The 3M CR70 is a popular, high-performance automotive window film known for excellent heat rejection (around 50-60%) and near-complete UV protection (99.9%), using nano-ceramic technology for clarity, less glare, and signal-friendly performance, making it ideal for windshields and front windows for a cooler cabin and better comfort without a dark tint. Key Features & Benefits:High Heat Rejection: Keeps car interiors significantly cooler by blocking solar heat.UV Protection: Blocks 99.9% of harmful UV rays, protecting occupants and preventing interior fading.Clarity & Glare Reduction: Offers excellent visibility and reduces glare from headlights and sun, improving night driving.Signal Friendly: Non-metallized construction ensures it doesn’t interfere with GPS, mobile phones, or satellite radio.Nano-Technology: Uses advanced multilayer optical film and ceramic nano-technology for high performance. Performance Metrics:Visible Light Transmission (VLT): 70% (allows 70% of visible light in).Heat Insulation Rate: Around 50-60%.UV Blocked: 99.9%. Ideal for:Windshields (front glass) where high clarity and maximum heat/UV protection are desired.Those wanting strong performance without a very dark tint. Considerations:It’s a premium film, often more expensive than other options.Ensure professional installation by authorized 3M dealers for best results and warranty.
Key Technologies & Types:
Ceramic Films: Use ceramic particles to effectively block heat without significantly darkening the glass, ideal for clarity and performance.
Carbon Films: Carbon-based layers also block heat and glare, offering good durability and privacy.
Metalized Films: Highly effective at heat reflection but more reflective (mirrored) than ceramic or carbon.
Nano-Ceramic IR Films: Incorporate organometallic nanoparticles for extremely high heat rejection (up to 99% IR rejection).
Top Brands & Examples:
HITECH Crystalline: Uses multi-layer optical film technology to reject significant heat while remaining virtually clear, a premium choice.
Hi-Tech: Offers RTO-compliant films like “Ice Cool Shield” for extreme heat and “Arctic Cool Shield” for all-season comfort.
Solar Gard: Known for high-performance sun control films with advanced heat and UV blocking.
Llumar: Offers various series (like Stratos, AIR) with different heat rejection and clarity levels.
This video explains the benefits of HITECH Crystalline film: