Aerosol-generating substrate for heat-not-burn products and preparation method and application thereof
By using a combination of loose, porous carrier materials and flavoring materials, the problems of high draw resistance and high processing difficulty in the heating non-combustible aerosol generation matrix are solved, resulting in a better smoking experience and richer aroma.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2026-03-20
AI Technical Summary
Existing heated non-combustible aerosol generating matrices are mostly made of tobacco shreds or granules, resulting in high draw resistance and high processing difficulty, leading to an unsatisfactory smoking experience.
Using a loose and porous carrier material as the matrix, the flavoring material is attached to its outer and/or inner surface. The absorption resistance is adjusted by controlling the porosity, and materials such as puffed tobacco stems, corn stalks, sugarcane bagasse, or activated carbon are used as carriers to simplify the processing.
It reduces processing difficulty, improves aroma richness and smoking experience, simplifies draw resistance adjustment, enhances the loading capacity of flavoring materials, and improves the aroma quality of heated tobacco products.
Smart Images
Figure CN121694479A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of tobacco product technology, and more specifically, to an aerosol generation matrix for heat-resistant non-combustible products, its preparation method, and its application. Background Technology
[0002] As people's living standards and health awareness improve, traditional cigarettes, due to their higher combustion temperatures, produce smoke containing more harmful substances, significantly impacting the traditional cigarette market. Heated tobacco products, on the other hand, are gaining increasing acceptance because they effectively reduce the tar and harmful substances produced by traditional cigarette combustion.
[0003] Existing heated non-combustible aerosol generating matrices are mostly made of tobacco shreds or granular tobacco products. Aerosol generating matrices composed of tobacco shreds have high draw resistance and an unsatisfactory smoking experience. Granular aerosol generating matrices are easy to break during processing and are difficult to process.
[0004] In view of this, the present invention is proposed. Summary of the Invention
[0005] The purpose of this invention is to provide an aerosol generation matrix for heating non-combustible products, its preparation method, and its application.
[0006] This invention is implemented as follows:
[0007] In a first aspect, the present invention provides an aerosol generating matrix for heat-resistant non-combustible articles, comprising a flavoring material and a loose, porous carrier material, wherein the flavoring material is attached to the outer and / or inner surface of the carrier material, and the volume of the carrier material is 0.1–2 cm³. 3 .
[0008] In a second aspect, the present invention provides a method for preparing an aerosol generating matrix as described in any of the foregoing embodiments, comprising coating a flavoring material on the outer surface and / or inner surface of a loose and porous carrier material.
[0009] Thirdly, the present invention provides the application of an aerosol generating matrix as described in any of the foregoing embodiments or an aerosol generating matrix prepared by any of the foregoing embodiments in heated non-combustible tobacco products.
[0010] The present invention has the following beneficial effects:
[0011] This invention provides an aerosol generating matrix for heat-not-burn products, its preparation method, and its application. By using a monolithic carrier material as the matrix for carrying flavoring materials, the aerosol generating matrix provided by this invention has a fixed shape. The flavoring materials only need to be attached to the surface of the carrier material, reducing processing difficulty. Simultaneously, due to the porous internal and surface structure of the carrier material, it can carry more flavor substances, resulting in a better vaping experience. Furthermore, the draw resistance can be directly controlled by adjusting the porosity of the carrier material, simplifying the draw resistance adjustment process. In addition, the porous structure of the carrier material greatly increases the loading capacity of the flavoring materials, enhancing the aroma of heat-not-burn tobacco products. Attached Figure Description
[0012] To more clearly illustrate the technical solutions of the embodiments of the present invention, 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 the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the structure of the aerosol generation matrix for heating non-combustible products provided in Embodiment 1 of the present invention. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments whose manufacturers are not specified are all conventional products that can be purchased commercially.
[0015] The features and performance of the present invention will be further described in detail below with reference to embodiments.
[0016] Traditional tobacco products mostly use shredded tobacco as the main aerosol-generating matrix. However, the preparation of shredded tobacco is complex, and when shredded tobacco is used as the aerosol-generating matrix, the draw resistance of the tobacco products is relatively high or difficult to control. In addition, there are currently some granular aerosol-generating matrices, which are made by compounding raw materials with smoking properties or special aromas into particles and then filling them into tobacco products. However, granular aerosol-generating matrices are easily broken during processing, making processing difficult. Therefore, the inventors propose the following solution.
