Aerosol generating medium section, preparation method thereof and aerosol generating product
By laying aerosol on the cast layer to generate medium particles and form a sheet-like matrix, combined with the base layer and coating layer, the problem of unstable suction resistance of particulate medium units is solved, and a stable airway and suction experience are achieved.
Patent Information
- Application Number
- CN202411533563.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2026-05-01
AI Technical Summary
Existing particulate aerosol generating media units suffer from unstable suction resistance due to vibration during transportation and storage, affecting the suction experience.
By laying aerosol on the cast layer to generate medium particles and form a sheet-like matrix, combined with the base layer and coating layer, the particle size, distribution density and loading are adjusted to form a stable air channel and improve the suction resistance stability.
It achieves a stable distribution of aerosol generation medium particles, improves the stability of draw resistance and the vaping experience, and ensures consistency in vapor production and flavor.
Smart Images
Figure CN121942965A_ABST
Abstract
Description
Technical Field
[0001] The embodiments of this application relate to the field of aerosol generation technology, and in particular to an aerosol generation medium segment and its preparation method, and an aerosol generation product. Background Technology
[0002] Aerosol generating media can form aerosols by ignition or by heating without combustion. In the case of heated but non-combustible aerosol generating media, the aerosol generating media is heated by an external heat source to a level sufficient to release aerosols. The aerosol generating media does not burn; instead, it is heated by loading a smoke-generating agent to release aerosols during use.
[0003] The morphology of the media units in the aerosol generating medium section mainly includes sheet-like, filamentous, and granular forms. In related technologies where the media units are granular, the filling process for filling the media units results in unstable suction resistance. Furthermore, the vibration and other effects during transportation and storage of granular media units can cause the granular media units in local areas of the aerosol generating medium section to become increasingly compact, leading to greater suction resistance and a poor suction experience. Summary of the Invention
[0004] In view of this, the embodiments of this application aim to provide an aerosol generating medium segment and its preparation method, as well as an aerosol generating article.
[0005] The first aspect of this application provides a method for preparing an aerosol generating medium segment, the method comprising: preparing aerosol generating medium particles and a slurry; casting the slurry to form a casting layer; laying the aerosol generating medium particles on the top surface of the casting layer to form a particle layer, the casting layer and the particle layer together forming a sheet-like matrix; and winding the sheet-like matrix to form an aerosol generating medium segment.
[0006] In some embodiments, casting the slurry to form a casting layer includes: casting the slurry onto the top surface of a substrate layer to form the casting layer, wherein the substrate layer, the casting layer, and the particle layer together form the sheet matrix.
[0007] In some embodiments, the substrate layer may be made of plant fiber fabric, nonwoven fabric, or metal foil.
[0008] In some embodiments, after the aerosol generating medium particles are laid on the top surface of the cast layer to form a particle layer, the method further includes: coating the slurry onto the top surface of the particle layer to form a coating layer, wherein the cast layer, the particle layer, and the coating layer together form the sheet matrix; or laying a coating layer on the top surface of the particle layer, wherein the cast layer, the particle layer, and the coating layer together form the sheet matrix.
[0009] In some embodiments, the covering layer is made of plant fiber fabric, non-woven fabric, or metal foil.
[0010] In some embodiments, the step of laying the aerosol generating medium particles on the top surface of the cast layer to form a particle layer includes: uniformly dispersing the aerosol generating medium particles on the top surface of the cast layer to form a particle layer; or, laying the aerosol generating medium particles on the top surface of the cast layer, such that the particle layer forms particle regions and particle-free regions spaced apart along the winding direction of the sheet matrix, with the aerosol generating medium particles distributed in the particle regions; or, laying the aerosol generating medium particles on the top surface of the cast layer, such that the particle layer forms multiple sub-particle regions distributed along the winding direction of the sheet matrix, wherein the distribution density of the aerosol generating medium particles in at least some of the sub-particle regions is different from the distribution density of the aerosol generating medium particles in other sub-particle regions; or, laying the aerosol generating medium particles on the top surface of the cast layer, such that the particle layer forms multiple sub-particle layers stacked together, wherein the distribution density of the aerosol generating medium particles in at least some of the sub-particle layers is different from the distribution density of the aerosol generating medium particles in other sub-particle layers.
[0011] In some embodiments, the preparation of aerosol generating medium particles includes preparing a variety of aerosol generating medium particles with different particle sizes, and the step of laying the aerosol generating medium particles on the top surface of the cast layer to form a particle layer includes: dispersing the aerosol generating particles with different particle sizes on the top surface of the cast layer, so that the particle layer forms a plurality of sub-particle layers stacked together, wherein the particle size of the aerosol generating medium particles in at least a portion of the sub-particle layers is different from the particle size of the aerosol generating medium particles in other sub-particle layers; or the step of laying the aerosol generating medium particles on the top surface of the cast layer to form a particle layer includes: laying the aerosol generating particles with different particle sizes on the top surface of the cast layer, so that the particle layer forms a plurality of sub-particle regions distributed along the winding direction of the sheet matrix, wherein the particle size of the aerosol generating medium particles in at least a portion of the sub-particle regions is different from the particle size of the aerosol generating medium particles in other sub-particle regions.
[0012] In some embodiments, the preparation of aerosol generating medium particles includes preparing a variety of aerosol generating medium particles with different smoke-generating medium loadings. The step of laying the aerosol generating medium particles on the top surface of the cast layer to form a particle layer includes: laying a variety of aerosol generating medium particles with different smoke-generating medium loadings on the top surface of the cast layer, so that the particle layer forms a plurality of stacked sub-particle layers, wherein the smoke-generating medium loading of the aerosol generating medium particles in at least a portion of the sub-particle layers is different from the smoke-generating medium loading of the aerosol generating medium particles in other sub-particle layers; or, the step of laying the aerosol generating medium particles on the top surface of the cast layer to form a particle layer includes: laying a variety of aerosol generating medium particles with different smoke-generating medium loadings on the top surface of the cast layer, so that the particle layer forms a plurality of sub-particle regions distributed along the winding direction of the sheet-like matrix, wherein the smoke-generating medium loading of the aerosol generating medium particles in at least a portion of the sub-particle regions is different from the smoke-generating medium loading of the aerosol generating medium particles in other sub-particle regions.
