Cigarette core of smoke stable type heating cigarette and design method thereof

Abstract

The invention discloses a cigarette core of a smoke stable type heating cigarette and a design method of the cigarette core, the cigarette core comprises a plurality of layers which are sequentially distributed from inside to outside in the radial direction of the cigarette core, and the adjacent layers are connected at the interface; each layer is made of a mixture of one tobacco leaf raw material or a mixed raw material of several tobacco leaf raw materials and feed liquid, the tobacco leaf raw materials or the mixed raw materials used by each layer are different, and the adsorption performance of the tobacco leaf raw materials or the mixed raw materials used by each layer is gradually enhanced or gradually weakened from the inner layer to the outer layer; and the composition components of the feed liquid used in each layer are the same or different. According to the heating cigarette, the cigarette core of the heating cigarette is creatively designed to be of the layered structure, according to the adsorption performance of each tobacco leaf raw material in the cigarette core formula, each tobacco leaf raw material is reasonably arranged in the corresponding layer, a way is provided for uniform release of fuming components, aroma components and the like in the cigarette core, and the experience of smokers can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heated cigarettes, and specifically, to a tobacco core of a heated cigarette with stable smoke and its design method. Background Art

[0002] With the strengthening of the global tobacco control trend and the improvement of public health awareness, heated cigarettes, as a new type of tobacco product, release smoke by heating rather than burning, which can significantly reduce the generation of harmful substances and thus attract wide attention in the market. The tobacco core of a heated cigarette, as the carrier for aerosol generation, has a direct impact on the smoke release characteristics and the smoking experience of consumers. Generally, a liquid flavor is added to the tobacco raw materials of the tobacco core of a heated cigarette to enhance the fragrance and keep the moisture of the tobacco core. The adsorption performance of the tobacco raw materials for the liquid flavor will directly affect the release of the smoke components during the smoking of the finished cigarette. At present in the market, the structure of the tobacco core material of heated cigarettes is relatively single. Most products use uniformly mixed tobacco raw materials added with liquid flavor and then processed into core materials. Since different tobacco raw materials have different adsorption performances for the liquid flavor, the amount of liquid flavor adsorbed by each tobacco raw material is different, resulting in the situation that only one or several types of tobacco raw materials with more adsorbed liquid flavor generate smoke and fragrance when heated during the previous puff, and one or several types of tobacco raw materials with less adsorbed liquid flavor also generate smoke and fragrance when heated during the next puff. Then, the smoke volume and smoke fragrance of adjacent puffs will be different, that is, the smoke volume and smoke fragrance are unstable, affecting the smoking experience of smokers. Summary of the Invention

[0003] To solve at least one aspect of the above problems, the present invention provides a tobacco core of a heated cigarette with stable smoke and its design method.

[0004] In a first aspect, the present application provides a tobacco core of a heated cigarette with stable smoke, including several layers distributed in sequence from the inside to the outside along the radial direction of the tobacco core, and adjacent layers are connected at their interfaces; each layer is made of a mixture of one type of tobacco raw material or a mixture of several types of tobacco raw materials and a liquid flavor, and the tobacco raw materials or the mixture of raw materials used in each layer are different. The adsorption performance of the tobacco raw materials or the mixture of raw materials used in each layer gradually increases or gradually decreases from the inner layer to the outer layer, and the composition of the liquid flavor used in each layer is the same or different. Among them, for a tobacco core in which the adsorption performance of the tobacco raw materials or the mixture of raw materials used in each layer gradually increases from the inner layer to the outer layer, it is applicable to the surrounding heating method, and for a tobacco core in which the adsorption performance of the tobacco raw materials or the mixture of raw materials used in each layer gradually decreases from the inner layer to the outer layer, it is applicable to the central heating method.

[0005] Preferably, the adsorption performance of the tobacco raw materials or the mixture of raw materials used in each layer of the tobacco core gradually decreases from the inner layer to the outer layer, which helps to reduce the occurrence of stains on the side of the cigarette rod, thereby improving the appearance quality of the product.

[0006] Preferably, the number of layers of the tobacco core is 2 to 5 layers.

