Aerosol generating substrate and aerosol generating article

Abstract

Provided are an aerosol generating substrate (10) and an aerosol generating article. The aerosol generating substrate (10) includes at least two skeletons in a straight-plate shape, and all of the skeletons (11) collectively form an integral structure having an airway (10a); the airway (10a) extends from one end to an opposite end of the aerosol generating substrate (11) in a first direction, and the airway (10a) at least includes a first airway (10a1) located in an exterior of the aerosol generating substrate (10).

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a continuation of International Patent Application No. PCT / CN2024 / 120309, filed on September 23, 2024, which is based on and claims priority to Chinese Patent Application No. 202311363277.6, filed on October 19, 2023, which are incorporated by reference in their entireties.TECHNICAL FIELD

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

[0003] An aerosol generating article typically generates an aerosol in a heat-not-burn manner. Specifically, an aerosol generating substrate is provided in the aerosol generating article, and the aerosol generating substrate is heated by an external heat source, such as a heating component on an aerosol generating device, so that the aerosol generating substrate is heated to a degree just enough to release a fragrance. The aerosol generating substrate does not burn, but is loaded with an atomization agent. During the usage, the atomization agent is released by heating, to form a smoke.

[0004] In related technologies, there are three types of aerosol generating substrates: granular type, traditional tobacco type, and flake type. Such aerosol generating substrates have characteristics of a relatively low efficiency in aerosol extraction and a relatively poor inhalation experience feeling.SUMMARY

[0005] In view of the above, the embodiments of the present disclosure are expected to provide an aerosol generating substrate and an aerosol generating article capable of improving the inhalation experience feeling.

[0006] In order to achieve the above objectives, an embodiment of the present disclosure provides an aerosol generating substrate. The aerosol generating substrate includes at least two skeletons in a straight-plate shape, and all of the skeletons collectively form an integral structure having an airway.

[0007] Herein, the airway extends from one end to an opposite end of the aerosol generating substrate in a first direction, and the airway at least comprises a first airway located in an exterior of the aerosol generating substrate.

[0008] In one embodiment, the airway further includes a second airway located in an interior of the aerosol generating substrate.

[0009] In one embodiment, a cross-sectional shape of the first airway is a portion of a cross-sectional shape of the second airway.

[0010] In one embodiment, outer edges of a cross section of the aerosol generating substrate perpendicular to the first direction are located on a circumference of the same circle, ellipse or waist circle.

[0011] In one embodiment, the airway further includes a plurality of second airways located in an interior of the aerosol generating substrate, and a cross-sectional shape of each of the second airways is square or rhombic.

[0012] In one embodiment, the outer edges of the cross section of the aerosol generating substrate perpendicular to the first direction are located on the circumference of the same circle; and the cross-sectional shape of the second airways is square, and a sum of surface areas of side walls of all of the first airways accounts for 0.5% to 30% of a sum of surface areas of side walls of all of the airways.

[0013] In one embodiment, the outer edges of the cross section of the aerosol generating substrate perpendicular to the first direction are located on the circumference of the same circle; and the cross-sectional shape of the second airways is rhombic, and a sum of surface areas of side walls of all of the first airways accounts for 0.5% to 50% of a sum of surface areas of side walls of all of the airways.

[0014] In one embodiment, the outer edges of the cross section of the aerosol generating substrate perpendicular to the first direction are located on the circumference of the same waist circle; and the cross-sectional shape of each of the second airways is square, and a sum of surface areas of side walls of all of the first airways accounts for 0.5% to 40% of a sum of surface areas of side walls of all of the airways.

[0015] In one embodiment, the outer edges of the cross section of the aerosol generating substrate perpendicular to the first direction are located on the circumference of the same waist circle; and the cross-sectional shape of each of the second airways is rhombic, and a sum of surface areas of side walls of all of the first airways accounts for 0.5% to 60% of a sum of surface areas of side walls of all of the airways.

[0016] In one embodiment, the skeletons are combined to form a skeleton structure having a first outer surface, a second outer surface, and a third outer surface; the first outer surface and the second outer surface are respectively located at two opposite ends of the skeleton structure in the first direction, and the third outer surface is located between the first outer surface and the second outer surface.

[0017] The third outer surface has a first region and a second region, the aerosol generating substrate further includes an outer skin, the outer skin covers the first region, and each of the first airways is located in the second region.

[0018] In one embodiment, the first region and the second region extend from the first outer surface to the second outer surface, respectively.

[0019] In one embodiment, the first region is located on a side of the second region in the first direction.

[0020] In one embodiment, the skeletons are combined to form a skeleton structure having a first outer surface, a second outer surface, and a third outer surface; the first outer surface and the second outer surface are respectively located at two opposite ends of the skeleton structure in the first direction, the third outer surface is located between the first outer surface and the second outer surface, and the third outer surface is exposed.

[0021] In one embodiment, the airway further includes a plurality of second airways located in the interior of the aerosol generating substrate, and a sum of surface areas of side walls of all of the first airways accounts for 0.5% to 15% of a sum of surface areas of side walls of all of the airways.

[0022] In one embodiment, a shape of a cross section of the aerosol generating substrate perpendicular to the first direction is a radiation shape that expands from a center toward a periphery, each of the skeletons configures the radiation shape, and the first airway is formed between two adjacent skeletons.

[0023] In one embodiment, the airway further includes a second airway located in an interior of the aerosol generating substrate, and a sum of surface areas of side walls of all of the first airways is greater than or equal to 50% and less than 90% of a sum of surface areas of side walls of all of the airways.

[0024] In one embodiment, the skeletons include a plurality of first skeletons and a plurality of second skeletons, the plurality of first skeletons define a skeleton main body having a hollow space inside; one end of each of the second skeletons in a second direction is located in the hollow space, and another end of each of the second skeletons in the second direction is located in an exterior of the skeleton main body; wherein the second direction is perpendicular to the first direction.

[0025] Each of the second skeletons partitions the second airway in the hollow space, and the first airway is formed between two adjacent second skeletons located in the exterior of the skeleton main body.

[0026] In one embodiment, the number of the first skeletons is four, the number of the second skeletons is four, a shape of a cross section of the skeleton main body perpendicular to the first direction is a square shape; the one end of each of the second skeletons located in the hollow space is connected, and each of the second skeletons extends to the exterior of the skeleton main body from a position of the skeleton main body corresponding to a respective corner of the square shape.

[0027] In one embodiment, the sum of the surface areas of the side walls of all of the first airways is greater than or equal to 30% and less than 90% of the sum of the surface areas of the side walls of all of the airways.

[0028] In one embodiment, the aerosol generating substrate has a centrally symmetrical structure with respect to a centerline extending in the first direction.

[0029] In one embodiment, the aerosol generating substrate has an axially symmetrical structure with respect to an axis perpendicular to the first direction.

[0030] In one embodiment, the aerosol generating substrate has a columnar shape, and the first direction is an elongation direction of the aerosol generating substrate.

[0031] Another embodiment of the present disclosure provides an aerosol generating article. The aerosol generating article includes the aerosol generating substrate described above.

[0032] Another embodiment of the present disclosure provides an aerosol generating article, which includes an outer wrapping layer and the aforementioned aerosol generating substrate. The aerosol generating substrate has a first end and a second end in the first direction, and the outer wrapping layer wraps an outer peripheral side between the first end and the second end of the aerosol generating substrate.

[0033] In one embodiment, the aerosol generating article further includes a functional segment and the functional segment is disposed at one end of the aerosol generating substrate in the first direction. The functional segment at least includes a filtering segment for filtering an aerosol; and the outer wrapping layer further wraps an outer surface of the functional segment.

[0034] In one embodiment, the functional segment further includes a cooling segment, and the cooling segment is located between the filtering segment and the aerosol generating substrate.

[0035] In one embodiment, the functional segment further includes a supporting segment, and the supporting segment is located between the filtering segment and the aerosol generating substrate.

[0036] In one embodiment, the functional segment further includes an inhalation resistance adjustment segment, and an inhalation resistance of the inhalation resistance adjustment segment is different from an inhalation resistance of the aerosol generating substrate. The inhalation resistance adjustment segment is located between the filtering segment and the aerosol generating substrate.

[0037] In one embodiment, the functional segment further includes an inhalation resistance adjustment segment, and an inhalation resistance of the inhalation resistance adjustment segment is different from an inhalation resistance of the aerosol generating substrate. The inhalation resistance adjustment segment is located on a side of the filtering segment facing away from the aerosol generating substrate.

[0038] The embodiments of the present disclosure provide the aerosol generating substrate and the aerosol generating article, where the aerosol generating substrate includes at least two skeletons in the straight-plate shape, and all of the skeletons collectively form the integral structure with the airway. Herein, the airway extends from the one end to the opposite other end of the aerosol generating substrate in the first direction, and the airway at least includes the first airway located in the exterior of the aerosol generating substrate. The first airway can prolong the airflow path and increase the flow speed of the airflow in the aerosol generating substrate, thereby enhancing the impact force of the airflow, which can enable the aerosol to be uniformly mixed. At the same time, by combining the at least two skeletons having the straight-plate shape to form the first airway, the side wall of the first airway can have a relatively large surface area, and the airflow in the first airway can be sufficiently in contact with the side wall of the first airway. As such, the heat exchange capacity between the airflow in the first airway and the aerosol generating substrate can be improved, and the extraction efficiency and uniformity of the aerosol in the aerosol generating substrate can be further improved. By adopting the aerosol generating substrate of the embodiments of the present disclosure, the inhalation experience feeling of the user can be better improved.BRIEF DESCRIPTION OF THE DRAWINGS

[0039] FIG. 1 is a schematic structural diagram of a first aerosol generating substrate according to an embodiment of the present disclosure.

[0040] FIG. 2 is a schematic diagram of a cross section of the aerosol generating substrate shown in FIG. 1 perpendicular to a first direction.

[0041] FIG. 3 is a schematic structural diagram of a second aerosol generating substrate according to an embodiment of the present disclosure.

[0042] FIG. 4 is a schematic structural diagram of a third aerosol generating substrate according to an embodiment of the present disclosure.

[0043] FIG. 5 is a schematic diagram of a cross section of the aerosol generating substrate shown in FIG. 4 perpendicular to the first direction.

[0044] FIG. 6 is a schematic structural diagram of a fourth aerosol generating substrate according to an embodiment of the present disclosure.

[0045] FIG. 7 is a schematic structural diagram of a fifth aerosol generating substrate according to an embodiment of the present disclosure.

[0046] FIG. 8 is a schematic structural diagram of a sixth aerosol generating substrate according to an embodiment of the present disclosure.

[0047] FIG. 9 is a schematic structural diagram of a seventh aerosol generating substrate according to an embodiment of the present disclosure.

[0048] FIG. 10 is a schematic structural diagram of an eighth aerosol generating substrate according to an embodiment of the present disclosure.

[0049] FIG. 11 is a schematic structural diagram of a ninth aerosol generating substrate according to an embodiment of the present disclosure.

[0050] FIG. 12 is a schematic structural diagram of a tenth aerosol generating substrate according to an embodiment of the present disclosure.

[0051] FIG. 13 is a schematic structural diagram of a first aerosol generating article according to an embodiment of the present disclosure.

[0052] FIG. 14 is a cross-sectional diagram of the aerosol generating article shown in FIG. 13.

[0053] FIG. 15 is a cross-sectional diagram of a second aerosol generating article according to an embodiment of the present disclosure.

[0054] FIG. 16 is a cross-sectional diagram of a third aerosol generating article according to an embodiment of the present disclosure.

[0055] FIG. 17 is a cross-sectional diagram of a fourth aerosol generating article according to an embodiment of the present disclosure.DETAILED DESCRIPTION

[0056] In the description of the embodiments of the present disclosure, it should be noted that the orientation or positional relationship indicated by the term such as “first direction” is based on the orientation or positional relationship shown in FIG. 1. Such orientation terms are only for the convenience of describing the embodiments of the present disclosure and to simplify the description, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the embodiments of the present disclosure.

