CN112067507A - Device and method for simulating film formation and wetting conditions of liquid on film surface - Google Patents
Device and method for simulating film formation and wetting conditions of liquid on film surface Download PDFInfo
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- CN112067507A CN112067507A CN202010833823.8A CN202010833823A CN112067507A CN 112067507 A CN112067507 A CN 112067507A CN 202010833823 A CN202010833823 A CN 202010833823A CN 112067507 A CN112067507 A CN 112067507A
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- 238000009736 wetting Methods 0.000 title claims abstract description 45
- 239000007788 liquid Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 25
- 238000005507 spraying Methods 0.000 claims abstract description 65
- 239000007921 spray Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000004088 simulation Methods 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 239000010408 film Substances 0.000 claims description 134
- 239000010409 thin film Substances 0.000 claims description 18
- 238000007689 inspection Methods 0.000 claims 1
- 239000003292 glue Substances 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 239000000126 substance Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 27
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 13
- 229910052710 silicon Inorganic materials 0.000 description 13
- 239000010703 silicon Substances 0.000 description 13
- 238000012360 testing method Methods 0.000 description 11
- 229920001296 polysiloxane Polymers 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000002390 adhesive tape Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- 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
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
- G01B11/306—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces for measuring evenness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Coating Apparatus (AREA)
Abstract
The invention belongs to the technical field of film detection, and particularly relates to a device and a method for simulating film formation and wetting conditions of liquid on the surface of a film. The device, comprising: and the spraying device is provided with a plurality of spraying nozzles which are used for spraying on the surface of the film. The simulation method comprises the following steps: 1) placing the film at a position 25-35 cm away from the spray nozzle; 2) starting a spraying device, wherein the spraying amount is 1000-1400 mL/h, and spraying for 20-40 seconds; and finishing the spraying to finish the simulation. According to the invention, the wetting and film forming conditions of the liquid substance on the surface of the film material are simulated in a mode of spraying on the surface of the film, so that the film forming uniformity of organic matters such as glue and the like on the surface of the film material can be evaluated to a certain extent, the appearance uniformity and the performance stability of the coated glue surface of the electronic tape are further ensured, and the production yield is improved.
Description
Technical Field
The invention belongs to the technical field of film detection, and particularly relates to a device and a method for simulating film formation and wetting conditions of liquid on the surface of a film.
Background
With the rapid development of the electronic field, electronic tapes play more and more important roles, and thin film materials as substrates are also receiving attention. In the process of manufacturing the electronic tape, in order to further improve the appearance and performance of the coated surface of the electronic tape, the performance requirements on the film substrate are higher and higher, especially the indexes of the surface flatness and the surface wetting uniformity of the film material. In the prior art, the detection of the surface flatness and the surface wetting uniformity of the thin film material still belongs to the laboratory detection level at the present stage, and an Atomic Force Microscope (AFM) and a thin film interference method are mainly adopted.
At present, a new, simple, convenient and visual detection method for evaluating the surface flatness and the surface wetting uniformity of a film material is urgently required to be developed in the field of electronic tape manufacturing, the microscopic morphology and the wetting performance of the surface of the film material are indirectly characterized, and the film forming uniformity of organic matters such as glue and the like on the surface of the film material is evaluated to a certain extent, so that the appearance uniformity and the performance stability of the coated surface of the electronic tape are ensured, and the production yield is improved.
Disclosure of Invention
The invention aims to provide a device and a method for simulating film formation and wetting conditions of liquid on the surface of a film, and aims to solve the technical problems that a film surface flatness and surface wetting uniformity detection method in the prior art is not simple, convenient and visual enough and is difficult to be widely applied to enterprise production.
In order to achieve the above object, an apparatus for simulating film formation and wetting of a liquid on a surface of a thin film according to an embodiment of the present invention includes:
a spraying device having a plurality of spray nozzles for spraying on the surface of the film.
Preferably, the device for simulating the film formation and wetting of the liquid on the surface of the film further comprises: and the photographing device is used for photographing the appearance picture after the film is sprayed.
