CN116649614A - An aerosol-generating product - Google Patents

Abstract

The present application relates to an aerosol-generating article comprising an aerosol-generating substrate; a first portion having a first cavity extending therethrough in a first direction; a second portion having a second cavity extending therethrough in a first direction, the first cavity being in communication with the second cavity; the third part is sequentially arranged along the first direction, and aerosol generated by heating the aerosol generating substrate through the heating body can sequentially pass through the first part, the second part and the third part; the aerosol-generating substrate has a pressure drop of P _D 1, the total pressure drop of the first part, the second part and the third part is P _D 2, wherein, P is more than or equal to 0.5 _D 1/P _D 2 is less than or equal to 5. The aerosol-generating article of the application has a good aerosol-releasing smoke effect.

Description

An aerosol-generating product

technical field

The invention relates to the technical field of aerosol generation, in particular to an aerosol generation product.

Background technique

In recent years, aerosol-generating products have attracted the attention of tobacco consumers, and they have risen rapidly around the world, driving a huge change in the world tobacco pattern. As a new type of tobacco, aerosol-generating products, whose aerosol-forming substrates such as tobacco substrates are heated instead of burned, have attracted much attention for their significant advantages of reducing the release of harmful components.

At present, heat-not-burn cigarette products are mainly composed of two parts: cigarettes and heating devices. The shape of cigarettes is basically the same as that of ordinary cigarettes. bring inconvenience.

There is also a new type of tobacco product. The cigarette itself has its own heating source and is easy to carry. Existing self-heating non-burning cigarettes include a self-heating source and a tobacco substrate, wherein the self-heating source is located at the end of the cigarette, such as charcoal, and the tobacco substrate and the self-heating source are wrapped in cigarette paper. Cigarette paper includes aluminum foil and a heat-not-burn paper layer, wherein the aluminum foil wraps the tobacco substrate and the self-heating source, and the paper layer wraps the aluminum foil. After the charcoal is ignited, the aluminum foil transfers heat to the tobacco base, the tobacco base will not burn but its internal volatile components will be released and condensed and atomized to form an aerosol for inhalation.

Cigarette papers improved in order to adapt to heat-not-burn cigarettes are recorded in the prior art. For example, the Chinese patent document with the publication number CN104452479B discloses a composite cigarette paper. Some cigarettes are similar in appearance. When smoking, the heat generated by the burning of the outer cigarette paper heats the shredded tobacco through the aluminum foil layer, and the aroma components and volatile ingredients such as nicotine produced by the shredded tobacco heating and volatilization enter the oral cavity with the suction, thus becoming A unique new tobacco product with low temperature and non-combustion.

Another example is the Chinese patent document whose publication number is CN204224923U, which discloses a cigarette paper with a certain thickness, high air permeability and relatively high grammage, and then aluminum foil is compounded on the cigarette paper through a binder, and then laser, electrostatic Or mechanically punch holes, so that the cigarettes made of the cigarette paper are similar in appearance to the existing cigarettes. After the cigarettes are rolled and formed, the aluminum foil layer directly contacts the shredded tobacco. When ignited, it is heated by the combustion of the cigarette paper layer The aluminum foil is passed to the shredded tobacco, and the volatile ingredients such as aroma components and nicotine produced by heating and volatilizing the shredded tobacco enter the oral cavity with the suction, thus forming a unique new tobacco product.

The main problems of aerosol-generating products are low smoke generation and high aerosol temperature. The reasons mainly include two aspects: on the one hand, aerosol-generating products are heated at a lower temperature than traditional cigarettes, and the aerosol has a higher water content, so they have a higher perceived temperature than traditional cigarette aerosols; on the other hand, the length of aerosol-generating products is shorter, The aerosol path is shortened, resulting in a high temperature of the inlet aerosol. Conventional solid acetate tow in traditional cigarettes has a high aerosol retention rate, resulting in less emissions from aerosol-generating products, which affects consumers' consumption experience.

