US20250344751A1

US20250344751A1 - Aerosol generating substrate and aerosol generating product

Info

Publication number: US20250344751A1
Application number: US19/275,009
Authority: US
Inventors: Jianguo TANG; Mingwen WEI; Jun Ni
Original assignee: Smoore International Holdings Ltd
Current assignee: Smoore International Holdings Ltd
Priority date: 2023-01-20
Filing date: 2025-07-21
Publication date: 2025-11-13
Also published as: EP4643689A1; KR20250131811A; WO2024152528A1; CN118402654A

Abstract

An aerosol generating substrate includes: an airway that penetrates through at least one end of the aerosol generating substrate in a length direction. On a cross section perpendicular to the length direction of the aerosol generating substrate, a ratio of the total cross sectional area of the airway to a cross sectional area of the aerosol generating substrate is 5% to 95%.

Description

CROSS-REFERENCE TO PRIOR APPLICATION

This application is a continuation of International Patent Application No. PCT/CN2023/105951, filed on Jul. 5, 2023, which claims priority to Chinese Patent Application No. 202310079540.2, filed on Jan. 20, 2023. The entire disclosure of both applications is hereby incorporated by reference herein.

FIELD

The present application relates to the technical field of aerosol generating products, and in particular, to an aerosol generating substrate and an aerosol generating product.

BACKGROUND

Aerosol generating products include an aerosol generating product that generates an aerosol by ignition and an aerosol generating product that generates an aerosol by heat-not-burn. In a typical aerosol generating product that is heat-not-burn, it contains an aerosol generating substrate such as tobacco materials, flavor materials, and/or atomizing agents which can volatilize to generate aerosols when heated. The aerosol generating product is heated by an external heat source, and the aerosol generating substrate is just heated enough to generate an aerosol, and will not burn. An atomizing agent is loaded and is released by high-temperature heating when used, thus generating aerosol.
In related technologies, the aerosol generating substrate tends to cause difficult inhaling, and uneven aerosol release during user inhaling.

SUMMARY

In an embodiment, the present invention provides an aerosol generating substrate, comprising: an airway that penetrates through at least one end of the aerosol generating substrate in a length direction, wherein, on a cross section perpendicular to the length direction of the aerosol generating substrate, a ratio of the total cross sectional area of the airway to a cross sectional area of the aerosol generating substrate is 5% to 95%.

BRIEF DESCRIPTION OF THE DRAWINGS

Subject matter of the present disclosure will be described in even greater detail below based on the exemplary figures. All features described and/or illustrated herein can be used alone or combined in different combinations. The features and advantages of various embodiments will become apparent by reading the following detailed description with reference to the attached drawings, which illustrate the following:

FIG. 1 is a schematic structural diagram of a first aerosol generating product according to an embodiment of the present application;

FIG. 2 is a half-sectional diagram of a first aerosol generating product shown in FIG. 1 ;

FIG. 3 is a schematic structural diagram of a second aerosol generating product according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a first aerosol generating substrate according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a second aerosol generating substrate according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a third aerosol generating substrate according to an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a fourth aerosol generating substrate according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a fifth aerosol generating substrate according to an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a sixth aerosol generating substrate according to an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a seventh aerosol generating substrate according to an embodiment of the present application;

FIG. 11 is a schematic structural diagram of an eighth aerosol generating substrate according to an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a ninth aerosol generating substrate according to an embodiment of the present application;

FIG. 13 is a schematic structural diagram of a tenth aerosol generating substrate according to an embodiment of the present application;

FIG. 14 is a schematic structural diagram of an eleventh aerosol generating substrate according to an embodiment of the present application;

FIG. 15 is a schematic structural diagram of a twelfth aerosol generating substrate according to an embodiment of the present application;

FIG. 16 is a schematic structural diagram of a thirteenth aerosol generating substrate according to an embodiment of the present application;

FIG. 17 is a schematic structural diagram of a fourteenth aerosol generating substrate according to an embodiment of the present application;

FIG. 18 is a schematic structural diagram of a fifteenth aerosol generating substrate according to an embodiment of the present application;

FIG. 19 is a schematic structural diagram of a sixteenth aerosol generating substrate according to an embodiment of the present application;

FIG. 20 is a schematic structural diagram of a seventeenth aerosol generating substrate according to an embodiment of the present application;

FIG. 21 is a schematic structural diagram of an eighteenth aerosol generating substrate according to an embodiment of the present application;

FIG. 22 is a schematic structural diagram of a nineteenth aerosol generating substrate according to an embodiment of the present application;

FIG. 23 is a schematic structural diagram of a twentieth aerosol generating substrate according to an embodiment of the present application;

FIG. 24 is a schematic structural diagram of a twenty-first aerosol generating substrate according to an embodiment of the present application;

FIG. 25 is a schematic structural diagram of a twenty-second aerosol generating substrate according to an embodiment of the present application; and

FIG. 26 is a schematic structural diagram of a third aerosol generating product according to an embodiment of the present application.

DETAILED DESCRIPTION

In an embodiment, the present invention provides an aerosol generating substrate and an aerosol generating product to improve the release uniformity of an aerosol.
In an embodiment, the present invention provides an aerosol generating substrate, provided with an airway which penetrates through at least one end of the aerosol generating substrate in a length direction, and on the cross section perpendicular to the length direction of the aerosol generating substrate, the ratio of the total cross sectional area of the airway to the cross sectional area of the aerosol generating substrate is 5% to 95%. In some embodiments, the ratio is 40% to 85%.
In some embodiments, the airway includes an air hole which is arranged inside the aerosol generating substrate.
In some embodiments, the cross section of the air hole is circular, oval, sector, or polygonal. In some embodiments, a plurality of air holes are provided and are arranged in the aerosol generating substrate in an uniform distribution manner.
In some embodiments, a plurality of air holes are provided, all the air holes are divided into a plurality of air hole units, the plurality of air holes in the air hole units are arranged in a first direction, and the plurality of air hole units are arranged in a second direction, in which, the first direction is intersected with the second direction.
In some embodiments, the plurality of air holes in the air hole units are arranged in a straight line in the first direction, and the plurality of air hole units are arranged in a straight line in the second direction.
In some embodiments, the plurality of air holes in the air hole units are arranged in a circumferential manner in the first direction, and the plurality of air hole units are arranged by sleeving one by one in the second direction.
In some embodiments, the air holes in each of the air hole units have the same hydraulic diameter, and the hydraulic diameter of each of the air hole units gradually increases or decreases from inside to outside.
In some embodiments, partition walls between two adjacent air holes in each of the air hole units have the same thickness, and the spacing between the air hole units gradually increases or decreases from inside to outside.
In some embodiments, a plurality of air holes are provided and are arranged in the aerosol generating substrate in a non-uniform distribution manner.
In some embodiment, at least part of the air holes are different in hydraulic diameter.
In some embodiments, partition walls between at least part of two adjacent air holes are different in thickness. In some embodiments, the aerosol generating substrate includes at least one first area and at least one second area, the first areas are used for arranging the air holes, and the second areas are not provided with the air holes. In some embodiments, the airway includes a groove, and the groove is arranged in the circumferential surface of the aerosol generating substrate.
In some embodiments, the cross section of the groove is semicircular, semi-oval, or polygonal.
In some embodiments, the airway penetrates through two opposite ends of the aerosol generating substrate in the length direction. An embodiment of the present application further provides an aerosol generating product, which includes:

- any aerosol generating substrate described above;
- a functional section, arranged at one end of the aerosol generating substrate in the length direction and includes a filtering section used for filtering an aerosol; and
- an outer wrapping layer, configured to wrap a circumferential outside of the functional section and the aerosol generating substrate.

