A method for manufacturing a smoking segment of a smoking-fragrance separation type of a heat-not-burn cigarette

Abstract

The application provides a preparation method of a smoking segment of a smoke-aroma separated type of a heating cigarette, the smoking segment is composed of tobacco sheet and aromatic plant micro-powder sheet, the tobacco sheet and the aromatic plant micro-powder sheet are respectively prepared by using tobacco powder and aromatic plant micro-powder as raw materials through a thick paste method, and the two kinds of sheets can be combined in a two-segment type or a mixed one-segment type. The smoking segment of the heating cigarette can release natural spices of aromatic plant seeds, the release of characteristic flavor components is stable, the use proportion of characteristic aromatic plant micro-powder in the smoking segment is strong in controllability, the sheet preparation process is stable and controllable, and the product can be endowed with unique taste and style characteristics.

Description

Technical Field

[0001] This invention belongs to the field of cigarette raw material technology, specifically relating to a method for preparing the smoke-generating section of a smoke-fragrance separated heated cigarette. Background Technology

[0002] Heated cigarettes, a novel tobacco product, utilize a special heat source to control the temperature of the core material, ensuring that the material in the smoke-generating section releases aerosols only under heating rather than combustion conditions. The core material is a key component determining smoke release and significantly impacts the product's sensory quality. Currently, heated cigarette core materials mainly come in the form of sheet tobacco, tobacco pellets, and natural tobacco, with sheet tobacco being the most widely used. Improving the smoking experience and the stability of flavor release in the aerosol has become a hot topic of research.

[0003] To improve the stability of aroma release and endow heated cigarettes with specific flavor and style characteristics, many researchers have conducted fruitful explorations from the perspective of core material raw materials. For example, patent CN113528240A utilizes microbial fermentation technology to process a mixture of tobacco leaves and tea leaves and extract and separate novel latent aroma substances, thereby improving the smoking quality of heated cigarettes. Patent CN110150727A proposes adding tangerine peel extract and solids to a tobacco base sheet to obtain a tangerine peel-scented plant-based aroma sheet. Applying natural plant flavorings with characteristic aromas to the sheet allows the release of aroma substances under heating, giving the product specific flavor characteristics. However, most current reports involve mixing natural plant powders with tobacco powders, pulping them, and then forming the base sheet. However, the physical properties of different plant powders vary greatly, leading to significant changes in pulping processes and coating parameters after their application in the pulp. Continuous parameter optimization is required when the powder ratio changes, causing inconvenience for industrial implementation.

[0004] From another perspective, processing natural aromatic plant powder into individual thin sheets and then mixing them with tobacco sheets in a certain proportion for use in the smoking section will greatly facilitate product formulation design, formula adjustment, and production process adjustment. It also avoids the problem of low release efficiency of effective components caused by insufficient and uneven heating of natural plant powder in mixed slurry, thus preserving and leveraging the slow-release and uniform release characteristics of the characteristic aromas in the natural aromatic plant powder. Based on this, this patent proposes a method for preparing the smoking section of a tobacco-aroma separated heated cigarette. The smoking section is composed of tobacco sheets and aromatic plant powder sheets. The two types of sheets can be combined in a two-section configuration or a mixed-component one-section configuration. The proportion of characteristic aromatic plant powder used in the smoking section is highly controllable, and the sheet preparation process is stable and controllable, giving the product a unique flavor and style. Summary of the Invention

[0005] The purpose of this invention is to provide a method for preparing the smoking section of a tobacco-aroma separation heated cigarette. The smoking section is composed of tobacco sheets and aromatic plant micro-powder sheets. The two types of sheets can be combined in a two-section manner or in a mixed-component one-section manner. This method can achieve stable release of characteristic aroma components of natural aromatic plants. The proportion of characteristic aromatic plant micro-powder used in the smoking section is highly controllable. The sheet preparation process is stable and controllable, which can give the product a unique flavor and style characteristics.

