Profile: Spirex Corp. design & manufacture complete plasticating systems, including screws, front-end components, and single barrels. We offer plasticating systems which include resin packaging system with ABS, PET, PC, PVC, nylon, polyolefin, polystyrene & LSR resins and process packages comprising custom molding, mixing, twinshot molding, long glass fiber retention, reduced shear, improved wear & improved feeding. Our spirex optimizer offers a simple way to analyze your injection molding process. We also offer auto-shut, FTR, F-LOC, sliding ring, poly-check and QSO valves. Our MeltPro™ parallel barrier is designed to separate the solids bed from the melt pool and expose the solids plug to the barrel more effectively than a compression screw, thereby deliver a quality melt at rates 10-20% higher than a GP compression screw design.