CN110574956A - characterization method for quality stability of paper-making reconstituted tobacco slurry - Google Patents
characterization method for quality stability of paper-making reconstituted tobacco slurry Download PDFInfo
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- CN110574956A CN110574956A CN201810583536.9A CN201810583536A CN110574956A CN 110574956 A CN110574956 A CN 110574956A CN 201810583536 A CN201810583536 A CN 201810583536A CN 110574956 A CN110574956 A CN 110574956A
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- average length
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- 241000208125 Nicotiana Species 0.000 title claims abstract description 31
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 31
- 239000002002 slurry Substances 0.000 title claims description 20
- 238000012512 characterization method Methods 0.000 title claims description 8
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000010009 beating Methods 0.000 claims abstract description 11
- 238000005070 sampling Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 238000004537 pulping Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000011268 mixed slurry Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0078—Testing material properties on manufactured objects
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Paper (AREA)
Abstract
the invention provides a method for characterizing the quality stability of paper-making reconstituted tobacco pulp, which comprises the steps of firstly dividing a pulp batch into T (T is more than or equal to 3) time periods at equal intervals, and forming T +1 sampling time points according to a time sequence; then measuring the beating degree, wet weight, water retention value, number average length, weight average length and width of the sample at the point i; and finally, calculating the average value of the index variation coefficients within a batch time range, and judging the quality stability of the paper-making reconstituted tobacco pulp according to the average value of the variation coefficients. The invention adopts the average value of the variation coefficient of 6 indexes such as the beating degree, the wet weight, the water retention value, the number average length, the weight average length, the width and the like, and can comprehensively and systematically represent the quality stability of the paper-making reconstituted tobacco pulp.
Description
Technical Field
The invention relates to the technical field of tobacco manufacturing, in particular to a characterization method for quality stability of paper-making reconstituted tobacco slurry.
Background
The domestic paper-making method reconstituted tobacco is usually produced by adopting a two-step method, the effective components of tobacco are fully soaked by adopting a solvent, then the tobacco extract is concentrated and backfilled on a tobacco substrate, and the key production procedures comprise the processes of extraction, concentration, pulping, papermaking, coating and the like. Pulping comprises two parts: firstly, the extracted tobacco raw material is pulped, and the aim is to improve the uniformity of the tobacco substrate; and secondly, the added fiber is pulped, so that the physical strength of the tobacco substrate is improved. The quality evaluation of the mixed slurry obtained in the pulping process is mainly carried out by adopting two indexes of the pulping degree and the wet weight at present. However, the fiber properties of the tobacco raw material and the added fiber are very different, and it is difficult to fully evaluate the quality of the mixed slurry only by the two indexes. In the actual production process, small fluctuation of the beating degree and the wet weight often occurs, and the situation that the difference of the wet weight is large under the condition of the same beating degree also occurs. These instability factors directly affect the quality control level of the following paper making section. Therefore, when the quality of the slurry is evaluated, some additional evaluation parameters are necessary to be introduced to measure the stability of the slurry.
Chinese patent 'A paper-making process reconstituted tobacco slurry uniformity degree characterization method' (application number: 201310750057.9) discloses a method for characterizing slurry uniformity degree by detecting net surfing concentration and concentrated white water concentration at different moments and calculating variation coefficients thereof; chinese patent 'characterization method of uniformity of size based on dryness of paper-making reconstituted tobacco size' (application number: 201611149104.4) discloses a method for characterizing the uniformity of size by detecting the net-feeding concentration and the concentration of concentrated white water at different moments and calculating the variation coefficient of the net-feeding concentration and the concentration of the concentrated white water.
however, the above patent is only considered from the aspect of slurry concentration, and the paper-making reconstituted tobacco slurry is a mixture of fibers with various properties, so that it is difficult to fully evaluate the quality of the slurry.