Contents of the invention

The problem to be solved by the present invention is that the aerosol generating product aerosol has poor smoking effect, and consumers have poor smoking experience.

In order to solve the above problems, the object of the present invention is to provide an aerosol generating product, comprising: an aerosol generating substrate; a first part having a first cavity penetrating through the first part along a first direction; a second part having a first cavity Two cavities, passing through the second part along the first direction, the first cavity communicates with the second cavity; a third part, along the first direction, the aerosol generating matrix , the first part, the second part and the third part are arranged in sequence, and the aerosol generated by the aerosol generating substrate heated by the heating body can pass through the first part, the second part and the The third part; the pressure drop of the aerosol generating substrate is P _D 1, the total pressure drop of the first part, the second part and the third part is P _D 2, wherein, 0.5≤P _D 1/ _PD 2≤5.

With the above solution, the aerosol-generating substrate is heated by the heating body to generate aerosol, and the aerosol flows through the first cavity, the second cavity and the third part in turn for the user to inhale. Within the range of the above-mentioned pressure drop ratio, the smoking effect of the aerosol released by the aerosol-generating product can be effectively improved, and the user experience is good.

The term "aerosol-generating article" is used herein to describe an article comprising an aerosol-forming substrate that can be heated to generate an aerosol and deliver it to a consumer. The term "aerosol-forming substrate" means a substrate capable of releasing volatile compounds upon heating to generate an aerosol. During use, volatile compounds are released from the aerosol-forming substrate by heat transfer. The term 'aerosol-forming substrate' means consisting of or comprising an aerosol-forming substrate capable of releasing volatile compounds when heated to generate an aerosol. "Aerosol-forming substrates may be solid aerosol-forming substrates. Aerosol-forming substrates may include tobacco-containing materials containing volatile tobacco flavor compounds that are released from the substrate upon heating. Aerosol-forming substrates may include non-tobacco materials. Aerosol Forming substrate can comprise aerosol forming agent.Aerosol forming agent can comprise at least one in glycerin and propylene glycol.In the embodiment that aerosol forming substrate is solid aerosol forming substrate, described solid aerosol forming substrate can comprise following One or more of: powder, granules, pellets, chips, macaroni, strips or flakes containing one or more of the following: herb leaves, tobacco leaves, tobacco ribs, reconstituted tobacco, homogenized Tobacco, extruded tobacco and expanded tobacco. The solid aerosol-forming substrate can be in loose form. The aerosol-forming substrate can comprise a rod of the solid aerosol-forming substrate. The wrapping material can surround the rod of the solid aerosol-forming substrate.

In some possible implementation manners, the third part is a non-cavity structure.

In some possible embodiments, _{100Pa≤PD1≤300Pa} .

In some possible embodiments, _{100Pa≤PD1≤200Pa} .

In some possible embodiments, P _D 2 ≤ 250 Pa.

In some possible embodiments, P _D 2 ≤ 100 Pa.

In some possible implementation manners, the outer surface of the second part is provided with a perforation communicating with the second cavity.

In some possible implementation manners, the outer surface of the second part is provided with one or more rows of perforation groups, and each row of the perforation groups includes a plurality of the perforations.

In some possible implementation manners, the number of the perforations is N, where 1≤N≤10.

In some possible implementations, 2≤N≤8.

In some possible implementation manners, the equivalent diameter of the perforation is D, where 0.1mm≤D≤0.5mm.

In some possible embodiments, 0.1mm≤D≤0.4mm.

In some possible implementation manners, the first cavity is a constant-section body, and the second cavity is a constant-section body.

In some possible implementation manners, the equivalent diameter of the first cavity is D1, the equivalent diameter of the second cavity is D2, 1≤D2/D1≤3.

In some possible implementation manners, the equivalent diameter of the first cavity is 2 mm to 4 mm.

In some possible implementation manners, the equivalent diameter of the second cavity is 4 mm to 6 mm.

In some possible implementation manners, both the first part and the second part are filter sticks.

