Aerosol generation product and aerosol generation system

Abstract

An aerosol generation product (100) and an aerosol generation system. The aerosol generation product (100) comprises a medium section (10), functional sections (20), cooling sections (30) and a mouthpiece rod section (40) which are arranged in a first direction; the draw resistance of the functional sections (20) is different from that of the medium section (10); the quantity of at least one of the functional sections (20) and the cooling sections (30) is two, and the functional sections (20) and the cooling sections (30) are all located between the medium section (10) and the mouthpiece rod section (40); and the medium section (10) is of an integrated structure, at least one first air channel hole (10a) is formed in the medium section (10), and the first air channel hole (10a) penetrates through at least one end of the medium section (10) in the first direction. The aerosol generation product (100) is provided with the functional section (20) having the draw resistance different from that of the medium section (10), such that the draw resistance of the aerosol generation product (100) is kept in a proper range; and the quantity of the functional sections (20) and the cooling sections (30) is controlled, such that the quantity of at least one of the functional sections (20) and the cooling sections (30) is two, facilitating the control of the draw resistance of the aerosol generation product (100) and the temperature of an aerosol, improving the use experience of users.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application is based on, and claims priority to Chinese Patent Application No. 202310932786.X, filed on July 26, 2023, the disclosure of which is hereby incorporated by reference in its entirety.TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of smoking articles, in particular to an aerosol generating article and an aerosol generating system.BACKGROUND

[0003] This section is intended to provide the background or context for the embodiments of the present disclosure as set forth in the claims. The description herein is not acknowledged as the prior art by virtue of its inclusion in this section.

[0004] The smoking articles include smoking articles which form the aerosol by ignition, and smoking articles which form the aerosol by heating without combustion. In a typical smoking article by heating without combustion, it includes an aerosol generating substrate which can volatilize upon heating to produce the aerosol. The aerosol generating substrate is heated by an external heat source so that the aerosol generating substrate is heated just enough to emit a flavor. The aerosol generating substrate will not burn but is loaded with the atomizing agent, and when used, the atomizing agent is released by heating through a high temperature to form a smoke.

[0005] The draw resistance of the smoking articles during smoking process is an important indicator for the smoking articles. In the related art, the draw resistance of the smoking articles is too low or too high, resulting in reducing the experience of users.SUMMARY

[0006] In view of the above, it is desirable to provide an aerosol generating article with a suitable draw resistance and an aerosol generating system.

[0007] In order to implement the above object, the embodiments of the present disclosure provide an aerosol generating article, which includes a substrate segment, a functional segment, a cooling segment, and a mouthpiece segment that are arranged in a first direction.

[0008] A draw resistance of the functional segment is different from a draw resistance of the substrate segment, and the mouthpiece segment is configured to filter and / or cool an aerosol.

[0009] At least one of a number of the functional segments or a number of the cooling segments is two, and both the functional segment and the cooling segment are located between the substrate segment and the mouthpiece segment.

[0010] The substrate segment is an integral structure, at least one first airway hole is provided within an interior of the substrate segment, and the at least one first airway hole extends through at least one end of the substrate segment along a first direction.

[0011] In an implementation, the number of cooling segments is two, and one of the two cooling segments is a first cooling segment, and the other one of the two cooling segments is a second cooling segment.

[0012] In an implementation, the functional segment is located between the first cooling segment and the second cooling segment; or the first cooling segment and the second cooling segment are located between the functional segment and the mouthpiece segment.

[0013] In an implementation, one of the first cooling segment or the second cooling segment is a first hollow structure, the other one of the first cooling segment or the second cooling segment is a second hollow structure; the first hollow structure is provided with a first cavity extending through both ends of the first hollow structure in a first direction, and the second hollow structure is provided with a second cavity extending through both ends of the second hollow structure in the first direction, and in a plane perpendicular to the first direction of the aerosol generating article, an area of a cross section of the second cavity is less than an area of a cross section of the first cavity.

[0014] In an implementation, the first hollow structure further comprises a partition, the partition is disposed within the first cavity and partitions the first cavity into a plurality of sub-cavities.

[0015] In an implementation, the number of functional segments is two, and one of the two functional segments is a first functional segment, and the other one of the two functional segments is a second functional segment.

[0016] In an implementation, the cooling segment is located between the first functional segment and the second functional segment; or the first functional segment and the second functional segment are located between the cooling segment and the mouthpiece segment.

[0017] In an implementation, the functional segment is a mesh-like structure, a folded structure, a pleated structure, or a tow-like structure.

[0018] In an implementation, the substrate segment, the functional segment, the cooling segment, and the mouthpiece segment are separable structures, and the functional segment is an integral structure.

[0019] In an implementation, at least one second airway hole is provided in an interior of the functional segment, and the at least one second airway hole extends through at least one end of the functional segment in the first direction.

[0020] In an implementation, the mouthpiece segment is a filter segment, or the mouthpiece segment is a third hollow structure, and the third hollow structure is provided a third cavity extending through both ends of the third hollow structure in the first direction.

[0021] In an implementation, the substrate segment, the functional segment, the cooling segment, and the mouthpiece segment are cylindrical and disposed coaxially, and the first direction is an axial direction of the substrate segment, the functional segment, the cooling segment, and the mouthpiece segment.

[0022] The draw resistance of the functional segment is different from the draw resistance of the substrate segment.

[0023] The embodiments of the present disclosure provide an aerosol generating article. The aerosol generating article includes a substrate segment, a functional segment, a cooling segment, and a mouthpiece segment, which are arranged in a first direction. The substrate segment generates the aerosol when heated, and the mouthpiece segment may be configured to filter and / or cool the aerosol. On one hand, in the embodiments of the present disclosure, by incorporating a functional segment with a draw resistance different from the draw resistance of the substrate segment, it facilitates maintaining the draw resistance of the aerosol generating article within an appropriate range, i.e., ensuring a suitable draw resistance for the aerosol generating article. On the other hand, by controlling the number of functional segments and the number of the cooling segments such that at least one of the number of functional segments or the number of the cooling segments is two, it further facilitates the control for the draw resistance of the aerosol generating article 100 and the temperature of the aerosol, thereby improving the user experience. In addition, the substrate segment is an integral structure. For example, the substrate segment may be formed by extrusion, die casting or injection processes, to improve the uniformity of the density of the substrate segment and improve the stability of aerosol release and suction.BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG. 1 is a schematic structural diagram of an aerosol generating article according to an embodiment of the present disclosure. FIG. 2 is a cross-sectional view of the aerosol generating article illustrated in FIG. 1, with the dashed arrows indicating the flow direction of airflow in the aerosol generating article. FIG. 3 is a cross-sectional view of an aerosol generating article according to a second embodiment of the present disclosure. FIG. 4 is a cross-sectional view of an aerosol generating article according to a third embodiment of the present disclosure. FIG. 5 is a cross-sectional view of an aerosol generating article according to a fourth embodiment of the present disclosure. FIG. 6 is a cross-sectional view of an aerosol generating article according to a fifth embodiment of the present disclosure. FIG. 7 is a cross-sectional view of an aerosol generating article according to a sixth embodiment of the present disclosure. FIG. 8 is a cross-sectional view of an aerosol generating article according to a seventh embodiment of the present disclosure. FIG. 9 is a cross-sectional view of an aerosol generating article according to an eighth embodiment of the present disclosure. FIG. 10 is a schematic structural diagram of a first cooling segment illustrated in FIG. 5. FIG. 11 is a schematic structural diagram of a functional segment illustrated in FIG. 6. DETAILED DESCRIPTION

[0025] It is to be noted that without causing any conflict, the embodiments of the present disclosure and the technical features in the embodiments may be combined with each other, and the detailed description in the specific implementations should be understood as an explanation for the purpose of the present disclosure and should not be regarded as an undue limitation on the present disclosure.

[0026] In the description of the present disclosure, the orientation or positional relationship of "first direction" is based on the orientation or positional relationship illustrated in FIG. 1 and FIG. 2. It is to be noted that these orientation terms are merely for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and be constructed and operate in a specific orientation, and thus cannot be understood as a limitation for the present disclosure.

[0027] The embodiments of the present application provide an aerosol generating article. Referring to FIG. 1 to FIG. 10, the aerosol generating article includes a substrate segment 10, a functional segment 20, a cooling segment 30, and a mouthpiece segment 40 that are arranged in a first direction. Both the functional segment 20 and the cooling segment 30 are located between the substrate segment 10 and the mouthpiece both 40. That is, the substrate segment 10 and the mouthpiece segment 40 are located at the two ends of the aerosol generating article 100, respectively. The substrate segment 10 is the lip-distal end of the aerosol generating article 100 and the mouthpiece segment 40 is the lip-proximal end of the aerosol generating article 100.

[0028] The lip-proximal end refers to the end of the aerosol generating article 100 close to the user when the user uses the aerosol generating article 100, and the lip-distal end refers to the end of the aerosol generating article 100 away from the user when the user uses the aerosol generating article 100.

[0029] The draw resistance of the functional segment 20 is different from the draw resistance of the substrate segment 10, so that the draw resistance of the aerosol generating article 100 may be maintained within an appropriate range by controlling the draw resistance of the functional segment 20.

[0030] It is to be understood that since the aerosol flows through the functional segment 20, the functional segment 20 may also provide a certain cooling effect on the aerosol.

[0031] The cooling segment 30 is located between the filter segment and the substrate segment 10, and may be, for example, a hollow paper tube, a hollow acetate fiber structure, a corrugated paper tube, or the like, and the cooling segment 30 is mainly used for lowering the aerosol temperature.

[0032] The mouthpiece segment 40 may be configured to filter and / or cool the aerosol.

[0033] The mouthpiece segment 40 is located at the lip-proximal end of the aerosol generating article 100, and may be made of cellulose acetate, polyethylene terephthalate (PET), polysaccharide, propylene fiber or other materials. The mouthpiece segment 40 is mainly used for filtering, and adjusting the draw resistance of the aerosol generating article 100 in conjunction with the functional segment 20 to enable the draw resistance of the aerosol generating article 100 to meet the design requirements. The mouthpiece segment 40 may also directly use a hollow paper tube to extend the flow path of the aerosol and reduce the temperature of the aerosol.

[0034] At least one of the number of the functional segments 20 or the number of the cooling segments 30 is two. For example, in some embodiments, the number of the functional segments 20 is two, and the number of the cooling segment 30 may be one or more. In some other embodiments, the number of cooling segments 30 is two, and the number of functional segments 20 may be one or more.

[0035] The aerosol generating article 100 relies on the substrate segment 10 to generate the aerosol, and the functional segment 20, the cooling segment 30, and the mouthpiece segment 40 are not used to generate the aerosol.

[0036] It is to be understood that the aerosol generating article 100 according to the embodiments of the present disclosure may be used for suction by ignition, or may be used for suction by heating without combustion. In the embodiments of the present disclosure, the description is made by taking the aerosol generating article 100 being used for suction by heating without combustion as an example.

[0037] The aerosol generating article 100 is used in combination with an aerosol generating device.

[0038] The substrate segment 10 is configured to, when heated, generate the aerosol for suction by a user.

[0039] In an embodiment of the present disclosure, the substrate segment 10 is substantially in a columnar shape. The columnar shape may be a cylindrical shape (i.e., the cross section is circular), a prismatic shape (i.e., the cross section is polygonal), an elliptical cylindrical shape (i.e., the cross section is elliptical), or the like, which is not limited herein.

[0040] The substrate segment 10, the functional segment 20, the cooling segment 30 and the mouthpiece segment 40 may be separable structures, and they are not connected together by mechanical and physical structures or adhesives, but two of them may be in contact. The substrate segment 10, the functional segment20, the cooling segment 30 and the mouthpiece segment 40 form a combined-type structure, so that different substrate segments 10, different functional segments 20, different cooling segments 30 and different mouthpiece segments 40 may be reasonably combined to meet different suction requirements of users.

[0041] Exemplarily, the substrate segment 10 is a particle combination (also referred to as a powder combination), and is a restructured tobacco substrate, such as a restructured tobacco substrate containing components such as smoking agent, tobacco, etc. The substrate segment 10 is an integral structure, which may be formed, for example, by extrusion, injection molding, or die-casting molding process. The extrusion molding refers to a processing method in which the raw material mixture is added into an extruder, the material is pushed forward by a screw under the action of the barrel and the screw of the extruder, and continuously passes through the die at the outlet of the extruder, to form the articles or semi-finished articles with various cross-sections. The structure of the substrate formed by performing extrusion molding is a strip shape. In this way, the substrate segment 10 remains an integral substrate during and after heating and inhalation, and the case of disintegration and falling is not easy to occur, thereby solving the problems of, for example, sheet loosening, filament component or particle component falling off, and difficulty in cleaning occur on the substrate segment 10 in the form of sheet, filament or loose particles, and the problem of non-uniform compositions in the related art.

[0042] The interior of the substrate segment 10 is provided with at least one first airway hole 10a, and referring to FIG. 2 to FIG. 9, the first airway hole 10a extends through at least one end of the substrate segment 10 in the first direction.

[0043] The case that the interior of the substrate segment 10 is provided with at least one first airway hole 10a indicates that the interior of the substrate segment 10 is provided with one first airway hole 10a, or the interior of the substrate segment 10 is provided with a plurality of first airway holes 10a.

[0044] It is to be noted that "a plurality of" as used in the embodiments of the present disclosure refers to two or more.

[0045] In some embodiments, the first airway hole 10a extend through the same end of the substrate segment 10 in the first direction, and the other end is closed.

[0046] In some other embodiments, part of the first airway holes 10a extend through one end of the substrate segment 10 in the first direction, and other part of the first airway holes 10a extend through the other end of the substrate segment 10 in the first direction.

[0047] In some other embodiments, referring to FIG. 2 to FIG. 9, each first airway hole 10a extends through both ends of the substrate segment 10 in the first direction. That is, the first airway hole 10a extends along the first direction of the substrate segment 10, and the airflow may flow from one end of the substrate segment 10 to the other end of the substrate segment 10 through the first airway hole 10a. Preferably, the first airway hole 10a is parallel to the central axis of the substrate segment 10.

[0048] The hole wall of the first airway hole 10a constitutes the inner surface of the substrate segment 10, and the first airway hole 10a may increase the inner surface area of the substrate segment 10 to facilitate heat transfer, and improve heating efficiency. In addition, the substrate segment 10 is heated to generate the aerosol, and the aerosol is collected in the first airway hole 10a, and transported to the suction end under the action of suction negative pressure. The first airway hole 10a may reduce the draw resistance experienced by the user during smoking and improve the user experience. It is to be noted that the draw resistance is positively correlated with the flow resistance of the aerosol, and the lower the flow resistance of the aerosol in the substrate segment 10, the lower the draw resistance experienced by the user, and the higher the flow resistance of the aerosol in the substrate segment 10, the higher the draw resistance experienced by the user.

[0049] It is to be noted that the shape of the first airway hole 10a is not limited herein. For example, on a plane perpendicular to the first direction of the substrate segment 10, the cross-sectional shape of the first airway hole 10a is, but is not limited to, circular (as in FIG. 2 to FIG. 9), oval, track-shaped or polygonal, and the polygonal shape includes a regular or irregular polygon.

[0050] The track-shape refers to the shape similar to the athletics track, which is formed by alternately connecting two semicircles and two parallel straight sides.

[0051] The cross-sectional shape of the first airway hole 10a refers to the cross-sectional shape of the first airway hole 10a taken in a plane perpendicular to the first direction of the substrate segment 10.

[0052] Further, the cross-sectional shapes of the first airway holes 10a may be the same. Alternatively, the cross-sectional shapes of at least two first airway holes 10a are different. For example, the cross-sectional shape of at least one first airway hole 10a may be circular, and the cross-sectional shape of at least one first airway hole 10a may be polygonal.

[0053] For example, referring to FIG. 1 to FIG. 9, the aerosol generating article 100 includes a wrapping layer 50. The wrapping layer 50 is configured to wrap around the circumferential surface of the substrate segment 10, the functional segment 20, the cooling segment 30, and the mouthpiece segment 40.

[0054] The wrapping layer 50 has a certain degree of hardness, and may provide a certain protection to the substrate segment 10, reduce the surface area of the substrate segment 10 directly exposed to the outside, such that the probability of the substrate segment 10 being deteriorated by moisture due to contact with air is reduced, and meanwhile, the probability of contamination from contact with other components within the aerosol generating device is reduced.

[0055] It is to be noted that the substrate segment 10 and the wrapping layer 50 may be an integral structure. That is, the substrate segment 10 and the wrapping layer 50 are different parts of an integral structure. Therefore, on one hand, fixing the relative position of the substrate segment 10 and the wrapping layer 50 may reduce the probability of separation of the substrate segment 10 and the wrapping layer 50 due to factors such as temperature change and vibration during use of the aerosol generating article 100. On the other hand, the substrate segment 10 and the wrapping layer 50 may be produced simultaneously, thereby reducing the producing steps and improving the production efficiency.

