In practice, many friends who are new to polyester mesh will call it mesh thickness. The thickness of the silk screen is related to the mesh number of the mesh, that is, the hole size of the mesh. If your 0.5 refers to MM, in addition to selecting a low mesh, you need to print a thick version on the copy. Without calculating the fineness, the thickest can choose 25 mesh screen, the lithography can also reach 0.5
There are two ways to adjust the printing thickness: 1. How many times is the photoresist applied (disadvantage: the resistance to printing is not high). 2. According to the specifications
of the polyester mesh currently used, select a thick wire diameter (depending
on the specifications you use).
Pay attention to the choice of polyester mesh before use. High mesh yellow plain woven polyester screen is a necessary condition for high precision screen printing plate. The yellow color is to reduce the diffuse reflection of the exposure light when printing, and the flat woven mesh can form a thinner screen, which is convenient for high-key and low-key layer reproduction. For the same mesh, there are multiple wire diameters to choose from. It should be easy to break the net. The ratio of the mesh number of the screen to the film screen line is 3.5: 1. If the screen line is 120 lines / inch, a screen of 420 mesh should be selected.
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