An aerosol generating product

Abstract

The present invention relates to an aerosol generating product, comprising an aerosol generating substrate; a first portion having a first cavity extending through the first portion in a first direction; a second portion having a second cavity extending through the second portion in the first direction, the first cavity and the second cavity being in communication; a third portion, wherein the aerosol generating substrate, the first portion, the second portion, and the third portion are sequentially arranged along the first direction, and an aerosol generated by heating the aerosol generating substrate by a heating body can sequentially pass through the first portion, the second portion, and the third portion; a pressure drop of the aerosol generating substrate is P D 1. The total pressure drop of the first, second and third parts is P D 2, where 0.5≤P D 1 / P D 2≤5. The aerosol-generating article of the present invention has a good smoking effect when releasing aerosol.

Description

Technical Field

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

[0002] In recent years, aerosol-generating products have captured the attention of tobacco consumers and are rapidly gaining popularity worldwide, driving significant changes in the global tobacco landscape. As a new type of tobacco, aerosol-generating products, whose aerosol-forming substrate, such as tobacco, is heated rather than burned, have attracted significant attention for their significant advantage in reducing the release of harmful substances.

[0003] Currently, heat-not-burn cigarette products mainly consist of two parts: the cigarette and the heating device. The appearance of the cigarette is basically the same as that of ordinary cigarettes, which meets the characteristics of heat-not-burn cigarettes, but requires carrying a heating device, which brings inconvenience to consumers.

[0004] There is also a new type of tobacco product, in which the cigarette itself has a heating source, making it easy to carry. Existing self-heating non-burning cigarettes include a self-heating source and a tobacco matrix, wherein the self-heating source is located at the end of the cigarette, such as charcoal, and the tobacco matrix and self-heating source are wrapped in cigarette paper. The cigarette paper includes aluminum foil and a heat-not-burn paper layer, wherein the aluminum foil wraps the tobacco matrix and self-heating source, and the paper layer wraps the aluminum foil. After the charcoal is ignited, the aluminum foil transfers heat to the tobacco matrix. The tobacco matrix does not burn, but its internal volatile components are released and condensed into atomized aerosols for inhalation.

[0005] The prior art records improved cigarette paper for heat-not-burn cigarettes. For example, Chinese patent document CN104452479B discloses a composite cigarette paper. Cigarettes made with this cigarette paper have an appearance similar to existing cigarettes. During inhalation, the heat generated by the burning outer layer of cigarette paper heats the tobacco through the aluminum foil layer. The aroma components and volatile components such as nicotine produced by the heated and volatilized tobacco enter the mouth during inhalation, thus becoming a unique new type of low-temperature non-combustion tobacco product.

[0006] For example, Chinese patent document CN204224923U discloses a cigarette paper with a certain thickness, high air permeability and high grammage. Aluminum foil is then compounded on the cigarette paper with a binder, and then laser, electrostatic or mechanical punching is performed, so that the cigarette made with the cigarette paper looks similar to existing cigarettes. After the cigarette is rolled and formed, the aluminum foil layer is in direct contact with the tobacco. When ignited, the combustion and heating of the cigarette paper layer transfer the aluminum foil to the tobacco. The flavor components and volatile components such as nicotine generated by the heated and volatilized tobacco enter the oral cavity during inhalation, thus forming a unique new tobacco product.

[0007] The main issues with aerosol-generating products are low smoke production and high aerosol temperatures. This is primarily due to two factors: First, aerosol-generating products heat at a lower temperature than traditional cigarettes, resulting in a higher perceived temperature due to their higher water content. Second, their shorter length shortens the aerosol pathway, leading to higher inlet aerosol temperatures. Conventional cigarettes, with their conventional solid acetate tow, have a high aerosol retention rate, resulting in low emissions from aerosol-generating products, impacting the consumer experience. Summary of the Invention

[0008] The problem solved by the present invention is that aerosol-generating products have poor aerosol smoking effects and consumers have poor smoking experience.

