Aerosol generating article
The aerosol generating article with aerosol capsules and vent holes addresses low smoke and resistance issues in HNB products, ensuring uniform smoke release and improved smoking experience at lower temperatures.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- SHENZHEN HUABAO COLLABORATIVE INNOVATION TECH RES INST CO LTD
- Filing Date
- 2025-02-28
- Publication Date
- 2026-05-21
Smart Images

Figure CN2025079793_21052026_PF_FP_ABST
Abstract
Description
AEROSOL GENERATING ARTICLEThis application claims the benefit of priority to Chinese patent application No. 202411642078.3, filed on November 15, 2024, entitled “Aerosol Generating Article” , the entire disclosures of which are incorporated herein by reference.TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of tobacco products, and more particularly to an aerosol generating article.BACKGROUND
[0002] Heat Not Burn (HNB) , also known as low temperature cigarette, is a novel type of tobacco product that incorporates a heating device and a stick, which is designed with an idea of “only heating but not burning" and is exemplified as “low temperature cigarettes” . The low temperature cigarettes can heat processed reconstituted tobacco (such as, a special stick) utilizing a special heating device (such as, a smoking device) to a certain temperature and to such an extent that the reconstituted tobacco is heated sufficiently to emit smoke for consumption. The HNB has advantages in that it is more harmless and can restore a pure taste and throat sensation of a cigarette, and thus can provide smokers with a nearest alternative to traditional cigarettes.
[0003] HNB product includes a heating device and a HNB stick. The HNB stick generally includes an aerosol generating segment, a cooling segment and a filter segment. The aerosol generating segment is an important part. The aerosol generating segment is heated in a heating chamber and emits smoke similar to traditional cigarettes, and then the smoke passes through the cooling segment and the filter segment for the smokers to inhale.
[0004] In existing HNB stick on the market, the aerosol generating segment can generate smoke mainly using reconstituted tobacco sheets or tobacco shreds as a core material and glycerol or propylene glycol as an aerosol generating agent with addition of flavors and other components through a lower heating temperature (usually<350℃) to achieve a smoking effect. HNB products release fewer harmful substances, and actual heating temperature is significantly lower than traditional tobacco, which results in less smoke release and reduced smoking sensation. To increase smoke amount of the product, the amount of glycerol needs to be increased. However, glycerol itself has good hygroscopicity, which can result in high hygroscopicity of the product and cause great inconvenience for later processing and storage. Moreover, after opening the packaging, the protection of the cigarettes cannot be guaranteed, which can cause uneven smoking of different cigarettes. In addition, the conduction of heat requires a time process, and the smoke amount of the same cigarette at different times is also inconsistent.
[0005] In order to increase the smoke amount, existing technologies have proposed using a capsule encapsulating propylene glycol / glycerol as an aerosol generating substrate, but most related technologies only use the capsule as a part of an aerosol generating material. Some patents also mention using a pure capsule directly as aerosol generating materials and placing the capsule in an aerosol generating substrate segment, where a single capsule is used and there is a need to address a problem of core material outflow after capsule rupture, for example, by absorbing the core material of the capsule using an absorbent pad. However, relevant technical literature has not explicitly proposed how to optimize the structure of smoking tube using the aerosol generating capsule to solve the technical problem of directly using the aerosol generating capsule as the aerosol generating material.SUMMARY OF THE DISCLOSURE
[0006] Therefore, an embodiment of the present disclosure provides a HNB product (also referred to as a heated tobacco product (HTP) , a low-temperature cigarette product, or generically as a heated product) , namely an aerosol generating article, which can increase smoke release amount, decrease heating release temperature, reduce draw resistance and enhance smoking sensation.
