Calendered copper foil Basic meaning: Foil means very thin. Copper foil is a very thin copper product. The thickness of copper, like paper, is expressed in millimeters. Generally, it is between 0.1-0.01. The thinner and wider it is, the worse it will be produced.

Calendering means compressing and extending copper foil. Separate these two words to understand. The copper block will extend forward and backward under the pressure of the calender. It is the same principle as rolling. compare Electrolytic copper foil The processing of calendered copper foil is more difficult.

Copper foil is made of copper plus a certain share of other metals. There are generally 90 and 88 types of copper foil, namely 90% and 88% copper content. The size of 16 * 16cm copper foil is the most widely used decoration material. For example: hotels, temples, Buddha statues, gold lettered signboards, tile mosaics, handicrafts, etc; Copper foil: a kind of negative electrolytic data. It is a thin, continuous metal foil deposited on the substrate of the circuit board, which serves as the conductor of PCB. It is simply bonded to the insulating layer, bears the printing protective layer, and forms the circuit pattern after corrosion. Copper test: a test of the corrosiveness of flux, which applies a vacuum deposited film on the glass plate.