KR102412119B1 - Aerosol generating article comprising a first wrapper and a second wrapper, and aerosol generating system using the same - Google Patents

Abstract

The present disclosure relates to an aerosol-generating article comprising a first wrapper and a second wrapper, and an aerosol-generating system using the same.

Description

An aerosol-generating article comprising a first wrapper and a second wrapper, and an aerosol-generating system using the same

The present disclosure relates to an aerosol-generating article comprising a first wrapper and a second wrapper, and an aerosol-generating system using the same.

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

The heated aerosol-generating article, unlike a combustion cigarette, may contain a filler such as a moisturizer to promote the generation of aerosol. have.

In addition, the heated aerosol-generating article has a temperature difference between a region that is directly heated by the device and a region that is not directly heated, so there is a problem in that the generation of aerosol or the transfer of nicotine is not sufficiently achieved.

The aerosol-generating article according to the embodiment can solve the problems of the prior art described above.

However, the technical problems are not limited to the above, and other technical problems may be inferred from the examples below.

A first aspect of the present disclosure provides an aerosol-generating article comprising: a first portion comprising an aerosol-generating material; a second portion comprising tobacco material; a third portion for cooling the airflow passing through the first portion and the second portion; and a fourth portion comprising a filter material, wherein the first portion, the second portion, the third portion, and the fourth portion are arranged in sequence relative to the longitudinal direction of the aerosol-generating article; The aerosol-generating article comprises a first wrapper surrounding at least one of the first portion and the second portion and a second wrapper surrounding the first wrapper, the third portion, and the fourth portion It is possible to provide an aerosol-generating article, further comprising.

In embodiments, the first wrapper may have a thickness of 5 to 30 μm, and the second wrapper may have a thickness of 30 to 70 μm.

In embodiments, the first wrapper includes at least one of aluminum (Al), copper (Cu), zinc (Zn), gold (Au), silver (Ag), and iron (Fe), and the The second wrapper may include cellulose.

In embodiments, the first wrapper may have an induction resistance of 5 or more based on the 3M KIT method, and the first wrapper may have a thermal conductivity of 50 to 500 W·m ⁻¹ /K ⁻¹ .

In embodiments, the entire first wrapper and the second wrapper may have a tensile strength of 4.5 to 10 kgf.

A second aspect of the present disclosure provides an aerosol-generating article according to the first aspect; and an aerosol-generating device that heats at least one of the first portion and the second portion of the aerosol-generating article.

In embodiments, when the aerosol-generating article is heated using the aerosol-generating device, the second portion may have a maximum temperature in the range of 180°C to 250°C.

In embodiments, when the aerosol-generating article is heated using the aerosol-generating device, the second portion may be maintained at a temperature of 170° C. or higher from a time point 120 seconds after heating.

In embodiments, based on the longitudinal direction of the aerosol-generating article, the first portion extends to a length of 10 to 14 mm, the second portion extends to a length of 10 to 14 mm, the aerosol-generating article The apparatus may heat both a portion of the first portion and a portion of the second portion.

Means of solving the problem are not limited to the above, and may include all matters that can be inferred by a person skilled in the art throughout the present specification.

According to the aerosol-generating article according to the embodiment, leakage of liquid components contained in at least one of the first part and the second part may be reduced. Specifically, the aerosol-generating article according to the embodiment may have an induction resistance of 5 or more based on the 3M KIT method.

Further, according to the aerosol-generating article according to the embodiment, heat can be efficiently conducted to a region of the first part and the second part that is not directly heated by the device.

Further, according to the aerosol-generating article according to the embodiment, the entire wrapper including the first wrapper and the second wrapper has sufficient tensile strength (about 4.5 kgf or more), so that the cut surface is not separated during the manufacturing process of the aerosol-generating article may have an effect.

In addition, the aerosol-generating article according to the embodiment, by including the first wrapper of a metallic material, it is possible to reduce the occurrence of spots that may be generated in the manufacturing and distribution process of the aerosol-generating article.

