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What advantages does PET have over PVC protective film?

2025/6/13 11:24:06     13
PET protective film is a kind of packaging film with relatively comprehensive performance. It has good transparency and luster. It has good air tightness and aroma retention. It has moderate moisture resistance and its moisture permeability decreases at low temperatures. The mechanical properties of PET protective film are excellent. Its strength and toughness are the best among all thermoplastics, and its tensile strength and impact strength are much higher than those of ordinary films. It also has good stiffness, stable dimensions and is suitable for secondary processing such as printing and paper bag making. PET protective film also features excellent heat resistance, cold resistance, as well as good resistance to chemicals and oil.
PET protective film is currently the most common type of protective film on the market, and its chemical name is polyester film. The characteristics of PET protective film are that it is relatively hard in texture and quite scratch-resistant. Moreover, it will not turn yellow or become oily like PVC material even after long-term use. However, most PET protective films rely on electrostatic adsorption, which makes them prone to bubbling and peeling. But even if they peel off, they can be reused after being washed in clean water. The price of PET protective film is much higher than that of PVC. When many well-known foreign brand mobile phones leave the factory, they are randomly equipped with PET protective films. The protective films made of PET material have relatively exquisite workmanship and packaging. There are specially customized protective films for popular mobile phone models, which can be used directly without cutting. Some products of well-known brand mobile phone films on the market are also made of PET material.
PVC protective film is a plastic material with a relatively long development history. Although new entrants have continuously overshadowed the former luster of PVC, it still enjoys a good reputation. Coupled with the low cost of PVC, it still has a certain market influence in China. PET protective film is a highly specialized type of protective film. With the development of the information age, its role has gradually expanded, and its influence should not be underestimated.
Compared with PVC materials that are gradually fading from the stage, currently, PET accounts for one-third of the packaging film industry, forming a tripartite confrontation with PE protective films and OPP protective films.
The full name of PET protective film is high-temperature resistant polyester film. It features outstanding physical and chemical properties, dimensional stability, transparency and recyclability, and can be widely applied in magnetic recording, photosensitive materials, electronics, electrical insulation, industrial films, packaging decoration and other fields.