A Conical Twin Screw Barrel is one of the most critical components in PVC extrusion and granulation lines. Its design directly influences plasticizing efficiency, material stability, output performance, and service life. When I evaluate extrusion equipment, I often find that the screw barrel structure determines more than 70% of the machine's final processing results. So, what makes this component so important? How does it improve production? And why do so many manufacturers trust E.J.S Industry Co., Ltd. for customized solutions? Let's explore these questions in detail.

What Are the Key Advantages of Using a Conical Twin Screw Barrel?

A Conical Twin Screw Barrel is engineered for excellent shearing performance, stable feeding, strong mixing ability, and precise melting control. Its conical shape creates a gradual compression ratio, allowing PVC powder and additives to be plasticized evenly without degradation.

Main advantages include:

• High torque transmission

• Strong material conveying capability

• Uniform melting and mixing

• Extended wear and corrosion resistance

• Improved output and product consistency

• Long service life with reduced maintenance

This design is especially critical for PVC pipes, profiles, boards, granules, and WPC products.

How Do We Ensure Stable Performance Through Advanced Material and Manufacturing?

At E.J.S Industry Co., Ltd., every Conical Twin Screw Barrel is produced using premium alloy materials such as 38CrMoALA, SKD61, or bimetallic layers. These materials undergo deep nitriding, vacuum quenching, and high-frequency hardening to ensure excellent durability.

Typical Technical Specifications

These parameters ensure high wear resistance, smooth surface finishing, and excellent torque support.

Why Does the Structure of a Conical Twin Screw Barrel Matter?

The geometry of the screw and barrel determines material flow, mixing intensity, and extrusion pressure. A well-designed Conical Twin Screw Barrel ensures excellent PVC processing results.

Core Structural Features

• Conical screw design: Enhances compression stability

• Optimized pitch: Boosts feeding capacity

• Deep channel geometry: Improves melting efficiency

• High-precision barrel: Prevents material leakage and backflow

• Perfect intermeshing: Creates strong shearing and mixing actions

Key Benefits in Real Production

• Faster plasticizing at lower temperatures

• Stable extrusion pressure for consistent output

• Smooth surface finish of extruded products

• Higher resistance to wear when processing CaCO₃-filled PVC

• Lower energy consumption and longer component lifespan

How Does a Conical Twin Screw Barrel Improve Manufacturing Results?

Production lines equipped with high-quality screw barrels experience significantly higher efficiency and lower defect rates. Based on feedback from global customers of E.J.S Industry Co., Ltd., the improvements include:

• 10–25% higher output due to better feeding and compression

• Reduced color difference thanks to more uniform mixing

• Longer service life, especially when using bimetallic alloys

• Smoother pipe and profile accuracy due to stable pressure

• Optimized processing temperature, protecting PVC resin from degradation

These advantages directly enhance factory profitability and product competitiveness.

What Application Industries Rely on Conical Twin Screw Barrels?

A Conical Twin Screw Barrel is suitable for a wide range of PVC processing equipment:

Primary Applications

• PVC pipe extrusion lines (UPVC/CPVC)

• PVC profile extrusion

• PVC/WPC door and window frames

• PVC sheet and board extrusion

• PVC granulation and pelletizing

• Cable materials and special compounds

Whether for high-speed extrusion or heavy-calcium formulations, conical screw barrels maintain reliable performance.

What Makes E.J.S Industry Co., Ltd. a Trusted Supplier?

E.J.S Industry Co., Ltd. has more than 30 years of screw barrel manufacturing experience. Our engineering team focuses on:

• Precision CNC machining

• Metallurgical treatment optimization

• Custom design based on different formulas

• Fast delivery with strict quality control

• Technical support for installation and calibration

We supply replacement Conical Twin Screw Barrels compatible with major brands such as:
CINCINNATI, KRAUSSMAFFEI, BATTENFELD-CINCINNATI, AMUT, and many Chinese models.

FAQ About Conical Twin Screw Barrel

1. What makes a Conical Twin Screw Barrel better than a parallel type?

A conical design provides higher torque, better feeding of PVC powder, and stronger compression. This results in more stable production, making it ideal for pipes and profiles that require strong extrusion pressure.

2. How long does a Conical Twin Screw Barrel typically last?

Service life depends on material and formula. Nitrided screws last around 1–3 years, while bimetallic Conical Twin Screw Barrels can last 3–5 years or more, especially when processing CaCO₃-filled PVC.

3. Can a Conical Twin Screw Barrel be customized for my extruder model?

Yes. E.J.S Industry Co., Ltd. provides full customization, including diameter, L/D ratio, compression section, and alloy layer thickness, ensuring optimal performance for your production line.

4. What should I consider before choosing a Conical Twin Screw Barrel?

Key factors include material formulation (PVC, WPC, filled compounds), expected output, machine type, and wear resistance requirements. Providing these details helps us recommend the most suitable screw barrel design.

Contact E.J.S Industry Co., Ltd. for High-Performance Conical Twin Screw Barrels

A reliable Conical Twin Screw Barrel directly determines the efficiency and quality of your PVC extrusion line. If you need customized solutions, replacement parts, or technical support, E.J.S Industry Co., Ltd. is ready to assist.

Contact us today for detailed specifications, pricing, and professional guidance.