Screen printing plate manufacturing method for improving screen printing plate strength
By using laser cutting technology to partially remove mesh knots within the printing channel of the screen while retaining some warp or weft threads, the problems of insufficient screen strength and high silver paste usage are solved. This results in improved screen strength and reduced silver paste usage, thereby enhancing the market competitiveness of the screen.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-11
- Publication Date
- 2026-03-31
AI Technical Summary
Existing solar screen printing stencils suffer from problems during the printing process, such as mesh clumping leading to high silver paste consumption and insufficient stencil strength, which affects printing costs and lifespan.
Laser cutting technology is used to cut some warp or weft threads in the printing channel of the mesh fabric, leaving some warp or weft threads, forming a printing channel with only a partial mesh knot. After pressing a PI film onto the mesh fabric, laser cutting is performed to form the printed pattern.
It improves the strength of the screen printing plate, reduces the amount of silver paste used, and enhances the market competitiveness of the screen printing plate and the opening rate in the printing process.
Smart Images
Figure CN121756723A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of solar screen printing, specifically to a method for making a screen for improving screen strength. Background Technology
[0002] Existing solar screen printing methods all use tungsten wire mesh for printing. Tungsten wire mesh is made by threading several tungsten wires together through warp and weft threads, then rolling them to create a mesh with knots. The mesh is then cut to a predetermined area and stretched onto a frame. A PI film is then pressed onto the mesh, and the corresponding printed pattern is formed on the PI film using laser cutting. In this process, because the mesh count is fixed and the knots exist in the corresponding areas of the printed pattern, a relatively large amount of silver paste is required, resulting in high printing costs. The existing method of completely removing the knots in the printed pattern area before pressing the PI film and then laser cutting to form the printed pattern reduces the strength of the screen, thus shortening its lifespan during screen printing. Therefore, there is an urgent need to develop a screen manufacturing method that can both improve screen strength and reduce silver paste consumption. Summary of the Invention
[0003] To address the aforementioned problems, this invention provides a screen printing method for improving screen printing strength. This method increases screen printing strength while reducing the amount of silver paste used, thereby enhancing the market competitiveness of the screen printing.
[0004] A method for making a screen printing plate to improve its strength is characterized in that: after the screen is stretched onto the screen frame, the warp and weft sections corresponding to the printing channel are cut in a step-by-step manner by laser to obtain a printing channel with only a portion of the warp or weft remaining; then, a PI film is pressed onto the screen, and then the corresponding printing pattern is formed on the PI film by laser cutting.
[0005] Its further feature is that it includes the following steps: S1 cuts the mesh fabric, and the mesh fabric is cut to obtain the set shape; S2 netting involves laying the netting on a net frame and then performing the netting operation. S3 laser removes the tungsten wire mesh knots in the printing channel, thereby obtaining a printing channel with only a portion of the warp or weft threads remaining. S4 presses the PI film, pressing the PI film onto the upper surface of the mesh fabric; S5 laser cutting obtains the printed pattern, which is obtained by laser cutting on the PI film.
[0006] Its further characteristic is: In step S3, the specific operation process is as follows; S301, the printing channel is pre-defined to include a surface area with four sets of weft widths. Along the surface area of the printing channel, the parts corresponding to the weft and the warp mesh of the two central areas of the four sets of weft are all laser-cut. S302, then the inner edges of the mesh corresponding to the latitude and longitude lines on both sides are cut by skipping steps, so that one of the three longitude lines arranged sequentially in the area corresponding to the printing channel is removed. S303. All the central area latitude lines in the printing channel are removed, and only the last two of several sets of three meridian lines are retained in sequence, so that the latitude line area of the entire printing channel completely covers the subsequent printed graphic area. Alternatively, in step S301, a printing channel is pre-defined to include a surface area with four sets of warp widths. Along the surface area of the printing channel, the portions corresponding to the warp and weft meshes in the two central areas of the four sets of warp are all laser-cut. S302, then the inner edges of the knots corresponding to the warp and weft lines on both sides are cut by skipping steps, so that one of the three weft lines arranged sequentially in the area corresponding to the printing channel is removed. S303. All the central area meridians within the printing channel are removed, leaving only the last two of several sets of three parallels arranged in sequence, so that the meridian area of the entire printing channel completely covers the subsequent printed graphic area.
