Aerosol-generating article comprising sound-producing particles

Abstract

The utility model discloses an aerosol generating product containing sounding particles. The aerosol generating product comprises an outer pipe (1), and an aerosol generating matrix unit, a plugging piece (2), a hollow pipe fitting (3) and a filtering piece (4) which are positioned in the outer pipe (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 affected with damp, 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 utility model relates to the technical field of heat-not-burn cigarettes, and particularly relates to an aerosol generating article containing sound generating particles. BACKGROUND

[0002] With the increasing emphasis of consumers on health issues and the increasing demand for personalized experiences of cigarette products, the tobacco industry has been continuously responding to the demand upgrade of consumers and developing various smoking products with reduced tar and harm. Among them, heat-not-burn cigarettes can provide a healthier smoking experience while meeting the sensory needs of consumers due to the different heating methods of cigarettes than traditional cigarette products.

[0003] In the field of aerosol generating articles, particulate aerosol generating articles have attracted much attention due to their unique particulate aerosol generating substrate. Through a specific preparation process, the aerosol generating particles are filled into the outer tube, so that the required aerosol can be generated when the user uses it. However, during the preparation and filling process, such products face some problems that need to be solved urgently.

[0004] Firstly, the smoke generating agent contained in the aerosol generating particles may exude during the preparation and storage process, causing the aerosol generating particles to agglomerate. In addition, if the environmental humidity is high, the aerosol generating particles are also prone to absorb moisture in the air, causing the particles to be damp inside. The particles after exuding or being damp are prone to agglomeration, which not only affects the dispersibility and fluidity of the particles, but also may cause the particles to be unevenly filled into the outer tube during the filling process, thereby affecting the quality of the final product and the user experience. In addition, the aerosol generating particles absorbing moisture in the air will also cause the aerosol generating particle smoke volume to decrease and the smoke temperature to increase.

[0005] Secondly, the crushing rate of the aerosol generating particles during the filling process is also a problem that needs attention. Since the particulate aerosol generating substrate is prone to extrusion and friction under external force during filling, if the strength and toughness of the particles are insufficient, the particles are prone to breakage during the filling process. This not only reduces the yield of the product, but also affects the taste and smoke quality of the final product.

[0006] Finally, during the storage and transportation of the aerosol generating particles, the smoke generating agent is prone to exude to the surface of the cigarette paper, forming yellow spots. This not only affects the aesthetics of the cigarette, but also may have an adverse effect on the smoking taste of the cigarette. In order to solve this problem, a separate barrier layer needs to be provided on the inner side of the cigarette paper, which undoubtedly increases the production cost and process complexity. In addition, during the storage and transportation of the aerosol generating particles, the internal active ingredients (such as smoke generating agents, aroma components, etc.) may also volatilize and lose, resulting in a short shelf life and a decrease in quality when filled into the aerosol generating article.

[0007] Therefore, it is of great significance to develop a preparation method capable of effectively solving the problems of moisture absorption and caking of aerosol generating particles, reducing the breakage rate during filling, and effectively preventing the exosmosis of the smoking agent, for improving the quality and user experience of the particulate aerosol generating article. This is also one of the technical problems to be solved in the field of aerosol generating articles.

[0008] In addition, the existing technology usually directly adds flavoring agents during the preparation of the smoking core material unit of the aerosol generating article. During the smoking process, the added flavoring agents are rapidly released due to the high temperature of the smoking core material unit, resulting in a strong aroma in the early stage of smoking and a weak aroma in the later stage of smoking. Moreover, the flavoring method is single.

[0009] In addition to the above problems, the particulate aerosol generating article also faces the problem of difficult positioning of the blocking member and the filter member in terms of structure. Since the bulk aerosol generating particles cannot be fixed, they must be filled into the outer tube by filling, and the aerosol generating particle section needs to be fixed by the way of sealing paper and blocking member on both sides. In order to converge aerosol and increase the amount of smoke, the downstream of the blocking member is usually a cavity (cavity section) defined by the outer tube, and the downstream of the cavity section is the filter section. The current preparation method for the above aerosol generating article is filling, and the production process sequence is as follows: sealing one end of the tube, then sequentially filling the aerosol generating substrate, the blocking member and the filter member from the other end, reserving the cavity distance between the blocking member and the filter member when filling the filter member, and the outer surfaces of the blocking member and the filter member are not glued to the inner wall of the paper tube, but are fixed by friction with the inner wall of the paper tube after being directly filled into the fixed position. The problem of the above filling preparation method is: 1. The tube is vertically placed during filling, and the positions of the blocking member and the filter member on both sides of the cavity are difficult to position, and the axial length of the cavity section of different samples is likely to be inconsistent; 2. The outer surfaces of the blocking member and the filter member are only fixed by friction with the inner wall of the paper tube, and the blocking member and the filter member are likely to shift to the cavity section during transportation.

