HRI Coated Films

R2R High Refractive Index (HRI) Films

Our Roll-to-Roll (R2R) High Refractive Index (HRI) coatings deliver precision-engineered optical films produced through advanced vacuum-chamber PVD (Physical Vapour Deposition). Using controlled deposition of high-index materials such as TiO₂, ZnS, and other specialised oxides, we create uniform, ultra-clean coatings tailored for demanding optical, security, and industrial applications.

With a tightly controlled vacuum metallisation environment, we ensure exceptional layer quality, high adhesion, and consistent refractive performance across the full web width—ideal for high-volume production or specialised development runs.

Applications of HRI Film

HRI-coated films are used widely across industry due to their enhanced optical response and compatibility with micro-structured surfaces, including:

Document security & identity protection

– Diffractive and refractive security features
– Overt and covert anti-counterfeit elements
– Security threads, patches, and laminates

Optical and photonic components

– Light-management films
– Reflective and anti-reflective stacks
– Waveguides and coupling layers
– High-index coatings for holographic and diffractive elements

Display & imaging technologies

– Contrast-enhancement layers
– Brightness-improvement films
– Light-guide and diffuser systems

Specialised industrial uses

– Sensors and imaging systems
– Thin-film interference structures
– Technical laminates and conversion coatings

Why Choose Our HRI Films

• Roll-to-roll capability for high-volume or pilot-scale production
• Ultra-uniform PVD coatings across PET, PC, and speciality web substrates
• Customisable refractive index based on material and thickness specification
• Precise optical control for colour, transmission, and interference effects
• Ideal for micro-structured films, especially MLAs requiring exact optical alignment
• Flexible development support, from early R&D trials to scaled production

Whether you require HRI layers for advanced document security features, optical performance enhancement, or specialised technical films, our R2R vacuum-deposited coatings provide the precision, consistency, and scalability needed for next-generation products.