Re-drying processing method for tobacco strips with different colors

Abstract

The invention discloses a redrying processing method for tobacco lamina with different colors, which comprises the following steps: after threshing the tobacco lamina, carrying out color identification processing on the tobacco lamina, and classifying the threshed tobacco lamina into deep color tobacco lamina and light color tobacco lamina according to a color identification result; the dark-color tobacco strips and the light-color tobacco strips after threshing are separated for leaf storage and distribution; and respectively redrying the dark-color tobacco lamina and the light-color tobacco lamina after the tobacco storage and matching: firstly redrying the dark-color tobacco lamina, then redrying the light-color tobacco lamina, and adopting redrying strategies with different intensities for the dark-color tobacco lamina and the light-color tobacco lamina. According to the redrying processing method for the tobacco strips with the different colors, after the tobacco strips are threshed and before redrying, the tobacco strips are divided into the dark color type and the light color type, each type of tobacco strips are transported separately, different process technologies and redrying parameters are adopted for processing in the subsequent process, and the quality uniformity of the tobacco strips can be improved on the premise that the redrying processing quality is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of redrying processing, and more specifically, to a method for redrying different-color tobacco leaves. Background Art

[0002] The purpose of the threshing and redrying process is to separate and redry tobacco leaves and tobacco stems, and convey cut tobacco raw materials for cigarette processing, which plays an important role in the quality of the cut tobacco formulation and cigarette products. Therefore, threshing and redrying play a key role in controlling the quality of cut tobacco raw materials and have become an important link in cigarette industrial production. At present, when setting parameters in each processing link of the redrying processing technology, the parameters are mostly adjusted according to the origin and position of the incoming materials, combined with manual observation or simple detection to ensure the moisture regain effect, leaf conditioning effect and drying effect during the processing. This empirical method often has deviations and is not easy to control. Through actual test data, it shows that although the processing characteristics of cut tobacco are related to the origin and position of cut tobacco, the settable threshold is also relatively wide, making it difficult to focus on precise adjustment of processing parameters for a certain origin and a certain position. Moreover, it is even more difficult to overall plan processing parameters to ensure the uniformity of cut tobacco quality when processing multiple origins and multiple positions.

[0003] The color of cut tobacco is an external manifestation of the internal quality of cut tobacco. Some studies have shown that the color of flue-cured tobacco leaves has a significant correlation with nicotine and total sugar in chemical components, and is also extremely significantly correlated with the quality and quantity of aroma in sensory evaluation. At present, there is no report on redrying processing of different degrees according to the color of cut tobacco.

[0004] Therefore, there is an urgent need for a method for redrying different-color tobacco leaves. Summary of the Invention

[0005] The purpose of the present invention is to provide a method for redrying different-color tobacco leaves to solve the above problems in the prior art, and to improve the uniformity of cut tobacco quality while ensuring the quality of redrying processing.

[0006] The present invention provides a method for redrying different-color tobacco leaves, which includes:

[0007] After threshing the tobacco leaves, perform color recognition processing on the tobacco leaves to classify the threshed tobacco leaves into two categories: dark-colored tobacco leaves and light-colored tobacco leaves according to the color recognition results;

[0008] Separate the threshed dark-colored tobacco leaves and light-colored tobacco leaves for leaf storage and leaf blending;

[0009] Redry the stored and blended dark-colored tobacco leaves and light-colored tobacco leaves respectively: first redry the dark-colored tobacco leaves, then redry the light-colored tobacco leaves, and adopt different-intensity redrying strategies for the dark-colored tobacco leaves and the light-colored tobacco leaves.

[0010] The different-color cut tobacco re-drying processing method as described above, wherein, preferably, after cut tobacco threshing, color recognition processing is performed on the cut tobacco to classify the threshed cut tobacco into two categories of dark-colored cut tobacco and light-colored cut tobacco according to the color recognition result, specifically including:

[0011] After cut tobacco threshing, a color recognition and classification device is used to perform color recognition processing on the cut tobacco to classify the threshed cut tobacco into two categories of dark-colored cut tobacco and light-colored cut tobacco according to the color recognition result.

