How to better choose PE protective film
Dec 19, 2021
PE protective film is so widely used, so how to buy PE protective film has become the most important issue. Today I have compiled five tips for purchasing PE protective film and share with you! as follows:
1. Look at the degree of light transmission
This is difficult to recognize with the naked eye. It is best to use an optical instrument to measure. Another simpler method is to cut a small piece of PE protective film and place it in the middle of the computer desktop and paste it one by one, and then create a new one on the computer A blank WORD document, check the whiteness of the blank WORD document in the area with and without the film on the computer or the area of the different film (professional speaking, it is called brightness). By comparing separately, the brightest material can be selected and its permeability is the best protective film.
Second, look at the haze
In a slightly darkened room, turn on a fluorescent lamp, tear off the PE protective film from the top and bottom of the release film, hold it with your hand, and place it between the eyes and the light. Look carefully to see if there is a layer of mist that is even in the PE protective film. Distribution, that is the culprit that affects the haze. The more serious the haze, the greater the haze and the worse the material. Otherwise, the better; (note that the haze will affect the transmittance rate, but is Rate is two different concepts!)
Three, look at anti-scratch
1. Whether the PE protective film is scratch-resistant and scratch-resistant is the most concerned issue. At present, the scratch-resistant materials on the market are basically the same (2-3H), and the performance is also good. There are only scratch-resistant and non-scratch-resistant points. The test method is to use a pencil with a hardness of 3H and push it 10 times on the PE protective film 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.
2. Another simple method is to use a slightly harder metal device or a newly cut nail to scratch the PE protective film with the strength of a normal stylus. If it is very easy to scratch, it is deemed not scratch-resistant and no scratch It can be determined that it has a scratch-resistant function.
Four, anti-fingerprint
In recent years, the screen size of many products has become larger and larger, and more and more smart phones are equipped with capacitive screens (touch with fingers instead of old-fashioned resistive screens, which need to be drawn with a pen). PE protective film There is an increasing need for anti-fingerprint functions.
Five, look at static electricity
Since the LCD is a sensitive device that is 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 material or two-layer material) to be tested, and smoke a cigarette to light the ashes on the desktop , Or get some small paper scraps on the desktop, and then tear off the top layer of PE protective film (this step is for 3 layers), then tear off the protective film of the silicone layer, and tear off this layer of PE When the protective film is used, immediately put the used layer (silica gel surface) close to the 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.
