Initially people foil car glass or construction glass to deal with the summer scorching sun, to absorb ultraviolet light and also to have explosion-proof function.With the popularity of digital products, the choice of the screen tends mini, high use degrees.screen made of glass or plastic is very susceptible to sharp objects such as keys, nails, metal substances bump and leave sizes of deep and shallow cut marks on the screen, therefore,we need the proper screen protector to protector your screen, and here after you know the process and principle of screen protector film, you surely can choose the right one.

The screen protection film is actually an optical matter, As a commodity, it involves two main performance: transparent and scratch resistance. transparent namely light loss, the maximum screen protector film transmittance can reach 90% -92% and the market advocacy to 99% is just a false propaganda. The scratch resistance namely the scratch degree, we often see the poor quality of the protective film will appear a certain point in the frequently used smudged injury pattern, that is, the scratch degree is very low, and the protective film is the highest hardness attainable 4H

No Matter what the film, which basically consists of a layer of almost pure colorless substrate (typically using a PET film) as the main portion. We all know that the only pure colorless means that all colors are completely penetrate the protective film into our line of sight, which color appears because only the color is not absorbed by the object before dialysis out reflects our eyes. However, due to the limitations of the materials science world, protective film substrate can not avoid precipitation of color, but very light, only a few thousand, tens of thousands of sheets stacked will see a faint hint of color,.the same iPhone4 screen also divided into the cool colors and warm colors, a faint blue or faint yellow. But only one can not be observed with the naked eye.

The layer substrate only play the role of translucent. Making the film to be posted on the screen, you have to add a layer of sticky substance at the bottom of the substrate. Generally poor quality manufacturers will smear glue directly on the substrate below even get away, but they will fall off when torn glues on the screen, but can not guarantee that the bubble exclusion. Informal vendors in the substrate below using high-temperature molecular layer add a layer of silicone, the silicone molecule has a high viscosity, can be repeatedly washed to use features, and will not leave any traces on the screen, so to ensure a fast and high adsorption protective film ability

Last is adding to the top of the substrate with the hardened coating layer. the hardened coating can play hard, hardened coating is the use of the hardening process, in high temperature and high pressure circumstances stearyl oil directly after vaporization uniform pressure on the substrate then condensed to form a hardened coating. The coating is added up with 4H hardness, but make protective film on the lights and turn off the screen as a thin layer of grease will produce a rainbow pattern phenomenon may have a touch of color phenomenon.

The above process and principle is the base of screen protector film technology, and can produce the common and popular clear screen protector, if need matte screen protector,mirror screen protector,diamond screen protector,privacy screen protector, then need more steps.