When aluminum foil is rolled

Aluminum foil coiling defects mainly refer to loose coiling or loose inside and tight outside.

Since the tension that aluminum foil can withstand is limited, it is difficult to curl it hard. It is ideal to have a roll that is tight inside and loose outside.

Sufficient tension is the condition for forming a certain tension gradient, so the coiling quality ultimately depends on the quality of the plate shape.

Rolls that are loose inside and tight outside will form horizontal edges, while loose rolls will form ovals, both of which will affect subsequent processing.