Screw Element

Intermeshing screw elements for conveying, kneading, mixing and devolatilising zones.

Screw Element — Rootier EXTRUSION component

Extrusion Screw Element

Extrusion screw elements are intermeshing components for conveying, kneading, mixing and devolatilising zones on twin-screw compounding lines. Built from imported high-hardness materials in conveying and kneading types, they are spline-tested for better matching and held in stock for regular-use brands.

Technical data

NameScrew Element
Element TypeConveying Element, Kneading Element
ApplicationPlastic Processing, Compounding and Modification
Material6542, WR5, WR13, Ni60, CPM9V
ManufacturingDrawing or Sample Based
Screw element types: 1 flighted, 2 flighted, 3 flighted, SK, KB 30°, KB 45°, KB 60°, KB 90°, DISK, TME, ZME, SME

Engineering highlights

  • Stocklist for regular use brands
  • Imported Material with high hardness
  • Spline tested for better matching

Frequently Asked Questions

  • A screw element is an individual section of a modular twin screw that performs specific conveying, kneading, mixing, or other processing functions.

  • Conveying elements primarily transport material along the barrel, while kneading elements provide more intensive mixing and shearing. Different combinations can be used to build a process-specific screw configuration.

  • Selection depends on the polymer, filler content, additive system, required dispersion, throughput, residence time, and desired processing intensity.

  • Yes. ROOTIER can supply individual screw elements or complete screw assemblies according to dimensions, configuration, material, and customer requirements.