Screw and barrel are the core components of plastic processing machinery like extruders and injection molding machines, which work together to melt, mix, and transport plastic materials. The screw, a helical rod, rotates inside the barrel, a heated cylindrical chamber, to push, compress, and homogenize the material before it's shaped into a product. The design of the screw, including its zones for feeding, compression, and metering, is crucial for controlling the process and the final product quality.
















