Aerosol-generating article

Abstract

The utility model provides an aerosol generating product, and relates to the technical field of aerosol generation. According to the aerosol generating product, the functional material is attached to the film forming material to prepare the functional membrane, the functional membrane is covered on the base material layer to prepare the wrapping piece, it is ensured that the functional membrane is in direct contact with the fuming part and / or can be heated by aerosol, the manufacturing work of the functional membrane and the manufacturing work of the fuming part can be carried out at the same time, the step of spraying fragrance and storing filaments is omitted, and the production efficiency is improved. The process is simplified and time is saved; according to the aerosol generating product, the functional materials are prepared into the solid gel-shaped functional membrane, more functional materials can be added, liquid seepage and liquid leakage are not prone to occurring at the normal temperature, the form and system are more stable, the functions of fragrance locking and slow release are achieved, the problem of fragrance attenuation can be solved, the shelf life is prolonged, liquid seepage and liquid leakage are prevented, and large-scale sample preparation is facilitated; the aerosol generating product is used for the particle type smoke cartridge, and the gram weight of the smoke cartridge can be conveniently controlled, so that the cost is reduced.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, and more particularly to an aerosol generation product. Background Technology

[0002] Heated tobacco products (HTMPs) bake tobacco cartridges at low temperatures, controlling the heating temperature to produce smoke without combustion. This effectively reduces harmful substances like tar produced by traditional cigarette combustion. To meet the diverse flavor demands of tobacco cartridges, related technologies add flavorings to the smoke-generating section of the aerosol product. However, due to the limitations of baking temperatures, too little flavoring will result in insufficient aroma development; while excessive flavoring can lead to leakage from the smoke-generating section and rapid aroma decay, shortening shelf life. Utility Model Content

[0003] The purpose of this application is to provide an aerosol-generated product that addresses the problems of easy leakage of fragrance, rapid aroma decay, and short shelf life in aerosol-generated products.

[0004] To achieve the above objectives, this application provides an aerosol generating article, including a wrapping component surrounding the outer periphery of the aerosol generating article, and a smoke-generating portion disposed within the wrapping component; the wrapping component includes a substrate layer and a functional membrane attached to at least a portion of the inner surface of the substrate layer, the functional membrane including a film-forming material and a functional material attached to the film-forming material; the functional membrane is in contact with the smoke-generating portion, and / or the functional membrane can be heated by the aerosol generated by the smoke-generating portion to release the functional material.

[0005] In some embodiments, the functional membrane is disposed on the substrate layer on the outer peripheral surface of the smoke-generating part.

[0006] In some embodiments, the aerosol generating article further includes a cooling section and a filter section disposed within the package;

[0007] The functional membrane is disposed on the substrate layer of the outer peripheral surface of at least one of the filter section, the cooling section, and the smoke-generating section.

[0008] In some embodiments, the functional membrane is disposed on the substrate layer of the outer peripheral surface of the smoke-generating part and the filter segment; the functional material of the functional membrane covering the outer peripheral surface of the smoke-generating part includes a smoke-generating agent, and the functional material of the functional membrane covering the outer peripheral surface of the filter segment does not include a smoke-generating agent.

[0009] In some embodiments, the functional material disposed in the functional membrane on the outer peripheral surface of the smoke-generating part includes one of a smoke-generating agent, a flavoring agent, a sweetener, and a cooling agent;

[0010] The functional material disposed in the functional membrane on the outer peripheral surface of the filter section includes one of flavoring, sweetener, and cooling agent.

[0011] In some embodiments, the substrate layer includes a plurality of substrate layers, the plurality of substrate layers including a first substrate layer covering the outer peripheral surface of the smoke-generating part, a second substrate layer covering the outer peripheral surface of the filter segment, and a third substrate layer joining the smoke-generating part and the filter segment;

[0012] The first substrate layer, the second substrate layer, and the third substrate layer are all provided with the functional film on the outer periphery of the cooling section.

[0013] In some embodiments, the functional material of the functional film covering the first substrate layer includes a smoke generator;

[0014] The functional material of the functional film coated on the second substrate layer includes one of a flavoring, a sweetener, and a cooling agent;

[0015] The functional material of the functional film covering the third substrate layer includes one of flavoring, sweetener, and cooling agent, and is different from the functional material covering the second substrate layer.