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

1 is a diagram illustrating an aerosol-generating article inserted into an aerosol-generating device according to an embodiment.
2 is a diagram illustrating an aerosol-generating article inserted into an aerosol-generating device according to another embodiment.
3 is a diagram illustrating an aerosol-generating article inserted into an aerosol-generating device according to another embodiment.
4 is a diagram schematically illustrating the configuration of an aerosol-generating article according to an embodiment.
5 is a cross-sectional view of a second portion of an aerosol-generating article according to an embodiment.
6 is a diagram illustrating a case in which an aerosol-generating article is inserted into an aerosol-generating device according to an embodiment.
7 is a graph in which the temperature change of the second part is measured with time when the first wrapper and the second wrapper are applied to the aerosol-generating article according to an embodiment.
8 is a table showing the degree of liquid leakage of aerosol-generating articles according to Comparative Examples and Examples by comparing them through photos.

Terms used in the embodiments are selected as currently widely used general terms as possible in consideration of functions in the present disclosure, but may vary depending on intentions or precedents of those of ordinary skill in the art, emergence of new technologies, and the like. In addition, in a specific case, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the corresponding invention. Therefore, the terms used in the present disclosure should be defined based on the meaning of the term and the contents of the present disclosure, rather than the simple name of the term.

In the entire specification, when a part "includes" a certain element, this means that other elements may be further included, rather than excluding other elements, 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 may be implemented as a combination of hardware and software.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present disclosure will be described in detail so that those of ordinary skill in the art to which the present disclosure pertains can easily implement them. However, the present disclosure may be implemented in several different forms and is not limited to the embodiments described herein.

Throughout the specification, "A and/or B" means at least one of A and B.

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

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 the embodiment.

Referring to FIG. 1 , an aerosol generating device 10000 includes a battery 11000 , a controller 12000 , and a heater 13000 . 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 .

The aerosol-generating device 10000 shown in FIGS. 1 to 3 includes components related to the present embodiment. Therefore, it can be understood by those of ordinary skill in the art related to this embodiment that other general-purpose components in addition to the components shown in FIGS. 1 to 3 may be further included in the aerosol-generating device 10000. .

In addition, although it is illustrated that the heater 13000 is included in the aerosol generating device 10000 in FIGS. 2 and 3 , the heater 13000 may be omitted if necessary.

In FIG. 1 , the battery 11000 , the control unit 12000 , and the heater 13000 are illustrated as being arranged in a line. Also, in FIG. 2 , the battery 11000 , the controller 12000 , the vaporizer 14000 , and the heater 13000 are illustrated as being arranged in a line. In addition, FIG. 3 shows that the vaporizer 14000 and the heater 13000 are arranged in parallel. However, the internal structure of the aerosol generating device 10000 is not limited to that 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 activates the heater 13000 and/or vaporizer 14000 to cause the aerosol-generating article 20000 and/or vapor An aerosol may be generated from the firearm 14000 . The aerosol generated by the heater 13000 and/or vaporizer 14000 passes through the aerosol-generating article 20000 and is delivered to the user.

Optionally, 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 to operate the aerosol generating device 10000 . For example, the battery 11000 may supply power to the heater 13000 or the vaporizer 14000 to be heated, and may supply power required for the controller 12000 to operate. In addition, the battery 11000 may supply power required to operate a display, a sensor, a motor, etc. installed in the aerosol generating device 10000 .

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 of the components 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 a program executable in the microprocessor is stored. In addition, it can be understood by those skilled in the art that the present embodiment may be implemented in other types of hardware.

The heater 13000 may be heated by power supplied from the battery 11000 . For example, if the aerosol-generating article is inserted into the aerosol-generating device 10000 , the heater 13000 may be located external to the aerosol-generating article. Thus, the heated heater 13000 may raise the temperature of the aerosol-generating material within the aerosol-generating article.

The heater 13000 may be an electrically resistive heater. For example, the heater 13000 may include an electrically conductive track, and the heater 13000 may be heated as a current flows in the electrically conductive track. However, the heater 13000 is not limited to the above-described example, and may be applicable without limitation as long as it can be heated to a desired temperature. Here, the desired temperature may be preset 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 the aerosol-generating article in an induction heating manner, and the aerosol-generating article may include a susceptor capable of being heated by the induction heating heater.

