Corona processing device and sheet processing equipment

Abstract

The utility model discloses a corona treatment device and sheet treatment equipment. The corona treatment device comprises a protective cover; the gas dispersing part is arranged on the protective cover, the gas dispersing part and the protective cover are matched to define a gas cavity, and the gas dispersing part is provided with a gas outlet hole communicated with the gas cavity; and the ceramic electrode is located on the side, away from the gas cavity, of the gas dispersing part, and gas in the gas cavity is output to the ceramic electrode through the gas outlet holes so as to be ionized by the ceramic electrode and then conduct corona treatment on the sheet near the ceramic electrode. The plasma impact strength and the chemical polarization effect can be improved at the same time, then the corona effect of the sheet is improved, and the use risk and energy consumption of the corona treatment device cannot be increased.

Description

Technical Field

[0001] The present application relates to the field of corona treatment technology, and in particular to a corona treatment device and sheet material processing equipment. Background Art

[0002] Corona treatment device is commonly known as corona machine, electronic impact machine, and electric spark machine in the packaging industry. It is academically called dielectric barrier discharge. It is mainly used for surface treatment of plastic film or plastic sheet products. Before the above materials are subjected to ink printing, lamination, film blowing, coating, gluing, material modification, grafting, polymerization, coating, casting, and pasting processing, in order to make the surface of the product have stronger adhesion (that is, higher dyne coefficient) and prevent the raw materials from having printing color loss, loose lamination, uneven coating, etc. during the production process, which affects the product quality, corona impact treatment must be carried out first.

[0003] Existing corona treatment machines generally include: corona rollers, ceramic electrodes, protective covers, and mounting brackets for mounting the ceramic electrodes in the protective covers, wherein a channel is formed between the corona roller and the ceramic electrodes for plastic or metal sheets to pass through, and the ceramic electrodes use a method of directly ionizing air to perform surface treatment on the plastic or metal sheets passing through the channel. On the one hand, the plasma generated by the discharge of the ceramic electrodes bombards the surface of the plastic or metal sheet, which can increase the surface roughness of the plastic or metal sheet. On the other hand, during the ionization process, the oxygen in the air turns into ozone under the discharge conditions. Ozone, as a strong oxidant, can oxidize the surface impurity molecules of the plastic or metal sheet and increase the surface polarity. However, since the composition of the air components is basically fixed, increasing the power supply power can only significantly increase the plasma impact intensity, but the chemical polarization effect is not significantly improved. There are problems such as process adjustment space and weak scalability. In addition, increasing the power supply power will also increase the use risk and energy consumption of the corona treatment device. Utility Model Content

[0004] The utility model aims to provide a corona treatment device and sheet material treatment equipment to solve the technical problem that the existing corona treatment device adopts the method of ionizing air, which leads to poor ionization effect of plastic or metal sheets.

[0005] In order to achieve the above object, the utility model provides a corona treatment device, comprising:

[0006] Protective cover;

[0007] A gas dispersion member is disposed on the protective cover, and the gas dispersion member and the protective cover cooperate to enclose a gas cavity, and the gas dispersion member is provided with a gas outlet hole connected to the gas cavity; and

[0008] The ceramic electrode is located at a side of the gas dispersion member away from the gas cavity. The gas in the gas cavity is output to the ceramic electrode through the gas outlet hole, so as to perform corona treatment on the sheet material near the ceramic electrode after being ionized by the ceramic electrode.

[0009] Furthermore, there are a plurality of gas outlet holes, and the gas outlet holes are distributed at intervals on the gas dispersion component.

[0010] Furthermore, the corona treatment device has a first direction and a second direction intersecting each other; the corona treatment device further comprises:

[0011] a corona roller, located on a side of the ceramic electrode away from the gas chamber, and the corona roller and the ceramic electrode are spaced apart from each other, so that a sheet material channel is formed between the corona roller and the ceramic electrode, and the corona roller is used to drive the sheet material through the sheet material channel; the first direction is parallel to the axial direction of the corona roller;

[0012] The gas dispersion component includes a first dispersion portion and a second dispersion portion, the second dispersion portion is located on both sides of the first dispersion portion in the second direction, and the total flow area of ​​the gas outlet holes of the first dispersion portion is greater than the total flow area of ​​the gas outlet holes of the second dispersion portion.

