Product Specification

Product Overview

The Westglass Thermochromic Sunshade PVB Materials Laminated Film Series serves as a core interlayer material for dry-process laminated glass, composed of 80% high-purity polyvinyl butyral (PVB) resin and 20% photothermal-responsive polymer nanomaterials. Formed via high-temperature/high-pressure processing at 120℃–140℃, this smart film uses a 25°C baseline to enable reversible dynamic switching between high-transparency (light transmittance ≥80%) and shaded (blue/gray, light transmittance ≤30%) states through thermally reversible phase changes in nanomaterials—no electricity required. It regulates light and heat while retaining the strong adhesion (≥5N/mm²), explosion resistance, and noise reduction properties of traditional PVB interlayers.

With a unique formulation, it supports customization of multiple color schemes and thicknesses (0.38mm–1.52mm), bonding seamlessly with float, Low-E, and tempered glass to create smart laminated glass that integrates color-changing shading, thermal insulation, and safety protection. Ideal for curtain walls, automotive glass, and sunrooms, it delivers zero-energy smart thermo-optical management for modern architecture and transportation.

Why Choose Westglass?

• 8 Years of Global Expertise: Trusted exporter with proven experience serving 50+ countries in Europe, North America, the Middle East, and Southeast Asia.
• Stringent Quality Control: 100% full inspection of all rolls to ensure thickness tolerance ≤±0.02mm and defect-free performance.
• Flexible Customization:
  • Packaging: Custom boxes, logo printing, and width adjustment (500mm–3000mm).
  • Technical Parameters: Thickness, light transmittance, color palettes (clear/blue/gray), and functional layer combinations (soundproof/thermal insulation).
• Rapid Service:
  • Professional after-sales team for technical guidance and bespoke solutions.
  • Expedited delivery: Non-custom sizes ship in 1–3 business days; custom orders fulfilled in 15 business days.

Core Advantages

1.      Intelligent Thermo-Optical Adaptation

• Dynamic Temperature-Responsive Technology:
  • Low-Temp Transparency (<25°C): Maintains high clarity (≥80% transmittance) for maximum natural light and winter heat retention, reducing heating loads.
  • High-Temp Sunshade (≥28°C): Auto-darkens (≤30% transmittance), blocking 85%+ near-infrared rays (780–2500nm), lowering indoor temperatures by 3–8℃ and AC energy use by 30%–50%.
  • Wide Response Range: Operates in -20℃–80℃ with smooth, uniform color transitions.
• Visual Temperature Monitoring: Color intensity reflects ambient temperature (e.g., light sky blue at 25°C, deep sea blue at 35°C), providing real-time alerts for industrial equipment monitoring and greenhouse climate control.

2.      Safety & Energy Efficiency

• 99% UV Protection: Polymer UV absorbers block 200–400nm rays, extending the lifespan of furniture, leather seats, and interiors by 50%+ by preventing photodegradation.
• Broadband Noise Reduction: 0.76mm thickness reduces mid-low frequency noise (50–500Hz) by 25dB+, integrating soundproofing with dimming for airport-adjacent buildings and luxury car cabins.
• Explosion-Proof Impact Resistance: Strong adhesion (≥5N/mm²) keeps shattered glass fragments bonded, preventing injuries. 1.14mm architectural film withstands Typhoon Class 12; 0.76mm automotive film meets FMVSS 205 impact standards.

3.      Durability in Extreme Environments

• All-Weather Performance: Passes -40℃–85℃ thermal cycles and high humidity (RH≥95%) tests with no delamination or yellowing (ΔE≤2), proven in Middle Eastern heat and Nordic cold for 5+ years.
• Decade-Long Lifespan: Matches building service life (10+ years) and vehicle design cycles (10 years), outlasting standard sunshade films and reducing replacement costs.

4.      Premium Optical Clarity

• High-Transparency & Low Distortion: Clear-state haze ≤0.8% and color fidelity ≥95% ensure distortion-free views, ideal for architectural aesthetics and automotive HUD compatibility without interfering with ADAS systems.

5.      Sustainability & Self-Driven Efficiency

• Eco-Friendly Materials: Zero formaldehyde and phthalate-free, compliant with global environmental standards.
• Zero-Energy Operation: Regulates light/heat using ambient temperature alone, achieving 40%+ annual energy savings in buildings and reducing car AC runtime by 25%—no external power or controls needed.

Application Scenarios

1.      Smart Building & Energy-Efficient Glazing

• High-End Curtain Walls & Skylights:
  • Dynamic Dimming System: 0.76mm silver-gray film reduces summer AC load by 35% and winter heating costs by 20%, achieving 40% annual energy savings in office towers.
  • Safety-Meets-Aesthetics: 1.14mm reinforced film with tempered glass for airport skylights, combining Class 9 wind resistance, 30dB noise reduction, and smart dimming for comfortable terminals.
• Sunrooms & Greenhouses:
  • 0.38mm clear film adjusts light intensity in real time, protecting plants from excessive light damage in heat and ensuring photosynthesis in cool conditions for optimized growth.

2.      Intelligent Automotive Glass Solutions

• EV Sunroofs & Side Windows:
  • 0.5mm ultra-thin film (15% lighter than traditional) reduces cabin heat in EVs, cutting AC energy use by 25% and extending range by 6%; allows more sunlight in winter for passenger comfort.
  • Custom gradient gray film for luxury vehicles: Lower zone maintains high transmittance (≥70%) for driver vision; upper zone darkens with temperature (≤40% transmittance) for privacy and thermal control.
• Special Vehicle Safety Glass:
  • 1.52mm ballistic film with multi-layer glass for armored vehicles, combining temperature-adaptive dimming with bullet and fragment resistance for high-security applications.

Packaging & Storage

• Protective Packaging: Vacuum-sealed aluminum foil (VCI Class A moisture protection) with humidity indicators, standard rolls (100m/roll, 1500mm/2134mm width), custom width up to 3000mm, shipped in shock-resistant wooden crates.
• Storage Guidelines: Store at 18℃–25℃, 20%–50% humidity, away from direct sunlight. Use within 24 hours after opening; reseal unused film in a moisture-proof cabinet (humidity ≤30%) to preserve nanomaterial performance.

Redefine Smart Glazing with Westglass

Contact Us Today for custom thermochromic PVB film solutions—engineered for safety, efficiency, and innovation in every application.

Technical Parameters