[0013] In some embodiments, the preparation of aerosol generating medium particles includes: preparing a substrate having a plurality of receiving holes, the receiving holes forming openings on the outer surface of the substrate; and allowing a smoke-generating medium and / or an aroma-enhancing medium to enter the receiving holes to obtain aerosol generating medium particles.
[0014] In some embodiments, the step of introducing the smoking medium and / or the flavoring medium into the receiving hole includes: mixing the substrate with the smoking medium and / or the flavoring medium and stirring under vacuum or pressure conditions to introduce the smoking medium and / or the flavoring medium into the receiving hole; and / or the step of preparing the substrate includes: cutting a porous material to form the substrate, the porous material including at least one of the following: rush pith, bamboo fungus, freeze-dried plants, and plants that have undergone foaming treatment.
[0015] In some embodiments, after the step of laying the aerosol generating medium particles on the top surface of the cast layer to form a particle layer, the method further includes: sequentially performing a first stage of heating, a second stage of heating, and a third stage of heating to shape the cast layer and the particle layer into the sheet-like matrix, wherein the temperatures of the first stage of heating, the second stage of heating, and the third stage of heating increase sequentially; and / or before winding the sheet-like matrix to form an aerosol generating medium segment, the method further includes: drying the sheet-like matrix.
[0016] The second aspect of this application provides an aerosol generating medium segment, which is prepared by the aerosol generating medium segment preparation method of the first aspect of this application.
[0017] A third aspect of this application provides an aerosol generating article, the aerosol generating article comprising the aerosol generating medium segment described in the second aspect of this application.
[0018] The aerosol generating medium segment and its preparation method, as well as the aerosol generating product of this embodiment, involve laying aerosol generating medium particles on a cast layer and then winding them to form an aerosol generating medium segment. This allows the aerosol generated by the aerosol generating medium particles to flow along the gaps between the medium particles, resulting in a large amount of smoke during inhalation. Furthermore, by adjusting the particle size and distribution density of the aerosol generating medium particles, a stable airway can be formed or different smoke volume requirements can be met. The gaps between the medium particles are relatively stable, thereby improving the stability of the suction resistance. Attached Figure Description
[0019] Figure 1 This is a flowchart illustrating the preparation method of the aerosol generating medium segment according to an embodiment of this application;
[0020] Figure 2 This is a schematic diagram of the structure of a sheet-like matrix prepared by a method according to an embodiment of this application;
[0021] Figure 3 This is a schematic diagram of the structure of an aerosol generating medium segment prepared by a method according to an embodiment of this application.
[0022] Figure 4 A schematic diagram of the structure of an aerosol generating medium segment prepared by a method according to another embodiment of this application;
[0023] Figure 5 A schematic diagram of the structure of the aerosol generating medium segment prepared by the method of another embodiment of this application;
[0024] Figure 6 A schematic diagram of the structure of the aerosol generating medium segment prepared by the method of another embodiment of this application;
[0025] Figure 7 A schematic diagram of the structure of a sheet-like matrix prepared by a method according to another embodiment of this application;
[0026] Figure 8 A schematic diagram of the structure of a sheet-like matrix prepared by a method according to another embodiment of this application;
[0027] Figure 9 This is a schematic diagram of the structure of a sheet-like matrix prepared by a method according to another embodiment of this application.
[0028] Explanation of reference numerals in the attached figures
[0029] 100. Aerosol generating medium segment; 1. Sheet matrix; 10. Cast layer; 20. Particle layer; 21. Aerosol generating medium particles; 30. Base layer; 40. Coating layer; 50. Encapsulation layer. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0031] The specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features can form different embodiments and technical solutions. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this invention will not be described separately.
[0032] In the following description, the terms "first," "second," etc., are used merely to distinguish different objects and do not indicate that the objects have the sameness or relationship. It should be understood that the directional descriptions "above," "below," "outside," and "inside" refer to the orientation under normal use conditions, while "left" and "right" refer to the left and right directions shown in the corresponding diagrams, which may or may not be the left and right directions under normal use conditions.
[0033] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. "A plurality of" means two or more.
[0034] In the relevant description of this application, unless otherwise specified, the numerical range includes the endpoint values.
[0035] The embodiments of this application first provide a method for preparing an aerosol generating medium segment, referring to... Figure 1 The method includes the following steps.
[0036] Step S101: Prepare aerosol generating medium particles and slurry.
[0037] Step S102: Cast the slurry to form a cast layer.
[0038] Step S103: The aerosol generating medium particles are laid on the top surface of the cast layer to form a particle layer. The cast layer and the particle layer together form a sheet-like matrix.
[0039] Step S104: The sheet-like matrix is wound to form an aerosol generation medium segment.
[0040] In step S101, the aerosol generating medium particles specifically refer to granular structures carrying a smoke-generating medium and / or a flavoring medium. The smoke-generating medium can generate aerosols when heated. For example, the smoke-generating medium includes, but is not limited to, glycerin. The flavoring medium can enhance the aroma and flavor of the aerosol. For example, the flavoring medium includes, but is not limited to, flavorings, nicotine preparations, cooling agents, etc. The slurry refers to a fluid dispersion system that can generate aerosols when heated. For example, the slurry includes water, a base material, and a smoke-generating medium. The main function of the base material is to enable the slurry to be cast into sheets. Those skilled in the art can select appropriate materials as base materials according to actual molding requirements, and there are no restrictions on this. The top surface of the cast layer refers to one of the two relatively larger side surfaces of the cast layer.