[0013] Furthermore, the diameter of the air outlet holes of the first dispersing portion is larger than the diameter of the air outlet holes of the second dispersing portion.

[0014] Furthermore, the distribution density of the air outlet holes of the first dispersing portion is greater than the distribution density of the air outlet holes of the second dispersing portion.

[0015] Furthermore, the corona treatment device also includes:

[0016] An air intake assembly is arranged on the protective cover, and the air intake assembly is used to introduce gas into the gas cavity.

[0017] Furthermore, the air intake assembly includes a first air intake member and a second air intake member, the first air intake member is used to introduce a first gas, the second air intake member is used to introduce a second gas, and the first gas and the second gas are mixed in the gas cavity and then output through the gas outlet.

[0018] Furthermore, the distance between the ceramic electrode and the gas dispersion element is W cm, satisfying: 1≤W≤10.

[0019] In order to achieve the above object, the utility model also provides a sheet material processing device, comprising:

[0020] Unwinding device;

[0021] The corona treatment device as described above is arranged downstream of the unwinding device;

[0022] a coating device disposed downstream of the corona treatment device; and

[0023] The winding device is arranged downstream of the coating device.

[0024] Furthermore, the sheet material processing equipment further comprises:

[0025] An exhaust gas recovery device connected to the corona treatment device;

[0026] A first correcting device, disposed downstream of the unwinding device and upstream of the corona treatment device;

[0027] A drying device, disposed downstream of the coating device and upstream of the winding device;

[0028] The second correcting device is arranged downstream of the drying device and upstream of the winding device.

[0029] The technical effect of the utility model is to provide a corona treatment device and sheet material processing equipment, the corona device comprises a protective cover, a gas dispersion member and a ceramic electrode, the gas dispersion member is arranged in the protective cover, and the gas dispersion member and the protective cover surround a gas cavity, the gas in the gas cavity is output to the ceramic electrode through the gas outlet of the gas dispersion member, so that the sheet material near the ceramic electrode is subjected to corona treatment after ionization by the ceramic electrode, which can simultaneously improve the plasma impact strength and the chemical polarization effect, thereby improving the corona effect of the sheet material, and will not increase the use risk and energy consumption of the corona treatment device.

[0030] Furthermore, the corona treatment device is applied to sheet material processing equipment, and can perform corona treatment on various sheets. The overall structural design of the sheet material processing equipment is reasonable, the structure is simple, it is easy to assemble and manufacture, the layout is compact, it does not occupy space, and it can meet different production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0032] Figure 1 This is a schematic diagram of the structure of the corona treatment device provided in an embodiment of the present application.

[0033] Figure 2 This is an exploded view of the corona treatment device provided in an embodiment of the present application.

[0034] Figure 3 for Figure 1 Front view of the corona treatment apparatus.

[0035] Figure 4 for Figure 3 Cross-sectional view along the AA direction.

[0036] Figure 5 for Figure 1 Side view of the corona treatment apparatus.

[0037] Figure 6 for Figure 5 Cross section in the BB direction Figure 1 , which mainly reflects that the pores are evenly distributed in the gas dispersion component.

[0038] Figure 7 for Figure 5 Cross section in the BB direction Figure 2 , which mainly reflects that the aperture of the air outlet holes of the first dispersing part is larger than the aperture of the air outlet holes of the second dispersing part.

[0039] Figure 8 for Figure 5 Cross section in the BB direction Figure 3 , which mainly reflects that the distribution density of the air outlet holes in the first dispersed part is greater than the distribution density of the air outlet holes in the second dispersed part.

[0040] Fig. 9 A schematic diagram of the structure of a sheet material processing device provided in an embodiment of the present application.

