Run-off

In surface technology, the term “run-off” refers to a process in which liquids, coatings or other substances flow or drip off a surface. This process can occur both intentionally and unintentionally and plays an important role in various applications. Coating materials have a tendency to form runs, tears and curtains when coated, preferably on vertical surfaces

Intentional run-off often occurs in painting and coating processes where excess materials run off in a controlled manner to ensure a uniform coating. This can be achieved by using appropriate tools such as brushes, rollers or spray guns and by adjusting the viscosity and application rate of the coating. Controlled run-off makes it possible to achieve a uniform coating thickness and avoid overflows or drips.

However, unwanted run-off can also occur, especially if the surface has not been properly prepared or if the coating materials have not been correctly selected or applied. This can lead to unwanted drips, stains or imperfections that can affect the appearance and functionality of the surface.

Careful planning and implementation of the coating processes is required to prevent unwanted run-off. This includes thorough preparation of the surface by cleaning, degreasing and, if necessary, pre-treatment, as well as the selection of suitable coating materials and processes. The application technique also plays an important role, including the correct application speed, direction and quantity to achieve a uniform result.

In addition, special aids such as drip grids, drip trays or covers can be used to control run-off and prevent unwanted soiling. By observing these measures, high-quality surfaces with uniform coatings and an attractive appearance can be achieved.