The reflective properties of Mylar (BoPET) film depend on various factors, including its thickness, the presence of a metallic coating, and the specific wavelength range of interest. While Mylar film can exhibit reflective properties, it is important to note that the exact specifications may vary based on the specific product and manufacturer.
Regarding the claim of reflecting 99% of visible light and infrared rays in the wavelength range of 400 to 3000 nanometers as mentioned on Wikipedia, it's essential to be cautious about relying solely on a single source of information. Wikipedia can be a useful starting point for general information, but it is always recommended to verify the information from multiple reliable sources.
Metal coatings on Mylar film can be made from various materials, including aluminum or silver. These metals are commonly used due to their high reflectivity in the visible and infrared regions. However, the specific metal used and its thickness will also affect the reflective properties of the film.
To obtain accurate information about the reflective properties of a particular Mylar film product, it is best to consult the manufacturer's specifications or reach out to the manufacturer directly. They can provide detailed information about the film's reflective capabilities, including the specific wavelength range and the percentage of light and infrared radiation that it reflects.