An aerosol-generating article

Abstract

The present application provides an aerosol generating article, comprising an aerosol generating substrate located upstream and a filter section located downstream, the direction extending between the upstream and the downstream being a first direction, the filter section comprising a functional segment and a filter segment, the functional segment being located between the filter segment and the aerosol generating substrate in the first direction, comprising a rigid shell and a flavor body filled in the rigid shell, the peripheral wall of the rigid shell being sealed, and the two end faces opposite in the first direction being provided with air holes. The aerosol generating article of the present application can ensure that the flavor substance is not easy to volatilize in storage, and the release of the flavor substance is more continuous and stable during heating and smoking, and the structure of the obtained aerosol generating article is also more stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of heat-not-burn, in particular to an aerosol generating article. BACKGROUND

[0002] In recent years, aerosol generating articles have attracted the attention of a large number of tobacco consumers due to their low health hazards, and have rapidly risen worldwide, driving a huge change in the world tobacco pattern. As a new type of tobacco, aerosol generating articles provide consumers with nicotine in the form of heat-not-burn. Compared with traditional cigarettes, aerosol generating articles are shorter in length, and the aerosol generating substrate therein is much shorter than the filter segment, which also results in less release of aerosol generating articles than traditional cigarettes, and a relatively low sense of satisfaction of consumers with nicotine. Aerosol generating articles have a relatively richer taste than traditional cigarettes, and flavoring agents are used more frequently, but the flavoring agents added in the aerosol generating substrate dissipate more severely after a period of storage, resulting in a more monotonous taste of the cigarettes after a period of storage, and the taste becomes more obvious as the number of puffs increases during the smoking process, resulting in a decrease in consumer experience. SUMMARY

[0003] The present application provides an aerosol generating article to solve the above technical problems.

[0004] The present application provides an aerosol generating article, comprising an aerosol generating substrate located upstream and a filter portion located downstream, the direction extending between the upstream and the downstream being a first direction, the filter portion comprising a functional segment and a filter segment, the functional segment being located between the filter segment and the aerosol generating substrate in the first direction, comprising a rigid shell and a flavor body filled in the rigid shell, the peripheral wall of the rigid shell being sealed, and the two end faces opposite in the first direction being provided with air holes.

[0005] The above technical solution can ensure that the flavor substance is not easily volatile during storage, and the flavor substance is released more continuously and stably during heating and smoking, and the obtained aerosol generating article has a more stable structure.

[0006] Optionally, the filling volume of the flavor body accounts for 20%-80% of the internal volume of the rigid shell.

[0007] Optionally, the flavor body is a particulate matter loaded with flavor.

[0008] Optionally, the particulate matter is selected from one or more of the following: tobacco particles, heat-sensitive burst bead particles, activated carbon particles, porous cyclodextrin particles, ceramic particles, and water-absorbing silica gel particles.

[0009] Optionally, the cross-sectional area of the particulate matter is greater than the area of the air hole, and the cross-sectional shape of the particulate matter is different from the shape of the air hole.

[0010] Optionally, the particulate matter is spherical, and a diameter R1 of the particulate matter satisfies R1 / R2≥1.2, where R2 is a diameter of the ventilation hole.

[0011] Optionally, the rigid shell is separated by a partition plate into a first chamber and a second chamber distributed along the first direction, the first chamber is located upstream relative to the second chamber, the partition plate is provided with a second ventilation hole, the flavor body includes a first flavor body and a second flavor body, and the first chamber and the second chamber are respectively provided with the first flavor body and the second flavor body which are independent of each other.

[0012] Optionally, a volatilization temperature of the flavor in the first flavor body is greater than a volatilization temperature of the flavor in the second flavor body.

[0013] Optionally, the first flavor body is larger in size than the second flavor body.

[0014] Optionally, the ventilation hole at the upstream end of the rigid shell is a first ventilation hole, and the ventilation hole at the downstream end of the rigid shell is a third ventilation hole, a pore size of the first ventilation hole and the second ventilation hole is greater than a pore size of the third ventilation hole, and the first ventilation hole and the second ventilation hole are 5-15 in number and 0.8-1.6 mm in pore size.

