Aerosol generating substrate as well as preparation method and application thereof

Abstract

The invention provides an aerosol generating substrate as well as a preparation method and application thereof, and relates to the technical field of heating non-combustion cigarettes. The cigarette core material of the aerosol generating substrate comprises a tobacco material and a paper sheet, the tobacco material is used for providing tobacco experience feeling, and a smoking agent is added into the paper sheet to provide higher smoke concentration, so that the aerosol generating substrate is high in smoke concentration and strong in atomization characteristic, and has better tobacco experience feeling; and the technical characteristic of combination of atomization and HNB characteristics can be fully exerted. According to the preparation method of the aerosol generating substrate, the heating non-combustion cigarette prepared by the method has the advantages of strong atomization characteristic, better physiological satisfaction, small offensive odor and the like, and the technical characteristic of combination of atomization and HNB characteristics can be fully exerted; the smoke cartridge can be matched with various external source type heating devices such as ring type heating devices, center heating devices, ring type and center heating devices and air heating devices, and the applicability is wide.

Description

Technical Field

[0001] The present application relates to the technical field of heat-not-burn cigarettes, and in particular to an aerosol generating substrate and a preparation method and application thereof. Background Art

[0002] The existing heat-not-burn cigarettes mainly use tobacco flakes, shredded tobacco, shredded stems, and particles in an ordered or disordered arrangement. In the ordered arrangement, a single type of tobacco flakes is often used as the smoke-generating material. Due to different processes, tobacco flakes are divided into thick pulp tobacco flakes, papermaking tobacco flakes, roller-pressed tobacco flakes, dry tobacco flakes, or papermaking thick pulp tobacco flakes, etc. The main raw materials are tobacco leaves, tobacco shreds, tobacco rods, tobacco stems, etc. Therefore, the existing heat-not-burn cigarettes have a stronger tobacco experience, which is better than electronic atomization products, but the smoke concentration is not high in comparison. Summary of the invention

[0003] The purpose of the present application is to provide an aerosol generating substrate and a preparation method and application thereof, so as to solve the problem that the existing heat-not-burn cigarettes have a strong tobacco experience but a low smoke concentration.

[0004] To achieve the above objectives, this application adopts the following technical solutions:

[0005] The present application first provides an aerosol generating matrix, comprising: a first core material and a second core material arranged side by side to fill the aerosol generating matrix, the first core material and the second core material both running through both ends of the aerosol generating matrix in the length direction; the first core material is a tobacco material, the second core material is a non-tobacco material, the second core material comprises a paper sheet, the mass proportion of the smoke generating agent in the paper sheet is 5%-95%, and the mass proportion of the total plant alkaloids is 0-5%.

[0006] Preferably, the first cigarette core material and the second cigarette core material are arranged in an orderly manner along the length direction of the aerosol generating substrate;

[0007] Preferably, the shapes of the first tobacco core material and the second tobacco core material include: plain weave, embossed weave, mesh weave or cut into wires.

[0008] Preferably, the first core material and the second core material are not intermixed with each other, and on the cross section of the aerosol generating substrate, the cross section boundary line of each core material contains a partial arc of the cross section of the aerosol generating substrate.

[0009] Preferably, the second cigarette core material further comprises natural plant sheets;

[0010] Preferably, the natural plant sheet is selected from any one or two of papermaking tea sheets and thick pulp method mugwort leaves.

[0011] Preferably, the arrangement of the tobacco material, the paper sheet material and the natural plant sheet material in pairs is the same as the arrangement of the first core material and the second core material.

[0012] Preferably, the mass proportions of the tobacco material, the paper sheet and the natural plant sheet are independently 5% to 95%;

[0013] Preferably, the tobacco material accounts for 15-75% by mass, the paper sheet accounts for 25-70% by mass, and the natural plant sheet accounts for 5%-15% by mass.

[0014] Preferably, the aerosol generating substrate has at least one through hole formed throughout its length.

[0015] Preferably, in the cross section of the aerosol generating substrate, the total area of ​​the through holes does not exceed 30% of the area of ​​the first core material and the second core material.

[0016] The present application also provides a method for preparing the above-mentioned aerosol generating substrate, comprising:

[0017] preparing the first cigarette core material and the second cigarette core material respectively;

[0018] The first cigarette core material and the second cigarette core material are rolled into the aerosol generating matrix by stacking or feeding in parallel.

