Local electroplating thickening process for metal gauze

Abstract

The invention discloses a local electroplating thickening process for metal gauze, which comprises the following steps: S1, cleaning the metal gauze, and placing the metal gauze on a metal bottom plate after the metal gauze is cleaned; s2, covering the metal gauze with a photosensitive mask by using a film laminating machine, and then putting the metal gauze into an oven for baking; s3, exposing the laminated plate, not exposing the area needing to be thickened, and exposing other areas; s4, developing the exploded bottom plate, dissolving and removing the mask in an unexposed area, and only reserving the mask in an exposed area; and S5, the bottom plate and the gauze are washed clean after developing, the bottom plate and the gauze are fixed to a clamp together, electroplating is conducted in an electroplating bath, the needed area is not covered with a mask, electroplating liquid can permeate into the gauze, and the two faces of the gauze are electroplated. According to the process, the photosensitive mask can be embedded into the gauze to effectively and flexibly shield an area which is not subjected to thickening treatment by utilizing the characteristic that the photosensitive mask is relatively soft in texture, and the subsequent normal production of the area is not influenced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printing screen, more particularly, it relates to a local electroplating thickening process of metal screen. BACKGROUND

[0002] Generally, the metal screen is of similar thickness at different positions due to its manufacturing process. In the screen manufacturing process, not all areas need to maintain the same thickness. The printing area needs to maintain uniform thickness. In the case of uniform thickness of other areas, the rupture caused by insufficient strength in the printing process will occur. Therefore, a way to increase the overall strength of the screen by thickening other areas is needed. There is no such screen and technology on the market. The screen area thickening technology can thicken the required area while keeping other areas unchanged. By increasing the thickness of the remaining positions while maintaining the thickness of the required area, the overall strength is increased.

[0003] The existing technology generally involves multi-layer stacking or local weaving, which changes the morphology of the screen itself, is not conducive to subsequent production, and has poor overall effect. Accordingly, the present application provides a local electroplating thickening process of metal screen. SUMMARY

[0004] The present application aims to overcome the shortcomings of the prior art and provide a local electroplating thickening process of metal screen.

[0005] To solve the above technical problems, the purpose of the present application is achieved as follows: a local electroplating thickening process of metal screen, comprising the following steps:

[0006] S1. Clean the metal screen, and place it on a metal base plate after the cleaning is completed;

[0007] S2. Cover the photosensitive mask on the metal screen using a laminating machine, and then place it in an oven for 15 minutes at 50 DEG C to ensure the adhesion;

[0008] S3. Expose the laminated plate, and do not expose the required thickening area, and expose other areas;

[0009] S4. Develop the exposed base plate, dissolve and remove the mask in the unexposed area, and only leave the mask in the exposed area;

[0010] S5. Rinse the developed base plate and screen, fix them on the fixture together with the base plate, and then put them into the electroplating tank for electroplating. Since the required area is not covered by the mask, the electroplating liquid can penetrate into the screen, and both sides of the screen are electroplated;

[0011] S6. After the electroplating is finished, the bottom plate and the screen gauze are put into a stripping tank to be stripped with alkali or a stripping agent. After the stripping is finished, the screen gauze is rinsed to remove all residual masks, and then the screen gauze can be lifted to obtain the required thickened screen gauze.

[0012] The application is further provided as follows: in step S1, surface oil stains and impurities are removed by using an organic solvent or an alkali solution.

[0013] The application is further provided as follows: in step S2, exposure is performed by using an LDI device.

[0014] The application is further provided as follows: in step S4, development is performed by using a 0.5% sodium carbonate solution.

[0015] The application is further provided as follows: in step S5, the electroplating current, the electroplating time and other parameters are flexibly changed according to the required thickness.

[0016] In summary, the application has the following beneficial effects: the local electroplating thickening process of the metal screen gauze can effectively and flexibly shield the area that is not thickened by embedding the soft light-sensitive mask into the screen gauze, does not affect the subsequent normal production of the area, can maintain a stable thickness range of the thickened area, can expose specific areas by using an LDI device and can expose various different pattern types with high enough precision, and reduces damage to the screen gauze; the technology has low cost, is easy to operate, has perfect overall functions and is highly practical. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the application. DETAILED DESCRIPTION

[0018] In order for those skilled in the art to better understand the technical solutions of the application, the preferred embodiments of the application are described below in combination with specific examples, but it should be understood that these descriptions are only intended to further illustrate the features and advantages of the application, and are not intended to limit the patent claims of the application. Based on the examples in the application, all other examples obtained by those skilled in the art without making creative efforts fall within the scope of protection of the application.

