Apparatus for feeding scrap and base plastics material to an extruder

Apparatus for mixing fluffy scrap and rigid base material and feeding such mixture to an extruder or the like, said apparatus comprising an upright scrap hopper;

• an elongate, substantially vertical outlet conduit having its upper end in communication with said hopper for receiving scrap therefrom, said conduit having a lower discharge end;
• means for introducing fluffy scrap to said hopper;
• scrap feed means extending from within said hopper into and through said conduit for feeding scrap into and through said conduit, said scrap feed means comprising a rotary shaft having an interrupted helical vane thereon;
• rigid base material supply means;
• receiver means communicating with said base material supply means for receiving therefrom base material and communicating with said conduit between the upper and lower ends of the latter, and base material feed means including a rotary impeller extending through said receiver means for feeding base material from said receiver means into moving scrap material in said outlet conduit whereby material discharged from the discharge end of said conduit comprises a mixture of base and scrap materials.