[0007] Preferably, the number of layers of the tobacco core is three layers, which are an inner layer, a middle layer, and an outer layer in sequence along the radial direction of the tobacco core. The outer peripheral surface of the inner layer is connected to the inner peripheral surface of the middle layer, and the outer peripheral surface of the middle layer is connected to the inner peripheral surface of the outer layer; the inner layer is made of a mixture of a first material and a first liquid material, and the first material is a first tobacco leaf raw material or a mixed raw material of multiple first tobacco leaf raw materials; the middle layer is made of a mixture of a second material and a second liquid material, and the second material is a second tobacco leaf raw material or a mixed raw material of multiple second tobacco leaf raw materials; the outer layer is made of a mixture of a third material and a third liquid material, and the third material is a third tobacco leaf raw material or a mixed raw material of multiple third tobacco leaf raw materials; the adsorption performance of the first material is greater than that of the second material and the adsorption performance of the second material is greater than that of the third material, or the adsorption performance of the first material is less than that of the second material and the adsorption performance of the second material is less than that of the third material; the composition components of the first liquid material, the second liquid material, and the third liquid material are the same or different.

[0008] Preferably, the adsorption performance of the first material is greater than that of the second material and the adsorption performance of the second material is greater than that of the third material.

[0009] Preferably, the composition components of the first liquid material, the second liquid material, and the third liquid material are different.

[0010] Preferably, the components of the liquid material include glycerol and / or propylene glycol.

[0011] In a second aspect, the present application provides a design method for a smoke-stable heated cigarette tobacco core, including the following steps: Step 1: Determine the types of tobacco leaf raw materials in the formula according to the formula of the tobacco core of the heated cigarette confirmed in the previous design work; Step 2: Measure the adsorption performance of each type of tobacco leaf raw material by using the static adsorption method; Step 3: Compare the relationship between the number of types of tobacco leaf raw materials in Step 1 and the preset number. When the number of types of tobacco leaf raw materials is greater than the preset number, perform cluster analysis according to the measurement results of the adsorption performance of each type of tobacco leaf raw material in Step 2, divide several types of tobacco leaf raw materials into the preset number of categories, and sort the adsorption performance of each category of tobacco leaf raw materials from strong to weak; when the number of types of tobacco leaf raw materials is less than or equal to the preset number, sort the adsorption performance of each type of tobacco leaf raw material from strong to weak according to the measurement results of the adsorption performance of each type of tobacco leaf raw material in Step 2; Step 4: According to the comparison results and the adsorption performance sorting results in Step 3, determine the number of layers divided from the inside to the outside along the radial direction of the tobacco core, and determine the types of tobacco leaf raw materials for each layer according to the principle that the adsorption performance of the tobacco leaf raw materials gradually increases from the inner layer to the outer layer of the tobacco core or the principle that the adsorption performance of the tobacco leaf raw materials gradually decreases from the inner layer to the outer layer of the tobacco core.

[0012] Preferably, step 2 includes the following steps: Step 2-1: Take a clean and dry dish, and pour the test solution at the bottom of the dish; Step 2-2: Take m g of each dried tobacco leaf raw material determined in step 1 respectively, lay them flat in the corresponding weighing bottles, and weigh the total mass M0 g of each weighing bottle and the tobacco leaf raw material therein before adsorption; Step 2-3: Open the lids of the weighing bottles in step 2-2 and place them on the upper layer in the dish, seal the dish, evacuate it to a negative pressure state, and then transfer the dish to an oven set at a constant temperature of 100-150°C for 12-48 hours of constant-temperature adsorption; Step 2-4: Take out each weighing bottle, weigh the total mass M g of each weighing bottle and the tobacco leaf raw material therein after adsorption, and calculate the adsorption rate of each tobacco leaf raw material according to m g of the tobacco leaf raw material, the total mass M0 g of the weighing bottle and the tobacco leaf raw material therein before adsorption, and the total mass M g of the weighing bottle and the tobacco leaf raw material therein after adsorption, so as to characterize the adsorption performance of the tobacco leaf raw material.

[0013] Preferably, the preset quantity is 3-5.

[0014] A cigarette core of a smoke-stable heated cigarette and a design method thereof according to the present invention have the following beneficial effects:

[0015] The present application creatively designs the cigarette core of the heated cigarette as a layered structure. According to the adsorption performance of each tobacco leaf raw material in the cigarette core formula, each tobacco leaf raw material is reasonably arranged in the corresponding layer, so that the amount of the liquid material adsorbed by the tobacco leaf raw materials in the area at an equal distance from the center line of the cigarette core is the same, which helps to improve the stability of the smoke volume and smoke fragrance in several adjacent puffs, provides a way for the uniform release of the smoke components and fragrance components of the liquid material in the cigarette core, and thus improves the smoking experience of smokers. In the preferred technical solution, by designing the cigarette core such that the adsorption performance of the tobacco leaf raw materials or mixed raw materials gradually weakens from the inner layer to the outer layer, on the one hand, it can ensure sufficient and stable smoke volume during suction under the condition of central heating, and on the other hand, it can effectively reduce the appearance of stains on the side of the cigarette stick, which helps to improve the appearance quality of the product and thus enhance the market competitiveness of the product. Description of the Drawings

