Aerosol generating article and aerosol generating system

Abstract

Aerosol-generating article, characterized in that the aerosol-generating article comprises: a wrapping element having a rod-shaped structure and a lip-proximal end and a lip-distal end located upstream of the lip-proximal end; and a filter element and a combined base substance element arranged in at least a part of the wrapping element in a sequence from the end near the lip to the end far from the lip; wherein the combined matrix element comprises a first matrix element and a second matrix element which are adjacent to each other, and the first matrix element is located near the end remote from the lip, while the second matrix element is located near the end near the lip; the filling quantity of the basic substance of the first basic substance element is higher than the filling quantity of the basic substance of the second basic substance element; the second basic substance element has a one-piece structure, and / or the deformation coefficient of the second basic substance element is lower than the deformation coefficient of the first basic substance element.

Description

Technical field

[0001] The present disclosure relates to the technical field of cigarette products, and more particularly relates to an aerosol generating article and an aerosol generating system. Technical background

[0002] Heatable cigarette products are a new type of tobacco product that uses a smoking utensil to provide a heat source to heat a core material consisting of a tobacco raw material (e.g., an aerosol-forming base substance, etc.). They are characterized by a lower amount of harmful ingredients released compared to traditional cigarettes and can provide consumers with a certain sense of tobacco characteristics.

[0003] Most of the aerosol-forming base materials currently on the market use regenerated tobacco leaves, particles, tobacco filaments, and similar types. The production process for aerosol-forming base materials includes a rolling process, a slurry process, a drying process, and a papermaking process. However, regardless of the production process, the traditional aerosol-forming base material undergoes significant deformation after heating, resulting in a significant change in its inhalation resistance per puff and poor airflow stability, resulting in poor uniformity of the aerosol concentration.For example, an aerosol-forming base substance produced using the rolling method or the slurry method exhibits a high and stable aerosol concentration during the middle and late stages of heated drawing, but its aerosol concentration is comparatively low during the early stages of heated drawing; and an aerosol-forming base substance produced using the drying method or the papermaking method exhibits a high aerosol concentration and a fast formation rate during the early stages of heated drawing, but the aerosol concentration is significantly weakened during the late stages. Therefore, how to enable a more uniform concentration of the aerosol formed by a base substance and improve the uniformity of aroma release of an aerosol article is an urgent problem to be solved in this field. Subject of the revelation

[0004] In view of the above, the present disclosure provides an aerosol generating article and an aerosol generating system that can enable a more uniform concentration of the aerosol formed by a host substance to solve the technical problem of poor uniformity of the concentration of the aerosol generated by a host substance as described above.

[0005] One aspect of this disclosure provides an aerosol generating article comprising: a wrapping element having a rod-shaped structure and a lip-proximal end and a lip-distal end located upstream of the lip-proximal end; and a filter element and a combined base substance element arranged in at least a part of the wrapping element in a sequence from the end near the lip to the end far from the lip; wherein the combined matrix element comprises a first matrix element and a second matrix element which are adjacent to each other, and the first matrix element is located near the end remote from the lip, while the second matrix element is located near the end near the lip; the filling quantity of the basic substance of the first basic substance element is higher than the filling quantity of the basic substance of the second basic substance element; the second basic substance element has a one-piece structure, and / or the deformation coefficient of the second basic substance element is lower than the deformation coefficient of the first basic substance element.

[0006] In an optional embodiment, the first basic substance element has a filling quantity of the basic substance of p1, and the second basic substance element has a filling quantity of the basic substance of p2, wherein 0.6 g / cm 3 ≤ p1 ≤ 0.9 g / cm 3 and 0.3 g / cm 3≤ p2 < 0.6 g / cm 3 .

[0007] In an optional embodiment, the deformation coefficient of the second basic substance element is less than or equal to 5%, and the deformation coefficient of the first basic substance element is greater than 5%. Preferably, the deformation coefficient of the second basic substance element is less than or equal to 1%, and the deformation coefficient of the first basic substance element is greater than 1%. Further preferably, the deformation coefficient of the second basic substance element is 0, and the deformation coefficient of the first basic substance element is greater than 0.

[0008] In an optional embodiment, the first basic substance element has an inhalation resistance of 10-80 Pa / mm, and the second basic substance element has an inhalation resistance of 0-5 Pa / mm.

[0009] In an optional embodiment, the ratio of the length of the second ground substance element to the length of the combined ground substance element is between 0.4:1 and 0.8:1.

[0010] In an optional embodiment, a plurality of through-channels are provided inside the second basic substance element, extending along a direction from the end remote from the lip to the end near the lip; and the total cross-sectional area of ​​the through-channels accounts for 50%-80% of the total cross-sectional area of ​​the second basic substance element.

[0011] In an optional embodiment, the second bulk substance element has micropores having a pore diameter of 20 nm to 50 nm, and the total volume of the micropores accounts for 10%-30% of the total volume of the second bulk substance element.

[0012] In an optional embodiment, the aerosol generating article further comprises a temperature drop assisting element disposed between the filter element and the combined matrix element.

[0013] In an optional embodiment, the temperature drop assisting element is provided with a through hole along a radial direction of the enveloping element.

[0014] In an optional embodiment, the aerosol generating article has a rate of change of inhalation resistance per puff of 5%-10%.

[0015] Another aspect of this disclosure provides an aerosol generating system comprising an aerosol generating article according to any solution as described above and a heating device, wherein the heating device is adapted to heat the aerosol generating article and form inhalable aerosol.

[0016] In the aerosol-generating article proposed in this disclosure and an aerosol generation system containing the same, the filling quantity of the basic substance of the first basic substance element is higher than the filling quantity of the basic substance of the second basic substance element, wherein the low-filled second basic substance element enables a comparatively rapid heat transfer, which promotes a rapid volatilization of volatile components, and the highly filled first basic substance element enables a comparatively slow heat transfer, so that volatile components volatilize slowly; moreover, the deformation coefficient of the second basic substance element is lower than the deformation coefficient of the first basic substance element, ie, the second basic substance element located near the lip end has a smaller deformation coefficient, so that the rate of change of inhalation resistance per puff is smaller when a user puffs this aerosol generating article, which is more conducive to the stabilization of puff resistance and airflow velocity, and thereby promotes the improvement of the stability of the aerosol; and / or the second basic substance element has a one-piece structure, which further ensures that its deformation before and after heating is slight or even no deformation occurs, thereby further improving the stability of the aerosol.

