Breakthrough in filter mesh development

With regard to filter meshes, the bubble point test has been the standard for many years for quality control and quality assurance. It is used to determine the diameter of the largest pore in a filter medium. This is done by translating the pressure value measured in a laboratory test into a pore diameter value using a predefined capillary pressure constant. To get an absolute value for the diameter of the largest pore, time-consuming screenings were always necessary. Now, through the simulation of the bubble point test and the application of capillary pressure constants determined from the simulation, GKD has found a method with which the maximum pore size for all standard woven filter meshes can be precisely established in no time at all. As international technology leader for woven filter media we use these “Computational Fluid Dynamics” (CFD) tools for more than just quality control. The method is also uniquely suitable for purposeful development of new precision filter meshes or for application-specific adjustment of existing woven filter mesh types to meet customer-specified bubble point values.