CN109307740B - Method for rapidly estimating cut stem real-doped proportion of cut tobacco in cigarette - Google Patents
Method for rapidly estimating cut stem real-doped proportion of cut tobacco in cigarette Download PDFInfo
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Abstract
The invention discloses a method for estimating the cut stem real-doped proportion of cut tobacco in cigarettes, which comprises the following steps: testing the content of potassium and chlorine in cut leaves and cut stems; calculating the content of potassium and chlorine in the mixed material; testing cigarette in cigaretteThe potassium and chlorine content of the silk; fourthly, calculating the actual proportion of the cut stems in the cut tobacco; v to XK、XClPerforming reliability judgment, and taking XK、XClThe average value of the ratio is the actual ratio X of the cut stems in the cigarettes. The method of the invention has the advantages of no need of modeling, simplicity, rapidness and accurate and reliable result.
Description
Technical Field
The invention belongs to the technical field of tobacco, and particularly relates to a method for quickly estimating the real cut stem blending ratio of cut tobacco in cigarettes.
Background
The blending application of the cut stems in the cigarette formula has important significance for saving raw material cost, reducing harm and tar of cigarettes and the like. With the upgrading and perfecting of the cut stem making technology, the blending proportion of the cut stems is continuously improved, and the influence on the quality of cigarettes is more and more prominent. On-line test results of production samples show that the cut stem morphological structure is an important factor influencing the quality stability of cigarettes, and under the condition of the same set blending proportion of cut stems, the cut stem proportion of cut tobacco finally entering cigarettes in different cut stem morphological structures is greatly different, so that the quality stability of cigarettes is influenced. The reason is that part of the fine cut stem shreds are lost due to screening, removing, adsorbing and the like in the processes of mixing, conveying, rolling by a cigarette making machine and the like.
In recent years, with the rise of 'medium short and fine cigarettes', the parameters (such as the diameter or the length of the cigarettes) of the cigarettes are changed, so that the existing cigarette compatibility technology and cut stem processing conditions cannot meet the requirements. For example, because the diameter of a fine cigarette is small, the shredding width is usually required to be reduced in the process so as to improve the distribution uniformity of tobacco shreds, reduce the incidence rate of bamboo joint cigarettes and improve the stability of cigarette resistance. The reduction of the cutting width leads to the structural difference of the cut tobacco, so the compatible cut stem also needs to be matched in the process, and therefore, the thin-pressing and fine-cutting cut stem can be produced. In the blending process of cut stems with smaller specifications and sizes, a more serious loss phenomenon exists, namely, the ratio of the cut stems actually blended into tobacco shreds in cigarettes is lower than the design ratio, and the quality stability of the cigarettes cannot be ensured.
Chinese patent CN106896032A discloses a method for measuring the uniformity of cut tobacco, cut stems and reconstituted tobacco formula cut tobacco. The method establishes a total cellulose method for evaluating the blending uniformity of materials according to the content difference of cellulose and total sugar in tobacco shreds, cut stems and reconstituted tobacco leaves. The method does not need modeling and marker addition, is convenient to operate, but cannot represent the actual mixing proportion of the materials, particularly the cut stems.
Chinese patent CN103263069A discloses a method for representing blending uniformity of cut leaves, expanded cut stems and cut stems. The method comprises the steps of measuring the filling value and the shred breaking rate of standard samples of mixed tobacco shreds with different mixing ratios, establishing a mathematical model for correlating the mixing ratios with the filling value and the shred breaking rate of the mixed tobacco shreds, measuring the filling value and the shred breaking rate of the samples to be measured, and representing the uniformity of the mixed tobacco shreds according to the mathematical model. However, in actual production, tobacco materials are crushed to different degrees, and the filling value and the shredded tobacco rate fluctuate greatly, so that the method has low precision, and the actual mixing proportion of the materials such as cut stems and the like cannot be really represented.
Chinese patent CN104198325A discloses a method for measuring the ratio of cut stems in cut tobacco based on computer vision. The method comprises the steps of respectively acquiring images of all components in the tobacco shreds to be detected by using an image acquisition system, then acquiring image characteristics of all components in the tobacco shreds to be detected, calculating characteristic data quantity of cut stems, and establishing a characteristic database. And analyzing and identifying the components of the cut stems according to the correlation degree calculation result, sorting the cut stems in the cut tobacco to be detected by a sorting system, weighing and calculating the component proportion of the cut stems. The method has high proportion precision of the components of the cut stems, but the modeling process of the method needs a large amount of sample accumulation, and when the morphological structure of the cut stems changes, the modeling needs to be carried out again, so that the method is not flexible. Meanwhile, due to the introduction of an image acquisition system and a sorting system, the method has high cost and complex operation and is not suitable for on-line analysis and measurement of production.
