Plastic forming process where the plastic pellets are fed in and melted in a container with a rotating screw and pressed into a mold. Beskrivning The process Plastic pellets [1] are supplied via a hopper into a rotating screw [2] whose spiral shape moves the pellet forward through a heated chamber [3].The pellets are heated gradually and turns into a homogeneous plastic melt as it approaches the end of the helical screw. The molten mass is pressed into a mold [4] as the entire screw is pushed forward by an applied pressing force. After the mass solidified the mold halves are separated and the part is removed using ejector pins [5]. Injection molding Process photos Process films Advantages and disadvantages In comparison with alternative methods Flexible selection of materials Low cost of labor Complex shapes Low wastage Little or almost no need for subsequent processing High investment costs for utilities Difficult to calculate the exact cost of the process
