Aerosol-generating article

Abstract

The present application relates to the technical field of aerosol generation. Provided is an aerosol-generating article, comprising an aerosol-generating substrate section and a wrapping layer, wherein the aerosol-generating substrate section is configured to generate aerosol; and the wrapping layer comprises an anti-leakage layer and a connecting layer, the anti-leakage layer being wrapped around an outer peripheral face of the aerosol-generating substrate section, and the connecting layer being wrapped around an outer peripheral face of the anti-leakage layer. The aerosol-generating article provided in the present application can reduce the leakage of internal substances from the aerosol-generating article.

Description

An aerosol generating product

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202311461178.1 and application date of November 3, 2023, and claims the priority of the above-mentioned Chinese patent application. The entire content of the above-mentioned Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the field of aerosol generation technology, and in particular to an aerosol generating product. Background Art

[0004] This section is intended to provide a background or context for the embodiments of the present application. No description herein is admitted to be prior art by virtue of its inclusion in this section.

[0005] An aerosol-generating article includes an aerosol-generating substrate segment. The aerosol-generating substrate segment can generate an aerosol by ignition or by heating without combustion. For example, the heat-without-combustion aerosol-generating substrate segment is heated using an external heat source to a sufficient temperature to emit an aerosol. The aerosol-generating substrate segment does not burn, and the aerosol is released during use by heating the aerosol-generating substrate segment.

[0006] In the related art, the internal substances of the aerosol-generating matrix segment easily penetrate into the outer surface, resulting in "yellow spots" on the surface of the aerosol-generating product.

[0007] Summary of the Invention

[0008] In view of this, embodiments of the present application aim to provide an aerosol-generating article capable of reducing the external leakage of internal substances in the aerosol-generating article.

[0009] In order to achieve the above-mentioned purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0010] The present application discloses an aerosol generating article, comprising:

[0011] an aerosol-generating substrate segment, the aerosol-generating substrate segment being used to generate an aerosol;

[0012] The wrapping layer comprises an impermeable layer and a connecting layer. The outer peripheral surface of the aerosol generating substrate segment is wrapped with the impermeable layer, and the connecting layer is wrapped around the outer peripheral surface of the impermeable layer.

[0013] In one embodiment, the aerosol-generating article comprises a support segment, which is arranged at one end of the aerosol-generating substrate segment in the longitudinal direction, and the outer peripheral surface of the support segment is wrapped with the anti-seepage layer.

[0014] In one embodiment, the aerosol-generating article comprises a cleaning section, which is arranged at one end of the aerosol-generating substrate section away from the supporting section in the longitudinal direction, and the outer peripheral surface of the cleaning section is wrapped with the anti-seepage layer.

[0015] In one embodiment, the aerosol generating article includes a cooling section, which is arranged at one end of the supporting section away from the aerosol generating substrate section in the longitudinal direction, and the outer peripheral surface of the cooling section is wrapped with the connecting layer.

[0016] In one embodiment, the aerosol generating article comprises a filter segment, which is arranged at one end of the cooling segment longitudinally away from the supporting segment, and the outer peripheral surface of the filter segment is wrapped with the connecting layer.

[0017] In one embodiment, the aerosol generating product includes at least one of a cooling section and a filtering section, and at least one of the cooling section and the filtering section is arranged at one end of the aerosol generating substrate section along the longitudinal direction. The wrapping layer includes an anti-leakage layer, and the outer peripheral surface of the filtering section and / or the cooling section is wrapped with the anti-leakage layer, and the connecting layer is wrapped on the outer peripheral surface of the anti-leakage layer.

[0018] In one embodiment, the anti-seepage layer includes at least one of coated paper and laminated paper, and the working temperature of the anti-seepage layer is not higher than 350°C.

[0019] In one embodiment, the weight of the anti-seepage layer is 20 g / m 2 Up to 75g / m 2 between.

[0020] In one embodiment, the air permeability of the anti-seepage layer is between 20cu and 60cu.

[0021] In one embodiment, the anti-leakage layer is made of breathable fiber paper.

[0022] In one embodiment, the breathable fiber paper is broadleaf pulp fiber paper.

[0023] In one embodiment, the air permeability of the anti-leakage layer is not greater than 20cu.

[0024] In one embodiment, the weight of the anti-leakage layer is 20 g / m 2 Up to 65g / m 2 between.

[0025] In one embodiment, the connecting layer is made of fiber paper or PE.

