05-13-2018, 11:57 PM
Sarcany wrote:
[quote=Dennis S]
It is so much better when two cans fit when you stack them. Some identical cans don't do it and some different types of cans do fit. It seems like they would require all cans of the same size to fit together.
The stackability of cans is a feature for the convenience of customers and store personnel. It offers no advantage to the manufacturer.
If you look at the way that food-cans are stacked for shipment, you'll see that they aren't stacked one-on-top-of-another.
Instead, there's a thin cardboard sheet placed between them. They don't need to nestle up for transport and transport is the big expense/worry that they're designed to accommodate.
"Tin" or steel cans used for food are rolled and soldered. The last major update to the tech was in the 1960s and that includes those pop-top cans. The equipment lasts for ages and excepting aluminum drink cans there's no competition in the industry. No motivation to improve except in the tiniest increments as machines wear out.
Yup, thin sheet of cardboard with a bottom pallet and a top flat board all bound with metal strapping. I've hauled them and at that time they were about six feet high. Probably now they are stacked higher.