PLA (polylactide resin) is a bioplastic that has found some product applications and that seems to be an extrudable material of growing interest. Any polymer that is made from a renewable resource and is degradable and/or environmentally friendly can gain favor in some markets, especially if it can be processed on existing machinery. This presentation will discuss the requirements for efficiently extruding PLA on a single-screw extruder with optimum screw design and processing conditions. Different sizes of extruders will be considered.