High-wear-resistance composite layer metal plate
By laying metal plates on a metal mesh and using an adhesive layer and stepped printing grooves, the problem of insufficient wear resistance of metal plates was solved, improving printing quality and production efficiency while reducing costs.
Patent Information
- Application Number
- CN202520696290.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-12
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-04-12
AI Technical Summary
The existing metal plates have insufficient wear resistance during the printing process, which leads to a decrease in mesh precision, a decrease in yield, an increase in cost, and a decrease in production efficiency.
A metal plate is laid on a metal mesh and fixed with an adhesive layer. The metal plate replaces the metal mesh and rubs against the squeegee. Ink flows from the printing tank into the mesh openings of the metal mesh. The printing tank is designed as a stepped groove to store ink. Polyimide film or Teflon coating is used to improve adhesion strength and elastic cushioning.
It improves the wear resistance of the metal plate, prevents the metal mesh from cracking, ensures printing quality and production efficiency, and reduces replacement frequency and cost.
Smart Images
Figure CN223904707U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to solar cell production technical field, especially a kind of high wear resistance composite layer metal plate. BACKGROUND
[0002] In the production process of solar cell, screen printing occupies a pivotal position, and its requirement for printing quality is almost rigorous. The metal plate currently applied to solar screen printing exhibits both advantages and disadvantages in actual production practice.
[0003] From the advantage level, the mesh precision of metal plate is excellent, which can realize extremely fine pattern printing. Taking the field of electronic component printing as an example, in this scene with extremely high precision requirement, metal plate can accurately and clearly present tiny lines and marks, and can print fine patterns of tens of microns at the minimum, fully demonstrating its high-precision printing capability. In addition, metal plate performs well in tension bearing. In the printing process, even if it faces a large tension, it can always maintain a stable shape and is not prone to deformation. This stable structural characteristic makes the transfer of ink more uniform during printing, effectively ensuring the consistency of printing quality and laying a solid foundation for realizing high-quality solar screen printing.
[0004] However, metal plate has gradually exposed some serious problems that need to be solved in long-term industrial application. Because the metal mesh of metal plate needs to be rubbed frequently with a squeegee for a long time during printing operation, the metal mesh structure is easily changed, resulting in poor wear resistance of metal plate. The negative effects brought by this shortcoming are as follows: on the one hand, as the use frequency increases, the photosensitive glue on the metal mesh is worn out, which causes the mesh precision to gradually decrease, making it difficult to continuously meet the increasing demand for high-precision printing in the solar industry, and seriously affecting the fineness of printed patterns, which greatly reduces the yield of products; on the other hand, poor wear resistance greatly shortens the service life of metal plate, and frequent replacement of metal plate not only significantly increases production cost, but also causes production to stop due to replacement operation, which seriously restricts the improvement of production efficiency. SUMMARY
[0005] In view of the defects in the prior art, the technical problem solved by the utility model is how to improve the wear resistance of metal plate.
[0006] To achieve the above purpose, the high wear resistance composite layer metal plate provided by the utility model comprises:
[0007] The metal plate comprises a metal mesh, and the metal mesh is divided into a first region and a second region. The mesh holes in the first region of the metal mesh are filled with photosensitive glue.
[0008] A metal plate is laid on the top surface of the metal mesh, and the metal plate covers all the mesh holes of the second area to realize the friction between the squeegee and the top surface of the metal plate.
[0009] A printing groove is opened on the metal plate, and the printing groove is located directly above all the mesh holes of the second area to realize the flow of the ink on the metal plate from the printing groove into the mesh holes of the second area.
[0010] By adopting the above technical solution, the ink is poured on the metal plate, the metal plate replaces the metal mesh to rub with the squeegee, the ink on the metal plate flows from the printing groove into the mesh holes of the second area of the metal mesh, and the pattern printing is realized, thereby solving the problems of reduced yield, increased cost and reduced production efficiency caused by the long-time and frequent friction between the metal mesh and the squeegee, and thus the composite metal plate improves the wear resistance of the metal plate.
[0011] In an embodiment, an adhesive layer is laid between the metal plate and the metal mesh, a through groove is opened on the adhesive layer, and the trace of the through groove is the same as that of the printing groove to realize the flow of the ink on the metal plate from the printing groove into the through groove and finally into the mesh holes of the second area.
[0012] By adopting the above technical solution, the adhesive layer improves the stability of the metal plate fixed on the metal mesh, and avoids the direct collision between the metal plate and the metal mesh to cause the cracking of the metal mesh.