Preferably, the distance between the spray nozzle and the film is 25-35 cm.
Preferably, the spraying amount of the spraying device is 1000-1400 mL/h.
Preferably, the spraying device is a humidifier.
One or more technical schemes in the device for simulating the film forming and wetting conditions of the liquid on the surface of the film provided by the embodiment of the invention at least have one of the following technical effects: when the device works, the spraying nozzle sprays on the surface of the thin film, and then the spraying film forming state on the thin film is observed; the wetting and film-forming conditions of liquid substances on the surface of the film material are simulated in a spraying mode on the surface of the film, the film-forming uniformity of organic matters such as glue and the like on the surface of the film material can be evaluated to a certain extent, the appearance uniformity and the performance stability of the coated glue surface of the electronic tape are further ensured, and the production yield is improved. The spraying device adopted by the device is common equipment, can simply, conveniently and visually represent the surface micro-morphology and the wettability of the film material, and is suitable for enterprise production.
In order to achieve the above object, an embodiment of the present invention further provides a method for simulating a film formation and wetting condition of a liquid on a surface of a film, including the following steps:
1) placing the film at a position which is 25-35 cm away from the spray nozzle;
2) starting a spraying device, wherein the spraying amount is 1000-1400 mL/h, and spraying for 20-40 seconds; and finishing the spraying to finish the simulation.
Preferably, the method for simulating the film formation and wetting condition of the film surface by the simulation liquid further comprises the following steps:
3) and shooting an appearance picture of the film after the film spraying is finished by using a shooting device to serve as a spraying picture.
Preferably, the spraying environment is at a temperature of 23-27 ℃ and a relative humidity of 52-57%.
Preferably, the material of the film is selected from any one of PET, BOPET, PVC, PE, PS, PP, PA or ABS.
One or more technical schemes in the simulation method for simulating the film forming and wetting conditions of the liquid on the surface of the film provided by the embodiment of the invention at least have one of the following technical effects: the simulation method is a simple and visual simulation method, can indirectly represent the film forming and wetting performance of the surface of the film material, and can reflect the film forming uniformity of organic matters such as glue and the like on the surface of the film to a certain extent, thereby ensuring the appearance uniformity and the performance stability of the coated glue surface of the electronic adhesive tape. When the simulation method is applied to production, the problems of overlarge winding tension, mesh roller blockage, guide roller pollution, overlarge static electricity and the like can be identified in time, the generation of defective products is avoided, and the production yield is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a flowchart of an apparatus for simulating a film formation and wetting condition of a liquid on a surface of a thin film according to an embodiment of the present invention.
Fig. 2a is a first photograph of a spray obtained in example 1 of the present invention.
FIG. 2b is a photograph of a first adhesive side obtained in comparative example 1 of the present invention.
Fig. 3a is a second photograph of a spray obtained in example 2 of the present invention.
FIG. 3b is a photograph of a second veneer obtained in comparative example 2 of the present invention.
Fig. 4a is a third photograph of a spray obtained in example 3 of the present invention.
FIG. 4b is a photograph of a third veneer obtained in comparative example 3 of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the invention.
In one embodiment of the present invention, as shown in fig. 1, an apparatus 100 for simulating film formation and wetting of a liquid on a film surface is provided, which includes a spraying device 110, wherein the spraying device 110 has a plurality of spraying nozzles 111, and the spraying nozzles 111 are used for spraying on the surface of the film 200. When the device works, the spray nozzle 111 sprays on the surface of the film, the wetting and film forming conditions of liquid substances on the surface of the film material are simulated in a mode of spraying on the surface of the film, the film forming uniformity of organic matters such as glue and the like on the surface of the film material can be evaluated to a certain extent, the appearance uniformity and the performance stability of the coated surface of the electronic adhesive tape are further ensured, and the production yield is improved. The spraying device 110 adopted by the device is common equipment, can simply, conveniently and visually represent the surface micro-morphology and the wettability of the film material, and is suitable for enterprise production.
