Fluorine release film is formed by coating a fluoropolymer solution on a substrate such as PET, and then undergoing processes like drying and curing to create a release layer. Its principles and characteristics are as follows:

Principle

Fluoropolymers have extremely low surface energy, which enables them to form a uniform and compact molecular layer on the surface of the substrate. When pressure-sensitive adhesives and other viscous substances come into contact with fluorine release films, due to the low surface energy of the fluorine molecular layer, it is difficult for the viscous substances to form a strong chemical bond or physical adsorption with the surface of the release film, thus achieving the effect of easy peeling. Meanwhile, the molecular structure of fluorine release films is relatively stable and they are not prone to chemical reactions with other substances, thus maintaining excellent release performance.

Characteristics

Low surface energy: The surface energy is extremely low, generally below 20 dyn/cm, which makes the adhesion force of various viscous substances on its surface very small. The release force is uniform and stable, and release can be easily achieved. It can meet the release requirements of different viscous materials and still maintain stable release performance after multiple peels.

High chemical stability: Fluoropolymers have strong chemical stability and good resistance to acids, alkalis, organic solvents, etc. They are not easily eroded by chemical substances and can be used in harsh chemical environments while maintaining the stable performance of release films.

High-temperature resistance: It can withstand relatively high temperatures and is generally used for a long time in a high-temperature environment of 200℃ - 250℃. In the short term, it can even withstand higher temperatures. This makes it suitable for processes that require high-temperature processing. For instance, in the manufacturing of some electronic components, it can be used as a release material in high-temperature lamination, curing and other processes.

Excellent physical properties: It has high tensile strength, tear strength and wear resistance, is not easy to break, can remain intact in various processing procedures, provides reliable protection and support for viscous materials, and is also convenient for operation and transportation.

Excellent optical performance: In some applications, fluorine release films have good transparency and low haze. For products with high optical performance requirements, such as optical tapes and polarizing films, their optical performance will not be affected, ensuring the visual effect and quality of the products.

Environmental friendliness: During the production and use of fluorine release films, they comply with relevant environmental protection standards, are non-toxic and odorless, and pose no harm to human health or the environment. They can be widely applied in industries with high environmental protection requirements such as food and medicine.