KR102480476B1 - Aerosol generating article and system comprising capsule - Google Patents

Abstract

The present disclosure relates to aerosol-generating articles and systems comprising capsules.

Description

Aerosol-generating articles and systems comprising capsules {AEROSOL GENERATING ARTICLE AND SYSTEM COMPRISING CAPSULE}

It relates to aerosol-generating articles and systems comprising capsules.

In recent years there has been a growing demand for alternative methods that overcome the disadvantages of common aerosol-generating articles. For example, there is an increasing demand for a method of generating an aerosol by heating an aerosol-generating material in an aerosol-generating article, rather than a method of generating an aerosol by burning the aerosol-generating article. Accordingly, research on heated aerosol-generating articles and heated aerosol-generating devices is being actively conducted.

A heated aerosol-generating article has the advantage of being able to have a unique tobacco taste different from that of a combustion-type aerosol-generating article, and having a sufficient amount of atomization. However, in the case of some heated aerosol-generating articles, it is difficult to continuously release aerosol or nicotine over time.

Aerosol-generating articles and systems according to embodiments can solve the above-mentioned problems of the prior art.

However, the technical problem is not limited to the above, and other technical problems may be inferred from the following examples.

A first aspect of the present disclosure is an aerosol-generating article comprising: a first portion comprising a first capsule; a second portion cooling the airflow passing through the first portion; and a third portion comprising a filter material, wherein the first portion, the second portion, and the third portion are sequentially arranged in a longitudinal direction of the aerosol-generating article, wherein the first capsule comprises: , a first core region; and a first shell region surrounding the first core region, wherein the first core region contains nicotine, and the first shell region comprises a first thermo-responsive polymer. It is possible to provide an aerosol-generating article comprising a polymer).

In an embodiment, the first temperature-sensitive polymer may include at least one of an ester group, an alcohol group, and an amide group.

In an embodiment, the first temperature-sensitive polymer is pNIPAAm (poly (N-isopropylacrylamide)), pDEAM (poly (N, N-diethylacrylamide), pNEMAM (poly (N-ethylmethacrylamide), pMVE (poly (methyl vinyl ether) ), pEOVE (poly (2-ethoxyethyl vinyl ether), pNVCa (poly (N-vinylcaprolactam), pNVIBAM (poly (N-vinylisobutyramide), or pNVBAM (poly (N-vinyl-n-butyramide)).

In an embodiment, the first temperature-sensitive polymer may have a lower critical solution temperature (LCST) in the range of 10 °C to 80 °C.

In an embodiment, the first core region may further include a moisturizer.

In an embodiment, the first portion further includes a second capsule, and the second capsule includes: a second core region; and a second shell region surrounding the second core region, wherein the second core region contains nicotine, and the second shell region may include a second temperature-sensitive polymer.

In an embodiment, the first temperature-sensitive polymer may have a critical melting temperature in the range of 10 °C to 40 °C, and the second temperature-sensitive polymer may have a critical melting temperature in the range of 30 °C to 80 °C.

In an embodiment, the first part may have a length of 16 to 28 mm, the second part may have a length of 12 to 14 mm, and the third part may have a length of 12 to 14 mm.

In an embodiment, the first part may further include a second capsule and a third capsule.

A second aspect of the present disclosure includes an aerosol-generating article according to the first aspect of the present disclosure; and an aerosol-generating device comprising an accommodation space accommodating the aerosol-generating article and a heating element for heating the aerosol-generating article.

In an embodiment, the aerosol generating device may heat at least a portion of the first portion.

In an embodiment, when the aerosol-generating device is activated, the heating element may be heated along a temperature profile that rises from 35°C to 80°C.

A third aspect of the present disclosure is a core region; and a shell region surrounding the core region, wherein the core region contains nicotine, and the shell region contains a temperature-sensitive polymer.

In an embodiment, the temperature-sensitive nicotine capsule may have a granule, sheet, or particle shape.

The means for solving the problem is not limited to the above, and may include all matters that can be inferred by a person skilled in the art throughout this specification.

According to the embodiment, the aerosol generation amount of the aerosol-generating article can be controlled by using the temperature-sensitive polymer, and nicotine can be continuously released according to the temperature at which the aerosol-generating article is heated.