In some embodiments, the functional section further includes a cooling section which is located between the filtering section and the aerosol generating substrate.
The aerosol generating substrate provided by the embodiment of the present application is heated to generate the aerosol. Under the condition that the ratio of the total cross sectional area of the airway to the cross sectional area of the aerosol generating substrate is less than 5%, on one hand, the total cross sectional area of the airway is small, and the flow resistance of the aerosol is large, which will lead to large inhaling resistance when a user inhales, resulting in difficult inhaling; and on the other hand, the substrate mass of the aerosol generating substrate is large, which does not facilitate the penetration and/or diffusion of heat, consequently, the heating rate of the aerosol generating substrate in the heating process will be slow, the preheating time will be increased, and the heating uniformity will be poor. Under the condition that the ratio of the total cross sectional area of the airway to the cross sectional area of the aerosol generating substrate is greater than 95%, the substrate mass of the aerosol generating substrate is small, the release time of the aerosol is short, and the heat extremely easily penetrates, which will cause that the aerosol generating substrate is burnt, and the aerosol generating substrate easily releases an aerosol unevenly in the inhaling process, for example, the release amount of the aerosol at the first few inhalations is large, and the release amount of the aerosol at the last few inhalations is small, which influences the inhaling feeling of the user. The ratio of the total cross sectional area of the airway to the cross sectional area of the aerosol generating substrate is 5% to 95%, therefore, the flow resistance of the aerosol, the substrate mass, and the heating uniformity can be balanced, the phenomenon that the aerosol generating substrate is burnt and the uneven release phenomenon of the aerosol can be reduced, and the inhaling experience of the user is improved.
It is to be noted that, without conflict, the embodiments in the present application and the technical features in the embodiments may be combined with each other, and the detailed description in the specific embodiments shall be understood as an explanation of the purpose of the present application, and shall not be regarded as an undue restriction on the present application.
With reference to FIG. 4 to FIG. 25 , an embodiment of the present application provides an aerosol generating substrate 10. The aerosol generating substrate 10 is heated to generate an aerosol.
Exemplarily, the aerosol generating substrate 10 may be applicable to generating the aerosol in a heat-and-burn manner. The aerosol generating substrate 10 may also be applicable to generating the aerosol in a heat-not-burn manner. That is, the aerosol generating substrate 10 is heated to be below an ignition point to generate the aerosol. The aerosol generating substrate 10 does not burn in the process of generating the aerosol.
With continuous reference to FIG. 4 to FIG. 25 , the aerosol generating substrate 10 is provided with airways 11, and the airways 11 penetrate through at least one end of the aerosol generating substrate 10 in a length direction. The airways 11 are used for collecting and circulating the aerosol.
On the cross section perpendicular to the length direction of the aerosol generating substrate 10, the ratio of the total cross sectional area of the airways 11 to the cross sectional area of the aerosol generating substrate 10 is 5% to 95%. Exemplarily, the ratio of the total cross sectional area of the airways 11 to the cross sectional area of the aerosol generating substrate 10 is 5%, 5.5%, 6%, 8%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 71%, 72%, 75%, 77%, 80%, 83%, 84%, 85%, 88%, 90%, 91%, 93%, or 95% and the like.
The aerosol generating substrate 10 provided by the embodiment of the present application is used in an aerosol generating product. With reference to FIG. 1 to FIG. 3 , the aerosol generating product includes the aerosol generating substrate 10 in any embodiment of the present application, a functional section 20, and an outer wrapping layer 30. The functional section 20 is arranged at one end of the aerosol generating substrate 10 in the length direction, and the functional section 20 includes a filtering section 21 used for filtering the aerosol. The outer wrapping layer 30 wraps the periphery of the functional section 20 and the periphery of the aerosol generating substrate 10.
The filtering section 21 is used for filtering the aerosol generated by the aerosol generating substrate 10.
The aerosol generating product is used by a user to inhale the aerosol generated by the aerosol generating substrate 10. For example, the user can inhale the filtered aerosol by holding the filtering section 21 in the mouth. The aerosol generated by the aerosol generating substrate 10 is conveyed to the filtering section 21 through the airways 11 under inhaling negative pressure.
The aerosol generating substrate 10 provided by the embodiment of the present application is heated to generate the aerosol. Under the condition that the ratio of the total cross sectional area of the airways 11 to the cross sectional area of the aerosol generating substrate 10 is less than 5%, on one hand, the total cross sectional area of the airways 11 is small, and the flow resistance of the aerosol is large, which will lead to large inhaling resistance when the user inhales, resulting in difficult inhaling; and on the other hand, the substrate mass of the aerosol generating substrate 10 is large, which does not facilitate the penetration and/or diffusion of heat, consequently, the heating rate of the aerosol generating substrate 10 in the heating process will be slow, the preheating time will be increased, and the heating uniformity will be poor. Under the condition that the ratio of the total cross sectional area of the airways 11 to the cross sectional area of the aerosol generating substrate 10 is greater than 95%, the substrate mass of the aerosol generating substrate 10 is small, the release time of the aerosol is short, and the heat extremely easily penetrates, which will cause that the aerosol generating substrate 10 is burnt, and the aerosol generating substrate 10 easily releases the aerosol unevenly in the inhaling process, for example, the release amount of the aerosol at the first few inhalations is large, and the release amount of the aerosol at the last few inhalations is small, which influences the inhaling feeling of the user. The ratio of the total cross sectional area of the airways 11 to the cross sectional area of the aerosol generating substrate 10 is 5% to 95%, therefore, the flow resistance of the aerosol, the substrate mass, and the heating uniformity can be balanced, the phenomenon that the aerosol generating substrate is burnt and the uneven release phenomenon of the aerosol can be reduced, and the inhaling experience of the user is improved.
The aerosol generating product is used in match with an aerosol generating device that is provided with a heating assembly. Specifically, the heating assembly is used for heating to atomize the aerosol generating substrate 10 to generate the aerosol.
The heating assembly has a plurality of heating manners. Exemplarily, the heating manners include center heating, periphery heating, and/or bottom heating. The center heating manner refers to that the heating assembly is inserted into the aerosol generating product to bake and heat the aerosol generating product from inside to outside. The periphery heating manner refers to that the heating assembly is arranged at the periphery of the aerosol generating product to bake and heat the aerosol generating product from outside to inside. The bottom heating manner refers to that the heating assembly is positioned below the aerosol generating product and is used for heating air, and then hot air is used for baking and heating the aerosol generating product from bottom to top.
The heating mechanisms of the heating assembly include but are not limited to resistance heating, electromagnetic heating, infrared heating, microwave heating, or laser heating and the like.
In some embodiments, with reference to FIG. 2 , the functional section 20 may be provided with the filtering section 21 only.
In some other embodiments, with reference to FIG. 26 , the functional section 20 further includes a cooling section 22, and the cooling section 22 is located between the filtering section 21 and the aerosol generating substrate 10. The cooling section 22 is used for cooling the aerosol before the filtering section 21 filters the aerosol. The cooling section 22 can relieve the phenomenon of “the mouth is scalded” when the user inhales the aerosol.
The outer wrapping layer 30 includes but is not limited to one or a combination of more of materials such as fiber paper, metal foil, metal foil composite fiber paper, polyethylene composite fiber paper, PE (Polyethylene), and PBAT (Polybutylene Adipate Terephthalate).
The cooling materials of the cooling section 22 include but are not limited to one or a combination of more of materials such as PE (Polyethylene), PLA (Polylactic Acid), PBAT (Polybutylene Adipate Terephthalate), PP (Polypropylene), cellulose acetate fibers, and propylene fibers.
The filtering materials of the filtering section 21 include but are not limited to one or a combination of more of materials such as PE (Polyethylene), PLA (Polylactic Acid), PBAT (Polybutylene Adipate Terephthalate), PP (Polypropylene), cellulose acetate fibers, and propylene fibers.
