KR20230151448A - Electrically-heating type smoking articles - Google Patents

Abstract

The present invention relates to a heated smoking article, and more particularly, to a heated smoking article including a ceramic moisture absorbent that is easy to manufacture and has improved aerosol generation efficiency. A heated smoking article according to an embodiment of the present invention includes a filter rod; a cooling tube rod stacked at the bottom of the filter rod and having a hollow shape in an upward and downward direction; an aerosol medium rod stacked at the bottom of the cooling tube rod and containing a gel-like aerosol medium; a ceramic moisture absorber laminated on the bottom of the aerosol media rod; It includes a wrapping paper that wraps the filter rod, the cooling tube rod, the aerosol media rod, and the ceramic hygroscopic body to maintain a laminated structure, wherein the ceramic hygroscopic body is nicotine liquid; and a plurality of porous granules having micro pores formed on the surface or inside, wherein macro pores are formed between the plurality of porous granules, and the nicotine liquid is accommodated in the micro pores and the macro pores.

Description

Heated smoking articles {ELECTRICALLY-HEATING TYPE SMOKING ARTICLES}

The present invention relates to a heated smoking article, and more particularly, to a heated smoking article including a ceramic moisture absorbent that is easy to manufacture and has improved aerosol generation efficiency.

In recent years, there has been an increasing demand for alternative methods to overcome the disadvantages of regular cigarettes. For example, there is an increasing demand for a method in which aerosol is generated by heating the aerosol-generating material in the cigarette, rather than a method of generating aerosol by burning a cigarette.

In general, slurry leaf sheets, which are the main raw material of the tobacco medium, have weak tensile strength and are difficult to manufacture, and the tobacco medium contains a large amount of humectants, making its physical properties weak. In addition, tobacco media containing liquids such as glycerin are sensitive to humidity in the surrounding environment due to their hydrophilic nature, making it difficult to control the manufacturing process environment. There is a limit to the amount of liquid that can be contained in the tobacco medium.

In addition to cigarettes containing tobacco media, it has been proposed that the liquid is stored in a separate cartomizer to generate additional aerosol, so that when the user inhales the cigarette, the aerosol derived from the liquid is inhaled through the cigarette. However, it has been proposed that the liquid contained in the cartomizer is There are difficulties in managing the liquid (expiration date, deterioration, etc.), and condensation may occur in the airflow path through which the aerosol generated in the cartomizer moves, causing contamination.

Accordingly, there is a need to provide an aerosol medium and obtain aerosol from a heated smoking article that is discarded after one use.

The purpose of the present invention is to provide a heated smoking article that includes an aerosol medium capable of generating aerosol by heating rather than combustion, and a ceramic moisture absorber that absorbs nicotine liquid and has improved aerosol generation efficiency.

Another object of the present invention is to provide a heated smoking article including a ceramic moisture absorbent that is formed from a collection of porous granules, allowing smooth moisture absorption and transport of nicotine liquid and thereby increasing the amount of aerosol generated.

A heated smoking article according to an embodiment of the present invention includes a filter rod; a cooling tube rod stacked at the bottom of the filter rod and having a hollow shape in an upward and downward direction; an aerosol medium rod stacked at the bottom of the cooling tube rod and containing a gel-like aerosol medium; a ceramic moisture absorber laminated on the bottom of the aerosol media rod; It includes a wrapping paper that wraps the filter rod, the cooling tube rod, the aerosol media rod, and the ceramic hygroscopic body to maintain a laminated structure, wherein the ceramic hygroscopic body is nicotine liquid; and a plurality of porous granules having micro pores formed on the surface or inside, wherein macro pores are formed between the plurality of porous granules, and the nicotine liquid is accommodated in the micro pores and the macro pores.

Additionally, depending on the embodiment, the micro pores are formed through the Bernard Cell phenomenon.

Additionally, depending on the embodiment, the porous granules are in the form of beads or spherical powder.

Additionally, depending on the embodiment, the porous grains are composed of metal components and silicates.

Additionally, depending on the embodiment, the metal component is an alkaline earth group.

Additionally, depending on the embodiment, the porous granules include fiber glass.

Additionally, in some embodiments, the fiber glass includes SiO2 in a weight percent of at least 50%.

