Color coated board
Color coated sheet is also called coated sheet or color steel sheet. It is based on metal coils (cold rolled sheet, hot-dip galvanized sheet, aluminum plate It is made of various organic paints or plastic films. Because it is a coil with surface coating completed in a metallurgical factory, which can be directly processed into products by users, it is also called pre-coated coil.
Industrial plants, stadiums, airports/stations, indoor partitions, warehouses, elevators, metal curtain walls, etc.
Color coated board structure
Top coat: shields sunlight and prevents ultraviolet rays from destroying the coating; when the top coat reaches the specified thickness, it can form a dense shielding coating film, reducing water and oxygen permeability
Primer: It is helpful to strengthen the adhesion to the substrate, so that the paint is not easy to desorb after the paint film is permeated, and it will also improve the corrosion resistance, because the primer contains corrosion inhibitors, such as chromate pigments. Passivate anode and improve corrosion resistance
Coating: Generally galvanized or galvanized, this part has the greatest impact on the service life of the product, the thicker the coating, the better the corrosion resistance
Substrate: generally cold-rolled sheet, different strength determines the mechanical properties that the color-coated sheet can withstand
Back paint: The function is to prevent the steel plate from corroding from the inside, generally a two-layer structure (2/1M or 2/2, primer + back paint), if the backside needs to be bonded, a single-layer structure is recommended