Care also not to overfill the cans, since this may result in the development of springers or flippers. Dangers arise from canned goods as a result of changes in the contents, defects in the canning, impurities from the can or the use of representative and coloring agents.
By pressing the ends of a can with fingers, it will detect flippers and springers and soft and hard swells. Springer - a can with one end permanently bulged. When sufficient pressure is applied to this end, it will flip in, but the other end will flip out.
Flipper is a can that normally appears flat; A slight distension of one end of the container where outside pressure will return the end to a normal position but will cause the other end to flip out. Flippers result from a lack of vacuum.
This condition is actually the beginning of a hydrogen swelling or due to an insufficient exhaustion or over-filling beyond the capacity of the can. Flippers or springers are most frequently caused by inadequacies of vacuum and headspace, and only rarely by microbial spoilage.
Defect of can: Springers and Flippers
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Metal can defect
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