Aerosol-generating article

Abstract

The invention discloses an aerosol-generating article comprising an aerosol-generating substrate and a front end element, the front end element is connected with the front end of the aerosol-generating substrate, a part of aerosol generated after the aerosol-generating substrate is heated flows out of the front end element, and the other part of the aerosol is intercepted in the front end element. According to the aerosol generating product, the front end element is arranged at the front end of the aerosol generating product to prevent the aerosol generating substrate from falling off from the front end of the aerosol generating product, and the front end element has air permeability and adsorbability, so that air outside the aerosol generating product can smoothly enter the aerosol generating product from the front end, and part of aerosol can be intercepted.

Description

Technical Field

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

[0002] Traditional tobacco is harmful to the health of users. As a substitute for traditional tobacco, new aerosol generating devices have been developing rapidly in recent years. Common aerosol generating devices can be roughly divided into electronic cigarettes, heated cigarettes and other categories according to the form of aerosol generating materials. The aerosol generating matrix used to generate aerosols in electronic cigarettes is a liquid material, while the aerosol generating matrix used to generate aerosols in heated cigarettes is a solid material, such as tobacco flakes, tobacco particles, tobacco shreds, reconstituted tobacco, etc.

[0003] The usage rate and acceptance of heated cigarette products among consumers have been increasing. Due to their healthy smoking concept and convenient usage methods, they have even changed the consumption behavior of some young people. However, most of the current heated cigarette products still have usage pain points, such as tobacco falling and accumulating to block the cigarette chamber of the aerosol generating device, and liquids such as tobacco oil overflowing or condensing from the aerosol generating matrix accumulating in the aerosol generating device for a long time, which easily causes flavor changes. These problems affect the user's smoking experience. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that tobacco shreds fall and accumulate to block the cigarette chamber of the aerosol generating device, and liquid such as tobacco oil overflowing or condensing from the aerosol generating matrix accumulates in the aerosol generating device for a long time, which easily causes flavor variation and affects the user's smoking experience.

[0005] To solve the above technical problems, an embodiment of the present invention discloses an aerosol generating product, including an aerosol generating substrate and a front end element, wherein the front end element is connected to the front end of the aerosol generating substrate, and a part of the aerosol generated after heating the aerosol generating substrate flows out from the front end element, and another part of the aerosol is retained in the front end element.

[0006] By adopting the above technical scheme, the present invention sets a front-end element at the front end of the aerosol generating product to prevent the aerosol generating matrix from falling from the front end of the aerosol generating product, and the front-end element has air permeability and adsorptivity, which can not only ensure that the air outside the aerosol generating product smoothly enters the aerosol generating product from the front end, but also intercept part of the aerosol, that is, collect the liquid overflowed or condensed from the aerosol generating matrix.

[0007] Optionally, the front-end element is an acetate filter rod, and the porous structure in the acetate filter rod allows a portion of the aerosol generated after heating the aerosol-generating matrix to flow out of the front-end element, while another portion of the aerosol is retained in the acetate filter rod.

[0008] Optionally, the front end element is a roll formed by folding and rolling a film sheet, which is folded from one end to the other end of the film sheet in an alternating manner with the front and back sides folded to form a pleated sheet, and then rolled from one end to the other end to present a cylindrical body with an outer layer wrapped around an inner layer.

[0009] Optionally, the air permeable channels formed by the outer layer and the inner layer of the film sheet and / or the porous structure distributed in the film sheet allow a portion of the aerosol generated after heating the aerosol generating matrix to flow out from the front end element, and the porous structure distributed in the film sheet allows a portion of the aerosol to be retained in the film sheet.

[0010] Optionally, the porosity of the front end element is greater than or equal to 85%.

[0011] Optionally, the suction resistance pressure difference per unit length (mm) at both ends of the front end element along the axial direction is less than or equal to 10 Pa / mm.

[0012] Optionally, the front-end element is a ceramic column, a metal column or an activated carbon column.

[0013] Optionally, the ceramic column, metal column or activated carbon column is provided with an airflow channel extending axially therethrough, so that the aerosol generated after heating the aerosol generating matrix flows out from the front end element.

[0014] Optionally, the airflow channel includes a groove arranged on the outer peripheral wall of the front end element, and the groove is recessed from the outer peripheral wall of the front end element toward the inside of the front end element along the thickness direction, wherein the thickness direction is located on the cross-section of the aerosol generating product and is perpendicular to the axial direction.

[0015] Optionally, the number of grooves is greater than or equal to four.

[0016] Optionally, the proportion of the circumferential length of the groove formed along the outer peripheral wall of the front end element to the total circumferential length of the front end element is greater than or equal to 10% and less than or equal to 50%.

[0017] Optionally, the grooves form a cross-sectional area that accounts for 5% to 20% of the cross-sectional area of ​​the aerosol-generating article.

