Car wrap refers to the wrap that is pasted on the surface of the car glass, commonly known as explosion-proof film. In addition to heat insulation and light insulation, it also has an explosion-proof function. Quality explosion-proof film is made of special polyester film as the base material, and the film itself has strong toughness. Together with special pressure-sensitive adhesive, when an accident occurs, the film sticks the shattered glass firmly and will not splash and harm people. Car explosion-proof film also has the function of one-way perspective and reducing glare. Since its debut, car wrap has gone through four stages: “dyed film”, “metal reflective film”, “heat-absorbing film” and “intelligent spectral selective film”.
Heat insulation principle of car wrap
Car wrap consists of visible light, infrared, and ultraviolet rays. The percentage of heat carried by each type of light accounts for 49%, 49%, and 2% of the total solar heat, respectively. Among them, only visible light can be seen by human eyes. Contrary to conventional wisdom, solar heat not only exists in infrared, but also in visible and ultraviolet light. High-quality car wrap should block as much heat as possible from the infrared and ultraviolet parts while allowing visible light to pass through. Especially for the front windshield film, more than 70% of visible light must pass through to ensure driving safety.
According to the principles of optics, the higher the light transmittance, the lower the heat insulation rate, and the higher the reflection rate, the higher the heat insulation rate. However, high reflectivity can bring great safety hazards to car driving. High-light transmission, high heat insulation, and low reflection are the correct choices.
Choosing the right car wrap
Choosing a suitable car wrap can not only effectively block heat and UV rays, but also ensure the privacy of the car interior and avoid external interference. Therefore, choosing a good film is very important. However, car wrap is a product with high scientific content. Moreover, there are many types of film on the market, such as dyed film, metal film, ceramic film, etc. Ordinary consumers find it difficult to gain a deep understanding of it, and therefore do not know how to distinguish its quality, and is easy to fall into the trap of choosing car wrap.
Look at the color
Poor-quality film is mainly colored by the dyeing process. Therefore, these pigments are adsorbed on the surface of the film, the color uniformity and stability are poor, the color difference is serious, and it is more prone to fading and becoming blurred. High-quality car wraps are made using a magnetron sputtering process, by adsorbing precious rare space metals such as gold, silver, nickel, and titanium with a strong magnetic field, which not only have uniform color, but also have natural metallic luster, high visual clarity, and excellent transparency, making it very suitable for car glass.
When choosing car wrap, it is best to tear off the protective paper of the installation glue and smell it up close. If there is no irritating smell or the smell is very slight, it proves that the film is at least of good quality. Of course, this does not mean that its performance is excellent. But if there is a strong smell after tearing it open, don’t consider this film.
Poor-quality film uses ordinary polyester film as the base material, which cannot meet the basic requirements of safety and explosion-proof for car wrap. High-quality car wrap uses optical-grade polyester film. This type of polyester film is not only more expensive, but also feels thick, smooth, compact in structure, high in strength, and therefore has high safety and excellent explosion-proof performance.
Check the technical parameters
Visible light transmittance, visible light reflectance, heat insulation rate, and UV blocking rate are commonly used performance indicators for car wrap. According to the principles of optics, the basic relationship between the first three is: the higher the light transmittance, the lower the heat insulation rate; the higher the reflection rate, the higher the heat insulation rate. However, high reflectivity can bring great hidden dangers to car driving. Therefore, high light transmission, high heat insulation, and low reflection are the three major requirements of today’s car wrap technology.
When choosing car wrap, car owners must balance compare, and ideally experience it themselves. This not only allows them to intuitively feel the light transmission and privacy but also experience the sitting feeling in the car under heat lamps.
Have original factory warranty
Warranty methods are also something some brands vaguely hide. Common warranty methods include a warranty from the construction store and a warranty from the brand official. Among these two methods, the official warranty is more reliable.
Original factory warranty is the legal right of every car owner. Only the warranty card provided by the manufacturer is proof of the original car wrap and the after-sales guarantee to ensure your peace of mind.