CN104207320B - In a kind of papermaking-method reconstituted tobaccos, tobacco sheet base is to the absorbefacient assay method of coating fluid - Google Patents
In a kind of papermaking-method reconstituted tobaccos, tobacco sheet base is to the absorbefacient assay method of coating fluid Download PDFInfo
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Abstract
The invention provides tobacco sheet base in a kind of papermaking-method reconstituted tobaccos, to the absorbefacient assay method of coating fluid, to comprise the following steps successively: A, choose test sample; B, by test sample be fixed on the test platform of optical contact angle tester; The test condition of C, setting optical contact angle tester: 1., the initial volume of buret drippage coating fluid drop is set to 4 μ l ~ 10 μ l; 2., video camera shooting frame number is 13/second; 3., minute is 1 ~ 5 second; D, test start, in 0 ~ X(X=1 ~ 5) in second, obtain the photo captured by optics contact angle tester when T second, obtain the residual volume V of coating fluid drop on this photo simultaneously
t; E, the absorbability Y of tobacco sheet base to coating fluid are characterized by: Y=V
0-V
t.This assay method passes through optical contact angle tester monitoring and test sample to the absorption process of coating fluid, at short notice intuitively, exactly coating fluid, in the Volume Changes of tobacco sheet primary surface, and then characterizes tobacco sheet base to the absorbability of coating fluid in the on-the-spot painting process of simulated production for it.
Description
Technical field
The present invention relates to the technical field that papermaking-method reconstituted tobaccos physical characteristic measures, particularly to relate in a kind of papermaking-method reconstituted tobaccos tobacco sheet base to the absorbefacient assay method of coating fluid.
Background technology
In tobacco leaf production field, reconstituted tobacco be with the tobacco waste such as offal, offal for primary raw material, utilize the method for physics and chemistry to carry out the product of recombinating.In tobacco redrying and Cigarette processing process, some waste materials such as offal, broken offal and the low tobacco leaf of some use value can be produced unavoidably, this kind of tobacco material is made reconstituted tobacco recycled, not only remarkable in economical benefits, and cigarette smoke nicotine amount can also be regulated and reduce tar content in cigarette, improve the interior quality of cigarette.At present, the preparation method of reconstituted tobacco mainly contains paper process, roll-in method and thick slurry processes, wherein the most obvious with the advantage of papermaking-method reconstituted tobaccos: 1, density is little, Filling power is high; 2, mechanical resistant good processability, becomes silk rate high; 3, burning velocity is fast, and releasing content of coke tar is only about 50% of tobacco leaf; 4, product has plasticity, can carry out artificial regulatory according to actual needs to its physical property and intrinsic chemical index.So, papermaking-method reconstituted tobaccos to raising tobacco material utilization rate, improve the aspects such as cigarette structure, reducing tar and reducing harm all there is positive role, therefore papermaking-method reconstituted tobaccos has become the important and indispensable formula material of Chinese-style cigarette.
At present, the production technology of papermaking-method reconstituted tobaccos all adopts two-step method: the first step, the offal produced in production of cigarettes, process, broken offal, smoked sheet are added water after mixing in varing proportions and extract at a certain temperature, the material after having extracted realizes Separation of Solid and Liquid after mechanical presses; Second step, solid matter obtains tobacco sheet base through paper technology, the extract of liquid phase is obtained coating fluid after concentrating, add various adjuvant, and coating fluid returns through coating process and is applied on tobacco sheet base, through super-dry, cut after obtained papermaking-method reconstituted tobaccos product.In the production process of papermaking-method reconstituted tobaccos, tobacco flavor material containing the overwhelming majority in tobacco material in coating fluid, painting process is the regrouping process of tobacco material in essence, therefore during painting process, the absorbability of tobacco sheet base to coating fluid determines the quality of papermaking-method reconstituted tobaccos product, also determines the total yield of papermaking-method reconstituted tobaccos product.