[0041] The specific preparation methods for aerosol generating medium particles and slurries can be referred to the relevant technologies in this field. The relevant sections below will also introduce the preparation methods for aerosol generating medium particles and slurries in detail, and will not be repeated here.
[0042] In step S102, the slurry is cast to form a cast layer. Casting here specifically refers to the process of laying a fluid slurry on the surface of an object (such as a conveyor belt, roller, steel plate, non-woven fabric, etc.), thereby causing the slurry to spread and form a sheet-like structure.
[0043] In step S103, aerosol generating medium particles are laid on the top surface of the cast layer to form a particle layer. The cast layer and the particle layer together form a sheet-like matrix. As an example, in this step, the aerosol generating medium particles can be laid on the top surface of the cast layer before it is completely solidified. In this way, after the cast layer solidifies, a certain adsorption force will be generated, causing the aerosol generating medium particles to adhere to the top surface of the cast layer. To increase the bonding force between the medium particles and the cast layer, pressure needs to be applied to the medium particles so that the medium particles are at least partially embedded in the cast layer, for example, by rolling. Of course, in some other embodiments, other methods can also be used to achieve the relative fixation of the aerosol generating medium particles between the cast layer and the cast layer. These methods will be described in detail in the relevant sections below.
[0044] Reference Figure 2 The sheet-like matrix 1 obtained in step S103 includes a cast layer 10 and a particle layer 20 stacked together, and aerosol generating medium particles 21 are laid on the cast layer 10 to form the particle layer 20.
[0045] In step S104, the sheet-like matrix is wound to form an aerosol generating medium segment. In this embodiment, the specific direction of winding the sheet-like matrix is not limited. For example, refer to... Figure 3 and Figure 5 The sheet-like matrix 1 can be wound in the forward direction so that in the radial cross-section of the aerosol generating medium section 100, the particle layer 20 is located inside the cast layer 10 (towards the center of the cross-section). Alternatively, refer to... Figure 4 and Figure 6 Alternatively, the sheet-like matrix 1 can be wound in the opposite direction, so that in the radial cross-section of the aerosol generating medium section 100, the particle layer 20 is located outside the cast layer 10 (on the side away from the center of the cross-section). It should be noted that "forward" and "reverse" here refer to any direction that can achieve the corresponding winding effect.
[0046] There is no limit to the specific number of layers of the sheet-like matrix.
[0047] For example, refer to Figure 3 and Figure 4 The sheet-like matrix 1 can be wound into a single layer, meaning that there is no overlapping area of the sheet-like matrix 1 along the circumference of the aerosol generating medium section 100. Of course, there can be an overlapping area at the connection between the first and last ends of the sheet-like matrix 1 to improve the reliability of the connection between the first and last ends. By setting the number of winding layers of the sheet-like matrix 1 to a single layer, it is beneficial to improve heating efficiency, increase the amount of smoke, and achieve good consistency in taste.
[0048] For example, in an embodiment where the number of winding layers of the sheet matrix 1 is a single layer, the thickness of the cast layer 10 can be reduced, and the particle size of the aerosol generating medium particles 21 can be increased. Heating efficiency can be improved by heating the periphery. Furthermore, stable air channels can be formed inside the sheet matrix 1, and the porosity between large particles is relatively large, which is beneficial to improving the stability of suction resistance.
[0049] Or, refer to Figure 5 and Figure 6The sheet-like matrix 1 has multiple winding layers. In this embodiment, "multiple layers" refers to two or more layers. For example, the number of winding layers of the sheet-like matrix 1 can be 2, 3, 4, 5, 6, 7, 8, or more. Preferably, a winding layer count of 3 turns or less is optimal, achieving a suitable balance between the thickness of the cast layer, the particle size of the medium, and the porosity, resulting in a large smoke volume, good flavor consistency, and stable draw resistance. For example, in an embodiment where the sheet-like matrix 1 has multiple winding layers, the thickness of the cast layer 10 can be reduced, and the particle size of the aerosol generating medium particles 21 can be decreased, making it suitable for different heating methods. In this embodiment, by setting the number of winding layers of the sheet-like matrix 1 to multiple layers, a stable airflow channel can be formed between adjacent layers, thereby improving the stability of the draw resistance. However, too many winding layers will reduce the smoke volume, make the medium particles smaller and reduce the load, greatly affecting the smoke volume and consistency.
[0050] The sheet-like matrix can be directly wound to form aerosol generating medium segments, or it can be cut into aerosol generating medium segments of appropriate size according to actual use requirements after winding, without any restrictions.
[0051] In related technologies, the matrix units of the aerosol generating medium section are mainly in the form of flakes, filaments, and granules. In related technologies where the matrix units are granular, the filling process for filling the matrix units results in unstable suction resistance. Furthermore, the vibration and other effects during transportation and storage of the granular matrix units can cause the granular matrix units in local areas of the aerosol generating medium section to become increasingly compact, leading to greater suction resistance and a poor suction experience.
[0052] In the preparation method of the aerosol generating medium segment in this embodiment, aerosol generating medium particles are laid on a cast layer and then wound to form the aerosol generating medium segment. By adjusting the particle size and distribution density of the aerosol generating medium particles, a stable air channel can be formed, thereby improving the stability of the suction resistance.
[0053] Here, the aerosol generating medium particles are laid on the cast layer, which allows for control over the distribution of the aerosol generating medium particles. This helps to reduce displacement caused by factors such as vibration during transportation, storage, or use, thereby further improving the stability of the suction resistance.
[0054] In some embodiments, step S102, forming a cast layer by casting the slurry, specifically includes casting the slurry onto the top surface of the substrate layer to form a cast layer. In this embodiment, the substrate layer, the cast layer, and the particle layer are collectively formed into a sheet-like matrix.
