CN119366689A - An aerosol generating product - Google Patents

Abstract

The application relates to the technical field of aerosol generation, and provides an aerosol generating product, which comprises an aerosol generating substrate section, a functional section and a wrapping layer, wherein the functional section comprises a cooling section, a supporting section and a filtering section, and the aerosol generating substrate section, the supporting section, the cooling section and the filtering section are sequentially arranged along the longitudinal direction; the wrapping layer wraps the periphery of the aerosol generating substrate section and the periphery of the functional section, and a side hole is formed at the position of the wrapping layer between the aerosol generating substrate section and the filtering section. The side hole is positioned between the aerosol generating substrate section and the filtering section, the side hole introduces external airflow into the aerosol generating product, so that aerosol buffered between the aerosol generating substrate section and the filtering section can quickly flow to the filtering section, the aerosol extraction efficiency and the aerosol release stability are improved, the suction experience is improved, and the temperature of the aerosol can be reduced by mixing and contacting the external airflow and the aerosol.

Description

Aerosol-generating article

Technical Field

The present application relates to the field of aerosol-generating technology, in particular to an aerosol-generating article.

Background

This section is intended to provide a background or context for embodiments of the application. The description herein is not admitted to be prior art by inclusion in this section.

The aerosol-generating substrate segments may form an aerosol by ignition or by heating without combustion. Taking the example of a heated but not combusted aerosol-generating substrate segment, the aerosol-generating substrate segment is heated by an external heat source such that the aerosol-generating substrate segment is just heated to a level sufficient to emit aerosol, the aerosol-generating substrate segment does not combust, and in use the aerosol is released by heating the aerosol-generating substrate segment.

In the related art, the aerosol temperature released by the aerosol generating substrate section is higher, and a mouth scalding phenomenon exists when a user sucks the aerosol.

Disclosure of Invention

In view of the foregoing, it is desirable to provide an aerosol-generating article capable of reducing the temperature of an aerosol.

To achieve the above object, an embodiment of the present application provides an aerosol-generating article comprising:

An aerosol-generating substrate segment formed with an airway passing through at least one end face of the aerosol-generating substrate segment in a longitudinal direction;

the functional section comprises a cooling section, a supporting section and a filtering section, wherein the aerosol generating substrate section, the supporting section, the cooling section and the filtering section are sequentially arranged along the longitudinal direction;

And the wrapping layer wraps the periphery of the aerosol generating substrate section and the periphery of the functional section, and a side hole is formed at the position of the wrapping layer between the aerosol generating substrate section and the filtering section.

In some embodiments, at least one of the outer peripheral surface of the cooling section and the outer peripheral surface of the support section is formed with a vent hole, which is aligned with and communicates with the side hole.

In some embodiments, at least one of the cooling section and the support section is formed with a hollow passage passing through both end surfaces in the longitudinal direction.

In some embodiments, the hydraulic diameter of the hollow channel of the support section is no greater than the hydraulic diameter of the hollow channel of the cooling section.

In some embodiments, a vent hole is formed at a position where the outer peripheral surface of the cooling section and the outer peripheral surface of the supporting section are aligned with the side hole, and the vent hole is communicated with the side hole and the hollow channel.

In some embodiments, at least one of the cooling section and the support section is formed with a side passage passing through both end faces in the longitudinal direction, the side passage being located laterally outside the hollow passage.

In some embodiments, a flavoring substance is disposed within the side channel.

In some embodiments, the number of the side channels is plural, and the plurality of side channels are spaced around the periphery of the hollow channel.

In some embodiments, the aerosol-generating substrate section, the cooling section, the supporting section and the filtering section are all cylindrical structures with the same outer diameter, central axes of the aerosol-generating substrate section, the cooling section, the supporting section and the filtering section are all overlapped along the longitudinal direction, the cooling section is formed with a hollow channel penetrating through two end faces along the longitudinal direction, a plane perpendicular to the longitudinal direction is taken as a projection plane, and the projection of the hollow channel of the cooling section is round.

In some embodiments, the support section is formed with a hollow passage passing through both end surfaces in the longitudinal direction, and the hydraulic diameter of the hollow passage of the support section is equal to the hydraulic diameter of the hollow passage of the cooling section.

In some embodiments, the filter segment is formed with a resistance-reducing passage through at least one end in the longitudinal direction.

In some embodiments, the wrapping layer encloses a hollow space to form a cavity, and the wall surface of the wrapping layer enclosing the cavity is provided with the side hole;

The cavity is arranged between the filtering section and the cooling section, and/or the cavity is arranged between the cooling section and the supporting section.

In some embodiments, the side hole has a hydraulic diameter of 0.1mm to 0.7mm.

In some embodiments, the number of the side holes is plural, and the plural side holes are arranged at intervals along the circumferential direction to form an air inlet group.

In some embodiments, the number of intake groups is 1 to 7, and/or,

The number of side holes in each of the intake groups is 2 to 16.

In some embodiments, the number of the air inlet groups is a plurality, the plurality of air inlet groups are arranged at intervals along the longitudinal direction, and the distance between two adjacent air inlet groups is not less than 0.5mm.

According to the aerosol generating product provided by the embodiment of the application, on one hand, aerosol generated by the aerosol generating substrate section sequentially flows through the supporting section, the cooling section and the filtering section, the flow path of the aerosol can be prolonged through the multi-section structure, the temperature of the aerosol is reduced step by step, and the problem of 'mouth scalding' in the suction process is solved. On the other hand, the side hole is positioned between the aerosol generating substrate section and the filtering section, and introduces external airflow into the aerosol generating product, so that aerosol buffered between the aerosol generating substrate section and the filtering section can quickly flow to the filtering section, the aerosol extraction efficiency and the aerosol release stability are improved, the suction experience is improved, and the temperature of the aerosol can be reduced by mixing and contacting the external airflow and the aerosol. The external air flow from the side hole basically does not enter the aerosol generating substrate section, so that the influence on the aerosol generating substrate section is small, other substances generated by the aerosol generating substrate section and the external air flow at the heating temperature can be avoided to a certain extent, and the purity of the aerosol is ensured.

Drawings

Fig. 1 is a schematic structural view of a first aerosol-generating article according to an embodiment of the application;

fig. 2 is a cross-sectional view of the first aerosol-generating article of fig. 1;

Fig. 3 is a schematic structural view of a second aerosol-generating article according to an embodiment of the application;

fig. 4 is a schematic structural view of a third aerosol-generating article according to an embodiment of the application;

fig. 5 is a schematic structural view of a fourth aerosol-generating article according to an embodiment of the application;

Fig. 6 is a schematic structural view of a fifth aerosol-generating article according to an embodiment of the application;

fig. 7 is a schematic structural view of a sixth aerosol-generating article according to an embodiment of the application;

fig. 8 is a schematic structural view of a seventh aerosol-generating article according to an embodiment of the application;

fig. 9 is a schematic structural view of an eighth aerosol-generating article according to an embodiment of the application;

fig. 10 is a schematic structural view of a ninth aerosol-generating article according to an embodiment of the application;

fig. 11 is a schematic structural view of a tenth aerosol-generating article according to an embodiment of the application;

FIG. 12 is a schematic view of a corrugated structure in an embodiment of the present application;

fig. 13 is a schematic view of another view of the corrugated structure of fig. 12.

