Before the use of color coated sheet, the production process of spraying sheet has been used, and now the spraying production line is basically replaced by the color coated sheet production line.
Coloured Coating Board
The production process of spraying plate originally evolved from the process of spraying powder after metal forming. This process has been technically a big step ahead of forming spraying, also known as powder spraying production line. Although powder spraying production line is also a continuous production mode, because its painting process is still in the form of spray gun arrangement, there is no qualitative change compared with the forming spraying process, there are still some problems, such as low efficiency, high labor intensity, waste of paint, uneven coating film thickness and so on.
Therefore, the spraying production line has basically been replaced by the color coating production line. The color coated plate is a kind of composite material, which is made of steel plate surface by strict degreasing and chemical treatment, and then dried and solidified by roller coating or film. The traditional spraying coating is transformed into continuous coating of steel plate, which is convenient for surface treatment and coating quality control, and there are no defects such as edge dead angle and so on.
Compared with the traditional powder spraying production, the color coated sheet has the advantages of high efficiency, energy saving and environmental protection. At the same time, its comprehensive cost is cheaper than that of the spraying sheet. The color coated sheet process can reduce the cost of thin sheet coating products by 5%-10%, and save energy I/6-1/5. However, the spraying process is characterized by low efficiency, high labor intensity, large waste of coatings and uneven thickness of coatings. Therefore, the spraying production line is basically replaced by the color coating production line.