[0057] The embodiments of the present disclosure provide an aerosol generating article. Referring to FIGS. 1 to 17, the aerosol generating article includes an aerosol generating substrate 10.

[0058] The aerosol generating substrate 10 includes at least two skeletons 11 in a straight-plate shape, and all of the skeletons 11 collectively form an integral structure having an airway 10a. Herein, the airway 10a extends from one end to an opposite end of the aerosol generating substrate 10 in a first direction, and the airway 10a at least includes a first airway 10a1 located in an exterior of the aerosol generating substrate 10.

[0059] The aerosol generating article may be configured to be used in conjunction with an aerosol generating device that includes a heating component. Specifically, the heating component heats and atomizes the aerosol generating substrate 10 to generate the aerosol, for inhalation by the user or for use in medicine, cosmetics, etc.

[0060] The heating component has many heating manners. Exemplarily, the heating manners include a center heating manner and a peripheral heating manner. The center heating manner refers to a manner of inserting the heating component to the interior of the aerosol generating article, to bake and heat the aerosol generating article from the inside to the outside. The peripheral heating manner refers to a manner of setting the heating component on the periphery of the aerosol generating article, to bake and heat the aerosol generating article from the outside to the inside. Specifically, such heating manners can be applied by resistance heating, electromagnetic heating, infrared heating, microwave heating, laser heating, etc.

[0061] The specific structure of the aerosol generating substrate 10 is not limited herein. Exemplarily, in one embodiment, the aerosol generating substrate 10 may be made of an atomization medium per se, and for example, may be made of an aerosol generating fragrant medium. In some other embodiments, the aerosol generating substrate 10 may include a substrate body and an atomization medium disposed on the substrate body, and the substrate body may be, for example, a high-temperature resistant carbon fiber. Thus, through the arrangement of the substrate body, the strength of the aerosol generating substrate 10 can be enhanced, and the high temperature to a certain degree may be borne without generating peculiar smell.

[0062] The specific ingredient of the aerosol generating substrate 10 is not limited herein. Exemplarily, in one embodiment, the aerosol generating substrate 10 may include a plant ingredient, an auxiliary ingredient, a smoke-generating agent ingredient, a binder ingredient, etc.

[0063] In one embodiment, the plant ingredient is one or a combination of several types of powder formed by performing crushing treatment on tobacco raw materials, tobacco fragments, tobacco stems, tobacco powder, fragrant plants, etc. The plant ingredient is the core source of the fragrance of the article. Endogenous substances in the plant ingredient, such as nicotine, enter the human bloodstream through atomization, which promotes the pituitary gland to produce dopamine, thus achieving physiological satisfaction.

[0064] In one embodiment, the auxiliary ingredient may be one or a combination of several materials of an inorganic filler, a lubricating agent and an emulsifying agent. Herein, the inorganic filler includes one or a combination of several materials of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talcum powder and diatomite. The inorganic filler may provide a skeleton supporting effect for the plant ingredient, at the same time, the inorganic filler also has micro holes, and the wall material porosity after the plant ingredient is formed can be enhanced, so that the aerosol release rate can be improved.

[0065] The lubricating agent includes one or a combination of several materials of candelilla wax, Brazil wax, shell-lac, helianthus annuus wax, rice bran, beeswax, stearic acid and palmic acid. The lubricating agent may increase the fluidity of granules, decrease the friction among the granules, enable the integral granule distribution density to be uniform, reduce the pressure required for mold forming, and reduce the mold abrasion.

[0066] The emulsifying agent includes one or a combination of several materials of polyglycerol fatty acid ester, Tween-80 and polyvinyl alcohol. The emulsifying agent may slow down the loss of a fragrant substance during the storage process to a certain degree, enhance the stability of the fragrant substance, and improve the sensory quality of the article. The emulsifying agent (also referred to as a surfactant) can reduce the interfacial tension between water-soluble and water-insoluble components in the mixed system, and further form a robust film on a droplet surface or form a double electric layer on the droplet surface due to the charge(s) given by the emulsifier, which can prevent the droplet coalescence and maintain a uniform emulsion. Emulsification and homogenization of two immiscible components can improve the consistency of article quality.

[0067] The smoke-generating agent ingredient has a function of generating a great amount of steam when being heated, so that the aerosol volume of the smoke generating article can be improved. In one embodiment, the smoke-generating agent may include one or a combination of several materials of monohydric alcohol (such as menthol); polyhydric alcohol (such as propylene glycol, triethylene glycol, 1,3-butanediol, and glycerol); ester of polyhydric alcohol (such as gylcerol monoacetate, diacetin, or glyceryl triacetate); monocarboxylic acid; and polybasic carboxylic acid (such as lauric acid, and myristic acid) or aliphatic ester of polybasic carboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, Triactin, meso-erythritol, a diacetin mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, glycerin tributyrate, and lauryl acetate).

[0068] In one embodiment, the binder ingredient is extracted from natural plants, and is non-ionized modified viscous polysaccharide including one or a combination of several materials of tamarind polysaccharide, Pullulan, algal polysaccharide, locust bean gum, guar gum, and xyloglucan. The binder is in close contact with the interface of the ingredient material of the article by wetting, resulting in intermolecular attraction, thereby playing the role of binding the powder, liquid, etc. of the ingredient material. At the same time, the natural plants may be selected. In addition, the extraction and non-ionization of the binder can prevent the release of harmful substances such as methanol, formaldehyde, and acrolein caused by colloid modification, which can improve the safety of articles.

[0069] With continued reference to FIGS. 1 to 12, the aerosol generating substrate 10 is an integral structure. Exemplarily, the aerosol generating substrate 10 may be a particulate conjugate, which is a recombined tobacco medium, for example, a recombined tobacco medium containing ingredients such as a smoke-generating agent, a tobacco, and the like.

[0070] The aerosol generating substrate 10 may be formed into an integral structure by a process such as injection molding, compression molding, extrusion, casting, and rolling. Here, the extrusion process refers to a processing method where the raw material mixture is added into an extruder, the material is pushed forward by the screw through the action between the extruder barrel and the screw, and continuously passes through the die head to form articles or semi-finished articles of various cross sections.

[0071] Since the aerosol generating substrate10 remains the integral structure whether subjected to heat inhalation or after heat cessation, and the phenomenon of disintegration and falling is not easy to occur. This addresses issues presented in the existing flake-like, filamentous or loose-particle aerosol generating substrate such as flake detachment, filamentous or particle components falling off, and difficulty in cleaning.

[0072] Referring to FIGS. 1 to 12, the aerosol generating substrate 10 may be mainly formed by combining skeletons 11, and there may be two or more skeletons 11.

[0073] The skeleton 11 has a straight-plate shape, that is, two opposite outer surfaces of the skeleton 11 in the thickness direction of the skeleton 11 are both planar.

[0074] Among all of the skeletons 11, at least some of the skeletons 11 may intersect. That is, some of the skeletons 11 may intersect; some of the skeletons 11 may be parallel; or all of the skeletons 11 may intersect.

[0075] The airway 10a is the passage through which an external airflow and an aerosol pass. Specifically, during the heating process of the aerosol generating substrate 10, the external airflow and the aerosol released by heating the aerosol generating substrate 10 may enter the airway 10a; and the airflow entering the airway 10a may be mixed with the aerosol, and further flow out of the airway 10a with the aerosol.

[0076] The first direction may be any direction of the aerosol generating substrate 10. For example, referring to FIG. 1, the first direction may be a height direction of the aerosol generating substrate 10. In some other embodiments, the first direction may be a length direction or a width direction of the aerosol generating substrate 10 (where the height direction, the length direction, and the width direction are perpendicular to each other). The first direction may be inclined with respect to at least two of the length direction, the width direction, and the height direction of the aerosol generating substrate 10.

[0077] Exemplarily, referring to FIG. 1, the aerosol generating substrate 10 may have a columnar shape, and the first direction may be an elongation direction (i.e., a height direction) of the aerosol generating substrate 10.

[0078] The shape of the cross section of the aerosol generating substrate 10 perpendicular to the first direction is not limited. Exemplarily, referring to FIGS. 1 and 2, the outer edges of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may be located on the circumference of the same circle (i.e., the dashed circle C1 shown in FIG. 2). The outer edges of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may refer to the point(s) or line(s) at the outermost side of the cross section. Such point(s) or line(s) may be located on the circumference of the same circle, which is regarded to be corresponding to the shape of the cross section of the aerosol generating substrate 10 perpendicular to the first direction to be the substantially circular.

[0079] Exemplarily, referring to FIGS. 4 and 5, the outer edges of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may also be located on the circumference of the same waist circle (i.e., the dashed waist circle C2 shown in FIG. 5). The waist circle refers to a closed shape formed by bisecting a circle into two semicircular arcs through the center of the circle and translating in opposite directions to each other, and connecting the endpoints of the two semicircular arcs with two parallel lines of the equal length. In other words, the shape of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may be substantially waist circular. The substantially waist-circular cross section of the aerosol generating substrate 10 perpendicular to the first direction may facilitate manufacture and storage, and may also provide a relatively large atomization surface area in a relatively small space.

[0080] Exemplarily, the outer edges of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may also be located on the circumference of the same ellipse. In other words, the shape of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may be substantially elliptical.

[0081] The aerosol generating substrate 10 may have a symmetrical structure. For example, the aerosol generating substrate 10 may have a centrally symmetrical structure with respect to a centerline extending in the first direction, or may have an axially symmetrical structure with respect to an axis perpendicular to the first direction.

[0082] The aerosol generating substrate 10 may have an asymmetrical structure. For example, the shape of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may have the asymmetrical structure, or all of the airways 10a on the aerosol generating substrate 10 may be asymmetrically distributed.

[0083] The first airway 10a1 may be located in the exterior of the aerosol generating substrate 10. In other words, the first airway 10a1 is located on the outer surface of the aerosol generating substrate 10, and the cross section of the first airway 10a1 has a non-closed shape.

[0084] There may be one or multiple first airways 10a1.

[0085] The first airway 10a1 is configured by the skeletons 11. The side wall of the first airway 10a1 may be constituted by at least a portion of the outer surface on one side of the first airway 10a1, in its thickness direction, on which the first airway 10a1 is configured.

[0086] The first airway 10a1 can prolong the airflow path and increase the flow speed of the airflow in the aerosol generating substrate 10, thereby enhancing the impact force of the airflow, which can enable the aerosol to be uniformly mixed. At the same time, by combining the at least two skeletons 11 having the straight-plate shape to form the first airway(s) 10a1, the side wall of the first airway 10a1 can have a relatively large surface area, and the airflow in the first airway 10a1 can be sufficiently in contact with the side wall of the first airway 10a1. As such, the heat exchange capacity between the airflow in the first airway 10a1 and the aerosol generating substrate 10 can be improved, and the extraction efficiency and uniformity of the aerosol in the aerosol generating substrate 10 can be further improved. By adopting the aerosol generating substrate 10 in the embodiments of the present disclosure, the inhalation experience feeling of the user can be better improved.

[0087] In one embodiment, referring to FIGS. 1 to 8, 11 and 12, the aerosol generating substrate 10 may have the first airway(s) 10a1 and the second airway(s) 10a2 at the same time. Herein, the second airway(s) 10a2 may be located in the interior of the aerosol generating substrate 10; that is, by combining each of the skeletons 11, the interior of the aerosol generating substrate 10 may be formed with the second airway(s) 10a2.

[0088] The second airway 10a2 located in the interior of the aerosol generating substrate 10 means that the peripheral side of the second airway 10a2 is surrounded by the substrate material. That is, the inner side surface of the second airway 10a2 may be made of the substrate material, and the cross section of the second airway 10a2 may have a closed shape.