Effects of the present disclosure are not limited to those described above, and may include all effects inferred from configurations to be described later.

1 is a view showing a case where an aerosol-generating article is inserted into an aerosol-generating device according to an embodiment.
2 is a view showing a case where an aerosol-generating article is inserted into an aerosol-generating device according to another embodiment.
3 is a view showing a case where an aerosol-generating article is inserted into an aerosol-generating device according to another embodiment.
4 is a diagram schematically showing the configuration of an aerosol-generating article according to an embodiment.
5A is a diagram showing the configuration of a first capsule according to an embodiment.
5B is a diagram showing the configuration of a first capsule according to another embodiment.
6 is a diagram schematically illustrating the configuration of an aerosol-generating article according to an embodiment.
7 is a diagram schematically showing the configuration of an aerosol-generating article according to another embodiment.
8 is a view showing a case where an aerosol-generating article according to an embodiment is inserted into an aerosol-generating device.
9A is a diagram illustrating a principle in which a temperature sensitive nicotine capsule according to an embodiment releases nicotine.
9B is a diagram showing an exemplary temperature profile at which an aerosol-generating device according to an embodiment heats an aerosol-generating article according to an embodiment.

The terms used in the embodiments have been selected from general terms that are currently widely used as much as possible while considering the functions in the present disclosure, but they may vary depending on the intention or precedent of a person skilled in the art, the emergence of new technologies, and the like. In addition, in a specific case, there is also a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the invention. Therefore, terms used in the present disclosure should be defined based on the meaning of the term and the general content of the present disclosure, not simply the name of the term.

When it is said that a certain part "includes" a certain component throughout the specification, it means that it may further include other components without excluding other components unless otherwise stated. In addition, terms such as “…unit” and “…module” described in the specification mean a unit that processes at least one function or operation, which may be implemented as hardware or software or a combination of hardware and software.

Hereinafter, with reference to the accompanying drawings, embodiments of the present disclosure will be described in detail so that those skilled in the art can easily carry out the present disclosure. However, the present disclosure may be embodied in many different forms and is not limited to the embodiments described herein.

Throughout the specification, “A and/or B” refers to at least one of A and B.

Throughout the specification, "on" means that a certain member is disposed on one side of another member, and includes both cases in which a certain member is disposed in contact with or without contact with another member.

Throughout the specification, a "core-shell structure" means a structure in which a core region is disposed in the center and a shell region surrounds it. Here, the shell region may be disposed to surround all or part of the core region.

Throughout the specification, "polymer" means a compound in which a plurality of unit structures are repeated.

Throughout the specification, "temperature-sensitive polymer" means a compound whose structure changes in response to external temperature and has a plurality of repeating unit structures.

Throughout the specification, "lower critical solution temperature (LCST)" refers to a specific temperature at which a polymer begins to undergo a sol-gel phase transition or volume phase transition.

Throughout the specification, “temperature profile” means a schematic representation of temperature change over time. For example, the temperature profile at which the heating element of the aerosol-generating device operates can be graphed as temperature versus time.

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

1 to 3 are views illustrating examples in which an aerosol generating article 20000 according to an embodiment is inserted into an aerosol generating device 10000 according to an embodiment.

Referring to FIG. 1 , an aerosol generating device 10000 includes a battery 11000, a controller 12000, and a heater 13000. Referring to FIGS. 2 and 3 , the aerosol generating device 10000 further includes a vaporizer 14000. In addition, the aerosol generating article 20000 may be inserted into the inner space of the aerosol generating device 10000.

Components related to the present embodiment are shown in the aerosol generating device 10000 shown in FIGS. 1 to 3 . Therefore, those skilled in the art can understand that other general-purpose components other than those shown in FIGS. 1 to 3 may be further included in the aerosol generating device 10000. .

In addition, although FIGS. 2 and 3 show that the aerosol generating device 10000 includes the heater 13000, the heater 13000 may be omitted if necessary.

1 shows a battery 11000, a controller 12000, and a heater 13000 arranged in a line. In addition, FIG. 2 shows a battery 11000, a controller 12000, a vaporizer 14000, and a heater 13000 arranged in a line. In addition, in FIG. 3, the vaporizer 14000 and the heater 13000 are shown as being arranged in parallel. However, the internal structure of the aerosol generating device 10000 is not limited to those shown in FIGS. 1 to 3 . In other words, according to the design of the aerosol generating device 10000, the arrangement of the battery 11000, the controller 12000, the heater 13000, and the vaporizer 14000 may be changed.