[0007] An embodiment of the present disclosure provides an aerosol generating article including an aerosol generating substrate segment. The aerosol generating substrate segment includes an aerosol generating capsule, and a tube corresponding to the aerosol generating substrate segment is provided with a vent hole. The vent hole is configured to allow an air to flow from an outside of the tube to an inside of the tube. The capsule is commonly known as seamless capsule and is typically spherical. By providing the vent hole on the tube corresponding to the aerosol generating substrate segment, additional airflow channel is provided, which can reduce draw resistance. During heating the aerosol generating capsule, the aerosol generating capsule near a heat source is first ruptured. The ruptured aerosol generating capsule may cause collapse and accumulation, and attachment of core liquid may lead to increased draw resistance at a sealed end of the tube. The airflow channel on the tube can compensate for possible airflow losses, which can reduce draw resistance. Moreover, the additional airflow channel is more conducive to heat entering the tube from periphery, which can improve heating efficiency.
[0008] According to some embodiments, the aerosol generating substrate segment is devoid of absorbent material. By omitting the encapsulated liquid core absorption component, the structural complexity of the product is reduced, thereby lowering the manufacturing difficulty for aerosol generating articles.
[0009] According to some embodiments, one end of the aerosol generating article corresponding to the aerosol generating substrate segment is provided with a seal, and a distance between the seal and the vent hole is greater than 1 mm and less than 8 mm, and preferably greater than 3 mm and less than 5 mm. The distance between the vent hole and the seal can be determined based on a height of the aerosol generating substrate segment as long as allowing airflow passing through the vent hole on the tube to flow through the aerosol generating capsule.
[0010] According to some embodiments, a plurality of vent holes are provided.
[0011] According to some embodiments, the number of the plurality of vent holes is greater than or equal to 4.
[0012] According to some embodiments, the plurality of vent holes are distributed in a circumferential direction of the tube. A circumferential distribution, especially uniform distribution, can fully utilize the heat around the tube.
[0013] According to some embodiments, the plurality of vent holes are distributed in rows or columns in a circumferential direction of the tube.
[0014] According to some embodiments, the aerosol generating capsule has a particle size of 1 mm to 3 mm, and preferably 1.5 mm to 2.5 mm. When the smoke release amount is designed to be the same, if the aerosol generating capsule has a too small particle size, then each aerosol generating capsule has a low amount of the core material, and thus, although uniformity of smoke release may be improved, a reduced carrying capacity of an aerosol generating agent may also be caused, and filling void volume fraction may also be reduced, which may both have an adverse effect on smoke release effect. Therefore, an appropriate particle size, especially a moderate particle size, can ensure a good smoking experience, and can also prevent the core material of the aerosol generating capsule with a large particle size flowing out from the aerosol generating article.
[0015] According to some embodiments, the aerosol generating capsule has a filling amount of 0.05 g to 0.5 g. In some embodiments, the aerosol generating capsule has a filling amount of 0.1 g to 0.3 g. At a certain smoke release amount, a higher filling amount may cause a waste of material, and a lower filling amount may reduce aerosol generating continuity, thus a moderate filling amount can ensure a good smoking sensation.
[0016] According to some embodiments, the aerosol generating capsule has a filling amount of 5 capsules to 100 capsules. In some embodiments, the aerosol generating capsule has a filling amount of 15 capsules to 30 capsules. When the smoke release amount is designed to be the same, a lower number of the aerosol generating capsules may lead to too much core material per capsule, which can easily cause the core material to flow out from the aerosol generating article, and a higher number of the aerosol generating capsules may lead to an increase in draw resistance, which will affect smoking experience. Moreover, a moderate filling amount can also ensure a uniform aerosol release.
[0017] According to some embodiments, the aerosol generating substrate segment does not include other aerosol generating materials other than the aerosol generating capsule. Since different aerosol generating materials have inconsistent heating release temperatures, the aerosol generating capsule can release at a lower temperature, and the heating release temperature can be thus further reduced. Using a single type of aerosol generating material, such as an aerosol generating capsule, can employ a lower heating release temperature while maintaining release speed, which can save energy consumption and reduce a potential hazardous component released at a high temperature.