[0017] In other words, the second base substance element is enabled to release aerosol quickly after heating the aerosol generating article by integrally molding the second base substance element as a one-piece structure and / or having a lower deformation coefficient and ensuring that it has the property of a small filling amount of the base substance.This ensures a sufficient aerosol concentration when a user pulls the front section; when the user pulls the middle section, aerosols released simultaneously from the first basic substance element and the second basic substance element cooperate and compensate each other to ensure the uniformity of the aerosol concentration; and when the user pulls the rear section, the low-filled second basic substance element weakens, while the volatile components of the highly filled first basic substance element begin to volatilize in large quantities, so that the deficiencies of the user's final puffs can be compensated, whereby the concentration of aerosol produced by the entire aerosol-generating article remains substantially constant during heating. In addition, the aerosol at the end near the lips (iethe end near the lips for inhalation by the user) undergoes slight deformation or even substantially no deformation before and after heating, so that the stability of the continuous aerosol can be maintained, and a uniform flow rate of the aerosol (smoke) per puff is ensured during the user's inhalation, thereby evenly releasing the aroma of the article and improving the user experience. Description of drawings

[0018] In order to more clearly illustrate technical solutions of the embodiments of this disclosure, the drawings necessary for the embodiments are briefly presented below; and it should be understood that the following drawings show only some embodiments of this disclosure and therefore should not be considered as limitations on the scope, and a person skilled in the art could obtain further related drawings from these drawings without exercising an inventive step. Fig. 1 shows a schematic structural representation of an aerosol generating article according to an embodiment of this disclosure; Fig. 2 shows a first schematic structural representation of a first basic substance element in the aerosol generating article according to an embodiment of this disclosure; Fig.3 shows a second schematic structural representation of the first basic substance element in the aerosol generating article according to an embodiment of this disclosure; Fig. 4 shows a first schematic structural representation of a second basic substance element in the aerosol generating article according to an embodiment of this disclosure; Fig. 5 shows a second schematic structural representation of the second basic substance element in the aerosol generating article according to an embodiment of this disclosure; Fig. 6 shows a third schematic structural representation of the second basic substance element in the aerosol generating article according to an embodiment of this disclosure; Fig. 7 shows a first schematic structural representation of a temperature drop assisting element in the aerosol generating article according to an embodiment of this disclosure; and Fig.8 shows a second schematic structural diagram of the temperature drop assisting element in the aerosol generating article according to an embodiment of this disclosure.

[0019] Reference numerals: 10-combined matrix element; 11-first matrix element; 111-pore; 112-first aerosol matrix; 12-second matrix element; 121-through channel; 122-micropore; 123-second aerosol matrix; 20-wrap element; 30-filter element; 40-temperature drop assisting element; and 41-through hole. Detailed description of embodiments

[0020] To make the objects, technical solutions, and advantages of this disclosure clearer, the technical solutions in the embodiments and working examples of this disclosure are described clearly and completely below. Embodiments or working examples for which no specific conditions are specified are carried out under conventional conditions or the conditions recommended by the manufacturer. Reagents or instruments used for which no manufacturer is specified are conventional products that can be purchased commercially.

[0021] The following illustrates in detail the aerosol generating article and the aerosol generating system provided in the embodiments and the working examples of this disclosure.

[0022] In combination with Fig.1, the aerosol-generating article provided in one embodiment of this disclosure comprises a wrap member 20 having a rod-shaped structure and having a proximal end and a distal end located upstream of the proximal end; and a filter element 30 and a combined matrix element 10 sequentially arranged in at least a portion of the wrap member 20 in an order from the proximal end to the distal end; wherein the combined matrix element 10 comprises a first matrix element 11 and a second matrix element 12 adjacent to each other, and the first matrix element 11 is located near the distal end, while the second matrix element 12 is located near the proximal end.

[0023] In some embodiments, the filling amount of the matrix substance of the first matrix element 11 may be higher than the filling amount of the matrix substance of the second matrix element 12. In some other embodiments, the second matrix element 12 may have a one-piece structure. In some further embodiments, the deformation coefficient of the second matrix element 12 may be lower than the deformation coefficient of the first matrix element 11.

[0024] The term "filling quantity of the matrix substance" is a density obtained by dividing the mass of the matrix substance in that element by the total volume of the element. In some embodiments, the first matrix substance element 11 may, for example, comprise a first aerosol matrix substance 112, and the second matrix substance element 12 may comprise a second aerosol matrix substance 123; in some other embodiments, the first matrix substance element 11 may also comprise a packaging piece, e.g., a wrapping paper, that is attached outside the first aerosol matrix substance 112; the second matrix substance element 12 may also comprise a packaging piece, e.g.,a wrapping paper, which is attached outside the second aerosol base substance 123; therefore, the total volume of the first base substance element 11 may be formed either by the first aerosol base substance 112 or by the packaging piece attached outside the first aerosol base substance 112; therefore, the filling quantity of the base substance of the first base substance element 11 may be a value obtained by dividing the mass of the first aerosol base substance 112 by the total volume of the first base substance element 11.Likewise, the total volume of the second base substance element 12 may be formed either by the second aerosol base substance 123 or by the packaging piece attached outside the second aerosol base substance 123, therefore the filling quantity of the base substance of the second base substance element 12 may be a value obtained by dividing the mass of the second aerosol base substance 123 by the total volume of the second base substance element 12.

[0025] A one-piece structure is a mechanism obtained from a single raw material through integrated molding. For example, the raw material can be integrally formed into a one-piece structure through technologies such as injection molding, compression molding, or extrusion molding. For example, extrusion molding technology involves adding mixed raw materials to an extrusion press, pushing the raw materials forward through the interaction between the cylinder and screw of the extrusion press, and outputting a finished product or intermediate product of a one-piece structure through the machine head.Regardless of whether the above second base substance element 12 comprises a packaging piece, the so-called second base substance element 12 is understood here to be a one-piece structure such that a one-piece structure is formed from the second aerosol base substance 123 therein, rather than to be understood such that the second aerosol base substance 123 and the packaging piece are formed as a one-piece structure, ie a non-one-piece structure can be formed from the packaging piece and the second aerosol base substance 123.

[0026] The term "deformation coefficient" refers to the volume change ratio of the basic substance element before and after heating. For example, the volume of the basic substance element before heating is defined as A, and the volume of the basic substance element after heating is defined as B, and the deformation coefficient = [(A - B) / A] × 100%. Here, the so-called volume of the basic substance element before and after heating refers to the volume formed by the basic substance itself within the basic substance element. For example, if there is a packaging piece outside the basic substance as described above, the deformation coefficient of the basic substance element still refers to the volume formed by the basic substance itself filled within it, rather than the volume formed by the packaging piece.

