Aerosol generating product and aerosol generating system

Abstract

The embodiment of the invention provides an aerosol generating product and an aerosol generating system.The aerosol generating product comprises a medium part and a wrapping layer, the medium part at least comprises an aerosol generating substrate section, the aerosol generating substrate section is provided with an air passage hole, and the air passage hole at least penetrates through one end of the aerosol generating substrate section; the wrapping layer wraps at least part of the circumferential surface of the medium part in the length direction; the medium part and the wrapping layer are of an integrated structure. According to the aerosol generation product, the wrapping layer and the medium part form the integrated structure, on one hand, the wrapping layer and the medium part can be synchronously formed, and the aerosol generation consistency is improved; on the other hand, the internal structure of the medium part is more compact, the heat transfer performance of the medium part is improved, and the consistency of aerosol generation is improved; and meanwhile, the bonding strength between the wrapping layer and the medium part is also improved.

Description

Technical Field

[0001] The present invention relates to the technical field of smoking products, and in particular to an aerosol generating product and an aerosol generating system. Background Art

[0002] The heat-not-burn tobacco product is provided with an aerosol-generating substrate, which is heated to a temperature high enough to generate aerosol by atomization without combustion, and the aerosol is discharged from the aerosol-generating device for the user to inhale.

[0003] In the related art, the structure of the aerosol generating matrix is ​​loose and its internal heat transfer performance is poor. During the process of heating the aerosol generating matrix, the temperature difference between its various parts is large. Some aerosol generating matrices are denatured due to the high temperature, while some aerosol generating matrices cannot be atomized to generate aerosols due to the low temperature, which is not conducive to the user experience. Summary of the invention

[0004] In view of this, the embodiments of the present application hope to provide an aerosol generating product and an aerosol generating system capable of improving the heat transfer performance of an aerosol generating substrate.

[0005] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0006] An embodiment of the present invention provides an aerosol generating product, comprising:

[0007] The medium portion comprises at least an aerosol generating substrate segment, wherein the aerosol generating substrate segment is provided with an airway hole, and the airway hole at least penetrates one end of the aerosol generating substrate segment;

[0008] A wrapping layer, wrapping at least a portion of the circumferential surface of the dielectric portion along the length direction;

[0009] The medium portion and the wrapping layer are an integrated structure.

[0010] In some embodiments, a groove is provided on the circumferential surface of the medium portion, and the groove at least passes through one end of the medium portion, and the wrapping layer covers at least a portion of the groove to form an outer airway between the wrapping layer and the covered groove.

[0011] In some embodiments, the wrapping layer is wrapped around the circumferential surface of the aerosol-generating substrate segment, and the thermal conductivity of the material of the wrapping layer is greater than the thermal conductivity of the material of the aerosol-generating substrate segment.

[0012] In some embodiments, the wrapping layer is wrapped around the circumferential surface of the aerosol generating substrate segment, and the thermal conductivity of the material of the wrapping layer is not less than 0.15 W / m*k.

[0013] In some embodiments, the wrapping layer is wrapped around the circumferential surface of the aerosol generating substrate segment, and the material of the wrapping layer is a light absorbing material or a hydrophobic material.

[0014] In some embodiments, the wrapping layer completely wraps the entire circumferential surface of the medium portion; and / or the entire wrapping layer is made of the same material.

[0015] In some embodiments, the wrapping layer includes a first portion and a second portion, and the first portion and the second portion are made of different materials.

[0016] In some embodiments, both the first portion and the second portion are in a circular tubular shape surrounding the medium portion, and both are arranged along the length direction of the medium portion.

[0017] In some embodiments, the medium portion further includes a functional segment, and the functional segment is provided at at least one end of the aerosol generating substrate segment along the length direction, the first part is wrapped around the circumferential surface of the functional segment, and the second part is wrapped around the circumferential surface of the aerosol generating substrate segment.

[0018] In some embodiments, the medium portion further includes a functional segment, and the functional segment is provided at at least one end of the aerosol generating substrate segment along the length direction, and the wrapping layer at least wraps around the circumferential surface of the functional segment.

[0019] In some embodiments, the wrapping layer wraps the interface between the aerosol generating substrate segment and the functional segment.

[0020] In some embodiments, the functional segment is provided at the air outlet end of the aerosol generating matrix segment, and the material of the wrapping layer is a fragrance-carrying material for carrying fragrances; and / or, the material of the wrapping layer is an antibacterial material.

[0021] In some embodiments, the medium portion and the wrapping layer are an integrated structure formed by a co-extrusion process.

[0022] In some embodiments, the medium portion is a cylinder, the wrapping layer is a circular tubular structure, and the medium portion and the wrapping layer are coaxially arranged.

[0023] An embodiment of the present invention also provides an aerosol generating system, comprising an aerosol generating device and the aerosol generating product of any one of the aforementioned embodiments, wherein the aerosol generating device comprises a heating element, and the heating element is used to heat the aerosol generating substrate segment to generate an aerosol.

