PP Raffia Plant Screw Barrel

PP raffia plant screw barrels are essential components in raffia extrusion equipment, designed to melt, mix, and extrude polypropylene resins into tapes or fibers. These tapes and fibers are then woven into products like woven sacks, tarpaulins, and ropes. The screw barrels play a crucial role in achieving uniform melt distribution, controlled cooling, and precise dimensional accuracy required for different raffia product specifications.

Specification: 
Screw diameter:Ø15-Ø300    Aspect ratio:15-46
Product type:
For different plastic products screw can be used: ordinary type, pin type, barrier type, separation type, exhaust type and so on. 
Base material:
1)38CrMoAlA(JIS SACM645)        2)42CrMo(AISI 4140)
Process:
Heat treatment       Nitriding treatment

Technical Parameters:
Nitriding depth: 0.50mm-0.80mm                   Nitriding hardness: 900-1000HV               
Nitriding: <= Level 1                                        Surface roughness: Ra 0.4                  
Screw straightness: 0.015mm                           The hardness of the surface after chrome plating:≥950HV       
Chromium layer thickness: 0.025~0.085mm     Double alloy depth: 3mm

Benefits

Uniform Melt Distribution and Dimensional Accuracy

PP raffia plant screw barrels ensure uniform distribution of molten polypropylene resin within the extrusion die, resulting in consistent tape thickness and dimensional accuracy. This enhances product performance and reduces material waste.

Enhanced Durability and Wear Resistance

Our screw barrels are manufactured from high-grade materials such as nitrided steel, bimetallic alloys, and tungsten carbide coatings, offering exceptional wear resistance and extended service life. This minimizes downtime and maintenance costs.

Optimized Processing Parameters

By optimizing screw geometry and material composition, our screw barrels improve extrusion parameters such as cooling efficiency, melt homogeneity, and line speed control. This enhances production efficiency and reduces energy consumption.

Customization Options

We offer customization options to meet specific customer requirements, including screw diameter, L/D ratio, flight geometry, material composition, and surface finishes. Our engineering expertise ensures that each PP raffia plant screw barrel is tailored for maximum performance and reliability.