Additionally, depending on the embodiment, the micro pores range from 20 ㎛ to 50 ㎛.

Additionally, depending on the embodiment, the macro pores range from 1 ㎛ to 20 ㎛.

Additionally, depending on the embodiment, the porous grains may be magnesium silicate, aluminum silicate, silicate silicate, zeolite, titanium oxide, titanium carbide, zirconia, silica, silicon carbide, silicon nitride, mullite, cordierite, tungsten carbide, zirconium carbide, aluminum nitride. It is composed of one or more substances selected from the group containing.

Additionally, depending on the embodiment, the porous grains have a diameter of 10 ㎛ to 400 ㎛.

In addition, depending on the embodiment, the nicotine liquid contains one or more substances that can be converted into an aerosol by heating, such as flavoring, VG (vegetable glycerin), PG (propylene glycol), medicine, and cloves.

Additionally, depending on the embodiment, the nicotine liquid is mixed with the plurality of porous granules and is absorbed into the micro pores and macro pores.

Additionally, depending on the embodiment, the gel-like aerosol medium includes at least VG (vegetable glycerin) and PG (propylene glycol).

In addition, according to the embodiment, a separate wrapping paper is included for wrapping the ceramic moisture absorber into a cylinder shape.

In addition, depending on the embodiment, a porous grain leak prevention structure is provided at the bottom of the ceramic moisture absorber.

According to an embodiment of the present invention, it is possible to provide a heated smoking article including an aerosol medium capable of generating an aerosol by heating rather than combustion, and a ceramic moisture absorber that absorbs nicotine liquid and has improved aerosol generation efficiency. there is.

In addition, according to an embodiment of the present invention, the ceramic moisture absorber is composed of porous granules or spherical granules with an increased specific surface area, thereby increasing the amount of moisture absorption of the nicotine liquid and the amount of nicotine liquid transported due to the capillary phenomenon. By increasing it, there is an effect of ultimately increasing the amount of aerosol generated.

In addition, the unit grains of the ceramic moisture absorber according to the embodiment of the present invention are composed of porous grains or porous spherical grains that undergo the Bernard cell phenomenon, so that defects are induced on the surface of the particles by the Bernard cell phenomenon, resulting in porous grains. It has the effect of increasing the specific surface area, thereby increasing the moisture absorption of the nicotine liquid, and ultimately increasing the amount of aerosol generated.

In addition, according to an embodiment of the present invention, porous granules can be easily absorbed by mixing them with nicotine liquid, which has the effect of facilitating manufacturing.

In addition, according to an embodiment of the present invention, a porous grain leak prevention structure is provided at the bottom of the ceramic moisture absorber to prevent porous grains from flowing downward.

1 is a vertical cross-sectional view conceptually showing the interior of a heated smoking article 1 according to an embodiment of the present invention;
Figure 2 is a cross-sectional view conceptually showing the ceramic moisture absorber 40 according to an embodiment of the present invention.
Figure 3 is a scanning microscope photograph of a plurality of porous grains (40a) according to an embodiment of the present invention;
Figure 4 is a conceptual plan view of porous grains 40a according to an embodiment of the present invention.
Figure 5 is a process concept diagram expressing a method of manufacturing a ceramic moisture absorber 40 according to an embodiment of the present invention.

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.

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.

FIG. 1 is a vertical cross-sectional view conceptually showing the inside of a heated smoking article 1 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view conceptually showing the ceramic moisture absorber 40 according to an embodiment of the present invention. Figure 3 is a scanning microscope photograph of a plurality of porous grains 40a according to an embodiment of the present invention, and Figure 4 is a conceptual plan view of the porous grains 40a according to an embodiment of the present invention. In the drawings of the present disclosure, the sizes of certain components, particularly the porous grains 40a, are exaggerated for visibility, and the sizes of the components are not limited by their relative sizes in the drawings.

A heated smoking article (1) according to an embodiment of the present invention includes a filter rod (10), which is a mouth filter, on the upper side, a cooling tube rod (20) that is laminated at the bottom of the filter rod (10) and is hollow in the vertical direction, and , an aerosol medium rod (30) laminated on the bottom of the cooling tube rod (20) and in which the gel-like aerosol medium is moisture-absorbed, a ceramic moisture absorber (40) laminated on the bottom of the aerosol medium rod (30), and a filter rod (10). and a wrapping paper 50 that wraps the cooling tube rod 20, the aerosol medium rod 30, and the ceramic moisture absorber 40 to maintain the laminated structure.

