Aerosol-generating article comprising disordered aerosol-generating substrate having coating layer and method of making same

Abstract

The invention discloses an aerosol generating product containing a disordered aerosol generating substrate with a coating layer and a preparation method of the aerosol generating product. The aerosol generating product comprises outer wrapping paper (1), and an aerosol generating substrate (2), a supporting piece (3), a composite cooling filtering piece (4) and an end cavity piece (5) which are positioned in the outer wrapping paper (1), the aerosol generating substrate (2) is mixed tobacco shreds which are arranged disorderly, and each mixed tobacco shred comprises a mixed tobacco shred body and a coating layer wrapping the outer surface of the mixed tobacco shred body. According to the method, the surfaces of the mixed tobacco shreds obtained by mixing the reconstituted tobacco and the natural tobacco raw materials for tobacco shred making are coated, the coating layers on the surfaces of the mixed tobacco shreds can improve the physical strength of the mixed tobacco shreds from multiple aspects, and therefore the problems that the filling amount of the mixed tobacco shreds is difficult to control, the tobacco shred breaking rate is high, and tobacco shred falling is prone to occurring at the end of a tobacco core section are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat-not-burn cigarettes, and in particular to an aerosol-generating product comprising a disordered aerosol-generating matrix having a coating layer and a preparation method thereof. Background Art

[0002] As consumers pay more attention to health issues and demand for personalized experience of cigarette products, the tobacco industry continues to respond to the upgrading of consumer demand and develop various smoking products with tar reduction and harm reduction. Heat-not-burn cigarettes, as a new type of tobacco product, have received extensive attention and research in the tobacco industry in recent years. The core lies in the core segment, which produces aroma and smoke through heating, directly determining the style characteristics and quality of heated cigarettes. Therefore, the molding method of the core segment has become one of the research hotspots.

[0003] At present, in addition to granular heat-not-burn cigarettes, there are two other ways to form the core segments of heated cigarettes: ordered processing and disordered processing. The ordered processing mainly involves preparing reconstituted tobacco leaf slices first, absorbing smoke-generating agents and drying them, and then cutting them into reconstituted tobacco leaf shreds of a certain width and gathering them together to form them. The disordered processing is to mix reconstituted tobacco and natural tobacco raw materials into shreds, absorb smoke-generating agents and dry them, and then use the modified traditional rolling and splicing unit for rolling and splicing. Although the ordered and disordered processing technologies have higher flexibility and adaptability, they also face many technical difficulties.

[0004] First of all, after the mixed tobacco in the disordered processing technology absorbs the smoke-generating agent, its physical strength will be significantly reduced, and the tobacco will become soft. In addition, during the preparation and storage of tobacco, the smoke-generating agent inside the tobacco is also easy to infiltrate the surface of the tobacco, or when the ambient humidity is high, the mixed tobacco is easy to absorb moisture in the air. These problems will cause the physical strength to be significantly reduced and the tobacco to become soft. The reduction in the physical strength of the mixed tobacco will lead to the following problems: 1. It is difficult to control the filling amount of the mixed tobacco. If the filling amount is too small, the tobacco core segment will appear too soft, affecting the smoking experience; if the filling amount is too large, the tobacco will be filled too tightly, increasing the resistance to suction, and also affecting the smoking effect. 2. Due to the low physical strength of the mixed tobacco, the tobacco shredding rate will also increase accordingly, and the problem of falling tobacco at the end of the tobacco core segment is prone to occur. This not only affects the appearance quality of the cigarette, but may also cause the tobacco to scatter during the smoking process, affecting the smoking experience. 3. In addition, the mixed tobacco absorbs moisture in the air, which will also cause the amount of smoke from the mixed tobacco to decrease and increase the smoke temperature.

[0005] Secondly, during the storage and transportation of mixed tobacco in the disordered processing technology, the smoke-generating agent easily seeps onto the surface of the cigarette paper, forming yellow spots. This not only affects the aesthetics of the cigarette, but may also have an adverse effect on the taste of the cigarette. In order to solve this problem, it is usually necessary to set a separate anti-seepage layer on the inside of the cigarette paper, which undoubtedly increases the production cost and process complexity. In addition, during the storage and transportation of mixed tobacco, the internal effective ingredients (such as smoke-generating agents, aroma components, etc.) will also have the problem of volatilization and loss, resulting in a short shelf life and a decrease in quality after being loaded into aerosol-generating products.

