The product is made of hot zinc plate, hot aluminum zinc plate, electric zinc plate, etc. after surface pretreatment (chemical degreasing and chemical conversion treatment), one or several layers of organic coating are applied on the surface, and then
baked and solidified. Also because there are different colors of the organic coating color steel coil plate from this name, referred to as color coil.
In addition to the protection of zinc layer, the organic coating on the zinc layer can cover and protect the color coated steel strip with hot-dip galvanized steel strip as the base material to prevent the steel strip from rusting. The service life of the color coated steel strip is about 1.5 times longer than that of the galvanized steel strip.
Purpose of color paper
Color roll has light weight, beautiful appearance and good anti-corrosion performance. It can also be processed directly. The color is generally divided into gray white, sea blue and brick red. It is mainly used in advertising industry, construction industry, home appliance industry, electrical industry, furniture industry and transportation industry.
The coating usd for the color roll is selected according to the use environment, such as polyester silicon modified polyester, polyvinyl chloride plastisol, polyvinylidene chloride, etc. Users can choose according to the purpose.
Classification of color roll substrate
Hot dip galvanized base plate
The product obtained by coating the organic coating on the hot-dip galvanized steel plate is the hot-dip galvanized color coating plate. In addition to the protective effect of zinc, the organic coating on the surface of the hot-dip galvanized color coated plate also has the function of isolation protection and rust prevention. Its service life is longer than that of the hot-dip galvanized plate. The zinc content of hot-dip galvanized base plate is generally 180g / m2 (both sides), and the zinc content Z of hot-dip galvanized base plate for external use of buildings is 275g / m2.
Hot dip aluminized zinc substrate
The hot-dip aluminized zinc steel plate (55% Al Zn) is used as the new coating base plate, and the aluminum zinc content is usually 150g / ㎡ (both sides). The corrosion resistance of hot aluminum zinc plate is 2-5 times that of hot zinc plate. Continuous or intermittent use at temperatures up to 490 ° C will not cause serious oxidation or scale formation. The ability of reflecting heat and light is twice as much as that of hot-dip galvanized steel plate, and the reflectivity is more than 0.75, which is an ideal building material for energy saving.