[0016] In order to better understand the above and other objects, features, advantages and functions of the present invention, reference may be made to the embodiments shown in the drawings. The same reference numerals in the drawings refer to the same components. Those skilled in the art should understand that the drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no restrictive effect on the scope of the present invention. The components in the drawings are not drawn to scale.

[0017] Figure 1 Shows a cross-sectional schematic view of a cigarette core of a smoke-stable heated cigarette according to an embodiment of the present invention.

[0018] Description of the Reference Numerals:

[0019] 1. Inner layer; 2. Middle layer; 3. Outer layer. Specific implementation manner

[0020] The exemplary embodiments of the present disclosure will be described below with reference to the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered merely exemplary. Therefore, those of ordinary skill in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted below.

[0021] The term "comprising" and its variations used herein mean open inclusion, i.e., "including but not limited to". Unless otherwise specified, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "an exemplary embodiment" and "an embodiment" mean "at least one exemplary embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects. There may also be other explicit and implicit definitions below.

[0022] To at least partially solve one or more of the above problems and other potential problems, an embodiment of the present disclosure provides a tobacco core of a smoke-stable heated cigarette, which includes several layers sequentially distributed from the inside to the outside along the radial direction of the tobacco core. The number of layers of the tobacco core is preferably 2 to 5 layers, and adjacent layers are connected at their interfaces; each layer is made of a mixture of a tobacco leaf raw material or a mixture of several tobacco leaf raw materials and a liquid material, and the tobacco leaf raw materials or the mixed raw materials used in each layer are all different. For example, the tobacco core includes two layers. The first layer is made of a mixture of tobacco leaf raw material A and liquid material a, and the second layer is made of a mixture of a mixed raw material of tobacco leaf raw materials B and C and liquid material b. The components of the liquid material include glycerol and / or propylene glycol; the adsorption performance of the tobacco leaf raw material or the mixed raw material used in each layer gradually increases or gradually decreases from the inner layer to the outer layer. The composition components of the liquid material used in each layer are the same or different. Among them, the tobacco core in which the adsorption performance of the tobacco leaf raw material or the mixed raw material used in each layer gradually increases from the inner layer to the outer layer is suitable for the peripheral heating method, and the tobacco core in which the adsorption performance of the tobacco leaf raw material or the mixed raw material used in each layer gradually decreases from the inner layer to the outer layer is suitable for the central heating method; preferably, the adsorption performance of the tobacco leaf raw material or the mixed raw material used in each layer of the tobacco core gradually decreases from the inner layer to the outer layer, and the composition components of the liquid material used in each layer are all different. The composition components include components and ratios. The composition components of the liquid material used in each layer being all different includes that both the components and ratios of the liquid material used in each layer are different, and also includes that the components of the liquid material used in each layer are the same and the ratios of the components of the liquid material used in each layer are different. For example, each layer of the liquid material used includes glycerol and propylene glycol, but the ratios of glycerol and propylene glycol in the liquid material used in each layer are different.

[0023] In a preferred embodiment, as Figure 1 shown, the cigarette core has three layers. Along the radial direction of the cigarette core, they are the inner layer 1, the middle layer 2, and the outer layer 3 in sequence. The outer peripheral surface of the inner layer 1 is connected to the inner peripheral surface of the middle layer 2, and the outer peripheral surface of the middle layer 2 is connected to the inner peripheral surface of the outer layer 3. The inner layer 1 is made of a mixture of a first material and a first liquid. The first material is a first tobacco leaf raw material or a mixed raw material of multiple first tobacco leaf raw materials, and the adsorption properties of the multiple first tobacco leaf raw materials are all within a first preset range. The middle layer 2 is made of a mixture of a second material and a second liquid. The second material is a second tobacco leaf raw material or a mixed raw material of multiple second tobacco leaf raw materials, and the adsorption properties of the multiple second tobacco leaf raw materials are all within a second preset range. The outer layer 3 is made of a mixture of a third material and a third liquid. The third material is a third tobacco leaf raw material or a mixed raw material of multiple third tobacco leaf raw materials, and the adsorption properties of the multiple third tobacco leaf raw materials are all within a third preset range. The adsorption property of the first material is greater than that of the second material and the adsorption property of the second material is greater than that of the third material, or the adsorption property of the first material is less than that of the second material and the adsorption property of the second material is less than that of the third material. The compositions of the first liquid, the second liquid, and the third liquid are the same or different. More preferably, the adsorption property of the first material is greater than that of the second material and the adsorption property of the second material is greater than that of the third material, and the compositions of the first liquid, the second liquid, and the third liquid are different.

