KR102655378B1 - Aerosol Generating Article - Google Patents

Abstract

Aerosol-generating articles include cigarette loads; a first filter segment extending in a downstream direction in contact with the tobacco rod and including a flavor emitting element that releases flavor when heat is transferred from the tobacco rod; a cooling structure extending in a downstream direction in contact with the first filter segment; and a second filter segment extending in a downstream direction in contact with the cooling structure; , wherein the first filter segment is comprised of reconstituted tobacco material including pulverized tobacco raw material, solvents and additives, and the first filter segment includes a tube to allow aerosol formed in the tobacco rod to pass through the interior of the first filter segment. It has a shape or channel shape.

Description

Aerosol Generating Article {Aerosol Generating Article}

Embodiments relate to an aerosol-generating article, and more particularly to an aerosol-generating article comprising a tobacco rod, a first filter segment comprising a flavor-releasing element, a cooling structure, and a second filter segment.

In recent years, there has been a growing demand for alternative methods that overcome the shortcomings of common aerosol-generating articles. For example, there is an increasing demand for methods in which aerosols are generated by heating the aerosol-generating material in the aerosol-generating article, rather than by burning the aerosol-generating article. Accordingly, research on heated aerosol-generating articles or heated aerosol-generating devices is actively underway.

In the prior art, an aerosol-generating article is provided with a tobacco rod, a first filter segment, a cooling structure and a second filter segment, wherein the first filter segment located downstream of the tobacco rod is shaped like a hollow tube comprising cellulose acetate. It can be manufactured with

When a user heats the aerosol-generating article for smoking, heat is transferred from the tobacco rod to the first filter segment. The first filter segment may be positioned downstream of the tobacco rod to resist downstream movement of the tobacco rod and transfer heat transferred from the tobacco rod to the cooling structure.

However, the first filter segment containing cellulose acetate lacks heat resistance and may be broken or melted by heat transferred from the tobacco rod. As a result, a problem may arise in which support for the tobacco rod becomes impossible.

One or more embodiments provide an aerosol-generating article comprising a tobacco rod, a first filter segment including a flavor-releasing element, a cooling structure, and a second filter segment. The technical challenges that this embodiment aims to achieve are not limited to the technical challenges described above, and other technical challenges can be inferred from the following embodiments.

As a technical means for achieving the above-described technical problem, an aerosol-generating article according to one embodiment includes a tobacco rod; a first filter segment extending in a downstream direction in contact with the tobacco rod and including a flavor emitting element that releases flavor when heat is transferred from the tobacco rod; a cooling structure extending in a downstream direction in contact with the first filter segment; and a second filter segment extending in a downstream direction in contact with the cooling structure, wherein the first filter segment is comprised of reconstituted tobacco material comprising shredded tobacco raw material, solvents and additives, and the first filter segment is positioned in the tobacco rod. It may have a hollow shape or a channel shape so that the formed aerosol can pass through the interior of the first filter segment.

The first filter segment may release flavor when exposed to temperatures above 70°C.

The first filter segment may include at least one of a flavoring agent, a humectant, and an acetate compound.

The length of the inner diameter of the first filter segment may be 45% to 50% of the length of the outer diameter of the first filter segment.

Figure 1 is a diagram showing an example in which an aerosol-generating article is inserted into a holder.
Figure 2 is a configuration diagram showing an example of an aerosol-generating article.

The terms used in the embodiments are general terms that are currently widely used as much as possible while considering the function in the present invention, but this may vary depending on the intention or precedent of a person skilled in the art, the emergence of new technology, etc. In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the relevant invention. Therefore, the terms used in the present invention should be defined based on the meaning of the term and the overall content of the present invention, rather than simply the name of the term.

When a part in the entire specification is said to “include” a certain element, this means that it does not exclude other elements but may further include other elements, unless specifically stated to the contrary.

In addition, throughout the specification, “upstream” or “upstream direction” means a direction away from the mouth of the user smoking the aerosol-generating article (2), and “downstream” or “downstream direction” refers to a direction away from the mouth of the user smoking the aerosol-generating article (2). It refers to the direction approaching from the user's corner. For example, referring to Figure 2, in the aerosol-generating article 2, the tobacco rod 210 is located upstream or in an upstream direction of the first filter segment 221.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Figure 1 is a diagram showing an example in which an aerosol-generating article is inserted into a holder.

Referring to Figure 1, an aerosol-generating article 2 may be inserted into the holder 1. When the aerosol-generating article 2 is inserted, the heater 130 is located inside the aerosol-generating article 2. Accordingly, the aerosol-generating material of the aerosol-generating article 2 is heated by the heated heater 130, and thus an aerosol is generated.

