What is the plastic film in the windshield of the car?
The second generation of dyeing process known as heat absorbing film, this film was produced in 1960s, see currently on the market for deep dyeing process with deep dyeing technique with endothermic agent, absorb sunlight in the infrared to achieve the effect of heat insulation. Because it also absorbs visible light, resulting in visible light penetration is not enough, coupled with the dyeing process itself, the definition of poor. In addition to the difference in clarity, another major weakness of such membranes is thermal insulation, which decays rapidly and is prone to fading. After a period of time (perhaps half a year), the film faded, no longer insulation, and will blister, seriously affecting visual perception. This type of film is especially suited for instant insulation testing (4S stores often use this feature to fudge customers)The naked eye can see different colors, such as red, blue, green, yellow and so on. They and aluminum film are the largest market share. Market situation: brands include 3A, 3M, Ray-Ban, Johnson, U.MA membrane, etc.
The third generation vacuum thermal evaporation process was developed in the early 1990s. The vacuum thermal evaporation process is to evaporate the aluminum layer on the substrate to achieve heat insulation effect. This kind of film has entered the field of metal film that we usually call it. It has more durable heat insulation, but the weakness lies in the low clarity and the visual comfort, and its other prominent weakness is the higher reflection.This film has a very obvious reflective effect, aluminized film is a very obvious representative. They and dye film are the most important in the market. Market situation: brands include 3M, Ray-Ban, Johnson, U.MA and so on
Only some of the top film is the product of this process, there are single, 4, 5, 7, 11, etc., the more layers, the higher the price, the more stable performance, the better the effect, the longer the service life. Market conditions: brands include: Master Series, membrane, dragon membrane, top film, V-KOOL top film, quantum top film, etc.
The fourth generation vacuum magnetron sputtering, which was produced in the late 1990s, has undergone many technical innovations and is now perfect. Magnetron sputtering is nickel, titanium, gold, silver, ceramics and other senior aerospace alloys using the most advanced multi cavity high-speed rotating equipment, the use of electric and magnetic field principle of high speed and high power PET base metal particle sputtering in high tension on the uniform. In addition to having a good metallic texture and a stable thermal insulation performance, the magnetron sputtering process also has the sharpness and low reflectivity and lasting color that other processes can not achieve. Metal magnetron sputtering has the characteristics of high clarity, high thermal insulation, low reflectivity and no staining. It is the highest technology of glass film at present.
Should be PET substrate, the quality of different membrane substrate is certainly not the same. As for what the situation should be specific to see the film, there are three main automotive membrane technology, coating and composite technology, vacuum thermal evaporation process, vacuum magnetron sputtering process, the latter the most advanced technology.
