Custom Optical Grade MDO Silicone Roller for BOPET Film Lines

The AstraRoll Custom Optical Grade MDO Silicone Roller is a peak-precision backup nip component developed specifically for optical-grade BOPET, BOPP, and functional multi-layer film orientation lines. Positioned directly within high-heat, high-tension stretching zones, this roller utilizes premium imported liquid silicone rubber (LSR) to withstand severe mechanical pressure and extreme temperatures without experiencing geometric sagging or structural degradation.

Engineered through an automated monolithic molding process, the roller face is completely seamless, non-porous, and free of microscopic parting lines. This prevents the transfer of surface defects or "orange peel" textures to sensitive optical sheets, guaranteeing absolute cosmetic uniformity and zero film haze for high-end display applications.

Technical Parameters

Surface Elastomer: Premium Imported Platinum-Cured Liquid Silicone Matrix

Surface Topography: Pore-Free Smooth Finish (Ra ≤0.1μm to 0.2μm)

Core Base Shaft: Forged 42CrMo Alloy Steel / Heavy-Wall Seamless Tube Core

Hardness Spectrum: 60 Shore A - 85 Shore A (±3 Shore A strict tolerance)

Elastic Rebound Rate: ≥80% (High structural memory under cyclic nip loading)

Thermal Operating Envelope: Continuous, deflection-free performance up to +250℃

Total Indicator Runout (TIR): ≤0.005mm (Achieved via synchronized CNC grinding)

Applications

BOPET Optical Film Stretching: Serving as the master backing nip roller in MDO sections for polarizer protective films, diffusion sheets, and backlight display substrates.

High-Clear Packaging Film Lines: Providing uniform web holding and compression for high-velocity BOPE, BOPA, and technical PET packaging lines.

Lithium-Ion Battery Separators: Guiding and nipping functional micro-porous polyolefin films requiring precise speed and tension synchronization.

Why Choose AstraRoll's Optical Grade MDO Silicone Roller?

Premium Imported LSR with High Elastic Rebound: Formulated with high-purity imported liquid silicone that delivers excellent elastomeric memory. The roller quickly recovers from continuous cyclic loading without developing permanent deformation or flat spots, ensuring unvaried pressure distribution.

Pore-Free Seamless Finish for Zero Cosmetic Defects (Ra ≤0.1μm): Any microscopic voids or parting seams on a silicone roller will imprint visual defects on heated optical films. AstraRoll applies an advanced injection molding method that yields a completely homogeneous, pore-free face, polished to Ra≤0.1μm to ensure a flawless film cosmetic profile.

Zero-Bleed Formulation Prevents Film Contamination: Conventional silicones sweat low-molecular-weight silicone oils when exposed to continuous process heat, creating oily splotches that ruin downstream optical coating adhesion. Our platinum-catalyzed addition-cure network achieves a completely cross-linked matrix, securing absolute chemical purity.

Sub-Micron Concurrent Grinding Precision (≤0.005mm Runout): High-velocity film drawing demands near-perfect concentricity to prevent periodic tension waves and gauge defects. We grind the alloy steel core and the LSR sleeve together in a single, synchronized CNC cylindrical process, locking total indicator runout to ≤0.005mm.

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.