[0027] Furthermore, the difference between the deformation coefficients may depend on different structures of the two elements. For example, the first basic substance element 11 may not be of a single-piece construction, while the second basic substance element 12 may have a single-piece structure, allowing the deformation coefficient of the second basic substance element 12 to be lower than the deformation coefficient of the first basic substance element 11. Of course, the difference between the deformation coefficients may also depend on different ingredients of the basic substances of the two elements. For example, a difference in the ingredients of the respective raw materials for forming the basic substance in the first basic substance element 11 and the second basic substance element 12, or a difference in the content of the respective raw materials, or a difference in the particle sizes of the raw materials, etc.lead to different deformation coefficients of the first basic substance element 11 and the second basic substance element 12.

[0028] In the aerosol-generating article proposed in one embodiment of this disclosure, the filling quantity of the basic substance of the first basic substance element 11 is higher than the filling quantity of the basic substance of the second basic substance element 12, wherein the low-filled second basic substance element 12 enables a comparatively rapid heat transfer, which promotes a rapid volatilization of volatile components, and the highly filled first basic substance element 11 enables a comparatively slow heat transfer, so that volatile components volatilize slowly; furthermore, the deformation coefficient of the second basic substance element 12 is lower than the deformation coefficient of the first basic substance element 11, i.e., the second base substance element 12 located near the lip end has a smaller deformation coefficient, so that the rate of change of inhalation resistance per puff is smaller when a user puffs this aerosol generating article, which better promotes the stabilization of puff resistance and airflow velocity, and thereby promotes the improvement of the stability of the aerosol; and / or the second base substance element 12 has a one-piece structure, which further ensures that its deformation before and after heating is slight or even no deformation occurs, thereby further improving the stability of the aerosol.

[0029] In other words, the second base substance member 12 is enabled to quickly release aerosol after heating the aerosol generating article by integrally molding the second base substance member 12 as a one-piece structure and / or having a lower deformation coefficient and ensuring that it has the property of a small filling amount of the base substance.This ensures a sufficient aerosol concentration when a user pulls the front portion; when the user pulls the middle portion, aerosols released simultaneously from the first basic substance element 11 and the second basic substance element 12 cooperate and compensate each other to ensure the uniformity of the aerosol concentration; and when the user pulls the rear portion, the low-filled second basic substance element 12 weakens, while the volatile components of the highly filled first basic substance element 11 begin to volatilize in large quantities, so that the deficiencies of the user's final puffs can be compensated, whereby the concentration of the aerosol produced by the entire aerosol-generating article during heating remains substantially constant. In addition, the aerosol at the lip-proximal end (iethe end near the lips for drawing by the user) undergoes slight deformation or even substantially no deformation before and after heating, so that the stability of the aerosol passing through can be maintained, and a uniform flow rate of the aerosol (smoke) per puff during the user's drawing is ensured, thereby evenly releasing the aroma of the article and improving the user experience.

[0030] In some optional embodiments, the first basic substance element 11 has a filling quantity of the basic substance of p1, and the second basic substance element 12 has a filling quantity of the basic substance of p2, wherein 0.6 g / cm 3 ≤ p1 ≤ 0.9 g / cm 3 and 0.3 g / cm 3 ≤ p2 < 0.6 g / cm 3 .

[0031] The filling quantity p1 of the first basic substance element 11 can be, for example, 0.6 g / cm 3, 0.65 g / cm 3 , 0.7 g / cm 3 , 0.75 g / cm 3 , 0.8 g / cm 3 , 0.85 g / cm 3 , or 0.9 g / cm 3 etc., and another value in the range of 0.6 g / cm 3 up to 0.9 g / cm 3 is also possible.

[0032] The filling quantity of the basic substance p2 of the second basic substance element 12 can be, for example, 0.3 g / cm 3 , 0.35 g / cm 3 , 0.4 g / cm 3 , 0.45 g / cm 3 , 0.5 g / cm 3 , 0.55g / cm 3 , or 0.59 g / cm 3 etc., and another value in the range between greater than or equal to 0.3 g / cm 3 and less than 0.6 g / cm 3 is also possible.

[0033] The following explanations must be made: If the filling quantity of the basic substance in the first basic substance element 11 is less than 0.6 g / cm 3the continuous release of active substances is disadvantaged, while the case occurs that the first aerosol base substance 112 filled therein falls off easily due to the insufficient filling quantity; if the filling quantity of the base substance in the first base substance element 11 is greater than 0.9 g / cm 3 , heat transfer is disadvantaged, ie, the heat transfer efficiency is reduced, and under limited heating conditions, active ingredients of the first aerosol base substance 112 are not easy to volatilize, which means that the concentration of the aerosol (smoke) of the central portion of the article cannot be effectively compensated. If the filling amount of the base substance in the second base substance element 12 is less than 0.3 g / cm 3is, active ingredients of the second aerosol base substance 123 filled therein are too small to achieve the required concentration of the article; in contrast, if the filling amount of the base substance in the second base substance element 12 is too high, the heat transfer efficiency is reduced, then the aerosol concentration at the front end of the article cannot be met, that is, it leads to too low aerosol concentration during the early phase.Therefore, by limiting the filling amounts of the base substance in the first base substance element 11 and in the second base substance element 12 to a certain range, it is possible to ensure that the phenomenon of falling off the base substance does not occur, and also to promote the heat transfer efficiency of the base substance to ensure that, during the heating process of the article, a comparatively uniform and comparatively high aerosol concentration can be maintained in both the early phase and the middle and late phases to improve the puffing experience of users.

[0034] In an optional embodiment, the deformation coefficient of the second matrix element 12 may be less than or equal to 5%, e.g., 5%, 4.5%, 4%, 3.5%, 3%, 2.5%, 2%, 1.5%, or 1%, and another value in the range of less than or equal to 5% is also possible. In some preferred embodiments, the deformation coefficient of the second matrix element 12 may be less than or equal to 1%, e.g., 1%, 0.8%, 0.6%, 0.5%, 0.4%, 0.2%, or 0.1%. In some more preferred embodiments, the deformation coefficient of the second matrix element 12 may be 0.

[0035] In some optional embodiments, the deformation coefficient of the first matrix element 11 may be greater than 5%, e.g., 5.1%, 5.5%, 6%, 6.5%, 8%, or 10%, etc. In some preferred embodiments, the deformation coefficient of the first matrix element 11 may be greater than 1, e.g., 1.1%, 1.5%, 2%, 3%, 4%, or 5%, etc. In some more preferred embodiments, the deformation coefficient of the first matrix element 11 may be greater than 0, e.g., 0.1%, 0.5%, 0.8%, 0.9%, or 1%, etc.