[0024] The aerosol generating product in the embodiment of the present invention forms an integrated structure with the wrapping layer and the medium part. On the one hand, the wrapping layer and the medium part can be formed synchronously, thereby improving the production efficiency of the aerosol generating product; on the other hand, the internal structure of the medium part is made denser, which is beneficial to improving the heat transfer performance of the medium part, so that the temperature of the medium part is more uniform during the heating process, and the consistency of aerosol generation is improved; at the same time, the problems of the thin sheet, filamentous component, and particle component falling off and difficult to clean in the thin sheet, filamentous component, or loose particle aerosol generating matrix in the prior art are solved. The denser internal structure of the wrapping layer is beneficial to improving the structural strength of the wrapping layer and enhancing the protective effect of the wrapping layer. The structure of the joint position between the wrapping layer and the medium part is denser, which improves the bonding strength between the wrapping layer and the medium part, and reduces the probability of the aerosol generating matrix segment being deformed by heat after heating and separating from the wrapping layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of an aerosol generating article in a first embodiment of the present invention at a first viewing angle;

[0026] Figure 2 for Figure 1 A schematic diagram of an aerosol generating article in a second viewing angle;

[0027] Figure 3 for Figure 1 A schematic diagram of an aerosol generating article in a third perspective;

[0028] Figure 4 is a schematic cross-sectional view of an aerosol generating article in a second embodiment of the present invention, wherein the dashed arrows indicate the flow direction of the airflow in the aerosol generating article;

[0029] Figure 5 is a schematic cross-sectional view of an aerosol generating article according to a third embodiment of the present invention;

[0030] Figure 6 is a schematic cross-sectional view of an aerosol generating article according to a fourth embodiment of the present invention;

[0031] Figure 7 is a schematic cross-sectional view of an aerosol generating article according to a fifth embodiment of the present invention;

[0032] Figure 8 is a schematic cross-sectional view of an aerosol generating article according to a sixth embodiment of the present invention;

[0033] Fig. 9 FIG. 4 is a schematic cross-sectional view of an aerosol generating article according to a seventh embodiment of the present invention.

[0034] Description of Reference Numerals

[0035] Medium portion 10; groove 10a; aerosol generating matrix segment 11; airway hole 11a; functional segment 12; wrapping layer 20; first portion 21; second portion 22 DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0037] In the description of this application, the "length direction" orientation or position relationship is based on the attached Figure 1 and Figure 4 Regarding the orientation or positional relationship shown, it should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] An embodiment of the present invention provides an aerosol generating product, which is used in an aerosol generating device to generate aerosol by heating without burning, so as to achieve the purpose of inhalation by a user.

[0039] See also Figures 1 to 3 The aerosol generating product includes a medium portion 10 and a wrapping layer 20 .

[0040] The medium portion 10 at least includes an aerosol generating substrate segment 11. The aerosol generating substrate segment 11 is composed of an aerosol generating substrate. The aerosol generating substrate generates aerosol after being heated to a certain temperature.

[0041] It is understandable that, in order to meet the user's inhalation purpose, air flow can enter the aerosol generating product from the outside.

[0042] The aerosol generating matrix segment 11 is provided with an airway hole 11a. The airflow entering the aerosol generating product from the outside enters the airway hole 11a. The aerosol generated after the aerosol generating matrix is ​​heated is gathered in the airway hole 11a. The airflow in the airway hole 11a can entrain the aerosol and finally flow out of the aerosol generating product for the user to inhale the aerosol.

[0043] It can be understood that the airway hole 11a is a hole in a macroscopic sense and can be identified by the naked eye.

[0044] By providing the airway hole 11a, it is possible to adjust the suction resistance and optimize the aerosol extraction efficiency.

[0045] The airway hole 11a extends through at least one end of the aerosol generating substrate segment 11. For example, see Figure 4For example, the airway hole 11a only penetrates one end of the aerosol generating substrate segment 11 close to the air inlet end of the aerosol generating product, and the other end is closed; for another example, the airway hole 11a only penetrates one end of the aerosol generating substrate segment 11 close to the air outlet end of the aerosol generating product, and the other end is closed; for another example, refer to Figure 6 The airway hole 11a penetrates both the air outlet end and the air inlet end of the aerosol generating matrix segment 11.

[0046] Understandably, see Figure 4 One end of the air inlet of the aerosol generating product is one end of the aerosol generating product along the length direction, and one end of the air outlet is the other end of the aerosol generating product along the length direction.

[0047] It can be understood that the airway hole 11a extends along the length direction.

[0048] The wrapping layer 20 wraps at least a portion of the circumferential surface of the medium portion 10 along the length direction. The wrapping layer 20 can protect the medium portion 10 to a certain extent, reduce the surface area of ​​the medium portion 10 directly exposed to the outside, thereby reducing the probability of the aerosol generating matrix segment 11 being exposed to the air and being damp and deteriorated, and at the same time, reducing the probability of the aerosol generating matrix segment 11 being exposed to other components in the aerosol generating device and causing contamination.