The materials of the cooling section 22 and the filtering section 21 may be the same or different.
In some embodiments, the aerosol generating substrate 10 may be of a columnar structure approximately. That is, the aerosol generating substrate 10 is in a long strip shape approximately instead of a sheet. The size of the aerosol generating substrate 10 in the length direction is larger than the maximum distance between two points on the cross section thereof.
Exemplarily, on the cross section perpendicular to the length direction of the aerosol generating substrate 10, the shape of the cross section of the aerosol generating substrate 10 includes but is not limited to a circular shape, an oval shape, a runway shape, or a polygon shape or the like.
The cross section of the aerosol generating substrate 10 is in the above regular shape, so the product consistency is good, and the product quality is convenient to monitor. This embodiment of the present application takes the cross section of the aerosol generating substrate 10 being a circular shape as an example for illustration, that is, the aerosol generating substrate 10 is a cylinder. The size of the aerosol generating substrate 10 in the length direction is larger than the maximum distance between two points on the cross section thereof, for example, the diameter.
The specific components of the aerosol generating substrate 10 are not limited here. Exemplarily, in one embodiment, the aerosol generating substrate 10 may include components such as plants, auxiliaries, smoke producing agents, and adhesives. In one embodiment, the plants are one or a combination of more of powder arranged by crushing tobacco raw materials, tobacco fragments, tobacco stems, tobacco wastes, fragrant plants and the like. The plants are used for generating an aerosol with alkaloid when heated.
In one embodiment, the auxiliaries may be one or a combination of more of an inorganic filler, a lubricating agent, and an emulsifying agent. The inorganic filler includes one or a combination of more of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talcum powder, and kieselguhr. The inorganic filler may provide a framework support for the plants, and moreover, the inorganic filler has micro-pores, which can improve the wall material porosity after the plants are molded, thereby improving the aerosol release rate.
The lubricating agent includes one or a combination of more of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beewax, stearic acid, and palmitic acid. The lubricating agent can increase the fluidity of particles, reduce the friction force among the particles, and make the overall density of particle distribution uniform, and also can reduce the pressure for mold forming and reduce mold abrasion.
The emulsifying agent includes one or a combination of more of polyglycerol fatty acid ester, tween-80, and polyvinyl alcohol. The emulsifying agent can slow down the loss of flavor materials in the storage process to a certain extent, thus improving the stability of the flavor materials, as well as improving the sensory quality of the product.
The smoke producing agents have the effect of generating a large amount of vapor when heated, thereby increasing the smoke amount of the smoke generating product. In one embodiment, the smoke producing agents may include: one or a combination of more of monohydric alcohol (such as menthol), polyhydric alcohol (such as propylene glycol, triethylene glycol, 1,3-butanediol, and glycerinum), ester of polyhydric alcohol (such as glyceryl monoacetate, glyceryl diacetate, or glyceryl triacetate), monocarboxylic acid, polycarboxylic acid (such as lauric acid, and myristic acid) or aliphatic ester of polycarboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioiate, erythritol, 1,3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, Triactin, meso-erythritol, a glyceryl diacetate mixture, diethyl suberate, triethyl citrate, benzyl benzoate, phenyl methyl acetate, ethyl vanillin, glycerol tributyrate, and lauryl acetate).
In one embodiment, the adhesive is a natural plant extract, and is non-ionized modified viscous polysaccharide, including one or a combination of more of tamarind polysaccharide, pulullan, algal polysaccharide, locust bean gum, guar gum, and xyloglucan. The adhesive is used for bonding the particles together and making them not easy to loosen. Moreover the adhesive improves the water resistance of the aerosol generating substrate, is harmless to human bodies, and has a certain health care effect.
In one embodiment, the aerosol generating substrate 10 is of an integrally-molded structure. For example, the aerosol generating substrate 10 may be of an integrated structure arranged by processes such as injection molding, compression molding, or extrusion. The extrusion molding refers to a processing method of adding a raw material mixture into an extruder, heating and plasticizing the raw material mixture by a charging barrel and a screw of the extruder, and simultaneously, pushing the raw material mixture forward by the screw, and continuously passing through a handpiece to obtain a product or semi-product with various cross sections. The aerosol substrate arranged by the extrusion molding is strip-shaped. Therefore, the aerosol generating substrate 10 is an integrated substrate after being heated and inhaled or stopped from being heated, and is not easy to disintegrate and fall off. It solves the problems in the prior art that three aerosol generating substrates of a sheet-shaped aerosol generating substrate, a dispersed particle shaped aerosol generating substrate, and a filament shaped aerosol generating substrate are subjected to sheet loosening, and filamentous components and particular components falling off, and are not easy to clean.
In one embodiment, the ratio is 40% to 85%. Exemplarily, the ratio of the total cross sectional area of the airways 11 to the cross sectional area of the aerosol generating substrate 10 is 40%, 40.5%, 41%, 42%, 43%, 44%, 45%, 48%, 50%, 51%, 52%, 55%, 59%, 60%, 61%, 65%, 67%, 68%, 69%, 71%, 73%, 74%, 76%, 77%, 78%, 79%, 81%, 82%, 84.5%, or 85% and the like. According to this design, the total cross sectional area of the airways 11 is moderate, so the airflow flow resistance is appropriate. The substrate mass of the aerosol generating substrate 10 is appropriate, therefore the structural strength of the aerosol generating substrate 10 is good, and the overall form can be stably kept. Moreover, it can also be ensured that the aerosol release amount of the aerosol generating substrate 10 is appropriate, uniform heating and uniform release of the aerosol can be achieved, the aerosol release time is moderate, it is ensured that the inhaling frequency meets the customer demand, thus the situation that the inhaling amount is not enough or excessive waste is caused is avoided, and the inhaling experience of the user is good.
Exemplarily, in one embodiment, with reference to FIG. 24 and FIG. 25 , the airways 11 penetrate through one end of the aerosol generating substrate 10 in the length direction, and the other ends of the airways 11 are closed. In this way, the airways 11 may also play a role in temporarily storing the aerosol and accelerating aerosol precipitation. In a non-inhaling state, the aerosol will be released into the airways 11 to be stored. During inhaling, because the flow speed of the airflow at the side of the aerosol generating substrate 10 close to the lips is large, namely the air pressure is low, the aerosol stored in the airways 11 will be precipitated to the user for inhaling. Because the user has spare time, namely rest time, in the inhaling process, conditions are provided for supplementing the aerosol into the airways 11 in the spare time. If the spare time is too long, the aerosol in the airways 11 will overflow into the aerosol generating substrate 10, which ensures a uniform aerosol vector in the airways 11, and therefore the user inhaling uniformity is ensured.
It is to be noted that the side far away from the lips is the side far away from the lips of the user, and the side close to the lips is opposite to the side far away from the lips. In some embodiments, with reference to FIG. 2 , and FIG. 4 to FIG. 23 , the airways 11 penetrate through two opposite ends of the aerosol generating substrate 10 in the length direction. The airflow can flow from one end of the aerosol generating substrate 10 to the other end of the aerosol generating substrate 10. In this way, the airflow arranged by air carrying the aerosol can flow more smoothly, the flow resistance of the airflow is reduced, the inhaling resistance in the inhaling process can be remarkably reduced, and the inhaling experience is improved.
In some embodiments, with reference to FIG. 24 , all the airways 11 penetrate through the same end of the aerosol generating substrate 10 in the length direction, and the other ends are closed. That is, all air holes 111 and/or grooves 112 are opened towards the same end.
In some other embodiments, with reference to FIG. 25 , part of the airways 11 penetrate through one end of the aerosol generating substrate 10 in the length direction, and the other part of the airways 11 penetrate through the other end of the aerosol generating substrate 10 in the length direction.
In yet some other embodiments, with reference to FIG. 4 to FIG. 23 , each airway 11 penetrates through the two opposite ends of the aerosol generating substrate 10 in the length direction, and the airflow can flow from one end of the aerosol generating substrate 10 in the length direction to the other end of the aerosol generating substrate 10 in the length direction through the airways 11.
