Reducing the viscosity of water-based acrylic or vinyl coatings to facilitate their application through spray equipment is a necessary process. This adjustment modifies the consistency of the material, allowing it to atomize properly and produce a smooth, even finish when expelled from a sprayer. For example, a paint formulated for brush or roller application will generally require dilution before it can be effectively used in a spray gun.
The practice offers several advantages, including improved atomization, reduced clogging of spray nozzles, and a more uniform final coat. Historical context reveals that thinning agents have been used for many years in paint applications, evolving from simple solvents to more specialized additives designed to improve performance. Properly adjusted viscosity leads to efficient paint usage, a smoother finish, and reduced rework.
