Copper foil is a negative electrolytic material

Copper foil is a negative electrolytic material. It is a thin, continuous metal foil deposited on the bottom layer of the circuit board. It acts as the conductor of the PCB. It is easy to bond to the insulation layer, accept the printing protective layer, corrosion form circuit pattern.

Copper foil is made of copper plus a certain proportion of other metals, copper foil generally has 90 foil and 88 foil two kinds, that is, copper content of 90% and 88%, the size of 16*16cm copper foil, is the most widely used decorative materials. Such as: hotel hotel, Buddhist temple, gold signs, tile Mosaic, handicrafts and so on.

Copper foil has the characteristics of low surface oxygen, can be attached to a variety of different substrates, such as metal, insulation materials, has a wide range of temperature use. Mainly used in electromagnetic shielding and antistatic, the conductive copper foil is placed on the substrate surface, combined with the metal substrate, has excellent conductivity, and provide electromagnetic shielding effect. Can be divided into: self adhesive copper foil, double guide copper foil, single guide copper foil, etc. Electronic grade copper foil (purity above 99.7%, thickness of 5um-105um) is one of the basic materials of the electronic industry. The rapid development of the electronic information industry, the use of electronic grade copper foil is increasing, the products are widely used in industrial calculators, communication equipment, QA equipment, lithium ion batteries, Civilian TV, video recorder, CD player, photocopier, telephone, heating and cooling air conditioning, automobile electronic parts, game consoles, etc. The demand for electronic grade copper foil, especially high performance electronic grade copper foil is increasing. Relevant professional institutions forecast that by 2015, China's domestic demand for electronic grade copper foil will reach 300,000 tons, China will become the world's largest manufacturing base of printed circuit boards and copper foil, electronic grade copper foil especially high-performance foil market is optimistic.