Activity Generation on Single Wire Tables, 2003 Spring Technical Conference Proceedings
For a number of years, papermakers have known that it is important to generate good “activity” on the table in order to produce a good quality product with good formation. However, little has been done on a fundamental level to understand this phenomenon. In this paper, a model is proposed to predict the activity level based on the local curvature of the wire. The results depend on the stock layer thickness, fluid
properties, and the local curvature of the wire. When the conditions are sufficient for instabilities to grow, columns of fluid are predicted to erupt from the surface. The size of these columns are related to the size of
the drops that would be formed if these columns. Predictions are compared to actual mill results. The time for the drops to form and their size are predicted by the model.
Activity Generation on Single Wire Tables, 2003 Spring Technical Conference Proceedings