A substrate segment and aerosol-generating article

Abstract

The application relates to the aerosol generating technical field and provides a substrate section and an aerosol generating article. The substrate section comprises a plurality of substrate strips, the substrate strips are used for generating aerosols, the substrate strips have a first cross section, the length of the substrate strips is greater than the hydraulic diameter of the first cross section, the hydraulic diameter of the first cross section is 0.1 mm to 0.5 mm, and the first cross section is perpendicular to the length direction of the substrate strips. The substrate section provided by the application can improve the consistency of the aerosol released by the substrate section.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, and more particularly to a matrix segment and an aerosol generation product. Background Technology

[0002] This section is intended to provide background or context for embodiments of this application. The description herein is not intended to imply that it is prior art simply because it is included in this section.

[0003] Aerosol-generating products include a matrix segment, which can generate aerosols through heating without combustion. In related technologies, uneven aerosol release occurs during the heating process of the matrix segment. Improving the consistency of aerosol release from the matrix segment is an important research direction in the aerosol-generating product industry. Utility Model Content

[0004] In view of this, the embodiments of this application aim to provide a matrix segment and an aerosol generation article that can improve the consistency of aerosol release from the matrix segment.

[0005] The first aspect of this application provides a matrix segment comprising a plurality of matrix strips for generating aerosols. The matrix strips have a first cross-section, the length of which is greater than the hydraulic diameter of the first cross-section, the hydraulic diameter of which is 0.1 mm to 0.5 mm, and the first cross-section is perpendicular to the length direction of the matrix strip.

[0006] In some embodiments, at least one portion of the substrate strip is bent.

[0007] In some embodiments, at least a portion of the matrix strips are connected.

[0008] In some embodiments, the porosity of the matrix strip is not less than 60%.

[0009] In some embodiments, the true density of the matrix strip is not less than 1.4 g / cm³. 3 .

[0010] In some embodiments, the length of the substrate strip is not less than 5 mm.

[0011] In some embodiments, the ratio of the length of the substrate strip to the hydraulic diameter of the first cross section is not less than 10.

[0012] In some embodiments, the first cross-section is square, the width of the first cross-section is 0.5 mm to 3 mm, and the thickness of the first cross-section is 0.1 mm to 0.25 mm.

[0013] In some embodiments, the thermal conductivity of the matrix strip is from 0.2 W / m·K to 2 W / m·K.

[0014] In some embodiments, the tensile strength of the matrix strip is from 1.5 MPa to 5 MPa.

[0015] In some embodiments, the matrix strip has micropores, and at least a portion of the micropores of the matrix strip are interconnected.

[0016] In some embodiments, at least one of the matrix strips has a different flavor from the rest of the matrix strips, or all of the matrix strips have the same flavor.

[0017] In some embodiments, the first cross-section is at least one of a triangle, a quadrilateral, a circle, and an irregular shape.

[0018] A second aspect of this application provides an aerosol generating article comprising a matrix segment as described in any one of the preceding claims and at least one functional segment, wherein the matrix segment and the functional segment are disposed along a first direction.

[0019] The matrix segment provided in this embodiment has a hydraulic diameter of 0.1 mm to 0.5 mm in the first cross-section, indicating a relatively small size. This allows for smooth heat transfer from the surface to the interior of the matrix segment during heating, as well as between multiple matrix segments. No significant temperature difference occurs between the outer surface and interior of the matrix segment, ensuring uniform and sufficient heating. This results in consistent aerosol release, ensuring that the amount of aerosol inhaled by the user is roughly the same per breath, eliminating variations in sensation and enhancing the user experience. Attached Figure Description

[0020] Figure 1 The diagram shows the structure of an aerosol-generated article provided in some embodiments of this application, wherein the matrix strip is non-linear; Figure 2 The following is a schematic diagram of the structure of a matrix strip provided in some embodiments of this application, wherein the matrix strip is a sinusoidal waveform curve; Figure 3 for Figure 2 Enlarged view of point A in the middle, where a represents the thickness of the first cross section and b represents the width of the first cross section; Figure 4 The following is a schematic diagram of the structure of a matrix strip provided in some other embodiments of this application, wherein the matrix strip is curved in a spatial spiral shape, and L represents the axis; Figure 5 The following is a schematic diagram of the structure of a matrix strip provided in some other embodiments of this application, wherein the matrix strip is serrated; Figure 6 The following is a schematic diagram of the structure of a matrix strip provided in some other embodiments of this application, wherein the matrix strip is straight, c represents the thickness of the first cross section, and d represents the width of the first cross section; Figure 7 The diagram below shows the structure of an aerosol-generating article provided in some other embodiments of this application, wherein the matrix strip is straight. Figure 8 This is a schematic diagram of the structure of aerosol-generated articles provided in some embodiments of this application; Figure 9 Schematic diagrams of the structure of aerosol-generated articles provided in other embodiments of this application; Figure 10 The following is a schematic diagram of the structure of an aerosol-generated article provided in some embodiments of this application, wherein the matrix strip is non-linear; Figure 11 This is a schematic diagram of the structure of an aerosol-generated article provided in some embodiments of this application, wherein the matrix strip is linear.

