Heat-not-burn cigarette, tobacco core material, and method for manufacturing the same

Abstract

The application provides a heat-not-burn cigarette, a tobacco core material and a preparation method thereof, relates to the heat-not-burn field, and the tobacco core material of the heat-not-burn cigarette comprises at least two kinds of reconstituted tobacco leaves with different bulk thicknesses. Due to the different bulk thicknesses of the reconstituted tobacco leaves, there are differences in the release of aroma components in smoke during smoking, and the reconstituted tobacco leaves with different bulk thicknesses have different adsorption properties for additives. The reconstituted tobacco leaves with high bulk thickness have loose structures and good absorption properties for additives, but the effective substances in the product are released quickly during smoking, and the aroma and smoke decay obviously after smoking. The reconstituted tobacco leaves with low bulk thickness have poor absorption effects for additives, but the effective substances in the product are released uniformly during smoking, and the aroma and smoke decay is reduced. The scheme combines the characteristics of the reconstituted tobacco leaves with different bulk thicknesses, mixes at least two kinds of reconstituted tobacco leaves with different bulk thickness ranges to obtain the tobacco core material, and develops the tobacco core material with high aroma loading and stable release.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of heat-not-burn, in particular to a heat-not-burn cigarette, a cigarette core material and a preparation method thereof. BACKGROUND

[0002] Traditional cigarettes are under pressure from many aspects such as tobacco control, harm reduction, and consumption upgrading, which makes the new tobacco industry develop rapidly. Heat-not-burn cigarette products, as an important part of the current new tobacco products, can effectively reduce the tar and harmful substances generated by burning due to the heat-not-burn.

[0003] The cigarette core of heat-not-burn cigarette products is mainly reconstituted tobacco. The current heat-not-burn cigarette products show a phenomenon of end attenuation in terms of smoke volume and aroma, which makes the existing heat-not-burn cigarette products have the problems of poor quality, low concentration, weak aroma, and fast attenuation. SUMMARY

[0004] The purpose of the present application is to provide a heat-not-burn cigarette core material, which aims to solve the problem of end attenuation of the existing heat-not-burn cigarette products in terms of smoke volume and aroma, and ensure the stability of the release of heat-not-burn cigarette smoke and aroma.

[0005] To achieve the above purpose, the first aspect of the present application provides a heat-not-burn cigarette core material, which comprises at least two and more reconstituted tobaccos with different bulkiness ranges, wherein the reconstituted tobaccos comprise:

[0006] the bulkiness range of the first reconstituted tobacco is 0.8-1.5 cm 3 / g, the bulkiness range of the second reconstituted tobacco is 1.5-2.1 cm 3 / g, and the bulkiness range of the third reconstituted tobacco is 2.1-4.0 cm 3 / g.

[0007] Preferably, the bulkiness range of the first reconstituted tobacco is 0.9-1.3 cm 3 / g, the bulkiness range of the second reconstituted tobacco is 1.7-2.1 cm 3 / g, and the bulkiness range of the third reconstituted tobacco is 2.1-2.5 cm 3 / g.

[0008] Preferably, the cigarette core material comprises, by weight fraction:

[0009] 60-110 parts of the first reconstituted tobacco;

[0010] 10-30 parts of the second reconstituted tobacco;

[0011] Third reconstituted tobacco leaf 20-50 parts.

[0012] Preferably, the first reconstituted tobacco leaf is prepared by a thick pulp method and / or a roller method;

[0013] The second reconstituted tobacco leaf is prepared by a papermaking method;

[0014] The third reconstituted tobacco leaf is prepared by a dry papermaking method.

[0015] Preferably, the tobacco core material comprises, in parts by weight, at least three and more different reconstituted tobacco leaves prepared by different methods:

[0016]

[0017] Preferably, the reconstituted tobacco leaf is tobacco shred, the width of the tobacco shred is 0.8-1.2 mm, and the length of the tobacco shred is 10-20 mm.

[0018] Preferably, the length of the tobacco shred of the first reconstituted tobacco leaf is 12-18 mm;

[0019] The length of the tobacco shred of the second reconstituted tobacco leaf is 14-22 mm;

[0020] The length of the tobacco shred of the third reconstituted tobacco leaf is 15-20 mm.

