A method for reducing the coefficient of variation of tobacco leaf tearing degree in tobacco leaf tearing degree detection

Abstract

The present invention discloses a method for reducing the tearing degree variation coefficient of tobacco leaves in the tearing degree detection of tobacco leaves, comprising the following steps: obtaining tobacco leaves whose tearing degree needs to be detected; adopting a sampling method suitable for the tobacco leaves to perform sampling; placing the tobacco leaves at a temperature and humidity suitable for the tobacco leaves, and placing them at the temperature and humidity for a time period suitable for the tobacco leaves; when sampling, choosing whether to retain the veins in the sample; after completing the sampling, using a tearing degree detector to test the tearing degree of the sample. For tobacco leaves from different origins, when performing tearing degree detection, the method can be used to obtain the appropriate sampling method, humidity, temperature, and time period parameters, and then after the corresponding treatment, the detection is performed, which can greatly reduce the tearing degree variation coefficient.

Description

Technical Field

[0001] The present invention relates to the technical field related to tobacco leaf tearing degree detection, and in particular to a method for reducing the coefficient of variation of tobacco leaf tearing degree in tobacco leaf tearing degree detection. Background Art

[0002] The tearing strength test of tobacco leaves is of great significance to the analysis of the processing characteristics of raw tobacco. When testing the tearing strength of tobacco leaves from a specific part produced at a specific origin, it is necessary to sample the tobacco leaves. At present, when sampling, only the size requirements of the samples are taken into consideration. After the size requirements are met, the samples are kept at room temperature for 48 hours before the tearing strength test begins. When this test method is used, after the tobacco leaves are divided into different samples and the tearing strength tests are carried out separately, the tearing strength variation coefficient will be large. Refer to the table below for the experiments conducted by the applicant using this method:

[0003] Test samples: Under the premise of keeping the factors that may affect the tearing degree, such as origin, grade, and part, unchanged, the tearing degree of Yunnan B1F raw tobacco is tested:

[0004]

[0005] The coefficient of variation is the ratio of the standard deviation to the mean value. Obviously, the coefficient of variation obtained by this method is relatively large. The tearing degree deviation is relatively large, which is not conducive to the analysis of the processing characteristics of the original cigarette.

[0006] Therefore, how to provide a method that can reduce the coefficient of variation of tobacco leaf tearing degree in tobacco leaf tearing degree detection has become a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a method for reducing the coefficient of variation of tobacco leaf tearing degree in tobacco leaf tearing degree detection. The specific technical solution is as follows:

[0008] A method for reducing the coefficient of variation of tobacco leaf tearing degree in tobacco leaf tearing degree detection comprises the following steps:

[0009] Obtain tobacco leaves that need to be tested for tearing degree;

[0010] Sampling is carried out using a sampling method suitable for the tobacco leaf;

[0011] placing the tobacco leaves at a temperature and humidity suitable for the tobacco leaves, and placing them at the temperature and humidity for a period of time suitable for the tobacco leaves;

[0012] When sampling, choose whether to keep the veins in the sample;

[0013] After sampling, the tearing strength of the samples is tested using a tearing strength tester.

[0014] Preferably, the step of "sampling by adopting a sampling method suitable for the tobacco leaf" comprises the following:

[0015] When the parameters of temperature, humidity and the time period of placement at the temperature and humidity are constant, the method with the lowest coefficient of variation of tearing degree under different sampling methods of nine-point sampling method and three-point sampling method is determined through experiments. The three-point sampling method includes sampling at the top of the cigarette frame, sampling in the middle of the cigarette frame, sampling at the bottom of the cigarette frame and diagonal sampling.

[0016] Preferably, the step of "placing the tobacco leaves at a temperature and humidity suitable for the tobacco leaves, and placing the tobacco leaves at the temperature and humidity for a period of time suitable for the tobacco leaves" includes the following:

[0017] When the sampling method suitable for the tobacco leaf is determined and the time period is certain, the suitable temperature and humidity are determined through experiments so that the coefficient of variation of tearing degree is the lowest under the temperature and humidity.