In one embodiment, with reference to FIG. 4 to FIG. 19 , the airways 11 include the air holes 111, and the air holes 111 are arranged inside the aerosol generating substrate 10. Exemplarily, the air holes 111 may be through holes which penetrate through the two opposite ends of the aerosol generating substrate 10 in the length direction. The air holes 111 are surrounded by the circumferential surface of the aerosol generating substrate 10.
The air holes 111 may collect the aerosol and play a good role in airflow guiding.
It is to be understood that the air holes 111 may also only penetrate through one end of the aerosol generating substrate 10.
Exemplarily, the cross section area of the air holes 111 is 0.0019 mm²to 30 mm²(square millimeter), for example, 0.002 mm², 0.1 mm², 0.2 mm², 0.4 mm², 0.5 mm², 0.8 mm², 1 mm², 1.3 mm², 1.6 mm², 1.8 mm², 2 mm², 2.1 mm², 2.2 mm², 2.4 mm², 2.6 mm², 2.8 mm², 3 mm², 4 mm², 5 mm², or 6 mm².
In this embodiment of the present application, the cross section area refers to the flow section area.
When the cross section area of the air holes 111 is greater than 30 mm², the number of the air holes 111 is relatively small, thus the aerosol generating substrate 10 is easily burnt, and the aerosol generating substrate 10 is prone to unevenly releasing the aerosol in the heating process (for example, the release amount of the first two inhalations is large, and the aerosol release amount of the last few inhalations is small), which influences the inhaling feeling of the user.
When the cross section area of the air holes 111 is smaller than 0.0019 mm², the molding process difficulty will be remarkably increased, the size of the air holes 111 is not easy to control, and the defective product rate of the aerosol generating substrate 10 will be increased.
When the cross section area of the air holes 111 is within the range of 0.0019 mm²to 30 mm², the flow resistance of the aerosol generating substrate 10 is relatively small (namely, the inhaling resistance is relatively small), and the flow speed of the aerosol is appropriate, so that the aerosol in the aerosol generating substrate 10 is easy to extract, the aerosol is uniformly released and high in utilization rate, the aerosol generating substrate 10 is not easily burnt, the use experience of the user is relatively high, and processing and manufacturing are facilitated.
Preferably, the cross section area of the air holes 111 is 0.007 mm²to 7.1 mm²(square millimeter). For example, 0.1 mm², 0.2 mm², 0.4 mm², 0.5 mm², 0.8 mm², 1 mm², 1.3 mm², 1.6 mm², 1.8 mm², 2 mm², 2.1 mm², 2.2 mm², 2.4 mm², 2.6 mm², 2.8 mm², or 3 mm².
Exemplarily, the hydraulic diameter of the air holes 111 is 0.05 mm to 6 mm (millimeter), for example, 0.05 mm, 0.1 mm, 0.2 mm, 0.4 mm, 0.5 mm, 0.8 mm, 1 mm, 1.3 mm, 1.6 mm, 1.8 mm, 2 mm, 2.1 mm, 2.2 mm, 2.4 mm, 2.6 mm, 2.8 mm, 3 mm, 4 mm, 5 mm, or 6 mm.
In this embodiment of the present application, the hydraulic diameter refers to the ratio of four times of the flow section area to the perimeter. The flow section refers to a section perpendicular to a flow line cluster of fluid, namely the cross section of the air holes 111. For example, if the cross section of the air holes 111 is in a regular quadrangle shape, the hydraulic diameter is the ratio of four times of the cross section area of the air holes 111 in the regular quadrangle shape to the perimeter of the regular quadrangle shape. For another example, if the cross section of the air holes 111 is circular, the hydraulic diameter is the diameter of the circular air holes 111.
When the hydraulic diameter of the air holes 111 is larger than 6 mm, the number of the air holes 111 is relatively small, an aerosol generating substrate 10 is prone to being burnt, and the aerosol generating substrate 10 is prone to unevenly release the aerosol in the heating process (for example, the release amount of the first two inhalations is large, and the aerosol release amount of the last few inhalations is small), which influences the inhaling feeling of the user.
When the hydraulic diameter of the air holes 111 is smaller than 0.05 mm, the molding process difficulty will be remarkably increased, and the size of the air holes 111 is not prone to being controlled, which will increase the defective product rate of the aerosol generating substrate 10.
When the hydraulic diameter of the air holes 111 is within the range of 0.05 mm to 6 mm, the flow resistance of the aerosol generating substrate 10 is relatively small (namely, the inhaling resistance is relatively small), and the flow speed of the aerosol is appropriate, so that the aerosol in the aerosol generating substrate 10 is easy to extract, the aerosol is released evenly and high in utilization rate, the aerosol generating substrate 10 is not prone to being burnt, the use experience of the user is relatively high, and the machining and manufacturing are facilitated.
In some embodiments, the hydraulic diameter of the air holes 111 is 0.1 mm to 3 mm (millimeter), for example, 0.1 mm, 0.2 mm, 0.4 mm, 0.5 mm, 0.8 mm, 1 mm, 1.3 mm, 1.6 mm, 1.8 mm, 2 mm, 2.1 mm, 2.2 mm, 2.4 mm, 2.6 mm, 2.8 mm, and 3 mm.
In one embodiment, with reference to FIG. 20 to FIG. 23 , the airways 11 include the grooves 112, and the grooves 112 are arranged in the circumferential surface of the aerosol generating substrate 10. Exemplarily, the grooves 112 may penetrate through the two opposite ends of the aerosol generating substrate 10 in the length direction. Specifically, the grooves 112 are provided with notches which are outwards opened. Exemplarily, part of the area on the circumferential surface of the aerosol generating substrate 10 is sunken to form the grooves 112, equivalently, the grooves 112 may be observed from the circumferential surface of the aerosol generating substrate 10. On one hand, the grooves 112 can increase the outer surface area of the aerosol generating substrate 10, thus improving the heat conduction efficiency and facilitating the extraction of effective components. Exemplarily, if the heating manner is periphery heating, the overall heating rate of the aerosol generating substrate 10 may be adjusted in this way, thereby improving the use experience of a consumer. On the other hand, exemplarily, the periphery of the aerosol generating substrate 10 is wrapped with the outer wrapping layer 30, and the outer wrapping layer 30 may seal the notches of the grooves 112. For example, the outer wrapping layer 30 and the grooves 112 are matched to form a through hole which is opened along the two opposite ends in the length direction of the aerosol generating substrate 10, thus the airflow guide effect of limiting the aerosol and outside air to flow in the length direction is achieved, the air inlet amount can be increased, and the aerosol extraction efficiency can be improved.
In some embodiments, with reference to FIG. 4 to FIG. 6 , the airways 11 may include only one air hole 111. The total cross sectional area of the airways 11 is the cross sectional area of one air hole 111.
In some other embodiments, with reference to FIG. 7 to FIG. 19 , the airways 11 may include a plurality of air holes 111 and exclude the grooves 112. The total cross sectional area of the airways 11 is the total cross sectional area of the plurality of air holes 111. That is, the total cross sectional area of the airways 11 is the sum of the cross sectional area of the plurality of air holes 111.
In yet some other embodiments, with reference to FIG. 21 to FIG. 23 , the airways 11 may include at least one air hole 111 and at least one groove 112. The total cross sectional area of the airways 11 is the sum of the cross sectional area of all the air holes 111 and the cross sectional area of all the grooves 112.
In still yet some other embodiments, with reference to FIG. 20 , the airways 11 may include at least one groove 112 and exclude the air holes 111. The total cross sectional area of the airways 11 is the sum of the cross sectional area of all the grooves 112. That is, the total cross sectional area of the airways 11 is the sum of the cross sectional area of all the grooves 112.
In one embodiment, with reference to FIG. 4 to FIG. 19 , the cross section of the air holes 111 is circular, oval, sector, or polygonal. The polygon shape includes but is not limited to a triangle, a quadrangle, a pentagon, or a hexagon and the like. The quadrangle may be a regular quadrangle or a rhombus and the like. The cross section of the air holes 111 is in a regular shape, so the product consistency is good, and the product quality is convenient to monitor.
In one embodiment, with reference to FIG. 20 to FIG. 23 , the cross section of the grooves 112 is semicircular, semi-oval, or polygonal. The polygon shape includes but is not limited to a triangle, a quadrangle, a pentagon, or a hexagon and the like. The quadrangle may be a regular quadrangle or a rhombus and the like. The cross section of the grooves 112 is in a regular shape, so the product consistency is good, and the product quality is convenient to monitor.
In some embodiments, with reference to FIG. 2 , the air holes 111 may be straight holes. That is, each of the air holes 111 extends in a straight line in the length direction of the aerosol generating substrate 10. Thus, the air holes 111 are easy to mold, and are low in manufacturing difficulty.
