Aerosol generating product containing sounding particles and preparation method thereof

Abstract

The invention discloses an aerosol generating product containing sounding particles and a preparation method of the aerosol generating product. The aerosol generating product comprises an outer tube (1), and an aerosol generating matrix unit, a plugging piece (2), a hollow tube (3) and a filtering piece (4) which are positioned in the outer tube (1), the hollow pipe fitting (3) and the filter piece (4) are wrapped and compounded by the molding paper (5); the upstream of the aerosol-generating substrate unit is also provided with a sealing piece (6); the aerosol-generating matrix unit comprises aerosol-generating particles (7) and sound-generating particles (8). The sound production particles are mixed in the particle type aerosol generation matrix unit, high-pressure carbon dioxide gas is added in the preparation process of the sound production particles, when the sound production particles are heated or damped, the sound production particles are broken and crackle sound is generated, and the interestingness of suction is improved. In addition, the sound production particles comprise aroma enhancement substances, and the aroma enhancement substances can be slowly released by the breakage of the sound production particles, so that the effects of slowly releasing and enhancing the aroma of the aerosol are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat-not-burn cigarettes, and in particular to an aerosol-generating product containing sound-generating particles and a preparation method thereof. Background Art

[0002] As consumers pay more attention to health issues and demand more personalized experience in cigarette products, the tobacco industry continues to respond to the upgrading of consumer demand and develop various smoking products with reduced tar and harm. Among them, heated cigarettes are different from traditional cigarette products in that they are heated in a way that satisfies consumers' sensory needs for cigarette products while providing a healthier smoking experience.

[0003] In the field of aerosol-generating products, particulate aerosol-generating products have attracted much attention due to their unique particulate aerosol-generating matrix. This type of product uses a specific preparation process to fill the aerosol-generating particles into an outer tube, so that the required aerosol can be generated when the user uses it. However, during the preparation and filling process, this type of product faces some problems that need to be solved urgently.

[0004] First, the smoke-generating agent contained in the aerosol-generating particles will cause the aerosol-generating particles to clump due to the external leakage of the smoke-generating agent during the preparation and storage process. In addition, if the ambient humidity is high, the aerosol-generating particles are also prone to absorb moisture in the air, causing the particles to become damp. The particles are prone to agglomeration after the smoke-generating agent has externally leaked or become damp, which not only affects the dispersion and fluidity of the particles, but may also cause the particles to be unable to be evenly filled into the outer tube during the filling process, thereby affecting the quality of the final product and user experience. In addition, the aerosol-generating particles absorb moisture from the air, which will also cause the amount of smoke from the aerosol-generating particles to decrease and increase the smoke temperature.

[0005] Secondly, the breakage rate of aerosol-generating particles during the filling process is also an issue that needs attention. Since the granular aerosol-generating matrix is ​​easily squeezed and rubbed by external forces during filling, if the strength and toughness of the particles are insufficient, they are prone to breakage during the filling process. This will not only reduce the yield of the product, but also affect the taste and smoke quality of the final product.

[0006] Finally, during the storage and transportation of aerosol-generating particles, the smoke-generating agent easily seeps onto the surface of cigarette paper, forming yellow spots. This not only affects the aesthetics of cigarettes, but may also have an adverse effect on the taste of cigarettes. In order to solve this problem, it is usually necessary to set a separate anti-seepage layer on the inside of the cigarette paper, which undoubtedly increases the production cost and process complexity. In addition, during the storage and transportation of aerosol-generating particles, the internal effective ingredients (such as smoke-generating agents, aroma components, etc.) will also be volatilized and lost, resulting in a short shelf life and a decrease in quality after being loaded into aerosol-generating products.

[0007] Therefore, developing a preparation method that can effectively solve the problems of aerosol-generating particles' moisture absorption and agglomeration and filling and crushing rate, and effectively prevent the extravasation of smoke-generating agents, is of great significance for improving the quality and user experience of particle-type aerosol-generating products. This is also one of the technical problems that need to be solved urgently in the current field of aerosol-generating products.

[0008] In addition, in the prior art, the method of adding flavors to the smoking core material unit of the aerosol generating product is usually to directly add flavors and fragrances during the preparation process of the smoking core material. During the smoking process, due to the high temperature of the smoking core material unit, the added flavors and fragrances will be quickly released, resulting in a strong aroma in the early stage of smoking, while the flavoring effect in the later stage of smoking is very weak, and the flavoring method is single.

[0009] In addition to the above problems, the current particle-type aerosol generating products also face the problem of difficulty in positioning the sealing parts and the filter parts in structure. Since the bulk aerosol generating particles cannot be fixed, they must be filled into the outer tube by filling, and the particles need to be fixed on both sides of the aerosol generating particle segment by means of sealing paper and sealing parts. In order to gather aerosols and increase the amount of smoke, the downstream of the sealing part is usually a cavity (cavity segment) defined by the outer tube, and the downstream of the cavity segment is the filter segment. The above-mentioned aerosol generating products are currently prepared by the filling method, and the production process sequence is: seal one end of the tube, and then fill the aerosol generating matrix, the sealing part and the filter part in turn from the other end. When filling the filter part, reserve the cavity distance between the sealing part, and the outer surface of the sealing part and the filter part is not glued to the inner wall of the paper tube. After being directly filled into a fixed position, they are fixed by friction with the inner wall of the paper tube. The problems with the above filling preparation method are: 1. During filling, the tube is placed vertically, and the positions of the plugging parts and filters on both sides of the cavity are difficult to locate, which easily leads to the problem of inconsistent axial lengths of the cavity sections of different samples; 2. The outer surfaces of the plugging parts and filters are fixed to the inner wall of the paper tube only by friction, and the plugging parts and filters are easily displaced toward the cavity section during transportation.

[0010] In order to solve the above problems, some cigarettes in this field will be loaded with paper tubes into the cavity section to facilitate the positioning of the sealing parts and the filter parts. However, the filling of the paper tube still has a new dilemma, that is, in order to better gather and circulate the smoke, the wall thickness of the paper tube should be as thin as possible, because if the wall thickness of the paper tube is too thick, it will block the original airflow channel of the sealing part, thereby increasing the suction resistance and the interception of the smoke, resulting in a decrease in the suction quality. However, if the wall thickness of the paper tube is too thin, it will cause the equipment that absorbs the paper tube during the filling process to be difficult to stably absorb the paper tube, and the failure rate during the absorption and filling process is relatively high. The stamping equipment currently used for filling cannot fill thin-walled empty tubes. Therefore, this dilemma leads to the fact that although the solution is feasible in concept, there are still many problems in implementation. In addition, in this method, the paper tube and the filter are filled separately, and the production efficiency is low.

