Aerosol generating product with segmented smoke guide pipe and application of aerosol generating product

Abstract

The invention provides an aerosol generating product with a segmented smoke guide pipe and application thereof.The aerosol generating product comprises a tobacco section and a filter stick section, the tobacco section comprises the smoke guide pipe and an aerosol generating substrate, and the pipe wall of the segmented smoke guide pipe is provided with a ventilation structure; therefore, when a user smokes, air enters from the far-mouth end of the tobacco section and then tends to enter the hollow tubular structure through the tube wall so as to enter the filter stick section. The sectional smoke guide pipe is arranged in the tobacco section of the heating cigarette, so that after sectional heating is carried out in the sectional heating smoking set, obtained smoke can be sequentially guided into the filter stick section through the sectional smoke guide pipe, and the situation that newly obtained smoke flows through other aerosol generating mechanism sections (not heated or carbonized) to affect taste is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heated cigarette, in particular to an aerosol generating article with segmented smoke guide pipe and application thereof. BACKGROUND

[0002] The heating smoking set on the market can produce low-temperature smoke by heating the cigarette. When in use, the cigarette is inserted into the heating chamber, and the heating body is heated by power supply, so as to heat the cigarette. Whether the heating body is centrally heated or peripherally heated, the heating body is in the form of a whole, and the cigarette is heated by the whole heating body when in use. In the case that the volume of the cigarette is fixed, the power required for the cigarette to produce smoke is fixed. If the cigarette is heated as a whole, the smoking time of the cigarette (i.e. the time from the start of heating to the first puff) is slow, and the number of puffs (i.e. the number of puffs of a cigarette after the start of heating) is small, which reduces the experience of low-temperature smoke and greatly restricts the performance of the low-temperature smoking set. In addition, the heated cigarette is different from the traditional cigarette which releases the internal components in sections by burning. Since the cigarette is heated as a whole at the beginning, the nicotine and flavor components are usually released in the first few puffs, which causes the taste of the tobacco in the latter section to be weak, and affects the smoking experience of the consumer.

[0003] Therefore, the segmented heating type heating smoking set appears in the field. For example, CN103763953A proposes an apparatus comprising a heater configured to heat a smokable material to volatilize at least one component of the smokable material, wherein the heater is elongate and comprises a plurality of independently controllable heating zones arranged in sequence along a longitudinal axis of the heater. CN208259013U discloses a segmented heating type heating body and low-temperature smoking set. The heating body comprises a heating carrier, a heating sheet and an electrode. The heating sheet is attached and fixed on the heating carrier. The surface of the heating carrier is divided into at least two independent heating areas and a mixed heating area between adjacent independent heating areas. The heating sheet on each independent heating area is connected to the heating circuit through the electrode, and the corresponding heating circuits of adjacent independent heating areas are connected in parallel. The heating sheet on adjacent independent heating areas extends to the mixed heating area, and the area is continuously heated. The utility model shortens the waiting time of the low-temperature smoking set for heating and smoking by adopting the segmented heating and mixed heating mode, and makes the smoking flow field during the whole heating process of the cigarette, so that the smoking of the low-temperature smoke has a better experience, and the performance of the low-temperature smoking set is improved.

[0004] Even if the above-mentioned segmented heating smoking device is used, since the smoke needs to flow through other areas after a part of the tobacco is heated, if it flows through the heated smoking area, the tobacco in this area has been carbonized and the odor will be transmitted into the smoke; if it flows through the unheated smoking area, the smoke will also be partially absorbed by this area, resulting in inconsistent taste before and after. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides an aerosol generating product with a segmented smoke guide tube and its application. The aerosol generating product can solve the problem that the aerosol generated in the segmented heating aerosol generating system flows through other aerosol generating substrates.

[0006] In order to achieve the purpose of the invention, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides an aerosol-generating article having a segmented smoke duct, the aerosol-generating article comprising a tobacco segment and a filter rod segment, the tobacco segment comprising the segmented smoke duct and an aerosol-generating substrate.

[0008] The aerosol generating article with the segmented smoke guide tube can be used in a segmented heating aerosol generating device to perform segmented heating to generate aerosol for a user to inhale.

[0009] Preferably, the segmented smoke guiding tube has a hollow tubular structure, and the segmented smoke guiding tube is arranged along the longitudinal direction of the aerosol generating article and inserted into the tobacco segment.