[0012] The different-color cut tobacco re-drying processing method as described above, wherein, preferably, the separated storage and leaf blending of the threshed dark-colored cut tobacco and the light-colored cut tobacco include:

[0013] The storage height of the dark-colored cut tobacco is 200 mm to 600 mm, the storage height of the light-colored cut tobacco is 200 mm - 1000 mm, and the storage time of the dark-colored cut tobacco in the leaf storage cabinet does not exceed 1 hour, and the storage time of the light-colored cut tobacco in the leaf storage cabinet does not exceed 2 hours.

[0014] The different-color cut tobacco re-drying processing method as described above, wherein, preferably, the dark-colored cut tobacco and the light-colored cut tobacco after storage and leaf blending are respectively re-dried: first, the dark-colored cut tobacco is re-dried, and then the light-colored cut tobacco is re-dried, and different-intensity re-drying strategies are adopted for the dark-colored cut tobacco and the light-colored cut tobacco, including:

[0015] For the dark-colored cut tobacco, the temperatures of each drying zone are: the temperature of the first drying zone is 63°C - 67°C, the temperature of the second drying zone is 73°C - 77°C, the temperature of the third drying zone is 73°C - 77°C, the temperature of the fourth drying zone is 68°C - 72°C, and the temperature of the fifth drying zone is 68°C - 72°C; the temperature of the cooling zone is 40°C - 45°C; the temperature of the re-moistening zone is 55°C - 60°C;

[0016] For the light-colored cut tobacco, the temperatures of each drying zone are: the temperature of the first drying zone is 63°C - 67°C, the temperature of the second drying zone is 68°C - 72°C, the temperature of the third drying zone is 68°C - 72°C, the temperature of the fourth drying zone is 68°C - 72°C, and the temperature of the fifth drying zone is 63°C - 67°C; the temperature of the cooling zone is 35°C - 40°C; the temperature of the re-moistening zone is 45°C - 50°C.

[0017] The different-color cut tobacco re-drying processing method as described above, wherein, preferably, the dark-colored cut tobacco and the light-colored cut tobacco after storage and leaf blending are respectively re-dried: first, the dark-colored cut tobacco is re-dried, and then the light-colored cut tobacco is re-dried, and different-intensity re-drying strategies are adopted for the dark-colored cut tobacco and the light-colored cut tobacco, and further include:

[0018] For the dark flue-cured tobacco slices, the re-drying process is as follows: re-dry the moisture of the flue-cured tobacco slices to 8%-9%, and then re-moisten the moisture of the flue-cured tobacco slices to 10.5%-11.5% through the re-moistening area;

[0019] For the light flue-cured tobacco slices, the re-drying process is as follows: re-dry the moisture of the flue-cured tobacco slices to 10%-11%, and then re-moisten the moisture of the flue-cured tobacco slices to 11.5%-12.5% through the re-moistening area.

[0020] For the above-mentioned re-drying processing method of flue-cured tobacco slices of different colors, preferably, the re-drying processing method of flue-cured tobacco slices of different colors further includes:

[0021] Separate and package the re-dried dark flue-cured tobacco slices and the light flue-cured tobacco slices.

[0022] For the above-mentioned re-drying processing method of flue-cured tobacco slices of different colors, preferably, the separate packaging of the re-dried dark flue-cured tobacco slices and the light flue-cured tobacco slices includes:

[0023] After the dark flue-cured tobacco slices are packed and formed, the height of the tobacco slices swelling beyond the tobacco box in the box is less than 40 mm, the core temperature of the box is 40℃-45℃, the moisture content of the leaves is 11.5%-12.5%, and the density deviation rate in the box ≤7%;

[0024] After the light flue-cured tobacco slices are packed and formed, the height of the tobacco slices swelling beyond the tobacco box in the box is less than 50 mm, the core temperature of the box is 35℃-40℃, the moisture content of the leaves is 11.7%-12.3%, and the density deviation rate in the box ≤8%.

