KR20240013388A - Smoking article - Google Patents

Abstract

Embodiments relate to smoking articles, and in particular to smoking articles comprising a cooling portion comprised of a porous moisture absorbent for cooling hot aerosols.
The smoking article according to the embodiment includes a filter layer, a cooling unit laminated at the bottom of the filter layer and made of a porous moisture absorbent, a medium layer that includes a solid aerosol-forming substrate, or absorbs or wets an aerosol-forming substrate in a liquid or gel state, a filter layer, and It includes a wrapping part that surrounds the cooling part and the medium layer to maintain the laminated structure.

Description

SMOKING ARTICLE

Embodiments relate to smoking articles, and in particular to smoking articles comprising a cooling portion comprised of a porous moisture absorbent for cooling hot aerosols.

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 have a layered structure of a media layer into which pulverized leaf tobacco such as cut candles or tobacco is inserted, a hollow tube, and a mouth filter, and the high-temperature aerosol generated in the media layer by heating is transmitted into the hollow tube or mouth. There is a problem with the filter not cooling well.

The purpose of the embodiment is to provide a smoking article including a cooling unit made of a porous moisture absorbent for cooling high-temperature aerosol and preventing leakage.

The smoking article according to the embodiment includes a filter layer, a cooling unit laminated at the bottom of the filter layer and made of a porous moisture absorbent, a medium layer that includes a solid aerosol-forming substrate, or absorbs or wets an aerosol-forming substrate in a liquid or gel state, a filter layer, and It includes a wrapping part that surrounds the cooling part and the medium layer to maintain the laminated structure.

In addition, the porous moisture absorber in the cooling section is a porous ceramic moisture absorber, and includes magnesium silicate, aluminum silicate, silicic acid silicate, zeolite, titanium oxide, titanium carbide, zirconia, silica, silicon carbide, silicon nitride, mullite, cordierite, tungsten carbide, and carbide. It is preferably composed of at least one selected from the group consisting of zirconium and aluminum nitride.

In addition, the porous moisture absorbent in the cooling part is preferably in the form of powder, a molded body made of sintered powder, a bead, or a combination thereof.

In addition, it is preferable that the size of the beads of the porous moisture absorber of the cooling part in the bead state is in the range of 1 to 500㎛.

also, It is preferable that the porous moisture absorbent in the cooling section is made of a hydrophobic material.

In addition, the medium layer preferably includes a porous ceramic moisture absorbent that contains, absorbs moisture, or is wetted with the aerosol-forming substrate.

Additionally, it is preferable that a hollow tube layer is provided between the cooling unit and the medium layer.

In the embodiment, the high-temperature aerosol generated in the medium layer by heating can be cooled to a greater temperature by a cooling unit containing a porous moisture absorbent, and the liquefied residue of the aerosol remains in the cooling unit and leaks to the outside of the smoking article. It has the effect of preventing this from happening.

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

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 dictates 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 of FIG. 1 (A), which is the first embodiment, has a filter layer 10, which is a mouth filter, on the upper side, a cooling part 20 composed of a porous moisture absorbent laminated at the bottom of the filter layer 10, and a hollow body in the vertical direction ( It is composed of a hollow tube layer 30 with 32) formed thereon, and a medium layer 40 that is laminated on the bottom of the hollow tube layer 30 and absorbs moisture from the aerosol-forming substrate or contains the aerosol-forming substrate. In addition, the smoking article includes a wrapping part (not shown) that surrounds the filter layer 10, the cooling part 20, the hollow tube layer 30, and the medium layer 40 and maintains the laminated structure. do.

The filter layer 10 is a filter that functions as a mouthpiece, allowing aerosols to pass through and preventing the inflow of some liquid. 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 cooling unit 20 is made of a three-dimensional porous moisture absorber, for example, a porous ceramic moisture absorber. The cooling unit 20 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 consists of one or more selected items. The constituent materials of the porous moisture absorbent of the cooling unit 20 are in the form of powder, a molded body obtained by sintering the powder, a bead or spherical form, or a combination thereof. The size (or diameter or length) of the bead of the porous moisture absorber of the cooling unit 20 in the bead state is preferably in the range of 1 to 500㎛.

The porous moisture absorbent has a structure with pores, and the porosity of the porous moisture absorbent is preferably in the range of 10 to 70%.

The porous moisture absorbent of the cooling unit 20 is preferably made of a hydrophobic material.

The wrapping part additionally includes a first wrapping part surrounding the filter layer 10 and the cooling unit 20, and the first wrapping part may be made of plain paper, porous paper, or the like.

The hollow tube layer 30 has a hollow 32 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 30 may be made of cellulose acetate, and the hollow tube layer 30 functioning as a cooling structure may be made of pure polylactic acid or by combining polylactic acid with other degradable polymers.