[0049] It is understandable that the material of the wrapping layer 20 is different from the material of the aerosol generating substrate segment 11 .

[0050] The medium portion 10 and the wrapping layer 20 are an integrated structure. That is, the medium portion 10 and the wrapping layer 20 are different parts of an integral structure. In this way, on the one hand, the relative position of the medium portion 10 and the wrapping layer 20 is fixed, which can reduce the probability of the medium portion 10 and the wrapping layer 20 being separated due to factors such as temperature changes and vibrations during the use of the aerosol generating product; on the other hand, the medium portion 10 and the wrapping layer 20 can be manufactured simultaneously.

[0051] The aerosol generating product in the embodiment of the present invention forms an integrated structure by forming the wrapping layer 20 and the medium part 10. On the one hand, the wrapping layer 20 and the medium part 10 can be formed synchronously, thereby improving the production efficiency of the aerosol generating product; on the other hand, the internal structure of the medium part 10 is made more compact, which is conducive to improving the heat transfer performance of the medium part 10, so that the temperature of the medium part 10 is more uniform during the heating process, and the consistency of aerosol generation is improved; at the same time, the problems of the thin sheet, filamentous component, and particle component falling off and difficult to clean in the thin sheet, filamentous component, or loose particle aerosol generating matrix in the prior art are solved. The denser internal structure of the wrapping layer 20 is conducive to improving the structural strength of the wrapping layer 20 and enhancing the protective effect of the wrapping layer 20. The structure of the bonding position of the wrapping layer 20 and the medium part 10 is more compact, which improves the bonding strength between the wrapping layer 20 and the medium part 10, and reduces the probability of the aerosol generating matrix segment 11 being deformed by heat after heating and separating from the wrapping layer 20.

[0052] The specific manner in which the medium portion 10 and the wrapping layer 20 form an integrated structure is not limited.

[0053] Exemplarily, the integral structure of the medium portion 10 and the wrapping layer 20 is formed by a co-extrusion process.

[0054] The co-extrusion process is an extrusion molding process in which different mixed materials are extruded from one or more molding dies. These mixed materials are respectively delivered to multiple sub-channels from a multi-channel head feed end, and are converged at the outlet position of the extrusion end of the multi-channel combination mold and extruded into the same extrusion mold. Finally, each extruded material is cooled and shaped to form an integrated structure.

[0055] It is understood that the media portion 10 and the wrapping layer 20 are extruded by different extruders.

[0056] Specifically, two extruders are used, and a "T"-shaped molding die is used to work online according to the set automatic control program. That is, the first extruder is used for extruding the medium part 10, and the molten material of the medium part 10 is extruded through the horizontal die head and reaches the common channel. The second extruder is used for extruding the wrapping layer 20, and the molten material of the wrapping layer 20 is extruded to the common channel through the extrusion die head, and the molten material of the wrapping layer 20 is wrapped on the surface of the molten material of the medium part 10 in the common channel through the bifurcated channel of the "T"-shaped channel, wherein the thickness of the wrapping layer 20 is adjusted by the extrusion speed.

[0057] See also Figure 1 , the aerosol generating article is cylindrical.

[0058] The specific components of the aerosol generating matrix are not limited herein. For example, in one embodiment, the aerosol generating matrix may include plant components, auxiliary components, smoke generating agent components, adhesive components, etc.

[0059] In some embodiments, the plant component is one or more combinations of powders formed by crushing tobacco raw materials, tobacco leaf fragments, tobacco stems, tobacco dust, and aromatic plants. The plant component is the core source of the flavor of the product. Endogenous substances in the plant component, such as nicotine, enter the human blood through atomization, promote the pituitary gland to produce dopamine, and thus obtain physiological satisfaction.

[0060] In some embodiments, the auxiliary agent component can be one or more combinations of inorganic fillers, lubricants, and emulsifiers. Among them, the inorganic filler includes one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. The inorganic filler can provide a skeleton support for the plant component, and the inorganic filler also has micropores, which can increase the porosity of the wall material after the plant component is formed, thereby increasing the aerosol release rate.

[0061] The lubricant includes one or more combinations of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. The lubricant can increase the fluidity of the particles, reduce the friction between the particles, make the overall density of the particle distribution more uniform, and also reduce the pressure required for mold molding and reduce the wear of the mold.

[0062] Emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers (also called surfactants) can reduce the interfacial tension of water-soluble and water-insoluble components in the mixed system, and form a relatively strong film on the surface of the droplets or form a double electric layer on the surface of the droplets due to the charge given by the emulsifier, preventing the droplets from aggregating with each other and maintaining a uniform emulsion. Emulsifying and homogenizing two immiscible components can improve the consistency of product quality.

[0063] The function of the smoke-generating agent component is to generate enough smoke and heat to carry out other aroma-generating components of the medium for people to smoke under a specific heat source. In one embodiment, the smoke-generating agent may include, for example: a monohydric alcohol (such as menthol); a polyhydric alcohol (such as propylene glycol, triethylene glycol, 1,3-butylene glycol and glycerol); an ester of a polyhydric alcohol (such as monoacetin, diacetin or triacetin); a monocarboxylic acid; a polycarboxylic acid (such as lauric acid, myristic acid) or an aliphatic ester of a polycarboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butylene glycol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, Triactin, meso-erythritol, diacetin mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, tributyrin, lauryl acetate) or one or more combinations thereof.

