Method and apparatus for forming tamper-evident containers
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United States of America Patent
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May 10, 1988
Grant Date -
N/A
app pub date -
Aug 12, 1987
filing date -
Aug 12, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for forming tamper-evident, sealed containers are disclosed. A plurality of filled containers are respectively fitted with generally annular, heat-shrinkable seal members, with the seal members heated by passage through a heat tunnel so that they shrink into conformance with the respective containers. In order to further conform the heat-shrinkable members to the containers, the containers are passed beneath a rotatably driven, resiliently deformable foam roller assembly, which engages each seal member, and urges it downwardly into further conformance with its respective container. In the preferred form, the roller assembly is driven so that its peripheral speed is less than the speed at which the sealed containers are moved therebeneath.
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