JP7291242B2 - Aerosol-generating article including first wrapper and second wrapper, and aerosol-generating system using the same - Google Patents

Description

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

Recently, there has been an increasing demand for alternative methods to overcome the shortcomings of common aerosol-generating articles. For example, there is an increasing demand for methods of generating aerosols by heating an aerosol-generating substance within an aerosol-generating article rather than by burning the aerosol-generating article to generate an aerosol. Accordingly, researches related to heated aerosol-generating articles and heated aerosol-generating devices are being actively pursued.

Heated aerosol-generating articles, unlike combustible cigarettes, may contain fillers, such as humectants, to promote aerosol generation, but may be contained within using common filter wrappers. Liquid ingredients such as fillers can leak.

Heated aerosol-generating articles also suffer from temperature differentials between areas that are directly heated by the device and areas that are not directly heated, resulting in poor aerosol generation and nicotine transfer.

The problem to be solved by the present invention is to provide an aerosol-generating article that overcomes the problems of the prior art described above.

However, the technical problems are not limited to those described above, and other technical problems can be inferred from the following examples.

A first aspect of the present invention provides an aerosol-generating article for cooling a first portion containing an aerosol-generating material, a second portion containing tobacco material, and an airflow passing through the first portion and the second portion. a third portion, a fourth portion containing a filtering material, a first wrapper surrounding at least one of said first portion and said second portion, said first wrapper and said third portion. and a second wrapper wrapping around the fourth portion, wherein the first portion, the second portion, the third portion, and the fourth portion are sequentially with respect to the longitudinal direction of the aerosol-generating article. The aerosol-generating article can be provided that is aligned with the

In an embodiment, the first wrapper has a thickness of 5-30 μm and the second wrapper has a thickness of 30-70 μm.

In an embodiment, 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 comprise cellulose.

In an embodiment, the first wrapper has an oil resistance of 5 or more based on the 3M KIT method, and a thermal conductivity of 50-500 W·m ⁻¹ /K ⁻¹ .

In an embodiment, both the first wrapper and the second wrapper have a tensile strength of 4.5-10 kgf.

A second aspect of the invention is an aerosol comprising an aerosol-generating article according to the first aspect and an aerosol-generating device for heating at least one of said first portion and said second portion of said aerosol-generating article. A generation system can be provided.

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

In an embodiment, 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 120 seconds after heating.

In an embodiment, the first portion has a length of 10-14 mm, the second portion has a length of 10-14 mm, and the aerosol generator comprises a portion of the first portion and Any portion of the second portion may be heated.

Solutions to the problems are not limited to those described above, and may include any matter that can be inferred by a person of ordinary skill in the entire specification.

According to the aerosol-generating article according to the embodiment, leakage of the liquid component contained in at least one of the first portion and the second portion can be reduced. Specifically, an aerosol-generating article according to an embodiment can have an oil resistance rating of 5 or greater based on the 3M KIT method.

Further, according to the aerosol-generating article according to the embodiment, heat can be efficiently conducted to regions of the first portion and the second portion that are not directly heated by the device.

Further, according to the aerosol-generating articles according to the examples, the entire wrapping paper including the first wrapper and the second wrapper has a sufficient tensile strength (approximately 4.5 kgf or more), so that aerosol is generated during the manufacturing process of the aerosol-generating article. It can have the effect that different parts of the article are not separated from each other.

In addition, since the aerosol-generating article according to the embodiment includes the first wrapper made of a metal material, it is possible to reduce the occurrence of spots (e.g., oil marks) that occur during the manufacturing and distribution processes of the aerosol-generating article. can.

The effects of the present invention are not limited to those described above, and may include any effect that can be inferred from the configuration described later.

FIG. 4 is a drawing showing an aerosol-generating article inserted into an aerosol-generating device according to an embodiment; FIG. 4 is a drawing showing an aerosol-generating article inserted into an aerosol-generating device according to another embodiment; FIG. 10 is a drawing showing an aerosol-generating article inserted into an aerosol-generating device according to another embodiment; BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic diagram illustrating the configuration of an aerosol-generating article according to one embodiment; FIG. 2 is a cross-sectional view of a second portion of an aerosol-generating article according to one embodiment; FIG. 4 is a drawing showing a case where an aerosol-generating article according to one embodiment is inserted into an aerosol-generating device; FIG. 4 is a graph of measured temperature changes of a second portion of an aerosol-generating article over time according to one embodiment. 4 is a photograph showing the degree of leakage of an aerosol-generating article according to one example.

