Posi-Melt™ MB Barrier Screws
Posi-Melt™ Extrusion Screws
Posi-Melt™ XLA Mixing Screws
Posi-Melt™ Multipurpose Screws
High Performance Plasticating Barrels
Inject-EX™ Plasticating System
US Patented Technology certified

US Patented Technology

ISO 9001 Quality Systems certified

ISO 9001 Quality Systems

OEM Custom Nitrided Screw Barrel for Extruder Machines

Custom OEM nitrided screw barrels engineered for superior performance in extrusion and injection molding machines. Our patented Posi-Melt™ technology delivers up to 60% increased plastic exposure to barrel walls, ensuring uniform melt quality, faster changeovers, and reduced scrap. Available in diameters from 14mm to 260mm with bimetallic construction for maximum wear resistance and durability across thermoplastics, LSR, and specialty polymers.

Our Range of Products

Posi-Melt™ MB Barrier Screws

Posi-Melt™ MB Barrier Screws

  • Single-Channel Barrier Design
  • Fast Purging Performance
  • Lower Cost vs Multi-Channel
Posi-Melt™ Extrusion Screws

Posi-Melt™ Extrusion Screws

  • 60% Increased Barrel Exposure
  • Patented Flight Geometry
  • 14-240mm Diameter Range
Posi-Melt™ XLA Mixing Screws

Posi-Melt™ XLA Mixing Screws

  • Advanced Dispersive Mixing
  • Minimal Shear Degradation
  • Color Changeover Optimized
Posi-Melt™ Multipurpose Screws

Posi-Melt™ Multipurpose Screws

  • All Polymer Compatibility
  • Direct Drop-In Replacement
  • Made in USA
High Performance Plasticating Barrels

High Performance Plasticating Barrels

  • Bimetallic Construction
  • Precision Honed Tolerance
  • 14-250mm Bore Range
Inject-EX™ Plasticating System

Inject-EX™ Plasticating System

  • Ultra Precise Shot Control
  • Real-Time Melt Monitoring
  • Stationary Screw Design

Frequently Asked Questions

What diameter range is available for custom nitrided screw barrels?

Our custom screw barrels are available in diameters from 14mm to 260mm with precision honed tolerances for optimal performance across injection molding and extrusion applications.

How does nitriding improve screw barrel performance?

What is the lead time for custom OEM screw barrels?

Can these screw barrels retrofit existing extruder machines?

What polymers are compatible with your screw barrel systems?

What makes Posi-Melt™ technology superior to standard screws?

Do you offer technical support for screw barrel optimization?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Automotive Manufacturing

Automotive Manufacturing

Precision injection molded components for interior trim, exterior parts, and under-hood applications requiring consistent quality and fast cycle times.

Medical Device Manufacturing

Medical Device Manufacturing

Sterile plastic components for surgical instruments, diagnostic equipment, and disposable medical products with stringent quality and regulatory compliance.

Plastics Extrusion Processing

Plastics Extrusion Processing

Continuous production of pipe, profile, sheet, film, and compounding lines requiring uniform melt quality and efficient material throughput.

Consumer Electronics Manufacturing

Consumer Electronics Manufacturing

High-volume production of plastic housing components, connectors, and internal parts for electronic devices with tight tolerances and aesthetic requirements.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

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High-Quality Nitrided Single Screw Barrels

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Why Injection Molders and Extrusion Processors Choose Md Plastics Inc

Patented Innovation Since 1999

Eight granted US patents including Posi-Melt™ technology that increases plastic exposure to barrel walls by 60%, delivering uniform melt quality and reduced scrap rates across all polymer types.

Custom Engineering Expertise

Direct consultation with founder Mike Durina, who holds degrees in Plastic and Industrial Engineering. Our proprietary design software calculates heat transfer, shear rates, and pressure profiles for optimized performance.

Proven Performance Worldwide

Trusted by industry leaders like Foxconn, TE Connectivity, Boston Scientific, and Mitsubishi Chemical. Our solutions deliver faster changeovers, increased throughput, and extended equipment life with measurable ROI.

Request a Custom Screw Barrel Quote for Your Extruder Machine

Our engineering team will review your application requirements and provide expert recommendations within 24 hours. Get a custom solution designed for your specific polymer, throughput, and machine configuration.

Contact Us Today

For immediate assistance, feel free to give us a direct call at 3304825100 You can also send us a quick email at info@mdplastics.com