What is the material used to coat (some might use the term 'lacquer') disposable aluminum containers in the food industry? And can it be removed in a safe way (for the environment) with 'home methods'?
I am not talking of the thin oxide layer that covers aluminum foil and most basic (shiny) containers; this layer can be tunneled through and a resistance measurement with an ordinary multimeter will show high conductivity even without scratching it.
I am in particular interested in thin, easily crushable containers like dessert cups (for example mildly acidic fruit mousse).
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Source: Aliberico (see below)
The coating appears different from that used in aluminum cans, but maybe it is just a different thickness.
There is no conductivity no matter how much I scratch the surface, and only when I punch through the material with the probes I get aluminum conductivity.
The label just say Alu 41 and my google-fu has been found lacking when it comes to the coating.
I googlefound the websites of two manufacturers that produce the containers like the ones I am interested in, like Aliberico, but I cannot find the name of the coating material, just a tradename (Alucoat) and some vague marketing descriptions.
This is the 'datasheet' I have found for Alucoat: https://www.paroc.com/-/media/uploaded-product-docs/2023/01/16/15/15/alucoat-en-us.ashx?dmc=1&ts=20230409t1527075538 and there is no mention of the material.
So, let's focus the question to this particular instance: what is the coating of Alucoat made of? Can it be chemically removed, for example to create small pads?