We all know canned food - canned soup, canned fruits etc.
There's a type of can that's very easy to open, just pull the ring to open the can. There's another type, without the opening ring, that requires struggling with a can opener.
Question is, since easy opening ring has been invented and in use for so long, why are some canned food producers still insisting on plain cans?
Bigger question is, from big producers like Campbell, some cans have opening rings and some cans don't. Quite a mystery to me.
There's a type of can that's very easy to open, just pull the ring to open the can. There's another type, without the opening ring, that requires struggling with a can opener.
Question is, since easy opening ring has been invented and in use for so long, why are some canned food producers still insisting on plain cans?
Bigger question is, from big producers like Campbell, some cans have opening rings and some cans don't. Quite a mystery to me.