[0026] The present application discloses an aerosol-generating article. On the one hand, by wrapping an impermeable layer around the outer circumference of an aerosol-generating matrix segment, this not only protects the aerosol-generating matrix segment to a certain extent but also prevents substances in the smoke-generating medium within the aerosol-generating matrix segment from leaking onto the surface of the aerosol-generating article, thereby ensuring the neat appearance and pleasant puffing experience of the aerosol-generating article. On the other hand, by providing a connecting layer around the outer circumference of the impermeable layer, this further protects the aerosol-generating matrix segment, reducing the surface area of ​​the aerosol-generating matrix segment directly exposed to the outside world. This reduces the chance of the aerosol-generating matrix segment becoming damp and deteriorating due to contact with air, and also reduces the chance of the aerosol-generating matrix segment coming into contact with other components of the aerosol-generating device and causing contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a schematic cross-sectional view of an aerosol-generating article provided in a first embodiment of the present application;

[0028] Figure 2 is an enlarged view of point A in Figure 1;

[0029] FIG3 is a cross-sectional schematic diagram of an aerosol-generating article provided in a second embodiment of the present application;

[0030] Figure 4 is an enlarged view of point B in Figure 3;

[0031] FIG5 is a cross-sectional schematic diagram of an aerosol-generating article provided in a third embodiment of the present application;

[0032] Figure 6 is an enlarged view of point C in Figure 5. DETAILED DESCRIPTION

[0033] It should be noted that, unless there is a conflict, the embodiments and technical features in the embodiments of this 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 this application and should not be regarded as an improper restriction on this application.

[0034] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments. The descriptions of "first", "second", etc. in the embodiments of the present application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly including at least one feature. In the description of the embodiments of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0035] In one aspect, an embodiment of the present application provides an aerosol-generating article. Referring to Figures 1 to 3 , the aerosol-generating article 100 includes an aerosol-generating substrate segment 1 and a wrapping layer 2. The aerosol-generating substrate segment 1 is configured to generate aerosols. The wrapping layer 2 includes an impermeable layer 21 and a connecting layer 22. The outer circumference of the aerosol-generating substrate segment 1 is wrapped with the impermeable layer 21, and the connecting layer 22 is wrapped around the outer circumference of the impermeable layer 21.

[0036] The aerosol-generating article 100 provided in the embodiments of the present application, on the one hand, comprises an impermeable layer 21 wrapped around the outer circumference of the aerosol-generating matrix segment 1. This not only protects the aerosol-generating matrix segment 1 to a certain extent, but also prevents substances in the smoke-generating medium in the aerosol-generating matrix segment 1 from leaking onto the surface of the aerosol-generating article 100, thereby ensuring the neat appearance of the aerosol-generating article 100 and the pleasant taste of the inhalation. On the other hand, the connection layer 22 is provided on the outer circumference of the impermeable layer 21, thereby further protecting the aerosol-generating matrix segment 1 and reducing the surface area of ​​the aerosol-generating matrix segment 1 directly exposed to the outside world. This reduces the probability of the aerosol-generating matrix segment 1 becoming damp and deteriorating due to contact with air, and also reduces the probability of the aerosol-generating matrix segment 1 coming into contact with other components of the aerosol-generating device and causing contamination.

[0037] It should be noted that the substance in the smoke-generating medium described herein may be a liquid substance such as glycerin and propylene glycol that easily absorbs moisture in the air.

[0038] It should be noted that the anti-seepage layer 21 mentioned here is capable of blocking substances in the smoke-generating medium and preventing them from passing through the anti-seepage layer 21 and entering the connecting layer 22 .

[0039] In one embodiment, referring to Figures 1 to 3 , an aerosol-generating article 100 includes a support segment 3 disposed at one longitudinal end of an aerosol-generating substrate segment 1. Exemplarily, the support segment 3 is capable of withstanding the temperature of the aerosol generated by the aerosol-generating substrate segment 1 while maintaining its shape. Thus, by contacting one end of the support segment 3 with the aerosol-generating substrate segment 1, the support segment 3 supports and positions the aerosol-generating substrate segment 1, thereby preventing the aerosol-generating substrate segment 1 from moving longitudinally.

[0040] The outer circumference of the support segment 3 is coated with an impermeable layer 21. By coating the outer circumference of the support segment 3 with the impermeable layer 21, the aerosol generated by the aerosol-generating substrate segment 1 during heating can be prevented from condensing and penetrating the outer surface of the aerosol-generating article 100 after the support segment 3 cools, thereby ensuring a neat appearance of the aerosol-generating article 100.

[0041] Exemplarily, in one embodiment, the anti-seepage layer 21 can be one layer or more layers. The anti-seepage layer 21 in Figures 1, 2 and 3 is a single layer, and the anti-seepage layer 21 is wrapped around the outer peripheral surface of the aerosol generating matrix segment 1 and the outer peripheral surface of the supporting segment 3, and then the connecting layer 22 is wrapped around its outer peripheral surface; it can also include two layers, one anti-seepage layer 21 is wrapped around the outer peripheral surface of the aerosol generating matrix segment 1, and the other anti-seepage layer 21 is wrapped around the outer peripheral surface of the supporting segment 3, and then a connecting layer 22 is wrapped around the outer peripheral surface of the two anti-seepage layers 21.

[0042] In some embodiments, the support segment 3 can withstand temperatures no higher than the first temperature. That is, the support segment 3 maintains its shape at the first temperature. Thus, the support segment 3 exhibits high heat resistance, thereby preventing risks such as thermal collapse, thermal deformation, and debris from the support segment 3 that may clog the airway of the aerosol-generating matrix segment 1, leading to unstable aerosol release.