[0006] To achieve the above objectives, this application employs the following technical solution:

[0007] A method for preparing the smoking section of a smoke-generating cigarette with separate tobacco aroma and fragrance, wherein the smoking section is composed of a composite of tobacco sheets and aromatic plant micro-powder sheets; including the following steps:

[0008] Step 1: The preparation method of tobacco sheets includes the following steps:

[0009] (A1) Tobacco expansion and pulverization process:

[0010] The cut tobacco stems and shreds are rehydrated to a moisture content of 16-28% to obtain tobacco raw materials. The tobacco raw materials are then expanded using steam expansion or microwave expansion methods. After the expanded tobacco raw materials are dried, they are pulverized to obtain tobacco powder with a particle size of 150-250 mesh.

[0011] (A2) Preparation process of tobacco sheet coating slurry:

[0012] The tobacco powder obtained in step (A1) is mixed evenly with adhesive, smoke generator, added fiber and tobacco flavoring according to the set ratio to form a thin sheet coating slurry;

[0013] (A3) Preparation process of tobacco sheet substrate:

[0014] The tobacco sheet coating slurry obtained in step (A2) is added to the worktable of the scraper coating machine. The scraper speed and thickness are controlled to coat the slurry into a substrate and dry it to a suitable moisture content to obtain a tobacco sheet substrate.

[0015] Step 2, the preparation method of aromatic plant micro-powder flakes includes the following steps:

[0016] (B1) Aromatic plant compounding and pulverizing process:

[0017] According to the requirements of the product's flavor characteristics, natural aromatic plants are compounded in a set ratio, dried, and pulverized to obtain aromatic plant micro powder with a particle size of 150-250 mesh.

[0018] (B2) Preparation process of aromatic plant micro powder flake slurry:

[0019] The aromatic plant micro powder in step (B1) is mixed evenly with the adhesive, added fiber and solvent according to the set ratio, and stirred until homogeneous to form an aromatic plant micro powder coating slurry;

[0020] (B3) Preparation process of aromatic plant micro powder flakes:

[0021] The aromatic plant micro powder coating slurry obtained in step (B2) is added to the worktable of the scraper coating machine. The scraper speed and thickness are controlled to coat the slurry into a substrate and dry it to a suitable moisture content to obtain aromatic plant micro powder flakes.

[0022] Step 3, the preparation of the smoke-generating section includes the following steps:

[0023] (31) Two-stage smoke-generating section preparation process:

[0024] Tobacco sheets and aromatic plant powder sheets of a set length are gathered into tobacco sheet bundles and aromatic plant powder sheet bundles, respectively. The ends of the tobacco sheet bundles and aromatic plant powder sheet bundles are connected to form a composite two-section smoke-generating section.

[0025] (32) Preparation process of one-stage smoke-generating section:

[0026] A single-segment smoking section is formed by combining tobacco sheets of the same or different lengths with aromatic plant powder sheets.

[0027] Preferably, the drying temperature does not exceed 95 degrees Celsius.

[0028] Preferably, the mass ratio of tobacco powder to adhesive, smoke generator, added fiber and tobacco flavoring in step A2 is (60-80):(0.5-5):(15-30):(2-8):(0.1-1.0).

[0029] Preferably, the adhesive in step A2 is one or more of sodium carboxymethyl cellulose, guar gum, and konjac glucomannan; the smoking agent is one or a mixture of glycerol and propylene glycol; and the added fiber is wood pulp or hemp pulp fiber.

[0030] Preferably, the natural aromatic plants in step B1 are aromatic plants with characteristic fragrances, including one or more of cloves, star anise, cinnamon, cocoa, orange peel, coffee, blueberry, mint, and mugwort.

[0031] Preferably, the mass ratio of aromatic plant powder to adhesive, added fiber and solvent in step B2 is (50-70):(1-6):(2-8):(150-250).

[0032] Preferably, the adhesive in step B2 is one or more of sodium carboxymethyl cellulose, guar gum, and konjac glucomannan; the added fiber is wood pulp or hemp pulp fiber.

[0033] Preferably, in step 31, the length ratio of tobacco sheet to aromatic plant powder sheet is 2:1-4:1.

[0034] Preferably, in step 32, the weight ratio of tobacco sheets to aromatic plant powder sheets is 2:1 to 4:1.

[0035] A smoke-and-aroma separation type heated cigarette, wherein the smoke-generating section is prepared using any of the above-mentioned preparation methods.