For the terms used in the examples, general terms that are currently widely used were selected as much as possible while considering the functions in the present invention, but this is not intended by a person skilled in the art or It also varies depending on judicial precedents and the emergence of new technologies. Also, in certain cases, some terms are arbitrarily chosen by the applicant, and their meanings are set forth in detail in the description portion of the invention. Therefore, the terms used in the present invention should be defined based on the meanings of the terms and the general content of the present invention rather than simple term names.

Throughout the specification, when a part "includes" a component, it does not exclude other components, and may further include other components, unless specifically stated to the contrary. means good. In addition, terms such as "... unit" and "... module" described in the specification mean a unit for processing at least one function or operation, which may be implemented by hardware or software, or may be implemented by hardware or software. It is also embodied by a combination of hardware and software.

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. This invention may, however, be embodied in many different forms and is not limited to the illustrative embodiments set forth 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 over another member, whether the member is disposed in contact with or without contact with the other member. Also includes

Expressions such as "at least one," as used herein, qualify the overall configuration list and do not qualify individual configurations of the list. For example, the phrase "at least one of a, b and c" means "a", "b", "c", "a and b", "a and c", "b and c" or " It should be understood to include both "a, b and c".

When an element or layer is referred to as being “above,” “above,” “connected to,” or “coupled with” another element or layer, it refers to the other element or layer. Layers may be directly connected, directly coupled, or there may be separate coupled elements or layers. In contrast, when an element is referred to as being "directly above," "directly above," "directly connected to," or "directly connected to" another element or layer, there is no separate element in between. It must be understood that it does not exist. Like reference numbers refer to like elements throughout.

Embodiments of the present invention will be described in detail below with reference to the drawings.

1 to 3 are diagrams showing an example 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, the aerosol generator 10000 includes a battery 11000, a controller 12000, and a heater 13000. FIG. Referring to FIGS. 2 and 3, the aerosol generator 10000 further includes a vaporizer 14000. As shown in FIG. Also, an aerosol-generating article 20000 can be inserted into the internal space of the aerosol-generating device 10000 .

The aerosol generator 10000 illustrated in FIGS. 1-3 illustrates the components according to the present embodiment. Therefore, a person having ordinary knowledge in the technical field related to this embodiment will know that the aerosol generator 10000 further includes other general-purpose components in addition to the components illustrated in FIGS. If so, you will understand.

Also, although FIGS. 2 and 3 show that the aerosol generator 10000 includes the heater 13000, the heater 13000 may be omitted if desired.

FIG. 1 shows that a battery 11000, a controller 12000, and a heater 13000 are arranged in a row. FIG. 2 also shows that the battery 11000, the controller 12000, the vaporizer 14000, and the heater 13000 are arranged in a row. FIG. 3 also shows that the vaporizer 14000 and the heater 13000 are arranged in parallel. However, the internal structure of the aerosol generator 10000 is not limited to that shown in FIGS. 1-3. That is, the arrangement of the battery 11000, the controller 12000, the heater 13000, and the vaporizer 14000 can be changed according to the design of the aerosol generator 10000. FIG.

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 to generate aerosol from the aerosol-generating article 20000 and/or the vaporizer 14000. sell. Aerosol generated by heater 13000 and/or vaporizer 14000 passes through aerosol-generating article 20000 and is transmitted to the user.

Optionally, the aerosol-generating device 10000 can heat the heater 13000 even when the aerosol-generating article 20000 is not inserted into the aerosol-generating device 10000 .

A battery 11000 supplies power used to operate the aerosol generator 10000 . For example, the battery 11000 can supply power to heat the heater 13000 or the vaporizer 14000 and supply power necessary for the operation of the controller 12000 . In addition, the battery 11000 can supply power necessary for operating the display, sensor, motor, etc. provided in the aerosol generator 10000 .

The control unit 12000 generally controls the operation of the aerosol generator 10000 . Specifically, the controller 12000 controls the operations of the battery 11000, the heater 13000, and the vaporizer 14000 as well as other components included in the aerosol generator 10000. FIG. The control unit 12000 can also check the state of each configuration of the aerosol generator 10000 and determine whether the aerosol generator 10000 is in an operable state.

