Aerosol-generating article comprising ordered aerosol-generating substrate having coating layer

Abstract

The utility model discloses an aerosol generating product containing an ordered aerosol generating substrate with a coating layer. The aerosol generating product comprises outer wrapping paper (1), and an aerosol generating substrate (2), a supporting piece (3), a composite cooling filter piece (4) and an end cavity piece (5) which are positioned in the outer wrapping paper (1), the aerosol generating matrix (2) is reconstituted tobacco shreds arranged in order, and each reconstituted tobacco shred comprises a reconstituted tobacco shred body and a coating layer wrapping the outer surface of the reconstituted tobacco shred body. According to the utility model, the surface of the reconstituted tobacco is coated, and the coating layer on the surface of the reconstituted tobacco can improve the physical strength of the reconstituted shredded tobacco from multiple aspects, so that the problems that the filling amount of the reconstituted shredded tobacco is difficult to control, the reconstituted shredded tobacco is sticky after absorbing moisture, the stiffness becomes low, and the ordered tobacco core rod becomes soft are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat-not-burn cigarettes, in particular to an aerosol-generating product comprising an ordered aerosol-generating matrix with a coating layer. Background Art

[0002] As consumers become more aware of health issues and demand a personalized experience in cigarettes, the tobacco industry has continuously responded to these evolving needs by developing a variety of smoking products with reduced tar content and harm reduction. Heat-not-burn (HTB) cigarettes, as a new tobacco product, have garnered extensive attention and research within the industry in recent years. The core of these products lies in the tobacco core segment, which, through heating, produces aroma and smoke, directly determining the style, characteristics, and quality of HNB cigarettes. Consequently, the shaping method of the tobacco core segment has become a hot topic of research.

[0003] Currently, in addition to pellet-type heat-not-burn cigarettes, there are two other methods for forming the core segments of heated cigarettes: a sequential process and a random process. The sequential process primarily involves preparing thin sheets of reconstituted tobacco leaves, extracting a smoke-generating agent, and drying them before cutting them into reconstituted tobacco shreds of a certain width and gathering them together to form the shredded tobacco. The random process involves mixing reconstituted tobacco and natural tobacco leaves, producing shredded tobacco leaves, extracting a smoke-generating agent, and drying them before rolling them using a modified traditional rolling and splicing machine. While both sequential and random processes offer greater flexibility and adaptability, they also present numerous technical challenges.

[0004] First, the physical strength of the reconstituted tobacco leaf sheets in the orderly processing technology will be significantly reduced after absorbing the smoke-generating agent, and the reconstituted tobacco leaf sheets will become soft. In addition, during the preparation and storage of the reconstituted tobacco leaf sheets, the smoke-generating agent inside the reconstituted tobacco leaf sheets is also easy to seep out to the surface of the reconstituted tobacco leaf sheets, or when the ambient humidity is high, the reconstituted tobacco leaf sheets are easy to absorb moisture in the air. These problems will cause the physical strength to be significantly reduced and the reconstituted tobacco leaf sheets to become soft. The reduction in the physical strength of the reconstituted tobacco leaf sheets will make it difficult to control the filling amount of the reconstituted tobacco leaf shreds after subsequent shredding. 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 shreds will be filled too tightly, increasing the inhalation resistance, which also affects the smoking effect. Under the condition of quantitative weight, the stiffness of the tobacco core rod is poor.

[0005] Secondly, the smoke-generating agent inside the reconstituted tobacco shreds seeps out onto the surface of the reconstituted tobacco shreds, or in high humidity, the reconstituted tobacco shreds absorb moisture from the air. This can cause the surface of the reconstituted tobacco shreds to become damp, leading to adhesion between the shreds and affecting the orderly gathering process. Furthermore, the absorption of moisture from the air by the reconstituted tobacco shreds can also lead to a decrease in the amount of smoke produced and an increase in smoke temperature.

[0006] Finally, during the storage and transportation of reconstituted tobacco shreds, 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 reconstituted tobacco shreds, the internal effective ingredients (such as smoke-generating agents, aroma components, etc.) will also be volatilized and lost, resulting in a short shelf life and a decrease in quality after being loaded into aerosol-generating products.