[0089] The may be one or multiple second airways 10a2.

[0090] The cross-sectional shape of the second airway 10a2 may be a polygonal shape (including, but not limited to, a square shown in FIG. 1, a rhombic shape shown in FIG. 3, a triangle shown in FIG. 12, a trapezoid, and the like); or, the cross-sectional shape of the second airway 10a2 may be a circular shape shown in FIG. 11 (in FIG. 11, the end surfaces of the end of the skeletons 11 close to each other are the arc-shaped surfaces, and such arc-shaped surfaces collectively define the second airway 10a2 having the circular cross-sectional shape).

[0091] Referring to FIGS. 1 to 6, the cross-sectional shape of the first airway 10a1 may be a portion of the cross-sectional shape of the second airway 10a2 of the airway 10a.

[0092] The cross-sectional shape of the first airway 10a1 may also be other regular or irregular polygons.

[0093] The second airway 10a2 can prolong the airflow path and increase the flow speed of the airflow in the aerosol generating substrate 10, thereby enhancing the impact force of the airflow, which can enable the aerosol to be uniformly mixed. At the same time, the aerosol generating substrate 10 may be provided with the first airway 10a1 and the second airway 10a2 simultaneously, which can enhance the porosity of the aerosol generating substrate 10 (i.e., the percentage of the sum of the volumes of the first airway(s) 10a1 and the second airway(s) 10a2 to the total volume of the aerosol generating substrate 10), and can also be beneficial to improving the consistency of extraction and release of the aerosol.

[0094] In one embodiment, referring to FIGS. 1 and 2, the outer edges of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may be located on the circumference of the same circle. The interior of the aerosol generating substrate 10 may be provided with multiple second airways 10a2, and the cross-sectional shape of each of the second airways 10a2 may be square.

[0095] The square second airway 10a2 can make full use of the internal space of the aerosol generating substrate 10 with the substantially circular cross-sectional shape, thereby enabling the accommodation of as many second airways 10a2 as possible within the aerosol generating substrate 10. As such, the porosity of the aerosol generating substrate 10 can be increased as much as possible, which can be more conductive to enhancing the consistency of aerosol extraction and release.

[0096] Furthermore, for the square second airway 10a2, the sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 30% (inclusive of the endpoint values) of the sum S of the surface areas of the side walls of all of the airways 10a. That is, S1 / S =0.5% to 30%, for example, S1 / S may be 0.5%, 5%, 10%, 15%, 20%, 30%, or the like.

[0097] The sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 30% of the sum S of the surface areas of the side walls of all of the airways 10a. As such, the first airways 10a1 and the second airways 10a2 can be relatively evenly distributed, and after being heated, the aerosol generating substrate 10 can achieve the rapid release of the aerosol through rapid heat transfer, thereby significantly improving the aerosol generation efficiency.

[0098] In addition, by controlling the sizes of the first airway 10a1 and the square second airway 10a2, the inhalation resistance (resistance to draw) of the aerosol generating substrate 10 can be adjusted, and the release amount of the aerosol can be changed, to meet different inhalation requirements.

[0099] In one embodiment, referring to FIG. 3, the outer edges of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may be located on the circumference of the same circle. The interior of the aerosol generating substrate 10 may be provided with multiple second airways 10a2, and the cross-sectional shape of each of the second airways 10a2 may be rhombic.

[0100] The rhombic second airway 10a2 can also make full use of the internal space of the aerosol generating substrate 10 with the substantially circular cross-sectional shape, thereby enabling the accommodation of as many second airways 10a2 as possible within the aerosol generating substrate 10. As such, the porosity of the aerosol generating substrate 10 can be increased as much as possible, which can be more conductive to enhancing the consistency of aerosol extraction and release.

[0101] Furthermore, for the rhombic second airway 10a2, the sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 50% (inclusive of the endpoint values) of the sum S of the surface areas of the side walls of all of the airways 10a. That is, S1 / S =0.5% to 50%, for example, S1 / S may be 0.5%, 5%, 10%, 15%, 20%, 30%, 40%, 50%, or the like.

[0102] The sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 50% of the sum S of the surface areas of the side walls of all of the airways 10a. As such, the first airways 10a1 and the second airways 10a2 can be relatively evenly distributed, and after being heated, the aerosol generating substrate 10 can achieve the rapid release of the aerosol through rapid heat transfer, thereby significantly improving the aerosol generation efficiency.

[0103] In addition, by controlling the sizes of the first airway 10a1 and the rhombic second airway 10a2, the inhalation resistance (resistance to draw) of the aerosol generating substrate 10 can be adjusted, and the release amount of the aerosol can be changed, to meet different inhalation requirements.

[0104] In one embodiment, referring to FIGS. 4 and 5, the outer edges of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may be located on the circumference of the same waist circle. The interior of the aerosol generating substrate 10 may be provided with multiple second airways 10a2, and the cross-sectional shape of each of the second airways 10a2 may be square.

[0105] Similarly, the square second airway 10a2 can make full use of the internal space of the aerosol generating substrate 10 with the substantially waist-circular cross-sectional shape, thereby enabling the accommodation of as many second airways 10a2 as possible within the aerosol generating substrate 10. As such, the porosity of the aerosol generating substrate 10 can be increased as much as possible, which can be more conductive to enhancing the consistency of aerosol extraction and release.

[0106] Furthermore, for the square second airway 10a2, the sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 40% (inclusive of the endpoint values) of the sum S of the surface areas of the side walls of all of the airways 10a. That is, S1 / S =0.5% to 40%, for example, S1 / S may be 0.5%, 5%, 10%, 15%, 20%, 30%, 40%, or the like.

[0107] The sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 40% of the sum S of the surface areas of the side walls of all of the airways 10a. As such, the first airways 10a1 and the second airways 10a2 can be relatively evenly distributed, and after being heated, the aerosol generating substrate 10 can achieve the rapid release of the aerosol through rapid heat transfer, thereby significantly improving the aerosol generation efficiency.

[0108] In addition, by controlling the sizes of the first airway 10a1 and the square second airway 10a2, the inhalation resistance (resistance to draw) of the aerosol generating substrate 10 can be adjusted, and the release amount of the aerosol can be changed, to meet different inhalation requirements.

[0109] In one embodiment, referring to FIG. 6, the outer edges of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may be located on the circumference of the same waist circle. The interior of the aerosol generating substrate 10 may be provided with multiple second airways 10a2, and the cross-sectional shape of each of the second airways 10a2 may be rhombic.

[0110] Similarly, the rhombic second airway 10a2 can make full use of the internal space of the aerosol generating substrate 10 with the substantially waist-circular cross-sectional shape, thereby enabling the accommodation of as many second airways 10a2 as possible within the aerosol generating substrate 10. As such, the porosity of the aerosol generating substrate 10 can be increased as much as possible, which can be more conductive to enhancing the consistency of aerosol extraction and release.

[0111] Furthermore, for the rhombic second airway 10a2, the sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 60% (inclusive of the endpoint values) of the sum S of the surface areas of the side walls of all of the airways 10a. That is, S1 / S =0.5% to 60%, for example, S1 / S may be 0.5%, 5%, 10%, 15%, 20%, 30%, 40%, 50%, 60%, or the like.

[0112] The sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 60% of the sum S of the surface areas of the side walls of all of the airways 10a. As such, the first airways 10a1 and the second airways 10a2 can be relatively evenly distributed, and after being heated, the aerosol generating substrate 10 can achieve the rapid release of the aerosol through rapid heat transfer, thereby significantly improving the aerosol generation efficiency.

[0113] In addition, by controlling the sizes of the first airway 10a1 and the rhombic second airway 10a2, the inhalation resistance (resistance to draw) of the aerosol generating substrate 10 can be adjusted, and the release amount of the aerosol can be changed, to meet different inhalation requirements.

[0114] In one embodiment, referring to FIGS. 7 and 8, the skeletons 11 may be combined to form a skeleton structure 11A having a first outer surface 11A1, a second outer surface 11A2 and a third outer surface 11A3. The first outer surface 11A1 and the second outer surface 11A2 are respectively located at two opposite ends of the skeleton structure 11A in the first direction; and the third outer surface 11A3 is located between the first outer surface 11A1 and the second outer surface 11A2. The third outer surface 11A3 has a first region 11A31 and a second region 11A32. The aerosol generating substrate may further be provided with an outer skin 12, the outer skin 12 covers the first region 11A31, and each of the first airways 10a1 is located in the second region 11A32. In other words, only partial region of the outer surface of the aerosol generating substrate 10 may be provided with the first airway(s) 10a1.

[0115] The number of the first regions 11A31 and the number of the second regions 11A32 may be set as needed; that is, there may be one or multiple first regions 11A31, and there may be one or multiple second regions 11A32.

[0116] Referring to FIG. 7, the first region 11A31 and the second region 11A32 may extend from the first outer surface 11A1 to the second outer surface 11A2, respectively.

[0117] Referring to FIG. 8, the first region 11A31 is located on the side of the second region 11A32 in the first direction.

[0118] By providing the outer skin 12, the heat transfer efficiency of the aerosol generating substrate 10 from the outside toward the inside or from the inside toward the outside can be enhanced, which can improve the stability of the aerosol release.

[0119] Furthermore, for the aerosol generating substrate 10 that is provided with the outer skin 12 and has multiple second airways 10a2 inside, the sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 15% (inclusive of the endpoint values) of the sum S of the surface areas of the side walls of all of the airways 10a. That is, S1 / S =0.5% to 15%, for example, S1 / S may be 0.5%, 5%, 10%, 15%, or the like. Herein, referring to FIGS. 7 and 8, the airway 10a corresponding to the location where the outer skin 12 is provided (i.e., the airway 10a that is covered by the outer skin 12 and not exposed to the exterior of the aerosol generating substrate 10) can be regarded as the second airway 10a2.

[0120] On the premise that the outer skin 12 is provided, the sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 15% of the sum S of the surface areas of the side walls of all of the airways 10a. As such, the first airways 10a1 and the second airways 10a2 can be relatively evenly distributed, and after being heated, the aerosol generating substrate 10 can achieve the rapid release of the aerosol through rapid heat transfer, thereby significantly improving the aerosol generation efficiency.

[0121] In one embodiment, referring to FIG. 1, the third outer surface 11A3 may be exposed, that is, the aerosol generating substrate 10 may not be provided with the outer skin 12, and any region of the third outer surface 11A3 may not be covered by the outer skin 12.

[0122] In one embodiment, referring to FIGS. 9 to 11, the shape of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may be a radiation shape that expands from the center toward the periphery, each of the skeletons 11 may configure the radiation shape, and the first airway 10a1 may be formed between two adjacent skeletons 11.

[0123] The aerosol generating substrate 10 with the cross section in the radiation shape can reduce the overall weight of the aerosol generating substrate 10, increase the surface areas of the side walls of the first airways 10a1, and further enhance the utilization rate of the aerosol generating substrate 10.

[0124] With continued reference to FIGS. 9 to 11, shown in FIGS. 9 and 10, the interior of the aerosol generating substrate 10 in the radiation shape may not be provided with the second airway 10a2; or, as shown in FIG. 11, the interior of the aerosol generating substrate 10 in the radiation shape may be provided with the second airway 10a2.

[0125] For the aerosol generating substrate 10 provided with the second airway 10a2, the sum S1 of the surface areas of the side walls of all of the first airways 10a1 may be greater than or equal to 50% and less than 90% of the sum S of the surface areas of the side walls of all of the airways 10a. That is, 50% ≤ S1 / S <90%, for example, S1 / S may be 50%, 60%, 70%, 80%, 89%, or the like.