When the aerosol-generating article 20000 is inserted into the aerosol-generating device 10000, the aerosol-generating device 10000 operates the heater 13000 and/or the vaporizer 14000 so that the aerosol-generating article 20000 and/or steam An aerosol can be generated from the firearm 14000. The aerosol generated by the heater 13000 and/or the vaporizer 14000 passes through the aerosol-generating article 20000 and is delivered to the user.

If necessary, the aerosol generating device 10000 may heat the heater 13000 even when the aerosol generating article 20000 is not inserted into the aerosol generating device 10000 .

The battery 11000 supplies power used for the operation of the aerosol generating device 10000. For example, the battery 11000 may supply power so that the heater 13000 or the vaporizer 14000 may be heated, and may supply power necessary for the controller 12000 to operate. In addition, the battery 11000 may supply power necessary for the display, sensor, motor, etc. installed in the aerosol generating device 10000 to operate.

The controller 12000 controls the overall operation of the aerosol generating device 10000. Specifically, the controller 12000 controls the operation of the battery 11000, the heater 13000, and the vaporizer 14000 as well as other components included in the aerosol generating device 10000. In addition, the controller 12000 may determine whether the aerosol generating device 10000 is in an operable state by checking the state of each component of the aerosol generating device 10000.

The controller 12000 includes at least one processor. The processor may be implemented as an array of a plurality of logic gates, or may be implemented as a combination of a general-purpose microprocessor and a memory in which programs executable by the microprocessor are stored. Also, those having ordinary knowledge in the art to which this embodiment belongs can understand that it may be implemented in other types of hardware.

The heater 13000 may be heated by power supplied from the battery 11000 . For example, when an aerosol-generating article is inserted into the aerosol-generating device 10000, the heater 13000 may be positioned outside the aerosol-generating article. Thus, the heated heater 13000 can raise the temperature of the aerosol-generating material within the aerosol-generating article.

The heater 13000 may be an electrical resistive heater. For example, the heater 13000 may include an electrically conductive track, and the heater 13000 may be heated as current flows through the electrically conductive track. However, the heater 13000 is not limited to the above example, and any heater 13000 may be heated to a desired temperature without limitation. Here, the desired temperature may be previously set in the aerosol generating device 10000 or may be set to a desired temperature by the user.

Meanwhile, as another example, the heater 13000 may be an induction heating type heater. Specifically, the heater 13000 may include an electrically conductive coil for heating an aerosol-generating article by an induction heating method, and the aerosol-generating article may include a susceptor capable of being heated by the induction heating type heater.

For example, the heater 13000 may include a tubular heating element, a plate heating element, a needle heating element, or a rod-shaped heating element, and depending on the shape of the heating element, the inside or outside of the aerosol generating article 20000 Can be heated outside.

In addition, a plurality of heaters 13000 may be disposed in the aerosol generating device 10000. At this time, the plurality of heaters 13000 may be disposed to be inserted inside the aerosol-generating article 20000 or may be disposed outside the aerosol-generating article 20000. Also, some of the plurality of heaters 13000 may be disposed to be inserted into the aerosol-generating article 20000, and others may be disposed outside the aerosol-generating article 20000. In addition, the shape of the heater 13000 is not limited to the shape shown in FIGS. 1 to 3 and may be manufactured in various shapes.

The vaporizer 14000 may generate an aerosol by heating the liquid composition, and the generated aerosol may pass through the aerosol-generating article 20000 and be delivered to a user. In other words, the aerosol generated by the vaporizer 14000 can move along the air flow path of the aerosol generating device 10000, and the air flow path allows the aerosol generated by the vaporizer 14000 to pass through the aerosol-generating article to the user. It can be configured so that it can be delivered to.

For example, the vaporizer 14000 may include, but is not limited to, a liquid reservoir, a liquid delivery means, and a heating element. For example, the liquid reservoir, liquid delivery means and heating element may be included in the aerosol-generating device 10000 as independent modules.