In some embodiments, with reference to FIG. 2 , the air holes 111 at any position in the length direction of the aerosol generating substrate 10 have the same the cross sectional area. For example, if the cross section of the air hole 111 is circular, the air holes 111 at any position in the length direction of the aerosol generating substrate 10 have the same diameter, that is, the air holes 111 are equal-diameter holes.
In some embodiments, with reference to FIG. 20 to FIG. 23 , each of the grooves 112 may extend in a straight line in the length direction of the aerosol generating substrate 10. In this way, the grooves 112 are easy to mold, and low in manufacturing difficulty.
In some embodiments, with reference to FIG. 20 to FIG. 23 , the grooves 112 at any position in the length direction of the aerosol generating substrate 10 have the same cross sectional area.
It is to be noted that, unless otherwise particularly specified, the length direction refers to the length direction of the aerosol generating substrate 10.
In one embodiment, with reference to FIG. 7 , FIG. 10 , and FIG. 15 , a plurality of air holes 111 are provided, and the plurality of air holes 111 are arranged in the aerosol generating substrate 10 in a uniform distribution manner. By means of the design, different parts of the aerosol generating substrate 10 almost have the same substrate mass distribution, and the air holes 111 in different parts of the aerosol generating substrate 10 almost have the same cross sectional area, thus the aerosols in different parts of the aerosol generating substrate 10 almost have a consistent release amount and flow resistance. Then the release uniformity of the aerosol in the inhaling process can be improved, the inhaling amount of each inhalation is almost consistent in the inhaling process. Therefore, the inhaling consistency is improved, and the inhaling experience is good.
The uniform distribution implementation manner of the air holes 111 is not limited. Exemplarily, in some embodiments, with reference to FIG. 7 , FIG. 10 , and FIG. 15 , the uniform distribution manners of the air holes 111 are as follows: the air holes 111 are consistent in cross sectional area, and the partition walls of adjacent air holes 111 are consistent in thickness. For example, the air holes 111 have the same cross sectional area, and the air holes 111 are distributed in a matrix manner or a concentric circle manner. That is, the air holes 111 are subjected to a uniform arrangement manner.
It is to be understood that the air holes 111 may be uneven in the cross section of the aerosol generating substrate 10. That is, the air holes 111 are uniformly distributed, but the air holes 111 do not uniformly divide the whole aerosol generating substrate 10. For example, if the cross section of the aerosol generating substrate 10 is circular, the air holes 111 in matrix distribution are not uniformly distributed in the circular cross section.
The implementation manner of the consistent cross sectional area of the air holes 111 may be that: the cross sections of the air holes 111 have the same shape and have the same hydraulic diameter. For example, the cross sections of the air holes 111 are circular and have the same diameters.
The distribution manner of the plurality of air holes 111 is not limited. Exemplarily, in one embodiment, with reference to FIG. 7 to FIG. 23 , the plurality of air holes 111 are provided. All the air holes 111 are divided into a plurality of air hole units. The plurality of air holes 111 in the air hole units are arranged in the first direction. The plurality of air hole units are arranged in the second direction. The first direction is intersected with the second direction. Thus, all the air holes 111 are arranged in a two-dimensional manner, which ensures both the structural strength and the aerosol release amount of the aerosol generating substrate 10.
In one embodiment, with reference to FIG. 7 to FIG. 14 , and FIG. 21 to FIG. 23 , the plurality of air holes 111 in the air hole units are arranged in a straight line in the first direction, and the plurality of air hole units are arranged in a straight line in the second direction. For example, the distribution manner of all the air holes 111 is matrix distribution or grid distribution. Thus, all the air holes 111 are arranged in an ordered manner, the total cross sectional area of the air holes 111 is convenient to design and calculate, and therefore the total cross sectional area of the airways 11 is controlled.
It is to be understood that the ordered arrangement refers to arrangement according to a set rule.
In one embodiment, with reference to FIG. 15 to FIG. 19 , the plurality of air holes 111 in the air hole units are arranged in a circumferential manner in the first direction, and the plurality of air hole units are arranged by sleeving one by one in the second direction. That is, all the air holes 111 are distributed in a form of a plurality of sleeved rings. For example, each ring may be a circular ring, and the centers of a plurality of circular rings are overlapped or not overlapped. If the centers of the plurality of circular rings are overlapped, the distribution in the form of the plurality of sleeved rings is the distribution in a form of a plurality of concentric circles. Thus, all the air holes 111 are arranged in an ordered manner, the total cross sectional area of the air holes 111 is convenient to design and calculate, and therefore the total cross sectional area of the airways 11 is controlled. For example, by adjusting the spacing between different circular rings and/or the number of the air holes 111 in the same circular ring, the substrate mass distribution of the aerosol generating substrate 10, the heating rate of different parts, and/or the flow resistance of the aerosol can be adjusted, thereby improving the inhaling experience of the user.
In one embodiment, with reference to FIG. 15 to FIG. 19 , all the air holes 111 are distributed in the form of the plurality of sleeved rings, and the air holes 111 in two adjacent air hole units are distributed in a staggered manner. That is, in two adjacent air hole units, each air hole 111 in one air hole unit is located between two adjacent air holes 111 in the other air hole unit. In this way, under the condition that the size of the aerosol generating substrate 10 is limited, the thickness of the partition walls between the air holes 111 in two adjacent air hole units is moderate. The thickness of the partition walls is not too small or too large. The release amount of the aerosol is uniform and the aerosol is stably released into the air holes 111. Thus the phenomenon that the release amount of the aerosols at different parts of the aerosol generating substrate 10 is inconsistent is avoided.
In some embodiments, with reference to FIG. 7 and FIG. 9 , the air holes 111 in each air hole unit may be the same in number.
Exemplarily, in one embodiment, with reference to FIG. 7 , taking matrix distribution as an example, there are three air holes 111 in each air hole unit, there are also three air hole units, and thus there are nine air holes 111 in total. The three air holes 111 in the air hole unit are linearly arranged in the first direction, and the three air hole units are linearly arranged in the second direction. Further, the nine air holes 111 have the same cross section shape and the same cross sectional area, and the partition walls between any two adjacent air holes 111 have the same thickness. In this way, the nine air holes 111 are arranged in the aerosol generating substrate 10 in a uniform distribution manner, thus the aerosol can be uniformly released into the air holes 111, and the release of each air hole 111 is uniform and stable.
In some embodiments, with reference to FIG. 8 , and FIG. 10 to FIG. 14 , the air holes 111 in at least a part of the air hole units may be different in number.
Exemplarily, in one embodiment, with reference to FIG. 10 to FIG. 14 , the air holes 111 in a part of the air hole units may be the same in number, and the air holes 111 in the other part of the air hole units may be different in number. In another embodiment, the air holes 111 in all the air hole units are different in number. That is, the air holes 111 in each air hole unit are different in number.
In one embodiment, with reference to FIG. 10 , the plurality of air holes 111 in the air hole units are arranged in a straight line in the first direction, the plurality of air hole units are arranged in a straight line in the second direction, and in the second direction, the number of the air holes 111 in the air hole units decreases from the middle to both sides in an arithmetic progression. That is, the plurality of air hole units are axially symmetrically distributed in the second direction.
Exemplarily, in one embodiment, with reference to FIG. 10 , taking grid distribution as an example, there are five air hole units, the five air hole units are arranged in a straight line in the second direction, and the number of the air holes 111 in the air hole units in the second direction gradually decreases from five to three from the middle to two sides. That is, there are five air holes 111 in the air hole unit in the middle, there are four air holes 111 in each of the two air hole units adjacent to the middle air hole unit, and there are three air holes 111 in each of the two air hole units on the outermost side.
In one embodiment, with reference to FIG. 15 , the plurality of air holes 111 in the air hole units are arranged in a circumferential manner in the first direction, and the number of the air holes 111 in the plurality of air hole units increases from inside to outside in the second direction according to an arithmetic progression.
