What are the methods for choosing automotive explosion-proof film?
4 Answers
Automotive explosion-proof film should be selected based on the following methods: choose a film with good light transmission that does not obstruct visibility. The functions of explosion-proof film include: 1. Heat insulation and cooling: It can reduce the overheating phenomenon inside the car caused by sunlight exposure, keeping the interior cool while also reducing air conditioning consumption; 2. UV protection: While ultraviolet radiation has sterilizing effects, it can also harm human skin. Explosion-proof film effectively blocks UV rays, protecting passengers' skin; 3. Preventing glass cracking and interior fading: Besides harming the owner's skin, prolonged direct sunlight can cause the car's interior to crack and fade. Explosion-proof film also helps maintain the car's interior and prolong its service life.
When choosing automotive explosion-proof film, I prioritize practical performance. First, visit an authorized store to test the heat insulation effect: place a sample under a heat lamp and feel the temperature difference with the back of your hand through the film. A good film should provide a noticeable heat-blocking sensation. The light transmittance of the front windshield should not be less than 70%, otherwise, it won’t pass the annual inspection and will affect nighttime visibility. Choose a UV blocking rate of over 99% to protect the interior from fading. The shade of color depends on personal preference—I prefer light gray as it doesn’t obstruct rearview mirror visibility. Opt for a brand that uses magnetron-sputtered metal film, which has a strong magnetic attraction and won’t interfere with mobile phone signals. It’s best to choose a branded film with a warranty card, where the electronic warranty can be verified by scanning a QR code, to avoid being sold outdated products. For installation, find a professional shop with a dust-free environment, and avoid opening windows for three days after application to prevent displacement.
As a car owner, here are some tips to avoid three common pitfalls when choosing window films. First, don't cheap out on no-name brands – the generic film I used last time bubbled and faded within two years. Now I prioritize authorized dealers of mainstream brands like LLumar and 3M, which typically last 5-10 years. Second, always test specifications practically – have the shop demonstrate heat rejection by shining an infrared lamp on samples while you feel the difference firsthand. Third, aim for the 1.5-2mil sweet spot in thickness; too thin won't withstand intense sun, too thick is hard to install properly. For the windshield, opt for light-colored high-transparency films (minimum 70% VLT), while side/rear windows can be slightly darker. After installation, make sure to get a complete digital warranty certificate that allows mobile verification of authenticity.
Focus on four key metrics: UV rejection rate must exceed 99% to protect skin; total solar energy rejection should be in the 45%-65% range, as higher rates may affect signals; visible light transmittance of 70% for the windshield and 50% for side windows is recommended; internal reflectance should be kept below 10% to prevent glare. Have the shop conduct on-site testing. Prioritize nano-ceramic films for better heat dissipation and no interference with ETC signals. Choose authorized shops with dust-free workshops and pay attention to bubble and edge treatment during installation. Dark tint films require anti-glare rearview mirrors, and remember to roll down windows during annual inspections to avoid issues.
