PE, whose full name is Polyethylene, is the simplest polymer organic compound with the most widely used polymer materials in the world today. The PE protective film is made of a special polyethylene (PE) plastic film and classified into high-density polyethylene protective film, medium-density polyethylene, and low-density polyethylene according to the density.
White Protective PE Film
The biggest advantage of PE protective film is that the protected product will not be contaminated during production, processing, transportation, storage and use, and it will be corroded and scratched to protect the original bright and glossy surface, thus improving product quality and market competitiveness. The current PE protective film is mainly used in the following industries:
1. hardware industry: computer chassis, galvanized sheet stamping, aluminum, stainless steel, titanium plate, plastic plate, glass, solar panels and so on.
2. Optoelectronic industry: LCD liquid crystal display, backlight board, cold light film, membrane switch, mobile phone screen and so on.
3. the plastics industry: ABS, PP injection molding products, PVC sheet, acrylic board, instrumentation, plastic lenses, paint parts surface protection and so on.
4. the printing industry: PVC, PC board, aluminum, film printing nameplate surface protection and so on.
5. Wire and cable industry: The protection of axle-mounted copper wire, semi-finished products, finished products and rolled products can effectively prevent dust pollution, prevent oxidation and prevent dirt.
6. the electronics industry: In the production, the general use of PE protective film is used to protect the finished product and semi-finished products, the line is not prone to scratches and bumps.
7. mobile phone digital industry: mobile phone film, also known as mobile phone beauty film, mobile phone protective film, can be used to frame mobile phone body, the screen of a cold film.
This is difficult to identify with the naked eye, it is best to use optical instruments to determine, there is a relatively simple way, is to select PE protective film were cut a small piece of computer desktop in the middle one by one paste, and then build on the computer A blank WORD document to check the extent of the whitish WORD document blank on the area where the computer has a film and no film or a different film area (professional point is called brightness). By contrast, the brightest material can be selected and its transparency is the best protective film.
Self-adhesive Protective Film
1. PE protective film haze how to see it? The first thing to do is to turn off the monitor. The method is the same as above. After the protective film is pasted in order, the clearer the color of the computer screen is, the smaller the haze is. The smaller the haze is, the better the material is. This method It’s easier to see the difference if you use a black test board.
2. in a slightly dark room, open a fluorescent lamp, remove the PE protective film up and down from the film and hold it between the eyes and the light by hand, you look carefully to see if there is a layer of mist in the PE protective film Evenly distributed, it is the culprit that affects haze. The more serious the haze is, the more haze the material is, the worse the material is. On the contrary, it means the better; (note that haze will affect the penetration rate, but Transmittance is two different concepts!)
Since the LCD device is sensitive to static electricity, the static electricity should be as small as possible when the protective film is attached. The test method is to prepare the PE protective film to be tested (3 layers or 2 layers), and smoke a cigarette to hit the ash on the desktop. , Or make a little confetti on the desktop, and then peel off the top protective film of the PE protective film (for the three layers of material with this step), then tear off the protective layer of the silicone layer, tear off the layer of PE Immediately when the protective film is used, the layer (silica gel surface) is used to get close to the soot or paper dust, and it is observed whether the protective film will adsorb these substances onto the silicone layer of the protective film and whether the degree of adsorption is strong. The more intense it is, the higher the static electricity generated by this material is, the worse the material is, and vice versa.
1. PE protective film is scratch-resistant, scratch-proof is everyone’s current concern, the current scratch-resistant material on the market is basically similar (2-3H), performance is also good, only scratch-resistant and not scratch-resistant. The test method is to use a pencil with a hardness of 3H to push the PE protective film 10 times at a force of 500 degrees at a 45 degree angle. The scratch-free condition is considered to be as high as 3H.
2. there is a simple way is to use slightly harder metal devices or new cut nails on the PE protective film with the power of the usual stylus to scratch, if it is very easy to scratch it is not scratch-resistant, no scratch It can be determined that it has a scratch-resistant function.
In recent years, many product screens have become larger and larger, and more and more smart phones use capacitive touch screens (touching with fingers rather than the old resistive screens). PE protective film more and more need to have anti-fingerprint features.
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