Sand blasting of PP cans
Pre-treatment process of PP sandblasting process: The sandblasting process pre-treatment stage refers to the treatment of the workpiece surface before the workpiece is sprayed or sprayed with a protective layer. The quality of the sandblasting process before treatment affects the adhesion, appearance, moisture resistance and corrosion resistance of the coating. The pre-treatment work is not good, and the corrosion will continue to spread under the coating, causing the coating to fall off. After careful cleaning of the surface and the general simple cleaning of the workpiece, compared with the exposure coating, the life can be 4-5 times the difference. There are many methods for surface cleaning, but the most commonly accepted methods are: solvent cleaning, pickling, hand tools, and power tools.