[0011] In addition, the outer diameter of the paper tube loaded into the cavity section is difficult to match with the inner diameter of the outer tube. If the outer diameter of the paper tube is only slightly smaller than the inner diameter of the outer tube, it is not easy to align the paper tube when loading it. Perhaps the slightest deviation may cause the paper tube to not be loaded into the outer tube, or the outer tube to be damaged. However, if the outer diameter of the paper tube is much smaller than the inner diameter of the outer tube, although it is conducive to loading and alignment, the paper tube loaded into the cavity will move radially in the cavity because its outer diameter is much smaller than the cavity diameter, which will cause the axial center of the paper tube to not correspond to the axial center of the cigarette. Therefore, there are still many difficulties to be solved in how to simply realize the positioning of the blocking section and the filtering section.

[0012] In order to solve the above problems, the present invention is proposed. Summary of the invention

[0013] In view of the above shortcomings, the present invention discloses an aerosol generating product containing sound-generating particles and a preparation method thereof. The present invention mixes the sound-generating particles in a particle-type aerosol generating matrix unit, and high-pressure carbon dioxide gas is added to the sound-generating particles during the preparation process. When the sound-generating particles are heated or dampened, the sound-generating particles rupture and produce a crackling sound, which increases the fun of smoking. In addition, the sound-generating particles include a flavoring substance, and the rupture of the sound-generating particles will also cause the flavoring substance to be slowly released, thereby achieving the effect of slow-release flavoring of the aerosol.

[0014] In addition, the aerosol-generating particles with a coating layer are of a core-shell structure, wherein the core is the aerosol-generating particle body, and the shell is the coating layer coated on the outside of the aerosol-generating particle body. The present invention coats the surface of the aerosol-generating particles, and the coating layer on the surface of the aerosol-generating particles can avoid the problem of agglomeration of the aerosol-generating particles during placement, improve the fluidity of the aerosol-generating particles during canning, and reduce the particle breakage rate during filling to a certain extent. In addition, the aerosol generated by the aerosol-generating particle body when heated can still be smoothly released through the coating layer, and will not affect the smoke generation of the aerosol-generating particle body itself.

[0015] In terms of the structure of the aerosol generating product, the hollow section of the aerosol generating product of the present invention is limited by the empty tube 3, so the blocking part and the filter can be well positioned in the outer tube even if they are not bonded to the outer tube by an adhesive. In terms of the preparation method, the empty tube and the filter of the present invention are first compounded and cut into suitable lengths before filling. During filling, the suction device sucks one end of the filter in the filter composite, and the filling is completed at one time without sucking the empty tube. The thin-walled empty tube as a support will not affect the suction resistance of the cigarette, will not increase the interception of smoke, and even if the outer diameter of the empty tube is smaller than the inner diameter of the outer tube, because the filter composite is long enough and the friction is large enough, it is still fixed in the outer tube and will not shift.

[0016] The first aspect of the present invention provides an aerosol generating product containing sound-generating particles, which comprises an outer tube 1, and an aerosol generating substrate unit, a blocking member 2, an empty tube member 3 and a filter member 4 located in the outer tube 1;

[0017] The empty tube 3 and the filter 4 are wrapped and compounded by a molding paper 5;

[0018] The aerosol generating substrate unit also has a sealing member 6 upstream;

[0019] The aerosol generating substrate unit comprises aerosol generating particles 7 and sound generating particles 8;

[0020] The aerosol generating particle 7 is a core-shell structure, wherein the core is the aerosol generating particle body 71, and the shell layer is the coating layer 72 covering the outer surface of the aerosol generating particle body;

[0021] The sound-generating particle 8 is a core-shell structure, wherein the core is the sound-generating particle body, and the shell is the coating layer 72 coated on the outer surface of the sound-generating particle body. In other words, the structure of the sound-generating particle is basically similar to that of the aerosol-generating particle, both of which are coated with a coating layer.

[0022] Preferably, the material of the coating layer 72 includes but is not limited to ethyl cellulose, shellac, and carnauba wax.

[0023] Preferably, the mass of the coating layer 72 accounts for 5-30% of the mass of the aerosol-generating particle body 71 .

[0024] Preferably, the mass ratio of the aerosol-generating particles 7 to the sound-generating particles 8 is 5:1-20:1; the mesh size of the aerosol-generating particles 7 and the mesh size of the sound-generating particles 8 are in the same range.

[0025] Preferably, the empty tube 3 is selected from but not limited to a paper tube, a non-woven fabric tube or an acetate fiber bundle tube.

[0026] The wrapping paper 5 contains flavoring substances and / or smoke-generating substances. The flavoring substances include menthol, ionone, ethyl maltol, vanillin, rose absolute flavor or tobacco extract or nicotine salt. The smoke-generating substances include one or more of glycerol or propylene glycol.

[0027] The shaping paper 5 contains a porous material, and the porous material has a flavoring substance and / or a smoke-generating substance adsorbed therein;

[0028] The porous material includes activated carbon, ceramic molecular sieve inorganic materials, or polymer organic materials, or plant natural porous materials;

[0029] The porous material is selected from activated carbon, the amount of the activated carbon added to the molding paper 5 is 2-20 g / ㎡, and the mesh number of the activated carbon is 80-300 mesh;

[0030] Preferably, the activated carbon is located on the side of the shaping paper 5 close to the integrated outer tube 1, and the activated carbon has a flavoring substance adsorbed therein. During production, the shaping paper with the porous material (activated carbon) can be directly allowed to adsorb the flavoring substance, or the activated carbon can be allowed to adsorb the flavoring substance first and then added to the shaping paper. The flavoring substance here can also be replaced by a smoke-generating substance, etc.

[0031] That is to say, the plug-in paper 5 of the present invention can directly absorb the flavoring substance and / or the smoke-generating substance. Preferably, the plug-in paper is first loaded with a porous material, and then the flavoring substance and / or the smoke-generating substance is absorbed by the porous material. More preferably, the porous material is activated carbon.

[0032] The activated carbon in the shaping paper 5 is a porous material that can absorb flavoring substances. The flavoring method of adsorbing flavoring substances expands the selection range and form of flavoring substances, and is not limited to flavoring by bursting beads. As long as the flavoring substances can be adsorbed into the interior of the porous material, they can be used. In addition, since the flavoring substances are adsorbed into the interior of the activated carbon, the flavoring substances in the activated carbon are also slowly released during the suction process. This form of flavoring can achieve the sustained release of the flavoring substances and ensure the consistency of the aroma quality before and after suction. Furthermore, on this basis, flavoring substances and smoke-generating substances can also be added to the shaping paper at the same time, and the smoke-generating substances in the shaping paper in the filter section can supplement the smoke volume in the later stage of suction.

