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Expert Injection Molding Screw and Barrel Repair Services

When your injection molding equipment underperforms, precision repair and refurbishment can restore optimal plasticating performance without the cost of complete replacement. Md Plastics Inc specializes in comprehensive screw and barrel repair services backed by advanced engineering expertise, proprietary diagnostics, and over two decades of industry innovation to maximize your equipment life and production efficiency.

Precision injection molding screw and barrel repair service

Our Injection Molding Screw and Barrel Repair Services

Comprehensive repair and refurbishment solutions engineered to restore peak plasticating performance and extend equipment life.

Screw Refurbishment & Rebuilding

Complete screw restoration including flight repair, wear compensation, and precision re-machining to original specifications. We utilize advanced surface treatments and hardening processes to restore and enhance screw performance and longevity.

Barrel Repair & Resurfacing

Expert barrel restoration through precision boring, liner replacement, and advanced surface treatments. Our barrel repair services eliminate wear patterns, restore dimensional integrity, and apply protective coatings to resist future abrasive and corrosive damage.

Non-Return Valve Repair

Specialized repair and replacement services for check valves and non-return mechanisms. We restore proper sealing, eliminate backflow issues, and improve shot-to-shot consistency with precision-machined components including our MDP™ Performance Non-Return Valves.

Surface Treatment & Coating

Advanced protective coatings including nitrided tool steel, PTA welding, Colmonoy or Stellite overlays, Armoloy XADC coatings, and HVOF Tungsten carbide applications. These treatments dramatically extend component life when processing abrasive, corrosive, or adhesive materials.

Diagnostic Engineering Analysis

Comprehensive component evaluation using advanced metrology and process analysis. Our engineers identify root causes of wear, assess material compatibility issues, and recommend targeted repairs or upgrades to resolve process inefficiencies and improve melt quality.

Downsizing & Upsizing Modifications

Injection unit modifications to optimize equipment for different applications or materials. Convert existing machines to handle new material requirements or production volumes without purchasing entirely new equipment, maximizing your capital equipment investment.

Data-Driven Solutions

Precision-Engineered Repairs That Restore Performance

At Md Plastics Inc, screw and barrel repair isn't just about fixing wear—it's about engineering better performance. Our team combines proprietary diagnostic tools like the Melt-Profiler™ system with decades of plasticating expertise to analyze your components, identify process inefficiencies, and implement precision repairs that restore optimal melt quality. Whether addressing abrasive wear, corrosive damage, or material adhesion issues, we apply advanced surface treatments and precision machining to extend equipment life and improve production consistency, helping you avoid costly downtime and maximize ROI on existing equipment.

Injection molding screw repair with advanced surface treatment
Client Success Stories

Proven Results

Trusted by leading manufacturers worldwide to restore and optimize plasticating performance.

"MD Plastics' screw and barrel retrofit on our 20-year-old machine gave it new life. The improvement in shot-to-shot consistency and overall performance is remarkable. We were considering replacing the entire machine, but their solution was far more cost-effective and delivered excellent results. Smart investment that extended our equipment life."

Daniel Foster

"The screw and barrel set we ordered for processing medical-grade silicone has performed exceptionally. The surface finish and material selection are perfect for our stringent requirements. MD Plastics understood our regulatory needs and provided complete material certifications. Process validation went smoothly. Reliable partner for critical applications."

Dr. William Chen

"We purchased their complete plasticating system package - screw, barrel, non-return valve, and nozzle. The components work together seamlessly and have transformed our processing capabilities. MD Plastics' systems engineering approach ensures optimal compatibility between components. Setup and commissioning support was excellent. Highly recommended."

Christopher Davis

"The analytical consultation process MD Plastics provided was worth the investment. They used their Melt-IQ system to diagnose issues we couldn't identify with standard process monitoring. The recommendations they made improved our process capability index substantially. Their scientific approach to troubleshooting is impressive and effective."

Kevin Barnes

"We ordered custom feed screws for our compounding extruders. MD Plastics' design improved our mixing efficiency and reduced residence time variability. Output consistency is much better, and we're hitting target specifications more reliably. The engineering team was collaborative throughout the design process. Very pleased with the results."

Nicole Stevens

"MD Plastics' screw and barrel retrofit on our 20-year-old machine gave it new life. The improvement in shot-to-shot consistency and overall performance is remarkable. We were considering replacing the entire machine, but their solution was far more cost-effective and delivered excellent results. Smart investment that extended our equipment life."

Daniel Foster

"The screw and barrel set we ordered for processing medical-grade silicone has performed exceptionally. The surface finish and material selection are perfect for our stringent requirements. MD Plastics understood our regulatory needs and provided complete material certifications. Process validation went smoothly. Reliable partner for critical applications."

Dr. William Chen

"We purchased their complete plasticating system package - screw, barrel, non-return valve, and nozzle. The components work together seamlessly and have transformed our processing capabilities. MD Plastics' systems engineering approach ensures optimal compatibility between components. Setup and commissioning support was excellent. Highly recommended."