[0056] For example, the integral structure of the substrate segment and the wrapping layer 50 is formed by a co-extrusion process.

[0057] Of course, the substrate segment 10 and the wrapping layer 50 may be separate structures.

[0058] The embodiments of the present disclosure further provide an aerosol generating system. The aerosol generating system includes an aerosol generating device and an aerosol generating article provided by the embodiments of the present disclosure. The aerosol generating device includes a heating element (not shown), which is configured to heat the substrate segment 10 to generate the aerosol.

[0059] Specifically, the aerosol generating device includes a housing and a power supply component disposed in the housing. The housing has a containment chamber, an electric energy output part of the power supply component is disposed in the containment chamber or around a sidewall of the containment chamber. When the portion of the aerosol generating article 100 in the range corresponding to a first direction where the substrate segment 10 is located is inserted into the containment chamber, the electric energy output part transmits electric energy to the heating component in a contact or non-contact manner, and the heating component receives the energy from the outside to generate heat, such that the substrate segment 10 is heated to generate the aerosol.

[0060] In the embodiments of the present disclosure, the first direction does not specifically refer to the direction in which the external outline of the substrate segment 10 is the longest. Specifically, both the direction in which the aerosol generating article 100 is inserted into the containment chamber and the direction in which the aerosol generating article 100 is taken out from the containment chamber are parallel to the first direction. The length of the substrate segment 10 in the first direction may be longer, shorter, or the same as the length in other directions.

[0061] For example, when the external outline of the substrate segment 10 is cylindrical, the first direction is the axial direction of the substrate segment 10. It is to be noted that even if the axial length of the substrate segment 10 is less than the diameter thereof, the first direction of the substrate segment 10 is still the axial direction. For another example, when the outline of the substrate segment 10 is a cuboid, the first direction is still the direction as defined above, that is, the direction in which the aerosol generating article 100 is taken from and placed to the containment chamber, and the first direction of the substrate segment may be any direction of the length, width or height of the cuboid.

[0062] The embodiments of the present disclosure provide an aerosol generating article 100. The aerosol generating article 100 includes a substrate segment 10, a functional segment 20, a cooling segment 30, and a mouthpiece segment 40, which are arranged in a first direction. The substrate segment 10 generates the aerosol when heated, and the mouthpiece segment 40 may be configured to filter and / or cool the aerosol. On one hand, in the embodiments of the present disclosure, by incorporating a functional segment 20 with a draw resistance different from the draw resistance of the substrate segment, it facilitates maintaining the draw resistance of the aerosol generating article 100 within an appropriate range, i.e., ensuring a suitable draw resistance for the aerosol generating article. On the other hand, by controlling the number of functional segments 20 and the number of the cooling segments 30 such that at least one of the number of functional segments 20 or the number of the cooling segments 30 is two, it further facilitates the control for the draw resistance of the aerosol generating article 100 and the temperature of the aerosol, thereby improving the user experience. In addition, the substrate segment 10 is an integral structure. For example, the substrate segment 10 may be formed by extrusion, die casting or injection processes, so as to improve the uniformity of the density of the substrate segment 10 and improve the stability of aerosol release and suction.

[0063] Exemplarily, the substrate segment 10, the functional segment 20, the cooling segment 30, and the mouthpiece segment 40 are separable structures, so that different substrate segments 10, different functional segments 20, different cooling segments 30, and different mouthpiece segments 40 may be reasonably combined to meet different draw resistance and temperature requirements of users, thereby further improving the user experience.

[0064] The specific constituents of the substrate segment 10 are not limited herein. Exemplarily, in an embodiment, the substrate segment 10 may include the plant constituent, the auxiliary constituent, the smoking agent constituent, the adhesive constituent, and flavor constituent, etc.

[0065] The plant constituent is configured to generate the aerosol when heated. The auxiliary constituent is configured to provide skeletal support for the plant constituent. The smoking agent constituent is configured to produce smoke when heated. The adhesive constituent is configured to bind various raw material constituents. The flavor constituent is configured to provide the characteristic aroma. In this way, the plant constituent and the smoking agent constituent may ensure the amount of generated aerosol, while the flavor constituent may improve the release of aroma during smoking, thereby improving the user experience. The auxiliary constituent not only improves the fluidity of the mixture, but also enables the substrate segment 10 to be a porous structure, so as to facilitate the extraction and flow for the aerosol. The adhesive constituent ensures that the plant constituent, the auxiliary constituent, and the like form a stable mixture, and avoids a loose structure.

[0066] For example, the plant constituent may be one or a combination of more of the powders formed by crushing the tobacco leaf raw materials, tobacco leaf fragments, tobacco stems, tobacco dust, fragrant plants, etc. The plant constituent is the core source of the flavor. The endogenous substance in the plant component may provide the physiological satisfaction to users. The endogenous substance, such as alkaloids, enters the human blood, and promote the generation of dopamine by the pituitary gland, thereby obtaining physiological satisfaction.

[0067] For example, the auxiliary constituent may be one or a combination of more of the inorganic filler, the lubricant, and the emulsifier. The inorganic filler includes one or a combination of more of the heavy calcium carbonate, the light calcium carbonate, the zeolite, the attapulgite, the talc powder, and the diatomite. The inorganic filler may provide the skeleton support for the plant component. The inorganic filler also has micropores, which may increase the porosity of the substrate segment 10, such that the aerosol release rate is improved. The lubricant includes one or a combination of more of the candle wax, the carnauba wax, the shellac, the sunflower wax, the rice bran, the beeswax, the stearic acid, and the palmitic acid. The lubricant may increase the fluidity of plant raw material powder, reduce the friction between the plant raw material powder, enable the overall density of the plant raw material powder to be more uniform, also reduce the pressure required for extrusion molding process, and reduce the wear of the die opening. The emulsifier includes one or a combination of more of the polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. The emulsifier may, to some extent, slow down the loss of flavor substances during storage, increase the stability of the flavor substances, and improve the sensory quality of the product.

[0068] For example, the smoking agent may include one or a combination of more of monohydric alcohol (such as menthol), polyol (such as propylene glycol, glycerol, triethylene glycol, 1, 3-butanediol and tetraethylene glycol); ester of polyol (such as glyceryl triacetate, triethyl citrate, glyceryl diacetate mixtures, triethyl citrate, benzyl benzoate, tributyrate); monocarboxylic acid; dicarboxylic acid; polycarboxylic acid (such as lauric acid, myristic acid) or aliphatic ester of polycarboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1, 3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, Triactin, meso-erythritol, glyceryl diacetate mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanilate, glyceryl tributyrate, lauryl acetate).

[0069] For example, the adhesive constituent is in close contact with the interface of the constituent raw material by wetting together with the constituent raw material interface to generate the intermolecular attractive force, thereby bonding to the constituent raw material, such as a powder, a liquid, or the like. The adhesive constituent may be one or a combination of more of natural plant extracts, non-ionized modified viscous polysaccharides including tamarind polysaccharides and guar gum, and modified cellulose (such as carboxymethyl cellulose). The adhesive is configured to bind the particles together, which are not easy to loosen, and the adhesive further improves the water resistance of the substrate segment 10, and is harmless to the human body.

[0070] Exemplarily, the flavor constituent is configured to provide characteristic aroma, such as hay aroma, roasted sweet aroma, solid or liquid substances of nicotine. The flavor constituent may include one or a combination of more of tobacco or other plants, flavored plant extracts, extractum, essential oils, absolute oils. The flavor constituent may include a monomeric flavoring substance, for example, one or a combination of more of macrotrienone, neophytadiene, geraniol, nerol, and the like.

[0071] It is to be noted that the substrate segment 10 is formed with micropores, and the micropores communicate with each other to form the micro-airways communicating with the first airway hole 10a. That is, the micro-airway communicates with the first airway hole 10a, and since the micro-airway is formed by communication between the micropores, the micropores communicate with the passage 10a. In addition, it is to be understood that the case that the micropores communicate with each other may be that: some micropores may communicate with each other and some micropores may not communicate with each other, or all of the micropores communicate with each other. For example, in the embodiments in which the substrate segment 10 is a particle combination, the gaps between the particles form the micropores. The sizes of the micropores are determined by the gaps between the particles.

[0072] The first airway hole 10a and the micro-airway may increase the surface area of substrate segment 10, which may facilitate the heat transfer and improve heating efficiency. The substrate in the substrate segment 10 is heated to release the aerosol, which is collected to the first airway hole 10a through the gaps between the wall materials or the micro-airways. The aerosol released by the atomization substrate exposed to the first airway hole 10a (i.e., the atomization substrate located on the inner wall surface of the first airway hole 10a) may be directly released to the first airway hole 10a. The aerosol between adjacent first airway holes 10a may also be flow through the micro-airway and delivered to the suction end under the action of suction negative pressure.

[0073] For example, in some embodiments, referring to FIG. 7 and FIG. 8, the functional segment 20 may be an integral structure. In an embodiment, the functional segment 20 produced as the integral structure by the extrusion molding process has the function of temperature resistance and preventing thermal collapse in addition to the function of adjusting the draw resistance. Further, the flavor may be loaded according to the style characteristics of the product to enhance the richness of the aerosol. The extrusion molding may refer to a processing method in which the raw material mixture of the functional segment 20 is added into an extruder, the material mixture is pushed forward by a screw under the action of the barrel and the screw of the extruder, and continuously passes through the die at the outlet of the extruder to form the articles or semi-finished articles with various cross-sections.

[0074] In other embodiments, the functional segment 20 may be an integral structure formed by processes such as injection molding and die casting.

[0075] Exemplarily, in some embodiments, the composition of the functional segment 20 is the same as the composition of the substrate segment 10. In this way, during use, the functional segment 20 does not bring undesirable odors, thereby avoiding affecting the taste of the aerosol. In addition, the composition of the functional segment 20 is the same as the composition of the substrate segment 10, which is more beneficial for the functional segment 20 and the substrate segment 10 to be manufactured by the same manufacturing process and raw materials, such that the production efficiency is improved.

[0076] Exemplarily, in some other embodiments, the composition of the functional segment 20 is different from the composition of the substrate segment 10. For example, the functional segment 20 may be produced from different materials such as plant materials, polysaccharides, silica gel, resins, etc.

[0077] The interior of the functional segment 20 is provided with at least one second airway hole 20a, and referring to FIG. 7 to FIG. 8, the second airway hole 20a extends through at least one end of the functional segment 20 in the first direction.

[0078] The case that the interior of the functional segment 20 is provided with at least one second airway hole 20a may indicate that the interior of the functional segment 20 is provided with one second airway hole 20a, or the interior of the functional segment 20 is provided with a plurality of second airway holes 20a.

[0079] In some embodiments, the second airway hole 20a extend through the same end of the functional segment 20 in the first direction, and the other end is closed.

[0080] In some other embodiments, part of the second airway holes 20a extend through one end of the functional segment 20 in the first direction, and other part of the second airway holes 20a extend through the other end of the functional segment 20 in the first direction.

[0081] In some other embodiments, referring to FIG. 7 to FIG. 8, each second airway hole 20a extends through both ends of the functional segment 20 in the first direction. That is, the second airway hole 20a extends along the first direction of the functional segment 20, and the airflow may flow from one end of the functional segment 20 to the other end of the functional segment 20 through the second airway hole 20a. Preferably, the second airway hole 20a is parallel to the central axis of the functional segment 20.

[0082] It is to be noted that the first airway hole 10a and the second airway hole 20a described above are pores in a macroscopic sense, and the micropores are pores in a microscopic sense, and the area of the cross-section of the first airway hole 10a is much greater than the area of the cross-section of the micropores.

[0083] It is to be noted that the draw resistance is positively correlated with the flow resistance of the aerosol, and the lower the flow resistance of the aerosol in the functional segment 20, the lower the draw resistance experienced by the user, and the higher the flow resistance of the aerosol in the functional segment 20, the higher the draw resistance experienced by the user.

[0084] The functional segment 20 adjusts the draw resistance by providing the second airway hole 20a and controlling the design parameter of the second airway hole 20a, for example, by controlling the parameters such as the number of the second airway holes 20a of the functional segment 20, the cross-sectional area (hydraulic diameter) of the second airway hole 20a, and the cross-sectional area of the functional segment 20.

[0085] When the functional segment 20 is provided with a plurality of second airway holes 20a, the aerosol may perform heat exchange with the hole walls of the second airway holes 20a when flowing through the second airway holes 20a, and the temperature of the aerosol may be effectively reduced by using the multi-airway heat exchange.

[0086] It is to be noted that the shape of the second airway hole 20a is not limited herein. For example, on a plane perpendicular to the first direction of the functional segment 20, the cross-sectional shape of the second airway hole 20a is, but is not limited to, at least one of circular (as in FIG. 7 and FIG. 8), oval, track-shaped, elongate-shaped, polygonal or fan-shaped, and the polygonal shape includes a regular or irregular polygon.

[0087] The cross-sectional shape of the second airway hole 20a refers to the cross-sectional shape of the second airway hole 20a taken in a plane perpendicular to the first direction of the functional segment 20.

[0088] Further, the cross-sectional shapes of the second airway holes 20a may be the same. Alternatively, the cross-sectional shapes of at least two second airway holes 20a are different. For example, the cross-sectional shape of at least one second airway hole 20a may be circular, and the cross-sectional shape of at least one second airway hole 20a may be polygonal.

[0089] Exemplarily, the functional segment 20 may be a mesh-like structure, a folded structure, a pleated structure, a solid cellulose acetate structure, or a hollow cellulose acetate structure.

[0090] The functional segment 20 with the mesh-like structure indicates that the size of the functional segment 20 in the first direction is less, and a plurality of second airway holes 20a extend through in the first direction are formed thereon. In this way, on the basis of implementing the adjustment for the draw resistance of the aerosol generating article 100, the size of the functional segment 20 in the first direction may be effectively reduced, such that it facilitates reducing the overall size of the aerosol generating article 100 and enabling the structure to be more compact.

[0091] The specific manner in which the functional segment 20 of the mesh-like structure is formed is not limited herein. For example, it is formed by interweaving a plurality of criss-crossing filamentous structures, and the second airway hole 20a is formed by enclosure of the cross-crossing filamentous structures.

[0092] For another example, the functional segment 20 of the mesh-like structure is in the shape of a thin plate, and the second airway hole 20a extends through the functional segment 20 in the thickness direction of the functional segment 20.

[0093] In some other embodiments, when the functional segment 20 of the mesh-like structure is in the shape of a thin plate, the edge of the functional segment 20 may also be formed with a flange, and the functional segment 20 abuts against the substrate segment 10, the cooling segment 30 or the mouthpiece segment 40 through the flange.

[0094] The specific material of the functional segment 20 of the mesh-like structure is not limited herein. For example, the material may be a metal mesh, a first hollow structure covered with high-permeability paper / film, etc., so that the functional segment 20 may have the ability of temperature resistance. The functional segment 20 is provided with a plurality of second airway holes 20a, and the hole diameter of the second airway hole 20a is less than the hole diameter of the first airway hole 10a, so that the functional segment 20 may adjust the draw resistance of the aerosol generating article 100. Meanwhile, the aerosol may collide with the functional segment 20 for heat exchange, so as to provide the effect of cooling and / or filtration for the aerosol.

[0095] Referring to FIG. 6 and FIG. 11, the functional segment 20 is a folded structure or a pleated structure, and the interior of the folded structure or the pleated structure is provided with an interlayer air passage 20b extending in a first direction. In this way, on the basis of implementing the adjustment for the draw resistance of the aerosol generating article 100, it is possible to lengthen the flow path of the aerosol and the contact area with the functional segment 20. Consequently, it additionally has an effect of preliminarily lowering the temperature of the aerosol. Furthermore, the functional segment 20 of the folded structure or pleated structure also have supporting and filtering abilities.

[0096] It is to be understood that the specific material of the functional segment 20 of the folded structure or the folded structure is not limited herein. For example, polylactic acid (PLA), paper material, or the like may be selected to gather to form the shape, and the porosity is controlled to adjust the draw resistance of the aerosol generating article 100.

[0097] The functional segment 20 of the folded structure may be formed by folding the cellulose acetate paper or the like. The cellulose acetate paper is formed by weaving the cellulose acetate fibers. The cellulose acetate fiber, also known as cellulose acetate or acetate fiber, is a chemically modified polymer compound obtained by esterifying hydroxyl groups of cellulose molecules with acetic acid, and includes diacetate fiber and triacetate fiber, and it has good characteristics of acid and alkali resistance and organic solvent resistance.

