Injection Molding

Injection molding is a blow molding process that is used to create hollow plastic or glass containers in large quantities. The process begins by having the polymer injection molded onto a core pin. The core pin rotates to a blow molding station to cool. The polymer is melted by an extruder barrel and screw assembly and is then fed into a hot runner manifold. The molten polymer is then injected into a heated cavity and core pin.

The heated cavity forms the outer shape of the forming polymer and is clamped around a core rod which then forms the interior shape. The preformed mold opens then the core rod rotates and clamps onto the chilled blow mold. Compressed air then flows into the preform through the end of the core rod which inflates the preform into its finished shape.