A high inorganic filler content reconstituted tobacco sheet base, reconstituted tobacco and method of making the same
Patent Information
- Application Number
- CN202411728545.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2044-11-28
AI Technical Summary
[0029]本发明的高无机填料含量再造烟叶片基的制备方法具有以下特点：
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Abstract
Description
Technical Field
[0001] This invention relates to the field of reconstituted tobacco preparation, and more specifically, to a reconstituted tobacco leaf base with high inorganic filler content, reconstituted tobacco, and a method for preparing the same. Background Technology
[0002] The conventional papermaking process for reconstituted tobacco mainly includes extraction, solid-liquid separation, pulping, papermaking, concentration, coating, and baking. In the papermaking process, inorganic fillers can be added to improve the yield of the tobacco sheet.
[0003] Due to significant differences in material properties (e.g., particle size, electrochemical properties) between inorganic fillers and tobacco pulp, the proportion of inorganic fillers that ultimately remain on the tobacco leaf base is relatively low. The actual content of inorganic fillers in conventional reconstituted tobacco products is 5-10%, only about one-third of the total amount of inorganic fillers added.
[0004] Therefore, how to increase the content of inorganic fillers in reconstituted tobacco leaves has become a technical problem that urgently needs to be solved in this field. Summary of the Invention
[0005] One object of the present invention is to provide a new technical solution for a method of preparing reconstituted tobacco leaves that can effectively increase the content of inorganic fillers in reconstituted tobacco leaves.
[0006] According to a first aspect of the present invention, a method for preparing reconstituted tobacco leaf substrate with high inorganic filler content is provided.
[0007] The preparation method of this reconstituted tobacco leaf base with high inorganic filler content includes the following steps:
[0008] Step (1): Powder the tobacco raw material to obtain powdered tobacco raw material, wherein the deviation between the median particle size of the powdered tobacco raw material and the median particle size of the powdered inorganic filler is less than or equal to 20%;
[0009] Step (2): Mix the powdered tobacco raw material and the fiber raw material and then perform extraction to obtain the extract and solid residue;
[0010] Step (3): Pulping the solid residue to obtain tobacco pulp;
[0011] Step (4): Add nanocellulose to guar gum aqueous solution to obtain mixed gum solution;
[0012] Step (5): Add the mixed adhesive and powdered inorganic filler to the tobacco pulp to obtain the mixed pulp;
[0013] Step (6): The mixed slurry is formed and dried to obtain the reconstituted tobacco leaf base.
[0014] Optionally, the particle size of the powdered tobacco raw material and the powdered inorganic filler in step (1) is 100-160 mesh.
[0015] Optionally, the deviation between the median particle size of the powdered tobacco raw material and the median particle size of the powdered inorganic filler in step (1) is less than 15% and greater than 10%.
[0016] Optionally, the fiber raw material in step (2) is coniferous and / or hardwood pulp fiber board, and the mass ratio of powdered tobacco raw material to fiber raw material is 100:(10-15);
[0017] The extraction process in step (2) is a water extraction process, and the parameters of the water extraction process are as follows: the mass ratio of extract to water is 1:(7-10), the water temperature is 65℃-75℃, and the extraction time is 55min-65min.
[0018] Optionally, the beating degree of the pulping process in step (3) is 55ºSR-75ºSR.
[0019] Optionally, the guar gum aqueous solution in step (4) is prepared by the following method: cationic guar gum is added to water and stirred for 5-10 minutes at a stirring speed of 800-1600 r / min to obtain a guar gum aqueous solution with a mass concentration of 0.1-0.5%;
[0020] Step (4) is as follows:
[0021] Nanocellulose is added to a guar gum aqueous solution at a stirring speed of 3200-3600 r / min and stirred for 10-15 min to obtain a mixed solution, wherein the mass concentration of nanocellulose in the mixed solution is 0.1-1.0%.
[0022] Optionally, the drying temperature in step (6) is 90℃-120℃, the moisture content of the reconstituted tobacco leaf base is 15-25%, and the quantitative content is 50-62g / m³. 2 .
[0023] Optionally, the powdered inorganic filler is at least one of calcium carbonate and white carbon black, and the dry weight ratio of the mixed adhesive, powdered inorganic filler and tobacco pulp is (0.5-1.5):(20-30):(70-80).
