74081432
Jul 23, 1990
plastic scrap recovery machines comprising hoppers, conveyors, grinders, extruders, and gravimetric and volumetric dispensers of fluent materials
Machinerygravimetric extrusion control systems comprising one or more weigh hopper assemblies, a controller, and one or more related input signal units for controlling monoextrusion and coextrusion processes
Electrical and Scientific Apparatus