[0009] In order to solve the above problems, the present invention aims to provide an aerosol-generating product, comprising: an aerosol-generating substrate; a first portion having a first cavity extending through the first portion along a first direction; a second portion having a second cavity extending through the second portion along the first direction, the first cavity and the second cavity being connected; a third portion, wherein the aerosol-generating substrate, the first portion, the second portion, and the third portion are arranged in sequence along the first direction, and an aerosol generated by heating the aerosol-generating substrate by a heating body can pass through the first portion, the second portion, and the third portion in sequence; the pressure drop of the aerosol-generating substrate is P D 1, the total pressure drop of the first part, the second part and the third part is P D 2, where 0.5≤P D 1 / P D 2≤5.

[0010] With this solution, the aerosol-generating substrate is heated by the heater to generate an aerosol, which then flows sequentially through the first cavity, the second cavity, and the third portion before being inhaled by the user. Within the aforementioned pressure drop ratio range, the aerosol-generating article effectively enhances the aerosol's smoking effect, providing a superior user experience.

[0011] The term "aerosol-generating article" is used herein to describe an article comprising an aerosol-forming substrate that can be heated to generate an aerosol and deliver it to a consumer. The term "aerosol-forming substrate" means a substrate that is capable of releasing volatile compounds upon heating to generate an aerosol. During use, the volatile compounds are released from the aerosol-forming substrate by heat transfer. The term 'aerosol-forming substrate' means consisting of or comprising an aerosol-forming substrate that is capable of releasing volatile compounds upon heating to generate an aerosol. The aerosol-forming substrate may be a solid aerosol-forming substrate. The aerosol-forming substrate may comprise a tobacco-containing material containing volatile tobacco flavour compounds that are released from the substrate upon heating. The aerosol-forming substrate may comprise a non-tobacco material. The aerosol-forming substrate may comprise an aerosol-former. The aerosol-former may comprise at least one of glycerol and propylene glycol. In embodiments where the aerosol-forming substrate is a solid aerosol-forming substrate, the solid aerosol-forming substrate may comprise one or more of a powder, granules, pellets, shreds, stem tubes, strips or sheets containing one or more of herb leaves, tobacco leaves, tobacco ribs, reconstituted tobacco, homogenised tobacco, extruded tobacco and expanded tobacco. The solid aerosol-forming substrate may be in loose form. The aerosol-forming substrate may comprise a rod of solid aerosol-forming substrate. The wrapper may enclose the rod of solid aerosol-forming substrate.

[0012] In some possible implementations, the third portion is a non-cavity structure.

[0013] In some possible implementations, 100 Pa ≤ P D 1≤300Pa.

[0014] In some possible implementations, 100 Pa ≤ P D 1≤200Pa.

[0015] In some possible embodiments, P D 2≤250Pa.

[0016] In some possible embodiments, P D 2≤100Pa.

[0017] In some possible implementations, an outer surface of the second portion is provided with a through-hole communicating with the second cavity.

[0018] In some possible implementations, the outer surface of the second portion is provided with one or more rows of perforation groups, and each row of the perforation groups includes a plurality of the perforations.

[0019] In some possible implementations, the number of the perforations is N, where 1≤N≤10.

[0020] In some possible implementations, 2≤N≤8.

[0021] In some possible implementations, the equivalent diameter of the perforation is D, wherein 0.1 mm ≤ D ≤ 0.5 mm.

[0022] In some possible implementations, 0.1 mm ≤ D ≤ 0.4 mm.

[0023] In some possible implementations, the first cavity is a body with a constant cross-section, and the second cavity is a body with a constant cross-section.

[0024] In some possible implementations, the equivalent diameter of the first cavity is D1, the equivalent diameter of the second cavity is D2, and 1≤D2 / D1≤3.

[0025] In some possible implementations, the equivalent diameter of the first cavity is 2 mm to 4 mm.

