| 摘要 |
PURPOSE:To prevent the inside circular end of the opening of a metal frame body with which a can container is rimmed from being corroded by rust, etc., by bonding a top-panel-sealing material. CONSTITUTION:A film is formed at least on the upper surface of the panel part 5 of a metal cover-frame body 2 by applying a coating to it. All the way round the opening 6 of the cover frame body 2 is a part 7 formed by folding back its circular end. The folded-back part 7 encloses the edge of the opening 6, by folding back the circular end along the opening 6, thereby wrapping the edge of the opening in it, and by bonding, via the formed film, the part overlapping the panel part 5, which is formed by folding it back. By means of a top- panel-sealing material 3 at least whose lower surface is covered with a synthetic resin film, the opening 6 is tightly closed so that it can be opened. |
