Two-piece cans have the following advantages over three-piece cans made by can making machine: 　

①Good sealing. The tank body is directly formed by the drawing process, without leakage, and the leak detection process can be eliminated. 　
③ Beautiful and elegant. The tank body has no seams, beautiful appearance, and the tank body can be decorated and printed continuously with good effect. 　
④High production efficiency. The two-piece can has only two parts, and the can body manufacturing process is simple, which is of great benefit in simplifying the process and improving the production capacity. 　
⑤ Save raw materials. The body of the two-piece can is stretched and deformed, and the wall thickness is thinner than that of the three-piece can. In addition, the body of the two-piece can is integrally formed without the longitudinal seam of the can and the seam with the bottom of the can, which also saves material . 　However, two-piece cans have higher requirements on material performance, can-making technology, can-making equipment, etc., and there are fewer types of filling materials.