[0017] In a first aspect, the present invention provides an aerosol generating matrix for heating non-combustible articles, comprising a flavoring material and a loose and porous carrier material, wherein the flavoring material is attached to the outer surface and / or inner surface of the carrier material.
[0018] The volume of the carrier material is 0.1–2 cm³. 3 Preferably 0.2–1 cm 3 More preferably, it is 0.4–0.6 cm. 3 The volume of the carrier material is related to the size of the aerosol-generating matrix and also to the amount of flavoring material attached.
[0019] By using a carrier material as a whole to carry the fragrance, there's no need for complex processes like slicing or granulation. A suitable, loose, porous carrier material can be directly selected, cut into appropriate small segments, and used as the carrier material itself. This material can be scented or odorless. By coating its surface with a fragrance-enhancing material, when the aerosol-generating matrix is heated, the fragrance-enhancing material and the carrier material can generate aerosols. By changing the types of fragrance-enhancing and carrier materials, the variety and intensity of aromas in the aerosol-generating matrix can be enriched. Simultaneously, the loose, porous carrier material effectively reduces the draw resistance of the aerosol-generating matrix, ensuring a better vaping experience.
[0020] Since the carrier material has a loose and porous structure, the flavoring material can adhere to the outer surface of the carrier material or extend into the pores inside the carrier material and adhere to the inner surface of the pores. However, it is advisable to avoid blocking the internal pores of the carrier as much as possible. Therefore, preferably, the flavoring material is adhered to the outer surface of the carrier material.
[0021] In an optional embodiment, the absorption resistance of the aerosol-generating matrix is 0.1 Pa / mm. 3 ~5Pa / mm 3 Preferably, the absorption resistance of the aerosol-generating matrix is 0.5 Pa / mm. 3 ~1Pa / mm 3 For example, the aerosol generation matrix provided by this invention can have an absorption resistance of 0.1 Pa / mm. 3 0.5Pa / mm 3 0.8Pa / mm 3 1.0 Pa / mm 3 1.2Pa / mm 3 1.4Pa / mm 3 1.5Pa / mm 3 2.0Pa / mm 3 2.5Pa / mm 3 3.0Pa / mm 3 3.5Pa / mm 3 4.0 Pa / mm 3 4.5Pa / mm 3 Or 5.0 Pa / mm 3Any value in the range, or any range of two values, or any point in the range.
[0022] Preferably, the loading rate of the flavoring material on the carrier material is 50% to 500%. Since the carrier material has a loose and porous structure, the total surface area of the carrier material is large, which provides a larger adhesion area for the flavoring material, thereby increasing the loading rate of the flavoring material on the carrier material and making the aroma and flavor of the aerosol generation matrix richer.
[0023] In an optional embodiment, in order to ensure the loading of the flavoring material while avoiding excessive influence on the absorption resistance of the aerosol generation matrix, the mass ratio of the carrier material to the flavoring material is 1:(0.1-5); preferably, the mass ratio of the carrier material to the flavoring material is 1:(1-3).
[0024] For example, the mass ratio of the carrier material to the flavoring material is any one of the following values: 1:0.1, 1:1, 1:1.5, 1:2, 1:2.5, 1:3, 1:4, or 1:5, or a range of any two values, or any point within the range mentioned above.
[0025] In an optional embodiment, to ensure the porous nature of the carrier material, the density of the carrier material is 0.01 g / cm³. 3 ~5g / cm 3 For example, it could be 0.01 g / cm³. 3 1.00g / cm 3 2.00g / cm 3 3.00g / cm 3 4.00g / cm 3 Or 5.00g / cm 3 Any value in the range, or any range of two values, or any point in the range.
[0026] Preferably, the carrier material can be an aromatic material or an odorless material, such as any of porous plant tissue, porous compounds, and biscuits.
[0027] Preferably, the porous plant tissue includes any one of puffed tobacco stems, corn stalks, or sugarcane bagasse.
[0028] Preferably, the porous compound is activated carbon.
[0029] More preferably, the carrier material is expanded tobacco stem. Tobacco stem is the coarse, hard vein of tobacco leaves, accounting for about 25% to 30% of the leaf weight. Existing tobacco products use tobacco leaves with the stems removed as the main raw material, and the tobacco stems are directly discarded as waste. As a major tobacco producer, my country produces hundreds of thousands of tons of tobacco stems every year. If they are directly discarded, it will cause a lot of waste.