The medium layer 40 is a layer that contains a solid aerosol-forming substrate or absorbs moisture from a liquid or gel aerosol-forming substrate. Here, the solid aerosol-forming substrate may be composed of only a cut herb or a cut herb soaked in nicotine, VG (vegetable glycerin), PG (propylene glycol), etc. In addition, the medium layer 40 that absorbs moisture from the liquid or gel aerosol-forming substrate is composed of a porous moisture absorbent, and the porous moisture absorbent absorbs or wets the liquid or gel aerosol-forming substrate. The liquid or gel aerosol-forming base is a substance containing at least one of nicotine, VG (vegetable glycerin), PG (propylene glycol), flavoring, perfume, caffeine, tonic, CBD, etc., and is in a liquid or gel state. .

The porous moisture absorbent of the medium layer 40 is a porous ceramic that retains, absorbs, or wets the liquid or gel-type aerosol-forming substrate through capillary action caused by pores formed in the porous ceramic and doubles the moisture absorption through surface tension using hydrophilic properties. Contains a moisture absorber. The porous ceramic moisture absorber of the medium layer 40 is magnesium silicate, aluminum silicate, silicate silicate, zeolite, titanium oxide, titanium carbide, zirconia, silica, silicon carbide, silicon nitride, mullite, cordierite, tungsten carbide, zirconium carbide, and nitride. It is composed of at least one selected from the group consisting of aluminum.

The size (diameter) of the pores of the porous moisture absorbent of the medium layer 40 is determined depending on the amount of aerosol absorbed, and in this embodiment, the size of the pores of the porous ceramic moisture absorbent (30a) is 1~ It is in the 100㎛ range, and the porosity of the porous ceramic moisture absorber (30a) is in the 30-70% range.

The wrapping part may be provided with a metal paper layer (not shown) in the form of aluminum foil to prevent the aerosol-forming base material from leaking from the side or bottom of the porous absorbent layer of the medium layer 40.

After the smoking article is inserted into the heating space of the aerosol generating device, at least the medium layer 40 is heated, and an aerosol is generated in the medium layer 40. When the user inhales the filter layer 10, air is introduced through the airflow path in the aerosol generating device, and the introduced air and generated aerosol are cooled while passing through the hollow tube layer 30 and the cooling unit 20 to filter layer ( 10) It is inhaled by the user. The cooling unit 20 can reduce the temperature of the high-temperature aerosol by reducing the moving speed of the aerosol or increasing the contact area with the aerosol due to the pores inside. In addition, in the process of cooling while generating aerosol, liquid droplets are generated or exist inside the smoking article. These liquid crystals are absorbed into the cooling unit 20 and do not leak to the outside of the smoking article.

The smoking article of FIG. 1 (B), which is the second embodiment, includes a filter layer 10, which is a mouth filter, on the upper side, a cooling section 22 composed of a porous moisture absorbent laminated at the bottom of the filter layer 10, and a cooling section 22. It is laminated at the bottom and includes a medium layer 42 that absorbs moisture from the aerosol-forming substrate or contains the aerosol-forming substrate. In addition, the smoking article includes a wrapping part (not shown) that surrounds the filter layer 10, the cooling part 22, and the medium layer 42 and maintains the laminated structure.

Since the smoking article in the second embodiment does not have a hollow tube layer, it has a cooling section 22 that is longer in the vertical direction than the cooling section 20 of the smoking article in the first embodiment, and The length of the layer 42 in the vertical direction may be longer than the length of the medium 40 in the first embodiment.

The wrapping part may be provided with a second wrapping part surrounding the filter layer 10 and the cooling part 22, and the second wrapping part may be made of plain paper, porous paper, etc.

The cooling process of the aerosol in the smoking article in the second embodiment differs from the smoking article in the first embodiment in that it is performed only by the cooling unit 22.

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: cooling unit
30: hollow tube layer 40: medium layer

Claims (7)

a filter layer;
a cooling unit stacked at the bottom of the filter layer and made of a porous moisture absorbent;
a medium layer containing a solid aerosol-forming substrate or absorbing or moistening a liquid or gel-like aerosol-forming substrate;
A smoking article comprising a wrapping part that surrounds the filter layer, the cooling part, and the medium layer to maintain the laminated structure. According to claim 1,
The porous moisture absorber in the cooling section is a porous ceramic moisture absorber,
Contains at least one 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 in that it consists of: According to claim 2,
A smoking article characterized in that the porous moisture absorbent in the cooling section is in the form of a powder, a molded body made of sintered powder, a bead, or a combination thereof. According to claim 3,
A smoking article characterized in that the size of the beads of the porous moisture absorbent of the cooling part in the bead state is in the range of 1 to 500㎛. The method according to any one of claims 1 to 4,
A smoking article characterized in that the porous moisture absorbent in the cooling part is made of a hydrophobic material. According to claim 1,
A smoking article wherein the medium layer includes a porous ceramic moisture absorbent that impregnates, absorbs moisture, or is wetted with an aerosol-forming substrate. According to claim 1,
A smoking article characterized in that a hollow tube layer is provided between the cooling unit and the medium layer.