[0064] In some embodiments, the adhesive component is a natural plant-extracted, non-ionically modified viscous polysaccharide, including one or more combinations of tamarind polysaccharide, pullulan, seaweed polysaccharide, locust bean gum, guar gum, and xyloglucan. The adhesive is in close contact with the interface of the product component material by wetting, generating an intermolecular attraction, thereby playing the role of bonding the powder, liquid, etc. of the component material. At the same time, the use of natural plant-extracted, non-ionic adhesives can avoid the release of harmful substances such as methanol, formaldehyde, and acrolein caused by colloid modification, thereby improving the safety of the product.

[0065] It can be understood that the airflow can pass through the aerosol generating substrate segment 11, and the end where the airflow enters the aerosol generating substrate segment 11 is the air inlet end, and the end where the airflow leaves the aerosol generating substrate is the air outlet end.

[0066] The specific positions of the air inlet and the air outlet are not limited. For example, the air inlet and the air outlet are two opposite ends along the same direction on the aerosol generating matrix segment 11; for another example, the air inlet and the air outlet are the same end along the same direction on the aerosol generating matrix segment 11; for another example, the air inlet and the air outlet are respectively located on the aerosol generating matrix segment 11 in two directions perpendicular to each other.

[0067] Micropores are formed in the aerosol generating matrix segment 11, and the micropores are connected to form micro airways. A part of the micro airways is connected to the airway hole 11a, and another part of the micro airways directly penetrates the air inlet and outlet ends of the aerosol generating matrix segment 11. In this way, the aerosol can be discharged from the medium portion 10 in a variety of ways. For example, the aerosol generated by the aerosol generating matrix after heating can directly enter the airway hole 11a and be carried away by the airflow; or, the airflow directly enters the micro airway and discharges the aerosol carried in the micro airway; or, the aerosol enters the airway hole 11a from the micro airway.

[0068] It is understood that the micropores may be partially connected and partially disconnected, or all the micropores may be interconnected. For example, in an embodiment in which the medium portion 10 is a particle combination, the gaps between the particles constitute the micropores. The size of the micropores is determined by the gaps between the particles of the aerosol generating matrix. It is understood that the micropores are microscopic holes that cannot be directly identified by the naked eye.

[0069] The airway holes 11a and micropores can increase the surface area of ​​the aerosol generating matrix, facilitate heat transfer, and improve heating efficiency. The aerosol generating matrix releases aerosol when heated, and under the action of the negative pressure generated by the user's inhalation, it is transported to the outlet end of the aerosol generating product. The airway holes 11a and micropores can reduce the suction resistance of the user's inhalation, improve the user experience, and reduce the adverse effect of the condensed aerosol remaining in the medium part 10 and affecting the airflow.

[0070] The number of the airway holes 11a is not limited, and can be one or more.

[0071] The cross-sectional shape of the airway hole 11a along the vertical length direction is not limited, such as circular, triangular, square, etc.

[0072] In some embodiments, see Figure 1 , Figure 3 and Figure 4 The circumferential surface of the medium part 10 is provided with a groove 10a, and the groove 10a at least passes through one end of the medium part 10. The wrapping layer 20 covers at least part of the groove 10a, so that an outer airway is formed between the wrapping layer 20 and the covered groove 10a. In other words, the inner wall of the groove 10a and the wrapping layer 20 are together formed to form an airflow passage, and the aerosol generated by heating the medium part 10 can enter the airflow passage. The airflow passage cooperates with the airway hole 11a to facilitate the adjustment of the user's suction resistance, improve the aerosol extraction efficiency, and enhance the user's experience.

[0073] In some embodiments, see Figure 4 The groove 10a runs through both ends of the medium portion 10 along the length direction to reduce the obstruction encountered by the airflow passing through the groove 10a, thereby reducing the suction resistance of the user.

[0074] The specific number of the grooves 10a is not limited, and can be one or more. Figure 2 and Figure 3 The plurality of grooves 10 a are evenly spaced along the circumference of the medium portion 10 , so that the airflow passes through the medium portion 10 more evenly.

[0075] In some embodiments, see Figure 4 The wrapping layer 20 covers the entire open position of the groove 10a.

[0076] In some embodiments, see Figure 4 , Figure 5 and Figure 6 The wrapping layer 20 is wrapped around the circumferential surface of the aerosol generating matrix segment 11, so as to protect the aerosol generating matrix segment 11 and play a certain isolation role, thereby reducing the direct contact between the aerosol generating matrix segment 11 and the air, and the probability of the aerosol generating matrix being damp and deteriorating due to foreign matter such as water vapor, dust and germs in the air; at the same time, it avoids direct contact between the aerosol generating matrix segment 11 and other components in the aerosol generating device, thereby reducing the probability of the aerosol generating matrix being contaminated and the probability of the condensed aerosol corroding other components in the aerosol generating device.