[0013] In an embodiment, the adhesive layer is a polyimide film.
[0014] By adopting the above technical solution, the elastic buffer of the polyimide film further avoids the cracking of the metal mesh.
[0015] In an embodiment, the adhesive layer is a Teflon coating.
[0016] By adopting the above technical solution, the adhesion strength between the metal plate and the metal mesh is improved, and the elastic buffer of the Teflon coating further avoids the cracking of the metal mesh.
[0017] In an embodiment, the cross section of the printing groove includes a plurality of concave grooves arranged in steps, and the opening of the concave groove is sequentially reduced from top to bottom to realize the storage of the ink in the concave groove.
[0018] By adopting the above technical solution, the structure design of the printing groove can realize the storage of the ink in the concave groove to avoid the phenomenon of grid line interruption.
[0019] In an embodiment, the connection between two adjacent concave grooves is a slope.
[0020] Through the above technical scheme, the ink stored in the groove flows more smoothly into the mesh hole of the second area, so that the clarity and precision of pattern printing are improved, and the phenomenon of grid line interruption is further avoided.
[0021] In an embodiment, the metal plate is made of nickel or copper.
[0022] Through the above technical scheme, the wear resistance of the high wear resistance composite layer metal plate is further improved; at the same time, the metal plate will be deformed due to the friction of the scraper, and the above material avoids damage of the metal plate caused by frequent deformation.
[0023] In an embodiment, the metal plate further comprises a metal mesh frame, a polyester mesh and hot melt adhesive, the periphery of the metal mesh is fixedly provided with the polyester mesh through the hot melt adhesive, and the periphery of the polyester mesh is fixedly provided with the metal mesh frame.
[0024] Through the above technical scheme, when pattern printing is performed, the scraper synchronously presses the metal plate and the partial area of the metal mesh downward, the polyester mesh is elastic, so that the periphery of the metal mesh is pulled, and after the scraper passes through the partial area, the polyester mesh drives the area to return to the initial position.
[0025] Through the above technical scheme, the adhesion layer improves the stability of the metal plate fixed on the metal mesh; at the same time, direct collision of the metal plate and the metal mesh is avoided, so that the problem of cracking of the metal mesh is avoided; the Teflon coating improves the bonding strength between the metal plate and the metal mesh; and the elastic buffer of the Teflon coating further avoids cracking of the metal mesh.
[0026] In summary, the utility model has at least one of the following beneficial technical effects:
[0027] 1. The metal plate is fixed on the metal mesh, the ink is poured on the metal plate, the metal plate replaces the metal mesh to rub with the scraper, the ink on the metal plate flows into the mesh hole of the second area of the metal mesh from the printing groove, so that pattern printing is realized, the problem of reduced yield, increased cost and reduced production efficiency caused by frequent friction of the metal mesh with the scraper for a long time is solved, and therefore the high wear resistance composite layer metal plate improves the wear resistance of the metal plate.
[0028] 2. The adhesion layer is arranged between the metal plate and the metal mesh, so that the stability of the metal plate fixed on the metal mesh is improved; at the same time, direct collision of the metal plate and the metal mesh is avoided, so that the problem of cracking of the metal mesh is avoided.
[0029] 3、The cross section of the printing groove is designed as a plurality of stepped arrangements, so that the ink can be stored in the groove, and when the scraper rubs against the metal plate, uneven force may cause part of the printing groove to have no ink entering, but the ink can still enter the mesh holes of the second area, thereby avoiding the phenomenon of grid line interruption. BRIEF DESCRIPTION OF DRAWINGS
[0030] Figure 1 It is a structural schematic view of the high wear resistance composite layer metal plate according to the embodiment of the present application.
[0031] Figure 2 It is a structural schematic view of the metal plate according to the embodiment of the present application.
[0032] Figure 3 It is an exploded view of Figure 1 .
[0033] Figure 4 It is an A-A sectional view of Figure 3 .
[0034] In the figure: 1-metal plate, 101-metal mesh, 102-hot melt adhesive, 103-polyester mesh, 104-metal mesh frame, 2-metal plate, 3-printing groove, 4-adhesion layer, 5-passing groove, 6-groove, 7-inclined slope. DETAILED DESCRIPTION
[0035] The embodiments of the present application will be further described in detail below with reference to the accompanying drawings.