[0041] The components of the attached drawings are identified as follows:

[0042] 1-protective cover; 11-plate body; 12-first side plate; 13-second side plate; 131-first air inlet; 132-second air inlet;

[0043] 100-gas cavity;

[0044] 2-gas dispersion member; 21-gas outlet; 211-first dispersion part, 212-second dispersion part;

[0045] 3- Ceramic electrode;

[0046] 4-air intake assembly; 41-first air intake member; 42-second air intake member;

[0047] 5-Corona roller;

[0048] 10-corona treatment device; 20-waste gas recovery device; 30-unwinding device; 40-first correcting device; 50-coating device; 60-drying device; 70-second correcting device; 80-winding device; 90-sheet material;

[0049] X-first direction; Y-second direction;

[0050] 200-sheet channel. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0052] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0054] To solve the technical problem that the existing corona treatment device adopts the method of ionizing air, which leads to poor ionization effect of plastic or metal sheets. One embodiment of the present application provides a corona treatment device, which includes a protective cover, a gas dispersion member and a ceramic electrode. The gas dispersion member is arranged in the protective cover, and the gas dispersion member and the protective cover surround a gas cavity. The gas in the gas cavity is output to the ceramic electrode through the gas outlet of the gas dispersion member, so that the sheet near the ceramic electrode is ionized by the ceramic electrode and corona treatment is performed. It can simultaneously improve the plasma impact strength and chemical polarization effect, thereby improving the corona effect of the sheet, and will not increase the risk of use and energy consumption. It is explained in detail below.

[0055] like Figures 1 to 4 As shown, Figure 1 This is a schematic structural diagram of a corona treatment device 10 provided in an embodiment of the present application. Figure 2 An exploded view of a corona treatment device 10 provided in an embodiment of the present application. Figure 3 for Figure 1 A front view of the corona treatment device 10 . Figure 4 for Figure 3 Cross-sectional view along the AA direction.

[0056] In one embodiment, the protective cover 1 of the corona treatment device 10 includes a plate body 11, a first side plate 12 and a second side plate 13, and the corona treatment device 10 has an intersecting first direction X and a second direction Y. The plate body 11 is provided with the first side plate 12 on both sides of the first direction X, and the plate body 11 is provided with the second side plate 13 on both sides of the second direction Y. The plate body 11, the first side plate 12 and the second side plate 13 cooperate with each other to enclose a cavity.

[0057] like Figures 4 to 6 As shown, Figure 5 for Figure 1 A side view of a corona treatment apparatus 10 . Figure 6 for Figure 5 Cross section in the BB direction Figure 1 , which mainly reflects that the pores 21 are evenly distributed in the gas dispersion element 2.

[0058] In one embodiment, the gas dispersion member 2 of the corona treatment device 10 is disposed in the protective cover 1, and the gas dispersion member 2 and the protective cover 1 cooperate to enclose a gas cavity 100, and a gas outlet 21 connected to the gas cavity 100 is provided on the gas dispersion member 2. The number of the gas outlet 21 can be multiple, and each gas outlet 21 is distributed at intervals on the gas dispersion member 2. Figure 6 The gas outlet holes 21 are evenly distributed on the gas dispersion member 2, so that the gas flow rate passing through any position of the gas dispersion member 2 is the same, so that the ionized gas has the same ionization effect on each position of the sheet 90. In other embodiments, the number of the gas outlet holes 21 can be one or two, so that the ionized gas can only act on a specific position of the sheet 90, so as to meet the special processing requirements of the special sheet 90.

[0059] It should be noted that the “sheet 90 ” mentioned above and below may be a plastic sheet 90 or a metal sheet, such as aluminum foil, copper foil, etc., and is not particularly limited here.

[0060] Further, the aperture of the air outlet 21 ranges from 0.8 to 3 mm. It can be understood that the aperture (unit: mm) of the air outlet 21 can be any value of 0.8, 1, 1.5, 1.8, 2, 2.5, 2.8, 3 or a range between any two values. The present application can limit the flow area of ​​the gas by controlling the aperture of the air outlet 21.

[0061] The shape of the air outlet hole 21 is at least one of a circular hole, an elliptical hole, and a polygonal hole, and can be specifically set according to actual conditions, and is not particularly limited here.

[0062] Furthermore, the gas dispersion member 2 may be a plate-shaped member, and the plate-shaped member may be an integrally formed arc-shaped plate-shaped member. Of course, the plate-shaped member may be formed by splicing a plurality of arc-shaped plate-shaped blocks, which will not be described in detail here.