[0015] Optionally, a volume of the first flavor body accounts for 20%-50% of a volume of the first chamber, and a volume of the second flavor body accounts for 30%-80% of a volume of the second chamber.

[0016] Optionally, the first flavor body further includes a cooling particle, and the cooling particle is one or more of a PLA particle, a silica gel particle, and an ammonium chloride particle.

[0017] Optionally, a length of the aerosol generating substrate along the first direction is 10-15 mm, and a volume of the aerosol generating substrate is 0.3-0.7 cm 3 , and a weight of the tobacco material contained in the aerosol generating substrate is 0.2-0.5 g.

[0018] Optionally, a filling density of the tobacco material in the aerosol generating substrate is 0.40-0.80 g / cm 3 , and a void fraction inside the aerosol generating substrate is 30%-60%.

[0019] Optionally, a material of the rigid shell is polylactic acid, polyethylene, polypropylene, or polyacrylate.

[0020] Optionally, the rigid shell includes an outer shell and an inner shell, and the outer shell is nested on an outer wall of the inner shell and is fastened with the inner shell.

[0021] Optionally, the filter portion is composed of the functional segment and the filter segment, or the filter portion is composed of, from upstream to downstream, the cooling segment, the functional segment and the filter segment, the cooling segment being a hollow core material, the hollow core material including acetate tow, propylene tow or polylactic acid tow.

[0022] Optionally, a ratio S1 / S2 of a cross-sectional area S1 of the cavity portion of the cooling segment to a cross-sectional area S2 of the aerosol generating substrate is 0.15-0.8. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A structure diagram of an aerosol generating article according to an embodiment of the present application is shown;

[0024] Figure 2 A structure diagram of an aerosol generating article according to another embodiment of the present application is shown;

[0025] Figure 3A A structure diagram of an outer shell of a rigid shell according to the present application is shown;

[0026] Figure 3B A structure diagram of an inner shell of a rigid shell according to the present application is shown;

[0027] Figure 3C A side view diagram of an outer shell of a rigid shell according to the present application is shown;

[0028] Figure 4 A structure diagram of an aerosol generating article according to still another embodiment of the present application is shown. DETAILED DESCRIPTION

[0029] The specific embodiments of the present application will be described hereinafter by referring to specific embodiments, and other advantages and effects of the present application can be easily understood by those skilled in the art from the contents disclosed in the present specification. Although the description of the present application will be introduced in connection with preferred embodiments, this does not mean that the features of the present application are limited to only the embodiments. On the contrary, the purpose of introducing the present application in connection with the embodiments is to cover other alternatives or modifications which can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the present application, some specific details will be omitted in the description. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0030] The term "aerosol-generating article" is used herein to describe an article comprising smoking material that can be heated to generate and deliver aerosol to a consumer. The term "aerosol generating substrate" means a substrate capable of releasing volatile compounds upon heating to generate an aerosol. During use, volatile compounds are released from the aerosol generating substrate by heat transfer. The aerosol generating substrate can comprise tobacco material containing volatile tobacco flavour compounds that are released from the substrate upon heating. The aerosol generating substrate can comprise non-tobacco material. The aerosol generating substrate can comprise an aerosol former. The aerosol former can comprise at least one of glycerol and propylene glycol. In embodiments where the aerosol generating substrate is solid, the solid aerosol generating substrate can comprise one or more of: a powder, a granule, a pellet, a shard, a cannular, a strip or a sheet, containing one or more of: herbal plant leaves, tobacco leaves, tobacco ribbings, reconstituted tobacco, homogenised tobacco, extruded tobacco and expanded tobacco. The material inside the solid aerosol generating substrate can be in loose form. The aerosol generating substrate can comprise a rod of solid smoking material. The rod of solid aerosol generating substrate can be wrapped in a wrapper, the wrapper comprising paper.

[0031] It should be noted that in the present specification, like numbers and letters refer to like items throughout the several views, and thus, once an item is defined in one view, it should not require further defining and explaining in subsequent views.