[0036] The high wear resistance composite layer metal plate according to the embodiment of the present application, as shown in Figure 1 , 2 , comprises a metal plate 1, which comprises a metal mesh 101, the metal mesh 101 is divided into a first area and a second area, the mesh holes in the first area of the metal mesh 101 are filled with photosensitive adhesive, and the mesh holes in the second area are not filled with any filler.
[0037] A metal plate 2 is arranged on the top surface of the metal mesh 101, and the metal plate 2 covers all the mesh holes in the second area to realize the friction between the scraper and the top surface of the metal plate 2.
[0038] A printing groove 3 is arranged on the metal plate 2, and the printing groove 3 is located directly above all the mesh holes in the second area to realize the flow of ink on the metal plate 2 from the printing groove 3 into the mesh holes in the second area.
[0039] Therefore, the metal plate 2 is laid and fixed on the metal mesh 101, when pattern printing is needed, the metal plate 2 replaces the metal mesh 101 to rub with the scraper, and the ink on the metal plate 2 is poured on the metal mesh 101, the ink is made to enter the printing groove 3 on the metal plate 2 through the back and forth swing of the scraper, the printing groove 3 is located above the mesh hole of the second area, and the mesh hole of the second area of the metal mesh 101 is not filled with photosensitive glue, so that the ink on the metal plate 2 flows into the mesh hole of the second area of the metal mesh 101 from the printing groove 3, thereby realizing pattern printing, solving the problems of reducing the yield, increasing the cost and reducing the production efficiency caused by the frequent rubbing of the metal mesh 101 with the scraper for a long time, and therefore the composite metal plate improves the wear resistance of the metal plate 1.
[0040] Preferably, referring to Figure 3 As shown, the metal plate 2 and the metal mesh 101 are laid with the adhesion layer 4, the through groove 5 is formed on the adhesion layer 4, and the track of the through groove 5 is the same as that of the printing groove 3, so that the ink on the metal plate 2 flows into the through groove 5 from the printing groove 3, and finally flows into the mesh hole of the second area.
[0041] Specifically, the adhesion layer 4 is laid between the metal plate 2 and the metal mesh 101, so that the metal plate 2 and the metal mesh 101 are fixedly connected, when pattern printing is performed, the ink is made to enter the printing groove 3 on the metal plate 2 through the back and forth swing of the scraper, and then enter the through groove 5 of the adhesion layer 4, and finally flow into the mesh hole of the second area of the metal mesh 101, so as to realize pattern printing. The adhesion layer 4 improves the stability of the metal plate 2 fixed on the metal mesh 101; at the same time, the direct collision between the metal plate 2 and the metal mesh 101 is avoided, so that the problem of cracking of the metal mesh 101 is avoided; in order to avoid that the adhesion layer 4 blocks the flow of the ink, the through groove 5 with the same track (the same as the printing groove 3 and the mesh hole of the second area) is formed on the adhesion layer 4, that is, the through groove 5 is located directly below the printing groove 3 and directly above the mesh hole of the second area.
[0042] Further, a specific structure of the first adhesion layer 4 is provided:
[0043] The adhesion layer 4 is a polyimide film (PI film).
[0044] Specifically, the polyimide film has excellent heat resistance, mechanical properties and chemical stability, the elastic buffer of the polyimide film further avoids the cracking of the metal mesh 101, and can effectively isolate the influence of the external environment on the metal mesh 101, thereby prolonging the overall service life of the metal plate 1.
[0045] Further, a specific structure of the second adhesion layer 4 is provided:
[0046] The adhesion layer 4 is a Teflon coating.
[0047] Specifically, the adhesion strength between the metal plate 2 and the metal mesh 101 is further optimized; meanwhile, the elastic buffer of the Teflon coating further avoids the cracking of the metal mesh 101; and the production cost of the Teflon coating is reduced compared with the polyimide film.
[0048] Preferably, referring to Figure 4 As shown in the drawings, the cross section of the printing groove 3 comprises a plurality of step-shaped recesses 6, and the openings of the recesses 6 are sequentially reduced from top to bottom to realize the storage of ink in the recesses 6.
[0049] Specifically, the cross section of the printing groove 3 is designed as a plurality of step-shaped recesses 6, and the openings of the recesses 6 are sequentially reduced from top to bottom, i.e. in a down-stair structure. This design not only increases the ink storage capacity, but also prevents ink overflow. When the scraper rubs against the metal plate 2, uneven stress may cause some printing grooves 3 to have no ink entering, but there is still ink entering the mesh holes in the second area, thereby avoiding the phenomenon of grid line interruption.