Description of the reference numerals

An aerosol-generating substrate segment 1;

functional section 2, ventilation hole 2a, hollow channel 2b, side channel 2c, cooling section 21, supporting section 22, filtering section 23, resistance-reducing channel 23a;

the air inlet unit comprises a wrapping layer 3, a side hole 3a, an air inlet group 3ab and a cavity 3b;

Hollow acetate 10, solid acetate 20, paper tubular structure 30, corrugated structure 40, aluminum foil tubular structure 50;

Detailed Description

It should be noted that, in the case of no conflict, the embodiments of the present application and the technical features of the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present application and should not be construed as unduly limiting the present application.

In the present application, the plurality includes two and more than two. The unit "mm" is millimeters. The unit "°c" is degrees celsius.

Referring to fig. 1 and 2, an embodiment of the present application provides an aerosol-generating article comprising an aerosol-generating substrate segment 1, a functional segment 2 and a wrapper 3.

The functional section 2 comprises a cooling section 21, a supporting section 22 and a filtering section 23, and the aerosol-generating substrate section 1, the supporting section 22, the cooling section 21 and the filtering section 23 are arranged in sequence along the longitudinal direction.

The wrapping layer 3 wraps around the outer periphery of the aerosol-generating substrate segment 1 and the outer periphery of the functional segment 2. Illustratively, the wrapping layer 3 wraps around the outer circumferential surface of the aerosol-generating substrate segment 1 and the outer circumferential surface of the functional segment 2. That is, the outer circumferences of the aerosol-generating substrate section 1, the support section 22, the cooling section 21 and the filter section 23 are all wrapped by the wrapping layer 3. The wrapping layer 3 is one layer, and can be designed into two or more wrapping layers 3 according to the design requirement and manufacturing process of the aerosol-generating product, for example, in manufacturing, the supporting section 22, the cooling section 21 and the filtering section 23 can be wrapped by one layer of wrapping layer 3, and then wrapped by one layer of wrapping layer 3 and the aerosol-generating substrate section 1, or other combination forms can be adopted.

With continued reference to fig. 1 and 2, the wrapping 3 is formed with a side aperture 3a at a location between the aerosol-generating substrate section 1 and the filter section 23. That is, the side hole 3a is located between the aerosol-generating substrate section 1 and the filter section 23. The side holes 3a are used for introducing an external gas, such as air, into the interior of the aerosol-generating article.

In an embodiment of the application, the aerosol-generating substrate section 1 is used for generating an aerosol by heating. By way of example, the aerosol-generating substrate segment 1 may be adapted to generate an aerosol in a heated non-combustible manner. That is, the aerosol-generating substrate segment 1 is heated below the ignition point to produce an aerosol. The aerosol-generating substrate segment 1 is not combusted during the aerosol-generating process. In some application scenarios, the aerosol-generating substrate segment 1 may be adapted to generate an aerosol in a lit manner. The aerosol-generating substrate segments 1 of the present application are more applicable to the generation of aerosols by means of heating without combustion.

The support section 22 is capable of withstanding the temperature of the aerosol from the aerosol-generating substrate section 1 and maintaining its form. The support section 22 serves as a support.

The temperature reduction section 21 is used to reduce the temperature of the aerosol. In this way, the aerosol is made suitable for user inhalation.

The filter section 23 is used for filtering aerosols. Illustratively, the filter stage 23 is capable of blocking material of a target particle size, and is also capable of adjusting the resistance to draw. For example, the filter stage 23 may filter large particle size particles like powdery substances. The aerosol filtered by the filter section 23 has higher uniformity of particle size and finer mouthfeel.

The aerosol-generating article is for a user to inhale an aerosol generated by the aerosol-generating substrate segment 1. For example, the user may draw in the filtered aerosol through the filter segment 23. The aerosol generated by the aerosol-generating substrate section 1 flows through the support section 22 and the cooling section 21 in sequence under the action of suction negative pressure, and is then conveyed to the filtering section 23. That is, the functional segment 2 is located at the longitudinal downstream end of the aerosol-generating substrate segment 1.

Illustratively, the heating temperature of the aerosol-generating substrate section 1 is around 300 ℃, the temperature of the downstream end face of the aerosol-generating substrate section 1 at suction is typically around 200 ℃ and even higher, the temperature of the downstream end face of the aerosol-generating substrate section 1 drops sharply, e.g. around 100 ℃, when not being sucked, and excessive temperatures at suction are liable to cause thermal shrinkage and deformation of the filter section 23, affecting the appearance and the suction experience, resulting in an aerosol "hot mouth" leading to failure to suck.

Referring to fig. 2, the aerosol-generating substrate segment 1 is formed with an air channel 1a, the air channel 1a passing through at least one end face of the aerosol-generating substrate segment 1 in the longitudinal direction. For example, the airway 1a passes through one end of the aerosol-generating substrate segment 1 in the longitudinal direction. For another example, the airway 1a passes through both ends of the aerosol-generating substrate segment 1 in the longitudinal direction. The airflow may flow along the airway 1a from one end of the aerosol-generating substrate segment 1 to the other end of the aerosol-generating substrate segment 1. Aerosol can flow more smoothly through air flue 1a, and aerosol can be orderly delivered, and aerosol flow resistance is less, and the controllability is good, effectively promotes aerosol extraction efficiency, promotes the suction experience.

According to the aerosol generating product provided by the embodiment of the application, on one hand, aerosol generated by the aerosol generating substrate section 1 sequentially flows through the support section 22, the cooling section 21 and the filtering section 23, the flow path of the aerosol can be prolonged through a multi-section structure, the temperature of the aerosol can be reduced step by step, and the problem of 'hot nozzle' in the suction process is solved. On the other hand, the side hole 3a is positioned between the aerosol-generating substrate section 1 and the filtering section 23, the side hole 3a introduces external airflow into the aerosol-generating product, so that aerosol buffered between the aerosol-generating substrate section 1 and the filtering section 23 can flow to the filtering section 23 quickly, the aerosol extraction efficiency and the aerosol release stability are improved, the suction experience is improved, and the temperature of the aerosol can be reduced by mixing and contacting the external airflow and the aerosol. Because of the suction negative pressure and the higher matrix temperature, the external air flow from the side hole 3a does not substantially enter the aerosol-generating matrix section 1, so that the aerosol-generating matrix section 1 is less affected, other substances generated by the aerosol-generating matrix section 1 and the external air flow at the heating temperature can be avoided to a certain extent, and the purity of the aerosol is ensured.

The aerosol-generating article is for use with an aerosol-generating device having a heating element.

An embodiment of the application provides an aerosol-generating device for use in an aerosol-generating article according to any of the embodiments of the application. An aerosol-generating device heating element for heating an aerosol-generating substrate segment 1 to generate an aerosol.