[0019] The present application also provides the use of the above-mentioned aerosol generating substrate in the preparation of heat-not-burn cigarettes.

[0020] Compared with the prior art, the beneficial effects of this application include:

[0021] The cigarette core material of the aerosol generating matrix provided in the present application includes tobacco material and paper sheet material. The tobacco material is used to provide a tobacco experience. The paper sheet material provides a higher smoke concentration by adding a smoke generating agent, so that the aerosol generating matrix of the present application has a high smoke concentration and a strong atomization characteristic, and has a good tobacco experience, and can give full play to the technical characteristics of combining atomization with HNB characteristics. The preparation method of the aerosol generating matrix provided in the present application, the heat-not-burn cigarette prepared by the method has the advantages of strong atomization characteristics, better physiological satisfaction and less impurities, and can give full play to the technical characteristics of combining atomization with HNB characteristics. The cigarette bomb can be adapted to a variety of exogenous heating devices such as ring heating, center heating, ring + center heating, and air heating, and has a wide range of applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope of the present application.

[0023] Figure 1 is a cross-sectional schematic diagram of an embodiment of the aerosol generating substrate of the present invention;

[0024] Figure 2 A schematic cross-sectional view of another embodiment of the aerosol generating substrate of the present invention;

[0025] Figure 3 A schematic diagram of an orderly arrangement of the core material of the aerosol generating substrate of the present invention;

[0026] Figure 4 A cross-sectional schematic diagram of another embodiment of the aerosol generating substrate of the present invention;

[0027] Figure 5 is a cross-sectional schematic diagram of another embodiment of the aerosol generating substrate of the present invention;

[0028] Figure 6 is a longitudinal cross-sectional view of the aerosol generating substrate of the present invention;

[0029] Figure 7 It is a transverse cross-sectional view of the aerosol generating substrate of the present invention.

[0030] Reference numerals:

[0031] Aerosol generating matrix-100; cigarette core material-10; tobacco flakes, tobacco material-11; paper sheet-12; natural plant sheet-13; through hole-20; anti-seepage wrapping layer-30; shaping paper-40. DETAILED DESCRIPTION

[0032] As used herein:

[0033] "Prepared from" is synonymous with "comprising." As used herein, the terms "comprising," "including," "having," "containing," or any other variation thereof, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises the listed elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

[0034] The conjunction "consisting of excludes any unspecified element, step, or component. If used in a claim, this phrase renders the claim closed-ended so that it does not include materials other than those described, except for conventional impurities associated therewith. When the phrase "consisting of" appears in a clause of the body of a claim rather than immediately following the subject matter, it limits only the elements described in that clause; other elements are not excluded from the claim as a whole.

[0035] When an amount, concentration, or other value or parameter is expressed as a range, a preferred range, or a range defined by a series of upper preferred values ​​and lower preferred values, this should be understood as specifically disclosing all ranges formed by any pairing of any range upper limit or preferred value with any range lower limit or preferred value, regardless of whether the range is disclosed separately. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted as including ranges "1 to 4", "1 to 3", "1 to 2", "1 to 2 and 4 to 5", "1 to 3 and 5", etc. When a numerical range is described in this article, unless otherwise stated, the range is intended to include its end values ​​and all integers and fractions within the range.

[0036] The present application first provides an aerosol generating substrate 100, see Figure 1 and Figure 2 , including: a first core material and a second core material arranged side by side to fill the aerosol generating matrix 100, the first core material and the second core material both pass through the two ends of the length direction of the aerosol generating matrix 100; the first core material is a tobacco material, for example, a tobacco sheet 11, the second core material is a non-tobacco material, the second core material includes a paper sheet 12, the mass proportion of the smoke agent in the paper sheet 12 is 5%-95%, and the mass proportion of the total plant alkaloids is 0-5%. Among them, the smoke agent and the total plant alkaloids in the paper sheet 12 are added during the preparation process.