The method provided by the invention.
disclosure of Invention
The invention provides a method for representing the quality stability of paper-making reconstituted tobacco pulp, which can comprehensively and systematically represent the quality stability of the paper-making reconstituted tobacco pulp by adopting the average value of variation coefficients of 6 indexes such as beating degree, wet weight, water retention value, number average length, weight average length, width and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for characterizing the quality stability of paper-making reconstituted tobacco pulp comprises the steps of dividing a pulp batch into T (T is more than or equal to 3) time periods at equal intervals, and forming T +1 sampling time points according to a time sequence; then measuring the beating degree, wet weight, water retention value, number average length, weight average length and width of the sample at the point i; and finally, calculating the average value of the index variation coefficients in a batch time range, wherein the method specifically comprises the following steps:
(1) A, B, C, D, E, F are respectively used for expressing 6 indexes of the beating degree, the wet weight, the water retention value, the number average length, the weight average length and the width, and the average value of the 6 indexes is calculated:
In the formula (1), X represents A, B, C, D, E, F;
(2) The standard deviation of 6 indexes is calculated respectively:
In the formula (2), XstStandard deviation representing 6 indices;
(3) The coefficient of variation of 6 indexes is calculated respectively:
(4) Calculating the average value of the variation coefficients of the 6 indexes:
U＝(CVA+CVB+CVC+CVD+CVE+CVF)/6 (4)
(5) and (4) judging the stability of the quality of the paper-making reconstituted tobacco pulp according to the average value U of the variation coefficient.
Further, in the step (5), if the average value U of the coefficient of variation is within the range of 0 to 0.1, the judgment stability is good, otherwise, the judgment stability is poor.
the invention has the advantages that: the method is simple and easy to implement, and the average value of the variation coefficients of 6 indexes such as the beating degree, the wet weight, the water retention value, the number average length, the weight average length and the width is adopted, so that the quality stability of the paper-making reconstituted tobacco pulp can be comprehensively and systematically represented.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments.
Example 1
a characterization method for quality stability of paper-making reconstituted tobacco slurry comprises the following steps:
(1) A slurry batch in the production process of a certain brand of paper-making reconstituted tobacco is taken as an object, the slurry batch is divided into 3 time periods at equal intervals, and 4 sampling time points are formed according to the time sequence. The method comprises the following specific steps
(2) The slurry samples at each time point i were tested for 6 indices of freeness, wet weight, water retention value, number average length, weight average length, width, etc., and the results are shown in table 1:
TABLE 1 sampling time point corresponding 6 index detection values
(3) the average value, standard deviation, coefficient of variation, and the average value of coefficient of variation of the 6 indexes were calculated, respectively, and the results are shown in table 2:
Mean, standard deviation and mean of coefficient of variation of the indices of Table 26
(4) And (4) judging the stability of the quality of the paper-making reconstituted tobacco pulp according to the average value U of the variation coefficient. If the U value is larger, the stability is poorer; otherwise, the stability is better. Specifically, a determination threshold interval may be set for the U value, and if the U value is within a range of 0 to 0.1, the determination stability is better, otherwise, the determination stability is worse. The calculated U value in example 1 was 0.028, and the stability was judged to be good.
example 2
(1) a slurry batch in the production process of a certain brand of paper-making reconstituted tobacco is taken as an object, the slurry batch is divided into 4 time periods at equal intervals, and 5 sampling time points are formed according to the time sequence. The method comprises the following specific steps
(2) And then 6 indexes such as the beating degree, the wet weight, the water retention value, the number average length, the weight average length, the width and the like are detected for the slurry sample at each time point i, and the result is shown in the table 3:
TABLE 3 detection values of 6 indexes corresponding to sampling time points
(3) Then respectively calculating the average value, standard deviation, variation coefficient and variation coefficient average value of 6 indexes, and the result is shown in table 4:
Mean, standard deviation and mean of coefficient of variation of the indices of Table 46
(4) And (4) judging the stability of the quality of the paper-making reconstituted tobacco pulp according to the average value U of the variation coefficient. The U value in this example is 0.038, and within the range of 0 to 0.1, the judgment of stability is good; while it was larger than 0.028 in example 1, so that the stability of the slurry quality was somewhat inferior to that in example 1.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (2)
1. A characterization method for quality stability of paper-making reconstituted tobacco slurry is characterized by comprising the following steps: firstly, dividing a slurry batch into T (T is more than or equal to 3) time periods at equal intervals, and forming T +1 sampling time points according to a time sequence; then measuring the beating degree, wet weight, water retention value, number average length, weight average length and width of the sample at the point i; and finally, calculating the average value of the index variation coefficients in a batch time range, wherein the method specifically comprises the following steps:
(1) a, B, C, D, E, F are respectively used for expressing 6 indexes of the beating degree, the wet weight, the water retention value, the number average length, the weight average length and the width, and the average value of the 6 indexes is calculated:
in the formula (1), X represents A, B, C, D, E, F;
(2) The standard deviation of 6 indexes is calculated respectively:
In the formula (2), the standard deviation of the index of 6 items is shown;
(3) the coefficient of variation of 6 indexes is calculated respectively:
(4) Calculating the average value of the variation coefficients of the 6 indexes:
U＝(CVA+CVB+CVC+CVD+CVE+CVF)/6 (4)
(5) and (4) judging the stability of the quality of the paper-making reconstituted tobacco pulp according to the average value U of the variation coefficient.
