An aerosol-generating article

Abstract

The application provides an aerosol generating article, and relates to the technical field of aerosol generation. Specifically, the aerosol generating article comprises a functional segment, an outer wrapping layer, an inner wrapping layer and a substrate segment; wherein the substrate segment comprises an integrated solid substrate, one end of the substrate segment is connected to the functional segment in the axial direction; the inner wrapping layer wraps the integrated solid substrate in the circumferential direction, the circumferential direction is a direction surrounding the axial direction, and the inner wrapping layer is a tobacco sheet containing an aerosol generating agent or a non-tobacco sheet containing an aerosol generating agent; and the outer wrapping layer wraps the inner wrapping layer and the functional segment in the circumferential direction. The aerosol generating article provided by the application effectively solves the problems of excessively high temperature and insufficient aroma release of traditional aerosol generating articles in the process of heating without combustion.

Description

Technical Field

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

[0002] In the smoking process of heated tobacco products (HNB), the heating control of the aerosol-generating matrix directly affects the user experience. Currently, these products typically use electric heating to release aerosols from the tobacco matrix at low temperatures, avoiding the production of harmful substances during high-temperature combustion. However, several technical challenges remain in practical use: First, the slow temperature rise in the initial heating stage may lead to insufficient aerosol generation, resulting in less smoke in the first few puffs and a decreased smoking experience; second, when the heating temperature is too high or unevenly distributed, it not only causes the aerosol temperature to rise, leading to a burning sensation in the mouth, but also may prevent the full release of some volatile flavor compounds due to overheating, affecting the complexity and fullness of the aroma.

[0003] Therefore, this application is submitted. Summary of the Invention

[0004] To address the aforementioned issues of hot mouthpieces and insufficient flavor in aerosol-generated products, this application provides an aerosol-generated product that can effectively reduce the inhalation temperature and enhance aroma release, while also increasing the aerosol smoke concentration during the initial inhalation process.

[0005] This application provides an aerosol generating article, comprising a functional segment, an outer wrapping layer, an inner wrapping layer, and a matrix segment; wherein, the matrix segment comprises an integral solid matrix, and one end of the matrix segment is connected to the functional segment along the axial direction; the inner wrapping layer wraps the integral solid matrix along the circumferential direction, the circumferential direction being the direction surrounding the axial direction, and the inner wrapping layer is a tobacco sheet containing an aerosol generating agent or a non-tobacco sheet containing an aerosol generating agent; the outer wrapping layer wraps the inner wrapping layer and the functional segment along the circumferential direction.

[0006] In some preferred embodiments, the integral solid matrix is ​​an integrally formed solid aerosol generating matrix, and the integral solid matrix is ​​a dense structure without cavities.

[0007] In some preferred embodiments, the integral solid matrix is ​​an integrally formed solid aerosol generating matrix, the integral solid matrix has at least one airflow channel, the airflow channel passes through both ends of the integral solid matrix in the axial direction, and at least one of the airflow channels is located at the center of the integral solid matrix.

[0008] In some preferred embodiments, the circumferential surface of the integral solid substrate is provided with at least one groove, the groove extending through at least one end of the integral solid substrate.

[0009] In some preferred embodiments, the length ratio of the matrix segment to the aerosol-generated article is (0.1-0.8):1; and / or, the length of the inner wrapping layer is the same as the length of the matrix segment.

[0010] In some preferred embodiments, the surface of the inner wrapping layer has an embossed texture, which is suitable for increasing the cross-sectional porosity of the inner wrapping layer perpendicular to the axial direction.

[0011] In some preferred embodiments, the inner wrapping layer consists of at least one sheet, wherein the thickness of a single sheet ranges from 0.1 mm to 0.3 mm, and the sheet is a tobacco sheet containing an aerosol generating agent or a non-tobacco sheet containing an aerosol generating agent.

[0012] In some preferred embodiments, the cross-sectional porosity of the inner encapsulation layer perpendicular to the axial direction is 50%-70%, and the cross-sectional porosity of the integral solid matrix perpendicular to the axial direction is 18%-30%.

[0013] In some preferred embodiments, the inner wrapping layer consists of at least two sheets, the sheets being tobacco sheets containing an aerosol generating agent or non-tobacco sheets containing an aerosol generating agent; and / or, an annular heating element is disposed between the inner wrapping layer and the integral solid matrix.