The heating means of the heating element includes, but is not limited to, resistance heating, electromagnetic heating, infrared heating, microwave heating, laser heating, etc. By heat convection, it is meant that the heating element does not contact the aerosol-generating substrate segment 1, the heating element first heats the air, and then the hot air toasts the aerosol-generating substrate segment 1. By heat conduction is meant that the heating member is in contact with the aerosol-generating substrate segment 1 and conducts heat to the aerosol-generating substrate segment 1. Illustratively, the resistive, electromagnetic heating primarily transfers heat to the aerosol-generating substrate segment 1 in a thermally conductive or convective form. Infrared heating, microwave heating or laser heating transfers heat to the aerosol-generating substrate segment 1 mainly in the form of thermal radiation. I.e. the heating member may heat the aerosol-generating substrate section 1 by one or more of heat conduction, heat convection and heat radiation.

In an embodiment, the aerosol-generating substrate segment 1 is of unitary construction.

By way of example, the aerosol-generating substrate segments 1 may be manufactured as a one-piece structure by injection molding, die casting or extrusion. In this way, the aerosol-generating substrate segment 1 is an integral medium during use, for example after being heated and sucked or stopped, and is not easy to disintegrate and fall.

Extrusion molding refers to a process in which a material is plasticized by heating by the interaction between the barrel of an extrusion device and the extrusion screw and is pushed by the extrusion screw towards a discharge port, molded into a predetermined projected shape and into an aerosol-generating substrate segment 1 having corresponding apertures by an extrusion die, such as a port.

The longitudinal direction refers to the extending direction of the aerosol-generating substrate section 1. For example, the aerosol-generating substrate segment 1 is extrusion-molded, the longitudinal direction being the extrusion direction of the aerosol-generating substrate segment 1. The projected shape refers to the shape that the aerosol-generating substrate segment 1 assumes with a plane perpendicular to the longitudinal direction as the projection plane.

In one embodiment, referring to fig. 2 to 11, the air passage 1a is a linear air passage 1a extending in a straight line along a longitudinal direction. The linear air passage 1a is easy to form, and the difficulty in manufacturing can be reduced. The flow resistance of the air flow in the linear air passage 1a is relatively small.

In one embodiment, referring to fig. 2, the number of the air passages 1a may be plural.

In some embodiments, the end face of the aerosol-generating substrate segment 1 longitudinally remote from the functional segment 2 may be self-closing or co-closing with an aerosol-generating device. The heating element may, for example, enclose an end face of the aerosol-generating substrate segment 1 longitudinally remote from the functional segment 2. The end of the aerosol-generating substrate segment 1 remote from the functional segment 2 may also be closed by a closure. The outer circumferential surface of the aerosol-generating substrate segment 1 is wrapped with a wrapping layer 3, so that it is difficult for ambient air to enter the aerosol-generating substrate segment 1 through the end surface of the aerosol-generating substrate segment 1 longitudinally remote from the functional segment 2, so that the aerosol-generating substrate segment 1 is heated in a low-oxygen or even oxygen-free environment. The aerosol-generating article is always in an anaerobic or hypoxic state in the sucking process, and by blocking or reducing the air from entering the aerosol-generating substrate section 1, the heat dilution caused by the air can be reduced, the heating efficiency is improved, the temperature field of the heating cavity of the heating element is kept stable continuously, the participation of oxygen can be reduced, the generation of bad substances can be further reduced, and the carbonization probability of the aerosol-generating substrate section 1 is reduced.

In one embodiment, at least one of the outer peripheral surface of the cooling section 21 and the outer peripheral surface of the support section 22 is formed with a vent hole 2a, and the vent hole 2a is aligned with and communicates with the side hole 3a. Referring to fig. 2 to 4, if the side hole 3a is located at the position of the cooling section 21, a vent hole 2a is formed at a position of the outer peripheral surface of the cooling section 21 aligned with the side hole 3a. Referring to fig. 5, if the side hole 3a is formed at the position of the support section 22, a vent hole 2a is formed at a position of the outer circumferential surface of the support section 22 aligned with the side hole 3a. If the side hole 3a is at a position where both the cooling section 21 and the support section 22 are located, both the outer peripheral surface of the cooling section 21 and the outer peripheral surface of the support section 22 are formed with the ventilation hole 2a. Ambient air flow from the side aperture 3a can enter the cooling section 21 and/or the support section 22 where the vent 2a is located through the vent 2a. The ventilation holes 2a can facilitate the external air flow to enter the inside of the cooling section 21 and/or the support section 22, thereby improving the extraction efficiency of the aerosol in the cooling section 21 and the support section 22.

It is to be understood that the alignment and communication of the vent holes 2a with the side holes 3a means that the projection of the side holes 3a on the outer circumferential surface of the cooling section 21 and/or the outer circumferential surface of the support section 22 at least partially or completely overlaps the vent holes 2 a.

In some embodiments, referring to fig. 2 to 6, at least one of the cooling section 21 and the support section 22 is formed with a hollow passage 2b passing through both end surfaces in the longitudinal direction.

In one embodiment, referring to fig. 2 to 5, the cooling section 21 is formed with a hollow passage 2b passing through both end surfaces in the longitudinal direction. The hollow channel 2b can increase the specific surface area, promote the aerosol flow-through stroke, and can realize rapid cooling and reduce the suction resistance. Illustratively, the cool-down section 21 is capable of reducing the temperature of the aerosol to below 50 ℃.

In another embodiment, referring to fig. 2 to 5, the support section 22 is formed with a hollow passage 2b passing through both end surfaces in the longitudinal direction. In a further embodiment, the cooling section 21 and the support section 22 are each formed with a hollow channel 2b. The hollow channel 2b of the supporting section 22 and the hollow channel 2b of the cooling section 21 can both buffer aerosol, so that the buffer capability of the aerosol is obviously improved, the aerosol can be stably released, the mouth-by-mouth consistency of the aerosol generating product is good, the flowing stroke of the aerosol can be improved, and the rapid cooling is realized.

In some embodiments, referring to fig. 2 to 5, the central axis of the hollow channel 2b of the cooling section 21 and the central axis of the hollow channel 2b of the supporting section 22 are coincident. In this way, aerosol from the hollow passage 2b of the support section 22 can enter the hollow passage 2b of the cooling section 21 substantially in a straight line.

In some embodiments, referring to fig. 5, the hydraulic diameter of the hollow passage 2b of the support section 22 is greater than the hydraulic diameter of the hollow passage 2b of the cooling section 21. The air flow velocity in the hollow passage 2b of the cooling section 21 is relatively fast, and the extraction efficiency of aerosol can be accelerated under the action of venturi effect.

In some embodiments, referring to fig. 2 and 8, the hydraulic diameter of the hollow channel 2b of the support section 22 is not greater than the hydraulic diameter of the hollow channel 2b of the cooling section 21. That is, the support section 22 and the cooling section 21 are each formed with a hollow passage 2b. In some embodiments, the hydraulic diameter of the hollow passage 2b of the support section 22 is equal to the hydraulic diameter of the hollow passage 2b of the cooling section 21. In other embodiments, the hollow channel 2b of the support section 22 has a relatively smaller hydraulic diameter, so that the aerosol can be rapidly extracted into the cooling section 21, and the hollow channel 2b of the cooling section 21 has a larger hydraulic diameter, so that the volume of the hollow channel 2b of the cooling section 21 can be increased, i.e. the aerosol flowing path is increased, and rapid cooling is realized, for example, the cooling section 21 can reduce the temperature of the aerosol below 50 ℃.