[0032] In order to make the objects, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0033] As shown in Figure 1 and Figure 2 , the present embodiment provides an aerosol-generating article, comprising an aerosol generating substrate 1 located upstream and a filter portion 2 located downstream, the direction extending between the upstream and the downstream being a first direction, for example, an x direction in Figure 1 and Figure 2 , the filter portion 2 comprising a functional segment 21 and a filter segment 22, the functional segment 21 being located between the filter segment 22 and the aerosol generating substrate 1 in the first direction. As shown in Figures 3A-3C , the functional segment 21 comprises a rigid shell 3 and a flavour body filled in the rigid shell 3, the peripheral wall of the rigid shell 3 being sealed, the two end faces opposite in the first direction being provided with air holes, for example, a first air hole 33 is provided at the upstream end of the rigid shell 3, and a third air hole is provided at the downstream end. During the smoking process, the smoke generated from the aerosol generating substrate 1 enters the inside of the rigid shell 3 through the first air hole 33, and then flows out from the third air hole, reaches the oral cavity after passing through the filter segment 22.

[0034] The aerosol-generating article of the present application, as a first embodiment, wherein the filter portion 2 is composed of three parts, for exampleFigure 1 The filter section 2, from upstream to downstream, consists of a cooling section 23, a functional section 21, and a filter nozzle section 22. The cooling section 23, the functional section 21, and the filter nozzle section 22 are connected at their ends. The upstream end of the cooling section 23 is connected to the aerosol generating matrix 1, and the downstream end of the cooling section 23 is connected to the functional section 21.

[0035] In the second embodiment, the filter section 2 consists only of a functional section 21 and a filter section 22. The upstream end of the functional section 21 is connected to the aerosol generating matrix 1, and the downstream end is connected to the filter section 22.

[0036] In both the first and second embodiments, the separately configured functional segment 21 is located in the central region of the aerosol-generating product. The outer shell of functional segment 21 is a rigid shell 3, with its peripheral walls sealed, preventing airflow or volatile substances from escaping. The first and third vent holes 33 at both ends of the rigid shell 3 are located on the end walls. The third vent hole is covered by the filter segment 22, while the first vent hole 33 is directly covered (in the second embodiment) or indirectly covered (in the first embodiment) by the aerosol-generating matrix 1. This effectively creates a relatively sealed environment within the rigid shell 3 while allowing airflow. Therefore, when not in use, the fragrance body placed inside the rigid shell 3 experiences significantly reduced volatilization, and during heating and extraction, the fragrance body is not directly exposed to high temperatures, resulting in stable fragrance release and a longer duration of release.

[0037] This invention sets the fragrance body as an independent functional segment 21, which is part of the filter section 2. The fragrance body is filled within the rigid housing 3, rather than being wrapped in packaging paper. This ensures the structural stability of the functional segment 21 and allows the filling volume of the fragrance body to be controlled within a desired range. If packaging paper is used, the fragrance body, as the filling part, needs to be tightly packed, and the filling rate needs to reach a high level to ensure the structural stability of the functional segment 21, which would result in excessive suction resistance. In this embodiment, the fragrance body filling volume accounts for 20%-80% of the internal volume of the rigid housing 3, ensuring that the suction resistance is within a suitable range. Preferably, the fragrance body filling volume accounts for 30%-60% of the internal volume of the rigid housing 3.

[0038] Furthermore, the material of the rigid housing 3 can be selected from polylactic acid, polyethylene, polypropylene, or polyacrylate. The rigid housing 3 includes an outer shell 31 and an inner shell 32, with the outer shell 31 nested within and fastened to the outer wall of the inner shell 32. For example... Figures 3A-3C As shown, the inner shell 32 is mostly embedded within the outer shell 31, with its downstream end protruding and abutting against the outer edge of the outer shell 31. The downstream end has a vent hole, also known as the aforementioned third vent hole. The upstream end of the outer shell 31 has a first vent hole 33. Figure 3CA side view of the rigid housing 3 is shown, which is also a schematic diagram of the first vent 33 at the upstream end.

