The twin-screw extruder has higher mixing efficiency and plasticization capability compared to the single-screw extruder when producing PLAP (polylactic acid) sheets. The twin-screw structure allows for a more uniform dispersion and mixing of materials, effectively reducing melt temperature and improving product quality. Additionally, its strong shear force and better heat exchange ability help minimize degradation, ensuring the stability and performance of the material. These advantages make the twin-screw extruder superior in the uniformity and physical properties of the sheets.