CN113686944B - Method and system for detecting corona treatment surface of film - Google Patents
Method and system for detecting corona treatment surface of film Download PDFInfo
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- CN113686944B CN113686944B CN202111010396.4A CN202111010396A CN113686944B CN 113686944 B CN113686944 B CN 113686944B CN 202111010396 A CN202111010396 A CN 202111010396A CN 113686944 B CN113686944 B CN 113686944B
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- 238000003851 corona treatment Methods 0.000 title abstract description 21
- 238000000034 method Methods 0.000 title abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 100
- 238000001514 detection method Methods 0.000 claims abstract description 35
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 3
- 229940103272 aluminum potassium sulfate Drugs 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 3
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- GRLPQNLYRHEGIJ-UHFFFAOYSA-J potassium aluminium sulfate Chemical compound [Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRLPQNLYRHEGIJ-UHFFFAOYSA-J 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 235000010216 calcium carbonate Nutrition 0.000 claims 1
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 235000017550 sodium carbonate Nutrition 0.000 claims 1
- 238000009826 distribution Methods 0.000 abstract description 16
- 230000005686 electrostatic field Effects 0.000 abstract description 5
- 239000010408 film Substances 0.000 description 83
- 230000007547 defect Effects 0.000 description 12
- 230000005611 electricity Effects 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
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- 239000000428 dust Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 2
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- 230000005484 gravity Effects 0.000 description 2
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- 238000006731 degradation reaction Methods 0.000 description 1
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- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
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- 239000007788 liquid Substances 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 229920006113 non-polar polymer Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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- 238000011179 visual inspection Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/60—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrostatic variables, e.g. electrographic flaw testing
- G01N27/61—Investigating the presence of flaws
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Coating Apparatus (AREA)
Abstract
The application discloses a detection method of a film corona treatment surface, which at least comprises the following steps: the powder is first released to the corona treated surface of the film, and then the uniformity of the corona treated surface of the film is judged based on the powder distribution image attached to the corona treated surface of the film. In addition, the application also discloses a detection system of the corona treatment surface of the film, which at least comprises a powder releasing device for releasing powder to the corona treatment surface of the film and a blanking basket arranged below the powder releasing device. According to the method, the powder is released to the surface of the film, a macroscopic powder distribution image can be formed on the surface of the whole film, the whole residual electrostatic field can be intuitively reacted, and whether the corona treatment surface of the film is uniform or not can be judged. The scheme of the application is simple and feasible and is convenient to operate, and whether the microstructure of the corona treatment surface of the film with a large area is uniform can be judged in a very short time.
Description
Technical Field
The application relates to the field of film production and detection, in particular to a method and a system for detecting a corona treatment surface of a film.
Background
In film post-processing, such as printing, release film processing, particularly release film processing with high technical, high quality requirements, corona treatment is often required. Corona treatment is an electrical shock treatment that imparts a higher adhesion to the surface of the substrate. Most plastic films (such as hydrocarbon films) are nonpolar polymers, and the known inks and adhesives with low surface tension cannot be firmly adhered on the surface, so that corona treatment is carried out on the surface to break chemical bonds of plastic molecules for degradation, and the surface roughness and the surface area are increased.
The corona treated film surface will produce a fine structural change, and it is generally desirable that the more uniform and better these fine structures of the film surface are. However, since the structure is too fine, if the detection is performed by microscopic means, only a local sampling means can be adopted, and macroscopic detection of a large area is difficult. The liquid coating method and the stroke testing method in the prior art cannot realize macroscopic detection on the surface of a large-area film, and the methods have the defects of higher operation difficulty, complex technical requirements and low detection efficiency.
Disclosure of Invention
The technical problem to be solved by the present application is to provide a method and a system for detecting corona treated surface of a film, so as to reduce or avoid the aforementioned problems.
In order to solve the technical problems, the application provides a detection method for a film corona treatment surface, which at least comprises the following steps: the powder is first released to the corona treated surface of the film, and then the uniformity of the corona treated surface of the film is judged based on the powder distribution image attached to the corona treated surface of the film.
Preferably, the powder is selected from one of calcium carbonate, magnesium sulfate, silica, sodium carbonate, sodium bicarbonate, aluminum sulfate, aluminum potassium sulfate, etc. having a particle size of-microns, or a mixture thereof.
Preferably, the film is conveyed obliquely upwards and the powder is released onto the film upstream of the direction of advance of the film.
In addition, the application also provides a detection system of the corona treatment surface of the film, which at least comprises a powder releasing device for releasing powder to the corona treatment surface of the film and a blanking basket arranged below the powder releasing device.
