Some car owners recently reported that the car window film that they asked about in some of their stores is cheaper than the thick one we have, so the thicker the car window film, the better? Let's analyze it for you today!
First of all, we have to make one thing clear, different products and different types of films can not be compared, automotive window film in the development process has several production processes, basically can be divided into dyeing film, single-layer metal reflective film, heat-absorbing film and magnetron sputtering film these four, of which dyed film and single-layer structure metal with reflective film has the most obvious drawbacks, so it gradually lags behind the mainstream of the market. Only for the more common heat-absorbing film and magnetron sputtering film on the market, the heat-absorbing film needs to add heat-absorbing glue in the middle of the film, so the problem of different thicknesses often cannot exceed the magnetron sputtering film.
The heat-absorbing film is mainly to use the sponge-like thing in the membrane to absorb heat, when the absorbed heat reaches saturation, it will not play the effect of heat insulation, so the function of the heat-absorbing film is limited, and the heat insulation is also short-lived, and the magnetron sputtering film can continue to heat insulate, the effect of these two films is obviously different, so it is not possible to compare the thickness with two different membranes, such a comparison is completely meaningless.
Even if it is the same type of film, the high thickness is not the same as the low thickness of the quality, because in fact, the quality of the film mainly depends on the raw materials and processes made, only in terms of magnetron sputtering film, high-quality automotive window film through the process of magnetron sputtering process, indium oxide, gold, silver and other precious metals sputtered onto the substrate, indium oxide can ineffectively add infinite light penetration, atoms can reflect infrared rays to the maximum extent, gold atoms can stabilize metal activity, so car window film can ensure high clarity while high heat insulation.
In the same magnetron sputtering process, only indium oxide with a higher melting point and lower price can be used instead of indium oxide, and the disadvantage of a high melting point is that it is easy to burn out the substrate, so the thickness of the substrate needs to be doubled in order to retain the atoms at higher temperatures, resulting in a thicker window film.
It can be seen that the thickness of the car window film does not indicate the quality management of it, and may even be counterproductive. Generally speaking, like in winter, heavy military coats and light down jackets can also keep warm, but most of them will choose the latter, because the down jacket has a higher technological content and a better wearing experience.