[0021] The second aspect of the present application further provides a heat-not-burn tobacco core section, which is filled with a heat-not-burn tobacco core material as described above in disorder, and a smoking agent and a flavor additive mixed in the tobacco core material;

[0022] Preferably, the filling amount of the heat-not-burn tobacco core material is 0.5-0.9 g / ml.

[0023] The third aspect of the present application further provides a preparation method of a heat-not-burn tobacco core section, which comprises mixing a heat-not-burn tobacco leaf material as described above in disorder, adding a flavoring agent and a smoking agent to the mixed tobacco core material, and storing the mixed tobacco core material, and rolling the stored tobacco core material into a tobacco core section using a cigarette paper or a forming paper;

[0024] Preferably, the mixing condition is a temperature of 30-45℃ and a relative humidity of 40-50% RH.

[0025] The storage condition is a temperature of 22-26℃ and a relative humidity of 40-50% RH.

[0026] The fourth aspect of the present application further provides a heat-not-burn cigarette, which comprises a heat-not-burn tobacco core section as described above.

[0027] Compared with the prior art, the present application has the following beneficial effects:

[0028] The heating non-combustion tobacco core material provided by the application scheme comprises at least two kinds of reconstituted tobacco with different bulk densities. Because the reconstituted tobacco with different bulk densities has different release of aroma components in smoke during smoking, and the reconstituted tobacco with different bulk densities has different adsorption performance to additives (flavoring agents, smoke generating agents, etc.), the reconstituted tobacco with high bulk density has good absorption performance to additives and good aroma quality, but the effective substance in the product is released quickly during smoking, resulting in obvious attenuation of aroma and smoke at the end of smoking; and the reconstituted tobacco with low bulk density has poor absorption performance to additives and poor aroma quality, but the effective substance in the product is uniformly released during smoking, and the attenuation of aroma and smoke is reduced. Therefore, the heating non-combustion tobacco core material is developed by mixing at least two kinds of reconstituted tobacco with different bulk densities according to the characteristics of the reconstituted tobacco with different bulk densities, and the tobacco core material with high aroma loading, stable release, good aroma quality and the like is developed. DETAILED DESCRIPTION

[0029] As used herein the terms "includes", "including", "has", "having", "comprises" and "comprising", or any other variation thereof, will cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but can include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

[0030] The transitional term "consisting of" excludes any element, step, or ingredient not specified. If used in a claim, this phrase shall not be construed to mean that the claimed composition, process, or method excludes additional materials or elements not specifically named. The phrase "consisting of" shall also cover any chemically feasible isotopic variations of elements of the compositions, materials, or components described.

[0031] The transitional phrase "consisting essentially of" means that the composition, method or process of the application can include additional ingredients, steps, or components, but only if the additional ingredients, steps, or components do not materially alter the basic and novel characteristics of the claimed composition, method, or process. If used in a claim, this phrase shall not be construed to mean that the claimed composition, process, or method excludes additional materials or elements not specifically named.

[0032] When numerical ranges are disclosed, such ranges are inclusive of the recited endpoints and are also inclusive of all intermediate ranges. For example, a range of "1 to 5" is inclusive of "1 and 5" and of "1-4", "1-3", "1-2", "2-5", "3-5", etc. When a range of values is provided, unless otherwise stated, the range is intended to include all values between the upper and lower range values, including the end points. For example, the range of "6 to 11" is intended to include "6 and 11" and all integers and fractions between 6 and 11.

[0033] In these examples, the parts and percentages are by mass unless otherwise indicated.

[0034] "Mass parts" refers to a basic unit of measurement that represents the mass ratio relationship of multiple components, 1 part can represent any unit mass, such as 1 g, 2.689 g, etc. If we say that the mass parts of component A is a parts, and the mass parts of component B is b parts, it means that the mass ratio of component A to component B is a:b. Alternatively, it means that the mass of component A is aK and the mass of component B is bK (K is an arbitrary number, indicating a multiple factor). It should not be misunderstood that unlike mass parts, the sum of the mass parts of all components is not limited to 100 parts.

[0035] "And / or" is used to indicate that one or both of the described situations can occur, for example, A and / or B includes (A and B) and (A or B).