The liquid reservoir may store a liquid composition. For example, the liquid composition may be a liquid containing a tobacco-containing material including a volatile tobacco flavor component, or may be a liquid containing a non-tobacco material. The liquid storage unit may be manufactured to be detachable from/attached to/from the vaporizer 14000, or may be manufactured integrally with the vaporizer 14000.

For example, liquid compositions may include water, solvents, ethanol, plant extracts, fragrances, flavors, or vitamin mixtures. Fragrance may include menthol, peppermint, spearmint oil, various fruit flavor components, etc., but is not limited thereto. Flavoring agents can include ingredients that can provide a variety of flavors or flavors to the user. The vitamin mixture may be a mixture of at least one of vitamin A, vitamin B, vitamin C, and vitamin E, but is not limited thereto. Liquid compositions may also contain aerosol formers such as glycerin and propylene glycol.

The liquid delivery means may deliver the liquid composition of the liquid reservoir to the heating element. For example, the liquid delivery means may be a wick such as cotton fiber, ceramic fiber, glass fiber, or porous ceramic, but is not limited thereto.

The heating element is an element for heating the liquid composition delivered by the liquid delivery means. For example, the heating element may be a metal heating wire, a metal heating plate, or a ceramic heater, but is not limited thereto. In addition, the heating element may be composed of a conductive filament such as nichrome wire, and may be disposed in a structure wound around the liquid delivery means. The heating element may be heated by supplying current, and may transfer heat to the liquid composition in contact with the heating element to heat the liquid composition. As a result, an aerosol may be generated.

For example, the vaporizer 14000 may be referred to as a cartomizer or an atomizer, but is not limited thereto.

Meanwhile, the aerosol generating device 10000 may further include general-purpose components other than the battery 11000, the controller 12000, the heater 13000, and the vaporizer 14000. For example, the aerosol generating device 10000 may include a display capable of outputting visual information and/or a motor for outputting tactile information. In addition, the aerosol generating device 10000 may include at least one sensor (a puff detection sensor, a temperature detection sensor, an aerosol generating article insertion detection sensor, etc.). In addition, the aerosol generating device 10000 may be manufactured in a structure in which external air may flow in or internal gas may flow out even when the aerosol generating article 20000 is inserted.

Although not shown in FIGS. 1 to 3 , the aerosol generating device 10000 may constitute a system together with a separate cradle. For example, the cradle may be used to charge the battery 11000 of the aerosol generating device 10000. Alternatively, the heater 13000 may be heated in a state in which the cradle and the aerosol generating device 10000 are coupled.

As an example, external air may be introduced through at least one air passage formed in the aerosol generating device 10000. For example, the opening and closing of the air passage formed in the aerosol generating device 10000 and/or the size of the air passage may be adjusted by the user. Accordingly, the amount of smoke and the feeling of smoking can be adjusted by the user. As another example, outside air may be introduced into the aerosol-generating article 20000 through at least one hole formed on a surface of the aerosol-generating article 20000.

4 is a diagram schematically showing the configuration of an aerosol-generating article 100 according to an embodiment.

A first aspect of the present disclosure relates to a first portion (110) comprising a first capsule (150), a second portion (120) for cooling airflow passing through the first portion (110), and a filter material. comprising a third portion (130), wherein the first portion (110), the second portion (120), and the third portion (130) are sequentially arranged relative to the longitudinal direction of the aerosol-generating article (100). A generated article 100 may be provided.

The first part 110 may include a first capsule 150 . Although only the first capsule 150 is shown in FIG. 4 , a plurality of second capsules, third capsules, and fourth capsules of different types may be included as needed.

The first capsule 150 includes a first core region (not shown) and a first shell region (not shown) surrounding the first core region, the first core region contains nicotine, and the first shell The region may include a first temperature-sensitive polymer (not shown). The first capsule 150 may be disposed downstream, centrally, or upstream of the first portion 110 .

The first capsule 150 will be described in more detail with reference to FIG. 5 below.

The second portion 120 may include a cooling material that cools airflow passing through the first portion 110 . The second part 120 may be made of a polymer material or a biodegradable polymer material, and may have a cooling function. For example, the second part 120 may be made of only pure polylactic acid (PLA), but is not limited thereto. Alternatively, the second part 120 may be made of a cellulose acetate filter having a plurality of holes. However, the second part 120 is not limited to the above-described examples, and a material that functions to cool the aerosol may correspond thereto without limitation. Also, for example, the second part 120 may be a hollow tube filter or a branch tube filter.

