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I'm not a material scientist, but the two are constructed very differently. Tetrapaks are laminated, meaning that various layers of solid materials are glued t
by jfim 4y ago
I'm not a material scientist, but the two are constructed very differently.
Tetrapaks are laminated, meaning that various layers of solid materials are glued together. Think of it as a sticker on something.
For cans, the epoxy is a liquid coating that's applied by spraying or roller coating, more like paint.
- coryrc 4y agoAnd, for the cans, it then cures in place. The BPA is like a catalyst and doesn't bind with the material, which is what allows it to leach out so well. Polyethylene, in addition to being a safer molecule, uses catalysts which don't end up in the final product, which means you can't be exposed to them.
- smohare 4y ago“Leach out so well”. Sounds like you never read the studies around how it leaches, lol.