[0025] The present invention provides a re-drying processing method for flue-cured tobacco slices of different colors. After the flue-cured tobacco slices are threshed and before re-drying, the flue-cured tobacco slices are divided into two categories: dark and light. Each category of flue-cured tobacco slices is transported separately, and different process technologies and re-drying parameters are adopted for subsequent processing. It can improve the quality uniformity of the flue-cured tobacco slices while ensuring the re-drying processing quality; compared with the conventional re-dried flue-cured tobacco slices, the chemical components and sensory quality of the re-dried dark flue-cured tobacco slices are both good, and the quality of the finished flue-cured tobacco slices has been improved. It can be considered for use in higher-grade formulations, alleviating the contradiction in the supply of high-quality raw materials to a certain extent, and having good practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described below in conjunction with the drawings, where:

[0027] Figure 1 is a flowchart of an embodiment of the re-drying processing method for flue-cured tobacco slices of different colors provided by the present invention;

[0028] Figure 2 is a structural schematic diagram of a color recognition and classification device.

[0029] Description of the reference numerals: 1 - Dilution area, 2 - Color recognition area, 3 - Dark cut tobacco belt, 4 - Light cut tobacco belt, 5 - First fan, 6 - Second fan. Detailed implementation manners

[0030] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and in no way limits the present disclosure, its application, or its use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, the compositions of materials, numerical expressions, and numerical values set forth in these embodiments should be construed as merely exemplary and not as limitations.

[0031] The terms "first", "second", and the like used in the present disclosure do not denote any order, quantity, or importance, but are merely used to distinguish different parts. The terms such as "including" or "comprising" mean that the elements before this word cover the elements listed after this word, and do not exclude the possibility of also covering other elements. The terms such as "upper" and "lower" are only used to represent the relative positional relationship, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0032] In the present disclosure, when it is described that a specific component is located between a first component and a second component, there may or may not be an intermediate component between the specific component and the first component or the second component. When it is described that a specific component is connected to other components, the specific component may be directly connected to the other components without an intermediate component, or may not be directly connected to the other components but have an intermediate component.

[0033] All terms used in the present disclosure (including technical terms or scientific terms) have the same meaning as understood by those of ordinary skill in the art to which the present disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as those, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0034] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and devices should be regarded as part of the specification.

[0035] The color of cut tobacco is the external manifestation of its internal quality. Studies have shown that there is a significant correlation between the color of flue-cured tobacco leaves and nicotine and total sugar in chemical components, and there is also a highly significant correlation with the quality and quantity of aroma in sensory evaluation. In view of this, color can be used as a means of regulating to improve the uniformity of the appearance quality and internal quality of finished cut tobacco. Through on-site experiments, the inventor found that there is a highly significant correlation between the processing characteristics of cut tobacco and its color. Therefore, by setting different processing parameters for cut tobacco of different colors, the effect can often be achieved with half the effort.

[0036] As Figure 1 shown, in the actual implementation process of the re-drying processing method for cut tobacco of different colors provided in this embodiment, it specifically includes the following steps:

[0037] Step S1: After the cut tobacco is threshed, color recognition processing is performed on the cut tobacco to classify the threshed cut tobacco into two categories: dark cut tobacco and light cut tobacco according to the color recognition result.

[0038] Specifically, after the cut tobacco is threshed, a color recognition and classification device is used to perform color recognition processing on the cut tobacco to classify the threshed cut tobacco into two categories: dark cut tobacco and light cut tobacco according to the color recognition result.

[0039] In an implementation manner of the present invention, as Figure 2 shown, the color recognition and classification device includes: a cut tobacco color recognition belt, the cut tobacco color recognition belt includes a spreading area 1 and a color recognition area 2 arranged in sequence, the color recognition area 2 is provided with a color sensor (not shown), and the color recognition area 2 at the rear end of the color recognition device is branched into a dark cut tobacco belt 3 and a light cut tobacco belt 4. Among them, the spreading area 1 spreads the cut tobacco through a soft scraper to spread the incoming material as thin as possible to one layer. Further, a first blower 5 is provided at the connection between the spreading area 1 and the dark cut tobacco belt 3 for blowing the dark cut tobacco into the dark cut tobacco belt 3; a second blower 6 is provided at the connection between the spreading area 1 and the light cut tobacco belt 4 for blowing the light cut tobacco into the light cut tobacco belt 4 to realize the on-line distinction between dark cut tobacco and light cut tobacco.