[0019] The application is further illustrated below in combination with the drawings and preferred embodiments.

[0020] Example 1

[0021] Referring to Figure 1 the application relates to a local electroplating thickening process of a metal screen gauze, which comprises the following steps:

[0022] S1. The metal screen gauze 2 is cleaned and treated, and then placed on a metal bottom plate 1;

[0023] S2. Cover the photosensitive mask 3 on the metal gauze 2 using a laminating machine, and then put it into an oven for 15 minutes of 50℃ baking to ensure the adhesion;

[0024] S3. Expose the laminated plate, and do not expose the required thickening area, and expose other areas;

[0025] S4. Develop the exposed bottom plate, dissolve and remove the mask in the unexposed area, and only leave the mask in the exposed area;

[0026] S5. After development, rinse the bottom plate and the gauze, fix them on the fixture together, and put them into an electroplating tank for electroplating. Since the required area is not covered by the mask, the electroplating solution can penetrate into the gauze, and the gauze is electroplated on both sides;

[0027] S6. After electroplating, put the bottom plate and the gauze into a stripping tank and use alkali or stripping agent for stripping. After stripping, rinse the gauze to remove all residual masks, and then the gauze can be lifted to obtain the required thickened gauze.

[0028] Further, in step S1, organic solvents or alkali are used to remove surface oil and impurities.

[0029] Further, in step S2, LDI equipment is used for exposure.

[0030] Further, in step S4, a sodium carbonate solution of 0.05% is used for development.

[0031] Further, in step S5, the electroplating current, electroplating time and other parameters are flexibly changed according to the required thickness.

[0032] The local electroplating thickening process of the metal gauze disclosed in the present application can effectively and flexibly shield the area not to be thickened by embedding the soft photosensitive mask into the gauze, without affecting the subsequent normal production of the area. The thickening area can maintain a stable thickness range. The use of LDI equipment can expose specific areas and expose various different pattern types with high enough precision, reducing the damage to the gauze. The technology has low cost, convenient operation, perfect overall function and strong practicality.

[0033] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an overly literal or overly formal sense unless expressly so defined herein.

[0034] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an overly literal or overly formal sense unless expressly so defined herein.

[0035] The preferred embodiments of the present application have been described in detail. It should be understood that modifications and variations can be made by those of ordinary skill in the art without departing from the spirit and scope of the application. Accordingly, it is intended that the application be protected by the following claims, including all equivalents.

Claims

1. A local electroplating thickening process for metal mesh, characterized in that: The following steps are involved: S1. Clean the metal mesh and place it on a metal base; S2. Use a laminating machine to cover the metal mesh with a photosensitive mask. Then bake it in an oven at 50°C for 15 minutes to ensure adhesion. S3. The coated plate is exposed, the desired thickening area is not exposed, and other areas are exposed; S4. The exposed substrate is developed, and the mask in the unexposed area is dissolved and removed, leaving only the mask in the exposed area; S5. After development, rinse the base plate and mesh, secure them together with the base plate to a fixture, and place them in a plating tank for electroplating. Since the required area is not covered by a mask, the plating solution can penetrate the mesh, and both sides of the mesh are electroplated. S6. After the electroplating is completed, place the base plate and mesh into the demolding tank and use alkali solution or demolding agent to demold the mesh. After the demolding is completed, rinse the mesh to remove all residual masks and then lift up the mesh to obtain the desired thickened mesh.

2. The local electroplating thickening process of metal mesh according to claim 1, characterized in that: In step S1, surface oil stains and impurities are removed by treatment with an organic solvent or alkali solution.

3. The local electroplating thickening process of metal mesh according to claim 1, characterized in that: In step S2, exposure is performed using an LDI device.

4. The local electroplating thickening process of metal mesh according to claim 1, characterized in that: In step S4 , a 0.5% sodium carbonate solution is used for development.

5. The local electroplating thickening process of metal mesh according to claim 1, characterized in that: In step S5, parameters such as electroplating current and electroplating time are flexibly changed according to the required thickness.

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