[0018] Optionally, the air flow channel includes an internal through hole penetrating from the interior of the front end element, and a diameter of the internal through hole is less than or equal to 1 mm.

[0019] Optionally, the airflow channel also includes a fragrance overflow hole passing through the interior of the front end element, and the fragrance overflow hole is filled with fragrance substances to prevent the aerosol generating matrix from falling from the fragrance overflow hole. The diameter of the fragrance overflow hole is greater than 1 mm and less than or equal to 60% of the diameter of the aerosol generating product.

[0020] Optionally, the front end element comprises at least one liquid collecting portion for collecting liquid overflowing or condensing from the aerosol generating substrate.

[0021] Optionally, the liquid collecting portion is located at the rear end face of the front end element, and includes at least one pit, which is axially recessed from the rear end face toward the interior of the front end element, and is used to collect liquid overflowed or condensed from the aerosol generating matrix.

[0022] Optionally, the pit is a continuous concave surface with a high outer edge and a low middle.

[0023] Optionally, the rear end face also includes an abutment plane, which abuts against the aerosol generating matrix and is arranged around the outer edge of the pit; the projection area of ​​the pit on the cross section and the projection area of ​​the rear end face of the front end element on the cross section account for greater than or equal to 40%.

[0024] Optionally, the front end element comprises at least one aroma substance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view showing an aerosol generating article according to one embodiment of the present invention;

[0026] Figure 2 An axial cross section of an aerosol generating article according to one embodiment of the present invention is shown Figure 1 ;

[0027] Figure 3 An axial cross section of an aerosol generating article according to one embodiment of the present invention is shown Figure 2 ;

[0028] Figure 4 A perspective view showing an aerosol generating article according to another embodiment of the present invention;

[0029] Figure 5 shows an axial cross-sectional view of an aerosol generating article according to another embodiment of the present invention;

[0030] Figure 6 A perspective view showing a front end element of a cylindrical film sheet in another embodiment of the present invention;

[0031] Figure 7 A top view showing a front end element of a cylindrical film sheet in another embodiment of the present invention;

[0032] Figure 8 A perspective view showing an aerosol generating article according to another embodiment of the present invention;

[0033] Fig. 9 An axial cross-sectional view of an aerosol generating article according to another embodiment of the present invention is shown;

[0034] Fig.10 A three-dimensional diagram showing a front end element of a ceramic column, a metal column or an activated carbon column in another embodiment of the present invention;

[0035] Fig.11 An axial cross-sectional view showing a front end element of a ceramic column, a metal column or an activated carbon column in another embodiment of the present invention;

[0036] Fig.12 A top view showing a front end element of a ceramic column, a metal column or an activated carbon column in another embodiment of the present invention;

[0037] Fig.13 A perspective view of an aerosol generating article according to another embodiment of the present invention is shown;

[0038] Fig.14 shows an axial cross-sectional view of an aerosol generating article according to yet another embodiment of the present invention;

[0039] Fig.15 A top view of a front end element of a ceramic column, a metal column or an activated carbon column in another embodiment of the present invention is shown. DETAILED DESCRIPTION

[0040] The following specific embodiments illustrate the implementation of the present invention, and 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 implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to cover other options or modifications that may extend based on the claims of the present invention. In order to provide a deep understanding of the present invention, many specific details will be included in the following description. 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.

[0041] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0042] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0043] refer to Figures 1 to 15 The present invention provides an aerosol generating product 1, comprising an aerosol generating substrate 2 and a front end element 3, the front end element 3 and the front end 21 (such as Figure 2A portion of the aerosol generated after heating the aerosol generating substrate 3 flows out from the front end element 3, and another portion of the aerosol is retained in the front end element 3.

[0044] By adopting the above technical solution, the present invention sets a front end element 3 at the front end 1a of the aerosol generating product 1 to prevent the aerosol generating substrate 2 from falling from the front end 1a of the aerosol generating product 1. A part of the aerosol generated after heating the aerosol generating substrate 3 flows out from the front end element 3, that is, the front end element 3 has air permeability. Another part of the aerosol is intercepted in the front end element 3, that is, the front end element 3 has adsorption. It can not only ensure that the air outside the aerosol generating product 1 smoothly enters the aerosol generating product 1 from the front end 1a, but also intercept part of the aerosol to improve the user's inhalation experience.

[0045] In this embodiment, the front end element 3 has air permeability and adsorption properties, and the front end element 3 provided at the front end 1a of the aerosol generating product 1 has an air permeable structure (not shown in the figure) and a liquid collecting part (not shown in the figure), the air permeable structure is connected to the aerosol generating matrix 2 and the outside of the aerosol generating product 1, and the liquid collecting part is used to collect the liquid overflowing or condensing from the aerosol generating matrix 2. The use of the front end element 3 having an air permeable structure and a liquid collecting part can not only ensure that the air outside the aerosol generating product 1 smoothly enters the aerosol generating product 1 from the front end 1a, but also collect the liquid overflowing or condensing from the aerosol generating matrix 2, thereby improving the user's inhalation experience.

