The scrapers of the screen printing machine plays an important role in transferring the ink through the mesh to the substrate, whether it is printed by hand or mechanically. Scrapers include squeegees and ink blades, collectively referred to as scrapers.
When printing, pour the ink into one end of the screen printing machine, use a squeegee to apply a certain pressure on the ink part of the screen printing machine, and move to the other end at the same time. During the movement, the ink is squeezed from the mesh of the graphic part to the substrate by the squeegee. Due to the viscosity of the ink, the printing marks are fixed within a certain scale. During the printing process, the squeege is always in contact with the screen and the substrate, and the contact line moves with the squeegee.
The mesh frame of the screen printing machine produces a reaction force on the squeegee through its own tension, which is called the resilience. Due to the effect of resilience, the screen is in moving line contact with the substrate, and other parts of the screen are separated from the substrate. After the squeegee scrapes across the entire layout, it is lifted, and the mesh frame is also lifted. Then the ink is gently scraped back to the original position by ink blade. This is a screen printing process.