[0055] Reference Figure 7In this embodiment, in the sheet matrix 1, the base layer 30 provides support for the casting layer 10. This helps to further improve the flexibility and structural strength of the sheet matrix, reduce the requirements for casting quality, increase the porosity of the sheet matrix, increase the amount of smoke, facilitate subsequent winding and cutting, reduce media loss, and improve yield.
[0056] In this embodiment, the base layer specifically refers to a thin sheet-like structure that can support the cast layer, and the specific material of the base layer is not limited.
[0057] As an example, the thickness of the base layer can be 0.008-0.02mm, such as 0.008mm, 0.01mm, 0.012mm, 0.014mm, 0.016mm, 0.018mm, 0.02mm, etc. The thickness of the cast layer can be 0.5-0.75mm, such as 0.5mm, 0.52mm, 0.54mm, 0.56mm, 0.58mm, 0.6mm, 0.62mm, 0.64mm, 0.66mm, 0.68mm, 0.7mm, 0.72mm, 0.74mm, 0.75mm, etc. Taking the base layer material as non-woven fabric as an example, the weight ratio of the base layer to the cast layer is 1:8-1:10, such as 1:8, 1:8.5, 1:9, 1:9.5, 1:10, etc. Using the above parameters for casting helps to improve the coupling between the cast layer and the substrate layer, and improve the utilization rate of the medium.
[0058] In some embodiments, the substrate layer is made of plant fiber fabric, nonwoven fabric, or metal foil (such as copper foil or aluminum foil). Using nonwoven fabric as the substrate layer material results in higher porosity and better adsorption of the slurry. Using metal foil as the substrate layer material helps to further improve the structural strength of the sheet-like matrix, and because metal foil has good thermal conductivity, it helps to increase the smoke generation rate of the aerosol-generated product.
[0059] Taking metal foil as an example, the thickness of the base layer can be 0.01 to 0.015 mm, such as 0.01 mm, 0.011 mm, 0.012 mm, 0.013 mm, 0.014 mm, 0.015 mm, etc.
[0060] In some embodiments, after laying aerosol generating medium particles on the top surface of the cast layer to form a particle layer, the method further includes: coating a slurry onto the top surface of the particle layer to form a coating layer. In this embodiment, the cast layer, the particle layer, and the coating layer are collectively formed into a sheet-like matrix.
[0061] Reference Figure 8In the aerosol generating medium section prepared in this embodiment, the sheet-like matrix 1 forms a coating layer 40 on top of the particle layer 20, which further helps to improve the problem of aerosol generating medium particles 21 falling off the particle layer 20. In addition, the coating layer 40 is formed by coating the surface of the particle layer 20 with a slurry, so that the coating layer 40 can be heated and atomized to generate aerosol. This helps to increase the amount of smoke in large-aperture inhalation, making the smoke burst fast, the smoke volume large, and the consistency good throughout the inhalation process. In addition, the coating layer 40 includes hydrophobic particles, which can prevent the loss of the glycerol and other loads of the sheet-like matrix 1 during the shelf life.
[0062] In some other embodiments, after aerosol generating medium particles are laid on the top surface of the cast layer to form a particle layer, the method further includes laying a coating layer on the top surface of the particle layer. In this embodiment, the cast layer, the particle layer, and the coating layer together form a sheet-like matrix.
[0063] Reference Figure 9 In the aerosol generating medium section prepared in this embodiment, by providing a coating layer 50 on the top surface of the particle layer 20, it is further beneficial to improve the problem of aerosol generating medium particles 21 falling off the particle layer 20. In addition, during the winding process of the sheet matrix 1, the coating layer 50 can also provide a certain support, thereby improving the roundness and production efficiency of the aerosol generating medium section 100.
[0064] In some embodiments, the slurry may be applied to the top surface of the particle layer to form a coating layer first, and then the overlay layer may be laid on the top surface of the coating layer. Alternatively, the overlay layer may be laid on the top surface of the particle layer first, and then the slurry may be applied to the top surface of the overlay layer to form a coating layer.
[0065] In some embodiments, the covering layer is made of plant fiber fabric, non-woven fabric, or metal foil. Non-woven fabric can carry fragrance and increase breathability; furthermore, it provides cushioning and elasticity, facilitating the fit between the heating component of the aerosol generating article and the aerosol generating medium section 100. Exemplarily, the non-woven fabric weighs 12g-20g. Metal foil facilitates heat transfer, thereby improving atomization efficiency and rapid smoke extraction, thus enhancing the vaping experience. Exemplarily, the metal foil thickness is 0.01mm-0.015mm.
[0066] As mentioned above, the base layer can also be made of plant fiber fabric, non-woven fabric or metal foil. In embodiments where a base layer and a covering layer are provided simultaneously, the base layer and the covering layer can be made of the same material or different material. When the base layer and the covering layer are made of the same material, the thickness and / or weight of the base layer and the covering layer can be the same or different material.
[0067] In some embodiments, forming a particle layer by laying aerosol generating medium particles on the top surface of the cast layer includes: uniformly dispersing the aerosol generating medium particles on the top surface of the cast layer to form a particle layer. In this embodiment, it helps to improve the filling rate of the aerosol generating medium particles, thereby increasing the amount of smoke and the number of inhalation ports during inhalation.
[0068] In some embodiments, forming a particle layer by depositing aerosol generating medium particles on the top surface of a cast layer includes: depositing aerosol generating medium particles on the top surface of the cast layer, such that the particle layer forms particle regions and non-particle regions spaced apart along the winding direction of the sheet matrix, with the aerosol generating medium particles distributed in the particle regions. It is understood that the winding direction here is perpendicular to the thickness direction of the sheet matrix.