[0046] Figures 1 to 3 An aerosol generating article 11 in one embodiment of the present invention is shown; Figures 4 to 7 An aerosol generating article 12 in another embodiment of the present invention is shown; Figures 8 to 15 1 shows an aerosol generating article 13 in another embodiment of the present invention. In the above embodiments, the aerosol generating article 11, the aerosol generating article 12 and the aerosol generating article 13 are the same except that the materials used for the front end element 3 are different and different structures are set according to different materials. Specifically, refer to Figures 1 to 5 , Figures 8 to 9 , Figure 13 to Figure 14 The aerosol generating products 11, 12 and 13 all include an aerosol generating substrate 2 and a filter segment 5 which are sequentially arranged from the front end 1a to the rear end 1b. The aerosol generating products 11, 12 and 13 also include a cigarette paper 4 which is wrapped around the front end element 3, the aerosol generating substrate 2 and the filter segment 5.

[0047] In the present invention, the front end 1a refers to the end of the aerosol generating product 1 through which the airflow from the outside of the aerosol generating product 1 first flows, and is also the upstream end of the aerosol generating product 1. In other words, the front end 1a is also the distal end and the upstream end of the aerosol generating product 1. Correspondingly, the rear end 1b refers to the end of the aerosol generating product 1 through which the airflow from the outside of the aerosol generating product 1 flows last, and is also the downstream end of the aerosol generating product 1. In other words, the rear end 1b is also the proximal end and the downstream end of the aerosol generating product 1.

[0048] In the embodiment provided by the present invention, the aerosol generating substrate 2 is tobacco shreds. The filter segment 5 may include a filter segment, may include a cooling segment, and may include a support segment. That is to say, the filter segment 5 may be a filter segment, or may be a filter segment and a cooling segment, or may be a filter segment and a support segment, or may be a filter segment, a cooling segment, and a support segment. The present invention does not limit the specific structure inside the aerosol generating product 1, as long as the aerosol generating product 1 includes a front end element 3 and an aerosol generating substrate 2, and the front end element 3 is located at the front end 1a of the aerosol generating product 1, and the front end element 3 is connected to the front end of the aerosol generating substrate 2 (such as Figure 2 The front ends 21 of the aerosol generating substrates 2 shown are adjacent to each other.

[0049] In the present invention, the front-end element 3 has air permeability and interception adsorption. The air permeability means that the front-end element 3 is connected to the outside of the aerosol generating substrate 2 and the aerosol generating product 1, respectively, so that the external air of the aerosol generating product 1 can flow smoothly through the front-end element 3 into the inside of the aerosol generating product 1. The interception adsorption means that the front-end element 2 can intercept part of the aerosol to collect the liquid overflowing or condensed from the aerosol generating substrate 2.

[0050] In the present invention, the heating method of the aerosol generating device (not shown in the figure) used in conjunction with the aerosol generating product 1 is external heating. Exemplarily, the heating portion of the aerosol generating device is a tubular heating portion or an annular heating portion, and the aerosol generating product 1 is placed in the heating portion, and the heating portion can directly heat the periphery of the aerosol generating product 1.

[0051] In some possible embodiments provided by the present invention, reference is made to Figures 1 to 3, the front element 3 is an acetate filter rod 31. The porous structure (not shown in the figure) in the acetate filter rod 31 allows a part of the aerosol generated after heating the aerosol generating matrix 2 to flow out from the front element 3, and the other part of the aerosol is intercepted in the acetate filter rod 31. In other words, the acetate filter rod 31 itself has air permeability and adsorption properties. The acetate filter rod 31 is set as the front element 3. The porous structure of the acetate filter rod 31 itself has both air permeability and interception adsorption properties, so that the external air of the aerosol generating product 1 can smoothly flow into the interior of the aerosol generating product 1 through the acetate filter rod 31. At the same time, the porous structure has an adsorption effect and can collect liquid overflowed or condensed from the aerosol generating matrix 2. In other words, in this embodiment, the porous structure of the acetate filter rod 31 itself can be used as a breathable structure to play a breathable role, and can also be used as a liquid collection part to play an interception and adsorption role, thereby improving the user's suction experience.

[0052] In this embodiment, the porous structure of the acetate filter rod 31 has an adsorption effect on the liquid overflowing or condensing in the aerosol generating matrix 2. In some possible embodiments, the absorption rate of the liquid overflowing or condensing in the aerosol generating matrix 2 is greater than or equal to 90%. After the aerosol generating product 1 is heated and cooled, part of the volatile substances such as smoke will condense into liquids such as smoke oil or flavor liquid, which overflow or condense.

