Small,Energy-Saving Computers from New Source

摘要

R&D firm Omachron Plastics Inc.,Pontypool,Ont.,tias launched its first commercial extrusion equipment,including a modular extruder line based on new screw,barrel and feed designs.They combine low-shear,high-mix,low-pressure melt handling with high-precision,closed-loop computer control driven by high-accuracy temperature- and pressure-measure-ment subsystems.The result is a compact machine that reportedly uses up to 95% less energy/lb of material processed and can typically achieve a dimensionally stable product within 20 min of being turned on,thereby minimizing the expense of startup and product changeover.Atypical 5-hp system with the unique auto-start sequence can be purged between colors with 10 to 20 lb of material,and startup also typically requires 10-20 lb of material to make dimensionally stable product.