Control unit 12000 includes at least one processor. The processor may be implemented as an array of logic gates, and may be implemented as a combination of a general-purpose microprocessor and a memory storing programs executable by the microprocessor. It will also be appreciated by those skilled in the art to which the present embodiments pertain that other forms of hardware may be implemented.

The heater 13000 can 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 can increase the temperature of the aerosol-generating substance within the aerosol-generating article.

Heater 13000 is also an electrical resistive heater. For example, the heater 13000 may include electrically conductive tracks, and the heater 13000 may be heated by passing current through the electrically conductive tracks. However, the heater 13000 is not limited to the example described above, and can be used without limitation as long as it can be heated to a desired temperature. Here, the desired temperature may be preset in the aerosol generator 10000, or may be set to the desired temperature by the user.

On the other hand, as another example, the heater 13000 is also an induction heater. Specifically, the heater 13000 may include an electrically conductive coil for inductively heating the aerosol-generating article, and the aerosol-generating article may include a susceptor that may be heated by the induction heater.

For example, heater 13000 may include tubular heating elements, plate heating elements, needle heating elements, or bar heating elements, and may heat the interior or exterior of aerosol-generating article 20000 depending on the shape of the heating element.

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

Vaporizer 14000 heats the liquid composition to generate an aerosol, which can be transmitted through aerosol-generating article 20000 to a user. That is, the aerosol produced by the vaporizer 14000 travels along the airflow path of the aerosol-generating device 10000, which allows the aerosol produced by the vaporizer 14000 to pass through the aerosol-generating article and be transmitted to the user. can be configured to be

For example, vaporizer 14000 may include, but is not limited to, liquid storage, liquid delivery means, and heating elements. For example, the liquid storage, liquid delivery means, and heating element are independent modules and included in the aerosol generating device 10000. FIG.

The liquid storage section can store a liquid composition. For example, a liquid composition can be a liquid containing tobacco-containing substances, including volatile tobacco flavor components, or a liquid containing non-tobacco substances. The liquid reservoir is made to detach/attach from the vaporizer 14000 and can also be made integral with the vaporizer 14000 .

For example, liquid compositions may include water, solvents, ethanol, botanical extracts, fragrances, flavors, or vitamin mixtures. Flavors include, but are not limited to, menthol, peppermint, spearmint oils, various fruit flavoring ingredients, and the like. Flavoring agents may include ingredients that provide a variety of flavors or flavors to the user. A vitamin mixture is also 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 forming agents such as glycerin and propylene glycol.

A liquid transfer means can transfer the liquid composition of the liquid reservoir to the heating element. For example, but not limited to, liquid transfer means, cotton fibers, ceramic fibers, glass fibers, wicks such as porous ceramics.

A heating element is an element for heating the liquid composition conveyed by the liquid conveying means. For example, the heating element can be a metal hot wire, a metal hot plate, a ceramic heater, etc., but is not limited to them. The heating element may also be arranged by a structure consisting of a conductive filament, such as Nichrome wire, wound around the liquid transfer means. The heating element can be heated by an electrical current supply to transfer heat to the liquid composition in contact with the heating element to heat the liquid composition. As a result, an aerosol can be generated.

For example, vaporizer 14000 is also referred to as, but is not limited to, a cartomizer or atomizer.

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

Although not shown in FIGS. 1 to 3, the aerosol generator 10000 can also constitute a system together with a separate cradle. For example, the cradle can be used to charge the battery 11000 of the aerosol generator 10000. FIG. Alternatively, the heater 13000 can be heated while the cradle and the aerosol generator 10000 are combined.

As an example, outside air can be introduced through at least one air passageway formed in the aerosol generator 10000 . For example, the opening and closing of the air passage formed in the aerosol generator 10000 and/or the size of the air passage can be adjusted by the user. Thereby, the amount of atomization, the feeling of smoking, etc. can be adjusted by the user. As another example, external air can enter the interior of the aerosol-generating article 20000 through at least one hole formed in the surface of the aerosol-generating article 20000 .

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

According to an embodiment, the aerosol-generating article 20000 may include a first portion 21000, a second portion 22000, a third portion 23000, and a fourth portion 24000 sequentially aligned with respect to the longitudinal direction. As an example, the first portion 21000 may include an aerosol-generating substance, the second portion 22000 may include tobacco material, and the third portion 23000 may direct airflow through the first portion 21000 and the second portion 22000. Allowed to cool, the fourth portion 24000 may include filter material.