Potassium and chlorine are two important chemical indexes in tobacco and are one of evaluation indexes reflecting the internal quality of tobacco. The applicant unexpectedly finds that the contents of potassium and chlorine in the cut leaves and the cut stems are stable, the contents of potassium and chlorine in the cut leaves and the contents of potassium and chlorine in the cut stems are different and stable in difference, and meanwhile, in an actual test, the error of measuring the contents of potassium and chlorine is small, the interference of other components is not easy, and the sensitivity is high.
Disclosure of Invention
In order to solve the problems, the invention discloses a method for quickly estimating the real blending proportion of cut stems in cut tobacco. The technical scheme of the invention is as follows:
all samples and potassium and chlorine contents, ratios and percentages of the present invention are in units of weight unless otherwise indicated.
A method for estimating the cut stem real-doped proportion of cut tobacco in cigarettes comprises the following steps:
respectively taking a plurality of samples of cut leaves and cut stems, testing the content of potassium and chlorine in the cut leaves according to a standard, and taking an average value as YK、YCl(ii) a Testing the content of potassium and chlorine in the cut stems according to a standard, and taking an average value and recording as GK、GCl；
② the blending proportion of the cut stems is X0Mixing cut stems and cut leaves on line, mixing in drum to form cut tobacco, calculating the potassium and chlorine contents of the cut tobacco to be HK、HCl；
Taking a plurality of samples of the tobacco shreds in the cigarettes, testing the potassium and chlorine contents of the tobacco shreds in the cigarettes according to a standard, and taking an average value and recording as PK、PCl；
Fourthly, calculating the ratio X of the cut stems in the cut tobacco of the cigarette according to the numerical valuesK、XCl：
XK＝X0-(HK-PK)/(GK-YK)
XCl＝X0-(HCl-PCl)/(GCl-YCl)；
V to XK、XClAnd judging the reliability, and if the following conditions are met:
|XK-XClwhen the | < 1.0%
Taking XK、XClThe average value of the above is the ratio X of the cut stems of the cut tobacco in the cigarette to the real cut stems:
preferably, the number of the samples in the steps I, II and III is more than 5, and the detected values of the potassium content and the chlorine content in the samples respectively meet the RSD percent which is less than or equal to 2.5 percent.
Preferably, the standard described in steps (r), (g) and (g) is YC/T426-.
The method comprises the following specific steps:
a method for rapidly estimating the cut stem real-blending proportion of cut tobacco in cigarettes mainly comprises the steps of sampling and sample preparation, content measurement, method error judgment, cut stem loss calculation, credibility judgment and cut stem real-blending proportion calculation of the cut tobacco in the cigarettes;
1. sampling and sample preparation: taking pure leaf shred, pure stem shred and tobacco shred (strip shred) in cigarette, respectively preparing more than or equal to 5 parts of parallel sample, recording the designed mixing amount X of stem shred0；
2. Content determination: respectively measuring the content of potassium and chlorine in each parallel sample according to a method specified by the measurement of the uniform mixing degree of YC/T426-;
3. method error determination: sequentially analyzing the measured values of the potassium and chlorine contents of each parallel sample, calculating and evaluating the RSD% value of the potassium and chlorine contents of each sample, and if the RSD% is more than 2.5%, re-mixing, sampling and measuring;
4. calculating the loss amount of the cut stems: if RSD% is less than or equal to 2.5%, respectively calculating the stem shred loss amount X according to the potassium and chlorine content difference values of the mixed cut tobacco and the stem shred, the blended cut tobacco and the cut tobacco in the cigarette (strip shred)SK、XSCl. Wherein HK、HCl，PK、PCl，GK、GCl，YK、YClRespectively adding potassium and chlorine contents in the mixed formula silk, tobacco shreds (strip running silk) in cigarettes, pure stem silk and pure leaf silk;
5. calculating the actual ratio X of the cut tobacco stems in the tobacco according to the following formulaK、XCl；
XK＝X0-XSK
XCl＝X0-XSCl
6. And (3) reliability judgment: to XK、XClAnd (3) carrying out reliability judgment: if | XK-XClLess than or equal to 1.0 percent, the ratio X of the stems and the shreds of the cut tobacco in the cigarette is XK、XClThe average value of (a) of (b),
if | XK-XClIf | is greater than 1.0%, the sample may not be uniform enough and the sample may need to be re-mixed for testing and calculation.
