CN112611669A - Paper absorption comprehensive performance testing method, tester and application - Google Patents
Paper absorption comprehensive performance testing method, tester and application Download PDFInfo
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 191
- 238000012360 testing method Methods 0.000 title claims abstract description 42
- CPKVUHPKYQGHMW-UHFFFAOYSA-N 1-ethenylpyrrolidin-2-one;molecular iodine Chemical compound II.C=CN1CCCC1=O CPKVUHPKYQGHMW-UHFFFAOYSA-N 0.000 claims abstract description 49
- 229920000153 Povidone-iodine Polymers 0.000 claims abstract description 49
- 229960001621 povidone-iodine Drugs 0.000 claims abstract description 49
- 238000000034 method Methods 0.000 claims abstract description 43
- 238000009792 diffusion process Methods 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- 235000019504 cigarettes Nutrition 0.000 claims description 6
- 238000010998 test method Methods 0.000 claims description 5
- 238000004043 dyeing Methods 0.000 claims description 4
- 238000004448 titration Methods 0.000 claims description 4
- 230000002745 absorbent Effects 0.000 abstract description 9
- 239000002250 absorbent Substances 0.000 abstract description 9
- 238000011056 performance test Methods 0.000 abstract description 4
- 239000000123 paper Substances 0.000 description 131
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- 239000000853 adhesive Substances 0.000 description 17
- 230000001070 adhesive effect Effects 0.000 description 17
- 239000011111 cardboard Substances 0.000 description 17
- 230000008859 change Effects 0.000 description 7
- 238000004880 explosion Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- 241000168096 Glareolidae Species 0.000 description 2
- 206010027146 Melanoderma Diseases 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 235000021018 plums Nutrition 0.000 description 1
- JLKDVMWYMMLWTI-UHFFFAOYSA-M potassium iodate Chemical compound [K+].[O-]I(=O)=O JLKDVMWYMMLWTI-UHFFFAOYSA-M 0.000 description 1
- 239000001230 potassium iodate Substances 0.000 description 1
- 229940093930 potassium iodate Drugs 0.000 description 1
- 235000006666 potassium iodate Nutrition 0.000 description 1
- 229960004839 potassium iodide Drugs 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
- G01N15/0893—Investigating volume, surface area, size or distribution of pores; Porosimetry by measuring weight or volume of sorbed fluid, e.g. B.E.T. method
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/0866—Sorption
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention discloses a method for testing the comprehensive performance of paper absorption, which is characterized in that a burette filled with a povidone iodine solution is fixed on a workbench, a certain amount of povidone iodine solution is vertically dripped at a fixed height onto paper to be detected placed on the workbench, the apparent diffusion absorption condition of droplets of the povidone iodine solution is photographed and recorded after the same time interval of each brand of paper, a certain amount of solution is dripped at the same position after the paper is completely absorbed until the paper cannot be completely absorbed, the surface solution is absorbed by absorbent paper, and the weight is weighed and increased, so that the comprehensive performance test is realized. The red-brown povidone-iodine solution is more easily and visually sensed on the apparent absorption and diffusion conditions of the solution on the paper, the absorption uniformity is quickly reflected to serve as the most important performance index, and the absorption performance of the paper is comprehensively considered from multiple aspects such as the absorption uniformity, the absorption rate and the like.
Description
Technical Field
The invention belongs to the field of paper absorption performance testing, in particular to a paper absorption comprehensive performance testing method, a tester and application.
Background
The water absorption of paper depends on the fiber property, the beating degree of pulp and the structure of paper, and in the paper production and processing process, the performance characteristics of paper of each brand, such as the absorption, folding endurance, smoothness, water content and the like, are different due to the influence of a plurality of factors such as raw materials, auxiliary materials, equipment, processes, operation methods and the like of each manufacturer. The performance characteristics directly influence the printing adaptability of paper, and the paper with poor adaptability is easy to explode ink after being printed by ink, namely the paper is folded, the ink on the surface can fall off in small fragments, the apparent quality of the paper is directly influenced, and the ink explosion frequency is higher in cold and dry winter environment.