[0026] In some possible implementations, the equivalent diameter of the second cavity is 4 mm to 6 mm.

[0027] In some possible implementations, both the first part and the second part are filter rods.

[0028] In order to make the above contents of the present invention more clearly understood, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the structure of an aerosol generating article according to an embodiment of the present invention;

[0030] Figure 2 4 is a graph showing the puffing temperature test results of an aerosol-generating article according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] The following is an explanation of the embodiments of the present invention by specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiment is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will contain many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0032] refer to Figure 1 The present invention provides an aerosol generating article, comprising: a device for generating an aerosol in a first direction ( Figure 1 The aerosol-generating substrate 1, the first portion 2, the second portion 3, and the third portion 4 are sequentially arranged (as shown in the X direction). For example, the aerosol-generating substrate 1 includes, but is not limited to, tobacco substances, atomizers, and flavoring substances. The tobacco substances include, but are not limited to, shredded tobacco, shredded tobacco sheets, tobacco particles, and combinations thereof.

[0033] The order in which the aerosol-generating substrate 1, first portion 2, second portion 3, and third portion 4 are combined during the manufacturing process is not limited. For example, the first portion 2, second portion 3, and third portion 4 are first formed into a single body, and then combined with the aerosol-generating substrate 1 to form the aerosol-generating article. In some possible embodiments, the aerosol-generating substrate 1 and first portion 2 are combined to form a first combined body, the second portion 2 and third portion 3 are combined to form a second combined body, and the first and second combined bodies are then connected to form the aforementioned aerosol-generating article.

[0034] Illustratively, along the first direction, the aerosol-generating substrate 1 abuts against the first portion 2. Illustratively, along the first direction, the first portion 2 abuts against the second portion 3. Illustratively, the second portion 3 abuts against the third portion 4. Illustratively, along the first direction, both ends of the first portion 2 abut against the aerosol-generating substrate 1 and the second portion 3, respectively, and both ends of the second portion 3 abut against the first portion 2 and the third portion 4, respectively.

[0035] The aerosol-generating substrate 1, the first portion 2, the second portion 3, and the third portion 4 are wrapped in a wrapping material, such as aluminum foil, to form an aerosol-generating product. The aerosol-generating product is cylindrical, and the direction of extension of the aerosol-generating product is aligned with the first direction. Illustratively, the aerosol-generating substrate 1 is a solid aerosol-forming matrix containing tobacco components. The aerosol-generating product does not produce combustion during operation, significantly reducing the release of large amounts of harmful substances caused by high-temperature combustion. Illustratively, the outer wrapping material of the aerosol-generating product is an airtight material. In some possible embodiments, no wrapping paper is required.

[0036] Exemplarily, the first part 2, the second part 3, and the third part 4 are made of acetate fiber. Exemplarily, the first part 2, the second part 3, and the third part 4 are all filter rods. Exemplarily, the second part 3 is a hollow tube that serves as a support.

[0037] Specifically, the first portion 2, the second portion 3, and the third portion 4 constitute the filter portion of the aerosol-generating article. The filter portion primarily functions to reduce the release of harmful substances and lower the aerosol temperature. For example, the filter portion can effectively reduce the release of harmful substances such as NNK, crotonaldehyde, phenol, HCN, ammonia, and BaP. Simultaneously, the filter portion also minimizes the capture of flavoring substances, nicotine, and other substances.

[0038] In this embodiment, the aerosol-generating substrate 1 is inserted into a heating element (not shown) to generate an aerosol for inhalation by the user. The end of the third portion 4 not connected to the second portion 3 serves as the inhalation end. The first portion 2 has a first cavity 21 extending along a first direction through the first portion 2; the second portion 3 has a second cavity 31 extending along the first direction through the second portion 3; the third portion 4 is a non-cavity structure; the first cavity 21 and the second cavity 31 are interconnected. For example, this non-cavity structure means that the third portion 4 does not include a cavity extending along the first direction.