The invention has the beneficial effects that:
1. the applicant unexpectedly finds that the contents of potassium and chlorine in the cut leaves and the cut stems are stable, the contents of potassium and chlorine in the cut leaves and the contents of potassium and chlorine in the cut stems are different and stable in difference, and meanwhile, in an actual test, the error of measuring the contents of potassium and chlorine is small, the interference of other components is not easy, and the sensitivity is high. Wherein the content of potassium in the cut stems is about 2-8 times higher than that of the cut leaves, and the content of chlorine is about 4-8 times higher than that of the cut leaves.
2. The invention estimates the real cut stem blending proportion of cut tobacco (strip running tobacco) finally blended into cigarettes according to the actual state of the cut tobacco in the production process. The method has the advantages of no need of modeling, simplicity, rapidness and accurate and reliable result.
Detailed Description
The present invention will be described in more detail with reference to the following examples, but the scope of the present invention is not limited thereto.
All samples and potassium and chlorine contents, ratios and percentages of the present invention are in units of weight unless otherwise indicated.
Example 1: cut stem ratio estimation of cut tobacco in conventional cigarette
The invention discloses a method for quickly estimating the stem shred real-blending proportion of tobacco shreds in cigarettes.
Taking 5 parts of pure cut tobacco after conventional cigarettes are cut and 5 parts of pre-blended pure cut stem each by using an online cross section sampling method, wherein each part is 200 g; adding cut stems on line according to the designed cut stem mixing proportion of 10%, feeding the cut stems mixed in the roller into a cut stem storage cabinet, and then conveying the cut stems to a cigarette machine for rolling; 5 parts of tobacco shreds (shredded tobacco strips) in common cigarettes are taken from a cigarette making machine, and each part is 200 g. According to the method specified by the determination of the uniform mixing degree of YC/T426-2012 tobacco, the contents of potassium and chlorine in the pure cut tobacco, the pure cut stem and the cut tobacco (strip running tobacco) in the cigarette are determined respectively, and the contents are shown in Table 1.
TABLE 1 recording and analyzing table for content of potassium and chlorine in tobacco shred samples in conventional cigarette
And (4) judging the error of the method according to the content data of potassium and chlorine in each sample in the table 1. The measured values of the potassium and chlorine contents of all samples meet the RSD percent less than 2.5 percent, and the measurement precision of the method meets the requirement. Then calculating the stem shred loss X of the tobacco shreds in the cigarettes according to the average potassium and chlorine contents in the pure cut leaves, the pure cut stems, the blended and mixed formula shreds and the tobacco shreds in the cigarettesSK＝2.2822％、XSCl2.4563%, X of cut stem of tobacco shred (strip-running shred)K＝7.7178％、XCl7.5437%; confidence level determination result display | XK-XClThe ratio of the cut stems of the tobacco shreds in the cigarettes is X (X is 0.1741% < 1.0%)K+XCl)/2＝7.6308％。
The result of testing the stem shred mixing proportion of the cut tobacco (strip running shred) in the cigarette by using the method provided by Chinese patent CN104198325A is 7.6096%; the test method of the invention has accurate and reliable result.
Example 2: cut stem ratio estimation of cut tobacco in fine cigarette
Taking 7 parts of pure cut tobacco for fine cigarettes and 7 parts of pre-blended pure cut stems respectively by an online cross section sampling method, wherein each part is 200 g; adding the cut stems on line according to the designed pure cut stem adding proportion of 10 percent, conveying the cut stems to a cut stem storage cabinet after mixing in a roller, balancing for 2 hours, and conveying the cut stems to a cigarette machine; taking 7 parts of tobacco shreds (shredded tobacco strips) in the fine cigarette at a cigarette making machine, wherein each part is 200 g. According to the method specified by the determination of the YC/T426-2012 tobacco uniform mixing degree, the potassium and chlorine contents in the pure leaf shred, the pure stem shred, the formula shred and the tobacco shred (strip shred) samples in the fine cigarette are respectively determined, and the contents are shown in the table 2.