Christopher Davis

"The analytical consultation process MD Plastics provided was worth the investment. They used their Melt-IQ system to diagnose issues we couldn't identify with standard process monitoring. The recommendations they made improved our process capability index substantially. Their scientific approach to troubleshooting is impressive and effective."

Kevin Barnes

"We ordered custom feed screws for our compounding extruders. MD Plastics' design improved our mixing efficiency and reduced residence time variability. Output consistency is much better, and we're hitting target specifications more reliably. The engineering team was collaborative throughout the design process. Very pleased with the results."

Nicole Stevens

"MD Plastics' screw and barrel retrofit on our 20-year-old machine gave it new life. The improvement in shot-to-shot consistency and overall performance is remarkable. We were considering replacing the entire machine, but their solution was far more cost-effective and delivered excellent results. Smart investment that extended our equipment life."

Daniel Foster

"The screw and barrel set we ordered for processing medical-grade silicone has performed exceptionally. The surface finish and material selection are perfect for our stringent requirements. MD Plastics understood our regulatory needs and provided complete material certifications. Process validation went smoothly. Reliable partner for critical applications."

Dr. William Chen

"We purchased their complete plasticating system package - screw, barrel, non-return valve, and nozzle. The components work together seamlessly and have transformed our processing capabilities. MD Plastics' systems engineering approach ensures optimal compatibility between components. Setup and commissioning support was excellent. Highly recommended."

Christopher Davis

"The analytical consultation process MD Plastics provided was worth the investment. They used their Melt-IQ system to diagnose issues we couldn't identify with standard process monitoring. The recommendations they made improved our process capability index substantially. Their scientific approach to troubleshooting is impressive and effective."

Kevin Barnes

"We ordered custom feed screws for our compounding extruders. MD Plastics' design improved our mixing efficiency and reduced residence time variability. Output consistency is much better, and we're hitting target specifications more reliably. The engineering team was collaborative throughout the design process. Very pleased with the results."

Nicole Stevens
The Md Plastics Difference

Why Choose Md Plastics Inc?

Over 25 years of plasticating innovation and engineering excellence.

Patented Technology

Exclusive access to proprietary diagnostic tools and repair methodologies backed by eight granted patents in plasticating technologies.

Engineering Expertise

Dedicated application engineers who analyze material behavior, troubleshoot process issues, and redesign components for superior performance beyond simple restoration.

Advanced Materials

High-quality tool steels and proprietary surface treatments including nitriding, PTA welding, and HVOF tungsten carbide to maximize component longevity.

Proven Results

Documented performance improvements including 58% better shot consistency and 20% cycle time reductions for clients across medical, automotive, and consumer electronics sectors.

Meet Our Founder

Industry-leading expertise in plasticating technologies since 1978.

Mike Durina, Founder of Md Plastics Inc

Mike Durina

Founder

Mike Durina founded Md Plastics Inc in 1999 after a distinguished 16-year career at Spirex, where as VP of Sales & Service he grew the company from $1.8 million to $22 million in revenue. With an AAS in Plastic Engineering from Ferris State University and a BS in Industrial Engineering from Kent State University, Mike has dedicated over four decades to advancing plasticating technologies. His deep technical knowledge and innovative mindset have resulted in eight granted patents, including revolutionary technologies like the Melt-Profiler™, Inject-EX™, Mini-Shut™, and MDP™ Performance Valve. Mike's philosophy centers on engineering better solutions rather than incremental improvements, combining rigorous analytical methods with practical manufacturing experience to help injection molders achieve greater profitability through superior plasticating performance.

Frequently Asked Questions

How do I know if my screw and barrel need repair or replacement?

Key indicators include increased shot-to-shot variation, visible wear on screw flights or barrel interior, longer cycle times, degraded melt quality, material drooling or stringing, and difficulty maintaining process temperatures. Our diagnostic engineering analysis can definitively assess component condition and recommend the most cost-effective solution.

What is the typical turnaround time for screw and barrel repairs?

Can you repair screws and barrels for any machine brand or size?

How much does screw and barrel repair cost compared to replacement?

What surface treatments do you recommend for abrasive materials?

Will repaired components perform as well as new ones?

Do you offer any warranty on repair work?

Can you modify components during repair to improve performance?

Have Questions About Your Equipment?

Our plasticating experts are ready to evaluate your components and recommend the optimal repair solution.

Patented & Proven

Awards and Recognition

Melt-Profiler patent certification

Melt-Profiler™ Patent

Proprietary inline melt temperature measurement technology

MDP Performance Valve patent certification

MDP™ Performance Valve Patent

Precise control non-return valve technology

Posi-Melt screw design patent certification

Posi-Melt™ Screw Design Patent

Advanced plasticating screw for superior melting and mixing

Ready to Restore Peak Performance?

Contact our engineering team for a comprehensive component evaluation and customized repair proposal.

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