[0039] The aerosol generating substrate 1 is heated by the heating body to generate an aerosol, which flows through the aerosol channel and is then inhaled by the user. That is, the aerosol flows through the first cavity 21, the second cavity 31, and the third cavity 41 in sequence and is then inhaled by the user, which can effectively enhance the smoking effect of the aerosol released by the aerosol generating product.

[0040] In this application, the pressure drop of the aerosol generating substrate is P D 1, the total pressure drop of the first part 2, the second part 3 and the third part 4 is P D 2, that is, the total pressure drop of the filter part is P D 2. For example, when a user inhales the aerosol-generating article of the present application, the pressure drop of the aerosol-generating substrate is P D 1, the total pressure drop of the first part 2, the second part 3 and the third part 4 is P D 2, that is, the total pressure drop of the filter part is P D 2. Among them, 0.5≤P D 1 / P D 2≤5. The aerosol-generating matrix 1 provides sufficient tobacco material, while the filter portion (first portion 2, second portion 3, and third portion 4) intercepts harmful substances, reduces the aerosol temperature, and delivers the tobacco material to the consumer. The pressure drop between the aerosol-generating matrix 1 and the filter portion (first portion 2, second portion 3, and third portion 4) is designed to be within the aforementioned pressure drop parameter ratio range, achieving a synergistic effect of aerosol atomization and temperature reduction.

[0041] When P D 1 / P D2 is too small, that is, when the material and structure of the filter part remain unchanged, the resistance of the gas flowing through the aerosol generating matrix 1 under corresponding conditions is too small, the total amount of tobacco material in the corresponding aerosol generating matrix 1 is too small, and the tobacco material in the corresponding aerosol generating matrix is ​​piled up and fluffy, which is more likely to cause quality defects such as loosening or collapse of the tobacco matrix, and will also reduce the total amount of aerosol components and the corresponding aerosol amount released by the aerosol generating product, affecting the consumer's smoking experience.

[0042] When P D 1 / P D 2 is too large, that is, when the material and structure of the filter part remain unchanged, the resistance of the gas flowing through the aerosol generating matrix 1 under the corresponding conditions is large, the corresponding aerosol generating matrix 1 has too much tobacco material, the filling is too dense, and the overall heating condition of the tobacco matrix is ​​poor. In addition, given the characteristics of the perforated filter part in this application, when the consumer inhales, more air will enter from the filter perforations with smaller resistance, diluting the concentration of tobacco material in the aerosol, which also affects the consumer's smoking experience.

[0043] Therefore, 0.5≤P D 1 / P D The design of 2≤5 can better achieve the puffing experience of aerosol-generating products.

[0044] Exemplarily, the test method for the above-mentioned pressure drop is as follows: in accordance with the requirements of the national standard GB / T 22838, the sample to be tested is completely sealed in the measuring equipment to ensure that there is no air leakage. When a stable airflow passes through the sample and the output end flow rate is 17.5 mL / s under standard conditions, the static pressure difference at both ends of the sample is measured.

[0045] In some possible implementations, 100 Pa ≤ P D 1≤300Pa. In some possible implementations, 100Pa≤P D 1≤200Pa. In some possible implementations, P D 2≤250Pa. In some possible implementations, P D 2≤100Pa.

[0046] The materials used for the first part 2, the second part 3 and the third part 4 are not limited to acetate tow, polypropylene tow, polylactic acid tow, paper and polymer. D 2 is within the above parameters.

[0047] In some possible embodiments, perforating the cavity portion of the aerosol-generating article (e.g., the first cavity 21 and the second cavity 31) can effectively reduce the temperature of the aerosol at the outlet of the aerosol-generating article. During the consumer's puffing process, air enters the aerosol-generating article through the small holes, reducing the temperature of the aerosol at the outlet of the aerosol-generating article through air dilution, gas condensation, and other means, thereby providing the consumer with a good puffing experience.

