Why aluminum foil can be used in food packaging?
3.The food is more likely to deteriorate the light irradiation, reflective foil wrapped more favorable light, improve product shelf life.
2.Aluminum foil barrier is very good, after the metal aluminum is oxidized by oxygen in the metal surface to form a dense layer of oxide Al2O3 protective film to prevent oxygen to oxidation of aluminum metal, of course, made with aluminum foil bags to use this layer a dense protective film can be well isolated from the outside air into the interior of the bag, serve to prevent oxidative deterioration of food is a role.
1.Aluminum having a good ductility, can be made into a sheet, and has good printability. It also has shape retention and rigidity characteristics.
