Aerosol generating article and aerosol generating system

Abstract

Provided in the embodiments of the present disclosure are an aerosol generating article and an aerosol generating system. The aerosol generating article comprises a substrate section and at least one functional section, wherein the substrate section is configured to generate an aerosol; the at least one functional section and the substrate section are arranged in a first direction, and the at least one functional section and the substrate section are of a split structure; the at least one functional section is configured to be prepared from at least one base body; the base body extends in the first direction; the base body is configured to be prepared from a plant, which comprises a plurality of natural straight through holes arranged in parallel; and a plurality of airflow channels extending in the first direction are provided in the base body, the natural straight through holes forming the airflow channels.

Description

Aerosol-generating article and aerosol-generating system

[0001] Cross-reference to related applications

[0002] The present disclosure is based on and claims priority to Chinese Patent Application No. 202411104621.4, filed on August 12, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of smoking articles, and in particular to an aerosol-generating article and an aerosol-generating system. BACKGROUND

[0004] An aerosol-generating article can form an aerosol by being ignited or by heating without combustion (HNB). In the aerosol-generating article of the heating without combustion type, the aerosol-generating article is heated by an external heat source to just a degree sufficient to emit an aerosol, and the aerosol-generating article does not burn, and by loading a smoking agent, the smoking agent is released to form an aerosol by heating the aerosol-generating article when used.

[0005] In the related art, a functional segment is made of a material that is prone to phase change or deformation, such as a hollow paper tube (containing an inner / outer aluminum foil, a type of paper tube with a film, etc.), a corrugated tube, a silica gel piece, a hollow acetate fiber structure, etc. After the functional segment is deformed or melted by heat, it can block part of the airway, release odors, affect the sense of touch, and affect the draw resistance, thereby reducing the user experience. SUMMARY

[0006] To solve the above technical problems, the present disclosure provides an aerosol-generating article and an aerosol-generating system capable of improving the user experience.

[0007] The present disclosure is implemented by the following technical solutions.

[0008] A first aspect of the present disclosure provides an aerosol-generating article, comprising:

[0009] a substrate segment for generating an aerosol;

[0010] at least one functional segment arranged along a first direction with the substrate segment, and the at least one functional segment and the substrate segment are in a split structure;

[0011] Wherein, at least one of the functional segments is constructed by being made from at least one substrate, the substrate extending along the first direction, the substrate being constructed by being made from a plant containing a plurality of parallel natural through holes, the interior of the substrate having a plurality of airflow channels extending along the first direction, the natural through holes forming the airflow channels.

[0012] In one embodiment, the matrix segment includes the matrix and a load, the matrix being used to load the load, the load including at least an aerosol generating agent.

[0013] In one embodiment, the matrix includes at least one of bamboo, wood, kudzu, wisteria, akebia vine, grapevine, astragalus root, codonopsis root, rush stem, onion stem, sugarcane, corn, sorghum, and reed.

[0014] In one embodiment, the porosity of the matrix is ​​in the range of 50% to 98%; and / or,

[0015] The density of the matrix is ​​0.05 g / cm³. 3 Up to 0.3 g / cm 3 The range.

[0016] In one embodiment, the porosity of the matrix is ​​in the range of 80% to 95%; and / or,

[0017] The density of the matrix is ​​0.1 g / cm³. 3 Up to 0.24 g / cm 3 The range.

[0018] In one embodiment, the airflow channels with an equivalent diameter of 1 μm to 2 mm account for more than 90% of all the airflow channels in the substrate.

[0019] In one embodiment, the ratio of the sum of the cross-sectional areas of all the airflow channels with equivalent diameters in the range of 0.01 mm to 0.3 mm to the cross-sectional area of ​​the substrate in a cross section perpendicular to the first direction is in the range of 10% to 60%.

[0020] In one embodiment, on a cross-section perpendicular to the first direction, the average equivalent diameter of all the airflow channels with an equivalent diameter greater than or equal to 0.01 mm is in the range of 0.05 mm to 0.5 mm; and / or,

[0021] The cross-section parallel to the first direction includes a plurality of pores, and the average equivalent diameter of the pores with an equivalent diameter greater than or equal to 0.01 mm is in the range of 0.01 mm to 0.05 mm.

[0022] In one embodiment, the base body has an elastic recovery in the radial direction in the range of 76% to 98%; and / or,

[0023] The base body has a radial hardness in the range of 70% to 95%.

[0024] In one embodiment, the base body has a tensile strength in the first direction in the range of 5 kN / m to 30 kN / m; and / or,

[0025] The base body has a tensile strength in a direction perpendicular to the first direction in the range of 0.5 kN / m to 10 kN / m.

[0026] In one embodiment, the base body has a porosity in the range of 20% to 90%; and / or,

[0027] The base body has a density in the range of 0.4 g / cm 3 to 1.2 g / cm 3 .

[0028] In one embodiment, the base body has a thermal conductivity in the range of 0.1 W / m.k to 0.3 W / m.k; and / or,

[0029] The base body has a specific heat capacity in the range of 1.0 kJ / (kg.K) to 3.8 kJ / (kg.K).

[0030] In one embodiment, the at least one functional segment comprises a front plug segment, the front plug segment being located at a distal lip end of the base segment,

[0031] The front plug segment is configured to be formed from the base body preparation.

[0032] In one embodiment, the front plug segment is at least partially loaded with at least one of tobacco powder, non-tobacco plant powder, flavourant, flavourant, nicotine or aerosol generating agent.

[0033] In one embodiment, the at least one functional segment comprises a cooling segment, the cooling segment being located at a proximal lip end of the base segment,

[0034] The cooling segment is configured to be formed from the base body preparation.

[0035] In one embodiment, the cooling segment is at least partially loaded with at least one of tobacco powder, non-tobacco plant powder, flavourant, flavourant, nicotine or aerosol generating agent.

[0036] In one embodiment, the cooling segment is configured as a hollow tube having a hollow channel inside, the tube wall of the hollow tube having a plurality of the airflow channels inside,

[0037] the equivalent pore size of the hollow channel is in the range of 2mm to 10mm, or

[0038] the thickness of the tube wall of the hollow tube is in the range of 1mm to 3mm.

[0039] In one implementation, the at least one functional segment further comprises a filter segment, the filter segment being located at the proximal end of the cooling segment,

[0040] the filter segment is configured to be formed by the base material.

[0041] In one implementation, the cooling segment and the filter segment are integrally formed.

[0042] In one implementation, the aerosol generating article further comprises a filter segment, the filter segment being located at the proximal end of the aerosol generating article, the filter segment being configured to be formed by the base material, and the filter segment and the substrate segment being an integral structure.

[0043] In one implementation, the at least one functional segment comprises a filter segment, a pre-segment and a cooling segment, at least one of the filter segment, the pre-segment and the cooling segment being configured to be formed by the base material.

[0044] A second aspect of the embodiments of the present disclosure provides an aerosol generating system, wherein the aerosol generating system comprises:

[0045] an aerosol generating device;

[0046] The aerosol generating article described above, the aerosol generating device comprising a heating element for heating the aerosol generating article to generate an aerosol.