[0030] Therefore, this invention utilizes expanded tobacco stems as a carrier material, enabling the reuse of these discarded tobacco stems. After microwave expansion, the internal moisture of the tobacco stems is vaporized, and the generated steam creates micropores inside the raw material. The steam expands in volume under high temperature and pressure, resulting in a loose and porous interior for the expanded tobacco stems, which expand in volume relative to their unexpanded state. They can be directly cut into small segments of a certain length as needed to serve as the carrier material for this invention. The raw materials are widely available, and waste utilization is achieved. The carrier material does not require special treatment; commercially available expanded tobacco stems can be used directly. The preparation process for the aerosol generation matrix is also simpler.
[0031] In addition, puffed tobacco stems can also produce a rich roasted aroma during the heating process without producing other off-flavors. When combined with flavoring materials, they can enhance the aroma of tobacco. Their aroma complements the aroma of tobacco well, making them an ideal raw material for carrier materials.
[0032] Furthermore, other plant tissues, such as corn stalks or sugarcane bagasse, possess a loose and porous structure and produce a pleasant plant aroma during heating, making them suitable raw materials for carrier materials. Since sugarcane bagasse has an irregular shape, it needs to be shaped if used as a carrier material. This involves adding a binding agent and shaping the bagasse in a mold to obtain a carrier material of a specific shape (e.g., cylinder, prism, or sphere). When the porosity of the shaped sugarcane bagasse is low, resulting in high suction resistance, perforation can be used to reduce the suction resistance; see the subsequent preparation method section for details.
[0033] Furthermore, activated carbon can also be chosen as the carrier material. Like bagasse, activated carbon needs to be shaped before it can be used as a carrier material. Activated carbon does not have a special odor, which can make the aroma-enhancing materials attached to its surface have a purer aroma.
[0034] In addition, biscuits can also be used as carrier materials, such as commercially available thumb biscuits or stick or bar-shaped biscuits. These biscuits can be cut into small pieces like tobacco stems and used directly. Because the inside of the biscuit is loose and porous, it helps to reduce the resistance to inhalation.
[0035] In an alternative embodiment, the shape of the aerosol generating matrix includes any one of a cylinder, a sphere, or a polygonal prism.
[0036] Preferably, the polygonal prism is a cuboid or a cube.
[0037] Preferably, when the aerosol generating matrix is cylindrical, the diameter of the cylinder is 3mm to 20mm and the height is 5mm to 30mm.
[0038] Preferably, when the aerosol generating matrix is spherical, the diameter of the sphere is 5mm to 20mm.
[0039] Preferably, when the shape of the aerosol generating matrix is a cuboid, the length of the cuboid is 3mm to 10mm, the width is 3mm to 10mm, and the height is 5mm to 30mm.
[0040] Preferably, when the shape of the aerosol generating matrix is a cube, the diameter of the cube is 5 mm to 20 mm.
[0041] In an optional embodiment, the flavoring material includes 5 to 90 parts by weight of fragrance and 5 to 35 parts by weight of smoke-generating agent.
[0042] Preferably, the flavoring material includes 80 parts by weight of fragrance and 20 parts by weight of smoke-generating agent.
[0043] Preferably, the smoke-generating agent includes at least one of propylene glycol, glycerol, 1,4-butanediol, and sorbitol.
[0044] Preferably, the fragrance includes natural fragrance and / or synthetic fragrance; wherein the synthetic fragrance may be an artificially synthesized chemical substance with aroma that does not exist naturally, or it may be a natural equivalent fragrance that is artificially synthesized and has the same structure as the natural fragrance, or it may be at least one of the fragrances prepared by microbial methods.
[0045] In a second aspect, the present invention provides a method for preparing an aerosol generating matrix as described in any of the foregoing embodiments, comprising coating a flavoring material on the outer surface and / or inner surface of a loose and porous carrier material.
[0046] In optional embodiments, the coating method includes at least one of brushing, spraying, or dipping.
[0047] For aerosol generating matrices with high internal porosity, or where it is desired to increase the loading rate of flavoring materials, dip coating or spray coating can be used to ensure that the pores inside the carrier material can also support the flavoring materials. For aerosol generating matrices with low internal porosity, or where the loading rate of flavoring materials is not critical, brush coating or spray coating can be used to prevent the pores inside the carrier material from being blocked by the flavoring materials.
[0048] Preferably, the dip coating involves immersing the carrier material in a liquid flavoring material. During the immersion process, the temperature of the flavoring material is 18°C to 28°C, and the immersion time is 0.1 h to 2 h.
