Mainly used for a variety of aquatic products, pet and other pellet feed curing molding process (such as: float and sink of fish feed, frog feed, pellet suckling pig feed). In most cases, the material rich with starch and protein is cooked into a sticky dough or gelatinous dough. During the transform process, the material have a large physical and chemical changes, mainly is the results of starch and protein changes. When the material is extruded through molding holes at the end of machine cavity, make the dough material processed into a certain shape. Due to the large of propulsive force of screw inside cavity, the material have a huge pressure, when material is extruded from the molding holes, it instantly vaporized a large quantities moisture, greatly reduce the material moisture content.