THREE-PIECE RESEALABLE CAN

摘要

A three-piece resealable can for acidic liquid includes, a cylindrical can body member that includes a screw portion at one end; and a can bottom member that contacts the can body member so as to close an opening portion of the other end of the can body member. The can body member includes a cylindrical first steel sheet, Ni plating that is formed on an inner circumferential surface of the first steel sheet, a polyester film that is formed so as to be disposed on the outermost surface of the inner circumference of the can body member, and a Zr-containing film that is formed between the first steel sheet and the polyester film. The can bottom member includes a second steel sheet, and Sn plating that is formed on the can body member side of the can bottom member. The Zr-containing film contains Zr compounds.

主权项

1. A three-piece resealable can for acidic liquid, the can comprising:
a cylindrical can body member that includes a screw portion at one end; and a can bottom member that contacts with the can body member so as to close an opening portion of other end of the can body member, wherein the can body member includes a cylindrical first steel sheet, a Ni plating that is formed on an inner circumferential surface of the first steel sheet, a polyester film that is formed so as to be disposed on an outermost surface of an inner circumference of the can body member, and a Zr-containing film that is formed between the first steel sheet and the polyester film, wherein an amount of the Ni plating is 10 to 1000 mg/m2, the Zr-containing film contains Zr compounds, and an amount of the Zr-containing film is 2 to 40 mg/m2 expressed in terms of Zr metal, wherein the can bottom member includes a second steel sheet, and an Sn plating that is formed on the can body member side of the can bottom member, the Sn plating being on or above the second steel sheet, and wherein the Sn plating includes an Sn single metal plating in an amount of 2 to 15 g/m2.