Exemplarily, in one embodiment, with reference to FIG. 15 , taking distribution in the form of the plurality of sleeved rings as an example, there are two air hole units. There are eight air holes 111 in the air hole unit on the inner side in the second direction. There are twelve air holes 111 in the air hole unit on the outer side in the second direction.
In some embodiments, with reference to FIG. 16 , the air holes 111 in each of the air hole units have the same hydraulic diameter, and the hydraulic diameter of each of the air hole units gradually increases or decreases from inside to outside. In this way, the aerosol generating substrate 10 may be suitable for different heating manners.
Exemplarily, in one embodiment, the air holes 111 in each of the air hole units have the same hydraulic diameter, and the hydraulic diameter of each of the air hole units gradually increases from inside to outside. Thus, the aerosol generating substrate 10 is suitable for the center heating manner. The reason is that the substrate mass of the area on the inner side of the aerosol generating substrate 10 is large, the substrate mass of the area on the outer side of the aerosol generating substrate is small, and the time for conducting heat from inside to outside is long, so the time for heating the area on the outer side can be prolonged, the overall uniformity of aerosol release is improved, the inhaling duration and/or the number of inhalations are/is increased, and the release consistency of the aerosol can be kept.
Exemplarily, in another embodiment, with reference to FIG. 17 , the air holes 111 in each of the air hole units have the same hydraulic diameter, and the hydraulic diameter of each of the air hole units gradually decreases from inside to outside. Thus, the aerosol generating substrate 10 is suitable for the periphery heating manner. The reason is that the substrate mass of the area on the outer side of the aerosol generating substrate 10 is large, the substrate mass of the area on the inner side of the aerosol generating substrate is small, and the time for conducting heat from outside to inside is long, so the time for heating the area on inner side can be prolonged, the overall uniformity of aerosol release is improved, the inhaling duration and/or the number of inhalations are/is increased, and the release consistency of the aerosol can be kept.
In some embodiments, with reference to FIG. 18 and FIG. 19 , the partition walls between two adjacent air holes 111 in each of the air hole units have the same thickness, and the spacing between the air hole units gradually increases or decreases from inside to outside. In this way, the aerosol generating substrate 10 may be suitable for different heating manners.
It is to be understood that the spacing refers to the minimum distance between two adjacent air hole units.
Exemplarily, in one embodiment, with reference to FIG. 18 , the partition walls between two adjacent air holes 111 in each of the air hole units have the same thicknesses, and the spacing between the air hole units gradually increases from inside to outside. Thus, the aerosol generating substrate 10 is suitable for the periphery heating manner. The reason is that the substrate mass of the area on the outer side of the aerosol generating substrate 10 is large, the substrate mass of the area on the inner side of the aerosol generating substrate is small, and the time for conducting heat from outside to inside is long, so the time for heating the area on inner side can be prolonged, the overall uniformity of aerosol release is improved, the inhaling duration and/or the number of inhalations are/is increased, and the release consistency of the aerosol can be kept.
Exemplarily, in another embodiment, with reference to FIG. 19 , the partition walls between two adjacent air holes 111 in each of the air hole units have the same thickness, and the spacing between the air hole units gradually decreases from inside to outside. Thus, the aerosol generating substrate 10 is suitable for the center heating manner. The reason is that the substrate mass of the area on the inner side of the aerosol generating substrate 10 is large, the substrate mass of the area on the outer side of the aerosol generating substrate is small, and the time for conducting heat from inside to outside is long, so the time for heating the area on the outer side can be prolonged, the overall uniformity of aerosol release is improved, the inhaling duration and/or the number of inhalations are/is increased, and the release consistency of the aerosol can be kept.
In one embodiment, with reference to FIG. 16 to FIG. 19 , the plurality of the air holes 111 are provided, and the air holes 111 are arranged in the aerosol generating substrate 10 in a non-uniform distribution manner. The air holes 111 in the non-uniform distribution can be matched with different heating manners, so that uniform heating of the aerosol generating substrate 10 can be realized, and the consistency of the aerosol at the beginning and the end of inhalations in the inhaling process can be realized.
The implementation manner of the non-uniform distribution of the air holes 111 is not limited. Exemplarily, in some embodiments, with reference to FIG. 8 , FIG. 16 , and FIG. 17 , at least part of the air holes 111 are different in hydraulic diameter. That is, part of the air holes 111 are different in hydraulic diameter. Or, all the air holes 111 are different in hydraulic diameter.
Therefore, the cross sectional area of the air holes 111 can be adjusted by adjusting the hydraulic diameter of the air holes 111, so as to implement the non-uniform distribution of the air holes 111.
In some embodiments, with reference to FIG. 18 and FIG. 19 , the partition walls between at least part of two adjacent air holes 111 are different in thickness. Therefore, the non-uniform distribution can be implemented by adjusting the thicknesses of the partition walls between the two adjacent air holes 111.
In some embodiments, the aerosol generating substrate 10 includes at least one first area and at least one second area. The first areas are used for arranging the air holes 111, and the second areas are not provided with the air holes 111. Therefore, the uniform distribution or non-uniform distribution of the air holes 111 can be realized by distributing the air holes 111 in a partitioned manner.
In another embodiment, the middle part is divided into at least one first area and at least one second area. The first area and the second area have the same cross sectional area and are distributed in an axial symmetry manner. The plurality of air holes 111 in the first area are uniformly or non-uniformly distributed. Therefore, the non-uniform distribution of all the air holes 111 can be realized.
In some embodiments, the aerosol generating substrate 10 is provided with a plurality of micro-pores. Specifically, the plurality of micro-pores are in communication with one another and are in communication with the surface of a material. For example, the plurality of micro-pores are in communication with one another and are in communication with the surfaces of the air holes 111. The plurality of micro-pores are in communication with one another and are in communication with the circumferential surface of the aerosol generating substrate 10. That is, the plurality of micro-pores can be in communication with the airways 11. The micro-pores have a capillary function, and can guide the aerosol into the airways 11 through the capillary function. The aerosol generated by the aerosol generating substrate 10 may overflow into the airways 11 through the micro-pores and is collected through the airways 11. Therefore, the utilization rate of effective components of the aerosol generating substrate 10 can be improved.
It is to be noted that the airway 11 belongs to a hole or a groove macroscopically, the micro-pore belongs to a hole or a groove microscopically, and the cross sectional area of each airway 11 is much larger than that of the micro-pore.
Exemplarily, the cross sectional area of each airway 11 is at least 20 times that of the micro-pore. Under the condition that the size of the micro-pore is approximately kept unchanged, when the cross sectional area of each airway is smaller than 20 times that of the micro-pore, the size of the airway 11 will be too small, the aerosol is not prone to being released into the airway 11 from the inner wall of the airway 11, consequently, the inhaling resistance of the user will be large, and the inhaling feeling of the user will be reduced. Therefore, in this embodiment, when the cross sectional area of each airway 11 is larger than or equal to 20 times that of the micro-pore, the speed of releasing the aerosol from the inner wall of the airway 11 can be guaranteed, the inhaling resistance can be reduced, and the inhaling experience feeling of the user is improved.
In some embodiments, the cross sectional area of each airway 11 is 20-60,000 times that of the micro-pore. If the cross sectional area of each airway 11 is larger than 60,000 times that of the micro-pore, the area of the airway 11 will be too large, the overall quality of a smoke generating substrate will be reduced, the substrate utilization rate is low, the heating speed will be high, and the aerosol is prone to being released into the environment through the micro-pore.
Exemplarily, the cross sectional area of each airway 11 is 100-40,000 times that of the micro-pore. Exemplarily, the cross sectional area of the micro-pore ranges from 0.7 nm²(square nanometer) to 710 μm²(square micrometer),

