THE EFFECT OF EXTRUSION MACHINE TEMPERATURE ON MECHANICAL PROPERTIES OF FILAMENT PRODUCED FROM RECYCLED PLA

Fused Deposition Modelling (FDM) technology often known as 3D printing, is the most frequently used in additive manufacturing technology for polymeric material and has a wide range of application in numerous industries. In this method, the product is created by heating thermoplastic filament, extruding it through a nozzle and layer by layer depositing on the build plate of 3D printer. Also in making 3D printing product, it usually requires support which is the backbone of a 3D printing product and usually those things are would be discarded and turns the filament into waste. The research is to study the effect of extruding temperature on recycled PLA filament on mechanical properties. The experiment result shows that recycled PLA filament with extruding temperature of 170˚C, 175˚C, and 180˚C has UTS value 61.3 MPa, 64.4 MPa, 42.9 MPa respectively, compared to commercial PLA filament has UTS value of 76.9 MPa. It can be observed that the trend is decreasing, the UTS value of recycled PLA filament at 170˚C, 175˚C, and 180˚C decreased from commercial PLA filament about 20.2%, 16.2%, and 39.5%, then it can be concluded that the best temperature for making recycled PLA filament and has strength closes to commercial PLA filament is 175˚C. So it produces good diameter of the filament. The optimum setting for printing the filament is at 190˚C it produces the smoothest result of the object wall compared to the other two parameters.