[0040] Step S2: Store and blend the threshed dark cut tobacco and light cut tobacco separately.

[0041] Among them, the storage height of the dark cut tobacco is 200 mm to 600 mm, the storage height of the light cut tobacco is 200 mm - 1000 mm, and moreover, the storage time of the dark cut tobacco in the leaf storage cabinet does not exceed 1 hour, and the storage time of the light cut tobacco in the leaf storage cabinet does not exceed 2 hours.

[0042] Step S3: Redrying the dark cut tobacco and the light cut tobacco after leaf storage and leaf blending respectively: First, redry the dark cut tobacco, then redry the light cut tobacco, and adopt different redrying strategies for the dark cut tobacco and the light cut tobacco.

[0043] Among them, the cut tobacco redrying equipment usually adopts a mesh belt type redryer. Among them, the drying area is divided into five zones. In specific implementation, set the temperature of the drying area according to the cut tobacco flow rate and color, and adopt the arc constant temperature method to adopt different redrying strategies for cut tobacco of different colors. Among them, arc constant temperature means that the temperature setting changes in a curve.

[0044] Specifically, for the dark cut tobacco, the temperatures of each drying zone are: the temperature of the first drying zone is 63°C - 67°C, for example 65°C, the temperature of the second drying zone is 73°C - 77°C, for example 75°C, the temperature of the third drying zone is 73°C - 77°C, for example 75°C, the temperature of the fourth drying zone is 68°C - 72°C, for example 70°C, the temperature of the fifth drying zone is 68°C - 72°C, for example 70°C; the temperature of the cooling zone is 40°C - 45°C; the temperature of the conditioning zone is 55°C - 60°C; the redrying process is: redry the cut tobacco moisture to 8% - 9%, for example 8.5%, and after passing through the conditioning zone, the moisture of the dried cut tobacco is conditioned to 10.5% - 11.5%, for example 11%.

[0045] For the light cut tobacco, the temperatures of each drying zone are: the temperature of the first drying zone is 63°C - 67°C, for example 65°C, the temperature of the second drying zone is 68°C - 72°C, for example 70°C, the temperature of the third drying zone is 68°C - 72°C, for example 70°C, the temperature of the fourth drying zone is 68°C - 72°C, for example 70°C, the temperature of the fifth drying zone is 63°C - 67°C, for example 65°C; the temperature of the cooling zone is 35°C - 40°C; the temperature of the conditioning zone is 45°C - 50°C; the redrying process is: redry the cut tobacco moisture to 10% - 11%, for example 10.5%, and after passing through the conditioning zone, the moisture of the dried cut tobacco is conditioned to 11.5% - 12.5%, for example 12%.

[0046] Further, in an implementation manner of the method for redrying cut tobacco of different colors in the present invention, it further includes:

[0047] Step S4: Separately package the redried dark cut tobacco and light cut tobacco.

[0048] Specifically, after the dark cut tobacco is packed and formed, the height of the cut tobacco in the box that bulges beyond the cigarette box is less than 40 mm, the temperature of the box core is 40°C - 45°C, the moisture content of the leaves is 11.5% - 12.5%, for example 12%, and the density deviation rate (DVR) in the box ≤ 7%;

[0049] After the light-colored cut tobacco is packed and formed, the height of the cut tobacco in the box that swells beyond the tobacco box is less than 50 mm, the core temperature of the box is 35°C - 40°C, the moisture content of the leaves is 11.7% - 12.3%, for example 12%, and the density deviation rate (DVR) in the box ≤ 8%.

[0050] In an embodiment of the present invention, a total of 20,000 dan of a blending module composed of B2F, C2F, and C3F from a certain production area in 2023 is selected. Among them, 10,000 dan is subjected to conventional threshing and redrying, and the finished product is recorded as A. Another 10,000 dan is subjected to redrying and processing of different-colored cut tobacco according to steps S1 - S3 of the present invention, and the finished product is recorded as B. After comparing with the conventional redrying method (10,000 dan), half an hour after the flow rate is stable in the same shift, the chemical components and sensory quality of the cut tobacco after threshing are detected.