In another embodiment of the present invention, the apparatus 100 for simulating the film formation and wetting of the liquid on the surface of the film further comprises a photographing device 120, wherein the photographing device 120 is used for taking a picture of the appearance of the sprayed film 200 for easy observation and comparison.
In some embodiments of the present invention, in order to enable the spray to better form the film on the thin film 200, the distance between the spray nozzle 111 and the thin film 200 of the apparatus 100 for simulating the film formation and wetting of the liquid on the surface of the thin film is 25-35 cm, and specifically may be 25cm, 28cm, 30cm, 32cm or 35 cm.
In some embodiments of the present invention, the spraying amount of the spraying device 110 of the device 100 for simulating the film formation and wetting condition of the liquid on the surface of the film is 1000 to 1400mL/h, and specifically may be 1000mL/h, 1100mL/h, 1200mL/h, 1300mL/h or 1400 mL/h. An excessively small amount of spray leads to failure to form a film for a long time. Too large an amount of spray results in poor liquid film effect, large droplets, and the like. Therefore, when the spraying amount is preferably 1000 to 1400mL/h, the film 200 can be formed by spraying more favorably.
In another embodiment of the present invention, the spraying device 110 of the device 100 for simulating the film formation and wetting of the liquid on the surface of the film is a humidifier. A humidifier is a common spray device in the prior art and is commercially available.
In some embodiments of the present invention, a simulation method for simulating film formation and wetting of a film surface by a liquid is provided, which includes the following steps:
1) placing the film 200 at a distance of 25-35 cm from the spray nozzle 111;
2) starting the spraying device 110, wherein the spraying amount is 1000-1400 mL/h, and spraying for 20-40 seconds; and finishing the spraying to finish the simulation.
The simulation method is a simple and visual simulation method, can indirectly represent the film forming and wetting performance of the surface of the film material, and can reflect the film forming uniformity of organic matters such as glue and the like on the surface of the film to a certain extent, thereby ensuring the appearance uniformity and the performance stability of the coated glue surface of the electronic adhesive tape. When the simulation method is applied to production, the problems of overlarge winding tension, mesh roller blockage, guide roller pollution, overlarge static electricity and the like can be identified in time, the generation of defective products is avoided, and the production yield is improved.
In another embodiment of the present invention, the method for simulating the film formation and wetting condition of the liquid on the surface of the film further comprises the following steps:
3) the appearance photograph of the film 200 after the spraying is finished is photographed by the photographing device 120 as a spraying picture. The obtained spray picture is more convenient to observe and compare.
In some embodiments of the present invention, in the simulation method for simulating the film formation and wetting condition of the liquid on the surface of the film, the spraying environment is 23-27 ℃ and the relative humidity is 52-57%. In the environment, a liquid film formed by spraying is not easy to evaporate, has stable property and is convenient to observe.
In some embodiments of the present invention, in the method for simulating the film formation and wetting condition of the liquid on the surface of the film, the material of the film 200 is selected from any one of PET, BOPET, PVC, PE, PS, PP, PA, and ABS.
In order to further understand the present invention, the following examples are provided to describe the simulation method for simulating the film formation and wetting condition of the liquid on the surface of the film, and the scope of the present invention is not limited by the following examples. Wherein, the films in example 1 and comparative example 1 are both the first silicone PET release film. The films in example 2 and comparative example 2 were both second silicone PET release films. The films in example 3 and comparative example 3 were both a third silicone PET release film. The thickness of the first organic silicon PET release film, the second organic silicon PET release film and the second organic silicon PET release film is 25 um. All examples and comparative examples were carried out at a temperature of 25 ℃ and a relative humidity of 55%.
Example 1
The method for simulating the film formation and wetting condition of the liquid on the surface of the film comprises the following steps:
1) placing the film at a distance of 30cm from the spray nozzle;
2) starting a spraying device, spraying for 30 seconds, wherein the spraying amount is 1200 mL/h; and finishing the spraying to finish the simulation.
3) The appearance photograph of the film after spraying was taken with a camera as the first spray photograph, fig. 2 a.
Example 2
The present embodiment is different from embodiment 1 in that: the film in this embodiment is a second silicone PET release film, and a second spray picture is obtained by shooting in step 3), that is, fig. 3 a.