[0069] In this embodiment, by setting granular regions and non-granular regions at intervals along the winding direction of the sheet matrix, a stable air passage can be formed in the non-granular region, thereby improving the stability of the suction resistance, while the aerosol generating medium particles in the granular region can be heated and atomized to generate aerosol.
[0070] In some embodiments, forming a particle layer by laying aerosol generating medium particles on the top surface of a cast layer includes: laying aerosol generating medium particles on the top surface of a cast layer, such that the particle layer forms a plurality of sub-particle regions distributed along the winding direction of the sheet matrix, wherein the distribution density of aerosol generating medium particles in at least some of the sub-particle regions is different from the distribution density of aerosol generating medium particles in other sub-particle regions.
[0071] It's understandable that in the initial stages of inhalation, areas with relatively low density can generate a larger volume of vapor more quickly, resulting in sufficient aerosol production in the aerosol-generating medium section. Conversely, in the later stages of inhalation, areas with relatively high density decrease in density after the initial inhalation, allowing for the rapid generation of a larger volume of vapor again. Therefore, by configuring the particle layer to include multiple sub-particle regions with varying densities, the aerosol release can be kept roughly consistent across the entire inhalation process, improving inhalation consistency and ultimately enhancing the inhalation experience.
[0072] In this embodiment, the specific distribution of each sub-particle region is not limited. Taking a sheet-like matrix wound into multiple layers as an example, from the outermost layer to the innermost layer of the aerosol generating medium segment, the distribution density of the aerosol generating medium particles can gradually increase, gradually decrease, increase first and then decrease, or decrease first and then increase.
[0073] In some embodiments, forming a particle layer by laying aerosol generating medium particles on the top surface of a cast layer includes: laying aerosol generating medium particles on the top surface of a cast layer, so that the particle layer forms a plurality of sub-particle layers stacked together, wherein the distribution density of aerosol generating medium particles in at least some of the sub-particle layers is different from the distribution density of aerosol generating medium particles in other sub-particle layers.
[0074] Similarly, in this embodiment, by setting the particle layer to include multiple sub-particle layers with different distribution densities, the amount of aerosol released can be kept roughly consistent in the early, middle and late stages of suction, that is, the consistency of suction can be improved, thereby improving the suction experience.
[0075] In this embodiment, the specific distribution of each sub-particle layer is not limited. For example, along the direction away from the casting layer, the distribution density of the aerosol generating medium particles in each sub-particle layer can gradually decrease, gradually increase, increase first and then decrease, or decrease first and then increase.
[0076] In some embodiments, preparing aerosol generating medium particles includes preparing a variety of aerosol generating medium particles with different particle sizes. Laying the aerosol generating medium particles on the top surface of the cast layer to form a particle layer includes: dispersing a variety of aerosol generating particles with different particle sizes on the top surface of the cast layer, so that the particle layer forms a plurality of sub-particle layers stacked together, wherein the particle size of the aerosol generating medium particles in at least some of the sub-particle layers is different from the particle size of the aerosol generating medium particles in other sub-particle layers.
[0077] It is understandable that aerosol generating medium particles of different sizes carry different amounts of smoke-generating medium (effective substances such as glycerol), thus resulting in different aerosol generation rates. In this embodiment, the particle layer comprises multiple stacked sub-particle layers, and the particle layer includes aerosol generating medium particles of different sizes, which allows for rapid smoke generation, ensuring a large initial smoke volume, and maintaining a layered flavor profile or consistent smoke volume as the heating process progresses.
[0078] In this embodiment, the distribution of each sub-particle layer is not limited. For example, along the direction away from the casting layer, the particle size of the aerosol generating medium particles in each sub-particle layer can gradually decrease, gradually increase, increase first and then decrease, or decrease first and then increase.
[0079] In some embodiments, preparing aerosol generating medium particles includes preparing a variety of aerosol generating medium particles with different particle sizes. Laying the aerosol generating medium particles on the top surface of the cast layer to form a particle layer includes: laying a variety of aerosol generating medium particles with different particle sizes on the top surface of the cast layer, so that the particle layer forms a plurality of sub-particle regions distributed along the winding direction of the sheet matrix, wherein the particle size of the aerosol generating medium particles in at least some sub-particle regions is different from the particle size of the aerosol generating medium particles in other sub-particle regions.
[0080] Similarly, in this embodiment, the particle layer includes multiple sub-particle regions distributed along the winding direction of the sheet-like matrix, and the particle layer includes aerosol generating medium particles of different sizes, which can quickly produce smoke, ensure a large initial smoke volume, and ensure the layering of taste or the consistency of smoke volume as the heating process progresses.
[0081] In this embodiment, the specific distribution of each sub-particle region is not limited. Taking a sheet-like matrix wound into multiple layers as an example, from the outermost layer to the innermost layer of the aerosol generating medium segment, the particle size of the aerosol generating medium particles can gradually increase, gradually decrease, increase first and then decrease, or decrease first and then increase.
[0082] In some embodiments, preparing aerosol generating medium particles includes preparing a variety of aerosol generating medium particles with different smoke-generating medium loadings. Laying the aerosol generating medium particles on the top surface of the cast layer to form a particle layer includes: laying a variety of aerosol generating medium particles with different smoke-generating medium loadings on the top surface of the cast layer, so that the particle layer forms a plurality of sub-particle layers stacked together, wherein the smoke-generating medium loading of the aerosol generating medium particles in at least some sub-particle layers is different from the smoke-generating medium loading of the aerosol generating medium particles in other sub-particle layers.
[0083] It is understandable that a lower loading of the smoke-generating medium in aerosol-generating particles results in a lower specific heat capacity, which is conducive to rapid smoke generation. Conversely, a higher loading of the smoke-generating medium in aerosol-generating particles helps maintain a certain amount of smoke during the mid-stage of inhalation. In this embodiment, the particle layer comprises multiple stacked sub-particle layers, and the particle layer includes aerosol-generating medium particles with different loadings of smoke-generating medium. This allows for rapid smoke generation, ensuring a large initial smoke volume, and maintaining a layered flavor profile or consistent smoke volume as the heating process progresses.