[0010] In order to solve the above problems, some cigarettes in the field will fill a paper tube into the cavity section in order to position the blocking member and the filter member, but the filling of the paper tube still has a new dilemma, that is, in order to better converge the smoke 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 passage of the blocking member, thereby increasing the resistance and trapping the smoke, resulting in a decrease in the quality of smoking. However, if the wall thickness of the paper tube is too thin, it will be difficult for the equipment for sucking the paper tube to stably suck the paper tube during the filling process, and the rejection rate during the filling process is relatively high. The stamping equipment used for filling cannot fill the thin-walled hollow tube. Therefore, this dilemma results in that although this scheme is feasible in principle, there are still many problems in implementation. In addition, the paper tube and the filter member are separately filled in this method, and the production efficiency is low.

[0011] In addition, the outer diameter of the paper tube filled into the cavity section and the inner diameter of the outer tube are difficult to match. 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 when filling the paper tube, and a slight deviation may cause the paper tube to not be filled into the outer tube or the outer tube to be broken. However, if the outer diameter of the paper tube is much smaller than the inner diameter of the outer tube, although it is beneficial to filling alignment, the paper tube filled into the cavity will move radially due to its outer diameter being much smaller than the diameter of the cavity, which causes the axial center of the paper tube to not correspond to the axial center of the cigarette. Therefore, how to simply realize the positioning of the blocking section and the filtering section still has many difficulties to be solved.

[0012] To solve the above problems, the utility model provides. Utility model content

[0013] The utility model discloses a sound-emitting particle is mixed in the particle type aerosol generating substrate unit, and the sound-emitting particle is added with high-pressure carbon dioxide gas in the preparation process. When the sound-emitting particle is heated or damp, the sound-emitting particle breaks and produces a crackling sound, increasing the interest of smoking. In addition, the sound-emitting particle includes a flavoring substance, and the breaking of the sound-emitting particle also slowly releases the flavoring substance, thereby achieving the effect of slowly releasing and flavoring the aerosol.

[0014] In addition, the aerosol generating particle with the coating layer has a core-shell structure, the core is the aerosol generating particle body, and the shell is the coating layer covering the aerosol generating particle body. The utility model coats the surface of the aerosol generating particle. The coating layer on the surface of the aerosol generating particle can avoid the problem of agglomeration during the placement of the aerosol generating particle, improve the flowability during the canning of the aerosol generating particle, and reduce the breakage rate of the particle during the filling to a certain extent. In addition, the aerosol generated by the heating of the aerosol generating particle body can still smoothly pass through the coating layer and be gradually released, without affecting the smoke yield of the aerosol generating particle body itself.

[0015] In the structure of the aerosol generating product, due to the limiting of the hollow tube 3, the blocking piece and the filtering piece can be well positioned in the outer tube even without being bonded by the bonding agent and the outer tube. In the preparation method, the hollow tube and the filtering piece are first compounded and cut into appropriate lengths, and then filled. During the filling, the suction equipment sucks one end of the filtering piece in the filtering composite, and the filling is completed at one time without the need to suck the hollow tube again. The thin-walled hollow tube as a supporting piece will not affect the suction resistance of the cigarette and will not increase the interception of smoke. Even if the outer diameter of the hollow tube is smaller than the inner diameter of the outer tube, the filtering composite is long enough and the friction is large enough, so the hollow tube is still fixed in the outer tube and will not shift.

[0016] The utility model discloses a first aspect provides a kind of aerosol-generating article containing sound-emitting particle, it includes outer tube 1, and the aerosol-generating substrate unit, obturator 2, empty pipe piece 3 and filter piece 4 located in the outer tube 1;

[0017] The empty pipe piece 3 and the filter piece 4 are wrapped by forming paper 5 complex;

[0018] The aerosol-generating substrate unit upstream also has sealing element 6;

[0019] The aerosol-generating substrate unit includes aerosol-generating particle 7 and sound-emitting particle 8;

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

[0021] The sound-emitting particle 8 is core-shell structure, and its core is sound-emitting particle body, and its shell is the coating layer 72 coated on the outer surface of the sound-emitting particle body.Just, sound-emitting particle and aerosol-generating particle structure are basically similar, and both are body coated coating layer.

[0022] Preferably, the material of the coating layer 72 includes but is not limited to ethyl cellulose, shellac, Brazil palm 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 aerosol-generating particle 7 and sound-emitting particle 8 is 5:1-20:1;The size number of the aerosol-generating particle 7 and the size number of the sound-emitting particle 8 are in the consistent range.

[0025] Preferably, the empty pipe piece 3 is selected from but not limited to paper tube, non-woven fabric tube or acetic acid fiber bundle tube.

[0026] The forming paper 5 contains flavoring substance and / or smoking substance.The flavoring substance includes menthol, ionone, ethyl maltol, vanillin, rose net oil essence flavor or tobacco extract or nicotine salt.The smoking substance includes one or more of glycerol or propylene glycol.

[0027] The forming paper 5 contains porous material, and the porous material has flavoring substance and / or smoking substance adsorbed in it;

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

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

[0030] Preferably, the activated carbon is located on the side of the forming paper 5 close to the integrated outer tube 1, and the activated carbon adsorbs flavoring substances. During production, the forming paper with the porous material (activated carbon) can directly adsorb the flavoring substances, or the activated carbon adsorbs the flavoring substances and is then added to the forming paper. The flavoring substances can also be replaced by smoke-producing substances and the like.