[0014] In some preferred embodiments, the outer wrapping layer is made of paper material.

[0015] In some preferred embodiments, the functional segment includes at least one of a cooling segment and a filtration segment.

[0016] This application has the following beneficial effects:

[0017] This application utilizes either tobacco sheets containing aerosol-generating agents or non-tobacco sheets containing aerosol-generating agents as the inner wrapping layer. This not only serves as a supplementary source of aerosols, improving the problem of insufficient smoke during heating (e.g., in the initial heating stage), but also, through the auxiliary effect of the sheet, appropriately lowers the aerosol temperature during inhalation, reducing the burning sensation in the mouth. Simultaneously, this design helps to release aroma components more evenly, resulting in a more complete flavor profile. This structure enhances user comfort and sensory experience while ensuring sufficient aerosol quantity. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of an aerosol-generated article provided for an embodiment of this application;

[0020] Figure 2 A cross-sectional schematic diagram of an aerosol-generated article provided for an embodiment of this application;

[0021] Figure 3 A perspective view of a first aerosol-generating article provided for an embodiment of this application;

[0022] Figure 4 A perspective view of a second aerosol-generating article provided for an embodiment of this application;

[0023] Figure 5 A cross-sectional view of a first type of integral solid matrix provided for embodiments of this application;

[0024] Figure 6 A cross-sectional view of a second type of integral solid matrix provided for embodiments of this application;

[0025] Figure 7 A cross-sectional view of a third type of integral solid matrix provided for embodiments of this application;

[0026] Figure 8 This is a schematic diagram of the planar structure of the inner coating layer of an aerosol-generated article provided as an embodiment of this application.

[0027] Figure label:

[0028] Matrix segment 10, inner encapsulation layer 20, outer encapsulation layer 30, functional segment 40. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this application, it should be noted that the term "package" is used to indicate a projected covering relationship between objects. This can be either direct contact or indirect formation of a package, meaning a package can be formed indirectly through an intermediate medium. Furthermore, "package" can refer to partial or complete packaging. "Axial direction" refers to the direction extending along the central axis (central shaft) of an object; "radial direction" refers to the direction perpendicular to the axial direction; and "circumferential direction" refers to the direction formed by circumferential formation along the axial direction. Taking a cylindrical structure as an example, the axial direction refers to the direction along the length of the cylinder, the radial direction refers to the diameter (radius) direction perpendicular to the axial direction, and the circumferential direction refers to the lateral direction formed around the cylinder's axial direction (the direction parallel to the circumferential tangent). Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] Please see Figures 1-8 This application provides an aerosol generating article, including a functional segment 40, an outer coating layer 30, an inner coating layer 20, and a matrix segment 10; the matrix segment 10 includes an integral solid matrix. Here, "integrated solid matrix" refers to a solid aerosol generating matrix formed in one piece, where "integrated molding" means being directly formed into a single structure through processing, such as extruding raw materials to form a solid structure with a specific shape. An aerosol generating matrix refers to a material that can generate or release usable aerosols when heated to a preset temperature without combustion, including but not limited to medicinal materials, spices, and tobacco.

[0034] In some embodiments, one end of the matrix segment 10 is connected to the functional segment 40 in the axial direction, wherein the functional segment 40 may include at least one of a cooling segment and a filtering segment. In some embodiments, the cooling segment may be a paper hollow tube, which extends the aerosol flow path or introduces external cold air to reduce the aerosol temperature and prevent high-temperature gas from irritating or burning the oral cavity and respiratory tract. In other embodiments, the filtering segment may be a cellulose acetate tube, used to trap harmful components in the aerosol while adjusting airflow resistance to make the suction process smoother.

[0035] In some embodiments, the inner wrapping layer 20 wraps an integral solid matrix in the circumferential direction. The inner wrapping layer 20 is a tobacco sheet containing an aerosol generating agent or a non-tobacco sheet containing an aerosol generating agent. The outer wrapping layer 30 wraps the inner wrapping layer 20 and the functional segment 40 in the circumferential direction. Here, "wrapping" refers to the projection of objects onto the same plane forming a covering relationship, which can be either direct contact or indirect wrapping. For example, the inner wrapping layer 20 wrapping the integral solid matrix in the circumferential direction can mean that the inner wrapping layer 20 is in direct contact with the integral solid matrix and is wrapped outside the integral solid matrix, or it can mean that the inner wrapping layer 20 is in indirect contact with the integral solid matrix. For example, a ring-shaped heating element can be disposed between the two, with the ring-shaped heating element directly wrapped outside the integral solid matrix, and the inner wrapping layer 20 directly wrapped around the ring-shaped heating element.