In addition, the ceramic hygroscopic body 40 includes nicotine liquid and a plurality of porous granules (40a) with micropores (A) formed on the surface or inside, and macropores (B) are formed between the plurality of porous granules (40a). And the nicotine liquid is accommodated in the micro pores (A) and macro pores (B).

The filter rod 10 is a filter that functions as a mouthpiece, allowing aerosols to pass through and preventing liquid from entering. The filter rod 10 may be made of pulp and may be made in a cylindrical or tube shape. The filter rod 10 may be made of materials such as cellulose acetate, paper, PP, and PLA. Meanwhile, the filter rod 10 can improve user satisfaction by including flavoring ingredients. Flavoring ingredients include, for example, licorice, sucrose, fructose syrup, iso-sweeteners, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon. Oils may include orange oil, mint oil, cinnamon, caraway, cognac, jasmine, chamomile, menthol, cinnamon, ylang ylang, sage, spearmint, ginger, coriander or coffee.

The cooling tube rod 20 has a hollow 22 extending in the vertical direction formed therein to provide a passage for the aerosol. It contains PLA and lowers the temperature of the aerosol to prevent the user from getting burned when inhaling the aerosol. You may. The cooling tube rod 20 may be made of cellulose acetate, and the cooling tube rod 20 serving as the cooling structure may be made of pure polylactic acid or by combining polylactic acid with other degradable polymers. The wrapping paper 50 may be made of, for example, plain paper or porous paper.

According to the embodiment, it includes a separate wrapping paper 41 that wraps the aerosol medium aggregate 40 included in the heated smoking article 1 into a cylindrical shape.

The heated smoking article 1 may be inserted into a predetermined aerosol generating device so that the ceramic moisture absorbent 40 is heated, thereby forming micropores A within the porous granules 40a or between the porous granules 40a. Aerosols originating from the nicotine liquid contained in the macro pores (B) may be generated.

As the aerosol derived from the ceramic moisture absorber 40 passes through the aerosol medium rod 30, it will be mixed with the aerosol derived from the aerosol medium rod 30 and the user will puff it.

In addition, depending on the embodiment, a porous grain leakage prevention structure 42 is provided at the bottom of the ceramic moisture absorber 40. The porous grain leak prevention structure 42 is provided, for example, in the form of a membrane that prevents the flow of porous grains, and is permeable to gas and impermeable to liquid. Therefore, it is possible to prevent not only leakage of the porous granules but also flow of nicotine liquid downward from the porous granules at high temperatures.

The heated smoking article 1 according to an embodiment may be heated by being inserted into a heating space in 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 to a heating device to which an induction heating method is applied. It may be possible.

The heating device has a heating space (cavity) into which the heated smoking article (1) can be inserted and heated, and the aerosol medium such as glycerin, the tobacco body and/or nicotine of the heated smoking article (1) inserted into the heating space. It refers to an aerosol-generating device of a grippable and portable size that forms an aerosol by heating the same aerosol-forming substrate with a heater. The heater may be provided as a resistance heating type or an induction heating type as described above, for example, heated to a temperature of 100 - 400 ° C, and placed inside the heated smoking article (1) inserted into the heating space (cavity) of the heating device. An aerosol is generated by heating the provided aerosol medium or forming substrate. According to a preferred embodiment, the target temperature may be in the range of 200 to 350 °C, and according to a more preferred example, the target temperature may be in the range of 250 to 320 °C (for example, 280 °C as the target). may be determined). In some cases, the target temperature may be in the range of 150 to 250 ℃ (for example, 180 ℃ may be set as the target temperature), which means that the object to generate aerosol is glycerin, cigarette change, or a liquid such as glycerin. It may vary depending on whether the composition is a moisture-absorbed cigarette change or nicotine liquid. In any case, the aerosol generated within the heated smoking article (1) is inhaled into the user's mouth through the cooling tube rod (20) and the filter rod (10) when the user puffs, so it is generated even considering cooling during the puffing process. If the temperature of the aerosol is excessively high, it may cause discomfort to the user or cause burns, and too much aerosol may be generated, making multiple puffs difficult. Taking this into account, the target temperature of the heating element must be determined in advance. Additionally, for the above reasons, the upper limit of the target temperature of the heating element is limited as above.