In order to make the above content of the present invention more comprehensible, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings.

Description of drawings

Fig. 1 is a schematic structural view of an aerosol generating product according to an embodiment of the present invention;

Fig. 2 is a graph showing the test results of the suction temperature of the aerosol generating product of the embodiment of the present invention.

Detailed ways

The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be presented in conjunction with a preferred embodiment, it does not mean that the features of the invention are limited to this embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiments is to cover other options or modifications that may be extended based on the claims of the present invention. The following description contains numerous specific details in order to provide a thorough understanding of the present invention. The invention may also be practiced without these details. Also, some specific details will be omitted from the description in order to avoid obscuring or obscuring the gist of the present invention. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

Referring to Fig. 1, the present invention provides an aerosol generating product, comprising: an aerosol generating matrix 1, a first part 2, a second part 3 and a third Part 4. Exemplarily, the aerosol-generating substrate 1 includes, but not limited to, tobacco substances, aerosols, flavoring substances, etc., and the tobacco substances include, but not limited to shredded tobacco, shredded tobacco, tobacco particles and combinations thereof.

The combination order of the aerosol-generating substrate 1 , the first part 2 , the second part 3 and the third part 4 in the manufacturing process is not limited. Exemplarily, the first part 2 , the second part 3 and the third part 4 are molded into one body first, and then combined with the aerosol generating substrate 1 to form an aerosol generating product. In some possible implementations, the aerosol-generating substrate 1 and the first part 2 are combined to form a first combination, the second part 2 and the third part 3 are combined to form a second combination, and then the first combination and the second combination are combined. body connected to form the aerosol-generating article described above.

Exemplarily, the aerosol-generating substrate 1 is opposed to the first part 2 along the first direction. Exemplarily, along the first direction, the first part 2 and the second part 3 abut. Exemplarily, the second part 3 is offset by the third part 4 . Exemplarily, along the first direction, the two ends of the first part 2 are against the aerosol generating substrate 1 and the second part 3 respectively, and the two ends of the second part 3 are respectively against the first part 2 and the third part 4 .

The aerosol-generating substrate 1, the first part 2, the second part 3 and the third part 4 are wrapped into an aerosol-generating product by wrapping, such as aluminum foil paper, the aerosol-generating product is columnar, and the extension direction of the aerosol-generating product Same as the first direction. Exemplarily, the aerosol-generating substrate 1 is a solid aerosol-forming substrate containing tobacco components. The aerosol-generating products do not produce combustion during the working process, which can greatly reduce the release of a large number of harmful substances caused by high-temperature combustion. Exemplarily, the wrapper used for the outer layer of the aerosol-generating product is made of an air-impermeable material. In some possible embodiments, there may also be no wrapper.

Exemplarily, the first part 2 , the second part 3 and the third part 4 are made of acetate fiber. Exemplarily, the first part 2, the second part 3 and the third part 4 are all filter sticks. Exemplarily, the second part 3 is a hollow pipe, which plays a supporting role.

That is, the first part 2, the second part 3, and the third part 4 constitute the filter part of the aerosol generating product. The filter part mainly plays the role of reducing the release of harmful substances and reducing the temperature of the aerosol. Exemplarily, the filter part can effectively reduce the release of harmful substances such as NNK, crotonaldehyde, phenol, HCN, ammonia and BaP. At the same time, the filter part also minimizes the interception of aroma substances, nicotine and other substances.

In this embodiment, the aerosol generating substrate 1 is used for inserting a heating body (not shown in the figure) to generate aerosol for the user to inhale, and the end of the third part 4 not connected to the second part 3 is the suction end. The first part 2 has a first cavity 21, and the first cavity 21 runs through the first part 2 along the first direction; the second part 3 has a second cavity 31, and the second cavity 31 runs through the second part 3 along the first direction; The third part 4 is a non-cavity structure; the first cavity 21 and the second cavity 31 are connected. Exemplarily, the above-mentioned non-cavity structure is that the third part 4 does not include a cavity extending along the first direction.