The aerosol-generating article 2 may have a shape similar to a typical combustion-type aerosol-generating article. For example, the aerosol-generating article 2 may be divided into a first part 210 containing an aerosol-generating material and a second part 220 containing a filter, etc.

The entire first part 210 may be inserted into the holder 1, and the second part 220 may be exposed to the outside. Alternatively, only part of the first part 210 may be inserted into the holder 1, or parts of the first part 210 and the second part 220 may be inserted.

The user can inhale the aerosol while holding the second part 220 with his or her mouth. At this time, the aerosol is generated when external air passes through the first part 210, and the generated aerosol passes through the second part 220 and is delivered to the user's mouth.

External air may be introduced through at least one air passage formed in the holder 1. Alternatively, outside air may be introduced through at least one hole formed on the surface of the aerosol-generating article 2.

Figure 2 is a configuration diagram showing an example of an aerosol-generating article.

Referring to Figure 2, the aerosol-generating article 2 includes a tobacco rod 210, a first filter segment 221, a cooling structure 222, and a second filter segment 223. The first part, described above with reference to FIG. 1 , includes a tobacco rod 210 and the second part includes a first filter segment 221 , a cooling structure 222 and a second filter segment 223 .

Referring to Figure 2, the aerosol-generating article 2 may be packaged by wrappers 231, 232, 233, 234, 235, and 236. For example, the tobacco rod 210 is wrapped by a first wrapper 231 and the first filter segment 221 is wrapped by a second wrapper 232. Additionally, the cooling structure 222 is wrapped by the third wrapper 233, and the second filter segment 223 is wrapped by the fourth wrapper 234.

The fifth wrapper 235 may be surrounded around the first wrapper 231, the second wrapper 232, and the third wrapper 233. In other words, the tobacco rod 210, first filter segment 221 and cooling structure 222 of the aerosol-generating article 2 may be further wrapped by the fifth wrapper 235. Additionally, the sixth wrapper 236 may surround at least a portion of the fifth wrapper 235 and the outside of the fourth wrapper 234. In other words, at least a portion of the cooling structure 222 of the aerosol-generating article 2 and the second filter segment 223 may be further wrapped by the sixth wrapper 236 .

The first wrapper 231, the second wrapper 232, the fifth wrapper 235, and the sixth wrapper 236 may be made of general wrapping paper. For example, the first wrapper 231, the second wrapper 232, the fifth wrapper 235, and the sixth wrapper 236 may be porous wrappers or non-porous wrappers. For example, the thickness of the first wrapper 231 may be about 61 μm and the porosity may be about 15 CU, and the thickness of the second wrapper 232 may be about 63 μm and the porosity may be about 15 CU, but are not limited thereto. . Additionally, the thickness of the fifth wrapper 236 may be about 66 μm and the porosity may be about 10 CU, and the thickness of the sixth wrapper 236 may be about 66 μm and the porosity may be about 17 CU, but are not limited thereto.

Additionally, aluminum foil may be further included on the inner surface of the first wrapper 231 and/or the second wrapper 232.

The third wrapper 233 and the fourth wrapper 234 may be made of hard wrapping paper. For example, the third wrapper 233 may have a thickness of about 158 μm and a porosity of about 33 CU, and the fourth wrapper 234 may have a thickness of about 155 μm and a porosity of about 46 CU, but are not limited thereto. .

The fifth wrapper 235 and the sixth wrapper 236 may be internally added with a predetermined material. Here, an example of a certain material may be silicon, but is not limited thereto. For example, silicone has properties such as heat resistance with little change depending on temperature, oxidation resistance without oxidation, resistance to various chemicals, water repellency, or electrical insulation. However, even if it is not silicon, any material having the above-mentioned characteristics can be applied (or coated) to the fifth wrapper 235 and the sixth wrapper 236 without limitation.

The fifth wrapper 235 and the sixth wrapper 236 can prevent the aerosol-generating article 2 from burning. For example, when the tobacco rod 210 is heated by the heater 130, there is a possibility that the aerosol-generating article 2 may combust. Specifically, when the temperature rises above the ignition point of any one of the materials included in the tobacco rod 210, the aerosol-generating article 2 may combust. Even in this case, since the fifth wrapper 235 and the sixth wrapper 236 contain non-combustible materials, combustion of the aerosol-generating article 2 can be prevented.