[0010] Preferably, the tube wall of the segmented smoke guide tube has a ventilation structure, so that when the user inhales, the air entering from the distal end of the tobacco segment is more inclined to enter the hollow tubular structure through the tube wall and then enter the filter rod segment.

[0011] Preferably, the tube wall of the segmented smoke guide tube is made of low-resistance material to form the ventilation structure.

[0012] Preferably, the tube wall of the segmented smoke guide tube is made of a low-resistance material.

[0013] Preferably, the tube wall of the segmented smoke guide tube is made of hardened fiber material.

[0014] Preferably, the segmented smoke-guiding pipe has at least one smoke-guiding hole on the pipe wall, for example, there may be two, three, four or five smoke-guiding holes.

[0015] Preferably, the segmented smoke guide pipe is provided with a first smoke guide hole and / or the second smoke guide hole on the pipe wall.

[0016] Preferably, the second smoke guide hole is closer to the proximal end than the first smoke guide hole.

[0017] Preferably, the first smoke guide hole and / or the second smoke guide hole are each independently equipped with a thermally deformable blocking piece;

[0018] The thermally deformable sealing member is closed at room temperature and opens under heating conditions.

[0019] Preferably, the distal end of the segmented smoke guiding pipe is a closed end, and the proximal end of the segmented smoke guiding pipe is an open end.

[0020] Preferably, the filter rod segment comprises a first hollow portion communicating with the open end.

[0021] Preferably, the closed end is capable of closing the distal end of the aerosol-generating article using a plug.

[0022] Preferably, the aerosol-generating article comprises a wrapper circumferentially surrounding the aerosol-generating article.

[0023] Preferably, the wrapping layer has air inlet holes at the tobacco segment or the wrapping layer is made of a low-resistance material.

[0024] In a second aspect, the present invention provides a use of the aerosol-generating article according to the first aspect in preparing an aerosol-generating system.

[0025] In a third aspect, the present invention provides an aerosol generating system, comprising a segmented heating aerosol generating device and the aerosol generating article according to the first aspect;

[0026] The segmented heating aerosol generating device includes a first heating body and a second heating body, wherein the second heating body is closer to the proximal end than the first heating body.

[0027] Preferably, the heating chamber of the segmented heating aerosol generating device has a blocking structure for blocking the distal end of the segmented smoke guide pipe.

[0028] The aerosol-forming matrix is ​​a solid aerosol-forming matrix that may include both solid and liquid components. The solid aerosol-forming matrix may include one or more of a powder, granules, pellets, fragments, strips, strips, or sheets, and may include one or more of herbaceous plant leaves, tobacco leaves, tobacco ribs, flattened tobacco, and homogenized tobacco. The reconstituted tobacco material may be manufactured using existing manufacturing processes in the art, such as roller pressing, thick slurry processing, and papermaking.

[0029] Preferably, the heated cigarette as an aerosol-forming article comprises a smoking portion and a filter portion, and the filter portion can be further subdivided into a support element, an aerosol-cooling element, and a mouthpiece. Furthermore, to prevent the aerosol-forming substrate from leaking out of the distal end of the aerosol-forming article, a breathable blocking member can be provided at the distal end of the aerosol-forming article.

[0030] Preferably, the smoke-generating agent is one or more selected from propylene glycol, ethylene glycol, glycerin, vanillin, vanillic acid, vanillyl acrylate, styrene, benzaldehyde, phenylpropanol, acetophenone, nicotine, nicotinic acid, and amino acids; and the smoke-generating agent comprises glycerin and / or propylene glycol. The weight ratio of glycerin to propylene glycol is 10:0-8:2, 8:2-6:4, 6:4-5:5, 5:5-4:6, 4:6-2:8, or 2:8-10:0. Preferably, the aerosol-forming substrate has an aerosol-forming agent content of greater than 5% by dry weight. More preferably, the smoke-generating agent content is between about 5% and about 30%. In one embodiment, the aerosol-forming substrate has a smoke-generating agent content of about 20% by dry weight.

[0031] Aerosol-forming substrates, including homogenised tobacco sheets for use in aerosol-generating articles, may be manufactured by roll-forming, thick-pulping and papermaking processes known in the art.

