This machine is used for mixing and kneading raw rubber,synthetic rubber,thermoplastics or EVA with chemicals into even materials.The evenmaterials can be fed to calender ,hot presses or other processing machinery for making rubber or plastic products.It adopts hollow center groove roller or drilling hole smooth roller against difference using scope as mixing,refining or press pieces etc.This machine can be installed stock blender according to customer’s request to decrease the labor strength,also equipped with safety device.