Preferably, the film is conveyed obliquely upward, and the powder releasing device is disposed upstream of the advancing direction of the film; a detection device is provided downstream of the advancing direction of the film.
Preferably, the powder discharge device includes an upper housing, a lower housing, and a rotary impeller provided inside the upper housing and the lower housing.
Preferably, a feed inlet is formed in the top of the upper shell; the bottom of the lower shell is provided with a discharge hole aligned with the lower discharge basket; the snap fit faces of the upper and lower housings are formed with powder release slits aligned with the film.
Preferably, an elastic adjusting plate is arranged in the powder releasing slit, one side of the elastic adjusting plate is fixedly connected in the powder releasing slit, and the other side of the elastic adjusting plate abuts against the side face of the powder releasing slit through an adjusting bolt to adjust the opening angle of the elastic adjusting plate.
Preferably, a blanking roller positioned at the upper end of the discharge hole is arranged in the lower shell, and the vertical projection surface of the blanking roller is larger than or equal to the cross section of the discharge hole.
Preferably, the blanking roller may be movable up and down in a vertical direction.
According to the method, the powder is released to the surface of the film, a macroscopic powder distribution image can be formed on the surface of the whole film, the whole residual electrostatic field can be intuitively reacted, and whether the corona treatment surface of the film is uniform or not can be judged. The scheme of the application is simple and feasible and is convenient to operate, and whether the microstructure of the corona treatment surface of the film with a large area is uniform can be judged in a very short time.
Drawings
The following drawings are only for purposes of illustration and explanation of the present application and are not intended to limit the scope of the present application.
In which fig. 1 shows a schematic structural diagram of a detection system for a corona treated surface of a film according to one embodiment of the present application.
Figures 2a-2b show the powder distribution image after the film corona treated surface has powder attached, respectively.
Fig. 3 shows an exploded perspective view of the powder discharge device and the blanking basket of fig. 1.
Fig. 4 shows an exploded perspective view of a powder releasing device according to an embodiment of the present application.
Fig. 5 shows a schematic cross-sectional view of a powder releasing device according to another embodiment of the present application.
Fig. 6 is a schematic perspective view showing a lower case of a powder releasing device according to still another embodiment of the present application.
Fig. 7 is a schematic side view showing a structure of a lower case of a powder releasing device according to still another embodiment of the present application.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present application, a specific embodiment of the present application will be described with reference to the accompanying drawings. Wherein like parts are designated by like reference numerals.
As described in the background art, the prior art lacks a technology for macroscopic detection of corona microstructure on a large-area film surface, so the application proposes a detection method which is simple and easy to implement and convenient to operate, and can judge whether the microstructure of the corona-treated surface of the large-area film is uniform in a very short time.
FIG. 1 is a schematic diagram of a film corona treated surface detection system according to one embodiment of the present application, as shown, and may include the following steps in overview: the powder is first released to the corona treated surface (illustrated as the upper surface) of the film 100, and then the uniformity of the corona treated surface of the film 100 is judged from the powder distribution image attached to the corona treated surface of the film 100.
The basic working principle of the application is as follows: the corona treatment applies high-frequency high-voltage electricity to the film surface, so that strong static electricity can be generated on the film surface, if the structure of the film surface is uniform, the electrostatic field on the film surface can be kept uniform, otherwise, uneven static electricity residues are generated at the place of uneven structure of the film surface, and the uneven static electricity residues often cause subsequent processing defects, such as uneven coating release agent and the like. According to this principle, when we release powder to the corona treated surface of the film, the powder is affected by static electricity, and the powder adheres to the film surface and forms a distribution image capable of reacting with the residual electrostatic field form, so that it can be judged whether the corona treated surface of the film is uniform.
Fig. 2a-2b show the powder distribution image of the film after the powder has been attached to the corona treated surface, respectively, as is evident from the figures, the powder distribution image of fig. 2a is relatively messy and less uniform, whereas the powder distribution image of fig. 2b is relatively uniform over a substantial area, and thus it can be seen intuitively that the corona treated surface of fig. 2a is less uniform and the corona treated surface of fig. 2b is relatively more uniform.