[0043] It should be noted that micropores may exist within the aerosol-generating matrix segment 1. For example, in the aerosol-generating matrix segment 1 of a particle assembly, the gaps between the particles constitute micropores. However, the airways described in this application are different from micropores. The airways described in this application are pores in the macroscopic sense, while micropores are pores in the microscopic sense. The projected area and length of the airways are much larger than those of the micropores. The airways are primarily formed by design and processing, such as by die processing. Therefore, the projected area and length of the airways can be changed according to design requirements, while the size of the micropores is determined by the gaps between the particles. For example, if the material is a granular material, the aerosol-generating matrix segment 12 formed by extrusion has micropores. The projected area and length of the micropores are naturally formed by the extrusion process and the material composition. The micropores can be formed by a certain expansion of the material after it flows out of the die.

[0044] In one embodiment, the connecting layer 22 is made of fiber paper or PE (polyethylene). For example, the connecting layer 22 can be made of fiber paper. Fiber paper has high strength, effectively protecting the aerosol-generating substrate segment 1 from external damage and maintaining the integrity and shape of the aerosol-generating article 100. It also has a certain degree of air permeability, which can improve the mouthfeel during inhalation. Furthermore, fiber paper has a low production cost, which can reduce the production cost of the aerosol-generating article 100. The connecting layer 22 can also be made of PE. PE has excellent water and moisture resistance, keeping the aerosol-generating article dry and preventing moisture from affecting its taste and quality. It also has good abrasion resistance, resisting external wear and tear, and maintaining the appearance of the aerosol-generating article 100 intact.

[0045] For example, in one embodiment, a flavored additive may be added to the connecting layer 22 to provide the user with a better smoking experience.

[0046] For example, in one embodiment, a mark or the like may be printed on the connection layer 22 to provide the user with direction identification and provide a good user experience.

[0047] In one embodiment, referring to FIG. 1 , the aerosol-generating article 100 includes a cleaning section 4 , which is disposed at one end of the aerosol-generating substrate section 1 away from the supporting section 3 in the longitudinal direction. On the one hand, the external airflow can be reduced or blocked from contacting the aerosol generating matrix segment 1 through the end face of the aerosol generating matrix segment 1 away from the support segment 3 in the longitudinal direction, thereby reducing the heat dilution caused by the external airflow, so that the temperature field of the heated aerosol generating matrix segment 1 is relatively stable and the thermal efficiency is good; on the other hand, one end of the aerosol generating matrix segment 1 in the longitudinal direction is blocked, so that the aerosol generating matrix segment 1 is heated to generate aerosol in a low-oxygen or oxygen-free environment. At this time, the generated aerosol will diffuse toward the aerobic area, that is, diffuse toward the external airflow, and finally be extracted by the external airflow. Since the aerosol generating matrix segment 1 has less oxygen participation in the heating process, the generation of harmful substances can be reduced, and the probability of carbonization of the aerosol generating matrix segment 1 is reduced; on the other hand, by arranging a cleaning section 4 on the end face of the aerosol generating matrix segment 1 away from the support segment 3 in the longitudinal direction, the suction resistance of the aerosol generating product 100 can be adjusted to effectively solve the problem of the aerosol generating matrix segment 1 falling after inhalation.

[0048] The outer circumference of the clean section 4 is coated with an impermeable layer 21. Thus, by coating the outer circumference of the clean section 4 with the impermeable layer 21, on the one hand, aerosol generated by the aerosol-generating substrate section 1 during heating is prevented from condensing on the inner wall of the clean section 4 and penetrating to the outer surface of the aerosol-generating article 100; on the other hand, substances in the smokable medium in the support section 3 and the aerosol-generating substrate section 1 are prevented from flowing longitudinally into the clean section 4 under the action of gravity, causing leakage.

[0049] In one embodiment, referring to Figures 1 to 3 , the aerosol-generating article 100 includes a cooling section 5 , which is disposed at one end of the support section 3 longitudinally distal to the aerosol-generating matrix section 1. Thus, under the influence of negative suction pressure, the aerosol generated by the aerosol-generating matrix section 1 flows sequentially through the support section 3 and the cooling section 5 . By providing the cooling section 5 at the end of the support section 3 longitudinally distal to the aerosol-generating matrix section 1, the inlet temperature of the aerosol can be reduced to a level acceptable to the human body, thereby resolving the problem of "burning the mouth" during inhalation. Furthermore, based on the principle of heat exchange, the support section 3 also has a certain cooling effect on the aerosol as it passes through it.

[0050] The outer surface of the cooling section 5 is coated with a connecting layer 22. This, on the one hand, can protect the cooling section 5 to a certain extent, thereby increasing the service life of the cooling section 5; on the other hand, the connecting layer 22 can connect the cooling section 5, the support section 3, the aerosol generating matrix section 1, and the cleaning section 4, thereby improving the connection stability.

[0051] In one embodiment, referring to Figures 1 to 3 , the aerosol-generating article 100 includes a filter section 6 disposed at one end of the cooling section 5 longitudinally distal from the support section 3. Exemplarily, the filter section 6 not only blocks particles of a target particle size but also adjusts the draw resistance. For example, the filter section 6 can filter large particles similar to powdered substances. Aerosols filtered through the filter section 6 have a more consistent particle size and a more refined taste.

