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Why wet environment tinplate box will rust?

tinplate boxAs a common type of packaging on the market, it has been very long, but some customers have reported that the iron box is easy to rust. I believe many people can understand this kind of situation, but the specific reasons are not very clear, Will be for everyone to share briefly.
tinplate boxManufacturerThe material is tin-plated thin steel plate. Due to the different metallicity of iron and tin, the two metals are prone to oxidation under natural conditions, resulting in corrosion and rust of the iron sheet. However, the iron box packaging, as long as you keep it well, basically do not need to worry about this problem.
Because before the iron box is formed, it will be right.tinplate boxAnti-rust treatment, one is printing with varnish, which not only beautifies the iron box, but also uses the printing ink and surface varnish to protect the iron material with double layers. The other is a plain iron box, which is directly overcoated without printing. These two methods are very good to isolate the contact between iron and moisture in the air, and slow down the oxidation rate of iron. But if there is rust, that means you
tinplate boxThe product is placed in a humid environment, in a humid environment, the air contains a large number of water molecules, iron and its oxidation to rust. Another reason is that your iron box product is damaged, scratched or rubbed, causing the surface to lose the protection of ink, and the iron material is exposed to the air, which in turn leads tinplate boxoxidation rust.

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Why wet environment tinplate box will rust?

Tinplate box as a common type of packaging on the market, the time has been very long, but there are also some customers reflect that the iron box is easy to rust.