Blending on the machine provides a homogenous mix of material at the throat of the machine. Slugs of regrind or dust cause flow variations of the melt that cause shorts and flash. Color, regrind, and pellets often separate when conveyed. Separation is a cause of color variation. Color pellets often separate when conveyed from a floor blender. Blending on the machine ensures consistent color. The fluidizer is used to prevent static build-up. Static tap pulses the fluidizer one a machine cycle to prevent static cling to the sight-glass.