[0007] Therefore, developing a new method for forming heated cigarette core segments that can maintain the stability of the physical strength of reconstituted tobacco shreds and effectively prevent the extravasation of smoke-generating agents is of great significance for improving the quality and smoking experience of heated cigarettes.

[0008] In order to solve the above problems, the present utility model is proposed. Utility Model Content

[0009] In response to the above-mentioned shortcomings, the present invention proposes an aerosol-generating product comprising an ordered aerosol-generating matrix with a coating layer and a preparation method thereof. The aerosol-generating product comprises 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 within the outer wrapping paper 1. The aerosol-generating matrix 2 is orderly arranged reconstituted tobacco shreds, and the reconstituted tobacco shreds comprise a reconstituted tobacco shred body and a coating layer coated on the outer surface of the reconstituted tobacco shreds body. The present invention coats the surface of reconstituted tobacco shreds obtained by mixing reconstituted tobacco and natural tobacco raw materials. The coating layer on the surface of the reconstituted tobacco shreds can improve the physical strength of the reconstituted tobacco shreds in multiple ways, thereby resolving the problems of difficulty in controlling the filling amount of the reconstituted tobacco shreds, the stickiness of the reconstituted tobacco shreds after absorbing moisture, and the reduction in stiffness, which leads to softening of the ordered tobacco core rod.

[0010] In a first aspect, the present invention provides an aerosol-generating article comprising an ordered 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 within the outer wrapping paper 1;

[0011] The composite cooling filter element 4 includes a hollow cooling element 41 and a filter element 42. The outer sides of the hollow cooling element 41 and the filter element 42 are wrapped with a forming 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.

[0012] The aerosol generating substrate 2 has cigarette paper 21 on the outside;

[0013] The aerosol generating matrix 2 is orderly arranged reconstituted tobacco shreds, and the reconstituted tobacco shreds include a reconstituted tobacco shred main body and a coating layer coated on the outer surface of the reconstituted tobacco shred main body.

[0014] Preferably, the end cavity member 5 has one or more cavities;

[0015] 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;

[0016] The end cavity member 5 is an acetate fiber bundle tube, a paper tube or a non-woven fabric tube;

[0017] The axial length of the end cavity part 5 is one to two times the diameter of the end cavity part 5 .

[0018] Preferably, the hollow cooling element 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 element 41 .

[0019] 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.

[0020] The support member 3 of the present invention can be selected from any conventional support member used in aerosol-generating products in the art. It can be a common hollow tube, such as a hollow acetate fiber bundle tube, a hollow paper tube, or a hollow non-woven fabric tube. Alternatively, it can be a support member having a grooved corrugated layer as the tube wall. The support member 3 can be configured to include a flavoring or smoke-generating component based on actual conditions. The flavoring or smoke-generating component can be formed by directly applying a flavoring or smoke-generating layer to the tube wall, or by adding a flavoring or smoke-generating substance to the lumen of the support section. Examples of flavoring substances include natural incense raw materials and tobacco extracts, while examples of smoke-generating substances include propylene glycol and glycerol.

[0021] The filter element 42 of the present invention is an acetate fiber tow.

[0022] Preferably, the material of the coating layer includes ethyl cellulose, shellac, and carnauba wax.

[0023] Preferably, the mass of the coating layer accounts for 5-30% of the mass of the reconstituted tobacco shreds.

[0024] The second aspect of the present invention provides a method for preparing an aerosol-generating article comprising the ordered aerosol-generating substrate having a coating layer as described in the first aspect of the present invention, comprising the following steps:

[0025] S1, preparing reconstituted tobacco leaf sheets;

[0026] S2, applying functional additives to the reconstituted tobacco leaf sheet obtained in step S1 and drying the sheet; the functional additives include smoke-generating agents, flavors, tobacco extracts, adhesives, etc.;

[0027] S3, preparing a coating material mixture;

[0028] S4, spraying the coating material mixture obtained in step S3 onto both sides of the reconstituted tobacco leaf sheet obtained in step S2;

