Aluminum foil paper is generally called aluminum foil, and some people are accustomed to calling it aluminium tin foil (tin foil), but it is clear that aluminum and tin are two different metals. Why do they have this name? The reason may be traced back to the end of the 19th century. At that time, there was indeed an industrial product such as tin foil, which was used to pack cigarettes or candy and other products. Later, in the early 20th century, aluminum foil began to appear, but because the ductility of tin foil was worse than that of aluminum foil. In addition, when food comes into contact with tin foil, it is easy to have the metal smell of tin, so it was gradually replaced by cheaper and durable aluminum foil. In fact, in recent decades, all people have used aluminum foil. Even so, many people still refer to aluminum foil as tin foil or tin foil.
Why does aluminum foil have a matte side on one side and a shiny side on the other side? In the manufacturing process of aluminium tin foil , the large aluminum blocks that have been smelted will be repeatedly rolled and have different thicknesses according to the needs of different products, until a film of only about
Aluminium tin foil 0.006mm to 0.2 mm is made, but in order to be able to be further manufactured To produce a thinner aluminum foil, the two layers of aluminum foil will be overlapped and thickened technically, and then rolled together, so that after separating them, two thinner aluminum foil papers can be obtained. This approach can avoid aluminum. During the manufacturing process, tearing or curling occurs due to being stretched and rolled too thin. After this treatment, the side that touches the roller will produce a shiny surface, and the side of the two layers of aluminum foil that touches and rubs against each other will form a matte surface.
