Filter Medium

The filter medium is the core of every filtration process. It is a porous material through which a mixture of solids and fluid is passed to separate the undissolved particles. Filter media can be made of woven metal or plastic wires, nonwovens, membranes, sintered materials, or paper. Key properties include pore size and distribution, permeability, mechanical strength, and chemical resistance to the filtrate. Selection depends on the type of particles to be separated, the desired clarity of the filtrate, the temperature and pressure range, and the cleaning methods. At GKD, filter media are manufactured from precisely woven monofilaments. The high dimensional accuracy of the mesh ensures defined separation precision, while the smooth surface reduces residue buildup. Depending on the application, multilayer media can also be used: a coarse support mesh provides stability, while a fine protective layer performs the filtration function. Modern filter media are often functionalized, for example hydrophilic or oleophilic, to optimize wettability and separation properties. For applications in chemical, pharmaceutical, food technology, and environmental engineering, the right filter medium is crucial for filtration efficiency and operational safety.