The extruder barrel is a long cylindrical metal tube used in plastic extrusion processes. It is equipped with one or more screws, which rotate and push the plastic material into the barrel, generating pressure and heat, melting the plastic and forcing it through the mold. The extruder barrel is usually made of steel and can be heated to maintain a consistent temperature during the extrusion process.
The liner of the extruder is a component tightly installed around the screw inside the extruder barrel. It helps to form a seal and prevent plastic leakage from the extruder. The liner is usually made of wear-resistant materials such as ceramics or hard alloys, and can withstand the high temperature and pressure of plastic extrusion. The liner can also be designed as a cone to help compress and melt plastic material as it moves through the extruder barrel.
Overall, the extruder barrel and liner are key components of plastic extrusion machinery. They work together to generate the necessary heat, pressure, and friction to melt and shape plastic materials into the desired shape.