[0018] In the aerosol generating article according to the embodiments of the present disclosure, the aerosol generating substrate segment includes an aerosol generating capsule. Compared with existing products using reconstituted tobacco sheets or tobacco shreds as a core material, the aerosol generating capsule can achieve uniform and sufficient smoke release at lower heating temperatures, which can effectively reduce energy consumption, minimize harmful substance release, and enhance smoking sensation. The vent hole is provided on the tube corresponding to the aerosol generating substrate segment, which can increase air intake in the tube, reduce draw resistance, and further improve smoking experience.BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings are used to provide a clearer understanding of the present disclosure and form a part of the specification. The accompanying drawings are used together with the embodiments of the present disclosure to explain the present disclosure and do not constitute limitations on the present disclosure.
[0020] FIG. 1 schematically illustrates a structural view of an aerosol generating article according to an embodiment of the present disclosure;
[0021] FIG. 2 schematically illustrates a distribution view of vent holes on a tube of the aerosol generating article shown in FIG. 1;
[0022] FIG. 3 schematically illustrates another distribution view of vent holes on a tube of the aerosol generating article shown in FIG. 1;
[0023] FIG. 4 schematically illustrates a structural view of an aerosol generating article according to another embodiment of the present disclosure; and
[0024] FIG. 5 schematically illustrates a distribution view of vent holes on a tube of the aerosol generating article shown in FIG. 4.DETAILED DESCRIPTION
[0025] The principle and spirit of the present disclosure are described below with reference to the exemplary embodiments shown in the accompanying drawings. It should be understood that the described embodiments are provided to allow a person skilled in the art to better understand and thus implement the present disclosure, but not to limit the scope of the present disclosure in any manner. Apparently, the described embodiments are just a part but not all of the embodiments of the present disclosure.
[0026] It should be noted that, unless otherwise defined, all technical and scientific terms used in the description have the same meanings as those commonly understood by those skilled in the art to which the present disclosure belongs. The terms used in the description of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the scope of the present disclosure.
[0027] It should be understood that in the description of the present disclosure, the orientation or position relationship indicated by the terms, such as “center” , “up” , “down” , “front” , “back” , “left” , “right” , “vertical” , “horizontal” , “top” , “bottom” , “inside” and “outside” , is based on the orientation or position relationship shown in the drawings, which is only intended to facilitate the description of the present disclosure and to simplify the description, but not to indicate or imply that the device or element referred to must have a particular orientation or must be constructed and operated in a specific orientation, and therefore cannot be regarded as a limitation of the present disclosure.
[0028] The following terms “first” and “second” mentioned below are only intended for the purpose of description, and shall not be understood as an indication or implication of relative importance or implicit indication of a quantity of indicated technical features. Therefore, the features limited by “first” and “second” may explicitly or implicitly include one or more features. In the descriptions of embodiments of the present disclosure, unless otherwise specified, “aplurality of” means two or more.
[0029] In the description of the present disclosure, it should be noted that the terms “connection” and “connected” should be understood in a broad sense unless explicitly stated and limited otherwise. For example, they may be fixed connections, removable connections, and integral connections. They can be connected directly, or connected indirectly through an intermediate medium, or can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present disclosure may be understood according to specific conditions.
[0030] In the description of the present disclosure, the described specific feature, structure, material or characteristic may be combined in a suitable manner in any one or more embodiments or examples.
[0031] In order to resolve the problem of low smoke amount and difficulty in preservation due to significant environmental impact caused by the use of reconstituted tobacco sheets or tobacco shreds as core materials in the aerosol generating segment of existing HNB product, an embodiment of the present disclosure provides an aerosol generating article, which utilizes aerosol generating capsules to increase the smoke amount of the aerosol generating article. In addition, one or more vent holes are provided on a tube corresponding to the aerosol generating substrate segment, which can effectively enhance the smoking sensation.
[0032] Referring to FIGS. 1, 2 and 3, FIG. 1 schematically illustrates a structural view of an aerosol generating article 10 according to an embodiment of the present disclosure, and FIGS. 2 and 3 schematically illustrate two distribution views of vent holes on a tube of the aerosol generating article 10 shown in FIG. 1.
[0033] In some embodiments, the aerosol generating article 10 includes a tube, and the tube includes an aerosol generating substrate segment 101 formed therein. The aerosol generating substrate segment 101 includes one or more aerosol generating capsules 104. The tube corresponding to the aerosol generating substrate segment 101 is provided with one or more vent holes 106, for example, the number of the vent holes 106 is greater than or equal to 4, so that air can flow from an outside of the tube to an inside of the tube.