- for example, 1 nm², 10 nm², 25 nm², 30 nm², 40 nm², 50 nm², 60 nm², 70 nm², 80 nm², 100 nm², 200 nm², 300 nm², 400 nm², 500 nm², 600 nm², 700 nm², 800 nm², 900 nm², 1 μm², 2 μm², and 3 μm².

When the cross sectional area of the micro-pore is less than 0.7 nm², effective components in the substrate do not volatilize and enter the air holes 111 easily, and as a result, the utilization rate of the substrate will be reduced. When the cross sectional area of the micro-pore of a substrate body is larger than 710 μm², heat conduction in the micro-pore will not be uniform, and as a result, the inhaling experience will be reduced. Therefore, in the embodiment, the cross sectional area of the micro-pore is controlled to be 0.7 nm²-710 μm², so that the utilization rate of the substrate is ensured, and the inhaling experience is improved.
More preferably, the cross sectional area of the micro-pore is 1963 nm²to 20 μm².
Exemplarily, the hydraulic diameter of the micro-pore is 10 nm (nanometer) to 30 μm (micrometer), for example, 10 nm, 20 nm, 24 nm, 30 nm, 40 nm, 50 nm, 60 nm, 70 nm, 80 nm, 100 nm, 200 nm, 300 nm, 400 nm, 500 nm, 600 nm, 700 nm, 800 nm, 900 nm, 1 μm, 2 μm, and 3 μm.
When the hydraulic diameter of the micro-pore is less than 10 nm, the effective components in the substrate do not volatilize and enter the air holes 111 easily, and as a result, the utilization rate of the substrate will be reduced. When the diameter of the micro-pore is larger than 30 μm, the heat conduction in the micro-pore will not be uniform, and as a result, the inhaling experience will be reduced. Therefore, in this embodiment, the hydraulic diameter of the micro-pore is controlled to be 0.1 nm to 30 μm, thus the utilization rate of the substrate is ensured, and the inhaling experience is improved. It is to be understood that the plurality of micro-pores may be arranged in a disordered manner. Namely, the micro-pores are randomly generated. The plurality of micro-pores are arranged in a disordered manner. The disordered arrangement means that no rule is set. For example, the forming position of the micro-pores basically cannot be manually and accurately controlled in the micro-pore forming process.
While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive. It will be understood that changes and modifications may be made by those of ordinary skill within the scope of the following claims. In particular, the present invention covers further embodiments with any combination of features from different embodiments described above and below. Additionally, statements made herein characterizing the invention refer to an embodiment of the invention and not necessarily all embodiments.
The terms used in the claims should be construed to have the broadest reasonable interpretation consistent with the foregoing description. For example, the use of the article “a” or “the” in introducing an element should not be interpreted as being exclusive of a plurality of elements. Likewise, the recitation of “or” should be interpreted as being inclusive, such that the recitation of “A or B” is not exclusive of “A and B,” unless it is clear from the context or the foregoing description that only one of A and B is intended. Further, the recitation of “at least one of A, B and C” should be interpreted as one or more of a group of elements consisting of A, B and C, and should not be interpreted as requiring at least one of each of the listed elements A, B and C, regardless of whether A, B and C are related as categories or otherwise. Moreover, the recitation of “A, B and/or C” or “at least one of A, B or C” should be interpreted as including any singular entity from the listed elements, e.g., A, any subset from the listed elements, e.g., A and B, or the entire list of elements A, B and C.