[0036] In some optional embodiments, the first matrix element 11 is not constructed in one piece, while the second matrix element 12 has a one-piece structure, such that the deformation coefficient of the second matrix element 12 is lower than the deformation coefficient of the first matrix element. In some further optional embodiments, the first matrix element 11 and the second matrix element 12 may both have a one-piece structure, but the ingredients of the raw material for forming the matrix in the first matrix element 11 and in the second matrix element 12 and / or their proportions are different.For example, the raw material for forming the second aerosol base substance 123 contains sugar or has a higher sugar content, while the raw material for forming the first aerosol base substance 112 contains no sugar or has a lower sugar content, so that the deformation coefficient of the second base substance element 12 is lower than the deformation coefficient of the first base substance element. In some other optional embodiments, the first base substance element 11 is not constructed as a single piece, while the second base substance element 12 has a single piece structure. Furthermore, the ingredients of the raw material for forming the base substance in the first base substance element 11 and in the second base substance element 12 and / or their proportions are different.For example, the raw material for forming the second aerosol base substance 123 contains sugar or has a higher sugar content, while the raw material for forming the first aerosol base substance 112 contains no sugar or has a lower sugar content, so that the deformation coefficient of the second base substance element 12 is lower than the deformation coefficient of the first base substance element. Therefore, by integrally molding the base substance as a one-piece structure and / or adjusting the constituents of the raw material for forming the base substance or their proportions, it is possible for the first base substance element 11 and the second base substance element 12 to have different deformation coefficients, so that the mutual relationship of the deformation coefficients of the two enables the entire aerosol-generating article to maintain a stable smoke emission rate or smoke emission rate during inhalation.Concentration can be maintained, thereby improving the user's puffing experience. Because the raw material for forming the second aerosol base substance contains 123 sugar or has a higher sugar content, this enables a higher strength of the base substance (the second aerosol base substance). After the raw material is formed into the base substance by molding and drying, the deformation coefficient is lower.

[0037] For example, the above sugar or sugar content is a component that functions as glycogen in the raw material, or the content of the component that functions as glycogen. For example, the raw material for forming the first aerosol base substance 112 includes tobacco powder, cellulose, flavors and fragrances, smoke-emitting agents, and excipients; and the raw material for forming the second aerosol base substance 123 includes tobacco powder, cellulose, liquid glucose, flavors and fragrances, smoke-emitting agents, and excipients, wherein the liquid glucose represents the sugar, and its content is the sugar content.

[0038] If the deformation coefficient of the second base substance element 12 after heating is too high, it generally leads to the change of the airflow path of the aerosol (smoke) during each puff and the high change rate of the inhalation resistance of the aerosol generating article, which causes a fluctuation of the aerosol concentration and the aroma.Therefore, by controlling the deformation coefficient of the second base substance element 12 to be below a certain numerical range, it can be effectively ensured that the second aerosol base substance 123 therein has a low deformation coefficient during heating, so that during each pull of the user, the airflow path for circulating the aerosol produced by the first aerosol base substance and / or the second aerosol base substance to the user's lip end (near the lip end of the article) undergoes almost no change to ensure the stability and uniformity of the aerosol concentration or the aroma.

[0039] In some optional embodiments, the inhalation resistance of the first matrix element 11 may be 10-80 Pa / mm, e.g., 10 Pa / mm, 15 Pa / mm, 20 Pa / mm, 25 Pa / mm, 30 Pa / mm, 35 Pa / mm, 40 Pa / mm, 45 Pa / mm, 50 Pa / mm, 55 Pa / mm, 60 Pa / mm, 65 Pa / mm, 70 Pa / mm, 75 Pa / mm, or 80 Pa / mm, etc., and another value in the range of 10 Pa / mm to 80 Pa / mm is also possible. If the first matrix element 11 has too low an inhalation resistance, it easily leads to the matrix therein falling off; if the first matrix element 11 has too high an inhalation resistance, it leads to blocked air channel circulation. By controlling the inhalation resistance of the first base substance element 11 to the above range, it is promoted that the entire aerosol generating article has a comparatively stable rate of change of the inhalation resistance.

[0040] In some optional embodiments, the inhalation resistance of the second base substance element 12 may be 0-5 Pa / mm, e.g., 0 Pa / mm, 0.5 Pa / mm, 1 Pa / mm, 1.5 Pa / mm, 2 Pa / mm, 2.5 Pa / mm, 3 Pa / mm, 3.5 Pa / mm, 4 Pa / mm, 4.5 Pa / mm, or 5 Pa / mm, etc., and another value in the range of 0 to 5 Pa / mm is also possible. By controlling the inhalation resistance of the second base substance element 12 to the above range, the inhalation resistance on the lip-end side can be made sufficiently low. This, on the one hand, promotes the aerosol produced by the second aerosol base substance 123 therein during the early heating phase to quickly circulate to the lip end, thus ensuring that the user quickly receives the aerosol (smoke or flavor) during the early heating phase.On the other hand, it is also promoted that the aerosol produced in the first basic substance element 11 can quickly circulate to the lip end to quickly compensate for the smaller amount of aerosol produced by the second basic substance element 12 at the middle and late stages, so that the problem of concentration attenuation of the aerosol (smoke or aroma) during the middle and late stages of the user's puffing is prevented, thereby improving the stability and uniformity of the concentration of the entire aerosol-generating article, and improving the puffing experience of users.

[0041] Inhalation resistance refers to the resistance a user feels when smoking an aerosol-generating device. It refers to the difficulty of expelling tobacco vapor from the aerosol-generating device during the inhalation process. Inhalation resistance can be obtained directly from a pressure sensor, or it can be calculated using a specific physical formula based on parameters such as pressure change and flow rate after the pressure sensor detects a pressure change. The physical formula is: Inhalation resistance = (pressure change within the air passage) / (inhalation flow rate).

[0042] In one embodiment of this disclosure, the total length of the aerosol-generating article or the lengths of respective components are not limited. In some optional embodiments, the aerosol-generating article may have a length of 40 mm to 60 mm and a diameter of 6.0 mm to 7.8 mm. In some other optional embodiments, the length of the combined matrix element 10 may account for 20%-44% of the length of the aerosol-generating article. Therefore, the total length of the aerosol-generating article or the length of the combined matrix element can be adjusted according to the needs of an actual circumstance, so that the amount of aerosol generated meets the user's usage needs and the applicability, etc., of the aerosol-generating article is improved.

