Lithium-ion batteries come in three forms: square, cylindrical, and soft pack. Lithium-ion batteries have many advantages such as small size, light weight, high specific energy, high safety, and flexible design. Lithium-ion batteries are mainly used in computers, mobile phones, electric vehicles, cameras, satellites, etc. Lithium batteries that can be made ultra-thin, lightweight, and miniaturized have been widely developed.
Lithium batteries are packaged in aluminum-plastic film, which is a technically difficult part of soft-pack batteries. Aluminum plastic film is mainly composed of nylon layer, aluminum foil layer (produced by MC Aluminum), heat sealing layer and adhesive for bonding. There is aluminum foil in the middle. 8021 aluminum foil, 8079 aluminum foil, etc. are commonly used. It mainly prevents the penetration of water vapor outside the battery and prevents the leakage of internal electrolyte. In the case of safety hazards, the soft-pack battery will only inflate at most. It does not explode like steel-shelled aluminum-shelled batteries, so the safety is improved.
8021 aluminum foil used for aluminum-plastic films has strong barrier properties, good extensibility, good electrolyte corrosion resistance, high heat sealing strength and good stability. It is commonly used in deep-drawing packaging materials, such as soft-pack lithium batteries, polymer lithium batteries, etc.
Specifications of 8021 aluminum foil for aluminum plastic film:
Temper: O, H14, H16, H18, H19, H22, H24
Thickness (mm): 0.035-0.055
Width (mm): 100-1600
Length (mm): C
MC Aluminum is a professional aluminum foil manufacturer with rich production experience, advanced technology and equipment, and high product quality. The surface of the produced 8021 aluminum foil is clean, degreased, smooth, without black threads, burrs, etc. It has good bonding and compounding properties during the aluminum-plastic film lamination process and is not easy to fall off and delaminate. At the same time, this product has good stamping properties, puncture resistance, and high elongation, and is deeply loved by foreign lithium battery aluminum plastic film processing manufacturers.