Bilfinger OKI Isoliertechnik GmbH

Sound reducing bonnets

Sound absorbing bonnets

The sound-absorbing bonnets of Bilfinger OKI Isoliertechnik GmbH are produced individually for each plant. The accuracy of fit is very important. Moreover, if requested or required, our bonnets also have forced ventilation with fan control, illumination, heating and electrical system; in addition they are fitted with valves, glazing, special doors - folding or sliding doors, if and when required - and sound-absorbing material inlets and/or outlets.

Range of application:

  • Primary Sound protection: directly on machines
  • Secondary Sound protection: Silencer, soundabsorbing bonnets, sound reducing walls, sound reducing insulation
  • Tertiary Protection: PSE (Personal Safety equipment)
  • Insulation  ≠ absorption
    • Insulation
      - With an insulation the direction of  sound energy will be changed by reflexion.
    • Absorption
      - With an absorption some noise will be transformed into another type of energy – acoustic energy will be transformed into thermal energy.