[0033] Furthermore, the activated carbon in the wrapping paper 5 is close to one side of the integrated outer tube 1. The advantage of such a configuration is that, on the one hand, the activated carbon reduces the friction force on the outside of the wrapping paper, thereby making it easier to fill the empty tube 3 and the filter 4 wrapped by the wrapping paper 5 into the outer tube 1. At this time, although the activated carbon reduces the friction force on the outside of the wrapping paper, since the filter composite of the present invention is long enough and the contact area between the composite and the outer tube is large after being wrapped by the wrapping paper, the friction force provided is sufficient to ensure the fixation of the filter composite, so the filter composite will not fall out of the outer tube. On the other hand, the activated carbon will make the shaping paper 5 have a certain black color. The activated carbon is set on one side of the shaping paper 5, and the two sides of the shaping paper can be distinguished by color. When the empty tube 3 and the filter 4 are wrapped with the shaping paper 5 to form a filter composite, the side without activated carbon is close to the empty tube 3 and the filter 4, which ensures that the activated carbon with the flavoring substance is close to the integrated outer tube 1. In order to facilitate filling, the outer diameter of the filter composite after the empty tube 3 and the filter 4 are wrapped with the shaping paper 5 is smaller than the inner diameter of the outer tube 1 by 0.1-0.35mm. Therefore, after filling, there will be a slight gap between the outside of the shaping paper and the inside of the integrated outer tube 1. Smoke may pass through the gap, and the activated carbon with the flavoring substance on the outside can replenish the aroma of the passing smoke, and the flavoring material on the inner wall or center of the empty tube 3 can replenish the aroma of the smoke flowing in the center. This double replenishment ensures that the smoke in every place can be replenished with aroma.

[0034] Preferably, the outer diameter of the filter composite after the empty tube member 3 and the filter element 4 are wrapped and compounded by the shaping paper 5 is smaller than the inner diameter of the outer tube 1 by 0.1-0.35 mm. The outer diameter of the filter composite is smaller than the inner diameter of the outer tube 1, so that the filter composite is easier to load into the outer tube, and there will be a slight gap between the outer side of the shaping paper and the inner side of the integrated outer tube 1 after loading, and smoke may pass through the gap. However, since the filter composite of the present invention is long enough and has a large contact area with the outer tube after being wrapped by the shaping paper, the friction force that can be provided is sufficient to ensure the fixation of the filter composite. Therefore, even if there is such a slight gap, the filter composite is still fixed in the outer tube and will not shift, so that the filter composite will not fall out of the outer tube.

[0035] More preferably, the outer diameter of the composite component after the hollow tube 3 and the filter element 4 are wrapped and composited by the molding paper 5 is smaller than the inner diameter of the outer tube 1 by 0.15 mm.

[0036] Preferably, the wall thickness of the hollow tube 3 is 0.1-0.6 mm;

[0037] Preferably, the hollow tube 3 further contains functional materials; and / or

[0038] The inner wall of the hollow tube 3 or the tube wall of the hollow tube 3 also contains a fragrance-enhancing and temperature-reducing layer, which is a high molecular polymer or a fragrance-enhancing coating. These high molecular polymers or fragrance-enhancing coatings are selected from materials that do not produce plastic odor at high temperatures, such as biowax, natural biopolymers such as alginic acid, gelatin, biopolysaccharides, etc. The functional material can be any form of material with cooling and fragrance-enhancing functions in the prior art.

[0039] Preferably, the filter element 4 includes but is not limited to an acetate fiber tow rod, a polyethylene terephthalate fiber tow rod, or a hollow acetate fiber tow rod, or a functional filter rod with explosive beads in the art.

[0040] Preferably, the outer tube 1 is a paper tube or a non-woven fabric tube.

[0041] Of course, in order to improve the cooling effect, the empty tube 3 may also have a vent hole penetrating the outer tube 1 , the shaping paper 5 and the tube wall of the empty tube 3 .

[0042] A second aspect of the present invention provides a method for preparing an aerosol-generating article comprising sound-emitting particles, comprising the following steps:

[0043] S1, preparing the aerosol generating particle body 71; in this step, the aerosol generating particle body can be prepared by any method in the prior art, and the present application is not limited thereto. In the process of preparing the aerosol generating particle body, a smoke generating agent, a flavor, etc. are added, or after the aerosol generating particle body is prepared, a smoke generating agent, a flavor, etc. are adsorbed separately, and after the adsorption is completed and dried, the next step of coating is performed.

[0044] S2, preparing a coating material mixture;

[0045] S3, placing the aerosol-generating particle body obtained in step S1 into a coating device, spraying the coating material mixture obtained in step S2, so that the coating material mixture is evenly attached to the surface of the aerosol-generating particle body to form a continuous, dense and durable coating film; after the coating is completed, the aerosol-generating particle body particles with the coating material are dried to solidify the coating layer and tightly adhere to the aerosol-generating particle body, thereby obtaining aerosol-generating particles with a coating layer 7. This step helps to improve the stability and durability of the coating layer.

[0046] S4, preparing the sound-generating particle body;

[0047] S5, placing the sound-generating particle body obtained in step S4 into a coating device, spraying the coating material mixture obtained in step S2 to make the coating material mixture evenly adhere to the surface of the sound-generating particle body; after the coating is completed, drying the sound-generating particle body particles with the coating material to make the coating layer solidify and tightly adhere to the sound-generating particle body, thereby obtaining the sound-generating particle 8 with the coating layer;

[0048] S6, wrapping the empty tube 3 and the filter 4 with molding paper 5 to form a filter composite; mixing the aerosol generating particles obtained in step S3 and the sound-generating particles obtained in step S5 in proportion to obtain aerosol generating matrix unit mixed particles, and then using the outer tube 1 to fill the mixed particles, the plugging component 2 and the filter composite, the empty tube 3 in the filter composite is close to the plugging component 2, and then the sealing component 6 is set to obtain an aerosol generating product containing sound-generating particles.

[0049] Preferably, in step S2, the method for preparing the coating material is: adding the main body of the coating material into a solvent and stirring to prepare a coating material mixed solution with a mass concentration of 4-15%.

[0050] The coating material includes but is not limited to ethyl cellulose, shellac, carnauba wax, and the solvent includes alcohols, such as anhydrous ethanol.

[0051] Preferably, in step S3, the coating process is carried out while spraying and stirring for 10-20 minutes.