[0021] Explanation of reference numerals in the attached figures 10. Aerosol-generating products; 1. Matrix segment; 11. Matrix strip; 11a. First section; 111. Straight segment; 2. Functional section; 21. Support section; 22. Cooling section; 23. Filtering section; 24. Front plug section. Detailed Implementation

[0022] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0023] In the description of the embodiments of this application, the "first direction" orientation or positional relationship is based on Figure 1 , Figures 7 to 11 The orientation or positional relationship shown is for illustrative purposes only and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of this application.

[0024] The various specific technical features and embodiments described in the detailed embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features / embodiments can form different implementation methods. To avoid unnecessary repetition, the various possible combinations of various specific technical features / embodiments in this application will not be described separately. In addition, the term "first" is used for descriptive purposes only and should not be construed as indicating or implying relative importance. The application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] It should be noted that in this application, "multiple" refers to a quantity including two or more. "At least one" refers to a quantity including one or more.

[0026] In this application, the unit "mm" refers to millimeters. The unit "W / m·K" refers to watts per meter per degree. The unit "g / cm" refers to... 3 "Gram per cubic centimeter. MPa" is megapascal. "°C" is degree Celsius. "°" is degree. "nm" is nanometer. "mg / s" is milligram per second.

[0027] In related technologies, the matrix segment includes an aerosol generating matrix. The aerosol generating matrix is ​​usually large in size. During the heating process of the matrix segment, heat cannot be transferred to the interior of the aerosol generating matrix in a timely manner, resulting in a large temperature difference between the outer surface and the interior of the aerosol generating matrix. This leads to uneven heating and affects the consistency of aerosol release.

[0028] Please see Figures 1 to 7 and Figures 10 to 11 This application provides a matrix segment 1, which includes a plurality of matrix strips 11. The matrix strips 11 are used to generate aerosols. The matrix strips 11 have a first cross section 11a. The length of the matrix strips 11 is greater than the hydraulic diameter of the first cross section 11a. The hydraulic diameter of the first cross section 11a is 0.1 mm to 0.5 mm. The first cross section 11a is perpendicular to the length direction of the matrix strips 11.

[0029] The matrix strip 11 can be two, three, four, or more.

[0030] Two matrix strips 11 may or may not be connected. Multiple matrix strips 11 can be constrained using a wrapping layer or an outer layer to maintain the overall state of the matrix segment 1.

[0031] The hydraulic diameter is the ratio of 4 times the area of ​​the first section 11a to the perimeter of the first section 11a.

[0032] The matrix strip 11 is suitable for generating aerosols by heating without ignition. That is, the matrix strip 11 can be heated below the ignition point to generate aerosols without burning during the aerosol generation process.

[0033] In other scenarios, the matrix strip 11 can also be used to generate aerosols by heating and ignition, that is, the matrix strip 11 reaches the ignition point and generates aerosols by combustion.

[0034] Please see Figures 1 to 7 The matrix strip 11 is strip-shaped. Exemplarily, the length of the matrix strip 11 is not limited; it can be a long strip or a relatively short strip. This facilitates the filling of multiple matrix strips 11.

[0035] The specific size of the hydraulic diameter of the first section 11a is not limited. For example, the hydraulic diameter of the first section 11a can be any value or a range of any two values ​​among 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm or 0.5mm.

[0036] Compared to the large-sized aerosol generating matrix in related technologies, the hydraulic diameter of the first cross-section 11a in this application is between 0.1 mm and 0.5 mm, and the size of the matrix strip 11 is relatively small. Thus, during the heating process, heat can be smoothly transferred from the surface of the matrix strip 11 to its interior, and between multiple matrix strips 11. There is no significant temperature difference between the outer surface and the interior of the matrix strip 11, allowing it to be heated uniformly and fully. This results in uniform heating of the matrix segment 1, improving the consistency of aerosol release. Users inhale approximately the same amount of aerosol per breath, eliminating any difference in sensation and enhancing the user experience.

[0037] The matrix segment 1 provided in this embodiment has a hydraulic diameter of the first cross section 11a of the matrix strip 11 between 0.1 mm and 0.5 mm, and the size of the matrix strip 11 is relatively small. In this way, during the heating process, heat can be smoothly transferred from the surface of the matrix strip 11 to its interior, and between multiple matrix strips 11. There is no large temperature difference between the outer surface and the interior of the matrix strip 11, allowing it to be heated uniformly and fully. This achieves uniform heating of the matrix segment 1, improves the consistency of aerosol release, and ensures that the amount of aerosol inhaled by the user is approximately the same for each breath, eliminating any difference in sensation and enhancing the user experience.

[0038] In some embodiments, please refer to Figures 2 to 5 At least one portion of the matrix strip 11 is curved. In other words, the curvature of at least one portion of the matrix strip 11 is not zero; for example, it may be a single portion of the matrix strip 11 that is curved, or it may be multiple portions of the matrix strip 11 that are curved. The matrix strip 11 is generally a locally curved long or short strip.