[0036] Please see Figures 1 to 4 In some embodiments, the outer wrapping layer 30 may wrap the inner wrapping layer 20 and the functional segment 40 in the circumferential direction. The material of the outer wrapping layer 30 is not particularly limited. In some embodiments, the outer wrapping layer 30 may be a fiber-based material, such as paper, so that the aerosol-generated article has a predetermined and stable contour or structural shape.

[0037] Please see Figures 1 to 4 The inner wrapping layer 20 is composed of tobacco sheets containing an aerosol generating agent or non-tobacco sheets containing an aerosol generating agent. In some embodiments, the inner wrapping layer 20 completely encapsulates the integral solid matrix in the circumferential direction, and its length is consistent with the length of the integral solid matrix.

[0038] Aerosol generating agents include glycerin, propylene glycol, etc. Tobacco sheets containing aerosol generating agents are usually prepared using existing technologies with raw materials such as tobacco powder, fiber, glycerin, water, and flavorings, through processes such as slurry or dry processing. Non-tobacco sheets containing aerosol generating agents are usually prepared using conventional technologies with plant fibers or synthetic polymers as the base material, and with the addition of ingredients such as glycerin, nicotine, adhesives, flavorings, and pore regulators, through processes such as wet papermaking, dry rolling, or casting.

[0039] In some embodiments, the inner wrapping layer 20 is composed of at least one sheet, such as one, two, three, or more layers, wherein the sheet is a tobacco sheet containing an aerosol-generating agent or a non-tobacco sheet containing an aerosol-generating agent. When the inner wrapping layer 20 is composed of at least two sheets, each sheet can be manufactured using the same process or prepared using different processes, for example, one sheet can be a slurry-processed sheet, and the other sheet can be a dry-processed sheet. In other embodiments, the thickness of a single sheet is 0.1 mm to 0.3 mm. In still other embodiments, the inner wrapping layer 20 is composed of two tobacco sheets, and the thickness of a single tobacco sheet is 0.2 mm, then the overall thickness of the inner wrapping layer is 0.4 mm. Because the inner wrapping layer 20 contains substances such as fiber, tobacco powder and calcium carbonate, it has a rough surface. Therefore, there are gaps between the stacked sheets of the inner wrapping layer 20 and between the inner wrapping layer 20 and the integrated solid matrix, which allows for better air passage. During the suction process, the air can fully contact the integrated solid matrix, allowing it to burn completely. At the same time, it can reduce suction resistance and improve the quality of the combustion.

[0040] It should be noted that, Figure 3 and Figure 4 The dashed lines on the inner encapsulation layer 20 are only for illustrative purposes and do not indicate that the encapsulation layer has a discontinuous or broken structure. In fact, the inner encapsulation layer 20 forms a continuous structure on the outer periphery of the entire monolithic solid matrix.

[0041] In some embodiments, please refer to Figure 4 The integral solid matrix in matrix segment 10 can be a cavity-free, dense structure. Typically, this structure is suitable for heating appliances with peripheral heating. A cavity-free, dense (solid) structure in the aerosol generating matrix offers advantages such as high mechanical strength and durability. Furthermore, its low adsorption capacity helps maintain component stability and reduces the risk of oxidation or hydrolysis during storage. In addition, the cavity-free, dense structure of the aerosol generating matrix is ​​simpler and cheaper to produce, and it is less prone to decomposition and the generation of harmful substances at high temperatures.

[0042] It should be noted that the term "cavity-free dense structure" in this application can refer to a solid structure. "Cavity-free" can mean that the integral solid matrix does not contain any large airflow channels that are easily identifiable to the naked eye, such as airflow channels with a pore size greater than 1 mm. "Dense structure" can mean that the cross-section of the integral solid matrix perpendicular to its axial direction is relatively dense, for example, the cross-sectional porosity of the cross-section is ≤30%.

