The basic principle of screen printing grids is to filter the ink directly through the grid using the graphic portion of the screen printing plate. The basic principle that some graphics meshes are impermeable to ink is printing.
The ink is poured onto one end of the screen printing plate during printing, and a certain pressure is applied to the ink portion of the screen printing plate by the squeegee blade while moving toward the other end of the screen printing plate. During the movement, the squeegee squeezes the ink from the mesh of the pattern portion onto the substrate. The imprint is fixed within a certain range due to the viscosity of the ink. During the printing process, the squeegee is always in line contact with the screen printing plate and the substrate, and due to the screen printing plate and the substrate, the contact line moves as the squeegee moves. A certain gap is maintained between them so that the screen printing plate generates a reaction force against the blade by its own tension at the time of printing, and the reaction force is called a resilience. Due to the elasticity, the screen printing plate and the substrate are only in moving line contact, and other portions of the screen printing plate are separated from the substrate. The ink and screen are broken and printed to ensure dimensional accuracy and avoid dirty substrates. When the scraper scrapes the entire layout, it is lifted and the frit is lifted and the ink is gently scraped back to the original position. This is a printing trip. The above is the principle of screen printing screen printing. If you need a friend, you can contact our business staff.
Post time: Dec-17-2019