Patented dual-stage fluff feed assembly
Metering and mixing is slaved to the extruder via signal isolation circuitry
Independently adjustable horizontal and vertical drives precisely control fluff metering and homogeneous mixing of the pellet/fluff mixture at the extruder throat
Exclusive vertical auger design provides thorough mixing to assure constant extruder screw pressure and improve gauge control, resulting in better product
STE units have DC motors; STFH units have brushless AC inverter duty motors, STFH-HP units have brushless AC flux vector drive motors
Sterling's fluff feed hoppers are designed to feed a percentage of the fluff directly back into the extruder throat. The unique dual-stage design ensures that the fluff is mixed with the virgin material above the extruder throat. Each auger is independently adjustable and can be set to follow the extruder screw speed by monitoring a tachometer signal from the extruder.
The STE unit is designed to re-feed edge trim only. The STFH will handle up to 30% of the edge trim and/or roll scrap. The STFH-HP is designed for those applications where scrap re-feed greater than 30% is common.
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