The injection blow molding machine consists of an extruder barrel and screw assembly which melts the polymer. The molten polymer is then fed into a manifold where it is injected thru nozzles into a hollow; heated mold. The mold opens and the core rod is rotated and clamped into the hollow chilled blow mold. The core rod then opens and allows compressed air into the mold, which inflates it to the finished shape.

After cooling, the mold opens and the core rod is rotated to eject the finished object. Injection Blow molding produces bottles of superior visual and dimensional quality compared to extrusion blow molding. This process is ideal for both narrow and wide-mouth containers.