Robert F. Dray is the founder and owner of R. Dray Mfg. Inc., and the founder of Feed Screws Inc. in 1967. A screw of ?general-purpose? design is purported to have the ability to process a wide range ...
At the heart of the cell are four compact single-screw extruders, which enable additive manufacturing based on standard granulates and are guided by industrial robots. Here, the spatial degrees of ...