[0053] The calculation method of the absorption rate of the acetate filter rod 31 for the liquid overflowing or condensed in the aerosol generating matrix 2 is as follows: for the aerosol generating product 1 with the front end element 3, the mass added by the front end element 3 is obtained, that is, the mass of the liquid overflowing or condensed from the aerosol generating matrix 2 absorbed by the front end element 3. The total mass of the condensed liquid overflowing from the aerosol generating product 1 is obtained. The total mass of the condensed liquid is equal to the sum of the mass added by the front end element 3 (that is, the total mass of the condensed liquid absorbed by the front end element 3) and the mass added by the aerosol generating device (that is, the total mass of the condensed liquid absorbed by the cigarette containing cavity of the aerosol generating device).

[0054] The ratio of the mass added by the front-end element 3 to the total mass of the condensed liquid overflowing from the aerosol generating product 1, that is, the ratio of the mass of the condensed liquid absorbed by the front-end element 3 to the total mass of the condensed liquid, is the absorption rate of the acetate filter rod 31 for the liquid overflowing or condensed in the aerosol generating matrix 2. Therefore, compared with the aerosol generating product without the front-end element 3, the acetate filter rod 31 is arranged as the front-end element 3 at the front end 21 of the aerosol generating matrix 2, so that the aerosol generating product has the advantage of absorbing liquid.

[0055] For example, the porous structure in the acetate filter rod 31 has an absorption rate of greater than or equal to 90% for the oil spilled from the tobacco shreds, which allows less oil to enter the aerosol generating device, reduces the amount of oil accumulated in the aerosol generating device, and improves the user's smoking experience.

[0056] In some possible embodiments provided by the present invention, reference is made to Figures 4 to 7 , the front end element 3 is a thin film sheet 32. Figure 6 and Figure 7 , the front element 3 is a roll formed by folding and rolling a thin film sheet 32, and the roll is a pleated sheet formed by folding the thin film sheet 32 ​​from one end 32a to the other end 32b in a manner of alternating front and back folding. Exemplarily, the thin film sheet 32 ​​is folded from one end 32a to the other end 32b in a manner of alternating front and back folding to present a folded fan body with multiple substantially parallel ridges (i.e., folds). Afterwards, the thin film sheet 32 ​​is rolled from one end 32a to the other end 32b to present a cylindrical body with an outer layer wrapped around an inner layer. In this embodiment, reference Figure 6 One end 32a of the film sheet 32 ​​is located at the innermost layer of the cylindrical body, and the other end 32b is located at the outermost layer of the cylindrical body.

[0057] In some possible embodiments provided by the present invention, reference is made to Figure 6 and Figure 7 The air permeable channel 321 formed by the outer layer and the inner layer of the film sheet 32 ​​and / or the porous structure (not shown in the figure) distributed in the film sheet 32 ​​allows a part of the aerosol generated after heating the aerosol generating matrix 2 to flow out from the front end element 3, and the porous structure distributed in the film sheet 32 ​​allows part of the aerosol to be trapped in the film sheet 32. In other words, the film sheet 32 ​​as the front end element 3 has an air permeable structure and a liquid collection part, and its air permeable structure is the air permeable channel 321 formed by the outer layer and the inner layer of the film sheet 32 ​​and / or the air permeable structure is the porous structure distributed in the film sheet; and its liquid collection part is the porous structure distributed in the film sheet 32.

[0058] In some embodiments, the air permeable channel 321 formed by the outer layer and the inner layer of the film sheet 32 ​​allows the aerosol generated after heating the aerosol generating substrate 2 to flow out from the front end element 3, that is, the air permeable structure is the air permeable channel 321 formed by the outer layer and the inner layer of the film sheet 32. In other words, the outer layer and the inner layer of the film sheet 32 ​​rolled into a cylindrical shape are not tightly fitted, but a gap is left between the outer layer and the inner layer, so that the outer layer and the inner layer form an air permeable channel 321, and the air permeable channel 321, as the air permeable structure of the rolled film sheet, allows the air outside the aerosol generating product 1 to flow smoothly into the aerosol generating product 1.

[0059] In this embodiment, the film sheet 32 ​​is, for example, a paper material or a polymer material having adsorption holes, that is, the polymer material is provided with a porous structure, and the paper material with a porous structure itself can allow part of the aerosol to be trapped in the film sheet 32. That is, the paper material with a porous structure itself can absorb liquids such as cigarette oil, so it can be used as a liquid collection part. The porous structure of the polymer film serves as the liquid collection part, and the air permeable structure is the air permeable channel 321 formed by the gap between the inner layer and the outer layer of the roll.

[0060] In some other embodiments, the air-permeable structure is a porous structure distributed in the film sheet. That is, the porous structure distributed in the film sheet 32 ​​allows the aerosol generated after heating the aerosol generating substrate 2 to flow out of the front element 3. Exemplarily, the film sheet 32 ​​is, for example, a paper material, and the gaps in the paper material can serve as an air-permeable structure, so that the air outside the aerosol generating article 1 can flow smoothly into the aerosol generating article 1.

[0061] In some other possible embodiments, the air permeable channel 321 formed by the outer layer and the inner layer of the film sheet 32 ​​and the porous structure distributed in the film sheet 32 ​​allow the aerosol generated after the aerosol generating matrix 2 is heated to flow out from the front element 3. That is, the air permeable structure is the air permeable channel 321 formed by the outer layer and the inner layer of the film sheet 32 ​​and the air permeable structure is the porous structure distributed in the film sheet. Among them, the air permeable structure mainly refers to the air permeable channel 321 formed between the inner layer and the outer layer, and the pores of the film sheet 32 ​​also play a certain role in air permeability.

[0062] In some possible embodiments provided by the present invention, the porosity of the front-end element 3 is greater than or equal to 85%. The porosity refers to the percentage of the pore volume in the bulk material to the total volume of the material in the natural state. The size of the material porosity directly reflects the density of the material. A high porosity of the material indicates a low density. The porosity also reflects the air permeability of the air outside the aerosol generating product 1 entering the inside of the aerosol generating product 1 through the front-end element 3. The greater the porosity of the front-end element 3, the more gas enters the inside of the aerosol generating product 1, and the better the air permeability. The method for measuring the porosity is through physical parameter conversion, specifically: the actual weight of the front-end element / density of the material itself = the actual filling volume of the material. (Front-end element volume-actual filling volume of the material) / front-end element volume = porosity. In this embodiment, the overall porosity of the front-end element 3 can be understood as the ratio of the volume of the cavity without matter to the overall volume of the front-end element 3.

[0063] For example, Figures 1 to 3 The porosity of the acetate fiber filter rod 31 shown is greater than or equal to 85%. Figures 4 to 7 The void ratio of the film sheet 32 ​​in the form of a roll is shown to be greater than or equal to 85%.

[0064] In some possible embodiments provided by the present invention, the front end element 3 is arranged along the axial direction X (eg Figures 1 to 6 , Figures 8 to 11 , Fig.13 and Fig.14 The draw resistance pressure difference per unit length (mm) at both ends of the aerosol generating product 1 (in the X direction shown) is less than or equal to 10Pa / mm. In this embodiment, the aerosol generating product 1 is a cylindrical cigarette, and the axial direction X is the axial direction X of the aerosol generating product 1. The aerosol generating product 1 is composed of multiple sections of cylinders, including a front end component section, an aerosol generating matrix section, and a filter section with different functions, different materials, and different structures. The axial direction X of the aerosol generating product 1 is also the axial direction X of the front end component section, the aerosol generating matrix section, and the filter section.

[0065] In this embodiment, the inhalation resistance, also called impedance, is the pressure drop. It refers to the resistance strength of smoke passing through the aerosol generating product 1 after the aerosol generating product 1 is heated. The greater the inhalation resistance of the aerosol generating product 1, the less the air intake will be, which can make the taste richer and the throat hit stronger. Generally speaking, excessive inhalation resistance will lead to insufficient air intake and poor inhalation for users; the inhalation resistance pressure difference per unit length (mm) at both ends of the front end element 3 along the axial direction X is less than or equal to 10Pa / mm, which will increase the air intake and improve the user's inhalation experience. The inhalation resistance pressure difference of the front end element 3 is measured by a inhalation resistance meter. The front end of the front end element 3 (that is, Fig. 9 The front end of the front element 3 shown is located at the front end face 33d) and the rear end (i.e. Fig. 9 The absorption resistance value per unit length of the front end element 3 can be obtained by dividing the absorption resistance value between the end where the rear end surface 33c of the front end element 3 is located by the length of the front end element 3 along the axial direction X.

[0066] For example, Figures 1 to 3 The suction resistance pressure difference per unit length (mm) of the two ends of the acetate fiber filter rod 31 shown in the axial direction X is less than or equal to 10Pa / mm. Figures 4 to 7 The illustrated roll-shaped film sheet 32 ​​has a suction resistance pressure difference per unit length (mm) at both ends along the axial direction X of less than or equal to 10 Pa / mm.

[0067] In some possible embodiments provided by the present invention, reference is made to Figures 8 to 15 , the front end element 3 is a ceramic column 33, a metal column 33 or an activated carbon column 33. Figures 8 to 12 , the front end element 3 is a ceramic column 33a, a metal column 33a or an activated carbon column 33a. Figures 13 to 15 , the front end element 3 is a ceramic column 33b, a metal column 33b or an activated carbon column 33b. Fig.10 , Fig.12 and Fig.15The structure of the ceramic column 33a, the metal column 33a or the activated carbon column 33a is different from that of the ceramic column 33b, the metal column 33b or the activated carbon column 33b.