[0052] Preferably, in step S3, the drying conditions after coating are completed include placing in an oven for drying, or placing in dry air for air drying, the drying conditions in the oven are: placing in an oven at 45-60°C and baking for 10-15 minutes; the dry air air drying conditions are: placing in dry air at 45-60°C and air drying for 5-10 minutes.

[0053] Preferably, in step S4, preparing the sound-emitting particle body comprises the following steps:

[0054] S41, mixed heating

[0055] Mix the syrup and flavoring substances evenly, then dissolve them in a small amount of water (the amount of water is generally less than 4% of the total amount of raw materials). Place the mixture in a sealed container and heat it to about 150°C. During the heating process, the inside of the container needs to be partially vacuumed to reduce moisture and prevent the formation of bubbles.

[0056] S42, add high pressure gas

[0057] When the mixture is heated to the appropriate temperature, high-pressure carbon dioxide gas is injected; the pressure of carbon dioxide gas usually reaches 600 pounds per square inch or higher. Under high pressure, carbon dioxide gas will dissolve and envelop the raw materials, forming a large number of tiny bubbles. This mixing process usually takes about 6 minutes to ensure that the carbon dioxide gas is fully dissolved.

[0058] S43, cooling and depressurization

[0059] After the gas mixing is completed, the syrup is cooled under high pressure to allow carbon dioxide bubbles to be stably coated in the syrup. The tiny bubbles converge to form large bubbles with a diameter of about 225 microns. After the cooling is completed, the pressure in the container is released. At this time, due to the sudden drop in pressure, the sugar cubes will naturally collapse and break into many small pieces, which are the sound-generating particles. These sound-generating particles still contain many tiny carbon dioxide bubbles.

[0060] S44. Handling and packaging

[0061] The broken sound-generating particles are screened and processed to ensure their size and shape; after the processing is completed, the sound-generating particles are packaged and sealed for later use.

[0062] Preferably, in step S41, the flavoring substance includes flavors and fragrances and / or porous materials adsorbed with flavors and fragrances; the porous material includes activated carbon, ceramic molecular sieve inorganic materials, or polymer organic materials, or natural porous materials from plants.

[0063] The boiling point of the flavor is higher than the dissolution temperature of the syrup, and usually the boiling point of the flavor is higher than 200° C. This is to ensure that the flavor is volatilized by heat after the syrup is dissolved to add fragrance to the aerosol.

[0064] Preferably, there is a whole particle process between step S5 and step S6, specifically: placing the smoke particles on a vibration device, starting the vibration device, and loosening the smoke particles under the action of vibration. The functions of the whole particle process are: 1. It helps to disperse the smoke particles and ensure that the smoke particles have good fluidity during the filling process, so that they can be evenly and continuously filled into the cigarettes. 2. It removes impurities and lumps. Whole particle is an important link in the cigarette manufacturing process, which directly affects the quality and taste of the cigarettes.

[0065] Preferably, the vibration device comprises a vibration screen or a vibration table.

[0066] Preferably, in step S6, multiple sections of the empty tube 3 and the filter element 4 are first composited, and then cut into multiple sections of filter composites of appropriate lengths before the next step of filling is performed.

[0067] The sealing member 6 of the present invention can be a sealing member filled into the outer tube, or a sealing film attached to the end of the outer tube.

[0068] The blocking member 2 in the present invention includes but is not limited to an integrally formed polymer material rod with an axial airflow channel. Any blocking member 2 in the art that can block the aerosol generating matrix 6 and prevent it from moving into the downstream empty pipe member 3 can be used.

[0069] Compared with the prior art, the present invention has the following beneficial effects:

[0070] In a first aspect, the present invention mixes sound-emitting particles in a particle-type aerosol-generating matrix unit:

[0071] 1. The present invention mixes sound-generating particles in a particle-type aerosol-generating matrix unit, and high-pressure carbon dioxide gas is added to the sound-generating particles during the preparation process. These gases are coated in syrup to form a large number of tiny bubbles. During the suction process, when the sound-generating particles are heated or damp, the syrup begins to dissolve, which makes the outer wall of the small space encapsulating the small bubbles fragile. As the syrup further dissolves, the carbon dioxide bubbles will be released, pushing the sound-generating particles to crack. In addition, the carbon dioxide gas will expand rapidly after being heated, and the volume will increase. This expansion force produces a thrust, pushing the syrup to release outward, and producing a crackling sound, which increases the fun of suction, and the rupture of the bubbles will also create a jumping illusion in the aerosol-generating product. In addition, the sound-generating particles include flavoring substances, and the rupture of the sound-generating particles will also cause the flavoring substances to be slowly released, thereby playing an effect of slow-release flavoring of the aerosol.

[0072] 2. The aroma-enhancing substances in the sound-emitting particles include flavors and fragrances and / or porous materials adsorbed with flavors and fragrances, and the porous materials include activated carbon, ceramic molecular sieve inorganic materials, or polymer organic materials, or natural porous materials from plants. Since the aroma-enhancing substances are adsorbed inside the porous materials, the aroma-enhancing substances in the porous materials are also slowly released during the inhalation process. This form of aroma-enhancing can achieve the slow release of the aroma-enhancing substances and ensure the consistency of the aroma quality before and after inhalation.

[0073] 3. The outer surface of the sound-generating particles is coated with a coating layer. The coating layer on the surface can effectively prevent the passage of moisture in the air, isolate the inner sound-generating particle body from the outside world, effectively reduce its hygroscopicity, and prevent the inner flavors and fragrances of the sound-generating particle body from seeping out to the particle surface, thereby avoiding the problem of agglomeration of the sound-generating particles during placement and improving the fluidity of the sound-generating particles during canning. Coating the surface of the sound-generating particles can reduce the particle crushing rate during filling to a certain extent. The coating layer can play a certain protective role, reducing the crushing of the particles due to external force squeezing and friction during the filling process. In addition, the coating can also improve the fluidity and uniformity of the particles, so that the particles can flow more smoothly during filling, and further reduce the damage caused by collisions between particles. The coating layer on the surface of the sound-generating particles can prevent the inner flavors and fragrances of the sound-generating particles from seeping out to the surface of the sound-generating particles, and also avoid the problem of yellow spots caused by the infiltration of flavors and fragrances on the cigarette paper. There is no need to set an anti-seepage layer on the cigarette paper, which reduces the requirements for cigarette paper. The coating layer on the surface of the sound-generating particles can also lock in the flavors and fragrances inside the sound-generating particles, thereby preventing the volatilization and loss of the internal components of the sound-generating particles during storage.

