Silk screen printing plate should have a certain gap between substrates is determined by the characteristic of silk screen printing office.
Silk screen printing is silk screen version of the base, silk screen tied on the net frame, when the screen in a state when a certain level of sag.Especially in the printing process, sag value will increase, in order to make the substrates at the time of scrapping printing at the end of the stick to ensure the quality of printing ink, screen plate must leave the lowest part of the substrates.In screen printing scraper mobility line contact with silk screen printing, silk screen plate with the scraping board in prepress and post-press can't contact with the substrates, especially the silk screen plate with scraper movement left substrates, if has not left before and after the silk screen printing in the printing ink graphic part will appear to penetration and diffusion caused by line size expansion, the dimensional precision printing fell, the distortion of substrates.
Screen to have a certain space between the plate and substrates, it also has close relationship with substrates movement forms, substrates when printing, especially in the molding surface (such as container) printing, printing substrates at the time of printing to do circular motion.Have certain gap not cause substrates by deformation phenomenon such as fuzzy or lines.
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