According to a preferred embodiment, the temperature at which the generated aerosol passes through the cooling tube rod 20 and the filter rod 10 can be measured as the mouth end temperature. In order to avoid causing discomfort to the user, the temperature of the aerosol may be measured. The temperature should be below 50°C, preferably below 45°C. The mouth end temperature of a preferred aerosol is in the temperature range of 25 to 45° C., and the more preferred mouth end temperature of the aerosol is in the temperature range of 30 to 40° C.

When the target temperature of the aerosol medium load 30 and the target temperature of the nicotine liquid moisture absorbed by the ceramic moisture absorber 40 are different, an aerosol medium load 30 corresponding to each target temperature is provided in the heating space of the heating device, It is desirable that an independent heater capable of heating the ceramic moisture absorber 40 is provided. For example, if the target temperature of the aerosol medium load is different from the target temperature of the nicotine liquid phase, a heater (for example, a resistance heating heater) for heating the aerosol medium load 30 and a heater (for example, a resistance heating heater) for heating the ceramic hygroscopic body 40 may be used. For example, resistance heating heaters) are spaced apart from each other and heat the aerosol medium rod 30 and the ceramic hygroscopic body 40 in different temperature ranges, thereby effectively dissipating the aerosols derived from the aerosol medium rod 30 and the ceramic hygroscopic body 40, respectively. It is better to make it happen.

Referring to FIGS. 2 to 4, the porous grains 40a are unit elements forming the ceramic moisture absorber 40, and in particular, in this embodiment, they are formed using the Bernard Cell phenomenon. Due to the Barnard cell phenomenon, defects, that is, micropores (A), are induced on the surface of the particles, which can eventually increase the specific surface area of the porous grains (40a) and thereby increase the amount of moisture absorption of the nicotine liquid, and ultimately. The amount of aerosol generated from the ceramic moisture absorber 40 can be increased.

An exemplary method of manufacturing a plurality of porous grains 40a with micropores formed on the surface or inside using the Bernard Cell phenomenon is to prepare a first dispersion solution by dispersing silicate powder and a binder bound to metal ions in a first solvent. a step of preparing a second dispersion solution by dispersing and stirring the additive in a second solvent, preparing a mixed slurry by mixing and stirring the first dispersion solution and the second dispersion solution, and spray drying the mixed slurry. Includes.

At this time, the metal silicate powder preferably contains one or more metal ions selected from Mg, Al, Zr, Li, Ba, MgAl, Na, and Ca, and the metal silicate powder is dispersed in an amount of 5 to 40 wt% relative to the first solvent.

Meanwhile, the binder used in the preparation of the first dispersion solution is selected from polyvinyl alcohol, polyvinyl acetate, polyethylene, polyvinylbutylene, polypropylene, polyvinyl chloride, polyacrylic, polyacrylamide, guar gum, gelatin, and natural rubber. It is desirable to have more than one selected.

In addition, the first solvent includes one or more selected from water, ethanol, toluene, IPA, and acetone, and it is preferable that the first solvent is used in an amount of 70 to 220 wt% based on the weight of the metal silicate.

At this time, the additive used in the preparation of the first dispersion solution preferably includes a high boiling point solvent such as mineral spirits or xylene, and is preferably added in an amount of 0.5 to 10 wt% relative to the metal silicate. It varies depending on the additive, but in the case of organic additives, if the amount is more than 10wt%, it may be impossible to maintain the bead shape, cause high viscosity, and reduce workability.

Additionally, the second solution contains at least one selected from water, ethanol, toluene, IPA, and acetone, and is preferably contained in an amount of 5 to 40 wt% relative to the metal silicate.

The first dispersion solution and the second dispersion solution are mixed and stirred to prepare a mixed slurry, and then the mixed slurry is spray dried to form porous granules with micropores. At this time, spray drying uses a disk method, and the rotation speed of the disk is preferably adjusted within the range of 500 to 9000 rpm. If the rotation speed of the disk is less than 500 rpm, the effect of centrifugal force is not significant, and the size of the spherical particles becomes excessively large. On the other hand, when the rotation speed of the rotating disk exceeds 9000 rpm, the generation rate of spherical particles of 20㎛ or less increases, and these small spherical particles rather adhere to the surface of the heater or liquid hygroscopic body when manufacturing the heater or liquid hygroscopic body of the aerosol generating device. It has the disadvantage of blocking pores and reducing the specific surface area. Therefore, it is preferable that the rotation speed of the disk is adjusted within the range of 500 to 9000 rpm.