The rest of this embodiment is the same as embodiment 1, and the features not explained in this embodiment are explained by embodiment 1, which is not described again here.
Example 3
The present embodiment is different from embodiment 1 in that: the film in this embodiment is a third silicone PET release film, and a third spray picture is obtained by shooting in step 3), that is, fig. 4 a.
The rest of this embodiment is the same as embodiment 1, and the features not explained in this embodiment are explained by embodiment 1, which is not described again here.
Comparative example 1
This comparative example provides a comparative test method for comparing spray images obtained by the simulation method of film formation and wetting on the surface of a film with the simulated liquid provided in example 1.
Specifically, the comparative testing method comprises the following steps:
a) coating an adhesive layer on the film in a scraper coating mode;
b) the film coated with the glue layer is cured by an oven and then is attached to the corona surface of the 12um organic silicon release film;
c) preparing a coating product with a three-layer structure of a thin film/adhesive layer/12 um organic silicon PET release film;
d) rewinding the coated product, removing the film to finally obtain the required electronic adhesive tape, and coating the adhesive surface to obtain a first adhesive surface photo, namely the photo shown in fig. 2 b.
Comparative example 2
The comparative example differs from comparative example 1 in that the film in the comparative example is a second silicone PET release film, as the film in example 2, and a second photo of the adhesive side is obtained after the test, i.e., fig. 3 b.
The rest of the comparative example is the same as that of comparative example 1, and the characteristics which are not explained in the comparative example are explained by using comparative example 1, and are not described again.
Comparative example 3
The comparative example differs from comparative example 1 in that the film in the comparative example is a third silicone PET release film, as the film in example 3, and a third adhesive side photograph is obtained after the test, i.e., fig. 4 b.
The rest of the comparative example is the same as that of comparative example 1, and the characteristics which are not explained in the comparative example are explained by using comparative example 1, and are not described again.
Example 4
In this embodiment, the first spray picture and the first glue surface picture, the second spray picture and the second glue surface picture, and the third spray picture and the third glue surface picture are compared, and the comparison results are shown in table 1.
TABLE 1
| Comparing picture names | Appearance description |
| First spray picture | Spraying evenly without obvious abnormality |
| First photo of glue surface | Spraying evenly without obvious abnormality |
| Second spray picture | The longitudinal arc-shaped continuous stripes are arranged at intervals in the transverse direction |
| Second photo with glue surface | The longitudinal arc-shaped continuous stripes are arranged at intervals in the transverse direction |
| Third spray picture | Longitudinal dotted vertical lines appear and are distributed at intervals in the transverse direction |
| Third photograph on the surface of the film | Longitudinal dotted vertical lines appear and are distributed at intervals in the transverse direction |
The comparison result shows that the appearance of the glue surface picture is basically consistent with that of the spray picture. The method for simulating the film formation and wetting condition of the liquid on the surface of the film provided by the embodiment reflects the film formation uniformity of organic matters such as glue and the like on the surface of the film to a certain extent.
Example 5
In the embodiment, the first, second and third silicone PET release films are subjected to a dry silicon amount test and a water drop angle test, and the comparison results are shown in table 2.
The dry silicon content testing method comprises the following steps:
under the test environment of 25 deg.C and 55% humidity, the release surface of the silicone PET release film is faced upwards, a round sample with a diameter of about 2cm is cut by a special cutter of a dry silicon instrument (model: HITACHI LAB-X5000), the round sample is placed in a sample chamber for testing for 1min, and the test result is directly read.
The water drop angle test method is as follows:
under the test environment of 25 ℃ and 55% humidity, a sample to be tested is fixed on a sample table of a water drop angle tester by a clamp, and a syringe filled with water is moved to the position right above the sample. And opening the test software to perform image pickup and liquid dropping, rotating the up-and-down adjusting rotor to enable the sample platform to move up slowly, and starting to move the sample platform down slowly after the sample contacts the liquid drops. And checking the image, selecting a proper graph for fitting (when the water drop angle is more than or equal to 20 degrees, selecting elliptical fitting, and when the water drop angle is less than 20 degrees, selecting circular fitting), and recording the water drop angle value.