[0039] For example, please refer to Figure 2 The matrix strip 11 has an overall shape that is roughly sinusoidal, and it can have a wavy structure. In this way, the various parts of the matrix strip 11 transition smoothly with virtually no sharp corners, which can reduce stress concentration, facilitate molding, and reduce the risk of breakage during extrusion.

[0040] For example, please refer to Figure 4The matrix strip 11 is curved in a spatial spiral shape, and the matrix strip 11 can be a spring-like structure. That is, the matrix strip 11 rotates circumferentially around the axis and extends in the direction of the axis.

[0041] In another embodiment, the matrix strip 11 may also be curved in a planar spiral shape, and the matrix strip 11 may be a mosquito coil-like structure. That is, the matrix strip 11 rotates circumferentially around the axis and does not extend in the direction of the axis, and all parts of the matrix strip 11 are approximately located in a plane.

[0042] In this embodiment, at least one part of the matrix strip 11 is bent. On the one hand, the contact area between the matrix strips 11 is small, making them less likely to stick together, which can improve the filling rate of the matrix segment 1. Since the matrix strips 11 are well dispersed, it is easy for the matrix strips 11 to be evenly mixed with the shredded tobacco leaves, which can improve the problem of uneven taste. It can also provide a good material basis for processes such as mixing and blending with other forms of matrix and rolling, which is very beneficial for efficient application in aerosol-generated products 10. On the other hand, the matrix strips 11 with bent parts are basically the same as the shape of natural tobacco leaves after shredding. In this way, it can ensure that the matrix segment 1 is heated evenly, and the aerosol release is consistent, preventing the generation of aerosols with a burnt taste.

[0043] The fill rate refers to the volume occupied by a unit mass of matrix segment 1.

[0044] In some embodiments, please refer to Figure 5 The matrix strip 11 includes multiple straight segments 111 connected sequentially along the length direction, and the included angle between two adjacent straight segments 111 is an acute angle.

[0045] In this embodiment, the matrix strip 11 is generally composed of periodically connected straight line segments 111 with opposite slopes, forming a continuous sawtooth-shaped broken line, roughly in the form of a triangular wave curve, which can also be referred to as a folded matrix strip 11. Multiple folded matrix strips 11 form a loose, mesh-like cross structure. When filling the same volume, less folded matrix strips 11 are used compared to straight matrix strips. The gaps between two folded matrix strips 11 are larger, and the aerosols generated during heating in the suction gap can be temporarily stored in the gaps, resulting in a larger aerosol volume during suction and a better user experience.

[0046] In other embodiments, please refer to Figure 6 , Figure 7 and Figure 11 The matrix strip 11 can also be straight. In other words, the curvature of the matrix strip 11 is zero at all points.

[0047] In some embodiments, the matrix strip 11 is an extruded structure. Specifically, the slurry is shaped into a curved strip structure with at least one curved portion through the outlet of a molding die at a set temperature and pressure. The shape of the first cross-section 11a of the extruded matrix strip 11 is substantially the same as or slightly different from the shape of the outlet.

[0048] Extrusion molding includes a barrel and a screw. A cavity for receiving slurry is formed within the barrel. A forming die is disposed at the port of the barrel, and the screw is disposed within the cavity. The screw extrudes and pushes the slurry within the cavity. The slurry continuously passes through the outlet of the forming die to form a matrix strip 11 that is at least partially curved. Compared to shredded tobacco leaves and reconstituted tobacco prepared by papermaking, slurry processing, and rolling processes, extruded slurry can include granular substrates formed from pulverized tobacco raw materials such as tobacco leaves, stems, and dust. This eliminates the need for sorting tobacco leaves and stems, resulting in relatively lower requirements for tobacco leaves. The slurry can also include other herbal raw materials besides tobacco, fully utilizing herbal raw materials such as tobacco and reducing waste. Furthermore, the extrusion molding process is simple and can reduce production costs.

[0049] The matrix strip 11 is an integral structure, meaning that the matrix strip 11 is a single, indivisible physical whole that can maintain its overall state without the need for external components.

[0050] In some embodiments, please refer to Figure 1 At least some of the matrix strips 11 are connected.

[0051] The connection of multiple matrix strips 11 means that multiple matrix strips 11 are adhered to or intertwined with each other. This is because, due to the different speeds at which the various matrix strips 11 pass through the die head, the multiple matrix strips 11 after extrusion adhere to or intertwine with each other. In this way, the multiple interconnected matrix strips 11 can improve the overall structural strength of the matrix segment 1, making the matrix segment 1 less prone to breakage.

[0052] As an example, some of the matrix strips 11 can be connected, or all of the matrix strips 11 can be connected sequentially.

[0053] In some embodiments, the porosity of the matrix strip 11 is not less than 60%.

[0054] Porosity refers to the percentage of pore volume in the matrix strip 11 to the total volume of the matrix strip 11 in its natural state. The matrix strip 11 in its natural state means that it has not undergone deformation such as stretching, compression, or curling. Thus, the matrix strip 11 has a high porosity, which can improve the aerosol release rate.