[0029] S5, after the coating is completed, drying the reconstituted tobacco leaf sheet with the coating material to solidify the coating layer and tightly adhere to the reconstituted tobacco leaf sheet, thereby obtaining a reconstituted tobacco leaf sheet with a coating layer;

[0030] S6, rolling: rolling the reconstituted tobacco leaf slices obtained in step S5 and placing them in a sealed bag for later use;

[0031] S7, shredding, gathering and compounding: taking the rolled reconstituted tobacco leaf slices obtained in step S6 and shredding them to obtain reconstituted tobacco leaf shreds with a coating layer, wherein the reconstituted tobacco leaf shreds include a reconstituted tobacco leaf shreds body and a coating layer coated on the outer surface of the reconstituted tobacco leaf shreds body;

[0032] Then, the prepared reconstituted tobacco shreds with a coating layer are gathered in an orderly manner using cigarette paper 21 to prepare an aerosol generating matrix 2, and the hollow cooling component 41 and the filter component 42 are compounded with the forming paper 43 using a compounding machine to obtain the composite cooling filter component 4, and then the aerosol generating matrix 2, the support component 3, the composite cooling filter component 4 and the end cavity component 5 are compounded with the outer wrapping paper 1 using a compounding machine, and finally, the outer wrapping paper 1 on the outside of the composite cooling filter component 4 and the end cavity component 5 is wrapped with the tipping paper 6 to obtain an aerosol generating product.

[0033] Preferably, in step S3, the method for preparing the coating material is: adding the main body of the coating material into a solvent and stirring to prepare a coating material mixed solution with a mass concentration of 4-15%;

[0034] The coating material includes but is not limited to ethyl cellulose, shellac, and carnauba wax, and the solvent includes alcohols, such as anhydrous ethanol.

[0035] Preferably, in step S5, after coating is completed, the drying conditions include placing it in an oven for drying, or air-drying with dry air. The drying conditions in the oven are: placing it in an oven at 45-60°C and baking it for 5-10 minutes; the dry air drying conditions are: air-drying it with dry air at 45-60°C for 5-10 minutes.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. The present invention coats the surface of the reconstituted tobacco leaf slices. After the reconstituted tobacco leaf slices are subsequently cut into reconstituted tobacco leaf shreds, the coating layer on the surface of the reconstituted tobacco leaf shreds can improve the physical strength of the reconstituted tobacco leaf shreds in three aspects. First, the present invention coats the reconstituted tobacco leaf shreds with the coating layer after the reconstituted tobacco leaf shreds have absorbed the smoke-generating agent and dried. The coating layer can improve the physical strength of the reconstituted tobacco leaf shreds and prevent the reconstituted tobacco leaf shreds from becoming soft after absorbing the smoke-generating agent. Second, the coating layer prevents the smoke-generating agent (only the smoke-generating agent is used as an example, and also includes flavors, tobacco extracts, adhesives, etc.) inside the reconstituted tobacco leaf shreds from seeping onto the surface of the reconstituted tobacco leaf shreds. Third, the coating layer can effectively prevent the passage of moisture in the air, isolate the internal reconstituted tobacco leaf shreds from the outside world, and effectively reduce the hygroscopicity of the reconstituted tobacco leaf shreds. The problem of decreased physical strength of reconstituted tobacco shreds is avoided from three aspects, thereby solving the problem of difficult control of the filling amount of reconstituted tobacco shreds. Under the condition of quantitative weight, the stiffness of the tobacco core rod is guaranteed, thereby avoiding the problem of softening of the ordered tobacco core rod due to low stiffness.

[0038] 2. The coating layer on the surface of the reconstituted tobacco shreds of the present invention prevents the reconstituted tobacco shreds from becoming sticky after absorbing moisture, preventing adhesion between shreds and ensuring smooth and orderly gathering. Furthermore, by preventing the reconstituted tobacco shreds from absorbing moisture from the air, the problem of reduced smoke volume and increased smoke temperature is avoided.

[0039] 3. The coating layer on the surface of the reconstituted tobacco shreds of the present invention can prevent the smoke-generating agent inside the reconstituted tobacco shreds from seeping out to the surface of the reconstituted tobacco shreds, 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, which reduces the requirements for cigarette paper.