[0068] Specifically, the ceramic column 33, the metal column 33, and the activated carbon column 33 in the above two embodiments are all solid structures, and further, are rigid structures, and have no elastic deformation space. Compared with the acetate fiber filter rod 31 and the film sheet 32 ​​in the above embodiments, the activated carbon column 33 is a rigid structure, but it does not have strong air permeability. The front-end element in this embodiment is provided with an air flow channel as a permeable structure, so that the aerosol generated after heating the aerosol generating matrix 2 flows out from the front-end element 3.

[0069] Further, the front end element 3 can be used as a heat conductor, that is, the ceramic column 33, the metal column 33 and the activated carbon column 33 can all be used as heat conductors. As long as these materials are used as the front end elements, they can all play a role in heat conduction. Exemplarily, the ceramic column 33 can be a ceramic column 33 made of alumina. When the aerosol generating device with a tubular heater performs peripheral heating on the aerosol generating substrate 2, the front end element 3 will also be heated and heated, so that the front end element 3 can transfer heat to the front end surface of the aerosol generating substrate 2, so that the front end surface of the aerosol generating substrate 2 can also be heated. In this way, the periphery of the aerosol generating substrate 2 is heated by the heater, and the front end surface is also appropriately heated, so that the aerosol generating substrate 2 is heated in three dimensions, and the heating effect is more significant. In addition, the heat conduction method of the front end element 3 heats the front end surface of the aerosol generating substrate 2 moderately, and will not cause the tobacco exposed on the front end surface to be overheated, which is beneficial to the uniformity of the smoke.

[0070] In some possible embodiments provided by the present invention, reference is made to Figures 8 to 15 An airflow channel is provided along the axial direction X as a breathable structure, so that the aerosol generated after heating the aerosol generating matrix 2 flows out from the front end element 3. For example, Fig.10 and Fig.12 The groove 331 shown; another example, Fig.14 and Fig.15 The internal through hole 332 and the fragrance overflow through hole 333 are shown.

[0071] In some possible embodiments provided by the present invention, reference is made to Figures 8 to 12 The air flow channel is a groove 331 provided on the outer peripheral wall of the front end element 33a, and the groove 331 is recessed from the outer peripheral wall of the front end element 3 toward the inside of the front end element 3 along the thickness direction, wherein the thickness direction is located on the cross section of the aerosol generating article 13 and is perpendicular to the axial direction X. The cross section is a plane perpendicular to the axis of the aerosol generating article 1, and is as follows Fig.12 and Fig.15The surface of the aerosol generating article 1 shown is the surface of the aerosol generating article 1 shown in the projection view along the axial direction X. In this embodiment, the front end element 33a is cylindrical, and its thickness direction is the radial direction. Figure 8 The aerosol generating product 13 includes a cigarette paper 4 , which is wrapped around the outer peripheral surface of the front end element 33 a and the aerosol generating substrate 2 .

[0072] In some possible embodiments provided by the present invention, reference is made to Figures 8 to 12 , the number of the grooves 331 is greater than or equal to 4, so that the aerosol generating article 13 has a sufficient number of grooves 331 to allow external air to enter the interior of the aerosol generating article 13.

[0073] In some possible embodiments provided by the present invention, reference is made to Fig.12 Combined with Fig.10 , the ratio of the circumferential length of the groove 331 formed along the outer peripheral wall of the front end element 31a to the total circumferential length of the front end element 33a is greater than or equal to 10%, and less than or equal to 50%, so that the aerosol generating product 13 has a sufficient number of grooves 331 to allow external air to enter the interior of the aerosol generating product 13. The lower limit of the ratio of the circumferential length of the groove 331 formed along the outer peripheral wall of the front end element 31a to the total circumferential length of the front end element 33a is greater than or equal to 10%, so as to reserve a sufficient air intake channel for the aerosol generating product 13; the upper limit is less than or equal to 50%, so as to ensure the bonding area between the front end element 33a and the cigarette paper 4, and prevent the front end element 33a from falling from the front end 1a of the aerosol generating product 13.

[0074] In some possible embodiments provided by the present invention, Fig.12 A schematic diagram showing a cross section of the front end element 33a is shown, referring to Fig.12 The cross-sectional area formed by the groove 331 accounts for 5% to 20% of the cross-sectional area of ​​the aerosol generating article 13.

[0075] In some possible embodiments provided by the present invention, reference is made to Figures 13 to 15 The airflow channel includes an internal through hole 332 that penetrates from the interior of the front end element 3b, and the diameter of the internal through hole 332 is less than or equal to 1 mm. In this embodiment, the aerosol generating substrate 2 is tobacco shreds, and the width of the tobacco shreds is about 1 mm. In order to prevent the tobacco shreds from falling from the front end of the aerosol generating product 13, the diameter of the internal through hole 332 of the front end element 3b is less than or equal to 1 mm.