[0039] Furthermore, in the above embodiments, the flavoring body is a particulate material loaded with flavoring. The particulate material can be spherical or other shapes. For example, it can be tobacco particles, heat-sensitive capsule particles, activated carbon particles, porous cyclodextrin particles, ceramic particles, or water-absorbing silica gel particles, or a mixture of several of these particles. The tobacco particles themselves can serve as the flavoring, or the flavoring can be loaded onto the particles by spraying. The flavoring can be, for example, mint, fruit flavoring, or nicotine can be added as a flavoring.

[0040] Preferably, β-porous cyclodextrin is used as the particulate material. The β-porous cyclodextrin particles are prepared from edible starch, resulting in a particle size distribution between 30 and 50 μm after molding, with a porosity exceeding 75%. Simultaneously, the melting point is around 275℃, allowing it to adsorb a significant amount of fragrance at room temperature and release aroma substances upon heating during inhalation. Maintaining its porous structure, it can also adsorb harmful substances in the flue gas released from the aerosol generating matrix 1, such as NNK, crotonaldehyde, phenol, HCN, ammonia, and BaP. Hygroscopic silica gel particles are used, exhibiting high adsorption performance, good thermal stability, stable chemical properties, and high mechanical strength. Due to the large number of hydroxyl groups on its surface, it can adsorb moisture in the flue gas, thus reducing the flue gas outlet temperature. The above-mentioned particulate material adopts a nanoporous form, achieving a porosity exceeding 50%, specifically reaching 81%. It has a strong ability to adsorb fragrance substances, resulting in a large adsorption capacity, eliminating the need to add fragrance to the aerosol generating matrix 1, and providing a noticeable aroma during inhalation.

[0041] Furthermore, the cross-sectional area of ​​the particulate material serving as the fragrance carrier is larger than the area of ​​the vent. For example, when the particulate material is spherical, its diameter is larger than the diameter of the vent, ensuring that the fragrance body remains inside the rigid shell 3 and does not leak out through the vent. Even further, the cross-sectional shape of the particulate material differs from that of the vent. For example, the particulate material is square, and the vent is circular, or the vent is square, and the particulate material is spherical. Thus, because the cross-sectional shape of the particulate material differs from that of the vent, the particulate material does not tightly block the vent when it comes into contact with it, allowing for smoother airflow. In this embodiment, the vent is circular, and the particulate material is non-spherical, for example, it can be an irregular shape.

[0042] From the perspectives of ease of manufacturing and cost, the vent can be set as a square hole, and the particulate matter can be made into a spherical shape. When the user inhales, the aerosol generating product is placed vertically in the electric heating smoker. At this time, the spherical particulate matter located in the rigid shell 3 will accumulate above the first vent 33 due to gravity. The square first vent (not shown in the figure) is matched with the spherical particulate matter, and the cross-sectional area of ​​the particulate matter is larger than the area of ​​the vent. During the inhalation process, the airflow can flow smoothly from the aerosol generating matrix to the user's mouth, and the spherical particulate matter also has a suitable airway for airflow to pass through in the accumulated state.

[0043] In other embodiments, when the particulate matter is spherical and the vent is also circular, it is preferable that the diameter R1 of the particulate matter and the diameter R2 of the vent satisfy R1 / R2≥1.2. This ensures that the particulate matter does not leak out inside the rigid shell, while also providing suitable suction resistance.

[0044] Furthermore, such as Figure 4 As shown in the above embodiments, a partition 4 is provided inside the rigid housing 3, dividing the rigid housing 3 into a first chamber 41 and a second chamber 42. The first chamber 41 is located upstream of the second chamber 42, and a second vent hole is provided on the partition 4 to allow airflow. The fragrance body includes a first fragrance body and a second fragrance body. The first chamber 41 is filled with the first fragrance body, and the second chamber 42 is filled with the second fragrance body. Thus, a first vent hole 33 is provided at the upstream end of the first chamber 41, a second vent hole is provided on the partition 4, and a third vent hole is provided at the downstream end of the second chamber 42. Airflow passes through the first vent hole 33, the second vent hole, and the third vent hole, respectively, and passes through the filter tip section 22 to reach the user's mouth. The size of the first fragrance body and the second fragrance body is larger than the second vent hole, so that the first fragrance body and the second fragrance body do not cross each other but are respectively enclosed in the first chamber 41 and the second chamber 42.

