JWELL machinery's first one step degradable plastic sheet production line has been successfully started up. It uses PET special structure rollers group so that the cooling efficiency is greatly improved, thereby increasing the output, and improving the toughness and transparency of the product. One-step extrusion techniques (combining compounding and product extrusion together) have been developed to minimize the decomposition of polyesters during thermal processing. Now PLA extruded sheets produced by PLA sheet extrusion line can be widely used in vacuum forming fields.