[0098] The functional segment 20 of the pleated structure may be formed by gathering the polylactic acid (PLA), paper, or the like to form a curved and wavy interlayer air passage 20b, or an interlayer air passage 20b with the pleats on the surface of the air passage.

[0099] In addition, the functional segment 20 may be supported by a phase change material, and the effect of enhancing the reduction of the aerosol temperature is implemented by using the phase change to absorb heat. The phase change material is, for example, polylactic acid (PLA). The PLA is capable of undergoing phase change and melting to absorb heat when the steam flow of 120°C passes through.

[0100] The functional segment 20 is a tow-type structure, for example, a tow-type structure formed by arranging a plurality of tows side by side and bundling them together.

[0101] For example, referring to FIG. 2, FIG. 4, FIG. 5, FIG. 8, and FIG. 9, the tow-type structure is, for example, a solid cellulose acetate structure. The functional segment 20 of the solid cellulose acetate structure may be a solid structure formed by arranging a plurality of cellulose acetate tows side by side. The gap between the tows of the solid cellulose acetate structure forms an airflow hole, and the aerosol generated by the substrate segment 10 may pass through the solid cellulose acetate structure through the airflow hole.

[0102] Referring to FIG. 3, FIG. 8, and FIG. 9, the tow-type structure is, for example, a hollow cellulose acetate structure. The functional segment 20 of the hollow cellulose acetate structure may be a hollow structure formed by a plurality of acetate tows arranged side by side. The gap between the tows of the hollow cellulose acetate structure forms an airflow hole, and the hollow cellulose acetate structure has a fourth cavity 20c extending through both ends of the hollow cellulose acetate structure along the first direction, and the aerosol generated by the substrate segment 10 may pass through the hollow cellulose acetate structure through the airflow hole and the fourth cavity 20c.

[0103] It is to be understood that the airflow holes formed in the solid cellulose acetate structure and the hollow cellulose acetate structure may be holes in a macroscopic sense, or be holes in the microscopic sense, that is, they cannot be directly recognized by the naked eye.

[0104] For example, referring to FIG. 2 to FIG. 7, the number of cooling segments 30 is two, and one of the two cooling segments 30 is a first cooling segment 31, and the other one of the two cooling segments 30 is a second cooling segment 32. At this case, the number of functional segments 20 may be one or more. When the number of cooling segments 30 is two, the embodiment of the present disclosure is described by taking the number of functional segments 20 being one as an example.

[0105] The structures of the two cooling segments 30 may be the same or may be different.

[0106] By providing two cooling segments 30, the two cooling segments 30 cooperate to facilitate buffering the aerosol and lowering the temperature of the aerosol, and enabling the aerosol to be fully mixed before it enters the mouth. That is, by providing two cooling segments 30, it is easier to meet the design requirements for temperature.

[0107] It is to be understood that the arrangement positions of the two cooling segments 30 and the functional segment 20 are not limited herein. Exemplarily, in some embodiments, referring to FIG. 2 to FIG. 6, the functional segment 20 is located between the first cooling segment 31 and the second cooling segment 32. That is, the aerosol generating article 100 includes a substrate segment 10, a first cooling segment 31, a functional segment 20, a second cooling segment 32, and a mouthpiece segment 40, which are arranged sequentially in a first direction. That is, the aerosol generating article 100 includes a substrate segment 10, a first cooling segment 31, a functional segment 20, a second cooling segment 32, and a mouthpiece segment 40 in the order from the lip-distal end to the lip-proximal end.

[0108] The aerosol generated by heating the substrate segment 10 first flows through the first cooling segment 31 for cooling, then flows through the functional segment 20 for draw resistance adjustment, and then flows through the second cooling segment 32 for further cooling. After the further cooling, the aerosol flows through the mouthpiece segment 40, and the mouthpiece segment 40 may filter out the large particle components and undesirable impurities from the aerosol and / or cool down the aerosol. That is, the aerosol generated by heating the substrate segment 10 passes sequentially through the first cooling segment 31, the functional segment 20, the second cooling segment 32, and the mouthpiece segment 40 for cooling, draw resistance adjustment, further cooling, filtering and / or cooling, and then is inhaled by the user.

[0109] In some other embodiments, referring to FIG. 7, the first cooling segment 31 and the second cooling segment 32 are located between the functional segment 20 and the mouthpiece segment 40. That is, the aerosol generating article 100 includes a substrate segment 10, a functional segment 20, a first cooling segment 31, a second cooling segment 32, and a mouthpiece segment 40, which are arranged sequentially in a first direction. That is, the aerosol generating article 100 includes a substrate segment 10, a functional segment 20, a first cooling segment 31, a second cooling segment 32, and a mouthpiece segment 40 in the order from the lip-distal end to the lip-proximal end.

[0110] In other words, the aerosol generated by heating the substrate segment 10 first flows through the functional segment 20 for draw resistance adjustment, and then flows through the first cooling segment 31 and the second cooling segment 32 for cooling twice. After the twice cooling, the aerosol flows through the mouthpiece segment 40, and the mouthpiece segment 40 may filter out the large particle components and undesirable impurities from the aerosol and / or cool down the aerosol. That is, the aerosol generated by heating the substrate segment 10 passes sequentially through the functional segment 20, the first cooling segment 31, the second cooling segment 32, and the mouthpiece segment 40 for draw resistance adjustment, cooling twice, filtering and / or cooling, and then is inhaled by the user.

[0111] Referring to FIG. 2 to FIG. 7, one of the first cooling segment 31 or the second cooling segment 32 is a first hollow structure, and the other one is a second hollow structure. The first hollow structure has a first cavity 30a extending through both ends of the first hollow structure in the first direction, and the second hollow structure has a second cavity 30b extending through both ends of the second hollow structure in the first direction. In a plane perpendicular to the first direction of the aerosol generating article 100, the area of the cross section of the second cavity 30b is less than the area of the cross section of the first cavity 30a.

[0112] The first hollow structure and the second hollow structure may be configured to buffer the aerosol and lower the temperature of aerosol by providing with the first cavity 30a and the second cavity 30b respectively.

[0113] In a plane perpendicular to the first direction of the aerosol generating article 100, the area of the cross section of the second cavity 30b is less than the area of the cross section of the first cavity 30a. That is, the wall thickness of the second hollow structure is greater than the wall thickness of the first hollow structure, thus the structural strength of the second hollow structure is greater than the structural strength of the first hollow structure. That is, the second hollow structure may enhance the supporting effect while buffering the aerosol and lowering the temperature of the aerosol.

[0114] Exemplarily, referring to FIG. 5 and FIG. 10, the first hollow structure further includes a partition 30c, the partition 30c is disposed within the first cavity 30a and partitions the first cavity 30a into a plurality of sub-cavities. By providing the partition 30c, on one hand, the structural strength of the first hollow structure may be improved, thereby improving the supporting force of the first hollow structure, and preventing the substrate segment 10 from moving during the suction process. On the other hand, by providing the partition 30c to partition the first cavity 30a into a plurality of sub-cavities, a plurality of sub-cavities may be used for heat exchange, thereby improving the cooling effect.

[0115] Specifically, the partition 30c is in a shape of a rib, there are a plurality of partitions 30c, one ends of the plurality of partitions 30c are connected to each other, the other ends are connected to the sidewall of the first cavity 30a, the plurality of partitions 30c are radially distributed at the center of the first cavity 30a, and divide the first cavity 30a into a plurality of sub-cavities.

[0116] For example, referring to FIG. 8 and FIG. 9, the number of functional segments 20 is two, and one of the two functional segments 20 is a first functional segment 2120, and the other one of the two functional segments 20 is a second functional segment 2220. At this case, the number of cooling segments 30 may be one or more. When the number of functional segments 20 is two, the embodiment of the present disclosure is described by taking the number of cooling segments 30 being one as an example.

[0117] The structures of the two functional segments 20 may be the same or may be different.

[0118] By providing two functional segments 20, the two functional segments 20 cooperate to facilitate implementing the adjustment for the draw resistance, thereby facilitating satisfying the design requirements for the draw resistance.

[0119] It is to be understood that the arrangement positions of the two functional segments 20 and the cooling segment 30 are not limited herein. Exemplarily, in some embodiments, referring to FIG. 8, the cooling segment 30 is located between the first functional segment 2120 and the second functional segment 2220. That is, the aerosol generating article 100 includes a substrate segment 10, a first functional segment 2120, a cooling segment 30, a second functional segment 2220, and a mouthpiece segment 40, which are arranged sequentially in a first direction. That is, the aerosol generating article 100 includes a substrate segment 10, a first functional segment 2120, a cooling segment 30, a second functional segment 2220, and a mouthpiece segment 40 in the order from the lip-distal end to the lip-proximal end.

[0120] The aerosol generated by heating the substrate segment 10 first flows through the first functional segment 2120 for draw resistance adjustment, then flows through the cooling segment 30 for cooling, and then flows through the second functional segment 2220 for further draw resistance adjustment. The aerosol after flowing through the second functional segment 2220 flows through the mouthpiece segment 40, and the mouthpiece segment 40 may filter out the large particle components and undesirable impurities from the aerosol and / or cool down the aerosol. That is, the aerosol generated by heating the substrate segment 10 passes sequentially through the first functional segment 2120, the cooling segment 30, the second functional segment 2220, and the mouthpiece segment 40 for draw resistance adjustment, cooling, further draw resistance adjustment, filtering and / or cooling, and then is inhaled by the user.

[0121] In some other embodiments, referring to FIG. 9, the first functional segment 2120 and the second functional segment 2220 are located between the cooling segment 30 and the mouthpiece segment 40. That is, the aerosol generating article 100 includes a substrate segment 10, a cooling segment 30, a first functional segment 2120, a second functional segment 2220, and a mouthpiece segment 40, which are arranged sequentially in a first direction. That is, the aerosol generating article 100 includes a substrate segment 10, a cooling segment 30, a first functional segment 2120, a second functional segment 2220, and a mouthpiece segment 40 in the order from the lip-distal end to the lip-proximal end.

[0122] That is, the aerosol generated by heating the substrate segment 10 first flows through the cooling segment 30 for cooling, and then flows through the first functional segment 2120 and the second functional segment 2220 for draw resistance adjustment twice. The aerosol after flowing through the second functional segment 2220 flows through the mouthpiece segment 40, and the mouthpiece segment 40 may filter out the large particle components and undesirable impurities from the aerosol and / or cool down the aerosol. That is, the aerosol generated by heating the substrate segment 10 passes sequentially through the cooling segment 30, the first functional segment 2120, the second functional segment 2220, and the mouthpiece segment 40 for cooling, draw resistance adjustment, and filtering and / or cooling, and then is inhaled by the user.

[0123] The specific structure of the mouthpiece segment 40 is not limited herein. For example, in an embodiment, see FIG. 2 to FIG. 8, the mouthpiece segment 40 is a filter segment, and may be made of cellulose acetate, polyethylene terephthalate (PET), polysaccharide, propylene fiber and the like. When the solid cellulose acetate structure is formed by arranging a plurality of cellulose acetate tows side by side, the gap between the tows of the solid cellulose acetate structure forms an airflow hole, and during the process of the airflow passing through the airflow hole, since the solid cellulose acetate structure has a greater surface area, it may serve to filter the airflow, thereby filtering impurities wrapped in the airflow, and jointly controls the draw resistance of the aerosol generating article 100 with the functional segment 20, so that the aerosol generating article 100 meets the design requirements and improves the user experience.

[0124] In some another embodiment, referring to FIG. 9, the mouthpiece segment 40 is a third hollow structure 41. The third hollow structure 41 has a third cavity 41a extending through both ends of the third hollow structure 41 along the first direction. The arrangement of the third cavity 41a may lengthen the flow path of the aerosol and has an effect of lowering the temperature of the aerosol.

[0125] The third hollow structure 41 may be, for example, a hollow paper tube, a hollow acetate fiber structure, a corrugated paper tube, or the like.

[0126] Exemplarily, the substrate segment 10, the functional segment 20, the cooling segment 30, and the mouthpiece segment 40 are cylinders and disposed coaxially, and the first direction is the axial direction of the substrate segment 10, the functional segment 20, the cooling segment 30, and the mouthpiece segment 40. By arranging the substrate segment 10, the functional segment 20, the cooling segment 30, and the mouthpiece segment 40 all as cylinders, and arranging them in sequence along the axial direction of the substrate segment 10, the functional segment 20, the cooling segment 30, and the mouthpiece segment 40, the structure of the aerosol generating article 100 may be more compact, and thus the user experience may be improved.

[0127] Eight specific embodiments will be briefly described below with reference to the accompanying drawings.First embodiment

[0128] For example, referring to FIG. 2, in the embodiment, the number of cooling segments 30 is two, and one of the two cooling segments 30 is a first cooling segment 31, and the other one of the two cooling segments 30 is a second cooling segment 32. The number of functional segments 20 is one.

[0129] The aerosol generating article 100 includes a substrate segment 10, a first cooling segment 31, a functional segment 20, a second cooling segment 32, and a mouthpiece segment 40, which are arranged sequentially in a first direction. The substrate segment 10, the first cooling segment 31, the functional segment 20, the second cooling segment 32, and the mouthpiece segment 40 are separable structures. That is, the aerosol generating article 100 is a five-segment combination structure formed by combining sequentially the substrate segment 10, the first cooling segment 31, the functional segment 20, the second cooling segment 32, and the mouthpiece segment 40.

[0130] The functional segment 20 is a tow-type structure, such as the solid cellulose acetate structure. The functional segment 20 of the solid cellulose acetate structure may be a solid structure formed by arranging a plurality of cellulose acetate tows side by side. The gap between the tows of the solid cellulose acetate structure forms an airflow hole, and the aerosol generated by the substrate segment 10 may pass through the solid cellulose acetate structure through the airflow hole, which has the effect of adjusting the draw resistance.

[0131] The first cooling segment 31 is a first hollow structure, and the first hollow structure has the first cavity 30a extending through both ends of the first hollow structure along the first direction, and the first cavity 30a may be configured to buffer the aerosol and reduce the temperature of the aerosol. The first hollow structure is, for example, a hollow paper tube.

[0132] The second cooling segment 32 is a second hollow structure. The second hollow structure has a second cavity 30b extending through both ends of the second hollow structure along the second direction, and the second cavity 30b may be configured to buffer the aerosol and reduce the temperature of the aerosol. The second hollow structure is, for example, a hollow tube.

[0133] In a plane perpendicular to the first direction of the aerosol generating article 100, the area of the cross section of the second cavity 30b is less than the area of the cross section of the first cavity 30a. That is, the wall thickness of the second hollow structure is greater than the wall thickness of the first hollow structure, thus the structural strength of the second hollow structure is greater than the structural strength of the first hollow structure. That is, the second hollow structure may enhance the supporting effect for the aerosol generating article 100 while buffering the aerosol and lowering the temperature of the aerosol. Furthermore, since the area of the cross section of the second cavity 30b is less than the area of the cross section of the first cavity 30a, the airflow flows from a larger space to a smaller space, and the velocity of the aerosol may be increased. That is, the aerosol may be extracted quickly.

[0134] The mouthpiece segment 40 is a filter segment, which may be made of cellulose acetate, polyethylene terephthalate (PET), polysaccharide, propylene fiber and other materials. When the solid cellulose acetate structure is formed by arranging a plurality of cellulose acetate tows side by side, the gap between the tows of the solid cellulose acetate structure forms an airflow hole, and during the process of the airflow passing through the airflow hole, since the solid cellulose acetate structure has a greater surface area, it may serve to filter the airflow, thereby filtering impurities wrapped in the airflow, and jointly adjusts the draw resistance of the aerosol generating article 100 with the functional segment 20, so that the aerosol generating article 100 meets the design requirements and improves the user experience.

[0135] The interior of the substrate segment 10 is provided with at least one first airway hole 10a, and the first airway hole 10a extends through at least one end of the substrate segment 10 in the first direction.

[0136] The substrate segment 10 is an integral structure with the macro and / or micro pores structure and is produced by extrusion, injection molding or die casting processes, and the draw resistance of the substrate segment 10 mainly depends on its own porosity, i.e., the hole diameter and number of the first airway holes 10a. The upper end adopts a four-segment structure design composed of the first cooling segment 31, the functional segment 20, the second cooling segment 32 and the mouthpiece segment 40, which ensures effective cooling and aerosol extraction while incorporating the draw resistance adjustment functionality, such that the draw resistance of the aerosol generation article 100 may meet the design requirements.Second embodiment

[0137] Referring to FIG. 3, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the first embodiment, and the differences mainly include that: in this embodiment, the functional segment 20 is a hollow cellulose acetate structure.