[0024] The present application also provides a design method for a smoke-stable heated cigarette core, including the following steps:

[0025] Step 1: Determine the types of tobacco leaf raw materials in the formula according to the formula of the cigarette core of the heated cigarette confirmed in the previous design work.

[0026] Step 2: Measure the adsorption properties of each tobacco leaf raw material respectively by the static adsorption method. In a preferred embodiment, Step 2 includes the following steps:

[0027] Step 2-1: Take a clean and dry dish, and pour a test liquid at the bottom of the dish. Specifically, the test liquid is glycerol and / or propylene glycol.

[0028] Step 2-2: Take m g of each dried tobacco leaf raw material determined in Step 1 and lay it flat in the corresponding weighing bottle. The range of m is 1-5 g, and weigh the total mass M0 g of each weighing bottle and the tobacco leaf raw material therein before adsorption.

[0029] Step 2-3: Open the weighing bottle in Step 2-2 and place it on the upper layer inside the drying dish. Seal the drying dish, evacuate it to a negative pressure state, and then transfer the drying dish to an oven set at a constant temperature of 100-150 °C for 12-48 hours of constant-temperature adsorption;

[0030] Step 2-4: Take out each weighing bottle, weigh the total mass M g of each weighing bottle and the tobacco raw material inside it after adsorption, and calculate the adsorption rate of each type of tobacco raw material according to the tobacco raw material m g, the total mass M0 g of the weighing bottle and the tobacco raw material inside it before adsorption, and the total mass M g of the weighing bottle and the tobacco raw material inside it after adsorption, so as to characterize the adsorption performance of the tobacco raw material. The calculation formula for the adsorption rate is as follows:

[0031] 。

[0032] Step 3: Compare the relationship between the number of types of tobacco raw materials in Step 1 and the preset number. The preset number is preferably 3-5. When the number of types of tobacco raw materials is greater than the preset number, perform cluster analysis according to the measurement results of the adsorption performance of each type of tobacco raw material in Step 2, divide several types of tobacco raw materials into the preset number of categories, and sort the adsorption performance of each category of tobacco raw materials from strong to weak. During the cluster analysis process, clustering can be performed according to the preset range. For example, when the preset number is 3, the first preset range is set as A, the second preset range is set as B, and the third preset range is set as C. Classify according to the range where the adsorption rate of each type of tobacco raw material is located. Assume that the types of tobacco raw materials determined in Step 1 include tobacco raw material a, tobacco raw material b, tobacco raw material c, and tobacco raw material d. The adsorption rate of tobacco raw material c is within the range of A, the adsorption rates of tobacco raw material a and tobacco raw material b are both within the range of B, and the adsorption rate of tobacco raw material d is within the range of C. Then, classify tobacco raw material a and tobacco raw material b into one category, and classify tobacco raw material c and tobacco raw material d into separate categories. When the number of types of tobacco raw materials is less than or equal to the preset number, sort the adsorption performance of each type of tobacco raw material from strong to weak according to the measurement results of the adsorption performance of each type of tobacco raw material in Step 2.

