Aluminium foil(or aluminum foil) is aluminium prepared in thin metal leaves. Approximately 75% of aluminium foil is used for packaging of foods, cosmetics, and chemical products.
When aluminium foil is used for wrapping or cooking food, most people will struggle to choose which side of aluminum foil sheet to use.
Because of the manufacturing process, most of aluminum foil roll is with one bright side and one matte side. There is only a small difference between the two, and there is not much difference in daily life.
But if you really want to get a better effect, there are two tips for you. The reflectance of the dull side is 80%
If you only store food in aluminum foil, the better way is to use the dull side to wrap food for some food may stick to the shiny side.
There is also another aluminum foil paper, of which both sides are shiny. During single sheet rolling, the upper and lower surfaces of the aluminum foil are in contact with the rolls, and both sides have a bright metallic luster. If you buy this aluminium foil wrap, you won't have choice difficulties.