[0007] Its further characteristic is: In step S4, the thickness of the PI film is 5μm to 8μm, and the hot pressing process parameters are: pressing at 180℃ to 210℃ and under a pressure of 30kg to 40kg for 25min to 35min. In step S5, the width region of the printed pattern obtained by laser cutting is located in the center region of the width of the corresponding printing channel.
[0008] After adopting this invention, the mesh is stretched after the screen frame, and the corresponding warp and weft portions in the printing channel are cut in a step-by-step manner by laser, thereby obtaining a printing channel with only a portion of the warp or weft remaining. It only cuts the entire area of the mesh knots in the printing channel, and then retains a portion of the warp or weft. Because some gold or weft threads are retained, the mesh in the entire printing channel still retains high strength. Moreover, since all the mesh knots in the printing channel are removed, and all the tungsten wires in one direction have been removed, the opening ratio in the printing process is large enough, which reduces the amount of silver paste used in the printing process. It improves the strength of the screen while reducing the amount of silver paste used, thereby improving the market competitiveness of the screen. Attached Figure Description
[0009] Figure 1This is a schematic diagram of the laser-cut printing channel corresponding to the mesh fabric in a specific embodiment of the present invention. Detailed Implementation
[0010] A method for improving screen printing strength: After the screen is stretched onto the screen frame, the warp and weft sections corresponding to the printing channels are cut in a step-by-step manner by laser to obtain printing channels with only a portion of the warp or weft remaining. Then, a PI film is pressed onto the screen and then the corresponding printing pattern is formed on the PI film by laser cutting.
[0011] It includes the following steps: S1 cuts the mesh fabric, and the mesh fabric is cut to obtain the set shape; S2 netting involves laying the netting on a net frame and then performing the netting operation. S3 laser removes the tungsten wire mesh knots in the printing channel, thereby obtaining a printing channel with only a portion of the warp or weft threads remaining. For specific embodiments, see Figure 1 The specific operating procedure is as follows; S301, the printing channel 10 is pre-set to include a surface area with the width of four sets of weft lines 1. Along the surface area of the printing channel 10, the parts corresponding to the weft lines 1 and the mesh of the warp lines 2 in the two central areas of the four sets of weft lines are all laser-cut. S302, then the inner edges of the mesh corresponding to the latitude line 1 and the longitude line 2 on both sides are cut by skipping steps, so that one of the three longitude lines 2 arranged sequentially in the area corresponding to the printing channel 10 is removed. S303, all the latitude lines 1 in the central area of the printing channel 10 are removed, and only the last two of the three meridian lines 2 arranged in sequence are retained, so that the latitude line 1 area of the entire printing channel 10 completely covers the subsequent printing graphic area. Alternatively, in another embodiment, step S301 involves pre-setting a printing channel comprising a surface area with four sets of warp widths. Along the surface area of the printing channel, the portions corresponding to the warp and weft meshes in the two central regions of the four sets of warp are all laser-cut. S302, then the inner edges of the knots corresponding to the warp and weft lines on both sides are cut by skipping steps, so that one of the three weft lines arranged sequentially in the area corresponding to the printing channel is removed. S303, all the warp lines in the central area of the printing channel are removed, and only the last two of several sets of three parallel lines are retained in sequence, so that the warp line area of the entire printing channel completely covers the subsequent printed graphic area.
