Custom Plasticating Screws
Posi-Melt™ screws precisely engineered for your specific materials and processes, featuring advanced mixing elements and optimized compression ratios for superior melt quality.
Partner with MD Plastics Inc for cutting-edge industrial plastic manufacturing equipment and components. From custom Posi-Melt™ screws to complete Inject-EX™ systems, we engineer solutions that boost productivity, reduce waste, and maximize profitability for injection molders and extrusion processors worldwide.

Complete range of plasticating components and systems engineered for maximum performance and profitability.
Posi-Melt™ screws precisely engineered for your specific materials and processes, featuring advanced mixing elements and optimized compression ratios for superior melt quality.
Revolutionary Inject-EX™ molding systems with stationary screws and mechanical check valves, delivering improved consistency and mass density monitoring capabilities.
MDP™ and Posi-Shut™ valves engineered to improve shot-to-shot consistency by up to 58% while reducing cycle times and maintenance intervals.
Melt-Profiler™ and Melt-IQ™ systems for real-time temperature monitoring and process control, ensuring repeatable results for precision applications.
LSR conversions, vented barrel modifications, and injection unit upsizing/downsizing to optimize existing equipment for new materials and applications.
Complete technical partnership from initial consultation through manufacturing, testing, and follow-up support to optimize your plasticating processes.
MD Plastics Inc combines 25+ years of plasticating expertise with proprietary design software and patented technologies. Our engineered components deliver measurable improvements in melt quality, productivity, and equipment longevity while reducing scrap and downtime for manufacturers across industries.

From Fortune 500 companies to specialized manufacturers, our solutions deliver measurable performance improvements.
Over two decades of innovation in plasticating technology with proven results.
Eight issued patents including revolutionary Inject-EX™ and Mini-Shut™ technologies for superior performance.
Proprietary design software calculates heat transfer, shear rates, and pressure profiles for optimal solutions.
Documented improvements up to 58% better consistency and 20% cycle time reduction with leading manufacturers.
End-to-end partnership from initial consultation through manufacturing, testing, tuning, and ongoing technical support.
Industry-leading expertise in plasticating technology and manufacturing innovation.

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.
We design and manufacture custom Posi-Melt™ screws, MDP™ and Posi-Shut™ non-return valves, high-performance barrels, Mini-Shut™ nozzle tips, and complete Inject-EX™ injection molding systems tailored to your specific materials and processes.
Speak with our plasticating experts for personalized equipment recommendations.
Revolutionary plasticating and injection molding system technology
Miniature automatic shutoff nozzle tip eliminating drool
Precise control non-return valve for enhanced consistency
Contact our engineering team to discuss your plasticating challenges and discover custom solutions for enhanced productivity.
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.