Material development

Diffuser sleeve
Diffuser sleeve

The diffusers’ durability and functionality significantly determine the purification efficiency of a waste water treatment plant. Thus, we develop the materials for our diffuser membranes on our own. In our in-house laboratory our polymer engineers test waste water resistant elastomer and polyurethane materials. The combination of the raw material is optimized for various types of waste water. In the last 40 years we primarily developed specific membrane materials for numerous different types of industrial waste water:


  • EPDM for most domestic waste water in municipal treatment plants
  • Nitrile and Urethane for high durability and efficiency in oily waste water applications
  • Silicone based compounds for high temperature resistance and specific industrial facilities
  • Fluoro- and other specialty polymers for exceptional treatment processes

Our mixing facility automatically weighs up the raw materials. Internal mixers and rolling mills blend and homogenize the mixture. As a result, excellent and quality supervised basic material is available for further extrusion and injection moulding processes.