Yeslafilm is specialized in PE High-Density Film products. So we summarize the below five steps which help you buy the best PE protective film.
It is difficult to recognize the degree of light transmission with the naked eye. It is best to use an optical instrument to measure. There is also a simpler method, which is to choose a PE protective film to cut a small piece and place it in the middle of the computer desktop. Paste it, and then create a new blank WORD document on the computer to check the whiteness of the blank WORD document in the area with and without the film on the computer or in the area with different films (professional point of view is called brightness). By comparing separately, the brightest material can be selected and its permeability is the best protective film.
Look at the haze; how do you see the haze of the PE protective film? First, check the monitor while turning off the power to the monitor. The method is the same as the above. After pasting various protective films in sequence, the clearer the color of the computer display, the smaller the haze. The smaller the haze, the better the material. If you use a black test board, it is easier to see the difference.
Look at static electricity. Since liquid crystal displays are sensitive devices that are afraid of static electricity, the smaller the static electricity is, the better when attaching the protective film. The test method is to prepare the PE protective film (three-layer or two-layer) to be tested and smoke a cigarette Knock a little soot on the desktop, or get some small paper scraps on the desktop, then tear off the top layer of the PE protective film (this step is for the 3-layer material), and then tear off the protective film of the silicone layer. When tearing off this layer of PE protective film, immediately put the used layer (silica gel surface) close to soot or paper scraps to see if the protective film will adsorb these things on the silica gel layer of the protective film and whether the degree of adsorption is strong. The stronger it is, the higher the static electricity generated by this material, the worse the material, and vice versa.
To see whether the scratch-resistant PE protective film is scratch-resistant and scratch-resistant is the most concerning issue. At present, the scratch-resistant materials on the market are basically the same (2-3H), with good performance, only scratch-resistant and not scratch-resistant Of points. The test method is to use a pencil with a hardness of 3H to press and push the PE protective film 10 times with a force of 500G at a 45-degree angle. If there is no scratch, it is considered that the hardness requirement of 3H can be reached.
Anti-fingerprint In recent years, the screen size of many products has become larger and larger, and more and more smartphones are equipped with capacitive screens (touching with a finger is different from the old-fashioned resistive screen, which requires a pen to draw). Application, PE protective film needs more and more anti-fingerprint functions. More info click here: polyethylene film manufacturer