What is the principle of screen printing?

Screen printing consists of five elements, namely screen printing plate, scraper scraper, ink, printing station and substrate.

Screen printing is the basic principle: the use of screen printing plate graphic part of the network through the ink, non-graphic part of the mesh impermeable ink for printing.

In the process of printing ink into the screen printing plate at one end, with a squeegee squeegee in the screen printing ink on the site to exert a certain pressure, while moving toward the other side of the screen printing plate. The ink is squeezed by the squeegee from the mesh of the graphic part onto the substrate during the movement. Due to the role of the viscosity of the ink so that the imprint fixed within a certain range, the printing process scraper is always in line with the screen printing plate and the substrate contact, the contact line with the scraper movement, the screen printing plate and the substrate To maintain a certain gap between the printing plate so that the printing plate by its own tension generated scraper reaction force, this reaction is called the resilience. As a result of the role of resilience, the screen printing plate and the substrate was only moving line contact, and other parts of the screen plate with the substrate from the state. The ink and screen rupture movement to ensure the printing size accuracy and to avoid rub dirty substrates. When the scraper scrape the entire layout after the lift, while the screen printing plate is also raised, and the ink scraped back to the initial position. This is a complete printing process.

screen printing principle of screen printing

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