In order to reduce the direct influence caused by ink explosion as much as possible, the detection control of the base paper is necessary. The folding endurance and the water content of the base paper of each brand are generally judged by adopting a folding endurance instrument, an indenting machine and an oven for baking the paper printed by the ink, and the method is a conventional detection means for practitioners in relevant paper industries, but the method judges the paper by only the folding endurance and the water content of the paper and cannot represent the printing adaptability of the whole paper. Although the existing brighness absorbency tester can distinguish the absorbency of paper to a certain extent, the problem is that the detection is focused on the maximum water carrying capacity that the paper can absorb in a long time, but cannot represent the water amount that the paper can absorb rapidly in a short time, in other words, the water absorption rate of the paper cannot be determined. And the conventional milky white water-based adhesive is difficult to visually observe the apparent absorption and diffusion conditions.
Therefore, a new testing method needs to be proposed.
Disclosure of Invention
In response to at least one of the above-mentioned deficiencies or needs for improvement in the prior art, particularly the tendency of cigarette wrapping paper to burst after ink printing, the invention provides a test method for detecting the adhesive absorption performance of each brand of paper in the processing production of cigarette packets, which is characterized in that a burette filled with povidone iodine solution is fixed on a workbench, a certain amount of povidone iodine solution is vertically dripped at a fixed height to be dripped on paper to be detected placed on the workbench, the apparent diffusion absorption condition of droplets of the povidone iodine solution is photographed and recorded after the same time interval of each brand of paper, and after the absorption is completed, and (3) dripping a certain amount of solution at the same position until the solution cannot be completely absorbed, sucking away the surface solution by using absorbent paper, weighing and increasing the weight, and realizing comprehensive performance test.
The invention adopts the reddish brown povidone iodine solution to replace the milky water-based adhesive, has the same absorption influence on paper, can more easily and visually sense the apparent absorption and diffusion condition of the solution on the paper, can quickly reflect the absorption uniformity after the first drop of liquid, is used as the most important judgment index in the comprehensive absorption performance, and provides a perfect absorption uniformity judgment index through a comparison test.
The method can measure the capability of rapidly absorbing the adhesive in a short time, namely the absorption rate of the adhesive is measured, and the higher the absorption rate is, the better the performance is, and the higher the score is; subsequently, povidone iodine solution is continuously dripped into the same position, so that the absorption rate of each drop and the change rate (curve) of the absorption rate can be obtained, the more gradual the attenuation change rate is, the better the performance is, and the higher the score is; finally, the method can also be used for judging the maximum water absorption capacity, namely the absorption capacity of the paper, and the larger the water absorption capacity is, the better the performance is, and the higher the score is. Therefore, the invention comprehensively considers the absorption performance of the paper from multiple aspects of absorption uniformity, absorption rate and the like, wherein the absorption uniformity is the primary consideration, the weight of the absorption uniformity is 60-70%, the weight of the absorption rate is 15-25%, and the weight of the absorption rate is 8-10%.
In order to achieve the above object, according to one aspect of the present invention, there is provided a paper absorption performance testing method, comprising the steps of:
s1, preparing a reddish brown povidone iodine solution in advance, and weighing the paper to be detected with the initial weight;
s2, dropping a first povidone iodine solution on the paper to be detected which is arranged right below the titration tube through the control of a switch of the titration tube, and shooting an image of the apparent absorption and diffusion condition of the povidone iodine solution on the paper after a preset time interval for reflecting the absorption uniformity;
s3, after the liquid drop is completely absorbed, recording the absorption time for calculating the absorption rate;
s4, continuously dropwise adding povidone iodine solution at the same position, dropwise adding each drop after ensuring complete absorption until the drop cannot be completely absorbed, sucking away the residual solution on the surface, measuring the weight of the residual solution, and calculating the weight of the solution added to the paper in the whole process to reflect the absorption rate;
and S5, obtaining the absorption comprehensive performance of the paper according to the absorption uniformity, the absorption rate and the absorption rate.
