An extrusion die for an aerosol-generating article

Abstract

This application provides an extrusion die for generating aerosol articles. The extrusion die includes a die sleeve and a die core. The die sleeve has an installation space. The die core is at least partially disposed within the installation space and includes a feeding section and an extrusion section. The extrusion section is disposed at one end of the feeding section along a first direction of the die core. The interior of the extrusion section has a forming channel extending along the first direction. The forming channel includes a first extrusion channel and a plurality of second extrusion channels. The first extrusion channel surrounds the outer periphery of the plurality of second extrusion channels, and the second extrusion channels are interconnected. Each second extrusion channel is formed by at least a pair of opposing first sidewalls and second sidewalls, and the distance between the plurality of pairs of first sidewalls and second sidewalls is equal. The extrusion die provided in this application is beneficial for improving the problem of unstable aerosol generation.

Description

Technical Field

[0001] This application relates to the field of aerosol-generated article manufacturing technology, and in particular to an extrusion mold for aerosol-generated articles. Background Technology

[0002] Aerosol-generating products can form aerosols by ignition or by heating without combustion (HNB). In HNB aerosol-generating products, the product is heated by an external heat source to a level sufficient to release aerosols without combustion. Aerosols are formed by heating the product during use. However, this technology suffers from unstable aerosol generation. Furthermore, in related technologies using extrusion to manufacture aerosol-generating products, the aerosol generation process itself is unstable. Utility Model Content

[0003] In view of this, this application aims to provide an extrusion die for aerosol-generated articles to improve the problem of unstable aerosol generation.

[0004] To achieve the above objectives, embodiments of this application provide an extrusion mold for generating aerosol articles, comprising:

[0005] A mold sleeve, wherein the mold sleeve is provided with an installation space;

[0006] A mold core, at least partially disposed within the mounting space, the mold core including a feeding section and an extrusion section, the extrusion section being disposed at one end of the feeding section along a first direction of the mold core; the interior of the extrusion section having a forming channel extending along the first direction;

[0007] The forming channel includes a first extrusion channel and a plurality of second extrusion channels. The first extrusion channel surrounds the outer periphery of the plurality of second extrusion channels, and each of the second extrusion channels is connected. Each of the second extrusion channels is formed by at least a pair of opposing first sidewalls and second sidewalls, and the distance between the plurality of pairs of first sidewalls and second sidewalls is equal.

[0008] In one embodiment, the forming channel includes a third extrusion channel, and the plurality of second extrusion channels are arranged around the outer periphery of the third extrusion channel. The third extrusion channel includes a third sidewall and a fourth sidewall arranged opposite to each other, and the distance between the third sidewall and the fourth sidewall is equal.

[0009] In one embodiment, the distance between the first sidewall and the second sidewall is equal to the distance between the third sidewall and the fourth sidewall; and / or,

[0010] The distance between the third sidewall and the fourth sidewall is in the range of 0.1 mm to 0.5 mm.

[0011] In one embodiment, the first extrusion channel includes a fifth sidewall and a sixth sidewall disposed opposite to each other, and the distance between the fifth sidewall and the sixth sidewall is equal.

[0012] In one embodiment, the distance between the first sidewall and the second sidewall is equal to the distance between the fifth sidewall and the sixth sidewall; and / or,

[0013] The distance between the fifth sidewall and the sixth sidewall is in the range of 0.1 mm to 0.5 mm. In one embodiment, the extrusion section includes a housing and a plurality of first columns disposed within the housing. The first columns are spaced apart, and a second extrusion channel is defined between the first columns. The outermost first column and the inner wall of the housing define the first extrusion channel.

[0014] In one embodiment, the extrusion section includes a second column disposed within the housing, a plurality of first columns being disposed around the outer periphery of the second column, and the innermost first column defining a third extrusion channel between the second column and the innermost first column.

[0015] In one embodiment, the axis of the second column coincides with the axis of the housing; and / or,

[0016] The shape of the cross-section of the first column perpendicular to the first direction is one of the following: circular, polygonal, elliptical, racetrack-shaped, or irregular; and / or,

[0017] The cross-sectional shape of the second column perpendicular to the first direction is one of the following: circular, polygonal, elliptical, racetrack-shaped, or irregular; and / or,

[0018] The shape of the cross-section of the shell perpendicular to the first direction is one of a circle, a polygon, an ellipse, a racetrack shape, or an irregular shape.

[0019] In one embodiment, the feeding part has multiple feeding channels that extend along the first direction, the forming channel is connected to the feeding channels, and the shape of the cross-section of the feeding channel perpendicular to the first direction is one of a circle, a polygon, an ellipse, a racetrack shape, or an irregular shape.

[0020] In one embodiment, the distance between the first sidewall and the second sidewall is in the range of 0.1 mm to 0.5 mm.