[0084] In this embodiment, the specific distribution of each sub-particle layer is not limited. For example, along the direction away from the casting layer, the smoke-generating medium load of the aerosol generating medium particles in each sub-particle layer can gradually decrease, gradually increase, increase first and then decrease, or decrease first and then increase.
[0085] In some embodiments, preparing aerosol generating medium particles includes preparing a variety of aerosol generating medium particles with different smoke-generating medium loadings. Laying the aerosol generating medium particles on the top surface of the cast layer to form a particle layer includes: laying a variety of aerosol generating medium particles with different smoke-generating medium loadings on the top surface of the cast layer, so that the particle layer forms a plurality of sub-particle regions distributed along the winding direction of the sheet-like matrix, wherein the smoke-generating medium loading of the aerosol generating medium particles in at least some sub-particle regions is different from the smoke-generating medium loading of the aerosol generating medium particles in other sub-particle regions.
[0086] Similarly, in this embodiment, the particle layer includes multiple sub-particle regions distributed along the winding direction of the sheet-like matrix, and the particle layer includes aerosol generating medium particles with different smoke-generating medium loadings, which can quickly produce smoke, ensure a large initial smoke volume, and ensure the layering of taste or the consistency of smoke volume as the heating process progresses.
[0087] In this embodiment, the specific distribution of each sub-particle region is not limited. Taking a sheet-like matrix wound into multiple layers as an example, from the outermost layer to the innermost layer of the aerosol generating medium segment, the smoke-generating medium loading of the aerosol generating medium particles can gradually increase, gradually decrease, increase first and then decrease, or decrease first and then increase.
[0088] In some embodiments, the preparation of aerosol generating medium particles specifically includes: preparing a substrate having a plurality of accommodating pores, the accommodating pores forming openings on the outer surface of the substrate; and allowing a smoke-generating medium and / or an aroma-enhancing medium to enter the accommodating pores to obtain aerosol generating medium particles.
[0089] In this embodiment, a substrate with multiple accommodating pores is used to prepare aerosol generating medium particles. This helps to increase the loading of smoke-generating medium and / or aroma-enhancing medium in the aerosol generating medium particles, thereby improving the inhalation experience of the aerosol generating medium segment.
[0090] In this embodiment, the substrate can be obtained by processing the porous material through methods such as cutting, shaping, and sieving. The porous material here can be a natural porous material, that is, a structure with multiple pores that has not undergone artificial processing or has minimal artificial processing, such as rush pith or bamboo fungus. Alternatively, the porous material can be a material formed from natural materials through foaming processes, such as foamed bamboo. Or, the porous material can be a synthetic material. This embodiment does not impose any limitations on this.
[0091] In some embodiments, the porous material includes at least one of the following: rush pith, bamboo fungus, freeze-dried plants, and foamed plants. As an example, the freeze-dried plants can be freeze-dried fruits, vegetables, etc., and the foamed plants can be foamed bamboo. It should be noted that since the aerosol generating medium particles need to be heated during actual use, in order to minimize the generation of unpleasant odors during heating, when selecting vegetables and fruits as porous materials, varieties with lower sugar content should be chosen whenever possible.
[0092] In this embodiment, the porous material is selected from natural plants. Compared with artificially synthesized porous materials, it can further reduce the preparation cost of aerosol generating medium particles and reduce the possibility that aerosol generating medium particles will produce unpleasant odors and / or harmful gases when heated.
[0093] In some embodiments, introducing the smoke-generating medium and / or the aroma-enhancing medium into the receiving hole includes mixing the substrate with the smoke-generating medium and / or the aroma-enhancing medium and stirring under vacuum or pressure conditions to introduce the smoke-generating medium and / or the aroma-enhancing medium into the receiving hole.
[0094] In this embodiment, the mixture of the substrate and the smoke-generating medium and / or the aroma-enhancing medium is stirred under vacuum or pressurized conditions. This helps to increase the amount of smoke-generating medium and / or aroma-enhancing medium adsorbed by the substrate, thereby helping to increase the amount of smoke and / or the aroma intensity during the inhalation process.
[0095] In some embodiments, mixing the substrate with a smoke-generating medium and / or a flavoring medium and stirring under vacuum or pressure conditions includes: first mixing the substrate with the smoke-generating medium and stirring under vacuum or pressure conditions; and then mixing the flavoring medium with the substrate and stirring under vacuum or pressure conditions.
[0096] In this embodiment, the substrate is first made to adsorb the smoke-generating medium, and then the substrate is made to adsorb the flavoring medium. The advantage of this secondary adsorption method is that most of the flavoring medium will be located near the outlet of the receiving hole, forming a barrier between the smoke-generating medium and the moisture in the external environment. This reduces the possibility of the smoke-generating medium getting damp and moldy during storage and improves the smoking experience.
[0097] In some embodiments, stirring under vacuum conditions includes stirring at a vacuum level of 0.085-0.095 MPa, with the vacuum being broken once every set time interval during stirring. In this embodiment, the stirring duration and the set time interval are not limited; as an example, the stirring duration can be 20-30 minutes, the set time interval can be 2-10 minutes, and the vacuum is broken 2-15 times during stirring. In this embodiment, breaking the vacuum once every set time interval during stirring allows the pressure difference during vacuum breaking to force the fuming medium and / or aroma-enhancing medium into the receiving pore, thereby further increasing the adsorption capacity.
[0098] In some embodiments, the slurry includes a base material and a fuming medium.
