TWO-PIECE DRAWING/IRONING CAN EXCELLENT IN CORROSION RESISTANCE AND FLAVOR LOSS RESISTANCE AND ITS MANUFACTURE

摘要

PURPOSE: To provide a can free from the peeling off of the resin at a flange part, which is excellent in corrosion resistance and flavor loss resistance. ;CONSTITUTION: In a drawing/ironing can formed by using a tin-plated steel sheet at least on side of which becoming the inside surface of the can s previously covered with thermoplastic resin, the main component of the thermoplastic resin is crystalline polyester resin, the average thickness of a resin layer in the side wall part of the can is 5 to 30μm, the average thickness of a tin film is 0.2 to 2.0g/m², and the effective covering ratio of the tin is 85% or over. A metallic surface of the whole periphery in contact with the thermoplastic resin covering at least a range within 2mm from the tip of a flange is covered by an iron-tin alloy, and the covering ratio of the iron-tin alloy is 0.7 or over. A two-piece drawing/ironing can excellent in corrosion resistance and a flavor preservability whose part of a range within 2mm from the tip of the flange of a can body is heat-treated and formed of an iron-tin alloy layer is provided as well as is manufacture method.;COPYRIGHT: (C)1996,JPO