[0006] In summary, although the disordered processing technology has certain advantages in the forming of heated cigarette core segments, there are also many technical problems that need to be solved. Therefore, developing a new heated cigarette core segment forming method that can maintain the physical strength of the mixed tobacco and effectively prevent the extravasation of the smoke-generating agent is of great significance for improving the quality and smoking experience of heated cigarettes.

[0007] In order to solve the above problems, the present invention is proposed. Summary of the invention

[0008] In view of the above-mentioned shortcomings, the present invention proposes an aerosol generating product including a disordered aerosol generating matrix with a coating layer and a preparation method thereof, wherein the aerosol generating product includes an outer wrapping paper 1, and an aerosol generating matrix 2, a support member 3, a composite cooling filter member 4 and an end cavity member 5 located in the outer wrapping paper 1; the aerosol generating matrix 2 is a disordered mixed tobacco shreds, and the mixed tobacco shreds include a mixed tobacco shreds main body and a coating layer coated on the outer surface of the mixed tobacco shreds main body. The present invention coats the surface of the mixed tobacco shreds obtained by mixing and shredding reconstituted tobacco leaves and natural tobacco leaves, and the coating layer on the surface of the mixed tobacco shreds can improve the physical strength of the mixed tobacco shreds from multiple aspects, thereby solving the problems of the difficulty in controlling the filling amount of the mixed tobacco shreds, the high tobacco shreds crushing rate, and the easy occurrence of tobacco shreds falling at the end of the core segment.

[0009] The first aspect of the present invention provides an aerosol generating article comprising a disordered aerosol generating substrate having a coating layer, comprising an outer wrapping paper 1, and an aerosol generating substrate 2, a support member 3, a composite cooling filter member 4 and an end cavity member 5 located in the outer wrapping paper 1;

[0010] The composite cooling filter element 4 comprises a hollow cooling element 41 and a filter element 42, and the outer sides of the hollow cooling element 41 and the filter element 42 are wrapped with a molding paper 43; the outer wrapping paper 1 outside the composite cooling filter element 4 and the end cavity element 5 is wrapped with a tipping paper 6;

[0011] The aerosol generating substrate 2 has cigarette paper 21 on the outside;

[0012] The aerosol generating matrix 2 is disorderly arranged mixed shredded tobacco, and the mixed shredded tobacco includes a mixed shredded tobacco main body and a coating layer coated on the outer surface of the mixed shredded tobacco main body.

[0013] Preferably, the end cavity member 5 has one or more cavities;

[0014] When there is one cavity, the cavity is located at the central axis, and when there are multiple cavities, the cavities are dispersed in the end cavity member 5;

[0015] The end cavity member 5 is an acetate fiber bundle tube, a paper tube or a non-woven fabric tube;

[0016] The axial length of the end cavity part 5 is one to two times the diameter of the end cavity part 5 .

[0017] Preferably, the hollow cooling component 41 has ventilation holes penetrating the tipping paper 6 , the outer wrapping paper 1 , the shaping paper 43 and the tube wall of the hollow cooling component 41 .

[0018] Preferably, the hollow cooling element 41 is a hollow acetate fiber bundle tube, a hollow paper tube or a hollow non-woven fabric tube, and the wall thickness of the hollow cooling element 41 is 0.2-1.2 mm.

[0019] The support member 3 of the present invention can be selected from any conventional support member form used for aerosol generating products in the art, and it can be an ordinary tube with a hollow structure, such as a hollow acetate fiber bundle tube, a hollow paper tube or a hollow non-woven fabric tube. It can also be a support member with a grooved corrugated layer as a tube wall. The support member 3 can determine whether to add a flavoring or smoking component according to actual conditions. The flavoring or smoking component can be in the form of directly setting a flavoring material layer or a smoking material layer on the tube wall, or adding a flavoring material or a smoking material in the tube cavity of the support section. Flavoring materials include natural fragrance raw materials and tobacco extracts, and smoking materials include propylene glycol and glycerol.

[0020] The filter element 42 of the present invention is acetate fiber tow.

[0021] Preferably, the material of the coating layer includes ethyl cellulose, shellac and carnauba wax.