[0050] Further, the connection between two adjacent recesses 6 is a slope 7.
[0051] Specifically, the slope 7 makes the ink stored in the recesses 6 flow more smoothly into the mesh holes in the second area, thereby improving the clarity and precision of pattern printing, and further avoiding the phenomenon of grid line interruption; the slope of the slope 7 can be designed according to actual needs, and the depth and width of the recesses 6 can also be designed according to actual needs, which are processed by a numerical control machine tool, and then the wall surface of the recesses 6 is polished to reduce the flow resistance of the ink.
[0052] Preferably, the material of the metal plate 2 is selected from nickel or copper.
[0053] Specifically, the above-mentioned material can further improve the wear resistance of the high-wear-resistance composite layer metal plate; at the same time, the metal plate 2 will be deformed due to the friction of the scraper, and the above-mentioned material avoids the damage of the metal plate 2 caused by frequent deformation.
[0054] Preferably, referring to Figure 2 As shown in the drawings, the metal plate 1 further comprises a metal mesh frame 104, a polyester mesh 103 and a hot melt adhesive 102, the metal mesh 101 is fixedly provided with the polyester mesh 103 through the hot melt adhesive 102, and the polyester mesh 103 is fixedly provided with the metal mesh frame 104.
[0055] Specifically, when pattern printing is performed, the scraper synchronously presses the metal plate 2 and part of the metal mesh 101 downward, and the polyester mesh 103 is elastically deformed to hold the periphery of the metal mesh 101, and after the scraper passes through the part, the polyester mesh 103 drives the part to return to the initial position.
[0056] The manufacturing method of the high-wear-resistance composite layer metal plate in the embodiment of the utility model, comprises the following steps:
[0057] Place the metal plate 1 horizontally, and fill the photosensitive glue in all the mesh holes of the metal mesh 101;
[0058] Clean the metal plate 2 by ultrasonic cleaning with an organic solvent (such as acetone or ethanol) to remove surface oil stains and particles; increase the surface roughness of the metal plate 2 by sandblasting or chemical etching (such as dilute sulfuric acid solution) to improve the adhesion of the adhesion layer 4;
[0059] After the photosensitive glue solidifies, lay the metal plate 2 on the metal mesh 101 through the adhesion layer 4;
[0060] Synchronously open grooves for pattern printing on the metal plate 2, the adhesion layer 4 and the metal mesh 101 to form a high-wear-resistance composite layer metal plate.
[0061] It should be noted that the grooving of the metal mesh 101 removes the photosensitive glue inside the mesh holes of the second area to form grooves for pattern printing.
[0062] Therefore, the metal plate 2 is laid and fixed on the metal mesh 101, when pattern printing is needed, the metal plate 2 replaces the metal mesh 101 to rub with the squeegee, and the ink on the metal mesh 101 is poured on the metal plate 2, the squeegee is swung back and forth to make the ink enter the printing groove 3 on the metal plate 2, because the printing groove 3 is located directly above all the mesh holes of the second area, and the mesh holes of the second area of the metal mesh 101 are not filled with photosensitive glue, the ink on the metal plate 2 flows from the printing groove 3 into the mesh holes of the second area of the metal mesh 101, thereby realizing pattern printing, solving the problems of reduced yield, increased cost and reduced production efficiency caused by the frequent rubbing of the metal mesh 101 with the squeegee for a long time, and therefore the high-wear-resistance composite layer metal plate improves the wear resistance of the metal plate 1.
[0063] Preferably, the metal plate 2 is laid on the metal mesh 101 through the adhesion layer 4, and the first scheme specifically comprises:
[0064] Coat the liquid polyamide acid on the bottom surface of the metal plate 2, and solidify the liquid polyamide acid by heating;
[0065] When the liquid polyamide acid is solidified into a molten state, attach the metal plate 2 to the metal mesh 101, and make the molten polyamide acid perform imidization reaction by heating and pressing;
[0066] When the molten polyamide acid imidization reaction is a polyimide film, the adhesion layer 4 is formed.