[0036] The first aspect of the present application provides a heat-not-burn tobacco core material, the tobacco core material comprising: at least two and more reconstituted tobaccos with different bulk ranges, the reconstituted tobaccos comprising:

[0037] The bulk range is 0.8-1.5 cm 3 / g of the first reconstituted tobacco, the bulk range is 1.5-2.1 cm 3 / g of the second reconstituted tobacco, and the bulk range is 2.1-4.0 cm 3 / g of the third reconstituted tobacco.

[0038] Wherein, the bulk indicates the looseness of the reconstituted tobacco, and the calculation formula is thickness divided by quantitative, which refers to the volume of a certain weight of reconstituted tobacco. The larger the bulk, the looser the reconstituted tobacco, and the smaller the bulk, the tighter the reconstituted tobacco.

[0039] Because the bulk of the reconstituted tobacco is different, the adsorption performance of flavoring agents and smoke generating agents is different; the reconstituted tobacco with high bulk has good adsorption performance of flavoring agents and smoke generating agents, but it is easier to release flavoring agents and smoke generating agents during smoking, resulting in attenuation of the end aroma and smoke after smoking; while the reconstituted tobacco with low bulk has poor adsorption effect of flavoring agents and smoke generating agents, but the release of flavoring agents and smoke generating agents during smoking is more uniform, and the attenuation of the end aroma and smoke after smoking is reduced.

[0040] Therefore, the present solution combines the characteristics of reconstituted tobaccos with different bulk ranges, mixes at least two and more reconstituted tobaccos with different bulk ranges to obtain a tobacco core material, and can develop a tobacco core material with high flavor loading and stable release.

[0041] For example, the tobacco core material can be a tobacco core material comprising: at least two and more reconstituted tobaccos with different bulk ranges, the reconstituted tobaccos comprising: 3The first reconstituted tobacco leaf has a bulk density in the range of 1.5-2.1 cm / g 3 The second reconstituted tobacco leaf has a bulk density in the range of 0.8-1.5 cm / g 3 The first reconstituted tobacco leaf has a bulk density in the range of 1.5-2.1 cm / g 3 The third reconstituted tobacco leaf has a bulk density in the range of 1.5-2.1 cm / g 3 The second reconstituted tobacco leaf has a bulk density in the range of 0.8-1.5 cm / g 3 The third reconstituted tobacco leaf has a bulk density in the range of 1.5-2.1 cm / g

[0042] The first reconstituted tobacco leaf has a bulk density in the range of 1.5-2.1 cm / g 3 The first reconstituted tobacco leaf has a bulk density in the range of 1.5-2.1 cm / g 3 The second reconstituted tobacco leaf has a bulk density in the range of 0.8-1.5 cm / g 3 The third reconstituted tobacco leaf has a bulk density in the range of 1.5-2.1 cm / g

[0043] The first reconstituted tobacco leaf has a bulk density in the range of 1.5-2.1 cm / g 3 The first reconstituted tobacco leaf has a bulk density in the range of 1.5-2.1 cm / g 3 The third reconstituted tobacco leaf has a bulk density in the range of 1.5-2.1 cm / g 3 The second reconstituted tobacco leaf has a bulk density in the range of 0.8-1.5 cm / g

[0044] The first reconstituted tobacco leaf, the second reconstituted tobacco leaf and the third reconstituted tobacco leaf can each be prepared by any one or more of a thick slurry method, a roller pressing method, a papermaking method and a dry papermaking method.

[0045] The first reconstituted tobacco leaf has a bulk density in the range of 1.5-2.1 cm / g 3 The second reconstituted tobacco leaf has a bulk density in the range of 0.8-1.5 cm / g 3 The third reconstituted tobacco leaf has a bulk density in the range of 1.5-2.1 cm / g 3 The third reconstituted tobacco leaf has a bulk density in the range of 1.5-2.1 cm / g

[0046] The tobacco core material comprises, by weight fraction:

[0047] The first reconstituted tobacco leaf has a bulk density in the range of 1.5-2.1 cm / g The first reconstituted tobacco leaf has a bulk density in the range of 1.5-2.1 cm / g

[0048] second reconstituted tobacco leaf 10-30 parts;

[0049] third reconstituted tobacco leaf 20-50 parts.

[0050] The first reconstituted tobacco leaf has a compact structure and a higher amount of flavoring components per unit volume, and a higher proportion of the first reconstituted tobacco leaf can increase the smoke density of the whole cigarette.

