shaped heater is installed on the outer periphery of the cavity to generate aerosol by heating the cigarette-type aerosol-generating article inserted into the aerosol generating device. is provided. Additionally, the aerosol generating device includes a battery for supplying power to the heater, and a control unit configured to control power supplied from the battery to the heater. In the above-described prior art, power is supplied to the heater from the battery under the control of the control unit, and the cigarette-type aerosol-generating article is heated by the heat generated from the heater, thereby generating aerosol from the aerosol-generating substrate in the cigarette-type aerosol-generating article.

Conventional cigarette-type aerosol-generating products are provided with a medium layer into which pulverized leaf tobacco such as cut candles or tobacco is inserted, but the amount of nicotine that can be contained in this medium layer increases without increasing the volume of the medium layer depending on the characteristics of the pulverized leaf tobacco. There is a problem that is difficult to solve.

The purpose of the embodiment is to provide a smoking article that can absorb moisture from the aerosol-forming substrate or increase the content of the aerosol-forming substrate by providing a porous ceramic moisture absorbent wetted with the aerosol-forming substrate.

The smoking article according to the embodiment includes a filter layer, a hollow tube layer laminated on the bottom of the filter layer, and a porous ceramic hygroscopic material laminated on the bottom of the hollow tube layer and absorbing moisture from the aerosol-forming substrate or wetted by the aerosol-forming substrate. and a wrapping part that surrounds the filter layer, the hollow tube layer, and the porous ceramic absorbent layer to maintain the laminated structure.

Additionally, the wrapping part preferably includes a first wrapping part made of a waterproof material that surrounds the porous ceramic moisture absorber layer.

In addition, the porous ceramic moisture absorber is a group consisting of magnesium silicate, aluminum silicate, silicate silicate, zeolite, titanium oxide, titanium carbide, zirconia, silica, silicon carbide, silicon nitride, mullite, cordierite, tungsten carbide, zirconium carbide, and aluminum nitride. It is preferable that it is configured to include at least one selected from .

In addition, the pore size of the porous ceramic moisture absorber is preferably in the range of 1 to 100㎛, or the porosity is preferably in the range of 30 to 70%.

In addition, the porous ceramic hygroscopic body preferably includes a magnetic material, or the porous ceramic hygroscopic body layer preferably includes a magnetic susceptor on the outer surface or inside the porous ceramic hygroscopic body.

Additionally, the porous ceramic moisture absorber preferably has a cavity in the vertical direction that communicates with the cavity of the hollow tube layer.

In addition, the porous ceramic hygroscopic material layer is a plate-shaped susceptor inserted into the hollow interior of the porous ceramic hygroscopic body, a tubular susceptor inserted into the hollow interior of the porous ceramic hygroscopic body and formed with a through hole, or at the bottom of the hollow of the porous ceramic hygroscopic body. It is desirable to include a band-type susceptor to be inserted.

In addition, the aerosol-forming substrate that is absorbed or wetted by the porous ceramic moisture absorbent is a substance containing at least one of fragrance, nicotine, VG (vegetable glycerin), PG (propylene glycol), fragrance, caffeine, tonic, and CBD, It is preferable that it is in a liquid or gel state.

In addition, the porous ceramic hygroscopic layer preferably includes a leakage prevention layer that is mounted on the bottom of the porous ceramic hygroscopic material to prevent leakage of the aerosol-forming substrate.

In the embodiment, the content of the aerosol-forming substrate can be increased by absorbing moisture from the aerosol-forming substrate or by providing a porous ceramic moisture absorber soaked with the aerosol-forming substrate, and heating by various heating methods (resistance heating, induction heating) is also possible. It works.

1 shows vertical cross-sectional views of smoking articles according to first and second embodiments; Figure 2 shows other examples of the porous ceramic moisture absorber layer of Figure 1.
Figure 3 shows further examples of the porous ceramic moisture absorber layer of Figure 1.

Hereinafter, embodiments are described in detail through the drawings. However, this is not intended to be limiting to specific embodiments, and the described embodiments should be understood to include various modifications, equivalents, and/or alternatives of the embodiments. In connection with the description of the drawings, similar reference numbers may be used for similar components.