[0049] Preferably, the coating process further includes drying the coated carrier material at a temperature of 55°C to 105°C for a time of 5 min to 45 min, preferably 15 min to 45 min.
[0050] Preferably, the coating can be applied once or repeatedly. When the coating is applied repeatedly, the drying time after each coating is 5 to 15 minutes. Depending on the number of coatings, the mass ratio of the flavoring material to the carrier material in each coating is [(0.1 to 10): 1] / n, preferably [(0.5 to 5): 1] / n, where n is the total number of coatings.
[0051] In an optional embodiment, the preparation of the loose and porous carrier material includes microwave expansion or shaping of the raw material of the carrier material.
[0052] The tobacco stems are microwave-expanded, and the bagasse and activated carbon are shaped into a porous structure. Commercially available materials can also be used for the expanded tobacco stems.
[0053] The porous structure of the carrier material is one of the keys to controlling adsorption resistance. In addition, it is also necessary to control the amount of flavoring material adhered to the carrier material surface to prevent the flavoring material from clogging the porous structure of the carrier material. When the aerosol generation matrix obtained by coating the carrier material with flavoring material has high adsorption resistance, it can be reduced by perforation.
[0054] Preferably, it also includes a suction resistance greater than 1 Pa / mm. 3 The aerosol generation matrix is perforated, with each perforation having a diameter of 0.1–1 mm. This ensures the strength of the aerosol generation matrix while maintaining the required porosity and absorption resistance.
[0055] Preferably, the drilling process includes any one of laser drilling, electrostatic drilling, or plasma drilling.
[0056] Thirdly, the present invention provides the application of an aerosol generating matrix as described in any of the foregoing embodiments or an aerosol generating matrix prepared by any of the foregoing embodiments in heated non-combustible tobacco products.
[0057] The aerosol generating matrix provided by this invention can be directly used as a smoke-generating section to prepare heated non-combustible cigarettes, or it can be used alone as a disposable tobacco cartridge in heated tobacco devices with a filter section.
[0058] Example 1
[0059] This embodiment provides an aerosol generation matrix for heating non-combustible products, comprising a carrier material and a flavoring material in a mass ratio of 1:2.
[0060] The carrier material is expanded tobacco stem with a density of 0.06–0.1 g / cm³. 3 It is cylindrical in shape, with a diameter of 7mm and a height of 12mm.
[0061] Flavoring materials include flavorings and smoke-generating agents. The flavorings include 20 parts of natural tobacco extract, 55 parts of synthetic flavorings, and 5 parts of natural single-component flavorings. The smoke-generating agents include 5 parts of propylene glycol and 15 parts of glycerol.
[0062] This embodiment provides a method for preparing the above-mentioned aerosol-generating matrix for heating non-combustible products, including the following steps:
[0063] Please refer to Figure 1 , Figure 1 The cylinder on the left is the structure of an expanded tobacco stem. The above-mentioned flavoring material is repeatedly brushed onto the surface of the expanded tobacco stem three times. After each coating, it is dried at 85°C for 15 minutes to finally obtain the aerosol generation matrix.
[0064] The aforementioned aerosol-generating matrix was then assembled into the cigarette structure of a low-temperature cigarette, and the absorption resistance of the assembled cigarette structure was tested using a smoking machine. The absorption resistance of the cigarette structure itself (excluding the smoke-generating matrix) was 200–250 Pa / cigarette, while the overall absorption resistance of the cigarette structure was measured at 1030 Pa / cigarette. Based on this, the absorption resistance of the aforementioned aerosol-generating matrix was calculated to be 1.74 Pa / mm². 3 The suction resistance exceeds 1 Pa / mm 3 Therefore, laser drilling is used, with each hole having a diameter of 0.5mm, and a total of 7 holes are drilled. Figure 1 As shown on the right side of the middle section.
[0065] Testing showed that the absorption resistance of the aerosol-generating matrix after drilling was 0.85 Pa / mm. 3 The loading rate of the flavoring material on the carrier material is 200%.
[0066] Example 2
[0067] This embodiment provides an aerosol generation matrix for heating non-combustible products, comprising a carrier material and a flavoring material in a mass ratio of 1:2.
[0068] The carrier material is expanded tobacco stem with a density of 0.06–0.1 g / cm³. 3 It is cylindrical in shape, with a diameter of 7mm and a height of 12mm.
