Full colour posters, signs, stickers, garments and various other products, that can endure outdoor conditions, are created using the silkscreen printing process.
Screen printing is a method of print making in which a design is exposed onto a screen of polyester mesh to create a stencil.
Ink is forced through the mesh openings using a squeegee, and the stencil image is transferred onto the printing surface.
One colour is printed at a time so several screens can be used to produce a multicoloured image. The different colours are layered on top of each other and is left to dry before the next colour can be printed.
There are various terms used for what is essentially the same technique, e.g. silk screen-, screen-, and serigraph printing. Traditionally the process was called silkscreen printing because woven silk was used as a mesh prior to the invention of synthetic threads. Currently the most popular mesh in general use is made of polyester. The finer the weave the smaller the mesh opening. This is called the mesh-count and controls the ink flow onto the substrate as well as the detail of the stencil.