Aerosol generating product and aerosol generating system

Abstract

The present application relates to the technical field of aerosol generation, and provides an aerosol generating product and an aerosol generating system. In the aerosol generating product provided by the present application, an aerosol generating substrate segment comprises at least two substrate portions that have different thermal conductivities and are used for generating an aerosol.

Description

Aerosol-generating article, aerosol-generating system

[0001] Cross-reference to related applications

[0002] This application claims priority to the Chinese patent application No. 202411287681.4, filed on September 13, 2024, entitled “Aerosol-generating article, aerosol-generating system”, the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of aerosol generation, in particular to an aerosol-generating article and an aerosol-generating system. BACKGROUND

[0004] In the heating-not-burning aerosol generation technology, a circumferential heating method is often adopted. The aerosol-generating article is accommodated in a containing cavity of a heating device, and a heating element is arranged on the circumferential side of the containing cavity to heat the aerosol-generating article from the circumferential side. This can maximize the heating area of the aerosol-generating article, improve the utilization rate of the smoking material in the aerosol-generating article, and has the advantages of large amount of smoke and easy maintenance and cleaning. However, there are problems of slow smoking and poor consistency between puffs. SUMMARY

[0005] The present application aims to provide an aerosol-generating article and an aerosol-generating system, which are intended to solve the problems of slow smoking and poor consistency between puffs in the existing aerosol-generating article using the circumferential heating method.

[0006] To achieve the above-mentioned purpose, the present application provides an aerosol-generating article, comprising an aerosol-generating substrate section.

[0007] The aerosol-generating substrate section comprises at least two substrate parts for generating aerosol with different thermal conductivities, and the substrate parts comprise smoking materials.

[0008] In some embodiments, the smoking materials of the substrate parts have different degrees of order filling.

[0009] In some embodiments, the substrate parts comprise a first substrate part and a second substrate part, the smoking material filled in the first substrate part is arranged in disorder, and the smoking material filled in the second substrate part is arranged in order.

[0010] In some embodiments, the thermal conductivity of the first substrate part is higher than that of the second substrate part.

[0011] In some embodiments, the substrate portion further comprises a third substrate portion, the smoking material filled in the third substrate portion, part of which is arranged in disorder and part of which is arranged in order.

[0012] In some embodiments, the thermal conductivity of the third substrate portion is lower than that of the first substrate portion and higher than that of the second substrate portion. In some embodiments, at least part of the substrate portion further comprises a thermal conductivity enhancing material.

[0013] The proportion of the smoking material to the thermal conductivity enhancing material in each substrate portion is different.

[0014] In some embodiments, the aerosol generating substrate section comprises a fourth substrate portion and a fifth substrate portion.

[0015] The fifth substrate portion contains the thermal conductivity enhancing material.

[0016] The fourth substrate portion does not contain the thermal conductivity enhancing material, or the fourth substrate portion contains the thermal conductivity enhancing material, and the proportion of the thermal conductivity enhancing material in the fourth substrate portion is less than that in the fifth substrate portion.

[0017] In some embodiments, the thermal conductivity enhancing material is a metal material, and the metal material is uniformly distributed in the smoking material.

[0018] Or, the thermal conductivity enhancing material is compounded with the smoking material to form an entirety.

[0019] In some embodiments, the smoking material is tobacco shreds, and the tobacco shreds and the thermal conductivity enhancing material are compounded to form a smoking material monomer. Any one of the smoking material monomers is in the shape of a filament, a sheet, a sphere, a cylinder or a particle.

[0020] In some embodiments, the aerosol generating article has a proximal end and a distal end,

[0021] Each of the substrate portions is sequentially arranged along the axial direction of the aerosol generating article.

[0022] From the direction close to the proximal end to the direction close to the distal end, the thermal conductivity of each of the substrate portions gradually decreases.

[0023] In some embodiments, the aerosol generating article further comprises a wrapping member wrapped around the outer periphery of each of the substrate portions, and the wrapping members around the outer periphery of each of the substrate portions have different air permeabilities.