[0063] In one embodiment, the ceramic electrode 3 of the corona treatment device 10 is located on a side of the gas dispersion member 2 away from the gas chamber 100, that is, the ceramic electrode 3 is disposed in the protective cover 1 and is located below the gas dispersion member 2. The gas in the gas chamber 100 is output to the ceramic electrode 3 through the gas outlet 21, so that the sheet 90 near the ceramic electrode 3 is subjected to corona treatment after being ionized by the ceramic electrode 3.

[0064] Further, the distance between the ceramic electrode 3 and the gas dispersion member 2 is W cm, which satisfies: 1≤W≤10, so that the plasma impact strength and chemical polarization effect can be ensured, thereby improving the ionization effect of the ceramic electrode 3 on the gas. It can be understood that the distance W (unit: cm) between the ceramic electrode 3 and the gas dispersion member 2 can be any value of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or a range between any two values.

[0065] like Figures 1 to 4 As shown, in one embodiment, the corona roller 5 of the corona treatment device 10 is located on a side of the ceramic electrode 3 away from the gas chamber 100, and the corona roller 5 and the ceramic electrode 3 are spaced apart from each other, so that a sheet channel 200 is formed between the corona roller 5 and the ceramic electrode 3, and the corona roller 5 is used to drive the sheet 90 through the sheet channel 200. It should be noted that the first direction X of the corona treatment device 10 is parallel to the axial direction of the corona roller 5.

[0066] In one embodiment, the air inlet assembly 4 of the corona treatment device 10 is disposed on the protective cover 1, and the air inlet assembly 4 is used to pass gas into the gas chamber 100. Specifically, the air inlet assembly 4 can be disposed on the plate body 11 or the first side plate 12 or the second side plate 13 of the protective cover 1, and no special limitation is made here, as long as the gas can be passed into the gas chamber 100 through the air inlet assembly 4. It should be noted that the figure shows that the air inlet assembly 4 can be disposed on the second side plate 13 of the protective cover 1.

[0067] The air intake component 4 can introduce one or at least two gases into the gas chamber 100. Specifically, the air intake component 4 may include a first air intake member 41 and a second air intake member 42. The first air intake member 41 is used to introduce a first gas, and the second air intake member 42 is used to introduce a second gas. The first gas and the second gas are mixed in the gas chamber 100 and then output through the gas outlet 21. Of course, in order to increase the concentration of the gas in the gas chamber 100, the first air intake member 41 and the second air intake member 42 may both introduce the same gas.

[0068] Furthermore, the first air inlet member 41 and the second air inlet member 42 can be air inlet pipes, air inlet devices, etc., which are not limited in the embodiments of the present disclosure. As shown in the combined figure, the second side plate 13 is provided with a first air inlet hole 131 and a second air inlet hole 132. The first air inlet member 41 is connected to the gas cavity 100 through the first air inlet hole 131, and the second air inlet member 42 is connected to the gas cavity 100 through the second air inlet hole 132. In this way, different types of gases can be introduced into the gas cavity 100 at the same time, and different gas environments can be obtained by mixing in the gas cavity 100, such as an oxidizing gas environment, a reducing gas environment, etc., so as to meet the special interface processing requirements of the added sheet 90.

[0069] Therefore, the corona treatment device 10 provided in the embodiment of the present application arranges the gas dispersion element 2 in the protective cover 1 to form a gas chamber 100, and delivers at least one gas to the gas chamber 100 through an external air intake component 4 to form different gas environments. The ceramic electrode 3 can ionize different gases. When the sheet 90 passes through the sheet channel 200 between the corona roller 5 and the ceramic electrode 3, special interface treatment requirements such as oxidation and reduction can be achieved for the sheet 90, which can expand the process window and equipment compatibility and reduce the one-time investment cost.

[0070] It should be noted that, in addition to using the above-mentioned air inlet component 4 to introduce gas into the gas chamber 100 to treat the surface of the sheet 90, the corona treatment device 10 can also treat the surface of the sheet 90 by placing a gas tank in the gas chamber 100, etc., which are not elaborated here.

