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.

[LaNaomi]

Car films typically do not continuously release formaldehyde; significant release occurs mainly during the initial stage. I had this experience when I first applied the film—new films contain adhesives and chemical coatings, and the strong smell right after application is due to formaldehyde off-gassing. This substance is part of volatile organic compounds (VOCs), and its release increases with higher temperatures. However, the release rate drops rapidly over time, usually becoming undetectable within a few weeks to months. It's advisable to ventilate the car frequently after applying a new film, especially by driving with windows open during hot summer days. If concerned, opt for products labeled with low-VOC certifications, as these have short-term but manageable health impacts. Overall, it’s not a permanent issue, so you can use it with peace of mind.

[Byron]

Right after getting the window tint installed, the smell in my car was unbearable – definitely formaldehyde, it stung my eyes. But it doesn’t keep releasing like that forever. Over time – mine’s been nearly six months now – I can’t detect any odor anymore. The main release happens during the initial period after installation, with the first two weeks being the worst as residual chemicals from the manufacturing materials evaporate. Ventilation is key – I used to roll down the windows for 30 minutes daily, and the smell faded noticeably. Long-term, high-quality films release negligible amounts. Don’t worry too much, just opt for reputable brands for safety.

[LaIvan]

Formaldehyde emission is a common issue with car window films, but it's not continuous. Newly installed films have higher emission rates, potentially causing headaches or respiratory discomfort. These volatiles originate from manufacturing materials like adhesives and coatings. The emission process is short-term, significantly decreasing after a few weeks. For health safety, prioritize low-VOC certified films and ensure proper ventilation after installation to avoid enclosed environments. This effectively reduces risks without needing to fear permanent presence.