[China Glass Network] 1. How fragile is the car glass? Do you know?
First of all, we must be clear that the front windshield film is necessary, but don't be obsessed with the film sent by the 4s shop! Here, we must say a big "hard" to the front windshield of the car.
How fragile is the glass, do you know? According to incomplete statistics by insurance companies, about 10 million pieces of auto glass need to be replaced every year, and an average of 3 pieces of glass is damaged every year! The number of casualties caused by the front glass being penetrated every year is thousands! When the car is driving at 70 km/h and flying 500 g of hard material, it will pass 100% through the front windshield! The tragedy caused by this characteristic of the front windshield is numerous.
Maybe someone will ask, why not strengthen the glass? Because of international standards! When an accident such as rear-end collision occurs, the human head is likely to hit the glass, and the front windshield will be broken to absorb energy or escape. This standard is a double-edged sword that protects the human head and facilitates escape, but does not enable the glass to resist strong intrusion of foreign objects. Based on this trait of automotive glass, we must film.
2. What kind of film is attached?
According to experts, "window film, especially the film on both sides of the front row, the substrate should be clear enough. Even if the color is darker, the scene that is seen should be clear and not dim." According to relevant regulations, the front of the car The overall light transmittance of the glass should be 70% or more. According to the formula of the windshield transmittance × car film transmittance ≥70%, it can be known that in order to reach the standard in the current front bump light transmittance of 75%-80%, the front glass film is transparent. The rate needs to reach more than 90%.
The threat of unidentified flying objects and the complicated road conditions in the country put high demands on the automobile glass: the external armed forces become a strict barrier and provide escape routes internally. This problem is currently only solved by posting a safety film. The popular solar film (insulation film) in recent years cannot meet these needs. In the choice of safety film, it is recommended that you choose a brand with quality assurance.
In short: the film should be filmed; the film can be light-transmitted and insulated against foreign objects; the security film, do not stick to the solar film, the price is similar, but the performance is very different.
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