Aerosol-generating article and plug for aerosol-generating article

Abstract

The present application proposes an aerosol generating article and a plug for an aerosol generating article; wherein the aerosol generating article comprises: an aerosol generating substrate configured to generate an aerosol when heated; a plug arranged to provide support to the aerosol generating substrate upstream of the aerosol generating substrate; the plug comprises: an end wall arranged substantially perpendicular to an axial direction of the aerosol generating article; an annular outer sidewall and an annular inner sidewall extending downstream from the end wall and arranged radially spaced apart from outside to inside; a portion of the aerosol generating substrate is inserted or extended between the outer sidewall and the inner sidewall and axially abuts against the end wall. The above aerosol generating article, which can be more convenient for their fastening combination and assembly, can be supported and blocked by the outer sidewall and the inner sidewall of the plug after the aerosol generating substrate is inserted from downstream.

Description

Technical Field

[0001] This application relates to the field of heated non-combustible aerosol generation technology, and in particular to an aerosol generation product and a plug for the aerosol generation product. Background Technology

[0002] Tobacco products (such as cigarettes, cigars, etc.) produce tobacco smoke by burning tobacco during use. Efforts are being made to replace these tobacco-burning products by creating products that release compounds without combustion.

[0003] Examples of such products are heating devices that release compounds by heating rather than burning materials. For example, the material can be tobacco or other non-tobacco products, which may or may not contain nicotine. Known tobacco or other non-tobacco products employ a plug at the upstream end to prevent the tobacco or non-tobacco material from falling out or detaching from the upstream end; the plug is typically made of a porous polymer such as cellulose acetate or polyethylene, allowing a heater to pass through the plug and be inserted into the tobacco or non-tobacco material for heating. In known tobacco or other non-tobacco products, the plug is a porous synthetic polymer material such as cellulose acetate or polyethylene; in the manufacturing process, these synthetic polymer materials are foamed or towed and then wrapped together with tobacco in cigarette paper to form a cigarette. The plug provides support at the upstream end of the tobacco material to prevent the tobacco material from falling out from the upstream end before or after use. Utility Model Content

[0004] One embodiment of this application provides an aerosol generating article, comprising:

[0005] Aerosol generating matrix is ​​configured to generate aerosols when heated;

[0006] A plug is arranged upstream of the aerosol generating matrix to provide support for the aerosol generating matrix; the plug includes:

[0007] The end wall is arranged substantially perpendicular to the axial direction of the aerosol-generated product;

[0008] The outer and inner walls of the ring extend downstream from the end wall and are arranged radially from the outside to the inside at intervals.

[0009] A portion of the aerosol generating matrix is ​​inserted or extends between the outer and inner walls and axially abuts against the end wall.

[0010] In some embodiments, a first air inlet is provided on the end wall for air to enter; and / or, a second air inlet is provided on the outer side wall for air to enter.

[0011] In some embodiments, the diameter of the first air inlet and / or the second air inlet is between 0.2 mm and 1.0 mm.

[0012] In some embodiments, the number of first air inlets on the end wall is less than the number of second air inlets on the outer wall.

[0013] In some embodiments, the first air inlet is located between the outer wall and the inner wall.

[0014] In some embodiments, it also includes:

[0015] An external wrapping element that at least partially wraps around or restricts the aerosol-generating matrix from the outside;

[0016] The outer wrapper is located downstream of the outer wall of the plug and, together with the outer wall of the plug, defines the outer surface of the aerosol-generating article.

[0017] In some embodiments, the outer wrapping is substantially flush with the outer wall of the plug.

[0018] In some embodiments, a cavity is arranged within the aerosol generating matrix; the cavity extends axially from the upstream end of the aerosol generating matrix to the downstream end;

[0019] The inner wall of the plug extends at least partially into or is inserted into the cavity.

[0020] In some embodiments, the diameter and / or cross-sectional area of ​​the cavity gradually decreases in the direction approaching the downstream.

[0021] And / or, the cavity is substantially conical.

[0022] In some embodiments, the inner wall of the plug is arranged at an angle relative to the central axis of the plug.

[0023] In some embodiments, the angle between the inner wall of the plug and the central axis of the plug is between 5° and 25°.

[0024] In some embodiments, the plug has an axial length of 2 mm to 5 mm.

