Plastic injection molding is one of the most widely used methods of producing plastic parts, which allows for the rapid, accurate, and mass production of parts of various shapes and sizes. After entering the extruder of the injection molding machine, the polymer granules are melted and uniformed under heat and shear, and then injected into the mold at high pressure. After cooling, the mold is opened and the part is ejected. The quality of the final product depends on the selection of raw materials, mold design, and precise control of process temperature and pressure.