A process for preparing a screen printing screen

Abstract

The application discloses a silk screen printing screen plate preparation process, which comprises the following steps: step 1, packaging adhesive tape is pasted between a screen frame and a screen film size; step 2, EVA sponge adhesive tape is pasted on the upper surface of the packaging adhesive tape in step 1, and a closed quadrilateral is formed around the screen film size; and step 3, Teflon adhesive tape is pasted on the edges of the four corners of the screen film size in step 1. The application can greatly prolong the service life of the screen plate, improve product quality and production efficiency, and reduce production cost by making local improvement without affecting the normal use of the original screen plate, and has the characteristics of simple process steps, low cost and strong practicability.

Description

Technical Field

[0001] The invention relates to the technical field of screen printing, and in particular to a preparation process of a screen printing screen printing plate. Background Art

[0002] At present, in the production process of photovoltaic glazed glass in China, most manufacturers use the screens provided by the screen manufacturers after a little preparation, without making any effort to improve the screens through other methods or technologies to extend the service life of the screens. Under normal use, the screens are scrapped after about 10,000 prints, and they have to be repeatedly repaired and used during use, which seriously affects the product quality and the continuity of the production line, and seriously restricts the line capacity and normal production quality.

[0003] Patent application CN201810972790.8 discloses a method for attaching a screen printing screen with tape and a screen printing screen, in which the screen is attached with tape, but the process steps are cumbersome, the structure is complex, the work intensity is high, the cost is high, and the practicality is poor. Summary of the Invention

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a preparation process for a screen printing screen. By utilizing the elasticity and flexibility of the sponge tape and the effect of the Teflon tape on the corners, the force of the scraper strip on the screen and the shear force of the glass edge on the screen are effectively reduced, thereby extending the service life of the screen, improving product quality, simplifying the production process, reducing work intensity, stabilizing production, and reducing the screen printing defect rate and production cost. The present invention has the characteristics of simple operation, low cost and strong practicality.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A preparation process for a screen printing screen comprises the following steps:

[0007] Step 1: Stick the packaging tape 4 between the screen frame 6 and the screen film size 2;

[0008] Step 2: Apply EVA sponge tape 3 to the upper surface of the packaging tape 4 in step 1, and form a closed quadrilateral around the size of the screen film;

[0009] Step 3: Apply Teflon tape 5 to the edges of the four corners of the screen film size 2 prepared in step 1.

[0010] The packaging tape 4 in step 1 is attached to the four sides of the screen film size 2.

[0011] The packaging tape 4 is attached to the area 1 mm to 3 mm away from the screen film size 2 .

[0012] The thickness of the EVA sponge tape 3 in step 2 is at least 1 mm greater than the thickness of the glass.

[0013] In step 2, the distance between the inner edge of the quadrilateral and the outer edge of the product is not less than 10 mm.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention cleverly utilizes the elasticity and flexibility of the sponge tape to alleviate the direct force of the scraper strip on the screen and the shear force of the glass edge on the screen. The process steps are simple, the production cost is low, the service life of the screen can be effectively extended, the use effect is good, the occurrence of defects in the screen printing process is reduced, the appearance of the backplane glazed glass is prevented, and qualified photovoltaic glass can be stably produced.

[0016] 2. The present invention can greatly extend the service life of the screen by making local preparations and improvements without affecting the normal use of the original screen, thereby improving product quality and production efficiency, reducing production costs, and is simple to operate and low-cost.

[0017] 3. After the prepared screen is put into use on the machine, the service life of the screen is increased from the original 10,000 prints to more than 40,000 prints, the yield rate and production capacity are greatly improved, the production cost is reduced, the workload of the process personnel is reduced, the work intensity is reduced, the effect is good, the practicability is strong, and the expected purpose is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Among them: 1-mesh; 2-screen film size; 3-EVA sponge tape; 4. Packaging tape; 5-Teflon tape; 6-screen frame. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below with reference to the accompanying drawings and examples.

[0021] The method relates to a process for preparing a screen on a screen printing screen in the production of solar photovoltaic back plate glass, so that qualified back plate glass can be smoothly produced in a screen printing process.

[0022] like Figure 1 As shown, a screen printing screen includes a screen frame 6, a screen cloth 1 is arranged in the screen frame 6, and a screen film size 2 is arranged on the screen cloth 1; the preparation process includes the following steps:

[0023] Step 1: Stick the packaging tape 4 between the screen frame 6 and the screen film size 2;

[0024] Step 2: Apply EVA sponge tape 3 to the upper surface of the packaging tape 4 in step 1, and form a closed quadrilateral around the size of the screen film;

[0025] Step 3: Stick Teflon tape 5 on the edges of the four corners of the screen film size 2 in step 1, that is, stick and protect the four corners of the screen film size 2 (the contact parts of the glass corners) along the 45° direction to reduce the wear of the glass corners on the screen.

[0026] The packaging tape 4 in step 1 is attached to the four sides of the screen film size 2.

[0027] The packaging tape 4 in step 1 is attached at a distance of 1 mm to 3 mm from the screen film size 2 on all sides, and the position can also be adjusted according to the specifications of different products.

[0028] The thickness of the EVA sponge tape 3 in step 2 is at least 1 mm greater than the thickness of the glass.

[0029] In step 2, the distance between the inner edge of the quadrilateral and the outer edge of the product is not less than 10 mm.

[0030] The on-site temperature is maintained at 25°C and the humidity is above 55RH. This process is a one-time solution. The screen is fully prepared before each use on the machine, and no repair is required until it is removed from the machine, effectively ensuring product quality and production capacity.

Claims

1. A process for preparing a screen printing screen, characterized in that: The following steps are involved: Step 1: Stick the packaging tape (4) between the screen frame (6) and the screen film size (2); stick the packaging tape (4) at a distance of 1mm-3mm from the screen film size (2); Step 2: Paste EVA sponge tape (3) on the upper surface of the packaging tape (4) in step 1, and form a closed quadrilateral around the screen film size (2); the thickness of the EVA sponge tape (3) is at least 1mm greater than the thickness of the glass; the distance between the inner edge of the quadrilateral and the outer edge of the product is not less than 10mm; Step 3: Stick Teflon tape (5) on the edges of the four corners of the screen film size (2) in step 1.

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