[0033] Step 4: According to the comparison results and the sorting results of the adsorption performance in Step 3, determine the number of layers into which the tobacco core is divided from the inside to the outside along its radial direction, that is, when the number of types of tobacco leaf raw materials is less than or equal to the preset number, the number of layers is equal to the number of types of tobacco leaf raw materials, and when the number of types of tobacco leaf raw materials is greater than the preset number, the number of layers is equal to the preset number. And according to the principle that the adsorption performance of the tobacco leaf raw materials in the tobacco core gradually increases from the inner layer to the outer layer or the principle that the adsorption performance of the tobacco leaf raw materials in the tobacco core gradually decreases from the inner layer to the outer layer, determine the types of tobacco leaf raw materials for each layer. For example, the preset number is 3, and it is set according to the adsorption rate from high to low. The first preset range is set as A, the second preset range is set as B, and the third preset range is set as C. The types of tobacco leaf raw materials determined in Step 1 include tobacco leaf raw material a, tobacco leaf raw material b, tobacco leaf raw material c, and tobacco leaf raw material d. The adsorption rate of tobacco leaf raw material c is within range A, the adsorption rates of tobacco leaf raw material a and tobacco leaf raw material b are both within range B, and the adsorption rate of tobacco leaf raw material d is within range C. Then the tobacco core is divided into 3 layers from the inside to the outside along its radial direction. The type of tobacco leaf raw material used in the inner layer is tobacco leaf raw material c, the types of tobacco leaf raw materials used in the middle layer are tobacco leaf raw material a and tobacco leaf raw material b, and the type of tobacco leaf raw material used in the outer layer is tobacco leaf raw material d. Preferably, the types of tobacco leaf raw materials for each layer are determined according to the principle that the adsorption performance of the tobacco leaf raw materials in the tobacco core gradually decreases from the inner layer to the outer layer.

[0034] In a specific embodiment, Step 1: According to the formula of the tobacco core of the heated cigarette confirmed in the previous design work, determine that the types of tobacco leaf raw materials in this formula are reconstituted cut stem, leaf blend, and sheet respectively.

[0035] Step 2: Use the static adsorption method to measure the adsorption performance of reconstituted cut stem, leaf blend, and sheet respectively; specifically include the following steps:

[0036] Step 2-1: Take a clean and dry dish, and pour the test liquid at the bottom of the dish, where the test liquid is glycerol.

[0037] Step 2-2: Take 2 g of dried reconstituted cut stem, leaf blend, and sheet respectively and spread them flat in the corresponding weighing bottles, and weigh the total mass before adsorption of each weighing bottle and the tobacco leaf raw material therein.

[0038] Step 2-3: Open the lids of the weighing bottles in Step 2-2 and place them on the upper layer in the dish, seal the dish and evacuate it to a negative pressure state, and then transfer the dish to an oven set at a temperature of 140 °C for constant-temperature adsorption for 24 hours.

[0039] Step 2-4: Take out each weighing bottle, weigh the total mass after adsorption of each weighing bottle and the tobacco leaf raw material therein, and calculate the adsorption rates of reconstituted cut stem, leaf blend, and sheet to be 24.3%, 16.4%, and 12.4% respectively.

[0040] Step 3: The number of types of tobacco leaf raw materials is 3, and the preset number is 3. According to the measurement results of the adsorption properties of the reconstituted stem cut tobacco, cut filler, and sheet cut tobacco in Step 2, the sorting results of the adsorption properties of the reconstituted stem cut tobacco, cut filler, and sheet cut tobacco from strong to weak are: reconstituted stem cut tobacco > cut filler > sheet cut tobacco.

[0041] Step 4: According to the comparison results and the sorting results of the adsorption properties in Step 3, it is determined that the number of layers into which the cigarette core is divided from the inside to the outside along its radial direction is 3 layers, namely the inner layer 1, the middle layer 2, and the outer layer 3. And according to the principle that the adsorption property of the tobacco leaf raw material gradually weakens from the inner layer to the outer layer of the cigarette core, it is determined that the type of tobacco leaf raw material in the inner layer 1 is reconstituted stem cut tobacco, the type of tobacco leaf raw material in the middle layer 2 is cut filler, and the type of tobacco leaf raw material in the outer layer 3 is sheet cut tobacco.

[0042] The embodiments of the present disclosure have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other ordinary technical personnel in the technical field to understand the present disclosure.

Claims

1. A smoke-stabilized heated cigarette core, characterized in that: It comprises several layers distributed in sequence from the inside to the outside along the radial direction of the cigarette core, and adjacent layers are connected at their interfaces; each layer is made of a mixture of a tobacco leaf raw material or a mixture of several tobacco leaf raw materials and a liquid, and the tobacco leaf raw materials or mixed raw materials used in each layer are different, the adsorption performance of the tobacco leaf raw materials or mixed raw materials used in each layer gradually increases or decreases from the inner layer to the outer layer, and the composition of the liquid used in each layer is the same or different.

2. The smoke-stabilized heated cigarette core according to claim 1, characterized in that: The adsorption performance of the tobacco leaf raw material or mixed raw material used in each layer of the cigarette core gradually weakens from the inner layer to the outer layer.