[0031] That is, the forming paper 5 can directly adsorb flavoring substances and / or smoke-producing substances, preferably, the forming paper first carries the porous material, and then the porous material adsorbs the flavoring substances and / or smoke-producing substances. More preferably, the porous material is activated carbon.

[0032] The activated carbon in the forming paper 5 is a porous material, which can adsorb flavoring substances, and the flavoring method of adsorbing flavoring substances expands the selection range and form of flavoring substances, and is not limited to only flavoring by burst beads, but any flavoring substance that can be adsorbed into the porous material. 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 smoking process. This form of flavoring can achieve slow release of flavoring substances and ensure the consistency of the aroma quality before and after smoking. Further, on this basis, flavoring substances and smoke-producing substances can also be added to the forming paper at the same time, and the smoke-producing substances in the forming paper in the filter segment can supplement the smoke volume in the later stage of smoking.

[0033] Further, the activated carbon in the forming paper 5 is close to one side of the integrated outer tube 1. The advantage of this arrangement is that, on the one hand, the activated carbon can reduce the friction on the outside of the forming paper, so that the filter composite formed by the hollow tube 3 and the filter 4 wrapped by the forming paper 5 is easier to fill into the outer tube 1. At this time, although the activated carbon can reduce the friction on the outside of the forming paper, since the filter composite of the present application is long enough and has a large contact area with the outer tube after being wrapped by the forming paper, the friction provided by the contact area 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 can make the forming paper 5 have a certain black color. By arranging the activated carbon on one side of the forming paper 5, the two sides of the forming paper can be distinguished by color. When the filter composite is formed by wrapping the hollow tube 3 and the filter 4 with the forming paper 5, the side without activated carbon is close to the hollow tube 3 and the filter 4. This ensures that the activated carbon with flavoring substances is close to the integrated outer tube 1. In order to facilitate filling, the outer diameter of the filter composite after the hollow tube 3 and the filter 4 are wrapped by the forming paper 5 is 0.1-0.35mm smaller than the inner diameter of the outer tube 1. Therefore, after filling, there will be a small gap between the outside of the forming paper and the inside of the integrated outer tube 1. This gap may allow smoke to pass through, but the activated carbon with flavoring substances on the outside can supplement the flavor of the passing smoke, and the flavoring material on the inner wall or center of the hollow tube 3 can supplement the flavor of the smoke flowing through the center. This double supplementation ensures that the flavor of the smoke can be supplemented at every point.

[0034] Preferably, the outer diameter of the filter composite after the hollow tube 3 and the filter 4 are wrapped by the forming paper 5 is 0.1-0.35mm smaller than the inner diameter of the outer tube 1. The smaller outer diameter of the filter composite makes it easier to fill into the outer tube, and after filling, there will be a small gap between the outside of the forming paper and the inside of the integrated outer tube 1. This gap may allow smoke to pass through, but since the filter composite of the present application is long enough and has a large contact area with the outer tube after being wrapped by the forming paper, the friction provided by the contact area is sufficient to ensure the fixation of the filter composite, so even if there is this small gap, the filter composite is still fixed in the outer tube and will not shift, so the filter composite will not fall out of the outer tube.

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

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

[0037] Preferably, the hollow tube 3 further comprises a functional material; and / or

[0038] The inner wall of the hollow tube 3 or the tube wall of the hollow tube 3 further comprises a flavoring and cooling layer, which is a high polymer or a flavoring coating. These high polymers or flavoring coatings are selected from those materials that do not produce plastic odor at high temperature, such as biological wax, natural biological polymers such as alginic acid, gelatin, biological polysaccharide substances, etc. The functional material can be any form of substance with the function of cooling and flavoring in the prior art.

[0039] Preferably, the filter 4 comprises, but is not limited to, an acetate tow rod, a polyethylene terephthalate tow rod, or a hollow acetate tow rod. Alternatively, the filter rod in the art has the function of a burst bead.

[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 hollow tube 3 can also have a ventilation hole penetrating the outer tube 1, the forming paper 5 and the tube wall of the hollow tube 3.

[0042] The second aspect of the utility model provides a preparation method of an aerosol generating article containing sound-producing particles, which comprises the following steps:

[0043] S1, preparing an 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 does not make any limitation. During the preparation of the aerosol generating particle body, a smoking agent, a flavoring essence, etc. are added, or a smoking agent, a flavoring essence, etc. are separately adsorbed after the preparation of the aerosol generating particle body is completed, and then the next coating is carried out after drying after adsorption is completed.

[0044] S2, preparing a coating material mixture;

[0045] S3, placing the aerosol generating particle body obtained in step S1 into a coating device, and uniformly attaching the coating material mixture obtained in step S2 to the surface of the aerosol generating particle body by spraying, so as to form a continuous, dense and durable coating film; after coating is completed, the aerosol generating particle body with the coating material is dried to make the coating layer solidify and tightly adhere to the aerosol generating particle body, and an aerosol generating particle 7 with a coating layer is obtained. This step helps to improve the stability and durability of the coating layer.