In one preferred embodiment, the absorption uniformity is rated as follows:
in an image of the apparent absorption diffusion condition, the less black blocky areas which are not absorbed in time and appear in the round dyeing area, the more uniform and deep yellow blocks appear, and the higher the grade of the absorption uniformity is;
conversely, the more blocky areas that appear to have no timely absorption of black and the more uneven the dark yellow, the lower the absorption uniformity rating.
In one preferred embodiment, the absorption uniformity is weighted the highest among the absorption properties of the paper.
In one preferred embodiment, in the absorption comprehensive performance of the paper, the weight ratio sequence of the absorption uniformity, the absorption rate and the absorption rate is as follows:
absorption uniformity > absorption rate > absorption capacity.
In one preferred embodiment, in step S4, for each droplet that is completely absorbed by the following droplet, the absorption time is recorded separately according to step S3, and used to calculate the absorption rate separately.
In one preferred embodiment, the paper to be detected is taken from unprinted base paper.
In one preferred embodiment, the paper to be detected adopts a plurality of papers of different brands, and comparison tests are carried out together.
In one preferred embodiment, the orifice of the burette is suspended above the right center of the paper to be detected and vertically drips onto the paper to be detected, so that the liquid drops do not flow around to influence the observation.
In order to achieve the above object, according to another aspect of the present invention, there is provided a tester for implementing the method for testing paper absorption comprehensive properties, wherein:
comprises a workbench and a burette;
the burette filled with the povidone iodine solution is fixed on a workbench, the paper to be detected is placed below the burette, and the pipe orifice of the burette is away from the paper to be detected by a preset distance.
In order to achieve the purpose, the invention also provides application of the paper sheet absorption comprehensive performance test method in cigarette packet paper absorption performance test according to another aspect of the invention.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
1. the invention discloses a method for testing the comprehensive performance of paper absorption, which is a method for testing the absorption performance of paper of each brand on an adhesive in the processing production of cigarette packets.
2. According to the method for testing the comprehensive absorption performance of the paper, the reddish brown povidone-iodine solution is used for replacing the milky white water-based adhesive, the absorption influence on the paper is the same, the apparent absorption diffusion condition of the solution on the paper can be sensed more easily and visually, the absorption uniformity can be reflected quickly after the first drop of liquid drops, the povidone-iodine solution is used as the most important judgment index in the comprehensive absorption performance, and the perfect absorption uniformity judgment index is provided through a comparison test.
3. The method for testing the comprehensive absorption performance of the paper can test the capability of rapidly absorbing the adhesive in a short time, namely test the absorption rate of the paper, wherein the faster the absorption rate is, the better the performance is and the higher the score is; subsequently, povidone iodine solution is continuously dripped into the same position, so that the absorption rate of each drop and the change rate (curve) of the absorption rate can be obtained, the more gradual the attenuation change rate is, the better the performance is, and the higher the score is; finally, the method can also be used for judging the maximum water absorption capacity, namely the absorption capacity of the paper, and the larger the water absorption capacity is, the better the performance is, and the higher the score is.
4. Whether the condition that the paper absorbs the adhesive during processing is good or not can directly influence the hardness and softness of the paper, and then the printing adaptability is influenced. Generally speaking, the base paper which is easier to absorb the adhesive is softer, the printing adaptability is more excellent, and the base paper is more favorable for anti-knock ink. Therefore, whether the 'sizing' is easy or not is also used as an index for evaluating the anti-explosion ink performance of the base paper, and the printing adaptability of the paper is comprehensively considered in the aspects of folding resistance, water content and the like. Therefore, the invention comprehensively considers the absorption performance of the paper from multiple aspects of absorption uniformity, absorption rate and the like, wherein the absorption uniformity is the primary consideration, the weight of the absorption uniformity is 60-70%, the weight of the absorption rate is 15-25%, and the weight of the absorption rate is 8-10%.
5. The test method of the invention combines the conventional folding endurance tester, the marking press, the oven baking, the brighness absorbability tester and the like, and can be used for comprehensively considering the antiknock ink performance of various brands of paper.