[0043] In some optional embodiments, the ratio of the length of the second matrix element 12 to the length of the combined matrix element 10 may be between 0.4:1 and 0.8:1, such as 0.4:1, 0.45:1, 0.5:1, 0.55:1, 0.6:1, 0.65:1, 0.7:1, 0.75:1, or 0.8:1, and another value in the range of 0.4:1 to 0.8:1 is also possible. In some more preferred embodiments, the ratio of the length of the second matrix element 12 to the length of the combined matrix element 10 is between 0.5:1 and 0.6:1. In the normal state, the first aerosol base substance 112 in the first base substance element 11 would be too little if the second base substance element 12 is too long, while the first base substance element 11 is correspondingly too short because the filling quantity of the base substance in the second base substance element 12 is smaller.In this case, it easily leads to significant attenuation of the aerosol concentration or aroma generated by the entire aerosol-generating article during the middle and late stages of puffing. That is, the content of the first aerosol base substance 112 is too low to compensate for the aerosol concentration during the middle and late stages (especially the late stage) of puffing, thereby impairing the users' puffing experience. If the second base substance element 12 is too short while the first base substance element 11 is correspondingly too long, first, the solubility of the aerosol transmitted by the second base substance element 12 would be too low. That is, the concentration of the aerosol obtained by the user during the early stage of puffing would be too low, which would also impair the users' initial puffing experience.Therefore, the ratio between the length of the second basic substance element 12 and the length of the combined basic substance element 10 is controlled to a certain range, that is, by controlling the length of the first basic substance element 11 and the second basic substance element 12 to a certain range, the stability and uniformity of the aerosol concentration of the aerosol generating article during the early and late stages in the entire heating process can be effectively ensured, and the overall puffing experience of users is improved.

[0044] In one embodiment of this disclosure, the first matrix element 11 includes a first aerosol matrix 112 (as shown in Fig. 2 and Fig. 3), and the second base substance element 12 contains a second aerosol base substance 123 (as shown in Fig. 4 to 6 shown).

[0045] In some embodiments, the first aerosol matrix 112 in the first matrix element 11 may be a thread-like (as in Fig. 2) or plate-shaped (as shown in Fig. 3) stacked structure, and the specific shape for stacking (arranging) may be at least one of the orderly arrangement (as shown in Fig. 2) and irregular arrangement (as shown in Fig. 3). In some other embodiments, the first aerosol matrix 112 in the first matrix element 11 may also have a one-piece structure, for example, a one-piece first aerosol matrix 112 is formed by integrated molding.

[0046] When the first aerosol base material 112 in the first base material element 11 is formed as a stack of thread-like or plate-like structures, each strip (thread-like) or each plate (plate-like) of the base material therein can have a length of 3 mm to 15 mm, a width of 0.6 mm to 1.4 mm, and a thickness of 0.1 mm to 0.4 mm. If the first aerosol base material 112 is too short, too narrow, or too thin, processing becomes difficult, and partial falling of the base material is likely to occur after stacking; if the first aerosol base material 112 is too long, too wide, or too thick, the heated specific area is comparatively small, so the overall smoke generation rate of the first aerosol base material is reduced. By limiting the length, width, or thickness, etc.Therefore, by limiting the thickness of each strip or plate of the base substance in the first aerosol base substance 112 to the above range, it is possible to facilitate processing and prevent the base substance from falling off after stacking, ensure the smoke emission speed of the base substance, and increase the concentration and efficiency of the aerosol generated therefrom upon heating.

[0047] In some optional embodiments, a plurality of pores 111 are provided inside the first basic substance element 11 (as in Fig. 2 and Fig.3) that are continuous along a direction from the lip-distal end to the lip-proximal end to provide an air passage. It can be understood that the above pores 111 are gaps that occur after the first aerosol base substance 112 is arranged therebetween. By providing the above pores 111, an inhalation resistance of the first base substance member 11 of 10 Pa / mm to 80 Pa / mm can be ensured.

[0048] In some optional embodiments, a plurality of through-channels 121 are provided inside the second basic substance element 12 (as in Fig.4 to 6) extending along the direction from the lip-distal end to the lip-proximal end; and the total cross-sectional area of ​​the through-channels 121 accounts for 50%-80% of the total cross-sectional area of ​​the second matrix element 12, such as 50%, 55%, 60%, 65%, 70%, 75%, or 80%, etc., and another value in the range of 50%-80% is also possible. By providing these through-channels 121, it is promoted that the aerosol produced by the aerosol-generating article upon heating can be released more quickly and transmitted to the lip-proximal end.

[0049] By way of example, the above through-channels 121 may have at least one of the following cross-sectional shapes: circular, quasi-circular, rectangular, square, and polygonal (the number of sides > 4) cross-sections.

[0050] In one embodiment of this disclosure, among the plurality of through-channels 121 in the second matrix element 12, the respective through-channels 121 may be arranged at a distance from one another, and it is also possible for partial through-channels 121 to communicate with one another; and the sizes of the respective through-channels 121 may be completely different from one another or at least partially the same. Furthermore, the shapes of the respective through-channels 121 may be completely different from one another or at least partially the same.

[0051] In certain embodiments, the plurality of through-channels 121 in the second basic substance element 12 have the same cross-sectional shape, and as in Fig. 4, the respective through-channels 121 all have a circular cross-section.

[0052] In certain embodiments, the cross-sectional shapes of the plurality of through-channels 121 in the second basic substance element 12 may be partially different, and as shown in Fig. 5, the plurality of through-channels 121 in this second basic substance element 12 include a circular through-channel located in the center and having a circular cross-section, and a plurality of sector-shaped through-channels distributed around the circumferential direction of this circular through-channel, each having a sector-shaped cross-section. As shown in Fig.6, the plurality of through-channels 121 in this second basic substance element 12 include a circular through-channel located at the center and having a circular cross-section, and a plurality of crescent-shaped through-channels distributed counterclockwise around the circumferential direction of this circular through-channel one after another at intervals, each having a crescent-shaped cross-section.

[0053] In some optional embodiments, the second matrix element 12 comprises micropores 122 (in combination with Fig. 4 and Fig.6), the above micropores 122 may be of a quasi-honeycomb shape, and the micropores 122 have a pore diameter of 20 nm to 50 nm, such as 20 nm, 25 nm, 30 nm, 35 nm, 40 nm, 45 nm, or 50 nm, etc., and another value in the range of 20 nm to 50 nm is also possible. The total volume of the micropores 122 accounts for 10-30% of the total volume of the second basic substance element 12, such as 10%, 15%, 20%, 25%, or 30%, etc., and another value in the range of 10%-30% is also possible. By providing these micropores 122, the aerosol produced by the aerosol-generating article upon heating is facilitated to be released more quickly and transmitted to the end near the lips.

[0054] In some optional embodiments, the filter element 30 may be a filter mouthpiece. This filter element 30 may comprise at least one of the following materials: acetate fiber, polypropylene fiber, activated carbon, and a flavor additive. By providing the filter element, not only can shards or fragments of the base substance, etc., be prevented from entering the mouth of users at the distal end, but also contaminants in the aerosol formed by the base substance can be filtered out or adsorbed, thereby reducing the amount of contaminants entering the oral cavity and respiratory tract of users to reduce risks to users' physical health. Furthermore, appropriate complementary adjustments for the inhalation resistance and mouthfeel of the aerosol-generating article, etc., can be made to further improve users' puffing experience.