[0024] According to a second aspect of the present invention, a method for preparing reconstituted tobacco with high inorganic filler content is provided.
[0025] The preparation method of this reconstituted tobacco leaf with high inorganic filler content includes the following steps:
[0026] The extract is coated onto the reconstituted tobacco leaf substrate prepared by the method of preparing reconstituted tobacco leaf substrate with high inorganic filler content as described in this invention, and then dried to obtain reconstituted tobacco leaf.
[0027] According to a third aspect of the present invention, a reconstituted tobacco leaf with a high inorganic filler content is provided.
[0028] The reconstituted tobacco leaf with high inorganic filler content is prepared by the preparation method of the reconstituted tobacco leaf with high inorganic filler content described in this invention, wherein the mass percentage of powdered inorganic filler in the reconstituted tobacco leaf base is 15-25%.
[0029] The method for preparing reconstituted tobacco leaf substrate with high inorganic filler content of the present invention has the following characteristics:
[0030] 1. By controlling the physical dimensions of powdered tobacco materials and powdered inorganic fillers, the retention rate of inorganic fillers can be improved while retaining the tobacco raw materials.
[0031] 2. The retention rate of inorganic fillers was further improved by using guar gum, a retention aid.
[0032] 3. By adjusting the overall electrochemical properties of the mixed slurry through the hydroxyl groups carried by nanocellulose, the adverse effects on the sheet base caused by the increase of inorganic filler content are avoided, the physical properties of the reconstituted tobacco sheet base are adjusted, and the applicability of the reconstituted tobacco sheet base is guaranteed.
[0033] 4. By increasing the content of inorganic fillers in the reconstituted tobacco leaf base, the release of tar and CO from the reconstituted tobacco leaf can be reduced, thereby minimizing the adverse effects of the leaf base on the smoking quality of the reconstituted tobacco leaf. Detailed Implementation
[0034] Various exemplary embodiments of the present invention will now be described in detail. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the invention.
[0035] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.
[0036] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.
[0037] In all the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.
[0038] The method for preparing reconstituted tobacco leaf base with high inorganic filler content provided by the present invention includes the following steps:
[0039] Step (1): Powder the tobacco raw material to obtain powdered tobacco raw material, wherein the deviation between the median particle size of the powdered tobacco raw material and the median particle size of the powdered inorganic filler is less than or equal to 20%. The above-mentioned deviation between the median particle size of the powdered tobacco raw material and the median particle size of the powdered inorganic filler being less than or equal to 20% means: when the median particle size of the powdered tobacco raw material is larger than the median particle size of the powdered inorganic filler, the deviation calculated using the difference between the median particle size of the powdered tobacco raw material and the median particle size of the powdered inorganic filler as the numerator and the median particle size of the powdered inorganic filler as the denominator is less than or equal to 20%; or, when the median particle size of the powdered inorganic filler is larger than the median particle size of the powdered tobacco raw material, the deviation calculated using the difference between the median particle size of the powdered inorganic filler and the median particle size of the powdered tobacco raw material as the numerator and the median particle size of the powdered tobacco raw material as the denominator is less than or equal to 20%.
[0040] By controlling the particle size of the powdered tobacco raw material and the powdered inorganic filler, the problem of poor retention of the retention aid and nanocellulose on the powdered inorganic filler caused by excessive difference in particle size between the two is avoided. The similarity in physical size between the powdered tobacco raw material and the powdered inorganic filler also helps to ensure the stability of the powder during processing, resulting in a beneficial effect on the retention rate.
[0041] In order to improve the retention rate of powdered inorganic filler, the particle size of the powdered tobacco raw material and powdered inorganic filler in step (1) can be 100-160 mesh.
[0042] Furthermore, the particle size of the powdered tobacco raw materials and powdered inorganic fillers can be 150-160 mesh.
[0043] Furthermore, in order to improve the retention rate of powdered inorganic fillers, the deviation between the median particle size of the powdered tobacco raw material and the median particle size of the powdered inorganic fillers in step (1) is less than 15% and greater than 10%.