[0024] From the direction close to the proximal end to the direction close to the distal end, the air permeability of the wrapping member around the outer periphery of each of the substrate portions gradually decreases.

[0025] The application also provides an aerosol generating system comprising the aerosol generating article and a matched heating device.

[0026] In some embodiments, the heating device is configured to heat the base material portions of the aerosol generating article in order of decreasing thermal conductivity.

[0027] Compared with the related art, the application has the following advantages:

[0028] The aerosol generating article provided by the application comprises at least two base material portions with different thermal conductivities for generating aerosol. When the aerosol generating article is used, the smoking material of the base material portion with high thermal conductivity is heated first, so that the smoking material is heated quickly, the waiting time of the user is shortened, and a certain amount of smoke can be quickly inhaled by the user in the first puff. The smoking material of the base material portion with low thermal conductivity is heated later, which is beneficial to improving the consistency of the aerosol generating article.

[0029] The aerosol generating system provided by the application has the advantages of fast aerosol generation and good consistency of aerosol in each puff. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as limiting the scope of the application.

[0031] FIG. 1 is a structural schematic view of an aerosol generating article according to an embodiment of the application;

[0032] FIG. 2 is a structural schematic view of an aerosol generating article according to another embodiment of the application;

[0033] FIG. 3 is a structural schematic view of an aerosol generating article according to another embodiment of the application;

[0034] FIG. 4 is a structural schematic view of an aerosol generating system according to an embodiment of the application.

[0035] Reference signs: 1000-aerosol generating article; 100-aerosol generating base material section; 10-first base material portion; 20-second base material portion; 30-third base material portion; 40-fourth base material portion; 50-fifth base material portion; 52-first section; 54-second section; 200-cooling section; 300-filtering section; 400-aerosol generating system; 410-heating device; 420-receiving groove; 430-heating assembly. DETAILED DESCRIPTION

[0036] The application provides an aerosol generating article 1000, for example, a heat-not-burn cartridge, as shown in FIG. 1, comprising an aerosol generating substrate segment 100; the aerosol generating substrate segment 100 comprises at least two substrate portions with different thermal conductivities for generating aerosol, and the substrate portions comprise smoking material.

[0037] In an embodiment, the smoking material can be tobacco raw material, non-tobacco raw material, or both tobacco material and non-tobacco material. In an embodiment, the non-tobacco raw material can be a smoking agent, which can be selected from glycerol, propylene glycol, glycerol triacetate, glycerol diacetate, etc. In an embodiment, the non-tobacco raw material can also be tea, dried tangerine or orange peel, dark plum, sweet potato, licorice, chrysanthemum, etc. In addition, the aerosol generating substrate segment 100 can also comprise essence and spices. The smoking material of the aerosol generating substrate segment 100 can be granular smoking material, filamentous smoking material, or sheet-type smoking material, and the sheet-type smoking material can be prepared by thick pulp method, papermaking method, dry papermaking method, or roller pressing method, etc.

[0038] The circumferential heating method of the related art heats the smoking material from the circumferential side, and the smoking material and the heating component are wrapped by a wrapping member, which does not directly contact the smoking material, and the smoking is slow, and the heating area is large. After the heat for smoking is reached, the smoking is completed in a short time, so the smoking is slow but the consumption is fast, and the consistency of the aerosol generating article as a whole is poor in the whole smoking process.

[0039] To solve this technical problem, the aerosol generating substrate segment 100 is provided to comprise at least two substrate portions with different thermal conductivities for generating aerosol, and the smoking material of the substrate portion with high thermal conductivity is heated first when the aerosol generating article is used, so that the smoking is fast, the waiting time of the user is shortened, and a certain amount of smoke can be quickly inhaled in the first puff. The smoking material of the substrate portion with low thermal conductivity is heated later, and the smoking is slow, which is beneficial to improve the consistency of the aerosol generating article as a whole.