[0032] Each element of the filter segment can be formed from any suitable material or combination of materials. For example, it can be formed from one or more materials selected from the group consisting of: cellulose acetate; cardboard; curled paper, such as curled heat-resistant paper or curled parchment paper; and polymeric materials, such as low-density polyethylene (LDPE). In a preferred embodiment, the filter segment elements are formed from cellulose acetate.

[0033] The elements of the aerosol-generating article (e.g., the aerosol-forming substrate and any other elements of the aerosol-generating article, such as the support element, the aerosol-cooling element, and the mouthpiece) are surrounded by an outer wrapper. The outer wrapper is formed from any suitable material or combination of materials. Preferably, the outer wrapper is cigarette paper.

[0034] An aerosol-generating device is used to describe a device that interacts with an aerosol-forming substrate of an aerosol-generating article to generate an aerosol. Preferably, the aerosol-generating device is a smoking device that interacts with an aerosol-generating substrate of an aerosol-generating article to generate an aerosol that is directly inhalable into the user's lungs through the user's mouth. The aerosol-generating device may be a holder for a smoking article.

[0035] The heating method for smoking devices can utilize the principles of resistance heating, infrared heating, and electromagnetic induction heating. Resistance heating mainly includes internal core heating, external heating, and internal and external combined heating. Infrared heating mainly includes external heating. The heater can also be installed in the aerosol-generating product. When the aerosol-generating product is connected to the smoking device, the heater is electrically connected to the smoking device. The heater is preferably in the shape of a needle, strip, leaf, or tube.

[0036] The power source can be any suitable power source, such as a DC voltage source, such as a battery. In one embodiment, the power source is a lithium-ion battery. Alternatively, the power source can be a nickel metal hydride battery, a nickel cadmium battery, or a lithium-based battery, such as lithium cobalt, lithium iron phosphate, lithium titanate, or a lithium polymer battery.

[0037] The control element may be a simple switch. Alternatively, the control element may be an electrical circuit and may include one or more microprocessors or microcontrollers.

[0038] The aerosol generating system may include an aerosol generating device and one or more aerosol generating articles, wherein the aerosol generating device is equipped with a corresponding number of heating chambers to accommodate the aerosol generating articles.

[0039] Any specific point value within the above numerical range can be selected and will not be described in detail here.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] The present invention provides segmented smoke guide tubes in the tobacco segments of the heated cigarette, so that after segmented heating in the segmented heating smoking device, the obtained smoke can be sequentially introduced into the filter rod segments through the segmented smoke guide tubes, thereby preventing the newly obtained smoke from flowing through other aerosol generating mechanism segments (unheated or carbonized) and affecting the taste. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above content of this patent and the following specific embodiments will be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are only examples of the technical solutions claimed.

[0043] Figure 1 is a schematic cross-sectional view of an aerosol-generating article according to a first embodiment;

[0044] Figure 2 is a perspective schematic diagram of a segmented smoke guide pipe according to a first embodiment;

[0045] Figure 3 is a schematic cross-sectional view of an aerosol generating device;

[0046] Figure 4 is a schematic cross-sectional view of an aerosol generating system according to a first embodiment;

[0047] Figure 5 1 is a schematic diagram of airflow when the first heating body of the aerosol generating system of the first embodiment is heated;

[0048] Figure 6 1 is a schematic diagram of airflow when the second heating body of the aerosol generating system of the first embodiment is heated;

[0049] Figure 7 is a perspective schematic diagram of a segmented smoke guide pipe according to a second embodiment;

[0050] Figure 8 is a perspective schematic diagram of the segmented smoke guide pipe of the second embodiment after being heated by the first heating body;

[0051] Figure 9 is a schematic cross-sectional view of an aerosol-generating article according to a third embodiment;

[0052] Figure 10 It is a three-dimensional schematic diagram of a segmented smoke guide pipe in a third embodiment.

