Screw Extrusion: — Science And TechnologyBeyond plastics, screw extrusion technology is vital in the (for snacks and pasta) and the pharmaceutical industry (for hot-melt extrusion of medications). Its ability to run continuously makes it one of the most efficient manufacturing processes in existence. At its simplest, an extruder consists of a rotating screw housed tightly within a heated cylindrical barrel. As the screw turns, it performs three primary functions: Drawing material from a hopper into the barrel. Screw Extrusion: Science and Technology Generating the high pressure necessary to force the melt through a shaping die. The Three Functional Zones Beyond plastics, screw extrusion technology is vital in |