[Technical Class] Screen Printing Of Cosmetic Packaging

[Technical Course] Screen printing of cosmetic packaging

Screen printing is composed of five main elements, which are screen printing plate, squeegee, ink, printing table, and substrate.

Basic Principles of Screen Printing

Use the screen printing plate to print with the ink through the mesh of the graphic part and the mesh of the non-graphic part, not through the ink.

When printing, pour the prepared ink on one end of the screen printing plate and use a scraper to move the ink part on the screen printing plate horizontally toward the other end of the screen printing plate with a certain pressure (the movement accuracy is determined by the gear spacing). The ink is squeezed from the mesh of the graphic part to the substrate by the squeegee while it is moving. Because of the viscosity of the ink, the imprint is fixed within a certain range. During the printing process, the squeegee is always in line contact with the screen printing plate and the substrate, while other parts of the screen printing plate are separated from the substrate so that the ink and the screen will break and stay on the surface of the substrate. When the squeegee is scraped across the entire layout, it is lifted, and the screen printing plate is lifted at the same time, and the ink is scraped back to the initial position, so far is a printing stroke.