According to the planning of countries tobacco " 12 ", using improving spreading rate as the important means promoting papermaking-method reconstituted tobaccos product quality.But, all the time little about the document of papermaking-method reconstituted tobaccos tobacco sheet base to the absorbability detection method this respect of coating fluid, the Ke Liemu absorption measurement instrument used in paper industry mainly used by current detection tobacco sheet base to the absorbent properties of coating fluid, Ke Liemu absorption measurement instrument is called for short " pole-climbing ", Cleaning Principle characterizes according to the height that coating fluid is creeped on tobacco sheet base within a certain period of time, although this detection method is simple, but the creep speed of coating fluid on sheet base is very slow, reach visual obvious distance change, detection time is generally very long, often need tens to dozens of minutes, and the painting process speed of tobacco sheet base is very fast in actual production, absorption process is in several seconds, therefore Ke Liemu absorption measurement instrument very difficult (as in several seconds) at short notice detects tobacco sheet base to the absorbing state of coating fluid, therefore there is very big error in testing result.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of detection speed fast and in the high papermaking-method reconstituted tobaccos of the testing result degree of accuracy tobacco sheet base to the absorbefacient assay method of coating fluid.
For achieving the above object, the invention provides tobacco sheet base in a kind of papermaking-method reconstituted tobaccos, to the absorbefacient assay method of coating fluid, to comprise the following steps:
A, intercept a part as test sample from the tobacco sheet base sample of papermaking-method reconstituted tobaccos;
B, by test sample be fixed on the test platform of optical contact angle tester;
The test condition of C, setting optical contact angle tester:
1., the initial volume of the buret drippage coating fluid drop of optical contact angle tester is set to V
0;
2., the video camera shooting frame number of optical contact angle tester is that N opens/second;
3., the minute of optical contact angle tester is X second;
D, test start, and X tests end after second;
In 0 ~ X second, obtain the photo captured by optics contact angle tester when T second, obtain the residual volume V of coating fluid drop on this photo simultaneously
t, 0≤T≤X;
E, the absorbability Y of tobacco sheet base to coating fluid are characterized by: Y=V
0-V
t;
According to the time order and function order arrangement of photo captured by optical contact angle tester, V
tchange larger, then tobacco sheet base is better to the absorbability of coating fluid; V
tchange less, then the absorbability of tobacco sheet base to coating fluid is poorer.
Preferably, in described steps A, described test sample surface is smooth, without wrinkle and without obvious spot.
Further, before carrying out described steps A, first by the tobacco sheet base of a papermaking-method reconstituted tobaccos through moisture equilibration, obtain described tobacco sheet base sample;
When carrying out moisture equilibration, tobacco sheet base is laid on the sample stage of constant temperature and humidity, equilibrium water conten 48 hours;
The condition of constant temperature and humidity is: temperature 22 ± 1 DEG C, humidity 60 ± 5%.
Preferably, described test sample is the part sheared from more than the 10cm at tobacco sheet base sample edge, and test sample is rectangle shape.
Further, described test sample has multiple, and the VT in described step D is the mean value of the residual volume of coating fluid drop on multiple parallel testing sample after T second.
Preferably, in described step D, the Z within 0 ~ X second captured by optical contact angle tester opens in photo, choose W and open photo, described W ﹤ Z, and the shooting time that selected W opens photo is spacedly distributed by the sequencing of shooting time.
Preferably, in described step C, V
0be 4 μ l ~ 10 μ l; N=13; X is 1 ~ 5 second.
Further, the test platform of described optical contact angle tester is provided with two fixtures be oppositely arranged, two fixtures are connected by connecting rod, each fixture includes train wheel bridge parallel up and down and lower plate, described train wheel bridge is connected by screw with lower plate, and between train wheel bridge and lower plate, forming a grasping part, the two ends of described test sample are fixed in the grasping part of two fixtures respectively.
As mentioned above, in the papermaking-method reconstituted tobaccos that the present invention relates to, tobacco sheet base is to the absorbefacient assay method of coating fluid, has following beneficial effect:
This assay method is continuously taken pictures within the testing time of setting by optical contact angle tester, with the absorption process of monitoring and test sample to coating fluid, and obtain at the not residual volume of coating fluid drop on test specimens product in the same time, absorbefacient good or poor to coating fluid with characterization test sample, so this assay method can at short notice intuitively, exactly coating fluid, in the Volume Changes of tobacco sheet primary surface, and then characterizes tobacco sheet base to the absorbability of coating fluid in the on-the-spot painting process of simulated production.
Accompanying drawing explanation
Fig. 1 is the structural representation of the test platform of optical contact angle tester in the present invention.
Fig. 2 is the absorption process figure of tobacco sheet base in 4 seconds being numbered PJ1 in embodiment one.
Fig. 3 is the absorption process figure of tobacco sheet base in 3 seconds being numbered PJ2 in embodiment two.