Additionally, the fifth wrapper 235 can prevent the holder 1 from being contaminated by substances generated from the aerosol-generating article 2. Liquid substances may be generated within the aerosol-generating article 2 by the user's puff. For example, liquid substances (eg, moisture, etc.) may be generated as the aerosol generated from the aerosol-generating article 2 is cooled by external air. As the fifth wrapper 235 wraps the tobacco rod 210 and/or the first filter segment 221, liquid substances generated within the aerosol-generating article 2 leak to the outside of the aerosol-generating article 2. Exit can be prevented. Accordingly, the inside of the holder 1 can be prevented from being contaminated by liquid substances generated from the aerosol-generating article 2.

The diameter of the aerosol-generating article 2 may be within the range of 5 mm to 9 mm, and the length may be about 48 mm, but is not limited thereto. For example, the length of the tobacco rod 210 is about 12 mm, the length of the first filter segment 221 is about 10 mm, the length of the cooling structure 222 is about 14 mm, and the length of the second filter segment 223 is about 14 mm. It may be 12mm, but is not limited to this.

The structure of the aerosol-generating article 2 shown in FIG. 2 is only an example, and some components may be omitted. For example, the aerosol-generating article 2 may not include one or more of the first filter segment 221, the cooling structure 222, and the second filter segment 223.

Tobacco load 210 contains aerosol generating material. For example, the aerosol-generating material may include at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol.

Additionally, tobacco rod 210 may contain other additives such as flavoring agents, humectants, and/or organic acids. For example, flavoring agents include licorice, sucrose, fructose syrup, isosweet, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose oil, It may contain vanilla, lemon oil, orange oil, mint oil, cinnamon, caraway, cognac, jasmine, chamomile, menthol, cinnamon, ylang ylang, sage, spearmint, ginger, coriander or coffee. Additionally, the humectant may include glycerin or propylene glycol.

As an example, the tobacco rod 210 may be filled with a reconstituent tobacco sheet.

As another example, tobacco rod 210 may be filled with cut candles. Here, tobacco cut fillers can be produced by chopping leaf sheets into small pieces.

As another example, the tobacco rod 310 may be filled with a plurality of tobacco strands in which the leaf sheets are cut into pieces. For example, the tobacco rod 310 may be formed by combining a plurality of tobacco strands in the same direction (parallel) or randomly.

For example, plate-shaped leaf sheets can be manufactured by the following process. First, the tobacco raw materials are pulverized into aerosol-generating substances (e.g., glycerin, propylene glycol, etc.), flavoring agents, binders (e.g., guar gum, xanthan gum, carboxymethyl cellulose (CMC), etc.), and water. After making a slurry mixed with the slurry, a plate-like leaf sheet is formed using the slurry. When making a slurry, natural pulp or cellulose may be added, and one or more binders may be mixed and used. On the other hand, tobacco strands can be produced by cutting or shredding the dried leaf sheet.

The tobacco raw material may be tobacco leaf pieces, tobacco stems and/or tobacco fines generated during tobacco processing. Additionally, leaf sheets may contain other additives such as wood cellulose fibers.

5% to 40% of the aerosol-generating material may be added to the slurry, and 2% to 35% of the aerosol-generating material may remain in the leaflet sheet. Preferably, 5% to 30% of the aerosol-generating material may remain in the leaflet sheet.

Additionally, before the tobacco rod 210 is packaged by the first wrapper 231, a flavoring liquid such as menthol or a humectant may be added by spraying it to the center of the tobacco rod 210.

The first filter segment may be comprised of reconstituted tobacco material containing pulverized tobacco raw material, solvents and additives, and may extend in a downstream direction in contact with the tobacco rod 210 and include a flavor release element that releases flavor when heat is transferred. may include. The first filter segment 221 may be manufactured identically or similarly to the tobacco rod 210.

The first filter segment 221 may include a flavor emitting element and emit flavor by heat transferred from the tobacco rod 210. The first filter segment 221 may release flavor when exposed to temperatures above 70°C. Flavor elements include, for example, licorice, sucrose, fructose syrup, isosweet, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose oil, May contain vanilla, lemon oil, orange oil, mint oil, cinnamon, caraway, cognac, jasmine, chamomile, menthol, spearmint, sage, ginger, coriander or coffee.

The first filter segment 221 may be a tube-shaped or channel-shaped structure including a hollow interior. The length of the first filter segment 221 may be an appropriate length within the range of 4 mm to 30 mm, but is not limited thereto. Preferably, the length of the first filter segment 221 may be 10 mm, but is not limited thereto.

The diameter of the hollow included in the first filter segment 221 may be an appropriate diameter within the range of 2 mm to 4.5 mm, but is not limited thereto.

The hollow diameter of the first filter segment 221 may be 10% to 90% of the diameter of the first filter segment 221, preferably 30% to 70%, more preferably 45% to 50%. You can.

