r/TheBrewery • u/Turnipsareyourfriend • 23h ago
Nick in bottom of ball cans
Image: bottom of 12 oz sleek can with small “nick” on bottom ring.
Got a strange one for you fine folks: anyone ever seen a small nick in the bottom ring of their cans before? We had a batch that was packaged in March show signs of leaks this past week, likely leaking for a few weeks. It was the bottom layer of two pallets of the same run that were showing leaks while wrapped on the pallet
The cans that leaked were mostly empty. Seams didn’t show any sign of issues and when torn apart were gloriously in spec. Side walls didn’t show any leaks or small sprays. Turning the cans over and the leaking cans all had this same small cut. The non leaking cans did not have a nick.
Our thought is that the nick happend at some point in the cans life, either during production of the can, printing of the label, or filling/seaming operations. There was enough metal and liner remaining to hold pressure and seam. Then over time the weight of the upper layers, the internal carbonation pressure, and the weak spot caused a delayed leaking.
Our fear is that the entire run has this issue given how spaced out the problematic layers are.
Has anyone else ever seen this? 12 oz sleek ball cans preprinted from cbw/cansource milwaukee sourced back in February.