[0021] The extrusion die provided in this application includes a die sleeve and a die core. The forming channel of the die core includes a first extrusion channel and a second extrusion channel. Each second extrusion channel is formed by at least a pair of opposing first sidewalls and second sidewalls. By setting the spacing between multiple pairs of first sidewalls and second sidewalls to be equal, the internal structure thickness of the aerosol generated product extruded from the second extrusion channel is uniform, which is beneficial for the uniform transfer of heat within the aerosol generated product. Thus, during the heating and suction process, the uniformity of aerosol release from the aerosol generated product can be improved, and the heat transfer instability caused by uneven internal structure thickness can be improved, thereby helping to improve the problem of unstable aerosol generation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the extrusion die and the aerosol-produced article in one embodiment of this application;

[0023] Figure 2 This is a cross-sectional view of an extrusion die in one embodiment of this application;

[0024] Figure 3 This is a schematic diagram of the structure of an extrusion die in one embodiment of this application;

[0025] Figure 4 for Figure 3 A cross-sectional view of the extrusion die;

[0026] Figure 5 This is a schematic diagram of the structure of the extrusion die and the aerosol-produced article in one embodiment of this application;

[0027] Figure 6 This is a schematic diagram of the structure of an extrusion die in one embodiment of this application;

[0028] Figure 7 This is a schematic diagram of the structure of an extrusion die in one embodiment of this application.

[0029] Explanation of reference numerals in the attached figures

[0030] 100. Extrusion die; 1. Die sleeve; 11. Installation space; 12. Main body; 121. Limiting groove; 13. Die mounting part; 131. Threaded hole; 2. Die core; 21. Feeding part; 211. Feeding channel; 22. Extrusion part; 221. Forming channel; 2211. First extrusion channel; 22111. Fifth side wall; 22112. Sixth side wall; 2212. Second extrusion channel; 22121. First side wall; 22122. 2213, Third extrusion channel; 22131, Third side wall; 22132, Fourth side wall; 222, Shell; 223, First column; 224, Second column; 23, Stepped structure; 200, Aerosol-generated product; 210, Aerosol-generating matrix; 220, First air passage hole; 230, Second air passage hole; 240, Outer ring support wall; 250, Internal support wall; 251, Connecting support wall; 252, Central air passage wall. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific implementation should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0032] In the description of this application, the orientation or positional relationship of "first direction" is based on the orientation or positional relationship shown in the accompanying drawings. It should be understood that these orientation terms are only for the convenience of describing this application and simplifying the description, and are 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, and therefore should not be construed as a limitation of this application.

[0033] This application provides an extrusion die 100 for an aerosol-generating article 200. Please refer to [link to relevant documentation]. Figures 1 to 4 The extrusion die 100 includes a die sleeve 1 and a die core 2. The die sleeve 1 is provided with an installation space 11. The die core 2 is at least partially disposed within the installation space 11. The die core 2 includes a feeding section 21 and an extrusion section 22, with the extrusion section 22 disposed at one end of the feeding section 21 along a first direction of the die core 2. The interior of the extrusion section 22 has a forming channel 221 extending along the first direction. The forming channel 221 includes a first extrusion channel 2211 and a plurality of second extrusion channels 2212. The first extrusion channel 2211 surrounds the outer periphery of the plurality of second extrusion channels 2212, and the second extrusion channels 2212 are connected. Each second extrusion channel 2212 is formed by at least a pair of opposing first sidewalls 22121 and second sidewalls 22122, and the spacing between the plurality of pairs of first sidewalls 22121 and second sidewalls 22122 is equal.

[0034] The aerosol generating article 200 is used in conjunction with an electronic atomizing device having a heating element. The aerosol generating article 200 includes an aerosol generating matrix 210, which is heated and atomized by the heating element to generate an aerosol.

[0035] There are various heating methods for heating elements. For example, heating methods include center heating and peripheral heating. Center heating refers to the heating element being inserted into the aerosol generating matrix 210 to bake and heat the aerosol generating matrix 210 from the inside out. Peripheral heating refers to the heating element being positioned around the aerosol generating matrix 210 to bake and heat the aerosol generating matrix 210 from the outside in. These heating methods can specifically include resistance heating, electromagnetic heating, infrared heating, microwave heating, laser heating, etc., and are not specifically limited here.

[0036] The extrusion die 100 provided in this application embodiment is used in conjunction with an extruder, such as a hydraulic plunger extruder, a twin-screw extruder, a single-screw extruder, etc., to manufacture all or part of the aerosol generating article 200 by extruding and molding the material.

[0037] Extrusion molding is a processing method in which material is fed into an extruder, and through the action between the extruder barrel and the screw, the material is pushed forward by the screw and continuously passed through the extrusion die 100 at the extruder outlet to form products or semi-finished products of various cross-sections. The material formed by extrusion molding is in the form of strips.

[0038] This application describes an embodiment using an extrusion die 100 to manufacture the aerosol generating matrix 210 in the aerosol generating article 200 as an example. It should be noted that the aerosol generating article 200 may only have the aerosol generating matrix 210, or it may be a combination of the aerosol generating matrix 210 and other structures. For example, as needed, the aerosol generating article 200 may also have functional sections at one or both ends of the aerosol generating matrix 210. The functional sections may only have a filtration function, or they may have both filtration and cooling functions. In some embodiments, all or part of the functional sections may also be manufactured using the extrusion die 100 in this application embodiment.