[0025] Another embodiment of this application provides a plug for aerosol-generating articles, comprising:

[0026] The first and second sides that are opposite to each other along the axial direction;

[0027] The end wall is arranged substantially perpendicular to the axial direction of the plug and is located on the first side;

[0028] The outer and inner walls of the basic annular ring extend from the end wall toward the second side and define it; the outer and inner walls are arranged radially from the outside to the inside at intervals.

[0029] In some embodiments, the inner wall is arranged at an angle relative to the central axis of the plug.

[0030] In some embodiments, a first air inlet is provided on the end wall for air to enter; and / or, a second air inlet is provided on the outer side wall for air to enter.

[0031] The above aerosol generating products can be supported and blocked by the aerosol matrix inserted from downstream through the space between the outer and inner walls of the plug, which makes their fastening and assembly more convenient. Attached Figure Description

[0032] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0033] Figure 1 This is a cross-sectional schematic diagram from one perspective of an aerosol-generated article provided in one embodiment;

[0034] Figure 2 yes Figure 1 A cross-sectional view of the middle plug from one perspective;

[0035] Figure 3 yes Figure 1 The diagram shown is another perspective of the aerosol-generated product.

[0036] Figure 4 yes Figure 2 A schematic diagram of the middle block at another perspective;

[0037] Figure 5 yes Figure 1 A cross-sectional schematic diagram of the aerosol generation matrix from one perspective;

[0038] Figure 6 yes Figure 1 A schematic diagram of an aerosol-generated article being heated in a heating device according to one embodiment. Detailed Implementation

[0039] To facilitate understanding of this application, a more detailed description of this application will be provided below in conjunction with the accompanying drawings and specific embodiments.

[0040] One embodiment of this application proposes a heated aerosol generating article comprising multiple elements assembled in the form of strips, capable of generating aerosols when heated.

[0041] For example Figure 1 and Figure 3 This is a schematic diagram of an aerosol-generating article 1000 according to one embodiment. Figure 1 and Figure 3 As shown, the aerosol generating article 1000 includes an upstream end 1100 and a downstream end 1200 facing away from each other; as used herein, the terms 'upstream' and 'downstream' are used to describe the relative positions of elements or portions of elements of the aerosol generating article 1000 with respect to the direction in which a user draws air from the aerosol generating article 1000 during its use. Downstream can be a direction closer to the user's drawing direction, while upstream is correspondingly a direction away from the user; and, the upstream direction can be the direction in which external air enters the aerosol generating article 1000, and the downstream direction can be the direction in which an airflow containing aerosol exits from the aerosol generating article 1000, for example... Figure 1 The direction is indicated by the middle arrow R12. During use, the aerosol generated by heating within the aerosol generating article 1000 passes through the downstream end 1200 and exits from the downstream end 1200 before being delivered to the user. During use, the user can suction from the downstream end 1200 to inhale the aerosol.

[0042] Among them Figure 1 and Figure 3 In the illustrated embodiment, for ease of use by typical users, the aerosol generating article 1000 has an overall elongated cylindrical structure. Alternatively, in some other variations, the aerosol generating article 1000 may be an elongated elliptical cylinder, a square prism, a polygonal prism, etc.

[0043] In an embodiment, the appearance of the aerosol generating article 1000 may mimic the appearance of a conventional, lit, and smokeable cigarette. The aerosol generating article 1000 may have an outer diameter between approximately 5 mm and 12 mm (e.g., between approximately 5 mm and 10 mm). The aerosol generating article 1000 has an overall length between approximately 40 and 100 mm; in an alternative embodiment, the aerosol generating article 1000 has an overall length between approximately 45 and 55 mm.

[0044] according to Figure 1 As shown, the aerosol generating article 1000 includes multiple components arranged coaxially from the upstream end 1100 to the downstream end 1200:

[0045] The plug 1140, the aerosol generating matrix 1130, the support element 1120, and the filter element 1110.

[0046] The plug 1140, aerosol generating matrix 1130, support element 1120 and filter element 1110 are arranged axially in the aerosol generating article 1000 to form the aerosol generating article 1000.

[0047] In one embodiment, the plug 1140 is located upstream of the aerosol generating matrix 1130. In another embodiment, the plug 1140 is adjacent to and defines the upstream end 1100, and is used to block or seal the upstream end 1100 of the aerosol generating article 1000, thereby preventing material of the aerosol generating matrix 1130 or generated aerosol / aerosol condensate from flowing out from the upstream end 1100. In some examples, the plug 1140 is immediately upstream of the aerosol generating matrix 1130. In another embodiment, the plug 1140 is airflow permeable, allowing air to enter from the upstream end 1100 during suction and flow through the plug 1140 to the downstream aerosol generating matrix 1130.