[0022] Preferably, the mass of the coating layer accounts for 5-30% of the mass of the mixed tobacco.

[0023] The second aspect of the present invention provides a method for preparing an aerosol-generating article comprising a disordered aerosol-generating substrate having a coating layer according to the first aspect of the present invention, comprising the following steps:

[0024] S1, preparing reconstituted tobacco leaves, and then mixing the reconstituted tobacco leaves with natural tobacco leaves and adding the mixture into a shredder to obtain a mixed shredded tobacco body;

[0025] S2, applying functional additives to the mixed shredded tobacco obtained in step S1, and drying the mixed shredded tobacco; the functional additives include smoke-generating agents, flavors, etc.;

[0026] S3, preparing a coating material mixture;

[0027] S4, placing the mixed shredded tobacco body obtained in step S2 into a coating device, and spraying the coating material mixture obtained in step S3 so that the coating material mixture is evenly attached to the surface of the mixed shredded tobacco body;

[0028] S5, after the coating is completed, the mixed shredded tobacco body with the coating material is dried to solidify the coating layer and tightly adhere to the mixed shredded tobacco body, thereby obtaining the mixed shredded tobacco with the coating layer;

[0029] S6, rolling and compounding, using a cigarette machine to use cigarette paper 21 to make an aerosol generating matrix 2 from the mixed tobacco with a coating layer obtained in step S4, using a compounding machine to use the forming paper 43 to compound the hollow cooling component 41 and the filter component 42 to obtain the composite cooling filter component 4, and then using a compounding machine to use outer wrapping paper 1 to compound the aerosol generating matrix 2, the support component 3, the composite cooling filter component 4 and the end cavity component 5, finally wrap the outer wrapping paper 1 on the outside of the composite cooling filter component 4 and the end cavity component 5 with the tipping paper 6 to obtain an aerosol generating product.

[0030] Preferably, in step S3, the method for preparing the coating material is: adding the main body of the coating material into the solvent and stirring to prepare a coating material mixed solution with a mass concentration of 4-15%;

[0031] The coating material includes but is not limited to ethyl cellulose, shellac, carnauba wax, and the solvent includes alcohols, such as anhydrous ethanol.

[0032] Preferably, in step S4, the coating process is carried out while spraying and stirring for 10-20 minutes.

[0033] Preferably, in step S5, the drying conditions after coating are completed include placing in an oven for drying, or placing in dry air for air drying, the drying conditions in the oven are: placing in an oven at 45-60°C and baking for 10-15 minutes; the dry air air drying conditions are: placing in dry air at 45-60°C and air drying for 5-10 minutes.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. The present invention coats the surface of mixed shredded tobacco obtained by mixing reconstituted tobacco leaves and natural tobacco leaves. The coating layer on the surface of the mixed shredded tobacco can improve the physical strength of the mixed shredded tobacco from three aspects. First, the present invention coats the coating layer after the mixed shredded tobacco absorbs the smoke agent and is dried. The coating layer can improve the physical strength of the mixed shredded tobacco and prevent the mixed shredded tobacco from becoming soft after absorbing the smoke agent. Second, the coating layer prevents the smoke agent (only the smoke agent is used as an example, and also includes flavors, etc.) inside the mixed shredded tobacco body from infiltrating onto the surface of the mixed shredded tobacco. Third, the coating layer can effectively prevent the passage of moisture in the air, isolate the internal mixed shredded tobacco body from the outside world, and effectively reduce the hygroscopicity of the mixed shredded tobacco. The problem of reduced physical strength of the mixed shredded tobacco is avoided from three aspects, thereby solving the problem of difficult control of the filling amount of the mixed shredded tobacco, high shredded tobacco crushing rate, and easy occurrence of shredded tobacco at the end of the cigarette core segment. In addition, the mixed shredded tobacco is prevented from absorbing moisture in the air, and the problem of reduced smoke volume of the mixed shredded tobacco and increased smoke temperature is also avoided.

[0036] 2. The coating layer on the surface of the mixed tobacco of the present invention can prevent the smoke-generating agent in the mixed tobacco from seeping out to the surface of the mixed tobacco, and also avoids the problem of yellow spots caused by the smoke-generating agent seeping out to the cigarette paper. There is no need to set an anti-seepage layer on the cigarette paper, thus reducing the requirements for the cigarette paper.