2. the characterization method of the quality stability of the paper-making reconstituted tobacco pulp according to claim 1, characterized in that: and (5) if the average value U of the variation coefficients is in the range of 0-0.1, judging that the stability is good, otherwise, judging that the stability is poor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810583536.9A CN110574956A (en) | 2018-06-08 | 2018-06-08 | characterization method for quality stability of paper-making reconstituted tobacco slurry |
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| CN201810583536.9A CN110574956A (en) | 2018-06-08 | 2018-06-08 | characterization method for quality stability of paper-making reconstituted tobacco slurry |
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| CN201810583536.9A Pending CN110574956A (en) | 2018-06-08 | 2018-06-08 | characterization method for quality stability of paper-making reconstituted tobacco slurry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114660272A (en) * | 2022-03-18 | 2022-06-24 | 山鹰国际控股股份公司 | Kraft paper pulp quality evaluation method |
Citations (5)
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|---|---|---|---|---|
| CN103675218A (en) * | 2013-12-31 | 2014-03-26 | 云南瑞升烟草技术（集团）有限公司 | Method for indicating uniformity of tobacco leaf pulp reproduced by using paper-making process |
| CN104166803A (en) * | 2014-08-19 | 2014-11-26 | 云南中烟工业有限责任公司 | Method for representing distribution evenness of tobacco shred structures |
| CN106153835A (en) * | 2016-08-30 | 2016-11-23 | 云南中烟工业有限责任公司 | A kind of method using Euclidean distance to judge papermaking-method reconstituted tobaccos pulp fiber distribution consistency degree |
| CN106723281A (en) * | 2016-12-13 | 2017-05-31 | 云南中烟工业有限责任公司 | Slurry uniformity characterizing method based on papermaking-method reconstituted tobaccos slurry mass dryness fraction |
| CN107665397A (en) * | 2017-07-13 | 2018-02-06 | 红云红河烟草(集团)有限责任公司 | Method for comprehensively evaluating cigarette quality control level |
-
2018
- 2018-06-08 CN CN201810583536.9A patent/CN110574956A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675218A (en) * | 2013-12-31 | 2014-03-26 | 云南瑞升烟草技术（集团）有限公司 | Method for indicating uniformity of tobacco leaf pulp reproduced by using paper-making process |
| CN104166803A (en) * | 2014-08-19 | 2014-11-26 | 云南中烟工业有限责任公司 | Method for representing distribution evenness of tobacco shred structures |
| CN106153835A (en) * | 2016-08-30 | 2016-11-23 | 云南中烟工业有限责任公司 | A kind of method using Euclidean distance to judge papermaking-method reconstituted tobaccos pulp fiber distribution consistency degree |
| CN106723281A (en) * | 2016-12-13 | 2017-05-31 | 云南中烟工业有限责任公司 | Slurry uniformity characterizing method based on papermaking-method reconstituted tobaccos slurry mass dryness fraction |
| CN107665397A (en) * | 2017-07-13 | 2018-02-06 | 红云红河烟草(集团)有限责任公司 | Method for comprehensively evaluating cigarette quality control level |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114660272A (en) * | 2022-03-18 | 2022-06-24 | 山鹰国际控股股份公司 | Kraft paper pulp quality evaluation method |
| CN114660272B (en) * | 2022-03-18 | 2022-10-21 | 山鹰国际控股股份公司 | Kraft paper pulp quality evaluation method |
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