[0043] In some embodiments, please refer to Figure 3The integral solid matrix in the matrix segment 10 may also have at least one airflow channel, which runs through both ends of the integral solid matrix in the axial direction. The location of the airflow channel is not particularly limited. In some embodiments, at least one airflow channel in the integral solid matrix is ​​located at the center of the integral solid matrix. The term "center" here can refer to any internal location, such as a relatively central area, and does not necessarily refer to a strictly geometric center area.

[0044] It should be noted that aerosol generating substrates with a central channel (at least one airflow channel located in the center of the integrated solid matrix) are suitable for central heating, peripheral heating, and simultaneous internal and peripheral heating.

[0045] Furthermore, the airflow channel in the embodiments of this application can be a straight channel, that is, the airflow channel extends in a straight line; of course, the airflow channel can also be a curved channel, for example, extending in a spiral shape.

[0046] In embodiments with multiple airflow channels, the arrangement of the airflow channels is not limited.

[0047] In some embodiments, such as Figure 5 As shown, the integrated solid matrix can have 9 airflow channels, and one of the airflow channels is located in the center of the integrated solid matrix, so that the integrated solid matrix forms a hollow cavity structure, which can be used for heating appliances with a central heating needle, and the central heating needle can be easily inserted into the hollow cavity.

[0048] In other embodiments, such as Figure 6 As shown, the integrated solid matrix can have 5 airflow channels, and one of the airflow channels is located in the center of the integrated solid matrix.

[0049] In some other embodiments, please refer to Figure 7 The circumferential surface of the integrated solid substrate has at least one groove, which extends through at least one end of the integrated solid substrate. This reduces the obstruction encountered by airflow when passing through the integrated solid substrate, thereby reducing the suction resistance for the user.

[0050] The device includes at least one groove, for example, one, two, three, or more. When there are multiple grooves, they are evenly spaced along the circumference of the integral solid substrate to allow airflow to pass through the substrate section more evenly.

[0051] In some embodiments, the length ratio of the matrix segment 10 to the length of the aerosol-generated article is 0.1-0.8:1, and the length of the aerosol-generated article can be, for example, 30-62.5 mm, and the length of the matrix segment 10 can be, for example, 3-50 mm. In other embodiments, the length of the integral solid matrix in the matrix segment 10 is consistent with the length of the matrix segment 10. In still other embodiments, the length of the encapsulation layer 20 is consistent with the length of the matrix segment 10, and the length of the inner encapsulation layer 20 can be consistent with the length of the integral solid matrix in the matrix segment 10.

[0052] In some implementations, please refer to Figure 8 The surface of the inner wrapping layer 20 is also provided with a textured surface formed by an embossing process, which is suitable for increasing the cross-sectional porosity of the inner wrapping layer in the direction perpendicular to the axial direction.

[0053] It should be noted that, Figure 8 The embossed structure of the inner encapsulation layer 20 shown in the figure reflects the uneven texture formed on the surface. It is only intended to illustrate the approximate uneven texture shape of the thin sheet in the inner encapsulation layer 20 and does not represent the shape and size of all the three-dimensional microstructures of the inner encapsulation layer.

[0054] In some embodiments, the cross-sectional porosity of the inner wrapping layer 20 perpendicular to the axial direction is greater than that of the integral solid matrix perpendicular to the axial direction. In other embodiments, the cross-sectional porosity of the inner wrapping layer 20 perpendicular to the axial direction is 50%-70%. In still other embodiments, the cross-sectional porosity of the integral solid matrix perpendicular to the axial direction is 18%-30%. Here, cross-sectional porosity refers to the percentage of pore volume in the material's total volume along its cross-sectional direction, reflecting the material's density. Specifically, the cross-sectional porosity of the inner wrapping layer perpendicular to the axial direction is the porosity calculated by taking any face of the inner wrapping layer perpendicular to the axial direction; the cross-sectional porosity of the integral solid matrix perpendicular to the axial direction is the porosity calculated by taking any face of the integral solid matrix perpendicular to the axial direction. Therefore, by making the cross-sectional porosity of the inner wrapping layer greater than that of the integral solid matrix, when the aerosol-generated product is drawn in, the external air can fill the inner wrapping layer more quickly and in greater quantities, thereby reducing the rate at which internal heat dissipates outward (the heat transfer rate of the matrix is ​​greater than that of the air). This ensures that heat can be concentrated inside, so as to better heat the integral solid matrix and make it fully heated, thereby improving the utilization rate of the matrix and increasing the amount of aerosol generated by the product.