Drawings
FIG. 1 is a schematic view of a tester for implementing the paper absorption comprehensive property testing method of the present invention;
fig. 2 is an image of the apparent absorption diffusion of povidone-iodine solution of example 1 of the present invention;
fig. 3 is an image of the apparent absorption diffusion of povidone-iodine solution of example 2 of the present invention;
fig. 4 is an image of the apparent absorption diffusion of povidone-iodine solution of example 3 of the present invention;
fig. 5 is an image of the apparent absorption diffusion of povidone-iodine solution of example 4 of the present invention;
fig. 6 is an image of the apparent absorption diffusion of povidone-iodine solution of example 5 of the present invention;
fig. 7 is an image of the apparent absorption diffusion of povidone-iodine solution of example 6 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to specific embodiments.
As shown in figure 1, the tester for realizing the paper absorption comprehensive performance testing method comprises a workbench 1 and a burette 2.
The burette 2 filled with the povidone iodine solution is fixed on a workbench 1, the paper 3 to be detected is placed below the burette 2, and the distance between the orifice of the burette and the paper 3 to be detected is 30 cm.
The invention provides a method for testing the comprehensive absorption performance of paper, which comprises the following steps:
s1, preparing a reddish brown povidone-iodine solution (replacing a milky water-based adhesive) with the effective iodine content of 4.5-5.5 g/L in advance, wherein the povidone-iodine solution is prepared from povidone iodine, potassium iodide, potassium iodate and purified water in proportion; the paper to be detected with the size of A4 and the initial weight of the paper to be detected can be the same brand or different brands, such as but not limited to paper of six brands including Bowang, Hongmai, Hongta, Jintaiyang, Junma and Asian pulp;
s2, the burette fixed on the workbench is filled with the povidone iodine solution, the first povidone iodine solution is vertically dripped to the paper to be detected with the size of A4 and the size of 30cm right below by the control of a burette switch, about 0.05mL is obtained, a stopwatch is rapidly started for timing, and after the interval is 10S, an image of the apparent absorption and diffusion condition of the povidone iodine solution on the paper is shot for reflecting the absorption uniformity;
s3, after the liquid drop is completely absorbed, recording the absorption time for calculating the absorption rate;
s4, continuously dropwise adding povidone iodine solution at the same position, dropwise adding each drop after ensuring complete absorption until the drop cannot be completely absorbed, absorbing residual solution on the surface by using absorbent paper, measuring the weight of the solution on an electronic balance, and calculating the weight of the solution increased by the paper in the whole process to reflect the absorption rate; repeating the above operation for other brands of paper, and performing three tests on each brand of paper;
and S5, obtaining the absorption comprehensive performance of the paper according to the absorption uniformity, the absorption rate and the absorption rate.
The povidone iodine solution is reddish brown, and has a clearer and more visual appearance compared with a milky adhesive.
The povidone iodine solution drops freely fall on the paper and automatically diffuse into a regular circular dyeing area, wherein the paper with good absorption presents a whole block of uniform deep yellow; poorly absorbed paper, presenting numerous black, blocky areas that are not absorbed in time.
Thus in one preferred embodiment, the absorption uniformity is rated as follows:
in an image of the apparent absorption diffusion condition, the less black blocky areas which are not absorbed in time and appear in the round dyeing area, the more uniform and deep yellow blocks appear, and the higher the grade of the absorption uniformity is; conversely, the more blocky areas that appear to have no timely absorption of black and the more uneven the dark yellow, the lower the absorption uniformity rating.
In one preferred embodiment, the absorption uniformity is weighted the highest among the absorption properties of the paper.
In one preferred embodiment, in the absorption comprehensive performance of the paper, the weight ratio sequence of the absorption uniformity, the absorption rate and the absorption rate is as follows:
absorption uniformity > absorption rate > absorption capacity.
In one preferred embodiment, the absorption rate is given a single score, the faster the absorption rate, the better the performance, and the higher the score.
In one preferred embodiment, the greater the water absorption capacity, the better the performance, and the higher the score in the individual scores of the absorption capacity.