[0047] The aerosol generating article provided by the embodiments of the present disclosure comprises a substrate segment and at least one functional segment, the substrate segment being used to generate an aerosol. By configuring the functional segment to be formed by at least one base material formed by a plant comprising a plurality of natural straight-through holes arranged in parallel, the natural straight-through holes of the plant can form the airflow channel of the base material, so that the functional segment has a proper resistance. In addition, the functional segment formed by the plant comprising the natural straight-through holes has a certain high-temperature resistance, which can improve the structural stability of the functional segment and prevent the functional segment from being deformed and melted after being heated. To some extent, the release of odor, the influence of the resistance caused by the collapse of the airflow channel, and the blockage of the airflow channel can be improved, thereby improving the user experience. In addition, it is also beneficial to reduce costs and improve production efficiency. More importantly, the natural straight-through holes are beneficial to the conduction and transmission efficiency of the airflow and are beneficial to improving the amount of aerosol. BRIEF DESCRIPTION OF DRAWINGS

[0048] FIG. 1 is a structural schematic diagram of an aerosol generating system according to some embodiments of the present disclosure;

[0049] FIG. 2 is an exploded view of an aerosol generating article according to a first embodiment of the disclosure;

[0050] FIG. 3 is an exploded view of an aerosol generating article according to a second embodiment of the disclosure;

[0051] FIG. 4 is an exploded view of an aerosol generating article according to a third embodiment of the disclosure;

[0052] FIG. 5 is an exploded view of an aerosol generating article according to a fourth embodiment of the disclosure;

[0053] FIG. 6 is an exploded view of an aerosol generating article according to a fifth embodiment of the disclosure;

[0054] FIG. 7 is an exploded view of an aerosol generating article according to a sixth embodiment of the disclosure;

[0055] FIG. 8 is an exploded view of an aerosol generating article according to a seventh embodiment of the disclosure;

[0056] FIG. 9 is an exploded view of an aerosol generating article according to an eighth embodiment of the disclosure.

[0057] Reference numeral 10, aerosol generating article; 11, substrate segment; 12, filter segment; 13, temperature reduction segment; 131, hollow passage; 14, front plug segment; 15, base; 151, airflow passage; 20, aerosol generating device; 21, accommodation chamber; 22, heating element; 23, power supply assembly; 100, aerosol generating system. DETAILED DESCRIPTION

[0058] In order to make the objects, technical solutions and advantages of the embodiments of the disclosure clearer, the technical solutions in the embodiments of the disclosure will be described clearly below with reference to the drawings in the embodiments of the disclosure. The following embodiments are only used to illustrate the technical solutions of the disclosure more clearly, and therefore only serve as examples, but cannot be used to limit the protection scope of the disclosure. Based on the embodiments in the disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the protection scope of the disclosure.

[0059] In the description of the embodiments of the disclosure, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the disclosure, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0060] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the disclosure. The appearances of the phrase“in an embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the other embodiments. It is explicitly contemplated that embodiments described herein can be combined with each other in their individual aspects.

[0061] In the description of the embodiments of the disclosure, the term“and / or” is only a description of an association relationship of associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character“ / ” herein generally represents an“or” relationship between the front and rear associated objects.

[0062] In the description of the embodiments of the disclosure, unless otherwise explicitly specified and limited, the technical terms“mounting”,“connection”,“connecting”,“fixing” and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the disclosure can be understood according to the specific circumstances.

[0063] In the description of the embodiments of the disclosure, unless otherwise explicitly specified and limited, the technical term“contact” should be understood in a broad sense, which can be direct contact or contact through an intermediate medium layer, and can be contact between two objects in contact without interaction force, or contact between two objects in contact with interaction force.

[0064] In the description of the disclosure, the“first direction” orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It needs to be understood that these orientation terms are only for the convenience of describing the disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the disclosure.

[0065] The disclosure will be further described in detail below in combination with the drawings and specific embodiments.

[0066] Referring to FIGS. 2-9, the present disclosure provides an aerosol generating article 10 including a substrate segment 11 and at least one functional segment. The substrate segment 11 is configured to generate an aerosol. The at least one functional segment is arranged along a first direction with the substrate segment 11, and the at least one functional segment is configured in a separate structure from the substrate segment 11. The at least one functional segment is configured to be formed from at least one substrate 15 extending along the first direction, and the substrate 15 is configured to be formed from a plant including a plurality of natural through-holes arranged in parallel. The substrate 15 has a plurality of airflow passages 151 extending along the first direction in the interior of the substrate 15, and the natural through-holes form the airflow passages 151. It should be noted that the plant having the natural through-holes needs to be subjected to a certain pretreatment before being made into the substrate 15, such as foaming treatment, deodorization, etc.

[0067] In the present disclosure, the substrate segment 11 is configured to be suitable for a heating-not-burning mode of smoking.

[0068] The present disclosure also provides an aerosol generating system 100, referring to FIG. 1, the aerosol generating system 100 includes the aerosol generating article 10 of any of the embodiments of the present disclosure and an aerosol generating device 20.

[0069] The aerosol generating article 10 is configured to be used in cooperation with the aerosol generating device 20, and the aerosol generating device 20 is configured to heat the aerosol generating article 10.

[0070] The aerosol generating article 10 is configured to generate an aerosol when heated for a user to smoke.

[0071] In the present disclosure, the aerosol generating article 10 is generally cylindrical. The cylindrical shape can be a circular cylinder (i.e., the cross-sectional shape is circular), a prism (i.e., the cross-sectional shape is polygonal), an elliptical cylinder (i.e., the cross-sectional shape is elliptical), or an irregular cylinder, etc., which is not limited herein.

[0072] Here, the number of the aerosol generating articles 10 in the aerosol generating device 20 can be one or more.

[0073] In the present disclosure, the plurality means two or more.

[0074] Exemplarily, the substrate segment 11 includes an aerosol generating agent configured to form an aerosol.

[0075] Exemplarily, the substrate segment 11 extends along a first direction. Exemplarily, the first direction is the direction indicated by L in FIGS. 1-9.

[0076] It should be noted that the aerosol generating article 10 is consistent with the extension direction of the substrate segment 11. That is, the aerosol generating article 10 also extends along the first direction.

[0077] The aerosol generating article 10 comprises at least one functional segment, which is arranged at one end of the substrate segment 11 along the first direction.

[0078] Referring to FIG. 1, the first direction is the arrangement direction of the substrate segment 11 and the functional segment, the aerosol generating article 10 is inserted into the aerosol generating device 20 along the first direction, the substrate segment 11 is closer to the heating element 22, the aerosol generating article 10 is also taken out of the aerosol generating device 20 along the first direction, and the length of the substrate segment 11 along the first direction can be longer, shorter, or the same as the length along other directions, which needs to be designed according to different aerosol generating devices 20.

[0079] For example, when the appearance profile of the substrate segment 11 is cylindrical, the first direction is the axial direction of the substrate segment 11. It should be noted that the axial length of the substrate segment 11 can be smaller than its diameter.

[0080] For another example, when the appearance profile of the substrate segment 11 is cuboid, the first direction is still the direction defined above, i.e., the arrangement direction of the substrate segment 11 and the functional segment, or the direction of taking and placing the aerosol generating article 10 on the aerosol generating device 20. The first direction of the substrate segment 11 can be any one of the length, width, or height of the cuboid.

[0081] The functional segment can be prepared by one base body 15 or by assembling multiple base bodies 15.

[0082] The base body 15 is configured to be prepared from a plant containing multiple parallel natural through holes. That is, the base body 15 manufactured from the plant itself has more natural through holes, and the natural through holes form the airflow passage 151. In this way, the base body 15 is facilitated to form more airflow passages 151, thereby being beneficial to improve the production efficiency of the functional segment and the transmission efficiency of the gas or aerosol in the functional segment. In addition, the base body 15 is made of a plant from a natural source, which is biodegradable and environmentally friendly.

[0083] Since the plant containing multiple parallel natural through holes has a higher porosity, the functional segment prepared from the base body 15 has a proper resistance, thereby improving the smoking experience.

[0084] The base body 15 is a structural framework, and the base body 15 does not generate aerosol.

[0085] In addition, the raw material source of the base body 15 is relatively extensive, and the cost of acquisition is relatively low, thereby being beneficial to reduce the manufacturing cost of the functional segment and improve the production efficiency; and the temperature resistance of the base body 15 itself is relatively good, and basically no peculiar smell is generated after heating, thereby being beneficial to improve the pure taste of the aerosol.

