Ultra clear PET film: definition and characteristics
ultra clear PET film, as the name suggests, has the most extraordinary light transmittance. Generally speaking, ordinary PET film has good transparency and can meet most daily needs. However, ultra clear PET film goes a step further on this basis, and its light transmittance often exceeds 90%, and under certain conditions it can even reach more than 95%, which is almost close to the theoretical limit of transparent materials. This high light transmittance is due to advanced production technology and strict raw material control, which ensures that the content of impurities and additives inside the film is extremely low, thereby reducing the scattering and absorption of light during propagation, allowing light to penetrate the film almost unimpeded.
Extensive expansion of application fields
It is precisely because of its excellent light transmittance that ultra clear PET film has shown extraordinary application potential in many fields:
Electronic display protection: In electronic products such as smartphones, tablets, and TVs, ultra clear PET film is widely used as screen protector, which can not only effectively prevent scratches and impacts, but also ensure that users enjoy an extremely clear visual experience, both in terms of color reproduction and brightness performance, reaching an unprecedented level.
High-end packaging materials: In the field of luxury goods, cosmetics and food packaging, ultra clear PET film has become an ideal choice for displaying the true color and texture of products due to its high transparency and good barrier properties. It not only enhances the visual appeal of the product, but also effectively protects the contents from the external environment.
Optical components: In the fields of optical instruments, solar panels and LED lighting, ultra clear PET film is used as a key material for lenses, reflective films or light-transmitting panels. Its high light transmittance helps to improve optical efficiency and reduce energy loss. It is the key to achieving high-efficiency and low-energy products.
Architecture and decoration: As the concept of green building has become more popular, ultra clear PET film has also been used in building windows, partitions and interior decoration, which not only ensures good natural lighting in the room, but also plays a role in heat insulation and sound insulation, providing more possibilities for modern architectural design.
Comparison with traditional PET film
Compared with ultra clear PET film, although traditional PET film still performs well in transparency, its light transmittance is usually slightly inferior. This is mainly because traditional PET film may introduce more impurities or additives, such as plasticizers, stabilizers, etc., during the production process to improve processing performance or extend service life. Although these additives contribute to the overall performance of the film, they also sacrifice its light transmittance to a certain extent. In addition, differences in production processes can also lead to differences in the internal microstructure of the film, which in turn affects the light propagation path and causes a decrease in light transmittance.