In the glass screen printing products, often problems printing ink film edges appear jagged spikes (including incomplete or interrupted). There are many factors generated burrs, but mainly because the screen printed version of their own quality problems.
① Emulsion resolution is not high, resulting in fine lines, red or torn down hill now.
② inadequate exposure time or exposure time is too long, imaging is not adequate, is not neat the edge of screen printing graphic appears jagged. Good screen printing plate, the edges should be smooth graphics neat.
③ screen printing plate when the surface of light-sensitive adhesive coating uneven conduct printing, screen printing plate and Substrate is still there between the gap left vacant due to ink penetration, resulting in the edge of the printing ink glitch occurs.
④ printing process, since the film version of swelling occurred after contact with solvents, and different degrees of latitude and longitude to the expansion, making the surface uneven film version of the phenomenon of screen printing plates and Substrate contact surface partial gap appears, ink vacant infiltration, ink film there will be glitches.
