Backing Cloth

A support mesh is a coarse, mechanically robust fabric that serves as a carrier and reinforcement layer for finer filter layers. In composite filters, the filtering layer, which often has very fine and fragile structures, is combined with a support mesh to protect the entire element from mechanical damage and to distribute pressure evenly. The support mesh has a high open area so that it does not restrict flow and is made of stainless steel, nickel alloys, polyester, polypropylene, or fiberglass, depending on the application.
In pleated cartridges, the mesh supports the pleats and prevents them from collapsing or deforming under differential pressure. In sintered laminates, the support mesh ensures that multiple layers remain in position during sintering. For high-temperature filtration, heat-resistant materials such as Inconel, Hastelloy, or ceramic fabrics are used. The choice of support mesh influences flexibility, bending fatigue resistance, and the service life of the filter element.
GKD offers a wide range of support meshes that can be customized in mesh size, wire diameter, and weave type to meet the requirements of each composite. By combining them with finer meshes, nonwovens, or membranes, robust filter media are created that withstand high pressure and temperature loads while enabling precise filtration.