What is PET film?

What is insulation material PET film?

PET film, called Polyethylene Terephthalate Film, is a kind of high-performance plastic film. It is derived from the fine processing of polyethylene terephthalate (PET), a high-performance polymer. It is made ‌by advanced extrusion technology and bidirectional drawing process.

Characteristics of insulation material PET film

Excellent insulation properties: PET film has low dielectric constant and dielectric loss. It can effectively isolate electronic components, protect the circuit from external interference and ensure the safe and reliable operation of electrical equipment‌.

Good mechanical properties: PET film has high tensile strength and modulus. And it can withstand a certain mechanical stress and is not easy to deformation and rupture. It is suitable for the support, fixing and protection of electronic and electrical equipment‌.

High temperature resistance: PET film can work statically at a high temperature for a long time. It is not easy to be eroded by chemicals and has a long service life‌.

‌Corrosion resistance and anti-aging: PET film has good corrosion resistance and anti-aging characteristics. It can perform well in complex working environments‌.

Transparency and gloss: PET film has excellent transparency and gloss. So it can provide good visual effects‌.

Dimensional stability: Dimensional stability of PET film is good. It is suitable for printing and paper secondary processing of bags‌.

Application of insulation material PET film

Capacitor insulation: PET film is often used as an insulating medium for capacitors because of its excellent insulation properties and stability. In capacitors, PET films can effectively isolate positive and negative electrodes, preventing current from passing directly through, while maintaining the normal function of the capacitor.

Cable insulation: In wire and cable manufacturing, PET film can be wrapped around the conductor as an insulating layer to prevent current leakage and ensure the safe use of the cable. In addition, PET film also has a certain flame retardant performance, which can reduce the risk of fire to a certain extent.

Printed circuit wiring substrate: PET film has a flat surface and good dimensional stability. It is suitable as a printed circuit wiring substrate. In the manufacturing process of printed circuit boards, PET films can carry circuit patterns and form conductive lines through processes such as etching to achieve circuit interconnection.

Motor slot insulation: In motor manufacturing, PET film is often used as slot insulation material. It can effectively isolate the various parts of the motor, prevent the occurrence of current short circuit and leakage phenomenon. At the same time, it can ensure the normal operation and safety of the motor.

Packaging of electronic components: PET film can also be used for packaging and fixing of electronic components. During the packaging process, PET film can provide certain protection and support to prevent electronic components from being interfered with and damaged by the external environment.

Other electronic applications: The application of PET film in the field of electronics is not limited to the above aspects. For example, it can also be used for the base material of the touch screen, the protective film of the liquid crystal display screen, etc., It provides more choices and possibilities for the manufacturing of electronic products.

With the development of special functional films, the use of PET films is also expanding. In recent years, the production scale of polyester film industry has continued to expand. At the same time, the classification of polyester film is becoming more and more refined, for example, polyester film can be divided into thin film, medium film, thick film and ultra-thin film according to the thickness. According to the drawing process, polyester film can be divided into unidirectional tensile polyester film (CPET film) and bidirectional tensile polyester film (BOPET film) and so on. With the continuous progress of technology and the increasing market demand, the market prospect of PET film will be broader.