[0086] Exemplarily, the base body 15 comprises at least one of bamboo, wood, rattan, wisteria, akebia, grapevine, Astragalus root, Codonopsis root, rush stem, water onion stem, sugarcane, corn, sorghum, and reed. That is, the base body 15 can be one of bamboo, wood, rattan, wisteria, akebia, grapevine, Astragalus root, Codonopsis root, rush stem, water onion stem, sugarcane, corn, sorghum, and reed, or can be a plurality of bamboo, wood, rattan, wisteria, akebia, grapevine, Astragalus root, Codonopsis root, rush stem, water onion stem, sugarcane, corn, sorghum, and reed.

[0087] Exemplarily, the base body 15 is prepared by pretreatment of a plant comprising a plurality of natural straight-through holes arranged in parallel.

[0088] Exemplarily, the pretreatment refers to acid washing of the plant, and then foaming treatment of the plant, so as to remove or reduce lignin, hemicellulose, and the like in the plant. The pretreated plant has a characteristic aroma that can be removed.

[0089] Since the functional segment and the substrate segment 11 are in a split structure, the functional segment and the substrate segment 11 can be treated respectively according to requirements, and the influence on each other in the preparation process is reduced.

[0090] The aerosol generating article 10 provided by the embodiments of the present disclosure comprises a substrate segment 11 and at least one functional segment, the substrate segment 11 is used for generating an aerosol, the functional segment is configured by at least one base body 15, and the base body 15 is prepared by a plant comprising a plurality of natural straight-through holes arranged in parallel. Therefore, the natural straight-through holes of the plant form the airflow channel 151 of the base body 15, so that the functional segment has a proper resistance to draw, and the functional segment formed by the plant comprising the natural straight-through holes has a certain high-temperature resistance, which can improve the structural stability of the functional segment, and the functional segment is not easy to deform and melt after being heated, and the release of odor, the influence of the resistance to draw due to the collapse of the airflow channel 151, and the blockage of the airflow channel 151 are improved to some extent, thereby improving the user experience. In addition, the natural straight-through holes are beneficial to the transmission efficiency of gas and aerosol in the functional segment.

[0091] In some embodiments, the substrate segment 11 comprises a base body 15 and a load, the base body 15 is used for loading the load, and the load at least comprises an aerosol generating agent.

[0092] The load can be a load liquid, the base body 15 of the substrate segment 11 can adsorb the load liquid, the adsorption method can be soaking, injection, spraying, or dropwise addition, and the load liquid comprises one or more of tobacco pulp, non-tobacco plant pulp, an aerosol generating agent, a flavoring agent, a mouthfeel agent, and nicotine.

[0093] The manner in which the substrate 15 is loaded with the load is not limited. For example, the load can be injected into the substrate 15 by means of quantitative injection; or the substrate 15 can be immersed in a load slurry in liquid form and then taken out and dried to be shaped; or the substrate 15 can be immersed in a load slurry in liquid form, filled by pressure, and then dried to be shaped.

[0094] It should be noted that after the substrate section 11 is shaped, the load is condensed into a solid or colloidal state.

[0095] The load at least includes an aerosol generating agent, which is used to generate an aerosol when heated for a user to inhale.

[0096] In some embodiments, the load can further include a smoking agent component. The smoking agent component is used to generate smoke when heated, whereby the smoking agent component cooperates with the aerosol generating agent and the plant component to ensure the generation of the aerosol.

[0097] Exemplarily, the smoking agent component can include one or more combinations of monohydric alcohol (such as menthol), polyhydric alcohol (such as propylene glycol, glycerol, triethylene glycol, 1,3-butanediol, and tetraethylene glycol), ester of polyhydric alcohol (such as glyceryl triacetate, triethyl citrate, glycerol diacetate mixture, triethyl citrate, benzyl benzoate, glyceryl tributyrate), monobasic acid, dibasic acid, polybasic acid (such as lauric acid, myristic acid), or aliphatic ester of polybasic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, triactin, meso-erythritol, glycerol diacetate mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenyl acetate, ethyl vanillate, glyceryl tributyrate, lauryl acetate).

[0098] Exemplarily, the substrate 15 of the substrate section 11 can be cylindrical, the substrate section 11 has a size of 5 mm-60 mm in the first direction, and the substrate section 11 has a diameter of 4 mm-15 mm. Preferably, the substrate section 11 has a size of 12 mm-30 mm in the first direction, and the substrate section 11 has a diameter of 5 mm-8.5 mm.

[0099] The matrix 15 of the substrate section 11 is a plant comprising a plurality of natural through-holes arranged in parallel, the equivalent diameter of which is in the range of 1 um to 2 mm, and the natural through-holes account for more than 90% of the total through-holes; in a cross section perpendicular to the first direction, the ratio of the sum of the cross-sectional areas of all the airflow channels 151 with an equivalent diameter in the range of 0.01 mm to 0.3 mm to the cross-sectional area of the matrix 15 is in the range of 10% to 60%; in a cross section perpendicular to the first direction, the average equivalent diameter of all the airflow channels 151 with an equivalent diameter greater than or equal to 0.01 mm is in the range of 0.05 mm to 0.5 mm; in a cross section parallel to the first direction, the matrix 15 comprises a plurality of pores, and the average equivalent diameter of the pores with an equivalent diameter greater than or equal to 0.01 mm is in the range of 0.01 mm to 0.05 mm; the matrix 15 of the substrate section 11 has a radial compression resilience, and the elastic recovery rate is in the range of 76% to 98%; the matrix 15 of the substrate section 11 has a certain radial hardness, and the radial hardness is in the range of 70% to 95%; the tensile strength of the matrix 15 of the substrate section 11 in the axial direction is in the range of 1 kN / m to 8 kN / m; and the tensile strength of the matrix 15 of the substrate section 11 in the direction perpendicular to the first direction is in the range of 0.05 kN / m to 3 kN / m.

[0100] Exemplarily, the matrix 15 of the substrate section 11 can be compressed into a single cylindrical or cuboid shape, can be compressed into two or more cylinders or cuboids spliced together, or can be rolled into a sheet shape with the same thickness or different gradient thicknesses. The volume compression ratio before and after compression is 4:1, and preferably 1.5:1.

[0101] In other embodiments, the substrate section 11 is configured to be prepared from a tobacco particle cylinder, a tobacco sheet cylinder, a tobacco extrusion cylinder, a herbal particle cylinder, a herbal sheet cylinder, a herbal extrusion cylinder, etc. The size of the substrate section 11 in the first direction is 5 mm to 60 mm, and the diameter of the substrate section 11 is 4 mm to 15 mm. Preferably, the size of the substrate section 11 in the first direction is 12 mm to 30 mm, and the diameter of the substrate section 11 is 5 mm to 8.5 mm.

[0102] In some embodiments, the porosity of the matrix 15 is in the range of 50% to 98%.

[0103] The porosity of the matrix 15 can be any one of 50%, 52%, 53%, 54%, 55%, 58%, 60%, 61%, 63%, 64%, 65%, 68%, 70%, 72%, 73%, 75%, 77%, 80%, 82%, 83%, 85%, 86%, 90%, 92%, 93%, 95%, 98%, or any point value between any two of them.

[0104] It should be noted that the porosity of the substrate 15 refers to the ratio of the sum of the volumes of all airflow channels 151 inside the substrate 15 to the volume of the substrate 15.

[0105] The porosity can be measured according to the method specified in YC / T 473-2013 “Determination of apparent density, true density and internal pore volume of tobacco shred”.

[0106] Here, when the porosity of the substrate 15 is too small, it can result in a large resistance of the substrate 15, which greatly limits the generation and migration of aerosol, and when the porosity of the substrate 15 is too large, it can result in a small resistance of the substrate 15, which can result in insufficient stiffness of the substrate 15.