[0053] The reference numerals are as follows: aerosol-generating article 100, aerosol-generating substrate 110, aerosol-generating substrate distal end portion 111, aerosol-generating substrate proximal end portion 112, first hollow portion 120, second hollow portion 130, filter portion 140, wrapping layer 150, wrapping layer 150", first air inlet hole 152a", second air inlet hole 152b", segmented smoke guide tube 160, segmented smoke guide tube 160', segmented smoke guide tube 160", tube wall 161, tube wall 161 ', tube wall 161", first smoke guide hole 162a, first smoke guide hole 162a', first smoke guide hole 162a", second smoke guide hole 162b, second smoke guide hole 162b", third smoke guide hole 162c, fourth smoke guide hole 162d, fifth smoke guide hole 162e, sixth smoke guide hole 162f, thermal deformation sealing part 163', plugging part 164", aerosol generating device 200, battery and control component 210, heating chamber 220, first heating body 231, second heating body 232. DETAILED DESCRIPTION

[0054] The detailed features and advantages of this patent are described in detail below in the specific implementation method. The content is sufficient to enable any technical personnel in this field to understand the technical content of this patent and implement it accordingly. Based on the description, claims and drawings disclosed in this specification, technical personnel in this field can easily understand the relevant purposes and advantages of this patent.

[0055] 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 or explained in subsequent drawings.

[0056] In order to make the purpose, technical solutions and advantages of this patent clearer, the implementation methods of this patent will be further described in detail below with reference to the accompanying drawings.

[0057] According to the consumer's usage habits, the direction close to the consumer's mouth during suction is referred to as the proximal end in this article, and conversely, the direction away from the consumer's mouth is referred to as the distal end in this article.

[0058] like Figure 1 As shown, the aerosol-generating article 100 typically takes the form of a cigarette, comprising an aerosol-generating substrate 110, a first hollow portion 120, a second hollow portion 130, and a filter portion 140 at the mouth end, extending from the distal end to the proximal end. The aerosol-generating substrate 110 is primarily composed of tobacco or reconstituted tobacco and can be referred to as a tobacco segment. The tobacco segment also includes a segmented smoke guide 160, which is open at the proximal end and communicates with the first hollow portion 120. The first hollow portion 120, the second hollow portion 130, and the filter portion 140 at the mouth end are collectively referred to as a filter rod segment. These components can be secured and / or connected by specific layers within the wrapping layer. For example, the aerosol-generating substrate can be wrapped with cigarette paper, and the filter rod segment components can be wrapped with plug wrap, which can also be connected to each other using tipping paper.

[0059] like Figure 2 As shown, the segmented smoke guide tube 160 has a hollow tubular structure. The segmented smoke guide tube 160 extends longitudinally along the aerosol-generating article 100 and is inserted into the tobacco segment, surrounding the aerosol-generating substrate 110. The tube wall 161 of the segmented smoke guide tube 160 has a ventilation structure, so that when a user draws air, after entering from the distal end of the tobacco segment, is more likely to pass through the tube wall into the hollow tubular structure and then into the filter rod segment.

[0060] In one embodiment, the wall 161 of the segmented smoke guide 160 is made of a low-resistance material, such as a hollow filter rod made of hardened cellulose diacetate, with a thickness of 2 mm, 1.5 mm, 1 mm, 0.8 mm, or 0.5 mm or less. This ensures that the segmented smoke guide 160 has an air permeability of 500 CU, 800 CU, or 1000 CU or more while maintaining sufficient rigidity. Alternatively, a hollow rod made of porous ceramics or metal mesh may be used.

[0061] In one embodiment, the wall 161 of the segmented smoke-guiding tube 160 is made of hardened cellulose diacetate, and a plurality of smoke-guiding holes are defined in the wall 161. The smoke-guiding holes can be circular, square, triangular, or other polygonal in shape, and can be formed by laser drilling, stamping, puncturing, or other methods. Multiple groups of smoke-guiding holes can be evenly distributed along the length, one group of smoke-guiding holes can be evenly distributed along the circumference, or two groups of smoke-guiding holes can be staggered along the circumference. For example, the wall 161 of the segmented smoke-guiding tube 160 may have, from the proximal end to the distal end, a first smoke-guiding hole 162a, a second smoke-guiding hole 162b, a third smoke-guiding hole 162c, a fourth smoke-guiding hole 162d, a fifth smoke-guiding hole 162e, and a sixth smoke-guiding hole 162f.

[0062] like Figure 3As shown, the aerosol generating device 200 is arranged to receive a heated aerosol generating article 100 so that the aerosol generating substrate 110 in the aerosol generating article 100 generates an aerosol. The aerosol generating device 200 includes a housing, a power supply and main control circuit 210, a heating chamber 220 for receiving at least a portion of the aerosol generating article 100, a first heating body 231 for circumferential heating, and a second heating body 232 closer to the proximal end.