In this document, expressions such as “have,” “may have,” “includes,” or “may include” refer to the existence of the corresponding feature (e.g., a numerical value, function, operation, or component such as a part). , and does not rule out the existence of additional features.

In this document, expressions such as “A or B,” “at least one of A or/and B,” or “one or more of A or/and B” may include all possible combinations of the items listed together. . For example, “A or B”, “at least one of A and B”, or “at least one of A or B” (1) includes at least one A, (2) includes at least one B, or (3) it may refer to all cases including both at least one A and at least one B.

As used herein, expressions such as "first", "second", "first", or "second" may describe various elements in any order and/or importance, and may refer to one element as another. It is only used to distinguish from components and does not limit the components. For example, a first user device and a second user device may represent different user devices regardless of order or importance. For example, a first component may be renamed a second component without departing from the scope of rights described in this document, and similarly, the second component may also be renamed to the first component.

A component (e.g., a first component) is “(operatively or communicatively) coupled with/to” another component (e.g., a second component). When referred to as being “connected to,” it should be understood that any component may be directly connected to the other component or may be connected through another component (e.g., a third component). On the other hand, when a component (e.g., a first component) is said to be “directly connected” or “directly connected” to another component (e.g., a second component), It may be understood that no other component (e.g., a third component) exists between other components.

The expression “configured to” used in this document may mean, for example, “suitable for,” “having the capacity to,” or “having the capacity to.” It can be used interchangeably with ", "designed to," "adapted to," "made to," or "capable of." The term “configured (or set) to” may not necessarily mean “specifically designed to” in hardware. Instead, in some contexts, the expression “a device configured to” may mean that the device is “capable of” working with other devices or components.

Terms used in this document are merely used to describe specific embodiments and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions, unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person of ordinary skill in the technical field described in this document. Among the terms used in this document, terms defined in general dictionaries may be interpreted to have the same or similar meaning as the meaning they have in the context of related technology, and unless clearly defined in this document, they may be interpreted in an ideal or excessively formal sense. It is not interpreted. In some cases, even terms defined in this document cannot be interpreted to exclude embodiments of this document.

1 shows vertical cross-sectional views of smoking articles according to first and second embodiments;

The smoking article in (a) of FIG. 1 includes a filter layer 10, which is a mouse filter, on the upper side, a hollow tube layer 20 laminated on the bottom of the filter layer 10, and a hollow tube layer 20 laminated on the bottom of the hollow tube layer 20, and aerosol Wrapping that surrounds the porous ceramic hygroscopic layer 30, which absorbs moisture from the formation substrate or is wetted by the aerosol-forming substrate, and the filter layer 10, the hollow tube layer 20, and the porous ceramic hygroscopic layer 30 to maintain the laminated structure. It is composed of parts 51, 53, and 55.

The filter layer 10 is a filter that functions as a mouthpiece, allowing aerosols to pass through and preventing liquid from entering. The filter layer 10 may be made of pulp and may be made in a cylindrical or tube shape. The filter layer 10 may be made of materials such as acetate, paper, and PP.

The hollow tube layer 20 has a hollow 22 extending in the vertical direction formed therein to provide a passage for the aerosol, and it contains PLA to lower the temperature of the aerosol to prevent the user from getting burned when inhaling the aerosol. You may. The hollow tube layer 20 may be made of cellulose acetate, and the hollow tube layer 20 functioning as a cooling structure may be made of pure polylactic acid or by combining polylactic acid with other degradable polymers.

The porous ceramic hygroscopic material layer 30 is a porous ceramic hygroscopic material that contains, absorbs, or wets a liquid or gel-type aerosol-forming substrate through capillary action caused by pores formed in the porous ceramic and doubles the hygroscopic power through surface tension using hydrophilic properties. Includes (30a). The porous ceramic moisture absorber 30a is made of magnesium silicate, aluminum silicate, silicate silicate, zeolite, titanium oxide, titanium carbide, zirconia, silica, silicon carbide, silicon nitride, mullite, cordierite, tungsten carbide, zirconium carbide, and aluminum nitride. It is composed of at least one selected from the group.