The aerosol generating substrate 1 is heated by the heating body to generate aerosol, and the aerosol flows through the aerosol channel for the user to inhale, that is, the aerosol flows through the first cavity 21, the second cavity 31 and the third cavity in sequence After 41 hours, it can be inhaled by the user, which can effectively improve the smoking effect of the aerosol released by the aerosol generating product.

In this application, the pressure drop of the aerosol generating substrate is P _D 1, the total pressure drop of the first part 2, the second part 3 and the third part 4 is P _D 2, that is, the total pressure drop of the filter part is P _D 2 . Exemplarily, when the user inhales the aerosol-generating product of the present application, the pressure drop of the aerosol-generating substrate is _PD 1, and the total pressure drop of the first part 2, the second part 3 and the third part 4 is _PD 2, and also That is, the total pressure drop in the filter part is P _D 2 . Wherein, 0.5≦ _PD 1/ _PD 2≦5. The aerosol-generating substrate 1 provides sufficient tobacco substances, and the filter part (the first part 2, the second part 3 and the third part 4) intercepts harmful substances, reduces the temperature of the aerosol, and delivers the tobacco substances to consumers. The pressure drop design of the aerosol generating substrate 1 and the filter part (the first part 2, the second part 3 and the third part 4) is within the above pressure drop parameter ratio range, which can achieve the synergistic effect of aerosol atomization and cooling.

When the ratio of P _D 1/ _PD 2 is too small, that is, when the material and structure of the filter part remain unchanged, the resistance of gas flowing through the aerosol-generating matrix 1 under corresponding conditions is too small, and the corresponding aerosol-generating matrix The total amount of tobacco substances in 1 is too small, corresponding to the fluffy accumulation of tobacco substances in the aerosol-generating matrix, which is more likely to cause quality defects such as loosening or collapsing of the tobacco matrix, and will also cause the aerosol-generating products to release the total amount of aerosol components and the corresponding The amount of aerosol is reduced, which affects the consumer's smoking experience.

When the ratio of P _D 1/P _D 2 is too large, that is, when the material and structure of the filter part remain unchanged, the resistance of gas flowing through the aerosol-generating matrix 1 under corresponding conditions is relatively large, corresponding to aerosol generation There are too many tobacco substances in matrix 1, the filling is too dense, and the overall heating of the tobacco matrix is poor. In addition, in view of the characteristics of the perforated part of the filter in this application, when the consumer inhales, the air will flow more from the resistance. The small filter hole enters, dilutes the concentration of tobacco substances in the aerosol, and also affects the smoking experience of consumers.

Therefore, the design of _0.5≤PD 1/ _PD 2≤5 can better achieve the suction experience of the aerosol-generating product.

Exemplarily, the test method for the above-mentioned pressure drop is as follows: According to the GB/T 22838 national standard, the sample to be tested is completely sealed in the measuring device to ensure that there is no air leakage. When the sample is passed by a stable air flow, and under standard conditions When the flow rate at the output end is 17.5mL/s, measure the static pressure difference across the sample.

In some possible embodiments, _{100Pa≤PD1≤300Pa} . In some possible embodiments, _{100Pa≤PD1≤200Pa} . In some possible embodiments, P _D 2 ≤ 250 Pa. In some possible embodiments, P _D 2 ≤ 100 Pa.

The materials used in the first part 2 , the second part 3 and the third part 4 include but are not limited to acetate tow, acrylic tow, polylactic acid tow, paper and polymers. Through processing, the total pressure drop P _D 2 of the first part 2 , the second part 3 and the third part 4 is within the above parameter range.

In some possible implementations, the cavity part of the aerosol generating product (such as the first cavity 21 and the second cavity 31 ) is perforated to effectively reduce the temperature of the aerosol at the outlet of the aerosol generating product. During the suction process of consumers, air enters the interior of the aerosol-generating product through small holes, and reduces the temperature of the aerosol at the outlet of the aerosol-generating product through air dilution, gas condensation, etc., so as to provide consumers with a good suction experience .

