Molded plastic closure with split skirt tamperband

Details Molded plastic closure with split skirt tamperband Molded plastic closure with split skirt tamperband

1987-10-05

1989-01-10

Marcus, Stephen

Bottles and jars

Closures

Frangible member or portion

215253, B65D 4134

Patent

active

047967706

ABSTRACT:
An injection molded plastic closure having a tamper indicating portion. The tamper indicating portion includes a tampering indicating band which is attached to the skirt for radially outward hinging by a plurality of bridges. The tamper indicating band is subject to splitting whereby it may expand outwardly and clear a container neck finish. The tamper indicating band remains attached to the closure and the splitting thereof indicates tampering. Bridges attaching the tamper indicating band to the closure skirt are of sufficient cross section to have the required structural strength to prevent separation of the tamper indicating band from the closure skirt and at the same time permit injected molten plastic to freely flow from the closure skirt into the tamper indicating band. The tamper indicating band carries a plurality of locking flaps which are attached thereto by hinges which are defined by external areas of weakness which are shaped to be defined by a mold member which does not interlock with the closure and provides for ease of stripping.

REFERENCES:
patent: 4196818 (1980-04-01), Brownbill
patent: 4206851 (1980-06-01), Ostrowsky
patent: 4305516 (1981-12-01), Perne et al.
patent: 4394918 (1983-07-01), Grussen
patent: 4458821 (1984-07-01), Ostrowsky
patent: 4458822 (1984-07-01), Ostrowsky
patent: 4511053 (1985-04-01), Brandes et al.
patent: 4526282 (1985-07-01), Dutt et al.
patent: 4546892 (1985-10-01), Couput
patent: 4653657 (1987-03-01), Paparasilopoulos

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