In one preferred embodiment, in step S4, for each droplet that is completely absorbed, the absorption time is recorded according to step S3, and the absorption rate and the rate of change (curve) of the absorption rate are calculated, respectively, wherein the more gradual the attenuation rate, the better the performance, and the higher the score.
In one preferred embodiment, the paper to be detected is taken from unprinted base paper.
In one preferred embodiment, the paper to be detected adopts a plurality of papers of different brands, and three papers are prepared and are subjected to comparison test together. The physical indexes of the paper to be detected need to be unified, including dryness, cleanliness, size and the like, and the random error of the test is reduced. And comparing and judging the shot images according to different paper brands.
In one preferred embodiment, the orifice of the burette is suspended above the right center of the paper to be detected and vertically drips onto the paper to be detected, so that the liquid drops do not flow around to influence the observation. The selected burette needs to be as small as possible, and the number of liquid drops dropped each time is controlled not to be too large.
The povidone iodine solution is taken from the same bottle as far as possible to ensure that the concentration of the solution is the same in the whole process, the povidone iodine solution dripped on each piece of paper needs to be uniformly quantified, and the dripping height needs to be uniformly determined.
The 10s time interval needs to be strictly controlled, and shooting and recording are carried out in time, so that large errors caused by time are avoided.
Example 1
The method comprises the steps of coating Asian pulp of A4 size on a white cardboard, dripping a drop of 0.05mL povidone iodine solution at the height of 30cm, dropping the solution on the paper, starting timing, quickly shooting the apparent diffusion and absorption condition of the solution on the Asian pulp paper after 10-second time interval, continuously dripping the solution, sucking the solution by using absorbent paper after the solution cannot be completely absorbed, weighing the weight of the solution, calculating the weight increase before and after the weight increase, and repeating the operation on three portions of the white cardboard.
As shown in fig. 2, the combined results show that on asian pulp white cardboard, the droplets spread into a regular circle, the entire circular area is dark yellow, there are few black spots, and the absorbency is best among the six example papers, before and after the recording test.
Example 2
Dropping a drop of 0.05mL povidone iodine solution on a gold sun coated white cardboard with the size of A4 at the height of 30cm, timing when the solution falls on the paper, quickly shooting the apparent diffusion and absorption condition of the solution on the gold sun paper after 10-second time interval, continuously dropping the solution, sucking the solution by using absorbent paper after the solution cannot be completely absorbed, weighing the weight of the solution, calculating the weight increase before and after the weight increase, and repeating the operation on three portions of white cardboard.
As shown in fig. 3, the comprehensive results show that the liquid drops spread in a more regular circle on the golden sun white cardboard, the whole circle area is dark yellow, and a few black spots exist, which is slightly more than that of the asian pulp.
Example 3
A0.05 mL povidone iodine solution is dripped at a position of 30cm on a white cardboard coated by a red tower with the size of A4, the solution is dripped on the paper to start timing, the apparent diffusion absorption condition of the solution on the red tower paper is rapidly photographed after a time interval of 10 seconds, the solution is dripped continuously, after the solution cannot be completely absorbed, the solution is sucked by absorbent paper, the weight of the solution is weighed, the weight is calculated, the weight is added before and after the weight is added, and the operation is repeated on three white cardboard parts.
As shown in fig. 4, the comprehensive results show that the liquid drops spread in a regular circle on the red tower ivory board, and the whole circle area is dark yellow, wherein the black area with thick lines appears more than the golden sun.
Example 4
Dropping a drop of 0.05mL povidone iodine solution on a Baowang coated white cardboard with the size of A4 at the height of 30cm, starting timing when the solution falls on the paper, quickly shooting the apparent diffusion and absorption condition of the solution on the Baowang paper after 10-second time interval, continuously dropping the solution, sucking the solution by using absorbent paper after the solution cannot be completely absorbed, weighing the weight of the solution, calculating the weight increase before and after the weight increase, and repeating the operation on three portions of white cardboard.
As shown in fig. 5, the comprehensive results show that the liquid drops spread in a regular circle on the blasm white cardboard, and the whole circle area is black and yellow, wherein more black areas appear than red towers.