[0039] The specific structure of the aerosol generating matrix 210 is not limited here. Exemplarily, in one embodiment, the aerosol generating matrix 210 may be made of the atomizing medium itself, such as a smoky flavoring medium. In other embodiments, the aerosol generating matrix 210 may also include a matrix and an atomizing medium disposed on the matrix. The matrix may be, for example, high-temperature resistant carbon fiber. In this way, by providing a matrix, the strength of the aerosol generating matrix 210 can be improved, and it can withstand a certain degree of high temperature without producing odor.

[0040] The specific composition of the aerosol generating matrix 210 is not limited here. For example, in one embodiment, the aerosol generating matrix 210 may include plant components, auxiliary components, smoke-generating agent components, adhesive components, etc.

[0041] In some embodiments, the plant-based ingredients are one or more combinations of powders formed from raw tobacco leaves, tobacco fragments, tobacco stems, tobacco dust, and aromatic plants after being crushed. The plant-based ingredients are the core source of the product's aroma. Endogenous substances in the plant-based ingredients, such as nicotine, enter the bloodstream through atomization, promoting the pituitary gland to produce dopamine, thereby generating a sense of physiological satisfaction.

[0042] In some embodiments, the auxiliary components may be one or more combinations of inorganic fillers, lubricants, and emulsifiers. The inorganic fillers include one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. The inorganic fillers provide skeletal support for the plant components, and their micropores increase the porosity of the wall material after molding, thereby improving the aerosol release rate.

[0043] Lubricants include one or more of the following: candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. Lubricants can increase the flowability of particles, reduce friction between particles, result in a more uniform overall particle density, and also reduce the pressure required for mold forming, thus reducing mold wear.

[0044] Emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers can, to some extent, slow down the loss of flavor substances during storage, increase the stability of flavor substances, and improve the sensory quality of the product. Emulsifiers (also known as surfactants) can reduce the interfacial tension between water-soluble and water-insoluble components in a mixture, and form a more robust film on the surface of microdroplets or an electric double layer on the surface of microdroplets due to the charge given by the emulsifier, preventing microdroplets from agglomerating and maintaining a homogeneous emulsion. Homogenizing two immiscible components through emulsification can improve the consistency of product quality.

[0045] The function of the smoke-generating agent is to produce a large amount of vapor upon heating, thereby increasing the amount of smoke in the smoke-generating product. In some embodiments, the smoke-generating agent may include, for example, one or more combinations of: monohydric alcohols (such as menthol); polyhydric alcohols (such as propylene glycol, triethylene glycol, 1,3-butanediol, and glycerol); esters of polyhydric alcohols (such as glyceryl monoacetate, glyceryl diacetate, or glyceryl triacetate); monocarboxylic acids; polycarboxylic acids (such as lauric acid, myristic acid) or aliphatic esters of polycarboxylic acids (such as dimethyl dodecanoate, dimethyl tetradecanoate, erythritol, 1,3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl lauryl acetate, triacetin, mesoerythritol, a mixture of diacetic acid esters, diethyl caprylate, triethyl citrate, methyl benzoate, phenylacetic acid methyl ester, ethyl vanillate, glyceryl tributate, and lauryl acetate).

[0046] In some embodiments, the adhesive component is a natural plant extract, a non-ionic modified viscous polysaccharide, including one or more combinations of tamarind polysaccharide, pullulan polysaccharide, seaweed polysaccharide, locust bean gum, guar gum, and xyloglucan. The adhesive achieves close contact with the component materials of the product through wetting at the interface, generating intermolecular attraction, thereby binding the powder, liquid, etc., components together. Furthermore, the use of a natural plant extract and a non-ionic adhesive avoids the release of harmful substances such as methanol, formaldehyde, and acrolein that can occur with colloidal modification, thus improving the safety of the product.

[0047] For example, the aerosol generating matrix 210 can be a particulate aggregate, which is a reconstituted tobacco medium, such as a reconstituted tobacco medium containing smoke-generating agents, tobacco, and other components. The particulate aggregate aerosol generating matrix 210 remains an integral medium after being heated and inhaled or after heating is stopped, and is not prone to disintegration and falling off. This solves the problems of sheet-like, filamentous, or loose particulate aerosol generating matrices 210 in the prior art, such as sheet detachment, filamentous components falling off, and difficulty in cleaning.

[0048] The die sleeve 1 is the outer shell of the extrusion die 100. The die sleeve 1 provides installation space 11 for its die core 2 and plays a supporting and protective role for the internal structure, so as to improve the stability of the die during operation.

[0049] The mold core 2 is located inside the mold sleeve 1 and is used to form the aerosol generation matrix 210.

[0050] The feeding section 21 is part of the mold core 2. The feeding section 21 is provided with multiple feeding channels 211. The feeding channels 211 are responsible for introducing materials into the mold core 2 to provide a material source for subsequent extrusion molding.