[0071] Therefore, the corona treatment device 10 of the present application includes a protective cover 1, a gas dispersion component 2 and a ceramic electrode 3. The gas dispersion component 2 is arranged in the protective cover 1, and the gas dispersion component 2 and the protective cover 1 enclose a gas cavity 100. The gas in the gas cavity 100 is output to the ceramic electrode 3 through the gas outlet 21 of the gas dispersion component 2, so that the sheet 90 near the ceramic electrode 3 is ionized by the ceramic electrode 3 and then corona treatment is performed. This can simultaneously improve the plasma impact strength and the chemical polarization effect, thereby improving the corona effect of the sheet 90, and will not increase the use risk and energy consumption of the corona treatment device 10.

[0072] like Figure 7 As shown, Figure 7 for Figure 5 Cross section in the BB direction Figure 2 , which mainly reflects that the aperture of the air outlet hole 21 of the first dispersing portion 211 is larger than the aperture of the air outlet hole 21 of the second dispersing portion 212 .

[0073] In one embodiment, the gas dispersion member 2 includes a first dispersion portion 211 and a second dispersion portion 212, the second dispersion portion 212 is located on the left and right sides of the first dispersion portion 211 in the second direction Y, and the total flow area of ​​the gas outlet holes 21 of the first dispersion portion 211 is greater than the total flow area of ​​the gas outlet holes 21 of the second dispersion portion 212, so that various surface treatment requirements of the sheet 90 can be met. Specifically, the total flow area of ​​the gas outlet holes 21 of the first dispersion portion 211 is greater than the total flow area of ​​the gas outlet holes 21 of the second dispersion portion 212 located on the left or right side of the first dispersion portion 211. Alternatively, the total flow area of ​​the gas outlet holes 21 of the first dispersion portion 211 is greater than the total flow area of ​​the gas outlet holes 21 of the two second dispersion portions 212, which is not particularly limited here.

[0074] The corona treatment device 10 can be divided into zones for the gas dispersion element 2 according to the special treatment requirements of the surface of the sheet 90 to achieve the expected corona effect. For example, when the corona treatment device 10 is applied to the battery field, the sheet 90 is an aluminum foil or a copper foil, and these foils include a first coating area and a second coating area located on both sides of the first coating area, wherein the first dispersion part 211 is correspondingly arranged above the first coating area, and the second dispersion part 212 is correspondingly arranged above the second coating area. According to product requirements, the corona effect of the second coating area of ​​the sheet 90 can be reduced, so the total flow area of ​​the outlet holes 21 of the first dispersion part 211 can be greater than the total flow area of ​​the outlet holes 21 of the second dispersion part 212, so as to reduce the corona effect of the second coating area. Of course, when the second coating area of ​​the sheet 90 is a blank area, the outlet holes 21 can be not arranged in the second dispersion part 212 corresponding to the second coating area, so that while meeting product requirements, it can also save raw materials and production costs.

[0075] like Figure 8 As shown, Figure 8 for Figure 5 Cross section in the BB direction Figure 3 , which mainly reflects that the distribution density of the air outlet holes 21 of the first dispersing portion 211 is greater than the distribution density of the air outlet holes 21 of the second dispersing portion 212 .

[0076] In one embodiment, the method for making the total flow area of ​​the air outlet holes 21 of the first dispersion part 211 larger than the total flow area of ​​the air outlet holes 21 of the second dispersion part 212 includes: by setting the aperture of the air outlet holes 21 of the first dispersion part 211 larger than the aperture of the air outlet holes 21 of the second dispersion part 212; or, by setting the distribution density of the air outlet holes 21 of the first dispersion part 211 larger than the distribution density of the air outlet holes 21 of the second dispersion part 212.

[0077] Therefore, the corona treatment device 10 of the present application can meet various surface treatment requirements of the sheet 90 and further enhance the corona effect of the sheet 90 .

[0078] like Fig. 9 As shown, Fig. 9 A schematic diagram of the structure of a sheet material processing device provided in an embodiment of the present application.

[0079] In one embodiment, a sheet material processing device is provided, which includes an unwinding device 30 , a corona treatment device 10 , a coating device 50 , and a winding device 80 .

[0080] The unwinding device 30 comprises an unwinding roller on which a rolled unprocessed sheet 90 is disposed. The unwinding roller can release the unprocessed sheet 90 when rotating.

[0081] The corona treatment device 10 is disposed downstream of the unwinding device 30 to perform corona treatment on the sheet 90 .