[0051] Preferably, the first reconstituted tobacco leaf is prepared by a thick slurry method and / or a roller pressing method.

[0052] The second reconstituted tobacco leaf is prepared by a papermaking method.

[0053] The third reconstituted tobacco leaf is prepared by a dry papermaking method.

[0054] These reconstituted tobacco leaf preparation methods are currently widely used, have mature processes, stable formulations, and the obtained reconstituted tobacco leaf has a satisfactory bulk thickness range.

[0055] Preferably, the tobacco core material comprises, in parts by weight, at least three and more different reconstituted tobacco leaves prepared by different methods.

[0056]

[0057] Preferably, the reconstituted tobacco leaf is tobacco shreds, the width of the tobacco shreds is 0.8-1.2 mm, and the length of the tobacco shreds is 10-22 mm.

[0058] For example, the width of the tobacco shreds can be (0.8, 0.9, 1.0, 1.1, or 1.2) mm, and the length of the tobacco shreds can be (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, or 22) mm.

[0059] Preferably, the length of the tobacco shreds of the first reconstituted tobacco leaf is 12-18 mm.

[0060] The length of the tobacco shreds of the second reconstituted tobacco leaf is 14-22 mm.

[0061] The length of the tobacco shreds of the third reconstituted tobacco leaf is 15-20 mm.

[0062] Because the bulk thicknesses of different reconstituted tobacco leaves are different, their stiffnesses are also different. The smaller the bulk thickness, the higher the stiffness, and the larger the bulk thickness, the lower the stiffness. For example, the first reconstituted tobacco leaf has a small bulk thickness and a high stiffness, and is not easy to bend during the rolling process, so the length of the tobacco shreds is short.

[0063] A second aspect of this application also provides a heated non-combustible tobacco core segment, wherein the tobacco core segment is randomly filled with a heated non-combustible tobacco core material as described above, and a smoke-generating agent and flavoring additives mixed in the tobacco core material.

[0064] Preferably, the filling amount of the heated non-combustible smoke core material is 0.5-0.9 g / ml.

[0065] The third aspect of this application also provides a method for preparing a heated non-combustible tobacco core segment, wherein the above-mentioned heated non-combustible tobacco core material is randomly mixed, and a smoke-generating agent and flavoring are added to the randomly mixed tobacco core material and then stored, and the mixed tobacco shreds are quantitatively rolled into tobacco core segments using cigarette paper or forming paper.

[0066] Preferably, the conditions for the disordered mixing are: temperature 30-45°C, relative humidity 40-50%RH;

[0067] The storage conditions are: temperature 22-26℃, humidity 40-50%RH.

[0068] The fourth aspect of this application also provides a heated non-combustible cigarette, including the aforementioned heated non-combustible cigarette core segment.

[0069] The implementation schemes of this application will be described in detail below with reference to specific embodiments. However, those skilled in the art will understand that the following embodiments are only for illustrating this application and should not be regarded as limiting the scope of this application. Unless otherwise specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments used without specified manufacturers are all conventional products that can be purchased commercially.

[0070] Example 1

[0071] Take 30 portions with a bulk thickness of 2.3cm. 3 The third type of reconstituted tobacco shreds (shredded length 18 mm) prepared by the dry papermaking method, with a bulk thickness of 1.2 m at 50 parts, was obtained. 3 The first reconstituted tobacco shreds (shredded length 15 mm) prepared by the slurry method at a concentration of / g had a bulk thickness of 1.0 cm in 20 parts. 3 The first reconstituted tobacco shreds (cut to a length of 16 mm) were prepared by a roller pressing method at a controlled ambient temperature of 22℃ and relative humidity of 45%RH. The three types of reconstituted tobacco shreds were then mixed in a roller mixer at 35℃, while simultaneously adding 5% smoke-generating agent and 2% flavoring agent via continuous atomization. After 2 hours, the roller heating control unit was turned off, and the material was stored for 12 hours after cooling to ambient temperature. The stored mixed tobacco shreds were then rolled into filler segments using laboratory cigarette-making equipment, and finally combined with filter segments. The filler segments with a constant weight were selected as the evaluation samples for heated cigarettes. The smoke volume, aroma volume, attenuation, and stability were evaluated using equipment and sensory evaluation.