[0037] 3. The coating layer on the surface of the mixed tobacco of the present invention can also lock the internal components of the mixed tobacco (such as smoke generating agents, aroma components, etc.), thereby preventing the internal components of the mixed tobacco from volatilizing and dissipating during storage.

[0038] 4. The coating material of the present invention is selected from ethyl cellulose. The coating layer formed by the material can not only effectively prevent the passage of moisture, but also has a certain air permeability. Therefore, when the mixed tobacco body is heated to generate aerosol, the aerosol can still smoothly pass through the coating layer and be gradually released, and will not affect the smoke output of the mixed tobacco body itself.

[0039] 5. The amount of coating material used in the present invention and the preparation conditions during the coating process ensure the uniformity of the coating. The amount and uniformity of the coating also have a great influence on the volatility. If the amount of the coating is too large or the coating is uneven, the release of volatile substances may be hindered. However, the appropriate amount and uniformity of the coating can ensure that the volatile substances can pass through the coating smoothly when heated.

[0040] 6. The present invention arranges an end cavity member downstream of the filter member, and the end cavity member extends the distance from the aerosol generating matrix section to the mouth end, so the temperature of the outer surface of the end cavity member is lower than the surface of the filter member, thereby avoiding the problem of the mouth end surface of the aerosol generating product being hot.

[0041] 7. The end cavity of the present invention has a hollow air flow channel inside, which has a small interception of smoke, so the smoke stays in the end cavity for a short time, which prevents the smoke from transferring heat to the outer surface, thereby further avoiding the problem of the mouth end surface of the aerosol generating product being hot. At the same time, since the end cavity has a small interception of smoke, the arrangement of the end cavity downstream of the filter will not significantly increase the inhalation resistance.

[0042] 8. The end cavity member of the present invention is a hollow acetate fiber bundle tube, a hollow paper tube or a hollow non-woven fabric tube. Since the interior thereof is hollow, the material area in contact with the consumer's oral cavity is reduced, thereby alleviating the consumer's safety concerns.

[0043] 9. In terms of preparation method, the present invention first uses a compounding machine to use the molding paper 43 to compound the hollow cooling element 41 and the filter element 42 to obtain the composite cooling filter element 4, and then uses a compounding machine to use the outer wrapping paper 1 to compound the aerosol generating matrix 2, the support element 3, the composite cooling filter element 4 and the end cavity element 5. The present invention can prepare a five-component aerosol generating product without changing the original four-component compounding equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 Schematic diagram of the structure of an aerosol-generating article comprising a disordered aerosol-generating matrix having a coating layer.

[0045] Names of the reference numerals in the description of the drawings: 1-outer wrapping paper, 2-aerosol generating matrix, 3-support member, 4-composite cooling filter member, 5-end cavity member, 6-tip paper;

[0046] 21-cigarette paper, 41-hollow cooling element, 42-filter element, 43-forming paper. DETAILED DESCRIPTION

[0047] The present invention is further described in detail below in conjunction with embodiments.

[0048] Those skilled in the art will appreciate that the following examples are only used to illustrate the present invention and should not be considered to limit the scope of the present invention. If no specific techniques or conditions are specified in the examples, the techniques or conditions described in the literature in the art or the product specifications are used. If the manufacturer of the materials or equipment used is not specified, they are all conventional products that can be purchased.

[0049] Those skilled in the art will appreciate that, unless expressly stated otherwise, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" to another element, it may be directly connected to the other element, or there may be intermediate elements. In addition, the "connection" used herein may include wireless connections.

[0050] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two. The terms "inside", "upper", "lower", etc., indicating positions or state relationships, are based on the positions or state relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operate in a specific position, and therefore cannot be understood as limiting the present invention.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0052] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0053] Example 1

[0054] like Figure 1 As shown, this embodiment provides an aerosol generating product comprising a disordered aerosol generating substrate having a coating layer, which comprises an outer wrapping paper 1, and an aerosol generating substrate 2, a support member 3, a composite cooling filter member 4 and an end cavity member 5 located in the outer wrapping paper 1;

[0055] The composite cooling filter element 4 comprises a hollow cooling element 41 and a filter element 42, and the outer sides of the hollow cooling element 41 and the filter element 42 are wrapped with a molding paper 43; the outer wrapping paper 1 outside the composite cooling filter element 4 and the end cavity element 5 is wrapped with a tipping paper 6;

[0056] The aerosol generating substrate 2 has cigarette paper 21 on the outside;

[0057] The aerosol generating matrix 2 is disorderly arranged mixed shredded tobacco, and the mixed shredded tobacco includes a mixed shredded tobacco main body and a coating layer coated on the outer surface of the mixed shredded tobacco main body.

