The paint surface of color-coated aluminum coils is usually divided into two types: single-sided painting and double-sided painting. Single-sided painting refers to coating only one side of the aluminum coil with organic paint, while the other side maintains the original aluminum color or is coated with anti-rust paint. Double-sided painting refers to coating both sides of the aluminum coil with organic paint to form different or the same colors and patterns.
How to paint color-coated aluminum coils
Different paint types correspond to different paint layers. Single side painted
Generally speaking, single-sided painted aluminum coils consist of three layers: primer layer, topcoat layer and protective film layer. The primer layer is a layer of basic paint applied on the surface of the aluminum coil after pretreatment to enhance adhesion and corrosion resistance. It is usually 5-10 microns thick.