Fig. 4 is the absorption process figure of tobacco sheet base in 3 seconds being numbered PJ3 in embodiment three.
Element numbers explanation
1 test platform
2,3 fixtures
21,31 train wheel bridges
22,32 lower plates
23,33 grasping parts
41,42,43,44 screws
5 test samples
6,7 connecting rods
8 coating fluid drops
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this description can understand other advantages of the present invention and effect easily.
Notice, structure, ratio, size etc. that this description institute accompanying drawings illustrates, content all only in order to coordinate description to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the present invention can produce and the object that can reach, still all should drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, quote in this description as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
The invention provides tobacco sheet base in a kind of papermaking-method reconstituted tobaccos, to the absorbefacient assay method of coating fluid, to comprise the following steps:
A, intercept a part as test sample from the tobacco sheet base sample of papermaking-method reconstituted tobaccos;
B, by test sample be fixed on the test platform of optical contact angle tester;
The test condition of C, setting optical contact angle tester:
1., the initial volume of the buret drippage coating fluid drop of optical contact angle tester is set to V
0;
2., the video camera of optical contact angle tester shooting frame number is that N opens/second, and namely optical contact angle tester starts shooting for 0 second, every
second is a shooting photo just, and is automatically calculated the residual volume of coating fluid drop on this photo by the software of configuration;
3., the minute of optical contact angle tester is X second;
D, test start, and X tests end after second;
In 0 ~ X second, obtain the photo captured by optics contact angle tester when T second, obtain the residual volume V of coating fluid drop on this photo simultaneously
t, 0≤T≤X, namely obtains all photos that optical contact angle tester is captured within 0 ~ X second;
E, the absorbability Y of tobacco sheet base to coating fluid are characterized by: Y=V
0-V
t, when this absorbability Y is namely characterized in T moment (0 ~ X second in any time), tobacco sheet base is to the absorbability of coating fluid;
In above-mentioned formula, described V
0buret for optical contact angle tester drips the initial volume of coating fluid drop on test sample, the residual volume of coating fluid drop on the photo namely 0 second time captured by optics contact angle tester; Described V
tfor the residual volume of coating fluid drop on the photo when T second captured by optics contact angle tester, namely absorb the volume of coating fluid in test sample surface after T second;
In addition, according to the time order and function order arrangement of photo captured by optical contact angle tester, V
tchange larger, then tobacco sheet base is better to the absorbability of coating fluid; V
tchange less, then the absorbability of tobacco sheet base to coating fluid is poorer.
In the papermaking-method reconstituted tobaccos that the present invention relates to, tobacco sheet base is a kind of measuring method based on volumetric method to the absorbefacient assay method of coating fluid, utilizes optical contact angle analyzer dynamically to take tobacco sheet base test sample continuously to the Volume Changes of test sample surface coating fluid in coating fluid absorption process to be characterized in certain soak time tobacco sheet base to the absorbability of coating fluid.It adopts optical contact angle tester as detecting instrument, described optical contact angle tester is used to the contact angle of tracer liquid to the surface of solids, the volume of surface of solids drop is calculated further by contact angle, along with the carrying out absorbed, the liquid-drop contact angle of the surface of solids changes thereupon, and the droplet size of the surface of solids also changes simultaneously.In the present embodiment, the manufacturer of the optical contact angle measuring instrument adopted is German Ke Lvshi KRUSS company, INSTRUMENT MODEL is DSA100, and this optical contact angle tester has the function that drop titration mode is automatic Titration, the software of outfit can calculate droplet size automatically according to the photo of shooting.This assay method is continuously taken pictures within the testing time of setting by optical contact angle tester, with the absorption process of monitoring and test sample to coating fluid, and obtain at the not residual volume of coating fluid drop on test specimens product in the same time, absorbefacient good or poor to coating fluid with characterization test sample, so this assay method can at short notice intuitively, exactly coating fluid, in the Volume Changes of tobacco sheet primary surface, and then characterizes tobacco sheet base to the absorbability of coating fluid in the on-the-spot painting process of simulated production.If the absorbability of tobacco sheet base to coating fluid is bad, then the preparation technology parameter of adjustable coating fluid and the technological parameter of painting process, to improve the absorbability of tobacco sheet base to coating fluid, the final quality improving papermaking-method reconstituted tobaccos product.