[0046] S4, preparing a sound-producing particle body;

[0047] S5, placing the sound-producing particle body obtained in step S4 into a coating device, and spraying the coating material mixture obtained in step S2 to make the coating material mixture evenly adhere to the surface of the sound-producing particle body; after the coating is completed, drying treatment is performed on the sound-producing particle body with the coating material, so that the coating layer is solidified and tightly adhered to the sound-producing particle body, thereby obtaining the sound-producing particle 8 with the coating layer;

[0048] S6, wrapping the hollow tube 3 and the filter 4 with the forming paper 5 to form a filter composite; mixing the aerosol generating particle obtained in step S3 and the sound-producing particle obtained in step S5 in a certain proportion to obtain aerosol generating substrate unit mixed particles, and then filling the mixed particles into the outer tube 1, the blocking piece 2, and the filter composite, wherein the hollow tube 3 in the filter composite is close to the blocking piece 2, and then setting the sealing piece 6, thereby obtaining an aerosol generating article containing sound-producing particles.

[0049] Preferably, in step S2, the method for preparing the coating material is as follows: the coating material body is added into a solvent and stirred to prepare a coating material mixture with a mass concentration of 4-15%.

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

[0051] Preferably, in step S3, the coating process is performed with stirring during spraying, and the stirring time is 10-20 minutes.

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

[0053] Preferably, in step S4, the sound-producing particle body is prepared by the following steps:

[0054] S41, mixing and heating

[0055] The sugar syrup and the flavoring substance are mixed uniformly, and then dissolved in a small amount of water (generally less than 4% of the total amount of raw materials), and the mixture is placed in a sealed container and heated to about 150°C; during the heating process, the inside of the container needs to be partially vacuumed to reduce the moisture and prevent the generation of bubbles.

[0056] S42, adding high-pressure gas

[0057] When the mixture is heated to the appropriate temperature, the high-pressure carbon dioxide gas is injected; the pressure of the carbon dioxide gas is usually 600 pounds per square inch or higher. Under high pressure, the carbon dioxide gas dissolves and coats the raw materials, forming a large number of tiny bubbles. This mixing process usually lasts 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 sugar syrup is cooled, and the cooling is carried out under high pressure, so that the carbon dioxide bubbles are stably coated in the sugar syrup, and the tiny bubbles converge to form large bubbles with a diameter of about 225 microns. After cooling is completed, the pressure in the container is released, at which time, due to the sudden decrease in pressure, the sugar lump will naturally collapse and break into many small pieces, which are the sound-emitting particle bodies, and these sound-emitting particle bodies still contain many fine carbon dioxide bubbles.

[0060] S44, processing and packaging

[0061] The broken sound-emitting particle bodies are screened and processed to ensure their size and shape; after processing, the sound-emitting particle bodies are packaged and sealed for use.

[0062] Preferably, in step S41, the flavoring substances include essential oils and / or porous materials adsorbed with essential oils; the porous materials include activated carbon, ceramic molecular sieve type inorganic materials, or polymer type organic materials, or plant natural porous materials.

[0063] The boiling point of the essential oils is higher than the dissolution temperature of the sugar syrup, and the boiling point of the essential oils is usually higher than 200°C. This is to ensure that the essential oils are volatilized to flavor the aerosol after the sugar syrup is dissolved and then heated.

[0064] Preferably, between step S5 and step S6, there is also a sizing process, specifically: placing the smoking particles on a vibrating device and starting the vibrating device to make the smoking particles loose under the action of vibration. The purpose of the sizing process is: 1. To help disperse the smoking particles and ensure good flowability of the smoking particles during the filling process, so that they can be uniformly and continuously filled into the cigarette. 2. To remove impurities and lumps. Sizing is an important link in the cigarette manufacturing process, which directly affects the quality and taste of the cigarette.

[0065] Preferably, the vibrating device includes a vibrating screen or a vibrating table.

[0066] Preferably, in step S6, the empty tube 3 and the filter 4 are first compounded into multiple sections, and then cut into multiple filter compound sections of appropriate length before the next step of filling.

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

[0068] The plugging member 2 in the utility model includes but is not limited to an integrally formed high-molecular material rod with an axial airflow channel, and as long as the plugging member 2 can plug the aerosol generating substrate 6 and prevent it from moving into the downstream empty tube member 3 in the field.

[0069] Compared with the prior art, the utility model has the following beneficial effects:

[0070] In the first aspect, the utility model mixes sound-producing particles in the granular aerosol generating substrate unit:

[0071] 1、The utility model mixes sound-producing particles in the granular aerosol generating substrate unit, and high-pressure carbon dioxide gas is added to the sound-producing particles during preparation. These gases are coated in syrup to form a large number of tiny bubbles. During the suction process, when the sound-producing particles are heated or get wet, the syrup starts to dissolve, which makes the outer wall of the small space encapsulating the small bubbles weak. With further dissolution of the syrup, the carbon dioxide bubbles are released, pushing the sound-producing particles to crack. In addition, the carbon dioxide gas expands rapidly after being heated, increasing in volume. This expansion force generates a pushing force that pushes the syrup to release outward and produces a crackling sound, increasing the interest of the suction. The cracking of the bubbles also creates the illusion of jumping in the aerosol generating article. In addition, the sound-producing particles contain flavoring substances, and the cracking of the sound-producing particles also slowly releases the flavoring substances, thereby achieving the effect of slow-release flavoring of the aerosol.