[0045] Furthermore, the apertures of the first vent 33 and the second vent are larger than the aperture of the third vent. The number of first vents 33 and the second vent is 5 to 15, with apertures ranging from 0.8 to 1.6 mm. Even further, the aperture of the first vent 33 is larger than that of the second vent. When the aerosol generating matrix 1 in the aerosol generating product directly contacts the functional section, the first chamber 41 acts as a cooling chamber, and it is required that as much flue gas generated from the aerosol generating matrix 1 as possible enters the first chamber 41. Therefore, the first chamber 41 serves both as a volatile aroma component release chamber and a cooling chamber. The flue gas first enters the first chamber 41 as much as possible, undergoes sufficient cooling, and then enters the second chamber 42. The second vent can also be provided with a relatively large aperture and number of vents. The study found that by decreasing in size from the first vent 33 to the second and third vents, a more suitable suction resistance can be obtained, while the temperature of the aerosol reaching the oral cavity is more suitable, and the aroma is more pronounced.

[0046] Preferably, the diameter of the third vent is greater than or equal to 0.3 mm, and the number of vents can be one or more. In other embodiments, when the vent is a square hole, the cross-sectional area of ​​the first and second vents is greater than the cross-sectional area of ​​the third vent.

[0047] Furthermore, the volume of the first flavoring agent occupies 20%-50% of the volume of the first chamber 41, and the volume of the second flavoring agent occupies 30%-80% of the volume of the second chamber 42. The 20%-50% filling rate (volume ratio) of the first flavoring agent in the first chamber 41 facilitates greater airflow into the first chamber 41, while the 30%-80% filling rate (volume ratio) of the second flavoring agent in the second chamber 42 allows for more thorough mixing of the airflow with the flavoring, enhancing the aroma of the aerosol ultimately reaching the oral cavity. Even further, the filling rate of the first flavoring agent in the first chamber 41 is lower than the filling rate of the second flavoring agent in the second chamber 42.

[0048] In the above embodiments, the first flavoring body and the second flavoring body can be made of identical particulate matter and flavoring components. The partition 4 increases the temperature difference between the first chamber 41 and the second chamber 42, causing the aroma in the first flavoring body to evaporate more quickly and initially enter the mouth along with the smoke. As heating continues, the second flavoring body in the second chamber 42 evaporates even more, thus increasing the persistence of the flavor throughout the inhalation process. In other embodiments, the first flavoring body and the second flavoring body are different flavoring bodies; they can be made of the same particulate matter as a carrier but with different flavoring components, or they can be made of the same flavoring components but with different particulate matter, or both the particulate matter and the flavoring component can be different. Furthermore, the first and second flavoring bodies themselves can be mixtures of various particulate matter and various flavoring components.

[0049] Specifically, the evaporation temperature of the flavoring in the first flavoring body is higher than that of the flavoring in the second flavoring body. Some flavoring components are more volatile and thus evaporate completely before the temperature reaches its maximum, while for some less volatile flavorings, insufficient temperature results in poor evaporation. Therefore, flavorings with higher evaporation temperatures can be filled in the first chamber 41, and more volatile flavorings can be filled in the second chamber 42. Thus, during inhalation, both the first and second flavoring bodies, located in the first and second chambers 41 and 42 respectively, can evaporate simultaneously, enriching the flavor of the smoke. In more detail, once the flavoring substances to be added to the first and second flavoring bodies are determined, by adjusting the lengths of the first and second chambers 41 and 42, as well as the sizes of the first and second flavoring bodies, and by testing the heating temperature, an effect can be achieved where flavoring substances with different evaporation temperatures evaporate simultaneously and mix evenly with the smoke in each inhalation.