The size (diameter) of the pores of the porous ceramic hygroscopic body 30a is determined depending on the aerosol being hygroscopic. In this embodiment, the pore size of the porous ceramic hygroscopic body 30a is in the range of 1 to 100㎛. The porosity of the porous ceramic moisture absorber 30a is in the range of 30 to 70%.

In this specification, the aerosol-forming base is a substance containing at least one of fragrance, nicotine, VG (vegetable glycerin), PG (propylene glycol), flavoring agent, caffeine, tonic, CBD, etc., and is in a liquid or gel state. . The aerosol-forming substrate exists in a gel or solid state at room temperature and has the characteristic of being vaporized into an aerosol in the temperature range of 150 to 300°C. In particular, the above-mentioned porosity is related to the amount of the aerosol-forming substrate contained or contained in the porous ceramic hygroscopic body 30a, and a larger amount of the aerosol-forming substrate is included in the porous ceramic hygroscopic body compared to the sheath layer of the prior art with the same volume. It may be contained in (30a).

The porous ceramic moisture absorber layer 30 may be provided with a leakage prevention layer (not shown) to prevent the aerosol-forming base material from leaking from the bottom of the porous ceramic moisture absorber 30a. The leakage prevention layer is made of a waterproof membrane with microholes or a silicone material with microholes, allowing airflow to penetrate the porous ceramic moisture absorber layer 30 through the leakage prevention layer to form an airflow path.

The wrapping part surrounds the porous ceramic moisture absorber layer 30 and includes a first wrapping part 51 to prevent leakage of the aerosol-forming base material when heated by a heating device, a hollow tube 20, and a first wrapping part 51. A second wrapping part 53 that surrounds the porous ceramic hygroscopic layer 30 wrapped by and maintains the laminated structure of the hollow tube 20 and the porous ceramic hygroscopic layer 30, a filter layer 10, and a second Surrounding the hollow tube 20 and the porous ceramic absorbent layer 30 wrapped by the wrapping portion 53, it maintains the laminated structure of the filter layer 10, the hollow tube 20, and the porous ceramic absorbent layer 30. It is configured to include a third wrapping part (55).

The first wrapping part 51 is made of paper or membrane material with a waterproof coating to prevent leakage of the aerosol-forming substrate. The second and third wrapping parts 53 and 55 may be made of plain paper or porous paper.

The smoking article according to (a) of FIG. 1 may be heated by being inserted into a heating space within a heating device to which a resistance heating method such as a film heater is applied. In another embodiment, it may be inserted into a heating space within a heating device to which an induction heating method is applied. You can. To apply this induction heating method, the porous ceramic hygroscopic body 30a of the porous ceramic hygroscopic body layer 30 is composed of a conductive material (powder), and the wrapping part is made of a metal component-free material to prevent loss of magnetic induction heating efficiency. It is made of paper.

The smoking article according to Figure 1(b) has a porous ceramic absorbent layer 31 instead of the porous ceramic absorbent layer 30 shown in Figure 1(a).

The porous ceramic moisture absorber layer 31 includes a susceptor 40 inside the porous ceramic moisture absorber 31a. The susceptor 40 is for induction heating and is made of a magnetic material, for example, a metal with a magnetic component such as SPCE, SPCC, Kanthal, etc. The susceptor 40 may have, for example, a rod-shaped or needle-shaped structure.

Figure 2 shows other examples of the porous ceramic moisture absorber layer of Figure 1. This embodiment is for a case where a smoking article is inserted into the heating space of a heating device using an induction heating method and heated. The material and characteristics of the porous ceramic hygroscopic layer in FIG. 2 are the same or similar to the materials and characteristics of the porous ceramic hygroscopic layers 30a and 31a in FIG. 1 (a) and (b), and the material of the susceptor is also They are the same or similar, but the structure and mounting location of the susceptor are different. Figures 2 (a) to (f) are perspective views from the bottom of the porous ceramic moisture absorber layer 30.

The porous ceramic hygroscopic body layer in (a) of FIG. 2 includes a cylindrical porous ceramic hygroscopic body 30a and a plurality of band-shaped susceptors 41a mounted on the outer surface of the porous ceramic hygroscopic body 30a at a certain distance from each other. ) and a leakage prevention layer 60 formed on the bottom of the porous ceramic moisture absorber 30a.

