Japan's Kuraray Co., Ltd. has started offering samples of a groundbreaking solar cell packaging film. This innovative thin film enhances the durability and structural strength of solar modules while also cutting costs and reducing weight. It is a thermoplastic resin known as polyvinyl butyral (PVB), capable of being formed at high temperatures. The film was developed in collaboration with the Japan Institute of Industrial Technology.
One of the key advantages of this new packaging solution is its superior sealing performance. Unlike traditional methods, it doesn’t require end-sealing to prevent moisture ingress, which reduces the stress on the module, minimizes glass bending, and maintains overall structural integrity. This innovation also eliminates the need for additional support frames or reinforcement structures.
By using this new film, solar module designs can become simpler, lighter, and more cost-effective. Additionally, compared to conventional materials, the new PVB film exhibits significantly less degradation over time, offering exceptional long-term reliability. A major challenge in the industry, known as PID (Pattern Induced Degradation), where power output decreases due to environmental factors like temperature and humidity, is now being addressed more effectively with this technology.
With growing demand for solar modules that are cheaper, lighter, and more reliable in harsh conditions, Kuraray has introduced this advanced encapsulant. It plays a crucial role in protecting internal components such as solar cells, electrodes, and wiring from moisture, physical impact, and aging. This ensures consistent performance and extended lifespan, making it a game-changer for the renewable energy sector.
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