[0050] In the above embodiments, the first flavoring body is larger in size than the second flavoring body, resulting in a lower packing density of the first flavoring body in the first chamber 41 compared to the second flavoring body. This provides more ample space for airflow to flow into the first chamber 41. In conjunction with the above embodiments, it is preferable that the size of the first vent 33 is larger than the size of the second vent, thereby allowing airflow to enter the first chamber quickly and exit from the first chamber 41 relatively slowly. Furthermore, considering the aforementioned ranges in the diameter and number of the first and second vents, and ensuring that the volume of the first flavoring body occupies 20%-50% of the volume of the first chamber 41 and the volume of the second flavoring body occupies 30%-80% of the volume of the second chamber 42, optimal performance can be achieved. Thus, the aerosol-generated product of this embodiment does not require a dedicated cooling section; cooling can be achieved directly through the first chamber 41. Furthermore, since both the first and second chambers 41 and 42 are filled with flavoring bodies, the smoke aroma is richer and more persistent.

[0051] Furthermore, the first fragrance body may also include cooling particles. These cooling particles can be PLA particles, silica gel particles, ammonium chloride particles, etc. The cooling principles of these particles include heat absorption through phase change materials, physical adsorption of water vapor in the flue gas, and heat absorption through chemical reactions between hydrophilic cooling materials and water in the flue gas, thus achieving effective cooling. Additionally, the partition 4 located between the first chamber 41 and the second chamber 42 also plays a cooling role. Compared to a straight-through rigid shell, the blocking effect of the partition 4 further enhances the cooling effect. Furthermore, in this embodiment, the rigid shell 3 is configured as an outer shell 31 and an inner shell 32. The inner shell 32 is embedded within the outer shell 31 to form a chamber for containing the fragrance body. A thin air layer can be formed between the outer shell 31 and the inner shell 32, which also facilitates the cooling of the aerosol.

[0052] In the above embodiments, the length of the corresponding aerosol generating matrix 1 along the first direction is 10-15 mm, and the volume is 0.3-0.7 cm³. 3 The aerosol-generating matrix contains 0.2–0.5 g of tobacco material, resulting in a better taste. Furthermore, in this embodiment, the filling density of the tobacco material in the aerosol-generating matrix 1 is 0.40–0.80 g / cm³. 3 The internal porosity is between 30% and 60%. The aerosol generating matrix 1 can be wrapped with cigarette paper, preferably an airtight material. Using an airtight material as the wrapping paper for the aerosol generating product minimizes the exchange of substances between the product and the external environment, reducing the loss of aroma compounds and minimizing moisture absorption, thus improving the quality of the aerosol generating product after long-term storage.

[0053] In the aerosol generating article of the present invention, in a first embodiment, the filter section 2 is composed of a cooling section 23, a functional section 21, and a filter tip section 22 from upstream to downstream; in a second embodiment, the filter section 2 is composed only of the functional section 21 and the filter tip section 22. In the first embodiment, the cooling section 23 is a hollow core rod, and the ratio S1 / S2 of the cross-sectional area S1 of the cavity to the cross-sectional area S2 of the aerosol generating matrix 1 satisfies 0.15 to 0.8. This ensures that a large amount of airflow passes through the cooling section 23 while providing sufficient support for the aerosol generating matrix, preventing the matrix from detaching from the cigarette paper and entering the cavity of the cooling section 23 when the heating needle is inserted into the aerosol generating matrix 1. The material of the cooling section 23 can be, for example, cellulose acetate tow, polypropylene tow, or polylactic acid tow.

[0054] In the second embodiment, the improvements made to the first chamber 41, the second chamber 42, and the first and second flavoring bodies in the above embodiments achieve multiple functions of cooling, filtering, and flavor enhancement. The same cooling effect can be achieved without a cooling section, and the taste is significantly improved. Furthermore, in the above embodiments, the filter section 22 uses a cellulose acetate filter rod, such as a high-monodenier, low-total-denier, ultra-low-absorption-resistance cellulose acetate filter rod, to minimize aerosol retention in the filter section 22.