[0034] In the aerosol generating article according to the embodiments of the present disclosure, the aerosol generating substrate segment 101 includes the aerosol generating capsules 104. Compared with existing products using reconstituted tobacco sheets or tobacco shreds as core materials, the aerosol generating capsules 104 can achieve uniform and sufficient smoke release amount at lower heating temperatures. Moreover, the tube corresponding to the aerosol generating substrate segment is provided with the vent holes 106, which can reduce draw resistance during heating, and effectively improve smoking experience. In addition, this structure is also more suitable for methods such as hot air convection heating, peripheral resistance heating and peripheral current heating, which is conducive to heat conduction.
[0035] In some embodiments, multiple vent holes 106 may be distributed on the tube corresponding to some or all sections of the aerosol generating substrate segment 101, and can be uniformly or non-uniformly distributed along a circumference direction of the tube. Uniform distribution along the circumference direction of the tube can enable the air flowing into the tube more uniformly, which can provide a smoother smoking sensation.
[0036] In some embodiments, as shown in FIG. 2, the multiple vent holes 106 are uniformly distributed in a circle along the circumference direction of the tube.
[0037] In some embodiments, the multiple vent holes 106 may be distributed in multiple circles along the circumference direction of the tube. As shown in FIG. 3, the multiple vent holes 106 are distributed in two circles along the circumference direction of the tube, which are parallel to each other. Certainly, the multiple vent holes 106 may be distributed in an irregular form along the circumference direction of the tube, and the multiple vent holes 106 may be parallel or aligned with each other, which is not limited by the present disclosure.
[0038] In some embodiments, the area size and shape of the multiple vent holes 106 may be the same or different. For example, the shape of the multiple vent holes 106 may be circular, elliptical, square, diamond-shaped, etc., which is not limited by the present disclosure.
[0039] The length of the tube of the aerosol generating article may be designed to be 30-84 mm, such as 40 mm, 50 mm, 60 mm, 70 mm and 80 mm. The diameter of the tube may be 3.0-10.0 mm, such as 5.0 mm, 6.0 mm, 7.0 mm, 8.0 mm and 9.0 mm. The length of the aerosol generating substrate segment 101 may be less than or equal to the length of the tube. For example, the length of the aerosol generating substrate segment 101 may be 10%to 60%of the total length of the tube.
[0040] For example, the material of the tube may be paper.
[0041] The aerosol generating substrate segment 101 may include one or more aerosol generating capsules 104. Compared with the structure having a single aerosol generating capsule, multiple aerosol generating capsules can provide better smoke release continuity when heated.
[0042] The aerosol generating substrate segment 101 may only include the aerosol generating capsules 104 mentioned above, or may simultaneously include the aerosol generating capsules 104 mentioned above and other aerosol generating materials, which is not limited by the present disclosure.
[0043] The aerosol generating capsules 104 may be tightly or non-tightly filled in the aerosol generating substrate segment 101. A tight filling, for example, may refer to that a loose packing height of vertical natural filling of the aerosol generating capsules in the aerosol generating substrate segment is equal to the length of the aerosol generating substrate segment. A non-tight filling, that is, a loose filling, for example, may refer to that the loose packing height of vertical natural filling of the aerosol generating capsules in the aerosol generating substrate segment is less than the length of the aerosol generating substrate segment. Compared with the tight filling, the non-tight filling of the aerosol generating capsules in the aerosol generating substrate segment can effectively reduce draw resistance during suction and facilitate insertion of a center heating member.
[0044] In some embodiments, the shape of the aerosol generating capsules 104 may be circular, elliptical, etc., and the particle size may be the same or different, which is not limited by the present disclosure. For example, in some embodiments, the particle size of the aerosol generating capsules 104 may be designed to be 1 mm-3 mm. In some embodiments, the particle size of the aerosol generating capsules 104 may be 1.5 mm-2.5 mm, for example, 2.0 mm.