[0051] Among them, the temperatures of each drying zone in the conventional redrying method are: drying zone 1 is 70°C, drying zone 2 is 75°C, drying zone 3 is 75°C, drying zone 4 is 75°C, and drying zone 5 is 70°C; the temperature of the cooling zone is (40 - 45)°C; the temperature of the conditioning zone is (55 - 60)°C. The redrying process is: the moisture of the cut tobacco is redried to 8.5%, and the moisture of the redried cut tobacco is conditioned to 12% through the conditioning zone.

[0052] After packing and forming, the height of the cut tobacco in the box that swells beyond the tobacco box is less than 50 mm, the core temperature of the box is (40 - 45)°C, the moisture content of the leaves is (12 ± 0.5)%, and the density deviation rate (DVR) in the box ≤ 8%.

[0053] Compare the chemical components and sensory quality of the cut tobacco of the finished product A obtained by the conventional redrying method and the finished product B obtained by redrying and processing different-colored cut tobacco, as shown in Table 1 and Table 2. It can be seen from Table 1 and Table 2 that there are obvious differences in the chemical components and sensory quality of the cut tobacco between the finished product A and the finished product B. Among them, the sugar and nicotine contents of the dark-colored cut tobacco in the finished product B are higher, the nicotine coefficient of variation is lower, the quality is more uniform, and the quality of the aroma, the amount of aroma, and the aftertaste are all higher than the other two, indicating that its redrying method is more uniform and the quality of the cut tobacco after redrying is also better; the sugar and nicotine contents of the light-colored cut tobacco in the finished product B are lower, the nicotine coefficient of variation is lower than that of the finished product A obtained by the conventional redrying method, the quality is more uniform compared with the conventional redrying, and the quality of the aroma, the amount of aroma, the off-flavor, the irritation, and the aftertaste are all lower, which is related to the relatively poor quality of the light-colored cut tobacco itself.

[0054] Table 1 Comparison of chemical components of cut tobacco of the finished product A obtained by the traditional redrying method and the finished product B obtained by redrying and processing different-colored cut tobacco (unit: %)

[0055]

[0056] Table 2 Comparison of sensory quality of cut tobacco of the finished product A obtained by the traditional redrying method and the finished product B obtained by redrying and processing different-colored cut tobacco

[0057]

[0058] Through comparison, it is found that the color-separated re-drying method of the present invention can effectively improve the quality uniformity of the re-dried tobacco leaves by distinguishing between dark and light tobacco leaves and classifying and re-drying them with different intensities. Compared with the tobacco leaves re-dried by conventional methods, the dark tobacco leaves after re-drying show good chemical components and sensory quality, and the quality of the finished tobacco leaves is improved. They can be considered for use in higher-grade formulations, alleviating the contradiction in the supply of high-quality raw materials to a certain extent, and having good practical significance.

[0059] The re-drying processing method for tobacco leaves of different colors provided by the embodiment of the present invention divides the tobacco leaves into two categories, dark and light, after leaf threshing and before re-drying. Each category of tobacco leaves is transported separately, and different process technologies and re-drying parameters are adopted for subsequent processing, which can improve the quality uniformity of the tobacco leaves while ensuring the quality of re-drying processing. Compared with the tobacco leaves re-dried by conventional methods, the dark tobacco leaves after re-drying show good chemical components and sensory quality, and the quality of the finished tobacco leaves is improved. They can be considered for use in higher-grade formulations, alleviating the contradiction in the supply of high-quality raw materials to a certain extent, and having good practical significance.

[0060] So far, the embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0061] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be equivalently replaced without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A method for redrying cut tobacco of different colors, characterized in that, Including: After threshing cut tobacco leaves, color recognition processing is performed on the cut tobacco leaves to classify the threshed cut tobacco leaves into two categories, namely dark cut tobacco leaves and light cut tobacco leaves, according to the color recognition results; The threshed dark cut tobacco leaves and the light cut tobacco leaves are separately stored and proportioned; The threshed dark cut tobacco leaves and the light cut tobacco leaves after storage and proportioning are respectively redried: first, the dark cut tobacco leaves are redried, then the light cut tobacco leaves are redried, and different intensity redrying strategies are adopted for the dark cut tobacco leaves and the light cut tobacco leaves.