[0052] The outer surface of the filter section 6 is wrapped with a connecting layer 22. This, on the one hand, can protect the filter section 6 to a certain extent, thereby increasing the service life of the filter section 6; on the other hand, the connecting layer 22 can connect the filter section 6, the cooling section 5, the support section 3, the aerosol generating matrix section 1, and the cleaning section 4, thereby improving the connection stability.

[0053] Illustratively, in one embodiment, the outer peripheral surfaces of the filter section 6 and the cooling section 5 can be wrapped with an anti-seepage layer 21, and then the connecting layer 22 is wrapped around the outer peripheral surface of the anti-seepage layer 21. In this way, the aerosol can be prevented from condensing in the filter section 6 and the cooling section 5 and penetrating into the outer peripheral surface of the aerosol generating product 100.

[0054] For example, in one embodiment, the anti-seepage layer 21 may not be provided on the outer peripheral surface of the filtration section 6 and the cooling section 5, because both the filtration section 6 and the cooling section 5 contain adsorbents, which can adsorb the liquid after the aerosol is condensed. In this way, the cost of the aerosol generating product 100 can be reduced.

[0055] In one embodiment, the aerosol-generating article 100 includes at least one of a cooling section 5 and a filtering section 6, and at least one of the cooling section 5 and the filtering section 6 is disposed at one longitudinal end of the aerosol-generating substrate section 1. Exemplarily, the aerosol-generating article 100 includes the cooling section 5, which can be disposed at one longitudinal end of the aerosol-generating substrate section 1; the aerosol-generating article 100 includes the cooling section 5 and a support section 3, the support section 3 being disposed at one longitudinal end of the aerosol-generating substrate section 1, and the cooling section 5 being disposed at one longitudinal end of the support section 3 that is distal to the aerosol-generating substrate section 1. The aerosol generating product 100 includes a cooling section 5 and a filtering section 6. The cooling section 5 can be arranged at one end of the aerosol generating matrix section 1 in the longitudinal direction, and the filtering section 6 is arranged at one end of the cooling section 5 in the longitudinal direction away from the aerosol generating matrix section 1; the aerosol generating product 100 includes a cooling section 5, a filtering section 6 and a supporting section 3. The supporting section 3 is arranged at one end of the aerosol generating matrix section 1 in the longitudinal direction, the cooling section 5 is arranged at one end of the support section 3 in the longitudinal direction away from the aerosol generating matrix section 1 in the longitudinal direction, and the filtering section 6 is arranged at one end of the cooling section 5 in the longitudinal direction away from the aerosol generating matrix section 1.

[0056] 1 and 2 , the wrapping layer 2 includes a leak-proof layer 23, and the outer peripheral surface of the filtration section 6 and / or the cooling section 5 is wrapped with the leak-proof layer 23. For example, the outer peripheral surface of the filtration section 6 may be wrapped with the leak-proof layer 23, the outer peripheral surface of the cooling section 5 may be wrapped with the leak-proof layer 23, or the outer peripheral surface of both the filtration section 6 and the cooling section 5 may be wrapped with the leak-proof layer 23. Thus, by providing the leak-proof layer 23, on the one hand, rising aerosol can be prevented from flowing out of the outer side of the filtration section 6 and / or the cooling section 5, thereby improving the utilization rate of the aerosol; on the other hand, the longitudinal strength of the filtration section 6 and / or the cooling section 5 can be increased, making them less prone to bending, thereby increasing the stiffness of the aerosol generating article 100.

[0057] The connecting layer 22 is wrapped around the outer circumference of the anti-leakage layer 23. This, on the one hand, can protect the cooling section 5 and / or the filtering section 6 to a certain extent, thereby increasing the service life of the cooling section 5 and / or the filtering section 6; on the other hand, the connecting layer 22 can connect the cooling section 5 and / or the filtering section 6 with the support section 3 and the aerosol generating matrix section 1, thereby improving the connection stability.

[0058] In some embodiments, the projections of the filter segment 6, the support segment 3, the cleaning segment 4, the cooling segment 5, and the aerosol-generating matrix segment 1 are all aligned, with the projections being perpendicular to the longitudinal direction. For example, in one embodiment, the projections of the filter segment 6, the support segment 3, the cleaning segment 4, the cooling segment 5, and the aerosol-generating matrix segment 1 are all circular and have the same outer diameter. This facilitates assembly of the above structure into the connecting layer 22.

[0059] To prevent substances within the aerosol-generating matrix, such as those in the smoky medium, from penetrating to the outer surface, some related technologies employ metal or plastic film as barrier paper on the outer surface of aerosol-generating articles. While this can provide a certain degree of barrier effect, the introduction of metal or plastic cannot guarantee the biosafety of the barrier paper during actual use. Other related technologies achieve this barrier effect by using a metal inner layer and an oleophobic outer layer of a composite barrier paper. However, the oleophobic coating may contain toxic substances, making it impossible to guarantee biosafety.

