The purpose of the square metal tins surface be coated with glossy oil is two folds:
Firstly, is to protect the square metal tins, the surface is oiled, which can well isolate the water molecules in the air from directly contacting the stainless steel tin material, which has the function of preventing the small round tins from oxidizing and rusting. It can prevent the printing on the surface of the small round tins from scratching and oil dropping.
Secondly, in order to achieve the ideal process effect on square metal tins, different designs need different processes to reflect. Different inks such as dumb oil, gold oil, rubber oil, and explosive oil. , The effects reflected are also different, targeted oil can maximize the design effect of the stainless steel tin box