1. tinplate products frequent contact with water or long-term exposure to humid air.
2. The outer protective layer of lacquered tinplate is damaged or scratched.
3. zinc-plated tinplate contacts with corrosive objects.
Various lacquered tinplate boxes and cans made of zinc-plated tinplate materials are prone to rust due to improper use, storage or other reasons, which affects the appearance and overall performance. But tin cans made of lacquered tinplate are a special case. Some tinplate boxes will be tinned and coated with anti-rust varnish before printing. Coupled with the protection of the ink, the tinplate has been separated from the air.
No rust will appear under normal use