Screw extruder uses extruding principle. Dry starch mix with water to have wet starch with moisture 15-20% enter extruder, the starch is heated and gelatinized by the spiral axis friction, and then extruded through 1-10 mm small hole under high pressure, once the starch comes into the atmosphere it will instantly expanded and dried, then goes to grinding and sieving to have pre-gelatinized starch. The internal friction can maintain 120-160°C without steam heating, low invest and consumption.
Applications：
■ Paper: Sizing agent, paper filler, water transfer printing；
■ Oil drilling:Mud stabilizer, water retention agent;
■ Coating: Suspension agent, stabilizer, thickening agent, adhesive;
■ Textile: Printing and dyeing sizing agent, finishing agent;
■ construction: Putty powder and latex paint thickening agent
