What is the weakness of the side seam three-piece cans?

The weakness of the side seam three-piece cans is that the material deteriorates when it is molded, heated, and cooled. At the same time, the solder, flux, and oxides are easily affected by the contents. In the case of soldering, the printed surface is prevented from being burned by the heat generated during the soldering process, and the soldered area (called the side seam area) cannot be printed. Similarly, the three-piece cans also have welded cans. The side seams are slightly overlapped and high-frequency welding is used. The side seams are smaller, about 3 mm. Two-piece cans and monolithic cans are cylindrically shaped in their method of manufacture and then printed. The entire can can be printed. Due to the different types of cans, the area of ​​use of the cylinder surface is also different.