[0058] Preferably, the end cavity member 5 has one or more cavities;

[0059] When there is one cavity, the cavity is located at the central axis, and when there are multiple cavities, the cavities are dispersed in the end cavity member 5;

[0060] The end cavity member 5 is an acetate fiber bundle tube, a paper tube or a non-woven fabric tube;

[0061] The axial length of the end cavity part 5 is one to two times the diameter of the end cavity part 5 .

[0062] The hollow cooling element 41 is a hollow acetate fiber bundle tube, and the wall thickness of the hollow cooling element 41 is 1.0 mm.

[0063] In this embodiment, the support member 3 is a hollow paper tube.

[0064] The filter element 42 in this embodiment is acetate fiber tow.

[0065] The material of the coating layer includes ethyl cellulose.

[0066] The mass of the coating layer accounts for 10% of the mass of the mixed tobacco.

[0067] The method for preparing an aerosol-generating article comprising a disordered aerosol-generating substrate having a coating layer comprises the following steps:

[0068] S1, preparing reconstituted tobacco leaves, and then mixing the reconstituted tobacco leaves with natural tobacco leaves and adding the mixture into a shredder to obtain a mixed shredded tobacco body;

[0069] S2, applying functional additives to the mixed shredded tobacco obtained in step S1, and drying the mixed shredded tobacco; the functional additives include smoke-generating agents and flavors;

[0070] S3, preparing a coating material mixture;

[0071] S4, placing the mixed shredded tobacco body obtained in step S2 into a coating device, and spraying the coating material mixture obtained in step S3 so that the coating material mixture is evenly attached to the surface of the mixed shredded tobacco body;

[0072] S5, after the coating is completed, the mixed shredded tobacco body with the coating material is dried to solidify the coating layer and tightly adhere to the mixed shredded tobacco body, thereby obtaining the mixed shredded tobacco with the coating layer;

[0073] S6, rolling and compounding, using a cigarette machine to use cigarette paper 21 to make an aerosol generating matrix 2 from the mixed tobacco with a coating layer obtained in step S4, using a compounding machine to use the forming paper 43 to compound the hollow cooling component 41 and the filter component 42 to obtain the composite cooling filter component 4, and then using a compounding machine to use outer wrapping paper 1 to compound the aerosol generating matrix 2, the support component 3, the composite cooling filter component 4 and the end cavity component 5, finally wrap the outer wrapping paper 1 on the outside of the composite cooling filter component 4 and the end cavity component 5 with the tipping paper 6 to obtain an aerosol generating product.

[0074] In step S3, the method for preparing the coating material is: adding the main body of the coating material into the solvent and stirring to prepare a coating material mixed solution with a mass concentration of 5%;

[0075] The coating material mainly comprises ethyl cellulose, and the solvent comprises anhydrous ethanol.

[0076] In step S4, the coating process is carried out while stirring, and the duration is 15 minutes.

[0077] In step S5, after coating is completed, the drying conditions include placing it in an oven for drying, or placing it in dry air for air drying. The drying conditions in the oven are: placing it in an oven at 60°C and baking for 15 minutes; the dry air air drying conditions are: placing it in dry air at 60°C and air drying for 10 minutes.

Claims

1. An aerosol-generating article comprising a disordered aerosol-generating substrate having a coating layer, characterized in that It comprises an outer wrapping paper (1), and an aerosol generating matrix (2), a supporting member (3), a composite cooling filter member (4) and an end cavity member (5) located inside the outer wrapping paper (1); The composite cooling filter element (4) comprises a hollow cooling element (41) and a filter element (42), wherein the outer sides of the hollow cooling element (41) and the filter element (42) are wrapped with molding paper (43); the outer wrapping paper (1) on the outer sides of the composite cooling filter element (4) and the end cavity element (5) is wrapped with tipping paper (6); The aerosol generating substrate (2) has cigarette paper (21) on the outside; The aerosol generating matrix (2) is randomly arranged mixed shredded tobacco, and the mixed shredded tobacco comprises a mixed shredded tobacco main body and a coating layer coated on the outer surface of the mixed shredded tobacco main body.