[0072] 2、The flavoring substances in the sound-producing particles include essential oils and / or porous materials adsorbed with essential oils, and the porous materials include activated carbon, ceramic molecular sieve inorganic materials, or polymer organic materials, or plant natural porous materials. Since the flavoring substances are adsorbed inside the porous materials, the flavoring substances in the porous materials are also slowly released during the suction process. This form of flavoring can achieve slow release of flavoring substances and ensure consistency of the aroma quality before and after suction.

[0073] 3、The sound generating particles are coated with a coating layer on the surface, the coating layer on the surface can effectively prevent the passage of moisture in the air, isolate the sound generating particle body inside from the outside world, effectively reduce its hygroscopicity and prevent the essential oil and flavor in the sound generating particle body from exuding to the surface of the particle, thereby avoiding the problem of caking of the sound generating particles during storage and improving the flowability of the sound generating particles during canning. Coating the surface of the sound generating particles can reduce the breakage rate of the particles during filling to a certain extent. The coating layer can play a protective role, reducing the breakage of the particles during filling due to external force extrusion and friction. In addition, the coating can also improve the flowability and uniformity of the particles, so that the particles can flow more smoothly during filling, and further reduce the breakage caused by the mutual impact between the particles. The coating layer on the surface of the sound generating particles can prevent the essential oil and flavor in the sound generating particle body from exuding to the surface of the sound generating particles, and also avoid the problem of yellow spots caused by the exudation of essential oil and flavor to the cigarette paper, without the need to separately set a barrier layer on the cigarette paper, reducing the requirements of the cigarette paper. The coating layer on the surface of the sound generating particles can also lock the essential oil and flavor inside the sound generating particles, avoiding the volatilization and loss of the internal components of the sound generating particles during storage.

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

[0075] 4、The aerosol generating particles are coated on the surface, the coating layer on the surface of the aerosol generating particles can effectively prevent the passage of moisture in the air, isolate the aerosol generating particle body inside from the outside world, effectively reduce its hygroscopicity and prevent the smoke agent (only take smoke agent as an example, also including essential oil, etc.) in the aerosol generating particle body from exuding to the surface of the particle, thereby avoiding the problem of caking of the aerosol generating particles during storage and improving the flowability of the aerosol generating particles during canning. It has been verified that after the aerosol generating particles are coated by the method of the utility model, they are placed in a temperature of 25℃ and a humidity of 60% for 15 days, and no caking occurs, and the flowability is still good, while the aerosol generating particles without coating have obvious caking phenomenon. In addition, the aerosol generating particles avoid absorbing moisture in the air, and also avoid the problems of smoke volume reduction and smoke temperature increase.

[0076] 5、Coating the surface of the aerosol generating particles can reduce the breakage rate of the particles during filling to a certain extent. The coating layer can play a protective role, reducing the breakage of the particles during filling due to external force extrusion and friction. In addition, the coating can also improve the flowability and uniformity of the particles, so that the particles can flow more smoothly during filling, and further reduce the breakage caused by the mutual impact between the particles.

[0077] 6、The coating layer on the surface of the aerosol generating particle can prevent the smoke generating agent inside the aerosol generating particle body from exuding to the surface of the aerosol generating particle, and also avoids the problem of yellow spots caused by the exudation of the smoke generating agent to the cigarette paper, without the need to additionally set a barrier layer on the cigarette paper, thereby reducing the requirements for the cigarette paper.

[0078] 7、The coating layer on the surface of the aerosol generating particle can also lock the internal components (such as smoke generating agents and aroma components) of the aerosol generating particle, thereby avoiding the volatilization and loss of the internal components of the aerosol generating particle during storage.

[0079] 8、The coating material is ethyl cellulose, and the coating layer formed by the material can not only effectively prevent the passage of moisture, but also has certain air permeability, so that after the aerosol generating particle body generates aerosol, the aerosol can still smoothly pass through the coating layer and gradually release, without affecting the smoke generating amount of the aerosol generating particle body itself.

[0080] 9、The thickness of the coating layer and the preparation conditions in the coating process ensure the uniformity of the coating layer, and the thickness and uniformity of the coating layer also greatly affect the volatilization rate. If the coating layer is too thick or uneven, it may hinder the release of volatile substances. However, appropriate thickness and uniformity of the coating layer can ensure that the volatile substances can smoothly pass through the coating layer when heated.

[0081] In a third aspect, the hollow pipe 3 and the filter 4 are first wrapped by the forming paper 5 to form a filter composite:

[0082] 10、In the aerosol generating product, due to the limiting of the hollow pipe, the blocking piece and the filter can be well positioned in the outer pipe even without the adhesion of the adhesion agent and the outer pipe.

[0083] 11、In the aerosol generating product, due to the sufficient length and large friction force of the filter composite, the filter composite is still fixed in the outer pipe and will not be displaced, so that the filter composite will not fall out of the outer pipe.