[0138] The functional segment 20 of the hollow cellulose acetate structure may be a hollow structure formed by a plurality of cellulose acetate tows arranged side by side. The gap between the tows of the hollow cellulose acetate structure forms an airflow hole, and the hollow cellulose acetate structure has a fourth cavity 20c extending through both ends of the hollow cellulose acetate structure along the first direction, and the aerosol generated by the substrate segment 10 may pass through the hollow cellulose acetate structure through the airflow hole and the fourth cavity 20c, which serves to adjust the draw resistance.

[0139] In a plane perpendicular to the first direction of the aerosol generating article 100, the area of the cross section of the fourth cavity 20c is less than the area of the cross section of the first cavity 30a. Accordingly, when the airflow enters the fourth cavity 20c from the first cavity 30a, a Venturi effect may be generated, such that the cooling effect on the aerosol may be improved. The Venturi effect is manifested in the phenomenon that the velocity of the fluid increases when the restricted flow passes through the reduced flow area, and its velocity is inversely proportional to the flow area.Third embodiment

[0140] Referring to FIG. 4, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the first embodiment, and the differences mainly include that: in this embodiment, the aerosol generating article 100 includes a substrate segment 10, a second cooling segment 32, a functional segment 20, a first cooling segment 31, and a mouthpiece segment 40 that are arranged sequentially in a first direction. The substrate segment 10, the second cooling segment 32, the functional segment 20, the first cooling segment 31, and the mouthpiece segment 40 may be separable structures. That is, the aerosol generating article 100 is a five-segment combination structure formed by combining sequentially the substrate segment 10, the second cooling segment 32, the functional segment 20, the first cooling segment 31, and the mouthpiece segment 40.Fourth embodiment

[0141] Referring to FIG. 5 and FIG. 10, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the first embodiment, and the differences mainly include that: in this embodiment, the first hollow structure further includes a partition 30c, the partition 30c is disposed in the first cavity 30a and divides the first cavity 30a into a plurality of sub-cavities.

[0142] By providing the partition 30c, on one hand, the structural strength of the first hollow structure may be improved, thereby improving the supporting force of the first hollow structure, and preventing the substrate segment 10 from moving during the suction process. On the other hand, by providing the partition 30c to partition the first cavity 30a into a plurality of sub-cavities, a plurality of sub-cavities may be used for heat exchange, thereby improving the cooling effect.

[0143] Specifically, the partition 30c is in the shape of a rib, and there are a plurality of partitions 30c. One ends of the plurality of partitions 30c are connected to each other, the other ends of the plurality of partitions 30c are connected to the sidewall of the first cavity 30a, the plurality of partitions 30c are radially distributed at the center of the first cavity 30a, and divide the first cavity 30a into a plurality of sub-cavities.Fifth embodiment

[0144] Referring to FIG. 6 and FIG. 11, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the second embodiment, and the differences mainly include that: in this embodiment, the functional segment 20 is a folded structure or a pleated structure, and the interior of the folded structure or the pleated structure is provided with an interlayer air passage 20b extending in a first direction. In this way, on the basis of implementing the adjustment for the draw resistance of the aerosol generating article 100, it is possible to lengthen the flow path of the aerosol and the contact area with the functional segment 20. Consequently, it additionally has an effect of preliminarily lowering the temperature of the aerosol. Furthermore, the functional segment 20 of the folded structure or pleated structure also have supporting and filtering functions.

[0145] It is to be understood that the specific material of the functional segment 20 of the folded structure or the folded structure is not limited herein. For example, polylactic acid (PLA), paper material, or the like may be selected to gather to form the shape, and the porosity is controlled to adjust the draw resistance of the aerosol generating article 100.

[0146] The functional segment 20 of the folded structure may be formed by folding the cellulose acetate paper or the like. The cellulose acetate paper is formed by weaving the cellulose acetate fibers. The cellulose acetate fiber, also known as cellulose acetate or acetate fiber, is a chemically modified polymer compound obtained by esterifying hydroxyl groups of cellulose molecules with acetic acid, and includes diacetate fiber and triacetate fiber, and it has good characteristics of acid and alkali resistance and organic solvent resistance.

[0147] The functional segment 20 of the pleated structure may be formed by gathering the polylactic acid (PLA), paper, or the like to form a curved and wavy interlayer air passage 20b, or an interlayer air passage 20b with the pleats on the surface of the air passage.

[0148] In addition, the functional segment 20 may be supported by a phase change material, and the effect of enhancing the reduction of the aerosol temperature is implemented by using the phase change to absorb heat. The phase change material is, for example, polylactic acid (PLA). The PLA is capable of undergoing phase change and melting to absorb heat when the steam flow of 120°C passes through.Sixth embodiment

[0149] Referring to FIG. 7, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the first embodiment, and the differences mainly include that: in this embodiment, the aerosol generating article 100 includes a substrate segment 10, a functional segment 20, a first cooling segment 31, a second cooling segment 32, and a mouthpiece segment 40 that are arranged sequentially in a first direction. The substrate segment 10, the functional segment 20, the first cooling segment 31, the second cooling segment 32, and the mouthpiece segment 40 may be separable structures. That is, the aerosol generating article 100 is a five-segment combination structure formed by combining sequentially the substrate segment 10, the functional segment 20, the first cooling segment 31, the second cooling segment 32, and the mouthpiece segment 40.

[0150] The functional segment 20 may be an integral structure formed by the extrusion. The functional segment 20 produced as the integral structure by the extrusion molding process has the function of temperature resistance and preventing thermal collapse in addition to the function of adjusting the draw resistance. Further, the flavor may be loaded according to the style characteristics of the product to enhance the richness of the aerosol. The extrusion molding may refer to a processing method in which the raw material mixture of the functional segment 20 is added into an extruder, the material mixture is plasticized by heat and is pushed forward by a screw under the action of the barrel and the screw of the extruder, and continuously passes through the die at the outlet of the extruder, to form the articles or semi-finished articles with various cross-sections.

[0151] Exemplarily, in some embodiments, the composition of the functional segment 20 is the same as the composition of the substrate segment 10. In this way, during use, the functional segment 20 does not bring undesirable odors, thereby avoiding affecting the taste of the aerosol. In addition, the composition of the functional segment 20 is the same as the composition of the substrate segment 10, which is more beneficial for the functional segment 20 and the substrate segment 10 to be manufactured by the same manufacturing process and raw materials, such that the production efficiency is improved.

[0152] In some other embodiments, the composition of the functional segment 20 is different from the composition of the substrate segment 10. For example, the functional segment 20 may be produced from different materials such as plant materials, polysaccharides, silica gel, resins, etc.

[0153] The interior of the functional segment 20 is provided with at least one second airway hole 20a, and the second airway hole 20a extends through at least one end of the functional segment 20 in the first direction.

[0154] The functional segment 20 adjusts the draw resistance by providing with the second airway hole 20a and controlling the design parameter of the second airway hole 20a, for example, by controlling the parameters such as the number of the second airway holes 20a of the functional segment 20, the cross-sectional area (hydraulic diameter) of the second airway hole 20a, and the cross-sectional area of the functional segment 20.

[0155] When the functional segment 20 is provided with a plurality of second airway holes 20a, the aerosol may perform heat exchange with the hole walls of the second airway holes 20a when flowing through the second airway holes 20a, and the temperature of the aerosol may be effectively reduced by using the multi-airway heat exchange.Seventh embodiment

[0156] Referring to FIG. 8, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the first embodiment, and the differences mainly include that: the number of cooling segments 30 is one, the number of functional segments 20 is two, and one of the functional segments 20 is the first functional segment 2120, and the other one of the functional segments 20 is the second functional segment 2220.

[0157] The cooling segment 30 is located between the first functional segment 2120 and the second functional segment 2220. That is, the aerosol generating article 100 includes a substrate segment 10, a first functional segment 2120, a cooling segment 30, a second functional segment 2220, and a mouthpiece segment 40, which are arranged sequentially in a first direction. That is, the aerosol generating article 100 includes a substrate segment 10, a first functional segment 2120, a cooling segment 30, a second functional segment 2220, and a mouthpiece segment 40 in the order from the lip-distal end to the lip-proximal end.

[0158] The cooling segment 30 is a first hollow structure, and the first hollow structure has the first cavity 30a extending through both ends of the first hollow structure along the first direction, and the first cavity 30a may be configured to buffer the aerosol and reduce the temperature of the aerosol. The first hollow structure is, for example, a hollow paper tube.

[0159] The first functional segment 2120 may be an integral structure formed by the extrusion.

[0160] The first functional segment 2120 produced as the integral structure by the extrusion molding process has the function of temperature resistance and preventing thermal collapse in addition to the function of adjusting the draw resistance. Further, the flavor may be loaded according to the style characteristics of the product to enhance the richness of the aerosol. The extrusion molding may refer to a processing method in which the raw material mixture constituting the first functional segment 2120 is added into an extruder, the material mixture is plasticized by heat and is pushed forward by a screw under the action of the barrel and the screw of the extruder, and continuously passes through the die at the outlet of the extruder, to form the articles or semi-finished articles with various cross-sections.

[0161] The interior of the first functional segment 2120 is provided with at least one second airway hole 20a, and the second airway hole 20a extends through at least one end of the functional segment 20 in the first direction.

[0162] The second functional segment 2220 is a hollow cellulose acetate structure.

[0163] The second functional segment 2220 of the hollow cellulose acetate structure may be a hollow structure formed by a plurality of cellulose acetate tows arranged side by side. The gap between the tows of the hollow cellulose acetate structure forms an airflow hole, and the hollow cellulose acetate structure has a fourth cavity 20c extending through both ends of the hollow cellulose acetate structure along the first direction, and the aerosol generated by the substrate segment 10 may pass through the hollow cellulose acetate structure through the airflow hole and the fourth cavity 20c, which serves to adjust the draw resistance.

[0164] In a plane perpendicular to the first direction of the aerosol generating article 100, the area of the cross section of the fourth cavity 20c is less than the area of the cross section of the first cavity 30a. Accordingly, when the airflow enters the fourth cavity 20c from the first cavity 30a, a Venturi effect may be generated, such that the cooling effect on the aerosol may be improved. The Venturi effect is manifested in the phenomenon that the velocity of the fluid increases when the restricted flow passes through the reduced flow area, and its velocity is inversely proportional to the flow area.Eighth embodiment

[0165] Referring to FIG. 9, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the seventh embodiment, and the differences mainly include followings.

[0166] The first functional segment 2120 and the second functional segment 2220 are located between the cooling segment 30 and the mouthpiece segment 40. That is, the aerosol generating article 100 includes a substrate segment 10, a cooling segment 30, a first functional segment 2120, a second functional segment 2220, and a mouthpiece segment 40, which are arranged sequentially in a first direction. That is, the aerosol generating article 100 includes a substrate segment 10, a cooling segment 30, a first functional segment 2120, a second functional segment 2220, and a mouthpiece segment 40 in the order from the lip-distal end to the lip-proximal end.

[0167] The first functional segment 2120 is a hollow cellulose acetate structure.

[0168] The first functional segment 2120 of the hollow cellulose acetate structure may be a hollow structure formed by a plurality of cellulose acetate tows arranged side by side. The gap between the tows of the hollow cellulose acetate structure forms an airflow hole, and the hollow cellulose acetate structure has a fourth cavity 20c extending through both ends of the hollow cellulose acetate structure along the first direction, and the aerosol generated by the substrate segment 10 may pass through the hollow cellulose acetate structure through the air flow hole and the fourth cavity 20c, which serves to adjust the draw resistance.

[0169] In a plane perpendicular to the first direction of the aerosol generating article 100, the area of the cross section of the fourth cavity 20c is less than the area of the cross section of the first cavity 30a. Accordingly, when the airflow enters the fourth cavity 20c from the first cavity 30a, a Venturi effect may be generated, such that the cooling effect on the aerosol may be improved. The Venturi effect is manifested in the phenomenon that the velocity of the fluid increases when the restricted flow passes through the reduced flow area, and its velocity is inversely proportional to the flow area.

[0170] The second functional segment 2220 is a tow-type structure, such as a solid cellulose acetate structure.

[0171] The gap between the tows of the solid cellulose acetate structure forms an airflow hole, and during the process of the airflow passing through the airflow hole, since the solid cellulose acetate structure has a greater surface area, it may serve to filter the airflow, thereby filtering impurities wrapped in the airflow, and jointly adjusts the draw resistance of the aerosol generating article 100 with the functional segment 20, so that the aerosol generating article 100 meets the design requirements and improves the user experience.

[0172] The mouthpiece segment 40 is a third hollow structure 41. The third hollow structure 41 has a third cavity 41a extending through both ends of the third hollow structure 41 along the first direction. The arrangement of the third cavity 41a may lengthen the flow path of the aerosol and has an effect of lowering the temperature of the aerosol.

[0173] The third hollow structure 41 may be, for example, a hollow paper tube, a hollow acetate fiber structure, a corrugated paper tube, or the like.

[0174] In the description of the present disclosure, the description for the reference expressions "in an embodiment", "in some embodiments", "in some other embodiments", "in yet some embodiments", "for example", or the like refers to that specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present disclosure, the illustrative description for the above expressions do not necessarily refer to the same embodiment or example. Further, the described specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples. Further, those skilled in the art may combine different embodiments or examples described in the present disclosure and features of different embodiments or examples without conflicting.

[0175] The above descriptions are merely preferred embodiments of the present disclosure, and are not intended to limit the present disclosure, and various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement and improvement made within the spirit and scope of the present disclosure all fall within the protection scope of the present disclosure.

Examples

first embodiment

[0128]For example, referring to FIG. 2, in the embodiment, the number of cooling segments 30 is two, and one of the two cooling segments 30 is a first cooling segment 31, and the other one of the two cooling segments 30 is a second cooling segment 32. The number of functional segments 20 is one.

[0129]The aerosol generating article 100 includes a substrate segment 10, a first cooling segment 31, a functional segment 20, a second cooling segment 32, and a mouthpiece segment 40, which are arranged sequentially in a first direction. The substrate segment 10, the first cooling segment 31, the functional segment 20, the second cooling segment 32, and the mouthpiece segment 40 are separable structures. That is, the aerosol generating article 100 is a five-segment combination structure formed by combining sequentially the substrate segment 10, the first cooling segment 31, the functional segment 20, the second cooling segment 32, and the mouthpiece segment 40.

[0130]The functional segment 20...

second embodiment

[0137]Referring to FIG. 3, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the first embodiment, and the differences mainly include that: in this embodiment, the functional segment 20 is a hollow cellulose acetate structure.

[0138]The functional segment 20 of the hollow cellulose acetate structure may be a hollow structure formed by a plurality of cellulose acetate tows arranged side by side. The gap between the tows of the hollow cellulose acetate structure forms an airflow hole, and the hollow cellulose acetate structure has a fourth cavity 20c extending through both ends of the hollow cellulose acetate structure along the first direction, and the aerosol generated by the substrate segment 10 may pass through the hollow cellulose acetate structure through the airflow hole and the fourth cavity 20c, which serves to adjust the draw resistance.

[0139]In a plane perpendicular to the first direction of the aerosol generating ar...

third embodiment

[0140]Referring to FIG. 4, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the first embodiment, and the differences mainly include that: in this embodiment, the aerosol generating article 100 includes a substrate segment 10, a second cooling segment 32, a functional segment 20, a first cooling segment 31, and a mouthpiece segment 40 that are arranged sequentially in a first direction. The substrate segment 10, the second cooling segment 32, the functional segment 20, the first cooling segment 31, and the mouthpiece segment 40 may be separable structures. That is, the aerosol generating article 100 is a five-segment combination structure formed by combining sequentially the substrate segment 10, the second cooling segment 32, the functional segment 20, the first cooling segment 31, and the mouthpiece segment 40.

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application is based on, and claims priority to Chinese Patent Application No. 202310932786.X, filed on July 26, 2023, the disclosure of which is hereby incorporated by reference in its entirety.TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of smoking articles, in particular to an aerosol generating article and an aerosol generating system.BACKGROUND

[0003] This section is intended to provide the background or context for the embodiments of the present disclosure as set forth in the claims. The description herein is not acknowledged as the prior art by virtue of its inclusion in this section.

[0004] The smoking articles include smoking articles which form the aerosol by ignition, and smoking articles which form the aerosol by heating without combustion. In a typical smoking article by heating without combustion, it includes an aerosol generating substrate which can volatilize upon heating to produce the aerosol. The aerosol generating substrate is heated by an external heat source so that the aerosol generating substrate is heated just enough to emit a flavor. The aerosol generating substrate will not burn but is loaded with the atomizing agent, and when used, the atomizing agent is released by heating through a high temperature to form a smoke.

