Double-Screw Plastic Extruder Working Characteristics:

1. The twin-screw plastic extruder is primarily used for producing pipes, sheets, granules, and profiled materials. The output of extrusion molding processing is twice or more than that of a single-screw extruder, and the energy consumption is also lower.

2. Single-screw extrusion plastic products require the addition of granular material for production, whereas twin-screw extruders, due to their strong conveying capability, may directly extrude powder materials, eliminating the granulation process, thereby reducing the processing cost of plastic products.

3. The twin-screw plastic extruder has a low shearing heat, requiring less thermal stability for special materials. This allows for a reduction in the amount of stabilizers used, resulting in a relative decrease in the toxicity of the stabilizers and a cost reduction.

4. Compared to general batch or continuous reactors, twin-screw extruders have a thinner dispersion layer of molten material and a larger melt surface area. The extremely thin, continuously renewed surface layer is beneficial for the mass transfer of chemical reactions and heat exchange. Twin-screw extruders allow for rapid and accurate completion of predetermined chemical changes during material transport. Modified polymers that are difficult to prepare in large agitated reactors can also be achieved in twin-screw reaction extruders. Using twin-screw extruders for reaction processing offers advantages such as no small volume, continuous processing capability, energy saving, a wide range of raw material and product options, and simple operation.