[0016] In some embodiments, the functional membrane is solid at room temperature; when the smoke-generating part is heated to generate smoke, the functional membrane located on the outer peripheral surface of the smoke-generating part can melt.

[0017] In some embodiments, the film-forming material includes guar gum, xanthan gum, tamarind gum, carrageenan, gelatin, gum arabic, agar, alginate, carboxymethyl cellulose, polyvinyl alcohol, polyvinylamine, or polyvinylpyrrolidone.

[0018] In some embodiments, the functional membrane has a tensile strength ≥ 7.7 MPa, and / or a film thickness of 100 ± 5 μm, and / or a basis weight of 24-28 g / m³ after film formation. 3 .

[0019] Compared with related technologies, the beneficial effects of this application include:

[0020] The aerosol-generating product provided in this application attaches functional materials to a film-forming material to form a functional membrane. The functional membrane is then coated onto a substrate layer to form a package, ensuring that the functional membrane directly contacts the smoke-generating part and / or can be heated by the aerosol. The fabrication of the functional membrane and the smoke-generating part can be carried out simultaneously, eliminating the step of aroma spraying and fiber storage, simplifying the process and saving time. The aerosol-generating product of this application prepares functional materials into a solid gel-like functional membrane, which allows for the addition of more functional materials. It is also less prone to leakage at room temperature, has a more stable morphology and system, and possesses aroma-locking and slow-release functions. This can improve the aroma decay problem, extend shelf life, prevent leakage, and facilitate large-scale sample preparation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation on the scope of this application.

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the aerosol-generating article of this application;

[0023] Figure 2 This is a cross-sectional schematic diagram of the smoke-generating section of an embodiment of the aerosol-generating article of this application;

[0024] Figure 3 This is a plan view of the package after it has been unfolded according to this application;

[0025] Figure 4 This is a three-dimensional structural diagram of the package in this application;

[0026] Figure 5 This is a schematic diagram of another embodiment of the aerosol-generating article of this application;

[0027] Figure 6 This is a schematic diagram of another embodiment of the aerosol-generating article of this application.

[0028] Figure label:

[0029] 100 - Aerosol generating product; 10 - Package; 12 - Substrate layer; 121 - First substrate layer; 122 - Second substrate layer; 123 - Third substrate layer; 14 - Functional membrane; 20 - Smoke generating section; 30 - Cooling section; 40 - Filter section. Detailed Implementation

[0030] As used in this article:

[0031] "Prepared from" is synonymous with "comprising". The terms "comprising", "including", "having", "containing", or any other variations thereof as used herein are intended to cover non-exclusive inclusion. For example, a composition, step, method, article, or apparatus that includes the listed elements is not necessarily limited to those elements, but may include other elements not expressly listed or elements inherent to such composition, step, method, article, or apparatus.

[0032] The conjunction "composed of..." excludes any unspecified elements, steps, or components. If used in a claim, this phrase makes the claim closed, excluding materials other than those described, except for associated conventional impurities. When the phrase "composed of..." appears in a clause of the body of a claim rather than immediately following it, it limits only the elements described in that clause; other elements are not excluded from the claim as a whole.

[0033] When a quantity, concentration, or other value or parameter is expressed as a range, a preferred range, or a range defined by a series of upper and lower preferred values, this should be understood as specifically disclosing all ranges formed by any pair of any upper or preferred value with any lower or preferred value, regardless of whether the range is disclosed individually. For example, when the range “1–5” is disclosed, the described range should be interpreted as including ranges “1–4”, “1–3”, “1–2”, “1–2 and 4–5”, “1–3 and 5”, etc. When numerical ranges are described herein, unless otherwise stated, the range is intended to include its endpoints and all integers and fractions within that range.

[0034] In these embodiments, unless otherwise specified, the portions and percentages are all by weight.

[0035] "Parts by mass" refers to the basic unit of measurement that expresses the mass ratio of multiple components. One part can represent any unit mass, such as 1g or 2.689g. If we say that component A has "a" parts by mass and component B has "b" parts by mass, it means the ratio of the mass of component A to the mass of component B is a:b. Alternatively, it can mean that the mass of component A is aK and the mass of component B is bK (K is any number representing a multiplier). It is important to understand that, unlike the number of parts by mass, the sum of the mass parts of all components is not limited to 100 parts.

[0036] "And / or" is used to indicate that one or both of the described situations may occur, for example, A and / or B includes (A and B) and (A or B).