[0126] The sum S1 of the surface areas of the side walls of all of the first airways 10a1 may be greater than or equal to 50% and less than 90% of the sum S of the surface areas of the side walls of all of the airways 10a. The proportion of the surface areas of the side walls of the first airways 10a1 can be increased to facilitate rapid heat transfer through the side walls of the first airways 10a1 after the aerosol generating substrate 10 is heated. Thus, the aerosol generating substrate 10 can be promoted to rapidly generate the aerosol.

[0127] In one embodiment, referring to FIG. 12, for convenience of description, the skeleton(s) 11 shown in FIG. 12 may be referred to as the first skeleton(s) 11' and the second skeleton(s) 11'', respectively. There may be multiple first skeletons 11' and multiple second skeletons 11''. The multiple first skeletons 11' may define a skeleton main body 11B having a hollow space inside. One end of each of the second skeletons 11'' in the second direction may be located in the hollow space, and another end of each of the second skeletons 11'' in the second direction may be located in an exterior of the skeleton main body 11B. The second direction may be perpendicular to the first direction. Each of the second skeletons 11'' may partition the second airway 10a2 in the hollow space, and the first airway 10a1 is formed between two adjacent second skeletons 11'' located in the exterior of the skeleton main body 11B. That is, multiple skeletons 11 may be combined to form an irregular structure.

[0128] The skeletons 11 of the aerosol generating substrate 10 can form a stable supporting structure, and thus, the problems such as collapse and deformation of the aerosol generating substrate 10 may be less likely to occur.

[0129] Furthermore, referring to FIG. 12, the aerosol generating substrate 10 may be provided with four first skeletons 11' and four second skeletons 11'', and the shape of the cross section of the skeleton main body 11B perpendicular to the first direction may be a square shape. The one end of each of the second skeletons 11'' located in the hollow space may be connected, and each of the second skeletons 11'' may extend to the exterior of the skeleton main body 11Bs from a position of the skeleton main body corresponding to a respective corner of the square shape. In other words, the four second skeletons 11'' may partition the second airways 10a2 having a triangular cross-sectional shape. Thus, the structural stability of the aerosol generating substrate 10 can be better improved.

[0130] It should be noted that the number of the first skeletons 11' and the number of the second skeletons 11'' are not limited to four, and the cross-sectional shape of the second airway 10a2 is not limited to be triangular. The number and combination manner of the first skeletons 11' and the second skeletons 11'' can be adjusted as needed, as long as the multiple first skeletons 11' can define the skeleton main body 11B having the hollow space inside, each of the second skeletons 11'' partitions the second airway 10a2 in the hollow space, and the first airway 10a1 is formed between two adjacent second skeletons 11'' located in the exterior of the skeleton main body 11B.

[0131] In addition, the sum S1 of the surface areas of the side walls of all of the first airways 10a1 may be greater than or equal to 30% and less than 90% of the sum S of the surface areas of the side walls of all of the airways 10a1. That is, 30% ≤ S1 / S <90%, for example, S1 / S may be 30%, 40%, 50%, 70%, 89%, or the like. As such, the proportion of the surface areas of the side walls of the first airways 10a1 can also be increased to facilitate rapid heat transfer through the side walls of the first airways 10a1 after the aerosol generating substrate 10 is heated. Thus, the aerosol generating substrate 10 can be promoted to rapidly generate the aerosol.

[0132] In one embodiment, referring to FIGS. 13 to 16, the aerosol generating article may be provided with an outer wrapping layer 20 in the exterior of the aerosol generating substrate 10. Specifically, referring to FIGS. 13 to 16, the aerosol generating substrate 10 has a first end and a second end in the first direction, and the outer wrapping layer 20 is wrapped with an outer peripheral side between the first end and the second end of the aerosol generating substrate 10.

[0133] The material of the outer wrapping layer 20 is not limited. For example, the material of the outer wrapping layer 20 includes, but is not limited to, one or more combinations of materials such as: fiber paper, metal foil, metal foil composite fiber paper, polyethylene composite fiber paper, polyethylene (PE), and poly butyleneadipate-co-terephthalate (PBAT).

[0134] In one embodiment, referring to FIG. 14, the aerosol generating article may further be provided with a functional segment 30. The functional segment 30 is disposed at one end of the aerosol generating substrate 10 in the first direction, and the functional segment 30 at least includes a filtering segment 31 for filtering the aerosol. The outer wrapping layer 20 is also wrapped with the outer surface of the functional segment 30.

[0135] The filtering segment 31 is used to filter the aerosol.

[0136] The material of the filtering segment 31 includes, but is not limited to, one or more combinations of materials such as: PE, Polylactic acid (PLA, also referred to as polylactide), PBAT, Polypropylene (PP), acetate fiber, and propylene fiber.

[0137] It should be noted that the aerosol generating article relies on the aerosol generating substrate 10 to generate the aerosol, and the functional segment 30 is not used to generate the aerosol.

[0138] In one embodiment, referring to FIG. 15, the functional segment 30 may also be provided with a cooling segment 32. The cooling segment 32 is disposed between the filtering segment 31 and the aerosol generating substrate 10, for performing a cooling processing on the aerosol before the filtering segment 31 filters the aerosol, thereby reducing the temperature of the aerosol and improving the phenomenon of “mouth burning sensation” experienced by the user when inhaling the aerosol.

[0139] The material of the cooling segment 32 includes, but is not limited to, one or more combinations of materials such as: PE, PLA, PBAT, PP, acetate fiber, and propylene fiber.

[0140] The material of the cooling segment 32 and the filtering segment 31 may be the same or different.

[0141] In one embodiment, referring to FIG. 16, the functional segment 30 may also be provided with a supporting segment 33, and the supporting segment 33 is disposed between the filtering segment 31 and the aerosol generating substrate 10.

[0142] The supporting segment 33 is mainly configured to provide the support for the functional segment 30, in order to enhance the structural strength of the functional segment 30, especially the structural strength at high temperatures.

[0143] The functional segment 30 may be provided with the filtering segment 31 and the supporting segment 33 without the cooling segment 32; or, the functional segment 30 may be provided with the filtering segment 31, the cooling segment 32, and the supporting segment 33 at the same time. For the functional segment 30 provided with the cooling segment 32, the supporting segment 33 may be located between the cooling segment 32 and the aerosol generating substrate 10, or may be located on the side of the cooling segment 32 facing away from the aerosol generating substrate 10.

[0144] In one embodiment, referring to FIG. 17, the functional segment 30 may also be provided with an inhalation resistance adjustment segment 34. An inhalation resistance of the inhalation resistance adjustment segment 34 is different from an inhalation resistance of the aerosol generating substrate 10. The inhalation resistance adjustment segment 34 may be located between the filtering segment 31 and the aerosol generating substrate 10; or, the inhalation resistance adjustment segment 34 may be located on the side of the filtering segment 31 facing away from the aerosol generating substrate 10. The inhalation resistance adjustment segment 34 may be mainly used to adjust the inhalation resistance to meet different inhalation requirements.

[0145] The functional segment 30 may be provided with only the filtering segment 31 and the inhalation resistance adjusting segment 34; or, on the basis of providing the filtering segment 31 and the inhalation resistance adjusting segment 34, at least one of the cooling segment 32 or the supporting segment 33 may be further provided.

[0146] In some embodiments, the aerosol generating article may also be provided with only the aerosol generating substrate 10 without the functional segment 30. For the aerosol generating article in which the functional segment 30 is not provided, the aerosol generating article may not be provided with the outer wrapping layer 20.

[0147] In the description of the present disclosure, references to the terms such as “in one embodiment”, “in some embodiments”, “in some other embodiments”, “in yet other embodiments”, or “exemplary” or the like mean that the specific feature, structure, material or characteristic described in connection with the embodiment or example may be included in at least one embodiment or example of the embodiments of the present disclosure. In the present disclosure, schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine different embodiments or examples as well as the features in different embodiments or examples described in the present disclosure unless they are not contradictory to each other.

[0148] The foregoing is merely the preferred embodiments of the present disclosure, and is not intended to limit the present disclosure. Various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent substitution, improvement, etc. made within the spirit and principles of the present disclosure shall be included in the scope of protection of the present disclosure.

Examples

Embodiment Construction

[0056]In the description of the embodiments of the present disclosure, it should be noted that the orientation or positional relationship indicated by the term such as “first direction” is based on the orientation or positional relationship shown in FIG. 1. Such orientation terms are only for the convenience of describing the embodiments of the present disclosure and to simplify the description, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the embodiments of the present disclosure.

[0057]The embodiments of the present disclosure provide an aerosol generating article. Referring to FIGS. 1 to 17, the aerosol generating article includes an aerosol generating substrate 10.

[0058]The aerosol generating substrate 10 includes at least two skeletons 11 in a straight-plate shape, and all of the skeletons 11 collectively form an int...

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a continuation of International Patent Application No. PCT / CN2024 / 120309, filed on September 23, 2024, which is based on and claims priority to Chinese Patent Application No. 202311363277.6, filed on October 19, 2023, which are incorporated by reference in their entireties.TECHNICAL FIELD

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

[0003] An aerosol generating article typically generates an aerosol in a heat-not-burn manner. Specifically, an aerosol generating substrate is provided in the aerosol generating article, and the aerosol generating substrate is heated by an external heat source, such as a heating component on an aerosol generating device, so that the aerosol generating substrate is heated to a degree just enough to release a fragrance. The aerosol generating substrate does not burn, but is loaded with an atomization agent. During the usage, the atomization agent is released by heating, to form a smoke.

[0004] In related technologies, there are three types of aerosol generating substrates: granular type, traditional tobacco type, and flake type. Such aerosol generating substrates have characteristics of a relatively low efficiency in aerosol extraction and a relatively poor inhalation experience feeling.SUMMARY

[0005] In view of the above, the embodiments of the present disclosure are expected to provide an aerosol generating substrate and an aerosol generating article capable of improving the inhalation experience feeling.

[0006] In order to achieve the above objectives, an embodiment of the present disclosure provides an aerosol generating substrate. The aerosol generating substrate includes at least two skeletons in a straight-plate shape, and all of the skeletons collectively form an integral structure having an airway.

[0007] Herein, the airway extends from one end to an opposite end of the aerosol generating substrate in a first direction, and the airway at least comprises a first airway located in an exterior of the aerosol generating substrate.

[0008] In one embodiment, the airway further includes a second airway located in an interior of the aerosol generating substrate.

[0009] In one embodiment, a cross-sectional shape of the first airway is a portion of a cross-sectional shape of the second airway.

[0010] In one embodiment, outer edges of a cross section of the aerosol generating substrate perpendicular to the first direction are located on a circumference of the same circle, ellipse or waist circle.

[0011] In one embodiment, the airway further includes a plurality of second airways located in an interior of the aerosol generating substrate, and a cross-sectional shape of each of the second airways is square or rhombic.

[0012] In one embodiment, the outer edges of the cross section of the aerosol generating substrate perpendicular to the first direction are located on the circumference of the same circle; and the cross-sectional shape of the second airways is square, and a sum of surface areas of side walls of all of the first airways accounts for 0.5% to 30% of a sum of surface areas of side walls of all of the airways.

[0013] In one embodiment, the outer edges of the cross section of the aerosol generating substrate perpendicular to the first direction are located on the circumference of the same circle; and the cross-sectional shape of the second airways is rhombic, and a sum of surface areas of side walls of all of the first airways accounts for 0.5% to 50% of a sum of surface areas of side walls of all of the airways.

[0014] In one embodiment, the outer edges of the cross section of the aerosol generating substrate perpendicular to the first direction are located on the circumference of the same waist circle; and the cross-sectional shape of each of the second airways is square, and a sum of surface areas of side walls of all of the first airways accounts for 0.5% to 40% of a sum of surface areas of side walls of all of the airways.

