Does Car Film Continuously Release Formaldehyde?

[DelCamilla]

Car film does not continuously release formaldehyde; it typically dissipates within about half a month. Classification of car films: 1. Composite process film: Its main function is to block intense sunlight. This is an earlier type of car film, which basically lacks heat insulation capabilities. It was initially called sun paper or tea paper. 2. Dyed film: Most dyed car films on the market use deep-dyeing techniques, incorporating heat-absorbing agents through deep-dyeing methods to absorb infrared rays from sunlight for heat insulation. However, since it also absorbs visible light, the visible light transmittance is insufficient, and due to inherent process limitations, the clarity is relatively poor. 3. Vacuum thermal evaporation film: This type employs vacuum thermal evaporation technology, where an aluminum layer is evaporated onto the substrate to achieve heat insulation effects.