In the structure shown in fig. 1, the detection system for corona treated surface of film of the present application includes at least one powder discharge device 200 for discharging powder to the corona treated surface of film 100 and a blanking basket 300 disposed below powder discharge device 200. In the illustrated embodiment, where the film 100 is fed obliquely upward around the surface of the feed roller 400, the powder discharge device 200 discharges powder upstream of the advancing direction of the film 100, a distinguishable powder distribution image is formed downstream of the advancing direction of the film 100. The film 100 is transported obliquely upwards, so that the excessive released powder can naturally slide down into the blanking basket 300 by virtue of the gravity of the excessive released powder, and the phenomenon that the excessive powder accumulated in an unnatural way forms image interference is avoided; if the film 100 is transported vertically upward, there is a fear that the residual electrostatic force is not strong enough to fully adsorb the powder on the surface of the film against the gravity of the powder, and the slope of the transport of the film obliquely upward is preferably 30-70 degrees. The upstream and downstream are described herein with respect to the advancing direction of the film, and are independent of the vertical positional relationship of the illustrated structure.
As described above, the method for detecting the corona-treated surface of the film is quite visual, and the released powder can be spread on the whole film surface, so that a macroscopic powder distribution image can be formed on the whole film surface, and a person skilled in the art can judge the uniformity of the corona-treated surface by naked eye observation.
Of course, for large-scale industrial production, the uniformity is judged by naked eye observation, which is obviously not very stable, on one hand, the method is too hard, the leakage is easy to generate, on the other hand, the interference of human factors is also very large, and the accuracy is not high. Therefore, in the embodiment shown in fig. 1, the detecting device 500 may be provided downstream in the advancing direction of the film 100, and the powder distribution image may be subjected to operations such as identification judgment by the detecting device 500.
That is, the present application can determine the uniformity of the corona treated surface of the film by visual inspection after releasing the powder to form a powder distribution image, or can detect it by any of the existing detection devices.
For example, in the prior art document CN 206740668U published by the applicant, an online detection device for defects of thin films is disclosed, which can be used for online detection of defects of thin films. Thus, the detection apparatus 500 of the detection system for film corona treated surfaces of the present application may also employ similar detection apparatus of this prior art, which is incorporated herein by reference as part of the examples of the present application, and other similar embodiments may be obtained by rational derivation by those skilled in the art, as well, in view of this prior art disclosure.
The following description of the on-line detection device for defects in thin films, according to prior art CN 206740668U, illustrates the structure of a specific embodiment of the detection device 500 of the present application, however, those skilled in the art can also obtain the more specific structure, function and principle of the detection device 500 by reading the foregoing description of the prior art, and can also retrieve other similar detection devices, or derive other similar detection techniques according to the description of the present application and the prior art.
In one embodiment, as shown, the detection apparatus 500 that may be employed in the present application includes a light source assembly 1 disposed below a film 100, an image acquisition assembly 2 disposed above the film 100 and directly facing the light source assembly 1, and a back end server 3 connected to the image acquisition assembly 2. The basic working principle of the detection device 500 is: first, the film 100 is transmitted by light emitted from the light source assembly 1, and then the film 100 is photographed by the image pickup assembly 2 above the film 100. The photos obtained by the image acquisition component 2 are transmitted to the back-end server 3 on line in real time through a circuit, and the shooting moment of each photo is also transmitted to the back-end server 3. The stock roll 400 is provided with a meter (not shown) for measuring the length of the film 100, and the meter is operated in synchronization with the stock roll 400, and the value of the meter at the time of photographing is also transmitted to the back-end server 3. After the photo is transmitted to the back-end server 3, the photo is identified by the identification software running on the back-end server 3, if the image is uniform, the displayed image approximates to a solid-color image, if uneven places exist, irregular spots exist, the size of the spots is identified by the identification software, for example, if the diameter of the spots is larger than a preset value, defects are determined, the photo is automatically marked by the software, the shooting time and the size of the defects are recorded, and the longitudinal and transverse coordinates of the defects on the film 100 are determined by the shooting time, the corresponding meter and the position calculation of the high-speed camera of the image acquisition assembly 2, and the defects are positioned and recorded. If a large or regular defect is encountered, the production process, raw materials, equipment and the like are likely to be faulty, an alarm can be set through software, and the equipment can be turned off in an emergency after the defect photo is verified manually, so that the continuous loss caused by the generation of a large amount of waste products is avoided. Finally, each batch, roll of film product, having a number of defects verified, can be rated for classification based on market consumption.
Further, to make the powder distribution image easier to record and recognize, the powder used in the present application may preferably be made of a material that is more easily electrostatically adsorbed, preferably a nanopowder that is white in color and relatively less dense under white light irradiation. For example, one of calcium carbonate, magnesium sulfate, silica, sodium carbonate, sodium bicarbonate, aluminum sulfate, aluminum potassium sulfate, etc. having a particle size of 0.1 to 200 μm or a mixture thereof may be employed. The powder attached to the film surface may remain as an anti-blocking component or may be removed by wiping or water washing by a subsequent means.
