8477.20.00.05 - Single screw

This HTS category, 8477.20.00.05, specifically covers single-screw extruders designed for processing rubber or other thermosetting materials. These machines utilize a single rotating screw within a barrel to melt, mix, and force molten material through a die to create a continuous profile. They are essential for manufacturing products such as pipes, sheets, profiles, and filaments from materials that set irreversibly upon heating.

This classification distinguishes single-screw extruders from their sibling category, 8477.20.00.15, which encompasses "other" extruders, including those with multiple screws (e.g., twin-screw extruders). While both types are used for similar material processing, the defining characteristic here is the single screw mechanism, which often dictates the application and the characteristics of the extruded product.

As a leaf node, this category does not have further subcategories. Classification within this specific code is determined by the presence of a single screw configuration and the intended use for processing rubber or thermosetting materials, as opposed to other plastic types or different extrusion technologies.