[0036] Compared with the prior art, the beneficial effects of the present invention are:

[0037] (1) It can make good use of the unique "carrier + fragrance" characteristics of natural fragrances in aromatic plant powder. The aromatic plant powder has high heating efficiency and the characteristic aromatic substances are released evenly and stably.

[0038] (2) The preparation process of natural plant micro powder flakes is stable, avoiding the problem of adjusting process parameters when the type or proportion of plant micro powder changes.

[0039] (3) The smoke-generating section of this method will greatly facilitate product formulation design and formulation maintenance and adjustment, avoiding the problem of repeatedly adjusting the process parameters of thin film preparation. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of a two-section smoke-generating section.

[0041] Figure 2 This is a schematic diagram of a single-stage smoke-generating section.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1. Tobacco sheet; 2. Aromatic plant powder sheet; 3. Smoke-generating segment. Detailed Implementation

[0044] The technical solutions of the present invention will be described in detail below through embodiments. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solutions of the present invention, and should not be construed as limiting the technical solutions of the present invention.

[0045] Unless otherwise specified, the experimental methods used in the embodiments of the present invention are conventional methods.

[0046] Unless otherwise specified, the materials and reagents used in the embodiments of this invention are all commercially available.

[0047] The two-stage smoke-generating sections in Examples 1 to 3 are as follows: Figure 1 As shown, the one-piece smoke-generating section in Examples 4 to 6 is as follows: Figure 2 As shown.

[0048] Example 1

[0049] A method for preparing the smoking section of a smoke-generating cigarette with separate tobacco aroma and fragrance, wherein the smoking section is composed of a composite of tobacco sheets and aromatic plant micro-powder sheets; including the following steps:

[0050] Step 1: The preparation method of tobacco sheets includes the following steps:

[0051] (A1) Tobacco expansion and pulverization process:

[0052] The cut tobacco stems and shreds are rehydrated to 16% moisture content to obtain tobacco raw materials. The tobacco raw materials are then expanded using a steam expansion method. After drying, the expanded tobacco raw materials are pulverized to obtain tobacco powder with a particle size of 220 mesh.

[0053] (A2) Preparation process of tobacco sheet coating slurry:

[0054] The tobacco powder obtained in step (A1) is mixed evenly with sodium carboxymethyl cellulose, glycerol, wood pulp, and tobacco flavoring (the tobacco flavoring here is the conventional tobacco flavoring of the current technology, which is determined according to the design requirements) in a set ratio to form a thin film coating slurry; the mass ratio of tobacco powder to sodium carboxymethyl cellulose, glycerol, wood pulp, and tobacco flavoring is 60:0.5:15:2:0.1.

[0055] (A3) Preparation process of tobacco sheet substrate:

[0056] The tobacco sheet coating slurry obtained in step (A2) is added to the worktable of the scraper coating machine. The scraper speed and thickness are controlled to coat the slurry into a substrate and dry it to a suitable moisture content to obtain a tobacco sheet substrate. The drying temperature is 80°C.

[0057] Step 2, the preparation method of aromatic plant micro-powder flakes includes the following steps:

[0058] (B1) Aromatic plant compounding and pulverizing process:

[0059] According to the requirements of the product's flavor characteristics, natural aromatic plants are compounded in a set ratio and then dried. In this embodiment, mint and blueberry are compounded in a mass ratio of 2:1 and then pulverized to obtain aromatic plant micro powder with a particle size of 250 mesh.

[0060] (B2) Preparation process of aromatic plant micro powder flake slurry:

[0061] The aromatic plant powder in step (B1) is mixed evenly with sodium carboxymethyl cellulose, wood pulp and water according to the set ratio, and stirred until homogeneous to form an aromatic plant powder coating slurry; the mass ratio of aromatic plant powder, sodium carboxymethyl cellulose, wood pulp and water is 50:1:2:150.

[0062] (B3) Preparation process of aromatic plant micro powder flakes:

[0063] The aromatic plant micro powder coating slurry obtained in step (B2) is added to the worktable of the scraper coating machine. The scraper speed and thickness are controlled to coat the slurry into a substrate and dry it at 80°C to a suitable moisture content to obtain aromatic plant micro powder flakes.

