Introduction
The Lucky KPCW1 Solar Backsheet represents a significant advancement in photovoltaic (PV) module technology, offering superior protection against harsh environmental conditions. Developed by Baoding Lekai International Ltd. (English: Baoding Lekai International Ltd.), this product is engineered to meet the demanding requirements of modern solar energy systems. With its innovative design and rigorous quality control, the KPCW1 backsheet ensures long-term performance and reliability in diverse climates and applications.

Product Overview
The Lucky KPCW1 Solar Backsheet is a high-performance material designed to serve as the protective layer of PV modules. Its primary function is to shield the internal components of solar panels from environmental stressors such as ultraviolet (UV) radiation, moisture, and extreme temperatures. The product is particularly suited for utility-scale solar farms, commercial installations, and regions with challenging climatic conditions.
- Outstanding environmental resistance
- Reliable bonding system
- Strict quality control measures
- Wide range of applications

Environmental Resistance: A Barrier Against Nature’s Challenges
The KPCW1 backsheet is equipped with a PVDF fluoropolymer weather-resistant layer, which provides exceptional protection against environmental degradation. This advanced material is formulated to withstand the harshest conditions, ensuring the longevity of PV modules.
1. UV Protection
The PVDF layer blocks over 95% of UV radiation, preventing the degradation of the underlying materials. This feature is critical for maintaining the efficiency and structural integrity of solar panels, especially in regions with high solar irradiance.
2. Temperature Adaptability
The backsheet maintains stable performance across a wide temperature range, from -40°C to 85°C. This adaptability ensures reliable operation in both extreme cold and heat, making it suitable for diverse geographic locations.
3. Weather Durability
Passing the 3000-hour dual 85 (85°C/85% RH) aging test, the KPCW1 backsheet demonstrates exceptional resistance to prolonged exposure to high humidity and temperature. This certification underscores its suitability for tropical and coastal environments.
4. Chemical Resistance
The material effectively resists acids, alkalis, solvents, and salt spray. This chemical resilience is vital for solar installations in industrial areas or coastal regions where exposure to corrosive substances is common.
5. Mechanical Properties
After damp heat aging, the backsheet retains over 90% of its tensile strength, ensuring structural stability under prolonged environmental stress. This mechanical durability reduces the risk of cracks or deformations, enhancing the lifespan of PV modules.

Reliable Bonding System: Ensuring Long-Term Performance
The KPCW1 backsheet features a fluorinated coating cured adhesive layer, which has been rigorously tested to ensure long-term reliability. This bonding system is critical for maintaining the integrity of the PV module and preventing delamination under adverse conditions.
- Peel Strength: The bond with EVA exceeds 60 N/cm, ensuring strong adhesion between the backsheet and the encapsulant material.
- Interface Stability: Thermal aging tests confirm the system’s ability to maintain stability, reducing the risk of performance degradation over time.
- Thermal Cycling: The backsheet remains intact after thermal cycling tests, demonstrating resilience to repeated temperature fluctuations.
- UV Resistance: Passing the 200 kWh/m² UV accelerated aging test, the material retains its protective properties even after prolonged exposure.
- Humid Environments: The bond strength remains above 85% in humid conditions, ensuring reliable performance in high-moisture areas.
The combination of these features ensures that the KPCW1 backsheet provides a durable and reliable solution for PV module manufacturers and installers.
Strict Quality Control: Ensuring Consistency and Excellence
Baoding Lekai International Ltd. maintains rigorous quality control processes to ensure that every batch of KPCW1 backsheet meets the highest standards. These measures include:
- Raw Material Inspection: Comprehensive testing of all raw materials to ensure compliance with specifications.
- Production Monitoring: Real-time monitoring of key production parameters to maintain consistency.
- Appearance and Dimensional Inspection: 100% inspection of finished products for defects and dimensional accuracy.
- Accelerated Aging Tests: Regular sampling for accelerated aging tests to predict long-term performance.
- Traceability Records: Detailed records of product quality for full traceability.
These stringent quality control measures ensure that the KPCW1 backsheet delivers consistent performance and reliability across all applications.
Wide Range of Applications: Versatility for Diverse Environments
The KPCW1 backsheet is designed for use in a variety of environments and applications, including:
- Utility-Scale Solar Power Plants: Ideal for large-scale installations where durability and performance are critical.
- Commercial and Industrial Distributed Projects: Suitable for rooftop and ground-mounted systems in urban and industrial areas.
- Coastal Areas with High Humidity: Resistant to salt spray and moisture, making it ideal for coastal regions.
- High-Irradiation Desert Regions: Capable of withstanding extreme temperatures and intense sunlight.
- Regions with Large Temperature Variations: Maintains performance in areas with significant day-to-night temperature swings.
The versatility of the KPCW1 backsheet makes it a preferred choice for solar projects in challenging environments.
Company Background: Baoding Lekai International Ltd.
Baoding Lekai International Ltd. is a leading manufacturer and supplier of high-quality solar backsheet materials. With a commitment to innovation and excellence, the company has established itself as a trusted partner in the photovoltaic industry. Their expertise in material science and manufacturing processes ensures that their products meet the evolving needs of the solar energy market.
As a solar backsheet manufacturer, Baoding Lekai International Ltd. offers a comprehensive range of solutions, including polymeric backsheet and solar backsheet material. The company’s dedication to research and development has led to the creation of advanced products like the KPCW1 backsheet, which sets new standards for performance and reliability in the industry.

Product Specifications Table
| Feature | Specification |
|---|---|
| UV Protection | Over 95% UV blocking rate |
| Temperature Range | -40°C to 85°C |
| Weather Durability | 3000-hour dual 85 (85°C/85% RH) aging test |
| Chemical Resistance | Resists acids, alkalis, solvents, salt spray |
| Mechanical Properties | Over 90% tensile strength retention after damp heat aging |
| Peel Strength with EVA | Over 60 N/cm |
| Bond Strength in Humid Environments | Over 85% retention |
Conclusion
The Lucky KPCW1 Solar Backsheet is a testament to Baoding Lekai International Ltd.’s commitment to innovation and quality. With its advanced environmental resistance, reliable bonding system, and strict quality control, this product is designed to meet the demands of the global solar energy market. Whether deployed in arid deserts, humid coasts, or regions with extreme temperature variations, the KPCW1 backsheet ensures the long-term performance and reliability of PV modules.
For more information about the KPCW1 backsheet and other products from Baoding Lekai International Ltd., visit their official website.

References
1. National Institute of Standards and Technology (NIST). (n.d.). https://www.nist.gov. Retrieved from NIST’s official website.
2. Baoding Lekai International Ltd. (n.d.). https://www.lkintl.com. Retrieved from the company’s official website.
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