[0040] 4. The coating layer on the surface of the reconstituted tobacco shreds of the present invention can also lock the internal components of the reconstituted tobacco shreds (such as smoke-generating agents, aroma components, etc.), thereby preventing the internal components of the reconstituted tobacco shreds from volatilizing and dissipating during storage.

[0041] 5. The coating material of the present invention is selected from ethyl cellulose. The coating layer formed by this material can not only effectively prevent the passage of moisture, but also has a certain degree of air permeability. Therefore, when the reconstituted tobacco shreds are heated to generate aerosols, the aerosols can still pass through the coating layer smoothly and be gradually released without affecting the smoke production of the reconstituted tobacco shreds themselves.

[0042] 6. The amount of coating material used in this invention, as well as the preparation conditions during the coating process, ensures uniformity of the coating. The amount and uniformity of the coating significantly influence the volatility. Excessive or uneven coating may hinder the release of volatile substances. However, appropriate coating amount and uniformity ensure that volatile substances can pass smoothly through the coating when heated.

[0043] 7. The utility model sets an end cavity member downstream of the filter element. 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 element, thereby avoiding the problem of the mouth end surface of the aerosol generating product being hot.

[0044] 8. The end cavity of the present invention has an internal air flow channel that minimizes smoke retention. Consequently, smoke stays in the end cavity for a short time, preventing heat transfer from the smoke to the exterior surface, further preventing the mouthpiece from burning. Furthermore, because the end cavity minimizes smoke retention, placing the end cavity downstream of the filter does not significantly increase draw resistance.

[0045] 9. The end cavity part of the utility model is a hollow acetate fiber bundle tube, a hollow paper tube or a hollow non-woven fabric tube. Since it is hollow inside, the material area in contact with the consumer's mouth is reduced, thereby alleviating the consumer's safety concerns.

[0046] 10. In terms of preparation method, the present invention first uses a compounding machine to use the forming 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 member 3, the composite cooling filter element 4 and the end cavity member 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

[0047] Figure 1 Schematic diagram of the structure of an aerosol-generating article comprising an ordered aerosol-generating matrix having a coating layer.

[0048] 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;

[0049] 21-cigarette paper, 41-hollow cooling element, 42-filter element, 43-wrapping paper. DETAILED DESCRIPTION

[0050] The present invention will be described in further detail below with reference to the embodiments.

[0051] Those skilled in the art will understand that the following examples are intended only to illustrate the present invention and should not be construed as limiting the scope of the present invention. Where specific techniques or conditions are not specified in the examples, the techniques or conditions described in literature in the art or in accordance with the product specifications were followed. Materials or equipment used, where the manufacturer is not specified, are commercially available conventional products.

[0052] Those skilled in the art will appreciate that, unless otherwise stated, 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 utility model 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 say that an element is "connected" to another element, it can be directly connected to the other element, or there may be intermediate elements. In addition, the "connection" used here may include wireless connection.

[0053] In the description of this utility model, unless otherwise specified, "plurality" means two or more. Terms such as "inner," "upper," and "lower" indicating positions or states are based on the positions or states shown in the accompanying drawings and are intended solely to facilitate and simplify the description of this utility model. They do not indicate or imply that the devices or components referred to must have a specific position, be constructed, or operate in a specific position. Therefore, they should not be construed as limitations on this utility model.

[0054] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "provided with" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0055] Those skilled in the art will understand 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 field 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 those in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as such herein.

[0056] Example 1

[0057] like Figure 1 As shown, this embodiment provides an aerosol-generating article comprising an ordered 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 within the outer wrapping paper 1;

[0058] The composite cooling filter element 4 includes a hollow cooling element 41 and a filter element 42. The outer sides of the hollow cooling element 41 and the filter element 42 are wrapped with a forming 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.

[0059] The aerosol generating substrate 2 has cigarette paper 21 on the outside;

[0060] The aerosol generating matrix 2 is orderly arranged reconstituted tobacco shreds, and the reconstituted tobacco shreds include a reconstituted tobacco shred main body and a coating layer coated on the outer surface of the reconstituted tobacco shred main body.