[0055] In some optional embodiments, the aerosol generating article may also include a temperature drop assisting element 40 disposed between the filter element 30 and the combined matrix element 10.

[0056] In some optional embodiments, the temperature drop assisting member 40 is provided with a through hole 41 along a radial direction of the enveloping member 20 (as shown in Fig. 7 and Fig.8). Here, the radial direction of the wrapping member 20 is also the radial direction of the temperature drop assisting member 40, and the through-hole 41 is a through-hole penetrating a side wall of the temperature drop assisting member. The diameter or number of through-holes 41 is not limited and can be adjusted according to practical needs. Therefore, by providing through-holes 41, outside air is allowed to enter the temperature drop assisting member through these through-holes to contact the aerosol therein, so that the aerosol can be cooled more quickly, thereby preventing the occurrence of circumstances such as excessively hot aerosol entering the mouths of users through the filter element 30, and improving the inhalation experience of users.

[0057] For example, the number of through holes 41 can be 2-16, such as 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, or 16, etc. The number of specifically provided through holes 41 can be adjusted according to practical circumstances. The through holes 41 can be circular or square, for example but not limited to this, and adjustments can be made specifically according to practical circumstances.

[0058] In some optional embodiments, the aerosol-generating article has a change rate of inhalation resistance per puff of 5%-10%, such as 5%, 6%, 7%, 8%, 9%, or 10%, etc., and other values ​​within the range of 5%-10% are also possible. By controlling the change rate of inhalation resistance of the aerosol-generating article per puff to fall within the above range, it can effectively ensure that the concentration of the aerosol obtained by the user with each puff is maintained substantially constant, thereby reducing the concentration fluctuation, so that the case of temporarily too high and temporarily too low aerosol concentration does not occur, thus improving the puffing experience of users.

[0059] The rate of change of inhalation resistance per puff is the variation in the inhalation resistance during each user's puff relative to the inhalation resistance of the previous puff during the heated puffing of the aerosol-generating article. Typically expressed as a percentage or a specific numerical difference value, the rate of change of inhalation resistance per puff can be calculated using the following formula: Rate of change of inhalation resistance per puff = (Inhalation resistance of current puff - Inhalation resistance of previous puff) / Inhalation resistance of previous puff × 100%.

[0060] It should be explained that in connection with contents about the material of the aerosol base substance and other contents about the filter element 30, the wrap element 20, and the temperature drop assisting element 40 in this disclosure, reference may be made to related art, which is not excessively described and defined here.

[0061] In addition, an embodiment of this disclosure also provides an aerosol generating system comprising an aerosol generating article as described above and a heating device, wherein the heating device is adapted to heat the aerosol generating article and form inhalable aerosol.

[0062] Below, the features and characteristics of the embodiments of this disclosure are described in further detail in combination with exemplary embodiments. Example 1

[0063] This embodiment provides an aerosol generating article, and as in Fig. 1, it comprises a wrap element 20, and a filter element 30, a temperature drop assisting element 40, and a combined base substance element 10, which are located in the wrap element 20 and are arranged sequentially from an end near the lip to an end far from the lip.

[0064] This aerosol generating article has a length of 45 mm and a diameter of 7.3 mm.

[0065] The combined matrix element 10 comprises a first matrix element 11 containing a first aerosol matrix 112 and a second matrix element 12 containing a second aerosol matrix 123. The first matrix element 11 and the second matrix element 12 are adjacent to each other, and the first matrix element 11 is located near the lip-distal end, while the second matrix element 12 is located near the lip-proximal end; and the first matrix element 11 is not constructed in one piece, and the first aerosol matrix 112 therein is strip-shaped and properly stacked (arranged as in Fig. 2), while the second basic substance element 12 has a one-piece structure.

[0066] The first aerosol base substance 112 in the first base substance element 11 has a length of 7 mm, a width of 1.0 mm, and a thickness of 0.2 mm, the filling quantity of the first aerosol base substance 112 in the first base substance element 11 is 0.7 g / cm 3 , and the deformation coefficient of the first matrix element 11 is 6.0%. A plurality of pores 111 are provided inside the first matrix element 11, which are continuous along a direction from the end remote from the lip to the end near the lip, and the inhalation resistance of the first matrix element 11 is 120 Pa (about 17 Pa / mm).

[0067] The length of the second basic substance element 12 is 8 mm, its ratio to the length of the combined basic substance element 10 is 0.53:1, the filling quantity of the second basic substance element 12 is 0.5 g / cm 3, the deformation coefficient of the second basic substance element 12 is 0, and the inhalation resistance of the second basic substance element 12 is 0. In the interior of the second basic substance element 12, a plurality of through channels 121 are provided, which extend along the direction from the end remote from the lip to the end near the lip; the plurality of through channels 121 in the second basic substance element 12 have the same cross-sectional shape, and the cross sections of the respective through channels 121 are circular (as in Fig.4). Along the radial direction of the cladding element 20, the total cross-sectional area of ​​the through-channels 121 accounts for 70% of the total cross-sectional area of ​​the second matrix element 12. The second matrix element 12 has quasi-honeycomb-shaped micropores 122, the micropores 122 have a pore diameter of 35 nm, and the total volume of the micropores 122 accounts for 10% of the total volume of the second matrix element 12.

[0068] Along the radial direction of the enveloping member 20, the temperature drop assisting member 40 is provided with four circular through holes 41 (as shown in Fig. 7 shown). Example 2

[0069] This embodiment provides an aerosol generating article, and as in Fig.1, it comprises a wrap element 20, and a filter element 30, a temperature drop assisting element 40, and a combined base substance element 10, which are located in the wrap element 20 and are arranged sequentially from the end near the lip to the end far from the lip.

[0070] This aerosol generating article has a length of 45 mm and a diameter of 7.3 mm.

[0071] The combined matrix element 10 comprises a first matrix element 11 containing a first aerosol matrix 112 and a second matrix element 12 containing a second aerosol matrix 123. The first matrix element 11 and the second matrix element 12 are adjacent to each other, and the first matrix element 11 is located near the end remote from the lip, while the second matrix element 12 is located near the end near the lip. The first aerosol matrix 112 in the first matrix element 11 is strip-shaped and arranged in an orderly manner (as shown in Fig. 2). The second basic substance element 12 has a one-piece structure.

