Heated Sprue Bushing Assemblies Refine Resin Processing for Injection Molding Applications

PCS Company’s new 0.500- and 0.750-inch integrally heated sprue bushing assemblies for injection molding applications provide heat transfer ability when processing a wide range of commodity resins in small-to-medium volumes.

With a streamlined flow channel that terminates in a reverse-taper gate, these assemblies provide minimum pressure loss and enable rapid gate freeze. The integrally heated design features a replaceable thermocouple located close to the flow channel to optimize processing conditions for all thermoplastics.

The heated sprue bushing assemblies are available in three flow diameters, two head styles and two gate styles to suit a broad range of applications. A standard sprue gate is suitable for most applications (press fit areas are held to +/- .0005 inch) while an extra stock sprue gate is available for applications requiring machining of the gate area for runner profiles, part contours or bushing height adjustments.

These assemblies also feature fully sealed construction to protect heater and thermocouple, H-13 construction and a maximum operating temperature of 600 degrees F using insulating washers.