The disk on which the mixed slurry is sprayed rotates in a chamber maintaining a temperature of 220 to 400 ℃, and the Bernard Cell phenomenon is induced during the spray drying stage, causing surface defects (cracks) as shown in the photo in Figure 3, increasing the ratio of porous grains. Surface area can be increased. At this time, porous grains with micro pores have the advantage of being able to form micro pores without adding a separate pore-forming agent during the manufacturing process. The porous granules with micropores produced in this way can increase the specific surface area. Therefore, when a heater or a liquid hygroscopic body of an aerosol generating device is manufactured using porous granules with micropores formed using the Barnard cell phenomenon according to the embodiment, the amount of moisture that can absorb the liquid increases, and accordingly, the liquid can be vaporized and generated. It has the advantage of being able to increase the amount of atomization.

The porous grains 40a described above are porous three-dimensional (or spherical) particles with a plurality of grooves or pores (A) formed on the surface by causing surface defects (cracks), as can be seen in the scanning microscope photo of FIG. 3. , its specific surface area has been significantly increased. The porous grains 40a may be in the form of beads or spherical powder. The diameter or size of the porous grains 40a is a size that can secure a specific surface area to effectively absorb nicotine liquid, and preferably falls within the range of 10 ㎛ to 400 ㎛. The pores A formed on the surface or inside the porous grain 40a correspond to micro pores, and preferably have a diameter in the range of 20 ㎛ to 50 ㎛ to effectively accommodate liquid or nicotine liquid.

The pores between the plurality of porous grains 40a included in the ceramic moisture absorber 40 correspond to macro pores (indicated by B in FIG. 1) and range from 1 ㎛ to 140 ㎛, more preferably 1 ㎛. It falls in the range of ~20 ㎛. For example, the ceramic moisture absorber 40 may be an aggregate of a plurality of porous granules 40a charged into a predetermined space and containing liquid nicotine. At this time, the gaps formed between the plurality of porous grains 40a charged in the predetermined space may become macro pores B. Preferably, the porosity of the ceramic moisture absorber 40 is in the range of 40% to 70%. Here, porosity can be calculated as the total of macro pores (B) and micro pores (A).

Each of the porous grains 40a consists of a metal component and silicate. The metal component is an alkaline earth material such as aluminum, magnesium, and calcium. In particular, the material of the porous grains 40a 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 aluminum nitride. It is composed of one or more substances selected from the group containing.

The porous grains 40a preferably have hydrophilic properties in order to absorb or accommodate the nicotine liquid phase. Additionally, the porous grains 40a may additionally include fiber glass. These fiber glasses contain SiO2 in weight percent of more than 50%.

In the embodiment, the plurality of porous particles 40a have the function of absorbing or receiving nicotine liquid and/or are mounted on an aerosol generating device or cartridge to transport the nicotine liquid by capillary action. These moisture absorption and transfer functions can be performed more smoothly in the ceramic moisture absorber 40 composed of porous grains 40a containing micro-pores and macro-pores as in the embodiment. Due to these moisture absorption and transfer functions, when applied to an aerosol generating device or cartridge, a certain amount of nicotine liquid can be transferred when a user puffs, thereby generating a certain amount of mist.

In embodiments, the plurality of porous grains 40a included in the ceramic moisture absorber 40 may be blocked into a three-dimensional shape using a predetermined binder. Alternatively, without this blocking process, the porous particles 40a in the form of a plurality of beads or spherical powders can be applied as an atomizer to an aerosol generating device or cartridge by filling a predetermined space. The porous particles 40a can be charged into an aerosol generating device or cartridge in a state in which nicotine liquid has been absorbed, and arranged so that a heater can heat them. At this time, the shape of the heater may have various shapes such as a blade shape, a cylindrical shape, or a fin shape. Since the ceramic moisture absorber 40 does not have a specific shape, the shape or arrangement of the heater is free and the contact area between the heater and the ceramic moisture absorber 40 can be expanded. In addition, in the manufacturing step, when moisture is absorbed into the porous granules (40a), the nicotine liquid can be quickly and easily absorbed by dipping or mixing the plurality of porous granules (40a) in the liquefied nicotine liquid. there is.

