aluminium foil for bbq and aluminium foil for shisha
|application||widely used in household commodity packaging|
|surface||one side bright,one side matt|
|packaging||free fumigted wooden box|
1,Why are the two sides of tin foil different?
In Bayer process, pure aluminum melt is extracted from alumina and placed in a furnace. (usually the furnace contains trace amounts of other elements, which results in the final product having an aluminum content between 99.8% and 99.9%). It is then poured into the "ingot" slab for cooling. After annealing, roll back and forth with heavy roller until the thickness is less than 0.02mm.
Generally speaking, tin foil is not made in a single sheet. Therefore, during the production process, the cylindrical rolling press is used to roll two steel surfaces into thin sheets. The contact surface between the two sheets will produce friction, resulting in texture, i.e. the matte surface. As for the smooth surface, the surface is smooth because the sheet is in direct contact with the steel surface of the highly polished roller.
2,How to use the glossy surface of tin foil correctly?
According to statistics, the reflectance of the matte surface of tin foil is 80%, while that of the bright surface is 88%. In other words, the gap between the two is 8%.
The reflectance of the two sides is different, because the dumb surface reflects less light, so it can absorb more heat, so the dummy face is inward.
aluminium foil in roll type used in kitchen
How should aluminum foil be stored?
Aluminum foil products are not allowed to be stored in the open air and should be stored in the warehouse. The ground in the warehouse should be flat, clean, dry and well ventilated. The room temperature should be 16-35 ℃, and the relative humidity should be below 70%. Aluminum foil products should not be stored together with acid-base and other active chemical products and articles with high humidity.
When the aluminum foil is transported from the low temperature area to the area with high temperature and high humidity, it is not necessary to open the package or store in the warehouse. It is better to store the aluminum foil in a dry place for a certain period of time, and then store or open the package after the aluminum foil temperature rises.