[0048] Aerosol generating matrix 1130 describes a matrix capable of releasing volatile compounds upon heating, which can form aerosols. Aerosols described herein can be visible or invisible and can comprise vapors (e.g., fine particles of matter in a gaseous state, which are typically liquid or solid at room temperature) as well as droplets of gas and condensed vapors. Aerosol generating matrix 1130 can comprise one or more of the following: powders, granules, pellets, fragments, strands, strips, or sheets, comprising one or more of the following: dried flowers or leaves, grass leaves, tobacco leaves, tobacco midribs, expanded tobacco, and homogenized tobacco. In an alternative embodiment, aerosol generating matrix 1130 comprises aggregated sheets of wrinkled homogenized tobacco material confined by an outer wrapper 1160; the aggregated sheets of wrinkled homogenized tobacco material comprise glycerol as an aerosol forming agent.

[0049] The support element 1120 may be disposed immediately downstream of and adjacent to the aerosol generating matrix 1130. The support element 1120 provides downstream support for the aerosol generating matrix 1130. The support element 1120 is permeable to airflow. The support element 1120 may include one or a combination of porous cellulose acetate, porous polypropylene, porous PET, porous polylactic acid, and PBAT.

[0050] In this embodiment, the support element 1120 and the filter element 1110 are arranged at a distance, thereby forming a cooling chamber 1121 between them. In use, the aerosol generating matrix 1130, after being heated, releases volatile substances that pass through the support element 1120 and downstream of the aerosol generating article 1000. These volatile substances can be cooled within the cooling chamber 1121 to form an aerosol inhaled by the user. Figure 1 In the alternative embodiment shown, the cooling chamber 1121 extends along the length of the aerosol-generating article 1000. The axially extending cooling chamber 1121 ensures that the airflow through it is axially oriented without significant radial deviation. The cooling chamber 1121 can cool the temperature of the aerosol stream drawn through it by means of heat transfer. The components of the aerosol will interact with the space within the cooling chamber 1121 and lose thermal energy. In some embodiments, the temperature of the aerosol stream may decrease by more than 10 degrees Celsius as it is drawn through the cooling chamber 1121. In some embodiments, the temperature of the aerosol stream may decrease by more than 25 degrees Celsius or more than 30 degrees Celsius as it is drawn through the cooling chamber 1121.

[0051] exist Figure 1 and Figure 3 As shown, the cooling cavity 1121 is surrounded and enclosed by an outer enclosure 1160. The outer enclosure 1160 has a connecting hole 1161 that extends from its outer surface into the cooling cavity 1121. In use, the connecting hole 1161 provides air communication between the cooling cavity 1121 and the outside atmosphere, thereby facilitating heat exchange between the cooling cavity 1121 and the outside atmosphere, which promotes cooling of the cooling cavity 1121.

[0052] A filter element 1110 is arranged downstream of the aerosol-generating article 1000 and defines a downstream end 1200 for filtering the aerosol before delivery to the user. The filter element 1110 is spaced apart from the support element 1120. Figure 1 In the embodiments shown, the filter element 1110 comprises a conventional cellulose acetate or polypropylene tow filter core with low filtration efficiency.

[0053] Alternatively, in some other embodiments, the aerosol generating article 1000 may not include the cooling chamber 1121, and a cooling effect may be achieved by giving the filter element 1110 and / or the support element 1120 a longer length, thereby providing heat exchange for the aerosol during downstream delivery.

[0054] To assemble the aerosol-generating article 1000, the multiple components described above are aligned and tightly enclosed within the outer enclosure 1160. Figure 1In the illustrated embodiment, the outer wrapping 1160 may be at least one of conventional cigarette paper, fiber paper, metal foil, metal foil composite fiber paper, polyethylene composite fiber paper, etc.

[0055] In some embodiments, the thickness of the outer wrapping 1160 is 0.1 to 1.0 mm; more preferably, the thickness of the outer wrapping 1160 is 0.35 to 0.45 mm.

[0056] In some embodiments, the plug 1140 is airflow-permeable, thereby allowing air to pass through the plug 1140 during suction and be delivered to the downstream aerosol-generating matrix 1130.

[0057] In this embodiment, the outer wrapping 1160 is essentially airtight. In use, outside air can only enter the aerosol generating matrix 1130 through the plug 1140.

