Tamper evident closure and associated method

Details Tamper evident closure and associated method Tamper evident closure and associated method

1990-05-25

1991-03-12

Pollard, Steven M.

Bottles and jars

Closures

Frangible member or portion

215230, B65D 5100

Patent

active

049989898

ABSTRACT:
A resilient closure snap fit onto a container having an end wall provided with a plurality of transverse grooves. A resin is deposited on the top surface of the end wall and into the grooves. If the closure is removed from the container, the top layer of resin and a portion of the resin in the grooves will fracture, thus indicating to the consumer that tampering with the container has occurred.
In another embodiment, the closure comprises a rotatable portion and a fixed portion. The rotatable and fixed portion have grooves which are filled with a resin. When the rotatable portion is pivoted away from the fixed portion to open the container, a portion of the resin fractures, thus indicating tampering with the container.
In another embodiment, the tamper evident closure comprises a closure body having an end wall and a skirt depending from the end wall and a closure lid movably secured to the closure body. The end wall and the closure lid define an upwardly open recess. A cured brittle layer is disposed in the upwardly open recess such that a portion of the layer contacts the end wall and another portion of the layer contacts the closure lid, whereby relative movement of the closure lid away from the end wall will cause a readily visible irreversible fracture of the layer and separation of at least one piece of the layer from the closure lid and the end wall. An associated method is also provided.

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