[0107] In this way, by setting the porosity of the substrate 15 to be in the range of 50% to 98%, the resistance of the substrate 15 can be appropriate, which is conducive to the generation and migration of aerosol and has a certain stiffness.

[0108] Preferably, the porosity of the substrate 15 is in the range of 80% to 95%.

[0109] In some embodiments, the density of the substrate 15 is in the range of 0.05 g / cm 3 to 0.3 g / cm 3 .

[0110] The density of the substrate 15 can be any one of 0.05 g / cm 3 , 0.06 g / cm 3 , 0.08 g / cm 3 , 0.1 g / cm 3 , 0.12 g / cm 3 , 0.13 g / cm 3 , 0.15 g / cm 3 , 0.16 g / cm 3 , 0.17 g / cm 3 , 0.2 g / cm 3 , 0.22 g / cm 3 , 0.23 g / cm 3 , 0.24 g / cm 3 , 0.25 g / cm 3 , 0.26 g / cm 3 , 0.28 g / cm 3 , 0.3 g / cm 3 or any point value between any two of them.

[0111] Here, when the density of the substrate 15 is too large, the substrate 15 can have a large resistance, and thus the load amount of the load can be small, which can result in a small amount of smoke and limit the generation and migration of aerosol. When the density of the substrate 15 is too small, the substrate 15 can have insufficient stiffness, and thus the amount of smoke can be small, and the substrate 15 can have poor consistency and low smoking satisfaction.

[0112] In this way, by setting the density of the substrate 15 to be in the range of 0.05 g / cm 3 to 0.3 g / cm 3 , the resistance, stiffness, and load amount of the substrate 15 can be considered, and the consistency and smoking satisfaction of the aerosol generating article 10 can be improved.

[0113] Preferably, the density of the substrate 15 is in the range of 0.1 g / cm 3 to 0.24 g / cm 3 .

[0114] In some embodiments, the gas flow passages 151 with an equivalent diameter in the range of 1 μm to 2 mm account for more than 90% of all the gas flow passages 151 in the substrate 15.

[0115] That is, the ratio of the number of the gas flow passages 151 with an equivalent diameter in the range of 1 μm to 2 mm to the number of all the gas flow passages 151 in the substrate 15 is greater than or equal to 90%.

[0116] It can be understood that the gas flow passages 151 with an equivalent diameter less than 1 μm are easily blocked by the load or other substances. If there are too many gas flow passages 151 with an equivalent diameter less than 1 μm, the resistance of the substrate 15 after loading the load can be large, and the resistance can decrease during use, and the load amount can also decrease, which can affect the consistency of the taste. If there are too many gas flow passages 151 with an equivalent diameter greater than 2 mm, the resistance of the substrate 15 can be small, and the load amount of the substrate 15 can also decrease.

[0117] Therefore, by setting the ratio of the number of the gas flow passages 151 with an equivalent diameter in the range of 1 μm to 2 mm to the number of all the gas flow passages 151 in the substrate 15 to be greater than or equal to 90%, the resistance and load amount of the substrate 15 can be considered, and the change in the resistance of the substrate 15 during use can be reduced, which can improve the consistency of the taste.

[0118] It should be noted that the natural through hole of the plant can be exactly the same as the gas flow passage 151 of the substrate 15, or the natural through hole of the plant can be processed to form the gas flow passage 151 of the substrate 15, that is, the size and / or shape of the natural through hole are different from those of the gas flow passage 151.

[0119] The natural through hole of the plant can extend only in the first direction, or can extend in the radial direction of the plant.

[0120] In some embodiments, in a cross section perpendicular to the first direction, the ratio of the sum of cross-sectional areas of all airflow channels 151 with an equivalent diameter in the range of 0.01 mm to 0.3 mm to the cross-sectional area of the substrate 15 is in the range of 10% to 60%.

[0121] In this way, the suction resistance of the substrate 15 can be appropriately adjusted, which is conducive to the generation and migration of aerosol and has a certain stiffness.

[0122] In some embodiments, in a cross section perpendicular to the first direction, the average equivalent diameter of all airflow channels 151 with an equivalent diameter greater than or equal to 0.01 mm is in the range of 0.05 mm to 0.5 mm.

[0123] In some embodiments, in a cross section parallel to the first direction, the average equivalent diameter of the pores with an equivalent diameter greater than or equal to 0.01 mm is in the range of 0.01 mm to 0.05 mm. The pores here can be considered as airflow channels 151 with small length.

[0124] In some embodiments, the elastic recovery rate of the substrate 15 in the radial direction is in the range of 76% to 98%.

[0125] The elastic recovery rate of the substrate 15 in the radial direction refers to the percentage of the original shape or size that the substrate 15 can recover after deformation under external force. The higher the value, the stronger the resistance to permanent deformation.

[0126] By setting the elastic recovery rate of the substrate 15 in the radial direction to be in the range of 76% to 98%, the structural strength, stability and porosity of the substrate 15 can be considered.

[0127] In some embodiments, the radial hardness of the substrate 15 is in the range of 70% to 95%.

[0128] The radial hardness is a mechanical property index of the substrate 15 that locally resists indentation deformation, reflecting the ability of the substrate 15 to resist surface deformation under pressure.

[0129] The radial hardness of the substrate 15 can be measured by indentation method: applying radial pressure to the surface of the substrate 15, and calculating the hardness value according to the indentation depth or area.

[0130] By setting the radial hardness of the substrate 15 to be in the range of 70% to 95%, the structural strength, stability and porosity of the substrate 15 can be considered.

[0131] In some embodiments, the tensile strength of the base 15 in the first direction is in the range of 5 kN / m to 30 kN / m.

[0132] Tensile strength, also known as tensile strength, is the breaking force per unit area.

[0133] The tensile strength is the maximum load that causes the base 15 to break from the original cross section in the first direction.

[0134] The measurement standard can use a horizontal tensile strength measuring instrument.

[0135] The tensile strength of the base 15 in the first direction can be a point value of any one of 5 kN / m, 6 kN / m, 7 kN / m, 8 kN / m, 9 kN / m, 10 kN / m, 12 kN / m, 13 kN / m, 15 kN / m, 16 kN / m, 17 kN / m, 18 kN / m, 19 kN / m, 20 kN / m, 21 kN / m, 23 kN / m, 25 kN / m, 26 kN / m, 27 kN / m, 29 kN / m, 30 kN / m or a point value between any two of them.

[0136] Here, by setting the tensile strength of the base 15 in the first direction to be in the range of 5 kN / m to 30 kN / m, the situation that the base 15 breaks and falls off can be improved, and the smoke amount, the puffing stability and the yield can be improved. In addition, in the embodiment in which the substrate section 11 includes the base 15, the substrate section 11 can also be a homogeneous system, and the aerosol can be continuously and uniformly generated.

[0137] In some embodiments, the tensile strength of the base 15 in the direction perpendicular to the first direction is in the range of 0.5 kN / m to 10 kN / m.

[0138] The tensile strength of the base 15 in the direction perpendicular to the first direction can be a point value of any one of 0.5 kN / m, 0.6 kN / m, 0.7 kN / m, 0.8 kN / m, 0.9 kN / m, 1 kN / m, 1.5 kN / m, 2 kN / m, 2.5 kN / m, 3 kN / m, 3.5 kN / m, 4 kN / m, 4.5 kN / m, 5 kN / m, 6 kN / m, 7 kN / m, 8 kN / m, 9 kN / m, 10 kN / m or a point value between any two of them.

[0139] Here, by setting the tensile strength of the base 15 in the direction perpendicular to the first direction to be in the range of 0.5 kN / m to 10 kN / m, the structural strength and the porosity of the base 15 can be considered.