The first filter segment 221 may include at least one of a flavoring agent, a humectant, and an acetate compound. Additionally, the first filter segment 221 may be manufactured by inserting a structure such as a film or tube made of the same or different material into the interior (eg, hollow).

The first filter segment 221 may be manufactured using cellulose acetate. Accordingly, when the heater 130 is inserted, the internal material of the tobacco rod 210 can be prevented from being pushed back, and the cooling effect of the aerosol can be generated.

The first filter segment 221 may also include reconstituted tobacco material including shredded tobacco raw material, solvents, and additives. At this time, the first filter segment 221 containing reconstituted tobacco material may have a tube shape or a channel shape.

The cooling structure 222 cools the aerosol generated by the heater 130 heating the tobacco rod 210. Therefore, the user can inhale the aerosol cooled to an appropriate temperature.

The length or diameter of the cooling structure 222 may be determined in various ways depending on the shape of the aerosol-generating article 2. For example, the length of the cooling structure 222 may be appropriately adopted within the range of 7 mm to 20 mm. Preferably, the length of the cooling structure 222 may be about 14 mm, but is not limited thereto.

Cooling structure 222 may be manufactured by weaving polymer fibers. In this case, the flavoring liquid may be applied to fibers made of polymer. Alternatively, the cooling structure 222 may be manufactured by weaving separate fibers coated with a flavoring liquid and fibers made of polymer together.

Alternatively, the cooling structure 222 may be formed by a crimped polymer sheet. The polymer is made of a material selected from the group consisting of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polylactic acid (PLA), cellulose acetate (CA), and aluminum foil. It can be.

As the cooling structure 222 is formed by woven polymer fibers or crimped polymer sheets, the cooling structure 222 may include one or a plurality of longitudinally extending channels. Here, the channel refers to a passage through which a gas (eg, air or aerosol) passes.

For example, cooling structure 222 comprised of crimped polymer sheets may be formed from a material having a thickness between about 5 μm and about 500 μm, for example between about 10 μm and about 250 μm. Additionally, the total surface area of cooling structure 222 may be between about 300 mm ² /mm and about 1000 mm ² /mm. Additionally, the aerosol cooling element can be formed from a material having a specific surface area between about 10 mm ² /mg and about 100 mm ² /mg.

Meanwhile, the cooling structure 222 may include threads containing volatile flavor components. Here, the volatile flavor component may be, but is not limited to, menthol. For example, the threads may be filled with a sufficient amount of menthol to provide the cooling structure 222 with more than 1.5 mg of menthol.

The second filter segment 223 may be a cellulose acetate filter. The length of the second filter segment 223 may be appropriately adopted within the range of 4 mm to 20 mm. For example, the length of the second filter segment 223 may be about 12 mm, but is not limited thereto.

In the process of manufacturing the second filter segment 223, it may be manufactured to generate flavor by spraying a flavoring liquid on the second filter segment 223. Alternatively, a separate fiber coated with a flavoring liquid may be inserted into the second filter segment 223. The aerosol generated in the cigarette rod 210 is cooled as it passes through the cooling structure 222, and the cooled aerosol is delivered to the user through the second filter segment 223. Therefore, when a flavoring element is added to the second filter segment 223, the sustainability of the flavor delivered to the user can be improved.

Those skilled in the art related to the present embodiment will understand that the above-described substrate can be implemented in a modified form without departing from the essential characteristics. Therefore, the disclosed methods should be considered from an explanatory rather than a restrictive perspective. The scope of the present invention is indicated in the claims rather than the foregoing description, and all differences within the equivalent scope should be construed as being included in the present invention.

Claims (3)

tobacco load;
a first filter segment extending in a downstream direction in contact with the tobacco rod and including a flavor emitting element that emits flavor when heat is transferred from the tobacco rod;
a cooling structure extending in a downstream direction in contact with the first filter segment; and
a second filter segment extending in a downstream direction in contact with the cooling structure; Provided with
The first filter segment is comprised of reconstituted tobacco material comprising ground tobacco raw material, solvents and additives, and has a tube shape or channel shape to allow aerosol formed in the tobacco rod to pass through the interior of the first filter segment. ,
The length of the inner diameter of the first filter segment is 45% to 50% of the length of the outer diameter of the first filter segment,
An aerosol-generating article, wherein the cooling structure comprises a crimped polymer sheet having a thickness between 5 μm and 500 μm. According to claim 1,
An aerosol-generating article, wherein the first filter segment releases flavor when exposed to temperatures above 70°C. According to claim 1,
An aerosol-generating article, wherein the first filter segment includes at least one of a flavorant, a humectant, and an acetate compound.