Technology for obtaining a filament for 3D printing from recycled polyethylene terephthalate
The possibility of obtaining a filament for 3D printing from plastic bottles based on polyethylene terephthalate is investigated. A preliminary heat treatment of the material is proposed, which allows obtaining a powder material with minimal energy consumption for dispersion. The temperature regime of material processing on an extrusion line based on a single-screw extruder with subsequent cooling of the melt before winding on coils is determined. Comparative strength tests of test samples based on the obtained material and commercial PETG were made.