[0072] The first aerosol base substance 112 in the first base substance element 11 has a length of 5 mm, a width of 0.8 mm, and a thickness of 0.2 mm, and the filling quantity of the first aerosol base substance 112 in the first base substance element 11 is 0.7 g / cm 3The deformation coefficient of the first matrix element 11 is 7.0%. A plurality of pores 111 are provided inside the first matrix element 11, which are continuous along the direction from the end distal to the end near the lip, and the inhalation resistance of the first matrix element 11 is 20 Pa / mm.

[0073] The length of the second basic substance element 12 is 10 mm, its ratio to the length of the combined basic substance element 10 is 0.66:1, the filling quantity of the second basic substance element 12 is 0.50 g / cm 3, the deformation coefficient of the second basic substance element 12 is 1%, and the inhalation resistance of the second basic substance element 12 is 3 Pa / mm. A plurality of through-channels 121 are provided inside the second basic substance element 12, extending along the direction from the lip-distal end to the lip-proximal end; the cross-sectional shapes of the plurality of through-channels 121 in the second basic substance element 12 are not completely the same, and as shown in Fig.As shown in FIG. 5, the above plurality of through-channels 121 includes a circular through-channel located at the center and having a circular cross-section, and a plurality of sector-shaped through-channels distributed around the circumferential direction of this circular through-channel, each having a sector-shaped cross-section. Along the radial direction of the wrap member 20, the total cross-sectional area of ​​the through-channels 121 accounts for 50% of the total cross-sectional area of ​​the second matrix member 12. The second matrix member 12 has quasi-honeycomb-shaped micropores 122. The micropores 122 have a pore diameter of 20 nm, and the total volume of the micropores 122 accounts for 20% of the total volume of the second matrix member 12.

[0074] Along the radial direction of the enveloping member 20, the temperature drop assisting member 40 is provided with four rectangular through holes 41 extending inward (as shown in Fig. 8 shown). Example 3

[0075] This embodiment provides an aerosol generating article, and as in Fig. 1, it comprises a wrap element 20, and a filter element 30, a temperature drop assisting element 40, and a combined base substance element 10, which are located in the wrap element 20 and are arranged sequentially from the end near the lip to the end far from the lip.

[0076] This aerosol generating article has a length of 45 mm and a diameter of 7.3 mm.

[0077] The combined matrix element 10 comprises a first matrix element 11 containing a first aerosol matrix 112 and a second matrix element 12 containing a second aerosol matrix 123. The first matrix element 11 and the second matrix element 12 are adjacent to each other, and the first matrix element 11 is located near the end remote from the lip, while the second matrix element 12 is located near the end near the lip. The first aerosol matrix 112 in the first matrix element 11 is striped and irregularly distributed (as in Fig. 3). The second basic substance element 12 has a one-piece structure.

[0078] The first aerosol base substance 112 in the first base substance element 11 has a length of 9 mm, a width of 1.2 mm, and a thickness of 0.2 mm, the filling quantity of the first aerosol base substance 112 in the first base substance element 11 is 0.9 g / cm 3, and the deformation coefficient of the first matrix element 11 is 5.5%. A plurality of pores 111 are provided inside the first matrix element 11, which are continuous along the direction from the end remote from the lip to the end near the lip, and the inhalation resistance of the first matrix element 11 is 50 Pa / mm.

[0079] The length of the second basic substance element 12 is 6 mm, its ratio to the length of the combined basic substance element 10 is 0.4:1, the filling quantity of the second basic substance element 12 is 0.6 g / cm 3, the deformation coefficient of the second basic substance element 12 is 5%, and the inhalation resistance of the second basic substance element 12 is 5 Pa / mm. A plurality of through-channels 121 are provided inside the second basic substance element 12, extending along the direction from the lip-distal end to the lip-proximal end; the cross-sectional shapes of the above plurality of through-channels 121 are not completely the same, and as shown in Fig.6, these multiple through-channels 121 include a circular through-channel located at the center and having a circular cross-section, and a plurality of crescent-shaped through-channels spaced sequentially at intervals around the circumferential direction of this circular through-channel in a counterclockwise direction, each having a crescent-shaped cross-section. Along the radial direction of the wrap member 20, the total cross-sectional area of ​​the through-channels 121 accounts for 80% of the total cross-sectional area of ​​the second matrix member 12. The second matrix member 12 has quasi-honeycomb-shaped micropores 122. The micropores 122 have a pore diameter of 50 nm, and the total volume of the micropores 122 accounts for 30% of the total volume of the second matrix member 12.

[0080] Along the radial direction of the enveloping member 20, the temperature drop assisting member 40 is provided with four circular through holes 41 extending inward. Comparison example 1

[0081] The difference between this comparative example and embodiment 1 is that the entire length of the basic substance element remains unchanged and consists entirely of the first basic substance element 11. Comparison example 2

[0082] The difference between this comparative example and embodiment 1 is that the entire length of the basic substance element remains unchanged and consists entirely of the second basic substance element 12. Comparison example 3

[0083] The difference between this comparative example and embodiment 1 is that the filling amount of the basic substance of the first basic substance element 11 and the filling amount of the basic substance of the second basic substance element 12 are the same and both are 0.5 g / cm 3 be. Comparison example 4

[0084] The difference between this comparative example and Example 1 is that the filling quantity of the basic substance (0.5 g / cm 3 ) of the first basic substance element is less than the filling quantity of the basic substance (0.7 g / cm 3 ) of the second basic substance element 12. Comparison example 5

[0085] The difference between this comparative example and Embodiment 1 lies in that the second basic substance element 12 is not constructed in one piece, and the deformation coefficient of the second basic substance element 12 is greater than or equal to the deformation coefficient of the first basic substance element 11, and its manufacturing method is the same as the manufacturing method of the first basic substance element 11. Control example

[0086] Aerosol generating articles prepared in Working Examples 1 to 3 and Comparative Examples 1 to 5 were tested using a smoke concentration tester for e-cigarettes under the following conditions: a smoking speed of 17.5 m / s, a puff capacity of 35 ml, a puffing time of 13 s, and 13 puffs per cigarette.

[0087] During puffing, the aerosol concentration (amount of smoke or aroma) generated by the article is evaluated according to a sensory evaluation method by heating without combustion, and the aerosol concentration (amount of smoke) of the first two puffs, the aerosol concentration (amount of smoke) of the last three puffs, and the uniformity of smoke release (uniformity of aerosol concentration throughout the heating process) in respective samples are respectively recorded, and the results are shown by the data results in the first three columns of Table 1. In addition, the change rates of inhalation resistance per puff in respective samples are measured by an inhalation resistance tester, the fluctuation ranges of the change rates of inhalation resistance per puff are recorded, and the results are shown by the data in the last column of Table 1.