[0072] Example 2

[0073] Take 20 parts of the second reconstituted tobacco shred (cut shred length of 15 mm) prepared by the papermaking method with bulkiness of 1.8 cm 3 / g, 60 parts of the first reconstituted tobacco shred (cut shred length of 15 mm) prepared by the thick stock method with bulkiness of 1.2 m 3 / g, 20 parts of the first reconstituted tobacco shred (cut shred length of 15 mm) prepared by the thick stock method with bulkiness of 1.0 cm 3 / g, control the constant temperature and humidity conditions of the ambient temperature of 22℃ and relative humidity of 45% RH, mix the three kinds of reconstituted tobacco shreds into the drum mixer with the temperature of 35℃, continuously atomize and add 5% of the smoking agent and 2% of the essence at the same time, turn off the drum heating control unit after 2h, store the material after cooling to the ambient temperature for 12h. Use the laboratory cigarette equipment to roll the mixed tobacco shred after storage into the tobacco core section, finally composite with the filter section, select the constant weight of the tobacco core section as the heated cigarette evaluation sample, use the equipment and the sense of smell to evaluate the smoke amount, aroma amount, its attenuation degree and stability.

[0074] Example 3

[0075] Take 30 parts of the second reconstituted tobacco shred (cut shred length of 15 mm) prepared by the papermaking method with bulkiness of 1.8 cm 3 / g, 70 parts of the third reconstituted tobacco shred (cut shred length of 18 mm) prepared by the dry papermaking method with bulkiness of 2.3 m 3 / g, control the constant temperature and humidity conditions of the ambient temperature of 22℃ and relative humidity of 45% RH, mix the three kinds of reconstituted tobacco shreds into the drum mixer with the temperature of 35℃, continuously atomize and add 5% of the smoking agent and 2% of the essence at the same time, turn off the drum heating control unit after 2h, store the material after cooling to the ambient temperature for 12h. Use the laboratory cigarette equipment to roll the mixed tobacco shred after storage into the tobacco core section, finally composite with the filter section, select the constant weight of the tobacco core section as the heated cigarette evaluation sample, use the equipment and the sense of smell to evaluate the smoke amount, aroma amount, its attenuation degree and stability.

[0076] Example 4

[0077] Take 30 parts of the third reconstituted tobacco shred (cut shred length of 18 mm) prepared by the dry papermaking method with bulkiness of 2.3 cm 3 / g, 10 parts of the second reconstituted tobacco shred (cut shred length of 15 mm) prepared by the papermaking method with bulkiness of 1.8 m 3 / g, 40 parts of the first reconstituted tobacco shred (cut shred length of 15 mm) prepared by the thick stock method with bulkiness of 1.2 cm 3 / g, 20 parts of the first reconstituted tobacco shred (cut shred length of 15 mm) prepared by the thick stock method with bulkiness of 1.0 cm3 / g of the first reconstituted tobacco strands (cut tobacco length of 16 mm) were taken. The three kinds of reconstituted tobacco strands were mixed in a drum mixer with a temperature of 35 °C under constant temperature and humidity conditions of an environmental temperature of 22 °C and a relative humidity of 45% RH, while 5% of the smoking agent and 2% of the essence were continuously atomized and added. After 2 h, the drum heating control unit was turned off, and the material was stored for 12 h after being cooled to the ambient temperature. The mixed cut tobacco after storage was rolled into tobacco core segments using a laboratory cigarette rolling device, and finally, the filter segments were compounded. The weight of the tobacco core segments was selected as constant as the evaluation sample of the heated cigarette, and the smoke volume, aroma volume, and their attenuation degree and stability were evaluated by using the equipment and the sense of smell.