[0140] In some embodiments, the porosity of the substrate segment 11 is in a range of 20% to 90%.

[0141] The porosity of the substrate segment 11 can be a point value of any one of 20%, 25%, 30%, 35%, 38%, 40%, 43%, 44%, 45%, 48%, 50%, 52%, 53%, 54%, 55%, 58%, 60%, 61%, 63%, 64%, 65%, 68%, 70%, 72%, 73%, 75%, 77%, 80%, 82%, 83%, 85%, 86%, 90% or a point value between any two of them.

[0142] Here, when the porosity of the substrate segment 11 is too small, it can cause the substrate segment 11 to have a large resistance to draw, which has a large restriction on the generation and migration of aerosol, and when the porosity of the substrate segment 11 is too large, it can cause the amount of smoke to be small, and the satisfaction of smoking to be low.

[0143] In this way, by setting the porosity of the substrate segment 11 to be in a range of 20% to 90%, the resistance to draw of the substrate segment 11 can be appropriate, and the amount of smoke can be certain, which is beneficial to improve the satisfaction of smoking.

[0144] In some embodiments, the density of the substrate segment 11 is in a range of 0.4 g / cm 3 to 1.2 g / cm 3 .

[0145] The density of the substrate segment 11 can be a point value of any one of 0.4 g / cm 3 , 0.45 g / cm 3 , 0.5 g / cm 3 , 0.55 g / cm 3 , 0.6 g / cm 3 , 0.63 g / cm 3 , 0.65 g / cm 3 , 0.7 g / cm 3 , 0.75 g / cm 3 , 0.8 g / cm 3 , 0.82 g / cm 3 , 0.85 g / cm 3 , 0.9 g / cm 3 , 0.95 g / cm 3 , 0.98 g / cm 3 , 1.0 g / cm 3 , 1.05 g / cm 3 , 1.1 g / cm 3 , 1.15 g / cm 3 , 1.2 g / cm 3 or a point value between any two of them.

[0146] Here, when the density of the substrate segment 11 is too large, it can cause the substrate segment 11 to have a large resistance, and a small amount of smoke, which has a large limitation on the generation and migration of aerosol. When the density of the substrate segment 11 is too small, it can cause the substrate segment 11 to have insufficient stiffness, a small amount of smoke, and poor consistency of the substrate segment 11, and low satisfaction of smoking.

[0147] In this way, by setting the density of the substrate segment 11 to be in the range of 0.4 g / cm 3 to 1.2 g / cm 3 , the resistance of the substrate segment 11 can be appropriately set, and the substrate segment 11 has a certain stiffness and a certain amount of smoke, which is beneficial to improve the consistency and satisfaction of the substrate segment 11.

[0148] In some embodiments, the thermal conductivity of the substrate segment 11 is in the range of 0.1 W / m.k to 0.3 W / m.k.

[0149] The thermal conductivity of the substrate segment 11 can be a point value of any one of 0.1 W / (m.K), 0.12 W / (m.K), 0.13 W / (m.K), 0.15 W / (m.K), 0.18 W / (m.K), 0.2 W / (m.K), 0.22 W / (m.K), 0.23 W / (m.K), 0.25 W / (m.K), 0.26 W / (m.K), 0.28 W / (m.K), 0.3 W / (m.K) or a point value between any two of them.

[0150] The determination of the thermal conductivity of the substrate segment 11 can be determined according to the method specified in GB / T 22588-2008 "Flash Method for Measuring Thermal Diffusivity or Thermal Conductivity".

[0151] The thermal conductivity of the substrate segment 11 affects the heat transfer speed of the substrate segment 11. In the case of the same thickness and the same drying intensity of the substrate segment 11, the thermal conductivity affects the drying rate. The faster the moisture is dried, the smaller the loss of aroma. If the thermal conductivity of the substrate segment 11 is less than 0.1 W / (m.K), the substrate segment 11 needs a long time to dry, and the loss of essence is large. If the thermal conductivity of the substrate segment 11 is greater than 0.3 W / (m.K), the heat transfer speed is too fast, the heat of the surface layer will be quickly conducted to the entire substrate segment 11, the medium temperature of the first few puffs is low, the amount of smoke is small, and the consistency of the amount of smoke is poor, and the amount of smoke of the last few puffs is small.

[0152] In some embodiments, the specific heat capacity of the substrate segment 11 is in the range of 1.0 kJ / (kg.K) to 3.8 kJ / (kg.K).

[0153] Exemplarily, the specific heat capacity of the substrate section 11 can be determined according to the method specified in GB / T 19466.4-2016 “Plastics - Differential scanning calorimetry (DSC) - Part 4: Determination of specific heat capacity”.

[0154] It should be noted that the specific heat capacity is a physical quantity describing the heat absorption or heat dissipation capacity of a substance. The specific heat capacity refers to the heat absorbed or released by a unit mass of a certain substance when its temperature is raised or lowered by 1°C. The greater the specific heat capacity of the substrate section 11, the more heat needs to be absorbed during heating, which means that the heating element 22 needs to increase more heat, and the temperature rise of the substrate section 11 itself during heating is slower, which will lead to slow release of aerosol, small amount of smoke in the first few puffs, and easy release of volatile components (mainly aroma components) in the early stage of smoking, resulting in poor consistency of aroma and smoke amount before and after smoking.

[0155] Exemplarily, the specific heat capacity of the substrate section 11 can be 1.0 KJ / (kg·K), 1.1 KJ / (kg·K), 1.2 KJ / (kg·K), 1.3 KJ / (kg·K), 1.5 KJ / (kg·K), 1.6 KJ / (kg·K), 1.8 KJ / (kg·K), 2.0 KJ / (kg·K), 2.1 KJ / (kg·K), 2.2 KJ / (kg·K), 2.3 KJ / (kg·K), 2.5 KJ / (kg·K), 2.6 KJ / (kg·K), 2.8 KJ / (kg·K), 3.0 KJ / (kg·K), 3.2 KJ / (kg·K), 3.5 KJ / (kg·K), 3.6 KJ / (kg·K), 3.8 KJ / (kg·K), any point value of any one of them or any point value between any two of them.

[0156] For example, if the specific heat capacity of the substrate section 11 is less than 1.0 KJ / (kg·K), the temperature of the substrate section 11 in the peripheral heating area rises too fast, which may cause problems such as collapse and charring of the structure of the substrate section 11, affecting the release of smoke components and the generation of unpleasant odor; if the specific heat capacity of the substrate section 11 is higher than 3.8 KJ / (kg·K), the peripheral substrate section 11 may be slow to heat up, resulting in small initial smoke amount.

[0157] By setting the specific heat capacity of the substrate segment 11 to be in the range of 1.0 kJ / (kg·K) to 3.8 kJ / (kg·K), the temperature rise of the substrate segment 11 can be appropriately adapted to match the volatile component (mainly aroma component) volatilization rate of the substrate segment 11 to the aerosol generation rate, improve the consistency of aroma and smoke amount before and after smoking, and also appropriately adapt the heat transfer rate between the substrate segments 11, reduce the temperature difference between the region of the substrate segment 11 close to the heat source and the region away from the heat source, and improve the problems of increased release of burnt taste substances, structure collapse, and charring of the substrate segment 11 due to local overheating, and the problems of insufficient extraction (reduced release of active ingredients) and small initial smoke amount due to local low temperature.

[0158] Here, the number of functional segments can be one or multiple.

[0159] In some embodiments, referring to FIG. 2, the at least one functional segment includes a front plug segment 14. The front plug segment 14 is located at the distal lip end of the substrate segment 11. In the following embodiments, the substrate segment 11 can be a substrate segment composed of the above-mentioned matrix 15, or a substrate segment composed of other matrices, such as a tobacco or herbal substrate segment in any form, which is not limited herein.