[0064] Step 3, the preparation of the smoke-generating section includes the following steps:

[0065] Two-stage smoke-generating section preparation process:

[0066] Tobacco sheets with a length of 16mm and aromatic plant powder sheets with a length of 8mm are gathered into tobacco sheet bundles and aromatic plant powder sheet bundles, respectively. The ends of the tobacco sheet bundles and aromatic plant powder sheet bundles are connected to form a composite two-section smoking section.

[0067] Example 2

[0068] A method for preparing the smoking section of a smoke-generating cigarette with separate tobacco aroma and fragrance, wherein the smoking section is composed of a composite of tobacco sheets and aromatic plant micro-powder sheets; including the following steps:

[0069] Step 1: The preparation method of tobacco sheets includes the following steps:

[0070] (A1) Tobacco expansion and pulverization process:

[0071] The cut tobacco stems and shreds are rehydrated to 25% moisture content to obtain tobacco raw materials. The tobacco raw materials are then expanded using a steam expansion method. After drying, the expanded tobacco raw materials are pulverized to obtain tobacco powder with a particle size of 220 mesh.

[0072] (A2) Preparation process of tobacco sheet coating slurry:

[0073] The tobacco powder obtained in step (A1) is mixed evenly with guar gum, glycerol, wood pulp and tobacco flavoring (the tobacco flavoring here is the conventional tobacco flavoring of the current technology, and the specific one is determined according to the design requirements) in a set ratio to form a thin film coating slurry; the mass ratio of tobacco powder, guar gum, glycerol, wood pulp and tobacco flavoring is 80:5:30:8:1.0.

[0074] (A3) Preparation process of tobacco sheet substrate:

[0075] The tobacco sheet coating slurry obtained in step (A2) is added to the worktable of the scraper coating machine. The scraper speed and thickness are controlled to coat the slurry into a substrate and dry it to a suitable moisture content to obtain a tobacco sheet substrate. The drying temperature is 80°C.

[0076] Step 2, the preparation method of aromatic plant micro-powder flakes includes the following steps:

[0077] (B1) Aromatic plant compounding and pulverizing process:

[0078] According to the requirements of the product's flavor characteristics, natural aromatic plants in a set ratio are compounded and dried. In this embodiment, cloves and cinnamon are compounded in a mass ratio of 1:1 and pulverized to obtain aromatic plant micro powder with a particle size of 250 mesh.

[0079] (B2) Preparation process of aromatic plant micro powder flake slurry:

[0080] The aromatic plant powder from step (B1) is mixed evenly with guar gum, wood pulp and water according to the set ratio, and stirred until homogeneous to form an aromatic plant powder coating slurry; the mass ratio of aromatic plant powder, guar gum, wood pulp and water is 70:6:8:250.

[0081] (B3) Preparation process of aromatic plant micro powder flakes:

[0082] The aromatic plant micro powder coating slurry obtained in step (B2) is added to the worktable of the scraper coating machine. The scraper speed and thickness are controlled to coat the slurry into a substrate and dry it at 80°C to a suitable moisture content to obtain aromatic plant micro powder flakes.

[0083] Step 3, the preparation of the smoke-generating section includes the following steps:

[0084] Two-stage smoke-generating section preparation process:

[0085] Tobacco sheets with a length of 18mm and aromatic plant powder sheets with a length of 6mm are gathered into tobacco sheet bundles and aromatic plant powder sheet bundles, respectively. The ends of the tobacco sheet bundles and aromatic plant powder sheet bundles are connected to form a composite two-section smoking section.

[0086] Example 3

[0087] A method for preparing the smoking section of a smoke-generating cigarette with separate tobacco aroma and fragrance, wherein the smoking section is composed of a composite of tobacco sheets and aromatic plant micro-powder sheets; including the following steps:

[0088] Step 1: The preparation method of tobacco sheets includes the following steps:

[0089] (A1) Tobacco expansion and pulverization process:

[0090] The cut tobacco stems and shreds are rehydrated to 22% moisture content to obtain tobacco raw materials. The tobacco raw materials are then expanded using a steam expansion method. After drying, the expanded tobacco raw materials are pulverized to obtain tobacco powder with a particle size of 220 mesh.

