[China Glass Network] How to prove the case, there is no street light, the feeling of the headlights is not a problem, the car film? In fact, we can do a comparison test and drive a car on the same road. If you think the headlights are no problem, then we can consider their tear film and feel it.
In fact, as long as a professional car film automotive film friends know the existence of this market, the phenomenon of light concealing. Transmitting of automotive film has become concealed, mainly because the film is difficult to pass the standard of the car, especially in the car film market, through the prevalence of counterfeit, high imitation automotive film in the interests of the drive.
The role of the car's solar film is to reduce the temperature inside the car. Its technical difficulty lies in high transmittance, and the infrared thermal barrier will be affected. So, what should the transmittance of solar film be kept? In order to ensure a balanced driver's visibility and its internal temperature? When you open the main movie website, we can clearly see the parameters, the "visible windshield is 75%" front windshield film product, etc. ", 72% visible light transmittance". We checked the film's controversy for many brands, and almost all automotive glass films claim 70% light transmission, mainly due to 70% light transmission to ensure safe driving. The trap is here. The 70% light transmittance of the glass film is then applied to the automotive glass, and the light transmittance is much lower than the Chinese national standard GB9656-2003 (automobile safety glass) with a light transmittance of 70%. However, in almost all automotive markets, the solar film is promoted by the transfer of wood, such as light transmittance, marketing.
In a parking lot, we found any automotive glass with a light-transparent professional inspection device. It was found that the windshield of the film-free Audi car reached 75%, which fully met the national standard requirements; before that, the film on the windshield of another Audi car was only 37%. There is a world of difference in light transmission between the two. The transmittance of the light transmission of another former Ford windshield film was only 30.1%.
And it can protect the privacy of the glass film on the car interior side, and it can be imagined to reduce the light transmittance by 8.7%. At present, Beijing has required that the glass film on the side of the car must leave room for the driver's rearview mirror to view, and it cannot completely cover the entire glass, just to ensure safe driving.
Obviously, there are many automotive solar films in the market, and we can't solve the contradiction that "the conditional non-insulated transmission rate can be heated to the point where it can't be inverted."
At present, there is no standard for automotive glass film on the market, so it is a glass film manufacturer that steals the column and claims that the light transmittance can reach 70% or more. And this standard applies to the light transmittance of automotive glass, regardless of its foil.
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