[0044] In practice, the median particle size of the powdered inorganic filler can be controlled to be smaller than the median particle size of the powdered tobacco raw material to ensure the retention effect of the powdered inorganic filler.
[0045] Step (2): Mix the powdered tobacco raw material and the fiber raw material and then extract them to obtain the extract and solid residue.
[0046] The fiber raw material in step (2) can be coniferous and / or hardwood pulp fiber board, and the mass ratio of powdered tobacco raw material to fiber raw material can be 100:(10-15).
[0047] The extraction process in step (2) is water extraction, and the parameters of water extraction are as follows: the mass ratio of extract to water is 1:(7-10), the water temperature is 65℃-75℃, and the extraction time is 55min-65min.
[0048] Step (3): Pulping the solid residue to obtain tobacco pulp.
[0049] The beating degree of the pulping process in step (3) can be 55ºSR-75ºSR.
[0050] Step (4): Add nanocellulose to guar gum aqueous solution to obtain mixed gum solution.
[0051] The guar gum aqueous solution in step (4) can be prepared by the following method: cationic guar gum is added to water and stirred for 5-10 minutes at a stirring speed of 800-1600 r / min to obtain a guar gum aqueous solution with a mass concentration of 0.1-0.5%.
[0052] Step (4) can be specifically described as follows:
[0053] Nanocellulose is added to a guar gum aqueous solution at a stirring speed of 3200-3600 r / min and stirred for 10-15 min to obtain a mixed solution, wherein the mass concentration of nanocellulose in the mixed solution is 0.1-1.0%.
[0054] Step (5): Add the mixed adhesive liquid and powdered inorganic filler to the tobacco pulp to obtain the mixed pulp.
[0055] Step (6): The mixed slurry is formed and dried to obtain the reconstituted tobacco leaf base.
[0056] The drying temperature in step (6) can be 90℃-120℃, and the moisture content of the reconstituted tobacco leaf base is 15-25%, with a quantitative content of 50-62 g / m³. 2 .
[0057] To ensure the retention rate of inorganic fillers, the powdered inorganic filler is at least one of calcium carbonate and white carbon black, and the dry weight ratio of the mixed adhesive, powdered inorganic filler and tobacco pulp is (0.5-1.5):(20-30):(70-80).
[0058] In addition, calcium carbonate and white carbon black are more effective in reducing the tar and CO emissions of reconstituted tobacco, thereby improving the smoking experience of reconstituted tobacco.
[0059] The method for preparing reconstituted tobacco with high inorganic filler content according to the present invention includes the following steps:
[0060] The extract is coated onto the reconstituted tobacco leaf substrate prepared by the method of preparing reconstituted tobacco leaf substrate with high inorganic filler content of the present invention, and then dried to obtain reconstituted tobacco leaf.
[0061] The reconstituted tobacco leaf with high inorganic filler content provided by this invention is prepared by the preparation method of the reconstituted tobacco leaf with high inorganic filler content of this invention, wherein the mass percentage of powdered inorganic filler in the reconstituted tobacco leaf base is 15-25%. The content of powdered inorganic filler in the reconstituted tobacco leaf base is significantly higher than that of existing reconstituted tobacco leaf products.
[0062] Unless otherwise specified, the experimental methods used in the following examples are conventional methods, and the materials and reagents used are commercially available. Unless otherwise specified, the equipment used in the experiments is well known to those skilled in the art.
[0063] Example 1
[0064] Soak 100g of softwood pulp fiber board in water for 4-8 hours, then decompose it with a 15% decomposition concentration. Mix the decomposed pulp fiber board with powdered tobacco raw material (median particle size of 150 mesh) at a mass ratio of 10:100. Extract at 70℃ with a mass ratio of extractant to water of 1:8. After extraction for 60 minutes, perform solid-liquid separation to obtain extract and solid residue.
[0065] The solid residue was pulped using a Wali pulper to obtain tobacco pulp with a freeness of 60ºSR.
[0066] The extract was concentrated under vacuum until its density reached 1.280 g / cm³. 3 The concentrate was obtained.
[0067] Add 0.1 g of guar gum powder to 99.9 g of water and stir at 60℃ and 1000 r / min for 10 min to obtain a guar gum aqueous solution.
