Different Types of Aluminum Sheets for Bottle Closure

In the field of packaging, the selection of aluminum for bottle cap is crucial. Different types of aluminum plates have their own unique properties and play different roles in practical applications.

DOS oil lubricated aluminum sheet

The key to DOS oiled aluminum plates is the thin DOS oil film on their surface. It has multiple missions. From a protective perspective, it can effectively isolate the air and prevent the surface of the aluminum plate from oxidation, just like putting on a layer of invisible protective clothing for the aluminum plate, which greatly extends the service life of the aluminum plate. In subsequent processing, such as winding, trimming, slitting and forming, this oil film turns into a lubricant, reducing the friction between the material and the processing equipment, making the processing smoother and reducing the risk of scratches and damage.

From a safety perspective, DOS oiled aluminum sheet is quite reliable. The amount of oil applied is strictly controlled, generally less than 10Mg/m², which fully complies with the standards of the US FDA. This means that even if it is used in the field of food and beverage packaging, there is no need to worry about contamination of the contents, and its safety has been authoritatively recognized. Moreover, since the amount of oil applied is precise and small, there is no need for subsequent baking treatment, and it will not affect other processes such as printing of the aluminum sheet. While ensuring safety, it also improves production efficiency.

Painted aluminum sheet

Color-coated aluminum sheet is a coloring treatment on the surface of aluminum sheet, which gives the aluminum sheet a colorful appearance. Its surface is extremely flat and there is no composite high-temperature indentation. After the coloring treatment, the hardness of the aluminum sheet increases, which makes it not easy to deform after shearing.

Printed aluminum sheet

A major feature of color-printed aluminum plate is its strong hardness and flexibility. The printed coating on its surface is not only rich in color and has many patterns to choose from, but also can be customized for special colors and patterns. The aluminum sheet for closure also has high requirements for color, coating performance and surface quality.

During the processing, its coating can deform with the substrate without damage, and can maintain good performance even if it is subjected to mechanical effects such as scratches, friction, collisions and extrusion.

From a safety perspective, the high-gloss coating on the surface of the color-printed aluminum plate adheres firmly, has good color stability and saturation, and the entire production process complies with relevant quality and safety standards. Under normal use, no harmful substances will be produced, and it can be safely used in various product packaging and other fields.

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