Patent ID: 7841856
Filing Date: 2010-11-30
Classification: B29C

Abstract:
1. Injection system for molds of plastic material containers, comprising a nozzle having a closing rod and an outlet the rod having a first end where an actuator for moving said rod acts, the rod having a second end, suitable for acting as a valve for closing the nozzle outlet, passing through a hot runner channel for the passage of molten plastic material to be injected, a first chamber formed inside a thrust bearing and surrounding said closing rod in an intermediate position between the two ends thereof, provided with at least one inlet channel and at least one outlet channel for a pressurized fluid, the said channels being arranged in positions so as to generate a turbulent flow of the fluid inside the first chamber the effect of which is to produce a suction effect of any particles contained in said first chamber and said first chamber is arranged between a hot part comprising a hot chamber and a cold part comprising the first end of the rod whereby the first chamber acts as a thermal barrier between the hot part and the cold part.