[0084] 12、In the preparation method, the hollow pipe and the filter are first compounded, then cut into appropriate lengths, and then filled. When filling, the suction equipment sucks the filter at one end of the filter composite, without the need to suck the hollow pipe, so that the pipe wall of the hollow pipe can be as thin as possible under the condition of reducing the suction resistance and trapping smoke, and the thin-walled hollow pipe as a supporting piece will not affect the suction resistance of the cigarette and will not increase the trapping of smoke. The pipe wall of the hollow pipe of the aerosol generating product can reach 0.1-0.6 mm. The filter has a larger contact area with the suction equipment and is more easily sucked and held stably.

[0085] 13. The preparation method, since the suction equipment sucks the filter assembly during filling, the filling is completed at one time, the empty pipe assembly does not need to be sucked separately, and the empty pipe assembly and the filter assembly are filled twice, efficiency is improved.

[0086] 14. The outer diameter of the empty pipe assembly is smaller than the inner diameter of the outer pipe, since the empty pipe assembly is combined with the filter assembly, even if the outer diameter of the empty pipe assembly is smaller than the inner diameter of the outer pipe, the empty pipe assembly is fixed in the outer pipe and cannot be displaced, so that the axial center of the empty pipe assembly corresponds to the axial center of the cigarette.

[0087] 15. The forming paper 5 contains activated carbon, the activated carbon is a porous material, can adsorb flavoring substances, the flavoring method of the adsorbed flavoring substances expands the selection range and form of the flavoring substances, is not limited to only flavoring through the burst bead, as long as the flavoring substances that can be adsorbed into the porous material 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, the slow release of the flavoring substances can realize the consistency of the aroma quality before and after the suction. Further, on this basis, flavoring substances and smoke generating substances can also be added into the forming paper at the same time, the smoke generating substances in the forming paper in the filter segment can supplement the smoke amount in the later stage of the suction.

[0088] Further, the activated carbon in the forming paper 5 is arranged close to one side of the integrated outer tube 1, which has the advantages that, on the one hand, the activated carbon can reduce the friction on the outer side of the forming paper, so that the filter composite formed by the hollow tube 3 and the filter 4 wrapped by the forming paper 5 can be more easily filled into the outer tube 1. At this time, although the activated carbon can reduce the friction on the outer side of the forming paper, since the filter composite is long enough and has a large contact area with the outer tube after being wrapped by the forming paper, the friction provided by the filter composite 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 can make the forming paper 5 have a certain black color, and by arranging the activated carbon on one side of the forming paper 5, the two sides of the forming paper can be distinguished by color. When the filter composite is formed by wrapping the hollow tube 3 and the filter 4 with the forming paper 5, the side without activated carbon is close to the hollow tube 3 and the filter 4, which ensures that the activated carbon with flavoring substances is close to the integrated outer tube 1. In order to facilitate filling, the outer diameter of the filter composite after the hollow tube 3 and the filter 4 are wrapped by the forming paper 5 is 0.1-0.35mm smaller than the inner diameter of the outer tube 1, so there is a slight gap between the outer side of the forming paper and the inner side of the integrated outer tube 1 after filling. The gap can allow smoke to pass through, and the activated carbon with flavoring substances on the outer side can supplement the smoke passing through with flavor, and the flavoring material on the inner wall or center of the hollow tube 3 can supplement the smoke passing through the center with flavor, so that the smoke at each position can be supplemented with flavor in a double way. BRIEF DESCRIPTION OF DRAWINGS

[0089] Figure 1 Structure diagram of aerosol generating article containing sound-producing particles.

[0090] Figure 2 Structure diagram of aerosol generating particles with coating layer (the structure diagram of sound-producing particles is omitted as it is similar to that of aerosol generating particles).

[0091] Corresponding names of reference signs are: 1-outer tube, 2-plugging member, 3-hollow tube, 4-filter, 5-forming paper, 6-sealing member, 7-aerosol generating particle, 8-sound-producing particle, 71-aerosol generating particle body, 72-coating layer. DETAILED DESCRIPTION

[0092] The utility model will be described in further detail below in combination with embodiments.

[0093] Those skilled in the art will understand that the following examples are only used to illustrate the present application, and should not be regarded as limiting the scope of the present application. If the specific technology or condition is not specified in the examples, it is carried out according to the technology or condition described in the literature in the art or according to the product manual. If the manufacturer of the material or equipment is not specified, it is a conventional product that can be obtained by purchase.

[0094] Those skilled in the art will understand that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be further understood that the term "comprising" as used in the specification herein is used to mean that the features, integers, steps, operations, elements, and / or components that follow the term are included in the application, but not to the exclusion of addition or one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is "connected to" another element, it can be directly connected to the other element, or there can be intervening elements. In addition, "connected" as used herein can include wireless connections.

[0095] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more. The orientation or state relationship indicated by the terms "inner", "upper", "lower", and the like is based on the orientation or state relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0096] In the description of the present application, it should be noted that, unless otherwise specifically stated and limited, the terms "mounting", "connection", "provided with" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application should be understood according to the specific circumstances.

