The purpose of surface treatment is to meet the corrosion resistance, wear resistance, decoration or other special functional requirements of the product. So what is the difference between co-extrusion, spraying and lamination of metal sheet surface treatment methods? Spraying and co-extrusion are the main surface treatment methods, while the share of lamination treatment methods is relatively low.
Co-extrusion treatment: Co-extrusion is the main surface treatment method in the Chinese profile market. The co-extrusion process is cheap in surface treatment, but has a single color and poor weather resistance.
Spraying treatment: There are many varieties of spraying colors, but the fastness of the surface of the sprayed layer and the profile is poor, and it is prone to color difference, and the scratch resistance and weather resistance are not good. These factors lead to the use of sprayed sheets in the market.
Lamination treatment: As the main surface treatment method for European profiles, the quality standards for lamination materials are strict. Due to the variety of laminations, realistic patterns and environmental protection, lamination methods have been widely used in China in recent years for surface decoration of metal sheets.