In some possible embodiments, the second cavity 31 of the aerosol-generating article is perforated. The outer surface of the second part 3 is provided with a perforation (not shown) communicating with the second cavity 31 . In some possible implementations, the outer surface of the second part 3 is provided with one or more rows of perforation groups, and each row of perforation groups includes a plurality of perforations. The shape of the perforations on the second cavity 31 includes but not limited to circle, ellipse, strip, etc., the arrangement of holes includes but not limited to one row or multiple rows of holes, and the distribution of holes includes uniform distribution or uneven distribution.

Exemplarily, when the above-mentioned ratio of P _D 1/P _D 2 is too large, the filter part of the present application is perforated, so that when consumers inhale, more air will flow from the filter with less resistance. It enters through the hole in the mouth, dilutes the concentration of tobacco substances in the aerosol, and also affects the smoking experience of consumers. Therefore, the design of _0.5≤PD 1/ _PD 2≤5 can better achieve the suction experience of the aerosol-generating product.

In some possible implementation manners, the number of the above-mentioned perforations is N, where 1≤N≤10. In some possible implementations, 2≤N≤8. In some possible implementations, the equivalent diameter of the perforation is D, where 0.1mm≤D≤0.5mm. For circular perforations, the equivalent diameter of the perforation is the diameter of the circular hole. For non-circular perforation or irregular perforation, the area corresponding to the equivalent diameter of the perforation is equal to the area corresponding to the non-circular perforation or irregular perforation. In some possible embodiments, 0.1mm≤D≤0.4mm. After setting in this way, the temperature of the aerosol at the outlet of the aerosol generating product can be effectively reduced.

The drilling methods of the second cavity 31 include but not limited to mechanical drilling and online laser drilling. Exemplarily, in-line laser drilling is used.

Drilling the second cavity 31 with the online laser drilling technology has the advantage of being easier to adjust than mechanical drilling, and the position, size, quantity, shape, etc. of the holes can be quickly adjusted according to the actual situation. The laser drilling equipment needs to meet high-power conditions to penetrate through the wrapping paper and the cavity wall of the second cavity 31 so that it has a ventilation effect. During the manufacturing process of the aerosol-generating product, when it runs to the position of the laser drilling drum, the high-energy laser converges the light beam to the second cavity 31 through the focusing head, and punches the second cavity 31 . The size and shape of the holes at the second cavity 31 can be adjusted by controlling the time of the laser drilling equipment, the speed of the cigarette machine and other parameters; the number of holes in each row of the second cavity 31 can be adjusted by controlling the frequency of laser drilling; The number of focusing heads of the punching equipment can realize multiple rows of holes.

Wherein, along the first direction, the length of the first cavity 21 is consistent with the length of the first part 2, the length of the second cavity 31 is consistent with the length of the second part 3, and the length of the third cavity 41 is consistent with the length of the third part 4. of the same length.

Wherein, the user sucks the aerosol-generating product to generate aerosol, and the aerosol flows from the "upstream" of the aerosol-generating product to the "downstream" (shown in the direction of A in Fig. 1), along the flow direction of the aerosol, the second part 3 has side The upstream end of the wall and the downstream end of the side wall, the upstream end of the side wall of the second part 3 is arranged facing the first part 2 , and the downstream end of the side wall of the second part 3 is arranged facing the third part 4 .

Exemplarily, referring to FIG. 1 , the first cavity 21 is a constant-section body, the second cavity 31 is a constant-section body, and the third cavity 41 is a constant-section body. That is, the first cavity 21 is in the shape of a hollow column, the second cavity 31 is in the shape of a hollow column, and the second cavity 31 is in the shape of a hollow column.

Exemplarily, the equivalent diameter of the first cavity 21 is D1, and the equivalent diameter of the second cavity 31 is D2. For cavities, the equivalent diameter of the cavity is the diameter of the circular cavity. For a non-circular cavity or an irregular cavity, the area corresponding to the equivalent diameter of the cavity is equal to the corresponding area of the non-circular cavity or the irregular cavity.