[0015] In one embodiment, the outer edges of the cross section of the aerosol generating substrate perpendicular to the first direction are located on the circumference of the same waist circle; and the cross-sectional shape of each of the second airways is rhombic, and a sum of surface areas of side walls of all of the first airways accounts for 0.5% to 60% of a sum of surface areas of side walls of all of the airways.

[0016] In one embodiment, the skeletons are combined to form a skeleton structure having a first outer surface, a second outer surface, and a third outer surface; the first outer surface and the second outer surface are respectively located at two opposite ends of the skeleton structure in the first direction, and the third outer surface is located between the first outer surface and the second outer surface.

[0017] The third outer surface has a first region and a second region, the aerosol generating substrate further includes an outer skin, the outer skin covers the first region, and each of the first airways is located in the second region.

[0018] In one embodiment, the first region and the second region extend from the first outer surface to the second outer surface, respectively.

[0019] In one embodiment, the first region is located on a side of the second region in the first direction.

[0020] In one embodiment, the skeletons are combined to form a skeleton structure having a first outer surface, a second outer surface, and a third outer surface; the first outer surface and the second outer surface are respectively located at two opposite ends of the skeleton structure in the first direction, the third outer surface is located between the first outer surface and the second outer surface, and the third outer surface is exposed.

[0021] In one embodiment, the airway further includes a plurality of second airways located in the interior of the aerosol generating substrate, and a sum of surface areas of side walls of all of the first airways accounts for 0.5% to 15% of a sum of surface areas of side walls of all of the airways.

[0022] In one embodiment, a shape of a cross section of the aerosol generating substrate perpendicular to the first direction is a radiation shape that expands from a center toward a periphery, each of the skeletons configures the radiation shape, and the first airway is formed between two adjacent skeletons.

[0023] In one embodiment, the airway further includes a second airway located in an interior of the aerosol generating substrate, and a sum of surface areas of side walls of all of the first airways is greater than or equal to 50% and less than 90% of a sum of surface areas of side walls of all of the airways.

[0024] In one embodiment, the skeletons include a plurality of first skeletons and a plurality of second skeletons, the plurality of first skeletons define a skeleton main body having a hollow space inside; one end of each of the second skeletons in a second direction is located in the hollow space, and another end of each of the second skeletons in the second direction is located in an exterior of the skeleton main body; wherein the second direction is perpendicular to the first direction.

[0025] Each of the second skeletons partitions the second airway in the hollow space, and the first airway is formed between two adjacent second skeletons located in the exterior of the skeleton main body.

[0026] In one embodiment, the number of the first skeletons is four, the number of the second skeletons is four, a shape of a cross section of the skeleton main body perpendicular to the first direction is a square shape; the one end of each of the second skeletons located in the hollow space is connected, and each of the second skeletons extends to the exterior of the skeleton main body from a position of the skeleton main body corresponding to a respective corner of the square shape.

[0027] In one embodiment, the sum of the surface areas of the side walls of all of the first airways is greater than or equal to 30% and less than 90% of the sum of the surface areas of the side walls of all of the airways.

[0028] In one embodiment, the aerosol generating substrate has a centrally symmetrical structure with respect to a centerline extending in the first direction.

[0029] In one embodiment, the aerosol generating substrate has an axially symmetrical structure with respect to an axis perpendicular to the first direction.

[0030] In one embodiment, the aerosol generating substrate has a columnar shape, and the first direction is an elongation direction of the aerosol generating substrate.

[0031] Another embodiment of the present disclosure provides an aerosol generating article. The aerosol generating article includes the aerosol generating substrate described above.

[0032] Another embodiment of the present disclosure provides an aerosol generating article, which includes an outer wrapping layer and the aforementioned aerosol generating substrate. The aerosol generating substrate has a first end and a second end in the first direction, and the outer wrapping layer wraps an outer peripheral side between the first end and the second end of the aerosol generating substrate.

[0033] In one embodiment, the aerosol generating article further includes a functional segment and the functional segment is disposed at one end of the aerosol generating substrate in the first direction. The functional segment at least includes a filtering segment for filtering an aerosol; and the outer wrapping layer further wraps an outer surface of the functional segment.

[0034] In one embodiment, the functional segment further includes a cooling segment, and the cooling segment is located between the filtering segment and the aerosol generating substrate.

[0035] In one embodiment, the functional segment further includes a supporting segment, and the supporting segment is located between the filtering segment and the aerosol generating substrate.

[0036] In one embodiment, the functional segment further includes an inhalation resistance adjustment segment, and an inhalation resistance of the inhalation resistance adjustment segment is different from an inhalation resistance of the aerosol generating substrate. The inhalation resistance adjustment segment is located between the filtering segment and the aerosol generating substrate.

[0037] In one embodiment, the functional segment further includes an inhalation resistance adjustment segment, and an inhalation resistance of the inhalation resistance adjustment segment is different from an inhalation resistance of the aerosol generating substrate. The inhalation resistance adjustment segment is located on a side of the filtering segment facing away from the aerosol generating substrate.

[0038] The embodiments of the present disclosure provide the aerosol generating substrate and the aerosol generating article, where the aerosol generating substrate includes at least two skeletons in the straight-plate shape, and all of the skeletons collectively form the integral structure with the airway. Herein, the airway extends from the one end to the opposite other end of the aerosol generating substrate in the first direction, and the airway at least includes the first airway located in the exterior of the aerosol generating substrate. The first airway can prolong the airflow path and increase the flow speed of the airflow in the aerosol generating substrate, thereby enhancing the impact force of the airflow, which can enable the aerosol to be uniformly mixed. At the same time, by combining the at least two skeletons having the straight-plate shape to form the first airway, the side wall of the first airway can have a relatively large surface area, and the airflow in the first airway can be sufficiently in contact with the side wall of the first airway. As such, the heat exchange capacity between the airflow in the first airway and the aerosol generating substrate can be improved, and the extraction efficiency and uniformity of the aerosol in the aerosol generating substrate can be further improved. By adopting the aerosol generating substrate of the embodiments of the present disclosure, the inhalation experience feeling of the user can be better improved.BRIEF DESCRIPTION OF THE DRAWINGS

[0039] FIG. 1 is a schematic structural diagram of a first aerosol generating substrate according to an embodiment of the present disclosure.

[0040] FIG. 2 is a schematic diagram of a cross section of the aerosol generating substrate shown in FIG. 1 perpendicular to a first direction.

[0041] FIG. 3 is a schematic structural diagram of a second aerosol generating substrate according to an embodiment of the present disclosure.

[0042] FIG. 4 is a schematic structural diagram of a third aerosol generating substrate according to an embodiment of the present disclosure.

[0043] FIG. 5 is a schematic diagram of a cross section of the aerosol generating substrate shown in FIG. 4 perpendicular to the first direction.

[0044] FIG. 6 is a schematic structural diagram of a fourth aerosol generating substrate according to an embodiment of the present disclosure.

[0045] FIG. 7 is a schematic structural diagram of a fifth aerosol generating substrate according to an embodiment of the present disclosure.

[0046] FIG. 8 is a schematic structural diagram of a sixth aerosol generating substrate according to an embodiment of the present disclosure.

[0047] FIG. 9 is a schematic structural diagram of a seventh aerosol generating substrate according to an embodiment of the present disclosure.

[0048] FIG. 10 is a schematic structural diagram of an eighth aerosol generating substrate according to an embodiment of the present disclosure.

[0049] FIG. 11 is a schematic structural diagram of a ninth aerosol generating substrate according to an embodiment of the present disclosure.

[0050] FIG. 12 is a schematic structural diagram of a tenth aerosol generating substrate according to an embodiment of the present disclosure.

[0051] FIG. 13 is a schematic structural diagram of a first aerosol generating article according to an embodiment of the present disclosure.

[0052] FIG. 14 is a cross-sectional diagram of the aerosol generating article shown in FIG. 13.

[0053] FIG. 15 is a cross-sectional diagram of a second aerosol generating article according to an embodiment of the present disclosure.

[0054] FIG. 16 is a cross-sectional diagram of a third aerosol generating article according to an embodiment of the present disclosure.

[0055] FIG. 17 is a cross-sectional diagram of a fourth aerosol generating article according to an embodiment of the present disclosure.DETAILED DESCRIPTION

[0056] In the description of the embodiments of the present disclosure, it should be noted that the orientation or positional relationship indicated by the term such as “first direction” is based on the orientation or positional relationship shown in FIG. 1. Such orientation terms are only for the convenience of describing the embodiments of the present disclosure and to simplify the description, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the embodiments of the present disclosure.

[0057] The embodiments of the present disclosure provide an aerosol generating article. Referring to FIGS. 1 to 17, the aerosol generating article includes an aerosol generating substrate 10.

[0058] The aerosol generating substrate 10 includes at least two skeletons 11 in a straight-plate shape, and all of the skeletons 11 collectively form an integral structure having an airway 10a. Herein, the airway 10a extends from one end to an opposite end of the aerosol generating substrate 10 in a first direction, and the airway 10a at least includes a first airway 10a1 located in an exterior of the aerosol generating substrate 10.

[0059] The aerosol generating article may be configured to be used in conjunction with an aerosol generating device that includes a heating component. Specifically, the heating component heats and atomizes the aerosol generating substrate 10 to generate the aerosol, for inhalation by the user or for use in medicine, cosmetics, etc.

[0060] The heating component has many heating manners. Exemplarily, the heating manners include a center heating manner and a peripheral heating manner. The center heating manner refers to a manner of inserting the heating component to the interior of the aerosol generating article, to bake and heat the aerosol generating article from the inside to the outside. The peripheral heating manner refers to a manner of setting the heating component on the periphery of the aerosol generating article, to bake and heat the aerosol generating article from the outside to the inside. Specifically, such heating manners can be applied by resistance heating, electromagnetic heating, infrared heating, microwave heating, laser heating, etc.

[0061] The specific structure of the aerosol generating substrate 10 is not limited herein. Exemplarily, in one embodiment, the aerosol generating substrate 10 may be made of an atomization medium per se, and for example, may be made of an aerosol generating fragrant medium. In some other embodiments, the aerosol generating substrate 10 may include a substrate body and an atomization medium disposed on the substrate body, and the substrate body may be, for example, a high-temperature resistant carbon fiber. Thus, through the arrangement of the substrate body, the strength of the aerosol generating substrate 10 can be enhanced, and the high temperature to a certain degree may be borne without generating peculiar smell.

[0062] The specific ingredient of the aerosol generating substrate 10 is not limited herein. Exemplarily, in one embodiment, the aerosol generating substrate 10 may include a plant ingredient, an auxiliary ingredient, a smoke-generating agent ingredient, a binder ingredient, etc.

[0063] In one embodiment, the plant ingredient is one or a combination of several types of powder formed by performing crushing treatment on tobacco raw materials, tobacco fragments, tobacco stems, tobacco powder, fragrant plants, etc. The plant ingredient is the core source of the fragrance of the article. Endogenous substances in the plant ingredient, such as nicotine, enter the human bloodstream through atomization, which promotes the pituitary gland to produce dopamine, thus achieving physiological satisfaction.

[0064] In one embodiment, the auxiliary ingredient may be one or a combination of several materials of an inorganic filler, a lubricating agent and an emulsifying agent. Herein, the inorganic filler includes one or a combination of several materials of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talcum powder and diatomite. The inorganic filler may provide a skeleton supporting effect for the plant ingredient, at the same time, the inorganic filler also has micro holes, and the wall material porosity after the plant ingredient is formed can be enhanced, so that the aerosol release rate can be improved.

[0065] The lubricating agent includes one or a combination of several materials of candelilla wax, Brazil wax, shell-lac, helianthus annuus wax, rice bran, beeswax, stearic acid and palmic acid. The lubricating agent may increase the fluidity of granules, decrease the friction among the granules, enable the integral granule distribution density to be uniform, reduce the pressure required for mold forming, and reduce the mold abrasion.