[0060] In one embodiment, the impermeable layer 21 comprises at least one of coated paper and laminated paper. Exemplarily, the impermeable layer 21 may be coated paper. Coated paper, on the one hand, exhibits excellent water and oil repellency, effectively preventing substances in the smoke-generating medium and liquids from condensed aerosols from penetrating the outer surface of the aerosol-generating article 100, thereby maintaining the neat appearance of the aerosol-generating article 100. Furthermore, coated paper offers excellent biosafety, reducing harm to the human body. The impermeable layer 21 may also be laminated paper. On the one hand, laminated paper exhibits excellent water and oil repellency, effectively preventing substances in the smoke-generating medium and liquids from condensed aerosols from penetrating the outer surface of the aerosol-generating article 100, thereby maintaining the neat appearance of the aerosol-generating article 100. Furthermore, laminated paper enhances the hardness and stability of the aerosol-generating article 100, making it easier to carry. The impermeable layer 21 may also be a composite of laminated and laminated paper, which further enhances the impermeability of the impermeable layer 21.

[0061] The operating temperature of the barrier layer 21 is not higher than 350° C. (inclusive). For example, the operating temperature of the barrier layer 21 may be between 250° C. and 350° C. Thus, by setting a suitable operating temperature, the aerosol-generating substrate segment 1 can be sufficiently heated to generate aerosol without causing damage to the barrier layer 21, such as cracking.

[0062] It should be noted that coated paper refers to special paper impregnated with resin material and dried to a certain degree of solidification. Laminated paper refers to a composite material with plastic particles coated on the surface of special paper.

[0063] For example, in one embodiment, the anti-seepage layer 21 may be made of hemp pulp fiber paper as the bottom layer, and then the hemp pulp fiber paper is coated with polysaccharide or PLA (polylactic acid).

[0064] In one embodiment, the weight of the anti-seepage layer 21 is 20 g / m 2 Up to 75g / m 2 For example, the weight of the anti-seepage layer 21 can be 20 g / m 2 , 25g / m2 , 30g / m 2 , 35g / m 2 , 40g / m 2 , 45g / m 2 , 50g / m 2 , 55g / m 2 , 60g / m 2 , 65g / m 2 , 70g / m 2 or 75g / m 2 By setting a suitable gram weight value, not only can the load capacity of the anti-seepage layer 21 be increased, thereby increasing the anti-seepage effect, but the overall weight of the aerosol generating product 100 can also be reduced, making it easier to carry.

[0065] For example, in one embodiment, the weight of the anti-seepage layer 21 is 40 g / m 2 Up to 65g / m 2 between.

[0066] In one embodiment, the air permeability of the barrier layer 21 is between 20 cu and 60 cu. For example, the air permeability of the barrier layer 21 can be 20 cu, 25 cu, 30 cu, 35 cu, 40 cu, 45 cu, 50 cu, 55 cu, or 60 cu, etc. Thus, by setting an appropriate air permeability, the aerosol generating article 100 can adjust functions such as the draw resistance, aerosol temperature, and aerosol aggregation.

[0067] It can be understood that air permeability is an indicator used to describe the air permeability of paper. For example, an air permeability of 20cu means that the maximum air permeability allowed per square inch of paper is 20 cubic inches.

[0068] In one embodiment, the leak-proof layer 23 is made of breathable fiber paper. This highly permeable fiber paper effectively regulates air humidity while preventing the infiltration of aerosols and foreign matter. Furthermore, its high strength enhances the longitudinal strength of the cooling section 5 and the filtration section 6, thereby improving the stiffness of the aerosol-generating article 100.

[0069] In one embodiment, the breathable fiber paper is made from broadleaf pulp. Broadleaf pulp fibers are widely available, abundant, and relatively low in cost. Furthermore, broadleaf pulp fibers contain a high concentration of impurities, which imparts durability and stability to paper made from broadleaf pulp fibers, thereby enhancing the strength of the aerosol-generating article 100.

[0070] For example, in one embodiment, the breathable fiber paper may also be hemp pulp fiber paper, coniferous pulp fiber paper or bamboo pulp fiber paper.

[0071] In one embodiment, the air permeability of the anti-leakage layer 23 is no greater than 20cu. For example, the air permeability of the anti-leakage layer 23 can be 0cu, 3cu, 6cu, 9cu, 12cu, 15cu, 18cu, or 20cu, etc. Thus, by providing an anti-leakage layer 23 with an air permeability no greater than 20cu, it is shown that the anti-leakage layer 23 has excellent air permeability, can effectively prevent the outflow of aerosols and liquid after aerosol condensation, and improve the utilization rate of aerosols.

[0072] In one embodiment, the anti-leakage layer 23 has a grammage of 20 g / m 2 Up to 65g / m 2 For example, the weight of the anti-leakage layer 23 can be 20g / m 2 , 25g / m 2 , 30g / m 2 , 35g / m 2 , 40g / m 2 , 45g / m 2 , 50g / m 2 , 55g / m 2 , 60g / m 2 or 25g / m 2 Etc., in this way, by setting a suitable gram weight value, not only can the load capacity of the anti-leakage layer 23 be increased, thereby increasing the anti-breathability effect, but also the overall weight of the aerosol generating product 100 can be reduced, making it easier to carry.