[0045] Depending on different particle size of the aerosol generating capsules 104 and different length of the aerosol generating substrate segment 101, the number or weight of the aerosol generating capsules 104 filled in the aerosol generating substrate segment 101 may also vary. For example, in some embodiments, the filling amount of the aerosol generating capsules 104 is 5-100 particles, and preferably 15-30 particles. In some embodiments, 20 or more particles may be preferred. For example, in some embodiments, the filling amount of the aerosol generating capsules 104 is 0.05 g-0.5 g, and preferably 0.1 g-0.3 g.
[0046] In some embodiments of the present disclosure, the core material of the aerosol generating capsules 104 mainly includes an aerosol generating agent, and the mass proportion of the smoking generating agent in the core material of the aerosol generating capsule may be, for example, 4%to 60%.
[0047] In some embodiments of the present disclosure, the main component of the aerosol generating agent may include Propylene Glycol (PG) and / or Glycerol (VG) . For example, in some embodiments, the component of the aerosol generating agent includes propylene glycol and glycerol accounting for 4 wt %-60 wt%of the weight of the core material. In some specific embodiments, propylene glycol and glycerol may account for 15 wt %-50 wt %of the weight of the core material.
[0048] By combining propylene glycol and glycerol, a lower aerosol release temperature can be achieved while having sufficient smoke release. Using the aerosol generating material encapsulated by a capsule can enable the aerosol generating article to achieve uniform and sufficient smoke release at lower heating temperatures, which can reduce the energy consumption required for heating during suction, reduce the release of harmful substances, and improve the smoking sensation of the smokers.
[0049] Glycerol generates a large amount of smoke and has a sweet taste. The visual effect of smoke generated by propylene glycol is weak, but propylene glycol can have a strong throat sensation. Therefore, in some embodiments, the ratio of propylene glycol to glycerol may be changed to meet the preferences of different smokers. For example, the ratio of glycerol to propylene glycol may be selected in a range of 2: 8 to 8: 2.
[0050] In some embodiments, in order to provide a rich mouthfeel, other components may also be added to the core material of the aerosol generating capsules 104. For example, the core material may also include but is not limited to any one or more of the following components: flavor, extract, nicotine, nicotine salt, etc. The component and proportion of the aerosol generating agent in the aerosol generating capsules 104 may be the same or different, which is not limited by the present disclosure. The extract may be animal extract or plant extract, such as musk, ambergris, tea extract and momordica grosvenorii extract. The taste may be adjusted as required.
[0051] In some embodiments, the core material of the aerosol generating capsules 104 may further include a lipophilic formulation and a structuring agent. The core material formed by propylene glycol and glycerol, the lipophilic formulation and the structuring agent is in the form of a colloid, a paste or a solid-liquid mixture at room temperature (25℃) , which can facilitate the stable encapsulating of the core material by a shell of the aerosol generating capsules 104.
[0052] It should be noted that the lipophilic formulation and the structuring agent in the core material are used to encapsulate the aerosol generating agent and other components. In order to encapsulate the aerosol generating agent and other components in the core material, other encapsulation methods in existing technology can also be used, such as photo curing droplet method, coating rounding method, frozen coating method and coagulation method.
[0053] In some embodiments, the material of the shell of the aerosol generating capsules 104 may include, but is not limited to, any one or more of following gelling agents: plant gel, animal gel, microbial gel, starch, modified starch materials, etc. The animal gel may be gelatin, fish gel, chitosan, etc., and the plant gel may be carrageenan, sodium alginate, gellan gum, tamarind gum, etc.
[0054] In order to facilitate the shaping during processing, the material of the shell may further include a curing agent. The curing agent may be a polyol, such as glycerol and sorbitol.
[0055] In some embodiments, the material of the shell may further include a reinforcing agent, such as a metal salt, specifically calcium chloride, potassium chloride, calcium carbonate, calcium phosphate, and monocalcium phosphate.
[0056] The thickness of the shell of the aerosol generating capsules 104 may be designed to be 30 μm -150 μm.
