During the screenprinting process, ink is pushed through a screen onto the chosen material, which has been partly sealed, either through manual means or by a photo-mechanical process whereby the area meant to be printed receives ink. For every color intended to be applied, a separate screen has to be used with a different area blocked out each time. The artists must then wait for the ink to dry. This process is sometimes helped along with the use of an electric fan before they can apply the next color.
Silkscreen printing is used for a variety of purposes, both artistic and commercial. Artists have been using the process since the early -1930s. Promotional materials such as posters and stickers are commonly made using the silkscreen process because of the fairly low cost involved. Silk screens are generally thought to be more artistic than commercial printing, as they are done mostly by hand. Many clothing companies silkscreen products such as T-shirts, sweatshirts and baseball caps. Printing companies often still use the silkscreen process to make signage and banners for other businesses.