Where id the soft drink go? Serious question

[jfkal]

I have left lots of canned drinks (100+, Coke, Pepsi etc.), in my storage bin under the bunk. Forgot about them for a few month. After I rediscovered them I found that almost all of them where half empty, but still closed and even pressurized. Needless to say the storage bin was full of stick gung. How on earth does this happen???????
No puncture visible. Can appears in mint condition from the outside.
Anyone??

 

[fluffc]

Pinhole rust?

 

[VicS]

[ QUOTE ]
No puncture visible. Can appears in mint condition from the outside.


[/ QUOTE ] Look at is more closely there is a hole in it somewhere. I had it happen to just one can of Sprite or similar. Beer cans seem unaffected though.

You need to finish the cleaning up with a mould cleaner/preventer or you'll have a load of mould growing in there by the end of next summer.

 

[BAtoo]

Cans will have a pinhole, ruptured & leaked out & the pressure is probably from the fermenting juice inside -

 

[Slow_boat]

But how can they be half empty but still pressurised? If it was a pinhole the pressure would have gone wouldn't it?

 

[jeremyshaw]

"How can it still be pressurised?"

Because the pinhole is very slight, or just a seam fault. So it takes some pressure to open up the fault. I had a similar thing happen, though not on the scale you have. Duff local canning factory batch maybe.

 

[Danny Jo]

The original post mentioned that there were several different varieties of can, and there is no mention that only one variety was affected, so a batch fault won't explain it. To affect so many of the cans, some physical process must have been operating in the locker. Corrosion would surely have affected some cans more than others, resulting in uneven emptying. Freezing can increase the pressure to the point that the seams fail, but the can will usually distort before seam failure. Unexplained mystery.

Mark

 

[AIDY]

were they full to start with ?

When i worked for Coke i used to buy half full cans for the kids cheap. before the cans get packed they are weighed and packed seperatly if not full. may of got mixed up and you bought a duff pack.

 

[dratsea]

Aluminium cans? I lost some beer in same way and came to conclusions that the pin holes are caused by salt water reacting with the aluminium (technically with impurites in/on the aluminium). The salt water is at lowest point. Only liquid exits at lowest point so gas builds up above. Hence if you get there at the right time, ie half empty, still have some liquid in botton half and gas in top, still under pressure.