[0051] The extrusion section 22 is another part of the mold core 2. The extrusion section 22 is connected to the feeding section 21 and has a forming channel 221 inside. The material entering the extrusion section 22 from the feeding section 21 is extruded according to the shape of the forming channel 221 to form an aerosol generating matrix 210 of a specific shape.

[0052] The specific direction of the first direction is not limited here; it can be any direction. For ease of explanation, please refer to [link to relevant documentation]. Figure 2 The first direction Z1 is parallel to the extrusion direction of the aerosol generating matrix 210.

[0053] The feeding channel 211 is located inside the feeding part 21. Multiple feeding channels 211 extend along the first direction Z1. Their function is to guide the material from the outside into the mold core 2 so that the material is supplied evenly and stably.

[0054] The forming channel 221 is located inside the extrusion section 22, extends along the first direction Z1, and communicates with the feed channel 211. The forming channel 221 can be used to form the desired shape of the aerosol generating matrix 210 and the shape of the air passages. Under the pressure of the extruder, the material fills the space inside the forming channel 221 and is extruded from the outlet of the forming channel 221 along its extending direction. Finally, an aerosol generating matrix 210 matching the cavity shape of the forming channel 221 is extruded.

[0055] It should be noted that the forming channel 221 here refers to the channel constructed within the solid structure of the extrusion section 22, extending along the first direction Z1 of the mold core 2. In other words, the forming channel 221 is enclosed by the solid structure of the extrusion section 22, rather than being a channel formed based on the spatial relationship between the outer surface of the extrusion section 22 and other components.

[0056] "The spacing between multiple pairs of first sidewalls 22121 and second sidewalls 22122 is equal" means that the vertical distance from any point on the first sidewall 22121 to its corresponding second sidewall 22122 is the same or approximately the same (manufacturing tolerances are allowed). Thus, the internal structure of the aerosol generation matrix 210 formed in the second extrusion channel 2212 has a uniform thickness, which is equal to the spacing between the first sidewalls 22121 and the second sidewalls 22122.

[0057] In some embodiments, the two ends of each second extrusion channel 2212 are connected into a whole by a connecting segment. It should be noted that the connecting segment should be uniformly connected to the second contact channel so that the aerosol generating matrix 210 structure extruded from the second extrusion channel 2212 has a uniform thickness.

[0058] For example, please refer to Figure 5The aerosol generating matrix 210 includes an outer ring support wall 240 and an inner support wall 250. The outer ring support wall 240 is arranged in a closed loop to form the outer contour of the aerosol generating matrix 210, and the inner support wall 250 is inside the outer ring support wall 240 and connected to the outer ring support wall 240.

[0059] The forming channel 221 is composed of a first extrusion channel 2211 and a second extrusion channel 2212. That is, when the material is extruded, it can diffuse from the first extrusion channel 2211 to the second extrusion channel 2212, or from the second extrusion channel 2212 to the first extrusion channel 2211. There is no obstruction between the two channels. Sufficient material can continuously fill the gap between the first extrusion channel 2211 and the second extrusion channel 2212 under pressure. In this way, the structure of the extruded aerosol generating matrix 210 is a continuous whole.

[0060] In related technologies, the distances between the relative walls of the extrusion channels of the molding core are not equal, resulting in uneven wall thickness of the internal structure of the aerosol generated product formed by the extrusion of the molding channel. During the heating process, heat cannot be evenly transferred inside the aerosol generated product, which leads to unstable aerosol generation.

[0061] The extrusion die 100 provided in this application includes a die sleeve 1 and a die core 2. The forming channel 221 of the die core 2 includes a first extrusion channel 2211 and a second extrusion channel 2212. Each second extrusion channel 2212 is formed by at least a pair of opposing first sidewalls 22121 and second sidewalls 22122. By setting the spacing between multiple pairs of first sidewalls 22121 and second sidewalls 22122 to be equal, the internal structure thickness of the aerosol generating article 200 extruded from the second extrusion channel 2212 is uniform, which is beneficial to the uniform transfer of heat within the aerosol generating article 200. Thus, during the heating and suction process, the uniformity of aerosol release from the aerosol generating article 200 can be improved, and the heat transfer instability caused by uneven internal structure thickness can be improved, thereby helping to improve the problem of unstable aerosol generation.

[0062] In some embodiments, please refer to Figures 1 to 5 The forming channel 221 includes a third extrusion channel 2213, and a plurality of second extrusion channels 2212 are arranged around the outer periphery of the third extrusion channel 2213. The third extrusion channel 2213 includes a third sidewall 22131 and a fourth sidewall 22132 arranged opposite to each other, and the distance between the third sidewall 22131 and the fourth sidewall 22132 is equal.

[0063] The third extrusion channel 2213 is used to form the central air passage wall 252 of the aerosol generation matrix 210. The third extrusion channel 2213 is provided with a third side wall 22131 and a fourth side wall 22132 opposite to each other, and the distance between the third side wall 22131 and the fourth side wall 22132 is equal, so that the central air passage wall 252 formed in the third extrusion channel 2213 has a uniform thickness.