[0078] Example 5

[0079] Ten portions of the third reconstituted tobacco strands (cut tobacco length of 18 mm) with a bulk density of 1.8 cm 3 / g were taken. Ten portions of the second reconstituted tobacco strands (cut tobacco length of 15 mm) with a bulk density of 1.8 cm 3 / g were taken. Seventy portions of the first reconstituted tobacco strands (cut tobacco length of 15 mm) with a bulk density of 1.2 cm 3 / g were taken. The three kinds of reconstituted tobacco strands were mixed in a drum mixer with a temperature of 35 °C under constant temperature and humidity conditions of an environmental temperature of 22 °C and a relative humidity of 45% RH, while 5% of the smoking agent and 2% of the essence were continuously atomized and added. After 2 h, the drum heating control unit was turned off, and the material was stored for 12 h after being cooled to the ambient temperature. The mixed cut tobacco after storage was rolled into tobacco core segments using a laboratory cigarette rolling device, and finally, the filter segments were compounded. The weight of the tobacco core segments was selected as constant as the evaluation sample of the heated cigarette, and the smoke volume, aroma volume, and their attenuation degree and stability were evaluated by using the equipment and the sense of smell.

[0080] Comparative Example 1

[0081] One hundred portions of the first reconstituted tobacco strands (cut tobacco length of 15 mm) with a bulk density of 1.2 cm 3 / g were taken. The reconstituted tobacco strands were mixed in a drum mixer with a temperature of 35 °C under constant temperature and humidity conditions of an environmental temperature of 22 °C and a relative humidity of 45% RH, while 5% of the smoking agent and 2% of the essence were continuously atomized and added. After 2 h, the drum heating control unit was turned off, and the material was stored for 12 h after being cooled to the ambient temperature. The mixed cut tobacco after storage was rolled into tobacco core segments using a laboratory cigarette rolling device, and finally, the filter segments were compounded. The weight of the tobacco core segments was selected as constant as the evaluation sample of the heated cigarette, and the smoke volume, aroma volume, and their attenuation degree and stability were evaluated by using the equipment and the sense of smell.

[0082] Comparative Example 2

[0083] One hundred portions of the first reconstituted tobacco strands (cut tobacco length of 15 mm) with a bulk density of 1.2 cm 3 / g of reconstituted tobacco shreds (shredded length 15mm). Under constant temperature and humidity conditions of 22℃ and 45% RH, the reconstituted tobacco shreds were loaded into a drum mixer at 35℃ and mixed. Simultaneously, 5% smoke-generating agent and 2% flavoring were continuously added via atomization. After 2 hours, the drum heating control unit was turned off, and the material was stored for 12 hours after cooling to ambient temperature. The stored mixed tobacco shreds were then rolled into filler segments using laboratory cigarette-making equipment, and finally combined with filter segments. The filler segments with a constant weight were selected as the evaluation samples for heated cigarettes. The smoke volume, aroma volume, attenuation, and stability were evaluated using equipment and sensory evaluation.

[0084] Comparative Example 3

[0085] Take 100 portions with a bulk thickness of 2.3cm. 3 / g of reconstituted tobacco shreds (shredded to a length of 18mm) were mixed under constant temperature and humidity conditions of 22℃ and 45% RH. The reconstituted tobacco shreds were then placed in a drum mixer at 35℃ and continuously atomized with 5% smoke-generating agent and 2% flavoring. After 2 hours, the drum heating control unit was turned off, and the material was stored for 12 hours after cooling to ambient temperature. The stored mixed tobacco shreds were then rolled into filler segments using laboratory cigarette-making equipment, and finally combined with filter segments. The filler segments with a constant weight were selected as evaluation samples for heated cigarettes. The smoke volume, aroma volume, attenuation, and stability were assessed using equipment and sensory evaluation.

[0086] Performance testing

[0087] 1. Smoke volume test: The test was conducted using an electronic cigarette smoke concentration tester. The test conditions were: smoking speed 17.5m / s, inhalation volume 35ml, inhalation time interval 13s, and 13 puffs per cigarette.

[0088] 2. Aroma Test: The aroma of the cigarette is evaluated according to the sensory evaluation method for heated non-combustible cigarettes.

[0089] 3. Uniformity: The stability of cigarette smoke and the persistence of aroma are evaluated according to the sensory evaluation method for heated non-combustible cigarettes.

[0090] The test results of each embodiment and comparative example are shown in Table 1. It can be seen that the smoke concentration index of the embodiments is higher than that of the comparative examples, the aroma is fuller, the aroma quality is better, the aroma lasts longer, and the smoke stability is better.

[0091] Table 1. Test results of heated tobacco products in each embodiment and comparative example.