The third part 130 may be a cellulose acetate filter. Meanwhile, the shape of the third portion 130 is not limited. For example, the third part 130 may be a cylindrical rod or a tubular rod having a hollow inside. Also, the third part 130 may be a recess type rod. If the third part 130 is composed of a plurality of segments, at least one of the plurality of segments may be manufactured in a different shape.

The third portion 130 may be manufactured to generate flavor. As an example, flavoring liquid may be sprayed onto the third portion 130, or a separate fiber coated with flavoring liquid may be inserted into the third portion 130.

In an embodiment, the first portion 110 has a length of about 16 to about 28 mm, the second portion 120 has a length of about 12 to about 14 mm, and the third portion 130 has a length of about 12 mm. to about 14 mm in length. However, the present disclosure is not necessarily limited to the above.

The aerosol-generating article 100 may include a wrapper 140 surrounding at least a portion of the first portion 110 to the third portion 130 . The wrapper 140 may be located on the outermost side of the aerosol-generating article 100, and at least one hole through which external air may flow or internal gas may flow out may be formed in the wrapper 140. The wrapper 140 may be a single wrapper or may be a combination of a plurality of wrappers.

5A is a diagram showing the configuration of the first capsule 200 according to one embodiment, and FIG. 5B is a diagram showing the configuration of the first capsule 300 according to another embodiment.

In an embodiment, the first capsule 200 of FIG. 4 may be the first capsule 200 of FIG. 5A or the first capsule 300 of FIG. 5B. However, the shape of the first capsule 150 is not necessarily limited to FIGS. 5A and 5B, and the present disclosure may include all general shapes such as capsules or granules known in the art. Also, the first capsule 150 may be a temperature sensitive nicotine capsule.

Referring to FIG. 5A , the first capsule 200 may include a first core region 210 and a first shell region 220 surrounding the first core region 210 .

The first core region 210 may contain tobacco material. Tobacco material may include, for example, at least one of cut cut filler, sheet leaf cut filler, tobacco leaf, puffed tobacco, and nicotine extract. Thus, tobacco material may contain nicotine.

In addition, the first core region 210 may further include a moisturizing agent. Moisturizers may include aerosol-generating substances. The aerosol-generating substance can be, for example, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol and oleyl alcohol.

The first core region 210 may further include a flavor material.

The flavor material may be, for example, menthol, peppermint, spearmint oil, various fruit flavoring ingredients, etc., but is not necessarily limited thereto, and the flavor material may include various ingredients capable of providing flavor or flavor to the user. .

As an example, the first core region 210 may include nicotine, a moisturizer, and a flavor material. Specifically, the first core region 210 may contain a mixture of nicotine, glycerin, and flavor substances. When the first capsule 200 is heated, the nicotine and aerosol generating substances contained in the first core region 210 may be vaporized and an aerosol may be generated.

The first shell region 220 may surround the first core region 210 . The first shell region 220 may form an outer wall of the first capsule 200 . The first shell region 220 may generally have a thickness of about 10 nm to about 100 nm, and preferably may have a thickness of about 10 nm to about 50 nm. By adjusting the thickness of the first shell region 220, the amount of nicotine released from the first capsule 200 can be adjusted. Specifically, the response speed to external conditions (temperature) can be adjusted according to the thickness of the first shell region 220, and accordingly, the nicotine release speed can be adjusted. Capsules may be inserted into cartridges or sticks by volume so that a constant amount of nicotine can be delivered per puff depending on the rate of release of nicotine.

The first shell region 220 may be formed of a first temperature-sensitive polymer. The first temperature-sensitive polymer is, for example, pNIPAAm (poly (N-isopropylacrylamide)), pDEAM (poly (N, N-diethylacrylamide), pNEMAM (poly (N-ethylmethacrylamide), pMVE (poly (methyl vinyl ether), pEOVE (poly(2-ethoxyethyl vinyl ether)), pNVCa (poly(N-vinylcaprolactam), pNVIBAM (poly(N-vinylisobutyramide), or pNVBAM (poly(N-vinyl-n-butyramide).