[0058] In some embodiments, the plug 1140 may have an axial length of approximately 2 mm to 5 mm. In some embodiments, the length of the plug 1140 is less than the length of the aerosol generating matrix 1130. In some embodiments, the ratio of the length of the aerosol generating matrix 1130 to the length of the plug 1140 is between 2 and 5:1. In some embodiments, the aerosol generating matrix 1130 has a length of approximately 10 mm to 15 mm.

[0059] In an embodiment, the plug 1140 may be made of materials such as rigid paper, metal foil, ceramic, or organic polymer plastics that can withstand temperatures of at least 150°C.

[0060] according to Figures 1 to 4 As shown, the plug 1140 is configured in an annular shape. The plug 1140 includes:

[0061] The end wall 1143 is arranged substantially perpendicular to the axial direction of the plug 1140 and / or the aerosol-generating article 1000;

[0062] The outer wall 1141 and the inner wall 1142 extend downstream from the end wall 1143; the outer wall 1141 and the inner wall 1142 are arranged radially from the outside to the inside.

[0063] In the embodiment, both the outer wall 1141 and the inner wall 1142 are annular in shape.

[0064] In one embodiment, the end wall 1143 approaches and defines the upstream end 1100 of the aerosol generating article 1000. In another embodiment, the aerosol generating matrix 1130 is at least partially inserted between the outer wall 1141 and the inner wall 1142 of the plug 1140 and longitudinally abuts against the end wall 1143. Upon assembly, the end wall 1143 provides support and protection for the aerosol generating matrix 1130 at the upstream end 1100 to prevent material or debris from the aerosol generating matrix 1130 from falling out of the upstream end 1100.

[0065] In one embodiment, a portion of the aerosol generating matrix 1130 is wrapped and confined from the outside by an external wrapping member 1160, while another portion is inserted into the outer wall 1141 of the plug 1140 and thus wrapped and confined by the outer wall 1141 of the plug 1140.

[0066] In one embodiment, the outer wall 1141 extends downstream from the end wall 1143 to the outer wrapper 1160 and engages with the outer wrapper 1160. Upon assembly, the outer wall 1141 of the plug 1140 and the outer wrapper 1160 together define the outer surface of the aerosol-generating article 1000.

[0067] In this embodiment, the thickness of the outer wall 1141 is the same as that of the outer wrapping 1160. Consequently, after assembly, the surfaces of the outer wall 1141 and the outer wrapping 1160 are smoothly joined.

[0068] according to Figures 1 to 5 As shown, an axially extending cavity 1131 is defined within the aerosol generating matrix 1130. In this embodiment, the cavity 1131 extends downstream from the upstream of the aerosol generating matrix 1130.

[0069] In an embodiment, the inner wall 1142 of the plug 1140 extends at least partially into or into the cavity 1131 of the aerosol generating matrix 1130.

[0070] In this embodiment, the inner diameter of cavity 1131 is variable. Specifically, in this embodiment, the inner diameter of cavity 1131 gradually decreases in the direction approaching the downstream. In this embodiment, the inner surface of cavity 1131 is arranged obliquely relative to the axial direction of aerosol generating matrix 1130.

[0071] In one embodiment, the cavity 1131 has an approximately conical shape. In another embodiment, the cavity 1131 extends substantially axially from one end of the aerosol generating matrix 1130 to the other. In yet another embodiment, the length of the cavity 1131 is substantially the same as the length of the aerosol generating matrix 1130.

[0072] In some embodiments, the aerosol generating matrix 1130 is formed by solidifying a slurry containing tobacco material, and the aerosol generating matrix 1130 is porous. The aerosol generating matrix 1130 with conical cavities 1131 has a varying volume and / or mass of material per unit length in the axial direction; more specifically, the aerosol generating matrix 1130 with conical cavities 1131 has a decreasing volume and / or mass of material per unit length in the axial direction near the upstream end 1100. Therefore, during heating, the portion of the aerosol generating matrix 1130 near the upstream end 1100 can be more easily heated, facilitating rapid preheating and rapid smoke generation. Furthermore, during the heating of the aerosol generating matrix 1130, different portions of the aerosol generating matrix 1130 in the axial direction can have different aerosol generation rates, which is advantageous for delivering a uniform amount of aerosol downstream throughout the heating process.

[0073] according to Figures 1 to 5 As shown, the inner wall 1142 of the plug 1140 is arranged at an angle. In an embodiment, the inner wall 1142 of the plug 1140 is tapered. The diameter of the inner wall 1142 gradually decreases towards the downstream direction. Figure 2 In the illustrated embodiment, the angle α between the inner wall 1142 of the plug 1140 and the central axis of the plug 1140 is approximately 5° to 25°. During assembly, it is advantageous to insert the inclined inner wall 1142 into the cavity 1131 of the aerosol generating matrix 1130.

[0074] according to Figures 1 to 5 As shown, the plug 1140 is provided with an air inlet to provide external air from the upstream end 1100 into the aerosol-generating article 1000 during suction.

[0075] In this embodiment, the air inlet on the plug 1140 includes:

[0076] Multiple first air inlets 1146 are arranged on the end wall 1143;

[0077] And / or, a plurality of second air inlets 1145 are arranged on the outer side wall 1141.

[0078] In some embodiments, the diameter of the first air inlet 1146 and / or the second air inlet 1145 is between 0.2 mm and 1.0 mm; for example, in some specific embodiments, the diameter of the first air inlet 1146 and / or the second air inlet 1145 is between 0.3 mm and 0.8 mm.

[0079] In this embodiment, the number of first air inlets 1146 on the end wall 1143 is less than the number of second air inlets 1145 on the outer wall 1141. Therefore, during suction, the amount of air entering radially from the outer wall 1141 via the outer side is greater than the amount of air entering axially from the upstream end 1100; this is advantageous for forming vortex airflow. For example, in Figure 3 and Figure 4 In the embodiment shown, there are 12 first air inlets 1146 and 18 second air inlets 1145.

[0080] In an embodiment, a plurality of first air inlets 1146 are located between the outer wall 1141 and the inner wall 1142 in the radial direction of the plug 1140. For example, in Figure 4 As shown, multiple first air inlets 1146 surround the inner wall 1142.

[0081] In one embodiment, a plurality of second air inlets 1145 are arranged circumferentially at intervals on the outer sidewall 1141.

[0082] Figure 6 The diagram shows a schematic of an aerosol generation system consisting of an aerosol generation product 1000 and a heating device; in use, according to... Figure 6 As shown, the aerosol generating article 1000 is received in a heating device, and the aerosol generating matrix 1130 of the aerosol generating article 1000 is heated by the heating device to generate aerosol. According to Figure 6 In the illustrated embodiment, the heating device includes:

[0083] The chamber has an opening 40; in use, the aerosol-generating article 1000 can be removably received in the chamber through the opening 40.

[0084] A heater 30, which extends at least partially within the chamber, is inserted into the aerosol generating matrix 1130 of the aerosol generating article 1000 when the aerosol generating article 1000 is received in the chamber, and heats the aerosol generating article 1000 to release a variety of volatile compounds, which are formed solely by heat treatment.

[0085] Cell 10 is used for power supply;

[0086] Circuit 20 is used to guide current between cell 10 and heater 30.

[0087] In one embodiment, the heater 30 generates an aerosol that can be inhaled by heating the aerosol generating matrix 1130 to a temperature above the minimum heating temperature required to generate an aerosol.

[0088] exist Figure 6In the illustrated embodiment, the heater 30 is generally shaped like a pin, needle, rod, column, sheet, or plate. When the aerosol generating article 1000 is received in the chamber, the heater 30 is inserted into the aerosol generating matrix 1130 from the upstream end 1100 of the aerosol generating article 1000, passing through the end wall 1143 and inner wall 1142 of the plug 1140, to heat and generate aerosol. In some embodiments, the heater 30 may have a length of approximately 10 to 18 mm and an outer diameter of approximately 2 to 4 mm.

[0089] In an embodiment, the end wall 1143 of the plug 1140 can be punctured or penetrated by the heater 30.

[0090] In this embodiment, when the aerosol generating article 1000 is received in the heating device, the heater 30 is inserted into the aerosol generating matrix 1130. In use, the aerosol generating matrix 1130 is heated to generate aerosol, which is then output downstream.

[0091] In some embodiments, the heater 30 may also be configured to at least partially surround or define a chamber arrangement; for example, the heater 30 may be configured as a tubular shape that at least partially surrounds the chamber. When the aerosol generating article 1000 is received in the chamber, the heater 30 at least partially surrounds or encloses the aerosol generating article 1000 and heats it from the outer periphery of the aerosol generating article 1000. Furthermore, when the aerosol generating article 1000 is received within a heating device, it is at least partially contained and held within the heater 30, and is then heated from the outside around the aerosol generating matrix 1130 of the aerosol generating article 1000 by the heater 30, thereby causing the aerosol generating article 1000 to release a variety of volatile compounds, which are formed solely by heat treatment. In some embodiments, the tubular heater 30 may have an inner diameter of approximately 5.8 mm to 10 mm.

