This article explores the structure, types, and functions of extruder screws, which are essential in resin processing. It distinguishes between single-screw and twin-screw extruders, highlighting their respective advantages in mixing and production efficiency. The document also discusses different screw designs, such as full-flight and mixing (darmage) screws, and their impact on resin blending and production output. The key takeaway is that selecting the right extruder screw depends on the specific application and desired balance between mixing efficiency and production capacity.

Perhaps many people have discovered that most of the extruders used in large-scale product production lines are single-screw structures, and very few are twin-screw structures. Upstream raw material suppliers, especially manufacturers of modified materials, functional masterbatches or color masterbatches, mostly use twin-screw extruders. Why is there such a difference? In this article, the editor will analyze and discuss the difference between single-screw extruders and twin-screw extruders.

As the workhorse in the field of compounding, the twin-screw extruder's superior performance and customizability are its advantageous features in this position. It can combine different additives and fillers to achieve different particle shapes and properties with different properties. While a variety of additives and fillers can be processed for extrusion, some methods of obtaining these products can also lead to contamination problems and low flow or low pressure in many areas throughout the barrel.

The specific structure of plastic twin-screw extruders is based on the actual twin-screw extruders, and specially designed twin-screw extruders can be divided into meshing types and non-meshing types according to the relative positions of the two screws. Plastic twin-screw extruders can arrange and combine thread elements and barrel elements of various geometric shapes. Based on experience-theory-practice-test, the design can be optimized for different mixing requirements to adapt to the needs of different process formulas, making the co-rotating twin-screw extruder highly adaptable.

Special color masterbatch has significant advantages such as high concentration, good dispersion and cleanliness during product processing.