[0077] The specific method of heating the aerosol-generating substrate segment 11 is not limited. For example, the heating method adopted for the aerosol-generating substrate segment 11 in the present application is a circumferential heating method. That is, the wrapping layer 20 is heated from the outside of the wrapping layer 20, and the wrapping layer 20 then transfers the heat to the aerosol-generating substrate segment 11, so as to avoid direct contact between the heating element and the aerosol-generating substrate segment 11.

[0078] In some embodiments, the thermal conductivity of the material of the wrapping layer 20 is greater than the thermal conductivity of the material of the aerosol generating matrix segment 11, so that the wrapping layer 20 can transfer heat to the aerosol generating matrix segment 11 more quickly, thereby making the aerosol generating matrix segment 11 heat up more quickly and generating aerosol more quickly, which is beneficial to improving user experience; and, because the wrapping layer 20 is wrapped around the circumferential surface of the aerosol generating matrix segment 11, the heating of each position of the circumferential surface of the aerosol generating matrix segment 11 is more uniform, so as to improve the consistency of aerosol generation.

[0079] The specific value of the thermal conductivity of the material of the wrapping layer 20 is not limited.

[0080] For example, the thermal conductivity of the material of the wrapping layer 20 is not less than 0.15 W / (m·k) (Watt / meter·Kelvins). In this way, the aerosol generating matrix segment 11 is heated more quickly, thereby increasing the aerosol release rate and improving the user's smoking taste. For example, the thermal conductivity of the material of the wrapping layer 20 is increased from 0.08 W / mk to 0.28 W / mk, and the aerosol release rate is increased from 15% to 45%.

[0081] The thermal conductivity of the material of the wrapping layer 20 may be 0.15 W / m*k, 0.2 W / mk, 0.28 W / mk, 0.3 W / mk, etc.

[0082] The specific type of the material with high thermal conductivity used for the wrapping layer 20 is not limited, for example, PP (polypropylene), PE (polyethylene), etc.

[0083] It is understandable that the material of the wrapping layer 20 is compatible with the heating method.

[0084] For example, when the heating method is laser heating, the material of the wrapping layer 20 is a light-absorbing material. By emitting high-energy laser to the wrapping layer 20, the wrapping layer 20 absorbs the energy of the high-energy laser and heats up, thereby playing a role in heating the aerosol-generating matrix segment 11. Since laser heating is non-contact heating, the heating element that emits high-energy laser does not need to be in direct contact with the wrapping layer 20, thereby reducing the potential risk of the wrapping layer 20 having an adverse effect on the heating element. At the same time, the use of light-absorbing materials can improve the efficiency of energy utilization, thereby reducing power consumption.

[0085] The specific type of the light absorbing material used in the wrapping layer 20 is not limited, such as graphene.

[0086] In some embodiments, the material of the wrapping layer 20 is a hydrophobic material, thereby reducing the probability of moisture in the air passing through the wrapping layer 20 and coming into contact with the medium portion 10, thereby causing the aerosol generating matrix to become damp and moldy, thereby extending the service life of the aerosol generating matrix and helping to improve the user's taste.

[0087] The specific type of the hydrophobic material used in the wrapping layer 20 is not limited, such as PC (Polycarbonate), PE, PTFE (Polytetrafluoroethylene), etc.

[0088] In some embodiments, see Figure 6 The wrapping layer 20 completely wraps the entire circumferential surface of the medium part 10, and the airflow flows into the medium part 10 from the end surface at one end of the medium part 10 along the length direction, and then flows out of the medium part 10 from the end surface at the other end of the medium part 10 along the length direction. In this way, the surface area of ​​the medium part 10 directly exposed to the outside is reduced, and the wrapping layer 20 better protects the medium part 10 and blocks the medium part 10 from the outside.

[0089] It will be appreciated that the wrap layer 20 is capable of blocking airflow through itself.

[0090] The material distribution in the wrapping layer 20 is not limited.

[0091] In some embodiments, the entire wrapping layer 20 is made of the same material, so that the wrapping layer 20 does not need to be interrupted to replace other materials during the co-extrusion process, which is beneficial to maintaining the continuity of the extrusion process and improving manufacturing efficiency. At the same time, it is beneficial to unify manufacturing parameters such as extrusion speed during the preparation process, reducing the manufacturing difficulty. Furthermore, the bonding force of each part of the same material is consistent, reducing the probability of breakage of the wrapping layer 20 during manufacturing and use.

[0092] In some other embodiments, see Fig. 9The wrapping layer 20 includes a first portion 21 and a second portion 22 , and the first portion 21 and the second portion 22 are made of different materials so that the materials of the first portion 21 and the second portion 22 are adapted to the characteristics of different portions in the dielectric portion 10 .