In addition, the first temperature-sensitive polymer may include at least one of an ester group, an alcohol group, and an amide group. As an example, the temperature sensitive polymer having an ester group may be poly(ethylene oxide), poly(EO-propylene oxide) random copolymer, PEO-PPO-PEO triblock surfactants, alkyl-PEO block surfactant, or poly(vinyl methyl ether) The polymer having an alcohol group may be hydroxypropyl acrylate, hydroxypropyl methylcellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, methylcellulose, or poly(vinyl alcohol) derivatives, and the polymer having an amide group may be poly(N-substituted acrylamide), poly(N-acryloyl pyrrolidine), poly(N-acryloly piperidine), poly(acryl-L-amino acid amides), or poly(ethyl oxazoline).

The first temperature-sensitive polymer may have a lower critical solution temperature (LCST). Here, the "critical melting temperature" may mean a specific temperature at which a sol-gel phase transition or a volume phase transition of a certain polymer starts to occur. In addition, in Table 1 below, examples of temperature-sensitive polymers having a critical melting temperature are described. However, examples of the temperature-sensitive polymer are not necessarily limited to Table 1 below, and the present disclosure may include all known polymer materials having a specific critical melting temperature.

[Table 1]

In an embodiment, the first temperature-sensitive polymer may have a critical melting temperature in the range of about 10 °C to about 80 °C. As illustrated in Table 1, pNIPAAm (poly(N-isopropylacrylamide)) as the first temperature-sensitive polymer may have a critical melting temperature of about 32°C. When the first temperature-sensitive polymer is pNIPAAm, the first capsule 200 does not release nicotine at a temperature of less than about 32 ° C, but the first capsule 200 releases nicotine at a temperature of about 32 ° C or higher. 200) can be emitted to the outside. The same principle can be applied to other temperature-sensitive polymers.

Referring to FIG. 5B , the first capsule 300 may include a first core region 310 and a first shell region 320 surrounding the first core region 310 .

With respect to FIG. 5B, the items described in FIG. 5A may be equally applied. However, unlike the case of FIG. 5A, the first capsule 300 of FIG. 5B may have a cylindrical shape or a granule shape as a whole. The first portion of the aerosol-generating article may contain a plurality of first capsules 300 .

6 is a diagram schematically illustrating the configuration of an aerosol-generating article 400 according to an embodiment.

Regarding FIG. 6, the above-described items of FIGS. 4 and 5 may be equally applied. However, in the case of FIG. 6 , the first part 410 of the aerosol-generating article 400 may include a plurality of first capsules 450 . The first capsule 450 may be, for example, the first capsule 300 of FIG. 5B.

In an embodiment, each of the plurality of first capsules 450 disposed inside the first portion 410 may have a specific critical melting temperature due to the first temperature-sensitive polymer.

As previously exemplified, when the first temperature-sensitive polymer is pNIPAAm, the first temperature-sensitive polymer may have a critical melting temperature of about 32°C. Thus, when an aerosol-generating device (not shown) heats the first portion 410 of the aerosol-generating article 400, the plurality of first capsules 450 may melt at a temperature above the critical melting temperature.

Accordingly, the tobacco material and the aerosol generating material contained in the first core region may be discharged to the outside of the first capsule 450 and may be heated and vaporized. The user may inhale the aerosol generated in the first portion 410 through the second portion 420 and the third portion 430 .

7 is a diagram schematically showing the configuration of an aerosol-generating article 500 according to another embodiment.

With respect to FIG. 7 , the above-described items of FIGS. 4 to 6 may be equally applied.

In the case of FIG. 7 , unlike FIG. 6 , the first portion 510 may include a first capsule 551 and a second capsule 553 . The core region and the shell region of the first capsule 551 and the second capsule 553 may contain different materials. The first capsule 551 may contain a first temperature-sensitive polymer, and the second capsule 553 may contain a second temperature-sensitive polymer.

In an embodiment, the first temperature-sensitive polymer may have a critical melting temperature in the range of about 10 °C to about 40 °C, and the second temperature-sensitive polymer may have a critical melting temperature in the range of about 30 °C to about 80 °C. . In order to maintain smoking continuity, the first capsule 551 and the second capsule 553 may be mixed in different doses.