[0069] Flavoring materials include flavorings and smoke-generating agents. The flavorings include 20 parts of natural tobacco extract, 55 parts of synthetic flavorings, and 5 parts of natural single-component flavorings. The smoke-generating agents include 5 parts of propylene glycol and 15 parts of glycerol.
[0070] This embodiment provides a method for preparing the above-mentioned aerosol-generating matrix for heating non-combustible products, including the following steps:
[0071] The above-mentioned flavoring material was repeatedly brushed onto the surface of the cut cylindrical expanded tobacco stems three times. After each coating, the material was dried at 85°C for 15 minutes to finally obtain the aerosol generation matrix.
[0072] The aforementioned aerosol-generating matrix was then assembled into the cigarette structure of a low-temperature cigarette, using a smoking machine to test the draw resistance of the assembled structure. The draw resistance of the cigarette structure itself (excluding the smoke-generating matrix) was 200–250 Pa / cigarette, while the overall draw resistance of the cigarette structure was measured at 1030 Pa / cigarette. Calculations show that the draw resistance of the aerosol-generating matrix provided in this embodiment is 1.5 Pa / mm². 3 Drilling will not be performed for the time being.
[0073] Testing showed that the flavoring material provided in this embodiment had a loading rate of 200% on the carrier material.
[0074] Example 3
[0075] This embodiment provides an aerosol generation matrix for heating non-combustible products, comprising a carrier material and a flavoring material in a mass ratio of 1:2.
[0076] The carrier material is a rod-shaped ladyfingers with a density of 0.3–0.5 g / cm³. 3 It is cylindrical in shape, with a diameter of 7mm and a height of 12mm.
[0077] Flavoring materials include flavorings and smoke-generating agents. The flavorings include 20 parts of natural tobacco extract, 55 parts of synthetic flavorings, and 5 parts of natural single-component flavorings. The smoke-generating agents include 5 parts of propylene glycol and 15 parts of glycerol.
[0078] This embodiment provides a method for preparing the above-mentioned aerosol-generating matrix for heating non-combustible products, including the following steps:
[0079] The above-mentioned flavoring material was brushed onto the surface of the ladyfingers. After coating, the ladyfingers were dried at 85°C for 30 minutes to obtain an aerosol generation matrix.
[0080] The aforementioned aerosol-generating matrix was then assembled into the cigarette structure of a low-temperature cigarette, and the absorption resistance of the assembled cigarette structure was tested using a smoking machine. The absorption resistance of the cigarette structure itself (excluding the smoke-generating matrix) was 200–250 Pa / cigarette, and the overall absorption resistance of the cigarette structure was measured to be 643 Pa / cigarette. Calculations show that the absorption resistance of the aerosol-generating matrix provided in this embodiment is 0.9 Pa / mm². 3At 0.5-1 Pa / mm 3 Therefore, no drilling is required.
[0081] Testing showed that the flavoring material of the aerosol generation matrix provided in this embodiment had a loading rate of 200% on the carrier material.
[0082] Comparative Example 1
[0083] This comparative example provides an aerosol generating matrix for use in heated non-combustible products, wherein the aerosol generating matrix is the smoke-generating part of a HEETS e-cigarette cartridge.
[0084] Comparative Example 2
[0085] This comparative example provides an aerosol generating matrix for heat-resistant non-combustible products, which differs from Example 1 only in that the ratio of carrier material to flavoring material is 1:0.05.
[0086] Comparative Example 3
[0087] This comparative example provides an aerosol generating matrix for heat-resistant non-combustible products, differing from Example 1 only in that the ratio of carrier to coating material is 1:6. Laser drilling is used, with each hole having a diameter of 0.5 mm, and 11 holes are drilled in total.
[0088] Experimental Example 1
[0089] The aerosol generating matrices provided in Examples 1-3 and Comparative Examples 1-3 were equilibrated for 4 hours under constant temperature and humidity conditions of (25±2)℃ and (35±5)%RH. The smoke concentration was then measured using a heated non-combustible comprehensive tester, and data from ports 3-10 were collected. The results are shown in Table 1.
