PEMBUATAN PLASTIK DENGAN PENAMBAHAN PLASTIK DAUR ULANG MENGGUNAKAN PROSES INJECTION MOLDING

Abstract

Plastic is a polymer that has unique properties and remarkable. Plastic waste is waste material made of plastic that are not used and no longer useful for human life. The research method used is the Taguchi method. The final results of this study indicate that the addition of recycled plastic is very influential on the tensile strength of molded plastic. It is known that the composition factors and temperature factors negatively affect tensile strength resulting in the injection molding process. The addition of recycled plastic composition tends to lower the tensile strength of the plastic, this is due to the elasticity of recycled plastic has decreased. High temperatures can cause shrinkage in molded plastic. Changes in pressure exerted not give any difference in tensile strength. Optimization of the response generated by Minitab software shows that the highest tensile strength of 204,5 psi plastic, resulting in the injection molding process conditions with a composition of 0% (recycling), a temperature of 180 ̊C and a pressure of 6.6 bar.