Oil stains on the surface of aluminum foil

The oil stain on the surface of aluminum foil refers to the excess oil on the surface of aluminum foil after rolling, that is, the oil other than the rolling oil film. The amount of oil stain is a very important indicator for evaluating the quality of aluminum foil. These oils can be thrown, splashed, and dripped onto the surface of aluminum foil from the roll neck or the top or bottom of the rolling mill outlet. They are often dirty and have complex components.

The surface of aluminum foil is oily, which is more harmful than other rolled aluminum strips and aluminum plates.

1. Because most of the finished aluminum foil products are used as decoration or packaging materials, they must have a clean surface.

2. The aluminum foil is thin and is prone to bubble formation during the subsequent annealing. In addition, due to the large amount of oil, excessive residue is formed there, affecting its use.