Sealing advantages of tinplate easy open ends

Why does the tinplate easy open end sealing better than other material's ends ?

A reasonable tank mouth design has a certain flat sealing area, the thickness of the tank mouth has straight and uniform, and the curling is in place and smooth. Such a can mouth has a certain pressure resistance when it is sealed, and at the same time, the effective contact area with the sealing rubber ring in the lid is enlarged. Through crimp sealing or claw sealing, after high-temperature sterilization, when the easy-open end is subjected to high pressure, high temperature thermal expansion and later cooling, during the process of lid cold shrinkage, due to the strong pressure resistance of the can mouth and the large sealing area, the degree of change of the sealing lid will be large. Small and will not loosen, so there will be no slow leaking of the tank mouth