[0074] In a second aspect, the aerosol-generating particles of the present invention have a coating layer:

[0075] 4. The present invention coats the surface of the aerosol-generating particles. The coating layer on the surface of the aerosol-generating particles can effectively prevent the passage of moisture in the air, isolate the internal aerosol-generating particle body from the outside world, effectively reduce its hygroscopicity, and prevent the smoke-generating agent (only the smoke-generating agent is used as an example, and also includes flavors, etc.) inside the aerosol-generating particle body from infiltrating to the particle surface, thereby avoiding the problem of agglomeration of the aerosol-generating particles during placement and improving the fluidity of the aerosol-generating particles during canning. It has been verified that after coating with the method of the present invention, the aerosol-generating particles were placed at a temperature of 25°C and a humidity of 60% for 15 days without agglomeration, and the fluidity was still very good, while the aerosol-generating particles that were not coated had obvious agglomeration. In addition, the aerosol-generating particles are prevented from absorbing moisture in the air, and the problem of a decrease in the amount of smoke from the aerosol-generating particles and an increase in the smoke temperature is also avoided.

[0076] 5. Coating the surface of aerosol-generating particles can reduce the particle breakage rate during filling to a certain extent. The coating layer can play a certain protective role and reduce the breakage of particles due to external force extrusion and friction during the filling process. In addition, the coating can also improve the fluidity and uniformity of the particles, allowing the particles to flow more smoothly during filling, and further reduce the damage caused by collision between particles.

[0077] 6. The coating layer on the surface of the aerosol-generating particles of the present invention can prevent the smoke-generating agent inside the aerosol-generating particles from seeping out to the surface of the aerosol-generating particles, and also avoids the problem of yellow spots caused by the smoke-generating agent seeping out to the cigarette paper. There is no need to set an anti-seepage layer on the cigarette paper, which reduces the requirements for cigarette paper.

[0078] 7. The coating layer on the surface of the aerosol-generating particles of the present invention can also lock the internal components of the aerosol-generating particles (such as smoke-generating agents, aroma components, etc.), thereby preventing the internal components of the aerosol-generating particles from volatilizing and dissipating during storage.

[0079] 8. The coating material of the present invention is selected from ethyl cellulose. The coating layer formed by the material can not only effectively prevent the passage of water, but also has a certain air permeability. Therefore, when the aerosol-generating particle body is heated to generate aerosol, the aerosol can still smoothly pass through the coating layer and be gradually released, which will not affect the smoke generation amount of the aerosol-generating particle body itself.

[0080] 9. The thickness of the coating layer of the present invention and the preparation conditions during the coating process ensure the uniformity of the coating layer. The thickness and uniformity of the coating layer also have a great influence on the volatility. If the coating layer is too thick or uneven, it may hinder the release of volatile substances. However, the appropriate thickness and uniformity of the coating layer can ensure that the volatile substances can pass through the coating layer smoothly when heated.

[0081] In a third aspect, the present invention first wraps the empty tube 3 and the filter 4 with a shaping paper 5 to form a filter composite:

[0082] 10. Since the hollow section in the aerosol generating product of the present invention is limited by the hollow tube, the blocking member and the filter member can be well positioned in the outer tube even if they are not bonded to the outer tube by an adhesive.

[0083] 11. In the aerosol generating product of the present invention, since the filter composite is long enough and the friction force is large enough, it remains fixed in the outer tube and will not shift, so that the filter composite will not fall out of the outer tube.

[0084] 12. In terms of preparation method, the empty tube and filter of the present invention are first compounded, cut into appropriate lengths and then filled. During filling, the suction device sucks one end of the filter in the filter composite, and no longer needs to suck the empty tube. Therefore, the tube wall of the empty tube can be as thin as possible while reducing the suction resistance and smoke interception. The thin-walled empty tube as a support will not affect the suction resistance of the cigarette and will not increase the smoke interception. The tube wall of the empty tube of the aerosol generating product of the present invention can reach 0.1-0.6mm. The contact area between the filter and the suction device is larger, and it is easier to be stably sucked.

[0085] 13. In terms of preparation method, since the suction device sucks the filter composite during filling, the filling is completed at one time, and there is no need to suck the empty pipe separately, which also avoids the empty pipe and the filter filling twice, thereby improving efficiency.

[0086] 14. The outer diameter of the empty tube of the present invention is smaller than the inner diameter of the outer tube. Since the empty tube is compounded with the filter element, even if the outer diameter of the empty tube is smaller than the inner diameter of the outer tube, it is still fixed in the outer tube and will not shift, thus ensuring that the axial center of the empty tube corresponds to the axial center of the cigarette.

[0087] 15. The shaping paper 5 of the present invention contains activated carbon. Activated carbon is a porous material that can absorb flavoring substances. The flavoring method of absorbing flavoring substances expands the selection range and form of flavoring substances. It is not limited to flavoring by bursting beads. As long as the flavoring substances can be adsorbed into the porous material, they can be used. In addition, since the flavoring substances are adsorbed into the activated carbon, the flavoring substances in the activated carbon are also slowly released during the suction process. This form of flavoring can achieve the sustained release of the flavoring substances and ensure the consistency of the aroma quality before and after suction. Furthermore, on this basis, flavoring substances and smoke-generating substances can be added to the shaping paper at the same time. The smoke-generating substances in the shaping paper in the filter section can supplement the smoke volume in the later stage of suction.

[0088] Furthermore, the activated carbon in the wrapping paper 5 is close to one side of the integrated outer tube 1. The advantage of such a configuration is that, on the one hand, the activated carbon reduces the friction force on the outside of the wrapping paper, thereby making it easier to fill the empty tube 3 and the filter 4 wrapped by the wrapping paper 5 into the outer tube 1. At this time, although the activated carbon reduces the friction force on the outside of the wrapping paper, since the filter composite of the present invention is long enough and the contact area between the composite and the outer tube is large after being wrapped by the wrapping paper, the friction force provided is sufficient to ensure the fixation of the filter composite, so the filter composite will not fall out of the outer tube. On the other hand, the activated carbon will make the shaping paper 5 have a certain black color. The activated carbon is set on one side of the shaping paper 5, and the two sides of the shaping paper can be distinguished by color. When the empty tube 3 and the filter 4 are wrapped with the shaping paper 5 to form a filter composite, the side without activated carbon is close to the empty tube 3 and the filter 4, which ensures that the activated carbon with the flavoring substance is close to the integrated outer tube 1. In order to facilitate filling, the outer diameter of the filter composite after the empty tube 3 and the filter 4 are wrapped with the shaping paper 5 is smaller than the inner diameter of the outer tube 1 by 0.1-0.35mm. Therefore, after filling, there will be a slight gap between the outside of the shaping paper and the inside of the integrated outer tube 1. Smoke may pass through the gap, and the activated carbon with the flavoring substance on the outside can replenish the aroma of the passing smoke, and the flavoring material on the inner wall or center of the empty tube 3 can replenish the aroma of the smoke flowing in the center. This double replenishment ensures that the smoke in every place can be replenished with aroma. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] Figure 1 Schematic diagram of the structure of an aerosol-generating article containing sound-emitting particles.

