Abstract: An aerosol can body includes a lower opening Ob formed on one end of the seamless cylindrical trunk portion. A domed shoulder portion is formed on the other end of the trunk portion continuously from the trunk portion. An opening curled portion that is diametrically smaller than the lower opening Ob is formed on a center of a leading end of the shoulder portion. The surface pattern is formed on the trunk portion between an upper end of the shoulder portion side and a lower end of the lower opening Ob side. An upper region A that has a predetermined width including an upper end portion of the surface pattern in an axial direction of the trunk portion is formed above the trunk portion. Vickers hardness of at least the upper region a of the trunk portion is greater than 200 Hv but less than 250 Hv.

Abstract: A method of manufacturing a two-piece food can having improved corrosion resistance is provided, wherein the two-piece food can using a metal sheet coated with a thermoplastic resin and having annular uneven beads and/or a bottom rim. After forming a bottomed cylindrical can body by drawing and ironing, by heating at a temperature higher than the melting temperature of the thermoplastic resin for a predetermined time before forming uneven beads and/or a bottom rim to the can body and quenching within a predetermined time after heating, the inner resin coating hardly peel off during the following formation of uneven beads and/or the bottom rim. As a result, a two-piece food can having excellent corrosion resistance may be obtained.

Abstract: A method of manufacturing a two-piece food can having improved corrosion resistance is provided, wherein the two-piece food can using a metal sheet coated with a thermoplastic resin and having annular uneven beads and/or a bottom rim. After forming a bottomed cylindrical can body by drawing and ironing, by heating at a temperature higher than the melting temperature of the thermoplastic resin for a predetermined time before forming uneven beads and/or a bottom rim to the can body and quenching within a predetermined time after heating, the inner resin coating hardly peel off during the following formation of uneven beads and/or the bottom rim. As a result, a two-piece food can having excellent corrosion resistance may be obtained.