8021 aluminum foil is a high-strength and high-ductility aluminum alloy foil, widely used in pharmaceutical packaging, food packaging, and industrial packaging. This article will provide a detailed explanation of the production process for 8021 aluminum foil.
The production process of 8021 aluminum foil primarily involves the following steps:
1. Melting and Casting:First, aluminum ingots are melted, and then the casting process is used to form aluminum sheets. This step ensures the uniformity and purity of the aluminum material.
2. Heat Treatment:The cast aluminum sheets undergo heat treatment to improve their internal structure and mechanical properties.
3. Cold Rolling:The heat-treated aluminum sheets are then cold-rolled, gradually reducing their thickness to the required foil thickness. During the cold rolling process, the ratio of rolling oil additives is carefully controlled to enhance the strength of the oil film and ensure the surface quality of the product.
4. Aluminum Foil Rolling:On top of the cold rolling, further rolling is done to achieve the final required thickness and surface quality of the aluminum foil.
5. Offline Sheet Shape Inspection:After the aluminum foil has been rolled, offline inspection is performed to ensure the surface is free from oil stains, bright spots, black lines, pinholes, yellow spots, and other defects.
6. Slitting and Packaging:Finally, the aluminum foil is slit to ensure clean edges and then packaged for transportation and use.
These steps together ensure the high quality and excellent physical and chemical properties of 8021 aluminum foil, making it widely used in blister packaging, cold-forming packaging, food containers, battery soft packages, and more.
MC Aluminum is a professional aluminum foil manufacturer, specializing in the production of 8021 aluminum foil. The product surface is smooth and shiny, free from roll marks, oil stains, scratches, and other defects. The quality is excellent, with exports to multiple countries. Direct factory sales with short delivery times, and samples are available.
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