Screw Barrel For Injection Moulding Machine

The Screw Barrel for an injection moulding machine is the core plasticizing unit, typically a high-grade alloy steel component where the screw, with its distinct L/D ratio (Length-to-Diameter), rotates inside the electrically heated barrel to melt and homogenize plastic pellets through mechanical shear and conduction, thereby creating a uniform melt pressure and volume for precise, high-speed injection, with dimensions (like diameter and length) critically selected based on the specific polymer material and shot size required for the production application.