Polyester meshs are now widely used due to their own wear resistance, durability, and the ability to print a wide range of objects. There are many problems that are often encountered in the printing process. What is the specific operation?
Since the polyester printing mesh is exposed to ultraviolet light, the ultraviolet light is reflected by the mixture of two colors of cyan and magenta in the color, that is, the yellow hue is lacking in black. When exposed, the yellow color of the purple plus mesh is superimposed into black, so the surface of the yellow screen (ie, the bottom of the emulsion layer) is not sensitive or less exposed, so there is no "back drying" phenomenon, and the resulting image has high definition. , will not produce vignette.In
order to strengthen the plate, improve the water resistance and solvent resistance, and prevent the ink from leaking between the screen and the frame at the time of printing, the edge of the image can be covered with a wide-width tape paper, and the mesh is sealed with a sealing glue or emulsion. The pinholes on the bond, the screen, and the openings that should not be present. For small stains on the pattern part and a small amount of photoresist that can remain, you can use a wide-band tape to stick the paper, or you can gently wipe it with cyclohexanone or alcohol, or you can gently click with a small needle to keep the screen. Transparent.
The above is a brief introduction to the knowledge of the polyester printing mesh proess. I hope I can give you your help!
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