[0057] The shell of the aerosol generating capsules 104 may be ruptured at a certain heating temperature, which causes the core material to release and generate aerosols. The release temperature of the aerosol generating capsules 104 is usually lower than the smoke generating temperature of reconstituted tobacco sheets or tobacco shreds added with aerosol generating agents such as glycerol and propylene glycol. In some embodiments, the heating release temperature of the aerosol generating article may be 180℃-300℃. In some embodiments, the heating release temperature of the aerosol generating article may be 200℃-250℃. Compared with existing HNB products, the aerosol generating article according to the embodiments of the present disclosure can reduce the waiting time from heating to smoking.
[0058] In some embodiments, in order to enhance different mouthfeels, one or more auxiliary material capsules may be added to the aerosol generating substrate segment 101. That is to say, the aerosol generating substrate segment 101 includes the aerosol generating capsules 104 mentioned above and the auxiliary material capsules. In some embodiments, the auxiliary material capsules may include any one or more of the following: flavor capsule, extract capsule, nicotine capsule, nicotine salt capsule, etc.
[0059] In some embodiments, the volume ratio of the auxiliary material capsules to the aerosol generating capsules 104 in the aerosol generating substrate segment 101 may be 10: 1-1:10, which can better meet personalized needs of different smokers for suction taste.
[0060] In some embodiments, the material of the shell, particle size and shape of the auxiliary material capsules may be the same or different from the material of the shell, particle size and shape of the aerosol generating capsules 104, which is not limited by the present disclosure. In addition, the distribution of the auxiliary material capsules and the aerosol generating capsules 104 in the aerosol generating substrate segment 101 may be uniform or non-uniform, which is not limited by the present disclosure.
[0061] Referring to FIGS. 1 and 2, in some embodiments, the aerosol generating article may further include a limiting part 102 and / or a filter segment 103.
[0062] One end of the limiting part 102 is adjacent to the aerosol generating substrate segment 101 along an airflow direction, which can restrict the aerosol generating capsules 104 in the aerosol generating substrate segment 101 from passing through. The other end of the limiting part 102 may be adjacent to or spaced a certain distance from the filter segment 103.
[0063] In some embodiments, the limiting part 102 may be a prefabricated component with a through hole, or a structural component such as a rolled sheet member. The material of the limiting part may include, but is not limited to, any one of the following: plant fiber, resin, metal, etc. On the one hand, the through hole can reduce the draw resistance, and on the other hand, the through hole can also prevent the aerosol generating capsules 104 from passing through. The material of the rolled sheet member may include, but is not limited to, any one of the following: paper, resin sheet (such as polylactic acid sheet) and metal sheet.
[0064] The limiting part 102 can not only limit the aerosol generating capsules 104, but also prevent the aerosol generating capsules 104 from falling off from the aerosol generating substrate segment 101. If necessary, the limiting part 102 can also have a cooling effect on the smoke to avoid excessive temperature of the smoke.
[0065] The filter segment 103 is provided at the other end of the tube and may be adjacent to or spaced a certain distance from the limiting part 102.
[0066] In some embodiments, the filter segment 103 may also be directly adjacent to the other end of the aerosol generating substrate segment 101, that is, the limiting part 102 may not be provided. In this structure, the filter segment 103 can not only filter smoke, but also limit the aerosol generating capsules 104 in the aerosol generating substrate segment 101 to prevent the aerosol generating capsules 104 from falling off from the aerosol generating substrate segment 101.
[0067] In some embodiments, the filter segment 103 may include one or more filter members. Various filter members can be sequentially connected along an axial or radial direction of the filter segment. The filter members may be a solid, hollow, or porous filter rod, which is not limited by the present disclosure. The filter rod may be formed by processing one or more fibers.
[0068] In some embodiments, as shown in FIGS. 1 and 2, a seal 105 is provided at one end of the aerosol generating substrate segment 101 adjacent to one end of the tube. The seal 105 may be formed of paper, non-woven fabric, fabric, etc., and may be directly adhered to one end face of the aerosol generating substrate segment.
