Screen printing screen printing, printing technology, the performance requirements for the screen still have basic requirements.
1. The screen printing screen is best to have high tensile strength. When the screen is under tension, it can resist damage. In addition, the change in strength of the screen after moisture absorption should be small.
2. Good stability against temperature and humidity changes.
3, good resilience. Resilience refers to the stretch of the screen by a certain length (such as after elongation of 3%). When the
external force is released, its length recovery ability is called the elongation recovery degree. The larger the value, the better. After rebound, the edge after printing is clear.
4. Good resistance to chemicals.
5, see the project list for specific items.
Important steps Screen selection: Nylon mesh and polyester mesh are the more choices. The difference is the difference in heat resistance. . Nylon screen has poor heat resistance, and it is easy to produce thermoplastic deformation after heating, which makes the tension uneven and affects the screen printing quality. It is not suitable for high-temperature baking for the production of bonded stretched screens or screen templates. Polyester wire mesh has good heat resistance, stable size, and the pattern does not change greatly due to changes in temperature and humidity. In order to ensure the accuracy of screen printing graphics, the best choice is monofilament polyester screen.
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