PET protective film is currently the most common type of protective film on the market PE T protective film characteristics are: a. Excellent transparency and brightness, showing very good results.

　　A, with excellent transparency and brightness , show the effect is very good .

　　Second, non-toxic, good hygiene.

　　PET sheet is considered to be an ideal packaging material to meet the requirements of environmental protection.

　　4、Excellent surface decoration performance, can be printed without surface treatment, easy to emboss patterns, easy metalization (vacuum plating metal layer).

　　Fifth, the use of polymer conductive polymer coating, low surface resistivity, stable performance, will not be affected by the ambient temperature and humidity.

　　Sixth, with good mechanical strength.

　　Seven, good chemical resistance, can withstand the erosion of a variety of chemical substances.

　　Good adaptability to environmental protection, can be economical and convenient recycling, incineration of its waste disposal, does not produce harmful substances that affect the environment.

　　Nine, the barrier performance of oxygen and water vapor good

　　Product features: high light transmission rate, weather resistance, low adhesion and easy to tear, no residual adhesive, high temperature resistance.

　　Applications and uses of different thicknesses of PET protective film

　　As we all know, the usage rate of PET protective film in the electronics industry is very high, and the thickness of the tape used varies from 30 μm to 150 μm in the market.

　　30 μm PE T protective film: Although thin, it has excellent shear force and excellent adhesive strength, aging resistance and UV resistance are very good, the probability of fogging is very low, generally used for LCD and fixed nameplates, etc.

　　50 μm-60 μm PE T protective film: It is a light and thin variety, but also maintains good adhesive effect, mainly used for nameplate, headphone microphone attachment, digital camera reflective film fixing, LCD reflector and backlight film group and cell phone center button frame fixing.

　　80 μm PE film: excellent adhesion ability at room temperature, suitable for polar surface smooth surface adhesion, fixing of LCD frame, fixing of digital camera button and hard material, fixing of LCD front case and panel.

　　100 μm PE film: excellent adhesive strength for smooth surface, mainly used for fixing between LCD backlight film set and bottom frame.

　　125 μm PE film: Excellent overall performance, excellent adhesion to most materials, excellent shear resistance, temperature resistance. It is mainly used for fixing windows and lenses, fixing LCD modules in digital cameras, and fixing LCD backlight film sets to the bottom frame.

　　150 μm PE T protective film: can maintain good adhesion at high and low temperatures, suitable for EPDM sealing strips, excellent resistance to Ca CO 3 (calcium carbonate) characteristics.

　　PET silicone protective film warping causes and control

　　1, the difference between the material itself: if the application layer and the bonding layer of the material is different, the warpage can not be controlled at this time, the large tension will not have much improvement, the general customer will not specify too high.

　　2, tension problem: applies to the control of the same material substrate, the thickness difference is not large, can be controlled according to the increase or decrease in tension. This is very simple, but remember that the tension of the drying box cannot be very small, otherwise it will cause the phenomenon of invalid correction or fitting bubbles.

　　3, the relative path of film penetration is different: it will change the size and even the direction of warpage. Here we are talking about the part before and after the left and right film enters the laminating wheel, according to change the wrap angle to change the warpage. This is also commonly used. However, due to some reasons of the machine itself, some coating lines do not have adjusting rollers and must be modified.

　　4. The substrate itself is tight and loose: the key influence is reflected in the laminating film. At this time, the warpage on the upper and lower sides of the finished product will be inconsistent and will exceed the standard if it is serious. This time only change the substrate, there is no other way.

　　5, the pressure roller up and down both sides of the pressure inconsistency: the main impact on both sides of the finished product warpage, by changing the standard air pressure of the cylinder can be a good solution.

　　Remember that the pressure of the film paste film pressure wheel should be small, and the pressure of thick film paste thick film must be large.