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






US Patented Technology
ISO 9001 Quality Systems
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.
Talk to our experts for custom solutions and tailored guidance.
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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?
Talk to our experts for custom solutions and tailored guidance.

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

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

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

High-volume production of plastic housing components, connectors, and internal parts for electronic devices with tight tolerances and aesthetic requirements.
Talk to our experts for custom solutions and tailored guidance.



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.
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.
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.
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.
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
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