5 things to note when choosing car window film
The car window film market in Vietnam today is very diverse in types, designs and brands. So how can users distinguish and choose the most suitable window film for their car?
Firstlyand most importantly is the film's heat insulation ability, expressed through the total solar energy rejection index. In the solar heat emitted, the amount of heat from infrared rays accounts for more than half. Good heat insulation film needs this index of 45% or more.
Automotive window film is very diverse in types, designs and brands. Photo: TL |
Mondayis the ability to eliminate ultraviolet (UV) rays. Ultraviolet radiation is a component of sunlight that can cause skin burns, dryness, darkening, rapid aging, and can cause skin cancer. The sun emits 3 types of ultraviolet rays: UV-A (wavelength 300 - 380 nm), UV-B (wavelength 280 - 300 nm) and UV-C (wavelength 200 - 280 nm). After passing through the ozone layer, only UV-A and UV-B rays reach the earth and directly affect the skin. Most good car insulation films today will be able to eliminate up to 99.9% of ultraviolet rays.
Tuesdayis the ability to reduce glare. With cars that are not covered with heat-insulating film or with low-quality heat-insulating film, drivers are easily dazzled when driving in the sun, causing unsafety. On the contrary, good heat-insulating film with a glare reduction rate of 20% or higher will help limit this phenomenon, helping drivers drive more comfortably and safely.
You should choose the right heat-insulating film for your car. Photo: TL |
Wednesday,Heat-insulating film must ensure visibility and observation for the driver, especially at night. This factor is evaluated through the light transmission rate. Good heat-insulating film products need to classify the types of rays that need to be eliminated (UV, IR) and the rays that should be retained (light rays). For side and rear windows, the light transmission rate can be as low as 20% to enhance the heat insulation ability (removal of solar energy).
Thursdayis the production technology, this is also the deciding factor whether the heat-insulating film can simultaneously meet the above factors or not. Popular and used for a long time is metallized film. With this technology, the film surface is often dyed and coated with metal to enhance the ability to reflect light and absorb heat. Thanks to that, metallized film has the ability to insulate immediately.
Heat-insulating film is used by many people for cars to protect the interior and health. Photo: TL |
Furthermore, due to the use of metal, this technology of heat insulation film obstructs and interferes with electromagnetic waves, affecting the operation of magnetic card readers, devices using phone signals, wifi, GPS, etc. Metal-coated films also oxidize over time, leading to corrosion of the glass surface and reducing the aesthetics of the car. The way to recognize metal-coated films is simply the mirror effect under light.