[0160] The front plug segment 14 is arranged at one end of the substrate segment 11 and at the distal lip end of the aerosol generating article 10. On the one hand, during use, the front plug segment 14 can effectively reduce the probability of the substrate segment 11 falling out of the outer wrapper; on the other hand, it can also effectively avoid the problem of aerosol condensation flowing downward and remaining in the accommodation chamber 21 of the aerosol generating device 20, thereby causing internal pollution of the accommodation chamber 21 and making it difficult to clean, and the problem of flavor carryover when smoking aerosol generating articles 10 of different flavors.

[0161] In some embodiments, the front plug segment 14 is configured to be prepared from the matrix 15.

[0162] Due to the characteristic of plants containing a plurality of naturally straight-through holes arranged in parallel, the front plug segment 14 using plants as the matrix 15 has relatively more naturally straight-through holes inside, which can increase the surface area of the front plug segment 14. The front plug segment 14 can adsorb the backflow condensed aerosol, improve the situation of the aerosol condensate flowing back to the accommodation chamber 21 of the aerosol generating device 20, i.e., improve the anti-leakage effect of the front plug segment 14.

[0163] In addition, since the front plug segment 14 is arranged close to the substrate segment 11, it can improve the situation of deformation and melting of the front plug segment 14 after the temperature of the substrate segment 11 is transferred to the front plug segment 14, and can improve the situation of releasing odors, affecting the resistance due to the collapse of the airflow passage 151, and blocking the airflow passage 151.

[0164] The density of the front plug section 14 is in the range of 0.05 g / cm 3 -0.25 g / cm3. The front plug section 14 in this density range can balance the leakage prevention effect and the resistance.

[0165] Exemplarily, the base 15 of the front plug section 14 can be cylindrical, the size of the front plug section 14 in the first direction is 5-10 mm, and the diameter of the front plug section 14 is 4-15 mm.

[0166] The base 15 of the front plug section 14 is a plant containing a plurality of parallel natural through holes, the equivalent diameter of the natural through holes is 1-2 mm; in the cross section perpendicular to the first direction, the ratio of the sum of the cross-sectional areas of all airflow channels 151 with an equivalent diameter in the range of 0.01-0.3 mm to the cross-sectional area of the base 15 is in the range of 10%-60%; in the cross section perpendicular to the first direction, the average equivalent diameter of all airflow channels 151 with an equivalent diameter greater than or equal to 0.01 mm is in the range of 0.05-0.5 mm; in the cross section parallel to the first direction, a plurality of pores are included, and the average equivalent diameter of the pores with an equivalent diameter greater than or equal to 0.01 mm is in the range of 0.01-0.05 mm; the base 15 of the front plug section 14 has radial compression resilience, and the elastic recovery rate is in the range of 76%-98%; the base 15 of the front plug section 14 has a certain radial hardness, and the radial hardness is in the range of 70%-95%; the tensile strength of the base 15 of the front plug section 14 in the axial direction is in the range of 5-30 kN / m; and the tensile strength of the base 15 of the front plug section 14 in the direction perpendicular to the first direction is in the range of 0.5-10 kN / m.

[0167] In other embodiments, referring to FIG. 5, the front plug section 14 is configured to be prepared from materials such as acetate fiber, polylactic acid, polyester, etc., the size of the front plug section 14 in the first direction is 5-10 mm, the diameter of the front plug section 14 is 4-15 mm, and the filter section 12 is composed of the base 15.

[0168] In some embodiments, the front plug section 14 is at least partially loaded with at least one of tobacco powder, non-tobacco plant powder, spices, essences, nicotine, or aerosol generating agents.

[0169] In some embodiments, the front plug section 14 contains a certain load, some of which is actively adsorbed, and in some cases, the front plug section 14 itself does not adsorb, but after the front plug section is in contact with the base section, a small amount of adsorption occurs.

[0170] In this way, the aerosol of the base section 11 can be supplemented, and the taste and smoke performance consistency of each puff can be improved.

[0171] That is, the foreplug segment 14 can be partially loaded with at least one of tobacco powder, non-tobacco plant powder, flavor, essence, nicotine or aerosol generating agent, for example, loaded with at least one of tobacco powder, non-tobacco plant powder, flavor, essence, nicotine or aerosol generating agent in the region close to the substrate segment 11, and can also be entirely loaded with at least one of tobacco powder, non-tobacco plant powder, flavor, essence, nicotine or aerosol generating agent.

[0172] Exemplarily, the at least one functional segment includes a temperature reduction segment 13 located at the lip proximal end of the substrate segment 11.

[0173] The temperature reduction segment 13 can play a role in reducing the temperature of the aerosol flowing therethrough, improving the "burning mouth" phenomenon when the user smokes the aerosol.

[0174] The lip proximal end refers to the end of the aerosol generating article 10 close to the user when the user uses the aerosol generating article 10, i.e. the end sucked by the mouth, and the lip distal end refers to the end of the aerosol generating article 10 away from the user when the user uses the aerosol generating article 10. That is, the two ends of the aerosol generating article 10 in the first direction are the lip proximal end and the lip distal end, respectively.

[0175] In some embodiments, referring to FIG. 3, the temperature reduction segment 13 is configured to be formed by the base body 15.

[0176] Due to the characteristic of the plant containing a plurality of naturally straight-through holes arranged in parallel, the temperature reduction segment 13 using the plant as the base body 15 has relatively more naturally straight-through holes inside, which can increase the surface area of the temperature reduction segment 13, thereby improving the temperature reduction effect on the aerosol.

[0177] In addition, since the temperature reduction segment 13 is arranged close to the substrate segment 11, it can improve the situation that the temperature of the substrate segment 11 is transferred to the temperature reduction segment 13 and then deformed and fused, and can improve the situation that the release of odor, the influence of the suction resistance due to the collapse of the airflow passage 151, and the blockage of the airflow passage 151.

[0178] The density of the temperature reduction segment 13 ranges from 0.04 g / cm 3 to 0.25 g / cm3.

[0179] It can be understood that the density of the temperature reduction segment 13 is too low, the processing strength is weak, and the density is too high, which leads to excessive temperature reduction and forms more condensed liquid to affect the passage of the aerosol. Therefore, the temperature reduction segment 13 in the density range can take into account the temperature reduction effect, the processing strength and the suction resistance.

[0180] Exemplarily, the base body 15 of the temperature reduction segment 13 can be cylindrical, the size of the temperature reduction segment 13 in the first direction is 5 mm-10 mm, and the diameter of the temperature reduction segment 13 is 4 mm-15 mm.

[0181] The substrate 15 of the cooling segment 13 is a plant comprising a plurality of natural through-holes arranged in parallel, the natural through-holes having an equivalent diameter of 1 um to 2 mm; in a cross section perpendicular to the first direction, the ratio of the sum of cross-sectional areas of all airflow channels 151 having an equivalent diameter in the range of 0.01 mm to 0.3 mm to the cross-sectional area of the substrate 15 is in the range of 10% to 60%; in a cross section perpendicular to the first direction, the average equivalent diameter of all airflow channels 151 having an equivalent diameter greater than or equal to 0.01 mm is in the range of 0.05 mm to 0.5 mm; in a cross section parallel to the first direction, the substrate 15 comprises a plurality of pores, the average equivalent diameter of the pores having an equivalent diameter greater than or equal to 0.01 mm is in the range of 0.01 mm to 0.05 mm; the substrate 15 of the cooling segment 13 has a radial compression resilience, the elastic recovery rate is in the range of 76% to 98%; the substrate 15 of the cooling segment 13 has a certain radial hardness, the radial hardness is in the range of 70% to 95%; the tensile strength of the substrate 15 of the cooling segment 13 in the axial direction is in the range of 5 kN / m to 30 kN / m; the tensile strength of the substrate 15 of the cooling segment 13 in the direction perpendicular to the first direction is in the range of 0.5 kN / m to 10 kN / m.