TABLE 2 Potassium and chlorine contents of tobacco shred samples in fine cigarette
And (3) judging the error of the method according to the potassium and chlorine content data of each sample in the table 2, wherein the measured values of the potassium and chlorine contents of each sample meet the RSD percent of less than 2.5 percent, and the measurement precision of the method meets the requirement. Then respectively calculating the pure cut stem loss X according to the potassium and chlorine content difference values of the pure cut leaves and the pure cut stems for the fine cigarettes, the blended and mixed formula cut tobacco and the final cut tobacco in the fine cigarettesSK＝3.0929％、XSCl3.1579%, X of cut stem of tobacco shred (strip-running shred) in fine cigaretteK＝6.9071％、XCl6.8421%. Reliability determination | XK-XClIf | ═ 0.065% < 1.0%, the ratio of cut stems in the tobacco shreds (slivers) in the fine cigarette is X ═ XK+XCl)/2＝6.8746％。
The result of testing the stem shred mixing proportion of the cut tobacco (strip running shred) in the fine cigarette by using the method provided by the Chinese patent CN104198325A is 6.77983%; the test method of the invention has accurate and reliable result.
Claims (2)
1. A method for estimating the cut stem real-doped proportion of cut tobacco in cigarettes is characterized by comprising the following steps:
respectively taking a plurality of samples of cut leaves and cut stems, testing the content of potassium and chlorine in the cut leaves according to a standard, and taking an average value as YK、YCl(ii) a Testing the content of potassium and chlorine in the cut stems according to a standard, and taking an average value and recording as GK、GCl；
② the blending proportion of the cut stems is X0Mixing cut stems and cut leaves on line, mixing in drum to form cut tobacco, and calculating the content of K and Cl in the cut tobacco to be HK、HCl；
Taking a plurality of samples of the tobacco shreds in the cigarettes, testing the potassium and chlorine contents of the tobacco shreds in the cigarettes according to a standard, and taking an average value and recording as PK、PCl；
Fourthly, calculating the ratio X of the cut stems in the cut tobacco of the cigarette according to the numerical valuesK、XCl：
XK＝X0-(HK-PK)/(GK-YK)
XCl＝X0-(HCl-PCl)/(GCl-YCl)；
V to XK、XClAnd judging the reliability, and if the following conditions are met:
|XK-XClwhen the | < 1.0%
Taking XK、XClThe average value of the above is the ratio X of the cut stems of the cut tobacco in the cigarette to the real cut stems:
the number of the samples is more than 5, and the detection values of the potassium content and the chlorine content in the samples respectively meet the condition that the RSD percent is less than or equal to 2.5 percent.
2. The method of claim 1, wherein the standard in steps (r), (r) and (r) is YC/T426-2012.
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| GB8600679D0 (en) * | 1986-01-13 | 1986-02-19 | Imp Group Plc | Chemical analysis of tobacco/smoking-related products |
| WO2013145437A1 (en) * | 2012-03-26 | 2013-10-03 | 日本たばこ産業株式会社 | Method for measuring menthol content |
| CN103263069B (en) * | 2013-05-09 | 2014-12-31 | 红云红河烟草(集团)有限责任公司 | Method for representing blending uniformity of cut leaves, expanded cut tobacco and cut stems |
| CN103344572A (en) * | 2013-06-24 | 2013-10-09 | 云南烟草科学研究院 | Method for evaluating blending homogeneity of cut rolled stems and regenerated cut tobaccos in cigarettes |
| CN103645110A (en) * | 2013-12-04 | 2014-03-19 | 红塔烟草(集团)有限责任公司 | Method for measuring blending ratio of expanded cut stems in cut tobacco |
| CN104198325B (en) * | 2014-09-04 | 2016-09-07 | 国家烟草质量监督检验中心 | Stem ratio measuring method in pipe tobacco based on computer vision |
| CN106896032B (en) * | 2017-03-23 | 2019-03-29 | 云南中烟工业有限责任公司 | A method of measurement pipe tobacco, stem, reconstituted tobacco cut filler uniformity |
| CN107367483A (en) * | 2017-07-18 | 2017-11-21 | 河南中烟工业有限责任公司 | A kind of online throwing of cigarette mixes the method for determination and evaluation of silk uniformity |
| CN108168991B (en) * | 2017-11-28 | 2020-07-10 | 昆明理工大学 | Method for measuring blending ratio of paper-making reconstituted tobacco in cigarettes |
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