Among them, 1.2≤D2/D1≤3. That is, the aperture diameter of the second cavity 31 of the second part 3 is larger than the aperture diameter of the first cavity 21 of the first part 2 . That is, the first cavity 21 of the first part 2 is a "small cavity structure", and the second cavity 31 of the second part 3 is a "large cavity structure".

When D2/D1 is too large, that is, D2 is too large or D1 is too small, too large D2 may cause the strength of the second part 3 to be insufficient to support the insertion of the heating element into the aerosol-generating matrix, resulting in quality problems such as deformation or even breaking of the aerosol-generating product , if D1 is too small, the wall thickness of the first part is too thick, which will increase the interception effect on the aerosol. At the same time, the heat transfer resistance of this part is too large, which is not conducive to aerosol cooling, which may cause the outlet aerosol temperature to be too high and affect consumption. Experience; when D2/D1 is too small, that is, D2 and D1 are synchronously too large or too small, it may also cause insufficient strength of aerosol-generating products or excessive aerosol interception effect and excessive outlet aerosol temperature.

Exemplarily, the equivalent diameter of the first cavity 21 is 2 mm to 4 mm, including 2 mm and 4 mm. More exemplary, the equivalent diameter of the second cavity 31 is 4mm to 6mm, including 4mm and 6mm. Within such parameter ranges, the aerosol generating article of the present invention has a good aerosol smoking effect.

The filter part of the present application (the first part 2, the second part 3 and the third part 4 adopts the combined form of "small cavity structure + large cavity structure + solid core structure", and uses laser drilling to lower the temperature of the aerosol. The wall thickness and strength of the small cavity structure can prevent the axial displacement of the tobacco material that may occur during the insertion of the heating element into the aerosol generating substrate 1, and the heated aerosol passes through the small-volume first cavity 2 to the large-volume first cavity When the pressure in the second cavity 3 decreases, the corresponding temperature decreases, and the sudden change in the flow field is conducive to enhancing the convective heat transfer and promoting the cooling of the aerosol.

In addition, the small thermal resistance corresponding to the thin wall of the large cavity structure is conducive to the cooling of the aerosol. At the same time, combined with the hole in the side wall of the second cavity 3, the water vapor in the aerosol is promoted by the replenishment of cold air during the suction process. Condensation and heat release in advance, further reducing the temperature of the aerosol system at the outlet end of the filter part, and preventing the aerosol from overheating. Exemplarily, the temperature of the aerosol at the outlet end of the filter part is between 40°C and 70°C, including 40°C and 70°C.

In addition, after the gas flow resistance of the third part 4 (or the filter part) of the present application is reduced, it can effectively avoid excessive interception of the aerosol active ingredient.

The content comparison of key aerosol substances and the comparison of aerosol outlet temperature under different pressure drop parameters of the tobacco products in the embodiments of the present application will be described in detail below.

Embodiment one

In this embodiment, the aerosol generating matrix 1 is kept unchanged, and the pressure drop of the filter part is changed to adjust the ratio of _PD1 to _PD2 . Samples 1 to 3 mainly adjust the pressure drop of the filter part by punching holes.

The sample 1 comprises an aerosol-generating substrate 1 , a first cavity 2 , a second cavity 3 and a third portion 4 . The second cavity 3 is a large hollow cellulose acetate filter rod structure, and the outer surface of the second cavity 3 is punched with 3 holes, and the diameter of each hole is 0.3mm. The third part 4 is a solid acetate fiber filter rod structure. The pressure drop _PD 1 of the aerosol generating substrate 1 is 180Pa, the total pressure drop _PD 2 of the filter part is 50Pa, and _PD 1/ _PD 2 is 3.6.