[0099] In some embodiments, the base material comprises powder of one or more herbal plants. In this embodiment, the use of herbal plant powder as the base material has the advantage of being readily available as a natural material, thus reducing preparation costs. Another advantage is that herbal plants are less likely to release unpleasant odors and / or harmful substances when heated in the aerosol generation medium section, which helps improve the inhalation experience and safety.
[0100] In some embodiments, the herbaceous plants specifically include at least one of honeysuckle, mulberry leaves, chrysanthemum, dandelion, kudzu root, ophiopogon japonicus, almond, hyacinth bean, and lycium bark. These herbaceous plants are inexpensive and, when heated, release virtually no unpleasant odors and / or substances harmful to human health.
[0101] In some embodiments, the powder of herbal plants specifically refers to powder of 160-200 mesh.
[0102] In some embodiments, the slurry further includes fibers and / or flavoring media. Including fibers in the slurry helps to further improve the toughness of the sheet-like matrix obtained by casting, increasing its winding success rate and reducing losses during winding. Including flavoring media in the slurry helps to enhance the flavor during inhalation of the aerosol-generating medium segment, improving the inhalation experience.
[0103] In some embodiments, the fiber specifically comprises broadleaf plant fiber, and the broadleaf plants include at least one of poplar, Eucalyptus grandis, and mulberry branches. It is understood that broadleaf plant fiber is a natural plant material, which further reduces preparation costs and further reduces the possibility that the aerosol generating medium will produce unpleasant odors and / or harmful gases when heated.
[0104] In some embodiments, the flavoring medium includes at least one of a flavoring agent, a nicotine preparation, and a cooling agent. Those skilled in the art can choose according to actual usage requirements.
[0105] In some embodiments, the preparation of the slurry specifically includes, by weight, mixing 30-35 parts of base material, 30-35 parts of smoking medium gel, 10-15 parts of plant fiber solution, 10-15 parts of water, 10-15 parts of fragrance, 1-2 parts of nicotine preparation and / or cooling agent to form a slurry. The slurry with this formulation has good flowability, and the sheet substrate obtained after casting has good toughness, facilitating subsequent winding and cutting.
[0106] In this embodiment, the plant fiber solution specifically refers to an aqueous solution of plant fiber, such as an aqueous solution with a mass fraction of 1.5%.
[0107] In some embodiments, after the step of laying aerosol generating medium particles on the top surface of the cast layer to form a particle layer, the method further includes: sequentially performing a first stage of heating, a second stage of heating, and a third stage of heating to shape the cast layer and the particle layer into a sheet-like matrix, wherein the temperatures of the first stage of heating, the second stage of heating, and the third stage of heating increase sequentially.
[0108] In this embodiment, a three-stage heating method with progressively increasing temperatures is used to shape the cast layer and the base layer into a sheet-like matrix. This heating method helps to reduce the water content in the sheet-like matrix, thereby improving the suction experience of the aerosol generation medium section.
[0109] In this embodiment, the specific heating methods and temperatures for the first, second, and third stages of heating are not limited. As an example, all three stages of heating can be performed using hot air heating. This helps accelerate the evaporation of moisture in the cast layer during the heating process, thereby further reducing the moisture content in the sheet matrix. Of course, at least one of the first, second, and third stages of heating can also be achieved using heating methods other than hot air heating. In an embodiment where all three stages of heating use hot air heating, the hot air temperature for the first stage can be 70-75°C, the hot air temperature for the second stage can be 75-80°C, and the hot air temperature for the third stage can be 90-95°C.
[0110] In some embodiments, the method further includes drying the sheet matrix before winding it into an aerosol generating medium segment. In some of the above embodiments, a heat treatment is performed after forming the granular layer, primarily to set the shape of the cast layer; of course, moisture evaporation also occurs during this process. In this embodiment, however, the drying treatment further reduces the moisture content of the sheet matrix after it has been set. In this embodiment, the specific drying process is not limited; as an example, drying can be performed at 105-110°C for 3-5 minutes.
[0111] Embodiments of this application also provide an aerosol generating medium segment, which is prepared by the aerosol generating medium segment preparation method described in any of the above embodiments.
[0112] Embodiments of this application also provide an aerosol generating article comprising an aerosol generating medium segment as described in any of the above embodiments.
[0113] The specific structure of the aerosol generating product is not limited. As an example, the aerosol generating product also includes a functional section located at one end of the aerosol generating medium section. The functional section includes a cooling section and a filtration section. The aerosol generating product is used in conjunction with an aerosol generating device with a heating component. Specifically, the heating component heats and atomizes the aerosol generating medium section to generate aerosols, and the user draws in the filtered aerosols through the filtration section.
[0114] The cooling section is located between the filtration section and the aerosol generation medium section. It is used to cool the aerosol before it is filtered in the filtration section, thereby reducing the temperature of the aerosol and alleviating the "burning" sensation when users inhale the aerosol.
[0115] There are various heating methods for heating components. For example, heating methods include center heating and peripheral heating. Center heating refers to the heating component being inserted into the aerosol generating medium section to bake and heat the aerosol generating medium section from the inside out. Peripheral heating refers to the heating component being positioned around the aerosol generating product to bake and heat the aerosol generating medium section from the outside in. These heating methods can specifically include resistance heating, electromagnetic induction heating, infrared heating, microwave heating, laser heating, air heating, electric field heating, carbon source heating, plasma heating, etc., and are not specifically limited here.
[0116] It should be noted that aerosol-generating products rely on the aerosol-generating medium section to produce aerosols, while the functional section does not produce aerosols.
[0117] In the description of this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine different embodiments or examples described in this application, as well as features of different embodiments or examples.
[0118] The above description is merely a preferred embodiment of this application and is not intended to limit the 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 scope of protection of this application.
Claims
1. A method for preparing an aerosol generating medium segment, characterized in that, The method includes: Preparation of aerosol generating medium particles and slurry; The slurry is cast to form a cast layer; The aerosol generating medium particles are laid on the top surface of the cast layer to form a particle layer, and the cast layer and the particle layer together form a sheet-like matrix; The sheet-like matrix is wound to form an aerosol generating medium segment.
