Negative electrolytic material with PI bonded copper foil and PET bonded copper foil styles

Analysis of PI bonded copper foil and PET bonded copper foil styles:

     PI bonded copper foilCopper foil bonded with PET is a negative electrolytic material, similar to tin foil in that it is a very thin copper sheet. Copper foil is made by adding a certain proportion of other metals to copper, and there are generally two types of copper foil: 90 foil and 88 foil. It is the most widely used decorative material. Electrolytic copper foil is an important material for the manufacturing of copper-clad laminates (CCL), printed circuit boards (PCB), and lithium-ion batteries.
In today's rapidly developing electronic information industry, electrolytic copper foil is known as the "neural network" for electronic product signal and power transmission and communication. Since 2002, the production value of printed circuit boards in China has become the third largest in the world. As a substrate material for PCBs—— copper clad laminateIt has also become the third largest producer in the world. This has also led to the rapid development of China's electrolytic copper foil industry in recent years. The analysis report shows that driven by "new infrastructure", downstream application fields such as 5G base stations and new energy vehicles are expected to experience rapid development, which will drive the demand scale of electrolytic copper foil market to nearly 100 billion yuan. Vigorously developing the import substitution of high-end electrolytic copper foil has entered a rare strategic opportunity period.
PI bonding copper foil and PET bonded copper foilIt is a thin, continuous metal foil deposited on the substrate layer of the circuit board. Copper foil, as a conductor of PCB, is easy to adhere to the insulation layer, receive printing protection layer, and form circuit patterns after corrosion. Copper foil has low surface oxygen properties and can adhere to various substrates such as metals, insulation materials, etc., with a wide temperature range of use. Mainly used for electromagnetic shielding and anti-static, placing conductive copper foil on the substrate surface and combining it with metal substrate, it has excellent conductivity and provides electromagnetic shielding effect.

Copper foil is classified in different ways as follows:

According to thickness, it can be divided into thick copper foil (greater than 70 μ m), conventional thickness copper foil (greater than 18 μ m but less than 70 μ m), thin copper foil (greater than 12 μ m but less than 18 μ m), and ultra-thin copper foil (less than 12 μ m);

According to the surface condition, it can be divided intoSingle sided processed copper foil(Single sided hairy), double-sided treated copper foil (double-sided thick), smooth treated copper foil (double-sided hairy), double-sided glossy copper foil (double-sided glossy), and very low profile copper foil (VLP copper foil) copper foil, etc;

According to the production method, it can be divided into electrolytic copper foilRolled Copper FoilAnd leather copper.

According to the scope of application, it can be divided into:

Copper foil laminates (CCL) and copper foil for printed circuit boards (PCB): CCL and PCB are the most widely used fields for copper foil applications. PCB has become an essential component for the majority of electronic products to achieve circuit interconnection. Copper foil has become a key material for PCBs that support and interconnect electronic components in electronic products. At present, the vast majority of applications in the CCL and PCB industries are electrolytic copper foils;

Copper foil for lithium-ion secondary batteries: According to the working principle and structural design of lithium-ion batteries, negative electrode materials such as graphite and petroleum coke need to be coated on the conductive current collector. Copper foil has become the preferred negative electrode current collector for lithium-ion batteries due to its good conductivity, soft texture, mature manufacturing technology, and relatively low price;

Copper foil for electromagnetic shielding: mainly used in some fields that require electromagnetic shielding, such as hospitals, communications, and military. Due to the width limitation of rolled copper foil, electromagnetic shielding copper foil is mostly electrolytic copper foil.