Why Does Color Change Film Fade?
2 Answers
Color change film fades due to PVC and ultraviolet radiation. PVC: Because PVC contains plasticizers, they will separate from the PVC at certain temperatures. This separation occurs vertically, and the adhesive layer at the bottom of the film will detach from the film surface due to the separation of plasticizers. When removing the film, the film surface is peeled off, but the adhesive is left directly on the car paint surface. This is the reason for the "adhesive failure" phenomenon in paint protection film or color change film. Ultraviolet Radiation: One of the important factors causing film discoloration is ultraviolet radiation, which damages dyes and pigments. Higher-quality films contain high-performance UV absorbers that can prevent UV damage for a long time. Over a certain period, the film's color will slightly weaken because it absorbs and blocks UV rays that damage the interior. Metallic films maintain their appearance longer because metal does not fade. In fact, the depth of car film color does not significantly affect sun protection; it is mainly a psychological factor. Since the film is insulating, the primary protection comes from the heat barrier layer, not the dye layer. Additionally, the film should have high light transmittance and clarity to ensure visibility and safety during driving.
After applying a color-changing film to my car, I also encountered fading issues. I consulted several professionals and learned the main reasons. UV exposure is the biggest enemy; prolonged sun exposure causes the pigments in the film to break down, especially vibrant colors like red and blue, which fade faster. Last summer, I parked my car outdoors for two months, and the film surface developed uneven color patches. Washing the car too frequently or using strong alkaline detergents can also damage the top coating, leading to a whitish film surface. Another issue is improper adhesive layer application during installation, allowing rainwater to seep in from the edges, causing moisture erosion and underlying fading. Lastly, poor-quality films with substandard dyes can start discoloring within six months. It's recommended to apply a film protectant every three months and avoid washing the car during midday heat.