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

[0098] Example 1

[0099] As Figure 1As shown, this embodiment provides an aerosol-generating product containing sound-emitting 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 inside the outer tube 1;

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

[0101] There is also a sealing member 6 upstream of the aerosol generating substrate unit;

[0102] The aerosol generating matrix unit includes 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 is the coating layer 72 covering the outer surface of the aerosol-generating particle body;

[0104] The sound-generating particle 8 has a core-shell structure, where the core is the particle body and the shell is the coating layer 72 covering the outer surface of the particle body. In other words, the structure of the sound-generating particle is 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 shaping paper 5 contains activated carbon, the amount of the activated carbon added is 10 g / m2, and the mesh size 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 flavoring substances are adsorbed in the activated carbon.

[0111] The activated carbon in the plug wrap 5 is a porous material, which can adsorb flavoring substances. The flavoring method of adsorbing flavoring substances expands the selection range and form of flavoring substances, and is not limited to flavoring only by a burst bead. 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 smoking process. This form of flavoring can achieve slow release of flavoring substances and ensure the consistency of aroma quality before and after smoking. Further, on this basis, flavoring substances and smoke generating substances can also be added to the plug wrap at the same time. The smoke generating substances in the plug wrap in the filter segment can supplement the smoke amount in the later stage of smoking.

[0112] Further, the activated carbon in the plug wrap 5 is close to one side of the integrated outer tube 1. The advantages of this arrangement are as follows. On the one hand, the activated carbon can reduce the friction on the outer side of the plug wrap, so that the empty tube piece 3 and the filter piece 4 wrapped by the plug wrap 5 are more easily filled into the outer tube 1. At this time, although the activated carbon can reduce the friction on the outer side of the plug wrap, since the filter composite piece of the utility model is long enough and has a large contact area with the outer tube after being wrapped by the plug wrap, the friction provided by the filter composite piece is sufficient to ensure the fixation of the filter composite piece, so the filter composite piece will not fall out of the outer tube. On the other hand, the activated carbon can make the plug wrap 5 have a certain black color. By arranging the activated carbon on one side of the plug wrap 5, the two surfaces of the plug wrap can be distinguished by color. When the empty tube piece 3 and the filter piece 4 are wrapped by the plug wrap 5 to form a filter composite piece, the side without activated carbon is close to the empty tube piece 3 and the filter piece 4. This ensures that the activated carbon with flavoring substances is close to the integrated outer tube 1. In order to facilitate filling, the outer diameter of the filter composite piece after being wrapped by the plug wrap 5 is less than the inner diameter of the outer tube 1 by 0.15 mm. Therefore, after filling, there is a slight gap between the outer side of the plug wrap and the inner side of the integrated outer tube 1. The gap can allow smoke to pass through, and the activated carbon with flavoring substances on the outer side can supplement the aroma of the passing smoke. The flavoring material in the inner wall or center of the empty tube piece 3 can supplement the aroma of the smoke flowing through the center. In this way, double supplementation is achieved to ensure that the smoke at each position can be supplemented with aroma.

[0113] The outer diameter of the filter composite after the hollow pipe 3 and the filter 4 are wrapped by the formed paper 5 is less than the inner diameter of the outer pipe 1 by 0.15mm, so that the filter composite is easier to be filled into the outer pipe, and a slight gap exists between the outside of the formed paper and the inside of the integrated outer pipe 1 after filling, which may allow smoke to pass through, but since the filter composite is long enough and the contact area between the composite and the outer pipe is large after being wrapped by the formed paper, the friction provided is enough to ensure the fixation of the filter composite, so that the filter composite is fixed in the outer pipe and will not be displaced, so that the filter composite will not fall out of the outer pipe.

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

[0115] Preferably, the hollow pipe 3 further comprises a functional material; and / or

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

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

[0118] The plugging member 2 in the utility model is an integrally formed polymer material rod with an axial airflow passage.

[0119] The embodiment comprises a preparation method of an aerosol generating article containing sound-producing particles, which comprises the following steps:

[0120] S1, preparing an aerosol generating particle body 71;

[0121] S2, preparing a coating material mixture;

[0122] S3, placing the aerosol generating particle body obtained in step S1 into a coating device, and spraying the coating material mixture obtained in step S2 so that the coating material mixture is uniformly 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 with the coating material is dried to solidify the coating layer and tightly attach the coating layer to the aerosol generating particle body, thereby obtaining the aerosol generating particle 7 with the coating layer. This step helps to improve the stability and durability of the coating layer.

[0123] S4, preparing a sound-producing particle body;

[0124] S5, placing the sound-producing particle body obtained in step S4 into a coating device, and spraying the coating material mixture obtained in step S2 to make the coating material mixture evenly adhere to the surface of the sound-producing particle body; after the coating is completed, drying treatment is performed on the sound-producing particle body with the coating material, so that the coating layer is solidified and tightly adhered to the sound-producing particle body, thereby obtaining the sound-producing particle 8 with the coating layer;

[0125] S6, wrapping the hollow tube 3 and the filter 4 with the forming paper 5 to form a filter composite; mixing the aerosol generating particle obtained in step S3 and the sound-producing particle obtained in step S5 in a certain proportion to obtain aerosol generating substrate unit mixed particles, and then filling the mixed particles, the blocking piece 2, and the filter composite into the outer tube 1, wherein the hollow tube 3 in the filter composite is close to the blocking piece 2, and then setting the sealing piece 6, thereby obtaining an aerosol generating article containing sound-producing particles.

