Thickness Difference Of Aluminum Foil

Common thickness range
The thickness of aluminum foil is usually between 0.006mm and 0.2mm. However, the thickness may vary depending on different application areas and requirements. For example, the thickness of aluminum foil used for food packaging is generally between 0.012mm and 0.02mm; Aluminum foil used in the electronics industry may have a thickness between 0.05mm and 0.2mm.
Thickness differences in different application scenarios
Food packaging: mainly considering barrier properties, flexibility, and cost. Thinner aluminum foil (such as 0.012mm) can effectively block light, oxygen, and moisture, protecting food from external factors. At the same time, it has a lower cost and can meet the needs of large-scale packaging. For some foods that require higher barrier properties, such as milk powder, coffee, etc., slightly thicker aluminum foil, such as 0.015mm -0.02mm, may be used to provide better protection.
Medical packaging: The quality and performance requirements for aluminum foil are high. In addition to barrier properties, safety and stability also need to be considered. Aluminum foil with a thickness of 0.02mm-0.03mm is generally used to ensure that the quality of the drug is not affected during its shelf life. For example, aluminum foil for bubble wrap packaging needs to have a certain thickness to ensure that it does not break during packaging and transportation, while also being able to seal well with plastic sheets.
Electronics industry: Aluminum foil used for electronic components such as capacitors and lithium batteries, with significant thickness differences. For example, the thickness of aluminum foil used for electrolytic capacitors is generally between 0.05mm-0.1mm, and a certain thickness is required to ensure its electrical performance and mechanical strength. And lithium batteries use aluminum foil as the current collector, with a thickness usually around 0.01mm-0.02mm, which not only meets the conductivity requirements but also reduces weight as much as possible to improve the energy density of the battery.
Construction industry: Aluminum foil is often used as a moisture-proof and heat reflecting material in building insulation and thermal insulation materials. Generally, aluminum foil with a thickness of 0.05mm-0.2mm is used. Thicker aluminum foil can provide better strength and durability, and is less likely to be damaged during construction and use. For example, in some roof insulation materials, using thicker aluminum foil can effectively reflect solar radiation heat and reduce indoor temperature.