The hydraulic diameter is the ratio of four times the flow cross-sectional area to the perimeter. The flow cross section refers to a cross section taken perpendicular to the flow line clusters of the fluid. For example, if the flow cross-sectional shape of the hollow passage 2b is a regular quadrangle, the hydraulic diameter is the ratio of four times the flow cross-sectional area of the hollow passage 2b of the regular quadrangle to the circumference of the regular quadrangle. For another example, the flow cross-section of the hollow passage 2b is circular, and the hydraulic diameter is the diameter of the circular hollow passage 2 b.

In some embodiments, referring to fig. 2 to 8, a vent hole 2a is formed at a position where the outer peripheral surface of the cooling section 21 and the outer peripheral surface of the supporting section 22 are aligned with the side hole 3a, and the vent hole 2a communicates with the side hole 3a and the hollow passage 2b. That is, at least one of the outer peripheral surface of the cooling section 21 and the outer peripheral surface of the support section 22 is formed with a vent hole 3a, and the vent hole 2a is aligned with and communicates with the side hole 3a. Specifically, the vent hole 2a penetrates the wall surface of the hollow passage 2b. The external air flow enters the hollow channel 2b through the side hole 3a and the vent hole 2a, so that the mixing of the external air flow and the aerosol can be accelerated, the release amount of the aerosol released from the filtering section 23 is larger, the release rate is faster, and the release is more stable.

The hollow passage 2b of the cooling section 21 is located in the central region of the cooling section 21. In some embodiments, referring to fig. 2, the cooling section 21 passes through the hollow channel 2b thereon along the longitudinal central axis. Preferably, the central axis of the hollow channel 2b of the cooling section 21 coincides with the central axis of the cooling section 21 in the longitudinal direction. Since the flow rate of the fluid is faster as it gets closer to the central region, the hollow passage 2b of the cooling section 21 is located at the central region of the cooling section 21, so that the aerosol can maintain a faster flow rate, making the suction resistance moderate.

The hollow channel 2b of the support section 22 is located in the central region of the support section 22. In some embodiments, referring to fig. 2, the support section 22 passes through the hollow channel 2b thereon along a central longitudinal axis. Preferably, the central axis of the hollow channel 2b of the support section 22 coincides with the central axis of the support section 22 in the longitudinal direction. Since the flow rate of the fluid is faster as it gets closer to the central region, the hollow passage 2b of the support section 22 is located at the central region of the support section 22, so that the aerosol can maintain a faster flow rate, making the suction resistance moderate.

The central axis refers to the symmetry line of the axisymmetric pattern or the rotator pattern. That is, the cooling section 21, the support section 22, and the hollow passage 2b may each be an axisymmetric pattern or a rotator pattern.

In some embodiments, referring to fig. 8, at least one of the cooling section 21 and the support section 22 is formed with side passages 2c passing through both end surfaces in the longitudinal direction, the side passages 2c being located laterally outside the hollow passage 2 b. The side channels 2c can provide more aerosol flow paths, reduce suction resistance, improve aerosol extraction efficiency, reduce aerosol temperature, improve aerosol release stability and improve user suction experience.

For example, referring to fig. 12 and 13, the hollow passage 2b and the side passage 2c together form a corrugated structure 40.

Illustratively, in one embodiment, the cooling section 21 is formed with a hollow passage 2b and side passages 2c, the side passages 2c being located laterally outside the hollow passage 2b of the cooling section 21, the side passages 2c passing through both end surfaces of the cooling section 21 in the longitudinal direction. In one embodiment, the support section 22 is formed with a hollow passage 2b and side passages 2c, the side passages 2c being located laterally outside the hollow passage 2b of the support section 22, the side passages 2c passing through both end surfaces of the support section 22 in the longitudinal direction.

The transverse direction is perpendicular to the longitudinal direction. Taking the example of an aerosol-generating substrate segment 1 being cylindrical, the transverse direction is radial.

In some embodiments, a flavour-imparting substance is provided within the side channel 2 c. The flavoring substance not only can realize rich or compensated flavor, but also can absorb heat and release flavor to reduce the temperature of aerosol.

A taste substance generally refers to a substance contained in a substance taken into the oral cavity that gives a sensory impression to a sensory organ such as the tongue. Sensory impressions include physical, chemical, and psychological sensations. For example, the flavour-imparting substance may be a fragrance-imparting sheet, which may be contacted with an aerosol at 80 ℃ to 220 ℃ and absorb heat from the aerosol to release flavour, such that the aerosol cools.

Illustratively, the flavoring substances may be fitted into the side channel 2c by injection or coating, etc.

In some embodiments, referring to fig. 8, 12 and 13, the number of side channels 2c is plural, and the plurality of side channels 2c are spaced around the periphery of the hollow channel 2 b. The plurality of side channels 2c can effectively change the flowing state of aerosol, thereby improving the cooling effect.

In some embodiments, referring to fig. 12, the corrugated structure 40 includes an outer ring layer, an inner ring layer and a plurality of ribs, the outer ring layer is located at a lateral outer side of the inner ring layer and both are annular, the inner ring layer defines a central channel, the ribs are disposed between the outer ring layer and the inner ring layer, and the plurality of ribs are disposed at intervals along a circumferential direction to divide a space between the outer ring layer and the inner ring layer into a plurality of side channels 2c. In this way, the cooling section 21 has better structural strength and is convenient for the longitudinal circulation of aerosol. For example, both the outer and inner annular layers may be annular.

In some embodiments, referring to fig. 3, the cooling section 21 may be corrugated 40.

In some embodiments, referring to fig. 10, the support section 22 may be corrugated 40.

For example, in some embodiments, the vent holes 2a may pass through only the outer annular layer. That is, the vent hole 2a communicates with the side passage 2 c.

Illustratively, in some embodiments, the vent holes 2a may pass through the outer and inner annular layers. That is, the vent hole 2a may communicate with the hollow passage 2 b.

In some embodiments, the hydraulic diameter of the side hole 3a is 0.1mm to 0.7mm. Exemplary, the hydraulic diameter of the side hole 3a is 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.6mm, or 0.7mm, etc. Thus, the side hole 3a has less influence on the structural strength of the wrapping layer 3, and the air inflow of the single side hole 3a is moderate.

In some embodiments, referring to fig. 1, the number of side holes 3a is plural, and the plural side holes 3a are arranged at intervals in the circumferential direction to form an intake group 3ab. The ambient air flow is able to enter the aerosol-generating article from a plurality of circumferential orientations such that the ambient air flow contacts the aerosol at a plurality of angular positions.