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] To meet the demand for multi-flavored e-cigarette cartridges, flavorings are often added. This is typically done by spraying the flavoring solution directly onto the vapor-generating part. However, due to temperature limitations (usually below 350℃), when the amount of flavoring added is small, the characteristic aroma is not well developed; while when the amount of flavoring added is large, leakage problems easily occur in the vapor-generating part. At the same time, liquid flavorings are also easily volatile. Therefore, after the aerosol-generated product is prepared, the leakage problem combined with the volatility problem causes the aroma of the e-cigarette cartridge to decay rapidly, resulting in a shortened shelf life.

[0039] To address the aforementioned technical issues, related technologies involve adding popping beads to the filter rod section. However, due to the limited circumference diameter of the filter rod, the particle size of the popping beads that can be added is relatively limited, resulting in a smaller amount of encapsulated flavorings and fragrances. Consequently, only the aroma characteristics of the first 2-4 puffs can be provided, and the number of sustained puffs is insufficient.

[0040] To solve the above-mentioned technical problems, this application provides an aerosol generating article 100. Please refer to [link / reference]. Figure 1 , Figure 5 and Figure 6 The aerosol generating article 100 includes a wrapping member 10 covering the outer peripheral surface of the aerosol generating article 100, and a smoke generating part 20 disposed within the wrapping member 10; the wrapping member 10 includes a substrate layer 12 and a functional membrane 14 attached to at least a portion of the inner surface of the substrate layer 12, the functional membrane 14 includes a film-forming material and a functional material attached to the film-forming material, the functional membrane 14 is in contact with the smoke generating part 20, and / or the functional membrane 14 can be heated by the aerosol generated by the smoke generating part 20 to release the functional material.

[0041] In some embodiments, the smoke-generating part 20 includes a core material, which may be tobacco raw material, non-tobacco plant material, or fiber paper substrate adsorbed with a smoke-generating agent, etc. The core material may be in the form of granules, pulp, filaments, or sheets.

[0042] In some embodiments, the substrate layer 12 in the package 10 can be a paper tube, aluminum foil tube, aluminum foil paper tube, ceramic tube, silicone rubber tube, heat-resistant resin tube, etc.

[0043] In some embodiments, the functional film 14 includes a film-forming material and functional materials attached to the film-forming material. The functional materials may be, for example, smoke-generating agents, fragrances, sweeteners, cooling agents, etc., and can be added according to different needs. The film-forming material may be a material that is solid at room temperature but melts into a liquid state under certain heating conditions, and its shape is prepared as a film sheet matching the substrate layer 12, capable of being coated onto the substrate layer 12. The functional film 14 is a solid film at room temperature and releases aroma when heated.

[0044] In some embodiments, the film-forming material may be at least one of guar gum, xanthan gum, tamarind gum, carrageenan, gelatin, gum arabic, agar, alginate, carboxymethyl cellulose, polyvinyl alcohol, polyvinylamine, and polyvinylpyrrolidone.

[0045] In some embodiments, please refer to Figure 1 and Figure 2 The functional membrane 14 is disposed on the substrate layer 12 on the outer peripheral surface of the smoke-generating part 20. The functional membrane 14 is in direct contact with the smoke-generating part 20. When the smoke-generating part 20 is heated and produces smoke, the functional membrane 14 on its outer peripheral surface can melt. The heating temperature of the smoke-generating part 20 is between 200℃ and 350℃. The functional membrane 14 disposed on the smoke-generating part 20 will melt and vaporize after heating. Therefore, a high-boiling-point, high-temperature-resistant functional material can be selected to manufacture the functional membrane 14, allowing it to release its aroma to the maximum extent when the smoke-generating part 20 is heated, preventing it from melting instantly and failing to continuously provide aroma. Furthermore, the added film-forming material will also melt into the aerosol; therefore, the functional membrane 14 must not contain any impurities.

[0046] In some embodiments, please refer to Figure 1 , Figure 5 and Figure 6 The aerosol generating product 100 also includes a cooling section 30 and a filter section 40 disposed within the package 10;

[0047] The functional membrane 14 is disposed on the substrate layer 12 of the outer peripheral surface of at least one of the filter section 40, cooling section 30, and smoke generating section 20.

