Flat screen printing machine is a type of printing equipment used to print designs onto flat surfaces such as paper, plastic, glass, metal, and fabric. It works by placing the substrate (the material to be printed on) onto the printing bed or table, and a screen or stencil with the desired design is placed on top of the substrate. Ink is then applied onto the screen, and a squeegee is used to push the ink through the mesh and onto the substrate, creating the printed design. Flat screen printing machines are commonly used in industries such as textile, packaging, and electronics.