Aluminum coil is commonly used for making the body part of a can. The aluminum coil is typically made from 3004 or 3104 alloy, which is a type of aluminum alloy that contains manganese as its primary alloying element.
The aluminum coil is first cleaned and coated with a thin layer of lubricant to prevent scratching or damage during the stamping process. The coil is then fed through a stamping machine that cuts it into flat sheets and shapes them into cups.
The cups are then washed and treated with a chemical solution to remove any remaining oils or lubricants. The cups are also etched to create a rough surface that helps the paint adhere to the aluminum.
The cups are then coated with a layer of paint and cured in an oven to harden the paint. The painted cups are then formed into cans using a series of processes, including trimming, seaming, and necking.
Aluminum is a popular choice for making cans because it is lightweight, strong, and resistant to corrosion. It also can be easily recycled, making it an environmentally friendly option.
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