[0082] The coating device 50 is disposed downstream of the corona treatment device 10, and coats the sheet 90 by a gravure coating process. The gravure coating method can coat the sheet 90 with a uniform, continuous and thin material without defects such as offset printing and wrinkles on the surface of the material, thereby helping to improve the coating quality.

[0083] The winding device 80 is disposed downstream of the coating device 50. The winding device 80 can rotate to collect the processed sheet 90 and wind it into a roll for use.

[0084] In one embodiment, the sheet material processing equipment further comprises an exhaust gas recovery device 20 connected to the corona treatment device 10. After the corona treatment device 10 performs corona treatment on the sheet material 90, the generated gas is recovered or burned through the exhaust gas recovery device 20.

[0085] In one embodiment, the sheet material processing device further includes a first correcting device 40, which is arranged downstream of the unwinding device 30 and upstream of the corona treatment device 10. The first correcting device 40 constitutes a first correcting control adjustment system, which is composed of a first correcting adjustment roller and a first correcting guide roller, and a detector of the sheet material 90 is installed between the two rollers, which can control the roller correcting adjustment sheet material 90 to feed into the corona treatment device 10. Offset position or angle.

[0086] In this embodiment, the sheet material processing apparatus further includes a drying device 60, which is disposed downstream of the coating device 50 and upstream of the winding device 80. The drying device 60 may be an oven or other drying device, which is not particularly limited herein.

[0087] In one embodiment, the sheet material processing device further comprises a second correction device 70, which is arranged downstream of the drying device 60 and upstream of the winding device 80. The second correction device constitutes a second correction control adjustment system, which is composed of a second correction adjustment roller and a second correction guide roller, and a strip position detector is installed between the two rollers, which can control the roller correction adjustment sheet 90 when the position or angle is wound.

[0088] Therefore, the sheet material processing equipment can perform corona treatment on various sheets 90, and the overall structural design of the sheet material processing equipment is reasonable, the structure is simple, it is easy to assemble and manufacture, the layout is compact, it does not occupy space, and it can meet different production needs.

[0089] The performance of the technical solution provided in the embodiments of the present application is evaluated in conjunction with specific embodiments.

[0090] Examples 1 to 5 and Comparative Example 1 are provided. Examples 1 to 3 satisfy 1≤W≤10, Examples 4 and 5 do not satisfy 1≤W≤10, and the W of Comparative Example 1 is 5 cm, but no gas is introduced during the corona process, which is used as a corona effect benchmark. The power of Examples 1 to 5 is 6KW. Specific parameters and test results are detailed in Table 1.

[0091] Test method: Under the same power supply power of 6KW, the distance between the ceramic electrode and the gas dispersion element is set in the corona treatment device, and then the foil is corona treated, and then the slurry of the corresponding electrode is coated, and the ratio of the ionized area to the non-ionized area on the foil is calculated to obtain the ionization effect of the foil. Among them, the ionized foil can be photographed by a camera, and then the image is generated to the host computer, and the image is processed by the processing system of the host computer to obtain the ionized area and the non-ionized area on the foil, so as to obtain the ratio of the ionized area to the non-ionized area. The above is only one of the calculation methods for the ratio of the ionized area to the non-ionized area on the foil. Of course, other calculation methods can also be used, and no special limitation is made here.

[0092] It should be noted that the distance between the ceramic battery and the gas dispersion element can be measured by using other measuring tools such as a ruler, a tape measure, and a vernier caliper.

[0093] Table 1

[0094] project W(cm) Ionization effect (%) Power(KW) Example 1 1 170％ 6 Example 2 5 200％ 6 Example 3 10 130％ 6 Example 4 0.5 120％ 6 Example 5 12 110％ 6 Comparative Example 1 5 100％ 6

