July 30, 2025
Reiloy Screws: Optimized for Processing Clear Materials
Clarity. Consistency. Confidence.
When it comes to processing clear resins—such as polycarbonate, PET, acrylic, and styrenics—quality and consistency are non-negotiable. Even the most minor defect can compromise a part’s aesthetics, functionality, or regulatory compliance. That’s why Reiloy screws are the trusted choice for processors demanding exceptional clarity and minimal contamination in every shot.
Key Benefits of Reiloy Screws for Clear Materials:
- Minimizing Degradation and Black Specks
Reiloy screws feature precision flight geometry designed to minimize resin stagnation and degradation, while also accounting for the polymer’s molecular structure to optimize melt quality. This helps prevent black specks and carbon buildup—common causes of transparent part rejections. - Enhanced Wear Resistance
Clear materials—especially those processed at high temperatures—can be harsh on screws. Reiloy offers a broad range of steels, alloys, and surface coatings that can be precisely matched to meet demanding customer requirements. These solutions resist wear and corrosion while maintaining a smooth surface finish, ensuring consistent melt quality over time. The result is reduced downtime and lower scrap rates due to screw wear or surface pitting. - Optimized Mixing Without Shear Stress
Unlike traditional screw designs that rely heavily on shear to blend the melt, Reiloy screws feature gentle, efficient mixing sections—like our Eagle Mixer—that avoid over-shearing sensitive resins. This results in improved melt quality and enhances optical properties due to the reduction in yellowing and haze in finished parts. - Faster Cleanouts and Material Changes
Reiloy’s Eagle Mixer functions as a positive pressure pump that blends efficiently and self-cleans during material changes. With the addition of our ceramic or ceramic chrome surface treatments, the screw achieves an ultra-low coefficient of friction, enhancing its self-cleaning properties. This enables faster purging and easier material changeovers—especially valuable when switching between clear and colored resins or in purity-critical applications like medical or consumer packaging.
Reiloy Eagle Screw
- Application-Specific Design Support
At Reiloy, we don’t believe in one-size-fits-all. As a solution-driven partner, we focus on building strong relationships and tailoring each screw to your specific resin and process—whether it’s high-viscosity polycarbonate lenses or thin-wall PET preforms. The result: improved melt homogeneity, better shot-to-shot consistency, and fewer processing issues.
Ceramic or Ceramic Chrome: The Clear Choice for Optical-Grade Processing
For clear material processing, Reiloy recommends screw coatings that minimize contamination, reduce resin degradation, and maintain a smooth surface finish—helping prevent black specks, burning, and discoloration. These treatments fill in microporosity and fractures found in tool steels, nitrided, or chrome-plated alloy screws, enhancing performance and purity.
Ceramic Chrome (also known as Chrome Oxide or Ceramic Chrome Plating)
- Best for: Clear, heat-sensitive materials (e.g., polycarbonate, PET, PMMA, styrenics)
- Benefits:
- Extremely smooth, hard surface that reduces resin hang-up and shear hotspots
- Excellent resistance to corrosion and chemical attack from aggressive additives
- Non-stick properties help prevent black speck formation and carbonization
- Easier cleanouts and color changes
- Reiloy Note: Ceramic chrome is often preferred for high-clarity and medical-grade applications due to its inert, low-contamination surface.
Bottom Line:
Clear materials demand a clear choice. With a focus on minimizing contamination, enhancing clarity, and extending screw life, Reiloy delivers processing solutions that help you protect your product quality and your bottom line.
Let’s make your next shot crystal clear.
Contact your Turner Group representative to learn more about Reiloy screws for clear material processing.