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to wonder why baked beans and the like come in round tins, when square ones would make much more sense.

(58 Posts)
AwesomePan Sun 05-Jun-11 13:10:42

Square ones would make all of the packaging and transporting and storing so much easier and cheaper than having round ones. There isn't any 'freshness' or refrigeration issues, just storing issues. Tea comes in square tins, often.

I know there are more urgent and pressing matters to attend to, such as BGT and events in Yemani, but does anyone know the answer to this?

bibbitybobbityhat Sun 05-Jun-11 13:11:33

Easier to open a round tin with a tin opener.

bibbitybobbityhat Sun 05-Jun-11 13:11:48

Easier to manufacture round tin.

chicletteeth Sun 05-Jun-11 13:11:51

Difficult to open a square tin with a tin opener methinks.
Not all tins have pull off tops, but everybody has a tin opener

pinkhebe Sun 05-Jun-11 13:12:02

how would you open a square tin with a tinopener? (or am I being really thick grin)

seaweedhead Sun 05-Jun-11 13:12:11

Aren't round ones easier to open though? Unless they have a ring pull of course...

CMOTdibbler Sun 05-Jun-11 13:12:52

Its much easier to make round/cylindrical tins than square ones

seaweedhead Sun 05-Jun-11 13:13:06

Ooooh! Great minds think alike eh?

HazeltheMcWitch Sun 05-Jun-11 13:14:34

...also a cylindrical tin is much stronger than a square one (with same materials) would be.

AwesomePan Sun 05-Jun-11 13:15:09

hmm..but just about all tinned fish have ring-pulls, and are square'ish. The costs saved by transporting and storing square ones would easily outstrip the cost of putting ring pulls on. Shurely.

LemonEmmaP Sun 05-Jun-11 13:16:42

You get more volume of beans in a round tin than a square one that uses same amount of tin. So it's cheaper to make round tins. I guess someone has worked out that tin saved is more than packing/storing/transporting costs.

chicletteeth Sun 05-Jun-11 13:16:57

No they don't.
None of my tuna tins do!
Cylindrical tins stronger, easier to shape during production too

Glitterknickaz Sun 05-Jun-11 13:17:00

manufacturing process is easier with cylinder and rigidity is better with a cylinder

AwesomePan Sun 05-Jun-11 13:17:00

hazel - is that to keep those feisty beans inside the tin??? grin

why is making round ones cheaper? Same process, same material, same size.

hobbgoblin Sun 05-Jun-11 13:17:07

Corners are dead space.

chicletteeth Sun 05-Jun-11 13:17:17

Snap Hazel

jenniec79 Sun 05-Jun-11 13:17:23

Round tin uses less metal for the same volume - ie cheaper material cost
Corners make stress risers so more likely to fail - not too much of a problem with tea as not preserved in the tin, but with beans etc could be dangerous not just messy (eg if botulism got in)

chicletteeth Sun 05-Jun-11 13:19:02

Why would it be the same size?
What do you mean? The same volume?

If you make a square tin, you have to be able to bend the metal into place at right angle repeatedly then join the whole thing

Cylindrical ones, you just roll

Like you said, BGT is probably more important than this grin

diddl Sun 05-Jun-11 13:19:58

Wouldn´t it be harder to get everything (liquid) out of a square tine?

Harder to scrape?

Also-the tea caddies are meant to be reusable?

AwesomePan Sun 05-Jun-11 13:20:36

ah, stress riser makes sense.

not sure about corners being dead space INSIDE the tin. Certainly outside re all of that space wasted due to he roundness.

katvond Sun 05-Jun-11 13:21:33


chicletteeth Sun 05-Jun-11 13:22:44

Well awesome my guess it Heinz and the like have probably considered this once.
Decided it wasn't going to b a money-saver and indeed would perhaps be a money-drainer and have decided proceed with cylindrical ones.

Tetrapaks however?

AwesomePan Sun 05-Jun-11 13:22:59

why would it be harder to get stuff out (liquid esp.) and why is scraping a round tine better than a square tin? Wit ha square one you get the stuff literally cornered.

chicletteeth Sun 05-Jun-11 13:23:01

decided to proceed

chicletteeth Sun 05-Jun-11 13:24:10

Can't fit a flipping spoon into the corner of a tin can you?

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