Specific embodiments of the detection system for corona treated surfaces of films of the present application are further described below with reference to fig. 3-7. Wherein fig. 3 shows an exploded perspective view of the powder discharge device and the blanking basket of fig. 1; FIG. 4 shows an exploded perspective view of a powder delivery device according to one embodiment of the present application; FIG. 5 shows a schematic cross-sectional view of a powder delivery device according to another embodiment of the present application; FIG. 6 is a schematic perspective view showing a lower case of a powder releasing device according to still another embodiment of the present application; fig. 7 is a schematic side view showing a structure of a lower case of a powder releasing device according to still another embodiment of the present application.
As described above, the film corona treatment surface detection system of the present application includes at least one powder discharge device 200 for discharging powder to the corona treatment surface of the film 100 and a blanking basket 300 disposed below the powder discharge device 200.
In the illustrated embodiment, the blanking basket 300 is a rectangular box with an open top, semicircular notches 301 matching with the surface of the material roller 400 are formed on two sides of the blanking basket 300, and notches 302 corresponding to the width and height of the film 100 are formed on the side of the blanking basket 300 facing the film 100. The purpose of the present application is to limit the powder to the area of the blanking basket 300 as much as possible, and to avoid damage to the health of the operator due to dust diffusion. In addition, in order to facilitate the movement and positioning installation, a lifting roller (not shown) may be provided at the bottom of the lower basket 300, and after the lower basket 300 is filled with the material, the height of the lower basket 300 may be lowered, and the lower basket 300 may be removed from below the material roll 400.
The powder discharge device 200 is a long bar-shaped column matched with the width of the film 100, and since the structure is a thin-walled long bar-shaped structure, the surface is provided with a plurality of reinforcing ribs for improving the strength, as shown in the figure. The powder discharge device 200 includes an upper case 201, a lower case 202, and a rotating impeller 203 provided inside the upper case 201 and the lower case 202. In one embodiment, the top of the upper housing 201 is provided with a feed inlet 2011; the bottom of the lower shell 202 is provided with a discharge hole 2021 aligned with the lower discharge basket 300; the fastening surfaces of the upper case 201 and the lower case 202 are formed with powder discharge slits 2012 aligned with the film 100, and the width of the powder discharge slits 2012 is preferably larger than the width of the film 100.
Powder is fed into the powder discharge device 200 from the feed port 2011 of the upper case 201 through a feeding device (not shown in the drawing, for example, a feeding pipe or the like), and the rotating impeller 203 is rotated at a high speed by an external driving mechanism (not shown in the drawing, for example, a motor-driven belt or the like), and a rotating air flow is formed in the powder discharge device 200, whereby fine powder is agitated, and discharged from the powder discharge slit 2012 to the surface of the film 100 with the air flow. For clarity of illustration and ease of understanding, the structures of the conveyor pipes, motors, belts, etc. illustrated in brackets are omitted from the figures, and other structures of the small bearings, etc. are not shown in the figures, and those skilled in the art will readily understand based on common knowledge that the structures of the present application may have these conventional components.
It should be noted that when the rotating impeller 203 rotates at high speed, the powder inside will be released in any outlet direction. Therefore, the inlet 2011 preferably only has an opening in sealing connection with the conveyor, and the rest is preferably sealed so that no dust can diffuse from the inlet 2011 to the working environment. In addition, it is also necessary to pay attention to that the powder is impacted into the powder in the discharging basket 300 from the discharging hole 2021 by the air flow, resulting in dust diffusion. Therefore, the size of the outlet 2021 is controlled, and the end of the outlet 2021 is extended to a position near the bottom inside the blanking basket 300 as much as possible.
In yet another embodiment of the present application, a blanking roller 2025 is disposed in the lower housing 202 and located at the upper end of the outlet 2021, where the vertical projection surface of the blanking roller 2025 is greater than or equal to the cross section of the outlet 2021, as shown in the figure. The blanking roller 2025 is provided to seal the upper end of the discharge port 2021, so that the powder inside is prevented from falling into the blanking basket 300 in a short time, and thus it is necessary to continuously input the powder from the feed port 2011. The blanking roller 2025 may be made of a lightweight material, such as foam-coated rubber or plastic or sheet metal, so long as the upper end of the outlet 2021 is substantially sealed, and the lightweight material is convenient for its installation inside the lower housing 202.