[0055] The present invention will now be described using a specific example of an aerosol-generated product.

[0056] Example 1:

[0057] The aerosol-generating matrix has a length of 13.5 mm in the first direction and a total volume of 0.65 cm³. 3 It weighs 0.32g and has a filling density of 0.49g / cm³. 3The porosity is 46%; the cavity shape of the cooling section 23 is circular with an inner diameter of 3.5 mm, and the ratio of the inner diameter to the outer diameter of the aerosol generating matrix is ​​0.45, that is, the ratio of the cross-sectional area S1 of the cavity of the cooling section 23 to the cross-sectional area S2 of the aerosol generating matrix 1 is 0.2; the functional section 21 is a hollow cylindrical shape, injection molded from polylactic acid material, and is composed of a shell 31 and an inner shell 32 nested together, with 9 vent holes at each end, each with a diameter of 1.0 mm. The interior is filled with β-porous cyclodextrin particles loaded with fragrance, with a diameter of 1.2 mm, and the filling volume is 60% of the volume of the rigid shell 3; the filter section 22 uses a high single denier, low total denier ultra-low absorption resistance solid cellulose acetate filter rod. The fragrance substance in the fragrance body of the functional section 21 is peach flavoring.

[0058] Example 2:

[0059] The aerosol generating matrix 1 has a length of 13.5 mm along the first direction and a total volume of 0.65 cm³. 3 It weighs 0.35g and has a filling density of 0.54g / cm³. 3 The porosity is 35%; there is no cooling section; the functional section 21 includes a rigid shell 3, which is a hollow cylindrical shape, injection molded from polypropylene material, and consists of an outer shell 31 and an inner shell 32 nested together. There are 12 vent holes at each end, with a pore size of 0.8 mm. The interior of the shell is filled with flavor-loaded β-porous cyclodextrin particles and water-absorbing silica gel, both with a particle diameter of 1.0 mm, and the two are filled at a volume ratio of 1:1. The total filling volume is 40% of the internal volume of the rigid shell 3; the filter section 22 uses a high single denier, low total denier ultra-low absorption resistance solid cellulose acetate filter rod. The flavoring substance in the flavoring body of the functional section 21 is blueberry flavoring.

[0060] Example 3:

[0061] The aerosol generating matrix 1 has a length of 13.5 mm along the first direction and a total volume of 0.65 cm³. 3 It weighs 0.33g and has a filling density of 0.52g / cm³. 3The porosity is 47%; there is no cooling section; the functional section 21 includes a rigid shell 3, which is a hollow cylindrical shape, injection molded from polylactic acid material, and consists of an outer shell 31 and an inner shell 32 nested together, as well as a partition 4, forming two chambers. The number of holes on the first, second, and third vents are 10, 12, and 15 respectively, with hole diameters of 1.2 mm, 1.0 mm, and 0.8 mm respectively. The particles filled in the first chamber 41 and the second chamber 42 are water-absorbing silica gel particles and β-porous cyclodextrin particles, with particle sizes of 1.5 mm and 1.2 mm respectively. The ratio of the total volume of particles filling the first chamber 41 and the second chamber 42 to the internal volume of the rigid shell 3 is 30% and 50% respectively. The filter section 22 uses a high single denier, low total denier ultra-low absorption resistance solid cellulose acetate filter rod. The flavoring substance in the flavoring body of the functional section 21 is lemon flavoring.

[0062] Comparative Example 1:

[0063] Comparative Example 1 has the same structure as Example 1, except that the peach flavoring is not applied to the particles in functional segment 21, but is filled into the aerosol generating matrix 1.

[0064] Aspiration assessment:

[0065] The aerosol-generated products of Examples 1-3 and Comparative Example 1 were placed in a smoking machine for testing. The heating devices used for the samples were the same, and Cambridge filters were used to capture the total particulate matter in the aerosol. Sensory evaluations were performed on the four samples, and the results are shown in Table 1.

[0066] Table 1 Comparison of total particulate matter and sensory evaluation in several samples of aerosol.