[0048] In some possible embodiments, the second cavity 31 of the aerosol-generating article is perforated. The outer surface of the second portion 3 is provided with perforations (not shown) communicating with the second cavity 31. In some possible embodiments, the outer surface of the second portion 3 is provided with one or more rows of perforation groups, each row of perforation groups comprising a plurality of perforations. The shapes of the perforations in the second cavity 31 include, but are not limited to, circular, elliptical, and strip-shaped, and the perforation arrangements include, but are not limited to, one row of perforations or multiple rows of perforations, with the perforation distribution including uniform or uneven.

[0049] For example, when the above P D 1 / P D When the ratio of 2 is too large, the perforated filter portion of the present application causes more air to enter from the perforated filter portion with less resistance when the consumer inhales, diluting the concentration of tobacco substances in the aerosol and also affecting the consumer's smoking experience. Therefore, 0.5≤P D 1 / P D The design of 2≤5 can better achieve the puffing experience of aerosol-generating products.

[0050] In some possible embodiments, the number of the above-mentioned perforations is N, where 1≤N≤10. In some possible embodiments, 2≤N≤8. In some possible embodiments, the equivalent diameter of the perforation is D, where 0.1mm≤D≤0.5mm. For circular perforations, the equivalent diameter of the perforation is the diameter of the circular hole. For non-circular perforations or irregular perforations, the area corresponding to the equivalent diameter of the perforation is equal to the area corresponding to the non-circular perforations or irregular perforations. In some possible embodiments, 0.1mm≤D≤0.4mm. With this arrangement, the temperature of the aerosol at the outlet of the aerosol generating article can be effectively reduced.

[0051] The second cavity 31 may be punched in a manner including, but not limited to, mechanical punching and online laser punching. For example, online laser punching is used.

[0052] Compared with mechanical drilling, using online laser drilling technology to drill holes in the second cavity 31 has the advantage of being easier to adjust. The position, size, number, shape, etc. of the holes can be quickly adjusted according to actual conditions. The laser drilling equipment must meet high-power conditions to penetrate the wrapping paper and cavity tube wall of the second cavity 31 to achieve a ventilation effect. During the production process of aerosol-generating products, when it runs to the laser drilling drum position, the high-energy laser converges the light beam to the second cavity 31 through the focusing head to drill holes in the second cavity 31. By controlling the laser drilling equipment time, cigarette machine speed and other parameters, the size and shape of the holes in the second cavity 31 can be adjusted; by controlling the laser drilling frequency, the number of holes in each circumferential row in the second cavity 31 can be adjusted; and increasing the number of focusing heads of the laser drilling equipment can achieve multiple rows of holes.

[0053] Along the first direction, the length of the first cavity 21 is consistent with the length of the first part 2 , the length of the second cavity 31 is consistent with the length of the second part 3 , and the length of the third cavity 41 is consistent with the length of the third part 4 .

[0054] Among them, the user inhales the aerosol generating product to generate aerosol, and the aerosol flows from the "upstream" to the "downstream" of the aerosol generating product ( Figure 1 (as shown in the direction A in the middle), along the aerosol flow direction, the second part 3 has an upstream end portion of the side wall and a downstream end portion of the side wall, the upstream end portion of the side wall of the second part 3 is arranged facing the first part 2, and the downstream end portion of the side wall of the second part 3 is arranged facing the third part 4.

[0055] For example, refer to Figure 1 The first cavity 21 is a body with a constant cross section, the second cavity 31 is a body with a constant cross section, and the third cavity 41 is a body with a constant cross section. That is, the first cavity 21 is a hollow column, the second cavity 31 is a hollow column, and the third cavity 41 is a hollow column.

[0056] For example, the equivalent diameter of the first cavity 21 is D1, and the equivalent diameter of the second cavity 31 is D2. For a cavity, the equivalent diameter of the cavity is the diameter of a circular cavity. For a non-circular or irregular cavity, the area corresponding to the equivalent diameter of the cavity is equal to the area corresponding to the non-circular or irregular cavity.

