Aluminum foil double-sided copper plating is an electronic packaging technology that has excellent electrical characteristics and bonding strength

     Aluminum foil double-sided copper platingIt is an electronic packaging technology that has excellent electrical characteristics and bonding strength, and is widely used in the packaging of electronic components. The double-sided copper plating technology for aluminum foil mainly includes three steps: first, cover the aluminum foil on the surface of the electronic substrate, and then use hot pressing technology to tightly bond the aluminum foil and the substrate; Secondly, copper plating is applied to the substrate covered with aluminum foil to form a metal connection layer; Finally, cover the aluminum foil on both sides of the circuit board and use hot pressing technology to tightly bond the aluminum foil to the circuit board.

Aluminum foil, due to its excellent properties, is widely used in food, beverages, cigarettes, pharmaceuticals, photographic substrates, household goods, etc. However, when subdivided into various uses, it can be further divided into many types.

Aluminum foil refers to a thin strip of aluminum and aluminum alloy with a thickness of ≤ 0.2mm. Its hot stamping effect is similar to that of pure silver foil, so it is also known as fake silver foil. Due to the soft texture and good ductility of aluminum, it has a silver white luster. If the rolled thin sheet is mounted on adhesive paper with substances such as sodium silicate to make aluminum foil, it can also be printed. Aluminum foil is generally classified according to its thickness, condition, and purpose.

According to thickness: aluminum foil greater than 0.012mm is called single foil, and foil less than or equal to 0.012mm is called double foil; There are also single zero foils that have a thickness with a zero after the decimal point, and double foils that have two zeros after the decimal point.

According to the state, it can be divided into fully hard foil, soft foil, semi hard foil, 3/4 hard foil, and 1/4 hard foil. Full hard foil refers to the foil that has not been annealed after rolling (fully annealed coil and>75% cold rolling); Soft state foil refers to foil that has been completely annealed after cold rolling; Aluminum foil with tensile strength between fully hard foil and soft foil is called semi-rigid foil; 3/4 hard foil refers to any foil with a tensile strength between fully hard foil and semi hard foil; Aluminum foil with a tensile strength between soft state foil and semi-rigid foil is called 1/4 hard foil.

According to surface condition, it can be divided into single-sided foil and double-sided foil. Aluminum foil rolling is divided into single sheet rolling and double joint rolling. During single sheet rolling, both sides of the foil are in contact with the roller surface, and both sides have a bright metallic luster, which is called double-sided glossy foil. During double rolling, only one side of each foil is in contact with the rolling mill. The side in contact with the rolling mill is shiny, while the two sides in contact between the aluminum foils are dull. This type of foil is called single-sided glossy foil. The minimum thickness of double-sided aluminum foil mainly depends on the diameter of the work roll, usually not less than 0.01mm. The thickness of single-sided aluminum foil is usually not greater than 0.03mm, and the current minimum thickness can reach 0.004mm.

     Aluminum foil double-sided copper platingThe technology has excellent electrical characteristics and bonding strength, which can meet the electrical characteristics and bonding strength required for electronic component packaging; In addition, it also has the advantages of high temperature resistance, corrosion resistance, small size, and light weight, and is widely used in the packaging of consumer electronic products. The application range of double-sided copper plating technology for aluminum foil is very wide, which can be used for packaging circuit boards, automotive electronic components, consumer electronics, solar cell modules, and smartphones.

Its advantage lies in the significant improvement of the electrical characteristics and density of the circuit board, which can meet the high-precision packaging requirements of electronic products. In summary, the double-sided copper plating technology for aluminum foil has excellent electrical characteristics and bonding strength, as well as advantages such as high temperature resistance, corrosion resistance, small size, and light weight. Its application range is very wide, and it is widely used in the packaging of consumer electronic products.