Composite Filter Media

A composite filter medium is a filter element made up of multiple layers of different materials to combine their specific advantages. Typically, a fine filtering layer that performs the actual separation process is combined with a coarse support structure that ensures mechanical stability and supports flow. The layers can be bonded, needled, welded, or sintered.
Examples include laminate structures where microfiber nonwovens are pressed together with a metal or plastic mesh, or metallic sintered laminates made of several wire mesh layers. Composite media enable a graded pore structure: coarse pores on the raw side reduce initial pressure drop and allow high throughput, while fine pores deeper inside provide high separation efficiency. Depending on the application, chemically different layers can be combined to integrate hydrophilic, hydrophobic, oleophobic, or temperature-resistant properties.
Composite filter media are used in the chemical, food, automotive, and pharmaceutical industries as well as in water treatment. They are available as plates, cartridges, bags, or endless belts. GKD manufactures customized composite media in which the finest wire meshes are combined with robust support fabrics and optional nonwoven or membrane layers. This creates filter elements that withstand high pressure loads, provide precise filtration, and offer good cleanability and long service life.