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 over four decades of plastics industry expertise to MD Plastics Inc. With an AAS in Plastic Engineering from Ferris State University and a BS in Industrial Engineering from Kent State University, Mike began his career in 1978 working for injection molding firms before joining Spirex in 1984. During his 16-year tenure as VP of Sales & Service, he grew Spirex from $1.8 million in sales with 18 employees to $22 million with 180 employees. In 1999, Mike founded MD Plastics Inc to focus exclusively on advancing plasticating technologies. His deep understanding of the critical role plasticating units play in injection molding has led to eight issued patents, with innovations including the Melt Profiler™, Inject-EX™, Mini-Shut™, and MDP™ Performance Valve. Under his leadership, MD Plastics has become a trusted partner for manufacturers seeking enhanced quality and profitability through cutting-edge plasticating solutions.
What types of plasticating components does MD Plastics manufacture?
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.
How do you customize screws for specific materials and applications?
What performance improvements can I expect from MD Plastics components?
Do you provide technical support during installation and setup?
Can you upgrade or modify existing injection molding equipment?
What industries do you serve with your manufacturing equipment?
How do your process monitoring systems improve quality control?
What is the typical lead time for custom plasticating components?
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