[0057] Here, 1.2 ≤ D2 / D1 ≤ 3. That is, the aperture of the second cavity 31 of the second portion 3 is larger than the aperture of the first cavity 21 of the first portion 2. In other words, the first cavity 21 of the first portion 2 has a "small cavity structure," while the second cavity 31 of the second portion 3 has a "large cavity structure."

[0058] When D2 / D1 is too large, that is, D2 is too large or D1 is too small, D2 is too large, which may cause the second part 3 to be insufficiently strong to support the insertion of the heating element into the aerosol generating matrix, resulting in deformation or even breakage of the aerosol generating product and other quality problems. D1 is too small, corresponding to the first part having an excessively thick wall thickness, which will increase the aerosol retention effect. At the same time, the heat transfer resistance of the corresponding part is too large, which is not conducive to aerosol cooling, and may cause the outlet aerosol temperature to be too high, affecting the consumer experience; when D2 / D1 is too small, that is, D2 and D1 are simultaneously too large or too small, it may also cause the aerosol generating product to have insufficient strength or the aerosol retention effect to be too high, and the outlet aerosol temperature to be too high.

[0059] Illustratively, the equivalent diameter of the first cavity 21 is between 2 mm and 4 mm, inclusive. More illustratively, the equivalent diameter of the second cavity 31 is between 4 mm and 6 mm, inclusive. Within this parameter range, the aerosol-generating article of the present invention exhibits a good aerosol smoking effect.

[0060] The filter portion of the present application (first portion 2, second portion 3, and third portion 4) adopts a combination of a "small cavity structure + large cavity structure + solid core structure" and uses laser drilling to cool the aerosol temperature. The wall thickness and strength of the small cavity structure can prevent axial displacement of the tobacco material that may occur during the insertion of the heating element into the aerosol generating matrix 1. The heated aerosol decreases in pressure and correspondingly in temperature when passing through the small-volume first cavity 2 to the large-volume second cavity 3. The sudden change in the flow field is conducive to enhancing convective heat transfer and promoting aerosol cooling.

[0061] Furthermore, the thin walls of the large cavity structure, resulting in low thermal resistance, facilitate aerosol cooling. Combined with the perforations in the sidewalls of the second cavity 3, the inflow of cool air during inhalation promotes condensation of water vapor in the aerosol, prematurely releasing heat. This further reduces the aerosol system temperature at the filter outlet and prevents overheating. For example, the aerosol temperature at the filter outlet is between 40°C and 70°C, inclusive.

[0062] In addition, after the gas flow resistance of the third part 4 (or the filter part) of the present application is reduced, it can effectively avoid excessive retention of aerosol active ingredients.

[0063] The following further describes in detail the comparison of the content of key substances in the aerosol and the comparison of the aerosol outlet temperature under different pressure drop parameters of the tobacco products of the embodiments of the present application.

[0064] Example 1

[0065] In this embodiment, the aerosol generating substrate 1 is controlled to remain unchanged, and the pressure drop of the filter part is changed to adjust the P D 1 and P D2, and samples 1 to 3 mainly adjust the pressure drop of the filter part by punching.

[0066] Sample 1 includes an aerosol-generating matrix 1, a first cavity 2, a second cavity 3, and a third portion 4. The second cavity 3 is a large hollow acetate filter rod structure, with three holes perforated on the outer surface of the second cavity 3, each with a diameter of 0.3 mm. The third portion 4 is a solid acetate filter rod structure. The pressure drop P of the aerosol-generating matrix 1 is D 1 is 180Pa, the total pressure drop P of the filter part D 2 is 50Pa, P D 1 / P D 2 is 3.6.

