| 摘要 |
A method for forming an irregularity in the peripheral portion of a metal closure (42) for a beaded container comprises the step of forming the metal closure (42) in a series of progressive die stamping operations, the metal closure (42) retaining its integrity with the original metal strip (46) through a series of ties (48). In a last stamping operation forming the skirt portion (62) of the metal closure (42), a pilot tool (58) is advanced bearing in its outer surface a configuration opposite to the configuration sought to be disposed in the skirt portion (62) of the metal closure (42). |
