Patent ID: 7749582

Claim:
A surface-treated seamless steel can comprising a surface-treated steel sheet, having: an inorganic surface-treating layer on the surface of the steel sheet; and a thermoplastic polyester resin coating formed on at least one surface of said inorganic surface-treating layer; wherein said inorganic surface-treating layer comprises Zr, O, F and H, contains P and Zr in the uppermost surface of the inorganic surface-treating layer at an atomic ratio of 0≦P/Zr<0.1, contains O and Zr in the uppermost surface of the inorganic surface-treating layer at an atomic ratio of 1<O/Zr<5, contains F and Zr in the uppermost surface of the inorganic surface-treating layer at an atomic ratio of 0.5<F/Zr<2.0, and the coating weight of Zr of the inorganic surface-treating layer being 5 to 100 mg/m 2 .