[0005] The draw resistance of the smoking articles during smoking process is an important indicator for the smoking articles. In the related art, the draw resistance of the smoking articles is too low or too high, resulting in reducing the experience of users.SUMMARY

[0006] In view of the above, it is desirable to provide an aerosol generating article with a suitable draw resistance and an aerosol generating system.

[0007] In order to implement the above object, the embodiments of the present disclosure provide an aerosol generating article, which includes a substrate segment, a functional segment, a cooling segment, and a mouthpiece segment that are arranged in a first direction.

[0008] A draw resistance of the functional segment is different from a draw resistance of the substrate segment, and the mouthpiece segment is configured to filter and / or cool an aerosol.

[0009] At least one of a number of the functional segments or a number of the cooling segments is two, and both the functional segment and the cooling segment are located between the substrate segment and the mouthpiece segment.

[0010] The substrate segment is an integral structure, at least one first airway hole is provided within an interior of the substrate segment, and the at least one first airway hole extends through at least one end of the substrate segment along a first direction.

[0011] In an implementation, the number of cooling segments is two, and one of the two cooling segments is a first cooling segment, and the other one of the two cooling segments is a second cooling segment.

[0012] In an implementation, the functional segment is located between the first cooling segment and the second cooling segment; or the first cooling segment and the second cooling segment are located between the functional segment and the mouthpiece segment.

[0013] In an implementation, one of the first cooling segment or the second cooling segment is a first hollow structure, the other one of the first cooling segment or the second cooling segment is a second hollow structure; the first hollow structure is provided with a first cavity extending through both ends of the first hollow structure in a first direction, and the second hollow structure is provided with a second cavity extending through both ends of the second hollow structure in the first direction, and in a plane perpendicular to the first direction of the aerosol generating article, an area of a cross section of the second cavity is less than an area of a cross section of the first cavity.

[0014] In an implementation, the first hollow structure further comprises a partition, the partition is disposed within the first cavity and partitions the first cavity into a plurality of sub-cavities.

[0015] In an implementation, the number of functional segments is two, and one of the two functional segments is a first functional segment, and the other one of the two functional segments is a second functional segment.

[0016] In an implementation, the cooling segment is located between the first functional segment and the second functional segment; or the first functional segment and the second functional segment are located between the cooling segment and the mouthpiece segment.

[0017] In an implementation, the functional segment is a mesh-like structure, a folded structure, a pleated structure, or a tow-like structure.

[0018] In an implementation, the substrate segment, the functional segment, the cooling segment, and the mouthpiece segment are separable structures, and the functional segment is an integral structure.

[0019] In an implementation, at least one second airway hole is provided in an interior of the functional segment, and the at least one second airway hole extends through at least one end of the functional segment in the first direction.

[0020] In an implementation, the mouthpiece segment is a filter segment, or the mouthpiece segment is a third hollow structure, and the third hollow structure is provided a third cavity extending through both ends of the third hollow structure in the first direction.

[0021] In an implementation, the substrate segment, the functional segment, the cooling segment, and the mouthpiece segment are cylindrical and disposed coaxially, and the first direction is an axial direction of the substrate segment, the functional segment, the cooling segment, and the mouthpiece segment.

[0022] The draw resistance of the functional segment is different from the draw resistance of the substrate segment.

[0023] The embodiments of the present disclosure provide an aerosol generating article. The aerosol generating article includes a substrate segment, a functional segment, a cooling segment, and a mouthpiece segment, which are arranged in a first direction. The substrate segment generates the aerosol when heated, and the mouthpiece segment may be configured to filter and / or cool the aerosol. On one hand, in the embodiments of the present disclosure, by incorporating a functional segment with a draw resistance different from the draw resistance of the substrate segment, it facilitates maintaining the draw resistance of the aerosol generating article within an appropriate range, i.e., ensuring a suitable draw resistance for the aerosol generating article. On the other hand, by controlling the number of functional segments and the number of the cooling segments such that at least one of the number of functional segments or the number of the cooling segments is two, it further facilitates the control for the draw resistance of the aerosol generating article 100 and the temperature of the aerosol, thereby improving the user experience. In addition, the substrate segment is an integral structure. For example, the substrate segment may be formed by extrusion, die casting or injection processes, to improve the uniformity of the density of the substrate segment and improve the stability of aerosol release and suction.BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG. 1 is a schematic structural diagram of an aerosol generating article according to an embodiment of the present disclosure. FIG. 2 is a cross-sectional view of the aerosol generating article illustrated in FIG. 1, with the dashed arrows indicating the flow direction of airflow in the aerosol generating article. FIG. 3 is a cross-sectional view of an aerosol generating article according to a second embodiment of the present disclosure. FIG. 4 is a cross-sectional view of an aerosol generating article according to a third embodiment of the present disclosure. FIG. 5 is a cross-sectional view of an aerosol generating article according to a fourth embodiment of the present disclosure. FIG. 6 is a cross-sectional view of an aerosol generating article according to a fifth embodiment of the present disclosure. FIG. 7 is a cross-sectional view of an aerosol generating article according to a sixth embodiment of the present disclosure. FIG. 8 is a cross-sectional view of an aerosol generating article according to a seventh embodiment of the present disclosure. FIG. 9 is a cross-sectional view of an aerosol generating article according to an eighth embodiment of the present disclosure. FIG. 10 is a schematic structural diagram of a first cooling segment illustrated in FIG. 5. FIG. 11 is a schematic structural diagram of a functional segment illustrated in FIG. 6. DETAILED DESCRIPTION

[0025] It is to be noted that without causing any conflict, the embodiments of the present disclosure and the technical features in the embodiments may be combined with each other, and the detailed description in the specific implementations should be understood as an explanation for the purpose of the present disclosure and should not be regarded as an undue limitation on the present disclosure.

[0026] In the description of the present disclosure, the orientation or positional relationship of "first direction" is based on the orientation or positional relationship illustrated in FIG. 1 and FIG. 2. It is to be noted that these orientation terms are merely for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and be constructed and operate in a specific orientation, and thus cannot be understood as a limitation for the present disclosure.

[0027] The embodiments of the present application provide an aerosol generating article. Referring to FIG. 1 to FIG. 10, the aerosol generating article includes a substrate segment 10, a functional segment 20, a cooling segment 30, and a mouthpiece segment 40 that are arranged in a first direction. Both the functional segment 20 and the cooling segment 30 are located between the substrate segment 10 and the mouthpiece both 40. That is, the substrate segment 10 and the mouthpiece segment 40 are located at the two ends of the aerosol generating article 100, respectively. The substrate segment 10 is the lip-distal end of the aerosol generating article 100 and the mouthpiece segment 40 is the lip-proximal end of the aerosol generating article 100.

[0028] The lip-proximal end refers to the end of the aerosol generating article 100 close to the user when the user uses the aerosol generating article 100, and the lip-distal end refers to the end of the aerosol generating article 100 away from the user when the user uses the aerosol generating article 100.

[0029] The draw resistance of the functional segment 20 is different from the draw resistance of the substrate segment 10, so that the draw resistance of the aerosol generating article 100 may be maintained within an appropriate range by controlling the draw resistance of the functional segment 20.

[0030] It is to be understood that since the aerosol flows through the functional segment 20, the functional segment 20 may also provide a certain cooling effect on the aerosol.

[0031] The cooling segment 30 is located between the filter segment and the substrate segment 10, and may be, for example, a hollow paper tube, a hollow acetate fiber structure, a corrugated paper tube, or the like, and the cooling segment 30 is mainly used for lowering the aerosol temperature.

[0032] The mouthpiece segment 40 may be configured to filter and / or cool the aerosol.

[0033] The mouthpiece segment 40 is located at the lip-proximal end of the aerosol generating article 100, and may be made of cellulose acetate, polyethylene terephthalate (PET), polysaccharide, propylene fiber or other materials. The mouthpiece segment 40 is mainly used for filtering, and adjusting the draw resistance of the aerosol generating article 100 in conjunction with the functional segment 20 to enable the draw resistance of the aerosol generating article 100 to meet the design requirements. The mouthpiece segment 40 may also directly use a hollow paper tube to extend the flow path of the aerosol and reduce the temperature of the aerosol.

[0034] At least one of the number of the functional segments 20 or the number of the cooling segments 30 is two. For example, in some embodiments, the number of the functional segments 20 is two, and the number of the cooling segment 30 may be one or more. In some other embodiments, the number of cooling segments 30 is two, and the number of functional segments 20 may be one or more.

[0035] The aerosol generating article 100 relies on the substrate segment 10 to generate the aerosol, and the functional segment 20, the cooling segment 30, and the mouthpiece segment 40 are not used to generate the aerosol.

[0036] It is to be understood that the aerosol generating article 100 according to the embodiments of the present disclosure may be used for suction by ignition, or may be used for suction by heating without combustion. In the embodiments of the present disclosure, the description is made by taking the aerosol generating article 100 being used for suction by heating without combustion as an example.

[0037] The aerosol generating article 100 is used in combination with an aerosol generating device.

[0038] The substrate segment 10 is configured to, when heated, generate the aerosol for suction by a user.

[0039] In an embodiment of the present disclosure, the substrate segment 10 is substantially in a columnar shape. The columnar shape may be a cylindrical shape (i.e., the cross section is circular), a prismatic shape (i.e., the cross section is polygonal), an elliptical cylindrical shape (i.e., the cross section is elliptical), or the like, which is not limited herein.

[0040] The substrate segment 10, the functional segment 20, the cooling segment 30 and the mouthpiece segment 40 may be separable structures, and they are not connected together by mechanical and physical structures or adhesives, but two of them may be in contact. The substrate segment 10, the functional segment20, the cooling segment 30 and the mouthpiece segment 40 form a combined-type structure, so that different substrate segments 10, different functional segments 20, different cooling segments 30 and different mouthpiece segments 40 may be reasonably combined to meet different suction requirements of users.

[0041] Exemplarily, the substrate segment 10 is a particle combination (also referred to as a powder combination), and is a restructured tobacco substrate, such as a restructured tobacco substrate containing components such as smoking agent, tobacco, etc. The substrate segment 10 is an integral structure, which may be formed, for example, by extrusion, injection molding, or die-casting molding process. The extrusion molding refers to a processing method in which the raw material mixture is added into an extruder, the material is pushed forward by a screw under the action of the barrel and the screw of the extruder, and continuously passes through the die at the outlet of the extruder, to form the articles or semi-finished articles with various cross-sections. The structure of the substrate formed by performing extrusion molding is a strip shape. In this way, the substrate segment 10 remains an integral substrate during and after heating and inhalation, and the case of disintegration and falling is not easy to occur, thereby solving the problems of, for example, sheet loosening, filament component or particle component falling off, and difficulty in cleaning occur on the substrate segment 10 in the form of sheet, filament or loose particles, and the problem of non-uniform compositions in the related art.

[0042] The interior of the substrate segment 10 is provided with at least one first airway hole 10a, and referring to FIG. 2 to FIG. 9, the first airway hole 10a extends through at least one end of the substrate segment 10 in the first direction.

[0043] The case that the interior of the substrate segment 10 is provided with at least one first airway hole 10a indicates that the interior of the substrate segment 10 is provided with one first airway hole 10a, or the interior of the substrate segment 10 is provided with a plurality of first airway holes 10a.

[0044] It is to be noted that "a plurality of" as used in the embodiments of the present disclosure refers to two or more.

[0045] In some embodiments, the first airway hole 10a extend through the same end of the substrate segment 10 in the first direction, and the other end is closed.

[0046] In some other embodiments, part of the first airway holes 10a extend through one end of the substrate segment 10 in the first direction, and other part of the first airway holes 10a extend through the other end of the substrate segment 10 in the first direction.

[0047] In some other embodiments, referring to FIG. 2 to FIG. 9, each first airway hole 10a extends through both ends of the substrate segment 10 in the first direction. That is, the first airway hole 10a extends along the first direction of the substrate segment 10, and the airflow may flow from one end of the substrate segment 10 to the other end of the substrate segment 10 through the first airway hole 10a. Preferably, the first airway hole 10a is parallel to the central axis of the substrate segment 10.

[0048] The hole wall of the first airway hole 10a constitutes the inner surface of the substrate segment 10, and the first airway hole 10a may increase the inner surface area of the substrate segment 10 to facilitate heat transfer, and improve heating efficiency. In addition, the substrate segment 10 is heated to generate the aerosol, and the aerosol is collected in the first airway hole 10a, and transported to the suction end under the action of suction negative pressure. The first airway hole 10a may reduce the draw resistance experienced by the user during smoking and improve the user experience. It is to be noted that the draw resistance is positively correlated with the flow resistance of the aerosol, and the lower the flow resistance of the aerosol in the substrate segment 10, the lower the draw resistance experienced by the user, and the higher the flow resistance of the aerosol in the substrate segment 10, the higher the draw resistance experienced by the user.

[0049] It is to be noted that the shape of the first airway hole 10a is not limited herein. For example, on a plane perpendicular to the first direction of the substrate segment 10, the cross-sectional shape of the first airway hole 10a is, but is not limited to, circular (as in FIG. 2 to FIG. 9), oval, track-shaped or polygonal, and the polygonal shape includes a regular or irregular polygon.

[0050] The track-shape refers to the shape similar to the athletics track, which is formed by alternately connecting two semicircles and two parallel straight sides.

[0051] The cross-sectional shape of the first airway hole 10a refers to the cross-sectional shape of the first airway hole 10a taken in a plane perpendicular to the first direction of the substrate segment 10.

[0052] Further, the cross-sectional shapes of the first airway holes 10a may be the same. Alternatively, the cross-sectional shapes of at least two first airway holes 10a are different. For example, the cross-sectional shape of at least one first airway hole 10a may be circular, and the cross-sectional shape of at least one first airway hole 10a may be polygonal.

[0053] For example, referring to FIG. 1 to FIG. 9, the aerosol generating article 100 includes a wrapping layer 50. The wrapping layer 50 is configured to wrap around the circumferential surface of the substrate segment 10, the functional segment 20, the cooling segment 30, and the mouthpiece segment 40.

[0054] The wrapping layer 50 has a certain degree of hardness, and may provide a certain protection to the substrate segment 10, reduce the surface area of the substrate segment 10 directly exposed to the outside, such that the probability of the substrate segment 10 being deteriorated by moisture due to contact with air is reduced, and meanwhile, the probability of contamination from contact with other components within the aerosol generating device is reduced.

[0055] It is to be noted that the substrate segment 10 and the wrapping layer 50 may be an integral structure. That is, the substrate segment 10 and the wrapping layer 50 are different parts of an integral structure. Therefore, on one hand, fixing the relative position of the substrate segment 10 and the wrapping layer 50 may reduce the probability of separation of the substrate segment 10 and the wrapping layer 50 due to factors such as temperature change and vibration during use of the aerosol generating article 100. On the other hand, the substrate segment 10 and the wrapping layer 50 may be produced simultaneously, thereby reducing the producing steps and improving the production efficiency.

[0056] For example, the integral structure of the substrate segment and the wrapping layer 50 is formed by a co-extrusion process.

[0057] Of course, the substrate segment 10 and the wrapping layer 50 may be separate structures.

[0058] The embodiments of the present disclosure further provide an aerosol generating system. The aerosol generating system includes an aerosol generating device and an aerosol generating article provided by the embodiments of the present disclosure. The aerosol generating device includes a heating element (not shown), which is configured to heat the substrate segment 10 to generate the aerosol.

[0059] Specifically, the aerosol generating device includes a housing and a power supply component disposed in the housing. The housing has a containment chamber, an electric energy output part of the power supply component is disposed in the containment chamber or around a sidewall of the containment chamber. When the portion of the aerosol generating article 100 in the range corresponding to a first direction where the substrate segment 10 is located is inserted into the containment chamber, the electric energy output part transmits electric energy to the heating component in a contact or non-contact manner, and the heating component receives the energy from the outside to generate heat, such that the substrate segment 10 is heated to generate the aerosol.

[0060] In the embodiments of the present disclosure, the first direction does not specifically refer to the direction in which the external outline of the substrate segment 10 is the longest. Specifically, both the direction in which the aerosol generating article 100 is inserted into the containment chamber and the direction in which the aerosol generating article 100 is taken out from the containment chamber are parallel to the first direction. The length of the substrate segment 10 in the first direction may be longer, shorter, or the same as the length in other directions.

[0061] For example, when the external outline of the substrate segment 10 is cylindrical, the first direction is the axial direction of the substrate segment 10. It is to be noted that even if the axial length of the substrate segment 10 is less than the diameter thereof, the first direction of the substrate segment 10 is still the axial direction. For another example, when the outline of the substrate segment 10 is a cuboid, the first direction is still the direction as defined above, that is, the direction in which the aerosol generating article 100 is taken from and placed to the containment chamber, and the first direction of the substrate segment may be any direction of the length, width or height of the cuboid.