[0091] (A2) Preparation process of tobacco sheet coating slurry:

[0092] The tobacco powder obtained in step (A1) is mixed evenly with konjac glucomannan, propylene glycol, wood pulp and tobacco flavoring (the tobacco flavoring here is the conventional tobacco flavoring of the current technology, and the specific one is determined according to the design requirements) in a set ratio to form a thin film coating slurry; the mass ratio of tobacco powder, konjac glucomannan, propylene glycol, wood pulp and tobacco flavoring is 70:3:20:6:0.5.

[0093] (A3) Preparation process of tobacco sheet substrate:

[0094] The tobacco sheet coating slurry obtained in step (A2) is added to the worktable of the scraper coating machine. The scraper speed and thickness are controlled to coat the slurry into a substrate and dry it to a suitable moisture content to obtain a tobacco sheet substrate. The drying temperature is 80°C.

[0095] Step 2, the preparation method of aromatic plant micro-powder flakes includes the following steps:

[0096] (B1) Aromatic plant compounding and pulverizing process:

[0097] According to the requirements of the product's flavor characteristics, natural aromatic plants are compounded in a set ratio and then dried. In this embodiment, cocoa and mint are compounded in a mass ratio of 1:2 and then pulverized to obtain aromatic plant micro powder with a particle size of 250 mesh.

[0098] (B2) Preparation process of aromatic plant micro powder flake slurry:

[0099] The aromatic plant micro powder from step (B1) is mixed evenly with konjac glucomannan, wood pulp and water according to the set ratio, and stirred until homogeneous to form an aromatic plant micro powder coating slurry; the mass ratio of aromatic plant micro powder, konjac glucomannan, wood pulp and water is 60:3:5:200.

[0100] (B3) Preparation process of aromatic plant micro powder flakes:

[0101] The aromatic plant micro powder coating slurry obtained in step (B2) is added to the worktable of the scraper coating machine. The scraper speed and thickness are controlled to coat the slurry into a substrate and dry it at 80°C to a suitable moisture content to obtain aromatic plant micro powder flakes.

[0102] Step 3, the preparation of the smoke-generating section includes the following steps:

[0103] Two-stage smoke-generating section preparation process:

[0104] Tobacco sheets with a length of 20 mm and aromatic plant powder sheets with a length of 5 mm are gathered into tobacco sheet bundles and aromatic plant powder sheet bundles, respectively. The ends of the tobacco sheet bundles and aromatic plant powder sheet bundles are connected to form a composite two-section smoking section.

[0105] Example 4

[0106] A method for preparing the smoking section of a smoke-generating cigarette with separate tobacco aroma and fragrance, wherein the smoking section is composed of a composite of tobacco sheets and aromatic plant micro-powder sheets; including the following steps:

[0107] Step 1: The preparation method of tobacco sheets includes the following steps:

[0108] (A1) Tobacco expansion and pulverization process:

[0109] The cut tobacco stems and shreds are rehydrated to 20% moisture content to obtain tobacco raw materials. The tobacco raw materials are then expanded using a steam expansion method. After drying, the expanded tobacco raw materials are pulverized to obtain tobacco powder with a particle size of 220 mesh.

[0110] (A2) Preparation process of tobacco sheet coating slurry:

[0111] The tobacco powder obtained in step (A1) is mixed evenly with sodium carboxymethyl cellulose, glycerol, wood pulp, and tobacco flavoring (the tobacco flavoring here is the conventional tobacco flavoring of the current technology, which is determined according to the design requirements) in a set ratio to form a thin film coating slurry; the mass ratio of tobacco powder to sodium carboxymethyl cellulose, glycerol, wood pulp, and tobacco flavoring is 65:2:23:4:0.3.

[0112] (A3) Preparation process of tobacco sheet substrate:

[0113] The tobacco sheet coating slurry obtained in step (A2) is added to the worktable of the scraper coating machine. The scraper speed and thickness are controlled to coat the slurry into a substrate and dry it to a suitable moisture content to obtain a tobacco sheet substrate. The drying temperature is 80°C.

