How to choose a PE protective film substrate? You must know these

23 Jul.,2022

How to choose a PE protective film substrate? You must know these-Weifang Vangel Protective film-The substrate is the carrier of the colloid. Because it is not sticky, it needs to be uniformly coated with a layer of excellent performance adhesive on the surface, and then cross-linked in the high-temperature oven to form a viscous polymer material.

 

blue protective film

pe protective film

The substrate is the carrier of the colloid. Because it is not sticky, it needs to be uniformly coated with a layer of excellent performance adhesive on the surface, and then cross-linked in the high-temperature oven to form a viscous polymer material. After secondary processing, the substrate film can be used as the main body to realize the protective effects of PE protective film against scratching, isolation, and anti-fouling-PE protective film substrate.

At present, PE protective film substrates are constantly expanding according to market demand. However, there are some unscrupulous PE protective film substrate manufacturers to make huge profits by mass production and supply of low-quality, low-imitation, counterfeit and cheap fake products. User rights No guarantee. Therefore, it is recommended that major coating plants purchase and master some purchasing skills to identify the material of the PE protective film substrate.

First: look at the transparency

This is difficult to identify with the naked eye. It is recommended to use an optical instrument to measure it. There is also a relatively simple method, which is to choose each type of PE protective film, cut a small piece 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 For blank documents, check the whiteness (or brightness) of the blank WORD file in the area with and without film on the computer, or the whiteness (or brightness) of the blank WORD file in different film areas. By comparing separately, the brightest material can be selected, which is the best permeability among the PE protective films selected for testing.

Second: look at the haze

1. After the various types of PE protective films are pasted in sequence, the more the background color of the screen, the smaller the haze. The smaller the haze, the better the material. If you use a black test board in this method, it is easier to see the difference. .

2. 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 between the eyes and the light, and check carefully whether there is a layer of mist in the protective film. Uniform distribution is the culprit that affects the haze. The more severe the haze, the greater the haze and the worse the material, and vice versa.

Third: look at static electricity

Since the liquid crystal display is a sensitive device that is afraid of static electricity, the smaller the static electricity when attaching the PE protective film, the better. The test method is to prepare the PE protective film (3 layer material or 2 layer material) to be tested, and light a cigarette to knock the soot in Desktop, or get some small paper scraps on the desktop, then tear off the top layer of PE protective film (for 3 layers of material), then tear off the PE protective film with silicone layer, tear off When removing this layer of PE protective film, immediately move the used layer (silica gel surface) close to soot or paper dust to see if the PE protective film will absorb these things on the silica gel layer of the PE protective film, and whether the degree of adsorption is strong. The stronger it is, the higher the static electricity generated by the PE protective film material, the worse the material, and vice versa.

Fourth: 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 on the PE protective film 10 times with a force of 500G at an angle of 45 degrees. If there is no scratch, it is considered that the hardness requirement of 3H can be reached.

2. There is also a simple method, which is to use a little hard metal device or newly cut nails to scratch the PE protective film with the strength of a normal stylus. The simple method is to use a little hard metal device or new cut The nails are scratched on the surface of the material with the strength of a normal stylus. If it is very easy to scratch, it is deemed not to be scratch-resistant, and if it is not scratched, it can be determined that it has a scratch-resistant function.