[0037] The aerosol generating substrate 100 is usually referred to as the core segment or smoke segment of the heat-not-burn cigarette. In addition, the heat-not-burn cigarette also includes a cooling segment and a filter segment. The core material 10 of the aerosol generating substrate 100 of the present application includes a tobacco material and a paper sheet 12. The tobacco material is used to provide a tobacco experience. The paper sheet 12 provides a higher smoke concentration by adding a smoke generating agent, so that the aerosol generating substrate 100 of the present application has a high smoke concentration and a strong atomization characteristic, and has a good tobacco experience.

[0038] The length direction of the aerosol generating substrate 100 refers to the aerosol flow direction of the heat-not-burn cigarette when it is inhaled, and the first wick material and the second wick material both run through both ends of the length direction of the aerosol generating substrate 100, that is, the first wick material and the second wick material are arranged side by side in the length direction of the aerosol generating substrate 100. The first wick material and the second wick material can be arranged in an orderly or disordered manner.

[0039] Among them, the tobacco material can be a tobacco sheet 11 loaded with a smoke generating agent and total alkaloids, and the tobacco sheet 11 can be a rollable sheet made by dry method, thick pulp, rolling, papermaking and a combination of multiple processes. The paper sheet 12 can be a rollable paper sheet such as glued dust-free paper, all-cotton spunlace non-woven fabric, etc. The mass proportion of the smoke generating agent in the paper sheet 12 is 5%-95%, and the mass proportion of the total alkaloids is 0-5%, thereby providing a higher smoke concentration. The cigarette bomb prepared by the aerosol generating matrix 100 can be adapted to a variety of exogenous heating devices such as ring heating, center heating, ring + center heating, air heating, etc., and has a wide range of applicability.

[0040] See also Figure 1 The cross-sections of the tobacco sheet 11 and the paper sheet 12 may be symmetrical with the cross-section center of the aerosol generating substrate 100 as the center, so that the tobacco sheet 11 and the paper sheet 12 are arranged symmetrically and regularly. Figure 2 The cross sections of the tobacco sheet 11 and the paper sheet 12 may not form a centrally symmetrical pattern with the cross section center of the aerosol generating substrate 100 as the center, so that the tobacco sheet 11 and the paper sheet 12 are not arranged in a symmetrical regular pattern.

[0041] In a preferred embodiment, the first cigarette core material and the second cigarette core material are both arranged in an orderly manner along the length direction of the aerosol generating substrate 100; the orderly arranged cigarette core material 10 is more convenient for preparing the aerosol generating substrate 100.

[0042] Optionally, see Figure 3 The shapes of the first cigarette core material and the second cigarette core material include: plain, embossed, mesh or cut into wires.

[0043] Among them, plain grain means that the core material is not pressed into wrinkles by an embossing roller, and the core material is a whole piece; embossed grain means that the core material is pressed into wrinkles by an embossing roller, but the material is not cut; mesh grain means that the core material is pressed into wrinkles by an anilox roller, and the material is cut intermittently; cutting into filaments means that the core material is cut into filaments of a certain width by a slitting roller, and the filaments are separated and not sticky.

[0044] In a preferred embodiment, please continue to refer to Figure 1 and Figure 2, the first core material and the second core material are not mixed with each other, that is, the tobacco sheet 11 and the paper sheet 12 are separated from each other, and on the cross-section of the aerosol generating matrix 100, the cross-sectional boundary line of each core material contains a partial arc of the cross-section of the aerosol generating matrix 100, that is, the physical filling positions of the tobacco sheet 11 and the paper sheet 12 are not in a form of surrounding each other.

[0045] Preferably, see Figure 4 and Figure 5 , the second cigarette core material includes a natural plant sheet 13 in addition to the paper sheet 12; the natural plant sheet 13 is selected from any one or two of papermaking tea sheets and thick pulp wormwood sheets. The natural plant sheet 13 can provide a characteristic fragrance for the aerosol generating matrix 100, and the fragrance is rich. The natural plant sheet 13 can also carry a smoke-generating agent, but the proportion of the smoke-generating agent in the natural plant sheet 13 is as high as 30%. At this time, oily substances are prone to seepage, and the adsorption capacity is poor. Therefore, the natural plant sheet 13 mainly plays the role of releasing the characteristic fragrance of the style and enriching the fragrance.