The porous ceramic moisture absorber layer in (b) of FIG. 2 includes a cylindrical porous ceramic moisture absorber (30a) and a single band-shaped susceptor (41a) formed close to the bottom of the outer surface of the porous ceramic moisture absorber (30a). It consists of:

The porous ceramic moisture absorber layer in (c) of FIG. 2 includes a cylindrical porous ceramic moisture absorber (30a) and a plurality of band-shaped susceptors (41a) mounted at regular intervals on the outer surface of the porous ceramic moisture absorber (30a). And, it is configured to include at least one bar-shaped susceptor (41b) that connects the plurality of band-shaped susceptors (41a) vertically and electrically.

The porous ceramic hygroscopic material layer in (d) of FIG. 2 includes a cylindrical porous ceramic hygroscopic material 30a and a plurality of rod-shaped structures extending in the vertical direction on the outer surface of the porous ceramic hygroscopic material 30a and spaced apart from each other at a predetermined distance. It is composed of a scepter (41c).

The porous ceramic moisture absorber layer in (e) of FIG. 2 includes a cylindrical porous ceramic moisture absorber (30a) and a cross-shaped susceptor (41d) mounted on the lower side of the porous ceramic moisture absorber (30a) to cross each other. do. The ends of the cross-shaped susceptor 41d extend to the outer surface of the porous ceramic moisture absorber 30a.

The porous ceramic moisture absorber layer in (f) of Figure 2 has a cylindrical shape and includes a porous ceramic moisture absorber (30b) with grooves (A) formed along the outer and lower sides, and a groove (A) of the porous ceramic moisture absorber (30b). It is configured to include a U-shaped susceptor (41e) that is inserted and extended.

The leakage prevention layer 60 of FIG. 2 (a) may also be applied to each of (b) to (f) of FIG. 2 .

Figure 3 shows further examples of the porous ceramic moisture absorber layer of Figure 1. Figures 3 (a) to (d) are perspective views from the bottom of the porous ceramic moisture absorber layer 32.

The porous ceramic hygroscopic body layers 32 in (a) to 3 (d) of FIG. 3 commonly include a porous ceramic hygroscopic body 32a in the form of a cylindrical tube with a hollow B formed in the vertical direction. The hollow B is in communication with the hollow 22 of the hollow tube layer 20, and the diameter of the hollow B is larger than or equal to the diameter of the hollow 22, so that the heating device is formed in the porous ceramic moisture absorber layer 32. The aerosol generated by heating is concentrated in the hollow 22 and discharged.

The porous ceramic moisture absorber layer 32 in (a) of FIG. 3 includes a leakage prevention layer 62 on the bottom of the porous ceramic moisture absorber 32a. The leak prevention layer 62 may be made of the same material as the leak prevention layer 60, but may be made of a tube-shaped plate.

The porous ceramic moisture absorber layer 32 in (b) of FIG. 3 includes a plate-shaped susceptor 42 extending in the vertical direction across the hollow B of the porous ceramic moisture absorber 32a. At least a portion of both ends of the plate-shaped susceptor 42 is in contact with the inner surface of the hollow B of the porous ceramic moisture absorber 32a, is inserted and fixed into the interior, or is press-fitted or press-fitted to the inner surface of the hollow B. Thus, the heat energy generated in the plate-shaped susceptor 42 during induction heating is transferred or diffused to the porous ceramic moisture absorber 32a, and the moisture-absorbed aerosol-forming substrate can be converted into an aerosol and discharged.

The porous ceramic moisture absorber layer 32 in (c) of FIG. 3 is inserted and mounted into the hollow B of the porous ceramic moisture absorber 32a, and is provided with a tubular susceptor 43 having a cavity formed in the vertical direction. The outer surface of the tubular susceptor 43 is mounted and fixed in contact with the inner surface of the hollow B, so that the heat energy generated in the tubular susceptor 43 during induction heating is transmitted to the porous ceramic moisture absorber 32a. It spreads. In addition, the tubular susceptor 43 is provided with a plurality of through holes 43a that communicate with the outside and inside (hollow) of the tubular susceptor 43. An aerosol is generated by induction heating in the tubular susceptor 43 within the porous ceramic hygroscopic body 32a and is discharged into the hollow B through the through holes 43a, thereby forming the hollow of the hollow tube layer 20. Following 22), it moves to the filter layer 10 and is discharged to the outside.