[0114] Step 2, the preparation method of aromatic plant micro-powder flakes includes the following steps:

[0115] (B1) Aromatic plant compounding and pulverizing process:

[0116] According to the requirements of the product's flavor characteristics, natural aromatic plants are compounded in a set ratio and then dried. In this embodiment, coffee and cloves are selected in a mass ratio of 1:1 and pulverized to obtain aromatic plant micro powder with a particle size of 250 mesh.

[0117] (B2) Preparation process of aromatic plant micro powder flake slurry:

[0118] The aromatic plant powder in step (B1) is mixed evenly with sodium carboxymethyl cellulose, wood pulp and water according to the set ratio, and stirred until homogeneous to form an aromatic plant powder coating slurry; the mass ratio of aromatic plant powder, sodium carboxymethyl cellulose, wood pulp and water is 62:4:3:220.

[0119] (B3) Preparation process of aromatic plant micro powder flakes:

[0120] The aromatic plant micro powder coating slurry obtained in step (B2) is added to the worktable of the scraper coating machine. The scraper speed and thickness are controlled to coat the slurry into a substrate and dry it at 80°C to a suitable moisture content to obtain aromatic plant micro powder flakes.

[0121] Step 3, the preparation of the smoke-generating section includes the following steps:

[0122] Preparation process of one-stage smoke-generating section:

[0123] A single-segment smoking section is formed by combining tobacco sheets of the same length with aromatic plant powder sheets. The weight ratio of tobacco sheets to aromatic plant powder sheets is 2:1.

[0124] Example 5

[0125] A method for preparing the smoking section of a smoke-generating cigarette with separate tobacco aroma and fragrance, wherein the smoking section is composed of a composite of tobacco sheets and aromatic plant micro-powder sheets; including the following steps:

[0126] Step 1: The preparation method of tobacco sheets includes the following steps:

[0127] (A1) Tobacco expansion and pulverization process:

[0128] The cut tobacco stems and shreds are rehydrated to 25% moisture content to obtain tobacco raw materials. The tobacco raw materials are then expanded using a steam expansion method. After drying, the expanded tobacco raw materials are pulverized to obtain tobacco powder with a particle size of 220 mesh.

[0129] (A2) Preparation process of tobacco sheet coating slurry:

[0130] The tobacco powder obtained in step (A1) is mixed evenly with guar gum, glycerol, wood pulp and tobacco flavoring (the tobacco flavoring here is the conventional tobacco flavoring of the current technology, and the specific one is determined according to the design requirements) in a set ratio to form a thin film coating slurry; the mass ratio of tobacco powder, guar gum, glycerol, wood pulp and tobacco flavoring is 80:5:30:8:1.0.

[0131] (A3) Preparation process of tobacco sheet substrate:

[0132] The tobacco sheet coating slurry obtained in step (A2) is added to the worktable of the scraper coating machine. The scraper speed and thickness are controlled to coat the slurry into a substrate and dry it to a suitable moisture content to obtain a tobacco sheet substrate. The drying temperature is 80°C.

[0133] Step 2, the preparation method of aromatic plant micro-powder flakes includes the following steps:

[0134] (B1) Aromatic plant compounding and pulverizing process:

[0135] According to the requirements of the product's flavor characteristics, natural aromatic plants are compounded in a set ratio and then dried. In this embodiment, orange peel and blueberries are compounded in a mass ratio of 3:1 and then crushed to obtain aromatic plant micro powder with a particle size of 250 mesh.

[0136] (B2) Preparation process of aromatic plant micro powder flake slurry:

[0137] The aromatic plant powder from step (B1) is mixed evenly with guar gum, wood pulp and water according to the set ratio, and stirred until homogeneous to form an aromatic plant powder coating slurry; the mass ratio of aromatic plant powder, guar gum, wood pulp and water is 66:2:3:250.

[0138] (B3) Preparation process of aromatic plant micro powder flakes:

[0139] The aromatic plant micro powder coating slurry obtained in step (B2) is added to the worktable of the scraper coating machine. The scraper speed and thickness are controlled to coat the slurry into a substrate and dry it at 80°C to a suitable moisture content to obtain aromatic plant micro powder flakes.