[0040] In some embodiments, the number of substrate portions can be two, three, four or more, the thermal conductivities of the substrate portions are different, and the arrangement order of the substrate portions with different thermal conductivities can be random arrangement or can be arranged in order of thermal conductivity from high to low, for example, arranged in order of thermal conductivity from high to low from the proximal end of the aerosol generating article 1000 close to the mouth to the distal end of the aerosol generating article 1000 close to the mouth, that is, the thermal conductivity of each substrate portion gradually decreases; or arranged in order of thermal conductivity from low to high from the proximal end of the aerosol generating article 1000 close to the mouth to the distal end of the aerosol generating article 1000 close to the mouth, that is, the thermal conductivity of each substrate portion gradually increases. In some embodiments, the arrangement order of the thermal conductivities from high to low from the proximal end of the aerosol generating article 1000 close to the mouth to the distal end of the aerosol generating article 1000 close to the mouth, the substrate portion with high thermal conductivity close to the proximal end is heated first, and can be smoked faster.

[0041] In some embodiments, the thermal conductivity of the substrate portion can be adjusted by adjusting the porosity and air permeability of the smoking material, and the higher the porosity and air permeability, the higher the thermal conductivity; the lower the porosity and air permeability, the lower the thermal conductivity. For example, the porosity and air permeability of irregularly packed smoking material are higher than those of regularly packed smoking material, and thus the smoking material of each substrate portion can be arranged to have different packing order degrees to obtain substrate portions with different thermal conductivities.

[0042] Referring to FIG. 1, in some embodiments, the substrate portion includes a first substrate portion 10 and a second substrate portion 20, the smoking material filled in the first substrate portion 10 is arranged in disorder, and the smoking material filled in the second substrate portion 20 is arranged in order, and the thermal conductivity of the first substrate portion 10 is higher than that of the second substrate portion 20.

[0043] Since the first substrate portion 10 is arranged close to the proximal end of the aerosol generating article 1000, the first substrate portion 10 is located downstream of the aerosol suction direction of the second substrate portion 20, wherein the upstream of the aerosol suction direction refers to the distal end of the aerosol generating article 1000, and the downstream of the aerosol suction direction refers to the proximal end of the aerosol generating article 1000.

[0044] The first substrate portion 10 is located downstream of the second substrate portion 20 in the aerosol suction direction, and the thermal conductivity of the first substrate portion 10 is higher than that of the second substrate portion 20. When the aerosol generating article 1000 is heated in the circumferential direction, the first substrate portion 10 is heated first due to the higher thermal conductivity, which is beneficial to rapid smoking, i.e., the waiting time is shortened, and a certain amount of smoke can be quickly inhaled in the first puff. Then, the second substrate portion 20 with lower thermal conductivity is also heated to generate aerosol, which is beneficial to improve the puff-to-puff consistency of the aerosol generating article 1000 as a whole. For example, a typical aerosol generating article is usually smoked for about 13 puffs. The "puff-to-puff consistency" refers to the smooth change of the amount of smoke in adjacent puffs, without sudden increase or decrease.

[0045] In an embodiment, the smoking material is tobacco shreds. When the aerosol generating article 1000 is used, the tobacco shreds in the first substrate portion 10 smoke first due to the better thermal conductivity of the disordered tobacco shreds. In the first half of the smoking process, the disordered tobacco shreds in the first substrate portion 10 are mainly heated to smoke. In the process of smoking, the ordered tobacco shreds in the second substrate portion 20 have enough heat to smoke. The thermal conductivity of the ordered tobacco shreds is not as good as that of the disordered tobacco shreds. Therefore, the consumption of the ordered tobacco shreds is less in the first half of the smoking process, and the disordered tobacco shreds in the first substrate portion 10 mainly smoke. In the second half of the smoking process, the ordered tobacco shreds in the second substrate portion 20 mainly smoke. This is beneficial to improve the puff-to-puff consistency.

[0046] Referring to FIG. 2, in some embodiments, the substrate portion further includes a third substrate portion 30. The smoking material filled in the third substrate portion 30 is partially arranged in disorder and partially arranged in order. The thermal conductivity of the third substrate portion 30 is lower than that of the first substrate portion 10 and higher than that of the second substrate portion 20.