In some embodiments, the first portion 21000, the second portion 22000, the third portion 23000, and the fourth portion 24000 may be sequentially aligned with respect to the longitudinal direction of the aerosol generating article 20000. FIG. As a result, the aerosol generated in at least one of the first portion 21000 and the second portion 22000 sequentially passes through the first portion 21000, the second portion 22000, the third portion 23000, and the fourth portion 24000. allows the user to inhale the aerosol from the fourth portion 24000 .

In embodiments, the first portion 21000 has a length of about 8-12 mm from the end of the aerosol-generating article 20000 and the second portion 22000 has a length of about 10-14 mm from the end point of the first portion 21000. can have However, the embodiment is not necessarily limited to such a numerical range, and the extending length of each of the first portion 21000 and the second portion 22000 can be appropriately changed within a range that can be easily changed by ordinary engineers. can be adjusted.

Specifically, the first portion 21000 may include an aerosol-generating substance. Here, the aerosol-generating substance 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. For heated cigarettes, the tobacco material may be, for example, cut tobacco, reconstituted tobacco, puffed tobacco, and the like. The second portion 22000 may also include a tobacco sheet that continues to grow in length. Also, the second portion 22000 can additionally include an aerosol-generating substance such as a moisturizer. The components of the aerosol-generating substance contained in the second portion 22000 are the same as the components of the aerosol-generating substance contained in the first portion 21000 . However, the invention is not necessarily so limited.

The third portion 23000 may cool airflow formed by aerosol generated in at least one of the first portion 21000 and the second portion 22000 . The third part 23000 is made of polymer or biodegradable polymer and can have a cooling function. For example, the third portion 23000 is made of polylactic acid (PLA) fibers, but is not so limited. Alternatively, the third portion 23000 can be made of a cellulose acetate filter with a plurality of pores formed therein. However, the third portion 23000 is not limited to the above examples, and any material that performs the function of cooling the aerosol can be applicable without limitation. For example, the third part 23000 can also be a tube filter containing a hollow or a paper tube filter.

The fourth portion 24000 may contain a filter material. For example, the fourth portion 24000 is also a cellulose acetate filter. On the other hand, the shape of the fourth portion 24000 is not limited. For example, the fourth portion 24000 may be a cylindrical rod or a tubular rod containing a hollow inside. The fourth portion 24000 is also a recessed rod. If the fourth portion 24000 is composed of multiple segments, at least one of the multiple segments is also fabricated in a different shape.

The fourth portion 24000 is also made flavor-generating. For example, the fourth part 24000 may be sprayed with a perfumed liquid, or a separate fiber coated with the perfumed liquid 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 wraps around at least one of the first portion 21000 and the second portion 22000 . Also, for example, the second wrapper 26000 wraps the first wrapper 25000, the third portion 23000, and the fourth portion 24000. FIG. For example, the first wrapper 25000 wraps only the first part 21000 or the second part 22000 . Also, the first wrapper 25000 wraps the entire first portion 21000 and a partial area of the second portion 22000 . In any case, the second wrapper 26000 wraps around the first wrapper 25000, the third portion 23000 and the fourth portion 24000. However, the present invention is not necessarily limited to the above.

In an embodiment, the second wrapper 26000 is positioned at the outermost portion of the aerosol-generating article 20000, and has at least one hole through which external air is introduced or internal gas is discharged. can be formed. The second wrapper 26000 is a single wrapper, or the second wrapper 26000 is a combination of multiple wrappers.

By way of example, a first portion 21000 of an aerosol-generating article 20000 may comprise a crimped, crimped sheet containing an aerosol-generating substance, a second portion 22000 may comprise cut tobacco, and a third portion 23000 may comprise , a cooling part, a fourth part 24000 may contain a filter material, a first wrapper 25000 is formed by a silver (Ag) thin film or a copper (Cu) thin film, and a second wrapper 26000 is formed by cellulose wrapping paper. can be However, the present invention is not necessarily limited thereto.

