Special Solutions and Special Lines


This machine type is used in the production of plastic granulate. Strands are extruded from powdered raw materials or recycled plastic, which are then crushed in a further production step. The resulting granulate is then the raw material for other plastics processing machines.

SIEBE Engineering supplies customized extruders for this application and, if required, also adapts them to the respective granulating line. 


In contrast to conventional extrusion processes, hot melt extrusion is characterized by an intermittent mode of operation. High-dynamic drives are required to compensate for the strong pressure fluctuations when opening or closing the application valve. 


This system component was designed and built by our project team to separate sheathed fluorescent tubes from the extruded strand in a continuous process. This is another example that demonstrates our ability to develop, implement and operationalize custom solutions.