[0055] With a porosity greater than 60%, the matrix strip 11 has a large specific surface area while taking into account its heat transfer efficiency and mechanical strength. This promotes the release and transmission of the aroma components and smoke-generating components of the matrix strip 11, thereby enhancing the aroma intensity and consistency of the aerosol inhaled by the user.

[0056] For example, the porosity of the matrix strip 11 can be any value among 60%, 62%, 64%, 66%, 68%, 70%, 72%, and 75%, or a value between any two values.

[0057] In related technologies, the true density of the aerosol generation matrix is ​​typically 1.3 g / cm³. 3 .

[0058] In some embodiments, the true density of the matrix strip 11 is not less than 1.4 g / cm³. 3 .

[0059] True density refers to the actual mass per unit volume of matrix strip 11 under absolutely dense conditions, i.e., the density excluding all micropores. In other words, the volume here does not include the volume of the micropores in matrix strip 11. It can be understood that the lower the fill rate of matrix segment 1, the greater its true density and mass. Conversely, the higher the fill rate of matrix segment 1, the lower its true density and mass.

[0060] In this embodiment, compared with the aerosol generating matrix in the related art, the matrix strip 11 has a higher true density and better overall structural compactness. In particular, the high porosity matrix strip 11 provided in this application embodiment can also make the aerosol release amount and release rate relatively stable, which is conducive to improving the consistency of aerosol release.

[0061] For example, the true density of the matrix strip 11 may be 1.4 g / cm³. 3 1.45g / cm 3 1.5g / cm 3 1.55g / cm 3 1.6g / cm 3 1.65g / cm 3 1.7g / cm 3 1.75g / cm 3 and 1.8g / cm 3 The value between any one of the values ​​in etc., or between any two values ​​within a range.

[0062] In some embodiments, the length of the substrate strip 11 is not less than 5 mm. Preferably, the length of the substrate strip 11 can be from 5 mm to 15 mm.

[0063] For example, the length of the substrate strip 11 can be any value or a range of any two values, such as 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, or 15mm.

[0064] When the length of the matrix strip 11 is less than 5 mm, the matrix strip 11 is prone to breakage, which is not conducive to filling the matrix segment 1. When the length of the matrix strip 11 is greater than 15 mm, the matrix strip 11 is prone to folding, or the stacking ratio of the matrix strip 11 in some parts of the matrix segment 1 is high, which affects the permeability of aerosol and is not conducive to the heat transfer efficiency of the matrix strip 11.

[0065] The length of the matrix strip 11 is within the above range. The matrix strip 11 has good structural strength and is not easy to break. Furthermore, the matrix strips 11 are relatively evenly and regularly distributed, which is beneficial to the permeability of aerosols and the heat transfer efficiency of the matrix strips.

[0066] Aerosol permeability refers to the diffusion performance of aerosols through or through matrix strip 11.

[0067] In some embodiments, the ratio of the length of the substrate strip 11 to the hydraulic diameter of the first cross section 11a is not less than 10.

[0068] For example, the ratio of the length of the substrate strip 11 to the hydraulic diameter of the first section 11a can be any value or a range of any two values, such as 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20.

[0069] In some embodiments, please refer to Figure 2 and Figure 3 The first section 11a is square, the width of the first section 11a is 0.5mm to 3mm, and the thickness of the first section 11a is 0.1mm to 0.25mm.

[0070] When the size of the first cross-section 11a is smaller than the aforementioned range, overheating of the matrix strip 11 is likely to occur, leading to the generation of aerosols with a burnt smell. When the size of the first cross-section 11a is larger than the aforementioned range, aerosol release is not conducive.

[0071] The dimensions of the first section 11a are within the aforementioned range, and the shape of the matrix strip 11 is basically the same as that of the natural tobacco leaf after shredding. This ensures that the matrix section 1 is heated evenly, the aerosol release is consistent, and the generation of aerosols with a burnt smell is prevented.

[0072] For example, the width of the first section 11a can be any value among 0.5mm, 0.8mm, 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, 2.2mm, 2.4mm, 2.5mm and 3mm or a value between any two values.

[0073] For example, the thickness of the first section 11a can be any value among 0.1mm, 0.12mm, 0.15mm, 0.18mm, 0.2mm, 0.22mm and 0.25mm or a value between any two values.

[0074] In some embodiments, the thermal conductivity of the substrate strip 11 is from 0.2 W / m·K to 2 W / m·K.

[0075] The thermal conductivity of the matrix strip is within the above range. The matrix strip 11 has good thermal conductivity and can continuously and stably generate aerosols, increasing the amount of visual smoke and aerosol capture during the user's inhalation process. The user can inhale a sufficient amount of aerosol with each puff.

[0076] Visual smoke volume refers to the amount of aerosol that a user can directly observe during inhalation.