In some embodiments, referring to fig. 1 and 2, two side holes 3a form a pair, and the pair of side holes 3a are arranged on a straight line in the lateral direction. Illustratively, the aerosol-generating article is cylindrical and the pair of side apertures 3a are symmetrically arranged along a diametrical line of the aerosol-generating article.

In some embodiments, referring to fig. 1, the number of intake groups 3ab is 1 to 7 (including 1 and 7). In this way, the hydraulic diameter of the single side hole 3a can be relatively small under the condition that the intake air amount is ensured to be moderate.

In some embodiments, the number of side holes 3a in each intake group 3ab is 2 to 16. Illustratively, the number of side holes 3a in each intake group 3ab is 2,3, 5, 8, 10, 11, 15, 16, or the like. In this way, the plurality of side holes 3a can cover a plurality of orientations in the circumferential direction, and the hydraulic diameter of the single side hole 3a is moderate.

In some embodiments, the number of the air intake groups 3ab is plural, the plural air intake groups 3ab are arranged at intervals in the longitudinal direction, and the distance between two adjacent air intake groups 3ab is not less than 0.5mm. Illustratively, the distance between adjacent two air intake groups 3ab is 0.5mm, 0.6mm, 1mm, or the like. In this way, the plurality of air inlet groups 3ab enable the aerosol-generating article to introduce external air flow at a plurality of positions along the longitudinal direction, and the distance between two adjacent air inlet groups 3ab is moderate, so that air flow turbulence caused by concentrated introduction of external air flow due to too small distance is avoided.

In some embodiments, the projection of the support section 22 and the projection of the cooling section 21 overlap with a plane perpendicular to the longitudinal direction as a projection plane. For example, in one embodiment, referring to fig. 2 to 11, the projection of the support section 22 and the projection of the cooling section 21 are both circular and have the same outer diameter. This facilitates the assembly of the support section 22 and the cooling section 21 into the envelope layer 3. Under the condition that the support section 22 is abutted against the cooling section 21, the projection superposition of the support section 22 and the cooling section 21 is convenient for the support section 22 and the cooling section 21 to be formed through compounding or rubbing.

In some embodiments, the projection of the filter section 23, the projection of the support section 22, the projection of the cooling section 21 and the projection of the aerosol-generating substrate section 1 are all coincident with a plane perpendicular to the longitudinal direction as projection plane. For example, in an embodiment, referring to fig. 2 to 11, the aerosol-generating substrate section 1, the cooling section 21, the supporting section 22 and the filtering section 23 are all cylindrical structures with the same outer diameter, the central axes of the aerosol-generating substrate section 1, the cooling section 21, the supporting section 22 and the filtering section 23 are all overlapped and all along the longitudinal direction, the cooling section 21 is formed with a hollow channel 2b passing through two end surfaces along the longitudinal direction, a plane perpendicular to the longitudinal direction is taken as a projection plane, and the projection of the hollow channel 2b of the cooling section 21 is circular. That is, the projections of the filter section 23, the support section 22, the cooling section 21 and the aerosol-generating substrate 1 are all circular and have the same outer diameter. This facilitates the assembly of the above-described structure into the envelope layer 3. In this way, the aerosol-generating article is also cylindrical, i.e. in the longitudinal direction, i.e. in the direction of the central axes of the aerosol-generating substrate section 1, the cooling section 21, the support section 22 and the filter section 23.

In one embodiment, referring to fig. 2, the support section 22 is formed with hollow channels 2b passing through both end surfaces in the longitudinal direction, and the hydraulic diameter of the hollow channels 2b of the support section 22 is equal to the hydraulic diameter of the hollow channels 2b of the cooling section 21. In this way, the support section 22 can stably support the cooling section 21 and the aerosol-generating substrate section 1.

In one embodiment, referring to fig. 5, the filter segment 23 is formed with a resistance reducing channel 23a passing through at least one end in the longitudinal direction. Illustratively, in one embodiment, the resistance reducing passageway 23a extends through one end of the filter segment 23 in the longitudinal direction. In another embodiment, the resistance reducing passage 23a passes through both ends of the filter segment 23 in the longitudinal direction. In this way, the resistance reducing channel 23a can provide a lower filtering effect, further improve the release amount of aerosol, and avoid the excessive overall resistance or weight of the aerosol-generating product.

The resistance reducing passage 23a of the filter section 23 is located in the central region thereof. In some embodiments, referring to fig. 5, the central axis of the filter segment 23 and the central axis of the resistance reducing channel 23a are coincident.

In an embodiment, referring to fig. 10 and 11, a hollow space 3b is formed around the wrapping layer 3, and a side hole 3a is formed on a wall surface of the hollow space 3b around the wrapping layer 3. That is, the circumferential wall of the cavity 3b is the wrapping layer 3. The empty space means a space through which only the air flow flows. The empty space is not filled with solid and liquid substances. The side hole 3a communicates with the cavity 3b, and is capable of introducing an external air flow into the cavity 3 b. The area of the flow cross section of the cavity 3b is larger, so that a larger flow cross section can be provided for the circulation of aerosol, and the aerosol can be buffered into the cavity 3b to improve the buffering capacity of the aerosol, and provide a sufficient aerosol source for the extraction and release of the aerosol.

In one embodiment, referring to fig. 10, a cavity 3b is provided between the filtering section 23 and the cooling section 21. Thus, during the suction process, ambient air flows through the side holes 3a into the cavity 3b and along with aerosol from the cool-down section 21 to the filter section 23.

In one embodiment, referring to fig. 11, a cavity 3b is provided between the cooling section 21 and the support section 22. Thus, during the suction, ambient air flows through the side holes 3a into the cavity 3b and along with the aerosol from the support section 22 towards the cooling section 21.

In some embodiments, the support section 22 is capable of withstanding temperatures no greater than 270 ℃. That is, the support section 22 remains unchanged in form at a temperature of 270 ℃. In this way, the support section 22 has the characteristic of high heat resistance, and the risks of thermal collapse, thermal deformation, blockage of the air passage 1a of the aerosol-generating substrate section 1 by residues that the support section 22 may fall off, unstable aerosol release, and the like can be avoided.

In some embodiments, the support section 22 comprises a substrate and a metal coating, the substrate being annular in shape to form the hollow channel 2b, the substrate having the metal coating attached to at least one of the inner and outer surfaces in the transverse direction.

The metal coating includes, but is not limited to, at least one of aluminum foil, copper, and tin.

In some embodiments, the metal coating has a coating rate of greater than or equal to 5%. The coating ratio refers to the ratio of the amount of metal coating per unit area on the inner or outer surface of the substrate to the total of the amount of metal coating and the amount of substrate.

In some embodiments, the support section 22 has a hollowness of not less than 30%. In this way, the support section 22 has a greater degree of hollowness, which reduces or prevents condensation of aerosols in the support section 22. The hollowness refers to the ratio of the volume of the hollow passage 2b to the total volume of the support section 22.

In some embodiments, the support section 22 is formed with a plurality of airflow apertures through both longitudinal end surfaces thereof. The airflow holes are used for circulating aerosol.