For example, the heater 13000 may include a tubular heating element, a plate-shaped heating element, a needle-shaped heating element, or a rod-shaped heating element, depending on the shape of the heating element, inside or outside the aerosol-generating article 20000. It 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 into the aerosol-generating article 20000, or may be disposed outside the aerosol-generating article 20000. In addition, some of the plurality of heaters 13000 may be disposed to be inserted into the aerosol-generating article 20000 , and the rest 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.

Vaporizer 14000 may heat the liquid composition to generate an aerosol, and the generated aerosol may pass through aerosol-generating article 20000 and delivered to a user. In other words, the aerosol generated by the vaporizer 14000 may move along an airflow passage of the aerosol-generating device 10000 , and the airflow passageway allows the aerosol generated by the vaporizer 14000 to pass through the aerosol-generating article to the user It can be configured to 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 the liquid composition. For example, the liquid composition may be a liquid comprising a tobacco-containing material comprising a volatile tobacco flavor component, or may be a liquid comprising a non-tobacco material. The liquid storage unit may be manufactured to be detachable/attached from the vaporizer 14000 , or may be manufactured integrally with the vaporizer 14000 .

For example, the liquid composition may include water, a solvent, ethanol, a plant extract, a flavoring, flavoring agent, or a vitamin mixture. The fragrance may include, but is not limited to, menthol, peppermint, spearmint oil, various fruit flavoring ingredients, and the like. Flavoring agents may include ingredients capable of providing a user with a variety of flavors or flavors. 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 include 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, but is not limited to, a wick such as cotton fiber, ceramic fiber, glass fiber, or porous ceramic.

The heating element is an element for heating the liquid composition delivered by the liquid delivery means. For example, the heating element may be, but is not limited to, a metal heating wire, a metal heating plate, a ceramic heater, or the like. In addition, the heating element may be composed of a conductive filament, such as a nichrome wire, and may be arranged to be wound around the liquid delivery means. The heating element may be heated by supplying an electrical current, and may transfer heat to the liquid composition in contact with the heating element, thereby heating 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 in addition to 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 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 be introduced or internal gas may flow out even in a state in which 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.

The first part and the second part of the aerosol-generating article may be inserted into the aerosol-generating device 10000 , and the third part and the fourth part may be exposed to the outside. In addition, the entire first portion of the aerosol-generating article may be inserted into the aerosol-generating device 10000, and a portion of the second portion may be inserted. The user may inhale the aerosol while biting the fourth part with the mouth. At this time, the aerosol may be generated by passing the external air through the first part and the second part, and the generated aerosol may be delivered to the user's mouth through the third part and the fourth part.

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 and/or the size of the air passage formed in the aerosol generating device 10000 may be adjusted by the user. Accordingly, the amount of atomization, the feeling of smoking, and the like can be adjusted by the user. As another example, external air may be introduced into the interior of the aerosol-generating article 20000 through at least one hole formed in the surface of the aerosol-generating article 20000.

4 is a diagram schematically illustrating the configuration of an aerosol-generating article 20000 according to an embodiment.

According to an embodiment, the aerosol-generating article 20000 includes a first portion 21000 , a second portion 22000 , a third portion 23000 , and a fourth portion 24000 arranged in sequence relative to a longitudinal direction. can do. As an example, the first portion 21000 may include an aerosol-generating material, the second portion 22000 may include a tobacco material, and the third portion 23000 may include the first portion 21000 and the second portion 21000 . The second portion 22000 may cool the airflow through and the fourth portion 24000 may include filter material.

In an embodiment, the first portion 21000 , the second portion 22000 , the third portion 23000 , and the fourth portion 24000 are arranged in order relative to the longitudinal direction of the aerosol-generating article 20000 . can be Accordingly, the aerosol generated in at least one of the first portion 21000 and the second portion 22000 is the first portion 21000, the second portion 22000, the third portion 23000, and the fourth portion ( 24000 ) may form an airflow, and thus the user may inhale the aerosol from the fourth portion 24000 .

In an embodiment, the first portion 21000 may extend from the distal end of the aerosol-generating article 20000 to a portion from about 8 to about 12 mm, and the second portion 22000 is the point where the first portion 21000 ends. from about 10 to about 14 mm. However, it is not necessarily limited to these numerical ranges, and the lengths of the first and second parts 21000 and 22000 respectively extended may be appropriately adjusted within a range that can be easily changed by a person skilled in the art.