Ultimately, nicotine liquid can be effectively accommodated in the micropores (A) and macropores (B) included in the ceramic moisture absorber 40, making manufacturing easier and increasing the efficiency of aerosol generation.

Depending on the embodiment, the ceramic hygroscopic body 40 may be wrapped by wrapping paper 41 to form a cylindrical ceramic hygroscopic rod. At this time, the wrapping paper 41 substantially defines the filling space in which the porous grains 40a are filled, and wraps at least the side of the ceramic moisture absorber 40 to prevent the porous grains 40a from falling off from the aggregate 40. It can be prevented. Preferably, the wrapping paper 41 is made of paper or membrane material with a waterproof coating to prevent nicotine liquid leakage. For example, the wrapping paper 41 may be provided as a laminate formed by attaching aluminum foil to paper, and the aluminum foil is wrapped in a cylindrical shape so that it contacts the ceramic moisture absorber 40. Accordingly, the aluminum foil can eliminate or minimize the possibility of nicotine liquid flowing out of the ceramic hygroscopic body 40 through the side of the ceramic hygroscopic body rod.

In order to prevent the porous grains 40a from being separated from the ceramic hygroscopic body 40, a predetermined binder may be applied, or when forming the ceramic hygroscopic body rod, the side of the ceramic hygroscopic body 40 is covered with wrapping paper 41. Not only that, it can cover the entire direction. However, in this case, it is preferable that the wrapping paper 41 has pores large enough to allow aerosol particles to pass through.

Referring to FIG. 2, for example, when a ceramic hygroscopic body 40 in the form of a ceramic hygroscopic rod is inserted into the aerosol generating device and its side, i.e. the part surrounded by the wrapping paper 41, is heated by a heater. , This heat heats the nicotine liquid contained in the porous grains 40a, and ultimately an aerosol can be generated. As shown in FIG. 2, when the ceramic hygroscopic body 40 is surrounded on its side by the wrapping paper 41 to form a ceramic hygroscopic body rod, the user breathes air from the bottom to the top, as shown by the arrow, through the act of suction. By creating a flow, the aerosol resulting from the nicotine liquid can be inhaled. When using such a ceramic moisture absorber 40, assuming an air flow from the bottom to the top, for convenience, the bottom side can be referred to as “upstream” and the top side can be referred to as “downstream.”

In an embodiment, the nicotine liquid may contain one or more materials that can be converted into an aerosol by heating, for example, flavoring, VG (vegetable glycerin), PG (propylene glycol), medicine, clove, etc. In particular, when the nicotine liquid contains VG (vegetable glycerin) and PG (propylene glycol), it is desirable because abundant aerosol and visual effects (smoke) can be generated.

In embodiments, the nicotine liquid may include tobacco extract. Tobacco extract may be naturally occurring pure nicotine or synthetic nicotine. For example, the tobacco extract may include, but is not limited to, freebase nicotine or nicotine salt.

In an embodiment, the nicotine liquid may include two or more types of nicotine salt. Nicotine salts can be formed by adding a suitable acid, including an organic or inorganic acid, to nicotine. The acid for forming a nicotine salt may be appropriately selected in consideration of the rate of absorption of nicotine in the blood, the temperature at which the heated smoking article 1 is heated, flavor or flavor, solubility, etc.

For example, acids for the formation of nicotine salts include benzoic acid, lactic acid, salicylic acid, lauric acid, sorbic acid, levulinic acid, pyruvic acid, formic acid, acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, caprylic acid, capric acid. , citric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, phenylacetic acid, tartaric acid, succinic acid, fumaric acid, gluconic acid, saccharic acid, malonic acid or malic acid or a single acid selected from the group consisting of the above. It may be a mixture of two or more acids selected from the group, but is not limited thereto.

In an embodiment, the gel-like aerosol medium contained in the aerosol medium rod 30 may be a material that can be converted into an aerosol by heating, such as flavoring, nicotine, VG (vegetable glycerin), PG (propylene glycol), medicine, clove. It may contain one or more of the following substances.