[0090] Figure 2 Schematic diagram of the structure of aerosol-generating particles with a coating layer (the structure of the sound-generating particles is similar to that of the aerosol-generating particles, and the schematic diagram of the sound-generating particle structure is omitted here).

[0091] The names corresponding to the figure numbers are: 1-outer tube, 2-sealing member, 3-empty tube member, 4-filter member, 5-molding paper, 6-sealing member, 7-aerosol generating particles, 8-sounding particles, 71-aerosol generating particle body, 72-coating layer. DETAILED DESCRIPTION

[0092] The present invention is further described in detail below in conjunction with embodiments.

[0093] Those skilled in the art will appreciate that the following examples are only used to illustrate the present invention and should not be considered to limit the scope of the present invention. If no specific techniques or conditions are specified in the examples, the techniques or conditions described in the literature in the art or the product specifications are used. If the manufacturer of the materials or equipment used is not specified, they are all conventional products that can be purchased.

[0094] Those skilled in the art will appreciate that, unless expressly stated otherwise, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" to another element, it may be directly connected to the other element, or there may be intermediate elements. In addition, the "connection" used herein may include wireless connections.

[0095] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two. The terms "inside", "upper", "lower", etc., indicating positions or state relationships, are based on the positions or state relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operate in a specific position, and therefore cannot be understood as limiting the present invention.

[0096] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0097] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0098] Example 1

[0099] like Figure 1 As shown, this embodiment provides an aerosol generating product containing sound-generating particles, which includes an outer tube 1, and an aerosol generating matrix unit, a blocking member 2, an empty tube member 3 and a filter member 4 located in the outer tube 1;

[0100] The empty tube 3 and the filter 4 are wrapped and compounded by a molding paper 5;

[0101] The aerosol generating substrate unit also has a sealing member 6 upstream;

[0102] The aerosol generating substrate unit comprises aerosol generating particles 7 and sound generating particles 8;

[0103] like Figure 2 As shown, the aerosol generating particle 7 is a core-shell structure, wherein the core is the aerosol generating particle body 71, and the shell layer is the coating layer 72 coated on the outer surface of the aerosol generating particle body;

[0104] The sound-generating particle 8 is a core-shell structure, wherein the core is the sound-generating particle body, and the shell is the coating layer 72 coated on the outer surface of the sound-generating particle body. In other words, the structure of the sound-generating particle is basically similar to that of the aerosol-generating particle, both of which are coated with a coating layer.

[0105] The material of the coating layer 72 includes ethyl cellulose.

[0106] The mass of the coating layer 72 accounts for 5% of the mass of the aerosol-generating particle body 71 .

[0107] The mass ratio of the aerosol generating particles 7 to the sound generating particles 8 is 10:1, and the mesh size of the aerosol generating particles 7 and the mesh size of the sound generating particles 8 are within the same range.

[0108] Preferably, the empty tube 3 is a paper tube.

[0109] The molding paper 5 contains activated carbon, the added amount of the activated carbon is 10 g / ㎡, and the mesh number of the activated carbon is 80-300 meshes.

[0110] The activated carbon is located on a side of the shaping paper 5 close to the integrated outer tube 1 , and the activated carbon has aroma enhancing substances adsorbed therein.

[0111] The activated carbon in the shaping paper 5 is a porous material that can absorb flavoring substances. The flavoring method of adsorbing flavoring substances expands the selection range and form of flavoring substances, and is not limited to flavoring by bursting beads. As long as the flavoring substances can be adsorbed into the interior of the porous material, they can be used. In addition, since the flavoring substances are adsorbed into the interior of the activated carbon, the flavoring substances in the activated carbon are also slowly released during the suction process. This form of flavoring can achieve the sustained release of the flavoring substances and ensure the consistency of the aroma quality before and after suction. Furthermore, on this basis, flavoring substances and smoke-generating substances can also be added to the shaping paper at the same time, and the smoke-generating substances in the shaping paper in the filter section can supplement the smoke volume in the later stage of suction.

[0112] Furthermore, the activated carbon in the wrapping paper 5 is close to one side of the integrated outer tube 1. The advantage of such a configuration is that, on the one hand, the activated carbon reduces the friction force on the outside of the wrapping paper, thereby making it easier to fill the empty tube 3 and the filter 4 wrapped by the wrapping paper 5 into the outer tube 1. At this time, although the activated carbon reduces the friction force on the outside of the wrapping paper, since the filter composite of the present invention is long enough and the contact area between the composite and the outer tube is large after being wrapped by the wrapping paper, the friction force provided is sufficient to ensure the fixation of the filter composite, so the filter composite will not fall out of the outer tube. On the other hand, the activated carbon will make the shaping paper 5 have a certain black color. The activated carbon is set on one side of the shaping paper 5, and the two sides of the shaping paper can be distinguished by color. When the empty tube 3 and the filter 4 are wrapped with the shaping paper 5 to form a filter composite, the side without activated carbon is close to the empty tube 3 and the filter 4, which ensures that the activated carbon with the flavoring substance is close to the integrated outer tube 1. In order to facilitate filling, the outer diameter of the filter composite after the empty tube 3 and the filter 4 are wrapped with the shaping paper 5 is smaller than the inner diameter of the outer tube 1 by 0.15mm. Therefore, after filling, there will be a slight gap between the outside of the shaping paper and the inside of the integrated outer tube 1. Smoke may pass through the gap, and the activated carbon with the flavoring substance on the outside can replenish the aroma of the passing smoke, and the flavoring material on the inner wall or center of the empty tube 3 can replenish the aroma of the smoke flowing in the center. This double replenishment ensures that the smoke in every place can be replenished with aroma.

