What is the current situation of polyimide film industry in China's PCB factories?

PCB manufacturers, PCB designers and PCBA manufacturers explain to you the current situation of polyimide film industry in China's PCB factories?

Polyimide film of PCB factory refers to a kind of macromolecular polymer containing imide ring (- CO - NH - CO -) on the main chain prepared by a series of reactions of diamine and dianhydride, mainly including aliphatIC polyimide and aromatic polyimide.

Polyimide film has the highest UL-94 flame retardant grade, good electrical insulation, mechanical properties, chEMIcal stability, aging resistance, radiation resistance, low dielectric loss, and these properties will not change significantly in a wide temperature range (- 269-400 ℃). It has become one of the important application materials in electronic and motor fields.

Polyimide film is divided into electrical grade with insulation and heat resistance as the main performance index and electronic grade with high flexibility and low expansion coefficient according to its use. Among them, the main applications of electronic grade polyimide film include: flexible substrate and cover plate materials, COF flexible substrate, FPC substrate and cover layer materials, raw film materials of graphite radiator and MPI for 5G applications.

In recent years, the scale of LED, Automotive electronics, consumer electronics and other industries in China has been expanding, and the circuit board has been developing towards high efficiency and high integration. The demand for polyimide film products has been increasing.

According to the Research Report on MARKet Analysis and Development PrOSPect of Polyimide Film in China from 2020 to 2024 released by New Horizon Industry Research Center, the demand for polyimide film in China will reach 9000 tons in 2019.

At present, the competition in China's polyimide film industry is mainly divided into three levels. Enterprises in the high-end product field occupy a leading position by virtue of their technical advantages, and imported products occupy the main domestic market.

Secondly, Time New Materials, Danbang Technology and other domestic enterprises with relatively advanced technology actively participate in the market competition of electronic polyimide film by constantly increasing their product R&D and innovation advantages. However, due to the limitation of technical level, the production capacity of electronic polyimide film is SMAll and its market share is low.

Finally, most domestic enterprises with weak technical strength, mainly electrical grade polyimide film, are in the low-end product field due to weak R&D technology, low product quality and performance level. In general, there are many enterprises in the low-end polyimide film field, and the market competition is fierce. In the high-end polyimide film market, foreign leading enterprises occupy a leading position, and the competition is relatively mild. PCB manufacturers, PCB designers and PCBA manufacturers explain to you the current situation of polyimide film industry in China's PCB factories?