| 摘要 |
A blown plastic container includes a hollow plastic body, an integral blow molded shoulder and an integral blow molded finish with a radially outwardly ext ending blow molded retention means such as a thread or bead on the finish. In one form, the reinforcing means comprises blow molded axial columns extending radially outward ly. In another form, the reinforcing means comprises geometric depressions. Preferab ly, the reinforcing means are disposed circumferentially at equal spacing. When the extr usion blow molded container is trimmed, the finish may have an annular frustoconical r adial ledge spaced from the open end of the finish. The reinforcing means may extend b etween the ledge and the lowest mold threads or beads, between the threads or beads, or for the full height of the finish above the ledge. |
