Custom Plasticating Screws
Posi-Melt™ screws engineered with precision segments and mixing elements for optimal melt quality and material processing efficiency.
Md Plastics Inc delivers cutting-edge plasticating solutions and injection molding technologies that drive profitability for manufacturers. With over 25 years of innovation, we engineer custom components, patented systems, and advanced process control tools to optimize your production efficiency and part quality.

Comprehensive plasticating solutions from custom components to complete system integration.
Posi-Melt™ screws engineered with precision segments and mixing elements for optimal melt quality and material processing efficiency.
Inject-EX™ advanced molding systems with non-reciprocating technology for improved consistency and melt quality control.
Melt-Profiler™ and Melt-IQ™ systems providing real-time temperature monitoring and quality prediction capabilities.
MDP™ and Posi-Shut™ valves engineered for superior shot-to-shot consistency and extended maintenance intervals.
LSR conversions and vented barrel modifications to expand processing capabilities without new equipment investment.
Comprehensive engineering partnership for process optimization, troubleshooting, and performance improvement solutions.
Our proprietary plasticating technologies combine decades of engineering expertise with cutting-edge design tools to deliver measurable improvements in part quality, cycle times, and production profitability. From custom screw designs to complete melt delivery systems, we provide solutions tailored to your specific materials and objectives.

Trusted by industry leaders for innovative plasticating solutions and measurable performance improvements.
Leading the industry with patented innovations and proven expertise since 1999.
Eight awarded patents including Inject-EX™, Mini-Shut™, and Posi-Melt™ technologies driving industry advancement.
Over 25 years of specialized knowledge in plasticating systems and injection molding optimization.
Never one-size-fits-all approach with solutions tailored to your specific materials and production goals.
Trusted by Fortune 500 companies with documented improvements in consistency, efficiency, and profitability.
Industry pioneers driving plasticating innovation forward.

Founder
Mike Durina brings unparalleled expertise to plastic injection molding 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 three injection molding firms before joining Spirex in 1984, where he served as VP of Sales & Service for 16 years. Under his leadership, Mike transformed Spirex from a $1.8 million company with 18 employees to a $22 million operation with 180 employees. In 1999, he founded Md Plastics Inc with a vision to advance plasticating technologies. 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 role in injection molding drives the company's mission to help molders achieve greater profitability through better component design and manufacturing.
What makes Md Plastics' custom plasticating screws different from standard options?
Our Posi-Melt™ screws are never one-size-fits-all. We analyze your specific operations, machines, materials, and goals to design precision-engineered segments including feed, compression, and metering zones with optional XLA mixing elements for maximum melt quality.
How does the Inject-EX™ system improve upon traditional injection molding technology?
What kind of performance improvements can I expect from upgrading my plasticating components?
Do you provide engineering support for process optimization?
Can you convert existing equipment for different materials or processes?
What materials and surface treatments do you use for component durability?
How do your process control systems help with quality assurance?
What is your typical project timeline from consultation to delivery?
Connect with our engineering team for a custom solution consultation.
Industry-leading innovation in plasticating technology
Serving global industry leaders reliably
Proven track record since 1999
Contact our engineering team for a consultation on optimizing your plasticating systems and injection molding operations.
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