Specifically, the first portion 21000 may include an aerosol-generating material. Here, the aerosol-generating material may include, for example, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol and oleyl alcohol.

The second portion 22000 may include tobacco material. In the case of a heated cigarette, as the tobacco material, for example, cut cut filler, reconstituted tobacco, puffed tobacco, and the like can be used. In addition, the second portion 22000 may include a continuously extending tobacco sheet. In addition, the second portion 22000 may additionally include an aerosol-generating material such as a moisturizer. The component of the aerosol-generating material included in the second part 22000 may be the same as the component of the aerosol-generating material included in the first part 21000 . However, the present disclosure is not necessarily limited thereto.

The third portion 23000 may cool an airflow formed by an aerosol generated in at least one of the first portion 21000 and the second portion 22000 . The third part 23000 may be made of a polymer material or a biodegradable polymer material, and may have a cooling function. For example, the third portion 23000 may be made of polylactic acid (PLA) fiber, but is not limited thereto. Alternatively, the third part 23000 may be made of a cellulose acetate filter having a plurality of holes. However, the third portion 23000 is not limited to the above-described example, and the material performing the function of cooling the aerosol may correspond to this without limitation. For example, the third portion 23000 may be a tube filter or a paper tube filter including a hollow.

The fourth portion 24000 may include a filter material. For example, the fourth portion 24000 may be a cellulose acetate filter. Meanwhile, the shape of the fourth part 24000 is not limited. For example, the fourth portion 24000 may be a cylindrical rod, or a tubular rod including a hollow therein. Also, the fourth part 24000 may be a recess type rod. If the fourth part 24000 includes a plurality of segments, at least one of the plurality of segments may be manufactured in a different shape.

The fourth portion 24000 may be manufactured to generate flavor. As an example, the flavoring liquid may be injected into the fourth part 24000 , and a separate fiber to which the flavoring liquid is applied may be inserted into the fourth part 24000 .

In an embodiment, the aerosol-generating article 20000 may include a first wrapper 25000 and a second wrapper 26000 . For example, the first wrapper 25000 may surround at least one of the first portion 21000 and the second portion 22000 . Also, for example, the second wrapper 26000 may surround the first wrapper 25000 , the third portion 23000 , and the fourth portion 24000 . More specifically, the first wrapper 25000 may surround only the first portion 21000 or the second portion 22000 . Also, the first wrapper 25000 may surround all of the first portion 21000 and a partial region of the second portion 22000 . In any case, the second wrapper 26000 may surround the first wrapper 25000 , the third portion 23000 , and the fourth portion 24000 . However, the present disclosure is not necessarily limited to the above.

In an embodiment, the second wrapper 26000 may be located at the outermost portion of the aerosol-generating article 20000, and the second wrapper 26000 has at least one hole through which external air enters or internal gas flows. ) can be formed. The second wrapper 26000 may be defined as a single wrapper, but the second wrapper 26000 may be defined as a combination of a plurality of wrappers.

As an example, first portion 21000 of aerosol-generating article 20000 may include a crimped corrugated sheet containing an aerosol-generating material, and second portion 22000 may include chopped cut filler, and the third The portion 23000 includes a cooling unit, the fourth portion 24000 may include a filter material, the first wrapper 25000 is formed of a silver (Ag) thin film or a copper (Cu) thin film, and the second wrapper (26000) may be formed of a cellulose wrapper. However, the present disclosure is not necessarily limited thereto.

5 is a cross-sectional view of a second portion 22000 of an aerosol-generating article 20000 according to an embodiment. In FIG. 5 , the second part 22000 is mainly described, but the first part 21000 may also be surrounded by the first wrapper 25000 , and accordingly, the first wrapper 25000 and the first part 25000 to be described below. The description of the second wrapper 26000 may be equally applied not only to the second part 22000 but also to the first part 21000 .

In an embodiment, the second portion 22000 of the aerosol-generating article 20000 may include tobacco material 100 , a first wrapper 25000 , and a second wrapper 26000 disposed in order from the inside. have. Tobacco material 100 may be contained in second portion 22000 in the form of cut cut filler, for example.

