UV SCREEN COATINGS
In screen printing applications, viscosity control and foam management are critical rheological parameters. Foam generation, particularly in automatic screen printing systems operating at high cycle speeds, can lead to defects such as pinholes, surface irregularities, and inconsistent film formation. Therefore, Process stability and homogeneous distribution are important.
Additionally, the required wet film thickness varies depending on the application, leading to the use of different screen mesh counts and emulsion thicknesses. These variations directly influence ink/varnish transfer and shear conditions. As a result, the viscosity profile must be carefully adjusted—typically exhibiting controlled shear-thinning behavior—to achieve optimal flow, leveling, and edge definition without compromising print resolution.