2. The method for redrying different-color cut tobacco according to claim 1, characterized in that, After threshing cut tobacco leaves, color recognition processing is performed on the cut tobacco leaves to classify the threshed cut tobacco leaves into two categories, namely dark cut tobacco leaves and light cut tobacco leaves, according to the color recognition results, specifically including: After threshing cut tobacco leaves, a color recognition and classification device is used to perform color recognition processing on the cut tobacco leaves to classify the threshed cut tobacco leaves into two categories, namely dark cut tobacco leaves and light cut tobacco leaves, according to the color recognition results.

3. The method for redrying different-color cut tobacco according to claim 1, characterized in that, The separately storing and proportioning the threshed dark cut tobacco leaves and the light cut tobacco leaves includes: The storage height of the dark cut tobacco leaves is 200 mm to 600 mm, the storage height of the light cut tobacco leaves is 200 mm - 1000 mm, and the storage time of the dark cut tobacco leaves in the leaf storage cabinet does not exceed 1 hour, and the storage time of the light cut tobacco leaves in the leaf storage cabinet does not exceed 2 hours.

4. The method for redrying different-color cut tobacco according to claim 1, wherein The separately redrying the threshed dark cut tobacco leaves and the light cut tobacco leaves after storage and proportioning: first, the dark cut tobacco leaves are redried, then the light cut tobacco leaves are redried, and different intensity redrying strategies are adopted for the dark cut tobacco leaves and the light cut tobacco leaves, including: For the dark cut tobacco leaves, the temperatures in the drying zones are: the temperature in the first drying zone is 63°C - 67°C, the temperature in the second drying zone is 73°C - 77°C, the temperature in the third drying zone is 73°C - 77°C, the temperature in the fourth drying zone is 68°C - 72°C, the temperature in the fifth drying zone is 68°C - 72°C; the temperature in the cooling zone is 40°C - 45°C; the temperature in the conditioning zone is 55°C - 60°C; For the light cut tobacco leaves, the temperatures in the drying zones are: the temperature in the first drying zone is 63°C - 67°C, the temperature in the second drying zone is 68°C - 72°C, the temperature in the third drying zone is 68°C - 72°C, the temperature in the fourth drying zone is 68°C - 72°C, the temperature in the fifth drying zone is 63°C - 67°C; the temperature in the cooling zone is 35°C - 40°C; the temperature in the conditioning zone is 45°C - 50°C.

5. The method for redrying and processing cut tobacco of different colors according to claim 4, characterized in that, The separately redrying the threshed dark cut tobacco leaves and the light cut tobacco leaves after storage and proportioning: first, the dark cut tobacco leaves are redried, then the light cut tobacco leaves are redried, and different intensity redrying strategies are adopted for the dark cut tobacco leaves and the light cut tobacco leaves, further including: For the dark cut tobacco leaves, the redrying process is: redrying the moisture of the cut tobacco leaves to 8% - 9%, and conditioning the moisture of the redried cut tobacco leaves to 10.5% - 11.5% through the conditioning zone; For the light cut tobacco leaves, the redrying process is: redrying the moisture of the cut tobacco leaves to 10% - 11%, and conditioning the moisture of the redried cut tobacco leaves to 11.5% - 12.5% through the conditioning zone.

6. The method for redrying different-color cut tobacco according to claim 1, wherein The redrying processing method for cut tobacco leaves of different colors further includes: The redried dark cut tobacco leaves and the light cut tobacco leaves are separately packaged.

7. The method for redrying different-color cut tobacco according to claim 6, characterized in that, The separate packaging of the redried dark tobacco leaves and the light tobacco leaves includes: After the dark tobacco leaves are packed and formed, the height of the tobacco leaves swelling beyond the tobacco box in the box is less than 40 mm, the core temperature of the box is 40°C - 45°C, the moisture content of the leaves is 11.5% - 12.5%, and the density deviation rate in the box is ≤7%; After the light tobacco leaves are packed and formed, the height of the tobacco leaves swelling beyond the tobacco box in the box is less than 50 mm, the core temperature of the box is 35°C - 40°C, the moisture content of the leaves is 11.7% - 12.3%, and the density deviation rate in the box is ≤8%.

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