Types of car film

First, automobile film is a kind of coating and composite process film, whose main function is to block strong sunlight. This kind of automobile film was produced earlier and basically has no heat insulation function. In the early days, it was called drying paper, also called tea paper.

Second, the automobile film is a dyed film. Most of the dyed automobile films on the market are deep dyeing process, in which heat absorber is added to absorb the infrared rays in the sun to achieve the effect of heat insulation. Because it also absorbs visible light, the visible light transmittance is not enough, and the definition is poor due to the limitation of its own technology. Another weakness of this film is that its thermal insulation function decays quickly and it is easy to fade, so it is relatively cheap.

Thirdly, the automobile film is a vacuum thermal evaporation film, and the aluminum layer on the substrate is evaporated by vacuum thermal evaporation process to achieve heat insulation effect. This is the so-called metal film field, which has lasting heat insulation, but its weakness lies in its low definition, which affects the comfort of the field of vision, and another outstanding weakness is its high reflection.

Fourthly, the automobile film is a metal magnetron sputtering film. This is the highest technology of glass film up to 20 18. It was produced in the late 1990s and has undergone many technological innovations. Magnetron sputtering technology uses advanced aerospace alloy materials, such as nickel, silver, titanium and gold. Using the most advanced multi-cavity high-speed rotating equipment, using the principle of electric field and magnetic field, metal particles are uniformly sputtered on high-tension PET substrate at high speed and high strength. The products of magnetron sputtering process not only have good metal texture and stable heat insulation performance, but also have transparency, low reflectivity and lasting color that other processes can not achieve.

Extended data

Purchasing index

Transparency and clarity

This is the most important performance of automobile film related to driving safety. Users are advised not to choose films with too low transmittance as far as possible. It is more appropriate to choose films with transmittance above 35% for window films, especially for the first two windows. At this time, the side window film does not need to be dug, which does not affect the line of sight. When driving at night, it can also reduce the strong glare reflection of the oncoming car headlights on the rearview mirror, making the eyes very comfortable. In addition, good sight can be ensured when driving, reversing and turning around on rainy nights.

1. The substrate used for the thermal insulation film is clear enough. Even if it is a dark film, the scenery you see should be clear and not dim and deformed.

2, the durability of the color of the thermal insulation film, a good thermal insulation film can be maintained for more than 6 years without fading, still as new, and the color will fade after two years.

Thermal insulation rate

This is an important index reflecting the thermal insulation performance of window film. Considering the climatic factors of long summer, high temperature and strong sunshine in Guangdong, the thermal insulation performance of window film is higher. Good quality automobile explosion-proof membrane can reflect infrared rays, so the temperature inside the car is much lower, which in turn will reduce the air conditioning load and save fuel. If the car is the main judge, the method is simple, just block the sun with coated glass and feel its heat insulation effect with your face or hands.

Explosion proof performance

This is another important performance related to safety. High-quality explosion-proof film itself has strong toughness, and the glass can be stuck by the film after being broken, and it will not splash and hurt people, so it has strong impact resistance. Inferior explosion-proof membranes are soft to the touch, lack sufficient toughness, are not resistant to ultraviolet radiation, and are easy to age and become brittle.

Ultraviolet blocking rate

For high-quality membranes, this index is generally not less than 98%, and the high one can reach 100%. The ultraviolet blocking rate is high, which can effectively prevent people in the car from being burned by excessive ultraviolet radiation, and can also protect the car stereo from sunburn. Many inferior membranes do not have this index, or are far below the standard of 98%.

colour

Colors can be matched according to body colors and personal hobbies. Usually use light green, sky blue, gray, brown, natural color and other colors that are more comfortable for the eyes. However, for different films, the formation of color is different: the dyed film is formed by adding pigment to glue, the primary color film uses different primary color substrates, and the natural color of magnetron sputtering film is formed by depositing the color of metal or compound itself without adding any pigment. In this way, the stability time of different film colors is different. Generally, the dyed film will change greatly from half a year to 1 year, while the primary color film with better quality will ensure a certain color stability within 3-5 years, while the color stability of the natural color magnetron sputtering film can last for more than 10 years.

Baidu encyclopedia-car window film