As the "invisible material" of modern industry, industrial aluminium foil has become the core material in the fields of packaging, electronics, new energy, construction, etc., due to its light weight, corrosion resistance, high thermal conductivity and recyclability.
The penetration rate of aluminum foil in the packaging field exceeds 48%, which is the main application scenario. Its ultra-thin specifications of 0.006-0.02mm, combined with alloys such as 8011 and 8021, can achieve 100% light shielding and moisture resistance, and are widely used in chocolate, coffee, and drug blister packaging. For example, after composite printing, 8021 aluminum foil can withstand high-temperature cooking at 121°C, making it the first choice for ready-to-eat food packaging.
With the explosion of new energy vehicles and energy storage industries, the demand for battery aluminum foil has increased by an average of 15% per year. As the positive electrode current collector of lithium batteries, 0.01-0.02mm 1060 and 3003 aluminum foils must meet the surface accuracy requirements of roughness ≤ 0.3μm to ensure close bonding with the electrode material. Composite aluminum foil (such as the "6μm PET+2μm aluminum layer" structure) reduces weight by 64% and increases battery energy density by 4.2%, becoming the mainstream direction of the next generation of batteries.
In the electronics field, aluminum foil is mainly used for aluminum electrolytic capacitors and radiators. After corrosion and chemical processing, 3003 and 1100 aluminum foils can be made into high-voltage anode foils with a thickness of 0.02-0.055mm and a withstand voltage of more than 450V. They are widely used in inverters and new energy vehicle electronic control systems.
Air conditioning foil (8011, 3003 alloys, thickness 0.07-0.15mm) can improve heat exchange efficiency by 15% through hydrophilic coating treatment, becoming the standard material for air conditioning heat exchangers.
In the construction field, 0.05-0.2mm 1060 aluminum foil and glass fiber are composited to make thermal insulation rolls with a reflectivity of 95%, which can reduce building energy consumption by 30%.
Honeycomb aluminum foil (thickness 0.08-0.2mm) is used as the core material of curtain walls, which has both sound insulation and fire resistance and has been used in super high-rise buildings such as the Shanghai Tower. In the automotive field, brazing aluminum foil (3003/4343 composite alloy) is used in radiator manufacturing, which increases heat exchange efficiency by 20% and reduces weight by 40%.
In the aerospace field, 0.03-0.1mm 5052 aluminum foil is used for aircraft skins and can withstand temperature differences of -60℃ to 120℃; in the military field, aluminum foil composite materials are used for electromagnetic shielding with an attenuation rate of more than 90dB. In addition, cable foil (1235 alloy, thickness 0.12-0.2mm) can resist salt spray corrosion and ensure the life of submarine cables through plastic coating.
The length of industrial aluminum foil rolls varies significantly due to application scenarios, thickness and production processes, and is usually between 500 feet and 10,000 feet. 1000 ft aluminum foil is a common length. Welcome to inquire what you need from us.