Why is the glass surface of the glass after the glass film?
On the contrary, not film or paste the poor quality of the membrane temperature is always difficult to come down, because the outside of the heat continue to come in, and the car's air-conditioning constantly out. Posted a good film winter insulation is the principle.
Another place in the car will have the heat to enter: such as under the shock, the sun long time the roof will be heat transfer in. In a word, any car sticks any film in the hot sun exposure for more than 50 minutes, the temperature inside the car and the outside is almost the same. But posted a good quality film only need to play for a while air conditioning temperature will soon come down.
This is normal. The car is feeling hot because the outside temperature is too high, the heat into the car (heat conduction there are three ways we should all know the sprinkle). Although the film posted film, film insulation rate is only a few percent, when the outside temperature is higher than the temperature inside the car, a part of the heat will enter the car.
Because the metal layer in the insulating film absorbs heat, the temperature on the film is relatively high
As for the touch of the outside of the glass is also normal hot. Because the film, the film has the role of blocking heat, the original should be transmitted through the glass into the car by the heat of the sun film barrier in the outer layer of the membrane, that is, the glass, a long time the heat gathered in the glass on the more, plus On the sun has been illuminated, the heat on the glass out of the slow speed, so touch the film is not hot than before some.