[0046] Preferably, please continue to see Figure 4 and Figure 5 , the arrangement of the tobacco material 11, the paper sheet 12 and the natural plant sheet 13 is the same as the arrangement of the first core material and the second core material. That is, the arrangement of the tobacco material 11, the paper sheet 12 and the natural plant sheet 13 is to be arranged side by side, not mixed with each other, and separated from each other, and the cross-sectional boundary line of each core material contains a partial arc of the cross-sectional area of ​​the aerosol generating matrix 100.

[0047] In a preferred embodiment, the weight proportions of the tobacco material, the paper sheet and the natural plant sheet are independently 5% to 95%. Preferably, the weight proportion of the tobacco material 11 is 15-75%, the weight proportion of the paper sheet 12 is 25-70%, and the weight proportion of the natural plant sheet 13 is 5% to 15%.

[0048] In a preferred embodiment, see Figure 6 The aerosol generating matrix 100 has at least one through hole 20 formed throughout its length. The through holes 20 form an aerosol channel. The through holes 20 may be randomly distributed and may be in a regular geometric shape or an irregular geometric shape. The through holes 20 may provide an aerosol flow channel. The more channels 20 there are, the smaller the inhalation resistance is, thereby controlling the inhalation resistance of the whole cigarette. The specific implementation means is to control the cross-sectional area of ​​the through holes 20 by controlling the width of the cigarette core material 10 and arranging them in an orderly manner.

[0049] Preferably, see Figure 7 , on the cross section of the aerosol generating substrate 100, the total area of ​​the through holes 20 does not exceed 30% of the area of ​​the first core material and the second core material, that is, the total area of ​​the core material 10. The total area of ​​the core material 10 is the cross-sectional area of ​​the aerosol generating substrate 100 minus the cross-sectional area of ​​the anti-seepage wrapping layer 30 and the plug wrapping paper 40 wrapping material.

[0050] The present application also provides a method for preparing the above-mentioned aerosol generating substrate 100, comprising:

[0051] preparing the first cigarette core material and the second cigarette core material respectively;

[0052] The first cigarette core material and the second cigarette core material are rolled into the aerosol generating matrix 100 by stacking or feeding in parallel.

[0053] The preferred feeding method is the side-by-side method. If there is embossing or cutting into wire pretreatment, the side-by-side method has better processing adaptability, is less likely to stick to the roller than the stacking method, and the material processing is more uniform, and the embossing depth remains more consistent.

[0054] The present application also provides the use of the above-mentioned aerosol generating substrate 100 in the preparation of heat-not-burn cigarettes.

[0055] The embodiments of the present application will be described in detail below in conjunction with specific examples, but it will be appreciated by those skilled in the art that the following examples are only used to illustrate the present application and should not be considered as limiting the scope of the present application. If specific conditions are not specified in the examples, they are carried out according to normal conditions or the conditions recommended by the manufacturer. If the manufacturer is not specified for the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0056] Example 1

[0057] Preparation method of thick pulp tobacco sheet: put smoke agent, fiber slurry, flavors and fragrances, moisture-proof agent and water in a container, use an intermittent shearing machine at 3000r / min to shear the fibers to disperse them, and stir them with a magnetic force. Weigh tobacco material (which can provide total alkaloids), filler, and adhesive, mix them evenly, and pour them into a container to form a thick slurry. Use a shearing machine at 10000r / min to emulsify the slurry for 2 minutes, then vacuum the slurry at a negative pressure of 0.09Mpa for 3 minutes, spread the slurry on a steel belt, and dry it at 90℃ for 15 minutes to obtain a thick pulp tobacco sheet with an absolute dry weight of 210g / m 2 , thickness 0.20mm.

[0058] Preparation method of tea sheet papermaking: extract tea raw materials, concentrate the extract to 40% solid content, add flavors, fragrances, preservatives, etc. to prepare coating liquid. Add 3% wood pulp fiber to the extract residue for PFI refining, control the beating degree at 35-40°SR to make the sheet base, and the absolute dry weight is 50g / m 2 The coating liquid is sprayed or rolled on the sheet base, with a coating rate of 42%, to obtain paper-making tea sheets with an absolute dry weight of 86g / m 2 , thickness 0.22mm.