[0047] By arranging the third substrate portion 30 with intermediate thermal conductivity between the first substrate portion 10 and the second substrate portion 20, the span of the thermal conductivity between the first substrate portion 10, the third substrate portion 30, and the second substrate portion 20 can be reduced, the smoke generation can be more uniform, and the puff-to-puff consistency can be further improved.

[0048] In some embodiments, the thermal conductivity of the substrate portion can also be controlled by adjusting the composition of the smoking material. For example, a thermal conductivity enhancing material such as a metal material can be added to the smoking material. Since the thermal conductivity of the metal material is higher than that of the smoking material, different proportions of the metal material are added to different substrate portions to obtain substrate portions with different thermal conductivities. The proportions of the smoking material and the thermal conductivity enhancing material in each substrate portion are different from each other. The proportions of the smoking material and the thermal conductivity enhancing material can be mass ratios or volume ratios. The higher the proportion of the thermal conductivity enhancing material, the higher the thermal conductivity of the corresponding substrate portion.

[0049] In some embodiments, the metal material can be a food-grade material, including but not limited to a food-grade stainless steel material, silver, copper, gold, aluminum, tungsten, iron, platinum, titanium metal, and the like. The metal material can be added alone in the smoking material of the base material part, so that it is uniformly distributed in the smoking material. The metal material can also be compounded with the smoking material to form an integral addition to the base material part. In some embodiments, the metal material is compounded with the smoking material to form an integral addition to the base material part, which can improve the uniformity of the contact between the metal material and the smoking material, and improve the heat conduction effect. In some embodiments, the smoking material can be tobacco, and the tobacco and the metal material are compounded to form a smoking material monomer. The shape of the smoking material monomer can be any one of a filament, a sheet, a sphere, a cylinder, and a particle, that is, there can be only one shape of the smoking material monomer in the smoking material, or there can be multiple shapes of the smoking material monomer. In some embodiments, the smoking material and the metal material can be compounded together by physical methods such as lamination and adhesion.

[0050] In some embodiments, referring to FIG. 3, the aerosol generating base material section 100 includes a fourth base material part 40 and a fifth base material part 50. The fifth base material part 50 contains the heat conduction enhancement material. The fourth base material part 40 does not contain the heat conduction enhancement material, or the fourth base material part 40 contains the heat conduction enhancement material, and the proportion of the heat conduction enhancement material in the fourth base material part 40 is less than the proportion of the heat conduction enhancement material in the fifth base material part, so that the heat conductivity of the fifth base material part 50 is higher than that of the fourth base material part 40.

[0051] When the aerosol generating article 1000 is heated in the circumferential direction, the fifth base material part 50 is heated first due to its higher heat conductivity, which is beneficial to rapid smoking, that is, the waiting time of the user is shortened, and a certain amount of smoke can be quickly inhaled in the first puff. Subsequently, the fourth base material part 40 with low heat conductivity is also heated to generate aerosol, which is beneficial to improve the consistency from puff to puff.

[0052] In some embodiments, referring to FIG. 3, the fifth base material part 50 includes a first section 52 and a second section 54. In some embodiments, the filling material of the first section 52 can be a composite material formed by compounding the metal material and the smoking material. The filling material of the second section 54 includes both the smoking material alone and the composite material formed by compounding the metal material and the smoking material. Therefore, the heat conductivity of the first section 52 is higher than that of the second section 54, and the fourth base material part 40 does not contain the heat conduction enhancement material, so the heat conductivity is the lowest.

[0053] Thus, the thermal conductivities of the first section 52, the second section 54, and the fourth substrate portion 40 gradually decrease from the direction close to the proximal end of the aerosol generating article 1000 to the direction close to the distal end of the aerosol generating article 1000, the span of the thermal conductivities between the first section 52, the second section 54, and the fourth substrate portion 40 can be reduced, smoke generation can be more uniform, and the consistency of each puff can be further improved.

[0054] When the aerosol generating article 1000 is used, because the thermal conductivity of the first section 52 is higher than that of the second section 54, which is higher than that of the fourth substrate portion 40, when the first section 52 is heated, the second section 54 and the fourth substrate portion 40 are in a heat preservation state, the first section 52 can generate smoke the fastest, and the second section 54 and the fourth substrate portion 40 consume less material because of their lower thermal conductivity; the second section 54 is then heated to generate smoke, and finally the fourth substrate portion 40 is heated. In this way, the smoke generation rate is improved, and the consistency of each subsequent puff is improved.

