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Aluminum cans have a plastic liner (short science video)

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https://sigforum.com/eve/forums/a/tpc/f/320601935/m/6800063694

November 18, 2022, 09:49 AM
Modern Day Savage
Aluminum cans have a plastic liner (short science video)
I did know that aluminum cans had a plastic liner, but I've always enjoyed teachers who can bring their subject to life and inspire their students to be interested in whatever subject they taught...and this teacher did that for me with this video.



https://youtube.com/shorts/xIVONw9Pr4w?feature=share
November 18, 2022, 10:25 AM
M-11
Big Grin



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November 18, 2022, 10:28 AM
Balzé Halzé
So what is the practical purpose of the plastic liner?


~Alan

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November 18, 2022, 10:36 AM
bdylan
quote:
Originally posted by Balzé Halzé:
So what is the practical purpose of the plastic liner?


It keeps the acid in the beverage from damaging the can and degrading the taste.
November 18, 2022, 10:44 AM
P220 Smudge
quote:
Originally posted by Balzé Halzé:
So what is the practical purpose of the plastic liner?


It's so you get that great plastic flavor we all know and love.


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November 18, 2022, 10:45 AM
nhracecraft
Though I'm not a beverage scientist, to expand, the plastic liner probably reduces the negative affects on having the AL in contact with the beverage, which could affect the flavor, or even result in leeching of the AL into the solution over time. Also, as many beverages are somewhat acidic (Coke is known to remove paint! Eek ), it would surely eat through the AL can at some point. It's probably better for long term storage, as the plastic would likely provide a better air tight/vacuum seal than raw AL as well.


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November 18, 2022, 10:59 AM
Balzé Halzé
All that makes sense.


~Alan

Acta Non Verba
NRA Life Member (Patron)
God, Family, Guns, Country

Men will fight and die to protect women... because women protect everything else. ~Andrew Klavan

"Once there was only dark. If you ask me, light is winning." ~Rust Cohle
November 18, 2022, 01:04 PM
gpbst3
quote:
Originally posted by bdylan:
quote:
Originally posted by Balzé Halzé:
So what is the practical purpose of the plastic liner?


It keeps the acid in the beverage from damaging the can and degrading the taste.


Someone on the Youtube comments said they had a pop (soda, for everyone else) can from another country and could taste the metal to the point it was undrinkable.


November 18, 2022, 01:33 PM
Gustofer
quote:
Originally posted by nhracecraft:
Though I'm not a beverage scientist, to expand, the plastic liner probably reduces the negative affects on having the AL in contact with the beverage, which could affect the flavor, or even result in leeching of the AL into the solution over time. Also, as many beverages are somewhat acidic (Coke is known to remove paint! Eek ), it would surely eat through the AL can at some point. It's probably better for long term storage, as the plastic would likely provide a better air tight/vacuum seal than raw AL as well.

It's not just aluminum, most canned goods are in cans that have plastic coating. Veggies, tomato sauces, etc....

I wasn't really aware of this until I started paying more attention to endocrine disrupting chemicals in the things we put in and on our bodies. Most of the plastics in these cans are not harmless and contain bisphenol A (BPA).

What is BPA, and what are the concerns about BPA?

Some companies will label their cans as being BPA free.


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"Great danger lies in the notion that we can reason with evil." Doug Patton.