Custom Screw Design
Precision-engineered Posi-Melt™ screws designed specifically for your materials, machines, and production goals to optimize melt quality and processing efficiency.
Transform your manufacturing operations with MD Plastics' cutting-edge injection molding technologies. From custom Posi-Melt™ screws to revolutionary Inject-EX™ systems, we engineer precision solutions that boost productivity, reduce scrap, and maximize profitability for injection molders and extrusion processors worldwide.

Comprehensive solutions from custom component design to complete melt delivery systems for enhanced manufacturing performance.
Precision-engineered Posi-Melt™ screws designed specifically for your materials, machines, and production goals to optimize melt quality and processing efficiency.
Revolutionary molding technology featuring stationary screws and advanced check valve mechanisms that eliminate traditional reciprocating screw limitations for superior consistency.
MDP™ and Posi-Shut™ valves engineered to improve shot-to-shot consistency, reduce cycle times, and extend equipment maintenance intervals significantly.
Expert consultation and support to assess material behavior, troubleshoot process inefficiencies, and redesign systems for optimal manufacturing performance.
Melt-Profiler™ and Melt-IQ™ technologies for real-time temperature monitoring and precise process control to ensure repeatable, high-quality results.
LSR conversions and vented barrel modifications to expand your equipment capabilities without major capital investments in new machinery.
At MD Plastics, we don't just manufacture components—we engineer complete solutions tailored to your specific manufacturing challenges. Our patented technologies like Posi-Melt™ screws and Inject-EX™ systems deliver measurable improvements in quality, productivity, and profitability for injection molders worldwide.

Manufacturing giants like Foxconn, TE Connectivity, and Boston Scientific rely on our innovative solutions.
Over 25 years of innovation and expertise in injection molding technologies.
Eight granted patents including revolutionary Inject-EX™ and Melt-Profiler™ systems for superior performance.
Never one-size-fits-all solutions—every component is precisely engineered for your specific application requirements.
Documented improvements including 58% better consistency and 20% cycle time reduction for manufacturing clients.
End-to-end service from initial consultation through design, manufacturing, testing, and ongoing technical support.
Industry experts with decades of plasticating technology experience.

Founder
Mike Durina brings unparalleled expertise to injection molding technologies 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 across multiple 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 vision to advance plasticating technologies beyond incremental improvements. Mike has been awarded eight patents with one pending, including revolutionary innovations like the Melt Profiler™, Inject-EX™, Mini-Shut™, and MDP™ Performance Valve. His deep understanding of the plasticating unit's critical importance to injection molding has driven the company's success in helping manufacturers achieve greater profitability through superior component design and cutting-edge technologies.
What is an injection tech?
An injection tech refers to the technologies and components used in injection molding processes, including screws, barrels, valves, and control systems that melt and inject plastic materials into molds to create parts.
How do custom Posi-Melt™ screws improve manufacturing efficiency?
What makes the Inject-EX™ system different from traditional injection molding?
Can existing equipment be upgraded with MD Plastics components?
How long does custom component design and manufacturing take?
What industries benefit most from advanced injection molding technologies?
Do you provide ongoing technical support after installation?
What kind of performance improvements can I expect?
Speak with our engineering experts about your specific manufacturing challenges.
Revolutionary injection molding innovations
Trusted by Fortune 500 manufacturers
Proven track record since 1999
Connect with our engineering team to discuss your specific injection molding challenges and discover how our innovative technologies can boost your productivity and profitability.
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