When the aerosol-generating article 20000 is coupled to the aerosol-generating device 10000, the first part 21000 and the second part 22000 can be inserted into the aerosol-generating device 10000, and the third part 23000 and the fourth part 24000 can be exposed to the outside. . As another example, the entire first portion 21000 and part of the second portion 22000 can be inserted into the aerosol generating device 10000 . The user inhales the aerosol while holding the fourth portion 24000 in the mouth. At this time, when the external air passes through the first part 21000 and/or the second part 22000, an aerosol is generated, and the generated aerosol passes through the third part 23000 and the fourth part 24000 and enters the user's mouth. transmitted.

FIG. 5 is a cross-sectional view of a second portion 22000 of an aerosol-generating article 20000 according to one embodiment. Although not shown in FIG. 5, it is covered by the first portion 21000 and the first wrapper 25000, so that the description of the first wrapper 25000 and the second wrapper 26000 described below can be applied to the second portion 22000 alone. can be applied to the first portion 21000 as well.

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 arranged in order from the inside. Tobacco material 100 may be contained in second portion 22000 in the form of cut tobacco, for example.

In some embodiments, the first wrapper 25000 may be cylindrical and wrap the tobacco material 100 . The first wrapper 25000 has a thickness _d1 of about 5-30 μm. Since the first wrapper 25000 has a thickness within the numerical range described above, heat is appropriately transferred to areas of the first portion 21000 and the second portion 22000 that are not directly heated by the device, and the first portion 21000 and the second portion 22000 are heated. Leakage of a liquid component such as a moisturizing agent contained in at least one of them is reduced. Also, the tensile strength of the entire wrapping paper including the first wrapper 25000 and the second wrapper 26000 may be improved.

In an embodiment, the first wrapper 25000 has 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 metal material, the thermal conductivity in the aerosol-generating article 20000 is improved via free electrons, so that the aerosol-generating article 20000 is not directly heated. Areas can be efficiently 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 has a cylindrical shape formed of a metal thin film, for example, the first wrapper 25000 may be cylindrical 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 is efficiently transferred to regions of the first portion 21000 and the second portion 22000 that are not directly heated by the device, and the first portion 21000 and the second portion Leakage of liquid components such as moisturizing agents contained in at least one of 22000 can be reduced.

In an embodiment, second wrapper 26000 has a thickness _d2 of about 30 to about 70 μm. A second wrapper 26000 wraps the entire aerosol-generating article 20000 . For example, the second wrapper 26000 wraps the first wrapper 25000, the third portion 23000, and the fourth portion 24000. FIG. As a result, the first portion 21000 and the second portion 22000 are surrounded by both the first wrapper 25000 and the second wrapper 26000, and the third portion 23000 and the fourth portion 24000 are covered only by the second wrapper 26000. However, the present invention is not necessarily limited thereto.

The second wrapper 26000 may contain cellulose or dextrin. Desirably, the second wrapper 26000 is also a cellulose wrapper.

In an embodiment, the entire paper wrapper including both the first wrapper 25000 and the second wrapper 26000 has a thickness (d ₁ +d ₂ ) of approximately 35-100 μm. By setting the thickness of the entire wrapping paper of the aerosol-generating article 20000 within the numerical range described above, leakage of liquid components such as moisturizing agents to the outside is reduced.

Both the first wrapper 25000 and the second wrapper 26000 have a tensile strength of about 4.5-10 kgf. Since the entire first wrapper 25000 and the second wrapper 26000 have tensile strength within the numerical range described above, different parts of the aerosol-generating article 20000 are not separated from each other during the manufacturing process of the aerosol-generating article 20000 .

FIG. 6 is a diagram illustrating the aerosol-generating article 20000 inserted into the aerosol-generating device 10 according to one embodiment. For convenience of explanation, the third and fourth portions of the aerosol-generating article 20000 shown in FIG. 6 have been omitted.

Another aspect of the present invention provides an aerosol-generating system including an aerosol-generating device 10 that heats at least one of the aerosol-generating article 20000 and the first portion 21000 and the second portion 22000 of the aerosol-generating article 20000 described above. can do.

Referring to FIG. 6 , the aerosol-generating device 10 may include a containment space 12 containing the aerosol-generating article 20000 and a heating element 11 for heating the aerosol-generating article 20000 .

