screenwashing

Screenwashing is the process of cleaning and reclaiming screens used in screen printing and related crafts. The primary goal is to remove inks, residual emulsion, and other chemicals from the mesh so the screen can be reused for future prints. It is a routine step in studio workflows and industrial sign-making, helping to maintain image quality and extend screen life.

In a typical screenwashing workflow, printed screens are first pre-rinsed to remove excess ink. The screen is then treated with cleaners or emulsion removers to break down inks and the stencil material. Depending on the setup, operators may use hand scrubbing with a stiff brush, a washing station, or a pressure washer to aid the removal process. After cleaning, the screen is thoroughly rinsed to remove all residues and allowed to dry. If the goal is full reclamation, the old emulsion is stripped and the screen is prepared for re-coating with fresh emulsion before imaging again.

Materials and equipment commonly involved include water-based screen cleaners, degreasers, emulsion removers, soft brushes, squeegees, and sometimes pressure-washing equipment. Screens are typically made from polyester or nylon meshes, and the cleaning method may vary with mesh count and the type of inks or emulsions used. Proper handling and disposal of cleaning solutions are important, as many solvents and detergents require containment and environmentally responsible disposal.

Safety and environmental considerations emphasize ventilation, gloves, and eye protection when handling cleaners and solvents. Waste from screenwashing should be collected and disposed of according to local regulations, with preference for low-toxicity or biodegradable cleaners when available.