Feeding section: composed of double-ended isometric screw, its role is mainly to feed the material into the fast.
Compression and extrusion section: composed of variable pitch screw, through the combination of variable pitch screw will compress the material, each pitch into a section of the winch, two different sizes of the pitch into two sections of the winch, easy to install and replace after wear and tear. There is a shear pin installed between the two blades of the pitch screw to shear and mix the compacted material.
Melting and homogenizing section: it consists of one and a half sections of equidistant spiral. The discharge is equipped with a porous template or conical mold set, by changing the diameter and number of holes in the porous template or changing the gap between the conical mold set to adjust the pressure of the puffing cylinder of the puffing machine, so as to achieve a change in the effect of puffing.