[0059] Preparation method of paper sheet: It can be prepared by thick pulp method, dry method and non-woven fabric technology. Each embodiment is described by dry airflow forming process. Wood pulp fiber is crushed and dispersed by fiber defibrating equipment under water-free low temperature (less than 50°C) conditions and made into a substrate by dry airflow forming, including breaking up the fiber in the basic former, removing static electricity and applying negative pressure. The absolute dry basis weight of the substrate is 30g / m 2 , thickness 0.20mm, dryness ≥80%. Mix tobacco extract (can provide total alkaloids), flavors and fragrances, smoke agents, adhesives, fillers, moisture-proof agents, and preservatives evenly, then add an appropriate amount of water and stir evenly to form a spray liquid with a concentration of 10%. Spray the spray liquid on one side of the substrate, and there is negative pressure vacuum suction on the other side of the substrate during spraying. Set the spray amount to 25% of the total spray amount; the substrate is dried with hot air after each spraying, the temperature is set to 85°C, and the drying time is 5min; after drying, spray the other side again, and dry again, and the spray amount and drying temperature are kept consistent. Spray four times on both sides and dry four times to obtain a semi-finished paper sheet. According to the drying condition of the semi-finished paper sheet, control the time of the fourth drying to ensure that the moisture content of the semi-finished paper sheet reaches 15%, and calendering is performed. The pressure range of the calendering rubber roller is set to 0.5MPa. After calendering, dry again to make the moisture content reach 12%, and obtain a finished paper sheet with an absolute dry weight of 39g / m 2 , thickness 0.24mm.

[0060] Three materials, thick pulp tobacco sheets (15% smoke agent, 1.7% total alkaloids), papermaking tea sheets (0% smoke agent, 0% total alkaloids), and paper sheets (45% smoke agent, 0.8% total alkaloids), were rolled into base rods by a single-roll side-by-side embossing method in an orderly arrangement. The mass proportion of the base rods is: 35% thick pulp tobacco sheets, 15% papermaking tea sheets, and 50% paper sheets.

[0061] Example 2

[0062] The three materials prepared in Example 1: thick pulp tobacco sheets (15% smoke agent, 1.7% total alkaloids), papermaking tea sheets (0% smoke agent, 0% total alkaloids), and paper sheets (45% smoke agent, 0.8% total alkaloids) were rolled into base rods by a single-roll side-by-side embossing method in an orderly arrangement. The mass proportion of the base rods was: 50% thick pulp tobacco sheets, 15% papermaking tea sheets, and 35% paper sheets.

[0063] Example 3

[0064] The three materials prepared in Example 1: thick pulp tobacco sheets (15% smoke agent, 1.7% total alkaloids), papermaking tea sheets (0% smoke agent, 0% total alkaloids), and paper sheets (45% smoke agent, 0.8% total alkaloids) were rolled into base rods by a single-roll side-by-side embossing method in an orderly arrangement. The mass proportion of the base rods was: 15% thick pulp tobacco sheets, 15% papermaking tea sheets, and 70% paper sheets.

[0065] Example 4

[0066] The two materials prepared in Example 1: thick pulp tobacco sheets (15% smoke agent, 1.7% total alkaloids) and paper sheets (45% smoke agent, 0.8% total alkaloids) were rolled into base rods by a single-roll side-by-side embossing method in an orderly manner. The mass proportion of the base rods was: 50% thick pulp tobacco sheets and 50% paper sheets.

[0067] Example 5

[0068] The two materials prepared in Example 1: thick pulp tobacco sheet (smoking agent 15%, total alkaloids 1.7%) and paper sheet (smoking agent 45%, total alkaloids 0.8%) were cut into wires in an orderly manner by double roller feeding and rolled into base rods to mix the two materials evenly. The base rod mass ratio: thick pulp tobacco sheet 50%, paper sheet 50%.

[0069] Comparative Example 1

[0070] Only the thick pulp tobacco sheet (15% of smoking agent, 1.7% of total alkaloids) prepared in Example 1 was rolled into a base rod in an orderly embossing manner using a single roller side-by-side method.

[0071] Comparative Example 2

[0072] Only the paper-making tea sheet (0% smoke generating agent, 0% total plant alkaloids) prepared in Example 1 was rolled into a base rod in an orderly embossed manner using a single roller side-by-side method.

[0073] Comparative Example 3

[0074] Only the paper sheet prepared in Example 1 (45% smoke generating agent, 0.8% total plant alkaloids) was rolled into a base rod in an orderly embossing manner using a single roller side-by-side method.

