As a commonly used packaging material for processed foods, coated tin containers have the advantages of being easy to carry, beautiful in appearance, and recyclable. They are widely used in food packaging such as cans, beverage tin, and dry steel food can.
Effect of coated tin containers
(1) coated steel food can prevents foods rich in protein from reacting with hydrogen sulfide released during sterilization and metal to produce sulfur corrosion;
(2) coated tin containers prevent pigmented fruits from tinting and discoloring;
(3) coated beverage tin prevents certain acidic foods from being corroded possible hydrogen swelling and metallic smell of food;
(4) coated steel food cans can keep the shape intact when the minced meat food is poured out.
However, coated tin containers must avoid damage to the coating film during canning and storage. Otherwise, the local exposure of the tin layer at the damaged area will not only provide sufficient cathodic protection for the tinplate, but will only be in a small area. Occurrence of concentrated corrosion within the formed electricity.