The requirements of screen printing silicone for screen specifications are mainly reflected in the following aspects:
1. Selection of mesh number
The mesh number, that is, the number of holes or lines of the screen, the number of mesh lines per unit length, has an important influence on the printing effect of screen printing silicone. The selection of mesh number needs to be determined according to the accuracy and fineness of the printed pattern.
High-precision printing: If you need to print high-precision or fine patterns, you should choose a screen with a higher mesh number. Generally speaking, the mesh number of screen required for silicone printing is between 80 and 150, but the specific value may vary depending on printing requirements and ink characteristics. A screen with a higher mesh number can provide a more delicate printing effect, making the pattern edge clearer and the details richer.
Low-precision printing: For printed products with low requirements for pattern accuracy, you can choose a screen with a lower mesh number. This can increase printing speed and reduce printing costs.
2. Material and characteristics of screen
Material selection: The screen material should have good wear resistance, corrosion resistance, high temperature resistance and elasticity to adapt to the printing process of screen printing silicone. Common screen materials include nylon, polyester and stainless steel.
Feature requirements: The screen should have high tension, high precision and high stability to ensure uniform ink transfer and pattern accuracy during printing. At the same time, the screen should also have good antistatic properties to avoid static interference during printing.
3. Screen size and shape
Size selection: The size of the screen should be determined according to the specifications of the printing press and the size of the printed matter. Generally speaking, the size of the screen should be slightly larger than the size of the printed matter to ensure that the ink can fully cover the printing area.
Shape requirements: The shape of the screen is usually rectangular or square, but it can also be customized according to the shape of the printed matter. When choosing the screen shape, the adaptability of the printing press and printing efficiency should be considered.
4. Screen cleaning and maintenance
Cleaning requirements: Before printing, the screen should be thoroughly cleaned to remove oil, dust and other impurities. This helps to ensure uniform ink transfer and clarity of the printing effect.
Maintenance requirements: During use, the screen should be inspected and maintained regularly. If the screen is found to be damaged, deformed or blocked, it should be replaced or repaired in time.
In summary, the requirements of screen printing silicone for screen specifications include the selection of mesh count, screen material and characteristics, screen size and shape, and screen cleaning and maintenance. These requirements are intended to ensure the smooth progress of the printing process and the stability and consistency of printing quality.