The sample 2 comprises an aerosol-generating substrate 1 , a first cavity 2 , a second cavity 3 and a third portion 4 . The second cavity 3 is a large hollow cellulose acetate filter rod structure, and the outer surface of the second cavity 3 is punched with 5 holes, and the diameter of each hole is 0.3 mm. The third part 4 is a solid acetate fiber filter rod structure. The pressure drop _PD 1 of the aerosol generating substrate 1 is 180Pa, the total pressure drop _PD 2 of the filter part is 40Pa, and _PD 1/ _PD 2 is 4.5.

The sample 3 comprises an aerosol-generating substrate 1 , a first cavity 2 , a second cavity 3 and a third portion 4 . The second cavity 3 is a large hollow acetate filter rod structure, and the outer surface of the second cavity 3 is not perforated. The third part 4 is a solid acetate fiber filter rod structure. The pressure drop P _D1 of the aerosol generating substrate 1 is 180Pa, the total pressure drop of the filter part is P _D2 is 60Pa, and P _D1 /P _D2 is 3.

The above-mentioned aerosol-generating products are used in conjunction with heating appliances. The specific method is: put the above-mentioned aerosol-generating products into the same heating appliance for smoking. One puff, each puff for 2 seconds, the next puff after an interval of 28 seconds, after the 8th puff, the capture ends, and each cigarette captures 8 puffs.

The above-mentioned aerosol-generating products are smoked on a smoking machine with a heating appliance. The smoking machine is a bell-shaped wave suction. The suction scheme is the Canadian deep suction method, and the suction capacity is 55mL. The aerosol was collected, and the aerosol trap was used to determine the content of nicotine and glycerin by gas chromatography.

At the same time, the three samples were smoked on the smoking machine with a heating device, and the thermocouple was fixed at the center of the aerosol outlet of the aerosol-generating product. The thermocouple was connected to the temperature data acquisition system to measure the outlet temperature of the aerosol during smoking.

The different punching methods of the three samples changed the total pressure drop of the filter part, which also affected the value of _PD 1/ _PD 2, and then affected the aerosol content and the outlet temperature of the aerosol. The above suction process was repeated many times, and the content of key components in the aerosol capture and the temperature of the aerosol outlet were measured for the three samples. The average results obtained from multiple measurements are shown in Table 1 below.

Table 1 The content of key substances in the aerosol release and the comparison of the aerosol outlet temperature

See Figure 2 for the maximum temperature of the aerosols at the aerosol outlets of sample 1, sample 2, and sample 3. The maximum temperature of the aerosols is the data measured by thermocouples, that is, the marked points in the figure, and the lines connecting the marked points are only for temperature Changes are indicative and do not represent real temperature changes.

It can be seen from Table 1 that the aerosol generating products of sample 1, sample 2, and sample 3 have good aerosol smoke effect, and the aerosol outlet temperature meets the requirements.

Embodiment two

The control filter part remains unchanged, and the pressure drop of the aerosol-generating substrate is changed to adjust the ratio of _PD 1 to _PD 2, and the control sample is sample 1.

Sample 4 includes an aerosol-generating substrate 1 , a first cavity 2 , a second cavity 3 and a third part 4 , and its internal structure and perforation method are consistent with those of sample 1 . The pressure drop P _D 1 of the aerosol generating substrate 1 is 210Pa, the total pressure drop of the filter part is P _D 2 is 50 Pa, and P _D 1/P _D 2 is 4.2. The pressure drop of aerosol-generating substrate 1 in sample 4 was increased by increasing the amount of tobacco substance compared to sample 1 .

Table 2 Content comparison of key substances in aerosol emissions

Embodiment Three

In this embodiment, the aerosol generating matrix 1 is controlled unchanged, and the pressure drop of the filter part is changed to adjust the ratio of _PD 1 to _PD 2. Samples 5 and 6 mainly change the structure of the second cavity 3 and the third part 4 material to adjust the pressure drop in the filter part.