[0077] For example, the thermal conductivity of the substrate strip 11 can be any value or a range of any two values ​​among 0.2 W / m·K, 0.4 W / m·K, 0.6 W / m·K, 0.8 W / m·K, 1 W / m·K, 1.2 W / m·K, 1.4 W / m·K, 1.6 W / m·K, 1.8 W / m·K, and 2 W / m·K.

[0078] In some embodiments, the tensile strength of the matrix strip 11 is 1.5 MPa to 5 MPa.

[0079] Tensile strength refers to the maximum stress that a unit size matrix strip 11 can withstand before tensile fracture.

[0080] The tensile strength of the matrix strip 11 is within the above-mentioned range. The matrix strip 11 has high mechanical strength and is not easily broken. It is not easily damaged during manufacturing, blending and transportation.

[0081] For example, the tensile strength of the matrix strip 11 can be any value of 1.5MPa, 1.8MPa, 2.0MPa, 2.2MPa, 2.4MPa, 2.6MPa, 2.8MPa, 3MPa, 3.5MPa, 4MPa, 4.5MPa and 5MPa or a range of any two values.

[0082] In some embodiments, the matrix strip 11 has micropores, and at least a portion of the micropores of the matrix strip 11 are interconnected.

[0083] Multiple micropores are interconnected to form microchannels. This increases the porosity of the matrix strip 11, thereby improving the aerosol release rate. Furthermore, the microchannels can carry fragrance, further increasing the fragrance loading capacity of the matrix segment 1 and ensuring uniform fragrance distribution and good retention, thus enhancing the aroma intensity and consistency of the aerosol inhaled by the user. For example, in the particle-bound matrix strip 11, the gaps between the particles constitute micropores. Exemplarily, the mixture used to prepare the matrix strip 11 is a granular material. The matrix strip 11, extruded from the mixture, has micropores. The cross-sectional area and length of the micropores are naturally formed through the extrusion process and the raw material components. The mixture expands after flowing out of the die from the extrusion chamber, forming the micropores.

[0084] As an example, the micropores of some of the matrix strips 11 are interconnected, or the micropores of all the matrix strips 11 are interconnected.

[0085] It should be noted that the microchannels described in this application are disordered, meaning they are difficult to generate in an orderly manner according to a design; in other words, the microchannels are generated randomly. All microchannels are pores in a microscopic sense, and their size is determined by the gaps between particles.

[0086] In some embodiments, at least one matrix strip 11 has a different flavor than the other matrix strips 11. That is, at least one matrix strip 11 and the other matrix strips 11 are made of materials with different flavors, so that the matrix segment 1 can produce aerosols with different flavors, enriching the taste of the aerosol and improving the user experience.

[0087] For example, at least one matrix strip 11 and the other matrix strips 11 have at least one different component, or at least one matrix strip 11 and the other matrix strips 11 have at least one different component content, so that aerosols with different flavors can be produced.

[0088] In some embodiments, all matrix strips 11 have the same flavor. That is, all matrix strips 11 are made of materials with the same flavor, which can increase the flavor concentration of the aerosol, allowing users to inhale a more concentrated aerosol and improve the user experience.

[0089] For example, all matrix strips 11 have the same composition and content.

[0090] In some embodiments, the first cross-section 11a is at least one of a triangle, a quadrilateral, a circle, and an irregular shape. Exemplarily, the first cross-section 11a may be triangular; the first cross-section 11a may also be quadrilateral; the first cross-section 11a may also be circular. An irregular shape refers to a symmetrical or asymmetrical shape other than those listed above; for example, the first cross-section 11a may be snowflake-shaped. The first cross-section 11a may also be two, three, or four of the following: triangle, quadrilateral, circle, and irregular shape.

[0091] In some embodiments, please refer to Figure 1 , Figure 7 , Figure 10 and Figure 11 Multiple matrix strips 11 are arranged randomly. Random arrangement means that there are no set rules or order for the matrix strips 11, and their positions are random.

[0092] In some embodiments, the matrix segment 1 further includes at least one of a sheet matrix, a filamentary matrix, and a particulate matrix.

[0093] For example, the sheet matrix is ​​formed by processing natural plant materials such as leaves and tobacco stems into reconstituted sheets, and the processing methods include papermaking, slurry making, or roll forming.

[0094] Filamentous substrate is made by cutting raw leaves and / or the aforementioned sheet substrate into filaments. For example, filamentous substrate includes shredded tobacco leaves.

[0095] Granular matrix is ​​made by pulverizing the original leaf and / or the aforementioned sheet matrix into dispersed particles. For example, the particle size of the individual particles in the granular matrix is ​​on the millimeter level.

[0096] As an example, matrix segment 1 may include only sheet matrix; matrix segment 1 may include only filamentary matrix; matrix segment 1 may include granular matrix; or matrix segment 1 may include two or three of sheet matrix, filamentary matrix and granular matrix, and include matrix strip 11.

[0097] In this embodiment, at least one of the sheet matrix, filamentary matrix and granular matrix is ​​filled together with the matrix strip 11 to form the matrix segment 1.