[0073] Exemplarily, in one embodiment, the anti-seepage layer 21 and the anti-leakage layer 23 may not overlap in the transverse direction. In this way, the anti-leakage layer 23 can be first wrapped around the outer peripheral surfaces of the cooling section 5 and the filtration section 6, and then the anti-seepage layer 21 can be wrapped around the supporting section 3, the aerosol generating matrix section 1 and the cleaning section 4, and finally the connecting layer 22 can be wrapped around the outer peripheral surfaces of the anti-seepage layer 21 and the anti-leakage layer 23 to connect them into a whole; the anti-seepage layer 21 and the anti-leakage layer 23 do not overlap in the transverse direction, which can not only reduce the use of the anti-seepage layer 21 and / or the anti-leakage layer 23 and reduce costs, but also avoid the increase of stray gas in the suction process caused by the overlap of the anti-seepage layer 21 and the anti-leakage layer 23.

[0074] It should be noted that the longitudinal direction refers to the direction in which the aerosol-generating substrate segment 1 extends. For example, if the aerosol-generating substrate segment 1 is formed by extrusion, the longitudinal direction is the direction in which the aerosol-generating substrate segment 1 is extruded. The transverse direction intersects the longitudinal direction. For example, the transverse direction may be perpendicular to the longitudinal direction or may be inclined relative to the longitudinal direction (i.e., the angle between the transverse direction and the longitudinal direction is not equal to 90°).

[0075] For example, in one embodiment, the structure of the aerosol generating substrate segment 1 can be integrally formed, for example, formed into a porous structure by extrusion, or can be in the form of a sheet or a filament.

[0076] Another aspect of the present application provides an aerosol generating device for use with the aerosol generating article 100 in any one of the above embodiments. The aerosol generating device includes a heating component for heating the aerosol generating substrate segment 1 to generate an aerosol.

[0077] The heating methods of the heating component include, but are not limited to, resistive heating, electromagnetic heating, infrared heating, microwave heating or laser heating. Transferring heat in the form of thermal convection means that the heating component is not in contact with the aerosol-generating matrix segment 1. The heating component first heats the air, and then the hot air bakes and heats the aerosol-generating matrix segment 1. Thermal conduction means that the heating component is in contact with the aerosol-generating matrix segment 1 and conducts heat to the aerosol-generating matrix segment 1. Exemplarily, resistive and electromagnetic heating mainly transfer heat to the aerosol-generating matrix segment 1 in the form of thermal conduction or thermal convection. Infrared heating, microwave heating or laser heating mainly transfer heat to the aerosol-generating matrix segment 1 in the form of thermal radiation. That is, the heating component can heat the aerosol-generating matrix segment 1 in one or more of the three forms of thermal conduction, thermal convection and thermal radiation.

[0078] In one embodiment, the aerosol-generating substrate segment 1 comprises plant raw materials, auxiliary raw materials, smoke-generating agent raw materials, adhesive raw materials, and flavor raw materials.

[0079] The plant raw material is used to generate aerosols when heated. The auxiliary raw material is used to provide a skeleton support for the plant raw material. The smoke-generating agent raw material is used to generate a large amount of smoke when heated. The adhesive raw material is used to bond the component raw materials. The flavor raw material is used to provide a characteristic aroma. In this way, the plant raw material and the smoke-generating agent raw material can ensure the amount of aerosol generated, while the flavor raw material can enhance the release of aroma during the inhalation process and improve the user experience. The auxiliary raw material can not only improve the fluidity of the mixed material, but also make the aerosol-generating matrix segment 1 porous to facilitate the extraction and flow of the aerosol. The adhesive raw material ensures that the plant raw material powder and the auxiliary agent constitute a stable mixture to avoid a loose structure.

[0080] In one embodiment, the plant raw material is one or more combinations of crushed tobacco leaves, tobacco leaf fragments, tobacco stems, tobacco dust, and flavorful plants, resulting in powder. The plant raw material is the core source of flavor. Endogenous substances in the plant raw material can produce a physiological sense of satisfaction in the user. Endogenous substances, such as alkaloids, enter the human bloodstream and stimulate the pituitary gland to produce dopamine, thereby achieving a physiological sense of satisfaction.

[0081] In one embodiment, the auxiliary agent raw material can be one or more combinations of inorganic fillers, lubricants, and emulsifiers. Inorganic fillers include one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. Inorganic fillers can provide skeletal support for the plant material and also have micropores, which can increase the porosity of the aerosol-generating matrix segment 1, thereby improving the aerosol release rate.

[0082] Lubricants include one or more of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. Lubricants can increase the fluidity of the plant material powder, reduce friction between the plant material powders, and make the overall density of the plant material powder distribution more uniform. They can also reduce the pressure required during the extrusion process and reduce die wear.

[0083] Emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers can, to a certain extent, slow down the loss of flavor substances during storage, increase the stability of flavor substances, and improve the sensory quality of the product.

[0084] In one embodiment, the smoke-generating agent raw material may include: a monohydric alcohol (such as menthol); a polyhydric alcohol (such as propylene glycol, glycerol, triethylene glycol, 1,3-butylene glycol and tetraethylene glycol); an ester of a polyhydric alcohol (such as triacetin, triethyl citrate, a mixture of diacetin esters, triethyl citrate, benzyl benzoate, tributyrin); a monocarboxylic acid; a dicarboxylic 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, a mixture of diacetin esters, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, tributyrin, lauryl acetate) or one or more combinations thereof.

