Custom Posi-Melt™ Screws
Precision-engineered plasticating screws designed specifically for your materials, machines, and production goals. Never one-size-fits-all solutions.
Transform your injection molding operations with Columbus' most innovative plastic processing solutions. From custom screw designs to complete melt delivery systems, we engineer precision components that boost productivity, reduce waste, and maximize profitability for manufacturers throughout central Ohio's thriving industrial corridor.

Comprehensive plastic processing solutions from custom component design to complete system integration.
Precision-engineered plasticating screws designed specifically for your materials, machines, and production goals. Never one-size-fits-all solutions.
Revolutionary injection molding technology featuring stationary screws and improved melt quality control for superior part consistency.
High-performance MDP™ and Posi-Shut™ valves that improve shot consistency, reduce cycle times, and extend equipment life.
Expert consultation and system design to optimize your plastic processing operations, troubleshoot issues, and improve performance.
Melt-Profiler™ and Melt-IQ™ systems for real-time temperature monitoring and precise process control in critical applications.
LSR conversions, vented barrel modifications, and injection unit sizing to expand your processing capabilities cost-effectively.
Since 1999, we've partnered with Columbus-area manufacturers to solve complex plastic processing challenges. Our patented technologies and custom-engineered solutions help injection molders overcome Ohio's diverse industrial demands—from automotive components to medical devices—while maximizing efficiency and profitability in today's competitive manufacturing landscape.

Delivering measurable improvements in quality, efficiency, and profitability for manufacturers worldwide.
Experience the difference that innovative engineering and decades of expertise make.
Eight patents including revolutionary Inject-EX™ systems and Mini-Shut™ nozzle tips for Columbus manufacturers.
Never one-size-fits-all solutions—every component is precisely designed for your specific applications and goals.
58% improved consistency, 20% cycle time reduction, and 30% extended maintenance intervals documented.
End-to-end service from initial consultation through manufacturing, testing, tuning, and ongoing technical support.
Led by industry pioneer and patent holder Mike Durina.

Founder
Mike Durina brings unparalleled expertise to plastic manufacturing quality systems with an AAS in Plastic Engineering from Ferris State University and a BS in Industrial Engineering from Kent State University. His career began in 1978 working for injection molding firms before joining Spirex in 1984, where he served as VP of Sales & Service for 16 years. Under his leadership, Mike grew Spirex from $1.8 million and 18 employees to $22 million and 180 employees. In 1999, he founded Md Plastics Inc. with a deep understanding of plasticating unit importance in injection molding processes. Mike has been awarded eight patents with one pending, including innovations like the Melt Profiler™, Inject-EX™, Mini-Shut™, and MDP™ Performance Valve. His technical knowledge and disciplined approach to providing the right solutions has made Md Plastics a trusted partner for manufacturers seeking to enhance quality and profitability through innovative plasticating solutions and cutting-edge technologies.
Posi-Melt™ screws are custom-designed for your specific materials, machines, and production goals. We analyze melting points, thermal sensitivity, flow characteristics, and other material properties to create precision segments including feed zones, compression zones, and optional mixing sections with our proprietary XLA mixing elements.
Connect with our engineering team for personalized consultation and solutions.
Revolutionary plasticating and injection molding system
Automatic shutoff nozzle tip technology
Precise control non-return valve system
Get expert consultation and custom engineering solutions tailored to your specific manufacturing needs.
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.