[0182] In other embodiments, referring to FIGS. 4 and 5, the cooling segment 13 is configured to be formed of a material such as acetate fiber, polylactic acid, polyester, cellulose paper, etc., the size of the cooling segment 13 in the first direction is 15 mm to 25 mm, the diameter of the cooling segment 13 is 4 mm to 15 mm, and the filter segment 12 is composed of the substrate 15.

[0183] In some embodiments, the cooling segment 13 is at least partially loaded with at least one of tobacco powder, non-tobacco plant powder, spice, essence, nicotine, or aerosol generating agent. In some embodiments, the loading in the cooling segment 13 is adsorbed from the substrate segment 11.

[0184] In this way, the aroma quality can be increased, and the consistency of the amount of smoke per puff can be improved.

[0185] That is, the cooling segment 13 can be partially loaded with at least one of tobacco powder, non-tobacco plant powder, spice, essence, nicotine, or aerosol generating agent, for example, the region close to the substrate segment 11 is loaded with at least one of tobacco powder, non-tobacco plant powder, spice, essence, nicotine, or aerosol generating agent, and the cooling segment 13 can also be entirely loaded with at least one of tobacco powder, non-tobacco plant powder, spice, essence, nicotine, or aerosol generating agent.

[0186] In some embodiments, referring to FIG. 3, the cooling segment 13 is configured as a hollow tube having a hollow channel 131 inside, and the inside of the tube wall of the hollow tube has a plurality of airflow channels 151.

[0187] The inside of the hollow tube is provided with the hollow passage 131, which is beneficial for the aerosol generated by heating the substrate segment 11 to flow through the hollow passage 131 to be cooled.

[0188] In some embodiments, the equivalent pore size of the hollow passage 131 is in the range of 2 mm to 10 mm.

[0189] For example, the equivalent pore size of the hollow passage 131 can be any one of 2 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm or any value between any two of them.

[0190] By setting the equivalent pore size of the hollow passage 131 in the range of 2 mm to 10 mm, the hollow tube can have a better cooling effect on the aerosol, and can also reduce the aerosol remaining in the hollow passage 131 and improve the throat hit of the aerosol.

[0191] In some embodiments, the wall thickness of the hollow tube is in the range of 1 mm to 3 mm.

[0192] Here, when the wall thickness of the hollow tube is less than 1 mm, the hollow tube has poor support effect and is easy to deform, and when the wall thickness of the hollow tube is greater than 3 mm, the extraction passage of the aerosol is too narrow, which affects the smoke yield of the aerosol generating article 10 and increases the suction resistance of the aerosol generating article 10.

[0193] In this embodiment, by setting the wall thickness of the hollow tube in the range of 1 mm to 4 mm, the hollow tube has a certain support effect and structural strength, and the suction resistance of the hollow tube is appropriate, which is beneficial for the extraction of the aerosol and makes the aerosol generating article 10 have a certain smoke yield. In addition, the heat capacity of the hollow tube is appropriate, thereby improving the heat exchange effect of the aerosol.

[0194] In some embodiments, referring to FIGS. 4 and 5, the functional segment further includes a filter segment 12, which is located at the proximal-lip end of the aerosol generating article 10.

[0195] In the embodiment in which the functional segment further includes the cooling segment 13, the filter segment 12 is located at the proximal-lip end of the cooling segment 13.

[0196] That is, the cooling segment 13 is arranged between the substrate segment 11 and the filter segment 12.

[0197] The aerosol generated by heating the aerosol generating article 10 can flow through the filter segment 12, which can filter out large particle components and undesired impurities in the aerosol. That is, the aerosol generated by heating the aerosol generating article 10 is filtered by the filter segment 12 and then inhaled by the user.

[0198] The aerosol generated by heating the aerosol generating article 10 can flow through the filter segment 12, which can filter out large particle components and undesired impurities in the aerosol. That is, the aerosol generated by heating the aerosol generating article 10 is filtered by the filter segment 12 and then inhaled by the user.

[0199] In some embodiments, referring to FIGS. 4 to 9, the filter segment 12 is configured to be formed of the base 15.

[0200] The base 15 of the filter segment 12 mainly functions to filter and support.

[0201] Due to the characteristic of the plant having a plurality of natural through-holes arranged in parallel, the filter segment 12 using the plant as the base 15 has relatively many natural through-holes inside, which can increase the surface area of the filter segment 12, thereby improving the filtering effect on the aerosol.

[0202] The density of the filter segment 12 ranges from 0.08 g / cm 3 0.2 g / cm3.

[0203] It can be understood that the filter segment 12 having a density that is too low has weak processing strength and is easily deformed when inhaled, and the filter segment 12 having a density that is too high causes too much retention when inhaled, which affects the smoke performance.

[0204] Exemplarily, the base 15 of the filter segment 12 can be cylindrical, the filter segment 12 has a size of 5 mm to 10 mm in the first direction, and the filter segment 12 has a diameter of 4 mm to 15 mm.

[0205] The base 15 of the filter segment 12 is a plant comprising a plurality of natural through-holes arranged in parallel, the natural through-holes having an equivalent diameter of 1 um to 2 mm; in a cross section perpendicular to the first direction, the ratio of the sum of cross-sectional areas of all airflow passages 151 having an equivalent diameter in the range of 0.01 mm to 0.3 mm to the cross-sectional area of the base 15 is in the range of 10% to 60%; in a cross section perpendicular to the first direction, the average equivalent diameter of all airflow passages 151 having an equivalent diameter greater than or equal to 0.01 mm is in the range of 0.05 mm to 0.5 mm; in a cross section parallel to the first direction, a plurality of pores are included, and the average equivalent diameter of the pores having an equivalent diameter greater than or equal to 0.01 mm is in the range of 0.01 mm to 0.05 mm; the base 15 of the filter segment 12 has a radial compression resilience, and the elastic recovery rate is in the range of 76% to 98%; the base 15 of the filter segment 12 has a certain radial hardness, and the radial hardness is in the range of 70% to 95%; the tensile strength of the base 15 of the filter segment 12 in the axial direction is in the range of 5 kN / m to 30 kN / m; the tensile strength of the base 15 of the filter segment 12 in the direction perpendicular to the first direction is in the range of 0.5 kN / m to 10 kN / m.

[0206] In other embodiments, referring to FIGS. 2 and 3, the filter segment 12 is configured to be formed by a material such as acetate fiber, polylactic acid, polyester, etc., the size of the filter segment 12 in the first direction is 5 mm to 10 mm, and the diameter of the filter segment 12 is 4 mm to 15 mm.

[0207] Exemplarily, the base 15 of the filter segment 12 can be a hollow tube.

[0208] In some embodiments, the cooling segment 13 and the filter segment 12 are integrally formed.

[0209] The integrally formed cooling segment 13 and filter segment 12 are advantageous in reducing parts, simplifying production processes, and reducing manufacturing costs.

[0210] In some embodiments, referring to FIGS. 2 to 9, the at least one functional segment comprises the filter segment 12, the front plug segment 14, and the cooling segment 13, and the filter segment 12, the front plug segment 14, and the cooling segment 13 are configured to be formed by at least one of the base 15.

[0211] That is, any one of the filter segment 12, the front plug segment 14, and the cooling segment 13 can be formed by the base 15, any two of the filter segment 12, the front plug segment 14, and the cooling segment 13 can be formed by the base 15, or all of the filter segment 12, the front plug segment 14, and the cooling segment 13 can be formed by the base 15.

[0212] Exemplarily, the aerosol generating article 10 further comprises an outer wrapper.

[0213] The outer wrapping layer is wrapped on the outer circumferential side of the functional segment and the substrate segment 11.

