Free technical documentation available! Anti-reflective film with light resistance achieved! Explanation focusing on the technical approach.
While walking in the city, you may come across cars with yellowed headlights, which is caused by degradation due to ultraviolet (UV) rays. The resin used for the headlight covers, such as polycarbonate, undergoes chemical changes when exposed to UV rays for extended periods. For this reason, UV protection is very important in interior design as well. Displays used in car navigation systems may also change appearance due to UV rays. Therefore, design considerations are made to prevent direct sunlight exposure by installing sunshades or adjusting the installation position and angle. Dexerials proposes anti-reflective films for automotive displays, which suppress sunlight reflection and enhance visibility. This allows for smaller sunshades and greater flexibility in installation position and angle, making interior design more versatile. This article will focus on the technical approach to the adhesive layer of anti-reflective films. *For more detailed information, please refer to the related links. Feel free to contact us for further inquiries.*
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**Experiment on the Light Resistance of Anti-Reflective Film** Our company conducted an accelerated aging experiment to investigate the light resistance of anti-reflective film by projecting strong ultraviolet light for 300 hours. We compared five samples of adhesive layers: (1) an adhesive layer without any dye, (2) an adhesive layer mixed with black pigment-based dye, (3) an adhesive layer mixed with black dye-based dye, and (4) and (5) adhesive layers with varying concentrations to change the transmittance. In the experiment, the amount of dye added was adjusted to achieve light transmittance of 74% and 53%. The reason for dividing the dyes into pigment-based and dye-based is due to the different ways particles spread when added to the material. Pigment-based dyes spread with larger particles, while dye-based dyes dissolve and spread in the resin like sugar dissolving in water. For the test, we relied on the light resistance test conditions of "DIN75220," which is widely adopted as a standard by European automobile manufacturers, and projected ultraviolet light at approximately four times the intensity. The samples were exposed to strong ultraviolet light for 300 hours, and evaluations were conducted every 100 hours. *For more detailed information, please refer to the related links. Feel free to contact us for further inquiries.*
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Dexerials Corporation has business offices and sales bases not only in Japan but also in Asia, including China, as well as in Europe and the United States. We continue to provide products with new value that meet customer needs tailored to each market. By adding new technologies to our existing products, we aim to maintain and strengthen our business. Moving forward, we will boldly challenge the automotive and life sciences sectors, steadily nurturing and expanding new businesses, while advancing the development of technologies that will pave the way for the future. As a company that creates new value that is not found anywhere else, we strive to maximize customer value and continue to challenge ourselves to become a trusted partner for our customers and society.