[0093] For example, the second part 22 is wrapped around the circumferential surface of the aerosol generating matrix segment 11, while the first part 21 is wrapped around the circumferential surface of other parts of the medium part 10 except the aerosol generating matrix segment 11. The second part 22 is made of light-absorbing material, while the first part 21 is made of hydrophobic material. In this way, the second part 22 can improve the aerosol generating efficiency of the aerosol generating matrix segment 11, and the first part 21 can reduce the adverse effects of water vapor in the air on the medium part 10.

[0094] The specific structural forms of the first part 21 and the second part 22 are not limited.

[0095] For example, see Fig. 9 The first part 21 and the second part 22 are both in the shape of a circular tube surrounding the medium part 10, and are arranged along the length direction of the medium part 10. On the one hand, the first part 21 and the second part 22 can cover the circumferential surface of the medium part 10 as much as possible; on the other hand, during the co-extrusion process of the wrapping layer 20, the molding of the first part 21 and the second part 22 can be achieved by simply replacing the material without the need for an additional mold, thereby improving the molding efficiency of the first part 21 and the second part 22, which is conducive to improving production efficiency.

[0096] The first portion 21 and the second portion 22 may be spaced apart from each other along the length direction, or may be connected along the length direction.

[0097] The specific connection method between the first part 21 and the second part 22 is not limited.

[0098] For example, the first portion 21 and the second portion 22 are bonded together along the length direction so that the cross-sectional dimensions of the wrapping layer 20 remain consistent, which is beneficial for extrusion molding; Fig. 9 The first part 21 and the second part 22 are overlapped radially to increase the contact area between the two, thereby improving the bonding strength between the two and reducing the risk of fracture between the two.

[0099] The medium portion 10 includes other parts besides the aerosol-generating substrate segment 11 .

[0100] For example, see Figure 4 , Figure 5 , Figures 7 to 9 The medium portion 10 further includes a functional segment 12 , and the functional segment 12 is disposed at at least one of the two ends of the aerosol generating substrate segment 11 along the length direction.

[0101] It should be noted that, in the embodiments of the present invention, the length direction does not specifically refer to the direction in which the outer contour of the aerosol-generating substrate segment 11 is the longest. In the case where the aerosol-generating product has a functional segment 12, the arrangement direction of the functional segment 12 and the aerosol-generating substrate segment 11 is consistent with the length direction; the direction in which the aerosol-generating product is inserted into the heater and the direction in which the aerosol-generating product is taken out of the heater are both parallel to the length direction. The length of the aerosol-generating substrate segment 11 along the length direction may be longer, shorter, or the same as the length in other directions.

[0102] For example, when the appearance of the aerosol generating substrate segment 11 is cylindrical, the length direction is the axial direction of the aerosol generating substrate segment 11. It should be noted that even when the axial length of the aerosol generating substrate segment 11 is less than its diameter, the length direction of the aerosol generating substrate segment 11 is still the axial direction. For another example, when the appearance of the aerosol generating substrate segment 11 is a rectangular parallelepiped, the length direction is still the direction defined above, that is, the arrangement direction of the functional segment 12 and the aerosol generating substrate segment 11, or the direction of taking and placing the aerosol generating product. The length direction of the aerosol generating substrate segment 11 can be any direction of the length, width, and height of the rectangular parallelepiped.

[0103] When the aerosol generating matrix segment 11 is used alone, that is, not combined with the functional segment 12, the length direction is the perpendicular direction of the distance between the two ends of the aerosol generating matrix segment 11. For example, when the aerosol generating matrix segment 11 is a cylinder, the length direction is the perpendicular direction of the distance between the two end faces. For example, when the aerosol generating matrix segment 11 is a column with a cross-section in a triangular, polygonal, fan-shaped, oblong, elliptical or the like, the length direction is the axial direction. When the aerosol generating matrix segment 11 is a rectangular parallelepiped, the length direction of the aerosol generating matrix segment 11 can be any direction of the length, width or height of the rectangular parallelepiped.

[0104] It is understood that in some embodiments, the airflow enters from one end of the aerosol generating substrate segment 11 along the length direction and exits from the other end. In other words, one end of the aerosol generating substrate segment 11 along the length direction is the air intake end, and the other end is the air outlet end.

[0105] The functional section 12 located at the air outlet end of the aerosol generating substrate section 11 includes at least one of a filtering section and a cooling section.

[0106] The cooling section is provided with a plurality of air flow holes which penetrate along the length direction. The air flow holes can extend the flow path of the airflow and increase the contact area between the airflow and the cooling section, thereby improving the heat exchange efficiency between the airflow and the cooling section, thereby lowering the temperature of the aerosol during the flow, reducing the chance of the aerosol burning the mouth, improving the user experience, and facilitating the adjustment of the suction resistance.

[0107] The filter section is provided with a plurality of micro holes, and at least some of the micro holes are connected to form a micro airway that passes through the filter section along the length direction, and the airflow can pass through the filter section through the micro airway. By providing the micro holes, the contact area between the filter section and the airflow is increased, so that the filter section can better absorb impurities entrained in the airflow, thereby improving the user experience, and at the same time, it is convenient to adjust the suction resistance.