[0214] The aerosol generating article 10 is used in cooperation with an aerosol generating device 20 having a heating element 22, and specifically, the heating element 22 heats and atomizes the substrate segment 11 to generate an aerosol, and a user sucks the filtered aerosol through the filter segment 12.

[0215] The manner in which the heating element 22 heats the substrate segment 11 is not limited. Exemplarily, the heating manner includes center heating and peripheral heating, the center heating manner refers to the heating element 22 inserted into the inside of the substrate segment 11 to bake the substrate segment 11 from the inside to the outside. The peripheral heating manner refers to the heating element 22 arranged on the periphery of the substrate segment 11 to bake the substrate segment 11 from the outside to the inside. These heating manners can specifically be at least one of resistance heating, electromagnetic heating, infrared heating, microwave heating, laser heating, etc., which are not limited herein.

[0216] It should be noted that the aerosol generating article 10 mainly relies on the substrate segment 11 to generate an aerosol, and in some embodiments, the functional segment generally does not generate an aerosol, but some aerosol generating articles 10 add flavoring substances such as burst beads to the functional segment, and in some other embodiments, part of the functional segment can also generate an aerosol.

[0217] The material of the outer wrapping layer is not limited, for example, including but not limited to one or more combinations of fiber paper, metal foil, infrared radiation layer, metal foil composite fiber paper, polyethylene composite fiber paper, PE, PBAT, etc.

[0218] The outer wrapping layer can be a hollow tube, and the substrate segment 11 and the functional segment can be arranged in the hollow tube-shaped outer wrapping layer in sequence. The outer wrapping layer can also be tipping paper, and the substrate segment 11 and the functional segment are compounded into an integrated structure by the tipping paper.

[0219] In the description of the present disclosure, the description referring to the terms "in an embodiment", "in some embodiments", "in another embodiment", "in yet another embodiment", or "exemplarily" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the embodiments of the present disclosure. In the present disclosure, the exemplary description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, a person skilled in the art can combine different embodiments or examples described in the present disclosure and the features of different embodiments or examples without contradiction.

[0220] The above merely provides preferred embodiments of the present disclosure, but not for limiting the present disclosure. For those skilled in the art, the present disclosure can have various modifications and changes. Any modified, equivalent replacement, improvement, and the like which fall into the principles and technical scope of the present disclosure should be included in the protection range of the present disclosure.

Claims

1. An aerosol generating article comprising: a substrate segment for generating an aerosol; at least one functional segment arranged along a first direction with the substrate segment, and the at least one functional segment being separate from the substrate segment; wherein the at least one functional segment is configured to be formed from at least one matrix extending along the first direction, the matrix being configured to be formed from a plant comprising a plurality of natural straight-through holes arranged in parallel, the matrix having a plurality of airflow passages extending along the first direction in an interior of the matrix, the natural straight-through holes forming the airflow passages.

2. An aerosol-generating article according to claim 1, wherein, the substrate segment comprises the matrix and a load, the matrix being configured to load the load, the load comprising at least an aerosol generating agent.

3. An aerosol-generating article according to claim 1, wherein, the matrix comprises at least one of bamboo, wood, kudzu vine, wisteria, lonicera japonica, grape vine, milk vetch root, codonopsis root, rush stem, water onion stem, sugarcane, corn, sorghum, and reed. 4.The aerosol generating article according to claim 1, wherein a porosity of the matrix is in a range of 50% to 98%; and / or The density of the base body is in the range of 0.05 g / cm 3 to 0.3 g / cm 3 . 5.The aerosol generating article according to claim 1, wherein a porosity of the matrix is in a range of 80% to 95%; and / or The density of the base body is in the range of 0.1 g / cm 3 to 0.24 g / cm 3 . 6.The aerosol generating article according to claim 1, wherein equivalent diameters of the airflow passages in the matrix in a range of 1 μm to 2 mm account for 90% or more of all the airflow passages in the matrix. 7.The aerosol generating article according to claim 1, wherein in a cross section perpendicular to the first direction, a ratio of a sum of cross sectional areas of all the airflow passages having equivalent diameters in a range of 0.01 mm to 0.3 mm to a cross sectional area of the matrix is in a range of 10% to 60%. 8.The aerosol generating article according to claim 1, wherein in a cross section perpendicular to the first direction, an average equivalent diameter of all the airflow passages having equivalent diameters greater than or equal to 0.01 mm is in a range of 0.05 mm to 0.5 mm; and / or in a cross section parallel to the first direction, including a plurality of air holes, an average equivalent diameter of the air holes having equivalent diameters greater than or equal to 0.01 mm is in a range of 0.01 mm to 0.05 mm.

9. An aerosol-generating article according to claim 1, wherein, an elastic recovery rate of the matrix in a radial direction is in a range of 76% to 98%; and / or a radial hardness of the matrix is in a range of 70% to 95%.

10. An aerosol-generating article according to claim 1, wherein, a tensile strength of the matrix in the first direction is in a range of 5 kN / m to 30 kN / m; and / or a tensile strength of the matrix in a direction perpendicular to the first direction is in a range of 0.5 kN / m to 10 kN / m. 11.The aerosol generating article according to claim 1, wherein a porosity of the substrate segment is in a range of 20% to 90%; and / or The density of the matrix section is in the range of 0.4 g / cm 3 to 1.2 g / cm 3 . 12.The aerosol generating article according to claim 1, wherein a thermal conductivity of the substrate segment is in a range of 0.1 W / m.k to 0.3 W / m.k; and / or, The specific heat capacity of the substrate segment is in the range of 1.0 kJ / (kg·K) to 3.8 kJ / (kg·K). 13.The aerosol generating article of claim 1, wherein, The at least one functional segment includes a front plug segment, the front plug segment being located at a distal lip end of the substrate segment, The front plug segment is configured to be formed from the base preparation. 14.The aerosol generating article of claim 13, wherein, The front plug segment is at least partially loaded with at least one of tobacco powder, non-tobacco plant powder, flavor, essence, nicotine, or aerosol generating agent. 15.The aerosol generating article of claim 1, wherein, The at least one functional segment includes a temperature reduction segment, the temperature reduction segment being located at a proximal lip end of the substrate segment, The temperature reduction segment is configured to be formed from the base preparation. 16.The aerosol generating article of claim 15, wherein, The temperature reduction segment is at least partially loaded with at least one of tobacco powder, non-tobacco plant powder, flavor, essence, nicotine, or aerosol generating agent. 17.The aerosol generating article of claim 15, wherein, The temperature reduction segment is configured as a hollow tube having a hollow channel inside, an inner portion of a tube wall of the hollow tube having a plurality of the airflow passages, An equivalent pore size of the hollow channel is in the range of 2 mm to 10 mm, or, A tube wall thickness of the hollow tube is in the range of 1 mm to 3 mm. 18.The aerosol generating article of claim 15, wherein, The at least one functional segment further includes a filter segment, the filter segment being located at a proximal lip end of the temperature reduction segment, The filter segment is configured to be formed from the base preparation.

19. An aerosol-generating article according to claim 18, wherein, The temperature reduction segment and the filter segment are integrally formed. 20.The aerosol generating article of claim 1, wherein, The aerosol generating article further includes a filter segment, the filter segment being located at a proximal lip end of the aerosol generating article, the filter segment being configured to be formed from the base preparation, the filter segment and the substrate segment being an integral structure. 21.The aerosol generating article of claim 1, wherein, The at least one functional segment includes a filter segment, a front plug segment, and a temperature reduction segment, the filter segment, the front plug segment, and the temperature reduction segment being configured to be formed from the base preparation. 22.An aerosol generating system, the aerosol generating system comprising: an aerosol generating device; the aerosol generating article of any one of claims 1-21, the aerosol generating device including a heating element for heating the aerosol generating article to generate an aerosol.

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