[0055] In some embodiments, the aerosol generating article 1000 further includes a wrapping member wrapped around the outer periphery of each of the substrate portions, and the wrapping members around the outer peripheries of the substrate portions have different air permeabilities. In an embodiment, the air permeability of the wrapping member corresponds to the thermal conductivity of the substrate portion, that is, the higher the thermal conductivity of the substrate portion, the higher the air permeability of the corresponding wrapping member, and the lower the thermal conductivity of the substrate portion, the lower the air permeability of the corresponding wrapping member. For example, the air permeability of the wrapping member can be adjusted by adjusting the porosity of the wrapping member, that is, the smaller the porosity of the wrapping member, the lower the air permeability of the wrapping member, and the greater the porosity of the wrapping member, the higher the air permeability of the wrapping member. In some embodiments, the wrapping member can be, for example, a wrapping paper, which can be a porous wrapping material or a non-porous wrapping material. The air permeability of the porous wrapping material is higher than that of the non-porous wrapping material.

[0056] In some embodiments, the substrate portions of the aerosol generating article 1000 include multiple sections, the wrapping members around the outer peripheries of the substrate portions of the sections have different air permeabilities, and the air permeabilities of the wrapping members around the outer peripheries of the adjacent substrate portions gradually decrease from the proximal end of the aerosol generating article 1000 to the distal end of the aerosol generating article 1000, that is, the air permeabilities of the wrapping members around the outer peripheries of the substrate portions gradually decrease from the direction close to the proximal end of the aerosol generating article 1000 to the direction close to the distal end of the aerosol generating article 1000, so that when the aerosol generating article 1000 is heated, the substrate portion close to the proximal end is heated first, and then the adjacent substrate portion close to the distal end is heated in turn.

[0057] In some embodiments, each substrate portion can be heated by the same heating element. Due to the different thermal conductivities of each substrate portion, the substrate portion close to the proximal end can be heated first and smoke faster, and the substrate portion close to the distal end can be heated in sequence and smoke relatively slowly. In some embodiments, each substrate portion can be heated by different heating elements. Each substrate portion corresponds to a different heating element. The heating element corresponding to the substrate portion close to the proximal end can be heated first, and the heating element corresponding to the substrate portion close to the distal end can be heated in sequence.

[0058] The air permeability of the wrapping member around the outer periphery of the substrate portion also affects the thermal conductivity of the substrate portion. The higher the air permeability of the wrapping member, the higher the thermal conductivity. The lower the air permeability of the wrapping member, the lower the thermal conductivity. By gradually reducing the air permeability of the wrapping member from the proximal end of the aerosol generating article 1000 to the distal end of the aerosol generating article 1000, the thermal conductivity of the substrate portion can be further ensured to gradually decrease in this direction.

[0059] Referring to FIGS. 1 to 3, the aerosol generating article 1000 can further include a cooling section 200 and a filter section 300.

[0060] In some embodiments, the cooling section 200 is configured to maintain the structure of the heat-not-burn cartridge, and even to adsorb and cool the aerosol gas generated by the aerosol generating substrate section 100 of the heat-not-burn cartridge, so that the aerosol gas generated by the aerosol generating substrate section 100 meets the absorption requirements. In some embodiments, the cooling section 200 can be a hollow tube or other tubular element with holes.

[0061] The filter section 300 is configured to filter and further cool or filter and adsorb harmful substances. In some embodiments, the material of the filter section 300 can be one or more of acetate fiber rods, propylene fiber rods, polylactic acid rods, and paper filter rods.

[0062] The present application also provides an aerosol generating system 400, as shown in FIG. 4, which includes the aerosol generating article 1000 described above and a suitable heating device 410.

[0063] In one embodiment, as shown in FIG. 4, the heating device 410 includes a receiving groove 420 and a heating assembly 430 arranged around the receiving groove 420. In other embodiments, the heating method of the heating device 410 can also be hot air heating, central heating, etc.

