10 micron aluminum foil is an aluminum foil material with a thickness of 10 micrometers (μm), belonging to the category of ultra-thin aluminum foil, and has important applications in lithium batteries, electronic products, and high-end packaging.
Physical properties of 10 micron aluminum foil:
– Thickness:
10 micron aluminum foil is only 0.01 millimeters thick, exhibiting extremely high thinness and lightness, which helps improve battery energy density and weight reduction.
– Barrier properties:
Aluminum foil itself has good barrier properties, preventing the penetration of substances such as oxygen and water vapor. However, when the aluminum foil thickness is reduced to 10 micrometers, its barrier performance is somewhat affected. Therefore, in practical applications, surface treatment or composite materials are needed to enhance the barrier effect.
– Mechanical properties:
10 micron aluminium foil needs to have high tensile strength and good elongation to avoid brittle fracture during battery charging and discharging. Simultaneously, its thickness tolerance needs to be stable within ±0.1 micrometers to ensure battery consistency and safety.
Manufacturing process of 10 micron aluminium foil:
– Rolling process:
The production of 10-micron aluminum foil mainly adopts rolling processes, including hot rolling and cold rolling. During the rolling process, multiple rolling passes and annealing are required to refine the aluminum grains, improving the ductility and mechanical strength of the aluminum foil.
– Surface treatment:
To enhance the bonding performance between the aluminum foil and the cathode material and the battery’s conductivity, the aluminum foil surface needs to be roughened or coated. For example, carbon coating and oxidation processes can be used to enhance the surface activity of the aluminum foil.
– Clean production:
During the production of ultra-thin aluminum foil, the cleanliness of the production environment must be strictly controlled to avoid defects such as dust adhesion and roller scratches. Simultaneously, an online defect detection system is needed to monitor the quality of the aluminum foil in real time, ensuring product consistency and stability.
Characteristics of 10 micron aluminum foil:
– Lightweight and flexible:
Its 10-micron thickness makes it lightweight, flexible, and easy to fold, roll, and shape, allowing for convenient wrapping of items of various shapes.
– Strong barrier properties:
Despite its thinness, aluminum foil possesses excellent barrier properties, effectively blocking light, oxygen, moisture, and odors, extending the shelf life of packaged items.
– Excellent thermal conductivity:
Aluminum has excellent thermal conductivity. 10 micron aluminum foil can quickly and evenly conduct heat, helping food to be heated evenly during cooking and preventing localized overheating or burning.
– Hygiene and safety:
Aluminum foil itself is non-toxic and odorless, and does not easily breed bacteria, meeting food-grade safety standards. It can directly contact food, ensuring food safety.
– Recyclability:
Aluminum has high recycling value. 10-micron aluminum foil can be recycled after disposal, which helps save resources and protect the environment.
Application areas of 10 micron aluminium foil:
– Lithium batteries:
10 micron aluminum foil is mainly used as the positive electrode current collector in lithium-ion batteries, which can significantly improve the battery’s charge and discharge efficiency and energy density. With the rapid development of the new energy vehicle and energy storage markets, the demand for high-performance battery aluminum foil continues to grow.
– Electronic products:
In the field of electronic products, 10 micron aluminum foil can be used to make high-end capacitors, electromagnetic shielding materials, etc., meeting the needs of electronic products for thinner, lighter, and higher-performance designs.
– Food packaging:
This is the primary application area for 10-micron aluminum foil. It can be used for disposable food packaging and takeout food packaging, maintaining food temperature and freshness. It can also be used to cover bowls and plates to prevent food from cooling and moisture evaporation. Furthermore, it can be used in baking to cover baking trays and prevent excessive browning.
– Pharmaceutical packaging:
Due to its excellent barrier and hygienic properties, it can be used to package sensitive medical equipment and sterile items, such as hemodialysis equipment, effectively preventing the intrusion of microorganisms and moisture.
– Thermal insulation:
Aluminum foil can be used as an insulation material in construction, automotive, and other fields, utilizing its heat-reflecting properties to help regulate temperature and reduce energy consumption.
10 micron aluminum foil for food packaging generally needs to comply with relevant food safety standards, such as China’s national standards for food contact materials and the EU’s (EC) No. 1935/2004 standards. Aluminum foil used for pharmaceutical packaging must meet the specific hygiene and quality requirements of the pharmaceutical industry.
