bulging

Any bulging of the ends of a can may indicate a deterioration in quality due to mechanical, chemical, or physical factors. This bulging may lead to swelling and possible explosion of the can.

…process, however, will result in bulged cans after long periods of storage. For safety reasons, the contents of these cans should not be consumed. Although in most cases bulged cans are caused by the formation of gas from chemical reactions between the metal cans and their acidic contents, there is…