2. An aerosol-generating article comprising a disordered aerosol-generating substrate having a coating layer according to claim 1, characterized in that The end cavity member (5) has one or more cavities; When there is one cavity, the cavity is located at the central axis; when there are multiple cavities, the cavities are dispersed in the end cavity member (5); The end cavity member (5) is an acetate fiber bundle tube, a paper tube or a non-woven fabric tube; The axial length of the end cavity part (5) is one to two times the diameter of the end cavity part (5).

3. An aerosol-generating article comprising a disordered aerosol-generating substrate having a coating layer according to claim 1, characterized in that The hollow cooling element (41) has a ventilation hole which penetrates the tipping paper (6), the outer wrapping paper (1), the shaping paper (43) and the tube wall of the hollow cooling element (41).

4. An aerosol-generating article comprising a disordered aerosol-generating substrate having a coating layer according to claim 1, characterized in that The hollow cooling element (41) is a hollow acetate fiber bundle tube, a hollow paper tube or a hollow non-woven fabric tube, and the wall thickness of the hollow cooling element (41) is 0.2-1.2 mm.

5. An aerosol-generating article comprising a disordered aerosol-generating substrate having a coating layer according to claim 1, characterized in that The materials of the coating layer include ethyl cellulose, shellac and carnauba wax.

6. An aerosol-generating article comprising a disordered aerosol-generating substrate having a coating layer according to claim 1, characterized in that The mass of the coating layer accounts for 5-30% of the mass of the mixed tobacco.

7. A method for preparing an aerosol-generating article comprising a disordered aerosol-generating substrate having a coating layer as claimed in any one of claims 1 to 6, characterized in that: It includes the following steps: S1, preparing reconstituted tobacco leaves, and then mixing the reconstituted tobacco leaves with natural tobacco leaves and adding the mixture into a shredder to obtain a mixed shredded tobacco body; S2, applying a functional additive to the mixed shredded tobacco obtained in step S1, and drying the mixed shredded tobacco; S3, preparing a coating material mixture; S4, placing the mixed shredded tobacco body obtained in step S2 into a coating device, and spraying the coating material mixture obtained in step S3 so that the coating material mixture is evenly attached to the surface of the mixed shredded tobacco body; S5, after the coating is completed, the mixed shredded tobacco body with the coating material is dried to solidify the coating layer and tightly adhere to the mixed shredded tobacco body, thereby obtaining the mixed shredded tobacco with the coating layer; S6, rolling and compounding, using a cigarette machine to use cigarette paper (21) to make an aerosol generating matrix (2) from the mixed tobacco with a coating layer obtained in step S4, using a compounding machine to use the shaping paper (43) to compound the hollow cooling element (41) and the filter element (42) to obtain the composite cooling filter element (4), then using a compounding machine to use outer wrapping paper (1) to compound the aerosol generating matrix (2), the support element (3), the composite cooling filter element (4) and the end cavity element (5), finally wrapping the outer wrapping paper (1) on the outside of the composite cooling filter element (4) and the end cavity element (5) with tipping paper (6) to obtain an aerosol generating product.

8. The preparation method according to claim 7, characterized in that: In step S3, the method for preparing the coating material is: adding the main body of the coating material into the solvent and stirring to prepare a coating material mixed solution with a mass concentration of 4-15%; The coating material includes but is not limited to ethyl cellulose, shellac, carnauba wax, and the solvent includes alcohols, such as anhydrous ethanol.

9. The preparation method according to claim 7, characterized in that: In step S4, the coating process is carried out while stirring, and the duration is 10-20 minutes.

10. The preparation method according to claim 7, characterized in that: In step S5, after coating is completed, the drying conditions include placing it in an oven for drying, or placing it in dry air for air drying. The drying conditions in the oven are: placing it in an oven at 45-60°C and baking for 10-15 minutes; the dry air air drying conditions are: placing it in dry air at 45-60°C and air drying for 5-10 minutes.

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