In the present embodiment, the test condition set by optical contact angle tester is:
1., the initial volume of the buret of optical contact angle tester drippage coating fluid drop is set to 4 μ l ~ 10 μ l, and the diameter of described buret is 1.839mm;
2., the video camera of optical contact angle tester shooting frame number is 13/second, and namely optical contact angle tester starts shooting for 0 second, a just shooting photo every 0.05 second; Certainly, when practical operation, the photo taken within X second due to video camera is more, in an embodiment in order to can significant change be found out, operating personnel can need to select voluntarily to intercept multiple pictures and corresponding data interval time, as intercepted the residual volume of coating fluid drop on a photo and this photo every 0.5 second according to detection;
3., the minute of optical contact angle tester is 1 ~ 5 second, because of tobacco sheet base in real production technology to the soak time of coating fluid at about 1 ~ 5 second, therefore when measuring, minute is set to 1 ~ 5 second, with more close to the soak time in actual production process, thus improve the degree of accuracy of testing result;
4. under the test atmospheric environment, specified at GB/T1644, test sample is tested.
Preferably, described test sample has multiple, as 5 ~ 10, and the V in described step D
tfor the mean value of the residual volume of coating fluid drop on multiple parallel testing sample after T second, it is by repeatedly testing multiple test sample equally, get its mean value and carry out statistical analysis as test result, the final degree of accuracy effectively improving testing result.
Further, in described steps A, test sample manufacturing process be: first by the tobacco sheet base of a papermaking-method reconstituted tobaccos through moisture equilibration, obtain described tobacco sheet base sample; When carrying out moisture equilibration, be laid on the sample stage of constant temperature and humidity by tobacco sheet base, equilibrium water conten 48 hours, the condition of constant temperature and humidity is: temperature 22 ± 1 DEG C, humidity 60 ± 5%.From more than the 10cm position at the good tobacco sheet base sample edge of water balance (this position answer not damaged, without folding line, without obvious spot and surfacing) cut 6 1cm × 10cm Rectangular samples with shear, this Rectangular samples i.e. described test sample, and test sample surface is smooth, without wrinkle and without obvious spot.Above-mentioned tobacco sheet base sample is through moisture equilibration, the problem of moisture fluctuation is there is with the test sample eliminated caused by each side factors such as ambient humidity, temperature, technological fluctuation, and the moisture fluctuation testing sample can affect test sample to the absorbability of coating fluid, thus greatly reduce metrical error.Meanwhile, test sample is the part of tobacco sheet base sample more than edge 10cm, therefore this part can not be contacted with the hand of operating personnel, reduces metrical error further.
Further, as shown in Figure 1, the test platform 1 of described optical contact angle tester is provided with two fixtures be oppositely arranged, and is respectively fixture 2 and fixture 3, and fixture 2 is connected by connecting rod 6, connecting rod 7 with fixture 3.Described fixture 2 is made up of train wheel bridge 21 parallel up and down and lower plate 22, forms a grasping part 23 between the train wheel bridge 21 of fixture 2 and lower plate 22, and described train wheel bridge 21 is connected respectively by screw 41, screw 43 with the two ends, left and right of lower plate 22; Similarly, fixture 3 is made up of train wheel bridge 31 parallel up and down and lower plate 32, a grasping part 33 is formed between fixture 3 train wheel bridge 31 and lower plate 32, described train wheel bridge 31 is connected respectively by screw 42, screw 44 with the two ends, left and right of lower plate 32, and the rear and front end of described test sample 5 is fixed in the grasping part 23 of fixture 2 and the grasping part 33 of fixture 3 respectively.Rotate forward or reversely rotate the distance between train wheel bridge 21 and lower plate 22 in screw 41 and screw 43 adjustable fixture 2, namely adjust the size of grasping part 23 in fixture 2; Rotate forward or reversely rotate the distance between train wheel bridge 31 and lower plate 32 in screw 42 and screw 44 adjustable fixture 3, namely the size of grasping part 33 in fixture 3 is adjusted, thus adjustable test sample 5 is fixed on fastness in fixture 2 and fixture 3 and flatness, after sample 6 to be tested fixes, after the test condition of setting instrument, test can be started.