[0064] For example, the aerosol generating matrix 210 includes air passages, including a first air passage 220 and a second air passage 230, with the first air passage 220 disposed around the outer periphery of the second air passage 230.

[0065] The second extrusion channel 2212 is arranged around the outer periphery of the third extrusion channel 2213. The second extrusion channel 2212 forms a connecting support wall 251 for the aerosol generation matrix 210. The connecting support wall 251 is the hole wall of the first air passage 220.

[0066] The second extrusion channel 2212 is disposed between the third extrusion channel 2213 and the first extrusion channel 2211, connecting the third extrusion channel 2213 and the first extrusion channel 2211. Correspondingly, the connecting support wall 251 can connect the central air passage wall 252 and the outer ring support wall 240.

[0067] For example, the second airway pore 230 can be a central airway, that is, the axis of the second airway pore 230 coincides with the axis of the aerosol generating matrix 210.

[0068] For example, the aerosol generating matrix 210 is heated by a central heating method, and the second air passage 230 can be used to cooperate with a heating element. In other words, the heating element can be inserted into the second air passage 230 to heat and atomize the aerosol generating matrix 210.

[0069] For example, the second air passage 230 can also be used to allow airflow, thereby improving atomization efficiency.

[0070] In some embodiments, please refer to Figures 1 to 7 The distance between the first sidewall 22121 and the second sidewall 22122 is equal to the distance between the third sidewall 22131 and the fourth sidewall 22132.

[0071] In other words, the thickness of the connecting support wall 251 of the aerosol generating matrix 210 formed in the second extrusion channel 2212 is equal to the thickness of the central air passage wall 252 of the aerosol generating matrix 210 formed in the third extrusion channel 2213.

[0072] In some embodiments, the distance between the third sidewall 22131 and the fourth sidewall 22132 is in the range of 0.1 mm to 0.5 mm, that is, the thickness of the central airway wall 252 is in the range of 0.1 mm to 0.5 mm.

[0073] The specific dimensions of the distance between the third sidewall 22131 and the fourth sidewall 22132 (i.e. the thickness of the central airway wall 252) are not limited here, but can be, for example, 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, or 0.5mm.

[0074] The spacing between the third sidewall 22131 and the fourth sidewall 22132 is controlled within this range, enabling the material to withstand stable and appropriate pressure and constraint during extrusion. A stable channel width ensures consistency in material flow velocity and deformation, improving problems such as loose material flow and porous product structure caused by excessively wide channels, or material blockage and product cracking caused by excessively narrow channels, thereby improving the stability and consistency of the aerosol generation matrix 210 quality.

[0075] In some embodiments, please refer to Figures 1 to 7 The feeding section 21 has multiple feeding channels 211, which extend along a first direction, and the forming channel 221 is connected to the feeding channel 211.

[0076] When the aerosol generation matrix 210 is prepared through the extrusion die 100, the material entering the feed section 21 is transported through the feed channel 211 and then flows into the forming channel 221. The forming channel 221 constrains and guides the flow of the material, shaping it according to the shape of the channel. This process occurs inside the extrusion section 22, and the structure of the channel shapes the structure of the aerosol generation matrix 210.

[0077] In some embodiments, please refer to Figures 1 to 7 The first extrusion channel 2211 includes a fifth sidewall 22111 and a sixth sidewall 22112 disposed opposite to each other, and the distance between the fifth sidewall 22111 and the sixth sidewall 22112 is equal.

[0078] The second extrusion channel 2212 is provided with a fifth sidewall 22111 and a sixth sidewall 22112, with equal spacing between them. This ensures that the outer ring support wall 240 of the aerosol generating matrix 210 formed in the first extrusion channel 2211 has a uniform thickness. This facilitates uniform heat transfer within the aerosol generating matrix 210, improving the uniformity of aerosol generation during the heating and suction process. It also mitigates the heat transfer instability caused by uneven internal structure thickness, thus helping to address the problem of unstable aerosol generation.

[0079] In some embodiments, please refer to Figures 1 to 7 The distance between the first sidewall 22121 and the second sidewall 22122 is equal to the distance between the fifth sidewall 22111 and the sixth sidewall 22112.

[0080] In other words, the thickness of the connecting support wall 251 of the aerosol generating matrix 210 formed in the second extrusion channel 2212 is equal to the thickness of the outer ring support wall 240 of the aerosol generating matrix 210 formed in the first extrusion channel 2211.

[0081] In some embodiments, the spacing between the first sidewall 22121 and the second sidewall 22122, the spacing between the third sidewall 22131 and the fourth sidewall 22132, and the spacing between the fifth sidewall 22111 and the sixth sidewall 22112 are all the same. Thus, the thickness of the internal support wall 250 and the outer ring support wall 240 of the produced aerosol generating matrix 210 is equal, which facilitates uniform heat transfer within the aerosol generating matrix 210. This improves the uniformity of aerosol generation during the heating and suction process, mitigating the heat transfer instability caused by uneven internal structure thickness, thereby helping to address the problem of unstable aerosol generation.