[0055] In addition, during the aerosol generation process of the product being drawn in, substances such as tar often seep out. With the addition of the inner coating layer 20, its higher porosity allows for better adsorption, effectively absorbing the tar generated during heating of the matrix segment 10 and preventing it from penetrating the outer coating layer 30. Furthermore, since the sheet forming the inner coating layer 20 contains an aerosol generating agent, it can also absorb heat and generate aerosols, thereby increasing the total amount of aerosols in the product and improving the concentration of aerosols drawn in.

[0056] In some embodiments, the inner wrapping layer 20 may consist of at least two sheets, which are tobacco sheets containing an aerosol generating agent or non-tobacco sheets containing an aerosol generating agent; thereby, the thickness of the inner wrapping layer can be increased, for example, the inner wrapping layer can be thick enough to release a greater amount of aerosol during heating, so as to better improve the total aerosol content of the article.

[0057] In other embodiments, when the inner wrapping layer 20 may consist of at least two thin sheets, an annular heating element may also be disposed between the inner wrapping layer 20 and the integral solid matrix. When the aerosol-generating article is placed in a heating device, the annular heating element can receive energy provided by the heating device and convert it into heat energy radiated into the adjacent matrix, such as the integral solid matrix and the thin sheets of the inner wrapping layer, thereby heating them to generate an aerosol for the user to inhale. In some embodiments, the annular heating element may be a metallic conductive element, such as iron, copper, nickel, aluminum, etc.

[0058] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An aerosol-generating product, characterized in that, It includes a functional segment, an outer wrapping layer, an inner wrapping layer, and a matrix segment; wherein, the matrix segment includes an integral solid matrix, and one end of the matrix segment is connected to the functional segment along the axial direction; The inner wrapping layer wraps the integral solid matrix in the circumferential direction, which is the direction surrounding the axial direction. The inner wrapping layer is a tobacco sheet containing an aerosol generating agent or a non-tobacco sheet containing an aerosol generating agent. The outer wrapping layer wraps around the inner wrapping layer and the functional segment in the circumferential direction.

2. The aerosol-generating product according to claim 1, characterized in that, The integrated solid matrix is ​​a solid aerosol generating matrix formed in one piece, and the integrated solid matrix is ​​a dense structure without cavities.

3. The aerosol-generating product according to claim 1, characterized in that, The integrated solid matrix is ​​a solid aerosol generating matrix formed in one piece. The integrated solid matrix has at least one airflow channel, which passes through both ends of the integrated solid matrix in the axial direction, and at least one of the airflow channels is located at the center of the integrated solid matrix.

4. The aerosol-generating product according to claim 1, characterized in that, The circumferential surface of the integral solid substrate is provided with at least one groove, and the groove penetrates at least one end of the integral solid substrate.

5. The aerosol-generating product according to claim 1, characterized in that, The ratio of the length of the matrix segment to the length of the aerosol-generated product is (0.1-0.8):1; And / or, the length of the inner wrapping layer is the same as the length of the matrix segment.

6. The aerosol-generating product according to claim 1, characterized in that, The inner wrapping layer has an embossed texture on its surface, which is suitable for increasing the cross-sectional porosity of the inner wrapping layer in the direction perpendicular to the axial direction.

7. The aerosol-generating product according to claim 1, characterized in that, The inner wrapping layer consists of at least one sheet, wherein the thickness of a single sheet ranges from 0.1 mm to 0.3 mm, and the sheet is a tobacco sheet containing an aerosol generating agent or a non-tobacco sheet containing an aerosol generating agent.

8. The aerosol-generating product according to claim 1, characterized in that, The porosity of the inner wrapping layer perpendicular to the axial direction is 50%-70%, and the porosity of the integral solid matrix perpendicular to the axial direction is 18%-30%.

9. The aerosol-generating article according to claim 2 or 3, characterized in that, The inner wrapping layer consists of at least two thin sheets, which are tobacco sheets containing aerosol generating agents or non-tobacco sheets containing aerosol generating agents. And / or, an annular heating element is provided between the inner wrapping layer and the integral solid matrix.

10. The aerosol-generating product according to claim 1, characterized in that, The functional section includes at least one of a cooling section and a filtration section.

Images