Polyester film (PET) is a film material made of polyethylene terephthalate as a raw material, made into thick sheets by extrusion, and then biaxially stretched. With excellent comprehensive performance, it is more and more favored by consumers. Features: usually colorless, transparent, glossy film (additive particles can now be added to make it have color), excellent mechanical properties, high rigidity, hardness and toughness, puncture resistance, friction resistance, high and low temperature resistance, chemical resistance Good resistance, oil resistance, air tightness and fragrance retention. It is one of the commonly used barrier composite film substrates, but the corona resistance is not good. Uses: The price of polyester film is relatively high, and the thickness is generally 0.012mm. It is commonly used as the outer layer of retort packaging, and has good printability. Moreover, due to the complexity and difficulty of polyester film, it brings a lot of difficulties to customs supervision.

The main points of PET protective film are:

1. It has excellent transparency and smoothness and good display effect.

2. No DU, sanitary.

Third, the thermoforming performance is good, comparable to ordinary PVC sheets, and can be vacuum formed into PET thermoformed products with excellent performance. PET sheet is considered to be an ideal packaging material that meets the requirements of environmental protection.

Fourth, the surface decoration performance is excellent, it can be printed without surface treatment, easy to suppress patterns, and easy to metalize.

5. It is coated with high-molecular conductive polymer, with low surface resistivity, stable performance, and is not affected by environmental temperature and humidity.

6. It has good mechanical strength.

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

8. It has good adaptability to environmental protection and can be recycled economically and conveniently. When its waste is incinerated, it does not produce harmful substances that harm the environment.

9. Good barrier performance to oxygen and water vapor.

The use of PET protective film:

1. The surface hardening treatment reaches 3.5-4H, which is scratch-resistant and wear-resistant.

2. The silicone composite layer is an adhesive, which can prevent the formation of air bubbles.

3. The characteristic of silica gel is that it can be pasted repeatedly without leaving any traces or corroding the surface.

4. It is used to protect LCD, touch screen, mobile phone, digital camera and PDA screen, avoid scratches during use, and achieve the screen protection effect.

5. It is composed of optical grade transparent polyester film (PET) coated with silica gel, and then laminated with transparent polyester (PET) release film.

6. The composite silica gel layer can effectively absorb part of the direct impact and protect the display from damage to the ring.

7. The optical effect of ultra-high light transmittance, and there is no residual glue after removal.

8. No reflection to increase the color of the display.

9. Silica gel will not deteriorate due to a long time and will not leave corrosive glue on the surface of the screen like other pastes. It is safe and reliable.