[0095] It can be seen that in the above-mentioned embodiments 1 to 3, under the same power supply power of 6KW, when the distance between the ceramic battery and the gas dispersion member is maintained at 1cm≤W≤10cm, and gas is introduced into the gas cavity, the ionization effect of the ceramic electrode on the gas is maintained at more than 130%, which can further improve the ionization effect of the ceramic electrode on the gas, and can simultaneously improve the plasma impact strength and chemical polarization effect, thereby improving the corona effect of the sheet, and will not increase the use risk and energy consumption of the corona treatment device. In embodiments 4 and 5, the distance between the ceramic battery and the gas dispersion member is not within the range of 1cm≤W≤10cm, and the ionization effect of the ceramic electrode on the gas is slightly reduced, which may affect the corona effect of the corona treatment device on the sheet. By comparing Example 2 with Comparative Example 1, it can be seen that in Example 2, one or more gases are introduced into the gas chamber 100 to form oxidizing gas, reducing gas, etc., and the ceramic electrode ionizes these gases, and the ionization effect is 200%; while in Comparative Example 1, no gas is introduced during the corona process, that is, the ceramic electrode ionizes the air, and the ionization effect is 100%. It can be seen that under the same conditions, the corona effect of the sheet can be further improved by ionizing oxidizing gas, reducing gas, etc. Therefore, using the corona treatment device of the present application to perform corona treatment on the sheet near the ceramic electrode can simultaneously improve the plasma impact strength and the chemical polarization effect.

[0096] The above is a detailed introduction to a corona treatment device and a sheet processing equipment provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A corona treatment device, characterized in that: include: Protective cover; A gas dispersion member is disposed on the protective cover, and the gas dispersion member and the protective cover cooperate to enclose a gas cavity, and the gas dispersion member is provided with a gas outlet hole connected to the gas cavity; as well as The ceramic electrode is located at a side of the gas dispersion member away from the gas cavity. The gas in the gas cavity is output to the ceramic electrode through the gas outlet hole, so as to perform corona treatment on the sheet material near the ceramic electrode after being ionized by the ceramic electrode.

2. The corona treatment device according to claim 1, characterized in that: The number of the gas outlet holes is multiple, and the gas outlet holes are distributed on the gas dispersion member at intervals.

3. The corona treatment device according to claim 2, characterized in that: The corona treatment device has a first direction and a second direction that intersect; The corona treatment device also includes: a corona roller, located on a side of the ceramic electrode away from the gas chamber, and the corona roller and the ceramic electrode are spaced apart from each other, so that a sheet material channel is formed between the corona roller and the ceramic electrode, and the corona roller is used to drive the sheet material through the sheet material channel; the first direction is parallel to the axial direction of the corona roller; The gas dispersion component includes a first dispersion portion and a second dispersion portion, the second dispersion portion is located on both sides of the first dispersion portion in the second direction, and the total flow area of ​​the gas outlet holes of the first dispersion portion is greater than the total flow area of ​​the gas outlet holes of the second dispersion portion.

4. The corona treatment device according to claim 3, characterized in that: The aperture of the air outlet holes of the first dispersing portion is larger than the aperture of the air outlet holes of the second dispersing portion.

5. The corona treatment device according to claim 3, characterized in that: The distribution density of the air outlet holes of the first dispersing portion is greater than the distribution density of the air outlet holes of the second dispersing portion.

6. The corona treatment device according to claim 1, characterized in that: The corona treatment device also includes: An air intake assembly is arranged on the protective cover, and the air intake assembly is used to introduce gas into the gas cavity.

7. The corona treatment device according to claim 6, characterized in that: The air intake assembly includes a first air intake member and a second air intake member. The first air intake member is used to introduce a first gas, and the second air intake member is used to introduce a second gas. The first gas and the second gas are mixed in the gas cavity and then output through the gas outlet.

8. The corona treatment device according to claim 1, characterized in that: The distance between the ceramic electrode and the gas dispersion element is W cm, satisfying: 1≤W≤10.

9. A sheet material processing device, characterized in that: include: Unwinding device; The corona treatment device according to any one of claims 1 to 7, wherein the corona treatment device is arranged downstream of the unwinding device; A coating device, disposed downstream of the corona treatment device; as well as The winding device is arranged downstream of the coating device.

10. The sheet material processing apparatus according to claim 9, characterized in that: Also includes: An exhaust gas recovery device connected to the corona treatment device; A first correcting device, disposed downstream of the unwinding device and upstream of the corona treatment device; A drying device, disposed downstream of the coating device and upstream of the winding device; The second correcting device is arranged downstream of the drying device and upstream of the winding device.

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