[0069] Referring to FIGS. 4 and 5, FIG. 4 schematically illustrates a structural view of an aerosol generating article 20 according to another embodiment of the present disclosure, and FIG. 5 schematically illustrates a distribution view of vent holes on a tube of the aerosol generating article 20 shown in FIG. 4.
[0070] In some embodiment, the aerosol generating article 20 includes a tube, and the tube includes an aerosol generating substrate segment 201, a limiting part 202 and a filter segment 203. The aerosol generating substrate segment 201 includes one or more aerosol generating capsules 204, and one or more vent holes 206 are provided on the tube corresponding to the aerosol generating substrate segment 201.
[0071] The above aerosol generating substrate segment 201, the limiting part 202, the filter segment 203 and the aerosol generating capsule 204 are similar to the aerosol generating substrate segment 101, the limiting part 102, the filter segment 103 and the aerosol generating capsule 104 in FIG. 1. More details may refer to the description of above embodiments, which will not be repeated here.
[0072] In the embodiment shown in FIG. 4, a seal 205 is provided at one end of the aerosol generating substrate segment 201 adjacent to one end of the tube. The seal 205 may be formed of a thermally conductive material, for example, metal foil, such as aluminum foil and tin foil, which can increase thermal conductivity and reduce heating waiting time during suction. Except for specific embodiments, the seal 205 is generally permeable or has permeable holes to ensure that airflow can enter the aerosol generating article. For example, the seal 205 is provided with multiple permeable holes.
[0073] In other embodiments, the seal may also be an acetate fiber rod or a cotton rod, sealed at the end of the aerosol generating substrate segment adjacent to one end of the tube.
[0074] In some embodiments, a thermally conductive layer may also be provided on an inner surface of the tube in a section corresponding to the aerosol generating substrate segment, which can increase heat conductivity and reduce heating waiting time during suction.
[0075] In some embodiments, in order to facilitate production and improve flame retardant effect, the thermally conductive layer may also be provided on the entire surface of the tube.
[0076] The thermally conductive layer may be formed of materials such as aluminum foil, which not only provides thermal conductivity but also has flame retardant properties.
[0077] The aerosol generating capsules according to the embodiments of the present disclosure can be prepared by various methods, such as the following method, and the like.
[0078] 40 weight parts of sunflower seed oil is heated to 100℃, and then, 7.1 weight parts of ethyl cellulose, 1.4 weight parts of beeswax, and 2.1 weight parts of palm wax are added therein while stirring, dissolved, and mixed well. Thereafter, the mixture is cooled to 60℃, and 24 weight parts of propylene glycol, 16 weight parts of glycerol, 2.4 weight parts of surfactant (prepared by Tween 80 and glycerol monooleate in a weight ratio of 1: 9) , 5 weight parts of mango flavor, and 2 weight parts of nicotine salt are added therein and stirred well, to complete preparation of the core material.
[0079] 5 weight parts of carrageenan and 3 weight parts of gellan gum are put into 82 weight parts of purified water, and heated at a temperature of 60℃ to 90℃ while stirring, to form a uniform solution. And then, 10 weight parts of glycerol is added and stirred well, to prepare a shell liquid.
[0080] The core material (inner layer) and the shell liquid are dropped into a liquid coolant (Medium-Chain Triglycerides, MCT) through a concentric dropper at a temperature controlled at 10℃ to 25 ℃, to form a wet capsule. Then, the wet capsule is stored at -10℃ to 10℃ for 10 hours, and dried at 20℃ to 30℃ and 20%to 50%humidity, to prepare a capsule article with a particle size of 2 mm and a shell thickness of 70 μm.
[0081] The aerosol generating article according to the embodiments of the present disclosure may have different manufacturing methods according to different structures.
[0082] For example, one manufacturing method is as follows: preparing a paper tube with an outer diameter of 9.0 mm and a length of 45 mm, and a bottom end is sealed. Vent holes are formed in an area 10mm away from the sealed end. Then, 0.2 g aerosol generating capsule is filled from an open end, and 28mm hollow acetate fiber filter rod is filled.
