Overview of Special Function Films

This document details various special function films designed for glass surfaces, including low-reflection films, anti-fingerprint films, and super-hydrophilic films. These films aim to reduce glass reflections, prevent dirt and fingerprints, inhibit bacterial growth, and minimize water droplets and fogging on glass.

1. Low-Reflection Films

Purpose and Benefits

• Reduce visible light reflection on glass surfaces, significantly lowering glare and improving visibility.
• When applied on both sides of glass, reflection rates can be reduced from approximately 8% to as low as 0.4%.
• All low-reflection films maintain high transparency with visible light transmittance above 92%.
• Applications include showroom glass, display cases (e.g., insect specimens), and aquarium tanks.

Key Products and Features

Application Note: For optimal reflection reduction, films must be applied on both sides of the glass since reflections occur at both glass boundaries. Single-sided application or application on inner layers of laminated glass reduces effectiveness.

Additional Features

• UV cut rates up to 99% protect interiors from ultraviolet rays.
• Anti-scattering properties enhance safety.
• Some products include hard coatings for scratch resistance.

2. Anti-Fingerprint Films

• Provide anti-fouling, anti-fingerprint, and antibacterial functions.
• Surface is coated with hydrophobic and oleophobic layers, making fingerprints and dirt easy to wipe off.
• Hard coat layers protect the film from scratches during cleaning and maintenance.
• High transparency ensures the film is visually unobtrusive.
• Micro-adhesive versions allow easy removal and replacement.

3. Super-Hydrophilic Films

• Reduce water droplets and fogging on glass surfaces, improving visibility in humid environments such as bathrooms and aquariums.
• Water spreads evenly on the surface instead of forming droplets, maintaining clear sightlines.
• Hard coat layers protect against scratches during cleaning.
• Micro-adhesive versions facilitate easy removal and replacement.

4. Product Specifications Summary

5. Optical and Thermal Properties

• Visible light transmittance ranges from 85% to 93%, depending on the product.
• UV transmittance is generally below 1% for most low-reflection films, except SF-3000H which has higher UV transmittance (~58%).
• Solar heat absorption ranges from 8.5% to 11%, with solar heat transmittance around 81% to 92%.
• Thermal transmittance (U-value) is approximately 6.0 to 6.1 W/m²·K.

6. Usage and Installation Guidelines

• Films without outdoor use indication are for indoor application only.
• Designed specifically for glass and mirrors; for resin substrates, a special base film (G-401) is recommended.
• Installation temperature should be between 10°C and 30°C.
• Care must be taken to avoid scratches during installation due to special coatings.
• Water or moisture used during installation may cause temporary fogging or bubbles that dissipate over time.
• Post-installation maintenance should use soft microfiber cloths and mild neutral detergents; avoid commercial cleaners or solvents.
• Masking tapes or adhesive sheets should not be applied over the films as they may damage surface functionality.
• Removal of films may leave adhesive residue depending on environment.

7. Maintenance Recommendations

• Use dedicated alkaline ionized water (product code SF-AW500) and microfiber cloths (SF-MFPSF-1000) for cleaning low-reflection films.
• Do not use commercial cleaners or solvents to avoid damaging the film surface.
• For films with seams, clean along the seam lines to prevent damage.

8. Additional Notes

• Some products incorporate Mitsubishi Chemical's "Mosmite TM" base film technology for enhanced performance.
• Anti-bacterial activity is confirmed against Staphylococcus aureus and Escherichia coli with values exceeding JIS Z2801 standards.
• Videos demonstrating anti-reflection, anti-fingerprint, and super-hydrophilic effects are available on the company website.

Contact Information

Head Office: Tokyo, Japan
Osaka Sales Office: Osaka, Japan
Fukuoka Sales Office: Fukuoka, Japan
Website: https://nakagawa.co.jp