[0092] In some embodiments, heater 30 includes at least one of a resistance heater, induction heater, infrared heater, microwave heater, or light heater such as a laser heater.

[0093] according to Figure 6As shown, when the aerosol generating product 1000 is received in the heating device and the heater 30 is inserted into the aerosol generating matrix 1130 for heating, air enters the aerosol generating matrix 1130 through the first air inlet 1146 and the second air inlet 1145 of the plug 1140. Only a small amount of air passes through the heater 30, and the surface temperature of the heater 30 is relatively stable, which reduces the oxidation reaction of tobacco substances in the aerosol generating matrix 1130 and prevents violent oxidation. At the same time, in conjunction with the user's inhalation action, the surface of the heater 30 is in a negative pressure state, which can stabilize the tobacco substance decomposition reaction and increase the types and contents of flavor components released.

[0094] It should be noted that the preferred embodiments of this application are given in the specification and accompanying drawings, but are not limited to the embodiments described in this specification. Furthermore, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An aerosol-generating product, characterized in that, include: Aerosol generating matrix is ​​configured to generate aerosols when heated; A plug is arranged upstream of the aerosol generating matrix to provide support for the aerosol generating matrix; the plug includes: The end wall is arranged substantially perpendicular to the axial direction of the aerosol-generated product; The outer and inner walls of the ring extend downstream from the end wall and are arranged radially from the outside to the inside at intervals. A portion of the aerosol generating matrix is ​​inserted or extends between the outer and inner walls and axially abuts against the end wall.

2. The aerosol-generating product as described in claim 1, characterized in that, The end wall is provided with a first air inlet for air to enter; and / or, the outer wall is provided with a second air inlet for air to enter.

3. The aerosol-generating product as described in claim 2, characterized in that, The diameter of the first air inlet and / or the second air inlet is between 0.2 mm and 1.0 mm.

4. The aerosol-generating article as described in claim 2 or 3, characterized in that, The number of first air inlets on the end wall is less than the number of second air inlets on the outer wall.

5. The aerosol-generating article as described in claim 2 or 3, characterized in that, The first air inlet is located between the outer wall and the inner wall.

6. The aerosol-generating article according to any one of claims 1 to 3, characterized in that, Also includes: An external wrapping element that at least partially wraps around or restricts the aerosol-generating matrix from the outside; The outer wrapper is located downstream of the outer wall of the plug and, together with the outer wall of the plug, defines the outer surface of the aerosol-generating article.

7. The aerosol-generating article as described in claim 6, characterized in that, The outer wrapping is joined to the outer wall of the plug in a substantially smooth manner.

8. The aerosol-generating article according to any one of claims 1 to 3, characterized in that, The aerosol generating matrix has a cavity arranged therein; the cavity extends axially from the upstream end of the aerosol generating matrix to the downstream end. The inner wall of the plug extends at least partially into or is inserted into the cavity.

9. The aerosol-generating article as described in claim 8, characterized in that, The diameter and / or cross-sectional area of ​​the cavity gradually decreases towards the downstream direction; And / or, the cavity is substantially conical.

10. The aerosol-generating article according to any one of claims 1 to 3, characterized in that, The inner wall of the plug is arranged at an angle relative to the central axis of the plug.

11. The aerosol-generating article as described in claim 10, characterized in that, The angle between the inner wall of the plug and the central axis of the plug is between 5° and 25°.

12. The aerosol-generating article according to any one of claims 1 to 3, characterized in that, The plug has an axial length of 2 mm to 5 mm.

13. A plug for aerosol-generating products, characterized in that, include: The first and second sides that are opposite to each other along the axial direction; The end wall is arranged substantially perpendicular to the axial direction of the plug and is located on the first side; The outer and inner walls of the basic annular ring extend from the end wall toward the second side and define it; the outer and inner walls are arranged radially from the outside to the inside at intervals.

14. The plug for aerosol-generating articles as described in claim 13, characterized in that, The inner wall is arranged at an angle relative to the central axis of the plug.

15. The plug for aerosol-generating articles as described in claim 13 or 14, characterized in that, The end wall is provided with a first air inlet for air to enter; and / or, the outer wall is provided with a second air inlet for air to enter.

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