[0082] In some embodiments, please refer to Figures 1 to 7 The extrusion section 22 includes a housing 222 and a plurality of first columns 223 disposed within the housing 222. The first columns 223 are spaced apart, and a second extrusion channel 2212 is defined between the first columns 223. The outermost first column 223 and the inner wall of the housing 222 define a first extrusion channel 2211.

[0083] The housing 222 provides physical support for the internal columns and molding channel 221, protects the internal structure, reduces interference from external factors, and maintains the stability of the molding channel 221.

[0084] The first column 223 is a columnar structure set inside the shell 222. Multiple columns are distributed at intervals and together with the inner wall of the shell 222, they define the shape of the forming channel 221 and affect the flow path of the material.

[0085] Here, the second extrusion channel 2212 is defined between the first columns 223. That is to say, one of the first sidewall 22121 and the second sidewall 22122 is provided between the two first columns 223 that are spaced apart.

[0086] The outermost first column 223 and the inner wall of the housing 222 define a first extrusion channel 2211. That is, both the first column 223 and the housing 222 are provided with one of a fifth side wall 22111 or a sixth side wall 22112. For example, if the inner wall of the housing 222 is the fifth side wall 22111, then each outermost first column 223 is provided with a sixth side wall 22112. Alternatively, the inner wall of the housing 222 can be the sixth side wall 22112, in which case each outermost first column 223 is provided with a fifth side wall 22111.

[0087] Here, the shape of the airway opening depends on the shape of the outer contour of each column.

[0088] The arrangement of the columns is not limited here.

[0089] In some embodiments, the columns are evenly distributed within the housing 222, and the even distribution may include the columns being distributed in a matrix or concentric circles.

[0090] There are multiple first columns 223. The gap between the first columns 223 defines a second extrusion channel 2212. The second extrusion channel 2212 is formed into a connecting support wall 251, which is the wall of the first air passage 220.

[0091] The first column 223 is arranged around the outer periphery of the second column 224. The gap between the second column 224 and the first column 223 defines a third extrusion channel 2213. The third extrusion channel 2213 forms a central air passage wall 252, which is the hole wall of the second air passage hole 230.

[0092] The gap between the first column 223 and the inner wall of the shell 222 defines the first extrusion channel 2211, which is formed into an outer ring support wall 240.

[0093] For example, the cross-section of the second airway hole 230 is larger than the cross-section of the first airway hole 220. Correspondingly, the cross-section of the second column 224 perpendicular to the first direction Z1 is larger than the cross-section of the first column 223 perpendicular to the first direction Z1.

[0094] It should be noted that in some embodiments, the first pillars 223 may be arranged in multiple rings, with each ring including multiple first pillars 223 arranged circumferentially along the second pillars 224, and the multiple rings of first pillars 223 being arranged radially spaced along the housing 222. The innermost ring of first pillars 223 is the ring of first pillars 223 closest to the center of the housing 222 along the radial direction of the housing 222, while the outermost ring of first pillars 223 is the ring of first pillars 223 closest to the inner wall of the housing 222 along the radial direction of the housing 222. In other embodiments, the first pillars 223 may be arranged in a single ring, that is, all the first pillars 223 are arranged circumferentially along the second pillars 224, and this ring of first pillars 223 is both the outermost and the innermost first pillars 223.

[0095] In some embodiments, the axis of the second column 224 coincides with the axis of the housing 222.

[0096] The axis of the second column 224 coincides with the axis of the shell 222. The second column 224 is located at the center of the shell 222. The second air passage 230 is located at the center of the aerosol generating matrix 210. The first air passages 220 of each auxiliary air intake can be evenly distributed around the second air passage 230, which is conducive to the uniformity of the internal structure of the aerosol generating matrix 210. In this way, heat is evenly transferred inside the aerosol generating matrix 210 during heating, which is conducive to the stable generation of aerosols.

[0097] In some embodiments, the shape of the cross section of the first column 223 perpendicular to the first direction Z1 is one of a circle, a polygon, an ellipse, a racetrack shape, or an irregular shape.

[0098] The shape of the cross-section of the first column 223 perpendicular to the first direction Z1 is not limited. For example, the shape of the cross-section of the first column 223 can be circular, polygonal (including but not limited to triangle, square, rhombus, etc.), elliptical, racetrack-shaped, irregular, etc., where irregular refers to other symmetrical or asymmetrical shapes besides those listed above. The shape of the cross-section of the first air channel 220, which corresponds to the aerosol generating matrix 210, can be circular, polygonal (including but not limited to triangle, square, rhombus, etc.), elliptical, racetrack-shaped, irregular, etc.

[0099] In some embodiments, the shape of the cross section of the second column 224 perpendicular to the first direction Z1 is one of a circle, a polygon, an ellipse, a racetrack shape, or an irregular shape.