TABLE 2
The comparison results show that the first organic silicon PET release film has uniform dry silicon amount and water drop angle, and the surface flatness and wetting uniformity are good and are uniform with the film surface spraying. The dry silicon amount of the second and third organic silicon PET release films is larger than that of the first organic silicon PET release film, and the water drop angle is uneven, which indicates that the surface flatness and wetting uniformity are poor, and the abnormal phenomena such as longitudinal arc continuous stripes, dot vertical stripes and the like are easy to appear in the aspect of film surface spraying test.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. An apparatus for simulating the film formation and wetting of a liquid on a film surface, comprising:
a spraying device having a plurality of spray nozzles for spraying on the surface of the film.
2. The apparatus for inspecting surface flatness and wetting uniformity of a thin film according to claim 1, further comprising: and the photographing device is used for photographing the appearance picture after the film is sprayed.
3. The apparatus for detecting the surface flatness and wetting uniformity of a thin film according to claim 1, wherein the distance between the spray nozzle and the thin film is 25-35 cm.
4. The device for detecting the surface flatness and the wetting uniformity of a thin film according to claim 1, wherein the spraying amount of the spraying device is 1000-1400 mL/h.
5. The device for detecting the surface flatness and the wetting uniformity of a thin film according to any one of claims 1 to 4, wherein the spraying device is a humidifier.
6. The simulation method for simulating the film forming and wetting condition of the liquid on the surface of the film is characterized by comprising the following steps of:
1) placing the film at a position which is 25-35 cm away from the spray nozzle;
2) starting a spraying device, wherein the spraying amount is 1000-1400 mL/h, and spraying for 20-40 seconds; and finishing the spraying to finish the simulation.
7. The inspection method for inspecting surface flatness and wetting uniformity of a thin film according to claim 6, further comprising the steps of:
3) and shooting an appearance picture of the film after the film spraying is finished by using a shooting device to serve as a spraying picture.
8. The detection method for detecting the surface flatness and the wetting uniformity of the thin film according to claim 6 or 7, wherein the spraying environment is at a temperature of 23-27 ℃ and a relative humidity of 52-57%.
9. The method as claimed in claim 6 or 7, wherein the film is made of any one material selected from PET, BOPET, PVC, PE, PS, PP, PA and ABS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010833823.8A CN112067507A (en) | 2020-08-18 | 2020-08-18 | Device and method for simulating film formation and wetting conditions of liquid on film surface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010833823.8A CN112067507A (en) | 2020-08-18 | 2020-08-18 | Device and method for simulating film formation and wetting conditions of liquid on film surface |
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| CN112067507A true CN112067507A (en) | 2020-12-11 |
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| CN202010833823.8A Pending CN112067507A (en) | 2020-08-18 | 2020-08-18 | Device and method for simulating film formation and wetting conditions of liquid on film surface |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0933422A (en) * | 1995-07-18 | 1997-02-07 | Toyota Motor Corp | Method for evaluating liquid repellent surface |
| CN103196799A (en) * | 2013-04-10 | 2013-07-10 | 国家电网公司 | RTV (Room Temperature Vulcanization silicone rubber) hydrophobicity testing device |
| CN210037533U (en) * | 2019-03-08 | 2020-02-07 | 广州碧然环保有限公司 | Device for testing liquid film forming property of hydrophilic coating |
-
2020
- 2020-08-18 CN CN202010833823.8A patent/CN112067507A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0933422A (en) * | 1995-07-18 | 1997-02-07 | Toyota Motor Corp | Method for evaluating liquid repellent surface |
| CN103196799A (en) * | 2013-04-10 | 2013-07-10 | 国家电网公司 | RTV (Room Temperature Vulcanization silicone rubber) hydrophobicity testing device |
| CN210037533U (en) * | 2019-03-08 | 2020-02-07 | 广州碧然环保有限公司 | Device for testing liquid film forming property of hydrophilic coating |
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