Basic characteristics of PET protective film
The basic characteristics of PET protective film, PET protective film series is made of PET as the carrier, single-sided acrylic glue series adhesive, the release substrate, the release substrate is PET release film; PET protective film characteristics: tear No residual glue after starting; excellent transparency; in the die cutting process, paper scraps are not easy to produce, and the cleanliness is high; without primer treatment, excellent adhesion can be achieved against the adhesive; PET protective film use: suitable for panels Protection, such as stainless steel, aluminum, nameplate, and notebook computer case and display, mobile phone screen protection, such as painted surface, film surface, plastic surface. Product color: white transparent, milk white, blue, black and so on.
Basic characteristics of PET protective film:
First, the exhaustibility: This point may be noticed by the consumer, is it is good to stick when the protective film is attached, whether it is fast and automatic adsorption. It should be noted that the silicone protective tape basically has an automatic exhaust function, that is to say, if you tear off the upper and lower release film and put it on a clean screen, it will be attached automatically, leaving no bubble. However, the speed of the automatic attachment is inversely proportional to the setting force of the silicone, that is, the smaller the adhesion, the faster the exhaust speed, the greater the adhesion, and the slower the exhaust speed.
Second, static electricity: Because the liquid crystal display is sensitive to static electricity, the static electricity is as small as possible when the protective film is attached. The test method is to prepare the protective film to be tested (3 layers or two layers of material), and smoke a cigarette. Soot on the table, or get some fine paper scraps on the table, then tear off the top protective film of the protective film (this step for the 3 layers), then tear off the protective film with silicone, tear off This layer of protective film will immediately use the layer (silicone surface) to close to the soot or paper dust, to see if the protective film will adsorb these things to the silicone layer of the protective film, and the degree of adsorption is strong.
Third, the degree of transparency: this point is more difficult to identify with the naked eye, it is best to use optical instruments to measure; there is also a stupid way to select a variety of protective film, respectively, cut a small piece in the middle of the computer desktop, then open, and then open A blank WORD file, check the extent of the WORD file with the film and the unfilmed area or the different film area (professional point is called brightness). The contrast is the best choice for the brightest material. The transparency is the best protective film.
4. Haze: The haze is mainly to be seen when the display is turned off. After the protective film to be selected is sequentially pasted, the haze of the bottom color of the screen is smaller, of course, the better the material is. This method makes it easier to see the difference if a black test board is used. Another method is to open a fluorescent lamp in a slightly dark room, remove the protective film from the upper and lower film, and hold it between the eyes and the light. Look carefully to see if there is a layer of fog in the protection. Evenly distributed in the film, that is the culprit affecting the haze, the more serious the fog-like thing, the greater the haze, the worse the material, the better the explanation; the fog will affect the penetration rate, but with Transmittance is two different concepts!
Five, anti-scratch: This point is the most concerned about everyone, but also the problems that have been basically solved by various manufacturers. At present, the scratch-resistant materials in the industry are basically the same (2-3H), and the characteristics are good. Only the scratch-proof and non-scratch-proof points, the standard method is to use the Japanese Sanling brand hardness of 3H pencil (sold by the stationery store) to push down 10 times at a 45-degree angle with a force of 500G, and it is considered to be up to 3H without scratching. Hardness requirements. The simple method is to use a slightly hard metal device or a newly cut nail to scratch the strength of the stylus at the use surface of the material. If it is very easy to scratch, it is determined that it is not scratch-resistant. If it is not scratched, it can be confirmed to have scratch resistance. . The cutting and processing manufacturers should pay more attention to the uniformity of the scratch resistance of the whole or the whole batch of materials, because some material manufacturers have not achieved the uniformity in coating uniformity.
The protective film is coated with polymer conductive polymer, has low surface resistivity, stable performance, good chemical resistance, can withstand chemical attack, and is not affected by air and other environments. The PET film has excellent transparency and smoothness, and has excellent surface decoration properties. It can be printed without surface treatment and can be easily pressed into a pattern.
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