In an embodiment, the first wrapper 25000 has a cylindrical shape, and may surround the tobacco material 100 . The first wrapper 25000 may have a thickness d ₁ of about 5 to about 30 μm. When the first wrapper 25000 has a thickness in the numerical range described above, heat can be properly transferred to an area that is not directly heated by the device among the first portion 21000 and the second portion 22000, and the second Leakage of liquid components such as a moisturizer included in at least one of the first part 21000 and the second part 22000 may be reduced from the inside to the outside. In addition, the tensile strength of the entire wrapper including the first wrapper 25000 and the second wrapper 26000 may be improved.

In an embodiment, the first wrapper 25000 may have a thermal conductivity of about 50 to about 500 W·m ⁻¹ /K ⁻¹ . Since the aerosol-generating article 20000 according to the embodiment includes the first wrapper 25000 made of a metallic material, thermal conductivity within the aerosol-generating article 20000 through free electrons may be improved, and accordingly, the aerosol-generating article 20000 ), areas that are not directly heated within the can be effectively heated.

Also, the first wrapper 25000 may include at least one of aluminum (Al), copper (Cu), zinc (Zn), gold (Au), silver (Ag), and iron (Fe). Preferably, the first wrapper 25000 may have a cylindrical shape formed of a metal thin film. For example, the first wrapper 25000 may have a cylindrical shape made of aluminum foil, copper foil, or silver foil. Since the first wrapper 25000 has a cylindrical shape formed of a metal thin film, heat can be efficiently transferred to a region that is not directly heated by the device among the first part 21000 and the second part 22000, Leakage of liquid components such as a moisturizer included in at least one of the first part 21000 and the second part 22000 from the inside to the outside can be reduced.

In an embodiment, the second wrapper 26000 may have a thickness d ₂ of about 30 to about 70 μm. The second wrapper 26000 may surround the entire aerosol-generating article 20000 . For example, the second wrapper 26000 may surround the first wrapper 25000 , the third portion 23000 , and the fourth portion 24000 . Accordingly, the first portion 21000 and the second portion 22000 may be surrounded by both the first wrapper 25000 and the second wrapper 26000, and the third portion 23000 and the fourth portion 24000 ) may be surrounded only by the second wrapper 26000 . However, the present disclosure is not necessarily limited thereto.

The second wrapper 26000 may include cellulose or dextrin. Preferably, the second wrapper 26000 may be a cellulose wrapper.

In an embodiment, the entire wrapper including both the first wrapper 25000 and the second wrapper 26000 may have a thickness (d ₁ +d ₂ ) of about 35 to about 100 μm. As the thickness of the entire wrapping paper of the aerosol-generating article 20000 has the above-described numerical range, leakage of liquid components such as a moisturizer to the outside can be reduced.

In addition, the entire first wrapper 25000 and the second wrapper 26000 may have a tensile strength of about 4.5 to about 10 kgf. Since the entire first wrapper 25000 and the second wrapper 26000 have tensile strength in the above-described numerical range, each configuration of the cut surface during the manufacturing process of the aerosol-generating article 20000 may not be separated.

6 is a diagram illustrating a case in which an aerosol-generating article 20000 according to an embodiment is inserted into the aerosol-generating device 10 . For convenience of description, the third part and the fourth part of the aerosol-generating article 20000 shown in FIG. 6 are omitted.

A second aspect of the present disclosure is an aerosol-generating article 20000 according to the first aspect and an aerosol-generating device that heats at least one of a first portion 21000 and a second portion 22000 of the aerosol-generating article 20000 An aerosol-generating system comprising (10) may be provided.

Referring to FIG. 6 , the aerosol-generating device 10 may include a receiving space 11 accommodating an aerosol-generating article 20000 and a heating element 11 for heating the aerosol-generating article 20000 .

