POSCO Holdings Inc.
Ink composition for steel material, having excellent adhesion, method for manufacturing printed steel sheet by using same, and printed steel sheet manufactured thereby

Abstract:

An ink composition for a printed steel sheet, having excellent adhesion to a steel sheet, processability, solvent resistance, and the like, a method for manufacturing a printed steel sheet using the same, and a printed steel sheet manufactured thereby, are provided. The ink composition for a steel material includes 10 to 30 parts by weight of a mixture of a urethane acrylate oligomer and another type of acrylate oligomer different from the urethane acrylate oligomer, 65 to 80 parts by weight of a radiation curable monomer which is a mixture of a monofunctional radiation curable monomer and a di- or more functional radiation curable monomer, 1 to 10 parts by weight of a photoinitiator, and 0.01 to 10 parts by weight of an adhesion promoter.