发明名称 Tamper indicating package and molded plastic closure therefor
摘要 A package including a container with a threaded finish and a molded plastic closure that is sealingly applied to the finish. The closure has a skirt portion, and the skirt portion has one or more apertures in it, at a location or locations near the top of the closure. Adjacent each aperture in the skirt portion of the closure the closure has a flexible tab which is frangibly attached to the skirt portion and which extends inwardly and upwardly from the skirt portion to engage a radially projecting bead on the finish of the container, at a location above the thread on the finish of the container. Upon the first removal or attempted removal of the closure from the container, each flexible tab is broken away from the skirt portion of the closure by the flexible tab with the radially projecting bead on the closure finish, and this damage to the closure is visible through the aperture that the flexible tab is near to provide a visual indication of the possible tampering with the package or its contents. Further, when the package is used to contain a carbonated beverage or other pressurized product, each aperture in the skirt portion of the closure aids in the venting of the headspace of the container, to thereby inhibit the misseling of the closure during its removal.
申请公布号 US4726482(A) 申请公布日期 1988.02.23
申请号 US19870030531 申请日期 1987.03.27
申请人 OWENS-ILLINOIS CLOSURE INC. 发明人 BARRIAC, JACQUES J.
分类号 B65D41/34;(IPC1-7):B65D41/34 主分类号 B65D41/34
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