1.reasonable in structure; 2.stable in performance; 3.good in expansion effect. 1.1 Working PrincipleHeat is produced with the functions of kneading, friction between the spiral shaft and inner wall of the expander, meanwhile eject in steam to increase flake temperature. Cell tissue of oilseed is destroyed completely inside the Expander. When the oilseed is extruded out of the expander, high ...