Twin screw testing Inflating Extruder This equipments is a kind of multifunction extruder that combines the peculiarity of various single and double screw extruders and can meet different craft requirements .It can adjust conveniently water ,pressure ,temperature ,rotate speed etc. parameters on process of extruding and slenderness ratio solve the difficulty of the combination of theory and the practice in teaching and science study .It changes the actuality of controlling by experience .It has received a lot of praise of colleges and science study units.