In an embodiment, an aerosol-generating article 20000 is inserted into the containment space 12, and a heating element 11 powered by a battery (not shown) inside the aerosol-generating device 10 heats the first portion 21000 of the aerosol-generating article 20000 and The second portion 22000 can be heated. Specifically, the heating element 11 can heat a portion of the first portion 21000 and a portion of the second portion 22000 of the aerosol-generating article 20000 . For example, as illustrated in FIG. 6, the heating element 11 can heat a portion of the first portion 21000 and a portion of the second portion 22000 . Therefore, the entire first portion 21000 and second portion 22000 are not directly heated.

In an embodiment, the first wrapper 25000 can efficiently transfer heat transferred from the heating element 11 to the first portion 21000 and the second portion 22000 . In particular, the measurement point M of the aerosol-generating article 20000 shown in FIG. 6 is not directly heated because it does not face the heating element 11 . However, according to the present invention, the first wrapper 25000 has excellent thermal conductivity, so that the first wrapper 25000 transfers the heat supplied from the heating element 11 along the length of the aerosol-generating article 20000 to the measuring points. M can be efficiently transmitted. As a result, both the first portion 21000 and the second portion 22000 are uniformly heat-transferred, and the amount of aerosol formed by heating the first portion 21000 and the second portion 22000 and the amount of nicotine transfer can be increased. .

FIG. 7 is a graph of measured temperature changes of the second portion 22000 of the aerosol-generating article 20000 over time according to one embodiment. Specifically, after inserting the aerosol-generating article 20000 into the aerosol-generating device 10 and activating the heating element 11 as shown in FIG.

Referring to FIG. 7, it was confirmed that the aerosol-generating article to which the wrapper was not applied as a comparative example had a slow rate of temperature rise over time, an average temperature of about 140°C, and a maximum temperature of about 170°C. On the other hand, the silver foil trumpet-applied aerosol-generating article as an example has a rapid temperature rise rate over time, an average temperature of about 170°C and a maximum temperature of about 190°C, and is evaluated as having an excellent heat retention effect by the trumpet. rice field.

In addition, as an example, the copper foil wrapper-applied aerosol-generating article has the fastest temperature rise rate over time, an average temperature of about 180 ° C., a maximum temperature of about 190 ° C., and the heat retention effect of the wrapper is the most excellent. I understand.

Thus, in the examples, it was determined that when the aerosol-generating article was used to heat the aerosol-generating article, the second portion had a maximum temperature in the range of about 180°C to about 250°C.

It was also determined in the Examples that when the aerosol-generating article is heated using the aerosol-generating device, the second portion can be maintained at a temperature of about 170° C. or higher from 120 seconds after heating. rice field.

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

- Principle The oil resistance measurement solution is prepared by the method commonly used for analyzing the oil resistance of papers, and after a certain period of time has passed after being applied to the test piece, it is the best solution that does not leave oil stains on the test piece. Judge the oil resistance by the number.

- Apparatus and apparatus As a stock bottle, a stock bottle consisting of a glass stopper to prevent evaporation, a foil lined cap, or the like was used. As a test bottle, a bottle equipped with a dropper or rod that can drop the solution onto the test piece was used.

-Test method

The solution was prepared by mixing castor oil, toluene, and heptane at a ratio determined by kit number as shown in the table above.

The test piece is tested starting with a reagent with a lower kit number, and a drop of the prepared reagent is applied to the test piece for 15 seconds. Check for oil stains.

If no oil stains were found, the experiment was continued while numbering the kit number until oil stains occurred. A Kit Number with no final oil stain was applied to assess oil resistance.

As a result of evaluating the oil resistance of the aerosol-generating article according to the present invention based on the 3M KIT method described above, the first wrapper 25000 according to the example can have an oil resistance of 5 or more based on the 3M KIT method. was confirmed.

FIG. 8 is a photograph showing the degree of liquid leakage of an aerosol-generating article according to one example.

Referring to FIG. 8, it can be seen that the aerosol-generating article to which the wrapper is not applied, as a comparative example, causes a relatively large amount of leakage of the liquid component of the second portion. On the other hand, it can be confirmed that the aerosol-generating article according to the embodiment in which the wrapper is applied has a relatively low leakage of the liquid component of the second portion and is less likely to occur. Therefore, the present invention has the advantage of improving the oil resistance of aerosol-generating articles.

Although not illustrated in the drawings, according to the invention, the first wrapper wraps only the first portion of the aerosol-generating article.

