Custom Silicone Roller for EVA Solar Encapsulation Film Lines
Product Overview:
This custom silicone roller is engineered for continuous nip pressure and defect-free tracking in high-speed EVA (Ethylene Vinyl Acetate) solar encapsulation film extrusion and casting lines. Fabricated with a premium addition-cured silicone matrix over a structural carbon steel or alloy core, it provides outstanding non-stick release to prevent high-tack EVA resins from sticking or wrapping under continuous operational heat up to +250℃. Restricting radial runout to ≤0.005mm ensures uniform pressure distribution for flawless film gauge control.
Roll Function: Chill Transfer Rollers
Industry Applications: Industry, New Energy, Electronics
Inquiry Email: sales@astraroll.com
Custom Silicone Roller for EVA Solar Encapsulation Film Lines Details
The AstraRoll Custom Silicone Roller is a high-performance backup pressure component developed specifically for solar packaging film machinery processing EVA, POE, and PVB polymers. Because EVA resin becomes highly viscous and tacky when extruded from the die, this roller integrates a specialized low-surface-energy silicone formulation that ensures immediate release, preventing web tearing, wrapping, or line shutdowns.
Produced via a monolithic injection molding process, the roller face is entirely seamless and free of parting lines or grinding streaks. This guarantees that no cosmetic defects or periodic marks are transferred to the clear photovoltaic encapsulation sheets, protecting the optical clarity and long-term laminated performance of the final solar module packaging.
Technical Parameters
Product Framework: Precision Silicone Pressure Roller for Solar EVA Film Casting
Compatible Polymers: High-Tack EVA, POE (Polyolefin Elastomer), PVB, and Functional Liners
Surface Elastomer: High-Purity Platinum-Cured Liquid Silicone Rubber (LSR) Matrix
Surface Release Quality: Permanent Non-Stick Formulation with Custom Matte Roughness (Ra)
Core Base Shaft: Heavy-Wall Seamless Carbon Steel Core / Forged 42CrMo Alloy
Hardness Spectrum: 60 Shore A – 85 Shore A (±3 Shore A tolerance)
Total Indicator Runout (TIR): ≤0.005mm (Achieved via synchronized CNC grinding)
Thermal Operating Window: Continuous deflection-free operation up to +250℃
Cooling Architecture: Internal water-cooling structural core options available
Applications
Solar EVA Encapsulation Sheet Extrusion: Serving as the primary backing nip roller compressing molten EVA onto the main texturing and cooling cylinders.
POE Film Production Lines: Providing uniform cross-web contact and release for next-generation multi-layer photovoltaic encapsulation sheets.
Photovoltaic Back sheet Lamination: Delivering high-pressure bonding forces to laminate protective fluoropolymer films to structural PET substrates.
Why Choose AstraRoll's EVA Film Silicone Roller?
Advanced Non-Stick Chemistry for Flawless EVA Release: Formulated with low-surface-energy polymers that eliminate tack bonding, preventing hot molten EVA from wrapping or sticking to the roller face during high-speed runs.
Monolithic Seamless Surface Finish: Formulated via a seamless molding process that leaves zero joint lines or grinding streaks, ensuring a perfectly uniform matte profile across the solar sheet.
+250℃ Thermal Stability with Constant Hardness: Withstands continuous high operational heat adjacent to extrusion dies without dimensional swelling, chemical bleeding, or elastomeric sagging.
Sub-Micron Runout Precision (≤0.005 mm Runout): Co-ground with the core shaft via CNC machinery to lock in symmetric cross-web nip pressure, eliminating gauge variations in the cooling polymer.
Q1. Are you a trader or direct factory?
We are a direct manufacturing factory with over 20 years of expertise in high-end industrial rollers, casters and material handling solutions. Our facility operates with ISO-certified quality management systems, allowing us to maintain full control over production cycles and quality standards. Throughout two decades of growth, we have established deep, long-term strategic partnerships with several listed companies and global automation leaders, proving our reliability as a high-tier industrial supplier.
Q2. What are your main products?
AstraRoll specializes in the engineering and production of three core product lines: Industrial Rollers, Heavy-Duty Wheels, and Precision Casters. We do not just sell components; we provide integrated movement and transport solutions. Our products are widely utilized across high-demand sectors, including: New Energy, Lithium Battery, Mining, Heavy Industry, Medical Institutional, Agriculture and Logistics.
Q3. What about delivery time?
We deeply understand that project timelines are critical.
Standard Products: Usually dispatched within 7–15 working days if the components are in stock.
Customized/OEM Orders: Depending on the complexity and volume, the lead time typically ranges from 20–35 days. This includes time for technical drawing confirmation, specialized tooling, and rigorous pre-shipment testing.
Shipping Methods: We offer flexible global logistics solutions, including FOB and CIF terms. We ship via Sea Freight (for bulk industrial orders), Air Freight (for urgent project needs), and International Express (DHL/FedEx/TNT) for smaller components or samples.
Q4. How can I get a quote for customized products?
Since a significant portion of our business involves specialized engineering, pricing is tailored to your specific technical requirements. To provide an accurate quote, please provide the following details: Technical Drawings or Sketches, Application Environment, Quantity, Special Requests. Our engineering team typically reviews and responds to custom inquiries with a formal quotation within 24–48 hours.
Q5. What is your payment?
TT / Paypal / Western Union / LC / Credit Card etc. are all available to us.