[0067]

[0068] While the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the invention to these descriptions. Various changes in form and detail can be made by those skilled in the art, including several simple deductions or substitutions, without departing from the spirit and scope of the invention.

Claims

1. An aerosol-generating product, characterized in that, The device includes an upstream aerosol generating matrix and a downstream filtration section, with the direction of extension between the upstream and downstream sections defined as a first direction. The filtration section includes a functional section and a filter section. The functional section is located between the filter section and the aerosol generating matrix in the first direction. It includes a rigid shell and a fragrance body filled within the rigid shell. The peripheral wall of the rigid shell is sealed, and ventilation holes are provided on opposite end faces along the first direction. The rigid shell is divided into a first chamber and a second chamber distributed along the first direction by a partition. The first chamber is located upstream of the second chamber. A second ventilation hole is provided on the partition. The fragrance body is a particulate material loaded with fragrance. The fragrance body fills 20%-80% of the internal volume of the rigid shell. The fragrance body includes a first fragrance body and a second fragrance body. The first chamber and the second chamber each contain an independent first fragrance body and a second fragrance body, and the filling rate of the first fragrance body in the first chamber is lower than that of the second fragrance body in the second chamber. The particulate material is spherical, and its diameter R1 and the diameter R2 of the ventilation hole satisfy R1 / R2≥1.

2.

2. The aerosol-generating product as described in claim 1, characterized in that, The particulate matter is selected from one or more of the following: tobacco particles, thermosensitive burst beads, activated carbon particles, porous cyclodextrin particles, ceramic particles, and water-absorbing silica gel particles.

3. The aerosol-generating product as described in claim 1, characterized in that, The cross-sectional shape of the particulate matter is different from the shape of the vent.

4. The aerosol-generating product as described in claim 1, characterized in that, The volatilization temperature of the fragrance in the first fragrance body is higher than that of the fragrance in the second fragrance body.

5. The aerosol-generating product as described in claim 1, characterized in that, The first fragrance body is larger in size than the second fragrance body.

6. The aerosol-generating article as described in claim 5, characterized in that, The vent at the upstream end of the rigid shell is a first vent, and the vent at the downstream end is a third vent. The diameters of the first and second vents are larger than the diameter of the third vent. The number of the first and second vents is 5 to 15, and the diameters are 0.8 to 1.6 mm.

7. The aerosol-generating article as described in claim 6, characterized in that, The volume of the first fragrance body accounts for 20%-50% of the volume of the first chamber, and the volume of the second fragrance body accounts for 30%-80% of the volume of the second chamber.

8. The aerosol-generating article as described in claim 1, characterized in that, The first fragrance body also includes cooling particles.

9. The aerosol-generating article according to any one of claims 1-8, characterized in that, The aerosol generating matrix has a length of 10-15 mm and a volume of 0.3-0.7 cm³ along the first direction. 3 It contains 0.2 to 0.5g of tobacco substances.

10. The aerosol-generating article as described in claim 9, characterized in that, The packing density of tobacco material in the aerosol generating matrix is ​​between 0.40 and 0.80 g / cm³. 3 The internal porosity is between 30% and 60%.

11. The aerosol-generating article according to any one of claims 1-8, characterized in that, The rigid shell is made of polylactic acid, polyethylene, polypropylene, or polyacrylate.

12. The aerosol-generating article according to any one of claims 1-8, characterized in that, The rigid housing includes an outer shell and an inner shell, the outer shell being nested within the outer wall of the inner shell and engaging with the inner shell.

13. The aerosol-generating article according to any one of claims 1-8, characterized in that, The filter section is composed of the functional section and the filter nozzle section, or the filter section is composed of a cooling section, the functional section and the filter nozzle section in sequence from upstream to downstream, wherein the cooling section is a hollow core material.

14. The aerosol-generating article as described in claim 13, characterized in that, The ratio S1 / S2 of the cross-sectional area S1 of the cavity portion of the cooling section to the cross-sectional area S2 of the aerosol generating matrix is ​​0.15~0.8.

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