[0048] like Figure 1 The diagram shows the case where the functional diaphragm 14 is disposed on the substrate layer 12 on the outer peripheral surface of the smoke-generating part 20. Alternatively, the functional diaphragm 14 can be disposed only on the substrate layer 12 surrounding the smoke-generating part 20, in which case the functional diaphragm 14 is in contact with the smoke-generating part 20; Figure 5 The diagram shows the case where the functional diaphragm 14 is disposed on the substrate layer 12 on the outer peripheral surface of the filter section 40. Alternatively, the functional diaphragm 14 can be disposed only on the substrate layer 12 surrounding the filter section 40. In this case, the functional diaphragm 14 can be heated by the aerosol generated by the smoke-generating section 20 to release functional materials; Figure 6The diagram shows the case where the functional membrane 14 is disposed on the substrate layer 12 on the outer peripheral surface of the smoke-generating section 20 and the filter section 40. The functional membrane 14 can be disposed on the substrate layer 12 that surrounds the smoke-generating section 20 and the filter section 40. In this case, the functional membrane 14 is in contact with the smoke-generating section 20, and the functional membrane 14 can be heated by the aerosol generated by the smoke-generating section 20 to release the functional material. Of course, the functional membrane 14 can also be disposed on the substrate layer 12 on the outer peripheral surface of the cooling section 30.

[0049] In some embodiments, the cooling section 30 provides space for aerosol mixing and cooling, cooling the aerosol generated by the smoke-generating section 20 to meet the suction requirements. The cooling section 30 can be an empty tube or other tubular element with holes or grooves.

[0050] In some embodiments, the filter section 40 is used to filter aerosols and further cool or filter and adsorb harmful substances. The filter section 40 may be a cellulose acetate rod, a polypropylene rod, a polylactic acid rod, or a paper filter rod.

[0051] In some embodiments, please refer to Figure 3 and Figure 4 The functional diaphragm 14 in the package 10 is attached to at least a portion of the inner surface of the substrate layer 12. For example, the functional diaphragm 14 may be provided only at the location where it covers the smoke-generating section 20, only at the location where it covers the cooling section 30, only at the location where it covers the filter section 40, or at the location where it covers any two of the smoke-generating section 20, cooling section 30, and filter section 40, or at the location where it covers all three sections simultaneously, etc. The functional diaphragm 14 may be distributed on a portion or the entire inner surface of the substrate layer 12 covering the smoke-generating section 20 and / or the cooling section 30 and / or the filter section 40.

[0052] In some embodiments, when the functional membrane 14 is not in direct contact with the smoke-generating section 20, but is disposed in the cooling section 30 and the filter section 40, the functional membrane 14 does not melt during use of the aerosol generating product 100. Melting would contaminate the filter and affect the suction. The temperature of the aerosol passing through the filter section 40 is 30-50°C. It is only necessary to carry out the aroma through the filter section 40. Therefore, it is necessary to select a low-boiling-point functional material, such as a low-carbon ester fragrance, so that at least 60% of the aroma can be volatilized at 30-50°C. The film-forming material is selected with a good desorption property and a film-forming agent. The film-forming material will not melt and the requirements for impurities are also lower.

[0053] In the production process of related e-cigarette cartridges, a process of adding the core material first and then adding flavoring is usually adopted. The flavoring is determined according to the type and characteristics of the e-cigarette cartridge product. Generally, one flavoring is only suitable for a specific aerosol-generating product. The second step of adding flavoring requires adding the core material after it has been prepared and then spraying the flavoring, and it needs to be left for a period of time for penetration and adsorption. The aerosol-generating product 100 provided in this application attaches functional materials to a film-forming material to form a functional membrane 14. The functional membrane 14 is coated on the substrate layer 12 to form a package 10, ensuring that the functional membrane 14 directly contacts the smoke-generating part 20 and / or can be heated by the aerosol generated by the smoke-generating part 20 to release the functional materials. The production of the functional membrane 14 can be carried out simultaneously with the production of the core material and the smoke-generating part 20, eliminating the step of spraying flavoring and storing the tobacco, simplifying the process and saving time.

[0054] The aerosol generating product 100 provided in this application prepares functional materials into a solid gel-like functional film 14, which can add more functional materials and is not prone to leakage at room temperature. Its morphology and system are more stable and have the functions of locking fragrance and slow release. It can improve the problem of fragrance decay, extend shelf life, prevent leakage, and facilitate large-scale sample preparation.