In addition, in actual mechanical process, because the video camera shooting frame number of optical contact angle tester is 13/second, therefore very multiple pictures can be photographed within X second, also just cause the coating fluid drop residual body product value V detected
tvery many, and two of adjacent moment coating fluid drop residual volume V
tthe change of value is not obvious.In order to see that test sample is to the change of coating fluid absorption process more significantly, the testing result that in the application, select time span is larger carrys out comparative descriptions, namely the Z within 0 ~ X second captured by optical contact angle tester opens in photo, choose W by the sequencing of shooting time and open photo, described W ﹤ Z, and the shooting time that selected W opens photo is spacedly distributed.
The three kinds of different tobacco sheet bases produced respectively by company below exemplify three embodiments, grow tobacco the test sample of sheet base to the absorption process of coating fluid to illustrate within X second three.
Embodiment one
Tobacco sheet base is numbered PJ1, the initial volume V of buret drippage coating fluid drop
0be 10 μ l, minute X be 4 seconds, the test sample that carries out testing be 6, be respectively sample 1, sample 2, sample 3, sample 4, sample 5 and sample 6, in 4 seconds, select a photo every 500 milliseconds, therefore selection 9 photos, i.e. W=9 altogether.Tobacco sheet base PJ1 in 4 seconds to the absorption process of coating fluid as shown in Fig. 2 and table 1.
In Fig. 2, Fig. 2 a is that on tobacco sheet base PJ1, remaining coating fluid drop 8, Fig. 2 b is that on tobacco sheet base PJ1, remaining coating fluid drop 8, Fig. 2 c is remaining coating fluid drop 8 on tobacco sheet base PJ1 4 seconds time 2 seconds time 0 second time.
Table 1 tobacco sheet base PJ1 in 4 seconds to the absorption process of coating fluid
Embodiment two
Tobacco sheet base is numbered PJ2, the initial volume V of buret drippage coating fluid drop
0be 8 μ l, minute X be 3 seconds, the test sample that carries out testing be 6, be respectively sample 1, sample 2, sample 3, sample 4, sample 5 and sample 6, in 3 seconds, select a photo every 500 milliseconds, therefore selection 7 photos, i.e. W=7 altogether.Tobacco sheet base PJ2 in 3 seconds to the absorption process of coating fluid as shown in Fig. 3 and table 2.
In Fig. 3, Fig. 3 d is that on tobacco sheet base PJ2, remaining coating fluid drop 8, Fig. 3 e is that on tobacco sheet base PJ2, remaining coating fluid drop 8, Fig. 3 f is remaining coating fluid drop 8 on tobacco sheet base PJ2 3 seconds time 2 seconds time 0 second time.
Table 2 tobacco sheet base PJ2 in 3 seconds to the absorption process of coating fluid
Embodiment three
Tobacco sheet base is numbered PJ3, the initial volume V of buret drippage coating fluid drop
0be 6 μ l, minute X be 3 seconds, the test sample that carries out testing be 6, be respectively sample 1, sample 2, sample 3, sample 4, sample 5 and sample 6, in 3 seconds, select a photo every 500 milliseconds, therefore selection 7 photos, i.e. W=7 altogether.Tobacco sheet base PJ3 in 3 seconds to the absorption process of coating fluid as shown in Fig. 4 and table 3.
In Fig. 4, Fig. 4 g is that on tobacco sheet base PJ3, remaining coating fluid drop 8, Fig. 4 h is that on tobacco sheet base PJ3, remaining coating fluid drop 8, Fig. 4 j is remaining coating fluid drop 8 on tobacco sheet base PJ3 3 seconds time 2 seconds time 0 second time.
Table 3 tobacco sheet base PJ3 in 3 seconds to the absorption process of coating fluid
In above table, the described coefficient of variation=standard deviation/mean value.
Can be drawn by table 1, table 2 and table 3: along with the carrying out absorbed, volume test sample remaining coating fluid gradually reduces, the uptake of test sample to coating fluid increases gradually, calculate the coefficient of variation at each soak time by the detected value of 6 samples simultaneously, the coefficient of variation obtained all is less than 20%, shows that testing result reliability is higher.Therefore the assay method that the present invention relates to comparatively appreciably characterizes papermaking-method reconstituted tobaccos tobacco sheet base to the absorbability of coating fluid, in producing, adjust coating fluid preparation technology parameter and painting process technological parameter provides Data support comparatively accurately, the final tobacco sheet base that improves is to the absorptivity of coating fluid.