[0083] For example, one manufacturing method is as follows: preparing a paper tube with an outer diameter of 9.0 mm and a length of 45 mm, and two ends are not sealed. Vent holes are formed in an area 10mm away from an end of the tube. Then, 7mm acetate fiber rod, 0.2 g aerosol generating capsule, and 23mm hollow acetate fiber filter rod are filled in sequence.
[0084] The aerosol generating article according to the embodiments of the present disclosure has strong universality and can be adapted to various heating devices, such as needle heating devices, plate ceramic heating devices, air heating devices, and microwave heating devices.
[0085] In some embodiments, a susceptor may also be installed in the aerosol generating substrate segment to adapt to electromagnetic induction heating devices.
[0086] When preparing the aerosol generating article according to the embodiments of the present disclosure, different tastes and suction effects can be produced by adjusting parameters such as the length of the aerosol generating substrate segment, the void volume fraction and the particle size of the aerosol generating capsules to meet the needs and experiences of different smokers.
[0087] To further verify the smoking experience of products with different design parameters, a comparative test is conducted on the products with and without vent holes on the tube corresponding to the aerosol generating substrate segment as follows:
[0088] Two groups of aerosol generating articles adopt the same structural design parameters, and the aerosol generating substrate segment is filled with the aerosol generating capsules of the same particle size and quantity. The filling height ratio (i.e., the ratio of a loose packing height of the stacked aerosol generating capsules to the length of the aerosol generating substrate segment when the aerosol generating article is placed in a vertical direction) is the same. The difference is that the first group of aerosol generating articles does not have vent holes on the tube corresponding to the aerosol generating substrate segment, while the second group of aerosol generating articles has 21 vent holes with a diameter of 0.08mm at a position 5mm away from the end on the tube corresponding to the aerosol generating substrate segment.
[0089] The above two groups of aerosol generating articles are tested regarding draw resistance testing and sensory evaluation. The test data are shown in Table 1:
[0090] Table 1
[0091] In above test, regarding smoke amount, aroma quality, stability, satisfaction, aftertaste and oral residue, the best score is 10 points, and the worst score is 0 points.
[0092] From above test results, it can be seen that the structural design of providing vent holes on the tube corresponding to the aerosol generating substrate segment can achieve lower draw resistance, stronger smoke amount and better smoking experience for the aerosol generating article during suction.
[0093] Although the present disclosure has been disclosed above, the present disclosure is not limited thereto. Any changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure, and the scope of the present disclosure should be determined by the appended claims.
Claims
1.An aerosol generating article, comprising an aerosol generating substrate segment, wherein the aerosol generating substrate segment comprises an aerosol generating capsule, and a tube corresponding to the aerosol generating substrate segment is provided with a vent hole, wherein the vent hole is configured to allow an air to flow from an outside of the tube to an inside of the tube.2.The aerosol generating article according to claim 1, wherein one end of the aerosol generating article corresponding to the aerosol generating substrate segment is provided with a seal, and a distance between the seal and the vent hole is greater than 1 mm and less than 8 mm, and preferably greater than 3 mm and less than 5 mm.3.The aerosol generating article according to claim 1, wherein a plurality of vent holes are provided.4.The aerosol generating article according to claim 3, wherein the number of the plurality of vent holes is greater than or equal to 4.5.The aerosol generating article according to claim 3, wherein the plurality of vent holes are distributed in a circumferential direction of the tube.6.The aerosol generating article according to claim 3, wherein the plurality of vent holes are distributed in rows or columns in a circumferential direction of the tube.7.The aerosol generating article according to claim 1, wherein the aerosol generating capsule has a particle size of 1 mm to 3 mm, and preferably 1.5 mm to 2.5 mm.8.The aerosol generating article according to claim 1, wherein the aerosol generating capsule has a filling amount of 0.05 g to 0.5 g, and preferably 0.1 g to 0.3 g.9.The aerosol generating article according to claim 1, wherein the aerosol generating capsule has a filling amount of 5 capsules to 100 capsules, and preferably 15 capsules to 30 capsules.10.The aerosol generating article according to claim 1, wherein the aerosol generating substrate segment does not comprise aerosol generating materials other than the aerosol generating capsule.