[0068] Add 1 gram of nanocellulose to the above guar gum aqueous solution and stir at room temperature and 3600 r / min for 15 min to obtain a mixed solution.
[0069] Prepare 100g of a mixture of tobacco pulp and powdered calcium carbonate (median particle size 160 mesh) at a dry weight ratio of 80:20. Add 101g of a mixed slurry (containing 0.1g of dry guar gum and 1.0g of dry nanocellulose) to obtain a mixed pulp. Form the mixture using a dynamic sheeting machine at a pulp concentration of 1%, and dry the sheet base at 90℃ until the moisture content is 15% and the sheet base weight is 50g / m³. 2 .
[0070] Example 2
[0071] Soak 100g of softwood pulp fiber board in water for 4-8 hours, then decompose it with a 15% decomposition concentration. Mix the decomposed pulp fiber board with powdered tobacco raw material (median particle size of 100 mesh) at a mass ratio of 10:100. Extract at 70℃ with a mass ratio of extract to water of 1:8. After extraction for 60 minutes, perform solid-liquid separation to obtain the extract and solid residue.
[0072] The solid residue was pulped using a Wali pulper to obtain tobacco pulp with a freeness of 60ºSR.
[0073] The extract was concentrated under vacuum until its density reached 1.280 g / cm³. 3 The concentrate was obtained.
[0074] Add 0.1 g of guar gum powder to 99.9 g of water and stir at 60℃ and 1000 r / min for 10 min to obtain a guar gum aqueous solution.
[0075] Add 1 gram of nanocellulose to the above guar gum aqueous solution and stir at room temperature and 3600 r / min for 15 min to obtain a mixed solution.
[0076] Prepare 100g of a mixture of tobacco pulp and powdered calcium carbonate (median particle size 115 mesh) at a dry weight ratio of 80:20. Add 101g of a mixed slurry (containing 0.1g of dry guar gum and 1.0g of dry nanocellulose) to obtain a mixed pulp. Form the mixture using a dynamic sheeting machine at a pulp concentration of 1%, and dry the sheet base at 90℃ until the moisture content is 15% and the sheet base weight is 52g / m³. 2 .
[0077] Example 3
[0078] Soak 100g of softwood pulp fiber board in water for 4-8 hours, then decompose it with a 15% decomposition concentration. Mix the decomposed pulp fiber board with powdered tobacco raw material (median particle size of 150 mesh) at a mass ratio of 10:100. Extract at 70℃ with a mass ratio of extractant to water of 1:8. After extraction for 60 minutes, perform solid-liquid separation to obtain extract and solid residue.
[0079] The solid residue was pulped using a Wali pulper to obtain tobacco pulp with a freeness of 60ºSR.
[0080] The extract was concentrated under vacuum until its density reached 1.280 g / cm³. 3 The concentrate was obtained.
[0081] Add 0.1 g of guar gum powder to 99.9 g of water and stir at 60℃ and 1000 r / min for 10 min to obtain a guar gum aqueous solution.
[0082] Add 1 gram of nanocellulose to the above guar gum aqueous solution and stir at room temperature and 3600 r / min for 15 min to obtain a mixed solution.
[0083] Prepare 100g of a mixture of tobacco pulp and powdered calcium carbonate (median particle size 160 mesh) at a dry weight ratio of 75:25. Add 101g of a mixed slurry (containing 0.1g of dry guar gum and 1.0g of dry nanocellulose) to obtain a mixed pulp. Form the mixture using a dynamic sheeting machine at a pulp concentration of 1%, and dry the sheet base at 90℃ until the moisture content is 15%, with a sheet base weight of 55g / m³. 2 .
[0084] Example 4
[0085] Soak 100g of softwood pulp fiber board in water for 4-8 hours, then decompose it with a 15% decomposition concentration. Mix the decomposed pulp fiber board with powdered tobacco raw material (median particle size of 150 mesh) at a mass ratio of 10:100. Extract at 70℃ with a mass ratio of extractant to water of 1:8. After extraction for 60 minutes, perform solid-liquid separation to obtain extract and solid residue.
[0086] The solid residue was pulped using a Wali pulper to obtain tobacco pulp with a freeness of 60ºSR.
[0087] The extract was concentrated under vacuum until its density reached 1.280 g / cm³. 3 The concentrate was obtained.
