SIDE SEAM-COATED TIN-FREE STEEL WELDED CAN

摘要

In a side seam coated tinplate welded can, the inner and outer surface portions (2) of the side seam (3) have an outermost layer of oxide 50-400 Angstroms thick and an intermediate layer of Fe-Sn alloy of thickness 5-100% of the total Sn layer. A resin is coated on the inner or outer surfaces of the side seam, and contains a carbonyl, hydroxyl, ether, or epoxy polar at a concentration of 10-2000 millimoles/100g. The anti-corrosive action of the coated seam is maintained after flanging or double seaming.