Profile: Glycon Corp. is in the business of design and manufacturing of screws, barrels, shut-off valves and other meltstream solutions for injection molding, extrusion and blowmolding. We help plastic processors increase material throughput, shorten cycle time, improve mixing of color and additives. Feedscrews can be rebuilt to match original performance specifications. Barrels can be resleeved to original dimensions. Other components, like our QSO® non-return valve, can also be rebuilt.