Machines for plasticizing synthetics, machines for agglomerating plastics, machines for comminuting plastics, machines for granulating plastics, extruders for plastics and components for extruders, namely, extruder screws, machines for recycling treatment of plastics and for treating waste, in particular plastic waste, biomasses or household waste; machines for filtering plastic melts, plastic melt filters, degassing units, filtering devices for plastic melts and components therefor, namely, ...