[0055] In related technologies, granular tobacco cartridges are filled with a fixed volume. For the same flavor, the same volume results in the same weight. However, for different flavors, due to differences in the type, amount, and bulk density of flavorings, the weight varies even with the same volume. The aerosol-generating product 100 of this application is used for granular tobacco cartridges, uniformly specifying the gram weight and dimensions of the functional membrane 14. This ensures consistent weight for tobacco granules of the same volume, facilitating weight control for different flavors and thus reducing costs.

[0056] In some embodiments, please refer to Figure 6 A functional membrane 14 is provided on the substrate layer 12 on the outer peripheral surface of the smoke-generating part 20 and the filter section 40; the functional material of the functional membrane 14 covering the outer peripheral surface of the smoke-generating part 20 includes a smoke-generating agent, while the functional material of the functional membrane 14 covering the outer peripheral surface of the filter section 40 does not include a smoke-generating agent.

[0057] The functional membrane 14 covering the outer peripheral surface of the filter section 40 can be filled with flavorings, sweeteners, and cooling agents to improve the taste from the filter section 40. The functional membrane 14 covering the outer peripheral surface of the smoke-generating section 20 can be filled with smoke-generating agents, flavorings, sweeteners, and cooling agents to supplement the aroma and smoke.

[0058] In some embodiments, the functional material in the functional membrane 14 disposed on the outer peripheral surface of the smoke-generating section 20 can be at least one of a smoke-generating agent, a flavoring agent, a sweetener, and a cooling agent;

[0059] The functional material in the functional membrane 14 disposed on the outer peripheral surface of the filter section 40 can be at least one of flavoring, sweetener, and cooling agent.

[0060] In some embodiments, please continue reading Figure 6 The substrate layer 12 includes a plurality of substrate layers 12, including a first substrate layer 121 that wraps around the outer peripheral surface of the smoke-generating part 20, a second substrate layer 122 that wraps around the outer peripheral surface of the filter section 40, and a third substrate layer 123 that joins the smoke-generating part 20 and the filter section 40.

[0061] Functional membranes 14 are provided on the portions of the first substrate layer 121, the second substrate layer 122, and the third substrate layer 123 located on the outer periphery of the cooling section 40.

[0062] In some embodiments, the first substrate layer 121 may be cigarette paper, the second substrate layer 122 may be forming paper, and the third substrate layer 123 may be tipping paper / cork paper, etc.

[0063] In some embodiments, the functional material of the functional film 14 covering the first substrate layer 121 includes a smoke generator;

[0064] The functional material of the functional film 14 covering the second substrate layer 122 includes at least one of a flavoring, sweetener, and cooling agent;

[0065] The functional material of the functional film 14 covered by the third substrate layer 123 includes at least one of flavoring, sweetener, and cooling agent, and is different from the functional material covered by the second substrate layer 122.

[0066] By setting functional membranes 14 in the smoke-generating section 20, the cooling section 30 and the filter section 40, and each functional membrane 14 has a different functional material, a synergistic effect can be achieved, which can increase the amount of aerosol generated in the aerosol product 100, increase the aroma and adjust the taste.

[0067] This application also provides a method for preparing an aerosol-generating article, used to prepare the above-mentioned aerosol-generating article 100, comprising:

[0068] A functional membrane 14 is prepared and attached to a substrate 12 to obtain a package 10.

[0069] The aerosol generating product 100 is obtained by wrapping the smoke-generating part 20 with the package 10.

[0070] In some embodiments, the method for preparing the functional membrane includes:

[0071] The molten film-forming material is mixed with the functional material to obtain a mixed solution;

[0072] The mixed solution is prepared into a thin film and dried to obtain the functional membrane.

[0073] In some embodiments, the film-forming material may be at least one selected from guar gum, xanthan gum, tamarind gum, carrageenan, gelatin, gum arabic, agar, alginate, carboxymethyl cellulose, polyvinyl alcohol, polyvinylamine, and polyvinylpyrrolidone. The film-forming material exhibits good heat resistance, salt resistance, acid resistance, freeze-thaw resistance, and has stabilizing, emulsifying, thickening, coagulating, water-retaining, and film-forming properties. Its aqueous solution has strong viscosity, which is not affected by acids or salts. The functional material may be at least one selected from smoke-generating agents, flavorings, sweeteners, and cooling agents.