[0088] Add 0.1 g of guar gum powder to 99.9 g of water and stir at 60℃ and 1000 r / min for 10 min to obtain a guar gum aqueous solution.
[0089] Add 1 gram of nanocellulose to the above guar gum aqueous solution and stir at room temperature and 3600 r / min for 15 min to obtain a mixed solution.
[0090] Prepare 100g of a mixture of tobacco pulp and powdered calcium carbonate (median particle size 160 mesh) at a dry weight ratio of 70:30. Add 101g of a mixed slurry (containing 0.1g of dry guar gum and 1.0g of dry nanocellulose) to obtain a mixed pulp. Form the mixture using a dynamic sheeting machine at a pulp concentration of 1%, and dry the sheet base at 90℃ until the moisture content is 15% and the sheet base weight is 53g / m³. 2 .
[0091] Comparative Example 1
[0092] Soak 100g of softwood pulp fiber board in water for 4-8 hours, then decompose it with a 15% decomposition concentration. Mix the decomposed pulp fiber board with powdered tobacco raw material (median particle size of 150 mesh) at a mass ratio of 10:100. Extract at 70℃ with a mass ratio of extractant to water of 1:8. After extraction for 60 minutes, perform solid-liquid separation to obtain extract and solid residue.
[0093] The solid residue was pulped using a Wali pulper to obtain tobacco pulp with a freeness of 60ºSR.
[0094] The extract was concentrated under vacuum until its density reached 1.280 g / cm³. 3 The concentrate was obtained.
[0095] Add 0.1 g of guar gum powder to 99.9 g of water and stir at 60℃ and 1000 r / min for 10 min to obtain a guar gum aqueous solution.
[0096] Prepare 100g of a mixture by mixing tobacco pulp and powdered calcium carbonate (median particle size 160 mesh) at a dry weight ratio of 80:20. Add 100g of guar gum aqueous solution (containing 0.1g of dry guar gum) to obtain a mixed pulp. Form the mixture using a dynamic sheeting machine at a pulp concentration of 1%, and dry the sheet base at 90℃ until the moisture content is 15% and the sheet base weight is 55g / m³. 2 .
[0097] Comparative Example 2
[0098] Soak 100g of softwood pulp fiber board in water for 4-8 hours, then decompose it with a 15% decomposition concentration. Mix the decomposed pulp fiber board with tobacco raw material (tobacco waste, particle size range 50-100 mesh, median particle size 80 mesh) at a mass ratio of 10:100. Extract at 70℃ with a mass ratio of extract to water of 1:8. After extraction for 60 minutes, perform solid-liquid separation to obtain extract and solid residue.
[0099] The solid residue was pulped using a Wali pulper to obtain tobacco pulp with a freeness of 60ºSR.
[0100] The extract was concentrated under vacuum until its density reached 1.280 g / cm³. 3 The concentrate was obtained.
[0101] Add 0.1 g of guar gum powder to 99.9 g of water and stir at 60℃ and 1000 r / min for 10 min to obtain a guar gum aqueous solution.
[0102] Add 1 gram of nanocellulose to the above guar gum aqueous solution and stir at room temperature and 3600 r / min for 15 min to obtain a mixed solution.
[0103] Prepare 100g of a mixture of tobacco pulp and powdered calcium carbonate (particle size range 100-120 mesh, median particle size 115 mesh) at an oven-dry ratio of 80:20. Add 101g of a mixed slurry (containing 0.1g oven-dry guar gum and 1.0g oven-dry nanocellulose) to obtain a mixed pulp. Form the mixture using a dynamic sheeting machine at a pulp concentration of 1%, and dry the sheet base at 90℃ until the moisture content is 15% and the sheet base weight is 60g / m³. 2 .
[0104] The inorganic filler content of the reconstituted tobacco leaf substrates obtained in the above embodiments and comparative examples was detected, and the results are shown in Table 1.
[0105] Table 1. Calcium carbonate content in reconstituted tobacco leaf base
[0106]
[0107] The coating solution was applied to the reconstituted tobacco leaf substrates prepared in Examples 1, 3, 4, and Comparative Example 1 at a coating rate of 40%. The substrates were then dried at 80°C to remove 12% moisture, resulting in a yield of 100 ± 10 g / m³. 2 The reconstituted tobacco leaves were shredded, rolled into cigarettes, and the smoke composition was measured as shown in Table 2.