[0090] Table 1 Smoke Concentration of Aerosol Generating Matrix
[0091]
[0092]
[0093] As shown in Table 1, the aerosol generating matrix provided in this embodiment of the invention has a higher smoke concentration and a more abundant aroma. Comparative Example 1, due to the limited amount of flavoring material carried by the smoke generator and the physical properties of the tobacco itself, has a low smoke concentration and a small amount of aroma in its aerosol generating matrix. Example 2, due to the lack of perforations, has a higher draw resistance, making it more difficult to draw. The internal heating of the smoke generator is uneven, resulting in a slightly lower initial concentration followed by a slow increase. Example 3 has a higher smoke concentration, but the aroma changes. Comparative Example 2 has a lower smoke concentration due to less flavoring material and relatively less smoke generator. Comparative Example 3 has a moderate initial smoke concentration, but the later stage shows a slightly more significant decrease in smoke concentration, and the processing difficulty increases considerably.
[0094] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. An aerosol-generating matrix for heating non-combustible products, characterized in that, It includes a flavoring material and a loose, porous carrier material, wherein the flavoring material is attached to the outer surface and / or inner surface of the carrier material; The volume of the carrier material is 0.1–2 cm³. 3 .
2. The aerosol generation matrix according to claim 1, characterized in that, The absorption resistance of the aerosol-generating matrix is 0.1 Pa / mm. 3 ~5Pa / mm 3 ; Preferably, the absorption resistance of the aerosol generating matrix is 0.5 Pa / mm. 3 ~1Pa / mm 3 ; Preferably, the loading rate of the flavoring material on the carrier material is 50% to 500%; Preferably, the volume of the carrier material is 0.2–1 cm³. 3 More preferably, it is 0.4–0.6 cm. 3 .
3. The aerosol generation matrix according to claim 1 or 2, characterized in that, The mass ratio of the carrier material to the flavoring material is 1:(0.1-5); Preferably, the mass ratio of the carrier material to the flavoring material is 1:(1-3).
4. The aerosol generation matrix according to claim 1, characterized in that, The density of the carrier material is 0.01 g / cm³. 3 ~5g / cm 3 ; Preferably, the carrier material comprises any one of porous plant tissue, porous compound, and biscuit; Preferably, the porous plant tissue includes any one of expanded tobacco stems, corn stalks, or sugarcane bagasse; Preferably, the porous compound is activated carbon.
5. The aerosol generation matrix according to claim 1, characterized in that, The shape of the aerosol generating matrix includes any one of a cylinder, a sphere, or a polygonal prism; Preferably, the polygonal prism is a cuboid or a cube; Preferably, when the aerosol generating matrix is cylindrical, the diameter of the cylinder is 3mm to 20mm and the height is 5mm to 30mm; Preferably, when the aerosol generating matrix is spherical, the diameter of the sphere is 5mm to 20mm; Preferably, when the aerosol generating matrix is in the shape of a cuboid, the length of the cuboid is 3mm to 10mm, the width is 3mm to 10mm, and the height is 5mm to 30mm. Preferably, when the aerosol generating matrix is a cube, the diameter of the cube is 5 mm to 20 mm.
6. The aerosol generation matrix according to claim 1, characterized in that, The flavoring material includes 5-90 parts by weight of fragrance and 5-35 parts by weight of smoke-generating agent; Preferably, the flavoring material comprises 80 parts by weight of fragrance and 20 parts by weight of smoke-generating agent; Preferably, the smoke-generating agent comprises at least one of propylene glycol, glycerol, 1,4-butanediol, and sorbitol; Preferably, the fragrance includes natural fragrances and / or synthetic fragrances.
7. A method for preparing an aerosol-generating matrix as described in any one of claims 1 to 6, characterized in that, This includes coating the flavoring material onto the outer and / or inner surface of the porous carrier material.
8. The preparation method according to claim 7, characterized in that, The coating method includes at least one of brushing, spraying or dipping; Preferably, the dip coating includes immersing the carrier material in the liquid flavoring material, wherein the temperature of the flavoring material is 18°C to 28°C and the immersion time is 0.1h to 2h. Preferably, the coating process further includes drying the coated carrier material at a temperature of 55°C to 105°C for a time of 5 min to 45 min.
9. The preparation method according to claim 7, characterized in that, The preparation of the porous carrier material includes microwave expansion or shaping of the raw material of the carrier material; Preferably, it also includes a suction resistance greater than 1 Pa / mm. 3 The aerosol-generating matrix is perforated. Preferably, the drilling process includes any one of laser drilling, electrostatic drilling, or plasma drilling.
10. The use of an aerosol generating matrix as described in any one of claims 1 to 6, or the aerosol generating matrix prepared by the preparation method as described in any one of claims 7 to 9, in heated non-combustible tobacco products.