[0085] In one embodiment, the binder material wets the interface of the component materials, resulting in close contact and intermolecular attraction, thereby bonding the component materials, such as powders and liquids. The binder material can be a natural plant extract, a non-ionically modified viscous polysaccharide, or a combination thereof, including tamarind polysaccharide, guar gum, and modified cellulose (e.g., carboxymethyl cellulose). The binder is used to bond the particles together, preventing them from loosening. Furthermore, it improves the water resistance of the aerosol-generating matrix 1 and is harmless to the human body.

[0086] In one embodiment, the flavoring raw materials are solid or liquid substances used to provide characteristic aromas, such as hay, roasted sweet, or nicotine. The flavoring raw materials may include one or more combinations of tobacco, aromatic plant extracts, extracts, essential oils, and absolutes. The flavoring raw materials may also include monomeric flavoring substances, such as one or more combinations of megastigmatrienone, neophytadiene, geraniol, and nerol.

[0087] The following schematically shows a specific embodiment, which is described in detail as follows:

[0088] In the first embodiment, referring to FIG1 , the aerosol generating article 100 includes an aerosol generating matrix section 1, a supporting section 3, a cooling section 5, a filtering section 6, a cleaning section 4, and a wrapping layer 2. The wrapping layer 2 includes an impermeable layer 21, a connecting layer 22, and an anti-leakage layer 23. The impermeable layer 21 wraps around the outer circumference of the aerosol generating matrix section 1, the supporting section 3, and the cleaning section 4. The anti-leakage layer 23 wraps around the outer circumference of the cooling section 5 and the filtering section 6. The impermeable layer 21 is made of 60 g / m 2 The hemp pulp fiber paper is coated with polysaccharide on the inside of the hemp pulp fiber paper, and its air permeability is between 30cu~60cu. The anti-leakage layer 23 is 25g / m 2 The broadleaf pulp fiber forming paper has an air permeability of no more than 20cu. The outer peripheral surface of the anti-leakage layer 23 and the anti-seepage layer 21 is attached with a connecting layer 22, which has a gram weight of 40g / m 2 . The anti-seepage layer 21 can prevent the aerosol generated by the aerosol generating matrix segment 1 during the heating process from condensing and condensing in the aerosol generating matrix segment 1, the supporting segment 3 and the cleaning segment 4 to form external seepage and cause yellow spots, thereby ensuring that the appearance of the aerosol generating product 100 is neat. The anti-leakage layer 23 can prevent the aerosol from flowing out from the outside of the cooling segment 5 and the filtering segment 6, thereby improving the utilization rate of the aerosol. The connecting layer 22 can connect the aerosol generating matrix segment 1 and one section of the supporting segment 3 wrapped with the anti-seepage layer 21 and the other section of the anti-leakage layer 23 wrapped with the cooling segment 5 and the filtering segment 6; flavored additives can also be added to the connecting layer 22 to give the user a better smoking taste; secondly, marks can be printed on the outer peripheral surface of the connecting layer 22 to provide the user with direction identification.

[0089] In the second embodiment, referring to FIG2 , an aerosol generating article 100 includes an aerosol generating matrix section 1, a supporting section 3, a cooling section 5, a filtering section 6, and a wrapping layer 2. The wrapping layer 2 includes an impermeable layer 21, a connecting layer 22, and an anti-leakage layer 23. The impermeable layer 21 wraps around the outer circumference of the aerosol generating matrix section 1 and the supporting section 3, and the anti-leakage layer 23 wraps around the outer circumference of the cooling section 5 and the filtering section 6. The impermeable layer 21 is made of 50 g / m 2 The hemp pulp fiber paper is covered with PLA on the inside of the hemp pulp fiber paper. The air permeability of the anti-seepage layer 21 is between 40cu and 60cu. The anti-leakage layer 23 is 25g / m 2The broadleaf pulp fiber forming paper has an air permeability of no more than 20cu. The outer peripheral surface of the anti-leakage layer 23 and the anti-seepage layer 21 is attached with a connecting layer 22, and the gram weight of the connecting layer 22 is 50g / m 2 . The anti-seepage layer 21 can prevent the aerosol generated by the aerosol generating matrix segment 1 during the heating process from condensing and condensing in the aerosol generating matrix segment 1 and the supporting segment 3 to form external seepage and cause yellow spots, thereby ensuring that the appearance of the aerosol generating product 100 is neat. The anti-leakage layer 23 can prevent the aerosol from flowing out from the outside of the cooling segment 5 and the filtering segment 6, thereby improving the utilization rate of the aerosol. The connecting layer 22 can connect a section of the aerosol generating matrix segment 1 and the supporting segment 3 wrapped with the anti-seepage layer 21 and another section of the anti-leakage layer 23 wrapped with the cooling segment 5 and the filtering segment 6; flavored additives can also be added to the connecting layer 22 to give the user a better smoking taste; secondly, marks can be printed on the outer peripheral surface of the connecting layer 22 to provide the user with direction identification.