The sample 5 comprises an aerosol-generating substrate 1 , a first cavity 2 , a second cavity 3 and a third portion 4 . The second cavity 3 is a small hollow acetate filter rod structure, because the wall of the cavity filter tip is thicker, no punching process is performed. The third part 4 is a solid acetate fiber filter rod structure. The pressure drop _PD 1 of the aerosol generating substrate 1 is 180Pa, the total pressure drop _PD 2 of the filter part is 150Pa, and _PD 1/ _PD 2 is 1.2.

Sample 6 comprises an aerosol-generating substrate 1 , a first cavity 2 , a second cavity 3 and a third portion 4 . The second cavity 3 is the same as the sample 5, which is a small hollow acetate filter rod structure without perforation. The third part 4 is a solid acetate fiber filter rod structure, and the pressure drop is larger than that of sample 5. The pressure drop _PD 1 of the aerosol generating substrate 1 is 180Pa, the total pressure drop _PD 2 of the filter part is 220Pa, and _PD 1/ _PD 2 is 0.8.

Compared with sample 1, the structure of the filter part of sample 5 has changed. Although only the structure of the second cavity 3 has changed, the value of _PD 2 has increased a lot. Further, the pressure drop of the third part 4 of sample 5 was increased to form sample 6, and the _PD 2 value of sample 6 increased.

Table 3 Content comparison of key substances in aerosol emissions

The above experimental results show that the aerosol generating product of the present invention has a good effect of releasing aerosol smoke.

Claims (17)

1. An aerosol-generating product, characterized in that it comprises: aerosol-generating substrates; a first part, having a first cavity, passing through the first part along a first direction; a second part, having a second cavity, passing through the second part along the first direction, and the first cavity communicates with the second cavity; The third part, along the first direction, the aerosol generating substrate, the first part, the second part and the third part are arranged in sequence, and the aerosol generating substrate is heated by the heating body the aerosol is capable of sequentially passing through the first portion, the second portion, and the third portion; The pressure drop of the aerosol generating substrate is P _D 1 , the total pressure drop of the first part, the second part and the third part is P _D 2 , wherein, 0.5≤P _D 1/P _D 2 ≤5. 2. The aerosol-generating article of claim 1, wherein the third portion is a non-cavity structure. 3. An aerosol-generating article according to claim 1 or 2, wherein 100Pa < P _D 1 < 300Pa. 4. The aerosol-generating article of claim 3, wherein 100Pa < P _D 1 < 200Pa. 5. An aerosol-generating article according to any one of claims 1 to 4, wherein P _D2≤250Pa . 6. The aerosol-generating article of claim 5, wherein _PD2≤100Pa . 7. The aerosol-generating article according to any one of claims 1 to 6, wherein the outer surface of the second part is provided with a perforation communicating with the second cavity. 8. The aerosol-generating article of claim 7, wherein the outer surface of the second portion is provided with one or more rows of perforation groups, each row of the perforation groups comprising a plurality of the perforations. 9. The aerosol-generating article of claim 7, wherein the number of perforations is N, where 1≤N≤10. 10. The aerosol-generating article of claim 9, wherein 2≤N≤8. 11. The aerosol-generating article according to any one of claims 1 to 10, wherein the equivalent diameter of the perforation is D, wherein 0.1mm≤D≤0.5mm. 12. The aerosol-generating article of claim 11, wherein 0.1 mm < D < 0.4 mm. 13. The aerosol-generating article according to any one of claims 1 to 12, wherein the first cavity is of constant cross-section and the second cavity is of constant cross-section. 14. The aerosol generating product according to claim 13, wherein the equivalent diameter of the first cavity is D1, the equivalent diameter of the second cavity is D2, 1≤D2/D1≤ 3. 15. The aerosol-generating article according to any one of claims 1 to 14, wherein the equivalent diameter of the first cavity is 2 mm to 4 mm. 16. An aerosol-generating article according to any one of claims 1 to 15, wherein the equivalent diameter of the second cavity is 4 mm to 6 mm. 17. An aerosol-generating article according to any one of claims 1 to 16, wherein the first part and the second part are filter sticks.