Rotary screen printing is a development of flat bed screen printing that allows for continuous printing of wallpaper up to 3000 meters long. It uses a cylindrical mesh screen that is coated with a photopolymer to create the design areas that will not allow ink to pass through. The screen rotates through multiple print stations to apply different colored inks that must fully dry before reaching the next station. Rotary screen printing is cheaper than flat bed screen printing due to it being a continuous production process.