| 摘要 |
A plastic container closure has a skirt which is connected to a tamper-evidencing band by frangible bridges, all molded in a single unit. Where the closure is a cap for a container neck, there is at least one retaining means on the skirt and another on the band. The neck has two retaining means which cooperate with those on the cap to prevent upward movement of the cap without fracture of the bridges. To reduce the likelihood of unintentional fracture of the bridges, particularly during installation of the cap on the neck, plural ejection bumpers of extended arcuate lengths are located on the top edge of the band and or from the bottom edge of the skirt and the bridges are located between the bumpers. This snap lock ring functions to replace the conventional retaining means located centrally of the band. The invention is applicable to tamper-evidencing bands of closures and of push/pull closures of sports-type cap spouts. |