[0018] After determining the appropriate sampling method for the tobacco leaf and determining the appropriate temperature and humidity, the appropriate time period is determined through experiments so that the coefficient of variation of the tearing degree is the lowest when the tobacco leaf is placed during this time period.

[0019] Preferably, the step of "selecting whether to retain the veins in the sample" comprises the following:

[0020] When the appropriate sampling method, humidity, temperature and time period are determined, the coefficient of variation of tearing degree is lowest when the veins are retained in the sample.

[0021] Preferably, the tearing strength is tested using an Elmendorf tearing tester, and the size of the sample is 63mm*50mm.

[0022] Preferably, when sampling, the following cutter is used for sampling:

[0023] The cutter comprises a carrier having a carrier surface, on which continuously distributed cutting edges are formed, and the continuously distributed cutting edges enclose a cutting shape, wherein the cutting shape is a square shape with a size of 63 mm*50 mm.

[0024] The present invention provides a method for reducing the coefficient of variation of tobacco leaf tearing degree in tobacco leaf tearing degree detection, which has the following technical effects:

[0025] In the method, before testing the sample, the appropriate sampling method, temperature and humidity and the time period for placing under the temperature and humidity are determined, and the samples are sampled under these conditions respectively to complete the sample preparation. The tearing degree variation coefficient obtained by this method is greatly reduced, so that the tearing degree detection is conducive to the analysis of the processing characteristics of the original tobacco. For tobacco leaves from different origins, when testing the tearing degree, the method can be used to obtain the appropriate sampling method, humidity, temperature, and time period parameters, and then after the corresponding treatment, the test can be carried out, which can greatly reduce the tearing degree variation coefficient. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with embodiments.

[0027] The present invention provides a method for reducing the coefficient of variation of tobacco leaf tearing degree in tobacco leaf tearing degree detection, comprising the following steps:

[0028] Obtain tobacco leaves that need to be tested for tearing degree;

[0029] Sampling is carried out using a sampling method suitable for the tobacco leaf;

[0030] placing the tobacco leaves at a temperature and humidity suitable for the tobacco leaves, and placing them at the temperature and humidity for a period of time suitable for the tobacco leaves;

[0031] When sampling, choose whether to keep the veins in the sample;

[0032] After sampling, the tearing strength of the samples is tested using a tearing strength tester.

[0033] In the method, before testing the sample, the appropriate sampling method, temperature and humidity and the time period for placing under the temperature and humidity are determined, and the samples are sampled under these conditions respectively to complete the sample preparation. The tearing degree variation coefficient obtained by this method is greatly reduced, so that the tearing degree detection is conducive to the analysis of the processing characteristics of the original tobacco. For tobacco leaves from different origins, when testing the tearing degree, the method can be used to obtain the appropriate sampling method, humidity, temperature, and time period parameters, and then after the corresponding treatment, the test can be carried out, which can greatly reduce the tearing degree variation coefficient.

[0034] The step of "sampling by adopting a sampling method suitable for the tobacco leaf" includes the following:

[0035] When the parameters of temperature, humidity and the time period of placement at the temperature and humidity are constant, the method with the lowest coefficient of variation of tearing degree under different sampling methods of nine-point sampling method and three-point sampling method is determined through experiments. The three-point sampling method includes sampling at the top of the cigarette frame, sampling in the middle of the cigarette frame, sampling at the bottom of the cigarette frame and diagonal sampling.

[0036] Among them, the step of "placing the tobacco leaves at a temperature and humidity suitable for the tobacco leaves, and placing them at the temperature and humidity for a time period suitable for the tobacco leaves" includes the following:

[0037] When the sampling method suitable for the tobacco leaf is determined and the time period is certain, the suitable temperature and humidity are determined through experiments so that the coefficient of variation of tearing degree is the lowest under the temperature and humidity.

[0038] After determining the appropriate sampling method for the tobacco leaf and determining the appropriate temperature and humidity, the appropriate time period is determined through experiments so that the coefficient of variation of the tearing degree is the lowest when the tobacco leaf is placed during this time period.