In sum, the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (6)
1. in papermaking-method reconstituted tobaccos, tobacco sheet base, to the absorbefacient assay method of coating fluid, is characterized in that: comprise the following steps:
A, intercept a part as test sample from the tobacco sheet base sample of papermaking-method reconstituted tobaccos;
B, by test sample be fixed on the test platform of optical contact angle tester;
The test condition of C, setting optical contact angle tester:
1., the initial volume of the buret drippage coating fluid drop of optical contact angle tester is set to V
0, V
0be 6 μ l ~ 10 μ l;
2., the video camera shooting frame number of optical contact angle tester is that N opens/second, N=13;
3., the minute of optical contact angle tester is X second, and X is 1 ~ 5 second;
D, test start, and X tests end after second;
In 0 ~ X second, obtain the photo captured by optics contact angle tester when T second, obtain the residual volume V of coating fluid drop on this photo simultaneously
t, 0≤T≤X;
Z within 0 ~ X second captured by optical contact angle tester opens in photo, choose W and open photo, described W ﹤ Z, and the shooting time that selected W opens photo is spacedly distributed by the sequencing of shooting time;
E, the absorbability Y of tobacco sheet base to coating fluid are characterized by: Y=V
0-V
t;
According to the time order and function order arrangement of photo captured by optical contact angle tester, V
tchange larger, then tobacco sheet base is better to the absorbability of coating fluid; V
tchange less, then the absorbability of tobacco sheet base to coating fluid is poorer.
2. assay method according to claim 1, is characterized in that: in described steps A, and described test sample surface is smooth, without wrinkle and without obvious spot.
3. assay method according to claim 1, is characterized in that: before carrying out described steps A, first by the tobacco sheet base of a papermaking-method reconstituted tobaccos through moisture equilibration, obtain described tobacco sheet base sample;
When carrying out moisture equilibration, tobacco sheet base is laid on the sample stage of constant temperature and humidity, equilibrium water conten 48 hours;
The condition of constant temperature and humidity is: temperature 22 ± 1 DEG C, humidity 60 ± 5%.
4. assay method according to claim 1, is characterized in that: described test sample is the part sheared from more than the 10cm at tobacco sheet base sample edge, and test sample is rectangle shape.
5. assay method according to claim 1, is characterized in that: described test sample has multiple, the V in described step D
tfor the mean value of the residual volume of coating fluid drop on multiple parallel testing sample after T second.
6. assay method according to claim 1, it is characterized in that: the test platform of described optical contact angle tester is provided with two fixtures be oppositely arranged, two fixtures are connected by connecting rod, each fixture includes train wheel bridge parallel up and down and lower plate, described train wheel bridge is connected by screw with lower plate, and between train wheel bridge and lower plate, forming a grasping part, the two ends of described test sample are fixed in the grasping part of two fixtures respectively.
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| CN104730213A (en) * | 2015-03-06 | 2015-06-24 | 云南中烟工业有限责任公司 | Method for evaluating quality of cigarette essence and fragrance by taking contact angle as index |
| CN106418649A (en) * | 2016-10-26 | 2017-02-22 | 云南中烟再造烟叶有限责任公司 | Reconstituted tobacco coating quantity on-line detection control system and control method |
| CN107314953B (en) * | 2017-08-16 | 2019-06-04 | 江苏中烟工业有限责任公司 | A kind of measuring method of paper-process reconstituted tobacco coating fluid permeance property |
| CN108896444A (en) * | 2018-05-11 | 2018-11-27 | 深圳天溯计量检测股份有限公司 | A kind of water droplet angle tester |
| CN109612994B (en) * | 2018-11-30 | 2022-02-15 | 福建中烟工业有限责任公司 | Image capturing detection device and method for absorption performance of reconstituted tobacco to coating liquid |
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| US8474306B1 (en) * | 2009-06-05 | 2013-07-02 | University Of Northern Iowa Research Foundation | Method and apparatus for measurement of fluid properties |
| CN101865807A (en) * | 2010-04-15 | 2010-10-20 | 上海梭伦信息科技有限公司 | Apparatus and method for testing solid-liquid dynamic and static contact angles by actual liquid droplet method |
| CN102706547A (en) * | 2012-05-28 | 2012-10-03 | 红云红河烟草(集团)有限责任公司 | Method for representing wetting performance of cigarette feed liquid |
| CN102894462B (en) * | 2012-10-11 | 2015-07-08 | 湖北中烟工业有限责任公司 | Method for improving water absorbability of reconstituted tobacco substrates |
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