[0113] The outer diameter of the composite filter element after the empty tube 3 and the filter element 4 are wrapped with the shaping paper 5 is smaller than the inner diameter of the outer tube 1 by 0.15 mm. The outer diameter of the composite filter element is smaller than the inner diameter of the outer tube 1, so that the composite filter element is easier to load into the outer tube, and there will be a slight gap between the outer side of the shaping paper and the inner side of the integrated outer tube 1 after loading, and smoke may pass through the gap. However, since the composite filter element of the present invention is long enough and has a large contact area with the outer tube after being wrapped with the shaping paper, the friction force that can be provided is sufficient to ensure the fixation of the composite filter element. Therefore, even if there is such a slight gap, the composite filter element is still fixed in the outer tube and will not shift, so that the composite filter element will not fall out of the outer tube.

[0114] The wall thickness of the hollow tube 3 is 0.25 mm.

[0115] Preferably, the hollow tube 3 further contains functional materials; and / or

[0116] The filter element 4 is a solid acetate fiber bundle rod.

[0117] The outer tube 1 is a paper tube.

[0118] The blocking member 2 in the present invention is an integrally formed polymer material rod with an axial air flow channel.

[0119] The method for preparing an aerosol-generating article containing sound-emitting particles in this embodiment comprises the following steps:

[0120] S1, preparing aerosol-generating particle bodies 71;

[0121] S2, preparing a coating material mixture;

[0122] S3, placing the aerosol-generating particle body obtained in step S1 into a coating device, spraying the coating material mixture obtained in step S2, so that the coating material mixture is evenly attached to the surface of the aerosol-generating particle body to form a continuous, dense and durable coating film; after the coating is completed, the aerosol-generating particle body particles with the coating material are dried to solidify the coating layer and tightly adhere to the aerosol-generating particle body, thereby obtaining aerosol-generating particles with a coating layer 7. This step helps to improve the stability and durability of the coating layer.

[0123] S4, preparing the sound-generating particle body;

[0124] S5, placing the sound-generating particle body obtained in step S4 into a coating device, spraying the coating material mixture obtained in step S2 to make the coating material mixture evenly adhere to the surface of the sound-generating particle body; after the coating is completed, drying the sound-generating particle body particles with the coating material to make the coating layer solidify and tightly adhere to the sound-generating particle body, thereby obtaining the sound-generating particle 8 with the coating layer;

[0125] S6, wrapping the empty tube 3 and the filter 4 with molding paper 5 to form a filter composite; mixing the aerosol generating particles obtained in step S3 and the sound-generating particles obtained in step S5 in proportion to obtain aerosol generating matrix unit mixed particles, and then using the outer tube 1 to fill the mixed particles, the plugging component 2 and the filter composite, the empty tube 3 in the filter composite is close to the plugging component 2, and then the sealing component 6 is set to obtain an aerosol generating product containing sound-generating particles.

[0126] In step S2, the method for preparing the coating material is: adding the main body of the coating material into the solvent and stirring to prepare a coating material mixed solution with a mass concentration of 5%.

[0127] The coating material includes but is not limited to ethyl cellulose, shellac, carnauba wax, and the solvent includes alcohols, such as anhydrous ethanol.

[0128] In step S3, the coating process is carried out while stirring, and the duration is 10 minutes.

[0129] In step S3, after coating is completed, the drying conditions include placing it in an oven for drying, or placing it in dry air for air drying. The drying conditions in the oven are: placing it in an oven at 60°C and baking for 10 minutes; the dry air air drying conditions are: placing it in dry air at 60°C and air drying for 5 minutes.

[0130] In step S4, the sound-generating particle body is prepared, including the following steps:

[0131] S41, mixed heating

[0132] Mix the syrup and flavoring substances evenly, then dissolve them in a small amount of water (the amount of water is generally less than 4% of the total amount of raw materials). Place the mixture in a sealed container and heat it to about 150°C. During the heating process, the inside of the container needs to be partially vacuumed to reduce moisture and prevent the formation of bubbles.

[0133] S42, add high pressure gas

[0134] When the mixture is heated to the appropriate temperature, high-pressure carbon dioxide gas is injected; the pressure of carbon dioxide gas usually reaches 600 pounds per square inch or higher. Under high pressure, carbon dioxide gas will dissolve and envelop the raw materials, forming a large number of tiny bubbles. This mixing process usually takes about 6 minutes to ensure that the carbon dioxide gas is fully dissolved.

[0135] S43, cooling and depressurization

[0136] After the gas mixing is completed, the syrup is cooled under high pressure to allow carbon dioxide bubbles to be stably coated in the syrup. The tiny bubbles converge to form large bubbles with a diameter of about 225 microns. After the cooling is completed, the pressure in the container is released. At this time, due to the sudden drop in pressure, the sugar cubes will naturally collapse and break into many small pieces, which are the sound-generating particles. These sound-generating particles still contain many tiny carbon dioxide bubbles.

[0137] S44. Handling and packaging

[0138] The broken sound-generating particles are screened and processed to ensure their size and shape; after the processing is completed, the sound-generating particles are packaged and sealed for later use.

[0139] In step S41, the aroma-enhancing substance includes a porous material adsorbed with flavors and fragrances; the porous material includes activated carbon.

[0140] The boiling point of the flavor is higher than the dissolution temperature of the syrup, and usually the boiling point of the flavor is higher than 200° C. This is to ensure that the flavor is volatilized by heat after the syrup is dissolved to add fragrance to the aerosol.

[0141] There is also a whole particle process between step S5 and step S6, specifically: placing the smoke particles on a vibration device, starting the vibration device, and loosening the smoke particles under the action of vibration. The role of the whole particle process is: 1. It helps to disperse the smoke particles and ensure that the smoke particles have good fluidity during the filling process, so that they can be evenly and continuously filled into the cigarette. 2. Remove impurities and lumps. Whole particle is an important link in the cigarette manufacturing process, which directly affects the quality and taste of the cigarette.

[0142] Vibrating equipment includes vibrating screens.

[0143] In step S6, the multiple sections of the empty tube 3 and the filter element 4 are first combined, and then cut into multiple sections of filter composites of appropriate lengths before the next step of filling.

[0144] The sealing member 6 is a sealing film attached to the end of the outer tube.

[0145] It has been verified that after being coated by the method of this embodiment, the aerosol-generating particles were placed at a temperature of 25° C. and a humidity of 60% for 15 days without agglomeration and the fluidity was still very good, while the aerosol-generating particles that were not coated showed obvious agglomeration.

Claims

1. An aerosol-generating article comprising sound-emitting particles, characterized in that It comprises an outer tube (1), and an aerosol generating matrix unit, a blocking member (2), an empty tube member (3) and a filter member (4) located inside the outer tube (1); The empty tube (3) and the filter (4) are wrapped and compounded by a molding paper (5); The aerosol generating substrate unit also has a sealing member (6) upstream thereof; The aerosol generating substrate unit comprises aerosol generating particles (7) and sound generating particles (8); The aerosol-generating particle (7) is a core-shell structure, wherein the core is the aerosol-generating particle body (71), and the shell layer is a coating layer (72) coated on the outer surface of the aerosol-generating particle body; The sound-generating particle (8) is a core-shell structure, wherein the core is the sound-generating particle body, and the shell is the coating layer (72) coated on the outer surface of the sound-generating particle body.