[0074] In some embodiments, the prepared mixed solution has a viscosity in the range of 9500±2500 mPa·s before film formation, maintaining the stability of the functional material, improving its solubility, and reducing the release rate. The functional membrane after film formation has a tensile strength ≥7.7 MPa, a film thickness of 100±5 μm, and a basis weight of 24-28 g / m³. 3 It is a film at room temperature, and the functional materials are released when heated. The film has a certain degree of extensibility and toughness, and can be coated on the substrate layer without cracking or desorption.

[0075] There are two common methods for preparing thin films: casting and hot melt extrusion. Casting involves uniformly pouring the mixed solution into a mold of suitable size, allowing it to dry under appropriate environmental conditions until the film solidifies, and then rolling it up. Hot melt extrusion involves melting the mixed solution and extruding it through a mold to form a film, which is then rolled up.

[0076] The prepared film is dried under appropriate conditions to remove its internal moisture. Double-sided drying ensures uniform moisture content. It is then cut into equal-sized sheets according to required size and weight to obtain functional films, which are then laminated onto the substrate layer.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0078] Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the foregoing claims, any of the claimed embodiments can be used in any combination. The information disclosed in this background section is intended only to enhance the understanding of the general background of this application and should not be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art.

Claims

1. An aerosol-generating article, characterized in that, The aerosol generating article comprises a wrapping member wrapped around the outer surface of the aerosol generating article, and a smoking portion arranged in the wrapping member; the wrapping member comprises a substrate layer and a functional film attached to at least part of the inner surface of the substrate layer, and the functional film comprises a film-forming material and a functional material attached to the film-forming material; the functional film is in contact with the smoking portion, and / or the functional film can be heated by the aerosol generated by the smoking portion to release the functional material.

2. An aerosol-generating article according to claim 1, wherein, The functional film is arranged on the substrate layer of the outer surface of the smoking portion.

3. An aerosol-generating article according to claim 1, wherein, The aerosol generating article further comprises a cooling segment and a filter segment arranged in the wrapping member. The functional film is arranged on the substrate layer of the outer surface of at least one of the smoking portion, the filter segment and the cooling segment.

4. An aerosol-generating article according to claim 3, wherein, The functional film is arranged on the substrate layer of the outer surface of the smoking portion and the filter segment; the functional material of the functional film arranged on the outer surface of the smoking portion comprises a smoking agent, and the functional material of the functional film arranged on the outer surface of the filter segment does not comprise a smoking agent.

5. An aerosol-generating article according to claim 3, wherein, The functional material in the functional film arranged on the outer surface of the smoking portion comprises one of a smoking agent, a flavoring agent, a sweetening agent and a cooling agent. The functional material in the functional film arranged on the outer surface of the filter segment comprises one of a flavoring agent, a sweetening agent and a cooling agent.

6. An aerosol-generating article according to claim 4, wherein, The substrate layer comprises a plurality of substrate layers, which comprise a first substrate layer wrapped around the outer surface of the smoking portion, a second substrate layer wrapped around the outer surface of the filter segment, and a third substrate layer connecting the smoking portion and the filter segment. The functional film is arranged on the substrate layer of the outer surface of the first substrate layer, the second substrate layer and the third substrate layer.

7. An aerosol-generating article according to claim 6, wherein, The functional material of the functional film arranged on the first substrate layer comprises a smoking agent. The functional material of the functional film arranged on the second substrate layer comprises one of a flavoring agent, a sweetening agent and a cooling agent. The functional material of the functional film arranged on the third substrate layer comprises one of a flavoring agent, a sweetening agent and a cooling agent, and is different from the functional material arranged on the second substrate layer.

8. An aerosol-generating article according to any one of claims 1 to 7, wherein, The functional film is in a solid state at room temperature, and can be melted when the smoking portion is heated to generate smoke.

9. The aerosol-generating article according to claim 1, wherein, The film-forming material comprises guar gum, xanthan gum, tamarind polysaccharide gum, carrageenan, gelatin, gum arabic, agar, alginic acid, carboxymethyl cellulose, polyvinyl alcohol, polyvinyl amine or polyvinyl pyrrolidone.

10. An aerosol-generating article according to claim 1, wherein, The functional film has a tensile strength ≥ 7.7 MPa, and / or a film thickness of 100 ± 5 μm, and / or a grammage after film formation of 24-28 g / m 3 .

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