[0067] Sample 2 includes an aerosol-generating matrix 1, a first cavity 2, a second cavity 3, and a third portion 4. The second cavity 3 is a large hollow acetate filter rod structure, with five holes perforated on the outer surface of the second cavity 3, each with a diameter of 0.3 mm. The third portion 4 is a solid acetate filter rod structure. The pressure drop P of the aerosol-generating matrix 1 is D 1 is 180Pa, the total pressure drop P of the filter part D 2 is 40Pa, P D 1 / P D 2 is 4.5.

[0068] Sample 3 includes an aerosol-generating matrix 1, a first cavity 2, a second cavity 3, and a third portion 4. The second cavity 3 is a large hollow acetate filter rod structure, and the outer surface of the second cavity 3 is not perforated. The third portion 4 is a solid acetate filter rod structure. The pressure drop P of the aerosol-generating matrix 1 is D 1 is 180Pa, and the total pressure drop of the filter part is P D 2 is 60Pa, P D 1 / P D 2 is 3.

[0069] The above-mentioned aerosol generating product is used in conjunction with a heating device. The specific method is as follows: the above-mentioned aerosol generating products are placed in the same heated smoking device for smoking, wherein the heating device button time is 2.4 seconds, the first puff is started after an interval of 14.6 seconds, each puff is 2 seconds, and the next puff is taken after an interval of 28 seconds. After the 8th puff, the capture is stopped, and 8 puffs are captured for each cigarette.

[0070] The aerosol-generating product was smoked in conjunction with a heating device on a smoking machine using a bell-wave puffing method using the Canadian deep puffing method with a puff volume of 55 mL. Aerosols were collected using a glass fiber filter aerosol trap. The captured aerosols were used to determine nicotine and glycerin content by gas chromatography.

[0071] At the same time, the three samples were smoked on a smoking machine using a heating device, and a thermocouple was fixed at the center of the aerosol outlet of the aerosol-generating product. The thermocouple was connected to a temperature data acquisition system to measure the outlet temperature of the aerosol during smoking.

[0072] The different perforation treatments of the three samples changed the total pressure drop of the filter tip, which also affected the P D 1 / P D The value of 2, which in turn affects the aerosol content and the aerosol outlet temperature. The above puffing process was repeated multiple times, and the key component content in the aerosol capture and the aerosol outlet temperature of the three samples were measured. The average values ​​obtained from multiple measurements are shown in Table 1 below.

[0073] Table 1 Comparison of the content of key substances in aerosol emissions and aerosol outlet temperature

[0074]

[0075] The highest aerosol temperature at each aerosol outlet of sample 1, sample 2, and sample 3 is shown in Figure 2. Figure 2 The highest aerosol temperature at each breath is the data measured using a thermocouple, that is, the marked points in the figure. The lines connecting the marked points are only used to indicate the temperature change and do not represent the actual temperature change trend.

[0076] It can be seen from Table 1 that the aerosol generating products of Sample 1, Sample 2 and Sample 3 have good aerosol smoking effects, and the aerosol outlet temperature meets the requirements.

[0077] Example 2

[0078] The filter tip remains unchanged and the pressure drop of the aerosol generating matrix is ​​changed to adjust the P D 1 and P D 2, and the control sample was sample 1.

[0079] Sample 4 includes an aerosol generating matrix 1, a first cavity 2, a second cavity 3 and a third portion 4, and its internal structure and perforation method are the same as those of sample 1. The pressure drop P of the aerosol generating matrix 1 D 1 is 210Pa, and the total pressure drop of the filter part is P D 2 is 50Pa, P D 1 / P D 2 is 4.2. Compared to Sample 1, the pressure drop of the aerosol-generating substrate 1 in Sample 4 is increased by increasing the amount of tobacco material.

[0080] Table 2 Comparison of the contents of key substances in aerosol emissions

[0081]

[0082] Example 3

[0083] In this embodiment, the aerosol generating substrate 1 is controlled to remain unchanged, and the pressure drop of the filter part is changed to adjust the P D 1 and P D 2, and Samples 5 and 6 mainly adjust the pressure drop of the filter part by changing the structure of the second cavity 3 and the material of the third part 4.

