Product Overview

The Westglass Thermochromic Sunshade PVB Film Series is crafted from 80% polyvinyl butyral (PVB) resin powder combined with 20% photothermal polymer nano-materials, designed exclusively for safety laminated glass. Using 25°C as the baseline, the film’s base color adjusts its optical properties and color reversibly (e.g., transitioning from clear to blue/gray) in response to ambient temperature changes, while retaining the same bonding strength and safety features as traditional PVB interlayers.

Through high-temperature, high-pressure lamination, it forms a "glass-PVB-glass" composite structure, delivering four core functions: intelligent color change, explosion resistance, noise reduction, and energy efficiency. Ideal for curtain walls, skylights, windows, and other glazing applications, it integrates seamlessly with various glass types to create customizable smart safety glass for shading, thermal insulation, and energy savings.

Why Choose Westglass?

• 8 Years of Export Expertise: Proven track record in global thermochromic PVB film sales, ensuring reliable performance and industry-leading knowledge.
• Rigorous Quality Assurance: 100% full inspection of all rolls to meet strict international safety and consistency standards.
• Flexible Customization:
  • Tailored packaging, logo printing, width (500mm–3000mm), and technical parameters (thickness, transmittance, color transition temperature).
  • Customizable formulations for thickness, color palettes (e.g., blue, gray, green), and functional layer combinations.
• Exceptional Service:
  • Dedicated technical team for product selection, installation guidance, and bespoke solutions.
  • Rapid delivery: Non-custom orders ship within 1 business day for efficient project execution.

Key Advantages

1.      Smart Temperature Indication

• Visually reflects temperature changes: The film shifts color intuitively as ambient temperature fluctuates, providing clear visual cues to operators. This proactive alert helps detect anomalies early, preventing equipment failures and safety hazards in industrial settings.

2.      Energy-Efficient Thermal Regulation

• Cooling in Heat, Heating in Cold:
  • Warm Environments: Darkens to block solar heat (reducing AC load by up to 30%) and glare, maintaining comfortable indoor temperatures.
  • Cool Environments: Lightens to allow natural sunlight, cutting heating costs by enhancing passive solar gain.
• Achieves 20%–30% energy savings in buildings by minimizing reliance on HVAC systems.

3.      Superior Optical Performance

• Consistent Clarity:
  • Light State: ≥85% light transmittance ensures abundant natural light and unobstructed views.
  • Colored State: Smooth, uniform color transition (e.g., blue/gray) reduces glare while maintaining ≥30% transmittance for balanced light control.
• No color banding or patchiness—preserves architectural aesthetics in all temperature states.

4.      Reliable Stability & Longevity

• Durability Tested: Withstands 10,000+ temperature cycles (25°C–60°C) without fading, fatigue, or functional degradation.
• Extreme Environment Resistance: Operates stably in -40°C–85°C, resisting humidity (RH≥95%) and UV exposure for 10+ years—ideal for coastal, desert, and arctic climates.

5.      Wide Applicability & Custom Flexibility

• Tailored Solutions:
  • Temperature Thresholds: Customize color transition points (e.g., 20°C–30°C) to match regional climate needs.
  • Thickness Options: 0.38mm–1.52mm for applications ranging from lightweight automotive glass to high-strength architectural glazing.
• Adapts to building facades, vehicle windows, and industrial equipment monitoring with equal effectiveness.

Application Scenarios

1.      Building Energy Efficiency

• Curtain Walls & Skylights: Automatically balances light and heat in offices, hotels, and residential towers, reducing energy costs while enhancing occupant comfort.
• Windows & Doors: Eliminates glare in workspaces and homes, creating ideal environments for productivity and relaxation.

2.      Automotive Comfort & Efficiency

• Car Windows & Sunroofs: Adjusts tint in response to external temperature, keeping cabins cooler in summer and warmer in winter—reducing AC/heating load for 5%–10% better fuel efficiency in ICE vehicles and extended EV range.
• Luxury Vehicles: Enhances privacy and aesthetics with customizable color transitions (e.g., gray for subtle shading, blue for premium appeal).

3.      Industrial Equipment Monitoring

• Machinery & Pipelines: Instantly signals overheating by darkening, enabling proactive maintenance and preventing costly breakdowns in manufacturing, energy, and transportation sectors.
• Power Plants & Data Centers: Monitors temperature in critical systems, ensuring safe operation in high-heat environments.

Experience Smart Thermal Control

Contact Westglass Today for custom thermochromic PVB film solutions that merge innovation, sustainability, and safety—engineered to meet the evolving needs of modern architecture, automotive, and industrial applications.

Technical Parameters