Claims

What is claimed is:

1. An aerosol generating substrate, comprising:

an airway that penetrates through at least one end of the aerosol generating substrate in a length direction,

wherein, on a cross section perpendicular to the length direction of the aerosol generating substrate, a ratio of the total cross sectional area of the airway to a cross sectional area of the aerosol generating substrate is 5% to 95%.

2. The aerosol generating substrate of claim 1, wherein the ratio is 40% to 85%.

3. The aerosol generating substrate of claim 1, wherein the airway comprises at least one air hole arranged inside the aerosol generating substrate.

4. The aerosol generating substrate of claim 3, wherein a cross section of the at least one air hole is circular, oval, sector, or polygonal.

5. The aerosol generating substrate of claim 3, wherein the at least one air hole comprises a plurality of air holes, and

wherein plurality of air holes are arranged in the aerosol generating substrate in a uniform distribution.

6. The aerosol generating substrate of claim 3, wherein the at least one air hole comprises a plurality of air holes,

wherein all air holes of the plurality of air holes are divided into a plurality of air hole units,

wherein the plurality of air holes in the plurality of air hole units are arranged in a first direction, and

wherein the plurality of air hole units are arranged in a second direction that intersects the first direction.

7. The aerosol generating substrate of claim 6, wherein the plurality of air holes are arranged in a straight line in the first direction, and

wherein the plurality of air hole units are arranged in a straight line in the second direction.

8. The aerosol generating substrate of claim 6, wherein the plurality of air holes are arranged circumferentially in the first direction, and

wherein the plurality of air hole units are arranged so as to be sleeved one by one in the second direction.

9. The aerosol generating substrate of claim 8, wherein air holes in each air hole unit of the plurality of air hole units have a same hydraulic diameter, and

wherein the hydraulic diameter of each of the air hole units increases or decreases from inside to outside.

10. The aerosol generating substrate of claim 8, wherein partition walls between two adjacent air holes of the plurality of air holes in each air hole unit of the plurality of air hole units have a same thickness, and

wherein a spacing between the air hole units increases or decreases from inside to outside.

11. The aerosol generating substrate of claim 3, wherein the at least one airhole comprises a plurality of air holes,

wherein the plurality of air holes are arranged in the aerosol generating substrate in a non-uniform distribution.

12. The aerosol generating substrate of claim 11, wherein at least some air holes of the plurality of air holes are different in hydraulic diameter.

13. The aerosol generating substrate of claim 11, further comprising:

partition walls between at least some of two adjacent air holes of the plurality of air holes,

wherein the partition walls are different in thickness.

14. The aerosol generating substrate of claim 3, further comprising:

at least one first area; and

at least one second area,

wherein the at least one first are is configured for arranging the at least one air hole, and

wherein the at least one second area is not provided with the at least one air hole.

15. The aerosol generating substrate of claim 1, wherein the airway comprises a groove, and

wherein the groove is arranged in a circumferential surface of the aerosol generating substrate.

16. The aerosol generating substrate of claim 15, wherein a cross section of the groove is semicircular, semi-oval, or polygonal.

17. The aerosol generating substrate of claim 1, wherein the airway penetrates through two opposite ends of the aerosol generating substrate in the length direction.

18. An aerosol generating product, comprising:

the aerosol generating substrate of claim 1;

a functional section, arranged at one end of the aerosol generating substrate in the length direction and includes a filtering section used for filtering an aerosol; and

an outer wrapping layer, configured to wrap a circumferential outside of the functional section and the aerosol generating substrate.

19. The aerosol generating product of claim 18, wherein the functional section comprises a cooling section located between the filtering section and the aerosol generating substrate.