[0076] In some possible embodiments provided by the present invention, reference is made to Figures 13 to 15The airflow channel also includes a fragrance overflow hole 333 that penetrates from the inside of the front element head 3b. The fragrance overflow hole 333 is filled with a fragrance substance 6 to prevent the aerosol generating matrix 2 from falling from the fragrance overflow hole 333. The diameter of the fragrance overflow hole 333 is greater than 1 mm and less than or equal to 60% of the diameter of the aerosol generating product 13. The diameter of the fragrance overflow hole 333 is greater than 1 mm, which is convenient for placing the fragrance substance 6 in the fragrance overflow hole 333. The diameter of the fragrance overflow hole 333 is less than or equal to 60% of the diameter of the aerosol generating product 13, and the purpose is to reserve 40% of the diameter of the aerosol generating product 13 as an internal through hole 332, i.e., an airflow channel, so that the air outside the aerosol generating product can flow smoothly into the inside of the aerosol generating product.

[0077] The aroma substance 6 is similar to the popping bead in the mouthpiece of a traditional cigarette, and its diameter is generally above 1 mm. The diameter of the cigarette varies, for example, the diameter ranges from to Unequal, such as the diameter of or or The diameter of the fragrance overflow hole 333 is less than or equal to 60% of the diameter of the aerosol generating product 13, so as to fully release the fragrance substance to improve the user's inhalation taste.

[0078] In this embodiment, the surface of the aroma substance 6 is mostly a porous structure, which does not need to be squeezed and broken by external force. The aroma substance 6 can evaporate and overflow through the heating conducted by the front-end element 3 or the flow of air.

[0079] The groove 331 or the internal through hole 332 serves as a breathable structure, so that the aerosol generated after heating the aerosol generating matrix 2 flows out from the front element 3. At the same time, the groove 331 or the internal through hole 332 can also store an appropriate amount of liquid leaked from the aerosol generating matrix.

[0080] In some other possible embodiments provided by the present invention, the front end element 3 includes at least one liquid collecting portion, which is used to collect liquid overflowed or condensed from the aerosol generating matrix 2.

[0081] In some other possible embodiments provided by the present invention, the liquid collecting portion is a pit. Fig. 9 The liquid collecting portion is located at the rear end face 33c of the front end element 3b, and includes at least one pit 330, which is recessed from the rear end face 33c to the interior of the front end element 3b along the axial direction X, and the pit 330 is used to collect liquid overflowed or condensed from the aerosol generating matrix 2.

[0082] That is, the pit 330 serves as a liquid collecting portion of the ceramic column 33b, the metal column 33b or the activated carbon column 33b. In this embodiment, the front end face 33d of the front end element 3b is the end face where the front end 1a of the aerosol generating article 13 is located, and the rear end face 33c is the end face where the other end of the front end element 3b is located.

[0083] In some possible embodiments provided by the present invention, Fig.11 In the axial X-section view of the front end element 33a shown, the pit 330 is a continuous concave surface with a high outer edge and a low middle. Under the action of gravity, the smoke oil can flow along the higher outer edge of the front end element 33a into the lower middle part, thereby collecting the smoke oil, reducing the accumulation of the smoke oil in the aerosol generating device, and improving the user's smoking experience.

[0084] In some possible embodiments provided by the present invention, reference is made to Fig.10 Combined with Fig. 9 The rear end face 33c further includes an abutting plane 334, which abuts against the aerosol generating substrate 2 and is arranged around the outer edge of the recess 330. The projected area of ​​the recess 330 on the cross section accounts for more than or equal to 40% of the projected area of ​​the rear end face 33c of the front end element 3a on the cross section, so that the recess 330 can collect more liquid overflowed or condensed from the aerosol generating substrate 2, such as tobacco oil.

[0085] In some possible embodiments provided by the present invention, the front end element 3 includes at least one aroma substance 6 .

[0086] Specifically, refer to Figure 3 When the front element 3 is an acetate filter rod 31, the flavor substance 6 is disposed inside the acetate filter rod 31. For example, the flavor substance 6 is disposed inside the acetate filter rod 31 in the form of a bursting bead. For another example, a flavor capsule substance is embedded inside the acetate filter rod 31. When the bursting bead or capsule is squeezed and ruptured by an external force, the flavor substance 6 volatilizes and flows through the section of the aerosol generating matrix 2 where the tobacco is located, and is heated (e.g., heated to 190°C to 250°C), it can provide users with a richer taste.

[0087] refer to Figures 4 to 7 , when the front-end element 3 is a film sheet 32. For example, when the film sheet 32 ​​is paper, the paper can be soaked with the aroma substance 6. For another example, the film sheet 32 ​​made of a polymer material is provided with a porous structure as an adsorption structure for the aroma substance 6, so that the film sheet 32 ​​can be soaked with the aroma substance 6. When the front-end element 3 is heated, the aroma substance 6 volatilizes and flows through the section of the aerosol generating matrix 2 where the tobacco is located, which can provide the user with a richer taste.