Example 5
Coating red plums with the size of A4 on a white cardboard, dripping a drop of 0.05mL povidone iodine solution at the height of 30cm, dropping the solution on the paper, starting timing, quickly shooting the apparent diffusion and absorption condition of the solution on the red plum paper after 10 seconds, continuously dripping the solution, sucking the solution by using absorbent paper after the solution cannot be completely absorbed, weighing the weight of the solution, calculating the weight increase before and after the weight increase, and repeating the operation on three white cardboards.
As shown in fig. 6, the comprehensive results show that the liquid drops spread in a more regular circle on the red plum white cardboard, and the whole circle area is black and yellow, wherein a plurality of black areas connected into blocks appear, which is more than Bowang.
Example 6
A drop of 0.05mL povidone iodine solution is dripped on a white cardboard coated with a courser with the size of A4 at the height of 30cm, the solution is dripped on the paper to start timing, the apparent diffusion and absorption condition of the solution on the courser paper is rapidly photographed after a time interval of 10 seconds, the solution is dripped continuously, after the solution cannot be completely absorbed, the solution is sucked by absorbent paper, the weight of the solution is weighed, the weight is calculated, the weight is added before and after the weight is added, and the operation is repeated on three portions of the white cardboard.
As shown in fig. 7, the combined results show that on a steed white cardboard, the liquid drops spread in a regular circle, alternating black and yellow throughout the circular area, with a larger number of black areas, more red plum.
The results of the comparative tests are shown in table 1 below.
| Base paper brand | Apparent effect | Weight gain | Absorption combination property | |
| Example 1 | Asian pulp | Dark yellow round with few black spots | Is larger | Optimization of |
| Example 2 | Golden sun | Dark yellow circle, few black dots | Is larger | Good effect |
| Example 3 | Red tower | Dark yellow circle, more black spot area | Is larger | In general |
| Example 4 | Bowang medicine | Black and yellow, most black spot areas | In general | Is poor |
| Example 5 | Hong Mei | Black and yellow are in the same phase, and a plurality of black block areas | In general | Difference (D) |
| Example 6 | Steed horse | Black-yellow interphase, extremely dark block-like region | In general | Worst case |
In summary, compared with the prior art, the scheme of the invention has the following significant advantages:
1. the invention discloses a method for testing the comprehensive performance of paper absorption, which is a method for testing the absorption performance of paper of each brand on an adhesive in the processing production of cigarette packets.
2. According to the method for testing the comprehensive absorption performance of the paper, the reddish brown povidone-iodine solution is used for replacing the milky white water-based adhesive, the absorption influence on the paper is the same, the apparent absorption diffusion condition of the solution on the paper can be sensed more easily and visually, the absorption uniformity can be reflected quickly after the first drop of liquid drops, the povidone-iodine solution is used as the most important judgment index in the comprehensive absorption performance, and the perfect absorption uniformity judgment index is provided through a comparison test.
3. The method for testing the comprehensive absorption performance of the paper can test the capability of rapidly absorbing the adhesive in a short time, namely test the absorption rate of the paper, wherein the faster the absorption rate is, the better the performance is and the higher the score is; subsequently, povidone iodine solution is continuously dripped into the same position, so that the absorption rate of each drop and the change rate (curve) of the absorption rate can be obtained, the more gradual the attenuation change rate is, the better the performance is, and the higher the score is; finally, the method can also be used for judging the maximum water absorption capacity, namely the absorption capacity of the paper, and the larger the water absorption capacity is, the better the performance is, and the higher the score is.
4. Whether the condition that the paper absorbs the adhesive during processing is good or not can directly influence the hardness and softness of the paper, and then the printing adaptability is influenced. Generally speaking, the base paper which is easier to absorb the adhesive is softer, the printing adaptability is more excellent, and the base paper is more favorable for anti-knock ink. Therefore, whether the 'sizing' is easy or not is also used as an index for evaluating the anti-explosion ink performance of the base paper, and the printing adaptability of the paper is comprehensively considered in the aspects of folding resistance, water content and the like. Therefore, the invention comprehensively considers the absorption performance of the paper from multiple aspects of absorption uniformity, absorption rate and the like, wherein the absorption uniformity is the primary consideration, the weight of the absorption uniformity is 60-70%, the weight of the absorption rate is 15-25%, and the weight of the absorption rate is 8-10%.
