What is the difference between car heat insulation film and explosion-proof film?
2 Answers
Specific differences are as follows: 1. Analysis of car sun film: Car sun film refers to the film pasted on the surface of car glass, commonly known as sun film. In addition to heat insulation and light blocking, it also has explosion-proof functions. High-quality explosion-proof film uses special polyester film as the base material, which itself has strong toughness and is combined with special pressure-sensitive adhesive. In case of accidents, the glass will not shatter and cause injury after being broken. Car explosion-proof film also has the functions of one-way perspective and reducing glare. 2. Analysis of car explosion-proof film: Car explosion-proof film is the highest level of safety film, that is, explosion-proof film products. It adds a layer of protection to car glass to prevent glass from shattering and fix broken glass fragments when colliding with the outside world, providing certain protection for the personal safety of the car owner. 3. Differences between car sun film and explosion-proof film: (1) Differences in material structure and thickness: The thickness of safety film is between 100-175 microns (about 4-7mil), while car explosion-proof film is a multi-layer polyester composite film made by special lamination process, with a thickness of more than 250 microns (about 10mil). Thickness is a hard indicator to distinguish safety film from security film. (2) Differences in protection level and concept: Sun film is mainly made of the original PET material and magnetron sputtering technology, and its function is to insulate heat and control harmful light, that is, to block infrared and ultraviolet rays. The design of explosion-proof film can absorb explosion shock waves and resist stronger energy impacts. High-end explosion-proof film combined with glass can even reach the bulletproof level, and its protection function covers the effect of safety film while reaching the level of safety explosion-proof. (3) There are obvious differences in the implementation standards: The standard that car sun film can generally achieve is the level standard of blocking ultraviolet rays, while the detection standard of explosion-proof film is based on preventing penetration, that is, when the glass is hit, the glass can be broken, but the explosion-proof glass film layer cannot be penetrated.
I've been tinkering with car films myself and have applied several different brands. Automotive heat-insulating films primarily focus on sun protection and cooling—this layer of film can block most UV rays and heat. In summer, even after the car sits in the sun for a while, it won't feel scorching hot inside, and the air conditioning burden is much lighter, saving fuel and protecting the interior. Explosion-proof films, on the other hand, emphasize safety protection. They add multiple layers of adhesive and reinforced materials on the glass surface. In case of a collision or a stone impact, even if the glass shatters, it won't scatter everywhere, reducing the risk of injury. The two serve different purposes: heat-insulating films make driving more comfortable, while explosion-proof films protect personal safety. When choosing a film, don’t just listen to sales pitches—check the label parameters yourself. A heat insulation rate of over 50% is considered decent, and for explosion-proof films, look for impact test ratings. From my personal experience, heat-insulating films are a must in high-temperature southern regions, and for those who frequently drive on highways, explosion-proof films are recommended for added peace of mind.