The gel-like aerosol medium is at least a mixture of glycerin and a thickener. For example, glycerin PG (Proplylene Glycol) or VG (Vegetable Glycerine), or a mixture of PG and VG is heated and stirred for 40 minutes to lower the viscosity and gelatinize it. Add 10 to 50% by weight of an additive, such as carrageenan, and stir until the additive dissolves in glycerin to obtain a mixture of glycerin and thickener. The mixture maintains a gel, semi-solid or solid state in a first temperature range that includes room temperature (e.g., a temperature range of less than 50° C.) and is heated to a second temperature range that is higher than the first temperature range (e.g., a temperature range of less than 50° C.). - In the temperature range of 100 ℃), it changes from a liquid to a sol phase and exists in the liquid phase, and when further heated, it becomes an aerosol in a third temperature range higher than the second temperature range (for example, a temperature range of 150 ℃ or more) It can be vaporized.

The gel-like aerosol medium may additionally include one or more of agar, thickener, starch powder, cellulose, carboxymethyl ether, natural food flavor, or fruit extract. In addition, the content of glycerin in the gel-like aerosol medium is preferably 50% by weight or more. Additionally, the mixture may additionally contain agar, in which case it serves advantageously to form a gel-like aerosol medium mixture. In addition, the gel-like aerosol medium mixture may include thickeners, starch powder, cellulose, and carboxymethyl ether as additives. Additionally, the gel-like aerosol medium mixture may additionally contain natural food flavorings or fruit extracts. In this case, it becomes possible to add various flavors to the user through the generated aerosol. In any case, it is preferable that the glycerin content in the gel-like aerosol medium mixture is 50% by weight or more, thereby minimizing the burnt taste in the generated aerosol. Additionally, the gel-like aerosol medium mixture may or may not contain nicotine.

For example, since the gel-like aerosol medium contains carrageenan, which is widely known to act as a thickener, phase changes can be expected depending on the temperature range as described above. The aerosol medium in a gel state in a first temperature range including room temperature may change into a liquid or sol state as the colloidal particles are disconnected in a second temperature range, and may be further heated to vaporize into an aerosol in a third temperature range. there is.

Depending on the embodiment, the gel-like aerosol medium may include 0.1 to 5% of a gelling agent, 5 to 100% of an aerosol generator including glycerin, 0.1 to 20% of an acidity regulator, and optionally 0.1 to 15% of a flavoring agent and additives. Or it may contain an active substance. In addition, depending on the embodiment, the gel-like aerosol medium may additionally include one or more of kappa carrageenan, iota carrageenan, agar, pectin, guar gum, calcium lactate, potassium chloride, glucose, starch powder, natural food additives, or fruit extracts or compounds. You can.

For example, flavoring agents include licorice, sucrose, fructose syrup, iso-sweeteners, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, and lemon. Oils may include orange oil, mint oil, cinnamon, caraway, cognac, jasmine, chamomile, menthol, cinnamon, ylang ylang, sage, spearmint, ginger, coriander or coffee.

The gel-like aerosol medium is vaporized and aerosolized in a temperature range (third temperature range) higher than the second temperature range, for example, about 150 to 300° C., the temperature at which the nicotine liquid absorbed in the ceramic hygroscopic body 40 is vaporized. If the range is different from the temperature range at which the gel-like aerosol medium is vaporized, the aerosol medium rod and the ceramic moisture absorber are heated independently in the aerosol generating device. In addition, depending on the embodiment, if the temperature range at which the gel-like aerosol medium is vaporized overlaps the temperature range at which the gel-like aerosol medium is vaporized, heating may be performed by targeting an intermediate temperature in the overlapping temperature range.

Figure 5 is a process concept diagram expressing a method of manufacturing a ceramic moisture absorber 40 according to an embodiment of the present invention.