[0012] S4 pressing PI film, pressing PI film onto the upper surface of the mesh fabric, the thickness of the PI film is 5μm~8μm, the hot pressing process parameters are 180℃~210℃ environment, 30kg~40kg pressure for 25min~35min; The S5 laser cutting process obtains the printed pattern on the PI film. The width area of the printed pattern obtained by laser cutting is located in the center area of the width of the corresponding printing channel. The laser cutting power only forms the corresponding groove on the PI film and does not affect the tungsten filament.
[0013] The principle is as follows: After the mesh is stretched onto the frame, the corresponding warp and weft sections in the printing channel are cut in a step-by-step manner using a laser, thereby obtaining a printing channel with only a portion of the warp or weft remaining. This process only cuts the entire mesh knots in the printing channel, leaving only a portion of the warp or weft. Because some warp or weft threads are retained, the mesh in the entire printing channel still retains high strength. Furthermore, since all the mesh knots in the printing channel are removed, and all the tungsten wires in one direction are removed, the opening ratio during the printing process is sufficiently large, thus reducing the amount of silver paste used. This increases the strength of the screen while reducing the amount of silver paste used, thereby improving the market competitiveness of the screen.
[0014] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0015] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A method for screen printing to improve screen printing strength, characterized in that: After the mesh is stretched onto the frame, the corresponding warp and weft sections in the printing channel are cut in a step-by-step manner using a laser to obtain a printing channel with only a portion of the warp or weft remaining. Then, a PI film is pressed onto the mesh, and the corresponding printed pattern is formed on the PI film by laser cutting.
2. The method for screen printing to improve screen printing strength according to claim 1, characterized in that, It includes the following steps: S1 cuts the mesh fabric, and the mesh fabric is cut to obtain the set shape; S2 netting involves laying the netting on a net frame and then performing the netting operation. S3 laser removes the tungsten wire mesh knots in the printing channel, thereby obtaining a printing channel with only a portion of the warp or weft threads remaining. S4 presses the PI film, pressing the PI film onto the upper surface of the mesh fabric; S5 laser cutting obtains the printed pattern, which is obtained by laser cutting on the PI film.
3. A method for screen printing to improve screen printing strength according to claim 2, characterized in that, In step S3, the specific operation process is as follows; S301, the printing channel is pre-defined to include a surface area with four sets of weft widths. Along the surface area of the printing channel, the parts corresponding to the weft and the warp mesh of the two central areas of the four sets of weft are all laser-cut. S302, then the inner edges of the mesh corresponding to the latitude and longitude lines on both sides are cut by skipping steps, so that one of the three longitude lines arranged sequentially in the area corresponding to the printing channel is removed. S303. All the central latitude lines in the printing channel area are removed, and only the last two of several sets of three meridian lines are retained in sequence, so that the latitude line area of the entire printing channel completely covers the subsequent printed graphic area.
4. A method for screen printing to improve screen printing strength according to claim 2, characterized in that, In step S3, the specific operation process is as follows: S301, a pre-defined printing channel includes a surface area with four sets of warp widths. Along the surface area of the printing channel, the corresponding portions of the warp and weft mesh corresponding to the two central areas of the four sets of warp are all laser-cut. S302, then the inner edges of the knots corresponding to the warp and weft lines on both sides are cut by skipping steps, so that one of the three weft lines arranged sequentially in the area corresponding to the printing channel is removed. S303. All the central area meridians within the printing channel are removed, leaving only the last two of several sets of three parallels arranged in sequence, so that the meridian area of the entire printing channel completely covers the subsequent printed graphic area.
5. A method for screen printing to improve screen printing strength according to claim 3 or 4, characterized in that: In step S4, the thickness of the PI film is 5μm to 8μm, and the hot pressing process parameters are: pressing at 180℃ to 210℃ and under a pressure of 30kg to 40kg for 25min to 35min.
6. A method for screen printing to improve screen printing strength according to claim 2, characterized in that: In step S5, the width region of the printed pattern obtained by laser cutting is located in the center region of the width of the corresponding printing channel.