[0090] In the third embodiment, referring to FIG3 , an aerosol generating article 100 includes an aerosol generating matrix section 1, a support section 3, a cooling section 5, a filter section 6, and a wrapping layer 2. The wrapping layer 2 includes an impermeable layer 21 and a connecting layer 22. The impermeable layer 21 wraps around the outer circumference of the aerosol generating matrix section 1 and the support section 3. The impermeable layer 21 is made of 55 g / m 2 The hemp pulp fiber paper is covered with PLA on the inside of the hemp pulp fiber paper. The air permeability of the anti-seepage layer 21 is between 20cu and 30cu. The anti-seepage layer 21, the cooling section 5 and the filter section 6 are surrounded by a connecting layer 22. The gram weight of the connecting layer 22 is 50g / m 2 This method can prevent the aerosol generated by the aerosol generating matrix segment 1 during the heating process from condensing and condensing in the aerosol generating matrix segment 1 and the support segment 3 to form external oozing and yellow spots, thereby ensuring the neat appearance of the aerosol generating product 100. The connecting layer 22 can connect the aerosol generating matrix segment 1 and one section of the support segment 3 wrapped with the anti-seepage layer 21 and another section of the anti-leakage layer 23 wrapped with the cooling segment 5 and the filtering segment 6; flavored additives can also be added to the connecting layer 22 to give the user a better inhalation taste; secondly, marks can be printed on the outer peripheral surface of the connecting layer 22 to provide the user with direction identification.

[0091] The main difference between the second and third embodiments is that the third embodiment eliminates the anti-leakage layer 23. When using a highly atomizing agent, such as with a porous aerosol-generating matrix segment 1, an anti-leakage layer 23 is required to prevent aerosol from escaping from the outside of the cooling section 5 and the filtration section 6. When using aerosol-generating matrix segments 1 with less atomizing agent, such as NSC and infrared aerosol-generating matrix segments 1, an anti-leakage layer 23 is not required, thus reducing processing steps and costs.

[0092] The aerosol-generating substrate segment 1 in the first and second embodiments is formed in one piece, for example, by extrusion to form a porous structure, which has low suction resistance, fast flow rate and high aerosol loading. The aerosol-generating substrate segment 1 in the third embodiment is formed in a sheet or filament shape.

[0093] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, and improvements that fall within the spirit and principles of the present application are intended to be within the scope of protection of the present application.

Claims

1. An aerosol generating article comprising: an aerosol generating substrate segment, the aerosol generating substrate segment being used to generate an aerosol; The wrapping layer comprises an impermeable layer and a connecting layer. The outer peripheral surface of the aerosol generating substrate segment is wrapped by the impermeable layer, and the connecting layer is wrapped on the outer peripheral surface of the impermeable layer.

2. The aerosol generating product according to claim 1, comprising a supporting segment, wherein the supporting segment is arranged at one end of the aerosol generating substrate segment in the longitudinal direction, and the outer peripheral surface of the supporting segment is wrapped with the anti-seepage layer.

3. The aerosol generating product according to claim 2 comprises a cleaning section, wherein the cleaning section is arranged at one end of the aerosol generating substrate section away from the supporting section in the longitudinal direction, and the outer peripheral surface of the cleaning section is wrapped with the anti-seepage layer.

4. The aerosol generating product according to claim 2 comprises a cooling section, wherein the cooling section is arranged at one end of the supporting section away from the aerosol generating substrate section in the longitudinal direction, and the outer peripheral surface of the cooling section is wrapped with the connecting layer.

5. The aerosol generating product according to claim 4, comprising a filter segment, wherein the filter segment is arranged at one end of the cooling segment away from the supporting segment in the longitudinal direction, and the outer peripheral surface of the filter segment is wrapped with the connecting layer.

6. The aerosol generating product according to claim 1, comprises at least one of a cooling section and a filtering section, at least one of the cooling section and the filtering section is arranged at one end of the aerosol generating substrate section along the longitudinal direction, the wrapping layer comprises an anti-leakage layer, the outer peripheral surface of the filtering section and / or the cooling section is wrapped with the anti-leakage layer, and the connecting layer is wrapped on the outer peripheral surface of the anti-leakage layer.

7. The aerosol-generating article according to any one of claims 1 to 6, wherein the barrier layer comprises at least one of coated paper and laminated paper, and the working temperature of the barrier layer is not higher than 350°C.

8. An aerosol generating article according to any one of claims 1 to 6, wherein the grammage of the barrier layer is 20 g / m 2 Up to 75g / m 2 between.

9. An aerosol-generating article according to any one of claims 1 to 6, wherein the air permeability of the barrier layer is between 20 cu and 60 cu.

10. The aerosol generating product according to claim 6, wherein the leakage-proof layer is made of air-permeable fiber paper.

11. The aerosol-generating article of claim 9, wherein the air-permeable fiber paper is hardwood pulp fiber paper.

12. The aerosol-generating article according to claim 6, wherein the air permeability of the anti-leakage layer is no greater than 20 cu.

13. The aerosol generating article according to claim 6, wherein the weight of the anti-leakage layer is 20 g / m 2 Up to 65g / m 2 between. The aerosol generating article according to claim 1 , wherein the connecting layer is made of fiber paper or PE.

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