[0084] Sample 5 includes an aerosol-generating matrix 1, a first cavity 2, a second cavity 3, and a third portion 4. The second cavity 3 is a small hollow acetate filter rod structure. Due to the thick wall of the cavity filter, no perforation is performed. The third portion 4 is a solid acetate filter rod structure. The pressure drop P of the aerosol-generating matrix 1 is D 1 is 180Pa, and the total pressure drop of the filter part is P D 2 is 150Pa, P D 1 / P D 2 is 1.2.

[0085] Sample 6 includes an aerosol-generating matrix 1, a first cavity 2, a second cavity 3, and a third portion 4. The second cavity 3, like sample 5, is a small hollow acetate filter rod structure without holes. The third portion 4 is a solid acetate filter rod structure with a greater pressure drop than sample 5. The pressure drop P of the aerosol-generating matrix 1 is D 1 is 180Pa, and the total pressure drop of the filter part is P D 2 is 220Pa, P D 1 / P D 2 is 0.8.

[0086] Compared with sample 1, the filter structure of sample 5 has changed. Although only the structure of the second cavity 3 has changed, P D 2 value increases a lot. Further, the pressure drop of the third part 4 of sample 5 is increased to form sample 6. The P of sample 6 is D 2 value has increased.

[0087] Table 3 Comparison of the contents of key substances in aerosol emissions

[0088]

[0089] The above experimental results show that the aerosol generating product of the present invention has a good smoking effect when releasing aerosol.

Claims

1. An aerosol-generating product, characterized in that include: Aerosol-generating matrix; a first portion having a first cavity extending through the first portion along a first direction; The second portion has a second cavity extending through the second portion along the first direction, wherein the first cavity and the second cavity are connected; a third portion, wherein the aerosol-generating substrate, the first portion, the second portion, and the third portion are sequentially arranged along the first direction, and an aerosol generated by heating the aerosol-generating substrate by the heating body can sequentially pass through the first portion, the second portion, and the third portion; The pressure drop of the aerosol generating substrate is P D 1, 100Pa≤P D 1≤300Pa, the total pressure drop of the first part, the second part and the third part is P D 2, P D 2≤250Pa, where 0.5≤P D 1 / P D 2≤5.

2. The aerosol-generating article according to claim 1, wherein The third part is a non-cavity structure.

3. The aerosol-generating article according to claim 2, wherein 100Pa≤P D 1≤200Pa。 4. The aerosol-generating article according to claim 3, wherein P D 2≤100Pa。 5. The aerosol-generating article according to claim 4, wherein The outer surface of the second portion is provided with a through hole communicating with the second cavity.

6. The aerosol-generating article according to claim 5, wherein The outer surface of the second portion is provided with one or more rows of perforation groups, and each row of the perforation groups includes a plurality of the perforations.

7. The aerosol-generating article according to claim 6, wherein The number of the perforations is N, where 1≤N≤10.

8. The aerosol-generating article according to claim 7, wherein 2≤N≤8。 9. The aerosol-generating article according to claim 5, wherein The equivalent diameter of the perforation is D, wherein 0.1 mm≤D≤0.5 mm.

10. The aerosol-generating article according to claim 9, wherein 0.1 mm≤D≤0.4 mm.

11. An aerosol-generating article according to any one of claims 1 to 10, wherein The first cavity is a body with a constant cross section, and the second cavity is a body with a constant cross section.

12. An aerosol-generating article according to claim 11, wherein The equivalent diameter of the first cavity is D1, the equivalent diameter of the second cavity is D2, and 1≤D2 / D1≤3.

13. An aerosol-generating article according to claim 12, wherein The equivalent diameter of the first cavity is 2 mm to 4 mm.

14. An aerosol-generating article according to claim 13, wherein The equivalent diameter of the second cavity is 4 mm to 6 mm.

15. An aerosol-generating article according to claim 14, wherein The first part and the second part are both filter rods.

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