Plastic forming process where a plastic melt is pressed through a die to create an axially symmetric profile. 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 pushed through a cold die [4] where it is formed and solidified to an axially symmetric profile. Extrusion Advantages and disadvantages In comparison with alternative methods Low cost, better flexibility Consistent cross section Allows easy changes after extrusion process Continuous process No actual length limit Significantly dimension deviation due to expansion Limited types of products can be made
