Manufacturing process and material composition of glass window film
Window film's ability to block infrared and ultraviolet rays relies primarily on its special manufacturing process and material composition. Here are a few common ways
1. Metallized Coating.
Some window films are coated with a thin layer of metal, such as silver, aluminum or copper, that reflects infrared and ultraviolet rays. When these radiations from the sun try to pass through the glass, the metallic coating will reflect them back, thus reducing the amount of heat transmitted into the room 2. Absorbents.
Other types of window films will contain chemicals that absorb UV and some infrared rays. These absorbers are added to the film, and when sunlight hits these substances, they absorb and convert a small portion of the light energy into heat, thus reducing the amount of heat transferred into the room.
3. Sandwich design: Composite structure of the window film consists of multiple layers of material, each of which reacts differently to different wavelengths of light. By adjusting the nature and thickness of each layer, it is possible to design a window film that has a blocking effect on specific spectral components.
4.Nanotechnology.
Modern high-end window films may utilize nanotechnology to control the passage of light. For example, nanoscale particles are incorporated into the film that scatter or absorb specific wavelengths of light, including infrared and ultraviolet.
5. Low-E (Low-E) Coatings:Low-E coatings are special metal oxide coatings that reflect far-infrared rays, thereby reducing indoor heat loss due to radiation. This coating is commonly used to control the need for warmth in the winter and cooling in the summer. Through the above methods, window films can significantly reduce the infrared and ultraviolet rays from the sun's rays into the interior of a building, which in turn helps to improve indoor comfort, reduce air conditioning loads, and reduce energy consumption. At the same time, these window films can also help to reduce fading of furniture, flooring, and other indoor items caused by prolonged exposure to strong sunlight.