[0062] The embodiments of the present disclosure provide an aerosol generating article 100. The aerosol generating article 100 includes a substrate segment 10, a functional segment 20, a cooling segment 30, and a mouthpiece segment 40, which are arranged in a first direction. The substrate segment 10 generates the aerosol when heated, and the mouthpiece segment 40 may be configured to filter and / or cool the aerosol. On one hand, in the embodiments of the present disclosure, by incorporating a functional segment 20 with a draw resistance different from the draw resistance of the substrate segment, it facilitates maintaining the draw resistance of the aerosol generating article 100 within an appropriate range, i.e., ensuring a suitable draw resistance for the aerosol generating article. On the other hand, by controlling the number of functional segments 20 and the number of the cooling segments 30 such that at least one of the number of functional segments 20 or the number of the cooling segments 30 is two, it further facilitates the control for the draw resistance of the aerosol generating article 100 and the temperature of the aerosol, thereby improving the user experience. In addition, the substrate segment 10 is an integral structure. For example, the substrate segment 10 may be formed by extrusion, die casting or injection processes, so as to improve the uniformity of the density of the substrate segment 10 and improve the stability of aerosol release and suction.

[0063] Exemplarily, the substrate segment 10, the functional segment 20, the cooling segment 30, and the mouthpiece segment 40 are separable structures, so that different substrate segments 10, different functional segments 20, different cooling segments 30, and different mouthpiece segments 40 may be reasonably combined to meet different draw resistance and temperature requirements of users, thereby further improving the user experience.

[0064] The specific constituents of the substrate segment 10 are not limited herein. Exemplarily, in an embodiment, the substrate segment 10 may include the plant constituent, the auxiliary constituent, the smoking agent constituent, the adhesive constituent, and flavor constituent, etc.

[0065] The plant constituent is configured to generate the aerosol when heated. The auxiliary constituent is configured to provide skeletal support for the plant constituent. The smoking agent constituent is configured to produce smoke when heated. The adhesive constituent is configured to bind various raw material constituents. The flavor constituent is configured to provide the characteristic aroma. In this way, the plant constituent and the smoking agent constituent may ensure the amount of generated aerosol, while the flavor constituent may improve the release of aroma during smoking, thereby improving the user experience. The auxiliary constituent not only improves the fluidity of the mixture, but also enables the substrate segment 10 to be a porous structure, so as to facilitate the extraction and flow for the aerosol. The adhesive constituent ensures that the plant constituent, the auxiliary constituent, and the like form a stable mixture, and avoids a loose structure.

[0066] For example, the plant constituent may be one or a combination of more of the powders formed by crushing the tobacco leaf raw materials, tobacco leaf fragments, tobacco stems, tobacco dust, fragrant plants, etc. The plant constituent is the core source of the flavor. The endogenous substance in the plant component may provide the physiological satisfaction to users. The endogenous substance, such as alkaloids, enters the human blood, and promote the generation of dopamine by the pituitary gland, thereby obtaining physiological satisfaction.

[0067] For example, the auxiliary constituent may be one or a combination of more of the inorganic filler, the lubricant, and the emulsifier. The inorganic filler includes one or a combination of more of the heavy calcium carbonate, the light calcium carbonate, the zeolite, the attapulgite, the talc powder, and the diatomite. The inorganic filler may provide the skeleton support for the plant component. The inorganic filler also has micropores, which may increase the porosity of the substrate segment 10, such that the aerosol release rate is improved. The lubricant includes one or a combination of more of the candle wax, the carnauba wax, the shellac, the sunflower wax, the rice bran, the beeswax, the stearic acid, and the palmitic acid. The lubricant may increase the fluidity of plant raw material powder, reduce the friction between the plant raw material powder, enable the overall density of the plant raw material powder to be more uniform, also reduce the pressure required for extrusion molding process, and reduce the wear of the die opening. The emulsifier includes one or a combination of more of the polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. The emulsifier may, to some extent, slow down the loss of flavor substances during storage, increase the stability of the flavor substances, and improve the sensory quality of the product.

[0068] For example, the smoking agent may include one or a combination of more of monohydric alcohol (such as menthol), polyol (such as propylene glycol, glycerol, triethylene glycol, 1, 3-butanediol and tetraethylene glycol); ester of polyol (such as glyceryl triacetate, triethyl citrate, glyceryl diacetate mixtures, triethyl citrate, benzyl benzoate, tributyrate); monocarboxylic acid; dicarboxylic acid; polycarboxylic acid (such as lauric acid, myristic acid) or aliphatic ester of polycarboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1, 3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, Triactin, meso-erythritol, glyceryl diacetate mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanilate, glyceryl tributyrate, lauryl acetate).

[0069] For example, the adhesive constituent is in close contact with the interface of the constituent raw material by wetting together with the constituent raw material interface to generate the intermolecular attractive force, thereby bonding to the constituent raw material, such as a powder, a liquid, or the like. The adhesive constituent may be one or a combination of more of natural plant extracts, non-ionized modified viscous polysaccharides including tamarind polysaccharides and guar gum, and modified cellulose (such as carboxymethyl cellulose). The adhesive is configured to bind the particles together, which are not easy to loosen, and the adhesive further improves the water resistance of the substrate segment 10, and is harmless to the human body.

[0070] Exemplarily, the flavor constituent is configured to provide characteristic aroma, such as hay aroma, roasted sweet aroma, solid or liquid substances of nicotine. The flavor constituent may include one or a combination of more of tobacco or other plants, flavored plant extracts, extractum, essential oils, absolute oils. The flavor constituent may include a monomeric flavoring substance, for example, one or a combination of more of macrotrienone, neophytadiene, geraniol, nerol, and the like.

[0071] It is to be noted that the substrate segment 10 is formed with micropores, and the micropores communicate with each other to form the micro-airways communicating with the first airway hole 10a. That is, the micro-airway communicates with the first airway hole 10a, and since the micro-airway is formed by communication between the micropores, the micropores communicate with the passage 10a. In addition, it is to be understood that the case that the micropores communicate with each other may be that: some micropores may communicate with each other and some micropores may not communicate with each other, or all of the micropores communicate with each other. For example, in the embodiments in which the substrate segment 10 is a particle combination, the gaps between the particles form the micropores. The sizes of the micropores are determined by the gaps between the particles.

[0072] The first airway hole 10a and the micro-airway may increase the surface area of substrate segment 10, which may facilitate the heat transfer and improve heating efficiency. The substrate in the substrate segment 10 is heated to release the aerosol, which is collected to the first airway hole 10a through the gaps between the wall materials or the micro-airways. The aerosol released by the atomization substrate exposed to the first airway hole 10a (i.e., the atomization substrate located on the inner wall surface of the first airway hole 10a) may be directly released to the first airway hole 10a. The aerosol between adjacent first airway holes 10a may also be flow through the micro-airway and delivered to the suction end under the action of suction negative pressure.

[0073] For example, in some embodiments, referring to FIG. 7 and FIG. 8, the functional segment 20 may be an integral structure. In an embodiment, the functional segment 20 produced as the integral structure by the extrusion molding process has the function of temperature resistance and preventing thermal collapse in addition to the function of adjusting the draw resistance. Further, the flavor may be loaded according to the style characteristics of the product to enhance the richness of the aerosol. The extrusion molding may refer to a processing method in which the raw material mixture of the functional segment 20 is added into an extruder, the material mixture is pushed forward by a screw under the action of the barrel and the screw of the extruder, and continuously passes through the die at the outlet of the extruder to form the articles or semi-finished articles with various cross-sections.

[0074] In other embodiments, the functional segment 20 may be an integral structure formed by processes such as injection molding and die casting.

[0075] Exemplarily, in some embodiments, the composition of the functional segment 20 is the same as the composition of the substrate segment 10. In this way, during use, the functional segment 20 does not bring undesirable odors, thereby avoiding affecting the taste of the aerosol. In addition, the composition of the functional segment 20 is the same as the composition of the substrate segment 10, which is more beneficial for the functional segment 20 and the substrate segment 10 to be manufactured by the same manufacturing process and raw materials, such that the production efficiency is improved.

[0076] Exemplarily, in some other embodiments, the composition of the functional segment 20 is different from the composition of the substrate segment 10. For example, the functional segment 20 may be produced from different materials such as plant materials, polysaccharides, silica gel, resins, etc.

[0077] The interior of the functional segment 20 is provided with at least one second airway hole 20a, and referring to FIG. 7 to FIG. 8, the second airway hole 20a extends through at least one end of the functional segment 20 in the first direction.

[0078] The case that the interior of the functional segment 20 is provided with at least one second airway hole 20a may indicate that the interior of the functional segment 20 is provided with one second airway hole 20a, or the interior of the functional segment 20 is provided with a plurality of second airway holes 20a.

[0079] In some embodiments, the second airway hole 20a extend through the same end of the functional segment 20 in the first direction, and the other end is closed.

[0080] In some other embodiments, part of the second airway holes 20a extend through one end of the functional segment 20 in the first direction, and other part of the second airway holes 20a extend through the other end of the functional segment 20 in the first direction.

[0081] In some other embodiments, referring to FIG. 7 to FIG. 8, each second airway hole 20a extends through both ends of the functional segment 20 in the first direction. That is, the second airway hole 20a extends along the first direction of the functional segment 20, and the airflow may flow from one end of the functional segment 20 to the other end of the functional segment 20 through the second airway hole 20a. Preferably, the second airway hole 20a is parallel to the central axis of the functional segment 20.

[0082] It is to be noted that the first airway hole 10a and the second airway hole 20a described above are pores in a macroscopic sense, and the micropores are pores in a microscopic sense, and the area of the cross-section of the first airway hole 10a is much greater than the area of the cross-section of the micropores.

[0083] It is to be noted that the draw resistance is positively correlated with the flow resistance of the aerosol, and the lower the flow resistance of the aerosol in the functional segment 20, the lower the draw resistance experienced by the user, and the higher the flow resistance of the aerosol in the functional segment 20, the higher the draw resistance experienced by the user.

[0084] The functional segment 20 adjusts the draw resistance by providing the second airway hole 20a and controlling the design parameter of the second airway hole 20a, for example, by controlling the parameters such as the number of the second airway holes 20a of the functional segment 20, the cross-sectional area (hydraulic diameter) of the second airway hole 20a, and the cross-sectional area of the functional segment 20.

[0085] When the functional segment 20 is provided with a plurality of second airway holes 20a, the aerosol may perform heat exchange with the hole walls of the second airway holes 20a when flowing through the second airway holes 20a, and the temperature of the aerosol may be effectively reduced by using the multi-airway heat exchange.

[0086] It is to be noted that the shape of the second airway hole 20a is not limited herein. For example, on a plane perpendicular to the first direction of the functional segment 20, the cross-sectional shape of the second airway hole 20a is, but is not limited to, at least one of circular (as in FIG. 7 and FIG. 8), oval, track-shaped, elongate-shaped, polygonal or fan-shaped, and the polygonal shape includes a regular or irregular polygon.

[0087] The cross-sectional shape of the second airway hole 20a refers to the cross-sectional shape of the second airway hole 20a taken in a plane perpendicular to the first direction of the functional segment 20.

[0088] Further, the cross-sectional shapes of the second airway holes 20a may be the same. Alternatively, the cross-sectional shapes of at least two second airway holes 20a are different. For example, the cross-sectional shape of at least one second airway hole 20a may be circular, and the cross-sectional shape of at least one second airway hole 20a may be polygonal.

[0089] Exemplarily, the functional segment 20 may be a mesh-like structure, a folded structure, a pleated structure, a solid cellulose acetate structure, or a hollow cellulose acetate structure.

[0090] The functional segment 20 with the mesh-like structure indicates that the size of the functional segment 20 in the first direction is less, and a plurality of second airway holes 20a extend through in the first direction are formed thereon. In this way, on the basis of implementing the adjustment for the draw resistance of the aerosol generating article 100, the size of the functional segment 20 in the first direction may be effectively reduced, such that it facilitates reducing the overall size of the aerosol generating article 100 and enabling the structure to be more compact.

[0091] The specific manner in which the functional segment 20 of the mesh-like structure is formed is not limited herein. For example, it is formed by interweaving a plurality of criss-crossing filamentous structures, and the second airway hole 20a is formed by enclosure of the cross-crossing filamentous structures.

[0092] For another example, the functional segment 20 of the mesh-like structure is in the shape of a thin plate, and the second airway hole 20a extends through the functional segment 20 in the thickness direction of the functional segment 20.

[0093] In some other embodiments, when the functional segment 20 of the mesh-like structure is in the shape of a thin plate, the edge of the functional segment 20 may also be formed with a flange, and the functional segment 20 abuts against the substrate segment 10, the cooling segment 30 or the mouthpiece segment 40 through the flange.

[0094] The specific material of the functional segment 20 of the mesh-like structure is not limited herein. For example, the material may be a metal mesh, a first hollow structure covered with high-permeability paper / film, etc., so that the functional segment 20 may have the ability of temperature resistance. The functional segment 20 is provided with a plurality of second airway holes 20a, and the hole diameter of the second airway hole 20a is less than the hole diameter of the first airway hole 10a, so that the functional segment 20 may adjust the draw resistance of the aerosol generating article 100. Meanwhile, the aerosol may collide with the functional segment 20 for heat exchange, so as to provide the effect of cooling and / or filtration for the aerosol.

[0095] Referring to FIG. 6 and FIG. 11, the functional segment 20 is a folded structure or a pleated structure, and the interior of the folded structure or the pleated structure is provided with an interlayer air passage 20b extending in a first direction. In this way, on the basis of implementing the adjustment for the draw resistance of the aerosol generating article 100, it is possible to lengthen the flow path of the aerosol and the contact area with the functional segment 20. Consequently, it additionally has an effect of preliminarily lowering the temperature of the aerosol. Furthermore, the functional segment 20 of the folded structure or pleated structure also have supporting and filtering abilities.

[0096] It is to be understood that the specific material of the functional segment 20 of the folded structure or the folded structure is not limited herein. For example, polylactic acid (PLA), paper material, or the like may be selected to gather to form the shape, and the porosity is controlled to adjust the draw resistance of the aerosol generating article 100.

[0097] The functional segment 20 of the folded structure may be formed by folding the cellulose acetate paper or the like. The cellulose acetate paper is formed by weaving the cellulose acetate fibers. The cellulose acetate fiber, also known as cellulose acetate or acetate fiber, is a chemically modified polymer compound obtained by esterifying hydroxyl groups of cellulose molecules with acetic acid, and includes diacetate fiber and triacetate fiber, and it has good characteristics of acid and alkali resistance and organic solvent resistance.

[0098] The functional segment 20 of the pleated structure may be formed by gathering the polylactic acid (PLA), paper, or the like to form a curved and wavy interlayer air passage 20b, or an interlayer air passage 20b with the pleats on the surface of the air passage.

[0099] In addition, the functional segment 20 may be supported by a phase change material, and the effect of enhancing the reduction of the aerosol temperature is implemented by using the phase change to absorb heat. The phase change material is, for example, polylactic acid (PLA). The PLA is capable of undergoing phase change and melting to absorb heat when the steam flow of 120°C passes through.

[0100] The functional segment 20 is a tow-type structure, for example, a tow-type structure formed by arranging a plurality of tows side by side and bundling them together.

[0101] For example, referring to FIG. 2, FIG. 4, FIG. 5, FIG. 8, and FIG. 9, the tow-type structure is, for example, a solid cellulose acetate structure. The functional segment 20 of the solid cellulose acetate structure may be a solid structure formed by arranging a plurality of cellulose acetate tows side by side. The gap between the tows of the solid cellulose acetate structure forms an airflow hole, and the aerosol generated by the substrate segment 10 may pass through the solid cellulose acetate structure through the airflow hole.

[0102] Referring to FIG. 3, FIG. 8, and FIG. 9, the tow-type structure is, for example, a hollow cellulose acetate structure. The functional segment 20 of the hollow cellulose acetate structure may be a hollow structure formed by a plurality of acetate tows arranged side by side. The gap between the tows of the hollow cellulose acetate structure forms an airflow hole, and the hollow cellulose acetate structure has a fourth cavity 20c extending through both ends of the hollow cellulose acetate structure along the first direction, and the aerosol generated by the substrate segment 10 may pass through the hollow cellulose acetate structure through the airflow hole and the fourth cavity 20c.

[0103] It is to be understood that the airflow holes formed in the solid cellulose acetate structure and the hollow cellulose acetate structure may be holes in a macroscopic sense, or be holes in the microscopic sense, that is, they cannot be directly recognized by the naked eye.