[0140] Step 3, the preparation of the smoke-generating section includes the following steps:

[0141] Preparation process of one-stage smoke-generating section:

[0142] A single-segment smoking section is formed by combining tobacco sheets of the same length with aromatic plant powder sheets. The weight ratio of tobacco sheets to aromatic plant powder sheets is 4:1.

[0143] Example 6

[0144] A method for preparing the smoking section of a smoke-generating cigarette with separate tobacco aroma and fragrance, wherein the smoking section is composed of a composite of tobacco sheets and aromatic plant micro-powder sheets; including the following steps:

[0145] Step 1: The preparation method of tobacco sheets includes the following steps:

[0146] (A1) Tobacco expansion and pulverization process:

[0147] The cut tobacco stems and shreds are rehydrated to 22% moisture content to obtain tobacco raw materials. The tobacco raw materials are then expanded using a steam expansion method. After drying, the expanded tobacco raw materials are pulverized to obtain tobacco powder with a particle size of 220 mesh.

[0148] (A2) Preparation process of tobacco sheet coating slurry:

[0149] The tobacco powder obtained in step (A1) is mixed evenly with konjac glucomannan, propylene glycol, wood pulp and tobacco flavoring (the tobacco flavoring here is the conventional tobacco flavoring of the current technology, and the specific one is determined according to the design requirements) in a set ratio to form a thin film coating slurry; the mass ratio of tobacco powder, konjac glucomannan, propylene glycol, wood pulp and tobacco flavoring is 70:3:20:6:0.5.

[0150] (A3) Preparation process of tobacco sheet substrate:

[0151] The tobacco sheet coating slurry obtained in step (A2) is added to the worktable of the scraper coating machine. The scraper speed and thickness are controlled to coat the slurry into a substrate and dry it to a suitable moisture content to obtain a tobacco sheet substrate. The drying temperature is 80°C.

[0152] Step 2, the preparation method of aromatic plant micro-powder flakes includes the following steps:

[0153] (B1) Aromatic plant compounding and pulverizing process:

[0154] According to the requirements of the product's flavor characteristics, natural aromatic plants are compounded in a set ratio and then dried. In this embodiment, cocoa and mint are compounded in a mass ratio of 1:2 and then pulverized to obtain aromatic plant micro powder with a particle size of 250 mesh.

[0155] (B2) Preparation process of aromatic plant micro powder flake slurry:

[0156] The aromatic plant micro powder from step (B1) is mixed evenly with konjac glucomannan, wood pulp and water according to the set ratio, and stirred until homogeneous to form an aromatic plant micro powder coating slurry; the mass ratio of aromatic plant micro powder, konjac glucomannan, wood pulp and water is 60:3:5:200.

[0157] (B3) Preparation process of aromatic plant micro powder flakes:

[0158] The aromatic plant micro powder coating slurry obtained in step (B2) is added to the worktable of the scraper coating machine. The scraper speed and thickness are controlled to coat the slurry into a substrate and dry it at 80°C to a suitable moisture content to obtain aromatic plant micro powder flakes.

[0159] Step 3, the preparation of the smoke-generating section includes the following steps:

[0160] Preparation process of one-stage smoke-generating section:

[0161] A single-segment smoking section is formed by combining tobacco sheets of the same length with aromatic plant powder sheets. The weight ratio of tobacco sheets to aromatic plant powder sheets is 3:1.

[0162] The smoke-generating sections of Examples 1 to 6 described above are used in the smoke-generating sections of cigarette products.

[0163] The above description is merely a partial embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations are possible for those skilled in the art. Any modifications and substitutions made within the principles and implementation methods of this application should be included within the scope of protection of this application.