[0039] The step of "selecting whether to retain the veins in the sample" includes the following:

[0040] When the appropriate sampling method, humidity, temperature and time period are determined, the coefficient of variation of tearing degree is lowest when the veins are retained in the sample.

[0041] In a specific implementation manner, the tear strength is tested using an Elmendorf tear tester, and the size of the sample is 63 mm*50 mm.

[0042] When sampling, use the following cutter to take samples:

[0043] The cutter comprises a carrier having a carrier surface, on which continuously distributed cutting edges are formed, and the continuously distributed cutting edges enclose a cutting shape, wherein the cutting shape is a square shape with a size of 63 mm*50 mm.

[0044] For a tobacco leaf produced in Yunnan, a specific implementation method of the method is as follows:

[0045] Sampling method selection:

[0046] In the case of the same origin and the same grade, using different sampling methods, through the control variable method, the smaller the coefficient of variation of tearing degree, the better the sampling method. The details are as follows:

[0047]

[0048]

[0049]

[0050] Temperature and humidity selection: The above-mentioned diagonal sampling method is used for sampling. Under the condition of the same origin and the same grade, the samples are processed with different humidity. Through the control variable method, the smaller the coefficient of variation of tearing degree, the better the humidity.

[0051]

[0052]

[0053]

[0054]

[0055]

[0056]

[0057]

[0058] Time period selection:

[0059] In the case of the same origin and the same grade, samples are processed for different times. Through the control variable method, the smaller the coefficient of variation of tearing degree, the better the processing time.

[0060]

[0061]

[0062]

[0063]

[0064]

[0065] Whether it contains leaf veins:

[0066] Under the same origin and the same grade, using samples with and without leaf veins, the smaller the coefficient of variation of tearing degree is, the better the sample processing effect is, through the controlled variable method.

[0067]

[0068]

[0069]

[0070]

[0071] Through this method, the appropriate sampling method, temperature, humidity, time period and whether the tobacco leaf contains veins can be determined.

Claims

1. A method for reducing the coefficient of variation of tobacco leaf tearing degree in tobacco leaf tearing degree detection, characterized in that: The steps include: Obtain tobacco leaves for which tearing strength testing is required, the tobacco leaves being of the same origin and grade; The sampling method suitable for the tobacco leaf is adopted for sampling: when the parameters of temperature, humidity and the time period of placement under the temperature and humidity are constant, the method with the lowest coefficient of variation of tearing degree under different sampling methods of nine-point sampling method and three-point sampling method is determined by experiment, and the three-point sampling method includes sampling at the upper part of the tobacco frame, sampling at the middle part of the tobacco frame, sampling at the lower part of the tobacco frame and diagonal sampling; The tobacco leaves are placed at a temperature and humidity suitable for the tobacco leaves, and are placed at the temperature and humidity for a time period suitable for the tobacco leaves: when a sampling method suitable for the tobacco leaves is determined and the time period is certain, a suitable temperature and humidity are determined through experiments so that the coefficient of variation of tearing degree at the temperature and humidity is the lowest, and When the sampling method suitable for the tobacco leaf and the suitable temperature and humidity are determined, the suitable time period is determined through experiments so that the coefficient of variation of the tearing degree is the lowest when the tobacco leaf is placed during the time period; When sampling, choose whether to keep the veins in the sample: when the appropriate sampling method, humidity, temperature and time period are determined, the coefficient of variation of tearing degree is the lowest when the veins are kept in the sample. After sampling, the tearing strength of the samples is tested using a tearing strength tester.

2. The method for reducing the coefficient of variation of tobacco leaf tearing degree in tobacco leaf tearing degree detection according to claim 1, characterized in that: The tearing strength was tested using an Elmendorf tearing tester, and the sample size was 63mm*50mm.

3. The method for reducing the coefficient of variation of tobacco leaf tearing degree in tobacco leaf tearing degree detection according to claim 1, characterized in that: When sampling, use the following cutters for sampling: The cutter comprises a carrier having a carrier surface, on which continuously distributed cutting edges are formed, and the continuously distributed cutting edges enclose a cutting shape, wherein the cutting shape is a square shape with a size of 63 mm*50 mm.

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