By full research on the process conditions of rice brain extrusion pufifng, the stabilization of rice bran extrusion, and rice bran extrusion equipment. The Single-screw extrusion machine is choosed as rice pufifng equipment. the supercrcritical carbon work as bulking agent in the new pufifng process, designing the new strutures of the screw and modle.introuducing the automatic control system to ach...