[0075] Comparative Example 4

[0076] The two materials prepared in Example 1, namely, thick pulp tobacco sheets (15% smoke agent, 1.7% total alkaloids) and papermaking tea sheets (0% smoke agent, 0% total alkaloids) were rolled into base rods in an orderly embossing manner using a single roller side-by-side method, with the base rods accounting for 50% of the thick pulp tobacco sheets and 50% of the papermaking tea sheets.

[0077] Comparative Example 5

[0078] The two materials prepared in Example 1, papermaking tea sheets (0% smoke agent, 0% total alkaloids) and paper sheets (45% smoke agent, 0.8% total alkaloids) were rolled into base rods in an orderly embossing manner using a single roller side-by-side method, and the base rods accounted for 50% of the papermaking tea sheets and 50% of the paper sheets.

[0079] Comparative Example 6

[0080] The three materials prepared in Example 1: thick pulp tobacco sheets (15% smoke agent, 1.7% total alkaloids), papermaking tea sheets (0% smoke agent, 0% total alkaloids), and paper sheets (45% smoke agent, 0.8% total alkaloids) were cut into short threads and randomly mixed and rolled into base rods according to a certain mass ratio, with the mass proportion of the base rods being: 15% thick pulp tobacco sheets, 15% papermaking tea sheets, and 70% paper sheets.

[0081] Comparative Example 7

[0082] The two materials prepared in Example 1: thick pulp tobacco sheets (15% smoke agent, 1.7% total alkaloids) and paper sheets (45% smoke agent, 0.8% total alkaloids) were cut into short threads and randomly mixed and rolled into base rods according to a certain mass ratio, with the mass proportion of the base rods being 50% of the thick pulp tobacco sheets and 50% of the paper sheets.

[0083] The base rods prepared in Examples 1 to 5 and Comparative Examples 1 to 7 were used to replace the smoke-generating body of the internationally renowned brand HEETS cigarette cartridges to prepare heat-not-burn cigarette cartridge samples. The sample cigarettes were balanced under constant temperature and humidity conditions of (25±2)°C and (35±5)%RH for 4 hours, and the smoke concentration was tested with a heat-not-burn comprehensive tester. The average value of the 3rd to 10th puffs was taken to test the smoke concentration of each cigarette. The results are shown in Table 1, and the internationally renowned brand HEETS cigarette cartridge AMBER amber original flavor was used as the control sample.

[0084] Table 1 Cigarette smoke concentration of each embodiment and comparative example

[0085]

[0086]

[0087] It can be seen from Table 1 that under the condition of ensuring the draw resistance range of (500±50)Pa, compared with the control sample, the smoke concentration of the heat-not-burn cigarettes of Examples 1 to 5 is significantly improved, especially Example 3, with an increase of more than 30%, and Comparative Examples 1 and 3 are also higher than the control sample. The reason is that the weight of the tobacco segment material in the smoke body of Comparative Example 1 is 10% more than that of HEETS, and the smoke agent content of Comparative Example 3 is much more than that of the HEETS cigarette cartridge.

[0088] The two groups of comparative tests of Example 3 and Comparative Example 6, and Example 4 and Comparative Example 7 show that when the weight of the cigarette core is consistent, the disordered arrangement will increase the draw resistance of the cigarette by more than 15%. The disordered distribution makes the aerosol channel inside the cigarette core unsmooth, affecting the release rate of the aerosol. Even a small part of the disordered cigarette core that is not heated near the lip end will filter the smoke and reduce the smoke concentration. The orderly distribution and the aerosol channel provided by the through holes make the release of the aerosol inside the cigarette core smoother. Therefore, the ordered arrangement is better than the disordered arrangement.

[0089] The difference in smoke concentration between Example 4 and Example 5 when the two materials are separated and mixed is not obvious, but the processing difficulty of Example 5 is greater than that of Example 4. Based on cost considerations, the solution of Example 4 is preferred, and the possible application of the solution of Example 5 is not excluded in the future.