Specifically, the present invention provides a first portion containing an aerosol-generating material, a second portion containing tobacco material, a third portion for cooling airflow passing through the first and second portions, and a filter material. and a fourth portion containing An aerosol-generating article can be provided further comprising a first wrapper wrapping the portion and a second wrapper wrapping the first wrapper, the second portion, the third portion, and the fourth portion.

The same applies to the above-described embodiments. However, since the first wrapper made of a metal material covers only the first portion of the aerosol-generating article, the thermal conductivity of the first portion is improved, and the liquid of the moisturizing agent component such as the aerosol-generating substance contained in the first portion is improved. Leakage can be reduced. In particular, in the case of the aerosol-generating articles according to the examples, since the aerosol-generating substance contained in the first part is contained in a liquid state, the effect of preventing liquid leakage is important. By preventing or reducing liquid leakage from the first portion through the first wrapper, the durability of the aerosol-generating article can be improved and the user can be provided with a favorable smoking experience.

Also according to the invention, the first wrapper may wrap only the second portion of the aerosol-generating article. In such a case, the thermal conductivity of the second portion is improved, and leakage of moisturizing ingredients such as aerosol-generating substances contained in the second portion can be reduced.

At least one of the components, elements, modules or units represented by blocks in FIGS. Exemplary embodiments can be embodied in any number of hardware, software, and/or firmware structures that perform their respective functions. For example, at least one of these components may be a direct circuit structure capable of performing its function through control of one or more microprocessors, such as a memory, processor, logic circuit, lookup table, or other A controller can be used. Also, at least one of these components may be tangibly embodied by a module, program, or portion of code, which includes one or more executable instructions for performing a particular logical function. , is executed by one or more microprocessors or other controllers. Also, at least one of these components may include or be embodied by a processor such as a central processing unit (CPU), microprocessor, or the like that performs their respective functions. Two or more of those components may be combined into one or more single components such that the single component may perform all the operations or functions of the combined two or more components. Also, part of the function of at least one of those components is also performed by other components. Also, although a bus is not shown in the block diagram, communication between components may be accomplished through the bus. Functional aspects of the exemplary embodiments are also embodied by algorithms running on one or more processors. Also, components represented as blocks or process steps may employ any number of related techniques for electronic configuration, signal processing and/or control, data processing, and the like.

The above description of the embodiments is merely exemplary, and various modifications and other equivalent embodiments can be made by those skilled in the art. will be able to understand Therefore, the true protection scope of the invention should be determined by the claims, and all differences in the scope of equivalents of the content of the claims shall be included in the protection scope determined by the claims. must be interpreted as

Claims (9)

In an aerosol-generating article,
a first portion containing an aerosol-generating substance;
a second portion containing tobacco material;
a third portion for cooling airflow passing through the first portion and the second portion;
a fourth portion containing a filter material;
a first wrapper enclosing the first portion and the second portion;
a second wrapper that wraps around the first wrapper, the third portion, and the fourth portion;
the first portion, the second portion, the third portion, and the fourth portion are sequentially aligned with respect to the longitudinal direction of the aerosol-generating article ;
The aerosol-generating article , wherein the first wrapper is formed by a thin metal film . The first wrapper has a thickness of 5 to 30 μm,
2. The aerosol-generating article of claim 1, wherein said second wrapper has a thickness of 30-70 μm. The first wrapper includes at least one of aluminum (Al), copper (Cu), zinc (Zn), gold (Au), silver (Ag), and iron (Fe), and the second wrapper includes 2. The aerosol-generating article of claim 1, comprising cellulose. The first wrapper according to claim 1, wherein the first wrapper has an oil resistance of 5 or more based on the 3M KIT method, and a thermal conductivity of 50 to 500 W·m-1/K-1. aerosol-generating articles. 2. The aerosol-generating article of claim 1, wherein said first wrapper and said second wrapper both have a tensile strength of 4.5-10 kgf. an aerosol-generating article according to claim 1;
an aerosol generating device that heats at least one of the first portion and the second portion of the aerosol generating article. 7. The aerosol-generating system of claim 6, wherein the second portion has a maximum temperature in the range of 180°C to 250°C when the aerosol-generating article is heated using the aerosol-generating device. 7. The aerosol generating system according to claim 6, wherein 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 after 120 seconds have passed after heating. . the first portion has a length of 10-14 mm and the second portion has a length of 10-14 mm;
7. The aerosol generation system of claim 6, wherein the aerosol generator heats both a portion of the first portion and a portion of the second portion.

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