[0098] In some embodiments, the proportion of matrix strip 11 is 1% to 99% based on the total mass of matrix segment 1. The total mass of matrix segment 1 includes the mass of both matrix strip 11 and the first matrix. Exemplarily, the proportion of matrix strip 11 can be 1% to 99%, that is, the ratio of the mass of matrix strip 11 to the total mass of matrix segment 1 is 1% to 99%.

[0099] With the mass ratio of the matrix strip 11 within the aforementioned range, on the one hand, the matrix segment 1 can achieve uniform heating, resulting in better consistency in aerosol release and improved user experience. On the other hand, it can also increase the thermal conductivity of the matrix segment 1, thereby increasing the amount of visual smoke and aerosol capture during the user's inhalation process.

[0100] For example, the proportion of matrix strip 11, based on the total mass of matrix segment 1, can be any value among 1%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, and 99%, or a value between any two values.

[0101] In other embodiments, the matrix strips 11 may constitute 100% of the total mass of the matrix segment 1. That is, the matrix segment 1 consists of matrix strips 11 and does not contain any other solid fillers. In this way, the true density of the matrix segment 1 is high, which can increase the amount of aerosol released by the matrix segment 1.

[0102] In one embodiment, the matrix strip 11 and the first matrix have different flavors, so that the matrix segment 1 can produce aerosols with different flavors, enriching the taste of the aerosols and improving the user experience.

[0103] In another embodiment, the matrix strip 11 has the same flavor as the first matrix, which can increase the flavor concentration of the aerosol, allowing users to inhale a more concentrated aerosol and improve the user experience.

[0104] In some embodiments, the matrix strip 11 includes a flavoring component, a skeleton component, a binder component, a functional component, and a smoke-generating agent component. The skeleton component provides a supporting framework for the prepared matrix strip 11, facilitating its shaping. It also provides support for other components, such as attachment points for the flavoring component, thereby enhancing the aroma quality of the matrix segment 1. The smoke-generating agent component readily atomizes to generate a large amount of aerosol, increasing the aerosol volume and providing the user with a satisfying vaping experience. The flavoring component provides the matrix segment 1 with a characteristic aroma, such as tobacco, thereby enhancing the user's vaping experience. The binder component wets and closely contacts the material interfaces of the various components in the matrix strip 11, generating intermolecular attraction, thus binding the powders, liquids, etc., of the component materials. The functional component provides various functions, such as improving the mechanical strength of the matrix strip 11 and increasing its flavor carrying capacity.

[0105] The matrix strip 11 provided in this application will be described in more detail below with reference to specific embodiments.

[0106] Example 1: The skeletal components include powdered tobacco leaves and phosphated tobacco stem fibers. The powdered tobacco leaves serve as a microporous matrix and provide natural tobacco aroma. The phosphated tobacco stem fibers are used to enhance the mechanical strength of the matrix strip 11 and improve thermal conductivity. The powdered tobacco leaves account for 60% of the mass, and the phosphated tobacco stem fibers account for 5% of the mass.

[0107] The binder components include modified starch and xanthan gum. The crosslinking degree of the modified starch reaches 40%, and the xanthan gum is used to improve the extrusion molding quality of the matrix strip 11. The mass percentage of modified starch is 5%, and the mass percentage of xanthan gum is 3%.

[0108] The functional components include reinforcing agents and functional additives. The reinforcing agents consist of 2% microcrystalline cellulose and 1.5% nano-calcium carbonate by mass, used to improve the toughness of matrix strip 11. The functional additives consist of 3.5% β-cyclodextrin and 1.5% porous silica by mass, used to encapsulate fragrances and increase fragrance carrying capacity.

[0109] The smoke-generating agent consists of 2% propylene glycol and 16.5% glycerol by mass, used to keep the matrix strip 11 moist and to promote aerosol release.

[0110] The preparation process includes step S1, soaking tobacco stem fibers in a 5% phosphoric acid solution for 2 hours, and then drying them at 80°C to obtain phosphoric acid esterified tobacco stem fibers; step S2, using a twin-screw extruder with a gradient temperature change at the die head, i.e., increasing from 85°C to 115°C and then decreasing to 95°C; step S3, setting the hot stretching ratio to 1:10, the constraint force applied by the extruder to 1.5MPa, and the fiber orientation angle to <5°; step S4, spraying the surface of matrix strip 11 with peppermint flavor microcapsules (particle size 160nm, loading rate 40%), and embedding a porous silica flavor carrier (loading rate 28%) in the core layer.

[0111] The matrix strip 11, prepared through the above process, had its parameters measured. The matrix strip 11 had a true density of 0.97 g / cm³, a porosity of 65%, a mechanical strength of 1.5 MPa to 5 MPa, an elongation at break of 8%, and a thermal conductivity of 0.4 W / m·K to 1.3 W / m·K. The first cross-section 11a was square, and its thickness was 0.15 mm. Furthermore, after heating the matrix strip 11 at 250°C for 5 minutes, the fragrance retention rate reached over 90%, indicating good fragrance retention.

