Parallel Twin Screw Barrels

Nitrided & Bimetallic for High-Performance PVC Extrusion

Precision-engineered for long life and superior wear resistance


We design and manufacture high-quality parallel twin screw barrels for a wide range of extrusion applications, with a focus on durability and consistent performance in demanding processes like PVC pipe and profile production.
🛡 Wear Resistance
⚙ Custom Design
🚀 High Performance
⏱ Long Service Life

Selecting the right design

Selecting the right design for your process is critically important to optimizing melt conditions and maximizing your material properties. Plastic materials have broad variations in viscosity, melting points, volatiles, densities, moisture, sensitivity to shear, abrasive contaminants, etc. All of these variables, alone or in combination present significant barriers to maintaining homogeneity and melt consistency and 1output.
We can help you choose the optimal design for your process. From single-stage general purpose to two-stage barrier designs to double vented and with a host of mixer technologies and wear-resistant alloys, we have what you need to maximize your process. We have everything from low work to high work designs that work to keep your resins in proper condition.

Choosing the correct barrel design is essential for achieving optimal processing performance and product quality. We evaluate material characteristics, wear and corrosion demands, temperature exposure, and required mixing performance to define the ideal geometry and metallurgical option.

  • Material type: PVC, thermoplastics, rubbers, composites
  • Resistance needs: abrasion, corrosion, heat
  • Production targets: throughput, mixing homogeneity, torque

Our engineers collaborate with your team to create a tailored solution — from nitrided hardening to bimetallic coatings and precision machining.

Standard parallel twin screw barrel

Our standard parallel twin screw barrel is a versatile solution suitable for a wide range of applications. It excels in processing general-purpose materials and provides consistent and reliable extrusion results for industries such as plastics, rubber, and more.

Co-rotating parallel twin screw barrel

The co-rotating parallel twin screw barrel is designed for simultaneous rotation of both screws in the same direction. This configuration enables efficient mixing, compounding, and excellent self-cleaning properties, making it ideal for compounding and masterbatch production.

Counter-rotating parallel twin screw barrel

In contrast to the co-rotating design, the counter-rotating parallel twin screw barrel has screws that rotate in opposite directions. This design offers enhanced shear and mixing capabilities, making it suitable for processing materials with different viscosities and complex formulations.

Standard Parallel Twin Screw Barrel

Versatile solution for general-purpose extrusion tasks. Built for steady throughput and reliable material handling across plastics and rubber processing

Co-Rotating Parallel Twin Screw Barrel

Both screws rotate in the same direction to provide excellent mixing and uniform melting—ideal for compounding and high-output lines.

Counter-Rotating Parallel Twin Screw Barrel

For applications requiring higher compression and precise control. This design supports difficult formulations and high-torque processes such as PVC extrusion.

Design Options

  • Customized screw geometry and compression ratios
  • Variable pitch lengths for optimized throughput
  • Advanced mixing section designs for better homogenization
  • Precision machining for perfect meshing and high output

Advantages

  • Outstanding wear and corrosion resistance
  • High-performance mixing and melting
  • Long operational lifespan with minimal maintenance
  • Tailored solutions for specific materials and processes

Quality Assurance

  • Dimensional accuracy checks
  • Hardness and metallurgical testing
  • Surface finish inspections
  • Concentricity verification for smooth operation

Materials & Surface Treatment

  • Nitrided Steel for high wear resistance and long service life
  • Bimetallic Alloy for extreme abrasion and corrosion resistance
  • Tool Steel Options for heavy-duty applications
  • Surface treatments: nitriding, hard-chrome plating, and specialized coatings

Applications

  • PVC, PE, PP, ABS, and engineering plastics
  • Profile, pipe, sheet, and film extrusion
  • Compounding and pelletizing
  • Masterbatch production
  • Recycled plastics processing

Why choose MAA Technik

Manufacturing excellence, fast delivery and custom engineering for challenging extrusion needs.

🔧 Over 20 years of experience

📐 Custom designs & prototyping

🔬 Nitrided & bimetallic solutions

📦 Fast lead times

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