[0088] In some other possible embodiments, the front-end element 3 includes a variety of aroma substances 6, such as citrus-flavored aroma substances, lemon-flavored aroma substances, osmanthus-flavored aroma substances, rose-flavored aroma substances, etc., to provide users with a rich sensory experience.

[0089] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. An aerosol generating product, characterized in that It comprises an aerosol generating substrate and a front end element, wherein the front end element is connected to the front end of the aerosol generating substrate, a part of the aerosol generated after heating the aerosol generating substrate flows out from the front end element, and another part of the aerosol is retained in the front end element.

2. The aerosol-generating article according to claim 1, wherein The front-end element is an acetate filter rod, and the porous structure in the acetate filter rod allows a portion of the aerosol generated after heating the aerosol generating substrate to flow out from the front-end element, and another portion of the aerosol is retained in the acetate filter rod.

3. The aerosol-generating article of claim 1, wherein: The front end element is a roll formed by folding and rolling a film sheet, wherein the film sheet is folded from one end to the other end in an alternating manner of front and back folding to form a pleated sheet, and then rolled from one end to the other end to present a cylindrical body with an outer layer wrapped around an inner layer.

4. An aerosol-generating article according to claim 3, characterized in that The air permeable channel formed by the outer layer and the inner layer of the film sheet and / or the porous structure distributed in the film sheet allows a portion of the aerosol generated after heating the aerosol generating matrix to flow out from the front end element, and the porous structure distributed in the film sheet allows part of the aerosol to be retained in the film sheet.

5. An aerosol-generating article according to any one of claims 1 to 4, characterized in that The porosity of the front end element is greater than or equal to 85%.

6. An aerosol-generating article according to any one of claims 1 to 4, characterized in that The suction resistance pressure difference per unit length (mm) at both ends of the front end element along the axial direction is less than or equal to 10 Pa / mm.

7. The aerosol-generating article of claim 1, wherein: The front end element is a ceramic column, a metal column or an activated carbon column.

8. An aerosol-generating article according to claim 7, characterized in that The ceramic column, metal column or activated carbon column is provided with an airflow channel penetrating along the axial direction, so that the aerosol generated after heating the aerosol generating matrix flows out from the front end element.

9. An aerosol-generating article according to claim 8, characterized in that The airflow channel includes a groove arranged on the outer peripheral wall of the front end element, and the groove is recessed from the outer peripheral wall of the front end element toward the inside of the front end element along the thickness direction, wherein the thickness direction is located on the cross-section of the aerosol generating product and is perpendicular to the axial direction.

10. An aerosol-generating article according to claim 9, wherein The number of the grooves is greater than or equal to 4.

11. An aerosol-generating article according to claim 10, characterized in that The proportion of the circumferential length of the groove formed along the outer peripheral wall of the front end element to the total circumferential length of the front end element is greater than or equal to 10% and less than or equal to 50%.

12. An aerosol-generating article according to claim 11, characterized in that The cross-sectional area formed by the grooves accounts for 5% to 20% of the cross-sectional area of ​​the aerosol generating article.

13. The aerosol-generating article of claim 8, wherein: The air flow channel includes an internal through hole penetrating from the interior of the front end element, and the diameter of the internal through hole is less than or equal to 1 mm.

14. An aerosol-generating article according to claim 13, characterized in that The airflow channel also includes a fragrance overflow hole that passes through the interior of the front end element. The fragrance overflow hole is filled with fragrance substances to prevent the aerosol generating matrix from falling from the fragrance overflow hole. The diameter of the fragrance overflow hole is greater than 1 mm and less than or equal to 60% of the diameter of the aerosol generating product.

15. An aerosol-generating article according to any one of claims 1 to 4 and 7 to 14, wherein: The front end element comprises at least one liquid collecting portion for collecting liquid overflowing or condensing from the aerosol generating substrate.

16. An aerosol-generating article according to claim 15, characterized in that The liquid collecting portion is located at the rear end surface of the front end element, and includes at least one pit, which is axially recessed from the rear end surface toward the interior of the front end element, and is used to collect liquid overflowed or condensed from the aerosol generating matrix.

17. An aerosol-generating article according to claim 16, characterized in that The pit is a continuous concave surface with a high outer edge and a low middle.

18. An aerosol-generating article according to claim 17, wherein The rear end face also includes a contact plane, which contacts the aerosol generating matrix and is arranged around the outer edge of the pit; the projection area of ​​the pit on the cross section accounts for greater than or equal to 40% of the projection area of ​​the rear end face of the front end element on the cross section.

19. An aerosol-generating article according to any one of claims 1 to 4, 7 to 14, 16 to 18, wherein: The front end element comprises at least one aroma substance.

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