In an embodiment, the aerosol-generating article 20000 is inserted into the receiving space 11 and the heating element 11 powered from a battery (not shown) inside the aerosol-generating device 10 comprises the aerosol-generating article ( The first portion 21000 and the second portion 22000 of 20000 may be heated. Specifically, the heating element 11 may heat a portion of the first portion 21000 and a portion of the second portion 22000 of the aerosol-generating article 20000 . For example, the area where the heating element 11 covers the aerosol-generating article 20000 may be a portion of the first portion 21000 and a portion of the second portion 22000, as shown in FIG. 6 , Accordingly, the entirety of the first portion 21000 and the second portion 22000 may not be directly heated.

In an embodiment, the first wrapper 25000 may effectively transfer heat transferred from the heating element 11 to the first portion 21000 and the second portion 22000 . In particular, the measuring point M of the aerosol-generating article 20000 shown in FIG. 6 may not be directly heated as it is not covered by the heating element 11 . However, according to the present disclosure, since the first wrapper 25000 has excellent thermal conductivity, the first wrapper 25000 measures the heat supplied from the heating element 11 along the longitudinal direction of the aerosol-generating article 20000 It can be effectively transmitted up to the point (M). Accordingly, the whole of the first part 21000 and the second part 22000 can receive heat relatively uniformly, and the amount of the aerosol formed by heating the first part 21000 and the second part 22000 and Nicotine transfer may be increased.

7 is a graph measuring the temperature change of the second part 22000 over time when the first wrapper 25000 and the second wrapper 26000 are applied to the aerosol-generating article 20000 according to an embodiment. . Specifically, as shown in FIG. 6 , after inserting the aerosol-generating article 20000 into the aerosol-generating device 10 , and operating the heating element 11 , at the measurement point M corresponding to the second part 22000 , The temperature change was measured.

Referring to FIG. 7 , as a comparative example, it was confirmed that the aerosol-generating article without a wrapper had a slow rate of temperature increase over time, and had an average temperature of about 140°C and a maximum temperature of about 170°C. On the other hand, the silver foil wrapper applied aerosol-generating article as an example has a fast temperature rise rate over time, and has an average temperature of about 170° C. and a maximum temperature of about 190° C.

In addition, as an embodiment, the copper foil wrapper applied aerosol-generating article has the fastest temperature rise rate over time, and has an average temperature of about 180° C. and a maximum temperature of about 190° C.

Thus, in an embodiment, it has been found that when the aerosol-generating article is heated using the aerosol-generating device, the second portion may have a maximum temperature in the range of about 180°C to about 250°C.

In addition, in the embodiment, when the aerosol-generating article is heated using the aerosol-generating device, it was confirmed that the second part can be maintained at a temperature of about 170° C. or higher from a time point 120 seconds after the heating.

Meanwhile, the first wrapper 25000 may have an induction resistance of 5 or more based on the 3M KIT method. Induction resistance measurement by the 3M KIT method was performed as follows.

- principle

In order to analyze the oil resistance of a branch, prepare the oil resistance measurement solution and drop it on the test piece. After a certain period of time, judge the oil resistance with the highest solution number that does not leave any oil marks on the test piece.

- Instruments and devices

As a stock bottle (storage bottle), a storage bottle made of a glass stopper or a foil lined cap that can prevent evaporation was used. As the test bottle, a bottle equipped with a dropper or rod capable of dropping the solution to the test piece was used.

- Test Methods

The solution was prepared by mixing Castor oil, Toluene, and Heptane in a ratio determined by Kit Number as shown in the table below.

Test the test piece from the lowest kit number reagent, drop one drop of the prepared reagent on the test piece, and after 15 seconds, remove the dripped reagent with a damp cotton swab or tissue and check for oil marks.

If the oil marks do not appear, the test was continued while increasing the kit number, and the experiment was conducted until oil marks occurred. The oil resistance was evaluated by applying the kit number without the final oil mark.

As a result of evaluating the induction resistance of the aerosol-generating article according to the present disclosure based on the 3M KIT method described above, the first wrapper 25000 according to the embodiment may have an induction resistance of 5 or more based on the 3M KIT method Confirmed.

8 is a table showing the degree of liquid leakage of aerosol-generating articles according to Comparative Examples and Examples by comparing them through photos.

