Cascade injection is a form of sequential valve gating operation in mould during injection. In certain hot runner molding applications, optimum part filling is achieved using a valve gate controller to open each individual valve gates in a staggered sequence, thus creating a cascade progression of the melt's flow in order to fill the mold cavity. Cascade fill method is primarily used to create high quality plastic parts without weld lines, for large area components even clamp tonnage can be reduced. SMI offers Cascade Injection (Sequence valve gating) optional interface for our injection moulding machine.