[0108] Micropores are pores in a microscopic sense.

[0109] In the embodiment in which both the cooling section and the filtering section are provided, the cooling section is arranged between the filtering section and the aerosol generating matrix section 11 to improve the filtering effect of the filtering section.

[0110] The specific number of cooling sections is not limited, and can be one or more.

[0111] The specific number of filter segments is not limited and can be one or more.

[0112] The materials of the cooling section include but are not limited to one or more combinations of PE (polyethylene), PLA (Polylactic acid, also known as polylactide), PBAT (butyleneadipate-co-terephthalate), and PP (Polypropylene).

[0113] The material of the filter section includes but is not limited to one or more combinations of PE (polyethylene), PLA (Polylactic acid, also known as polylactide), PBAT (butyleneadipate-co-terephthalate), and PP (Polypropylene).

[0114] The materials of the cooling section and the filtering section can be the same or different.

[0115] It can be understood that at least one of the two ends of the aerosol generating matrix segment 11 along the length direction is provided with a functional segment 12. The functional segment 12 may be provided at the air inlet end of the aerosol generating matrix segment 11, or at the air outlet end of the aerosol generating matrix segment 11, or at both the air inlet end and the air outlet end of the aerosol generating matrix segment 11.

[0116] Exemplarily, the functional segment 12 located at the air inlet end of the aerosol generating matrix segment 11 includes at least a supporting segment, which can improve the overall structural strength of the medium portion 10 and, at the same time, can block debris falling off the aerosol generating matrix segment 11 to prevent it from falling into other parts of the aerosol generating device.

[0117] It will be appreciated that the airflow is able to pass through the support segment into the aerosol-generating substrate segment 11 .

[0118] In some embodiments, the first portion 21 is wrapped around the circumferential surface of the functional segment 12 , and the second portion 22 is wrapped around the circumferential surface of the aerosol generating substrate segment 11 .

[0119] The material of the first part 21 is adapted to the function realized by the functional segment 12 , and the material of the second part 22 is adapted to the aerosol generating matrix segment 11 .

[0120] In some embodiments, see Figure 7 and Figure 8 The wrapping layer 20 at least wraps around the circumferential surface of the functional segment 12 to provide a certain degree of protection and isolation for the functional segment 12 , thereby reducing the probability of damage to the functional segment 12 due to moisture, heating and denaturation, and other problems.

[0121] For example, in an embodiment in which a functional segment 12 is provided at the air outlet end of the aerosol generating matrix segment 11, the functional segment 12 can come into direct contact with the user's lips so that the user can inhale the aerosol. A wrapping layer 20 is wrapped around the circumferential surface of the functional segment 12. The wrapping layer 20 can isolate germs and dust and, at the same time, can block a certain amount of heat from the medium portion 10, thereby reducing the chance of burning the mouth.

[0122] It will be appreciated that the material of the functional segment 12 is different from the material of the aerosol-generating substrate segment 11 .

[0123] In some embodiments, see Figure 8 The wrapping layer 20 wraps the interface between the aerosol generating matrix segment 11 and the functional segment 12, thereby facilitating the connection stability between the aerosol generating matrix segment 11 and the functional segment 12, reducing the probability of fracture due to low bonding force at the interface between the aerosol generating matrix segment 11 and the functional segment 12 after extrusion molding due to different materials, thereby improving the overall structural strength of the aerosol generating product.

[0124] The material of the encapsulation layer 20 is related to the position of the functional section 12 .

[0125] For example, a functional section 12 is provided at the air outlet end of the aerosol generating matrix section 11, and the material of the wrapping layer 20 is a fragrance-carrying material for loading fragrances. The emulsification technology is used to load fragrances with low boiling points and high volatility into the wrapping layer 20 to supplement the fragrance, enrich the types of fragrances in the airflow and play a role in fragrance compensation. At the same time, it is beneficial to improve the uniformity of the fragrance, thereby improving the release efficiency of the fragrance and effectively improving the user experience.

[0126] The specific type of the fragrance-carrying material is not limited, for example, a mixture of starch, polyvinyl alcohol and water, a mixture of starch, polymethyl cellulose and water, a mixture of starch, polyvinyl acetate and water, etc.

[0127] For another example, the air outlet end of the aerosol generating matrix segment 11 is provided with a functional segment 12, and the material of the wrapping layer 20 is an antibacterial material. The wrapping layer 20 is used to directly contact the lips of the user. By using the antibacterial material, the growth of bacteria on the wrapping layer 20 is effectively inhibited, the odor is reduced, and the cleanliness of the surface of the wrapping layer 20 is improved, which is conducive to more hygienic and healthy use by the user.

[0128] The specific type of antibacterial material is not limited. For example, an antibacterial agent is doped in the matrix. The material of the matrix can be PP, etc., and the antibacterial agent can be quaternary phosphate salts, quaternary ammonium salts, phenolic alcohol esters, biguanides, imidazoles, etc.

[0129] It is understood that the extrusion direction of the co-extrusion process is the length direction of the aerosol generating article.

