What is stretching cans Jar jar? Here the professional production of beverage closure, the lid of iron and aluminum companies - Dongguan Real Connaught Packing Co. to serve you a brief introduction about it. Hoping to help you.

Under normal circumstances, when canned bottom is flat-shaped or concave shape, appear convex phenomenon known as expansion tank. The jump cover as glass jars, canned soft appear swollen bag. According to the degree of convex bottom cans can be divided into the hidden inflation, inflation and hard light swelling three cases.

1. Implicit inflation: Canned appearance of normal, if using Yingbang knock bottom end, the other end will be convex bottom, such as force pushing the male end into the tank, canned again restitution.

2. Light Expansion: Canned bottom or lid was convex shape, if the pressure to force the tangs back, and then the other end will be convex, it's a little more serious degree of expansion tank.

3. Hard Expansion: Canned solid convex bottom or permanently, the further development of the cans burst occurs.