[0066] The emulsifying agent includes one or a combination of several materials of polyglycerol fatty acid ester, Tween-80 and polyvinyl alcohol. The emulsifying agent may slow down the loss of a fragrant substance during the storage process to a certain degree, enhance the stability of the fragrant substance, and improve the sensory quality of the article. The emulsifying agent (also referred to as a surfactant) can reduce the interfacial tension between water-soluble and water-insoluble components in the mixed system, and further form a robust film on a droplet surface or form a double electric layer on the droplet surface due to the charge(s) given by the emulsifier, which can prevent the droplet coalescence and maintain a uniform emulsion. Emulsification and homogenization of two immiscible components can improve the consistency of article quality.

[0067] The smoke-generating agent ingredient has a function of generating a great amount of steam when being heated, so that the aerosol volume of the smoke generating article can be improved. In one embodiment, the smoke-generating agent may include one or a combination of several materials of monohydric alcohol (such as menthol); polyhydric alcohol (such as propylene glycol, triethylene glycol, 1,3-butanediol, and glycerol); ester of polyhydric alcohol (such as gylcerol monoacetate, diacetin, or glyceryl triacetate); monocarboxylic acid; and polybasic carboxylic acid (such as lauric acid, and myristic acid) or aliphatic ester of polybasic carboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, Triactin, meso-erythritol, a diacetin mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, glycerin tributyrate, and lauryl acetate).

[0068] In one embodiment, the binder ingredient is extracted from natural plants, and is non-ionized modified viscous polysaccharide including one or a combination of several materials of tamarind polysaccharide, Pullulan, algal polysaccharide, locust bean gum, guar gum, and xyloglucan. The binder is in close contact with the interface of the ingredient material of the article by wetting, resulting in intermolecular attraction, thereby playing the role of binding the powder, liquid, etc. of the ingredient material. At the same time, the natural plants may be selected. In addition, the extraction and non-ionization of the binder can prevent the release of harmful substances such as methanol, formaldehyde, and acrolein caused by colloid modification, which can improve the safety of articles.

[0069] With continued reference to FIGS. 1 to 12, the aerosol generating substrate 10 is an integral structure. Exemplarily, the aerosol generating substrate 10 may be a particulate conjugate, which is a recombined tobacco medium, for example, a recombined tobacco medium containing ingredients such as a smoke-generating agent, a tobacco, and the like.

[0070] The aerosol generating substrate 10 may be formed into an integral structure by a process such as injection molding, compression molding, extrusion, casting, and rolling. Here, the extrusion process refers to a processing method where the raw material mixture is added into an extruder, the material is pushed forward by the screw through the action between the extruder barrel and the screw, and continuously passes through the die head to form articles or semi-finished articles of various cross sections.

[0071] Since the aerosol generating substrate10 remains the integral structure whether subjected to heat inhalation or after heat cessation, and the phenomenon of disintegration and falling is not easy to occur. This addresses issues presented in the existing flake-like, filamentous or loose-particle aerosol generating substrate such as flake detachment, filamentous or particle components falling off, and difficulty in cleaning.

[0072] Referring to FIGS. 1 to 12, the aerosol generating substrate 10 may be mainly formed by combining skeletons 11, and there may be two or more skeletons 11.

[0073] The skeleton 11 has a straight-plate shape, that is, two opposite outer surfaces of the skeleton 11 in the thickness direction of the skeleton 11 are both planar.

[0074] Among all of the skeletons 11, at least some of the skeletons 11 may intersect. That is, some of the skeletons 11 may intersect; some of the skeletons 11 may be parallel; or all of the skeletons 11 may intersect.

[0075] The airway 10a is the passage through which an external airflow and an aerosol pass. Specifically, during the heating process of the aerosol generating substrate 10, the external airflow and the aerosol released by heating the aerosol generating substrate 10 may enter the airway 10a; and the airflow entering the airway 10a may be mixed with the aerosol, and further flow out of the airway 10a with the aerosol.

[0076] The first direction may be any direction of the aerosol generating substrate 10. For example, referring to FIG. 1, the first direction may be a height direction of the aerosol generating substrate 10. In some other embodiments, the first direction may be a length direction or a width direction of the aerosol generating substrate 10 (where the height direction, the length direction, and the width direction are perpendicular to each other). The first direction may be inclined with respect to at least two of the length direction, the width direction, and the height direction of the aerosol generating substrate 10.

[0077] Exemplarily, referring to FIG. 1, the aerosol generating substrate 10 may have a columnar shape, and the first direction may be an elongation direction (i.e., a height direction) of the aerosol generating substrate 10.

[0078] The shape of the cross section of the aerosol generating substrate 10 perpendicular to the first direction is not limited. Exemplarily, referring to FIGS. 1 and 2, the outer edges of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may be located on the circumference of the same circle (i.e., the dashed circle C1 shown in FIG. 2). The outer edges of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may refer to the point(s) or line(s) at the outermost side of the cross section. Such point(s) or line(s) may be located on the circumference of the same circle, which is regarded to be corresponding to the shape of the cross section of the aerosol generating substrate 10 perpendicular to the first direction to be the substantially circular.

[0079] Exemplarily, referring to FIGS. 4 and 5, the outer edges of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may also be located on the circumference of the same waist circle (i.e., the dashed waist circle C2 shown in FIG. 5). The waist circle refers to a closed shape formed by bisecting a circle into two semicircular arcs through the center of the circle and translating in opposite directions to each other, and connecting the endpoints of the two semicircular arcs with two parallel lines of the equal length. In other words, the shape of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may be substantially waist circular. The substantially waist-circular cross section of the aerosol generating substrate 10 perpendicular to the first direction may facilitate manufacture and storage, and may also provide a relatively large atomization surface area in a relatively small space.

[0080] Exemplarily, the outer edges of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may also be located on the circumference of the same ellipse. In other words, the shape of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may be substantially elliptical.

[0081] The aerosol generating substrate 10 may have a symmetrical structure. For example, the aerosol generating substrate 10 may have a centrally symmetrical structure with respect to a centerline extending in the first direction, or may have an axially symmetrical structure with respect to an axis perpendicular to the first direction.

[0082] The aerosol generating substrate 10 may have an asymmetrical structure. For example, the shape of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may have the asymmetrical structure, or all of the airways 10a on the aerosol generating substrate 10 may be asymmetrically distributed.

[0083] The first airway 10a1 may be located in the exterior of the aerosol generating substrate 10. In other words, the first airway 10a1 is located on the outer surface of the aerosol generating substrate 10, and the cross section of the first airway 10a1 has a non-closed shape.

[0084] There may be one or multiple first airways 10a1.

[0085] The first airway 10a1 is configured by the skeletons 11. The side wall of the first airway 10a1 may be constituted by at least a portion of the outer surface on one side of the first airway 10a1, in its thickness direction, on which the first airway 10a1 is configured.

[0086] The first airway 10a1 can prolong the airflow path and increase the flow speed of the airflow in the aerosol generating substrate 10, thereby enhancing the impact force of the airflow, which can enable the aerosol to be uniformly mixed. At the same time, by combining the at least two skeletons 11 having the straight-plate shape to form the first airway(s) 10a1, the side wall of the first airway 10a1 can have a relatively large surface area, and the airflow in the first airway 10a1 can be sufficiently in contact with the side wall of the first airway 10a1. As such, the heat exchange capacity between the airflow in the first airway 10a1 and the aerosol generating substrate 10 can be improved, and the extraction efficiency and uniformity of the aerosol in the aerosol generating substrate 10 can be further improved. By adopting the aerosol generating substrate 10 in the embodiments of the present disclosure, the inhalation experience feeling of the user can be better improved.

[0087] In one embodiment, referring to FIGS. 1 to 8, 11 and 12, the aerosol generating substrate 10 may have the first airway(s) 10a1 and the second airway(s) 10a2 at the same time. Herein, the second airway(s) 10a2 may be located in the interior of the aerosol generating substrate 10; that is, by combining each of the skeletons 11, the interior of the aerosol generating substrate 10 may be formed with the second airway(s) 10a2.

[0088] The second airway 10a2 located in the interior of the aerosol generating substrate 10 means that the peripheral side of the second airway 10a2 is surrounded by the substrate material. That is, the inner side surface of the second airway 10a2 may be made of the substrate material, and the cross section of the second airway 10a2 may have a closed shape.

[0089] The may be one or multiple second airways 10a2.

[0090] The cross-sectional shape of the second airway 10a2 may be a polygonal shape (including, but not limited to, a square shown in FIG. 1, a rhombic shape shown in FIG. 3, a triangle shown in FIG. 12, a trapezoid, and the like); or, the cross-sectional shape of the second airway 10a2 may be a circular shape shown in FIG. 11 (in FIG. 11, the end surfaces of the end of the skeletons 11 close to each other are the arc-shaped surfaces, and such arc-shaped surfaces collectively define the second airway 10a2 having the circular cross-sectional shape).

[0091] Referring to FIGS. 1 to 6, the cross-sectional shape of the first airway 10a1 may be a portion of the cross-sectional shape of the second airway 10a2 of the airway 10a.

[0092] The cross-sectional shape of the first airway 10a1 may also be other regular or irregular polygons.

[0093] The second airway 10a2 can prolong the airflow path and increase the flow speed of the airflow in the aerosol generating substrate 10, thereby enhancing the impact force of the airflow, which can enable the aerosol to be uniformly mixed. At the same time, the aerosol generating substrate 10 may be provided with the first airway 10a1 and the second airway 10a2 simultaneously, which can enhance the porosity of the aerosol generating substrate 10 (i.e., the percentage of the sum of the volumes of the first airway(s) 10a1 and the second airway(s) 10a2 to the total volume of the aerosol generating substrate 10), and can also be beneficial to improving the consistency of extraction and release of the aerosol.

[0094] In one embodiment, referring to FIGS. 1 and 2, the outer edges of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may be located on the circumference of the same circle. The interior of the aerosol generating substrate 10 may be provided with multiple second airways 10a2, and the cross-sectional shape of each of the second airways 10a2 may be square.

[0095] The square second airway 10a2 can make full use of the internal space of the aerosol generating substrate 10 with the substantially circular cross-sectional shape, thereby enabling the accommodation of as many second airways 10a2 as possible within the aerosol generating substrate 10. As such, the porosity of the aerosol generating substrate 10 can be increased as much as possible, which can be more conductive to enhancing the consistency of aerosol extraction and release.

[0096] Furthermore, for the square second airway 10a2, the sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 30% (inclusive of the endpoint values) of the sum S of the surface areas of the side walls of all of the airways 10a. That is, S1 / S =0.5% to 30%, for example, S1 / S may be 0.5%, 5%, 10%, 15%, 20%, 30%, or the like.

[0097] The sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 30% of the sum S of the surface areas of the side walls of all of the airways 10a. As such, the first airways 10a1 and the second airways 10a2 can be relatively evenly distributed, and after being heated, the aerosol generating substrate 10 can achieve the rapid release of the aerosol through rapid heat transfer, thereby significantly improving the aerosol generation efficiency.

[0098] In addition, by controlling the sizes of the first airway 10a1 and the square second airway 10a2, the inhalation resistance (resistance to draw) of the aerosol generating substrate 10 can be adjusted, and the release amount of the aerosol can be changed, to meet different inhalation requirements.

[0099] In one embodiment, referring to FIG. 3, the outer edges of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may be located on the circumference of the same circle. The interior of the aerosol generating substrate 10 may be provided with multiple second airways 10a2, and the cross-sectional shape of each of the second airways 10a2 may be rhombic.

[0100] The rhombic second airway 10a2 can also make full use of the internal space of the aerosol generating substrate 10 with the substantially circular cross-sectional shape, thereby enabling the accommodation of as many second airways 10a2 as possible within the aerosol generating substrate 10. As such, the porosity of the aerosol generating substrate 10 can be increased as much as possible, which can be more conductive to enhancing the consistency of aerosol extraction and release.

[0101] Furthermore, for the rhombic second airway 10a2, the sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 50% (inclusive of the endpoint values) of the sum S of the surface areas of the side walls of all of the airways 10a. That is, S1 / S =0.5% to 50%, for example, S1 / S may be 0.5%, 5%, 10%, 15%, 20%, 30%, 40%, 50%, or the like.

[0102] The sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 50% of the sum S of the surface areas of the side walls of all of the airways 10a. As such, the first airways 10a1 and the second airways 10a2 can be relatively evenly distributed, and after being heated, the aerosol generating substrate 10 can achieve the rapid release of the aerosol through rapid heat transfer, thereby significantly improving the aerosol generation efficiency.

[0103] In addition, by controlling the sizes of the first airway 10a1 and the rhombic second airway 10a2, the inhalation resistance (resistance to draw) of the aerosol generating substrate 10 can be adjusted, and the release amount of the aerosol can be changed, to meet different inhalation requirements.

[0104] In one embodiment, referring to FIGS. 4 and 5, the outer edges of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may be located on the circumference of the same waist circle. The interior of the aerosol generating substrate 10 may be provided with multiple second airways 10a2, and the cross-sectional shape of each of the second airways 10a2 may be square.

[0105] Similarly, the square second airway 10a2 can make full use of the internal space of the aerosol generating substrate 10 with the substantially waist-circular cross-sectional shape, thereby enabling the accommodation of as many second airways 10a2 as possible within the aerosol generating substrate 10. As such, the porosity of the aerosol generating substrate 10 can be increased as much as possible, which can be more conductive to enhancing the consistency of aerosol extraction and release.

[0106] Furthermore, for the square second airway 10a2, the sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 40% (inclusive of the endpoint values) of the sum S of the surface areas of the side walls of all of the airways 10a. That is, S1 / S =0.5% to 40%, for example, S1 / S may be 0.5%, 5%, 10%, 15%, 20%, 30%, 40%, or the like.

[0107] The sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 40% of the sum S of the surface areas of the side walls of all of the airways 10a. As such, the first airways 10a1 and the second airways 10a2 can be relatively evenly distributed, and after being heated, the aerosol generating substrate 10 can achieve the rapid release of the aerosol through rapid heat transfer, thereby significantly improving the aerosol generation efficiency.

[0108] In addition, by controlling the sizes of the first airway 10a1 and the square second airway 10a2, the inhalation resistance (resistance to draw) of the aerosol generating substrate 10 can be adjusted, and the release amount of the aerosol can be changed, to meet different inhalation requirements.

[0109] In one embodiment, referring to FIG. 6, the outer edges of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may be located on the circumference of the same waist circle. The interior of the aerosol generating substrate 10 may be provided with multiple second airways 10a2, and the cross-sectional shape of each of the second airways 10a2 may be rhombic.

[0110] Similarly, the rhombic second airway 10a2 can make full use of the internal space of the aerosol generating substrate 10 with the substantially waist-circular cross-sectional shape, thereby enabling the accommodation of as many second airways 10a2 as possible within the aerosol generating substrate 10. As such, the porosity of the aerosol generating substrate 10 can be increased as much as possible, which can be more conductive to enhancing the consistency of aerosol extraction and release.

[0111] Furthermore, for the rhombic second airway 10a2, the sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 60% (inclusive of the endpoint values) of the sum S of the surface areas of the side walls of all of the airways 10a. That is, S1 / S =0.5% to 60%, for example, S1 / S may be 0.5%, 5%, 10%, 15%, 20%, 30%, 40%, 50%, 60%, or the like.

[0112] The sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 60% of the sum S of the surface areas of the side walls of all of the airways 10a. As such, the first airways 10a1 and the second airways 10a2 can be relatively evenly distributed, and after being heated, the aerosol generating substrate 10 can achieve the rapid release of the aerosol through rapid heat transfer, thereby significantly improving the aerosol generation efficiency.

[0113] In addition, by controlling the sizes of the first airway 10a1 and the rhombic second airway 10a2, the inhalation resistance (resistance to draw) of the aerosol generating substrate 10 can be adjusted, and the release amount of the aerosol can be changed, to meet different inhalation requirements.

[0114] In one embodiment, referring to FIGS. 7 and 8, the skeletons 11 may be combined to form a skeleton structure 11A having a first outer surface 11A1, a second outer surface 11A2 and a third outer surface 11A3. The first outer surface 11A1 and the second outer surface 11A2 are respectively located at two opposite ends of the skeleton structure 11A in the first direction; and the third outer surface 11A3 is located between the first outer surface 11A1 and the second outer surface 11A2. The third outer surface 11A3 has a first region 11A31 and a second region 11A32. The aerosol generating substrate may further be provided with an outer skin 12, the outer skin 12 covers the first region 11A31, and each of the first airways 10a1 is located in the second region 11A32. In other words, only partial region of the outer surface of the aerosol generating substrate 10 may be provided with the first airway(s) 10a1.

[0115] The number of the first regions 11A31 and the number of the second regions 11A32 may be set as needed; that is, there may be one or multiple first regions 11A31, and there may be one or multiple second regions 11A32.

[0116] Referring to FIG. 7, the first region 11A31 and the second region 11A32 may extend from the first outer surface 11A1 to the second outer surface 11A2, respectively.

[0117] Referring to FIG. 8, the first region 11A31 is located on the side of the second region 11A32 in the first direction.

[0118] By providing the outer skin 12, the heat transfer efficiency of the aerosol generating substrate 10 from the outside toward the inside or from the inside toward the outside can be enhanced, which can improve the stability of the aerosol release.

[0119] Furthermore, for the aerosol generating substrate 10 that is provided with the outer skin 12 and has multiple second airways 10a2 inside, the sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 15% (inclusive of the endpoint values) of the sum S of the surface areas of the side walls of all of the airways 10a. That is, S1 / S =0.5% to 15%, for example, S1 / S may be 0.5%, 5%, 10%, 15%, or the like. Herein, referring to FIGS. 7 and 8, the airway 10a corresponding to the location where the outer skin 12 is provided (i.e., the airway 10a that is covered by the outer skin 12 and not exposed to the exterior of the aerosol generating substrate 10) can be regarded as the second airway 10a2.

[0120] On the premise that the outer skin 12 is provided, the sum S1 of the surface areas of the side walls of all of the first airways 10a1 may account for 0.5% to 15% of the sum S of the surface areas of the side walls of all of the airways 10a. As such, the first airways 10a1 and the second airways 10a2 can be relatively evenly distributed, and after being heated, the aerosol generating substrate 10 can achieve the rapid release of the aerosol through rapid heat transfer, thereby significantly improving the aerosol generation efficiency.

[0121] In one embodiment, referring to FIG. 1, the third outer surface 11A3 may be exposed, that is, the aerosol generating substrate 10 may not be provided with the outer skin 12, and any region of the third outer surface 11A3 may not be covered by the outer skin 12.

[0122] In one embodiment, referring to FIGS. 9 to 11, the shape of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may be a radiation shape that expands from the center toward the periphery, each of the skeletons 11 may configure the radiation shape, and the first airway 10a1 may be formed between two adjacent skeletons 11.

[0123] The aerosol generating substrate 10 with the cross section in the radiation shape can reduce the overall weight of the aerosol generating substrate 10, increase the surface areas of the side walls of the first airways 10a1, and further enhance the utilization rate of the aerosol generating substrate 10.

[0124] With continued reference to FIGS. 9 to 11, shown in FIGS. 9 and 10, the interior of the aerosol generating substrate 10 in the radiation shape may not be provided with the second airway 10a2; or, as shown in FIG. 11, the interior of the aerosol generating substrate 10 in the radiation shape may be provided with the second airway 10a2.

[0125] For the aerosol generating substrate 10 provided with the second airway 10a2, the sum S1 of the surface areas of the side walls of all of the first airways 10a1 may be greater than or equal to 50% and less than 90% of the sum S of the surface areas of the side walls of all of the airways 10a. That is, 50% ≤ S1 / S <90%, for example, S1 / S may be 50%, 60%, 70%, 80%, 89%, or the like.

[0126] The sum S1 of the surface areas of the side walls of all of the first airways 10a1 may be greater than or equal to 50% and less than 90% of the sum S of the surface areas of the side walls of all of the airways 10a. The proportion of the surface areas of the side walls of the first airways 10a1 can be increased to facilitate rapid heat transfer through the side walls of the first airways 10a1 after the aerosol generating substrate 10 is heated. Thus, the aerosol generating substrate 10 can be promoted to rapidly generate the aerosol.

[0127] In one embodiment, referring to FIG. 12, for convenience of description, the skeleton(s) 11 shown in FIG. 12 may be referred to as the first skeleton(s) 11' and the second skeleton(s) 11'', respectively. There may be multiple first skeletons 11' and multiple second skeletons 11''. The multiple first skeletons 11' may define a skeleton main body 11B having a hollow space inside. One end of each of the second skeletons 11'' in the second direction may be located in the hollow space, and another end of each of the second skeletons 11'' in the second direction may be located in an exterior of the skeleton main body 11B. The second direction may be perpendicular to the first direction. Each of the second skeletons 11'' may partition the second airway 10a2 in the hollow space, and the first airway 10a1 is formed between two adjacent second skeletons 11'' located in the exterior of the skeleton main body 11B. That is, multiple skeletons 11 may be combined to form an irregular structure.

[0128] The skeletons 11 of the aerosol generating substrate 10 can form a stable supporting structure, and thus, the problems such as collapse and deformation of the aerosol generating substrate 10 may be less likely to occur.

[0129] Furthermore, referring to FIG. 12, the aerosol generating substrate 10 may be provided with four first skeletons 11' and four second skeletons 11'', and the shape of the cross section of the skeleton main body 11B perpendicular to the first direction may be a square shape. The one end of each of the second skeletons 11'' located in the hollow space may be connected, and each of the second skeletons 11'' may extend to the exterior of the skeleton main body 11Bs from a position of the skeleton main body corresponding to a respective corner of the square shape. In other words, the four second skeletons 11'' may partition the second airways 10a2 having a triangular cross-sectional shape. Thus, the structural stability of the aerosol generating substrate 10 can be better improved.

[0130] It should be noted that the number of the first skeletons 11' and the number of the second skeletons 11'' are not limited to four, and the cross-sectional shape of the second airway 10a2 is not limited to be triangular. The number and combination manner of the first skeletons 11' and the second skeletons 11'' can be adjusted as needed, as long as the multiple first skeletons 11' can define the skeleton main body 11B having the hollow space inside, each of the second skeletons 11'' partitions the second airway 10a2 in the hollow space, and the first airway 10a1 is formed between two adjacent second skeletons 11'' located in the exterior of the skeleton main body 11B.

[0131] In addition, the sum S1 of the surface areas of the side walls of all of the first airways 10a1 may be greater than or equal to 30% and less than 90% of the sum S of the surface areas of the side walls of all of the airways 10a1. That is, 30% ≤ S1 / S <90%, for example, S1 / S may be 30%, 40%, 50%, 70%, 89%, or the like. As such, the proportion of the surface areas of the side walls of the first airways 10a1 can also be increased to facilitate rapid heat transfer through the side walls of the first airways 10a1 after the aerosol generating substrate 10 is heated. Thus, the aerosol generating substrate 10 can be promoted to rapidly generate the aerosol.

[0132] In one embodiment, referring to FIGS. 13 to 16, the aerosol generating article may be provided with an outer wrapping layer 20 in the exterior of the aerosol generating substrate 10. Specifically, referring to FIGS. 13 to 16, the aerosol generating substrate 10 has a first end and a second end in the first direction, and the outer wrapping layer 20 is wrapped with an outer peripheral side between the first end and the second end of the aerosol generating substrate 10.

