METHOD FOR MANUFACTURING ENVIRONMENTALLY FRIENDLY Cr-FREE ANTI-FINGER PRINTING STRIP

摘要

PURPOSE: A method for manufacturing environmentally friendly Cr-free anti-finger printing strip is provided to manufacture Cr-free anti-finger printing strip having superior workability and corrosion resistance by controlling Si particle size and Si content in anti-finger printing resin solution without separate Cr-free treatment. CONSTITUTION: The method for manufacturing environmentally friendly Cr-free anti-finger printing strip comprises the step of performing phosphate treatment on the zinc plated steel sheet after plating zinc on a steel sheet to be plated with zinc; and coating an anti-finger printing solution on the phosphate treated plated steel sheet by dipping the phosphate treated plated steel sheet into a Cr-free ethylene-acrylic acid resin solution in which size of Si particles is controlled to 5 nm or less, Si content is controlled to the range of 13 to 20%, wherein the phosphate treatment step is performed so that 0.1 to 2.5 g/m¬2 of phosphate is adhered to the surface of the zinc plated steel sheet, and wherein Si particles are formed on the plated steel sheet in a lamella structure in the anti-finger printing solution coating step performed by dipping the phosphate treated plated steel sheet into the Cr-free ethylene-acrylic acid resin solution.