[0100] The shape of the cross-section of the second column 224 perpendicular to the first direction Z1 is not limited. For example, the cross-section of the second column 224 can be circular, polygonal (including but not limited to triangles, squares, rhombuses, etc.), elliptical, racetrack-shaped, irregular, etc., where irregular refers to other symmetrical or asymmetrical shapes besides those listed above. The cross-section of the second air passage 230, which corresponds to the aerosol generating matrix 210, can be circular, polygonal (including but not limited to triangles, squares, rhombuses, etc.), elliptical, racetrack-shaped, irregular, etc.

[0101] In some embodiments, the shape of the cross section of the housing 222 perpendicular to the first direction Z1 is one of a circle, a polygon, an ellipse, a racetrack shape, or an irregular shape.

[0102] The shape of the cross-section of the shell 222 perpendicular to the first direction Z1 is not limited. For example, the cross-section of the shell 222 can be circular, polygonal (including but not limited to triangles, squares, rhombuses, etc.), elliptical, racetrack-shaped, irregular, etc., where irregular refers to other symmetrical or asymmetrical shapes besides those listed above. The shape of the cross-section corresponding to the outer contour of the aerosol generating matrix 210 can be circular, polygonal (including but not limited to triangles, squares, rhombuses, etc.), elliptical, racetrack-shaped, irregular, etc.

[0103] It should be noted that the "track shape" in this application refers to a shape similar to an athletic track, consisting of two semicircles and two parallel straight edges connected alternately.

[0104] In some embodiments, the feeding section 21 has a plurality of feeding channels 211, and the shape of the cross section of the feeding channel 211 perpendicular to the first direction Z1 is one of a circle, a polygon, an ellipse, a racetrack shape or an irregular shape.

[0105] The shape of the cross section of the feed channel 211 perpendicular to the first direction Z1 is not limited. For example, the shape of the cross section of the column can be circular, polygonal (including but not limited to triangle, square, rhombus, etc.), elliptical, racetrack-shaped, irregular, etc., where irregular refers to other symmetrical or asymmetrical shapes other than those listed above.

[0106] In some embodiments, please refer to Figures 1 to 7 The distance between the first sidewall 22121 and the second sidewall 22122 is in the range of 0.1mm to 0.5mm.

[0107] The specific dimensions of the distance between the first sidewall 22121 and the second sidewall 22122 are not limited here, but can be, for example, 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, or 0.5mm.

[0108] The spacing between the first sidewall 22121 and the second sidewall 22122 is controlled within this range, enabling the material to withstand stable and appropriate pressure and constraint during extrusion. A stable channel width ensures consistency in material flow velocity and deformation, improving problems such as loose material flow and porous product structure caused by excessively wide channels, or material blockage and product cracking caused by excessively narrow channels, thereby improving the stability and consistency of the aerosol generation matrix 210 quality.

[0109] In some embodiments, please refer to Figure 2 The die sleeve 1 includes a main body 12 and a die mounting part 13 for connection with an extruder, and an installation space 11 is defined within the main body 12 and the die mounting part 13.

[0110] The main body 12 is a component of the mold sleeve 1, and the main body 12 provides space for the flow and molding of materials.

[0111] The mold mounting part 13 is part of the mold sleeve 1. The mold mounting part 13 is used to connect with the extruder and plays the role of fixing and positioning the mold sleeve 1, so that the mold sleeve 1 can work stably with the extruder during the extrusion production process, which is conducive to the material entering the forming channel 221 inside the mold sleeve 1 from the extruder.

[0112] The shape and structure of the main body 12 are not limited here; for example, it can be cylindrical or square.

[0113] By providing a dedicated die mounting part 13 for connection with the extruder, the die sleeve 1 is fixed to the extruder during the extrusion process, reducing the risk of loosening or displacement of the die sleeve 1 due to vibration, pressure, or other factors. This contributes to the stability and continuity of the extrusion process. Stable installation also helps to ensure uniform stress on the material during extrusion, which in turn helps to improve the dimensional accuracy and consistency of the finished products.

[0114] In some embodiments, please refer to Figure 2 The outer contour of the feed section 21 is larger than the outer contour of the extrusion section 22, so that the extrusion section 22 and the feed section 21 form a stepped structure 23. The main body 12 has a limiting groove 121 that communicates with the installation space 11, and at least part of the feed section 21 is located in the limiting groove 121.

[0115] The outer contour of the feed section 21 (the outer contour referred to in this application is the outer contour of the cross section perpendicular to the first direction Z1) can be larger than the outer contour of the extrusion section 22, so that the extrusion section 22 and the feed section 21 form a stepped structure 23. The main body 12 can be provided with a limiting groove 121 communicating with the installation space 11. At least part of the feed section 21 is located in the limiting groove 121, so that the feed section 21 is limited at least in the axial and circumferential directions.

[0116] In some embodiments, the mold mounting portion 13 is provided with a threaded hole 131, which is located on the side of the mounting space 11 away from the mold core 2.

[0117] For the mold mounting part 13 with threaded hole 131, the threaded hole 131 can be located on the side of the limiting groove 121 away from the discharge channel and communicate with the limiting groove 121. Thus, it is convenient for the mold mounting part 13 to be threadedly connected to the extruder and for the material to pass through.

