How to identify stained film


Automotive heat insulation film, according to different material processes, can be divided into four categories. They are: dyeing film, ordinary evaporation process metal film, high-end magnetron sputtering metal film and nano optical heat insulation

Dyeing film, according to the category of materials used, can be divided into dye dyeing film and pigment dyeing film two.

How to identify stained films:

First, to check the clarity, you can compare the two membranes to look at the distance, move the membrane slowly, and see whether there is a broken line in the scene. There is also a sideways look at the membrane to see if there are orange lines like orange peels, if so, it is a relatively poor membrane. Lining the diaphragm on white paper to observe the color, the color on both sides of the diaphragm is inconsistent, it must be a dyed and aluminized composite film, not a magnetron metal film.

Second, the most important thing is to uncover the film layer and smell, whether there is a stimulating gum smell. Because the rubber layer in the inferior film contains a large number of benzene, toluene and other harmful gases, there is a large odor. The harmful substances contained in these adhesive layers will continue to be emitted with solar irradiation, which will seriously affect the health of the car owner.

Third, the color of the inferior solar film is added to the installation glue, the film is very thick, and the elasticity is poor. There is no toughness and elasticity to the touch. You can shake it, a good solar film will have a crisp sound, and even have some metallic texture.

Refer to the technical data provided by the manufacturer

Fourth, it can also be identified by transparency, reflectivity, heat insulation, etc. Usually the film with high transparency will have low heat insulation; The more reflective the higher the heat insulation, but too high reflection will reduce the transparency and affect the line of sight. Therefore, only films with high light transmittance, low reflectivity and good heat insulation are considered good films.

Fifth, check whether there is a perfect certificate, test report and manufacturer-based warranty card, only the manufacturer-based warranty card is trustworthy, the manufacturer's warranty card usually contains the real and findable manufacturer name, telephone, address and website.

Features of staining membranes:

1) The dark film can isolate visible light and have privacy;

2) Cheap price;

3) It is basically not blocked to infrared rays, and the heat insulation effect is poor;

4) It is easy to blister, fade, etc. after use.