The parallel screw barrel is a fundamental component in many extrusion and injection molding machines. Known for its straightforward design and reliable performance, it plays a critical role in melting, mixing, and conveying plastic materials.
Understanding the benefits and applications of parallel screw barrels helps manufacturers choose the right equipment for their production needs.
What Is a Parallel Screw Barrel?
A parallel screw barrel houses a screw with a uniform diameter along its entire length. Unlike conical or tapered barrels, the screw diameter does not change, resulting in consistent shear and pressure throughout the process.
This design is widely used in applications requiring steady melting and conveying of thermoplastics.
Key Features of Parallel Screw Barrels
- Consistent Shear: The uniform screw diameter provides steady shear force, suitable for standard melting and mixing.
- Simpler Design: Easier to manufacture and maintain compared to conical or barrier screws.
- Cost-Effective: Generally more affordable with longer service life when processing standard polymers.
- Versatile Applications: Used in extrusion of films, sheets, pipes, and injection molding of common plastics.
Applications
- Plastic film extrusion (PE, PP)
- Pipe and profile extrusion
- Injection molding of general-purpose plastics
- Compounding and recycling operations
Materials and Manufacturing
High-quality parallel screw barrels are typically made from alloy steels such as 38CrMoAlA, with surface treatments like nitriding or bimetallic lining to resist wear and corrosion.
Precision machining ensures tight tolerances between the screw and barrel, minimizing melt leakage and maximizing efficiency.
Choosing Zhoushan Juyuan Machinery for Parallel Screw Barrels
Zhoushan Juyuan Machinery offers durable, precision-engineered parallel screw barrels compatible with global extrusion and injection machine brands such as Haitian, KraussMaffei, Battenfeld, and others.
Our products feature:
- Customizable designs to fit your machine and material requirements
- Advanced wear-resistant coatings
- Strict quality control and fast delivery
- Expert technical support worldwide
📞 Contact Us for Parallel Screw Barrels
Enhance your extrusion or injection molding process with high-quality parallel screw barrels from Zhoushan Juyuan Machinery.
📧 Email: cxj.job@gmail.com
📱 WhatsApp: +86 13905808474
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