[0064] In one embodiment, the heating device 410 is configured to heat each substrate portion of the aerosol generating article 1000 in order of decreasing thermal conductivity. In one embodiment, the heating device 410 is configured to heat each substrate portion of the aerosol generating article 1000 in order of decreasing thermal conductivity.

[0065] In an embodiment, the heating assembly 430 includes a plurality of heating elements arranged along the axial direction of the heating tool 410, each of the plurality of heating elements corresponding to a respective substrate portion of the aerosol generating article 1000 to segmentally heat different substrate portions.

[0066] The aerosol generating system provided by the present application generates aerosol quickly and has good consistency from puff to puff. Industrial applicability

[0067] In the aerosol generating article provided by the present application, the aerosol generating substrate section includes at least two substrate portions for generating aerosol with different thermal conductivities. When the aerosol generating article is used, the smoking material of the substrate portion with high thermal conductivity is heated first to generate smoke quickly, thereby shortening the waiting time of the user and enabling the user to quickly inhale a certain amount of smoke in the first puff. The smoking material of the substrate portion with low thermal conductivity generates smoke later, which is beneficial to improving the overall consistency from puff to puff of the aerosol generating article. The aerosol generating system provided by the present application generates aerosol quickly and has good consistency from puff to puff.

Claims

1. An aerosol-generating article, characterized in that, The aerosol generating article comprises an aerosol generating substrate segment; The aerosol generating substrate segment comprises at least two substrate portions for generating aerosol, each having different thermal conductivity, and each comprising smoking material.

2. An aerosol-generating article according to claim 1, wherein, The smoking material in each of the substrate portions has different degrees of order filling.

3. An aerosol-generating article according to claim 2, wherein, The substrate portions comprise a first substrate portion and a second substrate portion; the smoking material filled in the first substrate portion is arranged in disorder; and the smoking material filled in the second substrate portion is arranged in order.

4. An aerosol-generating article according to claim 3, wherein, The thermal conductivity of the first substrate portion is higher than that of the second substrate portion.

5. An aerosol-generating article according to claim 3 or 4, wherein, The substrate portions further comprise a third substrate portion, and in the smoking material filled in the third substrate portion, part is arranged in disorder and part is arranged in order.

6. An aerosol-generating article according to claim 5, wherein, The thermal conductivity of the third substrate portion is lower than that of the first substrate portion and higher than that of the second substrate portion.

7. An aerosol-generating article according to any one of claims 1 to 6, wherein, At least part of the substrate portions further comprises thermal conductivity enhancing material; The proportion of the smoking material to the thermal conductivity enhancing material in each of the substrate portions is different.

8. An aerosol-generating article according to claim 7, wherein, The thermal conductivity enhancing material is metal material, which is uniformly distributed in the smoking material. Or, the thermal conductivity enhancing material is compounded with the smoking material to form an entirety.

9. An aerosol-generating article according to claim 8, wherein, The smoking material is tobacco shred, which is compounded with the thermal conductivity enhancing material to form smoking material monomers, and any one of the smoking material monomers is in the form of filament, sheet, sphere, cylinder or particle.

10. An aerosol-generating article according to any one of claims 1 to 9, wherein, The aerosol generating article has a proximal end and a distal end, Each of the substrate portions is arranged in sequence along the axial direction of the aerosol generating article. From the direction close to the proximal end to the direction close to the distal end, the thermal conductivity of each of the substrate portions gradually decreases.

11. An aerosol-generating article according to claim 10, wherein, The aerosol generating article further comprises a wrapping member wrapped around the outer periphery of each of the substrate portions, and the wrapping members around the outer periphery of each of the substrate portions have different air permeabilities. From the direction close to the proximal end to the direction close to the distal end, the air permeability of the wrapping member around the outer periphery of each of the substrate portions gradually decreases.

12. An aerosol-generating system comprising: The heating device is configured to heat each of the substrate portions of the aerosol generating article in sequence according to the order of thermal conductivity from high to low.

13. An aerosol-generating system according to claim 12, wherein, ​

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