[0067] Specifically, polyamide acid (PAA) powder is dissolved in a polar solvent (such as N-methyl pyrrolidone, NMP) to prepare a uniform solution with a solid content of 15% to 25%;
[0068] The polyamide acid solution is uniformly coated on the surface of the metal plate 2 by using a doctor blade coating or spin coating process, and the wet film thickness is controlled to be 20-50 μm;
[0069] At room temperature, stand for 5-10 minutes to eliminate the bubbles and uneven thickness generated in the coating process;
[0070] The polyamide acid solution is solidified by heating, and the polyamide acid solution is solidified into a molten state to remove most of the solvent, so that the polyamide acid is partially cross-linked to form a gel state and has initial adhesion;
[0071] The metal plate 2 is attached to the metal mesh 101, and the optical positioning system is used to ensure that the metal mesh 101 is accurately aligned with the metal plate 2;
[0072] The molten polyamide acid is subjected to imidization reaction by heating and pressing, and is converted into a polyimide film, and the metal mesh 101, the polyester mesh 103 and the metal substrate are tightly bonded;
[0073] After natural cooling to room temperature, the composite layer structure is taken out from the hot press, and the interface bonding is checked without delamination.
[0074] Preferably, the metal plate 2 is laid on the metal mesh 101 through the adhesive layer 4, and the second scheme specifically includes:
[0075] The heated Teflon paint is sprayed on the bottom surface of the metal plate 2;
[0076] After the Teflon paint is sprayed and cooled, the adhesive layer 4 is formed;
[0077] The metal plate 2 is bonded and fixed on the metal mesh 101.
[0078] Specifically, the Teflon paint or the metal plate 2 is heated to 170-180℃;
[0079] The Teflon paint is sprayed on the bottom surface of the metal plate 2;
[0080] After the spraying is completed, the paint is preliminarily leveled and partially cross-linked at 170-180℃ for 3-5 minutes; natural cooling to 80-100℃, and then rapid cooling to room temperature (25℃) by using a forced air cooling or water cooling device;
[0081] After the Teflon paint is sprayed and cooled, the cooled metal plate 2 is aligned and attached to the metal mesh 101; a pressure (5-10 MPa) is applied for 10-15 minutes to realize the physical adhesion of the metal mesh 101 and the metal plate 2 by using the viscoelasticity of the Teflon coating, so as to form the adhesive layer 4.
[0082] If increased adhesion is desired, the coating can be cured in an oven at 120-150°C for 30 minutes to promote chemical bonding of the coating to the metal mesh 101.
[0083] The preceding merely illustrates the principles of the application. Various modifications and changes can be made thereto without departing from the spirit or scope of the application as set forth in the appended claims. The specification is to be regarded in an illustrative rather than a restrictive sense.
Claims
1. A high abrasion resistance composite layer metal plate, characterized by, It includes: The metal plate (1) includes a metal mesh (101), the metal mesh (101) is divided into a first area and a second area, the mesh hole of the first area of the metal mesh (101) is filled with photosensitive glue; The metal plate (2) is laid on the top surface of the metal mesh (101), and the metal plate (2) covers all the mesh holes of the second area to realize the friction between the scraper and the top surface of the metal plate (2); The printing groove (3) is opened on the metal plate (2), and the printing groove (3) is located directly above all the mesh holes of the second area to realize that the ink on the metal plate (2) flows from the printing groove (3) into the mesh hole of the second area.
2. The high wear resistance composite layer metal plate according to claim 1, wherein: The metal plate (2) and the metal mesh (101) are laid with an adhesive layer (4), the adhesive layer (4) is provided with a through groove (5), and the track of the through groove (5) is the same as that of the printing groove (3), so that the ink on the metal plate (2) flows from the printing groove (3) into the through groove (5) and finally into the mesh hole of the second area.
3. The high wear resistance composite layer metal plate according to claim 2, wherein: The adhesive layer (4) is a polyimide film.
4. The high wear resistance composite layer metal plate according to claim 2, wherein: The adhesive layer (4) is a Teflon coating.
5. The high wear resistance composite layer metal plate according to claim 1, wherein: The cross section of the printing groove (3) includes a plurality of concave grooves (6) arranged in steps, and the opening of the concave groove (6) is sequentially reduced from top to bottom, so that the concave groove (6) stores ink.
6. The high wear resistance composite layer metal plate according to claim 5, wherein: The connection between two adjacent concave grooves (6) is a slope (7).
7. The high wear resistance composite layer metal plate according to claim 1, wherein: The material of the metal plate (2) is selected from nickel or copper.
8. The high wear resistance composite layer metal plate according to claim 1, wherein: The metal plate (1) further includes a metal mesh frame (104), a polyester mesh (103) and a hot melt adhesive (102), the periphery of the metal mesh (101) is fixedly provided with the polyester mesh (103) through the hot melt adhesive (102), and the periphery of the polyester mesh (103) is fixedly provided with the metal mesh frame (104).