Compartment until granulation granulation back machines with duplicate material. After granulation pellets are cooled and screened in order to become finished material, sieved powder or small pellets often re-enter the process of granulation, usually into granulation mixer or pending positions, Because of this recycled material is re-quenched and granulation, in the quenched and other materials after mixing if unevenly,vegetable oil plants with a small pellet machine back, for some feed formulation, sometimes produce "flower material."
Aperture ring mold wall finish is inconsistent. As die hole finish degree inconsistent particles by extrusion resistance and the pellet machines pressure is not the same, the color change on the inconsistent. In addition, some walls have burr hole ring mold particles in the extrusion will scratch the surface, causing the surface of the individual particles of different colors.