Study and Construction of a Plastic Recycling Injection Manual Press

In order to contribute to the fight against environmental pollution due to plastic packaging, a prototype extruder was designed and produced from an existing press. To carry out this project, we first carried out a study of the characteristics of the different organic polymers from which we selected High Density PolyEthylene (HDPE) as a material to recycle. Internal and external functional analyzes allowed us to characterize and prioritize service functions. After having determined the technological solutions by deploying the FAST (Functional Analysis System Technic) method, we proceeded to dimension the mechanical and electrical elements. The volume of the feed hopper is 841486.54 mm3 and can support a load of 0.7936 Kg, the pressure of the injection cylinder was evaluated at 174 bars, the force of the piston was evaluated at 37.14 N, the force of withdrawal of the cylinder is 29.3N. The barrel is a cylindrical tube measuring 34×26 and 530 mm in length. The material used to make most of the parts is stainless steel for its good resistance and its conductivity coefficient, which optimizes its thermal diffusivity. Digital modeling was done using SolidWorks software. Creating the prototype of the plastic extruder cost around 150,000 XAF.