[0118] In some embodiments, please refer to Figure 2 and Figure 3 The mold core 2 is a one-piece molded structure.

[0119] The one-piece molding structure helps reduce the number of parts and improve assembly efficiency. The molding channel 221 is directly molded in the mold core 2, without the need for assembly, which also helps reduce the errors caused by the extrusion part 22 to the molding channel 221 during the assembly process.

[0120] Furthermore, during the integral molding process, the manufacturing error of the molding channel 221 can be controlled by controlling the manufacturing error of the mold core 2, which helps to reduce the manufacturing error of the molding channel 221, and thus helps to reduce the manufacturing error of the aerosol-generated product 200.

[0121] The method of one-piece molding is not limited here; for example, it can be laser cutting, wire cutting, etc.

[0122] In some embodiments, please refer to Figure 2 The mold core 2 and the mold sleeve 1 are detachably connected.

[0123] Here, the mold core 2 is not permanently fixed in the mold sleeve 1, but rather a stable connection is achieved between the two through methods such as threaded connection, snap-fit ​​connection, and slot connection. During normal production, the mold core 2 and the mold sleeve 1 are tightly connected, providing molding space for the material, which is conducive to the normal production of the aerosol generation matrix 210. When mold wear occurs, when it is necessary to replace the mold core 2 with a different specification to produce different products, or when equipment maintenance or cleaning is required, the mold core 2 can be easily removed from the mold sleeve 1, the corresponding operation can be completed, and then it can be reinstalled to restore the mold's functionality.

[0124] 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 are included within the scope of protection of this application.

Claims

1. An extrusion die for generating aerosol products, characterized in that, include: A mold sleeve, wherein the mold sleeve is provided with an installation space; A mold core, at least partially disposed within the mounting space, the mold core including a feeding section and an extrusion section, the extrusion section being disposed at one end of the feeding section along a first direction of the mold core; the interior of the extrusion section having a forming channel extending along the first direction; The forming channel includes a first extrusion channel and a plurality of second extrusion channels. The first extrusion channel surrounds the outer periphery of the plurality of second extrusion channels, and each of the second extrusion channels is connected. Each of the second extrusion channels is formed by at least a pair of opposing first sidewalls and second sidewalls, and the distance between the plurality of pairs of first sidewalls and second sidewalls is equal.

2. The extrusion die according to claim 1, characterized in that, The forming channel includes a third extrusion channel, and the plurality of second extrusion channels are arranged around the outer periphery of the third extrusion channel. The third extrusion channel includes a third sidewall and a fourth sidewall arranged opposite to each other, and the distance between the third sidewall and the fourth sidewall is equal.

3. The extrusion die according to claim 2, characterized in that, The distance between the first sidewall and the second sidewall is equal to the distance between the third sidewall and the fourth sidewall; and / or, The distance between the third sidewall and the fourth sidewall is in the range of 0.1 mm to 0.5 mm.

4. The extrusion die according to any one of claims 1 to 3, characterized in that, The first extrusion channel includes a fifth sidewall and a sixth sidewall disposed opposite to each other, and the distance between the fifth sidewall and the sixth sidewall is equal.

5. The extrusion die according to claim 4, characterized in that, The distance between the first sidewall and the second sidewall is equal to the distance between the fifth sidewall and the sixth sidewall; and / or, The distance between the fifth sidewall and the sixth sidewall is in the range of 0.1 mm to 0.5 mm.

6. The extrusion die according to claim 1, characterized in that, The extrusion section includes a housing and a plurality of first columns disposed within the housing. The first columns are spaced apart, and a second extrusion channel is defined between the first columns. The outermost first column and the inner wall of the housing define the first extrusion channel.

7. The extrusion die according to claim 6, characterized in that, The extrusion section includes a second column disposed within the housing, and a plurality of first columns are arranged around the outer periphery of the second column, with the innermost first column and the second column defining a third extrusion channel.

8. The extrusion die according to claim 7, characterized in that, The axis of the second column coincides with the axis of the housing; and / or, The shape of the cross-section of the first column perpendicular to the first direction is one of the following: circular, polygonal, elliptical, racetrack-shaped, or irregular; and / or, The cross-sectional shape of the second column perpendicular to the first direction is one of the following: circular, polygonal, elliptical, racetrack-shaped, or irregular; and / or, The shape of the cross-section of the shell perpendicular to the first direction is one of a circle, a polygon, an ellipse, a racetrack shape, or an irregular shape.

9. The extrusion die according to any one of claims 1 to 3, characterized in that, The feeding section has multiple feeding channels, which extend along the first direction. The forming channel is connected to the feeding channel. The cross-sectional shape of the feeding channel perpendicular to the first direction is one of a circle, a polygon, an ellipse, a racetrack shape, or an irregular shape.

10. The extrusion die according to any one of claims 1 to 3, characterized in that, The distance between the first sidewall and the second sidewall is in the range of 0.1 mm to 0.5 mm.

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