More performance is expected today of auxiliary equipment for molding and extrusion, Responding to the pressures from the market for quality, ease of material changes, and speed, the auxiliaries have been forced to expand their functional range. Indeed, the term ＇＇auxiliary equipment＇＇ is itself becoming a misnomer. The traditional use of the words ＇＇primary＇＇ and ＇＇secondary＇＇ to categorize the components of a molding process is no longer valid, All parts of the system-the molding machine, feeders, temperature controllers, chillers, conveyors, and so on-must function together precisely.