For example, the first capsule 551 may include a first core region and a first shell region. The first core region may contain nicotine and a moisturizing agent, and the first shell region may contain pNIPAAm as a first temperature-sensitive polymer. Since the critical dissolution temperature of pNIPAAM is about 32° C., the first capsule 551 can release nicotine and a moisturizer to the outside of the first capsule 551 at a temperature of about 32° C. or higher.

Also, the second capsule 553 may include a second core region and a second shell region. The second core region may contain nicotine and a moisturizing agent, and the second shell region may contain pNVIBAM as a second temperature-sensitive polymer. Since the critical dissolution temperature of pNVIBAM is about 39°C, the second capsule 553 can release nicotine and a moisturizer to the outside of the second capsule 553 at a temperature of about 39°C or higher.

In the foregoing example, even when the aerosol-generating article 500 is heated according to a specific temperature profile by an aerosol-generating device (not shown), the aerosol-generating article 500 may continue to emit an aerosol or nicotine. For example, if the aerosol-generating device heats the aerosol-generating article 500 along a temperature profile that rises from 30°C to 40°C, the aerosol-generating article 500 does not release nicotine at about 30-32°C and then , can release nicotine through the first capsule 551 at a temperature of about 32-39 ° C, and can release nicotine through both the first capsule 551 and the second capsule 553 at a temperature of about 39 ° C or higher. can

As another example, as in the case of FIG. 7, when the aerosol-generating article 500 contains both the first capsule 551 and the second capsule 553, the temperature profile of the aerosol-generating device is controlled to Nicotine release may continue to occur afterwards.

Although not illustrated in FIG. 7 , the first portion 510 of the aerosol-generating article 500 includes a third capsule (not shown) and a fourth capsule (not shown) in addition to the first capsule 551 and the second capsule 553 . ) and the like may be further included. When the types of temperature-sensitive polymers contained in the third and fourth capsules are different, nicotine may be released more continuously according to the temperature profile.

8 is a view showing a case where the aerosol generating article 600 according to the embodiment is inserted into the aerosol generating device 10.

A second aspect of the present disclosure includes an aerosol-generating article 600 according to the first aspect, and an accommodation space 12 accommodating the aerosol-generating article 600 and a heating element 11 for heating the aerosol-generating article 600 It is possible to provide an aerosol-generating system comprising an aerosol-generating device comprising a.

For the second aspect of the present disclosure, matters of the first aspect may be equally applicable.

In addition, with respect to FIG. 8, the above-described items of FIGS. 1 to 7 may be equally applied. Various embodiments of aerosol-generating articles not specifically illustrated in FIGS. 4-7 may be applied in FIG. 8 .

In an embodiment, the aerosol-generating device 10 may heat at least a portion of the first portion 610 of the aerosol-generating article 600 . Specifically, the aerosol generating device 10 may heat the end of the first part 610 . When capsules (not shown) are disposed in the first portion 610, aerosol may be generated by heating.

The aerosol generated in the first part 610 may be cooled through the second part 620, and the user may inhale the cooled aerosol through the third part 630.

In an embodiment, when the aerosol-generating device 10 is operated, the heating element 11 may be heated along an elevated temperature profile from about 35° C. to about 80° C. In this case, the temperature of the first portion 610 may be raised from about 30° C. to about 80° C., and the first capsule, the second capsule, etc. may begin to dissolve at their critical dissolution temperature and release nicotine. there is.

A third aspect of the present disclosure may provide a temperature sensitive nicotine capsule comprising a core region and a shell region surrounding the core region, the core region containing nicotine, and the shell region comprising a temperature sensitive polymer .

Regarding the third aspect of the present disclosure, matters of the first aspect and the second aspect may be equally applied. In addition, the first capsule, the second capsule, etc. may each be a temperature sensitive nicotine capsule.

In an embodiment, the temperature sensitive nicotine capsule may have a spherical, cylindrical, granular, sheet, or particle shape. However, it is not necessarily limited thereto, and the present disclosure may include all general types of capsules known in the art.

9A is a diagram illustrating a principle in which a temperature sensitive nicotine capsule according to an embodiment releases nicotine.

Referring to FIG. 9A , when the temperature sensitive nicotine capsule is not affected by temperature, acidity, thermal electric field, etc., the core region contains nicotine. However, for example, when heated to a temperature equal to or higher than the critical melting temperature, the temperature-sensitive nicotine capsule may release nicotine or the like contained in the core region to the outside of the capsule.