3. The smoke-stabilized heated cigarette core according to claim 1, characterized in that: The number of layers of the cigarette core is 2 to 5.

4. The smoke-stabilized heated cigarette core according to claim 3, characterized in that: The cigarette core has three layers, which are an inner layer (1), a middle layer (2) and an outer layer (3) in order along the radial direction of the cigarette core. The outer peripheral surface of the inner layer (1) is connected to the inner peripheral surface of the middle layer (2), and the outer peripheral surface of the middle layer (2) is connected to the inner peripheral surface of the outer layer (3). The inner layer (1) is made of a mixture of a first material and a first liquid, the first material being a first tobacco leaf raw material or a mixed material of multiple first tobacco leaf raw materials. The middle layer (2) is made of a mixture of a second material and a second liquid, the second material being a second tobacco leaf raw material or a mixed material of multiple second tobacco leaf raw materials. The outer layer (3) is made of a mixture of a third material and a third liquid, the third material being a third tobacco leaf raw material or a mixed material of multiple third tobacco leaf raw materials. The adsorption performance of the first material is greater than that of the second material and the adsorption performance of the second material is greater than that of the third material, or the adsorption performance of the first material is less than that of the second material and the adsorption performance of the second material is less than that of the third material. The components of the first liquid, the components of the second liquid and the components of the third liquid are the same or different.

5. The smoke-stabilized heated cigarette core according to claim 4, characterized in that: The adsorption performance of the first material is greater than that of the second material, and the adsorption performance of the second material is greater than that of the third material.

6. The smoke-stabilized heated cigarette core according to claim 4, characterized in that: The composition of the first liquid, the composition of the second liquid and the composition of the third liquid are different.

7. A smoke-stabilized heated cigarette core according to any one of claims 1 to 6, characterized in that: The ingredients of the feed liquid include glycerol and / or propylene glycol.

8. A method for designing a smoke-stabilized heated cigarette core, characterized in that: The following steps are involved: Step 1: According to the formula of the heated cigarette core confirmed in the previous design work, determine the type of tobacco raw materials in the formula; Step 2: Using the static adsorption method to measure the adsorption performance of each tobacco leaf raw material; Step 3: Compare the relationship between the number of tobacco leaf raw material types in step 1 and the preset number. When the number of tobacco leaf raw material types is greater than the preset number, perform cluster analysis based on the measurement results of the adsorption performance of each tobacco leaf raw material in step 2, divide several tobacco leaf raw materials into a preset number of categories, and sort the adsorption performance of each category of tobacco leaf raw materials from strong to weak; when the number of tobacco leaf raw material types is less than or equal to the preset number, sort the adsorption performance of each tobacco leaf raw material from strong to weak based on the measurement results of the adsorption performance of each tobacco leaf raw material in step 2; Step 4: According to the comparison results in step 3 and the adsorption performance ranking results, determine the number of layers the cigarette core is divided into from the inside to the outside along its radial direction, and determine the type of tobacco raw materials in each layer according to the principle that the adsorption performance of the tobacco raw materials from the inner layer to the outer layer of the cigarette core gradually increases or the principle that the adsorption performance of the tobacco raw materials from the inner layer to the outer layer of the cigarette core gradually decreases.

9. The method for designing a smoke-stabilized heated cigarette core according to claim 1, characterized in that: The step 2 comprises the following steps: Step 2-1: Take a clean drying dish and pour the test solution into the bottom of the drying dish; Step 2-2: Take mg of each type of dried tobacco leaf raw material determined in step 1, spread them flat in corresponding weighing bottles, and weigh the total mass M0g of each weighing bottle and the tobacco leaf raw material therein before adsorption; Step 2-3: Open the weighing bottle in step 2-2 and place it on the upper layer of the drying dish. After sealing the drying dish, evacuate it and place it in a negative pressure state. Then, place the drying dish in an oven set at a temperature of 100 to 150° C. for constant temperature adsorption for 12 to 48 hours. Step 2-4: Take out each weighing bottle, weigh each weighing bottle and the total mass of the tobacco raw material after adsorption M g, and calculate the adsorption rate of each tobacco raw material according to the tobacco raw material mg, the total mass of the weighing bottle and the tobacco raw material before adsorption M0g and the total mass of the weighing bottle and the tobacco raw material after adsorption M g to characterize the adsorption performance of the tobacco raw material.

10. The method for designing a smoke-stabilized heated cigarette core according to claim 1, characterized in that: The preset number is 3-5.

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