[0112] Elongation at break refers to the ratio of the length of the matrix strip 11 that continues to extend until it breaks after being subjected to the maximum load during the tensile process to its original length. Elongation at break is used to characterize the plastic deformation capacity of the matrix strip 11 at tensile fracture.

[0113] Example 2: The skeletal components include tea powder fiber and recycled fiber from reconstituted tobacco flakes. The tea powder fiber accounts for 30% of the mass and is used to provide a tea aroma base. The porosity of the tea powder fiber is 70%. The recycled fiber from reconstituted tobacco flakes accounts for 35% of the mass and can enhance the tobacco flavor and reduce costs.

[0114] The types and mass proportions of the adhesive components, functional components, and smoke generator components are the same as in Example 1.

[0115] The preparation process includes step S1, mixing tea powder fiber and recycled tobacco leaf fiber together for 30 minutes; step S2, using a twin-screw extruder, the die temperature changes in a gradient, that is, from 90℃ to 125℃, and then from 95℃.

[0116] In this embodiment, a double-layer coating technology is used to improve the fragrance carrying capacity of the matrix strip 11. Specifically, the inner layer is coated first, using a sodium alginate-chitosan composite membrane (sodium alginate is dissolved in a 60°C water bath and stirred until completely transparent; chitosan is dissolved in a 1% acetic acid solution and then mixed with the sodium alginate solution, wherein the pH value is adjusted to 5.0 to 5.5, and the mass ratio of chitosan dissolved in the acetic acid solution to sodium alginate solution is 3:1) to encapsulate the fragrance emulsion particles, and then the mixture is coated using an iontophoresis method (Ca... 2+ Solution solidification forms microcapsules ranging from 50 nm to 100 nm.

[0117] Then, an outer coating is applied by spraying a second layer of ethyl cellulose (EC) ethanol solution (concentration 8wt%) to form a temperature-responsive hydrophobic protective layer.

[0118] After undergoing a double-layer coating process, the outer EC film of matrix strip 11 slowly dissolves and releases 30% of the fragrance when heated at a low temperature (120℃ to 180℃). Subsequently, under high temperature (200℃ to 300℃), the inner composite film ruptures and releases the remaining 70% of the fragrance. Throughout the entire heating process, the fragrance loss rate during high-temperature processing is reduced to below 15%, achieving a stepped fragrance release with better matching to the thermodynamic curve of the inhalation process, thereby enhancing the user experience.

[0119] The matrix strip 11, prepared through the above process, had its parameters measured. The matrix strip 11 had a true density of 0.92 g / cm³, a porosity of 65%, and a mechanical strength ranging from 1.5 MPa to 5 MPa. Its first cross-section 11a was square, and its thickness was 0.15 mm. Furthermore, the matrix strip 11 did not deform under heating conditions of 220°C, exhibiting good thermal stability.

[0120] During the initial heating stage, the aroma release rate was 0.8 mg / s, with the aroma primarily being a tea-smoky blend. Further, during the subsequent heating stage, the aroma release rate was 0.5 mg / s, with the aroma primarily being minty.

[0121] Please see Figure 1 , Figures 7 to 11 This application also provides an aerosol generating article 10, which includes a matrix segment 1 and at least one functional segment 2 as described in any embodiment of this application, wherein the matrix segment 1 and the functional segment 2 are disposed along a first direction.

[0122] As an example, functional segment 2 may provide at least one of the following: filtration function, adsorption function, aroma enhancement function, dilution function, cooling function, and resistance adjustment function.

[0123] Filtration function refers to the function of filtering out at least some of the particulate matter in aerosols.

[0124] Adsorption function refers to the ability to adsorb at least some impurities in aerosols. It can be understood that these impurities are substances that remove the active ingredients from the aerosol; the active ingredients are those that need to be provided to the user.

[0125] The aroma-enhancing function refers to the function of adding aroma-producing components to aerosols.

[0126] The dilution function refers to the function of reducing the concentration of active ingredients in aerosols.

[0127] Cooling function refers to the function of reducing the temperature of aerosols.

[0128] The suction resistance adjustment function refers to the function of reducing or increasing suction resistance. In this way, the flow rate and distribution of aerosols can be controlled, and the suction resistance and aerosol uniformity can be optimized.

[0129] In one embodiment, please refer to Figure 8 Functional segment 2 includes a support segment 21, which can withstand the temperature from the aerosol in matrix segment 1 and maintain its shape. The support segment 21 provides support.

[0130] In one embodiment, please refer to Figure 8 Functional section 2 includes a cooling section 22, which is used to reduce the temperature of the aerosol. This makes the aerosol suitable for users to inhale, avoiding the problem of "scalding the mouth".

[0131] In one embodiment, please refer to Figure 8 Functional section 2 includes a filter section 23, which is used to filter aerosols. For example, filter section 23 can block substances of a target particle size and can also adjust the suction resistance. For instance, filter section 23 can filter large-diameter particles, similar to powdery substances. Aerosols filtered through filter section 23 have a higher particle size uniformity and a smoother taste.