Referring to Figure 5, first, as a step of preparing the nicotine liquid (M) in the container (K), the nicotine liquid (M) is placed in the container (K) ((a) of Figure 5). Next, the porous granules (40a) are introduced into the container (K) and soaked in the nicotine liquid (M) (FIG. 5 (b), (c)). For example, at this time, stirring may be performed to ensure that the porous grains 40a are well wetted. As a result, the porous grains 40a and the nicotine liquid M are mixed, and the nicotine liquid M may be moisture absorbed into the micropores and surface of the porous grains 40a. Next, for example, the remaining nicotine liquid M and the porous granules 40a can be separated using a fine strainer. Depending on the subsequent embodiment, a drying step of drying the nicotine liquid M that is not absorbed into the porous grains 40a but is still attached to the porous grains 40a due to phenomena such as surface tension may be additionally included. In this case, the nicotine liquid on the surface of the overabsorbed porous grains 40a is dried, thereby preventing the flow of liquid droplets that may occur later when combined with the ceramic moisture absorber 40.

The porous granules (40a) that absorb the nicotine liquid, prepared in this way, are wrapped by wrapping paper (41) in the form of a ceramic absorbent rod as shown in FIG. 2 or inserted into a predetermined space to form a ceramic absorbent (40). , can function as an atomizer that generates aerosol.

In the above exemplary manufacturing process, the surface of the porous particles 40a that absorb liquid nicotine may be coated through a predetermined coating process, and this coating blocks the micropores A in the porous particles 40a. , It prevents leakage that may occur at room temperature, and when heat is applied, it melts and vaporizes the nicotine liquid so that it can be inhaled by the user.

The present invention 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 invention as claimed in the claims. Of course, such changes are within the scope of the claims.

1: heated smoking article 10: filter rod
20: Cooling tube load 30: Aerosol medium load
40: Ceramic moisture absorber 40a: Porous grains
41: Wrapping paper 42: Porous grain leak-proof structure
50: wrapping paper

Claims (16)

Filter load;
a cooling tube rod stacked at the bottom of the filter rod and having a hollow shape in an upward and downward direction;
an aerosol medium rod stacked at the bottom of the cooling tube rod and containing a gel-like aerosol medium;
a ceramic moisture absorber laminated on the bottom of the aerosol media rod;
It includes a wrapping paper that wraps the filter rod, the cooling tube rod, the aerosol medium rod, and the ceramic moisture absorber to maintain a laminated structure,
The ceramic moisture absorber is nicotine liquid; And a plurality of porous grains with micropores formed on the surface or inside,
A heated smoking article, wherein macro pores are formed between the plurality of porous granules, and the nicotine liquid is accommodated in the micro pores and the macro pores. According to paragraph 1,
A heated smoking article, characterized in that the micro pores are formed through the Bernard Cell phenomenon. According to paragraph 1,
A heated smoking article, characterized in that the porous granules are in the form of beads or spherical powder. According to paragraph 1,
A heated smoking article, characterized in that the porous granules are composed of a metal component and silicate. According to paragraph 4,
A heated smoking article, characterized in that the metal component is an alkaline earth group. According to paragraph 4,
A heated smoking article, wherein the porous pellets include fiber glass. According to clause 6,
A heated smoking article, wherein the fiber glass comprises SiO2 in a weight percent of at least 50%. According to paragraph 1,
A heated smoking article, wherein the micropores are in the range of 20 ㎛ to 50 ㎛. According to paragraph 1,
A heated smoking article, characterized in that the macro pores range from 1 ㎛ to 20 ㎛. According to paragraph 1,
The porous granules are 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 heated smoking article characterized by comprising one or more substances. According to paragraph 1,
Heated smoking article, characterized in that the porous granules have a diameter of 10 ㎛ to 400 ㎛. According to paragraph 1,
The nicotine liquid is a material that can be converted into an aerosol by heating and is a heated smoking article characterized in that it contains one or more substances among flavoring, VG (vegetable glycerin), PG (propylene glycol), medicine, and cloves. According to paragraph 1,
Heated smoking article, wherein the nicotine liquid is mixed with the plurality of porous granules and absorbed into the micro-pores and macro-pores. According to paragraph 1,
A heated smoking article characterized in that the gel-like aerosol medium contains at least VG (vegetable glycerin) and PG (propylene glycol). According to any one of claims 1 to 14,
A heated smoking article comprising a separate wrapping paper wrapping the ceramic moisture absorber in a cylindrical shape. According to any one of claims 1 to 14,
A heated smoking article, characterized in that a porous particle leak prevention structure is provided at the bottom of the ceramic moisture absorber.