[0061] Preferably, the end cavity member 5 has one or more cavities;

[0062] 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;

[0063] The end cavity member 5 is an acetate fiber bundle tube, a paper tube or a non-woven fabric tube;

[0064] The axial length of the end cavity part 5 is one to two times the diameter of the end cavity part 5 .

[0065] 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.

[0066] In this embodiment, the support member 3 is a hollow paper tube.

[0067] In this embodiment, the filter element 42 is made of acetate fiber tow.

[0068] The material of the coating layer includes ethyl cellulose.

[0069] The mass of the coating layer accounts for 5% of the mass of the reconstituted tobacco shreds.

[0070] The method for preparing an aerosol-generating article comprising an ordered aerosol-generating substrate having a coating layer comprises the following steps:

[0071] S1, preparing reconstituted tobacco leaf sheets;

[0072] S2, applying functional additives to the reconstituted tobacco leaf sheet obtained in step S1 and drying the sheet; the functional additives include a smoke generating agent, flavor, tobacco extract, and a binder;

[0073] S3, preparing a coating material mixture;

[0074] S4, spraying the coating material mixture obtained in step S3 onto both sides of the reconstituted tobacco leaf sheet obtained in step S2;

[0075] S5, after the coating is completed, drying the reconstituted tobacco leaf sheet with the coating material to solidify the coating layer and tightly adhere to the reconstituted tobacco leaf sheet, thereby obtaining a reconstituted tobacco leaf sheet with a coating layer;

[0076] S6, rolling: rolling the reconstituted tobacco leaf slices obtained in step S5 and placing them in a sealed bag for later use;

[0077] S7, shredding, gathering and compounding: taking the rolled reconstituted tobacco leaf slices obtained in step S6 and shredding them to obtain reconstituted tobacco leaf shreds with a coating layer, wherein the reconstituted tobacco leaf shreds include a reconstituted tobacco leaf shreds body and a coating layer coated on the outer surface of the reconstituted tobacco leaf shreds body;

[0078] Then, the prepared reconstituted tobacco shreds with a coating layer are gathered in an orderly manner using cigarette paper 21 to prepare an aerosol generating matrix 2, and the hollow cooling component 41 and the filter component 42 are compounded with the forming paper 43 using a compounding machine to obtain the composite cooling filter component 4, and then the aerosol generating matrix 2, the support component 3, the composite cooling filter component 4 and the end cavity component 5 are compounded with the outer wrapping paper 1 using a compounding machine, and finally, the outer wrapping paper 1 on the outside of the composite cooling filter component 4 and the end cavity component 5 is wrapped with the tipping paper 6 to obtain an aerosol generating product.

[0079] In step S3, the method for preparing the coating material is as follows: 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%;

[0080] The main body of the coating material includes ethyl cellulose, and the solvent includes anhydrous ethanol.

[0081] In step S5, after the coating is completed, the drying conditions include placing it in an oven for drying, or air-drying it with dry air. The drying conditions in the oven are: placing it in an oven at 60°C and baking it for 5 minutes; the dry air drying conditions are: air-drying it with dry air at 60°C for 5 minutes.

Claims

1. An aerosol-generating article comprising an ordered 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 within 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 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); The aerosol generating substrate (2) has cigarette paper (21) on the outside; The aerosol generating matrix (2) is orderly arranged reconstituted tobacco shreds, and the reconstituted tobacco shreds include a reconstituted tobacco shred main body and a coating layer coated on the outer surface of the reconstituted tobacco shred main body.

2. An aerosol-generating article comprising an ordered aerosol-generating substrate having a coating layer according to claim 1, wherein 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 an ordered aerosol-generating substrate having a coating layer according to claim 1 , wherein The hollow cooling element (41) has a ventilation hole that 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 an ordered aerosol-generating substrate having a coating layer according to claim 1 , wherein: 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 an ordered aerosol-generating substrate having a coating layer according to claim 1 , wherein: The materials of the coating layer include ethyl cellulose, shellac and carnauba wax.

6. An aerosol-generating article comprising an ordered aerosol-generating substrate having a coating layer according to claim 1 , wherein: The mass of the coating layer accounts for 5-30% of the mass of the reconstituted tobacco shreds.

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