[0088] The test results are shown in Table 1: Table 1 Test results Concentration of the first two moves Concentration of the last three moves Uniformity of smoke release Range of change rate of inhalation resistance per puff (%) Example 1 high high evenly 5-7 Example 2 high comparatively high evenly 7-8 Example 3 comparatively high high comparatively even 8-10 Comparison example 1 small amount high Lack of uniformity 15-25 Comparison example 2 high small amount Lack of uniformity 12-20 Comparison example 3 Middle level comparatively high Lack of uniformity 12-20 Comparison example 4 high Middle level Lack of uniformity 12-18 Comparison example 5 high small amount Lack of uniformity 15-25

[0089] Since the data on the change rates of inhalation resistance per puff corresponding to each puff of the drawing process are not completely uniform, for the range of the change rate of inhalation resistance per puff in the last column of Table 1, the data on the change rates of inhalation resistance for each puff are uniformly recorded as the range of the change rate of inhalation resistance per puff. For example, a range of the change rate of inhalation resistance per puff of 5-7% in Working Example 1 means that the values ​​of the change rate of inhalation resistance per puff of the aerosol generating article manufactured in Working Example 1 all fall within the range of 5-7%.

[0090] From Table 1, it is apparent that, compared with the comparative examples, the aerosol generating article provided in the embodiments of this disclosure can achieve effects of substantially constant aerosol concentration and uniform release of flavor (smoke, aerosol) during puffing, the change rate of inhalation resistance per puff fluctuates in a comparatively small range, e.g., within the range of 5-10%, and the puffing experience of users can be effectively improved.

[0091] In summary, in one embodiment of this disclosure, the second matrix element 12 is enabled to quickly release aerosol after heating the aerosol generating article by integrally molding the second matrix element 12 as a one-piece structure and / or having a lower deformation coefficient and ensuring that it has the property of a low filling amount of the matrix.This ensures a sufficient aerosol concentration when a user pulls the front portion; when the user pulls the middle portion, aerosols released simultaneously from the first basic substance element 11 and the second basic substance element 12 cooperate and compensate each other to ensure the uniformity of the aerosol concentration; and when the user pulls the rear portion, the low-filled second basic substance element 12 weakens, while the volatile components of the highly filled first basic substance element 11 begin to volatilize in large quantities, so that the deficiencies of the user's final puffs can be compensated, whereby the concentration of the aerosol produced by the entire aerosol-generating article during heating remains substantially constant. In addition, the aerosol at the lip-proximal end (iethe end near the lips for drawing by the user) undergoes slight deformation or even substantially no deformation before and after heating, so that the stability of the aerosol passing through can be maintained, and a uniform flow rate of the aerosol (smoke) per puff during the user's drawing is ensured, thereby evenly releasing the aroma of the article and improving the user experience.

[0092] The above-described embodiments are only preferred embodiments of this disclosure and are not intended to limit this disclosure. Various changes and modifications may be made to this disclosure by those skilled in the art. Any changes, equivalent substitutions, and modifications made within the spirit and principle of this disclosure should be considered within the scope of this disclosure.

[0093] The present disclosure discloses an aerosol generating article and an aerosol generating system, and relates to the technical field of cigarette products. The aerosol generating article comprises a wrapper member, a filter element, and a combined matrix element located in at least a portion of the wrapper member; the combined matrix element comprises adjacent first and second matrix elements; the first matrix element has a higher matrix filling amount than the second matrix element; and the second matrix element has a one-piece structure, and / or the second matrix element has a lower deformation coefficient than the first matrix element.The second basic substance element enables comparatively fast heat transfer so that volatile components volatilize quickly, while the first basic substance element enables comparatively slow heat transfer so that the volatile components volatilize slowly; and the deformation coefficient of the second basic substance element, which is lower than that of the first basic substance element, is conducive to the stabilization of the draft resistance and airflow velocity, and in combination with the one-piece structure of the second basic substance element, the stability of the aerosol can be further improved.

Claims

[1] Aerosol generating article, characterized by that the aerosol-generating article includes: a wrapping element having a rod-shaped structure and a lip-proximal end and a lip-distal end located upstream of the lip-proximal end; and a filter element and a combined base substance element arranged in at least a part of the wrapping element in a sequence from the end near the lip to the end far from the lip; wherein the combined matrix element comprises a first matrix element and a second matrix element which are adjacent to each other, and the first matrix element is located near the end remote from the lip, while the second matrix element is located near the end near the lip; the filling quantity of the basic substance of the first basic substance element is higher than the filling quantity of the basic substance of the second basic substance element; the second basic substance element has a one-piece structure, and / or the deformation coefficient of the second basic substance element is lower than the deformation coefficient of the first basic substance element. [2] Aerosol generating article according to claim 1, characterized by that the first basic substance element has a filling quantity of the basic substance of p1, and the second basic substance element has a filling quantity of the basic substance of p2, wherein 0.6 g / cm 3 ≤ p1 ≤ 0.9 g / cm 3 and 0.3 g / cm 3 ≤ p2 < 0.6 g / cm 3 . [3] Aerosol generating article according to claim 1, characterized by that the deformation coefficient of the second basic substance element is less than or equal to 5%, and the deformation coefficient of the first basic substance element is greater than 5%. [4] Aerosol generating article according to claim 1, characterized bythat the first basic substance element has an inhalation resistance of 10-80 Pa / mm, and the second basic substance element has an inhalation resistance of 0-5 Pa / mm. [5] Aerosol generating article according to claim 1, characterized by that the ratio of the length of the second basic substance element to the length of the combined basic substance element is between 0.4:1 and 0.8:

1. [6] Aerosol generating article according to claim 1, characterized bythat a plurality of through-channels are provided in the interior of the second basic substance element, said through-channels extending along a direction from the end remote from the lip to the end near the lip; and the total cross-sectional area of ​​the through-channels makes up 50%-80% of the total cross-sectional area of ​​the second basic substance element; and / or the second basic substance element has micropores having a pore diameter of 20 nm to 50 nm, and the total volume of the micropores makes up 10%-30% of the total volume of the second basic substance element. [7] Aerosol generating article according to claim 1, characterized by that the aerosol-generating article further includes: a temperature drop assisting element disposed between the filter element and the combined base substance element. [8] Aerosol generating article according to claim 7, characterized bythat along a radial direction of the enveloping element, the temperature drop supporting element is provided with a through hole. [9] Aerosol generating article according to one of claims 1 to 8, characterized by that the aerosol-generating article has a rate of change in inhalation resistance per puff of 5%-10%. [10] Aerosol generation system, characterized by that it comprises an aerosol-generating article according to any one of claims 1 to 9 and a heating device, the heating device being adapted to heat the aerosol-generating article and form inhalable aerosol.

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