5. The test method of the invention combines the conventional folding endurance tester, the marking press, the oven baking, the brighness absorbability tester and the like, and can be used for comprehensively considering the antiknock ink performance of various brands of paper.
It will be appreciated that the embodiments of the system described above are merely illustrative, in that elements illustrated as separate components may or may not be physically separate, may be located in one place, or may be distributed over different network elements. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
In addition, it should be understood by those skilled in the art that in the specification of the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the description of the embodiments of the invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects.
However, the disclosed method should not be interpreted as reflecting an intention that: that is, the claimed embodiments of the invention require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of an embodiment of this invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and not to limit the same; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for testing the comprehensive performance of paper absorption is characterized by comprising the following steps:
s1, preparing a reddish brown povidone iodine solution in advance, and weighing the paper to be detected with the initial weight;
s2, dropping a first povidone iodine solution on the paper to be detected which is arranged right below the titration tube through the control of a switch of the titration tube, and shooting an image of the apparent absorption and diffusion condition of the povidone iodine solution on the paper after a preset time interval for reflecting the absorption uniformity;
s3, after the liquid drop is completely absorbed, recording the absorption time for calculating the absorption rate;
s4, continuously dropwise adding povidone iodine solution at the same position, dropwise adding each drop after ensuring complete absorption until the drop cannot be completely absorbed, sucking away the residual solution on the surface, measuring the weight of the residual solution, and calculating the weight of the solution added to the paper in the whole process to reflect the absorption rate;
and S5, obtaining the absorption comprehensive performance of the paper according to the absorption uniformity, the absorption rate and the absorption rate.
2. The method for testing the paper absorbency integrity as set forth in claim 1, wherein:
the absorption uniformity was rated as follows:
in an image of the apparent absorption diffusion condition, the less black blocky areas which are not absorbed in time and appear in the round dyeing area, the more uniform and deep yellow blocks appear, and the higher the grade of the absorption uniformity is;
conversely, the more blocky areas that appear to have no timely absorption of black and the more uneven the dark yellow, the lower the absorption uniformity rating.
3. The method for testing the paper absorbency integrity as set forth in claim 1, wherein:
among the absorption properties of paper, the weight ratio of absorption uniformity is highest.
4. The method for testing the paper absorbency combination as set forth in claim 3, wherein:
in the comprehensive absorption performance of the paper, the weight proportion sequence of absorption uniformity, absorption rate and absorption rate is as follows:
absorption uniformity > absorption rate > absorption capacity.
5. The method for testing the paper absorbency integrity as set forth in claim 1, wherein:
in step S4, for each droplet that is completely absorbed by the following droplet, the absorption time is recorded separately according to step S3 for calculating the absorption rate of the device separately.
6. The method for testing the paper absorbency integrity as set forth in claim 1, wherein:
the paper to be detected is taken from raw paper which is not subjected to printing processing.
7. The method for testing the paper absorbency integrity as set forth in claim 1, wherein:
the paper to be detected adopts a plurality of papers of different brands, and the papers are subjected to comparison test together.
8. The method for testing the paper absorbency integrity as set forth in claim 1, wherein:
the orifice of the burette is suspended above the center of the paper to be detected and vertically dripped onto the paper to be detected, so that the observation is not influenced by the flowing of liquid drops at four positions.
9. A tester for carrying out the paper absorption integrity test method as defined in any one of claims 1 to 8, characterized in that:
comprises a workbench (1) and a burette (2);
the burette (2) filled with the povidone iodine solution is fixed on the workbench (1), the paper (3) to be detected is placed below the burette (2), and the distance between the orifice of the burette and the paper (3) to be detected is a preset distance.
10. Use of the paper sheet absorption combination property test method according to any one of claims 1 to 8 in cigarette packet paper absorption property tests.
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