The top stuffer includes a stainless steel hopper with three feed openings, a stainless steel single
screw auger with removable stirrer arm and a variable speed drive.
With this system a small, continuous stream of sand is withdrawn by a
screw auger.
Hard-to-feed material can be introduced either by ram stuffer or
screw auger to force-feed materials at the extruder throat, or through a side-arm addition where the material is metered into the molten polymer stream beyond the extruder's melting section.