Claims

1. A method for producing a smoking segment of a smoking- and aroma-separation type of a heat-not-burn cigarette, characterized by, The inside of the smoke generating segment is composed of tobacco sheet A and aromatic plant micro powder sheet B; comprising the following steps: Step 1, the preparation method of tobacco sheet A comprises the following steps: (A1) tobacco expansion and crushing process: The cut tobacco stems and tobacco shreds are rehydrated to a moisture content of 16-28% to obtain tobacco raw materials, the tobacco raw materials are expanded by steam expansion or microwave expansion, and the expanded tobacco raw materials are dried and crushed to obtain tobacco powder with a particle size of 150-250 mesh; (A2) tobacco sheet coating slurry preparation process: The tobacco powder obtained in step (A1) is mixed with adhesive, smoke generating agent, additional fiber and tobacco flavor according to the set ratio to form a sheet coating slurry; (A3) preparation process of tobacco sheet substrate: The tobacco sheet coating slurry obtained in step (A2) is added to the workbench of the blade coater, the blade speed and thickness are controlled, the slurry is coated into a substrate, and dried to the appropriate moisture content to obtain a tobacco sheet substrate; Step 2, the preparation method of aromatic plant micro powder sheet B comprises the following steps: (B1) aromatic plant compounding and crushing process: According to the requirements of product taste characteristics, the set proportion of natural aromatic plants is compounded, dried and crushed to obtain aromatic plant micro powder with a particle size of 150-250 mesh; (B2) aromatic plant micro powder sheet slurry preparation process: The aromatic plant micro powder in step (B1) is mixed with adhesive, additional fiber and solvent according to the set ratio to form an aromatic plant micro powder coating slurry; (B3) aromatic plant micro powder sheet preparation process: The aromatic plant micro powder coating slurry obtained in step (B2) is added to the workbench of the blade coater, the blade speed and thickness are controlled, the slurry is coated into a substrate, and dried to the appropriate moisture content to obtain an aromatic plant micro powder sheet; Step 3, the preparation of the smoke generating segment comprises the following steps: (31) two-section smoke generating segment preparation process: The set length of tobacco sheet A and aromatic plant micro powder sheet B are gathered into tobacco sheet bundles and aromatic plant micro powder sheet bundles, respectively, and the ends of the tobacco sheet bundles and the aromatic plant micro powder sheet bundles are connected to form a two-section smoke generating segment; The natural aromatic plants in step B1 are aromatic plants with characteristic flavors, including two or more of clove, star anise, cinnamon, cocoa, orange peel, coffee, blueberry, mint and eucalyptus.

2. The method of claim 1, wherein the method further comprises the step of: The drying temperature is not more than 95 degrees Celsius.

3. The method of claim 1, wherein the method further comprises the steps of: providing a plurality of the tobacco flavor separation type of heat generating cigarettes; and providing a plurality of the tobacco flavor separation type of heat generating cigarette segments. The mass ratio of tobacco powder to adhesive, smoke generating agent, additional fiber and tobacco flavor in step A2 is (60-80):(0.5-5):(15-30):(2-8):(0.1-1.0).

4. The method of claim 1, wherein the method further comprises the steps of: providing a plurality of the tobacco flavor separation type of heat generating cigarettes; and providing a plurality of the tobacco flavor separation type of heat generating cigarette segments. The adhesive in step A2 is one or more of carboxymethyl cellulose sodium, guar gum and konjac glucomannan; the smoke generating agent is one or a mixture of both of propylene glycol and propanediol; the additional fiber is wood pulp or hemp pulp fiber.

5. The method of claim 1, wherein the method further comprises the steps of: providing a plurality of the tobacco flavor separation type of heat generating cigarettes; and providing a plurality of the tobacco flavor separation type of heat generating cigarette segments. The mass ratio of aromatic plant micro powder to adhesive, additional fiber and solvent in step B2 is (50-70):(1-6):(2-8):(150-250).

6. The method of claim 1, wherein the method further comprises the steps of: providing a plurality of the tobacco flavor separation type of heat generating cigarettes; and providing a plurality of the tobacco flavor separation type of heat generating cigarette segments. The adhesive in step B2 is one or more of carboxymethyl cellulose sodium, guar gum and konjac glucomannan; the additional fiber is wood pulp or hemp pulp fiber.

7. The method of claim 1, wherein the method further comprises the steps of: providing a plurality of the tobacco flavor separation type of heat generating cigarettes; and providing a plurality of the tobacco flavor separation type of heat generating cigarette segments. In step 31, the length ratio of the tobacco sheet A to the aromatic plant micro powder sheet B is 2:1-4:

1.

8. A smoke-and-aroma separation type heated cigarette, characterized in that, The smoking segment obtained by using the preparation method of any one of claims 1 to 7.

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