[0063] like Figure 4-6 As shown, the aerosol-generating device 200 and the aerosol-generating article 100 inserted therein constitute an aerosol-generating system. In one embodiment, the bottom of the heating chamber 220 of the segmented-heating aerosol-generating device 200 can be in close contact with the distal end of the segmented smoke-conducting tube 160 to prevent airflow therethrough. In another embodiment, the bottom of the heating chamber 220 of the segmented-heating aerosol-generating device 200 has a cylindrical or truncated-conical raised sealing structure to further strengthen the sealing of the distal end of the segmented smoke-conducting tube 160.

[0064] In one embodiment, after the first heating element 231 is activated and heats the distal end portion 111 of the aerosol-generating substrate, when the consumer draws from the proximal end of the cigarette, the first puff of smoke can enter the segmented smoke duct 160 from the smoke guide holes near the distal end, such as the first smoke guide hole 162a, the second smoke guide hole 162b, and the third smoke guide hole 162c, i.e., the smoke flows in the direction of arrow ①. Subsequently, the first heating element 231 stops heating. After the second heating element 232 is activated and heats the proximal end portion 112 of the aerosol-generating substrate, when the consumer draws from the proximal end of the cigarette, the second puff of smoke can enter the segmented smoke duct 160 from the smoke guide holes near the proximal end, such as the fourth smoke guide hole 162d, the fifth smoke guide hole 162e, and the sixth smoke guide hole 162f, i.e., the smoke flows in the direction of arrow ②. This makes it difficult for the first puff of smoke to enter the proximal end portion 112 of the aerosol-generating substrate, thereby causing the first and second puffs of smoke to interfere with each other. In another embodiment, there may be more heating elements, and the number and position of the heating elements correspond to the length direction of the smoke guide holes, for example, Figure 2 The six smoke guide holes shown provide six sections of heating elements for heating one by one.

[0065] like Figure 7 and 8The second embodiment of the segmented smoke-guiding tube 160' is shown, and its smoke-guiding hole has a heat-deformable sealing member 163'. The heat-deformable sealing member 163' can be a low-temperature wax (such as candelilla wax, carnauba wax, etc.) or an easily atomized gel (such as glycerin containing 1-3wt% alginate, gellan gum, guar), etc. At room temperature, the heat-deformable sealing member 163' is closed, and the airflow cannot pass through the smoke-guiding hole 162a'; when the first heating body at the distal end is started, the distal end of the segmented smoke-guiding tube 160 is also heated to the heating temperature. At this time, the heat-deformable sealing member 163' is opened, and the airflow can pass through the smoke-guiding hole 162a'. The other smoke-guiding holes will also be opened in sequence during the segmented heating process. In addition, the aerosol generating mechanism after heating will carbonize and break and re-block the smoke-guiding hole. In this way, during the segmented heating process, the smoke generated by each aerosol generating matrix segment can flow out from its corresponding smoke-guiding hole, avoiding flowing through other aerosol generating matrix segments.

[0066] like Figure 9-10 In the third embodiment shown, a plugging portion 164" is provided at the distal end of the segmented smoke-guiding tube 160" to form a closed end, while the proximal end of the segmented smoke-guiding tube 160" is an open end and communicates with the first hollow portion 120". Six smoke-guiding holes are provided on the tube wall 161" of the segmented smoke-guiding tube 160" from the proximal end to the distal end, so that smoke can only enter through the smoke-guiding holes and then flow into the first hollow portion 120" from the open end. The tube wall 161" and the plugging portion 164" of the segmented smoke-guiding tube 160" can be made of hardened diacetate cellulose respectively and then bonded together so as to be inserted as a whole into the tobacco segment like a nail (the plugging portion 164" is exposed at the distal end of the tobacco segment). In another specific embodiment, the plugging portion 164" can be fixed to the distal end of the tobacco segment by tipping paper alone.

[0067] The aerosol-generating article 100" comprises a wrapper 150" circumferentially surrounding the aerosol-generating article.