The vertical height of the tubular susceptor 43 is less than or equal to the height of the hollow B, and is at least half of the hollow B.

The porous ceramic moisture absorber layer 32 in (d) of FIG. 3 includes a band-shaped or ring-shaped susceptor 44 that is inserted and mounted at the lower end of the hollow B of the porous ceramic moisture absorber 32a. The outer surface of the band-type susceptor 44 is mounted and fixed in contact with the inner surface of the hollow B, so that the heat energy generated by the band-type susceptor 44 during induction heating is transferred to the porous ceramic moisture absorber 32a. transmitted or spread.

The vertical height of the band-type susceptor (44) is smaller than the height of the tubular susceptor (43) and smaller than the height of the hollow (B), so the band-type susceptor (44) needs to be provided with the above-described through hole (43a). There is no However, the band-type susceptor 44 may also have a through hole.

The leakage prevention layer 62 of Figure 3 (a) may also be applied to each of Figures 3 (b) to (d).

Each of the above-described ceramic moisture absorbers (30a), (30b), (31a), and (32a) may be provided with a plurality of holes or grooves perforated from the outer surface toward the inside, and the diameter of the holes is 100㎛ ~ 2000㎛. The area of the holes ranges from 10 to 35% of the total outer surface area.

As explained above, it is not limited to the specific preferred embodiments described above, and various modifications can be made by anyone skilled in the art without departing from the gist of the claims. Of course, such changes are within the scope of the claims.

10: filter layer 20: hollow tube layer
30: Porous ceramic moisture absorber layer

Claims (9)

a filter layer;
A hollow tube layer stacked on the bottom of the filter layer;
a porous ceramic moisture absorbent layer laminated on the bottom of the hollow tube layer and including a porous ceramic moisture absorbent that absorbs moisture from the aerosol-forming substrate or is wetted by the aerosol-forming substrate;
A smoking article comprising a wrapping portion that surrounds the filter layer, the hollow tube layer, and the porous ceramic absorbent layer to maintain the laminated structure. According to claim 1,
A smoking article characterized in that the wrapping part includes a first wrapping part made of a waterproof material surrounding a porous ceramic moisture absorbent layer. According to claim 1,
The porous ceramic moisture absorber is selected from the group consisting of magnesium silicate, aluminum silicate, silicate silicate, zeolite, titanium oxide, titanium carbide, zirconia, silica, silicon carbide, silicon nitride, mullite, cordierite, tungsten carbide, zirconium carbide, and aluminum nitride. A smoking article characterized by comprising at least one or more. According to claim 1,
A smoking article characterized in that the pore size of the porous ceramic moisture absorber is in the range of 1 to 100㎛, or the porosity is in the range of 30 to 70%. According to claim 1,
A smoking article characterized in that the porous ceramic hygroscopic body includes a magnetic material, or the porous ceramic hygroscopic material layer includes a susceptor of a magnetic material on the outer surface or inside of the porous ceramic hygroscopic material. According to claim 1,
A smoking article characterized in that the porous ceramic moisture absorbent has a cavity in the vertical direction communicating with the cavity of the hollow tube layer. According to claim 6,
The porous ceramic hygroscopic material layer is a plate-shaped susceptor inserted into the hollow interior of the porous ceramic hygroscopic body, a tubular susceptor inserted into the hollow interior of the porous ceramic hygroscopic body and formed with a through hole, or a susceptor inserted into the hollow bottom of the porous ceramic hygroscopic body. A smoking article comprising a band-type susceptor. The method according to any one of claims 1 to 7,
The aerosol-forming substrate that is absorbed or soaked in the porous ceramic moisture absorbent is a substance containing at least one of fragrance, nicotine, VG (vegetable glycerin), PG (propylene glycol), flavoring agent, caffeine, tonic, and CBD, and is in liquid form or A smoking article characterized in that it is in a gel state. The method according to any one of claims 1 to 7,
A smoking article characterized in that the porous ceramic hygroscopic material layer includes a leakage prevention layer mounted on the bottom of the porous ceramic hygroscopic material to prevent leakage of the aerosol-forming substrate.

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