[0130] The specific shapes of the dielectric portion 10 and the wrap layer 20 are not limited.

[0131] For example, see Figure 1 The medium part 10 is a cylinder, the wrapping layer 20 is a circular tubular structure, and the medium part 10 and the wrapping layer 20 are arranged coaxially. In this way, the cross section of the medium part 10 perpendicular to the length direction is circular, thereby reducing the probability of damage to the medium part 10 due to stress concentration during manufacturing and use. At the same time, the circular cross section can facilitate the user's sucking and improve the user experience.

[0132] It can be understood that the length direction of the medium portion 10 is the axial direction of the cylinder.

[0133] An embodiment of the present invention further provides an aerosol generating system, comprising an aerosol generating device and the aerosol generating product of any one of the aforementioned embodiments, wherein the aerosol generating device comprises a heating element for heating the aerosol generating substrate segment 11 to generate an aerosol.

[0134] The specific form of the heating element is not limited. For example, the heating element is a resistor / electromagnetic heating wire / sheet / needle / tube, and the heating element is attached to the wrapping layer 20. After the heating element is turned on, it transfers heat to the wrapping layer 20, and the wrapping layer 20 then transfers heat to the aerosol generating matrix segment 11 so that the aerosol generating matrix generates aerosol. For another example, the heating element is an infrared / microwave / laser heating device, and the laser heating device irradiates high-energy infrared rays / microwaves / lasers to the wrapping layer 20 to heat up the wrapping layer 20, and the wrapping layer 20 then transfers heat to the aerosol generating matrix segment 11 so that the aerosol generating matrix generates aerosol.

[0135] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction.

[0136] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An aerosol generating product, characterized in that include: The medium portion comprises at least an aerosol generating substrate segment, wherein the aerosol generating substrate segment is provided with an airway hole, and the airway hole at least penetrates one end of the aerosol generating substrate segment; A wrapping layer, wrapping at least a portion of the circumferential surface of the dielectric portion along the length direction; The medium portion and the wrapping layer are an integrated structure.

2. The aerosol-generating article according to claim 1, wherein A groove is provided on the circumferential surface of the medium part, and the groove at least passes through one end of the medium part. The wrapping layer covers at least a part of the groove, so that an outer air passage is formed between the wrapping layer and the covered groove.

3. The aerosol-generating article according to claim 1, wherein The wrapping layer wraps around the circumferential surface of the aerosol generating substrate segment, and the thermal conductivity of the material of the wrapping layer is greater than the thermal conductivity of the material of the aerosol generating substrate segment.

4. The aerosol-generating article of claim 1, wherein: The wrapping layer is wrapped around the circumferential surface of the aerosol generating substrate segment, and the thermal conductivity of the material of the wrapping layer is not less than 0.15 W / m*k.

5. The aerosol-generating article of claim 1, wherein: The wrapping layer wraps around the circumferential surface of the aerosol generating substrate segment, and the material of the wrapping layer is a light absorbing material or a hydrophobic material.

6. The aerosol-generating article of claim 1, wherein: The wrapping layer completely wraps the entire circumferential surface of the medium portion; and / or the entire wrapping layer is made of the same material.

7. The aerosol-generating article of claim 1, wherein: The wrapping layer includes a first part and a second part, and the first part and the second part are made of different materials.

8. An aerosol-generating article according to claim 7, characterized in that The first part and the second part are both in a circular tube shape surrounding the medium part, and are arranged along the length direction of the medium part.

9. The aerosol-generating article of claim 7, wherein: The medium portion further comprises a functional segment, and the functional segment is provided at at least one end of the aerosol generating substrate segment along the length direction, the first portion is wrapped around the circumferential surface of the functional segment, and the second portion is wrapped around the circumferential surface of the aerosol generating substrate segment.

10. The aerosol-generating article of claim 1, wherein: The medium portion further comprises a functional segment, and the functional segment is provided at at least one end of the aerosol generating substrate segment along the length direction, and the wrapping layer at least wraps around the circumferential surface of the functional segment.

11. An aerosol-generating article according to claim 10, characterized in that The wrapping layer wraps the interface between the aerosol generating matrix segment and the functional segment.

12. The aerosol-generating article of claim 10, wherein: The functional section is disposed at the air outlet end of the aerosol generating matrix section, and the material of the wrapping layer is a fragrance-carrying material for carrying fragrances; and / or the material of the wrapping layer is an antibacterial material.

13. The aerosol-generating article of claim 1, wherein: The medium portion and the wrapping layer are an integrated structure formed by a co-extrusion process.

14. The aerosol-generating article of claim 1, wherein: The medium part is a cylinder, the wrapping layer is a circular tubular structure, and the medium part and the wrapping layer are coaxially arranged.

15. An aerosol generating system, characterized in that: The aerosol generating system comprises an aerosol generating device and the aerosol generating article according to any one of claims 1 to 14, wherein the aerosol generating device comprises a heating element for heating the aerosol generating substrate segment to generate an aerosol.

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