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

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

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

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

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

[0131] S41, mixing and heating

[0132] The sugar syrup and the flavoring substance are uniformly mixed and then dissolved in a small amount of water (generally less than 4% of the total amount of raw materials), and the mixture is placed in a sealed container and heated to about 150°C; during the heating process, the inside of the container needs to be partially vacuumed to reduce the moisture and prevent the generation of bubbles.

[0133] S42, adding high-pressure gas

[0134] When the mixture is heated to the appropriate temperature, high-pressure carbon dioxide gas is injected; the pressure of the carbon dioxide gas is usually 600 pounds per square inch or higher. Under high pressure, the carbon dioxide gas dissolves and coats the raw materials, forming a large number of tiny bubbles. This mixing process usually lasts 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 sugar syrup is cooled, and the cooling is carried out under high pressure, so that the carbon dioxide bubbles are stably coated in the sugar syrup, and the tiny bubbles converge to form large bubbles with a diameter of about 225 microns. After cooling is completed, the pressure in the container is released, at which time, due to the sudden decrease in pressure, the sugar lump will naturally collapse and break into many small pieces, which are the sound-emitting particle bodies, and these sound-emitting particle bodies still contain many fine carbon dioxide bubbles.

[0137] S44, processing and packaging

[0138] The broken sound-emitting particle bodies are screened and processed to ensure their size and shape; after processing, the sound-emitting particle bodies are packaged and sealed for use.

[0139] In step S41, the flavoring substance includes a porous material adsorbed with a flavoring agent; the porous material includes activated carbon.

[0140] The boiling point of the flavoring agent is higher than the dissolution temperature of the sugar syrup, and usually the boiling point of the flavoring agent is higher than 200°C. This is to ensure that the flavoring agent is volatilized to scent the aerosol after the sugar syrup is dissolved and then heated.

[0141] Between step S5 and step S6, there is also a granulating process, which is: placing the smoking particles on a vibrating device and starting the vibrating device to make the smoking particles loose under the action of vibration. The role of the granulating process is: 1. It helps to disperse the smoking particles and ensures that the smoking particles have good flowability during the filling process, so that they can be uniformly and continuously filled into the cigarette. 2. Remove impurities and lumps. Granulation is an important link in the process of cigarette manufacturing, which directly affects the quality and taste of the cigarette.

[0142] The vibrating device includes a vibrating screen.

[0143] In step S6, the empty pipe piece 3 and the filter piece 4 are first compounded, and then cut into a plurality of filter compound pieces of appropriate length before the next step of filling.

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

[0145] It was confirmed that after the coating by the method of the present example, the aerosol generating particles did not agglomerate and the flowability was still good after being left at a temperature of 25℃ and a humidity of 60% for 15 days, whereas the aerosol generating particles that were not coated showed a significant agglomeration phenomenon.

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 matrix unit comprises aerosol generating particles (7) and sound-generating particles (8); The aerosol-generating particle (7) has a core-shell structure, wherein the core is the aerosol-generating particle body (71), and the shell is the coating layer (72) covering 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, wherein The materials of the coating layer (72) include 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. The aerosol-generating article comprising sound-emitting particles according to claim 1, wherein 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. The aerosol-generating article comprising sound-emitting particles according to claim 1, wherein The empty tube (3) is a paper tube, a non-woven fabric tube or an acetate fiber bundle tube.

5. The aerosol-generating article comprising sound-emitting particles according to claim 1 , wherein The plug wrap (5) contains flavoring substances and / or smoke-generating substances.

6. An aerosol-generating article comprising sound-emitting particles according to claim 1, wherein The shaping paper (5) contains a porous material, and the porous material has flavoring substances and / or smoke-generating substances adsorbed therein; the porous material includes activated carbon, ceramic molecular sieve inorganic materials, or polymer organic materials, or natural plant porous materials.

7. An aerosol-generating article comprising sound-emitting particles according to claim 1, wherein The outer diameter of the filter composite after the hollow tube (3) and the filter (4) are wrapped and composited by the molding paper (5) is smaller than the inner diameter of the outer tube (1) by 0.1-0.35 mm.

8. The aerosol-generating article comprising sound-emitting particles according to claim 1, wherein The wall thickness of the hollow pipe (3) is 0.1-0.6 mm.

9. The aerosol-generating article comprising sound-emitting particles according to claim 1, wherein The empty tube (3) further contains functional materials, and / or the inner wall of the empty tube (3) or the tube wall of the empty tube (3) further contains a fragrance-enhancing and temperature-reducing layer, and the fragrance-enhancing and temperature-reducing layer is a high molecular polymer or a fragrance-enhancing coating.

10. An aerosol-generating article comprising sound-emitting particles according to claim 1, wherein The filter element (4) comprises an acetate fiber tow rod, a polyethylene terephthalate tow rod, or a hollow acetate fiber tow rod; The outer tube (1) is a paper tube or a non-woven fabric tube.

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