In some embodiments, the acetate fibers are formed from bundles of fibers arranged in a circumferentially side-by-side, spaced configuration. Referring to fig. 11, the hollow acetate fiber 10 means that the central region of the filament bundle is hollow. Referring to fig. 8, solid acetate fibers 20 refer to fibers that have only gaps between the tows and no hollows.

In some embodiments, the filter segment 23 may employ hollow acetate fibers 10 or solid acetate fibers 20, each capable of achieving directional filtration of harmful components from aerosols and adjusting the resistance to draw, and the exemplary resistance to draw of the filter segment 23 is 100pa to 350pa (including 100pa and 350 pa).

In some embodiments, the cooling section 21 is formed with a plurality of flow holes through both longitudinal end surfaces thereof. The flow-through holes are used for flowing through the aerosol.

In some embodiments, the cooling section 21 and the supporting section 22 may be integrally formed. Illustratively, the cooling section 21 and the support section 22 may be integrally formed by extrusion, injection molding, die casting, and the like.

In some embodiments, the projection of the filter section 23, the projection of the support section 22, the projection of the cooling section 21 and the projection of the aerosol-generating substrate section 1 may all have a circular, oval or polygonal shape (e.g. square, prismatic or pentagonal, etc.) with a plane perpendicular to the longitudinal direction as projection plane. That is, the filter section 23, the support section 22, the cooling section 21, and the aerosol-generating substrate section 1 may each be cylindrical or prismatic, etc.

In some embodiments, the shapes of the flow cross-section of each flow passage above the side hole 3a, the vent hole 2a, the hollow passage 2b, the side passage 2c, the air passage 1a, the resistance-reducing passage 23a, the air flow hole, and the flow hole include, but are not limited to, a circle, an ellipse, or a polygon (e.g., square, prismatic, pentagon, etc.).

In some embodiments, airway 1a is a curvilinear airway, at least some of the orifice segments of which are curvilinear with a non-zero curvature. The curved airway can greatly increase the flow path of the airflow without obviously increasing the length of the aerosol generating substrate section 1, and can prolong the contact time between the airflow and the wall surface of the curved airway, thereby improving the extraction rate of the aerosol.

In one embodiment, the curved airway is spiral. That is, the three-dimensional shape of the curved airway is a spatial spiral. The line connecting any point of the spiral curve-shaped air passage with the starting point has an inclined angle relative to the axis. The spiral curve-shaped air passage can greatly prolong the flow path of air flow, separate out aerosol from the aerosol generating substrate section 1 into the curve-shaped air passage, and improve the flow speed of the aerosol in the aerosol generating substrate section 1, so that the impact force of the air flow is improved, the aerosol can be uniformly mixed, the uniformity of the aerosol is improved, and the suction feeling of a user is improved.

It should be noted that micropores may exist in the aerosol-generating substrate segment 1, for example, for the aerosol-generating substrate segment 1 of the particle combination, gaps between particles form micropores, but the air passage 1a of the present application is different from micropores, the air passage 1a of the present application is a macroscopic hole, the micropores are microscopic holes, and the size such as the flow cross-sectional area and length of the air passage 1a is larger than that of the micropores. The air passage 1a is mainly formed by design processing, for example by die processing, so that the size of the air passage 1a such as the flow cross-sectional area and the length can be changed according to the design requirement, the size of the micro-holes is determined by the gaps among particles, for example, the material is granular material, the aerosol generating substrate section 1 formed by extrusion molding of the material is provided with micro-holes, the size of the micro-holes such as the flow cross-sectional area and the length is naturally formed by extrusion process and material components, and a certain expansion is generated after the material charging barrel flows out of the die opening to form the micro-holes.

The following schematically shows specific embodiments, which are described in detail as follows:

In a first embodiment, referring to fig. 1 and 2, the aerosol-generating substrate segment 1 has a plurality of longitudinally extending linear airways 1a, the support segment 22 abuts against a downstream end face of the aerosol-generating substrate segment 1, the cooling segment 21 abuts against a downstream end face of the support segment 22, and the filter segment 23 abuts against a downstream end face of the cooling segment 21. The support section 22 and the cooling section 21 are both formed with hollow passages 2b, and the hydraulic diameter of the hollow passages 2b of the support section 22 is equal to the hydraulic diameter of the hollow passages 2b of the cooling section 21. The side hole 3a is positioned at the cooling section 21, and a vent hole 2a is formed at the position of the outer peripheral surface of the cooling section 21 aligned with the side hole 3a. The vent hole 2a communicates with the hollow passage 2b of the cooling section 21 and the side hole 3a. The filter stage 23 is a solid acetate 20. The cooling section 21 is a paper tube structure 30 having a hollow passage 2 b. The support section 22 is a tubular structure 50 of aluminium foil with a hollow channel 2 b.

It will be appreciated that the air passage 1a in the first embodiment may be a curved air passage such as a spiral air passage 1a, and the hydraulic diameter of the hollow passage 2b of the support section 22 may be unequal to the hydraulic diameter of the hollow passage 2b of the cooling section 21.

Taking the aerosol-generating article of fig. 1 and 2 as an example, when the aerosol-generating substrate segment 1 is heated, the aerosol released by the medium of the aerosol-generating substrate segment 1 forming the air channel 1a is directly converged into the air channel 1a, and in addition, micropores are further formed in the aerosol-generating substrate segment 1a, at least partially communicated with each other and communicated with the air channel 1a, and the aerosol heated by the aerosol-generating substrate segment 1a can be converged into the air channel 1a through the micropores. In the suction process, the aerosol generating substrate section 1 is heated to generate aerosol, the aerosol generated at the position of the aerosol generating substrate section 1 surrounding the air passage 1a can directly enter the air passage 1a, the aerosol generated at the position of the aerosol generating substrate section 1 around the air passage 1a can enter the air passage 1a through micropores, the airflow in the air passage 1b flows longitudinally and flows to the functional section, that is, the aerosol from the aerosol generating substrate section 1 sequentially passes through the supporting section 22, the cooling section 21 and the filtering section 23, and finally enters the oral cavity of the user.

In a second embodiment, referring to fig. 3, the second embodiment differs from the first embodiment in that the hydraulic diameter of the hollow passage 2b of the support section 22 is larger than the hydraulic diameter of the hollow passage 2b of the cooling section 21. The support section 22 is a paper tubular structure 30 with a hollow channel 2 b. The wall thickness of the outer periphery of the support section 22 is smaller than or equal to the wall thickness of the aerosol-generating substrate section 1. In this way, the cooling section 21 can withstand temperatures of not more than 200 ℃ without thermal collapse, deformation, or the like. The cooling section 21 is a corrugated structure 40 having a hollow passage 2b and a plurality of side passages 2 c. The plurality of side channels 2c are capable of changing the flow state of the aerosol and reducing the aerosol temperature.

