Tin Can Manufacturing

The manufacturing of tin cans for baby formula begins with a thin tin-plated steel sheet, chosen for its durability, corrosion resistance, and ability to protect contents. The process starts with metal printing, where high-precision printing machines apply food-safe inks and coatings to the tin sheet. This step includes printing labels, nutritional information, and branding directly onto the sheet in vibrant, durable designs, followed by a protective lacquer to ensure safety and compliance with food standards. The printed sheets are then cured to set the ink and coating, preparing them for further processing.

Next, the printed sheets are cut into precise rectangular blanks using automated shearing machines, sized according to the can’s dimensions. These blanks are fed into a shaping process, where they are rolled into cylindrical shapes using a forming machine. The edges of the cylinder are then welded using electric resistance welding to create a strong, leak-proof seam, ensuring the can’s structural integrity. After welding, the cans undergo flanging, where the top and bottom edges are curled outward to form rims, allowing for secure attachment of lids. Quality checks follow, with automated systems inspecting the welds and seams for defects like cracks or weak joints using techniques such as pressure testing or visual inspection. Finally, the cans are cleaned, coated internally with a food-safe lining, and packaged into stacks or pallets for shipping to filling facilities, ensuring they meet stringent safety standards for baby formula storage.