[0090] In addition, 7 experts from the smoking evaluation committee were invited to use IQOS 3DUO smoking devices to evaluate and score the heat-not-burn cigarettes of the control sample, Example 1-Example 5, Comparative Example 1, Comparative Example 3, Comparative Example 6 and 7, and the results are shown in Table 2. As can be seen from Table 2, the total scores of the heat-not-burn cigarettes of the embodiments of the present invention are higher than those of the control samples, and Examples 2 and 3 perform best. Although the strength has decreased, the gain effect in terms of smoke concentration and aroma richness is better, and the atomization effect brought by the high smoke concentration is more obvious. The heat-not-burn cigarettes have both the characteristics of electronic cigarettes, the flavor is more comfortable and pleasant, and the combination of tobacco and tea flavors is more harmonious and refreshing. Example 4 only uses two kinds of cigarette core materials, less paper-making tea leaves, and the performance of aroma richness is worse than that of Examples 1-3.

[0091] Comparison of the smoking evaluation results of Example 3 and Comparative Example 6, and Example 4 and Comparative Example 7, shows that the indicators of the ordered arrangement are higher than those of the disordered arrangement. This is because the ordered arrangement has better performance in terms of the release of smoke concentration, thereby increasing the transfer rate of aroma and satisfaction and enhancing the physiological experience of smoking. Therefore, the scores on various indicators are higher.

[0092] The evaluation results of Example 4 and Example 5 comparing the two materials separated and the materials mixed show that the overall scores are relatively close. Considering the feasibility and cost of processing, the scheme of separating the multiple materials is preferred first, and the scheme of shredding the multiple materials and then mixing and arranging them in an orderly manner is not ruled out in the future.

[0093] Table 2 Smoking test results of heat-not-burn cigarettes of various embodiments and comparative examples

[0094]

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0096] In addition, those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the above claims, any one of the claimed embodiments may be used in any combination. The information disclosed in this background technology section is intended only to deepen the understanding of the overall background technology of the present application and should not be regarded as an admission or in any form of implication that the information constitutes prior art known to those skilled in the art.

Claims

1. An aerosol generating substrate, characterized in that include: The first core material and the second core material filling the aerosol generating matrix are arranged side by side, and both the first core material and the second core material run through both ends of the aerosol generating matrix in the length direction; the first core material is a tobacco material, and the second core material is a non-tobacco material, and the second core material includes a paper sheet, and the mass proportion of the smoke generating agent in the paper sheet is 5%-95%, and the mass proportion of the total plant alkaloids is 0-5%.

2. The aerosol generating substrate according to claim 1, characterized in that The first cigarette core material and the second cigarette core material are both arranged in an orderly manner along the length direction of the aerosol generating substrate; Preferably, the shapes of the first tobacco core material and the second tobacco core material include: plain weave, embossed weave, mesh weave or cut into wires.

3. The aerosol generating substrate according to claim 2, characterized in that The first core material and the second core material are not intermixed with each other, and on the cross section of the aerosol generating substrate, the cross section boundary line of each core material contains a partial arc of the cross section of the aerosol generating substrate.

4. The aerosol generating substrate according to any one of claims 1 to 3, characterized in that The second cigarette core material also includes natural plant sheets; Preferably, the natural plant sheet is selected from any one or two of papermaking tea sheets and thick pulp method mugwort leaves.

5. The aerosol generating substrate according to claim 4, characterized in that The arrangement of the tobacco material, the paper sheet material and the natural plant sheet material in pairs is the same as the arrangement of the first cigarette core material and the second cigarette core material.

6. The aerosol generating substrate according to claim 5, characterized in that The mass proportions of the tobacco material, the paper sheet and the natural plant sheet are independently 5% to 95%; Preferably, the tobacco material accounts for 15-75% by mass, the paper sheet accounts for 25-70% by mass, and the natural plant sheet accounts for 5%-15% by mass.

7. The aerosol generating substrate according to claim 1, characterized in that The aerosol generating substrate is formed with at least one through hole throughout its length direction.

8. The aerosol generating substrate according to claim 7, characterized in that In the cross section of the aerosol generating substrate, the total area of ​​the through holes does not exceed 30% of the area of ​​the first core material and the second core material.

9. The method for preparing an aerosol generating substrate according to any one of claims 1 to 8, characterized in that: include: preparing the first cigarette core material and the second cigarette core material respectively; The first cigarette core material and the second cigarette core material are rolled into the aerosol generating matrix by stacking or feeding in parallel.

10. Use of the aerosol generating substrate according to any one of claims 1 to 8 in the preparation of heat-not-burn cigarettes.

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