2. An aerosol-generating article comprising sound-emitting particles according to claim 1, characterized in that The material of the coating layer (72) includes ethyl cellulose, shellac, and carnauba wax; The mass of the coating layer (72) accounts for 5-30% of the mass of the aerosol-generating particle body (71).

3. An aerosol-generating article comprising sound-emitting particles according to claim 1, characterized in that The mass ratio of the aerosol-generating particles (7) to the sound-generating particles (8) is 5:1-20:1; The mesh size of the aerosol-generating particles (7) and the mesh size of the sound-emitting particles (8) are within a consistent range.

4. An aerosol-generating article comprising sound-emitting particles according to claim 1, characterized in that The empty tube (3) is a paper tube, a non-woven fabric tube or an acetate fiber bundle tube; The plug-in paper (5) contains a flavoring substance and / or a smoke-generating substance; The shaping paper (5) contains a porous material, and the porous material has a flavoring substance and / or a smoke-generating substance adsorbed therein; the porous material includes activated carbon, a ceramic molecular sieve type inorganic material, or a polymer type organic material, or a natural porous material of a plant; The outer diameter of the composite filter component after the hollow tube component (3) and the filter component (4) are wrapped and combined by the molding paper (5) is smaller than the inner diameter of the outer tube (1) by 0.1-0.35 mm; The wall thickness of the hollow tube (3) is 0.1-0.6 mm; The hollow tube (3) further contains functional materials, and / or the inner wall of the hollow tube (3) or the tube wall of the hollow tube (3) further contains a fragrance-enhancing and temperature-reducing layer, wherein the fragrance-enhancing and temperature-reducing layer is a high molecular polymer or a fragrance-enhancing coating; The filter element (4) comprises an acetate fiber tow rod, a polyethylene terephthalate fiber tow rod, or a hollow acetate fiber tow rod; The outer tube (1) is a paper tube or a non-woven fabric tube.

5. A method for preparing an aerosol-generating product comprising sound-emitting particles according to any one of claims 1 to 4, characterized in that: It includes the following steps: S1, preparing aerosol-generating particle bodies (71); S2, preparing a coating material mixture; S3, placing the aerosol-generating particle body obtained in step S1 into a coating device, spraying the coating material mixture obtained in step S2 so that the coating material mixture is evenly attached to the surface of the aerosol-generating particle body; after the coating is completed, drying the aerosol-generating particle body particles with the coating material so that the coating layer is solidified and tightly attached to the aerosol-generating particle body, thereby obtaining the aerosol-generating particle with the coating layer (7); S4, preparing the sound-generating particle body; S5, placing the sound-generating particle body obtained in step S4 into a coating device, spraying the coating material mixture obtained in step S2, so that the coating material mixture is evenly attached to the surface of the sound-generating particle body; after the coating is completed, drying the sound-generating particle body particles with the coating material, so that the coating layer is solidified and tightly attached to the sound-generating particle body, and the sound-generating particle with the coating layer (8) is obtained; S6, wrapping the empty tube (3) and the filter (4) with molding paper (5) to form a filter composite; mixing the aerosol generating particles obtained in step S3 and the sound-generating particles obtained in step S5 in proportion to obtain aerosol generating matrix unit mixed particles, and then filling the mixed particles, the plugging member (2) and the filter composite with an outer tube (1), wherein the empty tube (3) in the filter composite is close to the plugging member (2), and then the sealing member (6) is arranged to obtain an aerosol generating product containing sound-generating particles.

6. The preparation method according to claim 5, characterized in that: In step S2, the method for preparing the coating material is: adding the main body of the coating material into the solvent and stirring to prepare a coating material mixed solution with a mass concentration of 4-15%; The coating material includes but is not limited to ethyl cellulose, shellac, carnauba wax, and the solvent includes alcohols, such as anhydrous ethanol.

7. The preparation method according to claim 5, characterized in that: In step S3 and step S5, the coating process is carried out while stirring, and the duration is 10-20 minutes; After coating is completed, the drying conditions include placing it in an oven for drying, or placing it in dry air for air drying. The drying conditions in the oven are: placing it in an oven at 45-60°C and baking for 10-15 minutes; the dry air drying conditions are: placing it in dry air at 45-60°C and air drying for 5-10 minutes.

8. The preparation method according to claim 5, characterized in that: In step S4, the sound-generating particle body is prepared, including the following steps: S41, mixed heating Mix the syrup and flavoring substances, then dissolve them in water, place the mixture in a sealed container, and heat it; S42, add high pressure gas When the mixed liquid is heated to an appropriate temperature, high-pressure carbon dioxide gas is injected. Under high pressure, the carbon dioxide gas will dissolve and encapsulate the raw materials, forming a large number of tiny bubbles; S43, Cooling and depressurization After the gas mixing is completed, the syrup is cooled under high pressure to allow carbon dioxide bubbles to stably coat the syrup, and small bubbles gather to form large bubbles. After the cooling is completed, the pressure in the container is released. At this time, due to the sudden drop in pressure, the sugar cubes will naturally collapse and break into many small pieces, which are the sound-generating particles. These sound-generating particles still contain many carbon dioxide bubbles. S44. Handling and packaging The broken sound-generating particles are screened and processed to ensure their size and shape; after the processing is completed, the sound-generating particles are packaged and sealed for later use.

9. The preparation method according to claim 8, characterized in that: In step S41, the flavoring substance includes flavors and fragrances and / or porous materials adsorbed with flavors and fragrances; the porous materials include activated carbon, ceramic molecular sieve inorganic materials, or polymer organic materials, or natural porous materials from plants; The boiling point of the flavors and spices is higher than the dissolution temperature of the syrup, and usually the boiling point of the flavors and spices is higher than 200°C.

10. The preparation method according to claim 5, characterized in that: There is also a particle reorganization process between step S5 and step S6, specifically: placing the aerosol-generating particles and the sound-generating particles on a vibration device, starting the vibration device, and loosening the smoke-generating particles under the action of vibration; Vibrating equipment includes vibrating screens or vibrating tables; In step S6, the plurality of sections of the empty tube (3) and the filter (4) are first combined, and then cut into a plurality of sections of filter composites of appropriate lengths before the next step of filling is carried out.

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