In a third embodiment, referring to fig. 4, the third embodiment differs from the second embodiment in that the support section 22 is a hollow acetate 10 having a hollow passage 2 b. The hollow degree of the hollow passage 2b of the support section 22 is 20% or more. Preferably, the hollow channels 2b of the support section 22 have a hollowness of 35% to 40% (including 35% and 40%). Thus, the ratio of the tow volume of the support section 22 to the total volume of the support section 22 is about 40%, which can prevent deformation and facilitate support. The cooling section 21 is a hollow acetate 10 having a hollow passage 2 b. The hydraulic diameter of the hollow channel 2b of the cooling section 21 is smaller than that of the hollow channel 2b of the supporting section 22, so that on one hand, the processing and forming are facilitated, the material diversity requirements are simplified, and the material selecting cost is reduced. On the other hand, the reducing design of the hollow passage 2b of the cooling section 21 and the hollow passage 2b of the supporting section 22, the aerosol is rapidly extracted to the cooling section 21 for cooling by venturi effect generated by the reducing design, for example, the aerosol temperature is cooled from 180 ℃ to 220 ℃ of the aerosol-generating substrate section 1 (including 180 ℃ and 220 ℃) to 80 ℃ to 100 ℃. The extraction efficiency of the aerosol can be effectively improved, and the method has remarkable advantage on the consistency of the mouth-by-mouth release of the aerosol.

In the fourth embodiment, referring to fig. 5, the fourth embodiment is different from the third embodiment in that the side hole 3a is located at the support section 22, and a vent hole 2a is formed at a position of the outer peripheral surface of the support section 22 aligned with the side hole 3a, and the vent hole 2a communicates with the hollow passage 2b of the support section 22 and the side hole 3a. The support section 22 is a hollow paper tubular structure 30 with hollow channels 2 b. The filter segment 23 is a hollow acetate fiber 10 having a resistance reducing channel 23 a. The suction resistance of the filter section 23 is 100pa to 250pa (including 100pa and 250 pa).

In the fifth embodiment, referring to fig. 6, the difference between the fifth embodiment and the fourth embodiment is that the side hole 3a is located at the cooling section 21, and the cooling section 21 is a solid acetate 20, i.e. the cooling section 21 has no hollow channel 2b. In this way, the cooling section 21 can bear the supporting actions of thermal collapse, deformation and the like at the temperature of the aerosol not higher than 150 ℃, the adjustable absorption resistance of the cooling section 21 is 100Pa to 350Pa (including 100Pa and 350 Pa), and the absorption resistance of the whole aerosol-generating product can be 600Pa to 1200Pa (including 600Pa and 1200 Pa). The cooling section 21 can further enhance prefiltering of large particles or oily substances released from the upstream aerosol-generating substrate section 1, reduce the filtration pressure of the filtration section 23, and improve the safety of suction. The outer peripheral surface of the cooling section 21 is formed with ventilation holes 2a at positions aligned with the side holes 3 a. The support section 22 is a hollow acetate 10 having hollow channels 2b. The hollow degree of the hollow passage 2b of the support section 22 is 30% or more. Thus, on the premise of meeting the supporting effect, the buffer space of the supporting section 22 is increased, and more buffer space is provided for aerosol.

In a sixth embodiment, referring to fig. 7, the sixth embodiment differs from the fifth embodiment in that the support section 22 is a corrugated structure 40 having a hollow channel 2b and a plurality of side channels 2 c.

In a seventh embodiment, referring to FIG. 8, the seventh embodiment differs from the sixth embodiment in that the filter stage 23 is a solid acetate fiber 20. The cooling section 21 is a hollow acetate 10 having a hollow passage 2 b. The hydraulic diameter of the hollow passage 2b of the support section 22 is smaller than the hydraulic diameter of the hollow passage 2b of the cooling section 21.

In an eighth embodiment, referring to fig. 9, the eighth embodiment differs from the seventh embodiment in that the support section 22 is formed with a plurality of air flow holes passing through both longitudinal end surfaces thereof. The filter segment 23 is a hollow acetate fiber 10 having a resistance reducing channel 23 a. The hollow degree of the hollow channel 2b of the cooling section 21 is greater than or equal to 75%, the volume of the hollow channel 2b of the cooling section 21 is increased, namely, the aerosol flowing way is increased, rapid cooling is realized, and the cooling section 21 has a thinner wall thickness, so that the ventilation hole 2a is formed.

In the ninth embodiment, referring to fig. 10, the difference between the ninth embodiment and the eighth embodiment is that a cavity 3b is provided between the filtering section 23 and the cooling section 21, and a side hole 3a is formed on a wall surface of the cavity 3b surrounded by the wrapping layer 3. The cooling section 21 is formed with a plurality of flow holes passing through both end surfaces in the longitudinal direction thereof. The support section 22 is a corrugated structure 40 having a hollow channel 2b and a plurality of side channels 2 c. The hydraulic diameter of the flow holes is larger than or equal to that of the air passages 1a, and the number of the flow holes is smaller than or equal to that of the air passages 1a, so that the whole suction resistance is adjusted by adjusting the number of the flow holes, the hydraulic diameter and the like, and the cooling effect is good. The hollowness of the resistance-reducing channel 23a of the transition section is less than or equal to 45%, which is favorable for the rapid extraction of aerosol and the stability of suction by mouth.

In a tenth embodiment, referring to FIG. 11, the tenth embodiment differs from the ninth embodiment in that the cavity 3b is located between the cooling section 21 and the support section 22. The aerosol flows through the support section 22 and is subjected to heat absorption and cooling by the flavor-developing substance, enters the cavity 3b, is pre-cooled in the cavity 3b by external air flow, for example, is cooled to below 130 ℃, relieves the cooling pressure of the downstream cooling section 21, enters the cooling section 21 for cooling, has the temperature of the cooled aerosol less than 55 ℃, and is finally sucked out through the filtering section 23 of the hollow acetate fiber 10.

The cooling material used in the cooling section 21 includes, but is not limited to, one or more of PE (polyethylene), PLA (Polylactic Acid ), PBAT (Polybutylene ADIPATE TEREPHTHALATE, polybutylene adipate terephthalate), PP (Polypropylene), acetate fiber, and propylene fiber.

The filtering material used in the filtering section 23 includes, but is not limited to, one or more of PE (polyethylene), PLA (Polylactic Acid ), PBAT (Polybutylene ADIPATE TEREPHTHALATE, polybutylene adipate terephthalate), PP (Polypropylene), acetate fiber, propylene fiber, polyethylene terephthalate (Polyethylene terephthalate, PET), and the like.

The materials of the cooling section 21 and the filtering section 23 may be the same or different.

In one embodiment, the aerosol-generating substrate segment 1 comprises a plant material, an adjunct material, a smoke agent material, an adhesive material, and a flavor material.

Plant material is used to produce aerosols when heated. The auxiliary raw material is used for providing skeleton support for plant raw materials. The smoke agent feedstock is used to produce a substantial amount of smoke when heated. The binder material is used to bond the component materials. Perfume raw materials are used to provide a characteristic fragrance. Thus, the plant raw material and the fumigant raw material can ensure the aerosol generation amount, and the spice raw material can promote the release of the aroma in the sucking process, so that the user experience is improved. The auxiliary raw material not only can improve the fluidity of the mixed material, but also enables the aerosol-generating substrate section 1 to be in a porous structure so as to facilitate the extraction and flow of aerosol. The adhesive raw material ensures that plant raw material powder, auxiliary agent and the like form a stable mixture, and the loosening of the structure is avoided.