[0092]

[0093]

[0094] Finally, it should be noted that the above-described embodiments are merely intended for describing and illustrating, but not limiting the technical solutions of the present application; even though the present application has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or equivalently replace some or all of the technical features thereof; and such 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.

[0095] Furthermore, those skilled in the art will appreciate that a combination of features from different embodiments can be meant to be within the scope of the present application and form a different embodiment, although some embodiments herein include certain features rather than others included in other embodiments. For example, in the claims above, any of the claimed embodiments can be used in any combination. The information disclosed in this Background section is only intended to deepen the understanding of the general background of the present application, and should not be considered as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art.

Claims

1. A heat-not-combustible smoke core material, characterized in that, The core material comprises: at least two or more reconstituted tobacco leaves with different bulk thicknesses, wherein the reconstituted tobacco leaves include: The porosity ranges from 0.9 to 1.3 cm. 3 The first reconstituted tobacco leaf, with a thickness ranging from 1.7 to 2.1 cm, has a density of / g. 3 The second reconstituted tobacco leaf and its thickness range from 2.1 to 2.5 cm. 3 / g of third reconstituted tobacco leaves.

2. The heated non-combustible smoke core material according to claim 1, characterized in that, The cigarette core material comprises, by weight parts: 60-110 parts of first-stage reconstituted tobacco leaves; 10-30 parts of second reconstituted tobacco leaves; 20-50 parts of reconstituted tobacco leaves.

3. The heated non-combustible smoke core material according to claim 1, characterized in that, The first reconstituted tobacco leaf is prepared by a slurry method and / or a roll pressing method; The second reconstituted tobacco leaf is prepared by a papermaking process; The third reconstituted tobacco leaf is prepared by dry papermaking.

4. The heated non-combustible smoke core material according to claim 3, characterized in that, The cigarette core material comprises, by weight parts: 40-70 parts of reconstituted tobacco leaves using the slurry method; 20-40 parts of reconstituted tobacco leaves by roller pressing; 10-30 parts of reconstituted tobacco leaves using the papermaking method; 20-50 parts of dry-processed reconstituted tobacco leaves; Alternatively, the core material comprises, by weight, the following: 40-70 parts of reconstituted tobacco leaves using the slurry method; 20-40 parts of reconstituted tobacco leaves by roller pressing; 20-50 parts of dry-processed reconstituted tobacco leaves; Alternatively, the core material comprises, by weight, the following: 40-70 parts of reconstituted tobacco leaves using the slurry method; 20-40 parts of reconstituted tobacco leaves by roller pressing; 10-30 parts of reconstituted tobacco leaves using the papermaking method; Among them, dry reconstituted tobacco leaves are prepared by dry papermaking.

5. The heated non-combustible smoke core material according to claim 1, characterized in that, The reconstituted tobacco leaf is shredded tobacco, the width of which is 0.8~1.2mm and the length of which is 10~22mm.

6. The heated non-combustible smoke core material according to claim 5, characterized in that, The length of the tobacco shreds in the first reconstituted tobacco leaf is 12-18 mm; The length of the tobacco shreds in the second reconstituted tobacco leaf is 14-22 mm; The length of the tobacco shreds in the third reconstituted tobacco leaf is 15-20 mm.

7. A heated, non-combustible smoke core segment, characterized in that, The core segment is randomly filled with a heat-not-burning core material as described in any one of claims 1 to 6, and a smoke-generating agent and flavoring additives mixed in the core material.

8. The heated non-combustible smoke core segment according to claim 7, characterized in that, The filling amount of the heated non-combustible smoke core material is 0.5-0.9 g / ml.

9. A method for preparing a heated, non-combustible smoke core segment, characterized in that, The heat-not-burning tobacco core material according to any one of claims 1 to 6 is randomly mixed, and flavorings and smoke-generating agents are added to the randomly mixed tobacco core material and then stored. The mixed tobacco shreds are then quantitatively rolled into tobacco core segments using cigarette paper or forming paper.

10. The method for preparing the heated non-combustible smoke core segment according to claim 9, characterized in that, The conditions for the disordered mixing are: temperature 30~45 ℃, relative humidity 40~50% RH; The storage conditions are: temperature 22~26 ℃, relative humidity 40~50% RH.

11. A heated non-combustible cigarette, characterized in that, Includes a heated non-combustible smoke core segment as described in claim 7 or 8.

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