[0133] The material of the outer wrapping layer 20 is not limited. For example, the material of the outer wrapping layer 20 includes, but is not limited to, one or more combinations of materials such as: fiber paper, metal foil, metal foil composite fiber paper, polyethylene composite fiber paper, polyethylene (PE), and poly butyleneadipate-co-terephthalate (PBAT).

[0134] In one embodiment, referring to FIG. 14, the aerosol generating article may further be provided with a functional segment 30. The functional segment 30 is disposed at one end of the aerosol generating substrate 10 in the first direction, and the functional segment 30 at least includes a filtering segment 31 for filtering the aerosol. The outer wrapping layer 20 is also wrapped with the outer surface of the functional segment 30.

[0135] The filtering segment 31 is used to filter the aerosol.

[0136] The material of the filtering segment 31 includes, but is not limited to, one or more combinations of materials such as: PE, Polylactic acid (PLA, also referred to as polylactide), PBAT, Polypropylene (PP), acetate fiber, and propylene fiber.

[0137] It should be noted that the aerosol generating article relies on the aerosol generating substrate 10 to generate the aerosol, and the functional segment 30 is not used to generate the aerosol.

[0138] In one embodiment, referring to FIG. 15, the functional segment 30 may also be provided with a cooling segment 32. The cooling segment 32 is disposed between the filtering segment 31 and the aerosol generating substrate 10, for performing a cooling processing on the aerosol before the filtering segment 31 filters the aerosol, thereby reducing the temperature of the aerosol and improving the phenomenon of “mouth burning sensation” experienced by the user when inhaling the aerosol.

[0139] The material of the cooling segment 32 includes, but is not limited to, one or more combinations of materials such as: PE, PLA, PBAT, PP, acetate fiber, and propylene fiber.

[0140] The material of the cooling segment 32 and the filtering segment 31 may be the same or different.

[0141] In one embodiment, referring to FIG. 16, the functional segment 30 may also be provided with a supporting segment 33, and the supporting segment 33 is disposed between the filtering segment 31 and the aerosol generating substrate 10.

[0142] The supporting segment 33 is mainly configured to provide the support for the functional segment 30, in order to enhance the structural strength of the functional segment 30, especially the structural strength at high temperatures.

[0143] The functional segment 30 may be provided with the filtering segment 31 and the supporting segment 33 without the cooling segment 32; or, the functional segment 30 may be provided with the filtering segment 31, the cooling segment 32, and the supporting segment 33 at the same time. For the functional segment 30 provided with the cooling segment 32, the supporting segment 33 may be located between the cooling segment 32 and the aerosol generating substrate 10, or may be located on the side of the cooling segment 32 facing away from the aerosol generating substrate 10.

[0144] In one embodiment, referring to FIG. 17, the functional segment 30 may also be provided with an inhalation resistance adjustment segment 34. An inhalation resistance of the inhalation resistance adjustment segment 34 is different from an inhalation resistance of the aerosol generating substrate 10. The inhalation resistance adjustment segment 34 may be located between the filtering segment 31 and the aerosol generating substrate 10; or, the inhalation resistance adjustment segment 34 may be located on the side of the filtering segment 31 facing away from the aerosol generating substrate 10. The inhalation resistance adjustment segment 34 may be mainly used to adjust the inhalation resistance to meet different inhalation requirements.

[0145] The functional segment 30 may be provided with only the filtering segment 31 and the inhalation resistance adjusting segment 34; or, on the basis of providing the filtering segment 31 and the inhalation resistance adjusting segment 34, at least one of the cooling segment 32 or the supporting segment 33 may be further provided.

[0146] In some embodiments, the aerosol generating article may also be provided with only the aerosol generating substrate 10 without the functional segment 30. For the aerosol generating article in which the functional segment 30 is not provided, the aerosol generating article may not be provided with the outer wrapping layer 20.

[0147] In the description of the present disclosure, references to the terms such as “in one embodiment”, “in some embodiments”, “in some other embodiments”, “in yet other embodiments”, or “exemplary” or the like mean that the specific feature, structure, material or characteristic described in connection with the embodiment or example may be included in at least one embodiment or example of the embodiments of the present disclosure. In the present disclosure, schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine different embodiments or examples as well as the features in different embodiments or examples described in the present disclosure unless they are not contradictory to each other.

[0148] The foregoing is merely the preferred embodiments of the present disclosure, and is not intended to limit the present disclosure. Various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent substitution, improvement, etc. made within the spirit and principles of the present disclosure shall be included in the scope of protection of the present disclosure.

Examples

Embodiment Construction

[0056]In the description of the embodiments of the present disclosure, it should be noted that the orientation or positional relationship indicated by the term such as “first direction” is based on the orientation or positional relationship shown in FIG. 1. Such orientation terms are only for the convenience of describing the embodiments of the present disclosure and to simplify the description, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the embodiments of the present disclosure.

[0057]The embodiments of the present disclosure provide an aerosol generating article. Referring to FIGS. 1 to 17, the aerosol generating article includes an aerosol generating substrate 10.

[0058]The aerosol generating substrate 10 includes at least two skeletons 11 in a straight-plate shape, and all of the skeletons 11 collectively form an int...

Claims

1. An aerosol generating substrate, comprising at least two skeletons in a straight-plate shape, and all of the skeletons collectively forming an integral structure having an airway;wherein the airway extends from one end to an opposite end of the aerosol generating substrate in a first direction, and the airway at least comprises a first airway located in an exterior of the aerosol generating substrate.

2. The aerosol generating substrate of claim 1, wherein the airway further comprises a second airway located in an interior of the aerosol generating substrate.

3. The aerosol generating substrate of claim 2, wherein a cross-sectional shape of the first airway is a portion of a cross-sectional shape of the second airway.

4. The aerosol generating substrate of claim 1, wherein outer edges of a cross section of the aerosol generating substrate perpendicular to the first direction are located on a circumference of the same circle, ellipse or waist circle.

5. The aerosol generating substrate of claim 4, wherein the airway further comprises a plurality of second airways located in an interior of the aerosol generating substrate, and a cross-sectional shape of each of the second airways is square or rhombic.

6. The aerosol generating substrate of claim 5, wherein the outer edges of the cross section of the aerosol generating substrate perpendicular to the first direction are located on the circumference of the same circle;the cross-sectional shape of the second airways is square, and a sum of surface areas of side walls of all of the first airways accounts for 0.5% to 30% of a sum of surface areas of side walls of all of the airways; or, the cross-sectional shape of the second airways is rhombic, and a sum of surface areas of side walls of all of the first airways accounts for 0.5% to 50% of a sum of surface areas of side walls of all of the airways;or,wherein the outer edges of the cross section of the aerosol generating substrate perpendicular to the first direction are located on the circumference of the same waist circle;the cross-sectional shape of each of the second airways is square, and a sum of surface areas of side walls of all of the first airways accounts for 0.5% to 40% of a sum of surface areas of side walls of all of the airways; or, the cross-sectional shape of each of the second airways is rhombic, and a sum of surface areas of side walls of all of the first airways accounts for 0.5% to 60% of a sum of surface areas of side walls of all of the airways.

7. The aerosol generating substrate of claim 1, wherein the skeletons are combined to form a skeleton structure having a first outer surface, a second outer surface, and a third outer surface; the first outer surface and the second outer surface are respectively located at two opposite ends of the skeleton structure in the first direction, and the third outer surface is located between the first outer surface and the second outer surface; andthe third outer surface has a first region and a second region, the aerosol generating substrate further comprises an outer skin, the outer skin covers the first region, and each of the first airways is located in the second region.

8. The aerosol generating substrate of claim 7, wherein the first region and the second region extend from the first outer surface to the second outer surface, respectively; or,the first region is located on a side of the second region in the first direction.

9. The aerosol generating substrate of claim 1, wherein the skeletons are combined to form a skeleton structure having a first outer surface, a second outer surface, and a third outer surface; the first outer surface and the second outer surface are respectively located at two opposite ends of the skeleton structure in the first direction, the third outer surface is located between the first outer surface and the second outer surface, and the third outer surface is exposed.

10. The aerosol generating substrate of claim 7, wherein the airway further comprises a plurality of second airways located in the interior of the aerosol generating substrate, and a sum of surface areas of side walls of all of the first airways accounts for 0.5% to 15% of a sum of surface areas of side walls of all of the airways.

11. The aerosol generating substrate of claim 1, wherein a shape of a cross section of the aerosol generating substrate perpendicular to the first direction is a radiation shape that expands from a center toward a periphery, each of the skeletons configures the radiation shape, and the first airway is formed between two adjacent skeletons.

12. The aerosol generating substrate of claim 10, wherein the airway further comprises a second airway located in an interior of the aerosol generating substrate, and a sum of surface areas of side walls of all of the first airways is greater than or equal to 50% and less than 90% of a sum of surface areas of side walls of all of the airways.

13. The aerosol generating substrate of claim 2, wherein the skeletons comprise a plurality of first skeletons and a plurality of second skeletons, the plurality of first skeletons define a skeleton main body having a hollow space inside; one end of each of the second skeletons in a second direction is located in the hollow space, and another end of each of the second skeletons in the second direction is located in an exterior of the skeleton main body; wherein the second direction is perpendicular to the first direction; andeach of the second skeletons partitions the second airway in the hollow space, and the first airway is formed between two adjacent second skeletons located in the exterior of the skeleton main body.

14. The aerosol generating substrate of claim 13, wherein a number of the first skeletons is four, a number of the second skeletons is four, a shape of a cross section of the skeleton main body perpendicular to the first direction is a square shape; the one end of each of the second skeletons located in the hollow space is connected, and each of the second skeletons extends to the exterior of the skeleton main body from a position of the skeleton main body corresponding to a respective corner of the square shape.

15. The aerosol generating substrate of claim 12, wherein the sum of the surface areas of the side walls of all of the first airways is greater than or equal to 30% and less than 90% of the sum of the surface areas of the side walls of all of the airways.

16. The aerosol generating substrate of claim 1, wherein the aerosol generating substrate has a centrally symmetrical structure with respect to a centerline extending in the first direction; or,the aerosol generating substrate has an axially symmetrical structure with respect to an axis perpendicular to the first direction.

17. The aerosol generating substrate of claim 1, wherein the aerosol generating substrate has a columnar shape, and the first direction is an elongation direction of the aerosol generating substrate.

18. An aerosol generating article, comprising an outer wrapping layer and an aerosol generating substrate;wherein the aerosol generating substrate comprises at least two skeletons in a straight-plate shape, and all of the skeletons collectively forming an integral structure having an airway; the airway extends from one end to an opposite end of the aerosol generating substrate in a first direction, and the airway at least comprises a first airway located in an exterior of the aerosol generating substrate;wherein the aerosol generating substrate has a first end and a second end in the first direction, and the outer wrapping layer wraps an outer peripheral side between the first end and the second end of the aerosol generating substrate.

19. The aerosol generating article of claim 18, further comprising a functional segment, wherein the functional segment is disposed at one end of the aerosol generating substrate in the first direction, the functional segment at least comprises a filtering segment for filtering an aerosol; and the outer wrapping layer is further wrapped around an outer surface of the functional segment;wherein the functional segment further comprises a cooling segment, and the cooling segment is located between the filtering segment and the aerosol generating substrate; and / or,the functional segment further comprises a supporting segment, and the supporting segment is located between the filtering segment and the aerosol generating substrate.

20. The aerosol generating article of claim 19, wherein the functional segment further comprises an inhalation resistance adjustment segment, and an inhalation resistance of the inhalation resistance adjustment segment is different from an inhalation resistance of the aerosol generating substrate;the inhalation resistance adjustment segment is located between the filtering segment and the aerosol generating substrate; or,the inhalation resistance adjustment segment is located on a side of the filtering segment facing away from the aerosol generating substrate.

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