In one embodiment, the plant material is one or more of tobacco leaf material, tobacco leaf fragments, tobacco stems, tobacco powder, fragrant plant, etc. after crushing. The plant raw material is a core source of the fragrance, and endogenous substances in the plant raw material can generate physiological satisfaction for a user, and the endogenous substances such as alkaloids enter human blood to promote the pituitary to generate dopamine, so that the physiological satisfaction is obtained.

In one embodiment, the auxiliary raw material can be one or a combination of more of inorganic filler, lubricant and emulsifier. Wherein the inorganic filler comprises one or more of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talcum powder and diatomite. The inorganic filler can provide skeleton supporting function for plant raw materials, and meanwhile, the inorganic filler also has micropores, so that the porosity of the aerosol generating substrate section 1 can be improved, and the release rate of aerosol is improved.

The lubricant comprises one or more of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. The lubricant can increase fluidity of plant raw material powder, reduce friction force among plant raw material powder, ensure that the overall density of plant raw material powder distribution is uniform, reduce pressure required in the extrusion molding process and reduce abrasion of a die.

The emulsifier comprises one or more of polyglycerol fatty acid ester, tween-80 and polyvinyl alcohol. The emulsifier can slow down the loss of the fragrant substances in the storage process to a certain extent, increase the stability of the fragrant substances and improve the sensory quality of the product.

In one embodiment, the smoke source may include one or more combinations of monohydric alcohols (e.g., menthol), polyhydric alcohols (e.g., propylene glycol, glycerol, triethylene glycol, 1, 3-butylene glycol, and tetraethylene glycol), esters of polyhydric alcohols (e.g., glyceryl triacetate, triethyl citrate, glyceryl diacetate mixture, triethyl citrate, benzyl benzoate, tributyrin), monocarboxylic acids, dicarboxylic acids, polycarboxylic acids (e.g., lauric acid, myristic acid), or aliphatic esters of polycarboxylic acids (e.g., dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1, 3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, termitidine (Triactin), meso-erythritol, glyceryl diacetate mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl benzoate, tributyrin, lauryl acetate).

In one embodiment, the binder material is in intimate contact by interfacial wetting with the component materials, creating intermolecular attractive forces that act to bind the component materials, e.g., powders, liquids, etc. The binder material may be natural plant extracted, nonionic modified viscous polysaccharide, including one or more of tamarind polysaccharide, guar gum, and modified cellulose (such as carboxymethyl cellulose). The binder is used for binding the particles together and is not easy to loosen, and in addition, the water resistance of the aerosol-generating substrate section 1 is improved, and the aerosol-generating substrate section is harmless to human bodies.

In one embodiment, the perfume raw materials are used to provide a characteristic aroma, such as a solid or liquid substance of hay, roasted sweet, nicotine. The flavor raw materials may include one or more combinations of tobacco, flavored plant extracts, essential oils, absolute oils, and the flavor raw materials may include one or more combinations of monomeric flavoring substances, such as megastigmatrienone, neophytadiene, geraniol, nerol, and the like.

In the description of the present application, reference to the terms "one embodiment," "some embodiments," "other embodiments," "still other embodiments," or "exemplary" etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In the present application, the schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples described in the present application and the features of the various embodiments or examples may be combined by those skilled in the art without contradiction.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims (16)

1. An aerosol-generating article comprising:

An aerosol-generating substrate segment formed with an airway passing through at least one end face of the aerosol-generating substrate segment in a longitudinal direction;

the functional section comprises a cooling section, a supporting section and a filtering section, wherein the aerosol generating substrate section, the supporting section, the cooling section and the filtering section are sequentially arranged along the longitudinal direction;

And the wrapping layer wraps the periphery of the aerosol generating substrate section and the periphery of the functional section, and a side hole is formed at the position of the wrapping layer between the aerosol generating substrate section and the filtering section.

2. An aerosol-generating article according to claim 1, wherein at least one of the outer peripheral surface of the cooling section and the outer peripheral surface of the support section is formed with ventilation holes, the ventilation holes being aligned with and communicating with the side holes.

3. An aerosol-generating article according to claim 1, wherein at least one of the cooling section and the support section is formed with a hollow passage through both end faces in the longitudinal direction.

4. An aerosol-generating article according to claim 3, wherein the hydraulic diameter of the hollow channel of the support section is not greater than the hydraulic diameter of the hollow channel of the cooling section.

5. An aerosol-generating article according to claim 3, wherein vent holes are formed in portions of both the outer peripheral surface of the cooling section and the outer peripheral surface of the support section aligned with the side holes, the vent holes communicating the side holes with the hollow passage.

6. An aerosol-generating article according to claim 3, wherein at least one of the cooling section and the support section is formed with side channels extending through both end faces in the longitudinal direction, the side channels being located laterally outside the hollow channel.

7. An aerosol-generating article according to claim 6, wherein a flavour-generating substance is provided in the side channel.

8. An aerosol-generating article according to claim 6, wherein the number of side channels is a plurality, the plurality of side channels being spaced around the periphery of the hollow channel.

9. An aerosol-generating article according to claim 1, wherein the aerosol-generating substrate section, the cooling section, the support section and the filter section are each of cylindrical structure having the same outer diameter, central axes of the aerosol-generating substrate section, the cooling section, the support section and the filter section each overlap in the longitudinal direction, the cooling section is formed with hollow passages passing through both end faces in the longitudinal direction, with a plane perpendicular to the longitudinal direction as a projection plane, and a projection of the hollow passages of the cooling section is circular.

10. An aerosol-generating article according to claim 9, wherein the support section is formed with hollow channels passing through both end faces in the longitudinal direction, the hollow channels of the support section having a hydraulic diameter equal to the hydraulic diameter of the hollow channels of the cooling section.

11. An aerosol-generating article according to claim 1, wherein the filter segment is formed with a resistance-reducing channel through at least one end in the longitudinal direction.

12. An aerosol-generating article according to claim 1, wherein the surrounding layer defines an empty space as a cavity, and the surrounding layer defines the side holes in a wall surface defining the cavity;

The cavity is arranged between the filtering section and the cooling section, and/or the cavity is arranged between the cooling section and the supporting section.

13. An aerosol-generating article according to claim 1, wherein the side holes have a hydraulic diameter of 0.1mm to 0.7mm.

14. An aerosol-generating article according to claim 1, wherein the number of side holes is plural, and the plurality of side holes are arranged at intervals in the circumferential direction to constitute an air intake group.

15. An aerosol-generating article according to claim 14, wherein the number of air inlet groups is from 1 to 7, and/or,

The number of side holes in each of the intake groups is 2 to 16.

16. An aerosol-generating article according to claim 14, wherein the number of air inlet groups is a plurality, the plurality of air inlet groups being longitudinally spaced apart, the distance between adjacent two air inlet groups being not less than 0.5mm.