基本信息
The side feeder, also known as a side stuffer or force feeder, is a critical auxiliary device in twin-screw compounding extrusion lines. It is typically mounted at a specific downstream location on the main twin-screw extruder barrel. Its primary function is to continuously, precisely, and forcibly introduce high-load fillers (such as calcium carbonate, talc, wood flour), chopped glass fibers, recycled material, or other secondary components into the partially molten or plasticized polymer melt. It solves the critical challenge of stable feeding for materials with low bulk density, poor flowability, or a tendency to bridge. It ensures formulation accuracy and protects the main screws from direct impact by highly abrasive fillers. It is a standard configuration for producing high-filler masterbatches, reinforced composites, and wood-plastic products.