Multi-layer coextrusion composite PLA or starch sheets can be produced by coextrusion technology of multiple extruders, which is widely used in thermoforming, printing, hardware packaging, etc. * Equipped with precision distributor, uniform layering, adjustable proportion of each layer and digital control precision. * Inclined horizontal tabletting structure, which is more convenient to operate and maintain. * Roller independent power, linear speed and extruder speed synchronous closed-loop control. * The whole machine is controlled by PLC to realize automatic control of parameter setting, data operation, feedback, alarm and other functions. * Electrical control system and operating procedures are written by Kinwell.