Requirements for primer and topcoat for painted packaging steel strips

No matter what industry the painted packing steel belt is used in, there are strict requirements on the waterproof, moisture-proof and corrosion resistance of the steel belt. These requirements are mainly reflected in the primer of the painted packing steel belt.
　　 Painted packaging steel strips require the primer to have excellent rust resistance and adhesion, and the paint film is tough and durable. The primer should be applied to steel parts, galvanized parts and copper alloy parts according to the difference in metal potential. Apply iron red primer. Iron red alkyd primer can be used for interior parts and products that are not directly immersed in water, salt spray, wind, sun, etc. Red lead alkyd primer can be used for products with high anti-rust requirements. Paint resistant paint to the steel strip in the oil medium.
　　Packing steel belts are often corroded by sunlight, wind, rain, frost and salt spray, so the topcoat of steel belts is required to have good salt spray resistance, weather resistance, strong bonding force, and high mechanical strength, so it is used Various alkyd enamels. For products with high decorative requirements, amino or nitro hammer paint can be considered.