... as ingredients to make puffed snack. Through friction of screw and barrel, the grains are cooked in the extruder. Forming is at ... aperture, including ball, tube, stick, ring, fruit loop, star, wheel and flower etc. 2. Raw materials: adopts corn, rice, wheat, oat ... for ball, tube, stick, ring, fruit loop, star, wheel and flower and heart shape by adjusting the mould in the extruder 4 ...