9B is a diagram showing an exemplary temperature profile at which an aerosol-generating device according to an embodiment heats an aerosol-generating article according to an embodiment.

In certain embodiments, pNIPAAM may be used as the first temperature-sensitive polymer in the first capsule, pNVBAM may be used as the second temperature-sensitive polymer in the second capsule, and pNEMAM may be used as the third temperature-sensitive polymer in the third capsule. there is. For example, an aerosol-generating article may comprise about 50-80% of a first capsule, about 40-60% of a second capsule, and about 20-40% of a third capsule. However, the present disclosure is not necessarily limited to the above, and the present disclosure may include all of various ratios of the first capsule, the second capsule, and the third capsule.

When the aerosol-generating device is operated with a temperature profile that gradually increases from about 35°C to about 60°C, the first capsule releases nicotine in the region heated to about 35°C and the second capsule releases nicotine in the region heated to about 40°C. The first capsule and the second capsule release nicotine, and in a region heated to about 60° C., the first to third capsules may all release nicotine. Accordingly, by appropriately adjusting the temperature profile, nicotine release can occur continuously from the aerosol-generating article over time.

The description of the above-described embodiments is merely illustrative, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true scope of protection of the invention will be determined by the appended claims, and all differences within the scope equivalent to those described in the claims will be construed as being included in the scope of protection defined by the claims.

10000: aerosol generating device
11000: battery
12000: control unit
13000: heater
14000: vaporizer
20000: aerosol-generating articles
100: aerosol generating article
110: first part
120: second part
130: third part
140: wrapper
150: first capsule
200, 300: 1st capsule
210, 310: first core region
220, 320: first shell region
10: aerosol generating device
11: heating element
12: Accommodation space

Claims (14)

In the aerosol-generating article,
a first portion comprising a first capsule and a second capsule;
a second portion cooling the airflow passing through the first portion; and
a third portion comprising a filter material;
The first part, the second part, and the third part are arranged in order based on the longitudinal direction of the aerosol-generating article,
The first capsule may include a first core region containing nicotine; And a first shell region surrounding the first core region and including a first temperature-sensitive polymer having a lower critical solution temperature (LCST) in the range of 10 ° C to 40 ° C;
The second capsule may include a second core region containing nicotine; and a second shell region surrounding the second core region and comprising a second temperature sensitive polymer having a critical melting temperature in the range of 30°C to 80°C. According to claim 1,
The aerosol-generating article of claim 1, wherein the first temperature-sensitive polymer and the second temperature-sensitive polymer include at least one of an ester group, an alcohol group, and an amide group. According to claim 1,
The first temperature-sensitive polymer and the second temperature-sensitive polymer are pNIPAAm (poly (N-isopropylacrylamide)), pDEAM (poly (N, N-diethylacrylamide), pNEMAM (poly (N-ethylmethacrylamide), pMVE (poly (methyl vinyl ether), poly(2-ethoxyethyl vinyl ether) (pEOVE), poly(N-vinylcaprolactam (pNVCa), poly(N-vinylisobutyramide (pNVIBAM), or poly(N-vinyl-n-butyramide) (pNVBAM). article. According to claim 1,
The aerosol-generating article of claim 1, wherein the first temperature-sensitive polymer and the second temperature-sensitive polymer have a critical melting temperature in the range of 10 °C to 80 °C. According to claim 1,
The aerosol-generating article of claim 1, wherein the first core region further comprises a humectant. delete delete According to claim 1,
wherein the first portion has a length of 16 to 28 mm, the second portion has a length of 12 to 14 mm, and the third portion has a length of 12 to 14 mm. According to claim 1,
wherein the first portion further comprises a third capsule. an aerosol-generating article according to any one of claims 1 to 5 and 8 to 9; and
an aerosol-generating device comprising an accommodation space for accommodating the aerosol-generating article and a heating element for heating the aerosol-generating article;
Including, an aerosol-generating system. According to claim 10,
wherein the aerosol-generating device heats at least a portion of the first portion. According to claim 10,
wherein when the aerosol-generating device is activated, the heating element is heated along an elevated temperature profile from 35°C to 80°C. delete delete

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