[0068] In one embodiment, the wrapping layer 150" has air inlet holes at the tobacco segment, such as a first air inlet hole (group) 152a" and a second air inlet hole (group) 152b". The shape of the air inlet holes can be circular, square, triangular or other polygonal, and the air inlet holes can be formed by laser punching, stamping, puncturing, etc. Multiple groups of air inlet holes can be evenly distributed in the length direction, one group of air inlet holes can be evenly distributed in the circumferential direction, and the two groups of air inlet holes can be staggered in the circumferential direction. In another embodiment, the number of air inlet holes corresponds to the length direction of the smoke guide hole, for example, for example Figure 2The six smoke guide holes shown provide six sections of air inlet holes for air intake. The positions of the air inlet holes can be staggered with the smoke guide holes in the circumferential direction and / or the longitudinal direction, so that the airflow can flow through the aerosol generating matrix more fully. In another specific embodiment, the wrapping layer 150" is made of a low-resistance material, such as breathable cigarette paper or non-woven fabric, so that the air permeability of the tobacco segment is greater than or equal to 500CU, 800CU or 1000CU. During use, air passes through the wrapping layer 150" and enters the aerosol generating matrix, bringing the smoke generated in each section into the segmented smoke guide tube 160" and directly into the filter rod segment, avoiding flowing through other aerosol generating matrix segments.

[0069] The terms and expressions used herein are for descriptive purposes only, and this patent should not be limited to these terms and expressions. The use of these terms and expressions does not exclude any equivalent features of the illustrations and descriptions (or portions thereof), and it should be recognized that various modifications that may exist should also be included within the scope of the claims. Other modifications, variations, and substitutions are also possible. Accordingly, the claims should be deemed to cover all such equivalents.

[0070] The applicant states that the present invention uses the above-described embodiments to illustrate an aerosol-generating product with a segmented smoke duct and its applications. However, the present invention is not limited to the above-described embodiments, nor does it necessarily rely on the above-described embodiments for implementation. Persons skilled in the art should understand that any improvements to the present invention, equivalent substitutions for raw materials in the present product, addition of auxiliary ingredients, and selection of specific methods, etc., fall within the scope of protection and disclosure of the present invention.

[0071] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0072] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. An aerosol generating product having a segmented smoke guide tube, characterized in that: The aerosol-generating article comprises a tobacco segment and a filter rod segment, wherein the tobacco segment comprises a segmented smoke guide tube and an aerosol-generating substrate.

2. The aerosol-generating article according to claim 1, wherein The segmented smoke guide tube has a hollow tubular structure and is arranged along the longitudinal direction of the aerosol generating article and inserted into the tobacco segment.

3. The aerosol-generating article according to claim 1, wherein The tube wall of the segmented smoke guiding tube has a ventilation structure.

4. The aerosol-generating article according to claim 1, wherein The tube wall of the segmented smoke guide tube is made of low-resistance material; Preferably, the tube wall of the segmented smoke guide tube is made of hardened fiber material.

5. The aerosol-generating article according to claim 1, wherein The segmented smoke guide pipe is provided with at least one smoke guide hole on the pipe wall; Preferably, the segmented smoke guide pipe is provided with a first smoke guide hole and / or the second smoke guide hole on the pipe wall.

6. The aerosol-generating article according to claim 5, wherein The first smoke guide hole and / or the second smoke guide hole are each independently installed with a thermal deformation blocking piece; The thermally deformable sealing member is closed at room temperature and opens under heating conditions.

7. The aerosol-generating article according to claim 2, wherein The distal end of the segmented smoke guide pipe is a closed end, and the proximal end of the segmented smoke guide pipe is an open end; Preferably, the filter rod segment comprises a first hollow portion communicating with the open end; Preferably, the closed end is capable of closing the distal end of the aerosol-generating article using a plug; Preferably, the aerosol-generating article comprises a wrapper circumferentially surrounding the aerosol-generating article; Preferably, the wrapping layer has air inlet holes at the tobacco segment or the wrapping layer is made of a low-resistance material.

8. Use of an aerosol-generating article according to any one of claims 1 to 7 in the preparation of an aerosol-generating system.

9. An aerosol generating system, characterized in that The aerosol generating system comprises a segmented heating aerosol generating device and an aerosol generating article according to any one of claims 1 to 7; The segmented heating aerosol generating device includes a first heating body and a second heating body.

10. The aerosol generating system according to claim 10, wherein: The heating chamber of the segmented heating aerosol generating device is provided with a blocking structure for blocking the distal end of the segmented smoke guide pipe.

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