Bottles and jars – Closures – Frangible member or portion
Patent
1998-07-02
2000-04-25
Vidovich, Gregory M.
Bottles and jars
Closures
Frangible member or portion
B65D 3900
Patent
active
060533447
ABSTRACT:
A tamper-indicating closure of integrally molded plastic construction that includes a base wall having a peripheral skirt with internal threads for engaging external threads on the finish of a container. A tamper-indicating band is connected to the lower or free edge of the skirt by a plurality of circumferentially spaced integral bridges. At least one of the bridges has a greater circumferential dimension than other of the bridges. A thin integral membrane is disposed in the band immediately circumferentially adjacent to the one bridge, and extends both axially and circumferentially of the band. A stop flange is positioned on the band for engaging a bead on a container to inhibit removal of the closure, such that the membrane and the other bridges rupture upon removal of the closure but the band remains connected to the closure by the one bridge of enlarged circumferential dimension. Provision of the thin membrane during the closure molding operation thus provides for rupture of the free end of the band to form a pigtail band configuration upon removal from the container without axial scoring or other secondary manufacturing operations that would require controlled orientation of the closure.
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Gregory James L.
Kurtz Stephanie L.
Eichwald Rodrigo L
Owens-Illinois Closure Inc.
Vidovich Gregory M.
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