What is Calendered Copper Foil?

Calendered copper foil (Rolled copper foil) Basic meaning: Foil means very thin and very thin. Copper foil is a very thin copper product. The thickness of copper is expressed in millimeters, like paper. Generally, between 0.1-0.01, the thinner and wider it is, the worse it is to produce it. Calendering means compressed and extended copper foil.

• Name: Calendered copper foil
• Thickness: between 4 and 100 microns
• Property: Very thin copper foil with good flexural properties
• Alias: RA copper foil
• Applications: flexible circuit boards, 5G/6G communication, electromagnetic shielding, heat dissipation, graphene film preparation, batteries, LEDs, automobiles, etc.
• Calendered copper foil is made by repeated rolling and annealing of the high-precision copper strip using the principle of plastic processing.
• Widely used: Electronics industry

Calendered copper foil is made by repeated rolling and annealing of the high-precision copper strip using the principles of plastic processing. Foil means very thin and thin. Copper foil is a very thin copper product. Like paper and copper, its thickness is expressed in millimeters. Generally, between 0.1-0.01, the thinner and wider it is, the worse it is to produce it. Calendering means compressing and extending the copper foil. Separate these two words to understand. The copper block will be extended by the pressure of the calendar in the forward and backward directions. It is the same principle as rolling. Compared to electrolytic copper foil, calendered copper foil is more difficult to process. Copper foil is made of copper plus a certain proportion of other metals, and is generally available in 90 and 88 foils, i.e., 90% and 88% copper content, with a size of 16*16cm. Such as hotels, monasteries, Buddhist statues, gold signs, tile mosaics, handicrafts, etc.; Copper foil (copper foil): an anionic electrolytic material, precipitated on the circuit board substrate layer of a thin, continuous metal foil, which serves as the PCB conductor. It is easy to bond to the insulation layer, accept the printing of the protective layer, and corrosion to form the circuit pattern. copper mirror test (copper mirror test): a flux corrosion test, the use of a vacuum precipitation film on a glass board.

Calendered copper foil has low surface oxygen characteristics and can be attached to a variety of different substrates such as metals, insulating materials, etc. It has a wide temperature range. Mainly used in electromagnetic shielding and antistatic, the conductive copper foil is placed on the substrate surface and combined with metal substrates to have excellent conductivity and provide an electromagnetic shielding effect. It can be divided into self-adhesive copper foil, double-conducting copper foil, single-conducting copper foil, etc. . Electronic grade copper foil (purity 99.7% or more, thickness 5um-105um) is one of the basic materials for the electronics industry The rapid development of the electronic information industry has led to the increasing use of electronic grade copper foil, which is widely used in industrial calculators, communication equipment, QA equipment, lithium-ion batteries, civilian TV sets, VCRs, CD players, copiers, telephones, heating and cooling air conditioners, electronic parts for automobiles, game consoles, etc. parts, game consoles, etc. The demand for electronic-grade copper foil, especially high-performance electronic-grade copper foil, is increasing in domestic and international markets.