The 28th N-EXPO Tokyo International Environmental Technology Exhibition 2019
The Tokyo International Environmental Technology Exhibition (N-EXPO) is one of the largest environmental exhibitions in Asia. It was first held in 1992 as the "NEW Waste Management Exhibition," and in 2000, to expand its scope, it was renamed the "NEW Environmental Exhibition." Over the years, thanks to the enthusiastic participation of major domestic and international companies and the strong support of visitors, the exhibition has grown into one of the largest environmental exhibitions in Asia.
2025-07-15
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The twin-screw extruder was developed on the basis of the single-screw extruder.
The twin-screw extruder has evolved from the single-screw extruder. Thanks to its excellent feeding performance, mixing and plasticizing capabilities, venting performance, and extrusion stability, it is now widely used in the forming and processing of extruded products.
2025-05-30
The working principle of a twin-screw extruder.
From the perspective of operating principles, twin-screw extruders come in different meshing and non-meshing types.
2025-05-31
Advantages of a twin-screw extruder
Thanks to its easy accessibility, the degree of wear on threaded components and the inner lining of the barrel can be readily inspected at any time, enabling effective maintenance or timely replacement. If problems arise with the extruded product, they might go unnoticed, leading to unnecessary waste.
2025-06-01
In a single-screw extruder, frictional resistance occurs in the solid-conveying section, while viscous resistance arises in the melt-conveying section. The frictional characteristics of solid materials and the viscosity of molten materials determine the conveying behavior. If certain materials have poor frictional properties, and if feeding issues remain unresolved, it will become even more challenging to feed these materials into a single-screw extruder. In a twin-screw extruder—particularly in a co-rotating intermeshing twin-screw extruder—the material transport is, to some extent, positive-displacement-based. The degree of positive displacement depends on the proximity of the helical flanks of one screw to those of the other screw relative to the screw grooves. By carefully designing the geometry of the screws in a tightly meshing, counter-rotating extruder, it is possible to achieve highly efficient positive-displacement conveying characteristics.
2025-06-02
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