[0108] Table 2. Smoke Indicators of Reconstituted Tobacco Leaves with Different Calcium Carbonate Contents
[0109]
[0110] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims
1. A method for preparing reconstituted tobacco leaf base with high inorganic filler content, characterized in that, Includes the following steps: Step (1): Powder the tobacco raw material to obtain powdered tobacco raw material. The median particle size of the powdered inorganic filler is larger than that of the powdered tobacco raw material. The difference between the powdered inorganic filler and the median particle size of the powdered tobacco raw material is used as the numerator, and the median particle size of the powdered tobacco raw material is used as the denominator. The calculated deviation is less than or equal to 20%. The particle size range of both the powdered tobacco raw material and the powdered inorganic filler is 100-160 mesh. Step (2): Mix the powdered tobacco raw material and the fiber raw material and then extract them to obtain the extract and solid residue. The fiber raw material is coniferous and / or hardwood pulp fiberboard. Step (3): Pulping the solid residue to a degree of beating of 55ºSR-75ºSR to obtain tobacco pulp; Step (4): Add nanocellulose to a guar gum aqueous solution with a mass concentration of 0.1-0.5% to obtain a mixed solution, wherein the mass concentration of nanocellulose in the mixed solution is 0.1-1.0%; Step (5): Add the mixed adhesive liquid and powdered inorganic filler to the tobacco pulp to obtain the mixed pulp. The powdered inorganic filler is at least one of calcium carbonate and silica. The dry weight ratio of the mixed adhesive liquid, powdered inorganic filler and tobacco pulp is (0.5-1.5):(20-30):(70-80). Step (6): The mixed slurry is formed and dried to obtain the reconstituted tobacco leaf base.
2. The method for preparing reconstituted tobacco leaf base with high inorganic filler content according to claim 1, characterized in that, The deviation between the median particle size of the powdered tobacco raw material and the median particle size of the powdered inorganic filler in step (1) is less than 15% and greater than 10%.
3. The method for preparing reconstituted tobacco leaf base with high inorganic filler content according to claim 1, characterized in that, The mass ratio of powdered tobacco raw material to fiber raw material in step (2) is 100:(10-15); The extraction process in step (2) is a water extraction process, and the parameters of the water extraction process are as follows: the mass ratio of extract to water is 1:(7-10), the water temperature is 65℃-75℃, and the extraction time is 55min-65min.
4. The method for preparing reconstituted tobacco leaf base with high inorganic filler content according to claim 1, characterized in that, The guar gum aqueous solution in step (4) is prepared by the following method: cationic guar gum is added to water and stirred for 5-10 minutes at a stirring speed of 800-1600 r / min to obtain a guar gum aqueous solution with a mass concentration of 0.1-0.5%; The specific steps (4) are as follows: Nanocellulose is added to a guar gum aqueous solution at a stirring speed of 3200-3600 r / min and stirred for 10-15 min to obtain a mixed solution, wherein the mass concentration of nanocellulose in the mixed solution is 0.1-1.0%.
5. The method for preparing reconstituted tobacco leaf substrate with high inorganic filler content according to claim 1, characterized in that, The drying temperature in step (6) is 90℃-120℃, the moisture content of the reconstituted tobacco leaf base is 15-25%, and the quantitative content is 50-62g / m³. 2 .
6. A method for preparing reconstituted tobacco with high inorganic filler content, characterized in that, Includes the following steps: The extract is coated onto the reconstituted tobacco leaf substrate prepared by the method of preparing reconstituted tobacco leaf substrate with high inorganic filler content as described in any one of claims 1 to 5, and then dried to obtain reconstituted tobacco leaf.
7. A reconstituted tobacco leaf with high inorganic filler content, characterized in that, The reconstituted tobacco leaf with high inorganic filler content is prepared by the method for preparing reconstituted tobacco leaf with high inorganic filler content as described in claim 6, wherein the mass percentage of powdered inorganic filler in the reconstituted tobacco leaf base is 15-25%.
Citation Information
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