4 weeks ago •
What is the reason for using Aluminium Foil for packaging of Food?
It is a good conductor but a very poor radiator and absorber (the two go together) - because it is shiny. The inner surface, where not actually in contact, will not absorb radiated heat well and the outer surface will not radiate heat well. Hence the food will not lose much heat. It is also cheap to produce in suitable sheet form.
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