Posi-Melt™ Custom Screw Design
Never one-size-fits-all, our Posi-Melt™ screws are engineered specifically for your materials, machines, and production goals with precision feed, compression, and metering zones for optimal melt quality.
MD Plastics delivers precision-engineered injection molding screw parts and expert repair services to Houston's thriving manufacturing sector. With over 25 years of innovation, our patented Posi-Melt™ screws and custom-designed components optimize melt quality, reduce downtime, and extend equipment life for injection molders across the Gulf Coast region. From emergency repairs to complete screw redesigns, we provide the technical expertise and rapid turnaround that Houston's fast-paced industrial operations demand.
Comprehensive screw design, manufacturing, repair, and process optimization solutions for Houston-area injection molders and extrusion processors.
Never one-size-fits-all, our Posi-Melt™ screws are engineered specifically for your materials, machines, and production goals with precision feed, compression, and metering zones for optimal melt quality.
Patented performance valves that improve shot-to-shot consistency by up to 58%, reduce cycle times by 20%, and extend maintenance intervals—proven in medical-grade molding applications.
Expert repair services using high-quality tool steels and proprietary surface treatments including nitriding, PTA welding, and HVOF tungsten carbide coatings to restore performance and resist wear.
Modify your existing equipment for Liquid Silicone Rubber processing, expanding your capabilities to include medical-grade silicone parts without purchasing dedicated LSR equipment.
Upgrade your injection units with venting capabilities to eliminate gases and volatiles during plasticating, essential for hygroscopic materials and high-quality applications.
Partner with our engineers to assess material behavior, troubleshoot process inefficiencies, and redesign systems for improved performance—from quick upgrades to ground-up solutions.
Houston's industrial sector demands reliability and precision. Our injection molding screw systems combine 25+ years of plasticating expertise with patented technologies like Posi-Melt™ and Melt-IQ™ to deliver measurable improvements in melt quality, productivity, and equipment longevity. We don't just manufacture parts—we engineer complete solutions tailored to your specific materials, processes, and quality requirements. Whether you're running medical-grade polymers, automotive components, or high-volume consumer products, our custom-designed screws and barrels optimize every phase of the plasticating cycle. With proprietary design software that calculates heat transfer, shear rates, and pressure profiles, we eliminate guesswork and deliver consistent, repeatable results that reduce scrap and maximize your ROI.
Delivering measurable results for injection molders across automotive, medical, electronics, and consumer goods manufacturing.
Over two decades of plasticating innovation backed by eight patents and proven results.
Eight issued patents including Posi-Melt™ screws, Mini-Shut™ nozzles, and Inject-EX™ systems—technologies that deliver real performance improvements.
Deep understanding of Gulf Coast manufacturing needs, from high-humidity processing challenges to rapid turnaround requirements for Houston's 24/7 production environments.
From initial consultation and math modeling through manufacturing, testing, tuning, and ongoing support—we partner with you throughout the entire process lifecycle.
Documented improvements of 58% better shot consistency, 20% reduced cycle times, and 30% extended maintenance intervals with our engineered solutions.
Industry leadership backed by decades of plasticating expertise.
Founder
Mike Durina founded MD Plastics Inc. in 1999 after a distinguished 16-year career at Spirex, where as VP of Sales & Service he grew the company from $1.8 million and 18 employees to $22 million and 180 employees. His deep understanding of the critical role plasticating units play in injection molding drove him to establish a company focused exclusively on advancing these technologies. Mike holds an AAS in Plastic Engineering from Ferris State University and a BS in Industrial Engineering from Kent State University. Since 1978, he has dedicated his career to the plastics industry, and his innovations have earned him eight patents with one pending. Under his leadership, MD Plastics has become a trusted partner for injection molders worldwide, serving major manufacturers including Foxconn, Boston Scientific, TE Connectivity, and Aptiv. Mike's commitment to 'Inventing Better' drives the company's mission to help injection molders achieve greater profitability through superior plasticating components and breakthrough technologies.
What types of injection molding screws can be repaired or replaced?
We repair and manufacture custom screws for all major injection molding machine brands and sizes. Our expertise covers standard plasticating screws, barrier screws, mixing screws, and specialized designs for materials ranging from commodity plastics to engineering resins, LSR, and medical-grade polymers. We can also retrofit older equipment with modern screw technology.
How long does it take to design and manufacture a custom injection molding screw?
What materials and surface treatments are available for screw components?
Can you improve the performance of my existing injection molding equipment?
Do you provide on-site support and troubleshooting for Houston facilities?
What is the warranty on your custom screws and repair work?
How do your Posi-Melt™ screws differ from standard off-the-shelf screws?
What ROI can I expect from upgrading my injection molding screws and barrels?
Our plasticating experts are ready to discuss your unique requirements and recommend the optimal solution.
Industry-leading innovations in plasticating technology
Trusted expertise since 1999
Serving industry leaders worldwide
Contact our Houston-area team for a free consultation. We'll analyze your current setup and recommend solutions to improve quality, reduce costs, and increase 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