Apparatus for forming bridges in tamper indicating closures

Details Apparatus for forming bridges in tamper indicating closures Apparatus for forming bridges in tamper indicating closures

1994-12-30

1996-10-15

Rada, Rinaldi I.

Turning

Severing or cut-off

82101, 83882, 83883, 83946, 413 10, 413 67, B26F 118, B65D 4134

Patent

active

055643191

ABSTRACT:
A tamper indicating closure comprising a base wall and a peripheral skirt having an internal thread adapted to engage the threads of a container wherein a tamper indicating band is provided on the skirt by a plurality of circumferentially spaced bridges. The band includes portions adapted to engage an annular bead on the container. The bridges are formed by using a primary knife having an interrupted cutting edge to produce a circumferential score in the side wall of the closure leaving spaced connectors or bridges followed by using a secondary knife having a continuous cutting edge to provide a continuous external score line and an accurately dimensional radial thickness of the bridges. In a preferred method and apparatus, the closures engage the successive primary and secondary knives and are moved such that the closures roll relative to the knives.

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