2. The method according to claim 1, characterized in that, The step of casting the slurry to form a cast layer includes: The slurry is cast onto the top surface of the substrate layer to form the cast layer, and the substrate layer, the cast layer, and the particle layer together form the sheet matrix.
3. The method according to claim 2, characterized in that, The base layer can be made of plant fiber fabric, non-woven fabric, or metal foil.
4. The method according to claim 1, characterized in that, After the aerosol generating medium particles are laid on the top surface of the cast layer to form a particle layer, the method further includes: The slurry is coated onto the top surface of the particle layer to form a coating layer, and the cast layer, the particle layer, and the coating layer together form the sheet-like matrix; or The coating layer is laid on the top surface of the particle layer, and the cast layer, the particle layer and the coating layer together form the sheet matrix.
5. The method according to claim 4, characterized in that, The covering layer is made of plant fiber fabric, non-woven fabric, or metal foil.
6. The method according to claim 1, characterized in that, The step of laying the aerosol generating medium particles on the top surface of the cast layer to form a particle layer includes: The aerosol generating medium particles are uniformly dispersed on the top surface of the cast layer to form a particle layer; or... The aerosol generating medium particles are laid on the top surface of the cast layer, so that the particle layer forms particle regions and particle-free regions spaced apart along the winding direction of the sheet matrix, and the aerosol generating medium particles are distributed in the particle regions; or The aerosol generating medium particles are laid on the top surface of the cast layer, forming multiple sub-particle regions distributed along the winding direction of the sheet-like matrix. The distribution density of the aerosol generating medium particles in at least some of these sub-particle regions differs from the distribution density of the aerosol generating medium particles in other sub-particle regions; or... The aerosol generating medium particles are laid on the top surface of the cast layer, so that the particle layer forms a plurality of sub-particle layers stacked together. The distribution density of the aerosol generating medium particles in at least some of the sub-particle layers is different from the distribution density of the aerosol generating medium particles in other sub-particle layers.
7. The method according to claim 1, characterized in that, The preparation of aerosol generating medium particles includes preparing a variety of aerosol generating medium particles with different particle sizes. The step of laying the aerosol generating medium particles on the top surface of the cast layer to form a particle layer includes: dispersing a variety of aerosol generating particles with different particle sizes on the top surface of the cast layer, so that the particle layer forms multiple sub-particle layers stacked together, wherein the particle size of the aerosol generating medium particles in at least some of the sub-particle layers is different from the particle size of the aerosol generating medium particles in other sub-particle layers; or... The step of laying the aerosol generating medium particles on the top surface of the cast layer to form a particle layer includes: laying a variety of aerosol generating particles with different particle sizes on the top surface of the cast layer, so that the particle layer forms a plurality of sub-particle regions distributed along the winding direction of the sheet matrix, wherein the particle size of the aerosol generating medium particles in at least some of the sub-particle regions is different from the particle size of the aerosol generating medium particles in other sub-particle regions.
8. The method according to claim 1, characterized in that, The preparation of aerosol generating medium particles includes preparing a variety of aerosol generating medium particles with different smoke-generating medium loadings. The step of laying the aerosol generating medium particles on the top surface of the cast layer to form a particle layer includes: laying aerosol generating medium particles with different smoke-generating medium loadings on the top surface of the cast layer, so that the particle layer forms multiple sub-particle layers stacked together, wherein the smoke-generating medium loading of the aerosol generating medium particles in at least some of the sub-particle layers is different from the smoke-generating medium loading of the aerosol generating medium particles in other sub-particle layers; or... The step of laying the aerosol generating medium particles on the top surface of the cast layer to form a particle layer includes: laying aerosol generating medium particles with different smoke-generating medium loadings on the top surface of the cast layer, so that the particle layer forms a plurality of sub-particle regions distributed along the winding direction of the sheet matrix, wherein the smoke-generating medium loading of the aerosol generating medium particles in at least some of the sub-particle regions is different from the smoke-generating medium loading of the aerosol generating medium particles in other sub-particle regions.
9. The method according to claim 1, characterized in that, The preparation of aerosol generating media particles includes: A substrate is prepared having a plurality of receiving holes, the receiving holes forming openings on the outer surface of the substrate; The smoke-generating medium and / or aroma-enhancing medium are introduced into the receiving hole to obtain aerosol-generating medium particles.
10. The method according to claim 9, characterized in that, The step of introducing the smoke-generating medium and / or the aroma-enhancing medium into the receiving hole includes: mixing the substrate with the smoke-generating medium and / or the aroma-enhancing medium, and stirring under vacuum or pressure conditions to introduce the smoke-generating medium and / or the aroma-enhancing medium into the receiving hole; and / or The preparation of the substrate includes: cutting a porous material to form the substrate, wherein the porous material includes at least one of the following: rush pith, bamboo fungus, freeze-dried plants, and plants that have undergone foaming treatment.
11. The method according to claim 1, characterized in that, After the step of laying the aerosol generating medium particles on the top surface of the cast layer to form a particle layer, the method further includes: sequentially performing a first stage of heating, a second stage of heating, and a third stage of heating to shape the cast layer and the particle layer into the sheet-like matrix, wherein the temperatures of the first stage of heating, the second stage of heating, and the third stage of heating increase sequentially; and / or Before winding the sheet-like matrix to form an aerosol generating medium segment, the method further includes drying the sheet-like matrix.
12. An aerosol generating medium section, characterized in that, The aerosol generating medium segment is prepared by the aerosol generating medium segment preparation method according to any one of claims 1-11.
13. An aerosol-generating product, characterized in that, The aerosol generating article includes the aerosol generating medium segment as described in claim 12.