Vented Screw Barrel for Blow Moulding & Plastic Extrusion
High-Performance Venting System for Superior Melt Quality & Reduced Contamination
The Vented Screw Barrel by Plastivo Extrusions is a precision-engineered, industrial-grade component designed to significantly enhance melt quality by removing moisture, air, and volatile gases during plastic processing. Built using high-quality mild steel with a hardened surface of 68 HRC, this screw barrel ensures outstanding durability, stable throughput, and consistent
output across a wide range of blow molding, extrusion, and compounding applications.
Plastivo Extrusions is a trusted manufacturer known for supplying screw barrels that meet global quality standards, offering long service life and precise engineering suited for modern plastic processing industries.
Technical Specifications
Key Features of Plastivo’s Vented Screw Barrel
✔ Enhanced Venting Design
Engineered with advanced vent zones that efficiently extract:
● Moisture
● Gases
● Air pockets
● Contaminants
This greatly reduces defects such as gels, bubbles, poor surface finish, and inconsistent wall
thickness.
✔ Durable, High-Grade Construction
Built from premium mild steel with:
● Deep nitrided hard surface (68 HRC)
● Corrosion-resistant coating
● Precision-machined internal finish
Suitable for heavy-duty industrial use and continuous 24/7 operations.
✔ High-Performance Melt Processing
The screw geometry ensures:
● Uniform melting
● Efficient plasticizing
● High throughput
● Consistent melt pressure
This improves final product performance and reduces production scrap.
✔ Customizable Configurations
Available in various:
● Diameters (20 mm to 200 mm)
● L/D ratios
● Venting depths
● Compression designs
● Mixing sections
Designed to fit all major blow molding and extrusion machines.
✔ Extended Operational Life
Advanced heat treatment, nitriding, and machining give the screw barrel exceptional:
● Wear resistance
● Fatigue strength
● Dimensional stability
What Is a Vented Screw Barrel?
A vented screw barrel is a specialized extruder component designed with strategic venting
zones that remove moisture, trapped air, solvents, and volatile gases from the plastic melt.
This enables:
● Higher melt purity
● Better homogenization
● Reduced defects
● Improved product clarity and consistency
Ideal for moisture-sensitive polymers and recycled plastics.
Applications Across Plastic Processing Industries
✔ Suitable Materials
● PP
● PE (HDPE, LDPE, LLDPE)
● PVC
● ABS
● Nylon
● Engineering plastics
● Recycled polymers
✔ Industry Use Cases
Ideal for industries requiring clean, moisture-free melt:
● Packaging
● Automotive
● Construction materials
● Consumer products
● Electronics
● Film & sheet production
● Bottle & container blow molding
✔ Application Types
● Blow Moulding
● Film Extrusion
● Pipe & Profile Extrusion
● Sheet Extrusion
● Recycling & Reprocessing
Why Choose Plastivo Extrusions Vented Screw Barrel?
Benefits at a Glance
✔ Superior moisture & gas removal
✔ Improved melt quality & consistency
✔ Higher throughput & lower energy use
✔ Reduced product defects & contamination
✔ Long-lasting 68 HRC hardened surface
✔ Suitable for recycled materials
✔ Custom designs for any machine
✔ Cost-effective & reliable operation
