PET protective film material is transparent colorless, the surface after hardening treatment, the general PET protective film material according to the origin of different, the surface hardening value between 3H-4H, the better the surface hardening, the stronger the wear resistance.

Light transmittance is also the main property of PET protective film materials, the general light transmittance is more than 90%, the higher light transmittance not only makes us have a good visual effect when using related instruments, but also has a good protective effect on the eyes.

We all know that the use rate of PET protective film in the electronics industry is very high, and the thickness of the tape used in different ranges is also different, and the thickness of PET protective film on the market now ranges from 30μm to 245μm.

Now analyze for you, what kind of performance of different thickness PET protective films, and what fields are they mainly used in?

1, 30μm PET protective film

Although thin, it has good shear resistance and excellent bonding strength, anti-aging performance and UV resistance are very good, the probability of fog is very low, and it is generally used for LCD and fixed nameplates.

2, 50μm-60μm PET protective film

It is a thin and light variety, but it also maintains a good bonding effect, mainly used for the sticker of the nameplate, the attachment of the headset microphone, the fixing of the digital camera reflective film, the fixing between the LCD reflective film and the backlight film group and the mobile phone center button outer frame.

3, 80μm PET protective film

Good bonding ability at room temperature, suitable for polar surface smooth surface paste, LCD frame fixing, digital camera buttons and hard materials, LCD front shell and panel fixing

4, 100μm PET protective film

It has good adhesion strength for smooth surface, mainly used for fixing between LCD backlight film group and bottom frame.

5, 125μm PET protective film

The comprehensive performance is good, has good adhesion performance for most materials, and has excellent shear resistance and temperature resistance. It is mainly used for the fixing of Windows and lenses, the fixing of LCD module in digital camera, and the fixing between LCD backlight film group and bottom frame.

6, 150μm PET protective film

Can maintain good adhesion at high and low temperatures, suitable for EPDM sealing strip, good CaCO3(calcium carbonate) resistance.

7.160μm PET protective film

Not only has excellent shear strength, temperature resistance and paste ability, but also can ensure reliable paste effect in harsh external environment. Mainly used for mobile phone window, lens, battery fixing, digital camera rubber card, panel fixing.

8, 200μm PET protective film

Strong temperature resistance, mainly used for Windows, lenses, battery fixing, digital camera rubber sheet, memory card, panel fixing.

9, 240μm PET protective film

Thicker material, high hardness, generally used in large industrial production, suitable for furniture mold and decorative parts fixed and electronic load parts fixed, as well as bonded cards, generally the thicker the lower the cost.

With the rapid development of the e-commerce industry, the demand for product packaging is also increasing, so the use of PET protective film is more and more, and the quality of PET protective film on the market is different. So what are the causes of glue transfer in PET protective film?

The specific reasons are as follows:

1.the damage of the adhesive base: the surface of the profile glue paste residual more, PET protective film glue paste surface visible substrate;

2.Transmission residue: a small amount of adhesive remains on the surface of the profile, and the PET protective film adhesive maintains a good luster;

3.Cohesion damage: profile surface and substrate surface adhesion, PET protective film coating surface luster loss;

To deal with the problem of PET protective film glue transfer, the specific methods are as follows:

1, improve the quality of PET protective film adhesive. For example, the use of adhesives with high gel fraction, the use of copolymerization or bonding techniques of acrylic monomers with long carbon chains that improve the degree of cross-linking with the product; Add specific ultraviolet absorbers, optimize the prescription to reduce ultraviolet aging and the adhesive production process, improve the heat resistance and low temperature resistance of the adhesive.

2, improve the crosslinking degree of PET protective film adhesive. By improving the prescription of adhesives, increasing the proportion of crosslinkers, etc., cohesion can be improved.

3, improve PET protective film production technology, improve science and technology is quality assurance. The process requirements for coating production include binder ratio, binder dose, binder uniformity, curing agent ratio, curing agent dispersion uniformity in the adhesive, mechanical speed, temperature setting, drying effect, etc

4, improve the surface tension of aluminized PET protective film. PET itself is a polar material, there is a certain tension on both sides, and the tension value gradually decays over time, and the corona processor performs electrical activation processing online to improve the bonding force of the PET substrate and adhesive.