[0104] For example, referring to FIG. 2 to FIG. 7, the number of cooling segments 30 is two, and one of the two cooling segments 30 is a first cooling segment 31, and the other one of the two cooling segments 30 is a second cooling segment 32. At this case, the number of functional segments 20 may be one or more. When the number of cooling segments 30 is two, the embodiment of the present disclosure is described by taking the number of functional segments 20 being one as an example.

[0105] The structures of the two cooling segments 30 may be the same or may be different.

[0106] By providing two cooling segments 30, the two cooling segments 30 cooperate to facilitate buffering the aerosol and lowering the temperature of the aerosol, and enabling the aerosol to be fully mixed before it enters the mouth. That is, by providing two cooling segments 30, it is easier to meet the design requirements for temperature.

[0107] It is to be understood that the arrangement positions of the two cooling segments 30 and the functional segment 20 are not limited herein. Exemplarily, in some embodiments, referring to FIG. 2 to FIG. 6, the functional segment 20 is located between the first cooling segment 31 and the second cooling segment 32. That is, the aerosol generating article 100 includes a substrate segment 10, a first cooling segment 31, a functional segment 20, a second cooling segment 32, and a mouthpiece segment 40, which are arranged sequentially in a first direction. That is, the aerosol generating article 100 includes a substrate segment 10, a first cooling segment 31, a functional segment 20, a second cooling segment 32, and a mouthpiece segment 40 in the order from the lip-distal end to the lip-proximal end.

[0108] The aerosol generated by heating the substrate segment 10 first flows through the first cooling segment 31 for cooling, then flows through the functional segment 20 for draw resistance adjustment, and then flows through the second cooling segment 32 for further cooling. After the further cooling, the aerosol flows through the mouthpiece segment 40, and the mouthpiece segment 40 may filter out the large particle components and undesirable impurities from the aerosol and / or cool down the aerosol. That is, the aerosol generated by heating the substrate segment 10 passes sequentially through the first cooling segment 31, the functional segment 20, the second cooling segment 32, and the mouthpiece segment 40 for cooling, draw resistance adjustment, further cooling, filtering and / or cooling, and then is inhaled by the user.

[0109] In some other embodiments, referring to FIG. 7, the first cooling segment 31 and the second cooling segment 32 are located between the functional segment 20 and the mouthpiece segment 40. That is, the aerosol generating article 100 includes a substrate segment 10, a functional segment 20, a first cooling segment 31, a second cooling segment 32, and a mouthpiece segment 40, which are arranged sequentially in a first direction. That is, the aerosol generating article 100 includes a substrate segment 10, a functional segment 20, a first cooling segment 31, a second cooling segment 32, and a mouthpiece segment 40 in the order from the lip-distal end to the lip-proximal end.

[0110] In other words, the aerosol generated by heating the substrate segment 10 first flows through the functional segment 20 for draw resistance adjustment, and then flows through the first cooling segment 31 and the second cooling segment 32 for cooling twice. After the twice cooling, the aerosol flows through the mouthpiece segment 40, and the mouthpiece segment 40 may filter out the large particle components and undesirable impurities from the aerosol and / or cool down the aerosol. That is, the aerosol generated by heating the substrate segment 10 passes sequentially through the functional segment 20, the first cooling segment 31, the second cooling segment 32, and the mouthpiece segment 40 for draw resistance adjustment, cooling twice, filtering and / or cooling, and then is inhaled by the user.

[0111] Referring to FIG. 2 to FIG. 7, one of the first cooling segment 31 or the second cooling segment 32 is a first hollow structure, and the other one is a second hollow structure. The first hollow structure has a first cavity 30a extending through both ends of the first hollow structure in the first direction, and the second hollow structure has a second cavity 30b extending through both ends of the second hollow structure in the first direction. In a plane perpendicular to the first direction of the aerosol generating article 100, the area of the cross section of the second cavity 30b is less than the area of the cross section of the first cavity 30a.

[0112] The first hollow structure and the second hollow structure may be configured to buffer the aerosol and lower the temperature of aerosol by providing with the first cavity 30a and the second cavity 30b respectively.

[0113] In a plane perpendicular to the first direction of the aerosol generating article 100, the area of the cross section of the second cavity 30b is less than the area of the cross section of the first cavity 30a. That is, the wall thickness of the second hollow structure is greater than the wall thickness of the first hollow structure, thus the structural strength of the second hollow structure is greater than the structural strength of the first hollow structure. That is, the second hollow structure may enhance the supporting effect while buffering the aerosol and lowering the temperature of the aerosol.

[0114] Exemplarily, referring to FIG. 5 and FIG. 10, the first hollow structure further includes a partition 30c, the partition 30c is disposed within the first cavity 30a and partitions the first cavity 30a into a plurality of sub-cavities. By providing the partition 30c, on one hand, the structural strength of the first hollow structure may be improved, thereby improving the supporting force of the first hollow structure, and preventing the substrate segment 10 from moving during the suction process. On the other hand, by providing the partition 30c to partition the first cavity 30a into a plurality of sub-cavities, a plurality of sub-cavities may be used for heat exchange, thereby improving the cooling effect.

[0115] Specifically, the partition 30c is in a shape of a rib, there are a plurality of partitions 30c, one ends of the plurality of partitions 30c are connected to each other, the other ends are connected to the sidewall of the first cavity 30a, the plurality of partitions 30c are radially distributed at the center of the first cavity 30a, and divide the first cavity 30a into a plurality of sub-cavities.

[0116] For example, referring to FIG. 8 and FIG. 9, the number of functional segments 20 is two, and one of the two functional segments 20 is a first functional segment 2120, and the other one of the two functional segments 20 is a second functional segment 2220. At this case, the number of cooling segments 30 may be one or more. When the number of functional segments 20 is two, the embodiment of the present disclosure is described by taking the number of cooling segments 30 being one as an example.

[0117] The structures of the two functional segments 20 may be the same or may be different.

[0118] By providing two functional segments 20, the two functional segments 20 cooperate to facilitate implementing the adjustment for the draw resistance, thereby facilitating satisfying the design requirements for the draw resistance.

[0119] It is to be understood that the arrangement positions of the two functional segments 20 and the cooling segment 30 are not limited herein. Exemplarily, in some embodiments, referring to FIG. 8, the cooling segment 30 is located between the first functional segment 2120 and the second functional segment 2220. That is, the aerosol generating article 100 includes a substrate segment 10, a first functional segment 2120, a cooling segment 30, a second functional segment 2220, and a mouthpiece segment 40, which are arranged sequentially in a first direction. That is, the aerosol generating article 100 includes a substrate segment 10, a first functional segment 2120, a cooling segment 30, a second functional segment 2220, and a mouthpiece segment 40 in the order from the lip-distal end to the lip-proximal end.

[0120] The aerosol generated by heating the substrate segment 10 first flows through the first functional segment 2120 for draw resistance adjustment, then flows through the cooling segment 30 for cooling, and then flows through the second functional segment 2220 for further draw resistance adjustment. The aerosol after flowing through the second functional segment 2220 flows through the mouthpiece segment 40, and the mouthpiece segment 40 may filter out the large particle components and undesirable impurities from the aerosol and / or cool down the aerosol. That is, the aerosol generated by heating the substrate segment 10 passes sequentially through the first functional segment 2120, the cooling segment 30, the second functional segment 2220, and the mouthpiece segment 40 for draw resistance adjustment, cooling, further draw resistance adjustment, filtering and / or cooling, and then is inhaled by the user.

[0121] In some other embodiments, referring to FIG. 9, the first functional segment 2120 and the second functional segment 2220 are located between the cooling segment 30 and the mouthpiece segment 40. That is, the aerosol generating article 100 includes a substrate segment 10, a cooling segment 30, a first functional segment 2120, a second functional segment 2220, and a mouthpiece segment 40, which are arranged sequentially in a first direction. That is, the aerosol generating article 100 includes a substrate segment 10, a cooling segment 30, a first functional segment 2120, a second functional segment 2220, and a mouthpiece segment 40 in the order from the lip-distal end to the lip-proximal end.

[0122] That is, the aerosol generated by heating the substrate segment 10 first flows through the cooling segment 30 for cooling, and then flows through the first functional segment 2120 and the second functional segment 2220 for draw resistance adjustment twice. The aerosol after flowing through the second functional segment 2220 flows through the mouthpiece segment 40, and the mouthpiece segment 40 may filter out the large particle components and undesirable impurities from the aerosol and / or cool down the aerosol. That is, the aerosol generated by heating the substrate segment 10 passes sequentially through the cooling segment 30, the first functional segment 2120, the second functional segment 2220, and the mouthpiece segment 40 for cooling, draw resistance adjustment, and filtering and / or cooling, and then is inhaled by the user.

[0123] The specific structure of the mouthpiece segment 40 is not limited herein. For example, in an embodiment, see FIG. 2 to FIG. 8, the mouthpiece segment 40 is a filter segment, and may be made of cellulose acetate, polyethylene terephthalate (PET), polysaccharide, propylene fiber and the like. When the solid cellulose acetate structure is formed by arranging a plurality of cellulose acetate tows side by side, the gap between the tows of the solid cellulose acetate structure forms an airflow hole, and during the process of the airflow passing through the airflow hole, since the solid cellulose acetate structure has a greater surface area, it may serve to filter the airflow, thereby filtering impurities wrapped in the airflow, and jointly controls the draw resistance of the aerosol generating article 100 with the functional segment 20, so that the aerosol generating article 100 meets the design requirements and improves the user experience.

[0124] In some another embodiment, referring to FIG. 9, the mouthpiece segment 40 is a third hollow structure 41. The third hollow structure 41 has a third cavity 41a extending through both ends of the third hollow structure 41 along the first direction. The arrangement of the third cavity 41a may lengthen the flow path of the aerosol and has an effect of lowering the temperature of the aerosol.

[0125] The third hollow structure 41 may be, for example, a hollow paper tube, a hollow acetate fiber structure, a corrugated paper tube, or the like.

[0126] Exemplarily, the substrate segment 10, the functional segment 20, the cooling segment 30, and the mouthpiece segment 40 are cylinders and disposed coaxially, and the first direction is the axial direction of the substrate segment 10, the functional segment 20, the cooling segment 30, and the mouthpiece segment 40. By arranging the substrate segment 10, the functional segment 20, the cooling segment 30, and the mouthpiece segment 40 all as cylinders, and arranging them in sequence along the axial direction of the substrate segment 10, the functional segment 20, the cooling segment 30, and the mouthpiece segment 40, the structure of the aerosol generating article 100 may be more compact, and thus the user experience may be improved.

[0127] Eight specific embodiments will be briefly described below with reference to the accompanying drawings.First embodiment

[0128] For example, referring to FIG. 2, in the embodiment, the number of cooling segments 30 is two, and one of the two cooling segments 30 is a first cooling segment 31, and the other one of the two cooling segments 30 is a second cooling segment 32. The number of functional segments 20 is one.

[0129] The aerosol generating article 100 includes a substrate segment 10, a first cooling segment 31, a functional segment 20, a second cooling segment 32, and a mouthpiece segment 40, which are arranged sequentially in a first direction. The substrate segment 10, the first cooling segment 31, the functional segment 20, the second cooling segment 32, and the mouthpiece segment 40 are separable structures. That is, the aerosol generating article 100 is a five-segment combination structure formed by combining sequentially the substrate segment 10, the first cooling segment 31, the functional segment 20, the second cooling segment 32, and the mouthpiece segment 40.

[0130] The functional segment 20 is a tow-type structure, such as the solid cellulose acetate structure. The functional segment 20 of the solid cellulose acetate structure may be a solid structure formed by arranging a plurality of cellulose acetate tows side by side. The gap between the tows of the solid cellulose acetate structure forms an airflow hole, and the aerosol generated by the substrate segment 10 may pass through the solid cellulose acetate structure through the airflow hole, which has the effect of adjusting the draw resistance.

[0131] The first cooling segment 31 is a first hollow structure, and the first hollow structure has the first cavity 30a extending through both ends of the first hollow structure along the first direction, and the first cavity 30a may be configured to buffer the aerosol and reduce the temperature of the aerosol. The first hollow structure is, for example, a hollow paper tube.

[0132] The second cooling segment 32 is a second hollow structure. The second hollow structure has a second cavity 30b extending through both ends of the second hollow structure along the second direction, and the second cavity 30b may be configured to buffer the aerosol and reduce the temperature of the aerosol. The second hollow structure is, for example, a hollow tube.

[0133] In a plane perpendicular to the first direction of the aerosol generating article 100, the area of the cross section of the second cavity 30b is less than the area of the cross section of the first cavity 30a. That is, the wall thickness of the second hollow structure is greater than the wall thickness of the first hollow structure, thus the structural strength of the second hollow structure is greater than the structural strength of the first hollow structure. That is, the second hollow structure may enhance the supporting effect for the aerosol generating article 100 while buffering the aerosol and lowering the temperature of the aerosol. Furthermore, since the area of the cross section of the second cavity 30b is less than the area of the cross section of the first cavity 30a, the airflow flows from a larger space to a smaller space, and the velocity of the aerosol may be increased. That is, the aerosol may be extracted quickly.

[0134] The mouthpiece segment 40 is a filter segment, which may be made of cellulose acetate, polyethylene terephthalate (PET), polysaccharide, propylene fiber and other materials. When the solid cellulose acetate structure is formed by arranging a plurality of cellulose acetate tows side by side, the gap between the tows of the solid cellulose acetate structure forms an airflow hole, and during the process of the airflow passing through the airflow hole, since the solid cellulose acetate structure has a greater surface area, it may serve to filter the airflow, thereby filtering impurities wrapped in the airflow, and jointly adjusts the draw resistance of the aerosol generating article 100 with the functional segment 20, so that the aerosol generating article 100 meets the design requirements and improves the user experience.

[0135] The interior of the substrate segment 10 is provided with at least one first airway hole 10a, and the first airway hole 10a extends through at least one end of the substrate segment 10 in the first direction.

[0136] The substrate segment 10 is an integral structure with the macro and / or micro pores structure and is produced by extrusion, injection molding or die casting processes, and the draw resistance of the substrate segment 10 mainly depends on its own porosity, i.e., the hole diameter and number of the first airway holes 10a. The upper end adopts a four-segment structure design composed of the first cooling segment 31, the functional segment 20, the second cooling segment 32 and the mouthpiece segment 40, which ensures effective cooling and aerosol extraction while incorporating the draw resistance adjustment functionality, such that the draw resistance of the aerosol generation article 100 may meet the design requirements.Second embodiment

[0137] Referring to FIG. 3, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the first embodiment, and the differences mainly include that: in this embodiment, the functional segment 20 is a hollow cellulose acetate structure.

[0138] The functional segment 20 of the hollow cellulose acetate structure may be a hollow structure formed by a plurality of cellulose acetate tows arranged side by side. The gap between the tows of the hollow cellulose acetate structure forms an airflow hole, and the hollow cellulose acetate structure has a fourth cavity 20c extending through both ends of the hollow cellulose acetate structure along the first direction, and the aerosol generated by the substrate segment 10 may pass through the hollow cellulose acetate structure through the airflow hole and the fourth cavity 20c, which serves to adjust the draw resistance.

[0139] In a plane perpendicular to the first direction of the aerosol generating article 100, the area of the cross section of the fourth cavity 20c is less than the area of the cross section of the first cavity 30a. Accordingly, when the airflow enters the fourth cavity 20c from the first cavity 30a, a Venturi effect may be generated, such that the cooling effect on the aerosol may be improved. The Venturi effect is manifested in the phenomenon that the velocity of the fluid increases when the restricted flow passes through the reduced flow area, and its velocity is inversely proportional to the flow area.Third embodiment

[0140] Referring to FIG. 4, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the first embodiment, and the differences mainly include that: in this embodiment, the aerosol generating article 100 includes a substrate segment 10, a second cooling segment 32, a functional segment 20, a first cooling segment 31, and a mouthpiece segment 40 that are arranged sequentially in a first direction. The substrate segment 10, the second cooling segment 32, the functional segment 20, the first cooling segment 31, and the mouthpiece segment 40 may be separable structures. That is, the aerosol generating article 100 is a five-segment combination structure formed by combining sequentially the substrate segment 10, the second cooling segment 32, the functional segment 20, the first cooling segment 31, and the mouthpiece segment 40.Fourth embodiment

[0141] Referring to FIG. 5 and FIG. 10, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the first embodiment, and the differences mainly include that: in this embodiment, the first hollow structure further includes a partition 30c, the partition 30c is disposed in the first cavity 30a and divides the first cavity 30a into a plurality of sub-cavities.

[0142] By providing the partition 30c, on one hand, the structural strength of the first hollow structure may be improved, thereby improving the supporting force of the first hollow structure, and preventing the substrate segment 10 from moving during the suction process. On the other hand, by providing the partition 30c to partition the first cavity 30a into a plurality of sub-cavities, a plurality of sub-cavities may be used for heat exchange, thereby improving the cooling effect.

