Single screw extruder
From Plastics Wiki, free encyclopedia
Extruder, single screw Basic machine consists of a screw, barrel, drive mechanism, resin feed arrangement, and controls. The constantly turning screw augers the resin through the heated barrel where it is heated to proper temperature and blended into a homogeneous melt. Before the melt can leave the barrel, it must pass through a breaker plate and screen pack. This unit builds up backpressure in the barrel, filters out contaminants, and tends to convert turbulent melt flow into more laminar flow. The melt is then extruded through the die into the desired shape.
- 1. Hopper
- 2. Screw
- 3. Barrel
- 4. Feed Throat Cooling Jacket
- 5. Heaters
- 6. Screen and/or breaker plate
- 7. Die
See also
Process: Sheet extrusion • Profile extrusion • Pipe extrusion • Blown film extrusion • Cast film extrusion • Foam extrusion • Twin screw extrusion • Adiabatic extrusion • Coextrusion
Equipment: Plastic extruder • Feedscrew • Single screw extruder • Twin screw extruder • Extrusion machine manufacturers
See also: Plastic thermoforming • Blow molding • Plastic welding • Injection molding • Rotational molding