[0132] In one embodiment, please refer to Figure 8 and Figure 9 Functional segment 2 includes a front plug segment 24, which can directly contact the matrix segment 1. The main function of the front plug segment 24 is to clean and prevent the matrix segment 1 from falling off.

[0133] In one embodiment, please refer to Figure 8 The fore plug section 24, the matrix section 1, the support section 21, the cooling section 22, and the filter section 23 are connected sequentially along the first direction.

[0134] In another embodiment, please refer to Figure 9 The aerosol generating article 10 may also consist only of a matrix section 1 and a filter section 23, which are arranged along a first direction. In this embodiment, the matrix section 1 can be ignited to generate an aerosol.

[0135] In another embodiment, please refer to Figure 10 and Figure 11 The aerosol generating product 10 may also include a front plug section 24, a matrix section 1, a cooling section 22, and a filter section 23, with the front plug section 24, the matrix section 1, the cooling section 22, and the filter section 23 arranged along a first direction.

[0136] It should be noted that the direction in which the aerosol generating product 10 is inserted into the apparatus and the direction in which the aerosol generating product 10 is removed from the apparatus are both parallel to the first direction.

[0137] In one embodiment, the aerosol generating article 10 includes a coating layer that covers the outer periphery of the matrix section 1 and the outer periphery of the functional section 2. Exemplarily, the functional section 2 includes a front plug section 24, a support section 21, a cooling section 22, and a filter section 23, with the coating layer covering the outer peripheral surfaces of the matrix section 1 and the functional section 2. That is, the outer peripheries of the front plug section 24, the matrix section 1, the support section 21, the cooling section 22, and the filter section 23 are all covered by the coating layer. The coating layer can be a single layer, or two or more layers can be designed according to the design requirements and manufacturing process of the aerosol generating article 10. For example, during manufacturing, the support section 21, the cooling section 22, and the filter section 23 can be first wrapped with a single coating layer, and then another coating layer can be used to wrap the matrix section 1 and the front plug section 24. Of course, other combinations are also possible.

[0138] Regarding the heat-resistant, non-combustible matrix segment 1, this application also provides an aerosol generation system, including an aerosol generation device and an aerosol generation article 10 as described in any embodiment of this application. The aerosol generation device includes a heating element for heating the aerosol generation article 10 to generate aerosol.

[0139] Specifically, the heating element heats the substrate section 1 to generate an aerosol, and the specific method by which the heating element heats the substrate section 1 is not limited.

[0140] For example, the heating element is a resistance heating wire, which is attached to the aerosol generating product 10. After the heating element is turned on, it transfers heat to the matrix segment 1 to generate aerosol in the matrix segment 1. As another example, the heating element is a laser heating device, which irradiates the aerosol generating product 10 with a high-energy laser to raise the temperature of the matrix segment 1, thereby generating aerosol in the matrix segment 1.

[0141] In the description of this specification, the references to "an embodiment," "another embodiment," "some embodiments," "other embodiments," and "exemplary" 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 specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0142] The various embodiments / implementations provided in this application can be combined with each other without creating contradictions. The above descriptions are merely preferred embodiments of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A matrix segment, characterized in that, It includes multiple matrix strips for generating aerosols. Each matrix strip has a first cross-section, the length of which is greater than the hydraulic diameter of the first cross-section, which is 0.1 mm to 0.5 mm. The first cross-section is perpendicular to the length direction of the matrix strip.

2. The matrix segment according to claim 1, characterized in that, At least one portion of the substrate strip is bent.

3. The matrix segment according to claim 1, characterized in that, At least part of the matrix strips are connected.

4. The matrix segment according to claim 1, characterized in that, The porosity of the matrix strip is not less than 60%; and / or, The true density of the matrix strip is not less than 1.4 g / cm³. 3 .

5. The matrix segment according to claim 1, characterized in that, The length of the substrate strip is not less than 5 mm; and / or, The ratio of the length of the substrate strip to the hydraulic diameter of the first cross section is not less than 10.

6. The matrix segment according to claim 1, characterized in that, The first cross-section is square, with a width of 0.5 mm to 3 mm and a thickness of 0.1 mm to 0.25 mm.

7. The matrix segment according to claim 1, characterized in that, The thermal conductivity of the matrix strip is from 0.2 W / m·K to 2 W / m·K; and / or, The tensile strength of the matrix strip is 1.5 MPa to 5 MPa.

8. The matrix segment according to any one of claims 1 to 7, characterized in that, The matrix strip has micropores, and at least some of the micropores of the matrix strip are interconnected.

9. The matrix segment according to any one of claims 1 to 7, characterized in that, At least one of the matrix strips has a different flavor from the rest of the matrix strips, or all of the matrix strips have the same flavor.

10. The matrix segment according to any one of claims 1 to 7, characterized in that, The first cross section is at least one of a triangle, a quadrilateral, a circle, and an irregular shape.

11. An aerosol-generating product, characterized in that, It includes a matrix segment as described in any one of claims 1 to 10 and at least one functional segment, wherein the matrix segment and the functional segment are disposed along a first direction.

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