[0143] Specifically, the partition 30c is in the shape of a rib, and there are a plurality of partitions 30c. One ends of the plurality of partitions 30c are connected to each other, the other ends of the plurality of partitions 30c are connected to the sidewall of the first cavity 30a, the plurality of partitions 30c are radially distributed at the center of the first cavity 30a, and divide the first cavity 30a into a plurality of sub-cavities.Fifth embodiment

[0144] Referring to FIG. 6 and FIG. 11, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the second embodiment, and the differences mainly include that: in this embodiment, the functional segment 20 is a folded structure or a pleated structure, and the interior of the folded structure or the pleated structure is provided with an interlayer air passage 20b extending in a first direction. In this way, on the basis of implementing the adjustment for the draw resistance of the aerosol generating article 100, it is possible to lengthen the flow path of the aerosol and the contact area with the functional segment 20. Consequently, it additionally has an effect of preliminarily lowering the temperature of the aerosol. Furthermore, the functional segment 20 of the folded structure or pleated structure also have supporting and filtering functions.

[0145] It is to be understood that the specific material of the functional segment 20 of the folded structure or the folded structure is not limited herein. For example, polylactic acid (PLA), paper material, or the like may be selected to gather to form the shape, and the porosity is controlled to adjust the draw resistance of the aerosol generating article 100.

[0146] The functional segment 20 of the folded structure may be formed by folding the cellulose acetate paper or the like. The cellulose acetate paper is formed by weaving the cellulose acetate fibers. The cellulose acetate fiber, also known as cellulose acetate or acetate fiber, is a chemically modified polymer compound obtained by esterifying hydroxyl groups of cellulose molecules with acetic acid, and includes diacetate fiber and triacetate fiber, and it has good characteristics of acid and alkali resistance and organic solvent resistance.

[0147] The functional segment 20 of the pleated structure may be formed by gathering the polylactic acid (PLA), paper, or the like to form a curved and wavy interlayer air passage 20b, or an interlayer air passage 20b with the pleats on the surface of the air passage.

[0148] In addition, the functional segment 20 may be supported by a phase change material, and the effect of enhancing the reduction of the aerosol temperature is implemented by using the phase change to absorb heat. The phase change material is, for example, polylactic acid (PLA). The PLA is capable of undergoing phase change and melting to absorb heat when the steam flow of 120°C passes through.Sixth embodiment

[0149] Referring to FIG. 7, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the first embodiment, and the differences mainly include that: in this embodiment, the aerosol generating article 100 includes a substrate segment 10, a functional segment 20, a first cooling segment 31, a second cooling segment 32, and a mouthpiece segment 40 that are arranged sequentially in a first direction. The substrate segment 10, the functional segment 20, the first cooling segment 31, the second cooling segment 32, and the mouthpiece segment 40 may be separable structures. That is, the aerosol generating article 100 is a five-segment combination structure formed by combining sequentially the substrate segment 10, the functional segment 20, the first cooling segment 31, the second cooling segment 32, and the mouthpiece segment 40.

[0150] The functional segment 20 may be an integral structure formed by the extrusion. The functional segment 20 produced as the integral structure by the extrusion molding process has the function of temperature resistance and preventing thermal collapse in addition to the function of adjusting the draw resistance. Further, the flavor may be loaded according to the style characteristics of the product to enhance the richness of the aerosol. The extrusion molding may refer to a processing method in which the raw material mixture of the functional segment 20 is added into an extruder, the material mixture is plasticized by heat and is pushed forward by a screw under the action of the barrel and the screw of the extruder, and continuously passes through the die at the outlet of the extruder, to form the articles or semi-finished articles with various cross-sections.

[0151] Exemplarily, in some embodiments, the composition of the functional segment 20 is the same as the composition of the substrate segment 10. In this way, during use, the functional segment 20 does not bring undesirable odors, thereby avoiding affecting the taste of the aerosol. In addition, the composition of the functional segment 20 is the same as the composition of the substrate segment 10, which is more beneficial for the functional segment 20 and the substrate segment 10 to be manufactured by the same manufacturing process and raw materials, such that the production efficiency is improved.

[0152] In some other embodiments, the composition of the functional segment 20 is different from the composition of the substrate segment 10. For example, the functional segment 20 may be produced from different materials such as plant materials, polysaccharides, silica gel, resins, etc.

[0153] The interior of the functional segment 20 is provided with at least one second airway hole 20a, and the second airway hole 20a extends through at least one end of the functional segment 20 in the first direction.

[0154] The functional segment 20 adjusts the draw resistance by providing with the second airway hole 20a and controlling the design parameter of the second airway hole 20a, for example, by controlling the parameters such as the number of the second airway holes 20a of the functional segment 20, the cross-sectional area (hydraulic diameter) of the second airway hole 20a, and the cross-sectional area of the functional segment 20.

[0155] When the functional segment 20 is provided with a plurality of second airway holes 20a, the aerosol may perform heat exchange with the hole walls of the second airway holes 20a when flowing through the second airway holes 20a, and the temperature of the aerosol may be effectively reduced by using the multi-airway heat exchange.Seventh embodiment

[0156] Referring to FIG. 8, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the first embodiment, and the differences mainly include that: the number of cooling segments 30 is one, the number of functional segments 20 is two, and one of the functional segments 20 is the first functional segment 2120, and the other one of the functional segments 20 is the second functional segment 2220.

[0157] The cooling segment 30 is located between the first functional segment 2120 and the second functional segment 2220. That is, the aerosol generating article 100 includes a substrate segment 10, a first functional segment 2120, a cooling segment 30, a second functional segment 2220, and a mouthpiece segment 40, which are arranged sequentially in a first direction. That is, the aerosol generating article 100 includes a substrate segment 10, a first functional segment 2120, a cooling segment 30, a second functional segment 2220, and a mouthpiece segment 40 in the order from the lip-distal end to the lip-proximal end.

[0158] The cooling segment 30 is a first hollow structure, and the first hollow structure has the first cavity 30a extending through both ends of the first hollow structure along the first direction, and the first cavity 30a may be configured to buffer the aerosol and reduce the temperature of the aerosol. The first hollow structure is, for example, a hollow paper tube.

[0159] The first functional segment 2120 may be an integral structure formed by the extrusion.

[0160] The first functional segment 2120 produced as the integral structure by the extrusion molding process has the function of temperature resistance and preventing thermal collapse in addition to the function of adjusting the draw resistance. Further, the flavor may be loaded according to the style characteristics of the product to enhance the richness of the aerosol. The extrusion molding may refer to a processing method in which the raw material mixture constituting the first functional segment 2120 is added into an extruder, the material mixture is plasticized by heat and is pushed forward by a screw under the action of the barrel and the screw of the extruder, and continuously passes through the die at the outlet of the extruder, to form the articles or semi-finished articles with various cross-sections.

[0161] The interior of the first functional segment 2120 is provided with at least one second airway hole 20a, and the second airway hole 20a extends through at least one end of the functional segment 20 in the first direction.

[0162] The second functional segment 2220 is a hollow cellulose acetate structure.

[0163] The second functional segment 2220 of the hollow cellulose acetate structure may be a hollow structure formed by a plurality of cellulose acetate tows arranged side by side. The gap between the tows of the hollow cellulose acetate structure forms an airflow hole, and the hollow cellulose acetate structure has a fourth cavity 20c extending through both ends of the hollow cellulose acetate structure along the first direction, and the aerosol generated by the substrate segment 10 may pass through the hollow cellulose acetate structure through the airflow hole and the fourth cavity 20c, which serves to adjust the draw resistance.

[0164] In a plane perpendicular to the first direction of the aerosol generating article 100, the area of the cross section of the fourth cavity 20c is less than the area of the cross section of the first cavity 30a. Accordingly, when the airflow enters the fourth cavity 20c from the first cavity 30a, a Venturi effect may be generated, such that the cooling effect on the aerosol may be improved. The Venturi effect is manifested in the phenomenon that the velocity of the fluid increases when the restricted flow passes through the reduced flow area, and its velocity is inversely proportional to the flow area.Eighth embodiment

[0165] Referring to FIG. 9, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the seventh embodiment, and the differences mainly include followings.

[0166] The first functional segment 2120 and the second functional segment 2220 are located between the cooling segment 30 and the mouthpiece segment 40. That is, the aerosol generating article 100 includes a substrate segment 10, a cooling segment 30, a first functional segment 2120, a second functional segment 2220, and a mouthpiece segment 40, which are arranged sequentially in a first direction. That is, the aerosol generating article 100 includes a substrate segment 10, a cooling segment 30, a first functional segment 2120, a second functional segment 2220, and a mouthpiece segment 40 in the order from the lip-distal end to the lip-proximal end.

[0167] The first functional segment 2120 is a hollow cellulose acetate structure.

[0168] The first functional segment 2120 of the hollow cellulose acetate structure may be a hollow structure formed by a plurality of cellulose acetate tows arranged side by side. The gap between the tows of the hollow cellulose acetate structure forms an airflow hole, and the hollow cellulose acetate structure has a fourth cavity 20c extending through both ends of the hollow cellulose acetate structure along the first direction, and the aerosol generated by the substrate segment 10 may pass through the hollow cellulose acetate structure through the air flow hole and the fourth cavity 20c, which serves to adjust the draw resistance.

[0169] In a plane perpendicular to the first direction of the aerosol generating article 100, the area of the cross section of the fourth cavity 20c is less than the area of the cross section of the first cavity 30a. Accordingly, when the airflow enters the fourth cavity 20c from the first cavity 30a, a Venturi effect may be generated, such that the cooling effect on the aerosol may be improved. The Venturi effect is manifested in the phenomenon that the velocity of the fluid increases when the restricted flow passes through the reduced flow area, and its velocity is inversely proportional to the flow area.

[0170] The second functional segment 2220 is a tow-type structure, such as a solid cellulose acetate structure.

[0171] The gap between the tows of the solid cellulose acetate structure forms an airflow hole, and during the process of the airflow passing through the airflow hole, since the solid cellulose acetate structure has a greater surface area, it may serve to filter the airflow, thereby filtering impurities wrapped in the airflow, and jointly adjusts the draw resistance of the aerosol generating article 100 with the functional segment 20, so that the aerosol generating article 100 meets the design requirements and improves the user experience.

[0172] The mouthpiece segment 40 is a third hollow structure 41. The third hollow structure 41 has a third cavity 41a extending through both ends of the third hollow structure 41 along the first direction. The arrangement of the third cavity 41a may lengthen the flow path of the aerosol and has an effect of lowering the temperature of the aerosol.

[0173] The third hollow structure 41 may be, for example, a hollow paper tube, a hollow acetate fiber structure, a corrugated paper tube, or the like.

[0174] In the description of the present disclosure, the description for the reference expressions "in an embodiment", "in some embodiments", "in some other embodiments", "in yet some embodiments", "for example", or the like refers to that specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present disclosure, the illustrative description for the above expressions do not necessarily refer to the same embodiment or example. Further, the described specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples. Further, those skilled in the art may combine different embodiments or examples described in the present disclosure and features of different embodiments or examples without conflicting.

[0175] The above descriptions are merely preferred embodiments of the present disclosure, and are not intended to limit the present disclosure, and various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement and improvement made within the spirit and scope of the present disclosure all fall within the protection scope of the present disclosure.

Examples

first embodiment

[0128]For example, referring to FIG. 2, in the embodiment, the number of cooling segments 30 is two, and one of the two cooling segments 30 is a first cooling segment 31, and the other one of the two cooling segments 30 is a second cooling segment 32. The number of functional segments 20 is one.

[0129]The aerosol generating article 100 includes a substrate segment 10, a first cooling segment 31, a functional segment 20, a second cooling segment 32, and a mouthpiece segment 40, which are arranged sequentially in a first direction. The substrate segment 10, the first cooling segment 31, the functional segment 20, the second cooling segment 32, and the mouthpiece segment 40 are separable structures. That is, the aerosol generating article 100 is a five-segment combination structure formed by combining sequentially the substrate segment 10, the first cooling segment 31, the functional segment 20, the second cooling segment 32, and the mouthpiece segment 40.

[0130]The functional segment 20...

second embodiment

[0137]Referring to FIG. 3, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the first embodiment, and the differences mainly include that: in this embodiment, the functional segment 20 is a hollow cellulose acetate structure.

[0138]The functional segment 20 of the hollow cellulose acetate structure may be a hollow structure formed by a plurality of cellulose acetate tows arranged side by side. The gap between the tows of the hollow cellulose acetate structure forms an airflow hole, and the hollow cellulose acetate structure has a fourth cavity 20c extending through both ends of the hollow cellulose acetate structure along the first direction, and the aerosol generated by the substrate segment 10 may pass through the hollow cellulose acetate structure through the airflow hole and the fourth cavity 20c, which serves to adjust the draw resistance.

[0139]In a plane perpendicular to the first direction of the aerosol generating ar...

third embodiment

[0140]Referring to FIG. 4, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as that of the first embodiment, and the differences mainly include that: in this embodiment, the aerosol generating article 100 includes a substrate segment 10, a second cooling segment 32, a functional segment 20, a first cooling segment 31, and a mouthpiece segment 40 that are arranged sequentially in a first direction. The substrate segment 10, the second cooling segment 32, the functional segment 20, the first cooling segment 31, and the mouthpiece segment 40 may be separable structures. That is, the aerosol generating article 100 is a five-segment combination structure formed by combining sequentially the substrate segment 10, the second cooling segment 32, the functional segment 20, the first cooling segment 31, and the mouthpiece segment 40.

Claims

1. An aerosol generating article, comprising a substrate segment, a functional segment, a cooling segment, and a mouthpiece segment that are arranged in a first direction; wherein a draw resistance of the functional segment is different from a draw resistance of the substrate segment, and the mouthpiece segment is configured to filter and / or cool an aerosol; at least one of a number of functional segments or a number of cooling segments is two, and both the functional segment and the cooling segment are located between the substrate segment and the mouthpiece segment; the substrate segment is an integral structure, at least one first airway hole is provided within an interior of the substrate segment, and the at least one first airway hole extends through at least one end of the substrate segment along a first direction.

2. The aerosol generating article of claim 1, wherein there are two cooling segments, one of the two cooling segments is a first cooling segment and the other one of the two cooling segments is a second cooling segment.

3. The aerosol generating article of claim 2, wherein the functional segment is located between the first cooling segment and the second cooling segment; or the first cooling segment and the second cooling segment are located between the functional segment and the mouthpiece segment.

4. The aerosol generating article of claim 3, wherein one of the first cooling segment or the second cooling segment is a first hollow structure, the other one of the first cooling segment or the second cooling segment is a second hollow structure; the first hollow structure is provided with a first cavity extending through both ends of the first hollow structure in the first direction, and the second hollow structure is provided with a second cavity extending through both ends of the second hollow structure in the first direction, and in a plane perpendicular to the first direction of the aerosol generating article, an area of a cross section of the second cavity is less than an area of a cross section of the first cavity.

5. The aerosol generating article of claim 4, the first hollow structure further comprises a partition, the partition is disposed within the first cavity and partitions the first cavity into a plurality of sub-cavities.

6. The aerosol generating article of claim 1, wherein there are two functional segments, one of the two functional segments is a first functional segment and the other one of the two functional segments is a second functional segment.

7. The aerosol generating article of claim 6, wherein the cooling segment is located between the first functional segment and the second functional segment; or the first functional segment and the second functional segment are located between the cooling segment and the mouthpiece segment.

8. The aerosol generating article of claim 1, wherein the functional segment is a mesh-like structure, a folded structure, a pleated structure, or a tow-like structure.

9. The aerosol generating article of claim 1, wherein the substrate segment, the functional segment, the cooling segment, and the mouthpiece segment are separable structures, and the functional segment is an integral structure.

10. The aerosol generating article of claim 9, wherein at least one second airway hole is provided in an interior of the functional segment, and the at least one second airway hole extends through at least one end of the functional segment in the first direction.

11. The aerosol generating article of claim 1, wherein the mouthpiece segment is a filter segment; or the mouthpiece segment is a third hollow structure, and the third hollow structure is provided with a third cavity extending through both ends of the third hollow structure in the first direction.

12. The aerosol generating article of claim 1, wherein the substrate segment, the functional segment, the cooling segment, and the mouthpiece segment are cylindrical and disposed coaxially, and the first direction is an axial direction of the substrate segment, the functional segment, the cooling segment, and the mouthpiece segment.

13. An aerosol generating system, comprising an aerosol generating device and the aerosol generating article of any one of claims 1 to 12, wherein the aerosol generating device comprises a heating element for heating the substrate segment to generate an aerosol.

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