Krüss will be showcasing the Stood-up Drop, a novel method for capturing the dewetting of water on pretreated, coated, or cleansed surfaces. The recorded receding angle, which is otherwise hard to measure, can then be used for quality tests. The measuring procedure is repeatable and results are digitally documented. As no harmful substances are involved, it is also safer than using test inks with overlapping applications.
Measuring the receding angle has the potential to supplement or even replace other test methods for surfaces. The measurement correlates well with many pretreatment parameters, such as for corona, plasma, and flame treatment, but also with the results of common test methods such as moisture vapour transmission rate (MVTR) to quantify moisture protection and breathability.