Referring to FIG. 8 , as a comparative example, it can be seen that the aerosol-generating article without a wrapper causes a relatively large amount of leakage of the liquid component of the second part. On the other hand, as an embodiment, it can be confirmed that, in the aerosol-generating article to which the wrapper is applied, the leakage of the liquid component of the second part is relatively small and does not occur. Therefore, according to the present disclosure, there is an advantage in that the resistance to induction of the aerosol-generating article is improved.

Although not illustrated through the drawings, according to the present disclosure, the first wrapper may surround only the first portion of the aerosol-generating article.

Specifically, the present disclosure provides a first portion comprising an aerosol-generating material; a second portion comprising tobacco material; a third portion for cooling the airflow passing through the first portion and the second portion; and a fourth portion comprising filter material, wherein the first portion, the second portion, the third portion, and the fourth portion are arranged in sequence relative to the longitudinal direction of the aerosol-generating article, the aerosol-generating article comprising: An aerosol-generating article may be provided, further comprising a first wrapper surrounding the first portion and a second wrapper surrounding the first wrapper, the second portion, the third portion, and the fourth portion.

For the above-described case, the above-described matters may be equally applied. However, since the first wrapper made of a metal material surrounds only the first part of the aerosol-generating article, thermal conductivity in the first part is improved, and the leakage of moisturizer components such as an aerosol-generating material included in the first part can be reduced. have. In particular, in the case of the aerosol-generating article according to the embodiment, since the aerosol-generating material contained in the first part may be included in a liquid form, the effect of preventing leakage may be important. By preventing or reducing leakage from the first part through the first wrapper, the durability of the aerosol-generating article can be improved, and a better feeling of smoking can be provided to the user.

Also, in accordance with the present disclosure, the first wrapper may surround only the second portion of the aerosol-generating article. In this case, thermal conductivity in the second part may be improved, and leakage of moisturizing agents such as an aerosol generating material included in the second part may be reduced.

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

10000: aerosol generating device
11000: battery
12000: control
13000: heating element
14000: vaporizer
20000: aerosol-generating article
21000: first part
22000: second part
23000: 3rd part
24000: 4th part
25000: 1st rapper
26000: 2nd rapper
100: tobacco substance
10: aerosol generating device
11: heating element
12: accommodating space
M: measuring point

Claims (9)

In an aerosol-generating article,
a first portion comprising an aerosol-generating material;
a second portion comprising tobacco material;
a third portion for cooling the airflow passing through the first portion and the second portion; and
a fourth portion comprising filter material;
wherein the first part, the second part, the third part, and the fourth part are arranged in order with respect to the longitudinal direction of the aerosol-generating article,
the aerosol-generating article further comprising a first wrapper surrounding the first portion and the second portion and a second wrapper surrounding the first wrapper, the third portion, and the fourth portion; ,
The first wrapper includes at least one of aluminum (Al), copper (Cu), zinc (Zn), gold (Au), silver (Ag), and iron (Fe),
Aerosol-generating articles. The method of claim 1,
The first wrapper has a thickness of 5 to 30 μm,
wherein the second wrapper has a thickness of 30 to 70 μm. The method of claim 1,
wherein the second wrapper comprises cellulose. The method of claim 1,
The first wrapper has an induction resistance of 5 or more based on the 3M KIT method, and the first wrapper has a thermal conductivity of 50 to 500 W·m ⁻¹ /K ⁻¹ , an aerosol-generating article. The method of claim 1,
wherein the first wrapper and the second wrapper collectively have a tensile strength of 4.5 to 10 kgf. An aerosol-generating article according to claim 1 ; and
an aerosol-generating device for heating at least one of the first portion and the second portion of the aerosol-generating article;
comprising, an aerosol-generating system. 7. The method of claim 6,
When the aerosol-generating article is heated using the aerosol-generating device, the second portion has a maximum temperature in the range of 180°C to 250°C. 7. The method of claim 6,
When the aerosol-generating article is heated using the aerosol-generating device, the second portion is maintained at a temperature of 170° C. or higher from a time point 120 seconds after heating. 7. The method of claim 6,
relative to the longitudinal direction of the aerosol-generating article, the first portion extends in a length of 10 to 14 mm, the second portion extends in a length of 10 to 14 mm;
wherein the aerosol-generating device heats both a portion of the first portion and a portion of the second portion.

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