Of course, if the powder inside the powder discharge device 200 is too much due to improper operation, the powder discharge slit 2012 may be blocked, and thus, in one embodiment of the present application, the blanking roller 2025 may be moved up and down in the vertical direction. Specifically, referring to fig. 6 and 7, a long hole 2026 is formed on each side of the lower housing 202, a rotating shaft 2027 connected to the blanking roller 2025 is inserted into the long hole 2026, and the blanking roller 2025 is lifted by lifting the rotating shaft 2027 along the long hole 2026, so that the upper end of the discharge hole 2021 blocked by the blanking roller 2025 is opened, and the excessive powder can slide into the blanking basket 300 from the exposed gap.
Further, in order to control the release amount of the powder, in a specific embodiment of the present application, an elastic adjusting plate 2023 is disposed inside the powder release slit 2012, one side of the elastic adjusting plate 2023 is fixedly connected inside the powder release slit 2012, and the other side is abutted against the side thereof by an adjusting bolt 2024 to adjust the opening angle thereof, as shown in fig. 5 and 7. The larger the upward lifting angle of the elastic regulating plate 2023 is, the smaller the shrinkage formed at the end thereof is, and the amount of powder that can be released decreases, whereas the smaller the lifting angle of the elastic regulating plate 2023 is, the amount of powder that can be released increases. In the illustrated embodiment, the resilient adjustment plate 2023 is secured to the lower housing 202 by rivets. Of course, in another embodiment not shown, the elastic adjustment plate 2023 may also be fixed to the upper case 201 by a rivet.
In summary, according to the method, the powder is released to the surface of the film, so that a macroscopic powder distribution image can be formed on the whole surface of the film, the whole residual electrostatic field can be intuitively reflected, and whether the corona treatment surface of the film is uniform or not can be judged. The scheme of the application is simple and feasible and is convenient to operate, and whether the microstructure of the corona treatment surface of the film with a large area is uniform can be judged in a very short time.
It should be understood by those skilled in the art that although the present application is described in terms of several embodiments, not every embodiment contains only one independent technical solution. The description is given for clearness of understanding only, and those skilled in the art will understand the description as a whole and will recognize that the technical solutions described in the various embodiments may be combined with one another to understand the scope of the present application.
The foregoing is illustrative of the present application and is not to be construed as limiting the scope of the present application. Any equivalent alterations, modifications and combinations thereof will be effected by those skilled in the art without departing from the spirit and principles of this application, and it is intended to be within the scope of this application.
Claims (4)
1. A detection system for corona treated surfaces of a film, comprising at least one powder releasing device (200) for releasing powder to the corona treated surface of the film (100) and a blanking basket (300) arranged below the powder releasing device (200); the film (100) is conveyed obliquely upwards, and a powder releasing device (200) is arranged at the upstream of the advancing direction of the film (100); a detection device (500) is arranged downstream of the film (100) in the advancing direction; the powder discharge device (200) comprises an upper housing (201), a lower housing (202), and a rotary impeller (203) disposed inside the upper housing (201) and the lower housing (202); a feed inlet (2011) is formed in the top of the upper shell (201); a discharge hole (2021) aligned with the lower discharge basket (300) is formed in the bottom of the lower shell (202); the buckling surfaces of the upper shell (201) and the lower shell (202) are provided with powder release slits (2012) aligned with the film (100); the powder is selected from one of calcium carbonate, magnesium sulfate, silicon dioxide, sodium carbonate, sodium bicarbonate, aluminum sulfate, aluminum potassium sulfate or their mixture with particle size of 0.1-200 μm.
2. The detection system according to claim 1, characterized in that an elastic adjusting plate (2023) is provided inside the powder releasing slit (2012), one side of the elastic adjusting plate (2023) is fixedly connected inside the powder releasing slit (2012), and the other side is abutted against the side thereof by an adjusting bolt (2024) to adjust the opening angle thereof.
3. The detection system according to claim 2, wherein a blanking roller (2025) is disposed in the lower housing (202) and is located at an upper end of the outlet (2021), and a vertical projection surface of the blanking roller (2025) is greater than or equal to a cross section of the outlet (2021).
4. A detection system according to claim 3, characterized in that the blanking roller (2025) is movable vertically up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111010396.4A CN113686944B (en) | 2021-08-31 | 2021-08-31 | Method and system for detecting corona treatment surface of film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111010396.4A CN113686944B (en) | 2021-08-31 | 2021-08-31 | Method and system for detecting corona treatment surface of film |
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| Publication Number | Publication Date |
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| CN113686944A CN113686944A (en) | 2021-11-23 |
| CN113686944B true CN113686944B (en) | 2024-03-12 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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